kernel/drivers/net/ethernet/rocker/rocker.c

   1 /*
   2  * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver
   3  * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
   4  * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/module.h>
  14 #include <linux/pci.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/sched.h>
  17 #include <linux/wait.h>
  18 #include <linux/spinlock.h>
  19 #include <linux/hashtable.h>
  20 #include <linux/crc32.h>
  21 #include <linux/sort.h>
  22 #include <linux/random.h>
  23 #include <linux/netdevice.h>
  24 #include <linux/inetdevice.h>
  25 #include <linux/skbuff.h>
  26 #include <linux/socket.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/ethtool.h>
  29 #include <linux/if_ether.h>
  30 #include <linux/if_vlan.h>
  31 #include <linux/if_bridge.h>
  32 #include <linux/bitops.h>
  33 #include <linux/ctype.h>
  34 #include <net/switchdev.h>
  35 #include <net/rtnetlink.h>
  36 #include <net/ip_fib.h>
  37 #include <net/netevent.h>
  38 #include <net/arp.h>
  39 #include <linux/io-64-nonatomic-lo-hi.h>
  40 #include <generated/utsrelease.h>
  41
  42 #include "rocker.h"
  43
  44 static const char rocker_driver_name[] = "rocker";
  45
  46 static const struct pci_device_id rocker_pci_id_table[] = {
  47         {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0},
  48         {0, }
  49 };
  50
  51 struct rocker_flow_tbl_key {
  52         u32 priority;
  53         enum rocker_of_dpa_table_id tbl_id;
  54         union {
  55                 struct {
  56                         u32 in_pport;
  57                         u32 in_pport_mask;
  58                         enum rocker_of_dpa_table_id goto_tbl;
  59                 } ig_port;
  60                 struct {
  61                         u32 in_pport;
  62                         __be16 vlan_id;
  63                         __be16 vlan_id_mask;
  64                         enum rocker_of_dpa_table_id goto_tbl;
  65                         bool untagged;
  66                         __be16 new_vlan_id;
  67                 } vlan;
  68                 struct {
  69                         u32 in_pport;
  70                         u32 in_pport_mask;
  71                         __be16 eth_type;
  72                         u8 eth_dst[ETH_ALEN];
  73                         u8 eth_dst_mask[ETH_ALEN];
  74                         __be16 vlan_id;
  75                         __be16 vlan_id_mask;
  76                         enum rocker_of_dpa_table_id goto_tbl;
  77                         bool copy_to_cpu;
  78                 } term_mac;
  79                 struct {
  80                         __be16 eth_type;
  81                         __be32 dst4;
  82                         __be32 dst4_mask;
  83                         enum rocker_of_dpa_table_id goto_tbl;
  84                         u32 group_id;
  85                 } ucast_routing;
  86                 struct {
  87                         u8 eth_dst[ETH_ALEN];
  88                         u8 eth_dst_mask[ETH_ALEN];
  89                         int has_eth_dst;
  90                         int has_eth_dst_mask;
  91                         __be16 vlan_id;
  92                         u32 tunnel_id;
  93                         enum rocker_of_dpa_table_id goto_tbl;
  94                         u32 group_id;
  95                         bool copy_to_cpu;
  96                 } bridge;
  97                 struct {
  98                         u32 in_pport;
  99                         u32 in_pport_mask;
 100                         u8 eth_src[ETH_ALEN];
 101                         u8 eth_src_mask[ETH_ALEN];
 102                         u8 eth_dst[ETH_ALEN];
 103                         u8 eth_dst_mask[ETH_ALEN];
 104                         __be16 eth_type;
 105                         __be16 vlan_id;
 106                         __be16 vlan_id_mask;
 107                         u8 ip_proto;
 108                         u8 ip_proto_mask;
 109                         u8 ip_tos;
 110                         u8 ip_tos_mask;
 111                         u32 group_id;
 112                 } acl;
 113         };
 114 };
 115
 116 struct rocker_flow_tbl_entry {
 117         struct hlist_node entry;
 118         u32 cmd;
 119         u64 cookie;
 120         struct rocker_flow_tbl_key key;
 121         size_t key_len;
 122         u32 key_crc32; /* key */
 123 };
 124
 125 struct rocker_group_tbl_entry {
 126         struct hlist_node entry;
 127         u32 cmd;
 128         u32 group_id; /* key */
 129         u16 group_count;
 130         u32 *group_ids;
 131         union {
 132                 struct {
 133                         u8 pop_vlan;
 134                 } l2_interface;
 135                 struct {
 136                         u8 eth_src[ETH_ALEN];
 137                         u8 eth_dst[ETH_ALEN];
 138                         __be16 vlan_id;
 139                         u32 group_id;
 140                 } l2_rewrite;
 141                 struct {
 142                         u8 eth_src[ETH_ALEN];
 143                         u8 eth_dst[ETH_ALEN];
 144                         __be16 vlan_id;
 145                         bool ttl_check;
 146                         u32 group_id;
 147                 } l3_unicast;
 148         };
 149 };
 150
 151 struct rocker_fdb_tbl_entry {
 152         struct hlist_node entry;
 153         u32 key_crc32; /* key */
 154         bool learned;
 155         unsigned long touched;
 156         struct rocker_fdb_tbl_key {
 157                 struct rocker_port *rocker_port;
 158                 u8 addr[ETH_ALEN];
 159                 __be16 vlan_id;
 160         } key;
 161 };
 162
 163 struct rocker_internal_vlan_tbl_entry {
 164         struct hlist_node entry;
 165         int ifindex; /* key */
 166         u32 ref_count;
 167         __be16 vlan_id;
 168 };
 169
 170 struct rocker_neigh_tbl_entry {
 171         struct hlist_node entry;
 172         __be32 ip_addr; /* key */
 173         struct net_device *dev;
 174         u32 ref_count;
 175         u32 index;
 176         u8 eth_dst[ETH_ALEN];
 177         bool ttl_check;
 178 };
 179
 180 struct rocker_desc_info {
 181         char *data; /* mapped */
 182         size_t data_size;
 183         size_t tlv_size;
 184         struct rocker_desc *desc;
 185         dma_addr_t mapaddr;
 186 };
 187
 188 struct rocker_dma_ring_info {
 189         size_t size;
 190         u32 head;
 191         u32 tail;
 192         struct rocker_desc *desc; /* mapped */
 193         dma_addr_t mapaddr;
 194         struct rocker_desc_info *desc_info;
 195         unsigned int type;
 196 };
 197
 198 struct rocker;
 199
 200 enum {
 201         ROCKER_CTRL_LINK_LOCAL_MCAST,
 202         ROCKER_CTRL_LOCAL_ARP,
 203         ROCKER_CTRL_IPV4_MCAST,
 204         ROCKER_CTRL_IPV6_MCAST,
 205         ROCKER_CTRL_DFLT_BRIDGING,
 206         ROCKER_CTRL_DFLT_OVS,
 207         ROCKER_CTRL_MAX,
 208 };
 209
 210 #define ROCKER_INTERNAL_VLAN_ID_BASE    0x0f00
 211 #define ROCKER_N_INTERNAL_VLANS         255
 212 #define ROCKER_VLAN_BITMAP_LEN          BITS_TO_LONGS(VLAN_N_VID)
 213 #define ROCKER_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(ROCKER_N_INTERNAL_VLANS)
 214
 215 struct rocker_port {
 216         struct net_device *dev;
 217         struct net_device *bridge_dev;
 218         struct rocker *rocker;
 219         unsigned int port_number;
 220         u32 pport;
 221         __be16 internal_vlan_id;
 222         int stp_state;
 223         u32 brport_flags;
 224         unsigned long ageing_time;
 225         bool ctrls[ROCKER_CTRL_MAX];
 226         unsigned long vlan_bitmap[ROCKER_VLAN_BITMAP_LEN];
 227         struct napi_struct napi_tx;
 228         struct napi_struct napi_rx;
 229         struct rocker_dma_ring_info tx_ring;
 230         struct rocker_dma_ring_info rx_ring;
 231 };
 232
 233 struct rocker {
 234         struct pci_dev *pdev;
 235         u8 __iomem *hw_addr;
 236         struct msix_entry *msix_entries;
 237         unsigned int port_count;
 238         struct rocker_port **ports;
 239         struct {
 240                 u64 id;
 241         } hw;
 242         unsigned long ageing_time;
 243         spinlock_t cmd_ring_lock;               /* for cmd ring accesses */
 244         struct rocker_dma_ring_info cmd_ring;
 245         struct rocker_dma_ring_info event_ring;
 246         DECLARE_HASHTABLE(flow_tbl, 16);
 247         spinlock_t flow_tbl_lock;               /* for flow tbl accesses */
 248         u64 flow_tbl_next_cookie;
 249         DECLARE_HASHTABLE(group_tbl, 16);
 250         spinlock_t group_tbl_lock;              /* for group tbl accesses */
 251         struct timer_list fdb_cleanup_timer;
 252         DECLARE_HASHTABLE(fdb_tbl, 16);
 253         spinlock_t fdb_tbl_lock;                /* for fdb tbl accesses */
 254         unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN];
 255         DECLARE_HASHTABLE(internal_vlan_tbl, 8);
 256         spinlock_t internal_vlan_tbl_lock;      /* for vlan tbl accesses */
 257         DECLARE_HASHTABLE(neigh_tbl, 16);
 258         spinlock_t neigh_tbl_lock;              /* for neigh tbl accesses */
 259         u32 neigh_tbl_next_index;
 260 };
 261
 262 static const u8 zero_mac[ETH_ALEN]   = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
 263 static const u8 ff_mac[ETH_ALEN]     = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 264 static const u8 ll_mac[ETH_ALEN]     = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
 265 static const u8 ll_mask[ETH_ALEN]    = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
 266 static const u8 mcast_mac[ETH_ALEN]  = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
 267 static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
 268 static const u8 ipv4_mask[ETH_ALEN]  = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
 269 static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
 270 static const u8 ipv6_mask[ETH_ALEN]  = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
 271
 272 /* Rocker priority levels for flow table entries.  Higher
 273  * priority match takes precedence over lower priority match.
 274  */
 275
 276 enum {
 277         ROCKER_PRIORITY_UNKNOWN = 0,
 278         ROCKER_PRIORITY_IG_PORT = 1,
 279         ROCKER_PRIORITY_VLAN = 1,
 280         ROCKER_PRIORITY_TERM_MAC_UCAST = 0,
 281         ROCKER_PRIORITY_TERM_MAC_MCAST = 1,
 282         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
 283         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
 284         ROCKER_PRIORITY_BRIDGING_VLAN = 3,
 285         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
 286         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
 287         ROCKER_PRIORITY_BRIDGING_TENANT = 3,
 288         ROCKER_PRIORITY_ACL_CTRL = 3,
 289         ROCKER_PRIORITY_ACL_NORMAL = 2,
 290         ROCKER_PRIORITY_ACL_DFLT = 1,
 291 };
 292
 293 static bool rocker_vlan_id_is_internal(__be16 vlan_id)
 294 {
 295         u16 start = ROCKER_INTERNAL_VLAN_ID_BASE;
 296         u16 end = 0xffe;
 297         u16 _vlan_id = ntohs(vlan_id);
 298
 299         return (_vlan_id >= start && _vlan_id <= end);
 300 }
 301
 302 static __be16 rocker_port_vid_to_vlan(const struct rocker_port *rocker_port,
 303                                       u16 vid, bool *pop_vlan)
 304 {
 305         __be16 vlan_id;
 306
 307         if (pop_vlan)
 308                 *pop_vlan = false;
 309         vlan_id = htons(vid);
 310         if (!vlan_id) {
 311                 vlan_id = rocker_port->internal_vlan_id;
 312                 if (pop_vlan)
 313                         *pop_vlan = true;
 314         }
 315
 316         return vlan_id;
 317 }
 318
 319 static u16 rocker_port_vlan_to_vid(const struct rocker_port *rocker_port,
 320                                    __be16 vlan_id)
 321 {
 322         if (rocker_vlan_id_is_internal(vlan_id))
 323                 return 0;
 324
 325         return ntohs(vlan_id);
 326 }
 327
 328 static bool rocker_port_is_bridged(const struct rocker_port *rocker_port)
 329 {
 330         return rocker_port->bridge_dev &&
 331                netif_is_bridge_master(rocker_port->bridge_dev);
 332 }
 333
 334 static bool rocker_port_is_ovsed(const struct rocker_port *rocker_port)
 335 {
 336         return rocker_port->bridge_dev &&
 337                netif_is_ovs_master(rocker_port->bridge_dev);
 338 }
 339
 340 #define ROCKER_OP_FLAG_REMOVE           BIT(0)
 341 #define ROCKER_OP_FLAG_NOWAIT           BIT(1)
 342 #define ROCKER_OP_FLAG_LEARNED          BIT(2)
 343 #define ROCKER_OP_FLAG_REFRESH          BIT(3)
 344
 345 static void *__rocker_port_mem_alloc(struct rocker_port *rocker_port,
 346                                      struct switchdev_trans *trans, int flags,
 347                                      size_t size)
 348 {
 349         struct switchdev_trans_item *elem = NULL;
 350         gfp_t gfp_flags = (flags & ROCKER_OP_FLAG_NOWAIT) ?
 351                           GFP_ATOMIC : GFP_KERNEL;
 352
 353         /* If in transaction prepare phase, allocate the memory
 354          * and enqueue it on a transaction.  If in transaction
 355          * commit phase, dequeue the memory from the transaction
 356          * rather than re-allocating the memory.  The idea is the
 357          * driver code paths for prepare and commit are identical
 358          * so the memory allocated in the prepare phase is the
 359          * memory used in the commit phase.
 360          */
 361
 362         if (!trans) {
 363                 elem = kzalloc(size + sizeof(*elem), gfp_flags);
 364         } else if (switchdev_trans_ph_prepare(trans)) {
 365                 elem = kzalloc(size + sizeof(*elem), gfp_flags);
 366                 if (!elem)
 367                         return NULL;
 368                 switchdev_trans_item_enqueue(trans, elem, kfree, elem);
 369         } else {
 370                 elem = switchdev_trans_item_dequeue(trans);
 371         }
 372
 373         return elem ? elem + 1 : NULL;
 374 }
 375
 376 static void *rocker_port_kzalloc(struct rocker_port *rocker_port,
 377                                  struct switchdev_trans *trans, int flags,
 378                                  size_t size)
 379 {
 380         return __rocker_port_mem_alloc(rocker_port, trans, flags, size);
 381 }
 382
 383 static void *rocker_port_kcalloc(struct rocker_port *rocker_port,
 384                                  struct switchdev_trans *trans, int flags,
 385                                  size_t n, size_t size)
 386 {
 387         return __rocker_port_mem_alloc(rocker_port, trans, flags, n * size);
 388 }
 389
 390 static void rocker_port_kfree(struct switchdev_trans *trans, const void *mem)
 391 {
 392         struct switchdev_trans_item *elem;
 393
 394         /* Frees are ignored if in transaction prepare phase.  The
 395          * memory remains on the per-port list until freed in the
 396          * commit phase.
 397          */
 398
 399         if (switchdev_trans_ph_prepare(trans))
 400                 return;
 401
 402         elem = (struct switchdev_trans_item *) mem - 1;
 403         kfree(elem);
 404 }
 405
 406 struct rocker_wait {
 407         wait_queue_head_t wait;
 408         bool done;
 409         bool nowait;
 410 };
 411
 412 static void rocker_wait_reset(struct rocker_wait *wait)
 413 {
 414         wait->done = false;
 415         wait->nowait = false;
 416 }
 417
 418 static void rocker_wait_init(struct rocker_wait *wait)
 419 {
 420         init_waitqueue_head(&wait->wait);
 421         rocker_wait_reset(wait);
 422 }
 423
 424 static struct rocker_wait *rocker_wait_create(struct rocker_port *rocker_port,
 425                                               struct switchdev_trans *trans,
 426                                               int flags)
 427 {
 428         struct rocker_wait *wait;
 429
 430         wait = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*wait));
 431         if (!wait)
 432                 return NULL;
 433         rocker_wait_init(wait);
 434         return wait;
 435 }
 436
 437 static void rocker_wait_destroy(struct switchdev_trans *trans,
 438                                 struct rocker_wait *wait)
 439 {
 440         rocker_port_kfree(trans, wait);
 441 }
 442
 443 static bool rocker_wait_event_timeout(struct rocker_wait *wait,
 444                                       unsigned long timeout)
 445 {
 446         wait_event_timeout(wait->wait, wait->done, HZ / 10);
 447         if (!wait->done)
 448                 return false;
 449         return true;
 450 }
 451
 452 static void rocker_wait_wake_up(struct rocker_wait *wait)
 453 {
 454         wait->done = true;
 455         wake_up(&wait->wait);
 456 }
 457
 458 static u32 rocker_msix_vector(const struct rocker *rocker, unsigned int vector)
 459 {
 460         return rocker->msix_entries[vector].vector;
 461 }
 462
 463 static u32 rocker_msix_tx_vector(const struct rocker_port *rocker_port)
 464 {
 465         return rocker_msix_vector(rocker_port->rocker,
 466                                   ROCKER_MSIX_VEC_TX(rocker_port->port_number));
 467 }
 468
 469 static u32 rocker_msix_rx_vector(const struct rocker_port *rocker_port)
 470 {
 471         return rocker_msix_vector(rocker_port->rocker,
 472                                   ROCKER_MSIX_VEC_RX(rocker_port->port_number));
 473 }
 474
 475 #define rocker_write32(rocker, reg, val)        \
 476         writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 477 #define rocker_read32(rocker, reg)      \
 478         readl((rocker)->hw_addr + (ROCKER_ ## reg))
 479 #define rocker_write64(rocker, reg, val)        \
 480         writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 481 #define rocker_read64(rocker, reg)      \
 482         readq((rocker)->hw_addr + (ROCKER_ ## reg))
 483
 484 /*****************************
 485  * HW basic testing functions
 486  *****************************/
 487
 488 static int rocker_reg_test(const struct rocker *rocker)
 489 {
 490         const struct pci_dev *pdev = rocker->pdev;
 491         u64 test_reg;
 492         u64 rnd;
 493
 494         rnd = prandom_u32();
 495         rnd >>= 1;
 496         rocker_write32(rocker, TEST_REG, rnd);
 497         test_reg = rocker_read32(rocker, TEST_REG);
 498         if (test_reg != rnd * 2) {
 499                 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
 500                         test_reg, rnd * 2);
 501                 return -EIO;
 502         }
 503
 504         rnd = prandom_u32();
 505         rnd <<= 31;
 506         rnd |= prandom_u32();
 507         rocker_write64(rocker, TEST_REG64, rnd);
 508         test_reg = rocker_read64(rocker, TEST_REG64);
 509         if (test_reg != rnd * 2) {
 510                 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
 511                         test_reg, rnd * 2);
 512                 return -EIO;
 513         }
 514
 515         return 0;
 516 }
 517
 518 static int rocker_dma_test_one(const struct rocker *rocker,
 519                                struct rocker_wait *wait, u32 test_type,
 520                                dma_addr_t dma_handle, const unsigned char *buf,
 521                                const unsigned char *expect, size_t size)
 522 {
 523         const struct pci_dev *pdev = rocker->pdev;
 524         int i;
 525
 526         rocker_wait_reset(wait);
 527         rocker_write32(rocker, TEST_DMA_CTRL, test_type);
 528
 529         if (!rocker_wait_event_timeout(wait, HZ / 10)) {
 530                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 531                 return -EIO;
 532         }
 533
 534         for (i = 0; i < size; i++) {
 535                 if (buf[i] != expect[i]) {
 536                         dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
 537                                 buf[i], i, expect[i]);
 538                         return -EIO;
 539                 }
 540         }
 541         return 0;
 542 }
 543
 544 #define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
 545 #define ROCKER_TEST_DMA_FILL_PATTERN 0x96
 546
 547 static int rocker_dma_test_offset(const struct rocker *rocker,
 548                                   struct rocker_wait *wait, int offset)
 549 {
 550         struct pci_dev *pdev = rocker->pdev;
 551         unsigned char *alloc;
 552         unsigned char *buf;
 553         unsigned char *expect;
 554         dma_addr_t dma_handle;
 555         int i;
 556         int err;
 557
 558         alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
 559                         GFP_KERNEL | GFP_DMA);
 560         if (!alloc)
 561                 return -ENOMEM;
 562         buf = alloc + offset;
 563         expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
 564
 565         dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
 566                                     PCI_DMA_BIDIRECTIONAL);
 567         if (pci_dma_mapping_error(pdev, dma_handle)) {
 568                 err = -EIO;
 569                 goto free_alloc;
 570         }
 571
 572         rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
 573         rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
 574
 575         memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
 576         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
 577                                   dma_handle, buf, expect,
 578                                   ROCKER_TEST_DMA_BUF_SIZE);
 579         if (err)
 580                 goto unmap;
 581
 582         memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
 583         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
 584                                   dma_handle, buf, expect,
 585                                   ROCKER_TEST_DMA_BUF_SIZE);
 586         if (err)
 587                 goto unmap;
 588
 589         prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
 590         for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
 591                 expect[i] = ~buf[i];
 592         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
 593                                   dma_handle, buf, expect,
 594                                   ROCKER_TEST_DMA_BUF_SIZE);
 595         if (err)
 596                 goto unmap;
 597
 598 unmap:
 599         pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
 600                          PCI_DMA_BIDIRECTIONAL);
 601 free_alloc:
 602         kfree(alloc);
 603
 604         return err;
 605 }
 606
 607 static int rocker_dma_test(const struct rocker *rocker,
 608                            struct rocker_wait *wait)
 609 {
 610         int i;
 611         int err;
 612
 613         for (i = 0; i < 8; i++) {
 614                 err = rocker_dma_test_offset(rocker, wait, i);
 615                 if (err)
 616                         return err;
 617         }
 618         return 0;
 619 }
 620
 621 static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
 622 {
 623         struct rocker_wait *wait = dev_id;
 624
 625         rocker_wait_wake_up(wait);
 626
 627         return IRQ_HANDLED;
 628 }
 629
 630 static int rocker_basic_hw_test(const struct rocker *rocker)
 631 {
 632         const struct pci_dev *pdev = rocker->pdev;
 633         struct rocker_wait wait;
 634         int err;
 635
 636         err = rocker_reg_test(rocker);
 637         if (err) {
 638                 dev_err(&pdev->dev, "reg test failed\n");
 639                 return err;
 640         }
 641
 642         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
 643                           rocker_test_irq_handler, 0,
 644                           rocker_driver_name, &wait);
 645         if (err) {
 646                 dev_err(&pdev->dev, "cannot assign test irq\n");
 647                 return err;
 648         }
 649
 650         rocker_wait_init(&wait);
 651         rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
 652
 653         if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
 654                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 655                 err = -EIO;
 656                 goto free_irq;
 657         }
 658
 659         err = rocker_dma_test(rocker, &wait);
 660         if (err)
 661                 dev_err(&pdev->dev, "dma test failed\n");
 662
 663 free_irq:
 664         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
 665         return err;
 666 }
 667
 668 /******
 669  * TLV
 670  ******/
 671
 672 #define ROCKER_TLV_ALIGNTO 8U
 673 #define ROCKER_TLV_ALIGN(len) \
 674         (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1))
 675 #define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv))
 676
 677 /*  <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) --->
 678  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
 679  * |             Header          | Pad |           Payload           | Pad |
 680  * |      (struct rocker_tlv)    | ing |                             | ing |
 681  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
 682  *  <--------------------------- tlv->len -------------------------->
 683  */
 684
 685 static struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv,
 686                                           int *remaining)
 687 {
 688         int totlen = ROCKER_TLV_ALIGN(tlv->len);
 689
 690         *remaining -= totlen;
 691         return (struct rocker_tlv *) ((char *) tlv + totlen);
 692 }
 693
 694 static int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining)
 695 {
 696         return remaining >= (int) ROCKER_TLV_HDRLEN &&
 697                tlv->len >= ROCKER_TLV_HDRLEN &&
 698                tlv->len <= remaining;
 699 }
 700
 701 #define rocker_tlv_for_each(pos, head, len, rem)        \
 702         for (pos = head, rem = len;                     \
 703              rocker_tlv_ok(pos, rem);                   \
 704              pos = rocker_tlv_next(pos, &(rem)))
 705
 706 #define rocker_tlv_for_each_nested(pos, tlv, rem)       \
 707         rocker_tlv_for_each(pos, rocker_tlv_data(tlv),  \
 708                             rocker_tlv_len(tlv), rem)
 709
 710 static int rocker_tlv_attr_size(int payload)
 711 {
 712         return ROCKER_TLV_HDRLEN + payload;
 713 }
 714
 715 static int rocker_tlv_total_size(int payload)
 716 {
 717         return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload));
 718 }
 719
 720 static int rocker_tlv_padlen(int payload)
 721 {
 722         return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload);
 723 }
 724
 725 static int rocker_tlv_type(const struct rocker_tlv *tlv)
 726 {
 727         return tlv->type;
 728 }
 729
 730 static void *rocker_tlv_data(const struct rocker_tlv *tlv)
 731 {
 732         return (char *) tlv + ROCKER_TLV_HDRLEN;
 733 }
 734
 735 static int rocker_tlv_len(const struct rocker_tlv *tlv)
 736 {
 737         return tlv->len - ROCKER_TLV_HDRLEN;
 738 }
 739
 740 static u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv)
 741 {
 742         return *(u8 *) rocker_tlv_data(tlv);
 743 }
 744
 745 static u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv)
 746 {
 747         return *(u16 *) rocker_tlv_data(tlv);
 748 }
 749
 750 static __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv)
 751 {
 752         return *(__be16 *) rocker_tlv_data(tlv);
 753 }
 754
 755 static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv)
 756 {
 757         return *(u32 *) rocker_tlv_data(tlv);
 758 }
 759
 760 static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv)
 761 {
 762         return *(u64 *) rocker_tlv_data(tlv);
 763 }
 764
 765 static void rocker_tlv_parse(const struct rocker_tlv **tb, int maxtype,
 766                              const char *buf, int buf_len)
 767 {
 768         const struct rocker_tlv *tlv;
 769         const struct rocker_tlv *head = (const struct rocker_tlv *) buf;
 770         int rem;
 771
 772         memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1));
 773
 774         rocker_tlv_for_each(tlv, head, buf_len, rem) {
 775                 u32 type = rocker_tlv_type(tlv);
 776
 777                 if (type > 0 && type <= maxtype)
 778                         tb[type] = tlv;
 779         }
 780 }
 781
 782 static void rocker_tlv_parse_nested(const struct rocker_tlv **tb, int maxtype,
 783                                     const struct rocker_tlv *tlv)
 784 {
 785         rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv),
 786                          rocker_tlv_len(tlv));
 787 }
 788
 789 static void rocker_tlv_parse_desc(const struct rocker_tlv **tb, int maxtype,
 790                                   const struct rocker_desc_info *desc_info)
 791 {
 792         rocker_tlv_parse(tb, maxtype, desc_info->data,
 793                          desc_info->desc->tlv_size);
 794 }
 795
 796 static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info)
 797 {
 798         return (struct rocker_tlv *) ((char *) desc_info->data +
 799                                                desc_info->tlv_size);
 800 }
 801
 802 static int rocker_tlv_put(struct rocker_desc_info *desc_info,
 803                           int attrtype, int attrlen, const void *data)
 804 {
 805         int tail_room = desc_info->data_size - desc_info->tlv_size;
 806         int total_size = rocker_tlv_total_size(attrlen);
 807         struct rocker_tlv *tlv;
 808
 809         if (unlikely(tail_room < total_size))
 810                 return -EMSGSIZE;
 811
 812         tlv = rocker_tlv_start(desc_info);
 813         desc_info->tlv_size += total_size;
 814         tlv->type = attrtype;
 815         tlv->len = rocker_tlv_attr_size(attrlen);
 816         memcpy(rocker_tlv_data(tlv), data, attrlen);
 817         memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen));
 818         return 0;
 819 }
 820
 821 static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info,
 822                              int attrtype, u8 value)
 823 {
 824         return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value);
 825 }
 826
 827 static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info,
 828                               int attrtype, u16 value)
 829 {
 830         return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value);
 831 }
 832
 833 static int rocker_tlv_put_be16(struct rocker_desc_info *desc_info,
 834                                int attrtype, __be16 value)
 835 {
 836         return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &value);
 837 }
 838
 839 static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info,
 840                               int attrtype, u32 value)
 841 {
 842         return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value);
 843 }
 844
 845 static int rocker_tlv_put_be32(struct rocker_desc_info *desc_info,
 846                                int attrtype, __be32 value)
 847 {
 848         return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &value);
 849 }
 850
 851 static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info,
 852                               int attrtype, u64 value)
 853 {
 854         return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value);
 855 }
 856
 857 static struct rocker_tlv *
 858 rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype)
 859 {
 860         struct rocker_tlv *start = rocker_tlv_start(desc_info);
 861
 862         if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0)
 863                 return NULL;
 864
 865         return start;
 866 }
 867
 868 static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info,
 869                                 struct rocker_tlv *start)
 870 {
 871         start->len = (char *) rocker_tlv_start(desc_info) - (char *) start;
 872 }
 873
 874 static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info,
 875                                    const struct rocker_tlv *start)
 876 {
 877         desc_info->tlv_size = (const char *) start - desc_info->data;
 878 }
 879
 880 /******************************************
 881  * DMA rings and descriptors manipulations
 882  ******************************************/
 883
 884 static u32 __pos_inc(u32 pos, size_t limit)
 885 {
 886         return ++pos == limit ? 0 : pos;
 887 }
 888
 889 static int rocker_desc_err(const struct rocker_desc_info *desc_info)
 890 {
 891         int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN;
 892
 893         switch (err) {
 894         case ROCKER_OK:
 895                 return 0;
 896         case -ROCKER_ENOENT:
 897                 return -ENOENT;
 898         case -ROCKER_ENXIO:
 899                 return -ENXIO;
 900         case -ROCKER_ENOMEM:
 901                 return -ENOMEM;
 902         case -ROCKER_EEXIST:
 903                 return -EEXIST;
 904         case -ROCKER_EINVAL:
 905                 return -EINVAL;
 906         case -ROCKER_EMSGSIZE:
 907                 return -EMSGSIZE;
 908         case -ROCKER_ENOTSUP:
 909                 return -EOPNOTSUPP;
 910         case -ROCKER_ENOBUFS:
 911                 return -ENOBUFS;
 912         }
 913
 914         return -EINVAL;
 915 }
 916
 917 static void rocker_desc_gen_clear(const struct rocker_desc_info *desc_info)
 918 {
 919         desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
 920 }
 921
 922 static bool rocker_desc_gen(const struct rocker_desc_info *desc_info)
 923 {
 924         u32 comp_err = desc_info->desc->comp_err;
 925
 926         return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
 927 }
 928
 929 static void *rocker_desc_cookie_ptr_get(const struct rocker_desc_info *desc_info)
 930 {
 931         return (void *)(uintptr_t)desc_info->desc->cookie;
 932 }
 933
 934 static void rocker_desc_cookie_ptr_set(const struct rocker_desc_info *desc_info,
 935                                        void *ptr)
 936 {
 937         desc_info->desc->cookie = (uintptr_t) ptr;
 938 }
 939
 940 static struct rocker_desc_info *
 941 rocker_desc_head_get(const struct rocker_dma_ring_info *info)
 942 {
 943         static struct rocker_desc_info *desc_info;
 944         u32 head = __pos_inc(info->head, info->size);
 945
 946         desc_info = &info->desc_info[info->head];
 947         if (head == info->tail)
 948                 return NULL; /* ring full */
 949         desc_info->tlv_size = 0;
 950         return desc_info;
 951 }
 952
 953 static void rocker_desc_commit(const struct rocker_desc_info *desc_info)
 954 {
 955         desc_info->desc->buf_size = desc_info->data_size;
 956         desc_info->desc->tlv_size = desc_info->tlv_size;
 957 }
 958
 959 static void rocker_desc_head_set(const struct rocker *rocker,
 960                                  struct rocker_dma_ring_info *info,
 961                                  const struct rocker_desc_info *desc_info)
 962 {
 963         u32 head = __pos_inc(info->head, info->size);
 964
 965         BUG_ON(head == info->tail);
 966         rocker_desc_commit(desc_info);
 967         info->head = head;
 968         rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
 969 }
 970
 971 static struct rocker_desc_info *
 972 rocker_desc_tail_get(struct rocker_dma_ring_info *info)
 973 {
 974         static struct rocker_desc_info *desc_info;
 975
 976         if (info->tail == info->head)
 977                 return NULL; /* nothing to be done between head and tail */
 978         desc_info = &info->desc_info[info->tail];
 979         if (!rocker_desc_gen(desc_info))
 980                 return NULL; /* gen bit not set, desc is not ready yet */
 981         info->tail = __pos_inc(info->tail, info->size);
 982         desc_info->tlv_size = desc_info->desc->tlv_size;
 983         return desc_info;
 984 }
 985
 986 static void rocker_dma_ring_credits_set(const struct rocker *rocker,
 987                                         const struct rocker_dma_ring_info *info,
 988                                         u32 credits)
 989 {
 990         if (credits)
 991                 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
 992 }
 993
 994 static unsigned long rocker_dma_ring_size_fix(size_t size)
 995 {
 996         return max(ROCKER_DMA_SIZE_MIN,
 997                    min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
 998 }
 999
1000 static int rocker_dma_ring_create(const struct rocker *rocker,
1001                                   unsigned int type,
1002                                   size_t size,
1003                                   struct rocker_dma_ring_info *info)
1004 {
1005         int i;
1006
1007         BUG_ON(size != rocker_dma_ring_size_fix(size));
1008         info->size = size;
1009         info->type = type;
1010         info->head = 0;
1011         info->tail = 0;
1012         info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
1013                                   GFP_KERNEL);
1014         if (!info->desc_info)
1015                 return -ENOMEM;
1016
1017         info->desc = pci_alloc_consistent(rocker->pdev,
1018                                           info->size * sizeof(*info->desc),
1019                                           &info->mapaddr);
1020         if (!info->desc) {
1021                 kfree(info->desc_info);
1022                 return -ENOMEM;
1023         }
1024
1025         for (i = 0; i < info->size; i++)
1026                 info->desc_info[i].desc = &info->desc[i];
1027
1028         rocker_write32(rocker, DMA_DESC_CTRL(info->type),
1029                        ROCKER_DMA_DESC_CTRL_RESET);
1030         rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
1031         rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
1032
1033         return 0;
1034 }
1035
1036 static void rocker_dma_ring_destroy(const struct rocker *rocker,
1037                                     const struct rocker_dma_ring_info *info)
1038 {
1039         rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
1040
1041         pci_free_consistent(rocker->pdev,
1042                             info->size * sizeof(struct rocker_desc),
1043                             info->desc, info->mapaddr);
1044         kfree(info->desc_info);
1045 }
1046
1047 static void rocker_dma_ring_pass_to_producer(const struct rocker *rocker,
1048                                              struct rocker_dma_ring_info *info)
1049 {
1050         int i;
1051
1052         BUG_ON(info->head || info->tail);
1053
1054         /* When ring is consumer, we need to advance head for each desc.
1055          * That tells hw that the desc is ready to be used by it.
1056          */
1057         for (i = 0; i < info->size - 1; i++)
1058                 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
1059         rocker_desc_commit(&info->desc_info[i]);
1060 }
1061
1062 static int rocker_dma_ring_bufs_alloc(const struct rocker *rocker,
1063                                       const struct rocker_dma_ring_info *info,
1064                                       int direction, size_t buf_size)
1065 {
1066         struct pci_dev *pdev = rocker->pdev;
1067         int i;
1068         int err;
1069
1070         for (i = 0; i < info->size; i++) {
1071                 struct rocker_desc_info *desc_info = &info->desc_info[i];
1072                 struct rocker_desc *desc = &info->desc[i];
1073                 dma_addr_t dma_handle;
1074                 char *buf;
1075
1076                 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
1077                 if (!buf) {
1078                         err = -ENOMEM;
1079                         goto rollback;
1080                 }
1081
1082                 dma_handle = pci_map_single(pdev, buf, buf_size, direction);
1083                 if (pci_dma_mapping_error(pdev, dma_handle)) {
1084                         kfree(buf);
1085                         err = -EIO;
1086                         goto rollback;
1087                 }
1088
1089                 desc_info->data = buf;
1090                 desc_info->data_size = buf_size;
1091                 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
1092
1093                 desc->buf_addr = dma_handle;
1094                 desc->buf_size = buf_size;
1095         }
1096         return 0;
1097
1098 rollback:
1099         for (i--; i >= 0; i--) {
1100                 const struct rocker_desc_info *desc_info = &info->desc_info[i];
1101
1102                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1103                                  desc_info->data_size, direction);
1104                 kfree(desc_info->data);
1105         }
1106         return err;
1107 }
1108
1109 static void rocker_dma_ring_bufs_free(const struct rocker *rocker,
1110                                       const struct rocker_dma_ring_info *info,
1111                                       int direction)
1112 {
1113         struct pci_dev *pdev = rocker->pdev;
1114         int i;
1115
1116         for (i = 0; i < info->size; i++) {
1117                 const struct rocker_desc_info *desc_info = &info->desc_info[i];
1118                 struct rocker_desc *desc = &info->desc[i];
1119
1120                 desc->buf_addr = 0;
1121                 desc->buf_size = 0;
1122                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1123                                  desc_info->data_size, direction);
1124                 kfree(desc_info->data);
1125         }
1126 }
1127
1128 static int rocker_dma_rings_init(struct rocker *rocker)
1129 {
1130         const struct pci_dev *pdev = rocker->pdev;
1131         int err;
1132
1133         err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
1134                                      ROCKER_DMA_CMD_DEFAULT_SIZE,
1135                                      &rocker->cmd_ring);
1136         if (err) {
1137                 dev_err(&pdev->dev, "failed to create command dma ring\n");
1138                 return err;
1139         }
1140
1141         spin_lock_init(&rocker->cmd_ring_lock);
1142
1143         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
1144                                          PCI_DMA_BIDIRECTIONAL, PAGE_SIZE);
1145         if (err) {
1146                 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
1147                 goto err_dma_cmd_ring_bufs_alloc;
1148         }
1149
1150         err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
1151                                      ROCKER_DMA_EVENT_DEFAULT_SIZE,
1152                                      &rocker->event_ring);
1153         if (err) {
1154                 dev_err(&pdev->dev, "failed to create event dma ring\n");
1155                 goto err_dma_event_ring_create;
1156         }
1157
1158         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
1159                                          PCI_DMA_FROMDEVICE, PAGE_SIZE);
1160         if (err) {
1161                 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
1162                 goto err_dma_event_ring_bufs_alloc;
1163         }
1164         rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
1165         return 0;
1166
1167 err_dma_event_ring_bufs_alloc:
1168         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1169 err_dma_event_ring_create:
1170         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1171                                   PCI_DMA_BIDIRECTIONAL);
1172 err_dma_cmd_ring_bufs_alloc:
1173         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1174         return err;
1175 }
1176
1177 static void rocker_dma_rings_fini(struct rocker *rocker)
1178 {
1179         rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
1180                                   PCI_DMA_BIDIRECTIONAL);
1181         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1182         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1183                                   PCI_DMA_BIDIRECTIONAL);
1184         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1185 }
1186
1187 static int rocker_dma_rx_ring_skb_map(const struct rocker_port *rocker_port,
1188                                       struct rocker_desc_info *desc_info,
1189                                       struct sk_buff *skb, size_t buf_len)
1190 {
1191         const struct rocker *rocker = rocker_port->rocker;
1192         struct pci_dev *pdev = rocker->pdev;
1193         dma_addr_t dma_handle;
1194
1195         dma_handle = pci_map_single(pdev, skb->data, buf_len,
1196                                     PCI_DMA_FROMDEVICE);
1197         if (pci_dma_mapping_error(pdev, dma_handle))
1198                 return -EIO;
1199         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
1200                 goto tlv_put_failure;
1201         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
1202                 goto tlv_put_failure;
1203         return 0;
1204
1205 tlv_put_failure:
1206         pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
1207         desc_info->tlv_size = 0;
1208         return -EMSGSIZE;
1209 }
1210
1211 static size_t rocker_port_rx_buf_len(const struct rocker_port *rocker_port)
1212 {
1213         return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1214 }
1215
1216 static int rocker_dma_rx_ring_skb_alloc(const struct rocker_port *rocker_port,
1217                                         struct rocker_desc_info *desc_info)
1218 {
1219         struct net_device *dev = rocker_port->dev;
1220         struct sk_buff *skb;
1221         size_t buf_len = rocker_port_rx_buf_len(rocker_port);
1222         int err;
1223
1224         /* Ensure that hw will see tlv_size zero in case of an error.
1225          * That tells hw to use another descriptor.
1226          */
1227         rocker_desc_cookie_ptr_set(desc_info, NULL);
1228         desc_info->tlv_size = 0;
1229
1230         skb = netdev_alloc_skb_ip_align(dev, buf_len);
1231         if (!skb)
1232                 return -ENOMEM;
1233         err = rocker_dma_rx_ring_skb_map(rocker_port, desc_info, skb, buf_len);
1234         if (err) {
1235                 dev_kfree_skb_any(skb);
1236                 return err;
1237         }
1238         rocker_desc_cookie_ptr_set(desc_info, skb);
1239         return 0;
1240 }
1241
1242 static void rocker_dma_rx_ring_skb_unmap(const struct rocker *rocker,
1243                                          const struct rocker_tlv **attrs)
1244 {
1245         struct pci_dev *pdev = rocker->pdev;
1246         dma_addr_t dma_handle;
1247         size_t len;
1248
1249         if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
1250             !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
1251                 return;
1252         dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
1253         len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
1254         pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
1255 }
1256
1257 static void rocker_dma_rx_ring_skb_free(const struct rocker *rocker,
1258                                         const struct rocker_desc_info *desc_info)
1259 {
1260         const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
1261         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
1262
1263         if (!skb)
1264                 return;
1265         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
1266         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
1267         dev_kfree_skb_any(skb);
1268 }
1269
1270 static int rocker_dma_rx_ring_skbs_alloc(const struct rocker_port *rocker_port)
1271 {
1272         const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1273         const struct rocker *rocker = rocker_port->rocker;
1274         int i;
1275         int err;
1276
1277         for (i = 0; i < rx_ring->size; i++) {
1278                 err = rocker_dma_rx_ring_skb_alloc(rocker_port,
1279                                                    &rx_ring->desc_info[i]);
1280                 if (err)
1281                         goto rollback;
1282         }
1283         return 0;
1284
1285 rollback:
1286         for (i--; i >= 0; i--)
1287                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1288         return err;
1289 }
1290
1291 static void rocker_dma_rx_ring_skbs_free(const struct rocker_port *rocker_port)
1292 {
1293         const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1294         const struct rocker *rocker = rocker_port->rocker;
1295         int i;
1296
1297         for (i = 0; i < rx_ring->size; i++)
1298                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1299 }
1300
1301 static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
1302 {
1303         struct rocker *rocker = rocker_port->rocker;
1304         int err;
1305
1306         err = rocker_dma_ring_create(rocker,
1307                                      ROCKER_DMA_TX(rocker_port->port_number),
1308                                      ROCKER_DMA_TX_DEFAULT_SIZE,
1309                                      &rocker_port->tx_ring);
1310         if (err) {
1311                 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
1312                 return err;
1313         }
1314
1315         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
1316                                          PCI_DMA_TODEVICE,
1317                                          ROCKER_DMA_TX_DESC_SIZE);
1318         if (err) {
1319                 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
1320                 goto err_dma_tx_ring_bufs_alloc;
1321         }
1322
1323         err = rocker_dma_ring_create(rocker,
1324                                      ROCKER_DMA_RX(rocker_port->port_number),
1325                                      ROCKER_DMA_RX_DEFAULT_SIZE,
1326                                      &rocker_port->rx_ring);
1327         if (err) {
1328                 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
1329                 goto err_dma_rx_ring_create;
1330         }
1331
1332         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
1333                                          PCI_DMA_BIDIRECTIONAL,
1334                                          ROCKER_DMA_RX_DESC_SIZE);
1335         if (err) {
1336                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
1337                 goto err_dma_rx_ring_bufs_alloc;
1338         }
1339
1340         err = rocker_dma_rx_ring_skbs_alloc(rocker_port);
1341         if (err) {
1342                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
1343                 goto err_dma_rx_ring_skbs_alloc;
1344         }
1345         rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
1346
1347         return 0;
1348
1349 err_dma_rx_ring_skbs_alloc:
1350         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1351                                   PCI_DMA_BIDIRECTIONAL);
1352 err_dma_rx_ring_bufs_alloc:
1353         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1354 err_dma_rx_ring_create:
1355         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1356                                   PCI_DMA_TODEVICE);
1357 err_dma_tx_ring_bufs_alloc:
1358         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1359         return err;
1360 }
1361
1362 static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
1363 {
1364         struct rocker *rocker = rocker_port->rocker;
1365
1366         rocker_dma_rx_ring_skbs_free(rocker_port);
1367         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1368                                   PCI_DMA_BIDIRECTIONAL);
1369         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1370         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1371                                   PCI_DMA_TODEVICE);
1372         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1373 }
1374
1375 static void rocker_port_set_enable(const struct rocker_port *rocker_port,
1376                                    bool enable)
1377 {
1378         u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
1379
1380         if (enable)
1381                 val |= 1ULL << rocker_port->pport;
1382         else
1383                 val &= ~(1ULL << rocker_port->pport);
1384         rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
1385 }
1386
1387 /********************************
1388  * Interrupt handler and helpers
1389  ********************************/
1390
1391 static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
1392 {
1393         struct rocker *rocker = dev_id;
1394         const struct rocker_desc_info *desc_info;
1395         struct rocker_wait *wait;
1396         u32 credits = 0;
1397
1398         spin_lock(&rocker->cmd_ring_lock);
1399         while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
1400                 wait = rocker_desc_cookie_ptr_get(desc_info);
1401                 if (wait->nowait) {
1402                         rocker_desc_gen_clear(desc_info);
1403                         rocker_wait_destroy(NULL, wait);
1404                 } else {
1405                         rocker_wait_wake_up(wait);
1406                 }
1407                 credits++;
1408         }
1409         spin_unlock(&rocker->cmd_ring_lock);
1410         rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
1411
1412         return IRQ_HANDLED;
1413 }
1414
1415 static void rocker_port_link_up(const struct rocker_port *rocker_port)
1416 {
1417         netif_carrier_on(rocker_port->dev);
1418         netdev_info(rocker_port->dev, "Link is up\n");
1419 }
1420
1421 static void rocker_port_link_down(const struct rocker_port *rocker_port)
1422 {
1423         netif_carrier_off(rocker_port->dev);
1424         netdev_info(rocker_port->dev, "Link is down\n");
1425 }
1426
1427 static int rocker_event_link_change(const struct rocker *rocker,
1428                                     const struct rocker_tlv *info)
1429 {
1430         const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
1431         unsigned int port_number;
1432         bool link_up;
1433         struct rocker_port *rocker_port;
1434
1435         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
1436         if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] ||
1437             !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
1438                 return -EIO;
1439         port_number =
1440                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1;
1441         link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
1442
1443         if (port_number >= rocker->port_count)
1444                 return -EINVAL;
1445
1446         rocker_port = rocker->ports[port_number];
1447         if (netif_carrier_ok(rocker_port->dev) != link_up) {
1448                 if (link_up)
1449                         rocker_port_link_up(rocker_port);
1450                 else
1451                         rocker_port_link_down(rocker_port);
1452         }
1453
1454         return 0;
1455 }
1456
1457 static int rocker_port_fdb(struct rocker_port *rocker_port,
1458                            struct switchdev_trans *trans,
1459                            const unsigned char *addr,
1460                            __be16 vlan_id, int flags);
1461
1462 static int rocker_event_mac_vlan_seen(const struct rocker *rocker,
1463                                       const struct rocker_tlv *info)
1464 {
1465         const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
1466         unsigned int port_number;
1467         struct rocker_port *rocker_port;
1468         const unsigned char *addr;
1469         int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_LEARNED;
1470         __be16 vlan_id;
1471
1472         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
1473         if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] ||
1474             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
1475             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
1476                 return -EIO;
1477         port_number =
1478                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1;
1479         addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
1480         vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
1481
1482         if (port_number >= rocker->port_count)
1483                 return -EINVAL;
1484
1485         rocker_port = rocker->ports[port_number];
1486
1487         if (rocker_port->stp_state != BR_STATE_LEARNING &&
1488             rocker_port->stp_state != BR_STATE_FORWARDING)
1489                 return 0;
1490
1491         return rocker_port_fdb(rocker_port, NULL, addr, vlan_id, flags);
1492 }
1493
1494 static int rocker_event_process(const struct rocker *rocker,
1495                                 const struct rocker_desc_info *desc_info)
1496 {
1497         const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
1498         const struct rocker_tlv *info;
1499         u16 type;
1500
1501         rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
1502         if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
1503             !attrs[ROCKER_TLV_EVENT_INFO])
1504                 return -EIO;
1505
1506         type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
1507         info = attrs[ROCKER_TLV_EVENT_INFO];
1508
1509         switch (type) {
1510         case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
1511                 return rocker_event_link_change(rocker, info);
1512         case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
1513                 return rocker_event_mac_vlan_seen(rocker, info);
1514         }
1515
1516         return -EOPNOTSUPP;
1517 }
1518
1519 static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
1520 {
1521         struct rocker *rocker = dev_id;
1522         const struct pci_dev *pdev = rocker->pdev;
1523         const struct rocker_desc_info *desc_info;
1524         u32 credits = 0;
1525         int err;
1526
1527         while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1528                 err = rocker_desc_err(desc_info);
1529                 if (err) {
1530                         dev_err(&pdev->dev, "event desc received with err %d\n",
1531                                 err);
1532                 } else {
1533                         err = rocker_event_process(rocker, desc_info);
1534                         if (err)
1535                                 dev_err(&pdev->dev, "event processing failed with err %d\n",
1536                                         err);
1537                 }
1538                 rocker_desc_gen_clear(desc_info);
1539                 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1540                 credits++;
1541         }
1542         rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1543
1544         return IRQ_HANDLED;
1545 }
1546
1547 static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1548 {
1549         struct rocker_port *rocker_port = dev_id;
1550
1551         napi_schedule(&rocker_port->napi_tx);
1552         return IRQ_HANDLED;
1553 }
1554
1555 static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1556 {
1557         struct rocker_port *rocker_port = dev_id;
1558
1559         napi_schedule(&rocker_port->napi_rx);
1560         return IRQ_HANDLED;
1561 }
1562
1563 /********************
1564  * Command interface
1565  ********************/
1566
1567 typedef int (*rocker_cmd_prep_cb_t)(const struct rocker_port *rocker_port,
1568                                     struct rocker_desc_info *desc_info,
1569                                     void *priv);
1570
1571 typedef int (*rocker_cmd_proc_cb_t)(const struct rocker_port *rocker_port,
1572                                     const struct rocker_desc_info *desc_info,
1573                                     void *priv);
1574
1575 static int rocker_cmd_exec(struct rocker_port *rocker_port,
1576                            struct switchdev_trans *trans, int flags,
1577                            rocker_cmd_prep_cb_t prepare, void *prepare_priv,
1578                            rocker_cmd_proc_cb_t process, void *process_priv)
1579 {
1580         struct rocker *rocker = rocker_port->rocker;
1581         struct rocker_desc_info *desc_info;
1582         struct rocker_wait *wait;
1583         bool nowait = !!(flags & ROCKER_OP_FLAG_NOWAIT);
1584         unsigned long lock_flags;
1585         int err;
1586
1587         wait = rocker_wait_create(rocker_port, trans, flags);
1588         if (!wait)
1589                 return -ENOMEM;
1590         wait->nowait = nowait;
1591
1592         spin_lock_irqsave(&rocker->cmd_ring_lock, lock_flags);
1593
1594         desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1595         if (!desc_info) {
1596                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1597                 err = -EAGAIN;
1598                 goto out;
1599         }
1600
1601         err = prepare(rocker_port, desc_info, prepare_priv);
1602         if (err) {
1603                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1604                 goto out;
1605         }
1606
1607         rocker_desc_cookie_ptr_set(desc_info, wait);
1608
1609         if (!switchdev_trans_ph_prepare(trans))
1610                 rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1611
1612         spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1613
1614         if (nowait)
1615                 return 0;
1616
1617         if (!switchdev_trans_ph_prepare(trans))
1618                 if (!rocker_wait_event_timeout(wait, HZ / 10))
1619                         return -EIO;
1620
1621         err = rocker_desc_err(desc_info);
1622         if (err)
1623                 return err;
1624
1625         if (process)
1626                 err = process(rocker_port, desc_info, process_priv);
1627
1628         rocker_desc_gen_clear(desc_info);
1629 out:
1630         rocker_wait_destroy(trans, wait);
1631         return err;
1632 }
1633
1634 static int
1635 rocker_cmd_get_port_settings_prep(const struct rocker_port *rocker_port,
1636                                   struct rocker_desc_info *desc_info,
1637                                   void *priv)
1638 {
1639         struct rocker_tlv *cmd_info;
1640
1641         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1642                                ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1643                 return -EMSGSIZE;
1644         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1645         if (!cmd_info)
1646                 return -EMSGSIZE;
1647         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1648                                rocker_port->pport))
1649                 return -EMSGSIZE;
1650         rocker_tlv_nest_end(desc_info, cmd_info);
1651         return 0;
1652 }
1653
1654 static int
1655 rocker_cmd_get_port_settings_ethtool_proc(const struct rocker_port *rocker_port,
1656                                           const struct rocker_desc_info *desc_info,
1657                                           void *priv)
1658 {
1659         struct ethtool_cmd *ecmd = priv;
1660         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1661         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1662         u32 speed;
1663         u8 duplex;
1664         u8 autoneg;
1665
1666         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1667         if (!attrs[ROCKER_TLV_CMD_INFO])
1668                 return -EIO;
1669
1670         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1671                                 attrs[ROCKER_TLV_CMD_INFO]);
1672         if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1673             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1674             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1675                 return -EIO;
1676
1677         speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1678         duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1679         autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1680
1681         ecmd->transceiver = XCVR_INTERNAL;
1682         ecmd->supported = SUPPORTED_TP;
1683         ecmd->phy_address = 0xff;
1684         ecmd->port = PORT_TP;
1685         ethtool_cmd_speed_set(ecmd, speed);
1686         ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1687         ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1688
1689         return 0;
1690 }
1691
1692 static int
1693 rocker_cmd_get_port_settings_macaddr_proc(const struct rocker_port *rocker_port,
1694                                           const struct rocker_desc_info *desc_info,
1695                                           void *priv)
1696 {
1697         unsigned char *macaddr = priv;
1698         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1699         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1700         const struct rocker_tlv *attr;
1701
1702         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1703         if (!attrs[ROCKER_TLV_CMD_INFO])
1704                 return -EIO;
1705
1706         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1707                                 attrs[ROCKER_TLV_CMD_INFO]);
1708         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1709         if (!attr)
1710                 return -EIO;
1711
1712         if (rocker_tlv_len(attr) != ETH_ALEN)
1713                 return -EINVAL;
1714
1715         ether_addr_copy(macaddr, rocker_tlv_data(attr));
1716         return 0;
1717 }
1718
1719 struct port_name {
1720         char *buf;
1721         size_t len;
1722 };
1723
1724 static int
1725 rocker_cmd_get_port_settings_phys_name_proc(const struct rocker_port *rocker_port,
1726                                             const struct rocker_desc_info *desc_info,
1727                                             void *priv)
1728 {
1729         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1730         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1731         struct port_name *name = priv;
1732         const struct rocker_tlv *attr;
1733         size_t i, j, len;
1734         const char *str;
1735
1736         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1737         if (!attrs[ROCKER_TLV_CMD_INFO])
1738                 return -EIO;
1739
1740         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1741                                 attrs[ROCKER_TLV_CMD_INFO]);
1742         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME];
1743         if (!attr)
1744                 return -EIO;
1745
1746         len = min_t(size_t, rocker_tlv_len(attr), name->len);
1747         str = rocker_tlv_data(attr);
1748
1749         /* make sure name only contains alphanumeric characters */
1750         for (i = j = 0; i < len; ++i) {
1751                 if (isalnum(str[i])) {
1752                         name->buf[j] = str[i];
1753                         j++;
1754                 }
1755         }
1756
1757         if (j == 0)
1758                 return -EIO;
1759
1760         name->buf[j] = '\0';
1761
1762         return 0;
1763 }
1764
1765 static int
1766 rocker_cmd_set_port_settings_ethtool_prep(const struct rocker_port *rocker_port,
1767                                           struct rocker_desc_info *desc_info,
1768                                           void *priv)
1769 {
1770         struct ethtool_cmd *ecmd = priv;
1771         struct rocker_tlv *cmd_info;
1772
1773         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1774                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1775                 return -EMSGSIZE;
1776         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1777         if (!cmd_info)
1778                 return -EMSGSIZE;
1779         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1780                                rocker_port->pport))
1781                 return -EMSGSIZE;
1782         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1783                                ethtool_cmd_speed(ecmd)))
1784                 return -EMSGSIZE;
1785         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1786                               ecmd->duplex))
1787                 return -EMSGSIZE;
1788         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1789                               ecmd->autoneg))
1790                 return -EMSGSIZE;
1791         rocker_tlv_nest_end(desc_info, cmd_info);
1792         return 0;
1793 }
1794
1795 static int
1796 rocker_cmd_set_port_settings_macaddr_prep(const struct rocker_port *rocker_port,
1797                                           struct rocker_desc_info *desc_info,
1798                                           void *priv)
1799 {
1800         const unsigned char *macaddr = priv;
1801         struct rocker_tlv *cmd_info;
1802
1803         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1804                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1805                 return -EMSGSIZE;
1806         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1807         if (!cmd_info)
1808                 return -EMSGSIZE;
1809         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1810                                rocker_port->pport))
1811                 return -EMSGSIZE;
1812         if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1813                            ETH_ALEN, macaddr))
1814                 return -EMSGSIZE;
1815         rocker_tlv_nest_end(desc_info, cmd_info);
1816         return 0;
1817 }
1818
1819 static int
1820 rocker_cmd_set_port_settings_mtu_prep(const struct rocker_port *rocker_port,
1821                                       struct rocker_desc_info *desc_info,
1822                                       void *priv)
1823 {
1824         int mtu = *(int *)priv;
1825         struct rocker_tlv *cmd_info;
1826
1827         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1828                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1829                 return -EMSGSIZE;
1830         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1831         if (!cmd_info)
1832                 return -EMSGSIZE;
1833         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1834                                rocker_port->pport))
1835                 return -EMSGSIZE;
1836         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MTU,
1837                                mtu))
1838                 return -EMSGSIZE;
1839         rocker_tlv_nest_end(desc_info, cmd_info);
1840         return 0;
1841 }
1842
1843 static int
1844 rocker_cmd_set_port_learning_prep(const struct rocker_port *rocker_port,
1845                                   struct rocker_desc_info *desc_info,
1846                                   void *priv)
1847 {
1848         struct rocker_tlv *cmd_info;
1849
1850         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1851                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1852                 return -EMSGSIZE;
1853         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1854         if (!cmd_info)
1855                 return -EMSGSIZE;
1856         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1857                                rocker_port->pport))
1858                 return -EMSGSIZE;
1859         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1860                               !!(rocker_port->brport_flags & BR_LEARNING)))
1861                 return -EMSGSIZE;
1862         rocker_tlv_nest_end(desc_info, cmd_info);
1863         return 0;
1864 }
1865
1866 static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1867                                                 struct ethtool_cmd *ecmd)
1868 {
1869         return rocker_cmd_exec(rocker_port, NULL, 0,
1870                                rocker_cmd_get_port_settings_prep, NULL,
1871                                rocker_cmd_get_port_settings_ethtool_proc,
1872                                ecmd);
1873 }
1874
1875 static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1876                                                 unsigned char *macaddr)
1877 {
1878         return rocker_cmd_exec(rocker_port, NULL, 0,
1879                                rocker_cmd_get_port_settings_prep, NULL,
1880                                rocker_cmd_get_port_settings_macaddr_proc,
1881                                macaddr);
1882 }
1883
1884 static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1885                                                 struct ethtool_cmd *ecmd)
1886 {
1887         return rocker_cmd_exec(rocker_port, NULL, 0,
1888                                rocker_cmd_set_port_settings_ethtool_prep,
1889                                ecmd, NULL, NULL);
1890 }
1891
1892 static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1893                                                 unsigned char *macaddr)
1894 {
1895         return rocker_cmd_exec(rocker_port, NULL, 0,
1896                                rocker_cmd_set_port_settings_macaddr_prep,
1897                                macaddr, NULL, NULL);
1898 }
1899
1900 static int rocker_cmd_set_port_settings_mtu(struct rocker_port *rocker_port,
1901                                             int mtu)
1902 {
1903         return rocker_cmd_exec(rocker_port, NULL, 0,
1904                                rocker_cmd_set_port_settings_mtu_prep,
1905                                &mtu, NULL, NULL);
1906 }
1907
1908 static int rocker_port_set_learning(struct rocker_port *rocker_port,
1909                                     struct switchdev_trans *trans)
1910 {
1911         return rocker_cmd_exec(rocker_port, trans, 0,
1912                                rocker_cmd_set_port_learning_prep,
1913                                NULL, NULL, NULL);
1914 }
1915
1916 static int
1917 rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
1918                                 const struct rocker_flow_tbl_entry *entry)
1919 {
1920         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1921                                entry->key.ig_port.in_pport))
1922                 return -EMSGSIZE;
1923         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1924                                entry->key.ig_port.in_pport_mask))
1925                 return -EMSGSIZE;
1926         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1927                                entry->key.ig_port.goto_tbl))
1928                 return -EMSGSIZE;
1929
1930         return 0;
1931 }
1932
1933 static int
1934 rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
1935                              const struct rocker_flow_tbl_entry *entry)
1936 {
1937         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1938                                entry->key.vlan.in_pport))
1939                 return -EMSGSIZE;
1940         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1941                                 entry->key.vlan.vlan_id))
1942                 return -EMSGSIZE;
1943         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1944                                 entry->key.vlan.vlan_id_mask))
1945                 return -EMSGSIZE;
1946         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1947                                entry->key.vlan.goto_tbl))
1948                 return -EMSGSIZE;
1949         if (entry->key.vlan.untagged &&
1950             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
1951                                 entry->key.vlan.new_vlan_id))
1952                 return -EMSGSIZE;
1953
1954         return 0;
1955 }
1956
1957 static int
1958 rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
1959                                  const struct rocker_flow_tbl_entry *entry)
1960 {
1961         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1962                                entry->key.term_mac.in_pport))
1963                 return -EMSGSIZE;
1964         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1965                                entry->key.term_mac.in_pport_mask))
1966                 return -EMSGSIZE;
1967         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1968                                 entry->key.term_mac.eth_type))
1969                 return -EMSGSIZE;
1970         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1971                            ETH_ALEN, entry->key.term_mac.eth_dst))
1972                 return -EMSGSIZE;
1973         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1974                            ETH_ALEN, entry->key.term_mac.eth_dst_mask))
1975                 return -EMSGSIZE;
1976         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1977                                 entry->key.term_mac.vlan_id))
1978                 return -EMSGSIZE;
1979         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1980                                 entry->key.term_mac.vlan_id_mask))
1981                 return -EMSGSIZE;
1982         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1983                                entry->key.term_mac.goto_tbl))
1984                 return -EMSGSIZE;
1985         if (entry->key.term_mac.copy_to_cpu &&
1986             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1987                               entry->key.term_mac.copy_to_cpu))
1988                 return -EMSGSIZE;
1989
1990         return 0;
1991 }
1992
1993 static int
1994 rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
1995                                       const struct rocker_flow_tbl_entry *entry)
1996 {
1997         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1998                                 entry->key.ucast_routing.eth_type))
1999                 return -EMSGSIZE;
2000         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
2001                                 entry->key.ucast_routing.dst4))
2002                 return -EMSGSIZE;
2003         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
2004                                 entry->key.ucast_routing.dst4_mask))
2005                 return -EMSGSIZE;
2006         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2007                                entry->key.ucast_routing.goto_tbl))
2008                 return -EMSGSIZE;
2009         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2010                                entry->key.ucast_routing.group_id))
2011                 return -EMSGSIZE;
2012
2013         return 0;
2014 }
2015
2016 static int
2017 rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
2018                                const struct rocker_flow_tbl_entry *entry)
2019 {
2020         if (entry->key.bridge.has_eth_dst &&
2021             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2022                            ETH_ALEN, entry->key.bridge.eth_dst))
2023                 return -EMSGSIZE;
2024         if (entry->key.bridge.has_eth_dst_mask &&
2025             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2026                            ETH_ALEN, entry->key.bridge.eth_dst_mask))
2027                 return -EMSGSIZE;
2028         if (entry->key.bridge.vlan_id &&
2029             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2030                                 entry->key.bridge.vlan_id))
2031                 return -EMSGSIZE;
2032         if (entry->key.bridge.tunnel_id &&
2033             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
2034                                entry->key.bridge.tunnel_id))
2035                 return -EMSGSIZE;
2036         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2037                                entry->key.bridge.goto_tbl))
2038                 return -EMSGSIZE;
2039         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2040                                entry->key.bridge.group_id))
2041                 return -EMSGSIZE;
2042         if (entry->key.bridge.copy_to_cpu &&
2043             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
2044                               entry->key.bridge.copy_to_cpu))
2045                 return -EMSGSIZE;
2046
2047         return 0;
2048 }
2049
2050 static int
2051 rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
2052                             const struct rocker_flow_tbl_entry *entry)
2053 {
2054         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
2055                                entry->key.acl.in_pport))
2056                 return -EMSGSIZE;
2057         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
2058                                entry->key.acl.in_pport_mask))
2059                 return -EMSGSIZE;
2060         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2061                            ETH_ALEN, entry->key.acl.eth_src))
2062                 return -EMSGSIZE;
2063         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
2064                            ETH_ALEN, entry->key.acl.eth_src_mask))
2065                 return -EMSGSIZE;
2066         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2067                            ETH_ALEN, entry->key.acl.eth_dst))
2068                 return -EMSGSIZE;
2069         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2070                            ETH_ALEN, entry->key.acl.eth_dst_mask))
2071                 return -EMSGSIZE;
2072         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
2073                                 entry->key.acl.eth_type))
2074                 return -EMSGSIZE;
2075         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2076                                 entry->key.acl.vlan_id))
2077                 return -EMSGSIZE;
2078         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
2079                                 entry->key.acl.vlan_id_mask))
2080                 return -EMSGSIZE;
2081
2082         switch (ntohs(entry->key.acl.eth_type)) {
2083         case ETH_P_IP:
2084         case ETH_P_IPV6:
2085                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
2086                                       entry->key.acl.ip_proto))
2087                         return -EMSGSIZE;
2088                 if (rocker_tlv_put_u8(desc_info,
2089                                       ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
2090                                       entry->key.acl.ip_proto_mask))
2091                         return -EMSGSIZE;
2092                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
2093                                       entry->key.acl.ip_tos & 0x3f))
2094                         return -EMSGSIZE;
2095                 if (rocker_tlv_put_u8(desc_info,
2096                                       ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
2097                                       entry->key.acl.ip_tos_mask & 0x3f))
2098                         return -EMSGSIZE;
2099                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
2100                                       (entry->key.acl.ip_tos & 0xc0) >> 6))
2101                         return -EMSGSIZE;
2102                 if (rocker_tlv_put_u8(desc_info,
2103                                       ROCKER_TLV_OF_DPA_IP_ECN_MASK,
2104                                       (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
2105                         return -EMSGSIZE;
2106                 break;
2107         }
2108
2109         if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
2110             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2111                                entry->key.acl.group_id))
2112                 return -EMSGSIZE;
2113
2114         return 0;
2115 }
2116
2117 static int rocker_cmd_flow_tbl_add(const struct rocker_port *rocker_port,
2118                                    struct rocker_desc_info *desc_info,
2119                                    void *priv)
2120 {
2121         const struct rocker_flow_tbl_entry *entry = priv;
2122         struct rocker_tlv *cmd_info;
2123         int err = 0;
2124
2125         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2126                 return -EMSGSIZE;
2127         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2128         if (!cmd_info)
2129                 return -EMSGSIZE;
2130         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
2131                                entry->key.tbl_id))
2132                 return -EMSGSIZE;
2133         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
2134                                entry->key.priority))
2135                 return -EMSGSIZE;
2136         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
2137                 return -EMSGSIZE;
2138         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2139                                entry->cookie))
2140                 return -EMSGSIZE;
2141
2142         switch (entry->key.tbl_id) {
2143         case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
2144                 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
2145                 break;
2146         case ROCKER_OF_DPA_TABLE_ID_VLAN:
2147                 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
2148                 break;
2149         case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
2150                 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
2151                 break;
2152         case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
2153                 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
2154                 break;
2155         case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
2156                 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
2157                 break;
2158         case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
2159                 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
2160                 break;
2161         default:
2162                 err = -ENOTSUPP;
2163                 break;
2164         }
2165
2166         if (err)
2167                 return err;
2168
2169         rocker_tlv_nest_end(desc_info, cmd_info);
2170
2171         return 0;
2172 }
2173
2174 static int rocker_cmd_flow_tbl_del(const struct rocker_port *rocker_port,
2175                                    struct rocker_desc_info *desc_info,
2176                                    void *priv)
2177 {
2178         const struct rocker_flow_tbl_entry *entry = priv;
2179         struct rocker_tlv *cmd_info;
2180
2181         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2182                 return -EMSGSIZE;
2183         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2184         if (!cmd_info)
2185                 return -EMSGSIZE;
2186         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2187                                entry->cookie))
2188                 return -EMSGSIZE;
2189         rocker_tlv_nest_end(desc_info, cmd_info);
2190
2191         return 0;
2192 }
2193
2194 static int
2195 rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
2196                                       struct rocker_group_tbl_entry *entry)
2197 {
2198         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT,
2199                                ROCKER_GROUP_PORT_GET(entry->group_id)))
2200                 return -EMSGSIZE;
2201         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
2202                               entry->l2_interface.pop_vlan))
2203                 return -EMSGSIZE;
2204
2205         return 0;
2206 }
2207
2208 static int
2209 rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
2210                                     const struct rocker_group_tbl_entry *entry)
2211 {
2212         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2213                                entry->l2_rewrite.group_id))
2214                 return -EMSGSIZE;
2215         if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
2216             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2217                            ETH_ALEN, entry->l2_rewrite.eth_src))
2218                 return -EMSGSIZE;
2219         if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
2220             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2221                            ETH_ALEN, entry->l2_rewrite.eth_dst))
2222                 return -EMSGSIZE;
2223         if (entry->l2_rewrite.vlan_id &&
2224             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2225                                 entry->l2_rewrite.vlan_id))
2226                 return -EMSGSIZE;
2227
2228         return 0;
2229 }
2230
2231 static int
2232 rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
2233                                    const struct rocker_group_tbl_entry *entry)
2234 {
2235         int i;
2236         struct rocker_tlv *group_ids;
2237
2238         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
2239                                entry->group_count))
2240                 return -EMSGSIZE;
2241
2242         group_ids = rocker_tlv_nest_start(desc_info,
2243                                           ROCKER_TLV_OF_DPA_GROUP_IDS);
2244         if (!group_ids)
2245                 return -EMSGSIZE;
2246
2247         for (i = 0; i < entry->group_count; i++)
2248                 /* Note TLV array is 1-based */
2249                 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
2250                         return -EMSGSIZE;
2251
2252         rocker_tlv_nest_end(desc_info, group_ids);
2253
2254         return 0;
2255 }
2256
2257 static int
2258 rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
2259                                     const struct rocker_group_tbl_entry *entry)
2260 {
2261         if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
2262             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2263                            ETH_ALEN, entry->l3_unicast.eth_src))
2264                 return -EMSGSIZE;
2265         if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
2266             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2267                            ETH_ALEN, entry->l3_unicast.eth_dst))
2268                 return -EMSGSIZE;
2269         if (entry->l3_unicast.vlan_id &&
2270             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2271                                 entry->l3_unicast.vlan_id))
2272                 return -EMSGSIZE;
2273         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
2274                               entry->l3_unicast.ttl_check))
2275                 return -EMSGSIZE;
2276         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2277                                entry->l3_unicast.group_id))
2278                 return -EMSGSIZE;
2279
2280         return 0;
2281 }
2282
2283 static int rocker_cmd_group_tbl_add(const struct rocker_port *rocker_port,
2284                                     struct rocker_desc_info *desc_info,
2285                                     void *priv)
2286 {
2287         struct rocker_group_tbl_entry *entry = priv;
2288         struct rocker_tlv *cmd_info;
2289         int err = 0;
2290
2291         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2292                 return -EMSGSIZE;
2293         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2294         if (!cmd_info)
2295                 return -EMSGSIZE;
2296
2297         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2298                                entry->group_id))
2299                 return -EMSGSIZE;
2300
2301         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2302         case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
2303                 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
2304                 break;
2305         case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
2306                 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
2307                 break;
2308         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2309         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2310                 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
2311                 break;
2312         case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
2313                 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
2314                 break;
2315         default:
2316                 err = -ENOTSUPP;
2317                 break;
2318         }
2319
2320         if (err)
2321                 return err;
2322
2323         rocker_tlv_nest_end(desc_info, cmd_info);
2324
2325         return 0;
2326 }
2327
2328 static int rocker_cmd_group_tbl_del(const struct rocker_port *rocker_port,
2329                                     struct rocker_desc_info *desc_info,
2330                                     void *priv)
2331 {
2332         const struct rocker_group_tbl_entry *entry = priv;
2333         struct rocker_tlv *cmd_info;
2334
2335         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2336                 return -EMSGSIZE;
2337         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2338         if (!cmd_info)
2339                 return -EMSGSIZE;
2340         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2341                                entry->group_id))
2342                 return -EMSGSIZE;
2343         rocker_tlv_nest_end(desc_info, cmd_info);
2344
2345         return 0;
2346 }
2347
2348 /***************************************************
2349  * Flow, group, FDB, internal VLAN and neigh tables
2350  ***************************************************/
2351
2352 static int rocker_init_tbls(struct rocker *rocker)
2353 {
2354         hash_init(rocker->flow_tbl);
2355         spin_lock_init(&rocker->flow_tbl_lock);
2356
2357         hash_init(rocker->group_tbl);
2358         spin_lock_init(&rocker->group_tbl_lock);
2359
2360         hash_init(rocker->fdb_tbl);
2361         spin_lock_init(&rocker->fdb_tbl_lock);
2362
2363         hash_init(rocker->internal_vlan_tbl);
2364         spin_lock_init(&rocker->internal_vlan_tbl_lock);
2365
2366         hash_init(rocker->neigh_tbl);
2367         spin_lock_init(&rocker->neigh_tbl_lock);
2368
2369         return 0;
2370 }
2371
2372 static void rocker_free_tbls(struct rocker *rocker)
2373 {
2374         unsigned long flags;
2375         struct rocker_flow_tbl_entry *flow_entry;
2376         struct rocker_group_tbl_entry *group_entry;
2377         struct rocker_fdb_tbl_entry *fdb_entry;
2378         struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
2379         struct rocker_neigh_tbl_entry *neigh_entry;
2380         struct hlist_node *tmp;
2381         int bkt;
2382
2383         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2384         hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
2385                 hash_del(&flow_entry->entry);
2386         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2387
2388         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2389         hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
2390                 hash_del(&group_entry->entry);
2391         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2392
2393         spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
2394         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
2395                 hash_del(&fdb_entry->entry);
2396         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
2397
2398         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
2399         hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
2400                            tmp, internal_vlan_entry, entry)
2401                 hash_del(&internal_vlan_entry->entry);
2402         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
2403
2404         spin_lock_irqsave(&rocker->neigh_tbl_lock, flags);
2405         hash_for_each_safe(rocker->neigh_tbl, bkt, tmp, neigh_entry, entry)
2406                 hash_del(&neigh_entry->entry);
2407         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, flags);
2408 }
2409
2410 static struct rocker_flow_tbl_entry *
2411 rocker_flow_tbl_find(const struct rocker *rocker,
2412                      const struct rocker_flow_tbl_entry *match)
2413 {
2414         struct rocker_flow_tbl_entry *found;
2415         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2416
2417         hash_for_each_possible(rocker->flow_tbl, found,
2418                                entry, match->key_crc32) {
2419                 if (memcmp(&found->key, &match->key, key_len) == 0)
2420                         return found;
2421         }
2422
2423         return NULL;
2424 }
2425
2426 static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
2427                                struct switchdev_trans *trans, int flags,
2428                                struct rocker_flow_tbl_entry *match)
2429 {
2430         struct rocker *rocker = rocker_port->rocker;
2431         struct rocker_flow_tbl_entry *found;
2432         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2433         unsigned long lock_flags;
2434
2435         match->key_crc32 = crc32(~0, &match->key, key_len);
2436
2437         spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags);
2438
2439         found = rocker_flow_tbl_find(rocker, match);
2440
2441         if (found) {
2442                 match->cookie = found->cookie;
2443                 if (!switchdev_trans_ph_prepare(trans))
2444                         hash_del(&found->entry);
2445                 rocker_port_kfree(trans, found);
2446                 found = match;
2447                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD;
2448         } else {
2449                 found = match;
2450                 found->cookie = rocker->flow_tbl_next_cookie++;
2451                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD;
2452         }
2453
2454         if (!switchdev_trans_ph_prepare(trans))
2455                 hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
2456
2457         spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags);
2458
2459         return rocker_cmd_exec(rocker_port, trans, flags,
2460                                rocker_cmd_flow_tbl_add, found, NULL, NULL);
2461 }
2462
2463 static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
2464                                struct switchdev_trans *trans, int flags,
2465                                struct rocker_flow_tbl_entry *match)
2466 {
2467         struct rocker *rocker = rocker_port->rocker;
2468         struct rocker_flow_tbl_entry *found;
2469         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2470         unsigned long lock_flags;
2471         int err = 0;
2472
2473         match->key_crc32 = crc32(~0, &match->key, key_len);
2474
2475         spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags);
2476
2477         found = rocker_flow_tbl_find(rocker, match);
2478
2479         if (found) {
2480                 if (!switchdev_trans_ph_prepare(trans))
2481                         hash_del(&found->entry);
2482                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL;
2483         }
2484
2485         spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags);
2486
2487         rocker_port_kfree(trans, match);
2488
2489         if (found) {
2490                 err = rocker_cmd_exec(rocker_port, trans, flags,
2491                                       rocker_cmd_flow_tbl_del,
2492                                       found, NULL, NULL);
2493                 rocker_port_kfree(trans, found);
2494         }
2495
2496         return err;
2497 }
2498
2499 static int rocker_flow_tbl_do(struct rocker_port *rocker_port,
2500                               struct switchdev_trans *trans, int flags,
2501                               struct rocker_flow_tbl_entry *entry)
2502 {
2503         if (flags & ROCKER_OP_FLAG_REMOVE)
2504                 return rocker_flow_tbl_del(rocker_port, trans, flags, entry);
2505         else
2506                 return rocker_flow_tbl_add(rocker_port, trans, flags, entry);
2507 }
2508
2509 static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port,
2510                                    struct switchdev_trans *trans, int flags,
2511                                    u32 in_pport, u32 in_pport_mask,
2512                                    enum rocker_of_dpa_table_id goto_tbl)
2513 {
2514         struct rocker_flow_tbl_entry *entry;
2515
2516         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2517         if (!entry)
2518                 return -ENOMEM;
2519
2520         entry->key.priority = ROCKER_PRIORITY_IG_PORT;
2521         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
2522         entry->key.ig_port.in_pport = in_pport;
2523         entry->key.ig_port.in_pport_mask = in_pport_mask;
2524         entry->key.ig_port.goto_tbl = goto_tbl;
2525
2526         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2527 }
2528
2529 static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port,
2530                                 struct switchdev_trans *trans, int flags,
2531                                 u32 in_pport, __be16 vlan_id,
2532                                 __be16 vlan_id_mask,
2533                                 enum rocker_of_dpa_table_id goto_tbl,
2534                                 bool untagged, __be16 new_vlan_id)
2535 {
2536         struct rocker_flow_tbl_entry *entry;
2537
2538         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2539         if (!entry)
2540                 return -ENOMEM;
2541
2542         entry->key.priority = ROCKER_PRIORITY_VLAN;
2543         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
2544         entry->key.vlan.in_pport = in_pport;
2545         entry->key.vlan.vlan_id = vlan_id;
2546         entry->key.vlan.vlan_id_mask = vlan_id_mask;
2547         entry->key.vlan.goto_tbl = goto_tbl;
2548
2549         entry->key.vlan.untagged = untagged;
2550         entry->key.vlan.new_vlan_id = new_vlan_id;
2551
2552         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2553 }
2554
2555 static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port,
2556                                     struct switchdev_trans *trans,
2557                                     u32 in_pport, u32 in_pport_mask,
2558                                     __be16 eth_type, const u8 *eth_dst,
2559                                     const u8 *eth_dst_mask, __be16 vlan_id,
2560                                     __be16 vlan_id_mask, bool copy_to_cpu,
2561                                     int flags)
2562 {
2563         struct rocker_flow_tbl_entry *entry;
2564
2565         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2566         if (!entry)
2567                 return -ENOMEM;
2568
2569         if (is_multicast_ether_addr(eth_dst)) {
2570                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST;
2571                 entry->key.term_mac.goto_tbl =
2572                          ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
2573         } else {
2574                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST;
2575                 entry->key.term_mac.goto_tbl =
2576                          ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2577         }
2578
2579         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2580         entry->key.term_mac.in_pport = in_pport;
2581         entry->key.term_mac.in_pport_mask = in_pport_mask;
2582         entry->key.term_mac.eth_type = eth_type;
2583         ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
2584         ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
2585         entry->key.term_mac.vlan_id = vlan_id;
2586         entry->key.term_mac.vlan_id_mask = vlan_id_mask;
2587         entry->key.term_mac.copy_to_cpu = copy_to_cpu;
2588
2589         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2590 }
2591
2592 static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port,
2593                                   struct switchdev_trans *trans, int flags,
2594                                   const u8 *eth_dst, const u8 *eth_dst_mask,
2595                                   __be16 vlan_id, u32 tunnel_id,
2596                                   enum rocker_of_dpa_table_id goto_tbl,
2597                                   u32 group_id, bool copy_to_cpu)
2598 {
2599         struct rocker_flow_tbl_entry *entry;
2600         u32 priority;
2601         bool vlan_bridging = !!vlan_id;
2602         bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
2603         bool wild = false;
2604
2605         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2606         if (!entry)
2607                 return -ENOMEM;
2608
2609         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
2610
2611         if (eth_dst) {
2612                 entry->key.bridge.has_eth_dst = 1;
2613                 ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
2614         }
2615         if (eth_dst_mask) {
2616                 entry->key.bridge.has_eth_dst_mask = 1;
2617                 ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
2618                 if (!ether_addr_equal(eth_dst_mask, ff_mac))
2619                         wild = true;
2620         }
2621
2622         priority = ROCKER_PRIORITY_UNKNOWN;
2623         if (vlan_bridging && dflt && wild)
2624                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
2625         else if (vlan_bridging && dflt && !wild)
2626                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
2627         else if (vlan_bridging && !dflt)
2628                 priority = ROCKER_PRIORITY_BRIDGING_VLAN;
2629         else if (!vlan_bridging && dflt && wild)
2630                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
2631         else if (!vlan_bridging && dflt && !wild)
2632                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
2633         else if (!vlan_bridging && !dflt)
2634                 priority = ROCKER_PRIORITY_BRIDGING_TENANT;
2635
2636         entry->key.priority = priority;
2637         entry->key.bridge.vlan_id = vlan_id;
2638         entry->key.bridge.tunnel_id = tunnel_id;
2639         entry->key.bridge.goto_tbl = goto_tbl;
2640         entry->key.bridge.group_id = group_id;
2641         entry->key.bridge.copy_to_cpu = copy_to_cpu;
2642
2643         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2644 }
2645
2646 static int rocker_flow_tbl_ucast4_routing(struct rocker_port *rocker_port,
2647                                           struct switchdev_trans *trans,
2648                                           __be16 eth_type, __be32 dst,
2649                                           __be32 dst_mask, u32 priority,
2650                                           enum rocker_of_dpa_table_id goto_tbl,
2651                                           u32 group_id, int flags)
2652 {
2653         struct rocker_flow_tbl_entry *entry;
2654
2655         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2656         if (!entry)
2657                 return -ENOMEM;
2658
2659         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2660         entry->key.priority = priority;
2661         entry->key.ucast_routing.eth_type = eth_type;
2662         entry->key.ucast_routing.dst4 = dst;
2663         entry->key.ucast_routing.dst4_mask = dst_mask;
2664         entry->key.ucast_routing.goto_tbl = goto_tbl;
2665         entry->key.ucast_routing.group_id = group_id;
2666         entry->key_len = offsetof(struct rocker_flow_tbl_key,
2667                                   ucast_routing.group_id);
2668
2669         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2670 }
2671
2672 static int rocker_flow_tbl_acl(struct rocker_port *rocker_port,
2673                                struct switchdev_trans *trans, int flags,
2674                                u32 in_pport, u32 in_pport_mask,
2675                                const u8 *eth_src, const u8 *eth_src_mask,
2676                                const u8 *eth_dst, const u8 *eth_dst_mask,
2677                                __be16 eth_type, __be16 vlan_id,
2678                                __be16 vlan_id_mask, u8 ip_proto,
2679                                u8 ip_proto_mask, u8 ip_tos, u8 ip_tos_mask,
2680                                u32 group_id)
2681 {
2682         u32 priority;
2683         struct rocker_flow_tbl_entry *entry;
2684
2685         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2686         if (!entry)
2687                 return -ENOMEM;
2688
2689         priority = ROCKER_PRIORITY_ACL_NORMAL;
2690         if (eth_dst && eth_dst_mask) {
2691                 if (ether_addr_equal(eth_dst_mask, mcast_mac))
2692                         priority = ROCKER_PRIORITY_ACL_DFLT;
2693                 else if (is_link_local_ether_addr(eth_dst))
2694                         priority = ROCKER_PRIORITY_ACL_CTRL;
2695         }
2696
2697         entry->key.priority = priority;
2698         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2699         entry->key.acl.in_pport = in_pport;
2700         entry->key.acl.in_pport_mask = in_pport_mask;
2701
2702         if (eth_src)
2703                 ether_addr_copy(entry->key.acl.eth_src, eth_src);
2704         if (eth_src_mask)
2705                 ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
2706         if (eth_dst)
2707                 ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
2708         if (eth_dst_mask)
2709                 ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
2710
2711         entry->key.acl.eth_type = eth_type;
2712         entry->key.acl.vlan_id = vlan_id;
2713         entry->key.acl.vlan_id_mask = vlan_id_mask;
2714         entry->key.acl.ip_proto = ip_proto;
2715         entry->key.acl.ip_proto_mask = ip_proto_mask;
2716         entry->key.acl.ip_tos = ip_tos;
2717         entry->key.acl.ip_tos_mask = ip_tos_mask;
2718         entry->key.acl.group_id = group_id;
2719
2720         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2721 }
2722
2723 static struct rocker_group_tbl_entry *
2724 rocker_group_tbl_find(const struct rocker *rocker,
2725                       const struct rocker_group_tbl_entry *match)
2726 {
2727         struct rocker_group_tbl_entry *found;
2728
2729         hash_for_each_possible(rocker->group_tbl, found,
2730                                entry, match->group_id) {
2731                 if (found->group_id == match->group_id)
2732                         return found;
2733         }
2734
2735         return NULL;
2736 }
2737
2738 static void rocker_group_tbl_entry_free(struct switchdev_trans *trans,
2739                                         struct rocker_group_tbl_entry *entry)
2740 {
2741         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2742         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2743         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2744                 rocker_port_kfree(trans, entry->group_ids);
2745                 break;
2746         default:
2747                 break;
2748         }
2749         rocker_port_kfree(trans, entry);
2750 }
2751
2752 static int rocker_group_tbl_add(struct rocker_port *rocker_port,
2753                                 struct switchdev_trans *trans, int flags,
2754                                 struct rocker_group_tbl_entry *match)
2755 {
2756         struct rocker *rocker = rocker_port->rocker;
2757         struct rocker_group_tbl_entry *found;
2758         unsigned long lock_flags;
2759
2760         spin_lock_irqsave(&rocker->group_tbl_lock, lock_flags);
2761
2762         found = rocker_group_tbl_find(rocker, match);
2763
2764         if (found) {
2765                 if (!switchdev_trans_ph_prepare(trans))
2766                         hash_del(&found->entry);
2767                 rocker_group_tbl_entry_free(trans, found);
2768                 found = match;
2769                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
2770         } else {
2771                 found = match;
2772                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
2773         }
2774
2775         if (!switchdev_trans_ph_prepare(trans))
2776                 hash_add(rocker->group_tbl, &found->entry, found->group_id);
2777
2778         spin_unlock_irqrestore(&rocker->group_tbl_lock, lock_flags);
2779
2780         return rocker_cmd_exec(rocker_port, trans, flags,
2781                                rocker_cmd_group_tbl_add, found, NULL, NULL);
2782 }
2783
2784 static int rocker_group_tbl_del(struct rocker_port *rocker_port,
2785                                 struct switchdev_trans *trans, int flags,
2786                                 struct rocker_group_tbl_entry *match)
2787 {
2788         struct rocker *rocker = rocker_port->rocker;
2789         struct rocker_group_tbl_entry *found;
2790         unsigned long lock_flags;
2791         int err = 0;
2792
2793         spin_lock_irqsave(&rocker->group_tbl_lock, lock_flags);
2794
2795         found = rocker_group_tbl_find(rocker, match);
2796
2797         if (found) {
2798                 if (!switchdev_trans_ph_prepare(trans))
2799                         hash_del(&found->entry);
2800                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
2801         }
2802
2803         spin_unlock_irqrestore(&rocker->group_tbl_lock, lock_flags);
2804
2805         rocker_group_tbl_entry_free(trans, match);
2806
2807         if (found) {
2808                 err = rocker_cmd_exec(rocker_port, trans, flags,
2809                                       rocker_cmd_group_tbl_del,
2810                                       found, NULL, NULL);
2811                 rocker_group_tbl_entry_free(trans, found);
2812         }
2813
2814         return err;
2815 }
2816
2817 static int rocker_group_tbl_do(struct rocker_port *rocker_port,
2818                                struct switchdev_trans *trans, int flags,
2819                                struct rocker_group_tbl_entry *entry)
2820 {
2821         if (flags & ROCKER_OP_FLAG_REMOVE)
2822                 return rocker_group_tbl_del(rocker_port, trans, flags, entry);
2823         else
2824                 return rocker_group_tbl_add(rocker_port, trans, flags, entry);
2825 }
2826
2827 static int rocker_group_l2_interface(struct rocker_port *rocker_port,
2828                                      struct switchdev_trans *trans, int flags,
2829                                      __be16 vlan_id, u32 out_pport,
2830                                      int pop_vlan)
2831 {
2832         struct rocker_group_tbl_entry *entry;
2833
2834         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2835         if (!entry)
2836                 return -ENOMEM;
2837
2838         entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
2839         entry->l2_interface.pop_vlan = pop_vlan;
2840
2841         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2842 }
2843
2844 static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
2845                                    struct switchdev_trans *trans,
2846                                    int flags, u8 group_count,
2847                                    const u32 *group_ids, u32 group_id)
2848 {
2849         struct rocker_group_tbl_entry *entry;
2850
2851         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2852         if (!entry)
2853                 return -ENOMEM;
2854
2855         entry->group_id = group_id;
2856         entry->group_count = group_count;
2857
2858         entry->group_ids = rocker_port_kcalloc(rocker_port, trans, flags,
2859                                                group_count, sizeof(u32));
2860         if (!entry->group_ids) {
2861                 rocker_port_kfree(trans, entry);
2862                 return -ENOMEM;
2863         }
2864         memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
2865
2866         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2867 }
2868
2869 static int rocker_group_l2_flood(struct rocker_port *rocker_port,
2870                                  struct switchdev_trans *trans, int flags,
2871                                  __be16 vlan_id, u8 group_count,
2872                                  const u32 *group_ids, u32 group_id)
2873 {
2874         return rocker_group_l2_fan_out(rocker_port, trans, flags,
2875                                        group_count, group_ids,
2876                                        group_id);
2877 }
2878
2879 static int rocker_group_l3_unicast(struct rocker_port *rocker_port,
2880                                    struct switchdev_trans *trans, int flags,
2881                                    u32 index, const u8 *src_mac, const u8 *dst_mac,
2882                                    __be16 vlan_id, bool ttl_check, u32 pport)
2883 {
2884         struct rocker_group_tbl_entry *entry;
2885
2886         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2887         if (!entry)
2888                 return -ENOMEM;
2889
2890         entry->group_id = ROCKER_GROUP_L3_UNICAST(index);
2891         if (src_mac)
2892                 ether_addr_copy(entry->l3_unicast.eth_src, src_mac);
2893         if (dst_mac)
2894                 ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac);
2895         entry->l3_unicast.vlan_id = vlan_id;
2896         entry->l3_unicast.ttl_check = ttl_check;
2897         entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport);
2898
2899         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2900 }
2901
2902 static struct rocker_neigh_tbl_entry *
2903 rocker_neigh_tbl_find(const struct rocker *rocker, __be32 ip_addr)
2904 {
2905         struct rocker_neigh_tbl_entry *found;
2906
2907         hash_for_each_possible(rocker->neigh_tbl, found,
2908                                entry, be32_to_cpu(ip_addr))
2909                 if (found->ip_addr == ip_addr)
2910                         return found;
2911
2912         return NULL;
2913 }
2914
2915 static void _rocker_neigh_add(struct rocker *rocker,
2916                               struct switchdev_trans *trans,
2917                               struct rocker_neigh_tbl_entry *entry)
2918 {
2919         if (!switchdev_trans_ph_commit(trans))
2920                 entry->index = rocker->neigh_tbl_next_index++;
2921         if (switchdev_trans_ph_prepare(trans))
2922                 return;
2923         entry->ref_count++;
2924         hash_add(rocker->neigh_tbl, &entry->entry,
2925                  be32_to_cpu(entry->ip_addr));
2926 }
2927
2928 static void _rocker_neigh_del(struct switchdev_trans *trans,
2929                               struct rocker_neigh_tbl_entry *entry)
2930 {
2931         if (switchdev_trans_ph_prepare(trans))
2932                 return;
2933         if (--entry->ref_count == 0) {
2934                 hash_del(&entry->entry);
2935                 rocker_port_kfree(trans, entry);
2936         }
2937 }
2938
2939 static void _rocker_neigh_update(struct rocker_neigh_tbl_entry *entry,
2940                                  struct switchdev_trans *trans,
2941                                  const u8 *eth_dst, bool ttl_check)
2942 {
2943         if (eth_dst) {
2944                 ether_addr_copy(entry->eth_dst, eth_dst);
2945                 entry->ttl_check = ttl_check;
2946         } else if (!switchdev_trans_ph_prepare(trans)) {
2947                 entry->ref_count++;
2948         }
2949 }
2950
2951 static int rocker_port_ipv4_neigh(struct rocker_port *rocker_port,
2952                                   struct switchdev_trans *trans,
2953                                   int flags, __be32 ip_addr, const u8 *eth_dst)
2954 {
2955         struct rocker *rocker = rocker_port->rocker;
2956         struct rocker_neigh_tbl_entry *entry;
2957         struct rocker_neigh_tbl_entry *found;
2958         unsigned long lock_flags;
2959         __be16 eth_type = htons(ETH_P_IP);
2960         enum rocker_of_dpa_table_id goto_tbl =
2961                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2962         u32 group_id;
2963         u32 priority = 0;
2964         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2965         bool updating;
2966         bool removing;
2967         int err = 0;
2968
2969         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2970         if (!entry)
2971                 return -ENOMEM;
2972
2973         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
2974
2975         found = rocker_neigh_tbl_find(rocker, ip_addr);
2976
2977         updating = found && adding;
2978         removing = found && !adding;
2979         adding = !found && adding;
2980
2981         if (adding) {
2982                 entry->ip_addr = ip_addr;
2983                 entry->dev = rocker_port->dev;
2984                 ether_addr_copy(entry->eth_dst, eth_dst);
2985                 entry->ttl_check = true;
2986                 _rocker_neigh_add(rocker, trans, entry);
2987         } else if (removing) {
2988                 memcpy(entry, found, sizeof(*entry));
2989                 _rocker_neigh_del(trans, found);
2990         } else if (updating) {
2991                 _rocker_neigh_update(found, trans, eth_dst, true);
2992                 memcpy(entry, found, sizeof(*entry));
2993         } else {
2994                 err = -ENOENT;
2995         }
2996
2997         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
2998
2999         if (err)
3000                 goto err_out;
3001
3002         /* For each active neighbor, we have an L3 unicast group and
3003          * a /32 route to the neighbor, which uses the L3 unicast
3004          * group.  The L3 unicast group can also be referred to by
3005          * other routes' nexthops.
3006          */
3007
3008         err = rocker_group_l3_unicast(rocker_port, trans, flags,
3009                                       entry->index,
3010                                       rocker_port->dev->dev_addr,
3011                                       entry->eth_dst,
3012                                       rocker_port->internal_vlan_id,
3013                                       entry->ttl_check,
3014                                       rocker_port->pport);
3015         if (err) {
3016                 netdev_err(rocker_port->dev,
3017                            "Error (%d) L3 unicast group index %d\n",
3018                            err, entry->index);
3019                 goto err_out;
3020         }
3021
3022         if (adding || removing) {
3023                 group_id = ROCKER_GROUP_L3_UNICAST(entry->index);
3024                 err = rocker_flow_tbl_ucast4_routing(rocker_port, trans,
3025                                                      eth_type, ip_addr,
3026                                                      inet_make_mask(32),
3027                                                      priority, goto_tbl,
3028                                                      group_id, flags);
3029
3030                 if (err)
3031                         netdev_err(rocker_port->dev,
3032                                    "Error (%d) /32 unicast route %pI4 group 0x%08x\n",
3033                                    err, &entry->ip_addr, group_id);
3034         }
3035
3036 err_out:
3037         if (!adding)
3038                 rocker_port_kfree(trans, entry);
3039
3040         return err;
3041 }
3042
3043 static int rocker_port_ipv4_resolve(struct rocker_port *rocker_port,
3044                                     struct switchdev_trans *trans,
3045                                     __be32 ip_addr)
3046 {
3047         struct net_device *dev = rocker_port->dev;
3048         struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr);
3049         int err = 0;
3050
3051         if (!n) {
3052                 n = neigh_create(&arp_tbl, &ip_addr, dev);
3053                 if (IS_ERR(n))
3054                         return IS_ERR(n);
3055         }
3056
3057         /* If the neigh is already resolved, then go ahead and
3058          * install the entry, otherwise start the ARP process to
3059          * resolve the neigh.
3060          */
3061
3062         if (n->nud_state & NUD_VALID)
3063                 err = rocker_port_ipv4_neigh(rocker_port, trans, 0,
3064                                              ip_addr, n->ha);
3065         else
3066                 neigh_event_send(n, NULL);
3067
3068         neigh_release(n);
3069         return err;
3070 }
3071
3072 static int rocker_port_ipv4_nh(struct rocker_port *rocker_port,
3073                                struct switchdev_trans *trans, int flags,
3074                                __be32 ip_addr, u32 *index)
3075 {
3076         struct rocker *rocker = rocker_port->rocker;
3077         struct rocker_neigh_tbl_entry *entry;
3078         struct rocker_neigh_tbl_entry *found;
3079         unsigned long lock_flags;
3080         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3081         bool updating;
3082         bool removing;
3083         bool resolved = true;
3084         int err = 0;
3085
3086         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
3087         if (!entry)
3088                 return -ENOMEM;
3089
3090         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
3091
3092         found = rocker_neigh_tbl_find(rocker, ip_addr);
3093         if (found)
3094                 *index = found->index;
3095
3096         updating = found && adding;
3097         removing = found && !adding;
3098         adding = !found && adding;
3099
3100         if (adding) {
3101                 entry->ip_addr = ip_addr;
3102                 entry->dev = rocker_port->dev;
3103                 _rocker_neigh_add(rocker, trans, entry);
3104                 *index = entry->index;
3105                 resolved = false;
3106         } else if (removing) {
3107                 _rocker_neigh_del(trans, found);
3108         } else if (updating) {
3109                 _rocker_neigh_update(found, trans, NULL, false);
3110                 resolved = !is_zero_ether_addr(found->eth_dst);
3111         } else {
3112                 err = -ENOENT;
3113         }
3114
3115         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
3116
3117         if (!adding)
3118                 rocker_port_kfree(trans, entry);
3119
3120         if (err)
3121                 return err;
3122
3123         /* Resolved means neigh ip_addr is resolved to neigh mac. */
3124
3125         if (!resolved)
3126                 err = rocker_port_ipv4_resolve(rocker_port, trans, ip_addr);
3127
3128         return err;
3129 }
3130
3131 static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
3132                                         struct switchdev_trans *trans,
3133                                         int flags, __be16 vlan_id)
3134 {
3135         struct rocker_port *p;
3136         const struct rocker *rocker = rocker_port->rocker;
3137         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3138         u32 *group_ids;
3139         u8 group_count = 0;
3140         int err = 0;
3141         int i;
3142
3143         group_ids = rocker_port_kcalloc(rocker_port, trans, flags,
3144                                         rocker->port_count, sizeof(u32));
3145         if (!group_ids)
3146                 return -ENOMEM;
3147
3148         /* Adjust the flood group for this VLAN.  The flood group
3149          * references an L2 interface group for each port in this
3150          * VLAN.
3151          */
3152
3153         for (i = 0; i < rocker->port_count; i++) {
3154                 p = rocker->ports[i];
3155                 if (!p)
3156                         continue;
3157                 if (!rocker_port_is_bridged(p))
3158                         continue;
3159                 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
3160                         group_ids[group_count++] =
3161                                 ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport);
3162                 }
3163         }
3164
3165         /* If there are no bridged ports in this VLAN, we're done */
3166         if (group_count == 0)
3167                 goto no_ports_in_vlan;
3168
3169         err = rocker_group_l2_flood(rocker_port, trans, flags, vlan_id,
3170                                     group_count, group_ids, group_id);
3171         if (err)
3172                 netdev_err(rocker_port->dev,
3173                            "Error (%d) port VLAN l2 flood group\n", err);
3174
3175 no_ports_in_vlan:
3176         rocker_port_kfree(trans, group_ids);
3177         return err;
3178 }
3179
3180 static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
3181                                       struct switchdev_trans *trans, int flags,
3182                                       __be16 vlan_id, bool pop_vlan)
3183 {
3184         const struct rocker *rocker = rocker_port->rocker;
3185         struct rocker_port *p;
3186         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3187         u32 out_pport;
3188         int ref = 0;
3189         int err;
3190         int i;
3191
3192         /* An L2 interface group for this port in this VLAN, but
3193          * only when port STP state is LEARNING|FORWARDING.
3194          */
3195
3196         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3197             rocker_port->stp_state == BR_STATE_FORWARDING) {
3198                 out_pport = rocker_port->pport;
3199                 err = rocker_group_l2_interface(rocker_port, trans, flags,
3200                                                 vlan_id, out_pport, pop_vlan);
3201                 if (err) {
3202                         netdev_err(rocker_port->dev,
3203                                    "Error (%d) port VLAN l2 group for pport %d\n",
3204                                    err, out_pport);
3205                         return err;
3206                 }
3207         }
3208
3209         /* An L2 interface group for this VLAN to CPU port.
3210          * Add when first port joins this VLAN and destroy when
3211          * last port leaves this VLAN.
3212          */
3213
3214         for (i = 0; i < rocker->port_count; i++) {
3215                 p = rocker->ports[i];
3216                 if (p && test_bit(ntohs(vlan_id), p->vlan_bitmap))
3217                         ref++;
3218         }
3219
3220         if ((!adding || ref != 1) && (adding || ref != 0))
3221                 return 0;
3222
3223         out_pport = 0;
3224         err = rocker_group_l2_interface(rocker_port, trans, flags,
3225                                         vlan_id, out_pport, pop_vlan);
3226         if (err) {
3227                 netdev_err(rocker_port->dev,
3228                            "Error (%d) port VLAN l2 group for CPU port\n", err);
3229                 return err;
3230         }
3231
3232         return 0;
3233 }
3234
3235 static struct rocker_ctrl {
3236         const u8 *eth_dst;
3237         const u8 *eth_dst_mask;
3238         __be16 eth_type;
3239         bool acl;
3240         bool bridge;
3241         bool term;
3242         bool copy_to_cpu;
3243 } rocker_ctrls[] = {
3244         [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
3245                 /* pass link local multicast pkts up to CPU for filtering */
3246                 .eth_dst = ll_mac,
3247                 .eth_dst_mask = ll_mask,
3248                 .acl = true,
3249         },
3250         [ROCKER_CTRL_LOCAL_ARP] = {
3251                 /* pass local ARP pkts up to CPU */
3252                 .eth_dst = zero_mac,
3253                 .eth_dst_mask = zero_mac,
3254                 .eth_type = htons(ETH_P_ARP),
3255                 .acl = true,
3256         },
3257         [ROCKER_CTRL_IPV4_MCAST] = {
3258                 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
3259                 .eth_dst = ipv4_mcast,
3260                 .eth_dst_mask = ipv4_mask,
3261                 .eth_type = htons(ETH_P_IP),
3262                 .term  = true,
3263                 .copy_to_cpu = true,
3264         },
3265         [ROCKER_CTRL_IPV6_MCAST] = {
3266                 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
3267                 .eth_dst = ipv6_mcast,
3268                 .eth_dst_mask = ipv6_mask,
3269                 .eth_type = htons(ETH_P_IPV6),
3270                 .term  = true,
3271                 .copy_to_cpu = true,
3272         },
3273         [ROCKER_CTRL_DFLT_BRIDGING] = {
3274                 /* flood any pkts on vlan */
3275                 .bridge = true,
3276                 .copy_to_cpu = true,
3277         },
3278         [ROCKER_CTRL_DFLT_OVS] = {
3279                 /* pass all pkts up to CPU */
3280                 .eth_dst = zero_mac,
3281                 .eth_dst_mask = zero_mac,
3282                 .acl = true,
3283         },
3284 };
3285
3286 static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
3287                                      struct switchdev_trans *trans, int flags,
3288                                      const struct rocker_ctrl *ctrl, __be16 vlan_id)
3289 {
3290         u32 in_pport = rocker_port->pport;
3291         u32 in_pport_mask = 0xffffffff;
3292         u32 out_pport = 0;
3293         const u8 *eth_src = NULL;
3294         const u8 *eth_src_mask = NULL;
3295         __be16 vlan_id_mask = htons(0xffff);
3296         u8 ip_proto = 0;
3297         u8 ip_proto_mask = 0;
3298         u8 ip_tos = 0;
3299         u8 ip_tos_mask = 0;
3300         u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3301         int err;
3302
3303         err = rocker_flow_tbl_acl(rocker_port, trans, flags,
3304                                   in_pport, in_pport_mask,
3305                                   eth_src, eth_src_mask,
3306                                   ctrl->eth_dst, ctrl->eth_dst_mask,
3307                                   ctrl->eth_type,
3308                                   vlan_id, vlan_id_mask,
3309                                   ip_proto, ip_proto_mask,
3310                                   ip_tos, ip_tos_mask,
3311                                   group_id);
3312
3313         if (err)
3314                 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
3315
3316         return err;
3317 }
3318
3319 static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
3320                                         struct switchdev_trans *trans,
3321                                         int flags,
3322                                         const struct rocker_ctrl *ctrl,
3323                                         __be16 vlan_id)
3324 {
3325         enum rocker_of_dpa_table_id goto_tbl =
3326                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3327         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3328         u32 tunnel_id = 0;
3329         int err;
3330
3331         if (!rocker_port_is_bridged(rocker_port))
3332                 return 0;
3333
3334         err = rocker_flow_tbl_bridge(rocker_port, trans, flags,
3335                                      ctrl->eth_dst, ctrl->eth_dst_mask,
3336                                      vlan_id, tunnel_id,
3337                                      goto_tbl, group_id, ctrl->copy_to_cpu);
3338
3339         if (err)
3340                 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
3341
3342         return err;
3343 }
3344
3345 static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
3346                                       struct switchdev_trans *trans, int flags,
3347                                       const struct rocker_ctrl *ctrl, __be16 vlan_id)
3348 {
3349         u32 in_pport_mask = 0xffffffff;
3350         __be16 vlan_id_mask = htons(0xffff);
3351         int err;
3352
3353         if (ntohs(vlan_id) == 0)
3354                 vlan_id = rocker_port->internal_vlan_id;
3355
3356         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3357                                        rocker_port->pport, in_pport_mask,
3358                                        ctrl->eth_type, ctrl->eth_dst,
3359                                        ctrl->eth_dst_mask, vlan_id,
3360                                        vlan_id_mask, ctrl->copy_to_cpu,
3361                                        flags);
3362
3363         if (err)
3364                 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
3365
3366         return err;
3367 }
3368
3369 static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port,
3370                                  struct switchdev_trans *trans, int flags,
3371                                  const struct rocker_ctrl *ctrl, __be16 vlan_id)
3372 {
3373         if (ctrl->acl)
3374                 return rocker_port_ctrl_vlan_acl(rocker_port, trans, flags,
3375                                                  ctrl, vlan_id);
3376         if (ctrl->bridge)
3377                 return rocker_port_ctrl_vlan_bridge(rocker_port, trans, flags,
3378                                                     ctrl, vlan_id);
3379
3380         if (ctrl->term)
3381                 return rocker_port_ctrl_vlan_term(rocker_port, trans, flags,
3382                                                   ctrl, vlan_id);
3383
3384         return -EOPNOTSUPP;
3385 }
3386
3387 static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
3388                                      struct switchdev_trans *trans, int flags,
3389                                      __be16 vlan_id)
3390 {
3391         int err = 0;
3392         int i;
3393
3394         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3395                 if (rocker_port->ctrls[i]) {
3396                         err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3397                                                     &rocker_ctrls[i], vlan_id);
3398                         if (err)
3399                                 return err;
3400                 }
3401         }
3402
3403         return err;
3404 }
3405
3406 static int rocker_port_ctrl(struct rocker_port *rocker_port,
3407                             struct switchdev_trans *trans, int flags,
3408                             const struct rocker_ctrl *ctrl)
3409 {
3410         u16 vid;
3411         int err = 0;
3412
3413         for (vid = 1; vid < VLAN_N_VID; vid++) {
3414                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3415                         continue;
3416                 err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3417                                             ctrl, htons(vid));
3418                 if (err)
3419                         break;
3420         }
3421
3422         return err;
3423 }
3424
3425 static int rocker_port_vlan(struct rocker_port *rocker_port,
3426                             struct switchdev_trans *trans, int flags, u16 vid)
3427 {
3428         enum rocker_of_dpa_table_id goto_tbl =
3429                 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
3430         u32 in_pport = rocker_port->pport;
3431         __be16 vlan_id = htons(vid);
3432         __be16 vlan_id_mask = htons(0xffff);
3433         __be16 internal_vlan_id;
3434         bool untagged;
3435         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3436         int err;
3437
3438         internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
3439
3440         if (adding && test_bit(ntohs(internal_vlan_id),
3441                                rocker_port->vlan_bitmap))
3442                         return 0; /* already added */
3443         else if (!adding && !test_bit(ntohs(internal_vlan_id),
3444                                       rocker_port->vlan_bitmap))
3445                         return 0; /* already removed */
3446
3447         change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3448
3449         if (adding) {
3450                 err = rocker_port_ctrl_vlan_add(rocker_port, trans, flags,
3451                                                 internal_vlan_id);
3452                 if (err) {
3453                         netdev_err(rocker_port->dev,
3454                                    "Error (%d) port ctrl vlan add\n", err);
3455                         goto err_out;
3456                 }
3457         }
3458
3459         err = rocker_port_vlan_l2_groups(rocker_port, trans, flags,
3460                                          internal_vlan_id, untagged);
3461         if (err) {
3462                 netdev_err(rocker_port->dev,
3463                            "Error (%d) port VLAN l2 groups\n", err);
3464                 goto err_out;
3465         }
3466
3467         err = rocker_port_vlan_flood_group(rocker_port, trans, flags,
3468                                            internal_vlan_id);
3469         if (err) {
3470                 netdev_err(rocker_port->dev,
3471                            "Error (%d) port VLAN l2 flood group\n", err);
3472                 goto err_out;
3473         }
3474
3475         err = rocker_flow_tbl_vlan(rocker_port, trans, flags,
3476                                    in_pport, vlan_id, vlan_id_mask,
3477                                    goto_tbl, untagged, internal_vlan_id);
3478         if (err)
3479                 netdev_err(rocker_port->dev,
3480                            "Error (%d) port VLAN table\n", err);
3481
3482 err_out:
3483         if (switchdev_trans_ph_prepare(trans))
3484                 change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3485
3486         return err;
3487 }
3488
3489 static int rocker_port_ig_tbl(struct rocker_port *rocker_port,
3490                               struct switchdev_trans *trans, int flags)
3491 {
3492         enum rocker_of_dpa_table_id goto_tbl;
3493         u32 in_pport;
3494         u32 in_pport_mask;
3495         int err;
3496
3497         /* Normal Ethernet Frames.  Matches pkts from any local physical
3498          * ports.  Goto VLAN tbl.
3499          */
3500
3501         in_pport = 0;
3502         in_pport_mask = 0xffff0000;
3503         goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
3504
3505         err = rocker_flow_tbl_ig_port(rocker_port, trans, flags,
3506                                       in_pport, in_pport_mask,
3507                                       goto_tbl);
3508         if (err)
3509                 netdev_err(rocker_port->dev,
3510                            "Error (%d) ingress port table entry\n", err);
3511
3512         return err;
3513 }
3514
3515 struct rocker_fdb_learn_work {
3516         struct work_struct work;
3517         struct rocker_port *rocker_port;
3518         struct switchdev_trans *trans;
3519         int flags;
3520         u8 addr[ETH_ALEN];
3521         u16 vid;
3522 };
3523
3524 static void rocker_port_fdb_learn_work(struct work_struct *work)
3525 {
3526         const struct rocker_fdb_learn_work *lw =
3527                 container_of(work, struct rocker_fdb_learn_work, work);
3528         bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
3529         bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
3530         struct switchdev_notifier_fdb_info info;
3531
3532         info.addr = lw->addr;
3533         info.vid = lw->vid;
3534
3535         rtnl_lock();
3536         if (learned && removing)
3537                 call_switchdev_notifiers(SWITCHDEV_FDB_DEL,
3538                                          lw->rocker_port->dev, &info.info);
3539         else if (learned && !removing)
3540                 call_switchdev_notifiers(SWITCHDEV_FDB_ADD,
3541                                          lw->rocker_port->dev, &info.info);
3542         rtnl_unlock();
3543
3544         rocker_port_kfree(lw->trans, work);
3545 }
3546
3547 static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
3548                                  struct switchdev_trans *trans, int flags,
3549                                  const u8 *addr, __be16 vlan_id)
3550 {
3551         struct rocker_fdb_learn_work *lw;
3552         enum rocker_of_dpa_table_id goto_tbl =
3553                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3554         u32 out_pport = rocker_port->pport;
3555         u32 tunnel_id = 0;
3556         u32 group_id = ROCKER_GROUP_NONE;
3557         bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
3558         bool copy_to_cpu = false;
3559         int err;
3560
3561         if (rocker_port_is_bridged(rocker_port))
3562                 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3563
3564         if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3565                 err = rocker_flow_tbl_bridge(rocker_port, trans, flags, addr,
3566                                              NULL, vlan_id, tunnel_id, goto_tbl,
3567                                              group_id, copy_to_cpu);
3568                 if (err)
3569                         return err;
3570         }
3571
3572         if (!syncing)
3573                 return 0;
3574
3575         if (!rocker_port_is_bridged(rocker_port))
3576                 return 0;
3577
3578         lw = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*lw));
3579         if (!lw)
3580                 return -ENOMEM;
3581
3582         INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3583
3584         lw->rocker_port = rocker_port;
3585         lw->trans = trans;
3586         lw->flags = flags;
3587         ether_addr_copy(lw->addr, addr);
3588         lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3589
3590         if (switchdev_trans_ph_prepare(trans))
3591                 rocker_port_kfree(trans, lw);
3592         else
3593                 schedule_work(&lw->work);
3594
3595         return 0;
3596 }
3597
3598 static struct rocker_fdb_tbl_entry *
3599 rocker_fdb_tbl_find(const struct rocker *rocker,
3600                     const struct rocker_fdb_tbl_entry *match)
3601 {
3602         struct rocker_fdb_tbl_entry *found;
3603
3604         hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3605                 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3606                         return found;
3607
3608         return NULL;
3609 }
3610
3611 static int rocker_port_fdb(struct rocker_port *rocker_port,
3612                            struct switchdev_trans *trans,
3613                            const unsigned char *addr,
3614                            __be16 vlan_id, int flags)
3615 {
3616         struct rocker *rocker = rocker_port->rocker;
3617         struct rocker_fdb_tbl_entry *fdb;
3618         struct rocker_fdb_tbl_entry *found;
3619         bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3620         unsigned long lock_flags;
3621
3622         fdb = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*fdb));
3623         if (!fdb)
3624                 return -ENOMEM;
3625
3626         fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
3627         fdb->touched = jiffies;
3628         fdb->key.rocker_port = rocker_port;
3629         ether_addr_copy(fdb->key.addr, addr);
3630         fdb->key.vlan_id = vlan_id;
3631         fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3632
3633         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3634
3635         found = rocker_fdb_tbl_find(rocker, fdb);
3636
3637         if (found) {
3638                 found->touched = jiffies;
3639                 if (removing) {
3640                         rocker_port_kfree(trans, fdb);
3641                         if (!switchdev_trans_ph_prepare(trans))
3642                                 hash_del(&found->entry);
3643                 }
3644         } else if (!removing) {
3645                 if (!switchdev_trans_ph_prepare(trans))
3646                         hash_add(rocker->fdb_tbl, &fdb->entry,
3647                                  fdb->key_crc32);
3648         }
3649
3650         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3651
3652         /* Check if adding and already exists, or removing and can't find */
3653         if (!found != !removing) {
3654                 rocker_port_kfree(trans, fdb);
3655                 if (!found && removing)
3656                         return 0;
3657                 /* Refreshing existing to update aging timers */
3658                 flags |= ROCKER_OP_FLAG_REFRESH;
3659         }
3660
3661         return rocker_port_fdb_learn(rocker_port, trans, flags, addr, vlan_id);
3662 }
3663
3664 static int rocker_port_fdb_flush(struct rocker_port *rocker_port,
3665                                  struct switchdev_trans *trans, int flags)
3666 {
3667         struct rocker *rocker = rocker_port->rocker;
3668         struct rocker_fdb_tbl_entry *found;
3669         unsigned long lock_flags;
3670         struct hlist_node *tmp;
3671         int bkt;
3672         int err = 0;
3673
3674         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3675             rocker_port->stp_state == BR_STATE_FORWARDING)
3676                 return 0;
3677
3678         flags |= ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
3679
3680         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3681
3682         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3683                 if (found->key.rocker_port != rocker_port)
3684                         continue;
3685                 if (!found->learned)
3686                         continue;
3687                 err = rocker_port_fdb_learn(rocker_port, trans, flags,
3688                                             found->key.addr,
3689                                             found->key.vlan_id);
3690                 if (err)
3691                         goto err_out;
3692                 if (!switchdev_trans_ph_prepare(trans))
3693                         hash_del(&found->entry);
3694         }
3695
3696 err_out:
3697         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3698
3699         return err;
3700 }
3701
3702 static void rocker_fdb_cleanup(unsigned long data)
3703 {
3704         struct rocker *rocker = (struct rocker *)data;
3705         struct rocker_port *rocker_port;
3706         struct rocker_fdb_tbl_entry *entry;
3707         struct hlist_node *tmp;
3708         unsigned long next_timer = jiffies + rocker->ageing_time;
3709         unsigned long expires;
3710         unsigned long lock_flags;
3711         int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE |
3712                     ROCKER_OP_FLAG_LEARNED;
3713         int bkt;
3714
3715         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3716
3717         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, entry, entry) {
3718                 if (!entry->learned)
3719                         continue;
3720                 rocker_port = entry->key.rocker_port;
3721                 expires = entry->touched + rocker_port->ageing_time;
3722                 if (time_before_eq(expires, jiffies)) {
3723                         rocker_port_fdb_learn(rocker_port, NULL,
3724                                               flags, entry->key.addr,
3725                                               entry->key.vlan_id);
3726                         hash_del(&entry->entry);
3727                 } else if (time_before(expires, next_timer)) {
3728                         next_timer = expires;
3729                 }
3730         }
3731
3732         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3733
3734         mod_timer(&rocker->fdb_cleanup_timer, round_jiffies_up(next_timer));
3735 }
3736
3737 static int rocker_port_router_mac(struct rocker_port *rocker_port,
3738                                   struct switchdev_trans *trans, int flags,
3739                                   __be16 vlan_id)
3740 {
3741         u32 in_pport_mask = 0xffffffff;
3742         __be16 eth_type;
3743         const u8 *dst_mac_mask = ff_mac;
3744         __be16 vlan_id_mask = htons(0xffff);
3745         bool copy_to_cpu = false;
3746         int err;
3747
3748         if (ntohs(vlan_id) == 0)
3749                 vlan_id = rocker_port->internal_vlan_id;
3750
3751         eth_type = htons(ETH_P_IP);
3752         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3753                                        rocker_port->pport, in_pport_mask,
3754                                        eth_type, rocker_port->dev->dev_addr,
3755                                        dst_mac_mask, vlan_id, vlan_id_mask,
3756                                        copy_to_cpu, flags);
3757         if (err)
3758                 return err;
3759
3760         eth_type = htons(ETH_P_IPV6);
3761         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3762                                        rocker_port->pport, in_pport_mask,
3763                                        eth_type, rocker_port->dev->dev_addr,
3764                                        dst_mac_mask, vlan_id, vlan_id_mask,
3765                                        copy_to_cpu, flags);
3766
3767         return err;
3768 }
3769
3770 static int rocker_port_fwding(struct rocker_port *rocker_port,
3771                               struct switchdev_trans *trans, int flags)
3772 {
3773         bool pop_vlan;
3774         u32 out_pport;
3775         __be16 vlan_id;
3776         u16 vid;
3777         int err;
3778
3779         /* Port will be forwarding-enabled if its STP state is LEARNING
3780          * or FORWARDING.  Traffic from CPU can still egress, regardless of
3781          * port STP state.  Use L2 interface group on port VLANs as a way
3782          * to toggle port forwarding: if forwarding is disabled, L2
3783          * interface group will not exist.
3784          */
3785
3786         if (rocker_port->stp_state != BR_STATE_LEARNING &&
3787             rocker_port->stp_state != BR_STATE_FORWARDING)
3788                 flags |= ROCKER_OP_FLAG_REMOVE;
3789
3790         out_pport = rocker_port->pport;
3791         for (vid = 1; vid < VLAN_N_VID; vid++) {
3792                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3793                         continue;
3794                 vlan_id = htons(vid);
3795                 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3796                 err = rocker_group_l2_interface(rocker_port, trans, flags,
3797                                                 vlan_id, out_pport, pop_vlan);
3798                 if (err) {
3799                         netdev_err(rocker_port->dev,
3800                                    "Error (%d) port VLAN l2 group for pport %d\n",
3801                                    err, out_pport);
3802                         return err;
3803                 }
3804         }
3805
3806         return 0;
3807 }
3808
3809 static int rocker_port_stp_update(struct rocker_port *rocker_port,
3810                                   struct switchdev_trans *trans, int flags,
3811                                   u8 state)
3812 {
3813         bool want[ROCKER_CTRL_MAX] = { 0, };
3814         bool prev_ctrls[ROCKER_CTRL_MAX];
3815         u8 uninitialized_var(prev_state);
3816         int err;
3817         int i;
3818
3819         if (switchdev_trans_ph_prepare(trans)) {
3820                 memcpy(prev_ctrls, rocker_port->ctrls, sizeof(prev_ctrls));
3821                 prev_state = rocker_port->stp_state;
3822         }
3823
3824         if (rocker_port->stp_state == state)
3825                 return 0;
3826
3827         rocker_port->stp_state = state;
3828
3829         switch (state) {
3830         case BR_STATE_DISABLED:
3831                 /* port is completely disabled */
3832                 break;
3833         case BR_STATE_LISTENING:
3834         case BR_STATE_BLOCKING:
3835                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3836                 break;
3837         case BR_STATE_LEARNING:
3838         case BR_STATE_FORWARDING:
3839                 if (!rocker_port_is_ovsed(rocker_port))
3840                         want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3841                 want[ROCKER_CTRL_IPV4_MCAST] = true;
3842                 want[ROCKER_CTRL_IPV6_MCAST] = true;
3843                 if (rocker_port_is_bridged(rocker_port))
3844                         want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3845                 else if (rocker_port_is_ovsed(rocker_port))
3846                         want[ROCKER_CTRL_DFLT_OVS] = true;
3847                 else
3848                         want[ROCKER_CTRL_LOCAL_ARP] = true;
3849                 break;
3850         }
3851
3852         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3853                 if (want[i] != rocker_port->ctrls[i]) {
3854                         int ctrl_flags = flags |
3855                                          (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3856                         err = rocker_port_ctrl(rocker_port, trans, ctrl_flags,
3857                                                &rocker_ctrls[i]);
3858                         if (err)
3859                                 goto err_out;
3860                         rocker_port->ctrls[i] = want[i];
3861                 }
3862         }
3863
3864         err = rocker_port_fdb_flush(rocker_port, trans, flags);
3865         if (err)
3866                 goto err_out;
3867
3868         err = rocker_port_fwding(rocker_port, trans, flags);
3869
3870 err_out:
3871         if (switchdev_trans_ph_prepare(trans)) {
3872                 memcpy(rocker_port->ctrls, prev_ctrls, sizeof(prev_ctrls));
3873                 rocker_port->stp_state = prev_state;
3874         }
3875
3876         return err;
3877 }
3878
3879 static int rocker_port_fwd_enable(struct rocker_port *rocker_port,
3880                                   struct switchdev_trans *trans, int flags)
3881 {
3882         if (rocker_port_is_bridged(rocker_port))
3883                 /* bridge STP will enable port */
3884                 return 0;
3885
3886         /* port is not bridged, so simulate going to FORWARDING state */
3887         return rocker_port_stp_update(rocker_port, trans, flags,
3888                                       BR_STATE_FORWARDING);
3889 }
3890
3891 static int rocker_port_fwd_disable(struct rocker_port *rocker_port,
3892                                    struct switchdev_trans *trans, int flags)
3893 {
3894         if (rocker_port_is_bridged(rocker_port))
3895                 /* bridge STP will disable port */
3896                 return 0;
3897
3898         /* port is not bridged, so simulate going to DISABLED state */
3899         return rocker_port_stp_update(rocker_port, trans, flags,
3900                                       BR_STATE_DISABLED);
3901 }
3902
3903 static struct rocker_internal_vlan_tbl_entry *
3904 rocker_internal_vlan_tbl_find(const struct rocker *rocker, int ifindex)
3905 {
3906         struct rocker_internal_vlan_tbl_entry *found;
3907
3908         hash_for_each_possible(rocker->internal_vlan_tbl, found,
3909                                entry, ifindex) {
3910                 if (found->ifindex == ifindex)
3911                         return found;
3912         }
3913
3914         return NULL;
3915 }
3916
3917 static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
3918                                                int ifindex)
3919 {
3920         struct rocker *rocker = rocker_port->rocker;
3921         struct rocker_internal_vlan_tbl_entry *entry;
3922         struct rocker_internal_vlan_tbl_entry *found;
3923         unsigned long lock_flags;
3924         int i;
3925
3926         entry = kzalloc(sizeof(*entry), GFP_KERNEL);
3927         if (!entry)
3928                 return 0;
3929
3930         entry->ifindex = ifindex;
3931
3932         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3933
3934         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3935         if (found) {
3936                 kfree(entry);
3937                 goto found;
3938         }
3939
3940         found = entry;
3941         hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
3942
3943         for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
3944                 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
3945                         continue;
3946                 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
3947                 goto found;
3948         }
3949
3950         netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
3951
3952 found:
3953         found->ref_count++;
3954         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3955
3956         return found->vlan_id;
3957 }
3958
3959 static void
3960 rocker_port_internal_vlan_id_put(const struct rocker_port *rocker_port,
3961                                  int ifindex)
3962 {
3963         struct rocker *rocker = rocker_port->rocker;
3964         struct rocker_internal_vlan_tbl_entry *found;
3965         unsigned long lock_flags;
3966         unsigned long bit;
3967
3968         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3969
3970         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3971         if (!found) {
3972                 netdev_err(rocker_port->dev,
3973                            "ifindex (%d) not found in internal VLAN tbl\n",
3974                            ifindex);
3975                 goto not_found;
3976         }
3977
3978         if (--found->ref_count <= 0) {
3979                 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
3980                 clear_bit(bit, rocker->internal_vlan_bitmap);
3981                 hash_del(&found->entry);
3982                 kfree(found);
3983         }
3984
3985 not_found:
3986         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3987 }
3988
3989 static int rocker_port_fib_ipv4(struct rocker_port *rocker_port,
3990                                 struct switchdev_trans *trans, __be32 dst,
3991                                 int dst_len, const struct fib_info *fi,
3992                                 u32 tb_id, int flags)
3993 {
3994         const struct fib_nh *nh;
3995         __be16 eth_type = htons(ETH_P_IP);
3996         __be32 dst_mask = inet_make_mask(dst_len);
3997         __be16 internal_vlan_id = rocker_port->internal_vlan_id;
3998         u32 priority = fi->fib_priority;
3999         enum rocker_of_dpa_table_id goto_tbl =
4000                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
4001         u32 group_id;
4002         bool nh_on_port;
4003         bool has_gw;
4004         u32 index;
4005         int err;
4006
4007         /* XXX support ECMP */
4008
4009         nh = fi->fib_nh;
4010         nh_on_port = (fi->fib_dev == rocker_port->dev);
4011         has_gw = !!nh->nh_gw;
4012
4013         if (has_gw && nh_on_port) {
4014                 err = rocker_port_ipv4_nh(rocker_port, trans, flags,
4015                                           nh->nh_gw, &index);
4016                 if (err)
4017                         return err;
4018
4019                 group_id = ROCKER_GROUP_L3_UNICAST(index);
4020         } else {
4021                 /* Send to CPU for processing */
4022                 group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
4023         }
4024
4025         err = rocker_flow_tbl_ucast4_routing(rocker_port, trans, eth_type, dst,
4026                                              dst_mask, priority, goto_tbl,
4027                                              group_id, flags);
4028         if (err)
4029                 netdev_err(rocker_port->dev, "Error (%d) IPv4 route %pI4\n",
4030                            err, &dst);
4031
4032         return err;
4033 }
4034
4035 /*****************
4036  * Net device ops
4037  *****************/
4038
4039 static int rocker_port_open(struct net_device *dev)
4040 {
4041         struct rocker_port *rocker_port = netdev_priv(dev);
4042         int err;
4043
4044         err = rocker_port_dma_rings_init(rocker_port);
4045         if (err)
4046                 return err;
4047
4048         err = request_irq(rocker_msix_tx_vector(rocker_port),
4049                           rocker_tx_irq_handler, 0,
4050                           rocker_driver_name, rocker_port);
4051         if (err) {
4052                 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
4053                 goto err_request_tx_irq;
4054         }
4055
4056         err = request_irq(rocker_msix_rx_vector(rocker_port),
4057                           rocker_rx_irq_handler, 0,
4058                           rocker_driver_name, rocker_port);
4059         if (err) {
4060                 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
4061                 goto err_request_rx_irq;
4062         }
4063
4064         err = rocker_port_fwd_enable(rocker_port, NULL, 0);
4065         if (err)
4066                 goto err_fwd_enable;
4067
4068         napi_enable(&rocker_port->napi_tx);
4069         napi_enable(&rocker_port->napi_rx);
4070         if (!dev->proto_down)
4071                 rocker_port_set_enable(rocker_port, true);
4072         netif_start_queue(dev);
4073         return 0;
4074
4075 err_fwd_enable:
4076         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4077 err_request_rx_irq:
4078         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4079 err_request_tx_irq:
4080         rocker_port_dma_rings_fini(rocker_port);
4081         return err;
4082 }
4083
4084 static int rocker_port_stop(struct net_device *dev)
4085 {
4086         struct rocker_port *rocker_port = netdev_priv(dev);
4087
4088         netif_stop_queue(dev);
4089         rocker_port_set_enable(rocker_port, false);
4090         napi_disable(&rocker_port->napi_rx);
4091         napi_disable(&rocker_port->napi_tx);
4092         rocker_port_fwd_disable(rocker_port, NULL,
4093                                 ROCKER_OP_FLAG_NOWAIT);
4094         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4095         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4096         rocker_port_dma_rings_fini(rocker_port);
4097
4098         return 0;
4099 }
4100
4101 static void rocker_tx_desc_frags_unmap(const struct rocker_port *rocker_port,
4102                                        const struct rocker_desc_info *desc_info)
4103 {
4104         const struct rocker *rocker = rocker_port->rocker;
4105         struct pci_dev *pdev = rocker->pdev;
4106         const struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
4107         struct rocker_tlv *attr;
4108         int rem;
4109
4110         rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
4111         if (!attrs[ROCKER_TLV_TX_FRAGS])
4112                 return;
4113         rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
4114                 const struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
4115                 dma_addr_t dma_handle;
4116                 size_t len;
4117
4118                 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
4119                         continue;
4120                 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
4121                                         attr);
4122                 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
4123                     !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
4124                         continue;
4125                 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
4126                 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
4127                 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
4128         }
4129 }
4130
4131 static int rocker_tx_desc_frag_map_put(const struct rocker_port *rocker_port,
4132                                        struct rocker_desc_info *desc_info,
4133                                        char *buf, size_t buf_len)
4134 {
4135         const struct rocker *rocker = rocker_port->rocker;
4136         struct pci_dev *pdev = rocker->pdev;
4137         dma_addr_t dma_handle;
4138         struct rocker_tlv *frag;
4139
4140         dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
4141         if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
4142                 if (net_ratelimit())
4143                         netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
4144                 return -EIO;
4145         }
4146         frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
4147         if (!frag)
4148                 goto unmap_frag;
4149         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
4150                                dma_handle))
4151                 goto nest_cancel;
4152         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
4153                                buf_len))
4154                 goto nest_cancel;
4155         rocker_tlv_nest_end(desc_info, frag);
4156         return 0;
4157
4158 nest_cancel:
4159         rocker_tlv_nest_cancel(desc_info, frag);
4160 unmap_frag:
4161         pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
4162         return -EMSGSIZE;
4163 }
4164
4165 static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
4166 {
4167         struct rocker_port *rocker_port = netdev_priv(dev);
4168         struct rocker *rocker = rocker_port->rocker;
4169         struct rocker_desc_info *desc_info;
4170         struct rocker_tlv *frags;
4171         int i;
4172         int err;
4173
4174         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4175         if (unlikely(!desc_info)) {
4176                 if (net_ratelimit())
4177                         netdev_err(dev, "tx ring full when queue awake\n");
4178                 return NETDEV_TX_BUSY;
4179         }
4180
4181         rocker_desc_cookie_ptr_set(desc_info, skb);
4182
4183         frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
4184         if (!frags)
4185                 goto out;
4186         err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4187                                           skb->data, skb_headlen(skb));
4188         if (err)
4189                 goto nest_cancel;
4190         if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX) {
4191                 err = skb_linearize(skb);
4192                 if (err)
4193                         goto unmap_frags;
4194         }
4195
4196         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
4197                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4198
4199                 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4200                                                   skb_frag_address(frag),
4201                                                   skb_frag_size(frag));
4202                 if (err)
4203                         goto unmap_frags;
4204         }
4205         rocker_tlv_nest_end(desc_info, frags);
4206
4207         rocker_desc_gen_clear(desc_info);
4208         rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
4209
4210         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4211         if (!desc_info)
4212                 netif_stop_queue(dev);
4213
4214         return NETDEV_TX_OK;
4215
4216 unmap_frags:
4217         rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4218 nest_cancel:
4219         rocker_tlv_nest_cancel(desc_info, frags);
4220 out:
4221         dev_kfree_skb(skb);
4222         dev->stats.tx_dropped++;
4223
4224         return NETDEV_TX_OK;
4225 }
4226
4227 static int rocker_port_set_mac_address(struct net_device *dev, void *p)
4228 {
4229         struct sockaddr *addr = p;
4230         struct rocker_port *rocker_port = netdev_priv(dev);
4231         int err;
4232
4233         if (!is_valid_ether_addr(addr->sa_data))
4234                 return -EADDRNOTAVAIL;
4235
4236         err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
4237         if (err)
4238                 return err;
4239         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
4240         return 0;
4241 }
4242
4243 static int rocker_port_change_mtu(struct net_device *dev, int new_mtu)
4244 {
4245         struct rocker_port *rocker_port = netdev_priv(dev);
4246         int running = netif_running(dev);
4247         int err;
4248
4249 #define ROCKER_PORT_MIN_MTU     68
4250 #define ROCKER_PORT_MAX_MTU     9000
4251
4252         if (new_mtu < ROCKER_PORT_MIN_MTU || new_mtu > ROCKER_PORT_MAX_MTU)
4253                 return -EINVAL;
4254
4255         if (running)
4256                 rocker_port_stop(dev);
4257
4258         netdev_info(dev, "MTU change from %d to %d\n", dev->mtu, new_mtu);
4259         dev->mtu = new_mtu;
4260
4261         err = rocker_cmd_set_port_settings_mtu(rocker_port, new_mtu);
4262         if (err)
4263                 return err;
4264
4265         if (running)
4266                 err = rocker_port_open(dev);
4267
4268         return err;
4269 }
4270
4271 static int rocker_port_get_phys_port_name(struct net_device *dev,
4272                                           char *buf, size_t len)
4273 {
4274         struct rocker_port *rocker_port = netdev_priv(dev);
4275         struct port_name name = { .buf = buf, .len = len };
4276         int err;
4277
4278         err = rocker_cmd_exec(rocker_port, NULL, 0,
4279                               rocker_cmd_get_port_settings_prep, NULL,
4280                               rocker_cmd_get_port_settings_phys_name_proc,
4281                               &name);
4282
4283         return err ? -EOPNOTSUPP : 0;
4284 }
4285
4286 static int rocker_port_change_proto_down(struct net_device *dev,
4287                                          bool proto_down)
4288 {
4289         struct rocker_port *rocker_port = netdev_priv(dev);
4290
4291         if (rocker_port->dev->flags & IFF_UP)
4292                 rocker_port_set_enable(rocker_port, !proto_down);
4293         rocker_port->dev->proto_down = proto_down;
4294         return 0;
4295 }
4296
4297 static void rocker_port_neigh_destroy(struct neighbour *n)
4298 {
4299         struct rocker_port *rocker_port = netdev_priv(n->dev);
4300         int flags = ROCKER_OP_FLAG_REMOVE | ROCKER_OP_FLAG_NOWAIT;
4301         __be32 ip_addr = *(__be32 *)n->primary_key;
4302
4303         rocker_port_ipv4_neigh(rocker_port, NULL,
4304                                flags, ip_addr, n->ha);
4305 }
4306
4307 static const struct net_device_ops rocker_port_netdev_ops = {
4308         .ndo_open                       = rocker_port_open,
4309         .ndo_stop                       = rocker_port_stop,
4310         .ndo_start_xmit                 = rocker_port_xmit,
4311         .ndo_set_mac_address            = rocker_port_set_mac_address,
4312         .ndo_change_mtu                 = rocker_port_change_mtu,
4313         .ndo_bridge_getlink             = switchdev_port_bridge_getlink,
4314         .ndo_bridge_setlink             = switchdev_port_bridge_setlink,
4315         .ndo_bridge_dellink             = switchdev_port_bridge_dellink,
4316         .ndo_fdb_add                    = switchdev_port_fdb_add,
4317         .ndo_fdb_del                    = switchdev_port_fdb_del,
4318         .ndo_fdb_dump                   = switchdev_port_fdb_dump,
4319         .ndo_get_phys_port_name         = rocker_port_get_phys_port_name,
4320         .ndo_change_proto_down          = rocker_port_change_proto_down,
4321         .ndo_neigh_destroy              = rocker_port_neigh_destroy,
4322 };
4323
4324 /********************
4325  * swdev interface
4326  ********************/
4327
4328 static int rocker_port_attr_get(struct net_device *dev,
4329                                 struct switchdev_attr *attr)
4330 {
4331         const struct rocker_port *rocker_port = netdev_priv(dev);
4332         const struct rocker *rocker = rocker_port->rocker;
4333
4334         switch (attr->id) {
4335         case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
4336                 attr->u.ppid.id_len = sizeof(rocker->hw.id);
4337                 memcpy(&attr->u.ppid.id, &rocker->hw.id, attr->u.ppid.id_len);
4338                 break;
4339         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
4340                 attr->u.brport_flags = rocker_port->brport_flags;
4341                 break;
4342         default:
4343                 return -EOPNOTSUPP;
4344         }
4345
4346         return 0;
4347 }
4348
4349 static int rocker_port_brport_flags_set(struct rocker_port *rocker_port,
4350                                         struct switchdev_trans *trans,
4351                                         unsigned long brport_flags)
4352 {
4353         unsigned long orig_flags;
4354         int err = 0;
4355
4356         orig_flags = rocker_port->brport_flags;
4357         rocker_port->brport_flags = brport_flags;
4358         if ((orig_flags ^ rocker_port->brport_flags) & BR_LEARNING)
4359                 err = rocker_port_set_learning(rocker_port, trans);
4360
4361         if (switchdev_trans_ph_prepare(trans))
4362                 rocker_port->brport_flags = orig_flags;
4363
4364         return err;
4365 }
4366
4367 static int rocker_port_bridge_ageing_time(struct rocker_port *rocker_port,
4368                                           struct switchdev_trans *trans,
4369                                           u32 ageing_time)
4370 {
4371         struct rocker *rocker = rocker_port->rocker;
4372
4373         if (!switchdev_trans_ph_prepare(trans)) {
4374                 rocker_port->ageing_time = clock_t_to_jiffies(ageing_time);
4375                 if (rocker_port->ageing_time < rocker->ageing_time)
4376                         rocker->ageing_time = rocker_port->ageing_time;
4377                 mod_timer(&rocker_port->rocker->fdb_cleanup_timer, jiffies);
4378         }
4379
4380         return 0;
4381 }
4382
4383 static int rocker_port_attr_set(struct net_device *dev,
4384                                 const struct switchdev_attr *attr,
4385                                 struct switchdev_trans *trans)
4386 {
4387         struct rocker_port *rocker_port = netdev_priv(dev);
4388         int err = 0;
4389
4390         switch (attr->id) {
4391         case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
4392                 err = rocker_port_stp_update(rocker_port, trans, 0,
4393                                              attr->u.stp_state);
4394                 break;
4395         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
4396                 err = rocker_port_brport_flags_set(rocker_port, trans,
4397                                                    attr->u.brport_flags);
4398                 break;
4399         case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
4400                 err = rocker_port_bridge_ageing_time(rocker_port, trans,
4401                                                      attr->u.ageing_time);
4402                 break;
4403         default:
4404                 err = -EOPNOTSUPP;
4405                 break;
4406         }
4407
4408         return err;
4409 }
4410
4411 static int rocker_port_vlan_add(struct rocker_port *rocker_port,
4412                                 struct switchdev_trans *trans,
4413                                 u16 vid, u16 flags)
4414 {
4415         int err;
4416
4417         /* XXX deal with flags for PVID and untagged */
4418
4419         err = rocker_port_vlan(rocker_port, trans, 0, vid);
4420         if (err)
4421                 return err;
4422
4423         err = rocker_port_router_mac(rocker_port, trans, 0, htons(vid));
4424         if (err)
4425                 rocker_port_vlan(rocker_port, trans,
4426                                  ROCKER_OP_FLAG_REMOVE, vid);
4427
4428         return err;
4429 }
4430
4431 static int rocker_port_vlans_add(struct rocker_port *rocker_port,
4432                                  struct switchdev_trans *trans,
4433                                  const struct switchdev_obj_port_vlan *vlan)
4434 {
4435         u16 vid;
4436         int err;
4437
4438         for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
4439                 err = rocker_port_vlan_add(rocker_port, trans,
4440                                            vid, vlan->flags);
4441                 if (err)
4442                         return err;
4443         }
4444
4445         return 0;
4446 }
4447
4448 static int rocker_port_fdb_add(struct rocker_port *rocker_port,
4449                                struct switchdev_trans *trans,
4450                                const struct switchdev_obj_port_fdb *fdb)
4451 {
4452         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
4453         int flags = 0;
4454
4455         if (!rocker_port_is_bridged(rocker_port))
4456                 return -EINVAL;
4457
4458         return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
4459 }
4460
4461 static int rocker_port_obj_add(struct net_device *dev,
4462                                const struct switchdev_obj *obj,
4463                                struct switchdev_trans *trans)
4464 {
4465         struct rocker_port *rocker_port = netdev_priv(dev);
4466         const struct switchdev_obj_ipv4_fib *fib4;
4467         int err = 0;
4468
4469         switch (obj->id) {
4470         case SWITCHDEV_OBJ_ID_PORT_VLAN:
4471                 err = rocker_port_vlans_add(rocker_port, trans,
4472                                             SWITCHDEV_OBJ_PORT_VLAN(obj));
4473                 break;
4474         case SWITCHDEV_OBJ_ID_IPV4_FIB:
4475                 fib4 = SWITCHDEV_OBJ_IPV4_FIB(obj);
4476                 err = rocker_port_fib_ipv4(rocker_port, trans,
4477                                            htonl(fib4->dst), fib4->dst_len,
4478                                            fib4->fi, fib4->tb_id, 0);
4479                 break;
4480         case SWITCHDEV_OBJ_ID_PORT_FDB:
4481                 err = rocker_port_fdb_add(rocker_port, trans,
4482                                           SWITCHDEV_OBJ_PORT_FDB(obj));
4483                 break;
4484         default:
4485                 err = -EOPNOTSUPP;
4486                 break;
4487         }
4488
4489         return err;
4490 }
4491
4492 static int rocker_port_vlan_del(struct rocker_port *rocker_port,
4493                                 u16 vid, u16 flags)
4494 {
4495         int err;
4496
4497         err = rocker_port_router_mac(rocker_port, NULL,
4498                                      ROCKER_OP_FLAG_REMOVE, htons(vid));
4499         if (err)
4500                 return err;
4501
4502         return rocker_port_vlan(rocker_port, NULL,
4503                                 ROCKER_OP_FLAG_REMOVE, vid);
4504 }
4505
4506 static int rocker_port_vlans_del(struct rocker_port *rocker_port,
4507                                  const struct switchdev_obj_port_vlan *vlan)
4508 {
4509         u16 vid;
4510         int err;
4511
4512         for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
4513                 err = rocker_port_vlan_del(rocker_port, vid, vlan->flags);
4514                 if (err)
4515                         return err;
4516         }
4517
4518         return 0;
4519 }
4520
4521 static int rocker_port_fdb_del(struct rocker_port *rocker_port,
4522                                struct switchdev_trans *trans,
4523                                const struct switchdev_obj_port_fdb *fdb)
4524 {
4525         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
4526         int flags = ROCKER_OP_FLAG_REMOVE;
4527
4528         if (!rocker_port_is_bridged(rocker_port))
4529                 return -EINVAL;
4530
4531         return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
4532 }
4533
4534 static int rocker_port_obj_del(struct net_device *dev,
4535                                const struct switchdev_obj *obj)
4536 {
4537         struct rocker_port *rocker_port = netdev_priv(dev);
4538         const struct switchdev_obj_ipv4_fib *fib4;
4539         int err = 0;
4540
4541         switch (obj->id) {
4542         case SWITCHDEV_OBJ_ID_PORT_VLAN:
4543                 err = rocker_port_vlans_del(rocker_port,
4544                                             SWITCHDEV_OBJ_PORT_VLAN(obj));
4545                 break;
4546         case SWITCHDEV_OBJ_ID_IPV4_FIB:
4547                 fib4 = SWITCHDEV_OBJ_IPV4_FIB(obj);
4548                 err = rocker_port_fib_ipv4(rocker_port, NULL,
4549                                            htonl(fib4->dst), fib4->dst_len,
4550                                            fib4->fi, fib4->tb_id,
4551                                            ROCKER_OP_FLAG_REMOVE);
4552                 break;
4553         case SWITCHDEV_OBJ_ID_PORT_FDB:
4554                 err = rocker_port_fdb_del(rocker_port, NULL,
4555                                           SWITCHDEV_OBJ_PORT_FDB(obj));
4556                 break;
4557         default:
4558                 err = -EOPNOTSUPP;
4559                 break;
4560         }
4561
4562         return err;
4563 }
4564
4565 static int rocker_port_fdb_dump(const struct rocker_port *rocker_port,
4566                                 struct switchdev_obj_port_fdb *fdb,
4567                                 switchdev_obj_dump_cb_t *cb)
4568 {
4569         struct rocker *rocker = rocker_port->rocker;
4570         struct rocker_fdb_tbl_entry *found;
4571         struct hlist_node *tmp;
4572         unsigned long lock_flags;
4573         int bkt;
4574         int err = 0;
4575
4576         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
4577         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
4578                 if (found->key.rocker_port != rocker_port)
4579                         continue;
4580                 ether_addr_copy(fdb->addr, found->key.addr);
4581                 fdb->ndm_state = NUD_REACHABLE;
4582                 fdb->vid = rocker_port_vlan_to_vid(rocker_port,
4583                                                    found->key.vlan_id);
4584                 err = cb(&fdb->obj);
4585                 if (err)
4586                         break;
4587         }
4588         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
4589
4590         return err;
4591 }
4592
4593 static int rocker_port_vlan_dump(const struct rocker_port *rocker_port,
4594                                  struct switchdev_obj_port_vlan *vlan,
4595                                  switchdev_obj_dump_cb_t *cb)
4596 {
4597         u16 vid;
4598         int err = 0;
4599
4600         for (vid = 1; vid < VLAN_N_VID; vid++) {
4601                 if (!test_bit(vid, rocker_port->vlan_bitmap))
4602                         continue;
4603                 vlan->flags = 0;
4604                 if (rocker_vlan_id_is_internal(htons(vid)))
4605                         vlan->flags |= BRIDGE_VLAN_INFO_PVID;
4606                 vlan->vid_begin = vlan->vid_end = vid;
4607                 err = cb(&vlan->obj);
4608                 if (err)
4609                         break;
4610         }
4611
4612         return err;
4613 }
4614
4615 static int rocker_port_obj_dump(struct net_device *dev,
4616                                 struct switchdev_obj *obj,
4617                                 switchdev_obj_dump_cb_t *cb)
4618 {
4619         const struct rocker_port *rocker_port = netdev_priv(dev);
4620         int err = 0;
4621
4622         switch (obj->id) {
4623         case SWITCHDEV_OBJ_ID_PORT_FDB:
4624                 err = rocker_port_fdb_dump(rocker_port,
4625                                            SWITCHDEV_OBJ_PORT_FDB(obj), cb);
4626                 break;
4627         case SWITCHDEV_OBJ_ID_PORT_VLAN:
4628                 err = rocker_port_vlan_dump(rocker_port,
4629                                             SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
4630                 break;
4631         default:
4632                 err = -EOPNOTSUPP;
4633                 break;
4634         }
4635
4636         return err;
4637 }
4638
4639 static const struct switchdev_ops rocker_port_switchdev_ops = {
4640         .switchdev_port_attr_get        = rocker_port_attr_get,
4641         .switchdev_port_attr_set        = rocker_port_attr_set,
4642         .switchdev_port_obj_add         = rocker_port_obj_add,
4643         .switchdev_port_obj_del         = rocker_port_obj_del,
4644         .switchdev_port_obj_dump        = rocker_port_obj_dump,
4645 };
4646
4647 /********************
4648  * ethtool interface
4649  ********************/
4650
4651 static int rocker_port_get_settings(struct net_device *dev,
4652                                     struct ethtool_cmd *ecmd)
4653 {
4654         struct rocker_port *rocker_port = netdev_priv(dev);
4655
4656         return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
4657 }
4658
4659 static int rocker_port_set_settings(struct net_device *dev,
4660                                     struct ethtool_cmd *ecmd)
4661 {
4662         struct rocker_port *rocker_port = netdev_priv(dev);
4663
4664         return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
4665 }
4666
4667 static void rocker_port_get_drvinfo(struct net_device *dev,
4668                                     struct ethtool_drvinfo *drvinfo)
4669 {
4670         strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
4671         strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
4672 }
4673
4674 static struct rocker_port_stats {
4675         char str[ETH_GSTRING_LEN];
4676         int type;
4677 } rocker_port_stats[] = {
4678         { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS,    },
4679         { "rx_bytes",   ROCKER_TLV_CMD_PORT_STATS_RX_BYTES,   },
4680         { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
4681         { "rx_errors",  ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS,  },
4682
4683         { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS,    },
4684         { "tx_bytes",   ROCKER_TLV_CMD_PORT_STATS_TX_BYTES,   },
4685         { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
4686         { "tx_errors",  ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS,  },
4687 };
4688
4689 #define ROCKER_PORT_STATS_LEN  ARRAY_SIZE(rocker_port_stats)
4690
4691 static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
4692                                     u8 *data)
4693 {
4694         u8 *p = data;
4695         int i;
4696
4697         switch (stringset) {
4698         case ETH_SS_STATS:
4699                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4700                         memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
4701                         p += ETH_GSTRING_LEN;
4702                 }
4703                 break;
4704         }
4705 }
4706
4707 static int
4708 rocker_cmd_get_port_stats_prep(const struct rocker_port *rocker_port,
4709                                struct rocker_desc_info *desc_info,
4710                                void *priv)
4711 {
4712         struct rocker_tlv *cmd_stats;
4713
4714         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
4715                                ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
4716                 return -EMSGSIZE;
4717
4718         cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
4719         if (!cmd_stats)
4720                 return -EMSGSIZE;
4721
4722         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT,
4723                                rocker_port->pport))
4724                 return -EMSGSIZE;
4725
4726         rocker_tlv_nest_end(desc_info, cmd_stats);
4727
4728         return 0;
4729 }
4730
4731 static int
4732 rocker_cmd_get_port_stats_ethtool_proc(const struct rocker_port *rocker_port,
4733                                        const struct rocker_desc_info *desc_info,
4734                                        void *priv)
4735 {
4736         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
4737         const struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
4738         const struct rocker_tlv *pattr;
4739         u32 pport;
4740         u64 *data = priv;
4741         int i;
4742
4743         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
4744
4745         if (!attrs[ROCKER_TLV_CMD_INFO])
4746                 return -EIO;
4747
4748         rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
4749                                 attrs[ROCKER_TLV_CMD_INFO]);
4750
4751         if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT])
4752                 return -EIO;
4753
4754         pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]);
4755         if (pport != rocker_port->pport)
4756                 return -EIO;
4757
4758         for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4759                 pattr = stats_attrs[rocker_port_stats[i].type];
4760                 if (!pattr)
4761                         continue;
4762
4763                 data[i] = rocker_tlv_get_u64(pattr);
4764         }
4765
4766         return 0;
4767 }
4768
4769 static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
4770                                              void *priv)
4771 {
4772         return rocker_cmd_exec(rocker_port, NULL, 0,
4773                                rocker_cmd_get_port_stats_prep, NULL,
4774                                rocker_cmd_get_port_stats_ethtool_proc,
4775                                priv);
4776 }
4777
4778 static void rocker_port_get_stats(struct net_device *dev,
4779                                   struct ethtool_stats *stats, u64 *data)
4780 {
4781         struct rocker_port *rocker_port = netdev_priv(dev);
4782
4783         if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
4784                 int i;
4785
4786                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
4787                         data[i] = 0;
4788         }
4789 }
4790
4791 static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
4792 {
4793         switch (sset) {
4794         case ETH_SS_STATS:
4795                 return ROCKER_PORT_STATS_LEN;
4796         default:
4797                 return -EOPNOTSUPP;
4798         }
4799 }
4800
4801 static const struct ethtool_ops rocker_port_ethtool_ops = {
4802         .get_settings           = rocker_port_get_settings,
4803         .set_settings           = rocker_port_set_settings,
4804         .get_drvinfo            = rocker_port_get_drvinfo,
4805         .get_link               = ethtool_op_get_link,
4806         .get_strings            = rocker_port_get_strings,
4807         .get_ethtool_stats      = rocker_port_get_stats,
4808         .get_sset_count         = rocker_port_get_sset_count,
4809 };
4810
4811 /*****************
4812  * NAPI interface
4813  *****************/
4814
4815 static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
4816 {
4817         return container_of(napi, struct rocker_port, napi_tx);
4818 }
4819
4820 static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
4821 {
4822         struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
4823         const struct rocker *rocker = rocker_port->rocker;
4824         const struct rocker_desc_info *desc_info;
4825         u32 credits = 0;
4826         int err;
4827
4828         /* Cleanup tx descriptors */
4829         while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
4830                 struct sk_buff *skb;
4831
4832                 err = rocker_desc_err(desc_info);
4833                 if (err && net_ratelimit())
4834                         netdev_err(rocker_port->dev, "tx desc received with err %d\n",
4835                                    err);
4836                 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4837
4838                 skb = rocker_desc_cookie_ptr_get(desc_info);
4839                 if (err == 0) {
4840                         rocker_port->dev->stats.tx_packets++;
4841                         rocker_port->dev->stats.tx_bytes += skb->len;
4842                 } else {
4843                         rocker_port->dev->stats.tx_errors++;
4844                 }
4845
4846                 dev_kfree_skb_any(skb);
4847                 credits++;
4848         }
4849
4850         if (credits && netif_queue_stopped(rocker_port->dev))
4851                 netif_wake_queue(rocker_port->dev);
4852
4853         napi_complete(napi);
4854         rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
4855
4856         return 0;
4857 }
4858
4859 static int rocker_port_rx_proc(const struct rocker *rocker,
4860                                const struct rocker_port *rocker_port,
4861                                struct rocker_desc_info *desc_info)
4862 {
4863         const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
4864         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
4865         size_t rx_len;
4866         u16 rx_flags = 0;
4867
4868         if (!skb)
4869                 return -ENOENT;
4870
4871         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
4872         if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
4873                 return -EINVAL;
4874         if (attrs[ROCKER_TLV_RX_FLAGS])
4875                 rx_flags = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FLAGS]);
4876
4877         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
4878
4879         rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
4880         skb_put(skb, rx_len);
4881         skb->protocol = eth_type_trans(skb, rocker_port->dev);
4882
4883         if (rx_flags & ROCKER_RX_FLAGS_FWD_OFFLOAD)
4884                 skb->offload_fwd_mark = rocker_port->dev->offload_fwd_mark;
4885
4886         rocker_port->dev->stats.rx_packets++;
4887         rocker_port->dev->stats.rx_bytes += skb->len;
4888
4889         netif_receive_skb(skb);
4890
4891         return rocker_dma_rx_ring_skb_alloc(rocker_port, desc_info);
4892 }
4893
4894 static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
4895 {
4896         return container_of(napi, struct rocker_port, napi_rx);
4897 }
4898
4899 static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
4900 {
4901         struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
4902         const struct rocker *rocker = rocker_port->rocker;
4903         struct rocker_desc_info *desc_info;
4904         u32 credits = 0;
4905         int err;
4906
4907         /* Process rx descriptors */
4908         while (credits < budget &&
4909                (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
4910                 err = rocker_desc_err(desc_info);
4911                 if (err) {
4912                         if (net_ratelimit())
4913                                 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
4914                                            err);
4915                 } else {
4916                         err = rocker_port_rx_proc(rocker, rocker_port,
4917                                                   desc_info);
4918                         if (err && net_ratelimit())
4919                                 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
4920                                            err);
4921                 }
4922                 if (err)
4923                         rocker_port->dev->stats.rx_errors++;
4924
4925                 rocker_desc_gen_clear(desc_info);
4926                 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
4927                 credits++;
4928         }
4929
4930         if (credits < budget)
4931                 napi_complete(napi);
4932
4933         rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
4934
4935         return credits;
4936 }
4937
4938 /*****************
4939  * PCI driver ops
4940  *****************/
4941
4942 static void rocker_carrier_init(const struct rocker_port *rocker_port)
4943 {
4944         const struct rocker *rocker = rocker_port->rocker;
4945         u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
4946         bool link_up;
4947
4948         link_up = link_status & (1 << rocker_port->pport);
4949         if (link_up)
4950                 netif_carrier_on(rocker_port->dev);
4951         else
4952                 netif_carrier_off(rocker_port->dev);
4953 }
4954
4955 static void rocker_remove_ports(const struct rocker *rocker)
4956 {
4957         struct rocker_port *rocker_port;
4958         int i;
4959
4960         for (i = 0; i < rocker->port_count; i++) {
4961                 rocker_port = rocker->ports[i];
4962                 if (!rocker_port)
4963                         continue;
4964                 rocker_port_ig_tbl(rocker_port, NULL, ROCKER_OP_FLAG_REMOVE);
4965                 unregister_netdev(rocker_port->dev);
4966                 free_netdev(rocker_port->dev);
4967         }
4968         kfree(rocker->ports);
4969 }
4970
4971 static void rocker_port_dev_addr_init(struct rocker_port *rocker_port)
4972 {
4973         const struct rocker *rocker = rocker_port->rocker;
4974         const struct pci_dev *pdev = rocker->pdev;
4975         int err;
4976
4977         err = rocker_cmd_get_port_settings_macaddr(rocker_port,
4978                                                    rocker_port->dev->dev_addr);
4979         if (err) {
4980                 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
4981                 eth_hw_addr_random(rocker_port->dev);
4982         }
4983 }
4984
4985 static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
4986 {
4987         const struct pci_dev *pdev = rocker->pdev;
4988         struct rocker_port *rocker_port;
4989         struct net_device *dev;
4990         u16 untagged_vid = 0;
4991         int err;
4992
4993         dev = alloc_etherdev(sizeof(struct rocker_port));
4994         if (!dev)
4995                 return -ENOMEM;
4996         rocker_port = netdev_priv(dev);
4997         rocker_port->dev = dev;
4998         rocker_port->rocker = rocker;
4999         rocker_port->port_number = port_number;
5000         rocker_port->pport = port_number + 1;
5001         rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
5002         rocker_port->ageing_time = BR_DEFAULT_AGEING_TIME;
5003
5004         rocker_port_dev_addr_init(rocker_port);
5005         dev->netdev_ops = &rocker_port_netdev_ops;
5006         dev->ethtool_ops = &rocker_port_ethtool_ops;
5007         dev->switchdev_ops = &rocker_port_switchdev_ops;
5008         netif_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
5009                        NAPI_POLL_WEIGHT);
5010         netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
5011                        NAPI_POLL_WEIGHT);
5012         rocker_carrier_init(rocker_port);
5013
5014         dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_SG;
5015
5016         err = register_netdev(dev);
5017         if (err) {
5018                 dev_err(&pdev->dev, "register_netdev failed\n");
5019                 goto err_register_netdev;
5020         }
5021         rocker->ports[port_number] = rocker_port;
5022
5023         switchdev_port_fwd_mark_set(rocker_port->dev, NULL, false);
5024
5025         rocker_port_set_learning(rocker_port, NULL);
5026
5027         err = rocker_port_ig_tbl(rocker_port, NULL, 0);
5028         if (err) {
5029                 netdev_err(rocker_port->dev, "install ig port table failed\n");
5030                 goto err_port_ig_tbl;
5031         }
5032
5033         rocker_port->internal_vlan_id =
5034                 rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
5035
5036         err = rocker_port_vlan_add(rocker_port, NULL, untagged_vid, 0);
5037         if (err) {
5038                 netdev_err(rocker_port->dev, "install untagged VLAN failed\n");
5039                 goto err_untagged_vlan;
5040         }
5041
5042         return 0;
5043
5044 err_untagged_vlan:
5045         rocker_port_ig_tbl(rocker_port, NULL, ROCKER_OP_FLAG_REMOVE);
5046 err_port_ig_tbl:
5047         rocker->ports[port_number] = NULL;
5048         unregister_netdev(dev);
5049 err_register_netdev:
5050         free_netdev(dev);
5051         return err;
5052 }
5053
5054 static int rocker_probe_ports(struct rocker *rocker)
5055 {
5056         int i;
5057         size_t alloc_size;
5058         int err;
5059
5060         alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
5061         rocker->ports = kzalloc(alloc_size, GFP_KERNEL);
5062         if (!rocker->ports)
5063                 return -ENOMEM;
5064         for (i = 0; i < rocker->port_count; i++) {
5065                 err = rocker_probe_port(rocker, i);
5066                 if (err)
5067                         goto remove_ports;
5068         }
5069         return 0;
5070
5071 remove_ports:
5072         rocker_remove_ports(rocker);
5073         return err;
5074 }
5075
5076 static int rocker_msix_init(struct rocker *rocker)
5077 {
5078         struct pci_dev *pdev = rocker->pdev;
5079         int msix_entries;
5080         int i;
5081         int err;
5082
5083         msix_entries = pci_msix_vec_count(pdev);
5084         if (msix_entries < 0)
5085                 return msix_entries;
5086
5087         if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
5088                 return -EINVAL;
5089
5090         rocker->msix_entries = kmalloc_array(msix_entries,
5091                                              sizeof(struct msix_entry),
5092                                              GFP_KERNEL);
5093         if (!rocker->msix_entries)
5094                 return -ENOMEM;
5095
5096         for (i = 0; i < msix_entries; i++)
5097                 rocker->msix_entries[i].entry = i;
5098
5099         err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
5100         if (err < 0)
5101                 goto err_enable_msix;
5102
5103         return 0;
5104
5105 err_enable_msix:
5106         kfree(rocker->msix_entries);
5107         return err;
5108 }
5109
5110 static void rocker_msix_fini(const struct rocker *rocker)
5111 {
5112         pci_disable_msix(rocker->pdev);
5113         kfree(rocker->msix_entries);
5114 }
5115
5116 static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
5117 {
5118         struct rocker *rocker;
5119         int err;
5120
5121         rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
5122         if (!rocker)
5123                 return -ENOMEM;
5124
5125         err = pci_enable_device(pdev);
5126         if (err) {
5127                 dev_err(&pdev->dev, "pci_enable_device failed\n");
5128                 goto err_pci_enable_device;
5129         }
5130
5131         err = pci_request_regions(pdev, rocker_driver_name);
5132         if (err) {
5133                 dev_err(&pdev->dev, "pci_request_regions failed\n");
5134                 goto err_pci_request_regions;
5135         }
5136
5137         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
5138         if (!err) {
5139                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
5140                 if (err) {
5141                         dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
5142                         goto err_pci_set_dma_mask;
5143                 }
5144         } else {
5145                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
5146                 if (err) {
5147                         dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
5148                         goto err_pci_set_dma_mask;
5149                 }
5150         }
5151
5152         if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
5153                 dev_err(&pdev->dev, "invalid PCI region size\n");
5154                 err = -EINVAL;
5155                 goto err_pci_resource_len_check;
5156         }
5157
5158         rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
5159                                   pci_resource_len(pdev, 0));
5160         if (!rocker->hw_addr) {
5161                 dev_err(&pdev->dev, "ioremap failed\n");
5162                 err = -EIO;
5163                 goto err_ioremap;
5164         }
5165         pci_set_master(pdev);
5166
5167         rocker->pdev = pdev;
5168         pci_set_drvdata(pdev, rocker);
5169
5170         rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
5171
5172         err = rocker_msix_init(rocker);
5173         if (err) {
5174                 dev_err(&pdev->dev, "MSI-X init failed\n");
5175                 goto err_msix_init;
5176         }
5177
5178         err = rocker_basic_hw_test(rocker);
5179         if (err) {
5180                 dev_err(&pdev->dev, "basic hw test failed\n");
5181                 goto err_basic_hw_test;
5182         }
5183
5184         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5185
5186         err = rocker_dma_rings_init(rocker);
5187         if (err)
5188                 goto err_dma_rings_init;
5189
5190         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
5191                           rocker_cmd_irq_handler, 0,
5192                           rocker_driver_name, rocker);
5193         if (err) {
5194                 dev_err(&pdev->dev, "cannot assign cmd irq\n");
5195                 goto err_request_cmd_irq;
5196         }
5197
5198         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
5199                           rocker_event_irq_handler, 0,
5200                           rocker_driver_name, rocker);
5201         if (err) {
5202                 dev_err(&pdev->dev, "cannot assign event irq\n");
5203                 goto err_request_event_irq;
5204         }
5205
5206         rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
5207
5208         err = rocker_init_tbls(rocker);
5209         if (err) {
5210                 dev_err(&pdev->dev, "cannot init rocker tables\n");
5211                 goto err_init_tbls;
5212         }
5213
5214         rocker->ageing_time = BR_DEFAULT_AGEING_TIME;
5215         setup_timer(&rocker->fdb_cleanup_timer, rocker_fdb_cleanup,
5216                     (unsigned long) rocker);
5217         mod_timer(&rocker->fdb_cleanup_timer, jiffies);
5218
5219         rocker->ageing_time = BR_DEFAULT_AGEING_TIME;
5220
5221         err = rocker_probe_ports(rocker);
5222         if (err) {
5223                 dev_err(&pdev->dev, "failed to probe ports\n");
5224                 goto err_probe_ports;
5225         }
5226
5227         dev_info(&pdev->dev, "Rocker switch with id %*phN\n",
5228                  (int)sizeof(rocker->hw.id), &rocker->hw.id);
5229
5230         return 0;
5231
5232 err_probe_ports:
5233         del_timer_sync(&rocker->fdb_cleanup_timer);
5234         rocker_free_tbls(rocker);
5235 err_init_tbls:
5236         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5237 err_request_event_irq:
5238         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5239 err_request_cmd_irq:
5240         rocker_dma_rings_fini(rocker);
5241 err_dma_rings_init:
5242 err_basic_hw_test:
5243         rocker_msix_fini(rocker);
5244 err_msix_init:
5245         iounmap(rocker->hw_addr);
5246 err_ioremap:
5247 err_pci_resource_len_check:
5248 err_pci_set_dma_mask:
5249         pci_release_regions(pdev);
5250 err_pci_request_regions:
5251         pci_disable_device(pdev);
5252 err_pci_enable_device:
5253         kfree(rocker);
5254         return err;
5255 }
5256
5257 static void rocker_remove(struct pci_dev *pdev)
5258 {
5259         struct rocker *rocker = pci_get_drvdata(pdev);
5260
5261         del_timer_sync(&rocker->fdb_cleanup_timer);
5262         rocker_free_tbls(rocker);
5263         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5264         rocker_remove_ports(rocker);
5265         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5266         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5267         rocker_dma_rings_fini(rocker);
5268         rocker_msix_fini(rocker);
5269         iounmap(rocker->hw_addr);
5270         pci_release_regions(rocker->pdev);
5271         pci_disable_device(rocker->pdev);
5272         kfree(rocker);
5273 }
5274
5275 static struct pci_driver rocker_pci_driver = {
5276         .name           = rocker_driver_name,
5277         .id_table       = rocker_pci_id_table,
5278         .probe          = rocker_probe,
5279         .remove         = rocker_remove,
5280 };
5281
5282 /************************************
5283  * Net device notifier event handler
5284  ************************************/
5285
5286 static bool rocker_port_dev_check(const struct net_device *dev)
5287 {
5288         return dev->netdev_ops == &rocker_port_netdev_ops;
5289 }
5290
5291 static int rocker_port_bridge_join(struct rocker_port *rocker_port,
5292                                    struct net_device *bridge)
5293 {
5294         u16 untagged_vid = 0;
5295         int err;
5296
5297         /* Port is joining bridge, so the internal VLAN for the
5298          * port is going to change to the bridge internal VLAN.
5299          * Let's remove untagged VLAN (vid=0) from port and
5300          * re-add once internal VLAN has changed.
5301          */
5302
5303         err = rocker_port_vlan_del(rocker_port, untagged_vid, 0);
5304         if (err)
5305                 return err;
5306
5307         rocker_port_internal_vlan_id_put(rocker_port,
5308                                          rocker_port->dev->ifindex);
5309         rocker_port->internal_vlan_id =
5310                 rocker_port_internal_vlan_id_get(rocker_port, bridge->ifindex);
5311
5312         rocker_port->bridge_dev = bridge;
5313         switchdev_port_fwd_mark_set(rocker_port->dev, bridge, true);
5314
5315         return rocker_port_vlan_add(rocker_port, NULL, untagged_vid, 0);
5316 }
5317
5318 static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
5319 {
5320         u16 untagged_vid = 0;
5321         int err;
5322
5323         err = rocker_port_vlan_del(rocker_port, untagged_vid, 0);
5324         if (err)
5325                 return err;
5326
5327         rocker_port_internal_vlan_id_put(rocker_port,
5328                                          rocker_port->bridge_dev->ifindex);
5329         rocker_port->internal_vlan_id =
5330                 rocker_port_internal_vlan_id_get(rocker_port,
5331                                                  rocker_port->dev->ifindex);
5332
5333         switchdev_port_fwd_mark_set(rocker_port->dev, rocker_port->bridge_dev,
5334                                     false);
5335         rocker_port->bridge_dev = NULL;
5336
5337         err = rocker_port_vlan_add(rocker_port, NULL, untagged_vid, 0);
5338         if (err)
5339                 return err;
5340
5341         if (rocker_port->dev->flags & IFF_UP)
5342                 err = rocker_port_fwd_enable(rocker_port, NULL, 0);
5343
5344         return err;
5345 }
5346
5347
5348 static int rocker_port_ovs_changed(struct rocker_port *rocker_port,
5349                                    struct net_device *master)
5350 {
5351         int err;
5352
5353         rocker_port->bridge_dev = master;
5354
5355         err = rocker_port_fwd_disable(rocker_port, NULL, 0);
5356         if (err)
5357                 return err;
5358         err = rocker_port_fwd_enable(rocker_port, NULL, 0);
5359
5360         return err;
5361 }
5362
5363 static int rocker_port_master_linked(struct rocker_port *rocker_port,
5364                                      struct net_device *master)
5365 {
5366         int err = 0;
5367
5368         if (netif_is_bridge_master(master))
5369                 err = rocker_port_bridge_join(rocker_port, master);
5370         else if (netif_is_ovs_master(master))
5371                 err = rocker_port_ovs_changed(rocker_port, master);
5372         return err;
5373 }
5374
5375 static int rocker_port_master_unlinked(struct rocker_port *rocker_port)
5376 {
5377         int err = 0;
5378
5379         if (rocker_port_is_bridged(rocker_port))
5380                 err = rocker_port_bridge_leave(rocker_port);
5381         else if (rocker_port_is_ovsed(rocker_port))
5382                 err = rocker_port_ovs_changed(rocker_port, NULL);
5383         return err;
5384 }
5385
5386 static int rocker_netdevice_event(struct notifier_block *unused,
5387                                   unsigned long event, void *ptr)
5388 {
5389         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
5390         struct netdev_notifier_changeupper_info *info;
5391         struct rocker_port *rocker_port;
5392         int err;
5393
5394         if (!rocker_port_dev_check(dev))
5395                 return NOTIFY_DONE;
5396
5397         switch (event) {
5398         case NETDEV_CHANGEUPPER:
5399                 info = ptr;
5400                 if (!info->master)
5401                         goto out;
5402                 rocker_port = netdev_priv(dev);
5403                 if (info->linking) {
5404                         err = rocker_port_master_linked(rocker_port,
5405                                                         info->upper_dev);
5406                         if (err)
5407                                 netdev_warn(dev, "failed to reflect master linked (err %d)\n",
5408                                             err);
5409                 } else {
5410                         err = rocker_port_master_unlinked(rocker_port);
5411                         if (err)
5412                                 netdev_warn(dev, "failed to reflect master unlinked (err %d)\n",
5413                                             err);
5414                 }
5415                 break;
5416         }
5417 out:
5418         return NOTIFY_DONE;
5419 }
5420
5421 static struct notifier_block rocker_netdevice_nb __read_mostly = {
5422         .notifier_call = rocker_netdevice_event,
5423 };
5424
5425 /************************************
5426  * Net event notifier event handler
5427  ************************************/
5428
5429 static int rocker_neigh_update(struct net_device *dev, struct neighbour *n)
5430 {
5431         struct rocker_port *rocker_port = netdev_priv(dev);
5432         int flags = (n->nud_state & NUD_VALID ? 0 : ROCKER_OP_FLAG_REMOVE) |
5433                     ROCKER_OP_FLAG_NOWAIT;
5434         __be32 ip_addr = *(__be32 *)n->primary_key;
5435
5436         return rocker_port_ipv4_neigh(rocker_port, NULL, flags, ip_addr, n->ha);
5437 }
5438
5439 static int rocker_netevent_event(struct notifier_block *unused,
5440                                  unsigned long event, void *ptr)
5441 {
5442         struct net_device *dev;
5443         struct neighbour *n = ptr;
5444         int err;
5445
5446         switch (event) {
5447         case NETEVENT_NEIGH_UPDATE:
5448                 if (n->tbl != &arp_tbl)
5449                         return NOTIFY_DONE;
5450                 dev = n->dev;
5451                 if (!rocker_port_dev_check(dev))
5452                         return NOTIFY_DONE;
5453                 err = rocker_neigh_update(dev, n);
5454                 if (err)
5455                         netdev_warn(dev,
5456                                     "failed to handle neigh update (err %d)\n",
5457                                     err);
5458                 break;
5459         }
5460
5461         return NOTIFY_DONE;
5462 }
5463
5464 static struct notifier_block rocker_netevent_nb __read_mostly = {
5465         .notifier_call = rocker_netevent_event,
5466 };
5467
5468 /***********************
5469  * Module init and exit
5470  ***********************/
5471
5472 static int __init rocker_module_init(void)
5473 {
5474         int err;
5475
5476         register_netdevice_notifier(&rocker_netdevice_nb);
5477         register_netevent_notifier(&rocker_netevent_nb);
5478         err = pci_register_driver(&rocker_pci_driver);
5479         if (err)
5480                 goto err_pci_register_driver;
5481         return 0;
5482
5483 err_pci_register_driver:
5484         unregister_netevent_notifier(&rocker_netevent_nb);
5485         unregister_netdevice_notifier(&rocker_netdevice_nb);
5486         return err;
5487 }
5488
5489 static void __exit rocker_module_exit(void)
5490 {
5491         unregister_netevent_notifier(&rocker_netevent_nb);
5492         unregister_netdevice_notifier(&rocker_netdevice_nb);
5493         pci_unregister_driver(&rocker_pci_driver);
5494 }
5495
5496 module_init(rocker_module_init);
5497 module_exit(rocker_module_exit);
5498
5499 MODULE_LICENSE("GPL v2");
5500 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
5501 MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
5502 MODULE_DESCRIPTION("Rocker switch device driver");
5503 MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);