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