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 <asm-generic/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         struct rocker_fdb_tbl_key {
 156                 u32 pport;
 157                 u8 addr[ETH_ALEN];
 158                 __be16 vlan_id;
 159         } key;
 160 };
 161
 162 struct rocker_internal_vlan_tbl_entry {
 163         struct hlist_node entry;
 164         int ifindex; /* key */
 165         u32 ref_count;
 166         __be16 vlan_id;
 167 };
 168
 169 struct rocker_neigh_tbl_entry {
 170         struct hlist_node entry;
 171         __be32 ip_addr; /* key */
 172         struct net_device *dev;
 173         u32 ref_count;
 174         u32 index;
 175         u8 eth_dst[ETH_ALEN];
 176         bool ttl_check;
 177 };
 178
 179 struct rocker_desc_info {
 180         char *data; /* mapped */
 181         size_t data_size;
 182         size_t tlv_size;
 183         struct rocker_desc *desc;
 184         DEFINE_DMA_UNMAP_ADDR(mapaddr);
 185 };
 186
 187 struct rocker_dma_ring_info {
 188         size_t size;
 189         u32 head;
 190         u32 tail;
 191         struct rocker_desc *desc; /* mapped */
 192         dma_addr_t mapaddr;
 193         struct rocker_desc_info *desc_info;
 194         unsigned int type;
 195 };
 196
 197 struct rocker;
 198
 199 enum {
 200         ROCKER_CTRL_LINK_LOCAL_MCAST,
 201         ROCKER_CTRL_LOCAL_ARP,
 202         ROCKER_CTRL_IPV4_MCAST,
 203         ROCKER_CTRL_IPV6_MCAST,
 204         ROCKER_CTRL_DFLT_BRIDGING,
 205         ROCKER_CTRL_MAX,
 206 };
 207
 208 #define ROCKER_INTERNAL_VLAN_ID_BASE    0x0f00
 209 #define ROCKER_N_INTERNAL_VLANS         255
 210 #define ROCKER_VLAN_BITMAP_LEN          BITS_TO_LONGS(VLAN_N_VID)
 211 #define ROCKER_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(ROCKER_N_INTERNAL_VLANS)
 212
 213 struct rocker_port {
 214         struct net_device *dev;
 215         struct net_device *bridge_dev;
 216         struct rocker *rocker;
 217         unsigned int port_number;
 218         u32 pport;
 219         __be16 internal_vlan_id;
 220         int stp_state;
 221         u32 brport_flags;
 222         bool ctrls[ROCKER_CTRL_MAX];
 223         unsigned long vlan_bitmap[ROCKER_VLAN_BITMAP_LEN];
 224         struct napi_struct napi_tx;
 225         struct napi_struct napi_rx;
 226         struct rocker_dma_ring_info tx_ring;
 227         struct rocker_dma_ring_info rx_ring;
 228 };
 229
 230 struct rocker {
 231         struct pci_dev *pdev;
 232         u8 __iomem *hw_addr;
 233         struct msix_entry *msix_entries;
 234         unsigned int port_count;
 235         struct rocker_port **ports;
 236         struct {
 237                 u64 id;
 238         } hw;
 239         spinlock_t cmd_ring_lock;
 240         struct rocker_dma_ring_info cmd_ring;
 241         struct rocker_dma_ring_info event_ring;
 242         DECLARE_HASHTABLE(flow_tbl, 16);
 243         spinlock_t flow_tbl_lock;
 244         u64 flow_tbl_next_cookie;
 245         DECLARE_HASHTABLE(group_tbl, 16);
 246         spinlock_t group_tbl_lock;
 247         DECLARE_HASHTABLE(fdb_tbl, 16);
 248         spinlock_t fdb_tbl_lock;
 249         unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN];
 250         DECLARE_HASHTABLE(internal_vlan_tbl, 8);
 251         spinlock_t internal_vlan_tbl_lock;
 252         DECLARE_HASHTABLE(neigh_tbl, 16);
 253         spinlock_t neigh_tbl_lock;
 254         u32 neigh_tbl_next_index;
 255 };
 256
 257 static const u8 zero_mac[ETH_ALEN]   = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
 258 static const u8 ff_mac[ETH_ALEN]     = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 259 static const u8 ll_mac[ETH_ALEN]     = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
 260 static const u8 ll_mask[ETH_ALEN]    = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
 261 static const u8 mcast_mac[ETH_ALEN]  = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
 262 static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
 263 static const u8 ipv4_mask[ETH_ALEN]  = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
 264 static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
 265 static const u8 ipv6_mask[ETH_ALEN]  = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
 266
 267 /* Rocker priority levels for flow table entries.  Higher
 268  * priority match takes precedence over lower priority match.
 269  */
 270
 271 enum {
 272         ROCKER_PRIORITY_UNKNOWN = 0,
 273         ROCKER_PRIORITY_IG_PORT = 1,
 274         ROCKER_PRIORITY_VLAN = 1,
 275         ROCKER_PRIORITY_TERM_MAC_UCAST = 0,
 276         ROCKER_PRIORITY_TERM_MAC_MCAST = 1,
 277         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
 278         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
 279         ROCKER_PRIORITY_BRIDGING_VLAN = 3,
 280         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
 281         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
 282         ROCKER_PRIORITY_BRIDGING_TENANT = 3,
 283         ROCKER_PRIORITY_ACL_CTRL = 3,
 284         ROCKER_PRIORITY_ACL_NORMAL = 2,
 285         ROCKER_PRIORITY_ACL_DFLT = 1,
 286 };
 287
 288 static bool rocker_vlan_id_is_internal(__be16 vlan_id)
 289 {
 290         u16 start = ROCKER_INTERNAL_VLAN_ID_BASE;
 291         u16 end = 0xffe;
 292         u16 _vlan_id = ntohs(vlan_id);
 293
 294         return (_vlan_id >= start && _vlan_id <= end);
 295 }
 296
 297 static __be16 rocker_port_vid_to_vlan(struct rocker_port *rocker_port,
 298                                       u16 vid, bool *pop_vlan)
 299 {
 300         __be16 vlan_id;
 301
 302         if (pop_vlan)
 303                 *pop_vlan = false;
 304         vlan_id = htons(vid);
 305         if (!vlan_id) {
 306                 vlan_id = rocker_port->internal_vlan_id;
 307                 if (pop_vlan)
 308                         *pop_vlan = true;
 309         }
 310
 311         return vlan_id;
 312 }
 313
 314 static u16 rocker_port_vlan_to_vid(struct rocker_port *rocker_port,
 315                                    __be16 vlan_id)
 316 {
 317         if (rocker_vlan_id_is_internal(vlan_id))
 318                 return 0;
 319
 320         return ntohs(vlan_id);
 321 }
 322
 323 static bool rocker_port_is_bridged(struct rocker_port *rocker_port)
 324 {
 325         return !!rocker_port->bridge_dev;
 326 }
 327
 328 struct rocker_wait {
 329         wait_queue_head_t wait;
 330         bool done;
 331         bool nowait;
 332 };
 333
 334 static void rocker_wait_reset(struct rocker_wait *wait)
 335 {
 336         wait->done = false;
 337         wait->nowait = false;
 338 }
 339
 340 static void rocker_wait_init(struct rocker_wait *wait)
 341 {
 342         init_waitqueue_head(&wait->wait);
 343         rocker_wait_reset(wait);
 344 }
 345
 346 static struct rocker_wait *rocker_wait_create(gfp_t gfp)
 347 {
 348         struct rocker_wait *wait;
 349
 350         wait = kmalloc(sizeof(*wait), gfp);
 351         if (!wait)
 352                 return NULL;
 353         rocker_wait_init(wait);
 354         return wait;
 355 }
 356
 357 static void rocker_wait_destroy(struct rocker_wait *work)
 358 {
 359         kfree(work);
 360 }
 361
 362 static bool rocker_wait_event_timeout(struct rocker_wait *wait,
 363                                       unsigned long timeout)
 364 {
 365         wait_event_timeout(wait->wait, wait->done, HZ / 10);
 366         if (!wait->done)
 367                 return false;
 368         return true;
 369 }
 370
 371 static void rocker_wait_wake_up(struct rocker_wait *wait)
 372 {
 373         wait->done = true;
 374         wake_up(&wait->wait);
 375 }
 376
 377 static u32 rocker_msix_vector(struct rocker *rocker, unsigned int vector)
 378 {
 379         return rocker->msix_entries[vector].vector;
 380 }
 381
 382 static u32 rocker_msix_tx_vector(struct rocker_port *rocker_port)
 383 {
 384         return rocker_msix_vector(rocker_port->rocker,
 385                                   ROCKER_MSIX_VEC_TX(rocker_port->port_number));
 386 }
 387
 388 static u32 rocker_msix_rx_vector(struct rocker_port *rocker_port)
 389 {
 390         return rocker_msix_vector(rocker_port->rocker,
 391                                   ROCKER_MSIX_VEC_RX(rocker_port->port_number));
 392 }
 393
 394 #define rocker_write32(rocker, reg, val)        \
 395         writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 396 #define rocker_read32(rocker, reg)      \
 397         readl((rocker)->hw_addr + (ROCKER_ ## reg))
 398 #define rocker_write64(rocker, reg, val)        \
 399         writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 400 #define rocker_read64(rocker, reg)      \
 401         readq((rocker)->hw_addr + (ROCKER_ ## reg))
 402
 403 /*****************************
 404  * HW basic testing functions
 405  *****************************/
 406
 407 static int rocker_reg_test(struct rocker *rocker)
 408 {
 409         struct pci_dev *pdev = rocker->pdev;
 410         u64 test_reg;
 411         u64 rnd;
 412
 413         rnd = prandom_u32();
 414         rnd >>= 1;
 415         rocker_write32(rocker, TEST_REG, rnd);
 416         test_reg = rocker_read32(rocker, TEST_REG);
 417         if (test_reg != rnd * 2) {
 418                 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
 419                         test_reg, rnd * 2);
 420                 return -EIO;
 421         }
 422
 423         rnd = prandom_u32();
 424         rnd <<= 31;
 425         rnd |= prandom_u32();
 426         rocker_write64(rocker, TEST_REG64, rnd);
 427         test_reg = rocker_read64(rocker, TEST_REG64);
 428         if (test_reg != rnd * 2) {
 429                 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
 430                         test_reg, rnd * 2);
 431                 return -EIO;
 432         }
 433
 434         return 0;
 435 }
 436
 437 static int rocker_dma_test_one(struct rocker *rocker, struct rocker_wait *wait,
 438                                u32 test_type, dma_addr_t dma_handle,
 439                                unsigned char *buf, unsigned char *expect,
 440                                size_t size)
 441 {
 442         struct pci_dev *pdev = rocker->pdev;
 443         int i;
 444
 445         rocker_wait_reset(wait);
 446         rocker_write32(rocker, TEST_DMA_CTRL, test_type);
 447
 448         if (!rocker_wait_event_timeout(wait, HZ / 10)) {
 449                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 450                 return -EIO;
 451         }
 452
 453         for (i = 0; i < size; i++) {
 454                 if (buf[i] != expect[i]) {
 455                         dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
 456                                 buf[i], i, expect[i]);
 457                         return -EIO;
 458                 }
 459         }
 460         return 0;
 461 }
 462
 463 #define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
 464 #define ROCKER_TEST_DMA_FILL_PATTERN 0x96
 465
 466 static int rocker_dma_test_offset(struct rocker *rocker,
 467                                   struct rocker_wait *wait, int offset)
 468 {
 469         struct pci_dev *pdev = rocker->pdev;
 470         unsigned char *alloc;
 471         unsigned char *buf;
 472         unsigned char *expect;
 473         dma_addr_t dma_handle;
 474         int i;
 475         int err;
 476
 477         alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
 478                         GFP_KERNEL | GFP_DMA);
 479         if (!alloc)
 480                 return -ENOMEM;
 481         buf = alloc + offset;
 482         expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
 483
 484         dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
 485                                     PCI_DMA_BIDIRECTIONAL);
 486         if (pci_dma_mapping_error(pdev, dma_handle)) {
 487                 err = -EIO;
 488                 goto free_alloc;
 489         }
 490
 491         rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
 492         rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
 493
 494         memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
 495         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
 496                                   dma_handle, buf, expect,
 497                                   ROCKER_TEST_DMA_BUF_SIZE);
 498         if (err)
 499                 goto unmap;
 500
 501         memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
 502         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
 503                                   dma_handle, buf, expect,
 504                                   ROCKER_TEST_DMA_BUF_SIZE);
 505         if (err)
 506                 goto unmap;
 507
 508         prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
 509         for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
 510                 expect[i] = ~buf[i];
 511         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
 512                                   dma_handle, buf, expect,
 513                                   ROCKER_TEST_DMA_BUF_SIZE);
 514         if (err)
 515                 goto unmap;
 516
 517 unmap:
 518         pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
 519                          PCI_DMA_BIDIRECTIONAL);
 520 free_alloc:
 521         kfree(alloc);
 522
 523         return err;
 524 }
 525
 526 static int rocker_dma_test(struct rocker *rocker, struct rocker_wait *wait)
 527 {
 528         int i;
 529         int err;
 530
 531         for (i = 0; i < 8; i++) {
 532                 err = rocker_dma_test_offset(rocker, wait, i);
 533                 if (err)
 534                         return err;
 535         }
 536         return 0;
 537 }
 538
 539 static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
 540 {
 541         struct rocker_wait *wait = dev_id;
 542
 543         rocker_wait_wake_up(wait);
 544
 545         return IRQ_HANDLED;
 546 }
 547
 548 static int rocker_basic_hw_test(struct rocker *rocker)
 549 {
 550         struct pci_dev *pdev = rocker->pdev;
 551         struct rocker_wait wait;
 552         int err;
 553
 554         err = rocker_reg_test(rocker);
 555         if (err) {
 556                 dev_err(&pdev->dev, "reg test failed\n");
 557                 return err;
 558         }
 559
 560         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
 561                           rocker_test_irq_handler, 0,
 562                           rocker_driver_name, &wait);
 563         if (err) {
 564                 dev_err(&pdev->dev, "cannot assign test irq\n");
 565                 return err;
 566         }
 567
 568         rocker_wait_init(&wait);
 569         rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
 570
 571         if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
 572                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 573                 err = -EIO;
 574                 goto free_irq;
 575         }
 576
 577         err = rocker_dma_test(rocker, &wait);
 578         if (err)
 579                 dev_err(&pdev->dev, "dma test failed\n");
 580
 581 free_irq:
 582         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
 583         return err;
 584 }
 585
 586 /******
 587  * TLV
 588  ******/
 589
 590 #define ROCKER_TLV_ALIGNTO 8U
 591 #define ROCKER_TLV_ALIGN(len) \
 592         (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1))
 593 #define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv))
 594
 595 /*  <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) --->
 596  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
 597  * |             Header          | Pad |           Payload           | Pad |
 598  * |      (struct rocker_tlv)    | ing |                             | ing |
 599  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
 600  *  <--------------------------- tlv->len -------------------------->
 601  */
 602
 603 static struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv,
 604                                           int *remaining)
 605 {
 606         int totlen = ROCKER_TLV_ALIGN(tlv->len);
 607
 608         *remaining -= totlen;
 609         return (struct rocker_tlv *) ((char *) tlv + totlen);
 610 }
 611
 612 static int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining)
 613 {
 614         return remaining >= (int) ROCKER_TLV_HDRLEN &&
 615                tlv->len >= ROCKER_TLV_HDRLEN &&
 616                tlv->len <= remaining;
 617 }
 618
 619 #define rocker_tlv_for_each(pos, head, len, rem)        \
 620         for (pos = head, rem = len;                     \
 621              rocker_tlv_ok(pos, rem);                   \
 622              pos = rocker_tlv_next(pos, &(rem)))
 623
 624 #define rocker_tlv_for_each_nested(pos, tlv, rem)       \
 625         rocker_tlv_for_each(pos, rocker_tlv_data(tlv),  \
 626                             rocker_tlv_len(tlv), rem)
 627
 628 static int rocker_tlv_attr_size(int payload)
 629 {
 630         return ROCKER_TLV_HDRLEN + payload;
 631 }
 632
 633 static int rocker_tlv_total_size(int payload)
 634 {
 635         return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload));
 636 }
 637
 638 static int rocker_tlv_padlen(int payload)
 639 {
 640         return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload);
 641 }
 642
 643 static int rocker_tlv_type(const struct rocker_tlv *tlv)
 644 {
 645         return tlv->type;
 646 }
 647
 648 static void *rocker_tlv_data(const struct rocker_tlv *tlv)
 649 {
 650         return (char *) tlv + ROCKER_TLV_HDRLEN;
 651 }
 652
 653 static int rocker_tlv_len(const struct rocker_tlv *tlv)
 654 {
 655         return tlv->len - ROCKER_TLV_HDRLEN;
 656 }
 657
 658 static u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv)
 659 {
 660         return *(u8 *) rocker_tlv_data(tlv);
 661 }
 662
 663 static u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv)
 664 {
 665         return *(u16 *) rocker_tlv_data(tlv);
 666 }
 667
 668 static __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv)
 669 {
 670         return *(__be16 *) rocker_tlv_data(tlv);
 671 }
 672
 673 static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv)
 674 {
 675         return *(u32 *) rocker_tlv_data(tlv);
 676 }
 677
 678 static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv)
 679 {
 680         return *(u64 *) rocker_tlv_data(tlv);
 681 }
 682
 683 static void rocker_tlv_parse(struct rocker_tlv **tb, int maxtype,
 684                              const char *buf, int buf_len)
 685 {
 686         const struct rocker_tlv *tlv;
 687         const struct rocker_tlv *head = (const struct rocker_tlv *) buf;
 688         int rem;
 689
 690         memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1));
 691
 692         rocker_tlv_for_each(tlv, head, buf_len, rem) {
 693                 u32 type = rocker_tlv_type(tlv);
 694
 695                 if (type > 0 && type <= maxtype)
 696                         tb[type] = (struct rocker_tlv *) tlv;
 697         }
 698 }
 699
 700 static void rocker_tlv_parse_nested(struct rocker_tlv **tb, int maxtype,
 701                                     const struct rocker_tlv *tlv)
 702 {
 703         rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv),
 704                          rocker_tlv_len(tlv));
 705 }
 706
 707 static void rocker_tlv_parse_desc(struct rocker_tlv **tb, int maxtype,
 708                                   struct rocker_desc_info *desc_info)
 709 {
 710         rocker_tlv_parse(tb, maxtype, desc_info->data,
 711                          desc_info->desc->tlv_size);
 712 }
 713
 714 static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info)
 715 {
 716         return (struct rocker_tlv *) ((char *) desc_info->data +
 717                                                desc_info->tlv_size);
 718 }
 719
 720 static int rocker_tlv_put(struct rocker_desc_info *desc_info,
 721                           int attrtype, int attrlen, const void *data)
 722 {
 723         int tail_room = desc_info->data_size - desc_info->tlv_size;
 724         int total_size = rocker_tlv_total_size(attrlen);
 725         struct rocker_tlv *tlv;
 726
 727         if (unlikely(tail_room < total_size))
 728                 return -EMSGSIZE;
 729
 730         tlv = rocker_tlv_start(desc_info);
 731         desc_info->tlv_size += total_size;
 732         tlv->type = attrtype;
 733         tlv->len = rocker_tlv_attr_size(attrlen);
 734         memcpy(rocker_tlv_data(tlv), data, attrlen);
 735         memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen));
 736         return 0;
 737 }
 738
 739 static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info,
 740                              int attrtype, u8 value)
 741 {
 742         return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value);
 743 }
 744
 745 static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info,
 746                               int attrtype, u16 value)
 747 {
 748         return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value);
 749 }
 750
 751 static int rocker_tlv_put_be16(struct rocker_desc_info *desc_info,
 752                                int attrtype, __be16 value)
 753 {
 754         return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &value);
 755 }
 756
 757 static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info,
 758                               int attrtype, u32 value)
 759 {
 760         return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value);
 761 }
 762
 763 static int rocker_tlv_put_be32(struct rocker_desc_info *desc_info,
 764                                int attrtype, __be32 value)
 765 {
 766         return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &value);
 767 }
 768
 769 static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info,
 770                               int attrtype, u64 value)
 771 {
 772         return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value);
 773 }
 774
 775 static struct rocker_tlv *
 776 rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype)
 777 {
 778         struct rocker_tlv *start = rocker_tlv_start(desc_info);
 779
 780         if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0)
 781                 return NULL;
 782
 783         return start;
 784 }
 785
 786 static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info,
 787                                 struct rocker_tlv *start)
 788 {
 789         start->len = (char *) rocker_tlv_start(desc_info) - (char *) start;
 790 }
 791
 792 static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info,
 793                                    struct rocker_tlv *start)
 794 {
 795         desc_info->tlv_size = (char *) start - desc_info->data;
 796 }
 797
 798 /******************************************
 799  * DMA rings and descriptors manipulations
 800  ******************************************/
 801
 802 static u32 __pos_inc(u32 pos, size_t limit)
 803 {
 804         return ++pos == limit ? 0 : pos;
 805 }
 806
 807 static int rocker_desc_err(struct rocker_desc_info *desc_info)
 808 {
 809         int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN;
 810
 811         switch (err) {
 812         case ROCKER_OK:
 813                 return 0;
 814         case -ROCKER_ENOENT:
 815                 return -ENOENT;
 816         case -ROCKER_ENXIO:
 817                 return -ENXIO;
 818         case -ROCKER_ENOMEM:
 819                 return -ENOMEM;
 820         case -ROCKER_EEXIST:
 821                 return -EEXIST;
 822         case -ROCKER_EINVAL:
 823                 return -EINVAL;
 824         case -ROCKER_EMSGSIZE:
 825                 return -EMSGSIZE;
 826         case -ROCKER_ENOTSUP:
 827                 return -EOPNOTSUPP;
 828         case -ROCKER_ENOBUFS:
 829                 return -ENOBUFS;
 830         }
 831
 832         return -EINVAL;
 833 }
 834
 835 static void rocker_desc_gen_clear(struct rocker_desc_info *desc_info)
 836 {
 837         desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
 838 }
 839
 840 static bool rocker_desc_gen(struct rocker_desc_info *desc_info)
 841 {
 842         u32 comp_err = desc_info->desc->comp_err;
 843
 844         return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
 845 }
 846
 847 static void *rocker_desc_cookie_ptr_get(struct rocker_desc_info *desc_info)
 848 {
 849         return (void *)(uintptr_t)desc_info->desc->cookie;
 850 }
 851
 852 static void rocker_desc_cookie_ptr_set(struct rocker_desc_info *desc_info,
 853                                        void *ptr)
 854 {
 855         desc_info->desc->cookie = (uintptr_t) ptr;
 856 }
 857
 858 static struct rocker_desc_info *
 859 rocker_desc_head_get(struct rocker_dma_ring_info *info)
 860 {
 861         static struct rocker_desc_info *desc_info;
 862         u32 head = __pos_inc(info->head, info->size);
 863
 864         desc_info = &info->desc_info[info->head];
 865         if (head == info->tail)
 866                 return NULL; /* ring full */
 867         desc_info->tlv_size = 0;
 868         return desc_info;
 869 }
 870
 871 static void rocker_desc_commit(struct rocker_desc_info *desc_info)
 872 {
 873         desc_info->desc->buf_size = desc_info->data_size;
 874         desc_info->desc->tlv_size = desc_info->tlv_size;
 875 }
 876
 877 static void rocker_desc_head_set(struct rocker *rocker,
 878                                  struct rocker_dma_ring_info *info,
 879                                  struct rocker_desc_info *desc_info)
 880 {
 881         u32 head = __pos_inc(info->head, info->size);
 882
 883         BUG_ON(head == info->tail);
 884         rocker_desc_commit(desc_info);
 885         info->head = head;
 886         rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
 887 }
 888
 889 static struct rocker_desc_info *
 890 rocker_desc_tail_get(struct rocker_dma_ring_info *info)
 891 {
 892         static struct rocker_desc_info *desc_info;
 893
 894         if (info->tail == info->head)
 895                 return NULL; /* nothing to be done between head and tail */
 896         desc_info = &info->desc_info[info->tail];
 897         if (!rocker_desc_gen(desc_info))
 898                 return NULL; /* gen bit not set, desc is not ready yet */
 899         info->tail = __pos_inc(info->tail, info->size);
 900         desc_info->tlv_size = desc_info->desc->tlv_size;
 901         return desc_info;
 902 }
 903
 904 static void rocker_dma_ring_credits_set(struct rocker *rocker,
 905                                         struct rocker_dma_ring_info *info,
 906                                         u32 credits)
 907 {
 908         if (credits)
 909                 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
 910 }
 911
 912 static unsigned long rocker_dma_ring_size_fix(size_t size)
 913 {
 914         return max(ROCKER_DMA_SIZE_MIN,
 915                    min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
 916 }
 917
 918 static int rocker_dma_ring_create(struct rocker *rocker,
 919                                   unsigned int type,
 920                                   size_t size,
 921                                   struct rocker_dma_ring_info *info)
 922 {
 923         int i;
 924
 925         BUG_ON(size != rocker_dma_ring_size_fix(size));
 926         info->size = size;
 927         info->type = type;
 928         info->head = 0;
 929         info->tail = 0;
 930         info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
 931                                   GFP_KERNEL);
 932         if (!info->desc_info)
 933                 return -ENOMEM;
 934
 935         info->desc = pci_alloc_consistent(rocker->pdev,
 936                                           info->size * sizeof(*info->desc),
 937                                           &info->mapaddr);
 938         if (!info->desc) {
 939                 kfree(info->desc_info);
 940                 return -ENOMEM;
 941         }
 942
 943         for (i = 0; i < info->size; i++)
 944                 info->desc_info[i].desc = &info->desc[i];
 945
 946         rocker_write32(rocker, DMA_DESC_CTRL(info->type),
 947                        ROCKER_DMA_DESC_CTRL_RESET);
 948         rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
 949         rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
 950
 951         return 0;
 952 }
 953
 954 static void rocker_dma_ring_destroy(struct rocker *rocker,
 955                                     struct rocker_dma_ring_info *info)
 956 {
 957         rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
 958
 959         pci_free_consistent(rocker->pdev,
 960                             info->size * sizeof(struct rocker_desc),
 961                             info->desc, info->mapaddr);
 962         kfree(info->desc_info);
 963 }
 964
 965 static void rocker_dma_ring_pass_to_producer(struct rocker *rocker,
 966                                              struct rocker_dma_ring_info *info)
 967 {
 968         int i;
 969
 970         BUG_ON(info->head || info->tail);
 971
 972         /* When ring is consumer, we need to advance head for each desc.
 973          * That tells hw that the desc is ready to be used by it.
 974          */
 975         for (i = 0; i < info->size - 1; i++)
 976                 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
 977         rocker_desc_commit(&info->desc_info[i]);
 978 }
 979
 980 static int rocker_dma_ring_bufs_alloc(struct rocker *rocker,
 981                                       struct rocker_dma_ring_info *info,
 982                                       int direction, size_t buf_size)
 983 {
 984         struct pci_dev *pdev = rocker->pdev;
 985         int i;
 986         int err;
 987
 988         for (i = 0; i < info->size; i++) {
 989                 struct rocker_desc_info *desc_info = &info->desc_info[i];
 990                 struct rocker_desc *desc = &info->desc[i];
 991                 dma_addr_t dma_handle;
 992                 char *buf;
 993
 994                 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
 995                 if (!buf) {
 996                         err = -ENOMEM;
 997                         goto rollback;
 998                 }
 999
1000                 dma_handle = pci_map_single(pdev, buf, buf_size, direction);
1001                 if (pci_dma_mapping_error(pdev, dma_handle)) {
1002                         kfree(buf);
1003                         err = -EIO;
1004                         goto rollback;
1005                 }
1006
1007                 desc_info->data = buf;
1008                 desc_info->data_size = buf_size;
1009                 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
1010
1011                 desc->buf_addr = dma_handle;
1012                 desc->buf_size = buf_size;
1013         }
1014         return 0;
1015
1016 rollback:
1017         for (i--; i >= 0; i--) {
1018                 struct rocker_desc_info *desc_info = &info->desc_info[i];
1019
1020                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1021                                  desc_info->data_size, direction);
1022                 kfree(desc_info->data);
1023         }
1024         return err;
1025 }
1026
1027 static void rocker_dma_ring_bufs_free(struct rocker *rocker,
1028                                       struct rocker_dma_ring_info *info,
1029                                       int direction)
1030 {
1031         struct pci_dev *pdev = rocker->pdev;
1032         int i;
1033
1034         for (i = 0; i < info->size; i++) {
1035                 struct rocker_desc_info *desc_info = &info->desc_info[i];
1036                 struct rocker_desc *desc = &info->desc[i];
1037
1038                 desc->buf_addr = 0;
1039                 desc->buf_size = 0;
1040                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1041                                  desc_info->data_size, direction);
1042                 kfree(desc_info->data);
1043         }
1044 }
1045
1046 static int rocker_dma_rings_init(struct rocker *rocker)
1047 {
1048         struct pci_dev *pdev = rocker->pdev;
1049         int err;
1050
1051         err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
1052                                      ROCKER_DMA_CMD_DEFAULT_SIZE,
1053                                      &rocker->cmd_ring);
1054         if (err) {
1055                 dev_err(&pdev->dev, "failed to create command dma ring\n");
1056                 return err;
1057         }
1058
1059         spin_lock_init(&rocker->cmd_ring_lock);
1060
1061         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
1062                                          PCI_DMA_BIDIRECTIONAL, PAGE_SIZE);
1063         if (err) {
1064                 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
1065                 goto err_dma_cmd_ring_bufs_alloc;
1066         }
1067
1068         err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
1069                                      ROCKER_DMA_EVENT_DEFAULT_SIZE,
1070                                      &rocker->event_ring);
1071         if (err) {
1072                 dev_err(&pdev->dev, "failed to create event dma ring\n");
1073                 goto err_dma_event_ring_create;
1074         }
1075
1076         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
1077                                          PCI_DMA_FROMDEVICE, PAGE_SIZE);
1078         if (err) {
1079                 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
1080                 goto err_dma_event_ring_bufs_alloc;
1081         }
1082         rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
1083         return 0;
1084
1085 err_dma_event_ring_bufs_alloc:
1086         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1087 err_dma_event_ring_create:
1088         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1089                                   PCI_DMA_BIDIRECTIONAL);
1090 err_dma_cmd_ring_bufs_alloc:
1091         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1092         return err;
1093 }
1094
1095 static void rocker_dma_rings_fini(struct rocker *rocker)
1096 {
1097         rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
1098                                   PCI_DMA_BIDIRECTIONAL);
1099         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1100         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1101                                   PCI_DMA_BIDIRECTIONAL);
1102         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1103 }
1104
1105 static int rocker_dma_rx_ring_skb_map(struct rocker *rocker,
1106                                       struct rocker_port *rocker_port,
1107                                       struct rocker_desc_info *desc_info,
1108                                       struct sk_buff *skb, size_t buf_len)
1109 {
1110         struct pci_dev *pdev = rocker->pdev;
1111         dma_addr_t dma_handle;
1112
1113         dma_handle = pci_map_single(pdev, skb->data, buf_len,
1114                                     PCI_DMA_FROMDEVICE);
1115         if (pci_dma_mapping_error(pdev, dma_handle))
1116                 return -EIO;
1117         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
1118                 goto tlv_put_failure;
1119         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
1120                 goto tlv_put_failure;
1121         return 0;
1122
1123 tlv_put_failure:
1124         pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
1125         desc_info->tlv_size = 0;
1126         return -EMSGSIZE;
1127 }
1128
1129 static size_t rocker_port_rx_buf_len(struct rocker_port *rocker_port)
1130 {
1131         return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1132 }
1133
1134 static int rocker_dma_rx_ring_skb_alloc(struct rocker *rocker,
1135                                         struct rocker_port *rocker_port,
1136                                         struct rocker_desc_info *desc_info)
1137 {
1138         struct net_device *dev = rocker_port->dev;
1139         struct sk_buff *skb;
1140         size_t buf_len = rocker_port_rx_buf_len(rocker_port);
1141         int err;
1142
1143         /* Ensure that hw will see tlv_size zero in case of an error.
1144          * That tells hw to use another descriptor.
1145          */
1146         rocker_desc_cookie_ptr_set(desc_info, NULL);
1147         desc_info->tlv_size = 0;
1148
1149         skb = netdev_alloc_skb_ip_align(dev, buf_len);
1150         if (!skb)
1151                 return -ENOMEM;
1152         err = rocker_dma_rx_ring_skb_map(rocker, rocker_port, desc_info,
1153                                          skb, buf_len);
1154         if (err) {
1155                 dev_kfree_skb_any(skb);
1156                 return err;
1157         }
1158         rocker_desc_cookie_ptr_set(desc_info, skb);
1159         return 0;
1160 }
1161
1162 static void rocker_dma_rx_ring_skb_unmap(struct rocker *rocker,
1163                                          struct rocker_tlv **attrs)
1164 {
1165         struct pci_dev *pdev = rocker->pdev;
1166         dma_addr_t dma_handle;
1167         size_t len;
1168
1169         if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
1170             !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
1171                 return;
1172         dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
1173         len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
1174         pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
1175 }
1176
1177 static void rocker_dma_rx_ring_skb_free(struct rocker *rocker,
1178                                         struct rocker_desc_info *desc_info)
1179 {
1180         struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
1181         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
1182
1183         if (!skb)
1184                 return;
1185         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
1186         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
1187         dev_kfree_skb_any(skb);
1188 }
1189
1190 static int rocker_dma_rx_ring_skbs_alloc(struct rocker *rocker,
1191                                          struct rocker_port *rocker_port)
1192 {
1193         struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1194         int i;
1195         int err;
1196
1197         for (i = 0; i < rx_ring->size; i++) {
1198                 err = rocker_dma_rx_ring_skb_alloc(rocker, rocker_port,
1199                                                    &rx_ring->desc_info[i]);
1200                 if (err)
1201                         goto rollback;
1202         }
1203         return 0;
1204
1205 rollback:
1206         for (i--; i >= 0; i--)
1207                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1208         return err;
1209 }
1210
1211 static void rocker_dma_rx_ring_skbs_free(struct rocker *rocker,
1212                                          struct rocker_port *rocker_port)
1213 {
1214         struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1215         int i;
1216
1217         for (i = 0; i < rx_ring->size; i++)
1218                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1219 }
1220
1221 static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
1222 {
1223         struct rocker *rocker = rocker_port->rocker;
1224         int err;
1225
1226         err = rocker_dma_ring_create(rocker,
1227                                      ROCKER_DMA_TX(rocker_port->port_number),
1228                                      ROCKER_DMA_TX_DEFAULT_SIZE,
1229                                      &rocker_port->tx_ring);
1230         if (err) {
1231                 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
1232                 return err;
1233         }
1234
1235         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
1236                                          PCI_DMA_TODEVICE,
1237                                          ROCKER_DMA_TX_DESC_SIZE);
1238         if (err) {
1239                 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
1240                 goto err_dma_tx_ring_bufs_alloc;
1241         }
1242
1243         err = rocker_dma_ring_create(rocker,
1244                                      ROCKER_DMA_RX(rocker_port->port_number),
1245                                      ROCKER_DMA_RX_DEFAULT_SIZE,
1246                                      &rocker_port->rx_ring);
1247         if (err) {
1248                 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
1249                 goto err_dma_rx_ring_create;
1250         }
1251
1252         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
1253                                          PCI_DMA_BIDIRECTIONAL,
1254                                          ROCKER_DMA_RX_DESC_SIZE);
1255         if (err) {
1256                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
1257                 goto err_dma_rx_ring_bufs_alloc;
1258         }
1259
1260         err = rocker_dma_rx_ring_skbs_alloc(rocker, rocker_port);
1261         if (err) {
1262                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
1263                 goto err_dma_rx_ring_skbs_alloc;
1264         }
1265         rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
1266
1267         return 0;
1268
1269 err_dma_rx_ring_skbs_alloc:
1270         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1271                                   PCI_DMA_BIDIRECTIONAL);
1272 err_dma_rx_ring_bufs_alloc:
1273         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1274 err_dma_rx_ring_create:
1275         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1276                                   PCI_DMA_TODEVICE);
1277 err_dma_tx_ring_bufs_alloc:
1278         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1279         return err;
1280 }
1281
1282 static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
1283 {
1284         struct rocker *rocker = rocker_port->rocker;
1285
1286         rocker_dma_rx_ring_skbs_free(rocker, rocker_port);
1287         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1288                                   PCI_DMA_BIDIRECTIONAL);
1289         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1290         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1291                                   PCI_DMA_TODEVICE);
1292         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1293 }
1294
1295 static void rocker_port_set_enable(struct rocker_port *rocker_port, bool enable)
1296 {
1297         u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
1298
1299         if (enable)
1300                 val |= 1ULL << rocker_port->pport;
1301         else
1302                 val &= ~(1ULL << rocker_port->pport);
1303         rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
1304 }
1305
1306 /********************************
1307  * Interrupt handler and helpers
1308  ********************************/
1309
1310 static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
1311 {
1312         struct rocker *rocker = dev_id;
1313         struct rocker_desc_info *desc_info;
1314         struct rocker_wait *wait;
1315         u32 credits = 0;
1316
1317         spin_lock(&rocker->cmd_ring_lock);
1318         while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
1319                 wait = rocker_desc_cookie_ptr_get(desc_info);
1320                 if (wait->nowait) {
1321                         rocker_desc_gen_clear(desc_info);
1322                         rocker_wait_destroy(wait);
1323                 } else {
1324                         rocker_wait_wake_up(wait);
1325                 }
1326                 credits++;
1327         }
1328         spin_unlock(&rocker->cmd_ring_lock);
1329         rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
1330
1331         return IRQ_HANDLED;
1332 }
1333
1334 static void rocker_port_link_up(struct rocker_port *rocker_port)
1335 {
1336         netif_carrier_on(rocker_port->dev);
1337         netdev_info(rocker_port->dev, "Link is up\n");
1338 }
1339
1340 static void rocker_port_link_down(struct rocker_port *rocker_port)
1341 {
1342         netif_carrier_off(rocker_port->dev);
1343         netdev_info(rocker_port->dev, "Link is down\n");
1344 }
1345
1346 static int rocker_event_link_change(struct rocker *rocker,
1347                                     const struct rocker_tlv *info)
1348 {
1349         struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
1350         unsigned int port_number;
1351         bool link_up;
1352         struct rocker_port *rocker_port;
1353
1354         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
1355         if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] ||
1356             !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
1357                 return -EIO;
1358         port_number =
1359                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1;
1360         link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
1361
1362         if (port_number >= rocker->port_count)
1363                 return -EINVAL;
1364
1365         rocker_port = rocker->ports[port_number];
1366         if (netif_carrier_ok(rocker_port->dev) != link_up) {
1367                 if (link_up)
1368                         rocker_port_link_up(rocker_port);
1369                 else
1370                         rocker_port_link_down(rocker_port);
1371         }
1372
1373         return 0;
1374 }
1375
1376 #define ROCKER_OP_FLAG_REMOVE           BIT(0)
1377 #define ROCKER_OP_FLAG_NOWAIT           BIT(1)
1378 #define ROCKER_OP_FLAG_LEARNED          BIT(2)
1379 #define ROCKER_OP_FLAG_REFRESH          BIT(3)
1380
1381 static int rocker_port_fdb(struct rocker_port *rocker_port,
1382                            const unsigned char *addr,
1383                            __be16 vlan_id, int flags);
1384
1385 static int rocker_event_mac_vlan_seen(struct rocker *rocker,
1386                                       const struct rocker_tlv *info)
1387 {
1388         struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
1389         unsigned int port_number;
1390         struct rocker_port *rocker_port;
1391         unsigned char *addr;
1392         int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_LEARNED;
1393         __be16 vlan_id;
1394
1395         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
1396         if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] ||
1397             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
1398             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
1399                 return -EIO;
1400         port_number =
1401                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1;
1402         addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
1403         vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
1404
1405         if (port_number >= rocker->port_count)
1406                 return -EINVAL;
1407
1408         rocker_port = rocker->ports[port_number];
1409
1410         if (rocker_port->stp_state != BR_STATE_LEARNING &&
1411             rocker_port->stp_state != BR_STATE_FORWARDING)
1412                 return 0;
1413
1414         return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
1415 }
1416
1417 static int rocker_event_process(struct rocker *rocker,
1418                                 struct rocker_desc_info *desc_info)
1419 {
1420         struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
1421         struct rocker_tlv *info;
1422         u16 type;
1423
1424         rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
1425         if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
1426             !attrs[ROCKER_TLV_EVENT_INFO])
1427                 return -EIO;
1428
1429         type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
1430         info = attrs[ROCKER_TLV_EVENT_INFO];
1431
1432         switch (type) {
1433         case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
1434                 return rocker_event_link_change(rocker, info);
1435         case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
1436                 return rocker_event_mac_vlan_seen(rocker, info);
1437         }
1438
1439         return -EOPNOTSUPP;
1440 }
1441
1442 static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
1443 {
1444         struct rocker *rocker = dev_id;
1445         struct pci_dev *pdev = rocker->pdev;
1446         struct rocker_desc_info *desc_info;
1447         u32 credits = 0;
1448         int err;
1449
1450         while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1451                 err = rocker_desc_err(desc_info);
1452                 if (err) {
1453                         dev_err(&pdev->dev, "event desc received with err %d\n",
1454                                 err);
1455                 } else {
1456                         err = rocker_event_process(rocker, desc_info);
1457                         if (err)
1458                                 dev_err(&pdev->dev, "event processing failed with err %d\n",
1459                                         err);
1460                 }
1461                 rocker_desc_gen_clear(desc_info);
1462                 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1463                 credits++;
1464         }
1465         rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1466
1467         return IRQ_HANDLED;
1468 }
1469
1470 static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1471 {
1472         struct rocker_port *rocker_port = dev_id;
1473
1474         napi_schedule(&rocker_port->napi_tx);
1475         return IRQ_HANDLED;
1476 }
1477
1478 static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1479 {
1480         struct rocker_port *rocker_port = dev_id;
1481
1482         napi_schedule(&rocker_port->napi_rx);
1483         return IRQ_HANDLED;
1484 }
1485
1486 /********************
1487  * Command interface
1488  ********************/
1489
1490 typedef int (*rocker_cmd_cb_t)(struct rocker *rocker,
1491                                struct rocker_port *rocker_port,
1492                                struct rocker_desc_info *desc_info,
1493                                void *priv);
1494
1495 static int rocker_cmd_exec(struct rocker *rocker,
1496                            struct rocker_port *rocker_port,
1497                            rocker_cmd_cb_t prepare, void *prepare_priv,
1498                            rocker_cmd_cb_t process, void *process_priv,
1499                            bool nowait)
1500 {
1501         struct rocker_desc_info *desc_info;
1502         struct rocker_wait *wait;
1503         unsigned long flags;
1504         int err;
1505
1506         wait = rocker_wait_create(nowait ? GFP_ATOMIC : GFP_KERNEL);
1507         if (!wait)
1508                 return -ENOMEM;
1509         wait->nowait = nowait;
1510
1511         spin_lock_irqsave(&rocker->cmd_ring_lock, flags);
1512         desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1513         if (!desc_info) {
1514                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1515                 err = -EAGAIN;
1516                 goto out;
1517         }
1518         err = prepare(rocker, rocker_port, desc_info, prepare_priv);
1519         if (err) {
1520                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1521                 goto out;
1522         }
1523         rocker_desc_cookie_ptr_set(desc_info, wait);
1524         rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1525         spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1526
1527         if (nowait)
1528                 return 0;
1529
1530         if (!rocker_wait_event_timeout(wait, HZ / 10))
1531                 return -EIO;
1532
1533         err = rocker_desc_err(desc_info);
1534         if (err)
1535                 return err;
1536
1537         if (process)
1538                 err = process(rocker, rocker_port, desc_info, process_priv);
1539
1540         rocker_desc_gen_clear(desc_info);
1541 out:
1542         rocker_wait_destroy(wait);
1543         return err;
1544 }
1545
1546 static int
1547 rocker_cmd_get_port_settings_prep(struct rocker *rocker,
1548                                   struct rocker_port *rocker_port,
1549                                   struct rocker_desc_info *desc_info,
1550                                   void *priv)
1551 {
1552         struct rocker_tlv *cmd_info;
1553
1554         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1555                                ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1556                 return -EMSGSIZE;
1557         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1558         if (!cmd_info)
1559                 return -EMSGSIZE;
1560         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1561                                rocker_port->pport))
1562                 return -EMSGSIZE;
1563         rocker_tlv_nest_end(desc_info, cmd_info);
1564         return 0;
1565 }
1566
1567 static int
1568 rocker_cmd_get_port_settings_ethtool_proc(struct rocker *rocker,
1569                                           struct rocker_port *rocker_port,
1570                                           struct rocker_desc_info *desc_info,
1571                                           void *priv)
1572 {
1573         struct ethtool_cmd *ecmd = priv;
1574         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1575         struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1576         u32 speed;
1577         u8 duplex;
1578         u8 autoneg;
1579
1580         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1581         if (!attrs[ROCKER_TLV_CMD_INFO])
1582                 return -EIO;
1583
1584         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1585                                 attrs[ROCKER_TLV_CMD_INFO]);
1586         if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1587             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1588             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1589                 return -EIO;
1590
1591         speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1592         duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1593         autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1594
1595         ecmd->transceiver = XCVR_INTERNAL;
1596         ecmd->supported = SUPPORTED_TP;
1597         ecmd->phy_address = 0xff;
1598         ecmd->port = PORT_TP;
1599         ethtool_cmd_speed_set(ecmd, speed);
1600         ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1601         ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1602
1603         return 0;
1604 }
1605
1606 static int
1607 rocker_cmd_get_port_settings_macaddr_proc(struct rocker *rocker,
1608                                           struct rocker_port *rocker_port,
1609                                           struct rocker_desc_info *desc_info,
1610                                           void *priv)
1611 {
1612         unsigned char *macaddr = priv;
1613         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1614         struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1615         struct rocker_tlv *attr;
1616
1617         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1618         if (!attrs[ROCKER_TLV_CMD_INFO])
1619                 return -EIO;
1620
1621         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1622                                 attrs[ROCKER_TLV_CMD_INFO]);
1623         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1624         if (!attr)
1625                 return -EIO;
1626
1627         if (rocker_tlv_len(attr) != ETH_ALEN)
1628                 return -EINVAL;
1629
1630         ether_addr_copy(macaddr, rocker_tlv_data(attr));
1631         return 0;
1632 }
1633
1634 struct port_name {
1635         char *buf;
1636         size_t len;
1637 };
1638
1639 static int
1640 rocker_cmd_get_port_settings_phys_name_proc(struct rocker *rocker,
1641                                             struct rocker_port *rocker_port,
1642                                             struct rocker_desc_info *desc_info,
1643                                             void *priv)
1644 {
1645         struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1646         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1647         struct port_name *name = priv;
1648         struct rocker_tlv *attr;
1649         size_t i, j, len;
1650         char *str;
1651
1652         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1653         if (!attrs[ROCKER_TLV_CMD_INFO])
1654                 return -EIO;
1655
1656         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1657                                 attrs[ROCKER_TLV_CMD_INFO]);
1658         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME];
1659         if (!attr)
1660                 return -EIO;
1661
1662         len = min_t(size_t, rocker_tlv_len(attr), name->len);
1663         str = rocker_tlv_data(attr);
1664
1665         /* make sure name only contains alphanumeric characters */
1666         for (i = j = 0; i < len; ++i) {
1667                 if (isalnum(str[i])) {
1668                         name->buf[j] = str[i];
1669                         j++;
1670                 }
1671         }
1672
1673         if (j == 0)
1674                 return -EIO;
1675
1676         name->buf[j] = '\0';
1677
1678         return 0;
1679 }
1680
1681 static int
1682 rocker_cmd_set_port_settings_ethtool_prep(struct rocker *rocker,
1683                                           struct rocker_port *rocker_port,
1684                                           struct rocker_desc_info *desc_info,
1685                                           void *priv)
1686 {
1687         struct ethtool_cmd *ecmd = priv;
1688         struct rocker_tlv *cmd_info;
1689
1690         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1691                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1692                 return -EMSGSIZE;
1693         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1694         if (!cmd_info)
1695                 return -EMSGSIZE;
1696         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1697                                rocker_port->pport))
1698                 return -EMSGSIZE;
1699         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1700                                ethtool_cmd_speed(ecmd)))
1701                 return -EMSGSIZE;
1702         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1703                               ecmd->duplex))
1704                 return -EMSGSIZE;
1705         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1706                               ecmd->autoneg))
1707                 return -EMSGSIZE;
1708         rocker_tlv_nest_end(desc_info, cmd_info);
1709         return 0;
1710 }
1711
1712 static int
1713 rocker_cmd_set_port_settings_macaddr_prep(struct rocker *rocker,
1714                                           struct rocker_port *rocker_port,
1715                                           struct rocker_desc_info *desc_info,
1716                                           void *priv)
1717 {
1718         unsigned char *macaddr = priv;
1719         struct rocker_tlv *cmd_info;
1720
1721         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1722                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1723                 return -EMSGSIZE;
1724         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1725         if (!cmd_info)
1726                 return -EMSGSIZE;
1727         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1728                                rocker_port->pport))
1729                 return -EMSGSIZE;
1730         if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1731                            ETH_ALEN, macaddr))
1732                 return -EMSGSIZE;
1733         rocker_tlv_nest_end(desc_info, cmd_info);
1734         return 0;
1735 }
1736
1737 static int
1738 rocker_cmd_set_port_learning_prep(struct rocker *rocker,
1739                                   struct rocker_port *rocker_port,
1740                                   struct rocker_desc_info *desc_info,
1741                                   void *priv)
1742 {
1743         struct rocker_tlv *cmd_info;
1744
1745         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1746                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1747                 return -EMSGSIZE;
1748         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1749         if (!cmd_info)
1750                 return -EMSGSIZE;
1751         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1752                                rocker_port->pport))
1753                 return -EMSGSIZE;
1754         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1755                               !!(rocker_port->brport_flags & BR_LEARNING)))
1756                 return -EMSGSIZE;
1757         rocker_tlv_nest_end(desc_info, cmd_info);
1758         return 0;
1759 }
1760
1761 static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1762                                                 struct ethtool_cmd *ecmd)
1763 {
1764         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1765                                rocker_cmd_get_port_settings_prep, NULL,
1766                                rocker_cmd_get_port_settings_ethtool_proc,
1767                                ecmd, false);
1768 }
1769
1770 static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1771                                                 unsigned char *macaddr)
1772 {
1773         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1774                                rocker_cmd_get_port_settings_prep, NULL,
1775                                rocker_cmd_get_port_settings_macaddr_proc,
1776                                macaddr, false);
1777 }
1778
1779 static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1780                                                 struct ethtool_cmd *ecmd)
1781 {
1782         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1783                                rocker_cmd_set_port_settings_ethtool_prep,
1784                                ecmd, NULL, NULL, false);
1785 }
1786
1787 static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1788                                                 unsigned char *macaddr)
1789 {
1790         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1791                                rocker_cmd_set_port_settings_macaddr_prep,
1792                                macaddr, NULL, NULL, false);
1793 }
1794
1795 static int rocker_port_set_learning(struct rocker_port *rocker_port)
1796 {
1797         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1798                                rocker_cmd_set_port_learning_prep,
1799                                NULL, NULL, NULL, false);
1800 }
1801
1802 static int rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
1803                                            struct rocker_flow_tbl_entry *entry)
1804 {
1805         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1806                                entry->key.ig_port.in_pport))
1807                 return -EMSGSIZE;
1808         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1809                                entry->key.ig_port.in_pport_mask))
1810                 return -EMSGSIZE;
1811         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1812                                entry->key.ig_port.goto_tbl))
1813                 return -EMSGSIZE;
1814
1815         return 0;
1816 }
1817
1818 static int rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
1819                                         struct rocker_flow_tbl_entry *entry)
1820 {
1821         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1822                                entry->key.vlan.in_pport))
1823                 return -EMSGSIZE;
1824         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1825                                 entry->key.vlan.vlan_id))
1826                 return -EMSGSIZE;
1827         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1828                                 entry->key.vlan.vlan_id_mask))
1829                 return -EMSGSIZE;
1830         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1831                                entry->key.vlan.goto_tbl))
1832                 return -EMSGSIZE;
1833         if (entry->key.vlan.untagged &&
1834             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
1835                                 entry->key.vlan.new_vlan_id))
1836                 return -EMSGSIZE;
1837
1838         return 0;
1839 }
1840
1841 static int rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
1842                                             struct rocker_flow_tbl_entry *entry)
1843 {
1844         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1845                                entry->key.term_mac.in_pport))
1846                 return -EMSGSIZE;
1847         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1848                                entry->key.term_mac.in_pport_mask))
1849                 return -EMSGSIZE;
1850         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1851                                 entry->key.term_mac.eth_type))
1852                 return -EMSGSIZE;
1853         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1854                            ETH_ALEN, entry->key.term_mac.eth_dst))
1855                 return -EMSGSIZE;
1856         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1857                            ETH_ALEN, entry->key.term_mac.eth_dst_mask))
1858                 return -EMSGSIZE;
1859         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1860                                 entry->key.term_mac.vlan_id))
1861                 return -EMSGSIZE;
1862         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1863                                 entry->key.term_mac.vlan_id_mask))
1864                 return -EMSGSIZE;
1865         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1866                                entry->key.term_mac.goto_tbl))
1867                 return -EMSGSIZE;
1868         if (entry->key.term_mac.copy_to_cpu &&
1869             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1870                               entry->key.term_mac.copy_to_cpu))
1871                 return -EMSGSIZE;
1872
1873         return 0;
1874 }
1875
1876 static int
1877 rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
1878                                       struct rocker_flow_tbl_entry *entry)
1879 {
1880         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1881                                 entry->key.ucast_routing.eth_type))
1882                 return -EMSGSIZE;
1883         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
1884                                 entry->key.ucast_routing.dst4))
1885                 return -EMSGSIZE;
1886         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
1887                                 entry->key.ucast_routing.dst4_mask))
1888                 return -EMSGSIZE;
1889         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1890                                entry->key.ucast_routing.goto_tbl))
1891                 return -EMSGSIZE;
1892         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1893                                entry->key.ucast_routing.group_id))
1894                 return -EMSGSIZE;
1895
1896         return 0;
1897 }
1898
1899 static int rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
1900                                           struct rocker_flow_tbl_entry *entry)
1901 {
1902         if (entry->key.bridge.has_eth_dst &&
1903             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1904                            ETH_ALEN, entry->key.bridge.eth_dst))
1905                 return -EMSGSIZE;
1906         if (entry->key.bridge.has_eth_dst_mask &&
1907             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1908                            ETH_ALEN, entry->key.bridge.eth_dst_mask))
1909                 return -EMSGSIZE;
1910         if (entry->key.bridge.vlan_id &&
1911             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1912                                 entry->key.bridge.vlan_id))
1913                 return -EMSGSIZE;
1914         if (entry->key.bridge.tunnel_id &&
1915             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
1916                                entry->key.bridge.tunnel_id))
1917                 return -EMSGSIZE;
1918         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1919                                entry->key.bridge.goto_tbl))
1920                 return -EMSGSIZE;
1921         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1922                                entry->key.bridge.group_id))
1923                 return -EMSGSIZE;
1924         if (entry->key.bridge.copy_to_cpu &&
1925             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1926                               entry->key.bridge.copy_to_cpu))
1927                 return -EMSGSIZE;
1928
1929         return 0;
1930 }
1931
1932 static int rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
1933                                        struct rocker_flow_tbl_entry *entry)
1934 {
1935         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1936                                entry->key.acl.in_pport))
1937                 return -EMSGSIZE;
1938         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1939                                entry->key.acl.in_pport_mask))
1940                 return -EMSGSIZE;
1941         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
1942                            ETH_ALEN, entry->key.acl.eth_src))
1943                 return -EMSGSIZE;
1944         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
1945                            ETH_ALEN, entry->key.acl.eth_src_mask))
1946                 return -EMSGSIZE;
1947         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1948                            ETH_ALEN, entry->key.acl.eth_dst))
1949                 return -EMSGSIZE;
1950         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1951                            ETH_ALEN, entry->key.acl.eth_dst_mask))
1952                 return -EMSGSIZE;
1953         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1954                                 entry->key.acl.eth_type))
1955                 return -EMSGSIZE;
1956         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1957                                 entry->key.acl.vlan_id))
1958                 return -EMSGSIZE;
1959         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1960                                 entry->key.acl.vlan_id_mask))
1961                 return -EMSGSIZE;
1962
1963         switch (ntohs(entry->key.acl.eth_type)) {
1964         case ETH_P_IP:
1965         case ETH_P_IPV6:
1966                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
1967                                       entry->key.acl.ip_proto))
1968                         return -EMSGSIZE;
1969                 if (rocker_tlv_put_u8(desc_info,
1970                                       ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
1971                                       entry->key.acl.ip_proto_mask))
1972                         return -EMSGSIZE;
1973                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
1974                                       entry->key.acl.ip_tos & 0x3f))
1975                         return -EMSGSIZE;
1976                 if (rocker_tlv_put_u8(desc_info,
1977                                       ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
1978                                       entry->key.acl.ip_tos_mask & 0x3f))
1979                         return -EMSGSIZE;
1980                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
1981                                       (entry->key.acl.ip_tos & 0xc0) >> 6))
1982                         return -EMSGSIZE;
1983                 if (rocker_tlv_put_u8(desc_info,
1984                                       ROCKER_TLV_OF_DPA_IP_ECN_MASK,
1985                                       (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
1986                         return -EMSGSIZE;
1987                 break;
1988         }
1989
1990         if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
1991             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1992                                entry->key.acl.group_id))
1993                 return -EMSGSIZE;
1994
1995         return 0;
1996 }
1997
1998 static int rocker_cmd_flow_tbl_add(struct rocker *rocker,
1999                                    struct rocker_port *rocker_port,
2000                                    struct rocker_desc_info *desc_info,
2001                                    void *priv)
2002 {
2003         struct rocker_flow_tbl_entry *entry = priv;
2004         struct rocker_tlv *cmd_info;
2005         int err = 0;
2006
2007         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2008                 return -EMSGSIZE;
2009         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2010         if (!cmd_info)
2011                 return -EMSGSIZE;
2012         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
2013                                entry->key.tbl_id))
2014                 return -EMSGSIZE;
2015         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
2016                                entry->key.priority))
2017                 return -EMSGSIZE;
2018         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
2019                 return -EMSGSIZE;
2020         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2021                                entry->cookie))
2022                 return -EMSGSIZE;
2023
2024         switch (entry->key.tbl_id) {
2025         case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
2026                 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
2027                 break;
2028         case ROCKER_OF_DPA_TABLE_ID_VLAN:
2029                 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
2030                 break;
2031         case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
2032                 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
2033                 break;
2034         case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
2035                 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
2036                 break;
2037         case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
2038                 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
2039                 break;
2040         case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
2041                 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
2042                 break;
2043         default:
2044                 err = -ENOTSUPP;
2045                 break;
2046         }
2047
2048         if (err)
2049                 return err;
2050
2051         rocker_tlv_nest_end(desc_info, cmd_info);
2052
2053         return 0;
2054 }
2055
2056 static int rocker_cmd_flow_tbl_del(struct rocker *rocker,
2057                                    struct rocker_port *rocker_port,
2058                                    struct rocker_desc_info *desc_info,
2059                                    void *priv)
2060 {
2061         const struct rocker_flow_tbl_entry *entry = priv;
2062         struct rocker_tlv *cmd_info;
2063
2064         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2065                 return -EMSGSIZE;
2066         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2067         if (!cmd_info)
2068                 return -EMSGSIZE;
2069         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2070                                entry->cookie))
2071                 return -EMSGSIZE;
2072         rocker_tlv_nest_end(desc_info, cmd_info);
2073
2074         return 0;
2075 }
2076
2077 static int
2078 rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
2079                                       struct rocker_group_tbl_entry *entry)
2080 {
2081         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT,
2082                                ROCKER_GROUP_PORT_GET(entry->group_id)))
2083                 return -EMSGSIZE;
2084         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
2085                               entry->l2_interface.pop_vlan))
2086                 return -EMSGSIZE;
2087
2088         return 0;
2089 }
2090
2091 static int
2092 rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
2093                                     struct rocker_group_tbl_entry *entry)
2094 {
2095         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2096                                entry->l2_rewrite.group_id))
2097                 return -EMSGSIZE;
2098         if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
2099             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2100                            ETH_ALEN, entry->l2_rewrite.eth_src))
2101                 return -EMSGSIZE;
2102         if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
2103             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2104                            ETH_ALEN, entry->l2_rewrite.eth_dst))
2105                 return -EMSGSIZE;
2106         if (entry->l2_rewrite.vlan_id &&
2107             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2108                                 entry->l2_rewrite.vlan_id))
2109                 return -EMSGSIZE;
2110
2111         return 0;
2112 }
2113
2114 static int
2115 rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
2116                                    struct rocker_group_tbl_entry *entry)
2117 {
2118         int i;
2119         struct rocker_tlv *group_ids;
2120
2121         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
2122                                entry->group_count))
2123                 return -EMSGSIZE;
2124
2125         group_ids = rocker_tlv_nest_start(desc_info,
2126                                           ROCKER_TLV_OF_DPA_GROUP_IDS);
2127         if (!group_ids)
2128                 return -EMSGSIZE;
2129
2130         for (i = 0; i < entry->group_count; i++)
2131                 /* Note TLV array is 1-based */
2132                 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
2133                         return -EMSGSIZE;
2134
2135         rocker_tlv_nest_end(desc_info, group_ids);
2136
2137         return 0;
2138 }
2139
2140 static int
2141 rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
2142                                     struct rocker_group_tbl_entry *entry)
2143 {
2144         if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
2145             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2146                            ETH_ALEN, entry->l3_unicast.eth_src))
2147                 return -EMSGSIZE;
2148         if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
2149             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2150                            ETH_ALEN, entry->l3_unicast.eth_dst))
2151                 return -EMSGSIZE;
2152         if (entry->l3_unicast.vlan_id &&
2153             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2154                                 entry->l3_unicast.vlan_id))
2155                 return -EMSGSIZE;
2156         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
2157                               entry->l3_unicast.ttl_check))
2158                 return -EMSGSIZE;
2159         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2160                                entry->l3_unicast.group_id))
2161                 return -EMSGSIZE;
2162
2163         return 0;
2164 }
2165
2166 static int rocker_cmd_group_tbl_add(struct rocker *rocker,
2167                                     struct rocker_port *rocker_port,
2168                                     struct rocker_desc_info *desc_info,
2169                                     void *priv)
2170 {
2171         struct rocker_group_tbl_entry *entry = priv;
2172         struct rocker_tlv *cmd_info;
2173         int err = 0;
2174
2175         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2176                 return -EMSGSIZE;
2177         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2178         if (!cmd_info)
2179                 return -EMSGSIZE;
2180
2181         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2182                                entry->group_id))
2183                 return -EMSGSIZE;
2184
2185         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2186         case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
2187                 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
2188                 break;
2189         case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
2190                 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
2191                 break;
2192         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2193         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2194                 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
2195                 break;
2196         case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
2197                 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
2198                 break;
2199         default:
2200                 err = -ENOTSUPP;
2201                 break;
2202         }
2203
2204         if (err)
2205                 return err;
2206
2207         rocker_tlv_nest_end(desc_info, cmd_info);
2208
2209         return 0;
2210 }
2211
2212 static int rocker_cmd_group_tbl_del(struct rocker *rocker,
2213                                     struct rocker_port *rocker_port,
2214                                     struct rocker_desc_info *desc_info,
2215                                     void *priv)
2216 {
2217         const struct rocker_group_tbl_entry *entry = priv;
2218         struct rocker_tlv *cmd_info;
2219
2220         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2221                 return -EMSGSIZE;
2222         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2223         if (!cmd_info)
2224                 return -EMSGSIZE;
2225         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2226                                entry->group_id))
2227                 return -EMSGSIZE;
2228         rocker_tlv_nest_end(desc_info, cmd_info);
2229
2230         return 0;
2231 }
2232
2233 /***************************************************
2234  * Flow, group, FDB, internal VLAN and neigh tables
2235  ***************************************************/
2236
2237 static int rocker_init_tbls(struct rocker *rocker)
2238 {
2239         hash_init(rocker->flow_tbl);
2240         spin_lock_init(&rocker->flow_tbl_lock);
2241
2242         hash_init(rocker->group_tbl);
2243         spin_lock_init(&rocker->group_tbl_lock);
2244
2245         hash_init(rocker->fdb_tbl);
2246         spin_lock_init(&rocker->fdb_tbl_lock);
2247
2248         hash_init(rocker->internal_vlan_tbl);
2249         spin_lock_init(&rocker->internal_vlan_tbl_lock);
2250
2251         hash_init(rocker->neigh_tbl);
2252         spin_lock_init(&rocker->neigh_tbl_lock);
2253
2254         return 0;
2255 }
2256
2257 static void rocker_free_tbls(struct rocker *rocker)
2258 {
2259         unsigned long flags;
2260         struct rocker_flow_tbl_entry *flow_entry;
2261         struct rocker_group_tbl_entry *group_entry;
2262         struct rocker_fdb_tbl_entry *fdb_entry;
2263         struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
2264         struct rocker_neigh_tbl_entry *neigh_entry;
2265         struct hlist_node *tmp;
2266         int bkt;
2267
2268         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2269         hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
2270                 hash_del(&flow_entry->entry);
2271         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2272
2273         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2274         hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
2275                 hash_del(&group_entry->entry);
2276         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2277
2278         spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
2279         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
2280                 hash_del(&fdb_entry->entry);
2281         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
2282
2283         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
2284         hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
2285                            tmp, internal_vlan_entry, entry)
2286                 hash_del(&internal_vlan_entry->entry);
2287         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
2288
2289         spin_lock_irqsave(&rocker->neigh_tbl_lock, flags);
2290         hash_for_each_safe(rocker->neigh_tbl, bkt, tmp, neigh_entry, entry)
2291                 hash_del(&neigh_entry->entry);
2292         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, flags);
2293 }
2294
2295 static struct rocker_flow_tbl_entry *
2296 rocker_flow_tbl_find(struct rocker *rocker, struct rocker_flow_tbl_entry *match)
2297 {
2298         struct rocker_flow_tbl_entry *found;
2299         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2300
2301         hash_for_each_possible(rocker->flow_tbl, found,
2302                                entry, match->key_crc32) {
2303                 if (memcmp(&found->key, &match->key, key_len) == 0)
2304                         return found;
2305         }
2306
2307         return NULL;
2308 }
2309
2310 static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
2311                                struct rocker_flow_tbl_entry *match,
2312                                bool nowait)
2313 {
2314         struct rocker *rocker = rocker_port->rocker;
2315         struct rocker_flow_tbl_entry *found;
2316         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2317         unsigned long flags;
2318
2319         match->key_crc32 = crc32(~0, &match->key, key_len);
2320
2321         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2322
2323         found = rocker_flow_tbl_find(rocker, match);
2324
2325         if (found) {
2326                 match->cookie = found->cookie;
2327                 hash_del(&found->entry);
2328                 kfree(found);
2329                 found = match;
2330                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD;
2331         } else {
2332                 found = match;
2333                 found->cookie = rocker->flow_tbl_next_cookie++;
2334                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD;
2335         }
2336
2337         hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
2338
2339         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2340
2341         return rocker_cmd_exec(rocker, rocker_port,
2342                                rocker_cmd_flow_tbl_add,
2343                                found, NULL, NULL, nowait);
2344 }
2345
2346 static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
2347                                struct rocker_flow_tbl_entry *match,
2348                                bool nowait)
2349 {
2350         struct rocker *rocker = rocker_port->rocker;
2351         struct rocker_flow_tbl_entry *found;
2352         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2353         unsigned long flags;
2354         int err = 0;
2355
2356         match->key_crc32 = crc32(~0, &match->key, key_len);
2357
2358         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2359
2360         found = rocker_flow_tbl_find(rocker, match);
2361
2362         if (found) {
2363                 hash_del(&found->entry);
2364                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL;
2365         }
2366
2367         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2368
2369         kfree(match);
2370
2371         if (found) {
2372                 err = rocker_cmd_exec(rocker, rocker_port,
2373                                       rocker_cmd_flow_tbl_del,
2374                                       found, NULL, NULL, nowait);
2375                 kfree(found);
2376         }
2377
2378         return err;
2379 }
2380
2381 static gfp_t rocker_op_flags_gfp(int flags)
2382 {
2383         return flags & ROCKER_OP_FLAG_NOWAIT ? GFP_ATOMIC : GFP_KERNEL;
2384 }
2385
2386 static int rocker_flow_tbl_do(struct rocker_port *rocker_port,
2387                               int flags, struct rocker_flow_tbl_entry *entry)
2388 {
2389         bool nowait = flags & ROCKER_OP_FLAG_NOWAIT;
2390
2391         if (flags & ROCKER_OP_FLAG_REMOVE)
2392                 return rocker_flow_tbl_del(rocker_port, entry, nowait);
2393         else
2394                 return rocker_flow_tbl_add(rocker_port, entry, nowait);
2395 }
2396
2397 static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port,
2398                                    int flags, u32 in_pport, u32 in_pport_mask,
2399                                    enum rocker_of_dpa_table_id goto_tbl)
2400 {
2401         struct rocker_flow_tbl_entry *entry;
2402
2403         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2404         if (!entry)
2405                 return -ENOMEM;
2406
2407         entry->key.priority = ROCKER_PRIORITY_IG_PORT;
2408         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
2409         entry->key.ig_port.in_pport = in_pport;
2410         entry->key.ig_port.in_pport_mask = in_pport_mask;
2411         entry->key.ig_port.goto_tbl = goto_tbl;
2412
2413         return rocker_flow_tbl_do(rocker_port, flags, entry);
2414 }
2415
2416 static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port,
2417                                 int flags, u32 in_pport,
2418                                 __be16 vlan_id, __be16 vlan_id_mask,
2419                                 enum rocker_of_dpa_table_id goto_tbl,
2420                                 bool untagged, __be16 new_vlan_id)
2421 {
2422         struct rocker_flow_tbl_entry *entry;
2423
2424         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2425         if (!entry)
2426                 return -ENOMEM;
2427
2428         entry->key.priority = ROCKER_PRIORITY_VLAN;
2429         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
2430         entry->key.vlan.in_pport = in_pport;
2431         entry->key.vlan.vlan_id = vlan_id;
2432         entry->key.vlan.vlan_id_mask = vlan_id_mask;
2433         entry->key.vlan.goto_tbl = goto_tbl;
2434
2435         entry->key.vlan.untagged = untagged;
2436         entry->key.vlan.new_vlan_id = new_vlan_id;
2437
2438         return rocker_flow_tbl_do(rocker_port, flags, entry);
2439 }
2440
2441 static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port,
2442                                     u32 in_pport, u32 in_pport_mask,
2443                                     __be16 eth_type, const u8 *eth_dst,
2444                                     const u8 *eth_dst_mask, __be16 vlan_id,
2445                                     __be16 vlan_id_mask, bool copy_to_cpu,
2446                                     int flags)
2447 {
2448         struct rocker_flow_tbl_entry *entry;
2449
2450         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2451         if (!entry)
2452                 return -ENOMEM;
2453
2454         if (is_multicast_ether_addr(eth_dst)) {
2455                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST;
2456                 entry->key.term_mac.goto_tbl =
2457                          ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
2458         } else {
2459                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST;
2460                 entry->key.term_mac.goto_tbl =
2461                          ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2462         }
2463
2464         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2465         entry->key.term_mac.in_pport = in_pport;
2466         entry->key.term_mac.in_pport_mask = in_pport_mask;
2467         entry->key.term_mac.eth_type = eth_type;
2468         ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
2469         ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
2470         entry->key.term_mac.vlan_id = vlan_id;
2471         entry->key.term_mac.vlan_id_mask = vlan_id_mask;
2472         entry->key.term_mac.copy_to_cpu = copy_to_cpu;
2473
2474         return rocker_flow_tbl_do(rocker_port, flags, entry);
2475 }
2476
2477 static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port,
2478                                   int flags,
2479                                   const u8 *eth_dst, const u8 *eth_dst_mask,
2480                                   __be16 vlan_id, u32 tunnel_id,
2481                                   enum rocker_of_dpa_table_id goto_tbl,
2482                                   u32 group_id, bool copy_to_cpu)
2483 {
2484         struct rocker_flow_tbl_entry *entry;
2485         u32 priority;
2486         bool vlan_bridging = !!vlan_id;
2487         bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
2488         bool wild = false;
2489
2490         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2491         if (!entry)
2492                 return -ENOMEM;
2493
2494         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
2495
2496         if (eth_dst) {
2497                 entry->key.bridge.has_eth_dst = 1;
2498                 ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
2499         }
2500         if (eth_dst_mask) {
2501                 entry->key.bridge.has_eth_dst_mask = 1;
2502                 ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
2503                 if (memcmp(eth_dst_mask, ff_mac, ETH_ALEN))
2504                         wild = true;
2505         }
2506
2507         priority = ROCKER_PRIORITY_UNKNOWN;
2508         if (vlan_bridging && dflt && wild)
2509                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
2510         else if (vlan_bridging && dflt && !wild)
2511                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
2512         else if (vlan_bridging && !dflt)
2513                 priority = ROCKER_PRIORITY_BRIDGING_VLAN;
2514         else if (!vlan_bridging && dflt && wild)
2515                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
2516         else if (!vlan_bridging && dflt && !wild)
2517                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
2518         else if (!vlan_bridging && !dflt)
2519                 priority = ROCKER_PRIORITY_BRIDGING_TENANT;
2520
2521         entry->key.priority = priority;
2522         entry->key.bridge.vlan_id = vlan_id;
2523         entry->key.bridge.tunnel_id = tunnel_id;
2524         entry->key.bridge.goto_tbl = goto_tbl;
2525         entry->key.bridge.group_id = group_id;
2526         entry->key.bridge.copy_to_cpu = copy_to_cpu;
2527
2528         return rocker_flow_tbl_do(rocker_port, flags, entry);
2529 }
2530
2531 static int rocker_flow_tbl_ucast4_routing(struct rocker_port *rocker_port,
2532                                           __be16 eth_type, __be32 dst,
2533                                           __be32 dst_mask, u32 priority,
2534                                           enum rocker_of_dpa_table_id goto_tbl,
2535                                           u32 group_id, int flags)
2536 {
2537         struct rocker_flow_tbl_entry *entry;
2538
2539         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2540         if (!entry)
2541                 return -ENOMEM;
2542
2543         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2544         entry->key.priority = priority;
2545         entry->key.ucast_routing.eth_type = eth_type;
2546         entry->key.ucast_routing.dst4 = dst;
2547         entry->key.ucast_routing.dst4_mask = dst_mask;
2548         entry->key.ucast_routing.goto_tbl = goto_tbl;
2549         entry->key.ucast_routing.group_id = group_id;
2550         entry->key_len = offsetof(struct rocker_flow_tbl_key,
2551                                   ucast_routing.group_id);
2552
2553         return rocker_flow_tbl_do(rocker_port, flags, entry);
2554 }
2555
2556 static int rocker_flow_tbl_acl(struct rocker_port *rocker_port,
2557                                int flags, u32 in_pport,
2558                                u32 in_pport_mask,
2559                                const u8 *eth_src, const u8 *eth_src_mask,
2560                                const u8 *eth_dst, const u8 *eth_dst_mask,
2561                                __be16 eth_type,
2562                                __be16 vlan_id, __be16 vlan_id_mask,
2563                                u8 ip_proto, u8 ip_proto_mask,
2564                                u8 ip_tos, u8 ip_tos_mask,
2565                                u32 group_id)
2566 {
2567         u32 priority;
2568         struct rocker_flow_tbl_entry *entry;
2569
2570         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2571         if (!entry)
2572                 return -ENOMEM;
2573
2574         priority = ROCKER_PRIORITY_ACL_NORMAL;
2575         if (eth_dst && eth_dst_mask) {
2576                 if (memcmp(eth_dst_mask, mcast_mac, ETH_ALEN) == 0)
2577                         priority = ROCKER_PRIORITY_ACL_DFLT;
2578                 else if (is_link_local_ether_addr(eth_dst))
2579                         priority = ROCKER_PRIORITY_ACL_CTRL;
2580         }
2581
2582         entry->key.priority = priority;
2583         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2584         entry->key.acl.in_pport = in_pport;
2585         entry->key.acl.in_pport_mask = in_pport_mask;
2586
2587         if (eth_src)
2588                 ether_addr_copy(entry->key.acl.eth_src, eth_src);
2589         if (eth_src_mask)
2590                 ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
2591         if (eth_dst)
2592                 ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
2593         if (eth_dst_mask)
2594                 ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
2595
2596         entry->key.acl.eth_type = eth_type;
2597         entry->key.acl.vlan_id = vlan_id;
2598         entry->key.acl.vlan_id_mask = vlan_id_mask;
2599         entry->key.acl.ip_proto = ip_proto;
2600         entry->key.acl.ip_proto_mask = ip_proto_mask;
2601         entry->key.acl.ip_tos = ip_tos;
2602         entry->key.acl.ip_tos_mask = ip_tos_mask;
2603         entry->key.acl.group_id = group_id;
2604
2605         return rocker_flow_tbl_do(rocker_port, flags, entry);
2606 }
2607
2608 static struct rocker_group_tbl_entry *
2609 rocker_group_tbl_find(struct rocker *rocker,
2610                       struct rocker_group_tbl_entry *match)
2611 {
2612         struct rocker_group_tbl_entry *found;
2613
2614         hash_for_each_possible(rocker->group_tbl, found,
2615                                entry, match->group_id) {
2616                 if (found->group_id == match->group_id)
2617                         return found;
2618         }
2619
2620         return NULL;
2621 }
2622
2623 static void rocker_group_tbl_entry_free(struct rocker_group_tbl_entry *entry)
2624 {
2625         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2626         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2627         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2628                 kfree(entry->group_ids);
2629                 break;
2630         default:
2631                 break;
2632         }
2633         kfree(entry);
2634 }
2635
2636 static int rocker_group_tbl_add(struct rocker_port *rocker_port,
2637                                 struct rocker_group_tbl_entry *match,
2638                                 bool nowait)
2639 {
2640         struct rocker *rocker = rocker_port->rocker;
2641         struct rocker_group_tbl_entry *found;
2642         unsigned long flags;
2643
2644         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2645
2646         found = rocker_group_tbl_find(rocker, match);
2647
2648         if (found) {
2649                 hash_del(&found->entry);
2650                 rocker_group_tbl_entry_free(found);
2651                 found = match;
2652                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
2653         } else {
2654                 found = match;
2655                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
2656         }
2657
2658         hash_add(rocker->group_tbl, &found->entry, found->group_id);
2659
2660         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2661
2662         return rocker_cmd_exec(rocker, rocker_port,
2663                                rocker_cmd_group_tbl_add,
2664                                found, NULL, NULL, nowait);
2665 }
2666
2667 static int rocker_group_tbl_del(struct rocker_port *rocker_port,
2668                                 struct rocker_group_tbl_entry *match,
2669                                 bool nowait)
2670 {
2671         struct rocker *rocker = rocker_port->rocker;
2672         struct rocker_group_tbl_entry *found;
2673         unsigned long flags;
2674         int err = 0;
2675
2676         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2677
2678         found = rocker_group_tbl_find(rocker, match);
2679
2680         if (found) {
2681                 hash_del(&found->entry);
2682                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
2683         }
2684
2685         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2686
2687         rocker_group_tbl_entry_free(match);
2688
2689         if (found) {
2690                 err = rocker_cmd_exec(rocker, rocker_port,
2691                                       rocker_cmd_group_tbl_del,
2692                                       found, NULL, NULL, nowait);
2693                 rocker_group_tbl_entry_free(found);
2694         }
2695
2696         return err;
2697 }
2698
2699 static int rocker_group_tbl_do(struct rocker_port *rocker_port,
2700                                int flags, struct rocker_group_tbl_entry *entry)
2701 {
2702         bool nowait = flags & ROCKER_OP_FLAG_NOWAIT;
2703
2704         if (flags & ROCKER_OP_FLAG_REMOVE)
2705                 return rocker_group_tbl_del(rocker_port, entry, nowait);
2706         else
2707                 return rocker_group_tbl_add(rocker_port, entry, nowait);
2708 }
2709
2710 static int rocker_group_l2_interface(struct rocker_port *rocker_port,
2711                                      int flags, __be16 vlan_id,
2712                                      u32 out_pport, int pop_vlan)
2713 {
2714         struct rocker_group_tbl_entry *entry;
2715
2716         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2717         if (!entry)
2718                 return -ENOMEM;
2719
2720         entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
2721         entry->l2_interface.pop_vlan = pop_vlan;
2722
2723         return rocker_group_tbl_do(rocker_port, flags, entry);
2724 }
2725
2726 static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
2727                                    int flags, u8 group_count,
2728                                    u32 *group_ids, u32 group_id)
2729 {
2730         struct rocker_group_tbl_entry *entry;
2731
2732         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2733         if (!entry)
2734                 return -ENOMEM;
2735
2736         entry->group_id = group_id;
2737         entry->group_count = group_count;
2738
2739         entry->group_ids = kcalloc(group_count, sizeof(u32),
2740                                    rocker_op_flags_gfp(flags));
2741         if (!entry->group_ids) {
2742                 kfree(entry);
2743                 return -ENOMEM;
2744         }
2745         memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
2746
2747         return rocker_group_tbl_do(rocker_port, flags, entry);
2748 }
2749
2750 static int rocker_group_l2_flood(struct rocker_port *rocker_port,
2751                                  int flags, __be16 vlan_id,
2752                                  u8 group_count, u32 *group_ids,
2753                                  u32 group_id)
2754 {
2755         return rocker_group_l2_fan_out(rocker_port, flags,
2756                                        group_count, group_ids,
2757                                        group_id);
2758 }
2759
2760 static int rocker_group_l3_unicast(struct rocker_port *rocker_port,
2761                                    int flags, u32 index, u8 *src_mac,
2762                                    u8 *dst_mac, __be16 vlan_id,
2763                                    bool ttl_check, u32 pport)
2764 {
2765         struct rocker_group_tbl_entry *entry;
2766
2767         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2768         if (!entry)
2769                 return -ENOMEM;
2770
2771         entry->group_id = ROCKER_GROUP_L3_UNICAST(index);
2772         if (src_mac)
2773                 ether_addr_copy(entry->l3_unicast.eth_src, src_mac);
2774         if (dst_mac)
2775                 ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac);
2776         entry->l3_unicast.vlan_id = vlan_id;
2777         entry->l3_unicast.ttl_check = ttl_check;
2778         entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport);
2779
2780         return rocker_group_tbl_do(rocker_port, flags, entry);
2781 }
2782
2783 static struct rocker_neigh_tbl_entry *
2784         rocker_neigh_tbl_find(struct rocker *rocker, __be32 ip_addr)
2785 {
2786         struct rocker_neigh_tbl_entry *found;
2787
2788         hash_for_each_possible(rocker->neigh_tbl, found,
2789                                entry, be32_to_cpu(ip_addr))
2790                 if (found->ip_addr == ip_addr)
2791                         return found;
2792
2793         return NULL;
2794 }
2795
2796 static void _rocker_neigh_add(struct rocker *rocker,
2797                               struct rocker_neigh_tbl_entry *entry)
2798 {
2799         entry->index = rocker->neigh_tbl_next_index++;
2800         entry->ref_count++;
2801         hash_add(rocker->neigh_tbl, &entry->entry,
2802                  be32_to_cpu(entry->ip_addr));
2803 }
2804
2805 static void _rocker_neigh_del(struct rocker *rocker,
2806                               struct rocker_neigh_tbl_entry *entry)
2807 {
2808         if (--entry->ref_count == 0) {
2809                 hash_del(&entry->entry);
2810                 kfree(entry);
2811         }
2812 }
2813
2814 static void _rocker_neigh_update(struct rocker *rocker,
2815                                  struct rocker_neigh_tbl_entry *entry,
2816                                  u8 *eth_dst, bool ttl_check)
2817 {
2818         if (eth_dst) {
2819                 ether_addr_copy(entry->eth_dst, eth_dst);
2820                 entry->ttl_check = ttl_check;
2821         } else {
2822                 entry->ref_count++;
2823         }
2824 }
2825
2826 static int rocker_port_ipv4_neigh(struct rocker_port *rocker_port,
2827                                   int flags, __be32 ip_addr, u8 *eth_dst)
2828 {
2829         struct rocker *rocker = rocker_port->rocker;
2830         struct rocker_neigh_tbl_entry *entry;
2831         struct rocker_neigh_tbl_entry *found;
2832         unsigned long lock_flags;
2833         __be16 eth_type = htons(ETH_P_IP);
2834         enum rocker_of_dpa_table_id goto_tbl =
2835                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2836         u32 group_id;
2837         u32 priority = 0;
2838         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2839         bool updating;
2840         bool removing;
2841         int err = 0;
2842
2843         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2844         if (!entry)
2845                 return -ENOMEM;
2846
2847         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
2848
2849         found = rocker_neigh_tbl_find(rocker, ip_addr);
2850
2851         updating = found && adding;
2852         removing = found && !adding;
2853         adding = !found && adding;
2854
2855         if (adding) {
2856                 entry->ip_addr = ip_addr;
2857                 entry->dev = rocker_port->dev;
2858                 ether_addr_copy(entry->eth_dst, eth_dst);
2859                 entry->ttl_check = true;
2860                 _rocker_neigh_add(rocker, entry);
2861         } else if (removing) {
2862                 memcpy(entry, found, sizeof(*entry));
2863                 _rocker_neigh_del(rocker, found);
2864         } else if (updating) {
2865                 _rocker_neigh_update(rocker, found, eth_dst, true);
2866                 memcpy(entry, found, sizeof(*entry));
2867         } else {
2868                 err = -ENOENT;
2869         }
2870
2871         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
2872
2873         if (err)
2874                 goto err_out;
2875
2876         /* For each active neighbor, we have an L3 unicast group and
2877          * a /32 route to the neighbor, which uses the L3 unicast
2878          * group.  The L3 unicast group can also be referred to by
2879          * other routes' nexthops.
2880          */
2881
2882         err = rocker_group_l3_unicast(rocker_port, flags,
2883                                       entry->index,
2884                                       rocker_port->dev->dev_addr,
2885                                       entry->eth_dst,
2886                                       rocker_port->internal_vlan_id,
2887                                       entry->ttl_check,
2888                                       rocker_port->pport);
2889         if (err) {
2890                 netdev_err(rocker_port->dev,
2891                            "Error (%d) L3 unicast group index %d\n",
2892                            err, entry->index);
2893                 goto err_out;
2894         }
2895
2896         if (adding || removing) {
2897                 group_id = ROCKER_GROUP_L3_UNICAST(entry->index);
2898                 err = rocker_flow_tbl_ucast4_routing(rocker_port,
2899                                                      eth_type, ip_addr,
2900                                                      inet_make_mask(32),
2901                                                      priority, goto_tbl,
2902                                                      group_id, flags);
2903
2904                 if (err)
2905                         netdev_err(rocker_port->dev,
2906                                    "Error (%d) /32 unicast route %pI4 group 0x%08x\n",
2907                                    err, &entry->ip_addr, group_id);
2908         }
2909
2910 err_out:
2911         if (!adding)
2912                 kfree(entry);
2913
2914         return err;
2915 }
2916
2917 static int rocker_port_ipv4_resolve(struct rocker_port *rocker_port,
2918                                     __be32 ip_addr)
2919 {
2920         struct net_device *dev = rocker_port->dev;
2921         struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr);
2922         int err = 0;
2923
2924         if (!n) {
2925                 n = neigh_create(&arp_tbl, &ip_addr, dev);
2926                 if (IS_ERR(n))
2927                         return IS_ERR(n);
2928         }
2929
2930         /* If the neigh is already resolved, then go ahead and
2931          * install the entry, otherwise start the ARP process to
2932          * resolve the neigh.
2933          */
2934
2935         if (n->nud_state & NUD_VALID)
2936                 err = rocker_port_ipv4_neigh(rocker_port, 0, ip_addr, n->ha);
2937         else
2938                 neigh_event_send(n, NULL);
2939
2940         neigh_release(n);
2941         return err;
2942 }
2943
2944 static int rocker_port_ipv4_nh(struct rocker_port *rocker_port, int flags,
2945                                __be32 ip_addr, u32 *index)
2946 {
2947         struct rocker *rocker = rocker_port->rocker;
2948         struct rocker_neigh_tbl_entry *entry;
2949         struct rocker_neigh_tbl_entry *found;
2950         unsigned long lock_flags;
2951         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2952         bool updating;
2953         bool removing;
2954         bool resolved = true;
2955         int err = 0;
2956
2957         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2958         if (!entry)
2959                 return -ENOMEM;
2960
2961         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
2962
2963         found = rocker_neigh_tbl_find(rocker, ip_addr);
2964         if (found)
2965                 *index = found->index;
2966
2967         updating = found && adding;
2968         removing = found && !adding;
2969         adding = !found && adding;
2970
2971         if (adding) {
2972                 entry->ip_addr = ip_addr;
2973                 entry->dev = rocker_port->dev;
2974                 _rocker_neigh_add(rocker, entry);
2975                 *index = entry->index;
2976                 resolved = false;
2977         } else if (removing) {
2978                 _rocker_neigh_del(rocker, found);
2979         } else if (updating) {
2980                 _rocker_neigh_update(rocker, found, NULL, false);
2981                 resolved = !is_zero_ether_addr(found->eth_dst);
2982         } else {
2983                 err = -ENOENT;
2984         }
2985
2986         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
2987
2988         if (!adding)
2989                 kfree(entry);
2990
2991         if (err)
2992                 return err;
2993
2994         /* Resolved means neigh ip_addr is resolved to neigh mac. */
2995
2996         if (!resolved)
2997                 err = rocker_port_ipv4_resolve(rocker_port, ip_addr);
2998
2999         return err;
3000 }
3001
3002 static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
3003                                         int flags, __be16 vlan_id)
3004 {
3005         struct rocker_port *p;
3006         struct rocker *rocker = rocker_port->rocker;
3007         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3008         u32 *group_ids;
3009         u8 group_count = 0;
3010         int err = 0;
3011         int i;
3012
3013         group_ids = kcalloc(rocker->port_count, sizeof(u32),
3014                             rocker_op_flags_gfp(flags));
3015         if (!group_ids)
3016                 return -ENOMEM;
3017
3018         /* Adjust the flood group for this VLAN.  The flood group
3019          * references an L2 interface group for each port in this
3020          * VLAN.
3021          */
3022
3023         for (i = 0; i < rocker->port_count; i++) {
3024                 p = rocker->ports[i];
3025                 if (!rocker_port_is_bridged(p))
3026                         continue;
3027                 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
3028                         group_ids[group_count++] =
3029                                 ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport);
3030                 }
3031         }
3032
3033         /* If there are no bridged ports in this VLAN, we're done */
3034         if (group_count == 0)
3035                 goto no_ports_in_vlan;
3036
3037         err = rocker_group_l2_flood(rocker_port, flags, vlan_id,
3038                                     group_count, group_ids,
3039                                     group_id);
3040         if (err)
3041                 netdev_err(rocker_port->dev,
3042                            "Error (%d) port VLAN l2 flood group\n", err);
3043
3044 no_ports_in_vlan:
3045         kfree(group_ids);
3046         return err;
3047 }
3048
3049 static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
3050                                       int flags, __be16 vlan_id,
3051                                       bool pop_vlan)
3052 {
3053         struct rocker *rocker = rocker_port->rocker;
3054         struct rocker_port *p;
3055         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3056         u32 out_pport;
3057         int ref = 0;
3058         int err;
3059         int i;
3060
3061         /* An L2 interface group for this port in this VLAN, but
3062          * only when port STP state is LEARNING|FORWARDING.
3063          */
3064
3065         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3066             rocker_port->stp_state == BR_STATE_FORWARDING) {
3067                 out_pport = rocker_port->pport;
3068                 err = rocker_group_l2_interface(rocker_port, flags,
3069                                                 vlan_id, out_pport,
3070                                                 pop_vlan);
3071                 if (err) {
3072                         netdev_err(rocker_port->dev,
3073                                    "Error (%d) port VLAN l2 group for pport %d\n",
3074                                    err, out_pport);
3075                         return err;
3076                 }
3077         }
3078
3079         /* An L2 interface group for this VLAN to CPU port.
3080          * Add when first port joins this VLAN and destroy when
3081          * last port leaves this VLAN.
3082          */
3083
3084         for (i = 0; i < rocker->port_count; i++) {
3085                 p = rocker->ports[i];
3086                 if (test_bit(ntohs(vlan_id), p->vlan_bitmap))
3087                         ref++;
3088         }
3089
3090         if ((!adding || ref != 1) && (adding || ref != 0))
3091                 return 0;
3092
3093         out_pport = 0;
3094         err = rocker_group_l2_interface(rocker_port, flags,
3095                                         vlan_id, out_pport,
3096                                         pop_vlan);
3097         if (err) {
3098                 netdev_err(rocker_port->dev,
3099                            "Error (%d) port VLAN l2 group for CPU port\n", err);
3100                 return err;
3101         }
3102
3103         return 0;
3104 }
3105
3106 static struct rocker_ctrl {
3107         const u8 *eth_dst;
3108         const u8 *eth_dst_mask;
3109         __be16 eth_type;
3110         bool acl;
3111         bool bridge;
3112         bool term;
3113         bool copy_to_cpu;
3114 } rocker_ctrls[] = {
3115         [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
3116                 /* pass link local multicast pkts up to CPU for filtering */
3117                 .eth_dst = ll_mac,
3118                 .eth_dst_mask = ll_mask,
3119                 .acl = true,
3120         },
3121         [ROCKER_CTRL_LOCAL_ARP] = {
3122                 /* pass local ARP pkts up to CPU */
3123                 .eth_dst = zero_mac,
3124                 .eth_dst_mask = zero_mac,
3125                 .eth_type = htons(ETH_P_ARP),
3126                 .acl = true,
3127         },
3128         [ROCKER_CTRL_IPV4_MCAST] = {
3129                 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
3130                 .eth_dst = ipv4_mcast,
3131                 .eth_dst_mask = ipv4_mask,
3132                 .eth_type = htons(ETH_P_IP),
3133                 .term  = true,
3134                 .copy_to_cpu = true,
3135         },
3136         [ROCKER_CTRL_IPV6_MCAST] = {
3137                 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
3138                 .eth_dst = ipv6_mcast,
3139                 .eth_dst_mask = ipv6_mask,
3140                 .eth_type = htons(ETH_P_IPV6),
3141                 .term  = true,
3142                 .copy_to_cpu = true,
3143         },
3144         [ROCKER_CTRL_DFLT_BRIDGING] = {
3145                 /* flood any pkts on vlan */
3146                 .bridge = true,
3147                 .copy_to_cpu = true,
3148         },
3149 };
3150
3151 static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
3152                                      int flags, struct rocker_ctrl *ctrl,
3153                                      __be16 vlan_id)
3154 {
3155         u32 in_pport = rocker_port->pport;
3156         u32 in_pport_mask = 0xffffffff;
3157         u32 out_pport = 0;
3158         u8 *eth_src = NULL;
3159         u8 *eth_src_mask = NULL;
3160         __be16 vlan_id_mask = htons(0xffff);
3161         u8 ip_proto = 0;
3162         u8 ip_proto_mask = 0;
3163         u8 ip_tos = 0;
3164         u8 ip_tos_mask = 0;
3165         u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3166         int err;
3167
3168         err = rocker_flow_tbl_acl(rocker_port, flags,
3169                                   in_pport, in_pport_mask,
3170                                   eth_src, eth_src_mask,
3171                                   ctrl->eth_dst, ctrl->eth_dst_mask,
3172                                   ctrl->eth_type,
3173                                   vlan_id, vlan_id_mask,
3174                                   ip_proto, ip_proto_mask,
3175                                   ip_tos, ip_tos_mask,
3176                                   group_id);
3177
3178         if (err)
3179                 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
3180
3181         return err;
3182 }
3183
3184 static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
3185                                         int flags, struct rocker_ctrl *ctrl,
3186                                         __be16 vlan_id)
3187 {
3188         enum rocker_of_dpa_table_id goto_tbl =
3189                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3190         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3191         u32 tunnel_id = 0;
3192         int err;
3193
3194         if (!rocker_port_is_bridged(rocker_port))
3195                 return 0;
3196
3197         err = rocker_flow_tbl_bridge(rocker_port, flags,
3198                                      ctrl->eth_dst, ctrl->eth_dst_mask,
3199                                      vlan_id, tunnel_id,
3200                                      goto_tbl, group_id, ctrl->copy_to_cpu);
3201
3202         if (err)
3203                 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
3204
3205         return err;
3206 }
3207
3208 static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
3209                                       int flags, struct rocker_ctrl *ctrl,
3210                                       __be16 vlan_id)
3211 {
3212         u32 in_pport_mask = 0xffffffff;
3213         __be16 vlan_id_mask = htons(0xffff);
3214         int err;
3215
3216         if (ntohs(vlan_id) == 0)
3217                 vlan_id = rocker_port->internal_vlan_id;
3218
3219         err = rocker_flow_tbl_term_mac(rocker_port,
3220                                        rocker_port->pport, in_pport_mask,
3221                                        ctrl->eth_type, ctrl->eth_dst,
3222                                        ctrl->eth_dst_mask, vlan_id,
3223                                        vlan_id_mask, ctrl->copy_to_cpu,
3224                                        flags);
3225
3226         if (err)
3227                 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
3228
3229         return err;
3230 }
3231
3232 static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port, int flags,
3233                                  struct rocker_ctrl *ctrl, __be16 vlan_id)
3234 {
3235         if (ctrl->acl)
3236                 return rocker_port_ctrl_vlan_acl(rocker_port, flags,
3237                                                  ctrl, vlan_id);
3238         if (ctrl->bridge)
3239                 return rocker_port_ctrl_vlan_bridge(rocker_port, flags,
3240                                                     ctrl, vlan_id);
3241
3242         if (ctrl->term)
3243                 return rocker_port_ctrl_vlan_term(rocker_port, flags,
3244                                                   ctrl, vlan_id);
3245
3246         return -EOPNOTSUPP;
3247 }
3248
3249 static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
3250                                      int flags, __be16 vlan_id)
3251 {
3252         int err = 0;
3253         int i;
3254
3255         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3256                 if (rocker_port->ctrls[i]) {
3257                         err = rocker_port_ctrl_vlan(rocker_port, flags,
3258                                                     &rocker_ctrls[i], vlan_id);
3259                         if (err)
3260                                 return err;
3261                 }
3262         }
3263
3264         return err;
3265 }
3266
3267 static int rocker_port_ctrl(struct rocker_port *rocker_port, int flags,
3268                             struct rocker_ctrl *ctrl)
3269 {
3270         u16 vid;
3271         int err = 0;
3272
3273         for (vid = 1; vid < VLAN_N_VID; vid++) {
3274                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3275                         continue;
3276                 err = rocker_port_ctrl_vlan(rocker_port, flags,
3277                                             ctrl, htons(vid));
3278                 if (err)
3279                         break;
3280         }
3281
3282         return err;
3283 }
3284
3285 static int rocker_port_vlan(struct rocker_port *rocker_port, int flags,
3286                             u16 vid)
3287 {
3288         enum rocker_of_dpa_table_id goto_tbl =
3289                 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
3290         u32 in_pport = rocker_port->pport;
3291         __be16 vlan_id = htons(vid);
3292         __be16 vlan_id_mask = htons(0xffff);
3293         __be16 internal_vlan_id;
3294         bool untagged;
3295         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3296         int err;
3297
3298         internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
3299
3300         if (adding && test_and_set_bit(ntohs(internal_vlan_id),
3301                                        rocker_port->vlan_bitmap))
3302                         return 0; /* already added */
3303         else if (!adding && !test_and_clear_bit(ntohs(internal_vlan_id),
3304                                                 rocker_port->vlan_bitmap))
3305                         return 0; /* already removed */
3306
3307         if (adding) {
3308                 err = rocker_port_ctrl_vlan_add(rocker_port, flags,
3309                                                 internal_vlan_id);
3310                 if (err) {
3311                         netdev_err(rocker_port->dev,
3312                                    "Error (%d) port ctrl vlan add\n", err);
3313                         return err;
3314                 }
3315         }
3316
3317         err = rocker_port_vlan_l2_groups(rocker_port, flags,
3318                                          internal_vlan_id, untagged);
3319         if (err) {
3320                 netdev_err(rocker_port->dev,
3321                            "Error (%d) port VLAN l2 groups\n", err);
3322                 return err;
3323         }
3324
3325         err = rocker_port_vlan_flood_group(rocker_port, flags,
3326                                            internal_vlan_id);
3327         if (err) {
3328                 netdev_err(rocker_port->dev,
3329                            "Error (%d) port VLAN l2 flood group\n", err);
3330                 return err;
3331         }
3332
3333         err = rocker_flow_tbl_vlan(rocker_port, flags,
3334                                    in_pport, vlan_id, vlan_id_mask,
3335                                    goto_tbl, untagged, internal_vlan_id);
3336         if (err)
3337                 netdev_err(rocker_port->dev,
3338                            "Error (%d) port VLAN table\n", err);
3339
3340         return err;
3341 }
3342
3343 static int rocker_port_ig_tbl(struct rocker_port *rocker_port, int flags)
3344 {
3345         enum rocker_of_dpa_table_id goto_tbl;
3346         u32 in_pport;
3347         u32 in_pport_mask;
3348         int err;
3349
3350         /* Normal Ethernet Frames.  Matches pkts from any local physical
3351          * ports.  Goto VLAN tbl.
3352          */
3353
3354         in_pport = 0;
3355         in_pport_mask = 0xffff0000;
3356         goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
3357
3358         err = rocker_flow_tbl_ig_port(rocker_port, flags,
3359                                       in_pport, in_pport_mask,
3360                                       goto_tbl);
3361         if (err)
3362                 netdev_err(rocker_port->dev,
3363                            "Error (%d) ingress port table entry\n", err);
3364
3365         return err;
3366 }
3367
3368 struct rocker_fdb_learn_work {
3369         struct work_struct work;
3370         struct net_device *dev;
3371         int flags;
3372         u8 addr[ETH_ALEN];
3373         u16 vid;
3374 };
3375
3376 static void rocker_port_fdb_learn_work(struct work_struct *work)
3377 {
3378         struct rocker_fdb_learn_work *lw =
3379                 container_of(work, struct rocker_fdb_learn_work, work);
3380         bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
3381         bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
3382         struct netdev_switch_notifier_fdb_info info;
3383
3384         info.addr = lw->addr;
3385         info.vid = lw->vid;
3386
3387         if (learned && removing)
3388                 call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_DEL,
3389                                              lw->dev, &info.info);
3390         else if (learned && !removing)
3391                 call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_ADD,
3392                                              lw->dev, &info.info);
3393
3394         kfree(work);
3395 }
3396
3397 static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
3398                                  int flags, const u8 *addr, __be16 vlan_id)
3399 {
3400         struct rocker_fdb_learn_work *lw;
3401         enum rocker_of_dpa_table_id goto_tbl =
3402                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3403         u32 out_pport = rocker_port->pport;
3404         u32 tunnel_id = 0;
3405         u32 group_id = ROCKER_GROUP_NONE;
3406         bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
3407         bool copy_to_cpu = false;
3408         int err;
3409
3410         if (rocker_port_is_bridged(rocker_port))
3411                 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3412
3413         if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3414                 err = rocker_flow_tbl_bridge(rocker_port, flags, addr, NULL,
3415                                              vlan_id, tunnel_id, goto_tbl,
3416                                              group_id, copy_to_cpu);
3417                 if (err)
3418                         return err;
3419         }
3420
3421         if (!syncing)
3422                 return 0;
3423
3424         if (!rocker_port_is_bridged(rocker_port))
3425                 return 0;
3426
3427         lw = kmalloc(sizeof(*lw), rocker_op_flags_gfp(flags));
3428         if (!lw)
3429                 return -ENOMEM;
3430
3431         INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3432
3433         lw->dev = rocker_port->dev;
3434         lw->flags = flags;
3435         ether_addr_copy(lw->addr, addr);
3436         lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3437
3438         schedule_work(&lw->work);
3439
3440         return 0;
3441 }
3442
3443 static struct rocker_fdb_tbl_entry *
3444 rocker_fdb_tbl_find(struct rocker *rocker, struct rocker_fdb_tbl_entry *match)
3445 {
3446         struct rocker_fdb_tbl_entry *found;
3447
3448         hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3449                 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3450                         return found;
3451
3452         return NULL;
3453 }
3454
3455 static int rocker_port_fdb(struct rocker_port *rocker_port,
3456                            const unsigned char *addr,
3457                            __be16 vlan_id, int flags)
3458 {
3459         struct rocker *rocker = rocker_port->rocker;
3460         struct rocker_fdb_tbl_entry *fdb;
3461         struct rocker_fdb_tbl_entry *found;
3462         bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3463         unsigned long lock_flags;
3464
3465         fdb = kzalloc(sizeof(*fdb), rocker_op_flags_gfp(flags));
3466         if (!fdb)
3467                 return -ENOMEM;
3468
3469         fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
3470         fdb->key.pport = rocker_port->pport;
3471         ether_addr_copy(fdb->key.addr, addr);
3472         fdb->key.vlan_id = vlan_id;
3473         fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3474
3475         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3476
3477         found = rocker_fdb_tbl_find(rocker, fdb);
3478
3479         if (removing && found) {
3480                 kfree(fdb);
3481                 hash_del(&found->entry);
3482         } else if (!removing && !found) {
3483                 hash_add(rocker->fdb_tbl, &fdb->entry, fdb->key_crc32);
3484         }
3485
3486         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3487
3488         /* Check if adding and already exists, or removing and can't find */
3489         if (!found != !removing) {
3490                 kfree(fdb);
3491                 if (!found && removing)
3492                         return 0;
3493                 /* Refreshing existing to update aging timers */
3494                 flags |= ROCKER_OP_FLAG_REFRESH;
3495         }
3496
3497         return rocker_port_fdb_learn(rocker_port, flags, addr, vlan_id);
3498 }
3499
3500 static int rocker_port_fdb_flush(struct rocker_port *rocker_port)
3501 {
3502         struct rocker *rocker = rocker_port->rocker;
3503         struct rocker_fdb_tbl_entry *found;
3504         unsigned long lock_flags;
3505         int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
3506         struct hlist_node *tmp;
3507         int bkt;
3508         int err = 0;
3509
3510         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3511             rocker_port->stp_state == BR_STATE_FORWARDING)
3512                 return 0;
3513
3514         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3515
3516         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3517                 if (found->key.pport != rocker_port->pport)
3518                         continue;
3519                 if (!found->learned)
3520                         continue;
3521                 err = rocker_port_fdb_learn(rocker_port, flags,
3522                                             found->key.addr,
3523                                             found->key.vlan_id);
3524                 if (err)
3525                         goto err_out;
3526                 hash_del(&found->entry);
3527         }
3528
3529 err_out:
3530         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3531
3532         return err;
3533 }
3534
3535 static int rocker_port_router_mac(struct rocker_port *rocker_port,
3536                                   int flags, __be16 vlan_id)
3537 {
3538         u32 in_pport_mask = 0xffffffff;
3539         __be16 eth_type;
3540         const u8 *dst_mac_mask = ff_mac;
3541         __be16 vlan_id_mask = htons(0xffff);
3542         bool copy_to_cpu = false;
3543         int err;
3544
3545         if (ntohs(vlan_id) == 0)
3546                 vlan_id = rocker_port->internal_vlan_id;
3547
3548         eth_type = htons(ETH_P_IP);
3549         err = rocker_flow_tbl_term_mac(rocker_port,
3550                                        rocker_port->pport, in_pport_mask,
3551                                        eth_type, rocker_port->dev->dev_addr,
3552                                        dst_mac_mask, vlan_id, vlan_id_mask,
3553                                        copy_to_cpu, flags);
3554         if (err)
3555                 return err;
3556
3557         eth_type = htons(ETH_P_IPV6);
3558         err = rocker_flow_tbl_term_mac(rocker_port,
3559                                        rocker_port->pport, in_pport_mask,
3560                                        eth_type, rocker_port->dev->dev_addr,
3561                                        dst_mac_mask, vlan_id, vlan_id_mask,
3562                                        copy_to_cpu, flags);
3563
3564         return err;
3565 }
3566
3567 static int rocker_port_fwding(struct rocker_port *rocker_port)
3568 {
3569         bool pop_vlan;
3570         u32 out_pport;
3571         __be16 vlan_id;
3572         u16 vid;
3573         int flags = ROCKER_OP_FLAG_NOWAIT;
3574         int err;
3575
3576         /* Port will be forwarding-enabled if its STP state is LEARNING
3577          * or FORWARDING.  Traffic from CPU can still egress, regardless of
3578          * port STP state.  Use L2 interface group on port VLANs as a way
3579          * to toggle port forwarding: if forwarding is disabled, L2
3580          * interface group will not exist.
3581          */
3582
3583         if (rocker_port->stp_state != BR_STATE_LEARNING &&
3584             rocker_port->stp_state != BR_STATE_FORWARDING)
3585                 flags |= ROCKER_OP_FLAG_REMOVE;
3586
3587         out_pport = rocker_port->pport;
3588         for (vid = 1; vid < VLAN_N_VID; vid++) {
3589                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3590                         continue;
3591                 vlan_id = htons(vid);
3592                 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3593                 err = rocker_group_l2_interface(rocker_port, flags,
3594                                                 vlan_id, out_pport,
3595                                                 pop_vlan);
3596                 if (err) {
3597                         netdev_err(rocker_port->dev,
3598                                    "Error (%d) port VLAN l2 group for pport %d\n",
3599                                    err, out_pport);
3600                         return err;
3601                 }
3602         }
3603
3604         return 0;
3605 }
3606
3607 static int rocker_port_stp_update(struct rocker_port *rocker_port, u8 state)
3608 {
3609         bool want[ROCKER_CTRL_MAX] = { 0, };
3610         int flags;
3611         int err;
3612         int i;
3613
3614         if (rocker_port->stp_state == state)
3615                 return 0;
3616
3617         rocker_port->stp_state = state;
3618
3619         switch (state) {
3620         case BR_STATE_DISABLED:
3621                 /* port is completely disabled */
3622                 break;
3623         case BR_STATE_LISTENING:
3624         case BR_STATE_BLOCKING:
3625                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3626                 break;
3627         case BR_STATE_LEARNING:
3628         case BR_STATE_FORWARDING:
3629                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3630                 want[ROCKER_CTRL_IPV4_MCAST] = true;
3631                 want[ROCKER_CTRL_IPV6_MCAST] = true;
3632                 if (rocker_port_is_bridged(rocker_port))
3633                         want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3634                 else
3635                         want[ROCKER_CTRL_LOCAL_ARP] = true;
3636                 break;
3637         }
3638
3639         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3640                 if (want[i] != rocker_port->ctrls[i]) {
3641                         flags = ROCKER_OP_FLAG_NOWAIT |
3642                                 (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3643                         err = rocker_port_ctrl(rocker_port, flags,
3644                                                &rocker_ctrls[i]);
3645                         if (err)
3646                                 return err;
3647                         rocker_port->ctrls[i] = want[i];
3648                 }
3649         }
3650
3651         err = rocker_port_fdb_flush(rocker_port);
3652         if (err)
3653                 return err;
3654
3655         return rocker_port_fwding(rocker_port);
3656 }
3657
3658 static int rocker_port_fwd_enable(struct rocker_port *rocker_port)
3659 {
3660         if (rocker_port_is_bridged(rocker_port))
3661                 /* bridge STP will enable port */
3662                 return 0;
3663
3664         /* port is not bridged, so simulate going to FORWARDING state */
3665         return rocker_port_stp_update(rocker_port, BR_STATE_FORWARDING);
3666 }
3667
3668 static int rocker_port_fwd_disable(struct rocker_port *rocker_port)
3669 {
3670         if (rocker_port_is_bridged(rocker_port))
3671                 /* bridge STP will disable port */
3672                 return 0;
3673
3674         /* port is not bridged, so simulate going to DISABLED state */
3675         return rocker_port_stp_update(rocker_port, BR_STATE_DISABLED);
3676 }
3677
3678 static struct rocker_internal_vlan_tbl_entry *
3679 rocker_internal_vlan_tbl_find(struct rocker *rocker, int ifindex)
3680 {
3681         struct rocker_internal_vlan_tbl_entry *found;
3682
3683         hash_for_each_possible(rocker->internal_vlan_tbl, found,
3684                                entry, ifindex) {
3685                 if (found->ifindex == ifindex)
3686                         return found;
3687         }
3688
3689         return NULL;
3690 }
3691
3692 static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
3693                                                int ifindex)
3694 {
3695         struct rocker *rocker = rocker_port->rocker;
3696         struct rocker_internal_vlan_tbl_entry *entry;
3697         struct rocker_internal_vlan_tbl_entry *found;
3698         unsigned long lock_flags;
3699         int i;
3700
3701         entry = kzalloc(sizeof(*entry), GFP_KERNEL);
3702         if (!entry)
3703                 return 0;
3704
3705         entry->ifindex = ifindex;
3706
3707         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3708
3709         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3710         if (found) {
3711                 kfree(entry);
3712                 goto found;
3713         }
3714
3715         found = entry;
3716         hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
3717
3718         for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
3719                 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
3720                         continue;
3721                 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
3722                 goto found;
3723         }
3724
3725         netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
3726
3727 found:
3728         found->ref_count++;
3729         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3730
3731         return found->vlan_id;
3732 }
3733
3734 static void rocker_port_internal_vlan_id_put(struct rocker_port *rocker_port,
3735                                              int ifindex)
3736 {
3737         struct rocker *rocker = rocker_port->rocker;
3738         struct rocker_internal_vlan_tbl_entry *found;
3739         unsigned long lock_flags;
3740         unsigned long bit;
3741
3742         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3743
3744         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3745         if (!found) {
3746                 netdev_err(rocker_port->dev,
3747                            "ifindex (%d) not found in internal VLAN tbl\n",
3748                            ifindex);
3749                 goto not_found;
3750         }
3751
3752         if (--found->ref_count <= 0) {
3753                 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
3754                 clear_bit(bit, rocker->internal_vlan_bitmap);
3755                 hash_del(&found->entry);
3756                 kfree(found);
3757         }
3758
3759 not_found:
3760         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3761 }
3762
3763 static int rocker_port_fib_ipv4(struct rocker_port *rocker_port, __be32 dst,
3764                                 int dst_len, struct fib_info *fi, u32 tb_id,
3765                                 int flags)
3766 {
3767         struct fib_nh *nh;
3768         __be16 eth_type = htons(ETH_P_IP);
3769         __be32 dst_mask = inet_make_mask(dst_len);
3770         __be16 internal_vlan_id = rocker_port->internal_vlan_id;
3771         u32 priority = fi->fib_priority;
3772         enum rocker_of_dpa_table_id goto_tbl =
3773                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3774         u32 group_id;
3775         bool nh_on_port;
3776         bool has_gw;
3777         u32 index;
3778         int err;
3779
3780         /* XXX support ECMP */
3781
3782         nh = fi->fib_nh;
3783         nh_on_port = (fi->fib_dev == rocker_port->dev);
3784         has_gw = !!nh->nh_gw;
3785
3786         if (has_gw && nh_on_port) {
3787                 err = rocker_port_ipv4_nh(rocker_port, flags,
3788                                           nh->nh_gw, &index);
3789                 if (err)
3790                         return err;
3791
3792                 group_id = ROCKER_GROUP_L3_UNICAST(index);
3793         } else {
3794                 /* Send to CPU for processing */
3795                 group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
3796         }
3797
3798         err = rocker_flow_tbl_ucast4_routing(rocker_port, eth_type, dst,
3799                                              dst_mask, priority, goto_tbl,
3800                                              group_id, flags);
3801         if (err)
3802                 netdev_err(rocker_port->dev, "Error (%d) IPv4 route %pI4\n",
3803                            err, &dst);
3804
3805         return err;
3806 }
3807
3808 /*****************
3809  * Net device ops
3810  *****************/
3811
3812 static int rocker_port_open(struct net_device *dev)
3813 {
3814         struct rocker_port *rocker_port = netdev_priv(dev);
3815         int err;
3816
3817         err = rocker_port_dma_rings_init(rocker_port);
3818         if (err)
3819                 return err;
3820
3821         err = request_irq(rocker_msix_tx_vector(rocker_port),
3822                           rocker_tx_irq_handler, 0,
3823                           rocker_driver_name, rocker_port);
3824         if (err) {
3825                 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
3826                 goto err_request_tx_irq;
3827         }
3828
3829         err = request_irq(rocker_msix_rx_vector(rocker_port),
3830                           rocker_rx_irq_handler, 0,
3831                           rocker_driver_name, rocker_port);
3832         if (err) {
3833                 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
3834                 goto err_request_rx_irq;
3835         }
3836
3837         err = rocker_port_fwd_enable(rocker_port);
3838         if (err)
3839                 goto err_fwd_enable;
3840
3841         napi_enable(&rocker_port->napi_tx);
3842         napi_enable(&rocker_port->napi_rx);
3843         rocker_port_set_enable(rocker_port, true);
3844         netif_start_queue(dev);
3845         return 0;
3846
3847 err_fwd_enable:
3848         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
3849 err_request_rx_irq:
3850         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3851 err_request_tx_irq:
3852         rocker_port_dma_rings_fini(rocker_port);
3853         return err;
3854 }
3855
3856 static int rocker_port_stop(struct net_device *dev)
3857 {
3858         struct rocker_port *rocker_port = netdev_priv(dev);
3859
3860         netif_stop_queue(dev);
3861         rocker_port_set_enable(rocker_port, false);
3862         napi_disable(&rocker_port->napi_rx);
3863         napi_disable(&rocker_port->napi_tx);
3864         rocker_port_fwd_disable(rocker_port);
3865         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
3866         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3867         rocker_port_dma_rings_fini(rocker_port);
3868
3869         return 0;
3870 }
3871
3872 static void rocker_tx_desc_frags_unmap(struct rocker_port *rocker_port,
3873                                        struct rocker_desc_info *desc_info)
3874 {
3875         struct rocker *rocker = rocker_port->rocker;
3876         struct pci_dev *pdev = rocker->pdev;
3877         struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
3878         struct rocker_tlv *attr;
3879         int rem;
3880
3881         rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
3882         if (!attrs[ROCKER_TLV_TX_FRAGS])
3883                 return;
3884         rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
3885                 struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
3886                 dma_addr_t dma_handle;
3887                 size_t len;
3888
3889                 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
3890                         continue;
3891                 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
3892                                         attr);
3893                 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
3894                     !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
3895                         continue;
3896                 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
3897                 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
3898                 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
3899         }
3900 }
3901
3902 static int rocker_tx_desc_frag_map_put(struct rocker_port *rocker_port,
3903                                        struct rocker_desc_info *desc_info,
3904                                        char *buf, size_t buf_len)
3905 {
3906         struct rocker *rocker = rocker_port->rocker;
3907         struct pci_dev *pdev = rocker->pdev;
3908         dma_addr_t dma_handle;
3909         struct rocker_tlv *frag;
3910
3911         dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
3912         if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
3913                 if (net_ratelimit())
3914                         netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
3915                 return -EIO;
3916         }
3917         frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
3918         if (!frag)
3919                 goto unmap_frag;
3920         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
3921                                dma_handle))
3922                 goto nest_cancel;
3923         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
3924                                buf_len))
3925                 goto nest_cancel;
3926         rocker_tlv_nest_end(desc_info, frag);
3927         return 0;
3928
3929 nest_cancel:
3930         rocker_tlv_nest_cancel(desc_info, frag);
3931 unmap_frag:
3932         pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
3933         return -EMSGSIZE;
3934 }
3935
3936 static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
3937 {
3938         struct rocker_port *rocker_port = netdev_priv(dev);
3939         struct rocker *rocker = rocker_port->rocker;
3940         struct rocker_desc_info *desc_info;
3941         struct rocker_tlv *frags;
3942         int i;
3943         int err;
3944
3945         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
3946         if (unlikely(!desc_info)) {
3947                 if (net_ratelimit())
3948                         netdev_err(dev, "tx ring full when queue awake\n");
3949                 return NETDEV_TX_BUSY;
3950         }
3951
3952         rocker_desc_cookie_ptr_set(desc_info, skb);
3953
3954         frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
3955         if (!frags)
3956                 goto out;
3957         err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
3958                                           skb->data, skb_headlen(skb));
3959         if (err)
3960                 goto nest_cancel;
3961         if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX)
3962                 goto nest_cancel;
3963
3964         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3965                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
3966
3967                 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
3968                                                   skb_frag_address(frag),
3969                                                   skb_frag_size(frag));
3970                 if (err)
3971                         goto unmap_frags;
3972         }
3973         rocker_tlv_nest_end(desc_info, frags);
3974
3975         rocker_desc_gen_clear(desc_info);
3976         rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
3977
3978         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
3979         if (!desc_info)
3980                 netif_stop_queue(dev);
3981
3982         return NETDEV_TX_OK;
3983
3984 unmap_frags:
3985         rocker_tx_desc_frags_unmap(rocker_port, desc_info);
3986 nest_cancel:
3987         rocker_tlv_nest_cancel(desc_info, frags);
3988 out:
3989         dev_kfree_skb(skb);
3990         dev->stats.tx_dropped++;
3991
3992         return NETDEV_TX_OK;
3993 }
3994
3995 static int rocker_port_set_mac_address(struct net_device *dev, void *p)
3996 {
3997         struct sockaddr *addr = p;
3998         struct rocker_port *rocker_port = netdev_priv(dev);
3999         int err;
4000
4001         if (!is_valid_ether_addr(addr->sa_data))
4002                 return -EADDRNOTAVAIL;
4003
4004         err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
4005         if (err)
4006                 return err;
4007         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
4008         return 0;
4009 }
4010
4011 static int rocker_port_vlan_rx_add_vid(struct net_device *dev,
4012                                        __be16 proto, u16 vid)
4013 {
4014         struct rocker_port *rocker_port = netdev_priv(dev);
4015         int err;
4016
4017         err = rocker_port_vlan(rocker_port, 0, vid);
4018         if (err)
4019                 return err;
4020
4021         return rocker_port_router_mac(rocker_port, 0, htons(vid));
4022 }
4023
4024 static int rocker_port_vlan_rx_kill_vid(struct net_device *dev,
4025                                         __be16 proto, u16 vid)
4026 {
4027         struct rocker_port *rocker_port = netdev_priv(dev);
4028         int err;
4029
4030         err = rocker_port_router_mac(rocker_port, ROCKER_OP_FLAG_REMOVE,
4031                                      htons(vid));
4032         if (err)
4033                 return err;
4034
4035         return rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, vid);
4036 }
4037
4038 static int rocker_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
4039                                struct net_device *dev,
4040                                const unsigned char *addr, u16 vid,
4041                                u16 nlm_flags)
4042 {
4043         struct rocker_port *rocker_port = netdev_priv(dev);
4044         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
4045         int flags = 0;
4046
4047         if (!rocker_port_is_bridged(rocker_port))
4048                 return -EINVAL;
4049
4050         return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
4051 }
4052
4053 static int rocker_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
4054                                struct net_device *dev,
4055                                const unsigned char *addr, u16 vid)
4056 {
4057         struct rocker_port *rocker_port = netdev_priv(dev);
4058         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
4059         int flags = ROCKER_OP_FLAG_REMOVE;
4060
4061         if (!rocker_port_is_bridged(rocker_port))
4062                 return -EINVAL;
4063
4064         return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
4065 }
4066
4067 static int rocker_fdb_fill_info(struct sk_buff *skb,
4068                                 struct rocker_port *rocker_port,
4069                                 const unsigned char *addr, u16 vid,
4070                                 u32 portid, u32 seq, int type,
4071                                 unsigned int flags)
4072 {
4073         struct nlmsghdr *nlh;
4074         struct ndmsg *ndm;
4075
4076         nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags);
4077         if (!nlh)
4078                 return -EMSGSIZE;
4079
4080         ndm = nlmsg_data(nlh);
4081         ndm->ndm_family  = AF_BRIDGE;
4082         ndm->ndm_pad1    = 0;
4083         ndm->ndm_pad2    = 0;
4084         ndm->ndm_flags   = NTF_SELF;
4085         ndm->ndm_type    = 0;
4086         ndm->ndm_ifindex = rocker_port->dev->ifindex;
4087         ndm->ndm_state   = NUD_REACHABLE;
4088
4089         if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
4090                 goto nla_put_failure;
4091
4092         if (vid && nla_put_u16(skb, NDA_VLAN, vid))
4093                 goto nla_put_failure;
4094
4095         nlmsg_end(skb, nlh);
4096         return 0;
4097
4098 nla_put_failure:
4099         nlmsg_cancel(skb, nlh);
4100         return -EMSGSIZE;
4101 }
4102
4103 static int rocker_port_fdb_dump(struct sk_buff *skb,
4104                                 struct netlink_callback *cb,
4105                                 struct net_device *dev,
4106                                 struct net_device *filter_dev,
4107                                 int idx)
4108 {
4109         struct rocker_port *rocker_port = netdev_priv(dev);
4110         struct rocker *rocker = rocker_port->rocker;
4111         struct rocker_fdb_tbl_entry *found;
4112         struct hlist_node *tmp;
4113         int bkt;
4114         unsigned long lock_flags;
4115         const unsigned char *addr;
4116         u16 vid;
4117         int err;
4118
4119         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
4120         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
4121                 if (found->key.pport != rocker_port->pport)
4122                         continue;
4123                 if (idx < cb->args[0])
4124                         goto skip;
4125                 addr = found->key.addr;
4126                 vid = rocker_port_vlan_to_vid(rocker_port, found->key.vlan_id);
4127                 err = rocker_fdb_fill_info(skb, rocker_port, addr, vid,
4128                                            NETLINK_CB(cb->skb).portid,
4129                                            cb->nlh->nlmsg_seq,
4130                                            RTM_NEWNEIGH, NLM_F_MULTI);
4131                 if (err < 0)
4132                         break;
4133 skip:
4134                 ++idx;
4135         }
4136         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
4137         return idx;
4138 }
4139
4140 static int rocker_port_bridge_setlink(struct net_device *dev,
4141                                       struct nlmsghdr *nlh, u16 flags)
4142 {
4143         struct rocker_port *rocker_port = netdev_priv(dev);
4144         struct nlattr *protinfo;
4145         struct nlattr *attr;
4146         int err;
4147
4148         protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg),
4149                                    IFLA_PROTINFO);
4150         if (protinfo) {
4151                 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING);
4152                 if (attr) {
4153                         if (nla_len(attr) < sizeof(u8))
4154                                 return -EINVAL;
4155
4156                         if (nla_get_u8(attr))
4157                                 rocker_port->brport_flags |= BR_LEARNING;
4158                         else
4159                                 rocker_port->brport_flags &= ~BR_LEARNING;
4160                         err = rocker_port_set_learning(rocker_port);
4161                         if (err)
4162                                 return err;
4163                 }
4164                 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING_SYNC);
4165                 if (attr) {
4166                         if (nla_len(attr) < sizeof(u8))
4167                                 return -EINVAL;
4168
4169                         if (nla_get_u8(attr))
4170                                 rocker_port->brport_flags |= BR_LEARNING_SYNC;
4171                         else
4172                                 rocker_port->brport_flags &= ~BR_LEARNING_SYNC;
4173                 }
4174         }
4175
4176         return 0;
4177 }
4178
4179 static int rocker_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
4180                                       struct net_device *dev,
4181                                       u32 filter_mask, int nlflags)
4182 {
4183         struct rocker_port *rocker_port = netdev_priv(dev);
4184         u16 mode = BRIDGE_MODE_UNDEF;
4185         u32 mask = BR_LEARNING | BR_LEARNING_SYNC;
4186
4187         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode,
4188                                        rocker_port->brport_flags, mask,
4189                                        nlflags);
4190 }
4191
4192 static int rocker_port_get_phys_port_name(struct net_device *dev,
4193                                           char *buf, size_t len)
4194 {
4195         struct rocker_port *rocker_port = netdev_priv(dev);
4196         struct port_name name = { .buf = buf, .len = len };
4197         int err;
4198
4199         err = rocker_cmd_exec(rocker_port->rocker, rocker_port,
4200                               rocker_cmd_get_port_settings_prep, NULL,
4201                               rocker_cmd_get_port_settings_phys_name_proc,
4202                               &name, false);
4203
4204         return err ? -EOPNOTSUPP : 0;
4205 }
4206
4207 static const struct net_device_ops rocker_port_netdev_ops = {
4208         .ndo_open                       = rocker_port_open,
4209         .ndo_stop                       = rocker_port_stop,
4210         .ndo_start_xmit                 = rocker_port_xmit,
4211         .ndo_set_mac_address            = rocker_port_set_mac_address,
4212         .ndo_vlan_rx_add_vid            = rocker_port_vlan_rx_add_vid,
4213         .ndo_vlan_rx_kill_vid           = rocker_port_vlan_rx_kill_vid,
4214         .ndo_fdb_add                    = rocker_port_fdb_add,
4215         .ndo_fdb_del                    = rocker_port_fdb_del,
4216         .ndo_fdb_dump                   = rocker_port_fdb_dump,
4217         .ndo_bridge_setlink             = rocker_port_bridge_setlink,
4218         .ndo_bridge_getlink             = rocker_port_bridge_getlink,
4219         .ndo_get_phys_port_name         = rocker_port_get_phys_port_name,
4220 };
4221
4222 /********************
4223  * swdev interface
4224  ********************/
4225
4226 static int rocker_port_swdev_parent_id_get(struct net_device *dev,
4227                                            struct netdev_phys_item_id *psid)
4228 {
4229         struct rocker_port *rocker_port = netdev_priv(dev);
4230         struct rocker *rocker = rocker_port->rocker;
4231
4232         psid->id_len = sizeof(rocker->hw.id);
4233         memcpy(&psid->id, &rocker->hw.id, psid->id_len);
4234         return 0;
4235 }
4236
4237 static int rocker_port_swdev_port_stp_update(struct net_device *dev, u8 state)
4238 {
4239         struct rocker_port *rocker_port = netdev_priv(dev);
4240
4241         return rocker_port_stp_update(rocker_port, state);
4242 }
4243
4244 static int rocker_port_swdev_fib_ipv4_add(struct net_device *dev,
4245                                           __be32 dst, int dst_len,
4246                                           struct fib_info *fi,
4247                                           u8 tos, u8 type,
4248                                           u32 nlflags, u32 tb_id)
4249 {
4250         struct rocker_port *rocker_port = netdev_priv(dev);
4251         int flags = 0;
4252
4253         return rocker_port_fib_ipv4(rocker_port, dst, dst_len,
4254                                     fi, tb_id, flags);
4255 }
4256
4257 static int rocker_port_swdev_fib_ipv4_del(struct net_device *dev,
4258                                           __be32 dst, int dst_len,
4259                                           struct fib_info *fi,
4260                                           u8 tos, u8 type, u32 tb_id)
4261 {
4262         struct rocker_port *rocker_port = netdev_priv(dev);
4263         int flags = ROCKER_OP_FLAG_REMOVE;
4264
4265         return rocker_port_fib_ipv4(rocker_port, dst, dst_len,
4266                                     fi, tb_id, flags);
4267 }
4268
4269 static const struct swdev_ops rocker_port_swdev_ops = {
4270         .swdev_parent_id_get            = rocker_port_swdev_parent_id_get,
4271         .swdev_port_stp_update          = rocker_port_swdev_port_stp_update,
4272         .swdev_fib_ipv4_add             = rocker_port_swdev_fib_ipv4_add,
4273         .swdev_fib_ipv4_del             = rocker_port_swdev_fib_ipv4_del,
4274 };
4275
4276 /********************
4277  * ethtool interface
4278  ********************/
4279
4280 static int rocker_port_get_settings(struct net_device *dev,
4281                                     struct ethtool_cmd *ecmd)
4282 {
4283         struct rocker_port *rocker_port = netdev_priv(dev);
4284
4285         return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
4286 }
4287
4288 static int rocker_port_set_settings(struct net_device *dev,
4289                                     struct ethtool_cmd *ecmd)
4290 {
4291         struct rocker_port *rocker_port = netdev_priv(dev);
4292
4293         return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
4294 }
4295
4296 static void rocker_port_get_drvinfo(struct net_device *dev,
4297                                     struct ethtool_drvinfo *drvinfo)
4298 {
4299         strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
4300         strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
4301 }
4302
4303 static struct rocker_port_stats {
4304         char str[ETH_GSTRING_LEN];
4305         int type;
4306 } rocker_port_stats[] = {
4307         { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS,    },
4308         { "rx_bytes",   ROCKER_TLV_CMD_PORT_STATS_RX_BYTES,   },
4309         { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
4310         { "rx_errors",  ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS,  },
4311
4312         { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS,    },
4313         { "tx_bytes",   ROCKER_TLV_CMD_PORT_STATS_TX_BYTES,   },
4314         { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
4315         { "tx_errors",  ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS,  },
4316 };
4317
4318 #define ROCKER_PORT_STATS_LEN  ARRAY_SIZE(rocker_port_stats)
4319
4320 static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
4321                                     u8 *data)
4322 {
4323         u8 *p = data;
4324         int i;
4325
4326         switch (stringset) {
4327         case ETH_SS_STATS:
4328                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4329                         memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
4330                         p += ETH_GSTRING_LEN;
4331                 }
4332                 break;
4333         }
4334 }
4335
4336 static int
4337 rocker_cmd_get_port_stats_prep(struct rocker *rocker,
4338                                struct rocker_port *rocker_port,
4339                                struct rocker_desc_info *desc_info,
4340                                void *priv)
4341 {
4342         struct rocker_tlv *cmd_stats;
4343
4344         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
4345                                ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
4346                 return -EMSGSIZE;
4347
4348         cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
4349         if (!cmd_stats)
4350                 return -EMSGSIZE;
4351
4352         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT,
4353                                rocker_port->pport))
4354                 return -EMSGSIZE;
4355
4356         rocker_tlv_nest_end(desc_info, cmd_stats);
4357
4358         return 0;
4359 }
4360
4361 static int
4362 rocker_cmd_get_port_stats_ethtool_proc(struct rocker *rocker,
4363                                        struct rocker_port *rocker_port,
4364                                        struct rocker_desc_info *desc_info,
4365                                        void *priv)
4366 {
4367         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
4368         struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
4369         struct rocker_tlv *pattr;
4370         u32 pport;
4371         u64 *data = priv;
4372         int i;
4373
4374         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
4375
4376         if (!attrs[ROCKER_TLV_CMD_INFO])
4377                 return -EIO;
4378
4379         rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
4380                                 attrs[ROCKER_TLV_CMD_INFO]);
4381
4382         if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT])
4383                 return -EIO;
4384
4385         pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]);
4386         if (pport != rocker_port->pport)
4387                 return -EIO;
4388
4389         for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4390                 pattr = stats_attrs[rocker_port_stats[i].type];
4391                 if (!pattr)
4392                         continue;
4393
4394                 data[i] = rocker_tlv_get_u64(pattr);
4395         }
4396
4397         return 0;
4398 }
4399
4400 static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
4401                                              void *priv)
4402 {
4403         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
4404                                rocker_cmd_get_port_stats_prep, NULL,
4405                                rocker_cmd_get_port_stats_ethtool_proc,
4406                                priv, false);
4407 }
4408
4409 static void rocker_port_get_stats(struct net_device *dev,
4410                                   struct ethtool_stats *stats, u64 *data)
4411 {
4412         struct rocker_port *rocker_port = netdev_priv(dev);
4413
4414         if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
4415                 int i;
4416
4417                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
4418                         data[i] = 0;
4419         }
4420
4421         return;
4422 }
4423
4424 static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
4425 {
4426         switch (sset) {
4427         case ETH_SS_STATS:
4428                 return ROCKER_PORT_STATS_LEN;
4429         default:
4430                 return -EOPNOTSUPP;
4431         }
4432 }
4433
4434 static const struct ethtool_ops rocker_port_ethtool_ops = {
4435         .get_settings           = rocker_port_get_settings,
4436         .set_settings           = rocker_port_set_settings,
4437         .get_drvinfo            = rocker_port_get_drvinfo,
4438         .get_link               = ethtool_op_get_link,
4439         .get_strings            = rocker_port_get_strings,
4440         .get_ethtool_stats      = rocker_port_get_stats,
4441         .get_sset_count         = rocker_port_get_sset_count,
4442 };
4443
4444 /*****************
4445  * NAPI interface
4446  *****************/
4447
4448 static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
4449 {
4450         return container_of(napi, struct rocker_port, napi_tx);
4451 }
4452
4453 static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
4454 {
4455         struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
4456         struct rocker *rocker = rocker_port->rocker;
4457         struct rocker_desc_info *desc_info;
4458         u32 credits = 0;
4459         int err;
4460
4461         /* Cleanup tx descriptors */
4462         while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
4463                 struct sk_buff *skb;
4464
4465                 err = rocker_desc_err(desc_info);
4466                 if (err && net_ratelimit())
4467                         netdev_err(rocker_port->dev, "tx desc received with err %d\n",
4468                                    err);
4469                 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4470
4471                 skb = rocker_desc_cookie_ptr_get(desc_info);
4472                 if (err == 0) {
4473                         rocker_port->dev->stats.tx_packets++;
4474                         rocker_port->dev->stats.tx_bytes += skb->len;
4475                 } else
4476                         rocker_port->dev->stats.tx_errors++;
4477
4478                 dev_kfree_skb_any(skb);
4479                 credits++;
4480         }
4481
4482         if (credits && netif_queue_stopped(rocker_port->dev))
4483                 netif_wake_queue(rocker_port->dev);
4484
4485         napi_complete(napi);
4486         rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
4487
4488         return 0;
4489 }
4490
4491 static int rocker_port_rx_proc(struct rocker *rocker,
4492                                struct rocker_port *rocker_port,
4493                                struct rocker_desc_info *desc_info)
4494 {
4495         struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
4496         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
4497         size_t rx_len;
4498
4499         if (!skb)
4500                 return -ENOENT;
4501
4502         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
4503         if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
4504                 return -EINVAL;
4505
4506         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
4507
4508         rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
4509         skb_put(skb, rx_len);
4510         skb->protocol = eth_type_trans(skb, rocker_port->dev);
4511
4512         rocker_port->dev->stats.rx_packets++;
4513         rocker_port->dev->stats.rx_bytes += skb->len;
4514
4515         netif_receive_skb(skb);
4516
4517         return rocker_dma_rx_ring_skb_alloc(rocker, rocker_port, desc_info);
4518 }
4519
4520 static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
4521 {
4522         return container_of(napi, struct rocker_port, napi_rx);
4523 }
4524
4525 static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
4526 {
4527         struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
4528         struct rocker *rocker = rocker_port->rocker;
4529         struct rocker_desc_info *desc_info;
4530         u32 credits = 0;
4531         int err;
4532
4533         /* Process rx descriptors */
4534         while (credits < budget &&
4535                (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
4536                 err = rocker_desc_err(desc_info);
4537                 if (err) {
4538                         if (net_ratelimit())
4539                                 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
4540                                            err);
4541                 } else {
4542                         err = rocker_port_rx_proc(rocker, rocker_port,
4543                                                   desc_info);
4544                         if (err && net_ratelimit())
4545                                 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
4546                                            err);
4547                 }
4548                 if (err)
4549                         rocker_port->dev->stats.rx_errors++;
4550
4551                 rocker_desc_gen_clear(desc_info);
4552                 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
4553                 credits++;
4554         }
4555
4556         if (credits < budget)
4557                 napi_complete(napi);
4558
4559         rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
4560
4561         return credits;
4562 }
4563
4564 /*****************
4565  * PCI driver ops
4566  *****************/
4567
4568 static void rocker_carrier_init(struct rocker_port *rocker_port)
4569 {
4570         struct rocker *rocker = rocker_port->rocker;
4571         u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
4572         bool link_up;
4573
4574         link_up = link_status & (1 << rocker_port->pport);
4575         if (link_up)
4576                 netif_carrier_on(rocker_port->dev);
4577         else
4578                 netif_carrier_off(rocker_port->dev);
4579 }
4580
4581 static void rocker_remove_ports(struct rocker *rocker)
4582 {
4583         struct rocker_port *rocker_port;
4584         int i;
4585
4586         for (i = 0; i < rocker->port_count; i++) {
4587                 rocker_port = rocker->ports[i];
4588                 rocker_port_ig_tbl(rocker_port, ROCKER_OP_FLAG_REMOVE);
4589                 unregister_netdev(rocker_port->dev);
4590                 free_netdev(rocker_port->dev);
4591         }
4592         kfree(rocker->ports);
4593 }
4594
4595 static void rocker_port_dev_addr_init(struct rocker *rocker,
4596                                       struct rocker_port *rocker_port)
4597 {
4598         struct pci_dev *pdev = rocker->pdev;
4599         int err;
4600
4601         err = rocker_cmd_get_port_settings_macaddr(rocker_port,
4602                                                    rocker_port->dev->dev_addr);
4603         if (err) {
4604                 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
4605                 eth_hw_addr_random(rocker_port->dev);
4606         }
4607 }
4608
4609 static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
4610 {
4611         struct pci_dev *pdev = rocker->pdev;
4612         struct rocker_port *rocker_port;
4613         struct net_device *dev;
4614         int err;
4615
4616         dev = alloc_etherdev(sizeof(struct rocker_port));
4617         if (!dev)
4618                 return -ENOMEM;
4619         rocker_port = netdev_priv(dev);
4620         rocker_port->dev = dev;
4621         rocker_port->rocker = rocker;
4622         rocker_port->port_number = port_number;
4623         rocker_port->pport = port_number + 1;
4624         rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
4625
4626         rocker_port_dev_addr_init(rocker, rocker_port);
4627         dev->netdev_ops = &rocker_port_netdev_ops;
4628         dev->ethtool_ops = &rocker_port_ethtool_ops;
4629         dev->swdev_ops = &rocker_port_swdev_ops;
4630         netif_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
4631                        NAPI_POLL_WEIGHT);
4632         netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
4633                        NAPI_POLL_WEIGHT);
4634         rocker_carrier_init(rocker_port);
4635
4636         dev->features |= NETIF_F_NETNS_LOCAL |
4637                          NETIF_F_HW_VLAN_CTAG_FILTER |
4638                          NETIF_F_HW_SWITCH_OFFLOAD;
4639
4640         err = register_netdev(dev);
4641         if (err) {
4642                 dev_err(&pdev->dev, "register_netdev failed\n");
4643                 goto err_register_netdev;
4644         }
4645         rocker->ports[port_number] = rocker_port;
4646
4647         rocker_port_set_learning(rocker_port);
4648
4649         rocker_port->internal_vlan_id =
4650                 rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
4651         err = rocker_port_ig_tbl(rocker_port, 0);
4652         if (err) {
4653                 dev_err(&pdev->dev, "install ig port table failed\n");
4654                 goto err_port_ig_tbl;
4655         }
4656
4657         return 0;
4658
4659 err_port_ig_tbl:
4660         unregister_netdev(dev);
4661 err_register_netdev:
4662         free_netdev(dev);
4663         return err;
4664 }
4665
4666 static int rocker_probe_ports(struct rocker *rocker)
4667 {
4668         int i;
4669         size_t alloc_size;
4670         int err;
4671
4672         alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
4673         rocker->ports = kmalloc(alloc_size, GFP_KERNEL);
4674         if (!rocker->ports)
4675                 return -ENOMEM;
4676         for (i = 0; i < rocker->port_count; i++) {
4677                 err = rocker_probe_port(rocker, i);
4678                 if (err)
4679                         goto remove_ports;
4680         }
4681         return 0;
4682
4683 remove_ports:
4684         rocker_remove_ports(rocker);
4685         return err;
4686 }
4687
4688 static int rocker_msix_init(struct rocker *rocker)
4689 {
4690         struct pci_dev *pdev = rocker->pdev;
4691         int msix_entries;
4692         int i;
4693         int err;
4694
4695         msix_entries = pci_msix_vec_count(pdev);
4696         if (msix_entries < 0)
4697                 return msix_entries;
4698
4699         if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
4700                 return -EINVAL;
4701
4702         rocker->msix_entries = kmalloc_array(msix_entries,
4703                                              sizeof(struct msix_entry),
4704                                              GFP_KERNEL);
4705         if (!rocker->msix_entries)
4706                 return -ENOMEM;
4707
4708         for (i = 0; i < msix_entries; i++)
4709                 rocker->msix_entries[i].entry = i;
4710
4711         err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
4712         if (err < 0)
4713                 goto err_enable_msix;
4714
4715         return 0;
4716
4717 err_enable_msix:
4718         kfree(rocker->msix_entries);
4719         return err;
4720 }
4721
4722 static void rocker_msix_fini(struct rocker *rocker)
4723 {
4724         pci_disable_msix(rocker->pdev);
4725         kfree(rocker->msix_entries);
4726 }
4727
4728 static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
4729 {
4730         struct rocker *rocker;
4731         int err;
4732
4733         rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
4734         if (!rocker)
4735                 return -ENOMEM;
4736
4737         err = pci_enable_device(pdev);
4738         if (err) {
4739                 dev_err(&pdev->dev, "pci_enable_device failed\n");
4740                 goto err_pci_enable_device;
4741         }
4742
4743         err = pci_request_regions(pdev, rocker_driver_name);
4744         if (err) {
4745                 dev_err(&pdev->dev, "pci_request_regions failed\n");
4746                 goto err_pci_request_regions;
4747         }
4748
4749         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4750         if (!err) {
4751                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4752                 if (err) {
4753                         dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
4754                         goto err_pci_set_dma_mask;
4755                 }
4756         } else {
4757                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4758                 if (err) {
4759                         dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
4760                         goto err_pci_set_dma_mask;
4761                 }
4762         }
4763
4764         if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
4765                 dev_err(&pdev->dev, "invalid PCI region size\n");
4766                 err = -EINVAL;
4767                 goto err_pci_resource_len_check;
4768         }
4769
4770         rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
4771                                   pci_resource_len(pdev, 0));
4772         if (!rocker->hw_addr) {
4773                 dev_err(&pdev->dev, "ioremap failed\n");
4774                 err = -EIO;
4775                 goto err_ioremap;
4776         }
4777         pci_set_master(pdev);
4778
4779         rocker->pdev = pdev;
4780         pci_set_drvdata(pdev, rocker);
4781
4782         rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
4783
4784         err = rocker_msix_init(rocker);
4785         if (err) {
4786                 dev_err(&pdev->dev, "MSI-X init failed\n");
4787                 goto err_msix_init;
4788         }
4789
4790         err = rocker_basic_hw_test(rocker);
4791         if (err) {
4792                 dev_err(&pdev->dev, "basic hw test failed\n");
4793                 goto err_basic_hw_test;
4794         }
4795
4796         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
4797
4798         err = rocker_dma_rings_init(rocker);
4799         if (err)
4800                 goto err_dma_rings_init;
4801
4802         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
4803                           rocker_cmd_irq_handler, 0,
4804                           rocker_driver_name, rocker);
4805         if (err) {
4806                 dev_err(&pdev->dev, "cannot assign cmd irq\n");
4807                 goto err_request_cmd_irq;
4808         }
4809
4810         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
4811                           rocker_event_irq_handler, 0,
4812                           rocker_driver_name, rocker);
4813         if (err) {
4814                 dev_err(&pdev->dev, "cannot assign event irq\n");
4815                 goto err_request_event_irq;
4816         }
4817
4818         rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
4819
4820         err = rocker_init_tbls(rocker);
4821         if (err) {
4822                 dev_err(&pdev->dev, "cannot init rocker tables\n");
4823                 goto err_init_tbls;
4824         }
4825
4826         err = rocker_probe_ports(rocker);
4827         if (err) {
4828                 dev_err(&pdev->dev, "failed to probe ports\n");
4829                 goto err_probe_ports;
4830         }
4831
4832         dev_info(&pdev->dev, "Rocker switch with id %016llx\n", rocker->hw.id);
4833
4834         return 0;
4835
4836 err_probe_ports:
4837         rocker_free_tbls(rocker);
4838 err_init_tbls:
4839         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
4840 err_request_event_irq:
4841         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
4842 err_request_cmd_irq:
4843         rocker_dma_rings_fini(rocker);
4844 err_dma_rings_init:
4845 err_basic_hw_test:
4846         rocker_msix_fini(rocker);
4847 err_msix_init:
4848         iounmap(rocker->hw_addr);
4849 err_ioremap:
4850 err_pci_resource_len_check:
4851 err_pci_set_dma_mask:
4852         pci_release_regions(pdev);
4853 err_pci_request_regions:
4854         pci_disable_device(pdev);
4855 err_pci_enable_device:
4856         kfree(rocker);
4857         return err;
4858 }
4859
4860 static void rocker_remove(struct pci_dev *pdev)
4861 {
4862         struct rocker *rocker = pci_get_drvdata(pdev);
4863
4864         rocker_free_tbls(rocker);
4865         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
4866         rocker_remove_ports(rocker);
4867         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
4868         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
4869         rocker_dma_rings_fini(rocker);
4870         rocker_msix_fini(rocker);
4871         iounmap(rocker->hw_addr);
4872         pci_release_regions(rocker->pdev);
4873         pci_disable_device(rocker->pdev);
4874         kfree(rocker);
4875 }
4876
4877 static struct pci_driver rocker_pci_driver = {
4878         .name           = rocker_driver_name,
4879         .id_table       = rocker_pci_id_table,
4880         .probe          = rocker_probe,
4881         .remove         = rocker_remove,
4882 };
4883
4884 /************************************
4885  * Net device notifier event handler
4886  ************************************/
4887
4888 static bool rocker_port_dev_check(struct net_device *dev)
4889 {
4890         return dev->netdev_ops == &rocker_port_netdev_ops;
4891 }
4892
4893 static int rocker_port_bridge_join(struct rocker_port *rocker_port,
4894                                    struct net_device *bridge)
4895 {
4896         int err;
4897
4898         rocker_port_internal_vlan_id_put(rocker_port,
4899                                          rocker_port->dev->ifindex);
4900
4901         rocker_port->bridge_dev = bridge;
4902
4903         /* Use bridge internal VLAN ID for untagged pkts */
4904         err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0);
4905         if (err)
4906                 return err;
4907         rocker_port->internal_vlan_id =
4908                 rocker_port_internal_vlan_id_get(rocker_port,
4909                                                  bridge->ifindex);
4910         return rocker_port_vlan(rocker_port, 0, 0);
4911 }
4912
4913 static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
4914 {
4915         int err;
4916
4917         rocker_port_internal_vlan_id_put(rocker_port,
4918                                          rocker_port->bridge_dev->ifindex);
4919
4920         rocker_port->bridge_dev = NULL;
4921
4922         /* Use port internal VLAN ID for untagged pkts */
4923         err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0);
4924         if (err)
4925                 return err;
4926         rocker_port->internal_vlan_id =
4927                 rocker_port_internal_vlan_id_get(rocker_port,
4928                                                  rocker_port->dev->ifindex);
4929         err = rocker_port_vlan(rocker_port, 0, 0);
4930         if (err)
4931                 return err;
4932
4933         if (rocker_port->dev->flags & IFF_UP)
4934                 err = rocker_port_fwd_enable(rocker_port);
4935
4936         return err;
4937 }
4938
4939 static int rocker_port_master_changed(struct net_device *dev)
4940 {
4941         struct rocker_port *rocker_port = netdev_priv(dev);
4942         struct net_device *master = netdev_master_upper_dev_get(dev);
4943         int err = 0;
4944
4945         /* There are currently three cases handled here:
4946          * 1. Joining a bridge
4947          * 2. Leaving a previously joined bridge
4948          * 3. Other, e.g. being added to or removed from a bond or openvswitch,
4949          *    in which case nothing is done
4950          */
4951         if (master && master->rtnl_link_ops &&
4952             !strcmp(master->rtnl_link_ops->kind, "bridge"))
4953                 err = rocker_port_bridge_join(rocker_port, master);
4954         else if (rocker_port_is_bridged(rocker_port))
4955                 err = rocker_port_bridge_leave(rocker_port);
4956
4957         return err;
4958 }
4959
4960 static int rocker_netdevice_event(struct notifier_block *unused,
4961                                   unsigned long event, void *ptr)
4962 {
4963         struct net_device *dev;
4964         int err;
4965
4966         switch (event) {
4967         case NETDEV_CHANGEUPPER:
4968                 dev = netdev_notifier_info_to_dev(ptr);
4969                 if (!rocker_port_dev_check(dev))
4970                         return NOTIFY_DONE;
4971                 err = rocker_port_master_changed(dev);
4972                 if (err)
4973                         netdev_warn(dev,
4974                                     "failed to reflect master change (err %d)\n",
4975                                     err);
4976                 break;
4977         }
4978
4979         return NOTIFY_DONE;
4980 }
4981
4982 static struct notifier_block rocker_netdevice_nb __read_mostly = {
4983         .notifier_call = rocker_netdevice_event,
4984 };
4985
4986 /************************************
4987  * Net event notifier event handler
4988  ************************************/
4989
4990 static int rocker_neigh_update(struct net_device *dev, struct neighbour *n)
4991 {
4992         struct rocker_port *rocker_port = netdev_priv(dev);
4993         int flags = (n->nud_state & NUD_VALID) ? 0 : ROCKER_OP_FLAG_REMOVE;
4994         __be32 ip_addr = *(__be32 *)n->primary_key;
4995
4996         return rocker_port_ipv4_neigh(rocker_port, flags, ip_addr, n->ha);
4997 }
4998
4999 static int rocker_netevent_event(struct notifier_block *unused,
5000                                  unsigned long event, void *ptr)
5001 {
5002         struct net_device *dev;
5003         struct neighbour *n = ptr;
5004         int err;
5005
5006         switch (event) {
5007         case NETEVENT_NEIGH_UPDATE:
5008                 if (n->tbl != &arp_tbl)
5009                         return NOTIFY_DONE;
5010                 dev = n->dev;
5011                 if (!rocker_port_dev_check(dev))
5012                         return NOTIFY_DONE;
5013                 err = rocker_neigh_update(dev, n);
5014                 if (err)
5015                         netdev_warn(dev,
5016                                     "failed to handle neigh update (err %d)\n",
5017                                     err);
5018                 break;
5019         }
5020
5021         return NOTIFY_DONE;
5022 }
5023
5024 static struct notifier_block rocker_netevent_nb __read_mostly = {
5025         .notifier_call = rocker_netevent_event,
5026 };
5027
5028 /***********************
5029  * Module init and exit
5030  ***********************/
5031
5032 static int __init rocker_module_init(void)
5033 {
5034         int err;
5035
5036         register_netdevice_notifier(&rocker_netdevice_nb);
5037         register_netevent_notifier(&rocker_netevent_nb);
5038         err = pci_register_driver(&rocker_pci_driver);
5039         if (err)
5040                 goto err_pci_register_driver;
5041         return 0;
5042
5043 err_pci_register_driver:
5044         unregister_netdevice_notifier(&rocker_netevent_nb);
5045         unregister_netdevice_notifier(&rocker_netdevice_nb);
5046         return err;
5047 }
5048
5049 static void __exit rocker_module_exit(void)
5050 {
5051         unregister_netevent_notifier(&rocker_netevent_nb);
5052         unregister_netdevice_notifier(&rocker_netdevice_nb);
5053         pci_unregister_driver(&rocker_pci_driver);
5054 }
5055
5056 module_init(rocker_module_init);
5057 module_exit(rocker_module_exit);
5058
5059 MODULE_LICENSE("GPL v2");
5060 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
5061 MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
5062 MODULE_DESCRIPTION("Rocker switch device driver");
5063 MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);