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 <net/switchdev.h>
  34 #include <net/rtnetlink.h>
  35 #include <net/ip_fib.h>
  36 #include <net/netevent.h>
  37 #include <net/arp.h>
  38 #include <asm-generic/io-64-nonatomic-lo-hi.h>
  39 #include <generated/utsrelease.h>
  40
  41 #include "rocker.h"
  42
  43 static const char rocker_driver_name[] = "rocker";
  44
  45 static const struct pci_device_id rocker_pci_id_table[] = {
  46         {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0},
  47         {0, }
  48 };
  49
  50 struct rocker_flow_tbl_key {
  51         u32 priority;
  52         enum rocker_of_dpa_table_id tbl_id;
  53         union {
  54                 struct {
  55                         u32 in_pport;
  56                         u32 in_pport_mask;
  57                         enum rocker_of_dpa_table_id goto_tbl;
  58                 } ig_port;
  59                 struct {
  60                         u32 in_pport;
  61                         __be16 vlan_id;
  62                         __be16 vlan_id_mask;
  63                         enum rocker_of_dpa_table_id goto_tbl;
  64                         bool untagged;
  65                         __be16 new_vlan_id;
  66                 } vlan;
  67                 struct {
  68                         u32 in_pport;
  69                         u32 in_pport_mask;
  70                         __be16 eth_type;
  71                         u8 eth_dst[ETH_ALEN];
  72                         u8 eth_dst_mask[ETH_ALEN];
  73                         __be16 vlan_id;
  74                         __be16 vlan_id_mask;
  75                         enum rocker_of_dpa_table_id goto_tbl;
  76                         bool copy_to_cpu;
  77                 } term_mac;
  78                 struct {
  79                         __be16 eth_type;
  80                         __be32 dst4;
  81                         __be32 dst4_mask;
  82                         enum rocker_of_dpa_table_id goto_tbl;
  83                         u32 group_id;
  84                 } ucast_routing;
  85                 struct {
  86                         u8 eth_dst[ETH_ALEN];
  87                         u8 eth_dst_mask[ETH_ALEN];
  88                         int has_eth_dst;
  89                         int has_eth_dst_mask;
  90                         __be16 vlan_id;
  91                         u32 tunnel_id;
  92                         enum rocker_of_dpa_table_id goto_tbl;
  93                         u32 group_id;
  94                         bool copy_to_cpu;
  95                 } bridge;
  96                 struct {
  97                         u32 in_pport;
  98                         u32 in_pport_mask;
  99                         u8 eth_src[ETH_ALEN];
 100                         u8 eth_src_mask[ETH_ALEN];
 101                         u8 eth_dst[ETH_ALEN];
 102                         u8 eth_dst_mask[ETH_ALEN];
 103                         __be16 eth_type;
 104                         __be16 vlan_id;
 105                         __be16 vlan_id_mask;
 106                         u8 ip_proto;
 107                         u8 ip_proto_mask;
 108                         u8 ip_tos;
 109                         u8 ip_tos_mask;
 110                         u32 group_id;
 111                 } acl;
 112         };
 113 };
 114
 115 struct rocker_flow_tbl_entry {
 116         struct hlist_node entry;
 117         u32 cmd;
 118         u64 cookie;
 119         struct rocker_flow_tbl_key key;
 120         size_t key_len;
 121         u32 key_crc32; /* key */
 122 };
 123
 124 struct rocker_group_tbl_entry {
 125         struct hlist_node entry;
 126         u32 cmd;
 127         u32 group_id; /* key */
 128         u16 group_count;
 129         u32 *group_ids;
 130         union {
 131                 struct {
 132                         u8 pop_vlan;
 133                 } l2_interface;
 134                 struct {
 135                         u8 eth_src[ETH_ALEN];
 136                         u8 eth_dst[ETH_ALEN];
 137                         __be16 vlan_id;
 138                         u32 group_id;
 139                 } l2_rewrite;
 140                 struct {
 141                         u8 eth_src[ETH_ALEN];
 142                         u8 eth_dst[ETH_ALEN];
 143                         __be16 vlan_id;
 144                         bool ttl_check;
 145                         u32 group_id;
 146                 } l3_unicast;
 147         };
 148 };
 149
 150 struct rocker_fdb_tbl_entry {
 151         struct hlist_node entry;
 152         u32 key_crc32; /* key */
 153         bool learned;
 154         struct rocker_fdb_tbl_key {
 155                 u32 pport;
 156                 u8 addr[ETH_ALEN];
 157                 __be16 vlan_id;
 158         } key;
 159 };
 160
 161 struct rocker_internal_vlan_tbl_entry {
 162         struct hlist_node entry;
 163         int ifindex; /* key */
 164         u32 ref_count;
 165         __be16 vlan_id;
 166 };
 167
 168 struct rocker_neigh_tbl_entry {
 169         struct hlist_node entry;
 170         __be32 ip_addr; /* key */
 171         struct net_device *dev;
 172         u32 ref_count;
 173         u32 index;
 174         u8 eth_dst[ETH_ALEN];
 175         bool ttl_check;
 176 };
 177
 178 struct rocker_desc_info {
 179         char *data; /* mapped */
 180         size_t data_size;
 181         size_t tlv_size;
 182         struct rocker_desc *desc;
 183         DEFINE_DMA_UNMAP_ADDR(mapaddr);
 184 };
 185
 186 struct rocker_dma_ring_info {
 187         size_t size;
 188         u32 head;
 189         u32 tail;
 190         struct rocker_desc *desc; /* mapped */
 191         dma_addr_t mapaddr;
 192         struct rocker_desc_info *desc_info;
 193         unsigned int type;
 194 };
 195
 196 struct rocker;
 197
 198 enum {
 199         ROCKER_CTRL_LINK_LOCAL_MCAST,
 200         ROCKER_CTRL_LOCAL_ARP,
 201         ROCKER_CTRL_IPV4_MCAST,
 202         ROCKER_CTRL_IPV6_MCAST,
 203         ROCKER_CTRL_DFLT_BRIDGING,
 204         ROCKER_CTRL_MAX,
 205 };
 206
 207 #define ROCKER_INTERNAL_VLAN_ID_BASE    0x0f00
 208 #define ROCKER_N_INTERNAL_VLANS         255
 209 #define ROCKER_VLAN_BITMAP_LEN          BITS_TO_LONGS(VLAN_N_VID)
 210 #define ROCKER_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(ROCKER_N_INTERNAL_VLANS)
 211
 212 struct rocker_port {
 213         struct net_device *dev;
 214         struct net_device *bridge_dev;
 215         struct rocker *rocker;
 216         unsigned int port_number;
 217         u32 pport;
 218         __be16 internal_vlan_id;
 219         int stp_state;
 220         u32 brport_flags;
 221         bool ctrls[ROCKER_CTRL_MAX];
 222         unsigned long vlan_bitmap[ROCKER_VLAN_BITMAP_LEN];
 223         struct napi_struct napi_tx;
 224         struct napi_struct napi_rx;
 225         struct rocker_dma_ring_info tx_ring;
 226         struct rocker_dma_ring_info rx_ring;
 227 };
 228
 229 struct rocker {
 230         struct pci_dev *pdev;
 231         u8 __iomem *hw_addr;
 232         struct msix_entry *msix_entries;
 233         unsigned int port_count;
 234         struct rocker_port **ports;
 235         struct {
 236                 u64 id;
 237         } hw;
 238         spinlock_t cmd_ring_lock;
 239         struct rocker_dma_ring_info cmd_ring;
 240         struct rocker_dma_ring_info event_ring;
 241         DECLARE_HASHTABLE(flow_tbl, 16);
 242         spinlock_t flow_tbl_lock;
 243         u64 flow_tbl_next_cookie;
 244         DECLARE_HASHTABLE(group_tbl, 16);
 245         spinlock_t group_tbl_lock;
 246         DECLARE_HASHTABLE(fdb_tbl, 16);
 247         spinlock_t fdb_tbl_lock;
 248         unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN];
 249         DECLARE_HASHTABLE(internal_vlan_tbl, 8);
 250         spinlock_t internal_vlan_tbl_lock;
 251         DECLARE_HASHTABLE(neigh_tbl, 16);
 252         spinlock_t neigh_tbl_lock;
 253         u32 neigh_tbl_next_index;
 254 };
 255
 256 static const u8 zero_mac[ETH_ALEN]   = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
 257 static const u8 ff_mac[ETH_ALEN]     = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 258 static const u8 ll_mac[ETH_ALEN]     = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
 259 static const u8 ll_mask[ETH_ALEN]    = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
 260 static const u8 mcast_mac[ETH_ALEN]  = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
 261 static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
 262 static const u8 ipv4_mask[ETH_ALEN]  = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
 263 static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
 264 static const u8 ipv6_mask[ETH_ALEN]  = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
 265
 266 /* Rocker priority levels for flow table entries.  Higher
 267  * priority match takes precedence over lower priority match.
 268  */
 269
 270 enum {
 271         ROCKER_PRIORITY_UNKNOWN = 0,
 272         ROCKER_PRIORITY_IG_PORT = 1,
 273         ROCKER_PRIORITY_VLAN = 1,
 274         ROCKER_PRIORITY_TERM_MAC_UCAST = 0,
 275         ROCKER_PRIORITY_TERM_MAC_MCAST = 1,
 276         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
 277         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
 278         ROCKER_PRIORITY_BRIDGING_VLAN = 3,
 279         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
 280         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
 281         ROCKER_PRIORITY_BRIDGING_TENANT = 3,
 282         ROCKER_PRIORITY_ACL_CTRL = 3,
 283         ROCKER_PRIORITY_ACL_NORMAL = 2,
 284         ROCKER_PRIORITY_ACL_DFLT = 1,
 285 };
 286
 287 static bool rocker_vlan_id_is_internal(__be16 vlan_id)
 288 {
 289         u16 start = ROCKER_INTERNAL_VLAN_ID_BASE;
 290         u16 end = 0xffe;
 291         u16 _vlan_id = ntohs(vlan_id);
 292
 293         return (_vlan_id >= start && _vlan_id <= end);
 294 }
 295
 296 static __be16 rocker_port_vid_to_vlan(struct rocker_port *rocker_port,
 297                                       u16 vid, bool *pop_vlan)
 298 {
 299         __be16 vlan_id;
 300
 301         if (pop_vlan)
 302                 *pop_vlan = false;
 303         vlan_id = htons(vid);
 304         if (!vlan_id) {
 305                 vlan_id = rocker_port->internal_vlan_id;
 306                 if (pop_vlan)
 307                         *pop_vlan = true;
 308         }
 309
 310         return vlan_id;
 311 }
 312
 313 static u16 rocker_port_vlan_to_vid(struct rocker_port *rocker_port,
 314                                    __be16 vlan_id)
 315 {
 316         if (rocker_vlan_id_is_internal(vlan_id))
 317                 return 0;
 318
 319         return ntohs(vlan_id);
 320 }
 321
 322 static bool rocker_port_is_bridged(struct rocker_port *rocker_port)
 323 {
 324         return !!rocker_port->bridge_dev;
 325 }
 326
 327 struct rocker_wait {
 328         wait_queue_head_t wait;
 329         bool done;
 330         bool nowait;
 331 };
 332
 333 static void rocker_wait_reset(struct rocker_wait *wait)
 334 {
 335         wait->done = false;
 336         wait->nowait = false;
 337 }
 338
 339 static void rocker_wait_init(struct rocker_wait *wait)
 340 {
 341         init_waitqueue_head(&wait->wait);
 342         rocker_wait_reset(wait);
 343 }
 344
 345 static struct rocker_wait *rocker_wait_create(gfp_t gfp)
 346 {
 347         struct rocker_wait *wait;
 348
 349         wait = kmalloc(sizeof(*wait), gfp);
 350         if (!wait)
 351                 return NULL;
 352         rocker_wait_init(wait);
 353         return wait;
 354 }
 355
 356 static void rocker_wait_destroy(struct rocker_wait *work)
 357 {
 358         kfree(work);
 359 }
 360
 361 static bool rocker_wait_event_timeout(struct rocker_wait *wait,
 362                                       unsigned long timeout)
 363 {
 364         wait_event_timeout(wait->wait, wait->done, HZ / 10);
 365         if (!wait->done)
 366                 return false;
 367         return true;
 368 }
 369
 370 static void rocker_wait_wake_up(struct rocker_wait *wait)
 371 {
 372         wait->done = true;
 373         wake_up(&wait->wait);
 374 }
 375
 376 static u32 rocker_msix_vector(struct rocker *rocker, unsigned int vector)
 377 {
 378         return rocker->msix_entries[vector].vector;
 379 }
 380
 381 static u32 rocker_msix_tx_vector(struct rocker_port *rocker_port)
 382 {
 383         return rocker_msix_vector(rocker_port->rocker,
 384                                   ROCKER_MSIX_VEC_TX(rocker_port->port_number));
 385 }
 386
 387 static u32 rocker_msix_rx_vector(struct rocker_port *rocker_port)
 388 {
 389         return rocker_msix_vector(rocker_port->rocker,
 390                                   ROCKER_MSIX_VEC_RX(rocker_port->port_number));
 391 }
 392
 393 #define rocker_write32(rocker, reg, val)        \
 394         writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 395 #define rocker_read32(rocker, reg)      \
 396         readl((rocker)->hw_addr + (ROCKER_ ## reg))
 397 #define rocker_write64(rocker, reg, val)        \
 398         writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 399 #define rocker_read64(rocker, reg)      \
 400         readq((rocker)->hw_addr + (ROCKER_ ## reg))
 401
 402 /*****************************
 403  * HW basic testing functions
 404  *****************************/
 405
 406 static int rocker_reg_test(struct rocker *rocker)
 407 {
 408         struct pci_dev *pdev = rocker->pdev;
 409         u64 test_reg;
 410         u64 rnd;
 411
 412         rnd = prandom_u32();
 413         rnd >>= 1;
 414         rocker_write32(rocker, TEST_REG, rnd);
 415         test_reg = rocker_read32(rocker, TEST_REG);
 416         if (test_reg != rnd * 2) {
 417                 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
 418                         test_reg, rnd * 2);
 419                 return -EIO;
 420         }
 421
 422         rnd = prandom_u32();
 423         rnd <<= 31;
 424         rnd |= prandom_u32();
 425         rocker_write64(rocker, TEST_REG64, rnd);
 426         test_reg = rocker_read64(rocker, TEST_REG64);
 427         if (test_reg != rnd * 2) {
 428                 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
 429                         test_reg, rnd * 2);
 430                 return -EIO;
 431         }
 432
 433         return 0;
 434 }
 435
 436 static int rocker_dma_test_one(struct rocker *rocker, struct rocker_wait *wait,
 437                                u32 test_type, dma_addr_t dma_handle,
 438                                unsigned char *buf, unsigned char *expect,
 439                                size_t size)
 440 {
 441         struct pci_dev *pdev = rocker->pdev;
 442         int i;
 443
 444         rocker_wait_reset(wait);
 445         rocker_write32(rocker, TEST_DMA_CTRL, test_type);
 446
 447         if (!rocker_wait_event_timeout(wait, HZ / 10)) {
 448                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 449                 return -EIO;
 450         }
 451
 452         for (i = 0; i < size; i++) {
 453                 if (buf[i] != expect[i]) {
 454                         dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
 455                                 buf[i], i, expect[i]);
 456                         return -EIO;
 457                 }
 458         }
 459         return 0;
 460 }
 461
 462 #define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
 463 #define ROCKER_TEST_DMA_FILL_PATTERN 0x96
 464
 465 static int rocker_dma_test_offset(struct rocker *rocker,
 466                                   struct rocker_wait *wait, int offset)
 467 {
 468         struct pci_dev *pdev = rocker->pdev;
 469         unsigned char *alloc;
 470         unsigned char *buf;
 471         unsigned char *expect;
 472         dma_addr_t dma_handle;
 473         int i;
 474         int err;
 475
 476         alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
 477                         GFP_KERNEL | GFP_DMA);
 478         if (!alloc)
 479                 return -ENOMEM;
 480         buf = alloc + offset;
 481         expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
 482
 483         dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
 484                                     PCI_DMA_BIDIRECTIONAL);
 485         if (pci_dma_mapping_error(pdev, dma_handle)) {
 486                 err = -EIO;
 487                 goto free_alloc;
 488         }
 489
 490         rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
 491         rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
 492
 493         memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
 494         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
 495                                   dma_handle, buf, expect,
 496                                   ROCKER_TEST_DMA_BUF_SIZE);
 497         if (err)
 498                 goto unmap;
 499
 500         memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
 501         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
 502                                   dma_handle, buf, expect,
 503                                   ROCKER_TEST_DMA_BUF_SIZE);
 504         if (err)
 505                 goto unmap;
 506
 507         prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
 508         for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
 509                 expect[i] = ~buf[i];
 510         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
 511                                   dma_handle, buf, expect,
 512                                   ROCKER_TEST_DMA_BUF_SIZE);
 513         if (err)
 514                 goto unmap;
 515
 516 unmap:
 517         pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
 518                          PCI_DMA_BIDIRECTIONAL);
 519 free_alloc:
 520         kfree(alloc);
 521
 522         return err;
 523 }
 524
 525 static int rocker_dma_test(struct rocker *rocker, struct rocker_wait *wait)
 526 {
 527         int i;
 528         int err;
 529
 530         for (i = 0; i < 8; i++) {
 531                 err = rocker_dma_test_offset(rocker, wait, i);
 532                 if (err)
 533                         return err;
 534         }
 535         return 0;
 536 }
 537
 538 static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
 539 {
 540         struct rocker_wait *wait = dev_id;
 541
 542         rocker_wait_wake_up(wait);
 543
 544         return IRQ_HANDLED;
 545 }
 546
 547 static int rocker_basic_hw_test(struct rocker *rocker)
 548 {
 549         struct pci_dev *pdev = rocker->pdev;
 550         struct rocker_wait wait;
 551         int err;
 552
 553         err = rocker_reg_test(rocker);
 554         if (err) {
 555                 dev_err(&pdev->dev, "reg test failed\n");
 556                 return err;
 557         }
 558
 559         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
 560                           rocker_test_irq_handler, 0,
 561                           rocker_driver_name, &wait);
 562         if (err) {
 563                 dev_err(&pdev->dev, "cannot assign test irq\n");
 564                 return err;
 565         }
 566
 567         rocker_wait_init(&wait);
 568         rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
 569
 570         if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
 571                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 572                 err = -EIO;
 573                 goto free_irq;
 574         }
 575
 576         err = rocker_dma_test(rocker, &wait);
 577         if (err)
 578                 dev_err(&pdev->dev, "dma test failed\n");
 579
 580 free_irq:
 581         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
 582         return err;
 583 }
 584
 585 /******
 586  * TLV
 587  ******/
 588
 589 #define ROCKER_TLV_ALIGNTO 8U
 590 #define ROCKER_TLV_ALIGN(len) \
 591         (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1))
 592 #define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv))
 593
 594 /*  <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) --->
 595  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
 596  * |             Header          | Pad |           Payload           | Pad |
 597  * |      (struct rocker_tlv)    | ing |                             | ing |
 598  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
 599  *  <--------------------------- tlv->len -------------------------->
 600  */
 601
 602 static struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv,
 603                                           int *remaining)
 604 {
 605         int totlen = ROCKER_TLV_ALIGN(tlv->len);
 606
 607         *remaining -= totlen;
 608         return (struct rocker_tlv *) ((char *) tlv + totlen);
 609 }
 610
 611 static int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining)
 612 {
 613         return remaining >= (int) ROCKER_TLV_HDRLEN &&
 614                tlv->len >= ROCKER_TLV_HDRLEN &&
 615                tlv->len <= remaining;
 616 }
 617
 618 #define rocker_tlv_for_each(pos, head, len, rem)        \
 619         for (pos = head, rem = len;                     \
 620              rocker_tlv_ok(pos, rem);                   \
 621              pos = rocker_tlv_next(pos, &(rem)))
 622
 623 #define rocker_tlv_for_each_nested(pos, tlv, rem)       \
 624         rocker_tlv_for_each(pos, rocker_tlv_data(tlv),  \
 625                             rocker_tlv_len(tlv), rem)
 626
 627 static int rocker_tlv_attr_size(int payload)
 628 {
 629         return ROCKER_TLV_HDRLEN + payload;
 630 }
 631
 632 static int rocker_tlv_total_size(int payload)
 633 {
 634         return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload));
 635 }
 636
 637 static int rocker_tlv_padlen(int payload)
 638 {
 639         return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload);
 640 }
 641
 642 static int rocker_tlv_type(const struct rocker_tlv *tlv)
 643 {
 644         return tlv->type;
 645 }
 646
 647 static void *rocker_tlv_data(const struct rocker_tlv *tlv)
 648 {
 649         return (char *) tlv + ROCKER_TLV_HDRLEN;
 650 }
 651
 652 static int rocker_tlv_len(const struct rocker_tlv *tlv)
 653 {
 654         return tlv->len - ROCKER_TLV_HDRLEN;
 655 }
 656
 657 static u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv)
 658 {
 659         return *(u8 *) rocker_tlv_data(tlv);
 660 }
 661
 662 static u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv)
 663 {
 664         return *(u16 *) rocker_tlv_data(tlv);
 665 }
 666
 667 static __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv)
 668 {
 669         return *(__be16 *) rocker_tlv_data(tlv);
 670 }
 671
 672 static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv)
 673 {
 674         return *(u32 *) rocker_tlv_data(tlv);
 675 }
 676
 677 static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv)
 678 {
 679         return *(u64 *) rocker_tlv_data(tlv);
 680 }
 681
 682 static void rocker_tlv_parse(struct rocker_tlv **tb, int maxtype,
 683                              const char *buf, int buf_len)
 684 {
 685         const struct rocker_tlv *tlv;
 686         const struct rocker_tlv *head = (const struct rocker_tlv *) buf;
 687         int rem;
 688
 689         memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1));
 690
 691         rocker_tlv_for_each(tlv, head, buf_len, rem) {
 692                 u32 type = rocker_tlv_type(tlv);
 693
 694                 if (type > 0 && type <= maxtype)
 695                         tb[type] = (struct rocker_tlv *) tlv;
 696         }
 697 }
 698
 699 static void rocker_tlv_parse_nested(struct rocker_tlv **tb, int maxtype,
 700                                     const struct rocker_tlv *tlv)
 701 {
 702         rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv),
 703                          rocker_tlv_len(tlv));
 704 }
 705
 706 static void rocker_tlv_parse_desc(struct rocker_tlv **tb, int maxtype,
 707                                   struct rocker_desc_info *desc_info)
 708 {
 709         rocker_tlv_parse(tb, maxtype, desc_info->data,
 710                          desc_info->desc->tlv_size);
 711 }
 712
 713 static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info)
 714 {
 715         return (struct rocker_tlv *) ((char *) desc_info->data +
 716                                                desc_info->tlv_size);
 717 }
 718
 719 static int rocker_tlv_put(struct rocker_desc_info *desc_info,
 720                           int attrtype, int attrlen, const void *data)
 721 {
 722         int tail_room = desc_info->data_size - desc_info->tlv_size;
 723         int total_size = rocker_tlv_total_size(attrlen);
 724         struct rocker_tlv *tlv;
 725
 726         if (unlikely(tail_room < total_size))
 727                 return -EMSGSIZE;
 728
 729         tlv = rocker_tlv_start(desc_info);
 730         desc_info->tlv_size += total_size;
 731         tlv->type = attrtype;
 732         tlv->len = rocker_tlv_attr_size(attrlen);
 733         memcpy(rocker_tlv_data(tlv), data, attrlen);
 734         memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen));
 735         return 0;
 736 }
 737
 738 static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info,
 739                              int attrtype, u8 value)
 740 {
 741         return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value);
 742 }
 743
 744 static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info,
 745                               int attrtype, u16 value)
 746 {
 747         return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value);
 748 }
 749
 750 static int rocker_tlv_put_be16(struct rocker_desc_info *desc_info,
 751                                int attrtype, __be16 value)
 752 {
 753         return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &value);
 754 }
 755
 756 static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info,
 757                               int attrtype, u32 value)
 758 {
 759         return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value);
 760 }
 761
 762 static int rocker_tlv_put_be32(struct rocker_desc_info *desc_info,
 763                                int attrtype, __be32 value)
 764 {
 765         return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &value);
 766 }
 767
 768 static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info,
 769                               int attrtype, u64 value)
 770 {
 771         return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value);
 772 }
 773
 774 static struct rocker_tlv *
 775 rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype)
 776 {
 777         struct rocker_tlv *start = rocker_tlv_start(desc_info);
 778
 779         if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0)
 780                 return NULL;
 781
 782         return start;
 783 }
 784
 785 static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info,
 786                                 struct rocker_tlv *start)
 787 {
 788         start->len = (char *) rocker_tlv_start(desc_info) - (char *) start;
 789 }
 790
 791 static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info,
 792                                    struct rocker_tlv *start)
 793 {
 794         desc_info->tlv_size = (char *) start - desc_info->data;
 795 }
 796
 797 /******************************************
 798  * DMA rings and descriptors manipulations
 799  ******************************************/
 800
 801 static u32 __pos_inc(u32 pos, size_t limit)
 802 {
 803         return ++pos == limit ? 0 : pos;
 804 }
 805
 806 static int rocker_desc_err(struct rocker_desc_info *desc_info)
 807 {
 808         int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN;
 809
 810         switch (err) {
 811         case ROCKER_OK:
 812                 return 0;
 813         case -ROCKER_ENOENT:
 814                 return -ENOENT;
 815         case -ROCKER_ENXIO:
 816                 return -ENXIO;
 817         case -ROCKER_ENOMEM:
 818                 return -ENOMEM;
 819         case -ROCKER_EEXIST:
 820                 return -EEXIST;
 821         case -ROCKER_EINVAL:
 822                 return -EINVAL;
 823         case -ROCKER_EMSGSIZE:
 824                 return -EMSGSIZE;
 825         case -ROCKER_ENOTSUP:
 826                 return -EOPNOTSUPP;
 827         case -ROCKER_ENOBUFS:
 828                 return -ENOBUFS;
 829         }
 830
 831         return -EINVAL;
 832 }
 833
 834 static void rocker_desc_gen_clear(struct rocker_desc_info *desc_info)
 835 {
 836         desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
 837 }
 838
 839 static bool rocker_desc_gen(struct rocker_desc_info *desc_info)
 840 {
 841         u32 comp_err = desc_info->desc->comp_err;
 842
 843         return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
 844 }
 845
 846 static void *rocker_desc_cookie_ptr_get(struct rocker_desc_info *desc_info)
 847 {
 848         return (void *)(uintptr_t)desc_info->desc->cookie;
 849 }
 850
 851 static void rocker_desc_cookie_ptr_set(struct rocker_desc_info *desc_info,
 852                                        void *ptr)
 853 {
 854         desc_info->desc->cookie = (uintptr_t) ptr;
 855 }
 856
 857 static struct rocker_desc_info *
 858 rocker_desc_head_get(struct rocker_dma_ring_info *info)
 859 {
 860         static struct rocker_desc_info *desc_info;
 861         u32 head = __pos_inc(info->head, info->size);
 862
 863         desc_info = &info->desc_info[info->head];
 864         if (head == info->tail)
 865                 return NULL; /* ring full */
 866         desc_info->tlv_size = 0;
 867         return desc_info;
 868 }
 869
 870 static void rocker_desc_commit(struct rocker_desc_info *desc_info)
 871 {
 872         desc_info->desc->buf_size = desc_info->data_size;
 873         desc_info->desc->tlv_size = desc_info->tlv_size;
 874 }
 875
 876 static void rocker_desc_head_set(struct rocker *rocker,
 877                                  struct rocker_dma_ring_info *info,
 878                                  struct rocker_desc_info *desc_info)
 879 {
 880         u32 head = __pos_inc(info->head, info->size);
 881
 882         BUG_ON(head == info->tail);
 883         rocker_desc_commit(desc_info);
 884         info->head = head;
 885         rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
 886 }
 887
 888 static struct rocker_desc_info *
 889 rocker_desc_tail_get(struct rocker_dma_ring_info *info)
 890 {
 891         static struct rocker_desc_info *desc_info;
 892
 893         if (info->tail == info->head)
 894                 return NULL; /* nothing to be done between head and tail */
 895         desc_info = &info->desc_info[info->tail];
 896         if (!rocker_desc_gen(desc_info))
 897                 return NULL; /* gen bit not set, desc is not ready yet */
 898         info->tail = __pos_inc(info->tail, info->size);
 899         desc_info->tlv_size = desc_info->desc->tlv_size;
 900         return desc_info;
 901 }
 902
 903 static void rocker_dma_ring_credits_set(struct rocker *rocker,
 904                                         struct rocker_dma_ring_info *info,
 905                                         u32 credits)
 906 {
 907         if (credits)
 908                 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
 909 }
 910
 911 static unsigned long rocker_dma_ring_size_fix(size_t size)
 912 {
 913         return max(ROCKER_DMA_SIZE_MIN,
 914                    min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
 915 }
 916
 917 static int rocker_dma_ring_create(struct rocker *rocker,
 918                                   unsigned int type,
 919                                   size_t size,
 920                                   struct rocker_dma_ring_info *info)
 921 {
 922         int i;
 923
 924         BUG_ON(size != rocker_dma_ring_size_fix(size));
 925         info->size = size;
 926         info->type = type;
 927         info->head = 0;
 928         info->tail = 0;
 929         info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
 930                                   GFP_KERNEL);
 931         if (!info->desc_info)
 932                 return -ENOMEM;
 933
 934         info->desc = pci_alloc_consistent(rocker->pdev,
 935                                           info->size * sizeof(*info->desc),
 936                                           &info->mapaddr);
 937         if (!info->desc) {
 938                 kfree(info->desc_info);
 939                 return -ENOMEM;
 940         }
 941
 942         for (i = 0; i < info->size; i++)
 943                 info->desc_info[i].desc = &info->desc[i];
 944
 945         rocker_write32(rocker, DMA_DESC_CTRL(info->type),
 946                        ROCKER_DMA_DESC_CTRL_RESET);
 947         rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
 948         rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
 949
 950         return 0;
 951 }
 952
 953 static void rocker_dma_ring_destroy(struct rocker *rocker,
 954                                     struct rocker_dma_ring_info *info)
 955 {
 956         rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
 957
 958         pci_free_consistent(rocker->pdev,
 959                             info->size * sizeof(struct rocker_desc),
 960                             info->desc, info->mapaddr);
 961         kfree(info->desc_info);
 962 }
 963
 964 static void rocker_dma_ring_pass_to_producer(struct rocker *rocker,
 965                                              struct rocker_dma_ring_info *info)
 966 {
 967         int i;
 968
 969         BUG_ON(info->head || info->tail);
 970
 971         /* When ring is consumer, we need to advance head for each desc.
 972          * That tells hw that the desc is ready to be used by it.
 973          */
 974         for (i = 0; i < info->size - 1; i++)
 975                 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
 976         rocker_desc_commit(&info->desc_info[i]);
 977 }
 978
 979 static int rocker_dma_ring_bufs_alloc(struct rocker *rocker,
 980                                       struct rocker_dma_ring_info *info,
 981                                       int direction, size_t buf_size)
 982 {
 983         struct pci_dev *pdev = rocker->pdev;
 984         int i;
 985         int err;
 986
 987         for (i = 0; i < info->size; i++) {
 988                 struct rocker_desc_info *desc_info = &info->desc_info[i];
 989                 struct rocker_desc *desc = &info->desc[i];
 990                 dma_addr_t dma_handle;
 991                 char *buf;
 992
 993                 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
 994                 if (!buf) {
 995                         err = -ENOMEM;
 996                         goto rollback;
 997                 }
 998
 999                 dma_handle = pci_map_single(pdev, buf, buf_size, direction);
1000                 if (pci_dma_mapping_error(pdev, dma_handle)) {
1001                         kfree(buf);
1002                         err = -EIO;
1003                         goto rollback;
1004                 }
1005
1006                 desc_info->data = buf;
1007                 desc_info->data_size = buf_size;
1008                 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
1009
1010                 desc->buf_addr = dma_handle;
1011                 desc->buf_size = buf_size;
1012         }
1013         return 0;
1014
1015 rollback:
1016         for (i--; i >= 0; i--) {
1017                 struct rocker_desc_info *desc_info = &info->desc_info[i];
1018
1019                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1020                                  desc_info->data_size, direction);
1021                 kfree(desc_info->data);
1022         }
1023         return err;
1024 }
1025
1026 static void rocker_dma_ring_bufs_free(struct rocker *rocker,
1027                                       struct rocker_dma_ring_info *info,
1028                                       int direction)
1029 {
1030         struct pci_dev *pdev = rocker->pdev;
1031         int i;
1032
1033         for (i = 0; i < info->size; i++) {
1034                 struct rocker_desc_info *desc_info = &info->desc_info[i];
1035                 struct rocker_desc *desc = &info->desc[i];
1036
1037                 desc->buf_addr = 0;
1038                 desc->buf_size = 0;
1039                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1040                                  desc_info->data_size, direction);
1041                 kfree(desc_info->data);
1042         }
1043 }
1044
1045 static int rocker_dma_rings_init(struct rocker *rocker)
1046 {
1047         struct pci_dev *pdev = rocker->pdev;
1048         int err;
1049
1050         err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
1051                                      ROCKER_DMA_CMD_DEFAULT_SIZE,
1052                                      &rocker->cmd_ring);
1053         if (err) {
1054                 dev_err(&pdev->dev, "failed to create command dma ring\n");
1055                 return err;
1056         }
1057
1058         spin_lock_init(&rocker->cmd_ring_lock);
1059
1060         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
1061                                          PCI_DMA_BIDIRECTIONAL, PAGE_SIZE);
1062         if (err) {
1063                 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
1064                 goto err_dma_cmd_ring_bufs_alloc;
1065         }
1066
1067         err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
1068                                      ROCKER_DMA_EVENT_DEFAULT_SIZE,
1069                                      &rocker->event_ring);
1070         if (err) {
1071                 dev_err(&pdev->dev, "failed to create event dma ring\n");
1072                 goto err_dma_event_ring_create;
1073         }
1074
1075         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
1076                                          PCI_DMA_FROMDEVICE, PAGE_SIZE);
1077         if (err) {
1078                 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
1079                 goto err_dma_event_ring_bufs_alloc;
1080         }
1081         rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
1082         return 0;
1083
1084 err_dma_event_ring_bufs_alloc:
1085         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1086 err_dma_event_ring_create:
1087         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1088                                   PCI_DMA_BIDIRECTIONAL);
1089 err_dma_cmd_ring_bufs_alloc:
1090         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1091         return err;
1092 }
1093
1094 static void rocker_dma_rings_fini(struct rocker *rocker)
1095 {
1096         rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
1097                                   PCI_DMA_BIDIRECTIONAL);
1098         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1099         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1100                                   PCI_DMA_BIDIRECTIONAL);
1101         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1102 }
1103
1104 static int rocker_dma_rx_ring_skb_map(struct rocker *rocker,
1105                                       struct rocker_port *rocker_port,
1106                                       struct rocker_desc_info *desc_info,
1107                                       struct sk_buff *skb, size_t buf_len)
1108 {
1109         struct pci_dev *pdev = rocker->pdev;
1110         dma_addr_t dma_handle;
1111
1112         dma_handle = pci_map_single(pdev, skb->data, buf_len,
1113                                     PCI_DMA_FROMDEVICE);
1114         if (pci_dma_mapping_error(pdev, dma_handle))
1115                 return -EIO;
1116         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
1117                 goto tlv_put_failure;
1118         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
1119                 goto tlv_put_failure;
1120         return 0;
1121
1122 tlv_put_failure:
1123         pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
1124         desc_info->tlv_size = 0;
1125         return -EMSGSIZE;
1126 }
1127
1128 static size_t rocker_port_rx_buf_len(struct rocker_port *rocker_port)
1129 {
1130         return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1131 }
1132
1133 static int rocker_dma_rx_ring_skb_alloc(struct rocker *rocker,
1134                                         struct rocker_port *rocker_port,
1135                                         struct rocker_desc_info *desc_info)
1136 {
1137         struct net_device *dev = rocker_port->dev;
1138         struct sk_buff *skb;
1139         size_t buf_len = rocker_port_rx_buf_len(rocker_port);
1140         int err;
1141
1142         /* Ensure that hw will see tlv_size zero in case of an error.
1143          * That tells hw to use another descriptor.
1144          */
1145         rocker_desc_cookie_ptr_set(desc_info, NULL);
1146         desc_info->tlv_size = 0;
1147
1148         skb = netdev_alloc_skb_ip_align(dev, buf_len);
1149         if (!skb)
1150                 return -ENOMEM;
1151         err = rocker_dma_rx_ring_skb_map(rocker, rocker_port, desc_info,
1152                                          skb, buf_len);
1153         if (err) {
1154                 dev_kfree_skb_any(skb);
1155                 return err;
1156         }
1157         rocker_desc_cookie_ptr_set(desc_info, skb);
1158         return 0;
1159 }
1160
1161 static void rocker_dma_rx_ring_skb_unmap(struct rocker *rocker,
1162                                          struct rocker_tlv **attrs)
1163 {
1164         struct pci_dev *pdev = rocker->pdev;
1165         dma_addr_t dma_handle;
1166         size_t len;
1167
1168         if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
1169             !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
1170                 return;
1171         dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
1172         len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
1173         pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
1174 }
1175
1176 static void rocker_dma_rx_ring_skb_free(struct rocker *rocker,
1177                                         struct rocker_desc_info *desc_info)
1178 {
1179         struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
1180         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
1181
1182         if (!skb)
1183                 return;
1184         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
1185         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
1186         dev_kfree_skb_any(skb);
1187 }
1188
1189 static int rocker_dma_rx_ring_skbs_alloc(struct rocker *rocker,
1190                                          struct rocker_port *rocker_port)
1191 {
1192         struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1193         int i;
1194         int err;
1195
1196         for (i = 0; i < rx_ring->size; i++) {
1197                 err = rocker_dma_rx_ring_skb_alloc(rocker, rocker_port,
1198                                                    &rx_ring->desc_info[i]);
1199                 if (err)
1200                         goto rollback;
1201         }
1202         return 0;
1203
1204 rollback:
1205         for (i--; i >= 0; i--)
1206                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1207         return err;
1208 }
1209
1210 static void rocker_dma_rx_ring_skbs_free(struct rocker *rocker,
1211                                          struct rocker_port *rocker_port)
1212 {
1213         struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1214         int i;
1215
1216         for (i = 0; i < rx_ring->size; i++)
1217                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1218 }
1219
1220 static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
1221 {
1222         struct rocker *rocker = rocker_port->rocker;
1223         int err;
1224
1225         err = rocker_dma_ring_create(rocker,
1226                                      ROCKER_DMA_TX(rocker_port->port_number),
1227                                      ROCKER_DMA_TX_DEFAULT_SIZE,
1228                                      &rocker_port->tx_ring);
1229         if (err) {
1230                 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
1231                 return err;
1232         }
1233
1234         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
1235                                          PCI_DMA_TODEVICE,
1236                                          ROCKER_DMA_TX_DESC_SIZE);
1237         if (err) {
1238                 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
1239                 goto err_dma_tx_ring_bufs_alloc;
1240         }
1241
1242         err = rocker_dma_ring_create(rocker,
1243                                      ROCKER_DMA_RX(rocker_port->port_number),
1244                                      ROCKER_DMA_RX_DEFAULT_SIZE,
1245                                      &rocker_port->rx_ring);
1246         if (err) {
1247                 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
1248                 goto err_dma_rx_ring_create;
1249         }
1250
1251         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
1252                                          PCI_DMA_BIDIRECTIONAL,
1253                                          ROCKER_DMA_RX_DESC_SIZE);
1254         if (err) {
1255                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
1256                 goto err_dma_rx_ring_bufs_alloc;
1257         }
1258
1259         err = rocker_dma_rx_ring_skbs_alloc(rocker, rocker_port);
1260         if (err) {
1261                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
1262                 goto err_dma_rx_ring_skbs_alloc;
1263         }
1264         rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
1265
1266         return 0;
1267
1268 err_dma_rx_ring_skbs_alloc:
1269         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1270                                   PCI_DMA_BIDIRECTIONAL);
1271 err_dma_rx_ring_bufs_alloc:
1272         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1273 err_dma_rx_ring_create:
1274         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1275                                   PCI_DMA_TODEVICE);
1276 err_dma_tx_ring_bufs_alloc:
1277         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1278         return err;
1279 }
1280
1281 static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
1282 {
1283         struct rocker *rocker = rocker_port->rocker;
1284
1285         rocker_dma_rx_ring_skbs_free(rocker, rocker_port);
1286         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1287                                   PCI_DMA_BIDIRECTIONAL);
1288         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1289         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1290                                   PCI_DMA_TODEVICE);
1291         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1292 }
1293
1294 static void rocker_port_set_enable(struct rocker_port *rocker_port, bool enable)
1295 {
1296         u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
1297
1298         if (enable)
1299                 val |= 1ULL << rocker_port->pport;
1300         else
1301                 val &= ~(1ULL << rocker_port->pport);
1302         rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
1303 }
1304
1305 /********************************
1306  * Interrupt handler and helpers
1307  ********************************/
1308
1309 static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
1310 {
1311         struct rocker *rocker = dev_id;
1312         struct rocker_desc_info *desc_info;
1313         struct rocker_wait *wait;
1314         u32 credits = 0;
1315
1316         spin_lock(&rocker->cmd_ring_lock);
1317         while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
1318                 wait = rocker_desc_cookie_ptr_get(desc_info);
1319                 if (wait->nowait) {
1320                         rocker_desc_gen_clear(desc_info);
1321                         rocker_wait_destroy(wait);
1322                 } else {
1323                         rocker_wait_wake_up(wait);
1324                 }
1325                 credits++;
1326         }
1327         spin_unlock(&rocker->cmd_ring_lock);
1328         rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
1329
1330         return IRQ_HANDLED;
1331 }
1332
1333 static void rocker_port_link_up(struct rocker_port *rocker_port)
1334 {
1335         netif_carrier_on(rocker_port->dev);
1336         netdev_info(rocker_port->dev, "Link is up\n");
1337 }
1338
1339 static void rocker_port_link_down(struct rocker_port *rocker_port)
1340 {
1341         netif_carrier_off(rocker_port->dev);
1342         netdev_info(rocker_port->dev, "Link is down\n");
1343 }
1344
1345 static int rocker_event_link_change(struct rocker *rocker,
1346                                     const struct rocker_tlv *info)
1347 {
1348         struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
1349         unsigned int port_number;
1350         bool link_up;
1351         struct rocker_port *rocker_port;
1352
1353         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
1354         if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] ||
1355             !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
1356                 return -EIO;
1357         port_number =
1358                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1;
1359         link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
1360
1361         if (port_number >= rocker->port_count)
1362                 return -EINVAL;
1363
1364         rocker_port = rocker->ports[port_number];
1365         if (netif_carrier_ok(rocker_port->dev) != link_up) {
1366                 if (link_up)
1367                         rocker_port_link_up(rocker_port);
1368                 else
1369                         rocker_port_link_down(rocker_port);
1370         }
1371
1372         return 0;
1373 }
1374
1375 #define ROCKER_OP_FLAG_REMOVE           BIT(0)
1376 #define ROCKER_OP_FLAG_NOWAIT           BIT(1)
1377 #define ROCKER_OP_FLAG_LEARNED          BIT(2)
1378 #define ROCKER_OP_FLAG_REFRESH          BIT(3)
1379
1380 static int rocker_port_fdb(struct rocker_port *rocker_port,
1381                            const unsigned char *addr,
1382                            __be16 vlan_id, int flags);
1383
1384 static int rocker_event_mac_vlan_seen(struct rocker *rocker,
1385                                       const struct rocker_tlv *info)
1386 {
1387         struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
1388         unsigned int port_number;
1389         struct rocker_port *rocker_port;
1390         unsigned char *addr;
1391         int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_LEARNED;
1392         __be16 vlan_id;
1393
1394         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
1395         if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] ||
1396             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
1397             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
1398                 return -EIO;
1399         port_number =
1400                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1;
1401         addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
1402         vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
1403
1404         if (port_number >= rocker->port_count)
1405                 return -EINVAL;
1406
1407         rocker_port = rocker->ports[port_number];
1408
1409         if (rocker_port->stp_state != BR_STATE_LEARNING &&
1410             rocker_port->stp_state != BR_STATE_FORWARDING)
1411                 return 0;
1412
1413         return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
1414 }
1415
1416 static int rocker_event_process(struct rocker *rocker,
1417                                 struct rocker_desc_info *desc_info)
1418 {
1419         struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
1420         struct rocker_tlv *info;
1421         u16 type;
1422
1423         rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
1424         if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
1425             !attrs[ROCKER_TLV_EVENT_INFO])
1426                 return -EIO;
1427
1428         type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
1429         info = attrs[ROCKER_TLV_EVENT_INFO];
1430
1431         switch (type) {
1432         case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
1433                 return rocker_event_link_change(rocker, info);
1434         case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
1435                 return rocker_event_mac_vlan_seen(rocker, info);
1436         }
1437
1438         return -EOPNOTSUPP;
1439 }
1440
1441 static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
1442 {
1443         struct rocker *rocker = dev_id;
1444         struct pci_dev *pdev = rocker->pdev;
1445         struct rocker_desc_info *desc_info;
1446         u32 credits = 0;
1447         int err;
1448
1449         while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1450                 err = rocker_desc_err(desc_info);
1451                 if (err) {
1452                         dev_err(&pdev->dev, "event desc received with err %d\n",
1453                                 err);
1454                 } else {
1455                         err = rocker_event_process(rocker, desc_info);
1456                         if (err)
1457                                 dev_err(&pdev->dev, "event processing failed with err %d\n",
1458                                         err);
1459                 }
1460                 rocker_desc_gen_clear(desc_info);
1461                 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1462                 credits++;
1463         }
1464         rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1465
1466         return IRQ_HANDLED;
1467 }
1468
1469 static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1470 {
1471         struct rocker_port *rocker_port = dev_id;
1472
1473         napi_schedule(&rocker_port->napi_tx);
1474         return IRQ_HANDLED;
1475 }
1476
1477 static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1478 {
1479         struct rocker_port *rocker_port = dev_id;
1480
1481         napi_schedule(&rocker_port->napi_rx);
1482         return IRQ_HANDLED;
1483 }
1484
1485 /********************
1486  * Command interface
1487  ********************/
1488
1489 typedef int (*rocker_cmd_cb_t)(struct rocker *rocker,
1490                                struct rocker_port *rocker_port,
1491                                struct rocker_desc_info *desc_info,
1492                                void *priv);
1493
1494 static int rocker_cmd_exec(struct rocker *rocker,
1495                            struct rocker_port *rocker_port,
1496                            rocker_cmd_cb_t prepare, void *prepare_priv,
1497                            rocker_cmd_cb_t process, void *process_priv,
1498                            bool nowait)
1499 {
1500         struct rocker_desc_info *desc_info;
1501         struct rocker_wait *wait;
1502         unsigned long flags;
1503         int err;
1504
1505         wait = rocker_wait_create(nowait ? GFP_ATOMIC : GFP_KERNEL);
1506         if (!wait)
1507                 return -ENOMEM;
1508         wait->nowait = nowait;
1509
1510         spin_lock_irqsave(&rocker->cmd_ring_lock, flags);
1511         desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1512         if (!desc_info) {
1513                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1514                 err = -EAGAIN;
1515                 goto out;
1516         }
1517         err = prepare(rocker, rocker_port, desc_info, prepare_priv);
1518         if (err) {
1519                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1520                 goto out;
1521         }
1522         rocker_desc_cookie_ptr_set(desc_info, wait);
1523         rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1524         spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1525
1526         if (nowait)
1527                 return 0;
1528
1529         if (!rocker_wait_event_timeout(wait, HZ / 10))
1530                 return -EIO;
1531
1532         err = rocker_desc_err(desc_info);
1533         if (err)
1534                 return err;
1535
1536         if (process)
1537                 err = process(rocker, rocker_port, desc_info, process_priv);
1538
1539         rocker_desc_gen_clear(desc_info);
1540 out:
1541         rocker_wait_destroy(wait);
1542         return err;
1543 }
1544
1545 static int
1546 rocker_cmd_get_port_settings_prep(struct rocker *rocker,
1547                                   struct rocker_port *rocker_port,
1548                                   struct rocker_desc_info *desc_info,
1549                                   void *priv)
1550 {
1551         struct rocker_tlv *cmd_info;
1552
1553         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1554                                ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1555                 return -EMSGSIZE;
1556         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1557         if (!cmd_info)
1558                 return -EMSGSIZE;
1559         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1560                                rocker_port->pport))
1561                 return -EMSGSIZE;
1562         rocker_tlv_nest_end(desc_info, cmd_info);
1563         return 0;
1564 }
1565
1566 static int
1567 rocker_cmd_get_port_settings_ethtool_proc(struct rocker *rocker,
1568                                           struct rocker_port *rocker_port,
1569                                           struct rocker_desc_info *desc_info,
1570                                           void *priv)
1571 {
1572         struct ethtool_cmd *ecmd = priv;
1573         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1574         struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1575         u32 speed;
1576         u8 duplex;
1577         u8 autoneg;
1578
1579         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1580         if (!attrs[ROCKER_TLV_CMD_INFO])
1581                 return -EIO;
1582
1583         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1584                                 attrs[ROCKER_TLV_CMD_INFO]);
1585         if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1586             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1587             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1588                 return -EIO;
1589
1590         speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1591         duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1592         autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1593
1594         ecmd->transceiver = XCVR_INTERNAL;
1595         ecmd->supported = SUPPORTED_TP;
1596         ecmd->phy_address = 0xff;
1597         ecmd->port = PORT_TP;
1598         ethtool_cmd_speed_set(ecmd, speed);
1599         ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1600         ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1601
1602         return 0;
1603 }
1604
1605 static int
1606 rocker_cmd_get_port_settings_macaddr_proc(struct rocker *rocker,
1607                                           struct rocker_port *rocker_port,
1608                                           struct rocker_desc_info *desc_info,
1609                                           void *priv)
1610 {
1611         unsigned char *macaddr = priv;
1612         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1613         struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1614         struct rocker_tlv *attr;
1615
1616         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1617         if (!attrs[ROCKER_TLV_CMD_INFO])
1618                 return -EIO;
1619
1620         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1621                                 attrs[ROCKER_TLV_CMD_INFO]);
1622         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1623         if (!attr)
1624                 return -EIO;
1625
1626         if (rocker_tlv_len(attr) != ETH_ALEN)
1627                 return -EINVAL;
1628
1629         ether_addr_copy(macaddr, rocker_tlv_data(attr));
1630         return 0;
1631 }
1632
1633 static int
1634 rocker_cmd_set_port_settings_ethtool_prep(struct rocker *rocker,
1635                                           struct rocker_port *rocker_port,
1636                                           struct rocker_desc_info *desc_info,
1637                                           void *priv)
1638 {
1639         struct ethtool_cmd *ecmd = priv;
1640         struct rocker_tlv *cmd_info;
1641
1642         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1643                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1644                 return -EMSGSIZE;
1645         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1646         if (!cmd_info)
1647                 return -EMSGSIZE;
1648         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1649                                rocker_port->pport))
1650                 return -EMSGSIZE;
1651         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1652                                ethtool_cmd_speed(ecmd)))
1653                 return -EMSGSIZE;
1654         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1655                               ecmd->duplex))
1656                 return -EMSGSIZE;
1657         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1658                               ecmd->autoneg))
1659                 return -EMSGSIZE;
1660         rocker_tlv_nest_end(desc_info, cmd_info);
1661         return 0;
1662 }
1663
1664 static int
1665 rocker_cmd_set_port_settings_macaddr_prep(struct rocker *rocker,
1666                                           struct rocker_port *rocker_port,
1667                                           struct rocker_desc_info *desc_info,
1668                                           void *priv)
1669 {
1670         unsigned char *macaddr = priv;
1671         struct rocker_tlv *cmd_info;
1672
1673         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1674                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1675                 return -EMSGSIZE;
1676         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1677         if (!cmd_info)
1678                 return -EMSGSIZE;
1679         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1680                                rocker_port->pport))
1681                 return -EMSGSIZE;
1682         if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1683                            ETH_ALEN, macaddr))
1684                 return -EMSGSIZE;
1685         rocker_tlv_nest_end(desc_info, cmd_info);
1686         return 0;
1687 }
1688
1689 static int
1690 rocker_cmd_set_port_learning_prep(struct rocker *rocker,
1691                                   struct rocker_port *rocker_port,
1692                                   struct rocker_desc_info *desc_info,
1693                                   void *priv)
1694 {
1695         struct rocker_tlv *cmd_info;
1696
1697         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1698                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1699                 return -EMSGSIZE;
1700         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1701         if (!cmd_info)
1702                 return -EMSGSIZE;
1703         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1704                                rocker_port->pport))
1705                 return -EMSGSIZE;
1706         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1707                               !!(rocker_port->brport_flags & BR_LEARNING)))
1708                 return -EMSGSIZE;
1709         rocker_tlv_nest_end(desc_info, cmd_info);
1710         return 0;
1711 }
1712
1713 static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1714                                                 struct ethtool_cmd *ecmd)
1715 {
1716         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1717                                rocker_cmd_get_port_settings_prep, NULL,
1718                                rocker_cmd_get_port_settings_ethtool_proc,
1719                                ecmd, false);
1720 }
1721
1722 static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1723                                                 unsigned char *macaddr)
1724 {
1725         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1726                                rocker_cmd_get_port_settings_prep, NULL,
1727                                rocker_cmd_get_port_settings_macaddr_proc,
1728                                macaddr, false);
1729 }
1730
1731 static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1732                                                 struct ethtool_cmd *ecmd)
1733 {
1734         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1735                                rocker_cmd_set_port_settings_ethtool_prep,
1736                                ecmd, NULL, NULL, false);
1737 }
1738
1739 static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1740                                                 unsigned char *macaddr)
1741 {
1742         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1743                                rocker_cmd_set_port_settings_macaddr_prep,
1744                                macaddr, NULL, NULL, false);
1745 }
1746
1747 static int rocker_port_set_learning(struct rocker_port *rocker_port)
1748 {
1749         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1750                                rocker_cmd_set_port_learning_prep,
1751                                NULL, NULL, NULL, false);
1752 }
1753
1754 static int rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
1755                                            struct rocker_flow_tbl_entry *entry)
1756 {
1757         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1758                                entry->key.ig_port.in_pport))
1759                 return -EMSGSIZE;
1760         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1761                                entry->key.ig_port.in_pport_mask))
1762                 return -EMSGSIZE;
1763         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1764                                entry->key.ig_port.goto_tbl))
1765                 return -EMSGSIZE;
1766
1767         return 0;
1768 }
1769
1770 static int rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
1771                                         struct rocker_flow_tbl_entry *entry)
1772 {
1773         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1774                                entry->key.vlan.in_pport))
1775                 return -EMSGSIZE;
1776         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1777                                 entry->key.vlan.vlan_id))
1778                 return -EMSGSIZE;
1779         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1780                                 entry->key.vlan.vlan_id_mask))
1781                 return -EMSGSIZE;
1782         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1783                                entry->key.vlan.goto_tbl))
1784                 return -EMSGSIZE;
1785         if (entry->key.vlan.untagged &&
1786             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
1787                                 entry->key.vlan.new_vlan_id))
1788                 return -EMSGSIZE;
1789
1790         return 0;
1791 }
1792
1793 static int rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
1794                                             struct rocker_flow_tbl_entry *entry)
1795 {
1796         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1797                                entry->key.term_mac.in_pport))
1798                 return -EMSGSIZE;
1799         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1800                                entry->key.term_mac.in_pport_mask))
1801                 return -EMSGSIZE;
1802         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1803                                 entry->key.term_mac.eth_type))
1804                 return -EMSGSIZE;
1805         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1806                            ETH_ALEN, entry->key.term_mac.eth_dst))
1807                 return -EMSGSIZE;
1808         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1809                            ETH_ALEN, entry->key.term_mac.eth_dst_mask))
1810                 return -EMSGSIZE;
1811         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1812                                 entry->key.term_mac.vlan_id))
1813                 return -EMSGSIZE;
1814         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1815                                 entry->key.term_mac.vlan_id_mask))
1816                 return -EMSGSIZE;
1817         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1818                                entry->key.term_mac.goto_tbl))
1819                 return -EMSGSIZE;
1820         if (entry->key.term_mac.copy_to_cpu &&
1821             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1822                               entry->key.term_mac.copy_to_cpu))
1823                 return -EMSGSIZE;
1824
1825         return 0;
1826 }
1827
1828 static int
1829 rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
1830                                       struct rocker_flow_tbl_entry *entry)
1831 {
1832         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1833                                 entry->key.ucast_routing.eth_type))
1834                 return -EMSGSIZE;
1835         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
1836                                 entry->key.ucast_routing.dst4))
1837                 return -EMSGSIZE;
1838         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
1839                                 entry->key.ucast_routing.dst4_mask))
1840                 return -EMSGSIZE;
1841         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1842                                entry->key.ucast_routing.goto_tbl))
1843                 return -EMSGSIZE;
1844         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1845                                entry->key.ucast_routing.group_id))
1846                 return -EMSGSIZE;
1847
1848         return 0;
1849 }
1850
1851 static int rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
1852                                           struct rocker_flow_tbl_entry *entry)
1853 {
1854         if (entry->key.bridge.has_eth_dst &&
1855             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1856                            ETH_ALEN, entry->key.bridge.eth_dst))
1857                 return -EMSGSIZE;
1858         if (entry->key.bridge.has_eth_dst_mask &&
1859             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1860                            ETH_ALEN, entry->key.bridge.eth_dst_mask))
1861                 return -EMSGSIZE;
1862         if (entry->key.bridge.vlan_id &&
1863             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1864                                 entry->key.bridge.vlan_id))
1865                 return -EMSGSIZE;
1866         if (entry->key.bridge.tunnel_id &&
1867             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
1868                                entry->key.bridge.tunnel_id))
1869                 return -EMSGSIZE;
1870         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1871                                entry->key.bridge.goto_tbl))
1872                 return -EMSGSIZE;
1873         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1874                                entry->key.bridge.group_id))
1875                 return -EMSGSIZE;
1876         if (entry->key.bridge.copy_to_cpu &&
1877             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1878                               entry->key.bridge.copy_to_cpu))
1879                 return -EMSGSIZE;
1880
1881         return 0;
1882 }
1883
1884 static int rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
1885                                        struct rocker_flow_tbl_entry *entry)
1886 {
1887         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1888                                entry->key.acl.in_pport))
1889                 return -EMSGSIZE;
1890         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1891                                entry->key.acl.in_pport_mask))
1892                 return -EMSGSIZE;
1893         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
1894                            ETH_ALEN, entry->key.acl.eth_src))
1895                 return -EMSGSIZE;
1896         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
1897                            ETH_ALEN, entry->key.acl.eth_src_mask))
1898                 return -EMSGSIZE;
1899         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1900                            ETH_ALEN, entry->key.acl.eth_dst))
1901                 return -EMSGSIZE;
1902         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1903                            ETH_ALEN, entry->key.acl.eth_dst_mask))
1904                 return -EMSGSIZE;
1905         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1906                                 entry->key.acl.eth_type))
1907                 return -EMSGSIZE;
1908         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1909                                 entry->key.acl.vlan_id))
1910                 return -EMSGSIZE;
1911         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1912                                 entry->key.acl.vlan_id_mask))
1913                 return -EMSGSIZE;
1914
1915         switch (ntohs(entry->key.acl.eth_type)) {
1916         case ETH_P_IP:
1917         case ETH_P_IPV6:
1918                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
1919                                       entry->key.acl.ip_proto))
1920                         return -EMSGSIZE;
1921                 if (rocker_tlv_put_u8(desc_info,
1922                                       ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
1923                                       entry->key.acl.ip_proto_mask))
1924                         return -EMSGSIZE;
1925                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
1926                                       entry->key.acl.ip_tos & 0x3f))
1927                         return -EMSGSIZE;
1928                 if (rocker_tlv_put_u8(desc_info,
1929                                       ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
1930                                       entry->key.acl.ip_tos_mask & 0x3f))
1931                         return -EMSGSIZE;
1932                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
1933                                       (entry->key.acl.ip_tos & 0xc0) >> 6))
1934                         return -EMSGSIZE;
1935                 if (rocker_tlv_put_u8(desc_info,
1936                                       ROCKER_TLV_OF_DPA_IP_ECN_MASK,
1937                                       (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
1938                         return -EMSGSIZE;
1939                 break;
1940         }
1941
1942         if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
1943             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1944                                entry->key.acl.group_id))
1945                 return -EMSGSIZE;
1946
1947         return 0;
1948 }
1949
1950 static int rocker_cmd_flow_tbl_add(struct rocker *rocker,
1951                                    struct rocker_port *rocker_port,
1952                                    struct rocker_desc_info *desc_info,
1953                                    void *priv)
1954 {
1955         struct rocker_flow_tbl_entry *entry = priv;
1956         struct rocker_tlv *cmd_info;
1957         int err = 0;
1958
1959         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
1960                 return -EMSGSIZE;
1961         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1962         if (!cmd_info)
1963                 return -EMSGSIZE;
1964         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
1965                                entry->key.tbl_id))
1966                 return -EMSGSIZE;
1967         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
1968                                entry->key.priority))
1969                 return -EMSGSIZE;
1970         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
1971                 return -EMSGSIZE;
1972         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
1973                                entry->cookie))
1974                 return -EMSGSIZE;
1975
1976         switch (entry->key.tbl_id) {
1977         case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
1978                 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
1979                 break;
1980         case ROCKER_OF_DPA_TABLE_ID_VLAN:
1981                 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
1982                 break;
1983         case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
1984                 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
1985                 break;
1986         case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
1987                 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
1988                 break;
1989         case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
1990                 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
1991                 break;
1992         case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
1993                 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
1994                 break;
1995         default:
1996                 err = -ENOTSUPP;
1997                 break;
1998         }
1999
2000         if (err)
2001                 return err;
2002
2003         rocker_tlv_nest_end(desc_info, cmd_info);
2004
2005         return 0;
2006 }
2007
2008 static int rocker_cmd_flow_tbl_del(struct rocker *rocker,
2009                                    struct rocker_port *rocker_port,
2010                                    struct rocker_desc_info *desc_info,
2011                                    void *priv)
2012 {
2013         const struct rocker_flow_tbl_entry *entry = priv;
2014         struct rocker_tlv *cmd_info;
2015
2016         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2017                 return -EMSGSIZE;
2018         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2019         if (!cmd_info)
2020                 return -EMSGSIZE;
2021         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2022                                entry->cookie))
2023                 return -EMSGSIZE;
2024         rocker_tlv_nest_end(desc_info, cmd_info);
2025
2026         return 0;
2027 }
2028
2029 static int
2030 rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
2031                                       struct rocker_group_tbl_entry *entry)
2032 {
2033         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT,
2034                                ROCKER_GROUP_PORT_GET(entry->group_id)))
2035                 return -EMSGSIZE;
2036         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
2037                               entry->l2_interface.pop_vlan))
2038                 return -EMSGSIZE;
2039
2040         return 0;
2041 }
2042
2043 static int
2044 rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
2045                                     struct rocker_group_tbl_entry *entry)
2046 {
2047         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2048                                entry->l2_rewrite.group_id))
2049                 return -EMSGSIZE;
2050         if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
2051             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2052                            ETH_ALEN, entry->l2_rewrite.eth_src))
2053                 return -EMSGSIZE;
2054         if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
2055             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2056                            ETH_ALEN, entry->l2_rewrite.eth_dst))
2057                 return -EMSGSIZE;
2058         if (entry->l2_rewrite.vlan_id &&
2059             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2060                                 entry->l2_rewrite.vlan_id))
2061                 return -EMSGSIZE;
2062
2063         return 0;
2064 }
2065
2066 static int
2067 rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
2068                                    struct rocker_group_tbl_entry *entry)
2069 {
2070         int i;
2071         struct rocker_tlv *group_ids;
2072
2073         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
2074                                entry->group_count))
2075                 return -EMSGSIZE;
2076
2077         group_ids = rocker_tlv_nest_start(desc_info,
2078                                           ROCKER_TLV_OF_DPA_GROUP_IDS);
2079         if (!group_ids)
2080                 return -EMSGSIZE;
2081
2082         for (i = 0; i < entry->group_count; i++)
2083                 /* Note TLV array is 1-based */
2084                 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
2085                         return -EMSGSIZE;
2086
2087         rocker_tlv_nest_end(desc_info, group_ids);
2088
2089         return 0;
2090 }
2091
2092 static int
2093 rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
2094                                     struct rocker_group_tbl_entry *entry)
2095 {
2096         if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
2097             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2098                            ETH_ALEN, entry->l3_unicast.eth_src))
2099                 return -EMSGSIZE;
2100         if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
2101             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2102                            ETH_ALEN, entry->l3_unicast.eth_dst))
2103                 return -EMSGSIZE;
2104         if (entry->l3_unicast.vlan_id &&
2105             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2106                                 entry->l3_unicast.vlan_id))
2107                 return -EMSGSIZE;
2108         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
2109                               entry->l3_unicast.ttl_check))
2110                 return -EMSGSIZE;
2111         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2112                                entry->l3_unicast.group_id))
2113                 return -EMSGSIZE;
2114
2115         return 0;
2116 }
2117
2118 static int rocker_cmd_group_tbl_add(struct rocker *rocker,
2119                                     struct rocker_port *rocker_port,
2120                                     struct rocker_desc_info *desc_info,
2121                                     void *priv)
2122 {
2123         struct rocker_group_tbl_entry *entry = priv;
2124         struct rocker_tlv *cmd_info;
2125         int err = 0;
2126
2127         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2128                 return -EMSGSIZE;
2129         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2130         if (!cmd_info)
2131                 return -EMSGSIZE;
2132
2133         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2134                                entry->group_id))
2135                 return -EMSGSIZE;
2136
2137         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2138         case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
2139                 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
2140                 break;
2141         case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
2142                 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
2143                 break;
2144         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2145         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2146                 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
2147                 break;
2148         case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
2149                 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
2150                 break;
2151         default:
2152                 err = -ENOTSUPP;
2153                 break;
2154         }
2155
2156         if (err)
2157                 return err;
2158
2159         rocker_tlv_nest_end(desc_info, cmd_info);
2160
2161         return 0;
2162 }
2163
2164 static int rocker_cmd_group_tbl_del(struct rocker *rocker,
2165                                     struct rocker_port *rocker_port,
2166                                     struct rocker_desc_info *desc_info,
2167                                     void *priv)
2168 {
2169         const struct rocker_group_tbl_entry *entry = priv;
2170         struct rocker_tlv *cmd_info;
2171
2172         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2173                 return -EMSGSIZE;
2174         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2175         if (!cmd_info)
2176                 return -EMSGSIZE;
2177         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2178                                entry->group_id))
2179                 return -EMSGSIZE;
2180         rocker_tlv_nest_end(desc_info, cmd_info);
2181
2182         return 0;
2183 }
2184
2185 /***************************************************
2186  * Flow, group, FDB, internal VLAN and neigh tables
2187  ***************************************************/
2188
2189 static int rocker_init_tbls(struct rocker *rocker)
2190 {
2191         hash_init(rocker->flow_tbl);
2192         spin_lock_init(&rocker->flow_tbl_lock);
2193
2194         hash_init(rocker->group_tbl);
2195         spin_lock_init(&rocker->group_tbl_lock);
2196
2197         hash_init(rocker->fdb_tbl);
2198         spin_lock_init(&rocker->fdb_tbl_lock);
2199
2200         hash_init(rocker->internal_vlan_tbl);
2201         spin_lock_init(&rocker->internal_vlan_tbl_lock);
2202
2203         hash_init(rocker->neigh_tbl);
2204         spin_lock_init(&rocker->neigh_tbl_lock);
2205
2206         return 0;
2207 }
2208
2209 static void rocker_free_tbls(struct rocker *rocker)
2210 {
2211         unsigned long flags;
2212         struct rocker_flow_tbl_entry *flow_entry;
2213         struct rocker_group_tbl_entry *group_entry;
2214         struct rocker_fdb_tbl_entry *fdb_entry;
2215         struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
2216         struct rocker_neigh_tbl_entry *neigh_entry;
2217         struct hlist_node *tmp;
2218         int bkt;
2219
2220         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2221         hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
2222                 hash_del(&flow_entry->entry);
2223         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2224
2225         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2226         hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
2227                 hash_del(&group_entry->entry);
2228         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2229
2230         spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
2231         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
2232                 hash_del(&fdb_entry->entry);
2233         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
2234
2235         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
2236         hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
2237                            tmp, internal_vlan_entry, entry)
2238                 hash_del(&internal_vlan_entry->entry);
2239         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
2240
2241         spin_lock_irqsave(&rocker->neigh_tbl_lock, flags);
2242         hash_for_each_safe(rocker->neigh_tbl, bkt, tmp, neigh_entry, entry)
2243                 hash_del(&neigh_entry->entry);
2244         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, flags);
2245 }
2246
2247 static struct rocker_flow_tbl_entry *
2248 rocker_flow_tbl_find(struct rocker *rocker, struct rocker_flow_tbl_entry *match)
2249 {
2250         struct rocker_flow_tbl_entry *found;
2251         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2252
2253         hash_for_each_possible(rocker->flow_tbl, found,
2254                                entry, match->key_crc32) {
2255                 if (memcmp(&found->key, &match->key, key_len) == 0)
2256                         return found;
2257         }
2258
2259         return NULL;
2260 }
2261
2262 static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
2263                                struct rocker_flow_tbl_entry *match,
2264                                bool nowait)
2265 {
2266         struct rocker *rocker = rocker_port->rocker;
2267         struct rocker_flow_tbl_entry *found;
2268         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2269         unsigned long flags;
2270
2271         match->key_crc32 = crc32(~0, &match->key, key_len);
2272
2273         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2274
2275         found = rocker_flow_tbl_find(rocker, match);
2276
2277         if (found) {
2278                 match->cookie = found->cookie;
2279                 hash_del(&found->entry);
2280                 kfree(found);
2281                 found = match;
2282                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD;
2283         } else {
2284                 found = match;
2285                 found->cookie = rocker->flow_tbl_next_cookie++;
2286                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD;
2287         }
2288
2289         hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
2290
2291         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2292
2293         return rocker_cmd_exec(rocker, rocker_port,
2294                                rocker_cmd_flow_tbl_add,
2295                                found, NULL, NULL, nowait);
2296 }
2297
2298 static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
2299                                struct rocker_flow_tbl_entry *match,
2300                                bool nowait)
2301 {
2302         struct rocker *rocker = rocker_port->rocker;
2303         struct rocker_flow_tbl_entry *found;
2304         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2305         unsigned long flags;
2306         int err = 0;
2307
2308         match->key_crc32 = crc32(~0, &match->key, key_len);
2309
2310         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2311
2312         found = rocker_flow_tbl_find(rocker, match);
2313
2314         if (found) {
2315                 hash_del(&found->entry);
2316                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL;
2317         }
2318
2319         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2320
2321         kfree(match);
2322
2323         if (found) {
2324                 err = rocker_cmd_exec(rocker, rocker_port,
2325                                       rocker_cmd_flow_tbl_del,
2326                                       found, NULL, NULL, nowait);
2327                 kfree(found);
2328         }
2329
2330         return err;
2331 }
2332
2333 static gfp_t rocker_op_flags_gfp(int flags)
2334 {
2335         return flags & ROCKER_OP_FLAG_NOWAIT ? GFP_ATOMIC : GFP_KERNEL;
2336 }
2337
2338 static int rocker_flow_tbl_do(struct rocker_port *rocker_port,
2339                               int flags, struct rocker_flow_tbl_entry *entry)
2340 {
2341         bool nowait = flags & ROCKER_OP_FLAG_NOWAIT;
2342
2343         if (flags & ROCKER_OP_FLAG_REMOVE)
2344                 return rocker_flow_tbl_del(rocker_port, entry, nowait);
2345         else
2346                 return rocker_flow_tbl_add(rocker_port, entry, nowait);
2347 }
2348
2349 static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port,
2350                                    int flags, u32 in_pport, u32 in_pport_mask,
2351                                    enum rocker_of_dpa_table_id goto_tbl)
2352 {
2353         struct rocker_flow_tbl_entry *entry;
2354
2355         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2356         if (!entry)
2357                 return -ENOMEM;
2358
2359         entry->key.priority = ROCKER_PRIORITY_IG_PORT;
2360         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
2361         entry->key.ig_port.in_pport = in_pport;
2362         entry->key.ig_port.in_pport_mask = in_pport_mask;
2363         entry->key.ig_port.goto_tbl = goto_tbl;
2364
2365         return rocker_flow_tbl_do(rocker_port, flags, entry);
2366 }
2367
2368 static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port,
2369                                 int flags, u32 in_pport,
2370                                 __be16 vlan_id, __be16 vlan_id_mask,
2371                                 enum rocker_of_dpa_table_id goto_tbl,
2372                                 bool untagged, __be16 new_vlan_id)
2373 {
2374         struct rocker_flow_tbl_entry *entry;
2375
2376         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2377         if (!entry)
2378                 return -ENOMEM;
2379
2380         entry->key.priority = ROCKER_PRIORITY_VLAN;
2381         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
2382         entry->key.vlan.in_pport = in_pport;
2383         entry->key.vlan.vlan_id = vlan_id;
2384         entry->key.vlan.vlan_id_mask = vlan_id_mask;
2385         entry->key.vlan.goto_tbl = goto_tbl;
2386
2387         entry->key.vlan.untagged = untagged;
2388         entry->key.vlan.new_vlan_id = new_vlan_id;
2389
2390         return rocker_flow_tbl_do(rocker_port, flags, entry);
2391 }
2392
2393 static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port,
2394                                     u32 in_pport, u32 in_pport_mask,
2395                                     __be16 eth_type, const u8 *eth_dst,
2396                                     const u8 *eth_dst_mask, __be16 vlan_id,
2397                                     __be16 vlan_id_mask, bool copy_to_cpu,
2398                                     int flags)
2399 {
2400         struct rocker_flow_tbl_entry *entry;
2401
2402         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2403         if (!entry)
2404                 return -ENOMEM;
2405
2406         if (is_multicast_ether_addr(eth_dst)) {
2407                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST;
2408                 entry->key.term_mac.goto_tbl =
2409                          ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
2410         } else {
2411                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST;
2412                 entry->key.term_mac.goto_tbl =
2413                          ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2414         }
2415
2416         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2417         entry->key.term_mac.in_pport = in_pport;
2418         entry->key.term_mac.in_pport_mask = in_pport_mask;
2419         entry->key.term_mac.eth_type = eth_type;
2420         ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
2421         ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
2422         entry->key.term_mac.vlan_id = vlan_id;
2423         entry->key.term_mac.vlan_id_mask = vlan_id_mask;
2424         entry->key.term_mac.copy_to_cpu = copy_to_cpu;
2425
2426         return rocker_flow_tbl_do(rocker_port, flags, entry);
2427 }
2428
2429 static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port,
2430                                   int flags,
2431                                   const u8 *eth_dst, const u8 *eth_dst_mask,
2432                                   __be16 vlan_id, u32 tunnel_id,
2433                                   enum rocker_of_dpa_table_id goto_tbl,
2434                                   u32 group_id, bool copy_to_cpu)
2435 {
2436         struct rocker_flow_tbl_entry *entry;
2437         u32 priority;
2438         bool vlan_bridging = !!vlan_id;
2439         bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
2440         bool wild = false;
2441
2442         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2443         if (!entry)
2444                 return -ENOMEM;
2445
2446         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
2447
2448         if (eth_dst) {
2449                 entry->key.bridge.has_eth_dst = 1;
2450                 ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
2451         }
2452         if (eth_dst_mask) {
2453                 entry->key.bridge.has_eth_dst_mask = 1;
2454                 ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
2455                 if (memcmp(eth_dst_mask, ff_mac, ETH_ALEN))
2456                         wild = true;
2457         }
2458
2459         priority = ROCKER_PRIORITY_UNKNOWN;
2460         if (vlan_bridging && dflt && wild)
2461                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
2462         else if (vlan_bridging && dflt && !wild)
2463                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
2464         else if (vlan_bridging && !dflt)
2465                 priority = ROCKER_PRIORITY_BRIDGING_VLAN;
2466         else if (!vlan_bridging && dflt && wild)
2467                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
2468         else if (!vlan_bridging && dflt && !wild)
2469                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
2470         else if (!vlan_bridging && !dflt)
2471                 priority = ROCKER_PRIORITY_BRIDGING_TENANT;
2472
2473         entry->key.priority = priority;
2474         entry->key.bridge.vlan_id = vlan_id;
2475         entry->key.bridge.tunnel_id = tunnel_id;
2476         entry->key.bridge.goto_tbl = goto_tbl;
2477         entry->key.bridge.group_id = group_id;
2478         entry->key.bridge.copy_to_cpu = copy_to_cpu;
2479
2480         return rocker_flow_tbl_do(rocker_port, flags, entry);
2481 }
2482
2483 static int rocker_flow_tbl_ucast4_routing(struct rocker_port *rocker_port,
2484                                           __be16 eth_type, __be32 dst,
2485                                           __be32 dst_mask, u32 priority,
2486                                           enum rocker_of_dpa_table_id goto_tbl,
2487                                           u32 group_id, int flags)
2488 {
2489         struct rocker_flow_tbl_entry *entry;
2490
2491         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2492         if (!entry)
2493                 return -ENOMEM;
2494
2495         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2496         entry->key.priority = priority;
2497         entry->key.ucast_routing.eth_type = eth_type;
2498         entry->key.ucast_routing.dst4 = dst;
2499         entry->key.ucast_routing.dst4_mask = dst_mask;
2500         entry->key.ucast_routing.goto_tbl = goto_tbl;
2501         entry->key.ucast_routing.group_id = group_id;
2502         entry->key_len = offsetof(struct rocker_flow_tbl_key,
2503                                   ucast_routing.group_id);
2504
2505         return rocker_flow_tbl_do(rocker_port, flags, entry);
2506 }
2507
2508 static int rocker_flow_tbl_acl(struct rocker_port *rocker_port,
2509                                int flags, u32 in_pport,
2510                                u32 in_pport_mask,
2511                                const u8 *eth_src, const u8 *eth_src_mask,
2512                                const u8 *eth_dst, const u8 *eth_dst_mask,
2513                                __be16 eth_type,
2514                                __be16 vlan_id, __be16 vlan_id_mask,
2515                                u8 ip_proto, u8 ip_proto_mask,
2516                                u8 ip_tos, u8 ip_tos_mask,
2517                                u32 group_id)
2518 {
2519         u32 priority;
2520         struct rocker_flow_tbl_entry *entry;
2521
2522         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2523         if (!entry)
2524                 return -ENOMEM;
2525
2526         priority = ROCKER_PRIORITY_ACL_NORMAL;
2527         if (eth_dst && eth_dst_mask) {
2528                 if (memcmp(eth_dst_mask, mcast_mac, ETH_ALEN) == 0)
2529                         priority = ROCKER_PRIORITY_ACL_DFLT;
2530                 else if (is_link_local_ether_addr(eth_dst))
2531                         priority = ROCKER_PRIORITY_ACL_CTRL;
2532         }
2533
2534         entry->key.priority = priority;
2535         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2536         entry->key.acl.in_pport = in_pport;
2537         entry->key.acl.in_pport_mask = in_pport_mask;
2538
2539         if (eth_src)
2540                 ether_addr_copy(entry->key.acl.eth_src, eth_src);
2541         if (eth_src_mask)
2542                 ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
2543         if (eth_dst)
2544                 ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
2545         if (eth_dst_mask)
2546                 ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
2547
2548         entry->key.acl.eth_type = eth_type;
2549         entry->key.acl.vlan_id = vlan_id;
2550         entry->key.acl.vlan_id_mask = vlan_id_mask;
2551         entry->key.acl.ip_proto = ip_proto;
2552         entry->key.acl.ip_proto_mask = ip_proto_mask;
2553         entry->key.acl.ip_tos = ip_tos;
2554         entry->key.acl.ip_tos_mask = ip_tos_mask;
2555         entry->key.acl.group_id = group_id;
2556
2557         return rocker_flow_tbl_do(rocker_port, flags, entry);
2558 }
2559
2560 static struct rocker_group_tbl_entry *
2561 rocker_group_tbl_find(struct rocker *rocker,
2562                       struct rocker_group_tbl_entry *match)
2563 {
2564         struct rocker_group_tbl_entry *found;
2565
2566         hash_for_each_possible(rocker->group_tbl, found,
2567                                entry, match->group_id) {
2568                 if (found->group_id == match->group_id)
2569                         return found;
2570         }
2571
2572         return NULL;
2573 }
2574
2575 static void rocker_group_tbl_entry_free(struct rocker_group_tbl_entry *entry)
2576 {
2577         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2578         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2579         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2580                 kfree(entry->group_ids);
2581                 break;
2582         default:
2583                 break;
2584         }
2585         kfree(entry);
2586 }
2587
2588 static int rocker_group_tbl_add(struct rocker_port *rocker_port,
2589                                 struct rocker_group_tbl_entry *match,
2590                                 bool nowait)
2591 {
2592         struct rocker *rocker = rocker_port->rocker;
2593         struct rocker_group_tbl_entry *found;
2594         unsigned long flags;
2595
2596         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2597
2598         found = rocker_group_tbl_find(rocker, match);
2599
2600         if (found) {
2601                 hash_del(&found->entry);
2602                 rocker_group_tbl_entry_free(found);
2603                 found = match;
2604                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
2605         } else {
2606                 found = match;
2607                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
2608         }
2609
2610         hash_add(rocker->group_tbl, &found->entry, found->group_id);
2611
2612         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2613
2614         return rocker_cmd_exec(rocker, rocker_port,
2615                                rocker_cmd_group_tbl_add,
2616                                found, NULL, NULL, nowait);
2617 }
2618
2619 static int rocker_group_tbl_del(struct rocker_port *rocker_port,
2620                                 struct rocker_group_tbl_entry *match,
2621                                 bool nowait)
2622 {
2623         struct rocker *rocker = rocker_port->rocker;
2624         struct rocker_group_tbl_entry *found;
2625         unsigned long flags;
2626         int err = 0;
2627
2628         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2629
2630         found = rocker_group_tbl_find(rocker, match);
2631
2632         if (found) {
2633                 hash_del(&found->entry);
2634                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
2635         }
2636
2637         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2638
2639         rocker_group_tbl_entry_free(match);
2640
2641         if (found) {
2642                 err = rocker_cmd_exec(rocker, rocker_port,
2643                                       rocker_cmd_group_tbl_del,
2644                                       found, NULL, NULL, nowait);
2645                 rocker_group_tbl_entry_free(found);
2646         }
2647
2648         return err;
2649 }
2650
2651 static int rocker_group_tbl_do(struct rocker_port *rocker_port,
2652                                int flags, struct rocker_group_tbl_entry *entry)
2653 {
2654         bool nowait = flags & ROCKER_OP_FLAG_NOWAIT;
2655
2656         if (flags & ROCKER_OP_FLAG_REMOVE)
2657                 return rocker_group_tbl_del(rocker_port, entry, nowait);
2658         else
2659                 return rocker_group_tbl_add(rocker_port, entry, nowait);
2660 }
2661
2662 static int rocker_group_l2_interface(struct rocker_port *rocker_port,
2663                                      int flags, __be16 vlan_id,
2664                                      u32 out_pport, int pop_vlan)
2665 {
2666         struct rocker_group_tbl_entry *entry;
2667
2668         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2669         if (!entry)
2670                 return -ENOMEM;
2671
2672         entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
2673         entry->l2_interface.pop_vlan = pop_vlan;
2674
2675         return rocker_group_tbl_do(rocker_port, flags, entry);
2676 }
2677
2678 static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
2679                                    int flags, u8 group_count,
2680                                    u32 *group_ids, u32 group_id)
2681 {
2682         struct rocker_group_tbl_entry *entry;
2683
2684         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2685         if (!entry)
2686                 return -ENOMEM;
2687
2688         entry->group_id = group_id;
2689         entry->group_count = group_count;
2690
2691         entry->group_ids = kcalloc(group_count, sizeof(u32),
2692                                    rocker_op_flags_gfp(flags));
2693         if (!entry->group_ids) {
2694                 kfree(entry);
2695                 return -ENOMEM;
2696         }
2697         memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
2698
2699         return rocker_group_tbl_do(rocker_port, flags, entry);
2700 }
2701
2702 static int rocker_group_l2_flood(struct rocker_port *rocker_port,
2703                                  int flags, __be16 vlan_id,
2704                                  u8 group_count, u32 *group_ids,
2705                                  u32 group_id)
2706 {
2707         return rocker_group_l2_fan_out(rocker_port, flags,
2708                                        group_count, group_ids,
2709                                        group_id);
2710 }
2711
2712 static int rocker_group_l3_unicast(struct rocker_port *rocker_port,
2713                                    int flags, u32 index, u8 *src_mac,
2714                                    u8 *dst_mac, __be16 vlan_id,
2715                                    bool ttl_check, u32 pport)
2716 {
2717         struct rocker_group_tbl_entry *entry;
2718
2719         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2720         if (!entry)
2721                 return -ENOMEM;
2722
2723         entry->group_id = ROCKER_GROUP_L3_UNICAST(index);
2724         if (src_mac)
2725                 ether_addr_copy(entry->l3_unicast.eth_src, src_mac);
2726         if (dst_mac)
2727                 ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac);
2728         entry->l3_unicast.vlan_id = vlan_id;
2729         entry->l3_unicast.ttl_check = ttl_check;
2730         entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport);
2731
2732         return rocker_group_tbl_do(rocker_port, flags, entry);
2733 }
2734
2735 static struct rocker_neigh_tbl_entry *
2736         rocker_neigh_tbl_find(struct rocker *rocker, __be32 ip_addr)
2737 {
2738         struct rocker_neigh_tbl_entry *found;
2739
2740         hash_for_each_possible(rocker->neigh_tbl, found, entry, (u32)ip_addr)
2741                 if (found->ip_addr == ip_addr)
2742                         return found;
2743
2744         return NULL;
2745 }
2746
2747 static void _rocker_neigh_add(struct rocker *rocker,
2748                               struct rocker_neigh_tbl_entry *entry)
2749 {
2750         entry->index = rocker->neigh_tbl_next_index++;
2751         entry->ref_count++;
2752         hash_add(rocker->neigh_tbl, &entry->entry, (u32)entry->ip_addr);
2753 }
2754
2755 static void _rocker_neigh_del(struct rocker *rocker,
2756                               struct rocker_neigh_tbl_entry *entry)
2757 {
2758         if (--entry->ref_count == 0) {
2759                 hash_del(&entry->entry);
2760                 kfree(entry);
2761         }
2762 }
2763
2764 static void _rocker_neigh_update(struct rocker *rocker,
2765                                  struct rocker_neigh_tbl_entry *entry,
2766                                  u8 *eth_dst, bool ttl_check)
2767 {
2768         if (eth_dst) {
2769                 ether_addr_copy(entry->eth_dst, eth_dst);
2770                 entry->ttl_check = ttl_check;
2771         } else {
2772                 entry->ref_count++;
2773         }
2774 }
2775
2776 static int rocker_port_ipv4_neigh(struct rocker_port *rocker_port,
2777                                   int flags, __be32 ip_addr, u8 *eth_dst)
2778 {
2779         struct rocker *rocker = rocker_port->rocker;
2780         struct rocker_neigh_tbl_entry *entry;
2781         struct rocker_neigh_tbl_entry *found;
2782         unsigned long lock_flags;
2783         __be16 eth_type = htons(ETH_P_IP);
2784         enum rocker_of_dpa_table_id goto_tbl =
2785                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2786         u32 group_id;
2787         u32 priority = 0;
2788         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2789         bool updating;
2790         bool removing;
2791         int err = 0;
2792
2793         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2794         if (!entry)
2795                 return -ENOMEM;
2796
2797         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
2798
2799         found = rocker_neigh_tbl_find(rocker, ip_addr);
2800
2801         updating = found && adding;
2802         removing = found && !adding;
2803         adding = !found && adding;
2804
2805         if (adding) {
2806                 entry->ip_addr = ip_addr;
2807                 entry->dev = rocker_port->dev;
2808                 ether_addr_copy(entry->eth_dst, eth_dst);
2809                 entry->ttl_check = true;
2810                 _rocker_neigh_add(rocker, entry);
2811         } else if (removing) {
2812                 memcpy(entry, found, sizeof(*entry));
2813                 _rocker_neigh_del(rocker, found);
2814         } else if (updating) {
2815                 _rocker_neigh_update(rocker, found, eth_dst, true);
2816                 memcpy(entry, found, sizeof(*entry));
2817         } else {
2818                 err = -ENOENT;
2819         }
2820
2821         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
2822
2823         if (err)
2824                 goto err_out;
2825
2826         /* For each active neighbor, we have an L3 unicast group and
2827          * a /32 route to the neighbor, which uses the L3 unicast
2828          * group.  The L3 unicast group can also be referred to by
2829          * other routes' nexthops.
2830          */
2831
2832         err = rocker_group_l3_unicast(rocker_port, flags,
2833                                       entry->index,
2834                                       rocker_port->dev->dev_addr,
2835                                       entry->eth_dst,
2836                                       rocker_port->internal_vlan_id,
2837                                       entry->ttl_check,
2838                                       rocker_port->pport);
2839         if (err) {
2840                 netdev_err(rocker_port->dev,
2841                            "Error (%d) L3 unicast group index %d\n",
2842                            err, entry->index);
2843                 goto err_out;
2844         }
2845
2846         if (adding || removing) {
2847                 group_id = ROCKER_GROUP_L3_UNICAST(entry->index);
2848                 err = rocker_flow_tbl_ucast4_routing(rocker_port,
2849                                                      eth_type, ip_addr,
2850                                                      inet_make_mask(32),
2851                                                      priority, goto_tbl,
2852                                                      group_id, flags);
2853
2854                 if (err)
2855                         netdev_err(rocker_port->dev,
2856                                    "Error (%d) /32 unicast route %pI4 group 0x%08x\n",
2857                                    err, &entry->ip_addr, group_id);
2858         }
2859
2860 err_out:
2861         if (!adding)
2862                 kfree(entry);
2863
2864         return err;
2865 }
2866
2867 static int rocker_port_ipv4_resolve(struct rocker_port *rocker_port,
2868                                     __be32 ip_addr)
2869 {
2870         struct net_device *dev = rocker_port->dev;
2871         struct neighbour *n = __ipv4_neigh_lookup(dev, (u32)ip_addr);
2872         int err = 0;
2873
2874         if (!n)
2875                 n = neigh_create(&arp_tbl, &ip_addr, dev);
2876         if (!n)
2877                 return -ENOMEM;
2878
2879         /* If the neigh is already resolved, then go ahead and
2880          * install the entry, otherwise start the ARP process to
2881          * resolve the neigh.
2882          */
2883
2884         if (n->nud_state & NUD_VALID)
2885                 err = rocker_port_ipv4_neigh(rocker_port, 0, ip_addr, n->ha);
2886         else
2887                 neigh_event_send(n, NULL);
2888
2889         return err;
2890 }
2891
2892 static int rocker_port_ipv4_nh(struct rocker_port *rocker_port, int flags,
2893                                __be32 ip_addr, u32 *index)
2894 {
2895         struct rocker *rocker = rocker_port->rocker;
2896         struct rocker_neigh_tbl_entry *entry;
2897         struct rocker_neigh_tbl_entry *found;
2898         unsigned long lock_flags;
2899         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2900         bool updating;
2901         bool removing;
2902         bool resolved = true;
2903         int err = 0;
2904
2905         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2906         if (!entry)
2907                 return -ENOMEM;
2908
2909         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
2910
2911         found = rocker_neigh_tbl_find(rocker, ip_addr);
2912         if (found)
2913                 *index = found->index;
2914
2915         updating = found && adding;
2916         removing = found && !adding;
2917         adding = !found && adding;
2918
2919         if (adding) {
2920                 entry->ip_addr = ip_addr;
2921                 entry->dev = rocker_port->dev;
2922                 _rocker_neigh_add(rocker, entry);
2923                 *index = entry->index;
2924                 resolved = false;
2925         } else if (removing) {
2926                 _rocker_neigh_del(rocker, found);
2927         } else if (updating) {
2928                 _rocker_neigh_update(rocker, found, NULL, false);
2929                 resolved = !is_zero_ether_addr(found->eth_dst);
2930         } else {
2931                 err = -ENOENT;
2932         }
2933
2934         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
2935
2936         if (!adding)
2937                 kfree(entry);
2938
2939         if (err)
2940                 return err;
2941
2942         /* Resolved means neigh ip_addr is resolved to neigh mac. */
2943
2944         if (!resolved)
2945                 err = rocker_port_ipv4_resolve(rocker_port, ip_addr);
2946
2947         return err;
2948 }
2949
2950 static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
2951                                         int flags, __be16 vlan_id)
2952 {
2953         struct rocker_port *p;
2954         struct rocker *rocker = rocker_port->rocker;
2955         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
2956         u32 group_ids[rocker->port_count];
2957         u8 group_count = 0;
2958         int err;
2959         int i;
2960
2961         /* Adjust the flood group for this VLAN.  The flood group
2962          * references an L2 interface group for each port in this
2963          * VLAN.
2964          */
2965
2966         for (i = 0; i < rocker->port_count; i++) {
2967                 p = rocker->ports[i];
2968                 if (!rocker_port_is_bridged(p))
2969                         continue;
2970                 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
2971                         group_ids[group_count++] =
2972                                 ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport);
2973                 }
2974         }
2975
2976         /* If there are no bridged ports in this VLAN, we're done */
2977         if (group_count == 0)
2978                 return 0;
2979
2980         err = rocker_group_l2_flood(rocker_port, flags, vlan_id,
2981                                     group_count, group_ids,
2982                                     group_id);
2983         if (err)
2984                 netdev_err(rocker_port->dev,
2985                            "Error (%d) port VLAN l2 flood group\n", err);
2986
2987         return err;
2988 }
2989
2990 static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
2991                                       int flags, __be16 vlan_id,
2992                                       bool pop_vlan)
2993 {
2994         struct rocker *rocker = rocker_port->rocker;
2995         struct rocker_port *p;
2996         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2997         u32 out_pport;
2998         int ref = 0;
2999         int err;
3000         int i;
3001
3002         /* An L2 interface group for this port in this VLAN, but
3003          * only when port STP state is LEARNING|FORWARDING.
3004          */
3005
3006         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3007             rocker_port->stp_state == BR_STATE_FORWARDING) {
3008                 out_pport = rocker_port->pport;
3009                 err = rocker_group_l2_interface(rocker_port, flags,
3010                                                 vlan_id, out_pport,
3011                                                 pop_vlan);
3012                 if (err) {
3013                         netdev_err(rocker_port->dev,
3014                                    "Error (%d) port VLAN l2 group for pport %d\n",
3015                                    err, out_pport);
3016                         return err;
3017                 }
3018         }
3019
3020         /* An L2 interface group for this VLAN to CPU port.
3021          * Add when first port joins this VLAN and destroy when
3022          * last port leaves this VLAN.
3023          */
3024
3025         for (i = 0; i < rocker->port_count; i++) {
3026                 p = rocker->ports[i];
3027                 if (test_bit(ntohs(vlan_id), p->vlan_bitmap))
3028                         ref++;
3029         }
3030
3031         if ((!adding || ref != 1) && (adding || ref != 0))
3032                 return 0;
3033
3034         out_pport = 0;
3035         err = rocker_group_l2_interface(rocker_port, flags,
3036                                         vlan_id, out_pport,
3037                                         pop_vlan);
3038         if (err) {
3039                 netdev_err(rocker_port->dev,
3040                            "Error (%d) port VLAN l2 group for CPU port\n", err);
3041                 return err;
3042         }
3043
3044         return 0;
3045 }
3046
3047 static struct rocker_ctrl {
3048         const u8 *eth_dst;
3049         const u8 *eth_dst_mask;
3050         __be16 eth_type;
3051         bool acl;
3052         bool bridge;
3053         bool term;
3054         bool copy_to_cpu;
3055 } rocker_ctrls[] = {
3056         [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
3057                 /* pass link local multicast pkts up to CPU for filtering */
3058                 .eth_dst = ll_mac,
3059                 .eth_dst_mask = ll_mask,
3060                 .acl = true,
3061         },
3062         [ROCKER_CTRL_LOCAL_ARP] = {
3063                 /* pass local ARP pkts up to CPU */
3064                 .eth_dst = zero_mac,
3065                 .eth_dst_mask = zero_mac,
3066                 .eth_type = htons(ETH_P_ARP),
3067                 .acl = true,
3068         },
3069         [ROCKER_CTRL_IPV4_MCAST] = {
3070                 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
3071                 .eth_dst = ipv4_mcast,
3072                 .eth_dst_mask = ipv4_mask,
3073                 .eth_type = htons(ETH_P_IP),
3074                 .term  = true,
3075                 .copy_to_cpu = true,
3076         },
3077         [ROCKER_CTRL_IPV6_MCAST] = {
3078                 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
3079                 .eth_dst = ipv6_mcast,
3080                 .eth_dst_mask = ipv6_mask,
3081                 .eth_type = htons(ETH_P_IPV6),
3082                 .term  = true,
3083                 .copy_to_cpu = true,
3084         },
3085         [ROCKER_CTRL_DFLT_BRIDGING] = {
3086                 /* flood any pkts on vlan */
3087                 .bridge = true,
3088                 .copy_to_cpu = true,
3089         },
3090 };
3091
3092 static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
3093                                      int flags, struct rocker_ctrl *ctrl,
3094                                      __be16 vlan_id)
3095 {
3096         u32 in_pport = rocker_port->pport;
3097         u32 in_pport_mask = 0xffffffff;
3098         u32 out_pport = 0;
3099         u8 *eth_src = NULL;
3100         u8 *eth_src_mask = NULL;
3101         __be16 vlan_id_mask = htons(0xffff);
3102         u8 ip_proto = 0;
3103         u8 ip_proto_mask = 0;
3104         u8 ip_tos = 0;
3105         u8 ip_tos_mask = 0;
3106         u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3107         int err;
3108
3109         err = rocker_flow_tbl_acl(rocker_port, flags,
3110                                   in_pport, in_pport_mask,
3111                                   eth_src, eth_src_mask,
3112                                   ctrl->eth_dst, ctrl->eth_dst_mask,
3113                                   ctrl->eth_type,
3114                                   vlan_id, vlan_id_mask,
3115                                   ip_proto, ip_proto_mask,
3116                                   ip_tos, ip_tos_mask,
3117                                   group_id);
3118
3119         if (err)
3120                 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
3121
3122         return err;
3123 }
3124
3125 static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
3126                                         int flags, struct rocker_ctrl *ctrl,
3127                                         __be16 vlan_id)
3128 {
3129         enum rocker_of_dpa_table_id goto_tbl =
3130                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3131         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3132         u32 tunnel_id = 0;
3133         int err;
3134
3135         if (!rocker_port_is_bridged(rocker_port))
3136                 return 0;
3137
3138         err = rocker_flow_tbl_bridge(rocker_port, flags,
3139                                      ctrl->eth_dst, ctrl->eth_dst_mask,
3140                                      vlan_id, tunnel_id,
3141                                      goto_tbl, group_id, ctrl->copy_to_cpu);
3142
3143         if (err)
3144                 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
3145
3146         return err;
3147 }
3148
3149 static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
3150                                       int flags, struct rocker_ctrl *ctrl,
3151                                       __be16 vlan_id)
3152 {
3153         u32 in_pport_mask = 0xffffffff;
3154         __be16 vlan_id_mask = htons(0xffff);
3155         int err;
3156
3157         if (ntohs(vlan_id) == 0)
3158                 vlan_id = rocker_port->internal_vlan_id;
3159
3160         err = rocker_flow_tbl_term_mac(rocker_port,
3161                                        rocker_port->pport, in_pport_mask,
3162                                        ctrl->eth_type, ctrl->eth_dst,
3163                                        ctrl->eth_dst_mask, vlan_id,
3164                                        vlan_id_mask, ctrl->copy_to_cpu,
3165                                        flags);
3166
3167         if (err)
3168                 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
3169
3170         return err;
3171 }
3172
3173 static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port, int flags,
3174                                  struct rocker_ctrl *ctrl, __be16 vlan_id)
3175 {
3176         if (ctrl->acl)
3177                 return rocker_port_ctrl_vlan_acl(rocker_port, flags,
3178                                                  ctrl, vlan_id);
3179         if (ctrl->bridge)
3180                 return rocker_port_ctrl_vlan_bridge(rocker_port, flags,
3181                                                     ctrl, vlan_id);
3182
3183         if (ctrl->term)
3184                 return rocker_port_ctrl_vlan_term(rocker_port, flags,
3185                                                   ctrl, vlan_id);
3186
3187         return -EOPNOTSUPP;
3188 }
3189
3190 static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
3191                                      int flags, __be16 vlan_id)
3192 {
3193         int err = 0;
3194         int i;
3195
3196         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3197                 if (rocker_port->ctrls[i]) {
3198                         err = rocker_port_ctrl_vlan(rocker_port, flags,
3199                                                     &rocker_ctrls[i], vlan_id);
3200                         if (err)
3201                                 return err;
3202                 }
3203         }
3204
3205         return err;
3206 }
3207
3208 static int rocker_port_ctrl(struct rocker_port *rocker_port, int flags,
3209                             struct rocker_ctrl *ctrl)
3210 {
3211         u16 vid;
3212         int err = 0;
3213
3214         for (vid = 1; vid < VLAN_N_VID; vid++) {
3215                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3216                         continue;
3217                 err = rocker_port_ctrl_vlan(rocker_port, flags,
3218                                             ctrl, htons(vid));
3219                 if (err)
3220                         break;
3221         }
3222
3223         return err;
3224 }
3225
3226 static int rocker_port_vlan(struct rocker_port *rocker_port, int flags,
3227                             u16 vid)
3228 {
3229         enum rocker_of_dpa_table_id goto_tbl =
3230                 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
3231         u32 in_pport = rocker_port->pport;
3232         __be16 vlan_id = htons(vid);
3233         __be16 vlan_id_mask = htons(0xffff);
3234         __be16 internal_vlan_id;
3235         bool untagged;
3236         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3237         int err;
3238
3239         internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
3240
3241         if (adding && test_and_set_bit(ntohs(internal_vlan_id),
3242                                        rocker_port->vlan_bitmap))
3243                         return 0; /* already added */
3244         else if (!adding && !test_and_clear_bit(ntohs(internal_vlan_id),
3245                                                 rocker_port->vlan_bitmap))
3246                         return 0; /* already removed */
3247
3248         if (adding) {
3249                 err = rocker_port_ctrl_vlan_add(rocker_port, flags,
3250                                                 internal_vlan_id);
3251                 if (err) {
3252                         netdev_err(rocker_port->dev,
3253                                    "Error (%d) port ctrl vlan add\n", err);
3254                         return err;
3255                 }
3256         }
3257
3258         err = rocker_port_vlan_l2_groups(rocker_port, flags,
3259                                          internal_vlan_id, untagged);
3260         if (err) {
3261                 netdev_err(rocker_port->dev,
3262                            "Error (%d) port VLAN l2 groups\n", err);
3263                 return err;
3264         }
3265
3266         err = rocker_port_vlan_flood_group(rocker_port, flags,
3267                                            internal_vlan_id);
3268         if (err) {
3269                 netdev_err(rocker_port->dev,
3270                            "Error (%d) port VLAN l2 flood group\n", err);
3271                 return err;
3272         }
3273
3274         err = rocker_flow_tbl_vlan(rocker_port, flags,
3275                                    in_pport, vlan_id, vlan_id_mask,
3276                                    goto_tbl, untagged, internal_vlan_id);
3277         if (err)
3278                 netdev_err(rocker_port->dev,
3279                            "Error (%d) port VLAN table\n", err);
3280
3281         return err;
3282 }
3283
3284 static int rocker_port_ig_tbl(struct rocker_port *rocker_port, int flags)
3285 {
3286         enum rocker_of_dpa_table_id goto_tbl;
3287         u32 in_pport;
3288         u32 in_pport_mask;
3289         int err;
3290
3291         /* Normal Ethernet Frames.  Matches pkts from any local physical
3292          * ports.  Goto VLAN tbl.
3293          */
3294
3295         in_pport = 0;
3296         in_pport_mask = 0xffff0000;
3297         goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
3298
3299         err = rocker_flow_tbl_ig_port(rocker_port, flags,
3300                                       in_pport, in_pport_mask,
3301                                       goto_tbl);
3302         if (err)
3303                 netdev_err(rocker_port->dev,
3304                            "Error (%d) ingress port table entry\n", err);
3305
3306         return err;
3307 }
3308
3309 struct rocker_fdb_learn_work {
3310         struct work_struct work;
3311         struct net_device *dev;
3312         int flags;
3313         u8 addr[ETH_ALEN];
3314         u16 vid;
3315 };
3316
3317 static void rocker_port_fdb_learn_work(struct work_struct *work)
3318 {
3319         struct rocker_fdb_learn_work *lw =
3320                 container_of(work, struct rocker_fdb_learn_work, work);
3321         bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
3322         bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
3323         struct netdev_switch_notifier_fdb_info info;
3324
3325         info.addr = lw->addr;
3326         info.vid = lw->vid;
3327
3328         if (learned && removing)
3329                 call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_DEL,
3330                                              lw->dev, &info.info);
3331         else if (learned && !removing)
3332                 call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_ADD,
3333                                              lw->dev, &info.info);
3334
3335         kfree(work);
3336 }
3337
3338 static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
3339                                  int flags, const u8 *addr, __be16 vlan_id)
3340 {
3341         struct rocker_fdb_learn_work *lw;
3342         enum rocker_of_dpa_table_id goto_tbl =
3343                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3344         u32 out_pport = rocker_port->pport;
3345         u32 tunnel_id = 0;
3346         u32 group_id = ROCKER_GROUP_NONE;
3347         bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
3348         bool copy_to_cpu = false;
3349         int err;
3350
3351         if (rocker_port_is_bridged(rocker_port))
3352                 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3353
3354         if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3355                 err = rocker_flow_tbl_bridge(rocker_port, flags, addr, NULL,
3356                                              vlan_id, tunnel_id, goto_tbl,
3357                                              group_id, copy_to_cpu);
3358                 if (err)
3359                         return err;
3360         }
3361
3362         if (!syncing)
3363                 return 0;
3364
3365         if (!rocker_port_is_bridged(rocker_port))
3366                 return 0;
3367
3368         lw = kmalloc(sizeof(*lw), rocker_op_flags_gfp(flags));
3369         if (!lw)
3370                 return -ENOMEM;
3371
3372         INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3373
3374         lw->dev = rocker_port->dev;
3375         lw->flags = flags;
3376         ether_addr_copy(lw->addr, addr);
3377         lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3378
3379         schedule_work(&lw->work);
3380
3381         return 0;
3382 }
3383
3384 static struct rocker_fdb_tbl_entry *
3385 rocker_fdb_tbl_find(struct rocker *rocker, struct rocker_fdb_tbl_entry *match)
3386 {
3387         struct rocker_fdb_tbl_entry *found;
3388
3389         hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3390                 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3391                         return found;
3392
3393         return NULL;
3394 }
3395
3396 static int rocker_port_fdb(struct rocker_port *rocker_port,
3397                            const unsigned char *addr,
3398                            __be16 vlan_id, int flags)
3399 {
3400         struct rocker *rocker = rocker_port->rocker;
3401         struct rocker_fdb_tbl_entry *fdb;
3402         struct rocker_fdb_tbl_entry *found;
3403         bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3404         unsigned long lock_flags;
3405
3406         fdb = kzalloc(sizeof(*fdb), rocker_op_flags_gfp(flags));
3407         if (!fdb)
3408                 return -ENOMEM;
3409
3410         fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
3411         fdb->key.pport = rocker_port->pport;
3412         ether_addr_copy(fdb->key.addr, addr);
3413         fdb->key.vlan_id = vlan_id;
3414         fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3415
3416         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3417
3418         found = rocker_fdb_tbl_find(rocker, fdb);
3419
3420         if (removing && found) {
3421                 kfree(fdb);
3422                 hash_del(&found->entry);
3423         } else if (!removing && !found) {
3424                 hash_add(rocker->fdb_tbl, &fdb->entry, fdb->key_crc32);
3425         }
3426
3427         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3428
3429         /* Check if adding and already exists, or removing and can't find */
3430         if (!found != !removing) {
3431                 kfree(fdb);
3432                 if (!found && removing)
3433                         return 0;
3434                 /* Refreshing existing to update aging timers */
3435                 flags |= ROCKER_OP_FLAG_REFRESH;
3436         }
3437
3438         return rocker_port_fdb_learn(rocker_port, flags, addr, vlan_id);
3439 }
3440
3441 static int rocker_port_fdb_flush(struct rocker_port *rocker_port)
3442 {
3443         struct rocker *rocker = rocker_port->rocker;
3444         struct rocker_fdb_tbl_entry *found;
3445         unsigned long lock_flags;
3446         int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
3447         struct hlist_node *tmp;
3448         int bkt;
3449         int err = 0;
3450
3451         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3452             rocker_port->stp_state == BR_STATE_FORWARDING)
3453                 return 0;
3454
3455         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3456
3457         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3458                 if (found->key.pport != rocker_port->pport)
3459                         continue;
3460                 if (!found->learned)
3461                         continue;
3462                 err = rocker_port_fdb_learn(rocker_port, flags,
3463                                             found->key.addr,
3464                                             found->key.vlan_id);
3465                 if (err)
3466                         goto err_out;
3467                 hash_del(&found->entry);
3468         }
3469
3470 err_out:
3471         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3472
3473         return err;
3474 }
3475
3476 static int rocker_port_router_mac(struct rocker_port *rocker_port,
3477                                   int flags, __be16 vlan_id)
3478 {
3479         u32 in_pport_mask = 0xffffffff;
3480         __be16 eth_type;
3481         const u8 *dst_mac_mask = ff_mac;
3482         __be16 vlan_id_mask = htons(0xffff);
3483         bool copy_to_cpu = false;
3484         int err;
3485
3486         if (ntohs(vlan_id) == 0)
3487                 vlan_id = rocker_port->internal_vlan_id;
3488
3489         eth_type = htons(ETH_P_IP);
3490         err = rocker_flow_tbl_term_mac(rocker_port,
3491                                        rocker_port->pport, in_pport_mask,
3492                                        eth_type, rocker_port->dev->dev_addr,
3493                                        dst_mac_mask, vlan_id, vlan_id_mask,
3494                                        copy_to_cpu, flags);
3495         if (err)
3496                 return err;
3497
3498         eth_type = htons(ETH_P_IPV6);
3499         err = rocker_flow_tbl_term_mac(rocker_port,
3500                                        rocker_port->pport, in_pport_mask,
3501                                        eth_type, rocker_port->dev->dev_addr,
3502                                        dst_mac_mask, vlan_id, vlan_id_mask,
3503                                        copy_to_cpu, flags);
3504
3505         return err;
3506 }
3507
3508 static int rocker_port_fwding(struct rocker_port *rocker_port)
3509 {
3510         bool pop_vlan;
3511         u32 out_pport;
3512         __be16 vlan_id;
3513         u16 vid;
3514         int flags = ROCKER_OP_FLAG_NOWAIT;
3515         int err;
3516
3517         /* Port will be forwarding-enabled if its STP state is LEARNING
3518          * or FORWARDING.  Traffic from CPU can still egress, regardless of
3519          * port STP state.  Use L2 interface group on port VLANs as a way
3520          * to toggle port forwarding: if forwarding is disabled, L2
3521          * interface group will not exist.
3522          */
3523
3524         if (rocker_port->stp_state != BR_STATE_LEARNING &&
3525             rocker_port->stp_state != BR_STATE_FORWARDING)
3526                 flags |= ROCKER_OP_FLAG_REMOVE;
3527
3528         out_pport = rocker_port->pport;
3529         for (vid = 1; vid < VLAN_N_VID; vid++) {
3530                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3531                         continue;
3532                 vlan_id = htons(vid);
3533                 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3534                 err = rocker_group_l2_interface(rocker_port, flags,
3535                                                 vlan_id, out_pport,
3536                                                 pop_vlan);
3537                 if (err) {
3538                         netdev_err(rocker_port->dev,
3539                                    "Error (%d) port VLAN l2 group for pport %d\n",
3540                                    err, out_pport);
3541                         return err;
3542                 }
3543         }
3544
3545         return 0;
3546 }
3547
3548 static int rocker_port_stp_update(struct rocker_port *rocker_port, u8 state)
3549 {
3550         bool want[ROCKER_CTRL_MAX] = { 0, };
3551         int flags;
3552         int err;
3553         int i;
3554
3555         if (rocker_port->stp_state == state)
3556                 return 0;
3557
3558         rocker_port->stp_state = state;
3559
3560         switch (state) {
3561         case BR_STATE_DISABLED:
3562                 /* port is completely disabled */
3563                 break;
3564         case BR_STATE_LISTENING:
3565         case BR_STATE_BLOCKING:
3566                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3567                 break;
3568         case BR_STATE_LEARNING:
3569         case BR_STATE_FORWARDING:
3570                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3571                 want[ROCKER_CTRL_IPV4_MCAST] = true;
3572                 want[ROCKER_CTRL_IPV6_MCAST] = true;
3573                 if (rocker_port_is_bridged(rocker_port))
3574                         want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3575                 else
3576                         want[ROCKER_CTRL_LOCAL_ARP] = true;
3577                 break;
3578         }
3579
3580         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3581                 if (want[i] != rocker_port->ctrls[i]) {
3582                         flags = ROCKER_OP_FLAG_NOWAIT |
3583                                 (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3584                         err = rocker_port_ctrl(rocker_port, flags,
3585                                                &rocker_ctrls[i]);
3586                         if (err)
3587                                 return err;
3588                         rocker_port->ctrls[i] = want[i];
3589                 }
3590         }
3591
3592         err = rocker_port_fdb_flush(rocker_port);
3593         if (err)
3594                 return err;
3595
3596         return rocker_port_fwding(rocker_port);
3597 }
3598
3599 static int rocker_port_fwd_enable(struct rocker_port *rocker_port)
3600 {
3601         if (rocker_port_is_bridged(rocker_port))
3602                 /* bridge STP will enable port */
3603                 return 0;
3604
3605         /* port is not bridged, so simulate going to FORWARDING state */
3606         return rocker_port_stp_update(rocker_port, BR_STATE_FORWARDING);
3607 }
3608
3609 static int rocker_port_fwd_disable(struct rocker_port *rocker_port)
3610 {
3611         if (rocker_port_is_bridged(rocker_port))
3612                 /* bridge STP will disable port */
3613                 return 0;
3614
3615         /* port is not bridged, so simulate going to DISABLED state */
3616         return rocker_port_stp_update(rocker_port, BR_STATE_DISABLED);
3617 }
3618
3619 static struct rocker_internal_vlan_tbl_entry *
3620 rocker_internal_vlan_tbl_find(struct rocker *rocker, int ifindex)
3621 {
3622         struct rocker_internal_vlan_tbl_entry *found;
3623
3624         hash_for_each_possible(rocker->internal_vlan_tbl, found,
3625                                entry, ifindex) {
3626                 if (found->ifindex == ifindex)
3627                         return found;
3628         }
3629
3630         return NULL;
3631 }
3632
3633 static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
3634                                                int ifindex)
3635 {
3636         struct rocker *rocker = rocker_port->rocker;
3637         struct rocker_internal_vlan_tbl_entry *entry;
3638         struct rocker_internal_vlan_tbl_entry *found;
3639         unsigned long lock_flags;
3640         int i;
3641
3642         entry = kzalloc(sizeof(*entry), GFP_KERNEL);
3643         if (!entry)
3644                 return 0;
3645
3646         entry->ifindex = ifindex;
3647
3648         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3649
3650         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3651         if (found) {
3652                 kfree(entry);
3653                 goto found;
3654         }
3655
3656         found = entry;
3657         hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
3658
3659         for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
3660                 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
3661                         continue;
3662                 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
3663                 goto found;
3664         }
3665
3666         netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
3667
3668 found:
3669         found->ref_count++;
3670         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3671
3672         return found->vlan_id;
3673 }
3674
3675 static void rocker_port_internal_vlan_id_put(struct rocker_port *rocker_port,
3676                                              int ifindex)
3677 {
3678         struct rocker *rocker = rocker_port->rocker;
3679         struct rocker_internal_vlan_tbl_entry *found;
3680         unsigned long lock_flags;
3681         unsigned long bit;
3682
3683         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3684
3685         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3686         if (!found) {
3687                 netdev_err(rocker_port->dev,
3688                            "ifindex (%d) not found in internal VLAN tbl\n",
3689                            ifindex);
3690                 goto not_found;
3691         }
3692
3693         if (--found->ref_count <= 0) {
3694                 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
3695                 clear_bit(bit, rocker->internal_vlan_bitmap);
3696                 hash_del(&found->entry);
3697                 kfree(found);
3698         }
3699
3700 not_found:
3701         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3702 }
3703
3704 static int rocker_port_fib_ipv4(struct rocker_port *rocker_port, __be32 dst,
3705                                 int dst_len, struct fib_info *fi, u32 tb_id,
3706                                 int flags)
3707 {
3708         struct fib_nh *nh;
3709         __be16 eth_type = htons(ETH_P_IP);
3710         __be32 dst_mask = inet_make_mask(dst_len);
3711         __be16 internal_vlan_id = rocker_port->internal_vlan_id;
3712         u32 priority = fi->fib_priority;
3713         enum rocker_of_dpa_table_id goto_tbl =
3714                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3715         u32 group_id;
3716         bool nh_on_port;
3717         bool has_gw;
3718         u32 index;
3719         int err;
3720
3721         /* XXX support ECMP */
3722
3723         nh = fi->fib_nh;
3724         nh_on_port = (fi->fib_dev == rocker_port->dev);
3725         has_gw = !!nh->nh_gw;
3726
3727         if (has_gw && nh_on_port) {
3728                 err = rocker_port_ipv4_nh(rocker_port, flags,
3729                                           nh->nh_gw, &index);
3730                 if (err)
3731                         return err;
3732
3733                 group_id = ROCKER_GROUP_L3_UNICAST(index);
3734         } else {
3735                 /* Send to CPU for processing */
3736                 group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
3737         }
3738
3739         err = rocker_flow_tbl_ucast4_routing(rocker_port, eth_type, dst,
3740                                              dst_mask, priority, goto_tbl,
3741                                              group_id, flags);
3742         if (err)
3743                 netdev_err(rocker_port->dev, "Error (%d) IPv4 route %pI4\n",
3744                            err, &dst);
3745
3746         return err;
3747 }
3748
3749 /*****************
3750  * Net device ops
3751  *****************/
3752
3753 static int rocker_port_open(struct net_device *dev)
3754 {
3755         struct rocker_port *rocker_port = netdev_priv(dev);
3756         int err;
3757
3758         err = rocker_port_dma_rings_init(rocker_port);
3759         if (err)
3760                 return err;
3761
3762         err = request_irq(rocker_msix_tx_vector(rocker_port),
3763                           rocker_tx_irq_handler, 0,
3764                           rocker_driver_name, rocker_port);
3765         if (err) {
3766                 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
3767                 goto err_request_tx_irq;
3768         }
3769
3770         err = request_irq(rocker_msix_rx_vector(rocker_port),
3771                           rocker_rx_irq_handler, 0,
3772                           rocker_driver_name, rocker_port);
3773         if (err) {
3774                 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
3775                 goto err_request_rx_irq;
3776         }
3777
3778         err = rocker_port_fwd_enable(rocker_port);
3779         if (err)
3780                 goto err_fwd_enable;
3781
3782         napi_enable(&rocker_port->napi_tx);
3783         napi_enable(&rocker_port->napi_rx);
3784         rocker_port_set_enable(rocker_port, true);
3785         netif_start_queue(dev);
3786         return 0;
3787
3788 err_fwd_enable:
3789         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
3790 err_request_rx_irq:
3791         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3792 err_request_tx_irq:
3793         rocker_port_dma_rings_fini(rocker_port);
3794         return err;
3795 }
3796
3797 static int rocker_port_stop(struct net_device *dev)
3798 {
3799         struct rocker_port *rocker_port = netdev_priv(dev);
3800
3801         netif_stop_queue(dev);
3802         rocker_port_set_enable(rocker_port, false);
3803         napi_disable(&rocker_port->napi_rx);
3804         napi_disable(&rocker_port->napi_tx);
3805         rocker_port_fwd_disable(rocker_port);
3806         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
3807         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3808         rocker_port_dma_rings_fini(rocker_port);
3809
3810         return 0;
3811 }
3812
3813 static void rocker_tx_desc_frags_unmap(struct rocker_port *rocker_port,
3814                                        struct rocker_desc_info *desc_info)
3815 {
3816         struct rocker *rocker = rocker_port->rocker;
3817         struct pci_dev *pdev = rocker->pdev;
3818         struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
3819         struct rocker_tlv *attr;
3820         int rem;
3821
3822         rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
3823         if (!attrs[ROCKER_TLV_TX_FRAGS])
3824                 return;
3825         rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
3826                 struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
3827                 dma_addr_t dma_handle;
3828                 size_t len;
3829
3830                 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
3831                         continue;
3832                 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
3833                                         attr);
3834                 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
3835                     !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
3836                         continue;
3837                 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
3838                 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
3839                 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
3840         }
3841 }
3842
3843 static int rocker_tx_desc_frag_map_put(struct rocker_port *rocker_port,
3844                                        struct rocker_desc_info *desc_info,
3845                                        char *buf, size_t buf_len)
3846 {
3847         struct rocker *rocker = rocker_port->rocker;
3848         struct pci_dev *pdev = rocker->pdev;
3849         dma_addr_t dma_handle;
3850         struct rocker_tlv *frag;
3851
3852         dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
3853         if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
3854                 if (net_ratelimit())
3855                         netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
3856                 return -EIO;
3857         }
3858         frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
3859         if (!frag)
3860                 goto unmap_frag;
3861         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
3862                                dma_handle))
3863                 goto nest_cancel;
3864         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
3865                                buf_len))
3866                 goto nest_cancel;
3867         rocker_tlv_nest_end(desc_info, frag);
3868         return 0;
3869
3870 nest_cancel:
3871         rocker_tlv_nest_cancel(desc_info, frag);
3872 unmap_frag:
3873         pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
3874         return -EMSGSIZE;
3875 }
3876
3877 static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
3878 {
3879         struct rocker_port *rocker_port = netdev_priv(dev);
3880         struct rocker *rocker = rocker_port->rocker;
3881         struct rocker_desc_info *desc_info;
3882         struct rocker_tlv *frags;
3883         int i;
3884         int err;
3885
3886         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
3887         if (unlikely(!desc_info)) {
3888                 if (net_ratelimit())
3889                         netdev_err(dev, "tx ring full when queue awake\n");
3890                 return NETDEV_TX_BUSY;
3891         }
3892
3893         rocker_desc_cookie_ptr_set(desc_info, skb);
3894
3895         frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
3896         if (!frags)
3897                 goto out;
3898         err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
3899                                           skb->data, skb_headlen(skb));
3900         if (err)
3901                 goto nest_cancel;
3902         if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX)
3903                 goto nest_cancel;
3904
3905         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3906                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
3907
3908                 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
3909                                                   skb_frag_address(frag),
3910                                                   skb_frag_size(frag));
3911                 if (err)
3912                         goto unmap_frags;
3913         }
3914         rocker_tlv_nest_end(desc_info, frags);
3915
3916         rocker_desc_gen_clear(desc_info);
3917         rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
3918
3919         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
3920         if (!desc_info)
3921                 netif_stop_queue(dev);
3922
3923         return NETDEV_TX_OK;
3924
3925 unmap_frags:
3926         rocker_tx_desc_frags_unmap(rocker_port, desc_info);
3927 nest_cancel:
3928         rocker_tlv_nest_cancel(desc_info, frags);
3929 out:
3930         dev_kfree_skb(skb);
3931         dev->stats.tx_dropped++;
3932
3933         return NETDEV_TX_OK;
3934 }
3935
3936 static int rocker_port_set_mac_address(struct net_device *dev, void *p)
3937 {
3938         struct sockaddr *addr = p;
3939         struct rocker_port *rocker_port = netdev_priv(dev);
3940         int err;
3941
3942         if (!is_valid_ether_addr(addr->sa_data))
3943                 return -EADDRNOTAVAIL;
3944
3945         err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
3946         if (err)
3947                 return err;
3948         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
3949         return 0;
3950 }
3951
3952 static int rocker_port_vlan_rx_add_vid(struct net_device *dev,
3953                                        __be16 proto, u16 vid)
3954 {
3955         struct rocker_port *rocker_port = netdev_priv(dev);
3956         int err;
3957
3958         err = rocker_port_vlan(rocker_port, 0, vid);
3959         if (err)
3960                 return err;
3961
3962         return rocker_port_router_mac(rocker_port, 0, htons(vid));
3963 }
3964
3965 static int rocker_port_vlan_rx_kill_vid(struct net_device *dev,
3966                                         __be16 proto, u16 vid)
3967 {
3968         struct rocker_port *rocker_port = netdev_priv(dev);
3969         int err;
3970
3971         err = rocker_port_router_mac(rocker_port, ROCKER_OP_FLAG_REMOVE,
3972                                      htons(vid));
3973         if (err)
3974                 return err;
3975
3976         return rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, vid);
3977 }
3978
3979 static int rocker_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
3980                                struct net_device *dev,
3981                                const unsigned char *addr, u16 vid,
3982                                u16 nlm_flags)
3983 {
3984         struct rocker_port *rocker_port = netdev_priv(dev);
3985         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
3986         int flags = 0;
3987
3988         if (!rocker_port_is_bridged(rocker_port))
3989                 return -EINVAL;
3990
3991         return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
3992 }
3993
3994 static int rocker_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
3995                                struct net_device *dev,
3996                                const unsigned char *addr, u16 vid)
3997 {
3998         struct rocker_port *rocker_port = netdev_priv(dev);
3999         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
4000         int flags = ROCKER_OP_FLAG_REMOVE;
4001
4002         if (!rocker_port_is_bridged(rocker_port))
4003                 return -EINVAL;
4004
4005         return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
4006 }
4007
4008 static int rocker_fdb_fill_info(struct sk_buff *skb,
4009                                 struct rocker_port *rocker_port,
4010                                 const unsigned char *addr, u16 vid,
4011                                 u32 portid, u32 seq, int type,
4012                                 unsigned int flags)
4013 {
4014         struct nlmsghdr *nlh;
4015         struct ndmsg *ndm;
4016
4017         nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags);
4018         if (!nlh)
4019                 return -EMSGSIZE;
4020
4021         ndm = nlmsg_data(nlh);
4022         ndm->ndm_family  = AF_BRIDGE;
4023         ndm->ndm_pad1    = 0;
4024         ndm->ndm_pad2    = 0;
4025         ndm->ndm_flags   = NTF_SELF;
4026         ndm->ndm_type    = 0;
4027         ndm->ndm_ifindex = rocker_port->dev->ifindex;
4028         ndm->ndm_state   = NUD_REACHABLE;
4029
4030         if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
4031                 goto nla_put_failure;
4032
4033         if (vid && nla_put_u16(skb, NDA_VLAN, vid))
4034                 goto nla_put_failure;
4035
4036         nlmsg_end(skb, nlh);
4037         return 0;
4038
4039 nla_put_failure:
4040         nlmsg_cancel(skb, nlh);
4041         return -EMSGSIZE;
4042 }
4043
4044 static int rocker_port_fdb_dump(struct sk_buff *skb,
4045                                 struct netlink_callback *cb,
4046                                 struct net_device *dev,
4047                                 struct net_device *filter_dev,
4048                                 int idx)
4049 {
4050         struct rocker_port *rocker_port = netdev_priv(dev);
4051         struct rocker *rocker = rocker_port->rocker;
4052         struct rocker_fdb_tbl_entry *found;
4053         struct hlist_node *tmp;
4054         int bkt;
4055         unsigned long lock_flags;
4056         const unsigned char *addr;
4057         u16 vid;
4058         int err;
4059
4060         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
4061         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
4062                 if (found->key.pport != rocker_port->pport)
4063                         continue;
4064                 if (idx < cb->args[0])
4065                         goto skip;
4066                 addr = found->key.addr;
4067                 vid = rocker_port_vlan_to_vid(rocker_port, found->key.vlan_id);
4068                 err = rocker_fdb_fill_info(skb, rocker_port, addr, vid,
4069                                            NETLINK_CB(cb->skb).portid,
4070                                            cb->nlh->nlmsg_seq,
4071                                            RTM_NEWNEIGH, NLM_F_MULTI);
4072                 if (err < 0)
4073                         break;
4074 skip:
4075                 ++idx;
4076         }
4077         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
4078         return idx;
4079 }
4080
4081 static int rocker_port_bridge_setlink(struct net_device *dev,
4082                                       struct nlmsghdr *nlh, u16 flags)
4083 {
4084         struct rocker_port *rocker_port = netdev_priv(dev);
4085         struct nlattr *protinfo;
4086         struct nlattr *attr;
4087         int err;
4088
4089         protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg),
4090                                    IFLA_PROTINFO);
4091         if (protinfo) {
4092                 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING);
4093                 if (attr) {
4094                         if (nla_len(attr) < sizeof(u8))
4095                                 return -EINVAL;
4096
4097                         if (nla_get_u8(attr))
4098                                 rocker_port->brport_flags |= BR_LEARNING;
4099                         else
4100                                 rocker_port->brport_flags &= ~BR_LEARNING;
4101                         err = rocker_port_set_learning(rocker_port);
4102                         if (err)
4103                                 return err;
4104                 }
4105                 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING_SYNC);
4106                 if (attr) {
4107                         if (nla_len(attr) < sizeof(u8))
4108                                 return -EINVAL;
4109
4110                         if (nla_get_u8(attr))
4111                                 rocker_port->brport_flags |= BR_LEARNING_SYNC;
4112                         else
4113                                 rocker_port->brport_flags &= ~BR_LEARNING_SYNC;
4114                 }
4115         }
4116
4117         return 0;
4118 }
4119
4120 static int rocker_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
4121                                       struct net_device *dev,
4122                                       u32 filter_mask)
4123 {
4124         struct rocker_port *rocker_port = netdev_priv(dev);
4125         u16 mode = BRIDGE_MODE_UNDEF;
4126         u32 mask = BR_LEARNING | BR_LEARNING_SYNC;
4127
4128         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode,
4129                                        rocker_port->brport_flags, mask);
4130 }
4131
4132 static int rocker_port_switch_parent_id_get(struct net_device *dev,
4133                                             struct netdev_phys_item_id *psid)
4134 {
4135         struct rocker_port *rocker_port = netdev_priv(dev);
4136         struct rocker *rocker = rocker_port->rocker;
4137
4138         psid->id_len = sizeof(rocker->hw.id);
4139         memcpy(&psid->id, &rocker->hw.id, psid->id_len);
4140         return 0;
4141 }
4142
4143 static int rocker_port_switch_port_stp_update(struct net_device *dev, u8 state)
4144 {
4145         struct rocker_port *rocker_port = netdev_priv(dev);
4146
4147         return rocker_port_stp_update(rocker_port, state);
4148 }
4149
4150 static int rocker_port_switch_fib_ipv4_add(struct net_device *dev,
4151                                            __be32 dst, int dst_len,
4152                                            struct fib_info *fi,
4153                                            u8 tos, u8 type, u32 tb_id)
4154 {
4155         struct rocker_port *rocker_port = netdev_priv(dev);
4156         int flags = 0;
4157
4158         return rocker_port_fib_ipv4(rocker_port, dst, dst_len,
4159                                     fi, tb_id, flags);
4160 }
4161
4162 static int rocker_port_switch_fib_ipv4_del(struct net_device *dev,
4163                                            __be32 dst, int dst_len,
4164                                            struct fib_info *fi,
4165                                            u8 tos, u8 type, u32 tb_id)
4166 {
4167         struct rocker_port *rocker_port = netdev_priv(dev);
4168         int flags = ROCKER_OP_FLAG_REMOVE;
4169
4170         return rocker_port_fib_ipv4(rocker_port, dst, dst_len,
4171                                     fi, tb_id, flags);
4172 }
4173
4174 static const struct net_device_ops rocker_port_netdev_ops = {
4175         .ndo_open                       = rocker_port_open,
4176         .ndo_stop                       = rocker_port_stop,
4177         .ndo_start_xmit                 = rocker_port_xmit,
4178         .ndo_set_mac_address            = rocker_port_set_mac_address,
4179         .ndo_vlan_rx_add_vid            = rocker_port_vlan_rx_add_vid,
4180         .ndo_vlan_rx_kill_vid           = rocker_port_vlan_rx_kill_vid,
4181         .ndo_fdb_add                    = rocker_port_fdb_add,
4182         .ndo_fdb_del                    = rocker_port_fdb_del,
4183         .ndo_fdb_dump                   = rocker_port_fdb_dump,
4184         .ndo_bridge_setlink             = rocker_port_bridge_setlink,
4185         .ndo_bridge_getlink             = rocker_port_bridge_getlink,
4186         .ndo_switch_parent_id_get       = rocker_port_switch_parent_id_get,
4187         .ndo_switch_port_stp_update     = rocker_port_switch_port_stp_update,
4188         .ndo_switch_fib_ipv4_add        = rocker_port_switch_fib_ipv4_add,
4189         .ndo_switch_fib_ipv4_del        = rocker_port_switch_fib_ipv4_del,
4190 };
4191
4192 /********************
4193  * ethtool interface
4194  ********************/
4195
4196 static int rocker_port_get_settings(struct net_device *dev,
4197                                     struct ethtool_cmd *ecmd)
4198 {
4199         struct rocker_port *rocker_port = netdev_priv(dev);
4200
4201         return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
4202 }
4203
4204 static int rocker_port_set_settings(struct net_device *dev,
4205                                     struct ethtool_cmd *ecmd)
4206 {
4207         struct rocker_port *rocker_port = netdev_priv(dev);
4208
4209         return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
4210 }
4211
4212 static void rocker_port_get_drvinfo(struct net_device *dev,
4213                                     struct ethtool_drvinfo *drvinfo)
4214 {
4215         strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
4216         strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
4217 }
4218
4219 static struct rocker_port_stats {
4220         char str[ETH_GSTRING_LEN];
4221         int type;
4222 } rocker_port_stats[] = {
4223         { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS,    },
4224         { "rx_bytes",   ROCKER_TLV_CMD_PORT_STATS_RX_BYTES,   },
4225         { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
4226         { "rx_errors",  ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS,  },
4227
4228         { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS,    },
4229         { "tx_bytes",   ROCKER_TLV_CMD_PORT_STATS_TX_BYTES,   },
4230         { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
4231         { "tx_errors",  ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS,  },
4232 };
4233
4234 #define ROCKER_PORT_STATS_LEN  ARRAY_SIZE(rocker_port_stats)
4235
4236 static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
4237                                     u8 *data)
4238 {
4239         u8 *p = data;
4240         int i;
4241
4242         switch (stringset) {
4243         case ETH_SS_STATS:
4244                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4245                         memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
4246                         p += ETH_GSTRING_LEN;
4247                 }
4248                 break;
4249         }
4250 }
4251
4252 static int
4253 rocker_cmd_get_port_stats_prep(struct rocker *rocker,
4254                                struct rocker_port *rocker_port,
4255                                struct rocker_desc_info *desc_info,
4256                                void *priv)
4257 {
4258         struct rocker_tlv *cmd_stats;
4259
4260         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
4261                                ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
4262                 return -EMSGSIZE;
4263
4264         cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
4265         if (!cmd_stats)
4266                 return -EMSGSIZE;
4267
4268         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT,
4269                                rocker_port->pport))
4270                 return -EMSGSIZE;
4271
4272         rocker_tlv_nest_end(desc_info, cmd_stats);
4273
4274         return 0;
4275 }
4276
4277 static int
4278 rocker_cmd_get_port_stats_ethtool_proc(struct rocker *rocker,
4279                                        struct rocker_port *rocker_port,
4280                                        struct rocker_desc_info *desc_info,
4281                                        void *priv)
4282 {
4283         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
4284         struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
4285         struct rocker_tlv *pattr;
4286         u32 pport;
4287         u64 *data = priv;
4288         int i;
4289
4290         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
4291
4292         if (!attrs[ROCKER_TLV_CMD_INFO])
4293                 return -EIO;
4294
4295         rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
4296                                 attrs[ROCKER_TLV_CMD_INFO]);
4297
4298         if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT])
4299                 return -EIO;
4300
4301         pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]);
4302         if (pport != rocker_port->pport)
4303                 return -EIO;
4304
4305         for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4306                 pattr = stats_attrs[rocker_port_stats[i].type];
4307                 if (!pattr)
4308                         continue;
4309
4310                 data[i] = rocker_tlv_get_u64(pattr);
4311         }
4312
4313         return 0;
4314 }
4315
4316 static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
4317                                              void *priv)
4318 {
4319         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
4320                                rocker_cmd_get_port_stats_prep, NULL,
4321                                rocker_cmd_get_port_stats_ethtool_proc,
4322                                priv, false);
4323 }
4324
4325 static void rocker_port_get_stats(struct net_device *dev,
4326                                   struct ethtool_stats *stats, u64 *data)
4327 {
4328         struct rocker_port *rocker_port = netdev_priv(dev);
4329
4330         if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
4331                 int i;
4332
4333                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
4334                         data[i] = 0;
4335         }
4336
4337         return;
4338 }
4339
4340 static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
4341 {
4342         switch (sset) {
4343         case ETH_SS_STATS:
4344                 return ROCKER_PORT_STATS_LEN;
4345         default:
4346                 return -EOPNOTSUPP;
4347         }
4348 }
4349
4350 static const struct ethtool_ops rocker_port_ethtool_ops = {
4351         .get_settings           = rocker_port_get_settings,
4352         .set_settings           = rocker_port_set_settings,
4353         .get_drvinfo            = rocker_port_get_drvinfo,
4354         .get_link               = ethtool_op_get_link,
4355         .get_strings            = rocker_port_get_strings,
4356         .get_ethtool_stats      = rocker_port_get_stats,
4357         .get_sset_count         = rocker_port_get_sset_count,
4358 };
4359
4360 /*****************
4361  * NAPI interface
4362  *****************/
4363
4364 static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
4365 {
4366         return container_of(napi, struct rocker_port, napi_tx);
4367 }
4368
4369 static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
4370 {
4371         struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
4372         struct rocker *rocker = rocker_port->rocker;
4373         struct rocker_desc_info *desc_info;
4374         u32 credits = 0;
4375         int err;
4376
4377         /* Cleanup tx descriptors */
4378         while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
4379                 struct sk_buff *skb;
4380
4381                 err = rocker_desc_err(desc_info);
4382                 if (err && net_ratelimit())
4383                         netdev_err(rocker_port->dev, "tx desc received with err %d\n",
4384                                    err);
4385                 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4386
4387                 skb = rocker_desc_cookie_ptr_get(desc_info);
4388                 if (err == 0) {
4389                         rocker_port->dev->stats.tx_packets++;
4390                         rocker_port->dev->stats.tx_bytes += skb->len;
4391                 } else
4392                         rocker_port->dev->stats.tx_errors++;
4393
4394                 dev_kfree_skb_any(skb);
4395                 credits++;
4396         }
4397
4398         if (credits && netif_queue_stopped(rocker_port->dev))
4399                 netif_wake_queue(rocker_port->dev);
4400
4401         napi_complete(napi);
4402         rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
4403
4404         return 0;
4405 }
4406
4407 static int rocker_port_rx_proc(struct rocker *rocker,
4408                                struct rocker_port *rocker_port,
4409                                struct rocker_desc_info *desc_info)
4410 {
4411         struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
4412         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
4413         size_t rx_len;
4414
4415         if (!skb)
4416                 return -ENOENT;
4417
4418         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
4419         if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
4420                 return -EINVAL;
4421
4422         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
4423
4424         rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
4425         skb_put(skb, rx_len);
4426         skb->protocol = eth_type_trans(skb, rocker_port->dev);
4427
4428         rocker_port->dev->stats.rx_packets++;
4429         rocker_port->dev->stats.rx_bytes += skb->len;
4430
4431         netif_receive_skb(skb);
4432
4433         return rocker_dma_rx_ring_skb_alloc(rocker, rocker_port, desc_info);
4434 }
4435
4436 static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
4437 {
4438         return container_of(napi, struct rocker_port, napi_rx);
4439 }
4440
4441 static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
4442 {
4443         struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
4444         struct rocker *rocker = rocker_port->rocker;
4445         struct rocker_desc_info *desc_info;
4446         u32 credits = 0;
4447         int err;
4448
4449         /* Process rx descriptors */
4450         while (credits < budget &&
4451                (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
4452                 err = rocker_desc_err(desc_info);
4453                 if (err) {
4454                         if (net_ratelimit())
4455                                 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
4456                                            err);
4457                 } else {
4458                         err = rocker_port_rx_proc(rocker, rocker_port,
4459                                                   desc_info);
4460                         if (err && net_ratelimit())
4461                                 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
4462                                            err);
4463                 }
4464                 if (err)
4465                         rocker_port->dev->stats.rx_errors++;
4466
4467                 rocker_desc_gen_clear(desc_info);
4468                 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
4469                 credits++;
4470         }
4471
4472         if (credits < budget)
4473                 napi_complete(napi);
4474
4475         rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
4476
4477         return credits;
4478 }
4479
4480 /*****************
4481  * PCI driver ops
4482  *****************/
4483
4484 static void rocker_carrier_init(struct rocker_port *rocker_port)
4485 {
4486         struct rocker *rocker = rocker_port->rocker;
4487         u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
4488         bool link_up;
4489
4490         link_up = link_status & (1 << rocker_port->pport);
4491         if (link_up)
4492                 netif_carrier_on(rocker_port->dev);
4493         else
4494                 netif_carrier_off(rocker_port->dev);
4495 }
4496
4497 static void rocker_remove_ports(struct rocker *rocker)
4498 {
4499         struct rocker_port *rocker_port;
4500         int i;
4501
4502         for (i = 0; i < rocker->port_count; i++) {
4503                 rocker_port = rocker->ports[i];
4504                 rocker_port_ig_tbl(rocker_port, ROCKER_OP_FLAG_REMOVE);
4505                 unregister_netdev(rocker_port->dev);
4506         }
4507         kfree(rocker->ports);
4508 }
4509
4510 static void rocker_port_dev_addr_init(struct rocker *rocker,
4511                                       struct rocker_port *rocker_port)
4512 {
4513         struct pci_dev *pdev = rocker->pdev;
4514         int err;
4515
4516         err = rocker_cmd_get_port_settings_macaddr(rocker_port,
4517                                                    rocker_port->dev->dev_addr);
4518         if (err) {
4519                 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
4520                 eth_hw_addr_random(rocker_port->dev);
4521         }
4522 }
4523
4524 static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
4525 {
4526         struct pci_dev *pdev = rocker->pdev;
4527         struct rocker_port *rocker_port;
4528         struct net_device *dev;
4529         int err;
4530
4531         dev = alloc_etherdev(sizeof(struct rocker_port));
4532         if (!dev)
4533                 return -ENOMEM;
4534         rocker_port = netdev_priv(dev);
4535         rocker_port->dev = dev;
4536         rocker_port->rocker = rocker;
4537         rocker_port->port_number = port_number;
4538         rocker_port->pport = port_number + 1;
4539         rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
4540
4541         rocker_port_dev_addr_init(rocker, rocker_port);
4542         dev->netdev_ops = &rocker_port_netdev_ops;
4543         dev->ethtool_ops = &rocker_port_ethtool_ops;
4544         netif_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
4545                        NAPI_POLL_WEIGHT);
4546         netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
4547                        NAPI_POLL_WEIGHT);
4548         rocker_carrier_init(rocker_port);
4549
4550         dev->features |= NETIF_F_NETNS_LOCAL |
4551                          NETIF_F_HW_VLAN_CTAG_FILTER |
4552                          NETIF_F_HW_SWITCH_OFFLOAD;
4553
4554         err = register_netdev(dev);
4555         if (err) {
4556                 dev_err(&pdev->dev, "register_netdev failed\n");
4557                 goto err_register_netdev;
4558         }
4559         rocker->ports[port_number] = rocker_port;
4560
4561         rocker_port_set_learning(rocker_port);
4562
4563         rocker_port->internal_vlan_id =
4564                 rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
4565         err = rocker_port_ig_tbl(rocker_port, 0);
4566         if (err) {
4567                 dev_err(&pdev->dev, "install ig port table failed\n");
4568                 goto err_port_ig_tbl;
4569         }
4570
4571         return 0;
4572
4573 err_port_ig_tbl:
4574         unregister_netdev(dev);
4575 err_register_netdev:
4576         free_netdev(dev);
4577         return err;
4578 }
4579
4580 static int rocker_probe_ports(struct rocker *rocker)
4581 {
4582         int i;
4583         size_t alloc_size;
4584         int err;
4585
4586         alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
4587         rocker->ports = kmalloc(alloc_size, GFP_KERNEL);
4588         if (!rocker->ports)
4589                 return -ENOMEM;
4590         for (i = 0; i < rocker->port_count; i++) {
4591                 err = rocker_probe_port(rocker, i);
4592                 if (err)
4593                         goto remove_ports;
4594         }
4595         return 0;
4596
4597 remove_ports:
4598         rocker_remove_ports(rocker);
4599         return err;
4600 }
4601
4602 static int rocker_msix_init(struct rocker *rocker)
4603 {
4604         struct pci_dev *pdev = rocker->pdev;
4605         int msix_entries;
4606         int i;
4607         int err;
4608
4609         msix_entries = pci_msix_vec_count(pdev);
4610         if (msix_entries < 0)
4611                 return msix_entries;
4612
4613         if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
4614                 return -EINVAL;
4615
4616         rocker->msix_entries = kmalloc_array(msix_entries,
4617                                              sizeof(struct msix_entry),
4618                                              GFP_KERNEL);
4619         if (!rocker->msix_entries)
4620                 return -ENOMEM;
4621
4622         for (i = 0; i < msix_entries; i++)
4623                 rocker->msix_entries[i].entry = i;
4624
4625         err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
4626         if (err < 0)
4627                 goto err_enable_msix;
4628
4629         return 0;
4630
4631 err_enable_msix:
4632         kfree(rocker->msix_entries);
4633         return err;
4634 }
4635
4636 static void rocker_msix_fini(struct rocker *rocker)
4637 {
4638         pci_disable_msix(rocker->pdev);
4639         kfree(rocker->msix_entries);
4640 }
4641
4642 static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
4643 {
4644         struct rocker *rocker;
4645         int err;
4646
4647         rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
4648         if (!rocker)
4649                 return -ENOMEM;
4650
4651         err = pci_enable_device(pdev);
4652         if (err) {
4653                 dev_err(&pdev->dev, "pci_enable_device failed\n");
4654                 goto err_pci_enable_device;
4655         }
4656
4657         err = pci_request_regions(pdev, rocker_driver_name);
4658         if (err) {
4659                 dev_err(&pdev->dev, "pci_request_regions failed\n");
4660                 goto err_pci_request_regions;
4661         }
4662
4663         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4664         if (!err) {
4665                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4666                 if (err) {
4667                         dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
4668                         goto err_pci_set_dma_mask;
4669                 }
4670         } else {
4671                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4672                 if (err) {
4673                         dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
4674                         goto err_pci_set_dma_mask;
4675                 }
4676         }
4677
4678         if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
4679                 dev_err(&pdev->dev, "invalid PCI region size\n");
4680                 goto err_pci_resource_len_check;
4681         }
4682
4683         rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
4684                                   pci_resource_len(pdev, 0));
4685         if (!rocker->hw_addr) {
4686                 dev_err(&pdev->dev, "ioremap failed\n");
4687                 err = -EIO;
4688                 goto err_ioremap;
4689         }
4690         pci_set_master(pdev);
4691
4692         rocker->pdev = pdev;
4693         pci_set_drvdata(pdev, rocker);
4694
4695         rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
4696
4697         err = rocker_msix_init(rocker);
4698         if (err) {
4699                 dev_err(&pdev->dev, "MSI-X init failed\n");
4700                 goto err_msix_init;
4701         }
4702
4703         err = rocker_basic_hw_test(rocker);
4704         if (err) {
4705                 dev_err(&pdev->dev, "basic hw test failed\n");
4706                 goto err_basic_hw_test;
4707         }
4708
4709         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
4710
4711         err = rocker_dma_rings_init(rocker);
4712         if (err)
4713                 goto err_dma_rings_init;
4714
4715         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
4716                           rocker_cmd_irq_handler, 0,
4717                           rocker_driver_name, rocker);
4718         if (err) {
4719                 dev_err(&pdev->dev, "cannot assign cmd irq\n");
4720                 goto err_request_cmd_irq;
4721         }
4722
4723         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
4724                           rocker_event_irq_handler, 0,
4725                           rocker_driver_name, rocker);
4726         if (err) {
4727                 dev_err(&pdev->dev, "cannot assign event irq\n");
4728                 goto err_request_event_irq;
4729         }
4730
4731         rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
4732
4733         err = rocker_init_tbls(rocker);
4734         if (err) {
4735                 dev_err(&pdev->dev, "cannot init rocker tables\n");
4736                 goto err_init_tbls;
4737         }
4738
4739         err = rocker_probe_ports(rocker);
4740         if (err) {
4741                 dev_err(&pdev->dev, "failed to probe ports\n");
4742                 goto err_probe_ports;
4743         }
4744
4745         dev_info(&pdev->dev, "Rocker switch with id %016llx\n", rocker->hw.id);
4746
4747         return 0;
4748
4749 err_probe_ports:
4750         rocker_free_tbls(rocker);
4751 err_init_tbls:
4752         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
4753 err_request_event_irq:
4754         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
4755 err_request_cmd_irq:
4756         rocker_dma_rings_fini(rocker);
4757 err_dma_rings_init:
4758 err_basic_hw_test:
4759         rocker_msix_fini(rocker);
4760 err_msix_init:
4761         iounmap(rocker->hw_addr);
4762 err_ioremap:
4763 err_pci_resource_len_check:
4764 err_pci_set_dma_mask:
4765         pci_release_regions(pdev);
4766 err_pci_request_regions:
4767         pci_disable_device(pdev);
4768 err_pci_enable_device:
4769         kfree(rocker);
4770         return err;
4771 }
4772
4773 static void rocker_remove(struct pci_dev *pdev)
4774 {
4775         struct rocker *rocker = pci_get_drvdata(pdev);
4776
4777         rocker_free_tbls(rocker);
4778         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
4779         rocker_remove_ports(rocker);
4780         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
4781         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
4782         rocker_dma_rings_fini(rocker);
4783         rocker_msix_fini(rocker);
4784         iounmap(rocker->hw_addr);
4785         pci_release_regions(rocker->pdev);
4786         pci_disable_device(rocker->pdev);
4787         kfree(rocker);
4788 }
4789
4790 static struct pci_driver rocker_pci_driver = {
4791         .name           = rocker_driver_name,
4792         .id_table       = rocker_pci_id_table,
4793         .probe          = rocker_probe,
4794         .remove         = rocker_remove,
4795 };
4796
4797 /************************************
4798  * Net device notifier event handler
4799  ************************************/
4800
4801 static bool rocker_port_dev_check(struct net_device *dev)
4802 {
4803         return dev->netdev_ops == &rocker_port_netdev_ops;
4804 }
4805
4806 static int rocker_port_bridge_join(struct rocker_port *rocker_port,
4807                                    struct net_device *bridge)
4808 {
4809         int err;
4810
4811         rocker_port_internal_vlan_id_put(rocker_port,
4812                                          rocker_port->dev->ifindex);
4813
4814         rocker_port->bridge_dev = bridge;
4815
4816         /* Use bridge internal VLAN ID for untagged pkts */
4817         err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0);
4818         if (err)
4819                 return err;
4820         rocker_port->internal_vlan_id =
4821                 rocker_port_internal_vlan_id_get(rocker_port,
4822                                                  bridge->ifindex);
4823         return rocker_port_vlan(rocker_port, 0, 0);
4824 }
4825
4826 static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
4827 {
4828         int err;
4829
4830         rocker_port_internal_vlan_id_put(rocker_port,
4831                                          rocker_port->bridge_dev->ifindex);
4832
4833         rocker_port->bridge_dev = NULL;
4834
4835         /* Use port internal VLAN ID for untagged pkts */
4836         err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0);
4837         if (err)
4838                 return err;
4839         rocker_port->internal_vlan_id =
4840                 rocker_port_internal_vlan_id_get(rocker_port,
4841                                                  rocker_port->dev->ifindex);
4842         err = rocker_port_vlan(rocker_port, 0, 0);
4843         if (err)
4844                 return err;
4845
4846         if (rocker_port->dev->flags & IFF_UP)
4847                 err = rocker_port_fwd_enable(rocker_port);
4848
4849         return err;
4850 }
4851
4852 static int rocker_port_master_changed(struct net_device *dev)
4853 {
4854         struct rocker_port *rocker_port = netdev_priv(dev);
4855         struct net_device *master = netdev_master_upper_dev_get(dev);
4856         int err = 0;
4857
4858         if (master && master->rtnl_link_ops &&
4859             !strcmp(master->rtnl_link_ops->kind, "bridge"))
4860                 err = rocker_port_bridge_join(rocker_port, master);
4861         else
4862                 err = rocker_port_bridge_leave(rocker_port);
4863
4864         return err;
4865 }
4866
4867 static int rocker_netdevice_event(struct notifier_block *unused,
4868                                   unsigned long event, void *ptr)
4869 {
4870         struct net_device *dev;
4871         int err;
4872
4873         switch (event) {
4874         case NETDEV_CHANGEUPPER:
4875                 dev = netdev_notifier_info_to_dev(ptr);
4876                 if (!rocker_port_dev_check(dev))
4877                         return NOTIFY_DONE;
4878                 err = rocker_port_master_changed(dev);
4879                 if (err)
4880                         netdev_warn(dev,
4881                                     "failed to reflect master change (err %d)\n",
4882                                     err);
4883                 break;
4884         }
4885
4886         return NOTIFY_DONE;
4887 }
4888
4889 static struct notifier_block rocker_netdevice_nb __read_mostly = {
4890         .notifier_call = rocker_netdevice_event,
4891 };
4892
4893 /************************************
4894  * Net event notifier event handler
4895  ************************************/
4896
4897 static int rocker_neigh_update(struct net_device *dev, struct neighbour *n)
4898 {
4899         struct rocker_port *rocker_port = netdev_priv(dev);
4900         int flags = (n->nud_state & NUD_VALID) ? 0 : ROCKER_OP_FLAG_REMOVE;
4901         __be32 ip_addr = *(__be32 *)n->primary_key;
4902
4903         return rocker_port_ipv4_neigh(rocker_port, flags, ip_addr, n->ha);
4904 }
4905
4906 static int rocker_netevent_event(struct notifier_block *unused,
4907                                  unsigned long event, void *ptr)
4908 {
4909         struct net_device *dev;
4910         struct neighbour *n = ptr;
4911         int err;
4912
4913         switch (event) {
4914         case NETEVENT_NEIGH_UPDATE:
4915                 if (n->tbl != &arp_tbl)
4916                         return NOTIFY_DONE;
4917                 dev = n->dev;
4918                 if (!rocker_port_dev_check(dev))
4919                         return NOTIFY_DONE;
4920                 err = rocker_neigh_update(dev, n);
4921                 if (err)
4922                         netdev_warn(dev,
4923                                     "failed to handle neigh update (err %d)\n",
4924                                     err);
4925                 break;
4926         }
4927
4928         return NOTIFY_DONE;
4929 }
4930
4931 static struct notifier_block rocker_netevent_nb __read_mostly = {
4932         .notifier_call = rocker_netevent_event,
4933 };
4934
4935 /***********************
4936  * Module init and exit
4937  ***********************/
4938
4939 static int __init rocker_module_init(void)
4940 {
4941         int err;
4942
4943         register_netdevice_notifier(&rocker_netdevice_nb);
4944         register_netevent_notifier(&rocker_netevent_nb);
4945         err = pci_register_driver(&rocker_pci_driver);
4946         if (err)
4947                 goto err_pci_register_driver;
4948         return 0;
4949
4950 err_pci_register_driver:
4951         unregister_netdevice_notifier(&rocker_netevent_nb);
4952         unregister_netdevice_notifier(&rocker_netdevice_nb);
4953         return err;
4954 }
4955
4956 static void __exit rocker_module_exit(void)
4957 {
4958         unregister_netevent_notifier(&rocker_netevent_nb);
4959         unregister_netdevice_notifier(&rocker_netdevice_nb);
4960         pci_unregister_driver(&rocker_pci_driver);
4961 }
4962
4963 module_init(rocker_module_init);
4964 module_exit(rocker_module_exit);
4965
4966 MODULE_LICENSE("GPL v2");
4967 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
4968 MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
4969 MODULE_DESCRIPTION("Rocker switch device driver");
4970 MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);