drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c

   1 /* bnx2x_cmn.c: QLogic Everest network driver.
   2  *
   3  * Copyright (c) 2007-2013 Broadcom Corporation
   4  * Copyright (c) 2014 QLogic Corporation
   5  * All rights reserved
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation.
  10  *
  11  * Maintained by: Ariel Elior <ariel.elior@qlogic.com>
  12  * Written by: Eliezer Tamir
  13  * Based on code from Michael Chan's bnx2 driver
  14  * UDP CSUM errata workaround by Arik Gendelman
  15  * Slowpath and fastpath rework by Vladislav Zolotarov
  16  * Statistics and Link management by Yitchak Gertner
  17  *
  18  */
  19
  20 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  21
  22 #include <linux/etherdevice.h>
  23 #include <linux/if_vlan.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/ip.h>
  26 #include <linux/crash_dump.h>
  27 #include <net/tcp.h>
  28 #include <net/ipv6.h>
  29 #include <net/ip6_checksum.h>
  30 #include <linux/prefetch.h>
  31 #include "bnx2x_cmn.h"
  32 #include "bnx2x_init.h"
  33 #include "bnx2x_sp.h"
  34
  35 static void bnx2x_free_fp_mem_cnic(struct bnx2x *bp);
  36 static int bnx2x_alloc_fp_mem_cnic(struct bnx2x *bp);
  37 static int bnx2x_alloc_fp_mem(struct bnx2x *bp);
  38 static int bnx2x_poll(struct napi_struct *napi, int budget);
  39
  40 static void bnx2x_add_all_napi_cnic(struct bnx2x *bp)
  41 {
  42         int i;
  43
  44         /* Add NAPI objects */
  45         for_each_rx_queue_cnic(bp, i) {
  46                 netif_napi_add(bp->dev, &bnx2x_fp(bp, i, napi),
  47                                bnx2x_poll, NAPI_POLL_WEIGHT);
  48         }
  49 }
  50
  51 static void bnx2x_add_all_napi(struct bnx2x *bp)
  52 {
  53         int i;
  54
  55         /* Add NAPI objects */
  56         for_each_eth_queue(bp, i) {
  57                 netif_napi_add(bp->dev, &bnx2x_fp(bp, i, napi),
  58                                bnx2x_poll, NAPI_POLL_WEIGHT);
  59         }
  60 }
  61
  62 static int bnx2x_calc_num_queues(struct bnx2x *bp)
  63 {
  64         int nq = bnx2x_num_queues ? : netif_get_num_default_rss_queues();
  65
  66         /* Reduce memory usage in kdump environment by using only one queue */
  67         if (is_kdump_kernel())
  68                 nq = 1;
  69
  70         nq = clamp(nq, 1, BNX2X_MAX_QUEUES(bp));
  71         return nq;
  72 }
  73
  74 /**
  75  * bnx2x_move_fp - move content of the fastpath structure.
  76  *
  77  * @bp:         driver handle
  78  * @from:       source FP index
  79  * @to:         destination FP index
  80  *
  81  * Makes sure the contents of the bp->fp[to].napi is kept
  82  * intact. This is done by first copying the napi struct from
  83  * the target to the source, and then mem copying the entire
  84  * source onto the target. Update txdata pointers and related
  85  * content.
  86  */
  87 static inline void bnx2x_move_fp(struct bnx2x *bp, int from, int to)
  88 {
  89         struct bnx2x_fastpath *from_fp = &bp->fp[from];
  90         struct bnx2x_fastpath *to_fp = &bp->fp[to];
  91         struct bnx2x_sp_objs *from_sp_objs = &bp->sp_objs[from];
  92         struct bnx2x_sp_objs *to_sp_objs = &bp->sp_objs[to];
  93         struct bnx2x_fp_stats *from_fp_stats = &bp->fp_stats[from];
  94         struct bnx2x_fp_stats *to_fp_stats = &bp->fp_stats[to];
  95         int old_max_eth_txqs, new_max_eth_txqs;
  96         int old_txdata_index = 0, new_txdata_index = 0;
  97         struct bnx2x_agg_info *old_tpa_info = to_fp->tpa_info;
  98
  99         /* Copy the NAPI object as it has been already initialized */
 100         from_fp->napi = to_fp->napi;
 101
 102         /* Move bnx2x_fastpath contents */
 103         memcpy(to_fp, from_fp, sizeof(*to_fp));
 104         to_fp->index = to;
 105
 106         /* Retain the tpa_info of the original `to' version as we don't want
 107          * 2 FPs to contain the same tpa_info pointer.
 108          */
 109         to_fp->tpa_info = old_tpa_info;
 110
 111         /* move sp_objs contents as well, as their indices match fp ones */
 112         memcpy(to_sp_objs, from_sp_objs, sizeof(*to_sp_objs));
 113
 114         /* move fp_stats contents as well, as their indices match fp ones */
 115         memcpy(to_fp_stats, from_fp_stats, sizeof(*to_fp_stats));
 116
 117         /* Update txdata pointers in fp and move txdata content accordingly:
 118          * Each fp consumes 'max_cos' txdata structures, so the index should be
 119          * decremented by max_cos x delta.
 120          */
 121
 122         old_max_eth_txqs = BNX2X_NUM_ETH_QUEUES(bp) * (bp)->max_cos;
 123         new_max_eth_txqs = (BNX2X_NUM_ETH_QUEUES(bp) - from + to) *
 124                                 (bp)->max_cos;
 125         if (from == FCOE_IDX(bp)) {
 126                 old_txdata_index = old_max_eth_txqs + FCOE_TXQ_IDX_OFFSET;
 127                 new_txdata_index = new_max_eth_txqs + FCOE_TXQ_IDX_OFFSET;
 128         }
 129
 130         memcpy(&bp->bnx2x_txq[new_txdata_index],
 131                &bp->bnx2x_txq[old_txdata_index],
 132                sizeof(struct bnx2x_fp_txdata));
 133         to_fp->txdata_ptr[0] = &bp->bnx2x_txq[new_txdata_index];
 134 }
 135
 136 /**
 137  * bnx2x_fill_fw_str - Fill buffer with FW version string.
 138  *
 139  * @bp:        driver handle
 140  * @buf:       character buffer to fill with the fw name
 141  * @buf_len:   length of the above buffer
 142  *
 143  */
 144 void bnx2x_fill_fw_str(struct bnx2x *bp, char *buf, size_t buf_len)
 145 {
 146         if (IS_PF(bp)) {
 147                 u8 phy_fw_ver[PHY_FW_VER_LEN];
 148
 149                 phy_fw_ver[0] = '\0';
 150                 bnx2x_get_ext_phy_fw_version(&bp->link_params,
 151                                              phy_fw_ver, PHY_FW_VER_LEN);
 152                 strlcpy(buf, bp->fw_ver, buf_len);
 153                 snprintf(buf + strlen(bp->fw_ver), 32 - strlen(bp->fw_ver),
 154                          "bc %d.%d.%d%s%s",
 155                          (bp->common.bc_ver & 0xff0000) >> 16,
 156                          (bp->common.bc_ver & 0xff00) >> 8,
 157                          (bp->common.bc_ver & 0xff),
 158                          ((phy_fw_ver[0] != '\0') ? " phy " : ""), phy_fw_ver);
 159         } else {
 160                 bnx2x_vf_fill_fw_str(bp, buf, buf_len);
 161         }
 162 }
 163
 164 /**
 165  * bnx2x_shrink_eth_fp - guarantees fastpath structures stay intact
 166  *
 167  * @bp: driver handle
 168  * @delta:      number of eth queues which were not allocated
 169  */
 170 static void bnx2x_shrink_eth_fp(struct bnx2x *bp, int delta)
 171 {
 172         int i, cos, old_eth_num = BNX2X_NUM_ETH_QUEUES(bp);
 173
 174         /* Queue pointer cannot be re-set on an fp-basis, as moving pointer
 175          * backward along the array could cause memory to be overridden
 176          */
 177         for (cos = 1; cos < bp->max_cos; cos++) {
 178                 for (i = 0; i < old_eth_num - delta; i++) {
 179                         struct bnx2x_fastpath *fp = &bp->fp[i];
 180                         int new_idx = cos * (old_eth_num - delta) + i;
 181
 182                         memcpy(&bp->bnx2x_txq[new_idx], fp->txdata_ptr[cos],
 183                                sizeof(struct bnx2x_fp_txdata));
 184                         fp->txdata_ptr[cos] = &bp->bnx2x_txq[new_idx];
 185                 }
 186         }
 187 }
 188
 189 int bnx2x_load_count[2][3] = { {0} }; /* per-path: 0-common, 1-port0, 2-port1 */
 190
 191 /* free skb in the packet ring at pos idx
 192  * return idx of last bd freed
 193  */
 194 static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata,
 195                              u16 idx, unsigned int *pkts_compl,
 196                              unsigned int *bytes_compl)
 197 {
 198         struct sw_tx_bd *tx_buf = &txdata->tx_buf_ring[idx];
 199         struct eth_tx_start_bd *tx_start_bd;
 200         struct eth_tx_bd *tx_data_bd;
 201         struct sk_buff *skb = tx_buf->skb;
 202         u16 bd_idx = TX_BD(tx_buf->first_bd), new_cons;
 203         int nbd;
 204         u16 split_bd_len = 0;
 205
 206         /* prefetch skb end pointer to speedup dev_kfree_skb() */
 207         prefetch(&skb->end);
 208
 209         DP(NETIF_MSG_TX_DONE, "fp[%d]: pkt_idx %d  buff @(%p)->skb %p\n",
 210            txdata->txq_index, idx, tx_buf, skb);
 211
 212         tx_start_bd = &txdata->tx_desc_ring[bd_idx].start_bd;
 213
 214         nbd = le16_to_cpu(tx_start_bd->nbd) - 1;
 215 #ifdef BNX2X_STOP_ON_ERROR
 216         if ((nbd - 1) > (MAX_SKB_FRAGS + 2)) {
 217                 BNX2X_ERR("BAD nbd!\n");
 218                 bnx2x_panic();
 219         }
 220 #endif
 221         new_cons = nbd + tx_buf->first_bd;
 222
 223         /* Get the next bd */
 224         bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
 225
 226         /* Skip a parse bd... */
 227         --nbd;
 228         bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
 229
 230         if (tx_buf->flags & BNX2X_HAS_SECOND_PBD) {
 231                 /* Skip second parse bd... */
 232                 --nbd;
 233                 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
 234         }
 235
 236         /* TSO headers+data bds share a common mapping. See bnx2x_tx_split() */
 237         if (tx_buf->flags & BNX2X_TSO_SPLIT_BD) {
 238                 tx_data_bd = &txdata->tx_desc_ring[bd_idx].reg_bd;
 239                 split_bd_len = BD_UNMAP_LEN(tx_data_bd);
 240                 --nbd;
 241                 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
 242         }
 243
 244         /* unmap first bd */
 245         dma_unmap_single(&bp->pdev->dev, BD_UNMAP_ADDR(tx_start_bd),
 246                          BD_UNMAP_LEN(tx_start_bd) + split_bd_len,
 247                          DMA_TO_DEVICE);
 248
 249         /* now free frags */
 250         while (nbd > 0) {
 251
 252                 tx_data_bd = &txdata->tx_desc_ring[bd_idx].reg_bd;
 253                 dma_unmap_page(&bp->pdev->dev, BD_UNMAP_ADDR(tx_data_bd),
 254                                BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE);
 255                 if (--nbd)
 256                         bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
 257         }
 258
 259         /* release skb */
 260         WARN_ON(!skb);
 261         if (likely(skb)) {
 262                 (*pkts_compl)++;
 263                 (*bytes_compl) += skb->len;
 264                 dev_kfree_skb_any(skb);
 265         }
 266
 267         tx_buf->first_bd = 0;
 268         tx_buf->skb = NULL;
 269
 270         return new_cons;
 271 }
 272
 273 int bnx2x_tx_int(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata)
 274 {
 275         struct netdev_queue *txq;
 276         u16 hw_cons, sw_cons, bd_cons = txdata->tx_bd_cons;
 277         unsigned int pkts_compl = 0, bytes_compl = 0;
 278
 279 #ifdef BNX2X_STOP_ON_ERROR
 280         if (unlikely(bp->panic))
 281                 return -1;
 282 #endif
 283
 284         txq = netdev_get_tx_queue(bp->dev, txdata->txq_index);
 285         hw_cons = le16_to_cpu(*txdata->tx_cons_sb);
 286         sw_cons = txdata->tx_pkt_cons;
 287
 288         /* Ensure subsequent loads occur after hw_cons */
 289         smp_rmb();
 290
 291         while (sw_cons != hw_cons) {
 292                 u16 pkt_cons;
 293
 294                 pkt_cons = TX_BD(sw_cons);
 295
 296                 DP(NETIF_MSG_TX_DONE,
 297                    "queue[%d]: hw_cons %u  sw_cons %u  pkt_cons %u\n",
 298                    txdata->txq_index, hw_cons, sw_cons, pkt_cons);
 299
 300                 bd_cons = bnx2x_free_tx_pkt(bp, txdata, pkt_cons,
 301                                             &pkts_compl, &bytes_compl);
 302
 303                 sw_cons++;
 304         }
 305
 306         netdev_tx_completed_queue(txq, pkts_compl, bytes_compl);
 307
 308         txdata->tx_pkt_cons = sw_cons;
 309         txdata->tx_bd_cons = bd_cons;
 310
 311         /* Need to make the tx_bd_cons update visible to start_xmit()
 312          * before checking for netif_tx_queue_stopped().  Without the
 313          * memory barrier, there is a small possibility that
 314          * start_xmit() will miss it and cause the queue to be stopped
 315          * forever.
 316          * On the other hand we need an rmb() here to ensure the proper
 317          * ordering of bit testing in the following
 318          * netif_tx_queue_stopped(txq) call.
 319          */
 320         smp_mb();
 321
 322         if (unlikely(netif_tx_queue_stopped(txq))) {
 323                 /* Taking tx_lock() is needed to prevent re-enabling the queue
 324                  * while it's empty. This could have happen if rx_action() gets
 325                  * suspended in bnx2x_tx_int() after the condition before
 326                  * netif_tx_wake_queue(), while tx_action (bnx2x_start_xmit()):
 327                  *
 328                  * stops the queue->sees fresh tx_bd_cons->releases the queue->
 329                  * sends some packets consuming the whole queue again->
 330                  * stops the queue
 331                  */
 332
 333                 __netif_tx_lock(txq, smp_processor_id());
 334
 335                 if ((netif_tx_queue_stopped(txq)) &&
 336                     (bp->state == BNX2X_STATE_OPEN) &&
 337                     (bnx2x_tx_avail(bp, txdata) >= MAX_DESC_PER_TX_PKT))
 338                         netif_tx_wake_queue(txq);
 339
 340                 __netif_tx_unlock(txq);
 341         }
 342         return 0;
 343 }
 344
 345 static inline void bnx2x_update_last_max_sge(struct bnx2x_fastpath *fp,
 346                                              u16 idx)
 347 {
 348         u16 last_max = fp->last_max_sge;
 349
 350         if (SUB_S16(idx, last_max) > 0)
 351                 fp->last_max_sge = idx;
 352 }
 353
 354 static inline void bnx2x_update_sge_prod(struct bnx2x_fastpath *fp,
 355                                          u16 sge_len,
 356                                          struct eth_end_agg_rx_cqe *cqe)
 357 {
 358         struct bnx2x *bp = fp->bp;
 359         u16 last_max, last_elem, first_elem;
 360         u16 delta = 0;
 361         u16 i;
 362
 363         if (!sge_len)
 364                 return;
 365
 366         /* First mark all used pages */
 367         for (i = 0; i < sge_len; i++)
 368                 BIT_VEC64_CLEAR_BIT(fp->sge_mask,
 369                         RX_SGE(le16_to_cpu(cqe->sgl_or_raw_data.sgl[i])));
 370
 371         DP(NETIF_MSG_RX_STATUS, "fp_cqe->sgl[%d] = %d\n",
 372            sge_len - 1, le16_to_cpu(cqe->sgl_or_raw_data.sgl[sge_len - 1]));
 373
 374         /* Here we assume that the last SGE index is the biggest */
 375         prefetch((void *)(fp->sge_mask));
 376         bnx2x_update_last_max_sge(fp,
 377                 le16_to_cpu(cqe->sgl_or_raw_data.sgl[sge_len - 1]));
 378
 379         last_max = RX_SGE(fp->last_max_sge);
 380         last_elem = last_max >> BIT_VEC64_ELEM_SHIFT;
 381         first_elem = RX_SGE(fp->rx_sge_prod) >> BIT_VEC64_ELEM_SHIFT;
 382
 383         /* If ring is not full */
 384         if (last_elem + 1 != first_elem)
 385                 last_elem++;
 386
 387         /* Now update the prod */
 388         for (i = first_elem; i != last_elem; i = NEXT_SGE_MASK_ELEM(i)) {
 389                 if (likely(fp->sge_mask[i]))
 390                         break;
 391
 392                 fp->sge_mask[i] = BIT_VEC64_ELEM_ONE_MASK;
 393                 delta += BIT_VEC64_ELEM_SZ;
 394         }
 395
 396         if (delta > 0) {
 397                 fp->rx_sge_prod += delta;
 398                 /* clear page-end entries */
 399                 bnx2x_clear_sge_mask_next_elems(fp);
 400         }
 401
 402         DP(NETIF_MSG_RX_STATUS,
 403            "fp->last_max_sge = %d  fp->rx_sge_prod = %d\n",
 404            fp->last_max_sge, fp->rx_sge_prod);
 405 }
 406
 407 /* Get Toeplitz hash value in the skb using the value from the
 408  * CQE (calculated by HW).
 409  */
 410 static u32 bnx2x_get_rxhash(const struct bnx2x *bp,
 411                             const struct eth_fast_path_rx_cqe *cqe,
 412                             enum pkt_hash_types *rxhash_type)
 413 {
 414         /* Get Toeplitz hash from CQE */
 415         if ((bp->dev->features & NETIF_F_RXHASH) &&
 416             (cqe->status_flags & ETH_FAST_PATH_RX_CQE_RSS_HASH_FLG)) {
 417                 enum eth_rss_hash_type htype;
 418
 419                 htype = cqe->status_flags & ETH_FAST_PATH_RX_CQE_RSS_HASH_TYPE;
 420                 *rxhash_type = ((htype == TCP_IPV4_HASH_TYPE) ||
 421                                 (htype == TCP_IPV6_HASH_TYPE)) ?
 422                                PKT_HASH_TYPE_L4 : PKT_HASH_TYPE_L3;
 423
 424                 return le32_to_cpu(cqe->rss_hash_result);
 425         }
 426         *rxhash_type = PKT_HASH_TYPE_NONE;
 427         return 0;
 428 }
 429
 430 static void bnx2x_tpa_start(struct bnx2x_fastpath *fp, u16 queue,
 431                             u16 cons, u16 prod,
 432                             struct eth_fast_path_rx_cqe *cqe)
 433 {
 434         struct bnx2x *bp = fp->bp;
 435         struct sw_rx_bd *cons_rx_buf = &fp->rx_buf_ring[cons];
 436         struct sw_rx_bd *prod_rx_buf = &fp->rx_buf_ring[prod];
 437         struct eth_rx_bd *prod_bd = &fp->rx_desc_ring[prod];
 438         dma_addr_t mapping;
 439         struct bnx2x_agg_info *tpa_info = &fp->tpa_info[queue];
 440         struct sw_rx_bd *first_buf = &tpa_info->first_buf;
 441
 442         /* print error if current state != stop */
 443         if (tpa_info->tpa_state != BNX2X_TPA_STOP)
 444                 BNX2X_ERR("start of bin not in stop [%d]\n", queue);
 445
 446         /* Try to map an empty data buffer from the aggregation info  */
 447         mapping = dma_map_single(&bp->pdev->dev,
 448                                  first_buf->data + NET_SKB_PAD,
 449                                  fp->rx_buf_size, DMA_FROM_DEVICE);
 450         /*
 451          *  ...if it fails - move the skb from the consumer to the producer
 452          *  and set the current aggregation state as ERROR to drop it
 453          *  when TPA_STOP arrives.
 454          */
 455
 456         if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
 457                 /* Move the BD from the consumer to the producer */
 458                 bnx2x_reuse_rx_data(fp, cons, prod);
 459                 tpa_info->tpa_state = BNX2X_TPA_ERROR;
 460                 return;
 461         }
 462
 463         /* move empty data from pool to prod */
 464         prod_rx_buf->data = first_buf->data;
 465         dma_unmap_addr_set(prod_rx_buf, mapping, mapping);
 466         /* point prod_bd to new data */
 467         prod_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
 468         prod_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
 469
 470         /* move partial skb from cons to pool (don't unmap yet) */
 471         *first_buf = *cons_rx_buf;
 472
 473         /* mark bin state as START */
 474         tpa_info->parsing_flags =
 475                 le16_to_cpu(cqe->pars_flags.flags);
 476         tpa_info->vlan_tag = le16_to_cpu(cqe->vlan_tag);
 477         tpa_info->tpa_state = BNX2X_TPA_START;
 478         tpa_info->len_on_bd = le16_to_cpu(cqe->len_on_bd);
 479         tpa_info->placement_offset = cqe->placement_offset;
 480         tpa_info->rxhash = bnx2x_get_rxhash(bp, cqe, &tpa_info->rxhash_type);
 481         if (fp->mode == TPA_MODE_GRO) {
 482                 u16 gro_size = le16_to_cpu(cqe->pkt_len_or_gro_seg_len);
 483                 tpa_info->full_page = SGE_PAGES / gro_size * gro_size;
 484                 tpa_info->gro_size = gro_size;
 485         }
 486
 487 #ifdef BNX2X_STOP_ON_ERROR
 488         fp->tpa_queue_used |= (1 << queue);
 489         DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%llx\n",
 490            fp->tpa_queue_used);
 491 #endif
 492 }
 493
 494 /* Timestamp option length allowed for TPA aggregation:
 495  *
 496  *              nop nop kind length echo val
 497  */
 498 #define TPA_TSTAMP_OPT_LEN      12
 499 /**
 500  * bnx2x_set_gro_params - compute GRO values
 501  *
 502  * @skb:                packet skb
 503  * @parsing_flags:      parsing flags from the START CQE
 504  * @len_on_bd:          total length of the first packet for the
 505  *                      aggregation.
 506  * @pkt_len:            length of all segments
 507  * @num_of_coalesced_segs: count of segments
 508  *
 509  * Approximate value of the MSS for this aggregation calculated using
 510  * the first packet of it.
 511  * Compute number of aggregated segments, and gso_type.
 512  */
 513 static void bnx2x_set_gro_params(struct sk_buff *skb, u16 parsing_flags,
 514                                  u16 len_on_bd, unsigned int pkt_len,
 515                                  u16 num_of_coalesced_segs)
 516 {
 517         /* TPA aggregation won't have either IP options or TCP options
 518          * other than timestamp or IPv6 extension headers.
 519          */
 520         u16 hdrs_len = ETH_HLEN + sizeof(struct tcphdr);
 521
 522         if (GET_FLAG(parsing_flags, PARSING_FLAGS_OVER_ETHERNET_PROTOCOL) ==
 523             PRS_FLAG_OVERETH_IPV6) {
 524                 hdrs_len += sizeof(struct ipv6hdr);
 525                 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
 526         } else {
 527                 hdrs_len += sizeof(struct iphdr);
 528                 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
 529         }
 530
 531         /* Check if there was a TCP timestamp, if there is it's will
 532          * always be 12 bytes length: nop nop kind length echo val.
 533          *
 534          * Otherwise FW would close the aggregation.
 535          */
 536         if (parsing_flags & PARSING_FLAGS_TIME_STAMP_EXIST_FLAG)
 537                 hdrs_len += TPA_TSTAMP_OPT_LEN;
 538
 539         skb_shinfo(skb)->gso_size = len_on_bd - hdrs_len;
 540
 541         /* tcp_gro_complete() will copy NAPI_GRO_CB(skb)->count
 542          * to skb_shinfo(skb)->gso_segs
 543          */
 544         NAPI_GRO_CB(skb)->count = num_of_coalesced_segs;
 545 }
 546
 547 static int bnx2x_alloc_rx_sge(struct bnx2x *bp, struct bnx2x_fastpath *fp,
 548                               u16 index, gfp_t gfp_mask)
 549 {
 550         struct sw_rx_page *sw_buf = &fp->rx_page_ring[index];
 551         struct eth_rx_sge *sge = &fp->rx_sge_ring[index];
 552         struct bnx2x_alloc_pool *pool = &fp->page_pool;
 553         dma_addr_t mapping;
 554
 555         if (!pool->page) {
 556                 pool->page = alloc_pages(gfp_mask, PAGES_PER_SGE_SHIFT);
 557                 if (unlikely(!pool->page))
 558                         return -ENOMEM;
 559
 560                 pool->offset = 0;
 561         }
 562
 563         mapping = dma_map_page(&bp->pdev->dev, pool->page,
 564                                pool->offset, SGE_PAGE_SIZE, DMA_FROM_DEVICE);
 565         if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
 566                 BNX2X_ERR("Can't map sge\n");
 567                 return -ENOMEM;
 568         }
 569
 570         sw_buf->page = pool->page;
 571         sw_buf->offset = pool->offset;
 572
 573         dma_unmap_addr_set(sw_buf, mapping, mapping);
 574
 575         sge->addr_hi = cpu_to_le32(U64_HI(mapping));
 576         sge->addr_lo = cpu_to_le32(U64_LO(mapping));
 577
 578         pool->offset += SGE_PAGE_SIZE;
 579         if (PAGE_SIZE - pool->offset >= SGE_PAGE_SIZE)
 580                 get_page(pool->page);
 581         else
 582                 pool->page = NULL;
 583         return 0;
 584 }
 585
 586 static int bnx2x_fill_frag_skb(struct bnx2x *bp, struct bnx2x_fastpath *fp,
 587                                struct bnx2x_agg_info *tpa_info,
 588                                u16 pages,
 589                                struct sk_buff *skb,
 590                                struct eth_end_agg_rx_cqe *cqe,
 591                                u16 cqe_idx)
 592 {
 593         struct sw_rx_page *rx_pg, old_rx_pg;
 594         u32 i, frag_len, frag_size;
 595         int err, j, frag_id = 0;
 596         u16 len_on_bd = tpa_info->len_on_bd;
 597         u16 full_page = 0, gro_size = 0;
 598
 599         frag_size = le16_to_cpu(cqe->pkt_len) - len_on_bd;
 600
 601         if (fp->mode == TPA_MODE_GRO) {
 602                 gro_size = tpa_info->gro_size;
 603                 full_page = tpa_info->full_page;
 604         }
 605
 606         /* This is needed in order to enable forwarding support */
 607         if (frag_size)
 608                 bnx2x_set_gro_params(skb, tpa_info->parsing_flags, len_on_bd,
 609                                      le16_to_cpu(cqe->pkt_len),
 610                                      le16_to_cpu(cqe->num_of_coalesced_segs));
 611
 612 #ifdef BNX2X_STOP_ON_ERROR
 613         if (pages > min_t(u32, 8, MAX_SKB_FRAGS) * SGE_PAGES) {
 614                 BNX2X_ERR("SGL length is too long: %d. CQE index is %d\n",
 615                           pages, cqe_idx);
 616                 BNX2X_ERR("cqe->pkt_len = %d\n", cqe->pkt_len);
 617                 bnx2x_panic();
 618                 return -EINVAL;
 619         }
 620 #endif
 621
 622         /* Run through the SGL and compose the fragmented skb */
 623         for (i = 0, j = 0; i < pages; i += PAGES_PER_SGE, j++) {
 624                 u16 sge_idx = RX_SGE(le16_to_cpu(cqe->sgl_or_raw_data.sgl[j]));
 625
 626                 /* FW gives the indices of the SGE as if the ring is an array
 627                    (meaning that "next" element will consume 2 indices) */
 628                 if (fp->mode == TPA_MODE_GRO)
 629                         frag_len = min_t(u32, frag_size, (u32)full_page);
 630                 else /* LRO */
 631                         frag_len = min_t(u32, frag_size, (u32)SGE_PAGES);
 632
 633                 rx_pg = &fp->rx_page_ring[sge_idx];
 634                 old_rx_pg = *rx_pg;
 635
 636                 /* If we fail to allocate a substitute page, we simply stop
 637                    where we are and drop the whole packet */
 638                 err = bnx2x_alloc_rx_sge(bp, fp, sge_idx, GFP_ATOMIC);
 639                 if (unlikely(err)) {
 640                         bnx2x_fp_qstats(bp, fp)->rx_skb_alloc_failed++;
 641                         return err;
 642                 }
 643
 644                 dma_unmap_page(&bp->pdev->dev,
 645                                dma_unmap_addr(&old_rx_pg, mapping),
 646                                SGE_PAGE_SIZE, DMA_FROM_DEVICE);
 647                 /* Add one frag and update the appropriate fields in the skb */
 648                 if (fp->mode == TPA_MODE_LRO)
 649                         skb_fill_page_desc(skb, j, old_rx_pg.page,
 650                                            old_rx_pg.offset, frag_len);
 651                 else { /* GRO */
 652                         int rem;
 653                         int offset = 0;
 654                         for (rem = frag_len; rem > 0; rem -= gro_size) {
 655                                 int len = rem > gro_size ? gro_size : rem;
 656                                 skb_fill_page_desc(skb, frag_id++,
 657                                                    old_rx_pg.page,
 658                                                    old_rx_pg.offset + offset,
 659                                                    len);
 660                                 if (offset)
 661                                         get_page(old_rx_pg.page);
 662                                 offset += len;
 663                         }
 664                 }
 665
 666                 skb->data_len += frag_len;
 667                 skb->truesize += SGE_PAGES;
 668                 skb->len += frag_len;
 669
 670                 frag_size -= frag_len;
 671         }
 672
 673         return 0;
 674 }
 675
 676 static void bnx2x_frag_free(const struct bnx2x_fastpath *fp, void *data)
 677 {
 678         if (fp->rx_frag_size)
 679                 skb_free_frag(data);
 680         else
 681                 kfree(data);
 682 }
 683
 684 static void *bnx2x_frag_alloc(const struct bnx2x_fastpath *fp, gfp_t gfp_mask)
 685 {
 686         if (fp->rx_frag_size) {
 687                 /* GFP_KERNEL allocations are used only during initialization */
 688                 if (unlikely(gfpflags_allow_blocking(gfp_mask)))
 689                         return (void *)__get_free_page(gfp_mask);
 690
 691                 return napi_alloc_frag(fp->rx_frag_size);
 692         }
 693
 694         return kmalloc(fp->rx_buf_size + NET_SKB_PAD, gfp_mask);
 695 }
 696
 697 #ifdef CONFIG_INET
 698 static void bnx2x_gro_ip_csum(struct bnx2x *bp, struct sk_buff *skb)
 699 {
 700         const struct iphdr *iph = ip_hdr(skb);
 701         struct tcphdr *th;
 702
 703         skb_set_transport_header(skb, sizeof(struct iphdr));
 704         th = tcp_hdr(skb);
 705
 706         th->check = ~tcp_v4_check(skb->len - skb_transport_offset(skb),
 707                                   iph->saddr, iph->daddr, 0);
 708 }
 709
 710 static void bnx2x_gro_ipv6_csum(struct bnx2x *bp, struct sk_buff *skb)
 711 {
 712         struct ipv6hdr *iph = ipv6_hdr(skb);
 713         struct tcphdr *th;
 714
 715         skb_set_transport_header(skb, sizeof(struct ipv6hdr));
 716         th = tcp_hdr(skb);
 717
 718         th->check = ~tcp_v6_check(skb->len - skb_transport_offset(skb),
 719                                   &iph->saddr, &iph->daddr, 0);
 720 }
 721
 722 static void bnx2x_gro_csum(struct bnx2x *bp, struct sk_buff *skb,
 723                             void (*gro_func)(struct bnx2x*, struct sk_buff*))
 724 {
 725         skb_reset_network_header(skb);
 726         gro_func(bp, skb);
 727         tcp_gro_complete(skb);
 728 }
 729 #endif
 730
 731 static void bnx2x_gro_receive(struct bnx2x *bp, struct bnx2x_fastpath *fp,
 732                                struct sk_buff *skb)
 733 {
 734 #ifdef CONFIG_INET
 735         if (skb_shinfo(skb)->gso_size) {
 736                 switch (be16_to_cpu(skb->protocol)) {
 737                 case ETH_P_IP:
 738                         bnx2x_gro_csum(bp, skb, bnx2x_gro_ip_csum);
 739                         break;
 740                 case ETH_P_IPV6:
 741                         bnx2x_gro_csum(bp, skb, bnx2x_gro_ipv6_csum);
 742                         break;
 743                 default:
 744                         netdev_WARN_ONCE(bp->dev,
 745                                          "Error: FW GRO supports only IPv4/IPv6, not 0x%04x\n",
 746                                          be16_to_cpu(skb->protocol));
 747                 }
 748         }
 749 #endif
 750         skb_record_rx_queue(skb, fp->rx_queue);
 751         napi_gro_receive(&fp->napi, skb);
 752 }
 753
 754 static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp,
 755                            struct bnx2x_agg_info *tpa_info,
 756                            u16 pages,
 757                            struct eth_end_agg_rx_cqe *cqe,
 758                            u16 cqe_idx)
 759 {
 760         struct sw_rx_bd *rx_buf = &tpa_info->first_buf;
 761         u8 pad = tpa_info->placement_offset;
 762         u16 len = tpa_info->len_on_bd;
 763         struct sk_buff *skb = NULL;
 764         u8 *new_data, *data = rx_buf->data;
 765         u8 old_tpa_state = tpa_info->tpa_state;
 766
 767         tpa_info->tpa_state = BNX2X_TPA_STOP;
 768
 769         /* If we there was an error during the handling of the TPA_START -
 770          * drop this aggregation.
 771          */
 772         if (old_tpa_state == BNX2X_TPA_ERROR)
 773                 goto drop;
 774
 775         /* Try to allocate the new data */
 776         new_data = bnx2x_frag_alloc(fp, GFP_ATOMIC);
 777         /* Unmap skb in the pool anyway, as we are going to change
 778            pool entry status to BNX2X_TPA_STOP even if new skb allocation
 779            fails. */
 780         dma_unmap_single(&bp->pdev->dev, dma_unmap_addr(rx_buf, mapping),
 781                          fp->rx_buf_size, DMA_FROM_DEVICE);
 782         if (likely(new_data))
 783                 skb = build_skb(data, fp->rx_frag_size);
 784
 785         if (likely(skb)) {
 786 #ifdef BNX2X_STOP_ON_ERROR
 787                 if (pad + len > fp->rx_buf_size) {
 788                         BNX2X_ERR("skb_put is about to fail...  pad %d  len %d  rx_buf_size %d\n",
 789                                   pad, len, fp->rx_buf_size);
 790                         bnx2x_panic();
 791                         return;
 792                 }
 793 #endif
 794
 795                 skb_reserve(skb, pad + NET_SKB_PAD);
 796                 skb_put(skb, len);
 797                 skb_set_hash(skb, tpa_info->rxhash, tpa_info->rxhash_type);
 798
 799                 skb->protocol = eth_type_trans(skb, bp->dev);
 800                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 801
 802                 if (!bnx2x_fill_frag_skb(bp, fp, tpa_info, pages,
 803                                          skb, cqe, cqe_idx)) {
 804                         if (tpa_info->parsing_flags & PARSING_FLAGS_VLAN)
 805                                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tpa_info->vlan_tag);
 806                         bnx2x_gro_receive(bp, fp, skb);
 807                 } else {
 808                         DP(NETIF_MSG_RX_STATUS,
 809                            "Failed to allocate new pages - dropping packet!\n");
 810                         dev_kfree_skb_any(skb);
 811                 }
 812
 813                 /* put new data in bin */
 814                 rx_buf->data = new_data;
 815
 816                 return;
 817         }
 818         if (new_data)
 819                 bnx2x_frag_free(fp, new_data);
 820 drop:
 821         /* drop the packet and keep the buffer in the bin */
 822         DP(NETIF_MSG_RX_STATUS,
 823            "Failed to allocate or map a new skb - dropping packet!\n");
 824         bnx2x_fp_stats(bp, fp)->eth_q_stats.rx_skb_alloc_failed++;
 825 }
 826
 827 static int bnx2x_alloc_rx_data(struct bnx2x *bp, struct bnx2x_fastpath *fp,
 828                                u16 index, gfp_t gfp_mask)
 829 {
 830         u8 *data;
 831         struct sw_rx_bd *rx_buf = &fp->rx_buf_ring[index];
 832         struct eth_rx_bd *rx_bd = &fp->rx_desc_ring[index];
 833         dma_addr_t mapping;
 834
 835         data = bnx2x_frag_alloc(fp, gfp_mask);
 836         if (unlikely(data == NULL))
 837                 return -ENOMEM;
 838
 839         mapping = dma_map_single(&bp->pdev->dev, data + NET_SKB_PAD,
 840                                  fp->rx_buf_size,
 841                                  DMA_FROM_DEVICE);
 842         if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
 843                 bnx2x_frag_free(fp, data);
 844                 BNX2X_ERR("Can't map rx data\n");
 845                 return -ENOMEM;
 846         }
 847
 848         rx_buf->data = data;
 849         dma_unmap_addr_set(rx_buf, mapping, mapping);
 850
 851         rx_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
 852         rx_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
 853
 854         return 0;
 855 }
 856
 857 static
 858 void bnx2x_csum_validate(struct sk_buff *skb, union eth_rx_cqe *cqe,
 859                                  struct bnx2x_fastpath *fp,
 860                                  struct bnx2x_eth_q_stats *qstats)
 861 {
 862         /* Do nothing if no L4 csum validation was done.
 863          * We do not check whether IP csum was validated. For IPv4 we assume
 864          * that if the card got as far as validating the L4 csum, it also
 865          * validated the IP csum. IPv6 has no IP csum.
 866          */
 867         if (cqe->fast_path_cqe.status_flags &
 868             ETH_FAST_PATH_RX_CQE_L4_XSUM_NO_VALIDATION_FLG)
 869                 return;
 870
 871         /* If L4 validation was done, check if an error was found. */
 872
 873         if (cqe->fast_path_cqe.type_error_flags &
 874             (ETH_FAST_PATH_RX_CQE_IP_BAD_XSUM_FLG |
 875              ETH_FAST_PATH_RX_CQE_L4_BAD_XSUM_FLG))
 876                 qstats->hw_csum_err++;
 877         else
 878                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 879 }
 880
 881 static int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget)
 882 {
 883         struct bnx2x *bp = fp->bp;
 884         u16 bd_cons, bd_prod, bd_prod_fw, comp_ring_cons;
 885         u16 sw_comp_cons, sw_comp_prod;
 886         int rx_pkt = 0;
 887         union eth_rx_cqe *cqe;
 888         struct eth_fast_path_rx_cqe *cqe_fp;
 889
 890 #ifdef BNX2X_STOP_ON_ERROR
 891         if (unlikely(bp->panic))
 892                 return 0;
 893 #endif
 894         if (budget <= 0)
 895                 return rx_pkt;
 896
 897         bd_cons = fp->rx_bd_cons;
 898         bd_prod = fp->rx_bd_prod;
 899         bd_prod_fw = bd_prod;
 900         sw_comp_cons = fp->rx_comp_cons;
 901         sw_comp_prod = fp->rx_comp_prod;
 902
 903         comp_ring_cons = RCQ_BD(sw_comp_cons);
 904         cqe = &fp->rx_comp_ring[comp_ring_cons];
 905         cqe_fp = &cqe->fast_path_cqe;
 906
 907         DP(NETIF_MSG_RX_STATUS,
 908            "queue[%d]: sw_comp_cons %u\n", fp->index, sw_comp_cons);
 909
 910         while (BNX2X_IS_CQE_COMPLETED(cqe_fp)) {
 911                 struct sw_rx_bd *rx_buf = NULL;
 912                 struct sk_buff *skb;
 913                 u8 cqe_fp_flags;
 914                 enum eth_rx_cqe_type cqe_fp_type;
 915                 u16 len, pad, queue;
 916                 u8 *data;
 917                 u32 rxhash;
 918                 enum pkt_hash_types rxhash_type;
 919
 920 #ifdef BNX2X_STOP_ON_ERROR
 921                 if (unlikely(bp->panic))
 922                         return 0;
 923 #endif
 924
 925                 bd_prod = RX_BD(bd_prod);
 926                 bd_cons = RX_BD(bd_cons);
 927
 928                 /* A rmb() is required to ensure that the CQE is not read
 929                  * before it is written by the adapter DMA.  PCI ordering
 930                  * rules will make sure the other fields are written before
 931                  * the marker at the end of struct eth_fast_path_rx_cqe
 932                  * but without rmb() a weakly ordered processor can process
 933                  * stale data.  Without the barrier TPA state-machine might
 934                  * enter inconsistent state and kernel stack might be
 935                  * provided with incorrect packet description - these lead
 936                  * to various kernel crashed.
 937                  */
 938                 rmb();
 939
 940                 cqe_fp_flags = cqe_fp->type_error_flags;
 941                 cqe_fp_type = cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE;
 942
 943                 DP(NETIF_MSG_RX_STATUS,
 944                    "CQE type %x  err %x  status %x  queue %x  vlan %x  len %u\n",
 945                    CQE_TYPE(cqe_fp_flags),
 946                    cqe_fp_flags, cqe_fp->status_flags,
 947                    le32_to_cpu(cqe_fp->rss_hash_result),
 948                    le16_to_cpu(cqe_fp->vlan_tag),
 949                    le16_to_cpu(cqe_fp->pkt_len_or_gro_seg_len));
 950
 951                 /* is this a slowpath msg? */
 952                 if (unlikely(CQE_TYPE_SLOW(cqe_fp_type))) {
 953                         bnx2x_sp_event(fp, cqe);
 954                         goto next_cqe;
 955                 }
 956
 957                 rx_buf = &fp->rx_buf_ring[bd_cons];
 958                 data = rx_buf->data;
 959
 960                 if (!CQE_TYPE_FAST(cqe_fp_type)) {
 961                         struct bnx2x_agg_info *tpa_info;
 962                         u16 frag_size, pages;
 963 #ifdef BNX2X_STOP_ON_ERROR
 964                         /* sanity check */
 965                         if (fp->mode == TPA_MODE_DISABLED &&
 966                             (CQE_TYPE_START(cqe_fp_type) ||
 967                              CQE_TYPE_STOP(cqe_fp_type)))
 968                                 BNX2X_ERR("START/STOP packet while TPA disabled, type %x\n",
 969                                           CQE_TYPE(cqe_fp_type));
 970 #endif
 971
 972                         if (CQE_TYPE_START(cqe_fp_type)) {
 973                                 u16 queue = cqe_fp->queue_index;
 974                                 DP(NETIF_MSG_RX_STATUS,
 975                                    "calling tpa_start on queue %d\n",
 976                                    queue);
 977
 978                                 bnx2x_tpa_start(fp, queue,
 979                                                 bd_cons, bd_prod,
 980                                                 cqe_fp);
 981
 982                                 goto next_rx;
 983                         }
 984                         queue = cqe->end_agg_cqe.queue_index;
 985                         tpa_info = &fp->tpa_info[queue];
 986                         DP(NETIF_MSG_RX_STATUS,
 987                            "calling tpa_stop on queue %d\n",
 988                            queue);
 989
 990                         frag_size = le16_to_cpu(cqe->end_agg_cqe.pkt_len) -
 991                                     tpa_info->len_on_bd;
 992
 993                         if (fp->mode == TPA_MODE_GRO)
 994                                 pages = (frag_size + tpa_info->full_page - 1) /
 995                                          tpa_info->full_page;
 996                         else
 997                                 pages = SGE_PAGE_ALIGN(frag_size) >>
 998                                         SGE_PAGE_SHIFT;
 999
1000                         bnx2x_tpa_stop(bp, fp, tpa_info, pages,
1001                                        &cqe->end_agg_cqe, comp_ring_cons);
1002 #ifdef BNX2X_STOP_ON_ERROR
1003                         if (bp->panic)
1004                                 return 0;
1005 #endif
1006
1007                         bnx2x_update_sge_prod(fp, pages, &cqe->end_agg_cqe);
1008                         goto next_cqe;
1009                 }
1010                 /* non TPA */
1011                 len = le16_to_cpu(cqe_fp->pkt_len_or_gro_seg_len);
1012                 pad = cqe_fp->placement_offset;
1013                 dma_sync_single_for_cpu(&bp->pdev->dev,
1014                                         dma_unmap_addr(rx_buf, mapping),
1015                                         pad + RX_COPY_THRESH,
1016                                         DMA_FROM_DEVICE);
1017                 pad += NET_SKB_PAD;
1018                 prefetch(data + pad); /* speedup eth_type_trans() */
1019                 /* is this an error packet? */
1020                 if (unlikely(cqe_fp_flags & ETH_RX_ERROR_FALGS)) {
1021                         DP(NETIF_MSG_RX_ERR | NETIF_MSG_RX_STATUS,
1022                            "ERROR  flags %x  rx packet %u\n",
1023                            cqe_fp_flags, sw_comp_cons);
1024                         bnx2x_fp_qstats(bp, fp)->rx_err_discard_pkt++;
1025                         goto reuse_rx;
1026                 }
1027
1028                 /* Since we don't have a jumbo ring
1029                  * copy small packets if mtu > 1500
1030                  */
1031                 if ((bp->dev->mtu > ETH_MAX_PACKET_SIZE) &&
1032                     (len <= RX_COPY_THRESH)) {
1033                         skb = napi_alloc_skb(&fp->napi, len);
1034                         if (skb == NULL) {
1035                                 DP(NETIF_MSG_RX_ERR | NETIF_MSG_RX_STATUS,
1036                                    "ERROR  packet dropped because of alloc failure\n");
1037                                 bnx2x_fp_qstats(bp, fp)->rx_skb_alloc_failed++;
1038                                 goto reuse_rx;
1039                         }
1040                         memcpy(skb->data, data + pad, len);
1041                         bnx2x_reuse_rx_data(fp, bd_cons, bd_prod);
1042                 } else {
1043                         if (likely(bnx2x_alloc_rx_data(bp, fp, bd_prod,
1044                                                        GFP_ATOMIC) == 0)) {
1045                                 dma_unmap_single(&bp->pdev->dev,
1046                                                  dma_unmap_addr(rx_buf, mapping),
1047                                                  fp->rx_buf_size,
1048                                                  DMA_FROM_DEVICE);
1049                                 skb = build_skb(data, fp->rx_frag_size);
1050                                 if (unlikely(!skb)) {
1051                                         bnx2x_frag_free(fp, data);
1052                                         bnx2x_fp_qstats(bp, fp)->
1053                                                         rx_skb_alloc_failed++;
1054                                         goto next_rx;
1055                                 }
1056                                 skb_reserve(skb, pad);
1057                         } else {
1058                                 DP(NETIF_MSG_RX_ERR | NETIF_MSG_RX_STATUS,
1059                                    "ERROR  packet dropped because of alloc failure\n");
1060                                 bnx2x_fp_qstats(bp, fp)->rx_skb_alloc_failed++;
1061 reuse_rx:
1062                                 bnx2x_reuse_rx_data(fp, bd_cons, bd_prod);
1063                                 goto next_rx;
1064                         }
1065                 }
1066
1067                 skb_put(skb, len);
1068                 skb->protocol = eth_type_trans(skb, bp->dev);
1069
1070                 /* Set Toeplitz hash for a none-LRO skb */
1071                 rxhash = bnx2x_get_rxhash(bp, cqe_fp, &rxhash_type);
1072                 skb_set_hash(skb, rxhash, rxhash_type);
1073
1074                 skb_checksum_none_assert(skb);
1075
1076                 if (bp->dev->features & NETIF_F_RXCSUM)
1077                         bnx2x_csum_validate(skb, cqe, fp,
1078                                             bnx2x_fp_qstats(bp, fp));
1079
1080                 skb_record_rx_queue(skb, fp->rx_queue);
1081
1082                 /* Check if this packet was timestamped */
1083                 if (unlikely(cqe->fast_path_cqe.type_error_flags &
1084                              (1 << ETH_FAST_PATH_RX_CQE_PTP_PKT_SHIFT)))
1085                         bnx2x_set_rx_ts(bp, skb);
1086
1087                 if (le16_to_cpu(cqe_fp->pars_flags.flags) &
1088                     PARSING_FLAGS_VLAN)
1089                         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
1090                                                le16_to_cpu(cqe_fp->vlan_tag));
1091
1092                 napi_gro_receive(&fp->napi, skb);
1093 next_rx:
1094                 rx_buf->data = NULL;
1095
1096                 bd_cons = NEXT_RX_IDX(bd_cons);
1097                 bd_prod = NEXT_RX_IDX(bd_prod);
1098                 bd_prod_fw = NEXT_RX_IDX(bd_prod_fw);
1099                 rx_pkt++;
1100 next_cqe:
1101                 sw_comp_prod = NEXT_RCQ_IDX(sw_comp_prod);
1102                 sw_comp_cons = NEXT_RCQ_IDX(sw_comp_cons);
1103
1104                 /* mark CQE as free */
1105                 BNX2X_SEED_CQE(cqe_fp);
1106
1107                 if (rx_pkt == budget)
1108                         break;
1109
1110                 comp_ring_cons = RCQ_BD(sw_comp_cons);
1111                 cqe = &fp->rx_comp_ring[comp_ring_cons];
1112                 cqe_fp = &cqe->fast_path_cqe;
1113         } /* while */
1114
1115         fp->rx_bd_cons = bd_cons;
1116         fp->rx_bd_prod = bd_prod_fw;
1117         fp->rx_comp_cons = sw_comp_cons;
1118         fp->rx_comp_prod = sw_comp_prod;
1119
1120         /* Update producers */
1121         bnx2x_update_rx_prod(bp, fp, bd_prod_fw, sw_comp_prod,
1122                              fp->rx_sge_prod);
1123
1124         return rx_pkt;
1125 }
1126
1127 static irqreturn_t bnx2x_msix_fp_int(int irq, void *fp_cookie)
1128 {
1129         struct bnx2x_fastpath *fp = fp_cookie;
1130         struct bnx2x *bp = fp->bp;
1131         u8 cos;
1132
1133         DP(NETIF_MSG_INTR,
1134            "got an MSI-X interrupt on IDX:SB [fp %d fw_sd %d igusb %d]\n",
1135            fp->index, fp->fw_sb_id, fp->igu_sb_id);
1136
1137         bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID, 0, IGU_INT_DISABLE, 0);
1138
1139 #ifdef BNX2X_STOP_ON_ERROR
1140         if (unlikely(bp->panic))
1141                 return IRQ_HANDLED;
1142 #endif
1143
1144         /* Handle Rx and Tx according to MSI-X vector */
1145         for_each_cos_in_tx_queue(fp, cos)
1146                 prefetch(fp->txdata_ptr[cos]->tx_cons_sb);
1147
1148         prefetch(&fp->sb_running_index[SM_RX_ID]);
1149         napi_schedule_irqoff(&bnx2x_fp(bp, fp->index, napi));
1150
1151         return IRQ_HANDLED;
1152 }
1153
1154 /* HW Lock for shared dual port PHYs */
1155 void bnx2x_acquire_phy_lock(struct bnx2x *bp)
1156 {
1157         mutex_lock(&bp->port.phy_mutex);
1158
1159         bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_MDIO);
1160 }
1161
1162 void bnx2x_release_phy_lock(struct bnx2x *bp)
1163 {
1164         bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_MDIO);
1165
1166         mutex_unlock(&bp->port.phy_mutex);
1167 }
1168
1169 /* calculates MF speed according to current linespeed and MF configuration */
1170 u16 bnx2x_get_mf_speed(struct bnx2x *bp)
1171 {
1172         u16 line_speed = bp->link_vars.line_speed;
1173         if (IS_MF(bp)) {
1174                 u16 maxCfg = bnx2x_extract_max_cfg(bp,
1175                                                    bp->mf_config[BP_VN(bp)]);
1176
1177                 /* Calculate the current MAX line speed limit for the MF
1178                  * devices
1179                  */
1180                 if (IS_MF_PERCENT_BW(bp))
1181                         line_speed = (line_speed * maxCfg) / 100;
1182                 else { /* SD mode */
1183                         u16 vn_max_rate = maxCfg * 100;
1184
1185                         if (vn_max_rate < line_speed)
1186                                 line_speed = vn_max_rate;
1187                 }
1188         }
1189
1190         return line_speed;
1191 }
1192
1193 /**
1194  * bnx2x_fill_report_data - fill link report data to report
1195  *
1196  * @bp:         driver handle
1197  * @data:       link state to update
1198  *
1199  * It uses a none-atomic bit operations because is called under the mutex.
1200  */
1201 static void bnx2x_fill_report_data(struct bnx2x *bp,
1202                                    struct bnx2x_link_report_data *data)
1203 {
1204         memset(data, 0, sizeof(*data));
1205
1206         if (IS_PF(bp)) {
1207                 /* Fill the report data: effective line speed */
1208                 data->line_speed = bnx2x_get_mf_speed(bp);
1209
1210                 /* Link is down */
1211                 if (!bp->link_vars.link_up || (bp->flags & MF_FUNC_DIS))
1212                         __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1213                                   &data->link_report_flags);
1214
1215                 if (!BNX2X_NUM_ETH_QUEUES(bp))
1216                         __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1217                                   &data->link_report_flags);
1218
1219                 /* Full DUPLEX */
1220                 if (bp->link_vars.duplex == DUPLEX_FULL)
1221                         __set_bit(BNX2X_LINK_REPORT_FD,
1222                                   &data->link_report_flags);
1223
1224                 /* Rx Flow Control is ON */
1225                 if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_RX)
1226                         __set_bit(BNX2X_LINK_REPORT_RX_FC_ON,
1227                                   &data->link_report_flags);
1228
1229                 /* Tx Flow Control is ON */
1230                 if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_TX)
1231                         __set_bit(BNX2X_LINK_REPORT_TX_FC_ON,
1232                                   &data->link_report_flags);
1233         } else { /* VF */
1234                 *data = bp->vf_link_vars;
1235         }
1236 }
1237
1238 /**
1239  * bnx2x_link_report - report link status to OS.
1240  *
1241  * @bp:         driver handle
1242  *
1243  * Calls the __bnx2x_link_report() under the same locking scheme
1244  * as a link/PHY state managing code to ensure a consistent link
1245  * reporting.
1246  */
1247
1248 void bnx2x_link_report(struct bnx2x *bp)
1249 {
1250         bnx2x_acquire_phy_lock(bp);
1251         __bnx2x_link_report(bp);
1252         bnx2x_release_phy_lock(bp);
1253 }
1254
1255 /**
1256  * __bnx2x_link_report - report link status to OS.
1257  *
1258  * @bp:         driver handle
1259  *
1260  * None atomic implementation.
1261  * Should be called under the phy_lock.
1262  */
1263 void __bnx2x_link_report(struct bnx2x *bp)
1264 {
1265         struct bnx2x_link_report_data cur_data;
1266
1267         if (bp->force_link_down) {
1268                 bp->link_vars.link_up = 0;
1269                 return;
1270         }
1271
1272         /* reread mf_cfg */
1273         if (IS_PF(bp) && !CHIP_IS_E1(bp))
1274                 bnx2x_read_mf_cfg(bp);
1275
1276         /* Read the current link report info */
1277         bnx2x_fill_report_data(bp, &cur_data);
1278
1279         /* Don't report link down or exactly the same link status twice */
1280         if (!memcmp(&cur_data, &bp->last_reported_link, sizeof(cur_data)) ||
1281             (test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1282                       &bp->last_reported_link.link_report_flags) &&
1283              test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1284                       &cur_data.link_report_flags)))
1285                 return;
1286
1287         bp->link_cnt++;
1288
1289         /* We are going to report a new link parameters now -
1290          * remember the current data for the next time.
1291          */
1292         memcpy(&bp->last_reported_link, &cur_data, sizeof(cur_data));
1293
1294         /* propagate status to VFs */
1295         if (IS_PF(bp))
1296                 bnx2x_iov_link_update(bp);
1297
1298         if (test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1299                      &cur_data.link_report_flags)) {
1300                 netif_carrier_off(bp->dev);
1301                 netdev_err(bp->dev, "NIC Link is Down\n");
1302                 return;
1303         } else {
1304                 const char *duplex;
1305                 const char *flow;
1306
1307                 netif_carrier_on(bp->dev);
1308
1309                 if (test_and_clear_bit(BNX2X_LINK_REPORT_FD,
1310                                        &cur_data.link_report_flags))
1311                         duplex = "full";
1312                 else
1313                         duplex = "half";
1314
1315                 /* Handle the FC at the end so that only these flags would be
1316                  * possibly set. This way we may easily check if there is no FC
1317                  * enabled.
1318                  */
1319                 if (cur_data.link_report_flags) {
1320                         if (test_bit(BNX2X_LINK_REPORT_RX_FC_ON,
1321                                      &cur_data.link_report_flags)) {
1322                                 if (test_bit(BNX2X_LINK_REPORT_TX_FC_ON,
1323                                      &cur_data.link_report_flags))
1324                                         flow = "ON - receive & transmit";
1325                                 else
1326                                         flow = "ON - receive";
1327                         } else {
1328                                 flow = "ON - transmit";
1329                         }
1330                 } else {
1331                         flow = "none";
1332                 }
1333                 netdev_info(bp->dev, "NIC Link is Up, %d Mbps %s duplex, Flow control: %s\n",
1334                             cur_data.line_speed, duplex, flow);
1335         }
1336 }
1337
1338 static void bnx2x_set_next_page_sgl(struct bnx2x_fastpath *fp)
1339 {
1340         int i;
1341
1342         for (i = 1; i <= NUM_RX_SGE_PAGES; i++) {
1343                 struct eth_rx_sge *sge;
1344
1345                 sge = &fp->rx_sge_ring[RX_SGE_CNT * i - 2];
1346                 sge->addr_hi =
1347                         cpu_to_le32(U64_HI(fp->rx_sge_mapping +
1348                         BCM_PAGE_SIZE*(i % NUM_RX_SGE_PAGES)));
1349
1350                 sge->addr_lo =
1351                         cpu_to_le32(U64_LO(fp->rx_sge_mapping +
1352                         BCM_PAGE_SIZE*(i % NUM_RX_SGE_PAGES)));
1353         }
1354 }
1355
1356 static void bnx2x_free_tpa_pool(struct bnx2x *bp,
1357                                 struct bnx2x_fastpath *fp, int last)
1358 {
1359         int i;
1360
1361         for (i = 0; i < last; i++) {
1362                 struct bnx2x_agg_info *tpa_info = &fp->tpa_info[i];
1363                 struct sw_rx_bd *first_buf = &tpa_info->first_buf;
1364                 u8 *data = first_buf->data;
1365
1366                 if (data == NULL) {
1367                         DP(NETIF_MSG_IFDOWN, "tpa bin %d empty on free\n", i);
1368                         continue;
1369                 }
1370                 if (tpa_info->tpa_state == BNX2X_TPA_START)
1371                         dma_unmap_single(&bp->pdev->dev,
1372                                          dma_unmap_addr(first_buf, mapping),
1373                                          fp->rx_buf_size, DMA_FROM_DEVICE);
1374                 bnx2x_frag_free(fp, data);
1375                 first_buf->data = NULL;
1376         }
1377 }
1378
1379 void bnx2x_init_rx_rings_cnic(struct bnx2x *bp)
1380 {
1381         int j;
1382
1383         for_each_rx_queue_cnic(bp, j) {
1384                 struct bnx2x_fastpath *fp = &bp->fp[j];
1385
1386                 fp->rx_bd_cons = 0;
1387
1388                 /* Activate BD ring */
1389                 /* Warning!
1390                  * this will generate an interrupt (to the TSTORM)
1391                  * must only be done after chip is initialized
1392                  */
1393                 bnx2x_update_rx_prod(bp, fp, fp->rx_bd_prod, fp->rx_comp_prod,
1394                                      fp->rx_sge_prod);
1395         }
1396 }
1397
1398 void bnx2x_init_rx_rings(struct bnx2x *bp)
1399 {
1400         int func = BP_FUNC(bp);
1401         u16 ring_prod;
1402         int i, j;
1403
1404         /* Allocate TPA resources */
1405         for_each_eth_queue(bp, j) {
1406                 struct bnx2x_fastpath *fp = &bp->fp[j];
1407
1408                 DP(NETIF_MSG_IFUP,
1409                    "mtu %d  rx_buf_size %d\n", bp->dev->mtu, fp->rx_buf_size);
1410
1411                 if (fp->mode != TPA_MODE_DISABLED) {
1412                         /* Fill the per-aggregation pool */
1413                         for (i = 0; i < MAX_AGG_QS(bp); i++) {
1414                                 struct bnx2x_agg_info *tpa_info =
1415                                         &fp->tpa_info[i];
1416                                 struct sw_rx_bd *first_buf =
1417                                         &tpa_info->first_buf;
1418
1419                                 first_buf->data =
1420                                         bnx2x_frag_alloc(fp, GFP_KERNEL);
1421                                 if (!first_buf->data) {
1422                                         BNX2X_ERR("Failed to allocate TPA skb pool for queue[%d] - disabling TPA on this queue!\n",
1423                                                   j);
1424                                         bnx2x_free_tpa_pool(bp, fp, i);
1425                                         fp->mode = TPA_MODE_DISABLED;
1426                                         break;
1427                                 }
1428                                 dma_unmap_addr_set(first_buf, mapping, 0);
1429                                 tpa_info->tpa_state = BNX2X_TPA_STOP;
1430                         }
1431
1432                         /* "next page" elements initialization */
1433                         bnx2x_set_next_page_sgl(fp);
1434
1435                         /* set SGEs bit mask */
1436                         bnx2x_init_sge_ring_bit_mask(fp);
1437
1438                         /* Allocate SGEs and initialize the ring elements */
1439                         for (i = 0, ring_prod = 0;
1440                              i < MAX_RX_SGE_CNT*NUM_RX_SGE_PAGES; i++) {
1441
1442                                 if (bnx2x_alloc_rx_sge(bp, fp, ring_prod,
1443                                                        GFP_KERNEL) < 0) {
1444                                         BNX2X_ERR("was only able to allocate %d rx sges\n",
1445                                                   i);
1446                                         BNX2X_ERR("disabling TPA for queue[%d]\n",
1447                                                   j);
1448                                         /* Cleanup already allocated elements */
1449                                         bnx2x_free_rx_sge_range(bp, fp,
1450                                                                 ring_prod);
1451                                         bnx2x_free_tpa_pool(bp, fp,
1452                                                             MAX_AGG_QS(bp));
1453                                         fp->mode = TPA_MODE_DISABLED;
1454                                         ring_prod = 0;
1455                                         break;
1456                                 }
1457                                 ring_prod = NEXT_SGE_IDX(ring_prod);
1458                         }
1459
1460                         fp->rx_sge_prod = ring_prod;
1461                 }
1462         }
1463
1464         for_each_eth_queue(bp, j) {
1465                 struct bnx2x_fastpath *fp = &bp->fp[j];
1466
1467                 fp->rx_bd_cons = 0;
1468
1469                 /* Activate BD ring */
1470                 /* Warning!
1471                  * this will generate an interrupt (to the TSTORM)
1472                  * must only be done after chip is initialized
1473                  */
1474                 bnx2x_update_rx_prod(bp, fp, fp->rx_bd_prod, fp->rx_comp_prod,
1475                                      fp->rx_sge_prod);
1476
1477                 if (j != 0)
1478                         continue;
1479
1480                 if (CHIP_IS_E1(bp)) {
1481                         REG_WR(bp, BAR_USTRORM_INTMEM +
1482                                USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func),
1483                                U64_LO(fp->rx_comp_mapping));
1484                         REG_WR(bp, BAR_USTRORM_INTMEM +
1485                                USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func) + 4,
1486                                U64_HI(fp->rx_comp_mapping));
1487                 }
1488         }
1489 }
1490
1491 static void bnx2x_free_tx_skbs_queue(struct bnx2x_fastpath *fp)
1492 {
1493         u8 cos;
1494         struct bnx2x *bp = fp->bp;
1495
1496         for_each_cos_in_tx_queue(fp, cos) {
1497                 struct bnx2x_fp_txdata *txdata = fp->txdata_ptr[cos];
1498                 unsigned pkts_compl = 0, bytes_compl = 0;
1499
1500                 u16 sw_prod = txdata->tx_pkt_prod;
1501                 u16 sw_cons = txdata->tx_pkt_cons;
1502
1503                 while (sw_cons != sw_prod) {
1504                         bnx2x_free_tx_pkt(bp, txdata, TX_BD(sw_cons),
1505                                           &pkts_compl, &bytes_compl);
1506                         sw_cons++;
1507                 }
1508
1509                 netdev_tx_reset_queue(
1510                         netdev_get_tx_queue(bp->dev,
1511                                             txdata->txq_index));
1512         }
1513 }
1514
1515 static void bnx2x_free_tx_skbs_cnic(struct bnx2x *bp)
1516 {
1517         int i;
1518
1519         for_each_tx_queue_cnic(bp, i) {
1520                 bnx2x_free_tx_skbs_queue(&bp->fp[i]);
1521         }
1522 }
1523
1524 static void bnx2x_free_tx_skbs(struct bnx2x *bp)
1525 {
1526         int i;
1527
1528         for_each_eth_queue(bp, i) {
1529                 bnx2x_free_tx_skbs_queue(&bp->fp[i]);
1530         }
1531 }
1532
1533 static void bnx2x_free_rx_bds(struct bnx2x_fastpath *fp)
1534 {
1535         struct bnx2x *bp = fp->bp;
1536         int i;
1537
1538         /* ring wasn't allocated */
1539         if (fp->rx_buf_ring == NULL)
1540                 return;
1541
1542         for (i = 0; i < NUM_RX_BD; i++) {
1543                 struct sw_rx_bd *rx_buf = &fp->rx_buf_ring[i];
1544                 u8 *data = rx_buf->data;
1545
1546                 if (data == NULL)
1547                         continue;
1548                 dma_unmap_single(&bp->pdev->dev,
1549                                  dma_unmap_addr(rx_buf, mapping),
1550                                  fp->rx_buf_size, DMA_FROM_DEVICE);
1551
1552                 rx_buf->data = NULL;
1553                 bnx2x_frag_free(fp, data);
1554         }
1555 }
1556
1557 static void bnx2x_free_rx_skbs_cnic(struct bnx2x *bp)
1558 {
1559         int j;
1560
1561         for_each_rx_queue_cnic(bp, j) {
1562                 bnx2x_free_rx_bds(&bp->fp[j]);
1563         }
1564 }
1565
1566 static void bnx2x_free_rx_skbs(struct bnx2x *bp)
1567 {
1568         int j;
1569
1570         for_each_eth_queue(bp, j) {
1571                 struct bnx2x_fastpath *fp = &bp->fp[j];
1572
1573                 bnx2x_free_rx_bds(fp);
1574
1575                 if (fp->mode != TPA_MODE_DISABLED)
1576                         bnx2x_free_tpa_pool(bp, fp, MAX_AGG_QS(bp));
1577         }
1578 }
1579
1580 static void bnx2x_free_skbs_cnic(struct bnx2x *bp)
1581 {
1582         bnx2x_free_tx_skbs_cnic(bp);
1583         bnx2x_free_rx_skbs_cnic(bp);
1584 }
1585
1586 void bnx2x_free_skbs(struct bnx2x *bp)
1587 {
1588         bnx2x_free_tx_skbs(bp);
1589         bnx2x_free_rx_skbs(bp);
1590 }
1591
1592 void bnx2x_update_max_mf_config(struct bnx2x *bp, u32 value)
1593 {
1594         /* load old values */
1595         u32 mf_cfg = bp->mf_config[BP_VN(bp)];
1596
1597         if (value != bnx2x_extract_max_cfg(bp, mf_cfg)) {
1598                 /* leave all but MAX value */
1599                 mf_cfg &= ~FUNC_MF_CFG_MAX_BW_MASK;
1600
1601                 /* set new MAX value */
1602                 mf_cfg |= (value << FUNC_MF_CFG_MAX_BW_SHIFT)
1603                                 & FUNC_MF_CFG_MAX_BW_MASK;
1604
1605                 bnx2x_fw_command(bp, DRV_MSG_CODE_SET_MF_BW, mf_cfg);
1606         }
1607 }
1608
1609 /**
1610  * bnx2x_free_msix_irqs - free previously requested MSI-X IRQ vectors
1611  *
1612  * @bp:         driver handle
1613  * @nvecs:      number of vectors to be released
1614  */
1615 static void bnx2x_free_msix_irqs(struct bnx2x *bp, int nvecs)
1616 {
1617         int i, offset = 0;
1618
1619         if (nvecs == offset)
1620                 return;
1621
1622         /* VFs don't have a default SB */
1623         if (IS_PF(bp)) {
1624                 free_irq(bp->msix_table[offset].vector, bp->dev);
1625                 DP(NETIF_MSG_IFDOWN, "released sp irq (%d)\n",
1626                    bp->msix_table[offset].vector);
1627                 offset++;
1628         }
1629
1630         if (CNIC_SUPPORT(bp)) {
1631                 if (nvecs == offset)
1632                         return;
1633                 offset++;
1634         }
1635
1636         for_each_eth_queue(bp, i) {
1637                 if (nvecs == offset)
1638                         return;
1639                 DP(NETIF_MSG_IFDOWN, "about to release fp #%d->%d irq\n",
1640                    i, bp->msix_table[offset].vector);
1641
1642                 free_irq(bp->msix_table[offset++].vector, &bp->fp[i]);
1643         }
1644 }
1645
1646 void bnx2x_free_irq(struct bnx2x *bp)
1647 {
1648         if (bp->flags & USING_MSIX_FLAG &&
1649             !(bp->flags & USING_SINGLE_MSIX_FLAG)) {
1650                 int nvecs = BNX2X_NUM_ETH_QUEUES(bp) + CNIC_SUPPORT(bp);
1651
1652                 /* vfs don't have a default status block */
1653                 if (IS_PF(bp))
1654                         nvecs++;
1655
1656                 bnx2x_free_msix_irqs(bp, nvecs);
1657         } else {
1658                 free_irq(bp->dev->irq, bp->dev);
1659         }
1660 }
1661
1662 int bnx2x_enable_msix(struct bnx2x *bp)
1663 {
1664         int msix_vec = 0, i, rc;
1665
1666         /* VFs don't have a default status block */
1667         if (IS_PF(bp)) {
1668                 bp->msix_table[msix_vec].entry = msix_vec;
1669                 BNX2X_DEV_INFO("msix_table[0].entry = %d (slowpath)\n",
1670                                bp->msix_table[0].entry);
1671                 msix_vec++;
1672         }
1673
1674         /* Cnic requires an msix vector for itself */
1675         if (CNIC_SUPPORT(bp)) {
1676                 bp->msix_table[msix_vec].entry = msix_vec;
1677                 BNX2X_DEV_INFO("msix_table[%d].entry = %d (CNIC)\n",
1678                                msix_vec, bp->msix_table[msix_vec].entry);
1679                 msix_vec++;
1680         }
1681
1682         /* We need separate vectors for ETH queues only (not FCoE) */
1683         for_each_eth_queue(bp, i) {
1684                 bp->msix_table[msix_vec].entry = msix_vec;
1685                 BNX2X_DEV_INFO("msix_table[%d].entry = %d (fastpath #%u)\n",
1686                                msix_vec, msix_vec, i);
1687                 msix_vec++;
1688         }
1689
1690         DP(BNX2X_MSG_SP, "about to request enable msix with %d vectors\n",
1691            msix_vec);
1692
1693         rc = pci_enable_msix_range(bp->pdev, &bp->msix_table[0],
1694                                    BNX2X_MIN_MSIX_VEC_CNT(bp), msix_vec);
1695         /*
1696          * reconfigure number of tx/rx queues according to available
1697          * MSI-X vectors
1698          */
1699         if (rc == -ENOSPC) {
1700                 /* Get by with single vector */
1701                 rc = pci_enable_msix_range(bp->pdev, &bp->msix_table[0], 1, 1);
1702                 if (rc < 0) {
1703                         BNX2X_DEV_INFO("Single MSI-X is not attainable rc %d\n",
1704                                        rc);
1705                         goto no_msix;
1706                 }
1707
1708                 BNX2X_DEV_INFO("Using single MSI-X vector\n");
1709                 bp->flags |= USING_SINGLE_MSIX_FLAG;
1710
1711                 BNX2X_DEV_INFO("set number of queues to 1\n");
1712                 bp->num_ethernet_queues = 1;
1713                 bp->num_queues = bp->num_ethernet_queues + bp->num_cnic_queues;
1714         } else if (rc < 0) {
1715                 BNX2X_DEV_INFO("MSI-X is not attainable rc %d\n", rc);
1716                 goto no_msix;
1717         } else if (rc < msix_vec) {
1718                 /* how less vectors we will have? */
1719                 int diff = msix_vec - rc;
1720
1721                 BNX2X_DEV_INFO("Trying to use less MSI-X vectors: %d\n", rc);
1722
1723                 /*
1724                  * decrease number of queues by number of unallocated entries
1725                  */
1726                 bp->num_ethernet_queues -= diff;
1727                 bp->num_queues = bp->num_ethernet_queues + bp->num_cnic_queues;
1728
1729                 BNX2X_DEV_INFO("New queue configuration set: %d\n",
1730                                bp->num_queues);
1731         }
1732
1733         bp->flags |= USING_MSIX_FLAG;
1734
1735         return 0;
1736
1737 no_msix:
1738         /* fall to INTx if not enough memory */
1739         if (rc == -ENOMEM)
1740                 bp->flags |= DISABLE_MSI_FLAG;
1741
1742         return rc;
1743 }
1744
1745 static int bnx2x_req_msix_irqs(struct bnx2x *bp)
1746 {
1747         int i, rc, offset = 0;
1748
1749         /* no default status block for vf */
1750         if (IS_PF(bp)) {
1751                 rc = request_irq(bp->msix_table[offset++].vector,
1752                                  bnx2x_msix_sp_int, 0,
1753                                  bp->dev->name, bp->dev);
1754                 if (rc) {
1755                         BNX2X_ERR("request sp irq failed\n");
1756                         return -EBUSY;
1757                 }
1758         }
1759
1760         if (CNIC_SUPPORT(bp))
1761                 offset++;
1762
1763         for_each_eth_queue(bp, i) {
1764                 struct bnx2x_fastpath *fp = &bp->fp[i];
1765                 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
1766                          bp->dev->name, i);
1767
1768                 rc = request_irq(bp->msix_table[offset].vector,
1769                                  bnx2x_msix_fp_int, 0, fp->name, fp);
1770                 if (rc) {
1771                         BNX2X_ERR("request fp #%d irq (%d) failed  rc %d\n", i,
1772                               bp->msix_table[offset].vector, rc);
1773                         bnx2x_free_msix_irqs(bp, offset);
1774                         return -EBUSY;
1775                 }
1776
1777                 offset++;
1778         }
1779
1780         i = BNX2X_NUM_ETH_QUEUES(bp);
1781         if (IS_PF(bp)) {
1782                 offset = 1 + CNIC_SUPPORT(bp);
1783                 netdev_info(bp->dev,
1784                             "using MSI-X  IRQs: sp %d  fp[%d] %d ... fp[%d] %d\n",
1785                             bp->msix_table[0].vector,
1786                             0, bp->msix_table[offset].vector,
1787                             i - 1, bp->msix_table[offset + i - 1].vector);
1788         } else {
1789                 offset = CNIC_SUPPORT(bp);
1790                 netdev_info(bp->dev,
1791                             "using MSI-X  IRQs: fp[%d] %d ... fp[%d] %d\n",
1792                             0, bp->msix_table[offset].vector,
1793                             i - 1, bp->msix_table[offset + i - 1].vector);
1794         }
1795         return 0;
1796 }
1797
1798 int bnx2x_enable_msi(struct bnx2x *bp)
1799 {
1800         int rc;
1801
1802         rc = pci_enable_msi(bp->pdev);
1803         if (rc) {
1804                 BNX2X_DEV_INFO("MSI is not attainable\n");
1805                 return -1;
1806         }
1807         bp->flags |= USING_MSI_FLAG;
1808
1809         return 0;
1810 }
1811
1812 static int bnx2x_req_irq(struct bnx2x *bp)
1813 {
1814         unsigned long flags;
1815         unsigned int irq;
1816
1817         if (bp->flags & (USING_MSI_FLAG | USING_MSIX_FLAG))
1818                 flags = 0;
1819         else
1820                 flags = IRQF_SHARED;
1821
1822         if (bp->flags & USING_MSIX_FLAG)
1823                 irq = bp->msix_table[0].vector;
1824         else
1825                 irq = bp->pdev->irq;
1826
1827         return request_irq(irq, bnx2x_interrupt, flags, bp->dev->name, bp->dev);
1828 }
1829
1830 static int bnx2x_setup_irqs(struct bnx2x *bp)
1831 {
1832         int rc = 0;
1833         if (bp->flags & USING_MSIX_FLAG &&
1834             !(bp->flags & USING_SINGLE_MSIX_FLAG)) {
1835                 rc = bnx2x_req_msix_irqs(bp);
1836                 if (rc)
1837                         return rc;
1838         } else {
1839                 rc = bnx2x_req_irq(bp);
1840                 if (rc) {
1841                         BNX2X_ERR("IRQ request failed  rc %d, aborting\n", rc);
1842                         return rc;
1843                 }
1844                 if (bp->flags & USING_MSI_FLAG) {
1845                         bp->dev->irq = bp->pdev->irq;
1846                         netdev_info(bp->dev, "using MSI IRQ %d\n",
1847                                     bp->dev->irq);
1848                 }
1849                 if (bp->flags & USING_MSIX_FLAG) {
1850                         bp->dev->irq = bp->msix_table[0].vector;
1851                         netdev_info(bp->dev, "using MSIX IRQ %d\n",
1852                                     bp->dev->irq);
1853                 }
1854         }
1855
1856         return 0;
1857 }
1858
1859 static void bnx2x_napi_enable_cnic(struct bnx2x *bp)
1860 {
1861         int i;
1862
1863         for_each_rx_queue_cnic(bp, i) {
1864                 napi_enable(&bnx2x_fp(bp, i, napi));
1865         }
1866 }
1867
1868 static void bnx2x_napi_enable(struct bnx2x *bp)
1869 {
1870         int i;
1871
1872         for_each_eth_queue(bp, i) {
1873                 napi_enable(&bnx2x_fp(bp, i, napi));
1874         }
1875 }
1876
1877 static void bnx2x_napi_disable_cnic(struct bnx2x *bp)
1878 {
1879         int i;
1880
1881         for_each_rx_queue_cnic(bp, i) {
1882                 napi_disable(&bnx2x_fp(bp, i, napi));
1883         }
1884 }
1885
1886 static void bnx2x_napi_disable(struct bnx2x *bp)
1887 {
1888         int i;
1889
1890         for_each_eth_queue(bp, i) {
1891                 napi_disable(&bnx2x_fp(bp, i, napi));
1892         }
1893 }
1894
1895 void bnx2x_netif_start(struct bnx2x *bp)
1896 {
1897         if (netif_running(bp->dev)) {
1898                 bnx2x_napi_enable(bp);
1899                 if (CNIC_LOADED(bp))
1900                         bnx2x_napi_enable_cnic(bp);
1901                 bnx2x_int_enable(bp);
1902                 if (bp->state == BNX2X_STATE_OPEN)
1903                         netif_tx_wake_all_queues(bp->dev);
1904         }
1905 }
1906
1907 void bnx2x_netif_stop(struct bnx2x *bp, int disable_hw)
1908 {
1909         bnx2x_int_disable_sync(bp, disable_hw);
1910         bnx2x_napi_disable(bp);
1911         if (CNIC_LOADED(bp))
1912                 bnx2x_napi_disable_cnic(bp);
1913 }
1914
1915 u16 bnx2x_select_queue(struct net_device *dev, struct sk_buff *skb,
1916                        struct net_device *sb_dev)
1917 {
1918         struct bnx2x *bp = netdev_priv(dev);
1919
1920         if (CNIC_LOADED(bp) && !NO_FCOE(bp)) {
1921                 struct ethhdr *hdr = (struct ethhdr *)skb->data;
1922                 u16 ether_type = ntohs(hdr->h_proto);
1923
1924                 /* Skip VLAN tag if present */
1925                 if (ether_type == ETH_P_8021Q) {
1926                         struct vlan_ethhdr *vhdr =
1927                                 (struct vlan_ethhdr *)skb->data;
1928
1929                         ether_type = ntohs(vhdr->h_vlan_encapsulated_proto);
1930                 }
1931
1932                 /* If ethertype is FCoE or FIP - use FCoE ring */
1933                 if ((ether_type == ETH_P_FCOE) || (ether_type == ETH_P_FIP))
1934                         return bnx2x_fcoe_tx(bp, txq_index);
1935         }
1936
1937         /* select a non-FCoE queue */
1938         return netdev_pick_tx(dev, skb, NULL) %
1939                         (BNX2X_NUM_ETH_QUEUES(bp) * bp->max_cos);
1940 }
1941
1942 void bnx2x_set_num_queues(struct bnx2x *bp)
1943 {
1944         /* RSS queues */
1945         bp->num_ethernet_queues = bnx2x_calc_num_queues(bp);
1946
1947         /* override in STORAGE SD modes */
1948         if (IS_MF_STORAGE_ONLY(bp))
1949                 bp->num_ethernet_queues = 1;
1950
1951         /* Add special queues */
1952         bp->num_cnic_queues = CNIC_SUPPORT(bp); /* For FCOE */
1953         bp->num_queues = bp->num_ethernet_queues + bp->num_cnic_queues;
1954
1955         BNX2X_DEV_INFO("set number of queues to %d\n", bp->num_queues);
1956 }
1957
1958 /**
1959  * bnx2x_set_real_num_queues - configure netdev->real_num_[tx,rx]_queues
1960  *
1961  * @bp:         Driver handle
1962  * @include_cnic: handle cnic case
1963  *
1964  * We currently support for at most 16 Tx queues for each CoS thus we will
1965  * allocate a multiple of 16 for ETH L2 rings according to the value of the
1966  * bp->max_cos.
1967  *
1968  * If there is an FCoE L2 queue the appropriate Tx queue will have the next
1969  * index after all ETH L2 indices.
1970  *
1971  * If the actual number of Tx queues (for each CoS) is less than 16 then there
1972  * will be the holes at the end of each group of 16 ETh L2 indices (0..15,
1973  * 16..31,...) with indices that are not coupled with any real Tx queue.
1974  *
1975  * The proper configuration of skb->queue_mapping is handled by
1976  * bnx2x_select_queue() and __skb_tx_hash().
1977  *
1978  * bnx2x_setup_tc() takes care of the proper TC mappings so that __skb_tx_hash()
1979  * will return a proper Tx index if TC is enabled (netdev->num_tc > 0).
1980  */
1981 static int bnx2x_set_real_num_queues(struct bnx2x *bp, int include_cnic)
1982 {
1983         int rc, tx, rx;
1984
1985         tx = BNX2X_NUM_ETH_QUEUES(bp) * bp->max_cos;
1986         rx = BNX2X_NUM_ETH_QUEUES(bp);
1987
1988 /* account for fcoe queue */
1989         if (include_cnic && !NO_FCOE(bp)) {
1990                 rx++;
1991                 tx++;
1992         }
1993
1994         rc = netif_set_real_num_tx_queues(bp->dev, tx);
1995         if (rc) {
1996                 BNX2X_ERR("Failed to set real number of Tx queues: %d\n", rc);
1997                 return rc;
1998         }
1999         rc = netif_set_real_num_rx_queues(bp->dev, rx);
2000         if (rc) {
2001                 BNX2X_ERR("Failed to set real number of Rx queues: %d\n", rc);
2002                 return rc;
2003         }
2004
2005         DP(NETIF_MSG_IFUP, "Setting real num queues to (tx, rx) (%d, %d)\n",
2006                           tx, rx);
2007
2008         return rc;
2009 }
2010
2011 static void bnx2x_set_rx_buf_size(struct bnx2x *bp)
2012 {
2013         int i;
2014
2015         for_each_queue(bp, i) {
2016                 struct bnx2x_fastpath *fp = &bp->fp[i];
2017                 u32 mtu;
2018
2019                 /* Always use a mini-jumbo MTU for the FCoE L2 ring */
2020                 if (IS_FCOE_IDX(i))
2021                         /*
2022                          * Although there are no IP frames expected to arrive to
2023                          * this ring we still want to add an
2024                          * IP_HEADER_ALIGNMENT_PADDING to prevent a buffer
2025                          * overrun attack.
2026                          */
2027                         mtu = BNX2X_FCOE_MINI_JUMBO_MTU;
2028                 else
2029                         mtu = bp->dev->mtu;
2030                 fp->rx_buf_size = BNX2X_FW_RX_ALIGN_START +
2031                                   IP_HEADER_ALIGNMENT_PADDING +
2032                                   ETH_OVERHEAD +
2033                                   mtu +
2034                                   BNX2X_FW_RX_ALIGN_END;
2035                 fp->rx_buf_size = SKB_DATA_ALIGN(fp->rx_buf_size);
2036                 /* Note : rx_buf_size doesn't take into account NET_SKB_PAD */
2037                 if (fp->rx_buf_size + NET_SKB_PAD <= PAGE_SIZE)
2038                         fp->rx_frag_size = fp->rx_buf_size + NET_SKB_PAD;
2039                 else
2040                         fp->rx_frag_size = 0;
2041         }
2042 }
2043
2044 static int bnx2x_init_rss(struct bnx2x *bp)
2045 {
2046         int i;
2047         u8 num_eth_queues = BNX2X_NUM_ETH_QUEUES(bp);
2048
2049         /* Prepare the initial contents for the indirection table if RSS is
2050          * enabled
2051          */
2052         for (i = 0; i < sizeof(bp->rss_conf_obj.ind_table); i++)
2053                 bp->rss_conf_obj.ind_table[i] =
2054                         bp->fp->cl_id +
2055                         ethtool_rxfh_indir_default(i, num_eth_queues);
2056
2057         /*
2058          * For 57710 and 57711 SEARCHER configuration (rss_keys) is
2059          * per-port, so if explicit configuration is needed , do it only
2060          * for a PMF.
2061          *
2062          * For 57712 and newer on the other hand it's a per-function
2063          * configuration.
2064          */
2065         return bnx2x_config_rss_eth(bp, bp->port.pmf || !CHIP_IS_E1x(bp));
2066 }
2067
2068 int bnx2x_rss(struct bnx2x *bp, struct bnx2x_rss_config_obj *rss_obj,
2069               bool config_hash, bool enable)
2070 {
2071         struct bnx2x_config_rss_params params = {NULL};
2072
2073         /* Although RSS is meaningless when there is a single HW queue we
2074          * still need it enabled in order to have HW Rx hash generated.
2075          *
2076          * if (!is_eth_multi(bp))
2077          *      bp->multi_mode = ETH_RSS_MODE_DISABLED;
2078          */
2079
2080         params.rss_obj = rss_obj;
2081
2082         __set_bit(RAMROD_COMP_WAIT, &params.ramrod_flags);
2083
2084         if (enable) {
2085                 __set_bit(BNX2X_RSS_MODE_REGULAR, &params.rss_flags);
2086
2087                 /* RSS configuration */
2088                 __set_bit(BNX2X_RSS_IPV4, &params.rss_flags);
2089                 __set_bit(BNX2X_RSS_IPV4_TCP, &params.rss_flags);
2090                 __set_bit(BNX2X_RSS_IPV6, &params.rss_flags);
2091                 __set_bit(BNX2X_RSS_IPV6_TCP, &params.rss_flags);
2092                 if (rss_obj->udp_rss_v4)
2093                         __set_bit(BNX2X_RSS_IPV4_UDP, &params.rss_flags);
2094                 if (rss_obj->udp_rss_v6)
2095                         __set_bit(BNX2X_RSS_IPV6_UDP, &params.rss_flags);
2096
2097                 if (!CHIP_IS_E1x(bp)) {
2098                         /* valid only for TUNN_MODE_VXLAN tunnel mode */
2099                         __set_bit(BNX2X_RSS_IPV4_VXLAN, &params.rss_flags);
2100                         __set_bit(BNX2X_RSS_IPV6_VXLAN, &params.rss_flags);
2101
2102                         /* valid only for TUNN_MODE_GRE tunnel mode */
2103                         __set_bit(BNX2X_RSS_TUNN_INNER_HDRS, &params.rss_flags);
2104                 }
2105         } else {
2106                 __set_bit(BNX2X_RSS_MODE_DISABLED, &params.rss_flags);
2107         }
2108
2109         /* Hash bits */
2110         params.rss_result_mask = MULTI_MASK;
2111
2112         memcpy(params.ind_table, rss_obj->ind_table, sizeof(params.ind_table));
2113
2114         if (config_hash) {
2115                 /* RSS keys */
2116                 netdev_rss_key_fill(params.rss_key, T_ETH_RSS_KEY * 4);
2117                 __set_bit(BNX2X_RSS_SET_SRCH, &params.rss_flags);
2118         }
2119
2120         if (IS_PF(bp))
2121                 return bnx2x_config_rss(bp, &params);
2122         else
2123                 return bnx2x_vfpf_config_rss(bp, &params);
2124 }
2125
2126 static int bnx2x_init_hw(struct bnx2x *bp, u32 load_code)
2127 {
2128         struct bnx2x_func_state_params func_params = {NULL};
2129
2130         /* Prepare parameters for function state transitions */
2131         __set_bit(RAMROD_COMP_WAIT, &func_params.ramrod_flags);
2132
2133         func_params.f_obj = &bp->func_obj;
2134         func_params.cmd = BNX2X_F_CMD_HW_INIT;
2135
2136         func_params.params.hw_init.load_phase = load_code;
2137
2138         return bnx2x_func_state_change(bp, &func_params);
2139 }
2140
2141 /*
2142  * Cleans the object that have internal lists without sending
2143  * ramrods. Should be run when interrupts are disabled.
2144  */
2145 void bnx2x_squeeze_objects(struct bnx2x *bp)
2146 {
2147         int rc;
2148         unsigned long ramrod_flags = 0, vlan_mac_flags = 0;
2149         struct bnx2x_mcast_ramrod_params rparam = {NULL};
2150         struct bnx2x_vlan_mac_obj *mac_obj = &bp->sp_objs->mac_obj;
2151
2152         /***************** Cleanup MACs' object first *************************/
2153
2154         /* Wait for completion of requested */
2155         __set_bit(RAMROD_COMP_WAIT, &ramrod_flags);
2156         /* Perform a dry cleanup */
2157         __set_bit(RAMROD_DRV_CLR_ONLY, &ramrod_flags);
2158
2159         /* Clean ETH primary MAC */
2160         __set_bit(BNX2X_ETH_MAC, &vlan_mac_flags);
2161         rc = mac_obj->delete_all(bp, &bp->sp_objs->mac_obj, &vlan_mac_flags,
2162                                  &ramrod_flags);
2163         if (rc != 0)
2164                 BNX2X_ERR("Failed to clean ETH MACs: %d\n", rc);
2165
2166         /* Cleanup UC list */
2167         vlan_mac_flags = 0;
2168         __set_bit(BNX2X_UC_LIST_MAC, &vlan_mac_flags);
2169         rc = mac_obj->delete_all(bp, mac_obj, &vlan_mac_flags,
2170                                  &ramrod_flags);
2171         if (rc != 0)
2172                 BNX2X_ERR("Failed to clean UC list MACs: %d\n", rc);
2173
2174         /***************** Now clean mcast object *****************************/
2175         rparam.mcast_obj = &bp->mcast_obj;
2176         __set_bit(RAMROD_DRV_CLR_ONLY, &rparam.ramrod_flags);
2177
2178         /* Add a DEL command... - Since we're doing a driver cleanup only,
2179          * we take a lock surrounding both the initial send and the CONTs,
2180          * as we don't want a true completion to disrupt us in the middle.
2181          */
2182         netif_addr_lock_bh(bp->dev);
2183         rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_DEL);
2184         if (rc < 0)
2185                 BNX2X_ERR("Failed to add a new DEL command to a multi-cast object: %d\n",
2186                           rc);
2187
2188         /* ...and wait until all pending commands are cleared */
2189         rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_CONT);
2190         while (rc != 0) {
2191                 if (rc < 0) {
2192                         BNX2X_ERR("Failed to clean multi-cast object: %d\n",
2193                                   rc);
2194                         netif_addr_unlock_bh(bp->dev);
2195                         return;
2196                 }
2197
2198                 rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_CONT);
2199         }
2200         netif_addr_unlock_bh(bp->dev);
2201 }
2202
2203 #ifndef BNX2X_STOP_ON_ERROR
2204 #define LOAD_ERROR_EXIT(bp, label) \
2205         do { \
2206                 (bp)->state = BNX2X_STATE_ERROR; \
2207                 goto label; \
2208         } while (0)
2209
2210 #define LOAD_ERROR_EXIT_CNIC(bp, label) \
2211         do { \
2212                 bp->cnic_loaded = false; \
2213                 goto label; \
2214         } while (0)
2215 #else /*BNX2X_STOP_ON_ERROR*/
2216 #define LOAD_ERROR_EXIT(bp, label) \
2217         do { \
2218                 (bp)->state = BNX2X_STATE_ERROR; \
2219                 (bp)->panic = 1; \
2220                 return -EBUSY; \
2221         } while (0)
2222 #define LOAD_ERROR_EXIT_CNIC(bp, label) \
2223         do { \
2224                 bp->cnic_loaded = false; \
2225                 (bp)->panic = 1; \
2226                 return -EBUSY; \
2227         } while (0)
2228 #endif /*BNX2X_STOP_ON_ERROR*/
2229
2230 static void bnx2x_free_fw_stats_mem(struct bnx2x *bp)
2231 {
2232         BNX2X_PCI_FREE(bp->fw_stats, bp->fw_stats_mapping,
2233                        bp->fw_stats_data_sz + bp->fw_stats_req_sz);
2234         return;
2235 }
2236
2237 static int bnx2x_alloc_fw_stats_mem(struct bnx2x *bp)
2238 {
2239         int num_groups, vf_headroom = 0;
2240         int is_fcoe_stats = NO_FCOE(bp) ? 0 : 1;
2241
2242         /* number of queues for statistics is number of eth queues + FCoE */
2243         u8 num_queue_stats = BNX2X_NUM_ETH_QUEUES(bp) + is_fcoe_stats;
2244
2245         /* Total number of FW statistics requests =
2246          * 1 for port stats + 1 for PF stats + potential 2 for FCoE (fcoe proper
2247          * and fcoe l2 queue) stats + num of queues (which includes another 1
2248          * for fcoe l2 queue if applicable)
2249          */
2250         bp->fw_stats_num = 2 + is_fcoe_stats + num_queue_stats;
2251
2252         /* vf stats appear in the request list, but their data is allocated by
2253          * the VFs themselves. We don't include them in the bp->fw_stats_num as
2254          * it is used to determine where to place the vf stats queries in the
2255          * request struct
2256          */
2257         if (IS_SRIOV(bp))
2258                 vf_headroom = bnx2x_vf_headroom(bp);
2259
2260         /* Request is built from stats_query_header and an array of
2261          * stats_query_cmd_group each of which contains
2262          * STATS_QUERY_CMD_COUNT rules. The real number or requests is
2263          * configured in the stats_query_header.
2264          */
2265         num_groups =
2266                 (((bp->fw_stats_num + vf_headroom) / STATS_QUERY_CMD_COUNT) +
2267                  (((bp->fw_stats_num + vf_headroom) % STATS_QUERY_CMD_COUNT) ?
2268                  1 : 0));
2269
2270         DP(BNX2X_MSG_SP, "stats fw_stats_num %d, vf headroom %d, num_groups %d\n",
2271            bp->fw_stats_num, vf_headroom, num_groups);
2272         bp->fw_stats_req_sz = sizeof(struct stats_query_header) +
2273                 num_groups * sizeof(struct stats_query_cmd_group);
2274
2275         /* Data for statistics requests + stats_counter
2276          * stats_counter holds per-STORM counters that are incremented
2277          * when STORM has finished with the current request.
2278          * memory for FCoE offloaded statistics are counted anyway,
2279          * even if they will not be sent.
2280          * VF stats are not accounted for here as the data of VF stats is stored
2281          * in memory allocated by the VF, not here.
2282          */
2283         bp->fw_stats_data_sz = sizeof(struct per_port_stats) +
2284                 sizeof(struct per_pf_stats) +
2285                 sizeof(struct fcoe_statistics_params) +
2286                 sizeof(struct per_queue_stats) * num_queue_stats +
2287                 sizeof(struct stats_counter);
2288
2289         bp->fw_stats = BNX2X_PCI_ALLOC(&bp->fw_stats_mapping,
2290                                        bp->fw_stats_data_sz + bp->fw_stats_req_sz);
2291         if (!bp->fw_stats)
2292                 goto alloc_mem_err;
2293
2294         /* Set shortcuts */
2295         bp->fw_stats_req = (struct bnx2x_fw_stats_req *)bp->fw_stats;
2296         bp->fw_stats_req_mapping = bp->fw_stats_mapping;
2297         bp->fw_stats_data = (struct bnx2x_fw_stats_data *)
2298                 ((u8 *)bp->fw_stats + bp->fw_stats_req_sz);
2299         bp->fw_stats_data_mapping = bp->fw_stats_mapping +
2300                 bp->fw_stats_req_sz;
2301
2302         DP(BNX2X_MSG_SP, "statistics request base address set to %x %x\n",
2303            U64_HI(bp->fw_stats_req_mapping),
2304            U64_LO(bp->fw_stats_req_mapping));
2305         DP(BNX2X_MSG_SP, "statistics data base address set to %x %x\n",
2306            U64_HI(bp->fw_stats_data_mapping),
2307            U64_LO(bp->fw_stats_data_mapping));
2308         return 0;
2309
2310 alloc_mem_err:
2311         bnx2x_free_fw_stats_mem(bp);
2312         BNX2X_ERR("Can't allocate FW stats memory\n");
2313         return -ENOMEM;
2314 }
2315
2316 /* send load request to mcp and analyze response */
2317 static int bnx2x_nic_load_request(struct bnx2x *bp, u32 *load_code)
2318 {
2319         u32 param;
2320
2321         /* init fw_seq */
2322         bp->fw_seq =
2323                 (SHMEM_RD(bp, func_mb[BP_FW_MB_IDX(bp)].drv_mb_header) &
2324                  DRV_MSG_SEQ_NUMBER_MASK);
2325         BNX2X_DEV_INFO("fw_seq 0x%08x\n", bp->fw_seq);
2326
2327         /* Get current FW pulse sequence */
2328         bp->fw_drv_pulse_wr_seq =
2329                 (SHMEM_RD(bp, func_mb[BP_FW_MB_IDX(bp)].drv_pulse_mb) &
2330                  DRV_PULSE_SEQ_MASK);
2331         BNX2X_DEV_INFO("drv_pulse 0x%x\n", bp->fw_drv_pulse_wr_seq);
2332
2333         param = DRV_MSG_CODE_LOAD_REQ_WITH_LFA;
2334
2335         if (IS_MF_SD(bp) && bnx2x_port_after_undi(bp))
2336                 param |= DRV_MSG_CODE_LOAD_REQ_FORCE_LFA;
2337
2338         /* load request */
2339         (*load_code) = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_REQ, param);
2340
2341         /* if mcp fails to respond we must abort */
2342         if (!(*load_code)) {
2343                 BNX2X_ERR("MCP response failure, aborting\n");
2344                 return -EBUSY;
2345         }
2346
2347         /* If mcp refused (e.g. other port is in diagnostic mode) we
2348          * must abort
2349          */
2350         if ((*load_code) == FW_MSG_CODE_DRV_LOAD_REFUSED) {
2351                 BNX2X_ERR("MCP refused load request, aborting\n");
2352                 return -EBUSY;
2353         }
2354         return 0;
2355 }
2356
2357 /* check whether another PF has already loaded FW to chip. In
2358  * virtualized environments a pf from another VM may have already
2359  * initialized the device including loading FW
2360  */
2361 int bnx2x_compare_fw_ver(struct bnx2x *bp, u32 load_code, bool print_err)
2362 {
2363         /* is another pf loaded on this engine? */
2364         if (load_code != FW_MSG_CODE_DRV_LOAD_COMMON_CHIP &&
2365             load_code != FW_MSG_CODE_DRV_LOAD_COMMON) {
2366                 /* build my FW version dword */
2367                 u32 my_fw = (BCM_5710_FW_MAJOR_VERSION) +
2368                         (BCM_5710_FW_MINOR_VERSION << 8) +
2369                         (BCM_5710_FW_REVISION_VERSION << 16) +
2370                         (BCM_5710_FW_ENGINEERING_VERSION << 24);
2371
2372                 /* read loaded FW from chip */
2373                 u32 loaded_fw = REG_RD(bp, XSEM_REG_PRAM);
2374
2375                 DP(BNX2X_MSG_SP, "loaded fw %x, my fw %x\n",
2376                    loaded_fw, my_fw);
2377
2378                 /* abort nic load if version mismatch */
2379                 if (my_fw != loaded_fw) {
2380                         if (print_err)
2381                                 BNX2X_ERR("bnx2x with FW %x was already loaded which mismatches my %x FW. Aborting\n",
2382                                           loaded_fw, my_fw);
2383                         else
2384                                 BNX2X_DEV_INFO("bnx2x with FW %x was already loaded which mismatches my %x FW, possibly due to MF UNDI\n",
2385                                                loaded_fw, my_fw);
2386                         return -EBUSY;
2387                 }
2388         }
2389         return 0;
2390 }
2391
2392 /* returns the "mcp load_code" according to global load_count array */
2393 static int bnx2x_nic_load_no_mcp(struct bnx2x *bp, int port)
2394 {
2395         int path = BP_PATH(bp);
2396
2397         DP(NETIF_MSG_IFUP, "NO MCP - load counts[%d]      %d, %d, %d\n",
2398            path, bnx2x_load_count[path][0], bnx2x_load_count[path][1],
2399            bnx2x_load_count[path][2]);
2400         bnx2x_load_count[path][0]++;
2401         bnx2x_load_count[path][1 + port]++;
2402         DP(NETIF_MSG_IFUP, "NO MCP - new load counts[%d]  %d, %d, %d\n",
2403            path, bnx2x_load_count[path][0], bnx2x_load_count[path][1],
2404            bnx2x_load_count[path][2]);
2405         if (bnx2x_load_count[path][0] == 1)
2406                 return FW_MSG_CODE_DRV_LOAD_COMMON;
2407         else if (bnx2x_load_count[path][1 + port] == 1)
2408                 return FW_MSG_CODE_DRV_LOAD_PORT;
2409         else
2410                 return FW_MSG_CODE_DRV_LOAD_FUNCTION;
2411 }
2412
2413 /* mark PMF if applicable */
2414 static void bnx2x_nic_load_pmf(struct bnx2x *bp, u32 load_code)
2415 {
2416         if ((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) ||
2417             (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP) ||
2418             (load_code == FW_MSG_CODE_DRV_LOAD_PORT)) {
2419                 bp->port.pmf = 1;
2420                 /* We need the barrier to ensure the ordering between the
2421                  * writing to bp->port.pmf here and reading it from the
2422                  * bnx2x_periodic_task().
2423                  */
2424                 smp_mb();
2425         } else {
2426                 bp->port.pmf = 0;
2427         }
2428
2429         DP(NETIF_MSG_LINK, "pmf %d\n", bp->port.pmf);
2430 }
2431
2432 static void bnx2x_nic_load_afex_dcc(struct bnx2x *bp, int load_code)
2433 {
2434         if (((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) ||
2435              (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP)) &&
2436             (bp->common.shmem2_base)) {
2437                 if (SHMEM2_HAS(bp, dcc_support))
2438                         SHMEM2_WR(bp, dcc_support,
2439                                   (SHMEM_DCC_SUPPORT_DISABLE_ENABLE_PF_TLV |
2440                                    SHMEM_DCC_SUPPORT_BANDWIDTH_ALLOCATION_TLV));
2441                 if (SHMEM2_HAS(bp, afex_driver_support))
2442                         SHMEM2_WR(bp, afex_driver_support,
2443                                   SHMEM_AFEX_SUPPORTED_VERSION_ONE);
2444         }
2445
2446         /* Set AFEX default VLAN tag to an invalid value */
2447         bp->afex_def_vlan_tag = -1;
2448 }
2449
2450 /**
2451  * bnx2x_bz_fp - zero content of the fastpath structure.
2452  *
2453  * @bp:         driver handle
2454  * @index:      fastpath index to be zeroed
2455  *
2456  * Makes sure the contents of the bp->fp[index].napi is kept
2457  * intact.
2458  */
2459 static void bnx2x_bz_fp(struct bnx2x *bp, int index)
2460 {
2461         struct bnx2x_fastpath *fp = &bp->fp[index];
2462         int cos;
2463         struct napi_struct orig_napi = fp->napi;
2464         struct bnx2x_agg_info *orig_tpa_info = fp->tpa_info;
2465
2466         /* bzero bnx2x_fastpath contents */
2467         if (fp->tpa_info)
2468                 memset(fp->tpa_info, 0, ETH_MAX_AGGREGATION_QUEUES_E1H_E2 *
2469                        sizeof(struct bnx2x_agg_info));
2470         memset(fp, 0, sizeof(*fp));
2471
2472         /* Restore the NAPI object as it has been already initialized */
2473         fp->napi = orig_napi;
2474         fp->tpa_info = orig_tpa_info;
2475         fp->bp = bp;
2476         fp->index = index;
2477         if (IS_ETH_FP(fp))
2478                 fp->max_cos = bp->max_cos;
2479         else
2480                 /* Special queues support only one CoS */
2481                 fp->max_cos = 1;
2482
2483         /* Init txdata pointers */
2484         if (IS_FCOE_FP(fp))
2485                 fp->txdata_ptr[0] = &bp->bnx2x_txq[FCOE_TXQ_IDX(bp)];
2486         if (IS_ETH_FP(fp))
2487                 for_each_cos_in_tx_queue(fp, cos)
2488                         fp->txdata_ptr[cos] = &bp->bnx2x_txq[cos *
2489                                 BNX2X_NUM_ETH_QUEUES(bp) + index];
2490
2491         /* set the tpa flag for each queue. The tpa flag determines the queue
2492          * minimal size so it must be set prior to queue memory allocation
2493          */
2494         if (bp->dev->features & NETIF_F_LRO)
2495                 fp->mode = TPA_MODE_LRO;
2496         else if (bp->dev->features & NETIF_F_GRO_HW)
2497                 fp->mode = TPA_MODE_GRO;
2498         else
2499                 fp->mode = TPA_MODE_DISABLED;
2500
2501         /* We don't want TPA if it's disabled in bp
2502          * or if this is an FCoE L2 ring.
2503          */
2504         if (bp->disable_tpa || IS_FCOE_FP(fp))
2505                 fp->mode = TPA_MODE_DISABLED;
2506 }
2507
2508 void bnx2x_set_os_driver_state(struct bnx2x *bp, u32 state)
2509 {
2510         u32 cur;
2511
2512         if (!IS_MF_BD(bp) || !SHMEM2_HAS(bp, os_driver_state) || IS_VF(bp))
2513                 return;
2514
2515         cur = SHMEM2_RD(bp, os_driver_state[BP_FW_MB_IDX(bp)]);
2516         DP(NETIF_MSG_IFUP, "Driver state %08x-->%08x\n",
2517            cur, state);
2518
2519         SHMEM2_WR(bp, os_driver_state[BP_FW_MB_IDX(bp)], state);
2520 }
2521
2522 int bnx2x_load_cnic(struct bnx2x *bp)
2523 {
2524         int i, rc, port = BP_PORT(bp);
2525
2526         DP(NETIF_MSG_IFUP, "Starting CNIC-related load\n");
2527
2528         mutex_init(&bp->cnic_mutex);
2529
2530         if (IS_PF(bp)) {
2531                 rc = bnx2x_alloc_mem_cnic(bp);
2532                 if (rc) {
2533                         BNX2X_ERR("Unable to allocate bp memory for cnic\n");
2534                         LOAD_ERROR_EXIT_CNIC(bp, load_error_cnic0);
2535                 }
2536         }
2537
2538         rc = bnx2x_alloc_fp_mem_cnic(bp);
2539         if (rc) {
2540                 BNX2X_ERR("Unable to allocate memory for cnic fps\n");
2541                 LOAD_ERROR_EXIT_CNIC(bp, load_error_cnic0);
2542         }
2543
2544         /* Update the number of queues with the cnic queues */
2545         rc = bnx2x_set_real_num_queues(bp, 1);
2546         if (rc) {
2547                 BNX2X_ERR("Unable to set real_num_queues including cnic\n");
2548                 LOAD_ERROR_EXIT_CNIC(bp, load_error_cnic0);
2549         }
2550
2551         /* Add all CNIC NAPI objects */
2552         bnx2x_add_all_napi_cnic(bp);
2553         DP(NETIF_MSG_IFUP, "cnic napi added\n");
2554         bnx2x_napi_enable_cnic(bp);
2555
2556         rc = bnx2x_init_hw_func_cnic(bp);
2557         if (rc)
2558                 LOAD_ERROR_EXIT_CNIC(bp, load_error_cnic1);
2559
2560         bnx2x_nic_init_cnic(bp);
2561
2562         if (IS_PF(bp)) {
2563                 /* Enable Timer scan */
2564                 REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + port*4, 1);
2565
2566                 /* setup cnic queues */
2567                 for_each_cnic_queue(bp, i) {
2568                         rc = bnx2x_setup_queue(bp, &bp->fp[i], 0);
2569                         if (rc) {
2570                                 BNX2X_ERR("Queue setup failed\n");
2571                                 LOAD_ERROR_EXIT(bp, load_error_cnic2);
2572                         }
2573                 }
2574         }
2575
2576         /* Initialize Rx filter. */
2577         bnx2x_set_rx_mode_inner(bp);
2578
2579         /* re-read iscsi info */
2580         bnx2x_get_iscsi_info(bp);
2581         bnx2x_setup_cnic_irq_info(bp);
2582         bnx2x_setup_cnic_info(bp);
2583         bp->cnic_loaded = true;
2584         if (bp->state == BNX2X_STATE_OPEN)
2585                 bnx2x_cnic_notify(bp, CNIC_CTL_START_CMD);
2586
2587         DP(NETIF_MSG_IFUP, "Ending successfully CNIC-related load\n");
2588
2589         return 0;
2590
2591 #ifndef BNX2X_STOP_ON_ERROR
2592 load_error_cnic2:
2593         /* Disable Timer scan */
2594         REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + port*4, 0);
2595
2596 load_error_cnic1:
2597         bnx2x_napi_disable_cnic(bp);
2598         /* Update the number of queues without the cnic queues */
2599         if (bnx2x_set_real_num_queues(bp, 0))
2600                 BNX2X_ERR("Unable to set real_num_queues not including cnic\n");
2601 load_error_cnic0:
2602         BNX2X_ERR("CNIC-related load failed\n");
2603         bnx2x_free_fp_mem_cnic(bp);
2604         bnx2x_free_mem_cnic(bp);
2605         return rc;
2606 #endif /* ! BNX2X_STOP_ON_ERROR */
2607 }
2608
2609 /* must be called with rtnl_lock */
2610 int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
2611 {
2612         int port = BP_PORT(bp);
2613         int i, rc = 0, load_code = 0;
2614
2615         DP(NETIF_MSG_IFUP, "Starting NIC load\n");
2616         DP(NETIF_MSG_IFUP,
2617            "CNIC is %s\n", CNIC_ENABLED(bp) ? "enabled" : "disabled");
2618
2619 #ifdef BNX2X_STOP_ON_ERROR
2620         if (unlikely(bp->panic)) {
2621                 BNX2X_ERR("Can't load NIC when there is panic\n");
2622                 return -EPERM;
2623         }
2624 #endif
2625
2626         bp->state = BNX2X_STATE_OPENING_WAIT4_LOAD;
2627
2628         /* zero the structure w/o any lock, before SP handler is initialized */
2629         memset(&bp->last_reported_link, 0, sizeof(bp->last_reported_link));
2630         __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
2631                 &bp->last_reported_link.link_report_flags);
2632
2633         if (IS_PF(bp))
2634                 /* must be called before memory allocation and HW init */
2635                 bnx2x_ilt_set_info(bp);
2636
2637         /*
2638          * Zero fastpath structures preserving invariants like napi, which are
2639          * allocated only once, fp index, max_cos, bp pointer.
2640          * Also set fp->mode and txdata_ptr.
2641          */
2642         DP(NETIF_MSG_IFUP, "num queues: %d", bp->num_queues);
2643         for_each_queue(bp, i)
2644                 bnx2x_bz_fp(bp, i);
2645         memset(bp->bnx2x_txq, 0, (BNX2X_MAX_RSS_COUNT(bp) * BNX2X_MULTI_TX_COS +
2646                                   bp->num_cnic_queues) *
2647                                   sizeof(struct bnx2x_fp_txdata));
2648
2649         bp->fcoe_init = false;
2650
2651         /* Set the receive queues buffer size */
2652         bnx2x_set_rx_buf_size(bp);
2653
2654         if (IS_PF(bp)) {
2655                 rc = bnx2x_alloc_mem(bp);
2656                 if (rc) {
2657                         BNX2X_ERR("Unable to allocate bp memory\n");
2658                         return rc;
2659                 }
2660         }
2661
2662         /* need to be done after alloc mem, since it's self adjusting to amount
2663          * of memory available for RSS queues
2664          */
2665         rc = bnx2x_alloc_fp_mem(bp);
2666         if (rc) {
2667                 BNX2X_ERR("Unable to allocate memory for fps\n");
2668                 LOAD_ERROR_EXIT(bp, load_error0);
2669         }
2670
2671         /* Allocated memory for FW statistics  */
2672         if (bnx2x_alloc_fw_stats_mem(bp))
2673                 LOAD_ERROR_EXIT(bp, load_error0);
2674
2675         /* request pf to initialize status blocks */
2676         if (IS_VF(bp)) {
2677                 rc = bnx2x_vfpf_init(bp);
2678                 if (rc)
2679                         LOAD_ERROR_EXIT(bp, load_error0);
2680         }
2681
2682         /* As long as bnx2x_alloc_mem() may possibly update
2683          * bp->num_queues, bnx2x_set_real_num_queues() should always
2684          * come after it. At this stage cnic queues are not counted.
2685          */
2686         rc = bnx2x_set_real_num_queues(bp, 0);
2687         if (rc) {
2688                 BNX2X_ERR("Unable to set real_num_queues\n");
2689                 LOAD_ERROR_EXIT(bp, load_error0);
2690         }
2691
2692         /* configure multi cos mappings in kernel.
2693          * this configuration may be overridden by a multi class queue
2694          * discipline or by a dcbx negotiation result.
2695          */
2696         bnx2x_setup_tc(bp->dev, bp->max_cos);
2697
2698         /* Add all NAPI objects */
2699         bnx2x_add_all_napi(bp);
2700         DP(NETIF_MSG_IFUP, "napi added\n");
2701         bnx2x_napi_enable(bp);
2702
2703         if (IS_PF(bp)) {
2704                 /* set pf load just before approaching the MCP */
2705                 bnx2x_set_pf_load(bp);
2706
2707                 /* if mcp exists send load request and analyze response */
2708                 if (!BP_NOMCP(bp)) {
2709                         /* attempt to load pf */
2710                         rc = bnx2x_nic_load_request(bp, &load_code);
2711                         if (rc)
2712                                 LOAD_ERROR_EXIT(bp, load_error1);
2713
2714                         /* what did mcp say? */
2715                         rc = bnx2x_compare_fw_ver(bp, load_code, true);
2716                         if (rc) {
2717                                 bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2718                                 LOAD_ERROR_EXIT(bp, load_error2);
2719                         }
2720                 } else {
2721                         load_code = bnx2x_nic_load_no_mcp(bp, port);
2722                 }
2723
2724                 /* mark pmf if applicable */
2725                 bnx2x_nic_load_pmf(bp, load_code);
2726
2727                 /* Init Function state controlling object */
2728                 bnx2x__init_func_obj(bp);
2729
2730                 /* Initialize HW */
2731                 rc = bnx2x_init_hw(bp, load_code);
2732                 if (rc) {
2733                         BNX2X_ERR("HW init failed, aborting\n");
2734                         bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2735                         LOAD_ERROR_EXIT(bp, load_error2);
2736                 }
2737         }
2738
2739         bnx2x_pre_irq_nic_init(bp);
2740
2741         /* Connect to IRQs */
2742         rc = bnx2x_setup_irqs(bp);
2743         if (rc) {
2744                 BNX2X_ERR("setup irqs failed\n");
2745                 if (IS_PF(bp))
2746                         bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2747                 LOAD_ERROR_EXIT(bp, load_error2);
2748         }
2749
2750         /* Init per-function objects */
2751         if (IS_PF(bp)) {
2752                 /* Setup NIC internals and enable interrupts */
2753                 bnx2x_post_irq_nic_init(bp, load_code);
2754
2755                 bnx2x_init_bp_objs(bp);
2756                 bnx2x_iov_nic_init(bp);
2757
2758                 /* Set AFEX default VLAN tag to an invalid value */
2759                 bp->afex_def_vlan_tag = -1;
2760                 bnx2x_nic_load_afex_dcc(bp, load_code);
2761                 bp->state = BNX2X_STATE_OPENING_WAIT4_PORT;
2762                 rc = bnx2x_func_start(bp);
2763                 if (rc) {
2764                         BNX2X_ERR("Function start failed!\n");
2765                         bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2766
2767                         LOAD_ERROR_EXIT(bp, load_error3);
2768                 }
2769
2770                 /* Send LOAD_DONE command to MCP */
2771                 if (!BP_NOMCP(bp)) {
2772                         load_code = bnx2x_fw_command(bp,
2773                                                      DRV_MSG_CODE_LOAD_DONE, 0);
2774                         if (!load_code) {
2775                                 BNX2X_ERR("MCP response failure, aborting\n");
2776                                 rc = -EBUSY;
2777                                 LOAD_ERROR_EXIT(bp, load_error3);
2778                         }
2779                 }
2780
2781                 /* initialize FW coalescing state machines in RAM */
2782                 bnx2x_update_coalesce(bp);
2783         }
2784
2785         /* setup the leading queue */
2786         rc = bnx2x_setup_leading(bp);
2787         if (rc) {
2788                 BNX2X_ERR("Setup leading failed!\n");
2789                 LOAD_ERROR_EXIT(bp, load_error3);
2790         }
2791
2792         /* set up the rest of the queues */
2793         for_each_nondefault_eth_queue(bp, i) {
2794                 if (IS_PF(bp))
2795                         rc = bnx2x_setup_queue(bp, &bp->fp[i], false);
2796                 else /* VF */
2797                         rc = bnx2x_vfpf_setup_q(bp, &bp->fp[i], false);
2798                 if (rc) {
2799                         BNX2X_ERR("Queue %d setup failed\n", i);
2800                         LOAD_ERROR_EXIT(bp, load_error3);
2801                 }
2802         }
2803
2804         /* setup rss */
2805         rc = bnx2x_init_rss(bp);
2806         if (rc) {
2807                 BNX2X_ERR("PF RSS init failed\n");
2808                 LOAD_ERROR_EXIT(bp, load_error3);
2809         }
2810
2811         /* Now when Clients are configured we are ready to work */
2812         bp->state = BNX2X_STATE_OPEN;
2813
2814         /* Configure a ucast MAC */
2815         if (IS_PF(bp))
2816                 rc = bnx2x_set_eth_mac(bp, true);
2817         else /* vf */
2818                 rc = bnx2x_vfpf_config_mac(bp, bp->dev->dev_addr, bp->fp->index,
2819                                            true);
2820         if (rc) {
2821                 BNX2X_ERR("Setting Ethernet MAC failed\n");
2822                 LOAD_ERROR_EXIT(bp, load_error3);
2823         }
2824
2825         if (IS_PF(bp) && bp->pending_max) {
2826                 bnx2x_update_max_mf_config(bp, bp->pending_max);
2827                 bp->pending_max = 0;
2828         }
2829
2830         bp->force_link_down = false;
2831         if (bp->port.pmf) {
2832                 rc = bnx2x_initial_phy_init(bp, load_mode);
2833                 if (rc)
2834                         LOAD_ERROR_EXIT(bp, load_error3);
2835         }
2836         bp->link_params.feature_config_flags &= ~FEATURE_CONFIG_BOOT_FROM_SAN;
2837
2838         /* Start fast path */
2839
2840         /* Re-configure vlan filters */
2841         rc = bnx2x_vlan_reconfigure_vid(bp);
2842         if (rc)
2843                 LOAD_ERROR_EXIT(bp, load_error3);
2844
2845         /* Initialize Rx filter. */
2846         bnx2x_set_rx_mode_inner(bp);
2847
2848         if (bp->flags & PTP_SUPPORTED) {
2849                 bnx2x_register_phc(bp);
2850                 bnx2x_init_ptp(bp);
2851                 bnx2x_configure_ptp_filters(bp);
2852         }
2853         /* Start Tx */
2854         switch (load_mode) {
2855         case LOAD_NORMAL:
2856                 /* Tx queue should be only re-enabled */
2857                 netif_tx_wake_all_queues(bp->dev);
2858                 break;
2859
2860         case LOAD_OPEN:
2861                 netif_tx_start_all_queues(bp->dev);
2862                 smp_mb__after_atomic();
2863                 break;
2864
2865         case LOAD_DIAG:
2866         case LOAD_LOOPBACK_EXT:
2867                 bp->state = BNX2X_STATE_DIAG;
2868                 break;
2869
2870         default:
2871                 break;
2872         }
2873
2874         if (bp->port.pmf)
2875                 bnx2x_update_drv_flags(bp, 1 << DRV_FLAGS_PORT_MASK, 0);
2876         else
2877                 bnx2x__link_status_update(bp);
2878
2879         /* start the timer */
2880         mod_timer(&bp->timer, jiffies + bp->current_interval);
2881
2882         if (CNIC_ENABLED(bp))
2883                 bnx2x_load_cnic(bp);
2884
2885         if (IS_PF(bp))
2886                 bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_GET_DRV_VERSION, 0);
2887
2888         if (IS_PF(bp) && SHMEM2_HAS(bp, drv_capabilities_flag)) {
2889                 /* mark driver is loaded in shmem2 */
2890                 u32 val;
2891                 val = SHMEM2_RD(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)]);
2892                 val &= ~DRV_FLAGS_MTU_MASK;
2893                 val |= (bp->dev->mtu << DRV_FLAGS_MTU_SHIFT);
2894                 SHMEM2_WR(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)],
2895                           val | DRV_FLAGS_CAPABILITIES_LOADED_SUPPORTED |
2896                           DRV_FLAGS_CAPABILITIES_LOADED_L2);
2897         }
2898
2899         /* Wait for all pending SP commands to complete */
2900         if (IS_PF(bp) && !bnx2x_wait_sp_comp(bp, ~0x0UL)) {
2901                 BNX2X_ERR("Timeout waiting for SP elements to complete\n");
2902                 bnx2x_nic_unload(bp, UNLOAD_CLOSE, false);
2903                 return -EBUSY;
2904         }
2905
2906         /* Update driver data for On-Chip MFW dump. */
2907         if (IS_PF(bp))
2908                 bnx2x_update_mfw_dump(bp);
2909
2910         /* If PMF - send ADMIN DCBX msg to MFW to initiate DCBX FSM */
2911         if (bp->port.pmf && (bp->state != BNX2X_STATE_DIAG))
2912                 bnx2x_dcbx_init(bp, false);
2913
2914         if (!IS_MF_SD_STORAGE_PERSONALITY_ONLY(bp))
2915                 bnx2x_set_os_driver_state(bp, OS_DRIVER_STATE_ACTIVE);
2916
2917         DP(NETIF_MSG_IFUP, "Ending successfully NIC load\n");
2918
2919         return 0;
2920
2921 #ifndef BNX2X_STOP_ON_ERROR
2922 load_error3:
2923         if (IS_PF(bp)) {
2924                 bnx2x_int_disable_sync(bp, 1);
2925
2926                 /* Clean queueable objects */
2927                 bnx2x_squeeze_objects(bp);
2928         }
2929
2930         /* Free SKBs, SGEs, TPA pool and driver internals */
2931         bnx2x_free_skbs(bp);
2932         for_each_rx_queue(bp, i)
2933                 bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
2934
2935         /* Release IRQs */
2936         bnx2x_free_irq(bp);
2937 load_error2:
2938         if (IS_PF(bp) && !BP_NOMCP(bp)) {
2939                 bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP, 0);
2940                 bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE, 0);
2941         }
2942
2943         bp->port.pmf = 0;
2944 load_error1:
2945         bnx2x_napi_disable(bp);
2946         bnx2x_del_all_napi(bp);
2947
2948         /* clear pf_load status, as it was already set */
2949         if (IS_PF(bp))
2950                 bnx2x_clear_pf_load(bp);
2951 load_error0:
2952         bnx2x_free_fw_stats_mem(bp);
2953         bnx2x_free_fp_mem(bp);
2954         bnx2x_free_mem(bp);
2955
2956         return rc;
2957 #endif /* ! BNX2X_STOP_ON_ERROR */
2958 }
2959
2960 int bnx2x_drain_tx_queues(struct bnx2x *bp)
2961 {
2962         u8 rc = 0, cos, i;
2963
2964         /* Wait until tx fastpath tasks complete */
2965         for_each_tx_queue(bp, i) {
2966                 struct bnx2x_fastpath *fp = &bp->fp[i];
2967
2968                 for_each_cos_in_tx_queue(fp, cos)
2969                         rc = bnx2x_clean_tx_queue(bp, fp->txdata_ptr[cos]);
2970                 if (rc)
2971                         return rc;
2972         }
2973         return 0;
2974 }
2975
2976 /* must be called with rtnl_lock */
2977 int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode, bool keep_link)
2978 {
2979         int i;
2980         bool global = false;
2981
2982         DP(NETIF_MSG_IFUP, "Starting NIC unload\n");
2983
2984         if (!IS_MF_SD_STORAGE_PERSONALITY_ONLY(bp))
2985                 bnx2x_set_os_driver_state(bp, OS_DRIVER_STATE_DISABLED);
2986
2987         /* mark driver is unloaded in shmem2 */
2988         if (IS_PF(bp) && SHMEM2_HAS(bp, drv_capabilities_flag)) {
2989                 u32 val;
2990                 val = SHMEM2_RD(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)]);
2991                 SHMEM2_WR(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)],
2992                           val & ~DRV_FLAGS_CAPABILITIES_LOADED_L2);
2993         }
2994
2995         if (IS_PF(bp) && bp->recovery_state != BNX2X_RECOVERY_DONE &&
2996             (bp->state == BNX2X_STATE_CLOSED ||
2997              bp->state == BNX2X_STATE_ERROR)) {
2998                 /* We can get here if the driver has been unloaded
2999                  * during parity error recovery and is either waiting for a
3000                  * leader to complete or for other functions to unload and
3001                  * then ifdown has been issued. In this case we want to
3002                  * unload and let other functions to complete a recovery
3003                  * process.
3004                  */
3005                 bp->recovery_state = BNX2X_RECOVERY_DONE;
3006                 bp->is_leader = 0;
3007                 bnx2x_release_leader_lock(bp);
3008                 smp_mb();
3009
3010                 DP(NETIF_MSG_IFDOWN, "Releasing a leadership...\n");
3011                 BNX2X_ERR("Can't unload in closed or error state\n");
3012                 return -EINVAL;
3013         }
3014
3015         /* Nothing to do during unload if previous bnx2x_nic_load()
3016          * have not completed successfully - all resources are released.
3017          *
3018          * we can get here only after unsuccessful ndo_* callback, during which
3019          * dev->IFF_UP flag is still on.
3020          */
3021         if (bp->state == BNX2X_STATE_CLOSED || bp->state == BNX2X_STATE_ERROR)
3022                 return 0;
3023
3024         /* It's important to set the bp->state to the value different from
3025          * BNX2X_STATE_OPEN and only then stop the Tx. Otherwise bnx2x_tx_int()
3026          * may restart the Tx from the NAPI context (see bnx2x_tx_int()).
3027          */
3028         bp->state = BNX2X_STATE_CLOSING_WAIT4_HALT;
3029         smp_mb();
3030
3031         /* indicate to VFs that the PF is going down */
3032         bnx2x_iov_channel_down(bp);
3033
3034         if (CNIC_LOADED(bp))
3035                 bnx2x_cnic_notify(bp, CNIC_CTL_STOP_CMD);
3036
3037         /* Stop Tx */
3038         bnx2x_tx_disable(bp);
3039         netdev_reset_tc(bp->dev);
3040
3041         bp->rx_mode = BNX2X_RX_MODE_NONE;
3042
3043         del_timer_sync(&bp->timer);
3044
3045         if (IS_PF(bp) && !BP_NOMCP(bp)) {
3046                 /* Set ALWAYS_ALIVE bit in shmem */
3047                 bp->fw_drv_pulse_wr_seq |= DRV_PULSE_ALWAYS_ALIVE;
3048                 bnx2x_drv_pulse(bp);
3049                 bnx2x_stats_handle(bp, STATS_EVENT_STOP);
3050                 bnx2x_save_statistics(bp);
3051         }
3052
3053         /* wait till consumers catch up with producers in all queues.
3054          * If we're recovering, FW can't write to host so no reason
3055          * to wait for the queues to complete all Tx.
3056          */
3057         if (unload_mode != UNLOAD_RECOVERY)
3058                 bnx2x_drain_tx_queues(bp);
3059
3060         /* if VF indicate to PF this function is going down (PF will delete sp
3061          * elements and clear initializations
3062          */
3063         if (IS_VF(bp)) {
3064                 bnx2x_clear_vlan_info(bp);
3065                 bnx2x_vfpf_close_vf(bp);
3066         } else if (unload_mode != UNLOAD_RECOVERY) {
3067                 /* if this is a normal/close unload need to clean up chip*/
3068                 bnx2x_chip_cleanup(bp, unload_mode, keep_link);
3069         } else {
3070                 /* Send the UNLOAD_REQUEST to the MCP */
3071                 bnx2x_send_unload_req(bp, unload_mode);
3072
3073                 /* Prevent transactions to host from the functions on the
3074                  * engine that doesn't reset global blocks in case of global
3075                  * attention once global blocks are reset and gates are opened
3076                  * (the engine which leader will perform the recovery
3077                  * last).
3078                  */
3079                 if (!CHIP_IS_E1x(bp))
3080                         bnx2x_pf_disable(bp);
3081
3082                 /* Disable HW interrupts, NAPI */
3083                 bnx2x_netif_stop(bp, 1);
3084                 /* Delete all NAPI objects */
3085                 bnx2x_del_all_napi(bp);
3086                 if (CNIC_LOADED(bp))
3087                         bnx2x_del_all_napi_cnic(bp);
3088                 /* Release IRQs */
3089                 bnx2x_free_irq(bp);
3090
3091                 /* Report UNLOAD_DONE to MCP */
3092                 bnx2x_send_unload_done(bp, false);
3093         }
3094
3095         /*
3096          * At this stage no more interrupts will arrive so we may safely clean
3097          * the queueable objects here in case they failed to get cleaned so far.
3098          */
3099         if (IS_PF(bp))
3100                 bnx2x_squeeze_objects(bp);
3101
3102         /* There should be no more pending SP commands at this stage */
3103         bp->sp_state = 0;
3104
3105         bp->port.pmf = 0;
3106
3107         /* clear pending work in rtnl task */
3108         bp->sp_rtnl_state = 0;
3109         smp_mb();
3110
3111         /* Free SKBs, SGEs, TPA pool and driver internals */
3112         bnx2x_free_skbs(bp);
3113         if (CNIC_LOADED(bp))
3114                 bnx2x_free_skbs_cnic(bp);
3115         for_each_rx_queue(bp, i)
3116                 bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
3117
3118         bnx2x_free_fp_mem(bp);
3119         if (CNIC_LOADED(bp))
3120                 bnx2x_free_fp_mem_cnic(bp);
3121
3122         if (IS_PF(bp)) {
3123                 if (CNIC_LOADED(bp))
3124                         bnx2x_free_mem_cnic(bp);
3125         }
3126         bnx2x_free_mem(bp);
3127
3128         bp->state = BNX2X_STATE_CLOSED;
3129         bp->cnic_loaded = false;
3130
3131         /* Clear driver version indication in shmem */
3132         if (IS_PF(bp) && !BP_NOMCP(bp))
3133                 bnx2x_update_mng_version(bp);
3134
3135         /* Check if there are pending parity attentions. If there are - set
3136          * RECOVERY_IN_PROGRESS.
3137          */
3138         if (IS_PF(bp) && bnx2x_chk_parity_attn(bp, &global, false)) {
3139                 bnx2x_set_reset_in_progress(bp);
3140
3141                 /* Set RESET_IS_GLOBAL if needed */
3142                 if (global)
3143                         bnx2x_set_reset_global(bp);
3144         }
3145
3146         /* The last driver must disable a "close the gate" if there is no
3147          * parity attention or "process kill" pending.
3148          */
3149         if (IS_PF(bp) &&
3150             !bnx2x_clear_pf_load(bp) &&
3151             bnx2x_reset_is_done(bp, BP_PATH(bp)))
3152                 bnx2x_disable_close_the_gate(bp);
3153
3154         DP(NETIF_MSG_IFUP, "Ending NIC unload\n");
3155
3156         return 0;
3157 }
3158
3159 int bnx2x_set_power_state(struct bnx2x *bp, pci_power_t state)
3160 {
3161         u16 pmcsr;
3162
3163         /* If there is no power capability, silently succeed */
3164         if (!bp->pdev->pm_cap) {
3165                 BNX2X_DEV_INFO("No power capability. Breaking.\n");
3166                 return 0;
3167         }
3168
3169         pci_read_config_word(bp->pdev, bp->pdev->pm_cap + PCI_PM_CTRL, &pmcsr);
3170
3171         switch (state) {
3172         case PCI_D0:
3173                 pci_write_config_word(bp->pdev, bp->pdev->pm_cap + PCI_PM_CTRL,
3174                                       ((pmcsr & ~PCI_PM_CTRL_STATE_MASK) |
3175                                        PCI_PM_CTRL_PME_STATUS));
3176
3177                 if (pmcsr & PCI_PM_CTRL_STATE_MASK)
3178                         /* delay required during transition out of D3hot */
3179                         msleep(20);
3180                 break;
3181
3182         case PCI_D3hot:
3183                 /* If there are other clients above don't
3184                    shut down the power */
3185                 if (atomic_read(&bp->pdev->enable_cnt) != 1)
3186                         return 0;
3187                 /* Don't shut down the power for emulation and FPGA */
3188                 if (CHIP_REV_IS_SLOW(bp))
3189                         return 0;
3190
3191                 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
3192                 pmcsr |= 3;
3193
3194                 if (bp->wol)
3195                         pmcsr |= PCI_PM_CTRL_PME_ENABLE;
3196
3197                 pci_write_config_word(bp->pdev, bp->pdev->pm_cap + PCI_PM_CTRL,
3198                                       pmcsr);
3199
3200                 /* No more memory access after this point until
3201                 * device is brought back to D0.
3202                 */
3203                 break;
3204
3205         default:
3206                 dev_err(&bp->pdev->dev, "Can't support state = %d\n", state);
3207                 return -EINVAL;
3208         }
3209         return 0;
3210 }
3211
3212 /*
3213  * net_device service functions
3214  */
3215 static int bnx2x_poll(struct napi_struct *napi, int budget)
3216 {
3217         struct bnx2x_fastpath *fp = container_of(napi, struct bnx2x_fastpath,
3218                                                  napi);
3219         struct bnx2x *bp = fp->bp;
3220         int rx_work_done;
3221         u8 cos;
3222
3223 #ifdef BNX2X_STOP_ON_ERROR
3224         if (unlikely(bp->panic)) {
3225                 napi_complete(napi);
3226                 return 0;
3227         }
3228 #endif
3229         for_each_cos_in_tx_queue(fp, cos)
3230                 if (bnx2x_tx_queue_has_work(fp->txdata_ptr[cos]))
3231                         bnx2x_tx_int(bp, fp->txdata_ptr[cos]);
3232
3233         rx_work_done = (bnx2x_has_rx_work(fp)) ? bnx2x_rx_int(fp, budget) : 0;
3234
3235         if (rx_work_done < budget) {
3236                 /* No need to update SB for FCoE L2 ring as long as
3237                  * it's connected to the default SB and the SB
3238                  * has been updated when NAPI was scheduled.
3239                  */
3240                 if (IS_FCOE_FP(fp)) {
3241                         napi_complete_done(napi, rx_work_done);
3242                 } else {
3243                         bnx2x_update_fpsb_idx(fp);
3244                         /* bnx2x_has_rx_work() reads the status block,
3245                          * thus we need to ensure that status block indices
3246                          * have been actually read (bnx2x_update_fpsb_idx)
3247                          * prior to this check (bnx2x_has_rx_work) so that
3248                          * we won't write the "newer" value of the status block
3249                          * to IGU (if there was a DMA right after
3250                          * bnx2x_has_rx_work and if there is no rmb, the memory
3251                          * reading (bnx2x_update_fpsb_idx) may be postponed
3252                          * to right before bnx2x_ack_sb). In this case there
3253                          * will never be another interrupt until there is
3254                          * another update of the status block, while there
3255                          * is still unhandled work.
3256                          */
3257                         rmb();
3258
3259                         if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) {
3260                                 if (napi_complete_done(napi, rx_work_done)) {
3261                                         /* Re-enable interrupts */
3262                                         DP(NETIF_MSG_RX_STATUS,
3263                                            "Update index to %d\n", fp->fp_hc_idx);
3264                                         bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID,
3265                                                      le16_to_cpu(fp->fp_hc_idx),
3266                                                      IGU_INT_ENABLE, 1);
3267                                 }
3268                         } else {
3269                                 rx_work_done = budget;
3270                         }
3271                 }
3272         }
3273
3274         return rx_work_done;
3275 }
3276
3277 /* we split the first BD into headers and data BDs
3278  * to ease the pain of our fellow microcode engineers
3279  * we use one mapping for both BDs
3280  */
3281 static u16 bnx2x_tx_split(struct bnx2x *bp,
3282                           struct bnx2x_fp_txdata *txdata,
3283                           struct sw_tx_bd *tx_buf,
3284                           struct eth_tx_start_bd **tx_bd, u16 hlen,
3285                           u16 bd_prod)
3286 {
3287         struct eth_tx_start_bd *h_tx_bd = *tx_bd;
3288         struct eth_tx_bd *d_tx_bd;
3289         dma_addr_t mapping;
3290         int old_len = le16_to_cpu(h_tx_bd->nbytes);
3291
3292         /* first fix first BD */
3293         h_tx_bd->nbytes = cpu_to_le16(hlen);
3294
3295         DP(NETIF_MSG_TX_QUEUED, "TSO split header size is %d (%x:%x)\n",
3296            h_tx_bd->nbytes, h_tx_bd->addr_hi, h_tx_bd->addr_lo);
3297
3298         /* now get a new data BD
3299          * (after the pbd) and fill it */
3300         bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
3301         d_tx_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
3302
3303         mapping = HILO_U64(le32_to_cpu(h_tx_bd->addr_hi),
3304                            le32_to_cpu(h_tx_bd->addr_lo)) + hlen;
3305
3306         d_tx_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
3307         d_tx_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
3308         d_tx_bd->nbytes = cpu_to_le16(old_len - hlen);
3309
3310         /* this marks the BD as one that has no individual mapping */
3311         tx_buf->flags |= BNX2X_TSO_SPLIT_BD;
3312
3313         DP(NETIF_MSG_TX_QUEUED,
3314            "TSO split data size is %d (%x:%x)\n",
3315            d_tx_bd->nbytes, d_tx_bd->addr_hi, d_tx_bd->addr_lo);
3316
3317         /* update tx_bd */
3318         *tx_bd = (struct eth_tx_start_bd *)d_tx_bd;
3319
3320         return bd_prod;
3321 }
3322
3323 #define bswab32(b32) ((__force __le32) swab32((__force __u32) (b32)))
3324 #define bswab16(b16) ((__force __le16) swab16((__force __u16) (b16)))
3325 static __le16 bnx2x_csum_fix(unsigned char *t_header, u16 csum, s8 fix)
3326 {
3327         __sum16 tsum = (__force __sum16) csum;
3328
3329         if (fix > 0)
3330                 tsum = ~csum_fold(csum_sub((__force __wsum) csum,
3331                                   csum_partial(t_header - fix, fix, 0)));
3332
3333         else if (fix < 0)
3334                 tsum = ~csum_fold(csum_add((__force __wsum) csum,
3335                                   csum_partial(t_header, -fix, 0)));
3336
3337         return bswab16(tsum);
3338 }
3339
3340 static u32 bnx2x_xmit_type(struct bnx2x *bp, struct sk_buff *skb)
3341 {
3342         u32 rc;
3343         __u8 prot = 0;
3344         __be16 protocol;
3345
3346         if (skb->ip_summed != CHECKSUM_PARTIAL)
3347                 return XMIT_PLAIN;
3348
3349         protocol = vlan_get_protocol(skb);
3350         if (protocol == htons(ETH_P_IPV6)) {
3351                 rc = XMIT_CSUM_V6;
3352                 prot = ipv6_hdr(skb)->nexthdr;
3353         } else {
3354                 rc = XMIT_CSUM_V4;
3355                 prot = ip_hdr(skb)->protocol;
3356         }
3357
3358         if (!CHIP_IS_E1x(bp) && skb->encapsulation) {
3359                 if (inner_ip_hdr(skb)->version == 6) {
3360                         rc |= XMIT_CSUM_ENC_V6;
3361                         if (inner_ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
3362                                 rc |= XMIT_CSUM_TCP;
3363                 } else {
3364                         rc |= XMIT_CSUM_ENC_V4;
3365                         if (inner_ip_hdr(skb)->protocol == IPPROTO_TCP)
3366                                 rc |= XMIT_CSUM_TCP;
3367                 }
3368         }
3369         if (prot == IPPROTO_TCP)
3370                 rc |= XMIT_CSUM_TCP;
3371
3372         if (skb_is_gso(skb)) {
3373                 if (skb_is_gso_v6(skb)) {
3374                         rc |= (XMIT_GSO_V6 | XMIT_CSUM_TCP);
3375                         if (rc & XMIT_CSUM_ENC)
3376                                 rc |= XMIT_GSO_ENC_V6;
3377                 } else {
3378                         rc |= (XMIT_GSO_V4 | XMIT_CSUM_TCP);
3379                         if (rc & XMIT_CSUM_ENC)
3380                                 rc |= XMIT_GSO_ENC_V4;
3381                 }
3382         }
3383
3384         return rc;
3385 }
3386
3387 /* VXLAN: 4 = 1 (for linear data BD) + 3 (2 for PBD and last BD) */
3388 #define BNX2X_NUM_VXLAN_TSO_WIN_SUB_BDS         4
3389
3390 /* Regular: 3 = 1 (for linear data BD) + 2 (for PBD and last BD) */
3391 #define BNX2X_NUM_TSO_WIN_SUB_BDS               3
3392
3393 #if (MAX_SKB_FRAGS >= MAX_FETCH_BD - BDS_PER_TX_PKT)
3394 /* check if packet requires linearization (packet is too fragmented)
3395    no need to check fragmentation if page size > 8K (there will be no
3396    violation to FW restrictions) */
3397 static int bnx2x_pkt_req_lin(struct bnx2x *bp, struct sk_buff *skb,
3398                              u32 xmit_type)
3399 {
3400         int first_bd_sz = 0, num_tso_win_sub = BNX2X_NUM_TSO_WIN_SUB_BDS;
3401         int to_copy = 0, hlen = 0;
3402
3403         if (xmit_type & XMIT_GSO_ENC)
3404                 num_tso_win_sub = BNX2X_NUM_VXLAN_TSO_WIN_SUB_BDS;
3405
3406         if (skb_shinfo(skb)->nr_frags >= (MAX_FETCH_BD - num_tso_win_sub)) {
3407                 if (xmit_type & XMIT_GSO) {
3408                         unsigned short lso_mss = skb_shinfo(skb)->gso_size;
3409                         int wnd_size = MAX_FETCH_BD - num_tso_win_sub;
3410                         /* Number of windows to check */
3411                         int num_wnds = skb_shinfo(skb)->nr_frags - wnd_size;
3412                         int wnd_idx = 0;
3413                         int frag_idx = 0;
3414                         u32 wnd_sum = 0;
3415
3416                         /* Headers length */
3417                         if (xmit_type & XMIT_GSO_ENC)
3418                                 hlen = (int)(skb_inner_transport_header(skb) -
3419                                              skb->data) +
3420                                              inner_tcp_hdrlen(skb);
3421                         else
3422                                 hlen = (int)(skb_transport_header(skb) -
3423                                              skb->data) + tcp_hdrlen(skb);
3424
3425                         /* Amount of data (w/o headers) on linear part of SKB*/
3426                         first_bd_sz = skb_headlen(skb) - hlen;
3427
3428                         wnd_sum  = first_bd_sz;
3429
3430                         /* Calculate the first sum - it's special */
3431                         for (frag_idx = 0; frag_idx < wnd_size - 1; frag_idx++)
3432                                 wnd_sum +=
3433                                         skb_frag_size(&skb_shinfo(skb)->frags[frag_idx]);
3434
3435                         /* If there was data on linear skb data - check it */
3436                         if (first_bd_sz > 0) {
3437                                 if (unlikely(wnd_sum < lso_mss)) {
3438                                         to_copy = 1;
3439                                         goto exit_lbl;
3440                                 }
3441
3442                                 wnd_sum -= first_bd_sz;
3443                         }
3444
3445                         /* Others are easier: run through the frag list and
3446                            check all windows */
3447                         for (wnd_idx = 0; wnd_idx <= num_wnds; wnd_idx++) {
3448                                 wnd_sum +=
3449                           skb_frag_size(&skb_shinfo(skb)->frags[wnd_idx + wnd_size - 1]);
3450
3451                                 if (unlikely(wnd_sum < lso_mss)) {
3452                                         to_copy = 1;
3453                                         break;
3454                                 }
3455                                 wnd_sum -=
3456                                         skb_frag_size(&skb_shinfo(skb)->frags[wnd_idx]);
3457                         }
3458                 } else {
3459                         /* in non-LSO too fragmented packet should always
3460                            be linearized */
3461                         to_copy = 1;
3462                 }
3463         }
3464
3465 exit_lbl:
3466         if (unlikely(to_copy))
3467                 DP(NETIF_MSG_TX_QUEUED,
3468                    "Linearization IS REQUIRED for %s packet. num_frags %d  hlen %d  first_bd_sz %d\n",
3469                    (xmit_type & XMIT_GSO) ? "LSO" : "non-LSO",
3470                    skb_shinfo(skb)->nr_frags, hlen, first_bd_sz);
3471
3472         return to_copy;
3473 }
3474 #endif
3475
3476 /**
3477  * bnx2x_set_pbd_gso - update PBD in GSO case.
3478  *
3479  * @skb:        packet skb
3480  * @pbd:        parse BD
3481  * @xmit_type:  xmit flags
3482  */
3483 static void bnx2x_set_pbd_gso(struct sk_buff *skb,
3484                               struct eth_tx_parse_bd_e1x *pbd,
3485                               u32 xmit_type)
3486 {
3487         pbd->lso_mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
3488         pbd->tcp_send_seq = bswab32(tcp_hdr(skb)->seq);
3489         pbd->tcp_flags = pbd_tcp_flags(tcp_hdr(skb));
3490
3491         if (xmit_type & XMIT_GSO_V4) {
3492                 pbd->ip_id = bswab16(ip_hdr(skb)->id);
3493                 pbd->tcp_pseudo_csum =
3494                         bswab16(~csum_tcpudp_magic(ip_hdr(skb)->saddr,
3495                                                    ip_hdr(skb)->daddr,
3496                                                    0, IPPROTO_TCP, 0));
3497         } else {
3498                 pbd->tcp_pseudo_csum =
3499                         bswab16(~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
3500                                                  &ipv6_hdr(skb)->daddr,
3501                                                  0, IPPROTO_TCP, 0));
3502         }
3503
3504         pbd->global_data |=
3505                 cpu_to_le16(ETH_TX_PARSE_BD_E1X_PSEUDO_CS_WITHOUT_LEN);
3506 }
3507
3508 /**
3509  * bnx2x_set_pbd_csum_enc - update PBD with checksum and return header length
3510  *
3511  * @bp:                 driver handle
3512  * @skb:                packet skb
3513  * @parsing_data:       data to be updated
3514  * @xmit_type:          xmit flags
3515  *
3516  * 57712/578xx related, when skb has encapsulation
3517  */
3518 static u8 bnx2x_set_pbd_csum_enc(struct bnx2x *bp, struct sk_buff *skb,
3519                                  u32 *parsing_data, u32 xmit_type)
3520 {
3521         *parsing_data |=
3522                 ((((u8 *)skb_inner_transport_header(skb) - skb->data) >> 1) <<
3523                 ETH_TX_PARSE_BD_E2_L4_HDR_START_OFFSET_W_SHIFT) &
3524                 ETH_TX_PARSE_BD_E2_L4_HDR_START_OFFSET_W;
3525
3526         if (xmit_type & XMIT_CSUM_TCP) {
3527                 *parsing_data |= ((inner_tcp_hdrlen(skb) / 4) <<
3528                         ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW_SHIFT) &
3529                         ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW;
3530
3531                 return skb_inner_transport_header(skb) +
3532                         inner_tcp_hdrlen(skb) - skb->data;
3533         }
3534
3535         /* We support checksum offload for TCP and UDP only.
3536          * No need to pass the UDP header length - it's a constant.
3537          */
3538         return skb_inner_transport_header(skb) +
3539                 sizeof(struct udphdr) - skb->data;
3540 }
3541
3542 /**
3543  * bnx2x_set_pbd_csum_e2 - update PBD with checksum and return header length
3544  *
3545  * @bp:                 driver handle
3546  * @skb:                packet skb
3547  * @parsing_data:       data to be updated
3548  * @xmit_type:          xmit flags
3549  *
3550  * 57712/578xx related
3551  */
3552 static u8 bnx2x_set_pbd_csum_e2(struct bnx2x *bp, struct sk_buff *skb,
3553                                 u32 *parsing_data, u32 xmit_type)
3554 {
3555         *parsing_data |=
3556                 ((((u8 *)skb_transport_header(skb) - skb->data) >> 1) <<
3557                 ETH_TX_PARSE_BD_E2_L4_HDR_START_OFFSET_W_SHIFT) &
3558                 ETH_TX_PARSE_BD_E2_L4_HDR_START_OFFSET_W;
3559
3560         if (xmit_type & XMIT_CSUM_TCP) {
3561                 *parsing_data |= ((tcp_hdrlen(skb) / 4) <<
3562                         ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW_SHIFT) &
3563                         ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW;
3564
3565                 return skb_transport_header(skb) + tcp_hdrlen(skb) - skb->data;
3566         }
3567         /* We support checksum offload for TCP and UDP only.
3568          * No need to pass the UDP header length - it's a constant.
3569          */
3570         return skb_transport_header(skb) + sizeof(struct udphdr) - skb->data;
3571 }
3572
3573 /* set FW indication according to inner or outer protocols if tunneled */
3574 static void bnx2x_set_sbd_csum(struct bnx2x *bp, struct sk_buff *skb,
3575                                struct eth_tx_start_bd *tx_start_bd,
3576                                u32 xmit_type)
3577 {
3578         tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_L4_CSUM;
3579
3580         if (xmit_type & (XMIT_CSUM_ENC_V6 | XMIT_CSUM_V6))
3581                 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_IPV6;
3582
3583         if (!(xmit_type & XMIT_CSUM_TCP))
3584                 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_IS_UDP;
3585 }
3586
3587 /**
3588  * bnx2x_set_pbd_csum - update PBD with checksum and return header length
3589  *
3590  * @bp:         driver handle
3591  * @skb:        packet skb
3592  * @pbd:        parse BD to be updated
3593  * @xmit_type:  xmit flags
3594  */
3595 static u8 bnx2x_set_pbd_csum(struct bnx2x *bp, struct sk_buff *skb,
3596                              struct eth_tx_parse_bd_e1x *pbd,
3597                              u32 xmit_type)
3598 {
3599         u8 hlen = (skb_network_header(skb) - skb->data) >> 1;
3600
3601         /* for now NS flag is not used in Linux */
3602         pbd->global_data =
3603                 cpu_to_le16(hlen |
3604                             ((skb->protocol == cpu_to_be16(ETH_P_8021Q)) <<
3605                              ETH_TX_PARSE_BD_E1X_LLC_SNAP_EN_SHIFT));
3606
3607         pbd->ip_hlen_w = (skb_transport_header(skb) -
3608                         skb_network_header(skb)) >> 1;
3609
3610         hlen += pbd->ip_hlen_w;
3611
3612         /* We support checksum offload for TCP and UDP only */
3613         if (xmit_type & XMIT_CSUM_TCP)
3614                 hlen += tcp_hdrlen(skb) / 2;
3615         else
3616                 hlen += sizeof(struct udphdr) / 2;
3617
3618         pbd->total_hlen_w = cpu_to_le16(hlen);
3619         hlen = hlen*2;
3620
3621         if (xmit_type & XMIT_CSUM_TCP) {
3622                 pbd->tcp_pseudo_csum = bswab16(tcp_hdr(skb)->check);
3623
3624         } else {
3625                 s8 fix = SKB_CS_OFF(skb); /* signed! */
3626
3627                 DP(NETIF_MSG_TX_QUEUED,
3628                    "hlen %d  fix %d  csum before fix %x\n",
3629                    le16_to_cpu(pbd->total_hlen_w), fix, SKB_CS(skb));
3630
3631                 /* HW bug: fixup the CSUM */
3632                 pbd->tcp_pseudo_csum =
3633                         bnx2x_csum_fix(skb_transport_header(skb),
3634                                        SKB_CS(skb), fix);
3635
3636                 DP(NETIF_MSG_TX_QUEUED, "csum after fix %x\n",
3637                    pbd->tcp_pseudo_csum);
3638         }
3639
3640         return hlen;
3641 }
3642
3643 static void bnx2x_update_pbds_gso_enc(struct sk_buff *skb,
3644                                       struct eth_tx_parse_bd_e2 *pbd_e2,
3645                                       struct eth_tx_parse_2nd_bd *pbd2,
3646                                       u16 *global_data,
3647                                       u32 xmit_type)
3648 {
3649         u16 hlen_w = 0;
3650         u8 outerip_off, outerip_len = 0;
3651
3652         /* from outer IP to transport */
3653         hlen_w = (skb_inner_transport_header(skb) -
3654                   skb_network_header(skb)) >> 1;
3655
3656         /* transport len */
3657         hlen_w += inner_tcp_hdrlen(skb) >> 1;
3658
3659         pbd2->fw_ip_hdr_to_payload_w = hlen_w;
3660
3661         /* outer IP header info */
3662         if (xmit_type & XMIT_CSUM_V4) {
3663                 struct iphdr *iph = ip_hdr(skb);
3664                 u32 csum = (__force u32)(~iph->check) -
3665                            (__force u32)iph->tot_len -
3666                            (__force u32)iph->frag_off;
3667
3668                 outerip_len = iph->ihl << 1;
3669
3670                 pbd2->fw_ip_csum_wo_len_flags_frag =
3671                         bswab16(csum_fold((__force __wsum)csum));
3672         } else {
3673                 pbd2->fw_ip_hdr_to_payload_w =
3674                         hlen_w - ((sizeof(struct ipv6hdr)) >> 1);
3675                 pbd_e2->data.tunnel_data.flags |=
3676                         ETH_TUNNEL_DATA_IPV6_OUTER;
3677         }
3678
3679         pbd2->tcp_send_seq = bswab32(inner_tcp_hdr(skb)->seq);
3680
3681         pbd2->tcp_flags = pbd_tcp_flags(inner_tcp_hdr(skb));
3682
3683         /* inner IP header info */
3684         if (xmit_type & XMIT_CSUM_ENC_V4) {
3685                 pbd2->hw_ip_id = bswab16(inner_ip_hdr(skb)->id);
3686
3687                 pbd_e2->data.tunnel_data.pseudo_csum =
3688                         bswab16(~csum_tcpudp_magic(
3689                                         inner_ip_hdr(skb)->saddr,
3690                                         inner_ip_hdr(skb)->daddr,
3691                                         0, IPPROTO_TCP, 0));
3692         } else {
3693                 pbd_e2->data.tunnel_data.pseudo_csum =
3694                         bswab16(~csum_ipv6_magic(
3695                                         &inner_ipv6_hdr(skb)->saddr,
3696                                         &inner_ipv6_hdr(skb)->daddr,
3697                                         0, IPPROTO_TCP, 0));
3698         }
3699
3700         outerip_off = (skb_network_header(skb) - skb->data) >> 1;
3701
3702         *global_data |=
3703                 outerip_off |
3704                 (outerip_len <<
3705                         ETH_TX_PARSE_2ND_BD_IP_HDR_LEN_OUTER_W_SHIFT) |
3706                 ((skb->protocol == cpu_to_be16(ETH_P_8021Q)) <<
3707                         ETH_TX_PARSE_2ND_BD_LLC_SNAP_EN_SHIFT);
3708
3709         if (ip_hdr(skb)->protocol == IPPROTO_UDP) {
3710                 SET_FLAG(*global_data, ETH_TX_PARSE_2ND_BD_TUNNEL_UDP_EXIST, 1);
3711                 pbd2->tunnel_udp_hdr_start_w = skb_transport_offset(skb) >> 1;
3712         }
3713 }
3714
3715 static inline void bnx2x_set_ipv6_ext_e2(struct sk_buff *skb, u32 *parsing_data,
3716                                          u32 xmit_type)
3717 {
3718         struct ipv6hdr *ipv6;
3719
3720         if (!(xmit_type & (XMIT_GSO_ENC_V6 | XMIT_GSO_V6)))
3721                 return;
3722
3723         if (xmit_type & XMIT_GSO_ENC_V6)
3724                 ipv6 = inner_ipv6_hdr(skb);
3725         else /* XMIT_GSO_V6 */
3726                 ipv6 = ipv6_hdr(skb);
3727
3728         if (ipv6->nexthdr == NEXTHDR_IPV6)
3729                 *parsing_data |= ETH_TX_PARSE_BD_E2_IPV6_WITH_EXT_HDR;
3730 }
3731
3732 /* called with netif_tx_lock
3733  * bnx2x_tx_int() runs without netif_tx_lock unless it needs to call
3734  * netif_wake_queue()
3735  */
3736 netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
3737 {
3738         struct bnx2x *bp = netdev_priv(dev);
3739
3740         struct netdev_queue *txq;
3741         struct bnx2x_fp_txdata *txdata;
3742         struct sw_tx_bd *tx_buf;
3743         struct eth_tx_start_bd *tx_start_bd, *first_bd;
3744         struct eth_tx_bd *tx_data_bd, *total_pkt_bd = NULL;
3745         struct eth_tx_parse_bd_e1x *pbd_e1x = NULL;
3746         struct eth_tx_parse_bd_e2 *pbd_e2 = NULL;
3747         struct eth_tx_parse_2nd_bd *pbd2 = NULL;
3748         u32 pbd_e2_parsing_data = 0;
3749         u16 pkt_prod, bd_prod;
3750         int nbd, txq_index;
3751         dma_addr_t mapping;
3752         u32 xmit_type = bnx2x_xmit_type(bp, skb);
3753         int i;
3754         u8 hlen = 0;
3755         __le16 pkt_size = 0;
3756         struct ethhdr *eth;
3757         u8 mac_type = UNICAST_ADDRESS;
3758
3759 #ifdef BNX2X_STOP_ON_ERROR
3760         if (unlikely(bp->panic))
3761                 return NETDEV_TX_BUSY;
3762 #endif
3763
3764         txq_index = skb_get_queue_mapping(skb);
3765         txq = netdev_get_tx_queue(dev, txq_index);
3766
3767         BUG_ON(txq_index >= MAX_ETH_TXQ_IDX(bp) + (CNIC_LOADED(bp) ? 1 : 0));
3768
3769         txdata = &bp->bnx2x_txq[txq_index];
3770
3771         /* enable this debug print to view the transmission queue being used
3772         DP(NETIF_MSG_TX_QUEUED, "indices: txq %d, fp %d, txdata %d\n",
3773            txq_index, fp_index, txdata_index); */
3774
3775         /* enable this debug print to view the transmission details
3776         DP(NETIF_MSG_TX_QUEUED,
3777            "transmitting packet cid %d fp index %d txdata_index %d tx_data ptr %p fp pointer %p\n",
3778            txdata->cid, fp_index, txdata_index, txdata, fp); */
3779
3780         if (unlikely(bnx2x_tx_avail(bp, txdata) <
3781                         skb_shinfo(skb)->nr_frags +
3782                         BDS_PER_TX_PKT +
3783                         NEXT_CNT_PER_TX_PKT(MAX_BDS_PER_TX_PKT))) {
3784                 /* Handle special storage cases separately */
3785                 if (txdata->tx_ring_size == 0) {
3786                         struct bnx2x_eth_q_stats *q_stats =
3787                                 bnx2x_fp_qstats(bp, txdata->parent_fp);
3788                         q_stats->driver_filtered_tx_pkt++;
3789                         dev_kfree_skb(skb);
3790                         return NETDEV_TX_OK;
3791                 }
3792                 bnx2x_fp_qstats(bp, txdata->parent_fp)->driver_xoff++;
3793                 netif_tx_stop_queue(txq);
3794                 BNX2X_ERR("BUG! Tx ring full when queue awake!\n");
3795
3796                 return NETDEV_TX_BUSY;
3797         }
3798
3799         DP(NETIF_MSG_TX_QUEUED,
3800            "queue[%d]: SKB: summed %x  protocol %x protocol(%x,%x) gso type %x  xmit_type %x len %d\n",
3801            txq_index, skb->ip_summed, skb->protocol, ipv6_hdr(skb)->nexthdr,
3802            ip_hdr(skb)->protocol, skb_shinfo(skb)->gso_type, xmit_type,
3803            skb->len);
3804
3805         eth = (struct ethhdr *)skb->data;
3806
3807         /* set flag according to packet type (UNICAST_ADDRESS is default)*/
3808         if (unlikely(is_multicast_ether_addr(eth->h_dest))) {
3809                 if (is_broadcast_ether_addr(eth->h_dest))
3810                         mac_type = BROADCAST_ADDRESS;
3811                 else
3812                         mac_type = MULTICAST_ADDRESS;
3813         }
3814
3815 #if (MAX_SKB_FRAGS >= MAX_FETCH_BD - BDS_PER_TX_PKT)
3816         /* First, check if we need to linearize the skb (due to FW
3817            restrictions). No need to check fragmentation if page size > 8K
3818            (there will be no violation to FW restrictions) */
3819         if (bnx2x_pkt_req_lin(bp, skb, xmit_type)) {
3820                 /* Statistics of linearization */
3821                 bp->lin_cnt++;
3822                 if (skb_linearize(skb) != 0) {
3823                         DP(NETIF_MSG_TX_QUEUED,
3824                            "SKB linearization failed - silently dropping this SKB\n");
3825                         dev_kfree_skb_any(skb);
3826                         return NETDEV_TX_OK;
3827                 }
3828         }
3829 #endif
3830         /* Map skb linear data for DMA */
3831         mapping = dma_map_single(&bp->pdev->dev, skb->data,
3832                                  skb_headlen(skb), DMA_TO_DEVICE);
3833         if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
3834                 DP(NETIF_MSG_TX_QUEUED,
3835                    "SKB mapping failed - silently dropping this SKB\n");
3836                 dev_kfree_skb_any(skb);
3837                 return NETDEV_TX_OK;
3838         }
3839         /*
3840         Please read carefully. First we use one BD which we mark as start,
3841         then we have a parsing info BD (used for TSO or xsum),
3842         and only then we have the rest of the TSO BDs.
3843         (don't forget to mark the last one as last,
3844         and to unmap only AFTER you write to the BD ...)
3845         And above all, all pdb sizes are in words - NOT DWORDS!
3846         */
3847
3848         /* get current pkt produced now - advance it just before sending packet
3849          * since mapping of pages may fail and cause packet to be dropped
3850          */
3851         pkt_prod = txdata->tx_pkt_prod;
3852         bd_prod = TX_BD(txdata->tx_bd_prod);
3853
3854         /* get a tx_buf and first BD
3855          * tx_start_bd may be changed during SPLIT,
3856          * but first_bd will always stay first
3857          */
3858         tx_buf = &txdata->tx_buf_ring[TX_BD(pkt_prod)];
3859         tx_start_bd = &txdata->tx_desc_ring[bd_prod].start_bd;
3860         first_bd = tx_start_bd;
3861
3862         tx_start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
3863
3864         if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
3865                 if (!(bp->flags & TX_TIMESTAMPING_EN)) {
3866                         bp->eth_stats.ptp_skip_tx_ts++;
3867                         BNX2X_ERR("Tx timestamping was not enabled, this packet will not be timestamped\n");
3868                 } else if (bp->ptp_tx_skb) {
3869                         bp->eth_stats.ptp_skip_tx_ts++;
3870                         netdev_err_once(bp->dev,
3871                                         "Device supports only a single outstanding packet to timestamp, this packet won't be timestamped\n");
3872                 } else {
3873                         skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
3874                         /* schedule check for Tx timestamp */
3875                         bp->ptp_tx_skb = skb_get(skb);
3876                         bp->ptp_tx_start = jiffies;
3877                         schedule_work(&bp->ptp_task);
3878                 }
3879         }
3880
3881         /* header nbd: indirectly zero other flags! */
3882         tx_start_bd->general_data = 1 << ETH_TX_START_BD_HDR_NBDS_SHIFT;
3883
3884         /* remember the first BD of the packet */
3885         tx_buf->first_bd = txdata->tx_bd_prod;
3886         tx_buf->skb = skb;
3887         tx_buf->flags = 0;
3888
3889         DP(NETIF_MSG_TX_QUEUED,
3890            "sending pkt %u @%p  next_idx %u  bd %u @%p\n",
3891            pkt_prod, tx_buf, txdata->tx_pkt_prod, bd_prod, tx_start_bd);
3892
3893         if (skb_vlan_tag_present(skb)) {
3894                 tx_start_bd->vlan_or_ethertype =
3895                     cpu_to_le16(skb_vlan_tag_get(skb));
3896                 tx_start_bd->bd_flags.as_bitfield |=
3897                     (X_ETH_OUTBAND_VLAN << ETH_TX_BD_FLAGS_VLAN_MODE_SHIFT);
3898         } else {
3899                 /* when transmitting in a vf, start bd must hold the ethertype
3900                  * for fw to enforce it
3901                  */
3902                 u16 vlan_tci = 0;
3903 #ifndef BNX2X_STOP_ON_ERROR
3904                 if (IS_VF(bp)) {
3905 #endif
3906                         /* Still need to consider inband vlan for enforced */
3907                         if (__vlan_get_tag(skb, &vlan_tci)) {
3908                                 tx_start_bd->vlan_or_ethertype =
3909                                         cpu_to_le16(ntohs(eth->h_proto));
3910                         } else {
3911                                 tx_start_bd->bd_flags.as_bitfield |=
3912                                         (X_ETH_INBAND_VLAN <<
3913                                          ETH_TX_BD_FLAGS_VLAN_MODE_SHIFT);
3914                                 tx_start_bd->vlan_or_ethertype =
3915                                         cpu_to_le16(vlan_tci);
3916                         }
3917 #ifndef BNX2X_STOP_ON_ERROR
3918                 } else {
3919                         /* used by FW for packet accounting */
3920                         tx_start_bd->vlan_or_ethertype = cpu_to_le16(pkt_prod);
3921                 }
3922 #endif
3923         }
3924
3925         nbd = 2; /* start_bd + pbd + frags (updated when pages are mapped) */
3926
3927         /* turn on parsing and get a BD */
3928         bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
3929
3930         if (xmit_type & XMIT_CSUM)
3931                 bnx2x_set_sbd_csum(bp, skb, tx_start_bd, xmit_type);
3932
3933         if (!CHIP_IS_E1x(bp)) {
3934                 pbd_e2 = &txdata->tx_desc_ring[bd_prod].parse_bd_e2;
3935                 memset(pbd_e2, 0, sizeof(struct eth_tx_parse_bd_e2));
3936
3937                 if (xmit_type & XMIT_CSUM_ENC) {
3938                         u16 global_data = 0;
3939
3940                         /* Set PBD in enc checksum offload case */
3941                         hlen = bnx2x_set_pbd_csum_enc(bp, skb,
3942                                                       &pbd_e2_parsing_data,
3943                                                       xmit_type);
3944
3945                         /* turn on 2nd parsing and get a BD */
3946                         bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
3947
3948                         pbd2 = &txdata->tx_desc_ring[bd_prod].parse_2nd_bd;
3949
3950                         memset(pbd2, 0, sizeof(*pbd2));
3951
3952                         pbd_e2->data.tunnel_data.ip_hdr_start_inner_w =
3953                                 (skb_inner_network_header(skb) -
3954                                  skb->data) >> 1;
3955
3956                         if (xmit_type & XMIT_GSO_ENC)
3957                                 bnx2x_update_pbds_gso_enc(skb, pbd_e2, pbd2,
3958                                                           &global_data,
3959                                                           xmit_type);
3960
3961                         pbd2->global_data = cpu_to_le16(global_data);
3962
3963                         /* add addition parse BD indication to start BD */
3964                         SET_FLAG(tx_start_bd->general_data,
3965                                  ETH_TX_START_BD_PARSE_NBDS, 1);
3966                         /* set encapsulation flag in start BD */
3967                         SET_FLAG(tx_start_bd->general_data,
3968                                  ETH_TX_START_BD_TUNNEL_EXIST, 1);
3969
3970                         tx_buf->flags |= BNX2X_HAS_SECOND_PBD;
3971
3972                         nbd++;
3973                 } else if (xmit_type & XMIT_CSUM) {
3974                         /* Set PBD in checksum offload case w/o encapsulation */
3975                         hlen = bnx2x_set_pbd_csum_e2(bp, skb,
3976                                                      &pbd_e2_parsing_data,
3977                                                      xmit_type);
3978                 }
3979
3980                 bnx2x_set_ipv6_ext_e2(skb, &pbd_e2_parsing_data, xmit_type);
3981                 /* Add the macs to the parsing BD if this is a vf or if
3982                  * Tx Switching is enabled.
3983                  */
3984                 if (IS_VF(bp)) {
3985                         /* override GRE parameters in BD */
3986                         bnx2x_set_fw_mac_addr(&pbd_e2->data.mac_addr.src_hi,
3987                                               &pbd_e2->data.mac_addr.src_mid,
3988                                               &pbd_e2->data.mac_addr.src_lo,
3989                                               eth->h_source);
3990
3991                         bnx2x_set_fw_mac_addr(&pbd_e2->data.mac_addr.dst_hi,
3992                                               &pbd_e2->data.mac_addr.dst_mid,
3993                                               &pbd_e2->data.mac_addr.dst_lo,
3994                                               eth->h_dest);
3995                 } else {
3996                         if (bp->flags & TX_SWITCHING)
3997                                 bnx2x_set_fw_mac_addr(
3998                                                 &pbd_e2->data.mac_addr.dst_hi,
3999                                                 &pbd_e2->data.mac_addr.dst_mid,
4000                                                 &pbd_e2->data.mac_addr.dst_lo,
4001                                                 eth->h_dest);
4002 #ifdef BNX2X_STOP_ON_ERROR
4003                         /* Enforce security is always set in Stop on Error -
4004                          * source mac should be present in the parsing BD
4005                          */
4006                         bnx2x_set_fw_mac_addr(&pbd_e2->data.mac_addr.src_hi,
4007                                               &pbd_e2->data.mac_addr.src_mid,
4008                                               &pbd_e2->data.mac_addr.src_lo,
4009                                               eth->h_source);
4010 #endif
4011                 }
4012
4013                 SET_FLAG(pbd_e2_parsing_data,
4014                          ETH_TX_PARSE_BD_E2_ETH_ADDR_TYPE, mac_type);
4015         } else {
4016                 u16 global_data = 0;
4017                 pbd_e1x = &txdata->tx_desc_ring[bd_prod].parse_bd_e1x;
4018                 memset(pbd_e1x, 0, sizeof(struct eth_tx_parse_bd_e1x));
4019                 /* Set PBD in checksum offload case */
4020                 if (xmit_type & XMIT_CSUM)
4021                         hlen = bnx2x_set_pbd_csum(bp, skb, pbd_e1x, xmit_type);
4022
4023                 SET_FLAG(global_data,
4024                          ETH_TX_PARSE_BD_E1X_ETH_ADDR_TYPE, mac_type);
4025                 pbd_e1x->global_data |= cpu_to_le16(global_data);
4026         }
4027
4028         /* Setup the data pointer of the first BD of the packet */
4029         tx_start_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
4030         tx_start_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
4031         tx_start_bd->nbytes = cpu_to_le16(skb_headlen(skb));
4032         pkt_size = tx_start_bd->nbytes;
4033
4034         DP(NETIF_MSG_TX_QUEUED,
4035            "first bd @%p  addr (%x:%x)  nbytes %d  flags %x  vlan %x\n",
4036            tx_start_bd, tx_start_bd->addr_hi, tx_start_bd->addr_lo,
4037            le16_to_cpu(tx_start_bd->nbytes),
4038            tx_start_bd->bd_flags.as_bitfield,
4039            le16_to_cpu(tx_start_bd->vlan_or_ethertype));
4040
4041         if (xmit_type & XMIT_GSO) {
4042
4043                 DP(NETIF_MSG_TX_QUEUED,
4044                    "TSO packet len %d  hlen %d  total len %d  tso size %d\n",
4045                    skb->len, hlen, skb_headlen(skb),
4046                    skb_shinfo(skb)->gso_size);
4047
4048                 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_SW_LSO;
4049
4050                 if (unlikely(skb_headlen(skb) > hlen)) {
4051                         nbd++;
4052                         bd_prod = bnx2x_tx_split(bp, txdata, tx_buf,
4053                                                  &tx_start_bd, hlen,
4054                                                  bd_prod);
4055                 }
4056                 if (!CHIP_IS_E1x(bp))
4057                         pbd_e2_parsing_data |=
4058                                 (skb_shinfo(skb)->gso_size <<
4059                                  ETH_TX_PARSE_BD_E2_LSO_MSS_SHIFT) &
4060                                  ETH_TX_PARSE_BD_E2_LSO_MSS;
4061                 else
4062                         bnx2x_set_pbd_gso(skb, pbd_e1x, xmit_type);
4063         }
4064
4065         /* Set the PBD's parsing_data field if not zero
4066          * (for the chips newer than 57711).
4067          */
4068         if (pbd_e2_parsing_data)
4069                 pbd_e2->parsing_data = cpu_to_le32(pbd_e2_parsing_data);
4070
4071         tx_data_bd = (struct eth_tx_bd *)tx_start_bd;
4072
4073         /* Handle fragmented skb */
4074         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
4075                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4076
4077                 mapping = skb_frag_dma_map(&bp->pdev->dev, frag, 0,
4078                                            skb_frag_size(frag), DMA_TO_DEVICE);
4079                 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
4080                         unsigned int pkts_compl = 0, bytes_compl = 0;
4081
4082                         DP(NETIF_MSG_TX_QUEUED,
4083                            "Unable to map page - dropping packet...\n");
4084
4085                         /* we need unmap all buffers already mapped
4086                          * for this SKB;
4087                          * first_bd->nbd need to be properly updated
4088                          * before call to bnx2x_free_tx_pkt
4089                          */
4090                         first_bd->nbd = cpu_to_le16(nbd);
4091                         bnx2x_free_tx_pkt(bp, txdata,
4092                                           TX_BD(txdata->tx_pkt_prod),
4093                                           &pkts_compl, &bytes_compl);
4094                         return NETDEV_TX_OK;
4095                 }
4096
4097                 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
4098                 tx_data_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
4099                 if (total_pkt_bd == NULL)
4100                         total_pkt_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
4101
4102                 tx_data_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
4103                 tx_data_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
4104                 tx_data_bd->nbytes = cpu_to_le16(skb_frag_size(frag));
4105                 le16_add_cpu(&pkt_size, skb_frag_size(frag));
4106                 nbd++;
4107
4108                 DP(NETIF_MSG_TX_QUEUED,
4109                    "frag %d  bd @%p  addr (%x:%x)  nbytes %d\n",
4110                    i, tx_data_bd, tx_data_bd->addr_hi, tx_data_bd->addr_lo,
4111                    le16_to_cpu(tx_data_bd->nbytes));
4112         }
4113
4114         DP(NETIF_MSG_TX_QUEUED, "last bd @%p\n", tx_data_bd);
4115
4116         /* update with actual num BDs */
4117         first_bd->nbd = cpu_to_le16(nbd);
4118
4119         bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
4120
4121         /* now send a tx doorbell, counting the next BD
4122          * if the packet contains or ends with it
4123          */
4124         if (TX_BD_POFF(bd_prod) < nbd)
4125                 nbd++;
4126
4127         /* total_pkt_bytes should be set on the first data BD if
4128          * it's not an LSO packet and there is more than one
4129          * data BD. In this case pkt_size is limited by an MTU value.
4130          * However we prefer to set it for an LSO packet (while we don't
4131          * have to) in order to save some CPU cycles in a none-LSO
4132          * case, when we much more care about them.
4133          */
4134         if (total_pkt_bd != NULL)
4135                 total_pkt_bd->total_pkt_bytes = pkt_size;
4136
4137         if (pbd_e1x)
4138                 DP(NETIF_MSG_TX_QUEUED,
4139                    "PBD (E1X) @%p  ip_data %x  ip_hlen %u  ip_id %u  lso_mss %u  tcp_flags %x  xsum %x  seq %u  hlen %u\n",
4140                    pbd_e1x, pbd_e1x->global_data, pbd_e1x->ip_hlen_w,
4141                    pbd_e1x->ip_id, pbd_e1x->lso_mss, pbd_e1x->tcp_flags,
4142                    pbd_e1x->tcp_pseudo_csum, pbd_e1x->tcp_send_seq,
4143                     le16_to_cpu(pbd_e1x->total_hlen_w));
4144         if (pbd_e2)
4145                 DP(NETIF_MSG_TX_QUEUED,
4146                    "PBD (E2) @%p  dst %x %x %x src %x %x %x parsing_data %x\n",
4147                    pbd_e2,
4148                    pbd_e2->data.mac_addr.dst_hi,
4149                    pbd_e2->data.mac_addr.dst_mid,
4150                    pbd_e2->data.mac_addr.dst_lo,
4151                    pbd_e2->data.mac_addr.src_hi,
4152                    pbd_e2->data.mac_addr.src_mid,
4153                    pbd_e2->data.mac_addr.src_lo,
4154                    pbd_e2->parsing_data);
4155         DP(NETIF_MSG_TX_QUEUED, "doorbell: nbd %d  bd %u\n", nbd, bd_prod);
4156
4157         netdev_tx_sent_queue(txq, skb->len);
4158
4159         skb_tx_timestamp(skb);
4160
4161         txdata->tx_pkt_prod++;
4162         /*
4163          * Make sure that the BD data is updated before updating the producer
4164          * since FW might read the BD right after the producer is updated.
4165          * This is only applicable for weak-ordered memory model archs such
4166          * as IA-64. The following barrier is also mandatory since FW will
4167          * assumes packets must have BDs.
4168          */
4169         wmb();
4170
4171         txdata->tx_db.data.prod += nbd;
4172         /* make sure descriptor update is observed by HW */
4173         wmb();
4174
4175         DOORBELL_RELAXED(bp, txdata->cid, txdata->tx_db.raw);
4176
4177         txdata->tx_bd_prod += nbd;
4178
4179         if (unlikely(bnx2x_tx_avail(bp, txdata) < MAX_DESC_PER_TX_PKT)) {
4180                 netif_tx_stop_queue(txq);
4181
4182                 /* paired memory barrier is in bnx2x_tx_int(), we have to keep
4183                  * ordering of set_bit() in netif_tx_stop_queue() and read of
4184                  * fp->bd_tx_cons */
4185                 smp_mb();
4186
4187                 bnx2x_fp_qstats(bp, txdata->parent_fp)->driver_xoff++;
4188                 if (bnx2x_tx_avail(bp, txdata) >= MAX_DESC_PER_TX_PKT)
4189                         netif_tx_wake_queue(txq);
4190         }
4191         txdata->tx_pkt++;
4192
4193         return NETDEV_TX_OK;
4194 }
4195
4196 void bnx2x_get_c2s_mapping(struct bnx2x *bp, u8 *c2s_map, u8 *c2s_default)
4197 {
4198         int mfw_vn = BP_FW_MB_IDX(bp);
4199         u32 tmp;
4200
4201         /* If the shmem shouldn't affect configuration, reflect */
4202         if (!IS_MF_BD(bp)) {
4203                 int i;
4204
4205                 for (i = 0; i < BNX2X_MAX_PRIORITY; i++)
4206                         c2s_map[i] = i;
4207                 *c2s_default = 0;
4208
4209                 return;
4210         }
4211
4212         tmp = SHMEM2_RD(bp, c2s_pcp_map_lower[mfw_vn]);
4213         tmp = (__force u32)be32_to_cpu((__force __be32)tmp);
4214         c2s_map[0] = tmp & 0xff;
4215         c2s_map[1] = (tmp >> 8) & 0xff;
4216         c2s_map[2] = (tmp >> 16) & 0xff;
4217         c2s_map[3] = (tmp >> 24) & 0xff;
4218
4219         tmp = SHMEM2_RD(bp, c2s_pcp_map_upper[mfw_vn]);
4220         tmp = (__force u32)be32_to_cpu((__force __be32)tmp);
4221         c2s_map[4] = tmp & 0xff;
4222         c2s_map[5] = (tmp >> 8) & 0xff;
4223         c2s_map[6] = (tmp >> 16) & 0xff;
4224         c2s_map[7] = (tmp >> 24) & 0xff;
4225
4226         tmp = SHMEM2_RD(bp, c2s_pcp_map_default[mfw_vn]);
4227         tmp = (__force u32)be32_to_cpu((__force __be32)tmp);
4228         *c2s_default = (tmp >> (8 * mfw_vn)) & 0xff;
4229 }
4230
4231 /**
4232  * bnx2x_setup_tc - routine to configure net_device for multi tc
4233  *
4234  * @dev: net device to configure
4235  * @num_tc: number of traffic classes to enable
4236  *
4237  * callback connected to the ndo_setup_tc function pointer
4238  */
4239 int bnx2x_setup_tc(struct net_device *dev, u8 num_tc)
4240 {
4241         struct bnx2x *bp = netdev_priv(dev);
4242         u8 c2s_map[BNX2X_MAX_PRIORITY], c2s_def;
4243         int cos, prio, count, offset;
4244
4245         /* setup tc must be called under rtnl lock */
4246         ASSERT_RTNL();
4247
4248         /* no traffic classes requested. Aborting */
4249         if (!num_tc) {
4250                 netdev_reset_tc(dev);
4251                 return 0;
4252         }
4253
4254         /* requested to support too many traffic classes */
4255         if (num_tc > bp->max_cos) {
4256                 BNX2X_ERR("support for too many traffic classes requested: %d. Max supported is %d\n",
4257                           num_tc, bp->max_cos);
4258                 return -EINVAL;
4259         }
4260
4261         /* declare amount of supported traffic classes */
4262         if (netdev_set_num_tc(dev, num_tc)) {
4263                 BNX2X_ERR("failed to declare %d traffic classes\n", num_tc);
4264                 return -EINVAL;
4265         }
4266
4267         bnx2x_get_c2s_mapping(bp, c2s_map, &c2s_def);
4268
4269         /* configure priority to traffic class mapping */
4270         for (prio = 0; prio < BNX2X_MAX_PRIORITY; prio++) {
4271                 int outer_prio = c2s_map[prio];
4272
4273                 netdev_set_prio_tc_map(dev, prio, bp->prio_to_cos[outer_prio]);
4274                 DP(BNX2X_MSG_SP | NETIF_MSG_IFUP,
4275                    "mapping priority %d to tc %d\n",
4276                    outer_prio, bp->prio_to_cos[outer_prio]);
4277         }
4278
4279         /* Use this configuration to differentiate tc0 from other COSes
4280            This can be used for ets or pfc, and save the effort of setting
4281            up a multio class queue disc or negotiating DCBX with a switch
4282         netdev_set_prio_tc_map(dev, 0, 0);
4283         DP(BNX2X_MSG_SP, "mapping priority %d to tc %d\n", 0, 0);
4284         for (prio = 1; prio < 16; prio++) {
4285                 netdev_set_prio_tc_map(dev, prio, 1);
4286                 DP(BNX2X_MSG_SP, "mapping priority %d to tc %d\n", prio, 1);
4287         } */
4288
4289         /* configure traffic class to transmission queue mapping */
4290         for (cos = 0; cos < bp->max_cos; cos++) {
4291                 count = BNX2X_NUM_ETH_QUEUES(bp);
4292                 offset = cos * BNX2X_NUM_NON_CNIC_QUEUES(bp);
4293                 netdev_set_tc_queue(dev, cos, count, offset);
4294                 DP(BNX2X_MSG_SP | NETIF_MSG_IFUP,
4295                    "mapping tc %d to offset %d count %d\n",
4296                    cos, offset, count);
4297         }
4298
4299         return 0;
4300 }
4301
4302 int __bnx2x_setup_tc(struct net_device *dev, enum tc_setup_type type,
4303                      void *type_data)
4304 {
4305         struct tc_mqprio_qopt *mqprio = type_data;
4306
4307         if (type != TC_SETUP_QDISC_MQPRIO)
4308                 return -EOPNOTSUPP;
4309
4310         mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
4311
4312         return bnx2x_setup_tc(dev, mqprio->num_tc);
4313 }
4314
4315 /* called with rtnl_lock */
4316 int bnx2x_change_mac_addr(struct net_device *dev, void *p)
4317 {
4318         struct sockaddr *addr = p;
4319         struct bnx2x *bp = netdev_priv(dev);
4320         int rc = 0;
4321
4322         if (!is_valid_ether_addr(addr->sa_data)) {
4323                 BNX2X_ERR("Requested MAC address is not valid\n");
4324                 return -EINVAL;
4325         }
4326
4327         if (IS_MF_STORAGE_ONLY(bp)) {
4328                 BNX2X_ERR("Can't change address on STORAGE ONLY function\n");
4329                 return -EINVAL;
4330         }
4331
4332         if (netif_running(dev))  {
4333                 rc = bnx2x_set_eth_mac(bp, false);
4334                 if (rc)
4335                         return rc;
4336         }
4337
4338         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
4339
4340         if (netif_running(dev))
4341                 rc = bnx2x_set_eth_mac(bp, true);
4342
4343         if (IS_PF(bp) && SHMEM2_HAS(bp, curr_cfg))
4344                 SHMEM2_WR(bp, curr_cfg, CURR_CFG_MET_OS);
4345
4346         return rc;
4347 }
4348
4349 static void bnx2x_free_fp_mem_at(struct bnx2x *bp, int fp_index)
4350 {
4351         union host_hc_status_block *sb = &bnx2x_fp(bp, fp_index, status_blk);
4352         struct bnx2x_fastpath *fp = &bp->fp[fp_index];
4353         u8 cos;
4354
4355         /* Common */
4356
4357         if (IS_FCOE_IDX(fp_index)) {
4358                 memset(sb, 0, sizeof(union host_hc_status_block));
4359                 fp->status_blk_mapping = 0;
4360         } else {
4361                 /* status blocks */
4362                 if (!CHIP_IS_E1x(bp))
4363                         BNX2X_PCI_FREE(sb->e2_sb,
4364                                        bnx2x_fp(bp, fp_index,
4365                                                 status_blk_mapping),
4366                                        sizeof(struct host_hc_status_block_e2));
4367                 else
4368                         BNX2X_PCI_FREE(sb->e1x_sb,
4369                                        bnx2x_fp(bp, fp_index,
4370                                                 status_blk_mapping),
4371                                        sizeof(struct host_hc_status_block_e1x));
4372         }
4373
4374         /* Rx */
4375         if (!skip_rx_queue(bp, fp_index)) {
4376                 bnx2x_free_rx_bds(fp);
4377
4378                 /* fastpath rx rings: rx_buf rx_desc rx_comp */
4379                 BNX2X_FREE(bnx2x_fp(bp, fp_index, rx_buf_ring));
4380                 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_desc_ring),
4381                                bnx2x_fp(bp, fp_index, rx_desc_mapping),
4382                                sizeof(struct eth_rx_bd) * NUM_RX_BD);
4383
4384                 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_comp_ring),
4385                                bnx2x_fp(bp, fp_index, rx_comp_mapping),
4386                                sizeof(struct eth_fast_path_rx_cqe) *
4387                                NUM_RCQ_BD);
4388
4389                 /* SGE ring */
4390                 BNX2X_FREE(bnx2x_fp(bp, fp_index, rx_page_ring));
4391                 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_sge_ring),
4392                                bnx2x_fp(bp, fp_index, rx_sge_mapping),
4393                                BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
4394         }
4395
4396         /* Tx */
4397         if (!skip_tx_queue(bp, fp_index)) {
4398                 /* fastpath tx rings: tx_buf tx_desc */
4399                 for_each_cos_in_tx_queue(fp, cos) {
4400                         struct bnx2x_fp_txdata *txdata = fp->txdata_ptr[cos];
4401
4402                         DP(NETIF_MSG_IFDOWN,
4403                            "freeing tx memory of fp %d cos %d cid %d\n",
4404                            fp_index, cos, txdata->cid);
4405
4406                         BNX2X_FREE(txdata->tx_buf_ring);
4407                         BNX2X_PCI_FREE(txdata->tx_desc_ring,
4408                                 txdata->tx_desc_mapping,
4409                                 sizeof(union eth_tx_bd_types) * NUM_TX_BD);
4410                 }
4411         }
4412         /* end of fastpath */
4413 }
4414
4415 static void bnx2x_free_fp_mem_cnic(struct bnx2x *bp)
4416 {
4417         int i;
4418         for_each_cnic_queue(bp, i)
4419                 bnx2x_free_fp_mem_at(bp, i);
4420 }
4421
4422 void bnx2x_free_fp_mem(struct bnx2x *bp)
4423 {
4424         int i;
4425         for_each_eth_queue(bp, i)
4426                 bnx2x_free_fp_mem_at(bp, i);
4427 }
4428
4429 static void set_sb_shortcuts(struct bnx2x *bp, int index)
4430 {
4431         union host_hc_status_block status_blk = bnx2x_fp(bp, index, status_blk);
4432         if (!CHIP_IS_E1x(bp)) {
4433                 bnx2x_fp(bp, index, sb_index_values) =
4434                         (__le16 *)status_blk.e2_sb->sb.index_values;
4435                 bnx2x_fp(bp, index, sb_running_index) =
4436                         (__le16 *)status_blk.e2_sb->sb.running_index;
4437         } else {
4438                 bnx2x_fp(bp, index, sb_index_values) =
4439                         (__le16 *)status_blk.e1x_sb->sb.index_values;
4440                 bnx2x_fp(bp, index, sb_running_index) =
4441                         (__le16 *)status_blk.e1x_sb->sb.running_index;
4442         }
4443 }
4444
4445 /* Returns the number of actually allocated BDs */
4446 static int bnx2x_alloc_rx_bds(struct bnx2x_fastpath *fp,
4447                               int rx_ring_size)
4448 {
4449         struct bnx2x *bp = fp->bp;
4450         u16 ring_prod, cqe_ring_prod;
4451         int i, failure_cnt = 0;
4452
4453         fp->rx_comp_cons = 0;
4454         cqe_ring_prod = ring_prod = 0;
4455
4456         /* This routine is called only during fo init so
4457          * fp->eth_q_stats.rx_skb_alloc_failed = 0
4458          */
4459         for (i = 0; i < rx_ring_size; i++) {
4460                 if (bnx2x_alloc_rx_data(bp, fp, ring_prod, GFP_KERNEL) < 0) {
4461                         failure_cnt++;
4462                         continue;
4463                 }
4464                 ring_prod = NEXT_RX_IDX(ring_prod);
4465                 cqe_ring_prod = NEXT_RCQ_IDX(cqe_ring_prod);
4466                 WARN_ON(ring_prod <= (i - failure_cnt));
4467         }
4468
4469         if (failure_cnt)
4470                 BNX2X_ERR("was only able to allocate %d rx skbs on queue[%d]\n",
4471                           i - failure_cnt, fp->index);
4472
4473         fp->rx_bd_prod = ring_prod;
4474         /* Limit the CQE producer by the CQE ring size */
4475         fp->rx_comp_prod = min_t(u16, NUM_RCQ_RINGS*RCQ_DESC_CNT,
4476                                cqe_ring_prod);
4477
4478         bnx2x_fp_stats(bp, fp)->eth_q_stats.rx_skb_alloc_failed += failure_cnt;
4479
4480         return i - failure_cnt;
4481 }
4482
4483 static void bnx2x_set_next_page_rx_cq(struct bnx2x_fastpath *fp)
4484 {
4485         int i;
4486
4487         for (i = 1; i <= NUM_RCQ_RINGS; i++) {
4488                 struct eth_rx_cqe_next_page *nextpg;
4489
4490                 nextpg = (struct eth_rx_cqe_next_page *)
4491                         &fp->rx_comp_ring[RCQ_DESC_CNT * i - 1];
4492                 nextpg->addr_hi =
4493                         cpu_to_le32(U64_HI(fp->rx_comp_mapping +
4494                                    BCM_PAGE_SIZE*(i % NUM_RCQ_RINGS)));
4495                 nextpg->addr_lo =
4496                         cpu_to_le32(U64_LO(fp->rx_comp_mapping +
4497                                    BCM_PAGE_SIZE*(i % NUM_RCQ_RINGS)));
4498         }
4499 }
4500
4501 static int bnx2x_alloc_fp_mem_at(struct bnx2x *bp, int index)
4502 {
4503         union host_hc_status_block *sb;
4504         struct bnx2x_fastpath *fp = &bp->fp[index];
4505         int ring_size = 0;
4506         u8 cos;
4507         int rx_ring_size = 0;
4508
4509         if (!bp->rx_ring_size && IS_MF_STORAGE_ONLY(bp)) {
4510                 rx_ring_size = MIN_RX_SIZE_NONTPA;
4511                 bp->rx_ring_size = rx_ring_size;
4512         } else if (!bp->rx_ring_size) {
4513                 rx_ring_size = MAX_RX_AVAIL/BNX2X_NUM_RX_QUEUES(bp);
4514
4515                 if (CHIP_IS_E3(bp)) {
4516                         u32 cfg = SHMEM_RD(bp,
4517                                            dev_info.port_hw_config[BP_PORT(bp)].
4518                                            default_cfg);
4519
4520                         /* Decrease ring size for 1G functions */
4521                         if ((cfg & PORT_HW_CFG_NET_SERDES_IF_MASK) ==
4522                             PORT_HW_CFG_NET_SERDES_IF_SGMII)
4523                                 rx_ring_size /= 10;
4524                 }
4525
4526                 /* allocate at least number of buffers required by FW */
4527                 rx_ring_size = max_t(int, bp->disable_tpa ? MIN_RX_SIZE_NONTPA :
4528                                      MIN_RX_SIZE_TPA, rx_ring_size);
4529
4530                 bp->rx_ring_size = rx_ring_size;
4531         } else /* if rx_ring_size specified - use it */
4532                 rx_ring_size = bp->rx_ring_size;
4533
4534         DP(BNX2X_MSG_SP, "calculated rx_ring_size %d\n", rx_ring_size);
4535
4536         /* Common */
4537         sb = &bnx2x_fp(bp, index, status_blk);
4538
4539         if (!IS_FCOE_IDX(index)) {
4540                 /* status blocks */
4541                 if (!CHIP_IS_E1x(bp)) {
4542                         sb->e2_sb = BNX2X_PCI_ALLOC(&bnx2x_fp(bp, index, status_blk_mapping),
4543                                                     sizeof(struct host_hc_status_block_e2));
4544                         if (!sb->e2_sb)
4545                                 goto alloc_mem_err;
4546                 } else {
4547                         sb->e1x_sb = BNX2X_PCI_ALLOC(&bnx2x_fp(bp, index, status_blk_mapping),
4548                                                      sizeof(struct host_hc_status_block_e1x));
4549                         if (!sb->e1x_sb)
4550                                 goto alloc_mem_err;
4551                 }
4552         }
4553
4554         /* FCoE Queue uses Default SB and doesn't ACK the SB, thus no need to
4555          * set shortcuts for it.
4556          */
4557         if (!IS_FCOE_IDX(index))
4558                 set_sb_shortcuts(bp, index);
4559
4560         /* Tx */
4561         if (!skip_tx_queue(bp, index)) {
4562                 /* fastpath tx rings: tx_buf tx_desc */
4563                 for_each_cos_in_tx_queue(fp, cos) {
4564                         struct bnx2x_fp_txdata *txdata = fp->txdata_ptr[cos];
4565
4566                         DP(NETIF_MSG_IFUP,
4567                            "allocating tx memory of fp %d cos %d\n",
4568                            index, cos);
4569
4570                         txdata->tx_buf_ring = kcalloc(NUM_TX_BD,
4571                                                       sizeof(struct sw_tx_bd),
4572                                                       GFP_KERNEL);
4573                         if (!txdata->tx_buf_ring)
4574                                 goto alloc_mem_err;
4575                         txdata->tx_desc_ring = BNX2X_PCI_ALLOC(&txdata->tx_desc_mapping,
4576                                                                sizeof(union eth_tx_bd_types) * NUM_TX_BD);
4577                         if (!txdata->tx_desc_ring)
4578                                 goto alloc_mem_err;
4579                 }
4580         }
4581
4582         /* Rx */
4583         if (!skip_rx_queue(bp, index)) {
4584                 /* fastpath rx rings: rx_buf rx_desc rx_comp */
4585                 bnx2x_fp(bp, index, rx_buf_ring) =
4586                         kcalloc(NUM_RX_BD, sizeof(struct sw_rx_bd), GFP_KERNEL);
4587                 if (!bnx2x_fp(bp, index, rx_buf_ring))
4588                         goto alloc_mem_err;
4589                 bnx2x_fp(bp, index, rx_desc_ring) =
4590                         BNX2X_PCI_ALLOC(&bnx2x_fp(bp, index, rx_desc_mapping),
4591                                         sizeof(struct eth_rx_bd) * NUM_RX_BD);
4592                 if (!bnx2x_fp(bp, index, rx_desc_ring))
4593                         goto alloc_mem_err;
4594
4595                 /* Seed all CQEs by 1s */
4596                 bnx2x_fp(bp, index, rx_comp_ring) =
4597                         BNX2X_PCI_FALLOC(&bnx2x_fp(bp, index, rx_comp_mapping),
4598                                          sizeof(struct eth_fast_path_rx_cqe) * NUM_RCQ_BD);
4599                 if (!bnx2x_fp(bp, index, rx_comp_ring))
4600                         goto alloc_mem_err;
4601
4602                 /* SGE ring */
4603                 bnx2x_fp(bp, index, rx_page_ring) =
4604                         kcalloc(NUM_RX_SGE, sizeof(struct sw_rx_page),
4605                                 GFP_KERNEL);
4606                 if (!bnx2x_fp(bp, index, rx_page_ring))
4607                         goto alloc_mem_err;
4608                 bnx2x_fp(bp, index, rx_sge_ring) =
4609                         BNX2X_PCI_ALLOC(&bnx2x_fp(bp, index, rx_sge_mapping),
4610                                         BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
4611                 if (!bnx2x_fp(bp, index, rx_sge_ring))
4612                         goto alloc_mem_err;
4613                 /* RX BD ring */
4614                 bnx2x_set_next_page_rx_bd(fp);
4615
4616                 /* CQ ring */
4617                 bnx2x_set_next_page_rx_cq(fp);
4618
4619                 /* BDs */
4620                 ring_size = bnx2x_alloc_rx_bds(fp, rx_ring_size);
4621                 if (ring_size < rx_ring_size)
4622                         goto alloc_mem_err;
4623         }
4624
4625         return 0;
4626
4627 /* handles low memory cases */
4628 alloc_mem_err:
4629         BNX2X_ERR("Unable to allocate full memory for queue %d (size %d)\n",
4630                                                 index, ring_size);
4631         /* FW will drop all packets if queue is not big enough,
4632          * In these cases we disable the queue
4633          * Min size is different for OOO, TPA and non-TPA queues
4634          */
4635         if (ring_size < (fp->mode == TPA_MODE_DISABLED ?
4636                                 MIN_RX_SIZE_NONTPA : MIN_RX_SIZE_TPA)) {
4637                         /* release memory allocated for this queue */
4638                         bnx2x_free_fp_mem_at(bp, index);
4639                         return -ENOMEM;
4640         }
4641         return 0;
4642 }
4643
4644 static int bnx2x_alloc_fp_mem_cnic(struct bnx2x *bp)
4645 {
4646         if (!NO_FCOE(bp))
4647                 /* FCoE */
4648                 if (bnx2x_alloc_fp_mem_at(bp, FCOE_IDX(bp)))
4649                         /* we will fail load process instead of mark
4650                          * NO_FCOE_FLAG
4651                          */
4652                         return -ENOMEM;
4653
4654         return 0;
4655 }
4656
4657 static int bnx2x_alloc_fp_mem(struct bnx2x *bp)
4658 {
4659         int i;
4660
4661         /* 1. Allocate FP for leading - fatal if error
4662          * 2. Allocate RSS - fix number of queues if error
4663          */
4664
4665         /* leading */
4666         if (bnx2x_alloc_fp_mem_at(bp, 0))
4667                 return -ENOMEM;
4668
4669         /* RSS */
4670         for_each_nondefault_eth_queue(bp, i)
4671                 if (bnx2x_alloc_fp_mem_at(bp, i))
4672                         break;
4673
4674         /* handle memory failures */
4675         if (i != BNX2X_NUM_ETH_QUEUES(bp)) {
4676                 int delta = BNX2X_NUM_ETH_QUEUES(bp) - i;
4677
4678                 WARN_ON(delta < 0);
4679                 bnx2x_shrink_eth_fp(bp, delta);
4680                 if (CNIC_SUPPORT(bp))
4681                         /* move non eth FPs next to last eth FP
4682                          * must be done in that order
4683                          * FCOE_IDX < FWD_IDX < OOO_IDX
4684                          */
4685
4686                         /* move FCoE fp even NO_FCOE_FLAG is on */
4687                         bnx2x_move_fp(bp, FCOE_IDX(bp), FCOE_IDX(bp) - delta);
4688                 bp->num_ethernet_queues -= delta;
4689                 bp->num_queues = bp->num_ethernet_queues +
4690                                  bp->num_cnic_queues;
4691                 BNX2X_ERR("Adjusted num of queues from %d to %d\n",
4692                           bp->num_queues + delta, bp->num_queues);
4693         }
4694
4695         return 0;
4696 }
4697
4698 void bnx2x_free_mem_bp(struct bnx2x *bp)
4699 {
4700         int i;
4701
4702         for (i = 0; i < bp->fp_array_size; i++)
4703                 kfree(bp->fp[i].tpa_info);
4704         kfree(bp->fp);
4705         kfree(bp->sp_objs);
4706         kfree(bp->fp_stats);
4707         kfree(bp->bnx2x_txq);
4708         kfree(bp->msix_table);
4709         kfree(bp->ilt);
4710 }
4711
4712 int bnx2x_alloc_mem_bp(struct bnx2x *bp)
4713 {
4714         struct bnx2x_fastpath *fp;
4715         struct msix_entry *tbl;
4716         struct bnx2x_ilt *ilt;
4717         int msix_table_size = 0;
4718         int fp_array_size, txq_array_size;
4719         int i;
4720
4721         /*
4722          * The biggest MSI-X table we might need is as a maximum number of fast
4723          * path IGU SBs plus default SB (for PF only).
4724          */
4725         msix_table_size = bp->igu_sb_cnt;
4726         if (IS_PF(bp))
4727                 msix_table_size++;
4728         BNX2X_DEV_INFO("msix_table_size %d\n", msix_table_size);
4729
4730         /* fp array: RSS plus CNIC related L2 queues */
4731         fp_array_size = BNX2X_MAX_RSS_COUNT(bp) + CNIC_SUPPORT(bp);
4732         bp->fp_array_size = fp_array_size;
4733         BNX2X_DEV_INFO("fp_array_size %d\n", bp->fp_array_size);
4734
4735         fp = kcalloc(bp->fp_array_size, sizeof(*fp), GFP_KERNEL);
4736         if (!fp)
4737                 goto alloc_err;
4738         for (i = 0; i < bp->fp_array_size; i++) {
4739                 fp[i].tpa_info =
4740                         kcalloc(ETH_MAX_AGGREGATION_QUEUES_E1H_E2,
4741                                 sizeof(struct bnx2x_agg_info), GFP_KERNEL);
4742                 if (!(fp[i].tpa_info))
4743                         goto alloc_err;
4744         }
4745
4746         bp->fp = fp;
4747
4748         /* allocate sp objs */
4749         bp->sp_objs = kcalloc(bp->fp_array_size, sizeof(struct bnx2x_sp_objs),
4750                               GFP_KERNEL);
4751         if (!bp->sp_objs)
4752                 goto alloc_err;
4753
4754         /* allocate fp_stats */
4755         bp->fp_stats = kcalloc(bp->fp_array_size, sizeof(struct bnx2x_fp_stats),
4756                                GFP_KERNEL);
4757         if (!bp->fp_stats)
4758                 goto alloc_err;
4759
4760         /* Allocate memory for the transmission queues array */
4761         txq_array_size =
4762                 BNX2X_MAX_RSS_COUNT(bp) * BNX2X_MULTI_TX_COS + CNIC_SUPPORT(bp);
4763         BNX2X_DEV_INFO("txq_array_size %d", txq_array_size);
4764
4765         bp->bnx2x_txq = kcalloc(txq_array_size, sizeof(struct bnx2x_fp_txdata),
4766                                 GFP_KERNEL);
4767         if (!bp->bnx2x_txq)
4768                 goto alloc_err;
4769
4770         /* msix table */
4771         tbl = kcalloc(msix_table_size, sizeof(*tbl), GFP_KERNEL);
4772         if (!tbl)
4773                 goto alloc_err;
4774         bp->msix_table = tbl;
4775
4776         /* ilt */
4777         ilt = kzalloc(sizeof(*ilt), GFP_KERNEL);
4778         if (!ilt)
4779                 goto alloc_err;
4780         bp->ilt = ilt;
4781
4782         return 0;
4783 alloc_err:
4784         bnx2x_free_mem_bp(bp);
4785         return -ENOMEM;
4786 }
4787
4788 int bnx2x_reload_if_running(struct net_device *dev)
4789 {
4790         struct bnx2x *bp = netdev_priv(dev);
4791
4792         if (unlikely(!netif_running(dev)))
4793                 return 0;
4794
4795         bnx2x_nic_unload(bp, UNLOAD_NORMAL, true);
4796         return bnx2x_nic_load(bp, LOAD_NORMAL);
4797 }
4798
4799 int bnx2x_get_cur_phy_idx(struct bnx2x *bp)
4800 {
4801         u32 sel_phy_idx = 0;
4802         if (bp->link_params.num_phys <= 1)
4803                 return INT_PHY;
4804
4805         if (bp->link_vars.link_up) {
4806                 sel_phy_idx = EXT_PHY1;
4807                 /* In case link is SERDES, check if the EXT_PHY2 is the one */
4808                 if ((bp->link_vars.link_status & LINK_STATUS_SERDES_LINK) &&
4809                     (bp->link_params.phy[EXT_PHY2].supported & SUPPORTED_FIBRE))
4810                         sel_phy_idx = EXT_PHY2;
4811         } else {
4812
4813                 switch (bnx2x_phy_selection(&bp->link_params)) {
4814                 case PORT_HW_CFG_PHY_SELECTION_HARDWARE_DEFAULT:
4815                 case PORT_HW_CFG_PHY_SELECTION_FIRST_PHY:
4816                 case PORT_HW_CFG_PHY_SELECTION_FIRST_PHY_PRIORITY:
4817                        sel_phy_idx = EXT_PHY1;
4818                        break;
4819                 case PORT_HW_CFG_PHY_SELECTION_SECOND_PHY:
4820                 case PORT_HW_CFG_PHY_SELECTION_SECOND_PHY_PRIORITY:
4821                        sel_phy_idx = EXT_PHY2;
4822                        break;
4823                 }
4824         }
4825
4826         return sel_phy_idx;
4827 }
4828 int bnx2x_get_link_cfg_idx(struct bnx2x *bp)
4829 {
4830         u32 sel_phy_idx = bnx2x_get_cur_phy_idx(bp);
4831         /*
4832          * The selected activated PHY is always after swapping (in case PHY
4833          * swapping is enabled). So when swapping is enabled, we need to reverse
4834          * the configuration
4835          */
4836
4837         if (bp->link_params.multi_phy_config &
4838             PORT_HW_CFG_PHY_SWAPPED_ENABLED) {
4839                 if (sel_phy_idx == EXT_PHY1)
4840                         sel_phy_idx = EXT_PHY2;
4841                 else if (sel_phy_idx == EXT_PHY2)
4842                         sel_phy_idx = EXT_PHY1;
4843         }
4844         return LINK_CONFIG_IDX(sel_phy_idx);
4845 }
4846
4847 #ifdef NETDEV_FCOE_WWNN
4848 int bnx2x_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type)
4849 {
4850         struct bnx2x *bp = netdev_priv(dev);
4851         struct cnic_eth_dev *cp = &bp->cnic_eth_dev;
4852
4853         switch (type) {
4854         case NETDEV_FCOE_WWNN:
4855                 *wwn = HILO_U64(cp->fcoe_wwn_node_name_hi,
4856                                 cp->fcoe_wwn_node_name_lo);
4857                 break;
4858         case NETDEV_FCOE_WWPN:
4859                 *wwn = HILO_U64(cp->fcoe_wwn_port_name_hi,
4860                                 cp->fcoe_wwn_port_name_lo);
4861                 break;
4862         default:
4863                 BNX2X_ERR("Wrong WWN type requested - %d\n", type);
4864                 return -EINVAL;
4865         }
4866
4867         return 0;
4868 }
4869 #endif
4870
4871 /* called with rtnl_lock */
4872 int bnx2x_change_mtu(struct net_device *dev, int new_mtu)
4873 {
4874         struct bnx2x *bp = netdev_priv(dev);
4875
4876         if (pci_num_vf(bp->pdev)) {
4877                 DP(BNX2X_MSG_IOV, "VFs are enabled, can not change MTU\n");
4878                 return -EPERM;
4879         }
4880
4881         if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
4882                 BNX2X_ERR("Can't perform change MTU during parity recovery\n");
4883                 return -EAGAIN;
4884         }
4885
4886         /* This does not race with packet allocation
4887          * because the actual alloc size is
4888          * only updated as part of load
4889          */
4890         dev->mtu = new_mtu;
4891
4892         if (!bnx2x_mtu_allows_gro(new_mtu))
4893                 dev->features &= ~NETIF_F_GRO_HW;
4894
4895         if (IS_PF(bp) && SHMEM2_HAS(bp, curr_cfg))
4896                 SHMEM2_WR(bp, curr_cfg, CURR_CFG_MET_OS);
4897
4898         return bnx2x_reload_if_running(dev);
4899 }
4900
4901 netdev_features_t bnx2x_fix_features(struct net_device *dev,
4902                                      netdev_features_t features)
4903 {
4904         struct bnx2x *bp = netdev_priv(dev);
4905
4906         if (pci_num_vf(bp->pdev)) {
4907                 netdev_features_t changed = dev->features ^ features;
4908
4909                 /* Revert the requested changes in features if they
4910                  * would require internal reload of PF in bnx2x_set_features().
4911                  */
4912                 if (!(features & NETIF_F_RXCSUM) && !bp->disable_tpa) {
4913                         features &= ~NETIF_F_RXCSUM;
4914                         features |= dev->features & NETIF_F_RXCSUM;
4915                 }
4916
4917                 if (changed & NETIF_F_LOOPBACK) {
4918                         features &= ~NETIF_F_LOOPBACK;
4919                         features |= dev->features & NETIF_F_LOOPBACK;
4920                 }
4921         }
4922
4923         /* TPA requires Rx CSUM offloading */
4924         if (!(features & NETIF_F_RXCSUM))
4925                 features &= ~NETIF_F_LRO;
4926
4927         if (!(features & NETIF_F_GRO) || !bnx2x_mtu_allows_gro(dev->mtu))
4928                 features &= ~NETIF_F_GRO_HW;
4929         if (features & NETIF_F_GRO_HW)
4930                 features &= ~NETIF_F_LRO;
4931
4932         return features;
4933 }
4934
4935 int bnx2x_set_features(struct net_device *dev, netdev_features_t features)
4936 {
4937         struct bnx2x *bp = netdev_priv(dev);
4938         netdev_features_t changes = features ^ dev->features;
4939         bool bnx2x_reload = false;
4940         int rc;
4941
4942         /* VFs or non SRIOV PFs should be able to change loopback feature */
4943         if (!pci_num_vf(bp->pdev)) {
4944                 if (features & NETIF_F_LOOPBACK) {
4945                         if (bp->link_params.loopback_mode != LOOPBACK_BMAC) {
4946                                 bp->link_params.loopback_mode = LOOPBACK_BMAC;
4947                                 bnx2x_reload = true;
4948                         }
4949                 } else {
4950                         if (bp->link_params.loopback_mode != LOOPBACK_NONE) {
4951                                 bp->link_params.loopback_mode = LOOPBACK_NONE;
4952                                 bnx2x_reload = true;
4953                         }
4954                 }
4955         }
4956
4957         /* Don't care about GRO changes */
4958         changes &= ~NETIF_F_GRO;
4959
4960         if (changes)
4961                 bnx2x_reload = true;
4962
4963         if (bnx2x_reload) {
4964                 if (bp->recovery_state == BNX2X_RECOVERY_DONE) {
4965                         dev->features = features;
4966                         rc = bnx2x_reload_if_running(dev);
4967                         return rc ? rc : 1;
4968                 }
4969                 /* else: bnx2x_nic_load() will be called at end of recovery */
4970         }
4971
4972         return 0;
4973 }
4974
4975 void bnx2x_tx_timeout(struct net_device *dev, unsigned int txqueue)
4976 {
4977         struct bnx2x *bp = netdev_priv(dev);
4978
4979         /* We want the information of the dump logged,
4980          * but calling bnx2x_panic() would kill all chances of recovery.
4981          */
4982         if (!bp->panic)
4983 #ifndef BNX2X_STOP_ON_ERROR
4984                 bnx2x_panic_dump(bp, false);
4985 #else
4986                 bnx2x_panic();
4987 #endif
4988
4989         /* This allows the netif to be shutdown gracefully before resetting */
4990         bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_TX_TIMEOUT, 0);
4991 }
4992
4993 static int __maybe_unused bnx2x_suspend(struct device *dev_d)
4994 {
4995         struct pci_dev *pdev = to_pci_dev(dev_d);
4996         struct net_device *dev = pci_get_drvdata(pdev);
4997         struct bnx2x *bp;
4998
4999         if (!dev) {
5000                 dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n");
5001                 return -ENODEV;
5002         }
5003         bp = netdev_priv(dev);
5004
5005         rtnl_lock();
5006
5007         if (!netif_running(dev)) {
5008                 rtnl_unlock();
5009                 return 0;
5010         }
5011
5012         netif_device_detach(dev);
5013
5014         bnx2x_nic_unload(bp, UNLOAD_CLOSE, false);
5015
5016         rtnl_unlock();
5017
5018         return 0;
5019 }
5020
5021 static int __maybe_unused bnx2x_resume(struct device *dev_d)
5022 {
5023         struct pci_dev *pdev = to_pci_dev(dev_d);
5024         struct net_device *dev = pci_get_drvdata(pdev);
5025         struct bnx2x *bp;
5026         int rc;
5027
5028         if (!dev) {
5029                 dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n");
5030                 return -ENODEV;
5031         }
5032         bp = netdev_priv(dev);
5033
5034         if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
5035                 BNX2X_ERR("Handling parity error recovery. Try again later\n");
5036                 return -EAGAIN;
5037         }
5038
5039         rtnl_lock();
5040
5041         if (!netif_running(dev)) {
5042                 rtnl_unlock();
5043                 return 0;
5044         }
5045
5046         netif_device_attach(dev);
5047
5048         rc = bnx2x_nic_load(bp, LOAD_OPEN);
5049
5050         rtnl_unlock();
5051
5052         return rc;
5053 }
5054
5055 SIMPLE_DEV_PM_OPS(bnx2x_pm_ops, bnx2x_suspend, bnx2x_resume);
5056
5057 void bnx2x_set_ctx_validation(struct bnx2x *bp, struct eth_context *cxt,
5058                               u32 cid)
5059 {
5060         if (!cxt) {
5061                 BNX2X_ERR("bad context pointer %p\n", cxt);
5062                 return;
5063         }
5064
5065         /* ustorm cxt validation */
5066         cxt->ustorm_ag_context.cdu_usage =
5067                 CDU_RSRVD_VALUE_TYPE_A(HW_CID(bp, cid),
5068                         CDU_REGION_NUMBER_UCM_AG, ETH_CONNECTION_TYPE);
5069         /* xcontext validation */
5070         cxt->xstorm_ag_context.cdu_reserved =
5071                 CDU_RSRVD_VALUE_TYPE_A(HW_CID(bp, cid),
5072                         CDU_REGION_NUMBER_XCM_AG, ETH_CONNECTION_TYPE);
5073 }
5074
5075 static void storm_memset_hc_timeout(struct bnx2x *bp, u8 port,
5076                                     u8 fw_sb_id, u8 sb_index,
5077                                     u8 ticks)
5078 {
5079         u32 addr = BAR_CSTRORM_INTMEM +
5080                    CSTORM_STATUS_BLOCK_DATA_TIMEOUT_OFFSET(fw_sb_id, sb_index);
5081         REG_WR8(bp, addr, ticks);
5082         DP(NETIF_MSG_IFUP,
5083            "port %x fw_sb_id %d sb_index %d ticks %d\n",
5084            port, fw_sb_id, sb_index, ticks);
5085 }
5086
5087 static void storm_memset_hc_disable(struct bnx2x *bp, u8 port,
5088                                     u16 fw_sb_id, u8 sb_index,
5089                                     u8 disable)
5090 {
5091         u32 enable_flag = disable ? 0 : (1 << HC_INDEX_DATA_HC_ENABLED_SHIFT);
5092         u32 addr = BAR_CSTRORM_INTMEM +
5093                    CSTORM_STATUS_BLOCK_DATA_FLAGS_OFFSET(fw_sb_id, sb_index);
5094         u8 flags = REG_RD8(bp, addr);
5095         /* clear and set */
5096         flags &= ~HC_INDEX_DATA_HC_ENABLED;
5097         flags |= enable_flag;
5098         REG_WR8(bp, addr, flags);
5099         DP(NETIF_MSG_IFUP,
5100            "port %x fw_sb_id %d sb_index %d disable %d\n",
5101            port, fw_sb_id, sb_index, disable);
5102 }
5103
5104 void bnx2x_update_coalesce_sb_index(struct bnx2x *bp, u8 fw_sb_id,
5105                                     u8 sb_index, u8 disable, u16 usec)
5106 {
5107         int port = BP_PORT(bp);
5108         u8 ticks = usec / BNX2X_BTR;
5109
5110         storm_memset_hc_timeout(bp, port, fw_sb_id, sb_index, ticks);
5111
5112         disable = disable ? 1 : (usec ? 0 : 1);
5113         storm_memset_hc_disable(bp, port, fw_sb_id, sb_index, disable);
5114 }
5115
5116 void bnx2x_schedule_sp_rtnl(struct bnx2x *bp, enum sp_rtnl_flag flag,
5117                             u32 verbose)
5118 {
5119         smp_mb__before_atomic();
5120         set_bit(flag, &bp->sp_rtnl_state);
5121         smp_mb__after_atomic();
5122         DP((BNX2X_MSG_SP | verbose), "Scheduling sp_rtnl task [Flag: %d]\n",
5123            flag);
5124         schedule_delayed_work(&bp->sp_rtnl_task, 0);
5125 }