1 /* bnx2x_cmn.c: QLogic Everest network driver.
3 * Copyright (c) 2007-2013 Broadcom Corporation
4 * Copyright (c) 2014 QLogic Corporation
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.
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
20 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
22 #include <linux/etherdevice.h>
23 #include <linux/if_vlan.h>
24 #include <linux/interrupt.h>
26 #include <linux/crash_dump.h>
29 #include <net/ip6_checksum.h>
30 #include <net/busy_poll.h>
31 #include <linux/prefetch.h>
32 #include "bnx2x_cmn.h"
33 #include "bnx2x_init.h"
36 static void bnx2x_free_fp_mem_cnic(struct bnx2x *bp);
37 static int bnx2x_alloc_fp_mem_cnic(struct bnx2x *bp);
38 static int bnx2x_alloc_fp_mem(struct bnx2x *bp);
39 static int bnx2x_poll(struct napi_struct *napi, int budget);
41 static void bnx2x_add_all_napi_cnic(struct bnx2x *bp)
45 /* Add NAPI objects */
46 for_each_rx_queue_cnic(bp, i) {
47 netif_napi_add(bp->dev, &bnx2x_fp(bp, i, napi),
48 bnx2x_poll, NAPI_POLL_WEIGHT);
49 napi_hash_add(&bnx2x_fp(bp, i, napi));
53 static void bnx2x_add_all_napi(struct bnx2x *bp)
57 /* Add NAPI objects */
58 for_each_eth_queue(bp, i) {
59 netif_napi_add(bp->dev, &bnx2x_fp(bp, i, napi),
60 bnx2x_poll, NAPI_POLL_WEIGHT);
61 napi_hash_add(&bnx2x_fp(bp, i, napi));
65 static int bnx2x_calc_num_queues(struct bnx2x *bp)
67 int nq = bnx2x_num_queues ? : netif_get_num_default_rss_queues();
69 /* Reduce memory usage in kdump environment by using only one queue */
70 if (is_kdump_kernel())
73 nq = clamp(nq, 1, BNX2X_MAX_QUEUES(bp));
78 * bnx2x_move_fp - move content of the fastpath structure.
81 * @from: source FP index
82 * @to: destination FP index
84 * Makes sure the contents of the bp->fp[to].napi is kept
85 * intact. This is done by first copying the napi struct from
86 * the target to the source, and then mem copying the entire
87 * source onto the target. Update txdata pointers and related
90 static inline void bnx2x_move_fp(struct bnx2x *bp, int from, int to)
92 struct bnx2x_fastpath *from_fp = &bp->fp[from];
93 struct bnx2x_fastpath *to_fp = &bp->fp[to];
94 struct bnx2x_sp_objs *from_sp_objs = &bp->sp_objs[from];
95 struct bnx2x_sp_objs *to_sp_objs = &bp->sp_objs[to];
96 struct bnx2x_fp_stats *from_fp_stats = &bp->fp_stats[from];
97 struct bnx2x_fp_stats *to_fp_stats = &bp->fp_stats[to];
98 int old_max_eth_txqs, new_max_eth_txqs;
99 int old_txdata_index = 0, new_txdata_index = 0;
100 struct bnx2x_agg_info *old_tpa_info = to_fp->tpa_info;
102 /* Copy the NAPI object as it has been already initialized */
103 from_fp->napi = to_fp->napi;
105 /* Move bnx2x_fastpath contents */
106 memcpy(to_fp, from_fp, sizeof(*to_fp));
109 /* Retain the tpa_info of the original `to' version as we don't want
110 * 2 FPs to contain the same tpa_info pointer.
112 to_fp->tpa_info = old_tpa_info;
114 /* move sp_objs contents as well, as their indices match fp ones */
115 memcpy(to_sp_objs, from_sp_objs, sizeof(*to_sp_objs));
117 /* move fp_stats contents as well, as their indices match fp ones */
118 memcpy(to_fp_stats, from_fp_stats, sizeof(*to_fp_stats));
120 /* Update txdata pointers in fp and move txdata content accordingly:
121 * Each fp consumes 'max_cos' txdata structures, so the index should be
122 * decremented by max_cos x delta.
125 old_max_eth_txqs = BNX2X_NUM_ETH_QUEUES(bp) * (bp)->max_cos;
126 new_max_eth_txqs = (BNX2X_NUM_ETH_QUEUES(bp) - from + to) *
128 if (from == FCOE_IDX(bp)) {
129 old_txdata_index = old_max_eth_txqs + FCOE_TXQ_IDX_OFFSET;
130 new_txdata_index = new_max_eth_txqs + FCOE_TXQ_IDX_OFFSET;
133 memcpy(&bp->bnx2x_txq[new_txdata_index],
134 &bp->bnx2x_txq[old_txdata_index],
135 sizeof(struct bnx2x_fp_txdata));
136 to_fp->txdata_ptr[0] = &bp->bnx2x_txq[new_txdata_index];
140 * bnx2x_fill_fw_str - Fill buffer with FW version string.
143 * @buf: character buffer to fill with the fw name
144 * @buf_len: length of the above buffer
147 void bnx2x_fill_fw_str(struct bnx2x *bp, char *buf, size_t buf_len)
150 u8 phy_fw_ver[PHY_FW_VER_LEN];
152 phy_fw_ver[0] = '\0';
153 bnx2x_get_ext_phy_fw_version(&bp->link_params,
154 phy_fw_ver, PHY_FW_VER_LEN);
155 strlcpy(buf, bp->fw_ver, buf_len);
156 snprintf(buf + strlen(bp->fw_ver), 32 - strlen(bp->fw_ver),
158 (bp->common.bc_ver & 0xff0000) >> 16,
159 (bp->common.bc_ver & 0xff00) >> 8,
160 (bp->common.bc_ver & 0xff),
161 ((phy_fw_ver[0] != '\0') ? " phy " : ""), phy_fw_ver);
163 bnx2x_vf_fill_fw_str(bp, buf, buf_len);
168 * bnx2x_shrink_eth_fp - guarantees fastpath structures stay intact
171 * @delta: number of eth queues which were not allocated
173 static void bnx2x_shrink_eth_fp(struct bnx2x *bp, int delta)
175 int i, cos, old_eth_num = BNX2X_NUM_ETH_QUEUES(bp);
177 /* Queue pointer cannot be re-set on an fp-basis, as moving pointer
178 * backward along the array could cause memory to be overridden
180 for (cos = 1; cos < bp->max_cos; cos++) {
181 for (i = 0; i < old_eth_num - delta; i++) {
182 struct bnx2x_fastpath *fp = &bp->fp[i];
183 int new_idx = cos * (old_eth_num - delta) + i;
185 memcpy(&bp->bnx2x_txq[new_idx], fp->txdata_ptr[cos],
186 sizeof(struct bnx2x_fp_txdata));
187 fp->txdata_ptr[cos] = &bp->bnx2x_txq[new_idx];
192 int bnx2x_load_count[2][3] = { {0} }; /* per-path: 0-common, 1-port0, 2-port1 */
194 /* free skb in the packet ring at pos idx
195 * return idx of last bd freed
197 static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata,
198 u16 idx, unsigned int *pkts_compl,
199 unsigned int *bytes_compl)
201 struct sw_tx_bd *tx_buf = &txdata->tx_buf_ring[idx];
202 struct eth_tx_start_bd *tx_start_bd;
203 struct eth_tx_bd *tx_data_bd;
204 struct sk_buff *skb = tx_buf->skb;
205 u16 bd_idx = TX_BD(tx_buf->first_bd), new_cons;
207 u16 split_bd_len = 0;
209 /* prefetch skb end pointer to speedup dev_kfree_skb() */
212 DP(NETIF_MSG_TX_DONE, "fp[%d]: pkt_idx %d buff @(%p)->skb %p\n",
213 txdata->txq_index, idx, tx_buf, skb);
215 tx_start_bd = &txdata->tx_desc_ring[bd_idx].start_bd;
217 nbd = le16_to_cpu(tx_start_bd->nbd) - 1;
218 #ifdef BNX2X_STOP_ON_ERROR
219 if ((nbd - 1) > (MAX_SKB_FRAGS + 2)) {
220 BNX2X_ERR("BAD nbd!\n");
224 new_cons = nbd + tx_buf->first_bd;
226 /* Get the next bd */
227 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
229 /* Skip a parse bd... */
231 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
233 if (tx_buf->flags & BNX2X_HAS_SECOND_PBD) {
234 /* Skip second parse bd... */
236 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
239 /* TSO headers+data bds share a common mapping. See bnx2x_tx_split() */
240 if (tx_buf->flags & BNX2X_TSO_SPLIT_BD) {
241 tx_data_bd = &txdata->tx_desc_ring[bd_idx].reg_bd;
242 split_bd_len = BD_UNMAP_LEN(tx_data_bd);
244 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
248 dma_unmap_single(&bp->pdev->dev, BD_UNMAP_ADDR(tx_start_bd),
249 BD_UNMAP_LEN(tx_start_bd) + split_bd_len,
255 tx_data_bd = &txdata->tx_desc_ring[bd_idx].reg_bd;
256 dma_unmap_page(&bp->pdev->dev, BD_UNMAP_ADDR(tx_data_bd),
257 BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE);
259 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
266 (*bytes_compl) += skb->len;
267 dev_kfree_skb_any(skb);
270 tx_buf->first_bd = 0;
276 int bnx2x_tx_int(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata)
278 struct netdev_queue *txq;
279 u16 hw_cons, sw_cons, bd_cons = txdata->tx_bd_cons;
280 unsigned int pkts_compl = 0, bytes_compl = 0;
282 #ifdef BNX2X_STOP_ON_ERROR
283 if (unlikely(bp->panic))
287 txq = netdev_get_tx_queue(bp->dev, txdata->txq_index);
288 hw_cons = le16_to_cpu(*txdata->tx_cons_sb);
289 sw_cons = txdata->tx_pkt_cons;
291 while (sw_cons != hw_cons) {
294 pkt_cons = TX_BD(sw_cons);
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);
300 bd_cons = bnx2x_free_tx_pkt(bp, txdata, pkt_cons,
301 &pkts_compl, &bytes_compl);
306 netdev_tx_completed_queue(txq, pkts_compl, bytes_compl);
308 txdata->tx_pkt_cons = sw_cons;
309 txdata->tx_bd_cons = bd_cons;
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
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.
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()):
328 * stops the queue->sees fresh tx_bd_cons->releases the queue->
329 * sends some packets consuming the whole queue again->
333 __netif_tx_lock(txq, smp_processor_id());
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);
340 __netif_tx_unlock(txq);
345 static inline void bnx2x_update_last_max_sge(struct bnx2x_fastpath *fp,
348 u16 last_max = fp->last_max_sge;
350 if (SUB_S16(idx, last_max) > 0)
351 fp->last_max_sge = idx;
354 static inline void bnx2x_update_sge_prod(struct bnx2x_fastpath *fp,
356 struct eth_end_agg_rx_cqe *cqe)
358 struct bnx2x *bp = fp->bp;
359 u16 last_max, last_elem, first_elem;
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])));
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]));
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]));
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;
383 /* If ring is not full */
384 if (last_elem + 1 != first_elem)
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]))
392 fp->sge_mask[i] = BIT_VEC64_ELEM_ONE_MASK;
393 delta += BIT_VEC64_ELEM_SZ;
397 fp->rx_sge_prod += delta;
398 /* clear page-end entries */
399 bnx2x_clear_sge_mask_next_elems(fp);
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);
407 /* Get Toeplitz hash value in the skb using the value from the
408 * CQE (calculated by HW).
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)
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;
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;
424 return le32_to_cpu(cqe->rss_hash_result);
426 *rxhash_type = PKT_HASH_TYPE_NONE;
430 static void bnx2x_tpa_start(struct bnx2x_fastpath *fp, u16 queue,
432 struct eth_fast_path_rx_cqe *cqe)
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];
439 struct bnx2x_agg_info *tpa_info = &fp->tpa_info[queue];
440 struct sw_rx_bd *first_buf = &tpa_info->first_buf;
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);
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);
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.
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;
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));
470 /* move partial skb from cons to pool (don't unmap yet) */
471 *first_buf = *cons_rx_buf;
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;
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",
494 /* Timestamp option length allowed for TPA aggregation:
496 * nop nop kind length echo val
498 #define TPA_TSTAMP_OPT_LEN 12
500 * bnx2x_set_gro_params - compute GRO values
503 * @parsing_flags: parsing flags from the START CQE
504 * @len_on_bd: total length of the first packet for the
506 * @pkt_len: length of all segments
508 * Approximate value of the MSS for this aggregation calculated using
509 * the first packet of it.
510 * Compute number of aggregated segments, and gso_type.
512 static void bnx2x_set_gro_params(struct sk_buff *skb, u16 parsing_flags,
513 u16 len_on_bd, unsigned int pkt_len,
514 u16 num_of_coalesced_segs)
516 /* TPA aggregation won't have either IP options or TCP options
517 * other than timestamp or IPv6 extension headers.
519 u16 hdrs_len = ETH_HLEN + sizeof(struct tcphdr);
521 if (GET_FLAG(parsing_flags, PARSING_FLAGS_OVER_ETHERNET_PROTOCOL) ==
522 PRS_FLAG_OVERETH_IPV6) {
523 hdrs_len += sizeof(struct ipv6hdr);
524 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
526 hdrs_len += sizeof(struct iphdr);
527 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
530 /* Check if there was a TCP timestamp, if there is it's will
531 * always be 12 bytes length: nop nop kind length echo val.
533 * Otherwise FW would close the aggregation.
535 if (parsing_flags & PARSING_FLAGS_TIME_STAMP_EXIST_FLAG)
536 hdrs_len += TPA_TSTAMP_OPT_LEN;
538 skb_shinfo(skb)->gso_size = len_on_bd - hdrs_len;
540 /* tcp_gro_complete() will copy NAPI_GRO_CB(skb)->count
541 * to skb_shinfo(skb)->gso_segs
543 NAPI_GRO_CB(skb)->count = num_of_coalesced_segs;
546 static int bnx2x_alloc_rx_sge(struct bnx2x *bp, struct bnx2x_fastpath *fp,
547 u16 index, gfp_t gfp_mask)
549 struct sw_rx_page *sw_buf = &fp->rx_page_ring[index];
550 struct eth_rx_sge *sge = &fp->rx_sge_ring[index];
551 struct bnx2x_alloc_pool *pool = &fp->page_pool;
554 if (!pool->page || (PAGE_SIZE - pool->offset) < SGE_PAGE_SIZE) {
556 /* put page reference used by the memory pool, since we
557 * won't be using this page as the mempool anymore.
560 put_page(pool->page);
562 pool->page = alloc_pages(gfp_mask, PAGES_PER_SGE_SHIFT);
563 if (unlikely(!pool->page)) {
564 BNX2X_ERR("Can't alloc sge\n");
571 mapping = dma_map_page(&bp->pdev->dev, pool->page,
572 pool->offset, SGE_PAGE_SIZE, DMA_FROM_DEVICE);
573 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
574 BNX2X_ERR("Can't map sge\n");
578 get_page(pool->page);
579 sw_buf->page = pool->page;
580 sw_buf->offset = pool->offset;
582 dma_unmap_addr_set(sw_buf, mapping, mapping);
584 sge->addr_hi = cpu_to_le32(U64_HI(mapping));
585 sge->addr_lo = cpu_to_le32(U64_LO(mapping));
587 pool->offset += SGE_PAGE_SIZE;
592 static int bnx2x_fill_frag_skb(struct bnx2x *bp, struct bnx2x_fastpath *fp,
593 struct bnx2x_agg_info *tpa_info,
596 struct eth_end_agg_rx_cqe *cqe,
599 struct sw_rx_page *rx_pg, old_rx_pg;
600 u32 i, frag_len, frag_size;
601 int err, j, frag_id = 0;
602 u16 len_on_bd = tpa_info->len_on_bd;
603 u16 full_page = 0, gro_size = 0;
605 frag_size = le16_to_cpu(cqe->pkt_len) - len_on_bd;
607 if (fp->mode == TPA_MODE_GRO) {
608 gro_size = tpa_info->gro_size;
609 full_page = tpa_info->full_page;
612 /* This is needed in order to enable forwarding support */
614 bnx2x_set_gro_params(skb, tpa_info->parsing_flags, len_on_bd,
615 le16_to_cpu(cqe->pkt_len),
616 le16_to_cpu(cqe->num_of_coalesced_segs));
618 #ifdef BNX2X_STOP_ON_ERROR
619 if (pages > min_t(u32, 8, MAX_SKB_FRAGS) * SGE_PAGES) {
620 BNX2X_ERR("SGL length is too long: %d. CQE index is %d\n",
622 BNX2X_ERR("cqe->pkt_len = %d\n", cqe->pkt_len);
628 /* Run through the SGL and compose the fragmented skb */
629 for (i = 0, j = 0; i < pages; i += PAGES_PER_SGE, j++) {
630 u16 sge_idx = RX_SGE(le16_to_cpu(cqe->sgl_or_raw_data.sgl[j]));
632 /* FW gives the indices of the SGE as if the ring is an array
633 (meaning that "next" element will consume 2 indices) */
634 if (fp->mode == TPA_MODE_GRO)
635 frag_len = min_t(u32, frag_size, (u32)full_page);
637 frag_len = min_t(u32, frag_size, (u32)SGE_PAGES);
639 rx_pg = &fp->rx_page_ring[sge_idx];
642 /* If we fail to allocate a substitute page, we simply stop
643 where we are and drop the whole packet */
644 err = bnx2x_alloc_rx_sge(bp, fp, sge_idx, GFP_ATOMIC);
646 bnx2x_fp_qstats(bp, fp)->rx_skb_alloc_failed++;
650 dma_unmap_page(&bp->pdev->dev,
651 dma_unmap_addr(&old_rx_pg, mapping),
652 SGE_PAGE_SIZE, DMA_FROM_DEVICE);
653 /* Add one frag and update the appropriate fields in the skb */
654 if (fp->mode == TPA_MODE_LRO)
655 skb_fill_page_desc(skb, j, old_rx_pg.page,
656 old_rx_pg.offset, frag_len);
660 for (rem = frag_len; rem > 0; rem -= gro_size) {
661 int len = rem > gro_size ? gro_size : rem;
662 skb_fill_page_desc(skb, frag_id++,
664 old_rx_pg.offset + offset,
667 get_page(old_rx_pg.page);
672 skb->data_len += frag_len;
673 skb->truesize += SGE_PAGES;
674 skb->len += frag_len;
676 frag_size -= frag_len;
682 static void bnx2x_frag_free(const struct bnx2x_fastpath *fp, void *data)
684 if (fp->rx_frag_size)
690 static void *bnx2x_frag_alloc(const struct bnx2x_fastpath *fp, gfp_t gfp_mask)
692 if (fp->rx_frag_size) {
693 /* GFP_KERNEL allocations are used only during initialization */
694 if (unlikely(gfpflags_allow_blocking(gfp_mask)))
695 return (void *)__get_free_page(gfp_mask);
697 return netdev_alloc_frag(fp->rx_frag_size);
700 return kmalloc(fp->rx_buf_size + NET_SKB_PAD, gfp_mask);
704 static void bnx2x_gro_ip_csum(struct bnx2x *bp, struct sk_buff *skb)
706 const struct iphdr *iph = ip_hdr(skb);
709 skb_set_transport_header(skb, sizeof(struct iphdr));
712 th->check = ~tcp_v4_check(skb->len - skb_transport_offset(skb),
713 iph->saddr, iph->daddr, 0);
716 static void bnx2x_gro_ipv6_csum(struct bnx2x *bp, struct sk_buff *skb)
718 struct ipv6hdr *iph = ipv6_hdr(skb);
721 skb_set_transport_header(skb, sizeof(struct ipv6hdr));
724 th->check = ~tcp_v6_check(skb->len - skb_transport_offset(skb),
725 &iph->saddr, &iph->daddr, 0);
728 static void bnx2x_gro_csum(struct bnx2x *bp, struct sk_buff *skb,
729 void (*gro_func)(struct bnx2x*, struct sk_buff*))
731 skb_set_network_header(skb, 0);
733 tcp_gro_complete(skb);
737 static void bnx2x_gro_receive(struct bnx2x *bp, struct bnx2x_fastpath *fp,
741 if (skb_shinfo(skb)->gso_size) {
742 switch (be16_to_cpu(skb->protocol)) {
744 bnx2x_gro_csum(bp, skb, bnx2x_gro_ip_csum);
747 bnx2x_gro_csum(bp, skb, bnx2x_gro_ipv6_csum);
750 BNX2X_ERR("Error: FW GRO supports only IPv4/IPv6, not 0x%04x\n",
751 be16_to_cpu(skb->protocol));
755 skb_record_rx_queue(skb, fp->rx_queue);
756 napi_gro_receive(&fp->napi, skb);
759 static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp,
760 struct bnx2x_agg_info *tpa_info,
762 struct eth_end_agg_rx_cqe *cqe,
765 struct sw_rx_bd *rx_buf = &tpa_info->first_buf;
766 u8 pad = tpa_info->placement_offset;
767 u16 len = tpa_info->len_on_bd;
768 struct sk_buff *skb = NULL;
769 u8 *new_data, *data = rx_buf->data;
770 u8 old_tpa_state = tpa_info->tpa_state;
772 tpa_info->tpa_state = BNX2X_TPA_STOP;
774 /* If we there was an error during the handling of the TPA_START -
775 * drop this aggregation.
777 if (old_tpa_state == BNX2X_TPA_ERROR)
780 /* Try to allocate the new data */
781 new_data = bnx2x_frag_alloc(fp, GFP_ATOMIC);
782 /* Unmap skb in the pool anyway, as we are going to change
783 pool entry status to BNX2X_TPA_STOP even if new skb allocation
785 dma_unmap_single(&bp->pdev->dev, dma_unmap_addr(rx_buf, mapping),
786 fp->rx_buf_size, DMA_FROM_DEVICE);
787 if (likely(new_data))
788 skb = build_skb(data, fp->rx_frag_size);
791 #ifdef BNX2X_STOP_ON_ERROR
792 if (pad + len > fp->rx_buf_size) {
793 BNX2X_ERR("skb_put is about to fail... pad %d len %d rx_buf_size %d\n",
794 pad, len, fp->rx_buf_size);
800 skb_reserve(skb, pad + NET_SKB_PAD);
802 skb_set_hash(skb, tpa_info->rxhash, tpa_info->rxhash_type);
804 skb->protocol = eth_type_trans(skb, bp->dev);
805 skb->ip_summed = CHECKSUM_UNNECESSARY;
807 if (!bnx2x_fill_frag_skb(bp, fp, tpa_info, pages,
808 skb, cqe, cqe_idx)) {
809 if (tpa_info->parsing_flags & PARSING_FLAGS_VLAN)
810 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tpa_info->vlan_tag);
811 bnx2x_gro_receive(bp, fp, skb);
813 DP(NETIF_MSG_RX_STATUS,
814 "Failed to allocate new pages - dropping packet!\n");
815 dev_kfree_skb_any(skb);
818 /* put new data in bin */
819 rx_buf->data = new_data;
824 bnx2x_frag_free(fp, new_data);
826 /* drop the packet and keep the buffer in the bin */
827 DP(NETIF_MSG_RX_STATUS,
828 "Failed to allocate or map a new skb - dropping packet!\n");
829 bnx2x_fp_stats(bp, fp)->eth_q_stats.rx_skb_alloc_failed++;
832 static int bnx2x_alloc_rx_data(struct bnx2x *bp, struct bnx2x_fastpath *fp,
833 u16 index, gfp_t gfp_mask)
836 struct sw_rx_bd *rx_buf = &fp->rx_buf_ring[index];
837 struct eth_rx_bd *rx_bd = &fp->rx_desc_ring[index];
840 data = bnx2x_frag_alloc(fp, gfp_mask);
841 if (unlikely(data == NULL))
844 mapping = dma_map_single(&bp->pdev->dev, data + NET_SKB_PAD,
847 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
848 bnx2x_frag_free(fp, data);
849 BNX2X_ERR("Can't map rx data\n");
854 dma_unmap_addr_set(rx_buf, mapping, mapping);
856 rx_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
857 rx_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
863 void bnx2x_csum_validate(struct sk_buff *skb, union eth_rx_cqe *cqe,
864 struct bnx2x_fastpath *fp,
865 struct bnx2x_eth_q_stats *qstats)
867 /* Do nothing if no L4 csum validation was done.
868 * We do not check whether IP csum was validated. For IPv4 we assume
869 * that if the card got as far as validating the L4 csum, it also
870 * validated the IP csum. IPv6 has no IP csum.
872 if (cqe->fast_path_cqe.status_flags &
873 ETH_FAST_PATH_RX_CQE_L4_XSUM_NO_VALIDATION_FLG)
876 /* If L4 validation was done, check if an error was found. */
878 if (cqe->fast_path_cqe.type_error_flags &
879 (ETH_FAST_PATH_RX_CQE_IP_BAD_XSUM_FLG |
880 ETH_FAST_PATH_RX_CQE_L4_BAD_XSUM_FLG))
881 qstats->hw_csum_err++;
883 skb->ip_summed = CHECKSUM_UNNECESSARY;
886 static int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget)
888 struct bnx2x *bp = fp->bp;
889 u16 bd_cons, bd_prod, bd_prod_fw, comp_ring_cons;
890 u16 sw_comp_cons, sw_comp_prod;
892 union eth_rx_cqe *cqe;
893 struct eth_fast_path_rx_cqe *cqe_fp;
895 #ifdef BNX2X_STOP_ON_ERROR
896 if (unlikely(bp->panic))
902 bd_cons = fp->rx_bd_cons;
903 bd_prod = fp->rx_bd_prod;
904 bd_prod_fw = bd_prod;
905 sw_comp_cons = fp->rx_comp_cons;
906 sw_comp_prod = fp->rx_comp_prod;
908 comp_ring_cons = RCQ_BD(sw_comp_cons);
909 cqe = &fp->rx_comp_ring[comp_ring_cons];
910 cqe_fp = &cqe->fast_path_cqe;
912 DP(NETIF_MSG_RX_STATUS,
913 "queue[%d]: sw_comp_cons %u\n", fp->index, sw_comp_cons);
915 while (BNX2X_IS_CQE_COMPLETED(cqe_fp)) {
916 struct sw_rx_bd *rx_buf = NULL;
919 enum eth_rx_cqe_type cqe_fp_type;
923 enum pkt_hash_types rxhash_type;
925 #ifdef BNX2X_STOP_ON_ERROR
926 if (unlikely(bp->panic))
930 bd_prod = RX_BD(bd_prod);
931 bd_cons = RX_BD(bd_cons);
933 /* A rmb() is required to ensure that the CQE is not read
934 * before it is written by the adapter DMA. PCI ordering
935 * rules will make sure the other fields are written before
936 * the marker at the end of struct eth_fast_path_rx_cqe
937 * but without rmb() a weakly ordered processor can process
938 * stale data. Without the barrier TPA state-machine might
939 * enter inconsistent state and kernel stack might be
940 * provided with incorrect packet description - these lead
941 * to various kernel crashed.
945 cqe_fp_flags = cqe_fp->type_error_flags;
946 cqe_fp_type = cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE;
948 DP(NETIF_MSG_RX_STATUS,
949 "CQE type %x err %x status %x queue %x vlan %x len %u\n",
950 CQE_TYPE(cqe_fp_flags),
951 cqe_fp_flags, cqe_fp->status_flags,
952 le32_to_cpu(cqe_fp->rss_hash_result),
953 le16_to_cpu(cqe_fp->vlan_tag),
954 le16_to_cpu(cqe_fp->pkt_len_or_gro_seg_len));
956 /* is this a slowpath msg? */
957 if (unlikely(CQE_TYPE_SLOW(cqe_fp_type))) {
958 bnx2x_sp_event(fp, cqe);
962 rx_buf = &fp->rx_buf_ring[bd_cons];
965 if (!CQE_TYPE_FAST(cqe_fp_type)) {
966 struct bnx2x_agg_info *tpa_info;
967 u16 frag_size, pages;
968 #ifdef BNX2X_STOP_ON_ERROR
970 if (fp->mode == TPA_MODE_DISABLED &&
971 (CQE_TYPE_START(cqe_fp_type) ||
972 CQE_TYPE_STOP(cqe_fp_type)))
973 BNX2X_ERR("START/STOP packet while TPA disabled, type %x\n",
974 CQE_TYPE(cqe_fp_type));
977 if (CQE_TYPE_START(cqe_fp_type)) {
978 u16 queue = cqe_fp->queue_index;
979 DP(NETIF_MSG_RX_STATUS,
980 "calling tpa_start on queue %d\n",
983 bnx2x_tpa_start(fp, queue,
989 queue = cqe->end_agg_cqe.queue_index;
990 tpa_info = &fp->tpa_info[queue];
991 DP(NETIF_MSG_RX_STATUS,
992 "calling tpa_stop on queue %d\n",
995 frag_size = le16_to_cpu(cqe->end_agg_cqe.pkt_len) -
998 if (fp->mode == TPA_MODE_GRO)
999 pages = (frag_size + tpa_info->full_page - 1) /
1000 tpa_info->full_page;
1002 pages = SGE_PAGE_ALIGN(frag_size) >>
1005 bnx2x_tpa_stop(bp, fp, tpa_info, pages,
1006 &cqe->end_agg_cqe, comp_ring_cons);
1007 #ifdef BNX2X_STOP_ON_ERROR
1012 bnx2x_update_sge_prod(fp, pages, &cqe->end_agg_cqe);
1016 len = le16_to_cpu(cqe_fp->pkt_len_or_gro_seg_len);
1017 pad = cqe_fp->placement_offset;
1018 dma_sync_single_for_cpu(&bp->pdev->dev,
1019 dma_unmap_addr(rx_buf, mapping),
1020 pad + RX_COPY_THRESH,
1023 prefetch(data + pad); /* speedup eth_type_trans() */
1024 /* is this an error packet? */
1025 if (unlikely(cqe_fp_flags & ETH_RX_ERROR_FALGS)) {
1026 DP(NETIF_MSG_RX_ERR | NETIF_MSG_RX_STATUS,
1027 "ERROR flags %x rx packet %u\n",
1028 cqe_fp_flags, sw_comp_cons);
1029 bnx2x_fp_qstats(bp, fp)->rx_err_discard_pkt++;
1033 /* Since we don't have a jumbo ring
1034 * copy small packets if mtu > 1500
1036 if ((bp->dev->mtu > ETH_MAX_PACKET_SIZE) &&
1037 (len <= RX_COPY_THRESH)) {
1038 skb = napi_alloc_skb(&fp->napi, len);
1040 DP(NETIF_MSG_RX_ERR | NETIF_MSG_RX_STATUS,
1041 "ERROR packet dropped because of alloc failure\n");
1042 bnx2x_fp_qstats(bp, fp)->rx_skb_alloc_failed++;
1045 memcpy(skb->data, data + pad, len);
1046 bnx2x_reuse_rx_data(fp, bd_cons, bd_prod);
1048 if (likely(bnx2x_alloc_rx_data(bp, fp, bd_prod,
1049 GFP_ATOMIC) == 0)) {
1050 dma_unmap_single(&bp->pdev->dev,
1051 dma_unmap_addr(rx_buf, mapping),
1054 skb = build_skb(data, fp->rx_frag_size);
1055 if (unlikely(!skb)) {
1056 bnx2x_frag_free(fp, data);
1057 bnx2x_fp_qstats(bp, fp)->
1058 rx_skb_alloc_failed++;
1061 skb_reserve(skb, pad);
1063 DP(NETIF_MSG_RX_ERR | NETIF_MSG_RX_STATUS,
1064 "ERROR packet dropped because of alloc failure\n");
1065 bnx2x_fp_qstats(bp, fp)->rx_skb_alloc_failed++;
1067 bnx2x_reuse_rx_data(fp, bd_cons, bd_prod);
1073 skb->protocol = eth_type_trans(skb, bp->dev);
1075 /* Set Toeplitz hash for a none-LRO skb */
1076 rxhash = bnx2x_get_rxhash(bp, cqe_fp, &rxhash_type);
1077 skb_set_hash(skb, rxhash, rxhash_type);
1079 skb_checksum_none_assert(skb);
1081 if (bp->dev->features & NETIF_F_RXCSUM)
1082 bnx2x_csum_validate(skb, cqe, fp,
1083 bnx2x_fp_qstats(bp, fp));
1085 skb_record_rx_queue(skb, fp->rx_queue);
1087 /* Check if this packet was timestamped */
1088 if (unlikely(cqe->fast_path_cqe.type_error_flags &
1089 (1 << ETH_FAST_PATH_RX_CQE_PTP_PKT_SHIFT)))
1090 bnx2x_set_rx_ts(bp, skb);
1092 if (le16_to_cpu(cqe_fp->pars_flags.flags) &
1094 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
1095 le16_to_cpu(cqe_fp->vlan_tag));
1097 skb_mark_napi_id(skb, &fp->napi);
1099 if (bnx2x_fp_ll_polling(fp))
1100 netif_receive_skb(skb);
1102 napi_gro_receive(&fp->napi, skb);
1104 rx_buf->data = NULL;
1106 bd_cons = NEXT_RX_IDX(bd_cons);
1107 bd_prod = NEXT_RX_IDX(bd_prod);
1108 bd_prod_fw = NEXT_RX_IDX(bd_prod_fw);
1111 sw_comp_prod = NEXT_RCQ_IDX(sw_comp_prod);
1112 sw_comp_cons = NEXT_RCQ_IDX(sw_comp_cons);
1114 /* mark CQE as free */
1115 BNX2X_SEED_CQE(cqe_fp);
1117 if (rx_pkt == budget)
1120 comp_ring_cons = RCQ_BD(sw_comp_cons);
1121 cqe = &fp->rx_comp_ring[comp_ring_cons];
1122 cqe_fp = &cqe->fast_path_cqe;
1125 fp->rx_bd_cons = bd_cons;
1126 fp->rx_bd_prod = bd_prod_fw;
1127 fp->rx_comp_cons = sw_comp_cons;
1128 fp->rx_comp_prod = sw_comp_prod;
1130 /* Update producers */
1131 bnx2x_update_rx_prod(bp, fp, bd_prod_fw, sw_comp_prod,
1134 fp->rx_pkt += rx_pkt;
1140 static irqreturn_t bnx2x_msix_fp_int(int irq, void *fp_cookie)
1142 struct bnx2x_fastpath *fp = fp_cookie;
1143 struct bnx2x *bp = fp->bp;
1147 "got an MSI-X interrupt on IDX:SB [fp %d fw_sd %d igusb %d]\n",
1148 fp->index, fp->fw_sb_id, fp->igu_sb_id);
1150 bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID, 0, IGU_INT_DISABLE, 0);
1152 #ifdef BNX2X_STOP_ON_ERROR
1153 if (unlikely(bp->panic))
1157 /* Handle Rx and Tx according to MSI-X vector */
1158 for_each_cos_in_tx_queue(fp, cos)
1159 prefetch(fp->txdata_ptr[cos]->tx_cons_sb);
1161 prefetch(&fp->sb_running_index[SM_RX_ID]);
1162 napi_schedule_irqoff(&bnx2x_fp(bp, fp->index, napi));
1167 /* HW Lock for shared dual port PHYs */
1168 void bnx2x_acquire_phy_lock(struct bnx2x *bp)
1170 mutex_lock(&bp->port.phy_mutex);
1172 bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_MDIO);
1175 void bnx2x_release_phy_lock(struct bnx2x *bp)
1177 bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_MDIO);
1179 mutex_unlock(&bp->port.phy_mutex);
1182 /* calculates MF speed according to current linespeed and MF configuration */
1183 u16 bnx2x_get_mf_speed(struct bnx2x *bp)
1185 u16 line_speed = bp->link_vars.line_speed;
1187 u16 maxCfg = bnx2x_extract_max_cfg(bp,
1188 bp->mf_config[BP_VN(bp)]);
1190 /* Calculate the current MAX line speed limit for the MF
1193 if (IS_MF_PERCENT_BW(bp))
1194 line_speed = (line_speed * maxCfg) / 100;
1195 else { /* SD mode */
1196 u16 vn_max_rate = maxCfg * 100;
1198 if (vn_max_rate < line_speed)
1199 line_speed = vn_max_rate;
1207 * bnx2x_fill_report_data - fill link report data to report
1209 * @bp: driver handle
1210 * @data: link state to update
1212 * It uses a none-atomic bit operations because is called under the mutex.
1214 static void bnx2x_fill_report_data(struct bnx2x *bp,
1215 struct bnx2x_link_report_data *data)
1217 memset(data, 0, sizeof(*data));
1220 /* Fill the report data: effective line speed */
1221 data->line_speed = bnx2x_get_mf_speed(bp);
1224 if (!bp->link_vars.link_up || (bp->flags & MF_FUNC_DIS))
1225 __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1226 &data->link_report_flags);
1228 if (!BNX2X_NUM_ETH_QUEUES(bp))
1229 __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1230 &data->link_report_flags);
1233 if (bp->link_vars.duplex == DUPLEX_FULL)
1234 __set_bit(BNX2X_LINK_REPORT_FD,
1235 &data->link_report_flags);
1237 /* Rx Flow Control is ON */
1238 if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_RX)
1239 __set_bit(BNX2X_LINK_REPORT_RX_FC_ON,
1240 &data->link_report_flags);
1242 /* Tx Flow Control is ON */
1243 if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_TX)
1244 __set_bit(BNX2X_LINK_REPORT_TX_FC_ON,
1245 &data->link_report_flags);
1247 *data = bp->vf_link_vars;
1252 * bnx2x_link_report - report link status to OS.
1254 * @bp: driver handle
1256 * Calls the __bnx2x_link_report() under the same locking scheme
1257 * as a link/PHY state managing code to ensure a consistent link
1261 void bnx2x_link_report(struct bnx2x *bp)
1263 bnx2x_acquire_phy_lock(bp);
1264 __bnx2x_link_report(bp);
1265 bnx2x_release_phy_lock(bp);
1269 * __bnx2x_link_report - report link status to OS.
1271 * @bp: driver handle
1273 * None atomic implementation.
1274 * Should be called under the phy_lock.
1276 void __bnx2x_link_report(struct bnx2x *bp)
1278 struct bnx2x_link_report_data cur_data;
1281 if (IS_PF(bp) && !CHIP_IS_E1(bp))
1282 bnx2x_read_mf_cfg(bp);
1284 /* Read the current link report info */
1285 bnx2x_fill_report_data(bp, &cur_data);
1287 /* Don't report link down or exactly the same link status twice */
1288 if (!memcmp(&cur_data, &bp->last_reported_link, sizeof(cur_data)) ||
1289 (test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1290 &bp->last_reported_link.link_report_flags) &&
1291 test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1292 &cur_data.link_report_flags)))
1297 /* We are going to report a new link parameters now -
1298 * remember the current data for the next time.
1300 memcpy(&bp->last_reported_link, &cur_data, sizeof(cur_data));
1302 /* propagate status to VFs */
1304 bnx2x_iov_link_update(bp);
1306 if (test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1307 &cur_data.link_report_flags)) {
1308 netif_carrier_off(bp->dev);
1309 netdev_err(bp->dev, "NIC Link is Down\n");
1315 netif_carrier_on(bp->dev);
1317 if (test_and_clear_bit(BNX2X_LINK_REPORT_FD,
1318 &cur_data.link_report_flags))
1323 /* Handle the FC at the end so that only these flags would be
1324 * possibly set. This way we may easily check if there is no FC
1327 if (cur_data.link_report_flags) {
1328 if (test_bit(BNX2X_LINK_REPORT_RX_FC_ON,
1329 &cur_data.link_report_flags)) {
1330 if (test_bit(BNX2X_LINK_REPORT_TX_FC_ON,
1331 &cur_data.link_report_flags))
1332 flow = "ON - receive & transmit";
1334 flow = "ON - receive";
1336 flow = "ON - transmit";
1341 netdev_info(bp->dev, "NIC Link is Up, %d Mbps %s duplex, Flow control: %s\n",
1342 cur_data.line_speed, duplex, flow);
1346 static void bnx2x_set_next_page_sgl(struct bnx2x_fastpath *fp)
1350 for (i = 1; i <= NUM_RX_SGE_PAGES; i++) {
1351 struct eth_rx_sge *sge;
1353 sge = &fp->rx_sge_ring[RX_SGE_CNT * i - 2];
1355 cpu_to_le32(U64_HI(fp->rx_sge_mapping +
1356 BCM_PAGE_SIZE*(i % NUM_RX_SGE_PAGES)));
1359 cpu_to_le32(U64_LO(fp->rx_sge_mapping +
1360 BCM_PAGE_SIZE*(i % NUM_RX_SGE_PAGES)));
1364 static void bnx2x_free_tpa_pool(struct bnx2x *bp,
1365 struct bnx2x_fastpath *fp, int last)
1369 for (i = 0; i < last; i++) {
1370 struct bnx2x_agg_info *tpa_info = &fp->tpa_info[i];
1371 struct sw_rx_bd *first_buf = &tpa_info->first_buf;
1372 u8 *data = first_buf->data;
1375 DP(NETIF_MSG_IFDOWN, "tpa bin %d empty on free\n", i);
1378 if (tpa_info->tpa_state == BNX2X_TPA_START)
1379 dma_unmap_single(&bp->pdev->dev,
1380 dma_unmap_addr(first_buf, mapping),
1381 fp->rx_buf_size, DMA_FROM_DEVICE);
1382 bnx2x_frag_free(fp, data);
1383 first_buf->data = NULL;
1387 void bnx2x_init_rx_rings_cnic(struct bnx2x *bp)
1391 for_each_rx_queue_cnic(bp, j) {
1392 struct bnx2x_fastpath *fp = &bp->fp[j];
1396 /* Activate BD ring */
1398 * this will generate an interrupt (to the TSTORM)
1399 * must only be done after chip is initialized
1401 bnx2x_update_rx_prod(bp, fp, fp->rx_bd_prod, fp->rx_comp_prod,
1406 void bnx2x_init_rx_rings(struct bnx2x *bp)
1408 int func = BP_FUNC(bp);
1412 /* Allocate TPA resources */
1413 for_each_eth_queue(bp, j) {
1414 struct bnx2x_fastpath *fp = &bp->fp[j];
1417 "mtu %d rx_buf_size %d\n", bp->dev->mtu, fp->rx_buf_size);
1419 if (fp->mode != TPA_MODE_DISABLED) {
1420 /* Fill the per-aggregation pool */
1421 for (i = 0; i < MAX_AGG_QS(bp); i++) {
1422 struct bnx2x_agg_info *tpa_info =
1424 struct sw_rx_bd *first_buf =
1425 &tpa_info->first_buf;
1428 bnx2x_frag_alloc(fp, GFP_KERNEL);
1429 if (!first_buf->data) {
1430 BNX2X_ERR("Failed to allocate TPA skb pool for queue[%d] - disabling TPA on this queue!\n",
1432 bnx2x_free_tpa_pool(bp, fp, i);
1433 fp->mode = TPA_MODE_DISABLED;
1436 dma_unmap_addr_set(first_buf, mapping, 0);
1437 tpa_info->tpa_state = BNX2X_TPA_STOP;
1440 /* "next page" elements initialization */
1441 bnx2x_set_next_page_sgl(fp);
1443 /* set SGEs bit mask */
1444 bnx2x_init_sge_ring_bit_mask(fp);
1446 /* Allocate SGEs and initialize the ring elements */
1447 for (i = 0, ring_prod = 0;
1448 i < MAX_RX_SGE_CNT*NUM_RX_SGE_PAGES; i++) {
1450 if (bnx2x_alloc_rx_sge(bp, fp, ring_prod,
1452 BNX2X_ERR("was only able to allocate %d rx sges\n",
1454 BNX2X_ERR("disabling TPA for queue[%d]\n",
1456 /* Cleanup already allocated elements */
1457 bnx2x_free_rx_sge_range(bp, fp,
1459 bnx2x_free_tpa_pool(bp, fp,
1461 fp->mode = TPA_MODE_DISABLED;
1465 ring_prod = NEXT_SGE_IDX(ring_prod);
1468 fp->rx_sge_prod = ring_prod;
1472 for_each_eth_queue(bp, j) {
1473 struct bnx2x_fastpath *fp = &bp->fp[j];
1477 /* Activate BD ring */
1479 * this will generate an interrupt (to the TSTORM)
1480 * must only be done after chip is initialized
1482 bnx2x_update_rx_prod(bp, fp, fp->rx_bd_prod, fp->rx_comp_prod,
1488 if (CHIP_IS_E1(bp)) {
1489 REG_WR(bp, BAR_USTRORM_INTMEM +
1490 USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func),
1491 U64_LO(fp->rx_comp_mapping));
1492 REG_WR(bp, BAR_USTRORM_INTMEM +
1493 USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func) + 4,
1494 U64_HI(fp->rx_comp_mapping));
1499 static void bnx2x_free_tx_skbs_queue(struct bnx2x_fastpath *fp)
1502 struct bnx2x *bp = fp->bp;
1504 for_each_cos_in_tx_queue(fp, cos) {
1505 struct bnx2x_fp_txdata *txdata = fp->txdata_ptr[cos];
1506 unsigned pkts_compl = 0, bytes_compl = 0;
1508 u16 sw_prod = txdata->tx_pkt_prod;
1509 u16 sw_cons = txdata->tx_pkt_cons;
1511 while (sw_cons != sw_prod) {
1512 bnx2x_free_tx_pkt(bp, txdata, TX_BD(sw_cons),
1513 &pkts_compl, &bytes_compl);
1517 netdev_tx_reset_queue(
1518 netdev_get_tx_queue(bp->dev,
1519 txdata->txq_index));
1523 static void bnx2x_free_tx_skbs_cnic(struct bnx2x *bp)
1527 for_each_tx_queue_cnic(bp, i) {
1528 bnx2x_free_tx_skbs_queue(&bp->fp[i]);
1532 static void bnx2x_free_tx_skbs(struct bnx2x *bp)
1536 for_each_eth_queue(bp, i) {
1537 bnx2x_free_tx_skbs_queue(&bp->fp[i]);
1541 static void bnx2x_free_rx_bds(struct bnx2x_fastpath *fp)
1543 struct bnx2x *bp = fp->bp;
1546 /* ring wasn't allocated */
1547 if (fp->rx_buf_ring == NULL)
1550 for (i = 0; i < NUM_RX_BD; i++) {
1551 struct sw_rx_bd *rx_buf = &fp->rx_buf_ring[i];
1552 u8 *data = rx_buf->data;
1556 dma_unmap_single(&bp->pdev->dev,
1557 dma_unmap_addr(rx_buf, mapping),
1558 fp->rx_buf_size, DMA_FROM_DEVICE);
1560 rx_buf->data = NULL;
1561 bnx2x_frag_free(fp, data);
1565 static void bnx2x_free_rx_skbs_cnic(struct bnx2x *bp)
1569 for_each_rx_queue_cnic(bp, j) {
1570 bnx2x_free_rx_bds(&bp->fp[j]);
1574 static void bnx2x_free_rx_skbs(struct bnx2x *bp)
1578 for_each_eth_queue(bp, j) {
1579 struct bnx2x_fastpath *fp = &bp->fp[j];
1581 bnx2x_free_rx_bds(fp);
1583 if (fp->mode != TPA_MODE_DISABLED)
1584 bnx2x_free_tpa_pool(bp, fp, MAX_AGG_QS(bp));
1588 static void bnx2x_free_skbs_cnic(struct bnx2x *bp)
1590 bnx2x_free_tx_skbs_cnic(bp);
1591 bnx2x_free_rx_skbs_cnic(bp);
1594 void bnx2x_free_skbs(struct bnx2x *bp)
1596 bnx2x_free_tx_skbs(bp);
1597 bnx2x_free_rx_skbs(bp);
1600 void bnx2x_update_max_mf_config(struct bnx2x *bp, u32 value)
1602 /* load old values */
1603 u32 mf_cfg = bp->mf_config[BP_VN(bp)];
1605 if (value != bnx2x_extract_max_cfg(bp, mf_cfg)) {
1606 /* leave all but MAX value */
1607 mf_cfg &= ~FUNC_MF_CFG_MAX_BW_MASK;
1609 /* set new MAX value */
1610 mf_cfg |= (value << FUNC_MF_CFG_MAX_BW_SHIFT)
1611 & FUNC_MF_CFG_MAX_BW_MASK;
1613 bnx2x_fw_command(bp, DRV_MSG_CODE_SET_MF_BW, mf_cfg);
1618 * bnx2x_free_msix_irqs - free previously requested MSI-X IRQ vectors
1620 * @bp: driver handle
1621 * @nvecs: number of vectors to be released
1623 static void bnx2x_free_msix_irqs(struct bnx2x *bp, int nvecs)
1627 if (nvecs == offset)
1630 /* VFs don't have a default SB */
1632 free_irq(bp->msix_table[offset].vector, bp->dev);
1633 DP(NETIF_MSG_IFDOWN, "released sp irq (%d)\n",
1634 bp->msix_table[offset].vector);
1638 if (CNIC_SUPPORT(bp)) {
1639 if (nvecs == offset)
1644 for_each_eth_queue(bp, i) {
1645 if (nvecs == offset)
1647 DP(NETIF_MSG_IFDOWN, "about to release fp #%d->%d irq\n",
1648 i, bp->msix_table[offset].vector);
1650 free_irq(bp->msix_table[offset++].vector, &bp->fp[i]);
1654 void bnx2x_free_irq(struct bnx2x *bp)
1656 if (bp->flags & USING_MSIX_FLAG &&
1657 !(bp->flags & USING_SINGLE_MSIX_FLAG)) {
1658 int nvecs = BNX2X_NUM_ETH_QUEUES(bp) + CNIC_SUPPORT(bp);
1660 /* vfs don't have a default status block */
1664 bnx2x_free_msix_irqs(bp, nvecs);
1666 free_irq(bp->dev->irq, bp->dev);
1670 int bnx2x_enable_msix(struct bnx2x *bp)
1672 int msix_vec = 0, i, rc;
1674 /* VFs don't have a default status block */
1676 bp->msix_table[msix_vec].entry = msix_vec;
1677 BNX2X_DEV_INFO("msix_table[0].entry = %d (slowpath)\n",
1678 bp->msix_table[0].entry);
1682 /* Cnic requires an msix vector for itself */
1683 if (CNIC_SUPPORT(bp)) {
1684 bp->msix_table[msix_vec].entry = msix_vec;
1685 BNX2X_DEV_INFO("msix_table[%d].entry = %d (CNIC)\n",
1686 msix_vec, bp->msix_table[msix_vec].entry);
1690 /* We need separate vectors for ETH queues only (not FCoE) */
1691 for_each_eth_queue(bp, i) {
1692 bp->msix_table[msix_vec].entry = msix_vec;
1693 BNX2X_DEV_INFO("msix_table[%d].entry = %d (fastpath #%u)\n",
1694 msix_vec, msix_vec, i);
1698 DP(BNX2X_MSG_SP, "about to request enable msix with %d vectors\n",
1701 rc = pci_enable_msix_range(bp->pdev, &bp->msix_table[0],
1702 BNX2X_MIN_MSIX_VEC_CNT(bp), msix_vec);
1704 * reconfigure number of tx/rx queues according to available
1707 if (rc == -ENOSPC) {
1708 /* Get by with single vector */
1709 rc = pci_enable_msix_range(bp->pdev, &bp->msix_table[0], 1, 1);
1711 BNX2X_DEV_INFO("Single MSI-X is not attainable rc %d\n",
1716 BNX2X_DEV_INFO("Using single MSI-X vector\n");
1717 bp->flags |= USING_SINGLE_MSIX_FLAG;
1719 BNX2X_DEV_INFO("set number of queues to 1\n");
1720 bp->num_ethernet_queues = 1;
1721 bp->num_queues = bp->num_ethernet_queues + bp->num_cnic_queues;
1722 } else if (rc < 0) {
1723 BNX2X_DEV_INFO("MSI-X is not attainable rc %d\n", rc);
1725 } else if (rc < msix_vec) {
1726 /* how less vectors we will have? */
1727 int diff = msix_vec - rc;
1729 BNX2X_DEV_INFO("Trying to use less MSI-X vectors: %d\n", rc);
1732 * decrease number of queues by number of unallocated entries
1734 bp->num_ethernet_queues -= diff;
1735 bp->num_queues = bp->num_ethernet_queues + bp->num_cnic_queues;
1737 BNX2X_DEV_INFO("New queue configuration set: %d\n",
1741 bp->flags |= USING_MSIX_FLAG;
1746 /* fall to INTx if not enough memory */
1748 bp->flags |= DISABLE_MSI_FLAG;
1753 static int bnx2x_req_msix_irqs(struct bnx2x *bp)
1755 int i, rc, offset = 0;
1757 /* no default status block for vf */
1759 rc = request_irq(bp->msix_table[offset++].vector,
1760 bnx2x_msix_sp_int, 0,
1761 bp->dev->name, bp->dev);
1763 BNX2X_ERR("request sp irq failed\n");
1768 if (CNIC_SUPPORT(bp))
1771 for_each_eth_queue(bp, i) {
1772 struct bnx2x_fastpath *fp = &bp->fp[i];
1773 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
1776 rc = request_irq(bp->msix_table[offset].vector,
1777 bnx2x_msix_fp_int, 0, fp->name, fp);
1779 BNX2X_ERR("request fp #%d irq (%d) failed rc %d\n", i,
1780 bp->msix_table[offset].vector, rc);
1781 bnx2x_free_msix_irqs(bp, offset);
1788 i = BNX2X_NUM_ETH_QUEUES(bp);
1790 offset = 1 + CNIC_SUPPORT(bp);
1791 netdev_info(bp->dev,
1792 "using MSI-X IRQs: sp %d fp[%d] %d ... fp[%d] %d\n",
1793 bp->msix_table[0].vector,
1794 0, bp->msix_table[offset].vector,
1795 i - 1, bp->msix_table[offset + i - 1].vector);
1797 offset = CNIC_SUPPORT(bp);
1798 netdev_info(bp->dev,
1799 "using MSI-X IRQs: fp[%d] %d ... fp[%d] %d\n",
1800 0, bp->msix_table[offset].vector,
1801 i - 1, bp->msix_table[offset + i - 1].vector);
1806 int bnx2x_enable_msi(struct bnx2x *bp)
1810 rc = pci_enable_msi(bp->pdev);
1812 BNX2X_DEV_INFO("MSI is not attainable\n");
1815 bp->flags |= USING_MSI_FLAG;
1820 static int bnx2x_req_irq(struct bnx2x *bp)
1822 unsigned long flags;
1825 if (bp->flags & (USING_MSI_FLAG | USING_MSIX_FLAG))
1828 flags = IRQF_SHARED;
1830 if (bp->flags & USING_MSIX_FLAG)
1831 irq = bp->msix_table[0].vector;
1833 irq = bp->pdev->irq;
1835 return request_irq(irq, bnx2x_interrupt, flags, bp->dev->name, bp->dev);
1838 static int bnx2x_setup_irqs(struct bnx2x *bp)
1841 if (bp->flags & USING_MSIX_FLAG &&
1842 !(bp->flags & USING_SINGLE_MSIX_FLAG)) {
1843 rc = bnx2x_req_msix_irqs(bp);
1847 rc = bnx2x_req_irq(bp);
1849 BNX2X_ERR("IRQ request failed rc %d, aborting\n", rc);
1852 if (bp->flags & USING_MSI_FLAG) {
1853 bp->dev->irq = bp->pdev->irq;
1854 netdev_info(bp->dev, "using MSI IRQ %d\n",
1857 if (bp->flags & USING_MSIX_FLAG) {
1858 bp->dev->irq = bp->msix_table[0].vector;
1859 netdev_info(bp->dev, "using MSIX IRQ %d\n",
1867 static void bnx2x_napi_enable_cnic(struct bnx2x *bp)
1871 for_each_rx_queue_cnic(bp, i) {
1872 bnx2x_fp_busy_poll_init(&bp->fp[i]);
1873 napi_enable(&bnx2x_fp(bp, i, napi));
1877 static void bnx2x_napi_enable(struct bnx2x *bp)
1881 for_each_eth_queue(bp, i) {
1882 bnx2x_fp_busy_poll_init(&bp->fp[i]);
1883 napi_enable(&bnx2x_fp(bp, i, napi));
1887 static void bnx2x_napi_disable_cnic(struct bnx2x *bp)
1891 for_each_rx_queue_cnic(bp, i) {
1892 napi_disable(&bnx2x_fp(bp, i, napi));
1893 while (!bnx2x_fp_ll_disable(&bp->fp[i]))
1894 usleep_range(1000, 2000);
1898 static void bnx2x_napi_disable(struct bnx2x *bp)
1902 for_each_eth_queue(bp, i) {
1903 napi_disable(&bnx2x_fp(bp, i, napi));
1904 while (!bnx2x_fp_ll_disable(&bp->fp[i]))
1905 usleep_range(1000, 2000);
1909 void bnx2x_netif_start(struct bnx2x *bp)
1911 if (netif_running(bp->dev)) {
1912 bnx2x_napi_enable(bp);
1913 if (CNIC_LOADED(bp))
1914 bnx2x_napi_enable_cnic(bp);
1915 bnx2x_int_enable(bp);
1916 if (bp->state == BNX2X_STATE_OPEN)
1917 netif_tx_wake_all_queues(bp->dev);
1921 void bnx2x_netif_stop(struct bnx2x *bp, int disable_hw)
1923 bnx2x_int_disable_sync(bp, disable_hw);
1924 bnx2x_napi_disable(bp);
1925 if (CNIC_LOADED(bp))
1926 bnx2x_napi_disable_cnic(bp);
1929 u16 bnx2x_select_queue(struct net_device *dev, struct sk_buff *skb,
1930 void *accel_priv, select_queue_fallback_t fallback)
1932 struct bnx2x *bp = netdev_priv(dev);
1934 if (CNIC_LOADED(bp) && !NO_FCOE(bp)) {
1935 struct ethhdr *hdr = (struct ethhdr *)skb->data;
1936 u16 ether_type = ntohs(hdr->h_proto);
1938 /* Skip VLAN tag if present */
1939 if (ether_type == ETH_P_8021Q) {
1940 struct vlan_ethhdr *vhdr =
1941 (struct vlan_ethhdr *)skb->data;
1943 ether_type = ntohs(vhdr->h_vlan_encapsulated_proto);
1946 /* If ethertype is FCoE or FIP - use FCoE ring */
1947 if ((ether_type == ETH_P_FCOE) || (ether_type == ETH_P_FIP))
1948 return bnx2x_fcoe_tx(bp, txq_index);
1951 /* select a non-FCoE queue */
1952 return fallback(dev, skb) % BNX2X_NUM_ETH_QUEUES(bp);
1955 void bnx2x_set_num_queues(struct bnx2x *bp)
1958 bp->num_ethernet_queues = bnx2x_calc_num_queues(bp);
1960 /* override in STORAGE SD modes */
1961 if (IS_MF_STORAGE_ONLY(bp))
1962 bp->num_ethernet_queues = 1;
1964 /* Add special queues */
1965 bp->num_cnic_queues = CNIC_SUPPORT(bp); /* For FCOE */
1966 bp->num_queues = bp->num_ethernet_queues + bp->num_cnic_queues;
1968 BNX2X_DEV_INFO("set number of queues to %d\n", bp->num_queues);
1972 * bnx2x_set_real_num_queues - configure netdev->real_num_[tx,rx]_queues
1974 * @bp: Driver handle
1976 * We currently support for at most 16 Tx queues for each CoS thus we will
1977 * allocate a multiple of 16 for ETH L2 rings according to the value of the
1980 * If there is an FCoE L2 queue the appropriate Tx queue will have the next
1981 * index after all ETH L2 indices.
1983 * If the actual number of Tx queues (for each CoS) is less than 16 then there
1984 * will be the holes at the end of each group of 16 ETh L2 indices (0..15,
1985 * 16..31,...) with indices that are not coupled with any real Tx queue.
1987 * The proper configuration of skb->queue_mapping is handled by
1988 * bnx2x_select_queue() and __skb_tx_hash().
1990 * bnx2x_setup_tc() takes care of the proper TC mappings so that __skb_tx_hash()
1991 * will return a proper Tx index if TC is enabled (netdev->num_tc > 0).
1993 static int bnx2x_set_real_num_queues(struct bnx2x *bp, int include_cnic)
1997 tx = BNX2X_NUM_ETH_QUEUES(bp) * bp->max_cos;
1998 rx = BNX2X_NUM_ETH_QUEUES(bp);
2000 /* account for fcoe queue */
2001 if (include_cnic && !NO_FCOE(bp)) {
2006 rc = netif_set_real_num_tx_queues(bp->dev, tx);
2008 BNX2X_ERR("Failed to set real number of Tx queues: %d\n", rc);
2011 rc = netif_set_real_num_rx_queues(bp->dev, rx);
2013 BNX2X_ERR("Failed to set real number of Rx queues: %d\n", rc);
2017 DP(NETIF_MSG_IFUP, "Setting real num queues to (tx, rx) (%d, %d)\n",
2023 static void bnx2x_set_rx_buf_size(struct bnx2x *bp)
2027 for_each_queue(bp, i) {
2028 struct bnx2x_fastpath *fp = &bp->fp[i];
2031 /* Always use a mini-jumbo MTU for the FCoE L2 ring */
2034 * Although there are no IP frames expected to arrive to
2035 * this ring we still want to add an
2036 * IP_HEADER_ALIGNMENT_PADDING to prevent a buffer
2039 mtu = BNX2X_FCOE_MINI_JUMBO_MTU;
2042 fp->rx_buf_size = BNX2X_FW_RX_ALIGN_START +
2043 IP_HEADER_ALIGNMENT_PADDING +
2046 BNX2X_FW_RX_ALIGN_END;
2047 /* Note : rx_buf_size doesn't take into account NET_SKB_PAD */
2048 if (fp->rx_buf_size + NET_SKB_PAD <= PAGE_SIZE)
2049 fp->rx_frag_size = fp->rx_buf_size + NET_SKB_PAD;
2051 fp->rx_frag_size = 0;
2055 static int bnx2x_init_rss(struct bnx2x *bp)
2058 u8 num_eth_queues = BNX2X_NUM_ETH_QUEUES(bp);
2060 /* Prepare the initial contents for the indirection table if RSS is
2063 for (i = 0; i < sizeof(bp->rss_conf_obj.ind_table); i++)
2064 bp->rss_conf_obj.ind_table[i] =
2066 ethtool_rxfh_indir_default(i, num_eth_queues);
2069 * For 57710 and 57711 SEARCHER configuration (rss_keys) is
2070 * per-port, so if explicit configuration is needed , do it only
2073 * For 57712 and newer on the other hand it's a per-function
2076 return bnx2x_config_rss_eth(bp, bp->port.pmf || !CHIP_IS_E1x(bp));
2079 int bnx2x_rss(struct bnx2x *bp, struct bnx2x_rss_config_obj *rss_obj,
2080 bool config_hash, bool enable)
2082 struct bnx2x_config_rss_params params = {NULL};
2084 /* Although RSS is meaningless when there is a single HW queue we
2085 * still need it enabled in order to have HW Rx hash generated.
2087 * if (!is_eth_multi(bp))
2088 * bp->multi_mode = ETH_RSS_MODE_DISABLED;
2091 params.rss_obj = rss_obj;
2093 __set_bit(RAMROD_COMP_WAIT, ¶ms.ramrod_flags);
2096 __set_bit(BNX2X_RSS_MODE_REGULAR, ¶ms.rss_flags);
2098 /* RSS configuration */
2099 __set_bit(BNX2X_RSS_IPV4, ¶ms.rss_flags);
2100 __set_bit(BNX2X_RSS_IPV4_TCP, ¶ms.rss_flags);
2101 __set_bit(BNX2X_RSS_IPV6, ¶ms.rss_flags);
2102 __set_bit(BNX2X_RSS_IPV6_TCP, ¶ms.rss_flags);
2103 if (rss_obj->udp_rss_v4)
2104 __set_bit(BNX2X_RSS_IPV4_UDP, ¶ms.rss_flags);
2105 if (rss_obj->udp_rss_v6)
2106 __set_bit(BNX2X_RSS_IPV6_UDP, ¶ms.rss_flags);
2108 if (!CHIP_IS_E1x(bp)) {
2109 /* valid only for TUNN_MODE_VXLAN tunnel mode */
2110 __set_bit(BNX2X_RSS_IPV4_VXLAN, ¶ms.rss_flags);
2111 __set_bit(BNX2X_RSS_IPV6_VXLAN, ¶ms.rss_flags);
2113 /* valid only for TUNN_MODE_GRE tunnel mode */
2114 __set_bit(BNX2X_RSS_TUNN_INNER_HDRS, ¶ms.rss_flags);
2117 __set_bit(BNX2X_RSS_MODE_DISABLED, ¶ms.rss_flags);
2121 params.rss_result_mask = MULTI_MASK;
2123 memcpy(params.ind_table, rss_obj->ind_table, sizeof(params.ind_table));
2127 netdev_rss_key_fill(params.rss_key, T_ETH_RSS_KEY * 4);
2128 __set_bit(BNX2X_RSS_SET_SRCH, ¶ms.rss_flags);
2132 return bnx2x_config_rss(bp, ¶ms);
2134 return bnx2x_vfpf_config_rss(bp, ¶ms);
2137 static int bnx2x_init_hw(struct bnx2x *bp, u32 load_code)
2139 struct bnx2x_func_state_params func_params = {NULL};
2141 /* Prepare parameters for function state transitions */
2142 __set_bit(RAMROD_COMP_WAIT, &func_params.ramrod_flags);
2144 func_params.f_obj = &bp->func_obj;
2145 func_params.cmd = BNX2X_F_CMD_HW_INIT;
2147 func_params.params.hw_init.load_phase = load_code;
2149 return bnx2x_func_state_change(bp, &func_params);
2153 * Cleans the object that have internal lists without sending
2154 * ramrods. Should be run when interrupts are disabled.
2156 void bnx2x_squeeze_objects(struct bnx2x *bp)
2159 unsigned long ramrod_flags = 0, vlan_mac_flags = 0;
2160 struct bnx2x_mcast_ramrod_params rparam = {NULL};
2161 struct bnx2x_vlan_mac_obj *mac_obj = &bp->sp_objs->mac_obj;
2163 /***************** Cleanup MACs' object first *************************/
2165 /* Wait for completion of requested */
2166 __set_bit(RAMROD_COMP_WAIT, &ramrod_flags);
2167 /* Perform a dry cleanup */
2168 __set_bit(RAMROD_DRV_CLR_ONLY, &ramrod_flags);
2170 /* Clean ETH primary MAC */
2171 __set_bit(BNX2X_ETH_MAC, &vlan_mac_flags);
2172 rc = mac_obj->delete_all(bp, &bp->sp_objs->mac_obj, &vlan_mac_flags,
2175 BNX2X_ERR("Failed to clean ETH MACs: %d\n", rc);
2177 /* Cleanup UC list */
2179 __set_bit(BNX2X_UC_LIST_MAC, &vlan_mac_flags);
2180 rc = mac_obj->delete_all(bp, mac_obj, &vlan_mac_flags,
2183 BNX2X_ERR("Failed to clean UC list MACs: %d\n", rc);
2185 /***************** Now clean mcast object *****************************/
2186 rparam.mcast_obj = &bp->mcast_obj;
2187 __set_bit(RAMROD_DRV_CLR_ONLY, &rparam.ramrod_flags);
2189 /* Add a DEL command... - Since we're doing a driver cleanup only,
2190 * we take a lock surrounding both the initial send and the CONTs,
2191 * as we don't want a true completion to disrupt us in the middle.
2193 netif_addr_lock_bh(bp->dev);
2194 rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_DEL);
2196 BNX2X_ERR("Failed to add a new DEL command to a multi-cast object: %d\n",
2199 /* ...and wait until all pending commands are cleared */
2200 rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_CONT);
2203 BNX2X_ERR("Failed to clean multi-cast object: %d\n",
2205 netif_addr_unlock_bh(bp->dev);
2209 rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_CONT);
2211 netif_addr_unlock_bh(bp->dev);
2214 #ifndef BNX2X_STOP_ON_ERROR
2215 #define LOAD_ERROR_EXIT(bp, label) \
2217 (bp)->state = BNX2X_STATE_ERROR; \
2221 #define LOAD_ERROR_EXIT_CNIC(bp, label) \
2223 bp->cnic_loaded = false; \
2226 #else /*BNX2X_STOP_ON_ERROR*/
2227 #define LOAD_ERROR_EXIT(bp, label) \
2229 (bp)->state = BNX2X_STATE_ERROR; \
2233 #define LOAD_ERROR_EXIT_CNIC(bp, label) \
2235 bp->cnic_loaded = false; \
2239 #endif /*BNX2X_STOP_ON_ERROR*/
2241 static void bnx2x_free_fw_stats_mem(struct bnx2x *bp)
2243 BNX2X_PCI_FREE(bp->fw_stats, bp->fw_stats_mapping,
2244 bp->fw_stats_data_sz + bp->fw_stats_req_sz);
2248 static int bnx2x_alloc_fw_stats_mem(struct bnx2x *bp)
2250 int num_groups, vf_headroom = 0;
2251 int is_fcoe_stats = NO_FCOE(bp) ? 0 : 1;
2253 /* number of queues for statistics is number of eth queues + FCoE */
2254 u8 num_queue_stats = BNX2X_NUM_ETH_QUEUES(bp) + is_fcoe_stats;
2256 /* Total number of FW statistics requests =
2257 * 1 for port stats + 1 for PF stats + potential 2 for FCoE (fcoe proper
2258 * and fcoe l2 queue) stats + num of queues (which includes another 1
2259 * for fcoe l2 queue if applicable)
2261 bp->fw_stats_num = 2 + is_fcoe_stats + num_queue_stats;
2263 /* vf stats appear in the request list, but their data is allocated by
2264 * the VFs themselves. We don't include them in the bp->fw_stats_num as
2265 * it is used to determine where to place the vf stats queries in the
2269 vf_headroom = bnx2x_vf_headroom(bp);
2271 /* Request is built from stats_query_header and an array of
2272 * stats_query_cmd_group each of which contains
2273 * STATS_QUERY_CMD_COUNT rules. The real number or requests is
2274 * configured in the stats_query_header.
2277 (((bp->fw_stats_num + vf_headroom) / STATS_QUERY_CMD_COUNT) +
2278 (((bp->fw_stats_num + vf_headroom) % STATS_QUERY_CMD_COUNT) ?
2281 DP(BNX2X_MSG_SP, "stats fw_stats_num %d, vf headroom %d, num_groups %d\n",
2282 bp->fw_stats_num, vf_headroom, num_groups);
2283 bp->fw_stats_req_sz = sizeof(struct stats_query_header) +
2284 num_groups * sizeof(struct stats_query_cmd_group);
2286 /* Data for statistics requests + stats_counter
2287 * stats_counter holds per-STORM counters that are incremented
2288 * when STORM has finished with the current request.
2289 * memory for FCoE offloaded statistics are counted anyway,
2290 * even if they will not be sent.
2291 * VF stats are not accounted for here as the data of VF stats is stored
2292 * in memory allocated by the VF, not here.
2294 bp->fw_stats_data_sz = sizeof(struct per_port_stats) +
2295 sizeof(struct per_pf_stats) +
2296 sizeof(struct fcoe_statistics_params) +
2297 sizeof(struct per_queue_stats) * num_queue_stats +
2298 sizeof(struct stats_counter);
2300 bp->fw_stats = BNX2X_PCI_ALLOC(&bp->fw_stats_mapping,
2301 bp->fw_stats_data_sz + bp->fw_stats_req_sz);
2306 bp->fw_stats_req = (struct bnx2x_fw_stats_req *)bp->fw_stats;
2307 bp->fw_stats_req_mapping = bp->fw_stats_mapping;
2308 bp->fw_stats_data = (struct bnx2x_fw_stats_data *)
2309 ((u8 *)bp->fw_stats + bp->fw_stats_req_sz);
2310 bp->fw_stats_data_mapping = bp->fw_stats_mapping +
2311 bp->fw_stats_req_sz;
2313 DP(BNX2X_MSG_SP, "statistics request base address set to %x %x\n",
2314 U64_HI(bp->fw_stats_req_mapping),
2315 U64_LO(bp->fw_stats_req_mapping));
2316 DP(BNX2X_MSG_SP, "statistics data base address set to %x %x\n",
2317 U64_HI(bp->fw_stats_data_mapping),
2318 U64_LO(bp->fw_stats_data_mapping));
2322 bnx2x_free_fw_stats_mem(bp);
2323 BNX2X_ERR("Can't allocate FW stats memory\n");
2327 /* send load request to mcp and analyze response */
2328 static int bnx2x_nic_load_request(struct bnx2x *bp, u32 *load_code)
2334 (SHMEM_RD(bp, func_mb[BP_FW_MB_IDX(bp)].drv_mb_header) &
2335 DRV_MSG_SEQ_NUMBER_MASK);
2336 BNX2X_DEV_INFO("fw_seq 0x%08x\n", bp->fw_seq);
2338 /* Get current FW pulse sequence */
2339 bp->fw_drv_pulse_wr_seq =
2340 (SHMEM_RD(bp, func_mb[BP_FW_MB_IDX(bp)].drv_pulse_mb) &
2341 DRV_PULSE_SEQ_MASK);
2342 BNX2X_DEV_INFO("drv_pulse 0x%x\n", bp->fw_drv_pulse_wr_seq);
2344 param = DRV_MSG_CODE_LOAD_REQ_WITH_LFA;
2346 if (IS_MF_SD(bp) && bnx2x_port_after_undi(bp))
2347 param |= DRV_MSG_CODE_LOAD_REQ_FORCE_LFA;
2350 (*load_code) = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_REQ, param);
2352 /* if mcp fails to respond we must abort */
2353 if (!(*load_code)) {
2354 BNX2X_ERR("MCP response failure, aborting\n");
2358 /* If mcp refused (e.g. other port is in diagnostic mode) we
2361 if ((*load_code) == FW_MSG_CODE_DRV_LOAD_REFUSED) {
2362 BNX2X_ERR("MCP refused load request, aborting\n");
2368 /* check whether another PF has already loaded FW to chip. In
2369 * virtualized environments a pf from another VM may have already
2370 * initialized the device including loading FW
2372 int bnx2x_compare_fw_ver(struct bnx2x *bp, u32 load_code, bool print_err)
2374 /* is another pf loaded on this engine? */
2375 if (load_code != FW_MSG_CODE_DRV_LOAD_COMMON_CHIP &&
2376 load_code != FW_MSG_CODE_DRV_LOAD_COMMON) {
2377 /* build my FW version dword */
2378 u32 my_fw = (BCM_5710_FW_MAJOR_VERSION) +
2379 (BCM_5710_FW_MINOR_VERSION << 8) +
2380 (BCM_5710_FW_REVISION_VERSION << 16) +
2381 (BCM_5710_FW_ENGINEERING_VERSION << 24);
2383 /* read loaded FW from chip */
2384 u32 loaded_fw = REG_RD(bp, XSEM_REG_PRAM);
2386 DP(BNX2X_MSG_SP, "loaded fw %x, my fw %x\n",
2389 /* abort nic load if version mismatch */
2390 if (my_fw != loaded_fw) {
2392 BNX2X_ERR("bnx2x with FW %x was already loaded which mismatches my %x FW. Aborting\n",
2395 BNX2X_DEV_INFO("bnx2x with FW %x was already loaded which mismatches my %x FW, possibly due to MF UNDI\n",
2403 /* returns the "mcp load_code" according to global load_count array */
2404 static int bnx2x_nic_load_no_mcp(struct bnx2x *bp, int port)
2406 int path = BP_PATH(bp);
2408 DP(NETIF_MSG_IFUP, "NO MCP - load counts[%d] %d, %d, %d\n",
2409 path, bnx2x_load_count[path][0], bnx2x_load_count[path][1],
2410 bnx2x_load_count[path][2]);
2411 bnx2x_load_count[path][0]++;
2412 bnx2x_load_count[path][1 + port]++;
2413 DP(NETIF_MSG_IFUP, "NO MCP - new load counts[%d] %d, %d, %d\n",
2414 path, bnx2x_load_count[path][0], bnx2x_load_count[path][1],
2415 bnx2x_load_count[path][2]);
2416 if (bnx2x_load_count[path][0] == 1)
2417 return FW_MSG_CODE_DRV_LOAD_COMMON;
2418 else if (bnx2x_load_count[path][1 + port] == 1)
2419 return FW_MSG_CODE_DRV_LOAD_PORT;
2421 return FW_MSG_CODE_DRV_LOAD_FUNCTION;
2424 /* mark PMF if applicable */
2425 static void bnx2x_nic_load_pmf(struct bnx2x *bp, u32 load_code)
2427 if ((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) ||
2428 (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP) ||
2429 (load_code == FW_MSG_CODE_DRV_LOAD_PORT)) {
2431 /* We need the barrier to ensure the ordering between the
2432 * writing to bp->port.pmf here and reading it from the
2433 * bnx2x_periodic_task().
2440 DP(NETIF_MSG_LINK, "pmf %d\n", bp->port.pmf);
2443 static void bnx2x_nic_load_afex_dcc(struct bnx2x *bp, int load_code)
2445 if (((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) ||
2446 (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP)) &&
2447 (bp->common.shmem2_base)) {
2448 if (SHMEM2_HAS(bp, dcc_support))
2449 SHMEM2_WR(bp, dcc_support,
2450 (SHMEM_DCC_SUPPORT_DISABLE_ENABLE_PF_TLV |
2451 SHMEM_DCC_SUPPORT_BANDWIDTH_ALLOCATION_TLV));
2452 if (SHMEM2_HAS(bp, afex_driver_support))
2453 SHMEM2_WR(bp, afex_driver_support,
2454 SHMEM_AFEX_SUPPORTED_VERSION_ONE);
2457 /* Set AFEX default VLAN tag to an invalid value */
2458 bp->afex_def_vlan_tag = -1;
2462 * bnx2x_bz_fp - zero content of the fastpath structure.
2464 * @bp: driver handle
2465 * @index: fastpath index to be zeroed
2467 * Makes sure the contents of the bp->fp[index].napi is kept
2470 static void bnx2x_bz_fp(struct bnx2x *bp, int index)
2472 struct bnx2x_fastpath *fp = &bp->fp[index];
2474 struct napi_struct orig_napi = fp->napi;
2475 struct bnx2x_agg_info *orig_tpa_info = fp->tpa_info;
2477 /* bzero bnx2x_fastpath contents */
2479 memset(fp->tpa_info, 0, ETH_MAX_AGGREGATION_QUEUES_E1H_E2 *
2480 sizeof(struct bnx2x_agg_info));
2481 memset(fp, 0, sizeof(*fp));
2483 /* Restore the NAPI object as it has been already initialized */
2484 fp->napi = orig_napi;
2485 fp->tpa_info = orig_tpa_info;
2489 fp->max_cos = bp->max_cos;
2491 /* Special queues support only one CoS */
2494 /* Init txdata pointers */
2496 fp->txdata_ptr[0] = &bp->bnx2x_txq[FCOE_TXQ_IDX(bp)];
2498 for_each_cos_in_tx_queue(fp, cos)
2499 fp->txdata_ptr[cos] = &bp->bnx2x_txq[cos *
2500 BNX2X_NUM_ETH_QUEUES(bp) + index];
2502 /* set the tpa flag for each queue. The tpa flag determines the queue
2503 * minimal size so it must be set prior to queue memory allocation
2505 if (bp->dev->features & NETIF_F_LRO)
2506 fp->mode = TPA_MODE_LRO;
2507 else if (bp->dev->features & NETIF_F_GRO &&
2508 bnx2x_mtu_allows_gro(bp->dev->mtu))
2509 fp->mode = TPA_MODE_GRO;
2511 fp->mode = TPA_MODE_DISABLED;
2513 /* We don't want TPA if it's disabled in bp
2514 * or if this is an FCoE L2 ring.
2516 if (bp->disable_tpa || IS_FCOE_FP(fp))
2517 fp->mode = TPA_MODE_DISABLED;
2520 void bnx2x_set_os_driver_state(struct bnx2x *bp, u32 state)
2524 if (!IS_MF_BD(bp) || !SHMEM2_HAS(bp, os_driver_state) || IS_VF(bp))
2527 cur = SHMEM2_RD(bp, os_driver_state[BP_FW_MB_IDX(bp)]);
2528 DP(NETIF_MSG_IFUP, "Driver state %08x-->%08x\n",
2531 SHMEM2_WR(bp, os_driver_state[BP_FW_MB_IDX(bp)], state);
2534 int bnx2x_load_cnic(struct bnx2x *bp)
2536 int i, rc, port = BP_PORT(bp);
2538 DP(NETIF_MSG_IFUP, "Starting CNIC-related load\n");
2540 mutex_init(&bp->cnic_mutex);
2543 rc = bnx2x_alloc_mem_cnic(bp);
2545 BNX2X_ERR("Unable to allocate bp memory for cnic\n");
2546 LOAD_ERROR_EXIT_CNIC(bp, load_error_cnic0);
2550 rc = bnx2x_alloc_fp_mem_cnic(bp);
2552 BNX2X_ERR("Unable to allocate memory for cnic fps\n");
2553 LOAD_ERROR_EXIT_CNIC(bp, load_error_cnic0);
2556 /* Update the number of queues with the cnic queues */
2557 rc = bnx2x_set_real_num_queues(bp, 1);
2559 BNX2X_ERR("Unable to set real_num_queues including cnic\n");
2560 LOAD_ERROR_EXIT_CNIC(bp, load_error_cnic0);
2563 /* Add all CNIC NAPI objects */
2564 bnx2x_add_all_napi_cnic(bp);
2565 DP(NETIF_MSG_IFUP, "cnic napi added\n");
2566 bnx2x_napi_enable_cnic(bp);
2568 rc = bnx2x_init_hw_func_cnic(bp);
2570 LOAD_ERROR_EXIT_CNIC(bp, load_error_cnic1);
2572 bnx2x_nic_init_cnic(bp);
2575 /* Enable Timer scan */
2576 REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + port*4, 1);
2578 /* setup cnic queues */
2579 for_each_cnic_queue(bp, i) {
2580 rc = bnx2x_setup_queue(bp, &bp->fp[i], 0);
2582 BNX2X_ERR("Queue setup failed\n");
2583 LOAD_ERROR_EXIT(bp, load_error_cnic2);
2588 /* Initialize Rx filter. */
2589 bnx2x_set_rx_mode_inner(bp);
2591 /* re-read iscsi info */
2592 bnx2x_get_iscsi_info(bp);
2593 bnx2x_setup_cnic_irq_info(bp);
2594 bnx2x_setup_cnic_info(bp);
2595 bp->cnic_loaded = true;
2596 if (bp->state == BNX2X_STATE_OPEN)
2597 bnx2x_cnic_notify(bp, CNIC_CTL_START_CMD);
2599 DP(NETIF_MSG_IFUP, "Ending successfully CNIC-related load\n");
2603 #ifndef BNX2X_STOP_ON_ERROR
2605 /* Disable Timer scan */
2606 REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + port*4, 0);
2609 bnx2x_napi_disable_cnic(bp);
2610 /* Update the number of queues without the cnic queues */
2611 if (bnx2x_set_real_num_queues(bp, 0))
2612 BNX2X_ERR("Unable to set real_num_queues not including cnic\n");
2614 BNX2X_ERR("CNIC-related load failed\n");
2615 bnx2x_free_fp_mem_cnic(bp);
2616 bnx2x_free_mem_cnic(bp);
2618 #endif /* ! BNX2X_STOP_ON_ERROR */
2621 /* must be called with rtnl_lock */
2622 int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
2624 int port = BP_PORT(bp);
2625 int i, rc = 0, load_code = 0;
2627 DP(NETIF_MSG_IFUP, "Starting NIC load\n");
2629 "CNIC is %s\n", CNIC_ENABLED(bp) ? "enabled" : "disabled");
2631 #ifdef BNX2X_STOP_ON_ERROR
2632 if (unlikely(bp->panic)) {
2633 BNX2X_ERR("Can't load NIC when there is panic\n");
2638 bp->state = BNX2X_STATE_OPENING_WAIT4_LOAD;
2640 /* zero the structure w/o any lock, before SP handler is initialized */
2641 memset(&bp->last_reported_link, 0, sizeof(bp->last_reported_link));
2642 __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
2643 &bp->last_reported_link.link_report_flags);
2646 /* must be called before memory allocation and HW init */
2647 bnx2x_ilt_set_info(bp);
2650 * Zero fastpath structures preserving invariants like napi, which are
2651 * allocated only once, fp index, max_cos, bp pointer.
2652 * Also set fp->mode and txdata_ptr.
2654 DP(NETIF_MSG_IFUP, "num queues: %d", bp->num_queues);
2655 for_each_queue(bp, i)
2657 memset(bp->bnx2x_txq, 0, (BNX2X_MAX_RSS_COUNT(bp) * BNX2X_MULTI_TX_COS +
2658 bp->num_cnic_queues) *
2659 sizeof(struct bnx2x_fp_txdata));
2661 bp->fcoe_init = false;
2663 /* Set the receive queues buffer size */
2664 bnx2x_set_rx_buf_size(bp);
2667 rc = bnx2x_alloc_mem(bp);
2669 BNX2X_ERR("Unable to allocate bp memory\n");
2674 /* need to be done after alloc mem, since it's self adjusting to amount
2675 * of memory available for RSS queues
2677 rc = bnx2x_alloc_fp_mem(bp);
2679 BNX2X_ERR("Unable to allocate memory for fps\n");
2680 LOAD_ERROR_EXIT(bp, load_error0);
2683 /* Allocated memory for FW statistics */
2684 if (bnx2x_alloc_fw_stats_mem(bp))
2685 LOAD_ERROR_EXIT(bp, load_error0);
2687 /* request pf to initialize status blocks */
2689 rc = bnx2x_vfpf_init(bp);
2691 LOAD_ERROR_EXIT(bp, load_error0);
2694 /* As long as bnx2x_alloc_mem() may possibly update
2695 * bp->num_queues, bnx2x_set_real_num_queues() should always
2696 * come after it. At this stage cnic queues are not counted.
2698 rc = bnx2x_set_real_num_queues(bp, 0);
2700 BNX2X_ERR("Unable to set real_num_queues\n");
2701 LOAD_ERROR_EXIT(bp, load_error0);
2704 /* configure multi cos mappings in kernel.
2705 * this configuration may be overridden by a multi class queue
2706 * discipline or by a dcbx negotiation result.
2708 bnx2x_setup_tc(bp->dev, bp->max_cos);
2710 /* Add all NAPI objects */
2711 bnx2x_add_all_napi(bp);
2712 DP(NETIF_MSG_IFUP, "napi added\n");
2713 bnx2x_napi_enable(bp);
2716 /* set pf load just before approaching the MCP */
2717 bnx2x_set_pf_load(bp);
2719 /* if mcp exists send load request and analyze response */
2720 if (!BP_NOMCP(bp)) {
2721 /* attempt to load pf */
2722 rc = bnx2x_nic_load_request(bp, &load_code);
2724 LOAD_ERROR_EXIT(bp, load_error1);
2726 /* what did mcp say? */
2727 rc = bnx2x_compare_fw_ver(bp, load_code, true);
2729 bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2730 LOAD_ERROR_EXIT(bp, load_error2);
2733 load_code = bnx2x_nic_load_no_mcp(bp, port);
2736 /* mark pmf if applicable */
2737 bnx2x_nic_load_pmf(bp, load_code);
2739 /* Init Function state controlling object */
2740 bnx2x__init_func_obj(bp);
2743 rc = bnx2x_init_hw(bp, load_code);
2745 BNX2X_ERR("HW init failed, aborting\n");
2746 bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2747 LOAD_ERROR_EXIT(bp, load_error2);
2751 bnx2x_pre_irq_nic_init(bp);
2753 /* Connect to IRQs */
2754 rc = bnx2x_setup_irqs(bp);
2756 BNX2X_ERR("setup irqs failed\n");
2758 bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2759 LOAD_ERROR_EXIT(bp, load_error2);
2762 /* Init per-function objects */
2764 /* Setup NIC internals and enable interrupts */
2765 bnx2x_post_irq_nic_init(bp, load_code);
2767 bnx2x_init_bp_objs(bp);
2768 bnx2x_iov_nic_init(bp);
2770 /* Set AFEX default VLAN tag to an invalid value */
2771 bp->afex_def_vlan_tag = -1;
2772 bnx2x_nic_load_afex_dcc(bp, load_code);
2773 bp->state = BNX2X_STATE_OPENING_WAIT4_PORT;
2774 rc = bnx2x_func_start(bp);
2776 BNX2X_ERR("Function start failed!\n");
2777 bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2779 LOAD_ERROR_EXIT(bp, load_error3);
2782 /* Send LOAD_DONE command to MCP */
2783 if (!BP_NOMCP(bp)) {
2784 load_code = bnx2x_fw_command(bp,
2785 DRV_MSG_CODE_LOAD_DONE, 0);
2787 BNX2X_ERR("MCP response failure, aborting\n");
2789 LOAD_ERROR_EXIT(bp, load_error3);
2793 /* initialize FW coalescing state machines in RAM */
2794 bnx2x_update_coalesce(bp);
2797 /* setup the leading queue */
2798 rc = bnx2x_setup_leading(bp);
2800 BNX2X_ERR("Setup leading failed!\n");
2801 LOAD_ERROR_EXIT(bp, load_error3);
2804 /* set up the rest of the queues */
2805 for_each_nondefault_eth_queue(bp, i) {
2807 rc = bnx2x_setup_queue(bp, &bp->fp[i], false);
2809 rc = bnx2x_vfpf_setup_q(bp, &bp->fp[i], false);
2811 BNX2X_ERR("Queue %d setup failed\n", i);
2812 LOAD_ERROR_EXIT(bp, load_error3);
2817 rc = bnx2x_init_rss(bp);
2819 BNX2X_ERR("PF RSS init failed\n");
2820 LOAD_ERROR_EXIT(bp, load_error3);
2823 /* Now when Clients are configured we are ready to work */
2824 bp->state = BNX2X_STATE_OPEN;
2826 /* Configure a ucast MAC */
2828 rc = bnx2x_set_eth_mac(bp, true);
2830 rc = bnx2x_vfpf_config_mac(bp, bp->dev->dev_addr, bp->fp->index,
2833 BNX2X_ERR("Setting Ethernet MAC failed\n");
2834 LOAD_ERROR_EXIT(bp, load_error3);
2837 if (IS_PF(bp) && bp->pending_max) {
2838 bnx2x_update_max_mf_config(bp, bp->pending_max);
2839 bp->pending_max = 0;
2843 rc = bnx2x_initial_phy_init(bp, load_mode);
2845 LOAD_ERROR_EXIT(bp, load_error3);
2847 bp->link_params.feature_config_flags &= ~FEATURE_CONFIG_BOOT_FROM_SAN;
2849 /* Start fast path */
2851 /* Re-configure vlan filters */
2852 rc = bnx2x_vlan_reconfigure_vid(bp);
2854 LOAD_ERROR_EXIT(bp, load_error3);
2856 /* Initialize Rx filter. */
2857 bnx2x_set_rx_mode_inner(bp);
2859 if (bp->flags & PTP_SUPPORTED) {
2861 bnx2x_configure_ptp_filters(bp);
2864 switch (load_mode) {
2866 /* Tx queue should be only re-enabled */
2867 netif_tx_wake_all_queues(bp->dev);
2871 netif_tx_start_all_queues(bp->dev);
2872 smp_mb__after_atomic();
2876 case LOAD_LOOPBACK_EXT:
2877 bp->state = BNX2X_STATE_DIAG;
2885 bnx2x_update_drv_flags(bp, 1 << DRV_FLAGS_PORT_MASK, 0);
2887 bnx2x__link_status_update(bp);
2889 /* start the timer */
2890 mod_timer(&bp->timer, jiffies + bp->current_interval);
2892 if (CNIC_ENABLED(bp))
2893 bnx2x_load_cnic(bp);
2896 bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_GET_DRV_VERSION, 0);
2898 if (IS_PF(bp) && SHMEM2_HAS(bp, drv_capabilities_flag)) {
2899 /* mark driver is loaded in shmem2 */
2901 val = SHMEM2_RD(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)]);
2902 val &= ~DRV_FLAGS_MTU_MASK;
2903 val |= (bp->dev->mtu << DRV_FLAGS_MTU_SHIFT);
2904 SHMEM2_WR(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)],
2905 val | DRV_FLAGS_CAPABILITIES_LOADED_SUPPORTED |
2906 DRV_FLAGS_CAPABILITIES_LOADED_L2);
2909 /* Wait for all pending SP commands to complete */
2910 if (IS_PF(bp) && !bnx2x_wait_sp_comp(bp, ~0x0UL)) {
2911 BNX2X_ERR("Timeout waiting for SP elements to complete\n");
2912 bnx2x_nic_unload(bp, UNLOAD_CLOSE, false);
2916 /* Update driver data for On-Chip MFW dump. */
2918 bnx2x_update_mfw_dump(bp);
2920 /* If PMF - send ADMIN DCBX msg to MFW to initiate DCBX FSM */
2921 if (bp->port.pmf && (bp->state != BNX2X_STATE_DIAG))
2922 bnx2x_dcbx_init(bp, false);
2924 if (!IS_MF_SD_STORAGE_PERSONALITY_ONLY(bp))
2925 bnx2x_set_os_driver_state(bp, OS_DRIVER_STATE_ACTIVE);
2927 DP(NETIF_MSG_IFUP, "Ending successfully NIC load\n");
2931 #ifndef BNX2X_STOP_ON_ERROR
2934 bnx2x_int_disable_sync(bp, 1);
2936 /* Clean queueable objects */
2937 bnx2x_squeeze_objects(bp);
2940 /* Free SKBs, SGEs, TPA pool and driver internals */
2941 bnx2x_free_skbs(bp);
2942 for_each_rx_queue(bp, i)
2943 bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
2948 if (IS_PF(bp) && !BP_NOMCP(bp)) {
2949 bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP, 0);
2950 bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE, 0);
2955 bnx2x_napi_disable(bp);
2956 bnx2x_del_all_napi(bp);
2958 /* clear pf_load status, as it was already set */
2960 bnx2x_clear_pf_load(bp);
2962 bnx2x_free_fw_stats_mem(bp);
2963 bnx2x_free_fp_mem(bp);
2967 #endif /* ! BNX2X_STOP_ON_ERROR */
2970 int bnx2x_drain_tx_queues(struct bnx2x *bp)
2974 /* Wait until tx fastpath tasks complete */
2975 for_each_tx_queue(bp, i) {
2976 struct bnx2x_fastpath *fp = &bp->fp[i];
2978 for_each_cos_in_tx_queue(fp, cos)
2979 rc = bnx2x_clean_tx_queue(bp, fp->txdata_ptr[cos]);
2986 /* must be called with rtnl_lock */
2987 int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode, bool keep_link)
2990 bool global = false;
2992 DP(NETIF_MSG_IFUP, "Starting NIC unload\n");
2994 if (!IS_MF_SD_STORAGE_PERSONALITY_ONLY(bp))
2995 bnx2x_set_os_driver_state(bp, OS_DRIVER_STATE_DISABLED);
2997 /* mark driver is unloaded in shmem2 */
2998 if (IS_PF(bp) && SHMEM2_HAS(bp, drv_capabilities_flag)) {
3000 val = SHMEM2_RD(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)]);
3001 SHMEM2_WR(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)],
3002 val & ~DRV_FLAGS_CAPABILITIES_LOADED_L2);
3005 if (IS_PF(bp) && bp->recovery_state != BNX2X_RECOVERY_DONE &&
3006 (bp->state == BNX2X_STATE_CLOSED ||
3007 bp->state == BNX2X_STATE_ERROR)) {
3008 /* We can get here if the driver has been unloaded
3009 * during parity error recovery and is either waiting for a
3010 * leader to complete or for other functions to unload and
3011 * then ifdown has been issued. In this case we want to
3012 * unload and let other functions to complete a recovery
3015 bp->recovery_state = BNX2X_RECOVERY_DONE;
3017 bnx2x_release_leader_lock(bp);
3020 DP(NETIF_MSG_IFDOWN, "Releasing a leadership...\n");
3021 BNX2X_ERR("Can't unload in closed or error state\n");
3025 /* Nothing to do during unload if previous bnx2x_nic_load()
3026 * have not completed successfully - all resources are released.
3028 * we can get here only after unsuccessful ndo_* callback, during which
3029 * dev->IFF_UP flag is still on.
3031 if (bp->state == BNX2X_STATE_CLOSED || bp->state == BNX2X_STATE_ERROR)
3034 /* It's important to set the bp->state to the value different from
3035 * BNX2X_STATE_OPEN and only then stop the Tx. Otherwise bnx2x_tx_int()
3036 * may restart the Tx from the NAPI context (see bnx2x_tx_int()).
3038 bp->state = BNX2X_STATE_CLOSING_WAIT4_HALT;
3041 /* indicate to VFs that the PF is going down */
3042 bnx2x_iov_channel_down(bp);
3044 if (CNIC_LOADED(bp))
3045 bnx2x_cnic_notify(bp, CNIC_CTL_STOP_CMD);
3048 bnx2x_tx_disable(bp);
3049 netdev_reset_tc(bp->dev);
3051 bp->rx_mode = BNX2X_RX_MODE_NONE;
3053 del_timer_sync(&bp->timer);
3056 /* Set ALWAYS_ALIVE bit in shmem */
3057 bp->fw_drv_pulse_wr_seq |= DRV_PULSE_ALWAYS_ALIVE;
3058 bnx2x_drv_pulse(bp);
3059 bnx2x_stats_handle(bp, STATS_EVENT_STOP);
3060 bnx2x_save_statistics(bp);
3063 /* wait till consumers catch up with producers in all queues */
3064 bnx2x_drain_tx_queues(bp);
3066 /* if VF indicate to PF this function is going down (PF will delete sp
3067 * elements and clear initializations
3070 bnx2x_vfpf_close_vf(bp);
3071 else if (unload_mode != UNLOAD_RECOVERY)
3072 /* if this is a normal/close unload need to clean up chip*/
3073 bnx2x_chip_cleanup(bp, unload_mode, keep_link);
3075 /* Send the UNLOAD_REQUEST to the MCP */
3076 bnx2x_send_unload_req(bp, unload_mode);
3078 /* Prevent transactions to host from the functions on the
3079 * engine that doesn't reset global blocks in case of global
3080 * attention once global blocks are reset and gates are opened
3081 * (the engine which leader will perform the recovery
3084 if (!CHIP_IS_E1x(bp))
3085 bnx2x_pf_disable(bp);
3087 /* Disable HW interrupts, NAPI */
3088 bnx2x_netif_stop(bp, 1);
3089 /* Delete all NAPI objects */
3090 bnx2x_del_all_napi(bp);
3091 if (CNIC_LOADED(bp))
3092 bnx2x_del_all_napi_cnic(bp);
3096 /* Report UNLOAD_DONE to MCP */
3097 bnx2x_send_unload_done(bp, false);
3101 * At this stage no more interrupts will arrive so we may safely clean
3102 * the queueable objects here in case they failed to get cleaned so far.
3105 bnx2x_squeeze_objects(bp);
3107 /* There should be no more pending SP commands at this stage */
3112 /* clear pending work in rtnl task */
3113 bp->sp_rtnl_state = 0;
3116 /* Free SKBs, SGEs, TPA pool and driver internals */
3117 bnx2x_free_skbs(bp);
3118 if (CNIC_LOADED(bp))
3119 bnx2x_free_skbs_cnic(bp);
3120 for_each_rx_queue(bp, i)
3121 bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
3123 bnx2x_free_fp_mem(bp);
3124 if (CNIC_LOADED(bp))
3125 bnx2x_free_fp_mem_cnic(bp);
3128 if (CNIC_LOADED(bp))
3129 bnx2x_free_mem_cnic(bp);
3133 bp->state = BNX2X_STATE_CLOSED;
3134 bp->cnic_loaded = false;
3136 /* Clear driver version indication in shmem */
3138 bnx2x_update_mng_version(bp);
3140 /* Check if there are pending parity attentions. If there are - set
3141 * RECOVERY_IN_PROGRESS.
3143 if (IS_PF(bp) && bnx2x_chk_parity_attn(bp, &global, false)) {
3144 bnx2x_set_reset_in_progress(bp);
3146 /* Set RESET_IS_GLOBAL if needed */
3148 bnx2x_set_reset_global(bp);
3151 /* The last driver must disable a "close the gate" if there is no
3152 * parity attention or "process kill" pending.
3155 !bnx2x_clear_pf_load(bp) &&
3156 bnx2x_reset_is_done(bp, BP_PATH(bp)))
3157 bnx2x_disable_close_the_gate(bp);
3159 DP(NETIF_MSG_IFUP, "Ending NIC unload\n");
3164 int bnx2x_set_power_state(struct bnx2x *bp, pci_power_t state)
3168 /* If there is no power capability, silently succeed */
3169 if (!bp->pdev->pm_cap) {
3170 BNX2X_DEV_INFO("No power capability. Breaking.\n");
3174 pci_read_config_word(bp->pdev, bp->pdev->pm_cap + PCI_PM_CTRL, &pmcsr);
3178 pci_write_config_word(bp->pdev, bp->pdev->pm_cap + PCI_PM_CTRL,
3179 ((pmcsr & ~PCI_PM_CTRL_STATE_MASK) |
3180 PCI_PM_CTRL_PME_STATUS));
3182 if (pmcsr & PCI_PM_CTRL_STATE_MASK)
3183 /* delay required during transition out of D3hot */
3188 /* If there are other clients above don't
3189 shut down the power */
3190 if (atomic_read(&bp->pdev->enable_cnt) != 1)
3192 /* Don't shut down the power for emulation and FPGA */
3193 if (CHIP_REV_IS_SLOW(bp))
3196 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
3200 pmcsr |= PCI_PM_CTRL_PME_ENABLE;
3202 pci_write_config_word(bp->pdev, bp->pdev->pm_cap + PCI_PM_CTRL,
3205 /* No more memory access after this point until
3206 * device is brought back to D0.
3211 dev_err(&bp->pdev->dev, "Can't support state = %d\n", state);
3218 * net_device service functions
3220 static int bnx2x_poll(struct napi_struct *napi, int budget)
3224 struct bnx2x_fastpath *fp = container_of(napi, struct bnx2x_fastpath,
3226 struct bnx2x *bp = fp->bp;
3229 #ifdef BNX2X_STOP_ON_ERROR
3230 if (unlikely(bp->panic)) {
3231 napi_complete(napi);
3235 if (!bnx2x_fp_lock_napi(fp))
3238 for_each_cos_in_tx_queue(fp, cos)
3239 if (bnx2x_tx_queue_has_work(fp->txdata_ptr[cos]))
3240 bnx2x_tx_int(bp, fp->txdata_ptr[cos]);
3242 if (bnx2x_has_rx_work(fp)) {
3243 work_done += bnx2x_rx_int(fp, budget - work_done);
3245 /* must not complete if we consumed full budget */
3246 if (work_done >= budget) {
3247 bnx2x_fp_unlock_napi(fp);
3252 bnx2x_fp_unlock_napi(fp);
3254 /* Fall out from the NAPI loop if needed */
3255 if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) {
3257 /* No need to update SB for FCoE L2 ring as long as
3258 * it's connected to the default SB and the SB
3259 * has been updated when NAPI was scheduled.
3261 if (IS_FCOE_FP(fp)) {
3262 napi_complete(napi);
3265 bnx2x_update_fpsb_idx(fp);
3266 /* bnx2x_has_rx_work() reads the status block,
3267 * thus we need to ensure that status block indices
3268 * have been actually read (bnx2x_update_fpsb_idx)
3269 * prior to this check (bnx2x_has_rx_work) so that
3270 * we won't write the "newer" value of the status block
3271 * to IGU (if there was a DMA right after
3272 * bnx2x_has_rx_work and if there is no rmb, the memory
3273 * reading (bnx2x_update_fpsb_idx) may be postponed
3274 * to right before bnx2x_ack_sb). In this case there
3275 * will never be another interrupt until there is
3276 * another update of the status block, while there
3277 * is still unhandled work.
3281 if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) {
3282 napi_complete(napi);
3283 /* Re-enable interrupts */
3284 DP(NETIF_MSG_RX_STATUS,
3285 "Update index to %d\n", fp->fp_hc_idx);
3286 bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID,
3287 le16_to_cpu(fp->fp_hc_idx),
3297 #ifdef CONFIG_NET_RX_BUSY_POLL
3298 /* must be called with local_bh_disable()d */
3299 int bnx2x_low_latency_recv(struct napi_struct *napi)
3301 struct bnx2x_fastpath *fp = container_of(napi, struct bnx2x_fastpath,
3303 struct bnx2x *bp = fp->bp;
3306 if ((bp->state == BNX2X_STATE_CLOSED) ||
3307 (bp->state == BNX2X_STATE_ERROR) ||
3308 (bp->dev->features & (NETIF_F_LRO | NETIF_F_GRO)))
3309 return LL_FLUSH_FAILED;
3311 if (!bnx2x_fp_lock_poll(fp))
3312 return LL_FLUSH_BUSY;
3314 if (bnx2x_has_rx_work(fp))
3315 found = bnx2x_rx_int(fp, 4);
3317 bnx2x_fp_unlock_poll(fp);
3323 /* we split the first BD into headers and data BDs
3324 * to ease the pain of our fellow microcode engineers
3325 * we use one mapping for both BDs
3327 static u16 bnx2x_tx_split(struct bnx2x *bp,
3328 struct bnx2x_fp_txdata *txdata,
3329 struct sw_tx_bd *tx_buf,
3330 struct eth_tx_start_bd **tx_bd, u16 hlen,
3333 struct eth_tx_start_bd *h_tx_bd = *tx_bd;
3334 struct eth_tx_bd *d_tx_bd;
3336 int old_len = le16_to_cpu(h_tx_bd->nbytes);
3338 /* first fix first BD */
3339 h_tx_bd->nbytes = cpu_to_le16(hlen);
3341 DP(NETIF_MSG_TX_QUEUED, "TSO split header size is %d (%x:%x)\n",
3342 h_tx_bd->nbytes, h_tx_bd->addr_hi, h_tx_bd->addr_lo);
3344 /* now get a new data BD
3345 * (after the pbd) and fill it */
3346 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
3347 d_tx_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
3349 mapping = HILO_U64(le32_to_cpu(h_tx_bd->addr_hi),
3350 le32_to_cpu(h_tx_bd->addr_lo)) + hlen;
3352 d_tx_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
3353 d_tx_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
3354 d_tx_bd->nbytes = cpu_to_le16(old_len - hlen);
3356 /* this marks the BD as one that has no individual mapping */
3357 tx_buf->flags |= BNX2X_TSO_SPLIT_BD;
3359 DP(NETIF_MSG_TX_QUEUED,
3360 "TSO split data size is %d (%x:%x)\n",
3361 d_tx_bd->nbytes, d_tx_bd->addr_hi, d_tx_bd->addr_lo);
3364 *tx_bd = (struct eth_tx_start_bd *)d_tx_bd;
3369 #define bswab32(b32) ((__force __le32) swab32((__force __u32) (b32)))
3370 #define bswab16(b16) ((__force __le16) swab16((__force __u16) (b16)))
3371 static __le16 bnx2x_csum_fix(unsigned char *t_header, u16 csum, s8 fix)
3373 __sum16 tsum = (__force __sum16) csum;
3376 tsum = ~csum_fold(csum_sub((__force __wsum) csum,
3377 csum_partial(t_header - fix, fix, 0)));
3380 tsum = ~csum_fold(csum_add((__force __wsum) csum,
3381 csum_partial(t_header, -fix, 0)));
3383 return bswab16(tsum);
3386 static u32 bnx2x_xmit_type(struct bnx2x *bp, struct sk_buff *skb)
3392 if (skb->ip_summed != CHECKSUM_PARTIAL)
3395 protocol = vlan_get_protocol(skb);
3396 if (protocol == htons(ETH_P_IPV6)) {
3398 prot = ipv6_hdr(skb)->nexthdr;
3401 prot = ip_hdr(skb)->protocol;
3404 if (!CHIP_IS_E1x(bp) && skb->encapsulation) {
3405 if (inner_ip_hdr(skb)->version == 6) {
3406 rc |= XMIT_CSUM_ENC_V6;
3407 if (inner_ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
3408 rc |= XMIT_CSUM_TCP;
3410 rc |= XMIT_CSUM_ENC_V4;
3411 if (inner_ip_hdr(skb)->protocol == IPPROTO_TCP)
3412 rc |= XMIT_CSUM_TCP;
3415 if (prot == IPPROTO_TCP)
3416 rc |= XMIT_CSUM_TCP;
3418 if (skb_is_gso(skb)) {
3419 if (skb_is_gso_v6(skb)) {
3420 rc |= (XMIT_GSO_V6 | XMIT_CSUM_TCP);
3421 if (rc & XMIT_CSUM_ENC)
3422 rc |= XMIT_GSO_ENC_V6;
3424 rc |= (XMIT_GSO_V4 | XMIT_CSUM_TCP);
3425 if (rc & XMIT_CSUM_ENC)
3426 rc |= XMIT_GSO_ENC_V4;
3433 #if (MAX_SKB_FRAGS >= MAX_FETCH_BD - 3)
3434 /* check if packet requires linearization (packet is too fragmented)
3435 no need to check fragmentation if page size > 8K (there will be no
3436 violation to FW restrictions) */
3437 static int bnx2x_pkt_req_lin(struct bnx2x *bp, struct sk_buff *skb,
3442 int first_bd_sz = 0;
3444 /* 3 = 1 (for linear data BD) + 2 (for PBD and last BD) */
3445 if (skb_shinfo(skb)->nr_frags >= (MAX_FETCH_BD - 3)) {
3447 if (xmit_type & XMIT_GSO) {
3448 unsigned short lso_mss = skb_shinfo(skb)->gso_size;
3449 /* Check if LSO packet needs to be copied:
3450 3 = 1 (for headers BD) + 2 (for PBD and last BD) */
3451 int wnd_size = MAX_FETCH_BD - 3;
3452 /* Number of windows to check */
3453 int num_wnds = skb_shinfo(skb)->nr_frags - wnd_size;
3458 /* Headers length */
3459 if (xmit_type & XMIT_GSO_ENC)
3460 hlen = (int)(skb_inner_transport_header(skb) -
3462 inner_tcp_hdrlen(skb);
3464 hlen = (int)(skb_transport_header(skb) -
3465 skb->data) + tcp_hdrlen(skb);
3467 /* Amount of data (w/o headers) on linear part of SKB*/
3468 first_bd_sz = skb_headlen(skb) - hlen;
3470 wnd_sum = first_bd_sz;
3472 /* Calculate the first sum - it's special */
3473 for (frag_idx = 0; frag_idx < wnd_size - 1; frag_idx++)
3475 skb_frag_size(&skb_shinfo(skb)->frags[frag_idx]);
3477 /* If there was data on linear skb data - check it */
3478 if (first_bd_sz > 0) {
3479 if (unlikely(wnd_sum < lso_mss)) {
3484 wnd_sum -= first_bd_sz;
3487 /* Others are easier: run through the frag list and
3488 check all windows */
3489 for (wnd_idx = 0; wnd_idx <= num_wnds; wnd_idx++) {
3491 skb_frag_size(&skb_shinfo(skb)->frags[wnd_idx + wnd_size - 1]);
3493 if (unlikely(wnd_sum < lso_mss)) {
3498 skb_frag_size(&skb_shinfo(skb)->frags[wnd_idx]);
3501 /* in non-LSO too fragmented packet should always
3508 if (unlikely(to_copy))
3509 DP(NETIF_MSG_TX_QUEUED,
3510 "Linearization IS REQUIRED for %s packet. num_frags %d hlen %d first_bd_sz %d\n",
3511 (xmit_type & XMIT_GSO) ? "LSO" : "non-LSO",
3512 skb_shinfo(skb)->nr_frags, hlen, first_bd_sz);
3519 * bnx2x_set_pbd_gso - update PBD in GSO case.
3523 * @xmit_type: xmit flags
3525 static void bnx2x_set_pbd_gso(struct sk_buff *skb,
3526 struct eth_tx_parse_bd_e1x *pbd,
3529 pbd->lso_mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
3530 pbd->tcp_send_seq = bswab32(tcp_hdr(skb)->seq);
3531 pbd->tcp_flags = pbd_tcp_flags(tcp_hdr(skb));
3533 if (xmit_type & XMIT_GSO_V4) {
3534 pbd->ip_id = bswab16(ip_hdr(skb)->id);
3535 pbd->tcp_pseudo_csum =
3536 bswab16(~csum_tcpudp_magic(ip_hdr(skb)->saddr,
3538 0, IPPROTO_TCP, 0));
3540 pbd->tcp_pseudo_csum =
3541 bswab16(~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
3542 &ipv6_hdr(skb)->daddr,
3543 0, IPPROTO_TCP, 0));
3547 cpu_to_le16(ETH_TX_PARSE_BD_E1X_PSEUDO_CS_WITHOUT_LEN);
3551 * bnx2x_set_pbd_csum_enc - update PBD with checksum and return header length
3553 * @bp: driver handle
3555 * @parsing_data: data to be updated
3556 * @xmit_type: xmit flags
3558 * 57712/578xx related, when skb has encapsulation
3560 static u8 bnx2x_set_pbd_csum_enc(struct bnx2x *bp, struct sk_buff *skb,
3561 u32 *parsing_data, u32 xmit_type)
3564 ((((u8 *)skb_inner_transport_header(skb) - skb->data) >> 1) <<
3565 ETH_TX_PARSE_BD_E2_L4_HDR_START_OFFSET_W_SHIFT) &
3566 ETH_TX_PARSE_BD_E2_L4_HDR_START_OFFSET_W;
3568 if (xmit_type & XMIT_CSUM_TCP) {
3569 *parsing_data |= ((inner_tcp_hdrlen(skb) / 4) <<
3570 ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW_SHIFT) &
3571 ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW;
3573 return skb_inner_transport_header(skb) +
3574 inner_tcp_hdrlen(skb) - skb->data;
3577 /* We support checksum offload for TCP and UDP only.
3578 * No need to pass the UDP header length - it's a constant.
3580 return skb_inner_transport_header(skb) +
3581 sizeof(struct udphdr) - skb->data;
3585 * bnx2x_set_pbd_csum_e2 - update PBD with checksum and return header length
3587 * @bp: driver handle
3589 * @parsing_data: data to be updated
3590 * @xmit_type: xmit flags
3592 * 57712/578xx related
3594 static u8 bnx2x_set_pbd_csum_e2(struct bnx2x *bp, struct sk_buff *skb,
3595 u32 *parsing_data, u32 xmit_type)
3598 ((((u8 *)skb_transport_header(skb) - skb->data) >> 1) <<
3599 ETH_TX_PARSE_BD_E2_L4_HDR_START_OFFSET_W_SHIFT) &
3600 ETH_TX_PARSE_BD_E2_L4_HDR_START_OFFSET_W;
3602 if (xmit_type & XMIT_CSUM_TCP) {
3603 *parsing_data |= ((tcp_hdrlen(skb) / 4) <<
3604 ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW_SHIFT) &
3605 ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW;
3607 return skb_transport_header(skb) + tcp_hdrlen(skb) - skb->data;
3609 /* We support checksum offload for TCP and UDP only.
3610 * No need to pass the UDP header length - it's a constant.
3612 return skb_transport_header(skb) + sizeof(struct udphdr) - skb->data;
3615 /* set FW indication according to inner or outer protocols if tunneled */
3616 static void bnx2x_set_sbd_csum(struct bnx2x *bp, struct sk_buff *skb,
3617 struct eth_tx_start_bd *tx_start_bd,
3620 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_L4_CSUM;
3622 if (xmit_type & (XMIT_CSUM_ENC_V6 | XMIT_CSUM_V6))
3623 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_IPV6;
3625 if (!(xmit_type & XMIT_CSUM_TCP))
3626 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_IS_UDP;
3630 * bnx2x_set_pbd_csum - update PBD with checksum and return header length
3632 * @bp: driver handle
3634 * @pbd: parse BD to be updated
3635 * @xmit_type: xmit flags
3637 static u8 bnx2x_set_pbd_csum(struct bnx2x *bp, struct sk_buff *skb,
3638 struct eth_tx_parse_bd_e1x *pbd,
3641 u8 hlen = (skb_network_header(skb) - skb->data) >> 1;
3643 /* for now NS flag is not used in Linux */
3646 ((skb->protocol == cpu_to_be16(ETH_P_8021Q)) <<
3647 ETH_TX_PARSE_BD_E1X_LLC_SNAP_EN_SHIFT));
3649 pbd->ip_hlen_w = (skb_transport_header(skb) -
3650 skb_network_header(skb)) >> 1;
3652 hlen += pbd->ip_hlen_w;
3654 /* We support checksum offload for TCP and UDP only */
3655 if (xmit_type & XMIT_CSUM_TCP)
3656 hlen += tcp_hdrlen(skb) / 2;
3658 hlen += sizeof(struct udphdr) / 2;
3660 pbd->total_hlen_w = cpu_to_le16(hlen);
3663 if (xmit_type & XMIT_CSUM_TCP) {
3664 pbd->tcp_pseudo_csum = bswab16(tcp_hdr(skb)->check);
3667 s8 fix = SKB_CS_OFF(skb); /* signed! */
3669 DP(NETIF_MSG_TX_QUEUED,
3670 "hlen %d fix %d csum before fix %x\n",
3671 le16_to_cpu(pbd->total_hlen_w), fix, SKB_CS(skb));
3673 /* HW bug: fixup the CSUM */
3674 pbd->tcp_pseudo_csum =
3675 bnx2x_csum_fix(skb_transport_header(skb),
3678 DP(NETIF_MSG_TX_QUEUED, "csum after fix %x\n",
3679 pbd->tcp_pseudo_csum);
3685 static void bnx2x_update_pbds_gso_enc(struct sk_buff *skb,
3686 struct eth_tx_parse_bd_e2 *pbd_e2,
3687 struct eth_tx_parse_2nd_bd *pbd2,
3692 u8 outerip_off, outerip_len = 0;
3694 /* from outer IP to transport */
3695 hlen_w = (skb_inner_transport_header(skb) -
3696 skb_network_header(skb)) >> 1;
3699 hlen_w += inner_tcp_hdrlen(skb) >> 1;
3701 pbd2->fw_ip_hdr_to_payload_w = hlen_w;
3703 /* outer IP header info */
3704 if (xmit_type & XMIT_CSUM_V4) {
3705 struct iphdr *iph = ip_hdr(skb);
3706 u32 csum = (__force u32)(~iph->check) -
3707 (__force u32)iph->tot_len -
3708 (__force u32)iph->frag_off;
3710 outerip_len = iph->ihl << 1;
3712 pbd2->fw_ip_csum_wo_len_flags_frag =
3713 bswab16(csum_fold((__force __wsum)csum));
3715 pbd2->fw_ip_hdr_to_payload_w =
3716 hlen_w - ((sizeof(struct ipv6hdr)) >> 1);
3717 pbd_e2->data.tunnel_data.flags |=
3718 ETH_TUNNEL_DATA_IPV6_OUTER;
3721 pbd2->tcp_send_seq = bswab32(inner_tcp_hdr(skb)->seq);
3723 pbd2->tcp_flags = pbd_tcp_flags(inner_tcp_hdr(skb));
3725 /* inner IP header info */
3726 if (xmit_type & XMIT_CSUM_ENC_V4) {
3727 pbd2->hw_ip_id = bswab16(inner_ip_hdr(skb)->id);
3729 pbd_e2->data.tunnel_data.pseudo_csum =
3730 bswab16(~csum_tcpudp_magic(
3731 inner_ip_hdr(skb)->saddr,
3732 inner_ip_hdr(skb)->daddr,
3733 0, IPPROTO_TCP, 0));
3735 pbd_e2->data.tunnel_data.pseudo_csum =
3736 bswab16(~csum_ipv6_magic(
3737 &inner_ipv6_hdr(skb)->saddr,
3738 &inner_ipv6_hdr(skb)->daddr,
3739 0, IPPROTO_TCP, 0));
3742 outerip_off = (skb_network_header(skb) - skb->data) >> 1;
3747 ETH_TX_PARSE_2ND_BD_IP_HDR_LEN_OUTER_W_SHIFT) |
3748 ((skb->protocol == cpu_to_be16(ETH_P_8021Q)) <<
3749 ETH_TX_PARSE_2ND_BD_LLC_SNAP_EN_SHIFT);
3751 if (ip_hdr(skb)->protocol == IPPROTO_UDP) {
3752 SET_FLAG(*global_data, ETH_TX_PARSE_2ND_BD_TUNNEL_UDP_EXIST, 1);
3753 pbd2->tunnel_udp_hdr_start_w = skb_transport_offset(skb) >> 1;
3757 static inline void bnx2x_set_ipv6_ext_e2(struct sk_buff *skb, u32 *parsing_data,
3760 struct ipv6hdr *ipv6;
3762 if (!(xmit_type & (XMIT_GSO_ENC_V6 | XMIT_GSO_V6)))
3765 if (xmit_type & XMIT_GSO_ENC_V6)
3766 ipv6 = inner_ipv6_hdr(skb);
3767 else /* XMIT_GSO_V6 */
3768 ipv6 = ipv6_hdr(skb);
3770 if (ipv6->nexthdr == NEXTHDR_IPV6)
3771 *parsing_data |= ETH_TX_PARSE_BD_E2_IPV6_WITH_EXT_HDR;
3774 /* called with netif_tx_lock
3775 * bnx2x_tx_int() runs without netif_tx_lock unless it needs to call
3776 * netif_wake_queue()
3778 netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
3780 struct bnx2x *bp = netdev_priv(dev);
3782 struct netdev_queue *txq;
3783 struct bnx2x_fp_txdata *txdata;
3784 struct sw_tx_bd *tx_buf;
3785 struct eth_tx_start_bd *tx_start_bd, *first_bd;
3786 struct eth_tx_bd *tx_data_bd, *total_pkt_bd = NULL;
3787 struct eth_tx_parse_bd_e1x *pbd_e1x = NULL;
3788 struct eth_tx_parse_bd_e2 *pbd_e2 = NULL;
3789 struct eth_tx_parse_2nd_bd *pbd2 = NULL;
3790 u32 pbd_e2_parsing_data = 0;
3791 u16 pkt_prod, bd_prod;
3794 u32 xmit_type = bnx2x_xmit_type(bp, skb);
3797 __le16 pkt_size = 0;
3799 u8 mac_type = UNICAST_ADDRESS;
3801 #ifdef BNX2X_STOP_ON_ERROR
3802 if (unlikely(bp->panic))
3803 return NETDEV_TX_BUSY;
3806 txq_index = skb_get_queue_mapping(skb);
3807 txq = netdev_get_tx_queue(dev, txq_index);
3809 BUG_ON(txq_index >= MAX_ETH_TXQ_IDX(bp) + (CNIC_LOADED(bp) ? 1 : 0));
3811 txdata = &bp->bnx2x_txq[txq_index];
3813 /* enable this debug print to view the transmission queue being used
3814 DP(NETIF_MSG_TX_QUEUED, "indices: txq %d, fp %d, txdata %d\n",
3815 txq_index, fp_index, txdata_index); */
3817 /* enable this debug print to view the transmission details
3818 DP(NETIF_MSG_TX_QUEUED,
3819 "transmitting packet cid %d fp index %d txdata_index %d tx_data ptr %p fp pointer %p\n",
3820 txdata->cid, fp_index, txdata_index, txdata, fp); */
3822 if (unlikely(bnx2x_tx_avail(bp, txdata) <
3823 skb_shinfo(skb)->nr_frags +
3825 NEXT_CNT_PER_TX_PKT(MAX_BDS_PER_TX_PKT))) {
3826 /* Handle special storage cases separately */
3827 if (txdata->tx_ring_size == 0) {
3828 struct bnx2x_eth_q_stats *q_stats =
3829 bnx2x_fp_qstats(bp, txdata->parent_fp);
3830 q_stats->driver_filtered_tx_pkt++;
3832 return NETDEV_TX_OK;
3834 bnx2x_fp_qstats(bp, txdata->parent_fp)->driver_xoff++;
3835 netif_tx_stop_queue(txq);
3836 BNX2X_ERR("BUG! Tx ring full when queue awake!\n");
3838 return NETDEV_TX_BUSY;
3841 DP(NETIF_MSG_TX_QUEUED,
3842 "queue[%d]: SKB: summed %x protocol %x protocol(%x,%x) gso type %x xmit_type %x len %d\n",
3843 txq_index, skb->ip_summed, skb->protocol, ipv6_hdr(skb)->nexthdr,
3844 ip_hdr(skb)->protocol, skb_shinfo(skb)->gso_type, xmit_type,
3847 eth = (struct ethhdr *)skb->data;
3849 /* set flag according to packet type (UNICAST_ADDRESS is default)*/
3850 if (unlikely(is_multicast_ether_addr(eth->h_dest))) {
3851 if (is_broadcast_ether_addr(eth->h_dest))
3852 mac_type = BROADCAST_ADDRESS;
3854 mac_type = MULTICAST_ADDRESS;
3857 #if (MAX_SKB_FRAGS >= MAX_FETCH_BD - BDS_PER_TX_PKT)
3858 /* First, check if we need to linearize the skb (due to FW
3859 restrictions). No need to check fragmentation if page size > 8K
3860 (there will be no violation to FW restrictions) */
3861 if (bnx2x_pkt_req_lin(bp, skb, xmit_type)) {
3862 /* Statistics of linearization */
3864 if (skb_linearize(skb) != 0) {
3865 DP(NETIF_MSG_TX_QUEUED,
3866 "SKB linearization failed - silently dropping this SKB\n");
3867 dev_kfree_skb_any(skb);
3868 return NETDEV_TX_OK;
3872 /* Map skb linear data for DMA */
3873 mapping = dma_map_single(&bp->pdev->dev, skb->data,
3874 skb_headlen(skb), DMA_TO_DEVICE);
3875 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
3876 DP(NETIF_MSG_TX_QUEUED,
3877 "SKB mapping failed - silently dropping this SKB\n");
3878 dev_kfree_skb_any(skb);
3879 return NETDEV_TX_OK;
3882 Please read carefully. First we use one BD which we mark as start,
3883 then we have a parsing info BD (used for TSO or xsum),
3884 and only then we have the rest of the TSO BDs.
3885 (don't forget to mark the last one as last,
3886 and to unmap only AFTER you write to the BD ...)
3887 And above all, all pdb sizes are in words - NOT DWORDS!
3890 /* get current pkt produced now - advance it just before sending packet
3891 * since mapping of pages may fail and cause packet to be dropped
3893 pkt_prod = txdata->tx_pkt_prod;
3894 bd_prod = TX_BD(txdata->tx_bd_prod);
3896 /* get a tx_buf and first BD
3897 * tx_start_bd may be changed during SPLIT,
3898 * but first_bd will always stay first
3900 tx_buf = &txdata->tx_buf_ring[TX_BD(pkt_prod)];
3901 tx_start_bd = &txdata->tx_desc_ring[bd_prod].start_bd;
3902 first_bd = tx_start_bd;
3904 tx_start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
3906 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
3907 if (!(bp->flags & TX_TIMESTAMPING_EN)) {
3908 BNX2X_ERR("Tx timestamping was not enabled, this packet will not be timestamped\n");
3909 } else if (bp->ptp_tx_skb) {
3910 BNX2X_ERR("The device supports only a single outstanding packet to timestamp, this packet will not be timestamped\n");
3912 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
3913 /* schedule check for Tx timestamp */
3914 bp->ptp_tx_skb = skb_get(skb);
3915 bp->ptp_tx_start = jiffies;
3916 schedule_work(&bp->ptp_task);
3920 /* header nbd: indirectly zero other flags! */
3921 tx_start_bd->general_data = 1 << ETH_TX_START_BD_HDR_NBDS_SHIFT;
3923 /* remember the first BD of the packet */
3924 tx_buf->first_bd = txdata->tx_bd_prod;
3928 DP(NETIF_MSG_TX_QUEUED,
3929 "sending pkt %u @%p next_idx %u bd %u @%p\n",
3930 pkt_prod, tx_buf, txdata->tx_pkt_prod, bd_prod, tx_start_bd);
3932 if (skb_vlan_tag_present(skb)) {
3933 tx_start_bd->vlan_or_ethertype =
3934 cpu_to_le16(skb_vlan_tag_get(skb));
3935 tx_start_bd->bd_flags.as_bitfield |=
3936 (X_ETH_OUTBAND_VLAN << ETH_TX_BD_FLAGS_VLAN_MODE_SHIFT);
3938 /* when transmitting in a vf, start bd must hold the ethertype
3939 * for fw to enforce it
3941 #ifndef BNX2X_STOP_ON_ERROR
3944 tx_start_bd->vlan_or_ethertype =
3945 cpu_to_le16(ntohs(eth->h_proto));
3946 #ifndef BNX2X_STOP_ON_ERROR
3948 /* used by FW for packet accounting */
3949 tx_start_bd->vlan_or_ethertype = cpu_to_le16(pkt_prod);
3953 nbd = 2; /* start_bd + pbd + frags (updated when pages are mapped) */
3955 /* turn on parsing and get a BD */
3956 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
3958 if (xmit_type & XMIT_CSUM)
3959 bnx2x_set_sbd_csum(bp, skb, tx_start_bd, xmit_type);
3961 if (!CHIP_IS_E1x(bp)) {
3962 pbd_e2 = &txdata->tx_desc_ring[bd_prod].parse_bd_e2;
3963 memset(pbd_e2, 0, sizeof(struct eth_tx_parse_bd_e2));
3965 if (xmit_type & XMIT_CSUM_ENC) {
3966 u16 global_data = 0;
3968 /* Set PBD in enc checksum offload case */
3969 hlen = bnx2x_set_pbd_csum_enc(bp, skb,
3970 &pbd_e2_parsing_data,
3973 /* turn on 2nd parsing and get a BD */
3974 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
3976 pbd2 = &txdata->tx_desc_ring[bd_prod].parse_2nd_bd;
3978 memset(pbd2, 0, sizeof(*pbd2));
3980 pbd_e2->data.tunnel_data.ip_hdr_start_inner_w =
3981 (skb_inner_network_header(skb) -
3984 if (xmit_type & XMIT_GSO_ENC)
3985 bnx2x_update_pbds_gso_enc(skb, pbd_e2, pbd2,
3989 pbd2->global_data = cpu_to_le16(global_data);
3991 /* add addition parse BD indication to start BD */
3992 SET_FLAG(tx_start_bd->general_data,
3993 ETH_TX_START_BD_PARSE_NBDS, 1);
3994 /* set encapsulation flag in start BD */
3995 SET_FLAG(tx_start_bd->general_data,
3996 ETH_TX_START_BD_TUNNEL_EXIST, 1);
3998 tx_buf->flags |= BNX2X_HAS_SECOND_PBD;
4001 } else if (xmit_type & XMIT_CSUM) {
4002 /* Set PBD in checksum offload case w/o encapsulation */
4003 hlen = bnx2x_set_pbd_csum_e2(bp, skb,
4004 &pbd_e2_parsing_data,
4008 bnx2x_set_ipv6_ext_e2(skb, &pbd_e2_parsing_data, xmit_type);
4009 /* Add the macs to the parsing BD if this is a vf or if
4010 * Tx Switching is enabled.
4013 /* override GRE parameters in BD */
4014 bnx2x_set_fw_mac_addr(&pbd_e2->data.mac_addr.src_hi,
4015 &pbd_e2->data.mac_addr.src_mid,
4016 &pbd_e2->data.mac_addr.src_lo,
4019 bnx2x_set_fw_mac_addr(&pbd_e2->data.mac_addr.dst_hi,
4020 &pbd_e2->data.mac_addr.dst_mid,
4021 &pbd_e2->data.mac_addr.dst_lo,
4024 if (bp->flags & TX_SWITCHING)
4025 bnx2x_set_fw_mac_addr(
4026 &pbd_e2->data.mac_addr.dst_hi,
4027 &pbd_e2->data.mac_addr.dst_mid,
4028 &pbd_e2->data.mac_addr.dst_lo,
4030 #ifdef BNX2X_STOP_ON_ERROR
4031 /* Enforce security is always set in Stop on Error -
4032 * source mac should be present in the parsing BD
4034 bnx2x_set_fw_mac_addr(&pbd_e2->data.mac_addr.src_hi,
4035 &pbd_e2->data.mac_addr.src_mid,
4036 &pbd_e2->data.mac_addr.src_lo,
4041 SET_FLAG(pbd_e2_parsing_data,
4042 ETH_TX_PARSE_BD_E2_ETH_ADDR_TYPE, mac_type);
4044 u16 global_data = 0;
4045 pbd_e1x = &txdata->tx_desc_ring[bd_prod].parse_bd_e1x;
4046 memset(pbd_e1x, 0, sizeof(struct eth_tx_parse_bd_e1x));
4047 /* Set PBD in checksum offload case */
4048 if (xmit_type & XMIT_CSUM)
4049 hlen = bnx2x_set_pbd_csum(bp, skb, pbd_e1x, xmit_type);
4051 SET_FLAG(global_data,
4052 ETH_TX_PARSE_BD_E1X_ETH_ADDR_TYPE, mac_type);
4053 pbd_e1x->global_data |= cpu_to_le16(global_data);
4056 /* Setup the data pointer of the first BD of the packet */
4057 tx_start_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
4058 tx_start_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
4059 tx_start_bd->nbytes = cpu_to_le16(skb_headlen(skb));
4060 pkt_size = tx_start_bd->nbytes;
4062 DP(NETIF_MSG_TX_QUEUED,
4063 "first bd @%p addr (%x:%x) nbytes %d flags %x vlan %x\n",
4064 tx_start_bd, tx_start_bd->addr_hi, tx_start_bd->addr_lo,
4065 le16_to_cpu(tx_start_bd->nbytes),
4066 tx_start_bd->bd_flags.as_bitfield,
4067 le16_to_cpu(tx_start_bd->vlan_or_ethertype));
4069 if (xmit_type & XMIT_GSO) {
4071 DP(NETIF_MSG_TX_QUEUED,
4072 "TSO packet len %d hlen %d total len %d tso size %d\n",
4073 skb->len, hlen, skb_headlen(skb),
4074 skb_shinfo(skb)->gso_size);
4076 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_SW_LSO;
4078 if (unlikely(skb_headlen(skb) > hlen)) {
4080 bd_prod = bnx2x_tx_split(bp, txdata, tx_buf,
4084 if (!CHIP_IS_E1x(bp))
4085 pbd_e2_parsing_data |=
4086 (skb_shinfo(skb)->gso_size <<
4087 ETH_TX_PARSE_BD_E2_LSO_MSS_SHIFT) &
4088 ETH_TX_PARSE_BD_E2_LSO_MSS;
4090 bnx2x_set_pbd_gso(skb, pbd_e1x, xmit_type);
4093 /* Set the PBD's parsing_data field if not zero
4094 * (for the chips newer than 57711).
4096 if (pbd_e2_parsing_data)
4097 pbd_e2->parsing_data = cpu_to_le32(pbd_e2_parsing_data);
4099 tx_data_bd = (struct eth_tx_bd *)tx_start_bd;
4101 /* Handle fragmented skb */
4102 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
4103 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4105 mapping = skb_frag_dma_map(&bp->pdev->dev, frag, 0,
4106 skb_frag_size(frag), DMA_TO_DEVICE);
4107 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
4108 unsigned int pkts_compl = 0, bytes_compl = 0;
4110 DP(NETIF_MSG_TX_QUEUED,
4111 "Unable to map page - dropping packet...\n");
4113 /* we need unmap all buffers already mapped
4115 * first_bd->nbd need to be properly updated
4116 * before call to bnx2x_free_tx_pkt
4118 first_bd->nbd = cpu_to_le16(nbd);
4119 bnx2x_free_tx_pkt(bp, txdata,
4120 TX_BD(txdata->tx_pkt_prod),
4121 &pkts_compl, &bytes_compl);
4122 return NETDEV_TX_OK;
4125 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
4126 tx_data_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
4127 if (total_pkt_bd == NULL)
4128 total_pkt_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
4130 tx_data_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
4131 tx_data_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
4132 tx_data_bd->nbytes = cpu_to_le16(skb_frag_size(frag));
4133 le16_add_cpu(&pkt_size, skb_frag_size(frag));
4136 DP(NETIF_MSG_TX_QUEUED,
4137 "frag %d bd @%p addr (%x:%x) nbytes %d\n",
4138 i, tx_data_bd, tx_data_bd->addr_hi, tx_data_bd->addr_lo,
4139 le16_to_cpu(tx_data_bd->nbytes));
4142 DP(NETIF_MSG_TX_QUEUED, "last bd @%p\n", tx_data_bd);
4144 /* update with actual num BDs */
4145 first_bd->nbd = cpu_to_le16(nbd);
4147 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
4149 /* now send a tx doorbell, counting the next BD
4150 * if the packet contains or ends with it
4152 if (TX_BD_POFF(bd_prod) < nbd)
4155 /* total_pkt_bytes should be set on the first data BD if
4156 * it's not an LSO packet and there is more than one
4157 * data BD. In this case pkt_size is limited by an MTU value.
4158 * However we prefer to set it for an LSO packet (while we don't
4159 * have to) in order to save some CPU cycles in a none-LSO
4160 * case, when we much more care about them.
4162 if (total_pkt_bd != NULL)
4163 total_pkt_bd->total_pkt_bytes = pkt_size;
4166 DP(NETIF_MSG_TX_QUEUED,
4167 "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",
4168 pbd_e1x, pbd_e1x->global_data, pbd_e1x->ip_hlen_w,
4169 pbd_e1x->ip_id, pbd_e1x->lso_mss, pbd_e1x->tcp_flags,
4170 pbd_e1x->tcp_pseudo_csum, pbd_e1x->tcp_send_seq,
4171 le16_to_cpu(pbd_e1x->total_hlen_w));
4173 DP(NETIF_MSG_TX_QUEUED,
4174 "PBD (E2) @%p dst %x %x %x src %x %x %x parsing_data %x\n",
4176 pbd_e2->data.mac_addr.dst_hi,
4177 pbd_e2->data.mac_addr.dst_mid,
4178 pbd_e2->data.mac_addr.dst_lo,
4179 pbd_e2->data.mac_addr.src_hi,
4180 pbd_e2->data.mac_addr.src_mid,
4181 pbd_e2->data.mac_addr.src_lo,
4182 pbd_e2->parsing_data);
4183 DP(NETIF_MSG_TX_QUEUED, "doorbell: nbd %d bd %u\n", nbd, bd_prod);
4185 netdev_tx_sent_queue(txq, skb->len);
4187 skb_tx_timestamp(skb);
4189 txdata->tx_pkt_prod++;
4191 * Make sure that the BD data is updated before updating the producer
4192 * since FW might read the BD right after the producer is updated.
4193 * This is only applicable for weak-ordered memory model archs such
4194 * as IA-64. The following barrier is also mandatory since FW will
4195 * assumes packets must have BDs.
4199 txdata->tx_db.data.prod += nbd;
4202 DOORBELL(bp, txdata->cid, txdata->tx_db.raw);
4206 txdata->tx_bd_prod += nbd;
4208 if (unlikely(bnx2x_tx_avail(bp, txdata) < MAX_DESC_PER_TX_PKT)) {
4209 netif_tx_stop_queue(txq);
4211 /* paired memory barrier is in bnx2x_tx_int(), we have to keep
4212 * ordering of set_bit() in netif_tx_stop_queue() and read of
4216 bnx2x_fp_qstats(bp, txdata->parent_fp)->driver_xoff++;
4217 if (bnx2x_tx_avail(bp, txdata) >= MAX_DESC_PER_TX_PKT)
4218 netif_tx_wake_queue(txq);
4222 return NETDEV_TX_OK;
4225 void bnx2x_get_c2s_mapping(struct bnx2x *bp, u8 *c2s_map, u8 *c2s_default)
4227 int mfw_vn = BP_FW_MB_IDX(bp);
4230 /* If the shmem shouldn't affect configuration, reflect */
4231 if (!IS_MF_BD(bp)) {
4234 for (i = 0; i < BNX2X_MAX_PRIORITY; i++)
4241 tmp = SHMEM2_RD(bp, c2s_pcp_map_lower[mfw_vn]);
4242 tmp = (__force u32)be32_to_cpu((__force __be32)tmp);
4243 c2s_map[0] = tmp & 0xff;
4244 c2s_map[1] = (tmp >> 8) & 0xff;
4245 c2s_map[2] = (tmp >> 16) & 0xff;
4246 c2s_map[3] = (tmp >> 24) & 0xff;
4248 tmp = SHMEM2_RD(bp, c2s_pcp_map_upper[mfw_vn]);
4249 tmp = (__force u32)be32_to_cpu((__force __be32)tmp);
4250 c2s_map[4] = tmp & 0xff;
4251 c2s_map[5] = (tmp >> 8) & 0xff;
4252 c2s_map[6] = (tmp >> 16) & 0xff;
4253 c2s_map[7] = (tmp >> 24) & 0xff;
4255 tmp = SHMEM2_RD(bp, c2s_pcp_map_default[mfw_vn]);
4256 tmp = (__force u32)be32_to_cpu((__force __be32)tmp);
4257 *c2s_default = (tmp >> (8 * mfw_vn)) & 0xff;
4261 * bnx2x_setup_tc - routine to configure net_device for multi tc
4263 * @netdev: net device to configure
4264 * @tc: number of traffic classes to enable
4266 * callback connected to the ndo_setup_tc function pointer
4268 int bnx2x_setup_tc(struct net_device *dev, u8 num_tc)
4270 struct bnx2x *bp = netdev_priv(dev);
4271 u8 c2s_map[BNX2X_MAX_PRIORITY], c2s_def;
4272 int cos, prio, count, offset;
4274 /* setup tc must be called under rtnl lock */
4277 /* no traffic classes requested. Aborting */
4279 netdev_reset_tc(dev);
4283 /* requested to support too many traffic classes */
4284 if (num_tc > bp->max_cos) {
4285 BNX2X_ERR("support for too many traffic classes requested: %d. Max supported is %d\n",
4286 num_tc, bp->max_cos);
4290 /* declare amount of supported traffic classes */
4291 if (netdev_set_num_tc(dev, num_tc)) {
4292 BNX2X_ERR("failed to declare %d traffic classes\n", num_tc);
4296 bnx2x_get_c2s_mapping(bp, c2s_map, &c2s_def);
4298 /* configure priority to traffic class mapping */
4299 for (prio = 0; prio < BNX2X_MAX_PRIORITY; prio++) {
4300 int outer_prio = c2s_map[prio];
4302 netdev_set_prio_tc_map(dev, prio, bp->prio_to_cos[outer_prio]);
4303 DP(BNX2X_MSG_SP | NETIF_MSG_IFUP,
4304 "mapping priority %d to tc %d\n",
4305 outer_prio, bp->prio_to_cos[outer_prio]);
4308 /* Use this configuration to differentiate tc0 from other COSes
4309 This can be used for ets or pfc, and save the effort of setting
4310 up a multio class queue disc or negotiating DCBX with a switch
4311 netdev_set_prio_tc_map(dev, 0, 0);
4312 DP(BNX2X_MSG_SP, "mapping priority %d to tc %d\n", 0, 0);
4313 for (prio = 1; prio < 16; prio++) {
4314 netdev_set_prio_tc_map(dev, prio, 1);
4315 DP(BNX2X_MSG_SP, "mapping priority %d to tc %d\n", prio, 1);
4318 /* configure traffic class to transmission queue mapping */
4319 for (cos = 0; cos < bp->max_cos; cos++) {
4320 count = BNX2X_NUM_ETH_QUEUES(bp);
4321 offset = cos * BNX2X_NUM_NON_CNIC_QUEUES(bp);
4322 netdev_set_tc_queue(dev, cos, count, offset);
4323 DP(BNX2X_MSG_SP | NETIF_MSG_IFUP,
4324 "mapping tc %d to offset %d count %d\n",
4325 cos, offset, count);
4331 /* called with rtnl_lock */
4332 int bnx2x_change_mac_addr(struct net_device *dev, void *p)
4334 struct sockaddr *addr = p;
4335 struct bnx2x *bp = netdev_priv(dev);
4338 if (!is_valid_ether_addr(addr->sa_data)) {
4339 BNX2X_ERR("Requested MAC address is not valid\n");
4343 if (IS_MF_STORAGE_ONLY(bp)) {
4344 BNX2X_ERR("Can't change address on STORAGE ONLY function\n");
4348 if (netif_running(dev)) {
4349 rc = bnx2x_set_eth_mac(bp, false);
4354 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
4356 if (netif_running(dev))
4357 rc = bnx2x_set_eth_mac(bp, true);
4359 if (IS_PF(bp) && SHMEM2_HAS(bp, curr_cfg))
4360 SHMEM2_WR(bp, curr_cfg, CURR_CFG_MET_OS);
4365 static void bnx2x_free_fp_mem_at(struct bnx2x *bp, int fp_index)
4367 union host_hc_status_block *sb = &bnx2x_fp(bp, fp_index, status_blk);
4368 struct bnx2x_fastpath *fp = &bp->fp[fp_index];
4373 if (IS_FCOE_IDX(fp_index)) {
4374 memset(sb, 0, sizeof(union host_hc_status_block));
4375 fp->status_blk_mapping = 0;
4378 if (!CHIP_IS_E1x(bp))
4379 BNX2X_PCI_FREE(sb->e2_sb,
4380 bnx2x_fp(bp, fp_index,
4381 status_blk_mapping),
4382 sizeof(struct host_hc_status_block_e2));
4384 BNX2X_PCI_FREE(sb->e1x_sb,
4385 bnx2x_fp(bp, fp_index,
4386 status_blk_mapping),
4387 sizeof(struct host_hc_status_block_e1x));
4391 if (!skip_rx_queue(bp, fp_index)) {
4392 bnx2x_free_rx_bds(fp);
4394 /* fastpath rx rings: rx_buf rx_desc rx_comp */
4395 BNX2X_FREE(bnx2x_fp(bp, fp_index, rx_buf_ring));
4396 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_desc_ring),
4397 bnx2x_fp(bp, fp_index, rx_desc_mapping),
4398 sizeof(struct eth_rx_bd) * NUM_RX_BD);
4400 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_comp_ring),
4401 bnx2x_fp(bp, fp_index, rx_comp_mapping),
4402 sizeof(struct eth_fast_path_rx_cqe) *
4406 BNX2X_FREE(bnx2x_fp(bp, fp_index, rx_page_ring));
4407 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_sge_ring),
4408 bnx2x_fp(bp, fp_index, rx_sge_mapping),
4409 BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
4413 if (!skip_tx_queue(bp, fp_index)) {
4414 /* fastpath tx rings: tx_buf tx_desc */
4415 for_each_cos_in_tx_queue(fp, cos) {
4416 struct bnx2x_fp_txdata *txdata = fp->txdata_ptr[cos];
4418 DP(NETIF_MSG_IFDOWN,
4419 "freeing tx memory of fp %d cos %d cid %d\n",
4420 fp_index, cos, txdata->cid);
4422 BNX2X_FREE(txdata->tx_buf_ring);
4423 BNX2X_PCI_FREE(txdata->tx_desc_ring,
4424 txdata->tx_desc_mapping,
4425 sizeof(union eth_tx_bd_types) * NUM_TX_BD);
4428 /* end of fastpath */
4431 static void bnx2x_free_fp_mem_cnic(struct bnx2x *bp)
4434 for_each_cnic_queue(bp, i)
4435 bnx2x_free_fp_mem_at(bp, i);
4438 void bnx2x_free_fp_mem(struct bnx2x *bp)
4441 for_each_eth_queue(bp, i)
4442 bnx2x_free_fp_mem_at(bp, i);
4445 static void set_sb_shortcuts(struct bnx2x *bp, int index)
4447 union host_hc_status_block status_blk = bnx2x_fp(bp, index, status_blk);
4448 if (!CHIP_IS_E1x(bp)) {
4449 bnx2x_fp(bp, index, sb_index_values) =
4450 (__le16 *)status_blk.e2_sb->sb.index_values;
4451 bnx2x_fp(bp, index, sb_running_index) =
4452 (__le16 *)status_blk.e2_sb->sb.running_index;
4454 bnx2x_fp(bp, index, sb_index_values) =
4455 (__le16 *)status_blk.e1x_sb->sb.index_values;
4456 bnx2x_fp(bp, index, sb_running_index) =
4457 (__le16 *)status_blk.e1x_sb->sb.running_index;
4461 /* Returns the number of actually allocated BDs */
4462 static int bnx2x_alloc_rx_bds(struct bnx2x_fastpath *fp,
4465 struct bnx2x *bp = fp->bp;
4466 u16 ring_prod, cqe_ring_prod;
4467 int i, failure_cnt = 0;
4469 fp->rx_comp_cons = 0;
4470 cqe_ring_prod = ring_prod = 0;
4472 /* This routine is called only during fo init so
4473 * fp->eth_q_stats.rx_skb_alloc_failed = 0
4475 for (i = 0; i < rx_ring_size; i++) {
4476 if (bnx2x_alloc_rx_data(bp, fp, ring_prod, GFP_KERNEL) < 0) {
4480 ring_prod = NEXT_RX_IDX(ring_prod);
4481 cqe_ring_prod = NEXT_RCQ_IDX(cqe_ring_prod);
4482 WARN_ON(ring_prod <= (i - failure_cnt));
4486 BNX2X_ERR("was only able to allocate %d rx skbs on queue[%d]\n",
4487 i - failure_cnt, fp->index);
4489 fp->rx_bd_prod = ring_prod;
4490 /* Limit the CQE producer by the CQE ring size */
4491 fp->rx_comp_prod = min_t(u16, NUM_RCQ_RINGS*RCQ_DESC_CNT,
4493 fp->rx_pkt = fp->rx_calls = 0;
4495 bnx2x_fp_stats(bp, fp)->eth_q_stats.rx_skb_alloc_failed += failure_cnt;
4497 return i - failure_cnt;
4500 static void bnx2x_set_next_page_rx_cq(struct bnx2x_fastpath *fp)
4504 for (i = 1; i <= NUM_RCQ_RINGS; i++) {
4505 struct eth_rx_cqe_next_page *nextpg;
4507 nextpg = (struct eth_rx_cqe_next_page *)
4508 &fp->rx_comp_ring[RCQ_DESC_CNT * i - 1];
4510 cpu_to_le32(U64_HI(fp->rx_comp_mapping +
4511 BCM_PAGE_SIZE*(i % NUM_RCQ_RINGS)));
4513 cpu_to_le32(U64_LO(fp->rx_comp_mapping +
4514 BCM_PAGE_SIZE*(i % NUM_RCQ_RINGS)));
4518 static int bnx2x_alloc_fp_mem_at(struct bnx2x *bp, int index)
4520 union host_hc_status_block *sb;
4521 struct bnx2x_fastpath *fp = &bp->fp[index];
4524 int rx_ring_size = 0;
4526 if (!bp->rx_ring_size && IS_MF_STORAGE_ONLY(bp)) {
4527 rx_ring_size = MIN_RX_SIZE_NONTPA;
4528 bp->rx_ring_size = rx_ring_size;
4529 } else if (!bp->rx_ring_size) {
4530 rx_ring_size = MAX_RX_AVAIL/BNX2X_NUM_RX_QUEUES(bp);
4532 if (CHIP_IS_E3(bp)) {
4533 u32 cfg = SHMEM_RD(bp,
4534 dev_info.port_hw_config[BP_PORT(bp)].
4537 /* Decrease ring size for 1G functions */
4538 if ((cfg & PORT_HW_CFG_NET_SERDES_IF_MASK) ==
4539 PORT_HW_CFG_NET_SERDES_IF_SGMII)
4543 /* allocate at least number of buffers required by FW */
4544 rx_ring_size = max_t(int, bp->disable_tpa ? MIN_RX_SIZE_NONTPA :
4545 MIN_RX_SIZE_TPA, rx_ring_size);
4547 bp->rx_ring_size = rx_ring_size;
4548 } else /* if rx_ring_size specified - use it */
4549 rx_ring_size = bp->rx_ring_size;
4551 DP(BNX2X_MSG_SP, "calculated rx_ring_size %d\n", rx_ring_size);
4554 sb = &bnx2x_fp(bp, index, status_blk);
4556 if (!IS_FCOE_IDX(index)) {
4558 if (!CHIP_IS_E1x(bp)) {
4559 sb->e2_sb = BNX2X_PCI_ALLOC(&bnx2x_fp(bp, index, status_blk_mapping),
4560 sizeof(struct host_hc_status_block_e2));
4564 sb->e1x_sb = BNX2X_PCI_ALLOC(&bnx2x_fp(bp, index, status_blk_mapping),
4565 sizeof(struct host_hc_status_block_e1x));
4571 /* FCoE Queue uses Default SB and doesn't ACK the SB, thus no need to
4572 * set shortcuts for it.
4574 if (!IS_FCOE_IDX(index))
4575 set_sb_shortcuts(bp, index);
4578 if (!skip_tx_queue(bp, index)) {
4579 /* fastpath tx rings: tx_buf tx_desc */
4580 for_each_cos_in_tx_queue(fp, cos) {
4581 struct bnx2x_fp_txdata *txdata = fp->txdata_ptr[cos];
4584 "allocating tx memory of fp %d cos %d\n",
4587 txdata->tx_buf_ring = kcalloc(NUM_TX_BD,
4588 sizeof(struct sw_tx_bd),
4590 if (!txdata->tx_buf_ring)
4592 txdata->tx_desc_ring = BNX2X_PCI_ALLOC(&txdata->tx_desc_mapping,
4593 sizeof(union eth_tx_bd_types) * NUM_TX_BD);
4594 if (!txdata->tx_desc_ring)
4600 if (!skip_rx_queue(bp, index)) {
4601 /* fastpath rx rings: rx_buf rx_desc rx_comp */
4602 bnx2x_fp(bp, index, rx_buf_ring) =
4603 kcalloc(NUM_RX_BD, sizeof(struct sw_rx_bd), GFP_KERNEL);
4604 if (!bnx2x_fp(bp, index, rx_buf_ring))
4606 bnx2x_fp(bp, index, rx_desc_ring) =
4607 BNX2X_PCI_ALLOC(&bnx2x_fp(bp, index, rx_desc_mapping),
4608 sizeof(struct eth_rx_bd) * NUM_RX_BD);
4609 if (!bnx2x_fp(bp, index, rx_desc_ring))
4612 /* Seed all CQEs by 1s */
4613 bnx2x_fp(bp, index, rx_comp_ring) =
4614 BNX2X_PCI_FALLOC(&bnx2x_fp(bp, index, rx_comp_mapping),
4615 sizeof(struct eth_fast_path_rx_cqe) * NUM_RCQ_BD);
4616 if (!bnx2x_fp(bp, index, rx_comp_ring))
4620 bnx2x_fp(bp, index, rx_page_ring) =
4621 kcalloc(NUM_RX_SGE, sizeof(struct sw_rx_page),
4623 if (!bnx2x_fp(bp, index, rx_page_ring))
4625 bnx2x_fp(bp, index, rx_sge_ring) =
4626 BNX2X_PCI_ALLOC(&bnx2x_fp(bp, index, rx_sge_mapping),
4627 BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
4628 if (!bnx2x_fp(bp, index, rx_sge_ring))
4631 bnx2x_set_next_page_rx_bd(fp);
4634 bnx2x_set_next_page_rx_cq(fp);
4637 ring_size = bnx2x_alloc_rx_bds(fp, rx_ring_size);
4638 if (ring_size < rx_ring_size)
4644 /* handles low memory cases */
4646 BNX2X_ERR("Unable to allocate full memory for queue %d (size %d)\n",
4648 /* FW will drop all packets if queue is not big enough,
4649 * In these cases we disable the queue
4650 * Min size is different for OOO, TPA and non-TPA queues
4652 if (ring_size < (fp->mode == TPA_MODE_DISABLED ?
4653 MIN_RX_SIZE_NONTPA : MIN_RX_SIZE_TPA)) {
4654 /* release memory allocated for this queue */
4655 bnx2x_free_fp_mem_at(bp, index);
4661 static int bnx2x_alloc_fp_mem_cnic(struct bnx2x *bp)
4665 if (bnx2x_alloc_fp_mem_at(bp, FCOE_IDX(bp)))
4666 /* we will fail load process instead of mark
4674 static int bnx2x_alloc_fp_mem(struct bnx2x *bp)
4678 /* 1. Allocate FP for leading - fatal if error
4679 * 2. Allocate RSS - fix number of queues if error
4683 if (bnx2x_alloc_fp_mem_at(bp, 0))
4687 for_each_nondefault_eth_queue(bp, i)
4688 if (bnx2x_alloc_fp_mem_at(bp, i))
4691 /* handle memory failures */
4692 if (i != BNX2X_NUM_ETH_QUEUES(bp)) {
4693 int delta = BNX2X_NUM_ETH_QUEUES(bp) - i;
4696 bnx2x_shrink_eth_fp(bp, delta);
4697 if (CNIC_SUPPORT(bp))
4698 /* move non eth FPs next to last eth FP
4699 * must be done in that order
4700 * FCOE_IDX < FWD_IDX < OOO_IDX
4703 /* move FCoE fp even NO_FCOE_FLAG is on */
4704 bnx2x_move_fp(bp, FCOE_IDX(bp), FCOE_IDX(bp) - delta);
4705 bp->num_ethernet_queues -= delta;
4706 bp->num_queues = bp->num_ethernet_queues +
4707 bp->num_cnic_queues;
4708 BNX2X_ERR("Adjusted num of queues from %d to %d\n",
4709 bp->num_queues + delta, bp->num_queues);
4715 void bnx2x_free_mem_bp(struct bnx2x *bp)
4719 for (i = 0; i < bp->fp_array_size; i++)
4720 kfree(bp->fp[i].tpa_info);
4723 kfree(bp->fp_stats);
4724 kfree(bp->bnx2x_txq);
4725 kfree(bp->msix_table);
4729 int bnx2x_alloc_mem_bp(struct bnx2x *bp)
4731 struct bnx2x_fastpath *fp;
4732 struct msix_entry *tbl;
4733 struct bnx2x_ilt *ilt;
4734 int msix_table_size = 0;
4735 int fp_array_size, txq_array_size;
4739 * The biggest MSI-X table we might need is as a maximum number of fast
4740 * path IGU SBs plus default SB (for PF only).
4742 msix_table_size = bp->igu_sb_cnt;
4745 BNX2X_DEV_INFO("msix_table_size %d\n", msix_table_size);
4747 /* fp array: RSS plus CNIC related L2 queues */
4748 fp_array_size = BNX2X_MAX_RSS_COUNT(bp) + CNIC_SUPPORT(bp);
4749 bp->fp_array_size = fp_array_size;
4750 BNX2X_DEV_INFO("fp_array_size %d\n", bp->fp_array_size);
4752 fp = kcalloc(bp->fp_array_size, sizeof(*fp), GFP_KERNEL);
4755 for (i = 0; i < bp->fp_array_size; i++) {
4757 kcalloc(ETH_MAX_AGGREGATION_QUEUES_E1H_E2,
4758 sizeof(struct bnx2x_agg_info), GFP_KERNEL);
4759 if (!(fp[i].tpa_info))
4765 /* allocate sp objs */
4766 bp->sp_objs = kcalloc(bp->fp_array_size, sizeof(struct bnx2x_sp_objs),
4771 /* allocate fp_stats */
4772 bp->fp_stats = kcalloc(bp->fp_array_size, sizeof(struct bnx2x_fp_stats),
4777 /* Allocate memory for the transmission queues array */
4779 BNX2X_MAX_RSS_COUNT(bp) * BNX2X_MULTI_TX_COS + CNIC_SUPPORT(bp);
4780 BNX2X_DEV_INFO("txq_array_size %d", txq_array_size);
4782 bp->bnx2x_txq = kcalloc(txq_array_size, sizeof(struct bnx2x_fp_txdata),
4788 tbl = kcalloc(msix_table_size, sizeof(*tbl), GFP_KERNEL);
4791 bp->msix_table = tbl;
4794 ilt = kzalloc(sizeof(*ilt), GFP_KERNEL);
4801 bnx2x_free_mem_bp(bp);
4805 int bnx2x_reload_if_running(struct net_device *dev)
4807 struct bnx2x *bp = netdev_priv(dev);
4809 if (unlikely(!netif_running(dev)))
4812 bnx2x_nic_unload(bp, UNLOAD_NORMAL, true);
4813 return bnx2x_nic_load(bp, LOAD_NORMAL);
4816 int bnx2x_get_cur_phy_idx(struct bnx2x *bp)
4818 u32 sel_phy_idx = 0;
4819 if (bp->link_params.num_phys <= 1)
4822 if (bp->link_vars.link_up) {
4823 sel_phy_idx = EXT_PHY1;
4824 /* In case link is SERDES, check if the EXT_PHY2 is the one */
4825 if ((bp->link_vars.link_status & LINK_STATUS_SERDES_LINK) &&
4826 (bp->link_params.phy[EXT_PHY2].supported & SUPPORTED_FIBRE))
4827 sel_phy_idx = EXT_PHY2;
4830 switch (bnx2x_phy_selection(&bp->link_params)) {
4831 case PORT_HW_CFG_PHY_SELECTION_HARDWARE_DEFAULT:
4832 case PORT_HW_CFG_PHY_SELECTION_FIRST_PHY:
4833 case PORT_HW_CFG_PHY_SELECTION_FIRST_PHY_PRIORITY:
4834 sel_phy_idx = EXT_PHY1;
4836 case PORT_HW_CFG_PHY_SELECTION_SECOND_PHY:
4837 case PORT_HW_CFG_PHY_SELECTION_SECOND_PHY_PRIORITY:
4838 sel_phy_idx = EXT_PHY2;
4845 int bnx2x_get_link_cfg_idx(struct bnx2x *bp)
4847 u32 sel_phy_idx = bnx2x_get_cur_phy_idx(bp);
4849 * The selected activated PHY is always after swapping (in case PHY
4850 * swapping is enabled). So when swapping is enabled, we need to reverse
4854 if (bp->link_params.multi_phy_config &
4855 PORT_HW_CFG_PHY_SWAPPED_ENABLED) {
4856 if (sel_phy_idx == EXT_PHY1)
4857 sel_phy_idx = EXT_PHY2;
4858 else if (sel_phy_idx == EXT_PHY2)
4859 sel_phy_idx = EXT_PHY1;
4861 return LINK_CONFIG_IDX(sel_phy_idx);
4864 #ifdef NETDEV_FCOE_WWNN
4865 int bnx2x_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type)
4867 struct bnx2x *bp = netdev_priv(dev);
4868 struct cnic_eth_dev *cp = &bp->cnic_eth_dev;
4871 case NETDEV_FCOE_WWNN:
4872 *wwn = HILO_U64(cp->fcoe_wwn_node_name_hi,
4873 cp->fcoe_wwn_node_name_lo);
4875 case NETDEV_FCOE_WWPN:
4876 *wwn = HILO_U64(cp->fcoe_wwn_port_name_hi,
4877 cp->fcoe_wwn_port_name_lo);
4880 BNX2X_ERR("Wrong WWN type requested - %d\n", type);
4888 /* called with rtnl_lock */
4889 int bnx2x_change_mtu(struct net_device *dev, int new_mtu)
4891 struct bnx2x *bp = netdev_priv(dev);
4893 if (pci_num_vf(bp->pdev)) {
4894 DP(BNX2X_MSG_IOV, "VFs are enabled, can not change MTU\n");
4898 if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
4899 BNX2X_ERR("Can't perform change MTU during parity recovery\n");
4903 if ((new_mtu > ETH_MAX_JUMBO_PACKET_SIZE) ||
4904 ((new_mtu + ETH_HLEN) < ETH_MIN_PACKET_SIZE)) {
4905 BNX2X_ERR("Can't support requested MTU size\n");
4909 /* This does not race with packet allocation
4910 * because the actual alloc size is
4911 * only updated as part of load
4915 if (IS_PF(bp) && SHMEM2_HAS(bp, curr_cfg))
4916 SHMEM2_WR(bp, curr_cfg, CURR_CFG_MET_OS);
4918 return bnx2x_reload_if_running(dev);
4921 netdev_features_t bnx2x_fix_features(struct net_device *dev,
4922 netdev_features_t features)
4924 struct bnx2x *bp = netdev_priv(dev);
4926 if (pci_num_vf(bp->pdev)) {
4927 netdev_features_t changed = dev->features ^ features;
4929 /* Revert the requested changes in features if they
4930 * would require internal reload of PF in bnx2x_set_features().
4932 if (!(features & NETIF_F_RXCSUM) && !bp->disable_tpa) {
4933 features &= ~NETIF_F_RXCSUM;
4934 features |= dev->features & NETIF_F_RXCSUM;
4937 if (changed & NETIF_F_LOOPBACK) {
4938 features &= ~NETIF_F_LOOPBACK;
4939 features |= dev->features & NETIF_F_LOOPBACK;
4943 /* TPA requires Rx CSUM offloading */
4944 if (!(features & NETIF_F_RXCSUM)) {
4945 features &= ~NETIF_F_LRO;
4946 features &= ~NETIF_F_GRO;
4952 int bnx2x_set_features(struct net_device *dev, netdev_features_t features)
4954 struct bnx2x *bp = netdev_priv(dev);
4955 netdev_features_t changes = features ^ dev->features;
4956 bool bnx2x_reload = false;
4959 /* VFs or non SRIOV PFs should be able to change loopback feature */
4960 if (!pci_num_vf(bp->pdev)) {
4961 if (features & NETIF_F_LOOPBACK) {
4962 if (bp->link_params.loopback_mode != LOOPBACK_BMAC) {
4963 bp->link_params.loopback_mode = LOOPBACK_BMAC;
4964 bnx2x_reload = true;
4967 if (bp->link_params.loopback_mode != LOOPBACK_NONE) {
4968 bp->link_params.loopback_mode = LOOPBACK_NONE;
4969 bnx2x_reload = true;
4974 /* if GRO is changed while LRO is enabled, don't force a reload */
4975 if ((changes & NETIF_F_GRO) && (features & NETIF_F_LRO))
4976 changes &= ~NETIF_F_GRO;
4978 /* if GRO is changed while HW TPA is off, don't force a reload */
4979 if ((changes & NETIF_F_GRO) && bp->disable_tpa)
4980 changes &= ~NETIF_F_GRO;
4983 bnx2x_reload = true;
4986 if (bp->recovery_state == BNX2X_RECOVERY_DONE) {
4987 dev->features = features;
4988 rc = bnx2x_reload_if_running(dev);
4991 /* else: bnx2x_nic_load() will be called at end of recovery */
4997 void bnx2x_tx_timeout(struct net_device *dev)
4999 struct bnx2x *bp = netdev_priv(dev);
5001 #ifdef BNX2X_STOP_ON_ERROR
5006 /* This allows the netif to be shutdown gracefully before resetting */
5007 bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_TX_TIMEOUT, 0);
5010 int bnx2x_suspend(struct pci_dev *pdev, pm_message_t state)
5012 struct net_device *dev = pci_get_drvdata(pdev);
5016 dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n");
5019 bp = netdev_priv(dev);
5023 pci_save_state(pdev);
5025 if (!netif_running(dev)) {
5030 netif_device_detach(dev);
5032 bnx2x_nic_unload(bp, UNLOAD_CLOSE, false);
5034 bnx2x_set_power_state(bp, pci_choose_state(pdev, state));
5041 int bnx2x_resume(struct pci_dev *pdev)
5043 struct net_device *dev = pci_get_drvdata(pdev);
5048 dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n");
5051 bp = netdev_priv(dev);
5053 if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
5054 BNX2X_ERR("Handling parity error recovery. Try again later\n");
5060 pci_restore_state(pdev);
5062 if (!netif_running(dev)) {
5067 bnx2x_set_power_state(bp, PCI_D0);
5068 netif_device_attach(dev);
5070 rc = bnx2x_nic_load(bp, LOAD_OPEN);
5077 void bnx2x_set_ctx_validation(struct bnx2x *bp, struct eth_context *cxt,
5081 BNX2X_ERR("bad context pointer %p\n", cxt);
5085 /* ustorm cxt validation */
5086 cxt->ustorm_ag_context.cdu_usage =
5087 CDU_RSRVD_VALUE_TYPE_A(HW_CID(bp, cid),
5088 CDU_REGION_NUMBER_UCM_AG, ETH_CONNECTION_TYPE);
5089 /* xcontext validation */
5090 cxt->xstorm_ag_context.cdu_reserved =
5091 CDU_RSRVD_VALUE_TYPE_A(HW_CID(bp, cid),
5092 CDU_REGION_NUMBER_XCM_AG, ETH_CONNECTION_TYPE);
5095 static void storm_memset_hc_timeout(struct bnx2x *bp, u8 port,
5096 u8 fw_sb_id, u8 sb_index,
5099 u32 addr = BAR_CSTRORM_INTMEM +
5100 CSTORM_STATUS_BLOCK_DATA_TIMEOUT_OFFSET(fw_sb_id, sb_index);
5101 REG_WR8(bp, addr, ticks);
5103 "port %x fw_sb_id %d sb_index %d ticks %d\n",
5104 port, fw_sb_id, sb_index, ticks);
5107 static void storm_memset_hc_disable(struct bnx2x *bp, u8 port,
5108 u16 fw_sb_id, u8 sb_index,
5111 u32 enable_flag = disable ? 0 : (1 << HC_INDEX_DATA_HC_ENABLED_SHIFT);
5112 u32 addr = BAR_CSTRORM_INTMEM +
5113 CSTORM_STATUS_BLOCK_DATA_FLAGS_OFFSET(fw_sb_id, sb_index);
5114 u8 flags = REG_RD8(bp, addr);
5116 flags &= ~HC_INDEX_DATA_HC_ENABLED;
5117 flags |= enable_flag;
5118 REG_WR8(bp, addr, flags);
5120 "port %x fw_sb_id %d sb_index %d disable %d\n",
5121 port, fw_sb_id, sb_index, disable);
5124 void bnx2x_update_coalesce_sb_index(struct bnx2x *bp, u8 fw_sb_id,
5125 u8 sb_index, u8 disable, u16 usec)
5127 int port = BP_PORT(bp);
5128 u8 ticks = usec / BNX2X_BTR;
5130 storm_memset_hc_timeout(bp, port, fw_sb_id, sb_index, ticks);
5132 disable = disable ? 1 : (usec ? 0 : 1);
5133 storm_memset_hc_disable(bp, port, fw_sb_id, sb_index, disable);
5136 void bnx2x_schedule_sp_rtnl(struct bnx2x *bp, enum sp_rtnl_flag flag,
5139 smp_mb__before_atomic();
5140 set_bit(flag, &bp->sp_rtnl_state);
5141 smp_mb__after_atomic();
5142 DP((BNX2X_MSG_SP | verbose), "Scheduling sp_rtnl task [Flag: %d]\n",
5144 schedule_delayed_work(&bp->sp_rtnl_task, 0);
5146 EXPORT_SYMBOL(bnx2x_schedule_sp_rtnl);