2 * Copyright (c) 2015-2016, Mellanox Technologies. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #include <linux/tcp.h>
34 #include <linux/if_vlan.h>
35 #include <net/dsfield.h>
37 #include "ipoib/ipoib.h"
38 #include "en_accel/en_accel.h"
39 #include "lib/clock.h"
41 #define MLX5E_SQ_NOPS_ROOM MLX5_SEND_WQE_MAX_WQEBBS
43 #ifndef CONFIG_MLX5_EN_TLS
44 #define MLX5E_SQ_STOP_ROOM (MLX5_SEND_WQE_MAX_WQEBBS +\
47 /* TLS offload requires MLX5E_SQ_STOP_ROOM to have
48 * enough room for a resync SKB, a normal SKB and a NOP
50 #define MLX5E_SQ_STOP_ROOM (2 * MLX5_SEND_WQE_MAX_WQEBBS +\
54 static inline void mlx5e_tx_dma_unmap(struct device *pdev,
55 struct mlx5e_sq_dma *dma)
58 case MLX5E_DMA_MAP_SINGLE:
59 dma_unmap_single(pdev, dma->addr, dma->size, DMA_TO_DEVICE);
61 case MLX5E_DMA_MAP_PAGE:
62 dma_unmap_page(pdev, dma->addr, dma->size, DMA_TO_DEVICE);
65 WARN_ONCE(true, "mlx5e_tx_dma_unmap unknown DMA type!\n");
69 static inline struct mlx5e_sq_dma *mlx5e_dma_get(struct mlx5e_txqsq *sq, u32 i)
71 return &sq->db.dma_fifo[i & sq->dma_fifo_mask];
74 static inline void mlx5e_dma_push(struct mlx5e_txqsq *sq,
77 enum mlx5e_dma_map_type map_type)
79 struct mlx5e_sq_dma *dma = mlx5e_dma_get(sq, sq->dma_fifo_pc++);
86 static void mlx5e_dma_unmap_wqe_err(struct mlx5e_txqsq *sq, u8 num_dma)
90 for (i = 0; i < num_dma; i++) {
91 struct mlx5e_sq_dma *last_pushed_dma =
92 mlx5e_dma_get(sq, --sq->dma_fifo_pc);
94 mlx5e_tx_dma_unmap(sq->pdev, last_pushed_dma);
98 #ifdef CONFIG_MLX5_CORE_EN_DCB
99 static inline int mlx5e_get_dscp_up(struct mlx5e_priv *priv, struct sk_buff *skb)
103 if (skb->protocol == htons(ETH_P_IP))
104 dscp_cp = ipv4_get_dsfield(ip_hdr(skb)) >> 2;
105 else if (skb->protocol == htons(ETH_P_IPV6))
106 dscp_cp = ipv6_get_dsfield(ipv6_hdr(skb)) >> 2;
108 return priv->dcbx_dp.dscp2prio[dscp_cp];
112 u16 mlx5e_select_queue(struct net_device *dev, struct sk_buff *skb,
113 struct net_device *sb_dev,
114 select_queue_fallback_t fallback)
116 struct mlx5e_priv *priv = netdev_priv(dev);
117 int channel_ix = fallback(dev, skb, NULL);
121 if (!netdev_get_num_tc(dev))
124 #ifdef CONFIG_MLX5_CORE_EN_DCB
125 if (priv->dcbx_dp.trust_state == MLX5_QPTS_TRUST_DSCP)
126 up = mlx5e_get_dscp_up(priv, skb);
129 if (skb_vlan_tag_present(skb))
130 up = skb_vlan_tag_get_prio(skb);
132 /* channel_ix can be larger than num_channels since
133 * dev->num_real_tx_queues = num_channels * num_tc
135 num_channels = priv->channels.params.num_channels;
136 if (channel_ix >= num_channels)
137 channel_ix = reciprocal_scale(channel_ix, num_channels);
139 return priv->channel_tc2txq[channel_ix][up];
142 static inline int mlx5e_skb_l2_header_offset(struct sk_buff *skb)
144 #define MLX5E_MIN_INLINE (ETH_HLEN + VLAN_HLEN)
146 return max(skb_network_offset(skb), MLX5E_MIN_INLINE);
149 static inline int mlx5e_skb_l3_header_offset(struct sk_buff *skb)
151 if (skb_transport_header_was_set(skb))
152 return skb_transport_offset(skb);
154 return mlx5e_skb_l2_header_offset(skb);
157 static inline u16 mlx5e_calc_min_inline(enum mlx5_inline_modes mode,
163 case MLX5_INLINE_MODE_NONE:
165 case MLX5_INLINE_MODE_TCP_UDP:
166 hlen = eth_get_headlen(skb->data, skb_headlen(skb));
167 if (hlen == ETH_HLEN && !skb_vlan_tag_present(skb))
170 case MLX5_INLINE_MODE_IP:
171 hlen = mlx5e_skb_l3_header_offset(skb);
173 case MLX5_INLINE_MODE_L2:
175 hlen = mlx5e_skb_l2_header_offset(skb);
177 return min_t(u16, hlen, skb_headlen(skb));
180 static inline void mlx5e_insert_vlan(void *start, struct sk_buff *skb, u16 ihs)
182 struct vlan_ethhdr *vhdr = (struct vlan_ethhdr *)start;
183 int cpy1_sz = 2 * ETH_ALEN;
184 int cpy2_sz = ihs - cpy1_sz;
186 memcpy(vhdr, skb->data, cpy1_sz);
187 vhdr->h_vlan_proto = skb->vlan_proto;
188 vhdr->h_vlan_TCI = cpu_to_be16(skb_vlan_tag_get(skb));
189 memcpy(&vhdr->h_vlan_encapsulated_proto, skb->data + cpy1_sz, cpy2_sz);
193 mlx5e_txwqe_build_eseg_csum(struct mlx5e_txqsq *sq, struct sk_buff *skb, struct mlx5_wqe_eth_seg *eseg)
195 if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
196 eseg->cs_flags = MLX5_ETH_WQE_L3_CSUM;
197 if (skb->encapsulation) {
198 eseg->cs_flags |= MLX5_ETH_WQE_L3_INNER_CSUM |
199 MLX5_ETH_WQE_L4_INNER_CSUM;
200 sq->stats->csum_partial_inner++;
202 eseg->cs_flags |= MLX5_ETH_WQE_L4_CSUM;
203 sq->stats->csum_partial++;
206 sq->stats->csum_none++;
210 mlx5e_tx_get_gso_ihs(struct mlx5e_txqsq *sq, struct sk_buff *skb)
212 struct mlx5e_sq_stats *stats = sq->stats;
215 if (skb->encapsulation) {
216 ihs = skb_inner_transport_offset(skb) + inner_tcp_hdrlen(skb);
217 stats->tso_inner_packets++;
218 stats->tso_inner_bytes += skb->len - ihs;
220 if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4)
221 ihs = skb_transport_offset(skb) + sizeof(struct udphdr);
223 ihs = skb_transport_offset(skb) + tcp_hdrlen(skb);
224 stats->tso_packets++;
225 stats->tso_bytes += skb->len - ihs;
232 mlx5e_txwqe_build_dsegs(struct mlx5e_txqsq *sq, struct sk_buff *skb,
233 unsigned char *skb_data, u16 headlen,
234 struct mlx5_wqe_data_seg *dseg)
236 dma_addr_t dma_addr = 0;
241 dma_addr = dma_map_single(sq->pdev, skb_data, headlen,
243 if (unlikely(dma_mapping_error(sq->pdev, dma_addr)))
244 goto dma_unmap_wqe_err;
246 dseg->addr = cpu_to_be64(dma_addr);
247 dseg->lkey = sq->mkey_be;
248 dseg->byte_count = cpu_to_be32(headlen);
250 mlx5e_dma_push(sq, dma_addr, headlen, MLX5E_DMA_MAP_SINGLE);
255 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
256 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i];
257 int fsz = skb_frag_size(frag);
259 dma_addr = skb_frag_dma_map(sq->pdev, frag, 0, fsz,
261 if (unlikely(dma_mapping_error(sq->pdev, dma_addr)))
262 goto dma_unmap_wqe_err;
264 dseg->addr = cpu_to_be64(dma_addr);
265 dseg->lkey = sq->mkey_be;
266 dseg->byte_count = cpu_to_be32(fsz);
268 mlx5e_dma_push(sq, dma_addr, fsz, MLX5E_DMA_MAP_PAGE);
276 mlx5e_dma_unmap_wqe_err(sq, num_dma);
280 static inline void mlx5e_fill_sq_frag_edge(struct mlx5e_txqsq *sq,
281 struct mlx5_wq_cyc *wq,
284 struct mlx5e_tx_wqe_info *edge_wi, *wi = &sq->db.wqe_info[pi];
286 edge_wi = wi + nnops;
288 /* fill sq frag edge with nops to avoid wqe wrapping two pages */
289 for (; wi < edge_wi; wi++) {
292 mlx5e_post_nop(wq, sq->sqn, &sq->pc);
294 sq->stats->nop += nnops;
298 mlx5e_txwqe_complete(struct mlx5e_txqsq *sq, struct sk_buff *skb,
299 u8 opcode, u16 ds_cnt, u8 num_wqebbs, u32 num_bytes, u8 num_dma,
300 struct mlx5e_tx_wqe_info *wi, struct mlx5_wqe_ctrl_seg *cseg)
302 struct mlx5_wq_cyc *wq = &sq->wq;
304 wi->num_bytes = num_bytes;
305 wi->num_dma = num_dma;
306 wi->num_wqebbs = num_wqebbs;
309 cseg->opmod_idx_opcode = cpu_to_be32((sq->pc << 8) | opcode);
310 cseg->qpn_ds = cpu_to_be32((sq->sqn << 8) | ds_cnt);
312 netdev_tx_sent_queue(sq->txq, num_bytes);
314 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP))
315 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
317 sq->pc += wi->num_wqebbs;
318 if (unlikely(!mlx5e_wqc_has_room_for(wq, sq->cc, sq->pc, MLX5E_SQ_STOP_ROOM))) {
319 netif_tx_stop_queue(sq->txq);
320 sq->stats->stopped++;
323 if (!skb->xmit_more || netif_xmit_stopped(sq->txq))
324 mlx5e_notify_hw(wq, sq->pc, sq->uar_map, cseg);
327 #define INL_HDR_START_SZ (sizeof(((struct mlx5_wqe_eth_seg *)NULL)->inline_hdr.start))
329 netdev_tx_t mlx5e_sq_xmit(struct mlx5e_txqsq *sq, struct sk_buff *skb,
330 struct mlx5e_tx_wqe *wqe, u16 pi)
332 struct mlx5_wq_cyc *wq = &sq->wq;
333 struct mlx5_wqe_ctrl_seg *cseg;
334 struct mlx5_wqe_eth_seg *eseg;
335 struct mlx5_wqe_data_seg *dseg;
336 struct mlx5e_tx_wqe_info *wi;
338 struct mlx5e_sq_stats *stats = sq->stats;
339 u16 headlen, ihs, contig_wqebbs_room;
340 u16 ds_cnt, ds_cnt_inl = 0;
341 u8 num_wqebbs, opcode;
346 /* Calc ihs and ds cnt, no writes to wqe yet */
347 ds_cnt = sizeof(*wqe) / MLX5_SEND_WQE_DS;
348 if (skb_is_gso(skb)) {
349 opcode = MLX5_OPCODE_LSO;
350 mss = cpu_to_be16(skb_shinfo(skb)->gso_size);
351 ihs = mlx5e_tx_get_gso_ihs(sq, skb);
352 num_bytes = skb->len + (skb_shinfo(skb)->gso_segs - 1) * ihs;
353 stats->packets += skb_shinfo(skb)->gso_segs;
355 opcode = MLX5_OPCODE_SEND;
357 ihs = mlx5e_calc_min_inline(sq->min_inline_mode, skb);
358 num_bytes = max_t(unsigned int, skb->len, ETH_ZLEN);
362 stats->bytes += num_bytes;
363 stats->xmit_more += skb->xmit_more;
365 headlen = skb->len - ihs - skb->data_len;
367 ds_cnt += skb_shinfo(skb)->nr_frags;
370 ihs += !!skb_vlan_tag_present(skb) * VLAN_HLEN;
372 ds_cnt_inl = DIV_ROUND_UP(ihs - INL_HDR_START_SZ, MLX5_SEND_WQE_DS);
373 ds_cnt += ds_cnt_inl;
376 num_wqebbs = DIV_ROUND_UP(ds_cnt, MLX5_SEND_WQEBB_NUM_DS);
377 contig_wqebbs_room = mlx5_wq_cyc_get_contig_wqebbs(wq, pi);
378 if (unlikely(contig_wqebbs_room < num_wqebbs)) {
379 #ifdef CONFIG_MLX5_EN_IPSEC
380 struct mlx5_wqe_eth_seg cur_eth = wqe->eth;
382 mlx5e_fill_sq_frag_edge(sq, wq, pi, contig_wqebbs_room);
383 mlx5e_sq_fetch_wqe(sq, &wqe, &pi);
384 #ifdef CONFIG_MLX5_EN_IPSEC
390 wi = &sq->db.wqe_info[pi];
395 mlx5e_txwqe_build_eseg_csum(sq, skb, eseg);
400 eseg->inline_hdr.sz = cpu_to_be16(ihs);
401 if (skb_vlan_tag_present(skb)) {
403 mlx5e_insert_vlan(eseg->inline_hdr.start, skb, ihs);
404 stats->added_vlan_packets++;
406 memcpy(eseg->inline_hdr.start, skb->data, ihs);
409 } else if (skb_vlan_tag_present(skb)) {
410 eseg->insert.type = cpu_to_be16(MLX5_ETH_WQE_INSERT_VLAN);
411 if (skb->vlan_proto == cpu_to_be16(ETH_P_8021AD))
412 eseg->insert.type |= cpu_to_be16(MLX5_ETH_WQE_SVLAN);
413 eseg->insert.vlan_tci = cpu_to_be16(skb_vlan_tag_get(skb));
414 stats->added_vlan_packets++;
417 num_dma = mlx5e_txwqe_build_dsegs(sq, skb, skb->data + ihs, headlen, dseg);
418 if (unlikely(num_dma < 0))
421 mlx5e_txwqe_complete(sq, skb, opcode, ds_cnt, num_wqebbs, num_bytes,
428 dev_kfree_skb_any(skb);
433 netdev_tx_t mlx5e_xmit(struct sk_buff *skb, struct net_device *dev)
435 struct mlx5e_priv *priv = netdev_priv(dev);
436 struct mlx5e_tx_wqe *wqe;
437 struct mlx5e_txqsq *sq;
440 sq = priv->txq2sq[skb_get_queue_mapping(skb)];
441 mlx5e_sq_fetch_wqe(sq, &wqe, &pi);
443 /* might send skbs and update wqe and pi */
444 skb = mlx5e_accel_handle_tx(skb, sq, dev, &wqe, &pi);
448 return mlx5e_sq_xmit(sq, skb, wqe, pi);
451 static void mlx5e_dump_error_cqe(struct mlx5e_txqsq *sq,
452 struct mlx5_err_cqe *err_cqe)
454 u32 ci = mlx5_cqwq_get_ci(&sq->cq.wq);
456 netdev_err(sq->channel->netdev,
457 "Error cqe on cqn 0x%x, ci 0x%x, sqn 0x%x, opcode 0x%x, syndrome 0x%x, vendor syndrome 0x%x\n",
458 sq->cq.mcq.cqn, ci, sq->sqn,
459 get_cqe_opcode((struct mlx5_cqe64 *)err_cqe),
460 err_cqe->syndrome, err_cqe->vendor_err_synd);
461 mlx5_dump_err_cqe(sq->cq.mdev, err_cqe);
464 bool mlx5e_poll_tx_cq(struct mlx5e_cq *cq, int napi_budget)
466 struct mlx5e_sq_stats *stats;
467 struct mlx5e_txqsq *sq;
468 struct mlx5_cqe64 *cqe;
475 sq = container_of(cq, struct mlx5e_txqsq, cq);
477 if (unlikely(!test_bit(MLX5E_SQ_STATE_ENABLED, &sq->state)))
480 cqe = mlx5_cqwq_get_cqe(&cq->wq);
489 /* sq->cc must be updated only after mlx5_cqwq_update_db_record(),
490 * otherwise a cq overrun may occur
494 /* avoid dirtying sq cache line every cqe */
495 dma_fifo_cc = sq->dma_fifo_cc;
502 mlx5_cqwq_pop(&cq->wq);
504 wqe_counter = be16_to_cpu(cqe->wqe_counter);
506 if (unlikely(get_cqe_opcode(cqe) == MLX5_CQE_REQ_ERR)) {
507 if (!test_and_set_bit(MLX5E_SQ_STATE_RECOVERING,
509 mlx5e_dump_error_cqe(sq,
510 (struct mlx5_err_cqe *)cqe);
511 queue_work(cq->channel->priv->wq,
518 struct mlx5e_tx_wqe_info *wi;
523 last_wqe = (sqcc == wqe_counter);
525 ci = mlx5_wq_cyc_ctr2ix(&sq->wq, sqcc);
526 wi = &sq->db.wqe_info[ci];
529 if (unlikely(!skb)) { /* nop */
534 if (unlikely(skb_shinfo(skb)->tx_flags &
536 struct skb_shared_hwtstamps hwts = {};
539 mlx5_timecounter_cyc2time(sq->clock,
541 skb_tstamp_tx(skb, &hwts);
544 for (j = 0; j < wi->num_dma; j++) {
545 struct mlx5e_sq_dma *dma =
546 mlx5e_dma_get(sq, dma_fifo_cc++);
548 mlx5e_tx_dma_unmap(sq->pdev, dma);
552 nbytes += wi->num_bytes;
553 sqcc += wi->num_wqebbs;
554 napi_consume_skb(skb, napi_budget);
557 } while ((++i < MLX5E_TX_CQ_POLL_BUDGET) && (cqe = mlx5_cqwq_get_cqe(&cq->wq)));
561 mlx5_cqwq_update_db_record(&cq->wq);
563 /* ensure cq space is freed before enabling more cqes */
566 sq->dma_fifo_cc = dma_fifo_cc;
569 netdev_tx_completed_queue(sq->txq, npkts, nbytes);
571 if (netif_tx_queue_stopped(sq->txq) &&
572 mlx5e_wqc_has_room_for(&sq->wq, sq->cc, sq->pc,
573 MLX5E_SQ_STOP_ROOM) &&
574 !test_bit(MLX5E_SQ_STATE_RECOVERING, &sq->state)) {
575 netif_tx_wake_queue(sq->txq);
579 return (i == MLX5E_TX_CQ_POLL_BUDGET);
582 void mlx5e_free_txqsq_descs(struct mlx5e_txqsq *sq)
584 struct mlx5e_tx_wqe_info *wi;
589 while (sq->cc != sq->pc) {
590 ci = mlx5_wq_cyc_ctr2ix(&sq->wq, sq->cc);
591 wi = &sq->db.wqe_info[ci];
594 if (!skb) { /* nop */
599 for (i = 0; i < wi->num_dma; i++) {
600 struct mlx5e_sq_dma *dma =
601 mlx5e_dma_get(sq, sq->dma_fifo_cc++);
603 mlx5e_tx_dma_unmap(sq->pdev, dma);
606 dev_kfree_skb_any(skb);
607 sq->cc += wi->num_wqebbs;
611 #ifdef CONFIG_MLX5_CORE_IPOIB
613 mlx5i_txwqe_build_datagram(struct mlx5_av *av, u32 dqpn, u32 dqkey,
614 struct mlx5_wqe_datagram_seg *dseg)
616 memcpy(&dseg->av, av, sizeof(struct mlx5_av));
617 dseg->av.dqp_dct = cpu_to_be32(dqpn | MLX5_EXTENDED_UD_AV);
618 dseg->av.key.qkey.qkey = cpu_to_be32(dqkey);
621 netdev_tx_t mlx5i_sq_xmit(struct mlx5e_txqsq *sq, struct sk_buff *skb,
622 struct mlx5_av *av, u32 dqpn, u32 dqkey)
624 struct mlx5_wq_cyc *wq = &sq->wq;
625 struct mlx5i_tx_wqe *wqe;
627 struct mlx5_wqe_datagram_seg *datagram;
628 struct mlx5_wqe_ctrl_seg *cseg;
629 struct mlx5_wqe_eth_seg *eseg;
630 struct mlx5_wqe_data_seg *dseg;
631 struct mlx5e_tx_wqe_info *wi;
633 struct mlx5e_sq_stats *stats = sq->stats;
634 u16 headlen, ihs, pi, contig_wqebbs_room;
635 u16 ds_cnt, ds_cnt_inl = 0;
636 u8 num_wqebbs, opcode;
641 /* Calc ihs and ds cnt, no writes to wqe yet */
642 ds_cnt = sizeof(*wqe) / MLX5_SEND_WQE_DS;
643 if (skb_is_gso(skb)) {
644 opcode = MLX5_OPCODE_LSO;
645 mss = cpu_to_be16(skb_shinfo(skb)->gso_size);
646 ihs = mlx5e_tx_get_gso_ihs(sq, skb);
647 num_bytes = skb->len + (skb_shinfo(skb)->gso_segs - 1) * ihs;
648 stats->packets += skb_shinfo(skb)->gso_segs;
650 opcode = MLX5_OPCODE_SEND;
652 ihs = mlx5e_calc_min_inline(sq->min_inline_mode, skb);
653 num_bytes = max_t(unsigned int, skb->len, ETH_ZLEN);
657 stats->bytes += num_bytes;
658 stats->xmit_more += skb->xmit_more;
660 headlen = skb->len - ihs - skb->data_len;
662 ds_cnt += skb_shinfo(skb)->nr_frags;
665 ds_cnt_inl = DIV_ROUND_UP(ihs - INL_HDR_START_SZ, MLX5_SEND_WQE_DS);
666 ds_cnt += ds_cnt_inl;
669 num_wqebbs = DIV_ROUND_UP(ds_cnt, MLX5_SEND_WQEBB_NUM_DS);
670 pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc);
671 contig_wqebbs_room = mlx5_wq_cyc_get_contig_wqebbs(wq, pi);
672 if (unlikely(contig_wqebbs_room < num_wqebbs)) {
673 mlx5e_fill_sq_frag_edge(sq, wq, pi, contig_wqebbs_room);
674 pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc);
677 mlx5i_sq_fetch_wqe(sq, &wqe, pi);
680 wi = &sq->db.wqe_info[pi];
682 datagram = &wqe->datagram;
686 mlx5i_txwqe_build_datagram(av, dqpn, dqkey, datagram);
688 mlx5e_txwqe_build_eseg_csum(sq, skb, eseg);
693 memcpy(eseg->inline_hdr.start, skb->data, ihs);
694 eseg->inline_hdr.sz = cpu_to_be16(ihs);
698 num_dma = mlx5e_txwqe_build_dsegs(sq, skb, skb->data + ihs, headlen, dseg);
699 if (unlikely(num_dma < 0))
702 mlx5e_txwqe_complete(sq, skb, opcode, ds_cnt, num_wqebbs, num_bytes,
709 dev_kfree_skb_any(skb);