Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Saeed Mahameed | 968 | 26.95% | 14 | 21.54% |
Tariq Toukan | 806 | 22.44% | 14 | 21.54% |
Amir Vadai | 674 | 18.76% | 1 | 1.54% |
Achiad Shochat | 270 | 7.52% | 7 | 10.77% |
Eran Ben Elisha | 239 | 6.65% | 5 | 7.69% |
Hadar Hen Zion | 163 | 4.54% | 1 | 1.54% |
Huy Nguyen | 112 | 3.12% | 1 | 1.54% |
Matthew Finlay | 74 | 2.06% | 2 | 3.08% |
Gal Pressman | 42 | 1.17% | 5 | 7.69% |
Ilya Lesokhin | 38 | 1.06% | 1 | 1.54% |
Ilan Tayari | 38 | 1.06% | 1 | 1.54% |
Rana Shahout | 31 | 0.86% | 1 | 1.54% |
Erez Shitrit | 26 | 0.72% | 1 | 1.54% |
Boris Pismenny | 25 | 0.70% | 1 | 1.54% |
Raed Salem | 24 | 0.67% | 1 | 1.54% |
Moshe Shemesh | 22 | 0.61% | 1 | 1.54% |
Daniel Jurgens | 14 | 0.39% | 1 | 1.54% |
Feras Daoud | 9 | 0.25% | 1 | 1.54% |
Jesper Dangaard Brouer | 6 | 0.17% | 1 | 1.54% |
Alexander Duyck | 5 | 0.14% | 2 | 3.08% |
Michał Mirosław | 3 | 0.08% | 1 | 1.54% |
Stephen Hemminger | 2 | 0.06% | 1 | 1.54% |
Mohamad Haj Yahia | 1 | 0.03% | 1 | 1.54% |
Total | 3592 | 65 |
/* * Copyright (c) 2015-2016, Mellanox Technologies. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include <linux/tcp.h> #include <linux/if_vlan.h> #include <net/dsfield.h> #include "en.h" #include "ipoib/ipoib.h" #include "en_accel/en_accel.h" #include "lib/clock.h" #define MLX5E_SQ_NOPS_ROOM MLX5_SEND_WQE_MAX_WQEBBS #ifndef CONFIG_MLX5_EN_TLS #define MLX5E_SQ_STOP_ROOM (MLX5_SEND_WQE_MAX_WQEBBS +\ MLX5E_SQ_NOPS_ROOM) #else /* TLS offload requires MLX5E_SQ_STOP_ROOM to have * enough room for a resync SKB, a normal SKB and a NOP */ #define MLX5E_SQ_STOP_ROOM (2 * MLX5_SEND_WQE_MAX_WQEBBS +\ MLX5E_SQ_NOPS_ROOM) #endif static inline void mlx5e_tx_dma_unmap(struct device *pdev, struct mlx5e_sq_dma *dma) { switch (dma->type) { case MLX5E_DMA_MAP_SINGLE: dma_unmap_single(pdev, dma->addr, dma->size, DMA_TO_DEVICE); break; case MLX5E_DMA_MAP_PAGE: dma_unmap_page(pdev, dma->addr, dma->size, DMA_TO_DEVICE); break; default: WARN_ONCE(true, "mlx5e_tx_dma_unmap unknown DMA type!\n"); } } static inline struct mlx5e_sq_dma *mlx5e_dma_get(struct mlx5e_txqsq *sq, u32 i) { return &sq->db.dma_fifo[i & sq->dma_fifo_mask]; } static inline void mlx5e_dma_push(struct mlx5e_txqsq *sq, dma_addr_t addr, u32 size, enum mlx5e_dma_map_type map_type) { struct mlx5e_sq_dma *dma = mlx5e_dma_get(sq, sq->dma_fifo_pc++); dma->addr = addr; dma->size = size; dma->type = map_type; } static void mlx5e_dma_unmap_wqe_err(struct mlx5e_txqsq *sq, u8 num_dma) { int i; for (i = 0; i < num_dma; i++) { struct mlx5e_sq_dma *last_pushed_dma = mlx5e_dma_get(sq, --sq->dma_fifo_pc); mlx5e_tx_dma_unmap(sq->pdev, last_pushed_dma); } } #ifdef CONFIG_MLX5_CORE_EN_DCB static inline int mlx5e_get_dscp_up(struct mlx5e_priv *priv, struct sk_buff *skb) { int dscp_cp = 0; if (skb->protocol == htons(ETH_P_IP)) dscp_cp = ipv4_get_dsfield(ip_hdr(skb)) >> 2; else if (skb->protocol == htons(ETH_P_IPV6)) dscp_cp = ipv6_get_dsfield(ipv6_hdr(skb)) >> 2; return priv->dcbx_dp.dscp2prio[dscp_cp]; } #endif u16 mlx5e_select_queue(struct net_device *dev, struct sk_buff *skb, struct net_device *sb_dev, select_queue_fallback_t fallback) { struct mlx5e_priv *priv = netdev_priv(dev); int channel_ix = fallback(dev, skb, NULL); u16 num_channels; int up = 0; if (!netdev_get_num_tc(dev)) return channel_ix; #ifdef CONFIG_MLX5_CORE_EN_DCB if (priv->dcbx_dp.trust_state == MLX5_QPTS_TRUST_DSCP) up = mlx5e_get_dscp_up(priv, skb); else #endif if (skb_vlan_tag_present(skb)) up = skb_vlan_tag_get_prio(skb); /* channel_ix can be larger than num_channels since * dev->num_real_tx_queues = num_channels * num_tc */ num_channels = priv->channels.params.num_channels; if (channel_ix >= num_channels) channel_ix = reciprocal_scale(channel_ix, num_channels); return priv->channel_tc2txq[channel_ix][up]; } static inline int mlx5e_skb_l2_header_offset(struct sk_buff *skb) { #define MLX5E_MIN_INLINE (ETH_HLEN + VLAN_HLEN) return max(skb_network_offset(skb), MLX5E_MIN_INLINE); } static inline int mlx5e_skb_l3_header_offset(struct sk_buff *skb) { struct flow_keys keys; if (skb_transport_header_was_set(skb)) return skb_transport_offset(skb); else if (skb_flow_dissect_flow_keys(skb, &keys, 0)) return keys.control.thoff; else return mlx5e_skb_l2_header_offset(skb); } static inline u16 mlx5e_calc_min_inline(enum mlx5_inline_modes mode, struct sk_buff *skb) { u16 hlen; switch (mode) { case MLX5_INLINE_MODE_NONE: return 0; case MLX5_INLINE_MODE_TCP_UDP: hlen = eth_get_headlen(skb->data, skb_headlen(skb)); if (hlen == ETH_HLEN && !skb_vlan_tag_present(skb)) hlen += VLAN_HLEN; break; case MLX5_INLINE_MODE_IP: /* When transport header is set to zero, it means no transport * header. When transport header is set to 0xff's, it means * transport header wasn't set. */ if (skb_transport_offset(skb)) { hlen = mlx5e_skb_l3_header_offset(skb); break; } /* fall through */ case MLX5_INLINE_MODE_L2: default: hlen = mlx5e_skb_l2_header_offset(skb); } return min_t(u16, hlen, skb_headlen(skb)); } static inline void mlx5e_insert_vlan(void *start, struct sk_buff *skb, u16 ihs) { struct vlan_ethhdr *vhdr = (struct vlan_ethhdr *)start; int cpy1_sz = 2 * ETH_ALEN; int cpy2_sz = ihs - cpy1_sz; memcpy(vhdr, skb->data, cpy1_sz); vhdr->h_vlan_proto = skb->vlan_proto; vhdr->h_vlan_TCI = cpu_to_be16(skb_vlan_tag_get(skb)); memcpy(&vhdr->h_vlan_encapsulated_proto, skb->data + cpy1_sz, cpy2_sz); } static inline void mlx5e_txwqe_build_eseg_csum(struct mlx5e_txqsq *sq, struct sk_buff *skb, struct mlx5_wqe_eth_seg *eseg) { if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { eseg->cs_flags = MLX5_ETH_WQE_L3_CSUM; if (skb->encapsulation) { eseg->cs_flags |= MLX5_ETH_WQE_L3_INNER_CSUM | MLX5_ETH_WQE_L4_INNER_CSUM; sq->stats->csum_partial_inner++; } else { eseg->cs_flags |= MLX5_ETH_WQE_L4_CSUM; sq->stats->csum_partial++; } } else sq->stats->csum_none++; } static inline u16 mlx5e_tx_get_gso_ihs(struct mlx5e_txqsq *sq, struct sk_buff *skb) { struct mlx5e_sq_stats *stats = sq->stats; u16 ihs; if (skb->encapsulation) { ihs = skb_inner_transport_offset(skb) + inner_tcp_hdrlen(skb); stats->tso_inner_packets++; stats->tso_inner_bytes += skb->len - ihs; } else { if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) ihs = skb_transport_offset(skb) + sizeof(struct udphdr); else ihs = skb_transport_offset(skb) + tcp_hdrlen(skb); stats->tso_packets++; stats->tso_bytes += skb->len - ihs; } return ihs; } static inline int mlx5e_txwqe_build_dsegs(struct mlx5e_txqsq *sq, struct sk_buff *skb, unsigned char *skb_data, u16 headlen, struct mlx5_wqe_data_seg *dseg) { dma_addr_t dma_addr = 0; u8 num_dma = 0; int i; if (headlen) { dma_addr = dma_map_single(sq->pdev, skb_data, headlen, DMA_TO_DEVICE); if (unlikely(dma_mapping_error(sq->pdev, dma_addr))) goto dma_unmap_wqe_err; dseg->addr = cpu_to_be64(dma_addr); dseg->lkey = sq->mkey_be; dseg->byte_count = cpu_to_be32(headlen); mlx5e_dma_push(sq, dma_addr, headlen, MLX5E_DMA_MAP_SINGLE); num_dma++; dseg++; } for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i]; int fsz = skb_frag_size(frag); dma_addr = skb_frag_dma_map(sq->pdev, frag, 0, fsz, DMA_TO_DEVICE); if (unlikely(dma_mapping_error(sq->pdev, dma_addr))) goto dma_unmap_wqe_err; dseg->addr = cpu_to_be64(dma_addr); dseg->lkey = sq->mkey_be; dseg->byte_count = cpu_to_be32(fsz); mlx5e_dma_push(sq, dma_addr, fsz, MLX5E_DMA_MAP_PAGE); num_dma++; dseg++; } return num_dma; dma_unmap_wqe_err: mlx5e_dma_unmap_wqe_err(sq, num_dma); return -ENOMEM; } static inline void mlx5e_fill_sq_frag_edge(struct mlx5e_txqsq *sq, struct mlx5_wq_cyc *wq, u16 pi, u16 nnops) { struct mlx5e_tx_wqe_info *edge_wi, *wi = &sq->db.wqe_info[pi]; edge_wi = wi + nnops; /* fill sq frag edge with nops to avoid wqe wrapping two pages */ for (; wi < edge_wi; wi++) { wi->skb = NULL; wi->num_wqebbs = 1; mlx5e_post_nop(wq, sq->sqn, &sq->pc); } sq->stats->nop += nnops; } static inline void mlx5e_txwqe_complete(struct mlx5e_txqsq *sq, struct sk_buff *skb, u8 opcode, u16 ds_cnt, u8 num_wqebbs, u32 num_bytes, u8 num_dma, struct mlx5e_tx_wqe_info *wi, struct mlx5_wqe_ctrl_seg *cseg) { struct mlx5_wq_cyc *wq = &sq->wq; wi->num_bytes = num_bytes; wi->num_dma = num_dma; wi->num_wqebbs = num_wqebbs; wi->skb = skb; cseg->opmod_idx_opcode = cpu_to_be32((sq->pc << 8) | opcode); cseg->qpn_ds = cpu_to_be32((sq->sqn << 8) | ds_cnt); netdev_tx_sent_queue(sq->txq, num_bytes); if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; sq->pc += wi->num_wqebbs; if (unlikely(!mlx5e_wqc_has_room_for(wq, sq->cc, sq->pc, MLX5E_SQ_STOP_ROOM))) { netif_tx_stop_queue(sq->txq); sq->stats->stopped++; } if (!skb->xmit_more || netif_xmit_stopped(sq->txq)) mlx5e_notify_hw(wq, sq->pc, sq->uar_map, cseg); } #define INL_HDR_START_SZ (sizeof(((struct mlx5_wqe_eth_seg *)NULL)->inline_hdr.start)) netdev_tx_t mlx5e_sq_xmit(struct mlx5e_txqsq *sq, struct sk_buff *skb, struct mlx5e_tx_wqe *wqe, u16 pi) { struct mlx5_wq_cyc *wq = &sq->wq; struct mlx5_wqe_ctrl_seg *cseg; struct mlx5_wqe_eth_seg *eseg; struct mlx5_wqe_data_seg *dseg; struct mlx5e_tx_wqe_info *wi; struct mlx5e_sq_stats *stats = sq->stats; u16 headlen, ihs, contig_wqebbs_room; u16 ds_cnt, ds_cnt_inl = 0; u8 num_wqebbs, opcode; u32 num_bytes; int num_dma; __be16 mss; /* Calc ihs and ds cnt, no writes to wqe yet */ ds_cnt = sizeof(*wqe) / MLX5_SEND_WQE_DS; if (skb_is_gso(skb)) { opcode = MLX5_OPCODE_LSO; mss = cpu_to_be16(skb_shinfo(skb)->gso_size); ihs = mlx5e_tx_get_gso_ihs(sq, skb); num_bytes = skb->len + (skb_shinfo(skb)->gso_segs - 1) * ihs; stats->packets += skb_shinfo(skb)->gso_segs; } else { opcode = MLX5_OPCODE_SEND; mss = 0; ihs = mlx5e_calc_min_inline(sq->min_inline_mode, skb); num_bytes = max_t(unsigned int, skb->len, ETH_ZLEN); stats->packets++; } stats->bytes += num_bytes; stats->xmit_more += skb->xmit_more; headlen = skb->len - ihs - skb->data_len; ds_cnt += !!headlen; ds_cnt += skb_shinfo(skb)->nr_frags; if (ihs) { ihs += !!skb_vlan_tag_present(skb) * VLAN_HLEN; ds_cnt_inl = DIV_ROUND_UP(ihs - INL_HDR_START_SZ, MLX5_SEND_WQE_DS); ds_cnt += ds_cnt_inl; } num_wqebbs = DIV_ROUND_UP(ds_cnt, MLX5_SEND_WQEBB_NUM_DS); contig_wqebbs_room = mlx5_wq_cyc_get_contig_wqebbs(wq, pi); if (unlikely(contig_wqebbs_room < num_wqebbs)) { #ifdef CONFIG_MLX5_EN_IPSEC struct mlx5_wqe_eth_seg cur_eth = wqe->eth; #endif mlx5e_fill_sq_frag_edge(sq, wq, pi, contig_wqebbs_room); mlx5e_sq_fetch_wqe(sq, &wqe, &pi); #ifdef CONFIG_MLX5_EN_IPSEC wqe->eth = cur_eth; #endif } /* fill wqe */ wi = &sq->db.wqe_info[pi]; cseg = &wqe->ctrl; eseg = &wqe->eth; dseg = wqe->data; mlx5e_txwqe_build_eseg_csum(sq, skb, eseg); eseg->mss = mss; if (ihs) { eseg->inline_hdr.sz = cpu_to_be16(ihs); if (skb_vlan_tag_present(skb)) { ihs -= VLAN_HLEN; mlx5e_insert_vlan(eseg->inline_hdr.start, skb, ihs); stats->added_vlan_packets++; } else { memcpy(eseg->inline_hdr.start, skb->data, ihs); } dseg += ds_cnt_inl; } else if (skb_vlan_tag_present(skb)) { eseg->insert.type = cpu_to_be16(MLX5_ETH_WQE_INSERT_VLAN); if (skb->vlan_proto == cpu_to_be16(ETH_P_8021AD)) eseg->insert.type |= cpu_to_be16(MLX5_ETH_WQE_SVLAN); eseg->insert.vlan_tci = cpu_to_be16(skb_vlan_tag_get(skb)); stats->added_vlan_packets++; } num_dma = mlx5e_txwqe_build_dsegs(sq, skb, skb->data + ihs, headlen, dseg); if (unlikely(num_dma < 0)) goto err_drop; mlx5e_txwqe_complete(sq, skb, opcode, ds_cnt, num_wqebbs, num_bytes, num_dma, wi, cseg); return NETDEV_TX_OK; err_drop: stats->dropped++; dev_kfree_skb_any(skb); return NETDEV_TX_OK; } netdev_tx_t mlx5e_xmit(struct sk_buff *skb, struct net_device *dev) { struct mlx5e_priv *priv = netdev_priv(dev); struct mlx5e_tx_wqe *wqe; struct mlx5e_txqsq *sq; u16 pi; sq = priv->txq2sq[skb_get_queue_mapping(skb)]; mlx5e_sq_fetch_wqe(sq, &wqe, &pi); /* might send skbs and update wqe and pi */ skb = mlx5e_accel_handle_tx(skb, sq, dev, &wqe, &pi); if (unlikely(!skb)) return NETDEV_TX_OK; return mlx5e_sq_xmit(sq, skb, wqe, pi); } static void mlx5e_dump_error_cqe(struct mlx5e_txqsq *sq, struct mlx5_err_cqe *err_cqe) { u32 ci = mlx5_cqwq_get_ci(&sq->cq.wq); netdev_err(sq->channel->netdev, "Error cqe on cqn 0x%x, ci 0x%x, sqn 0x%x, opcode 0x%x, syndrome 0x%x, vendor syndrome 0x%x\n", sq->cq.mcq.cqn, ci, sq->sqn, get_cqe_opcode((struct mlx5_cqe64 *)err_cqe), err_cqe->syndrome, err_cqe->vendor_err_synd); mlx5_dump_err_cqe(sq->cq.mdev, err_cqe); } bool mlx5e_poll_tx_cq(struct mlx5e_cq *cq, int napi_budget) { struct mlx5e_sq_stats *stats; struct mlx5e_txqsq *sq; struct mlx5_cqe64 *cqe; u32 dma_fifo_cc; u32 nbytes; u16 npkts; u16 sqcc; int i; sq = container_of(cq, struct mlx5e_txqsq, cq); if (unlikely(!test_bit(MLX5E_SQ_STATE_ENABLED, &sq->state))) return false; cqe = mlx5_cqwq_get_cqe(&cq->wq); if (!cqe) return false; stats = sq->stats; npkts = 0; nbytes = 0; /* sq->cc must be updated only after mlx5_cqwq_update_db_record(), * otherwise a cq overrun may occur */ sqcc = sq->cc; /* avoid dirtying sq cache line every cqe */ dma_fifo_cc = sq->dma_fifo_cc; i = 0; do { u16 wqe_counter; bool last_wqe; mlx5_cqwq_pop(&cq->wq); wqe_counter = be16_to_cpu(cqe->wqe_counter); if (unlikely(get_cqe_opcode(cqe) == MLX5_CQE_REQ_ERR)) { if (!test_and_set_bit(MLX5E_SQ_STATE_RECOVERING, &sq->state)) { mlx5e_dump_error_cqe(sq, (struct mlx5_err_cqe *)cqe); queue_work(cq->channel->priv->wq, &sq->recover.recover_work); } stats->cqe_err++; } do { struct mlx5e_tx_wqe_info *wi; struct sk_buff *skb; u16 ci; int j; last_wqe = (sqcc == wqe_counter); ci = mlx5_wq_cyc_ctr2ix(&sq->wq, sqcc); wi = &sq->db.wqe_info[ci]; skb = wi->skb; if (unlikely(!skb)) { /* nop */ sqcc++; continue; } if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) { struct skb_shared_hwtstamps hwts = {}; hwts.hwtstamp = mlx5_timecounter_cyc2time(sq->clock, get_cqe_ts(cqe)); skb_tstamp_tx(skb, &hwts); } for (j = 0; j < wi->num_dma; j++) { struct mlx5e_sq_dma *dma = mlx5e_dma_get(sq, dma_fifo_cc++); mlx5e_tx_dma_unmap(sq->pdev, dma); } npkts++; nbytes += wi->num_bytes; sqcc += wi->num_wqebbs; napi_consume_skb(skb, napi_budget); } while (!last_wqe); } while ((++i < MLX5E_TX_CQ_POLL_BUDGET) && (cqe = mlx5_cqwq_get_cqe(&cq->wq))); stats->cqes += i; mlx5_cqwq_update_db_record(&cq->wq); /* ensure cq space is freed before enabling more cqes */ wmb(); sq->dma_fifo_cc = dma_fifo_cc; sq->cc = sqcc; netdev_tx_completed_queue(sq->txq, npkts, nbytes); if (netif_tx_queue_stopped(sq->txq) && mlx5e_wqc_has_room_for(&sq->wq, sq->cc, sq->pc, MLX5E_SQ_STOP_ROOM) && !test_bit(MLX5E_SQ_STATE_RECOVERING, &sq->state)) { netif_tx_wake_queue(sq->txq); stats->wake++; } return (i == MLX5E_TX_CQ_POLL_BUDGET); } void mlx5e_free_txqsq_descs(struct mlx5e_txqsq *sq) { struct mlx5e_tx_wqe_info *wi; struct sk_buff *skb; u16 ci; int i; while (sq->cc != sq->pc) { ci = mlx5_wq_cyc_ctr2ix(&sq->wq, sq->cc); wi = &sq->db.wqe_info[ci]; skb = wi->skb; if (!skb) { /* nop */ sq->cc++; continue; } for (i = 0; i < wi->num_dma; i++) { struct mlx5e_sq_dma *dma = mlx5e_dma_get(sq, sq->dma_fifo_cc++); mlx5e_tx_dma_unmap(sq->pdev, dma); } dev_kfree_skb_any(skb); sq->cc += wi->num_wqebbs; } } #ifdef CONFIG_MLX5_CORE_IPOIB static inline void mlx5i_txwqe_build_datagram(struct mlx5_av *av, u32 dqpn, u32 dqkey, struct mlx5_wqe_datagram_seg *dseg) { memcpy(&dseg->av, av, sizeof(struct mlx5_av)); dseg->av.dqp_dct = cpu_to_be32(dqpn | MLX5_EXTENDED_UD_AV); dseg->av.key.qkey.qkey = cpu_to_be32(dqkey); } netdev_tx_t mlx5i_sq_xmit(struct mlx5e_txqsq *sq, struct sk_buff *skb, struct mlx5_av *av, u32 dqpn, u32 dqkey) { struct mlx5_wq_cyc *wq = &sq->wq; struct mlx5i_tx_wqe *wqe; struct mlx5_wqe_datagram_seg *datagram; struct mlx5_wqe_ctrl_seg *cseg; struct mlx5_wqe_eth_seg *eseg; struct mlx5_wqe_data_seg *dseg; struct mlx5e_tx_wqe_info *wi; struct mlx5e_sq_stats *stats = sq->stats; u16 headlen, ihs, pi, contig_wqebbs_room; u16 ds_cnt, ds_cnt_inl = 0; u8 num_wqebbs, opcode; u32 num_bytes; int num_dma; __be16 mss; /* Calc ihs and ds cnt, no writes to wqe yet */ ds_cnt = sizeof(*wqe) / MLX5_SEND_WQE_DS; if (skb_is_gso(skb)) { opcode = MLX5_OPCODE_LSO; mss = cpu_to_be16(skb_shinfo(skb)->gso_size); ihs = mlx5e_tx_get_gso_ihs(sq, skb); num_bytes = skb->len + (skb_shinfo(skb)->gso_segs - 1) * ihs; stats->packets += skb_shinfo(skb)->gso_segs; } else { opcode = MLX5_OPCODE_SEND; mss = 0; ihs = mlx5e_calc_min_inline(sq->min_inline_mode, skb); num_bytes = max_t(unsigned int, skb->len, ETH_ZLEN); stats->packets++; } stats->bytes += num_bytes; stats->xmit_more += skb->xmit_more; headlen = skb->len - ihs - skb->data_len; ds_cnt += !!headlen; ds_cnt += skb_shinfo(skb)->nr_frags; if (ihs) { ds_cnt_inl = DIV_ROUND_UP(ihs - INL_HDR_START_SZ, MLX5_SEND_WQE_DS); ds_cnt += ds_cnt_inl; } num_wqebbs = DIV_ROUND_UP(ds_cnt, MLX5_SEND_WQEBB_NUM_DS); pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc); contig_wqebbs_room = mlx5_wq_cyc_get_contig_wqebbs(wq, pi); if (unlikely(contig_wqebbs_room < num_wqebbs)) { mlx5e_fill_sq_frag_edge(sq, wq, pi, contig_wqebbs_room); pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc); } mlx5i_sq_fetch_wqe(sq, &wqe, pi); /* fill wqe */ wi = &sq->db.wqe_info[pi]; cseg = &wqe->ctrl; datagram = &wqe->datagram; eseg = &wqe->eth; dseg = wqe->data; mlx5i_txwqe_build_datagram(av, dqpn, dqkey, datagram); mlx5e_txwqe_build_eseg_csum(sq, skb, eseg); eseg->mss = mss; if (ihs) { memcpy(eseg->inline_hdr.start, skb->data, ihs); eseg->inline_hdr.sz = cpu_to_be16(ihs); dseg += ds_cnt_inl; } num_dma = mlx5e_txwqe_build_dsegs(sq, skb, skb->data + ihs, headlen, dseg); if (unlikely(num_dma < 0)) goto err_drop; mlx5e_txwqe_complete(sq, skb, opcode, ds_cnt, num_wqebbs, num_bytes, num_dma, wi, cseg); return NETDEV_TX_OK; err_drop: stats->dropped++; dev_kfree_skb_any(skb); return NETDEV_TX_OK; } #endif
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