From patchwork Mon Dec 7 21:06:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris Pismenny X-Patchwork-Id: 11956823 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B99AC4361B for ; Mon, 7 Dec 2020 21:07:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4876C2395B for ; Mon, 7 Dec 2020 21:07:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727550AbgLGVHz (ORCPT ); Mon, 7 Dec 2020 16:07:55 -0500 Received: from mail-il-dmz.mellanox.com ([193.47.165.129]:45876 "EHLO mellanox.co.il" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727148AbgLGVHy (ORCPT ); Mon, 7 Dec 2020 16:07:54 -0500 Received: from Internal Mail-Server by MTLPINE1 (envelope-from borisp@mellanox.com) with SMTP; 7 Dec 2020 23:06:54 +0200 Received: from gen-l-vrt-133.mtl.labs.mlnx. (gen-l-vrt-133.mtl.labs.mlnx [10.237.11.160]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id 0B7L6qIL029788; Mon, 7 Dec 2020 23:06:54 +0200 From: Boris Pismenny To: kuba@kernel.org, davem@davemloft.net, saeedm@nvidia.com, hch@lst.de, sagi@grimberg.me, axboe@fb.com, kbusch@kernel.org, viro@zeniv.linux.org.uk, edumazet@google.com Cc: boris.pismenny@gmail.com, linux-nvme@lists.infradead.org, netdev@vger.kernel.org, benishay@nvidia.com, ogerlitz@nvidia.com, yorayz@nvidia.com, Ben Ben-Ishay , Or Gerlitz , Yoray Zack Subject: [PATCH v1 net-next 13/15] net/mlx5e: NVMEoTCP, data-path for DDP offload Date: Mon, 7 Dec 2020 23:06:47 +0200 Message-Id: <20201207210649.19194-14-borisp@mellanox.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20201207210649.19194-1-borisp@mellanox.com> References: <20201207210649.19194-1-borisp@mellanox.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Ben Ben-ishay NVMEoTCP direct data placement constructs an SKB from each CQE, while pointing at NVME buffers. This enables the offload, as the NVMe-TCP layer will skip the copy when src == dst. Signed-off-by: Boris Pismenny Signed-off-by: Ben Ben-Ishay Signed-off-by: Or Gerlitz Signed-off-by: Yoray Zack --- .../net/ethernet/mellanox/mlx5/core/Makefile | 2 +- drivers/net/ethernet/mellanox/mlx5/core/en.h | 1 + .../ethernet/mellanox/mlx5/core/en/xsk/rx.c | 1 + .../ethernet/mellanox/mlx5/core/en/xsk/rx.h | 1 + .../mlx5/core/en_accel/nvmeotcp_rxtx.c | 240 ++++++++++++++++++ .../mlx5/core/en_accel/nvmeotcp_rxtx.h | 26 ++ .../net/ethernet/mellanox/mlx5/core/en_rx.c | 51 +++- 7 files changed, 315 insertions(+), 7 deletions(-) create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en_accel/nvmeotcp_rxtx.c create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en_accel/nvmeotcp_rxtx.h diff --git a/drivers/net/ethernet/mellanox/mlx5/core/Makefile b/drivers/net/ethernet/mellanox/mlx5/core/Makefile index 053655a96db8..c7735e2d938a 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/Makefile +++ b/drivers/net/ethernet/mellanox/mlx5/core/Makefile @@ -88,4 +88,4 @@ mlx5_core-$(CONFIG_MLX5_SW_STEERING) += steering/dr_domain.o steering/dr_table.o steering/dr_cmd.o steering/dr_fw.o \ steering/dr_action.o steering/fs_dr.o -mlx5_core-$(CONFIG_MLX5_EN_NVMEOTCP) += en_accel/fs_tcp.o en_accel/nvmeotcp.o +mlx5_core-$(CONFIG_MLX5_EN_NVMEOTCP) += en_accel/fs_tcp.o en_accel/nvmeotcp.o en_accel/nvmeotcp_rxtx.o diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h index 8e257749018a..4f617e663361 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h @@ -573,6 +573,7 @@ struct mlx5e_rq; typedef void (*mlx5e_fp_handle_rx_cqe)(struct mlx5e_rq*, struct mlx5_cqe64*); typedef struct sk_buff * (*mlx5e_fp_skb_from_cqe_mpwrq)(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi, + struct mlx5_cqe64 *cqe, u16 cqe_bcnt, u32 head_offset, u32 page_idx); typedef struct sk_buff * (*mlx5e_fp_skb_from_cqe)(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe, diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.c index 8e7b877d8a12..9a6fbd1b1c34 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.c @@ -25,6 +25,7 @@ static struct sk_buff *mlx5e_xsk_construct_skb(struct mlx5e_rq *rq, void *data, struct sk_buff *mlx5e_xsk_skb_from_cqe_mpwrq_linear(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi, + struct mlx5_cqe64 *cqe, u16 cqe_bcnt, u32 head_offset, u32 page_idx) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.h b/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.h index 7f88ccf67fdd..112c5b3ec165 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.h @@ -11,6 +11,7 @@ struct sk_buff *mlx5e_xsk_skb_from_cqe_mpwrq_linear(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi, + struct mlx5_cqe64 *cqe, u16 cqe_bcnt, u32 head_offset, u32 page_idx); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/nvmeotcp_rxtx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/nvmeotcp_rxtx.c new file mode 100644 index 000000000000..be5111b66cc9 --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/nvmeotcp_rxtx.c @@ -0,0 +1,240 @@ +// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB +// Copyright (c) 2020 Mellanox Technologies. + +#include "en_accel/nvmeotcp_rxtx.h" +#include "en_accel/nvmeotcp.h" +#include + +#define MLX5E_TC_FLOW_ID_MASK 0x00ffffff +static void nvmeotcp_update_resync(struct mlx5e_nvmeotcp_queue *queue, + struct mlx5e_cqe128 *cqe128) +{ + const struct tcp_ddp_ulp_ops *ulp_ops; + u32 seq; + + seq = be32_to_cpu(cqe128->resync_tcp_sn); + ulp_ops = inet_csk(queue->sk)->icsk_ulp_ddp_ops; + if (ulp_ops && ulp_ops->resync_request) + ulp_ops->resync_request(queue->sk, seq, TCP_DDP_RESYNC_REQ); +} + +static void mlx5e_nvmeotcp_advance_sgl_iter(struct mlx5e_nvmeotcp_queue *queue) +{ + struct nvmeotcp_queue_entry *nqe = &queue->ccid_table[queue->ccid]; + + queue->ccoff += nqe->sgl[queue->ccsglidx].length; + queue->ccoff_inner = 0; + queue->ccsglidx++; +} + +static inline void +mlx5e_nvmeotcp_add_skb_frag(struct net_device *netdev, struct sk_buff *skb, + struct mlx5e_nvmeotcp_queue *queue, + struct nvmeotcp_queue_entry *nqe, u32 fragsz) +{ + dma_sync_single_for_cpu(&netdev->dev, + nqe->sgl[queue->ccsglidx].offset + queue->ccoff_inner, + fragsz, DMA_FROM_DEVICE); + page_ref_inc(compound_head(sg_page(&nqe->sgl[queue->ccsglidx]))); + // XXX: consider reducing the truesize, as no new memory is consumed + skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, + sg_page(&nqe->sgl[queue->ccsglidx]), + nqe->sgl[queue->ccsglidx].offset + queue->ccoff_inner, + fragsz, + fragsz); +} + +int mlx5_nvmeotcp_get_headlen(struct mlx5_cqe64 *cqe, u32 cqe_bcnt) +{ + struct mlx5e_cqe128 *cqe128; + + if (!cqe_is_nvmeotcp_zc(cqe) || cqe_is_nvmeotcp_resync(cqe)) + return cqe_bcnt; + + cqe128 = (struct mlx5e_cqe128 *)((char *)cqe - 64); + return be16_to_cpu(cqe128->hlen); +} + +static struct sk_buff* +mlx5_nvmeotcp_add_tail_nonlinear(struct mlx5e_nvmeotcp_queue *queue, + struct sk_buff *skb, skb_frag_t *org_frags, + int org_nr_frags, int frag_index) +{ + struct mlx5e_priv *priv = queue->priv; + + while (org_nr_frags != frag_index) { + if (skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS) { + dev_kfree_skb_any(skb); + return NULL; + } + skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, + skb_frag_page(&org_frags[frag_index]), + skb_frag_off(&org_frags[frag_index]), + skb_frag_size(&org_frags[frag_index]), + skb_frag_size(&org_frags[frag_index])); + page_ref_inc(skb_frag_page(&org_frags[frag_index])); + frag_index++; + } + return skb; +} + +static struct sk_buff* +mlx5_nvmeotcp_add_tail(struct mlx5e_nvmeotcp_queue *queue, struct sk_buff *skb, + int offset, int len) +{ + struct mlx5e_priv *priv = queue->priv; + + if (skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS) { + dev_kfree_skb_any(skb); + return NULL; + } + skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, + virt_to_page(skb->data), + offset, + len, + len); + page_ref_inc(virt_to_page(skb->data)); + return skb; +} + +static void mlx5_nvmeotcp_trim_nonlinear(struct sk_buff *skb, + skb_frag_t *org_frags, + int *frag_index, + int remaining) +{ + unsigned int frag_size; + int nr_frags; + + /* skip @remaining bytes in frags */ + *frag_index = 0; + while (remaining) { + frag_size = skb_frag_size(&skb_shinfo(skb)->frags[*frag_index]); + if (frag_size > remaining) { + skb_frag_off_add(&skb_shinfo(skb)->frags[*frag_index], + remaining); + skb_frag_size_sub(&skb_shinfo(skb)->frags[*frag_index], + remaining); + remaining = 0; + } else { + remaining -= frag_size; + skb_frag_unref(skb, *frag_index); + *frag_index += 1; + } + } + + /* save original frags for the tail and unref */ + nr_frags = skb_shinfo(skb)->nr_frags; + memcpy(&org_frags[*frag_index], &skb_shinfo(skb)->frags[*frag_index], + (nr_frags - *frag_index) * sizeof(skb_frag_t)); + while (--nr_frags >= *frag_index) + skb_frag_unref(skb, nr_frags); + + /* remove frags from skb */ + skb_shinfo(skb)->nr_frags = 0; + skb->len -= skb->data_len; + skb->truesize -= skb->data_len; + skb->data_len = 0; +} + +struct sk_buff* +mlx5e_nvmeotcp_handle_rx_skb(struct net_device *netdev, struct sk_buff *skb, + struct mlx5_cqe64 *cqe, u32 cqe_bcnt, + bool linear) +{ + int ccoff, cclen, hlen, ccid, remaining, fragsz, to_copy = 0; + struct mlx5e_priv *priv = netdev_priv(netdev); + skb_frag_t org_frags[MAX_SKB_FRAGS]; + struct mlx5e_nvmeotcp_queue *queue; + struct nvmeotcp_queue_entry *nqe; + int org_nr_frags, frag_index; + struct mlx5e_cqe128 *cqe128; + u32 queue_id; + + queue_id = (be32_to_cpu(cqe->sop_drop_qpn) & MLX5E_TC_FLOW_ID_MASK); + queue = mlx5e_nvmeotcp_get_queue(priv->nvmeotcp, queue_id); + if (unlikely(!queue)) { + dev_kfree_skb_any(skb); + return NULL; + } + + cqe128 = (struct mlx5e_cqe128 *)((char *)cqe - 64); + if (cqe_is_nvmeotcp_resync(cqe)) { + nvmeotcp_update_resync(queue, cqe128); + mlx5e_nvmeotcp_put_queue(queue); + return skb; + } + + /* cc ddp from cqe */ + ccid = be16_to_cpu(cqe128->ccid); + ccoff = be32_to_cpu(cqe128->ccoff); + cclen = be16_to_cpu(cqe128->cclen); + hlen = be16_to_cpu(cqe128->hlen); + + /* carve a hole in the skb for DDP data */ + if (linear) { + skb_trim(skb, hlen); + } else { + org_nr_frags = skb_shinfo(skb)->nr_frags; + mlx5_nvmeotcp_trim_nonlinear(skb, org_frags, &frag_index, + cclen); + } + + nqe = &queue->ccid_table[ccid]; + + /* packet starts new ccid? */ + if (queue->ccid != ccid || queue->ccid_gen != nqe->ccid_gen) { + queue->ccid = ccid; + queue->ccoff = 0; + queue->ccoff_inner = 0; + queue->ccsglidx = 0; + queue->ccid_gen = nqe->ccid_gen; + } + + /* skip inside cc until the ccoff in the cqe */ + while (queue->ccoff + queue->ccoff_inner < ccoff) { + remaining = nqe->sgl[queue->ccsglidx].length - queue->ccoff_inner; + fragsz = min_t(off_t, remaining, + ccoff - (queue->ccoff + queue->ccoff_inner)); + + if (fragsz == remaining) + mlx5e_nvmeotcp_advance_sgl_iter(queue); + else + queue->ccoff_inner += fragsz; + } + + /* adjust the skb according to the cqe cc */ + while (to_copy < cclen) { + if (skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS) { + dev_kfree_skb_any(skb); + mlx5e_nvmeotcp_put_queue(queue); + return NULL; + } + + remaining = nqe->sgl[queue->ccsglidx].length - queue->ccoff_inner; + fragsz = min_t(int, remaining, cclen - to_copy); + + mlx5e_nvmeotcp_add_skb_frag(netdev, skb, queue, nqe, fragsz); + to_copy += fragsz; + if (fragsz == remaining) + mlx5e_nvmeotcp_advance_sgl_iter(queue); + else + queue->ccoff_inner += fragsz; + } + + if (cqe_bcnt > hlen + cclen) { + remaining = cqe_bcnt - hlen - cclen; + if (linear) + skb = mlx5_nvmeotcp_add_tail(queue, skb, + offset_in_page(skb->data) + + hlen + cclen, + remaining); + else + skb = mlx5_nvmeotcp_add_tail_nonlinear(queue, skb, + org_frags, + org_nr_frags, + frag_index); + } + + mlx5e_nvmeotcp_put_queue(queue); + return skb; +} diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/nvmeotcp_rxtx.h b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/nvmeotcp_rxtx.h new file mode 100644 index 000000000000..bb2b074327ae --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/nvmeotcp_rxtx.h @@ -0,0 +1,26 @@ +// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB +// Copyright (c) 2020 Mellanox Technologies. + +#ifndef __MLX5E_NVMEOTCP_RXTX_H__ +#define __MLX5E_NVMEOTCP_RXTX_H__ + +#ifdef CONFIG_MLX5_EN_NVMEOTCP + +#include +#include "en.h" + +struct sk_buff* +mlx5e_nvmeotcp_handle_rx_skb(struct net_device *netdev, struct sk_buff *skb, + struct mlx5_cqe64 *cqe, u32 cqe_bcnt, bool linear); + +int mlx5_nvmeotcp_get_headlen(struct mlx5_cqe64 *cqe, u32 cqe_bcnt); +#else +int mlx5_nvmeotcp_get_headlen(struct mlx5_cqe64 *cqe, u32 cqe_bcnt) { return cqe_bcnt; } +struct sk_buff* +mlx5e_nvmeotcp_handle_rx_skb(struct net_device *netdev, struct sk_buff *skb, + struct mlx5_cqe64 *cqe, u32 cqe_bcnt, bool linear) +{ return skb; } + +#endif /* CONFIG_MLX5_EN_NVMEOTCP */ + +#endif /* __MLX5E_NVMEOTCP_RXTX_H__ */ diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c index 598d62366af2..2688396d21f8 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c @@ -48,6 +48,7 @@ #include "en_accel/ipsec_rxtx.h" #include "en_accel/tls_rxtx.h" #include "en_accel/nvmeotcp.h" +#include "en_accel/nvmeotcp_rxtx.h" #include "lib/clock.h" #include "en/xdp.h" #include "en/xsk/rx.h" @@ -57,9 +58,11 @@ static struct sk_buff * mlx5e_skb_from_cqe_mpwrq_linear(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi, + struct mlx5_cqe64 *cqe, u16 cqe_bcnt, u32 head_offset, u32 page_idx); static struct sk_buff * mlx5e_skb_from_cqe_mpwrq_nonlinear(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi, + struct mlx5_cqe64 *cqe, u16 cqe_bcnt, u32 head_offset, u32 page_idx); static void mlx5e_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe); static void mlx5e_handle_rx_cqe_mpwrq(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe); @@ -1076,6 +1079,10 @@ static inline void mlx5e_build_rx_skb(struct mlx5_cqe64 *cqe, if (unlikely(mlx5_ipsec_is_rx_flow(cqe))) mlx5e_ipsec_offload_handle_rx_skb(netdev, skb, cqe); +#if defined(CONFIG_TCP_DDP_CRC) && defined(CONFIG_MLX5_EN_NVMEOTCP) + skb->ddp_crc = cqe_is_nvmeotcp_crcvalid(cqe); +#endif + if (lro_num_seg > 1) { mlx5e_lro_update_hdr(skb, cqe, cqe_bcnt); skb_shinfo(skb)->gso_size = DIV_ROUND_UP(cqe_bcnt, lro_num_seg); @@ -1189,16 +1196,28 @@ mlx5e_skb_from_cqe_linear(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe, /* queue up for recycling/reuse */ page_ref_inc(di->page); +#if defined(CONFIG_TCP_DDP) && defined(CONFIG_MLX5_EN_NVMEOTCP) + if (cqe_is_nvmeotcp_zc_or_resync(cqe)) + skb = mlx5e_nvmeotcp_handle_rx_skb(rq->netdev, skb, cqe, + cqe_bcnt, true); +#endif + return skb; } +static u16 mlx5e_get_headlen_hint(struct mlx5_cqe64 *cqe, u32 cqe_bcnt) +{ + return min_t(u32, MLX5E_RX_MAX_HEAD, + mlx5_nvmeotcp_get_headlen(cqe, cqe_bcnt)); +} + static struct sk_buff * mlx5e_skb_from_cqe_nonlinear(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe, struct mlx5e_wqe_frag_info *wi, u32 cqe_bcnt) { struct mlx5e_rq_frag_info *frag_info = &rq->wqe.info.arr[0]; + u16 headlen = mlx5e_get_headlen_hint(cqe, cqe_bcnt); struct mlx5e_wqe_frag_info *head_wi = wi; - u16 headlen = min_t(u32, MLX5E_RX_MAX_HEAD, cqe_bcnt); u16 frag_headlen = headlen; u16 byte_cnt = cqe_bcnt - headlen; struct sk_buff *skb; @@ -1207,7 +1226,7 @@ mlx5e_skb_from_cqe_nonlinear(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe, * might spread among multiple pages. */ skb = napi_alloc_skb(rq->cq.napi, - ALIGN(MLX5E_RX_MAX_HEAD, sizeof(long))); + ALIGN(headlen, sizeof(long))); if (unlikely(!skb)) { rq->stats->buff_alloc_err++; return NULL; @@ -1233,6 +1252,12 @@ mlx5e_skb_from_cqe_nonlinear(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe, skb->tail += headlen; skb->len += headlen; +#if defined(CONFIG_TCP_DDP) && defined(CONFIG_MLX5_EN_NVMEOTCP) + if (cqe_is_nvmeotcp_zc_or_resync(cqe)) + skb = mlx5e_nvmeotcp_handle_rx_skb(rq->netdev, skb, cqe, + cqe_bcnt, false); +#endif + return skb; } @@ -1387,7 +1412,7 @@ static void mlx5e_handle_rx_cqe_mpwrq_rep(struct mlx5e_rq *rq, struct mlx5_cqe64 skb = INDIRECT_CALL_2(rq->mpwqe.skb_from_cqe_mpwrq, mlx5e_skb_from_cqe_mpwrq_linear, mlx5e_skb_from_cqe_mpwrq_nonlinear, - rq, wi, cqe_bcnt, head_offset, page_idx); + rq, wi, cqe, cqe_bcnt, head_offset, page_idx); if (!skb) goto mpwrq_cqe_out; @@ -1418,17 +1443,18 @@ const struct mlx5e_rx_handlers mlx5e_rx_handlers_rep = { static struct sk_buff * mlx5e_skb_from_cqe_mpwrq_nonlinear(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi, + struct mlx5_cqe64 *cqe, u16 cqe_bcnt, u32 head_offset, u32 page_idx) { - u16 headlen = min_t(u16, MLX5E_RX_MAX_HEAD, cqe_bcnt); struct mlx5e_dma_info *di = &wi->umr.dma_info[page_idx]; + u16 headlen = mlx5e_get_headlen_hint(cqe, cqe_bcnt); u32 frag_offset = head_offset + headlen; u32 byte_cnt = cqe_bcnt - headlen; struct mlx5e_dma_info *head_di = di; struct sk_buff *skb; skb = napi_alloc_skb(rq->cq.napi, - ALIGN(MLX5E_RX_MAX_HEAD, sizeof(long))); + ALIGN(headlen, sizeof(long))); if (unlikely(!skb)) { rq->stats->buff_alloc_err++; return NULL; @@ -1459,11 +1485,18 @@ mlx5e_skb_from_cqe_mpwrq_nonlinear(struct mlx5e_rq *rq, struct mlx5e_mpw_info *w skb->tail += headlen; skb->len += headlen; +#if defined(CONFIG_TCP_DDP) && defined(CONFIG_MLX5_EN_NVMEOTCP) + if (cqe_is_nvmeotcp_zc_or_resync(cqe)) + skb = mlx5e_nvmeotcp_handle_rx_skb(rq->netdev, skb, cqe, + cqe_bcnt, false); +#endif + return skb; } static struct sk_buff * mlx5e_skb_from_cqe_mpwrq_linear(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi, + struct mlx5_cqe64 *cqe, u16 cqe_bcnt, u32 head_offset, u32 page_idx) { struct mlx5e_dma_info *di = &wi->umr.dma_info[page_idx]; @@ -1505,6 +1538,12 @@ mlx5e_skb_from_cqe_mpwrq_linear(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi, /* queue up for recycling/reuse */ page_ref_inc(di->page); +#if defined(CONFIG_TCP_DDP) && defined(CONFIG_MLX5_EN_NVMEOTCP) + if (cqe_is_nvmeotcp_zc_or_resync(cqe)) + skb = mlx5e_nvmeotcp_handle_rx_skb(rq->netdev, skb, cqe, + cqe_bcnt, true); +#endif + return skb; } @@ -1543,7 +1582,7 @@ static void mlx5e_handle_rx_cqe_mpwrq(struct mlx5e_rq *rq, struct mlx5_cqe64 *cq skb = INDIRECT_CALL_2(rq->mpwqe.skb_from_cqe_mpwrq, mlx5e_skb_from_cqe_mpwrq_linear, mlx5e_skb_from_cqe_mpwrq_nonlinear, - rq, wi, cqe_bcnt, head_offset, page_idx); + rq, wi, cqe, cqe_bcnt, head_offset, page_idx); if (!skb) goto mpwrq_cqe_out;