From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-x64a.google.com (mail-pl1-x64a.google.com [IPv6:2607:f8b0:4864:20::64a]) by mail.toke.dk (Postfix) with ESMTPS id 453739C45AE for ; Mon, 21 Nov 2022 19:26:06 +0100 (CET) Authentication-Results: mail.toke.dk; dkim=pass (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256 header.s=20210112 header.b=n5EeXpIo Received: by mail-pl1-x64a.google.com with SMTP id t3-20020a170902e84300b00186ab03043dso9944688plg.20 for ; Mon, 21 Nov 2022 10:26:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=mZqP3yNBrpAwk4TJsSnLiwPq87Wubt3mJUNd7RioCb8=; b=n5EeXpIol277FfH8pVgfNkp0LXATkS74tOOiofe8A4P24VMW2KShluIJzFmIxha/IL xqncVwIdIQIiRDzOvq88kcaINR78SbKb5sTbNuKg2OOjquU0O+Ml9tmuaPXC6oWuRmNe q9J4g1w5mKmX5iZa/VdZdy+y/4X/ViKVDVyaWRxTF4ZRwIE5XJZVbIhOx+Q+utCp0plH nM9eYGUgJsbKUqqZPucB8Q9vToTJb581zJu/PbSHJP3tx8u/7HkqwrL3fiEarhdZzTZg mPOFcHrmD4Nx+0Aqv9U9DBGNgP9ETuJq7uLW1AOsGzM5ckXe9G70nRGmiBEl70XGC3cQ TwGw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=mZqP3yNBrpAwk4TJsSnLiwPq87Wubt3mJUNd7RioCb8=; b=VfeSN+Ni9S9mLyQkBAInQyiBN4VZxCiT5k9cCNNPsoAbCd9uSWGspUTCp+fHL4/ePC 1FBkZwsv4rWQJrujrSXLCaCXeBTdUTE03sH46tlq10H1Gshle26K5GSuuhHsWlGOezia EO48eNRcIrUoCHM1OxXkT+PPoIOJ7kNGijiF2E1YKI2rw6M0rWqaLYgBK6njgsFX2PjV quV0G105qxkL4omA0z+9HJNpZq+ZYGpMCuzWUH3Lxjqs3pyVCaIVbHgb5i5RIf0vOzRh KHmfJ/WKX8fMofKzkmoCszl6GmsN2KOqpAJe2Ap0HErZeTVJE2o+XveRcUoIsUuLMmvK lMOA== X-Gm-Message-State: ANoB5pnmw8QhL4N3qoIJ3shto7oCOcmJKcEU1lNuBP6Y0cq0vqDYsFO/ sqMf5T+vR+vJlxHHXkM3yTh1aSI= X-Google-Smtp-Source: AA0mqf4IdK+Ed1+mNhKMzH5S4cC4/t5Tc7FBAGO03ycP1MeB/RalnXA5jDvqks2Bs1nqsSDs+wEWRv0= X-Received: from sdf.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5935]) (user=sdf job=sendgmr) by 2002:aa7:880c:0:b0:573:3397:f804 with SMTP id c12-20020aa7880c000000b005733397f804mr4367415pfo.86.1669055164507; Mon, 21 Nov 2022 10:26:04 -0800 (PST) Date: Mon, 21 Nov 2022 10:25:50 -0800 In-Reply-To: <20221121182552.2152891-1-sdf@google.com> Mime-Version: 1.0 References: <20221121182552.2152891-1-sdf@google.com> X-Mailer: git-send-email 2.38.1.584.g0f3c55d4c2-goog Message-ID: <20221121182552.2152891-7-sdf@google.com> From: Stanislav Fomichev To: bpf@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Message-ID-Hash: GVYWUDG6GNNTX66X46YWT3NYFT4HSMIP X-Message-ID-Hash: GVYWUDG6GNNTX66X46YWT3NYFT4HSMIP X-MailFrom: 3vMJ7YwMKCVMDy019916z.x97IyA-238EDIyA-AC94zxE.8zE@flex--sdf.bounces.google.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, martin.lau@linux.dev, song@kernel.org, yhs@fb.com, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com, haoluo@google.com, jolsa@kernel.org, Tariq Toukan , David Ahern , Jakub Kicinski , Willem de Bruijn , Jesper Dangaard Brouer , Anatoly Burakov , Alexander Lobakin , Magnus Karlsson , Maryam Tahhan , xdp-hints@xdp-project.net, netdev@vger.kernel.org X-Mailman-Version: 3.3.7 Precedence: list Subject: [xdp-hints] [PATCH bpf-next v2 6/8] mlx4: Introduce mlx4_xdp_buff wrapper for xdp_buff List-Id: XDP hardware hints design discussion Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: No functional changes. Boilerplate to allow stuffing more data after xdp_buff. Cc: Tariq Toukan Cc: John Fastabend Cc: David Ahern Cc: Martin KaFai Lau Cc: Jakub Kicinski Cc: Willem de Bruijn Cc: Jesper Dangaard Brouer Cc: Anatoly Burakov Cc: Alexander Lobakin Cc: Magnus Karlsson Cc: Maryam Tahhan Cc: xdp-hints@xdp-project.net Cc: netdev@vger.kernel.org Signed-off-by: Stanislav Fomichev --- drivers/net/ethernet/mellanox/mlx4/en_rx.c | 26 +++++++++++++--------- 1 file changed, 15 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c index 8f762fc170b3..467356633172 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c @@ -661,17 +661,21 @@ static int check_csum(struct mlx4_cqe *cqe, struct sk_buff *skb, void *va, #define MLX4_CQE_STATUS_IP_ANY (MLX4_CQE_STATUS_IPV4) #endif +struct mlx4_xdp_buff { + struct xdp_buff xdp; +}; + int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int budget) { struct mlx4_en_priv *priv = netdev_priv(dev); int factor = priv->cqe_factor; struct mlx4_en_rx_ring *ring; + struct mlx4_xdp_buff mxbuf; struct bpf_prog *xdp_prog; int cq_ring = cq->ring; bool doorbell_pending; bool xdp_redir_flush; struct mlx4_cqe *cqe; - struct xdp_buff xdp; int polled = 0; int index; @@ -681,7 +685,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud ring = priv->rx_ring[cq_ring]; xdp_prog = rcu_dereference_bh(ring->xdp_prog); - xdp_init_buff(&xdp, priv->frag_info[0].frag_stride, &ring->xdp_rxq); + xdp_init_buff(&mxbuf.xdp, priv->frag_info[0].frag_stride, &ring->xdp_rxq); doorbell_pending = false; xdp_redir_flush = false; @@ -776,24 +780,24 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud priv->frag_info[0].frag_size, DMA_FROM_DEVICE); - xdp_prepare_buff(&xdp, va - frags[0].page_offset, + xdp_prepare_buff(&mxbuf.xdp, va - frags[0].page_offset, frags[0].page_offset, length, false); - orig_data = xdp.data; + orig_data = mxbuf.xdp.data; - act = bpf_prog_run_xdp(xdp_prog, &xdp); + act = bpf_prog_run_xdp(xdp_prog, &mxbuf.xdp); - length = xdp.data_end - xdp.data; - if (xdp.data != orig_data) { - frags[0].page_offset = xdp.data - - xdp.data_hard_start; - va = xdp.data; + length = mxbuf.xdp.data_end - mxbuf.xdp.data; + if (mxbuf.xdp.data != orig_data) { + frags[0].page_offset = mxbuf.xdp.data - + mxbuf.xdp.data_hard_start; + va = mxbuf.xdp.data; } switch (act) { case XDP_PASS: break; case XDP_REDIRECT: - if (likely(!xdp_do_redirect(dev, &xdp, xdp_prog))) { + if (likely(!xdp_do_redirect(dev, &mxbuf.xdp, xdp_prog))) { ring->xdp_redirect++; xdp_redir_flush = true; frags[0].page = NULL; -- 2.38.1.584.g0f3c55d4c2-goog