From patchwork Fri Jun 14 06:39:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xuan Zhuo X-Patchwork-Id: 13697905 X-Patchwork-Delegate: kuba@kernel.org Received: from out30-119.freemail.mail.aliyun.com (out30-119.freemail.mail.aliyun.com [115.124.30.119]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5D4DE1487C9; Fri, 14 Jun 2024 06:39:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.30.119 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718347185; cv=none; b=hVrnvmQLUuI8Hg38rPIX1gCw4NbtA+8nbIOHNHZZfH+Ed/UkSy8xXOGEAkzmiHdvPMdxV77ghatUGxVJIgngx0NjO6SE/SIBBYJ1QB96pCFHnNXOTagDKSVe6zlCWWw6Y9eFabZVdQUuPTK/U4JZ7madcvVaNi9Ej8tqvZSntxQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718347185; c=relaxed/simple; bh=4seTsozVSv+ezpete5JyfgV166HQrZcU8nGvlj7gUss=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=HVotdssagK0mVdWZyFKI/ZOsa9AQce8mC5D8AaKKP0x+FTMBLogj35EqdRiM/UIu96l2S/xLo+p2bge4j+sNaHvIOsLGDvp0ZTALEipqNrkr06S1cYq7pWRu2SLMZ2UvCMTb0fmZHTQpr71PggvRLBG/SOghueoAj4jMmncoxso= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com; spf=pass smtp.mailfrom=linux.alibaba.com; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b=O9X0ZdiR; arc=none smtp.client-ip=115.124.30.119 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b="O9X0ZdiR" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1718347181; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=npQee9M15+Lo4pMMFfrdbZsJ16sd84cpsyzjvN2BTSw=; b=O9X0ZdiRqUN+Pu1Iy2SI557ZzOv8TlcPrCGXsqmKoa1otNxkHs9tJ17gEoVOcdEg3/isV3MlvuqaOovnk+13fn8s25BzYbKE9GUFOIpLvcMai/0lXN+2WY/ZrF/i7eZ4Cp9obM8LOTSKtkHBf5qiCvyv7ncfAZ5Hy7v3A16dBlc= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R181e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam033032014031;MF=xuanzhuo@linux.alibaba.com;NM=1;PH=DS;RN=15;SR=0;TI=SMTPD_---0W8QF6Rt_1718347179; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0W8QF6Rt_1718347179) by smtp.aliyun-inc.com; Fri, 14 Jun 2024 14:39:39 +0800 From: Xuan Zhuo To: netdev@vger.kernel.org Cc: "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?utf-8?q?Eugenio_P=C3=A9rez?= , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , virtualization@lists.linux.dev, bpf@vger.kernel.org Subject: [PATCH net-next v5 06/15] virtio_net: separate receive_buf Date: Fri, 14 Jun 2024 14:39:24 +0800 Message-Id: <20240614063933.108811-7-xuanzhuo@linux.alibaba.com> X-Mailer: git-send-email 2.32.0.3.g01195cf9f In-Reply-To: <20240614063933.108811-1-xuanzhuo@linux.alibaba.com> References: <20240614063933.108811-1-xuanzhuo@linux.alibaba.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Git-Hash: e008fb4a0943 X-Patchwork-Delegate: kuba@kernel.org This commit separates the function receive_buf(), then we wrap the logic of handling the skb to an independent function virtnet_receive_done(). The subsequent commit will reuse it. Signed-off-by: Xuan Zhuo Acked-by: Jason Wang --- drivers/net/virtio_net.c | 56 +++++++++++++++++++++++----------------- 1 file changed, 32 insertions(+), 24 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 8c51947abce9..161694957065 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -1935,32 +1935,11 @@ static void virtio_skb_set_hash(const struct virtio_net_hdr_v1_hash *hdr_hash, skb_set_hash(skb, __le32_to_cpu(hdr_hash->hash_value), rss_hash_type); } -static void receive_buf(struct virtnet_info *vi, struct receive_queue *rq, - void *buf, unsigned int len, void **ctx, - unsigned int *xdp_xmit, - struct virtnet_rq_stats *stats) +static void virtnet_receive_done(struct virtnet_info *vi, struct receive_queue *rq, + struct sk_buff *skb) { - struct net_device *dev = vi->dev; - struct sk_buff *skb; struct virtio_net_common_hdr *hdr; - - if (unlikely(len < vi->hdr_len + ETH_HLEN)) { - pr_debug("%s: short packet %i\n", dev->name, len); - DEV_STATS_INC(dev, rx_length_errors); - virtnet_rq_free_buf(vi, rq, buf); - return; - } - - if (vi->mergeable_rx_bufs) - skb = receive_mergeable(dev, vi, rq, buf, ctx, len, xdp_xmit, - stats); - else if (vi->big_packets) - skb = receive_big(dev, vi, rq, buf, len, stats); - else - skb = receive_small(dev, vi, rq, buf, ctx, len, xdp_xmit, stats); - - if (unlikely(!skb)) - return; + struct net_device *dev = vi->dev; hdr = skb_vnet_common_hdr(skb); if (dev->features & NETIF_F_RXHASH && vi->has_rss_hash_report) @@ -1990,6 +1969,35 @@ static void receive_buf(struct virtnet_info *vi, struct receive_queue *rq, dev_kfree_skb(skb); } +static void receive_buf(struct virtnet_info *vi, struct receive_queue *rq, + void *buf, unsigned int len, void **ctx, + unsigned int *xdp_xmit, + struct virtnet_rq_stats *stats) +{ + struct net_device *dev = vi->dev; + struct sk_buff *skb; + + if (unlikely(len < vi->hdr_len + ETH_HLEN)) { + pr_debug("%s: short packet %i\n", dev->name, len); + DEV_STATS_INC(dev, rx_length_errors); + virtnet_rq_free_buf(vi, rq, buf); + return; + } + + if (vi->mergeable_rx_bufs) + skb = receive_mergeable(dev, vi, rq, buf, ctx, len, xdp_xmit, + stats); + else if (vi->big_packets) + skb = receive_big(dev, vi, rq, buf, len, stats); + else + skb = receive_small(dev, vi, rq, buf, ctx, len, xdp_xmit, stats); + + if (unlikely(!skb)) + return; + + virtnet_receive_done(vi, rq, skb); +} + /* Unlike mergeable buffers, all buffers are allocated to the * same size, except for the headroom. For this reason we do * not need to use mergeable_len_to_ctx here - it is enough