From patchwork Tue Jun 18 07:56:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xuan Zhuo X-Patchwork-Id: 13701932 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 C475219D080; Tue, 18 Jun 2024 07:56:49 +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=1718697411; cv=none; b=kMQfI2JMCeCB7szLA2haF0uh8Adh3V/o5+NiJ5dkLgWAWdm6C9hBm5T+wdFY+HoNIOZp/ETGGuGh26fV9s9A+80YjEdaRhh+Y7RdcUyhagV/7hFLh4d7zvRUKc7rIv3akeXvJeFWyCXO1e+MJZXDpzbMsj6bvcUhKwHuugBS8gs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718697411; c=relaxed/simple; bh=wC81uKyMU8FVabNLSZLUnf7sDbBjual2M4gAQRMfykE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=dgNipxjZvOhEUwZgJ8LD+JrxPdYqWXMaMN37d18XbffrO1eDedIPNXB/7uvr2px8+Y0+clxiRRmKaHiwtimPTIwJLdBt+XHDEKouqjOn2sMbphTXDIoz0g4VVkrzypPaNYElV8idn3ml6hmYdDLMIQer1Zq/UGgqobMNMuEzhbE= 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=QAUdZH34; 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="QAUdZH34" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1718697407; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=mmxFIgim3ZhOhDUZPVGmbzDuUS95UwiWuDWJu7BFVN4=; b=QAUdZH34XkvVW6UIG/bxjosx5058htnW3hJV4fwsG0FIb1sTRsl/dsQzNA0stqP1tw9YnQVW/D7EZx9tGRnWnVc+mVLzJHmZ6VpocKX9TiRRS7c5SzI+YV2JsJ5ADL6o3UQwhHzi1y2CHEK3OfBeUBs8G/MWPGP5X8vBssykEwA= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R531e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam033037067109;MF=xuanzhuo@linux.alibaba.com;NM=1;PH=DS;RN=15;SR=0;TI=SMTPD_---0W8jRu9P_1718697406; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0W8jRu9P_1718697406) by smtp.aliyun-inc.com; Tue, 18 Jun 2024 15:56:47 +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 v6 03/10] virtio_net: separate receive_buf Date: Tue, 18 Jun 2024 15:56:36 +0800 Message-Id: <20240618075643.24867-4-xuanzhuo@linux.alibaba.com> X-Mailer: git-send-email 2.32.0.3.g01195cf9f In-Reply-To: <20240618075643.24867-1-xuanzhuo@linux.alibaba.com> References: <20240618075643.24867-1-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: 8baa0af3684b 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 1ac5f472d4ef..59fcaeb6ea81 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