From patchwork Mon Oct 16 12:00:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xuan Zhuo X-Patchwork-Id: 13423146 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 9C5C028688; Mon, 16 Oct 2023 12:00:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=none Received: from out30-99.freemail.mail.aliyun.com (out30-99.freemail.mail.aliyun.com [115.124.30.99]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 15071E1; Mon, 16 Oct 2023 05:00:52 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R131e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018045192;MF=xuanzhuo@linux.alibaba.com;NM=1;PH=DS;RN=14;SR=0;TI=SMTPD_---0VuHskBZ_1697457649; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0VuHskBZ_1697457649) by smtp.aliyun-inc.com; Mon, 16 Oct 2023 20:00:49 +0800 From: Xuan Zhuo To: netdev@vger.kernel.org Cc: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , virtualization@lists.linux-foundation.org, bpf@vger.kernel.org Subject: [PATCH net-next v1 13/19] virtio_net: xsk: tx: virtnet_free_old_xmit() distinguishes xsk buffer Date: Mon, 16 Oct 2023 20:00:27 +0800 Message-Id: <20231016120033.26933-14-xuanzhuo@linux.alibaba.com> X-Mailer: git-send-email 2.32.0.3.g01195cf9f In-Reply-To: <20231016120033.26933-1-xuanzhuo@linux.alibaba.com> References: <20231016120033.26933-1-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: 9790cc452aab X-Spam-Status: No, score=-9.9 required=5.0 tests=BAYES_00, ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H2, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_IN_DEF_SPF_WL autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org virtnet_free_old_xmit distinguishes three type ptr(skb, xdp frame, xsk buffer) by the last two types bits. Signed-off-by: Xuan Zhuo --- drivers/net/virtio/virtio_net.h | 16 ++++++++++++++-- drivers/net/virtio/xsk.h | 5 +++++ 2 files changed, 19 insertions(+), 2 deletions(-) diff --git a/drivers/net/virtio/virtio_net.h b/drivers/net/virtio/virtio_net.h index 7c72a8bb1813..d4e620a084f4 100644 --- a/drivers/net/virtio/virtio_net.h +++ b/drivers/net/virtio/virtio_net.h @@ -243,6 +243,11 @@ struct virtnet_info { #include "xsk.h" +static inline bool virtnet_is_skb_ptr(void *ptr) +{ + return !((unsigned long)ptr & VIRTIO_XMIT_DATA_MASK); +} + static inline bool virtnet_is_xdp_frame(void *ptr) { return (unsigned long)ptr & VIRTIO_XDP_FLAG; @@ -279,11 +284,12 @@ static inline void *virtnet_sq_unmap(struct virtnet_sq *sq, void *data) static inline void virtnet_free_old_xmit(struct virtnet_sq *sq, bool in_napi, struct virtnet_sq_stats *stats) { + unsigned int xsknum = 0; unsigned int len; void *ptr; while ((ptr = virtqueue_get_buf(sq->vq, &len)) != NULL) { - if (!virtnet_is_xdp_frame(ptr)) { + if (virtnet_is_skb_ptr(ptr)) { struct sk_buff *skb; if (sq->do_dma) @@ -295,7 +301,7 @@ static inline void virtnet_free_old_xmit(struct virtnet_sq *sq, bool in_napi, stats->bytes += skb->len; napi_consume_skb(skb, in_napi); - } else { + } else if (virtnet_is_xdp_frame(ptr)) { struct xdp_frame *frame; if (sq->do_dma) @@ -305,9 +311,15 @@ static inline void virtnet_free_old_xmit(struct virtnet_sq *sq, bool in_napi, stats->bytes += xdp_get_frame_len(frame); xdp_return_frame(frame); + } else { + stats->bytes += virtnet_ptr_to_xsk(ptr); + ++xsknum; } stats->packets++; } + + if (xsknum) + xsk_tx_completed(sq->xsk.pool, xsknum); } static inline void virtnet_vq_napi_schedule(struct napi_struct *napi, diff --git a/drivers/net/virtio/xsk.h b/drivers/net/virtio/xsk.h index 1bd19dcda649..7ebc9bda7aee 100644 --- a/drivers/net/virtio/xsk.h +++ b/drivers/net/virtio/xsk.h @@ -14,6 +14,11 @@ static inline void *virtnet_xsk_to_ptr(u32 len) return (void *)(p | VIRTIO_XSK_FLAG); } +static inline u32 virtnet_ptr_to_xsk(void *ptr) +{ + return ((unsigned long)ptr) >> VIRTIO_XSK_FLAG_OFFSET; +} + int virtnet_xsk_pool_setup(struct net_device *dev, struct netdev_bpf *xdp); bool virtnet_xsk_xmit(struct virtnet_sq *sq, struct xsk_buff_pool *pool, int budget);