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[82.81.31.23]) by smtp.gmail.com with ESMTPSA id i10sm19790175wrw.51.2020.06.07.07.11.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 07 Jun 2020 07:11:50 -0700 (PDT) Date: Sun, 7 Jun 2020 10:11:49 -0400 From: "Michael S. Tsirkin" To: linux-kernel@vger.kernel.org Cc: kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, Jason Wang , eperezma@redhat.com, Stefan Hajnoczi , Stefano Garzarella Subject: [PATCH RFC v5 12/13] vhost/vsock: switch to the buf API Message-ID: <20200607141057.704085-13-mst@redhat.com> References: <20200607141057.704085-1-mst@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200607141057.704085-1-mst@redhat.com> X-Mailer: git-send-email 2.24.1.751.gd10ce2899c X-Mutt-Fcc: =sent Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org A straight-forward conversion. Signed-off-by: Michael S. Tsirkin Reviewed-by: Stefan Hajnoczi Reviewed-by: Stefano Garzarella Tested-by: Stefano Garzarella --- drivers/vhost/vsock.c | 30 ++++++++++++++++++------------ 1 file changed, 18 insertions(+), 12 deletions(-) diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c index a483cec31d5c..61c6d3dd2ae3 100644 --- a/drivers/vhost/vsock.c +++ b/drivers/vhost/vsock.c @@ -103,7 +103,8 @@ vhost_transport_do_send_pkt(struct vhost_vsock *vsock, unsigned out, in; size_t nbytes; size_t iov_len, payload_len; - int head; + struct vhost_buf buf; + int ret; spin_lock_bh(&vsock->send_pkt_list_lock); if (list_empty(&vsock->send_pkt_list)) { @@ -117,16 +118,17 @@ vhost_transport_do_send_pkt(struct vhost_vsock *vsock, list_del_init(&pkt->list); spin_unlock_bh(&vsock->send_pkt_list_lock); - head = vhost_get_vq_desc(vq, vq->iov, ARRAY_SIZE(vq->iov), - &out, &in, NULL, NULL); - if (head < 0) { + ret = vhost_get_avail_buf(vq, &buf, + vq->iov, ARRAY_SIZE(vq->iov), + &out, &in, NULL, NULL); + if (ret < 0) { spin_lock_bh(&vsock->send_pkt_list_lock); list_add(&pkt->list, &vsock->send_pkt_list); spin_unlock_bh(&vsock->send_pkt_list_lock); break; } - if (head == vq->num) { + if (!ret) { spin_lock_bh(&vsock->send_pkt_list_lock); list_add(&pkt->list, &vsock->send_pkt_list); spin_unlock_bh(&vsock->send_pkt_list_lock); @@ -186,7 +188,8 @@ vhost_transport_do_send_pkt(struct vhost_vsock *vsock, */ virtio_transport_deliver_tap_pkt(pkt); - vhost_add_used(vq, head, sizeof(pkt->hdr) + payload_len); + buf.in_len = sizeof(pkt->hdr) + payload_len; + vhost_put_used_buf(vq, &buf); added = true; pkt->off += payload_len; @@ -440,7 +443,8 @@ static void vhost_vsock_handle_tx_kick(struct vhost_work *work) struct vhost_vsock *vsock = container_of(vq->dev, struct vhost_vsock, dev); struct virtio_vsock_pkt *pkt; - int head, pkts = 0, total_len = 0; + int ret, pkts = 0, total_len = 0; + struct vhost_buf buf; unsigned int out, in; bool added = false; @@ -461,12 +465,13 @@ static void vhost_vsock_handle_tx_kick(struct vhost_work *work) goto no_more_replies; } - head = vhost_get_vq_desc(vq, vq->iov, ARRAY_SIZE(vq->iov), - &out, &in, NULL, NULL); - if (head < 0) + ret = vhost_get_avail_buf(vq, &buf, + vq->iov, ARRAY_SIZE(vq->iov), + &out, &in, NULL, NULL); + if (ret < 0) break; - if (head == vq->num) { + if (!ret) { if (unlikely(vhost_enable_notify(&vsock->dev, vq))) { vhost_disable_notify(&vsock->dev, vq); continue; @@ -494,7 +499,8 @@ static void vhost_vsock_handle_tx_kick(struct vhost_work *work) virtio_transport_free_pkt(pkt); len += sizeof(pkt->hdr); - vhost_add_used(vq, head, len); + buf.in_len = len; + vhost_put_used_buf(vq, &buf); total_len += len; added = true; } while(likely(!vhost_exceeds_weight(vq, ++pkts, total_len)));