From 466adb0e641f5c918cbea84e962ae9352f440663 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= Date: Thu, 11 Aug 2022 14:28:47 +0200 Subject: [PATCH 22/29] vdpa: Add vhost_vdpa_net_load_mq MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit RH-Author: Laurent Vivier RH-MergeRequest: 117: vDPA SVQ Multiqueue support RH-Jira: RHELX-57 RH-Acked-by: Jason Wang RH-Acked-by: Cindy Lu RH-Acked-by: Eugenio Pérez RH-Commit: [22/25] 01e861ad39d6b8e15870296f508726565101213b (redhat/centos-stream/src/qemu-kvm) Upstream: Not merged yet Same way as with the MAC, restore the expected number of queues at device's start. Signed-off-by: Eugenio Pérez Signed-off-by: Laurent Vivier --- net/vhost-vdpa.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index e799e744cd..3950e4f25d 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -400,6 +400,28 @@ static int vhost_vdpa_net_load_mac(VhostVDPAState *s, const VirtIONet *n) return 0; } +static int vhost_vdpa_net_load_mq(VhostVDPAState *s, + const VirtIONet *n) +{ + struct virtio_net_ctrl_mq mq; + uint64_t features = n->parent_obj.guest_features; + ssize_t dev_written; + + if (!(features & BIT_ULL(VIRTIO_NET_F_MQ))) { + return 0; + } + + mq.virtqueue_pairs = cpu_to_le16(n->curr_queue_pairs); + dev_written = vhost_vdpa_net_load_cmd(s, VIRTIO_NET_CTRL_MQ, + VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET, &mq, + sizeof(mq)); + if (unlikely(dev_written < 0)) { + return dev_written; + } + + return *s->status != VIRTIO_NET_OK; +} + static int vhost_vdpa_net_load(NetClientState *nc) { VhostVDPAState *s = DO_UPCAST(VhostVDPAState, nc, nc); @@ -418,6 +440,10 @@ static int vhost_vdpa_net_load(NetClientState *nc) if (unlikely(r < 0)) { return r; } + r = vhost_vdpa_net_load_mq(s, n); + if (unlikely(r)) { + return r; + } return 0; } -- 2.31.1