From 0ea5778f066ea5c5e73246a4c11f0773edc4c45d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= Date: Thu, 17 Feb 2022 18:50:29 +0100 Subject: [PATCH] virtio-net: Unlimit tx queue size if peer is vdpa MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The code used to limit the maximum size of tx queue for others backends than vhost_user since the introduction of configurable tx queue size in 9b02e1618cf2 ("virtio-net: enable configurable tx queue size"). As vhost_user, vhost_vdpa devices should deal with memory region crosses already, so let's use the full tx size. Signed-off-by: Eugenio Pérez Message-Id: <20220217175029.2517071-1-eperezma@redhat.com> Acked-by: Jason Wang Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/net/virtio-net.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index cf8ab0f8af..b02a0632df 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -628,17 +628,20 @@ static int virtio_net_max_tx_queue_size(VirtIONet *n) NetClientState *peer = n->nic_conf.peers.ncs[0]; /* - * Backends other than vhost-user don't support max queue size. + * Backends other than vhost-user or vhost-vdpa don't support max queue + * size. */ if (!peer) { return VIRTIO_NET_TX_QUEUE_DEFAULT_SIZE; } - if (peer->info->type != NET_CLIENT_DRIVER_VHOST_USER) { + switch(peer->info->type) { + case NET_CLIENT_DRIVER_VHOST_USER: + case NET_CLIENT_DRIVER_VHOST_VDPA: + return VIRTQUEUE_MAX_SIZE; + default: return VIRTIO_NET_TX_QUEUE_DEFAULT_SIZE; - } - - return VIRTQUEUE_MAX_SIZE; + }; } static int peer_attach(VirtIONet *n, int index)