From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37690) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c7UhJ-0004f5-MI for qemu-devel@nongnu.org; Thu, 17 Nov 2016 16:58:22 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c7UhI-0007mr-Ui for qemu-devel@nongnu.org; Thu, 17 Nov 2016 16:58:21 -0500 Received: from mx1.redhat.com ([209.132.183.28]:56070) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1c7UhI-0007mV-Pd for qemu-devel@nongnu.org; Thu, 17 Nov 2016 16:58:20 -0500 From: Maxime Coquelin Date: Thu, 17 Nov 2016 22:58:06 +0100 Message-Id: <1479419887-10515-3-git-send-email-maxime.coquelin@redhat.com> In-Reply-To: <1479419887-10515-1-git-send-email-maxime.coquelin@redhat.com> References: <1479419887-10515-1-git-send-email-maxime.coquelin@redhat.com> Subject: [Qemu-devel] [RFC v2 2/3] vhost-net: Add new MTU feature support List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: mst@redhat.com, aconole@redhat.com, pbonzini@redhat.com, qemu-devel@nongnu.org Cc: jasowang@redhat.com, yuanhan.liu@linux.intel.com, Maxime Coquelin If VHOST_USER_F_MTU feature is negociated, vhost-net makes the advised MTU available to virtio-net through a vhost_net_get_mtu() call. Cc: Michael S. Tsirkin Cc: Aaron Conole Signed-off-by: Maxime Coquelin --- hw/net/vhost_net.c | 11 +++++++++++ include/net/vhost_net.h | 2 ++ 2 files changed, 13 insertions(+) diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c index f2d49ad..21057d6 100644 --- a/hw/net/vhost_net.c +++ b/hw/net/vhost_net.c @@ -74,6 +74,7 @@ static const int user_feature_bits[] = { VIRTIO_NET_F_HOST_ECN, VIRTIO_NET_F_HOST_UFO, VIRTIO_NET_F_MRG_RXBUF, + VIRTIO_NET_F_MTU, /* This bit implies RARP isn't sent by QEMU out of band */ VIRTIO_NET_F_GUEST_ANNOUNCE, @@ -435,6 +436,11 @@ int vhost_set_vring_enable(NetClientState *nc, int enable) return 0; } +uint64_t vhost_net_get_mtu(struct vhost_net *net) +{ + return net->dev.mtu; +} + #else uint64_t vhost_net_get_max_queues(VHostNetState *net) { @@ -501,4 +507,9 @@ int vhost_set_vring_enable(NetClientState *nc, int enable) { return 0; } + +uint64_t vhost_net_get_mtu(struct vhost_net *net) +{ + return 0; +} #endif diff --git a/include/net/vhost_net.h b/include/net/vhost_net.h index 5a08eff..37de17b 100644 --- a/include/net/vhost_net.h +++ b/include/net/vhost_net.h @@ -35,4 +35,6 @@ int vhost_set_vring_enable(NetClientState * nc, int enable); uint64_t vhost_net_get_acked_features(VHostNetState *net); +uint64_t vhost_net_get_mtu(struct vhost_net *net); + #endif -- 2.7.4