From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by dpdk.org (Postfix) with ESMTP id C2BD2CF68 for ; Sun, 12 Mar 2017 17:34:18 +0100 (CET) Received: from smtp.corp.redhat.com (int-mx16.intmail.prod.int.phx2.redhat.com [10.5.11.28]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 26C43624AB; Sun, 12 Mar 2017 16:34:19 +0000 (UTC) Received: from max-t460s.redhat.com (ovpn-116-39.ams2.redhat.com [10.36.116.39]) by smtp.corp.redhat.com (Postfix) with ESMTP id 256432D5C4; Sun, 12 Mar 2017 16:34:15 +0000 (UTC) From: Maxime Coquelin To: aconole@redhat.com, sodey@sonusnet.com, yuanhan.liu@linux.intel.com, jianfeng.tan@intel.com, thomas.monjalon@6wind.com, dev@dpdk.org Cc: Maxime Coquelin Date: Sun, 12 Mar 2017 17:33:58 +0100 Message-Id: <20170312163406.17714-2-maxime.coquelin@redhat.com> In-Reply-To: <20170312163406.17714-1-maxime.coquelin@redhat.com> References: <20170213142820.8964-1-maxime.coquelin@redhat.com> <20170312163406.17714-1-maxime.coquelin@redhat.com> X-Scanned-By: MIMEDefang 2.74 on 10.5.11.28 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Sun, 12 Mar 2017 16:34:19 +0000 (UTC) Subject: [dpdk-dev] [PATCH v3 1/9] vhost: Enable VIRTIO_NET_F_MTU feature X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 12 Mar 2017 16:34:19 -0000 This patch enables the new VIRTIO_NET_F_MTU feature, which makes possible for the host to advise the guest with its maximum supported MTU. MTU value is set via QEMU parameters, either via Libvirt XML, or directly in virtio-net device command line arguments. Signed-off-by: Maxime Coquelin --- lib/librte_vhost/vhost.c | 3 ++- lib/librte_vhost/vhost.h | 6 +++++- 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c index e415093..3974087 100644 --- a/lib/librte_vhost/vhost.c +++ b/lib/librte_vhost/vhost.c @@ -66,7 +66,8 @@ (1ULL << VIRTIO_NET_F_GUEST_CSUM) | \ (1ULL << VIRTIO_NET_F_GUEST_TSO4) | \ (1ULL << VIRTIO_NET_F_GUEST_TSO6) | \ - (1ULL << VIRTIO_RING_F_INDIRECT_DESC)) + (1ULL << VIRTIO_RING_F_INDIRECT_DESC) | \ + (1ULL << VIRTIO_NET_F_MTU)) uint64_t VHOST_FEATURES = VHOST_SUPPORTED_FEATURES; diff --git a/lib/librte_vhost/vhost.h b/lib/librte_vhost/vhost.h index 22564f1..6a57bb3 100644 --- a/lib/librte_vhost/vhost.h +++ b/lib/librte_vhost/vhost.h @@ -110,11 +110,15 @@ struct vhost_virtqueue { uint16_t shadow_used_idx; } __rte_cache_aligned; -/* Old kernels have no such macro defined */ +/* Old kernels have no such macros defined */ #ifndef VIRTIO_NET_F_GUEST_ANNOUNCE #define VIRTIO_NET_F_GUEST_ANNOUNCE 21 #endif +#ifndef VIRTIO_NET_F_MTU + #define VIRTIO_NET_F_MTU 3 +#endif + /* * Make an extra wrapper for VIRTIO_NET_F_MQ and -- 2.9.3