From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sridhar Samudrala Subject: [PATCH net-next 1/2] virtio_net: Introduce VIRTIO_NET_F_MASTER feature bit Date: Tue, 2 Jan 2018 16:35:37 -0800 Message-ID: <1514939738-22423-2-git-send-email-sridhar.samudrala@intel.com> References: <1514939738-22423-1-git-send-email-sridhar.samudrala@intel.com> To: mst@redhat.com, stephen@networkplumber.org, netdev@vger.kernel.org, virtualization@lists.linux-foundation.org, virtio-dev@lists.oasis-open.org, jesse.brandeburg@intel.com, sridhar.samudrala@intel.com Return-path: Sender: List-Post: List-Help: List-Unsubscribe: List-Subscribe: In-Reply-To: <1514939738-22423-1-git-send-email-sridhar.samudrala@intel.com> List-Id: netdev.vger.kernel.org This feature bit can be used by hypervisor to indicate virtio_net device to act as a master for a directly attached passthru device with the same MAC address. Signed-off-by: Sridhar Samudrala --- drivers/net/virtio_net.c | 3 ++- include/uapi/linux/virtio_net.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 6fb7b658a6cc..46844a1d9a62 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -2796,7 +2796,8 @@ static struct virtio_device_id id_table[] = { VIRTIO_NET_F_CTRL_RX, VIRTIO_NET_F_CTRL_VLAN, \ VIRTIO_NET_F_GUEST_ANNOUNCE, VIRTIO_NET_F_MQ, \ VIRTIO_NET_F_CTRL_MAC_ADDR, \ - VIRTIO_NET_F_MTU, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS + VIRTIO_NET_F_MTU, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS, \ + VIRTIO_NET_F_MASTER static unsigned int features[] = { VIRTNET_FEATURES, diff --git a/include/uapi/linux/virtio_net.h b/include/uapi/linux/virtio_net.h index fc353b518288..a9b4e0836786 100644 --- a/include/uapi/linux/virtio_net.h +++ b/include/uapi/linux/virtio_net.h @@ -56,6 +56,7 @@ #define VIRTIO_NET_F_MQ 22 /* Device supports Receive Flow * Steering */ #define VIRTIO_NET_F_CTRL_MAC_ADDR 23 /* Set MAC address */ +#define VIRTIO_NET_F_MASTER 62 /* act as master for a VF device */ #ifndef VIRTIO_NET_NO_LEGACY #define VIRTIO_NET_F_GSO 6 /* Host handles pkts w/ any GSO type */ -- 2.14.3