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Message-Id: <1527180917-39737-5-git-send-email-sridhar.samudrala@intel.com>
Date: Thu, 24 May 2018 09:55:16 -0700
From: Sridhar Samudrala <sridhar.samudrala@...el.com>
To: mst@...hat.com, stephen@...workplumber.org, davem@...emloft.net,
netdev@...r.kernel.org, virtualization@...ts.linux-foundation.org,
virtio-dev@...ts.oasis-open.org, jesse.brandeburg@...el.com,
alexander.h.duyck@...el.com, kubakici@...pl,
sridhar.samudrala@...el.com, jasowang@...hat.com,
loseweigh@...il.com, jiri@...nulli.us, aaron.f.brown@...el.com,
anjali.singhai@...el.com
Subject: [PATCH net-next v12 4/5] virtio_net: Introduce VIRTIO_NET_F_STANDBY feature bit
This feature bit can be used by hypervisor to indicate virtio_net device to
act as a standby for another device with the same MAC address.
VIRTIO_NET_F_STANDBY is defined as bit 62 as it is a device feature bit.
Signed-off-by: Sridhar Samudrala <sridhar.samudrala@...el.com>
---
drivers/net/virtio_net.c | 2 +-
include/uapi/linux/virtio_net.h | 3 +++
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index f34794a76c4d..213fddc70fd0 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -2999,7 +2999,7 @@ static struct virtio_device_id id_table[] = {
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_SPEED_DUPLEX
+ VIRTIO_NET_F_SPEED_DUPLEX, VIRTIO_NET_F_STANDBY
static unsigned int features[] = {
VIRTNET_FEATURES,
diff --git a/include/uapi/linux/virtio_net.h b/include/uapi/linux/virtio_net.h
index 5de6ed37695b..a3715a3224c1 100644
--- a/include/uapi/linux/virtio_net.h
+++ b/include/uapi/linux/virtio_net.h
@@ -57,6 +57,9 @@
* Steering */
#define VIRTIO_NET_F_CTRL_MAC_ADDR 23 /* Set MAC address */
+#define VIRTIO_NET_F_STANDBY 62 /* Act as standby for another device
+ * with the same MAC.
+ */
#define VIRTIO_NET_F_SPEED_DUPLEX 63 /* Device set linkspeed and duplex */
#ifndef VIRTIO_NET_NO_LEGACY
--
2.14.3
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