[PATCH] content: Introduce VIRTIO_NET_F_STANDBY feature

[Sridhar Samudrala <sridhar.samudrala@intel.com>]

VIRTIO_NET_F_STANDBY feature enables hypervisor to indicate virtio_net
driver to act as a standby for another device with the same MAC address.

Signed-off-by: Sridhar Samudrala <sridhar.samudrala@intel.com
---
 content.tex | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/content.tex b/content.tex
index be18234..010b6ee 100644
--- a/content.tex
+++ b/content.tex
@@ -2525,6 +2525,9 @@ features.
 
 \item[VIRTIO_NET_F_CTRL_MAC_ADDR(23)] Set MAC address through control
     channel.
+
+\item[VIRTIO_NET_F_STANDBY(62)] Driver acts as standby for another
+    device with the same MAC
 \end{description}
 
 \subsubsection{Feature bit requirements}\label{sec:Device Types / Network Device / Feature bits / Feature bit requirements}
@@ -2636,6 +2639,13 @@ If the driver negotiates VIRTIO_NET_F_MTU, it MUST NOT transmit packets of
 size exceeding the value of \field{mtu} (plus low level ethernet header length)
 with \field{gso_type} NONE or ECN.
 
+A driver SHOULD negotiate VIRTIO_NET_F_STANDBY feature if the device offers it.
+
+If the driver negotiates VIRTIO_NET_F_STANDBY, it should act as a standby for
+another device with the same MAC address when available. The hypervisor can
+hot-plug a primary device with same MAC address if the feature is successfully
+negotiated with the driver.
+
 \subsubsection{Legacy Interface: Device configuration layout}\label{sec:Device Types / Network Device / Device configuration layout / Legacy Interface: Device configuration layout}
 \label{sec:Device Types / Block Device / Feature bits / Device configuration layout / Legacy Interface: Device configuration layout}
 When using the legacy interface, transitional devices and drivers
-- 
2.14.4