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.samudr...@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
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