NIC SR-IOV APIs¶
Modern NICs are strongly encouraged to focus on implementing the switchdev
model (see Ethernet switch device driver model (switchdev)) to configure forwarding and security of SR-IOV
functionality.
Legacy API¶
The old SR-IOV API is implemented in rtnetlink Netlink family as part of
the RTM_GETLINK and RTM_SETLINK commands. On the driver side
it consists of a number of ndo_set_vf_* and ndo_get_vf_* callbacks.
Since the legacy APIs do not integrate well with the rest of the stack the API is considered frozen; no new functionality or extensions will be accepted. New drivers should not implement the uncommon callbacks; namely the following callbacks are off limits:
ndo_get_vf_port
ndo_set_vf_port
ndo_set_vf_rss_query_en