On 6/9/26 2:42 PM, Matteo Perin via dev wrote: > This commit adds the peer_ifindex to the interface status column for > Linux veth devices, allowing applications like OVN to programmatically > discover veth pairs without requiring additional system calls or manual > configuration. > > The implementation leverages the existing ethtool infrastructure: > - Uses ETHTOOL_GDRVINFO to identify veth devices and get n_stats > - Queries ETH_SS_STATS string set to get statistic names > - Dynamically allocates buffer based on n_stats > - Uses ETHTOOL_GSTATS to retrieve veth statistics > - Finds peer_ifindex by name in the statistics array > > The ifindex value is cached to avoid scalability issues with a > considerable amount of ports. > The cached peer_ifindex is then properly invalidated when the > corresponding veth device is removed. > This ensures that, when veth pairs are deleted and recreated with > the same name, the new peer_ifindex is correctly detected and reported. > > A test that create veth pairs across network namespaces, verifies > peer_ifindex reporting, and validates correct detection of ifindex > changes when pairs are recreated was added as well. > > Signed-off-by: Matteo Perin <[email protected]> > --- > lib/netdev-linux-private.h | 1 + > lib/netdev-linux.c | 52 ++++++++++++++++++++++++++++++++++++++ > tests/system-interface.at | 48 +++++++++++++++++++++++++++++++++++ > vswitchd/vswitch.xml | 13 ++++++++++ > 4 files changed, 114 insertions(+)
I guess, I have one small comment for this one after all - we should add a NEWS entry for the new user-visible functionality. Best regards, Ilya Maximets. _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
