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| author |  David Wei <dw@davidwei.uk>
| 2024-02-28 15:22:51 -0800 |
|---|---|---|
| committer |  David S. Miller <davem@davemloft.net>
| 2024-03-01 10:43:10 +0000 |
| commit | 8debcf5832c3e8a6baaea27c75ad8a6ba5077beb (patch) | |
| tree | f8dbad141cfc814a6214de2021b796c2685880e8 /drivers | |
| parent | netdevsim: forward skbs from one connected port to another (diff) | |
| download | linux-8debcf5832c3e8a6baaea27c75ad8a6ba5077beb.tar.gz linux-8debcf5832c3e8a6baaea27c75ad8a6ba5077beb.tar.bz2 linux-8debcf5832c3e8a6baaea27c75ad8a6ba5077beb.zip | |
netdevsim: add ndo_get_iflink() implementation
Add an implementation for ndo_get_iflink() in netdevsim that shows the
ifindex of the linked peer, if any.
Signed-off-by: David Wei <dw@davidwei.uk>
Reviewed-by: Maciek Machnikowski <maciek@machnikowski.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/netdevsim/netdev.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/net/netdevsim/netdev.c b/drivers/net/netdevsim/netdev.c index c3f3fda5fdc0..8330bc0bcb7e 100644 --- a/drivers/net/netdevsim/netdev.c +++ b/drivers/net/netdevsim/netdev.c @@ -283,6 +283,21 @@ nsim_set_features(struct net_device *dev, netdev_features_t features) return 0; } +static int nsim_get_iflink(const struct net_device *dev) +{ + struct netdevsim *nsim, *peer; + int iflink; + + nsim = netdev_priv(dev); + + rcu_read_lock(); + peer = rcu_dereference(nsim->peer); + iflink = peer ? READ_ONCE(peer->netdev->ifindex) : 0; + rcu_read_unlock(); + + return iflink; +} + static const struct net_device_ops nsim_netdev_ops = { .ndo_start_xmit = nsim_start_xmit, .ndo_set_rx_mode = nsim_set_rx_mode, @@ -300,6 +315,7 @@ static const struct net_device_ops nsim_netdev_ops = { .ndo_set_vf_rss_query_en = nsim_set_vf_rss_query_en, .ndo_setup_tc = nsim_setup_tc, .ndo_set_features = nsim_set_features, + .ndo_get_iflink = nsim_get_iflink, .ndo_bpf = nsim_bpf, }; |