diff options
Diffstat (limited to 'net/xdp')
| -rw-r--r-- | net/xdp/xsk.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c index 5a8c0dd250af..31dca4ecb2c5 100644 --- a/net/xdp/xsk.c +++ b/net/xdp/xsk.c @@ -886,6 +886,7 @@ static int xsk_bind(struct socket *sock, struct sockaddr *addr, int addr_len) struct sock *sk = sock->sk; struct xdp_sock *xs = xdp_sk(sk); struct net_device *dev; + int bound_dev_if; u32 flags, qid; int err = 0; @@ -899,6 +900,10 @@ static int xsk_bind(struct socket *sock, struct sockaddr *addr, int addr_len) XDP_USE_NEED_WAKEUP)) return -EINVAL; + bound_dev_if = READ_ONCE(sk->sk_bound_dev_if); + if (bound_dev_if && bound_dev_if != sxdp->sxdp_ifindex) + return -EINVAL; + rtnl_lock(); mutex_lock(&xs->mutex); if (xs->state != XSK_READY) { |