diff options
| -rw-r--r-- | include/net/sock_reuseport.h | 2 | ||||
| -rw-r--r-- | net/core/sock_reuseport.c | 9 |
2 files changed, 9 insertions, 2 deletions
diff --git a/include/net/sock_reuseport.h b/include/net/sock_reuseport.h index 7dda3d7adba8..aecd30308d50 100644 --- a/include/net/sock_reuseport.h +++ b/include/net/sock_reuseport.h @@ -16,7 +16,7 @@ struct sock_reuseport { }; extern int reuseport_alloc(struct sock *sk); -extern int reuseport_add_sock(struct sock *sk, const struct sock *sk2); +extern int reuseport_add_sock(struct sock *sk, struct sock *sk2); extern void reuseport_detach_sock(struct sock *sk); extern struct sock *reuseport_select_sock(struct sock *sk, u32 hash, diff --git a/net/core/sock_reuseport.c b/net/core/sock_reuseport.c index 1df98c557440..e92b759d906c 100644 --- a/net/core/sock_reuseport.c +++ b/net/core/sock_reuseport.c @@ -93,10 +93,17 @@ static struct sock_reuseport *reuseport_grow(struct sock_reuseport *reuse) * @sk2: Socket belonging to the existing reuseport group. * May return ENOMEM and not add socket to group under memory pressure. */ -int reuseport_add_sock(struct sock *sk, const struct sock *sk2) +int reuseport_add_sock(struct sock *sk, struct sock *sk2) { struct sock_reuseport *reuse; + if (!rcu_access_pointer(sk2->sk_reuseport_cb)) { + int err = reuseport_alloc(sk2); + + if (err) + return err; + } + spin_lock_bh(&reuseport_lock); reuse = rcu_dereference_protected(sk2->sk_reuseport_cb, lockdep_is_held(&reuseport_lock)), |