diff options
| -rw-r--r-- | net/core/sock.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/net/core/sock.c b/net/core/sock.c index 435a0ba85e52..feca4c98f8a0 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -728,9 +728,22 @@ int sock_setsockopt(struct socket *sock, int level, int optname, sock_valbool_flag(sk, SOCK_DBG, valbool); break; case SO_REUSEADDR: - sk->sk_reuse = (valbool ? SK_CAN_REUSE : SK_NO_REUSE); + val = (valbool ? SK_CAN_REUSE : SK_NO_REUSE); + if ((sk->sk_family == PF_INET || sk->sk_family == PF_INET6) && + inet_sk(sk)->inet_num && + (sk->sk_reuse != val)) { + ret = (sk->sk_state == TCP_ESTABLISHED) ? -EISCONN : -EUCLEAN; + break; + } + sk->sk_reuse = val; break; case SO_REUSEPORT: + if ((sk->sk_family == PF_INET || sk->sk_family == PF_INET6) && + inet_sk(sk)->inet_num && + (sk->sk_reuseport != valbool)) { + ret = (sk->sk_state == TCP_ESTABLISHED) ? -EISCONN : -EUCLEAN; + break; + } sk->sk_reuseport = valbool; break; case SO_TYPE: |