diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/sctp/socket.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index d370c945a757..a5b6e559451e 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -333,12 +333,19 @@ SCTP_STATIC int sctp_do_bind(struct sock *sk, union sctp_addr *addr, int len) if (!sp->pf->bind_verify(sp, addr)) return -EADDRNOTAVAIL; - /* We must either be unbound, or bind to the same port. */ - if (bp->port && (snum != bp->port)) { - SCTP_DEBUG_PRINTK("sctp_do_bind:" + /* We must either be unbound, or bind to the same port. + * It's OK to allow 0 ports if we are already bound. + * We'll just inhert an already bound port in this case + */ + if (bp->port) { + if (!snum) + snum = bp->port; + else if (snum != bp->port) { + SCTP_DEBUG_PRINTK("sctp_do_bind:" " New port %d does not match existing port " "%d.\n", snum, bp->port); - return -EINVAL; + return -EINVAL; + } } if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) |