diff options
| author | James Chapman <jchapman@katalix.com> | 2012-04-10 00:10:43 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-04-13 11:01:44 -0400 |
| commit | c9be48dc8bb22f1f6e6ff1560b2b28e925a0b815 (patch) | |
| tree | b8f42aa6aed3289bf8dfd4b9a036efea93e1df0b | |
| parent | d1f224ae186b834af647661ffaf403a817c050ce (diff) | |
l2tp: don't overwrite source address in l2tp_ip_bind()
Applications using L2TP/IP sockets want to be able to bind() an L2TP/IP
socket to set the local tunnel id while leaving the auto-assigned source
address alone. So if no source address is supplied, don't overwrite
the address already stored in the socket.
Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/l2tp/l2tp_ip.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c index b56be1452f8..585d93ecee2 100644 --- a/net/l2tp/l2tp_ip.c +++ b/net/l2tp/l2tp_ip.c @@ -271,7 +271,8 @@ static int l2tp_ip_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST) goto out; - inet->inet_rcv_saddr = inet->inet_saddr = addr->l2tp_addr.s_addr; + if (addr->l2tp_addr.s_addr) + inet->inet_rcv_saddr = inet->inet_saddr = addr->l2tp_addr.s_addr; if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST) inet->inet_saddr = 0; /* Use device */ sk_dst_reset(sk); |