diff options
| author | Guillaume Nault <g.nault@alphalink.fr> | 2016-12-30 19:48:19 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-06 18:59:46 -0700 |
| commit | 000224c1106c2abc21a376c5bb851b1ffe4b4458 (patch) | |
| tree | e3f86567a59ec6a53392b3d3844939d6c8a69f62 /net/l2tp | |
| parent | c2804b21f2e7f46f76500aa58850127b31054c84 (diff) | |
l2tp: consider '::' as wildcard address in l2tp_ip6 socket lookup
[ Upstream commit 97b84fd6d91766ea57dcc350d78f42639e011c30 ]
An L2TP socket bound to the unspecified address should match with any
address. If not, it can't receive any packet and __l2tp_ip6_bind_lookup()
can't prevent another socket from binding on the same device/tunnel ID.
While there, rename the 'addr' variable to 'sk_laddr' (local addr), to
make following patch clearer.
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/l2tp')
| -rw-r--r-- | net/l2tp/l2tp_ip6.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/l2tp/l2tp_ip6.c b/net/l2tp/l2tp_ip6.c index b10abef6b0a0..1d522ce833e6 100644 --- a/net/l2tp/l2tp_ip6.c +++ b/net/l2tp/l2tp_ip6.c @@ -64,7 +64,7 @@ static struct sock *__l2tp_ip6_bind_lookup(struct net *net, struct sock *sk; sk_for_each_bound(sk, &l2tp_ip6_bind_table) { - const struct in6_addr *addr = inet6_rcv_saddr(sk); + const struct in6_addr *sk_laddr = inet6_rcv_saddr(sk); struct l2tp_ip6_sock *l2tp = l2tp_ip6_sk(sk); if (l2tp == NULL) @@ -72,7 +72,7 @@ static struct sock *__l2tp_ip6_bind_lookup(struct net *net, if ((l2tp->conn_id == tunnel_id) && net_eq(sock_net(sk), net) && - (!addr || ipv6_addr_equal(addr, laddr)) && + (!sk_laddr || ipv6_addr_any(sk_laddr) || ipv6_addr_equal(sk_laddr, laddr)) && (!sk->sk_bound_dev_if || !dif || sk->sk_bound_dev_if == dif)) goto found; |