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| author | Shmulik Ladkani <shmulik.ladkani@gmail.com> | 2016-05-26 19:16:36 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-05-30 09:03:53 +0200 |
| commit | 0e6b5259824e97a0f7e7b450421ff12865d3b0e2 (patch) | |
| tree | 58e073d906dd71972348cdcbc80c5a3037eb886b /net/l2tp/l2tp_ip6.c | |
| parent | Documentation: ip-sysctl.txt: clarify secure_redirects (diff) | |
| download | linux-0e6b5259824e97a0f7e7b450421ff12865d3b0e2.tar.xz linux-0e6b5259824e97a0f7e7b450421ff12865d3b0e2.zip | |
net: l2tp: Make l2tp_ip6 namespace aware
l2tp_ip6 tunnel and session lookups were still using init_net, although
the l2tp core infrastructure already supports lookups keyed by 'net'.
As a result, l2tp_ip6_recv discarded packets for tunnels/sessions
created in namespaces other than the init_net.
Fix, by using dev_net(skb->dev) or sock_net(sk) where appropriate.
Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/l2tp/l2tp_ip6.c')
| -rw-r--r-- | net/l2tp/l2tp_ip6.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/net/l2tp/l2tp_ip6.c b/net/l2tp/l2tp_ip6.c index c6f5df1bed12..6c54e03fe9c1 100644 --- a/net/l2tp/l2tp_ip6.c +++ b/net/l2tp/l2tp_ip6.c @@ -128,6 +128,7 @@ static inline struct sock *l2tp_ip6_bind_lookup(struct net *net, */ static int l2tp_ip6_recv(struct sk_buff *skb) { + struct net *net = dev_net(skb->dev); struct sock *sk; u32 session_id; u32 tunnel_id; @@ -154,7 +155,7 @@ static int l2tp_ip6_recv(struct sk_buff *skb) } /* Ok, this is a data packet. Lookup the session. */ - session = l2tp_session_find(&init_net, NULL, session_id); + session = l2tp_session_find(net, NULL, session_id); if (session == NULL) goto discard; @@ -188,14 +189,14 @@ pass_up: goto discard; tunnel_id = ntohl(*(__be32 *) &skb->data[4]); - tunnel = l2tp_tunnel_find(&init_net, tunnel_id); + tunnel = l2tp_tunnel_find(net, tunnel_id); if (tunnel != NULL) sk = tunnel->sock; else { struct ipv6hdr *iph = ipv6_hdr(skb); read_lock_bh(&l2tp_ip6_lock); - sk = __l2tp_ip6_bind_lookup(&init_net, &iph->daddr, + sk = __l2tp_ip6_bind_lookup(net, &iph->daddr, 0, tunnel_id); read_unlock_bh(&l2tp_ip6_lock); } @@ -263,6 +264,7 @@ static int l2tp_ip6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) struct inet_sock *inet = inet_sk(sk); struct ipv6_pinfo *np = inet6_sk(sk); struct sockaddr_l2tpip6 *addr = (struct sockaddr_l2tpip6 *) uaddr; + struct net *net = sock_net(sk); __be32 v4addr = 0; int addr_type; int err; @@ -286,7 +288,7 @@ static int l2tp_ip6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) err = -EADDRINUSE; read_lock_bh(&l2tp_ip6_lock); - if (__l2tp_ip6_bind_lookup(&init_net, &addr->l2tp_addr, + if (__l2tp_ip6_bind_lookup(net, &addr->l2tp_addr, sk->sk_bound_dev_if, addr->l2tp_conn_id)) goto out_in_use; read_unlock_bh(&l2tp_ip6_lock); @@ -456,7 +458,7 @@ static int l2tp_ip6_backlog_recv(struct sock *sk, struct sk_buff *skb) return 0; drop: - IP_INC_STATS(&init_net, IPSTATS_MIB_INDISCARDS); + IP_INC_STATS(sock_net(sk), IPSTATS_MIB_INDISCARDS); kfree_skb(skb); return -1; } |