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author | Dave Airlie <airlied@redhat.com> | 2017-04-11 07:40:42 +1000 |
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committer | Dave Airlie <airlied@redhat.com> | 2017-04-11 07:40:42 +1000 |
commit | b769fefb68cd70385d68220ae341e5a10723fbc0 (patch) | |
tree | a2881410c9dc5a3474619d155fac981cfbd4ee8f /net/l2tp/l2tp_ip.c | |
parent | 1420f63b8207e966f54caec26d08abdc2ff37193 (diff) | |
parent | 39da7c509acff13fc8cb12ec1bb20337c988ed36 (diff) | |
download | linux-stable-b769fefb68cd70385d68220ae341e5a10723fbc0.tar.gz linux-stable-b769fefb68cd70385d68220ae341e5a10723fbc0.tar.bz2 linux-stable-b769fefb68cd70385d68220ae341e5a10723fbc0.zip |
Backmerge tag 'v4.11-rc6' into drm-next
Linux 4.11-rc6
drm-misc needs 4.11-rc5, may as well fix conflicts with rc6.
Diffstat (limited to 'net/l2tp/l2tp_ip.c')
-rw-r--r-- | net/l2tp/l2tp_ip.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c index d25038cfd64e..4d322c1b7233 100644 --- a/net/l2tp/l2tp_ip.c +++ b/net/l2tp/l2tp_ip.c @@ -143,19 +143,19 @@ static int l2tp_ip_recv(struct sk_buff *skb) } /* Ok, this is a data packet. Lookup the session. */ - session = l2tp_session_find(net, NULL, session_id); - if (session == NULL) + session = l2tp_session_get(net, NULL, session_id, true); + if (!session) goto discard; tunnel = session->tunnel; - if (tunnel == NULL) - goto discard; + if (!tunnel) + goto discard_sess; /* Trace packet contents, if enabled */ if (tunnel->debug & L2TP_MSG_DATA) { length = min(32u, skb->len); if (!pskb_may_pull(skb, length)) - goto discard; + goto discard_sess; /* Point to L2TP header */ optr = ptr = skb->data; @@ -165,6 +165,7 @@ static int l2tp_ip_recv(struct sk_buff *skb) } l2tp_recv_common(session, skb, ptr, optr, 0, skb->len, tunnel->recv_payload_hook); + l2tp_session_dec_refcount(session); return 0; @@ -178,9 +179,10 @@ pass_up: tunnel_id = ntohl(*(__be32 *) &skb->data[4]); tunnel = l2tp_tunnel_find(net, tunnel_id); - if (tunnel != NULL) + if (tunnel) { sk = tunnel->sock; - else { + sock_hold(sk); + } else { struct iphdr *iph = (struct iphdr *) skb_network_header(skb); read_lock_bh(&l2tp_ip_lock); @@ -202,6 +204,12 @@ pass_up: return sk_receive_skb(sk, skb, 1); +discard_sess: + if (session->deref) + session->deref(session); + l2tp_session_dec_refcount(session); + goto discard; + discard_put: sock_put(sk); |