diff options
Diffstat (limited to 'net/l2tp')
| -rw-r--r-- | net/l2tp/l2tp_core.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index f82ea12bac37..fcb53ed1c4fb 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -122,8 +122,6 @@ static inline struct l2tp_tunnel *l2tp_tunnel(struct sock *sk) static inline struct l2tp_net *l2tp_pernet(const struct net *net) { - BUG_ON(!net); - return net_generic(net, l2tp_net_id); } @@ -322,8 +320,13 @@ int l2tp_session_register(struct l2tp_session *session, spin_lock_bh(&pn->l2tp_session_hlist_lock); + /* IP encap expects session IDs to be globally unique, while + * UDP encap doesn't. + */ hlist_for_each_entry(session_walk, g_head, global_hlist) - if (session_walk->session_id == session->session_id) { + if (session_walk->session_id == session->session_id && + (session_walk->tunnel->encap == L2TP_ENCAPTYPE_IP || + tunnel->encap == L2TP_ENCAPTYPE_IP)) { err = -EEXIST; goto err_tlock_pnlock; } |
