diff options
Diffstat (limited to 'net/ipv4/protocol.c')
| -rw-r--r-- | net/ipv4/protocol.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/net/ipv4/protocol.c b/net/ipv4/protocol.c index 0f9d09f54bd..46d6a1c923a 100644 --- a/net/ipv4/protocol.c +++ b/net/ipv4/protocol.c @@ -31,12 +31,14 @@ const struct net_protocol __rcu *inet_protos[MAX_INET_PROTOS] __read_mostly; const struct net_offload __rcu *inet_offloads[MAX_INET_PROTOS] __read_mostly; -/* - * Add a protocol handler to the hash tables - */ - int inet_add_protocol(const struct net_protocol *prot, unsigned char protocol) { + if (!prot->netns_ok) { + pr_err("Protocol %u is not namespace aware, cannot register.\n", + protocol); + return -EINVAL; + } + return !cmpxchg((const struct net_protocol **)&inet_protos[protocol], NULL, prot) ? 0 : -1; } @@ -49,10 +51,6 @@ int inet_add_offload(const struct net_offload *prot, unsigned char protocol) } EXPORT_SYMBOL(inet_add_offload); -/* - * Remove a protocol from the hash tables. - */ - int inet_del_protocol(const struct net_protocol *prot, unsigned char protocol) { int ret; |