aboutsummaryrefslogtreecommitdiffstats
path: root/net
diff options
context:
space:
mode:
authorDavid S. Miller <davem@davemloft.net>2010-08-30 19:08:01 -0700
committerDavid S. Miller <davem@davemloft.net>2010-08-31 09:51:37 -0700
commitb963ea89f00f13c648af4082e5efb2172d369727 (patch)
treed5a09f822da3b0827a32c5b2aa2d72f8e537b6fa /net
parent628e300cccaa628d8fb92aa28cb7530a3d5f2257 (diff)
downloadmrst-s0i3-test-b963ea89f00f13c648af4082e5efb2172d369727.tar.gz
mrst-s0i3-test-b963ea89f00f13c648af4082e5efb2172d369727.tar.xz
mrst-s0i3-test-b963ea89f00f13c648af4082e5efb2172d369727.zip
netlink: Make NETLINK_USERSOCK work again.
Once we started enforcing the a nl_table[] entry exist for a protocol, NETLINK_USERSOCK stopped working. Add a dummy table entry so that it works again. Reported-by: Thomas Voegtle <tv@lio96.de> Tested-by: Thomas Voegtle <tv@lio96.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/netlink/af_netlink.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 980fe4ad001..cd96ed3ccee 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -2102,6 +2102,26 @@ static void __net_exit netlink_net_exit(struct net *net)
#endif
}
+static void __init netlink_add_usersock_entry(void)
+{
+ unsigned long *listeners;
+ int groups = 32;
+
+ listeners = kzalloc(NLGRPSZ(groups) + sizeof(struct listeners_rcu_head),
+ GFP_KERNEL);
+ if (!listeners)
+ panic("netlink_add_usersock_entry: Cannot allocate listneres\n");
+
+ netlink_table_grab();
+
+ nl_table[NETLINK_USERSOCK].groups = groups;
+ nl_table[NETLINK_USERSOCK].listeners = listeners;
+ nl_table[NETLINK_USERSOCK].module = THIS_MODULE;
+ nl_table[NETLINK_USERSOCK].registered = 1;
+
+ netlink_table_ungrab();
+}
+
static struct pernet_operations __net_initdata netlink_net_ops = {
.init = netlink_net_init,
.exit = netlink_net_exit,
@@ -2150,6 +2170,8 @@ static int __init netlink_proto_init(void)
hash->rehash_time = jiffies;
}
+ netlink_add_usersock_entry();
+
sock_register(&netlink_family_ops);
register_pernet_subsys(&netlink_net_ops);
/* The netlink device handler may be needed early. */