[NETNS][ICMP]: Make ctl tables for ICMP sysctls per-net.

Add some flesh to ipv4_sysctl_init_net and ipv4_sysctl_exit_net,
i.e. copy the table, alter .data pointers and register it per-net.

Other ipv4_table's sysctls are now global, but this is going to
change once sysctl permissions patches migrate from -mm tree to 
mainline in 2.6.26 merge window :)

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index e3de0ff8ea4b..af685f71f4b5 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -17,6 +17,7 @@ struct netns_ipv4 {
 #ifdef CONFIG_SYSCTL
         struct ctl_table_header *forw_hdr;
         struct ctl_table_header *frags_hdr;
+        struct ctl_table_header *ipv4_hdr;
 #endif
         struct ipv4_devconf     *devconf_all;
         struct ipv4_devconf     *devconf_dflt;