net/ipv6/addrconf: simplify sysctl registration
Struct ctl_table_header holds pointer to sysctl table which could be used
for freeing it after unregistration. IPv4 sysctls already use that.
Remove redundant NULL assignment: ndev allocated using kzalloc.
This also saves some bytes: sysctl table could be shorter than
DEVCONF_MAX+1 if some options are disable in config.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index 7edc14f..58d6e15 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -63,7 +63,8 @@
} stable_secret;
__s32 use_oif_addrs_only;
__s32 keep_addr_on_down;
- void *sysctl;
+
+ struct ctl_table_header *sysctl_header;
};
struct ipv6_params {