[IPV6]: Use the {DEFINE|REF}_PROTO_INUSE infrastructure

Trivial patch to make "tcpv6,udpv6,udplitev6,rawv6" protocols uses the
fast "inuse sockets" infrastructure

Each protocol use then a static percpu var, instead of a dynamic one.
This saves some ram and some cpu cycles

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 06be2a1f2730..3aad861975a0 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -2107,6 +2107,8 @@ void tcp6_proc_exit(void)
 }
 #endif
 
+DEFINE_PROTO_INUSE(tcpv6)
+
 struct proto tcpv6_prot = {
         .name                   = "TCPv6",
         .owner                  = THIS_MODULE,
@@ -2141,6 +2143,7 @@ struct proto tcpv6_prot = {
         .compat_setsockopt      = compat_tcp_setsockopt,
         .compat_getsockopt      = compat_tcp_getsockopt,
 #endif
+        REF_PROTO_INUSE(tcpv6)
 };
 
 static struct inet6_protocol tcpv6_protocol = {