From 47a31a6ffcca3b55149bccd5b99763e5eea60ac4 Mon Sep 17 00:00:00 2001
From: Eric Dumazet <dada1@cosmosbay.com>
Date: Mon, 5 Nov 2007 23:39:16 -0800
Subject: [PATCH] [IPV4]: Use the {DEFINE|REF}_PROTO_INUSE infrastructure

Trivial patch to make "tcp,udp,udplite,raw" 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>
---
 net/ipv4/raw.c      | 3 +++
 net/ipv4/tcp_ipv4.c | 3 +++
 net/ipv4/udp.c      | 3 +++
 net/ipv4/udplite.c  | 3 +++
 4 files changed, 12 insertions(+)

diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index 3916faca3afe..66b42f547bf9 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -760,6 +760,8 @@ static int raw_ioctl(struct sock *sk, int cmd, unsigned long arg)
 	}
 }
 
+DEFINE_PROTO_INUSE(raw)
+
 struct proto raw_prot = {
 	.name		   = "RAW",
 	.owner		   = THIS_MODULE,
@@ -781,6 +783,7 @@ struct proto raw_prot = {
 	.compat_setsockopt = compat_raw_setsockopt,
 	.compat_getsockopt = compat_raw_getsockopt,
 #endif
+	REF_PROTO_INUSE(raw)
 };
 
 #ifdef CONFIG_PROC_FS
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index d438dfb0c8f3..e9127cdced20 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2417,6 +2417,8 @@ void tcp4_proc_exit(void)
 }
 #endif /* CONFIG_PROC_FS */
 
+DEFINE_PROTO_INUSE(tcp)
+
 struct proto tcp_prot = {
 	.name			= "TCP",
 	.owner			= THIS_MODULE,
@@ -2451,6 +2453,7 @@ struct proto tcp_prot = {
 	.compat_setsockopt	= compat_tcp_setsockopt,
 	.compat_getsockopt	= compat_tcp_getsockopt,
 #endif
+	REF_PROTO_INUSE(tcp)
 };
 
 void __init tcp_v4_init(struct net_proto_family *ops)
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 4bc25b46f33f..03c400ca14c5 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1430,6 +1430,8 @@ unsigned int udp_poll(struct file *file, struct socket *sock, poll_table *wait)
 
 }
 
+DEFINE_PROTO_INUSE(udp)
+
 struct proto udp_prot = {
 	.name		   = "UDP",
 	.owner		   = THIS_MODULE,
@@ -1452,6 +1454,7 @@ struct proto udp_prot = {
 	.compat_setsockopt = compat_udp_setsockopt,
 	.compat_getsockopt = compat_udp_getsockopt,
 #endif
+	REF_PROTO_INUSE(udp)
 };
 
 /* ------------------------------------------------------------------------ */
diff --git a/net/ipv4/udplite.c b/net/ipv4/udplite.c
index 94977205abb4..f5baeb3e8b85 100644
--- a/net/ipv4/udplite.c
+++ b/net/ipv4/udplite.c
@@ -44,6 +44,8 @@ static	struct net_protocol udplite_protocol = {
 	.no_policy	= 1,
 };
 
+DEFINE_PROTO_INUSE(udplite)
+
 struct proto 	udplite_prot = {
 	.name		   = "UDP-Lite",
 	.owner		   = THIS_MODULE,
@@ -67,6 +69,7 @@ struct proto 	udplite_prot = {
 	.compat_setsockopt = compat_udp_setsockopt,
 	.compat_getsockopt = compat_udp_getsockopt,
 #endif
+	REF_PROTO_INUSE(udplite)
 };
 
 static struct inet_protosw udplite4_protosw = {
-- 
2.20.1