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authorEric Dumazet <eric.dumazet@gmail.com>2010-10-25 21:02:28 +0000
committerDavid S. Miller <davem@davemloft.net>2010-10-27 11:37:31 -0700
commite0ad61ec867fdd262804afa7a68e11fc9930c2b9 (patch)
treef59451cdfa2086757e55b18b87167b0fef3de2c1 /net
parent1c31720a74e19bb57f301350a3b03210fa2ba9e3 (diff)
downloadlinux-2.6.38-lt-ux500-e0ad61ec867fdd262804afa7a68e11fc9930c2b9.tar.gz
net: add __rcu annotations to protocol
Add __rcu annotations to : struct net_protocol *inet_protos struct net_protocol *inet6_protos And use appropriate casts to reduce sparse warnings if CONFIG_SPARSE_RCU_POINTER=y Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/protocol.c8
-rw-r--r--net/ipv6/protocol.c8
2 files changed, 10 insertions, 6 deletions
diff --git a/net/ipv4/protocol.c b/net/ipv4/protocol.c
index 65699c24411..9ae5c01cd0b 100644
--- a/net/ipv4/protocol.c
+++ b/net/ipv4/protocol.c
@@ -28,7 +28,7 @@
#include <linux/spinlock.h>
#include <net/protocol.h>
-const struct net_protocol *inet_protos[MAX_INET_PROTOS] __read_mostly;
+const struct net_protocol __rcu *inet_protos[MAX_INET_PROTOS] __read_mostly;
/*
* Add a protocol handler to the hash tables
@@ -38,7 +38,8 @@ int inet_add_protocol(const struct net_protocol *prot, unsigned char protocol)
{
int hash = protocol & (MAX_INET_PROTOS - 1);
- return !cmpxchg(&inet_protos[hash], NULL, prot) ? 0 : -1;
+ return !cmpxchg((const struct net_protocol **)&inet_protos[hash],
+ NULL, prot) ? 0 : -1;
}
EXPORT_SYMBOL(inet_add_protocol);
@@ -50,7 +51,8 @@ int inet_del_protocol(const struct net_protocol *prot, unsigned char protocol)
{
int ret, hash = protocol & (MAX_INET_PROTOS - 1);
- ret = (cmpxchg(&inet_protos[hash], prot, NULL) == prot) ? 0 : -1;
+ ret = (cmpxchg((const struct net_protocol **)&inet_protos[hash],
+ prot, NULL) == prot) ? 0 : -1;
synchronize_net();
diff --git a/net/ipv6/protocol.c b/net/ipv6/protocol.c
index 9bb936ae245..9a7978fdc02 100644
--- a/net/ipv6/protocol.c
+++ b/net/ipv6/protocol.c
@@ -25,13 +25,14 @@
#include <linux/spinlock.h>
#include <net/protocol.h>
-const struct inet6_protocol *inet6_protos[MAX_INET_PROTOS] __read_mostly;
+const struct inet6_protocol __rcu *inet6_protos[MAX_INET_PROTOS] __read_mostly;
int inet6_add_protocol(const struct inet6_protocol *prot, unsigned char protocol)
{
int hash = protocol & (MAX_INET_PROTOS - 1);
- return !cmpxchg(&inet6_protos[hash], NULL, prot) ? 0 : -1;
+ return !cmpxchg((const struct inet6_protocol **)&inet6_protos[hash],
+ NULL, prot) ? 0 : -1;
}
EXPORT_SYMBOL(inet6_add_protocol);
@@ -43,7 +44,8 @@ int inet6_del_protocol(const struct inet6_protocol *prot, unsigned char protocol
{
int ret, hash = protocol & (MAX_INET_PROTOS - 1);
- ret = (cmpxchg(&inet6_protos[hash], prot, NULL) == prot) ? 0 : -1;
+ ret = (cmpxchg((const struct inet6_protocol **)&inet6_protos[hash],
+ prot, NULL) == prot) ? 0 : -1;
synchronize_net();