[ICMP]: Store sock rather than socket for ICMP flow control.
Basically, there is no difference, what to store: socket or sock. Though,
sock looks better as there will be 1 less dereferrence on the fast path.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index b9b13a7..875bdc7 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -80,8 +80,8 @@
*
* On SMP we have one ICMP socket per-cpu.
*/
-static DEFINE_PER_CPU(struct socket *, __icmpv6_socket) = NULL;
-#define icmpv6_socket __get_cpu_var(__icmpv6_socket)
+static DEFINE_PER_CPU(struct sock *, __icmpv6_sk) = NULL;
+#define icmpv6_sk __get_cpu_var(__icmpv6_sk)
static int icmpv6_rcv(struct sk_buff *skb);
@@ -94,7 +94,7 @@
{
local_bh_disable();
- if (unlikely(!spin_trylock(&icmpv6_socket->sk->sk_lock.slock))) {
+ if (unlikely(!spin_trylock(&icmpv6_sk->sk_lock.slock))) {
/* This can happen if the output path (f.e. SIT or
* ip6ip6 tunnel) signals dst_link_failure() for an
* outgoing ICMP6 packet.
@@ -107,7 +107,7 @@
static __inline__ void icmpv6_xmit_unlock(void)
{
- spin_unlock_bh(&icmpv6_socket->sk->sk_lock.slock);
+ spin_unlock_bh(&icmpv6_sk->sk_lock.slock);
}
/*
@@ -392,7 +392,7 @@
if (icmpv6_xmit_lock())
return;
- sk = icmpv6_socket->sk;
+ sk = icmpv6_sk;
np = inet6_sk(sk);
if (!icmpv6_xrlim_allow(sk, type, &fl))
@@ -538,7 +538,7 @@
if (icmpv6_xmit_lock())
return;
- sk = icmpv6_socket->sk;
+ sk = icmpv6_sk;
np = inet6_sk(sk);
if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst))
@@ -776,7 +776,7 @@
}
/*
- * Special lock-class for __icmpv6_socket:
+ * Special lock-class for __icmpv6_sk:
*/
static struct lock_class_key icmpv6_socket_sk_dst_lock_key;
@@ -786,8 +786,9 @@
int err, i, j;
for_each_possible_cpu(i) {
+ struct socket *sock;
err = sock_create_kern(PF_INET6, SOCK_RAW, IPPROTO_ICMPV6,
- &per_cpu(__icmpv6_socket, i));
+ &sock);
if (err < 0) {
printk(KERN_ERR
"Failed to initialize the ICMP6 control socket "
@@ -796,12 +797,12 @@
goto fail;
}
- sk = per_cpu(__icmpv6_socket, i)->sk;
+ per_cpu(__icmpv6_sk, i) = sk = sock->sk;
sk->sk_allocation = GFP_ATOMIC;
/*
* Split off their lock-class, because sk->sk_dst_lock
* gets used from softirqs, which is safe for
- * __icmpv6_socket (because those never get directly used
+ * __icmpv6_sk (because those never get directly used
* via userspace syscalls), but unsafe for normal sockets.
*/
lockdep_set_class(&sk->sk_dst_lock,
@@ -829,7 +830,7 @@
for (j = 0; j < i; j++) {
if (!cpu_possible(j))
continue;
- sock_release(per_cpu(__icmpv6_socket, j));
+ sock_release(per_cpu(__icmpv6_sk, j)->sk_socket);
}
return err;
@@ -840,7 +841,7 @@
int i;
for_each_possible_cpu(i) {
- sock_release(per_cpu(__icmpv6_socket, i));
+ sock_release(per_cpu(__icmpv6_sk, i)->sk_socket);
}
inet6_del_protocol(&icmpv6_protocol, IPPROTO_ICMPV6);
}