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[ICMP]: Pass proper ICMP socket into icmp(v6)_xmit_(un)lock.

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We have to get socket lock inside icmp(v6)_xmit_lock/unlock. The socket
is get from global variable now. When this code became namespaces, one
should pass a namespace and get socket from it.

Though, above is useless. Socket is available in the caller, just pass
it inside. This saves a bit of code now and saves more later.

add/remove: 0/0 grow/shrink: 1/3 up/down: 1/-169 (-168)
function                                     old     new   delta
icmp_rcv                                     718     719      +1
icmpv6_rcv                                  2343    2303     -40
icmp_send                                   1566    1518     -48
icmp_reply                                   549     468     -81

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>
This commit is contained in:
Denis V. Lunev 2008-02-29 11:16:46 -08:00 • committed by David S. Miller
parent b7e729c4b4
commit 405666db84
2 changed files with 22 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

24
net/ipv6/icmp.c
View file

@ -90,11 +90,11 @@ static struct inet6_protocol icmpv6_protocol = {
.flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
};
static __inline__ int icmpv6_xmit_lock(void)
static __inline__ int icmpv6_xmit_lock(struct sock *sk)
{
local_bh_disable();
if (unlikely(!spin_trylock(&icmpv6_sk->sk_lock.slock))) {
if (unlikely(!spin_trylock(&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.
@ -105,9 +105,9 @@ static __inline__ int icmpv6_xmit_lock(void)
return 0;
}
static __inline__ void icmpv6_xmit_unlock(void)
static __inline__ void icmpv6_xmit_unlock(struct sock *sk)
{
spin_unlock_bh(&icmpv6_sk->sk_lock.slock);
spin_unlock_bh(&sk->sk_lock.slock);
}
/*
@ -389,12 +389,12 @@ void icmpv6_send(struct sk_buff *skb, int type, int code, __u32 info,
fl.fl_icmp_code = code;
security_skb_classify_flow(skb, &fl);
if (icmpv6_xmit_lock())
return;
sk = icmpv6_sk;
np = inet6_sk(sk);
if (icmpv6_xmit_lock(sk))
return;
if (!icmpv6_xrlim_allow(sk, type, &fl))
goto out;
@ -498,7 +498,7 @@ out_put:
out_dst_release:
dst_release(dst);
out:
icmpv6_xmit_unlock();
icmpv6_xmit_unlock(sk);
}
EXPORT_SYMBOL(icmpv6_send);
@ -535,12 +535,12 @@ static void icmpv6_echo_reply(struct sk_buff *skb)
fl.fl_icmp_type = ICMPV6_ECHO_REPLY;
security_skb_classify_flow(skb, &fl);
if (icmpv6_xmit_lock())
return;
sk = icmpv6_sk;
np = inet6_sk(sk);
if (icmpv6_xmit_lock(sk))
return;
if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst))
fl.oif = np->mcast_oif;
@ -584,7 +584,7 @@ out_put:
in6_dev_put(idev);
dst_release(dst);
out:
icmpv6_xmit_unlock();
icmpv6_xmit_unlock(sk);
}
static void icmpv6_notify(struct sk_buff *skb, int type, int code, __be32 info)