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authorJulian Anastasov <ja@ssi.bg>2011-03-19 12:13:54 +0000
committerDavid S. Miller <davem@davemloft.net>2011-03-22 01:06:33 -0700
commit04024b937a6e9b7d4320b5853557cea3930d528c (patch)
treed14d770251f5b50d9647a662848c64bab034265a /net
parent2d230e2b2c3111cf4a11619f60dcd158ae84e3ab (diff)
downloadlinux-04024b937a6e9b7d4320b5853557cea3930d528c.tar.bz2
ipv4: optimize route adding on secondary promotion
Optimize the calling of fib_add_ifaddr for all secondary addresses after the promoted one to start from their place, not from the new place of the promoted secondary. It will save some CPU cycles because we are sure the promoted secondary was first for the subnet and all next secondaries do not change their place. Signed-off-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/devinet.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 2523001f4c9a..d5a4553bebc3 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -375,6 +375,7 @@ static void __inet_del_ifa(struct in_device *in_dev, struct in_ifaddr **ifap,
blocking_notifier_call_chain(&inetaddr_chain, NETDEV_DOWN, ifa1);
if (promote) {
+ struct in_ifaddr *next_sec = promote->ifa_next;
if (prev_prom) {
prev_prom->ifa_next = promote->ifa_next;
@@ -386,7 +387,7 @@ static void __inet_del_ifa(struct in_device *in_dev, struct in_ifaddr **ifap,
rtmsg_ifa(RTM_NEWADDR, promote, nlh, pid);
blocking_notifier_call_chain(&inetaddr_chain,
NETDEV_UP, promote);
- for (ifa = promote->ifa_next; ifa; ifa = ifa->ifa_next) {
+ for (ifa = next_sec; ifa; ifa = ifa->ifa_next) {
if (ifa1->ifa_mask != ifa->ifa_mask ||
!inet_ifa_match(ifa1->ifa_address, ifa))
continue;