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authorChangli Gao <xiaosuo@gmail.com>2010-06-24 20:25:12 +0400
committerDavid S. Miller <davem@davemloft.net>2010-06-29 10:24:32 +0400
commit210d6de78c5d7c785fc532556cea340e517955e1 (patch)
treee4bbac89a8bc16154f51ad61e140be1b7bd2b92d /net/sched/act_mirred.c
parentc4ead4c595cd54cf7b1a184d4f888ce0d7cce7d4 (diff)
downloadlinux-210d6de78c5d7c785fc532556cea340e517955e1.tar.xz
act_mirred: don't clone skb when skb isn't shared
don't clone skb when skb isn't shared When the tcf_action is TC_ACT_STOLEN, and the skb isn't shared, we don't need to clone a new skb. As the skb will be freed after this function returns, we can use it freely once we get a reference to it. Signed-off-by: Changli Gao <xiaosuo@gmail.com> ---- include/net/sch_generic.h | 11 +++++++++-- net/sched/act_mirred.c | 6 +++--- 2 files changed, 12 insertions(+), 5 deletions(-) Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/act_mirred.c')
-rw-r--r--net/sched/act_mirred.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
index c0b6863e3b87..2e9a7b91aa10 100644
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -169,13 +169,13 @@ static int tcf_mirred(struct sk_buff *skb, struct tc_action *a,
goto out;
}
- skb2 = skb_act_clone(skb, GFP_ATOMIC);
+ at = G_TC_AT(skb->tc_verd);
+ skb2 = skb_act_clone(skb, GFP_ATOMIC, m->tcf_action);
if (skb2 == NULL)
goto out;
m->tcf_bstats.bytes += qdisc_pkt_len(skb2);
m->tcf_bstats.packets++;
- at = G_TC_AT(skb->tc_verd);
if (!(at & AT_EGRESS)) {
if (m->tcfm_ok_push)
skb_push(skb2, skb2->dev->hard_header_len);
@@ -185,8 +185,8 @@ static int tcf_mirred(struct sk_buff *skb, struct tc_action *a,
if (m->tcfm_eaction != TCA_EGRESS_MIRROR)
skb2->tc_verd = SET_TC_FROM(skb2->tc_verd, at);
- skb2->dev = dev;
skb2->skb_iif = skb->dev->ifindex;
+ skb2->dev = dev;
dev_queue_xmit(skb2);
err = 0;