diff options
| author |   Changli Gao <xiaosuo@gmail.com> | 2010-06-24 16:25:12 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2010-06-28 23:24:32 -0700 |
| commit | 210d6de78c5d7c785fc532556cea340e517955e1 (patch) | |
| tree | e4bbac89a8bc16154f51ad61e140be1b7bd2b92d /net | |
| parent | tcp: tso_fragment() might avoid GFP_ATOMIC (diff) | |
| download | linux-dev-210d6de78c5d7c785fc532556cea340e517955e1.tar.xz linux-dev-210d6de78c5d7c785fc532556cea340e517955e1.zip | |
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')
| -rw-r--r-- | net/sched/act_mirred.c | 6 |
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; |