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authorChangli Gao <xiaosuo@gmail.com>2010-06-29 23:07:09 +0000
committerDavid S. Miller <davem@davemloft.net>2010-06-30 12:12:37 -0700
commit504f85c9d05f7c605306e808f0d835fe11bfd18d (patch)
tree98c3aa1f09c3c84598abfe6555010bfc54a2493d
parent5acbf7f10b9e336510a1de79b4af06f6da9a8c5a (diff)
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act_nat: use stack variable
act_nat: use stack variable structure tc_nat isn't too big for stack, so we can put it in stack. Signed-off-by: Changli Gao <xiaosuo@gmail.com> ---- net/sched/act_nat.c | 31 ++++++++++--------------------- 1 file changed, 10 insertions(+), 21 deletions(-) Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/sched/act_nat.c31
1 files changed, 10 insertions, 21 deletions
diff --git a/net/sched/act_nat.c b/net/sched/act_nat.c
index 5709494..0be49a4 100644
--- a/net/sched/act_nat.c
+++ b/net/sched/act_nat.c
@@ -265,40 +265,29 @@ static int tcf_nat_dump(struct sk_buff *skb, struct tc_action *a,
{
unsigned char *b = skb_tail_pointer(skb);
struct tcf_nat *p = a->priv;
- struct tc_nat *opt;
+ struct tc_nat opt;
struct tcf_t t;
- int s;
- s = sizeof(*opt);
+ opt.old_addr = p->old_addr;
+ opt.new_addr = p->new_addr;
+ opt.mask = p->mask;
+ opt.flags = p->flags;
- /* netlink spinlocks held above us - must use ATOMIC */
- opt = kzalloc(s, GFP_ATOMIC);
- if (unlikely(!opt))
- return -ENOBUFS;
+ opt.index = p->tcf_index;
+ opt.action = p->tcf_action;
+ opt.refcnt = p->tcf_refcnt - ref;
+ opt.bindcnt = p->tcf_bindcnt - bind;
- opt->old_addr = p->old_addr;
- opt->new_addr = p->new_addr;
- opt->mask = p->mask;
- opt->flags = p->flags;
-
- opt->index = p->tcf_index;
- opt->action = p->tcf_action;
- opt->refcnt = p->tcf_refcnt - ref;
- opt->bindcnt = p->tcf_bindcnt - bind;
-
- NLA_PUT(skb, TCA_NAT_PARMS, s, opt);
+ NLA_PUT(skb, TCA_NAT_PARMS, sizeof(opt), &opt);
t.install = jiffies_to_clock_t(jiffies - p->tcf_tm.install);
t.lastuse = jiffies_to_clock_t(jiffies - p->tcf_tm.lastuse);
t.expires = jiffies_to_clock_t(p->tcf_tm.expires);
NLA_PUT(skb, TCA_NAT_TM, sizeof(t), &t);
- kfree(opt);
-
return skb->len;
nla_put_failure:
nlmsg_trim(skb, b);
- kfree(opt);
return -1;
}