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net sched: simple action fix late binding 

The process below was broken and is fixed with this patch.

//add a simple action and give it an instance id of 1
sudo tc actions add action simple sdata "foobar" index 1
//create a filter which binds to simple action id 1
sudo tc filter add dev $DEV parent ffff: protocol ip prio 1 u32\
match ip dst 17.0.0.1/32 flowid 1:10 action simple index 1

Message before fix was:
RTNETLINK answers: Invalid argument
We have an error talking to the kernel

Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Jamal Hadi Salim 2016-05-10 16:49:29 -04:00 committed by David S. Miller
parent 87dfbdc6c7
commit 0e5538ab2b
1 changed files with 12 additions and 6 deletions
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18
net/sched/act_simple.c
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@ -87,7 +87,7 @@ static int tcf_simp_init(struct net *net, struct nlattr *nla,
struct tc_defact *parm;
struct tcf_defact *d;
char *defdata;
int ret = 0, err;
int ret = 0, err, exists = 0;
if (nla == NULL)
return -EINVAL;
@ -99,13 +99,21 @@ static int tcf_simp_init(struct net *net, struct nlattr *nla,
if (tb[TCA_DEF_PARMS] == NULL)
return -EINVAL;
if (tb[TCA_DEF_DATA] == NULL)
return -EINVAL;
parm = nla_data(tb[TCA_DEF_PARMS]);
exists = tcf_hash_check(tn, parm->index, a, bind);
if (exists && bind)
return 0;
if (tb[TCA_DEF_DATA] == NULL) {
if (exists)
tcf_hash_release(a, bind);
return -EINVAL;
}
defdata = nla_data(tb[TCA_DEF_DATA]);
if (!tcf_hash_check(tn, parm->index, a, bind)) {
if (!exists) {
ret = tcf_hash_create(tn, parm->index, est, a,
sizeof(*d), bind, false);
if (ret)
@ -122,8 +130,6 @@ static int tcf_simp_init(struct net *net, struct nlattr *nla,
} else {
d = to_defact(a);
if (bind)
return 0;
tcf_hash_release(a, bind);
if (!ovr)
return -EEXIST;