Commit 5e1567ae authored by Jamal Hadi Salim's avatar Jamal Hadi Salim Committed by David S. Miller

net sched: skbedit action fix late binding

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

//add a skbedit action and give it an instance id of 1
sudo tc actions add action skbedit mark 10 index 1
//create a filter which binds to skbedit 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 skbedit index 1

Message before fix was:
RTNETLINK answers: Invalid argument
We have an error talking to the kernel
Signed-off-by: default avatarJamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: default avatarCong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0e5538ab
......@@ -69,7 +69,7 @@ static int tcf_skbedit_init(struct net *net, struct nlattr *nla,
struct tcf_skbedit *d;
u32 flags = 0, *priority = NULL, *mark = NULL;
u16 *queue_mapping = NULL;
int ret = 0, err;
int ret = 0, err, exists = 0;
if (nla == NULL)
return -EINVAL;
......@@ -96,12 +96,18 @@ static int tcf_skbedit_init(struct net *net, struct nlattr *nla,
mark = nla_data(tb[TCA_SKBEDIT_MARK]);
}
if (!flags)
return -EINVAL;
parm = nla_data(tb[TCA_SKBEDIT_PARMS]);
if (!tcf_hash_check(tn, parm->index, a, bind)) {
exists = tcf_hash_check(tn, parm->index, a, bind);
if (exists && bind)
return 0;
if (!flags) {
tcf_hash_release(a, bind);
return -EINVAL;
}
if (!exists) {
ret = tcf_hash_create(tn, parm->index, est, a,
sizeof(*d), bind, false);
if (ret)
......@@ -111,8 +117,6 @@ static int tcf_skbedit_init(struct net *net, struct nlattr *nla,
ret = ACT_P_CREATED;
} else {
d = to_skbedit(a);
if (bind)
return 0;
tcf_hash_release(a, bind);
if (!ovr)
return -EEXIST;
......
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