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authorJamal Hadi Salim <jhs@mojatatu.com>2016-05-10 16:49:30 -0400
committerDavid S. Miller <davem@davemloft.net>2016-05-10 23:50:15 -0400
commit5e1567aeb7fe0ca478bfad5d17791cce3ddd45c9 (patch)
tree5b3b2762410bcf2dd7ffd5157f4f6c4a07fee739
parent0e5538ab2b59ec205411949d839de6dbab663730 (diff)
downloadlinux-5e1567aeb7fe0ca478bfad5d17791cce3ddd45c9.tar.gz
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: Jamal Hadi Salim <jhs@mojatatu.com> Reviewed-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/sched/act_skbedit.c18
1 files changed, 11 insertions, 7 deletions
diff --git a/net/sched/act_skbedit.c b/net/sched/act_skbedit.c
index cfcdbdc00c9b..69da5a8f0034 100644
--- a/net/sched/act_skbedit.c
+++ b/net/sched/act_skbedit.c
@@ -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;