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authorJamal Hadi Salim <jhs@mojatatu.com>2016-05-10 16:49:31 -0400
committerDavid S. Miller <davem@davemloft.net>2016-05-10 23:50:15 -0400
commit4e8c861550105f7aaa85a19b2571151cb8eceaa2 (patch)
tree9df50855210ff3adbf60291dfba1ea284370d9e0
parent5e1567aeb7fe0ca478bfad5d17791cce3ddd45c9 (diff)
downloadlinux-4e8c861550105f7aaa85a19b2571151cb8eceaa2.tar.gz
net sched: ife action fix late binding
The process below was broken and is fixed with this patch. //add an ife action and give it an instance id of 1 sudo tc actions add action ife encode \ type 0xDEAD allow mark dst 02:15:15:15:15:15 index 1 //create a filter which binds to ife 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 1:11 action ife 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_ife.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/net/sched/act_ife.c b/net/sched/act_ife.c
index c589a9ba506a..343d011aa818 100644
--- a/net/sched/act_ife.c
+++ b/net/sched/act_ife.c
@@ -423,7 +423,7 @@ static int tcf_ife_init(struct net *net, struct nlattr *nla,
u16 ife_type = 0;
u8 *daddr = NULL;
u8 *saddr = NULL;
- int ret = 0;
+ int ret = 0, exists = 0;
int err;
err = nla_parse_nested(tb, TCA_IFE_MAX, nla, ife_policy);
@@ -435,25 +435,29 @@ static int tcf_ife_init(struct net *net, struct nlattr *nla,
parm = nla_data(tb[TCA_IFE_PARMS]);
+ exists = tcf_hash_check(tn, parm->index, a, bind);
+ if (exists && bind)
+ return 0;
+
if (parm->flags & IFE_ENCODE) {
/* Until we get issued the ethertype, we cant have
* a default..
**/
if (!tb[TCA_IFE_TYPE]) {
+ if (exists)
+ tcf_hash_release(a, bind);
pr_info("You MUST pass etherype for encoding\n");
return -EINVAL;
}
}
- if (!tcf_hash_check(tn, parm->index, a, bind)) {
+ if (!exists) {
ret = tcf_hash_create(tn, parm->index, est, a, sizeof(*ife),
bind, false);
if (ret)
return ret;
ret = ACT_P_CREATED;
} else {
- if (bind) /* dont override defaults */
- return 0;
tcf_hash_release(a, bind);
if (!ovr)
return -EEXIST;
@@ -495,6 +499,8 @@ static int tcf_ife_init(struct net *net, struct nlattr *nla,
NULL);
if (err) {
metadata_parse_err:
+ if (exists)
+ tcf_hash_release(a, bind);
if (ret == ACT_P_CREATED)
_tcf_ife_cleanup(a, bind);