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| author |   Jamal Hadi Salim <jhs@mojatatu.com> | 2016-05-10 16:49:30 -0400 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-05-10 23:50:15 -0400 |
| commit | 5e1567aeb7fe0ca478bfad5d17791cce3ddd45c9 (patch) | |
| tree | 5b3b2762410bcf2dd7ffd5157f4f6c4a07fee739 /net/sched | |
| parent | net sched: simple action fix late binding (diff) | |
| download | linux-dev-5e1567aeb7fe0ca478bfad5d17791cce3ddd45c9.tar.xz linux-dev-5e1567aeb7fe0ca478bfad5d17791cce3ddd45c9.zip | |
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>
Diffstat (limited to 'net/sched')
| -rw-r--r-- | net/sched/act_skbedit.c | 18 |
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; |