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| author | Cong Wang <cwang@twopensource.com> | 2014-04-25 13:54:06 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-04-27 23:42:39 -0400 |
| commit | 2f7ef2f8790f5bf53db4fc6b2310943139285827 (patch) | |
| tree | f2deb92bec03f3af01b9d7c1bf4dfb7b97760ecf /net/sched/cls_rsvp.h | |
| parent | 4940b8cd1bc6d452eaffa442d92a28534850ca78 (diff) | |
| download | linux-2f7ef2f8790f5bf53db4fc6b2310943139285827.tar.gz linux-2f7ef2f8790f5bf53db4fc6b2310943139285827.tar.bz2 linux-2f7ef2f8790f5bf53db4fc6b2310943139285827.zip | |
sched, cls: check if we could overwrite actions when changing a filter
When actions are attached to a filter, they are a part of the filter
itself, so when changing a filter we should allow to overwrite the actions
inside as well.
In my specific case, when I tried to _append_ a new action to an existing
filter which already has an action, I got EEXIST since kernel refused
to overwrite the existing one in kernel.
This patch checks if we are changing the filter checking NLM_F_CREATE flag
(Sigh, filters don't use NLM_F_REPLACE...) and then passes the boolean down
to actions. This fixes the problem above.
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/cls_rsvp.h')
| -rw-r--r-- | net/sched/cls_rsvp.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/sched/cls_rsvp.h b/net/sched/cls_rsvp.h index 19f8e5dfa8bd..1020e233a5d6 100644 --- a/net/sched/cls_rsvp.h +++ b/net/sched/cls_rsvp.h @@ -415,7 +415,7 @@ static int rsvp_change(struct net *net, struct sk_buff *in_skb, struct tcf_proto *tp, unsigned long base, u32 handle, struct nlattr **tca, - unsigned long *arg) + unsigned long *arg, bool ovr) { struct rsvp_head *data = tp->root; struct rsvp_filter *f, **fp; @@ -436,7 +436,7 @@ static int rsvp_change(struct net *net, struct sk_buff *in_skb, return err; tcf_exts_init(&e, TCA_RSVP_ACT, TCA_RSVP_POLICE); - err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e); + err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e, ovr); if (err < 0) return err; |