From 1a29321ed045e3aad23c5f7b63036e465ee3093a Mon Sep 17 00:00:00 2001 From: Jamal Hadi Salim Date: Mon, 23 Dec 2013 08:02:11 -0500 Subject: net_sched: act: Dont increment refcnt on replace This is a bug fix. The existing code tries to kill many birds with one stone: Handling binding of actions to filters, new actions and replacing of action attributes. A simple test case to illustrate: XXXX moja@fe1:~$ sudo tc actions add action drop index 12 moja@fe1:~$ actions get action gact index 12 action order 1: gact action drop random type none pass val 0 index 12 ref 1 bind 0 moja@fe1:~$ sudo tc actions replace action ok index 12 moja@fe1:~$ actions get action gact index 12 action order 1: gact action drop random type none pass val 0 index 12 ref 2 bind 0 XXXX The above shows the refcounf being wrongly incremented on replace. There are more complex scenarios with binding of actions to filters that i am leaving out that didnt work as well... Signed-off-by: Jamal Hadi Salim Signed-off-by: David S. Miller --- net/sched/act_ipt.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'net/sched/act_ipt.c') diff --git a/net/sched/act_ipt.c b/net/sched/act_ipt.c index 882a89762f77..dcbfe8ce04a6 100644 --- a/net/sched/act_ipt.c +++ b/net/sched/act_ipt.c @@ -141,10 +141,12 @@ static int tcf_ipt_init(struct net *net, struct nlattr *nla, struct nlattr *est, return PTR_ERR(pc); ret = ACT_P_CREATED; } else { - if (!ovr) { - tcf_ipt_release(to_ipt(pc), bind); + if (bind)/* dont override defaults */ + return 0; + tcf_ipt_release(to_ipt(pc), bind); + + if (!ovr) return -EEXIST; - } } ipt = to_ipt(pc); -- cgit v1.2.3