From: Jamal Hadi Salim Date: Tue, 10 May 2016 20:49:29 +0000 (-0400) Subject: net sched: simple action fix late binding X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0e5538ab2b59ec205411949d839de6dbab663730;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git net sched: simple action fix late binding The process below was broken and is fixed with this patch. //add a simple action and give it an instance id of 1 sudo tc actions add action simple sdata "foobar" index 1 //create a filter which binds to simple 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 simple index 1 Message before fix was: RTNETLINK answers: Invalid argument We have an error talking to the kernel Signed-off-by: Jamal Hadi Salim Reviewed-by: Cong Wang Signed-off-by: David S. Miller --- diff --git a/net/sched/act_simple.c b/net/sched/act_simple.c index 75b2be13fbcc..3a33fb648a6d 100644 --- a/net/sched/act_simple.c +++ b/net/sched/act_simple.c @@ -87,7 +87,7 @@ static int tcf_simp_init(struct net *net, struct nlattr *nla, struct tc_defact *parm; struct tcf_defact *d; char *defdata; - int ret = 0, err; + int ret = 0, err, exists = 0; if (nla == NULL) return -EINVAL; @@ -99,13 +99,21 @@ static int tcf_simp_init(struct net *net, struct nlattr *nla, if (tb[TCA_DEF_PARMS] == NULL) return -EINVAL; - if (tb[TCA_DEF_DATA] == NULL) - return -EINVAL; parm = nla_data(tb[TCA_DEF_PARMS]); + exists = tcf_hash_check(tn, parm->index, a, bind); + if (exists && bind) + return 0; + + if (tb[TCA_DEF_DATA] == NULL) { + if (exists) + tcf_hash_release(a, bind); + return -EINVAL; + } + defdata = nla_data(tb[TCA_DEF_DATA]); - if (!tcf_hash_check(tn, parm->index, a, bind)) { + if (!exists) { ret = tcf_hash_create(tn, parm->index, est, a, sizeof(*d), bind, false); if (ret) @@ -122,8 +130,6 @@ static int tcf_simp_init(struct net *net, struct nlattr *nla, } else { d = to_defact(a); - if (bind) - return 0; tcf_hash_release(a, bind); if (!ovr) return -EEXIST;