diff options
| author | Jiri Pirko <jiri@mellanox.com> | 2019-06-17 18:02:32 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-06-17 23:05:32 +0200 |
| commit | f517f2716c34087ca15a36e9f13dbca8bd2e3ffc (patch) | |
| tree | c2e5b2c354efec574b0852a692caadd6b5389f32 /net/sched/cls_matchall.c | |
| parent | net: hns3: fix dereference of ae_dev before it is null checked (diff) | |
| download | linux-f517f2716c34087ca15a36e9f13dbca8bd2e3ffc.tar.xz linux-f517f2716c34087ca15a36e9f13dbca8bd2e3ffc.zip | |
net: sched: cls_matchall: allow to delete filter
Currently user is unable to delete the filter. See following example:
$ tc filter add dev ens16np1 ingress pref 1 handle 1 matchall action drop
$ tc filter show dev ens16np1 ingress
filter protocol all pref 1 matchall chain 0
filter protocol all pref 1 matchall chain 0 handle 0x1
in_hw
action order 1: gact action drop
random type none pass val 0
index 1 ref 1 bind 1
$ tc filter del dev ens16np1 ingress pref 1 handle 1 matchall action drop
RTNETLINK answers: Operation not supported
Implement tcf_proto_ops->delete() op and allow user to delete the filter.
Reported-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | net/sched/cls_matchall.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/net/sched/cls_matchall.c b/net/sched/cls_matchall.c index 38c0a9f0f296..a30d2f8feb32 100644 --- a/net/sched/cls_matchall.c +++ b/net/sched/cls_matchall.c @@ -21,6 +21,7 @@ struct cls_mall_head { unsigned int in_hw_count; struct tc_matchall_pcnt __percpu *pf; struct rcu_work rwork; + bool deleting; }; static int mall_classify(struct sk_buff *skb, const struct tcf_proto *tp, @@ -258,7 +259,11 @@ err_exts_init: static int mall_delete(struct tcf_proto *tp, void *arg, bool *last, bool rtnl_held, struct netlink_ext_ack *extack) { - return -EOPNOTSUPP; + struct cls_mall_head *head = rtnl_dereference(tp->root); + + head->deleting = true; + *last = true; + return 0; } static void mall_walk(struct tcf_proto *tp, struct tcf_walker *arg, @@ -269,7 +274,7 @@ static void mall_walk(struct tcf_proto *tp, struct tcf_walker *arg, if (arg->count < arg->skip) goto skip; - if (!head) + if (!head || head->deleting) return; if (arg->fn(tp, head, arg) < 0) arg->stop = 1; |