From: Jamal Hadi Salim <hadi@cyberus.ca>
Date: Wed, 13 Aug 2008 09:41:22 +0000 (-0700)
Subject: net-sched: Fix actions flushing
X-Git-Tag: Ubuntu-5.13.0-19.19~40156^2~33
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=f97017cdefefdb6a0e19266024b0c6f9fd411eeb;p=mirror_ubuntu-jammy-kernel.git

net-sched: Fix actions flushing

Flushing of actions has been broken since we changed
the semantics of netlink parsed tb[X] to mean X is an attribute type.
This makes the flushing work.

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 26c7e1f9a350..88b57331d130 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -790,6 +790,8 @@ static int tca_action_flush(struct nlattr *nla, struct nlmsghdr *n, u32 pid)
 	err = a->ops->walk(skb, &dcb, RTM_DELACTION, a);
 	if (err < 0)
 		goto nla_put_failure;
+	if (err == 0)
+		goto noflush_out;
 
 	nla_nest_end(skb, nest);
 
@@ -807,6 +809,7 @@ nla_put_failure:
 nlmsg_failure:
 	module_put(a->ops->owner);
 err_out:
+noflush_out:
 	kfree_skb(skb);
 	kfree(a);
 	return err;
@@ -824,8 +827,10 @@ tca_action_gd(struct nlattr *nla, struct nlmsghdr *n, u32 pid, int event)
 		return ret;
 
 	if (event == RTM_DELACTION && n->nlmsg_flags&NLM_F_ROOT) {
-		if (tb[0] != NULL && tb[1] == NULL)
-			return tca_action_flush(tb[0], n, pid);
+		if (tb[1] != NULL)
+			return tca_action_flush(tb[1], n, pid);
+		else
+			return -EINVAL;
 	}
 
 	for (i = 1; i <= TCA_ACT_MAX_PRIO && tb[i]; i++) {