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net_sched: add missing tcf_lock for act_connmark 

According to the new locking rule, we have to take tcf_lock
for both ->init() and ->dump(), as RTNL will be removed.
However, it is missing for act_connmark.

Cc: Vlad Buslov <vladbu@mellanox.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Cong Wang 2018-08-29 10:15:36 -07:00 committed by David S. Miller
parent aa4e689ed1
commit 506a03aa04
1 changed files with 8 additions and 3 deletions
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11
net/sched/act_connmark.c
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@ -143,8 +143,10 @@ static int tcf_connmark_init(struct net *net, struct nlattr *nla,
return -EEXIST;
}
/* replacing action and zone */
spin_lock_bh(&ci->tcf_lock);
ci->tcf_action = parm->action;
ci->zone = parm->zone;
spin_unlock_bh(&ci->tcf_lock);
ret = 0;
}
@ -156,16 +158,16 @@ static inline int tcf_connmark_dump(struct sk_buff *skb, struct tc_action *a,
{
unsigned char *b = skb_tail_pointer(skb);
struct tcf_connmark_info *ci = to_connmark(a);
struct tc_connmark opt = {
.index = ci->tcf_index,
.refcnt = refcount_read(&ci->tcf_refcnt) - ref,
.bindcnt = atomic_read(&ci->tcf_bindcnt) - bind,
.action = ci->tcf_action,
.zone = ci->zone,
};
struct tcf_t t;
spin_lock_bh(&ci->tcf_lock);
opt.action = ci->tcf_action;
opt.zone = ci->zone;
if (nla_put(skb, TCA_CONNMARK_PARMS, sizeof(opt), &opt))
goto nla_put_failure;
@ -173,9 +175,12 @@ static inline int tcf_connmark_dump(struct sk_buff *skb, struct tc_action *a,
if (nla_put_64bit(skb, TCA_CONNMARK_TM, sizeof(t), &t,
TCA_CONNMARK_PAD))
goto nla_put_failure;
spin_unlock_bh(&ci->tcf_lock);
return skb->len;
nla_put_failure:
spin_unlock_bh(&ci->tcf_lock);
nlmsg_trim(skb, b);
return -1;
}