net_sched actions: use nla_parse_nested()

Use nla_parse_nested instead of open-coding the call to
nla_parse() with the attribute data/len.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index a512b18..f893d18 100644 (file)
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -1028,8 +1028,7 @@ static struct nlattr *find_dump_kind(const struct nlmsghdr *n)
 
        if (tb[1] == NULL)
                return NULL;
-       if (nla_parse(tb2, TCA_ACT_MAX, nla_data(tb[1]),
-                     nla_len(tb[1]), NULL) < 0)
+       if (nla_parse_nested(tb2, TCA_ACT_MAX, tb[1], NULL) < 0)
                return NULL;
        kind = tb2[TCA_ACT_KIND];