From 53b2bf3f8a652c9c8e86831f94ae2c5767ea54d7 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Wed, 23 Jan 2008 20:36:30 -0800 Subject: [NET_SCHED]: Use nla_policy for attribute validation in actions Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- net/sched/act_nat.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'net/sched/act_nat.c') diff --git a/net/sched/act_nat.c b/net/sched/act_nat.c index 5a512d4dc37c..0a3c8339767a 100644 --- a/net/sched/act_nat.c +++ b/net/sched/act_nat.c @@ -40,6 +40,10 @@ static struct tcf_hashinfo nat_hash_info = { .lock = &nat_lock, }; +static const struct nla_policy nat_policy[TCA_NAT_MAX + 1] = { + [TCA_NAT_PARMS] = { .len = sizeof(struct tc_nat) }, +}; + static int tcf_nat_init(struct nlattr *nla, struct nlattr *est, struct tc_action *a, int ovr, int bind) { @@ -52,12 +56,11 @@ static int tcf_nat_init(struct nlattr *nla, struct nlattr *est, if (nla == NULL) return -EINVAL; - err = nla_parse_nested(tb, TCA_NAT_MAX, nla, NULL); + err = nla_parse_nested(tb, TCA_NAT_MAX, nla, nat_policy); if (err < 0) return err; - if (tb[TCA_NAT_PARMS] == NULL || - nla_len(tb[TCA_NAT_PARMS]) < sizeof(*parm)) + if (tb[TCA_NAT_PARMS] == NULL) return -EINVAL; parm = nla_data(tb[TCA_NAT_PARMS]); -- cgit v1.2.3-59-g8ed1b