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authorPatrick McHardy <kaber@trash.net>2008-01-23 20:36:45 -0800
committerDavid S. Miller <davem@davemloft.net>2008-01-28 15:11:24 -0800
commit7a9c1bd409d3522806d492aa573c1cc5384ca620 (patch)
tree5226c9086d9f4418f91032bedae11cc0aba9c50d /net/sched/em_meta.c
parent53b2bf3f8a652c9c8e86831f94ae2c5767ea54d7 (diff)
[NET_SCHED]: Use nla_policy for attribute validation in ematches
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/em_meta.c')
-rw-r--r--net/sched/em_meta.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/net/sched/em_meta.c b/net/sched/em_meta.c
index d9f487d813c..a1e5619b187 100644
--- a/net/sched/em_meta.c
+++ b/net/sched/em_meta.c
@@ -745,6 +745,10 @@ static inline int meta_is_supported(struct meta_value *val)
return (!meta_id(val) || meta_ops(val)->get);
}
+static const struct nla_policy meta_policy[TCA_EM_META_MAX + 1] = {
+ [TCA_EM_META_HDR] = { .len = sizeof(struct tcf_meta_hdr) },
+};
+
static int em_meta_change(struct tcf_proto *tp, void *data, int len,
struct tcf_ematch *m)
{
@@ -753,13 +757,12 @@ static int em_meta_change(struct tcf_proto *tp, void *data, int len,
struct tcf_meta_hdr *hdr;
struct meta_match *meta = NULL;
- err = nla_parse(tb, TCA_EM_META_MAX, data, len, NULL);
+ err = nla_parse(tb, TCA_EM_META_MAX, data, len, meta_policy);
if (err < 0)
goto errout;
err = -EINVAL;
- if (tb[TCA_EM_META_HDR] == NULL ||
- nla_len(tb[TCA_EM_META_HDR]) < sizeof(*hdr))
+ if (tb[TCA_EM_META_HDR] == NULL)
goto errout;
hdr = nla_data(tb[TCA_EM_META_HDR]);