diff options
| author | Patrick McHardy <kaber@trash.net> | 2008-01-24 04:36:45 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 23:11:24 (GMT) |
| commit | 7a9c1bd409d3522806d492aa573c1cc5384ca620 (patch) | |
| tree | 5226c9086d9f4418f91032bedae11cc0aba9c50d /net/sched/em_meta.c | |
| parent | 53b2bf3f8a652c9c8e86831f94ae2c5767ea54d7 (diff) | |
| download | linux-7a9c1bd409d3522806d492aa573c1cc5384ca620.tar.xz | |
[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.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/net/sched/em_meta.c b/net/sched/em_meta.c index d9f487d..a1e5619 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]); |