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| author | Patrick McHardy <kaber@trash.net> | 2008-01-23 20:36:45 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 15:11:24 -0800 |
| commit | 7a9c1bd409d3522806d492aa573c1cc5384ca620 (patch) | |
| tree | 5226c9086d9f4418f91032bedae11cc0aba9c50d /net/sched | |
| parent | 53b2bf3f8a652c9c8e86831f94ae2c5767ea54d7 (diff) | |
| download | linux-7a9c1bd409d3522806d492aa573c1cc5384ca620.tar.gz linux-7a9c1bd409d3522806d492aa573c1cc5384ca620.tar.bz2 linux-7a9c1bd409d3522806d492aa573c1cc5384ca620.zip | |
[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')
| -rw-r--r-- | net/sched/em_meta.c | 9 | ||||
| -rw-r--r-- | net/sched/ematch.c | 11 |
2 files changed, 12 insertions, 8 deletions
diff --git a/net/sched/em_meta.c b/net/sched/em_meta.c index d9f487d813c4..a1e5619b1876 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]); diff --git a/net/sched/ematch.c b/net/sched/ematch.c index daa9c4e7e81d..74ff918455a2 100644 --- a/net/sched/ematch.c +++ b/net/sched/ematch.c @@ -282,6 +282,11 @@ errout: return err; } +static const struct nla_policy em_policy[TCA_EMATCH_TREE_MAX + 1] = { + [TCA_EMATCH_TREE_HDR] = { .len = sizeof(struct tcf_ematch_tree_hdr) }, + [TCA_EMATCH_TREE_LIST] = { .type = NLA_NESTED }, +}; + /** * tcf_em_tree_validate - validate ematch config TLV and build ematch tree * @@ -312,7 +317,7 @@ int tcf_em_tree_validate(struct tcf_proto *tp, struct nlattr *nla, return 0; } - err = nla_parse_nested(tb, TCA_EMATCH_TREE_MAX, nla, NULL); + err = nla_parse_nested(tb, TCA_EMATCH_TREE_MAX, nla, em_policy); if (err < 0) goto errout; @@ -323,10 +328,6 @@ int tcf_em_tree_validate(struct tcf_proto *tp, struct nlattr *nla, if (rt_hdr == NULL || rt_list == NULL) goto errout; - if (nla_len(rt_hdr) < sizeof(*tree_hdr) || - nla_len(rt_list) < sizeof(*rt_match)) - goto errout; - tree_hdr = nla_data(rt_hdr); memcpy(&tree->hdr, tree_hdr, sizeof(*tree_hdr)); |