diff options
| author | Patrick McHardy <kaber@trash.net> | 2008-01-24 07:36:12 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-29 02:11:23 +0300 |
| commit | 6fa8c0144b770dac941cf2c15053b6e24f046c8a (patch) | |
| tree | 7c91cd0e9a98f0532df30a9d8549e2c76a3ce716 /net/sched/cls_u32.c | |
| parent | 27a3421e4821734bc19496faa77b380605dc3b23 (diff) | |
| download | linux-6fa8c0144b770dac941cf2c15053b6e24f046c8a.tar.xz | |
[NET_SCHED]: Use nla_policy for attribute validation in classifiers
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/cls_u32.c')
| -rw-r--r-- | net/sched/cls_u32.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c index a4e72e8a882f..e8a775689123 100644 --- a/net/sched/cls_u32.c +++ b/net/sched/cls_u32.c @@ -460,6 +460,16 @@ static u32 gen_new_kid(struct tc_u_hnode *ht, u32 handle) return handle|(i>0xFFF ? 0xFFF : i); } +static const struct nla_policy u32_policy[TCA_U32_MAX + 1] = { + [TCA_U32_CLASSID] = { .type = NLA_U32 }, + [TCA_U32_HASH] = { .type = NLA_U32 }, + [TCA_U32_LINK] = { .type = NLA_U32 }, + [TCA_U32_DIVISOR] = { .type = NLA_U32 }, + [TCA_U32_SEL] = { .len = sizeof(struct tc_u32_sel) }, + [TCA_U32_INDEV] = { .type = NLA_STRING, .len = IFNAMSIZ }, + [TCA_U32_MARK] = { .len = sizeof(struct tc_u32_mark) }, +}; + static int u32_set_parms(struct tcf_proto *tp, unsigned long base, struct tc_u_hnode *ht, struct tc_u_knode *n, struct nlattr **tb, @@ -531,7 +541,7 @@ static int u32_change(struct tcf_proto *tp, unsigned long base, u32 handle, if (opt == NULL) return handle ? -EINVAL : 0; - err = nla_parse_nested(tb, TCA_U32_MAX, opt, NULL); + err = nla_parse_nested(tb, TCA_U32_MAX, opt, u32_policy); if (err < 0) return err; @@ -593,8 +603,7 @@ static int u32_change(struct tcf_proto *tp, unsigned long base, u32 handle, } else handle = gen_new_kid(ht, htid); - if (tb[TCA_U32_SEL] == NULL || - nla_len(tb[TCA_U32_SEL]) < sizeof(struct tc_u32_sel)) + if (tb[TCA_U32_SEL] == NULL) return -EINVAL; s = nla_data(tb[TCA_U32_SEL]); @@ -620,13 +629,6 @@ static int u32_change(struct tcf_proto *tp, unsigned long base, u32 handle, if (tb[TCA_U32_MARK]) { struct tc_u32_mark *mark; - if (nla_len(tb[TCA_U32_MARK]) < sizeof(struct tc_u32_mark)) { -#ifdef CONFIG_CLS_U32_PERF - kfree(n->pf); -#endif - kfree(n); - return -EINVAL; - } mark = nla_data(tb[TCA_U32_MARK]); memcpy(&n->mark, mark, sizeof(struct tc_u32_mark)); n->mark.success = 0; |