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| author | Patrick McHardy <kaber@trash.net> | 2008-01-23 20:35:39 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 15:11:22 -0800 |
| commit | 27a3421e4821734bc19496faa77b380605dc3b23 (patch) | |
| tree | f9ded49845a39f41352ed09130bf3d2bd05e4ffe /net/sched/sch_cbq.c | |
| parent | 5feb5e1aaa887f6427b8290bce48bfb6b7010fc6 (diff) | |
| download | linux-3.10-27a3421e4821734bc19496faa77b380605dc3b23.tar.gz linux-3.10-27a3421e4821734bc19496faa77b380605dc3b23.tar.bz2 linux-3.10-27a3421e4821734bc19496faa77b380605dc3b23.zip | |
[NET_SCHED]: Use nla_policy for attribute validation in packet schedulers
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_cbq.c')
| -rw-r--r-- | net/sched/sch_cbq.c | 47 |
1 files changed, 13 insertions, 34 deletions
diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c index da0f6c0152d..09969c1fbc0 100644 --- a/net/sched/sch_cbq.c +++ b/net/sched/sch_cbq.c @@ -1377,6 +1377,16 @@ static int cbq_set_fopt(struct cbq_class *cl, struct tc_cbq_fopt *fopt) return 0; } +static const struct nla_policy cbq_policy[TCA_CBQ_MAX + 1] = { + [TCA_CBQ_LSSOPT] = { .len = sizeof(struct tc_cbq_lssopt) }, + [TCA_CBQ_WRROPT] = { .len = sizeof(struct tc_cbq_wrropt) }, + [TCA_CBQ_FOPT] = { .len = sizeof(struct tc_cbq_fopt) }, + [TCA_CBQ_OVL_STRATEGY] = { .len = sizeof(struct tc_cbq_ovl) }, + [TCA_CBQ_RATE] = { .len = sizeof(struct tc_ratespec) }, + [TCA_CBQ_RTAB] = { .type = NLA_BINARY, .len = TC_RTAB_SIZE }, + [TCA_CBQ_POLICE] = { .len = sizeof(struct tc_cbq_police) }, +}; + static int cbq_init(struct Qdisc *sch, struct nlattr *opt) { struct cbq_sched_data *q = qdisc_priv(sch); @@ -1384,16 +1394,11 @@ static int cbq_init(struct Qdisc *sch, struct nlattr *opt) struct tc_ratespec *r; int err; - err = nla_parse_nested(tb, TCA_CBQ_MAX, opt, NULL); + err = nla_parse_nested(tb, TCA_CBQ_MAX, opt, cbq_policy); if (err < 0) return err; - if (tb[TCA_CBQ_RTAB] == NULL || tb[TCA_CBQ_RATE] == NULL || - nla_len(tb[TCA_CBQ_RATE]) < sizeof(struct tc_ratespec)) - return -EINVAL; - - if (tb[TCA_CBQ_LSSOPT] && - nla_len(tb[TCA_CBQ_LSSOPT]) < sizeof(struct tc_cbq_lssopt)) + if (tb[TCA_CBQ_RTAB] == NULL || tb[TCA_CBQ_RATE] == NULL) return -EINVAL; r = nla_data(tb[TCA_CBQ_RATE]); @@ -1771,36 +1776,10 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **t if (opt == NULL) return -EINVAL; - err = nla_parse_nested(tb, TCA_CBQ_MAX, opt, NULL); + err = nla_parse_nested(tb, TCA_CBQ_MAX, opt, cbq_policy); if (err < 0) return err; - if (tb[TCA_CBQ_OVL_STRATEGY] && - nla_len(tb[TCA_CBQ_OVL_STRATEGY]) < sizeof(struct tc_cbq_ovl)) - return -EINVAL; - - if (tb[TCA_CBQ_FOPT] && - nla_len(tb[TCA_CBQ_FOPT]) < sizeof(struct tc_cbq_fopt)) - return -EINVAL; - - if (tb[TCA_CBQ_RATE] && - nla_len(tb[TCA_CBQ_RATE]) < sizeof(struct tc_ratespec)) - return -EINVAL; - - if (tb[TCA_CBQ_LSSOPT] && - nla_len(tb[TCA_CBQ_LSSOPT]) < sizeof(struct tc_cbq_lssopt)) - return -EINVAL; - - if (tb[TCA_CBQ_WRROPT] && - nla_len(tb[TCA_CBQ_WRROPT]) < sizeof(struct tc_cbq_wrropt)) - return -EINVAL; - -#ifdef CONFIG_NET_CLS_ACT - if (tb[TCA_CBQ_POLICE] && - nla_len(tb[TCA_CBQ_POLICE]) < sizeof(struct tc_cbq_police)) - return -EINVAL; -#endif - if (cl) { /* Check parent */ if (parentid) { |