diff options
Diffstat (limited to 'net/sched/act_ipt.c')
-rw-r--r-- | net/sched/act_ipt.c | 55 |
1 files changed, 32 insertions, 23 deletions
diff --git a/net/sched/act_ipt.c b/net/sched/act_ipt.c index fa006e0..da696fd 100644 --- a/net/sched/act_ipt.c +++ b/net/sched/act_ipt.c @@ -92,10 +92,17 @@ static int tcf_ipt_release(struct tcf_ipt *ipt, int bind) return ret; } -static int tcf_ipt_init(struct rtattr *rta, struct rtattr *est, +static const struct nla_policy ipt_policy[TCA_IPT_MAX + 1] = { + [TCA_IPT_TABLE] = { .type = NLA_STRING, .len = IFNAMSIZ }, + [TCA_IPT_HOOK] = { .type = NLA_U32 }, + [TCA_IPT_INDEX] = { .type = NLA_U32 }, + [TCA_IPT_TARG] = { .len = sizeof(struct ipt_entry_target) }, +}; + +static int tcf_ipt_init(struct nlattr *nla, struct nlattr *est, struct tc_action *a, int ovr, int bind) { - struct rtattr *tb[TCA_IPT_MAX]; + struct nlattr *tb[TCA_IPT_MAX + 1]; struct tcf_ipt *ipt; struct tcf_common *pc; struct ipt_entry_target *td, *t; @@ -104,22 +111,24 @@ static int tcf_ipt_init(struct rtattr *rta, struct rtattr *est, u32 hook = 0; u32 index = 0; - if (rta == NULL || rtattr_parse_nested(tb, TCA_IPT_MAX, rta) < 0) + if (nla == NULL) return -EINVAL; - if (tb[TCA_IPT_HOOK-1] == NULL || - RTA_PAYLOAD(tb[TCA_IPT_HOOK-1]) < sizeof(u32)) + err = nla_parse_nested(tb, TCA_IPT_MAX, nla, ipt_policy); + if (err < 0) + return err; + + if (tb[TCA_IPT_HOOK] == NULL) return -EINVAL; - if (tb[TCA_IPT_TARG-1] == NULL || - RTA_PAYLOAD(tb[TCA_IPT_TARG-1]) < sizeof(*t)) + if (tb[TCA_IPT_TARG] == NULL) return -EINVAL; - td = (struct ipt_entry_target *)RTA_DATA(tb[TCA_IPT_TARG-1]); - if (RTA_PAYLOAD(tb[TCA_IPT_TARG-1]) < td->u.target_size) + + td = (struct ipt_entry_target *)nla_data(tb[TCA_IPT_TARG]); + if (nla_len(tb[TCA_IPT_TARG]) < td->u.target_size) return -EINVAL; - if (tb[TCA_IPT_INDEX-1] != NULL && - RTA_PAYLOAD(tb[TCA_IPT_INDEX-1]) >= sizeof(u32)) - index = *(u32 *)RTA_DATA(tb[TCA_IPT_INDEX-1]); + if (tb[TCA_IPT_INDEX] != NULL) + index = nla_get_u32(tb[TCA_IPT_INDEX]); pc = tcf_hash_check(index, a, bind, &ipt_hash_info); if (!pc) { @@ -136,14 +145,14 @@ static int tcf_ipt_init(struct rtattr *rta, struct rtattr *est, } ipt = to_ipt(pc); - hook = *(u32 *)RTA_DATA(tb[TCA_IPT_HOOK-1]); + hook = nla_get_u32(tb[TCA_IPT_HOOK]); err = -ENOMEM; tname = kmalloc(IFNAMSIZ, GFP_KERNEL); if (unlikely(!tname)) goto err1; - if (tb[TCA_IPT_TABLE - 1] == NULL || - rtattr_strlcpy(tname, tb[TCA_IPT_TABLE-1], IFNAMSIZ) >= IFNAMSIZ) + if (tb[TCA_IPT_TABLE] == NULL || + nla_strlcpy(tname, tb[TCA_IPT_TABLE], IFNAMSIZ) >= IFNAMSIZ) strcpy(tname, "mangle"); t = kmemdup(td, td->u.target_size, GFP_KERNEL); @@ -243,25 +252,25 @@ static int tcf_ipt_dump(struct sk_buff *skb, struct tc_action *a, int bind, int t = kmemdup(ipt->tcfi_t, ipt->tcfi_t->u.user.target_size, GFP_ATOMIC); if (unlikely(!t)) - goto rtattr_failure; + goto nla_put_failure; c.bindcnt = ipt->tcf_bindcnt - bind; c.refcnt = ipt->tcf_refcnt - ref; strcpy(t->u.user.name, ipt->tcfi_t->u.kernel.target->name); - RTA_PUT(skb, TCA_IPT_TARG, ipt->tcfi_t->u.user.target_size, t); - RTA_PUT(skb, TCA_IPT_INDEX, 4, &ipt->tcf_index); - RTA_PUT(skb, TCA_IPT_HOOK, 4, &ipt->tcfi_hook); - RTA_PUT(skb, TCA_IPT_CNT, sizeof(struct tc_cnt), &c); - RTA_PUT(skb, TCA_IPT_TABLE, IFNAMSIZ, ipt->tcfi_tname); + NLA_PUT(skb, TCA_IPT_TARG, ipt->tcfi_t->u.user.target_size, t); + NLA_PUT_U32(skb, TCA_IPT_INDEX, ipt->tcf_index); + NLA_PUT_U32(skb, TCA_IPT_HOOK, ipt->tcfi_hook); + NLA_PUT(skb, TCA_IPT_CNT, sizeof(struct tc_cnt), &c); + NLA_PUT_STRING(skb, TCA_IPT_TABLE, ipt->tcfi_tname); tm.install = jiffies_to_clock_t(jiffies - ipt->tcf_tm.install); tm.lastuse = jiffies_to_clock_t(jiffies - ipt->tcf_tm.lastuse); tm.expires = jiffies_to_clock_t(ipt->tcf_tm.expires); - RTA_PUT(skb, TCA_IPT_TM, sizeof (tm), &tm); + NLA_PUT(skb, TCA_IPT_TM, sizeof (tm), &tm); kfree(t); return skb->len; -rtattr_failure: +nla_put_failure: nlmsg_trim(skb, b); kfree(t); return -1; |