int family;
struct list_head list;
int rule_size;
+ int addr_size;
int (*action)(struct fib_rule *,
struct flowi *, int,
EXPORT_SYMBOL_GPL(fib_rules_lookup);
+static int validate_rulemsg(struct fib_rule_hdr *frh, struct nlattr **tb,
+ struct fib_rules_ops *ops)
+{
+ int err = -EINVAL;
+
+ if (frh->src_len)
+ if (tb[FRA_SRC] == NULL ||
+ frh->src_len > (ops->addr_size * 8) ||
+ nla_len(tb[FRA_SRC]) != ops->addr_size)
+ goto errout;
+
+ if (frh->dst_len)
+ if (tb[FRA_DST] == NULL ||
+ frh->dst_len > (ops->addr_size * 8) ||
+ nla_len(tb[FRA_DST]) != ops->addr_size)
+ goto errout;
+
+ err = 0;
+errout:
+ return err;
+}
+
int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
{
struct fib_rule_hdr *frh = nlmsg_data(nlh);
if (err < 0)
goto errout;
+ err = validate_rulemsg(frh, tb, ops);
+ if (err < 0)
+ goto errout;
+
rule = kzalloc(ops->rule_size, GFP_KERNEL);
if (rule == NULL) {
err = -ENOMEM;
if (err < 0)
goto errout;
+ err = validate_rulemsg(frh, tb, ops);
+ if (err < 0)
+ goto errout;
+
list_for_each_entry(rule, ops->rules_list, list) {
if (frh->action && (frh->action != rule->action))
continue;
static struct nla_policy dn_fib_rule_policy[FRA_MAX+1] __read_mostly = {
FRA_GENERIC_POLICY,
- [FRA_SRC] = { .type = NLA_U16 },
- [FRA_DST] = { .type = NLA_U16 },
};
static int dn_fib_rule_match(struct fib_rule *rule, struct flowi *fl, int flags)
int err = -EINVAL;
struct dn_fib_rule *r = (struct dn_fib_rule *)rule;
- if (frh->src_len > 16 || frh->dst_len > 16 || frh->tos)
+ if (frh->tos)
goto errout;
if (rule->table == RT_TABLE_UNSPEC) {
}
}
- if (tb[FRA_SRC])
+ if (frh->src_len)
r->src = nla_get_le16(tb[FRA_SRC]);
- if (tb[FRA_DST])
+ if (frh->dst_len)
r->dst = nla_get_le16(tb[FRA_DST]);
r->src_len = frh->src_len;
if (frh->dst_len && (r->dst_len != frh->dst_len))
return 0;
- if (tb[FRA_SRC] && (r->src != nla_get_le16(tb[FRA_SRC])))
+ if (frh->src_len && (r->src != nla_get_le16(tb[FRA_SRC])))
return 0;
- if (tb[FRA_DST] && (r->dst != nla_get_le16(tb[FRA_DST])))
+ if (frh->dst_len && (r->dst != nla_get_le16(tb[FRA_DST])))
return 0;
return 1;
static struct fib_rules_ops dn_fib_rules_ops = {
.family = AF_DECnet,
.rule_size = sizeof(struct dn_fib_rule),
+ .addr_size = sizeof(u16),
.action = dn_fib_rule_action,
.match = dn_fib_rule_match,
.configure = dn_fib_rule_configure,
static struct nla_policy fib4_rule_policy[FRA_MAX+1] __read_mostly = {
FRA_GENERIC_POLICY,
- [FRA_SRC] = { .type = NLA_U32 },
- [FRA_DST] = { .type = NLA_U32 },
[FRA_FLOW] = { .type = NLA_U32 },
};
int err = -EINVAL;
struct fib4_rule *rule4 = (struct fib4_rule *) rule;
- if (frh->src_len > 32 || frh->dst_len > 32 ||
- (frh->tos & ~IPTOS_TOS_MASK))
+ if (frh->tos & ~IPTOS_TOS_MASK)
goto errout;
if (rule->table == RT_TABLE_UNSPEC) {
}
}
- if (tb[FRA_SRC])
+ if (frh->src_len)
rule4->src = nla_get_be32(tb[FRA_SRC]);
- if (tb[FRA_DST])
+ if (frh->dst_len)
rule4->dst = nla_get_be32(tb[FRA_DST]);
#ifdef CONFIG_NET_CLS_ROUTE
return 0;
#endif
- if (tb[FRA_SRC] && (rule4->src != nla_get_be32(tb[FRA_SRC])))
+ if (frh->src_len && (rule4->src != nla_get_be32(tb[FRA_SRC])))
return 0;
- if (tb[FRA_DST] && (rule4->dst != nla_get_be32(tb[FRA_DST])))
+ if (frh->dst_len && (rule4->dst != nla_get_be32(tb[FRA_DST])))
return 0;
return 1;
static struct fib_rules_ops fib4_rules_ops = {
.family = AF_INET,
.rule_size = sizeof(struct fib4_rule),
+ .addr_size = sizeof(u32),
.action = fib4_rule_action,
.match = fib4_rule_match,
.configure = fib4_rule_configure,
static struct nla_policy fib6_rule_policy[FRA_MAX+1] __read_mostly = {
FRA_GENERIC_POLICY,
- [FRA_SRC] = { .len = sizeof(struct in6_addr) },
- [FRA_DST] = { .len = sizeof(struct in6_addr) },
};
static int fib6_rule_configure(struct fib_rule *rule, struct sk_buff *skb,
int err = -EINVAL;
struct fib6_rule *rule6 = (struct fib6_rule *) rule;
- if (frh->src_len > 128 || frh->dst_len > 128)
- goto errout;
-
if (rule->action == FR_ACT_TO_TBL) {
if (rule->table == RT6_TABLE_UNSPEC)
goto errout;
}
}
- if (tb[FRA_SRC])
+ if (frh->src_len)
nla_memcpy(&rule6->src.addr, tb[FRA_SRC],
sizeof(struct in6_addr));
- if (tb[FRA_DST])
+ if (frh->dst_len)
nla_memcpy(&rule6->dst.addr, tb[FRA_DST],
sizeof(struct in6_addr));
if (frh->tos && (rule6->tclass != frh->tos))
return 0;
- if (tb[FRA_SRC] &&
+ if (frh->src_len &&
nla_memcmp(tb[FRA_SRC], &rule6->src.addr, sizeof(struct in6_addr)))
return 0;
- if (tb[FRA_DST] &&
+ if (frh->dst_len &&
nla_memcmp(tb[FRA_DST], &rule6->dst.addr, sizeof(struct in6_addr)))
return 0;
static struct fib_rules_ops fib6_rules_ops = {
.family = AF_INET6,
.rule_size = sizeof(struct fib6_rule),
+ .addr_size = sizeof(struct in6_addr),
.action = fib6_rule_action,
.match = fib6_rule_match,
.configure = fib6_rule_configure,