* Ville Nuorvala <vnuorval@tcs.hut.fi>
*/
-#include <linux/config.h>
#include <linux/netdevice.h>
#include <net/fib_rules.h>
#include <net/ipv6.h>
+#include <net/addrconf.h>
#include <net/ip6_route.h>
#include <net/netlink.h>
struct fib_rule common;
struct rt6key src;
struct rt6key dst;
-#ifdef CONFIG_IPV6_ROUTE_FWMARK
- u32 fwmark;
- u32 fwmask;
-#endif
u8 tclass;
};
fib_rule_put(arg.rule);
if (arg.result)
- return (struct dst_entry *) arg.result;
+ return arg.result;
dst_hold(&ip6_null_entry.u.dst);
return &ip6_null_entry.u.dst;
if (table)
rt = lookup(table, flp, flags);
- if (rt != &ip6_null_entry)
+ if (rt != &ip6_null_entry) {
+ struct fib6_rule *r = (struct fib6_rule *)rule;
+
+ /*
+ * If we need to find a source address for this traffic,
+ * we check the result if it meets requirement of the rule.
+ */
+ if ((rule->flags & FIB_RULE_FIND_SADDR) &&
+ r->src.plen && !(flags & RT6_LOOKUP_F_HAS_SADDR)) {
+ struct in6_addr saddr;
+ if (ipv6_get_saddr(&rt->u.dst, &flp->fl6_dst,
+ &saddr))
+ goto again;
+ if (!ipv6_prefix_equal(&saddr, &r->src.addr,
+ r->src.plen))
+ goto again;
+ ipv6_addr_copy(&flp->fl6_src, &saddr);
+ }
goto out;
+ }
+again:
dst_release(&rt->u.dst);
rt = NULL;
goto out;
{
struct fib6_rule *r = (struct fib6_rule *) rule;
- if (!ipv6_prefix_equal(&fl->fl6_dst, &r->dst.addr, r->dst.plen))
+ if (r->dst.plen &&
+ !ipv6_prefix_equal(&fl->fl6_dst, &r->dst.addr, r->dst.plen))
return 0;
- if ((flags & RT6_LOOKUP_F_HAS_SADDR) &&
- !ipv6_prefix_equal(&fl->fl6_src, &r->src.addr, r->src.plen))
- return 0;
+ /*
+ * If FIB_RULE_FIND_SADDR is set and we do not have a
+ * source address for the traffic, we defer check for
+ * source address.
+ */
+ if (r->src.plen) {
+ if (flags & RT6_LOOKUP_F_HAS_SADDR) {
+ if (!ipv6_prefix_equal(&fl->fl6_src, &r->src.addr,
+ r->src.plen))
+ return 0;
+ } else if (!(r->common.flags & FIB_RULE_FIND_SADDR))
+ return 0;
+ }
if (r->tclass && r->tclass != ((ntohl(fl->fl6_flowlabel) >> 20) & 0xff))
return 0;
-#ifdef CONFIG_IPV6_ROUTE_FWMARK
- if ((r->fwmark ^ fl->fl6_fwmark) & r->fwmask)
- return 0;
-#endif
-
return 1;
}
static struct nla_policy fib6_rule_policy[FRA_MAX+1] __read_mostly = {
- [FRA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 },
- [FRA_PRIORITY] = { .type = NLA_U32 },
- [FRA_SRC] = { .len = sizeof(struct in6_addr) },
- [FRA_DST] = { .len = sizeof(struct in6_addr) },
- [FRA_FWMARK] = { .type = NLA_U32 },
- [FRA_FWMASK] = { .type = NLA_U32 },
- [FRA_TABLE] = { .type = NLA_U32 },
+ FRA_GENERIC_POLICY,
};
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 ||
- (frh->tos & ~IPV6_FLOWINFO_MASK))
- 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));
-#ifdef CONFIG_IPV6_ROUTE_FWMARK
- if (tb[FRA_FWMARK]) {
- rule6->fwmark = nla_get_u32(tb[FRA_FWMARK]);
- if (rule6->fwmark) {
- /*
- * if the mark value is non-zero,
- * all bits are compared by default
- * unless a mask is explicitly specified.
- */
- rule6->fwmask = 0xFFFFFFFF;
- }
- }
-
- if (tb[FRA_FWMASK])
- rule6->fwmask = nla_get_u32(tb[FRA_FWMASK]);
-#endif
-
rule6->src.plen = frh->src_len;
rule6->dst.plen = frh->dst_len;
rule6->tclass = frh->tos;
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;
-#ifdef CONFIG_IPV6_ROUTE_FWMARK
- if (tb[FRA_FWMARK] && (rule6->fwmark != nla_get_u32(tb[FRA_FWMARK])))
- return 0;
-
- if (tb[FRA_FWMASK] && (rule6->fwmask != nla_get_u32(tb[FRA_FWMASK])))
- return 0;
-#endif
-
return 1;
}
NLA_PUT(skb, FRA_SRC, sizeof(struct in6_addr),
&rule6->src.addr);
-#ifdef CONFIG_IPV6_ROUTE_FWMARK
- if (rule6->fwmark)
- NLA_PUT_U32(skb, FRA_FWMARK, rule6->fwmark);
-
- if (rule6->fwmask || rule6->fwmark)
- NLA_PUT_U32(skb, FRA_FWMASK, rule6->fwmask);
-#endif
-
return 0;
nla_put_failure:
return -ENOBUFS;
}
-int fib6_rules_dump(struct sk_buff *skb, struct netlink_callback *cb)
+static u32 fib6_rule_default_pref(void)
{
- return fib_rules_dump(skb, cb, AF_INET6);
+ return 0x3FFF;
}
-static u32 fib6_rule_default_pref(void)
+static size_t fib6_rule_nlmsg_payload(struct fib_rule *rule)
{
- return 0x3FFF;
+ return nla_total_size(16) /* dst */
+ + nla_total_size(16); /* src */
}
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,
.compare = fib6_rule_compare,
.fill = fib6_rule_fill,
.default_pref = fib6_rule_default_pref,
+ .nlmsg_payload = fib6_rule_nlmsg_payload,
.nlgroup = RTNLGRP_IPV6_RULE,
.policy = fib6_rule_policy,
.rules_list = &fib6_rules,
git.openpandora.org / pandora-kernel.git / blobdiff