From: Tóth László Attila <panther@xxxxxxxxxx> Address type search can be limited to any interface by inet_addr_type_on_dev function. Signed-off-by: Laszlo Attila Toth <panther@xxxxxxxxxx> --- include/net/route.h | 1 + net/ipv4/fib_frontend.c | 21 +++++++++++++++++++-- 2 files changed, 20 insertions(+), 2 deletions(-) diff --git a/include/net/route.h b/include/net/route.h index f7ce625..4a0e3bc 100644 --- a/include/net/route.h +++ b/include/net/route.h @@ -119,6 +119,7 @@ extern unsigned short ip_rt_frag_needed(struct iphdr *iph, unsigned short new_mt extern void ip_rt_send_redirect(struct sk_buff *skb); extern unsigned inet_addr_type(__be32 addr); +extern unsigned inet_addr_type_on_dev(__be32 addr, const struct net_device *on_dev); extern void ip_rt_multicast_event(struct in_device *); extern int ip_rt_ioctl(unsigned int cmd, void __user *arg); extern void ip_rt_get_source(u8 *src, struct rtable *rt); diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c index eff6bce..9d93a20 100644 --- a/net/ipv4/fib_frontend.c +++ b/net/ipv4/fib_frontend.c @@ -145,7 +145,11 @@ out: return dev; } -unsigned inet_addr_type(__be32 addr) +/* + * Find address type as if only "on_dev" was present in the system. If + * on_dev is NULL then all interfaces are taken into consideration. + */ +static inline unsigned __inet_addr_type_on_dev(__be32 addr, const struct net_device *on_dev) { struct flowi fl = { .nl_u = { .ip4_u = { .daddr = addr } } }; struct fib_result res; @@ -164,13 +168,25 @@ unsigned inet_addr_type(__be32 addr) ret = RTN_UNICAST; if (!ip_fib_local_table->tb_lookup(ip_fib_local_table, &fl, &res)) { - ret = res.type; + if ((!on_dev || on_dev == res.fi->fib_dev)) { + ret = res.type; + } fib_res_put(&res); } } return ret; } +unsigned inet_addr_type(__be32 addr) +{ + return __inet_addr_type_on_dev(addr, NULL); +} + +unsigned inet_addr_type_on_dev(__be32 addr, const struct net_device *on_dev) +{ + return __inet_addr_type_on_dev(addr, on_dev); +} + /* Given (packet source, input interface) and optional (dst, oif, tos): - (main) check, that source is valid i.e. not broadcast or our local address. @@ -922,4 +938,5 @@ void __init ip_fib_init(void) } EXPORT_SYMBOL(inet_addr_type); +EXPORT_SYMBOL(inet_addr_type_on_dev); EXPORT_SYMBOL(ip_dev_find); -- 1.5.2.5 - To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html