diff options
| author | YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org> | 2013-01-20 07:39:00 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-01-20 22:29:49 -0500 |
| commit | ca97a644d752b46e5e08526e36705c3b0dd03f5f (patch) | |
| tree | 2c36826f1f6e843a5bd5c0d20831290649bbca56 | |
| parent | b27b28cb445975dc02d2e7d9437d23af76a51571 (diff) | |
| download | linux-3.10-ca97a644d752b46e5e08526e36705c3b0dd03f5f.tar.gz linux-3.10-ca97a644d752b46e5e08526e36705c3b0dd03f5f.tar.bz2 linux-3.10-ca97a644d752b46e5e08526e36705c3b0dd03f5f.zip | |
ipv6: Introduce ipv6_addr_is_solict_mult() to check Solicited Node Multicast Addresses.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/addrconf.h | 8 | ||||
| -rw-r--r-- | net/ipv6/ndisc.c | 6 |
2 files changed, 9 insertions, 5 deletions
diff --git a/include/net/addrconf.h b/include/net/addrconf.h index c6a44213fc7..3a3eeb407f4 100644 --- a/include/net/addrconf.h +++ b/include/net/addrconf.h @@ -305,6 +305,14 @@ static inline bool ipv6_addr_is_isatap(const struct in6_addr *addr) return (addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE); } +static inline bool ipv6_addr_is_solict_mult(const struct in6_addr *addr) +{ + return (addr->s6_addr32[0] == htonl(0xff020000) && + addr->s6_addr32[1] == htonl(0x00000000) && + addr->s6_addr32[2] == htonl(0x00000001) && + addr->s6_addr[12] == 0xff); +} + #ifdef CONFIG_PROC_FS extern int if6_proc_init(void); extern void if6_proc_exit(void); diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index 350f86005c1..903191adb5c 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -685,11 +685,7 @@ static void ndisc_recv_ns(struct sk_buff *skb) * RFC2461 7.1.1: * DAD has to be destined for solicited node multicast address. */ - if (dad && - !(daddr->s6_addr32[0] == htonl(0xff020000) && - daddr->s6_addr32[1] == htonl(0x00000000) && - daddr->s6_addr32[2] == htonl(0x00000001) && - daddr->s6_addr [12] == 0xff )) { + if (dad && !ipv6_addr_is_solict_mult(daddr)) { ND_PRINTK(2, warn, "NS: bad DAD packet (wrong destination)\n"); return; } |