From 8c14b7ce22a7ddd9fe1b1c852c4015633ec3efec Mon Sep 17 00:00:00 2001 From: YOSHIFUJI Hideaki Date: Thu, 22 Feb 2007 02:25:42 +0900 Subject: [IPV6] ADDRCONF: Statically link __ipv6_addr_type() for sunrpc subsystem. Link __ipv6_addr_type() statically for sunrpc code even if IPv6 is built as module. Signed-off-by: YOSHIFUJI Hidaki --- net/ipv6/addrconf_core.c | 75 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 net/ipv6/addrconf_core.c (limited to 'net/ipv6/addrconf_core.c') diff --git a/net/ipv6/addrconf_core.c b/net/ipv6/addrconf_core.c new file mode 100644 index 000000000000..644e0c742f99 --- /dev/null +++ b/net/ipv6/addrconf_core.c @@ -0,0 +1,75 @@ +/* + * IPv6 library code, needed by static components when full IPv6 support is + * not configured or static. + */ + +#include + +#define IPV6_ADDR_SCOPE_TYPE(scope) ((scope) << 16) + +static inline unsigned ipv6_addr_scope2type(unsigned scope) +{ + switch(scope) { + case IPV6_ADDR_SCOPE_NODELOCAL: + return (IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_NODELOCAL) | + IPV6_ADDR_LOOPBACK); + case IPV6_ADDR_SCOPE_LINKLOCAL: + return (IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_LINKLOCAL) | + IPV6_ADDR_LINKLOCAL); + case IPV6_ADDR_SCOPE_SITELOCAL: + return (IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_SITELOCAL) | + IPV6_ADDR_SITELOCAL); + } + return IPV6_ADDR_SCOPE_TYPE(scope); +} + +int __ipv6_addr_type(const struct in6_addr *addr) +{ + __be32 st; + + st = addr->s6_addr32[0]; + + /* Consider all addresses with the first three bits different of + 000 and 111 as unicasts. + */ + if ((st & htonl(0xE0000000)) != htonl(0x00000000) && + (st & htonl(0xE0000000)) != htonl(0xE0000000)) + return (IPV6_ADDR_UNICAST | + IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_GLOBAL)); + + if ((st & htonl(0xFF000000)) == htonl(0xFF000000)) { + /* multicast */ + /* addr-select 3.1 */ + return (IPV6_ADDR_MULTICAST | + ipv6_addr_scope2type(IPV6_ADDR_MC_SCOPE(addr))); + } + + if ((st & htonl(0xFFC00000)) == htonl(0xFE800000)) + return (IPV6_ADDR_LINKLOCAL | IPV6_ADDR_UNICAST | + IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_LINKLOCAL)); /* addr-select 3.1 */ + if ((st & htonl(0xFFC00000)) == htonl(0xFEC00000)) + return (IPV6_ADDR_SITELOCAL | IPV6_ADDR_UNICAST | + IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_SITELOCAL)); /* addr-select 3.1 */ + + if ((addr->s6_addr32[0] | addr->s6_addr32[1]) == 0) { + if (addr->s6_addr32[2] == 0) { + if (addr->s6_addr32[3] == 0) + return IPV6_ADDR_ANY; + + if (addr->s6_addr32[3] == htonl(0x00000001)) + return (IPV6_ADDR_LOOPBACK | IPV6_ADDR_UNICAST | + IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_LINKLOCAL)); /* addr-select 3.4 */ + + return (IPV6_ADDR_COMPATv4 | IPV6_ADDR_UNICAST | + IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_GLOBAL)); /* addr-select 3.3 */ + } + + if (addr->s6_addr32[2] == htonl(0x0000ffff)) + return (IPV6_ADDR_MAPPED | + IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_GLOBAL)); /* addr-select 3.3 */ + } + + return (IPV6_ADDR_RESERVED | + IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_GLOBAL)); /* addr-select 3.4 */ +} + -- cgit v1.2.3-59-g8ed1b