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[/] [or1k_soc_on_altera_embedded_dev_kit/] [trunk/] [linux-2.6/] [linux-2.6.24/] [net/] [ipv6/] [addrconf_core.c] - Blame information for rev 3

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/*
 * IPv6 library code, needed by static components when full IPv6 support is
 * not configured or static.
 */
 
#include <net/ipv6.h>
 
#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 ((st & htonl(0xFE000000)) == htonl(0xFC000000))
                return (IPV6_ADDR_UNICAST |
                        IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_GLOBAL));                  /* RFC 4193 */
 
        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 */
}
EXPORT_SYMBOL(__ipv6_addr_type);
 

Line No.	Rev	Author	Line
1	3	xianfeng	`/*`
2			`* IPv6 library code, needed by static components when full IPv6 support is`
3			`* not configured or static.`
4			`*/`
5
6			`#include <net/ipv6.h>`
7
8			`#define IPV6_ADDR_SCOPE_TYPE(scope) ((scope) << 16)`
9
10			`static inline unsigned ipv6_addr_scope2type(unsigned scope)`
11			`{`
12			`switch(scope) {`
13			`case IPV6_ADDR_SCOPE_NODELOCAL:`
14			`return (IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_NODELOCAL) \|`
15			`IPV6_ADDR_LOOPBACK);`
16			`case IPV6_ADDR_SCOPE_LINKLOCAL:`
17			`return (IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_LINKLOCAL) \|`
18			`IPV6_ADDR_LINKLOCAL);`
19			`case IPV6_ADDR_SCOPE_SITELOCAL:`
20			`return (IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_SITELOCAL) \|`
21			`IPV6_ADDR_SITELOCAL);`
22			`}`
23			`return IPV6_ADDR_SCOPE_TYPE(scope);`
24			`}`
25
26			`int __ipv6_addr_type(const struct in6_addr *addr)`
27			`{`
28			`__be32 st;`
29
30			`st = addr->s6_addr32[0];`
31
32			`/* Consider all addresses with the first three bits different of`
33			`000 and 111 as unicasts.`
34			`*/`
35			`if ((st & htonl(0xE0000000)) != htonl(0x00000000) &&`
36			`(st & htonl(0xE0000000)) != htonl(0xE0000000))`
37			`return (IPV6_ADDR_UNICAST \|`
38			`IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_GLOBAL));`
39
40			`if ((st & htonl(0xFF000000)) == htonl(0xFF000000)) {`
41			`/* multicast */`
42			`/* addr-select 3.1 */`
43			`return (IPV6_ADDR_MULTICAST \|`
44			`ipv6_addr_scope2type(IPV6_ADDR_MC_SCOPE(addr)));`
45			`}`
46
47			`if ((st & htonl(0xFFC00000)) == htonl(0xFE800000))`
48			`return (IPV6_ADDR_LINKLOCAL \| IPV6_ADDR_UNICAST \|`
49			`IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_LINKLOCAL)); /* addr-select 3.1 */`
50			`if ((st & htonl(0xFFC00000)) == htonl(0xFEC00000))`
51			`return (IPV6_ADDR_SITELOCAL \| IPV6_ADDR_UNICAST \|`
52			`IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_SITELOCAL)); /* addr-select 3.1 */`
53			`if ((st & htonl(0xFE000000)) == htonl(0xFC000000))`
54			`return (IPV6_ADDR_UNICAST \|`
55			`IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_GLOBAL)); /* RFC 4193 */`
56
57			`if ((addr->s6_addr32[0] \| addr->s6_addr32[1]) == 0) {`
58			`if (addr->s6_addr32[2] == 0) {`
59			`if (addr->s6_addr32[3] == 0)`
60			`return IPV6_ADDR_ANY;`
61
62			`if (addr->s6_addr32[3] == htonl(0x00000001))`
63			`return (IPV6_ADDR_LOOPBACK \| IPV6_ADDR_UNICAST \|`
64			`IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_LINKLOCAL)); /* addr-select 3.4 */`
65
66			`return (IPV6_ADDR_COMPATv4 \| IPV6_ADDR_UNICAST \|`
67			`IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_GLOBAL)); /* addr-select 3.3 */`
68			`}`
69
70			`if (addr->s6_addr32[2] == htonl(0x0000ffff))`
71			`return (IPV6_ADDR_MAPPED \|`
72			`IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_GLOBAL)); /* addr-select 3.3 */`
73			`}`
74
75			`return (IPV6_ADDR_RESERVED \|`
76			`IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_GLOBAL)); /* addr-select 3.4 */`
77			`}`
78			`EXPORT_SYMBOL(__ipv6_addr_type);`
79

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[/] [or1k_soc_on_altera_embedded_dev_kit/] [trunk/] [linux-2.6/] [linux-2.6.24/] [net/] [ipv6/] [addrconf_core.c] - Blame information for rev 3