diff options
Diffstat (limited to 'ip.h')
| -rw-r--r-- | ip.h | 20 |
1 files changed, 19 insertions, 1 deletions
@@ -24,6 +24,11 @@ #define IN4ADDR_ANY_INIT \ { .s_addr = htonl_constant(INADDR_ANY) } +#define IN4_IS_ADDR_LINKLOCAL(a) \ + ((ntohl(((struct in_addr *)(a))->s_addr) >> 16) == 0xa9fe) +#define IN4_IS_PREFIX_LINKLOCAL(a, len) \ + ((len) >= 16 && IN4_IS_ADDR_LINKLOCAL(a)) + #define L2_BUF_IP4_INIT(proto) \ { \ .version = 4, \ @@ -38,7 +43,11 @@ .daddr = 0, \ } #define L2_BUF_IP4_PSUM(proto) ((uint32_t)htons_constant(0x4500) + \ - (uint32_t)htons_constant(0xff00 | (proto))) + (uint32_t)htons(0xff00 | (proto))) + + +#define IN6_IS_PREFIX_LINKLOCAL(a, len) \ + ((len) >= 10 && IN6_IS_ADDR_LINKLOCAL(a)) #define L2_BUF_IP6_INIT(proto) \ { \ @@ -83,4 +92,13 @@ struct ipv6_opt_hdr { char *ipv6_l4hdr(const struct pool *p, int idx, size_t offset, uint8_t *proto, size_t *dlen); + +/* IPv6 link-local all-nodes multicast adddress, ff02::1 */ +static const struct in6_addr in6addr_ll_all_nodes = { + .s6_addr = { + 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, + }, +}; + #endif /* IP_H */ |