diff options
Diffstat (limited to 'util.h')
| -rw-r--r-- | util.h | 59 |
1 files changed, 59 insertions, 0 deletions
@@ -52,6 +52,64 @@ void debug(const char *format, ...); #define NS_FN_STACK_SIZE (RLIMIT_STACK_VAL * 1024 / 4) +#if __BYTE_ORDER == __BIG_ENDIAN +#define L2_BUF_ETH_IP4_INIT \ + { \ + .h_dest = { 0 }, \ + .h_source = { 0 }, \ + .h_proto = ETH_P_IP, \ + } +#else +#define L2_BUF_ETH_IP4_INIT \ + { \ + .h_dest = { 0 }, \ + .h_source = { 0 }, \ + .h_proto = __bswap_constant_16(ETH_P_IP), \ + } +#endif + +#if __BYTE_ORDER == __BIG_ENDIAN +#define L2_BUF_ETH_IP6_INIT \ + { \ + .h_dest = { 0 }, \ + .h_source = { 0 }, \ + .h_proto = ETH_P_IPV6, \ + } +#else +#define L2_BUF_ETH_IP6_INIT \ + { \ + .h_dest = { 0 }, \ + .h_source = { 0 }, \ + .h_proto = __bswap_constant_16(ETH_P_IPV6), \ + } +#endif + +#define L2_BUF_IP4_INIT(proto) \ + { \ + .version = 4, \ + .ihl = 5, \ + .tos = 0, \ + .tot_len = 0, \ + .id = 0, \ + .frag_off = 0, \ + .ttl = 255, \ + .protocol = (proto), \ + .saddr = 0, \ + .daddr = 0, \ + } + +#define L2_BUF_IP6_INIT(proto) \ + { \ + .priority = 0, \ + .version = 6, \ + .flow_lbl = { 0 }, \ + .payload_len = 0, \ + .nexthdr = (proto), \ + .hop_limit = 255, \ + .saddr = IN6ADDR_ANY_INIT, \ + .daddr = IN6ADDR_ANY_INIT, \ + } + #include <linux/ipv6.h> #include <net/if.h> #include <linux/ip.h> @@ -59,6 +117,7 @@ void debug(const char *format, ...); struct ctx; +uint32_t sum_16b(void *buf, size_t len); uint16_t csum_fold(uint32_t sum); uint16_t csum_ip4(void *buf, size_t len); void csum_tcp4(struct iphdr *iph); |