diff options
Diffstat (limited to 'libnet/src')
| -rw-r--r-- | libnet/src/libnet_checksum.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/libnet/src/libnet_checksum.c b/libnet/src/libnet_checksum.c index 07799ad..098b1f3 100644 --- a/libnet/src/libnet_checksum.c +++ b/libnet/src/libnet_checksum.c @@ -189,7 +189,6 @@ libnet_inet_checksum(libnet_t *l, uint8_t *iphdr, int protocol, int h_len, const struct libnet_ipv6_hdr *ip6h_p = NULL; /* default to not using IPv6 */ int ip_hl = 0; int sum = 0; - int is_ipv6 = 0; /* TODO - remove this, it is redundant with ip6h_p */ /* Check for memory under/over reads/writes. */ if(iphdr < beg || (iphdr+sizeof(*iph_p)) > end) @@ -267,7 +266,7 @@ libnet_inet_checksum(libnet_t *l, uint8_t *iphdr, int protocol, int h_len, const * + the TCP header (with checksum set to zero) and data */ tcph_p->th_sum = 0; - if (is_ipv6) + if (ip6h_p) { sum = libnet_in_cksum((uint16_t *)&ip6h_p->ip_src, 32); } @@ -298,7 +297,7 @@ libnet_inet_checksum(libnet_t *l, uint8_t *iphdr, int protocol, int h_len, const CHECK_IP_PAYLOAD_SIZE(); udph_p->uh_sum = 0; - if (is_ipv6) + if (ip6h_p) { sum = libnet_in_cksum((uint16_t *)&ip6h_p->ip_src, 32); } @@ -324,7 +323,7 @@ libnet_inet_checksum(libnet_t *l, uint8_t *iphdr, int protocol, int h_len, const /* Hm, is this valid? Is the checksum algorithm for ICMPv6 encapsulated in IPv4 * actually defined? */ - if (is_ipv6) + if (ip6h_p) { sum = libnet_in_cksum((uint16_t *)&ip6h_p->ip_src, 32); sum += ntohs(IPPROTO_ICMP6 + h_len); @@ -343,7 +342,7 @@ libnet_inet_checksum(libnet_t *l, uint8_t *iphdr, int protocol, int h_len, const CHECK_IP_PAYLOAD_SIZE(); icmph_p->icmp_sum = 0; - if (is_ipv6) + if (ip6h_p) { sum = libnet_in_cksum((uint16_t *)&ip6h_p->ip_src, 32); sum += ntohs(IPPROTO_ICMP6 + h_len); |