diff options
Diffstat (limited to 'ipv6.c')
| -rw-r--r-- | ipv6.c | 9 |
1 files changed, 5 insertions, 4 deletions
@@ -88,7 +88,7 @@ int ipv6_packet(clat_packet out, int pos, const char *packet, size_t len) { uint8_t protocol; const char *next_header; size_t len_left; - uint32_t checksum; + uint32_t old_sum, new_sum; int iov_len; if(len < sizeof(struct ip6_hdr)) { @@ -133,16 +133,17 @@ int ipv6_packet(clat_packet out, int pos, const char *packet, size_t len) { out[pos].iov_len = sizeof(struct iphdr); // Calculate the pseudo-header checksum. - checksum = ipv4_pseudo_header_checksum(0, ip_targ, len_left); + old_sum = ipv6_pseudo_header_checksum(0, ip6, len_left); + new_sum = ipv4_pseudo_header_checksum(0, ip_targ, len_left); // does not support IPv6 extension headers, this will drop any packet with them if (protocol == IPPROTO_ICMP) { iov_len = icmp6_packet(out, pos + 1, (const struct icmp6_hdr *) next_header, len_left); } else if (ip6->ip6_nxt == IPPROTO_TCP) { - iov_len = tcp_packet(out, pos + 1, (const struct tcphdr *) next_header, checksum, + iov_len = tcp_packet(out, pos + 1, (const struct tcphdr *) next_header, old_sum, new_sum, len_left); } else if (ip6->ip6_nxt == IPPROTO_UDP) { - iov_len = udp_packet(out, pos + 1, (const struct udphdr *) next_header, checksum, + iov_len = udp_packet(out, pos + 1, (const struct udphdr *) next_header, old_sum, new_sum, len_left); } else if (ip6->ip6_nxt == IPPROTO_GRE) { iov_len = generic_packet(out, pos + 1, next_header, len_left); |