diff options
Diffstat (limited to 'translate.c')
| -rw-r--r-- | translate.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/translate.c b/translate.c index ddc9bac..bce9270 100644 --- a/translate.c +++ b/translate.c @@ -108,8 +108,8 @@ struct in6_addr ipv4_addr_to_ipv6_addr(uint32_t addr4) { * tun_header - tunnel header, already allocated * proto - ethernet protocol id: ETH_P_IP(ipv4) or ETH_P_IPV6(ipv6) */ -void fill_tun_header(struct tun_pi *tun_header, uint16_t proto) { - tun_header->flags = 0; +void fill_tun_header(struct tun_pi *tun_header, uint16_t proto, uint16_t skip_csum) { + tun_header->flags = htons(skip_csum); tun_header->proto = htons(proto); } @@ -491,8 +491,9 @@ void send_rawv6(int fd, clat_packet out, int iov_len) { * to_ipv6 - true if translating to ipv6, false if translating to ipv4 * packet - packet * packetsize - size of packet + * skip_csum - true if kernel has to skip checksum validation, false if it has to validate checksum. */ -void translate_packet(int fd, int to_ipv6, const uint8_t *packet, size_t packetsize) { +void translate_packet(int fd, int to_ipv6, const uint8_t *packet, size_t packetsize, uint16_t skip_csum) { int iov_len = 0; // Allocate buffers for all packet headers. @@ -524,7 +525,7 @@ void translate_packet(int fd, int to_ipv6, const uint8_t *packet, size_t packets } else { iov_len = ipv6_packet(out, CLAT_POS_IPHDR, packet, packetsize); if (iov_len > 0) { - fill_tun_header(&tun_targ, ETH_P_IP); + fill_tun_header(&tun_targ, ETH_P_IP, skip_csum); out[CLAT_POS_TUNHDR].iov_len = sizeof(tun_targ); send_tun(fd, out, iov_len); } |