diff options
Diffstat (limited to 'translate.h')
| -rw-r--r-- | translate.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/translate.h b/translate.h index 3378254..5efa817 100644 --- a/translate.h +++ b/translate.h @@ -36,9 +36,11 @@ // The CLAT_POS_XXX constants represent the array indices within the clat_packet that contain // specific parts of the packet. The packet_* functions operate on all the packet segments past a // given position. -enum clat_packet_index { CLAT_POS_TUNHDR, CLAT_POS_IPHDR, CLAT_POS_TRANSPORTHDR, - CLAT_POS_ICMPERR_IPHDR, CLAT_POS_ICMPERR_TRANSPORTHDR, - CLAT_POS_PAYLOAD, CLAT_POS_MAX }; +enum clat_packet_index { + CLAT_POS_TUNHDR, CLAT_POS_IPHDR, CLAT_POS_FRAGHDR, CLAT_POS_TRANSPORTHDR, + CLAT_POS_ICMPERR_IPHDR, CLAT_POS_ICMPERR_FRAGHDR, CLAT_POS_ICMPERR_TRANSPORTHDR, + CLAT_POS_PAYLOAD, CLAT_POS_MAX +}; typedef struct iovec clat_packet[CLAT_POS_MAX]; // Calculates the checksum over all the packet components starting from pos. @@ -65,6 +67,11 @@ void translate_packet(const struct tun_data *tunnel, struct tun_pi *tun_header, int ipv4_packet(clat_packet out, int pos, const char *packet, size_t len); int ipv6_packet(clat_packet out, int pos, const char *packet, size_t len); +// Deal with fragmented packets. +size_t maybe_fill_frag_header(struct ip6_frag *frag_hdr, struct ip6_hdr *ip6_targ, + const struct iphdr *old_header); +uint8_t parse_frag_header(const struct ip6_frag *frag_hdr, struct iphdr *ip_targ); + // Translate ICMP packets. int icmp_to_icmp6(clat_packet out, int pos, const struct icmphdr *icmp, uint32_t checksum, const char *payload, size_t payload_size); |