Cross Reference: /external/android-clat/translate.c

Lines Matching defs:packet
30  * calculates the checksum over all the packet components starting from pos
31  * checksum - checksum of packet components before pos
32  * packet   - packet to calculate the checksum of
36 uint16_t packet_checksum(uint32_t checksum, clat_packet packet, clat_packet_index pos) {
39     if (packet[i].iov_len > 0) {
40       checksum = ip_checksum_add(checksum, packet[i].iov_base, packet[i].iov_len);
47  * returns the total length of all the packet components after pos
48  * packet - packet to calculate the length of
50  * returns: the total length of the packet components after pos
52 uint16_t packet_length(clat_packet packet, clat_packet_index pos) {
56     len += packet[i].iov_len;
83     // Third party packet. Let the caller deal with it.
94   // Both addresses are in network byte order (addr4 comes from a network packet, and the config
118  * ip_targ     - (ipv4) target packet header, source: original ipv4 addr, dest: local subnet addr
119  * payload_len - length of other data inside packet
121  * old_header  - (ipv6) source packet header, source: nat64 prefix, dest: local subnet prefix
152  * ip6         - (ipv6) target packet header, source: local subnet prefix, dest: nat64 prefix
153  * payload_len - length of other data inside packet
155  * old_header  - (ipv4) source packet header, source: local subnet addr, dest: internet's ipv4 addr
175  * old_header  - (ipv4) source packet header
220  * out          - output packet
221  * icmp         - source packet icmp header
245     // Translate the nested packet (the one that caused the error).
249     // packet that we were asked to translate. This transport length is 20 bytes smaller than it
256     // Ping packet.
275  * out          - output packet
276  * icmp6        - source packet icmp6 header
299     // Translate the nested packet (the one that caused the error).
302     // Ping packet.
320  * takes a generic IP packet and sets it up for translation
321  * out      - output packet
322  * pos      - position in the output packet of the transport header
336  * takes a udp packet and sets it up for translation
337  * out      - output packet
338  * udp      - pointer to udp header in packet
360  * takes a tcp packet and sets it up for translation
361  * out      - output packet
362  * tcp      - pointer to tcp header in packet
395  * common between ipv4/ipv6 - setup checksum and send udp packet
396  * out          - output packet
435  * common between ipv4/ipv6 - setup checksum and send tcp packet
436  * out          - output packet
478   // destination address in the packet header only affects what appears on the wire, not where the
479   // packet is sent to.
493  * takes a packet, translates it, and writes it to fd
494  * fd         - fd to write translated packet to
496  * packet     - packet
497  * packetsize - size of packet
499 void translate_packet(int fd, int to_ipv6, const uint8_t *packet, size_t packetsize) {
502   // Allocate buffers for all packet headers.
524     iov_len = ipv4_packet(out, CLAT_POS_IPHDR, packet, packetsize);
529     iov_len = ipv6_packet(out, CLAT_POS_IPHDR, packet, packetsize);