| 32,7 → 32,7 |
|---|
| |
| /** @file |
| * UDP header definition. |
| * Names according to the linux src/include/linux/udp.h header file. |
| * Based on the RFC~768. |
| */ |
| |
| #ifndef __NET_UDP_HEADER_H__ |
| 56,14 → 56,14 |
|---|
| /** Source Port is an optional field, when meaningful, it indicates the port of the sending process, and may be assumed to be the port to which a reply should be addressed in the absence of any other information. |
| * If not used, a value of zero is inserted. |
| */ |
| uint16_t source; |
| uint16_t source_port; |
| /** Destination port has a meaning within the context of a particular internet destination address. |
| */ |
| uint16_t dest; |
| uint16_t destination_port; |
| /** Length is the length in octets of this user datagram including this header and the data. |
| * This means the minimum value of the length is eight. |
| */ |
| uint16_t len; |
| uint16_t total_length; |
| /** Checksum is the 16-bit one's complement of the one's complement sum of a pseudo header of information from the IP header, the UDP header, and the data, padded with zero octets at the end (if necessary) to make a multiple of two octets. |
| * The pseudo header conceptually prefixed to the UDP header contains the source address, the destination address, the protocol, and the UDP length. |
| * This information gives protection against misrouted datagrams. |
| 70,7 → 70,7 |
|---|
| * If the computed checksum is zero, it is transmitted as all ones (the equivalent in one's complement arithmetic). |
| * An all zero transmitted checksum value means that the transmitter generated no checksum (for debugging or for higher level protocols that don't care). |
| */ |
| uint16_t check; |
| uint16_t checksum; |
| } __attribute__ ((packed)); |
| |
| #endif |