Lines Matching full:checksum

2  * 4.4-Lite-2 Internet checksum routine, modified to take a vector of
47  * Checksum routine for Internet Protocol family headers (Portable Version).
151  * Given the host-byte-order value of the checksum field in a packet
152  * header, and the network-byte-order computed checksum of the data
153  * that the checksum covers (including the checksum itself), compute
154  * what the checksum field *should* have been.
162 	 * The value that should have gone into the checksum field  in in_cksum_shouldbe()
164 	 * *but* the checksum field.  in in_cksum_shouldbe()
166 	 * We can compute that by subtracting the value of the checksum  in in_cksum_shouldbe()
170 	 * "sum" is the value of the checksum field, and "computed_sum"  in in_cksum_shouldbe()
181 	 * As RFC 1071 notes, the checksum can be computed without  in in_cksum_shouldbe()
183 	 * on a big-endian machine gives a big-endian checksum, which  in in_cksum_shouldbe()
184 	 * can be directly stuffed into the big-endian checksum fields  in in_cksum_shouldbe()
186 	 * machine gives a little-endian checksum, which must be  in in_cksum_shouldbe()
187 	 * byte-swapped before being stuffed into a big-endian checksum  in in_cksum_shouldbe()
192 	 * host-byte-order value from the header; the adjusted checksum  in in_cksum_shouldbe()