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| author | Dmitry Fleytman <dmitry@daynix.com> | 2013-03-09 11:21:02 +0200 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2013-03-25 11:13:09 +0100 |
| commit | 5acf5ea4bc1535657692c509092caddec3d719ff (patch) | |
| tree | a8e2197110557aab3f55c1021997e0d14af10dc1 /include | |
| parent | 20048d0a12b1080f688ff9b82696134df1aa3607 (diff) | |
| download | qemu-5acf5ea4bc1535657692c509092caddec3d719ff.tar.gz qemu-5acf5ea4bc1535657692c509092caddec3d719ff.tar.bz2 qemu-5acf5ea4bc1535657692c509092caddec3d719ff.zip | |
Checksum-related utility functions
net_checksum_add_cont()
checksum calculation for scattered data with odd chunk sizes
net_raw_checksum()
checksum calculation for a buffer
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Yan Vugenfirer <yan@daynix.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/checksum.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/include/net/checksum.h b/include/net/checksum.h index 1f052986e6..3e7b93d094 100644 --- a/include/net/checksum.h +++ b/include/net/checksum.h @@ -20,10 +20,22 @@ #include <stdint.h> -uint32_t net_checksum_add(int len, uint8_t *buf); +uint32_t net_checksum_add_cont(int len, uint8_t *buf, int seq); uint16_t net_checksum_finish(uint32_t sum); uint16_t net_checksum_tcpudp(uint16_t length, uint16_t proto, uint8_t *addrs, uint8_t *buf); void net_checksum_calculate(uint8_t *data, int length); +static inline uint32_t +net_checksum_add(int len, uint8_t *buf) +{ + return net_checksum_add_cont(len, buf, 0); +} + +static inline uint16_t +net_raw_checksum(uint8_t *data, int length) +{ + return net_checksum_finish(net_checksum_add(length, data)); +} + #endif /* QEMU_NET_CHECKSUM_H */ |