8402630169
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com> Signed-off-by: Yan Vugenfirer <yan@daynix.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
/*
|
|
* IP checksumming functions.
|
|
* (c) 2008 Gerd Hoffmann <kraxel@redhat.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; under version 2 of the License.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef QEMU_NET_CHECKSUM_H
|
|
#define QEMU_NET_CHECKSUM_H
|
|
|
|
#include <stdint.h>
|
|
|
|
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));
|
|
}
|
|
|
|
/**
|
|
* net_checksum_add_iov: scatter-gather vector checksumming
|
|
*
|
|
* @iov: input scatter-gather array
|
|
* @iov_cnt: number of array elements
|
|
* @iov_off: starting iov offset for checksumming
|
|
* @size: length of data to be checksummed
|
|
*/
|
|
uint32_t net_checksum_add_iov(const struct iovec *iov,
|
|
const unsigned int iov_cnt,
|
|
uint32_t iov_off, uint32_t size);
|
|
|
|
#endif /* QEMU_NET_CHECKSUM_H */
|