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5acf5ea4bc
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>
42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
/*
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* IP checksumming functions.
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* (c) 2008 Gerd Hoffmann <kraxel@redhat.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; under version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef QEMU_NET_CHECKSUM_H
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#define QEMU_NET_CHECKSUM_H
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#include <stdint.h>
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uint32_t net_checksum_add_cont(int len, uint8_t *buf, int seq);
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uint16_t net_checksum_finish(uint32_t sum);
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uint16_t net_checksum_tcpudp(uint16_t length, uint16_t proto,
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uint8_t *addrs, uint8_t *buf);
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void net_checksum_calculate(uint8_t *data, int length);
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static inline uint32_t
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net_checksum_add(int len, uint8_t *buf)
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{
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return net_checksum_add_cont(len, buf, 0);
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}
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static inline uint16_t
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net_raw_checksum(uint8_t *data, int length)
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{
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return net_checksum_finish(net_checksum_add(length, data));
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}
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#endif /* QEMU_NET_CHECKSUM_H */
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