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262471794d
The checksum calculation header exports a function that refers to struct iov defined in iov.h. Without including the former, build fails like this: In file included from hw/net/fsl_etsec/rings.c:24:0: include/net/checksum.h:51:31: error: ‘struct iovec’ declared inside parameter list [-Werror] include/net/checksum.h:51:31: error: its scope is only this definition or declaration, which is probably not what you want [-Werror] Mention struct iovec there. Reported-by: Alexander Graf <agraf@suse.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
55 lines
1.7 KiB
C
55 lines
1.7 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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struct iovec;
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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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/**
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* net_checksum_add_iov: scatter-gather vector checksumming
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*
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* @iov: input scatter-gather array
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* @iov_cnt: number of array elements
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* @iov_off: starting iov offset for checksumming
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* @size: length of data to be checksummed
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*/
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uint32_t net_checksum_add_iov(const struct iovec *iov,
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const unsigned int iov_cnt,
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uint32_t iov_off, uint32_t size);
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#endif /* QEMU_NET_CHECKSUM_H */
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