Release 4.7 include/net/sctp/checksum.h
/* SCTP kernel reference Implementation
* Copyright (c) 1999-2001 Motorola, Inc.
* Copyright (c) 2001-2003 International Business Machines, Corp.
*
* This file is part of the SCTP kernel reference Implementation
*
* SCTP Checksum functions
*
* The SCTP reference implementation 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; either version 2, or (at your option)
* any later version.
*
* The SCTP reference implementation 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 GNU CC; see the file COPYING. If not, see
* <http://www.gnu.org/licenses/>.
*
* Please send any bug reports or fixes you make to the
* email address(es):
* lksctp developers <linux-sctp@vger.kernel.org>
*
* Written or modified by:
* Dinakaran Joseph
* Jon Grimm <jgrimm@us.ibm.com>
* Sridhar Samudrala <sri@us.ibm.com>
*
* Rewritten to use libcrc32c by:
* Vlad Yasevich <vladislav.yasevich@hp.com>
*/
#ifndef __sctp_checksum_h__
#define __sctp_checksum_h__
#include <linux/types.h>
#include <net/sctp/sctp.h>
#include <linux/crc32c.h>
#include <linux/crc32.h>
static inline __wsum sctp_csum_update(const void *buff, int len, __wsum sum)
{
/* This uses the crypto implementation of crc32c, which is either
* implemented w/ hardware support or resolves to __crc32c_le().
*/
return crc32c(sum, buff, len);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| harvey harrison | harvey harrison | 15 | 51.72% | 1 | 50.00% |
| daniel borkmann | daniel borkmann | 14 | 48.28% | 1 | 50.00% |
| Total | 29 | 100.00% | 2 | 100.00% |
static inline __wsum sctp_csum_combine(__wsum csum, __wsum csum2,
int offset, int len)
{
return __crc32c_le_combine(csum, csum2, len);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| vladislav yasevich | vladislav yasevich | 15 | 51.72% | 1 | 50.00% |
| daniel borkmann | daniel borkmann | 14 | 48.28% | 1 | 50.00% |
| Total | 29 | 100.00% | 2 | 100.00% |
static inline __le32 sctp_compute_cksum(const struct sk_buff *skb,
unsigned int offset)
{
struct sctphdr *sh = sctp_hdr(skb);
__le32 ret, old = sh->checksum;
const struct skb_checksum_ops ops = {
.update = sctp_csum_update,
.combine = sctp_csum_combine,
};
sh->checksum = 0;
ret = cpu_to_le32(~__skb_checksum(skb, offset, skb->len - offset,
~(__u32)0, &ops));
sh->checksum = old;
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| daniel borkmann | daniel borkmann | 59 | 61.46% | 1 | 50.00% |
| joe stringer | joe stringer | 37 | 38.54% | 1 | 50.00% |
| Total | 96 | 100.00% | 2 | 100.00% |
#endif /* __sctp_checksum_h__ */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| daniel borkmann | daniel borkmann | 99 | 56.25% | 2 | 33.33% |
| joe stringer | joe stringer | 37 | 21.02% | 1 | 16.67% |
| vladislav yasevich | vladislav yasevich | 24 | 13.64% | 1 | 16.67% |
| harvey harrison | harvey harrison | 15 | 8.52% | 1 | 16.67% |
| jeff kirsher | jeff kirsher | 1 | 0.57% | 1 | 16.67% |
| Total | 176 | 100.00% | 6 | 100.00% |
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