Release 4.15 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 (__force __wsum)crc32c((__force __u32)sum, buff, len);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Harvey Harrison | 15 | 40.54% | 1 | 33.33% |
| Daniel Borkmann | 14 | 37.84% | 1 | 33.33% |
| Xin Long | 8 | 21.62% | 1 | 33.33% |
| Total | 37 | 100.00% | 3 | 100.00% |
static inline __wsum sctp_csum_combine(__wsum csum, __wsum csum2,
int offset, int len)
{
return (__force __wsum)__crc32c_le_combine((__force __u32)csum,
(__force __u32)csum2, len);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Vladislav Yasevich | 15 | 36.59% | 2 | 50.00% |
| Daniel Borkmann | 14 | 34.15% | 1 | 25.00% |
| Xin Long | 12 | 29.27% | 1 | 25.00% |
| Total | 41 | 100.00% | 4 | 100.00% |
static inline __le32 sctp_compute_cksum(const struct sk_buff *skb,
unsigned int offset)
{
struct sctphdr *sh = sctp_hdr(skb);
const struct skb_checksum_ops ops = {
.update = sctp_csum_update,
.combine = sctp_csum_combine,
};
__le32 old = sh->checksum;
__wsum new;
sh->checksum = 0;
new = ~__skb_checksum(skb, offset, skb->len - offset, ~(__wsum)0, &ops);
sh->checksum = old;
return cpu_to_le32((__force __u32)new);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Daniel Borkmann | 46 | 45.54% | 1 | 33.33% |
| Joe Stringer | 35 | 34.65% | 1 | 33.33% |
| Xin Long | 20 | 19.80% | 1 | 33.33% |
| Total | 101 | 100.00% | 3 | 100.00% |
#endif /* __sctp_checksum_h__ */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Daniel Borkmann | 86 | 42.79% | 2 | 25.00% |
| Xin Long | 40 | 19.90% | 1 | 12.50% |
| Joe Stringer | 35 | 17.41% | 1 | 12.50% |
| Vladislav Yasevich | 24 | 11.94% | 2 | 25.00% |
| Harvey Harrison | 15 | 7.46% | 1 | 12.50% |
| Jeff Kirsher | 1 | 0.50% | 1 | 12.50% |
| Total | 201 | 100.00% | 8 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.