/* 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);
}

static inline __wsum sctp_csum_combine(__wsum csum, __wsum csum2,
				       int offset, int len)
{
	return __crc32c_le_combine(csum, csum2, len);
}

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;
}

#endif /* __sctp_checksum_h__ */

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<div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='3ce0e65eb6059d3d4e56bbb17aee34f2740844be'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Andrew Lunn &lt;andrew@lunn.ch&gt;</td><td class='right'>2016-12-03 04:45:20 +0100</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2016-12-03 23:18:39 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=3ce0e65eb6059d3d4e56bbb17aee34f2740844be'>3ce0e65eb6059d3d4e56bbb17aee34f2740844be</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=3ce0e65eb6059d3d4e56bbb17aee34f2740844be'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=3ce0e65eb6059d3d4e56bbb17aee34f2740844be'>02e5db05670f241cae197d0a98afac0f29d08961</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=b35d322a1d9330597754d5e8d5f76932fad79c1a'>b35d322a1d9330597754d5e8d5f76932fad79c1a</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=3ce0e65eb6059d3d4e56bbb17aee34f2740844be&amp;id2=b35d322a1d9330597754d5e8d5f76932fad79c1a'>diff</a>)</td></tr></table>
<div class='commit-subject'>net: dsa: mv88e6xxx: Implement mv88e6390 pause control</div><div class='commit-msg'>The mv88e6390 has a number flow control registers accessed via the
Flow Control register. Use these to set the pause control.

Signed-off-by: Andrew Lunn &lt;andrew@lunn.ch&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=3ce0e65eb6059d3d4e56bbb17aee34f2740844be'>Diffstat</a></div><table summary='diffstat' class='diffstat'>