/*
 * netsniff-ng - the packet sniffing beast
 * Copyright 2012 Markus Amend <markus@netsniff-ng.org>, Deutsche Flugsicherung GmbH
 * Subject to the GPL, version 2.
 *
 * IPv6 No Next Header described in RFC2460
 */

#include <stdio.h>
#include <stdint.h>
#include <netinet/in.h>    /* for ntohs() */

#include "proto.h"
#include "dissector_eth.h"
#include "built_in.h"

static void no_next_header(struct pkt_buff *pkt __maybe_unused)
{
	/*
	 * The value 59 in the Next Header field of an IPv6 header or any
	 * extension header indicates that there is nothing following that
	 * header.  If the Payload Length field of the IPv6 header indicates the
	 * presence of octets past the end of a header whose Next Header field
	 * contains 59, those octets must be ignored, and passed on unchanged if
	 * the packet is forwarded.
	 */
	tprintf(" [ No Next Header");
	tprintf(" ]\n");
}

static void no_next_header_less(struct pkt_buff *pkt __maybe_unused)
{
	tprintf(" No Next Header");
}

struct protocol ipv6_no_next_header_ops = {
	.key = 0x3B,
	.print_full = no_next_header,
	.print_less = no_next_header_less,
};
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<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=4a6b27b79da5ccc6b85dc05bbe6a091e58be896a'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=4a6b27b79da5ccc6b85dc05bbe6a091e58be896a'>Documentation</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='4a6b27b79da5ccc6b85dc05bbe6a091e58be896a'/><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>Josh Poimboeuf &lt;jpoimboe@redhat.com&gt;</td><td class='right'>2016-05-16 15:16:18 -0500</td></tr>
<tr><th>committer</th><td>Herbert Xu &lt;herbert@gondor.apana.org.au&gt;</td><td class='right'>2016-05-17 14:26:52 +0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=4a6b27b79da5ccc6b85dc05bbe6a091e58be896a'>4a6b27b79da5ccc6b85dc05bbe6a091e58be896a</a> (<a href='/cgit.cgi/linux/net-next.git/patch/Documentation?id=4a6b27b79da5ccc6b85dc05bbe6a091e58be896a'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=4a6b27b79da5ccc6b85dc05bbe6a091e58be896a'>3b6c2e16d410844d288165218e62c037cb0e8ca3</a> /<a href='/cgit.cgi/linux/net-next.git/tree/Documentation?id=4a6b27b79da5ccc6b85dc05bbe6a091e58be896a'>Documentation</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=256b1cfb9a346bb4808cd27b7b8f9b120f96491e'>256b1cfb9a346bb4808cd27b7b8f9b120f96491e</a> (<a href='/cgit.cgi/linux/net-next.git/diff/Documentation?id=4a6b27b79da5ccc6b85dc05bbe6a091e58be896a&amp;id2=256b1cfb9a346bb4808cd27b7b8f9b120f96491e'>diff</a>)</td></tr></table>
<div class='commit-subject'>crypto: sha1-mb - make sha1_x8_avx2() conform to C function ABI</div><div class='commit-msg'>Megha Dey reported a kernel panic in crypto code.  The problem is that
sha1_x8_avx2() clobbers registers r12-r15 without saving and restoring
them.

Before commit aec4d0e301f1 ("x86/asm/crypto: Simplify stack usage in
sha-mb functions"), those registers were saved and restored by the
callers of the function.  I removed them with that commit because I
didn't realize sha1_x8_avx2() clobbered them.

Fix the potential undefined behavior associated with clobbering the
registers and make the behavior less surprising by changing the
registers to be callee saved/restored to conform with the C function
call ABI.

Also, rdx (aka RSP_SAVE) doesn't need to be saved: I verified that none
of the callers rely on it being saved, and it's not a callee-saved
register in the C ABI.

Fixes: aec4d0e301f1 ("x86/asm/crypto: Simplify stack usage in sha-mb functions")
Cc: stable@vger.kernel.org # 4.6
Reported-by: Megha Dey &lt;megha.dey@linux.intel.com&gt;
Signed-off-by: Josh Poimboeuf &lt;jpoimboe@redhat.com&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=4a6b27b79da5ccc6b85dc05bbe6a091e58be896a'>Diffstat</a> (limited to 'Documentation')</div><table summary='diffstat' class='diffstat'>