/*
 * Copyright 2003-2004, Instant802 Networks, Inc.
 * Copyright 2006, Devicescape Software, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef AES_CCM_H
#define AES_CCM_H

#include <linux/crypto.h>

#define CCM_AAD_LEN	32

struct crypto_aead *ieee80211_aes_key_setup_encrypt(const u8 key[],
						    size_t key_len,
						    size_t mic_len);
int ieee80211_aes_ccm_encrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
			      u8 *data, size_t data_len, u8 *mic,
			      size_t mic_len);
int ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
			      u8 *data, size_t data_len, u8 *mic,
			      size_t mic_len);
void ieee80211_aes_key_free(struct crypto_aead *tfm);

#endif /* AES_CCM_H */
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=39715bf972ed4fee18fe5409609a971fb16b1771'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=39715bf972ed4fee18fe5409609a971fb16b1771'>Documentation</a>/<a href='/cgit.cgi/linux/net-next.git/commit/Documentation/acpi?id=39715bf972ed4fee18fe5409609a971fb16b1771'>acpi</a>/<a href='/cgit.cgi/linux/net-next.git/commit/Documentation/acpi/method-tracing.txt?id=39715bf972ed4fee18fe5409609a971fb16b1771'>method-tracing.txt</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='39715bf972ed4fee18fe5409609a971fb16b1771'/><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>Valentin Rothberg &lt;valentinrothberg@gmail.com&gt;</td><td class='right'>2016-10-05 07:57:26 +0200</td></tr>
<tr><th>committer</th><td>Michael Ellerman &lt;mpe@ellerman.id.au&gt;</td><td class='right'>2016-10-27 21:52:59 +1100</td></tr>
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<div class='commit-subject'>powerpc/process: Fix CONFIG_ALIVEC typo in restore_tm_state()</div><div class='commit-msg'>It should be ALTIVEC, not ALIVEC.

Cyril explains: If a thread performs a transaction with altivec and then
gets preempted for whatever reason, this bug may cause the kernel to not
re-enable altivec when that thread runs again. This will result in an
altivec unavailable fault, when that fault happens inside a user
transaction the kernel has no choice but to enable altivec and doom the
transaction.

The result is that transactions using altivec may get aborted more often
than they should.

The difficulty in catching this with a selftest is my deliberate use of
the word may above. Optimisations to avoid FPU/altivec/VSX faults mean
that the kernel will always leave them on for 255 switches. This code
prevents the kernel turning it off if it got to the 256th switch (and
userspace was transactional).

Fixes: dc16b553c949 ("powerpc: Always restore FPU/VEC/VSX if hardware transactional memory in use")
Reviewed-by: Cyril Bur &lt;cyrilbur@gmail.com&gt;
Signed-off-by: Valentin Rothberg &lt;valentinrothberg@gmail.com&gt;
Signed-off-by: Michael Ellerman &lt;mpe@ellerman.id.au&gt;
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