/*
 * AES-GMAC for IEEE 802.11 BIP-GMAC-128 and BIP-GMAC-256
 * Copyright 2015, Qualcomm Atheros, 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.
 */

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/err.h>
#include <crypto/aead.h>
#include <crypto/aes.h>

#include <net/mac80211.h>
#include "key.h"
#include "aes_gmac.h"

int ieee80211_aes_gmac(struct crypto_aead *tfm, const u8 *aad, u8 *nonce,
		       const u8 *data, size_t data_len, u8 *mic)
{
	struct scatterlist sg[4];
	u8 *zero, *__aad, iv[AES_BLOCK_SIZE];
	struct aead_request *aead_req;
	int reqsize = sizeof(*aead_req) + crypto_aead_reqsize(tfm);

	if (data_len < GMAC_MIC_LEN)
		return -EINVAL;

	aead_req = kzalloc(reqsize + GMAC_MIC_LEN + GMAC_AAD_LEN, GFP_ATOMIC);
	if (!aead_req)
		return -ENOMEM;

	zero = (u8 *)aead_req + reqsize;
	__aad = zero + GMAC_MIC_LEN;
	memcpy(__aad, aad, GMAC_AAD_LEN);

	sg_init_table(sg, 4);
	sg_set_buf(&sg[0], __aad, GMAC_AAD_LEN);
	sg_set_buf(&sg[1], data, data_len - GMAC_MIC_LEN);
	sg_set_buf(&sg[2], zero, GMAC_MIC_LEN);
	sg_set_buf(&sg[3], mic, GMAC_MIC_LEN);

	memcpy(iv, nonce, GMAC_NONCE_LEN);
	memset(iv + GMAC_NONCE_LEN, 0, sizeof(iv) - GMAC_NONCE_LEN);
	iv[AES_BLOCK_SIZE - 1] = 0x01;

	aead_request_set_tfm(aead_req, tfm);
	aead_request_set_crypt(aead_req, sg, sg, 0, iv);
	aead_request_set_ad(aead_req, GMAC_AAD_LEN + data_len);

	crypto_aead_encrypt(aead_req);
	kzfree(aead_req);

	return 0;
}

struct crypto_aead *ieee80211_aes_gmac_key_setup(const u8 key[],
						 size_t key_len)
{
	struct crypto_aead *tfm;
	int err;

	tfm = crypto_alloc_aead("gcm(aes)", 0, CRYPTO_ALG_ASYNC);
	if (IS_ERR(tfm))
		return tfm;

	err = crypto_aead_setkey(tfm, key, key_len);
	if (!err)
		err = crypto_aead_setauthsize(tfm, GMAC_MIC_LEN);
	if (!err)
		return tfm;

	crypto_free_aead(tfm);
	return ERR_PTR(err);
}

void ieee80211_aes_gmac_key_free(struct crypto_aead *tfm)
{
	crypto_free_aead(tfm);
}
ive' href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/clock/qcom,rpmcc.h?h=nds-private-remove&amp;id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/include/dt-bindings/clock/qcom,rpmcc.h?h=nds-private-remove&amp;id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/include/dt-bindings/clock/qcom,rpmcc.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings?h=nds-private-remove&amp;id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>dt-bindings</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/clock?h=nds-private-remove&amp;id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>clock</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/clock/qcom,rpmcc.h?h=nds-private-remove&amp;id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>qcom,rpmcc.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='aaaec6fc755447a1d056765b11b24d8ff2b81366'/><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>Thomas Gleixner &lt;tglx@linutronix.de&gt;</td><td class='right'>2017-01-31 19:03:21 +0100</td></tr>
<tr><th>committer</th><td>Thomas Gleixner &lt;tglx@linutronix.de&gt;</td><td class='right'>2017-01-31 20:22:18 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/clock/qcom,rpmcc.h?h=nds-private-remove&amp;id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>aaaec6fc755447a1d056765b11b24d8ff2b81366</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/dt-bindings/clock/qcom,rpmcc.h?id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>a7f4167960ee1df86739905b6ccdeb95465bfe5f</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/dt-bindings/clock/qcom,rpmcc.h?h=nds-private-remove&amp;id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>include/dt-bindings/clock/qcom,rpmcc.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/clock/qcom,rpmcc.h?h=nds-private-remove&amp;id=08d85f3ea99f1eeafc4e8507936190e86a16ee8c'>08d85f3ea99f1eeafc4e8507936190e86a16ee8c</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/dt-bindings/clock/qcom,rpmcc.h?h=nds-private-remove&amp;id=aaaec6fc755447a1d056765b11b24d8ff2b81366&amp;id2=08d85f3ea99f1eeafc4e8507936190e86a16ee8c'>diff</a>)</td></tr></table>
<div class='commit-subject'>x86/irq: Make irq activate operations symmetric</div><div class='commit-msg'>The recent commit which prevents double activation of interrupts unearthed
interesting code in x86. The code (ab)uses irq_domain_activate_irq() to
reconfigure an already activated interrupt. That trips over the prevention
code now.

Fix it by deactivating the interrupt before activating the new configuration.

Fixes: 08d85f3ea99f1 "irqdomain: Avoid activating interrupts more than once"
Reported-and-tested-by: Mike Galbraith &lt;efault@gmx.de&gt;
Reported-and-tested-by: Borislav Petkov &lt;bp@alien8.de&gt;
Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Cc: Andrey Ryabinin &lt;aryabinin@virtuozzo.com&gt;
Cc: Marc Zyngier &lt;marc.zyngier@arm.com&gt;
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701311901580.3457@nanos

</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>Diffstat</a> (limited to 'include/dt-bindings/clock/qcom,rpmcc.h')</div><table summary='diffstat' class='diffstat'>