/*
 * Michael MIC implementation - optimized for TKIP MIC operations
 * Copyright 2002-2003, Instant802 Networks, 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/types.h>
#include <linux/bitops.h>
#include <linux/ieee80211.h>
#include <asm/unaligned.h>

#include "michael.h"

static void michael_block(struct michael_mic_ctx *mctx, u32 val)
{
	mctx->l ^= val;
	mctx->r ^= rol32(mctx->l, 17);
	mctx->l += mctx->r;
	mctx->r ^= ((mctx->l & 0xff00ff00) >> 8) |
		   ((mctx->l & 0x00ff00ff) << 8);
	mctx->l += mctx->r;
	mctx->r ^= rol32(mctx->l, 3);
	mctx->l += mctx->r;
	mctx->r ^= ror32(mctx->l, 2);
	mctx->l += mctx->r;
}

static void michael_mic_hdr(struct michael_mic_ctx *mctx, const u8 *key,
			    struct ieee80211_hdr *hdr)
{
	u8 *da, *sa, tid;

	da = ieee80211_get_DA(hdr);
	sa = ieee80211_get_SA(hdr);
	if (ieee80211_is_data_qos(hdr->frame_control))
		tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
	else
		tid = 0;

	mctx->l = get_unaligned_le32(key);
	mctx->r = get_unaligned_le32(key + 4);

	/*
	 * A pseudo header (DA, SA, Priority, 0, 0, 0) is used in Michael MIC
	 * calculation, but it is _not_ transmitted
	 */
	michael_block(mctx, get_unaligned_le32(da));
	michael_block(mctx, get_unaligned_le16(&da[4]) |
			    (get_unaligned_le16(sa) << 16));
	michael_block(mctx, get_unaligned_le32(&sa[2]));
	michael_block(mctx, tid);
}

void michael_mic(const u8 *key, struct ieee80211_hdr *hdr,
		 const u8 *data, size_t data_len, u8 *mic)
{
	u32 val;
	size_t block, blocks, left;
	struct michael_mic_ctx mctx;

	michael_mic_hdr(&mctx, key, hdr);

	/* Real data */
	blocks = data_len / 4;
	left = data_len % 4;

	for (block = 0; block < blocks; block++)
		michael_block(&mctx, get_unaligned_le32(&data[block * 4]));

	/* Partial block of 0..3 bytes and padding: 0x5a + 4..7 zeros to make
	 * total length a multiple of 4. */
	val = 0x5a;
	while (left > 0) {
		val <<= 8;
		left--;
		val |= data[blocks * 4 + left];
	}

	michael_block(&mctx, val);
	michael_block(&mctx, 0);

	put_unaligned_le32(mctx.l, mic);
	put_unaligned_le32(mctx.r, mic + 4);
}
i/linux/net-next.git/log/drivers/usb/gadget/function/u_hid.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/diff/?id=c9194b99ae1825bdbafc701965442a47739ff0ad'>root</a>/<a href='/cgit.cgi/linux/net-next.git/diff/drivers?id=c9194b99ae1825bdbafc701965442a47739ff0ad'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb?id=c9194b99ae1825bdbafc701965442a47739ff0ad'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/gadget?id=c9194b99ae1825bdbafc701965442a47739ff0ad'>gadget</a>/<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/gadget/function?id=c9194b99ae1825bdbafc701965442a47739ff0ad'>function</a>/<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/gadget/function/u_hid.h?id=c9194b99ae1825bdbafc701965442a47739ff0ad'>u_hid.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='c9194b99ae1825bdbafc701965442a47739ff0ad'/><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><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=c9194b99ae1825bdbafc701965442a47739ff0ad'>Diffstat</a> (limited to 'drivers/usb/gadget/function/u_hid.h')</div><table summary='diffstat' class='diffstat'>><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>Olof Johansson &lt;olof@lixom.net&gt;</td><td class='right'>2017-01-29 21:00:48 -0800</td></tr>
<tr><th>committer</th><td>Olof Johansson &lt;olof@lixom.net&gt;</td><td class='right'>2017-01-29 21:00:48 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/util/dwarf-aux.c?h=nds-private-remove&amp;id=0a019a28e0ca0af7dc2691d1a9527960b07ad2bb'>0a019a28e0ca0af7dc2691d1a9527960b07ad2bb</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/perf/util/dwarf-aux.c?id=0a019a28e0ca0af7dc2691d1a9527960b07ad2bb'>patch</a>)</td></tr>
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<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/util/dwarf-aux.c?h=nds-private-remove&amp;id=ec026b5020688a8bde5fae9a69ae3c59b66ba3ae'>ec026b5020688a8bde5fae9a69ae3c59b66ba3ae</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/perf/util/dwarf-aux.c?h=nds-private-remove&amp;id=0a019a28e0ca0af7dc2691d1a9527960b07ad2bb&amp;id2=ec026b5020688a8bde5fae9a69ae3c59b66ba3ae'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/util/dwarf-aux.c?h=nds-private-remove&amp;id=8413299cb3933dade6186bbee8363f190032107e'>8413299cb3933dade6186bbee8363f190032107e</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/perf/util/dwarf-aux.c?h=nds-private-remove&amp;id=0a019a28e0ca0af7dc2691d1a9527960b07ad2bb&amp;id2=8413299cb3933dade6186bbee8363f190032107e'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'sti-dt-for-v4.10-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/pchotard/sti into fixes</div><div class='commit-msg'>STi DT fix:

Since v4.10-rc1, xhci is complaining in loop with :
    [  801.953836] usb usb6-port1: Cannot enable. Maybe the USB cable is bad?
    [  801.960455] xhci-hcd xhci-hcd.0.auto: Cannot set link state.
    [  801.966611] usb usb6-port1: cannot disable (err = -32)

set property "snps,dis_u3_susphy_quirk" in DT fix it.

* tag 'sti-dt-for-v4.10-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/pchotard/sti:
  ARM: dts: STiH407-family: set snps,dis_u3_susphy_quirk

Signed-off-by: Olof Johansson &lt;olof@lixom.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=0a019a28e0ca0af7dc2691d1a9527960b07ad2bb'>Diffstat</a> (limited to 'tools/perf/util/dwarf-aux.c')</div><table summary='diffstat' class='diffstat'>