/*
 * Copyright (C) 2014 Fraunhofer ITWM
 *
 * 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.
 *
 * This program 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.
 *
 * Written by:
 * Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
 */

#ifndef MAC802154_LLSEC_H
#define MAC802154_LLSEC_H

#include <linux/slab.h>
#include <linux/hashtable.h>
#include <linux/kref.h>
#include <linux/spinlock.h>
#include <net/af_ieee802154.h>
#include <net/ieee802154_netdev.h>

struct mac802154_llsec_key {
	struct ieee802154_llsec_key key;

	/* one tfm for each authsize (4/8/16) */
	struct crypto_aead *tfm[3];
	struct crypto_skcipher *tfm0;

	struct kref ref;
};

struct mac802154_llsec_device_key {
	struct ieee802154_llsec_device_key devkey;

	struct rcu_head rcu;
};

struct mac802154_llsec_device {
	struct ieee802154_llsec_device dev;

	struct hlist_node bucket_s;
	struct hlist_node bucket_hw;

	/* protects dev.frame_counter and the elements of dev.keys */
	spinlock_t lock;

	struct rcu_head rcu;
};

struct mac802154_llsec_seclevel {
	struct ieee802154_llsec_seclevel level;

	struct rcu_head rcu;
};

struct mac802154_llsec {
	struct ieee802154_llsec_params params;
	struct ieee802154_llsec_table table;

	DECLARE_HASHTABLE(devices_short, 6);
	DECLARE_HASHTABLE(devices_hw, 6);

	/* protects params, all other fields are fine with RCU */
	rwlock_t lock;
};

void mac802154_llsec_init(struct mac802154_llsec *sec);
void mac802154_llsec_destroy(struct mac802154_llsec *sec);

int mac802154_llsec_get_params(struct mac802154_llsec *sec,
			       struct ieee802154_llsec_params *params);
int mac802154_llsec_set_params(struct mac802154_llsec *sec,
			       const struct ieee802154_llsec_params *params,
			       int changed);

int mac802154_llsec_key_add(struct mac802154_llsec *sec,
			    const struct ieee802154_llsec_key_id *id,
			    const struct ieee802154_llsec_key *key);
int mac802154_llsec_key_del(struct mac802154_llsec *sec,
			    const struct ieee802154_llsec_key_id *key);

int mac802154_llsec_dev_add(struct mac802154_llsec *sec,
			    const struct ieee802154_llsec_device *dev);
int mac802154_llsec_dev_del(struct mac802154_llsec *sec,
			    __le64 device_addr);

int mac802154_llsec_devkey_add(struct mac802154_llsec *sec,
			       __le64 dev_addr,
			       const struct ieee802154_llsec_device_key *key);
int mac802154_llsec_devkey_del(struct mac802154_llsec *sec,
			       __le64 dev_addr,
			       const struct ieee802154_llsec_device_key *key);

int mac802154_llsec_seclevel_add(struct mac802154_llsec *sec,
				 const struct ieee802154_llsec_seclevel *sl);
int mac802154_llsec_seclevel_del(struct mac802154_llsec *sec,
				 const struct ieee802154_llsec_seclevel *sl);

int mac802154_llsec_encrypt(struct mac802154_llsec *sec, struct sk_buff *skb);
int mac802154_llsec_decrypt(struct mac802154_llsec *sec, struct sk_buff *skb);

#endif /* MAC802154_LLSEC_H */
='/cgit.cgi/linux/net-next.git/commit/sound/soc?h=nds-private-remove&amp;id=433e19cf33d34bb6751c874a9c00980552fe508c'>soc</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/codecs?h=nds-private-remove&amp;id=433e19cf33d34bb6751c874a9c00980552fe508c'>codecs</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/codecs/wm8988.h?h=nds-private-remove&amp;id=433e19cf33d34bb6751c874a9c00980552fe508c'>wm8988.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='433e19cf33d34bb6751c874a9c00980552fe508c'/><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>Dexuan Cui &lt;decui@microsoft.com&gt;</td><td class='right'>2017-01-28 11:46:02 -0700</td></tr>
<tr><th>committer</th><td>Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;</td><td class='right'>2017-01-31 10:59:48 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/codecs/wm8988.h?h=nds-private-remove&amp;id=433e19cf33d34bb6751c874a9c00980552fe508c'>433e19cf33d34bb6751c874a9c00980552fe508c</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/soc/codecs/wm8988.h?id=433e19cf33d34bb6751c874a9c00980552fe508c'>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=433e19cf33d34bb6751c874a9c00980552fe508c'>ce6547ef2987fbb289fa28f03536328a42781651</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/soc/codecs/wm8988.h?h=nds-private-remove&amp;id=433e19cf33d34bb6751c874a9c00980552fe508c'>sound/soc/codecs/wm8988.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/codecs/wm8988.h?h=nds-private-remove&amp;id=191e885a2e130e639bb0c8ee350d7047294f2ce6'>191e885a2e130e639bb0c8ee350d7047294f2ce6</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/codecs/wm8988.h?h=nds-private-remove&amp;id=433e19cf33d34bb6751c874a9c00980552fe508c&amp;id2=191e885a2e130e639bb0c8ee350d7047294f2ce6'>diff</a>)</td></tr></table>
<div class='commit-subject'>Drivers: hv: vmbus: finally fix hv_need_to_signal_on_read()</div><div class='commit-msg'>Commit a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in
hv_need_to_signal_on_read()")
added the proper mb(), but removed the test "prev_write_sz &lt; pending_sz"
when making the signal decision.

As a result, the guest can signal the host unnecessarily,
and then the host can throttle the guest because the host
thinks the guest is buggy or malicious; finally the user
running stress test can perceive intermittent freeze of
the guest.

This patch brings back the test, and properly handles the
in-place consumption APIs used by NetVSC (see get_next_pkt_raw(),
put_pkt_raw() and commit_rd_index()).

Fixes: a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in
hv_need_to_signal_on_read()")

Signed-off-by: Dexuan Cui &lt;decui@microsoft.com&gt;
Reported-by: Rolf Neugebauer &lt;rolf.neugebauer@docker.com&gt;
Tested-by: Rolf Neugebauer &lt;rolf.neugebauer@docker.com&gt;
Cc: "K. Y. Srinivasan" &lt;kys@microsoft.com&gt;
Cc: Haiyang Zhang &lt;haiyangz@microsoft.com&gt;
Cc: Stephen Hemminger &lt;sthemmin@microsoft.com&gt;
Cc: &lt;stable@vger.kernel.org&gt;
Signed-off-by: K. Y. Srinivasan &lt;kys@microsoft.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=433e19cf33d34bb6751c874a9c00980552fe508c'>Diffstat</a> (limited to 'sound/soc/codecs/wm8988.h')</div><table summary='diffstat' class='diffstat'>