/*********************************************************************
 *                
 * Filename:      irmod.h
 * Version:       0.3
 * Description:   IrDA module and utilities functions
 * Status:        Experimental.
 * Author:        Dag Brattli <dagb@cs.uit.no>
 * Created at:    Mon Dec 15 13:58:52 1997
 * Modified at:   Fri Jan 28 13:15:24 2000
 * Modified by:   Dag Brattli <dagb@cs.uit.no>
 *
 *     Copyright (c) 1998-2000 Dag Brattli, All Rights Reserved.
 *     Copyright (c) 2000-2002 Jean Tourrilhes <jt@hpl.hp.com>
 *      
 *     This program is free software; you can redistribute it and/or 
 *     modify it under the terms of the GNU General Public License as 
 *     published by the Free Software Foundation; either version 2 of 
 *     the License, or (at your option) any later version.
 *  
 *     Neither Dag Brattli nor University of Tromsø admit liability nor
 *     provide warranty for any of this software. This material is 
 *     provided "AS-IS" and at no charg.
 *     
 ********************************************************************/

#ifndef IRMOD_H
#define IRMOD_H

/* Misc status information */
typedef enum {
	STATUS_OK,
	STATUS_ABORTED,
	STATUS_NO_ACTIVITY,
	STATUS_NOISY,
	STATUS_REMOTE,
} LINK_STATUS;

typedef enum {
	LOCK_NO_CHANGE,
	LOCK_LOCKED,
	LOCK_UNLOCKED,
} LOCK_STATUS;

typedef enum { FLOW_STOP, FLOW_START } LOCAL_FLOW;

/*  
 *  IrLMP disconnect reasons. The order is very important, since they 
 *  correspond to disconnect reasons sent in IrLMP disconnect frames, so
 *  please do not touch :-)
 */
typedef enum {
	LM_USER_REQUEST = 1,  /* User request */
	LM_LAP_DISCONNECT,    /* Unexpected IrLAP disconnect */
	LM_CONNECT_FAILURE,   /* Failed to establish IrLAP connection */
	LM_LAP_RESET,         /* IrLAP reset */
	LM_INIT_DISCONNECT,   /* Link Management initiated disconnect */
	LM_LSAP_NOTCONN,      /* Data delivered on unconnected LSAP */
	LM_NON_RESP_CLIENT,   /* Non responsive LM-MUX client */
	LM_NO_AVAIL_CLIENT,   /* No available LM-MUX client */
	LM_CONN_HALF_OPEN,    /* Connection is half open */
	LM_BAD_SOURCE_ADDR,   /* Illegal source address (i.e 0x00) */
} LM_REASON;
#define LM_UNKNOWN 0xff       /* Unspecified disconnect reason */

/* A few forward declarations (to make compiler happy) */
struct qos_info;		/* in <net/irda/qos.h> */

/*
 *  Notify structure used between transport and link management layers
 */
typedef struct {
	int (*data_indication)(void *priv, void *sap, struct sk_buff *skb);
	int (*udata_indication)(void *priv, void *sap, struct sk_buff *skb);
	void (*connect_confirm)(void *instance, void *sap, 
				struct qos_info *qos, __u32 max_sdu_size,
				__u8 max_header_size, struct sk_buff *skb);
	void (*connect_indication)(void *instance, void *sap, 
				   struct qos_info *qos, __u32 max_sdu_size, 
				   __u8 max_header_size, struct sk_buff *skb);
	void (*disconnect_indication)(void *instance, void *sap, 
				      LM_REASON reason, struct sk_buff *);
	void (*flow_indication)(void *instance, void *sap, LOCAL_FLOW flow);
	void (*status_indication)(void *instance,
				  LINK_STATUS link, LOCK_STATUS lock);
	void *instance; /* Layer instance pointer */
	char name[16];  /* Name of layer */
} notify_t;

#define NOTIFY_MAX_NAME 16

/* Zero the notify structure */
void irda_notify_init(notify_t *notify);

/* Locking wrapper - Note the inverted logic on irda_lock().
 * Those function basically return false if the lock is already in the
 * position you want to set it. - Jean II */
#define irda_lock(lock)		(! test_and_set_bit(0, (void *) (lock)))
#define irda_unlock(lock)	(test_and_clear_bit(0, (void *) (lock)))

#endif /* IRMOD_H */









on 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/include/net/dcbevent.h?id=433e19cf33d34bb6751c874a9c00980552fe508c'>433e19cf33d34bb6751c874a9c00980552fe508c</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/net/dcbevent.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/?id=433e19cf33d34bb6751c874a9c00980552fe508c'>ce6547ef2987fbb289fa28f03536328a42781651</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/net/dcbevent.h?id=433e19cf33d34bb6751c874a9c00980552fe508c'>include/net/dcbevent.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/dcbevent.h?id=191e885a2e130e639bb0c8ee350d7047294f2ce6'>191e885a2e130e639bb0c8ee350d7047294f2ce6</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/net/dcbevent.h?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/?id=433e19cf33d34bb6751c874a9c00980552fe508c'>Diffstat</a> (limited to 'include/net/dcbevent.h')</div><table summary='diffstat' class='diffstat'>