drivers/staging/brcm80211/sys/wlc_scb.h - kernel/msm-4.9 - Gitiles

 /*
  * Copyright (c) 2010 Broadcom Corporation
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */

 #ifndef _wlc_scb_h_
 #define _wlc_scb_h_

 #include <proto/802.1d.h>

 extern bool wlc_aggregatable(wlc_info_t *wlc, uint8 tid);

 #define AMPDU_TX_BA_MAX_WSIZE	64	/* max Tx ba window size (in pdu) */
 /* structure to store per-tid state for the ampdu initiator */
 typedef struct scb_ampdu_tid_ini {
 	uint32 magic;
 	uint8 tx_in_transit;	/* number of pending mpdus in transit in driver */
 	uint8 tid;		/* initiator tid for easy lookup */
 	uint8 txretry[AMPDU_TX_BA_MAX_WSIZE];	/* tx retry count; indexed by seq modulo */
 	struct scb *scb;	/* backptr for easy lookup */
 } scb_ampdu_tid_ini_t;

 #define AMPDU_MAX_SCB_TID	NUMPRIO

 typedef struct scb_ampdu {
 	struct scb *scb;	/* back pointer for easy reference */
 	uint8 mpdu_density;	/* mpdu density */
 	uint8 max_pdu;		/* max pdus allowed in ampdu */
 	uint8 release;		/* # of mpdus released at a time */
 	uint16 min_len;		/* min mpdu len to support the density */
 	uint32 max_rxlen;	/* max ampdu rcv length; 8k, 16k, 32k, 64k */
 	struct pktq txq;	/* sdu transmit queue pending aggregation */

 	/* This could easily be a ini[] pointer and we keep this info in wl itself instead
 	 * of having mac80211 hold it for us.  Also could be made dynamic per tid instead of
 	 * static.
 	 */
 	scb_ampdu_tid_ini_t ini[AMPDU_MAX_SCB_TID];	/* initiator info - per tid (NUMPRIO) */
 } scb_ampdu_t;

 #define SCB_MAGIC 	0xbeefcafe
 #define INI_MAGIC 	0xabcd1234

 /* station control block - one per remote MAC address */
 struct scb {
 	uint32 magic;
 	uint32 flags;		/* various bit flags as defined below */
 	uint32 flags2;		/* various bit flags2 as defined below */
 	uint8 state;		/* current state bitfield of auth/assoc process */
 	struct ether_addr ea;	/* station address */
 	void *fragbuf[NUMPRIO];	/* defragmentation buffer per prio */
 	uint fragresid[NUMPRIO];	/* #bytes unused in frag buffer per prio */

 	uint16 seqctl[NUMPRIO];	/* seqctl of last received frame (for dups) */
 	uint16 seqctl_nonqos;	/* seqctl of last received frame (for dups) for
 				 * non-QoS data and management
 				 */
 	uint16 seqnum[NUMPRIO];	/* WME: driver maintained sw seqnum per priority */

 	scb_ampdu_t scb_ampdu;	/* AMPDU state including per tid info */
 };

 /* SCB flags */
 #define SCB_NONERP		0x0001	/* No ERP */
 #define SCB_LONGSLOT		0x0002	/* Long Slot */
 #define SCB_SHORTPREAMBLE	0x0004	/* Short Preamble ok */
 #define SCB_8021XHDR		0x0008	/* 802.1x Header */
 #define SCB_WPA_SUP		0x0010	/* 0 - authenticator, 1 - supplicant */
 #define SCB_DEAUTH		0x0020	/* 0 - ok to deauth, 1 - no (just did) */
 #define SCB_WMECAP		0x0040	/* WME Cap; may ONLY be set if WME_ENAB(wlc) */
 #define SCB_BRCM		0x0100	/* BRCM AP or STA */
 #define SCB_WDS_LINKUP		0x0200	/* WDS link up */
 #define SCB_RESERVED1		0x0400
 #define SCB_RESERVED2		0x0800
 #define SCB_MYAP		0x1000	/* We are associated to this AP */
 #define SCB_PENDING_PROBE	0x2000	/* Probe is pending to this SCB */
 #define SCB_AMSDUCAP		0x4000	/* A-MSDU capable */
 #define SCB_BACAP		0x8000	/* pre-n blockack capable */
 #define SCB_HTCAP		0x10000	/* HT (MIMO) capable device */
 #define SCB_RECV_PM		0x20000	/* state of PM bit in last data frame recv'd */
 #define SCB_AMPDUCAP		0x40000	/* A-MPDU capable */
 #define SCB_IS40		0x80000	/* 40MHz capable */
 #define SCB_NONGF		0x100000	/* Not Green Field capable */
 #define SCB_APSDCAP		0x200000	/* APSD capable */
 #define SCB_PENDING_FREE	0x400000	/* marked for deletion - clip recursion */
 #define SCB_PENDING_PSPOLL	0x800000	/* PS-Poll is pending to this SCB */
 #define SCB_RIFSCAP		0x1000000	/* RIFS capable */
 #define SCB_HT40INTOLERANT	0x2000000	/* 40 Intolerant */
 #define SCB_WMEPS		0x4000000	/* PS + WME w/o APSD capable */
 #define SCB_SENT_APSD_TRIG	0x8000000	/* APSD Trigger Null Frame was recently sent */
 #define SCB_COEX_MGMT		0x10000000	/* Coexistence Management supported */
 #define SCB_IBSS_PEER		0x20000000	/* Station is an IBSS peer */
 #define SCB_STBCCAP		0x40000000	/* STBC Capable */

 /* scb flags2 */
 #define SCB2_SGI20_CAP		0x00000001	/* 20MHz SGI Capable */
 #define SCB2_SGI40_CAP		0x00000002	/* 40MHz SGI Capable */
 #define SCB2_RX_LARGE_AGG	0x00000004	/* device can rx large aggs */
 #define SCB2_INTERNAL		0x00000008	/* This scb is an internal scb */
 #define SCB2_IN_ASSOC		0x00000010	/* Incoming assocation in progress */
 #define SCB2_RESERVED1		0x00000040
 #define SCB2_LDPCCAP		0x00000080	/* LDPC Cap */

 /* scb association state bitfield */
 #define UNAUTHENTICATED		0	/* unknown */
 #define AUTHENTICATED		1	/* 802.11 authenticated (open or shared key) */
 #define ASSOCIATED		2	/* 802.11 associated */
 #define PENDING_AUTH		4	/* Waiting for 802.11 authentication response */
 #define PENDING_ASSOC		8	/* Waiting for 802.11 association response */
 #define AUTHORIZED		0x10	/* 802.1X authorized */
 #define TAKEN4IBSS		0x80	/* Taken */

 /* scb association state helpers */
 #define SCB_ASSOCIATED(a)	((a)->state & ASSOCIATED)
 #define SCB_AUTHENTICATED(a)	((a)->state & AUTHENTICATED)
 #define SCB_AUTHORIZED(a)	((a)->state & AUTHORIZED)

 /* flag access */
 #define SCB_ISMYAP(a)           ((a)->flags & SCB_MYAP)
 #define SCB_ISPERMANENT(a)      ((a)->permanent)
 #define	SCB_INTERNAL(a) 	((a)->flags2 & SCB2_INTERNAL)
 /* scb association state helpers w/ respect to ssid (in case of multi ssids)
  * The bit set in the bit field is relative to the current state (i.e. if
  * the current state is "associated", a 1 at the position "i" means the
  * sta is associated to ssid "i"
  */
 #define SCB_ASSOCIATED_BSSCFG(a, i)	\
 	(((a)->state & ASSOCIATED) && isset(&(scb->auth_bsscfg), i))

 #define SCB_AUTHENTICATED_BSSCFG(a, i)	\
 	(((a)->state & AUTHENTICATED) && isset(&(scb->auth_bsscfg), i))

 #define SCB_AUTHORIZED_BSSCFG(a, i)	\
 	(((a)->state & AUTHORIZED) && isset(&(scb->auth_bsscfg), i))

 #define SCB_LONG_TIMEOUT	3600	/* # seconds of idle time after which we proactively
 					 * free an authenticated SCB
 					 */
 #define SCB_SHORT_TIMEOUT	  60	/* # seconds of idle time after which we will reclaim an
 					 * authenticated SCB if we would otherwise fail
 					 * an SCB allocation.
 					 */
 #define SCB_TIMEOUT		  60	/* # seconds: interval to probe idle STAs */
 #define SCB_ACTIVITY_TIME	   5	/* # seconds: skip probe if activity during this time */
 #define SCB_GRACE_ATTEMPTS	   3	/* # attempts to probe sta beyond scb_activity_time */

 /* scb_info macros */
 #define SCB_PS(a)		NULL
 #define SCB_WDS(a)		NULL
 #define SCB_INTERFACE(a)        ((a)->bsscfg->wlcif->wlif)
 #define SCB_WLCIFP(a)           (((a)->bsscfg->wlcif))
 #define WLC_BCMC_PSMODE(wlc, bsscfg) (TRUE)

 #define SCB_WME(a)		((a)->flags & SCB_WMECAP)	/* Also implies WME_ENAB(wlc) */

 #define SCB_AMPDU(a)		TRUE
 #define SCB_AMSDU(a)		FALSE

 #define SCB_HT_CAP(a)		((a)->flags & SCB_HTCAP)
 #define SCB_ISGF_CAP(a)		(((a)->flags & (SCB_HTCAP | SCB_NONGF)) == SCB_HTCAP)
 #define SCB_NONGF_CAP(a)	(((a)->flags & (SCB_HTCAP | SCB_NONGF)) == \
 					(SCB_HTCAP | SCB_NONGF))
 #define SCB_COEX_CAP(a)		((a)->flags & SCB_COEX_MGMT)
 #define SCB_STBC_CAP(a)		((a)->flags & SCB_STBCCAP)
 #define SCB_LDPC_CAP(a)		(SCB_HT_CAP(a) && ((a)->flags2 & SCB2_LDPCCAP))

 #define SCB_IS_IBSS_PEER(a)	((a)->flags & SCB_IBSS_PEER)
 #define SCB_SET_IBSS_PEER(a)	((a)->flags |= SCB_IBSS_PEER)
 #define SCB_UNSET_IBSS_PEER(a)	((a)->flags &= ~SCB_IBSS_PEER)

 #define SCB_11E(a)		FALSE

 #define SCB_QOS(a)		((a)->flags & (SCB_WMECAP | SCB_HTCAP))

 #define SCB_BSSCFG(a)           ((a)->bsscfg)

 #define SCB_SEQNUM(scb, prio)	((scb)->seqnum[(prio)])

 #define SCB_ISMULTI(a)	ETHER_ISMULTI((a)->ea.octet)
 #define SCB_ISVALID(a, _pkttag_dbgid)	((a) && (a)->_dbgid == (_pkttag_dbgid))

 /* API for accessing SCB pointer in WLPKTTAG */
 #ifdef BCMDBG
 #define WLPKTTAGSCBSET(p, scb) { WLPKTTAG(p)->_scb = scb; WLPKTTAG(p)->_scb_dbgid = scb->_dbgid; }
 #define WLPKTTAGSCBCLR(p) { WLPKTTAG(p)->_scb = NULL; WLPKTTAG(p)->_scb_dbgid = 0; }
 #else
 #define WLPKTTAGSCBSET(p, scb) (WLPKTTAG(p)->_scb = scb)
 #define WLPKTTAGSCBCLR(p) (WLPKTTAG(p)->_scb = NULL)
 #endif

 #define WLCNTSCBINCR(a)		/* No stats support */
 #define WLCNTSCBDECR(a)		/* No stats support */
 #define WLCNTSCBADD(a, delta)	/* No stats support */
 #define WLCNTSCBSET(a, value)	/* No stats support */
 #define WLCNTSCBVAL(a)		0	/* No stats support */
 #define WLCNTSCB_COND_SET(c, a, v)	/* No stats support */
 #define WLCNTSCB_COND_ADD(c, a, d)	/* No stats support */
 #define WLCNTSCB_COND_INCR(c, a)	/* No stats support */

 #endif				/* _wlc_scb_h_ */
	/*
	* Copyright (c) 2010 Broadcom Corporation
	*
	* Permission to use, copy, modify, and/or distribute this software for any
	* purpose with or without fee is hereby granted, provided that the above
	* copyright notice and this permission notice appear in all copies.
	*
	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
	* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
	* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
	* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	*/

	#ifndef _wlc_scb_h_
	#define _wlc_scb_h_

	#include <proto/802.1d.h>

	extern bool wlc_aggregatable(wlc_info_t *wlc, uint8 tid);

	#define AMPDU_TX_BA_MAX_WSIZE 64 /* max Tx ba window size (in pdu) */
	/* structure to store per-tid state for the ampdu initiator */
	typedef struct scb_ampdu_tid_ini {
	uint32 magic;
	uint8 tx_in_transit; /* number of pending mpdus in transit in driver */
	uint8 tid; /* initiator tid for easy lookup */
	uint8 txretry[AMPDU_TX_BA_MAX_WSIZE]; /* tx retry count; indexed by seq modulo */
	struct scb scb; / backptr for easy lookup */
	} scb_ampdu_tid_ini_t;

	#define AMPDU_MAX_SCB_TID NUMPRIO

	typedef struct scb_ampdu {
	struct scb scb; / back pointer for easy reference */
	uint8 mpdu_density; /* mpdu density */
	uint8 max_pdu; /* max pdus allowed in ampdu */
	uint8 release; /* # of mpdus released at a time */
	uint16 min_len; /* min mpdu len to support the density */
	uint32 max_rxlen; /* max ampdu rcv length; 8k, 16k, 32k, 64k */
	struct pktq txq; /* sdu transmit queue pending aggregation */

	/* This could easily be a ini[] pointer and we keep this info in wl itself instead
	* of having mac80211 hold it for us. Also could be made dynamic per tid instead of
	* static.
	*/
	scb_ampdu_tid_ini_t ini[AMPDU_MAX_SCB_TID]; /* initiator info - per tid (NUMPRIO) */
	} scb_ampdu_t;

	#define SCB_MAGIC 0xbeefcafe
	#define INI_MAGIC 0xabcd1234

	/* station control block - one per remote MAC address */
	struct scb {
	uint32 magic;
	uint32 flags; /* various bit flags as defined below */
	uint32 flags2; /* various bit flags2 as defined below */
	uint8 state; /* current state bitfield of auth/assoc process */
	struct ether_addr ea; /* station address */
	void fragbuf[NUMPRIO]; / defragmentation buffer per prio */
	uint fragresid[NUMPRIO]; /* #bytes unused in frag buffer per prio */

	uint16 seqctl[NUMPRIO]; /* seqctl of last received frame (for dups) */
	uint16 seqctl_nonqos; /* seqctl of last received frame (for dups) for
	* non-QoS data and management
	*/
	uint16 seqnum[NUMPRIO]; /* WME: driver maintained sw seqnum per priority */

	scb_ampdu_t scb_ampdu; /* AMPDU state including per tid info */
	};

	/* SCB flags */
	#define SCB_NONERP 0x0001 /* No ERP */
	#define SCB_LONGSLOT 0x0002 /* Long Slot */
	#define SCB_SHORTPREAMBLE 0x0004 /* Short Preamble ok */
	#define SCB_8021XHDR 0x0008 /* 802.1x Header */
	#define SCB_WPA_SUP 0x0010 /* 0 - authenticator, 1 - supplicant */
	#define SCB_DEAUTH 0x0020 /* 0 - ok to deauth, 1 - no (just did) */
	#define SCB_WMECAP 0x0040 /* WME Cap; may ONLY be set if WME_ENAB(wlc) */
	#define SCB_BRCM 0x0100 /* BRCM AP or STA */
	#define SCB_WDS_LINKUP 0x0200 /* WDS link up */
	#define SCB_RESERVED1 0x0400
	#define SCB_RESERVED2 0x0800
	#define SCB_MYAP 0x1000 /* We are associated to this AP */
	#define SCB_PENDING_PROBE 0x2000 /* Probe is pending to this SCB */
	#define SCB_AMSDUCAP 0x4000 /* A-MSDU capable */
	#define SCB_BACAP 0x8000 /* pre-n blockack capable */
	#define SCB_HTCAP 0x10000 /* HT (MIMO) capable device */
	#define SCB_RECV_PM 0x20000 /* state of PM bit in last data frame recv'd */
	#define SCB_AMPDUCAP 0x40000 /* A-MPDU capable */
	#define SCB_IS40 0x80000 /* 40MHz capable */
	#define SCB_NONGF 0x100000 /* Not Green Field capable */
	#define SCB_APSDCAP 0x200000 /* APSD capable */
	#define SCB_PENDING_FREE 0x400000 /* marked for deletion - clip recursion */
	#define SCB_PENDING_PSPOLL 0x800000 /* PS-Poll is pending to this SCB */
	#define SCB_RIFSCAP 0x1000000 /* RIFS capable */
	#define SCB_HT40INTOLERANT 0x2000000 /* 40 Intolerant */
	#define SCB_WMEPS 0x4000000 /* PS + WME w/o APSD capable */
	#define SCB_SENT_APSD_TRIG 0x8000000 /* APSD Trigger Null Frame was recently sent */
	#define SCB_COEX_MGMT 0x10000000 /* Coexistence Management supported */
	#define SCB_IBSS_PEER 0x20000000 /* Station is an IBSS peer */
	#define SCB_STBCCAP 0x40000000 /* STBC Capable */

	/* scb flags2 */
	#define SCB2_SGI20_CAP 0x00000001 /* 20MHz SGI Capable */
	#define SCB2_SGI40_CAP 0x00000002 /* 40MHz SGI Capable */
	#define SCB2_RX_LARGE_AGG 0x00000004 /* device can rx large aggs */
	#define SCB2_INTERNAL 0x00000008 /* This scb is an internal scb */
	#define SCB2_IN_ASSOC 0x00000010 /* Incoming assocation in progress */
	#define SCB2_RESERVED1 0x00000040
	#define SCB2_LDPCCAP 0x00000080 /* LDPC Cap */

	/* scb association state bitfield */
	#define UNAUTHENTICATED 0 /* unknown */
	#define AUTHENTICATED 1 /* 802.11 authenticated (open or shared key) */
	#define ASSOCIATED 2 /* 802.11 associated */
	#define PENDING_AUTH 4 /* Waiting for 802.11 authentication response */
	#define PENDING_ASSOC 8 /* Waiting for 802.11 association response */
	#define AUTHORIZED 0x10 /* 802.1X authorized */
	#define TAKEN4IBSS 0x80 /* Taken */

	/* scb association state helpers */
	#define SCB_ASSOCIATED(a) ((a)->state & ASSOCIATED)
	#define SCB_AUTHENTICATED(a) ((a)->state & AUTHENTICATED)
	#define SCB_AUTHORIZED(a) ((a)->state & AUTHORIZED)

	/* flag access */
	#define SCB_ISMYAP(a) ((a)->flags & SCB_MYAP)
	#define SCB_ISPERMANENT(a) ((a)->permanent)
	#define SCB_INTERNAL(a) ((a)->flags2 & SCB2_INTERNAL)
	/* scb association state helpers w/ respect to ssid (in case of multi ssids)
	* The bit set in the bit field is relative to the current state (i.e. if
	* the current state is "associated", a 1 at the position "i" means the
	* sta is associated to ssid "i"
	*/
	#define SCB_ASSOCIATED_BSSCFG(a, i) \
	(((a)->state & ASSOCIATED) && isset(&(scb->auth_bsscfg), i))

	#define SCB_AUTHENTICATED_BSSCFG(a, i) \
	(((a)->state & AUTHENTICATED) && isset(&(scb->auth_bsscfg), i))

	#define SCB_AUTHORIZED_BSSCFG(a, i) \
	(((a)->state & AUTHORIZED) && isset(&(scb->auth_bsscfg), i))

	#define SCB_LONG_TIMEOUT 3600 /* # seconds of idle time after which we proactively
	* free an authenticated SCB
	*/
	#define SCB_SHORT_TIMEOUT 60 /* # seconds of idle time after which we will reclaim an
	* authenticated SCB if we would otherwise fail
	* an SCB allocation.
	*/
	#define SCB_TIMEOUT 60 /* # seconds: interval to probe idle STAs */
	#define SCB_ACTIVITY_TIME 5 /* # seconds: skip probe if activity during this time */
	#define SCB_GRACE_ATTEMPTS 3 /* # attempts to probe sta beyond scb_activity_time */

	/* scb_info macros */
	#define SCB_PS(a) NULL
	#define SCB_WDS(a) NULL
	#define SCB_INTERFACE(a) ((a)->bsscfg->wlcif->wlif)
	#define SCB_WLCIFP(a) (((a)->bsscfg->wlcif))
	#define WLC_BCMC_PSMODE(wlc, bsscfg) (TRUE)

	#define SCB_WME(a) ((a)->flags & SCB_WMECAP) /* Also implies WME_ENAB(wlc) */

	#define SCB_AMPDU(a) TRUE
	#define SCB_AMSDU(a) FALSE

	#define SCB_HT_CAP(a) ((a)->flags & SCB_HTCAP)
	#define SCB_ISGF_CAP(a) (((a)->flags & (SCB_HTCAP \| SCB_NONGF)) == SCB_HTCAP)
	#define SCB_NONGF_CAP(a) (((a)->flags & (SCB_HTCAP \| SCB_NONGF)) == \
	(SCB_HTCAP \| SCB_NONGF))
	#define SCB_COEX_CAP(a) ((a)->flags & SCB_COEX_MGMT)
	#define SCB_STBC_CAP(a) ((a)->flags & SCB_STBCCAP)
	#define SCB_LDPC_CAP(a) (SCB_HT_CAP(a) && ((a)->flags2 & SCB2_LDPCCAP))

	#define SCB_IS_IBSS_PEER(a) ((a)->flags & SCB_IBSS_PEER)
	#define SCB_SET_IBSS_PEER(a) ((a)->flags \|= SCB_IBSS_PEER)
	#define SCB_UNSET_IBSS_PEER(a) ((a)->flags &= ~SCB_IBSS_PEER)

	#define SCB_11E(a) FALSE

	#define SCB_QOS(a) ((a)->flags & (SCB_WMECAP \| SCB_HTCAP))

	#define SCB_BSSCFG(a) ((a)->bsscfg)

	#define SCB_SEQNUM(scb, prio) ((scb)->seqnum[(prio)])

	#define SCB_ISMULTI(a) ETHER_ISMULTI((a)->ea.octet)
	#define SCB_ISVALID(a, _pkttag_dbgid) ((a) && (a)->_dbgid == (_pkttag_dbgid))

	/* API for accessing SCB pointer in WLPKTTAG */
	#ifdef BCMDBG
	#define WLPKTTAGSCBSET(p, scb) { WLPKTTAG(p)->_scb = scb; WLPKTTAG(p)->_scb_dbgid = scb->_dbgid; }
	#define WLPKTTAGSCBCLR(p) { WLPKTTAG(p)->_scb = NULL; WLPKTTAG(p)->_scb_dbgid = 0; }
	#else
	#define WLPKTTAGSCBSET(p, scb) (WLPKTTAG(p)->_scb = scb)
	#define WLPKTTAGSCBCLR(p) (WLPKTTAG(p)->_scb = NULL)
	#endif

	#define WLCNTSCBINCR(a) /* No stats support */
	#define WLCNTSCBDECR(a) /* No stats support */
	#define WLCNTSCBADD(a, delta) /* No stats support */
	#define WLCNTSCBSET(a, value) /* No stats support */
	#define WLCNTSCBVAL(a) 0 /* No stats support */
	#define WLCNTSCB_COND_SET(c, a, v) /* No stats support */
	#define WLCNTSCB_COND_ADD(c, a, d) /* No stats support */
	#define WLCNTSCB_COND_INCR(c, a) /* No stats support */

	#endif /* _wlc_scb_h_ */