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/*
* 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_
#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 {
u32 magic;
u8 tx_in_transit; /* number of pending mpdus in transit in driver */
u8 tid; /* initiator tid for easy lookup */
u8 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 */
u8 mpdu_density; /* mpdu density */
u8 max_pdu; /* max pdus allowed in ampdu */
u8 release; /* # of mpdus released at a time */
u16 min_len; /* min mpdu len to support the density */
u32 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 {
u32 magic;
u32 flags; /* various bit flags as defined below */
u32 flags2; /* various bit flags2 as defined below */
u8 state; /* current state bitfield of auth/assoc process */
u8 ea[ETH_ALEN]; /* station address */
void *fragbuf[NUMPRIO]; /* defragmentation buffer per prio */
uint fragresid[NUMPRIO]; /* #bytes unused in frag buffer per prio */
u16 seqctl[NUMPRIO]; /* seqctl of last received frame (for dups) */
u16 seqctl_nonqos; /* seqctl of last received frame (for dups) for
* non-QoS data and management
*/
u16 seqnum[NUMPRIO]; /* WME: driver maintained sw seqnum per priority */
scb_ampdu_t scb_ampdu; /* AMPDU state including per tid info */
};
/* scb flags */
#define SCB_WMECAP 0x0040 /* may ONLY be set if WME_ENAB(wlc) */
#define SCB_HTCAP 0x10000 /* HT (MIMO) capable device */
#define SCB_IS40 0x80000 /* 40MHz capable */
#define SCB_STBCCAP 0x40000000 /* STBC Capable */
#define SCB_WME(a) ((a)->flags & SCB_WMECAP)/* implies WME_ENAB */
#define SCB_SEQNUM(scb, prio) ((scb)->seqnum[(prio)])
#define SCB_PS(a) NULL
#define SCB_STBC_CAP(a) ((a)->flags & SCB_STBCCAP)
#define SCB_AMPDU(a) true
#endif /* _wlc_scb_h_ */
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