2 * Copyright (c) 2010 Broadcom Corporation
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 #define AMPDU_TX_BA_MAX_WSIZE 64 /* max Tx ba window size (in pdu) */
21 /* structure to store per-tid state for the ampdu initiator */
22 typedef struct scb_ampdu_tid_ini {
24 u8 tx_in_transit; /* number of pending mpdus in transit in driver */
25 u8 tid; /* initiator tid for easy lookup */
26 u8 txretry[AMPDU_TX_BA_MAX_WSIZE]; /* tx retry count; indexed by seq modulo */
27 struct scb *scb; /* backptr for easy lookup */
28 } scb_ampdu_tid_ini_t;
30 #define AMPDU_MAX_SCB_TID NUMPRIO
32 typedef struct scb_ampdu {
33 struct scb *scb; /* back pointer for easy reference */
34 u8 mpdu_density; /* mpdu density */
35 u8 max_pdu; /* max pdus allowed in ampdu */
36 u8 release; /* # of mpdus released at a time */
37 u16 min_len; /* min mpdu len to support the density */
38 u32 max_rxlen; /* max ampdu rcv length; 8k, 16k, 32k, 64k */
39 struct pktq txq; /* sdu transmit queue pending aggregation */
41 /* This could easily be a ini[] pointer and we keep this info in wl itself instead
42 * of having mac80211 hold it for us. Also could be made dynamic per tid instead of
45 scb_ampdu_tid_ini_t ini[AMPDU_MAX_SCB_TID]; /* initiator info - per tid (NUMPRIO) */
48 #define SCB_MAGIC 0xbeefcafe
49 #define INI_MAGIC 0xabcd1234
51 /* station control block - one per remote MAC address */
54 u32 flags; /* various bit flags as defined below */
55 u32 flags2; /* various bit flags2 as defined below */
56 u8 state; /* current state bitfield of auth/assoc process */
57 u8 ea[ETH_ALEN]; /* station address */
58 void *fragbuf[NUMPRIO]; /* defragmentation buffer per prio */
59 uint fragresid[NUMPRIO]; /* #bytes unused in frag buffer per prio */
61 u16 seqctl[NUMPRIO]; /* seqctl of last received frame (for dups) */
62 u16 seqctl_nonqos; /* seqctl of last received frame (for dups) for
63 * non-QoS data and management
65 u16 seqnum[NUMPRIO]; /* WME: driver maintained sw seqnum per priority */
67 scb_ampdu_t scb_ampdu; /* AMPDU state including per tid info */
71 #define SCB_WMECAP 0x0040 /* may ONLY be set if WME_ENAB(wlc) */
72 #define SCB_HTCAP 0x10000 /* HT (MIMO) capable device */
73 #define SCB_IS40 0x80000 /* 40MHz capable */
74 #define SCB_STBCCAP 0x40000000 /* STBC Capable */
75 #define SCB_WME(a) ((a)->flags & SCB_WMECAP)/* implies WME_ENAB */
76 #define SCB_SEQNUM(scb, prio) ((scb)->seqnum[(prio)])
77 #define SCB_PS(a) NULL
78 #define SCB_STBC_CAP(a) ((a)->flags & SCB_STBCCAP)
79 #define SCB_AMPDU(a) true
80 #endif /* _wlc_scb_h_ */