1 /* 2 * Copyright (c) 2010 Broadcom Corporation 3 * 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. 7 * 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. 15 */ 16 17 #ifndef _wlc_scb_h_ 18 #define _wlc_scb_h_ 19 20 extern bool wlc_aggregatable(struct wlc_info *wlc, u8 tid); 21 22 #define AMPDU_TX_BA_MAX_WSIZE 64 /* max Tx ba window size (in pdu) */ 23 /* structure to store per-tid state for the ampdu initiator */ 24 typedef struct scb_ampdu_tid_ini { 25 u32 magic; 26 u8 tx_in_transit; /* number of pending mpdus in transit in driver */ 27 u8 tid; /* initiator tid for easy lookup */ 28 u8 txretry[AMPDU_TX_BA_MAX_WSIZE]; /* tx retry count; indexed by seq modulo */ 29 struct scb *scb; /* backptr for easy lookup */ 30 } scb_ampdu_tid_ini_t; 31 32 #define AMPDU_MAX_SCB_TID NUMPRIO 33 34 typedef struct scb_ampdu { 35 struct scb *scb; /* back pointer for easy reference */ 36 u8 mpdu_density; /* mpdu density */ 37 u8 max_pdu; /* max pdus allowed in ampdu */ 38 u8 release; /* # of mpdus released at a time */ 39 u16 min_len; /* min mpdu len to support the density */ 40 u32 max_rxlen; /* max ampdu rcv length; 8k, 16k, 32k, 64k */ 41 struct pktq txq; /* sdu transmit queue pending aggregation */ 42 43 /* This could easily be a ini[] pointer and we keep this info in wl itself instead 44 * of having mac80211 hold it for us. Also could be made dynamic per tid instead of 45 * static. 46 */ 47 scb_ampdu_tid_ini_t ini[AMPDU_MAX_SCB_TID]; /* initiator info - per tid (NUMPRIO) */ 48 } scb_ampdu_t; 49 50 #define SCB_MAGIC 0xbeefcafe 51 #define INI_MAGIC 0xabcd1234 52 53 /* station control block - one per remote MAC address */ 54 struct scb { 55 u32 magic; 56 u32 flags; /* various bit flags as defined below */ 57 u32 flags2; /* various bit flags2 as defined below */ 58 u8 state; /* current state bitfield of auth/assoc process */ 59 u8 ea[ETH_ALEN]; /* station address */ 60 void *fragbuf[NUMPRIO]; /* defragmentation buffer per prio */ 61 uint fragresid[NUMPRIO]; /* #bytes unused in frag buffer per prio */ 62 63 u16 seqctl[NUMPRIO]; /* seqctl of last received frame (for dups) */ 64 u16 seqctl_nonqos; /* seqctl of last received frame (for dups) for 65 * non-QoS data and management 66 */ 67 u16 seqnum[NUMPRIO]; /* WME: driver maintained sw seqnum per priority */ 68 69 scb_ampdu_t scb_ampdu; /* AMPDU state including per tid info */ 70 }; 71 72 /* scb flags */ 73 #define SCB_WMECAP 0x0040 /* may ONLY be set if WME_ENAB(wlc) */ 74 #define SCB_HTCAP 0x10000 /* HT (MIMO) capable device */ 75 #define SCB_IS40 0x80000 /* 40MHz capable */ 76 #define SCB_STBCCAP 0x40000000 /* STBC Capable */ 77 #define SCB_WME(a) ((a)->flags & SCB_WMECAP)/* implies WME_ENAB */ 78 #define SCB_SEQNUM(scb, prio) ((scb)->seqnum[(prio)]) 79 #define SCB_PS(a) NULL 80 #define SCB_STBC_CAP(a) ((a)->flags & SCB_STBCCAP) 81 #define SCB_AMPDU(a) true 82 #endif /* _wlc_scb_h_ */ 83