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 _BRCM_SCB_H_ 18 #define _BRCM_SCB_H_ 19 20 #include <linux/if_ether.h> 21 #include <brcmu_utils.h> 22 #include <defs.h> 23 #include "types.h" 24 25 #define AMPDU_TX_BA_MAX_WSIZE 64 /* max Tx ba window size (in pdu) */ 26 27 #define AMPDU_MAX_SCB_TID NUMPRIO 28 29 /* scb flags */ 30 #define SCB_WMECAP 0x0040 31 #define SCB_HTCAP 0x10000 /* HT (MIMO) capable device */ 32 #define SCB_IS40 0x80000 /* 40MHz capable */ 33 #define SCB_STBCCAP 0x40000000 /* STBC Capable */ 34 35 #define SCB_MAGIC 0xbeefcafe 36 37 /* structure to store per-tid state for the ampdu initiator */ 38 struct scb_ampdu_tid_ini { 39 u8 tid; /* initiator tid for easy lookup */ 40 /* tx retry count; indexed by seq modulo */ 41 u8 txretry[AMPDU_TX_BA_MAX_WSIZE]; 42 struct scb *scb; /* backptr for easy lookup */ 43 u8 ba_wsize; /* negotiated ba window size (in pdu) */ 44 }; 45 46 struct scb_ampdu { 47 struct scb *scb; /* back pointer for easy reference */ 48 u8 mpdu_density; /* mpdu density */ 49 u8 max_pdu; /* max pdus allowed in ampdu */ 50 u8 release; /* # of mpdus released at a time */ 51 u16 min_len; /* min mpdu len to support the density */ 52 u32 max_rx_ampdu_bytes; /* max ampdu rcv length; 8k, 16k, 32k, 64k */ 53 54 /* 55 * This could easily be a ini[] pointer and we keep this info in wl 56 * itself instead of having mac80211 hold it for us. Also could be made 57 * dynamic per tid instead of static. 58 */ 59 /* initiator info - per tid (NUMPRIO): */ 60 struct scb_ampdu_tid_ini ini[AMPDU_MAX_SCB_TID]; 61 }; 62 63 /* station control block - one per remote MAC address */ 64 struct scb { 65 u32 magic; 66 u32 flags; /* various bit flags as defined below */ 67 u32 flags2; /* various bit flags2 as defined below */ 68 u8 state; /* current state bitfield of auth/assoc process */ 69 u8 ea[ETH_ALEN]; /* station address */ 70 uint fragresid[NUMPRIO];/* #bytes unused in frag buffer per prio */ 71 72 u16 seqctl[NUMPRIO]; /* seqctl of last received frame (for dups) */ 73 /* seqctl of last received frame (for dups) for non-QoS data and 74 * management */ 75 u16 seqctl_nonqos; 76 u16 seqnum[NUMPRIO];/* WME: driver maintained sw seqnum per priority */ 77 78 struct scb_ampdu scb_ampdu; /* AMPDU state including per tid info */ 79 }; 80 81 #endif /* _BRCM_SCB_H_ */ 82