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/drivers/net/wireless/brcm80211/brcmsmac/scb.h

http://github.com/mirrors/linux
C++ Header | 81 lines | 41 code | 13 blank | 27 comment | 0 complexity | bf77ca86ac4dbd67495921bd316e04e0 MD5 | raw file
 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 */
38struct 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
46struct 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 */
64struct 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_ */