freebsd-skq/sys/dev/wi/if_wivar.h
Andrew Thompson 5efea30f03 Create a taskqueue for each wireless interface which provides a serialised
sleepable context for net80211 driver callbacks. This removes the need for USB
and firmware based drivers to roll their own code to defer the chip programming
for state changes, scan requests, channel changes and mcast/promisc updates.
When a driver callback completes the hardware state is now guaranteed to have
been updated and is in sync with net80211 layer.

This nukes around 1300 lines of code from the wireless device drivers making
them more readable and less race prone.

The net80211 layer has been updated as follows
 - all state/channel changes are serialised on the taskqueue.
 - ieee80211_new_state() always queues and can now be called from any context
 - scanning runs from a single taskq function and executes to completion. driver
   callbacks are synchronous so the channel, phy mode and rx filters are
   guaranteed to be set in hardware before probe request frames are
   transmitted.

Help and contributions from Sam Leffler.

Reviewed by:	sam
2009-05-02 15:14:18 +00:00

189 lines
5.9 KiB
C

/*-
* Copyright (c) 2002
* M Warner Losh <imp@freebsd.org>. All rights reserved.
* Copyright (c) 1997, 1998, 1999
* Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* Encryption controls. We can enable or disable encryption as
* well as specify up to 4 encryption keys. We can also specify
* which of the four keys will be used for transmit encryption.
*/
#define WI_RID_ENCRYPTION 0xFC20
#define WI_RID_AUTHTYPE 0xFC21
#define WI_RID_DEFLT_CRYPT_KEYS 0xFCB0
#define WI_RID_TX_CRYPT_KEY 0xFCB1
#define WI_RID_WEP_AVAIL 0xFD4F
#define WI_RID_P2_TX_CRYPT_KEY 0xFC23
#define WI_RID_P2_CRYPT_KEY0 0xFC24
#define WI_RID_P2_CRYPT_KEY1 0xFC25
#define WI_RID_MICROWAVE_OVEN 0xFC25
#define WI_RID_P2_CRYPT_KEY2 0xFC26
#define WI_RID_P2_CRYPT_KEY3 0xFC27
#define WI_RID_P2_ENCRYPTION 0xFC28
#define WI_RID_ROAMING_MODE 0xFC2D
#define WI_RID_CUR_TX_RATE 0xFD44 /* current TX rate */
#define WI_MAX_AID 256 /* max stations for ap operation */
struct wi_vap {
struct ieee80211vap wv_vap;
struct ieee80211_beacon_offsets wv_bo;
void (*wv_recv_mgmt)(struct ieee80211_node *,
struct mbuf *, int, int, int, u_int32_t);
int (*wv_newstate)(struct ieee80211vap *,
enum ieee80211_state, int);
};
#define WI_VAP(vap) ((struct wi_vap *)(vap))
struct wi_softc {
struct ifnet *sc_ifp;
device_t sc_dev;
struct mtx sc_mtx;
struct callout sc_watchdog;
int sc_unit;
int wi_gone;
int sc_enabled;
int sc_reset;
int sc_firmware_type;
#define WI_NOTYPE 0
#define WI_LUCENT 1
#define WI_INTERSIL 2
#define WI_SYMBOL 3
int sc_pri_firmware_ver; /* Primary firmware */
int sc_sta_firmware_ver; /* Station firmware */
unsigned int sc_nic_id; /* Type of NIC */
char * sc_nic_name;
int wi_bus_type; /* Bus attachment type */
struct resource * local;
int local_rid;
struct resource * iobase;
int iobase_rid;
struct resource * irq;
int irq_rid;
struct resource * mem;
int mem_rid;
bus_space_handle_t wi_localhandle;
bus_space_tag_t wi_localtag;
bus_space_handle_t wi_bhandle;
bus_space_tag_t wi_btag;
bus_space_handle_t wi_bmemhandle;
bus_space_tag_t wi_bmemtag;
void * wi_intrhand;
struct ieee80211_channel *wi_channel;
int wi_io_addr;
int wi_cmd_count;
int sc_flags;
int sc_if_flags;
int sc_bap_id;
int sc_bap_off;
int sc_porttype;
u_int16_t sc_portnum;
u_int16_t sc_encryption;
u_int16_t sc_monitor_port;
/* RSSI interpretation */
u_int16_t sc_min_rssi; /* clamp sc_min_rssi < RSSI */
u_int16_t sc_max_rssi; /* clamp RSSI < sc_max_rssi */
u_int16_t sc_dbm_offset; /* dBm ~ RSSI - sc_dbm_offset */
int sc_buflen; /* TX buffer size */
int sc_ntxbuf;
#define WI_NTXBUF 3
struct {
int d_fid;
int d_len;
} sc_txd[WI_NTXBUF]; /* TX buffers */
int sc_txnext; /* index of next TX */
int sc_txcur; /* index of current TX*/
int sc_tx_timer;
struct wi_counters sc_stats;
u_int16_t sc_ibss_port;
struct timeval sc_last_syn;
int sc_false_syns;
u_int16_t sc_txbuf[IEEE80211_MAX_LEN/2];
struct wi_tx_radiotap_header sc_tx_th;
int sc_tx_th_len;
struct wi_rx_radiotap_header sc_rx_th;
int sc_rx_th_len;
};
/* maximum consecutive false change-of-BSSID indications */
#define WI_MAX_FALSE_SYNS 10
#define WI_FLAGS_HAS_ENHSECURITY 0x0001
#define WI_FLAGS_HAS_WPASUPPORT 0x0002
#define WI_FLAGS_HAS_ROAMING 0x0020
#define WI_FLAGS_HAS_FRAGTHR 0x0200
#define WI_FLAGS_HAS_DBMADJUST 0x0400
struct wi_card_ident {
u_int16_t card_id;
char *card_name;
u_int8_t firm_type;
};
#define WI_PRISM_MIN_RSSI 0x1b
#define WI_PRISM_MAX_RSSI 0x9a
#define WI_PRISM_DBM_OFFSET 100 /* XXX */
#define WI_LUCENT_MIN_RSSI 47
#define WI_LUCENT_MAX_RSSI 138
#define WI_LUCENT_DBM_OFFSET 149
#define WI_RSSI_TO_DBM(sc, rssi) (MIN((sc)->sc_max_rssi, \
MAX((sc)->sc_min_rssi, (rssi))) - (sc)->sc_dbm_offset)
#define WI_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
#define WI_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
#define WI_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->sc_mtx, MA_OWNED)
int wi_attach(device_t);
int wi_detach(device_t);
void wi_shutdown(device_t);
int wi_alloc(device_t, int);
void wi_free(device_t);
extern devclass_t wi_devclass;
void wi_init(void *);
void wi_intr(void *);
int wi_mgmt_xmit(struct wi_softc *, caddr_t, int);
void wi_stop(struct wi_softc *, int);