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freebsd-dev/sys/dev/wi/if_wivar.h
Gleb Smirnoff 7a79cebfba Replay r286410. Change KPI of how device drivers that provide wireless 
connectivity interact with the net80211 stack.

Historical background: originally wireless devices created an interface,
just like Ethernet devices do. Name of an interface matched the name of
the driver that created. Later, wlan(4) layer was introduced, and the
wlanX interfaces become the actual interface, leaving original ones as
"a parent interface" of wlanX. Kernelwise, the KPI between net80211 layer
and a driver became a mix of methods that pass a pointer to struct ifnet
as identifier and methods that pass pointer to struct ieee80211com. From
user point of view, the parent interface just hangs on in the ifconfig
list, and user can't do anything useful with it.

Now, the struct ifnet goes away. The struct ieee80211com is the only
KPI between a device driver and net80211. Details:

- The struct ieee80211com is embedded into drivers softc.
- Packets are sent via new ic_transmit method, which is very much like
  the previous if_transmit.
- Bringing parent up/down is done via new ic_parent method, which notifies
  driver about any changes: number of wlan(4) interfaces, number of them
  in promisc or allmulti state.
- Device specific ioctls (if any) are received on new ic_ioctl method.
- Packets/errors accounting are done by the stack. In certain cases, when
  driver experiences errors and can not attribute them to any specific
  interface, driver updates ic_oerrors or ic_ierrors counters.

Details on interface configuration with new world order:
- A sequence of commands needed to bring up wireless DOESN"T change.
- /etc/rc.conf parameters DON'T change.
- List of devices that can be used to create wlan(4) interfaces is
  now provided by net.wlan.devices sysctl.

Most drivers in this change were converted by me, except of wpi(4),
that was done by Andriy Voskoboinyk. Big thanks to Kevin Lo for testing
changes to at least 8 drivers. Thanks to pluknet@, Oliver Hartmann,
Olivier Cochard, gjb@, mmoll@, op@ and lev@, who also participated in
testing.

Reviewed by:	adrian
Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2015-08-27 08:56:39 +00:00

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/*-
* 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, const struct ieee80211_rx_stats *rxs, int, int);
int (*wv_newstate)(struct ieee80211vap *,
enum ieee80211_state, int);
};
#define WI_VAP(vap) ((struct wi_vap *)(vap))
struct wi_softc {
struct ieee80211com sc_ic;
struct mbufq sc_snd;
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_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;
struct wi_rx_radiotap_header sc_rx_th;
};
/* 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
#define WI_FLAGS_RUNNING 0x0800
#define WI_FLAGS_PROMISC 0x1000
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);
int wi_shutdown(device_t);
int wi_alloc(device_t, int);
void wi_free(device_t);
extern devclass_t wi_devclass;
void wi_intr(void *);
int wi_mgmt_xmit(struct wi_softc *, caddr_t, int);
void wi_stop(struct wi_softc *, int);
void wi_init(struct wi_softc *);
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