7a79cebfba
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.
189 lines
5.2 KiB
C
189 lines
5.2 KiB
C
/* $FreeBSD$ */
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/*-
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* Copyright (c) 2008 Weongyo Jeong <weongyo@FreeBSD.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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enum {
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URTW_8187B_BULK_RX,
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URTW_8187B_BULK_TX_STATUS,
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URTW_8187B_BULK_TX_BE,
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URTW_8187B_BULK_TX_BK,
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URTW_8187B_BULK_TX_VI,
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URTW_8187B_BULK_TX_VO,
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URTW_8187B_BULK_TX_EP12,
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URTW_8187B_N_XFERS = 7
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};
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enum {
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URTW_8187L_BULK_RX,
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URTW_8187L_BULK_TX_LOW,
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URTW_8187L_BULK_TX_NORMAL,
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URTW_8187L_N_XFERS = 3
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};
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/* XXX no definition at net80211? */
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#define URTW_MAX_CHANNELS 15
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struct urtw_data {
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struct urtw_softc *sc;
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uint8_t *buf;
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uint16_t buflen;
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struct mbuf *m;
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struct ieee80211_node *ni; /* NB: tx only */
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STAILQ_ENTRY(urtw_data) next;
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};
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typedef STAILQ_HEAD(, urtw_data) urtw_datahead;
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/* XXX not correct.. */
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#define URTW_MIN_RXBUFSZ \
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(sizeof(struct ieee80211_frame_min))
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#define URTW_RX_DATA_LIST_COUNT 4
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#define URTW_TX_DATA_LIST_COUNT 16
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#define URTW_RX_MAXSIZE 0x9c4
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#define URTW_TX_MAXSIZE 0x9c4
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#define URTW_TX_MAXRETRY 11
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struct urtw_rx_radiotap_header {
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struct ieee80211_radiotap_header wr_ihdr;
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uint8_t wr_flags;
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uint16_t wr_chan_freq;
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uint16_t wr_chan_flags;
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int8_t wr_dbm_antsignal;
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} __packed __aligned(8);
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#define URTW_RX_RADIOTAP_PRESENT \
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((1 << IEEE80211_RADIOTAP_FLAGS) | \
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(1 << IEEE80211_RADIOTAP_CHANNEL) | \
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(1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL))
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struct urtw_tx_radiotap_header {
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struct ieee80211_radiotap_header wt_ihdr;
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uint8_t wt_flags;
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uint16_t wt_chan_freq;
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uint16_t wt_chan_flags;
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} __packed __aligned(8);
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#define URTW_TX_RADIOTAP_PRESENT \
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((1 << IEEE80211_RADIOTAP_FLAGS) | \
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(1 << IEEE80211_RADIOTAP_CHANNEL))
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struct urtw_stats {
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unsigned int txrates[12];
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};
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struct urtw_vap {
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struct ieee80211vap vap;
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int (*newstate)(struct ieee80211vap *,
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enum ieee80211_state, int);
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};
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#define URTW_VAP(vap) ((struct urtw_vap *)(vap))
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struct urtw_softc {
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struct ieee80211com sc_ic;
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struct mbufq sc_snd;
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device_t sc_dev;
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struct usb_device *sc_udev;
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struct mtx sc_mtx;
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void *sc_tx_dma_buf;
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int sc_debug;
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int sc_flags;
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#define URTW_INIT_ONCE (1 << 1)
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#define URTW_RTL8187B (1 << 2)
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#define URTW_RTL8187B_REV_B (1 << 3)
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#define URTW_RTL8187B_REV_D (1 << 4)
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#define URTW_RTL8187B_REV_E (1 << 5)
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#define URTW_DETACHED (1 << 6)
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#define URTW_RUNNING (1 << 7)
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enum ieee80211_state sc_state;
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int sc_epromtype;
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#define URTW_EEPROM_93C46 0
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#define URTW_EEPROM_93C56 1
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uint8_t sc_crcmon;
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struct ieee80211_channel *sc_curchan;
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/* for RF */
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usb_error_t (*sc_rf_init)(struct urtw_softc *);
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usb_error_t (*sc_rf_set_chan)(struct urtw_softc *,
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int);
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usb_error_t (*sc_rf_set_sens)(struct urtw_softc *,
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int);
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usb_error_t (*sc_rf_stop)(struct urtw_softc *);
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uint8_t sc_rfchip;
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uint32_t sc_max_sens;
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uint32_t sc_sens;
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/* for LED */
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struct usb_callout sc_led_ch;
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struct task sc_led_task;
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uint8_t sc_psr;
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uint8_t sc_strategy;
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#define URTW_LED_GPIO 1
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uint8_t sc_gpio_ledon;
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uint8_t sc_gpio_ledinprogress;
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uint8_t sc_gpio_ledstate;
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uint8_t sc_gpio_ledpin;
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uint8_t sc_gpio_blinktime;
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uint8_t sc_gpio_blinkstate;
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/* RX/TX */
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struct usb_xfer *sc_xfer[URTW_8187B_N_XFERS];
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#define URTW_PRIORITY_LOW 0
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#define URTW_PRIORITY_NORMAL 1
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#define URTW_DATA_TIMEOUT 10000 /* 10 sec */
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#define URTW_8187B_TXPIPE_BE 0x6 /* best effort */
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#define URTW_8187B_TXPIPE_BK 0x7 /* background */
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#define URTW_8187B_TXPIPE_VI 0x5 /* video */
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#define URTW_8187B_TXPIPE_VO 0x4 /* voice */
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#define URTW_8187B_TXPIPE_MAX 4
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struct urtw_data sc_rx[URTW_RX_DATA_LIST_COUNT];
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urtw_datahead sc_rx_active;
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urtw_datahead sc_rx_inactive;
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struct urtw_data sc_tx[URTW_TX_DATA_LIST_COUNT];
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urtw_datahead sc_tx_active;
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urtw_datahead sc_tx_inactive;
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urtw_datahead sc_tx_pending;
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uint8_t sc_rts_retry;
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uint8_t sc_tx_retry;
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uint8_t sc_preamble_mode;
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#define URTW_PREAMBLE_MODE_SHORT 1
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#define URTW_PREAMBLE_MODE_LONG 2
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struct callout sc_watchdog_ch;
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int sc_txtimer;
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int sc_currate;
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/* TX power */
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uint8_t sc_txpwr_cck[URTW_MAX_CHANNELS];
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uint8_t sc_txpwr_cck_base;
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uint8_t sc_txpwr_ofdm[URTW_MAX_CHANNELS];
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uint8_t sc_txpwr_ofdm_base;
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uint8_t sc_acmctl;
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uint64_t sc_txstatus; /* only for 8187B */
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struct task sc_updateslot_task;
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struct urtw_stats sc_stats;
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struct urtw_rx_radiotap_header sc_rxtap;
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int sc_rxtap_len;
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struct urtw_tx_radiotap_header sc_txtap;
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int sc_txtap_len;
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};
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#define URTW_LOCK(sc) mtx_lock(&(sc)->sc_mtx)
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#define URTW_UNLOCK(sc) mtx_unlock(&(sc)->sc_mtx)
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#define URTW_ASSERT_LOCKED(sc) mtx_assert(&(sc)->sc_mtx, MA_OWNED)
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