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.
137 lines
3.4 KiB
C
137 lines
3.4 KiB
C
/* $FreeBSD$ */
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/*-
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* Copyright (c) 2005
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* Damien Bergamini <damien.bergamini@free.fr>
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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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#define RAL_TX_LIST_COUNT 8
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#define RAL_TX_MINFREE 2
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#define URAL_SCAN_START 1
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#define URAL_SCAN_END 2
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#define URAL_SET_CHANNEL 3
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struct ural_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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uint8_t wr_rate;
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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_antsignal;
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int8_t wr_antnoise;
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uint8_t wr_antenna;
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} __packed __aligned(8);
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#define RAL_RX_RADIOTAP_PRESENT \
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((1 << IEEE80211_RADIOTAP_FLAGS) | \
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(1 << IEEE80211_RADIOTAP_RATE) | \
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(1 << IEEE80211_RADIOTAP_CHANNEL) | \
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(1 << IEEE80211_RADIOTAP_ANTENNA) | \
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(1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) | \
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(1 << IEEE80211_RADIOTAP_DBM_ANTNOISE))
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struct ural_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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uint8_t wt_rate;
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uint16_t wt_chan_freq;
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uint16_t wt_chan_flags;
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uint8_t wt_antenna;
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} __packed __aligned(8);
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#define RAL_TX_RADIOTAP_PRESENT \
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((1 << IEEE80211_RADIOTAP_FLAGS) | \
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(1 << IEEE80211_RADIOTAP_RATE) | \
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(1 << IEEE80211_RADIOTAP_CHANNEL) | \
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(1 << IEEE80211_RADIOTAP_ANTENNA))
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struct ural_softc;
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struct ural_tx_data {
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STAILQ_ENTRY(ural_tx_data) next;
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struct ural_softc *sc;
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struct ural_tx_desc desc;
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struct mbuf *m;
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struct ieee80211_node *ni;
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int rate;
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};
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typedef STAILQ_HEAD(, ural_tx_data) ural_txdhead;
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struct ural_vap {
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struct ieee80211vap vap;
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struct ieee80211_beacon_offsets bo;
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struct usb_callout ratectl_ch;
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struct task ratectl_task;
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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 URAL_VAP(vap) ((struct ural_vap *)(vap))
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enum {
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URAL_BULK_WR,
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URAL_BULK_RD,
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URAL_N_TRANSFER = 2,
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};
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struct ural_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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uint32_t asic_rev;
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uint8_t rf_rev;
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struct usb_xfer *sc_xfer[URAL_N_TRANSFER];
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struct ural_tx_data tx_data[RAL_TX_LIST_COUNT];
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ural_txdhead tx_q;
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ural_txdhead tx_free;
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int tx_nfree;
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struct ural_rx_desc sc_rx_desc;
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struct mtx sc_mtx;
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uint16_t sta[11];
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uint32_t rf_regs[4];
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uint8_t txpow[14];
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u_int sc_detached:1,
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sc_running:1;
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struct {
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uint8_t val;
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uint8_t reg;
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} __packed bbp_prom[16];
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int led_mode;
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int hw_radio;
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int rx_ant;
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int tx_ant;
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int nb_ant;
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struct ural_rx_radiotap_header sc_rxtap;
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int sc_rxtap_len;
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struct ural_tx_radiotap_header sc_txtap;
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int sc_txtap_len;
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};
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#define RAL_LOCK(sc) mtx_lock(&(sc)->sc_mtx)
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#define RAL_UNLOCK(sc) mtx_unlock(&(sc)->sc_mtx)
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#define RAL_LOCK_ASSERT(sc, t) mtx_assert(&(sc)->sc_mtx, t)
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