79d2c5e857
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 Olivier Cochard, gjb@, mmoll@, op@ and lev@, who also participated in testing. Details here: https://wiki.freebsd.org/projects/ifnet/net80211 Still, drivers: ndis, wtap, mwl, ipw, bwn, wi, upgt, uath were not tested. Changes to mwl, ipw, bwn, wi, upgt are trivial and chances of problems are low. The wtap wasn't compilable even before this change. But the ndis driver is complex, and it is likely to be broken with this commit. Help with testing and debugging it is appreciated. Differential Revision: D2655, D2740 Sponsored by: Nginx, Inc. Sponsored by: Netflix
137 lines
3.4 KiB
C
137 lines
3.4 KiB
C
/* $FreeBSD$ */
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/*-
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* Copyright (c) 2005, 2006 Damien Bergamini <damien.bergamini@free.fr>
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* Copyright (c) 2006 Niall O'Higgins <niallo@openbsd.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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#define RUM_TX_LIST_COUNT 8
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#define RUM_TX_MINFREE 2
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struct rum_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 RT2573_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_DBM_ANTSIGNAL) | \
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(1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) | \
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(1 << IEEE80211_RADIOTAP_ANTENNA) | \
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0)
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struct rum_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 RT2573_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 rum_softc;
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struct rum_tx_data {
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STAILQ_ENTRY(rum_tx_data) next;
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struct rum_softc *sc;
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struct rum_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(, rum_tx_data) rum_txdhead;
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struct rum_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 RUM_VAP(vap) ((struct rum_vap *)(vap))
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enum {
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RUM_BULK_WR,
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RUM_BULK_RD,
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RUM_N_TRANSFER = 2,
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};
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struct rum_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 usb_xfer *sc_xfer[RUM_N_TRANSFER];
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uint8_t rf_rev;
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uint8_t rffreq;
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struct rum_tx_data tx_data[RUM_TX_LIST_COUNT];
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rum_txdhead tx_q;
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rum_txdhead tx_free;
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int tx_nfree;
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struct rum_rx_desc sc_rx_desc;
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struct mtx sc_mtx;
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uint32_t sta[6];
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uint32_t rf_regs[4];
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uint8_t txpow[44];
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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 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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int ext_2ghz_lna;
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int ext_5ghz_lna;
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int rssi_2ghz_corr;
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int rssi_5ghz_corr;
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uint8_t bbp17;
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struct rum_rx_radiotap_header sc_rxtap;
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int sc_rxtap_len;
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struct rum_tx_radiotap_header sc_txtap;
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int sc_txtap_len;
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};
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#define RUM_LOCK(sc) mtx_lock(&(sc)->sc_mtx)
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#define RUM_UNLOCK(sc) mtx_unlock(&(sc)->sc_mtx)
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#define RUM_LOCK_ASSERT(sc, t) mtx_assert(&(sc)->sc_mtx, t)
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