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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.
171 lines
4.7 KiB
C
171 lines
4.7 KiB
C
/* $FreeBSD$ */
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/*-
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* Copyright (c) 2004-2006
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* Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#define IPW_MAX_NSEG 1
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struct ipw_soft_bd {
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struct ipw_bd *bd;
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int type;
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#define IPW_SBD_TYPE_NOASSOC 0
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#define IPW_SBD_TYPE_COMMAND 1
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#define IPW_SBD_TYPE_HEADER 2
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#define IPW_SBD_TYPE_DATA 3
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void *priv;
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};
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struct ipw_soft_hdr {
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struct ipw_hdr hdr;
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bus_dmamap_t map;
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SLIST_ENTRY(ipw_soft_hdr) next;
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};
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struct ipw_soft_buf {
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struct mbuf *m;
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struct ieee80211_node *ni;
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bus_dmamap_t map;
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SLIST_ENTRY(ipw_soft_buf) next;
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};
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struct ipw_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_antsignal;
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int8_t wr_antnoise;
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};
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#define IPW_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_DB_ANTSIGNAL) | \
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(1 << IEEE80211_RADIOTAP_DB_ANTNOISE))
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struct ipw_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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};
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#define IPW_TX_RADIOTAP_PRESENT \
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((1 << IEEE80211_RADIOTAP_FLAGS) | \
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(1 << IEEE80211_RADIOTAP_CHANNEL))
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struct ipw_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 IPW_VAP(vap) ((struct ipw_vap *)(vap))
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struct ipw_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 mtx sc_mtx;
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struct task sc_init_task;
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struct callout sc_wdtimer; /* watchdog timer */
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uint32_t flags;
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#define IPW_FLAG_FW_INITED 0x0001
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#define IPW_FLAG_INIT_LOCKED 0x0002
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#define IPW_FLAG_HAS_RADIO_SWITCH 0x0004
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#define IPW_FLAG_HACK 0x0008
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#define IPW_FLAG_SCANNING 0x0010
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#define IPW_FLAG_ENABLED 0x0020
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#define IPW_FLAG_BUSY 0x0040
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#define IPW_FLAG_ASSOCIATING 0x0080
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#define IPW_FLAG_ASSOCIATED 0x0100
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#define IPW_FLAG_RUNNING 0x0200
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struct resource *irq;
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struct resource *mem;
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bus_space_tag_t sc_st;
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bus_space_handle_t sc_sh;
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void *sc_ih;
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const struct firmware *sc_firmware;
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int sc_tx_timer;
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int sc_scan_timer;
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bus_dma_tag_t parent_dmat;
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bus_dma_tag_t tbd_dmat;
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bus_dma_tag_t rbd_dmat;
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bus_dma_tag_t status_dmat;
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bus_dma_tag_t cmd_dmat;
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bus_dma_tag_t hdr_dmat;
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bus_dma_tag_t txbuf_dmat;
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bus_dma_tag_t rxbuf_dmat;
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bus_dmamap_t tbd_map;
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bus_dmamap_t rbd_map;
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bus_dmamap_t status_map;
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bus_dmamap_t cmd_map;
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bus_addr_t tbd_phys;
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bus_addr_t rbd_phys;
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bus_addr_t status_phys;
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struct ipw_bd *tbd_list;
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struct ipw_bd *rbd_list;
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struct ipw_status *status_list;
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struct ipw_cmd cmd;
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struct ipw_soft_bd stbd_list[IPW_NTBD];
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struct ipw_soft_buf tx_sbuf_list[IPW_NDATA];
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struct ipw_soft_hdr shdr_list[IPW_NDATA];
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struct ipw_soft_bd srbd_list[IPW_NRBD];
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struct ipw_soft_buf rx_sbuf_list[IPW_NRBD];
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SLIST_HEAD(, ipw_soft_hdr) free_shdr;
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SLIST_HEAD(, ipw_soft_buf) free_sbuf;
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uint32_t table1_base;
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uint32_t table2_base;
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uint32_t txcur;
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uint32_t txold;
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uint32_t rxcur;
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int txfree;
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struct ipw_rx_radiotap_header sc_rxtap;
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struct ipw_tx_radiotap_header sc_txtap;
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};
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/*
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* NB.: This models the only instance of async locking in ipw_init_locked
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* and must be kept in sync.
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*/
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#define IPW_LOCK(sc) mtx_lock(&sc->sc_mtx);
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#define IPW_UNLOCK(sc) mtx_unlock(&sc->sc_mtx);
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#define IPW_LOCK_ASSERT(sc) mtx_assert(&(sc)->sc_mtx, MA_OWNED)
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