123 lines
4.1 KiB
C
123 lines
4.1 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2023 Farhan Khan <farhan@farhan.codes>
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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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND 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 ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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 OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* This is a template driver for FreeBSD's net80211 layer.
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* This is intended as a learning tool on the minimum implementation
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* of the net80211 layer entirely in software.
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*
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* This driver does not implement the USB, PCIe or SDIO layers, which would ordinarily
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* be responsible for the match, power on/off, state management, etc. Instead, this code
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* implements everything in software.
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*
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*/
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/sockio.h>
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#include <sys/sysctl.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/mbuf.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/endian.h>
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#include <sys/kdb.h>
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#include <net/bpf.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/if_arp.h>
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#include <net/ethernet.h>
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#include <net/if_dl.h>
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#include <net/if_media.h>
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#include <net/if_types.h>
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#include <net80211/ieee80211_var.h>
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#include <net80211/ieee80211_regdomain.h>
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#include <net80211/ieee80211_radiotap.h>
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#include <net80211/ieee80211_ratectl.h>
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#include <sys/param.h>
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#include <sys/module.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/types.h>
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#include <sys/malloc.h>
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#include <net/bpf.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/if_arp.h>
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#include <net/ethernet.h>
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#include <net/if_dl.h>
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#include <net/if_media.h>
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#include <net/if_types.h>
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/*
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* BSD drivers store driver instance-specific variables in their "softc"
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* structure.
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*/
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struct i3e_softc {
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struct ieee80211com sc_ic; // Used to store methods of how the base OS interacts with the driver andr how it interacts with VAP
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struct mtx sc_mtx; // Device-wide locking mutex
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int sc_detached;
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int sc_running;
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/*
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* mbufq and its associated functions are not clearly defined anywhere. It is an implementation of
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* `struct mbuf`. It is a method of queueing frames to be sent in memory prior to sending it.
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* The purpose of this is performance, specifically when software operates faster than the hardware
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* can push hardware in the data out.
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* Its associated functions are located in sys/sys/mbuf.h.
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*/
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struct mbufq sc_snd;
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};
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static struct i3e_softc *sc;
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// This structure overrides ieee80211vap, so an instance of it must come first.
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struct i3e_vap {
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struct ieee80211vap vap;
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int (*iv_newstate)(struct ieee80211vap *, enum ieee80211_state, int);
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};
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#define I3E_VAP(vap) ((struct i3e_vap *)(vap))
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//#define I3E_LOCK_INIT(_sc) mtx_init(&(sc)->sc_mtx, device_get_nameunit((sc)->sc_dev), MTX_NETWORK_LOCK, MTX_DEF);
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#define I3E_LOCK_INIT(_sc) mtx_init(&(sc)->sc_mtx, "i3e0", MTX_NETWORK_LOCK, MTX_DEF);
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#define I3E_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
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#define I3E_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
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#define I3E_VAP(vap) ((struct i3e_vap *)(vap))
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