mac80211_hwsim.c 40.8 KB
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/*
 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

/*
 * TODO:
 * - IBSS mode simulation (Beacon transmission with competition for "air time")
 * - RX filtering based on filter configuration (data->rx_filter)
 */

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#include <linux/list.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <net/dst.h>
#include <net/xfrm.h>
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#include <net/mac80211.h>
#include <net/ieee80211_radiotap.h>
#include <linux/if_arp.h>
#include <linux/rtnetlink.h>
#include <linux/etherdevice.h>
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#include <linux/debugfs.h>
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MODULE_AUTHOR("Jouni Malinen");
MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
MODULE_LICENSE("GPL");

static int radios = 2;
module_param(radios, int, 0444);
MODULE_PARM_DESC(radios, "Number of simulated radios");

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static bool fake_hw_scan;
module_param(fake_hw_scan, bool, 0444);
MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");

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/**
 * enum hwsim_regtest - the type of regulatory tests we offer
 *
 * These are the different values you can use for the regtest
 * module parameter. This is useful to help test world roaming
 * and the driver regulatory_hint() call and combinations of these.
 * If you want to do specific alpha2 regulatory domain tests simply
 * use the userspace regulatory request as that will be respected as
 * well without the need of this module parameter. This is designed
 * only for testing the driver regulatory request, world roaming
 * and all possible combinations.
 *
 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
 * 	this is the default value.
 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
 *	hint, only one driver regulatory hint will be sent as such the
 * 	secondary radios are expected to follow.
 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
 * 	request with all radios reporting the same regulatory domain.
 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
 * 	different regulatory domains requests. Expected behaviour is for
 * 	an intersection to occur but each device will still use their
 * 	respective regulatory requested domains. Subsequent radios will
 * 	use the resulting intersection.
 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We acomplish
 *	this by using a custom beacon-capable regulatory domain for the first
 *	radio. All other device world roam.
 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
 * 	domain requests. All radios will adhere to this custom world regulatory
 * 	domain.
 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
 * 	domain requests. The first radio will adhere to the first custom world
 * 	regulatory domain, the second one to the second custom world regulatory
 * 	domain. All other devices will world roam.
 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
 *	settings, only the first radio will send a regulatory domain request
 *	and use strict settings. The rest of the radios are expected to follow.
 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
 *	settings. All radios will adhere to this.
 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
 *	domain settings, combined with secondary driver regulatory domain
 *	settings. The first radio will get a strict regulatory domain setting
 *	using the first driver regulatory request and the second radio will use
 *	non-strict settings using the second driver regulatory request. All
 *	other devices should follow the intersection created between the
 *	first two.
 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 * 	at least 6 radios for a complete test. We will test in this order:
 * 	1 - driver custom world regulatory domain
 * 	2 - second custom world regulatory domain
 * 	3 - first driver regulatory domain request
 * 	4 - second driver regulatory domain request
 * 	5 - strict regulatory domain settings using the third driver regulatory
 * 	    domain request
 * 	6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 * 	           regulatory requests.
 */
enum hwsim_regtest {
	HWSIM_REGTEST_DISABLED = 0,
	HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
	HWSIM_REGTEST_DRIVER_REG_ALL = 2,
	HWSIM_REGTEST_DIFF_COUNTRY = 3,
	HWSIM_REGTEST_WORLD_ROAM = 4,
	HWSIM_REGTEST_CUSTOM_WORLD = 5,
	HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
	HWSIM_REGTEST_STRICT_FOLLOW = 7,
	HWSIM_REGTEST_STRICT_ALL = 8,
	HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
	HWSIM_REGTEST_ALL = 10,
};

/* Set to one of the HWSIM_REGTEST_* values above */
static int regtest = HWSIM_REGTEST_DISABLED;
module_param(regtest, int, 0444);
MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");

static const char *hwsim_alpha2s[] = {
	"FI",
	"AL",
	"US",
	"DE",
	"JP",
	"AL",
};

static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
	.n_reg_rules = 4,
	.alpha2 =  "99",
	.reg_rules = {
		REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
		REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
		REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
		REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
	}
};

static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
	.n_reg_rules = 2,
	.alpha2 =  "99",
	.reg_rules = {
		REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
		REG_RULE(5725-10, 5850+10, 40, 0, 30,
			NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
	}
};

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struct hwsim_vif_priv {
	u32 magic;
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	u8 bssid[ETH_ALEN];
	bool assoc;
	u16 aid;
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};

#define HWSIM_VIF_MAGIC	0x69537748

static inline void hwsim_check_magic(struct ieee80211_vif *vif)
{
	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
	WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
}

static inline void hwsim_set_magic(struct ieee80211_vif *vif)
{
	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
	vp->magic = HWSIM_VIF_MAGIC;
}

static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
{
	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
	vp->magic = 0;
}
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struct hwsim_sta_priv {
	u32 magic;
};

#define HWSIM_STA_MAGIC	0x6d537748

static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
{
	struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
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	WARN_ON(sp->magic != HWSIM_STA_MAGIC);
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}

static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
{
	struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
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	sp->magic = HWSIM_STA_MAGIC;
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}

static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
{
	struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
	sp->magic = 0;
}

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static struct class *hwsim_class;

static struct net_device *hwsim_mon; /* global monitor netdev */

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#define CHAN2G(_freq)  { \
	.band = IEEE80211_BAND_2GHZ, \
	.center_freq = (_freq), \
	.hw_value = (_freq), \
	.max_power = 20, \
}

#define CHAN5G(_freq) { \
	.band = IEEE80211_BAND_5GHZ, \
	.center_freq = (_freq), \
	.hw_value = (_freq), \
	.max_power = 20, \
}

static const struct ieee80211_channel hwsim_channels_2ghz[] = {
	CHAN2G(2412), /* Channel 1 */
	CHAN2G(2417), /* Channel 2 */
	CHAN2G(2422), /* Channel 3 */
	CHAN2G(2427), /* Channel 4 */
	CHAN2G(2432), /* Channel 5 */
	CHAN2G(2437), /* Channel 6 */
	CHAN2G(2442), /* Channel 7 */
	CHAN2G(2447), /* Channel 8 */
	CHAN2G(2452), /* Channel 9 */
	CHAN2G(2457), /* Channel 10 */
	CHAN2G(2462), /* Channel 11 */
	CHAN2G(2467), /* Channel 12 */
	CHAN2G(2472), /* Channel 13 */
	CHAN2G(2484), /* Channel 14 */
};
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static const struct ieee80211_channel hwsim_channels_5ghz[] = {
	CHAN5G(5180), /* Channel 36 */
	CHAN5G(5200), /* Channel 40 */
	CHAN5G(5220), /* Channel 44 */
	CHAN5G(5240), /* Channel 48 */

	CHAN5G(5260), /* Channel 52 */
	CHAN5G(5280), /* Channel 56 */
	CHAN5G(5300), /* Channel 60 */
	CHAN5G(5320), /* Channel 64 */

	CHAN5G(5500), /* Channel 100 */
	CHAN5G(5520), /* Channel 104 */
	CHAN5G(5540), /* Channel 108 */
	CHAN5G(5560), /* Channel 112 */
	CHAN5G(5580), /* Channel 116 */
	CHAN5G(5600), /* Channel 120 */
	CHAN5G(5620), /* Channel 124 */
	CHAN5G(5640), /* Channel 128 */
	CHAN5G(5660), /* Channel 132 */
	CHAN5G(5680), /* Channel 136 */
	CHAN5G(5700), /* Channel 140 */

	CHAN5G(5745), /* Channel 149 */
	CHAN5G(5765), /* Channel 153 */
	CHAN5G(5785), /* Channel 157 */
	CHAN5G(5805), /* Channel 161 */
	CHAN5G(5825), /* Channel 165 */
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};

static const struct ieee80211_rate hwsim_rates[] = {
	{ .bitrate = 10 },
	{ .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
	{ .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
	{ .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
	{ .bitrate = 60 },
	{ .bitrate = 90 },
	{ .bitrate = 120 },
	{ .bitrate = 180 },
	{ .bitrate = 240 },
	{ .bitrate = 360 },
	{ .bitrate = 480 },
	{ .bitrate = 540 }
};

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static spinlock_t hwsim_radio_lock;
static struct list_head hwsim_radios;

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struct mac80211_hwsim_data {
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	struct list_head list;
	struct ieee80211_hw *hw;
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	struct device *dev;
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	struct ieee80211_supported_band bands[2];
	struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
	struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
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	struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];

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	struct mac_address addresses[2];

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	struct ieee80211_channel *channel;
	unsigned long beacon_int; /* in jiffies unit */
	unsigned int rx_filter;
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	bool started, idle, scanning;
	struct mutex mutex;
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	struct timer_list beacon_timer;
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	enum ps_mode {
		PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
	} ps;
	bool ps_poll_pending;
	struct dentry *debugfs;
	struct dentry *debugfs_ps;
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	/*
	 * Only radios in the same group can communicate together (the
	 * channel has to match too). Each bit represents a group. A
	 * radio can be in more then one group.
	 */
	u64 group;
	struct dentry *debugfs_group;
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};


struct hwsim_radiotap_hdr {
	struct ieee80211_radiotap_header hdr;
	u8 rt_flags;
	u8 rt_rate;
	__le16 rt_channel;
	__le16 rt_chbitmask;
} __attribute__ ((packed));


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static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
					struct net_device *dev)
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{
	/* TODO: allow packet injection */
	dev_kfree_skb(skb);
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	return NETDEV_TX_OK;
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}


static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
				      struct sk_buff *tx_skb)
{
	struct mac80211_hwsim_data *data = hw->priv;
	struct sk_buff *skb;
	struct hwsim_radiotap_hdr *hdr;
	u16 flags;
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
	struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);

	if (!netif_running(hwsim_mon))
		return;

	skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
	if (skb == NULL)
		return;

	hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
	hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
	hdr->hdr.it_pad = 0;
	hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
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	hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
					  (1 << IEEE80211_RADIOTAP_RATE) |
					  (1 << IEEE80211_RADIOTAP_CHANNEL));
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	hdr->rt_flags = 0;
	hdr->rt_rate = txrate->bitrate / 5;
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	hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
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	flags = IEEE80211_CHAN_2GHZ;
	if (txrate->flags & IEEE80211_RATE_ERP_G)
		flags |= IEEE80211_CHAN_OFDM;
	else
		flags |= IEEE80211_CHAN_CCK;
	hdr->rt_chbitmask = cpu_to_le16(flags);

	skb->dev = hwsim_mon;
	skb_set_mac_header(skb, 0);
	skb->ip_summed = CHECKSUM_UNNECESSARY;
	skb->pkt_type = PACKET_OTHERHOST;
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	skb->protocol = htons(ETH_P_802_2);
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	memset(skb->cb, 0, sizeof(skb->cb));
	netif_rx(skb);
}


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static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
{
	struct mac80211_hwsim_data *data = hw->priv;
	struct sk_buff *skb;
	struct hwsim_radiotap_hdr *hdr;
	u16 flags;
	struct ieee80211_hdr *hdr11;

	if (!netif_running(hwsim_mon))
		return;

	skb = dev_alloc_skb(100);
	if (skb == NULL)
		return;

	hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
	hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
	hdr->hdr.it_pad = 0;
	hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
	hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
					  (1 << IEEE80211_RADIOTAP_CHANNEL));
	hdr->rt_flags = 0;
	hdr->rt_rate = 0;
	hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
	flags = IEEE80211_CHAN_2GHZ;
	hdr->rt_chbitmask = cpu_to_le16(flags);

	hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
	hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
					   IEEE80211_STYPE_ACK);
	hdr11->duration_id = cpu_to_le16(0);
	memcpy(hdr11->addr1, addr, ETH_ALEN);

	skb->dev = hwsim_mon;
	skb_set_mac_header(skb, 0);
	skb->ip_summed = CHECKSUM_UNNECESSARY;
	skb->pkt_type = PACKET_OTHERHOST;
	skb->protocol = htons(ETH_P_802_2);
	memset(skb->cb, 0, sizeof(skb->cb));
	netif_rx(skb);
}


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static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
			   struct sk_buff *skb)
{
	switch (data->ps) {
	case PS_DISABLED:
		return true;
	case PS_ENABLED:
		return false;
	case PS_AUTO_POLL:
		/* TODO: accept (some) Beacons by default and other frames only
		 * if pending PS-Poll has been sent */
		return true;
	case PS_MANUAL_POLL:
		/* Allow unicast frames to own address if there is a pending
		 * PS-Poll */
		if (data->ps_poll_pending &&
		    memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
			   ETH_ALEN) == 0) {
			data->ps_poll_pending = false;
			return true;
		}
		return false;
	}

	return true;
}


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struct mac80211_hwsim_addr_match_data {
	bool ret;
	const u8 *addr;
};

static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
				     struct ieee80211_vif *vif)
{
	struct mac80211_hwsim_addr_match_data *md = data;
	if (memcmp(mac, md->addr, ETH_ALEN) == 0)
		md->ret = true;
}


static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
				      const u8 *addr)
{
	struct mac80211_hwsim_addr_match_data md;

	if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
		return true;

	md.ret = false;
	md.addr = addr;
	ieee80211_iterate_active_interfaces_atomic(data->hw,
						   mac80211_hwsim_addr_iter,
						   &md);

	return md.ret;
}


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static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
				    struct sk_buff *skb)
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{
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	struct mac80211_hwsim_data *data = hw->priv, *data2;
	bool ack = false;
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	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
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	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
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	struct ieee80211_rx_status rx_status;
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	if (data->idle) {
		printk(KERN_DEBUG "%s: Trying to TX when idle - reject\n",
		       wiphy_name(hw->wiphy));
		return false;
	}

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	memset(&rx_status, 0, sizeof(rx_status));
	/* TODO: set mactime */
	rx_status.freq = data->channel->center_freq;
	rx_status.band = data->channel->band;
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	rx_status.rate_idx = info->control.rates[0].idx;
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	/* TODO: simulate real signal strength (and optional packet loss) */
	rx_status.signal = -50;
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	if (data->ps != PS_DISABLED)
		hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);

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	/* release the skb's source info */
	skb_orphan(skb);
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	skb_dst_drop(skb);
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	skb->mark = 0;
	secpath_reset(skb);
	nf_reset(skb);

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	/* Copy skb to all enabled radios that are on the current frequency */
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	spin_lock(&hwsim_radio_lock);
	list_for_each_entry(data2, &hwsim_radios, list) {
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		struct sk_buff *nskb;

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		if (data == data2)
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			continue;
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		if (data2->idle || !data2->started ||
		    !hwsim_ps_rx_ok(data2, skb) ||
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		    !data->channel || !data2->channel ||
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		    data->channel->center_freq != data2->channel->center_freq ||
		    !(data->group & data2->group))
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			continue;

		nskb = skb_copy(skb, GFP_ATOMIC);
		if (nskb == NULL)
			continue;

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		if (mac80211_hwsim_addr_match(data2, hdr->addr1))
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			ack = true;
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		memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
		ieee80211_rx_irqsafe(data2->hw, nskb);
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	}
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	spin_unlock(&hwsim_radio_lock);
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	return ack;
}


static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
{
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	bool ack;
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	struct ieee80211_tx_info *txi;

	mac80211_hwsim_monitor_rx(hw, skb);

	if (skb->len < 10) {
		/* Should not happen; just a sanity check for addr1 use */
		dev_kfree_skb(skb);
		return NETDEV_TX_OK;
	}

	ack = mac80211_hwsim_tx_frame(hw, skb);
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	if (ack && skb->len >= 16) {
		struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
		mac80211_hwsim_monitor_ack(hw, hdr->addr2);
	}
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	txi = IEEE80211_SKB_CB(skb);
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	if (txi->control.vif)
		hwsim_check_magic(txi->control.vif);
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	if (txi->control.sta)
		hwsim_check_sta_magic(txi->control.sta);
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	ieee80211_tx_info_clear_status(txi);
	if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
		txi->flags |= IEEE80211_TX_STAT_ACK;
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	ieee80211_tx_status_irqsafe(hw, skb);
	return NETDEV_TX_OK;
}


static int mac80211_hwsim_start(struct ieee80211_hw *hw)
{
	struct mac80211_hwsim_data *data = hw->priv;
	printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
	data->started = 1;
	return 0;
}


static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
{
	struct mac80211_hwsim_data *data = hw->priv;
	data->started = 0;
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	del_timer(&data->beacon_timer);
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	printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
}


static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
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					struct ieee80211_vif *vif)
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{
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	printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
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	       wiphy_name(hw->wiphy), __func__, vif->type,
	       vif->addr);
	hwsim_set_magic(vif);
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	return 0;
}


static void mac80211_hwsim_remove_interface(
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	struct ieee80211_hw *hw, struct ieee80211_vif *vif)
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{
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	printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
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	       wiphy_name(hw->wiphy), __func__, vif->type,
	       vif->addr);
	hwsim_check_magic(vif);
	hwsim_clear_magic(vif);
613 614 615 616 617 618 619 620 621 622
}


static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
				     struct ieee80211_vif *vif)
{
	struct ieee80211_hw *hw = arg;
	struct sk_buff *skb;
	struct ieee80211_tx_info *info;

623 624
	hwsim_check_magic(vif);

625 626
	if (vif->type != NL80211_IFTYPE_AP &&
	    vif->type != NL80211_IFTYPE_MESH_POINT)
627 628 629 630 631 632 633 634
		return;

	skb = ieee80211_beacon_get(hw, vif);
	if (skb == NULL)
		return;
	info = IEEE80211_SKB_CB(skb);

	mac80211_hwsim_monitor_rx(hw, skb);
635
	mac80211_hwsim_tx_frame(hw, skb);
636 637 638 639 640 641 642 643 644
	dev_kfree_skb(skb);
}


static void mac80211_hwsim_beacon(unsigned long arg)
{
	struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
	struct mac80211_hwsim_data *data = hw->priv;

645
	if (!data->started)
646 647
		return;

J
Jouni Malinen 已提交
648 649
	ieee80211_iterate_active_interfaces_atomic(
		hw, mac80211_hwsim_beacon_tx, hw);
650 651 652 653 654

	data->beacon_timer.expires = jiffies + data->beacon_int;
	add_timer(&data->beacon_timer);
}

655 656 657 658 659 660
static const char *hwsim_chantypes[] = {
	[NL80211_CHAN_NO_HT] = "noht",
	[NL80211_CHAN_HT20] = "ht20",
	[NL80211_CHAN_HT40MINUS] = "ht40-",
	[NL80211_CHAN_HT40PLUS] = "ht40+",
};
661

662
static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
663 664
{
	struct mac80211_hwsim_data *data = hw->priv;
665
	struct ieee80211_conf *conf = &hw->conf;
666 667 668 669 670 671 672 673
	static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
		[IEEE80211_SMPS_AUTOMATIC] = "auto",
		[IEEE80211_SMPS_OFF] = "off",
		[IEEE80211_SMPS_STATIC] = "static",
		[IEEE80211_SMPS_DYNAMIC] = "dynamic",
	};

	printk(KERN_DEBUG "%s:%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
674
	       wiphy_name(hw->wiphy), __func__,
675
	       conf->channel->center_freq,
676
	       hwsim_chantypes[conf->channel_type],
J
Johannes Berg 已提交
677
	       !!(conf->flags & IEEE80211_CONF_IDLE),
678 679
	       !!(conf->flags & IEEE80211_CONF_PS),
	       smps_modes[conf->smps_mode]);
680

681 682
	data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);

683
	data->channel = conf->channel;
684
	if (!data->started || !data->beacon_int)
685 686 687 688 689 690 691 692 693 694
		del_timer(&data->beacon_timer);
	else
		mod_timer(&data->beacon_timer, jiffies + data->beacon_int);

	return 0;
}


static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
					    unsigned int changed_flags,
695
					    unsigned int *total_flags,u64 multicast)
696 697 698 699 700 701 702 703 704 705 706 707 708 709
{
	struct mac80211_hwsim_data *data = hw->priv;

	printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);

	data->rx_filter = 0;
	if (*total_flags & FIF_PROMISC_IN_BSS)
		data->rx_filter |= FIF_PROMISC_IN_BSS;
	if (*total_flags & FIF_ALLMULTI)
		data->rx_filter |= FIF_ALLMULTI;

	*total_flags = data->rx_filter;
}

710 711 712 713 714
static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
					    struct ieee80211_vif *vif,
					    struct ieee80211_bss_conf *info,
					    u32 changed)
{
715
	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
716
	struct mac80211_hwsim_data *data = hw->priv;
717

718
	hwsim_check_magic(vif);
719 720 721 722

	printk(KERN_DEBUG "%s:%s(changed=0x%x)\n",
	       wiphy_name(hw->wiphy), __func__, changed);

723 724 725 726 727 728 729
	if (changed & BSS_CHANGED_BSSID) {
		printk(KERN_DEBUG "%s:%s: BSSID changed: %pM\n",
		       wiphy_name(hw->wiphy), __func__,
		       info->bssid);
		memcpy(vp->bssid, info->bssid, ETH_ALEN);
	}

730 731 732
	if (changed & BSS_CHANGED_ASSOC) {
		printk(KERN_DEBUG "  %s: ASSOC: assoc=%d aid=%d\n",
		       wiphy_name(hw->wiphy), info->assoc, info->aid);
733 734
		vp->assoc = info->assoc;
		vp->aid = info->aid;
735 736
	}

737 738 739 740
	if (changed & BSS_CHANGED_BEACON_INT) {
		printk(KERN_DEBUG "  %s: BCNINT: %d\n",
		       wiphy_name(hw->wiphy), info->beacon_int);
		data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
741
		if (WARN_ON(!data->beacon_int))
742
			data->beacon_int = 1;
743 744 745
		if (data->started)
			mod_timer(&data->beacon_timer,
				  jiffies + data->beacon_int);
746 747
	}

748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763
	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
		printk(KERN_DEBUG "  %s: ERP_CTS_PROT: %d\n",
		       wiphy_name(hw->wiphy), info->use_cts_prot);
	}

	if (changed & BSS_CHANGED_ERP_PREAMBLE) {
		printk(KERN_DEBUG "  %s: ERP_PREAMBLE: %d\n",
		       wiphy_name(hw->wiphy), info->use_short_preamble);
	}

	if (changed & BSS_CHANGED_ERP_SLOT) {
		printk(KERN_DEBUG "  %s: ERP_SLOT: %d\n",
		       wiphy_name(hw->wiphy), info->use_short_slot);
	}

	if (changed & BSS_CHANGED_HT) {
764
		printk(KERN_DEBUG "  %s: HT: op_mode=0x%x, chantype=%s\n",
765
		       wiphy_name(hw->wiphy),
766 767
		       info->ht_operation_mode,
		       hwsim_chantypes[info->channel_type]);
768 769 770 771 772 773 774
	}

	if (changed & BSS_CHANGED_BASIC_RATES) {
		printk(KERN_DEBUG "  %s: BASIC_RATES: 0x%llx\n",
		       wiphy_name(hw->wiphy),
		       (unsigned long long) info->basic_rates);
	}
775 776
}

777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796
static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
				  struct ieee80211_vif *vif,
				  struct ieee80211_sta *sta)
{
	hwsim_check_magic(vif);
	hwsim_set_sta_magic(sta);

	return 0;
}

static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
				     struct ieee80211_vif *vif,
				     struct ieee80211_sta *sta)
{
	hwsim_check_magic(vif);
	hwsim_clear_sta_magic(sta);

	return 0;
}

797 798
static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
				      struct ieee80211_vif *vif,
799 800
				      enum sta_notify_cmd cmd,
				      struct ieee80211_sta *sta)
801 802
{
	hwsim_check_magic(vif);
803

804
	switch (cmd) {
805 806 807 808
	case STA_NOTIFY_SLEEP:
	case STA_NOTIFY_AWAKE:
		/* TODO: make good use of these flags */
		break;
809 810 811
	default:
		WARN(1, "Invalid sta notify: %d\n", cmd);
		break;
812 813 814 815 816 817 818 819 820
	}
}

static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
				  struct ieee80211_sta *sta,
				  bool set)
{
	hwsim_check_sta_magic(sta);
	return 0;
821
}
822

823 824 825 826 827 828 829 830 831 832 833
static int mac80211_hwsim_conf_tx(
	struct ieee80211_hw *hw, u16 queue,
	const struct ieee80211_tx_queue_params *params)
{
	printk(KERN_DEBUG "%s:%s (queue=%d txop=%d cw_min=%d cw_max=%d "
	       "aifs=%d)\n",
	       wiphy_name(hw->wiphy), __func__, queue,
	       params->txop, params->cw_min, params->cw_max, params->aifs);
	return 0;
}

834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860
static int mac80211_hwsim_get_survey(
	struct ieee80211_hw *hw, int idx,
	struct survey_info *survey)
{
	struct ieee80211_conf *conf = &hw->conf;

	printk(KERN_DEBUG "%s:%s (idx=%d)\n",
	       wiphy_name(hw->wiphy), __func__, idx);

	if (idx != 0)
		return -ENOENT;

	/* Current channel */
	survey->channel = conf->channel;

	/*
	 * Magically conjured noise level --- this is only ok for simulated hardware.
	 *
	 * A real driver which cannot determine the real channel noise MUST NOT
	 * report any noise, especially not a magically conjured one :-)
	 */
	survey->filled = SURVEY_INFO_NOISE_DBM;
	survey->noise = -92;

	return 0;
}

861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889
#ifdef CONFIG_NL80211_TESTMODE
/*
 * This section contains example code for using netlink
 * attributes with the testmode command in nl80211.
 */

/* These enums need to be kept in sync with userspace */
enum hwsim_testmode_attr {
	__HWSIM_TM_ATTR_INVALID	= 0,
	HWSIM_TM_ATTR_CMD	= 1,
	HWSIM_TM_ATTR_PS	= 2,

	/* keep last */
	__HWSIM_TM_ATTR_AFTER_LAST,
	HWSIM_TM_ATTR_MAX	= __HWSIM_TM_ATTR_AFTER_LAST - 1
};

enum hwsim_testmode_cmd {
	HWSIM_TM_CMD_SET_PS		= 0,
	HWSIM_TM_CMD_GET_PS		= 1,
};

static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
	[HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
	[HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
};

static int hwsim_fops_ps_write(void *dat, u64 val);

J
Johannes Berg 已提交
890 891
static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
				       void *data, int len)
892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928
{
	struct mac80211_hwsim_data *hwsim = hw->priv;
	struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
	struct sk_buff *skb;
	int err, ps;

	err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
			hwsim_testmode_policy);
	if (err)
		return err;

	if (!tb[HWSIM_TM_ATTR_CMD])
		return -EINVAL;

	switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
	case HWSIM_TM_CMD_SET_PS:
		if (!tb[HWSIM_TM_ATTR_PS])
			return -EINVAL;
		ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
		return hwsim_fops_ps_write(hwsim, ps);
	case HWSIM_TM_CMD_GET_PS:
		skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
						nla_total_size(sizeof(u32)));
		if (!skb)
			return -ENOMEM;
		NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
		return cfg80211_testmode_reply(skb);
	default:
		return -EOPNOTSUPP;
	}

 nla_put_failure:
	kfree_skb(skb);
	return -ENOBUFS;
}
#endif

929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952
static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
				       struct ieee80211_vif *vif,
				       enum ieee80211_ampdu_mlme_action action,
				       struct ieee80211_sta *sta, u16 tid, u16 *ssn)
{
	switch (action) {
	case IEEE80211_AMPDU_TX_START:
		ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
		break;
	case IEEE80211_AMPDU_TX_STOP:
		ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
		break;
	case IEEE80211_AMPDU_TX_OPERATIONAL:
		break;
	case IEEE80211_AMPDU_RX_START:
	case IEEE80211_AMPDU_RX_STOP:
		break;
	default:
		return -EOPNOTSUPP;
	}

	return 0;
}

953 954 955 956 957 958 959 960 961 962
static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
{
	/*
	 * In this special case, there's nothing we need to
	 * do because hwsim does transmission synchronously.
	 * In the future, when it does transmissions via
	 * userspace, we may need to do something.
	 */
}

963 964 965 966
struct hw_scan_done {
	struct delayed_work w;
	struct ieee80211_hw *hw;
};
967

968 969 970 971 972 973 974 975 976 977
static void hw_scan_done(struct work_struct *work)
{
	struct hw_scan_done *hsd =
		container_of(work, struct hw_scan_done, w.work);

	ieee80211_scan_completed(hsd->hw, false);
	kfree(hsd);
}

static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
978
				  struct ieee80211_vif *vif,
979 980 981 982 983 984 985 986 987 988 989
				  struct cfg80211_scan_request *req)
{
	struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
	int i;

	if (!hsd)
		return -ENOMEM;

	hsd->hw = hw;
	INIT_DELAYED_WORK(&hsd->w, hw_scan_done);

990
	printk(KERN_DEBUG "hwsim hw_scan request\n");
991
	for (i = 0; i < req->n_channels; i++)
992
		printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
993 994 995 996 997 998 999
			req->channels[i]->center_freq);

	ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);

	return 0;
}

1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024
static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
{
	struct mac80211_hwsim_data *hwsim = hw->priv;

	mutex_lock(&hwsim->mutex);

	if (hwsim->scanning) {
		printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
		goto out;
	}

	printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
	hwsim->scanning = true;

out:
	mutex_unlock(&hwsim->mutex);
}

static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
{
	struct mac80211_hwsim_data *hwsim = hw->priv;

	mutex_lock(&hwsim->mutex);

	printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1025
	hwsim->scanning = false;
1026 1027 1028 1029

	mutex_unlock(&hwsim->mutex);
}

1030
static struct ieee80211_ops mac80211_hwsim_ops =
1031 1032 1033 1034 1035 1036 1037 1038
{
	.tx = mac80211_hwsim_tx,
	.start = mac80211_hwsim_start,
	.stop = mac80211_hwsim_stop,
	.add_interface = mac80211_hwsim_add_interface,
	.remove_interface = mac80211_hwsim_remove_interface,
	.config = mac80211_hwsim_config,
	.configure_filter = mac80211_hwsim_configure_filter,
1039
	.bss_info_changed = mac80211_hwsim_bss_info_changed,
1040 1041
	.sta_add = mac80211_hwsim_sta_add,
	.sta_remove = mac80211_hwsim_sta_remove,
1042
	.sta_notify = mac80211_hwsim_sta_notify,
1043
	.set_tim = mac80211_hwsim_set_tim,
1044
	.conf_tx = mac80211_hwsim_conf_tx,
1045
	.get_survey = mac80211_hwsim_get_survey,
1046
	CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1047
	.ampdu_action = mac80211_hwsim_ampdu_action,
1048 1049
	.sw_scan_start = mac80211_hwsim_sw_scan,
	.sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1050
	.flush = mac80211_hwsim_flush,
1051 1052 1053 1054 1055
};


static void mac80211_hwsim_free(void)
{
1056
	struct list_head tmplist, *i, *tmp;
1057
	struct mac80211_hwsim_data *data, *tmpdata;
1058 1059 1060 1061 1062 1063 1064 1065

	INIT_LIST_HEAD(&tmplist);

	spin_lock_bh(&hwsim_radio_lock);
	list_for_each_safe(i, tmp, &hwsim_radios)
		list_move(i, &tmplist);
	spin_unlock_bh(&hwsim_radio_lock);

1066
	list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
D
Daniel Wagner 已提交
1067
		debugfs_remove(data->debugfs_group);
1068 1069
		debugfs_remove(data->debugfs_ps);
		debugfs_remove(data->debugfs);
1070 1071 1072
		ieee80211_unregister_hw(data->hw);
		device_unregister(data->dev);
		ieee80211_free_hw(data->hw);
1073 1074 1075 1076 1077 1078 1079 1080 1081
	}
	class_destroy(hwsim_class);
}


static struct device_driver mac80211_hwsim_driver = {
	.name = "mac80211_hwsim"
};

1082 1083 1084 1085 1086 1087
static const struct net_device_ops hwsim_netdev_ops = {
	.ndo_start_xmit 	= hwsim_mon_xmit,
	.ndo_change_mtu		= eth_change_mtu,
	.ndo_set_mac_address 	= eth_mac_addr,
	.ndo_validate_addr	= eth_validate_addr,
};
1088 1089 1090

static void hwsim_mon_setup(struct net_device *dev)
{
1091
	dev->netdev_ops = &hwsim_netdev_ops;
1092 1093 1094 1095 1096 1097 1098 1099 1100
	dev->destructor = free_netdev;
	ether_setup(dev);
	dev->tx_queue_len = 0;
	dev->type = ARPHRD_IEEE80211_RADIOTAP;
	memset(dev->dev_addr, 0, ETH_ALEN);
	dev->dev_addr[0] = 0x12;
}


1101 1102 1103 1104 1105 1106 1107 1108 1109 1110
static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
{
	struct mac80211_hwsim_data *data = dat;
	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
	struct sk_buff *skb;
	struct ieee80211_pspoll *pspoll;

	if (!vp->assoc)
		return;

1111 1112
	printk(KERN_DEBUG "%s:%s: send PS-Poll to %pM for aid %d\n",
	       wiphy_name(data->hw->wiphy), __func__, vp->bssid, vp->aid);
1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123

	skb = dev_alloc_skb(sizeof(*pspoll));
	if (!skb)
		return;
	pspoll = (void *) skb_put(skb, sizeof(*pspoll));
	pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
					    IEEE80211_STYPE_PSPOLL |
					    IEEE80211_FCTL_PM);
	pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
	memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
	memcpy(pspoll->ta, mac, ETH_ALEN);
1124
	if (!mac80211_hwsim_tx_frame(data->hw, skb))
1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139
		printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
	dev_kfree_skb(skb);
}


static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
				struct ieee80211_vif *vif, int ps)
{
	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
	struct sk_buff *skb;
	struct ieee80211_hdr *hdr;

	if (!vp->assoc)
		return;

1140 1141
	printk(KERN_DEBUG "%s:%s: send data::nullfunc to %pM ps=%d\n",
	       wiphy_name(data->hw->wiphy), __func__, vp->bssid, ps);
1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153

	skb = dev_alloc_skb(sizeof(*hdr));
	if (!skb)
		return;
	hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
	hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
					 IEEE80211_STYPE_NULLFUNC |
					 (ps ? IEEE80211_FCTL_PM : 0));
	hdr->duration_id = cpu_to_le16(0);
	memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
	memcpy(hdr->addr2, mac, ETH_ALEN);
	memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1154
	if (!mac80211_hwsim_tx_frame(data->hw, skb))
1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215
		printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
	dev_kfree_skb(skb);
}


static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
				   struct ieee80211_vif *vif)
{
	struct mac80211_hwsim_data *data = dat;
	hwsim_send_nullfunc(data, mac, vif, 1);
}


static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
				      struct ieee80211_vif *vif)
{
	struct mac80211_hwsim_data *data = dat;
	hwsim_send_nullfunc(data, mac, vif, 0);
}


static int hwsim_fops_ps_read(void *dat, u64 *val)
{
	struct mac80211_hwsim_data *data = dat;
	*val = data->ps;
	return 0;
}

static int hwsim_fops_ps_write(void *dat, u64 val)
{
	struct mac80211_hwsim_data *data = dat;
	enum ps_mode old_ps;

	if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
	    val != PS_MANUAL_POLL)
		return -EINVAL;

	old_ps = data->ps;
	data->ps = val;

	if (val == PS_MANUAL_POLL) {
		ieee80211_iterate_active_interfaces(data->hw,
						    hwsim_send_ps_poll, data);
		data->ps_poll_pending = true;
	} else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
		ieee80211_iterate_active_interfaces(data->hw,
						    hwsim_send_nullfunc_ps,
						    data);
	} else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
		ieee80211_iterate_active_interfaces(data->hw,
						    hwsim_send_nullfunc_no_ps,
						    data);
	}

	return 0;
}

DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
			"%llu\n");


D
Daniel Wagner 已提交
1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233
static int hwsim_fops_group_read(void *dat, u64 *val)
{
	struct mac80211_hwsim_data *data = dat;
	*val = data->group;
	return 0;
}

static int hwsim_fops_group_write(void *dat, u64 val)
{
	struct mac80211_hwsim_data *data = dat;
	data->group = val;
	return 0;
}

DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
			hwsim_fops_group_read, hwsim_fops_group_write,
			"%llx\n");

1234 1235 1236 1237 1238 1239
static int __init init_mac80211_hwsim(void)
{
	int i, err = 0;
	u8 addr[ETH_ALEN];
	struct mac80211_hwsim_data *data;
	struct ieee80211_hw *hw;
1240
	enum ieee80211_band band;
1241

1242
	if (radios < 1 || radios > 100)
1243 1244
		return -EINVAL;

1245
	if (fake_hw_scan) {
1246
		mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1247 1248 1249
		mac80211_hwsim_ops.sw_scan_start = NULL;
		mac80211_hwsim_ops.sw_scan_complete = NULL;
	}
1250

1251 1252
	spin_lock_init(&hwsim_radio_lock);
	INIT_LIST_HEAD(&hwsim_radios);
1253 1254

	hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1255
	if (IS_ERR(hwsim_class))
1256 1257 1258 1259 1260
		return PTR_ERR(hwsim_class);

	memset(addr, 0, ETH_ALEN);
	addr[0] = 0x02;

1261
	for (i = 0; i < radios; i++) {
1262 1263 1264
		printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
		       i);
		hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1265
		if (!hw) {
1266 1267 1268 1269 1270 1271
			printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
			       "failed\n");
			err = -ENOMEM;
			goto failed;
		}
		data = hw->priv;
1272 1273
		data->hw = hw;

1274 1275
		data->dev = device_create(hwsim_class, NULL, 0, hw,
					  "hwsim%d", i);
1276
		if (IS_ERR(data->dev)) {
1277
			printk(KERN_DEBUG
1278
			       "mac80211_hwsim: device_create "
1279 1280
			       "failed (%ld)\n", PTR_ERR(data->dev));
			err = -ENOMEM;
1281
			goto failed_drvdata;
1282 1283 1284 1285 1286 1287
		}
		data->dev->driver = &mac80211_hwsim_driver;

		SET_IEEE80211_DEV(hw, data->dev);
		addr[3] = i >> 8;
		addr[4] = i;
1288 1289 1290 1291 1292
		memcpy(data->addresses[0].addr, addr, ETH_ALEN);
		memcpy(data->addresses[1].addr, addr, ETH_ALEN);
		data->addresses[1].addr[0] |= 0x40;
		hw->wiphy->n_addresses = 2;
		hw->wiphy->addresses = data->addresses;
1293 1294

		hw->channel_change_time = 1;
1295
		hw->queues = 4;
1296 1297
		hw->wiphy->interface_modes =
			BIT(NL80211_IFTYPE_STATION) |
1298 1299
			BIT(NL80211_IFTYPE_AP) |
			BIT(NL80211_IFTYPE_MESH_POINT);
1300

1301
		hw->flags = IEEE80211_HW_MFP_CAPABLE |
1302 1303
			    IEEE80211_HW_SIGNAL_DBM |
			    IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1304 1305
			    IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
			    IEEE80211_HW_AMPDU_AGGREGATION;
1306

1307 1308
		/* ask mac80211 to reserve space for magic */
		hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1309
		hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1310

1311 1312 1313 1314
		memcpy(data->channels_2ghz, hwsim_channels_2ghz,
			sizeof(hwsim_channels_2ghz));
		memcpy(data->channels_5ghz, hwsim_channels_5ghz,
			sizeof(hwsim_channels_5ghz));
1315
		memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1316 1317 1318 1319 1320 1321 1322 1323

		for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
			struct ieee80211_supported_band *sband = &data->bands[band];
			switch (band) {
			case IEEE80211_BAND_2GHZ:
				sband->channels = data->channels_2ghz;
				sband->n_channels =
					ARRAY_SIZE(hwsim_channels_2ghz);
1324 1325
				sband->bitrates = data->rates;
				sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1326 1327 1328 1329 1330
				break;
			case IEEE80211_BAND_5GHZ:
				sband->channels = data->channels_5ghz;
				sband->n_channels =
					ARRAY_SIZE(hwsim_channels_5ghz);
1331 1332
				sband->bitrates = data->rates + 4;
				sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352
				break;
			default:
				break;
			}

			sband->ht_cap.ht_supported = true;
			sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
				IEEE80211_HT_CAP_GRN_FLD |
				IEEE80211_HT_CAP_SGI_40 |
				IEEE80211_HT_CAP_DSSSCCK40;
			sband->ht_cap.ampdu_factor = 0x3;
			sband->ht_cap.ampdu_density = 0x6;
			memset(&sband->ht_cap.mcs, 0,
			       sizeof(sband->ht_cap.mcs));
			sband->ht_cap.mcs.rx_mask[0] = 0xff;
			sband->ht_cap.mcs.rx_mask[1] = 0xff;
			sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;

			hw->wiphy->bands[band] = sband;
		}
D
Daniel Wagner 已提交
1353 1354
		/* By default all radios are belonging to the first group */
		data->group = 1;
1355
		mutex_init(&data->mutex);
1356

1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369
		/* Work to be done prior to ieee80211_register_hw() */
		switch (regtest) {
		case HWSIM_REGTEST_DISABLED:
		case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
		case HWSIM_REGTEST_DRIVER_REG_ALL:
		case HWSIM_REGTEST_DIFF_COUNTRY:
			/*
			 * Nothing to be done for driver regulatory domain
			 * hints prior to ieee80211_register_hw()
			 */
			break;
		case HWSIM_REGTEST_WORLD_ROAM:
			if (i == 0) {
J
Johannes Berg 已提交
1370
				hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1371 1372 1373 1374 1375
				wiphy_apply_custom_regulatory(hw->wiphy,
					&hwsim_world_regdom_custom_01);
			}
			break;
		case HWSIM_REGTEST_CUSTOM_WORLD:
J
Johannes Berg 已提交
1376
			hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1377 1378 1379 1380 1381
			wiphy_apply_custom_regulatory(hw->wiphy,
				&hwsim_world_regdom_custom_01);
			break;
		case HWSIM_REGTEST_CUSTOM_WORLD_2:
			if (i == 0) {
J
Johannes Berg 已提交
1382
				hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1383 1384 1385
				wiphy_apply_custom_regulatory(hw->wiphy,
					&hwsim_world_regdom_custom_01);
			} else if (i == 1) {
J
Johannes Berg 已提交
1386
				hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1387 1388 1389 1390 1391
				wiphy_apply_custom_regulatory(hw->wiphy,
					&hwsim_world_regdom_custom_02);
			}
			break;
		case HWSIM_REGTEST_STRICT_ALL:
J
Johannes Berg 已提交
1392
			hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1393 1394 1395 1396
			break;
		case HWSIM_REGTEST_STRICT_FOLLOW:
		case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
			if (i == 0)
J
Johannes Berg 已提交
1397
				hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1398 1399 1400
			break;
		case HWSIM_REGTEST_ALL:
			if (i == 0) {
J
Johannes Berg 已提交
1401
				hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1402 1403 1404
				wiphy_apply_custom_regulatory(hw->wiphy,
					&hwsim_world_regdom_custom_01);
			} else if (i == 1) {
J
Johannes Berg 已提交
1405
				hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1406 1407 1408
				wiphy_apply_custom_regulatory(hw->wiphy,
					&hwsim_world_regdom_custom_02);
			} else if (i == 4)
J
Johannes Berg 已提交
1409
				hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1410 1411 1412 1413 1414
			break;
		default:
			break;
		}

1415 1416 1417
		/* give the regulatory workqueue a chance to run */
		if (regtest)
			schedule_timeout_interruptible(1);
1418 1419 1420 1421
		err = ieee80211_register_hw(hw);
		if (err < 0) {
			printk(KERN_DEBUG "mac80211_hwsim: "
			       "ieee80211_register_hw failed (%d)\n", err);
1422
			goto failed_hw;
1423 1424
		}

1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470
		/* Work to be done after to ieee80211_register_hw() */
		switch (regtest) {
		case HWSIM_REGTEST_WORLD_ROAM:
		case HWSIM_REGTEST_DISABLED:
			break;
		case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
			if (!i)
				regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
			break;
		case HWSIM_REGTEST_DRIVER_REG_ALL:
		case HWSIM_REGTEST_STRICT_ALL:
			regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
			break;
		case HWSIM_REGTEST_DIFF_COUNTRY:
			if (i < ARRAY_SIZE(hwsim_alpha2s))
				regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
			break;
		case HWSIM_REGTEST_CUSTOM_WORLD:
		case HWSIM_REGTEST_CUSTOM_WORLD_2:
			/*
			 * Nothing to be done for custom world regulatory
			 * domains after to ieee80211_register_hw
			 */
			break;
		case HWSIM_REGTEST_STRICT_FOLLOW:
			if (i == 0)
				regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
			break;
		case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
			if (i == 0)
				regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
			else if (i == 1)
				regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
			break;
		case HWSIM_REGTEST_ALL:
			if (i == 2)
				regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
			else if (i == 3)
				regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
			else if (i == 4)
				regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
			break;
		default:
			break;
		}

J
Johannes Berg 已提交
1471
		printk(KERN_DEBUG "%s: hwaddr %pM registered\n",
1472
		       wiphy_name(hw->wiphy),
J
Johannes Berg 已提交
1473
		       hw->wiphy->perm_addr);
1474

1475 1476 1477 1478 1479
		data->debugfs = debugfs_create_dir("hwsim",
						   hw->wiphy->debugfsdir);
		data->debugfs_ps = debugfs_create_file("ps", 0666,
						       data->debugfs, data,
						       &hwsim_fops_ps);
D
Daniel Wagner 已提交
1480 1481 1482
		data->debugfs_group = debugfs_create_file("group", 0666,
							data->debugfs, data,
							&hwsim_fops_group);
1483

1484 1485
		setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
			    (unsigned long) hw);
1486 1487

		list_add_tail(&data->list, &hwsim_radios);
1488 1489 1490 1491 1492 1493 1494 1495 1496
	}

	hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
	if (hwsim_mon == NULL)
		goto failed;

	rtnl_lock();

	err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1497
	if (err < 0)
1498
		goto failed_mon;
1499

1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511

	err = register_netdevice(hwsim_mon);
	if (err < 0)
		goto failed_mon;

	rtnl_unlock();

	return 0;

failed_mon:
	rtnl_unlock();
	free_netdev(hwsim_mon);
1512 1513
	mac80211_hwsim_free();
	return err;
1514

1515 1516 1517 1518
failed_hw:
	device_unregister(data->dev);
failed_drvdata:
	ieee80211_free_hw(hw);
1519 1520 1521 1522 1523 1524 1525 1526
failed:
	mac80211_hwsim_free();
	return err;
}


static void __exit exit_mac80211_hwsim(void)
{
1527
	printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1528 1529

	mac80211_hwsim_free();
1530
	unregister_netdev(hwsim_mon);
1531 1532 1533 1534 1535
}


module_init(init_mac80211_hwsim);
module_exit(exit_mac80211_hwsim);