mac80211_hwsim.c 102.9 KB
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/*
 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
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 * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
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Ilan Peer 已提交
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 * Copyright (c) 2016 - 2017 Intel Deutschland GmbH
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 *
 * 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:
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 * - Add TSF sync and fix IBSS beacon transmission by adding
 *   competition for "air time" at TBTT
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 * - 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/platform_device.h>
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#include <linux/debugfs.h>
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#include <linux/module.h>
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#include <linux/ktime.h>
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#include <net/genetlink.h>
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#include <net/net_namespace.h>
#include <net/netns/generic.h>
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#include <linux/rhashtable.h>
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#include <linux/nospec.h>
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#include "mac80211_hwsim.h"

#define WARN_QUEUE 100
#define MAX_QUEUE 200
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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 int channels = 1;
module_param(channels, int, 0444);
MODULE_PARM_DESC(channels, "Number of concurrent channels");
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static bool paged_rx = false;
module_param(paged_rx, bool, 0644);
MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");

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static bool rctbl = false;
module_param(rctbl, bool, 0444);
MODULE_PARM_DESC(rctbl, "Handle rate control table");

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static bool support_p2p_device = true;
module_param(support_p2p_device, bool, 0444);
MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");

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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.
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 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
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 *	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,
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			 NL80211_RRF_NO_IR),
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	}
};

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static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
	&hwsim_world_regdom_custom_01,
	&hwsim_world_regdom_custom_02,
};

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struct hwsim_vif_priv {
	u32 magic;
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	u8 bssid[ETH_ALEN];
	bool assoc;
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	bool bcn_en;
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	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;
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	WARN(vp->magic != HWSIM_VIF_MAGIC,
	     "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
	     vif, vp->magic, vif->addr, vif->type, vif->p2p);
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}

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;
};

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#define HWSIM_STA_MAGIC	0x6d537749
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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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struct hwsim_chanctx_priv {
	u32 magic;
};

#define HWSIM_CHANCTX_MAGIC 0x6d53774a

static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
{
	struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
	WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
}

static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
{
	struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
	cp->magic = HWSIM_CHANCTX_MAGIC;
}

static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
{
	struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
	cp->magic = 0;
}

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static unsigned int hwsim_net_id;
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static DEFINE_IDA(hwsim_netgroup_ida);
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struct hwsim_net {
	int netgroup;
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	u32 wmediumd;
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};

static inline int hwsim_net_get_netgroup(struct net *net)
{
	struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);

	return hwsim_net->netgroup;
}

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static inline int hwsim_net_set_netgroup(struct net *net)
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{
	struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);

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	hwsim_net->netgroup = ida_simple_get(&hwsim_netgroup_ida,
					     0, 0, GFP_KERNEL);
	return hwsim_net->netgroup >= 0 ? 0 : -ENOMEM;
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}

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static inline u32 hwsim_net_get_wmediumd(struct net *net)
{
	struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);

	return hwsim_net->wmediumd;
}

static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
{
	struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);

	hwsim_net->wmediumd = portid;
}

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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)  { \
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	.band = NL80211_BAND_2GHZ, \
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	.center_freq = (_freq), \
	.hw_value = (_freq), \
	.max_power = 20, \
}

#define CHAN5G(_freq) { \
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	.band = NL80211_BAND_5GHZ, \
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	.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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	CHAN5G(5845), /* Channel 169 */
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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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#define OUI_QCA 0x001374
#define QCA_NL80211_SUBCMD_TEST 1
enum qca_nl80211_vendor_subcmds {
	QCA_WLAN_VENDOR_ATTR_TEST = 8,
	QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
};

static const struct nla_policy
hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
	[QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
};

static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
					  struct wireless_dev *wdev,
					  const void *data, int data_len)
{
	struct sk_buff *skb;
	struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
	int err;
	u32 val;

	err = nla_parse(tb, QCA_WLAN_VENDOR_ATTR_MAX, data, data_len,
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			hwsim_vendor_test_policy, NULL);
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	if (err)
		return err;
	if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
		return -EINVAL;
	val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
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	wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);
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	/* Send a vendor event as a test. Note that this would not normally be
	 * done within a command handler, but rather, based on some other
	 * trigger. For simplicity, this command is used to trigger the event
	 * here.
	 *
	 * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
	 */
	skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
	if (skb) {
		/* skb_put() or nla_put() will fill up data within
		 * NL80211_ATTR_VENDOR_DATA.
		 */

		/* Add vendor data */
		nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);

		/* Send the event - this will call nla_nest_end() */
		cfg80211_vendor_event(skb, GFP_KERNEL);
	}

	/* Send a response to the command */
	skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
	if (!skb)
		return -ENOMEM;

	/* skb_put() or nla_put() will fill up data within
	 * NL80211_ATTR_VENDOR_DATA
	 */
	nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);

	return cfg80211_vendor_cmd_reply(skb);
}

static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
	{
		.info = { .vendor_id = OUI_QCA,
			  .subcmd = QCA_NL80211_SUBCMD_TEST },
		.flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
		.doit = mac80211_hwsim_vendor_cmd_test,
	}
};

/* Advertise support vendor specific events */
static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
	{ .vendor_id = OUI_QCA, .subcmd = 1 },
};

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static const struct ieee80211_iface_limit hwsim_if_limits[] = {
	{ .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
	{ .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
				 BIT(NL80211_IFTYPE_P2P_CLIENT) |
#ifdef CONFIG_MAC80211_MESH
				 BIT(NL80211_IFTYPE_MESH_POINT) |
#endif
				 BIT(NL80211_IFTYPE_AP) |
				 BIT(NL80211_IFTYPE_P2P_GO) },
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	/* must be last, see hwsim_if_comb */
	{ .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
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};

static const struct ieee80211_iface_combination hwsim_if_comb[] = {
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	{
		.limits = hwsim_if_limits,
		/* remove the last entry which is P2P_DEVICE */
		.n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
		.max_interfaces = 2048,
		.num_different_channels = 1,
		.radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
				       BIT(NL80211_CHAN_WIDTH_20) |
				       BIT(NL80211_CHAN_WIDTH_40) |
				       BIT(NL80211_CHAN_WIDTH_80) |
				       BIT(NL80211_CHAN_WIDTH_160),
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	},
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};

static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
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	{
		.limits = hwsim_if_limits,
		.n_limits = ARRAY_SIZE(hwsim_if_limits),
		.max_interfaces = 2048,
		.num_different_channels = 1,
		.radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
				       BIT(NL80211_CHAN_WIDTH_20) |
				       BIT(NL80211_CHAN_WIDTH_40) |
				       BIT(NL80211_CHAN_WIDTH_80) |
				       BIT(NL80211_CHAN_WIDTH_160),
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	},
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};

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static spinlock_t hwsim_radio_lock;
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static LIST_HEAD(hwsim_radios);
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static struct workqueue_struct *hwsim_wq;
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static struct rhashtable hwsim_radios_rht;
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static int hwsim_radio_idx;
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static int hwsim_radios_generation = 1;
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static struct platform_driver mac80211_hwsim_driver = {
	.driver = {
		.name = "mac80211_hwsim",
	},
};
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struct mac80211_hwsim_data {
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	struct list_head list;
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	struct rhash_head rht;
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	struct ieee80211_hw *hw;
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	struct device *dev;
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	struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
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	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 ieee80211_iface_combination if_combination;
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	struct mac_address addresses[2];
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	int channels, idx;
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	bool use_chanctx;
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	bool destroy_on_close;
	u32 portid;
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	char alpha2[2];
	const struct ieee80211_regdomain *regd;
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	struct ieee80211_channel *tmp_chan;
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	struct ieee80211_channel *roc_chan;
	u32 roc_duration;
	struct delayed_work roc_start;
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	struct delayed_work roc_done;
	struct delayed_work hw_scan;
	struct cfg80211_scan_request *hw_scan_request;
	struct ieee80211_vif *hw_scan_vif;
	int scan_chan_idx;
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	u8 scan_addr[ETH_ALEN];
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	struct {
		struct ieee80211_channel *channel;
		unsigned long next_start, start, end;
	} survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
		      ARRAY_SIZE(hwsim_channels_5ghz)];
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	struct ieee80211_channel *channel;
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	u64 beacon_int	/* beacon interval in us */;
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	unsigned int rx_filter;
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	bool started, idle, scanning;
	struct mutex mutex;
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	struct tasklet_hrtimer 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;
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	uintptr_t pending_cookie;
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	struct sk_buff_head pending;	/* packets pending */
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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
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	 * radio can be in more than one group.
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	 */
	u64 group;
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	/* group shared by radios created in the same netns */
	int netgroup;
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	/* wmediumd portid responsible for netgroup of this radio */
	u32 wmediumd;
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	/* difference between this hw's clock and the real clock, in usecs */
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	s64 tsf_offset;
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	s64 bcn_delta;
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	/* absolute beacon transmission time. Used to cover up "tx" delay. */
	u64 abs_bcn_ts;
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	/* Stats */
	u64 tx_pkts;
	u64 rx_pkts;
	u64 tx_bytes;
	u64 rx_bytes;
	u64 tx_dropped;
	u64 tx_failed;
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};

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static const struct rhashtable_params hwsim_rht_params = {
	.nelem_hint = 2,
	.automatic_shrinking = true,
	.key_len = ETH_ALEN,
	.key_offset = offsetof(struct mac80211_hwsim_data, addresses[1]),
	.head_offset = offsetof(struct mac80211_hwsim_data, rht),
};
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struct hwsim_radiotap_hdr {
	struct ieee80211_radiotap_header hdr;
594
	__le64 rt_tsft;
595 596 597 598
	u8 rt_flags;
	u8 rt_rate;
	__le16 rt_channel;
	__le16 rt_chbitmask;
599
} __packed;
600

601 602 603 604 605 606 607 608
struct hwsim_radiotap_ack_hdr {
	struct ieee80211_radiotap_header hdr;
	u8 rt_flags;
	u8 pad;
	__le16 rt_channel;
	__le16 rt_chbitmask;
} __packed;

609 610
/* MAC80211_HWSIM netlink family */
static struct genl_family hwsim_genl_family;
611

612 613 614 615 616 617 618 619
enum hwsim_multicast_groups {
	HWSIM_MCGRP_CONFIG,
};

static const struct genl_multicast_group hwsim_mcgrps[] = {
	[HWSIM_MCGRP_CONFIG] = { .name = "config", },
};

620 621
/* MAC80211_HWSIM netlink policy */

622
static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
623 624
	[HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
	[HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
625 626 627 628 629 630
	[HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
			       .len = IEEE80211_MAX_DATA_LEN },
	[HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
	[HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
	[HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
	[HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
631 632
				 .len = IEEE80211_TX_MAX_RATES *
					sizeof(struct hwsim_tx_rate)},
633
	[HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
634 635
	[HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
	[HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
636 637 638
	[HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
	[HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
	[HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
639
	[HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
640
	[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
641 642 643
	[HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
	[HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
	[HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
644
	[HWSIM_ATTR_PERM_ADDR] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
645
};
646

647 648 649 650 651 652 653 654 655 656 657 658 659 660 661
static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
				    struct sk_buff *skb,
				    struct ieee80211_channel *chan);

/* sysfs attributes */
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;

662 663 664
	wiphy_dbg(data->hw->wiphy,
		  "%s: send PS-Poll to %pM for aid %d\n",
		  __func__, vp->bssid, vp->aid);
665 666 667 668

	skb = dev_alloc_skb(sizeof(*pspoll));
	if (!skb)
		return;
669
	pspoll = skb_put(skb, sizeof(*pspoll));
670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692
	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);

	rcu_read_lock();
	mac80211_hwsim_tx_frame(data->hw, skb,
				rcu_dereference(vif->chanctx_conf)->def.chan);
	rcu_read_unlock();
}

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;

693 694 695
	wiphy_dbg(data->hw->wiphy,
		  "%s: send data::nullfunc to %pM ps=%d\n",
		  __func__, vp->bssid, ps);
696 697 698 699

	skb = dev_alloc_skb(sizeof(*hdr));
	if (!skb)
		return;
700
	hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
701 702
	hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
					 IEEE80211_STYPE_NULLFUNC |
703
					 IEEE80211_FCTL_TODS |
704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747
					 (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);

	rcu_read_lock();
	mac80211_hwsim_tx_frame(data->hw, skb,
				rcu_dereference(vif->chanctx_conf)->def.chan);
	rcu_read_unlock();
}


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;

	if (val == PS_MANUAL_POLL) {
748 749 750
		if (data->ps != PS_ENABLED)
			return -EINVAL;
		local_bh_disable();
751 752 753
		ieee80211_iterate_active_interfaces_atomic(
			data->hw, IEEE80211_IFACE_ITER_NORMAL,
			hwsim_send_ps_poll, data);
754 755 756 757 758 759 760 761
		local_bh_enable();
		return 0;
	}
	old_ps = data->ps;
	data->ps = val;

	local_bh_disable();
	if (old_ps == PS_DISABLED && val != PS_DISABLED) {
762 763 764
		ieee80211_iterate_active_interfaces_atomic(
			data->hw, IEEE80211_IFACE_ITER_NORMAL,
			hwsim_send_nullfunc_ps, data);
765
	} else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
766 767 768
		ieee80211_iterate_active_interfaces_atomic(
			data->hw, IEEE80211_IFACE_ITER_NORMAL,
			hwsim_send_nullfunc_no_ps, data);
769
	}
770
	local_bh_enable();
771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807

	return 0;
}

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

static int hwsim_write_simulate_radar(void *dat, u64 val)
{
	struct mac80211_hwsim_data *data = dat;

	ieee80211_radar_detected(data->hw);

	return 0;
}

DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
			hwsim_write_simulate_radar, "%llu\n");

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");

808 809
static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
					struct net_device *dev)
810 811 812
{
	/* TODO: allow packet injection */
	dev_kfree_skb(skb);
813
	return NETDEV_TX_OK;
814 815
}

816 817 818 819 820
static inline u64 mac80211_hwsim_get_tsf_raw(void)
{
	return ktime_to_us(ktime_get_real());
}

821 822
static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
{
823
	u64 now = mac80211_hwsim_get_tsf_raw();
824 825
	return cpu_to_le64(now + data->tsf_offset);
}
826

827
static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
828
				  struct ieee80211_vif *vif)
829 830 831 832 833 834 835 836 837
{
	struct mac80211_hwsim_data *data = hw->priv;
	return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
}

static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
		struct ieee80211_vif *vif, u64 tsf)
{
	struct mac80211_hwsim_data *data = hw->priv;
838
	u64 now = mac80211_hwsim_get_tsf(hw, vif);
839
	u32 bcn_int = data->beacon_int;
A
Andrew Morton 已提交
840
	u64 delta = abs(tsf - now);
841

842
	/* adjust after beaconing with new timestamp at old TBTT */
843 844 845 846 847
	if (tsf > now) {
		data->tsf_offset += delta;
		data->bcn_delta = do_div(delta, bcn_int);
	} else {
		data->tsf_offset -= delta;
848
		data->bcn_delta = -(s64)do_div(delta, bcn_int);
849
	}
850 851
}

852
static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
853 854
				      struct sk_buff *tx_skb,
				      struct ieee80211_channel *chan)
855 856 857 858 859 860 861 862
{
	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);

863 864 865
	if (WARN_ON(!txrate))
		return;

866 867 868 869 870 871 872
	if (!netif_running(hwsim_mon))
		return;

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

873
	hdr = skb_push(skb, sizeof(*hdr));
874 875 876
	hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
	hdr->hdr.it_pad = 0;
	hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
J
Jouni Malinen 已提交
877 878
	hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
					  (1 << IEEE80211_RADIOTAP_RATE) |
879
					  (1 << IEEE80211_RADIOTAP_TSFT) |
J
Jouni Malinen 已提交
880
					  (1 << IEEE80211_RADIOTAP_CHANNEL));
881
	hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
882 883
	hdr->rt_flags = 0;
	hdr->rt_rate = txrate->bitrate / 5;
884
	hdr->rt_channel = cpu_to_le16(chan->center_freq);
885 886 887 888 889 890 891 892
	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;
893
	skb_reset_mac_header(skb);
894 895
	skb->ip_summed = CHECKSUM_UNNECESSARY;
	skb->pkt_type = PACKET_OTHERHOST;
J
Jouni Malinen 已提交
896
	skb->protocol = htons(ETH_P_802_2);
897 898 899 900 901
	memset(skb->cb, 0, sizeof(skb->cb));
	netif_rx(skb);
}


902 903
static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
				       const u8 *addr)
904 905
{
	struct sk_buff *skb;
906
	struct hwsim_radiotap_ack_hdr *hdr;
907 908 909 910 911 912 913 914 915 916
	u16 flags;
	struct ieee80211_hdr *hdr11;

	if (!netif_running(hwsim_mon))
		return;

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

917
	hdr = skb_put(skb, sizeof(*hdr));
918 919 920 921 922 923
	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;
924
	hdr->pad = 0;
925
	hdr->rt_channel = cpu_to_le16(chan->center_freq);
926 927 928
	flags = IEEE80211_CHAN_2GHZ;
	hdr->rt_chbitmask = cpu_to_le16(flags);

929
	hdr11 = skb_put(skb, 10);
930 931 932 933 934 935
	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;
936
	skb_reset_mac_header(skb);
937 938 939 940 941 942 943
	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);
}

944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964
struct mac80211_hwsim_addr_match_data {
	u8 addr[ETH_ALEN];
	bool ret;
};

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 = {
		.ret = false,
	};

965 966 967
	if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
		return true;

968 969 970 971 972 973 974 975 976
	memcpy(md.addr, addr, ETH_ALEN);

	ieee80211_iterate_active_interfaces_atomic(data->hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   mac80211_hwsim_addr_iter,
						   &md);

	return md.ret;
}
977

978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993
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 &&
994
		    mac80211_hwsim_addr_match(data, skb->data + 4)) {
995 996 997 998 999 1000 1001 1002 1003
			data->ps_poll_pending = false;
			return true;
		}
		return false;
	}

	return true;
}

1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026
static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
				  struct sk_buff *skb, int portid)
{
	struct net *net;
	bool found = false;
	int res = -ENOENT;

	rcu_read_lock();
	for_each_net_rcu(net) {
		if (data->netgroup == hwsim_net_get_netgroup(net)) {
			res = genlmsg_unicast(net, skb, portid);
			found = true;
			break;
		}
	}
	rcu_read_unlock();

	if (!found)
		nlmsg_free(skb);

	return res;
}

1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056
static inline u16 trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate *rate)
{
	u16 result = 0;

	if (rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
		result |= MAC80211_HWSIM_TX_RC_USE_RTS_CTS;
	if (rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
		result |= MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT;
	if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
		result |= MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE;
	if (rate->flags & IEEE80211_TX_RC_MCS)
		result |= MAC80211_HWSIM_TX_RC_MCS;
	if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
		result |= MAC80211_HWSIM_TX_RC_GREEN_FIELD;
	if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
		result |= MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH;
	if (rate->flags & IEEE80211_TX_RC_DUP_DATA)
		result |= MAC80211_HWSIM_TX_RC_DUP_DATA;
	if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
		result |= MAC80211_HWSIM_TX_RC_SHORT_GI;
	if (rate->flags & IEEE80211_TX_RC_VHT_MCS)
		result |= MAC80211_HWSIM_TX_RC_VHT_MCS;
	if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
		result |= MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH;
	if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
		result |= MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH;

	return result;
}

1057 1058
static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
				       struct sk_buff *my_skb,
1059
				       int dst_portid)
1060 1061 1062 1063 1064 1065 1066 1067 1068
{
	struct sk_buff *skb;
	struct mac80211_hwsim_data *data = hw->priv;
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
	void *msg_head;
	unsigned int hwsim_flags = 0;
	int i;
	struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1069
	struct hwsim_tx_rate_flag tx_attempts_flags[IEEE80211_TX_MAX_RATES];
1070
	uintptr_t cookie;
1071 1072 1073 1074 1075 1076

	if (data->ps != PS_DISABLED)
		hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
	/* If the queue contains MAX_QUEUE skb's drop some */
	if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
		/* Droping until WARN_QUEUE level */
1077
		while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1078
			ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1079 1080
			data->tx_dropped++;
		}
1081 1082
	}

1083
	skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1084 1085 1086 1087 1088 1089
	if (skb == NULL)
		goto nla_put_failure;

	msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
			       HWSIM_CMD_FRAME);
	if (msg_head == NULL) {
1090
		pr_debug("mac80211_hwsim: problem with msg_head\n");
1091 1092 1093
		goto nla_put_failure;
	}

1094 1095
	if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
		    ETH_ALEN, data->addresses[1].addr))
1096
		goto nla_put_failure;
1097

1098
	/* We get the skb->data */
1099 1100
	if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
		goto nla_put_failure;
1101 1102 1103 1104 1105 1106 1107 1108 1109 1110

	/* We get the flags for this transmission, and we translate them to
	   wmediumd flags  */

	if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
		hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;

	if (info->flags & IEEE80211_TX_CTL_NO_ACK)
		hwsim_flags |= HWSIM_TX_CTL_NO_ACK;

1111 1112
	if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
		goto nla_put_failure;
1113

1114 1115 1116
	if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
		goto nla_put_failure;

1117 1118 1119 1120
	/* We get the tx control (rate and retries) info*/

	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
		tx_attempts[i].idx = info->status.rates[i].idx;
1121
		tx_attempts_flags[i].idx = info->status.rates[i].idx;
1122
		tx_attempts[i].count = info->status.rates[i].count;
1123 1124 1125
		tx_attempts_flags[i].flags =
				trans_tx_rate_flags_ieee2hwsim(
						&info->status.rates[i]);
1126 1127
	}

1128 1129 1130 1131
	if (nla_put(skb, HWSIM_ATTR_TX_INFO,
		    sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
		    tx_attempts))
		goto nla_put_failure;
1132

1133 1134 1135 1136 1137
	if (nla_put(skb, HWSIM_ATTR_TX_INFO_FLAGS,
		    sizeof(struct hwsim_tx_rate_flag) * IEEE80211_TX_MAX_RATES,
		    tx_attempts_flags))
		goto nla_put_failure;

1138
	/* We create a cookie to identify this skb */
1139 1140 1141
	data->pending_cookie++;
	cookie = data->pending_cookie;
	info->rate_driver_data[0] = (void *)cookie;
1142
	if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1143
		goto nla_put_failure;
1144 1145

	genlmsg_end(skb, msg_head);
1146
	if (hwsim_unicast_netgroup(data, skb, dst_portid))
1147
		goto err_free_txskb;
1148 1149 1150

	/* Enqueue the packet */
	skb_queue_tail(&data->pending, my_skb);
1151 1152
	data->tx_pkts++;
	data->tx_bytes += my_skb->len;
1153 1154 1155
	return;

nla_put_failure:
1156 1157
	nlmsg_free(skb);
err_free_txskb:
1158
	pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
1159
	ieee80211_free_txskb(hw, my_skb);
1160
	data->tx_failed++;
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
static bool hwsim_chans_compat(struct ieee80211_channel *c1,
			       struct ieee80211_channel *c2)
{
	if (!c1 || !c2)
		return false;

	return c1->center_freq == c2->center_freq;
}

struct tx_iter_data {
	struct ieee80211_channel *channel;
	bool receive;
};

static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
				   struct ieee80211_vif *vif)
{
	struct tx_iter_data *data = _data;

	if (!vif->chanctx_conf)
		return;

	if (!hwsim_chans_compat(data->channel,
1186
				rcu_dereference(vif->chanctx_conf)->def.chan))
1187 1188 1189 1190 1191
		return;

	data->receive = true;
}

1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210
static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
{
	/*
	 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
	 * e.g. like this:
	 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
	 * (but you should use a valid OUI, not that)
	 *
	 * If anyone wants to 'donate' a radiotap OUI/subns code
	 * please send a patch removing this #ifdef and changing
	 * the values accordingly.
	 */
#ifdef HWSIM_RADIOTAP_OUI
	struct ieee80211_vendor_radiotap *rtap;

	/*
	 * Note that this code requires the headroom in the SKB
	 * that was allocated earlier.
	 */
1211
	rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238
	rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
	rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
	rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
	rtap->subns = 127;

	/*
	 * Radiotap vendor namespaces can (and should) also be
	 * split into fields by using the standard radiotap
	 * presence bitmap mechanism. Use just BIT(0) here for
	 * the presence bitmap.
	 */
	rtap->present = BIT(0);
	/* We have 8 bytes of (dummy) data */
	rtap->len = 8;
	/* For testing, also require it to be aligned */
	rtap->align = 8;
	/* And also test that padding works, 4 bytes */
	rtap->pad = 4;
	/* push the data */
	memcpy(rtap->data, "ABCDEFGH", 8);
	/* make sure to clear padding, mac80211 doesn't */
	memset(rtap->data + 8, 0, 4);

	IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
#endif
}

1239
static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1240 1241
					  struct sk_buff *skb,
					  struct ieee80211_channel *chan)
1242
{
1243 1244
	struct mac80211_hwsim_data *data = hw->priv, *data2;
	bool ack = false;
1245
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1246
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1247
	struct ieee80211_rx_status rx_status;
1248
	u64 now;
1249 1250

	memset(&rx_status, 0, sizeof(rx_status));
1251
	rx_status.flag |= RX_FLAG_MACTIME_START;
1252 1253
	rx_status.freq = chan->center_freq;
	rx_status.band = chan->band;
1254 1255 1256
	if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
		rx_status.rate_idx =
			ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1257
		rx_status.nss =
1258
			ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1259
		rx_status.encoding = RX_ENC_VHT;
1260 1261 1262
	} else {
		rx_status.rate_idx = info->control.rates[0].idx;
		if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1263
			rx_status.encoding = RX_ENC_HT;
1264
	}
1265
	if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1266 1267 1268 1269 1270 1271 1272
		rx_status.bw = RATE_INFO_BW_40;
	else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
		rx_status.bw = RATE_INFO_BW_80;
	else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
		rx_status.bw = RATE_INFO_BW_160;
	else
		rx_status.bw = RATE_INFO_BW_20;
1273
	if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1274
		rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1275
	/* TODO: simulate real signal strength (and optional packet loss) */
1276 1277 1278
	rx_status.signal = -50;
	if (info->control.vif)
		rx_status.signal += info->control.vif->bss_conf.txpower;
1279

1280 1281 1282
	if (data->ps != PS_DISABLED)
		hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);

1283 1284
	/* release the skb's source info */
	skb_orphan(skb);
1285
	skb_dst_drop(skb);
1286 1287 1288 1289
	skb->mark = 0;
	secpath_reset(skb);
	nf_reset(skb);

1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302
	/*
	 * Get absolute mactime here so all HWs RX at the "same time", and
	 * absolute TX time for beacon mactime so the timestamp matches.
	 * Giving beacons a different mactime than non-beacons looks messy, but
	 * it helps the Toffset be exact and a ~10us mactime discrepancy
	 * probably doesn't really matter.
	 */
	if (ieee80211_is_beacon(hdr->frame_control) ||
	    ieee80211_is_probe_resp(hdr->frame_control))
		now = data->abs_bcn_ts;
	else
		now = mac80211_hwsim_get_tsf_raw();

1303
	/* Copy skb to all enabled radios that are on the current frequency */
1304 1305
	spin_lock(&hwsim_radio_lock);
	list_for_each_entry(data2, &hwsim_radios, list) {
1306
		struct sk_buff *nskb;
1307 1308 1309 1310
		struct tx_iter_data tx_iter_data = {
			.receive = false,
			.channel = chan,
		};
1311

1312
		if (data == data2)
1313
			continue;
1314

1315 1316
		if (!data2->started || (data2->idle && !data2->tmp_chan) ||
		    !hwsim_ps_rx_ok(data2, skb))
1317 1318
			continue;

1319 1320 1321
		if (!(data->group & data2->group))
			continue;

1322 1323 1324
		if (data->netgroup != data2->netgroup)
			continue;

1325 1326 1327
		if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
		    !hwsim_chans_compat(chan, data2->channel)) {
			ieee80211_iterate_active_interfaces_atomic(
1328 1329
				data2->hw, IEEE80211_IFACE_ITER_NORMAL,
				mac80211_hwsim_tx_iter, &tx_iter_data);
1330 1331 1332 1333
			if (!tx_iter_data.receive)
				continue;
		}

1334 1335 1336 1337
		/*
		 * reserve some space for our vendor and the normal
		 * radiotap header, since we're copying anyway
		 */
1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356
		if (skb->len < PAGE_SIZE && paged_rx) {
			struct page *page = alloc_page(GFP_ATOMIC);

			if (!page)
				continue;

			nskb = dev_alloc_skb(128);
			if (!nskb) {
				__free_page(page);
				continue;
			}

			memcpy(page_address(page), skb->data, skb->len);
			skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
		} else {
			nskb = skb_copy(skb, GFP_ATOMIC);
			if (!nskb)
				continue;
		}
1357

1358
		if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1359
			ack = true;
1360

1361
		rx_status.mactime = now + data2->tsf_offset;
1362

1363
		memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1364 1365 1366

		mac80211_hwsim_add_vendor_rtap(nskb);

1367 1368
		data2->rx_pkts++;
		data2->rx_bytes += nskb->len;
1369
		ieee80211_rx_irqsafe(data2->hw, nskb);
1370
	}
1371
	spin_unlock(&hwsim_radio_lock);
1372

1373 1374 1375
	return ack;
}

1376 1377 1378
static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
			      struct ieee80211_tx_control *control,
			      struct sk_buff *skb)
1379
{
1380 1381
	struct mac80211_hwsim_data *data = hw->priv;
	struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1382
	struct ieee80211_hdr *hdr = (void *)skb->data;
1383 1384
	struct ieee80211_chanctx_conf *chanctx_conf;
	struct ieee80211_channel *channel;
1385
	bool ack;
1386
	u32 _portid;
1387

1388
	if (WARN_ON(skb->len < 10)) {
1389
		/* Should not happen; just a sanity check for addr1 use */
1390
		ieee80211_free_txskb(hw, skb);
1391
		return;
1392 1393
	}

1394
	if (!data->use_chanctx) {
1395 1396 1397 1398 1399 1400
		channel = data->channel;
	} else if (txi->hw_queue == 4) {
		channel = data->tmp_chan;
	} else {
		chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
		if (chanctx_conf)
1401
			channel = chanctx_conf->def.chan;
1402 1403 1404 1405 1406
		else
			channel = NULL;
	}

	if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1407
		ieee80211_free_txskb(hw, skb);
1408 1409 1410 1411
		return;
	}

	if (data->idle && !data->tmp_chan) {
1412
		wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
1413
		ieee80211_free_txskb(hw, skb);
1414 1415 1416 1417 1418 1419 1420 1421
		return;
	}

	if (txi->control.vif)
		hwsim_check_magic(txi->control.vif);
	if (control->sta)
		hwsim_check_sta_magic(control->sta);

1422
	if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1423 1424 1425
		ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
				       txi->control.rates,
				       ARRAY_SIZE(txi->control.rates));
1426

1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441
	if (skb->len >= 24 + 8 &&
	    ieee80211_is_probe_resp(hdr->frame_control)) {
		/* fake header transmission time */
		struct ieee80211_mgmt *mgmt;
		struct ieee80211_rate *txrate;
		u64 ts;

		mgmt = (struct ieee80211_mgmt *)skb->data;
		txrate = ieee80211_get_tx_rate(hw, txi);
		ts = mac80211_hwsim_get_tsf_raw();
		mgmt->u.probe_resp.timestamp =
			cpu_to_le64(ts + data->tsf_offset +
				    24 * 8 * 10 / txrate->bitrate);
	}

1442 1443
	mac80211_hwsim_monitor_rx(hw, skb, channel);

1444
	/* wmediumd mode check */
1445
	_portid = READ_ONCE(data->wmediumd);
1446

1447 1448
	if (_portid)
		return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1449 1450

	/* NO wmediumd detected, perfect medium simulation */
1451 1452
	data->tx_pkts++;
	data->tx_bytes += skb->len;
1453
	ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1454

1455
	if (ack && skb->len >= 16)
1456
		mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1457

1458
	ieee80211_tx_info_clear_status(txi);
1459 1460 1461 1462 1463

	/* frame was transmitted at most favorable rate at first attempt */
	txi->control.rates[0].count = 1;
	txi->control.rates[1].idx = -1;

1464 1465
	if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
		txi->flags |= IEEE80211_TX_STAT_ACK;
1466 1467 1468 1469 1470 1471 1472
	ieee80211_tx_status_irqsafe(hw, skb);
}


static int mac80211_hwsim_start(struct ieee80211_hw *hw)
{
	struct mac80211_hwsim_data *data = hw->priv;
1473
	wiphy_dbg(hw->wiphy, "%s\n", __func__);
1474
	data->started = true;
1475 1476 1477 1478 1479 1480 1481
	return 0;
}


static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
{
	struct mac80211_hwsim_data *data = hw->priv;
1482
	data->started = false;
T
Thomas Pedersen 已提交
1483
	tasklet_hrtimer_cancel(&data->beacon_timer);
1484
	wiphy_dbg(hw->wiphy, "%s\n", __func__);
1485 1486 1487 1488
}


static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1489
					struct ieee80211_vif *vif)
1490
{
1491 1492 1493
	wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
		  __func__, ieee80211_vif_type_p2p(vif),
		  vif->addr);
1494
	hwsim_set_magic(vif);
1495 1496 1497 1498 1499 1500 1501

	vif->cab_queue = 0;
	vif->hw_queue[IEEE80211_AC_VO] = 0;
	vif->hw_queue[IEEE80211_AC_VI] = 1;
	vif->hw_queue[IEEE80211_AC_BE] = 2;
	vif->hw_queue[IEEE80211_AC_BK] = 3;

1502 1503 1504 1505
	return 0;
}


1506 1507
static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
					   struct ieee80211_vif *vif,
1508 1509
					   enum nl80211_iftype newtype,
					   bool newp2p)
1510
{
1511
	newtype = ieee80211_iftype_p2p(newtype, newp2p);
1512 1513 1514
	wiphy_dbg(hw->wiphy,
		  "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
		  __func__, ieee80211_vif_type_p2p(vif),
1515
		    newtype, vif->addr);
1516 1517
	hwsim_check_magic(vif);

1518 1519 1520 1521 1522 1523
	/*
	 * interface may change from non-AP to AP in
	 * which case this needs to be set up again
	 */
	vif->cab_queue = 0;

1524 1525 1526
	return 0;
}

1527
static void mac80211_hwsim_remove_interface(
1528
	struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1529
{
1530 1531 1532
	wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
		  __func__, ieee80211_vif_type_p2p(vif),
		  vif->addr);
1533 1534
	hwsim_check_magic(vif);
	hwsim_clear_magic(vif);
1535 1536
}

1537 1538 1539 1540
static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
				    struct sk_buff *skb,
				    struct ieee80211_channel *chan)
{
1541
	struct mac80211_hwsim_data *data = hw->priv;
1542
	u32 _pid = READ_ONCE(data->wmediumd);
1543

1544
	if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1545 1546 1547 1548 1549 1550
		struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
		ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
				       txi->control.rates,
				       ARRAY_SIZE(txi->control.rates));
	}

1551 1552 1553 1554 1555 1556 1557 1558
	mac80211_hwsim_monitor_rx(hw, skb, chan);

	if (_pid)
		return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);

	mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
	dev_kfree_skb(skb);
}
1559 1560 1561 1562

static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
				     struct ieee80211_vif *vif)
{
1563 1564 1565 1566 1567
	struct mac80211_hwsim_data *data = arg;
	struct ieee80211_hw *hw = data->hw;
	struct ieee80211_tx_info *info;
	struct ieee80211_rate *txrate;
	struct ieee80211_mgmt *mgmt;
1568 1569
	struct sk_buff *skb;

1570 1571
	hwsim_check_magic(vif);

1572
	if (vif->type != NL80211_IFTYPE_AP &&
1573 1574
	    vif->type != NL80211_IFTYPE_MESH_POINT &&
	    vif->type != NL80211_IFTYPE_ADHOC)
1575 1576 1577 1578 1579
		return;

	skb = ieee80211_beacon_get(hw, vif);
	if (skb == NULL)
		return;
1580
	info = IEEE80211_SKB_CB(skb);
1581
	if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1582 1583 1584 1585
		ieee80211_get_tx_rates(vif, NULL, skb,
				       info->control.rates,
				       ARRAY_SIZE(info->control.rates));

1586 1587 1588 1589 1590 1591 1592 1593
	txrate = ieee80211_get_tx_rate(hw, info);

	mgmt = (struct ieee80211_mgmt *) skb->data;
	/* fake header transmission time */
	data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
	mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
					       data->tsf_offset +
					       24 * 8 * 10 / txrate->bitrate);
1594

1595
	mac80211_hwsim_tx_frame(hw, skb,
1596
				rcu_dereference(vif->chanctx_conf)->def.chan);
1597 1598 1599

	if (vif->csa_active && ieee80211_csa_is_complete(vif))
		ieee80211_csa_finish(vif);
1600 1601
}

T
Thomas Pedersen 已提交
1602 1603
static enum hrtimer_restart
mac80211_hwsim_beacon(struct hrtimer *timer)
1604
{
T
Thomas Pedersen 已提交
1605 1606 1607 1608 1609 1610
	struct mac80211_hwsim_data *data =
		container_of(timer, struct mac80211_hwsim_data,
			     beacon_timer.timer);
	struct ieee80211_hw *hw = data->hw;
	u64 bcn_int = data->beacon_int;
	ktime_t next_bcn;
1611

1612
	if (!data->started)
T
Thomas Pedersen 已提交
1613
		goto out;
1614

J
Jouni Malinen 已提交
1615
	ieee80211_iterate_active_interfaces_atomic(
1616
		hw, IEEE80211_IFACE_ITER_NORMAL,
1617
		mac80211_hwsim_beacon_tx, data);
1618

1619 1620 1621 1622 1623 1624
	/* beacon at new TBTT + beacon interval */
	if (data->bcn_delta) {
		bcn_int -= data->bcn_delta;
		data->bcn_delta = 0;
	}

T
Thomas Pedersen 已提交
1625 1626 1627 1628 1629
	next_bcn = ktime_add(hrtimer_get_expires(timer),
			     ns_to_ktime(bcn_int * 1000));
	tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
out:
	return HRTIMER_NORESTART;
1630 1631
}

1632 1633 1634 1635 1636 1637 1638
static const char * const hwsim_chanwidths[] = {
	[NL80211_CHAN_WIDTH_20_NOHT] = "noht",
	[NL80211_CHAN_WIDTH_20] = "ht20",
	[NL80211_CHAN_WIDTH_40] = "ht40",
	[NL80211_CHAN_WIDTH_80] = "vht80",
	[NL80211_CHAN_WIDTH_80P80] = "vht80p80",
	[NL80211_CHAN_WIDTH_160] = "vht160",
1639
};
1640

1641
static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1642 1643
{
	struct mac80211_hwsim_data *data = hw->priv;
1644
	struct ieee80211_conf *conf = &hw->conf;
1645 1646 1647 1648 1649 1650
	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",
	};
1651
	int idx;
1652

1653
	if (conf->chandef.chan)
1654 1655 1656 1657 1658 1659 1660 1661 1662 1663
		wiphy_dbg(hw->wiphy,
			  "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
			  __func__,
			  conf->chandef.chan->center_freq,
			  conf->chandef.center_freq1,
			  conf->chandef.center_freq2,
			  hwsim_chanwidths[conf->chandef.width],
			  !!(conf->flags & IEEE80211_CONF_IDLE),
			  !!(conf->flags & IEEE80211_CONF_PS),
			  smps_modes[conf->smps_mode]);
1664
	else
1665 1666 1667 1668 1669 1670
		wiphy_dbg(hw->wiphy,
			  "%s (freq=0 idle=%d ps=%d smps=%s)\n",
			  __func__,
			  !!(conf->flags & IEEE80211_CONF_IDLE),
			  !!(conf->flags & IEEE80211_CONF_PS),
			  smps_modes[conf->smps_mode]);
1671

1672 1673
	data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);

1674
	WARN_ON(conf->chandef.chan && data->use_chanctx);
1675

1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687
	mutex_lock(&data->mutex);
	if (data->scanning && conf->chandef.chan) {
		for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
			if (data->survey_data[idx].channel == data->channel) {
				data->survey_data[idx].start =
					data->survey_data[idx].next_start;
				data->survey_data[idx].end = jiffies;
				break;
			}
		}

		data->channel = conf->chandef.chan;
1688

1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700
		for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
			if (data->survey_data[idx].channel &&
			    data->survey_data[idx].channel != data->channel)
				continue;
			data->survey_data[idx].channel = data->channel;
			data->survey_data[idx].next_start = jiffies;
			break;
		}
	} else {
		data->channel = conf->chandef.chan;
	}
	mutex_unlock(&data->mutex);
1701

1702
	if (!data->started || !data->beacon_int)
T
Thomas Pedersen 已提交
1703 1704
		tasklet_hrtimer_cancel(&data->beacon_timer);
	else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1705 1706 1707 1708
		u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
		u32 bcn_int = data->beacon_int;
		u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);

T
Thomas Pedersen 已提交
1709
		tasklet_hrtimer_start(&data->beacon_timer,
1710
				      ns_to_ktime(until_tbtt * 1000),
T
Thomas Pedersen 已提交
1711 1712
				      HRTIMER_MODE_REL);
	}
1713 1714 1715 1716 1717 1718 1719

	return 0;
}


static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
					    unsigned int changed_flags,
1720
					    unsigned int *total_flags,u64 multicast)
1721 1722 1723
{
	struct mac80211_hwsim_data *data = hw->priv;

1724
	wiphy_dbg(hw->wiphy, "%s\n", __func__);
1725 1726 1727 1728 1729 1730 1731 1732

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

	*total_flags = data->rx_filter;
}

1733 1734 1735 1736 1737 1738 1739 1740 1741 1742
static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
				       struct ieee80211_vif *vif)
{
	unsigned int *count = data;
	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;

	if (vp->bcn_en)
		(*count)++;
}

1743 1744 1745 1746 1747
static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
					    struct ieee80211_vif *vif,
					    struct ieee80211_bss_conf *info,
					    u32 changed)
{
1748
	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1749
	struct mac80211_hwsim_data *data = hw->priv;
1750

1751
	hwsim_check_magic(vif);
1752

1753 1754
	wiphy_dbg(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
		  __func__, changed, vif->addr);
1755

1756
	if (changed & BSS_CHANGED_BSSID) {
1757 1758
		wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
			  __func__, info->bssid);
1759 1760 1761
		memcpy(vp->bssid, info->bssid, ETH_ALEN);
	}

1762
	if (changed & BSS_CHANGED_ASSOC) {
1763 1764
		wiphy_dbg(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
			  info->assoc, info->aid);
1765 1766
		vp->assoc = info->assoc;
		vp->aid = info->aid;
1767 1768
	}

T
Thomas Pedersen 已提交
1769
	if (changed & BSS_CHANGED_BEACON_ENABLED) {
1770 1771
		wiphy_dbg(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
			  info->enable_beacon, info->beacon_int);
1772
		vp->bcn_en = info->enable_beacon;
T
Thomas Pedersen 已提交
1773 1774 1775
		if (data->started &&
		    !hrtimer_is_queued(&data->beacon_timer.timer) &&
		    info->enable_beacon) {
1776 1777
			u64 tsf, until_tbtt;
			u32 bcn_int;
1778
			data->beacon_int = info->beacon_int * 1024;
1779 1780 1781
			tsf = mac80211_hwsim_get_tsf(hw, vif);
			bcn_int = data->beacon_int;
			until_tbtt = bcn_int - do_div(tsf, bcn_int);
T
Thomas Pedersen 已提交
1782
			tasklet_hrtimer_start(&data->beacon_timer,
1783
					      ns_to_ktime(until_tbtt * 1000),
T
Thomas Pedersen 已提交
1784
					      HRTIMER_MODE_REL);
1785 1786
		} else if (!info->enable_beacon) {
			unsigned int count = 0;
1787
			ieee80211_iterate_active_interfaces_atomic(
1788 1789
				data->hw, IEEE80211_IFACE_ITER_NORMAL,
				mac80211_hwsim_bcn_en_iter, &count);
1790 1791
			wiphy_dbg(hw->wiphy, "  beaconing vifs remaining: %u",
				  count);
1792
			if (count == 0) {
1793
				tasklet_hrtimer_cancel(&data->beacon_timer);
1794 1795
				data->beacon_int = 0;
			}
1796
		}
1797 1798
	}

1799
	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1800 1801
		wiphy_dbg(hw->wiphy, "  ERP_CTS_PROT: %d\n",
			  info->use_cts_prot);
1802 1803 1804
	}

	if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1805 1806
		wiphy_dbg(hw->wiphy, "  ERP_PREAMBLE: %d\n",
			  info->use_short_preamble);
1807 1808 1809
	}

	if (changed & BSS_CHANGED_ERP_SLOT) {
1810
		wiphy_dbg(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1811 1812 1813
	}

	if (changed & BSS_CHANGED_HT) {
1814 1815
		wiphy_dbg(hw->wiphy, "  HT: op_mode=0x%x\n",
			  info->ht_operation_mode);
1816 1817 1818
	}

	if (changed & BSS_CHANGED_BASIC_RATES) {
1819 1820
		wiphy_dbg(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
			  (unsigned long long) info->basic_rates);
1821
	}
1822 1823

	if (changed & BSS_CHANGED_TXPOWER)
1824
		wiphy_dbg(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1825 1826
}

1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846
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;
}

1847 1848
static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
				      struct ieee80211_vif *vif,
1849 1850
				      enum sta_notify_cmd cmd,
				      struct ieee80211_sta *sta)
1851 1852
{
	hwsim_check_magic(vif);
1853

1854
	switch (cmd) {
1855 1856 1857 1858
	case STA_NOTIFY_SLEEP:
	case STA_NOTIFY_AWAKE:
		/* TODO: make good use of these flags */
		break;
1859 1860 1861
	default:
		WARN(1, "Invalid sta notify: %d\n", cmd);
		break;
1862 1863 1864 1865 1866 1867 1868 1869 1870
	}
}

static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
				  struct ieee80211_sta *sta,
				  bool set)
{
	hwsim_check_sta_magic(sta);
	return 0;
1871
}
1872

1873
static int mac80211_hwsim_conf_tx(
1874 1875
	struct ieee80211_hw *hw,
	struct ieee80211_vif *vif, u16 queue,
1876 1877
	const struct ieee80211_tx_queue_params *params)
{
1878 1879 1880 1881 1882
	wiphy_dbg(hw->wiphy,
		  "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
		  __func__, queue,
		  params->txop, params->cw_min,
		  params->cw_max, params->aifs);
1883 1884 1885
	return 0;
}

1886 1887
static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
				     struct survey_info *survey)
1888
{
1889
	struct mac80211_hwsim_data *hwsim = hw->priv;
1890

1891
	if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
1892 1893
		return -ENOENT;

1894 1895 1896 1897 1898 1899
	mutex_lock(&hwsim->mutex);
	survey->channel = hwsim->survey_data[idx].channel;
	if (!survey->channel) {
		mutex_unlock(&hwsim->mutex);
		return -ENOENT;
	}
1900 1901

	/*
1902
	 * Magically conjured dummy values --- this is only ok for simulated hardware.
1903
	 *
1904 1905
	 * A real driver which cannot determine real values noise MUST NOT
	 * report any, especially not a magically conjured ones :-)
1906
	 */
1907 1908 1909
	survey->filled = SURVEY_INFO_NOISE_DBM |
			 SURVEY_INFO_TIME |
			 SURVEY_INFO_TIME_BUSY;
1910
	survey->noise = -92;
1911 1912 1913 1914 1915 1916
	survey->time =
		jiffies_to_msecs(hwsim->survey_data[idx].end -
				 hwsim->survey_data[idx].start);
	/* report 12.5% of channel time is used */
	survey->time_busy = survey->time/8;
	mutex_unlock(&hwsim->mutex);
1917 1918 1919 1920

	return 0;
}

1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940
#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,
1941 1942
	HWSIM_TM_CMD_STOP_QUEUES	= 2,
	HWSIM_TM_CMD_WAKE_QUEUES	= 3,
1943 1944 1945 1946 1947 1948 1949
};

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 },
};

J
Johannes Berg 已提交
1950
static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1951
				       struct ieee80211_vif *vif,
J
Johannes Berg 已提交
1952
				       void *data, int len)
1953 1954 1955 1956 1957 1958 1959
{
	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,
1960
			hwsim_testmode_policy, NULL);
1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977
	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;
1978 1979
		if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
			goto nla_put_failure;
1980
		return cfg80211_testmode_reply(skb);
1981 1982 1983 1984 1985 1986
	case HWSIM_TM_CMD_STOP_QUEUES:
		ieee80211_stop_queues(hw);
		return 0;
	case HWSIM_TM_CMD_WAKE_QUEUES:
		ieee80211_wake_queues(hw);
		return 0;
1987 1988 1989 1990 1991 1992 1993 1994 1995 1996
	default:
		return -EOPNOTSUPP;
	}

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

1997 1998
static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
				       struct ieee80211_vif *vif,
1999
				       struct ieee80211_ampdu_params *params)
2000
{
2001 2002 2003 2004
	struct ieee80211_sta *sta = params->sta;
	enum ieee80211_ampdu_mlme_action action = params->action;
	u16 tid = params->tid;

2005 2006 2007 2008
	switch (action) {
	case IEEE80211_AMPDU_TX_START:
		ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
		break;
2009 2010 2011
	case IEEE80211_AMPDU_TX_STOP_CONT:
	case IEEE80211_AMPDU_TX_STOP_FLUSH:
	case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
		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;
}

2026 2027 2028
static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
				 struct ieee80211_vif *vif,
				 u32 queues, bool drop)
2029
{
2030
	/* Not implemented, queues only on kernel side */
2031 2032
}

2033
static void hw_scan_work(struct work_struct *work)
2034
{
2035 2036 2037 2038
	struct mac80211_hwsim_data *hwsim =
		container_of(work, struct mac80211_hwsim_data, hw_scan.work);
	struct cfg80211_scan_request *req = hwsim->hw_scan_request;
	int dwell, i;
2039

2040 2041
	mutex_lock(&hwsim->mutex);
	if (hwsim->scan_chan_idx >= req->n_channels) {
2042 2043 2044 2045
		struct cfg80211_scan_info info = {
			.aborted = false,
		};

2046
		wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
2047
		ieee80211_scan_completed(hwsim->hw, &info);
2048 2049 2050 2051 2052 2053 2054
		hwsim->hw_scan_request = NULL;
		hwsim->hw_scan_vif = NULL;
		hwsim->tmp_chan = NULL;
		mutex_unlock(&hwsim->mutex);
		return;
	}

2055 2056
	wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
		  req->channels[hwsim->scan_chan_idx]->center_freq);
2057 2058

	hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
2059 2060
	if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
				      IEEE80211_CHAN_RADAR) ||
2061 2062 2063 2064 2065 2066 2067
	    !req->n_ssids) {
		dwell = 120;
	} else {
		dwell = 30;
		/* send probes */
		for (i = 0; i < req->n_ssids; i++) {
			struct sk_buff *probe;
2068
			struct ieee80211_mgmt *mgmt;
2069 2070

			probe = ieee80211_probereq_get(hwsim->hw,
2071
						       hwsim->scan_addr,
2072 2073
						       req->ssids[i].ssid,
						       req->ssids[i].ssid_len,
2074
						       req->ie_len);
2075 2076
			if (!probe)
				continue;
2077

2078 2079 2080 2081
			mgmt = (struct ieee80211_mgmt *) probe->data;
			memcpy(mgmt->da, req->bssid, ETH_ALEN);
			memcpy(mgmt->bssid, req->bssid, ETH_ALEN);

2082
			if (req->ie_len)
2083
				skb_put_data(probe, req->ie, req->ie_len);
2084

2085 2086 2087 2088 2089 2090 2091 2092
			local_bh_disable();
			mac80211_hwsim_tx_frame(hwsim->hw, probe,
						hwsim->tmp_chan);
			local_bh_enable();
		}
	}
	ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
				     msecs_to_jiffies(dwell));
2093 2094 2095 2096
	hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
	hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
	hwsim->survey_data[hwsim->scan_chan_idx].end =
		jiffies + msecs_to_jiffies(dwell);
2097 2098
	hwsim->scan_chan_idx++;
	mutex_unlock(&hwsim->mutex);
2099 2100 2101
}

static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2102
				  struct ieee80211_vif *vif,
2103
				  struct ieee80211_scan_request *hw_req)
2104
{
2105
	struct mac80211_hwsim_data *hwsim = hw->priv;
2106
	struct cfg80211_scan_request *req = &hw_req->req;
2107

2108 2109 2110 2111 2112 2113 2114 2115
	mutex_lock(&hwsim->mutex);
	if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
		mutex_unlock(&hwsim->mutex);
		return -EBUSY;
	}
	hwsim->hw_scan_request = req;
	hwsim->hw_scan_vif = vif;
	hwsim->scan_chan_idx = 0;
2116 2117 2118 2119 2120 2121
	if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
		get_random_mask_addr(hwsim->scan_addr,
				     hw_req->req.mac_addr,
				     hw_req->req.mac_addr_mask);
	else
		memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2122
	memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2123
	mutex_unlock(&hwsim->mutex);
2124

2125
	wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
2126

2127
	ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2128 2129 2130 2131

	return 0;
}

2132 2133 2134 2135
static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
					  struct ieee80211_vif *vif)
{
	struct mac80211_hwsim_data *hwsim = hw->priv;
2136 2137 2138
	struct cfg80211_scan_info info = {
		.aborted = true,
	};
2139

2140
	wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
2141 2142 2143 2144

	cancel_delayed_work_sync(&hwsim->hw_scan);

	mutex_lock(&hwsim->mutex);
2145
	ieee80211_scan_completed(hwsim->hw, &info);
2146 2147 2148 2149 2150 2151
	hwsim->tmp_chan = NULL;
	hwsim->hw_scan_request = NULL;
	hwsim->hw_scan_vif = NULL;
	mutex_unlock(&hwsim->mutex);
}

2152 2153 2154
static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
				   struct ieee80211_vif *vif,
				   const u8 *mac_addr)
2155 2156 2157 2158 2159 2160
{
	struct mac80211_hwsim_data *hwsim = hw->priv;

	mutex_lock(&hwsim->mutex);

	if (hwsim->scanning) {
2161
		pr_debug("two hwsim sw_scans detected!\n");
2162 2163 2164
		goto out;
	}

2165
	pr_debug("hwsim sw_scan request, prepping stuff\n");
2166 2167

	memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2168
	hwsim->scanning = true;
2169
	memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2170 2171 2172 2173 2174

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

2175 2176
static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
					    struct ieee80211_vif *vif)
2177 2178 2179 2180 2181
{
	struct mac80211_hwsim_data *hwsim = hw->priv;

	mutex_lock(&hwsim->mutex);

2182
	pr_debug("hwsim sw_scan_complete\n");
2183
	hwsim->scanning = false;
2184
	eth_zero_addr(hwsim->scan_addr);
2185 2186 2187 2188

	mutex_unlock(&hwsim->mutex);
}

2189 2190 2191 2192 2193 2194 2195
static void hw_roc_start(struct work_struct *work)
{
	struct mac80211_hwsim_data *hwsim =
		container_of(work, struct mac80211_hwsim_data, roc_start.work);

	mutex_lock(&hwsim->mutex);

2196
	wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
2197 2198 2199 2200 2201 2202 2203 2204 2205
	hwsim->tmp_chan = hwsim->roc_chan;
	ieee80211_ready_on_channel(hwsim->hw);

	ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
				     msecs_to_jiffies(hwsim->roc_duration));

	mutex_unlock(&hwsim->mutex);
}

2206 2207 2208 2209 2210 2211 2212 2213 2214 2215
static void hw_roc_done(struct work_struct *work)
{
	struct mac80211_hwsim_data *hwsim =
		container_of(work, struct mac80211_hwsim_data, roc_done.work);

	mutex_lock(&hwsim->mutex);
	ieee80211_remain_on_channel_expired(hwsim->hw);
	hwsim->tmp_chan = NULL;
	mutex_unlock(&hwsim->mutex);

2216
	wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
2217 2218 2219
}

static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2220
			      struct ieee80211_vif *vif,
2221
			      struct ieee80211_channel *chan,
2222 2223
			      int duration,
			      enum ieee80211_roc_type type)
2224 2225 2226 2227 2228 2229 2230 2231 2232
{
	struct mac80211_hwsim_data *hwsim = hw->priv;

	mutex_lock(&hwsim->mutex);
	if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
		mutex_unlock(&hwsim->mutex);
		return -EBUSY;
	}

2233 2234
	hwsim->roc_chan = chan;
	hwsim->roc_duration = duration;
2235 2236
	mutex_unlock(&hwsim->mutex);

2237 2238
	wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
		  chan->center_freq, duration);
2239
	ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2240 2241 2242 2243 2244 2245 2246 2247

	return 0;
}

static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
{
	struct mac80211_hwsim_data *hwsim = hw->priv;

2248
	cancel_delayed_work_sync(&hwsim->roc_start);
2249 2250 2251 2252 2253 2254
	cancel_delayed_work_sync(&hwsim->roc_done);

	mutex_lock(&hwsim->mutex);
	hwsim->tmp_chan = NULL;
	mutex_unlock(&hwsim->mutex);

2255
	wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
2256 2257 2258 2259 2260 2261 2262 2263

	return 0;
}

static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
				      struct ieee80211_chanctx_conf *ctx)
{
	hwsim_set_chanctx_magic(ctx);
2264 2265 2266 2267
	wiphy_dbg(hw->wiphy,
		  "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
		  ctx->def.chan->center_freq, ctx->def.width,
		  ctx->def.center_freq1, ctx->def.center_freq2);
2268 2269 2270 2271 2272 2273
	return 0;
}

static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
					  struct ieee80211_chanctx_conf *ctx)
{
2274 2275 2276 2277
	wiphy_dbg(hw->wiphy,
		  "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
		  ctx->def.chan->center_freq, ctx->def.width,
		  ctx->def.center_freq1, ctx->def.center_freq2);
2278 2279 2280 2281 2282 2283 2284 2285 2286
	hwsim_check_chanctx_magic(ctx);
	hwsim_clear_chanctx_magic(ctx);
}

static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
					  struct ieee80211_chanctx_conf *ctx,
					  u32 changed)
{
	hwsim_check_chanctx_magic(ctx);
2287 2288 2289 2290
	wiphy_dbg(hw->wiphy,
		  "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
		  ctx->def.chan->center_freq, ctx->def.width,
		  ctx->def.center_freq1, ctx->def.center_freq2);
2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310
}

static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
					     struct ieee80211_vif *vif,
					     struct ieee80211_chanctx_conf *ctx)
{
	hwsim_check_magic(vif);
	hwsim_check_chanctx_magic(ctx);

	return 0;
}

static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
						struct ieee80211_vif *vif,
						struct ieee80211_chanctx_conf *ctx)
{
	hwsim_check_magic(vif);
	hwsim_check_chanctx_magic(ctx);
}

2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359
static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
	"tx_pkts_nic",
	"tx_bytes_nic",
	"rx_pkts_nic",
	"rx_bytes_nic",
	"d_tx_dropped",
	"d_tx_failed",
	"d_ps_mode",
	"d_group",
};

#define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)

static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
					  struct ieee80211_vif *vif,
					  u32 sset, u8 *data)
{
	if (sset == ETH_SS_STATS)
		memcpy(data, *mac80211_hwsim_gstrings_stats,
		       sizeof(mac80211_hwsim_gstrings_stats));
}

static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
					    struct ieee80211_vif *vif, int sset)
{
	if (sset == ETH_SS_STATS)
		return MAC80211_HWSIM_SSTATS_LEN;
	return 0;
}

static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
					struct ieee80211_vif *vif,
					struct ethtool_stats *stats, u64 *data)
{
	struct mac80211_hwsim_data *ar = hw->priv;
	int i = 0;

	data[i++] = ar->tx_pkts;
	data[i++] = ar->tx_bytes;
	data[i++] = ar->rx_pkts;
	data[i++] = ar->rx_bytes;
	data[i++] = ar->tx_dropped;
	data[i++] = ar->tx_failed;
	data[i++] = ar->ps;
	data[i++] = ar->group;

	WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
}

2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384
#define HWSIM_COMMON_OPS					\
	.tx = mac80211_hwsim_tx,				\
	.start = mac80211_hwsim_start,				\
	.stop = mac80211_hwsim_stop,				\
	.add_interface = mac80211_hwsim_add_interface,		\
	.change_interface = mac80211_hwsim_change_interface,	\
	.remove_interface = mac80211_hwsim_remove_interface,	\
	.config = mac80211_hwsim_config,			\
	.configure_filter = mac80211_hwsim_configure_filter,	\
	.bss_info_changed = mac80211_hwsim_bss_info_changed,	\
	.sta_add = mac80211_hwsim_sta_add,			\
	.sta_remove = mac80211_hwsim_sta_remove,		\
	.sta_notify = mac80211_hwsim_sta_notify,		\
	.set_tim = mac80211_hwsim_set_tim,			\
	.conf_tx = mac80211_hwsim_conf_tx,			\
	.get_survey = mac80211_hwsim_get_survey,		\
	CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)	\
	.ampdu_action = mac80211_hwsim_ampdu_action,		\
	.flush = mac80211_hwsim_flush,				\
	.get_tsf = mac80211_hwsim_get_tsf,			\
	.set_tsf = mac80211_hwsim_set_tsf,			\
	.get_et_sset_count = mac80211_hwsim_get_et_sset_count,	\
	.get_et_stats = mac80211_hwsim_get_et_stats,		\
	.get_et_strings = mac80211_hwsim_get_et_strings,

2385
static const struct ieee80211_ops mac80211_hwsim_ops = {
2386
	HWSIM_COMMON_OPS
2387 2388
	.sw_scan_start = mac80211_hwsim_sw_scan,
	.sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2389 2390
};

2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404
static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
	HWSIM_COMMON_OPS
	.hw_scan = mac80211_hwsim_hw_scan,
	.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
	.sw_scan_start = NULL,
	.sw_scan_complete = NULL,
	.remain_on_channel = mac80211_hwsim_roc,
	.cancel_remain_on_channel = mac80211_hwsim_croc,
	.add_chanctx = mac80211_hwsim_add_chanctx,
	.remove_chanctx = mac80211_hwsim_remove_chanctx,
	.change_chanctx = mac80211_hwsim_change_chanctx,
	.assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
	.unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
};
2405

2406 2407 2408 2409 2410 2411 2412 2413 2414 2415
struct hwsim_new_radio_params {
	unsigned int channels;
	const char *reg_alpha2;
	const struct ieee80211_regdomain *regd;
	bool reg_strict;
	bool p2p_device;
	bool use_chanctx;
	bool destroy_on_close;
	const char *hwname;
	bool no_vif;
2416
	const u8 *perm_addr;
2417 2418 2419 2420 2421 2422
};

static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
				   struct genl_info *info)
{
	if (info)
J
Jiri Benc 已提交
2423 2424
		genl_notify(&hwsim_genl_family, mcast_skb, info,
			    HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2425 2426 2427 2428 2429
	else
		genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
				  HWSIM_MCGRP_CONFIG, GFP_KERNEL);
}

2430 2431
static int append_radio_msg(struct sk_buff *skb, int id,
			    struct hwsim_new_radio_params *param)
2432 2433 2434 2435 2436
{
	int ret;

	ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
	if (ret < 0)
2437
		return ret;
2438 2439 2440 2441

	if (param->channels) {
		ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
		if (ret < 0)
2442
			return ret;
2443 2444 2445 2446 2447 2448
	}

	if (param->reg_alpha2) {
		ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
			      param->reg_alpha2);
		if (ret < 0)
2449
			return ret;
2450 2451 2452 2453 2454
	}

	if (param->regd) {
		int i;

2455 2456 2457
		for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
			if (hwsim_world_regdom_custom[i] != param->regd)
				continue;
2458 2459 2460

			ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
			if (ret < 0)
2461
				return ret;
2462
			break;
2463 2464 2465 2466 2467 2468
		}
	}

	if (param->reg_strict) {
		ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
		if (ret < 0)
2469
			return ret;
2470 2471 2472 2473 2474
	}

	if (param->p2p_device) {
		ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
		if (ret < 0)
2475
			return ret;
2476 2477 2478 2479 2480
	}

	if (param->use_chanctx) {
		ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
		if (ret < 0)
2481
			return ret;
2482 2483 2484 2485 2486 2487
	}

	if (param->hwname) {
		ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
			      strlen(param->hwname), param->hwname);
		if (ret < 0)
2488
			return ret;
2489 2490
	}

2491
	return 0;
2492 2493
}

2494
static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2495 2496 2497
				  struct hwsim_new_radio_params *param)
{
	struct sk_buff *mcast_skb;
2498
	void *data;
2499

2500
	mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2501 2502 2503
	if (!mcast_skb)
		return;

2504 2505 2506 2507 2508 2509 2510 2511 2512 2513
	data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
			   HWSIM_CMD_NEW_RADIO);
	if (!data)
		goto out_err;

	if (append_radio_msg(mcast_skb, id, param) < 0)
		goto out_err;

	genlmsg_end(mcast_skb, data);

2514
	hwsim_mcast_config_msg(mcast_skb, info);
2515 2516 2517 2518
	return;

out_err:
	nlmsg_free(mcast_skb);
2519 2520
}

I
Ilan Peer 已提交
2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637
static const struct ieee80211_sband_iftype_data he_capa_2ghz = {
	/* TODO: should we support other types, e.g., P2P?*/
	.types_mask = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP),
	.he_cap = {
		.has_he = true,
		.he_cap_elem = {
			.mac_cap_info[0] =
				IEEE80211_HE_MAC_CAP0_HTC_HE,
			.mac_cap_info[1] =
				IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
				IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_QOS_8,
			.mac_cap_info[2] =
				IEEE80211_HE_MAC_CAP2_BSR |
				IEEE80211_HE_MAC_CAP2_MU_CASCADING |
				IEEE80211_HE_MAC_CAP2_ACK_EN,
			.mac_cap_info[3] =
				IEEE80211_HE_MAC_CAP3_GRP_ADDR_MULTI_STA_BA_DL_MU |
				IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
				IEEE80211_HE_MAC_CAP3_MAX_A_AMPDU_LEN_EXP_VHT_2,
			.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
			.phy_cap_info[0] =
				IEEE80211_HE_PHY_CAP0_DUAL_BAND,
			.phy_cap_info[1] =
				IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
				IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
				IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
				IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_MAX_NSTS,
			.phy_cap_info[2] =
				IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
				IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
				IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
				IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
				IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,

			/* Leave all the other PHY capability bytes unset, as
			 * DCM, beam forming, RU and PPE threshold information
			 * are not supported
			 */
		},
		.he_mcs_nss_supp = {
			.rx_mcs_80 = cpu_to_le16(0xfffa),
			.tx_mcs_80 = cpu_to_le16(0xfffa),
			.rx_mcs_160 = cpu_to_le16(0xffff),
			.tx_mcs_160 = cpu_to_le16(0xffff),
			.rx_mcs_80p80 = cpu_to_le16(0xffff),
			.tx_mcs_80p80 = cpu_to_le16(0xffff),
		},
	},
};

static const struct ieee80211_sband_iftype_data he_capa_5ghz = {
	/* TODO: should we support other types, e.g., P2P?*/
	.types_mask = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP),
	.he_cap = {
		.has_he = true,
		.he_cap_elem = {
			.mac_cap_info[0] =
				IEEE80211_HE_MAC_CAP0_HTC_HE,
			.mac_cap_info[1] =
				IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
				IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_QOS_8,
			.mac_cap_info[2] =
				IEEE80211_HE_MAC_CAP2_BSR |
				IEEE80211_HE_MAC_CAP2_MU_CASCADING |
				IEEE80211_HE_MAC_CAP2_ACK_EN,
			.mac_cap_info[3] =
				IEEE80211_HE_MAC_CAP3_GRP_ADDR_MULTI_STA_BA_DL_MU |
				IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
				IEEE80211_HE_MAC_CAP3_MAX_A_AMPDU_LEN_EXP_VHT_2,
			.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
			.phy_cap_info[0] =
				IEEE80211_HE_PHY_CAP0_DUAL_BAND |
				IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
				IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
				IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
			.phy_cap_info[1] =
				IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
				IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
				IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
				IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_MAX_NSTS,
			.phy_cap_info[2] =
				IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
				IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
				IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
				IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
				IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,

			/* Leave all the other PHY capability bytes unset, as
			 * DCM, beam forming, RU and PPE threshold information
			 * are not supported
			 */
		},
		.he_mcs_nss_supp = {
			.rx_mcs_80 = cpu_to_le16(0xfffa),
			.tx_mcs_80 = cpu_to_le16(0xfffa),
			.rx_mcs_160 = cpu_to_le16(0xfffa),
			.tx_mcs_160 = cpu_to_le16(0xfffa),
			.rx_mcs_80p80 = cpu_to_le16(0xfffa),
			.tx_mcs_80p80 = cpu_to_le16(0xfffa),
		},
	},
};

static void mac80211_hswim_he_capab(struct ieee80211_supported_band *sband)
{
	if (sband->band == NL80211_BAND_2GHZ)
		sband->iftype_data =
			(struct ieee80211_sband_iftype_data *)&he_capa_2ghz;
	else if (sband->band == NL80211_BAND_5GHZ)
		sband->iftype_data =
			(struct ieee80211_sband_iftype_data *)&he_capa_5ghz;
	else
		return;

	sband->n_iftype_data = 1;
}

2638 2639
static int mac80211_hwsim_new_radio(struct genl_info *info,
				    struct hwsim_new_radio_params *param)
2640
{
2641 2642
	int err;
	u8 addr[ETH_ALEN];
2643
	struct mac80211_hwsim_data *data;
2644
	struct ieee80211_hw *hw;
2645
	enum nl80211_band band;
2646
	const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2647
	struct net *net;
2648
	int idx;
2649

2650
	if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2651 2652
		return -EINVAL;

2653
	spin_lock_bh(&hwsim_radio_lock);
2654
	idx = hwsim_radio_idx++;
2655 2656
	spin_unlock_bh(&hwsim_radio_lock);

2657
	if (param->use_chanctx)
2658
		ops = &mac80211_hwsim_mchan_ops;
2659
	hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2660
	if (!hw) {
2661
		pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
2662 2663 2664
		err = -ENOMEM;
		goto failed;
	}
2665

2666 2667 2668
	/* ieee80211_alloc_hw_nm may have used a default name */
	param->hwname = wiphy_name(hw->wiphy);

2669 2670 2671 2672 2673 2674
	if (info)
		net = genl_info_net(info);
	else
		net = &init_net;
	wiphy_net_set(hw->wiphy, net);

2675 2676
	data = hw->priv;
	data->hw = hw;
2677

2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688
	data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
	if (IS_ERR(data->dev)) {
		printk(KERN_DEBUG
		       "mac80211_hwsim: device_create failed (%ld)\n",
		       PTR_ERR(data->dev));
		err = -ENOMEM;
		goto failed_drvdata;
	}
	data->dev->driver = &mac80211_hwsim_driver.driver;
	err = device_bind_driver(data->dev);
	if (err != 0) {
2689
		pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
2690
		       err);
2691
		goto failed_bind;
2692 2693
	}

2694
	skb_queue_head_init(&data->pending);
2695

2696
	SET_IEEE80211_DEV(hw, data->dev);
2697 2698 2699 2700 2701 2702 2703 2704
	if (!param->perm_addr) {
		eth_zero_addr(addr);
		addr[0] = 0x02;
		addr[3] = idx >> 8;
		addr[4] = idx;
		memcpy(data->addresses[0].addr, addr, ETH_ALEN);
		/* Why need here second address ? */
		memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2705
		data->addresses[1].addr[0] |= 0x40;
2706 2707 2708 2709 2710 2711 2712 2713 2714 2715
		hw->wiphy->n_addresses = 2;
		hw->wiphy->addresses = data->addresses;
		/* possible address clash is checked at hash table insertion */
	} else {
		memcpy(data->addresses[0].addr, param->perm_addr, ETH_ALEN);
		/* compatibility with automatically generated mac addr */
		memcpy(data->addresses[1].addr, param->perm_addr, ETH_ALEN);
		hw->wiphy->n_addresses = 2;
		hw->wiphy->addresses = data->addresses;
	}
2716

2717 2718
	data->channels = param->channels;
	data->use_chanctx = param->use_chanctx;
2719
	data->idx = idx;
2720 2721 2722
	data->destroy_on_close = param->destroy_on_close;
	if (info)
		data->portid = info->snd_portid;
2723

2724
	if (data->use_chanctx) {
2725 2726 2727 2728
		hw->wiphy->max_scan_ssids = 255;
		hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
		hw->wiphy->max_remain_on_channel_duration = 1000;
		hw->wiphy->iface_combinations = &data->if_combination;
2729
		if (param->p2p_device)
2730 2731 2732
			data->if_combination = hwsim_if_comb_p2p_dev[0];
		else
			data->if_combination = hwsim_if_comb[0];
2733 2734 2735
		hw->wiphy->n_iface_combinations = 1;
		/* For channels > 1 DFS is not allowed */
		data->if_combination.radar_detect_widths = 0;
2736
		data->if_combination.num_different_channels = data->channels;
2737
	} else if (param->p2p_device) {
2738 2739 2740
		hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
		hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2741 2742 2743 2744
	} else {
		hw->wiphy->iface_combinations = hwsim_if_comb;
		hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
	}
2745

2746
	INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2747 2748
	INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
	INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2749

2750 2751 2752 2753 2754 2755 2756
	hw->queues = 5;
	hw->offchannel_tx_hw_queue = 4;
	hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
				     BIT(NL80211_IFTYPE_AP) |
				     BIT(NL80211_IFTYPE_P2P_CLIENT) |
				     BIT(NL80211_IFTYPE_P2P_GO) |
				     BIT(NL80211_IFTYPE_ADHOC) |
2757 2758
				     BIT(NL80211_IFTYPE_MESH_POINT);

2759
	if (param->p2p_device)
2760
		hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2761

2762 2763 2764 2765 2766 2767 2768 2769
	ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
	ieee80211_hw_set(hw, CHANCTX_STA_CSA);
	ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
	ieee80211_hw_set(hw, QUEUE_CONTROL);
	ieee80211_hw_set(hw, WANT_MONITOR_VIF);
	ieee80211_hw_set(hw, AMPDU_AGGREGATION);
	ieee80211_hw_set(hw, MFP_CAPABLE);
	ieee80211_hw_set(hw, SIGNAL_DBM);
2770
	ieee80211_hw_set(hw, SUPPORTS_PS);
2771
	ieee80211_hw_set(hw, TDLS_WIDER_BW);
2772
	if (rctbl)
2773
		ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2774

2775 2776
	hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
			    WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2777 2778
			    WIPHY_FLAG_AP_UAPSD |
			    WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2779 2780 2781
	hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
			       NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
			       NL80211_FEATURE_STATIC_SMPS |
2782 2783
			       NL80211_FEATURE_DYNAMIC_SMPS |
			       NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2784
	wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2785

2786 2787 2788 2789
	/* ask mac80211 to reserve space for magic */
	hw->vif_data_size = sizeof(struct hwsim_vif_priv);
	hw->sta_data_size = sizeof(struct hwsim_sta_priv);
	hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2790

2791 2792 2793 2794 2795
	memcpy(data->channels_2ghz, hwsim_channels_2ghz,
		sizeof(hwsim_channels_2ghz));
	memcpy(data->channels_5ghz, hwsim_channels_5ghz,
		sizeof(hwsim_channels_5ghz));
	memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2796

2797
	for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2798
		struct ieee80211_supported_band *sband = &data->bands[band];
I
Ilan Peer 已提交
2799 2800 2801

		sband->band = band;

2802
		switch (band) {
2803
		case NL80211_BAND_2GHZ:
2804 2805 2806 2807 2808
			sband->channels = data->channels_2ghz;
			sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
			sband->bitrates = data->rates;
			sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
			break;
2809
		case NL80211_BAND_5GHZ:
2810 2811 2812 2813
			sband->channels = data->channels_5ghz;
			sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
			sband->bitrates = data->rates + 4;
			sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825

			sband->vht_cap.vht_supported = true;
			sband->vht_cap.cap =
				IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
				IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
				IEEE80211_VHT_CAP_RXLDPC |
				IEEE80211_VHT_CAP_SHORT_GI_80 |
				IEEE80211_VHT_CAP_SHORT_GI_160 |
				IEEE80211_VHT_CAP_TXSTBC |
				IEEE80211_VHT_CAP_RXSTBC_4 |
				IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
			sband->vht_cap.vht_mcs.rx_mcs_map =
2826 2827
				cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2828
					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2829 2830
					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2831 2832
					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2833
					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2834 2835
			sband->vht_cap.vht_mcs.tx_mcs_map =
				sband->vht_cap.vht_mcs.rx_mcs_map;
2836 2837 2838 2839
			break;
		default:
			continue;
		}
2840

2841 2842 2843
		sband->ht_cap.ht_supported = true;
		sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
				    IEEE80211_HT_CAP_GRN_FLD |
B
Ben Greear 已提交
2844
				    IEEE80211_HT_CAP_SGI_20 |
2845 2846 2847 2848 2849 2850 2851 2852 2853
				    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;
2854

I
Ilan Peer 已提交
2855 2856
		mac80211_hswim_he_capab(sband);

2857 2858
		hw->wiphy->bands[band] = sband;
	}
2859

2860 2861 2862
	/* By default all radios belong to the first group */
	data->group = 1;
	mutex_init(&data->mutex);
2863

2864
	data->netgroup = hwsim_net_get_netgroup(net);
2865
	data->wmediumd = hwsim_net_get_wmediumd(net);
2866

2867 2868 2869
	/* Enable frame retransmissions for lossy channels */
	hw->max_rates = 4;
	hw->max_rate_tries = 11;
2870

2871 2872 2873 2874 2875 2876
	hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
	hw->wiphy->n_vendor_commands =
		ARRAY_SIZE(mac80211_hwsim_vendor_commands);
	hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
	hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);

2877
	if (param->reg_strict)
2878
		hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2879
	if (param->regd) {
2880
		data->regd = param->regd;
2881
		hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2882
		wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2883 2884 2885
		/* give the regulatory workqueue a chance to run */
		schedule_timeout_interruptible(1);
	}
2886

2887
	if (param->no_vif)
2888
		ieee80211_hw_set(hw, NO_AUTO_VIF);
2889

2890 2891
	wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);

2892 2893 2894 2895
	tasklet_hrtimer_init(&data->beacon_timer,
			     mac80211_hwsim_beacon,
			     CLOCK_MONOTONIC, HRTIMER_MODE_ABS);

2896 2897
	err = ieee80211_register_hw(hw);
	if (err < 0) {
2898
		pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2899 2900 2901
		       err);
		goto failed_hw;
	}
2902

2903
	wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2904

2905 2906 2907
	if (param->reg_alpha2) {
		data->alpha2[0] = param->reg_alpha2[0];
		data->alpha2[1] = param->reg_alpha2[1];
2908
		regulatory_hint(hw->wiphy, param->reg_alpha2);
2909
	}
2910

2911 2912 2913 2914
	data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
	debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
	debugfs_create_file("group", 0666, data->debugfs, data,
			    &hwsim_fops_group);
2915
	if (!data->use_chanctx)
2916 2917 2918
		debugfs_create_file("dfs_simulate_radar", 0222,
				    data->debugfs,
				    data, &hwsim_simulate_radar);
2919

2920
	spin_lock_bh(&hwsim_radio_lock);
2921 2922 2923
	err = rhashtable_insert_fast(&hwsim_radios_rht, &data->rht,
				     hwsim_rht_params);
	if (err < 0) {
2924 2925 2926 2927 2928
		if (info) {
			GENL_SET_ERR_MSG(info, "perm addr already present");
			NL_SET_BAD_ATTR(info->extack,
					info->attrs[HWSIM_ATTR_PERM_ADDR]);
		}
2929 2930 2931 2932
		spin_unlock_bh(&hwsim_radio_lock);
		goto failed_final_insert;
	}

2933
	list_add_tail(&data->list, &hwsim_radios);
2934
	hwsim_radios_generation++;
2935
	spin_unlock_bh(&hwsim_radio_lock);
2936

2937
	hwsim_mcast_new_radio(idx, info, param);
2938

2939
	return idx;
2940

2941 2942 2943
failed_final_insert:
	debugfs_remove_recursive(data->debugfs);
	ieee80211_unregister_hw(data->hw);
2944
failed_hw:
2945 2946
	device_release_driver(data->dev);
failed_bind:
2947 2948 2949 2950 2951
	device_unregister(data->dev);
failed_drvdata:
	ieee80211_free_hw(hw);
failed:
	return err;
2952 2953
}

2954 2955
static void hwsim_mcast_del_radio(int id, const char *hwname,
				  struct genl_info *info)
2956
{
2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973
	struct sk_buff *skb;
	void *data;
	int ret;

	skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
	if (!skb)
		return;

	data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
			   HWSIM_CMD_DEL_RADIO);
	if (!data)
		goto error;

	ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
	if (ret < 0)
		goto error;

2974 2975 2976 2977
	ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
		      hwname);
	if (ret < 0)
		goto error;
2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993

	genlmsg_end(skb, data);

	hwsim_mcast_config_msg(skb, info);

	return;

error:
	nlmsg_free(skb);
}

static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
				     const char *hwname,
				     struct genl_info *info)
{
	hwsim_mcast_del_radio(data->idx, hwname, info);
2994 2995 2996 2997 2998
	debugfs_remove_recursive(data->debugfs);
	ieee80211_unregister_hw(data->hw);
	device_release_driver(data->dev);
	device_unregister(data->dev);
	ieee80211_free_hw(data->hw);
2999 3000
}

3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015
static int mac80211_hwsim_get_radio(struct sk_buff *skb,
				    struct mac80211_hwsim_data *data,
				    u32 portid, u32 seq,
				    struct netlink_callback *cb, int flags)
{
	void *hdr;
	struct hwsim_new_radio_params param = { };
	int res = -EMSGSIZE;

	hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
			  HWSIM_CMD_GET_RADIO);
	if (!hdr)
		return -EMSGSIZE;

	if (cb)
M
Michal Kubecek 已提交
3016
		genl_dump_check_consistent(cb, hdr);
3017

3018 3019 3020
	if (data->alpha2[0] && data->alpha2[1])
		param.reg_alpha2 = data->alpha2;

3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033
	param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
					REGULATORY_STRICT_REG);
	param.p2p_device = !!(data->hw->wiphy->interface_modes &
					BIT(NL80211_IFTYPE_P2P_DEVICE));
	param.use_chanctx = data->use_chanctx;
	param.regd = data->regd;
	param.channels = data->channels;
	param.hwname = wiphy_name(data->hw->wiphy);

	res = append_radio_msg(skb, data->idx, &param);
	if (res < 0)
		goto out_err;

3034 3035
	genlmsg_end(skb, hdr);
	return 0;
3036 3037 3038 3039 3040 3041

out_err:
	genlmsg_cancel(skb, hdr);
	return res;
}

3042
static void mac80211_hwsim_free(void)
3043
{
3044
	struct mac80211_hwsim_data *data;
3045

3046 3047 3048 3049 3050 3051
	spin_lock_bh(&hwsim_radio_lock);
	while ((data = list_first_entry_or_null(&hwsim_radios,
						struct mac80211_hwsim_data,
						list))) {
		list_del(&data->list);
		spin_unlock_bh(&hwsim_radio_lock);
3052 3053
		mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
					 NULL);
3054
		spin_lock_bh(&hwsim_radio_lock);
3055
	}
3056 3057
	spin_unlock_bh(&hwsim_radio_lock);
	class_destroy(hwsim_class);
3058 3059
}

3060 3061 3062 3063 3064
static const struct net_device_ops hwsim_netdev_ops = {
	.ndo_start_xmit 	= hwsim_mon_xmit,
	.ndo_set_mac_address 	= eth_mac_addr,
	.ndo_validate_addr	= eth_validate_addr,
};
D
Daniel Wagner 已提交
3065

3066
static void hwsim_mon_setup(struct net_device *dev)
D
Daniel Wagner 已提交
3067
{
3068
	dev->netdev_ops = &hwsim_netdev_ops;
3069
	dev->needs_free_netdev = true;
3070
	ether_setup(dev);
3071
	dev->priv_flags |= IFF_NO_QUEUE;
3072
	dev->type = ARPHRD_IEEE80211_RADIOTAP;
3073
	eth_zero_addr(dev->dev_addr);
3074
	dev->dev_addr[0] = 0x12;
D
Daniel Wagner 已提交
3075 3076
}

3077
static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
3078
{
3079 3080 3081
	return rhashtable_lookup_fast(&hwsim_radios_rht,
				      addr,
				      hwsim_rht_params);
3082 3083
}

3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097
static void hwsim_register_wmediumd(struct net *net, u32 portid)
{
	struct mac80211_hwsim_data *data;

	hwsim_net_set_wmediumd(net, portid);

	spin_lock_bh(&hwsim_radio_lock);
	list_for_each_entry(data, &hwsim_radios, list) {
		if (data->netgroup == hwsim_net_get_netgroup(net))
			data->wmediumd = portid;
	}
	spin_unlock_bh(&hwsim_radio_lock);
}

3098 3099 3100 3101 3102 3103 3104 3105
static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
					   struct genl_info *info)
{

	struct ieee80211_hdr *hdr;
	struct mac80211_hwsim_data *data2;
	struct ieee80211_tx_info *txi;
	struct hwsim_tx_rate *tx_attempts;
3106
	u64 ret_skb_cookie;
3107
	struct sk_buff *skb, *tmp;
3108
	const u8 *src;
3109 3110 3111 3112 3113
	unsigned int hwsim_flags;
	int i;
	bool found = false;

	if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
3114 3115
	    !info->attrs[HWSIM_ATTR_FLAGS] ||
	    !info->attrs[HWSIM_ATTR_COOKIE] ||
3116
	    !info->attrs[HWSIM_ATTR_SIGNAL] ||
3117
	    !info->attrs[HWSIM_ATTR_TX_INFO])
3118 3119
		goto out;

3120
	src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
3121
	hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
3122
	ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
3123 3124

	data2 = get_hwsim_data_ref_from_addr(src);
3125
	if (!data2)
3126 3127
		goto out;

3128 3129 3130 3131 3132 3133
	if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
		goto out;

	if (info->snd_portid != data2->wmediumd)
		goto out;

3134 3135
	/* look for the skb matching the cookie passed back from user */
	skb_queue_walk_safe(&data2->pending, skb, tmp) {
3136 3137 3138 3139 3140 3141
		u64 skb_cookie;

		txi = IEEE80211_SKB_CB(skb);
		skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];

		if (skb_cookie == ret_skb_cookie) {
3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173
			skb_unlink(skb, &data2->pending);
			found = true;
			break;
		}
	}

	/* not found */
	if (!found)
		goto out;

	/* Tx info received because the frame was broadcasted on user space,
	 so we get all the necessary info: tx attempts and skb control buff */

	tx_attempts = (struct hwsim_tx_rate *)nla_data(
		       info->attrs[HWSIM_ATTR_TX_INFO]);

	/* now send back TX status */
	txi = IEEE80211_SKB_CB(skb);

	ieee80211_tx_info_clear_status(txi);

	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
		txi->status.rates[i].idx = tx_attempts[i].idx;
		txi->status.rates[i].count = tx_attempts[i].count;
	}

	txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);

	if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
	   (hwsim_flags & HWSIM_TX_STAT_ACK)) {
		if (skb->len >= 16) {
			hdr = (struct ieee80211_hdr *) skb->data;
3174
			mac80211_hwsim_monitor_ack(data2->channel,
3175
						   hdr->addr2);
3176
		}
3177
		txi->flags |= IEEE80211_TX_STAT_ACK;
3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188
	}
	ieee80211_tx_status_irqsafe(data2->hw, skb);
	return 0;
out:
	return -EINVAL;

}

static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
					  struct genl_info *info)
{
3189
	struct mac80211_hwsim_data *data2;
3190
	struct ieee80211_rx_status rx_status;
3191
	const u8 *dst;
3192
	int frame_data_len;
3193
	void *frame_data;
3194 3195 3196
	struct sk_buff *skb = NULL;

	if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3197 3198 3199
	    !info->attrs[HWSIM_ATTR_FRAME] ||
	    !info->attrs[HWSIM_ATTR_RX_RATE] ||
	    !info->attrs[HWSIM_ATTR_SIGNAL])
3200 3201
		goto out;

3202
	dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3203
	frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3204
	frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3205 3206 3207 3208 3209 3210

	/* Allocate new skb here */
	skb = alloc_skb(frame_data_len, GFP_KERNEL);
	if (skb == NULL)
		goto err;

3211
	if (frame_data_len > IEEE80211_MAX_DATA_LEN)
3212 3213
		goto err;

3214
	/* Copy the data */
3215
	skb_put_data(skb, frame_data, frame_data_len);
3216

3217 3218
	data2 = get_hwsim_data_ref_from_addr(dst);
	if (!data2)
3219 3220
		goto out;

3221 3222 3223 3224 3225 3226
	if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
		goto out;

	if (info->snd_portid != data2->wmediumd)
		goto out;

3227 3228
	/* check if radio is configured properly */

3229
	if (data2->idle || !data2->started)
3230 3231
		goto out;

3232
	/* A frame is received from user space */
3233
	memset(&rx_status, 0, sizeof(rx_status));
3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252
	if (info->attrs[HWSIM_ATTR_FREQ]) {
		/* throw away off-channel packets, but allow both the temporary
		 * ("hw" scan/remain-on-channel) and regular channel, since the
		 * internal datapath also allows this
		 */
		mutex_lock(&data2->mutex);
		rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);

		if (rx_status.freq != data2->channel->center_freq &&
		    (!data2->tmp_chan ||
		     rx_status.freq != data2->tmp_chan->center_freq)) {
			mutex_unlock(&data2->mutex);
			goto out;
		}
		mutex_unlock(&data2->mutex);
	} else {
		rx_status.freq = data2->channel->center_freq;
	}

3253 3254 3255 3256 3257
	rx_status.band = data2->channel->band;
	rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
	rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);

	memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3258 3259
	data2->rx_pkts++;
	data2->rx_bytes += skb->len;
3260 3261 3262 3263
	ieee80211_rx_irqsafe(data2->hw, skb);

	return 0;
err:
3264
	pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3265 3266 3267 3268 3269 3270 3271 3272
out:
	dev_kfree_skb(skb);
	return -EINVAL;
}

static int hwsim_register_received_nl(struct sk_buff *skb_2,
				      struct genl_info *info)
{
3273
	struct net *net = genl_info_net(info);
3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289
	struct mac80211_hwsim_data *data;
	int chans = 1;

	spin_lock_bh(&hwsim_radio_lock);
	list_for_each_entry(data, &hwsim_radios, list)
		chans = max(chans, data->channels);
	spin_unlock_bh(&hwsim_radio_lock);

	/* In the future we should revise the userspace API and allow it
	 * to set a flag that it does support multi-channel, then we can
	 * let this pass conditionally on the flag.
	 * For current userspace, prohibit it since it won't work right.
	 */
	if (chans > 1)
		return -EOPNOTSUPP;

3290
	if (hwsim_net_get_wmediumd(net))
3291
		return -EBUSY;
3292

3293
	hwsim_register_wmediumd(net, info->snd_portid);
3294

3295
	pr_debug("mac80211_hwsim: received a REGISTER, "
3296
	       "switching to wmediumd mode with pid %d\n", info->snd_portid);
3297 3298 3299 3300

	return 0;
}

3301
static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3302
{
3303
	struct hwsim_new_radio_params param = { 0 };
3304
	const char *hwname = NULL;
3305
	int ret;
3306 3307 3308 3309 3310 3311

	param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
	param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
	param.channels = channels;
	param.destroy_on_close =
		info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3312 3313

	if (info->attrs[HWSIM_ATTR_CHANNELS])
3314
		param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3315

3316 3317 3318 3319 3320
	if (param.channels < 1) {
		GENL_SET_ERR_MSG(info, "must have at least one channel");
		return -EINVAL;
	}

3321 3322 3323 3324 3325
	if (param.channels > CFG80211_MAX_NUM_DIFFERENT_CHANNELS) {
		GENL_SET_ERR_MSG(info, "too many channels specified");
		return -EINVAL;
	}

3326
	if (info->attrs[HWSIM_ATTR_NO_VIF])
3327
		param.no_vif = true;
3328

3329 3330 3331 3332 3333 3334 3335 3336
	if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
		hwname = kasprintf(GFP_KERNEL, "%.*s",
				   nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
				   (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
		if (!hwname)
			return -ENOMEM;
		param.hwname = hwname;
	}
3337

3338
	if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3339
		param.use_chanctx = true;
3340
	else
3341
		param.use_chanctx = (param.channels > 1);
3342

3343
	if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3344 3345
		param.reg_alpha2 =
			nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3346 3347 3348 3349

	if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
		u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);

3350 3351
		if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom)) {
			kfree(hwname);
3352
			return -EINVAL;
3353
		}
3354 3355 3356

		idx = array_index_nospec(idx,
					 ARRAY_SIZE(hwsim_world_regdom_custom));
3357
		param.regd = hwsim_world_regdom_custom[idx];
3358 3359
	}

3360 3361 3362 3363 3364 3365
	if (info->attrs[HWSIM_ATTR_PERM_ADDR]) {
		if (!is_valid_ether_addr(
				nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]))) {
			GENL_SET_ERR_MSG(info,"MAC is no valid source addr");
			NL_SET_BAD_ATTR(info->extack,
					info->attrs[HWSIM_ATTR_PERM_ADDR]);
3366
			kfree(hwname);
3367 3368 3369 3370 3371 3372 3373
			return -EINVAL;
		}


		param.perm_addr = nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]);
	}

3374 3375 3376
	ret = mac80211_hwsim_new_radio(info, &param);
	kfree(hwname);
	return ret;
3377 3378
}

3379
static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3380 3381
{
	struct mac80211_hwsim_data *data;
3382 3383
	s64 idx = -1;
	const char *hwname = NULL;
3384

3385
	if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3386
		idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3387 3388 3389 3390 3391 3392 3393
	} else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
		hwname = kasprintf(GFP_KERNEL, "%.*s",
				   nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
				   (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
		if (!hwname)
			return -ENOMEM;
	} else
3394 3395 3396 3397
		return -EINVAL;

	spin_lock_bh(&hwsim_radio_lock);
	list_for_each_entry(data, &hwsim_radios, list) {
3398 3399 3400 3401
		if (idx >= 0) {
			if (data->idx != idx)
				continue;
		} else {
3402 3403
			if (!hwname ||
			    strcmp(hwname, wiphy_name(data->hw->wiphy)))
3404 3405 3406
				continue;
		}

3407 3408 3409
		if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
			continue;

3410
		list_del(&data->list);
3411 3412
		rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
				       hwsim_rht_params);
3413
		hwsim_radios_generation++;
3414
		spin_unlock_bh(&hwsim_radio_lock);
3415 3416
		mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
					 info);
3417
		kfree(hwname);
3418 3419 3420 3421
		return 0;
	}
	spin_unlock_bh(&hwsim_radio_lock);

3422
	kfree(hwname);
3423
	return -ENODEV;
3424 3425
}

3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440
static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
{
	struct mac80211_hwsim_data *data;
	struct sk_buff *skb;
	int idx, res = -ENODEV;

	if (!info->attrs[HWSIM_ATTR_RADIO_ID])
		return -EINVAL;
	idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);

	spin_lock_bh(&hwsim_radio_lock);
	list_for_each_entry(data, &hwsim_radios, list) {
		if (data->idx != idx)
			continue;

3441 3442 3443
		if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
			continue;

3444
		skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456
		if (!skb) {
			res = -ENOMEM;
			goto out_err;
		}

		res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
					       info->snd_seq, NULL, 0);
		if (res < 0) {
			nlmsg_free(skb);
			goto out_err;
		}

3457
		res = genlmsg_reply(skb, info);
3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469
		break;
	}

out_err:
	spin_unlock_bh(&hwsim_radio_lock);

	return res;
}

static int hwsim_dump_radio_nl(struct sk_buff *skb,
			       struct netlink_callback *cb)
{
3470
	int last_idx = cb->args[0] - 1;
3471
	struct mac80211_hwsim_data *data = NULL;
3472 3473
	int res = 0;
	void *hdr;
3474 3475

	spin_lock_bh(&hwsim_radio_lock);
3476
	cb->seq = hwsim_radios_generation;
3477

3478
	if (last_idx >= hwsim_radio_idx-1)
3479 3480 3481
		goto done;

	list_for_each_entry(data, &hwsim_radios, list) {
3482
		if (data->idx <= last_idx)
3483 3484
			continue;

3485 3486 3487
		if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
			continue;

3488 3489 3490 3491 3492 3493 3494
		res = mac80211_hwsim_get_radio(skb, data,
					       NETLINK_CB(cb->skb).portid,
					       cb->nlh->nlmsg_seq, cb,
					       NLM_F_MULTI);
		if (res < 0)
			break;

3495
		last_idx = data->idx;
3496 3497
	}

3498
	cb->args[0] = last_idx + 1;
3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509

	/* list changed, but no new element sent, set interrupted flag */
	if (skb->len == 0 && cb->prev_seq && cb->seq != cb->prev_seq) {
		hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid,
				  cb->nlh->nlmsg_seq, &hwsim_genl_family,
				  NLM_F_MULTI, HWSIM_CMD_GET_RADIO);
		if (!hdr)
			res = -EMSGSIZE;
		genl_dump_check_consistent(cb, hdr);
		genlmsg_end(skb, hdr);
	}
3510 3511 3512

done:
	spin_unlock_bh(&hwsim_radio_lock);
3513
	return res ?: skb->len;
3514 3515
}

3516
/* Generic Netlink operations array */
3517
static const struct genl_ops hwsim_ops[] = {
3518 3519 3520 3521
	{
		.cmd = HWSIM_CMD_REGISTER,
		.policy = hwsim_genl_policy,
		.doit = hwsim_register_received_nl,
3522
		.flags = GENL_UNS_ADMIN_PERM,
3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533
	},
	{
		.cmd = HWSIM_CMD_FRAME,
		.policy = hwsim_genl_policy,
		.doit = hwsim_cloned_frame_received_nl,
	},
	{
		.cmd = HWSIM_CMD_TX_INFO_FRAME,
		.policy = hwsim_genl_policy,
		.doit = hwsim_tx_info_frame_received_nl,
	},
3534
	{
3535
		.cmd = HWSIM_CMD_NEW_RADIO,
3536
		.policy = hwsim_genl_policy,
3537
		.doit = hwsim_new_radio_nl,
3538
		.flags = GENL_UNS_ADMIN_PERM,
3539 3540
	},
	{
3541
		.cmd = HWSIM_CMD_DEL_RADIO,
3542
		.policy = hwsim_genl_policy,
3543
		.doit = hwsim_del_radio_nl,
3544
		.flags = GENL_UNS_ADMIN_PERM,
3545
	},
3546 3547 3548 3549 3550 3551
	{
		.cmd = HWSIM_CMD_GET_RADIO,
		.policy = hwsim_genl_policy,
		.doit = hwsim_get_radio_nl,
		.dumpit = hwsim_dump_radio_nl,
	},
3552 3553
};

3554
static struct genl_family hwsim_genl_family __ro_after_init = {
3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565
	.name = "MAC80211_HWSIM",
	.version = 1,
	.maxattr = HWSIM_ATTR_MAX,
	.netnsok = true,
	.module = THIS_MODULE,
	.ops = hwsim_ops,
	.n_ops = ARRAY_SIZE(hwsim_ops),
	.mcgrps = hwsim_mcgrps,
	.n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
};

3566 3567 3568
static void remove_user_radios(u32 portid)
{
	struct mac80211_hwsim_data *entry, *tmp;
3569
	LIST_HEAD(list);
3570 3571 3572 3573

	spin_lock_bh(&hwsim_radio_lock);
	list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
		if (entry->destroy_on_close && entry->portid == portid) {
3574
			list_move(&entry->list, &list);
3575 3576
			rhashtable_remove_fast(&hwsim_radios_rht, &entry->rht,
					       hwsim_rht_params);
3577
			hwsim_radios_generation++;
3578 3579 3580
		}
	}
	spin_unlock_bh(&hwsim_radio_lock);
3581 3582 3583 3584 3585 3586

	list_for_each_entry_safe(entry, tmp, &list, list) {
		list_del(&entry->list);
		mac80211_hwsim_del_radio(entry, wiphy_name(entry->hw->wiphy),
					 NULL);
	}
3587 3588
}

3589 3590 3591 3592 3593 3594 3595 3596 3597
static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
					 unsigned long state,
					 void *_notify)
{
	struct netlink_notify *notify = _notify;

	if (state != NETLINK_URELEASE)
		return NOTIFY_DONE;

3598 3599
	remove_user_radios(notify->portid);

3600
	if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3601 3602
		printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
		       " socket, switching to perfect channel medium\n");
3603
		hwsim_register_wmediumd(notify->net, 0);
3604 3605 3606 3607 3608 3609 3610 3611 3612
	}
	return NOTIFY_DONE;

}

static struct notifier_block hwsim_netlink_notifier = {
	.notifier_call = mac80211_hwsim_netlink_notify,
};

3613
static int __init hwsim_init_netlink(void)
3614 3615
{
	int rc;
3616

3617 3618
	printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");

3619
	rc = genl_register_family(&hwsim_genl_family);
3620 3621 3622 3623
	if (rc)
		goto failure;

	rc = netlink_register_notifier(&hwsim_netlink_notifier);
3624 3625
	if (rc) {
		genl_unregister_family(&hwsim_genl_family);
3626
		goto failure;
3627
	}
3628 3629 3630 3631

	return 0;

failure:
3632
	pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3633 3634 3635
	return -EINVAL;
}

3636 3637
static __net_init int hwsim_init_net(struct net *net)
{
3638
	return hwsim_net_set_netgroup(net);
3639 3640 3641 3642 3643
}

static void __net_exit hwsim_exit_net(struct net *net)
{
	struct mac80211_hwsim_data *data, *tmp;
3644
	LIST_HEAD(list);
3645 3646 3647 3648 3649 3650 3651 3652 3653 3654

	spin_lock_bh(&hwsim_radio_lock);
	list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
		if (!net_eq(wiphy_net(data->hw->wiphy), net))
			continue;

		/* Radios created in init_net are returned to init_net. */
		if (data->netgroup == hwsim_net_get_netgroup(&init_net))
			continue;

3655
		list_move(&data->list, &list);
3656 3657
		rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
				       hwsim_rht_params);
3658
		hwsim_radios_generation++;
3659 3660 3661 3662 3663
	}
	spin_unlock_bh(&hwsim_radio_lock);

	list_for_each_entry_safe(data, tmp, &list, list) {
		list_del(&data->list);
3664 3665 3666
		mac80211_hwsim_del_radio(data,
					 wiphy_name(data->hw->wiphy),
					 NULL);
3667
	}
3668 3669

	ida_simple_remove(&hwsim_netgroup_ida, hwsim_net_get_netgroup(net));
3670 3671 3672 3673 3674 3675 3676 3677 3678
}

static struct pernet_operations hwsim_net_ops = {
	.init = hwsim_init_net,
	.exit = hwsim_exit_net,
	.id   = &hwsim_net_id,
	.size = sizeof(struct hwsim_net),
};

3679 3680 3681 3682 3683
static void hwsim_exit_netlink(void)
{
	/* unregister the notifier */
	netlink_unregister_notifier(&hwsim_netlink_notifier);
	/* unregister the family */
3684
	genl_unregister_family(&hwsim_genl_family);
3685 3686
}

3687 3688
static int __init init_mac80211_hwsim(void)
{
3689
	int i, err;
3690

3691
	if (radios < 0 || radios > 100)
3692 3693
		return -EINVAL;

3694 3695 3696
	if (channels < 1)
		return -EINVAL;

3697
	spin_lock_init(&hwsim_radio_lock);
3698

3699
	hwsim_wq = alloc_workqueue("hwsim_wq", 0, 0);
3700 3701
	if (!hwsim_wq)
		return -ENOMEM;
3702 3703 3704 3705

	err = rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
	if (err)
		goto out_free_wq;
3706

3707
	err = register_pernet_device(&hwsim_net_ops);
3708
	if (err)
3709
		goto out_free_rht;
3710

3711 3712 3713 3714
	err = platform_driver_register(&mac80211_hwsim_driver);
	if (err)
		goto out_unregister_pernet;

3715 3716 3717 3718
	err = hwsim_init_netlink();
	if (err)
		goto out_unregister_driver;

3719
	hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3720 3721
	if (IS_ERR(hwsim_class)) {
		err = PTR_ERR(hwsim_class);
3722
		goto out_exit_netlink;
3723
	}
3724

3725
	for (i = 0; i < radios; i++) {
3726 3727 3728
		struct hwsim_new_radio_params param = { 0 };

		param.channels = channels;
3729

3730 3731
		switch (regtest) {
		case HWSIM_REGTEST_DIFF_COUNTRY:
3732
			if (i < ARRAY_SIZE(hwsim_alpha2s))
3733
				param.reg_alpha2 = hwsim_alpha2s[i];
3734 3735 3736
			break;
		case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
			if (!i)
3737
				param.reg_alpha2 = hwsim_alpha2s[0];
3738 3739
			break;
		case HWSIM_REGTEST_STRICT_ALL:
3740
			param.reg_strict = true;
3741
		case HWSIM_REGTEST_DRIVER_REG_ALL:
3742
			param.reg_alpha2 = hwsim_alpha2s[0];
3743
			break;
3744 3745
		case HWSIM_REGTEST_WORLD_ROAM:
			if (i == 0)
3746
				param.regd = &hwsim_world_regdom_custom_01;
3747 3748
			break;
		case HWSIM_REGTEST_CUSTOM_WORLD:
3749
			param.regd = &hwsim_world_regdom_custom_01;
3750
			break;
3751
		case HWSIM_REGTEST_CUSTOM_WORLD_2:
3752
			if (i == 0)
3753
				param.regd = &hwsim_world_regdom_custom_01;
3754
			else if (i == 1)
3755
				param.regd = &hwsim_world_regdom_custom_02;
3756 3757
			break;
		case HWSIM_REGTEST_STRICT_FOLLOW:
3758
			if (i == 0) {
3759 3760
				param.reg_strict = true;
				param.reg_alpha2 = hwsim_alpha2s[0];
3761
			}
3762 3763
			break;
		case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3764
			if (i == 0) {
3765 3766
				param.reg_strict = true;
				param.reg_alpha2 = hwsim_alpha2s[0];
3767
			} else if (i == 1) {
3768
				param.reg_alpha2 = hwsim_alpha2s[1];
3769
			}
3770 3771
			break;
		case HWSIM_REGTEST_ALL:
3772 3773
			switch (i) {
			case 0:
3774
				param.regd = &hwsim_world_regdom_custom_01;
3775 3776
				break;
			case 1:
3777
				param.regd = &hwsim_world_regdom_custom_02;
3778 3779
				break;
			case 2:
3780
				param.reg_alpha2 = hwsim_alpha2s[0];
3781 3782
				break;
			case 3:
3783
				param.reg_alpha2 = hwsim_alpha2s[1];
3784 3785
				break;
			case 4:
3786 3787
				param.reg_strict = true;
				param.reg_alpha2 = hwsim_alpha2s[2];
3788 3789
				break;
			}
3790 3791 3792 3793 3794
			break;
		default:
			break;
		}

3795 3796 3797 3798
		param.p2p_device = support_p2p_device;
		param.use_chanctx = channels > 1;

		err = mac80211_hwsim_new_radio(NULL, &param);
3799
		if (err < 0)
3800
			goto out_free_radios;
3801 3802
	}

3803 3804
	hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
				 hwsim_mon_setup);
3805 3806
	if (hwsim_mon == NULL) {
		err = -ENOMEM;
3807
		goto out_free_radios;
3808
	}
3809

3810 3811
	rtnl_lock();
	err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3812 3813 3814 3815
	if (err < 0) {
		rtnl_unlock();
		goto out_free_radios;
	}
3816 3817

	err = register_netdevice(hwsim_mon);
3818 3819 3820 3821
	if (err < 0) {
		rtnl_unlock();
		goto out_free_mon;
	}
3822 3823
	rtnl_unlock();

3824 3825
	return 0;

3826
out_free_mon:
3827
	free_netdev(hwsim_mon);
3828
out_free_radios:
3829
	mac80211_hwsim_free();
3830 3831
out_exit_netlink:
	hwsim_exit_netlink();
3832
out_unregister_driver:
3833
	platform_driver_unregister(&mac80211_hwsim_driver);
3834 3835
out_unregister_pernet:
	unregister_pernet_device(&hwsim_net_ops);
3836 3837 3838 3839
out_free_rht:
	rhashtable_destroy(&hwsim_radios_rht);
out_free_wq:
	destroy_workqueue(hwsim_wq);
3840 3841
	return err;
}
3842
module_init(init_mac80211_hwsim);
3843 3844 3845

static void __exit exit_mac80211_hwsim(void)
{
3846
	pr_debug("mac80211_hwsim: unregister radios\n");
3847

3848 3849
	hwsim_exit_netlink();

3850
	mac80211_hwsim_free();
3851 3852
	flush_workqueue(hwsim_wq);

3853
	rhashtable_destroy(&hwsim_radios_rht);
3854
	unregister_netdev(hwsim_mon);
3855
	platform_driver_unregister(&mac80211_hwsim_driver);
3856
	unregister_pernet_device(&hwsim_net_ops);
3857
	destroy_workqueue(hwsim_wq);
3858 3859
}
module_exit(exit_mac80211_hwsim);