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linux/drivers/net/wireless/mac80211_hwsim.c
David S. Miller 3fd0202a0d Merge tag 'master-2014-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next 
John W. Linville says:

====================
pull request: wireless-next 2014-07-25

Please pull this batch of updates intended for the 3.17 stream!

For the mac80211 bits, Johannes says:

"We have a lot of TDLS patches, among them a fix that should make hwsim
tests happy again. The rest, this time, is mostly small fixes."

For the Bluetooth bits, Gustavo says:

"Some more patches for 3.17. The most important change here is the move of
the 6lowpan code to net/6lowpan. It has been agreed with Davem that this
change will go through the bluetooth tree. The rest are mostly clean up and
fixes."

and,

"Here follows some more patches for 3.17. These are mostly fixes to what
we've sent to you before for next merge window."

For the iwlwifi bits, Emmanuel says:

"I have the usual amount of BT Coex stuff. Arik continues to work
on TDLS and Ariej contributes a few things for HS2.0. I added a few
more things to the firmware debugging infrastructure. Eran fixes a
small bug - pretty normal content."

And for the Atheros bits, Kalle says:

"For ath6kl me and Jessica added support for ar6004 hw3.0, our latest
version of ar6004.

For ath10k Janusz added a printout so that it's easier to check what
ath10k kconfig options are enabled. He also added a debugfs file to
configure maximum amsdu and ampdu values. Also we had few fixes as
usual."

On top of that is the usual large batch of various driver updates --
brcmfmac, mwifiex, the TI drivers, and wil6210 all get some action.
Rafał has also been very busy with b43 and related updates.

Also, I pulled the wireless tree into this in order to resolve a
merge conflict...

P.S.  The change to fs/compat_ioctl.c reflects a name change in a
Bluetooth header file...
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-28 17:36:25 -07:00

2732 lines
73 KiB
C
Raw Blame History

/*
* mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
* Copyright (c) 2008, Jouni Malinen <j@w1.fi>
* Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
*
* 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:
* - Add TSF sync and fix IBSS beacon transmission by adding
* competition for "air time" at TBTT
* - RX filtering based on filter configuration (data->rx_filter)
*/
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <net/dst.h>
#include <net/xfrm.h>
#include <net/mac80211.h>
#include <net/ieee80211_radiotap.h>
#include <linux/if_arp.h>
#include <linux/rtnetlink.h>
#include <linux/etherdevice.h>
#include <linux/platform_device.h>
#include <linux/debugfs.h>
#include <linux/module.h>
#include <linux/ktime.h>
#include <net/genetlink.h>
#include "mac80211_hwsim.h"
#define WARN_QUEUE 100
#define MAX_QUEUE 200
MODULE_AUTHOR("Jouni Malinen");
MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
MODULE_LICENSE("GPL");
static u32 wmediumd_portid;
static int radios = 2;
module_param(radios, int, 0444);
MODULE_PARM_DESC(radios, "Number of simulated radios");
static int channels = 1;
module_param(channels, int, 0444);
MODULE_PARM_DESC(channels, "Number of concurrent channels");
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");
static bool rctbl = false;
module_param(rctbl, bool, 0444);
MODULE_PARM_DESC(rctbl, "Handle rate control table");
static bool support_p2p_device = true;
module_param(support_p2p_device, bool, 0444);
MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
/**
* enum hwsim_regtest - the type of regulatory tests we offer
*
* These are the different values you can use for the regtest
* module parameter. This is useful to help test world roaming
* and the driver regulatory_hint() call and combinations of these.
* If you want to do specific alpha2 regulatory domain tests simply
* use the userspace regulatory request as that will be respected as
* well without the need of this module parameter. This is designed
* only for testing the driver regulatory request, world roaming
* and all possible combinations.
*
* @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
* this is the default value.
* @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
* hint, only one driver regulatory hint will be sent as such the
* secondary radios are expected to follow.
* @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
* request with all radios reporting the same regulatory domain.
* @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
* different regulatory domains requests. Expected behaviour is for
* an intersection to occur but each device will still use their
* respective regulatory requested domains. Subsequent radios will
* use the resulting intersection.
* @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
* this by using a custom beacon-capable regulatory domain for the first
* radio. All other device world roam.
* @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
* domain requests. All radios will adhere to this custom world regulatory
* domain.
* @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
* domain requests. The first radio will adhere to the first custom world
* regulatory domain, the second one to the second custom world regulatory
* domain. All other devices will world roam.
* @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
* settings, only the first radio will send a regulatory domain request
* and use strict settings. The rest of the radios are expected to follow.
* @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
* settings. All radios will adhere to this.
* @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
* domain settings, combined with secondary driver regulatory domain
* settings. The first radio will get a strict regulatory domain setting
* using the first driver regulatory request and the second radio will use
* non-strict settings using the second driver regulatory request. All
* other devices should follow the intersection created between the
* first two.
* @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
* at least 6 radios for a complete test. We will test in this order:
* 1 - driver custom world regulatory domain
* 2 - second custom world regulatory domain
* 3 - first driver regulatory domain request
* 4 - second driver regulatory domain request
* 5 - strict regulatory domain settings using the third driver regulatory
* domain request
* 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
* regulatory requests.
*/
enum hwsim_regtest {
HWSIM_REGTEST_DISABLED = 0,
HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
HWSIM_REGTEST_DRIVER_REG_ALL = 2,
HWSIM_REGTEST_DIFF_COUNTRY = 3,
HWSIM_REGTEST_WORLD_ROAM = 4,
HWSIM_REGTEST_CUSTOM_WORLD = 5,
HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
HWSIM_REGTEST_STRICT_FOLLOW = 7,
HWSIM_REGTEST_STRICT_ALL = 8,
HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
HWSIM_REGTEST_ALL = 10,
};
/* Set to one of the HWSIM_REGTEST_* values above */
static int regtest = HWSIM_REGTEST_DISABLED;
module_param(regtest, int, 0444);
MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
static const char *hwsim_alpha2s[] = {
"FI",
"AL",
"US",
"DE",
"JP",
"AL",
};
static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
.n_reg_rules = 4,
.alpha2 = "99",
.reg_rules = {
REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
}
};
static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
.n_reg_rules = 2,
.alpha2 = "99",
.reg_rules = {
REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
REG_RULE(5725-10, 5850+10, 40, 0, 30,
NL80211_RRF_NO_IR),
}
};
static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
&hwsim_world_regdom_custom_01,
&hwsim_world_regdom_custom_02,
};
struct hwsim_vif_priv {
u32 magic;
u8 bssid[ETH_ALEN];
bool assoc;
bool bcn_en;
u16 aid;
};
#define HWSIM_VIF_MAGIC 0x69537748
static inline void hwsim_check_magic(struct ieee80211_vif *vif)
{
struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
WARN(vp->magic != HWSIM_VIF_MAGIC,
"Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
vif, vp->magic, vif->addr, vif->type, vif->p2p);
}
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;
}
struct hwsim_sta_priv {
u32 magic;
};
#define HWSIM_STA_MAGIC 0x6d537749
static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
{
struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
WARN_ON(sp->magic != HWSIM_STA_MAGIC);
}
static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
{
struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
sp->magic = HWSIM_STA_MAGIC;
}
static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
{
struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
sp->magic = 0;
}
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;
}
static struct class *hwsim_class;
static struct net_device *hwsim_mon; /* global monitor netdev */
#define CHAN2G(_freq) { \
.band = IEEE80211_BAND_2GHZ, \
.center_freq = (_freq), \
.hw_value = (_freq), \
.max_power = 20, \
}
#define CHAN5G(_freq) { \
.band = IEEE80211_BAND_5GHZ, \
.center_freq = (_freq), \
.hw_value = (_freq), \
.max_power = 20, \
}
static const struct ieee80211_channel hwsim_channels_2ghz[] = {
CHAN2G(2412), /* Channel 1 */
CHAN2G(2417), /* Channel 2 */
CHAN2G(2422), /* Channel 3 */
CHAN2G(2427), /* Channel 4 */
CHAN2G(2432), /* Channel 5 */
CHAN2G(2437), /* Channel 6 */
CHAN2G(2442), /* Channel 7 */
CHAN2G(2447), /* Channel 8 */
CHAN2G(2452), /* Channel 9 */
CHAN2G(2457), /* Channel 10 */
CHAN2G(2462), /* Channel 11 */
CHAN2G(2467), /* Channel 12 */
CHAN2G(2472), /* Channel 13 */
CHAN2G(2484), /* Channel 14 */
};
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 */
};
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 }
};
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) },
/* must be last, see hwsim_if_comb */
{ .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
};
static const struct ieee80211_iface_limit hwsim_if_dfs_limits[] = {
{ .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
};
static const struct ieee80211_iface_combination hwsim_if_comb[] = {
{
.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,
},
{
.limits = hwsim_if_dfs_limits,
.n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
.max_interfaces = 8,
.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),
}
};
static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
{
.limits = hwsim_if_limits,
.n_limits = ARRAY_SIZE(hwsim_if_limits),
.max_interfaces = 2048,
.num_different_channels = 1,
},
{
.limits = hwsim_if_dfs_limits,
.n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
.max_interfaces = 8,
.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),
}
};
static spinlock_t hwsim_radio_lock;
static struct list_head hwsim_radios;
static int hwsim_radio_idx;
static struct platform_driver mac80211_hwsim_driver = {
.driver = {
.name = "mac80211_hwsim",
.owner = THIS_MODULE,
},
};
struct mac80211_hwsim_data {
struct list_head list;
struct ieee80211_hw *hw;
struct device *dev;
struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
struct ieee80211_iface_combination if_combination;
struct mac_address addresses[2];
int channels, idx;
bool use_chanctx;
struct ieee80211_channel *tmp_chan;
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;
struct ieee80211_channel *channel;
u64 beacon_int /* beacon interval in us */;
unsigned int rx_filter;
bool started, idle, scanning;
struct mutex mutex;
struct tasklet_hrtimer beacon_timer;
enum ps_mode {
PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
} ps;
bool ps_poll_pending;
struct dentry *debugfs;
struct sk_buff_head pending; /* packets pending */
/*
* Only radios in the same group can communicate together (the
* channel has to match too). Each bit represents a group. A
* radio can be in more then one group.
*/
u64 group;
int power_level;
/* difference between this hw's clock and the real clock, in usecs */
s64 tsf_offset;
s64 bcn_delta;
/* absolute beacon transmission time. Used to cover up "tx" delay. */
u64 abs_bcn_ts;
};
struct hwsim_radiotap_hdr {
struct ieee80211_radiotap_header hdr;
__le64 rt_tsft;
u8 rt_flags;
u8 rt_rate;
__le16 rt_channel;
__le16 rt_chbitmask;
} __packed;
struct hwsim_radiotap_ack_hdr {
struct ieee80211_radiotap_header hdr;
u8 rt_flags;
u8 pad;
__le16 rt_channel;
__le16 rt_chbitmask;
} __packed;
/* MAC80211_HWSIM netlinf family */
static struct genl_family hwsim_genl_family = {
.id = GENL_ID_GENERATE,
.hdrsize = 0,
.name = "MAC80211_HWSIM",
.version = 1,
.maxattr = HWSIM_ATTR_MAX,
};
/* MAC80211_HWSIM netlink policy */
static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
[HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
[HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
[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,
.len = IEEE80211_TX_MAX_RATES *
sizeof(struct hwsim_tx_rate)},
[HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
[HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
[HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
[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 },
[HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
};
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;
wiphy_debug(data->hw->wiphy,
"%s: send PS-Poll to %pM for aid %d\n",
__func__, vp->bssid, vp->aid);
skb = dev_alloc_skb(sizeof(*pspoll));
if (!skb)
return;
pspoll = (void *) skb_put(skb, sizeof(*pspoll));
pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
IEEE80211_STYPE_PSPOLL |
IEEE80211_FCTL_PM);
pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
memcpy(pspoll->ta, mac, ETH_ALEN);
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;
wiphy_debug(data->hw->wiphy,
"%s: send data::nullfunc to %pM ps=%d\n",
__func__, vp->bssid, ps);
skb = dev_alloc_skb(sizeof(*hdr));
if (!skb)
return;
hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
IEEE80211_STYPE_NULLFUNC |
(ps ? IEEE80211_FCTL_PM : 0));
hdr->duration_id = cpu_to_le16(0);
memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
memcpy(hdr->addr2, mac, ETH_ALEN);
memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
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;
old_ps = data->ps;
data->ps = val;
if (val == PS_MANUAL_POLL) {
ieee80211_iterate_active_interfaces(data->hw,
IEEE80211_IFACE_ITER_NORMAL,
hwsim_send_ps_poll, data);
data->ps_poll_pending = true;
} else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
ieee80211_iterate_active_interfaces(data->hw,
IEEE80211_IFACE_ITER_NORMAL,
hwsim_send_nullfunc_ps,
data);
} else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
ieee80211_iterate_active_interfaces(data->hw,
IEEE80211_IFACE_ITER_NORMAL,
hwsim_send_nullfunc_no_ps,
data);
}
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");
static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
struct net_device *dev)
{
/* TODO: allow packet injection */
dev_kfree_skb(skb);
return NETDEV_TX_OK;
}
static inline u64 mac80211_hwsim_get_tsf_raw(void)
{
return ktime_to_us(ktime_get_real());
}
static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
{
u64 now = mac80211_hwsim_get_tsf_raw();
return cpu_to_le64(now + data->tsf_offset);
}
static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
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;
u64 now = mac80211_hwsim_get_tsf(hw, vif);
u32 bcn_int = data->beacon_int;
u64 delta = abs64(tsf - now);
/* adjust after beaconing with new timestamp at old TBTT */
if (tsf > now) {
data->tsf_offset += delta;
data->bcn_delta = do_div(delta, bcn_int);
} else {
data->tsf_offset -= delta;
data->bcn_delta = -do_div(delta, bcn_int);
}
}
static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
struct sk_buff *tx_skb,
struct ieee80211_channel *chan)
{
struct mac80211_hwsim_data *data = hw->priv;
struct sk_buff *skb;
struct hwsim_radiotap_hdr *hdr;
u16 flags;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
if (!netif_running(hwsim_mon))
return;
skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
if (skb == NULL)
return;
hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
hdr->hdr.it_pad = 0;
hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
(1 << IEEE80211_RADIOTAP_RATE) |
(1 << IEEE80211_RADIOTAP_TSFT) |
(1 << IEEE80211_RADIOTAP_CHANNEL));
hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
hdr->rt_flags = 0;
hdr->rt_rate = txrate->bitrate / 5;
hdr->rt_channel = cpu_to_le16(chan->center_freq);
flags = IEEE80211_CHAN_2GHZ;
if (txrate->flags & IEEE80211_RATE_ERP_G)
flags |= IEEE80211_CHAN_OFDM;
else
flags |= IEEE80211_CHAN_CCK;
hdr->rt_chbitmask = cpu_to_le16(flags);
skb->dev = hwsim_mon;
skb_set_mac_header(skb, 0);
skb->ip_summed = CHECKSUM_UNNECESSARY;
skb->pkt_type = PACKET_OTHERHOST;
skb->protocol = htons(ETH_P_802_2);
memset(skb->cb, 0, sizeof(skb->cb));
netif_rx(skb);
}
static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
const u8 *addr)
{
struct sk_buff *skb;
struct hwsim_radiotap_ack_hdr *hdr;
u16 flags;
struct ieee80211_hdr *hdr11;
if (!netif_running(hwsim_mon))
return;
skb = dev_alloc_skb(100);
if (skb == NULL)
return;
hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
hdr->hdr.it_pad = 0;
hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
(1 << IEEE80211_RADIOTAP_CHANNEL));
hdr->rt_flags = 0;
hdr->pad = 0;
hdr->rt_channel = cpu_to_le16(chan->center_freq);
flags = IEEE80211_CHAN_2GHZ;
hdr->rt_chbitmask = cpu_to_le16(flags);
hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
IEEE80211_STYPE_ACK);
hdr11->duration_id = cpu_to_le16(0);
memcpy(hdr11->addr1, addr, ETH_ALEN);
skb->dev = hwsim_mon;
skb_set_mac_header(skb, 0);
skb->ip_summed = CHECKSUM_UNNECESSARY;
skb->pkt_type = PACKET_OTHERHOST;
skb->protocol = htons(ETH_P_802_2);
memset(skb->cb, 0, sizeof(skb->cb));
netif_rx(skb);
}
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,
};
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;
}
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 &&
mac80211_hwsim_addr_match(data, skb->data + 4)) {
data->ps_poll_pending = false;
return true;
}
return false;
}
return true;
}
static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
struct sk_buff *my_skb,
int dst_portid)
{
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];
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 */
while (skb_queue_len(&data->pending) >= WARN_QUEUE)
skb_dequeue(&data->pending);
}
skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
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) {
printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
goto nla_put_failure;
}
if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
ETH_ALEN, data->addresses[1].addr))
goto nla_put_failure;
/* We get the skb->data */
if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
goto nla_put_failure;
/* 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;
if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
goto nla_put_failure;
/* 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;
tx_attempts[i].count = info->status.rates[i].count;
}
if (nla_put(skb, HWSIM_ATTR_TX_INFO,
sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
tx_attempts))
goto nla_put_failure;
/* We create a cookie to identify this skb */
if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
goto nla_put_failure;
genlmsg_end(skb, msg_head);
genlmsg_unicast(&init_net, skb, dst_portid);
/* Enqueue the packet */
skb_queue_tail(&data->pending, my_skb);
return;
nla_put_failure:
printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
}
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,
rcu_dereference(vif->chanctx_conf)->def.chan))
return;
data->receive = true;
}
static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
struct sk_buff *skb,
struct ieee80211_channel *chan)
{
struct mac80211_hwsim_data *data = hw->priv, *data2;
bool ack = false;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_rx_status rx_status;
u64 now;
memset(&rx_status, 0, sizeof(rx_status));
rx_status.flag |= RX_FLAG_MACTIME_START;
rx_status.freq = chan->center_freq;
rx_status.band = chan->band;
if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
rx_status.rate_idx =
ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
rx_status.vht_nss =
ieee80211_rate_get_vht_nss(&info->control.rates[0]);
rx_status.flag |= RX_FLAG_VHT;
} else {
rx_status.rate_idx = info->control.rates[0].idx;
if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
rx_status.flag |= RX_FLAG_HT;
}
if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
rx_status.flag |= RX_FLAG_40MHZ;
if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
rx_status.flag |= RX_FLAG_SHORT_GI;
/* TODO: simulate real signal strength (and optional packet loss) */
rx_status.signal = data->power_level - 50;
if (data->ps != PS_DISABLED)
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
/* release the skb's source info */
skb_orphan(skb);
skb_dst_drop(skb);
skb->mark = 0;
secpath_reset(skb);
nf_reset(skb);
/*
* 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();
/* Copy skb to all enabled radios that are on the current frequency */
spin_lock(&hwsim_radio_lock);
list_for_each_entry(data2, &hwsim_radios, list) {
struct sk_buff *nskb;
struct tx_iter_data tx_iter_data = {
.receive = false,
.channel = chan,
};
if (data == data2)
continue;
if (!data2->started || (data2->idle && !data2->tmp_chan) ||
!hwsim_ps_rx_ok(data2, skb))
continue;
if (!(data->group & data2->group))
continue;
if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
!hwsim_chans_compat(chan, data2->channel)) {
ieee80211_iterate_active_interfaces_atomic(
data2->hw, IEEE80211_IFACE_ITER_NORMAL,
mac80211_hwsim_tx_iter, &tx_iter_data);
if (!tx_iter_data.receive)
continue;
}
/*
* reserve some space for our vendor and the normal
* radiotap header, since we're copying anyway
*/
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;
}
if (mac80211_hwsim_addr_match(data2, hdr->addr1))
ack = true;
rx_status.mactime = now + data2->tsf_offset;
memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
ieee80211_rx_irqsafe(data2->hw, nskb);
}
spin_unlock(&hwsim_radio_lock);
return ack;
}
static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
struct ieee80211_tx_control *control,
struct sk_buff *skb)
{
struct mac80211_hwsim_data *data = hw->priv;
struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
struct ieee80211_chanctx_conf *chanctx_conf;
struct ieee80211_channel *channel;
bool ack;
u32 _portid;
if (WARN_ON(skb->len < 10)) {
/* Should not happen; just a sanity check for addr1 use */
ieee80211_free_txskb(hw, skb);
return;
}
if (!data->use_chanctx) {
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)
channel = chanctx_conf->def.chan;
else
channel = NULL;
}
if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
ieee80211_free_txskb(hw, skb);
return;
}
if (data->idle && !data->tmp_chan) {
wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
ieee80211_free_txskb(hw, skb);
return;
}
if (txi->control.vif)
hwsim_check_magic(txi->control.vif);
if (control->sta)
hwsim_check_sta_magic(control->sta);
if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
txi->control.rates,
ARRAY_SIZE(txi->control.rates));
txi->rate_driver_data[0] = channel;
mac80211_hwsim_monitor_rx(hw, skb, channel);
/* wmediumd mode check */
_portid = ACCESS_ONCE(wmediumd_portid);
if (_portid)
return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
/* NO wmediumd detected, perfect medium simulation */
ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
if (ack && skb->len >= 16) {
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
mac80211_hwsim_monitor_ack(channel, hdr->addr2);
}
ieee80211_tx_info_clear_status(txi);
/* frame was transmitted at most favorable rate at first attempt */
txi->control.rates[0].count = 1;
txi->control.rates[1].idx = -1;
if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
txi->flags |= IEEE80211_TX_STAT_ACK;
ieee80211_tx_status_irqsafe(hw, skb);
}
static int mac80211_hwsim_start(struct ieee80211_hw *hw)
{
struct mac80211_hwsim_data *data = hw->priv;
wiphy_debug(hw->wiphy, "%s\n", __func__);
data->started = true;
return 0;
}
static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
{
struct mac80211_hwsim_data *data = hw->priv;
data->started = false;
tasklet_hrtimer_cancel(&data->beacon_timer);
wiphy_debug(hw->wiphy, "%s\n", __func__);
}
static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
__func__, ieee80211_vif_type_p2p(vif),
vif->addr);
hwsim_set_magic(vif);
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;
return 0;
}
static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
enum nl80211_iftype newtype,
bool newp2p)
{
newtype = ieee80211_iftype_p2p(newtype, newp2p);
wiphy_debug(hw->wiphy,
"%s (old type=%d, new type=%d, mac_addr=%pM)\n",
__func__, ieee80211_vif_type_p2p(vif),
newtype, vif->addr);
hwsim_check_magic(vif);
/*
* interface may change from non-AP to AP in
* which case this needs to be set up again
*/
vif->cab_queue = 0;
return 0;
}
static void mac80211_hwsim_remove_interface(
struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
__func__, ieee80211_vif_type_p2p(vif),
vif->addr);
hwsim_check_magic(vif);
hwsim_clear_magic(vif);
}
static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
struct sk_buff *skb,
struct ieee80211_channel *chan)
{
u32 _pid = ACCESS_ONCE(wmediumd_portid);
if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE) {
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));
}
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);
}
static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
struct ieee80211_vif *vif)
{
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;
struct sk_buff *skb;
hwsim_check_magic(vif);
if (vif->type != NL80211_IFTYPE_AP &&
vif->type != NL80211_IFTYPE_MESH_POINT &&
vif->type != NL80211_IFTYPE_ADHOC)
return;
skb = ieee80211_beacon_get(hw, vif);
if (skb == NULL)
return;
info = IEEE80211_SKB_CB(skb);
if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
ieee80211_get_tx_rates(vif, NULL, skb,
info->control.rates,
ARRAY_SIZE(info->control.rates));
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);
mac80211_hwsim_tx_frame(hw, skb,
rcu_dereference(vif->chanctx_conf)->def.chan);
if (vif->csa_active && ieee80211_csa_is_complete(vif))
ieee80211_csa_finish(vif);
}
static enum hrtimer_restart
mac80211_hwsim_beacon(struct hrtimer *timer)
{
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;
if (!data->started)
goto out;
ieee80211_iterate_active_interfaces_atomic(
hw, IEEE80211_IFACE_ITER_NORMAL,
mac80211_hwsim_beacon_tx, data);
/* beacon at new TBTT + beacon interval */
if (data->bcn_delta) {
bcn_int -= data->bcn_delta;
data->bcn_delta = 0;
}
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;
}
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",
};
static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
{
struct mac80211_hwsim_data *data = hw->priv;
struct ieee80211_conf *conf = &hw->conf;
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",
};
if (conf->chandef.chan)
wiphy_debug(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]);
else
wiphy_debug(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]);
data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
data->channel = conf->chandef.chan;
WARN_ON(data->channel && data->use_chanctx);
data->power_level = conf->power_level;
if (!data->started || !data->beacon_int)
tasklet_hrtimer_cancel(&data->beacon_timer);
else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
u32 bcn_int = data->beacon_int;
u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
tasklet_hrtimer_start(&data->beacon_timer,
ns_to_ktime(until_tbtt * 1000),
HRTIMER_MODE_REL);
}
return 0;
}
static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *total_flags,u64 multicast)
{
struct mac80211_hwsim_data *data = hw->priv;
wiphy_debug(hw->wiphy, "%s\n", __func__);
data->rx_filter = 0;
if (*total_flags & FIF_PROMISC_IN_BSS)
data->rx_filter |= FIF_PROMISC_IN_BSS;
if (*total_flags & FIF_ALLMULTI)
data->rx_filter |= FIF_ALLMULTI;
*total_flags = data->rx_filter;
}
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)++;
}
static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *info,
u32 changed)
{
struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
struct mac80211_hwsim_data *data = hw->priv;
hwsim_check_magic(vif);
wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
__func__, changed, vif->addr);
if (changed & BSS_CHANGED_BSSID) {
wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
__func__, info->bssid);
memcpy(vp->bssid, info->bssid, ETH_ALEN);
}
if (changed & BSS_CHANGED_ASSOC) {
wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
info->assoc, info->aid);
vp->assoc = info->assoc;
vp->aid = info->aid;
}
if (changed & BSS_CHANGED_BEACON_INT) {
wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
data->beacon_int = info->beacon_int * 1024;
}
if (changed & BSS_CHANGED_BEACON_ENABLED) {
wiphy_debug(hw->wiphy, " BCN EN: %d\n", info->enable_beacon);
vp->bcn_en = info->enable_beacon;
if (data->started &&
!hrtimer_is_queued(&data->beacon_timer.timer) &&
info->enable_beacon) {
u64 tsf, until_tbtt;
u32 bcn_int;
if (WARN_ON(!data->beacon_int))
data->beacon_int = 1000 * 1024;
tsf = mac80211_hwsim_get_tsf(hw, vif);
bcn_int = data->beacon_int;
until_tbtt = bcn_int - do_div(tsf, bcn_int);
tasklet_hrtimer_start(&data->beacon_timer,
ns_to_ktime(until_tbtt * 1000),
HRTIMER_MODE_REL);
} else if (!info->enable_beacon) {
unsigned int count = 0;
ieee80211_iterate_active_interfaces_atomic(
data->hw, IEEE80211_IFACE_ITER_NORMAL,
mac80211_hwsim_bcn_en_iter, &count);
wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
count);
if (count == 0)
tasklet_hrtimer_cancel(&data->beacon_timer);
}
}
if (changed & BSS_CHANGED_ERP_CTS_PROT) {
wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
info->use_cts_prot);
}
if (changed & BSS_CHANGED_ERP_PREAMBLE) {
wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
info->use_short_preamble);
}
if (changed & BSS_CHANGED_ERP_SLOT) {
wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
}
if (changed & BSS_CHANGED_HT) {
wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
info->ht_operation_mode);
}
if (changed & BSS_CHANGED_BASIC_RATES) {
wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
(unsigned long long) info->basic_rates);
}
if (changed & BSS_CHANGED_TXPOWER)
wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
}
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;
}
static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
enum sta_notify_cmd cmd,
struct ieee80211_sta *sta)
{
hwsim_check_magic(vif);
switch (cmd) {
case STA_NOTIFY_SLEEP:
case STA_NOTIFY_AWAKE:
/* TODO: make good use of these flags */
break;
default:
WARN(1, "Invalid sta notify: %d\n", cmd);
break;
}
}
static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
struct ieee80211_sta *sta,
bool set)
{
hwsim_check_sta_magic(sta);
return 0;
}
static int mac80211_hwsim_conf_tx(
struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u16 queue,
const struct ieee80211_tx_queue_params *params)
{
wiphy_debug(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);
return 0;
}
static int mac80211_hwsim_get_survey(
struct ieee80211_hw *hw, int idx,
struct survey_info *survey)
{
struct ieee80211_conf *conf = &hw->conf;
wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
if (idx != 0)
return -ENOENT;
/* Current channel */
survey->channel = conf->chandef.chan;
/*
* Magically conjured noise level --- this is only ok for simulated hardware.
*
* A real driver which cannot determine the real channel noise MUST NOT
* report any noise, especially not a magically conjured one :-)
*/
survey->filled = SURVEY_INFO_NOISE_DBM;
survey->noise = -92;
return 0;
}
#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,
HWSIM_TM_CMD_STOP_QUEUES = 2,
HWSIM_TM_CMD_WAKE_QUEUES = 3,
};
static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
[HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
[HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
};
static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
void *data, int len)
{
struct mac80211_hwsim_data *hwsim = hw->priv;
struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
struct sk_buff *skb;
int err, ps;
err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
hwsim_testmode_policy);
if (err)
return err;
if (!tb[HWSIM_TM_ATTR_CMD])
return -EINVAL;
switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
case HWSIM_TM_CMD_SET_PS:
if (!tb[HWSIM_TM_ATTR_PS])
return -EINVAL;
ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
return hwsim_fops_ps_write(hwsim, ps);
case HWSIM_TM_CMD_GET_PS:
skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
nla_total_size(sizeof(u32)));
if (!skb)
return -ENOMEM;
if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
goto nla_put_failure;
return cfg80211_testmode_reply(skb);
case HWSIM_TM_CMD_STOP_QUEUES:
ieee80211_stop_queues(hw);
return 0;
case HWSIM_TM_CMD_WAKE_QUEUES:
ieee80211_wake_queues(hw);
return 0;
default:
return -EOPNOTSUPP;
}
nla_put_failure:
kfree_skb(skb);
return -ENOBUFS;
}
#endif
static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
enum ieee80211_ampdu_mlme_action action,
struct ieee80211_sta *sta, u16 tid, u16 *ssn,
u8 buf_size)
{
switch (action) {
case IEEE80211_AMPDU_TX_START:
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
break;
case IEEE80211_AMPDU_TX_STOP_CONT:
case IEEE80211_AMPDU_TX_STOP_FLUSH:
case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
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;
}
static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
u32 queues, bool drop)
{
/* Not implemented, queues only on kernel side */
}
static void hw_scan_work(struct work_struct *work)
{
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;
mutex_lock(&hwsim->mutex);
if (hwsim->scan_chan_idx >= req->n_channels) {
wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
ieee80211_scan_completed(hwsim->hw, false);
hwsim->hw_scan_request = NULL;
hwsim->hw_scan_vif = NULL;
hwsim->tmp_chan = NULL;
mutex_unlock(&hwsim->mutex);
return;
}
wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
req->channels[hwsim->scan_chan_idx]->center_freq);
hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
!req->n_ssids) {
dwell = 120;
} else {
dwell = 30;
/* send probes */
for (i = 0; i < req->n_ssids; i++) {
struct sk_buff *probe;
probe = ieee80211_probereq_get(hwsim->hw,
hwsim->hw_scan_vif,
req->ssids[i].ssid,
req->ssids[i].ssid_len,
req->ie_len);
if (!probe)
continue;
if (req->ie_len)
memcpy(skb_put(probe, req->ie_len), req->ie,
req->ie_len);
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));
hwsim->scan_chan_idx++;
mutex_unlock(&hwsim->mutex);
}
static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_scan_request *hw_req)
{
struct mac80211_hwsim_data *hwsim = hw->priv;
struct cfg80211_scan_request *req = &hw_req->req;
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;
mutex_unlock(&hwsim->mutex);
wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
return 0;
}
static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct mac80211_hwsim_data *hwsim = hw->priv;
wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
cancel_delayed_work_sync(&hwsim->hw_scan);
mutex_lock(&hwsim->mutex);
ieee80211_scan_completed(hwsim->hw, true);
hwsim->tmp_chan = NULL;
hwsim->hw_scan_request = NULL;
hwsim->hw_scan_vif = NULL;
mutex_unlock(&hwsim->mutex);
}
static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
{
struct mac80211_hwsim_data *hwsim = hw->priv;
mutex_lock(&hwsim->mutex);
if (hwsim->scanning) {
printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
goto out;
}
printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
hwsim->scanning = true;
out:
mutex_unlock(&hwsim->mutex);
}
static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
{
struct mac80211_hwsim_data *hwsim = hw->priv;
mutex_lock(&hwsim->mutex);
printk(KERN_DEBUG "hwsim sw_scan_complete\n");
hwsim->scanning = false;
mutex_unlock(&hwsim->mutex);
}
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);
wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
}
static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_channel *chan,
int duration,
enum ieee80211_roc_type type)
{
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;
}
hwsim->tmp_chan = chan;
mutex_unlock(&hwsim->mutex);
wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
chan->center_freq, duration);
ieee80211_ready_on_channel(hw);
ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
msecs_to_jiffies(duration));
return 0;
}
static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
{
struct mac80211_hwsim_data *hwsim = hw->priv;
cancel_delayed_work_sync(&hwsim->roc_done);
mutex_lock(&hwsim->mutex);
hwsim->tmp_chan = NULL;
mutex_unlock(&hwsim->mutex);
wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
return 0;
}
static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *ctx)
{
hwsim_set_chanctx_magic(ctx);
wiphy_debug(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);
return 0;
}
static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *ctx)
{
wiphy_debug(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);
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);
wiphy_debug(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);
}
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);
}
static const struct ieee80211_ops mac80211_hwsim_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,
.sw_scan_start = mac80211_hwsim_sw_scan,
.sw_scan_complete = mac80211_hwsim_sw_scan_complete,
.flush = mac80211_hwsim_flush,
.get_tsf = mac80211_hwsim_get_tsf,
.set_tsf = mac80211_hwsim_set_tsf,
};
static struct ieee80211_ops mac80211_hwsim_mchan_ops;
static int mac80211_hwsim_create_radio(int channels, const char *reg_alpha2,
const struct ieee80211_regdomain *regd,
bool reg_strict, bool p2p_device,
bool use_chanctx)
{
int err;
u8 addr[ETH_ALEN];
struct mac80211_hwsim_data *data;
struct ieee80211_hw *hw;
enum ieee80211_band band;
const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
int idx;
if (WARN_ON(channels > 1 && !use_chanctx))
return -EINVAL;
spin_lock_bh(&hwsim_radio_lock);
idx = hwsim_radio_idx++;
spin_unlock_bh(&hwsim_radio_lock);
if (use_chanctx)
ops = &mac80211_hwsim_mchan_ops;
hw = ieee80211_alloc_hw(sizeof(*data), ops);
if (!hw) {
printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
err = -ENOMEM;
goto failed;
}
data = hw->priv;
data->hw = hw;
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) {
printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
err);
goto failed_hw;
}
skb_queue_head_init(&data->pending);
SET_IEEE80211_DEV(hw, data->dev);
memset(addr, 0, ETH_ALEN);
addr[0] = 0x02;
addr[3] = idx >> 8;
addr[4] = idx;
memcpy(data->addresses[0].addr, addr, ETH_ALEN);
memcpy(data->addresses[1].addr, addr, ETH_ALEN);
data->addresses[1].addr[0] |= 0x40;
hw->wiphy->n_addresses = 2;
hw->wiphy->addresses = data->addresses;
data->channels = channels;
data->use_chanctx = use_chanctx;
data->idx = idx;
if (data->use_chanctx) {
hw->wiphy->max_scan_ssids = 255;
hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
hw->wiphy->max_remain_on_channel_duration = 1000;
/* For channels > 1 DFS is not allowed */
hw->wiphy->n_iface_combinations = 1;
hw->wiphy->iface_combinations = &data->if_combination;
if (p2p_device)
data->if_combination = hwsim_if_comb_p2p_dev[0];
else
data->if_combination = hwsim_if_comb[0];
data->if_combination.num_different_channels = data->channels;
} else if (p2p_device) {
hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
hw->wiphy->n_iface_combinations =
ARRAY_SIZE(hwsim_if_comb_p2p_dev);
} else {
hw->wiphy->iface_combinations = hwsim_if_comb;
hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
}
INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
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) |
BIT(NL80211_IFTYPE_MESH_POINT);
if (p2p_device)
hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
hw->flags = IEEE80211_HW_MFP_CAPABLE |
IEEE80211_HW_SIGNAL_DBM |
IEEE80211_HW_SUPPORTS_STATIC_SMPS |
IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
IEEE80211_HW_AMPDU_AGGREGATION |
IEEE80211_HW_WANT_MONITOR_VIF |
IEEE80211_HW_QUEUE_CONTROL |
IEEE80211_HW_SUPPORTS_HT_CCK_RATES |
IEEE80211_HW_CHANCTX_STA_CSA;
if (rctbl)
hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
WIPHY_FLAG_AP_UAPSD |
WIPHY_FLAG_HAS_CHANNEL_SWITCH;
hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;
hw->wiphy->features |= NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE;
/* 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);
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));
for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
struct ieee80211_supported_band *sband = &data->bands[band];
switch (band) {
case IEEE80211_BAND_2GHZ:
sband->channels = data->channels_2ghz;
sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
sband->bitrates = data->rates;
sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
break;
case IEEE80211_BAND_5GHZ:
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;
break;
default:
continue;
}
sband->ht_cap.ht_supported = true;
sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
IEEE80211_HT_CAP_GRN_FLD |
IEEE80211_HT_CAP_SGI_40 |
IEEE80211_HT_CAP_DSSSCCK40;
sband->ht_cap.ampdu_factor = 0x3;
sband->ht_cap.ampdu_density = 0x6;
memset(&sband->ht_cap.mcs, 0,
sizeof(sband->ht_cap.mcs));
sband->ht_cap.mcs.rx_mask[0] = 0xff;
sband->ht_cap.mcs.rx_mask[1] = 0xff;
sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
hw->wiphy->bands[band] = sband;
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_SUPP_CHAN_WIDTH_160MHZ |
IEEE80211_VHT_CAP_RXLDPC |
IEEE80211_VHT_CAP_SHORT_GI_80 |
IEEE80211_VHT_CAP_SHORT_GI_160 |
IEEE80211_VHT_CAP_TXSTBC |
IEEE80211_VHT_CAP_RXSTBC_1 |
IEEE80211_VHT_CAP_RXSTBC_2 |
IEEE80211_VHT_CAP_RXSTBC_3 |
IEEE80211_VHT_CAP_RXSTBC_4 |
IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
sband->vht_cap.vht_mcs.rx_mcs_map =
cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
sband->vht_cap.vht_mcs.tx_mcs_map =
sband->vht_cap.vht_mcs.rx_mcs_map;
}
/* By default all radios belong to the first group */
data->group = 1;
mutex_init(&data->mutex);
/* Enable frame retransmissions for lossy channels */
hw->max_rates = 4;
hw->max_rate_tries = 11;
if (reg_strict)
hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
if (regd) {
hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
wiphy_apply_custom_regulatory(hw->wiphy, regd);
/* give the regulatory workqueue a chance to run */
schedule_timeout_interruptible(1);
}
err = ieee80211_register_hw(hw);
if (err < 0) {
printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
err);
goto failed_hw;
}
wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
if (reg_alpha2)
regulatory_hint(hw->wiphy, reg_alpha2);
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);
if (!data->use_chanctx)
debugfs_create_file("dfs_simulate_radar", 0222,
data->debugfs,
data, &hwsim_simulate_radar);
tasklet_hrtimer_init(&data->beacon_timer,
mac80211_hwsim_beacon,
CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
spin_lock_bh(&hwsim_radio_lock);
list_add_tail(&data->list, &hwsim_radios);
spin_unlock_bh(&hwsim_radio_lock);
return idx;
failed_hw:
device_unregister(data->dev);
failed_drvdata:
ieee80211_free_hw(hw);
failed:
return err;
}
static void mac80211_hwsim_destroy_radio(struct mac80211_hwsim_data *data)
{
debugfs_remove_recursive(data->debugfs);
ieee80211_unregister_hw(data->hw);
device_release_driver(data->dev);
device_unregister(data->dev);
ieee80211_free_hw(data->hw);
}
static void mac80211_hwsim_free(void)
{
struct mac80211_hwsim_data *data;
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);
mac80211_hwsim_destroy_radio(data);
spin_lock_bh(&hwsim_radio_lock);
}
spin_unlock_bh(&hwsim_radio_lock);
class_destroy(hwsim_class);
}
static const struct net_device_ops hwsim_netdev_ops = {
.ndo_start_xmit = hwsim_mon_xmit,
.ndo_change_mtu = eth_change_mtu,
.ndo_set_mac_address = eth_mac_addr,
.ndo_validate_addr = eth_validate_addr,
};
static void hwsim_mon_setup(struct net_device *dev)
{
dev->netdev_ops = &hwsim_netdev_ops;
dev->destructor = free_netdev;
ether_setup(dev);
dev->tx_queue_len = 0;
dev->type = ARPHRD_IEEE80211_RADIOTAP;
memset(dev->dev_addr, 0, ETH_ALEN);
dev->dev_addr[0] = 0x12;
}
static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
{
struct mac80211_hwsim_data *data;
bool _found = false;
spin_lock_bh(&hwsim_radio_lock);
list_for_each_entry(data, &hwsim_radios, list) {
if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
_found = true;
break;
}
}
spin_unlock_bh(&hwsim_radio_lock);
if (!_found)
return NULL;
return data;
}
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;
unsigned long ret_skb_ptr;
struct sk_buff *skb, *tmp;
const u8 *src;
unsigned int hwsim_flags;
int i;
bool found = false;
if (info->snd_portid != wmediumd_portid)
return -EINVAL;
if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
!info->attrs[HWSIM_ATTR_FLAGS] ||
!info->attrs[HWSIM_ATTR_COOKIE] ||
!info->attrs[HWSIM_ATTR_TX_INFO])
goto out;
src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
data2 = get_hwsim_data_ref_from_addr(src);
if (!data2)
goto out;
/* look for the skb matching the cookie passed back from user */
skb_queue_walk_safe(&data2->pending, skb, tmp) {
if ((unsigned long)skb == ret_skb_ptr) {
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.rates[i].flags = 0;*/
}
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;
mac80211_hwsim_monitor_ack(data2->channel,
hdr->addr2);
}
txi->flags |= IEEE80211_TX_STAT_ACK;
}
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)
{
struct mac80211_hwsim_data *data2;
struct ieee80211_rx_status rx_status;
const u8 *dst;
int frame_data_len;
void *frame_data;
struct sk_buff *skb = NULL;
if (info->snd_portid != wmediumd_portid)
return -EINVAL;
if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
!info->attrs[HWSIM_ATTR_FRAME] ||
!info->attrs[HWSIM_ATTR_RX_RATE] ||
!info->attrs[HWSIM_ATTR_SIGNAL])
goto out;
dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
/* Allocate new skb here */
skb = alloc_skb(frame_data_len, GFP_KERNEL);
if (skb == NULL)
goto err;
if (frame_data_len > IEEE80211_MAX_DATA_LEN)
goto err;
/* Copy the data */
memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
data2 = get_hwsim_data_ref_from_addr(dst);
if (!data2)
goto out;
/* check if radio is configured properly */
if (data2->idle || !data2->started)
goto out;
/* A frame is received from user space */
memset(&rx_status, 0, sizeof(rx_status));
rx_status.freq = data2->channel->center_freq;
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));
ieee80211_rx_irqsafe(data2->hw, skb);
return 0;
err:
printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
goto out;
out:
dev_kfree_skb(skb);
return -EINVAL;
}
static int hwsim_register_received_nl(struct sk_buff *skb_2,
struct genl_info *info)
{
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;
if (wmediumd_portid)
return -EBUSY;
wmediumd_portid = info->snd_portid;
printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
"switching to wmediumd mode with pid %d\n", info->snd_portid);
return 0;
}
static int hwsim_create_radio_nl(struct sk_buff *msg, struct genl_info *info)
{
unsigned int chans = channels;
const char *alpha2 = NULL;
const struct ieee80211_regdomain *regd = NULL;
bool reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
bool p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
bool use_chanctx;
if (info->attrs[HWSIM_ATTR_CHANNELS])
chans = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
use_chanctx = true;
else
use_chanctx = (chans > 1);
if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
alpha2 = nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
return -EINVAL;
regd = hwsim_world_regdom_custom[idx];
}
return mac80211_hwsim_create_radio(chans, alpha2, regd, reg_strict,
p2p_device, use_chanctx);
}
static int hwsim_destroy_radio_nl(struct sk_buff *msg, struct genl_info *info)
{
struct mac80211_hwsim_data *data;
int idx;
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;
list_del(&data->list);
spin_unlock_bh(&hwsim_radio_lock);
mac80211_hwsim_destroy_radio(data);
return 0;
}
spin_unlock_bh(&hwsim_radio_lock);
return -ENODEV;
}
/* Generic Netlink operations array */
static const struct genl_ops hwsim_ops[] = {
{
.cmd = HWSIM_CMD_REGISTER,
.policy = hwsim_genl_policy,
.doit = hwsim_register_received_nl,
.flags = GENL_ADMIN_PERM,
},
{
.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,
},
{
.cmd = HWSIM_CMD_CREATE_RADIO,
.policy = hwsim_genl_policy,
.doit = hwsim_create_radio_nl,
.flags = GENL_ADMIN_PERM,
},
{
.cmd = HWSIM_CMD_DESTROY_RADIO,
.policy = hwsim_genl_policy,
.doit = hwsim_destroy_radio_nl,
.flags = GENL_ADMIN_PERM,
},
};
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;
if (notify->portid == wmediumd_portid) {
printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
" socket, switching to perfect channel medium\n");
wmediumd_portid = 0;
}
return NOTIFY_DONE;
}
static struct notifier_block hwsim_netlink_notifier = {
.notifier_call = mac80211_hwsim_netlink_notify,
};
static int hwsim_init_netlink(void)
{
int rc;
printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
rc = genl_register_family_with_ops(&hwsim_genl_family, hwsim_ops);
if (rc)
goto failure;
rc = netlink_register_notifier(&hwsim_netlink_notifier);
if (rc)
goto failure;
return 0;
failure:
printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
return -EINVAL;
}
static void hwsim_exit_netlink(void)
{
/* unregister the notifier */
netlink_unregister_notifier(&hwsim_netlink_notifier);
/* unregister the family */
genl_unregister_family(&hwsim_genl_family);
}
static int __init init_mac80211_hwsim(void)
{
int i, err;
if (radios < 0 || radios > 100)
return -EINVAL;
if (channels < 1)
return -EINVAL;
mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
mac80211_hwsim_mchan_ops.assign_vif_chanctx =
mac80211_hwsim_assign_vif_chanctx;
mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
mac80211_hwsim_unassign_vif_chanctx;
spin_lock_init(&hwsim_radio_lock);
INIT_LIST_HEAD(&hwsim_radios);
err = platform_driver_register(&mac80211_hwsim_driver);
if (err)
return err;
hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
if (IS_ERR(hwsim_class)) {
err = PTR_ERR(hwsim_class);
goto out_unregister_driver;
}
for (i = 0; i < radios; i++) {
const char *reg_alpha2 = NULL;
const struct ieee80211_regdomain *regd = NULL;
bool reg_strict = false;
switch (regtest) {
case HWSIM_REGTEST_DIFF_COUNTRY:
if (i < ARRAY_SIZE(hwsim_alpha2s))
reg_alpha2 = hwsim_alpha2s[i];
break;
case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
if (!i)
reg_alpha2 = hwsim_alpha2s[0];
break;
case HWSIM_REGTEST_STRICT_ALL:
reg_strict = true;
case HWSIM_REGTEST_DRIVER_REG_ALL:
reg_alpha2 = hwsim_alpha2s[0];
break;
case HWSIM_REGTEST_WORLD_ROAM:
if (i == 0)
regd = &hwsim_world_regdom_custom_01;
break;
case HWSIM_REGTEST_CUSTOM_WORLD:
regd = &hwsim_world_regdom_custom_01;
break;
case HWSIM_REGTEST_CUSTOM_WORLD_2:
if (i == 0)
regd = &hwsim_world_regdom_custom_01;
else if (i == 1)
regd = &hwsim_world_regdom_custom_02;
break;
case HWSIM_REGTEST_STRICT_FOLLOW:
if (i == 0) {
reg_strict = true;
reg_alpha2 = hwsim_alpha2s[0];
}
break;
case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
if (i == 0) {
reg_strict = true;
reg_alpha2 = hwsim_alpha2s[0];
} else if (i == 1) {
reg_alpha2 = hwsim_alpha2s[1];
}
break;
case HWSIM_REGTEST_ALL:
switch (i) {
case 0:
regd = &hwsim_world_regdom_custom_01;
break;
case 1:
regd = &hwsim_world_regdom_custom_02;
break;
case 2:
reg_alpha2 = hwsim_alpha2s[0];
break;
case 3:
reg_alpha2 = hwsim_alpha2s[1];
break;
case 4:
reg_strict = true;
reg_alpha2 = hwsim_alpha2s[2];
break;
}
break;
default:
break;
}
err = mac80211_hwsim_create_radio(channels, reg_alpha2,
regd, reg_strict,
support_p2p_device,
channels > 1);
if (err < 0)
goto out_free_radios;
}
hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
hwsim_mon_setup);
if (hwsim_mon == NULL) {
err = -ENOMEM;
goto out_free_radios;
}
rtnl_lock();
err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
if (err < 0) {
rtnl_unlock();
goto out_free_radios;
}
err = register_netdevice(hwsim_mon);
if (err < 0) {
rtnl_unlock();
goto out_free_mon;
}
rtnl_unlock();
err = hwsim_init_netlink();
if (err < 0)
goto out_free_mon;
return 0;
out_free_mon:
free_netdev(hwsim_mon);
out_free_radios:
mac80211_hwsim_free();
out_unregister_driver:
platform_driver_unregister(&mac80211_hwsim_driver);
return err;
}
module_init(init_mac80211_hwsim);
static void __exit exit_mac80211_hwsim(void)
{
printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
hwsim_exit_netlink();
mac80211_hwsim_free();
unregister_netdev(hwsim_mon);
platform_driver_unregister(&mac80211_hwsim_driver);
}
module_exit(exit_mac80211_hwsim);
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