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android_kernel_motorola_sm6225/drivers/net/wireless/mac80211_hwsim.c
Jouni Malinen fc6971d491 mac80211_hwsim: Add support for client PS mode 
This introduces a debugfs file (ieee80211/phy#/hwsim/ps) that can be
used to force a simulated radio into power save mode. Following values
can be written into this file to change PS mode:
0 = power save disabled (constantly awake)
1 = power save enabled (drop all frames; do not send PS-Poll)
2 = power save enabled (send PS-Poll frames automatically to receive
    buffered unicast frames); not yet fully implemented
3 = manual PS-Poll trigger (send a single PS-Poll frame)

Two different behavior for power save mode processing can be tested:
- move between modes 1 and 0 (i.e., receive all buffered frames at a
  time)
- move to mode 1 and use manual PS-Poll frames (write 3 to the 'ps'
  debugfs file) to fetch power save buffered frames one at a time

Mode 2 (automatic PS-Poll) does not yet parse Beacon frames, but
eventually, it should take a look at TIM IE and send PS-Poll if a
traffic bit is set for our AID.

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-11-10 15:17:41 -05:00

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/*
* mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
* Copyright (c) 2008, Jouni Malinen <j@w1.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
/*
* TODO:
* - IBSS mode simulation (Beacon transmission with competition for "air time")
* - IEEE 802.11a and 802.11n modes
* - RX filtering based on filter configuration (data->rx_filter)
*/
#include <linux/list.h>
#include <linux/spinlock.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/debugfs.h>
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");
struct hwsim_vif_priv {
u32 magic;
u8 bssid[ETH_ALEN];
bool assoc;
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_ON(vp->magic != HWSIM_VIF_MAGIC);
}
static inline void hwsim_set_magic(struct ieee80211_vif *vif)
{
struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
vp->magic = HWSIM_VIF_MAGIC;
}
static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
{
struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
vp->magic = 0;
}
struct hwsim_sta_priv {
u32 magic;
};
#define HWSIM_STA_MAGIC 0x6d537748
static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
{
struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
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;
}
static struct class *hwsim_class;
static struct net_device *hwsim_mon; /* global monitor netdev */
static const struct ieee80211_channel hwsim_channels[] = {
{ .center_freq = 2412 },
{ .center_freq = 2417 },
{ .center_freq = 2422 },
{ .center_freq = 2427 },
{ .center_freq = 2432 },
{ .center_freq = 2437 },
{ .center_freq = 2442 },
{ .center_freq = 2447 },
{ .center_freq = 2452 },
{ .center_freq = 2457 },
{ .center_freq = 2462 },
{ .center_freq = 2467 },
{ .center_freq = 2472 },
{ .center_freq = 2484 },
};
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 spinlock_t hwsim_radio_lock;
static struct list_head hwsim_radios;
struct mac80211_hwsim_data {
struct list_head list;
struct ieee80211_hw *hw;
struct device *dev;
struct ieee80211_supported_band band;
struct ieee80211_channel channels[ARRAY_SIZE(hwsim_channels)];
struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
struct ieee80211_channel *channel;
int radio_enabled;
unsigned long beacon_int; /* in jiffies unit */
unsigned int rx_filter;
int started;
struct timer_list beacon_timer;
enum ps_mode {
PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
} ps;
bool ps_poll_pending;
struct dentry *debugfs;
struct dentry *debugfs_ps;
};
struct hwsim_radiotap_hdr {
struct ieee80211_radiotap_header hdr;
u8 rt_flags;
u8 rt_rate;
__le16 rt_channel;
__le16 rt_chbitmask;
} __attribute__ ((packed));
static int hwsim_mon_xmit(struct sk_buff *skb, struct net_device *dev)
{
/* TODO: allow packet injection */
dev_kfree_skb(skb);
return 0;
}
static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
struct sk_buff *tx_skb)
{
struct mac80211_hwsim_data *data = hw->priv;
struct sk_buff *skb;
struct hwsim_radiotap_hdr *hdr;
u16 flags;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
if (!netif_running(hwsim_mon))
return;
skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
if (skb == NULL)
return;
hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
hdr->hdr.it_pad = 0;
hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
(1 << IEEE80211_RADIOTAP_RATE) |
(1 << IEEE80211_RADIOTAP_CHANNEL));
hdr->rt_flags = 0;
hdr->rt_rate = txrate->bitrate / 5;
hdr->rt_channel = cpu_to_le16(data->channel->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 bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
struct sk_buff *skb)
{
switch (data->ps) {
case PS_DISABLED:
return true;
case PS_ENABLED:
return false;
case PS_AUTO_POLL:
/* TODO: accept (some) Beacons by default and other frames only
* if pending PS-Poll has been sent */
return true;
case PS_MANUAL_POLL:
/* Allow unicast frames to own address if there is a pending
* PS-Poll */
if (data->ps_poll_pending &&
memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
ETH_ALEN) == 0) {
data->ps_poll_pending = false;
return true;
}
return false;
}
return true;
}
static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
struct sk_buff *skb)
{
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;
memset(&rx_status, 0, sizeof(rx_status));
/* TODO: set mactime */
rx_status.freq = data->channel->center_freq;
rx_status.band = data->channel->band;
rx_status.rate_idx = info->control.rates[0].idx;
/* TODO: simulate signal strength (and optional packet drop) */
if (data->ps != PS_DISABLED)
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
/* 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;
if (data == data2)
continue;
if (!data2->started || !data2->radio_enabled ||
!hwsim_ps_rx_ok(data2, skb) ||
data->channel->center_freq != data2->channel->center_freq)
continue;
nskb = skb_copy(skb, GFP_ATOMIC);
if (nskb == NULL)
continue;
if (memcmp(hdr->addr1, data2->hw->wiphy->perm_addr,
ETH_ALEN) == 0)
ack = true;
ieee80211_rx_irqsafe(data2->hw, nskb, &rx_status);
}
spin_unlock(&hwsim_radio_lock);
return ack;
}
static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
{
struct mac80211_hwsim_data *data = hw->priv;
bool ack;
struct ieee80211_tx_info *txi;
mac80211_hwsim_monitor_rx(hw, skb);
if (skb->len < 10) {
/* Should not happen; just a sanity check for addr1 use */
dev_kfree_skb(skb);
return NETDEV_TX_OK;
}
if (!data->radio_enabled) {
printk(KERN_DEBUG "%s: dropped TX frame since radio "
"disabled\n", wiphy_name(hw->wiphy));
dev_kfree_skb(skb);
return NETDEV_TX_OK;
}
ack = mac80211_hwsim_tx_frame(hw, skb);
txi = IEEE80211_SKB_CB(skb);
if (txi->control.vif)
hwsim_check_magic(txi->control.vif);
if (txi->control.sta)
hwsim_check_sta_magic(txi->control.sta);
ieee80211_tx_info_clear_status(txi);
if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
txi->flags |= IEEE80211_TX_STAT_ACK;
ieee80211_tx_status_irqsafe(hw, skb);
return NETDEV_TX_OK;
}
static int mac80211_hwsim_start(struct ieee80211_hw *hw)
{
struct mac80211_hwsim_data *data = hw->priv;
printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
data->started = 1;
return 0;
}
static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
{
struct mac80211_hwsim_data *data = hw->priv;
data->started = 0;
del_timer(&data->beacon_timer);
printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
}
static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
struct ieee80211_if_init_conf *conf)
{
printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
wiphy_name(hw->wiphy), __func__, conf->type,
conf->mac_addr);
hwsim_set_magic(conf->vif);
return 0;
}
static void mac80211_hwsim_remove_interface(
struct ieee80211_hw *hw, struct ieee80211_if_init_conf *conf)
{
printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
wiphy_name(hw->wiphy), __func__, conf->type,
conf->mac_addr);
hwsim_check_magic(conf->vif);
hwsim_clear_magic(conf->vif);
}
static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
struct ieee80211_vif *vif)
{
struct ieee80211_hw *hw = arg;
struct sk_buff *skb;
struct ieee80211_tx_info *info;
hwsim_check_magic(vif);
if (vif->type != NL80211_IFTYPE_AP)
return;
skb = ieee80211_beacon_get(hw, vif);
if (skb == NULL)
return;
info = IEEE80211_SKB_CB(skb);
mac80211_hwsim_monitor_rx(hw, skb);
mac80211_hwsim_tx_frame(hw, skb);
dev_kfree_skb(skb);
}
static void mac80211_hwsim_beacon(unsigned long arg)
{
struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
struct mac80211_hwsim_data *data = hw->priv;
if (!data->started || !data->radio_enabled)
return;
ieee80211_iterate_active_interfaces_atomic(
hw, mac80211_hwsim_beacon_tx, hw);
data->beacon_timer.expires = jiffies + data->beacon_int;
add_timer(&data->beacon_timer);
}
static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
{
struct mac80211_hwsim_data *data = hw->priv;
struct ieee80211_conf *conf = &hw->conf;
printk(KERN_DEBUG "%s:%s (freq=%d radio_enabled=%d beacon_int=%d)\n",
wiphy_name(hw->wiphy), __func__,
conf->channel->center_freq, conf->radio_enabled,
conf->beacon_int);
data->channel = conf->channel;
data->radio_enabled = conf->radio_enabled;
data->beacon_int = 1024 * conf->beacon_int / 1000 * HZ / 1000;
if (data->beacon_int < 1)
data->beacon_int = 1;
if (!data->started || !data->radio_enabled)
del_timer(&data->beacon_timer);
else
mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
return 0;
}
static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *total_flags,
int mc_count,
struct dev_addr_list *mc_list)
{
struct mac80211_hwsim_data *data = hw->priv;
printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
data->rx_filter = 0;
if (*total_flags & FIF_PROMISC_IN_BSS)
data->rx_filter |= FIF_PROMISC_IN_BSS;
if (*total_flags & FIF_ALLMULTI)
data->rx_filter |= FIF_ALLMULTI;
*total_flags = data->rx_filter;
}
static int mac80211_hwsim_config_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_if_conf *conf)
{
struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
hwsim_check_magic(vif);
if (conf->changed & IEEE80211_IFCC_BSSID) {
DECLARE_MAC_BUF(mac);
printk(KERN_DEBUG "%s:%s: BSSID changed: %s\n",
wiphy_name(hw->wiphy), __func__,
print_mac(mac, conf->bssid));
memcpy(vp->bssid, conf->bssid, ETH_ALEN);
}
return 0;
}
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;
hwsim_check_magic(vif);
printk(KERN_DEBUG "%s:%s(changed=0x%x)\n",
wiphy_name(hw->wiphy), __func__, changed);
if (changed & BSS_CHANGED_ASSOC) {
printk(KERN_DEBUG " %s: ASSOC: assoc=%d aid=%d\n",
wiphy_name(hw->wiphy), info->assoc, info->aid);
vp->assoc = info->assoc;
vp->aid = info->aid;
}
if (changed & BSS_CHANGED_ERP_CTS_PROT) {
printk(KERN_DEBUG " %s: ERP_CTS_PROT: %d\n",
wiphy_name(hw->wiphy), info->use_cts_prot);
}
if (changed & BSS_CHANGED_ERP_PREAMBLE) {
printk(KERN_DEBUG " %s: ERP_PREAMBLE: %d\n",
wiphy_name(hw->wiphy), info->use_short_preamble);
}
if (changed & BSS_CHANGED_ERP_SLOT) {
printk(KERN_DEBUG " %s: ERP_SLOT: %d\n",
wiphy_name(hw->wiphy), info->use_short_slot);
}
if (changed & BSS_CHANGED_HT) {
printk(KERN_DEBUG " %s: HT: sec_ch_offs=%d width_40_ok=%d "
"op_mode=%d\n",
wiphy_name(hw->wiphy),
info->ht.secondary_channel_offset,
info->ht.width_40_ok, info->ht.operation_mode);
}
if (changed & BSS_CHANGED_BASIC_RATES) {
printk(KERN_DEBUG " %s: BASIC_RATES: 0x%llx\n",
wiphy_name(hw->wiphy),
(unsigned long long) info->basic_rates);
}
}
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_ADD:
hwsim_set_sta_magic(sta);
break;
case STA_NOTIFY_REMOVE:
hwsim_clear_sta_magic(sta);
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, u16 queue,
const struct ieee80211_tx_queue_params *params)
{
printk(KERN_DEBUG "%s:%s (queue=%d txop=%d cw_min=%d cw_max=%d "
"aifs=%d)\n",
wiphy_name(hw->wiphy), __func__, queue,
params->txop, params->cw_min, params->cw_max, params->aifs);
return 0;
}
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,
.remove_interface = mac80211_hwsim_remove_interface,
.config = mac80211_hwsim_config,
.configure_filter = mac80211_hwsim_configure_filter,
.config_interface = mac80211_hwsim_config_interface,
.bss_info_changed = mac80211_hwsim_bss_info_changed,
.sta_notify = mac80211_hwsim_sta_notify,
.set_tim = mac80211_hwsim_set_tim,
.conf_tx = mac80211_hwsim_conf_tx,
};
static void mac80211_hwsim_free(void)
{
struct list_head tmplist, *i, *tmp;
struct mac80211_hwsim_data *data;
INIT_LIST_HEAD(&tmplist);
spin_lock_bh(&hwsim_radio_lock);
list_for_each_safe(i, tmp, &hwsim_radios)
list_move(i, &tmplist);
spin_unlock_bh(&hwsim_radio_lock);
list_for_each_entry(data, &tmplist, list) {
debugfs_remove(data->debugfs_ps);
debugfs_remove(data->debugfs);
ieee80211_unregister_hw(data->hw);
device_unregister(data->dev);
ieee80211_free_hw(data->hw);
}
class_destroy(hwsim_class);
}
static struct device_driver mac80211_hwsim_driver = {
.name = "mac80211_hwsim"
};
static void hwsim_mon_setup(struct net_device *dev)
{
dev->hard_start_xmit = hwsim_mon_xmit;
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 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;
DECLARE_MAC_BUF(buf);
struct sk_buff *skb;
struct ieee80211_pspoll *pspoll;
if (!vp->assoc)
return;
printk(KERN_DEBUG "%s:%s: send PS-Poll to %s for aid %d\n",
wiphy_name(data->hw->wiphy), __func__,
print_mac(buf, 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);
if (data->radio_enabled &&
!mac80211_hwsim_tx_frame(data->hw, skb))
printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
dev_kfree_skb(skb);
}
static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
struct ieee80211_vif *vif, int ps)
{
struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
DECLARE_MAC_BUF(buf);
struct sk_buff *skb;
struct ieee80211_hdr *hdr;
if (!vp->assoc)
return;
printk(KERN_DEBUG "%s:%s: send data::nullfunc to %s ps=%d\n",
wiphy_name(data->hw->wiphy), __func__,
print_mac(buf, 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);
if (data->radio_enabled &&
!mac80211_hwsim_tx_frame(data->hw, skb))
printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
dev_kfree_skb(skb);
}
static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
struct ieee80211_vif *vif)
{
struct mac80211_hwsim_data *data = dat;
hwsim_send_nullfunc(data, mac, vif, 1);
}
static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
struct ieee80211_vif *vif)
{
struct mac80211_hwsim_data *data = dat;
hwsim_send_nullfunc(data, mac, vif, 0);
}
static int hwsim_fops_ps_read(void *dat, u64 *val)
{
struct mac80211_hwsim_data *data = dat;
*val = data->ps;
return 0;
}
static int hwsim_fops_ps_write(void *dat, u64 val)
{
struct mac80211_hwsim_data *data = dat;
enum ps_mode old_ps;
if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
val != PS_MANUAL_POLL)
return -EINVAL;
old_ps = data->ps;
data->ps = val;
if (val == PS_MANUAL_POLL) {
ieee80211_iterate_active_interfaces(data->hw,
hwsim_send_ps_poll, data);
data->ps_poll_pending = true;
} else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
ieee80211_iterate_active_interfaces(data->hw,
hwsim_send_nullfunc_ps,
data);
} else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
ieee80211_iterate_active_interfaces(data->hw,
hwsim_send_nullfunc_no_ps,
data);
}
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
"%llu\n");
static int __init init_mac80211_hwsim(void)
{
int i, err = 0;
u8 addr[ETH_ALEN];
struct mac80211_hwsim_data *data;
struct ieee80211_hw *hw;
if (radios < 1 || radios > 100)
return -EINVAL;
spin_lock_init(&hwsim_radio_lock);
INIT_LIST_HEAD(&hwsim_radios);
hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
if (IS_ERR(hwsim_class))
return PTR_ERR(hwsim_class);
memset(addr, 0, ETH_ALEN);
addr[0] = 0x02;
for (i = 0; i < radios; i++) {
printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
i);
hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_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", i);
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;
SET_IEEE80211_DEV(hw, data->dev);
addr[3] = i >> 8;
addr[4] = i;
SET_IEEE80211_PERM_ADDR(hw, addr);
hw->channel_change_time = 1;
hw->queues = 4;
hw->wiphy->interface_modes =
BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_AP);
hw->ampdu_queues = 1;
/* 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);
memcpy(data->channels, hwsim_channels, sizeof(hwsim_channels));
memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
data->band.channels = data->channels;
data->band.n_channels = ARRAY_SIZE(hwsim_channels);
data->band.bitrates = data->rates;
data->band.n_bitrates = ARRAY_SIZE(hwsim_rates);
data->band.ht_cap.ht_supported = true;
data->band.ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
IEEE80211_HT_CAP_GRN_FLD |
IEEE80211_HT_CAP_SGI_40 |
IEEE80211_HT_CAP_DSSSCCK40;
data->band.ht_cap.ampdu_factor = 0x3;
data->band.ht_cap.ampdu_density = 0x6;
memset(&data->band.ht_cap.mcs, 0,
sizeof(data->band.ht_cap.mcs));
data->band.ht_cap.mcs.rx_mask[0] = 0xff;
data->band.ht_cap.mcs.rx_mask[1] = 0xff;
data->band.ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &data->band;
err = ieee80211_register_hw(hw);
if (err < 0) {
printk(KERN_DEBUG "mac80211_hwsim: "
"ieee80211_register_hw failed (%d)\n", err);
goto failed_hw;
}
printk(KERN_DEBUG "%s: hwaddr %pM registered\n",
wiphy_name(hw->wiphy),
hw->wiphy->perm_addr);
data->debugfs = debugfs_create_dir("hwsim",
hw->wiphy->debugfsdir);
data->debugfs_ps = debugfs_create_file("ps", 0666,
data->debugfs, data,
&hwsim_fops_ps);
setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
(unsigned long) hw);
list_add_tail(&data->list, &hwsim_radios);
}
hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
if (hwsim_mon == NULL)
goto failed;
rtnl_lock();
err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
if (err < 0)
goto failed_mon;
err = register_netdevice(hwsim_mon);
if (err < 0)
goto failed_mon;
rtnl_unlock();
return 0;
failed_mon:
rtnl_unlock();
free_netdev(hwsim_mon);
mac80211_hwsim_free();
return err;
failed_hw:
device_unregister(data->dev);
failed_drvdata:
ieee80211_free_hw(hw);
failed:
mac80211_hwsim_free();
return err;
}
static void __exit exit_mac80211_hwsim(void)
{
printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
unregister_netdev(hwsim_mon);
mac80211_hwsim_free();
}
module_init(init_mac80211_hwsim);
module_exit(exit_mac80211_hwsim);
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