1 files changed, 257 insertions, 31 deletions

diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 1a019e98dac3..b9230da925ee 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -21,6 +21,7 @@
 #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");
@@ -32,6 +33,9 @@ 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
@@ -63,13 +67,13 @@ struct hwsim_sta_priv {
 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_VIF_MAGIC);
+        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_VIF_MAGIC;
+        sp->magic = HWSIM_STA_MAGIC;
 }
 
 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
@@ -132,6 +136,12 @@ struct mac80211_hwsim_data {
         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;
 };
 
 
@@ -196,6 +206,34 @@ static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 }
 
 
+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)
 {
@@ -209,9 +247,12 @@ static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
         /* TODO: set mactime */
         rx_status.freq = data->channel->center_freq;
         rx_status.band = data->channel->band;
-        rx_status.rate_idx = info->tx_rate_idx;
+        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) {
@@ -221,6 +262,7 @@ static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
                         continue;
 
                 if (!data2->started || !data2->radio_enabled ||
+                    !hwsim_ps_rx_ok(data2, skb) ||
                     data->channel->center_freq != data2->channel->center_freq)
                         continue;
 
@@ -269,13 +311,9 @@ static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
         if (txi->control.sta)
                 hwsim_check_sta_magic(txi->control.sta);
 
-        memset(&txi->status, 0, sizeof(txi->status));
-        if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK)) {
-                if (ack)
-                        txi->flags |= IEEE80211_TX_STAT_ACK;
-                else
-                        txi->status.excessive_retries = 1;
-        }
+        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;
 }
@@ -294,6 +332,7 @@ 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__);
 }
 
@@ -301,10 +340,9 @@ static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
                                         struct ieee80211_if_init_conf *conf)
 {
-        DECLARE_MAC_BUF(mac);
-        printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%s)\n",
+        printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
                wiphy_name(hw->wiphy), __func__, conf->type,
-               print_mac(mac, conf->mac_addr));
+               conf->mac_addr);
         hwsim_set_magic(conf->vif);
         return 0;
 }
@@ -313,10 +351,9 @@ static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 static void mac80211_hwsim_remove_interface(
         struct ieee80211_hw *hw, struct ieee80211_if_init_conf *conf)
 {
-        DECLARE_MAC_BUF(mac);
-        printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%s)\n",
+        printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
                wiphy_name(hw->wiphy), __func__, conf->type,
-               print_mac(mac, conf->mac_addr));
+               conf->mac_addr);
         hwsim_check_magic(conf->vif);
         hwsim_clear_magic(conf->vif);
 }
@@ -361,10 +398,10 @@ static void mac80211_hwsim_beacon(unsigned long arg)
 }
 
 
-static int mac80211_hwsim_config(struct ieee80211_hw *hw,
-                                 struct ieee80211_conf *conf)
+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__,
@@ -409,7 +446,16 @@ 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;
 }
 
@@ -418,7 +464,48 @@ static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
                                             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,
@@ -445,6 +532,17 @@ static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
         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,
@@ -458,6 +556,7 @@ static const struct ieee80211_ops mac80211_hwsim_ops =
         .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,
 };
 
 
@@ -474,6 +573,8 @@ static void mac80211_hwsim_free(void)
         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);
@@ -499,13 +600,133 @@ static void hwsim_mon_setup(struct net_device *dev)
 }
 
 
+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;
-        DECLARE_MAC_BUF(mac);
 
         if (radios < 1 || radios > 100)
                 return -EINVAL;
@@ -566,19 +787,18 @@ static int __init init_mac80211_hwsim(void)
                 data->band.n_channels = ARRAY_SIZE(hwsim_channels);
                 data->band.bitrates = data->rates;
                 data->band.n_bitrates = ARRAY_SIZE(hwsim_rates);
-                data->band.ht_info.ht_supported = 1;
-                data->band.ht_info.cap = IEEE80211_HT_CAP_SUP_WIDTH |
+                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_info.ampdu_factor = 0x3;
-                data->band.ht_info.ampdu_density = 0x6;
-                memset(data->band.ht_info.supp_mcs_set, 0,
-                       sizeof(data->band.ht_info.supp_mcs_set));
-                data->band.ht_info.supp_mcs_set[0] = 0xff;
-                data->band.ht_info.supp_mcs_set[1] = 0xff;
-                data->band.ht_info.supp_mcs_set[12] =
-                        IEEE80211_HT_CAP_MCS_TX_DEFINED;
+                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);
@@ -588,9 +808,15 @@ static int __init init_mac80211_hwsim(void)
                         goto failed_hw;
                 }
 
-                printk(KERN_DEBUG "%s: hwaddr %s registered\n",
+                printk(KERN_DEBUG "%s: hwaddr %pM registered\n",
                        wiphy_name(hw->wiphy),
-                       print_mac(mac, hw->wiphy->perm_addr));
+                       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);