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-rw-r--r--drivers/net/wireless/iwlwifi/iwl-agn.c12
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-core.c1
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-scan.c2
-rw-r--r--drivers/net/wireless/iwlwifi/iwl3945-base.c17
-rw-r--r--include/linux/nl80211.h65
-rw-r--r--include/net/cfg80211.h131
-rw-r--r--include/net/mac80211.h6
-rw-r--r--include/net/wireless.h3
-rw-r--r--net/mac80211/cfg.c20
-rw-r--r--net/mac80211/ieee80211_i.h18
-rw-r--r--net/mac80211/iface.c2
-rw-r--r--net/mac80211/main.c32
-rw-r--r--net/mac80211/mlme.c37
-rw-r--r--net/mac80211/scan.c356
-rw-r--r--net/mac80211/wext.c59
-rw-r--r--net/wireless/Makefile2
-rw-r--r--net/wireless/core.c8
-rw-r--r--net/wireless/core.h20
-rw-r--r--net/wireless/nl80211.c323
-rw-r--r--net/wireless/nl80211.h8
-rw-r--r--net/wireless/scan.c807
21 files changed, 1546 insertions, 383 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index c196abc6db7a..539960da7e13 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -2678,11 +2678,19 @@ static void iwl_bss_info_changed(struct ieee80211_hw *hw,
}
-static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
+static int iwl_mac_hw_scan(struct ieee80211_hw *hw,
+ struct cfg80211_scan_request *req)
{
unsigned long flags;
struct iwl_priv *priv = hw->priv;
int ret;
+ u8 *ssid = NULL;
+ size_t ssid_len = 0;
+
+ if (req->n_ssids) {
+ ssid = req->ssids[0].ssid;
+ ssid_len = req->ssids[0].ssid_len;
+ }
IWL_DEBUG_MAC80211(priv, "enter\n");
@@ -2718,7 +2726,7 @@ static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
if (ssid_len) {
priv->one_direct_scan = 1;
- priv->direct_ssid_len = min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
+ priv->direct_ssid_len = ssid_len;
memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
} else {
priv->one_direct_scan = 0;
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index e18c3f326f71..260bf903cb71 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -1271,6 +1271,7 @@ int iwl_setup_mac(struct iwl_priv *priv)
BIT(NL80211_IFTYPE_ADHOC);
hw->wiphy->custom_regulatory = true;
+ hw->wiphy->max_scan_ssids = 1;
/* Default value; 4 EDCA QOS priorities */
hw->queues = 4;
diff --git a/drivers/net/wireless/iwlwifi/iwl-scan.c b/drivers/net/wireless/iwlwifi/iwl-scan.c
index 22bad3ce7d6a..1ec2b20eb37c 100644
--- a/drivers/net/wireless/iwlwifi/iwl-scan.c
+++ b/drivers/net/wireless/iwlwifi/iwl-scan.c
@@ -860,7 +860,7 @@ void iwl_bg_scan_completed(struct work_struct *work)
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
return;
- ieee80211_scan_completed(priv->hw);
+ ieee80211_scan_completed(priv->hw, false);
/* Since setting the TXPOWER may have been deferred while
* performing the scan, fire one off */
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index 42cc2884971c..0cd8cb96a5ef 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -4442,15 +4442,23 @@ static void iwl3945_bss_info_changed(struct ieee80211_hw *hw,
}
-static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
+static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw,
+ struct cfg80211_scan_request *req)
{
int rc = 0;
unsigned long flags;
struct iwl_priv *priv = hw->priv;
+ size_t len = 0;
+ u8 *ssid = NULL;
DECLARE_SSID_BUF(ssid_buf);
IWL_DEBUG_MAC80211(priv, "enter\n");
+ if (req->n_ssids) {
+ ssid = req->ssids[0].ssid;
+ len = req->ssids[0].ssid_len;
+ }
+
mutex_lock(&priv->mutex);
spin_lock_irqsave(&priv->lock, flags);
@@ -4478,9 +4486,8 @@ static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
print_ssid(ssid_buf, ssid, len), len);
priv->one_direct_scan = 1;
- priv->direct_ssid_len = (u8)
- min((u8) len, (u8) IW_ESSID_MAX_SIZE);
- memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
+ priv->direct_ssid_len = len;
+ memcpy(priv->direct_ssid, ssid, len);
} else
priv->one_direct_scan = 0;
@@ -5412,6 +5419,8 @@ static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
hw->wiphy->custom_regulatory = true;
+ hw->wiphy->max_scan_ssids = 1;
+
/* 4 EDCA QOS priorities */
hw->queues = 4;
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 4bc27049f4e5..8802d1bda382 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -143,6 +143,13 @@
* added to all specified management frames generated by
* kernel/firmware/driver.
*
+ * @NL80211_CMD_GET_SCAN: get scan results
+ * @NL80211_CMD_TRIGGER_SCAN: trigger a new scan with the given parameters
+ * @NL80211_CMD_NEW_SCAN_RESULTS: scan notification (as a reply to
+ * NL80211_CMD_GET_SCAN and on the "scan" multicast group)
+ * @NL80211_CMD_SCAN_ABORTED: scan was aborted, for unspecified reasons,
+ * partial scan results may be available
+ *
* @NL80211_CMD_MAX: highest used command number
* @__NL80211_CMD_AFTER_LAST: internal use
*/
@@ -192,6 +199,11 @@ enum nl80211_commands {
NL80211_CMD_GET_REG,
+ NL80211_CMD_GET_SCAN,
+ NL80211_CMD_TRIGGER_SCAN,
+ NL80211_CMD_NEW_SCAN_RESULTS,
+ NL80211_CMD_SCAN_ABORTED,
+
/* add new commands above here */
/* used to define NL80211_CMD_MAX below */
@@ -305,6 +317,18 @@ enum nl80211_commands {
* @NL80211_ATTR_IE: Information element(s) data (used, e.g., with
* %NL80211_CMD_SET_MGMT_EXTRA_IE).
*
+ * @NL80211_ATTR_MAX_NUM_SCAN_SSIDS: number of SSIDs you can scan with
+ * a single scan request, a wiphy attribute.
+ *
+ * @NL80211_ATTR_SCAN_FREQUENCIES: nested attribute with frequencies (in MHz)
+ * @NL80211_ATTR_SCAN_SSIDS: nested attribute with SSIDs, leave out for passive
+ * scanning and include a zero-length SSID (wildcard) for wildcard scan
+ * @NL80211_ATTR_SCAN_GENERATION: the scan generation increases whenever the
+ * scan result list changes (BSS expired or added) so that applications
+ * can verify that they got a single, consistent snapshot (when all dump
+ * messages carried the same generation number)
+ * @NL80211_ATTR_BSS: scan result BSS
+ *
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
@@ -372,6 +396,13 @@ enum nl80211_attrs {
NL80211_ATTR_MGMT_SUBTYPE,
NL80211_ATTR_IE,
+ NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
+
+ NL80211_ATTR_SCAN_FREQUENCIES,
+ NL80211_ATTR_SCAN_SSIDS,
+ NL80211_ATTR_SCAN_GENERATION,
+ NL80211_ATTR_BSS,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@@ -841,4 +872,38 @@ enum nl80211_channel_type {
NL80211_CHAN_HT40MINUS,
NL80211_CHAN_HT40PLUS
};
+
+/**
+ * enum nl80211_bss - netlink attributes for a BSS
+ *
+ * @__NL80211_BSS_INVALID: invalid
+ * @NL80211_BSS_FREQUENCY: frequency in MHz (u32)
+ * @NL80211_BSS_TSF: TSF of the received probe response/beacon (u64)
+ * @NL80211_BSS_BEACON_INTERVAL: beacon interval of the (I)BSS (u16)
+ * @NL80211_BSS_CAPABILITY: capability field (CPU order, u16)
+ * @NL80211_BSS_INFORMATION_ELEMENTS: binary attribute containing the
+ * raw information elements from the probe response/beacon (bin)
+ * @NL80211_BSS_SIGNAL_MBM: signal strength of probe response/beacon
+ * in mBm (100 * dBm) (s32)
+ * @NL80211_BSS_SIGNAL_UNSPEC: signal strength of the probe response/beacon
+ * in unspecified units, scaled to 0..100 (u8)
+ * @__NL80211_BSS_AFTER_LAST: internal
+ * @NL80211_BSS_MAX: highest BSS attribute
+ */
+enum nl80211_bss {
+ __NL80211_BSS_INVALID,
+ NL80211_BSS_BSSID,
+ NL80211_BSS_FREQUENCY,
+ NL80211_BSS_TSF,
+ NL80211_BSS_BEACON_INTERVAL,
+ NL80211_BSS_CAPABILITY,
+ NL80211_BSS_INFORMATION_ELEMENTS,
+ NL80211_BSS_SIGNAL_MBM,
+ NL80211_BSS_SIGNAL_UNSPEC,
+
+ /* keep last */
+ __NL80211_BSS_AFTER_LAST,
+ NL80211_BSS_MAX = __NL80211_BSS_AFTER_LAST - 1
+};
+
#endif /* __LINUX_NL80211_H */
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index dd1fd51638fc..09a0b268e5cf 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -4,6 +4,10 @@
#include <linux/netlink.h>
#include <linux/skbuff.h>
#include <linux/nl80211.h>
+#include <linux/if_ether.h>
+#include <linux/ieee80211.h>
+#include <linux/wireless.h>
+#include <net/iw_handler.h>
#include <net/genetlink.h>
/* remove once we remove the wext stuff */
#include <net/iw_handler.h>
@@ -505,6 +509,83 @@ struct wiphy;
struct ieee80211_channel;
/**
+ * struct cfg80211_ssid - SSID description
+ * @ssid: the SSID
+ * @ssid_len: length of the ssid
+ */
+struct cfg80211_ssid {
+ u8 ssid[IEEE80211_MAX_SSID_LEN];
+ u8 ssid_len;
+};
+
+/**
+ * struct cfg80211_scan_request - scan request description
+ *
+ * @ssids: SSIDs to scan for (active scan only)
+ * @n_ssids: number of SSIDs
+ * @channels: channels to scan on.
+ * @n_channels: number of channels for each band
+ * @wiphy: the wiphy this was for
+ * @ifidx: the interface index
+ */
+struct cfg80211_scan_request {
+ struct cfg80211_ssid *ssids;
+ int n_ssids;
+ struct ieee80211_channel **channels;
+ u32 n_channels;
+
+ /* internal */
+ struct wiphy *wiphy;
+ int ifidx;
+};
+
+/**
+ * enum cfg80211_signal_type - signal type
+ *
+ * @CFG80211_SIGNAL_TYPE_NONE: no signal strength information available
+ * @CFG80211_SIGNAL_TYPE_MBM: signal strength in mBm (100*dBm)
+ * @CFG80211_SIGNAL_TYPE_UNSPEC: signal strength, increasing from 0 through 100
+ */
+enum cfg80211_signal_type {
+ CFG80211_SIGNAL_TYPE_NONE,
+ CFG80211_SIGNAL_TYPE_MBM,
+ CFG80211_SIGNAL_TYPE_UNSPEC,
+};
+
+/**
+ * struct cfg80211_bss - BSS description
+ *
+ * This structure describes a BSS (which may also be a mesh network)
+ * for use in scan results and similar.
+ *
+ * @bssid: BSSID of the BSS
+ * @tsf: timestamp of last received update
+ * @beacon_interval: the beacon interval as from the frame
+ * @capability: the capability field in host byte order
+ * @information_elements: the information elements (Note that there
+ * is no guarantee that these are well-formed!)
+ * @len_information_elements: total length of the information elements
+ * @signal: signal strength value
+ * @signal_type: signal type
+ * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes
+ */
+struct cfg80211_bss {
+ struct ieee80211_channel *channel;
+
+ u8 bssid[ETH_ALEN];
+ u64 tsf;
+ u16 beacon_interval;
+ u16 capability;
+ u8 *information_elements;
+ size_t len_information_elements;
+
+ s32 signal;
+ enum cfg80211_signal_type signal_type;
+
+ u8 priv[0] __attribute__((__aligned__(sizeof(void *))));
+};
+
+/**
* struct cfg80211_ops - backend description for wireless configuration
*
* This struct is registered by fullmac card drivers and/or wireless stacks
@@ -571,6 +652,11 @@ struct ieee80211_channel;
* @set_channel: Set channel
*
* @set_mgmt_extra_ie: Set extra IE data for management frames
+ *
+ * @scan: Request to do a scan. If returning zero, the scan request is given
+ * the driver, and will be valid until passed to cfg80211_scan_done().
+ * For scan results, call cfg80211_inform_bss(); you can call this outside
+ * the scan/scan_done bracket too.
*/
struct cfg80211_ops {
int (*suspend)(struct wiphy *wiphy);
@@ -648,6 +734,9 @@ struct cfg80211_ops {
int (*set_mgmt_extra_ie)(struct wiphy *wiphy,
struct net_device *dev,
struct mgmt_extra_ie_params *params);
+
+ int (*scan)(struct wiphy *wiphy, struct net_device *dev,
+ struct cfg80211_scan_request *request);
};
/* temporary wext handlers */
@@ -658,5 +747,47 @@ int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
u32 *mode, char *extra);
int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
u32 *mode, char *extra);
+int cfg80211_wext_siwscan(struct net_device *dev,
+ struct iw_request_info *info,
+ union iwreq_data *wrqu, char *extra);
+int cfg80211_wext_giwscan(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *extra);
+
+/**
+ * cfg80211_scan_done - notify that scan finished
+ *
+ * @request: the corresponding scan request
+ * @aborted: set to true if the scan was aborted for any reason,
+ * userspace will be notified of that
+ */
+void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted);
+
+/**
+ * cfg80211_inform_bss - inform cfg80211 of a new BSS
+ *
+ * @wiphy: the wiphy reporting the BSS
+ * @bss: the found BSS
+ * @gfp: context flags
+ *
+ * This informs cfg80211 that BSS information was found and
+ * the BSS should be updated/added.
+ */
+struct cfg80211_bss*
+cfg80211_inform_bss_frame(struct wiphy *wiphy,
+ struct ieee80211_channel *channel,
+ struct ieee80211_mgmt *mgmt, size_t len,
+ s32 signal, enum cfg80211_signal_type sigtype,
+ gfp_t gfp);
+
+struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy,
+ struct ieee80211_channel *channel,
+ const u8 *bssid,
+ const u8 *ssid, size_t ssid_len);
+struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy,
+ struct ieee80211_channel *channel,
+ const u8 *meshid, size_t meshidlen,
+ const u8 *meshcfg);
+void cfg80211_put_bss(struct cfg80211_bss *bss);
#endif /* __NET_CFG80211_H */
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 341f3e595ebd..88fa3e03e3e9 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1406,7 +1406,8 @@ struct ieee80211_ops {
void (*update_tkip_key)(struct ieee80211_hw *hw,
struct ieee80211_key_conf *conf, const u8 *address,
u32 iv32, u16 *phase1key);
- int (*hw_scan)(struct ieee80211_hw *hw, u8 *ssid, size_t len);
+ int (*hw_scan)(struct ieee80211_hw *hw,
+ struct cfg80211_scan_request *req);
int (*get_stats)(struct ieee80211_hw *hw,
struct ieee80211_low_level_stats *stats);
void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx,
@@ -1844,8 +1845,9 @@ void ieee80211_wake_queues(struct ieee80211_hw *hw);
* mac80211 that the scan finished.
*
* @hw: the hardware that finished the scan
+ * @aborted: set to true if scan was aborted
*/
-void ieee80211_scan_completed(struct ieee80211_hw *hw);
+void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted);
/**
* ieee80211_iterate_active_interfaces - iterate active interfaces
diff --git a/include/net/wireless.h b/include/net/wireless.h
index a42c1562d52b..1c6285eb1666 100644
--- a/include/net/wireless.h
+++ b/include/net/wireless.h
@@ -213,6 +213,9 @@ struct wiphy {
bool custom_regulatory;
bool strict_regulatory;
+ int bss_priv_size;
+ u8 max_scan_ssids;
+
/* If multiple wiphys are registered and you're handed e.g.
* a regular netdev with assigned ieee80211_ptr, you won't
* know whether it points to a wiphy your driver has registered
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 42d692fd9bec..c8d969be440b 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1277,6 +1277,25 @@ static int ieee80211_resume(struct wiphy *wiphy)
#define ieee80211_resume NULL
#endif
+static int ieee80211_scan(struct wiphy *wiphy,
+ struct net_device *dev,
+ struct cfg80211_scan_request *req)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ if (!netif_running(dev))
+ return -ENETDOWN;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (sdata->vif.type != NL80211_IFTYPE_STATION &&
+ sdata->vif.type != NL80211_IFTYPE_ADHOC &&
+ sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
+ return -EOPNOTSUPP;
+
+ return ieee80211_request_scan(sdata, req);
+}
+
struct cfg80211_ops mac80211_config_ops = {
.add_virtual_intf = ieee80211_add_iface,
.del_virtual_intf = ieee80211_del_iface,
@@ -1309,4 +1328,5 @@ struct cfg80211_ops mac80211_config_ops = {
.set_mgmt_extra_ie = ieee80211_set_mgmt_extra_ie,
.suspend = ieee80211_suspend,
.resume = ieee80211_resume,
+ .scan = ieee80211_scan,
};
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 9122416fd6af..cbc0b7d647f9 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -294,8 +294,6 @@ struct ieee80211_if_sta {
u8 ssid[IEEE80211_MAX_SSID_LEN];
enum ieee80211_sta_mlme_state state;
size_t ssid_len;
- u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
- size_t scan_ssid_len;
u16 aid;
u16 ap_capab, capab;
u8 *extra_ie; /* to be added to the end of AssocReq */
@@ -658,17 +656,18 @@ struct ieee80211_local {
/* Scanning and BSS list */
bool sw_scanning, hw_scanning;
+ struct cfg80211_ssid scan_ssid;
+ struct cfg80211_scan_request int_scan_req;
+ struct cfg80211_scan_request *scan_req;
+ struct ieee80211_channel *scan_channel;
int scan_channel_idx;
- enum ieee80211_band scan_band;
enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
unsigned long last_scan_completed;
struct delayed_work scan_work;
struct ieee80211_sub_if_data *scan_sdata;
- struct ieee80211_channel *oper_channel, *scan_channel, *csa_channel;
enum nl80211_channel_type oper_channel_type;
- u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
- size_t scan_ssid_len;
+ struct ieee80211_channel *oper_channel, *csa_channel;
struct list_head bss_list;
struct ieee80211_bss *bss_hash[STA_HASH_SIZE];
spinlock_t bss_lock;
@@ -929,7 +928,7 @@ void ieee80211_send_pspoll(struct ieee80211_local *local,
/* scan/BSS handling */
int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
- u8 *ssid, size_t ssid_len);
+ struct cfg80211_scan_request *req);
int ieee80211_scan_results(struct ieee80211_local *local,
struct iw_request_info *info,
char *buf, size_t len);
@@ -944,14 +943,15 @@ int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata,
void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata,
- u8 *ssid, size_t ssid_len);
+ struct cfg80211_scan_request *req);
struct ieee80211_bss *
ieee80211_bss_info_update(struct ieee80211_local *local,
struct ieee80211_rx_status *rx_status,
struct ieee80211_mgmt *mgmt,
size_t len,
struct ieee802_11_elems *elems,
- int freq, bool beacon);
+ struct ieee80211_channel *channel,
+ bool beacon);
struct ieee80211_bss *
ieee80211_rx_bss_add(struct ieee80211_local *local, u8 *bssid, int freq,
u8 *ssid, u8 ssid_len);
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 1c17fb8e4058..df94b9365264 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -522,7 +522,7 @@ static int ieee80211_stop(struct net_device *dev)
* scan event to userspace -- the scan is incomplete.
*/
if (local->sw_scanning)
- ieee80211_scan_completed(&local->hw);
+ ieee80211_scan_completed(&local->hw, true);
}
conf.vif = &sdata->vif;
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 956afea4214d..954edfbb6b6f 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -733,6 +733,7 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
return NULL;
wiphy->privid = mac80211_wiphy_privid;
+ wiphy->max_scan_ssids = 4;
local = wiphy_priv(wiphy);
local->hw.wiphy = wiphy;
@@ -817,25 +818,33 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
enum ieee80211_band band;
struct net_device *mdev;
struct ieee80211_master_priv *mpriv;
+ int channels, i, j;
/*
* generic code guarantees at least one band,
* set this very early because much code assumes
* that hw.conf.channel is assigned
*/
+ channels = 0;
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
struct ieee80211_supported_band *sband;
sband = local->hw.wiphy->bands[band];
- if (sband) {
+ if (sband && !local->oper_channel) {
/* init channel we're on */
local->hw.conf.channel =
local->oper_channel =
local->scan_channel = &sband->channels[0];
- break;
}
+ if (sband)
+ channels += sband->n_channels;
}
+ local->int_scan_req.n_channels = channels;
+ local->int_scan_req.channels = kzalloc(sizeof(void *) * channels, GFP_KERNEL);
+ if (!local->int_scan_req.channels)
+ return -ENOMEM;
+
/* if low-level driver supports AP, we also support VLAN */
if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP))
local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
@@ -845,7 +854,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
result = wiphy_register(local->hw.wiphy);
if (result < 0)
- return result;
+ goto fail_wiphy_register;
/*
* We use the number of queues for feature tests (QoS, HT) internally
@@ -948,6 +957,20 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
ieee80211_led_init(local);
+ /* alloc internal scan request */
+ i = 0;
+ local->int_scan_req.ssids = &local->scan_ssid;
+ local->int_scan_req.n_ssids = 1;
+ for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+ if (!hw->wiphy->bands[band])
+ continue;
+ for (j = 0; j < hw->wiphy->bands[band]->n_channels; j++) {
+ local->int_scan_req.channels[i] =
+ &hw->wiphy->bands[band]->channels[j];
+ i++;
+ }
+ }
+
return 0;
fail_wep:
@@ -966,6 +989,8 @@ fail_workqueue:
free_netdev(local->mdev);
fail_mdev_alloc:
wiphy_unregister(local->hw.wiphy);
+fail_wiphy_register:
+ kfree(local->int_scan_req.channels);
return result;
}
EXPORT_SYMBOL(ieee80211_register_hw);
@@ -1011,6 +1036,7 @@ void ieee80211_unregister_hw(struct ieee80211_hw *hw)
ieee80211_wep_free(local);
ieee80211_led_exit(local);
free_netdev(local->mdev);
+ kfree(local->int_scan_req.channels);
}
EXPORT_SYMBOL(ieee80211_unregister_hw);
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index bfc47b330687..46b4817cdea9 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1743,7 +1743,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
}
bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
- freq, beacon);
+ channel, beacon);
if (!bss)
return;
@@ -2162,7 +2162,15 @@ static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata,
printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other "
"IBSS networks with same SSID (merge)\n", sdata->dev->name);
- ieee80211_request_scan(sdata, ifsta->ssid, ifsta->ssid_len);
+
+ /* XXX maybe racy? */
+ if (sdata->local->scan_req)
+ return;
+
+ memcpy(sdata->local->int_scan_req.ssids[0].ssid,
+ ifsta->ssid, IEEE80211_MAX_SSID_LEN);
+ sdata->local->int_scan_req.ssids[0].ssid_len = ifsta->ssid_len;
+ ieee80211_request_scan(sdata, &sdata->local->int_scan_req);
}
@@ -2378,8 +2386,15 @@ dont_join:
IEEE80211_SCAN_INTERVAL)) {
printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to "
"join\n", sdata->dev->name);
- return ieee80211_request_scan(sdata, ifsta->ssid,
- ifsta->ssid_len);
+
+ /* XXX maybe racy? */
+ if (local->scan_req)
+ return -EBUSY;
+
+ memcpy(local->int_scan_req.ssids[0].ssid,
+ ifsta->ssid, IEEE80211_MAX_SSID_LEN);
+ local->int_scan_req.ssids[0].ssid_len = ifsta->ssid_len;
+ return ieee80211_request_scan(sdata, &local->int_scan_req);
} else if (ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED) {
int interval = IEEE80211_SCAN_INTERVAL;
@@ -2478,11 +2493,16 @@ static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata,
} else {
if (ifsta->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) {
ifsta->assoc_scan_tries++;
+ /* XXX maybe racy? */
+ if (local->scan_req)
+ return -1;
+ memcpy(local->int_scan_req.ssids[0].ssid,
+ ifsta->ssid, IEEE80211_MAX_SSID_LEN);
if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL)
- ieee80211_start_scan(sdata, NULL, 0);
+ local->int_scan_req.ssids[0].ssid_len = 0;
else
- ieee80211_start_scan(sdata, ifsta->ssid,
- ifsta->ssid_len);
+ local->int_scan_req.ssids[0].ssid_len = ifsta->ssid_len;
+ ieee80211_start_scan(sdata, &local->int_scan_req);
ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE;
set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
} else {
@@ -2520,8 +2540,7 @@ static void ieee80211_sta_work(struct work_struct *work)
ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE &&
ifsta->state != IEEE80211_STA_MLME_ASSOCIATE &&
test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) {
- ieee80211_start_scan(sdata, ifsta->scan_ssid,
- ifsta->scan_ssid_len);
+ ieee80211_start_scan(sdata, local->scan_req);
return;
}
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index eddca4e1e13c..c6b275b10cf9 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -13,6 +13,9 @@
*/
/* TODO:
+ * figure out how to avoid that the "current BSS" expires
+ * clean up IBSS code (in MLME), see why it adds a BSS to the list
+ * use cfg80211's BSS handling (depends on IBSS TODO above)
* order BSS list by RSSI(?) ("quality of AP")
* scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
* SSID)
@@ -225,10 +228,26 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
struct ieee80211_mgmt *mgmt,
size_t len,
struct ieee802_11_elems *elems,
- int freq, bool beacon)
+ struct ieee80211_channel *channel,
+ bool beacon)
{
struct ieee80211_bss *bss;
- int clen;
+ int clen, freq = channel->center_freq;
+ enum cfg80211_signal_type sigtype = CFG80211_SIGNAL_TYPE_NONE;
+ s32 signal = 0;
+
+ if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
+ sigtype = CFG80211_SIGNAL_TYPE_MBM;
+ signal = rx_status->signal * 100;
+ } else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) {
+ sigtype = CFG80211_SIGNAL_TYPE_UNSPEC;
+ signal = (rx_status->signal * 100) / local->hw.max_signal;
+ }
+
+ cfg80211_put_bss(
+ cfg80211_inform_bss_frame(local->hw.wiphy, channel,
+ mgmt, len, signal, sigtype,
+ GFP_ATOMIC));
#ifdef CONFIG_MAC80211_MESH
if (elems->mesh_config)
@@ -401,7 +420,7 @@ ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
bss = ieee80211_bss_info_update(sdata->local, rx_status,
mgmt, skb->len, &elems,
- freq, beacon);
+ channel, beacon);
if (bss)
ieee80211_rx_bss_put(sdata->local, bss);
@@ -439,26 +458,22 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local,
ieee80211_tx_skb(sdata, skb, 0);
}
-void ieee80211_scan_completed(struct ieee80211_hw *hw)
+void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata;
- union iwreq_data wrqu;
if (WARN_ON(!local->hw_scanning && !local->sw_scanning))
return;
- local->last_scan_completed = jiffies;
- memset(&wrqu, 0, sizeof(wrqu));
+ if (WARN_ON(!local->scan_req))
+ return;
- /*
- * local->scan_sdata could have been NULLed by the interface
- * down code in case we were scanning on an interface that is
- * being taken down.
- */
- sdata = local->scan_sdata;
- if (sdata)
- wireless_send_event(sdata->dev, SIOCGIWSCAN, &wrqu, NULL);
+ if (local->scan_req != &local->int_scan_req)
+ cfg80211_scan_done(local->scan_req, aborted);
+ local->scan_req = NULL;
+
+ local->last_scan_completed = jiffies;
if (local->hw_scanning) {
local->hw_scanning = false;
@@ -520,9 +535,8 @@ void ieee80211_scan_work(struct work_struct *work)
struct ieee80211_local *local =
container_of(work, struct ieee80211_local, scan_work.work);
struct ieee80211_sub_if_data *sdata = local->scan_sdata;
- struct ieee80211_supported_band *sband;
struct ieee80211_channel *chan;
- int skip;
+ int skip, i;
unsigned long next_delay = 0;
/*
@@ -533,33 +547,13 @@ void ieee80211_scan_work(struct work_struct *work)
switch (local->scan_state) {
case SCAN_SET_CHANNEL:
- /*
- * Get current scan band. scan_band may be IEEE80211_NUM_BANDS
- * after we successfully scanned the last channel of the last
- * band (and the last band is supported by the hw)
- */
- if (local->scan_band < IEEE80211_NUM_BANDS)
- sband = local->hw.wiphy->bands[local->scan_band];
- else
- sband = NULL;
-
- /*
- * If we are at an unsupported band and have more bands
- * left to scan, advance to the next supported one.
- */
- while (!sband && local->scan_band < IEEE80211_NUM_BANDS - 1) {
- local->scan_band++;
- sband = local->hw.wiphy->bands[local->scan_band];
- local->scan_channel_idx = 0;
- }
-
/* if no more bands/channels left, complete scan */
- if (!sband || local->scan_channel_idx >= sband->n_channels) {
- ieee80211_scan_completed(local_to_hw(local));
+ if (local->scan_channel_idx >= local->scan_req->n_channels) {
+ ieee80211_scan_completed(local_to_hw(local), false);
return;
}
skip = 0;
- chan = &sband->channels[local->scan_channel_idx];
+ chan = local->scan_req->channels[local->scan_channel_idx];
if (chan->flags & IEEE80211_CHAN_DISABLED ||
(sdata->vif.type == NL80211_IFTYPE_ADHOC &&
@@ -575,15 +569,6 @@ void ieee80211_scan_work(struct work_struct *work)
/* advance state machine to next channel/band */
local->scan_channel_idx++;
- if (local->scan_channel_idx >= sband->n_channels) {
- /*
- * scan_band may end up == IEEE80211_NUM_BANDS, but
- * we'll catch that case above and complete the scan
- * if that is the case.
- */
- local->scan_band++;
- local->scan_channel_idx = 0;
- }
if (skip)
break;
@@ -596,10 +581,14 @@ void ieee80211_scan_work(struct work_struct *work)
next_delay = IEEE80211_PASSIVE_CHANNEL_TIME;
local->scan_state = SCAN_SET_CHANNEL;
- if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN)
+ if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN ||
+ !local->scan_req->n_ssids)
break;
- ieee80211_send_probe_req(sdata, NULL, local->scan_ssid,
- local->scan_ssid_len);
+ for (i = 0; i < local->scan_req->n_ssids; i++)
+ ieee80211_send_probe_req(
+ sdata, NULL,
+ local->scan_req->ssids[i].ssid,
+ local->scan_req->ssids[i].ssid_len);
next_delay = IEEE80211_CHANNEL_TIME;
break;
}
@@ -610,14 +599,19 @@ void ieee80211_scan_work(struct work_struct *work)
int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata,
- u8 *ssid, size_t ssid_len)
+ struct cfg80211_scan_request *req)
{
struct ieee80211_local *local = scan_sdata->local;
struct ieee80211_sub_if_data *sdata;
- if (ssid_len > IEEE80211_MAX_SSID_LEN)
+ if (!req)
return -EINVAL;
+ if (local->scan_req && local->scan_req != req)
+ return -EBUSY;
+
+ local->scan_req = req;
+
/* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
* BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
* BSSID: MACAddress
@@ -645,7 +639,7 @@ int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata,
int rc;
local->hw_scanning = true;
- rc = local->ops->hw_scan(local_to_hw(local), ss