* IOCTL handlers as well as command preperation and response routines
* for sending scan commands to the firmware.
*/
-#include <linux/ctype.h>
-#include <linux/if.h>
-#include <linux/netdevice.h>
-#include <linux/wireless.h>
-
-#include <net/ieee80211.h>
-#include <net/iw_handler.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/etherdevice.h>
+#include <linux/if_arp.h>
+#include <asm/unaligned.h>
+#include <net/lib80211.h>
#include "host.h"
-#include "decl.h"
#include "dev.h"
#include "scan.h"
+#include "assoc.h"
+#include "wext.h"
+#include "cmd.h"
//! Approximate amount of data needed to pass a scan result back to iwlist
#define MAX_SCAN_CELL_SIZE (IW_EV_ADDR_LEN \
- + IW_ESSID_MAX_SIZE \
+ + IEEE80211_MAX_SSID_LEN \
+ IW_EV_UINT_LEN \
+ IW_EV_FREQ_LEN \
+ IW_EV_QUAL_LEN \
- + IW_ESSID_MAX_SIZE \
+ + IEEE80211_MAX_SSID_LEN \
+ IW_EV_PARAM_LEN \
+ 40) /* 40 for WPAIE */
//! Memory needed to store a max sized channel List TLV for a firmware scan
-#define CHAN_TLV_MAX_SIZE (sizeof(struct mrvlietypesheader) \
+#define CHAN_TLV_MAX_SIZE (sizeof(struct mrvl_ie_header) \
+ (MRVDRV_MAX_CHANNELS_PER_SCAN \
* sizeof(struct chanscanparamset)))
//! Memory needed to store a max number/size SSID TLV for a firmware scan
-#define SSID_TLV_MAX_SIZE (1 * sizeof(struct mrvlietypes_ssidparamset))
+#define SSID_TLV_MAX_SIZE (1 * sizeof(struct mrvl_ie_ssid_param_set))
-//! Maximum memory needed for a wlan_scan_cmd_config with all TLVs at max
-#define MAX_SCAN_CFG_ALLOC (sizeof(struct wlan_scan_cmd_config) \
- + sizeof(struct mrvlietypes_numprobes) \
- + CHAN_TLV_MAX_SIZE \
- + SSID_TLV_MAX_SIZE)
+//! Maximum memory needed for a cmd_ds_802_11_scan with all TLVs at max
+#define MAX_SCAN_CFG_ALLOC (sizeof(struct cmd_ds_802_11_scan) \
+ + CHAN_TLV_MAX_SIZE + SSID_TLV_MAX_SIZE)
//! The maximum number of channels the firmware can scan per command
#define MRVDRV_MAX_CHANNELS_PER_SCAN 14
//! Scan time specified in the channel TLV for each channel for active scans
#define MRVDRV_ACTIVE_SCAN_CHAN_TIME 100
-//! Macro to enable/disable SSID checking before storing a scan table
-#ifdef DISCARD_BAD_SSID
-#define CHECK_SSID_IS_VALID(x) ssid_valid(&bssidEntry.ssid)
-#else
-#define CHECK_SSID_IS_VALID(x) 1
-#endif
+#define DEFAULT_MAX_SCAN_AGE (15 * HZ)
+
+static int lbs_ret_80211_scan(struct lbs_private *priv, unsigned long dummy,
+ struct cmd_header *resp);
+
+/*********************************************************************/
+/* */
+/* Misc helper functions */
+/* */
+/*********************************************************************/
/**
- * @brief Check if a scanned network compatible with the driver settings
+ * @brief Unsets the MSB on basic rates
*
- * WEP WPA WPA2 ad-hoc encrypt Network
- * enabled enabled enabled AES mode privacy WPA WPA2 Compatible
- * 0 0 0 0 NONE 0 0 0 yes No security
- * 1 0 0 0 NONE 1 0 0 yes Static WEP
- * 0 1 0 0 x 1x 1 x yes WPA
- * 0 0 1 0 x 1x x 1 yes WPA2
- * 0 0 0 1 NONE 1 0 0 yes Ad-hoc AES
- * 0 0 0 0 !=NONE 1 0 0 yes Dynamic WEP
+ * Scan through an array and unset the MSB for basic data rates.
*
- *
- * @param adapter A pointer to wlan_adapter
- * @param index Index in scantable to check against current driver settings
- * @param mode Network mode: Infrastructure or IBSS
- *
- * @return Index in scantable, or error code if negative
+ * @param rates buffer of data rates
+ * @param len size of buffer
*/
-static int is_network_compatible(wlan_adapter * adapter, int index, u8 mode)
+static void lbs_unset_basic_rate_flags(u8 *rates, size_t len)
{
- lbs_deb_enter(LBS_DEB_ASSOC);
-
- if (adapter->scantable[index].mode == mode) {
- if ( !adapter->secinfo.wep_enabled
- && !adapter->secinfo.WPAenabled
- && !adapter->secinfo.WPA2enabled
- && adapter->scantable[index].wpa_ie[0] != WPA_IE
- && adapter->scantable[index].rsn_ie[0] != WPA2_IE
- && !adapter->scantable[index].privacy) {
- /* no security */
- goto done;
- } else if ( adapter->secinfo.wep_enabled
- && !adapter->secinfo.WPAenabled
- && !adapter->secinfo.WPA2enabled
- && adapter->scantable[index].privacy) {
- /* static WEP enabled */
- goto done;
- } else if ( !adapter->secinfo.wep_enabled
- && adapter->secinfo.WPAenabled
- && !adapter->secinfo.WPA2enabled
- && (adapter->scantable[index].wpa_ie[0] == WPA_IE)
- /* privacy bit may NOT be set in some APs like LinkSys WRT54G
- && adapter->scantable[index].privacy */
- ) {
- /* WPA enabled */
- lbs_deb_scan(
- "is_network_compatible() WPA: index=%d wpa_ie=%#x "
- "wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s "
- "privacy=%#x\n", index,
- adapter->scantable[index].wpa_ie[0],
- adapter->scantable[index].rsn_ie[0],
- adapter->secinfo.wep_enabled ? "e" : "d",
- adapter->secinfo.WPAenabled ? "e" : "d",
- adapter->secinfo.WPA2enabled ? "e" : "d",
- adapter->scantable[index].privacy);
- goto done;
- } else if ( !adapter->secinfo.wep_enabled
- && !adapter->secinfo.WPAenabled
- && adapter->secinfo.WPA2enabled
- && (adapter->scantable[index].rsn_ie[0] == WPA2_IE)
- /* privacy bit may NOT be set in some APs like LinkSys WRT54G
- && adapter->scantable[index].privacy */
- ) {
- /* WPA2 enabled */
- lbs_deb_scan(
- "is_network_compatible() WPA2: index=%d wpa_ie=%#x "
- "wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s "
- "privacy=%#x\n", index,
- adapter->scantable[index].wpa_ie[0],
- adapter->scantable[index].rsn_ie[0],
- adapter->secinfo.wep_enabled ? "e" : "d",
- adapter->secinfo.WPAenabled ? "e" : "d",
- adapter->secinfo.WPA2enabled ? "e" : "d",
- adapter->scantable[index].privacy);
- goto done;
- } else if ( !adapter->secinfo.wep_enabled
- && !adapter->secinfo.WPAenabled
- && !adapter->secinfo.WPA2enabled
- && (adapter->scantable[index].wpa_ie[0] != WPA_IE)
- && (adapter->scantable[index].rsn_ie[0] != WPA2_IE)
- && adapter->scantable[index].privacy) {
- /* dynamic WEP enabled */
- lbs_deb_scan(
- "is_network_compatible() dynamic WEP: index=%d "
- "wpa_ie=%#x wpa2_ie=%#x privacy=%#x\n",
- index,
- adapter->scantable[index].wpa_ie[0],
- adapter->scantable[index].rsn_ie[0],
- adapter->scantable[index].privacy);
- goto done;
- }
+ int i;
- /* security doesn't match */
- lbs_deb_scan(
- "is_network_compatible() FAILED: index=%d wpa_ie=%#x "
- "wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s privacy=%#x\n",
- index,
- adapter->scantable[index].wpa_ie[0],
- adapter->scantable[index].rsn_ie[0],
- adapter->secinfo.wep_enabled ? "e" : "d",
- adapter->secinfo.WPAenabled ? "e" : "d",
- adapter->secinfo.WPA2enabled ? "e" : "d",
- adapter->scantable[index].privacy);
- index = -ECONNREFUSED;
- goto done;
- }
+ for (i = 0; i < len; i++)
+ rates[i] &= 0x7f;
+}
- /* mode doesn't match */
- index = -ENETUNREACH;
-done:
- lbs_deb_leave_args(LBS_DEB_SCAN, "index %d", index);
- return index;
+static inline void clear_bss_descriptor(struct bss_descriptor *bss)
+{
+ /* Don't blow away ->list, just BSS data */
+ memset(bss, 0, offsetof(struct bss_descriptor, list));
}
/**
- * @brief This function validates a SSID as being able to be printed
+ * @brief Compare two SSIDs
*
- * @param pssid SSID structure to validate
+ * @param ssid1 A pointer to ssid to compare
+ * @param ssid2 A pointer to ssid to compare
*
- * @return TRUE or FALSE
+ * @return 0: ssid is same, otherwise is different
*/
-static u8 ssid_valid(struct WLAN_802_11_SSID *pssid)
+int lbs_ssid_cmp(uint8_t *ssid1, uint8_t ssid1_len, uint8_t *ssid2,
+ uint8_t ssid2_len)
{
- int ssididx;
+ if (ssid1_len != ssid2_len)
+ return -1;
- for (ssididx = 0; ssididx < pssid->ssidlength; ssididx++) {
- if (!isprint(pssid->ssid[ssididx])) {
- return 0;
- }
- }
+ return memcmp(ssid1, ssid2, ssid1_len);
+}
- return 1;
+static inline int is_same_network(struct bss_descriptor *src,
+ struct bss_descriptor *dst)
+{
+ /* A network is only a duplicate if the channel, BSSID, and ESSID
+ * all match. We treat all <hidden> with the same BSSID and channel
+ * as one network */
+ return ((src->ssid_len == dst->ssid_len) &&
+ (src->channel == dst->channel) &&
+ !compare_ether_addr(src->bssid, dst->bssid) &&
+ !memcmp(src->ssid, dst->ssid, src->ssid_len));
}
+
+
+/*********************************************************************/
+/* */
+/* Region channel support */
+/* */
+/*********************************************************************/
+
+#define LBS_TX_PWR_DEFAULT 20 /*100mW */
+#define LBS_TX_PWR_US_DEFAULT 20 /*100mW */
+#define LBS_TX_PWR_JP_DEFAULT 16 /*50mW */
+#define LBS_TX_PWR_FR_DEFAULT 20 /*100mW */
+#define LBS_TX_PWR_EMEA_DEFAULT 20 /*100mW */
+
+/* Format { channel, frequency (MHz), maxtxpower } */
+/* band: 'B/G', region: USA FCC/Canada IC */
+static struct chan_freq_power channel_freq_power_US_BG[] = {
+ {1, 2412, LBS_TX_PWR_US_DEFAULT},
+ {2, 2417, LBS_TX_PWR_US_DEFAULT},
+ {3, 2422, LBS_TX_PWR_US_DEFAULT},
+ {4, 2427, LBS_TX_PWR_US_DEFAULT},
+ {5, 2432, LBS_TX_PWR_US_DEFAULT},
+ {6, 2437, LBS_TX_PWR_US_DEFAULT},
+ {7, 2442, LBS_TX_PWR_US_DEFAULT},
+ {8, 2447, LBS_TX_PWR_US_DEFAULT},
+ {9, 2452, LBS_TX_PWR_US_DEFAULT},
+ {10, 2457, LBS_TX_PWR_US_DEFAULT},
+ {11, 2462, LBS_TX_PWR_US_DEFAULT}
+};
+
+/* band: 'B/G', region: Europe ETSI */
+static struct chan_freq_power channel_freq_power_EU_BG[] = {
+ {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
+ {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
+ {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
+ {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
+ {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
+ {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
+ {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
+ {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
+ {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
+ {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
+ {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
+ {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
+ {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
+};
+
+/* band: 'B/G', region: Spain */
+static struct chan_freq_power channel_freq_power_SPN_BG[] = {
+ {10, 2457, LBS_TX_PWR_DEFAULT},
+ {11, 2462, LBS_TX_PWR_DEFAULT}
+};
+
+/* band: 'B/G', region: France */
+static struct chan_freq_power channel_freq_power_FR_BG[] = {
+ {10, 2457, LBS_TX_PWR_FR_DEFAULT},
+ {11, 2462, LBS_TX_PWR_FR_DEFAULT},
+ {12, 2467, LBS_TX_PWR_FR_DEFAULT},
+ {13, 2472, LBS_TX_PWR_FR_DEFAULT}
+};
+
+/* band: 'B/G', region: Japan */
+static struct chan_freq_power channel_freq_power_JPN_BG[] = {
+ {1, 2412, LBS_TX_PWR_JP_DEFAULT},
+ {2, 2417, LBS_TX_PWR_JP_DEFAULT},
+ {3, 2422, LBS_TX_PWR_JP_DEFAULT},
+ {4, 2427, LBS_TX_PWR_JP_DEFAULT},
+ {5, 2432, LBS_TX_PWR_JP_DEFAULT},
+ {6, 2437, LBS_TX_PWR_JP_DEFAULT},
+ {7, 2442, LBS_TX_PWR_JP_DEFAULT},
+ {8, 2447, LBS_TX_PWR_JP_DEFAULT},
+ {9, 2452, LBS_TX_PWR_JP_DEFAULT},
+ {10, 2457, LBS_TX_PWR_JP_DEFAULT},
+ {11, 2462, LBS_TX_PWR_JP_DEFAULT},
+ {12, 2467, LBS_TX_PWR_JP_DEFAULT},
+ {13, 2472, LBS_TX_PWR_JP_DEFAULT},
+ {14, 2484, LBS_TX_PWR_JP_DEFAULT}
+};
+
/**
- * @brief Post process the scan table after a new scan command has completed
- *
- * Inspect each entry of the scan table and try to find an entry that
- * matches our current associated/joined network from the scan. If
- * one is found, update the stored copy of the bssdescriptor for our
- * current network.
- *
- * Debug dump the current scan table contents if compiled accordingly.
- *
- * @param priv A pointer to wlan_private structure
+ * the structure for channel, frequency and power
+ */
+struct region_cfp_table {
+ u8 region;
+ struct chan_freq_power *cfp_BG;
+ int cfp_no_BG;
+};
+
+/**
+ * the structure for the mapping between region and CFP
+ */
+static struct region_cfp_table region_cfp_table[] = {
+ {0x10, /*US FCC */
+ channel_freq_power_US_BG,
+ ARRAY_SIZE(channel_freq_power_US_BG),
+ }
+ ,
+ {0x20, /*CANADA IC */
+ channel_freq_power_US_BG,
+ ARRAY_SIZE(channel_freq_power_US_BG),
+ }
+ ,
+ {0x30, /*EU*/ channel_freq_power_EU_BG,
+ ARRAY_SIZE(channel_freq_power_EU_BG),
+ }
+ ,
+ {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
+ ARRAY_SIZE(channel_freq_power_SPN_BG),
+ }
+ ,
+ {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
+ ARRAY_SIZE(channel_freq_power_FR_BG),
+ }
+ ,
+ {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
+ ARRAY_SIZE(channel_freq_power_JPN_BG),
+ }
+ ,
+/*Add new region here */
+};
+
+/**
+ * @brief This function finds the CFP in
+ * region_cfp_table based on region and band parameter.
*
- * @return void
+ * @param region The region code
+ * @param band The band
+ * @param cfp_no A pointer to CFP number
+ * @return A pointer to CFP
*/
-static void wlan_scan_process_results(wlan_private * priv)
+static struct chan_freq_power *lbs_get_region_cfp_table(u8 region, int *cfp_no)
{
- wlan_adapter *adapter = priv->adapter;
- int foundcurrent;
- int i;
+ int i, end;
- foundcurrent = 0;
-
- if (adapter->connect_status == libertas_connected) {
- /* try to find the current BSSID in the new scan list */
- for (i = 0; i < adapter->numinscantable; i++) {
- if (!libertas_SSID_cmp(&adapter->scantable[i].ssid,
- &adapter->curbssparams.ssid) &&
- !memcmp(adapter->curbssparams.bssid,
- adapter->scantable[i].macaddress,
- ETH_ALEN)) {
- foundcurrent = 1;
- }
- }
+ lbs_deb_enter(LBS_DEB_MAIN);
+
+ end = ARRAY_SIZE(region_cfp_table);
- if (foundcurrent) {
- /* Make a copy of current BSSID descriptor */
- memcpy(&adapter->curbssparams.bssdescriptor,
- &adapter->scantable[i],
- sizeof(adapter->curbssparams.bssdescriptor));
+ for (i = 0; i < end ; i++) {
+ lbs_deb_main("region_cfp_table[i].region=%d\n",
+ region_cfp_table[i].region);
+ if (region_cfp_table[i].region == region) {
+ *cfp_no = region_cfp_table[i].cfp_no_BG;
+ lbs_deb_leave(LBS_DEB_MAIN);
+ return region_cfp_table[i].cfp_BG;
}
}
- for (i = 0; i < adapter->numinscantable; i++) {
- lbs_deb_scan("Scan:(%02d) %02x:%02x:%02x:%02x:%02x:%02x, "
- "RSSI[%03d], SSID[%s]\n",
- i,
- adapter->scantable[i].macaddress[0],
- adapter->scantable[i].macaddress[1],
- adapter->scantable[i].macaddress[2],
- adapter->scantable[i].macaddress[3],
- adapter->scantable[i].macaddress[4],
- adapter->scantable[i].macaddress[5],
- (s32) adapter->scantable[i].rssi,
- adapter->scantable[i].ssid.ssid);
+ lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
+ return NULL;
+}
+
+int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
+{
+ int ret = 0;
+ int i = 0;
+
+ struct chan_freq_power *cfp;
+ int cfp_no;
+
+ lbs_deb_enter(LBS_DEB_MAIN);
+
+ memset(priv->region_channel, 0, sizeof(priv->region_channel));
+
+ cfp = lbs_get_region_cfp_table(region, &cfp_no);
+ if (cfp != NULL) {
+ priv->region_channel[i].nrcfp = cfp_no;
+ priv->region_channel[i].CFP = cfp;
+ } else {
+ lbs_deb_main("wrong region code %#x in band B/G\n",
+ region);
+ ret = -1;
+ goto out;
}
+ priv->region_channel[i].valid = 1;
+ priv->region_channel[i].region = region;
+ priv->region_channel[i].band = band;
+ i++;
+out:
+ lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
+ return ret;
}
+
+
+
+/*********************************************************************/
+/* */
+/* Main scanning support */
+/* */
+/*********************************************************************/
+
/**
* @brief Create a channel list for the driver to scan based on region info
*
+ * Only used from lbs_scan_setup_scan_config()
+ *
* Use the driver region/band information to construct a comprehensive list
* of channels to scan. This routine is used for any scan that is not
* provided a specific channel list to scan.
*
- * @param priv A pointer to wlan_private structure
+ * @param priv A pointer to struct lbs_private structure
* @param scanchanlist Output parameter: resulting channel list to scan
- * @param filteredscan Flag indicating whether or not a BSSID or SSID filter
- * is being sent in the command to firmware. Used to
- * increase the number of channels sent in a scan
- * command and to disable the firmware channel scan
- * filter.
*
* @return void
*/
-static void wlan_scan_create_channel_list(wlan_private * priv,
- struct chanscanparamset * scanchanlist,
- u8 filteredscan)
+static int lbs_scan_create_channel_list(struct lbs_private *priv,
+ struct chanscanparamset *scanchanlist)
{
-
- wlan_adapter *adapter = priv->adapter;
struct region_channel *scanregion;
struct chan_freq_power *cfp;
int rgnidx;
int chanidx;
int nextchan;
- u8 scantype;
+ uint8_t scantype;
chanidx = 0;
* be changed to passive on a per channel basis if restricted by
* regulatory requirements (11d or 11h)
*/
- scantype = adapter->scantype;
-
- for (rgnidx = 0; rgnidx < ARRAY_SIZE(adapter->region_channel); rgnidx++) {
- if (priv->adapter->enable11d &&
- adapter->connect_status != libertas_connected) {
- /* Scan all the supported chan for the first scan */
- if (!adapter->universal_channel[rgnidx].valid)
- continue;
- scanregion = &adapter->universal_channel[rgnidx];
-
- /* clear the parsed_region_chan for the first scan */
- memset(&adapter->parsed_region_chan, 0x00,
- sizeof(adapter->parsed_region_chan));
- } else {
- if (!adapter->region_channel[rgnidx].valid)
- continue;
- scanregion = &adapter->region_channel[rgnidx];
- }
+ scantype = CMD_SCAN_TYPE_ACTIVE;
- for (nextchan = 0;
- nextchan < scanregion->nrcfp; nextchan++, chanidx++) {
+ for (rgnidx = 0; rgnidx < ARRAY_SIZE(priv->region_channel); rgnidx++) {
+ if (!priv->region_channel[rgnidx].valid)
+ continue;
+ scanregion = &priv->region_channel[rgnidx];
- cfp = scanregion->CFP + nextchan;
+ for (nextchan = 0; nextchan < scanregion->nrcfp; nextchan++, chanidx++) {
+ struct chanscanparamset *chan = &scanchanlist[chanidx];
- if (priv->adapter->enable11d) {
- scantype =
- libertas_get_scan_type_11d(cfp->channel,
- &adapter->
- parsed_region_chan);
- }
+ cfp = scanregion->CFP + nextchan;
- switch (scanregion->band) {
- case BAND_B:
- case BAND_G:
- default:
- scanchanlist[chanidx].radiotype =
- cmd_scan_radio_type_bg;
- break;
- }
+ if (scanregion->band == BAND_B || scanregion->band == BAND_G)
+ chan->radiotype = CMD_SCAN_RADIO_TYPE_BG;
- if (scantype == cmd_scan_type_passive) {
- scanchanlist[chanidx].maxscantime =
- cpu_to_le16
- (MRVDRV_PASSIVE_SCAN_CHAN_TIME);
- scanchanlist[chanidx].chanscanmode.passivescan =
- 1;
+ if (scantype == CMD_SCAN_TYPE_PASSIVE) {
+ chan->maxscantime = cpu_to_le16(MRVDRV_PASSIVE_SCAN_CHAN_TIME);
+ chan->chanscanmode.passivescan = 1;
} else {
- scanchanlist[chanidx].maxscantime =
- cpu_to_le16
- (MRVDRV_ACTIVE_SCAN_CHAN_TIME);
- scanchanlist[chanidx].chanscanmode.passivescan =
- 0;
+ chan->maxscantime = cpu_to_le16(MRVDRV_ACTIVE_SCAN_CHAN_TIME);
+ chan->chanscanmode.passivescan = 0;
}
- scanchanlist[chanidx].channumber = cfp->channel;
-
- if (filteredscan) {
- scanchanlist[chanidx].chanscanmode.
- disablechanfilt = 1;
- }
+ chan->channumber = cfp->channel;
}
}
+ return chanidx;
}
-/**
- * @brief Construct a wlan_scan_cmd_config structure to use in issue scan cmds
- *
- * Application layer or other functions can invoke wlan_scan_networks
- * with a scan configuration supplied in a wlan_ioctl_user_scan_cfg struct.
- * This structure is used as the basis of one or many wlan_scan_cmd_config
- * commands that are sent to the command processing module and sent to
- * firmware.
- *
- * Create a wlan_scan_cmd_config based on the following user supplied
- * parameters (if present):
- * - SSID filter
- * - BSSID filter
- * - Number of Probes to be sent
- * - channel list
+/*
+ * Add SSID TLV of the form:
*
- * If the SSID or BSSID filter is not present, disable/clear the filter.
- * If the number of probes is not set, use the adapter default setting
- * Qualify the channel
- *
- * @param priv A pointer to wlan_private structure
- * @param puserscanin NULL or pointer to scan configuration parameters
- * @param ppchantlvout Output parameter: Pointer to the start of the
- * channel TLV portion of the output scan config
- * @param pscanchanlist Output parameter: Pointer to the resulting channel
- * list to scan
- * @param pmaxchanperscan Output parameter: Number of channels to scan for
- * each issuance of the firmware scan command
- * @param pfilteredscan Output parameter: Flag indicating whether or not
- * a BSSID or SSID filter is being sent in the
- * command to firmware. Used to increase the number
- * of channels sent in a scan command and to
- * disable the firmware channel scan filter.
- * @param pscancurrentonly Output parameter: Flag indicating whether or not
- * we are only scanning our current active channel
- *
- * @return resulting scan configuration
+ * TLV-ID SSID 00 00
+ * length 06 00
+ * ssid 4d 4e 54 45 53 54
*/
-static struct wlan_scan_cmd_config *
-wlan_scan_setup_scan_config(wlan_private * priv,
- const struct wlan_ioctl_user_scan_cfg * puserscanin,
- struct mrvlietypes_chanlistparamset ** ppchantlvout,
- struct chanscanparamset * pscanchanlist,
- int *pmaxchanperscan,
- u8 * pfilteredscan,
- u8 * pscancurrentonly)
+static int lbs_scan_add_ssid_tlv(struct lbs_private *priv, u8 *tlv)
{
- wlan_adapter *adapter = priv->adapter;
- const u8 zeromac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
- struct mrvlietypes_numprobes *pnumprobestlv;
- struct mrvlietypes_ssidparamset *pssidtlv;
- struct wlan_scan_cmd_config * pscancfgout = NULL;
- u8 *ptlvpos;
- u16 numprobes;
- u16 ssidlen;
- int chanidx;
- int scantype;
- int scandur;
- int channel;
- int radiotype;
-
- pscancfgout = kzalloc(MAX_SCAN_CFG_ALLOC, GFP_KERNEL);
- if (pscancfgout == NULL)
- goto out;
-
- /* The tlvbufferlen is calculated for each scan command. The TLVs added
- * in this routine will be preserved since the routine that sends
- * the command will append channelTLVs at *ppchantlvout. The difference
- * between the *ppchantlvout and the tlvbuffer start will be used
- * to calculate the size of anything we add in this routine.
- */
- pscancfgout->tlvbufferlen = 0;
-
- /* Running tlv pointer. Assigned to ppchantlvout at end of function
- * so later routines know where channels can be added to the command buf
- */
- ptlvpos = pscancfgout->tlvbuffer;
-
- /*
- * Set the initial scan paramters for progressive scanning. If a specific
- * BSSID or SSID is used, the number of channels in the scan command
- * will be increased to the absolute maximum
- */
- *pmaxchanperscan = MRVDRV_CHANNELS_PER_SCAN_CMD;
-
- /* Initialize the scan as un-filtered by firmware, set to TRUE below if
- * a SSID or BSSID filter is sent in the command
- */
- *pfilteredscan = 0;
-
- /* Initialize the scan as not being only on the current channel. If
- * the channel list is customized, only contains one channel, and
- * is the active channel, this is set true and data flow is not halted.
- */
- *pscancurrentonly = 0;
-
- if (puserscanin) {
-
- /* Set the bss type scan filter, use adapter setting if unset */
- pscancfgout->bsstype =
- (puserscanin->bsstype ? puserscanin->bsstype : adapter->
- scanmode);
-
- /* Set the number of probes to send, use adapter setting if unset */
- numprobes = (puserscanin->numprobes ? puserscanin->numprobes :
- adapter->scanprobes);
-
- /*
- * Set the BSSID filter to the incoming configuration,
- * if non-zero. If not set, it will remain disabled (all zeros).
- */
- memcpy(pscancfgout->specificBSSID,
- puserscanin->specificBSSID,
- sizeof(pscancfgout->specificBSSID));
-
- ssidlen = strlen(puserscanin->specificSSID);
-
- if (ssidlen) {
- pssidtlv =
- (struct mrvlietypes_ssidparamset *) pscancfgout->
- tlvbuffer;
- pssidtlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
- pssidtlv->header.len = cpu_to_le16(ssidlen);
- memcpy(pssidtlv->ssid, puserscanin->specificSSID,
- ssidlen);
- ptlvpos += sizeof(pssidtlv->header) + ssidlen;
- }
-
- /*
- * The default number of channels sent in the command is low to
- * ensure the response buffer from the firmware does not truncate
- * scan results. That is not an issue with an SSID or BSSID
- * filter applied to the scan results in the firmware.
- */
- if (ssidlen || (memcmp(pscancfgout->specificBSSID,
- &zeromac, sizeof(zeromac)) != 0)) {
- *pmaxchanperscan = MRVDRV_MAX_CHANNELS_PER_SCAN;
- *pfilteredscan = 1;
- }
- } else {
- pscancfgout->bsstype = adapter->scanmode;
- numprobes = adapter->scanprobes;
- }
-
- /* If the input config or adapter has the number of Probes set, add tlv */
- if (numprobes) {
- pnumprobestlv = (struct mrvlietypes_numprobes *) ptlvpos;
- pnumprobestlv->header.type =
- cpu_to_le16(TLV_TYPE_NUMPROBES);
- pnumprobestlv->header.len = sizeof(pnumprobestlv->numprobes);
- pnumprobestlv->numprobes = cpu_to_le16(numprobes);
-
- ptlvpos +=
- sizeof(pnumprobestlv->header) + pnumprobestlv->header.len;
-
- pnumprobestlv->header.len =
- cpu_to_le16(pnumprobestlv->header.len);
- }
-
- /*
- * Set the output for the channel TLV to the address in the tlv buffer
- * past any TLVs that were added in this fuction (SSID, numprobes).
- * channel TLVs will be added past this for each scan command, preserving
- * the TLVs that were previously added.
- */
- *ppchantlvout = (struct mrvlietypes_chanlistparamset *) ptlvpos;
-
- if (puserscanin && puserscanin->chanlist[0].channumber) {
-
- lbs_deb_scan("Scan: Using supplied channel list\n");
-
- for (chanidx = 0;
- chanidx < WLAN_IOCTL_USER_SCAN_CHAN_MAX
- && puserscanin->chanlist[chanidx].channumber; chanidx++) {
-
- channel = puserscanin->chanlist[chanidx].channumber;
- (pscanchanlist + chanidx)->channumber = channel;
-
- radiotype = puserscanin->chanlist[chanidx].radiotype;
- (pscanchanlist + chanidx)->radiotype = radiotype;
-
- scantype = puserscanin->chanlist[chanidx].scantype;
-
- if (scantype == cmd_scan_type_passive) {
- (pscanchanlist +
- chanidx)->chanscanmode.passivescan = 1;
- } else {
- (pscanchanlist +
- chanidx)->chanscanmode.passivescan = 0;
- }
-
- if (puserscanin->chanlist[chanidx].scantime) {
- scandur =
- puserscanin->chanlist[chanidx].scantime;
- } else {
- if (scantype == cmd_scan_type_passive) {
- scandur = MRVDRV_PASSIVE_SCAN_CHAN_TIME;
- } else {
- scandur = MRVDRV_ACTIVE_SCAN_CHAN_TIME;
- }
- }
-
- (pscanchanlist + chanidx)->minscantime =
- cpu_to_le16(scandur);
- (pscanchanlist + chanidx)->maxscantime =
- cpu_to_le16(scandur);
- }
+ struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
- /* Check if we are only scanning the current channel */
- if ((chanidx == 1) && (puserscanin->chanlist[0].channumber
- ==
- priv->adapter->curbssparams.channel)) {
- *pscancurrentonly = 1;
- lbs_deb_scan("Scan: Scanning current channel only");
- }
+ ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
+ ssid_tlv->header.len = cpu_to_le16(priv->scan_ssid_len);
+ memcpy(ssid_tlv->ssid, priv->scan_ssid, priv->scan_ssid_len);
+ return sizeof(ssid_tlv->header) + priv->scan_ssid_len;
+}
- } else {
- lbs_deb_scan("Scan: Creating full region channel list\n");
- wlan_scan_create_channel_list(priv, pscanchanlist,
- *pfilteredscan);
- }
+/*
+ * Add CHANLIST TLV of the form
+ *
+ * TLV-ID CHANLIST 01 01
+ * length 5b 00
+ * channel 1 00 01 00 00 00 64 00
+ * radio type 00
+ * channel 01
+ * scan type 00
+ * min scan time 00 00
+ * max scan time 64 00
+ * channel 2 00 02 00 00 00 64 00
+ * channel 3 00 03 00 00 00 64 00
+ * channel 4 00 04 00 00 00 64 00
+ * channel 5 00 05 00 00 00 64 00
+ * channel 6 00 06 00 00 00 64 00
+ * channel 7 00 07 00 00 00 64 00
+ * channel 8 00 08 00 00 00 64 00
+ * channel 9 00 09 00 00 00 64 00
+ * channel 10 00 0a 00 00 00 64 00
+ * channel 11 00 0b 00 00 00 64 00
+ * channel 12 00 0c 00 00 00 64 00
+ * channel 13 00 0d 00 00 00 64 00
+ *
+ */
+static int lbs_scan_add_chanlist_tlv(uint8_t *tlv,
+ struct chanscanparamset *chan_list,
+ int chan_count)
+{
+ size_t size = sizeof(struct chanscanparamset) *chan_count;
+ struct mrvl_ie_chanlist_param_set *chan_tlv = (void *)tlv;
-out:
- return pscancfgout;
+ chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
+ memcpy(chan_tlv->chanscanparam, chan_list, size);
+ chan_tlv->header.len = cpu_to_le16(size);
+ return sizeof(chan_tlv->header) + size;
}
-/**
- * @brief Construct and send multiple scan config commands to the firmware
- *
- * Previous routines have created a wlan_scan_cmd_config with any requested
- * TLVs. This function splits the channel TLV into maxchanperscan lists
- * and sends the portion of the channel TLV along with the other TLVs
- * to the wlan_cmd routines for execution in the firmware.
+/*
+ * Add RATES TLV of the form
*
- * @param priv A pointer to wlan_private structure
- * @param maxchanperscan Maximum number channels to be included in each
- * scan command sent to firmware
- * @param filteredscan Flag indicating whether or not a BSSID or SSID
- * filter is being used for the firmware command
- * scan command sent to firmware
- * @param pscancfgout Scan configuration used for this scan.
- * @param pchantlvout Pointer in the pscancfgout where the channel TLV
- * should start. This is past any other TLVs that
- * must be sent down in each firmware command.
- * @param pscanchanlist List of channels to scan in maxchanperscan segments
+ * TLV-ID RATES 01 00
+ * length 0e 00
+ * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c
*
- * @return 0 or error return otherwise
+ * The rates are in lbs_bg_rates[], but for the 802.11b
+ * rates the high bit isn't set.
*/
-static int wlan_scan_channel_list(wlan_private * priv,
- int maxchanperscan,
- u8 filteredscan,
- struct wlan_scan_cmd_config * pscancfgout,
- struct mrvlietypes_chanlistparamset * pchantlvout,
- struct chanscanparamset * pscanchanlist,
- const struct wlan_ioctl_user_scan_cfg * puserscanin,
- int full_scan)
+static int lbs_scan_add_rates_tlv(uint8_t *tlv)
{
- struct chanscanparamset *ptmpchan;
- struct chanscanparamset *pstartchan;
- u8 scanband;
- int doneearly;
- int tlvidx;
- int ret = 0;
- int scanned = 0;
- union iwreq_data wrqu;
-
- lbs_deb_enter(LBS_DEB_ASSOC);
+ int i;
+ struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
- if (pscancfgout == 0 || pchantlvout == 0 || pscanchanlist == 0) {
- lbs_deb_scan("Scan: Null detect: %p, %p, %p\n",
- pscancfgout, pchantlvout, pscanchanlist);
- return -1;
+ rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
+ tlv += sizeof(rate_tlv->header);
+ for (i = 0; i < MAX_RATES; i++) {
+ *tlv = lbs_bg_rates[i];
+ if (*tlv == 0)
+ break;
+ /* This code makes sure that the 802.11b rates (1 MBit/s, 2
+ MBit/s, 5.5 MBit/s and 11 MBit/s get's the high bit set.
+ Note that the values are MBit/s * 2, to mark them as
+ basic rates so that the firmware likes it better */
+ if (*tlv == 0x02 || *tlv == 0x04 ||
+ *tlv == 0x0b || *tlv == 0x16)
+ *tlv |= 0x80;
+ tlv++;
}
+ rate_tlv->header.len = cpu_to_le16(i);
+ return sizeof(rate_tlv->header) + i;
+}
- pchantlvout->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
-
- /* Set the temp channel struct pointer to the start of the desired list */
- ptmpchan = pscanchanlist;
-
- if (priv->adapter->last_scanned_channel && !puserscanin)
- ptmpchan += priv->adapter->last_scanned_channel;
-
- /* Loop through the desired channel list, sending a new firmware scan
- * commands for each maxchanperscan channels (or for 1,6,11 individually
- * if configured accordingly)
- */
- while (ptmpchan->channumber) {
-
- tlvidx = 0;
- pchantlvout->header.len = 0;
- scanband = ptmpchan->radiotype;
- pstartchan = ptmpchan;
- doneearly = 0;
-
- /* Construct the channel TLV for the scan command. Continue to
- * insert channel TLVs until:
- * - the tlvidx hits the maximum configured per scan command
- * - the next channel to insert is 0 (end of desired channel list)
- * - doneearly is set (controlling individual scanning of 1,6,11)
- */
- while (tlvidx < maxchanperscan && ptmpchan->channumber
- && !doneearly && scanned < 2) {
-
- lbs_deb_scan(
- "Scan: Chan(%3d), Radio(%d), mode(%d,%d), Dur(%d)\n",
- ptmpchan->channumber, ptmpchan->radiotype,
- ptmpchan->chanscanmode.passivescan,
- ptmpchan->chanscanmode.disablechanfilt,
- ptmpchan->maxscantime);
-
- /* Copy the current channel TLV to the command being prepared */
- memcpy(pchantlvout->chanscanparam + tlvidx,
- ptmpchan, sizeof(pchantlvout->chanscanparam));
-
- /* Increment the TLV header length by the size appended */
- pchantlvout->header.len +=
- sizeof(pchantlvout->chanscanparam);
-
- /*
- * The tlv buffer length is set to the number of bytes of the
- * between the channel tlv pointer and the start of the
- * tlv buffer. This compensates for any TLVs that were appended
- * before the channel list.
- */
- pscancfgout->tlvbufferlen = ((u8 *) pchantlvout
- - pscancfgout->tlvbuffer);
-
- /* Add the size of the channel tlv header and the data length */
- pscancfgout->tlvbufferlen +=
- (sizeof(pchantlvout->header)
- + pchantlvout->header.len);
-
- /* Increment the index to the channel tlv we are constructing */
- tlvidx++;
-
- doneearly = 0;
-
- /* Stop the loop if the *current* channel is in the 1,6,11 set
- * and we are not filtering on a BSSID or SSID.
- */
- if (!filteredscan && (ptmpchan->channumber == 1
- || ptmpchan->channumber == 6
- || ptmpchan->channumber == 11)) {
- doneearly = 1;
- }
-
- /* Increment the tmp pointer to the next channel to be scanned */
- ptmpchan++;
- scanned++;
-
- /* Stop the loop if the *next* channel is in the 1,6,11 set.
- * This will cause it to be the only channel scanned on the next
- * interation
- */
- if (!filteredscan && (ptmpchan->channumber == 1
- || ptmpchan->channumber == 6
- || ptmpchan->channumber == 11)) {
- doneearly = 1;
- }
- }
+/*
+ * Generate the CMD_802_11_SCAN command with the proper tlv
+ * for a bunch of channels.
+ */
+static int lbs_do_scan(struct lbs_private *priv, uint8_t bsstype,
+ struct chanscanparamset *chan_list, int chan_count)
+{
+ int ret = -ENOMEM;
+ struct cmd_ds_802_11_scan *scan_cmd;
+ uint8_t *tlv; /* pointer into our current, growing TLV storage area */
- /* Send the scan command to the firmware with the specified cfg */
- ret = libertas_prepare_and_send_command(priv, cmd_802_11_scan, 0,
- 0, 0, pscancfgout);
- if (scanned >= 2 && !full_scan) {
- priv->adapter->last_scanned_channel = ptmpchan->channumber;
- ret = 0;
- goto done;
- }
- scanned = 0;
- }
+ lbs_deb_enter_args(LBS_DEB_SCAN, "bsstype %d, chanlist[].chan %d, chan_count %d",
+ bsstype, chan_list ? chan_list[0].channumber : -1,
+ chan_count);
- priv->adapter->last_scanned_channel = ptmpchan->channumber;
+ /* create the fixed part for scan command */
+ scan_cmd = kzalloc(MAX_SCAN_CFG_ALLOC, GFP_KERNEL);
+ if (scan_cmd == NULL)
+ goto out;
- memset(&wrqu, 0, sizeof(union iwreq_data));
- wireless_send_event(priv->wlan_dev.netdev, SIOCGIWSCAN, &wrqu, NULL);
+ tlv = scan_cmd->tlvbuffer;
+ /* TODO: do we need to scan for a specific BSSID?
+ memcpy(scan_cmd->bssid, priv->scan_bssid, ETH_ALEN); */
+ scan_cmd->bsstype = bsstype;
+
+ /* add TLVs */
+ if (priv->scan_ssid_len)
+ tlv += lbs_scan_add_ssid_tlv(priv, tlv);
+ if (chan_list && chan_count)
+ tlv += lbs_scan_add_chanlist_tlv(tlv, chan_list, chan_count);
+ tlv += lbs_scan_add_rates_tlv(tlv);
+
+ /* This is the final data we are about to send */
+ scan_cmd->hdr.size = cpu_to_le16(tlv - (uint8_t *)scan_cmd);
+ lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
+ sizeof(*scan_cmd));
+ lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
+ tlv - scan_cmd->tlvbuffer);
+
+ ret = __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
+ le16_to_cpu(scan_cmd->hdr.size),
+ lbs_ret_80211_scan, 0);
-done:
+out:
+ kfree(scan_cmd);
lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
return ret;
}
* order to send the appropriate scan commands to firmware to populate or
* update the internal driver scan table
*
- * @param priv A pointer to wlan_private structure
- * @param puserscanin Pointer to the input configuration for the requested
- * scan.
+ * @param priv A pointer to struct lbs_private structure
+ * @param full_scan Do a full-scan (blocking)
*
* @return 0 or < 0 if error
*/
-int wlan_scan_networks(wlan_private * priv,
- const struct wlan_ioctl_user_scan_cfg * puserscanin,
- int full_scan)
+int lbs_scan_networks(struct lbs_private *priv, int full_scan)
{
- wlan_adapter *adapter = priv->adapter;
- struct mrvlietypes_chanlistparamset *pchantlvout;
- struct chanscanparamset * scan_chan_list = NULL;
- struct wlan_scan_cmd_config * scan_cfg = NULL;
- u8 keeppreviousscan;
- u8 filteredscan;
- u8 scancurrentchanonly;
- int maxchanperscan;
- int ret;
+ int ret = -ENOMEM;
+ struct chanscanparamset *chan_list;
+ struct chanscanparamset *curr_chans;
+ int chan_count;
+ uint8_t bsstype = CMD_BSS_TYPE_ANY;
+ int numchannels = MRVDRV_CHANNELS_PER_SCAN_CMD;
+ union iwreq_data wrqu;
+#ifdef CONFIG_LIBERTAS_DEBUG
+ struct bss_descriptor *iter;
+ int i = 0;
+ DECLARE_SSID_BUF(ssid);
+#endif
- lbs_deb_enter(LBS_DEB_ASSOC);
+ lbs_deb_enter_args(LBS_DEB_SCAN, "full_scan %d", full_scan);
- scan_chan_list = kzalloc(sizeof(struct chanscanparamset) *
- WLAN_IOCTL_USER_SCAN_CHAN_MAX, GFP_KERNEL);
- if (scan_chan_list == NULL) {
- ret = -ENOMEM;
- goto out;
- }
-
- scan_cfg = wlan_scan_setup_scan_config(priv,
- puserscanin,
- &pchantlvout,
- scan_chan_list,
- &maxchanperscan,
- &filteredscan,
- &scancurrentchanonly);
- if (scan_cfg == NULL) {
- ret = -ENOMEM;
+ /* Cancel any partial outstanding partial scans if this scan
+ * is a full scan.
+ */
+ if (full_scan && delayed_work_pending(&priv->scan_work))
+ cancel_delayed_work(&priv->scan_work);
+
+ /* User-specified bsstype or channel list
+ TODO: this can be implemented if some user-space application
+ need the feature. Formerly, it was accessible from debugfs,
+ but then nowhere used.
+ if (user_cfg) {
+ if (user_cfg->bsstype)
+ bsstype = user_cfg->bsstype;
+ } */
+
+ lbs_deb_scan("numchannels %d, bsstype %d\n", numchannels, bsstype);
+
+ /* Create list of channels to scan */
+ chan_list = kzalloc(sizeof(struct chanscanparamset) *
+ LBS_IOCTL_USER_SCAN_CHAN_MAX, GFP_KERNEL);
+ if (!chan_list) {
+ lbs_pr_alert("SCAN: chan_list empty\n");
goto out;
}
- keeppreviousscan = 0;
+ /* We want to scan all channels */
+ chan_count = lbs_scan_create_channel_list(priv, chan_list);
- if (puserscanin) {
- keeppreviousscan = puserscanin->keeppreviousscan;
+ netif_stop_queue(priv->dev);
+ netif_carrier_off(priv->dev);
+ if (priv->mesh_dev) {
+ netif_stop_queue(priv->mesh_dev);
+ netif_carrier_off(priv->mesh_dev);
}
- if (adapter->last_scanned_channel)
- keeppreviousscan = 1;
-
- if (!keeppreviousscan) {
- memset(adapter->scantable, 0x00,
- sizeof(struct bss_descriptor) * MRVDRV_MAX_BSSID_LIST);
- adapter->numinscantable = 0;
- }
-
- /* Keep the data path active if we are only scanning our current channel */
- if (!scancurrentchanonly) {
- netif_stop_queue(priv->wlan_dev.netdev);
- netif_carrier_off(priv->wlan_dev.netdev);
+ /* Prepare to continue an interrupted scan */
+ lbs_deb_scan("chan_count %d, scan_channel %d\n",
+ chan_count, priv->scan_channel);
+ curr_chans = chan_list;
+ /* advance channel list by already-scanned-channels */
+ if (priv->scan_channel > 0) {
+ curr_chans += priv->scan_channel;
+ chan_count -= priv->scan_channel;
}
- ret = wlan_scan_channel_list(priv,
- maxchanperscan,
- filteredscan,
- scan_cfg,
- pchantlvout,
- scan_chan_list,
- puserscanin,
- full_scan);
-
- /* Process the resulting scan table:
- * - Remove any bad ssids
- * - Update our current BSS information from scan data
+ /* Send scan command(s)
+ * numchannels contains the number of channels we should maximally scan
+ * chan_count is the total number of channels to scan
*/
- wlan_scan_process_results(priv);
- if (priv->adapter->connect_status == libertas_connected) {
- netif_carrier_on(priv->wlan_dev.netdev);
- netif_wake_queue(priv->wlan_dev.netdev);
+ while (chan_count) {
+ int to_scan = min(numchannels, chan_count);
+ lbs_deb_scan("scanning %d of %d channels\n",
+ to_scan, chan_count);
+ ret = lbs_do_scan(priv, bsstype, curr_chans,
+ to_scan);
+ if (ret) {
+ lbs_pr_err("SCAN_CMD failed\n");
+ goto out2;
+ }
+ curr_chans += to_scan;
+ chan_count -= to_scan;
+
+ /* somehow schedule the next part of the scan */
+ if (chan_count && !full_scan &&
+ !priv->surpriseremoved) {
+ /* -1 marks just that we're currently scanning */
+ if (priv->scan_channel < 0)
+ priv->scan_channel = to_scan;
+ else
+ priv->scan_channel += to_scan;
+ cancel_delayed_work(&priv->scan_work);
+ queue_delayed_work(priv->work_thread, &priv->scan_work,
+ msecs_to_jiffies(300));
+ /* skip over GIWSCAN event */
+ goto out;
+ }
+
}
+ memset(&wrqu, 0, sizeof(union iwreq_data));
+ wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
+
+#ifdef CONFIG_LIBERTAS_DEBUG
+ /* Dump the scan table */
+ mutex_lock(&priv->lock);
+ lbs_deb_scan("scan table:\n");
+ list_for_each_entry(iter, &priv->network_list, list)
+ lbs_deb_scan("%02d: BSSID %pM, RSSI %d, SSID '%s'\n",
+ i++, iter->bssid, iter->rssi,
+ print_ssid(ssid, iter->ssid, iter->ssid_len));
+ mutex_unlock(&priv->lock);
+#endif
-out:
- if (scan_cfg)
- kfree(scan_cfg);
+out2:
+ priv->scan_channel = 0;
- if (scan_chan_list)
- kfree(scan_chan_list);
+out:
+ if (priv->connect_status == LBS_CONNECTED) {
+ netif_carrier_on(priv->dev);
+ if (!priv->tx_pending_len)
+ netif_wake_queue(priv->dev);
+ }
+ if (priv->mesh_dev && (priv->mesh_connect_status == LBS_CONNECTED)) {
+ netif_carrier_on(priv->mesh_dev);
+ if (!priv->tx_pending_len)
+ netif_wake_queue(priv->mesh_dev);
+ }
+ kfree(chan_list);
lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
return ret;
}
-/**
- * @brief Inspect the scan response buffer for pointers to expected TLVs
- *
- * TLVs can be included at the end of the scan response BSS information.
- * Parse the data in the buffer for pointers to TLVs that can potentially
- * be passed back in the response
- *
- * @param ptlv Pointer to the start of the TLV buffer to parse
- * @param tlvbufsize size of the TLV buffer
- * @param ptsftlv Output parameter: Pointer to the TSF TLV if found
- *
- * @return void
- */
-static
-void wlan_ret_802_11_scan_get_tlv_ptrs(struct mrvlietypes_data * ptlv,
- int tlvbufsize,
- struct mrvlietypes_tsftimestamp ** ptsftlv)
+void lbs_scan_worker(struct work_struct *work)
{
- struct mrvlietypes_data *pcurrenttlv;
- int tlvbufleft;
- u16 tlvtype;
- u16 tlvlen;
-
- pcurrenttlv = ptlv;
- tlvbufleft = tlvbufsize;
- *ptsftlv = NULL;
+ struct lbs_private *priv =
+ container_of(work, struct lbs_private, scan_work.work);
- lbs_deb_scan("SCAN_RESP: tlvbufsize = %d\n", tlvbufsize);
- lbs_dbg_hex("SCAN_RESP: TLV Buf", (u8 *) ptlv, tlvbufsize);
-
- while (tlvbufleft >= sizeof(struct mrvlietypesheader)) {
- tlvtype = le16_to_cpu(pcurrenttlv->header.type);
- tlvlen = le16_to_cpu(pcurrenttlv->header.len);
+ lbs_deb_enter(LBS_DEB_SCAN);
+ lbs_scan_networks(priv, 0);
+ lbs_deb_leave(LBS_DEB_SCAN);
+}
- switch (tlvtype) {
- case TLV_TYPE_TSFTIMESTAMP:
- *ptsftlv = (struct mrvlietypes_tsftimestamp *) pcurrenttlv;
- break;
- default:
- lbs_deb_scan("SCAN_RESP: Unhandled TLV = %d\n",
- tlvtype);
- /* Give up, this seems corrupted */
- return;
- } /* switch */
-
- tlvbufleft -= (sizeof(ptlv->header) + tlvlen);
- pcurrenttlv =
- (struct mrvlietypes_data *) (pcurrenttlv->Data + tlvlen);
- } /* while */
-}
+/*********************************************************************/
+/* */
+/* Result interpretation */
+/* */
+/*********************************************************************/
/**
* @brief Interpret a BSS scan response returned from the firmware
*
* Parse the various fixed fields and IEs passed back for a a BSS probe
- * response or beacon from the scan command. Record information as needed
- * in the scan table struct bss_descriptor for that entry.
+ * response or beacon from the scan command. Record information as needed
+ * in the scan table struct bss_descriptor for that entry.
*
- * @param pBSSIDEntry Output parameter: Pointer to the BSS Entry
+ * @param bss Output parameter: Pointer to the BSS Entry
*
* @return 0 or -1
*/
-static int InterpretBSSDescriptionWithIE(struct bss_descriptor * pBSSEntry,
- u8 ** pbeaconinfo, int *bytesleft)
+static int lbs_process_bss(struct bss_descriptor *bss,
+ uint8_t **pbeaconinfo, int *bytesleft)
{
- enum ieeetypes_elementid elemID;
- struct ieeetypes_fhparamset *pFH;
- struct ieeetypes_dsparamset *pDS;
- struct ieeetypes_cfparamset *pCF;
- struct ieeetypes_ibssparamset *pibss;
- struct ieeetypes_capinfo *pcap;
- struct WLAN_802_11_FIXED_IEs fixedie;
- u8 *pcurrentptr;
- u8 *pRate;
- u8 elemlen;
- u8 bytestocopy;
- u8 ratesize;
- u16 beaconsize;
- u8 founddatarateie;
- int bytesleftforcurrentbeacon;
+ struct ieee_ie_fh_param_set *fh;
+ struct ieee_ie_ds_param_set *ds;
+ struct ieee_ie_cf_param_set *cf;
+ struct ieee_ie_ibss_param_set *ibss;
+ DECLARE_SSID_BUF(ssid);
+ uint8_t *pos, *end, *p;
+ uint8_t n_ex_rates = 0, got_basic_rates = 0, n_basic_rates = 0;
+ uint16_t beaconsize = 0;
int ret;
- struct IE_WPA *pIe;
- const u8 oui01[4] = { 0x00, 0x50, 0xf2, 0x01 };
-
- struct ieeetypes_countryinfoset *pcountryinfo;
-
- lbs_deb_enter(LBS_DEB_ASSOC);
-
- founddatarateie = 0;
- ratesize = 0;
- beaconsize = 0;
+ lbs_deb_enter(LBS_DEB_SCAN);
if (*bytesleft >= sizeof(beaconsize)) {
/* Extract & convert beacon size from the command buffer */
- memcpy(&beaconsize, *pbeaconinfo, sizeof(beaconsize));
- beaconsize = le16_to_cpu(beaconsize);
+ beaconsize = get_unaligned_le16(*pbeaconinfo);
*bytesleft -= sizeof(beaconsize);
*pbeaconinfo += sizeof(beaconsize);
}
if (beaconsize == 0 || beaconsize > *bytesleft) {
-
*pbeaconinfo += *bytesleft;
*bytesleft = 0;
-
- return -1;
+ ret = -1;
+ goto done;
}
/* Initialize the current working beacon pointer for this BSS iteration */
- pcurrentptr = *pbeaconinfo;
+ pos = *pbeaconinfo;
+ end = pos + beaconsize;
/* Advance the return beacon pointer past the current beacon */
*pbeaconinfo += beaconsize;
*bytesleft -= beaconsize;
- bytesleftforcurrentbeacon = beaconsize;
-
- memcpy(pBSSEntry->macaddress, pcurrentptr, ETH_ALEN);
- lbs_deb_scan("InterpretIE: AP MAC Addr-%x:%x:%x:%x:%x:%x\n",
- pBSSEntry->macaddress[0], pBSSEntry->macaddress[1],
- pBSSEntry->macaddress[2], pBSSEntry->macaddress[3],
- pBSSEntry->macaddress[4], pBSSEntry->macaddress[5]);
+ memcpy(bss->bssid, pos, ETH_ALEN);
+ lbs_deb_scan("process_bss: BSSID %pM\n", bss->bssid);
+ pos += ETH_ALEN;
- pcurrentptr += ETH_ALEN;
- bytesleftforcurrentbeacon -= ETH_ALEN;
-
- if (bytesleftforcurrentbeacon < 12) {
- lbs_deb_scan("InterpretIE: Not enough bytes left\n");
- return -1;
+ if ((end - pos) < 12) {
+ lbs_deb_scan("process_bss: Not enough bytes left\n");
+ ret = -1;
+ goto done;
}
/*
*/
/* RSSI is 1 byte long */
- pBSSEntry->rssi = le32_to_cpu((long)(*pcurrentptr));
- lbs_deb_scan("InterpretIE: RSSI=%02X\n", *pcurrentptr);
- pcurrentptr += 1;
- bytesleftforcurrentbeacon -= 1;
+ bss->rssi = *pos;
+ lbs_deb_scan("process_bss: RSSI %d\n", *pos);
+ pos++;
/* time stamp is 8 bytes long */
- memcpy(fixedie.timestamp, pcurrentptr, 8);
- memcpy(pBSSEntry->timestamp, pcurrentptr, 8);
- pcurrentptr += 8;
- bytesleftforcurrentbeacon -= 8;
+ pos += 8;
/* beacon interval is 2 bytes long */
- memcpy(&fixedie.beaconinterval, pcurrentptr, 2);
- pBSSEntry->beaconperiod = le16_to_cpu(fixedie.beaconinterval);
- pcurrentptr += 2;
- bytesleftforcurrentbeacon -= 2;
+ bss->beaconperiod = get_unaligned_le16(pos);
+ pos += 2;
/* capability information is 2 bytes long */
- memcpy(&fixedie.capabilities, pcurrentptr, 2);
- lbs_deb_scan("InterpretIE: fixedie.capabilities=0x%X\n",
- fixedie.capabilities);
- fixedie.capabilities = le16_to_cpu(fixedie.capabilities);
- pcap = (struct ieeetypes_capinfo *) & fixedie.capabilities;
- memcpy(&pBSSEntry->cap, pcap, sizeof(struct ieeetypes_capinfo));
- pcurrentptr += 2;
- bytesleftforcurrentbeacon -= 2;
-
- /* rest of the current buffer are IE's */
- lbs_deb_scan("InterpretIE: IElength for this AP = %d\n",
- bytesleftforcurrentbeacon);
-
- lbs_dbg_hex("InterpretIE: IE info", (u8 *) pcurrentptr,
- bytesleftforcurrentbeacon);
+ bss->capability = get_unaligned_le16(pos);
+ lbs_deb_scan("process_bss: capabilities 0x%04x\n", bss->capability);
+ pos += 2;
- if (pcap->privacy) {
- lbs_deb_scan("InterpretIE: AP WEP enabled\n");
- pBSSEntry->privacy = wlan802_11privfilter8021xWEP;
- } else {
- pBSSEntry->privacy = wlan802_11privfilteracceptall;
- }
+ if (bss->capability & WLAN_CAPABILITY_PRIVACY)
+ lbs_deb_scan("process_bss: WEP enabled\n");
+ if (bss->capability & WLAN_CAPABILITY_IBSS)
+ bss->mode = IW_MODE_ADHOC;
+ else
+ bss->mode = IW_MODE_INFRA;
- if (pcap->ibss == 1) {
- pBSSEntry->mode = IW_MODE_ADHOC;
- } else {
- pBSSEntry->mode = IW_MODE_INFRA;
- }
+ /* rest of the current buffer are IE's */
+ lbs_deb_scan("process_bss: IE len %zd\n", end - pos);
+ lbs_deb_hex(LBS_DEB_SCAN, "process_bss: IE info", pos, end - pos);
/* process variable IE */
- while (bytesleftforcurrentbeacon >= 2) {
- elemID = (enum ieeetypes_elementid) (*((u8 *) pcurrentptr));
- elemlen = *((u8 *) pcurrentptr + 1);
-
- if (bytesleftforcurrentbeacon < elemlen) {
- lbs_deb_scan("InterpretIE: error in processing IE, "
- "bytes left < IE length\n");
- bytesleftforcurrentbeacon = 0;
- continue;
- }
-
- switch (elemID) {
-
- case SSID:
- pBSSEntry->ssid.ssidlength = elemlen;
- memcpy(pBSSEntry->ssid.ssid, (pcurrentptr + 2),
- elemlen);
- lbs_deb_scan("ssid '%s'\n", pBSSEntry->ssid.ssid);
+ while (pos <= end - 2) {
+ if (pos + pos[1] > end) {
+ lbs_deb_scan("process_bss: error in processing IE, "
+ "bytes left < IE length\n");
break;
+ }
- case SUPPORTED_RATES:
- memcpy(pBSSEntry->datarates, (pcurrentptr + 2),
- elemlen);
- memmove(pBSSEntry->libertas_supported_rates, (pcurrentptr + 2),
- elemlen);
- ratesize = elemlen;
- founddatarateie = 1;
+ switch (pos[0]) {
+ case WLAN_EID_SSID:
+ bss->ssid_len = min_t(int, IEEE80211_MAX_SSID_LEN, pos[1]);
+ memcpy(bss->ssid, pos + 2, bss->ssid_len);
+ lbs_deb_scan("got SSID IE: '%s', len %u\n",
+ print_ssid(ssid, bss->ssid, bss->ssid_len),
+ bss->ssid_len);
break;
- case EXTRA_IE:
- lbs_deb_scan("InterpretIE: EXTRA_IE Found!\n");
- pBSSEntry->extra_ie = 1;
+ case WLAN_EID_SUPP_RATES:
+ n_basic_rates = min_t(uint8_t, MAX_RATES, pos[1]);
+ memcpy(bss->rates, pos + 2, n_basic_rates);
+ got_basic_rates = 1;
+ lbs_deb_scan("got RATES IE\n");
break;
- case FH_PARAM_SET:
- pFH = (struct ieeetypes_fhparamset *) pcurrentptr;
- memmove(&pBSSEntry->phyparamset.fhparamset, pFH,
- sizeof(struct ieeetypes_fhparamset));
- pBSSEntry->phyparamset.fhparamset.dwelltime
- =
- le16_to_cpu(pBSSEntry->phyparamset.fhparamset.
- dwelltime);
+ case WLAN_EID_FH_PARAMS:
+ fh = (struct ieee_ie_fh_param_set *) pos;
+ memcpy(&bss->phy.fh, fh, sizeof(*fh));
+ lbs_deb_scan("got FH IE\n");
break;
- case DS_PARAM_SET:
- pDS = (struct ieeetypes_dsparamset *) pcurrentptr;
-
- pBSSEntry->channel = pDS->currentchan;
-
- memcpy(&pBSSEntry->phyparamset.dsparamset, pDS,
- sizeof(struct ieeetypes_dsparamset));
+ case WLAN_EID_DS_PARAMS:
+ ds = (struct ieee_ie_ds_param_set *) pos;
+ bss->channel = ds->channel;
+ memcpy(&bss->phy.ds, ds, sizeof(*ds));
+ lbs_deb_scan("got DS IE, channel %d\n", bss->channel);
break;
- case CF_PARAM_SET:
- pCF = (struct ieeetypes_cfparamset *) pcurrentptr;
-
- memcpy(&pBSSEntry->ssparamset.cfparamset, pCF,
- sizeof(struct ieeetypes_cfparamset));
+ case WLAN_EID_CF_PARAMS:
+ cf = (struct ieee_ie_cf_param_set *) pos;
+ memcpy(&bss->ss.cf, cf, sizeof(*cf));
+ lbs_deb_scan("got CF IE\n");
break;
- case IBSS_PARAM_SET:
- pibss = (struct ieeetypes_ibssparamset *) pcurrentptr;
- pBSSEntry->atimwindow =
- le32_to_cpu(pibss->atimwindow);
-
- memmove(&pBSSEntry->ssparamset.ibssparamset, pibss,
- sizeof(struct ieeetypes_ibssparamset));
-
- pBSSEntry->ssparamset.ibssparamset.atimwindow
- =
- le16_to_cpu(pBSSEntry->ssparamset.ibssparamset.
- atimwindow);
- break;
-
- /* Handle Country Info IE */
- case COUNTRY_INFO:
- pcountryinfo =
- (struct ieeetypes_countryinfoset *) pcurrentptr;
-
- if (pcountryinfo->len <
- sizeof(pcountryinfo->countrycode)
- || pcountryinfo->len > 254) {
- lbs_deb_scan("InterpretIE: 11D- Err "
- "CountryInfo len =%d min=%zd max=254\n",
- pcountryinfo->len,
- sizeof(pcountryinfo->countrycode));
- ret = -1;
- goto done;
- }
-
- memcpy(&pBSSEntry->countryinfo,
- pcountryinfo, pcountryinfo->len + 2);
- lbs_dbg_hex("InterpretIE: 11D- CountryInfo:",
- (u8 *) pcountryinfo,
- (u32) (pcountryinfo->len + 2));
+ case WLAN_EID_IBSS_PARAMS:
+ ibss = (struct ieee_ie_ibss_param_set *) pos;
+ bss->atimwindow = ibss->atimwindow;
+ memcpy(&bss->ss.ibss, ibss, sizeof(*ibss));
+ lbs_deb_scan("got IBSS IE\n");
break;
- case EXTENDED_SUPPORTED_RATES:
- /*
- * only process extended supported rate
- * if data rate is already found.
- * data rate IE should come before
+ case WLAN_EID_EXT_SUPP_RATES:
+ /* only process extended supported rate if data rate is
+ * already found. Data rate IE should come before
* extended supported rate IE
*/
- if (founddatarateie) {
- if ((elemlen + ratesize) > WLAN_SUPPORTED_RATES) {
- bytestocopy =
- (WLAN_SUPPORTED_RATES - ratesize);
- } else {
- bytestocopy = elemlen;
- }
-
- pRate = (u8 *) pBSSEntry->datarates;
- pRate += ratesize;
- memmove(pRate, (pcurrentptr + 2), bytestocopy);
-
- pRate = (u8 *) pBSSEntry->libertas_supported_rates;
-
- pRate += ratesize;
- memmove(pRate, (pcurrentptr + 2), bytestocopy);
+ lbs_deb_scan("got RATESEX IE\n");
+ if (!got_basic_rates) {
+ lbs_deb_scan("... but ignoring it\n");
+ break;
}
- break;
-
- case VENDOR_SPECIFIC_221:
-#define IE_ID_LEN_FIELDS_BYTES 2
- pIe = (struct IE_WPA *)pcurrentptr;
- if (memcmp(pIe->oui, oui01, sizeof(oui01)))
- break;
+ n_ex_rates = pos[1];
+ if (n_basic_rates + n_ex_rates > MAX_RATES)
+ n_ex_rates = MAX_RATES - n_basic_rates;
- pBSSEntry->wpa_ie_len = min_t(size_t,
- elemlen + IE_ID_LEN_FIELDS_BYTES,
- sizeof(pBSSEntry->wpa_ie));
- memcpy(pBSSEntry->wpa_ie, pcurrentptr,
- pBSSEntry->wpa_ie_len);
- lbs_dbg_hex("InterpretIE: Resp WPA_IE",
- pBSSEntry->wpa_ie, elemlen);
+ p = bss->rates + n_basic_rates;
+ memcpy(p, pos + 2, n_ex_rates);
break;
- case WPA2_IE:
- pIe = (struct IE_WPA *)pcurrentptr;
-
- pBSSEntry->rsn_ie_len = min_t(size_t,
- elemlen + IE_ID_LEN_FIELDS_BYTES,
- sizeof(pBSSEntry->rsn_ie));
- memcpy(pBSSEntry->rsn_ie, pcurrentptr,
- pBSSEntry->rsn_ie_len);
- lbs_dbg_hex("InterpretIE: Resp WPA2_IE",
- pBSSEntry->rsn_ie, elemlen);
+
+ case WLAN_EID_GENERIC:
+ if (pos[1] >= 4 &&
+ pos[2] == 0x00 && pos[3] == 0x50 &&
+ pos[4] == 0xf2 && pos[5] == 0x01) {
+ bss->wpa_ie_len = min(pos[1] + 2, MAX_WPA_IE_LEN);
+ memcpy(bss->wpa_ie, pos, bss->wpa_ie_len);
+ lbs_deb_scan("got WPA IE\n");
+ lbs_deb_hex(LBS_DEB_SCAN, "WPA IE", bss->wpa_ie,
+ bss->wpa_ie_len);
+ } else if (pos[1] >= MARVELL_MESH_IE_LENGTH &&
+ pos[2] == 0x00 && pos[3] == 0x50 &&
+ pos[4] == 0x43 && pos[5] == 0x04) {
+ lbs_deb_scan("got mesh IE\n");
+ bss->mesh = 1;
+ } else {
+ lbs_deb_scan("got generic IE: %02x:%02x:%02x:%02x, len %d\n",
+ pos[2], pos[3],
+ pos[4], pos[5],
+ pos[1]);
+ }
break;
- case TIM:
+
+ case WLAN_EID_RSN:
+ lbs_deb_scan("got RSN IE\n");
+ bss->rsn_ie_len = min(pos[1] + 2, MAX_WPA_IE_LEN);
+ memcpy(bss->rsn_ie, pos, bss->rsn_ie_len);
+ lbs_deb_hex(LBS_DEB_SCAN, "process_bss: RSN_IE",
+ bss->rsn_ie, bss->rsn_ie_len);
break;
- case CHALLENGE_TEXT:
+ default:
+ lbs_deb_scan("got IE 0x%04x, len %d\n",
+ pos[0], pos[1]);
break;
}
- pcurrentptr += elemlen + 2;
+ pos += pos[1] + 2;
+ }
- /* need to account for IE ID and IE len */
- bytesleftforcurrentbeacon -= (elemlen + 2);
+ /* Timestamp */
+ bss->last_scanned = jiffies;
+ lbs_unset_basic_rate_flags(bss->rates, sizeof(bss->rates));
- } /* while (bytesleftforcurrentbeacon > 2) */
ret = 0;
done:
}
/**
- * @brief Compare two SSIDs
- *
- * @param ssid1 A pointer to ssid to compare
- * @param ssid2 A pointer to ssid to compare
+ * @brief Send a scan command for all available channels filtered on a spec
*
- * @return 0--ssid is same, otherwise is different
- */
-int libertas_SSID_cmp(struct WLAN_802_11_SSID *ssid1, struct WLAN_802_11_SSID *ssid2)
-{
- if (!ssid1 || !ssid2)
- return -1;
-
- if (ssid1->ssidlength != ssid2->ssidlength)
- return -1;
-
- return memcmp(ssid1->ssid, ssid2->ssid, ssid1->ssidlength);
-}
-
-/**
- * @brief This function finds a specific compatible BSSID in the scan list
+ * Used in association code and from debugfs
*
- * @param adapter A pointer to wlan_adapter
- * @param bssid BSSID to find in the scan list
- * @param mode Network mode: Infrastructure or IBSS
+ * @param priv A pointer to struct lbs_private structure
+ * @param ssid A pointer to the SSID to scan for
+ * @param ssid_len Length of the SSID
*
- * @return index in BSSID list, or error return code (< 0)
+ * @return 0-success, otherwise fail
*/
-int libertas_find_BSSID_in_list(wlan_adapter * adapter, u8 * bssid, u8 mode)
+int lbs_send_specific_ssid_scan(struct lbs_private *priv, uint8_t *ssid,
+ uint8_t ssid_len)
{
- int ret = -ENETUNREACH;
- int i;
+ DECLARE_SSID_BUF(ssid_buf);
+ int ret = 0;
- if (!bssid)
- return -EFAULT;
+ lbs_deb_enter_args(LBS_DEB_SCAN, "SSID '%s'\n",
+ print_ssid(ssid_buf, ssid, ssid_len));
- lbs_deb_scan("FindBSSID: Num of BSSIDs = %d\n",
- adapter->numinscantable);
+ if (!ssid_len)
+ goto out;
- /* Look through the scan table for a compatible match. The ret return
- * variable will be equal to the index in the scan table (greater
- * than zero) if the network is compatible. The loop will continue
- * past a matched bssid that is not compatible in case there is an
- * AP with multiple SSIDs assigned to the same BSSID
- */
- for (i = 0; ret < 0 && i < adapter->numinscantable; i++) {
- if (!memcmp(adapter->scantable[i].macaddress, bssid, ETH_ALEN)) {
- switch (mode) {
- case IW_MODE_INFRA:
- case IW_MODE_ADHOC:
- ret = is_network_compatible(adapter, i, mode);
- break;
- default:
- ret = i;
- break;
- }
- }
+ memcpy(priv->scan_ssid, ssid, ssid_len);
+ priv->scan_ssid_len = ssid_len;
+
+ lbs_scan_networks(priv, 1);
+ if (priv->surpriseremoved) {
+ ret = -1;
+ goto out;
}
+out:
+ lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
return ret;
}
-/**
- * @brief This function finds ssid in ssid list.
- *
- * @param adapter A pointer to wlan_adapter
- * @param ssid SSID to find in the list
- * @param bssid BSSID to qualify the SSID selection (if provided)
- * @param mode Network mode: Infrastructure or IBSS
- *
- * @return index in BSSID list
- */
-int libertas_find_SSID_in_list(wlan_adapter * adapter,
- struct WLAN_802_11_SSID *ssid, u8 * bssid, u8 mode)
-{
- int net = -ENETUNREACH;
- u8 bestrssi = 0;
- int i;
- int j;
- lbs_deb_scan("Num of Entries in Table = %d\n", adapter->numinscantable);
-
- for (i = 0; i < adapter->numinscantable; i++) {
- if (!libertas_SSID_cmp(&adapter->scantable[i].ssid, ssid) &&
- (!bssid ||
- !memcmp(adapter->scantable[i].
- macaddress, bssid, ETH_ALEN))) {
- switch (mode) {
- case IW_MODE_INFRA:
- case IW_MODE_ADHOC:
- j = is_network_compatible(adapter, i, mode);
-
- if (j >= 0) {
- if (bssid) {
- return i;
- }
-
- if (SCAN_RSSI
- (adapter->scantable[i].rssi)
- > bestrssi) {
- bestrssi =
- SCAN_RSSI(adapter->
- scantable[i].
- rssi);
- net = i;
- }
- } else {
- if (net == -ENETUNREACH) {
- net = j;
- }
- }
- break;
- case IW_MODE_AUTO:
- default:
- if (SCAN_RSSI(adapter->scantable[i].rssi)
- > bestrssi) {
- bestrssi =
- SCAN_RSSI(adapter->scantable[i].
- rssi);
- net = i;
- }
- break;
- }
- }
- }
- return net;
-}
-/**
- * @brief This function finds the best SSID in the Scan List
- *
- * Search the scan table for the best SSID that also matches the current
- * adapter network preference (infrastructure or adhoc)
- *
- * @param adapter A pointer to wlan_adapter
- *
- * @return index in BSSID list
- */
-int libertas_find_best_SSID_in_list(wlan_adapter * adapter, u8 mode)
+/*********************************************************************/
+/* */
+/* Support for Wireless Extensions */
+/* */
+/*********************************************************************/
+
+
+#define MAX_CUSTOM_LEN 64
+
+static inline char *lbs_translate_scan(struct lbs_private *priv,
+ struct iw_request_info *info,
+ char *start, char *stop,
+ struct bss_descriptor *bss)
{
- int bestnet = -ENETUNREACH;
- u8 bestrssi = 0;
- int i;
+ struct chan_freq_power *cfp;
+ char *current_val; /* For rates */
+ struct iw_event iwe; /* Temporary buffer */
+ int j;
+#define PERFECT_RSSI ((uint8_t)50)
+#define WORST_RSSI ((uint8_t)0)
+#define RSSI_DIFF ((uint8_t)(PERFECT_RSSI - WORST_RSSI))
+ uint8_t rssi;
- lbs_deb_enter(LBS_DEB_ASSOC);
-
- lbs_deb_scan("Num of BSSIDs = %d\n", adapter->numinscantable);
-
- for (i = 0; i < adapter->numinscantable; i++) {
- switch (mode) {
- case IW_MODE_INFRA:
- case IW_MODE_ADHOC:
- if (is_network_compatible(adapter, i, mode) >= 0) {
- if (SCAN_RSSI(adapter->scantable[i].rssi) >
- bestrssi) {
- bestrssi =
- SCAN_RSSI(adapter->scantable[i].
- rssi);
- bestnet = i;
- }
- }
- break;
- case IW_MODE_AUTO:
- default:
- if (SCAN_RSSI(adapter->scantable[i].rssi) > bestrssi) {
- bestrssi =
- SCAN_RSSI(adapter->scantable[i].rssi);
- bestnet = i;
- }
- break;
- }
+ lbs_deb_enter(LBS_DEB_SCAN);
+
+ cfp = lbs_find_cfp_by_band_and_channel(priv, 0, bss->channel);
+ if (!cfp) {
+ lbs_deb_scan("Invalid channel number %d\n", bss->channel);
+ start = NULL;
+ goto out;
}
- lbs_deb_leave_args(LBS_DEB_SCAN, "bestnet %d", bestnet);
- return bestnet;
-}
+ /* First entry *MUST* be the BSSID */
+ iwe.cmd = SIOCGIWAP;
+ iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
+ memcpy(iwe.u.ap_addr.sa_data, &bss->bssid, ETH_ALEN);
+ start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_ADDR_LEN);
+
+ /* SSID */
+ iwe.cmd = SIOCGIWESSID;
+ iwe.u.data.flags = 1;
+ iwe.u.data.length = min((uint32_t) bss->ssid_len, (uint32_t) IEEE80211_MAX_SSID_LEN);
+ start = iwe_stream_add_point(info, start, stop, &iwe, bss->ssid);
+
+ /* Mode */
+ iwe.cmd = SIOCGIWMODE;
+ iwe.u.mode = bss->mode;
+ start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_UINT_LEN);
+
+ /* Frequency */
+ iwe.cmd = SIOCGIWFREQ;
+ iwe.u.freq.m = (long)cfp->freq * 100000;
+ iwe.u.freq.e = 1;
+ start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_FREQ_LEN);
+
+ /* Add quality statistics */
+ iwe.cmd = IWEVQUAL;
+ iwe.u.qual.updated = IW_QUAL_ALL_UPDATED;
+ iwe.u.qual.level = SCAN_RSSI(bss->rssi);
+
+ rssi = iwe.u.qual.level - MRVDRV_NF_DEFAULT_SCAN_VALUE;
+ iwe.u.qual.qual =
+ (100 * RSSI_DIFF * RSSI_DIFF - (PERFECT_RSSI - rssi) *
+ (15 * (RSSI_DIFF) + 62 * (PERFECT_RSSI - rssi))) /
+ (RSSI_DIFF * RSSI_DIFF);
+ if (iwe.u.qual.qual > 100)
+ iwe.u.qual.qual = 100;
+
+ if (priv->NF[TYPE_BEACON][TYPE_NOAVG] == 0) {
+ iwe.u.qual.noise = MRVDRV_NF_DEFAULT_SCAN_VALUE;
+ } else {
+ iwe.u.qual.noise = CAL_NF(priv->NF[TYPE_BEACON][TYPE_NOAVG]);
+ }
-/**
- * @brief Find the AP with specific ssid in the scan list
- *
- * @param priv A pointer to wlan_private structure
- * @param pSSID A pointer to AP's ssid
- *
- * @return 0--success, otherwise--fail
- */
-int libertas_find_best_network_SSID(wlan_private * priv,
- struct WLAN_802_11_SSID *pSSID,
- u8 preferred_mode, u8 *out_mode)
-{
- wlan_adapter *adapter = priv->adapter;
- int ret = 0;
- struct bss_descriptor *preqbssid;
- int i;
+ /* Locally created ad-hoc BSSs won't have beacons if this is the
+ * only station in the adhoc network; so get signal strength
+ * from receive statistics.
+ */
+ if ((priv->mode == IW_MODE_ADHOC) && priv->adhoccreate
+ && !lbs_ssid_cmp(priv->curbssparams.ssid,
+ priv->curbssparams.ssid_len,
+ bss->ssid, bss->ssid_len)) {
+ int snr, nf;
+ snr = priv->SNR[TYPE_RXPD][TYPE_AVG] / AVG_SCALE;
+ nf = priv->NF[TYPE_RXPD][TYPE_AVG] / AVG_SCALE;
+ iwe.u.qual.level = CAL_RSSI(snr, nf);
+ }
+ start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_QUAL_LEN);
- lbs_deb_enter(LBS_DEB_ASSOC);
+ /* Add encryption capability */
+ iwe.cmd = SIOCGIWENCODE;
+ if (bss->capability & WLAN_CAPABILITY_PRIVACY) {
+ iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
+ } else {
+ iwe.u.data.flags = IW_ENCODE_DISABLED;
+ }
+ iwe.u.data.length = 0;
+ start = iwe_stream_add_point(info, start, stop, &iwe, bss->ssid);
- memset(pSSID, 0, sizeof(struct WLAN_802_11_SSID));
+ current_val = start + iwe_stream_lcp_len(info);
- wlan_scan_networks(priv, NULL, 1);
- if (adapter->surpriseremoved)
- return -1;
- wait_event_interruptible(adapter->cmd_pending, !adapter->nr_cmd_pending);
+ iwe.cmd = SIOCGIWRATE;
+ iwe.u.bitrate.fixed = 0;
+ iwe.u.bitrate.disabled = 0;
+ iwe.u.bitrate.value = 0;
- i = libertas_find_best_SSID_in_list(adapter, preferred_mode);
- if (i < 0) {
- ret = -1;
- goto out;
+ for (j = 0; j < ARRAY_SIZE(bss->rates) && bss->rates[j]; j++) {
+ /* Bit rate given in 500 kb/s units */
+ iwe.u.bitrate.value = bss->rates[j] * 500000;
+ current_val = iwe_stream_add_value(info, start, current_val,
+ stop, &iwe, IW_EV_PARAM_LEN);
+ }
+ if ((bss->mode == IW_MODE_ADHOC) && priv->adhoccreate
+ && !lbs_ssid_cmp(priv->curbssparams.ssid,
+ priv->curbssparams.ssid_len,
+ bss->ssid, bss->ssid_len)) {
+ iwe.u.bitrate.value = 22 * 500000;
+ current_val = iwe_stream_add_value(info, start, current_val,
+ stop, &iwe, IW_EV_PARAM_LEN);
+ }
+ /* Check if we added any event */
+ if ((current_val - start) > iwe_stream_lcp_len(info))
+ start = current_val;
+
+ memset(&iwe, 0, sizeof(iwe));
+ if (bss->wpa_ie_len) {
+ char buf[MAX_WPA_IE_LEN];
+ memcpy(buf, bss->wpa_ie, bss->wpa_ie_len);
+ iwe.cmd = IWEVGENIE;
+ iwe.u.data.length = bss->wpa_ie_len;
+ start = iwe_stream_add_point(info, start, stop, &iwe, buf);
}
- preqbssid = &adapter->scantable[i];
- memcpy(pSSID, &preqbssid->ssid,
- sizeof(struct WLAN_802_11_SSID));
- *out_mode = preqbssid->mode;
+ memset(&iwe, 0, sizeof(iwe));
+ if (bss->rsn_ie_len) {
+ char buf[MAX_WPA_IE_LEN];
+ memcpy(buf, bss->rsn_ie, bss->rsn_ie_len);
+ iwe.cmd = IWEVGENIE;
+ iwe.u.data.length = bss->rsn_ie_len;
+ start = iwe_stream_add_point(info, start, stop, &iwe, buf);
+ }
- if (!pSSID->ssidlength) {
- ret = -1;
+ if (bss->mesh) {
+ char custom[MAX_CUSTOM_LEN];
+ char *p = custom;
+
+ iwe.cmd = IWEVCUSTOM;
+ p += snprintf(p, MAX_CUSTOM_LEN, "mesh-type: olpc");
+ iwe.u.data.length = p - custom;
+ if (iwe.u.data.length)
+ start = iwe_stream_add_point(info, start, stop,
+ &iwe, custom);
}
out:
- lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
- return ret;
+ lbs_deb_leave_args(LBS_DEB_SCAN, "start %p", start);
+ return start;
}
+
/**
- * @brief Scan Network
+ * @brief Handle Scan Network ioctl
*
* @param dev A pointer to net_device structure
* @param info A pointer to iw_request_info structure
*
* @return 0 --success, otherwise fail
*/
-int libertas_set_scan(struct net_device *dev, struct iw_request_info *info,
- struct iw_param *vwrq, char *extra)
-{
- wlan_private *priv = dev->priv;
- wlan_adapter *adapter = priv->adapter;
-
- lbs_deb_enter(LBS_DEB_SCAN);
-
- wlan_scan_networks(priv, NULL, 0);
-
- if (adapter->surpriseremoved)
- return -1;
-
- lbs_deb_leave(LBS_DEB_SCAN);
- return 0;
-}
-
-/**
- * @brief Send a scan command for all available channels filtered on a spec
- *
- * @param priv A pointer to wlan_private structure
- * @param prequestedssid A pointer to AP's ssid
- * @param keeppreviousscan Flag used to save/clear scan table before scan
- *
- * @return 0-success, otherwise fail
- */
-int libertas_send_specific_SSID_scan(wlan_private * priv,
- struct WLAN_802_11_SSID *prequestedssid,
- u8 keeppreviousscan)
+int lbs_set_scan(struct net_device *dev, struct iw_request_info *info,
+ union iwreq_data *wrqu, char *extra)
{
- wlan_adapter *adapter = priv->adapter;
- struct wlan_ioctl_user_scan_cfg scancfg;
+ DECLARE_SSID_BUF(ssid);
+ struct lbs_private *priv = dev->ml_priv;
+ int ret = 0;
- lbs_deb_enter(LBS_DEB_ASSOC);
+ lbs_deb_enter(LBS_DEB_WEXT);
- if (prequestedssid == NULL) {
- return -1;
+ if (!priv->radio_on) {
+ ret = -EINVAL;
+ goto out;
}
- memset(&scancfg, 0x00, sizeof(scancfg));
-
- memcpy(scancfg.specificSSID, prequestedssid->ssid,
- prequestedssid->ssidlength);
- scancfg.keeppreviousscan = keeppreviousscan;
-
- wlan_scan_networks(priv, &scancfg, 1);
- if (adapter->surpriseremoved)
- return -1;
- wait_event_interruptible(adapter->cmd_pending, !adapter->nr_cmd_pending);
-
- lbs_deb_leave(LBS_DEB_ASSOC);
- return 0;
-}
-
-/**
- * @brief scan an AP with specific BSSID
- *
- * @param priv A pointer to wlan_private structure
- * @param bssid A pointer to AP's bssid
- * @param keeppreviousscan Flag used to save/clear scan table before scan
- *
- * @return 0-success, otherwise fail
- */
-int libertas_send_specific_BSSID_scan(wlan_private * priv, u8 * bssid, u8 keeppreviousscan)
-{
- struct wlan_ioctl_user_scan_cfg scancfg;
-
- lbs_deb_enter(LBS_DEB_ASSOC);
+ if (!netif_running(dev)) {
+ ret = -ENETDOWN;
+ goto out;
+ }
- if (bssid == NULL) {
- return -1;
+ /* mac80211 does this:
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->type != IEEE80211_IF_TYPE_xxx) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+ */
+
+ if (wrqu->data.length == sizeof(struct iw_scan_req) &&
+ wrqu->data.flags & IW_SCAN_THIS_ESSID) {
+ struct iw_scan_req *req = (struct iw_scan_req *)extra;
+ priv->scan_ssid_len = req->essid_len;
+ memcpy(priv->scan_ssid, req->essid, priv->scan_ssid_len);
+ lbs_deb_wext("set_scan, essid '%s'\n",
+ print_ssid(ssid, priv->scan_ssid, priv->scan_ssid_len));
+ } else {
+ priv->scan_ssid_len = 0;
}
- memset(&scancfg, 0x00, sizeof(scancfg));
- memcpy(scancfg.specificBSSID, bssid, sizeof(scancfg.specificBSSID));
- scancfg.keeppreviousscan = keeppreviousscan;
+ if (!delayed_work_pending(&priv->scan_work))
+ queue_delayed_work(priv->work_thread, &priv->scan_work,
+ msecs_to_jiffies(50));
+ /* set marker that currently a scan is taking place */
+ priv->scan_channel = -1;
- wlan_scan_networks(priv, &scancfg, 1);
- if (priv->adapter->surpriseremoved)
- return -1;
- wait_event_interruptible(priv->adapter->cmd_pending,
- !priv->adapter->nr_cmd_pending);
+ if (priv->surpriseremoved)
+ ret = -EIO;
- lbs_deb_leave(LBS_DEB_ASSOC);
- return 0;
+out:
+ lbs_deb_leave_args(LBS_DEB_WEXT, "ret %d", ret);
+ return ret;
}
+
/**
- * @brief Retrieve the scan table entries via wireless tools IOCTL call
+ * @brief Handle Retrieve scan table ioctl
*
* @param dev A pointer to net_device structure
* @param info A pointer to iw_request_info structure
*
* @return 0 --success, otherwise fail
*/
-int libertas_get_scan(struct net_device *dev, struct iw_request_info *info,
- struct iw_point *dwrq, char *extra)
+int lbs_get_scan(struct net_device *dev, struct iw_request_info *info,
+ struct iw_point *dwrq, char *extra)
{
- wlan_private *priv = dev->priv;
- wlan_adapter *adapter = priv->adapter;
- int ret = 0;
- char *current_ev = extra;
- char *end_buf = extra + IW_SCAN_MAX_DATA;
- struct chan_freq_power *cfp;
- struct bss_descriptor *pscantable;
- char *current_val; /* For rates */
- struct iw_event iwe; /* Temporary buffer */
- int i;
- int j;
- int rate;
-#define PERFECT_RSSI ((u8)50)
-#define WORST_RSSI ((u8)0)
-#define RSSI_DIFF ((u8)(PERFECT_RSSI - WORST_RSSI))
- u8 rssi;
-
- u8 buf[16 + 256 * 2];
- u8 *ptr;
-
- lbs_deb_enter(LBS_DEB_ASSOC);
-
- /*
- * if there's either commands in the queue or one being
- * processed return -EAGAIN for iwlist to retry later.
- */
- if (adapter->nr_cmd_pending)
+#define SCAN_ITEM_SIZE 128
+ struct lbs_private *priv = dev->ml_priv;
+ int err = 0;
+ char *ev = extra;
+ char *stop = ev + dwrq->length;
+ struct bss_descriptor *iter_bss;
+ struct bss_descriptor *safe;
+
+ lbs_deb_enter(LBS_DEB_WEXT);
+
+ /* iwlist should wait until the current scan is finished */
+ if (priv->scan_channel)
return -EAGAIN;
- if (adapter->last_scanned_channel) {
- wlan_scan_networks(priv, NULL, 0);
- return -EAGAIN;
+ /* Update RSSI if current BSS is a locally created ad-hoc BSS */
+ if ((priv->mode == IW_MODE_ADHOC) && priv->adhoccreate) {
+ err = lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
+ CMD_OPTION_WAITFORRSP, 0, NULL);
+ if (err)
+ goto out;
}
- if (adapter->connect_status == libertas_connected)
- lbs_deb_scan("current ssid '%s'\n",
- adapter->curbssparams.ssid.ssid);
+ mutex_lock(&priv->lock);
+ list_for_each_entry_safe (iter_bss, safe, &priv->network_list, list) {
+ char *next_ev;
+ unsigned long stale_time;
- lbs_deb_scan("Scan: Get: numinscantable = %d\n",
- adapter->numinscantable);
-
- /* The old API using SIOCGIWAPLIST had a hard limit of IW_MAX_AP.
- * The new API using SIOCGIWSCAN is only limited by buffer size
- * WE-14 -> WE-16 the buffer is limited to IW_SCAN_MAX_DATA bytes
- * which is 4096.
- */
- for (i = 0; i < adapter->numinscantable; i++) {
- if ((current_ev + MAX_SCAN_CELL_SIZE) >= end_buf) {
- lbs_deb_scan("i=%d break out: current_ev=%p end_buf=%p "
- "MAX_SCAN_CELL_SIZE=%zd\n",
- i, current_ev, end_buf, MAX_SCAN_CELL_SIZE);
+ if (stop - ev < SCAN_ITEM_SIZE) {
+ err = -E2BIG;
break;
}
- pscantable = &adapter->scantable[i];
-
- lbs_deb_scan("i %d, ssid '%s'\n", i, pscantable->ssid.ssid);
-
- cfp =
- libertas_find_cfp_by_band_and_channel(adapter, 0,
- pscantable->channel);
- if (!cfp) {
- lbs_deb_scan("Invalid channel number %d\n",
- pscantable->channel);
+ /* For mesh device, list only mesh networks */
+ if (dev == priv->mesh_dev && !iter_bss->mesh)
continue;
- }
- if (!ssid_valid(&adapter->scantable[i].ssid)) {
+ /* Prune old an old scan result */
+ stale_time = iter_bss->last_scanned + DEFAULT_MAX_SCAN_AGE;
+ if (time_after(jiffies, stale_time)) {
+ list_move_tail(&iter_bss->list, &priv->network_free_list);
+ clear_bss_descriptor(iter_bss);
continue;
}
- /* First entry *MUST* be the AP MAC address */
- iwe.cmd = SIOCGIWAP;
- iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
- memcpy(iwe.u.ap_addr.sa_data,
- &adapter->scantable[i].macaddress, ETH_ALEN);
-
- iwe.len = IW_EV_ADDR_LEN;
- current_ev =
- iwe_stream_add_event(current_ev, end_buf, &iwe, iwe.len);
-
- //Add the ESSID
- iwe.u.data.length = adapter->scantable[i].ssid.ssidlength;
-
- if (iwe.u.data.length > 32) {
- iwe.u.data.length = 32;
- }
-
- iwe.cmd = SIOCGIWESSID;
- iwe.u.data.flags = 1;
- iwe.len = IW_EV_POINT_LEN + iwe.u.data.length;
- current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
- adapter->scantable[i].ssid.
- ssid);
-
- //Add mode
- iwe.cmd = SIOCGIWMODE;
- iwe.u.mode = adapter->scantable[i].mode;
- iwe.len = IW_EV_UINT_LEN;
- current_ev =
- iwe_stream_add_event(current_ev, end_buf, &iwe, iwe.len);
-
- //frequency
- iwe.cmd = SIOCGIWFREQ;
- iwe.u.freq.m = (long)cfp->freq * 100000;
- iwe.u.freq.e = 1;
- iwe.len = IW_EV_FREQ_LEN;
- current_ev =
- iwe_stream_add_event(current_ev, end_buf, &iwe, iwe.len);
-
- /* Add quality statistics */
- iwe.cmd = IWEVQUAL;
- iwe.u.qual.updated = IW_QUAL_ALL_UPDATED;
- iwe.u.qual.level = SCAN_RSSI(adapter->scantable[i].rssi);
-
- rssi = iwe.u.qual.level - MRVDRV_NF_DEFAULT_SCAN_VALUE;
- iwe.u.qual.qual =
- (100 * RSSI_DIFF * RSSI_DIFF - (PERFECT_RSSI - rssi) *
- (15 * (RSSI_DIFF) + 62 * (PERFECT_RSSI - rssi))) /
- (RSSI_DIFF * RSSI_DIFF);
- if (iwe.u.qual.qual > 100)
- iwe.u.qual.qual = 100;
- else if (iwe.u.qual.qual < 1)
- iwe.u.qual.qual = 0;
-
- if (adapter->NF[TYPE_BEACON][TYPE_NOAVG] == 0) {
- iwe.u.qual.noise = MRVDRV_NF_DEFAULT_SCAN_VALUE;
- } else {
- iwe.u.qual.noise =
- CAL_NF(adapter->NF[TYPE_BEACON][TYPE_NOAVG]);
- }
- if ((adapter->mode == IW_MODE_ADHOC) &&
- !libertas_SSID_cmp(&adapter->curbssparams.ssid,
- &adapter->scantable[i].ssid)
- && adapter->adhoccreate) {
- ret = libertas_prepare_and_send_command(priv,
- cmd_802_11_rssi,
- 0,
- cmd_option_waitforrsp,
- 0, NULL);
-
- if (!ret) {
- iwe.u.qual.level =
- CAL_RSSI(adapter->SNR[TYPE_RXPD][TYPE_AVG] /
- AVG_SCALE,
- adapter->NF[TYPE_RXPD][TYPE_AVG] /
- AVG_SCALE);
- }
- }
- iwe.len = IW_EV_QUAL_LEN;
- current_ev =
- iwe_stream_add_event(current_ev, end_buf, &iwe, iwe.len);
-
- /* Add encryption capability */
- iwe.cmd = SIOCGIWENCODE;
- if (adapter->scantable[i].privacy) {
- iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
- } else {
- iwe.u.data.flags = IW_ENCODE_DISABLED;
- }
- iwe.u.data.length = 0;
- iwe.len = IW_EV_POINT_LEN + iwe.u.data.length;
- current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
- adapter->scantable->ssid.
- ssid);
-
- current_val = current_ev + IW_EV_LCP_LEN;
-
- iwe.cmd = SIOCGIWRATE;
-
- iwe.u.bitrate.fixed = 0;
- iwe.u.bitrate.disabled = 0;
- iwe.u.bitrate.value = 0;
-
- /* Bit rate given in 500 kb/s units (+ 0x80) */
- for (j = 0; j < sizeof(adapter->scantable[i].libertas_supported_rates);
- j++) {
- if (adapter->scantable[i].libertas_supported_rates[j] == 0) {
- break;
- }
- rate =
- (adapter->scantable[i].libertas_supported_rates[j] & 0x7F) *
- 500000;
- if (rate > iwe.u.bitrate.value) {
- iwe.u.bitrate.value = rate;
- }
-
- iwe.u.bitrate.value =
- (adapter->scantable[i].libertas_supported_rates[j]
- & 0x7f) * 500000;
- iwe.len = IW_EV_PARAM_LEN;
- current_ev =
- iwe_stream_add_value(current_ev, current_val,
- end_buf, &iwe, iwe.len);
-
- }
- if ((adapter->scantable[i].mode == IW_MODE_ADHOC)
- && !libertas_SSID_cmp(&adapter->curbssparams.ssid,
- &adapter->scantable[i].ssid)
- && adapter->adhoccreate) {
- iwe.u.bitrate.value = 22 * 500000;
- }
- iwe.len = IW_EV_PARAM_LEN;
- current_ev =
- iwe_stream_add_value(current_ev, current_val, end_buf, &iwe,
- iwe.len);
-
- /* Add new value to event */
- current_val = current_ev + IW_EV_LCP_LEN;
-
- if (adapter->scantable[i].rsn_ie[0] == WPA2_IE) {
- memset(&iwe, 0, sizeof(iwe));
- memset(buf, 0, sizeof(buf));
- memcpy(buf, adapter->scantable[i].rsn_ie,
- adapter->scantable[i].rsn_ie_len);
- iwe.cmd = IWEVGENIE;
- iwe.u.data.length = adapter->scantable[i].rsn_ie_len;
- iwe.len = IW_EV_POINT_LEN + iwe.u.data.length;
- current_ev = iwe_stream_add_point(current_ev, end_buf,
- &iwe, buf);
- }
- if (adapter->scantable[i].wpa_ie[0] == WPA_IE) {
- memset(&iwe, 0, sizeof(iwe));
- memset(buf, 0, sizeof(buf));
- memcpy(buf, adapter->scantable[i].wpa_ie,
- adapter->scantable[i].wpa_ie_len);
- iwe.cmd = IWEVGENIE;
- iwe.u.data.length = adapter->scantable[i].wpa_ie_len;
- iwe.len = IW_EV_POINT_LEN + iwe.u.data.length;
- current_ev = iwe_stream_add_point(current_ev, end_buf,
- &iwe, buf);
- }
-
-
- if (adapter->scantable[i].extra_ie != 0) {
- memset(&iwe, 0, sizeof(iwe));
- memset(buf, 0, sizeof(buf));
- ptr = buf;
- ptr += sprintf(ptr, "extra_ie");
- iwe.u.data.length = strlen(buf);
-
- lbs_deb_scan("iwe.u.data.length %d\n",
- iwe.u.data.length);
- lbs_deb_scan("BUF: %s \n", buf);
-
- iwe.cmd = IWEVCUSTOM;
- iwe.len = IW_EV_POINT_LEN + iwe.u.data.length;
- current_ev =
- iwe_stream_add_point(current_ev, end_buf, &iwe,
- buf);
- }
-
- current_val = current_ev + IW_EV_LCP_LEN;
-
- /*
- * Check if we added any event
- */
- if ((current_val - current_ev) > IW_EV_LCP_LEN)
- current_ev = current_val;
+ /* Translate to WE format this entry */
+ next_ev = lbs_translate_scan(priv, info, ev, stop, iter_bss);
+ if (next_ev == NULL)
+ continue;
+ ev = next_ev;
}
+ mutex_unlock(&priv->lock);
- dwrq->length = (current_ev - extra);
+ dwrq->length = (ev - extra);
dwrq->flags = 0;
-
- lbs_deb_leave(LBS_DEB_ASSOC);
- return 0;
+out:
+ lbs_deb_leave_args(LBS_DEB_WEXT, "ret %d", err);
+ return err;
}
-/**
- * @brief Prepare a scan command to be sent to the firmware
- *
- * Use the wlan_scan_cmd_config sent to the command processing module in
- * the libertas_prepare_and_send_command to configure a cmd_ds_802_11_scan command
- * struct to send to firmware.
- *
- * The fixed fields specifying the BSS type and BSSID filters as well as a
- * variable number/length of TLVs are sent in the command to firmware.
- *
- * @param priv A pointer to wlan_private structure
- * @param cmd A pointer to cmd_ds_command structure to be sent to
- * firmware with the cmd_DS_801_11_SCAN structure
- * @param pdata_buf Void pointer cast of a wlan_scan_cmd_config struct used
- * to set the fields/TLVs for the command sent to firmware
- *
- * @return 0 or -1
- *
- * @sa wlan_scan_create_channel_list
- */
-int libertas_cmd_80211_scan(wlan_private * priv,
- struct cmd_ds_command *cmd, void *pdata_buf)
-{
- struct cmd_ds_802_11_scan *pscan = &cmd->params.scan;
- struct wlan_scan_cmd_config *pscancfg;
-
- lbs_deb_enter(LBS_DEB_ASSOC);
-
- pscancfg = pdata_buf;
- /* Set fixed field variables in scan command */
- pscan->bsstype = pscancfg->bsstype;
- memcpy(pscan->BSSID, pscancfg->specificBSSID, sizeof(pscan->BSSID));
- memcpy(pscan->tlvbuffer, pscancfg->tlvbuffer, pscancfg->tlvbufferlen);
- cmd->command = cpu_to_le16(cmd_802_11_scan);
- /* size is equal to the sizeof(fixed portions) + the TLV len + header */
- cmd->size = cpu_to_le16(sizeof(pscan->bsstype)
- + sizeof(pscan->BSSID)
- + pscancfg->tlvbufferlen + S_DS_GEN);
+/*********************************************************************/
+/* */
+/* Command execution */
+/* */
+/*********************************************************************/
- lbs_deb_scan("SCAN_CMD: command=%x, size=%x, seqnum=%x\n",
- cmd->command, cmd->size, cmd->seqnum);
-
- lbs_deb_leave(LBS_DEB_ASSOC);
- return 0;
-}
/**
* @brief This function handles the command response of scan
*
+ * Called from handle_cmd_response() in cmdrespc.
+ *
* The response buffer for the scan command has the following
* memory layout:
*
* | bufsize and sizeof the fixed fields above) |
* .-----------------------------------------------------------.
*
- * @param priv A pointer to wlan_private structure
+ * @param priv A pointer to struct lbs_private structure
* @param resp A pointer to cmd_ds_command
*
* @return 0 or -1
*/
-int libertas_ret_80211_scan(wlan_private * priv, struct cmd_ds_command *resp)
+static int lbs_ret_80211_scan(struct lbs_private *priv, unsigned long dummy,
+ struct cmd_header *resp)
{
- wlan_adapter *adapter = priv->adapter;
- struct cmd_ds_802_11_scan_rsp *pscan;
- struct bss_descriptor newbssentry;
- struct mrvlietypes_data *ptlv;
- struct mrvlietypes_tsftimestamp *ptsftlv;
- u8 *pbssinfo;
- u16 scanrespsize;
+ struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
+ struct bss_descriptor *iter_bss;
+ struct bss_descriptor *safe;
+ uint8_t *bssinfo;
+ uint16_t scanrespsize;
int bytesleft;
- int numintable;
- int bssIdx;
int idx;
int tlvbufsize;
- u64 tsfval;
int ret;
- lbs_deb_enter(LBS_DEB_ASSOC);
+ lbs_deb_enter(LBS_DEB_SCAN);
- pscan = &resp->params.scanresp;
+ /* Prune old entries from scan table */
+ list_for_each_entry_safe (iter_bss, safe, &priv->network_list, list) {
+ unsigned long stale_time = iter_bss->last_scanned + DEFAULT_MAX_SCAN_AGE;
+ if (time_before(jiffies, stale_time))
+ continue;
+ list_move_tail (&iter_bss->list, &priv->network_free_list);
+ clear_bss_descriptor(iter_bss);
+ }
- if (pscan->nr_sets > MRVDRV_MAX_BSSID_LIST) {
- lbs_deb_scan(
- "SCAN_RESP: Invalid number of AP returned (%d)!!\n",
- pscan->nr_sets);
+ if (scanresp->nr_sets > MAX_NETWORK_COUNT) {
+ lbs_deb_scan("SCAN_RESP: too many scan results (%d, max %d)\n",
+ scanresp->nr_sets, MAX_NETWORK_COUNT);
ret = -1;
goto done;
}
- bytesleft = le16_to_cpu(pscan->bssdescriptsize);
+ bytesleft = get_unaligned_le16(&scanresp->bssdescriptsize);
lbs_deb_scan("SCAN_RESP: bssdescriptsize %d\n", bytesleft);
scanrespsize = le16_to_cpu(resp->size);
- lbs_deb_scan("SCAN_RESP: returned %d AP before parsing\n",
- pscan->nr_sets);
+ lbs_deb_scan("SCAN_RESP: scan results %d\n", scanresp->nr_sets);
- numintable = adapter->numinscantable;
- pbssinfo = pscan->bssdesc_and_tlvbuffer;
+ bssinfo = scanresp->bssdesc_and_tlvbuffer;
/* The size of the TLV buffer is equal to the entire command response
* size (scanrespsize) minus the fixed fields (sizeof()'s), the
* BSS Descriptions (bssdescriptsize as bytesLef) and the command
- * response header (S_DS_GEN)
+ * response header (sizeof(struct cmd_header))
*/
- tlvbufsize = scanrespsize - (bytesleft + sizeof(pscan->bssdescriptsize)
- + sizeof(pscan->nr_sets)
- + S_DS_GEN);
-
- ptlv = (struct mrvlietypes_data *) (pscan->bssdesc_and_tlvbuffer + bytesleft);
-
- /* Search the TLV buffer space in the scan response for any valid TLVs */
- wlan_ret_802_11_scan_get_tlv_ptrs(ptlv, tlvbufsize, &ptsftlv);
+ tlvbufsize = scanrespsize - (bytesleft + sizeof(scanresp->bssdescriptsize)
+ + sizeof(scanresp->nr_sets)
+ + sizeof(struct cmd_header));
/*
- * Process each scan response returned (pscan->nr_sets). Save
+ * Process each scan response returned (scanresp->nr_sets). Save
* the information in the newbssentry and then insert into the
* driver scan table either as an update to an existing entry
* or as an addition at the end of the table
*/
- for (idx = 0; idx < pscan->nr_sets && bytesleft; idx++) {
- /* Zero out the newbssentry we are about to store info in */
- memset(&newbssentry, 0x00, sizeof(newbssentry));
+ for (idx = 0; idx < scanresp->nr_sets && bytesleft; idx++) {
+ struct bss_descriptor new;
+ struct bss_descriptor *found = NULL;
+ struct bss_descriptor *oldest = NULL;
/* Process the data fields and IEs returned for this BSS */
- if ((InterpretBSSDescriptionWithIE(&newbssentry,
- &pbssinfo,
- &bytesleft) ==
- 0)
- && CHECK_SSID_IS_VALID(&newbssentry.ssid)) {
-
- lbs_deb_scan(
- "SCAN_RESP: BSSID = %02x:%02x:%02x:%02x:%02x:%02x\n",
- newbssentry.macaddress[0],
- newbssentry.macaddress[1],
- newbssentry.macaddress[2],
- newbssentry.macaddress[3],
- newbssentry.macaddress[4],
- newbssentry.macaddress[5]);
-
- /*
- * Search the scan table for the same bssid
- */
- for (bssIdx = 0; bssIdx < numintable; bssIdx++) {
- if (memcmp(newbssentry.macaddress,
- adapter->scantable[bssIdx].
- macaddress,
- sizeof(newbssentry.macaddress)) ==
- 0) {
- /*
- * If the SSID matches as well, it is a duplicate of
- * this entry. Keep the bssIdx set to this
- * entry so we replace the old contents in the table
- */
- if ((newbssentry.ssid.ssidlength ==
- adapter->scantable[bssIdx].ssid.
- ssidlength)
- &&
- (memcmp
- (newbssentry.ssid.ssid,
- adapter->scantable[bssIdx].ssid.
- ssid,
- newbssentry.ssid.ssidlength) ==
- 0)) {
- lbs_deb_scan(
- "SCAN_RESP: Duplicate of index: %d\n",
- bssIdx);
- break;
- }
- }
- }
- /*
- * If the bssIdx is equal to the number of entries in the table,
- * the new entry was not a duplicate; append it to the scan
- * table
- */
- if (bssIdx == numintable) {
- /* Range check the bssIdx, keep it limited to the last entry */
- if (bssIdx == MRVDRV_MAX_BSSID_LIST) {
- bssIdx--;
- } else {
- numintable++;
- }
- }
-
- /*
- * If the TSF TLV was appended to the scan results, save the
- * this entries TSF value in the networktsf field. The
- * networktsf is the firmware's TSF value at the time the
- * beacon or probe response was received.
- */
- if (ptsftlv) {
- memcpy(&tsfval, &ptsftlv->tsftable[idx],
- sizeof(tsfval));
- tsfval = le64_to_cpu(tsfval);
+ memset(&new, 0, sizeof (struct bss_descriptor));
+ if (lbs_process_bss(&new, &bssinfo, &bytesleft) != 0) {
+ /* error parsing the scan response, skipped */
+ lbs_deb_scan("SCAN_RESP: process_bss returned ERROR\n");
+ continue;
+ }
- memcpy(&newbssentry.networktsf,
- &tsfval, sizeof(newbssentry.networktsf));
+ /* Try to find this bss in the scan table */
+ list_for_each_entry (iter_bss, &priv->network_list, list) {
+ if (is_same_network(iter_bss, &new)) {
+ found = iter_bss;
+ break;
}
- /* Copy the locally created newbssentry to the scan table */
- memcpy(&adapter->scantable[bssIdx],
- &newbssentry,
- sizeof(adapter->scantable[bssIdx]));
+ if ((oldest == NULL) ||
+ (iter_bss->last_scanned < oldest->last_scanned))
+ oldest = iter_bss;
+ }
+ if (found) {
+ /* found, clear it */
+ clear_bss_descriptor(found);
+ } else if (!list_empty(&priv->network_free_list)) {
+ /* Pull one from the free list */
+ found = list_entry(priv->network_free_list.next,
+ struct bss_descriptor, list);
+ list_move_tail(&found->list, &priv->network_list);
+ } else if (oldest) {
+ /* If there are no more slots, expire the oldest */
+ found = oldest;
+ clear_bss_descriptor(found);
+ list_move_tail(&found->list, &priv->network_list);
} else {
-
- /* error parsing/interpreting the scan response, skipped */
- lbs_deb_scan("SCAN_RESP: "
- "InterpretBSSDescriptionWithIE returned ERROR\n");
+ continue;
}
- }
- lbs_deb_scan("SCAN_RESP: Scanned %2d APs, %d valid, %d total\n",
- pscan->nr_sets, numintable - adapter->numinscantable,
- numintable);
+ lbs_deb_scan("SCAN_RESP: BSSID %pM\n", new.bssid);
+
+ /* Copy the locally created newbssentry to the scan table */
+ memcpy(found, &new, offsetof(struct bss_descriptor, list));
+ }
- /* Update the total number of BSSIDs in the scan table */
- adapter->numinscantable = numintable;
ret = 0;
done:
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff