diff options
| -rw-r--r-- | drivers/net/wireless/libertas/assoc.c | 352 | ||||
| -rw-r--r-- | drivers/net/wireless/libertas/dev.h | 41 | ||||
| -rw-r--r-- | drivers/net/wireless/libertas/main.c | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/libertas/scan.c | 364 | ||||
| -rw-r--r-- | drivers/net/wireless/libertas/scan.h | 62 | ||||
| -rw-r--r-- | drivers/net/wireless/libertas/wext.c | 1 |
6 files changed, 397 insertions, 424 deletions
diff --git a/drivers/net/wireless/libertas/assoc.c b/drivers/net/wireless/libertas/assoc.c index e794e93a2297..319b4f931a62 100644 --- a/drivers/net/wireless/libertas/assoc.c +++ b/drivers/net/wireless/libertas/assoc.c @@ -5,6 +5,7 @@ #include "assoc.h" #include "decl.h" #include "host.h" +#include "scan.h" #include "cmd.h" @@ -170,6 +171,272 @@ int lbs_stop_adhoc_network(struct lbs_private *priv) 0, CMD_OPTION_WAITFORRSP, 0, NULL); } +static inline int match_bss_no_security(struct lbs_802_11_security *secinfo, + struct bss_descriptor *match_bss) +{ + if (!secinfo->wep_enabled && !secinfo->WPAenabled + && !secinfo->WPA2enabled + && match_bss->wpa_ie[0] != MFIE_TYPE_GENERIC + && match_bss->rsn_ie[0] != MFIE_TYPE_RSN + && !(match_bss->capability & WLAN_CAPABILITY_PRIVACY)) + return 1; + else + return 0; +} + +static inline int match_bss_static_wep(struct lbs_802_11_security *secinfo, + struct bss_descriptor *match_bss) +{ + if (secinfo->wep_enabled && !secinfo->WPAenabled + && !secinfo->WPA2enabled + && (match_bss->capability & WLAN_CAPABILITY_PRIVACY)) + return 1; + else + return 0; +} + +static inline int match_bss_wpa(struct lbs_802_11_security *secinfo, + struct bss_descriptor *match_bss) +{ + if (!secinfo->wep_enabled && secinfo->WPAenabled + && (match_bss->wpa_ie[0] == MFIE_TYPE_GENERIC) + /* privacy bit may NOT be set in some APs like LinkSys WRT54G + && (match_bss->capability & WLAN_CAPABILITY_PRIVACY) */ + ) + return 1; + else + return 0; +} + +static inline int match_bss_wpa2(struct lbs_802_11_security *secinfo, + struct bss_descriptor *match_bss) +{ + if (!secinfo->wep_enabled && secinfo->WPA2enabled && + (match_bss->rsn_ie[0] == MFIE_TYPE_RSN) + /* privacy bit may NOT be set in some APs like LinkSys WRT54G + (match_bss->capability & WLAN_CAPABILITY_PRIVACY) */ + ) + return 1; + else + return 0; +} + +static inline int match_bss_dynamic_wep(struct lbs_802_11_security *secinfo, + struct bss_descriptor *match_bss) +{ + if (!secinfo->wep_enabled && !secinfo->WPAenabled + && !secinfo->WPA2enabled + && (match_bss->wpa_ie[0] != MFIE_TYPE_GENERIC) + && (match_bss->rsn_ie[0] != MFIE_TYPE_RSN) + && (match_bss->capability & WLAN_CAPABILITY_PRIVACY)) + return 1; + else + return 0; +} + +/** + * @brief Check if a scanned network compatible with the driver settings + * + * 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 + * + * + * @param priv A pointer to struct lbs_private + * @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 + */ +static int is_network_compatible(struct lbs_private *priv, + struct bss_descriptor *bss, uint8_t mode) +{ + int matched = 0; + + lbs_deb_enter(LBS_DEB_SCAN); + + if (bss->mode != mode) + goto done; + + matched = match_bss_no_security(&priv->secinfo, bss); + if (matched) + goto done; + matched = match_bss_static_wep(&priv->secinfo, bss); + if (matched) + goto done; + matched = match_bss_wpa(&priv->secinfo, bss); + if (matched) { + lbs_deb_scan("is_network_compatible() WPA: wpa_ie 0x%x " + "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s " + "privacy 0x%x\n", bss->wpa_ie[0], bss->rsn_ie[0], + priv->secinfo.wep_enabled ? "e" : "d", + priv->secinfo.WPAenabled ? "e" : "d", + priv->secinfo.WPA2enabled ? "e" : "d", + (bss->capability & WLAN_CAPABILITY_PRIVACY)); + goto done; + } + matched = match_bss_wpa2(&priv->secinfo, bss); + if (matched) { + lbs_deb_scan("is_network_compatible() WPA2: wpa_ie 0x%x " + "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s " + "privacy 0x%x\n", bss->wpa_ie[0], bss->rsn_ie[0], + priv->secinfo.wep_enabled ? "e" : "d", + priv->secinfo.WPAenabled ? "e" : "d", + priv->secinfo.WPA2enabled ? "e" : "d", + (bss->capability & WLAN_CAPABILITY_PRIVACY)); + goto done; + } + matched = match_bss_dynamic_wep(&priv->secinfo, bss); + if (matched) { + lbs_deb_scan("is_network_compatible() dynamic WEP: " + "wpa_ie 0x%x wpa2_ie 0x%x privacy 0x%x\n", + bss->wpa_ie[0], bss->rsn_ie[0], + (bss->capability & WLAN_CAPABILITY_PRIVACY)); + goto done; + } + + /* bss security settings don't match those configured on card */ + lbs_deb_scan("is_network_compatible() FAILED: wpa_ie 0x%x " + "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s privacy 0x%x\n", + bss->wpa_ie[0], bss->rsn_ie[0], + priv->secinfo.wep_enabled ? "e" : "d", + priv->secinfo.WPAenabled ? "e" : "d", + priv->secinfo.WPA2enabled ? "e" : "d", + (bss->capability & WLAN_CAPABILITY_PRIVACY)); + +done: + lbs_deb_leave_args(LBS_DEB_SCAN, "matched: %d", matched); + return matched; +} + +/** + * @brief This function finds a specific compatible BSSID in the scan list + * + * Used in association code + * + * @param priv A pointer to struct lbs_private + * @param bssid BSSID to find in the scan list + * @param mode Network mode: Infrastructure or IBSS + * + * @return index in BSSID list, or error return code (< 0) + */ +static struct bss_descriptor *lbs_find_bssid_in_list(struct lbs_private *priv, + uint8_t *bssid, uint8_t mode) +{ + struct bss_descriptor *iter_bss; + struct bss_descriptor *found_bss = NULL; + + lbs_deb_enter(LBS_DEB_SCAN); + + if (!bssid) + goto out; + + lbs_deb_hex(LBS_DEB_SCAN, "looking for", bssid, ETH_ALEN); + + /* Look through the scan table for a compatible match. 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 + */ + mutex_lock(&priv->lock); + list_for_each_entry(iter_bss, &priv->network_list, list) { + if (compare_ether_addr(iter_bss->bssid, bssid)) + continue; /* bssid doesn't match */ + switch (mode) { + case IW_MODE_INFRA: + case IW_MODE_ADHOC: + if (!is_network_compatible(priv, iter_bss, mode)) + break; + found_bss = iter_bss; + break; + default: + found_bss = iter_bss; + break; + } + } + mutex_unlock(&priv->lock); + +out: + lbs_deb_leave_args(LBS_DEB_SCAN, "found_bss %p", found_bss); + return found_bss; +} + +/** + * @brief This function finds ssid in ssid list. + * + * Used in association code + * + * @param priv A pointer to struct lbs_private + * @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 + */ +static struct bss_descriptor *lbs_find_ssid_in_list(struct lbs_private *priv, + uint8_t *ssid, uint8_t ssid_len, + uint8_t *bssid, uint8_t mode, + int channel) +{ + u32 bestrssi = 0; + struct bss_descriptor *iter_bss = NULL; + struct bss_descriptor *found_bss = NULL; + struct bss_descriptor *tmp_oldest = NULL; + + lbs_deb_enter(LBS_DEB_SCAN); + + mutex_lock(&priv->lock); + + list_for_each_entry(iter_bss, &priv->network_list, list) { + if (!tmp_oldest || + (iter_bss->last_scanned < tmp_oldest->last_scanned)) + tmp_oldest = iter_bss; + + if (lbs_ssid_cmp(iter_bss->ssid, iter_bss->ssid_len, + ssid, ssid_len) != 0) + continue; /* ssid doesn't match */ + if (bssid && compare_ether_addr(iter_bss->bssid, bssid) != 0) + continue; /* bssid doesn't match */ + if ((channel > 0) && (iter_bss->channel != channel)) + continue; /* channel doesn't match */ + + switch (mode) { + case IW_MODE_INFRA: + case IW_MODE_ADHOC: + if (!is_network_compatible(priv, iter_bss, mode)) + break; + + if (bssid) { + /* Found requested BSSID */ + found_bss = iter_bss; + goto out; + } + + if (SCAN_RSSI(iter_bss->rssi) > bestrssi) { + bestrssi = SCAN_RSSI(iter_bss->rssi); + found_bss = iter_bss; + } + break; + case IW_MODE_AUTO: + default: + if (SCAN_RSSI(iter_bss->rssi) > bestrssi) { + bestrssi = SCAN_RSSI(iter_bss->rssi); + found_bss = iter_bss; + } + break; + } + } + +out: + mutex_unlock(&priv->lock); + lbs_deb_leave_args(LBS_DEB_SCAN, "found_bss %p", found_bss); + return found_bss; +} + static int assoc_helper_essid(struct lbs_private *priv, struct assoc_request * assoc_req) { @@ -617,6 +884,91 @@ static int should_stop_adhoc(struct lbs_private *priv, } +/** + * @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 priv A pointer to struct lbs_private + * + * @return index in BSSID list + */ +static struct bss_descriptor *lbs_find_best_ssid_in_list( + struct lbs_private *priv, uint8_t mode) +{ + uint8_t bestrssi = 0; + struct bss_descriptor *iter_bss; + struct bss_descriptor *best_bss = NULL; + + lbs_deb_enter(LBS_DEB_SCAN); + + mutex_lock(&priv->lock); + + list_for_each_entry(iter_bss, &priv->network_list, list) { + switch (mode) { + case IW_MODE_INFRA: + case IW_MODE_ADHOC: + if (!is_network_compatible(priv, iter_bss, mode)) + break; + if (SCAN_RSSI(iter_bss->rssi) <= bestrssi) + break; + bestrssi = SCAN_RSSI(iter_bss->rssi); + best_bss = iter_bss; + break; + case IW_MODE_AUTO: + default: + if (SCAN_RSSI(iter_bss->rssi) <= bestrssi) + break; + bestrssi = SCAN_RSSI(iter_bss->rssi); + best_bss = iter_bss; + break; + } + } + + mutex_unlock(&priv->lock); + lbs_deb_leave_args(LBS_DEB_SCAN, "best_bss %p", best_bss); + return best_bss; +} + +/** + * @brief Find the best AP + * + * Used from association worker. + * + * @param priv A pointer to struct lbs_private structure + * @param pSSID A pointer to AP's ssid + * + * @return 0--success, otherwise--fail + */ +static int lbs_find_best_network_ssid(struct lbs_private *priv, + uint8_t *out_ssid, uint8_t *out_ssid_len, uint8_t preferred_mode, + uint8_t *out_mode) +{ + int ret = -1; + struct bss_descriptor *found; + + lbs_deb_enter(LBS_DEB_SCAN); + + priv->scan_ssid_len = 0; + lbs_scan_networks(priv, 1); + if (priv->surpriseremoved) + goto out; + + found = lbs_find_best_ssid_in_list(priv, preferred_mode); + if (found && (found->ssid_len > 0)) { + memcpy(out_ssid, &found->ssid, IW_ESSID_MAX_SIZE); + *out_ssid_len = found->ssid_len; + *out_mode = found->mode; + ret = 0; + } + +out: + lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); + return ret; +} + + void lbs_association_worker(struct work_struct *work) { struct lbs_private *priv = container_of(work, struct lbs_private, diff --git a/drivers/net/wireless/libertas/dev.h b/drivers/net/wireless/libertas/dev.h index 3f3e7f6e68b3..1e6bae80396b 100644 --- a/drivers/net/wireless/libertas/dev.h +++ b/drivers/net/wireless/libertas/dev.h @@ -10,9 +10,10 @@ #include <linux/wireless.h> #include <linux/ethtool.h> #include <linux/debugfs.h> +#include <net/ieee80211.h> #include "defs.h" -#include "scan.h" +#include "hostcmd.h" extern struct ethtool_ops lbs_ethtool_ops; @@ -325,6 +326,44 @@ struct lbs_private { extern struct cmd_confirm_sleep confirm_sleep; +/** + * @brief Structure used to store information for each beacon/probe response + */ +struct bss_descriptor { + u8 bssid[ETH_ALEN]; + + u8 ssid[IW_ESSID_MAX_SIZE + 1]; + u8 ssid_len; + + u16 capability; + u32 rssi; + u32 channel; + u16 beaconperiod; + u32 atimwindow; + + /* IW_MODE_AUTO, IW_MODE_ADHOC, IW_MODE_INFRA */ + u8 mode; + + /* zero-terminated array of supported data rates */ + u8 rates[MAX_RATES + 1]; + + unsigned long last_scanned; + + union ieeetypes_phyparamset phyparamset; + union IEEEtypes_ssparamset ssparamset; + + struct ieeetypes_countryinfofullset countryinfo; + + u8 wpa_ie[MAX_WPA_IE_LEN]; + size_t wpa_ie_len; + u8 rsn_ie[MAX_WPA_IE_LEN]; + size_t rsn_ie_len; + + u8 mesh; + + struct list_head list; +}; + /** Association request * * Encapsulates all the options that describe a specific assocation request diff --git a/drivers/net/wireless/libertas/main.c b/drivers/net/wireless/libertas/main.c index 15c9cc8bab48..8f1122610974 100644 --- a/drivers/net/wireless/libertas/main.c +++ b/drivers/net/wireless/libertas/main.c @@ -19,6 +19,7 @@ #include "dev.h" #include "wext.h" #include "debugfs.h" +#include "scan.h" #include "assoc.h" #include "cmd.h" diff --git a/drivers/net/wireless/libertas/scan.c b/drivers/net/wireless/libertas/scan.c index 1c7003d7de43..e72c97a0d6c1 100644 --- a/drivers/net/wireless/libertas/scan.c +++ b/drivers/net/wireless/libertas/scan.c @@ -4,22 +4,13 @@ * 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 <linux/etherdevice.h> - -#include <net/ieee80211.h> -#include <net/iw_handler.h> - #include <asm/unaligned.h> #include "host.h" #include "decl.h" #include "dev.h" #include "scan.h" -#include "assoc.h" #include "cmd.h" //! Approximate amount of data needed to pass a scan result back to iwlist @@ -110,69 +101,6 @@ int lbs_ssid_cmp(uint8_t *ssid1, uint8_t ssid1_len, uint8_t *ssid2, return memcmp(ssid1, ssid2, ssid1_len); } -static inline int match_bss_no_security(struct lbs_802_11_security *secinfo, - struct bss_descriptor *match_bss) -{ - if (!secinfo->wep_enabled && !secinfo->WPAenabled - && !secinfo->WPA2enabled - && match_bss->wpa_ie[0] != MFIE_TYPE_GENERIC - && match_bss->rsn_ie[0] != MFIE_TYPE_RSN - && !(match_bss->capability & WLAN_CAPABILITY_PRIVACY)) - return 1; - else - return 0; -} - -static inline int match_bss_static_wep(struct lbs_802_11_security *secinfo, - struct bss_descriptor *match_bss) -{ - if (secinfo->wep_enabled && !secinfo->WPAenabled - && !secinfo->WPA2enabled - && (match_bss->capability & WLAN_CAPABILITY_PRIVACY)) - return 1; - else - return 0; -} - -static inline int match_bss_wpa(struct lbs_802_11_security *secinfo, - struct bss_descriptor *match_bss) -{ - if (!secinfo->wep_enabled && secinfo->WPAenabled - && (match_bss->wpa_ie[0] == MFIE_TYPE_GENERIC) - /* privacy bit may NOT be set in some APs like LinkSys WRT54G - && (match_bss->capability & WLAN_CAPABILITY_PRIVACY) */ - ) - return 1; - else - return 0; -} - -static inline int match_bss_wpa2(struct lbs_802_11_security *secinfo, - struct bss_descriptor *match_bss) -{ - if (!secinfo->wep_enabled && secinfo->WPA2enabled - && (match_bss->rsn_ie[0] == MFIE_TYPE_RSN) - /* privacy bit may NOT be set in some APs like LinkSys WRT54G - && (match_bss->capability & WLAN_CAPABILITY_PRIVACY) */ - ) - return 1; - else - return 0; -} - -static inline int match_bss_dynamic_wep(struct lbs_802_11_security *secinfo, - struct bss_descriptor *match_bss) -{ - if (!secinfo->wep_enabled && !secinfo->WPAenabled - && !secinfo->WPA2enabled - && (match_bss->wpa_ie[0] != MFIE_TYPE_GENERIC) - && (match_bss->rsn_ie[0] != MFIE_TYPE_RSN) - && (match_bss->capability & WLAN_CAPABILITY_PRIVACY)) - return 1; - else - return 0; -} - static inline int is_same_network(struct bss_descriptor *src, struct bss_descriptor *dst) { @@ -185,78 +113,6 @@ static inline int is_same_network(struct bss_descriptor *src, !memcmp(src->ssid, dst->ssid, src->ssid_len)); } -/** - * @brief Check if a scanned network compatible with the driver settings - * - * 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 - * - * - * @param priv A pointer to struct lbs_private - * @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 - */ -static int is_network_compatible(struct lbs_private *priv, - struct bss_descriptor *bss, uint8_t mode) -{ - int matched = 0; - - lbs_deb_enter(LBS_DEB_SCAN); - - if (bss->mode != mode) - goto done; - - if ((matched = match_bss_no_security(&priv->secinfo, bss))) { - goto done; - } else if ((matched = match_bss_static_wep(&priv->secinfo, bss))) { - goto done; - } else if ((matched = match_bss_wpa(&priv->secinfo, bss))) { - lbs_deb_scan("is_network_compatible() WPA: wpa_ie 0x%x " - "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s " - "privacy 0x%x\n", bss->wpa_ie[0], bss->rsn_ie[0], - priv->secinfo.wep_enabled ? "e" : "d", - priv->secinfo.WPAenabled ? "e" : "d", - priv->secinfo.WPA2enabled ? "e" : "d", - (bss->capability & WLAN_CAPABILITY_PRIVACY)); - goto done; - } else if ((matched = match_bss_wpa2(&priv->secinfo, bss))) { - lbs_deb_scan("is_network_compatible() WPA2: wpa_ie 0x%x " - "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s " - "privacy 0x%x\n", bss->wpa_ie[0], bss->rsn_ie[0], - priv->secinfo.wep_enabled ? "e" : "d", - priv->secinfo.WPAenabled ? "e" : "d", - priv->secinfo.WPA2enabled ? "e" : "d", - (bss->capability & WLAN_CAPABILITY_PRIVACY)); - goto done; - } else if ((matched = match_bss_dynamic_wep(&priv->secinfo, bss))) { - lbs_deb_scan("is_network_compatible() dynamic WEP: " - "wpa_ie 0x%x wpa2_ie 0x%x privacy 0x%x\n", - bss->wpa_ie[0], bss->rsn_ie[0], - (bss->capability & WLAN_CAPABILITY_PRIVACY)); - goto done; - } - - /* bss security settings don't match those configured on card */ - lbs_deb_scan("is_network_compatible() FAILED: wpa_ie 0x%x " - "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s privacy 0x%x\n", - bss->wpa_ie[0], bss->rsn_ie[0], - priv->secinfo.wep_enabled ? "e" : "d", - priv->secinfo.WPAenabled ? "e" : "d", - priv->secinfo.WPA2enabled ? "e" : "d", - (bss->capability & WLAN_CAPABILITY_PRIVACY)); - -done: - lbs_deb_leave_args(LBS_DEB_SCAN, "matched: %d", matched); - return matched; -} @@ -341,7 +197,6 @@ static int lbs_scan_create_channel_list(struct lbs_private *priv, return chanidx; } - /* * Add SSID TLV of the form: * @@ -359,7 +214,6 @@ static int lbs_scan_add_ssid_tlv(struct lbs_private *priv, u8 *tlv) return sizeof(ssid_tlv->header) + priv->scan_ssid_len; } - /* * Add CHANLIST TLV of the form * @@ -398,7 +252,6 @@ static int lbs_scan_add_chanlist_tlv(uint8_t *tlv, return sizeof(chan_tlv->header) + size; } - /* * Add RATES TLV of the form * @@ -433,7 +286,6 @@ static int lbs_scan_add_rates_tlv(uint8_t *tlv) return sizeof(rate_tlv->header) + i; } - /* * Generate the CMD_802_11_SCAN command with the proper tlv * for a bunch of channels. @@ -482,12 +334,9 @@ out: return ret; } - /** * @brief Internal function used to start a scan based on an input config * - * Also used from debugfs - * * Use the input user scan configuration information when provided in * order to send the appropriate scan commands to firmware to populate or * update the internal driver scan table @@ -497,7 +346,7 @@ out: * * @return 0 or < 0 if error */ -static int lbs_scan_networks(struct lbs_private *priv, int full_scan) +int lbs_scan_networks(struct lbs_private *priv, int full_scan) { int ret = -ENOMEM; struct chanscanparamset *chan_list; @@ -627,9 +476,6 @@ out: return ret; } - - - void lbs_scan_worker(struct work_struct *work) { struct lbs_private *priv = @@ -881,214 +727,6 @@ done: } /** - * @brief This function finds a specific compatible BSSID in the scan list - * - * Used in association code - * - * @param priv A pointer to struct lbs_private - * @param bssid BSSID to find in the scan list - * @param mode Network mode: Infrastructure or IBSS - * - * @return index in BSSID list, or error return code (< 0) - */ -struct bss_descriptor *lbs_find_bssid_in_list(struct lbs_private *priv, - uint8_t *bssid, uint8_t mode) -{ - struct bss_descriptor *iter_bss; - struct bss_descriptor *found_bss = NULL; - - lbs_deb_enter(LBS_DEB_SCAN); - - if (!bssid) - goto out; - - lbs_deb_hex(LBS_DEB_SCAN, "looking for", bssid, ETH_ALEN); - - /* Look through the scan table for a compatible match. 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 - */ - mutex_lock(&priv->lock); - list_for_each_entry (iter_bss, &priv->network_list, list) { - if (compare_ether_addr(iter_bss->bssid, bssid)) - continue; /* bssid doesn't match */ - switch (mode) { - case IW_MODE_INFRA: - case IW_MODE_ADHOC: - if (!is_network_compatible(priv, iter_bss, mode)) - break; - found_bss = iter_bss; - break; - default: - found_bss = iter_bss; - break; - } - } - mutex_unlock(&priv->lock); - -out: - lbs_deb_leave_args(LBS_DEB_SCAN, "found_bss %p", found_bss); - return found_bss; -} - -/** - * @brief This function finds ssid in ssid list. - * - * Used in association code - * - * @param priv A pointer to struct lbs_private - * @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 - */ -struct bss_descriptor *lbs_find_ssid_in_list(struct lbs_private *priv, - uint8_t *ssid, uint8_t ssid_len, - uint8_t *bssid, uint8_t mode, - int channel) -{ - u32 bestrssi = 0; - struct bss_descriptor * iter_bss = NULL; - struct bss_descriptor * found_bss = NULL; - struct bss_descriptor * tmp_oldest = NULL; - - lbs_deb_enter(LBS_DEB_SCAN); - - mutex_lock(&priv->lock); - - list_for_each_entry (iter_bss, &priv->network_list, list) { - if ( !tmp_oldest - || (iter_bss->last_scanned < tmp_oldest->last_scanned)) - tmp_oldest = iter_bss; - - if (lbs_ssid_cmp(iter_bss->ssid, iter_bss->ssid_len, - ssid, ssid_len) != 0) - continue; /* ssid doesn't match */ - if (bssid && compare_ether_addr(iter_bss->bssid, bssid) != 0) - continue; /* bssid doesn't match */ - if ((channel > 0) && (iter_bss->channel != channel)) - continue; /* channel doesn't match */ - - switch (mode) { - case IW_MODE_INFRA: - case IW_MODE_ADHOC: - if (!is_network_compatible(priv, iter_bss, mode)) - break; - - if (bssid) { - /* Found requested BSSID */ - found_bss = iter_bss; - goto out; - } - - if (SCAN_RSSI(iter_bss->rssi) > bestrssi) { - bestrssi = SCAN_RSSI(iter_bss->rssi); - found_bss = iter_bss; - } - break; - case IW_MODE_AUTO: - default: - if (SCAN_RSSI(iter_bss->rssi) > bestrssi) { - bestrssi = SCAN_RSSI(iter_bss->rssi); - found_bss = iter_bss; - } - break; - } - } - -out: - mutex_unlock(&priv->lock); - lbs_deb_leave_args(LBS_DEB_SCAN, "found_bss %p", found_bss); - return found_bss; -} - -/** - * @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 priv A pointer to struct lbs_private - * - * @return index in BSSID list - */ -static struct bss_descriptor *lbs_find_best_ssid_in_list(struct lbs_private *priv, - uint8_t mode) -{ - uint8_t bestrssi = 0; - struct bss_descriptor *iter_bss; - struct bss_descriptor *best_bss = NULL; - - lbs_deb_enter(LBS_DEB_SCAN); - - mutex_lock(&priv->lock); - - list_for_each_entry (iter_bss, &priv->network_list, list) { - switch (mode) { - case IW_MODE_INFRA: - case IW_MODE_ADHOC: - if (!is_network_compatible(priv, iter_bss, mode)) - break; - if (SCAN_RSSI(iter_bss->rssi) <= bestrssi) - break; - bestrssi = SCAN_RSSI(iter_bss->rssi); - best_bss = iter_bss; - break; - case IW_MODE_AUTO: - default: - if (SCAN_RSSI(iter_bss->rssi) <= bestrssi) - break; - bestrssi = SCAN_RSSI(iter_bss->rssi); - best_bss = iter_bss; - break; - } - } - - mutex_unlock(&priv->lock); - lbs_deb_leave_args(LBS_DEB_SCAN, "best_bss %p", best_bss); - return best_bss; -} - -/** - * @brief Find the best AP - * - * Used from association worker. - * - * @param priv A pointer to struct lbs_private structure - * @param pSSID A pointer to AP's ssid - * - * @return 0--success, otherwise--fail - */ -int lbs_find_best_network_ssid(struct lbs_private *priv, uint8_t *out_ssid, - uint8_t *out_ssid_len, uint8_t preferred_mode, - uint8_t *out_mode) -{ - int ret = -1; - struct bss_descriptor *found; - - lbs_deb_enter(LBS_DEB_SCAN); - - priv->scan_ssid_len = 0; - lbs_scan_networks(priv, 1); - if (priv->surpriseremoved) - goto out; - - found = lbs_find_best_ssid_in_list(priv, preferred_mode); - if (found && (found->ssid_len > 0)) { - memcpy(out_ssid, &found->ssid, IW_ESSID_MAX_SIZE); - *out_ssid_len = found->ssid_len; - *out_mode = found->mode; - ret = 0; - } - -out: - lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); - return ret; -} - - -/** * @brief Send a scan command for all available channels filtered on a spec * * Used in association code and from debugfs diff --git a/drivers/net/wireless/libertas/scan.h b/drivers/net/wireless/libertas/scan.h index b50cf1415e04..9e07b0464a8e 100644 --- a/drivers/net/wireless/libertas/scan.h +++ b/drivers/net/wireless/libertas/scan.h @@ -7,73 +7,13 @@ #ifndef _LBS_SCAN_H #define _LBS_SCAN_H -#include <net/ieee80211.h> -#include "hostcmd.h" - /** * @brief Maximum number of channels that can be sent in a setuserscan ioctl */ #define LBS_IOCTL_USER_SCAN_CHAN_MAX 50 -//! Infrastructure BSS scan type in cmd_ds_802_11_scan -#define LBS_SCAN_BSS_TYPE_BSS 1 - -//! Adhoc BSS scan type in cmd_ds_802_11_scan -#define LBS_SCAN_BSS_TYPE_IBSS 2 - -//! Adhoc or Infrastructure BSS scan type in cmd_ds_802_11_scan, no filter -#define LBS_SCAN_BSS_TYPE_ANY 3 - -/** - * @brief Structure used to store information for each beacon/probe response - */ -struct bss_descriptor { - u8 bssid[ETH_ALEN]; - - u8 ssid[IW_ESSID_MAX_SIZE + 1]; - u8 ssid_len; - - u16 capability; - u32 rssi; - u32 channel; - u16 beaconperiod; - u32 atimwindow; - - /* IW_MODE_AUTO, IW_MODE_ADHOC, IW_MODE_INFRA */ - u8 mode; - - /* zero-terminated array of supported data rates */ - u8 rates[MAX_RATES + 1]; - - unsigned long last_scanned; - - union ieeetypes_phyparamset phyparamset; - union IEEEtypes_ssparamset ssparamset; - - struct ieeetypes_countryinfofullset countryinfo; - - u8 wpa_ie[MAX_WPA_IE_LEN]; - size_t wpa_ie_len; - u8 rsn_ie[MAX_WPA_IE_LEN]; - size_t rsn_ie_len; - - u8 mesh; - - struct list_head list; -}; - int lbs_ssid_cmp(u8 *ssid1, u8 ssid1_len, u8 *ssid2, u8 ssid2_len); -struct bss_descriptor *lbs_find_ssid_in_list(struct lbs_private *priv, - u8 *ssid, u8 ssid_len, u8 *bssid, u8 mode, - int channel); - -struct bss_descriptor *lbs_find_bssid_in_list(struct lbs_private *priv, - u8 *bssid, u8 mode); - -int lbs_find_best_network_ssid(struct lbs_private *priv, u8 *out_ssid, - u8 *out_ssid_len, u8 preferred_mode, u8 *out_mode); - int lbs_send_specific_ssid_scan(struct lbs_private *priv, u8 *ssid, u8 ssid_len); @@ -82,6 +22,8 @@ int lbs_get_scan(struct net_device *dev, struct iw_request_info *info, int lbs_set_scan(struct net_device *dev, struct iw_request_info *info, union iwreq_data *wrqu, char *extra); +int lbs_scan_networks(struct lbs_private *priv, int full_scan); + void lbs_scan_worker(struct work_struct *work); #endif diff --git a/drivers/net/wireless/libertas/wext.c b/drivers/net/wireless/libertas/wext.c index 375072130221..4ab5b8523ed9 100644 --- a/drivers/net/wireless/libertas/wext.c +++ b/drivers/net/wireless/libertas/wext.c @@ -17,6 +17,7 @@ #include "defs.h" #include "dev.h" #include "wext.h" +#include "scan.h" #include "assoc.h" #include "cmd.h" |