diff options
Diffstat (limited to 'drivers/net/wireless/libertas/scan.c')
| -rw-r--r-- | drivers/net/wireless/libertas/scan.c | 1225 |
1 files changed, 552 insertions, 673 deletions
diff --git a/drivers/net/wireless/libertas/scan.c b/drivers/net/wireless/libertas/scan.c index e009f9b..b2919a6 100644 --- a/drivers/net/wireless/libertas/scan.c +++ b/drivers/net/wireless/libertas/scan.c @@ -8,6 +8,7 @@ #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> @@ -58,12 +59,81 @@ //! 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 +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)); +} + +static inline int match_bss_no_security(struct wlan_802_11_security * secinfo, + struct bss_descriptor * match_bss) +{ + if ( !secinfo->wep_enabled + && !secinfo->WPAenabled + && !secinfo->WPA2enabled + && match_bss->wpa_ie[0] != WPA_IE + && match_bss->rsn_ie[0] != WPA2_IE + && !match_bss->privacy) { + return 1; + } + return 0; +} + +static inline int match_bss_static_wep(struct wlan_802_11_security * secinfo, + struct bss_descriptor * match_bss) +{ + if ( secinfo->wep_enabled + && !secinfo->WPAenabled + && !secinfo->WPA2enabled + && match_bss->privacy) { + return 1; + } + return 0; +} + +static inline int match_bss_wpa(struct wlan_802_11_security * secinfo, + struct bss_descriptor * match_bss) +{ + if ( !secinfo->wep_enabled + && secinfo->WPAenabled + && !secinfo->WPA2enabled + && (match_bss->wpa_ie[0] == WPA_IE) + /* privacy bit may NOT be set in some APs like LinkSys WRT54G + && bss->privacy */ + ) { + return 1; + } + return 0; +} + +static inline int match_bss_wpa2(struct wlan_802_11_security * secinfo, + struct bss_descriptor * match_bss) +{ + if ( !secinfo->wep_enabled + && !secinfo->WPAenabled + && secinfo->WPA2enabled + && (match_bss->rsn_ie[0] == WPA2_IE) + /* privacy bit may NOT be set in some APs like LinkSys WRT54G + && bss->privacy */ + ) { + return 1; + } + return 0; +} + +static inline int match_bss_dynamic_wep(struct wlan_802_11_security * secinfo, + struct bss_descriptor * match_bss) +{ + if ( !secinfo->wep_enabled + && !secinfo->WPAenabled + && !secinfo->WPA2enabled + && (match_bss->wpa_ie[0] != WPA_IE) + && (match_bss->rsn_ie[0] != WPA2_IE) + && match_bss->privacy) { + return 1; + } + return 0; +} /** * @brief Check if a scanned network compatible with the driver settings @@ -84,121 +154,63 @@ * * @return Index in scantable, or error code if negative */ -static int is_network_compatible(wlan_adapter * adapter, int index, u8 mode) +static int is_network_compatible(wlan_adapter * adapter, + struct bss_descriptor * bss, u8 mode) { + int matched = 0; + 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; - } + if (bss->mode != mode) + goto done; - /* 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], + if ((matched = match_bss_no_security(&adapter->secinfo, bss))) { + goto done; + } else if ((matched = match_bss_static_wep(&adapter->secinfo, bss))) { + goto done; + } else if ((matched = match_bss_wpa(&adapter->secinfo, bss))) { + lbs_deb_scan( + "is_network_compatible() WPA: wpa_ie=%#x " + "wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s " + "privacy=%#x\n", bss->wpa_ie[0], bss->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; + bss->privacy); + goto done; + } else if ((matched = match_bss_wpa2(&adapter->secinfo, bss))) { + lbs_deb_scan( + "is_network_compatible() WPA2: wpa_ie=%#x " + "wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s " + "privacy=%#x\n", bss->wpa_ie[0], bss->rsn_ie[0], + adapter->secinfo.wep_enabled ? "e" : "d", + adapter->secinfo.WPAenabled ? "e" : "d", + adapter->secinfo.WPA2enabled ? "e" : "d", + bss->privacy); + goto done; + } else if ((matched = match_bss_dynamic_wep(&adapter->secinfo, bss))) { + lbs_deb_scan( + "is_network_compatible() dynamic WEP: " + "wpa_ie=%#x wpa2_ie=%#x privacy=%#x\n", + bss->wpa_ie[0], + bss->rsn_ie[0], + bss->privacy); goto done; } - /* mode doesn't match */ - index = -ENETUNREACH; + /* bss security settings don't match those configured on card */ + lbs_deb_scan( + "is_network_compatible() FAILED: wpa_ie=%#x " + "wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s privacy=%#x\n", + bss->wpa_ie[0], bss->rsn_ie[0], + adapter->secinfo.wep_enabled ? "e" : "d", + adapter->secinfo.WPAenabled ? "e" : "d", + adapter->secinfo.WPA2enabled ? "e" : "d", + bss->privacy); done: - lbs_deb_leave_args(LBS_DEB_SCAN, "index %d", index); - return index; -} - -/** - * @brief This function validates a SSID as being able to be printed - * - * @param pssid SSID structure to validate - * - * @return TRUE or FALSE - */ -static u8 ssid_valid(struct WLAN_802_11_SSID *pssid) -{ - int ssididx; - - for (ssididx = 0; ssididx < pssid->ssidlength; ssididx++) { - if (!isprint(pssid->ssid[ssididx])) { - return 0; - } - } - - return 1; + lbs_deb_leave(LBS_DEB_SCAN); + return matched; } /** @@ -218,44 +230,35 @@ static u8 ssid_valid(struct WLAN_802_11_SSID *pssid) static void wlan_scan_process_results(wlan_private * priv) { wlan_adapter *adapter = priv->adapter; - int foundcurrent; - int i; - - 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].bssid, - ETH_ALEN)) { - foundcurrent = 1; - } - } + struct bss_descriptor * iter_bss; - if (foundcurrent) { - /* Make a copy of current BSSID descriptor */ - memcpy(&adapter->curbssparams.bssdescriptor, - &adapter->scantable[i], - sizeof(adapter->curbssparams.bssdescriptor)); - } + mutex_lock(&adapter->lock); + + if (adapter->connect_status != libertas_connected) + goto debug_print; + + /* try to find the current BSSID in the scan list */ + list_for_each_entry (iter_bss, &adapter->network_list, list) { + if (libertas_SSID_cmp(&iter_bss->ssid, &adapter->curbssparams.ssid)) + continue; + if (memcmp(adapter->curbssparams.bssid, iter_bss->bssid, ETH_ALEN)) + continue; + /* Make a copy of current BSSID descriptor */ + memcpy(&adapter->curbssparams.bssdescriptor, iter_bss, + sizeof(struct bss_descriptor)); + break; } - 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].bssid[0], - adapter->scantable[i].bssid[1], - adapter->scantable[i].bssid[2], - adapter->scantable[i].bssid[3], - adapter->scantable[i].bssid[4], - adapter->scantable[i].bssid[5], - (s32) adapter->scantable[i].rssi, - adapter->scantable[i].ssid.ssid); +debug_print: + list_for_each_entry (iter_bss, &adapter->network_list, list) { + lbs_deb_scan("Scan:(%02d) " MAC_FMT ", RSSI[%03d], SSID[%s]\n", + i++, + iter_bss->bssid[0], iter_bss->bssid[1], iter_bss->bssid[2], + iter_bss->bssid[3], iter_bss->bssid[4], iter_bss->bssid[5], + (s32) iter_bss->rssi, iter_bss->ssid.ssid); } + + mutex_unlock(&adapter->lock); } /** @@ -798,9 +801,17 @@ int wlan_scan_networks(wlan_private * priv, keeppreviousscan = 1; if (!keeppreviousscan) { - memset(adapter->scantable, 0x00, - sizeof(struct bss_descriptor) * MRVDRV_MAX_BSSID_LIST); - adapter->numinscantable = 0; + struct bss_descriptor * iter_bss; + struct bss_descriptor * safe; + + mutex_lock(&adapter->lock); + list_for_each_entry_safe (iter_bss, safe, + &adapter->network_list, list) { + list_move_tail (&iter_bss->list, + &adapter->network_free_list); + clear_bss_descriptor(iter_bss); + } + mutex_unlock(&adapter->lock); } /* Keep the data path active if we are only scanning our current channel */ @@ -903,12 +914,12 @@ void wlan_ret_802_11_scan_get_tlv_ptrs(struct mrvlietypes_data * ptlv, * 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 libertas_process_bss(struct bss_descriptor * bss, + u8 ** pbeaconinfo, int *bytesleft) { enum ieeetypes_elementid elemID; struct ieeetypes_fhparamset *pFH; @@ -963,17 +974,16 @@ static int InterpretBSSDescriptionWithIE(struct bss_descriptor * pBSSEntry, bytesleftforcurrentbeacon = beaconsize; - memcpy(pBSSEntry->bssid, pcurrentptr, ETH_ALEN); - lbs_deb_scan("InterpretIE: AP MAC Addr-%x:%x:%x:%x:%x:%x\n", - pBSSEntry->bssid[0], pBSSEntry->bssid[1], - pBSSEntry->bssid[2], pBSSEntry->bssid[3], - pBSSEntry->bssid[4], pBSSEntry->bssid[5]); + memcpy(bss->bssid, pcurrentptr, ETH_ALEN); + lbs_deb_scan("process_bss: AP BSSID " MAC_FMT "\n", + bss->bssid[0], bss->bssid[1], bss->bssid[2], + bss->bssid[3], bss->bssid[4], bss->bssid[5]); pcurrentptr += ETH_ALEN; bytesleftforcurrentbeacon -= ETH_ALEN; if (bytesleftforcurrentbeacon < 12) { - lbs_deb_scan("InterpretIE: Not enough bytes left\n"); + lbs_deb_scan("process_bss: Not enough bytes left\n"); return -1; } @@ -983,51 +993,51 @@ static int InterpretBSSDescriptionWithIE(struct bss_descriptor * pBSSEntry, */ /* RSSI is 1 byte long */ - pBSSEntry->rssi = le32_to_cpu((long)(*pcurrentptr)); - lbs_deb_scan("InterpretIE: RSSI=%02X\n", *pcurrentptr); + bss->rssi = le32_to_cpu((long)(*pcurrentptr)); + lbs_deb_scan("process_bss: RSSI=%02X\n", *pcurrentptr); pcurrentptr += 1; bytesleftforcurrentbeacon -= 1; /* time stamp is 8 bytes long */ memcpy(fixedie.timestamp, pcurrentptr, 8); - memcpy(pBSSEntry->timestamp, pcurrentptr, 8); + memcpy(bss->timestamp, pcurrentptr, 8); pcurrentptr += 8; bytesleftforcurrentbeacon -= 8; /* beacon interval is 2 bytes long */ memcpy(&fixedie.beaconinterval, pcurrentptr, 2); - pBSSEntry->beaconperiod = le16_to_cpu(fixedie.beaconinterval); + bss->beaconperiod = le16_to_cpu(fixedie.beaconinterval); pcurrentptr += 2; bytesleftforcurrentbeacon -= 2; /* capability information is 2 bytes long */ memcpy(&fixedie.capabilities, pcurrentptr, 2); - lbs_deb_scan("InterpretIE: fixedie.capabilities=0x%X\n", + lbs_deb_scan("process_bss: 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)); + memcpy(&bss->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", + lbs_deb_scan("process_bss: IE length for this AP = %d\n", bytesleftforcurrentbeacon); - lbs_dbg_hex("InterpretIE: IE info", (u8 *) pcurrentptr, + lbs_dbg_hex("process_bss: IE info", (u8 *) pcurrentptr, bytesleftforcurrentbeacon); if (pcap->privacy) { - lbs_deb_scan("InterpretIE: AP WEP enabled\n"); - pBSSEntry->privacy = wlan802_11privfilter8021xWEP; + lbs_deb_scan("process_bss: AP WEP enabled\n"); + bss->privacy = wlan802_11privfilter8021xWEP; } else { - pBSSEntry->privacy = wlan802_11privfilteracceptall; + bss->privacy = wlan802_11privfilteracceptall; } if (pcap->ibss == 1) { - pBSSEntry->mode = IW_MODE_ADHOC; + bss->mode = IW_MODE_ADHOC; } else { - pBSSEntry->mode = IW_MODE_INFRA; + bss->mode = IW_MODE_INFRA; } /* process variable IE */ @@ -1036,84 +1046,67 @@ static int InterpretBSSDescriptionWithIE(struct bss_descriptor * pBSSEntry, elemlen = *((u8 *) pcurrentptr + 1); if (bytesleftforcurrentbeacon < elemlen) { - lbs_deb_scan("InterpretIE: error in processing IE, " + lbs_deb_scan("process_bss: 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); + bss->ssid.ssidlength = elemlen; + memcpy(bss->ssid.ssid, (pcurrentptr + 2), elemlen); + lbs_deb_scan("ssid '%s'\n", bss->ssid.ssid); break; case SUPPORTED_RATES: - memcpy(pBSSEntry->datarates, (pcurrentptr + 2), - elemlen); - memmove(pBSSEntry->libertas_supported_rates, (pcurrentptr + 2), + memcpy(bss->datarates, (pcurrentptr + 2), elemlen); + memmove(bss->libertas_supported_rates, (pcurrentptr + 2), elemlen); ratesize = elemlen; founddatarateie = 1; break; case EXTRA_IE: - lbs_deb_scan("InterpretIE: EXTRA_IE Found!\n"); - pBSSEntry->extra_ie = 1; + lbs_deb_scan("process_bss: EXTRA_IE Found!\n"); break; case FH_PARAM_SET: pFH = (struct ieeetypes_fhparamset *) pcurrentptr; - memmove(&pBSSEntry->phyparamset.fhparamset, pFH, + memmove(&bss->phyparamset.fhparamset, pFH, sizeof(struct ieeetypes_fhparamset)); - pBSSEntry->phyparamset.fhparamset.dwelltime - = - le16_to_cpu(pBSSEntry->phyparamset.fhparamset. - dwelltime); + bss->phyparamset.fhparamset.dwelltime + = le16_to_cpu(bss->phyparamset.fhparamset.dwelltime); break; case DS_PARAM_SET: pDS = (struct ieeetypes_dsparamset *) pcurrentptr; - - pBSSEntry->channel = pDS->currentchan; - - memcpy(&pBSSEntry->phyparamset.dsparamset, pDS, + bss->channel = pDS->currentchan; + memcpy(&bss->phyparamset.dsparamset, pDS, sizeof(struct ieeetypes_dsparamset)); break; case CF_PARAM_SET: pCF = (struct ieeetypes_cfparamset *) pcurrentptr; - - memcpy(&pBSSEntry->ssparamset.cfparamset, pCF, + memcpy(&bss->ssparamset.cfparamset, pCF, sizeof(struct ieeetypes_cfparamset)); break; case IBSS_PARAM_SET: pibss = (struct ieeetypes_ibssparamset *) pcurrentptr; - pBSSEntry->atimwindow = - le32_to_cpu(pibss->atimwindow); - - memmove(&pBSSEntry->ssparamset.ibssparamset, pibss, + bss->atimwindow = le32_to_cpu(pibss->atimwindow); + memmove(&bss->ssparamset.ibssparamset, pibss, sizeof(struct ieeetypes_ibssparamset)); - - pBSSEntry->ssparamset.ibssparamset.atimwindow - = - le16_to_cpu(pBSSEntry->ssparamset.ibssparamset. - atimwindow); + bss->ssparamset.ibssparamset.atimwindow + = le16_to_cpu(bss->ssparamset.ibssparamset.atimwindow); break; /* Handle Country Info IE */ case COUNTRY_INFO: - pcountryinfo = - (struct ieeetypes_countryinfoset *) pcurrentptr; - - if (pcountryinfo->len < - sizeof(pcountryinfo->countrycode) + pcountryinfo = (struct ieeetypes_countryinfoset *) pcurrentptr; + if (pcountryinfo->len < sizeof(pcountryinfo->countrycode) || pcountryinfo->len > 254) { - lbs_deb_scan("InterpretIE: 11D- Err " + lbs_deb_scan("process_bss: 11D- Err " "CountryInfo len =%d min=%zd max=254\n", pcountryinfo->len, sizeof(pcountryinfo->countrycode)); @@ -1121,9 +1114,9 @@ static int InterpretBSSDescriptionWithIE(struct bss_descriptor * pBSSEntry, goto done; } - memcpy(&pBSSEntry->countryinfo, + memcpy(&bss->countryinfo, pcountryinfo, pcountryinfo->len + 2); - lbs_dbg_hex("InterpretIE: 11D- CountryInfo:", + lbs_dbg_hex("process_bss: 11D- CountryInfo:", (u8 *) pcountryinfo, (u32) (pcountryinfo->len + 2)); break; @@ -1143,12 +1136,10 @@ static int InterpretBSSDescriptionWithIE(struct bss_descriptor * pBSSEntry, bytestocopy = elemlen; } - pRate = (u8 *) pBSSEntry->datarates; + pRate = (u8 *) bss->datarates; pRate += ratesize; memmove(pRate, (pcurrentptr + 2), bytestocopy); - - pRate = (u8 *) pBSSEntry->libertas_supported_rates; - + pRate = (u8 *) bss->libertas_supported_rates; pRate += ratesize; memmove(pRate, (pcurrentptr + 2), bytestocopy); } @@ -1161,24 +1152,17 @@ static int InterpretBSSDescriptionWithIE(struct bss_descriptor * pBSSEntry, if (memcmp(pIe->oui, oui01, sizeof(oui01))) break; - 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); + bss->wpa_ie_len = min(elemlen + IE_ID_LEN_FIELDS_BYTES, + MAX_WPA_IE_LEN); + memcpy(bss->wpa_ie, pcurrentptr, bss->wpa_ie_len); + lbs_dbg_hex("process_bss: WPA IE", bss->wpa_ie, elemlen); 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); + bss->rsn_ie_len = min(elemlen + IE_ID_LEN_FIELDS_BYTES, + MAX_WPA_IE_LEN); + memcpy(bss->rsn_ie, pcurrentptr, bss->rsn_ie_len); + lbs_dbg_hex("process_bss: RSN_IE", bss->rsn_ie, elemlen); break; case TIM: break; @@ -1193,6 +1177,10 @@ static int InterpretBSSDescriptionWithIE(struct bss_descriptor * pBSSEntry, bytesleftforcurrentbeacon -= (elemlen + 2); } /* while (bytesleftforcurrentbeacon > 2) */ + + /* Timestamp */ + bss->last_scanned = jiffies; + ret = 0; done: @@ -1228,38 +1216,41 @@ int libertas_SSID_cmp(struct WLAN_802_11_SSID *ssid1, struct WLAN_802_11_SSID *s * * @return index in BSSID list, or error return code (< 0) */ -int libertas_find_BSSID_in_list(wlan_adapter * adapter, u8 * bssid, u8 mode) +struct bss_descriptor * libertas_find_BSSID_in_list(wlan_adapter * adapter, + u8 * bssid, u8 mode) { - int ret = -ENETUNREACH; - int i; + struct bss_descriptor * iter_bss; + struct bss_descriptor * found_bss = NULL; if (!bssid) - return -EFAULT; + return NULL; - lbs_deb_scan("FindBSSID: Num of BSSIDs = %d\n", - adapter->numinscantable); + lbs_dbg_hex("libertas_find_BSSID_in_list: looking for ", + bssid, ETH_ALEN); - /* 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 + /* 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 */ - for (i = 0; ret < 0 && i < adapter->numinscantable; i++) { - if (!memcmp(adapter->scantable[i].bssid, bssid, ETH_ALEN)) { - switch (mode) { - case IW_MODE_INFRA: - case IW_MODE_ADHOC: - ret = is_network_compatible(adapter, i, mode); - break; - default: - ret = i; + mutex_lock(&adapter->lock); + list_for_each_entry (iter_bss, &adapter->network_list, list) { + if (memcmp(iter_bss->bssid, bssid, ETH_ALEN)) + continue; /* bssid doesn't match */ + switch (mode) { + case IW_MODE_INFRA: + case IW_MODE_ADHOC: + if (!is_network_compatible(adapter, iter_bss, mode)) break; - } + found_bss = iter_bss; + break; + default: + found_bss = iter_bss; + break; } } + mutex_unlock(&adapter->lock); - return ret; + return found_bss; } /** @@ -1272,60 +1263,56 @@ int libertas_find_BSSID_in_list(wlan_adapter * adapter, u8 * bssid, u8 mode) * * @return index in BSSID list */ -int libertas_find_SSID_in_list(wlan_adapter * adapter, +struct bss_descriptor * 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; + struct bss_descriptor * iter_bss = NULL; + struct bss_descriptor * found_bss = NULL; + struct bss_descriptor * tmp_oldest = NULL; - 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].bssid, 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; - } + mutex_lock(&adapter->lock); + + list_for_each_entry (iter_bss, &adapter->network_list, list) { + if ( !tmp_oldest + || (iter_bss->last_scanned < tmp_oldest->last_scanned)) + tmp_oldest = iter_bss; + + if (libertas_SSID_cmp(&iter_bss->ssid, ssid) != 0) + continue; /* ssid doesn't match */ + if (bssid && memcmp(iter_bss->bssid, bssid, ETH_ALEN) != 0) + continue; /* bssid doesn't match */ + + switch (mode) { + case IW_MODE_INFRA: + case IW_MODE_ADHOC: + if (!is_network_compatible(adapter, 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; } } - return net; +out: + mutex_unlock(&adapter->lock); + return found_bss; } /** @@ -1338,43 +1325,38 @@ int libertas_find_SSID_in_list(wlan_adapter * adapter, * * @return index in BSSID list */ -int libertas_find_best_SSID_in_list(wlan_adapter * adapter, u8 mode) +struct bss_descriptor * libertas_find_best_SSID_in_list(wlan_adapter * adapter, + u8 mode) { - int bestnet = -ENETUNREACH; u8 bestrssi = 0; - int i; - - lbs_deb_enter(LBS_DEB_ASSOC); + struct bss_descriptor * iter_bss; + struct bss_descriptor * best_bss = NULL; - lbs_deb_scan("Num of BSSIDs = %d\n", adapter->numinscantable); + mutex_lock(&adapter->lock); - for (i = 0; i < adapter->numinscantable; i++) { + list_for_each_entry (iter_bss, &adapter->network_list, list) { 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; - } - } + if (!is_network_compatible(adapter, 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(adapter->scantable[i].rssi) > bestrssi) { - bestrssi = - SCAN_RSSI(adapter->scantable[i].rssi); - bestnet = i; - } + if (SCAN_RSSI(iter_bss->rssi) <= bestrssi) + break; + bestrssi = SCAN_RSSI(iter_bss->rssi); + best_bss = iter_bss; break; } } - lbs_deb_leave_args(LBS_DEB_SCAN, "bestnet %d", bestnet); - return bestnet; + mutex_unlock(&adapter->lock); + return best_bss; } /** @@ -1386,39 +1368,30 @@ int libertas_find_best_SSID_in_list(wlan_adapter * adapter, u8 mode) * @return 0--success, otherwise--fail */ int libertas_find_best_network_SSID(wlan_private * priv, - struct WLAN_802_11_SSID *pSSID, + struct WLAN_802_11_SSID *ssid, u8 preferred_mode, u8 *out_mode) { wlan_adapter *adapter = priv->adapter; - int ret = 0; - struct bss_descriptor *preqbssid; - int i; + int ret = -1; + struct bss_descriptor * found; lbs_deb_enter(LBS_DEB_ASSOC); - memset(pSSID, 0, sizeof(struct WLAN_802_11_SSID)); + memset(ssid, 0, sizeof(struct WLAN_802_11_SSID)); wlan_scan_networks(priv, NULL, 1); if (adapter->surpriseremoved) return -1; - wait_event_interruptible(adapter->cmd_pending, !adapter->nr_cmd_pending); - - i = libertas_find_best_SSID_in_list(adapter, preferred_mode); - if (i < 0) { - ret = -1; - goto out; - } - preqbssid = &adapter->scantable[i]; - memcpy(pSSID, &preqbssid->ssid, - sizeof(struct WLAN_802_11_SSID)); - *out_mode = preqbssid->mode; + wait_event_interruptible(adapter->cmd_pending, !adapter->nr_cmd_pending); - if (!pSSID->ssidlength) { - ret = -1; + found = libertas_find_best_SSID_in_list(adapter, preferred_mode); + if (found && (found->ssid.ssidlength > 0)) { + memcpy(ssid, &found->ssid, sizeof(struct WLAN_802_11_SSID)); + *out_mode = found->mode; + ret = 0; } -out: lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); return ret; } @@ -1520,285 +1493,206 @@ int libertas_send_specific_BSSID_scan(wlan_private * priv, u8 * bssid, u8 keeppr return 0; } -/** - * @brief Retrieve the scan table entries via wireless tools IOCTL call - * - * @param dev A pointer to net_device structure - * @param info A pointer to iw_request_info structure - * @param dwrq A pointer to iw_point structure - * @param extra A pointer to extra data buf - * - * @return 0 --success, otherwise fail - */ -int libertas_get_scan(struct net_device *dev, struct iw_request_info *info, - struct iw_point *dwrq, char *extra) +static inline char *libertas_translate_scan(wlan_private *priv, + char *start, char *stop, + struct bss_descriptor *bss) { - 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; + int ret; #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) - return -EAGAIN; - - if (adapter->last_scanned_channel) { - wlan_scan_networks(priv, NULL, 0); - return -EAGAIN; + cfp = libertas_find_cfp_by_band_and_channel(adapter, 0, bss->channel); + if (!cfp) { + lbs_deb_scan("Invalid channel number %d\n", bss->channel); + return NULL; } - if (adapter->connect_status == libertas_connected) - lbs_deb_scan("current ssid '%s'\n", - adapter->curbssparams.ssid.ssid); - - 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); - 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); - continue; - } - - if (!ssid_valid(&adapter->scantable[i].ssid)) { - continue; + /* First entry *MUST* be the AP 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(start, stop, &iwe, IW_EV_ADDR_LEN); + + /* SSID */ + iwe.cmd = SIOCGIWESSID; + iwe.u.data.flags = 1; + iwe.u.data.length = min(bss->ssid.ssidlength, (u32) IW_ESSID_MAX_SIZE); + start = iwe_stream_add_point(start, stop, &iwe, bss->ssid.ssid); + + /* Mode */ + iwe.cmd = SIOCGIWMODE; + iwe.u.mode = bss->mode; + start = iwe_stream_add_event(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(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 (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_AUTO) && + !libertas_SSID_cmp(&adapter->curbssparams.ssid, &bss->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); } + } + start = iwe_stream_add_event(start, stop, &iwe, IW_EV_QUAL_LEN); - /* 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].bssid, ETH_ALEN); + /* Add encryption capability */ + iwe.cmd = SIOCGIWENCODE; + if (bss->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(start, stop, &iwe, bss->ssid.ssid); - iwe.len = IW_EV_ADDR_LEN; - current_ev = - iwe_stream_add_event(current_ev, end_buf, &iwe, iwe.len); + current_val = start + IW_EV_LCP_LEN; - //Add the ESSID - iwe.u.data.length = adapter->scantable[i].ssid.ssidlength; + iwe.cmd = SIOCGIWRATE; + iwe.u.bitrate.fixed = 0; + iwe.u.bitrate.disabled = 0; + iwe.u.bitrate.value = 0; - if (iwe.u.data.length > 32) { - iwe.u.data.length = 32; - } + for (j = 0; j < sizeof(bss->libertas_supported_rates); j++) { + u8 rate = bss->libertas_supported_rates[j]; + if (rate == 0) + break; /* no more rates */ + /* Bit rate given in 500 kb/s units (+ 0x80) */ + iwe.u.bitrate.value = (rate & 0x7f) * 500000; + current_val = iwe_stream_add_value(start, current_val, + stop, &iwe, IW_EV_PARAM_LEN); + } + if ((bss->mode == IW_MODE_ADHOC) + && !libertas_SSID_cmp(&adapter->curbssparams.ssid, &bss->ssid) + && adapter->adhoccreate) { + iwe.u.bitrate.value = 22 * 500000; + current_val = iwe_stream_add_value(start, current_val, + stop, &iwe, IW_EV_PARAM_LEN); + } + /* Check if we added any event */ + if((current_val - start) > IW_EV_LCP_LEN) + 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(start, stop, &iwe, buf); + } - 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); + 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(start, stop, &iwe, buf); + } - current_val = current_ev + IW_EV_LCP_LEN; + return start; +} - iwe.cmd = SIOCGIWRATE; +/** + * @brief Retrieve the scan table entries via wireless tools IOCTL call + * + * @param dev A pointer to net_device structure + * @param info A pointer to iw_request_info structure + * @param dwrq A pointer to iw_point structure + * @param extra A pointer to extra data buf + * + * @return 0 --success, otherwise fail + */ +int libertas_get_scan(struct net_device *dev, struct iw_request_info *info, + struct iw_point *dwrq, char *extra) +{ +#define SCAN_ITEM_SIZE 128 + wlan_private *priv = dev->priv; + wlan_adapter *adapter = priv->adapter; + int err = 0; + char *ev = extra; + char *stop = ev + dwrq->length; + struct bss_descriptor * iter_bss; + struct bss_descriptor * safe; - iwe.u.bitrate.fixed = 0; - iwe.u.bitrate.disabled = 0; - iwe.u.bitrate.value = 0; + lbs_deb_enter(LBS_DEB_ASSOC); - /* 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; - } + /* If we've got an uncompleted scan, schedule the next part */ + if (!adapter->nr_cmd_pending && adapter->last_scanned_channel) + wlan_scan_networks(priv, NULL, 0); - 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); + mutex_lock(&adapter->lock); + list_for_each_entry_safe (iter_bss, safe, &adapter->network_list, list) { + char * next_ev; + unsigned long stale_time; + if (stop - ev < SCAN_ITEM_SIZE) { + err = -E2BIG; + break; } - 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); + /* 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, + &adapter->network_free_list); + clear_bss_descriptor(iter_bss); + continue; } - 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 = libertas_translate_scan(priv, ev, stop, iter_bss); + if (next_ev == NULL) + continue; + ev = next_ev; } + mutex_unlock(&adapter->lock); - dwrq->length = (current_ev - extra); + dwrq->length = (ev - extra); dwrq->flags = 0; lbs_deb_leave(LBS_DEB_ASSOC); - return 0; + return err; } /** @@ -1850,6 +1744,18 @@ int libertas_cmd_80211_scan(wlan_private * priv, return 0; } +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.ssidlength == dst->ssid.ssidlength) && + (src->channel == dst->channel) && + !compare_ether_addr(src->bssid, dst->bssid) && + !memcmp(src->ssid.ssid, dst->ssid.ssid, src->ssid.ssidlength)); +} + /** * @brief This function handles the command response of scan * @@ -1878,14 +1784,13 @@ int libertas_ret_80211_scan(wlan_private * priv, struct cmd_ds_command *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; + struct bss_descriptor * iter_bss; + struct bss_descriptor * safe; u8 *pbssinfo; u16 scanrespsize; int bytesleft; - int numintable; - int bssIdx; int idx; int tlvbufsize; u64 tsfval; @@ -1893,12 +1798,21 @@ int libertas_ret_80211_scan(wlan_private * priv, struct cmd_ds_command *resp) lbs_deb_enter(LBS_DEB_ASSOC); + /* Prune old entries from scan table */ + list_for_each_entry_safe (iter_bss, safe, &adapter->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, &adapter->network_free_list); + clear_bss_descriptor(iter_bss); + } + pscan = &resp->params.scanresp; - if (pscan->nr_sets > MRVDRV_MAX_BSSID_LIST) { - lbs_deb_scan( - "SCAN_RESP: Invalid number of AP returned (%d)!!\n", - pscan->nr_sets); + if (pscan->nr_sets > MAX_NETWORK_COUNT) { + lbs_deb_scan( + "SCAN_RESP: too many scan results (%d, max %d)!!\n", + pscan->nr_sets, MAX_NETWORK_COUNT); ret = -1; goto done; } @@ -1910,7 +1824,6 @@ int libertas_ret_80211_scan(wlan_private * priv, struct cmd_ds_command *resp) lbs_deb_scan("SCAN_RESP: returned %d AP before parsing\n", pscan->nr_sets); - numintable = adapter->numinscantable; pbssinfo = pscan->bssdesc_and_tlvbuffer; /* The size of the TLV buffer is equal to the entire command response @@ -1934,102 +1847,68 @@ int libertas_ret_80211_scan(wlan_private * priv, struct cmd_ds_command *resp) * 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)); + struct bss_descriptor new; + struct bss_descriptor * found = NULL; + struct bss_descriptor * iter_bss = 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.bssid[0], - newbssentry.bssid[1], - newbssentry.bssid[2], - newbssentry.bssid[3], - newbssentry.bssid[4], - newbssentry.bssid[5]); - - /* - * Search the scan table for the same bssid - */ - for (bssIdx = 0; bssIdx < numintable; bssIdx++) { - if (memcmp(newbssentry.bssid, - adapter->scantable[bssIdx].bssid, - sizeof(newbssentry.bssid)) == 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 (libertas_process_bss(&new, &pbssinfo, &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, &adapter->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(&adapter->network_free_list)) { + /* Pull one from the free list */ + found = list_entry(adapter->network_free_list.next, + struct bss_descriptor, list); + list_move_tail(&found->list, &adapter->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, &adapter->network_list); } else { + continue; + } - /* error parsing/interpreting the scan response, skipped */ - lbs_deb_scan("SCAN_RESP: " - "InterpretBSSDescriptionWithIE returned ERROR\n"); + lbs_deb_scan("SCAN_RESP: BSSID = " MAC_FMT "\n", + new.bssid[0], new.bssid[1], new.bssid[2], + new.bssid[3], new.bssid[4], new.bssid[5]); + + /* + * 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); + memcpy(&new.networktsf, &tsfval, sizeof(new.networktsf)); } - } - lbs_deb_scan("SCAN_RESP: Scanned %2d APs, %d valid, %d total\n", - pscan->nr_sets, numintable - adapter->numinscantable, - numintable); + /* 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: |