diff options
Diffstat (limited to 'drivers/net/wireless/libertas/scan.c')
| -rw-r--r-- | drivers/net/wireless/libertas/scan.c | 1529 |
1 files changed, 721 insertions, 808 deletions
diff --git a/drivers/net/wireless/libertas/scan.c b/drivers/net/wireless/libertas/scan.c index 3c0b1a2a172..606af50fa09 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 +59,82 @@ //! 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 const u8 zeromac[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; +static const u8 bcastmac[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; + +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 + && (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->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 @@ -84,123 +155,63 @@ * * @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) { - ENTER(); - - 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 */ - LEAVE(); - return index; - } else if ( adapter->secinfo.wep_enabled - && !adapter->secinfo.WPAenabled - && !adapter->secinfo.WPA2enabled - && adapter->scantable[index].privacy) { - /* static WEP enabled */ - LEAVE(); - return index; - } 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_pr_debug(1, - "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); - LEAVE(); - return index; - } 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_pr_debug(1, - "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); - LEAVE(); - return index; - } 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_pr_debug(1, - "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); - LEAVE(); - return index; - } - - /* security doesn't match */ - lbs_pr_debug(1, - "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], + int matched = 0; + + lbs_deb_enter(LBS_DEB_ASSOC); + + if (bss->mode != mode) + goto done; + + 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); - LEAVE(); - return -ECONNREFUSED; - } - - /* mode doesn't match */ - LEAVE(); - return -ENETUNREACH; -} - -/** - * @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; - } + 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; } - return 1; + /* 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(LBS_DEB_SCAN); + return matched; } /** @@ -220,44 +231,19 @@ 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].macaddress, - ETH_ALEN)) { - foundcurrent = 1; - } - } + struct bss_descriptor * iter_bss; + int i = 0; - if (foundcurrent) { - /* Make a copy of current BSSID descriptor */ - memcpy(&adapter->curbssparams.bssdescriptor, - &adapter->scantable[i], - sizeof(adapter->curbssparams.bssdescriptor)); - } - } + if (adapter->connect_status == libertas_connected) + return; - for (i = 0; i < adapter->numinscantable; i++) { - lbs_pr_debug(1, "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); + mutex_lock(&adapter->lock); + list_for_each_entry (iter_bss, &adapter->network_list, list) { + lbs_deb_scan("Scan:(%02d) " MAC_FMT ", RSSI[%03d], SSID[%s]\n", + i++, MAC_ARG(iter_bss->bssid), (s32) iter_bss->rssi, + escape_essid(iter_bss->ssid, iter_bss->ssid_len)); } + mutex_unlock(&adapter->lock); } /** @@ -338,14 +324,12 @@ static void wlan_scan_create_channel_list(wlan_private * priv, if (scantype == cmd_scan_type_passive) { scanchanlist[chanidx].maxscantime = - cpu_to_le16 - (MRVDRV_PASSIVE_SCAN_CHAN_TIME); + cpu_to_le16(MRVDRV_PASSIVE_SCAN_CHAN_TIME); scanchanlist[chanidx].chanscanmode.passivescan = 1; } else { scanchanlist[chanidx].maxscantime = - cpu_to_le16 - (MRVDRV_ACTIVE_SCAN_CHAN_TIME); + cpu_to_le16(MRVDRV_ACTIVE_SCAN_CHAN_TIME); scanchanlist[chanidx].chanscanmode.passivescan = 0; } @@ -408,13 +392,11 @@ wlan_scan_setup_scan_config(wlan_private * priv, u8 * pscancurrentonly) { 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; @@ -471,21 +453,18 @@ wlan_scan_setup_scan_config(wlan_private * priv, * 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); + memcpy(pscancfgout->bssid, puserscanin->bssid, + sizeof(pscancfgout->bssid)); - if (ssidlen) { + if (puserscanin->ssid_len) { 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; + pssidtlv->header.len = cpu_to_le16(puserscanin->ssid_len); + memcpy(pssidtlv->ssid, puserscanin->ssid, + puserscanin->ssid_len); + ptlvpos += sizeof(pssidtlv->header) + puserscanin->ssid_len; } /* @@ -494,8 +473,8 @@ wlan_scan_setup_scan_config(wlan_private * priv, * 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)) { + if ( puserscanin->ssid_len + || (compare_ether_addr(pscancfgout->bssid, &zeromac[0]) != 0)) { *pmaxchanperscan = MRVDRV_MAX_CHANNELS_PER_SCAN; *pfilteredscan = 1; } @@ -507,16 +486,11 @@ wlan_scan_setup_scan_config(wlan_private * priv, /* 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->header.type = cpu_to_le16(TLV_TYPE_NUMPROBES); + pnumprobestlv->header.len = cpu_to_le16(2); pnumprobestlv->numprobes = cpu_to_le16(numprobes); - ptlvpos += - sizeof(pnumprobestlv->header) + pnumprobestlv->header.len; - - pnumprobestlv->header.len = - cpu_to_le16(pnumprobestlv->header.len); + ptlvpos += sizeof(*pnumprobestlv); } /* @@ -529,7 +503,7 @@ wlan_scan_setup_scan_config(wlan_private * priv, if (puserscanin && puserscanin->chanlist[0].channumber) { - lbs_pr_debug(1, "Scan: Using supplied channel list\n"); + lbs_deb_scan("Scan: Using supplied channel list\n"); for (chanidx = 0; chanidx < WLAN_IOCTL_USER_SCAN_CHAN_MAX @@ -573,11 +547,11 @@ wlan_scan_setup_scan_config(wlan_private * priv, == priv->adapter->curbssparams.channel)) { *pscancurrentonly = 1; - lbs_pr_debug(1, "Scan: Scanning current channel only"); + lbs_deb_scan("Scan: Scanning current channel only"); } } else { - lbs_pr_debug(1, "Scan: Creating full region channel list\n"); + lbs_deb_scan("Scan: Creating full region channel list\n"); wlan_scan_create_channel_list(priv, pscanchanlist, *pfilteredscan); } @@ -613,7 +587,9 @@ static int wlan_scan_channel_list(wlan_private * priv, u8 filteredscan, struct wlan_scan_cmd_config * pscancfgout, struct mrvlietypes_chanlistparamset * pchantlvout, - struct chanscanparamset * pscanchanlist) + struct chanscanparamset * pscanchanlist, + const struct wlan_ioctl_user_scan_cfg * puserscanin, + int full_scan) { struct chanscanparamset *ptmpchan; struct chanscanparamset *pstartchan; @@ -621,11 +597,13 @@ static int wlan_scan_channel_list(wlan_private * priv, int doneearly; int tlvidx; int ret = 0; + int scanned = 0; + union iwreq_data wrqu; - ENTER(); + lbs_deb_enter(LBS_DEB_ASSOC); if (pscancfgout == 0 || pchantlvout == 0 || pscanchanlist == 0) { - lbs_pr_debug(1, "Scan: Null detect: %p, %p, %p\n", + lbs_deb_scan("Scan: Null detect: %p, %p, %p\n", pscancfgout, pchantlvout, pscanchanlist); return -1; } @@ -635,6 +613,9 @@ static int wlan_scan_channel_list(wlan_private * priv, /* 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) @@ -654,9 +635,9 @@ static int wlan_scan_channel_list(wlan_private * priv, * - doneearly is set (controlling individual scanning of 1,6,11) */ while (tlvidx < maxchanperscan && ptmpchan->channumber - && !doneearly) { + && !doneearly && scanned < 2) { - lbs_pr_debug(1, + lbs_deb_scan( "Scan: Chan(%3d), Radio(%d), mode(%d,%d), Dur(%d)\n", ptmpchan->channumber, ptmpchan->radiotype, ptmpchan->chanscanmode.passivescan, @@ -668,8 +649,11 @@ static int wlan_scan_channel_list(wlan_private * priv, ptmpchan, sizeof(pchantlvout->chanscanparam)); /* Increment the TLV header length by the size appended */ - pchantlvout->header.len += - sizeof(pchantlvout->chanscanparam); + /* Ew, it would be _so_ nice if we could just declare the + variable little-endian and let GCC handle it for us */ + pchantlvout->header.len = + cpu_to_le16(le16_to_cpu(pchantlvout->header.len) + + sizeof(pchantlvout->chanscanparam)); /* * The tlv buffer length is set to the number of bytes of the @@ -683,7 +667,7 @@ static int wlan_scan_channel_list(wlan_private * priv, /* Add the size of the channel tlv header and the data length */ pscancfgout->tlvbufferlen += (sizeof(pchantlvout->header) - + pchantlvout->header.len); + + le16_to_cpu(pchantlvout->header.len)); /* Increment the index to the channel tlv we are constructing */ tlvidx++; @@ -701,6 +685,7 @@ static int wlan_scan_channel_list(wlan_private * priv, /* 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 @@ -716,12 +701,71 @@ static int wlan_scan_channel_list(wlan_private * priv, /* 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) { + ret = 0; + goto done; + } + scanned = 0; } - LEAVE(); +done: + priv->adapter->last_scanned_channel = ptmpchan->channumber; + + /* Tell userspace the scan table has been updated */ + memset(&wrqu, 0, sizeof(union iwreq_data)); + wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL); + + lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); return ret; } +static void +clear_selected_scan_list_entries(wlan_adapter * adapter, + const struct wlan_ioctl_user_scan_cfg * scan_cfg) +{ + struct bss_descriptor * bss; + struct bss_descriptor * safe; + u32 clear_ssid_flag = 0, clear_bssid_flag = 0; + + if (!scan_cfg) + return; + + if (scan_cfg->clear_ssid && scan_cfg->ssid_len) + clear_ssid_flag = 1; + + if (scan_cfg->clear_bssid + && (compare_ether_addr(scan_cfg->bssid, &zeromac[0]) != 0) + && (compare_ether_addr(scan_cfg->bssid, &bcastmac[0]) != 0)) { + clear_bssid_flag = 1; + } + + if (!clear_ssid_flag && !clear_bssid_flag) + return; + + mutex_lock(&adapter->lock); + list_for_each_entry_safe (bss, safe, &adapter->network_list, list) { + u32 clear = 0; + + /* Check for an SSID match */ + if ( clear_ssid_flag + && (bss->ssid_len == scan_cfg->ssid_len) + && !memcmp(bss->ssid, scan_cfg->ssid, bss->ssid_len)) + clear = 1; + + /* Check for a BSSID match */ + if ( clear_bssid_flag + && !compare_ether_addr(bss->bssid, scan_cfg->bssid)) + clear = 1; + + if (clear) { + list_move_tail (&bss->list, &adapter->network_free_list); + clear_bss_descriptor(bss); + } + } + mutex_unlock(&adapter->lock); +} + + /** * @brief Internal function used to start a scan based on an input config * @@ -736,19 +780,19 @@ static int wlan_scan_channel_list(wlan_private * priv, * @return 0 or < 0 if error */ int wlan_scan_networks(wlan_private * priv, - const struct wlan_ioctl_user_scan_cfg * puserscanin) + const struct wlan_ioctl_user_scan_cfg * puserscanin, + int full_scan) { - wlan_adapter *adapter = priv->adapter; + 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; - ENTER(); + lbs_deb_enter(LBS_DEB_ASSOC); scan_chan_list = kzalloc(sizeof(struct chanscanparamset) * WLAN_IOCTL_USER_SCAN_CHAN_MAX, GFP_KERNEL); @@ -769,22 +813,14 @@ int wlan_scan_networks(wlan_private * priv, goto out; } - keeppreviousscan = 0; - - if (puserscanin) { - keeppreviousscan = puserscanin->keeppreviousscan; - } - - if (!keeppreviousscan) { - memset(adapter->scantable, 0x00, - sizeof(struct bss_descriptor) * MRVDRV_MAX_BSSID_LIST); - adapter->numinscantable = 0; - } + clear_selected_scan_list_entries(adapter, puserscanin); /* 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); + netif_stop_queue(priv->dev); + netif_carrier_off(priv->dev); + netif_stop_queue(priv->mesh_dev); + netif_carrier_off(priv->mesh_dev); } ret = wlan_scan_channel_list(priv, @@ -792,7 +828,9 @@ int wlan_scan_networks(wlan_private * priv, filteredscan, scan_cfg, pchantlvout, - scan_chan_list); + scan_chan_list, + puserscanin, + full_scan); /* Process the resulting scan table: * - Remove any bad ssids @@ -801,8 +839,10 @@ int wlan_scan_networks(wlan_private * priv, 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); + netif_carrier_on(priv->dev); + netif_wake_queue(priv->dev); + netif_carrier_on(priv->mesh_dev); + netif_wake_queue(priv->mesh_dev); } out: @@ -812,7 +852,7 @@ out: if (scan_chan_list) kfree(scan_chan_list); - LEAVE(); + lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); return ret; } @@ -843,7 +883,7 @@ void wlan_ret_802_11_scan_get_tlv_ptrs(struct mrvlietypes_data * ptlv, tlvbufleft = tlvbufsize; *ptsftlv = NULL; - lbs_pr_debug(1, "SCAN_RESP: tlvbufsize = %d\n", tlvbufsize); + lbs_deb_scan("SCAN_RESP: tlvbufsize = %d\n", tlvbufsize); lbs_dbg_hex("SCAN_RESP: TLV Buf", (u8 *) ptlv, tlvbufsize); while (tlvbufleft >= sizeof(struct mrvlietypesheader)) { @@ -856,7 +896,7 @@ void wlan_ret_802_11_scan_get_tlv_ptrs(struct mrvlietypes_data * ptlv, break; default: - lbs_pr_debug(1, "SCAN_RESP: Unhandled TLV = %d\n", + lbs_deb_scan("SCAN_RESP: Unhandled TLV = %d\n", tlvtype); /* Give up, this seems corrupted */ return; @@ -875,12 +915,12 @@ 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; @@ -897,13 +937,14 @@ static int InterpretBSSDescriptionWithIE(struct bss_descriptor * pBSSEntry, u16 beaconsize; u8 founddatarateie; int bytesleftforcurrentbeacon; + int ret; struct IE_WPA *pIe; const u8 oui01[4] = { 0x00, 0x50, 0xf2, 0x01 }; struct ieeetypes_countryinfoset *pcountryinfo; - ENTER(); + lbs_deb_enter(LBS_DEB_ASSOC); founddatarateie = 0; ratesize = 0; @@ -911,8 +952,7 @@ static int InterpretBSSDescriptionWithIE(struct bss_descriptor * pBSSEntry, if (*bytesleft >= sizeof(beaconsize)) { /* Extract & convert beacon size from the command buffer */ - memcpy(&beaconsize, *pbeaconinfo, sizeof(beaconsize)); - beaconsize = le16_to_cpu(beaconsize); + beaconsize = le16_to_cpup((void *)*pbeaconinfo); *bytesleft -= sizeof(beaconsize); *pbeaconinfo += sizeof(beaconsize); } @@ -934,17 +974,14 @@ static int InterpretBSSDescriptionWithIE(struct bss_descriptor * pBSSEntry, bytesleftforcurrentbeacon = beaconsize; - memcpy(pBSSEntry->macaddress, pcurrentptr, ETH_ALEN); - lbs_pr_debug(1, "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, pcurrentptr, ETH_ALEN); + lbs_deb_scan("process_bss: AP BSSID " MAC_FMT "\n", MAC_ARG(bss->bssid)); pcurrentptr += ETH_ALEN; bytesleftforcurrentbeacon -= ETH_ALEN; if (bytesleftforcurrentbeacon < 12) { - lbs_pr_debug(1, "InterpretIE: Not enough bytes left\n"); + lbs_deb_scan("process_bss: Not enough bytes left\n"); return -1; } @@ -954,51 +991,48 @@ static int InterpretBSSDescriptionWithIE(struct bss_descriptor * pBSSEntry, */ /* RSSI is 1 byte long */ - pBSSEntry->rssi = le32_to_cpu((long)(*pcurrentptr)); - lbs_pr_debug(1, "InterpretIE: RSSI=%02X\n", *pcurrentptr); + bss->rssi = *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); + fixedie.timestamp = bss->timestamp = le64_to_cpup((void *)pcurrentptr); pcurrentptr += 8; bytesleftforcurrentbeacon -= 8; /* beacon interval is 2 bytes long */ - memcpy(&fixedie.beaconinterval, pcurrentptr, 2); - pBSSEntry->beaconperiod = le16_to_cpu(fixedie.beaconinterval); + fixedie.beaconinterval = bss->beaconperiod = le16_to_cpup((void *)pcurrentptr); pcurrentptr += 2; bytesleftforcurrentbeacon -= 2; /* capability information is 2 bytes long */ - memcpy(&fixedie.capabilities, pcurrentptr, 2); - lbs_pr_debug(1, "InterpretIE: fixedie.capabilities=0x%X\n", + memcpy(&fixedie.capabilities, pcurrentptr, 2); + 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_pr_debug(1, "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_pr_debug(1, "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 */ @@ -1007,94 +1041,83 @@ static int InterpretBSSDescriptionWithIE(struct bss_descriptor * pBSSEntry, elemlen = *((u8 *) pcurrentptr + 1); if (bytesleftforcurrentbeacon < elemlen) { - lbs_pr_debug(1, "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_pr_debug(1, "ssid: %32s", pBSSEntry->ssid.ssid); + bss->ssid_len = elemlen; + memcpy(bss->ssid, (pcurrentptr + 2), elemlen); + lbs_deb_scan("ssid '%s', ssid length %u\n", + escape_essid(bss->ssid, bss->ssid_len), + bss->ssid_len); 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_pr_debug(1, "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); +#if 0 /* I think we can store these LE */ + bss->phyparamset.fhparamset.dwelltime + = le16_to_cpu(bss->phyparamset.fhparamset.dwelltime); +#endif 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); +#if 0 + bss->ssparamset.ibssparamset.atimwindow + = le16_to_cpu(bss->ssparamset.ibssparamset.atimwindow); +#endif 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_pr_debug(1, "InterpretIE: 11D- Err " + lbs_deb_scan("process_bss: 11D- Err " "CountryInfo len =%d min=%zd max=254\n", pcountryinfo->len, sizeof(pcountryinfo->countrycode)); - LEAVE(); - return -1; + ret = -1; + 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; @@ -1114,12 +1137,10 @@ 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); } @@ -1132,24 +1153,17 @@ 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; @@ -1165,7 +1179,14 @@ static int InterpretBSSDescriptionWithIE(struct bss_descriptor * pBSSEntry, } /* while (bytesleftforcurrentbeacon > 2) */ - return 0; + /* Timestamp */ + bss->last_scanned = jiffies; + + ret = 0; + +done: + lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); + return ret; } /** @@ -1176,15 +1197,12 @@ static int InterpretBSSDescriptionWithIE(struct bss_descriptor * pBSSEntry, * * @return 0--ssid is same, otherwise is different */ -int libertas_SSID_cmp(struct WLAN_802_11_SSID *ssid1, struct WLAN_802_11_SSID *ssid2) +int libertas_ssid_cmp(u8 *ssid1, u8 ssid1_len, u8 *ssid2, u8 ssid2_len) { - if (!ssid1 || !ssid2) - return -1; - - if (ssid1->ssidlength != ssid2->ssidlength) + if (ssid1_len != ssid2_len) return -1; - return memcmp(ssid1->ssid, ssid2->ssid, ssid1->ssidlength); + return memcmp(ssid1, ssid2, ssid1_len); } /** @@ -1196,38 +1214,41 @@ 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_pr_debug(1, "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].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; + mutex_lock(&adapter->lock); + list_for_each_entry (iter_bss, &adapter->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(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; } /** @@ -1240,61 +1261,60 @@ 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 WLAN_802_11_SSID *ssid, u8 * bssid, u8 mode) +struct bss_descriptor * libertas_find_ssid_in_list(wlan_adapter * adapter, + u8 *ssid, u8 ssid_len, u8 * bssid, u8 mode, + int channel) { - 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_pr_debug(1, "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; - } + 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, 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(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; } /** @@ -1307,43 +1327,38 @@ 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; + struct bss_descriptor * iter_bss; + struct bss_descriptor * best_bss = NULL; - ENTER(); + mutex_lock(&adapter->lock); - lbs_pr_debug(1, "Num of BSSIDs = %d\n", adapter->numinscantable); - - 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; } } - LEAVE(); - return bestnet; + mutex_unlock(&adapter->lock); + return best_bss; } /** @@ -1354,41 +1369,30 @@ 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, - u8 preferred_mode, u8 *out_mode) +int libertas_find_best_network_ssid(wlan_private * priv, + u8 *out_ssid, u8 *out_ssid_len, 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; - ENTER(); + lbs_deb_enter(LBS_DEB_ASSOC); - memset(pSSID, 0, sizeof(struct WLAN_802_11_SSID)); - - wlan_scan_networks(priv, NULL); + 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_len > 0)) { + memcpy(out_ssid, &found->ssid, IW_ESSID_MAX_SIZE); + *out_ssid_len = found->ssid_len; + *out_mode = found->mode; + ret = 0; } -out: - LEAVE(); + lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); return ret; } @@ -1407,20 +1411,15 @@ int libertas_set_scan(struct net_device *dev, struct iw_request_info *info, { wlan_private *priv = dev->priv; wlan_adapter *adapter = priv->adapter; - union iwreq_data wrqu; - ENTER(); + lbs_deb_enter(LBS_DEB_SCAN); - if (!wlan_scan_networks(priv, NULL)) { - memset(&wrqu, 0, sizeof(union iwreq_data)); - wireless_send_event(priv->wlan_dev.netdev, SIOCGIWSCAN, &wrqu, - NULL); - } + wlan_scan_networks(priv, NULL, 0); if (adapter->surpriseremoved) return -1; - LEAVE(); + lbs_deb_leave(LBS_DEB_SCAN); return 0; } @@ -1433,32 +1432,31 @@ int libertas_set_scan(struct net_device *dev, struct iw_request_info *info, * * @return 0-success, otherwise fail */ -int libertas_send_specific_SSID_scan(wlan_private * priv, - struct WLAN_802_11_SSID *prequestedssid, - u8 keeppreviousscan) +int libertas_send_specific_ssid_scan(wlan_private * priv, + u8 *ssid, u8 ssid_len, u8 clear_ssid) { wlan_adapter *adapter = priv->adapter; struct wlan_ioctl_user_scan_cfg scancfg; + int ret = 0; - ENTER(); + lbs_deb_enter(LBS_DEB_ASSOC); - if (prequestedssid == NULL) { - return -1; - } + if (!ssid_len) + goto out; memset(&scancfg, 0x00, sizeof(scancfg)); + memcpy(scancfg.ssid, ssid, ssid_len); + scancfg.ssid_len = ssid_len; + scancfg.clear_ssid = clear_ssid; - memcpy(scancfg.specificSSID, prequestedssid->ssid, - prequestedssid->ssidlength); - scancfg.keeppreviousscan = keeppreviousscan; - - wlan_scan_networks(priv, &scancfg); + wlan_scan_networks(priv, &scancfg, 1); if (adapter->surpriseremoved) return -1; wait_event_interruptible(adapter->cmd_pending, !adapter->nr_cmd_pending); - LEAVE(); - return 0; +out: + lbs_deb_leave(LBS_DEB_ASSOC); + return ret; } /** @@ -1470,304 +1468,235 @@ int libertas_send_specific_SSID_scan(wlan_private * priv, * * @return 0-success, otherwise fail */ -int libertas_send_specific_BSSID_scan(wlan_private * priv, u8 * bssid, u8 keeppreviousscan) +int libertas_send_specific_bssid_scan(wlan_private * priv, u8 * bssid, u8 clear_bssid) { struct wlan_ioctl_user_scan_cfg scancfg; - ENTER(); + lbs_deb_enter(LBS_DEB_ASSOC); - if (bssid == NULL) { - return -1; - } + if (bssid == NULL) + goto out; memset(&scancfg, 0x00, sizeof(scancfg)); - memcpy(scancfg.specificBSSID, bssid, sizeof(scancfg.specificBSSID)); - scancfg.keeppreviousscan = keeppreviousscan; + memcpy(scancfg.bssid, bssid, ETH_ALEN); + scancfg.clear_bssid = clear_bssid; - wlan_scan_networks(priv, &scancfg); + wlan_scan_networks(priv, &scancfg, 1); if (priv->adapter->surpriseremoved) return -1; wait_event_interruptible(priv->adapter->cmd_pending, !priv->adapter->nr_cmd_pending); - LEAVE(); +out: + lbs_deb_leave(LBS_DEB_ASSOC); 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; #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; - - ENTER(); - - /* - * 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->connect_status == libertas_connected) - lbs_pr_debug(1, "Current ssid: %32s\n", - adapter->curbssparams.ssid.ssid); + 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; + } - lbs_pr_debug(1, "Scan: Get: numinscantable = %d\n", - adapter->numinscantable); + /* 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((u32) bss->ssid_len, (u32) IW_ESSID_MAX_SIZE); + start = iwe_stream_add_point(start, stop, &iwe, bss->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]); + } - /* 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. + /* 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. */ - for (i = 0; i < adapter->numinscantable; i++) { - if ((current_ev + MAX_SCAN_CELL_SIZE) >= end_buf) { - lbs_pr_debug(1, "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_pr_debug(1, "i=%d ssid: %32s\n", i, pscantable->ssid.ssid); - - cfp = - libertas_find_cfp_by_band_and_channel(adapter, 0, - pscantable->channel); - if (!cfp) { - lbs_pr_debug(1, "Invalid channel number %d\n", - pscantable->channel); - continue; - } - - if (!ssid_valid(&adapter->scantable[i].ssid)) { - 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); + if ((adapter->mode == IW_MODE_ADHOC) + && adapter->adhoccreate + && !libertas_ssid_cmp(adapter->curbssparams.ssid, + adapter->curbssparams.ssid_len, + bss->ssid, bss->ssid_len)) { + int snr, nf; + snr = adapter->SNR[TYPE_RXPD][TYPE_AVG] / AVG_SCALE; + nf = adapter->NF[TYPE_RXPD][TYPE_AVG] / AVG_SCALE; + iwe.u.qual.level = CAL_RSSI(snr, nf); + } + start = iwe_stream_add_event(start, stop, &iwe, IW_EV_QUAL_LEN); - current_val = current_ev + IW_EV_LCP_LEN; + /* 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); - iwe.cmd = SIOCGIWRATE; + current_val = start + IW_EV_LCP_LEN; - iwe.u.bitrate.fixed = 0; - iwe.u.bitrate.disabled = 0; - iwe.u.bitrate.value = 0; + iwe.cmd = SIOCGIWRATE; + iwe.u.bitrate.fixed = 0; + iwe.u.bitrate.disabled = 0; + iwe.u.bitrate.value = 0; + 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) */ - 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); + 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, + adapter->curbssparams.ssid_len, + bss->ssid, bss->ssid_len) + && 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); + } - } - 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); - } + 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); + } + return start; +} - 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); +/** + * @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; + + lbs_deb_enter(LBS_DEB_ASSOC); + + /* 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); + + /* Update RSSI if current BSS is a locally created ad-hoc BSS */ + if ((adapter->mode == IW_MODE_ADHOC) && adapter->adhoccreate) { + libertas_prepare_and_send_command(priv, cmd_802_11_rssi, 0, + cmd_option_waitforrsp, 0, NULL); + } - lbs_pr_debug(1, "iwe.u.data.length %d\n", - iwe.u.data.length); - lbs_pr_debug(1, "BUF: %s \n", buf); + mutex_lock(&adapter->lock); + list_for_each_entry_safe (iter_bss, safe, &adapter->network_list, list) { + char * next_ev; + unsigned long stale_time; - 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); + if (stop - ev < SCAN_ITEM_SIZE) { + err = -E2BIG; + break; } - current_val = current_ev + IW_EV_LCP_LEN; + /* 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; + } - /* - * 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; - LEAVE(); - return 0; + lbs_deb_leave(LBS_DEB_ASSOC); + return err; } /** @@ -1796,13 +1725,13 @@ int libertas_cmd_80211_scan(wlan_private * priv, struct cmd_ds_802_11_scan *pscan = &cmd->params.scan; struct wlan_scan_cmd_config *pscancfg; - ENTER(); + 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->BSSID, pscancfg->bssid, sizeof(pscan->BSSID)); memcpy(pscan->tlvbuffer, pscancfg->tlvbuffer, pscancfg->tlvbufferlen); cmd->command = cpu_to_le16(cmd_802_11_scan); @@ -1812,12 +1741,26 @@ int libertas_cmd_80211_scan(wlan_private * priv, + sizeof(pscan->BSSID) + pscancfg->tlvbufferlen + S_DS_GEN); - lbs_pr_debug(1, "SCAN_CMD: command=%x, size=%x, seqnum=%x\n", - cmd->command, cmd->size, cmd->seqnum); - LEAVE(); + lbs_deb_scan("SCAN_CMD: command=%x, size=%x, seqnum=%x\n", + le16_to_cpu(cmd->command), le16_to_cpu(cmd->size), + le16_to_cpu(cmd->seqnum)); + + lbs_deb_leave(LBS_DEB_ASSOC); 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_len == dst->ssid_len) && + (src->channel == dst->channel) && + !compare_ether_addr(src->bssid, dst->bssid) && + !memcmp(src->ssid, dst->ssid, src->ssid_len)); +} + /** * @brief This function handles the command response of scan * @@ -1846,38 +1789,45 @@ 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; + int ret; - ENTER(); + 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_pr_debug(1, - "SCAN_RESP: Invalid number of AP returned (%d)!!\n", - pscan->nr_sets); - LEAVE(); - return -1; + 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; } bytesleft = le16_to_cpu(pscan->bssdescriptsize); - lbs_pr_debug(1, "SCAN_RESP: bssdescriptsize %d\n", bytesleft); + lbs_deb_scan("SCAN_RESP: bssdescriptsize %d\n", bytesleft); scanrespsize = le16_to_cpu(resp->size); - lbs_pr_debug(1, "SCAN_RESP: returned %d AP before parsing\n", + 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 @@ -1901,105 +1851,68 @@ 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 * 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_pr_debug(1, - "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_pr_debug(1, - "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; + } + + 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]); - /* error parsing/interpreting the scan response, skipped */ - lbs_pr_debug(1, "SCAN_RESP: " - "InterpretBSSDescriptionWithIE returned ERROR\n"); + /* + * 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) { + new.networktsf = le64_to_cpup(&ptsftlv->tsftable[idx]); } - } - lbs_pr_debug(1, "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; - LEAVE(); - return 0; +done: + lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); + return ret; } |