X-Git-Url: http://ftp.safe.ca/?p=safe%2Fjmp%2Flinux-2.6;a=blobdiff_plain;f=drivers%2Fnet%2Fwireless%2Flibertas%2Fscan.c;h=c6a6c042b82f66acddc00fe02e9f4e523d11b600;hp=f471157c02df46230f028e230df5492d1577bbd0;hb=e93156e7c4c3e2be355cac27c58664e4385c58fd;hpb=ece561919326236c7fb791a5e883f0eb76af029e diff --git a/drivers/net/wireless/libertas/scan.c b/drivers/net/wireless/libertas/scan.c index f471157..c6a6c04 100644 --- a/drivers/net/wireless/libertas/scan.c +++ b/drivers/net/wireless/libertas/scan.c @@ -4,44 +4,41 @@ * IOCTL handlers as well as command preperation and response routines * for sending scan commands to the firmware. */ -#include -#include -#include -#include +#include +#include #include - -#include -#include +#include +#include +#include #include "host.h" -#include "decl.h" #include "dev.h" #include "scan.h" -#include "join.h" +#include "assoc.h" +#include "wext.h" +#include "cmd.h" //! Approximate amount of data needed to pass a scan result back to iwlist #define MAX_SCAN_CELL_SIZE (IW_EV_ADDR_LEN \ - + IW_ESSID_MAX_SIZE \ + + IEEE80211_MAX_SSID_LEN \ + IW_EV_UINT_LEN \ + IW_EV_FREQ_LEN \ + IW_EV_QUAL_LEN \ - + IW_ESSID_MAX_SIZE \ + + IEEE80211_MAX_SSID_LEN \ + IW_EV_PARAM_LEN \ + 40) /* 40 for WPAIE */ //! Memory needed to store a max sized channel List TLV for a firmware scan -#define CHAN_TLV_MAX_SIZE (sizeof(struct mrvlietypesheader) \ +#define CHAN_TLV_MAX_SIZE (sizeof(struct mrvl_ie_header) \ + (MRVDRV_MAX_CHANNELS_PER_SCAN \ * sizeof(struct chanscanparamset))) //! Memory needed to store a max number/size SSID TLV for a firmware scan -#define SSID_TLV_MAX_SIZE (1 * sizeof(struct mrvlietypes_ssidparamset)) +#define SSID_TLV_MAX_SIZE (1 * sizeof(struct mrvl_ie_ssid_param_set)) -//! Maximum memory needed for a wlan_scan_cmd_config with all TLVs at max -#define MAX_SCAN_CFG_ALLOC (sizeof(struct wlan_scan_cmd_config) \ - + sizeof(struct mrvlietypes_numprobes) \ - + CHAN_TLV_MAX_SIZE \ - + SSID_TLV_MAX_SIZE) +//! Maximum memory needed for a cmd_ds_802_11_scan with all TLVs at max +#define MAX_SCAN_CFG_ALLOC (sizeof(struct cmd_ds_802_11_scan) \ + + CHAN_TLV_MAX_SIZE + SSID_TLV_MAX_SIZE) //! The maximum number of channels the firmware can scan per command #define MRVDRV_MAX_CHANNELS_PER_SCAN 14 @@ -60,191 +57,284 @@ //! Scan time specified in the channel TLV for each channel for active scans #define MRVDRV_ACTIVE_SCAN_CHAN_TIME 100 -static const u8 zeromac[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; -static const u8 bcastmac[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; +#define DEFAULT_MAX_SCAN_AGE (15 * HZ) -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 int lbs_ret_80211_scan(struct lbs_private *priv, unsigned long dummy, + struct cmd_header *resp); -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] != MFIE_TYPE_GENERIC - && match_bss->rsn_ie[0] != MFIE_TYPE_RSN - && !(match_bss->capability & WLAN_CAPABILITY_PRIVACY)) { - return 1; - } - return 0; -} +/*********************************************************************/ +/* */ +/* Misc helper functions */ +/* */ +/*********************************************************************/ -static inline int match_bss_static_wep(struct wlan_802_11_security * secinfo, - struct bss_descriptor * match_bss) +/** + * @brief Unsets the MSB on basic rates + * + * Scan through an array and unset the MSB for basic data rates. + * + * @param rates buffer of data rates + * @param len size of buffer + */ +static void lbs_unset_basic_rate_flags(u8 *rates, size_t len) { - if ( secinfo->wep_enabled - && !secinfo->WPAenabled - && !secinfo->WPA2enabled - && (match_bss->capability & WLAN_CAPABILITY_PRIVACY)) { - return 1; - } - return 0; + int i; + + for (i = 0; i < len; i++) + rates[i] &= 0x7f; } -static inline int match_bss_wpa(struct wlan_802_11_security * secinfo, - struct bss_descriptor * match_bss) + +static inline void clear_bss_descriptor(struct bss_descriptor *bss) { - if ( !secinfo->wep_enabled - && secinfo->WPAenabled - && (match_bss->wpa_ie[0] == MFIE_TYPE_GENERIC) - /* privacy bit may NOT be set in some APs like LinkSys WRT54G - && (match_bss->capability & WLAN_CAPABILITY_PRIVACY)) { - */ - ) { - return 1; - } - return 0; + /* Don't blow away ->list, just BSS data */ + memset(bss, 0, offsetof(struct bss_descriptor, list)); } -static inline int match_bss_wpa2(struct wlan_802_11_security * secinfo, - struct bss_descriptor * match_bss) +/** + * @brief Compare two SSIDs + * + * @param ssid1 A pointer to ssid to compare + * @param ssid2 A pointer to ssid to compare + * + * @return 0: ssid is same, otherwise is different + */ +int lbs_ssid_cmp(uint8_t *ssid1, uint8_t ssid1_len, uint8_t *ssid2, + uint8_t ssid2_len) { - if ( !secinfo->wep_enabled - && secinfo->WPA2enabled - && (match_bss->rsn_ie[0] == MFIE_TYPE_RSN) - /* privacy bit may NOT be set in some APs like LinkSys WRT54G - && (match_bss->capability & WLAN_CAPABILITY_PRIVACY)) { - */ - ) { - return 1; - } - return 0; + if (ssid1_len != ssid2_len) + return -1; + + return memcmp(ssid1, ssid2, ssid1_len); } -static inline int match_bss_dynamic_wep(struct wlan_802_11_security * secinfo, - struct bss_descriptor * match_bss) +static inline int is_same_network(struct bss_descriptor *src, + struct bss_descriptor *dst) { - if ( !secinfo->wep_enabled - && !secinfo->WPAenabled - && !secinfo->WPA2enabled - && (match_bss->wpa_ie[0] != MFIE_TYPE_GENERIC) - && (match_bss->rsn_ie[0] != MFIE_TYPE_RSN) - && (match_bss->capability & WLAN_CAPABILITY_PRIVACY)) { - return 1; - } - return 0; + /* A network is only a duplicate if the channel, BSSID, and ESSID + * all match. We treat all with the same BSSID and channel + * as one network */ + return ((src->ssid_len == dst->ssid_len) && + (src->channel == dst->channel) && + !compare_ether_addr(src->bssid, dst->bssid) && + !memcmp(src->ssid, dst->ssid, src->ssid_len)); } + + +/*********************************************************************/ +/* */ +/* Region channel support */ +/* */ +/*********************************************************************/ + +#define LBS_TX_PWR_DEFAULT 20 /*100mW */ +#define LBS_TX_PWR_US_DEFAULT 20 /*100mW */ +#define LBS_TX_PWR_JP_DEFAULT 16 /*50mW */ +#define LBS_TX_PWR_FR_DEFAULT 20 /*100mW */ +#define LBS_TX_PWR_EMEA_DEFAULT 20 /*100mW */ + +/* Format { channel, frequency (MHz), maxtxpower } */ +/* band: 'B/G', region: USA FCC/Canada IC */ +static struct chan_freq_power channel_freq_power_US_BG[] = { + {1, 2412, LBS_TX_PWR_US_DEFAULT}, + {2, 2417, LBS_TX_PWR_US_DEFAULT}, + {3, 2422, LBS_TX_PWR_US_DEFAULT}, + {4, 2427, LBS_TX_PWR_US_DEFAULT}, + {5, 2432, LBS_TX_PWR_US_DEFAULT}, + {6, 2437, LBS_TX_PWR_US_DEFAULT}, + {7, 2442, LBS_TX_PWR_US_DEFAULT}, + {8, 2447, LBS_TX_PWR_US_DEFAULT}, + {9, 2452, LBS_TX_PWR_US_DEFAULT}, + {10, 2457, LBS_TX_PWR_US_DEFAULT}, + {11, 2462, LBS_TX_PWR_US_DEFAULT} +}; + +/* band: 'B/G', region: Europe ETSI */ +static struct chan_freq_power channel_freq_power_EU_BG[] = { + {1, 2412, LBS_TX_PWR_EMEA_DEFAULT}, + {2, 2417, LBS_TX_PWR_EMEA_DEFAULT}, + {3, 2422, LBS_TX_PWR_EMEA_DEFAULT}, + {4, 2427, LBS_TX_PWR_EMEA_DEFAULT}, + {5, 2432, LBS_TX_PWR_EMEA_DEFAULT}, + {6, 2437, LBS_TX_PWR_EMEA_DEFAULT}, + {7, 2442, LBS_TX_PWR_EMEA_DEFAULT}, + {8, 2447, LBS_TX_PWR_EMEA_DEFAULT}, + {9, 2452, LBS_TX_PWR_EMEA_DEFAULT}, + {10, 2457, LBS_TX_PWR_EMEA_DEFAULT}, + {11, 2462, LBS_TX_PWR_EMEA_DEFAULT}, + {12, 2467, LBS_TX_PWR_EMEA_DEFAULT}, + {13, 2472, LBS_TX_PWR_EMEA_DEFAULT} +}; + +/* band: 'B/G', region: Spain */ +static struct chan_freq_power channel_freq_power_SPN_BG[] = { + {10, 2457, LBS_TX_PWR_DEFAULT}, + {11, 2462, LBS_TX_PWR_DEFAULT} +}; + +/* band: 'B/G', region: France */ +static struct chan_freq_power channel_freq_power_FR_BG[] = { + {10, 2457, LBS_TX_PWR_FR_DEFAULT}, + {11, 2462, LBS_TX_PWR_FR_DEFAULT}, + {12, 2467, LBS_TX_PWR_FR_DEFAULT}, + {13, 2472, LBS_TX_PWR_FR_DEFAULT} +}; + +/* band: 'B/G', region: Japan */ +static struct chan_freq_power channel_freq_power_JPN_BG[] = { + {1, 2412, LBS_TX_PWR_JP_DEFAULT}, + {2, 2417, LBS_TX_PWR_JP_DEFAULT}, + {3, 2422, LBS_TX_PWR_JP_DEFAULT}, + {4, 2427, LBS_TX_PWR_JP_DEFAULT}, + {5, 2432, LBS_TX_PWR_JP_DEFAULT}, + {6, 2437, LBS_TX_PWR_JP_DEFAULT}, + {7, 2442, LBS_TX_PWR_JP_DEFAULT}, + {8, 2447, LBS_TX_PWR_JP_DEFAULT}, + {9, 2452, LBS_TX_PWR_JP_DEFAULT}, + {10, 2457, LBS_TX_PWR_JP_DEFAULT}, + {11, 2462, LBS_TX_PWR_JP_DEFAULT}, + {12, 2467, LBS_TX_PWR_JP_DEFAULT}, + {13, 2472, LBS_TX_PWR_JP_DEFAULT}, + {14, 2484, LBS_TX_PWR_JP_DEFAULT} +}; + /** - * @brief Check if a scanned network compatible with the driver settings - * - * WEP WPA WPA2 ad-hoc encrypt Network - * enabled enabled enabled AES mode privacy WPA WPA2 Compatible - * 0 0 0 0 NONE 0 0 0 yes No security - * 1 0 0 0 NONE 1 0 0 yes Static WEP - * 0 1 0 0 x 1x 1 x yes WPA - * 0 0 1 0 x 1x x 1 yes WPA2 - * 0 0 0 1 NONE 1 0 0 yes Ad-hoc AES - * 0 0 0 0 !=NONE 1 0 0 yes Dynamic WEP - * - * - * @param adapter A pointer to wlan_adapter - * @param index Index in scantable to check against current driver settings - * @param mode Network mode: Infrastructure or IBSS + * the structure for channel, frequency and power + */ +struct region_cfp_table { + u8 region; + struct chan_freq_power *cfp_BG; + int cfp_no_BG; +}; + +/** + * the structure for the mapping between region and CFP + */ +static struct region_cfp_table region_cfp_table[] = { + {0x10, /*US FCC */ + channel_freq_power_US_BG, + ARRAY_SIZE(channel_freq_power_US_BG), + } + , + {0x20, /*CANADA IC */ + channel_freq_power_US_BG, + ARRAY_SIZE(channel_freq_power_US_BG), + } + , + {0x30, /*EU*/ channel_freq_power_EU_BG, + ARRAY_SIZE(channel_freq_power_EU_BG), + } + , + {0x31, /*SPAIN*/ channel_freq_power_SPN_BG, + ARRAY_SIZE(channel_freq_power_SPN_BG), + } + , + {0x32, /*FRANCE*/ channel_freq_power_FR_BG, + ARRAY_SIZE(channel_freq_power_FR_BG), + } + , + {0x40, /*JAPAN*/ channel_freq_power_JPN_BG, + ARRAY_SIZE(channel_freq_power_JPN_BG), + } + , +/*Add new region here */ +}; + +/** + * @brief This function finds the CFP in + * region_cfp_table based on region and band parameter. * - * @return Index in scantable, or error code if negative + * @param region The region code + * @param band The band + * @param cfp_no A pointer to CFP number + * @return A pointer to CFP */ -static int is_network_compatible(wlan_adapter * adapter, - struct bss_descriptor * bss, u8 mode) +static struct chan_freq_power *lbs_get_region_cfp_table(u8 region, int *cfp_no) { - int matched = 0; + int i, end; - lbs_deb_enter(LBS_DEB_ASSOC); + lbs_deb_enter(LBS_DEB_MAIN); - if (bss->mode != mode) - goto done; + end = ARRAY_SIZE(region_cfp_table); - 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", - (bss->capability & WLAN_CAPABILITY_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->capability & WLAN_CAPABILITY_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->capability & WLAN_CAPABILITY_PRIVACY)); - goto done; + for (i = 0; i < end ; i++) { + lbs_deb_main("region_cfp_table[i].region=%d\n", + region_cfp_table[i].region); + if (region_cfp_table[i].region == region) { + *cfp_no = region_cfp_table[i].cfp_no_BG; + lbs_deb_leave(LBS_DEB_MAIN); + return region_cfp_table[i].cfp_BG; + } } - /* 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->capability & WLAN_CAPABILITY_PRIVACY)); + lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL"); + return NULL; +} -done: - lbs_deb_leave(LBS_DEB_SCAN); - return matched; +int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band) +{ + int ret = 0; + int i = 0; + + struct chan_freq_power *cfp; + int cfp_no; + + lbs_deb_enter(LBS_DEB_MAIN); + + memset(priv->region_channel, 0, sizeof(priv->region_channel)); + + cfp = lbs_get_region_cfp_table(region, &cfp_no); + if (cfp != NULL) { + priv->region_channel[i].nrcfp = cfp_no; + priv->region_channel[i].CFP = cfp; + } else { + lbs_deb_main("wrong region code %#x in band B/G\n", + region); + ret = -1; + goto out; + } + priv->region_channel[i].valid = 1; + priv->region_channel[i].region = region; + priv->region_channel[i].band = band; + i++; +out: + lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret); + return ret; } + + + +/*********************************************************************/ +/* */ +/* Main scanning support */ +/* */ +/*********************************************************************/ + /** * @brief Create a channel list for the driver to scan based on region info * + * Only used from lbs_scan_setup_scan_config() + * * Use the driver region/band information to construct a comprehensive list * of channels to scan. This routine is used for any scan that is not * provided a specific channel list to scan. * - * @param priv A pointer to wlan_private structure + * @param priv A pointer to struct lbs_private structure * @param scanchanlist Output parameter: resulting channel list to scan - * @param filteredscan Flag indicating whether or not a BSSID or SSID filter - * is being sent in the command to firmware. Used to - * increase the number of channels sent in a scan - * command and to disable the firmware channel scan - * filter. * * @return void */ -static void wlan_scan_create_channel_list(wlan_private * priv, - struct chanscanparamset * scanchanlist, - u8 filteredscan) +static int lbs_scan_create_channel_list(struct lbs_private *priv, + struct chanscanparamset *scanchanlist) { - - wlan_adapter *adapter = priv->adapter; struct region_channel *scanregion; struct chan_freq_power *cfp; int rgnidx; int chanidx; int nextchan; - u8 scantype; + uint8_t scantype; chanidx = 0; @@ -252,490 +342,173 @@ static void wlan_scan_create_channel_list(wlan_private * priv, * be changed to passive on a per channel basis if restricted by * regulatory requirements (11d or 11h) */ - scantype = adapter->scantype; - - for (rgnidx = 0; rgnidx < ARRAY_SIZE(adapter->region_channel); rgnidx++) { - if (priv->adapter->enable11d && - adapter->connect_status != LIBERTAS_CONNECTED) { - /* Scan all the supported chan for the first scan */ - if (!adapter->universal_channel[rgnidx].valid) - continue; - scanregion = &adapter->universal_channel[rgnidx]; - - /* clear the parsed_region_chan for the first scan */ - memset(&adapter->parsed_region_chan, 0x00, - sizeof(adapter->parsed_region_chan)); - } else { - if (!adapter->region_channel[rgnidx].valid) - continue; - scanregion = &adapter->region_channel[rgnidx]; - } + scantype = CMD_SCAN_TYPE_ACTIVE; - for (nextchan = 0; - nextchan < scanregion->nrcfp; nextchan++, chanidx++) { + for (rgnidx = 0; rgnidx < ARRAY_SIZE(priv->region_channel); rgnidx++) { + if (!priv->region_channel[rgnidx].valid) + continue; + scanregion = &priv->region_channel[rgnidx]; + + for (nextchan = 0; nextchan < scanregion->nrcfp; nextchan++, chanidx++) { + struct chanscanparamset *chan = &scanchanlist[chanidx]; cfp = scanregion->CFP + nextchan; - if (priv->adapter->enable11d) { - scantype = - libertas_get_scan_type_11d(cfp->channel, - &adapter-> - parsed_region_chan); - } - - switch (scanregion->band) { - case BAND_B: - case BAND_G: - default: - scanchanlist[chanidx].radiotype = - CMD_SCAN_RADIO_TYPE_BG; - break; - } + if (scanregion->band == BAND_B || scanregion->band == BAND_G) + chan->radiotype = CMD_SCAN_RADIO_TYPE_BG; if (scantype == CMD_SCAN_TYPE_PASSIVE) { - scanchanlist[chanidx].maxscantime = - cpu_to_le16(MRVDRV_PASSIVE_SCAN_CHAN_TIME); - scanchanlist[chanidx].chanscanmode.passivescan = - 1; + chan->maxscantime = cpu_to_le16(MRVDRV_PASSIVE_SCAN_CHAN_TIME); + chan->chanscanmode.passivescan = 1; } else { - scanchanlist[chanidx].maxscantime = - cpu_to_le16(MRVDRV_ACTIVE_SCAN_CHAN_TIME); - scanchanlist[chanidx].chanscanmode.passivescan = - 0; + chan->maxscantime = cpu_to_le16(MRVDRV_ACTIVE_SCAN_CHAN_TIME); + chan->chanscanmode.passivescan = 0; } - scanchanlist[chanidx].channumber = cfp->channel; - - if (filteredscan) { - scanchanlist[chanidx].chanscanmode. - disablechanfilt = 1; - } + chan->channumber = cfp->channel; } } + return chanidx; } -/** - * @brief Construct a wlan_scan_cmd_config structure to use in issue scan cmds - * - * Application layer or other functions can invoke wlan_scan_networks - * with a scan configuration supplied in a wlan_ioctl_user_scan_cfg struct. - * This structure is used as the basis of one or many wlan_scan_cmd_config - * commands that are sent to the command processing module and sent to - * firmware. +/* + * Add SSID TLV of the form: * - * Create a wlan_scan_cmd_config based on the following user supplied - * parameters (if present): - * - SSID filter - * - BSSID filter - * - Number of Probes to be sent - * - channel list - * - * If the SSID or BSSID filter is not present, disable/clear the filter. - * If the number of probes is not set, use the adapter default setting - * Qualify the channel - * - * @param priv A pointer to wlan_private structure - * @param puserscanin NULL or pointer to scan configuration parameters - * @param ppchantlvout Output parameter: Pointer to the start of the - * channel TLV portion of the output scan config - * @param pscanchanlist Output parameter: Pointer to the resulting channel - * list to scan - * @param pmaxchanperscan Output parameter: Number of channels to scan for - * each issuance of the firmware scan command - * @param pfilteredscan Output parameter: Flag indicating whether or not - * a BSSID or SSID filter is being sent in the - * command to firmware. Used to increase the number - * of channels sent in a scan command and to - * disable the firmware channel scan filter. - * @param pscancurrentonly Output parameter: Flag indicating whether or not - * we are only scanning our current active channel - * - * @return resulting scan configuration + * TLV-ID SSID 00 00 + * length 06 00 + * ssid 4d 4e 54 45 53 54 */ -static struct wlan_scan_cmd_config * -wlan_scan_setup_scan_config(wlan_private * priv, - const struct wlan_ioctl_user_scan_cfg * puserscanin, - struct mrvlietypes_chanlistparamset ** ppchantlvout, - struct chanscanparamset * pscanchanlist, - int *pmaxchanperscan, - u8 * pfilteredscan, - u8 * pscancurrentonly) +static int lbs_scan_add_ssid_tlv(struct lbs_private *priv, u8 *tlv) { - wlan_adapter *adapter = priv->adapter; - struct mrvlietypes_numprobes *pnumprobestlv; - struct mrvlietypes_ssidparamset *pssidtlv; - struct wlan_scan_cmd_config * pscancfgout = NULL; - u8 *ptlvpos; - u16 numprobes; - int chanidx; - int scantype; - int scandur; - int channel; - int radiotype; - - pscancfgout = kzalloc(MAX_SCAN_CFG_ALLOC, GFP_KERNEL); - if (pscancfgout == NULL) - goto out; - - /* The tlvbufferlen is calculated for each scan command. The TLVs added - * in this routine will be preserved since the routine that sends - * the command will append channelTLVs at *ppchantlvout. The difference - * between the *ppchantlvout and the tlvbuffer start will be used - * to calculate the size of anything we add in this routine. - */ - pscancfgout->tlvbufferlen = 0; - - /* Running tlv pointer. Assigned to ppchantlvout at end of function - * so later routines know where channels can be added to the command buf - */ - ptlvpos = pscancfgout->tlvbuffer; - - /* - * Set the initial scan paramters for progressive scanning. If a specific - * BSSID or SSID is used, the number of channels in the scan command - * will be increased to the absolute maximum - */ - *pmaxchanperscan = MRVDRV_CHANNELS_PER_SCAN_CMD; + struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv; - /* Initialize the scan as un-filtered by firmware, set to TRUE below if - * a SSID or BSSID filter is sent in the command - */ - *pfilteredscan = 0; - - /* Initialize the scan as not being only on the current channel. If - * the channel list is customized, only contains one channel, and - * is the active channel, this is set true and data flow is not halted. - */ - *pscancurrentonly = 0; - - if (puserscanin) { - - /* Set the bss type scan filter, use adapter setting if unset */ - pscancfgout->bsstype = - (puserscanin->bsstype ? puserscanin->bsstype : adapter-> - scanmode); - - /* Set the number of probes to send, use adapter setting if unset */ - numprobes = (puserscanin->numprobes ? puserscanin->numprobes : - adapter->scanprobes); - - /* - * Set the BSSID filter to the incoming configuration, - * if non-zero. If not set, it will remain disabled (all zeros). - */ - memcpy(pscancfgout->bssid, puserscanin->bssid, - sizeof(pscancfgout->bssid)); - - 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(puserscanin->ssid_len); - memcpy(pssidtlv->ssid, puserscanin->ssid, - puserscanin->ssid_len); - ptlvpos += sizeof(pssidtlv->header) + puserscanin->ssid_len; - } - - /* - * The default number of channels sent in the command is low to - * ensure the response buffer from the firmware does not truncate - * scan results. That is not an issue with an SSID or BSSID - * filter applied to the scan results in the firmware. - */ - if ( puserscanin->ssid_len - || (compare_ether_addr(pscancfgout->bssid, &zeromac[0]) != 0)) { - *pmaxchanperscan = MRVDRV_MAX_CHANNELS_PER_SCAN; - *pfilteredscan = 1; - } - } else { - pscancfgout->bsstype = adapter->scanmode; - numprobes = adapter->scanprobes; - } - - /* If the input config or adapter has the number of Probes set, add tlv */ - if (numprobes) { - pnumprobestlv = (struct mrvlietypes_numprobes *) ptlvpos; - pnumprobestlv->header.type = cpu_to_le16(TLV_TYPE_NUMPROBES); - pnumprobestlv->header.len = cpu_to_le16(2); - pnumprobestlv->numprobes = cpu_to_le16(numprobes); - - ptlvpos += sizeof(*pnumprobestlv); - } - - /* - * Set the output for the channel TLV to the address in the tlv buffer - * past any TLVs that were added in this fuction (SSID, numprobes). - * channel TLVs will be added past this for each scan command, preserving - * the TLVs that were previously added. - */ - *ppchantlvout = (struct mrvlietypes_chanlistparamset *) ptlvpos; - - if (puserscanin && puserscanin->chanlist[0].channumber) { - - lbs_deb_scan("Scan: Using supplied channel list\n"); - - for (chanidx = 0; - chanidx < WLAN_IOCTL_USER_SCAN_CHAN_MAX - && puserscanin->chanlist[chanidx].channumber; chanidx++) { - - channel = puserscanin->chanlist[chanidx].channumber; - (pscanchanlist + chanidx)->channumber = channel; - - radiotype = puserscanin->chanlist[chanidx].radiotype; - (pscanchanlist + chanidx)->radiotype = radiotype; - - scantype = puserscanin->chanlist[chanidx].scantype; - - if (scantype == CMD_SCAN_TYPE_PASSIVE) { - (pscanchanlist + - chanidx)->chanscanmode.passivescan = 1; - } else { - (pscanchanlist + - chanidx)->chanscanmode.passivescan = 0; - } - - if (puserscanin->chanlist[chanidx].scantime) { - scandur = - puserscanin->chanlist[chanidx].scantime; - } else { - if (scantype == CMD_SCAN_TYPE_PASSIVE) { - scandur = MRVDRV_PASSIVE_SCAN_CHAN_TIME; - } else { - scandur = MRVDRV_ACTIVE_SCAN_CHAN_TIME; - } - } - - (pscanchanlist + chanidx)->minscantime = - cpu_to_le16(scandur); - (pscanchanlist + chanidx)->maxscantime = - cpu_to_le16(scandur); - } - - /* Check if we are only scanning the current channel */ - if ((chanidx == 1) && (puserscanin->chanlist[0].channumber - == - priv->adapter->curbssparams.channel)) { - *pscancurrentonly = 1; - lbs_deb_scan("Scan: Scanning current channel only"); - } - - } else { - lbs_deb_scan("Scan: Creating full region channel list\n"); - wlan_scan_create_channel_list(priv, pscanchanlist, - *pfilteredscan); - } - -out: - return pscancfgout; + ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID); + ssid_tlv->header.len = cpu_to_le16(priv->scan_ssid_len); + memcpy(ssid_tlv->ssid, priv->scan_ssid, priv->scan_ssid_len); + return sizeof(ssid_tlv->header) + priv->scan_ssid_len; } -/** - * @brief Construct and send multiple scan config commands to the firmware +/* + * Add CHANLIST TLV of the form * - * Previous routines have created a wlan_scan_cmd_config with any requested - * TLVs. This function splits the channel TLV into maxchanperscan lists - * and sends the portion of the channel TLV along with the other TLVs - * to the wlan_cmd routines for execution in the firmware. + * TLV-ID CHANLIST 01 01 + * length 5b 00 + * channel 1 00 01 00 00 00 64 00 + * radio type 00 + * channel 01 + * scan type 00 + * min scan time 00 00 + * max scan time 64 00 + * channel 2 00 02 00 00 00 64 00 + * channel 3 00 03 00 00 00 64 00 + * channel 4 00 04 00 00 00 64 00 + * channel 5 00 05 00 00 00 64 00 + * channel 6 00 06 00 00 00 64 00 + * channel 7 00 07 00 00 00 64 00 + * channel 8 00 08 00 00 00 64 00 + * channel 9 00 09 00 00 00 64 00 + * channel 10 00 0a 00 00 00 64 00 + * channel 11 00 0b 00 00 00 64 00 + * channel 12 00 0c 00 00 00 64 00 + * channel 13 00 0d 00 00 00 64 00 * - * @param priv A pointer to wlan_private structure - * @param maxchanperscan Maximum number channels to be included in each - * scan command sent to firmware - * @param filteredscan Flag indicating whether or not a BSSID or SSID - * filter is being used for the firmware command - * scan command sent to firmware - * @param pscancfgout Scan configuration used for this scan. - * @param pchantlvout Pointer in the pscancfgout where the channel TLV - * should start. This is past any other TLVs that - * must be sent down in each firmware command. - * @param pscanchanlist List of channels to scan in maxchanperscan segments - * - * @return 0 or error return otherwise */ -static int wlan_scan_channel_list(wlan_private * priv, - int maxchanperscan, - u8 filteredscan, - struct wlan_scan_cmd_config * pscancfgout, - struct mrvlietypes_chanlistparamset * pchantlvout, - struct chanscanparamset * pscanchanlist, - const struct wlan_ioctl_user_scan_cfg * puserscanin, - int full_scan) +static int lbs_scan_add_chanlist_tlv(uint8_t *tlv, + struct chanscanparamset *chan_list, + int chan_count) { - struct chanscanparamset *ptmpchan; - struct chanscanparamset *pstartchan; - u8 scanband; - int doneearly; - int tlvidx; - int ret = 0; - int scanned = 0; - union iwreq_data wrqu; - - lbs_deb_enter(LBS_DEB_ASSOC); - - if (pscancfgout == 0 || pchantlvout == 0 || pscanchanlist == 0) { - lbs_deb_scan("Scan: Null detect: %p, %p, %p\n", - pscancfgout, pchantlvout, pscanchanlist); - return -1; - } - - pchantlvout->header.type = cpu_to_le16(TLV_TYPE_CHANLIST); - - /* Set the temp channel struct pointer to the start of the desired list */ - ptmpchan = pscanchanlist; - - if (priv->adapter->last_scanned_channel && !puserscanin) - ptmpchan += priv->adapter->last_scanned_channel; - - /* Loop through the desired channel list, sending a new firmware scan - * commands for each maxchanperscan channels (or for 1,6,11 individually - * if configured accordingly) - */ - while (ptmpchan->channumber) { - - tlvidx = 0; - pchantlvout->header.len = 0; - scanband = ptmpchan->radiotype; - pstartchan = ptmpchan; - doneearly = 0; - - /* Construct the channel TLV for the scan command. Continue to - * insert channel TLVs until: - * - the tlvidx hits the maximum configured per scan command - * - the next channel to insert is 0 (end of desired channel list) - * - doneearly is set (controlling individual scanning of 1,6,11) - */ - while (tlvidx < maxchanperscan && ptmpchan->channumber - && !doneearly && scanned < 2) { - - lbs_deb_scan( - "Scan: Chan(%3d), Radio(%d), mode(%d,%d), Dur(%d)\n", - ptmpchan->channumber, ptmpchan->radiotype, - ptmpchan->chanscanmode.passivescan, - ptmpchan->chanscanmode.disablechanfilt, - ptmpchan->maxscantime); - - /* Copy the current channel TLV to the command being prepared */ - memcpy(pchantlvout->chanscanparam + tlvidx, - ptmpchan, sizeof(pchantlvout->chanscanparam)); - - /* Increment the TLV header length by the size appended */ - /* 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 - * between the channel tlv pointer and the start of the - * tlv buffer. This compensates for any TLVs that were appended - * before the channel list. - */ - pscancfgout->tlvbufferlen = ((u8 *) pchantlvout - - pscancfgout->tlvbuffer); - - /* Add the size of the channel tlv header and the data length */ - pscancfgout->tlvbufferlen += - (sizeof(pchantlvout->header) - + le16_to_cpu(pchantlvout->header.len)); - - /* Increment the index to the channel tlv we are constructing */ - tlvidx++; - - doneearly = 0; + size_t size = sizeof(struct chanscanparamset) *chan_count; + struct mrvl_ie_chanlist_param_set *chan_tlv = (void *)tlv; - /* Stop the loop if the *current* channel is in the 1,6,11 set - * and we are not filtering on a BSSID or SSID. - */ - if (!filteredscan && (ptmpchan->channumber == 1 - || ptmpchan->channumber == 6 - || ptmpchan->channumber == 11)) { - doneearly = 1; - } - - /* Increment the tmp pointer to the next channel to be scanned */ - ptmpchan++; - scanned++; - - /* Stop the loop if the *next* channel is in the 1,6,11 set. - * This will cause it to be the only channel scanned on the next - * interation - */ - if (!filteredscan && (ptmpchan->channumber == 1 - || ptmpchan->channumber == 6 - || ptmpchan->channumber == 11)) { - doneearly = 1; - } - } - - /* 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; - } - -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; + chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST); + memcpy(chan_tlv->chanscanparam, chan_list, size); + chan_tlv->header.len = cpu_to_le16(size); + return sizeof(chan_tlv->header) + size; } -static void -clear_selected_scan_list_entries(wlan_adapter * adapter, - const struct wlan_ioctl_user_scan_cfg * scan_cfg) +/* + * Add RATES TLV of the form + * + * TLV-ID RATES 01 00 + * length 0e 00 + * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c + * + * The rates are in lbs_bg_rates[], but for the 802.11b + * rates the high bit isn't set. + */ +static int lbs_scan_add_rates_tlv(uint8_t *tlv) { - 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; + int i; + struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv; + + rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES); + tlv += sizeof(rate_tlv->header); + for (i = 0; i < MAX_RATES; i++) { + *tlv = lbs_bg_rates[i]; + if (*tlv == 0) + break; + /* This code makes sure that the 802.11b rates (1 MBit/s, 2 + MBit/s, 5.5 MBit/s and 11 MBit/s get's the high bit set. + Note that the values are MBit/s * 2, to mark them as + basic rates so that the firmware likes it better */ + if (*tlv == 0x02 || *tlv == 0x04 || + *tlv == 0x0b || *tlv == 0x16) + *tlv |= 0x80; + tlv++; } + rate_tlv->header.len = cpu_to_le16(i); + return sizeof(rate_tlv->header) + i; +} - if (!clear_ssid_flag && !clear_bssid_flag) - return; +/* + * Generate the CMD_802_11_SCAN command with the proper tlv + * for a bunch of channels. + */ +static int lbs_do_scan(struct lbs_private *priv, uint8_t bsstype, + struct chanscanparamset *chan_list, int chan_count) +{ + int ret = -ENOMEM; + struct cmd_ds_802_11_scan *scan_cmd; + uint8_t *tlv; /* pointer into our current, growing TLV storage area */ - mutex_lock(&adapter->lock); - list_for_each_entry_safe (bss, safe, &adapter->network_list, list) { - u32 clear = 0; + lbs_deb_enter_args(LBS_DEB_SCAN, "bsstype %d, chanlist[].chan %d, chan_count %d", + bsstype, chan_list ? chan_list[0].channumber : -1, + chan_count); - /* 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; + /* create the fixed part for scan command */ + scan_cmd = kzalloc(MAX_SCAN_CFG_ALLOC, GFP_KERNEL); + if (scan_cmd == NULL) + goto out; - /* Check for a BSSID match */ - if ( clear_bssid_flag - && !compare_ether_addr(bss->bssid, scan_cfg->bssid)) - clear = 1; + tlv = scan_cmd->tlvbuffer; + /* TODO: do we need to scan for a specific BSSID? + memcpy(scan_cmd->bssid, priv->scan_bssid, ETH_ALEN); */ + scan_cmd->bsstype = bsstype; + + /* add TLVs */ + if (priv->scan_ssid_len) + tlv += lbs_scan_add_ssid_tlv(priv, tlv); + if (chan_list && chan_count) + tlv += lbs_scan_add_chanlist_tlv(tlv, chan_list, chan_count); + tlv += lbs_scan_add_rates_tlv(tlv); + + /* This is the final data we are about to send */ + scan_cmd->hdr.size = cpu_to_le16(tlv - (uint8_t *)scan_cmd); + lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd, + sizeof(*scan_cmd)); + lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer, + tlv - scan_cmd->tlvbuffer); + + ret = __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr, + le16_to_cpu(scan_cmd->hdr.size), + lbs_ret_80211_scan, 0); - if (clear) { - list_move_tail (&bss->list, &adapter->network_free_list); - clear_bss_descriptor(bss); - } - } - mutex_unlock(&adapter->lock); +out: + kfree(scan_cmd); + lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); + return ret; } - /** * @brief Internal function used to start a scan based on an input config * @@ -743,183 +516,187 @@ clear_selected_scan_list_entries(wlan_adapter * adapter, * order to send the appropriate scan commands to firmware to populate or * update the internal driver scan table * - * @param priv A pointer to wlan_private structure - * @param puserscanin Pointer to the input configuration for the requested - * scan. + * @param priv A pointer to struct lbs_private structure + * @param full_scan Do a full-scan (blocking) * * @return 0 or < 0 if error */ -int wlan_scan_networks(wlan_private * priv, - const struct wlan_ioctl_user_scan_cfg * puserscanin, - int full_scan) +int lbs_scan_networks(struct lbs_private *priv, int full_scan) { - wlan_adapter * adapter = priv->adapter; - struct mrvlietypes_chanlistparamset *pchantlvout; - struct chanscanparamset * scan_chan_list = NULL; - struct wlan_scan_cmd_config * scan_cfg = NULL; - u8 filteredscan; - u8 scancurrentchanonly; - int maxchanperscan; - int ret; + int ret = -ENOMEM; + struct chanscanparamset *chan_list; + struct chanscanparamset *curr_chans; + int chan_count; + uint8_t bsstype = CMD_BSS_TYPE_ANY; + int numchannels = MRVDRV_CHANNELS_PER_SCAN_CMD; + union iwreq_data wrqu; #ifdef CONFIG_LIBERTAS_DEBUG - struct bss_descriptor * iter_bss; + struct bss_descriptor *iter; int i = 0; + DECLARE_SSID_BUF(ssid); #endif - lbs_deb_enter(LBS_DEB_ASSOC); + lbs_deb_enter_args(LBS_DEB_SCAN, "full_scan %d", full_scan); - scan_chan_list = kzalloc(sizeof(struct chanscanparamset) * - WLAN_IOCTL_USER_SCAN_CHAN_MAX, GFP_KERNEL); - if (scan_chan_list == NULL) { - ret = -ENOMEM; + /* Cancel any partial outstanding partial scans if this scan + * is a full scan. + */ + if (full_scan && delayed_work_pending(&priv->scan_work)) + cancel_delayed_work(&priv->scan_work); + + /* User-specified bsstype or channel list + TODO: this can be implemented if some user-space application + need the feature. Formerly, it was accessible from debugfs, + but then nowhere used. + if (user_cfg) { + if (user_cfg->bsstype) + bsstype = user_cfg->bsstype; + } */ + + lbs_deb_scan("numchannels %d, bsstype %d\n", numchannels, bsstype); + + /* Create list of channels to scan */ + chan_list = kzalloc(sizeof(struct chanscanparamset) * + LBS_IOCTL_USER_SCAN_CHAN_MAX, GFP_KERNEL); + if (!chan_list) { + lbs_pr_alert("SCAN: chan_list empty\n"); goto out; } - scan_cfg = wlan_scan_setup_scan_config(priv, - puserscanin, - &pchantlvout, - scan_chan_list, - &maxchanperscan, - &filteredscan, - &scancurrentchanonly); - if (scan_cfg == NULL) { - ret = -ENOMEM; - goto out; + /* We want to scan all channels */ + chan_count = lbs_scan_create_channel_list(priv, chan_list); + + netif_stop_queue(priv->dev); + netif_carrier_off(priv->dev); + if (priv->mesh_dev) { + netif_stop_queue(priv->mesh_dev); + netif_carrier_off(priv->mesh_dev); } - clear_selected_scan_list_entries(adapter, puserscanin); + /* Prepare to continue an interrupted scan */ + lbs_deb_scan("chan_count %d, scan_channel %d\n", + chan_count, priv->scan_channel); + curr_chans = chan_list; + /* advance channel list by already-scanned-channels */ + if (priv->scan_channel > 0) { + curr_chans += priv->scan_channel; + chan_count -= priv->scan_channel; + } + + /* Send scan command(s) + * numchannels contains the number of channels we should maximally scan + * chan_count is the total number of channels to scan + */ - /* Keep the data path active if we are only scanning our current channel */ - if (!scancurrentchanonly) { - netif_stop_queue(priv->dev); - netif_carrier_off(priv->dev); - if (priv->mesh_dev) { - netif_stop_queue(priv->mesh_dev); - netif_carrier_off(priv->mesh_dev); + while (chan_count) { + int to_scan = min(numchannels, chan_count); + lbs_deb_scan("scanning %d of %d channels\n", + to_scan, chan_count); + ret = lbs_do_scan(priv, bsstype, curr_chans, + to_scan); + if (ret) { + lbs_pr_err("SCAN_CMD failed\n"); + goto out2; + } + curr_chans += to_scan; + chan_count -= to_scan; + + /* somehow schedule the next part of the scan */ + if (chan_count && !full_scan && + !priv->surpriseremoved) { + /* -1 marks just that we're currently scanning */ + if (priv->scan_channel < 0) + priv->scan_channel = to_scan; + else + priv->scan_channel += to_scan; + cancel_delayed_work(&priv->scan_work); + queue_delayed_work(priv->work_thread, &priv->scan_work, + msecs_to_jiffies(300)); + /* skip over GIWSCAN event */ + goto out; } - } - ret = wlan_scan_channel_list(priv, - maxchanperscan, - filteredscan, - scan_cfg, - pchantlvout, - scan_chan_list, - puserscanin, - full_scan); + } + memset(&wrqu, 0, sizeof(union iwreq_data)); + wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL); #ifdef CONFIG_LIBERTAS_DEBUG /* Dump the scan table */ - mutex_lock(&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); + mutex_lock(&priv->lock); + lbs_deb_scan("scan table:\n"); + list_for_each_entry(iter, &priv->network_list, list) + lbs_deb_scan("%02d: BSSID %pM, RSSI %d, SSID '%s'\n", + i++, iter->bssid, iter->rssi, + print_ssid(ssid, iter->ssid, iter->ssid_len)); + mutex_unlock(&priv->lock); #endif - if (priv->adapter->connect_status == LIBERTAS_CONNECTED) { +out2: + priv->scan_channel = 0; + +out: + if (priv->connect_status == LBS_CONNECTED) { netif_carrier_on(priv->dev); - netif_wake_queue(priv->dev); - if (priv->mesh_dev) { - netif_carrier_on(priv->mesh_dev); + if (!priv->tx_pending_len) + netif_wake_queue(priv->dev); + } + if (priv->mesh_dev && (priv->mesh_connect_status == LBS_CONNECTED)) { + netif_carrier_on(priv->mesh_dev); + if (!priv->tx_pending_len) netif_wake_queue(priv->mesh_dev); - } } - -out: - if (scan_cfg) - kfree(scan_cfg); - - if (scan_chan_list) - kfree(scan_chan_list); + kfree(chan_list); lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); return ret; } -/** - * @brief Inspect the scan response buffer for pointers to expected TLVs - * - * TLVs can be included at the end of the scan response BSS information. - * Parse the data in the buffer for pointers to TLVs that can potentially - * be passed back in the response - * - * @param ptlv Pointer to the start of the TLV buffer to parse - * @param tlvbufsize size of the TLV buffer - * @param ptsftlv Output parameter: Pointer to the TSF TLV if found - * - * @return void - */ -static -void wlan_ret_802_11_scan_get_tlv_ptrs(struct mrvlietypes_data * ptlv, - int tlvbufsize, - struct mrvlietypes_tsftimestamp ** ptsftlv) +void lbs_scan_worker(struct work_struct *work) { - struct mrvlietypes_data *pcurrenttlv; - int tlvbufleft; - u16 tlvtype; - u16 tlvlen; - - pcurrenttlv = ptlv; - tlvbufleft = tlvbufsize; - *ptsftlv = NULL; + struct lbs_private *priv = + container_of(work, struct lbs_private, scan_work.work); - lbs_deb_scan("SCAN_RESP: tlvbufsize = %d\n", tlvbufsize); - lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RESP: TLV Buf", (u8 *) ptlv, tlvbufsize); + lbs_deb_enter(LBS_DEB_SCAN); + lbs_scan_networks(priv, 0); + lbs_deb_leave(LBS_DEB_SCAN); +} - while (tlvbufleft >= sizeof(struct mrvlietypesheader)) { - tlvtype = le16_to_cpu(pcurrenttlv->header.type); - tlvlen = le16_to_cpu(pcurrenttlv->header.len); - switch (tlvtype) { - case TLV_TYPE_TSFTIMESTAMP: - *ptsftlv = (struct mrvlietypes_tsftimestamp *) pcurrenttlv; - break; - - default: - lbs_deb_scan("SCAN_RESP: Unhandled TLV = %d\n", - tlvtype); - /* Give up, this seems corrupted */ - return; - } /* switch */ - - tlvbufleft -= (sizeof(ptlv->header) + tlvlen); - pcurrenttlv = - (struct mrvlietypes_data *) (pcurrenttlv->Data + tlvlen); - } /* while */ -} +/*********************************************************************/ +/* */ +/* Result interpretation */ +/* */ +/*********************************************************************/ /** * @brief Interpret a BSS scan response returned from the firmware * * Parse the various fixed fields and IEs passed back for a a BSS probe - * response or beacon from the scan command. Record information as needed - * in the scan table struct bss_descriptor for that entry. + * response or beacon from the scan command. Record information as needed + * in the scan table struct bss_descriptor for that entry. * * @param bss Output parameter: Pointer to the BSS Entry * * @return 0 or -1 */ -static int libertas_process_bss(struct bss_descriptor * bss, - u8 ** pbeaconinfo, int *bytesleft) +static int lbs_process_bss(struct bss_descriptor *bss, + uint8_t **pbeaconinfo, int *bytesleft) { - struct ieeetypes_fhparamset *pFH; - struct ieeetypes_dsparamset *pDS; - struct ieeetypes_cfparamset *pCF; - struct ieeetypes_ibssparamset *pibss; - struct ieeetypes_countryinfoset *pcountryinfo; - u8 *pos, *end, *p; - u8 n_ex_rates = 0, got_basic_rates = 0, n_basic_rates = 0; - u16 beaconsize = 0; + struct ieee_ie_fh_param_set *fh; + struct ieee_ie_ds_param_set *ds; + struct ieee_ie_cf_param_set *cf; + struct ieee_ie_ibss_param_set *ibss; + DECLARE_SSID_BUF(ssid); + uint8_t *pos, *end, *p; + uint8_t n_ex_rates = 0, got_basic_rates = 0, n_basic_rates = 0; + uint16_t beaconsize = 0; int ret; - lbs_deb_enter(LBS_DEB_ASSOC); + lbs_deb_enter(LBS_DEB_SCAN); if (*bytesleft >= sizeof(beaconsize)) { /* Extract & convert beacon size from the command buffer */ - beaconsize = le16_to_cpup((void *)*pbeaconinfo); + beaconsize = get_unaligned_le16(*pbeaconinfo); *bytesleft -= sizeof(beaconsize); *pbeaconinfo += sizeof(beaconsize); } @@ -927,7 +704,8 @@ static int libertas_process_bss(struct bss_descriptor * bss, if (beaconsize == 0 || beaconsize > *bytesleft) { *pbeaconinfo += *bytesleft; *bytesleft = 0; - return -1; + ret = -1; + goto done; } /* Initialize the current working beacon pointer for this BSS iteration */ @@ -939,12 +717,13 @@ static int libertas_process_bss(struct bss_descriptor * bss, *bytesleft -= beaconsize; memcpy(bss->bssid, pos, ETH_ALEN); - lbs_deb_scan("process_bss: AP BSSID " MAC_FMT "\n", MAC_ARG(bss->bssid)); + lbs_deb_scan("process_bss: BSSID %pM\n", bss->bssid); pos += ETH_ALEN; if ((end - pos) < 12) { lbs_deb_scan("process_bss: Not enough bytes left\n"); - return -1; + ret = -1; + goto done; } /* @@ -954,164 +733,143 @@ static int libertas_process_bss(struct bss_descriptor * bss, /* RSSI is 1 byte long */ bss->rssi = *pos; - lbs_deb_scan("process_bss: RSSI=%02X\n", *pos); + lbs_deb_scan("process_bss: RSSI %d\n", *pos); pos++; /* time stamp is 8 bytes long */ - bss->timestamp = le64_to_cpup((void *) pos); pos += 8; /* beacon interval is 2 bytes long */ - bss->beaconperiod = le16_to_cpup((void *) pos); + bss->beaconperiod = get_unaligned_le16(pos); pos += 2; /* capability information is 2 bytes long */ - bss->capability = le16_to_cpup((void *) pos); - lbs_deb_scan("process_bss: capabilities = 0x%4X\n", bss->capability); + bss->capability = get_unaligned_le16(pos); + lbs_deb_scan("process_bss: capabilities 0x%04x\n", bss->capability); pos += 2; if (bss->capability & WLAN_CAPABILITY_PRIVACY) - lbs_deb_scan("process_bss: AP WEP enabled\n"); + lbs_deb_scan("process_bss: WEP enabled\n"); if (bss->capability & WLAN_CAPABILITY_IBSS) bss->mode = IW_MODE_ADHOC; else bss->mode = IW_MODE_INFRA; /* rest of the current buffer are IE's */ - lbs_deb_scan("process_bss: IE length for this AP = %zd\n", end - pos); + lbs_deb_scan("process_bss: IE len %zd\n", end - pos); lbs_deb_hex(LBS_DEB_SCAN, "process_bss: IE info", pos, end - pos); /* process variable IE */ while (pos <= end - 2) { - struct ieee80211_info_element * elem = - (struct ieee80211_info_element *) pos; - - if (pos + elem->len > end) { + if (pos + pos[1] > end) { lbs_deb_scan("process_bss: error in processing IE, " - "bytes left < IE length\n"); + "bytes left < IE length\n"); break; } - switch (elem->id) { - case MFIE_TYPE_SSID: - bss->ssid_len = elem->len; - memcpy(bss->ssid, elem->data, elem->len); - lbs_deb_scan("ssid '%s', ssid length %u\n", - escape_essid(bss->ssid, bss->ssid_len), + switch (pos[0]) { + case WLAN_EID_SSID: + bss->ssid_len = min_t(int, IEEE80211_MAX_SSID_LEN, pos[1]); + memcpy(bss->ssid, pos + 2, bss->ssid_len); + lbs_deb_scan("got SSID IE: '%s', len %u\n", + print_ssid(ssid, bss->ssid, bss->ssid_len), bss->ssid_len); break; - case MFIE_TYPE_RATES: - n_basic_rates = min_t(u8, MAX_RATES, elem->len); - memcpy(bss->rates, elem->data, n_basic_rates); + case WLAN_EID_SUPP_RATES: + n_basic_rates = min_t(uint8_t, MAX_RATES, pos[1]); + memcpy(bss->rates, pos + 2, n_basic_rates); got_basic_rates = 1; + lbs_deb_scan("got RATES IE\n"); break; - case MFIE_TYPE_FH_SET: - pFH = (struct ieeetypes_fhparamset *) pos; - memmove(&bss->phyparamset.fhparamset, pFH, - sizeof(struct ieeetypes_fhparamset)); -#if 0 /* I think we can store these LE */ - bss->phyparamset.fhparamset.dwelltime - = le16_to_cpu(bss->phyparamset.fhparamset.dwelltime); -#endif - break; - - case MFIE_TYPE_DS_SET: - pDS = (struct ieeetypes_dsparamset *) pos; - bss->channel = pDS->currentchan; - memcpy(&bss->phyparamset.dsparamset, pDS, - sizeof(struct ieeetypes_dsparamset)); + case WLAN_EID_FH_PARAMS: + fh = (struct ieee_ie_fh_param_set *) pos; + memcpy(&bss->phy.fh, fh, sizeof(*fh)); + lbs_deb_scan("got FH IE\n"); break; - case MFIE_TYPE_CF_SET: - pCF = (struct ieeetypes_cfparamset *) pos; - memcpy(&bss->ssparamset.cfparamset, pCF, - sizeof(struct ieeetypes_cfparamset)); + case WLAN_EID_DS_PARAMS: + ds = (struct ieee_ie_ds_param_set *) pos; + bss->channel = ds->channel; + memcpy(&bss->phy.ds, ds, sizeof(*ds)); + lbs_deb_scan("got DS IE, channel %d\n", bss->channel); break; - case MFIE_TYPE_IBSS_SET: - pibss = (struct ieeetypes_ibssparamset *) pos; - bss->atimwindow = le32_to_cpu(pibss->atimwindow); - memmove(&bss->ssparamset.ibssparamset, pibss, - sizeof(struct ieeetypes_ibssparamset)); -#if 0 - bss->ssparamset.ibssparamset.atimwindow - = le16_to_cpu(bss->ssparamset.ibssparamset.atimwindow); -#endif + case WLAN_EID_CF_PARAMS: + cf = (struct ieee_ie_cf_param_set *) pos; + memcpy(&bss->ss.cf, cf, sizeof(*cf)); + lbs_deb_scan("got CF IE\n"); break; - case MFIE_TYPE_COUNTRY: - pcountryinfo = (struct ieeetypes_countryinfoset *) pos; - if (pcountryinfo->len < sizeof(pcountryinfo->countrycode) - || pcountryinfo->len > 254) { - lbs_deb_scan("process_bss: 11D- Err " - "CountryInfo len =%d min=%zd max=254\n", - pcountryinfo->len, - sizeof(pcountryinfo->countrycode)); - ret = -1; - goto done; - } - - memcpy(&bss->countryinfo, - pcountryinfo, pcountryinfo->len + 2); - lbs_deb_hex(LBS_DEB_SCAN, "process_bss: 11d countryinfo", - (u8 *) pcountryinfo, - (u32) (pcountryinfo->len + 2)); + case WLAN_EID_IBSS_PARAMS: + ibss = (struct ieee_ie_ibss_param_set *) pos; + bss->atimwindow = ibss->atimwindow; + memcpy(&bss->ss.ibss, ibss, sizeof(*ibss)); + lbs_deb_scan("got IBSS IE\n"); break; - case MFIE_TYPE_RATES_EX: + case WLAN_EID_EXT_SUPP_RATES: /* only process extended supported rate if data rate is * already found. Data rate IE should come before * extended supported rate IE */ - if (!got_basic_rates) + lbs_deb_scan("got RATESEX IE\n"); + if (!got_basic_rates) { + lbs_deb_scan("... but ignoring it\n"); break; + } - n_ex_rates = elem->len; + n_ex_rates = pos[1]; if (n_basic_rates + n_ex_rates > MAX_RATES) n_ex_rates = MAX_RATES - n_basic_rates; p = bss->rates + n_basic_rates; - memcpy(p, elem->data, n_ex_rates); + memcpy(p, pos + 2, n_ex_rates); break; - case MFIE_TYPE_GENERIC: - if (elem->len >= 4 && - elem->data[0] == 0x00 && - elem->data[1] == 0x50 && - elem->data[2] == 0xf2 && - elem->data[3] == 0x01) { - bss->wpa_ie_len = min(elem->len + 2, - MAX_WPA_IE_LEN); - memcpy(bss->wpa_ie, elem, bss->wpa_ie_len); - lbs_deb_hex(LBS_DEB_SCAN, "process_bss: WPA IE", bss->wpa_ie, - elem->len); - } else if (elem->len >= MARVELL_MESH_IE_LENGTH && - elem->data[0] == 0x00 && - elem->data[1] == 0x50 && - elem->data[2] == 0x43 && - elem->data[3] == 0x04) { + case WLAN_EID_GENERIC: + if (pos[1] >= 4 && + pos[2] == 0x00 && pos[3] == 0x50 && + pos[4] == 0xf2 && pos[5] == 0x01) { + bss->wpa_ie_len = min(pos[1] + 2, MAX_WPA_IE_LEN); + memcpy(bss->wpa_ie, pos, bss->wpa_ie_len); + lbs_deb_scan("got WPA IE\n"); + lbs_deb_hex(LBS_DEB_SCAN, "WPA IE", bss->wpa_ie, + bss->wpa_ie_len); + } else if (pos[1] >= MARVELL_MESH_IE_LENGTH && + pos[2] == 0x00 && pos[3] == 0x50 && + pos[4] == 0x43 && pos[5] == 0x04) { + lbs_deb_scan("got mesh IE\n"); bss->mesh = 1; + } else { + lbs_deb_scan("got generic IE: %02x:%02x:%02x:%02x, len %d\n", + pos[2], pos[3], + pos[4], pos[5], + pos[1]); } break; - case MFIE_TYPE_RSN: - bss->rsn_ie_len = min(elem->len + 2, MAX_WPA_IE_LEN); - memcpy(bss->rsn_ie, elem, bss->rsn_ie_len); - lbs_deb_hex(LBS_DEB_SCAN, "process_bss: RSN_IE", bss->rsn_ie, elem->len); + case WLAN_EID_RSN: + lbs_deb_scan("got RSN IE\n"); + bss->rsn_ie_len = min(pos[1] + 2, MAX_WPA_IE_LEN); + memcpy(bss->rsn_ie, pos, bss->rsn_ie_len); + lbs_deb_hex(LBS_DEB_SCAN, "process_bss: RSN_IE", + bss->rsn_ie, bss->rsn_ie_len); break; default: + lbs_deb_scan("got IE 0x%04x, len %d\n", + pos[0], pos[1]); break; } - pos += elem->len + 2; + pos += pos[1] + 2; } /* Timestamp */ bss->last_scanned = jiffies; - libertas_unset_basic_rate_flags(bss->rates, sizeof(bss->rates)); + lbs_unset_basic_rate_flags(bss->rates, sizeof(bss->rates)); ret = 0; @@ -1121,317 +879,99 @@ done: } /** - * @brief Compare two SSIDs + * @brief Send a scan command for all available channels filtered on a spec * - * @param ssid1 A pointer to ssid to compare - * @param ssid2 A pointer to ssid to compare + * Used in association code and from debugfs * - * @return 0--ssid is same, otherwise is different - */ -int libertas_ssid_cmp(u8 *ssid1, u8 ssid1_len, u8 *ssid2, u8 ssid2_len) -{ - if (ssid1_len != ssid2_len) - return -1; - - return memcmp(ssid1, ssid2, ssid1_len); -} - -/** - * @brief This function finds a specific compatible BSSID in the scan list + * @param priv A pointer to struct lbs_private structure + * @param ssid A pointer to the SSID to scan for + * @param ssid_len Length of the SSID * - * @param adapter A pointer to wlan_adapter - * @param bssid BSSID to find in the scan list - * @param mode Network mode: Infrastructure or IBSS - * - * @return index in BSSID list, or error return code (< 0) + * @return 0-success, otherwise fail */ -struct bss_descriptor * libertas_find_bssid_in_list(wlan_adapter * adapter, - u8 * bssid, u8 mode) +int lbs_send_specific_ssid_scan(struct lbs_private *priv, uint8_t *ssid, + uint8_t ssid_len) { - struct bss_descriptor * iter_bss; - struct bss_descriptor * found_bss = NULL; - - if (!bssid) - return NULL; - - lbs_deb_hex(LBS_DEB_SCAN, "looking for", - bssid, ETH_ALEN); - - /* Look through the scan table for a compatible match. The loop will - * continue past a matched bssid that is not compatible in case there - * is an AP with multiple SSIDs assigned to the same BSSID - */ - mutex_lock(&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); + DECLARE_SSID_BUF(ssid_buf); + int ret = 0; - return found_bss; -} + lbs_deb_enter_args(LBS_DEB_SCAN, "SSID '%s'\n", + print_ssid(ssid_buf, ssid, ssid_len)); -/** - * @brief This function finds ssid in ssid list. - * - * @param adapter A pointer to wlan_adapter - * @param ssid SSID to find in the list - * @param bssid BSSID to qualify the SSID selection (if provided) - * @param mode Network mode: Infrastructure or IBSS - * - * @return index in BSSID list - */ -struct bss_descriptor * libertas_find_ssid_in_list(wlan_adapter * adapter, - u8 *ssid, u8 ssid_len, u8 * bssid, u8 mode, - int channel) -{ - u8 bestrssi = 0; - struct bss_descriptor * iter_bss = NULL; - struct bss_descriptor * found_bss = NULL; - struct bss_descriptor * tmp_oldest = NULL; - - 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 (!ssid_len) + goto out; - if (bssid) { - /* Found requested BSSID */ - found_bss = iter_bss; - goto out; - } + memcpy(priv->scan_ssid, ssid, ssid_len); + priv->scan_ssid_len = ssid_len; - 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; - } + lbs_scan_networks(priv, 1); + if (priv->surpriseremoved) { + ret = -1; + goto out; } out: - mutex_unlock(&adapter->lock); - return found_bss; -} - -/** - * @brief This function finds the best SSID in the Scan List - * - * Search the scan table for the best SSID that also matches the current - * adapter network preference (infrastructure or adhoc) - * - * @param adapter A pointer to wlan_adapter - * - * @return index in BSSID list - */ -static struct bss_descriptor * libertas_find_best_ssid_in_list(wlan_adapter * adapter, - u8 mode) -{ - u8 bestrssi = 0; - struct bss_descriptor * iter_bss; - struct bss_descriptor * best_bss = NULL; - - mutex_lock(&adapter->lock); - - 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, iter_bss, mode)) - break; - if (SCAN_RSSI(iter_bss->rssi) <= bestrssi) - break; - bestrssi = SCAN_RSSI(iter_bss->rssi); - best_bss = iter_bss; - break; - case IW_MODE_AUTO: - default: - if (SCAN_RSSI(iter_bss->rssi) <= bestrssi) - break; - bestrssi = SCAN_RSSI(iter_bss->rssi); - best_bss = iter_bss; - break; - } - } - - mutex_unlock(&adapter->lock); - return best_bss; -} - -/** - * @brief Find the AP with specific ssid in the scan list - * - * @param priv A pointer to wlan_private structure - * @param pSSID A pointer to AP's ssid - * - * @return 0--success, otherwise--fail - */ -int libertas_find_best_network_ssid(wlan_private * priv, - u8 *out_ssid, u8 *out_ssid_len, u8 preferred_mode, u8 *out_mode) -{ - wlan_adapter *adapter = priv->adapter; - int ret = -1; - struct bss_descriptor * found; - - lbs_deb_enter(LBS_DEB_ASSOC); - - wlan_scan_networks(priv, NULL, 1); - if (adapter->surpriseremoved) - return -1; - - wait_event_interruptible(adapter->cmd_pending, !adapter->nr_cmd_pending); - - 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; - } - lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); return ret; } -/** - * @brief Scan Network - * - * @param dev A pointer to net_device structure - * @param info A pointer to iw_request_info structure - * @param vwrq A pointer to iw_param structure - * @param extra A pointer to extra data buf - * - * @return 0 --success, otherwise fail - */ -int libertas_set_scan(struct net_device *dev, struct iw_request_info *info, - struct iw_param *vwrq, char *extra) -{ - wlan_private *priv = dev->priv; - wlan_adapter *adapter = priv->adapter; - lbs_deb_enter(LBS_DEB_SCAN); - wlan_scan_networks(priv, NULL, 0); - if (adapter->surpriseremoved) - return -1; +/*********************************************************************/ +/* */ +/* Support for Wireless Extensions */ +/* */ +/*********************************************************************/ - lbs_deb_leave(LBS_DEB_SCAN); - return 0; -} -/** - * @brief Send a scan command for all available channels filtered on a spec - * - * @param priv A pointer to wlan_private structure - * @param prequestedssid A pointer to AP's ssid - * @param keeppreviousscan Flag used to save/clear scan table before scan - * - * @return 0-success, otherwise fail - */ -int libertas_send_specific_ssid_scan(wlan_private * priv, - u8 *ssid, u8 ssid_len, u8 clear_ssid) -{ - wlan_adapter *adapter = priv->adapter; - struct wlan_ioctl_user_scan_cfg scancfg; - int ret = 0; +#define MAX_CUSTOM_LEN 64 - lbs_deb_enter(LBS_DEB_ASSOC); - - 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; - - wlan_scan_networks(priv, &scancfg, 1); - if (adapter->surpriseremoved) - return -1; - wait_event_interruptible(adapter->cmd_pending, !adapter->nr_cmd_pending); - -out: - lbs_deb_leave(LBS_DEB_ASSOC); - return ret; -} - -static inline char *libertas_translate_scan(wlan_private *priv, - char *start, char *stop, - struct bss_descriptor *bss) +static inline char *lbs_translate_scan(struct lbs_private *priv, + struct iw_request_info *info, + char *start, char *stop, + struct bss_descriptor *bss) { - wlan_adapter *adapter = priv->adapter; struct chan_freq_power *cfp; char *current_val; /* For rates */ struct iw_event iwe; /* Temporary buffer */ int j; -#define PERFECT_RSSI ((u8)50) -#define WORST_RSSI ((u8)0) -#define RSSI_DIFF ((u8)(PERFECT_RSSI - WORST_RSSI)) - u8 rssi; +#define PERFECT_RSSI ((uint8_t)50) +#define WORST_RSSI ((uint8_t)0) +#define RSSI_DIFF ((uint8_t)(PERFECT_RSSI - WORST_RSSI)) + uint8_t rssi; + + lbs_deb_enter(LBS_DEB_SCAN); - cfp = libertas_find_cfp_by_band_and_channel(adapter, 0, bss->channel); + cfp = lbs_find_cfp_by_band_and_channel(priv, 0, bss->channel); if (!cfp) { lbs_deb_scan("Invalid channel number %d\n", bss->channel); - return NULL; + start = NULL; + goto out; } - /* First entry *MUST* be the AP BSSID */ + /* First entry *MUST* be the BSSID */ iwe.cmd = SIOCGIWAP; iwe.u.ap_addr.sa_family = ARPHRD_ETHER; memcpy(iwe.u.ap_addr.sa_data, &bss->bssid, ETH_ALEN); - start = iwe_stream_add_event(start, stop, &iwe, IW_EV_ADDR_LEN); + start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_ADDR_LEN); /* SSID */ iwe.cmd = SIOCGIWESSID; iwe.u.data.flags = 1; - iwe.u.data.length = min((u32) bss->ssid_len, (u32) IW_ESSID_MAX_SIZE); - start = iwe_stream_add_point(start, stop, &iwe, bss->ssid); + iwe.u.data.length = min((uint32_t) bss->ssid_len, (uint32_t) IEEE80211_MAX_SSID_LEN); + start = iwe_stream_add_point(info, start, stop, &iwe, bss->ssid); /* Mode */ iwe.cmd = SIOCGIWMODE; iwe.u.mode = bss->mode; - start = iwe_stream_add_event(start, stop, &iwe, IW_EV_UINT_LEN); + start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_UINT_LEN); /* Frequency */ iwe.cmd = SIOCGIWFREQ; iwe.u.freq.m = (long)cfp->freq * 100000; iwe.u.freq.e = 1; - start = iwe_stream_add_event(start, stop, &iwe, IW_EV_FREQ_LEN); + start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_FREQ_LEN); /* Add quality statistics */ iwe.cmd = IWEVQUAL; @@ -1440,34 +980,32 @@ static inline char *libertas_translate_scan(wlan_private *priv, 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); + (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) { + if (priv->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]); + iwe.u.qual.noise = CAL_NF(priv->NF[TYPE_BEACON][TYPE_NOAVG]); } /* Locally created ad-hoc BSSs won't have beacons if this is the * only station in the adhoc network; so get signal strength * from receive statistics. */ - if ((adapter->mode == IW_MODE_ADHOC) - && adapter->adhoccreate - && !libertas_ssid_cmp(adapter->curbssparams.ssid, - adapter->curbssparams.ssid_len, - bss->ssid, bss->ssid_len)) { + if ((priv->mode == IW_MODE_ADHOC) && priv->adhoccreate + && !lbs_ssid_cmp(priv->curbssparams.ssid, + priv->curbssparams.ssid_len, + bss->ssid, bss->ssid_len)) { int snr, nf; - snr = adapter->SNR[TYPE_RXPD][TYPE_AVG] / AVG_SCALE; - nf = adapter->NF[TYPE_RXPD][TYPE_AVG] / AVG_SCALE; + snr = priv->SNR[TYPE_RXPD][TYPE_AVG] / AVG_SCALE; + nf = priv->NF[TYPE_RXPD][TYPE_AVG] / AVG_SCALE; iwe.u.qual.level = CAL_RSSI(snr, nf); } - start = iwe_stream_add_event(start, stop, &iwe, IW_EV_QUAL_LEN); + start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_QUAL_LEN); /* Add encryption capability */ iwe.cmd = SIOCGIWENCODE; @@ -1477,32 +1015,31 @@ static inline char *libertas_translate_scan(wlan_private *priv, iwe.u.data.flags = IW_ENCODE_DISABLED; } iwe.u.data.length = 0; - start = iwe_stream_add_point(start, stop, &iwe, bss->ssid); + start = iwe_stream_add_point(info, start, stop, &iwe, bss->ssid); - current_val = start + IW_EV_LCP_LEN; + current_val = start + iwe_stream_lcp_len(info); iwe.cmd = SIOCGIWRATE; iwe.u.bitrate.fixed = 0; iwe.u.bitrate.disabled = 0; iwe.u.bitrate.value = 0; - for (j = 0; bss->rates[j] && (j < sizeof(bss->rates)); j++) { + for (j = 0; j < ARRAY_SIZE(bss->rates) && bss->rates[j]; j++) { /* Bit rate given in 500 kb/s units */ iwe.u.bitrate.value = bss->rates[j] * 500000; - current_val = iwe_stream_add_value(start, current_val, - stop, &iwe, IW_EV_PARAM_LEN); + current_val = iwe_stream_add_value(info, 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) { + if ((bss->mode == IW_MODE_ADHOC) && priv->adhoccreate + && !lbs_ssid_cmp(priv->curbssparams.ssid, + priv->curbssparams.ssid_len, + bss->ssid, bss->ssid_len)) { iwe.u.bitrate.value = 22 * 500000; - current_val = iwe_stream_add_value(start, current_val, - stop, &iwe, IW_EV_PARAM_LEN); + current_val = iwe_stream_add_value(info, start, current_val, + stop, &iwe, IW_EV_PARAM_LEN); } /* Check if we added any event */ - if((current_val - start) > IW_EV_LCP_LEN) + if ((current_val - start) > iwe_stream_lcp_len(info)) start = current_val; memset(&iwe, 0, sizeof(iwe)); @@ -1511,7 +1048,7 @@ static inline char *libertas_translate_scan(wlan_private *priv, 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); + start = iwe_stream_add_point(info, start, stop, &iwe, buf); } memset(&iwe, 0, sizeof(iwe)); @@ -1520,14 +1057,92 @@ static inline char *libertas_translate_scan(wlan_private *priv, 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); + start = iwe_stream_add_point(info, start, stop, &iwe, buf); + } + + if (bss->mesh) { + char custom[MAX_CUSTOM_LEN]; + char *p = custom; + + iwe.cmd = IWEVCUSTOM; + p += snprintf(p, MAX_CUSTOM_LEN, "mesh-type: olpc"); + iwe.u.data.length = p - custom; + if (iwe.u.data.length) + start = iwe_stream_add_point(info, start, stop, + &iwe, custom); } +out: + lbs_deb_leave_args(LBS_DEB_SCAN, "start %p", start); return start; } + +/** + * @brief Handle Scan Network ioctl + * + * @param dev A pointer to net_device structure + * @param info A pointer to iw_request_info structure + * @param vwrq A pointer to iw_param structure + * @param extra A pointer to extra data buf + * + * @return 0 --success, otherwise fail + */ +int lbs_set_scan(struct net_device *dev, struct iw_request_info *info, + union iwreq_data *wrqu, char *extra) +{ + DECLARE_SSID_BUF(ssid); + struct lbs_private *priv = dev->ml_priv; + int ret = 0; + + lbs_deb_enter(LBS_DEB_WEXT); + + if (!priv->radio_on) { + ret = -EINVAL; + goto out; + } + + if (!netif_running(dev)) { + ret = -ENETDOWN; + goto out; + } + + /* mac80211 does this: + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + if (sdata->type != IEEE80211_IF_TYPE_xxx) { + ret = -EOPNOTSUPP; + goto out; + } + */ + + if (wrqu->data.length == sizeof(struct iw_scan_req) && + wrqu->data.flags & IW_SCAN_THIS_ESSID) { + struct iw_scan_req *req = (struct iw_scan_req *)extra; + priv->scan_ssid_len = req->essid_len; + memcpy(priv->scan_ssid, req->essid, priv->scan_ssid_len); + lbs_deb_wext("set_scan, essid '%s'\n", + print_ssid(ssid, priv->scan_ssid, priv->scan_ssid_len)); + } else { + priv->scan_ssid_len = 0; + } + + if (!delayed_work_pending(&priv->scan_work)) + queue_delayed_work(priv->work_thread, &priv->scan_work, + msecs_to_jiffies(50)); + /* set marker that currently a scan is taking place */ + priv->scan_channel = -1; + + if (priv->surpriseremoved) + ret = -EIO; + +out: + lbs_deb_leave_args(LBS_DEB_WEXT, "ret %d", ret); + return ret; +} + + /** - * @brief Retrieve the scan table entries via wireless tools IOCTL call + * @brief Handle Retrieve scan table ioctl * * @param dev A pointer to net_device structure * @param info A pointer to iw_request_info structure @@ -1536,33 +1151,34 @@ static inline char *libertas_translate_scan(wlan_private *priv, * * @return 0 --success, otherwise fail */ -int libertas_get_scan(struct net_device *dev, struct iw_request_info *info, - struct iw_point *dwrq, char *extra) +int lbs_get_scan(struct net_device *dev, struct iw_request_info *info, + struct iw_point *dwrq, char *extra) { #define SCAN_ITEM_SIZE 128 - wlan_private *priv = dev->priv; - wlan_adapter *adapter = priv->adapter; + struct lbs_private *priv = dev->ml_priv; int err = 0; char *ev = extra; char *stop = ev + dwrq->length; - struct bss_descriptor * iter_bss; - struct bss_descriptor * safe; + struct bss_descriptor *iter_bss; + struct bss_descriptor *safe; - lbs_deb_enter(LBS_DEB_ASSOC); + lbs_deb_enter(LBS_DEB_WEXT); - /* 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); + /* iwlist should wait until the current scan is finished */ + if (priv->scan_channel) + return -EAGAIN; /* 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); + if ((priv->mode == IW_MODE_ADHOC) && priv->adhoccreate) { + err = lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0, + CMD_OPTION_WAITFORRSP, 0, NULL); + if (err) + goto out; } - mutex_lock(&adapter->lock); - list_for_each_entry_safe (iter_bss, safe, &adapter->network_list, list) { - char * next_ev; + mutex_lock(&priv->lock); + list_for_each_entry_safe (iter_bss, safe, &priv->network_list, list) { + char *next_ev; unsigned long stale_time; if (stop - ev < SCAN_ITEM_SIZE) { @@ -1577,91 +1193,41 @@ int libertas_get_scan(struct net_device *dev, struct iw_request_info *info, /* 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); + list_move_tail(&iter_bss->list, &priv->network_free_list); clear_bss_descriptor(iter_bss); continue; } /* Translate to WE format this entry */ - next_ev = libertas_translate_scan(priv, ev, stop, iter_bss); + next_ev = lbs_translate_scan(priv, info, ev, stop, iter_bss); if (next_ev == NULL) continue; ev = next_ev; } - mutex_unlock(&adapter->lock); + mutex_unlock(&priv->lock); dwrq->length = (ev - extra); dwrq->flags = 0; - - lbs_deb_leave(LBS_DEB_ASSOC); +out: + lbs_deb_leave_args(LBS_DEB_WEXT, "ret %d", err); return err; } -/** - * @brief Prepare a scan command to be sent to the firmware - * - * Use the wlan_scan_cmd_config sent to the command processing module in - * the libertas_prepare_and_send_command to configure a cmd_ds_802_11_scan command - * struct to send to firmware. - * - * The fixed fields specifying the BSS type and BSSID filters as well as a - * variable number/length of TLVs are sent in the command to firmware. - * - * @param priv A pointer to wlan_private structure - * @param cmd A pointer to cmd_ds_command structure to be sent to - * firmware with the cmd_DS_801_11_SCAN structure - * @param pdata_buf Void pointer cast of a wlan_scan_cmd_config struct used - * to set the fields/TLVs for the command sent to firmware - * - * @return 0 or -1 - * - * @sa wlan_scan_create_channel_list - */ -int libertas_cmd_80211_scan(wlan_private * priv, - struct cmd_ds_command *cmd, void *pdata_buf) -{ - struct cmd_ds_802_11_scan *pscan = &cmd->params.scan; - struct wlan_scan_cmd_config *pscancfg; - - lbs_deb_enter(LBS_DEB_ASSOC); - - pscancfg = pdata_buf; - - /* Set fixed field variables in scan command */ - pscan->bsstype = pscancfg->bsstype; - memcpy(pscan->bssid, pscancfg->bssid, ETH_ALEN); - memcpy(pscan->tlvbuffer, pscancfg->tlvbuffer, pscancfg->tlvbufferlen); - cmd->command = cpu_to_le16(CMD_802_11_SCAN); - /* size is equal to the sizeof(fixed portions) + the TLV len + header */ - cmd->size = cpu_to_le16(sizeof(pscan->bsstype) + ETH_ALEN - + pscancfg->tlvbufferlen + S_DS_GEN); - 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)); +/*********************************************************************/ +/* */ +/* Command execution */ +/* */ +/*********************************************************************/ - 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 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 * + * Called from handle_cmd_response() in cmdrespc. + * * The response buffer for the scan command has the following * memory layout: * @@ -1678,91 +1244,80 @@ static inline int is_same_network(struct bss_descriptor *src, * | bufsize and sizeof the fixed fields above) | * .-----------------------------------------------------------. * - * @param priv A pointer to wlan_private structure + * @param priv A pointer to struct lbs_private structure * @param resp A pointer to cmd_ds_command * * @return 0 or -1 */ -int libertas_ret_80211_scan(wlan_private * priv, struct cmd_ds_command *resp) +static int lbs_ret_80211_scan(struct lbs_private *priv, unsigned long dummy, + struct cmd_header *resp) { - wlan_adapter *adapter = priv->adapter; - struct cmd_ds_802_11_scan_rsp *pscan; - struct mrvlietypes_data *ptlv; - struct mrvlietypes_tsftimestamp *ptsftlv; - struct bss_descriptor * iter_bss; - struct bss_descriptor * safe; - u8 *pbssinfo; - u16 scanrespsize; + struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp; + struct bss_descriptor *iter_bss; + struct bss_descriptor *safe; + uint8_t *bssinfo; + uint16_t scanrespsize; int bytesleft; int idx; int tlvbufsize; int ret; - lbs_deb_enter(LBS_DEB_ASSOC); + lbs_deb_enter(LBS_DEB_SCAN); /* Prune old entries from scan table */ - list_for_each_entry_safe (iter_bss, safe, &adapter->network_list, list) { + list_for_each_entry_safe (iter_bss, safe, &priv->network_list, list) { unsigned long stale_time = iter_bss->last_scanned + DEFAULT_MAX_SCAN_AGE; if (time_before(jiffies, stale_time)) continue; - list_move_tail (&iter_bss->list, &adapter->network_free_list); + list_move_tail (&iter_bss->list, &priv->network_free_list); clear_bss_descriptor(iter_bss); } - pscan = &resp->params.scanresp; - - 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); + if (scanresp->nr_sets > MAX_NETWORK_COUNT) { + lbs_deb_scan("SCAN_RESP: too many scan results (%d, max %d)\n", + scanresp->nr_sets, MAX_NETWORK_COUNT); ret = -1; goto done; } - bytesleft = le16_to_cpu(pscan->bssdescriptsize); + bytesleft = get_unaligned_le16(&scanresp->bssdescriptsize); lbs_deb_scan("SCAN_RESP: bssdescriptsize %d\n", bytesleft); scanrespsize = le16_to_cpu(resp->size); - lbs_deb_scan("SCAN_RESP: returned %d AP before parsing\n", - pscan->nr_sets); + lbs_deb_scan("SCAN_RESP: scan results %d\n", scanresp->nr_sets); - pbssinfo = pscan->bssdesc_and_tlvbuffer; + bssinfo = scanresp->bssdesc_and_tlvbuffer; /* The size of the TLV buffer is equal to the entire command response * size (scanrespsize) minus the fixed fields (sizeof()'s), the * BSS Descriptions (bssdescriptsize as bytesLef) and the command - * response header (S_DS_GEN) + * response header (sizeof(struct cmd_header)) */ - tlvbufsize = scanrespsize - (bytesleft + sizeof(pscan->bssdescriptsize) - + sizeof(pscan->nr_sets) - + S_DS_GEN); - - ptlv = (struct mrvlietypes_data *) (pscan->bssdesc_and_tlvbuffer + bytesleft); - - /* Search the TLV buffer space in the scan response for any valid TLVs */ - wlan_ret_802_11_scan_get_tlv_ptrs(ptlv, tlvbufsize, &ptsftlv); + tlvbufsize = scanrespsize - (bytesleft + sizeof(scanresp->bssdescriptsize) + + sizeof(scanresp->nr_sets) + + sizeof(struct cmd_header)); /* - * Process each scan response returned (pscan->nr_sets). Save + * Process each scan response returned (scanresp->nr_sets). Save * the information in the newbssentry and then insert into the * driver scan table either as an update to an existing entry * or as an addition at the end of the table */ - for (idx = 0; idx < pscan->nr_sets && bytesleft; idx++) { + for (idx = 0; idx < scanresp->nr_sets && bytesleft; idx++) { struct bss_descriptor new; - struct bss_descriptor * found = NULL; - struct bss_descriptor * oldest = NULL; + struct bss_descriptor *found = NULL; + struct bss_descriptor *oldest = NULL; /* Process the data fields and IEs returned for this BSS */ memset(&new, 0, sizeof (struct bss_descriptor)); - if (libertas_process_bss(&new, &pbssinfo, &bytesleft) != 0) { + if (lbs_process_bss(&new, &bssinfo, &bytesleft) != 0) { /* error parsing the scan response, skipped */ lbs_deb_scan("SCAN_RESP: process_bss returned ERROR\n"); continue; } /* Try to find this bss in the scan table */ - list_for_each_entry (iter_bss, &adapter->network_list, list) { + list_for_each_entry (iter_bss, &priv->network_list, list) { if (is_same_network(iter_bss, &new)) { found = iter_bss; break; @@ -1776,33 +1331,21 @@ int libertas_ret_80211_scan(wlan_private * priv, struct cmd_ds_command *resp) if (found) { /* found, clear it */ clear_bss_descriptor(found); - } else if (!list_empty(&adapter->network_free_list)) { + } else if (!list_empty(&priv->network_free_list)) { /* Pull one from the free list */ - found = list_entry(adapter->network_free_list.next, + found = list_entry(priv->network_free_list.next, struct bss_descriptor, list); - list_move_tail(&found->list, &adapter->network_list); + list_move_tail(&found->list, &priv->network_list); } else if (oldest) { /* If there are no more slots, expire the oldest */ found = oldest; clear_bss_descriptor(found); - list_move_tail(&found->list, &adapter->network_list); + list_move_tail(&found->list, &priv->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]); - - /* - * 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_deb_scan("SCAN_RESP: BSSID %pM\n", new.bssid); /* Copy the locally created newbssentry to the scan table */ memcpy(found, &new, offsetof(struct bss_descriptor, list));