diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/wireless/libertas/join.c | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/libertas/scan.c | 221 |
2 files changed, 155 insertions, 68 deletions
diff --git a/drivers/net/wireless/libertas/join.c b/drivers/net/wireless/libertas/join.c index 8dcff00574f..dc24a05c944 100644 --- a/drivers/net/wireless/libertas/join.c +++ b/drivers/net/wireless/libertas/join.c @@ -800,8 +800,6 @@ int libertas_ret_80211_associate(wlan_private * priv, netif_wake_queue(priv->mesh_dev); } - lbs_deb_join("ASSOC_RESP: Associated \n"); - memcpy(wrqu.ap_addr.sa_data, adapter->curbssparams.bssid, ETH_ALEN); wrqu.ap_addr.sa_family = ARPHRD_ETHER; wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL); diff --git a/drivers/net/wireless/libertas/scan.c b/drivers/net/wireless/libertas/scan.c index dcce354e904..ad1e67d984c 100644 --- a/drivers/net/wireless/libertas/scan.c +++ b/drivers/net/wireless/libertas/scan.c @@ -65,6 +65,15 @@ static const u8 zeromac[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; static const u8 bcastmac[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; + + + +/*********************************************************************/ +/* */ +/* Misc helper functions */ +/* */ +/*********************************************************************/ + static inline void clear_bss_descriptor (struct bss_descriptor * bss) { /* Don't blow away ->list, just BSS data */ @@ -165,7 +174,7 @@ static int is_network_compatible(wlan_adapter * adapter, { int matched = 0; - lbs_deb_enter(LBS_DEB_ASSOC); + lbs_deb_enter(LBS_DEB_SCAN); if (bss->mode != mode) goto done; @@ -214,13 +223,41 @@ static int is_network_compatible(wlan_adapter * adapter, (bss->capability & WLAN_CAPABILITY_PRIVACY)); done: - lbs_deb_leave(LBS_DEB_SCAN); + lbs_deb_leave_args(LBS_DEB_SCAN, "matched: %d", matched); return matched; } /** + * @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 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); +} + + + + +/*********************************************************************/ +/* */ +/* Main scanning support */ +/* */ +/*********************************************************************/ + + +/** * @brief Create a channel list for the driver to scan based on region info * + * Only used from wlan_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. @@ -248,6 +285,8 @@ static void wlan_scan_create_channel_list(wlan_private * priv, int nextchan; u8 scantype; + lbs_deb_enter_args(LBS_DEB_SCAN, "filteredscan %d", filteredscan); + chanidx = 0; /* Set the default scan type to the user specified type, will later @@ -384,6 +423,8 @@ wlan_scan_setup_scan_config(wlan_private * priv, int channel; int radiotype; + lbs_deb_enter(LBS_DEB_SCAN); + pscancfgout = kzalloc(MAX_SCAN_CFG_ALLOC, GFP_KERNEL); if (pscancfgout == NULL) goto out; @@ -481,13 +522,12 @@ wlan_scan_setup_scan_config(wlan_private * priv, if (!puserscanin || !puserscanin->chanlist[0].channumber) { /* Create a default channel scan list */ - lbs_deb_scan("Scan: Creating full region channel list\n"); + lbs_deb_scan("creating full region channel list\n"); wlan_scan_create_channel_list(priv, pscanchanlist, *pfilteredscan); goto out; } - lbs_deb_scan("Scan: Using supplied channel list\n"); for (chanidx = 0; chanidx < WLAN_IOCTL_USER_SCAN_CHAN_MAX && puserscanin->chanlist[chanidx].channumber; chanidx++) { @@ -529,7 +569,7 @@ wlan_scan_setup_scan_config(wlan_private * priv, (puserscanin->chanlist[0].channumber == priv->adapter->curbssparams.channel)) { *pscancurrentonly = 1; - lbs_deb_scan("Scan: Scanning current channel only"); + lbs_deb_scan("scanning current channel only"); } out: @@ -539,6 +579,8 @@ out: /** * @brief Construct and send multiple scan config commands to the firmware * + * Only used from wlan_scan_networks() + * * 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 @@ -576,12 +618,14 @@ static int wlan_scan_channel_list(wlan_private * priv, int scanned = 0; union iwreq_data wrqu; - lbs_deb_enter(LBS_DEB_ASSOC); + lbs_deb_enter_args(LBS_DEB_SCAN, "maxchanperscan %d, filteredscan %d, " + "full_scan %d", maxchanperscan, filteredscan, full_scan); if (!pscancfgout || !pchantlvout || !pscanchanlist) { - lbs_deb_scan("Scan: Null detect: %p, %p, %p\n", - pscancfgout, pchantlvout, pscanchanlist); - return -1; + lbs_deb_scan("pscancfgout, pchantlvout or " + "pscanchanlist is NULL\n"); + ret = -1; + goto out; } pchantlvout->header.type = cpu_to_le16(TLV_TYPE_CHANLIST); @@ -613,9 +657,10 @@ static int wlan_scan_channel_list(wlan_private * priv, 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, + lbs_deb_scan("channel %d, radio %d, passive %d, " + "dischanflt %d, maxscantime %d\n", + ptmpchan->channumber, + ptmpchan->radiotype, ptmpchan->chanscanmode.passivescan, ptmpchan->chanscanmode.disablechanfilt, ptmpchan->maxscantime); @@ -700,20 +745,25 @@ done: wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL); } +out: 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) +/* + * Only used from wlan_scan_networks() +*/ +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; + struct bss_descriptor *bss; + struct bss_descriptor *safe; u32 clear_ssid_flag = 0, clear_bssid_flag = 0; + lbs_deb_enter(LBS_DEB_SCAN); + if (!scan_cfg) - return; + goto out; if (scan_cfg->clear_ssid && scan_cfg->ssid_len) clear_ssid_flag = 1; @@ -725,7 +775,7 @@ clear_selected_scan_list_entries(wlan_adapter * adapter, } if (!clear_ssid_flag && !clear_bssid_flag) - return; + goto out; mutex_lock(&adapter->lock); list_for_each_entry_safe (bss, safe, &adapter->network_list, list) { @@ -748,12 +798,16 @@ clear_selected_scan_list_entries(wlan_adapter * adapter, } } mutex_unlock(&adapter->lock); +out: + lbs_deb_leave(LBS_DEB_SCAN); } /** * @brief Internal function used to start a scan based on an input config * + * Also used from debugfs + * * Use the input user scan configuration information when provided in * order to send the appropriate scan commands to firmware to populate or * update the internal driver scan table @@ -761,6 +815,7 @@ clear_selected_scan_list_entries(wlan_adapter * adapter, * @param priv A pointer to wlan_private structure * @param puserscanin Pointer to the input configuration for the requested * scan. + * @param full_scan ??? * * @return 0 or < 0 if error */ @@ -782,7 +837,7 @@ int wlan_scan_networks(wlan_private * priv, DECLARE_MAC_BUF(mac); #endif - lbs_deb_enter(LBS_DEB_SCAN); + lbs_deb_enter_args(LBS_DEB_SCAN, "full_scan %d", full_scan); /* Cancel any partial outstanding partial scans if this scan * is a full scan. @@ -833,8 +888,9 @@ int wlan_scan_networks(wlan_private * priv, #ifdef CONFIG_LIBERTAS_DEBUG /* Dump the scan table */ mutex_lock(&adapter->lock); + lbs_deb_scan("The scan table contains:\n"); list_for_each_entry (iter_bss, &adapter->network_list, list) { - lbs_deb_scan("Scan:(%02d) %s, RSSI[%03d], SSID[%s]\n", + lbs_deb_scan("scan %02d, %s, RSSI, %d, SSID '%s'\n", i++, print_mac(mac, iter_bss->bssid), (s32) iter_bss->rssi, escape_essid(iter_bss->ssid, iter_bss->ssid_len)); } @@ -886,7 +942,7 @@ static int libertas_process_bss(struct bss_descriptor * bss, u16 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 */ @@ -898,7 +954,8 @@ 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 */ @@ -915,7 +972,8 @@ static int libertas_process_bss(struct bss_descriptor * bss, if ((end - pos) < 12) { lbs_deb_scan("process_bss: Not enough bytes left\n"); - return -1; + ret = -1; + goto done; } /* @@ -1091,38 +1149,26 @@ done: } /** - * @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 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 * + * Used in association code + * * @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) */ -struct bss_descriptor * libertas_find_bssid_in_list(wlan_adapter * adapter, +struct bss_descriptor *libertas_find_bssid_in_list(wlan_adapter * adapter, u8 * bssid, u8 mode) { struct bss_descriptor * iter_bss; struct bss_descriptor * found_bss = NULL; + lbs_deb_enter(LBS_DEB_SCAN); + if (!bssid) - return NULL; + goto out; lbs_deb_hex(LBS_DEB_SCAN, "looking for", bssid, ETH_ALEN); @@ -1149,12 +1195,16 @@ struct bss_descriptor * libertas_find_bssid_in_list(wlan_adapter * adapter, } mutex_unlock(&adapter->lock); +out: + lbs_deb_leave_args(LBS_DEB_SCAN, "found_bss %p", found_bss); return found_bss; } /** * @brief This function finds ssid in ssid list. * + * Used in association code + * * @param adapter A pointer to wlan_adapter * @param ssid SSID to find in the list * @param bssid BSSID to qualify the SSID selection (if provided) @@ -1171,6 +1221,8 @@ struct bss_descriptor * libertas_find_ssid_in_list(wlan_adapter * adapter, struct bss_descriptor * found_bss = NULL; struct bss_descriptor * tmp_oldest = NULL; + lbs_deb_enter(LBS_DEB_SCAN); + mutex_lock(&adapter->lock); list_for_each_entry (iter_bss, &adapter->network_list, list) { @@ -1215,6 +1267,7 @@ struct bss_descriptor * libertas_find_ssid_in_list(wlan_adapter * adapter, out: mutex_unlock(&adapter->lock); + lbs_deb_leave_args(LBS_DEB_SCAN, "found_bss %p", found_bss); return found_bss; } @@ -1235,6 +1288,8 @@ static struct bss_descriptor * libertas_find_best_ssid_in_list(wlan_adapter * ad struct bss_descriptor * iter_bss; struct bss_descriptor * best_bss = NULL; + lbs_deb_enter(LBS_DEB_SCAN); + mutex_lock(&adapter->lock); list_for_each_entry (iter_bss, &adapter->network_list, list) { @@ -1259,12 +1314,15 @@ static struct bss_descriptor * libertas_find_best_ssid_in_list(wlan_adapter * ad } mutex_unlock(&adapter->lock); + lbs_deb_leave_args(LBS_DEB_SCAN, "best_bss %p", best_bss); return best_bss; } /** * @brief Find the AP with specific ssid in the scan list * + * Used from association worker. + * * @param priv A pointer to wlan_private structure * @param pSSID A pointer to AP's ssid * @@ -1277,11 +1335,11 @@ int libertas_find_best_network_ssid(wlan_private * priv, int ret = -1; struct bss_descriptor * found; - lbs_deb_enter(LBS_DEB_ASSOC); + lbs_deb_enter(LBS_DEB_SCAN); wlan_scan_networks(priv, NULL, 1); if (adapter->surpriseremoved) - return -1; + goto out; wait_event_interruptible(adapter->cmd_pending, !adapter->nr_cmd_pending); @@ -1293,6 +1351,7 @@ int libertas_find_best_network_ssid(wlan_private * priv, ret = 0; } +out: lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); return ret; } @@ -1327,10 +1386,17 @@ int libertas_set_scan(struct net_device *dev, struct iw_request_info *info, return 0; } + /** * @brief Send a scan command for all available channels filtered on a spec * + * Used in association code and from debugfs + * * @param priv A pointer to wlan_private structure + * @param ssid A pointer to the SSID to scan for + * @param ssid_len Length of the SSID + * @param clear_ssid Should existing scan results with this SSID + * be cleared? * @param prequestedssid A pointer to AP's ssid * @param keeppreviousscan Flag used to save/clear scan table before scan * @@ -1343,7 +1409,8 @@ int libertas_send_specific_ssid_scan(wlan_private * priv, struct wlan_ioctl_user_scan_cfg scancfg; int ret = 0; - lbs_deb_enter(LBS_DEB_ASSOC); + lbs_deb_enter_args(LBS_DEB_SCAN, "SSID '%s', clear %d", + escape_essid(ssid, ssid_len), clear_ssid); if (!ssid_len) goto out; @@ -1354,15 +1421,26 @@ int libertas_send_specific_ssid_scan(wlan_private * priv, scancfg.clear_ssid = clear_ssid; wlan_scan_networks(priv, &scancfg, 1); - if (adapter->surpriseremoved) - return -1; + if (adapter->surpriseremoved) { + ret = -1; + goto out; + } wait_event_interruptible(adapter->cmd_pending, !adapter->nr_cmd_pending); out: - lbs_deb_leave(LBS_DEB_ASSOC); + lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); return ret; } + + + +/*********************************************************************/ +/* */ +/* Support for Wireless Extensions */ +/* */ +/*********************************************************************/ + #define MAX_CUSTOM_LEN 64 static inline char *libertas_translate_scan(wlan_private *priv, @@ -1379,10 +1457,13 @@ static inline char *libertas_translate_scan(wlan_private *priv, #define RSSI_DIFF ((u8)(PERFECT_RSSI - WORST_RSSI)) u8 rssi; + lbs_deb_enter(LBS_DEB_SCAN); + 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; + start = NULL; + goto out; } /* First entry *MUST* be the AP BSSID */ @@ -1510,11 +1591,13 @@ static inline char *libertas_translate_scan(wlan_private *priv, start = iwe_stream_add_point(start, stop, &iwe, custom); } +out: + lbs_deb_leave_args(LBS_DEB_SCAN, "start %p", start); return start; } /** - * @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 @@ -1535,7 +1618,7 @@ int libertas_get_scan(struct net_device *dev, struct iw_request_info *info, struct bss_descriptor * iter_bss; struct bss_descriptor * safe; - lbs_deb_enter(LBS_DEB_ASSOC); + lbs_deb_enter(LBS_DEB_SCAN); /* Update RSSI if current BSS is a locally created ad-hoc BSS */ if ((adapter->mode == IW_MODE_ADHOC) && adapter->adhoccreate) { @@ -1577,19 +1660,27 @@ int libertas_get_scan(struct net_device *dev, struct iw_request_info *info, dwrq->length = (ev - extra); dwrq->flags = 0; - lbs_deb_leave(LBS_DEB_ASSOC); + lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", err); return err; } + + + +/*********************************************************************/ +/* */ +/* Command execution */ +/* */ +/*********************************************************************/ + + /** * @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. + * Called from libertas_prepare_and_send_command() in cmd.c * - * 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. + * Sends a fixed lenght data part (specifying the BSS type and BSSID filters) + * as well as a variable number/length of TLVs to the firmware. * * @param priv A pointer to wlan_private structure * @param cmd A pointer to cmd_ds_command structure to be sent to @@ -1598,18 +1689,14 @@ int libertas_get_scan(struct net_device *dev, struct iw_request_info *info, * 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); + struct wlan_scan_cmd_config *pscancfg = pdata_buf; - pscancfg = pdata_buf; + lbs_deb_enter(LBS_DEB_SCAN); /* Set fixed field variables in scan command */ pscan->bsstype = pscancfg->bsstype; @@ -1622,11 +1709,11 @@ int libertas_cmd_80211_scan(wlan_private * priv, 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", + lbs_deb_scan("SCAN_CMD: command 0x%04x, size %d, seqnum %d\n", le16_to_cpu(cmd->command), le16_to_cpu(cmd->size), le16_to_cpu(cmd->seqnum)); - lbs_deb_leave(LBS_DEB_ASSOC); + lbs_deb_leave(LBS_DEB_SCAN); return 0; } @@ -1645,6 +1732,8 @@ static inline int is_same_network(struct bss_descriptor *src, /** * @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: * @@ -1679,7 +1768,7 @@ int libertas_ret_80211_scan(wlan_private * priv, struct cmd_ds_command *resp) 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) { |