diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/wl12xx/scan.c | 107 |
1 files changed, 72 insertions, 35 deletions
diff --git a/drivers/net/wireless/wl12xx/scan.c b/drivers/net/wireless/wl12xx/scan.c index 4a4d0d03fa1f..488033b2a39b 100644 --- a/drivers/net/wireless/wl12xx/scan.c +++ b/drivers/net/wireless/wl12xx/scan.c @@ -471,34 +471,77 @@ wl1271_scan_sched_scan_channels(struct wl1271 *wl, cfg->passive[2] || cfg->active[2]; } -/* Returns 0 if no wildcard is used, 1 if wildcard is used or a - * negative value on error */ +/* Returns the scan type to be used or a negative value on error */ static int wl12xx_scan_sched_scan_ssid_list(struct wl1271 *wl, struct cfg80211_sched_scan_request *req) { struct wl1271_cmd_sched_scan_ssid_list *cmd = NULL; - struct cfg80211_ssid *ssid = req->ssids; - int ret, wildcard = 0; + struct cfg80211_match_set *sets = req->match_sets; + struct cfg80211_ssid *ssids = req->ssids; + int ret = 0, type, i, j; wl1271_debug(DEBUG_CMD, "cmd sched scan ssid list"); + /* No filter, no ssids or only bcast ssid */ + if (!req->n_match_sets && + (!req->n_ssids || + (req->n_ssids == 1 && req->ssids[0].ssid_len == 0))) { + type = SCAN_SSID_FILTER_ANY; + goto out; + } + cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); - if (!cmd) - return -ENOMEM; + if (!cmd) { + ret = -ENOMEM; + goto out; + } + + if (!req->n_match_sets) { + /* No filter, with ssids */ + type = SCAN_SSID_FILTER_DISABLED; + + for (i = 0; i < req->n_ssids; i++) { + cmd->ssids[cmd->n_ssids].type = (ssids[i].ssid_len) ? + SCAN_SSID_TYPE_HIDDEN : SCAN_SSID_TYPE_PUBLIC; + cmd->ssids[cmd->n_ssids].len = ssids[i].ssid_len; + memcpy(cmd->ssids[cmd->n_ssids].ssid, ssids[i].ssid, + ssids[i].ssid_len); + cmd->n_ssids++; + } + } else { + type = SCAN_SSID_FILTER_LIST; - while ((cmd->n_ssids < req->n_ssids) && ssid) { - if (ssid->ssid_len == 0) { - wildcard = 1; + /* Add all SSIDs from the filters */ + for (i = 0; i < req->n_match_sets; i++) { cmd->ssids[cmd->n_ssids].type = SCAN_SSID_TYPE_PUBLIC; - } else { - cmd->ssids[cmd->n_ssids].type = SCAN_SSID_TYPE_HIDDEN; + cmd->ssids[cmd->n_ssids].len = sets[i].ssid.ssid_len; + memcpy(cmd->ssids[cmd->n_ssids].ssid, + sets[i].ssid.ssid, sets[i].ssid.ssid_len); + cmd->n_ssids++; + } + if ((req->n_ssids > 1) || + (req->n_ssids == 1 && req->ssids[0].ssid_len > 0)) { + /* + * Mark all the SSIDs passed in the SSID list as HIDDEN, + * so they're used in probe requests. + */ + for (i = 0; i < req->n_ssids; i++) { + for (j = 0; j < cmd->n_ssids; j++) + if (!memcmp(req->ssids[i].ssid, + cmd->ssids[j].ssid, + req->ssids[i].ssid_len)) { + cmd->ssids[j].type = + SCAN_SSID_TYPE_HIDDEN; + break; + } + /* Fail if SSID isn't present in the filters */ + if (j == req->n_ssids) { + ret = -EINVAL; + goto out_free; + } + } } - cmd->ssids[cmd->n_ssids].len = ssid->ssid_len; - memcpy(cmd->ssids[cmd->n_ssids].ssid, ssid->ssid, - ssid->ssid_len); - ssid++; - cmd->n_ssids++; } wl1271_dump(DEBUG_SCAN, "SSID_LIST: ", cmd, sizeof(*cmd)); @@ -507,13 +550,15 @@ wl12xx_scan_sched_scan_ssid_list(struct wl1271 *wl, sizeof(*cmd), 0); if (ret < 0) { wl1271_error("cmd sched scan ssid list failed"); - goto out; + goto out_free; } - ret = wildcard; -out: +out_free: kfree(cmd); - return ret; +out: + if (ret < 0) + return ret; + return type; } int wl1271_scan_sched_scan_config(struct wl1271 *wl, @@ -548,21 +593,13 @@ int wl1271_scan_sched_scan_config(struct wl1271 *wl, cfg->intervals[i] = cpu_to_le32(req->interval); cfg->ssid_len = 0; - if (req->n_ssids == 0) { - wl1271_debug(DEBUG_SCAN, "using SCAN_SSID_FILTER_ANY"); - cfg->filter_type = SCAN_SSID_FILTER_ANY; - } else { - ret = wl12xx_scan_sched_scan_ssid_list(wl, req); - if (ret < 0) - goto out; - if (ret) { - wl1271_debug(DEBUG_SCAN, "using SCAN_SSID_FILTER_DISABLED"); - cfg->filter_type = SCAN_SSID_FILTER_DISABLED; - } else { - wl1271_debug(DEBUG_SCAN, "using SCAN_SSID_FILTER_LIST"); - cfg->filter_type = SCAN_SSID_FILTER_LIST; - } - } + ret = wl12xx_scan_sched_scan_ssid_list(wl, req); + if (ret < 0) + goto out; + + cfg->filter_type = ret; + + wl1271_debug(DEBUG_SCAN, "filter_type = %d", cfg->filter_type); if (!wl1271_scan_sched_scan_channels(wl, req, cfg)) { wl1271_error("scan channel list is empty"); |