wl1251: cleanup scanning code
The current scanning code wasn't following the preferred style. Move code related to scan and trigger scan to commans to wl1251_cmd.c. Because there's now less code in wl1251_hw_scan(), the function can be now merged with wl1251_op_hw_scan(). Signed-off-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
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7c12ce8b85
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3a98c30f3e
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@ -410,3 +410,85 @@ out:
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kfree(cmd);
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return ret;
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}
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int wl1251_cmd_scan(struct wl1251 *wl, u8 *ssid, size_t ssid_len,
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unsigned int n_channels, unsigned int n_probes)
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{
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struct wl1251_cmd_scan *cmd;
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int i, ret = 0;
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wl1251_debug(DEBUG_CMD, "cmd scan");
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cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
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if (!cmd)
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return -ENOMEM;
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cmd->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
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cmd->params.rx_filter_options = cpu_to_le32(CFG_RX_PRSP_EN |
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CFG_RX_MGMT_EN |
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CFG_RX_BCN_EN);
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cmd->params.scan_options = 0;
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cmd->params.num_channels = n_channels;
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cmd->params.num_probe_requests = n_probes;
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cmd->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
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cmd->params.tid_trigger = 0;
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for (i = 0; i < n_channels; i++) {
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cmd->channels[i].min_duration =
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cpu_to_le32(WL1251_SCAN_MIN_DURATION);
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cmd->channels[i].max_duration =
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cpu_to_le32(WL1251_SCAN_MAX_DURATION);
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memset(&cmd->channels[i].bssid_lsb, 0xff, 4);
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memset(&cmd->channels[i].bssid_msb, 0xff, 2);
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cmd->channels[i].early_termination = 0;
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cmd->channels[i].tx_power_att = 0;
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cmd->channels[i].channel = i + 1;
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}
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cmd->params.ssid_len = ssid_len;
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if (ssid)
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memcpy(cmd->params.ssid, ssid, ssid_len);
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ret = wl1251_cmd_send(wl, CMD_SCAN, cmd, sizeof(*cmd));
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if (ret < 0) {
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wl1251_error("cmd scan failed: %d", ret);
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goto out;
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}
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wl1251_mem_read(wl, wl->cmd_box_addr, cmd, sizeof(*cmd));
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if (cmd->header.status != CMD_STATUS_SUCCESS) {
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wl1251_error("cmd scan status wasn't success: %d",
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cmd->header.status);
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ret = -EIO;
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goto out;
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}
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out:
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kfree(cmd);
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return ret;
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}
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int wl1251_cmd_trigger_scan_to(struct wl1251 *wl, u32 timeout)
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{
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struct wl1251_cmd_trigger_scan_to *cmd;
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int ret;
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wl1251_debug(DEBUG_CMD, "cmd trigger scan to");
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cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
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if (!cmd)
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return -ENOMEM;
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cmd->timeout = timeout;
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ret = wl1251_cmd_send(wl, CMD_SCAN, cmd, sizeof(*cmd));
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if (ret < 0) {
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wl1251_error("cmd trigger scan to failed: %d", ret);
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goto out;
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}
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out:
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kfree(cmd);
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return ret;
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}
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@ -43,6 +43,9 @@ int wl1251_cmd_read_memory(struct wl1251 *wl, u32 addr, void *answer,
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size_t len);
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int wl1251_cmd_template_set(struct wl1251 *wl, u16 cmd_id,
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void *buf, size_t buf_len);
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int wl1251_cmd_scan(struct wl1251 *wl, u8 *ssid, size_t ssid_len,
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unsigned int n_channels, unsigned int n_probes);
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int wl1251_cmd_trigger_scan_to(struct wl1251 *wl, u32 timeout);
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/* unit ms */
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#define WL1251_COMMAND_TIMEOUT 2000
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@ -163,8 +166,10 @@ struct cmd_read_write_memory {
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#define CMDMBOX_HEADER_LEN 4
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#define CMDMBOX_INFO_ELEM_HEADER_LEN 4
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#define WL1251_SCAN_MIN_DURATION 30000
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#define WL1251_SCAN_MAX_DURATION 60000
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struct basic_scan_parameters {
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struct wl1251_scan_parameters {
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u32 rx_config_options;
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u32 rx_filter_options;
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@ -189,11 +194,11 @@ struct basic_scan_parameters {
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u8 tid_trigger;
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u8 ssid_len;
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u32 ssid[8];
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u8 ssid[32];
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} __attribute__ ((packed));
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struct basic_scan_channel_parameters {
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struct wl1251_scan_ch_parameters {
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u32 min_duration; /* in TU */
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u32 max_duration; /* in TU */
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u32 bssid_lsb;
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@ -213,11 +218,11 @@ struct basic_scan_channel_parameters {
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/* SCAN parameters */
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#define SCAN_MAX_NUM_OF_CHANNELS 16
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struct cmd_scan {
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struct wl1251_cmd_scan {
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struct wl1251_cmd_header header;
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struct basic_scan_parameters params;
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struct basic_scan_channel_parameters channels[SCAN_MAX_NUM_OF_CHANNELS];
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struct wl1251_scan_parameters params;
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struct wl1251_scan_ch_parameters channels[SCAN_MAX_NUM_OF_CHANNELS];
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} __attribute__ ((packed));
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enum {
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@ -903,111 +903,13 @@ static int wl1251_build_probe_req(struct wl1251 *wl, u8 *ssid, size_t ssid_len)
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size);
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}
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static int wl1251_hw_scan(struct wl1251 *wl, u8 *ssid, size_t len,
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u8 active_scan, u8 high_prio, u8 num_channels,
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u8 probe_requests)
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{
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struct wl1251_cmd_trigger_scan_to *trigger = NULL;
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struct cmd_scan *params = NULL;
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int i, ret;
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u16 scan_options = 0;
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if (wl->scanning)
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return -EINVAL;
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params = kzalloc(sizeof(*params), GFP_KERNEL);
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if (!params)
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return -ENOMEM;
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params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
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params->params.rx_filter_options =
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cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
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/* High priority scan */
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if (!active_scan)
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scan_options |= SCAN_PASSIVE;
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if (high_prio)
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scan_options |= SCAN_PRIORITY_HIGH;
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params->params.scan_options = scan_options;
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params->params.num_channels = num_channels;
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params->params.num_probe_requests = probe_requests;
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params->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
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params->params.tid_trigger = 0;
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for (i = 0; i < num_channels; i++) {
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params->channels[i].min_duration = cpu_to_le32(30000);
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params->channels[i].max_duration = cpu_to_le32(60000);
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memset(¶ms->channels[i].bssid_lsb, 0xff, 4);
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memset(¶ms->channels[i].bssid_msb, 0xff, 2);
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params->channels[i].early_termination = 0;
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params->channels[i].tx_power_att = 0;
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params->channels[i].channel = i + 1;
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memset(params->channels[i].pad, 0, 3);
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}
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for (i = num_channels; i < SCAN_MAX_NUM_OF_CHANNELS; i++)
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memset(¶ms->channels[i], 0,
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sizeof(struct basic_scan_channel_parameters));
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if (len && ssid) {
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params->params.ssid_len = len;
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memcpy(params->params.ssid, ssid, len);
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} else {
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params->params.ssid_len = 0;
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memset(params->params.ssid, 0, 32);
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}
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ret = wl1251_build_probe_req(wl, ssid, len);
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if (ret < 0) {
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wl1251_error("PROBE request template failed");
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goto out;
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}
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trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
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if (!trigger)
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goto out;
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trigger->timeout = 0;
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ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
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sizeof(*trigger));
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if (ret < 0) {
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wl1251_error("trigger scan to failed for hw scan");
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goto out;
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}
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wl1251_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
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wl->scanning = true;
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ret = wl1251_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
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if (ret < 0)
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wl1251_error("SCAN failed");
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wl1251_mem_read(wl, wl->cmd_box_addr, params, sizeof(*params));
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if (params->header.status != CMD_STATUS_SUCCESS) {
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wl1251_error("TEST command answer error: %d",
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params->header.status);
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wl->scanning = false;
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ret = -EIO;
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goto out;
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}
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out:
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kfree(params);
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return ret;
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}
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static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
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struct cfg80211_scan_request *req)
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{
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struct wl1251 *wl = hw->priv;
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int ret;
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u8 *ssid = NULL;
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size_t ssid_len = 0;
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u8 *ssid = NULL;
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int ret;
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wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
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@ -1018,12 +920,33 @@ static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
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mutex_lock(&wl->mutex);
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if (wl->scanning) {
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wl1251_debug(DEBUG_SCAN, "scan already in progress");
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ret = -EINVAL;
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goto out;
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}
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ret = wl1251_ps_elp_wakeup(wl);
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if (ret < 0)
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goto out;
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ret = wl1251_hw_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
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ret = wl1251_build_probe_req(wl, ssid, ssid_len);
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if (ret < 0)
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wl1251_error("probe request template build failed");
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ret = wl1251_cmd_trigger_scan_to(wl, 0);
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if (ret < 0)
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goto out_sleep;
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wl->scanning = true;
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ret = wl1251_cmd_scan(wl, ssid, ssid_len, 13, 3);
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if (ret < 0) {
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wl->scanning = false;
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goto out_sleep;
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}
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out_sleep:
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wl1251_ps_elp_sleep(wl);
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out:
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