From d5db2dfa660de13c3643149b89c7602dd49aa168 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Thu, 21 Aug 2008 17:51:07 -0400 Subject: libertas: convert CMD_802_11_RADIO_CONTROL to a direct command and return errors for operations like join & scan that aren't possible when the radio is turned off. Signed-off-by: Dan Williams Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/libertas/assoc.c b/drivers/net/wireless/libertas/assoc.c index 5072a89..d47e4d5 100644 --- a/drivers/net/wireless/libertas/assoc.c +++ b/drivers/net/wireless/libertas/assoc.c @@ -25,7 +25,7 @@ static const u8 bssid_off[ETH_ALEN] __attribute__ ((aligned (2))) = * @brief Associate to a specific BSS discovered in a scan * * @param priv A pointer to struct lbs_private structure - * @param pbssdesc Pointer to the BSS descriptor to associate with. + * @param assoc_req The association request describing the BSS to associate with * * @return 0-success, otherwise fail */ @@ -33,29 +33,29 @@ static int lbs_associate(struct lbs_private *priv, struct assoc_request *assoc_req) { int ret; + u8 preamble = RADIO_PREAMBLE_LONG; lbs_deb_enter(LBS_DEB_ASSOC); ret = lbs_prepare_and_send_command(priv, CMD_802_11_AUTHENTICATE, 0, CMD_OPTION_WAITFORRSP, 0, assoc_req->bss.bssid); - if (ret) - goto done; + goto out; - /* set preamble to firmware */ + /* Use short preamble only when both the BSS and firmware support it */ if ((priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) && (assoc_req->bss.capability & WLAN_CAPABILITY_SHORT_PREAMBLE)) - priv->preamble = CMD_TYPE_SHORT_PREAMBLE; - else - priv->preamble = CMD_TYPE_LONG_PREAMBLE; + preamble = RADIO_PREAMBLE_SHORT; - lbs_set_radio_control(priv); + ret = lbs_set_radio(priv, preamble, 1); + if (ret) + goto out; ret = lbs_prepare_and_send_command(priv, CMD_802_11_ASSOCIATE, 0, CMD_OPTION_WAITFORRSP, 0, assoc_req); -done: +out: lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); return ret; } @@ -64,8 +64,7 @@ done: * @brief Join an adhoc network found in a previous scan * * @param priv A pointer to struct lbs_private structure - * @param pbssdesc Pointer to a BSS descriptor found in a previous scan - * to attempt to join + * @param assoc_req The association request describing the BSS to join * * @return 0--success, -1--fail */ @@ -74,6 +73,9 @@ static int lbs_join_adhoc_network(struct lbs_private *priv, { struct bss_descriptor *bss = &assoc_req->bss; int ret = 0; + u8 preamble = RADIO_PREAMBLE_LONG; + + lbs_deb_enter(LBS_DEB_ASSOC); lbs_deb_join("current SSID '%s', ssid length %u\n", escape_essid(priv->curbssparams.ssid, @@ -106,18 +108,16 @@ static int lbs_join_adhoc_network(struct lbs_private *priv, goto out; } - /* Use shortpreamble only when both creator and card supports - short preamble */ - if (!(bss->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) || - !(priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)) { - lbs_deb_join("AdhocJoin: Long preamble\n"); - priv->preamble = CMD_TYPE_LONG_PREAMBLE; - } else { + /* Use short preamble only when both the BSS and firmware support it */ + if ((priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) && + (bss->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)) { lbs_deb_join("AdhocJoin: Short preamble\n"); - priv->preamble = CMD_TYPE_SHORT_PREAMBLE; + preamble = RADIO_PREAMBLE_SHORT; } - lbs_set_radio_control(priv); + ret = lbs_set_radio(priv, preamble, 1); + if (ret) + goto out; lbs_deb_join("AdhocJoin: channel = %d\n", assoc_req->channel); lbs_deb_join("AdhocJoin: band = %c\n", assoc_req->band); @@ -129,6 +129,7 @@ static int lbs_join_adhoc_network(struct lbs_private *priv, OID_802_11_SSID, assoc_req); out: + lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); return ret; } @@ -136,25 +137,27 @@ out: * @brief Start an Adhoc Network * * @param priv A pointer to struct lbs_private structure - * @param adhocssid The ssid of the Adhoc Network + * @param assoc_req The association request describing the BSS to start * @return 0--success, -1--fail */ static int lbs_start_adhoc_network(struct lbs_private *priv, struct assoc_request *assoc_req) { int ret = 0; + u8 preamble = RADIO_PREAMBLE_LONG; + + lbs_deb_enter(LBS_DEB_ASSOC); priv->adhoccreate = 1; if (priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) { lbs_deb_join("AdhocStart: Short preamble\n"); - priv->preamble = CMD_TYPE_SHORT_PREAMBLE; - } else { - lbs_deb_join("AdhocStart: Long preamble\n"); - priv->preamble = CMD_TYPE_LONG_PREAMBLE; + preamble = RADIO_PREAMBLE_SHORT; } - lbs_set_radio_control(priv); + ret = lbs_set_radio(priv, preamble, 1); + if (ret) + goto out; lbs_deb_join("AdhocStart: channel = %d\n", assoc_req->channel); lbs_deb_join("AdhocStart: band = %d\n", assoc_req->band); @@ -162,6 +165,8 @@ static int lbs_start_adhoc_network(struct lbs_private *priv, ret = lbs_prepare_and_send_command(priv, CMD_802_11_AD_HOC_START, 0, CMD_OPTION_WAITFORRSP, 0, assoc_req); +out: + lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); return ret; } diff --git a/drivers/net/wireless/libertas/cmd.c b/drivers/net/wireless/libertas/cmd.c index 8364a2f..f3073a5 100644 --- a/drivers/net/wireless/libertas/cmd.c +++ b/drivers/net/wireless/libertas/cmd.c @@ -1289,41 +1289,47 @@ void lbs_complete_command(struct lbs_private *priv, struct cmd_ctrl_node *cmd, priv->cur_cmd = NULL; } -int lbs_set_radio_control(struct lbs_private *priv) +int lbs_set_radio(struct lbs_private *priv, u8 preamble, u8 radio_on) { - int ret = 0; struct cmd_ds_802_11_radio_control cmd; + int ret = -EINVAL; lbs_deb_enter(LBS_DEB_CMD); cmd.hdr.size = cpu_to_le16(sizeof(cmd)); cmd.action = cpu_to_le16(CMD_ACT_SET); - switch (priv->preamble) { - case CMD_TYPE_SHORT_PREAMBLE: - cmd.control = cpu_to_le16(SET_SHORT_PREAMBLE); - break; - - case CMD_TYPE_LONG_PREAMBLE: - cmd.control = cpu_to_le16(SET_LONG_PREAMBLE); - break; + /* Only v8 and below support setting the preamble */ + if (priv->fwrelease < 0x09000000) { + switch (preamble) { + case RADIO_PREAMBLE_SHORT: + if (!(priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)) + goto out; + /* Fall through */ + case RADIO_PREAMBLE_AUTO: + case RADIO_PREAMBLE_LONG: + cmd.control = cpu_to_le16(preamble); + break; + default: + goto out; + } + } - case CMD_TYPE_AUTO_PREAMBLE: - default: - cmd.control = cpu_to_le16(SET_AUTO_PREAMBLE); - break; + if (radio_on) + cmd.control |= cpu_to_le16(0x1); + else { + cmd.control &= cpu_to_le16(~0x1); + priv->txpower_cur = 0; } - if (priv->radioon) - cmd.control |= cpu_to_le16(TURN_ON_RF); - else - cmd.control &= cpu_to_le16(~TURN_ON_RF); + lbs_deb_cmd("RADIO_CONTROL: radio %s, preamble %d\n", + radio_on ? "ON" : "OFF", preamble); - lbs_deb_cmd("RADIO_SET: radio %d, preamble %d\n", priv->radioon, - priv->preamble); + priv->radio_on = radio_on; ret = lbs_cmd_with_response(priv, CMD_802_11_RADIO_CONTROL, &cmd); +out: lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret); return ret; } diff --git a/drivers/net/wireless/libertas/cmd.h b/drivers/net/wireless/libertas/cmd.h index 6fba8ef..11ac996 100644 --- a/drivers/net/wireless/libertas/cmd.h +++ b/drivers/net/wireless/libertas/cmd.h @@ -65,4 +65,6 @@ int lbs_get_tx_power(struct lbs_private *priv, s16 *curlevel, s16 *minlevel, s16 *maxlevel); int lbs_set_tx_power(struct lbs_private *priv, s16 dbm); +int lbs_set_radio(struct lbs_private *priv, u8 preamble, u8 radio_on); + #endif /* _LBS_CMD_H */ diff --git a/drivers/net/wireless/libertas/decl.h b/drivers/net/wireless/libertas/decl.h index a8ac974..1a8888c 100644 --- a/drivers/net/wireless/libertas/decl.h +++ b/drivers/net/wireless/libertas/decl.h @@ -34,7 +34,6 @@ int lbs_process_event(struct lbs_private *priv, u32 event); void lbs_queue_event(struct lbs_private *priv, u32 event); void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx); -int lbs_set_radio_control(struct lbs_private *priv); u32 lbs_fw_index_to_data_rate(u8 index); u8 lbs_data_rate_to_fw_index(u32 rate); diff --git a/drivers/net/wireless/libertas/dev.h b/drivers/net/wireless/libertas/dev.h index 560d4d3..fd59e18 100644 --- a/drivers/net/wireless/libertas/dev.h +++ b/drivers/net/wireless/libertas/dev.h @@ -293,8 +293,7 @@ struct lbs_private { u16 nextSNRNF; u16 numSNRNF; - u8 radioon; - u32 preamble; + u8 radio_on; /** data rate stuff */ u8 cur_rate; diff --git a/drivers/net/wireless/libertas/host.h b/drivers/net/wireless/libertas/host.h index caebb9b..da618fc 100644 --- a/drivers/net/wireless/libertas/host.h +++ b/drivers/net/wireless/libertas/host.h @@ -152,11 +152,6 @@ #define CMD_ACT_MAC_ALL_MULTICAST_ENABLE 0x0100 #define CMD_ACT_MAC_STRICT_PROTECTION_ENABLE 0x0400 -/* Define action or option for CMD_802_11_RADIO_CONTROL */ -#define CMD_TYPE_AUTO_PREAMBLE 0x0001 -#define CMD_TYPE_SHORT_PREAMBLE 0x0002 -#define CMD_TYPE_LONG_PREAMBLE 0x0003 - /* Event flags for CMD_802_11_SUBSCRIBE_EVENT */ #define CMD_SUBSCRIBE_RSSI_LOW 0x0001 #define CMD_SUBSCRIBE_SNR_LOW 0x0002 @@ -165,13 +160,9 @@ #define CMD_SUBSCRIBE_RSSI_HIGH 0x0010 #define CMD_SUBSCRIBE_SNR_HIGH 0x0020 -#define TURN_ON_RF 0x01 -#define RADIO_ON 0x01 -#define RADIO_OFF 0x00 - -#define SET_AUTO_PREAMBLE 0x05 -#define SET_SHORT_PREAMBLE 0x03 -#define SET_LONG_PREAMBLE 0x01 +#define RADIO_PREAMBLE_LONG 0x00 +#define RADIO_PREAMBLE_SHORT 0x02 +#define RADIO_PREAMBLE_AUTO 0x04 /* Define action or option for CMD_802_11_RF_CHANNEL */ #define CMD_OPT_802_11_RF_CHANNEL_GET 0x00 diff --git a/drivers/net/wireless/libertas/main.c b/drivers/net/wireless/libertas/main.c index 5e4c4e4..dafe62e 100644 --- a/drivers/net/wireless/libertas/main.c +++ b/drivers/net/wireless/libertas/main.c @@ -1051,7 +1051,7 @@ static int lbs_init_adapter(struct lbs_private *priv) priv->mode = IW_MODE_INFRA; priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL; priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON; - priv->radioon = RADIO_ON; + priv->radio_on = 1; priv->enablehwauto = 1; priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE; priv->psmode = LBS802_11POWERMODECAM; diff --git a/drivers/net/wireless/libertas/scan.c b/drivers/net/wireless/libertas/scan.c index 4b27456..8f66903 100644 --- a/drivers/net/wireless/libertas/scan.c +++ b/drivers/net/wireless/libertas/scan.c @@ -944,6 +944,11 @@ int lbs_set_scan(struct net_device *dev, struct iw_request_info *info, lbs_deb_enter(LBS_DEB_WEXT); + if (!priv->radio_on) { + ret = -EINVAL; + goto out; + } + if (!netif_running(dev)) { ret = -ENETDOWN; goto out; diff --git a/drivers/net/wireless/libertas/wext.c b/drivers/net/wireless/libertas/wext.c index 38295ee..4307090 100644 --- a/drivers/net/wireless/libertas/wext.c +++ b/drivers/net/wireless/libertas/wext.c @@ -120,34 +120,6 @@ static struct chan_freq_power *find_cfp_by_band_and_freq( return cfp; } - -/** - * @brief Set Radio On/OFF - * - * @param priv A pointer to struct lbs_private structure - * @option Radio Option - * @return 0 --success, otherwise fail - */ -static int lbs_radio_ioctl(struct lbs_private *priv, u8 option) -{ - int ret = 0; - - lbs_deb_enter(LBS_DEB_WEXT); - - if (priv->radioon != option) { - lbs_deb_wext("switching radio %s\n", option ? "on" : "off"); - priv->radioon = option; - - ret = lbs_prepare_and_send_command(priv, - CMD_802_11_RADIO_CONTROL, - CMD_ACT_SET, - CMD_OPTION_WAITFORRSP, 0, NULL); - } - - lbs_deb_leave_args(LBS_DEB_WEXT, "ret %d", ret); - return ret; -} - /** * @brief Copy active data rates based on adapter mode and status * @@ -420,26 +392,30 @@ static int lbs_get_txpow(struct net_device *dev, struct iw_request_info *info, struct iw_param *vwrq, char *extra) { - int ret = 0; struct lbs_private *priv = dev->priv; s16 curlevel = 0; + int ret = 0; lbs_deb_enter(LBS_DEB_WEXT); + if (!priv->radio_on) { + lbs_deb_wext("tx power off\n"); + vwrq->value = 0; + vwrq->disabled = 1; + goto out; + } + ret = lbs_get_tx_power(priv, &curlevel, NULL, NULL); if (ret) goto out; lbs_deb_wext("tx power level %d dbm\n", curlevel); - priv->txpower_cur = curlevel; + vwrq->value = curlevel; vwrq->fixed = 1; - if (priv->radioon) { - vwrq->disabled = 0; - vwrq->flags = IW_TXPOW_DBM; - } else - vwrq->disabled = 1; + vwrq->disabled = 0; + vwrq->flags = IW_TXPOW_DBM; out: lbs_deb_leave_args(LBS_DEB_WEXT, "ret %d", ret); @@ -1839,13 +1815,12 @@ static int lbs_set_txpow(struct net_device *dev, struct iw_request_info *info, lbs_deb_enter(LBS_DEB_WEXT); if (vwrq->disabled) { - lbs_radio_ioctl(priv, RADIO_OFF); + lbs_set_radio(priv, RADIO_PREAMBLE_AUTO, 0); goto out; } if (vwrq->fixed == 0) { /* Auto power control */ - priv->preamble = CMD_TYPE_AUTO_PREAMBLE; dbm = priv->txpower_max; } else { /* Userspace check in iwrange if it should use dBm or mW, @@ -1867,7 +1842,12 @@ static int lbs_set_txpow(struct net_device *dev, struct iw_request_info *info, } } - lbs_radio_ioctl(priv, RADIO_ON); + /* If the radio was off, turn it on */ + if (!priv->radio_on) { + ret = lbs_set_radio(priv, RADIO_PREAMBLE_AUTO, 1); + if (ret) + goto out; + } lbs_deb_wext("txpower set %d dBm\n", dbm); @@ -1925,6 +1905,11 @@ static int lbs_set_essid(struct net_device *dev, struct iw_request_info *info, lbs_deb_enter(LBS_DEB_WEXT); + if (!priv->radio_on) { + ret = -EINVAL; + goto out; + } + /* Check the size of the string */ if (in_ssid_len > IW_ESSID_MAX_SIZE) { ret = -E2BIG; @@ -2002,6 +1987,11 @@ static int lbs_mesh_set_essid(struct net_device *dev, lbs_deb_enter(LBS_DEB_WEXT); + if (!priv->radio_on) { + ret = -EINVAL; + goto out; + } + /* Check the size of the string */ if (dwrq->length > IW_ESSID_MAX_SIZE) { ret = -E2BIG; @@ -2043,6 +2033,9 @@ static int lbs_set_wap(struct net_device *dev, struct iw_request_info *info, lbs_deb_enter(LBS_DEB_WEXT); + if (!priv->radio_on) + return -EINVAL; + if (awrq->sa_family != ARPHRD_ETHER) return -EINVAL; -- cgit v0.10.2