[PATCH] libertas: move channel changing into association framework
Handle channel changes through the deferred association framework rather than directly. Fixes errors when setting channels along with other parameters like mode and SSID. Signed-off-by: Dan Williams <dcbw@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Dan Williams
John W. Linville
Родитель
d43fb8ee3d
Коммит
ef9a264b7a
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@ -22,6 +22,10 @@ static int assoc_helper_essid(wlan_private *priv,
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lbs_deb_enter(LBS_DEB_ASSOC);
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/* FIXME: take channel into account when picking SSIDs if a channel
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* is set.
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*/
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lbs_deb_assoc("New SSID requested: %s\n", assoc_req->ssid.ssid);
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if (assoc_req->mode == IW_MODE_INFRA) {
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if (adapter->prescan) {
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@ -158,6 +162,69 @@ done:
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}
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static int update_channel(wlan_private * priv)
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{
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/* the channel in f/w could be out of sync, get the current channel */
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return libertas_prepare_and_send_command(priv, cmd_802_11_rf_channel,
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cmd_opt_802_11_rf_channel_get,
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cmd_option_waitforrsp, 0, NULL);
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}
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static int assoc_helper_channel(wlan_private *priv,
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struct assoc_request * assoc_req)
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{
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wlan_adapter *adapter = priv->adapter;
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int ret = 0;
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lbs_deb_enter(LBS_DEB_ASSOC);
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ret = update_channel(priv);
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if (ret < 0) {
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lbs_deb_assoc("ASSOC: channel: error getting channel.");
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}
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if (assoc_req->channel == adapter->curbssparams.channel)
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goto done;
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lbs_deb_assoc("ASSOC: channel: %d -> %d\n",
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adapter->curbssparams.channel, assoc_req->channel);
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ret = libertas_prepare_and_send_command(priv, cmd_802_11_rf_channel,
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cmd_opt_802_11_rf_channel_set,
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cmd_option_waitforrsp, 0, &assoc_req->channel);
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if (ret < 0) {
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lbs_deb_assoc("ASSOC: channel: error setting channel.");
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}
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ret = update_channel(priv);
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if (ret < 0) {
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lbs_deb_assoc("ASSOC: channel: error getting channel.");
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}
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if (assoc_req->channel != adapter->curbssparams.channel) {
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lbs_deb_assoc("ASSOC: channel: failed to update channel to %d",
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assoc_req->channel);
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goto done;
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}
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if ( assoc_req->secinfo.wep_enabled
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&& (assoc_req->wep_keys[0].len
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|| assoc_req->wep_keys[1].len
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|| assoc_req->wep_keys[2].len
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|| assoc_req->wep_keys[3].len)) {
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/* Make sure WEP keys are re-sent to firmware */
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set_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags);
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}
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/* Must restart/rejoin adhoc networks after channel change */
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set_bit(ASSOC_FLAG_SSID, &assoc_req->flags);
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done:
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lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
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return ret;
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}
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static int assoc_helper_wep_keys(wlan_private *priv,
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struct assoc_request * assoc_req)
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{
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@ -334,6 +401,11 @@ static int should_stop_adhoc(wlan_adapter *adapter,
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return 1;
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}
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if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
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if (assoc_req->channel != adapter->curbssparams.channel)
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return 1;
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}
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return 0;
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}
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@ -423,6 +495,15 @@ lbs_deb_assoc("ASSOC(:%d) mode: ret = %d\n", __LINE__, ret);
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}
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}
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if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
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ret = assoc_helper_channel(priv, assoc_req);
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if (ret) {
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lbs_deb_assoc("ASSOC(:%d) channel: ret = %d\n",
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__LINE__, ret);
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goto out;
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}
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}
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if ( test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)
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|| test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags)) {
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ret = assoc_helper_wep_keys(priv, assoc_req);
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@ -287,7 +287,6 @@ struct _wlan_adapter {
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u32 txantenna;
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u32 rxantenna;
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u8 adhocchannel;
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u32 fragthsd;
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u32 rtsthsd;
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@ -220,8 +220,6 @@ static void wlan_init_adapter(wlan_private * priv)
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memset(&adapter->capinfo, 0, sizeof(adapter->capinfo));
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adapter->capinfo.shortpreamble = SHORT_PREAMBLE_ALLOWED;
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adapter->adhocchannel = DEFAULT_AD_HOC_CHANNEL;
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adapter->psmode = wlan802_11powermodecam;
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adapter->multipledtim = MRVDRV_DEFAULT_MULTIPLE_DTIM;
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@ -158,7 +158,6 @@ int libertas_start_adhoc_network(wlan_private * priv, struct WLAN_802_11_SSID *a
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libertas_set_radio_control(priv);
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lbs_deb_join("Adhoc channel = %d\n", adapter->adhocchannel);
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lbs_deb_join("curbssparams.channel = %d\n",
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adapter->curbssparams.channel);
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lbs_deb_join("curbssparams.band = %d\n", adapter->curbssparams.band);
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@ -513,15 +512,13 @@ int libertas_cmd_80211_ad_hoc_start(wlan_private * priv,
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adhs->phyparamset.dsparamset.elementid = DS_PARA_IE_ID;
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adhs->phyparamset.dsparamset.len = DS_PARA_IE_LEN;
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WARN_ON(!adapter->adhocchannel);
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WARN_ON(!adapter->curbssparams.channel);
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lbs_deb_join("ADHOC_S_CMD: Creating ADHOC on channel %d\n",
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adapter->adhocchannel);
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adapter->curbssparams.channel);
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adapter->curbssparams.channel = adapter->adhocchannel;
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pbssdesc->channel = adapter->adhocchannel;
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adhs->phyparamset.dsparamset.currentchan = adapter->adhocchannel;
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pbssdesc->channel = adapter->curbssparams.channel;
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adhs->phyparamset.dsparamset.currentchan = adapter->curbssparams.channel;
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memcpy(&pbssdesc->phyparamset,
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&adhs->phyparamset, sizeof(union ieeetypes_phyparamset));
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@ -909,7 +906,7 @@ int libertas_ret_80211_ad_hoc_start(wlan_private * priv,
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wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
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lbs_deb_join("ADHOC_RESP: - Joined/Started Ad Hoc\n");
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lbs_deb_join("ADHOC_RESP: channel = %d\n", adapter->adhocchannel);
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lbs_deb_join("ADHOC_RESP: channel = %d\n", adapter->curbssparams.channel);
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lbs_deb_join("ADHOC_RESP: BSSID = %02x:%02x:%02x:%02x:%02x:%02x\n",
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padhocresult->BSSID[0], padhocresult->BSSID[1],
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padhocresult->BSSID[2], padhocresult->BSSID[3],
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@ -157,103 +157,6 @@ static struct chan_freq_power *find_cfp_by_band_and_freq(wlan_adapter * adapter,
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return cfp;
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}
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static int updatecurrentchannel(wlan_private * priv)
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{
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int ret;
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/*
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** the channel in f/w could be out of sync, get the current channel
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*/
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ret = libertas_prepare_and_send_command(priv, cmd_802_11_rf_channel,
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cmd_opt_802_11_rf_channel_get,
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cmd_option_waitforrsp, 0, NULL);
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lbs_deb_wext("current channel %d\n",
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priv->adapter->curbssparams.channel);
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return ret;
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}
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static int setcurrentchannel(wlan_private * priv, int channel)
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{
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lbs_deb_wext("set channel %d\n", channel);
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/*
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** Current channel is not set to adhocchannel requested, set channel
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*/
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return (libertas_prepare_and_send_command(priv, cmd_802_11_rf_channel,
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cmd_opt_802_11_rf_channel_set,
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cmd_option_waitforrsp, 0, &channel));
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}
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static int changeadhocchannel(wlan_private * priv, int channel)
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{
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int ret = 0;
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struct WLAN_802_11_SSID curadhocssid;
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struct bss_descriptor * join_bss = NULL;
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wlan_adapter *adapter = priv->adapter;
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adapter->adhocchannel = channel;
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updatecurrentchannel(priv);
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if (adapter->curbssparams.channel == adapter->adhocchannel) {
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/* adhocchannel is set to the current channel already */
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goto out;
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}
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lbs_deb_wext("updating channel from %d to %d\n",
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adapter->curbssparams.channel, adapter->adhocchannel);
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setcurrentchannel(priv, adapter->adhocchannel);
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updatecurrentchannel(priv);
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if (adapter->curbssparams.channel != adapter->adhocchannel) {
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lbs_deb_wext("failed to updated channel to %d, channel = %d\n",
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adapter->adhocchannel, adapter->curbssparams.channel);
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ret = -1;
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goto out;
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}
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if (adapter->connect_status != libertas_connected)
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goto out;
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lbs_deb_wext("channel changed while in IBSS\n");
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/* Copy the current ssid */
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memcpy(&curadhocssid, &adapter->curbssparams.ssid,
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sizeof(struct WLAN_802_11_SSID));
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/* Exit Adhoc mode */
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lbs_deb_wext("in changeadhocchannel(): sending Adhoc stop\n");
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ret = libertas_stop_adhoc_network(priv);
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if (ret)
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goto out;
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/* Scan for the network, do not save previous results. Stale
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* scan data will cause us to join a non-existant adhoc network
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*/
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libertas_send_specific_SSID_scan(priv, &curadhocssid, 1);
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/* find out the BSSID that matches the current SSID */
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join_bss = libertas_find_SSID_in_list(adapter, &curadhocssid, NULL,
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IW_MODE_ADHOC);
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if (join_bss) {
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lbs_deb_wext("SSID found in list, so join\n");
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libertas_join_adhoc_network(priv, join_bss);
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} else {
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lbs_deb_wext("SSID not found in list, "
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"creating AdHoc with SSID '%s'\n",
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curadhocssid.ssid);
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libertas_start_adhoc_network(priv, &curadhocssid);
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}
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out:
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lbs_deb_leave_args(LBS_DEB_WEXT, "ret %d", ret);
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return ret;
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}
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/**
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* @brief Set Radio On/OFF
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@ -1228,82 +1131,59 @@ out:
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static int wlan_set_freq(struct net_device *dev, struct iw_request_info *info,
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struct iw_freq *fwrq, char *extra)
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{
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int ret = 0;
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int ret = -EINVAL;
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wlan_private *priv = dev->priv;
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wlan_adapter *adapter = priv->adapter;
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int rc = -EINPROGRESS; /* Call commit handler */
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struct chan_freq_power *cfp;
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struct assoc_request * assoc_req;
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lbs_deb_enter(LBS_DEB_WEXT);
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/*
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* If setting by frequency, convert to a channel
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*/
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if (fwrq->e == 1) {
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mutex_lock(&adapter->lock);
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assoc_req = wlan_get_association_request(adapter);
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if (!assoc_req) {
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ret = -ENOMEM;
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goto out;
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}
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/* If setting by frequency, convert to a channel */
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if (fwrq->e == 1) {
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long f = fwrq->m / 100000;
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int c = 0;
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cfp = find_cfp_by_band_and_freq(adapter, 0, f);
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if (!cfp) {
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lbs_deb_wext("invalid freq %ld\n", f);
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return -EINVAL;
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goto out;
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}
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c = (int)cfp->channel;
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if (c < 0)
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return -EINVAL;
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fwrq->e = 0;
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fwrq->m = c;
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fwrq->m = (int) cfp->channel;
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}
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/*
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* Setting by channel number
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*/
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/* Setting by channel number */
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if (fwrq->m > 1000 || fwrq->e > 0) {
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rc = -EOPNOTSUPP;
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} else {
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int channel = fwrq->m;
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cfp = libertas_find_cfp_by_band_and_channel(adapter, 0, channel);
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if (!cfp) {
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rc = -EINVAL;
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} else {
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if (adapter->mode == IW_MODE_ADHOC) {
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rc = changeadhocchannel(priv, channel);
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/* If station is WEP enabled, send the
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* command to set WEP in firmware
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*/
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if (adapter->secinfo.wep_enabled) {
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lbs_deb_wext("set_freq: WEP enabled\n");
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ret = libertas_prepare_and_send_command(priv,
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cmd_802_11_set_wep,
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cmd_act_add,
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cmd_option_waitforrsp,
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0,
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NULL);
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if (ret) {
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rc = ret;
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goto out;
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}
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adapter->currentpacketfilter |=
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cmd_act_mac_wep_enable;
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libertas_set_mac_packet_filter(priv);
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}
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} else {
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rc = -EOPNOTSUPP;
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}
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}
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goto out;
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}
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cfp = libertas_find_cfp_by_band_and_channel(adapter, 0, fwrq->m);
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if (!cfp) {
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goto out;
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}
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assoc_req->channel = fwrq->m;
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ret = 0;
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out:
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lbs_deb_leave_args(LBS_DEB_WEXT, "ret %d", rc);
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return rc;
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if (ret == 0) {
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set_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags);
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wlan_postpone_association_work(priv);
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} else {
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wlan_cancel_association_work(priv);
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}
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mutex_unlock(&adapter->lock);
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lbs_deb_leave_args(LBS_DEB_WEXT, "ret %d", ret);
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return ret;
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}
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/**
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