When an ath6kl STA vif is issued a connect command, the firmware will
disconnect all other beaconing vifs in preparation for a potential
channel switch. The case where the connect fails is currently unhandled,
so if a connection attempt on a STA vif fails and any vifs were waiting
for a new channel, simply restart the concurrent vifs on their previous
channel.
Requires that we start tracking the last issued channel in ar->last_ch,
which is valid since ath6kl only supports 1 channel at a time.
Also clear the beaconing vif's want_ch_switch bit regardless of whether
channel switch succeeds, to stop recommitting the same failed profile.
Signed-off-by: Thomas Pedersen <c_tpeder@xxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath6kl/core.h | 1 +
drivers/net/wireless/ath/ath6kl/main.c | 18 ++++++++++++------
2 files changed, 13 insertions(+), 6 deletions(-)
diff --git a/drivers/net/wireless/ath/ath6kl/core.h b/drivers/net/wireless/ath/ath6kl/core.h
index eb86b31..baf149e 100644
--- a/drivers/net/wireless/ath/ath6kl/core.h
+++ b/drivers/net/wireless/ath/ath6kl/core.h
@@ -699,6 +699,7 @@ struct ath6kl {
struct ath6kl_req_key ap_mode_bkey;
struct sk_buff_head mcastpsq;
u32 want_ch_switch;
+ u16 last_ch;
/*
* FIXME: protects access to mcastpsq but is actually useless as
diff --git a/drivers/net/wireless/ath/ath6kl/main.c b/drivers/net/wireless/ath/ath6kl/main.c
index 6beffde..eca4d47 100644
--- a/drivers/net/wireless/ath/ath6kl/main.c
+++ b/drivers/net/wireless/ath/ath6kl/main.c
@@ -441,12 +441,9 @@ void ath6kl_connect_ap_mode_bss(struct ath6kl_vif *vif, u16 channel)
break;
}
- if (ar->want_ch_switch & (1 << vif->fw_vif_idx)) {
- ar->want_ch_switch &= ~(1 << vif->fw_vif_idx);
+ if (ar->last_ch != channel)
/* we actually don't know the phymode, default to HT20 */
- ath6kl_cfg80211_ch_switch_notify(vif, channel,
- WMI_11G_HT20);
- }
+ ath6kl_cfg80211_ch_switch_notify(vif, channel, WMI_11G_HT20);
ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, NONE_BSS_FILTER, 0);
set_bit(CONNECTED, &vif->flags);
@@ -633,6 +630,9 @@ static void ath6kl_check_ch_switch(struct ath6kl *ar, u16 channel)
if (ar->want_ch_switch & (1 << vif->fw_vif_idx))
res = ath6kl_commit_ch_switch(vif, channel);
+ /* if channel switch failed, oh well we tried */
+ ar->want_ch_switch &= ~(1 << vif->fw_vif_idx);
+
if (res)
ath6kl_err("channel switch failed nw_type %d res %d\n",
vif->nw_type, res);
@@ -986,8 +986,11 @@ void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid,
if (vif->nw_type == AP_NETWORK) {
/* disconnect due to other STA vif switching channels */
if (reason == BSS_DISCONNECTED &&
- prot_reason_status == WMI_AP_REASON_STA_ROAM)
+ prot_reason_status == WMI_AP_REASON_STA_ROAM) {
ar->want_ch_switch |= 1 << vif->fw_vif_idx;
+ /* bail back to this channel if STA vif fails connect */
+ ar->last_ch = le16_to_cpu(vif->profile.ch);
+ }
if (!ath6kl_remove_sta(ar, bssid, prot_reason_status))
return;
@@ -1046,6 +1049,9 @@ void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid,
}
}
+ /* restart disconnected concurrent vifs waiting for new channel */
+ ath6kl_check_ch_switch(ar, ar->last_ch);
+
/* update connect & link status atomically */
spin_lock_bh(&vif->if_lock);
clear_bit(CONNECTED, &vif->flags);
--
1.7.4.1
--
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