| From | Pali Rohár <> | Subject | [PATCH 10/16] wl1251: fix channel switching in monitor mode | Date | Sat, 26 Oct 2013 22:34:09 +0200 |
| |
From: David Gnedt <david.gnedt@davizone.at>
Use the ENABLE_RX command for channel switching when no interface is present (monitor mode only). The advantage of ENABLE_RX is that it leaves the tx data path disabled in firmware, whereas the usual JOIN command seems to transmit some frames at firmware level.
Signed-off-by: David Gnedt <david.gnedt@davizone.at> --- drivers/net/wireless/ti/wl1251/main.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ti/wl1251/main.c b/drivers/net/wireless/ti/wl1251/main.c index 62cb374..7e6b6d1 100644 --- a/drivers/net/wireless/ti/wl1251/main.c +++ b/drivers/net/wireless/ti/wl1251/main.c @@ -611,8 +611,19 @@ static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed) if (channel != wl->channel) { wl->channel = channel; - ret = wl1251_join(wl, wl->bss_type, wl->channel, - wl->beacon_int, wl->dtim_period); + /* + * Use ENABLE_RX command for channel switching when no + * interface is present (monitor mode only). + * This leaves the tx path disabled in firmware, whereas + * the usual JOIN command seems to transmit some frames + * at firmware level. + */ + if (wl->vif == NULL) { + ret = wl1251_cmd_data_path_rx(wl, wl->channel, 1); + } else { + ret = wl1251_join(wl, wl->bss_type, wl->channel, + wl->beacon_int, wl->dtim_period); + } if (ret < 0) goto out_sleep; } -- 1.7.10.4
|