mwifiex: channel switch handling for station
After receiving channel switch announcement from AP, scan and
association on that channel is blocked for DFS_CHAN_MOVE_TIME
(10 seconds). Hence station will be able to connect to the AP,
once it is moved to new channel.
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Paul Stewart <pstew@chromium.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/mwifiex/scan.c b/drivers/net/wireless/mwifiex/scan.c
index 284d68b..c447d9b 100644
--- a/drivers/net/wireless/mwifiex/scan.c
+++ b/drivers/net/wireless/mwifiex/scan.c
@@ -575,6 +575,9 @@
return -1;
}
+ /* Check csa channel expiry before preparing scan list */
+ mwifiex_11h_get_csa_closed_channel(priv);
+
chan_tlv_out->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
/* Set the temp channel struct pointer to the start of the desired
@@ -604,6 +607,11 @@
while (tlv_idx < max_chan_per_scan &&
tmp_chan_list->chan_number && !done_early) {
+ if (tmp_chan_list->chan_number == priv->csa_chan) {
+ tmp_chan_list++;
+ continue;
+ }
+
dev_dbg(priv->adapter->dev,
"info: Scan: Chan(%3d), Radio(%d),"
" Mode(%d, %d), Dur(%d)\n",
@@ -1594,6 +1602,9 @@
goto check_next_scan;
}
+ /* Check csa channel expiry before parsing scan response */
+ mwifiex_11h_get_csa_closed_channel(priv);
+
bytes_left = le16_to_cpu(scan_rsp->bss_descript_size);
dev_dbg(adapter->dev, "info: SCAN_RESP: bss_descript_size %d\n",
bytes_left);
@@ -1746,6 +1757,13 @@
struct ieee80211_channel *chan;
u8 band;
+ /* Skip entry if on csa closed channel */
+ if (channel == priv->csa_chan) {
+ dev_dbg(adapter->dev,
+ "Dropping entry on csa closed channel\n");
+ continue;
+ }
+
band = BAND_G;
if (chan_band_tlv) {
chan_band =