wl1271: Prevent dropping of TX frames in joins

The wl1271 uses a session counter in CMD_JOIN and TX frame descriptors. This
counter is used to determine which frames to drop when the CMD_JOIN is
executed.

The driver executes CMD_JOIN multiple times upon association and sometimes
disassociation, and we don't want any frames to get lost.

Fix this by incrementing the session counter only when leaving idle (not every
CMD_JOIN as before.) Also, remove the TX flush flag from the CMD_JOIN options.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 5 insertions, 6 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271_cmd.c b/drivers/net/wireless/wl12xx/wl1271_cmd.c
index d7bcce887c41..05b6d8a4aea2 100644
--- a/drivers/net/wireless/wl12xx/wl1271_cmd.c
+++ b/drivers/net/wireless/wl12xx/wl1271_cmd.c
@@ -336,12 +336,6 @@ int wl1271_cmd_join(struct wl1271 *wl, u8 bss_type)
         join->channel = wl->channel;
         join->ssid_len = wl->ssid_len;
         memcpy(join->ssid, wl->ssid, wl->ssid_len);
-        join->ctrl = WL1271_JOIN_CMD_CTRL_TX_FLUSH;
-
-        /* increment the session counter */
-        wl->session_counter++;
-        if (wl->session_counter >= SESSION_COUNTER_MAX)
-                wl->session_counter = 0;
 
         join->ctrl |= wl->session_counter << WL1271_JOIN_CMD_TX_SESSION_OFFSET;
 
diff --git a/drivers/net/wireless/wl12xx/wl1271_main.c b/drivers/net/wireless/wl12xx/wl1271_main.c
index 032cb5de908c..108a3e2a58fd 100644
--- a/drivers/net/wireless/wl12xx/wl1271_main.c
+++ b/drivers/net/wireless/wl12xx/wl1271_main.c
@@ -1135,6 +1135,11 @@ static int wl1271_dummy_join(struct wl1271 *wl)
 
         memcpy(wl->bssid, dummy_bssid, ETH_ALEN);
 
+        /* increment the session counter */
+        wl->session_counter++;
+        if (wl->session_counter >= SESSION_COUNTER_MAX)
+                wl->session_counter = 0;
+
         /* pass through frames from all BSS */
         wl1271_configure_filters(wl, FIF_OTHER_BSS);