[PATCH 3/3] wlcore: Add RX_BA_WIN_SIZE_CHANGE_EVENT event

[Maxim Altshul]

This event is used by the Firmware to limit the RX BA win size
for a specific link.

The event handler updates the new size in the mac's sta->sta struct.

BA sessions opened for that link will use the new restricted
win_size. This limitation remains until a new update is received or
until the link is closed.

Signed-off-by: Maxim Altshul <maxim.alts...@ti.com>
---
 drivers/net/wireless/ti/wl18xx/event.c | 22 ++++++++++++++++++++++
 drivers/net/wireless/ti/wl18xx/event.h |  1 +
 drivers/net/wireless/ti/wl18xx/main.c  |  3 ++-
 3 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ti/wl18xx/event.c 
b/drivers/net/wireless/ti/wl18xx/event.c
index 2c5df43..a69be96 100644
--- a/drivers/net/wireless/ti/wl18xx/event.c
+++ b/drivers/net/wireless/ti/wl18xx/event.c
@@ -217,5 +217,27 @@ int wl18xx_process_mailbox_events(struct wl1271 *wl)
        if (vector & FW_LOGGER_INDICATION)
                wlcore_event_fw_logger(wl);
 
+       if (vector & RX_BA_WIN_SIZE_CHANGE_EVENT_ID) {
+               struct wl12xx_vif *wlvif;
+               struct ieee80211_vif *vif;
+               u8 link_id = mbox->rx_ba_link_id;
+               u8 win_size = mbox->rx_ba_win_size;
+               const u8 *addr;
+
+               wlvif = wl->links[link_id].wlvif;
+               vif = wl12xx_wlvif_to_vif(wlvif);
+
+               /* Call MAC routine to update win_size and stop all link active
+                * BA sessions. This routine returns 0 on failure or previous
+                * win_size on success
+                */
+               if (wlvif->bss_type != BSS_TYPE_AP_BSS)
+                       addr = vif->bss_conf.bssid;
+               else
+                       addr = wl->links[link_id].addr;
+
+               ieee80211_change_rx_ba_max_subframes(vif, addr, win_size);
+       }
+
        return 0;
 }
diff --git a/drivers/net/wireless/ti/wl18xx/event.h 
b/drivers/net/wireless/ti/wl18xx/event.h
index ce8ea9c0..4af297f 100644
--- a/drivers/net/wireless/ti/wl18xx/event.h
+++ b/drivers/net/wireless/ti/wl18xx/event.h
@@ -38,6 +38,7 @@ enum {
        REMAIN_ON_CHANNEL_COMPLETE_EVENT_ID      = BIT(18),
        DFS_CHANNELS_CONFIG_COMPLETE_EVENT       = BIT(19),
        PERIODIC_SCAN_REPORT_EVENT_ID            = BIT(20),
+       RX_BA_WIN_SIZE_CHANGE_EVENT_ID           = BIT(21),
        SMART_CONFIG_SYNC_EVENT_ID               = BIT(22),
        SMART_CONFIG_DECODE_EVENT_ID             = BIT(23),
        TIME_SYNC_EVENT_ID                       = BIT(24),
diff --git a/drivers/net/wireless/ti/wl18xx/main.c 
b/drivers/net/wireless/ti/wl18xx/main.c
index 00a04df..dafb2fd 100644
--- a/drivers/net/wireless/ti/wl18xx/main.c
+++ b/drivers/net/wireless/ti/wl18xx/main.c
@@ -1041,7 +1041,8 @@ static int wl18xx_boot(struct wl1271 *wl)
                SMART_CONFIG_SYNC_EVENT_ID |
                SMART_CONFIG_DECODE_EVENT_ID |
                TIME_SYNC_EVENT_ID |
-               FW_LOGGER_INDICATION;
+               FW_LOGGER_INDICATION |
+               RX_BA_WIN_SIZE_CHANGE_EVENT_ID;
 
        wl->ap_event_mask = MAX_TX_FAILURE_EVENT_ID;
 
-- 
2.9.0