wl1271: add support for HW TX fragmentation

Indicate to mac80211 we support HW fragmentation.
Support updates of the fragmentation threshold via the
set_frag_threshold callback.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>

1 files changed, 30 insertions, 1 deletions

diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c
index 6af270d382bb..31f0e2f6ffc3 100644
--- a/drivers/net/wireless/wl12xx/main.c
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -425,7 +425,7 @@ static int wl1271_plt_init(struct wl1271 *wl)
                 goto out_free_memmap;
 
         /* Default fragmentation threshold */
-        ret = wl1271_acx_frag_threshold(wl);
+        ret = wl1271_acx_frag_threshold(wl, wl->conf.tx.frag_threshold);
         if (ret < 0)
                 goto out_free_memmap;
 
@@ -1745,6 +1745,34 @@ out:
         return ret;
 }
 
+static int wl1271_op_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
+{
+        struct wl1271 *wl = hw->priv;
+        int ret = 0;
+
+        mutex_lock(&wl->mutex);
+
+        if (unlikely(wl->state == WL1271_STATE_OFF)) {
+                ret = -EAGAIN;
+                goto out;
+        }
+
+        ret = wl1271_ps_elp_wakeup(wl, false);
+        if (ret < 0)
+                goto out;
+
+        ret = wl1271_acx_frag_threshold(wl, (u16)value);
+        if (ret < 0)
+                wl1271_warning("wl1271_op_set_frag_threshold failed: %d", ret);
+
+        wl1271_ps_elp_sleep(wl);
+
+out:
+        mutex_unlock(&wl->mutex);
+
+        return ret;
+}
+
 static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 {
         struct wl1271 *wl = hw->priv;
@@ -2421,6 +2449,7 @@ static const struct ieee80211_ops wl1271_ops = {
         .set_key = wl1271_op_set_key,
         .hw_scan = wl1271_op_hw_scan,
         .bss_info_changed = wl1271_op_bss_info_changed,
+        .set_frag_threshold = wl1271_op_set_frag_threshold,
         .set_rts_threshold = wl1271_op_set_rts_threshold,
         .conf_tx = wl1271_op_conf_tx,
         .get_tsf = wl1271_op_get_tsf,