wl18xx: implement hw op for getting rx packet data length

Implement the 18xx-specific way for getting the length of a Rx packet.

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

diff --git a/drivers/net/wireless/ti/wl18xx/main.c b/drivers/net/wireless/ti/wl18xx/main.c
index fef872608e00600d1e01d05faa09229e70202eeb..40ed53c028665b1fdc9f3ddafeddd1d5fa7865b8 100644 (file)
--- a/drivers/net/wireless/ti/wl18xx/main.c
+++ b/drivers/net/wireless/ti/wl18xx/main.c
@@ -458,6 +458,17 @@ wl18xx_get_rx_buf_align(struct wl1271 *wl, u32 rx_desc)
        return WLCORE_RX_BUF_ALIGNED;
 }
 
+static u32 wl18xx_get_rx_packet_len(struct wl1271 *wl, void *rx_data,
+                                   u32 data_len)
+{
+       struct wl1271_rx_descriptor *desc = rx_data;
+
+       /* invalid packet */
+       if (data_len < sizeof(*desc))
+               return 0;
+
+       return data_len - sizeof(*desc);
+}
 
 static struct wlcore_ops wl18xx_ops = {
        .identify_chip  = wl18xx_identify_chip,
@@ -468,6 +479,7 @@ static struct wlcore_ops wl18xx_ops = {
        .set_tx_desc_blocks = wl18xx_set_tx_desc_blocks,
        .set_tx_desc_data_len = wl18xx_set_tx_desc_data_len,
        .get_rx_buf_align = wl18xx_get_rx_buf_align,
+       .get_rx_packet_len = wl18xx_get_rx_packet_len,
 };
 
 int __devinit wl18xx_probe(struct platform_device *pdev)