staging: r8712u: Merging Realtek's latest (v2.6.6). Tx-code refactoring.

Refactor the TX code to prepare for aggregation.
Signed-off-by: Ali Bahar <ali@internetDog.org>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/rtl8712/rtl8712_xmit.c

@@ -423,31 +423,31 @@ int r8712_xmitframe_complete(struct _adapter *padapter,
 		if (!pxmitbuf)
 			return false;
 	}
-	do {
-		pxmitframe = dequeue_xframe_ex(pxmitpriv, phwxmits, hwentry);
-		if (pxmitframe) {
-			pxmitframe->pxmitbuf = pxmitbuf;
-			pxmitframe->pxmit_urb[0] = pxmitbuf->pxmit_urb[0];
-			pxmitframe->buf_addr = pxmitbuf->pbuf;
-			if (pxmitframe->frame_tag == DATA_FRAMETAG) {
-				if (pxmitframe->attrib.priority <= 15)
-					res = r8712_xmitframe_coalesce(padapter,
-					      pxmitframe->pkt, pxmitframe);
-				/* always return ndis_packet after
-				 *  r8712_xmitframe_coalesce */
-				r8712_xmit_complete(padapter, pxmitframe);
-			}
-			if (res == _SUCCESS)
-				dump_xframe(padapter, pxmitframe);
-			else
-				r8712_free_xmitframe_ex(pxmitpriv, pxmitframe);
-			xcnt++;
-		} else {
-			r8712_free_xmitbuf(pxmitpriv, pxmitbuf);
-			return false;
+	/* 1st frame dequeued */
+	pxmitframe = dequeue_xframe_ex(pxmitpriv, phwxmits, hwentry);
+	/* need to remember the 1st frame */
+	if (pxmitframe != NULL) {
+
+
+		xmitframe_xmitbuf_attach(pxmitframe, pxmitbuf);
+		if (pxmitframe->frame_tag == DATA_FRAMETAG) {
+			if (pxmitframe->attrib.priority <= 15)
+				res = r8712_xmitframe_coalesce(padapter,
+					pxmitframe->pkt, pxmitframe);
+			/* always return ndis_packet after
+			 * r8712_xmitframe_coalesce */
+			r8712_xmit_complete(padapter, pxmitframe);
 		}
-		break;
-	} while (0);
+		if (res == _SUCCESS)
+			dump_xframe(padapter, pxmitframe);
+		else
+			r8712_free_xmitframe_ex(pxmitpriv, pxmitframe);
+		xcnt++;
+
+	} else { /* pxmitframe == NULL && p2ndxmitframe == NULL */
+		r8712_free_xmitbuf(pxmitpriv, pxmitbuf);
+		return false;
+	}
 	return true;
 }
 

drivers/staging/rtl8712/rtl871x_xmit.c

@@ -1011,6 +1011,19 @@ static void init_hwxmits(struct hw_xmit *phwxmit, sint entry)
 	}
 }
 
+void xmitframe_xmitbuf_attach(struct xmit_frame *pxmitframe,
+			struct xmit_buf *pxmitbuf)
+{
+	/* pxmitbuf attach to pxmitframe */
+	pxmitframe->pxmitbuf = pxmitbuf;
+	/* urb and irp connection */
+	pxmitframe->pxmit_urb[0] = pxmitbuf->pxmit_urb[0];
+	/* buffer addr assoc */
+	pxmitframe->buf_addr = pxmitbuf->pbuf;
+	/* pxmitframe attach to pxmitbuf */
+	pxmitbuf->priv_data = pxmitframe;
+}
+
 /*
  * tx_action == 0 == no frames to transmit
  * tx_action > 0 ==> we have frames to transmit
@@ -1042,9 +1055,7 @@ int r8712_pre_xmit(struct _adapter *padapter, struct xmit_frame *pxmitframe)
 	} else { /*dump packet directly*/
 		spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
 		ret = true;
-		pxmitframe->pxmitbuf = pxmitbuf;
-		pxmitframe->pxmit_urb[0] = pxmitbuf->pxmit_urb[0];
-		pxmitframe->buf_addr = pxmitbuf->pbuf;
+		xmitframe_xmitbuf_attach(pxmitframe, pxmitbuf);
 		r8712_xmit_direct(padapter, pxmitframe);
 	}
 	return ret;

drivers/staging/rtl8712/rtl871x_xmit.h

@@ -135,7 +135,9 @@ struct xmit_buf {
 
 	u8 *pallocated_buf;
 	u8 *pbuf;
+	void *priv_data;
 	struct urb *pxmit_urb[8];
+	u32 aggr_nr;
 };
 
 struct xmit_frame {
@@ -280,6 +282,9 @@ int r8712_xmit_enqueue(struct _adapter *padapter,
 int r8712_xmit_direct(struct _adapter *padapter, struct xmit_frame *pxmitframe);
 void r8712_xmit_bh(void *priv);
 
+void xmitframe_xmitbuf_attach(struct xmit_frame *pxmitframe,
+			struct xmit_buf *pxmitbuf);
+
 #include "rtl8712_xmit.h"
 
 #endif	/*_RTL871X_XMIT_H_*/