[rtems-libbsd commit] if_dwc: Increase DMA descriptor count

[Sebastian Huber]

Module:    rtems-libbsd
Branch:    master
Commit:    ebc797fc841266df80dbf91af86bfcd646b4b79a
Changeset: http://git.rtems.org/rtems-libbsd/commit/?id=ebc797fc841266df80dbf91af86bfcd646b4b79a

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Tue Apr  7 13:53:16 2015 +0200

if_dwc: Increase DMA descriptor count

This prevents some packet loss under heavy load conditions.

---

 freebsd/sys/dev/dwc/if_dwc.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/freebsd/sys/dev/dwc/if_dwc.c b/freebsd/sys/dev/dwc/if_dwc.c
index 3caff4a..d043e8e 100644
--- a/freebsd/sys/dev/dwc/if_dwc.c
+++ b/freebsd/sys/dev/dwc/if_dwc.c
@@ -153,14 +153,10 @@ struct dwc_hwdesc
 #ifndef __rtems__
 #define	RX_DESC_COUNT	1024
 #else /* __rtems__ */
-#define	RX_DESC_COUNT	64
+#define	RX_DESC_COUNT	256
 #endif /* __rtems__ */
 #define	RX_DESC_SIZE	(sizeof(struct dwc_hwdesc) * RX_DESC_COUNT)
-#ifndef __rtems__
 #define	TX_DESC_COUNT	1024
-#else /* __rtems__ */
-#define	TX_DESC_COUNT	64
-#endif /* __rtems__ */
 #define	TX_DESC_SIZE	(sizeof(struct dwc_hwdesc) * TX_DESC_COUNT)
 #define TX_MAX_DMA_SEGS	8	/* maximum segs in a tx mbuf dma */