[rtems-libbsd commit] if_ffec: Reduce buffer size

Christian Mauderer christianm at rtems.org
Tue Jun 7 07:03:46 UTC 2022


Module:    rtems-libbsd
Branch:    master
Commit:    91afe3a020c871dd425b838d5535c8418ad085b6
Changeset: http://git.rtems.org/rtems-libbsd/commit/?id=91afe3a020c871dd425b838d5535c8418ad085b6

Author:    Christian Mauderer <christian.mauderer at embedded-brains.de>
Date:      Fri May 20 10:42:39 2022 +0200

if_ffec: Reduce buffer size

Typical embedded systems don't have that much memory. Reduce the buffer
size to something more sensible for the usual type of application.

---

 freebsd/sys/dev/ffec/if_ffec.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/freebsd/sys/dev/ffec/if_ffec.c b/freebsd/sys/dev/ffec/if_ffec.c
index 47c0f770..4c1e147b 100644
--- a/freebsd/sys/dev/ffec/if_ffec.c
+++ b/freebsd/sys/dev/ffec/if_ffec.c
@@ -139,9 +139,17 @@ static struct ofw_compat_data compat_data[] = {
 /*
  * Driver data and defines.  The descriptor counts must be a power of two.
  */
+#ifndef __rtems__
 #define	RX_DESC_COUNT	512
+#else /* __rtems__ */
+#define	RX_DESC_COUNT	64
+#endif /* __rtems__ */
 #define	RX_DESC_SIZE	(sizeof(struct ffec_hwdesc) * RX_DESC_COUNT)
+#ifndef __rtems__
 #define	TX_DESC_COUNT	512
+#else /* __rtems__ */
+#define	TX_DESC_COUNT	64
+#endif /* __rtems__ */
 #define	TX_DESC_SIZE	(sizeof(struct ffec_hwdesc) * TX_DESC_COUNT)
 #define	TX_MAX_DMA_SEGS	8
 



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