24 lines
891 B
Diff
24 lines
891 B
Diff
From: Felix Fietkau <nbd@nbd.name>
|
|
Date: Sun, 12 Apr 2015 22:36:16 +0200
|
|
Subject: [PATCH] bgmac: increase rx ring size from 511 to 512
|
|
|
|
Limiting it to 511 looks like a failed attempt at leaving one descriptor
|
|
empty to allow the hardware to stop processing a buffer that has not
|
|
been prepared yet. However, this doesn't work because this affects the
|
|
total ring size as well
|
|
|
|
Signed-off-by: Felix Fietkau <nbd@nbd.name>
|
|
---
|
|
|
|
--- a/drivers/net/ethernet/broadcom/bgmac.h
|
|
+++ b/drivers/net/ethernet/broadcom/bgmac.h
|
|
@@ -356,7 +356,7 @@
|
|
#define BGMAC_MAX_RX_RINGS 1
|
|
|
|
#define BGMAC_TX_RING_SLOTS 128
|
|
-#define BGMAC_RX_RING_SLOTS 512 - 1 /* Why -1? Well, Broadcom does that... */
|
|
+#define BGMAC_RX_RING_SLOTS 512
|
|
|
|
#define BGMAC_RX_HEADER_LEN 28 /* Last 24 bytes are unused. Well... */
|
|
#define BGMAC_RX_FRAME_OFFSET 30 /* There are 2 unused bytes between header and real data */
|