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@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/broadcom/bgmac.h b/drivers/net/ethernet/broadcom/bgmac.h
index 3db0d52..e45e303 100644 (file)
--- 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 */