2016-06-07 14:58:31 +08:00
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From: Felix Fietkau <nbd@nbd.name>
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2015-04-13 06:10:40 +08:00
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Date: Sun, 12 Apr 2015 22:36:16 +0200
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Subject: [PATCH] bgmac: increase rx ring size from 511 to 512
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Limiting it to 511 looks like a failed attempt at leaving one descriptor
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empty to allow the hardware to stop processing a buffer that has not
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been prepared yet. However, this doesn't work because this affects the
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total ring size as well
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2016-06-07 14:58:31 +08:00
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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2015-04-13 06:10:40 +08:00
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---
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--- a/drivers/net/ethernet/broadcom/bgmac.h
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+++ b/drivers/net/ethernet/broadcom/bgmac.h
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@@ -356,7 +356,7 @@
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#define BGMAC_MAX_RX_RINGS 1
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#define BGMAC_TX_RING_SLOTS 128
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-#define BGMAC_RX_RING_SLOTS 512 - 1 /* Why -1? Well, Broadcom does that... */
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+#define BGMAC_RX_RING_SLOTS 512
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#define BGMAC_RX_HEADER_LEN 28 /* Last 24 bytes are unused. Well... */
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#define BGMAC_RX_FRAME_OFFSET 30 /* There are 2 unused bytes between header and real data */
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