[PATCH] net: macb: Increase DMA buffer size
flat view
STALE3705d
REVIEWED: 2 (0M)
From: Xander Huff <hidden>
Date: 2016-08-24 18:57:16
Also in:
lkml
Subsystem:
atmel macb ethernet driver, networking drivers, the rest · Maintainers:
Théo Lebrun, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
2 review trailers.
From: Nathan Sullivan <redacted> In recent testing with the RT patchset, we have seen cases where the transmit ring can fill even with up to 200 txbds in the ring. Increase the size of the DMA rings to avoid overruns. Signed-off-by: Nathan Sullivan <redacted> Acked-by: Ben Shelton <redacted> Acked-by: Jaeden Amero <redacted> Natinst-ReviewBoard-ID: 83662 --- drivers/net/ethernet/cadence/macb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c
index 3256839..86a8e20 100644
--- a/drivers/net/ethernet/cadence/macb.c
+++ b/drivers/net/ethernet/cadence/macb.c@@ -35,12 +35,12 @@ #include "macb.h" -#define MACB_RX_BUFFER_SIZE 128 +#define MACB_RX_BUFFER_SIZE 1536 #define RX_BUFFER_MULTIPLE 64 /* bytes */ #define RX_RING_SIZE 512 /* must be power of 2 */ #define RX_RING_BYTES (sizeof(struct macb_dma_desc) * RX_RING_SIZE) -#define TX_RING_SIZE 128 /* must be power of 2 */ +#define TX_RING_SIZE 512 /* must be power of 2 */ #define TX_RING_BYTES (sizeof(struct macb_dma_desc) * TX_RING_SIZE) /* level of occupied TX descriptors under which we wake up TX process */
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1.9.1