[PATCH AUTOSEL 4.4 1/4] net: dec: de2104x: Increase receive ring size for Tulip

Sasha Levin
2020-09-29T01:32:46Z

From: Lucy Yan <lucyyan@google.com>

[ Upstream commit ee460417d254d941dfea5fb7cff841f589643992 ]

Increase Rx ring size to address issue where hardware is reaching
the receive work limit.

Before:

[ 102.223342] de2104x 0000:17:00.0 eth0: rx work limit reached
[ 102.245695] de2104x 0000:17:00.0 eth0: rx work limit reached
[ 102.251387] de2104x 0000:17:00.0 eth0: rx work limit reached
[ 102.267444] de2104x 0000:17:00.0 eth0: rx work limit reached

Signed-off-by: Lucy Yan <lucyyan@google.com>
Reviewed-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/dec/tulip/de2104x.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/dec/tulip/de2104x.c b/drivers/net/ethernet/dec/tulip/de2104x.c
index cadcee645f74e..11ce50a057998 100644
--- a/drivers/net/ethernet/dec/tulip/de2104x.c
+++ b/drivers/net/ethernet/dec/tulip/de2104x.c
@@ -91,7 +91,7 @@ MODULE_PARM_DESC (rx_copybreak, "de2104x Breakpoint at which Rx packets are copi
#define DSL CONFIG_DE2104X_DSL
#endif

-#define DE_RX_RING_SIZE 64
+#define DE_RX_RING_SIZE 128
#define DE_TX_RING_SIZE 64
#define DE_RING_BYTES \
((sizeof(struct de_desc) * DE_RX_RING_SIZE) + \
--
2.25.1