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Date: Mon, 4 Feb 2019 17:00:37 +0000
From: Ioana Ciocoi Radulescu <ruxandra.radulescu@....com>
To: "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"davem@...emloft.net" <davem@...emloft.net>
CC: Ioana Ciornei <ioana.ciornei@....com>,
"brouer@...hat.com" <brouer@...hat.com>,
"ilias.apalodimas@...aro.org" <ilias.apalodimas@...aro.org>
Subject: [PATCH net-next 4/4] dpaa2-eth: Update buffer pool refill threshold
Add more buffers to the Rx buffer pool as soon as 7 of them
get consumed, instead of waiting for their number to drop
below a fixed threshold.
7 is the number of buffers that can be released in the pool
via a single DPIO command.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@....com>
---
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
index 3e29dec..9510928 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
@@ -53,7 +53,8 @@
*/
#define DPAA2_ETH_MAX_FRAMES_PER_QUEUE (DPAA2_ETH_TAILDROP_THRESH / 64)
#define DPAA2_ETH_NUM_BUFS (DPAA2_ETH_MAX_FRAMES_PER_QUEUE + 256)
-#define DPAA2_ETH_REFILL_THRESH DPAA2_ETH_MAX_FRAMES_PER_QUEUE
+#define DPAA2_ETH_REFILL_THRESH \
+ (DPAA2_ETH_NUM_BUFS - DPAA2_ETH_BUFS_PER_CMD)
/* Maximum number of buffers that can be acquired/released through a single
* QBMan command
--
2.7.4
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