Allow the user to tweak the refill threshold and the total number
of buffers in the buffer pool. The provided values are for one CPU.
Signed-off-by: Madalin Bucur <madalin.bu...@freescale.com>
---
drivers/net/ethernet/freescale/dpaa/Kconfig | 20 ++++++++++++++++++++
drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 2 +-
drivers/net/ethernet/freescale/dpaa/dpaa_eth.h | 3 ---
drivers/net/ethernet/freescale/dpaa/dpaa_eth_sg.c | 6 +++---
4 files changed, 24 insertions(+), 7 deletions(-)
diff --git a/drivers/net/ethernet/freescale/dpaa/Kconfig
b/drivers/net/ethernet/freescale/dpaa/Kconfig
index 7ef703c..9db7d25 100644
--- a/drivers/net/ethernet/freescale/dpaa/Kconfig
+++ b/drivers/net/ethernet/freescale/dpaa/Kconfig
@@ -11,6 +11,26 @@ menuconfig FSL_DPAA_ETH
if FSL_DPAA_ETH
+config FSL_DPAA_ETH_MAX_BUF_COUNT
+ int "Maximum nuber of buffers in private bpool"
+ depends on FSL_DPAA_ETH
+ range 64 2048
+ default "128"
+ ---help---
+ The maximum number of buffers to be by default allocated in the
DPAA-Ethernet private port's
+ buffer pool. One needn't normally modify this, as it has probably
been tuned for performance
+ already. This cannot be lower than DPAA_ETH_REFILL_THRESHOLD.
+
+config FSL_DPAA_ETH_REFILL_THRESHOLD
+ int "Private bpool refill threshold"
+ depends on FSL_DPAA_ETH
+ range 32 FSL_DPAA_ETH_MAX_BUF_COUNT
+ default "80"
+ ---help---
+ The DPAA-Ethernet driver will start replenishing buffer pools whose
count
+ falls below this threshold. This must be related to
DPAA_ETH_MAX_BUF_COUNT. One needn't normally
+ modify this value unless one has very specific performance reasons.
+
config FSL_DPAA_CS_THRESHOLD_1G
hex "Egress congestion threshold on 1G ports"
depends on FSL_DPAA_ETH
diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
index ee65ca2..9e78371 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
@@ -481,7 +481,7 @@ dpa_priv_bp_probe(struct device *dev)
}
dpa_bp->percpu_count = devm_alloc_percpu(dev, *dpa_bp->percpu_count);
- dpa_bp->target_count = FSL_DPAA_ETH_MAX_BUF_COUNT;
+ dpa_bp->target_count = CONFIG_FSL_DPAA_ETH_MAX_BUF_COUNT;
dpa_bp->seed_cb = dpa_bp_priv_seed;
dpa_bp->free_buf_cb = _dpa_bp_free_pf;
diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.h
b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.h
index b643c52..5f3157d 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.h
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.h
@@ -126,9 +126,6 @@ struct dpa_buffer_layout_s {
#define DPAA_ETH_RX_QUEUES 128
-#define FSL_DPAA_ETH_MAX_BUF_COUNT 128
-#define FSL_DPAA_ETH_REFILL_THRESHOLD 80
-
/* More detailed FQ types - used for fine-grained WQ assignments */
enum dpa_fq_type {
FQ_TYPE_RX_DEFAULT = 1, /* Rx Default FQs */
diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth_sg.c
b/drivers/net/ethernet/freescale/dpaa/dpaa_eth_sg.c
index ef3117e..1b3dc28 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth_sg.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth_sg.c
@@ -153,7 +153,7 @@ int dpaa_eth_refill_bpools(struct dpa_bp *dpa_bp, int
*countptr)
int count = *countptr;
int new_bufs;
- if (unlikely(count < FSL_DPAA_ETH_REFILL_THRESHOLD)) {
+ if (unlikely(count < CONFIG_FSL_DPAA_ETH_REFILL_THRESHOLD)) {
do {
new_bufs = _dpa_bp_add_8_bufs(dpa_bp);
if (unlikely(!new_bufs)) {
@@ -164,10 +164,10 @@ int dpaa_eth_refill_bpools(struct dpa_bp *dpa_bp, int
*countptr)
break;
}
count += new_bufs;
- } while (count < FSL_DPAA_ETH_MAX_BUF_COUNT);
+ } while (count < CONFIG_FSL_DPAA_ETH_MAX_BUF_COUNT);
*countptr = count;
- if (unlikely(count < FSL_DPAA_ETH_MAX_BUF_COUNT))
+ if (unlikely(count < CONFIG_FSL_DPAA_ETH_MAX_BUF_COUNT))
return -ENOMEM;
}
--
1.7.11.7
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