[PATCH v2 RFC net-next 06/18] net: mvpp2: increase BM pool size to 2048 buffers

stefanc
2021-01-24T12:01:16Z

BM pool size increased to support Firmware Flow Control.
Minimum depletion thresholds to support FC is 1024 buffers.
BM pool size increased to 2048 to have some 1024 buffers
space between depletion thresholds and BM pool size.

Jumbo frames require a 9888B buffer, so memory requirements
for data buffers increased from 7MB to 24MB.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
---
drivers/net/ethernet/marvell/mvpp2/mvpp2.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
index 89b3ede..8dc669d 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
@@ -851,8 +851,8 @@ enum mvpp22_ptp_packet_format {
#define MVPP22_PTP_TIMESTAMPQUEUESELECT BIT(18)

/* BM constants */
-#define MVPP2_BM_JUMBO_BUF_NUM 512
-#define MVPP2_BM_LONG_BUF_NUM 1024
+#define MVPP2_BM_JUMBO_BUF_NUM 2048
+#define MVPP2_BM_LONG_BUF_NUM 2048
#define MVPP2_BM_SHORT_BUF_NUM 2048
#define MVPP2_BM_POOL_SIZE_MAX (16*1024 - MVPP2_BM_POOL_PTR_ALIGN/4)
#define MVPP2_BM_POOL_PTR_ALIGN 128
--
1.9.1