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[v13,net-next,06/15] net: mvpp2: increase BM pool and RXQ size

Message ID 1613040542-16500-7-git-send-email-stefanc@marvell.com (mailing list archive)
State New, archived
Headers show
Series net: mvpp2: Add TX Flow Control support | expand

Commit Message

Stefan Chulski Feb. 11, 2021, 10:48 a.m. UTC 
From: Stefan Chulski <stefanc@marvell.com>

BM pool and RXQ size increased to support Firmware Flow Control.
Minimum depletion thresholds to support FC are 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>
Acked-by: Marcin Wojtas <mw@semihalf.com>
---
 drivers/net/ethernet/marvell/mvpp2/mvpp2.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

Comments

Russell King (Oracle) Feb. 11, 2021, 11:09 a.m. UTC | #1 
On Thu, Feb 11, 2021 at 12:48:53PM +0200, stefanc@marvell.com wrote:
> From: Stefan Chulski <stefanc@marvell.com>
> 
> BM pool and RXQ size increased to support Firmware Flow Control.
> Minimum depletion thresholds to support FC are 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>
> Acked-by: Marcin Wojtas <mw@semihalf.com>

Reviewed-by: Russell King <rmk+kernel@armlinux.org.uk>
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Patch

diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
index ce08086..e7bbf0a 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
@@ -715,8 +715,8 @@ 
 #define MVPP2_PORT_MAX_RXQ		32
 
 /* Max number of Rx descriptors */
-#define MVPP2_MAX_RXD_MAX		1024
-#define MVPP2_MAX_RXD_DFLT		128
+#define MVPP2_MAX_RXD_MAX		2048
+#define MVPP2_MAX_RXD_DFLT		1024
 
 /* Max number of Tx descriptors */
 #define MVPP2_MAX_TXD_MAX		2048
@@ -848,8 +848,8 @@  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