| From aa54d82b06962bb620852ed20270f7783be68897 Mon Sep 17 00:00:00 2001 |
| From: Camelia Groza <camelia.groza@nxp.com> |
| Date: Fri, 24 Nov 2017 10:29:12 +0200 |
| Subject: [PATCH] sdk_dpaa: ceetm: add independent CEETM congestion thresholds |
| |
| Configure the CEETM egress congestion thresholds independently from the |
| default Ethernet driver's Work Queues. Allow the user to edit the |
| thresholds through menuconfig. |
| |
| Signed-off-by: Camelia Groza <camelia.groza@nxp.com> |
| --- |
| drivers/net/ethernet/freescale/sdk_dpaa/Kconfig | 23 ++++++++++++++++++++++ |
| .../ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c | 4 ++-- |
| 2 files changed, 25 insertions(+), 2 deletions(-) |
| |
| --- a/drivers/net/ethernet/freescale/sdk_dpaa/Kconfig |
| +++ b/drivers/net/ethernet/freescale/sdk_dpaa/Kconfig |
| @@ -20,6 +20,29 @@ config FSL_DPAA_CEETM |
| help |
| Enable QoS offloading support through the CEETM hardware block. |
| |
| +config FSL_DPAA_CEETM_CCS_THRESHOLD_1G |
| + hex "CEETM egress congestion threshold on 1G ports" |
| + depends on FSL_DPAA_CEETM |
| + range 0x1000 0x10000000 |
| + default "0x000a0000" |
| + help |
| + The size in bytes of the CEETM egress Class Congestion State threshold on 1G ports. |
| + The threshold needs to be configured keeping in mind the following factors: |
| + - A threshold too large will buffer frames for a long time in the TX queues, |
| + when a small shaping rate is configured. This will cause buffer pool depletion |
| + or out of memory errors. This in turn will cause frame loss on RX; |
| + - A threshold too small will cause unnecessary frame loss by entering |
| + congestion too often. |
| + |
| +config FSL_DPAA_CEETM_CCS_THRESHOLD_10G |
| + hex "CEETM egress congestion threshold on 10G ports" |
| + depends on FSL_DPAA_CEETM |
| + range 0x1000 0x20000000 |
| + default "0x00640000" |
| + help |
| + The size in bytes of the CEETM egress Class Congestion State threshold on 10G ports. |
| + See FSL_DPAA_CEETM_CCS_THRESHOLD_1G for details. |
| + |
| config FSL_DPAA_OFFLINE_PORTS |
| bool "Offline Ports support" |
| depends on FSL_SDK_DPAA_ETH |
| --- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c |
| +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c |
| @@ -185,9 +185,9 @@ static int ceetm_config_ccg(struct qm_ce |
| |
| /* Set the congestion state thresholds according to the link speed */ |
| if (dpa_priv->mac_dev->if_support & SUPPORTED_10000baseT_Full) |
| - cs_th = CONFIG_FSL_DPAA_CS_THRESHOLD_10G; |
| + cs_th = CONFIG_FSL_DPAA_CEETM_CCS_THRESHOLD_10G; |
| else |
| - cs_th = CONFIG_FSL_DPAA_CS_THRESHOLD_1G; |
| + cs_th = CONFIG_FSL_DPAA_CEETM_CCS_THRESHOLD_1G; |
| |
| qm_cgr_cs_thres_set64(&ccg_params.cs_thres_in, cs_th, 1); |
| qm_cgr_cs_thres_set64(&ccg_params.cs_thres_out, |