diff options
| author | Camelia Groza <camelia.groza@nxp.com> | 2017-11-24 08:29:12 (GMT) |
|---|---|---|
| committer | Xie Xiaobo <xiaobo.xie@nxp.com> | 2017-12-12 07:32:43 (GMT) |
| commit | 08c48ca0670ab0fb81ba8f720da2726c1761191e (patch) | |
| tree | cdd769a0fff526380415d8d97a0ebb745ace9dee | |
| parent | de0d09da8d318745a4e1953cd29623e2badd8a83 (diff) | |
| download | linux-08c48ca0670ab0fb81ba8f720da2726c1761191e.tar.xz | |
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>
| -rw-r--r-- | drivers/net/ethernet/freescale/sdk_dpaa/Kconfig | 23 | ||||
| -rw-r--r-- | drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c | 4 |
2 files changed, 25 insertions, 2 deletions
diff --git a/drivers/net/ethernet/freescale/sdk_dpaa/Kconfig b/drivers/net/ethernet/freescale/sdk_dpaa/Kconfig index 92118b7..b21d236 100644 --- 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 diff --git a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c index cac613b..bf635b9 100644 --- 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_ceetm_ccg **ccg, /* 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, |