From: Andrew Rybchenko Date: Thu, 15 Dec 2016 12:50:53 +0000 (+0000) Subject: net/sfc: support parameter to choose performance profile X-Git-Tag: spdx-start~4999 X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=c22d3c508e0c3fd11160a6945ebed0b87d3aef00;p=dpdk.git net/sfc: support parameter to choose performance profile Supported options are auto (based on NIC firmware variant and installed licences), throughput, low-latency. Signed-off-by: Andrew Rybchenko Reviewed-by: Andrew Lee Reviewed-by: Robert Stonehouse --- diff --git a/doc/guides/nics/sfc_efx.rst b/doc/guides/nics/sfc_efx.rst index 2cca287760..36d0974107 100644 --- a/doc/guides/nics/sfc_efx.rst +++ b/doc/guides/nics/sfc_efx.rst @@ -152,6 +152,13 @@ whitelist option like "-w 02:00.0,arg1=value1,...". Case-insensitive 1/y/yes/on or 0/n/no/off may be used to specify boolean parameters value. +- ``perf_profile`` [auto|throughput|low-latency] (default **throughput**) + + Choose hardware tunning to be optimized for either throughput or + low-latency. + **auto** allows NIC firmware to make a choice based on + installed licences and firmware variant configured using **sfboot**. + - ``debug_init`` [bool] (default **n**) Enable extra logging during device intialization and startup. diff --git a/drivers/net/sfc/sfc.h b/drivers/net/sfc/sfc.h index 568a40e952..7e61d0c480 100644 --- a/drivers/net/sfc/sfc.h +++ b/drivers/net/sfc/sfc.h @@ -155,6 +155,7 @@ struct sfc_adapter { unsigned int txq_max_entries; + uint32_t evq_flags; unsigned int evq_count; struct sfc_evq_info *evq_info; diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c index bb79c9cc92..77f22f8d37 100644 --- a/drivers/net/sfc/sfc_ethdev.c +++ b/drivers/net/sfc/sfc_ethdev.c @@ -463,5 +463,6 @@ static struct eth_driver sfc_efx_pmd = { RTE_PMD_REGISTER_PCI(net_sfc_efx, sfc_efx_pmd.pci_drv); RTE_PMD_REGISTER_PCI_TABLE(net_sfc_efx, pci_id_sfc_efx_map); RTE_PMD_REGISTER_PARAM_STRING(net_sfc_efx, + SFC_KVARG_PERF_PROFILE "=" SFC_KVARG_VALUES_PERF_PROFILE " " SFC_KVARG_MCDI_LOGGING "=" SFC_KVARG_VALUES_BOOL " " SFC_KVARG_DEBUG_INIT "=" SFC_KVARG_VALUES_BOOL); diff --git a/drivers/net/sfc/sfc_ev.c b/drivers/net/sfc/sfc_ev.c index af3c7b2813..de428452cb 100644 --- a/drivers/net/sfc/sfc_ev.c +++ b/drivers/net/sfc/sfc_ev.c @@ -40,6 +40,7 @@ #include "sfc_ev.h" #include "sfc_rx.h" #include "sfc_tx.h" +#include "sfc_kvargs.h" /* Initial delay when waiting for event queue init complete event */ @@ -405,9 +406,7 @@ sfc_ev_qstart(struct sfc_adapter *sa, unsigned int sw_index) /* Create the common code event queue */ rc = efx_ev_qcreate(sa->nic, sw_index, esmp, evq_info->entries, - 0 /* unused on EF10 */, 0, - EFX_EVQ_FLAGS_TYPE_THROUGHPUT | - EFX_EVQ_FLAGS_NOTIFY_DISABLED, + 0 /* unused on EF10 */, 0, evq_info->flags, &evq->common); if (rc != 0) goto fail_ev_qcreate; @@ -640,6 +639,25 @@ sfc_ev_qinit_info(struct sfc_adapter *sa, unsigned int sw_index) SFC_ASSERT(rte_is_power_of_2(max_entries)); evq_info->max_entries = max_entries; + evq_info->flags = sa->evq_flags | EFX_EVQ_FLAGS_NOTIFY_DISABLED; + + return 0; +} + +static int +sfc_kvarg_perf_profile_handler(__rte_unused const char *key, + const char *value_str, void *opaque) +{ + uint64_t *value = opaque; + + if (strcasecmp(value_str, SFC_KVARG_PERF_PROFILE_THROUGHPUT) == 0) + *value = EFX_EVQ_FLAGS_TYPE_THROUGHPUT; + else if (strcasecmp(value_str, SFC_KVARG_PERF_PROFILE_LOW_LATENCY) == 0) + *value = EFX_EVQ_FLAGS_TYPE_LOW_LATENCY; + else if (strcasecmp(value_str, SFC_KVARG_PERF_PROFILE_AUTO) == 0) + *value = EFX_EVQ_FLAGS_TYPE_AUTO; + else + return -EINVAL; return 0; } @@ -660,6 +678,16 @@ sfc_ev_init(struct sfc_adapter *sa) sfc_log_init(sa, "entry"); + sa->evq_flags = EFX_EVQ_FLAGS_TYPE_THROUGHPUT; + rc = sfc_kvargs_process(sa, SFC_KVARG_PERF_PROFILE, + sfc_kvarg_perf_profile_handler, + &sa->evq_flags); + if (rc != 0) { + sfc_err(sa, "invalid %s parameter value", + SFC_KVARG_PERF_PROFILE); + goto fail_kvarg_perf_profile; + } + sa->evq_count = sfc_ev_qcount(sa); sa->mgmt_evq_index = 0; rte_spinlock_init(&sa->mgmt_evq_lock); @@ -700,6 +728,8 @@ fail_ev_qinit_info: fail_evqs_alloc: sa->evq_count = 0; + +fail_kvarg_perf_profile: sfc_log_init(sa, "failed %d", rc); return rc; } diff --git a/drivers/net/sfc/sfc_ev.h b/drivers/net/sfc/sfc_ev.h index 110f3b6eda..346e3ec328 100644 --- a/drivers/net/sfc/sfc_ev.h +++ b/drivers/net/sfc/sfc_ev.h @@ -74,6 +74,8 @@ struct sfc_evq_info { unsigned int max_entries; /* Real number of EVQ entries, less or equal to max_entries */ unsigned int entries; + /* Event queue creation flags */ + uint32_t flags; /* NUMA-aware EVQ data structure used on datapath */ struct sfc_evq *evq; }; diff --git a/drivers/net/sfc/sfc_kvargs.c b/drivers/net/sfc/sfc_kvargs.c index 5496b12e48..227a8dbea8 100644 --- a/drivers/net/sfc/sfc_kvargs.c +++ b/drivers/net/sfc/sfc_kvargs.c @@ -44,6 +44,7 @@ sfc_kvargs_parse(struct sfc_adapter *sa) const char **params = (const char *[]){ SFC_KVARG_DEBUG_INIT, SFC_KVARG_MCDI_LOGGING, + SFC_KVARG_PERF_PROFILE, NULL, }; diff --git a/drivers/net/sfc/sfc_kvargs.h b/drivers/net/sfc/sfc_kvargs.h index ffce851dd3..2fea9c7a4c 100644 --- a/drivers/net/sfc/sfc_kvargs.h +++ b/drivers/net/sfc/sfc_kvargs.h @@ -42,6 +42,16 @@ extern "C" { #define SFC_KVARG_MCDI_LOGGING "mcdi_logging" +#define SFC_KVARG_PERF_PROFILE "perf_profile" + +#define SFC_KVARG_PERF_PROFILE_AUTO "auto" +#define SFC_KVARG_PERF_PROFILE_THROUGHPUT "throughput" +#define SFC_KVARG_PERF_PROFILE_LOW_LATENCY "low-latency" +#define SFC_KVARG_VALUES_PERF_PROFILE \ + "[" SFC_KVARG_PERF_PROFILE_AUTO "|" \ + SFC_KVARG_PERF_PROFILE_THROUGHPUT "|" \ + SFC_KVARG_PERF_PROFILE_LOW_LATENCY "]" + struct sfc_adapter; int sfc_kvargs_parse(struct sfc_adapter *sa);