From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 37284A0513; Wed, 15 Jan 2020 15:02:05 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id E57221C013; Wed, 15 Jan 2020 15:02:03 +0100 (CET) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by dpdk.org (Postfix) with ESMTP id 9B5E51BFED for ; Wed, 15 Jan 2020 15:02:01 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 15 Jan 2020 06:02:00 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,322,1574150400"; d="scan'208";a="219285377" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.35]) ([10.237.221.35]) by fmsmga007.fm.intel.com with ESMTP; 15 Jan 2020 06:01:59 -0800 To: Ori Kam , Matan Azrad , Shahaf Shuler , Viacheslav Ovsiienko Cc: dev@dpdk.org References: <1578907777-194921-1-git-send-email-orika@mellanox.com> <1578907777-194921-3-git-send-email-orika@mellanox.com> From: Ferruh Yigit Autocrypt: addr=ferruh.yigit@intel.com; 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charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH 2/2] net/mlx5: add fine grain dynamic flag support X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On 1/13/2020 9:29 AM, Ori Kam wrote: > The inline feature is designed to save PCI bandwidth by copying some > of the data to the wqe. This feature if enabled works for all packets. > > In some cases when using external memory, the PCI bandwidth is not > relevant since the memory can be accessed by other means. > > This commit introduce the ability to control the inline with mbuf > granularity. > > In order to use this feature the application should register the field > name, and restart the port. > > Signed-off-by: Ori Kam > Acked-by: Viacheslav Ovsiienko > --- > drivers/net/mlx5/mlx5.c | 15 +++++++++++++++ > drivers/net/mlx5/mlx5_rxtx.c | 2 ++ > drivers/net/mlx5/mlx5_rxtx.h | 3 +++ > drivers/net/mlx5/mlx5_trigger.c | 8 ++++++++ > drivers/net/mlx5/rte_pmd_mlx5.h | 32 +++++++++++++++++++++++++++++++ > drivers/net/mlx5/rte_pmd_mlx5_version.map | 7 +++++++ > 6 files changed, 67 insertions(+) > create mode 100644 drivers/net/mlx5/rte_pmd_mlx5.h > > diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c > index 50960c9..27dbe27 100644 > --- a/drivers/net/mlx5/mlx5.c > +++ b/drivers/net/mlx5/mlx5.c > @@ -46,6 +46,7 @@ > #include "mlx5_glue.h" > #include "mlx5_mr.h" > #include "mlx5_flow.h" > +#include "rte_pmd_mlx5.h" > > /* Device parameter to enable RX completion queue compression. */ > #define MLX5_RXQ_CQE_COMP_EN "rxq_cqe_comp_en" > @@ -1988,6 +1989,20 @@ struct mlx5_flow_id_pool * > return ret; > } > > +int > +rte_pmd_mlx5_get_dyn_flag_names(char *names[], uint16_t n) > +{ Now this is a public API, it should validate the user input. > + static const char *const dynf_names[] = { > + RTE_PMD_MLX5_FINE_GRANULARITY_INLINE, > + }; > + int num = RTE_MIN(n, RTE_DIM(dynf_names)); > + int i; > + > + for (i = 0; i < num; i++) > + strcpy(names[i], dynf_names[i]); > + return num; > +} > + > /** > * Check sibling device configurations. > * > diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c > index 67cafd1..aa6aa22 100644 > --- a/drivers/net/mlx5/mlx5_rxtx.c > +++ b/drivers/net/mlx5/mlx5_rxtx.c > @@ -126,6 +126,8 @@ enum mlx5_txcmp_code { > uint8_t mlx5_cksum_table[1 << 10] __rte_cache_aligned; > uint8_t mlx5_swp_types_table[1 << 10] __rte_cache_aligned; > > +uint64_t rte_net_mlx5_dynf_inline_mask; > + > /** > * Build a table to translate Rx completion flags to packet type. > * > diff --git a/drivers/net/mlx5/mlx5_rxtx.h b/drivers/net/mlx5/mlx5_rxtx.h > index e362b4a..7c38c57 100644 > --- a/drivers/net/mlx5/mlx5_rxtx.h > +++ b/drivers/net/mlx5/mlx5_rxtx.h > @@ -42,6 +42,9 @@ > /* Support tunnel matching. */ > #define MLX5_FLOW_TUNNEL 9 > > +/* Mbuf dynamic flag offset for inline. */ > +extern uint64_t rte_net_mlx5_dynf_inline_mask; > + > struct mlx5_rxq_stats { > #ifdef MLX5_PMD_SOFT_COUNTERS > uint64_t ipackets; /**< Total of successfully received packets. */ > diff --git a/drivers/net/mlx5/mlx5_trigger.c b/drivers/net/mlx5/mlx5_trigger.c > index ab6937a..ab253b2 100644 > --- a/drivers/net/mlx5/mlx5_trigger.c > +++ b/drivers/net/mlx5/mlx5_trigger.c > @@ -13,6 +13,7 @@ > #include "mlx5.h" > #include "mlx5_rxtx.h" > #include "mlx5_utils.h" > +#include "rte_pmd_mlx5.h" > > /** > * Stop traffic on Tx queues. > @@ -270,8 +271,15 @@ > { > struct mlx5_priv *priv = dev->data->dev_private; > int ret; > + int fine_inline; > > DRV_LOG(DEBUG, "port %u starting device", dev->data->port_id); > + fine_inline = rte_mbuf_dynflag_lookup > + (RTE_PMD_MLX5_FINE_GRANULARITY_INLINE, NULL); > + if (fine_inline > 0) > + rte_net_mlx5_dynf_inline_mask = 1UL << fine_inline; > + else > + rte_net_mlx5_dynf_inline_mask = 0; > ret = mlx5_dev_configure_rss_reta(dev); > if (ret) { > DRV_LOG(ERR, "port %u reta config failed: %s", > diff --git a/drivers/net/mlx5/rte_pmd_mlx5.h b/drivers/net/mlx5/rte_pmd_mlx5.h > new file mode 100644 > index 0000000..12e18ca > --- /dev/null > +++ b/drivers/net/mlx5/rte_pmd_mlx5.h > @@ -0,0 +1,32 @@ > +/* SPDX-License-Identifier: BSD-3-Clause > + * Copyright 2020 Mellanox Technologies, Ltd > + */ > + > +#ifndef RTE_PMD_PRIVATE_MLX5_H_ > +#define RTE_PMD_PRIVATE_MLX5_H_ > + > +/** > + * @file > + * MLX5 public header. > + * > + * This interface provides the ability to support private PMD > + * dynamic flags. > + */ > + > +#define RTE_PMD_MLX5_FINE_GRANULARITY_INLINE "mlx5_fine_granularity_inline" > + > +/** > + * Returns the dynamic flags name, that are supported. > + * > + * @param[out] names > + * Array that is used to return the supported dynamic flags names. > + * @param[in] n > + * The number of elements in the names array. > + * > + * @return > + * The number of dynamic flags that were copied. > + */ > +__rte_experimental > +int rte_pmd_mlx5_get_dyn_flag_names(char *names[], uint16_t n); Can you please add this header to the API documentation index, doc/api/doxy-api-index.md, so it will be part of API document. > + > +#endif > diff --git a/drivers/net/mlx5/rte_pmd_mlx5_version.map b/drivers/net/mlx5/rte_pmd_mlx5_version.map > index f9f17e4..c8b1031 100644 > --- a/drivers/net/mlx5/rte_pmd_mlx5_version.map > +++ b/drivers/net/mlx5/rte_pmd_mlx5_version.map > @@ -1,3 +1,10 @@ > DPDK_20.0 { > local: *; > }; > + > +EXPERIMENTAL { > + global: > + > + # added in 20.02 > + rte_pmd_mlx5_get_dyn_flag_names; > +}; > Isn't the datapath implementation missing? Where this new mbuf dynamic flag set or checked?