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From: "Min Hu (Connor)" <humin29@huawei.com>
To: <dev@dpdk.org>
Cc: <ferruh.yigit@intel.com>
Subject: [dpdk-dev] [PATCH v5 1/8] net/hns3: support runtime config to select IO burst func
Date: Fri, 19 Mar 2021 09:07:19 +0800
Message-ID: <1616116046-47578-2-git-send-email-humin29@huawei.com> (raw)
In-Reply-To: <1616116046-47578-1-git-send-email-humin29@huawei.com>

From: Chengwen Feng <fengchengwen@huawei.com>

Currently, the driver support multiple IO burst function and auto
selection of the most appropriate function based on offload
configuration.

Most applications such as l2fwd/l3fwd don't provide the means to
change offload configuration, so it will use the auto selection's io
burst function.

This patch support runtime config to select io burst function, which
add two config: rx_func_hint and tx_func_hint, both could assign
vec/sve/simple/common.

The driver will use the following rules to select io burst func:
a. if hint equal vec and meet the vec Rx/Tx usage condition then use
the neon function.
b. if hint equal sve and meet the sve Rx/Tx usage condition then use
the sve function.
c. if hint equal simple and meet the simple Rx/Tx usage condition then
use the simple function.
d. if hint equal common then use the common function.
e. if hint not set then:
e.1. if meet the vec Rx/Tx usage condition then use the neon function.
e.2. if meet the simple Rx/Tx usage condition then use the simple
function.
e.3. else use the common function.

Note: the sve Rx/Tx usage condition based on the vec Rx/Tx usage
condition and runtime environment (which must support SVE).

In the previous versions, driver will preferred use the sve function
when meet the sve Rx/Tx usage condition, but in this case driver could
get better performance if use the neon function.

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
v6:
- document hns3.rst about description of vec, common and simple.
---
 doc/guides/nics/hns3.rst               | 19 +++++++++
 doc/guides/rel_notes/release_21_05.rst |  1 +
 drivers/net/hns3/hns3_ethdev.c         | 77 ++++++++++++++++++++++++++++++++++
 drivers/net/hns3/hns3_ethdev.h         | 15 +++++++
 drivers/net/hns3/hns3_ethdev_vf.c      |  4 ++
 drivers/net/hns3/hns3_rxtx.c           | 54 +++++++++++++++++-------
 6 files changed, 156 insertions(+), 14 deletions(-)

diff --git a/doc/guides/nics/hns3.rst b/doc/guides/nics/hns3.rst
index 84bd7a3..8f48240 100644
--- a/doc/guides/nics/hns3.rst
+++ b/doc/guides/nics/hns3.rst
@@ -46,6 +46,25 @@ Prerequisites
 - Follow the DPDK :ref:`Getting Started Guide for Linux <linux_gsg>` to setup the basic DPDK environment.
 
 
+Runtime Config Options
+----------------------
+
+- ``rx_func_hint`` (default ``none``)
+
+  Used to select Rx burst function, supported value are "vec", "sve", "simple", "common".
+  When equal "vec" and meet the vector Rx usage condition then use the default vector Rx implementation, 'neon' for Kunpeng Arm platform.
+  When equal "sve" and meet the sve Rx usage condition then use the sve Rx function.
+  When equal "simple" and meet the simple Rx usage condition then use the simple Rx function which indicates the Scalar algorithm obtained from rte_eth_rx_burst_mode_get.
+  When equal "common" then use the common Rx function which indicates the Scalar Scattered algorithm obtained from rte_eth_rx_burst_mode_get.
+
+- ``tx_func_hint`` (default ``none``)
+
+  Used to select Tx burst function, supported value are "vec", "sve", "simple", "common".
+  When equal "vec" and meet the vector Tx usage condition then use the default vector Tx implementation, 'neon' for Kunpeng Arm platform.
+  When equal "sve" and meet the sve Tx usage condition then use the sve Tx function.
+  When equal "simple" and meet the simple Tx usage condition then use the simple Tx function which indicates the Scalar Simple algorithm obtained from rte_eth_tx_burst_mode_get.
+  When equal "common" then use the common Tx function which indicated the Scalar algorithm obtained from rte_eth_tx_burst_mode_get.
+
 Driver compilation and testing
 ------------------------------
 
diff --git a/doc/guides/rel_notes/release_21_05.rst b/doc/guides/rel_notes/release_21_05.rst
index dc5399f..1d85942 100644
--- a/doc/guides/rel_notes/release_21_05.rst
+++ b/doc/guides/rel_notes/release_21_05.rst
@@ -60,6 +60,7 @@ New Features
   * Added support for module EEPROM dumping.
   * Added support for freeing Tx mbuf on demand.
   * Added support for copper port in Kunpeng930.
+  * Added support for runtime config to select IO burst function.
 
 * **Updated NXP DPAA2 driver.**
 
diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c
index 9cbcc13..28aa27a 100644
--- a/drivers/net/hns3/hns3_ethdev.c
+++ b/drivers/net/hns3/hns3_ethdev.c
@@ -6,6 +6,7 @@
 #include <rte_bus_pci.h>
 #include <ethdev_pci.h>
 #include <rte_pci.h>
+#include <rte_kvargs.h>
 
 #include "hns3_ethdev.h"
 #include "hns3_logs.h"
@@ -6505,6 +6506,78 @@ hns3_get_module_info(struct rte_eth_dev *dev,
 	return 0;
 }
 
+static int
+hns3_parse_io_hint_func(const char *key, const char *value, void *extra_args)
+{
+	uint32_t hint = HNS3_IO_FUNC_HINT_NONE;
+
+	RTE_SET_USED(key);
+
+	if (strcmp(value, "vec") == 0)
+		hint = HNS3_IO_FUNC_HINT_VEC;
+	else if (strcmp(value, "sve") == 0)
+		hint = HNS3_IO_FUNC_HINT_SVE;
+	else if (strcmp(value, "simple") == 0)
+		hint = HNS3_IO_FUNC_HINT_SIMPLE;
+	else if (strcmp(value, "common") == 0)
+		hint = HNS3_IO_FUNC_HINT_COMMON;
+
+	/* If the hint is valid then update output parameters */
+	if (hint != HNS3_IO_FUNC_HINT_NONE)
+		*(uint32_t *)extra_args = hint;
+
+	return 0;
+}
+
+static const char *
+hns3_get_io_hint_func_name(uint32_t hint)
+{
+	switch (hint) {
+	case HNS3_IO_FUNC_HINT_VEC:
+		return "vec";
+	case HNS3_IO_FUNC_HINT_SVE:
+		return "sve";
+	case HNS3_IO_FUNC_HINT_SIMPLE:
+		return "simple";
+	case HNS3_IO_FUNC_HINT_COMMON:
+		return "common";
+	default:
+		return "none";
+	}
+}
+
+void
+hns3_parse_devargs(struct rte_eth_dev *dev)
+{
+	struct hns3_adapter *hns = dev->data->dev_private;
+	uint32_t rx_func_hint = HNS3_IO_FUNC_HINT_NONE;
+	uint32_t tx_func_hint = HNS3_IO_FUNC_HINT_NONE;
+	struct hns3_hw *hw = &hns->hw;
+	struct rte_kvargs *kvlist;
+
+	if (dev->device->devargs == NULL)
+		return;
+
+	kvlist = rte_kvargs_parse(dev->device->devargs->args, NULL);
+	if (!kvlist)
+		return;
+
+	rte_kvargs_process(kvlist, HNS3_DEVARG_RX_FUNC_HINT,
+			   &hns3_parse_io_hint_func, &rx_func_hint);
+	rte_kvargs_process(kvlist, HNS3_DEVARG_TX_FUNC_HINT,
+			   &hns3_parse_io_hint_func, &tx_func_hint);
+	rte_kvargs_free(kvlist);
+
+	if (rx_func_hint != HNS3_IO_FUNC_HINT_NONE)
+		hns3_warn(hw, "parsed %s = %s.", HNS3_DEVARG_RX_FUNC_HINT,
+			  hns3_get_io_hint_func_name(rx_func_hint));
+	hns->rx_func_hint = rx_func_hint;
+	if (tx_func_hint != HNS3_IO_FUNC_HINT_NONE)
+		hns3_warn(hw, "parsed %s = %s.", HNS3_DEVARG_TX_FUNC_HINT,
+			  hns3_get_io_hint_func_name(tx_func_hint));
+	hns->tx_func_hint = tx_func_hint;
+}
+
 static const struct eth_dev_ops hns3_eth_dev_ops = {
 	.dev_configure      = hns3_dev_configure,
 	.dev_start          = hns3_dev_start,
@@ -6625,6 +6698,7 @@ hns3_dev_init(struct rte_eth_dev *eth_dev)
 	hw->adapter_state = HNS3_NIC_UNINITIALIZED;
 	hns->is_vf = false;
 	hw->data = eth_dev->data;
+	hns3_parse_devargs(eth_dev);
 
 	/*
 	 * Set default max packet size according to the mtu
@@ -6758,5 +6832,8 @@ static struct rte_pci_driver rte_hns3_pmd = {
 RTE_PMD_REGISTER_PCI(net_hns3, rte_hns3_pmd);
 RTE_PMD_REGISTER_PCI_TABLE(net_hns3, pci_id_hns3_map);
 RTE_PMD_REGISTER_KMOD_DEP(net_hns3, "* igb_uio | vfio-pci");
+RTE_PMD_REGISTER_PARAM_STRING(net_hns3,
+		HNS3_DEVARG_RX_FUNC_HINT "=vec|sve|simple|common "
+		HNS3_DEVARG_TX_FUNC_HINT "=vec|sve|simple|common ");
 RTE_LOG_REGISTER(hns3_logtype_init, pmd.net.hns3.init, NOTICE);
 RTE_LOG_REGISTER(hns3_logtype_driver, pmd.net.hns3.driver, NOTICE);
diff --git a/drivers/net/hns3/hns3_ethdev.h b/drivers/net/hns3/hns3_ethdev.h
index 932600d..ec4b475 100644
--- a/drivers/net/hns3/hns3_ethdev.h
+++ b/drivers/net/hns3/hns3_ethdev.h
@@ -772,9 +772,23 @@ struct hns3_adapter {
 	bool tx_simple_allowed;
 	bool tx_vec_allowed;
 
+	uint32_t rx_func_hint;
+	uint32_t tx_func_hint;
+
 	struct hns3_ptype_table ptype_tbl __rte_cache_min_aligned;
 };
 
+enum {
+	HNS3_IO_FUNC_HINT_NONE = 0,
+	HNS3_IO_FUNC_HINT_VEC,
+	HNS3_IO_FUNC_HINT_SVE,
+	HNS3_IO_FUNC_HINT_SIMPLE,
+	HNS3_IO_FUNC_HINT_COMMON
+};
+
+#define HNS3_DEVARG_RX_FUNC_HINT	"rx_func_hint"
+#define HNS3_DEVARG_TX_FUNC_HINT	"tx_func_hint"
+
 #define HNS3_DEV_SUPPORT_DCB_B			0x0
 #define HNS3_DEV_SUPPORT_COPPER_B		0x1
 #define HNS3_DEV_SUPPORT_UDP_GSO_B		0x2
@@ -975,6 +989,7 @@ int hns3_dev_infos_get(struct rte_eth_dev *eth_dev,
 		       struct rte_eth_dev_info *info);
 void hns3vf_update_link_status(struct hns3_hw *hw, uint8_t link_status,
 			  uint32_t link_speed, uint8_t link_duplex);
+void hns3_parse_devargs(struct rte_eth_dev *dev);
 
 static inline bool
 is_reset_pending(struct hns3_adapter *hns)
diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c
index fd20c52..f3eaefb 100644
--- a/drivers/net/hns3/hns3_ethdev_vf.c
+++ b/drivers/net/hns3/hns3_ethdev_vf.c
@@ -2834,6 +2834,7 @@ hns3vf_dev_init(struct rte_eth_dev *eth_dev)
 	hw->adapter_state = HNS3_NIC_UNINITIALIZED;
 	hns->is_vf = true;
 	hw->data = eth_dev->data;
+	hns3_parse_devargs(eth_dev);
 
 	ret = hns3_reset_init(hw);
 	if (ret)
@@ -2962,3 +2963,6 @@ static struct rte_pci_driver rte_hns3vf_pmd = {
 RTE_PMD_REGISTER_PCI(net_hns3_vf, rte_hns3vf_pmd);
 RTE_PMD_REGISTER_PCI_TABLE(net_hns3_vf, pci_id_hns3vf_map);
 RTE_PMD_REGISTER_KMOD_DEP(net_hns3_vf, "* igb_uio | vfio-pci");
+RTE_PMD_REGISTER_PARAM_STRING(net_hns3_vf,
+		HNS3_DEVARG_RX_FUNC_HINT "=vec|sve|simple|common "
+		HNS3_DEVARG_TX_FUNC_HINT "=vec|sve|simple|common ");
diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c
index 00167c4..f5c7d71 100644
--- a/drivers/net/hns3/hns3_rxtx.c
+++ b/drivers/net/hns3/hns3_rxtx.c
@@ -2689,13 +2689,26 @@ hns3_get_rx_function(struct rte_eth_dev *dev)
 {
 	struct hns3_adapter *hns = dev->data->dev_private;
 	uint64_t offloads = dev->data->dev_conf.rxmode.offloads;
+	bool vec_allowed, sve_allowed, simple_allowed;
+
+	vec_allowed = hns->rx_vec_allowed &&
+		      hns3_rx_check_vec_support(dev) == 0;
+	sve_allowed = vec_allowed && hns3_check_sve_support();
+	simple_allowed = hns->rx_simple_allowed && !dev->data->scattered_rx &&
+			 (offloads & DEV_RX_OFFLOAD_TCP_LRO) == 0;
+
+	if (hns->rx_func_hint == HNS3_IO_FUNC_HINT_VEC && vec_allowed)
+		return hns3_recv_pkts_vec;
+	if (hns->rx_func_hint == HNS3_IO_FUNC_HINT_SVE && sve_allowed)
+		return hns3_recv_pkts_vec_sve;
+	if (hns->rx_func_hint == HNS3_IO_FUNC_HINT_SIMPLE && simple_allowed)
+		return hns3_recv_pkts;
+	if (hns->rx_func_hint == HNS3_IO_FUNC_HINT_COMMON)
+		return hns3_recv_scattered_pkts;
 
-	if (hns->rx_vec_allowed && hns3_rx_check_vec_support(dev) == 0)
-		return hns3_check_sve_support() ? hns3_recv_pkts_vec_sve :
-		       hns3_recv_pkts_vec;
-
-	if (hns->rx_simple_allowed && !dev->data->scattered_rx &&
-	    (offloads & DEV_RX_OFFLOAD_TCP_LRO) == 0)
+	if (vec_allowed)
+		return hns3_recv_pkts_vec;
+	if (simple_allowed)
 		return hns3_recv_pkts;
 
 	return hns3_recv_scattered_pkts;
@@ -3930,19 +3943,32 @@ hns3_get_tx_function(struct rte_eth_dev *dev, eth_tx_prep_t *prep)
 {
 	uint64_t offloads = dev->data->dev_conf.txmode.offloads;
 	struct hns3_adapter *hns = dev->data->dev_private;
+	bool vec_allowed, sve_allowed, simple_allowed;
 
-	if (hns->tx_vec_allowed && hns3_tx_check_vec_support(dev) == 0) {
-		*prep = NULL;
-		return hns3_check_sve_support() ? hns3_xmit_pkts_vec_sve :
-			hns3_xmit_pkts_vec;
-	}
+	vec_allowed = hns->tx_vec_allowed &&
+		      hns3_tx_check_vec_support(dev) == 0;
+	sve_allowed = vec_allowed && hns3_check_sve_support();
+	simple_allowed = hns->tx_simple_allowed &&
+			 offloads == (offloads & DEV_TX_OFFLOAD_MBUF_FAST_FREE);
 
-	if (hns->tx_simple_allowed &&
-	    offloads == (offloads & DEV_TX_OFFLOAD_MBUF_FAST_FREE)) {
-		*prep = NULL;
+	*prep = NULL;
+
+	if (hns->tx_func_hint == HNS3_IO_FUNC_HINT_VEC && vec_allowed)
+		return hns3_xmit_pkts_vec;
+	if (hns->tx_func_hint == HNS3_IO_FUNC_HINT_SVE && sve_allowed)
+		return hns3_xmit_pkts_vec_sve;
+	if (hns->tx_func_hint == HNS3_IO_FUNC_HINT_SIMPLE && simple_allowed)
 		return hns3_xmit_pkts_simple;
+	if (hns->tx_func_hint == HNS3_IO_FUNC_HINT_COMMON) {
+		*prep = hns3_prep_pkts;
+		return hns3_xmit_pkts;
 	}
 
+	if (vec_allowed)
+		return hns3_xmit_pkts_vec;
+	if (simple_allowed)
+		return hns3_xmit_pkts_simple;
+
 	*prep = hns3_prep_pkts;
 	return hns3_xmit_pkts;
 }
-- 
2.7.4


  reply	other threads:[~2021-03-19  1:07 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-10  6:24 [dpdk-dev] [PATCH 0/9] features and bugfixes for hns3 Min Hu (Connor)
2021-03-10  6:24 ` [dpdk-dev] [PATCH 1/9] net/hns3: support runtime config to select IO burst func Min Hu (Connor)
2021-03-10  6:24 ` [dpdk-dev] [PATCH 2/9] net/hns3: support Tx push quick doorbell to improve perf Min Hu (Connor)
2021-03-10  6:24 ` [dpdk-dev] [PATCH 3/9] net/hns3: support for outer UDP cksum Min Hu (Connor)
2021-03-10  6:24 ` [dpdk-dev] [PATCH 4/9] net/hns3: adjust the format of RAS related structures Min Hu (Connor)
2021-03-10  6:24 ` [dpdk-dev] [PATCH 5/9] net/hns3: delete redundant xstats RAS statistics Min Hu (Connor)
2021-03-10  6:24 ` [dpdk-dev] [PATCH 6/9] net/hns3: support imissed stats for PF/VF Min Hu (Connor)
2021-03-10  6:24 ` [dpdk-dev] [PATCH 7/9] net/hns3: support oerrors stats in PF Min Hu (Connor)
2021-03-10  6:24 ` [dpdk-dev] [PATCH 8/9] net/hns3: support query Tx descriptor status Min Hu (Connor)
2021-03-10  6:24 ` [dpdk-dev] [PATCH 9/9] net/hns3: support query Rx " Min Hu (Connor)
2021-03-17  9:50 ` [dpdk-dev] [PATCH v4 0/8] features and bugfixes for hns3 Min Hu (Connor)
2021-03-17  9:50   ` [dpdk-dev] [PATCH v4 1/8] net/hns3: support runtime config to select IO burst func Min Hu (Connor)
2021-03-17  9:50   ` [dpdk-dev] [PATCH v4 2/8] net/hns3: support for outer UDP cksum Min Hu (Connor)
2021-03-17  9:50   ` [dpdk-dev] [PATCH v4 3/8] net/hns3: adjust the format of RAS related structures Min Hu (Connor)
2021-03-17  9:50   ` [dpdk-dev] [PATCH v4 4/8] net/hns3: delete redundant xstats RAS statistics Min Hu (Connor)
2021-03-17  9:50   ` [dpdk-dev] [PATCH v4 5/8] net/hns3: support imissed stats for PF/VF Min Hu (Connor)
2021-03-17  9:50   ` [dpdk-dev] [PATCH v4 6/8] net/hns3: support oerrors stats in PF Min Hu (Connor)
2021-03-17  9:50   ` [dpdk-dev] [PATCH v4 7/8] net/hns3: support query Tx descriptor status Min Hu (Connor)
2021-03-17  9:50   ` [dpdk-dev] [PATCH v4 8/8] net/hns3: support query Rx " Min Hu (Connor)
2021-03-19  1:07 ` [dpdk-dev] [PATCH v5 0/8] features and bugfixes for hns3 Min Hu (Connor)
2021-03-19  1:07   ` Min Hu (Connor) [this message]
2021-03-22 13:58     ` [dpdk-dev] [PATCH v5 1/8] net/hns3: support runtime config to select IO burst func Ferruh Yigit
2021-03-22 14:03       ` Ferruh Yigit
2021-03-23  3:31       ` fengchengwen
2021-03-23 10:31         ` Ferruh Yigit
2021-03-23 11:22           ` Min Hu (Connor)
2021-03-23  3:37       ` fengchengwen
2021-03-19  1:07   ` [dpdk-dev] [PATCH v5 2/8] net/hns3: support for outer UDP cksum Min Hu (Connor)
2021-03-19  1:07   ` [dpdk-dev] [PATCH v5 3/8] net/hns3: adjust the format of RAS related structures Min Hu (Connor)
2021-03-19  1:07   ` [dpdk-dev] [PATCH v5 4/8] net/hns3: delete redundant xstats RAS statistics Min Hu (Connor)
2021-03-19  1:07   ` [dpdk-dev] [PATCH v5 5/8] net/hns3: support imissed stats for PF/VF Min Hu (Connor)
2021-03-19  1:07   ` [dpdk-dev] [PATCH v5 6/8] net/hns3: support oerrors stats in PF Min Hu (Connor)
2021-03-19  1:07   ` [dpdk-dev] [PATCH v5 7/8] net/hns3: support query Tx descriptor status Min Hu (Connor)
2021-03-19  1:07   ` [dpdk-dev] [PATCH v5 8/8] net/hns3: support query Rx " Min Hu (Connor)
2021-03-23 11:20 ` [dpdk-dev] [PATCH v6 0/8] features and bugfixes for hns3 Min Hu (Connor)
2021-03-23 11:21   ` [dpdk-dev] [PATCH v6 1/8] net/hns3: support runtime config to select IO burst func Min Hu (Connor)
2021-03-23 11:21   ` [dpdk-dev] [PATCH v6 2/8] net/hns3: support for outer UDP cksum Min Hu (Connor)
2021-03-23 11:21   ` [dpdk-dev] [PATCH v6 3/8] net/hns3: adjust the format of RAS related structures Min Hu (Connor)
2021-03-23 11:21   ` [dpdk-dev] [PATCH v6 4/8] net/hns3: delete redundant xstats RAS statistics Min Hu (Connor)
2021-03-23 11:21   ` [dpdk-dev] [PATCH v6 5/8] net/hns3: support imissed stats for PF/VF Min Hu (Connor)
2021-03-23 11:21   ` [dpdk-dev] [PATCH v6 6/8] net/hns3: support oerrors stats in PF Min Hu (Connor)
2021-03-23 11:21   ` [dpdk-dev] [PATCH v6 7/8] net/hns3: support query Tx descriptor status Min Hu (Connor)
2021-03-23 11:21   ` [dpdk-dev] [PATCH v6 8/8] net/hns3: support query Rx " Min Hu (Connor)
2021-03-23 12:49   ` [dpdk-dev] [PATCH v6 0/8] features and bugfixes for hns3 Ferruh Yigit

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