[dpdk-dev] [PATCH 27/37] net/txgbe: add TM configuration init and uninit

[Jiawen Wu <jiawenwu@trustnetic.com>]

Add traffic manager configuration init and uninit operations.

Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
---
 drivers/net/txgbe/meson.build    |  1 +
 drivers/net/txgbe/txgbe_ethdev.c | 16 +++++++++
 drivers/net/txgbe/txgbe_ethdev.h | 60 ++++++++++++++++++++++++++++++++
 drivers/net/txgbe/txgbe_tm.c     | 57 ++++++++++++++++++++++++++++++
 4 files changed, 134 insertions(+)
 create mode 100644 drivers/net/txgbe/txgbe_tm.c

diff --git a/drivers/net/txgbe/meson.build b/drivers/net/txgbe/meson.build
index bb1683631..352baad8b 100644
--- a/drivers/net/txgbe/meson.build
+++ b/drivers/net/txgbe/meson.build
@@ -11,6 +11,7 @@ sources = files(
 	'txgbe_ptypes.c',
 	'txgbe_pf.c',
 	'txgbe_rxtx.c',
+	'txgbe_tm.c',
 )
 
 deps += ['hash']
diff --git a/drivers/net/txgbe/txgbe_ethdev.c b/drivers/net/txgbe/txgbe_ethdev.c
index 337ebf2e0..2b73abae6 100644
--- a/drivers/net/txgbe/txgbe_ethdev.c
+++ b/drivers/net/txgbe/txgbe_ethdev.c
@@ -704,6 +704,9 @@ eth_txgbe_dev_init(struct rte_eth_dev *eth_dev, void *init_params __rte_unused)
 	/* initialize bandwidth configuration info */
 	memset(bw_conf, 0, sizeof(struct txgbe_bw_conf));
 
+	/* initialize Traffic Manager configuration */
+	txgbe_tm_conf_init(eth_dev);
+
 	return 0;
 }
 
@@ -1545,6 +1548,7 @@ txgbe_dev_start(struct rte_eth_dev *dev)
 	int status;
 	uint16_t vf, idx;
 	uint32_t *link_speeds;
+	struct txgbe_tm_conf *tm_conf = TXGBE_DEV_TM_CONF(dev);
 
 	PMD_INIT_FUNC_TRACE();
 
@@ -1748,6 +1752,11 @@ txgbe_dev_start(struct rte_eth_dev *dev)
 	txgbe_l2_tunnel_conf(dev);
 	txgbe_filter_restore(dev);
 
+	if (tm_conf->root && !tm_conf->committed)
+		PMD_DRV_LOG(WARNING,
+			    "please call hierarchy_commit() "
+			    "before starting the port");
+
 	/*
 	 * Update link status right before return, because it may
 	 * start link configuration process in a separate thread.
@@ -1780,6 +1789,7 @@ txgbe_dev_stop(struct rte_eth_dev *dev)
 	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 	struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
 	int vf;
+	struct txgbe_tm_conf *tm_conf = TXGBE_DEV_TM_CONF(dev);
 
 	if (hw->adapter_stopped)
 		return 0;
@@ -1832,6 +1842,9 @@ txgbe_dev_stop(struct rte_eth_dev *dev)
 		intr_handle->intr_vec = NULL;
 	}
 
+	/* reset hierarchy commit */
+	tm_conf->committed = false;
+
 	adapter->rss_reta_updated = 0;
 	wr32m(hw, TXGBE_LEDCTL, 0xFFFFFFFF, TXGBE_LEDCTL_SEL_MASK);
 
@@ -1947,6 +1960,9 @@ txgbe_dev_close(struct rte_eth_dev *dev)
 	/* clear all the filters list */
 	txgbe_filterlist_flush();
 
+	/* Remove all Traffic Manager configuration */
+	txgbe_tm_conf_uninit(dev);
+
 	return ret;
 }
 
diff --git a/drivers/net/txgbe/txgbe_ethdev.h b/drivers/net/txgbe/txgbe_ethdev.h
index 1df74ab9b..0f1a39918 100644
--- a/drivers/net/txgbe/txgbe_ethdev.h
+++ b/drivers/net/txgbe/txgbe_ethdev.h
@@ -14,6 +14,7 @@
 #include <rte_hash.h>
 #include <rte_hash_crc.h>
 #include <rte_ethdev.h>
+#include <rte_tm_driver.h>
 
 /* need update link, bit flag */
 #define TXGBE_FLAG_NEED_LINK_UPDATE (uint32_t)(1 << 0)
@@ -273,6 +274,60 @@ struct txgbe_bw_conf {
 	uint8_t tc_num; /* Number of TCs. */
 };
 
+/* Struct to store Traffic Manager shaper profile. */
+struct txgbe_tm_shaper_profile {
+	TAILQ_ENTRY(txgbe_tm_shaper_profile) node;
+	uint32_t shaper_profile_id;
+	uint32_t reference_count;
+	struct rte_tm_shaper_params profile;
+};
+
+TAILQ_HEAD(txgbe_shaper_profile_list, txgbe_tm_shaper_profile);
+
+/* Struct to store Traffic Manager node configuration. */
+struct txgbe_tm_node {
+	TAILQ_ENTRY(txgbe_tm_node) node;
+	uint32_t id;
+	uint32_t priority;
+	uint32_t weight;
+	uint32_t reference_count;
+	uint16_t no;
+	struct txgbe_tm_node *parent;
+	struct txgbe_tm_shaper_profile *shaper_profile;
+	struct rte_tm_node_params params;
+};
+
+TAILQ_HEAD(txgbe_tm_node_list, txgbe_tm_node);
+
+/* The configuration of Traffic Manager */
+struct txgbe_tm_conf {
+	struct txgbe_shaper_profile_list shaper_profile_list;
+	struct txgbe_tm_node *root; /* root node - port */
+	struct txgbe_tm_node_list tc_list; /* node list for all the TCs */
+	struct txgbe_tm_node_list queue_list; /* node list for all the queues */
+	/**
+	 * The number of added TC nodes.
+	 * It should be no more than the TC number of this port.
+	 */
+	uint32_t nb_tc_node;
+	/**
+	 * The number of added queue nodes.
+	 * It should be no more than the queue number of this port.
+	 */
+	uint32_t nb_queue_node;
+	/**
+	 * This flag is used to check if APP can change the TM node
+	 * configuration.
+	 * When it's true, means the configuration is applied to HW,
+	 * APP should not change the configuration.
+	 * As we don't support on-the-fly configuration, when starting
+	 * the port, APP should call the hierarchy_commit API to set this
+	 * flag to true. When stopping the port, this flag should be set
+	 * to false.
+	 */
+	bool committed;
+};
+
 /*
  * Structure to store private data for each driver instance (for each port).
  */
@@ -295,6 +350,7 @@ struct txgbe_adapter {
 	struct rte_timecounter      systime_tc;
 	struct rte_timecounter      rx_tstamp_tc;
 	struct rte_timecounter      tx_tstamp_tc;
+	struct txgbe_tm_conf        tm_conf;
 
 	/* For RSS reta table update */
 	uint8_t rss_reta_updated;
@@ -345,6 +401,8 @@ struct txgbe_adapter {
 #define TXGBE_DEV_BW_CONF(dev) \
 	(&((struct txgbe_adapter *)(dev)->data->dev_private)->bw_conf)
 
+#define TXGBE_DEV_TM_CONF(dev) \
+	(&((struct txgbe_adapter *)(dev)->data->dev_private)->tm_conf)
 
 /*
  * RX/TX function prototypes
@@ -500,6 +558,8 @@ int txgbe_clear_all_l2_tn_filter(struct rte_eth_dev *dev);
 int txgbe_vt_check(struct txgbe_hw *hw);
 int txgbe_set_vf_rate_limit(struct rte_eth_dev *dev, uint16_t vf,
 			    uint16_t tx_rate, uint64_t q_msk);
+void txgbe_tm_conf_init(struct rte_eth_dev *dev);
+void txgbe_tm_conf_uninit(struct rte_eth_dev *dev);
 int txgbe_set_queue_rate_limit(struct rte_eth_dev *dev, uint16_t queue_idx,
 			       uint16_t tx_rate);
 int txgbe_rss_conf_init(struct txgbe_rte_flow_rss_conf *out,
diff --git a/drivers/net/txgbe/txgbe_tm.c b/drivers/net/txgbe/txgbe_tm.c
new file mode 100644
index 000000000..78f426964
--- /dev/null
+++ b/drivers/net/txgbe/txgbe_tm.c
@@ -0,0 +1,57 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2015-2020
+ */
+
+#include <rte_malloc.h>
+
+#include "txgbe_ethdev.h"
+
+void
+txgbe_tm_conf_init(struct rte_eth_dev *dev)
+{
+	struct txgbe_tm_conf *tm_conf = TXGBE_DEV_TM_CONF(dev);
+
+	/* initialize shaper profile list */
+	TAILQ_INIT(&tm_conf->shaper_profile_list);
+
+	/* initialize node configuration */
+	tm_conf->root = NULL;
+	TAILQ_INIT(&tm_conf->queue_list);
+	TAILQ_INIT(&tm_conf->tc_list);
+	tm_conf->nb_tc_node = 0;
+	tm_conf->nb_queue_node = 0;
+	tm_conf->committed = false;
+}
+
+void
+txgbe_tm_conf_uninit(struct rte_eth_dev *dev)
+{
+	struct txgbe_tm_conf *tm_conf = TXGBE_DEV_TM_CONF(dev);
+	struct txgbe_tm_shaper_profile *shaper_profile;
+	struct txgbe_tm_node *tm_node;
+
+	/* clear node configuration */
+	while ((tm_node = TAILQ_FIRST(&tm_conf->queue_list))) {
+		TAILQ_REMOVE(&tm_conf->queue_list, tm_node, node);
+		rte_free(tm_node);
+	}
+	tm_conf->nb_queue_node = 0;
+	while ((tm_node = TAILQ_FIRST(&tm_conf->tc_list))) {
+		TAILQ_REMOVE(&tm_conf->tc_list, tm_node, node);
+		rte_free(tm_node);
+	}
+	tm_conf->nb_tc_node = 0;
+	if (tm_conf->root) {
+		rte_free(tm_conf->root);
+		tm_conf->root = NULL;
+	}
+
+	/* Remove all shaper profiles */
+	while ((shaper_profile =
+	       TAILQ_FIRST(&tm_conf->shaper_profile_list))) {
+		TAILQ_REMOVE(&tm_conf->shaper_profile_list,
+			     shaper_profile, node);
+		rte_free(shaper_profile);
+	}
+}
+
-- 
2.18.4