net/hns3: support RSS

This patch adds support for RSS of hns3 PMD driver. It included the
follow functions:
In file hns3_rss.c:
1) Set/query hash key, rss_hf by .rss_hash_update/.rss_hash_conf_get ops
   callback functions.
2) Set/query redirection table by .reta_update/.reta_query. ops callback
   functions.
3) Set/query hash algorithm by .filter_ctrl ops callback function when
   the 'filter_type' is RTE_ETH_FILTER_HASH.

In file hns3_flow.c:
1) Set hash key, rss_hf, redirection table and algorithm by .create ops
   callback function.
2) Disable RSS by .destroy or .flush ops callback function.
3) Check the effectiveness of the RSS's configuration by .validate ops
   callback function.

Signed-off-by: Hao Chen <chenhao164@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Chunsong Feng <fengchunsong@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>

doc/guides/nics/features/hns3.ini

@@ -8,6 +8,9 @@ Link status          = Y
 MTU update           = Y
 Unicast MAC filter   = Y
 Multicast MAC filter = Y
+RSS hash             = Y
+RSS key update       = Y
+RSS reta update      = Y
 Flow director        = Y
 Flow API             = Y
 FW version           = Y

drivers/net/hns3/Makefile

@@ -24,6 +24,7 @@ LIBABIVER := 1
 #
 SRCS-$(CONFIG_RTE_LIBRTE_HNS3_PMD) += hns3_ethdev.c
 SRCS-$(CONFIG_RTE_LIBRTE_HNS3_PMD) += hns3_cmd.c
+SRCS-$(CONFIG_RTE_LIBRTE_HNS3_PMD) += hns3_rss.c
 SRCS-$(CONFIG_RTE_LIBRTE_HNS3_PMD) += hns3_flow.c
 SRCS-$(CONFIG_RTE_LIBRTE_HNS3_PMD) += hns3_fdir.c
 

drivers/net/hns3/hns3_ethdev.c

@@ -1027,6 +1027,10 @@ hns3_dev_infos_get(struct rte_eth_dev *eth_dev, struct rte_eth_dev_info *info)
 
 	info->vmdq_queue_num = 0;
 
+	info->reta_size = HNS3_RSS_IND_TBL_SIZE;
+	info->hash_key_size = HNS3_RSS_KEY_SIZE;
+	info->flow_type_rss_offloads = HNS3_ETH_RSS_SUPPORT;
+
 	info->default_rxportconf.burst_size = HNS3_DEFAULT_PORT_CONF_BURST_SIZE;
 	info->default_txportconf.burst_size = HNS3_DEFAULT_PORT_CONF_BURST_SIZE;
 	info->default_rxportconf.nb_queues = HNS3_DEFAULT_PORT_CONF_QUEUES_NUM;
@@ -2572,6 +2576,8 @@ hns3_init_pf(struct rte_eth_dev *eth_dev)
 		goto err_hw_init;
 	}
 
+	hns3_set_default_rss_args(hw);
+
 	return 0;
 
 err_hw_init:
@@ -2597,6 +2603,7 @@ hns3_uninit_pf(struct rte_eth_dev *eth_dev)
 
 	PMD_INIT_FUNC_TRACE();
 
+	hns3_rss_uninit(hns);
 	hns3_fdir_filter_uninit(hns);
 	hns3_uninit_umv_space(hw);
 	hns3_cmd_uninit(hw);
@@ -2630,6 +2637,10 @@ static const struct eth_dev_ops hns3_eth_dev_ops = {
 	.mac_addr_set           = hns3_set_default_mac_addr,
 	.set_mc_addr_list       = hns3_set_mc_mac_addr_list,
 	.link_update            = hns3_dev_link_update,
+	.rss_hash_update        = hns3_dev_rss_hash_update,
+	.rss_hash_conf_get      = hns3_dev_rss_hash_conf_get,
+	.reta_update            = hns3_dev_rss_reta_update,
+	.reta_query             = hns3_dev_rss_reta_query,
 	.filter_ctrl            = hns3_dev_filter_ctrl,
 };
 

drivers/net/hns3/hns3_ethdev.h

@@ -9,6 +9,7 @@
 #include <rte_alarm.h>
 
 #include "hns3_cmd.h"
+#include "hns3_rss.h"
 #include "hns3_fdir.h"
 
 /* Vendor ID */
@@ -346,6 +347,9 @@ struct hns3_hw {
 	struct rte_ether_addr mc_addrs[HNS3_MC_MACADDR_NUM];
 	int mc_addrs_num; /* Multicast mac addresses number */
 
+	/* The configuration info of RSS */
+	struct hns3_rss_conf rss_info;
+
 	uint8_t num_tc;             /* Total number of enabled TCs */
 	uint8_t hw_tc_map;
 	enum hns3_fc_mode current_mode;

drivers/net/hns3/hns3_fdir.h

@@ -152,17 +152,25 @@ struct hns3_fdir_rule_ele {
 	struct hns3_fdir_rule fdir_conf;
 };
 
+/* rss filter list structure */
+struct hns3_rss_conf_ele {
+	TAILQ_ENTRY(hns3_rss_conf_ele) entries;
+	struct hns3_rss_conf filter_info;
+};
+
 /* hns3_flow memory list structure */
 struct hns3_flow_mem {
 	TAILQ_ENTRY(hns3_flow_mem) entries;
 	struct rte_flow *flow;
 };
 
 TAILQ_HEAD(hns3_fdir_rule_list, hns3_fdir_rule_ele);
+TAILQ_HEAD(hns3_rss_filter_list, hns3_rss_conf_ele);
 TAILQ_HEAD(hns3_flow_mem_list, hns3_flow_mem);
 
 struct hns3_process_private {
 	struct hns3_fdir_rule_list fdir_list;
+	struct hns3_rss_filter_list filter_rss_list;
 	struct hns3_flow_mem_list flow_list;
 };