[RFC 9/9] net/idpf: support RSS

[Junfeng Guo <junfeng.guo@intel.com>]

Add RSS support.

Signed-off-by: Beilei Xing <beilei.xing@intel.com>
Signed-off-by: Junfeng Guo <junfeng.guo@intel.com>
---
 drivers/net/idpf/idpf_ethdev.c | 106 +++++++++++++++++++++++++++++++++
 drivers/net/idpf/idpf_ethdev.h |  18 +++++-
 drivers/net/idpf/idpf_vchnl.c  |  93 +++++++++++++++++++++++++++++
 3 files changed, 216 insertions(+), 1 deletion(-)

diff --git a/drivers/net/idpf/idpf_ethdev.c b/drivers/net/idpf/idpf_ethdev.c
index 1a985caf46..2a0304c18e 100644
--- a/drivers/net/idpf/idpf_ethdev.c
+++ b/drivers/net/idpf/idpf_ethdev.c
@@ -85,6 +85,7 @@ idpf_dev_info_get(__rte_unused struct rte_eth_dev *dev, struct rte_eth_dev_info
 	dev_info->max_mtu = dev_info->max_rx_pktlen - IDPF_ETH_OVERHEAD;
 	dev_info->min_mtu = RTE_ETHER_MIN_MTU;
 
+	dev_info->flow_type_rss_offloads = IDPF_RSS_OFFLOAD_ALL;
 	dev_info->max_mac_addrs = IDPF_NUM_MACADDR_MAX;
 	dev_info->dev_capa &= ~RTE_ETH_DEV_CAPA_FLOW_RULE_KEEP;
 	dev_info->rx_offload_capa =
@@ -292,9 +293,96 @@ idpf_init_vport(struct rte_eth_dev *dev)
 	return 0;
 }
 
+static int
+idpf_config_rss(struct idpf_vport *vport)
+{
+	int ret;
+
+	ret = idpf_set_rss_key(vport);
+	if (ret) {
+		PMD_INIT_LOG(ERR, "Failed to configure RSS key");
+		return ret;
+	}
+
+	ret = idpf_set_rss_lut(vport);
+	if (ret) {
+		PMD_INIT_LOG(ERR, "Failed to configure RSS lut");
+		return ret;
+	}
+
+	ret = idpf_set_rss_hash(vport);
+	if (ret) {
+		PMD_INIT_LOG(ERR, "Failed to configure RSS hash");
+		return ret;
+	}
+
+	return ret;
+}
+
+static int
+idpf_init_rss(struct idpf_vport *vport)
+{
+	struct rte_eth_rss_conf *rss_conf;
+	uint16_t i, nb_q, lut_size;
+	int ret = 0;
+
+	rss_conf = &vport->dev_data->dev_conf.rx_adv_conf.rss_conf;
+	nb_q = vport->num_rx_q;
+
+	vport->rss_key = (uint8_t *)rte_zmalloc("rss_key",
+					     vport->rss_key_size, 0);
+	if (!vport->rss_key) {
+		PMD_INIT_LOG(ERR, "Failed to allocate RSS key");
+		ret = -ENOMEM;
+		goto err_key;
+	}
+
+	lut_size = vport->rss_lut_size;
+	vport->rss_lut = (uint32_t *)rte_zmalloc("rss_lut",
+					      sizeof(uint32_t) * lut_size, 0);
+	if (!vport->rss_lut) {
+		PMD_INIT_LOG(ERR, "Failed to allocate RSS lut");
+		ret = -ENOMEM;
+		goto err_lut;
+	}
+
+	if (!rss_conf->rss_key) {
+		for (i = 0; i < vport->rss_key_size; i++)
+			vport->rss_key[i] = (uint8_t)rte_rand();
+	} else {
+		rte_memcpy(vport->rss_key, rss_conf->rss_key,
+			   RTE_MIN(rss_conf->rss_key_len,
+				   vport->rss_key_size));
+	}
+
+	for (i = 0; i < lut_size; i++)
+		vport->rss_lut[i] = i % nb_q;
+
+	vport->rss_hf = IECM_DEFAULT_RSS_HASH_EXPANDED;
+
+	ret = idpf_config_rss(vport);
+	if (ret) {
+		PMD_INIT_LOG(ERR, "Failed to configure RSS");
+		goto err_cfg;
+	}
+
+	return ret;
+
+err_cfg:
+	rte_free(vport->rss_lut);
+	vport->rss_lut = NULL;
+err_lut:
+	rte_free(vport->rss_key);
+	vport->rss_key = NULL;
+err_key:
+	return ret;
+}
+
 static int
 idpf_dev_configure(struct rte_eth_dev *dev)
 {
+	struct idpf_vport *vport =
+		(struct idpf_vport *)dev->data->dev_private;
 	int ret = 0;
 
 	if (dev->data->dev_conf.rxmode.mq_mode & RTE_ETH_MQ_RX_RSS_FLAG)
@@ -319,6 +407,14 @@ idpf_dev_configure(struct rte_eth_dev *dev)
 		return ret;
 	}
 
+	if (adapter->caps->rss_caps) {
+		ret = idpf_init_rss(vport);
+		if (ret) {
+			PMD_INIT_LOG(ERR, "Failed to init rss");
+			return ret;
+		}
+	}
+
 	return ret;
 }
 
@@ -451,6 +547,16 @@ idpf_dev_close(struct rte_eth_dev *dev)
 	idpf_dev_stop(dev);
 	idpf_destroy_vport(vport);
 
+	if (vport->rss_lut) {
+		rte_free(vport->rss_lut);
+		vport->rss_lut = NULL;
+	}
+
+	if (vport->rss_key) {
+		rte_free(vport->rss_key);
+		vport->rss_key = NULL;
+	}
+
 	return 0;
 }
 
diff --git a/drivers/net/idpf/idpf_ethdev.h b/drivers/net/idpf/idpf_ethdev.h
index 5520b2d6ce..0b8e163bbb 100644
--- a/drivers/net/idpf/idpf_ethdev.h
+++ b/drivers/net/idpf/idpf_ethdev.h
@@ -43,6 +43,20 @@
 #define IDPF_ETH_OVERHEAD \
 	(RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN + IDPF_VLAN_TAG_SIZE * 2)
 
+#define IDPF_RSS_OFFLOAD_ALL ( \
+	RTE_ETH_RSS_IPV4		| \
+	RTE_ETH_RSS_FRAG_IPV4		| \
+	RTE_ETH_RSS_NONFRAG_IPV4_TCP	| \
+	RTE_ETH_RSS_NONFRAG_IPV4_UDP	| \
+	RTE_ETH_RSS_NONFRAG_IPV4_SCTP	| \
+	RTE_ETH_RSS_NONFRAG_IPV4_OTHER	| \
+	RTE_ETH_RSS_IPV6		| \
+	RTE_ETH_RSS_FRAG_IPV6		| \
+	RTE_ETH_RSS_NONFRAG_IPV6_TCP	| \
+	RTE_ETH_RSS_NONFRAG_IPV6_UDP	| \
+	RTE_ETH_RSS_NONFRAG_IPV6_SCTP	| \
+	RTE_ETH_RSS_NONFRAG_IPV6_OTHER)
+
 #ifndef ETH_ADDR_LEN
 #define ETH_ADDR_LEN		6
 #endif
@@ -196,7 +210,9 @@ int idpf_check_api_version(struct idpf_adapter *adapter);
 int idpf_get_caps(struct idpf_adapter *adapter);
 int idpf_create_vport(__rte_unused struct rte_eth_dev *dev);
 int idpf_destroy_vport(struct idpf_vport *vport);
-
+int idpf_set_rss_key(struct idpf_vport *vport);
+int idpf_set_rss_lut(struct idpf_vport *vport);
+int idpf_set_rss_hash(struct idpf_vport *vport);
 int idpf_config_rxqs(struct idpf_vport *vport);
 int idpf_config_txqs(struct idpf_vport *vport);
 int idpf_switch_queue(struct idpf_vport *vport, uint16_t qid,
diff --git a/drivers/net/idpf/idpf_vchnl.c b/drivers/net/idpf/idpf_vchnl.c
index 74ed555449..fb7cee6915 100644
--- a/drivers/net/idpf/idpf_vchnl.c
+++ b/drivers/net/idpf/idpf_vchnl.c
@@ -441,6 +441,99 @@ idpf_destroy_vport(struct idpf_vport *vport)
 	return err;
 }
 
+int
+idpf_set_rss_key(struct idpf_vport *vport)
+{
+	struct virtchnl2_rss_key *rss_key;
+	struct idpf_cmd_info args;
+	int len, err;
+
+	len = sizeof(*rss_key) + sizeof(rss_key->key[0]) *
+		(vport->rss_key_size - 1);
+	rss_key = rte_zmalloc("rss_key", len, 0);
+	if (!rss_key)
+		return -ENOMEM;
+
+	rss_key->vport_id = vport->vport_id;
+	rss_key->key_len = vport->rss_key_size;
+	rte_memcpy(rss_key->key, vport->rss_key,
+		   sizeof(rss_key->key[0]) * vport->rss_key_size);
+
+	memset(&args, 0, sizeof(args));
+	args.ops = VIRTCHNL2_OP_SET_RSS_KEY;
+	args.in_args = (uint8_t *)rss_key;
+	args.in_args_size = len;
+	args.out_buffer = adapter->mbx_resp;
+	args.out_size = IDPF_DFLT_MBX_BUF_SIZE;
+
+	err = idpf_execute_vc_cmd(adapter, &args);
+	if (err) {
+		PMD_DRV_LOG(ERR, "Failed to execute command of VIRTCHNL2_OP_SET_RSS_KEY");
+		return err;
+	}
+
+	rte_free(rss_key);
+	return err;
+}
+
+int
+idpf_set_rss_lut(struct idpf_vport *vport)
+{
+	struct virtchnl2_rss_lut *rss_lut;
+	struct idpf_cmd_info args;
+	int len, err;
+
+	len = sizeof(*rss_lut) + sizeof(rss_lut->lut[0]) *
+		(vport->rss_lut_size - 1);
+	rss_lut = rte_zmalloc("rss_lut", len, 0);
+	if (!rss_lut)
+		return -ENOMEM;
+
+	rss_lut->vport_id = vport->vport_id;
+	rss_lut->lut_entries = vport->rss_lut_size;
+	rte_memcpy(rss_lut->lut, vport->rss_lut,
+		   sizeof(rss_lut->lut[0]) * vport->rss_lut_size);
+
+	memset(&args, 0, sizeof(args));
+	args.ops = VIRTCHNL2_OP_SET_RSS_LUT;
+	args.in_args = (uint8_t *)rss_lut;
+	args.in_args_size = len;
+	args.out_buffer = adapter->mbx_resp;
+	args.out_size = IDPF_DFLT_MBX_BUF_SIZE;
+
+	err = idpf_execute_vc_cmd(adapter, &args);
+	if (err)
+		PMD_DRV_LOG(ERR, "Failed to execute command of VIRTCHNL2_OP_SET_RSS_LUT");
+
+	rte_free(rss_lut);
+	return err;
+}
+
+int
+idpf_set_rss_hash(struct idpf_vport *vport)
+{
+	struct virtchnl2_rss_hash rss_hash;
+	struct idpf_cmd_info args;
+	int err;
+
+	memset(&rss_hash, 0, sizeof(rss_hash));
+	rss_hash.ptype_groups = vport->rss_hf;
+	rss_hash.vport_id = vport->vport_id;
+
+	memset(&args, 0, sizeof(args));
+	args.ops = VIRTCHNL2_OP_SET_RSS_HASH;
+	args.in_args = (uint8_t *)&rss_hash;
+	args.in_args_size = sizeof(rss_hash);
+	args.out_buffer = adapter->mbx_resp;
+	args.out_size = IDPF_DFLT_MBX_BUF_SIZE;
+
+	err = idpf_execute_vc_cmd(adapter, &args);
+	if (err)
+		PMD_DRV_LOG(ERR, "Failed to execute command of OP_SET_RSS_HASH");
+
+	return err;
+}
+
 #define IDPF_RX_BUF_STRIDE		64
 int
 idpf_config_rxqs(struct idpf_vport *vport)
-- 
2.25.1