[dpdk-dev] [PATCH v2 3/3] net/hns3: support multiple TC MAC pause

["Min Hu (Connor)" <humin29@huawei.com>]

From: Huisong Li <lihuisong@huawei.com>

MAC PAUSE can take effect on a single TC or multiple TCs, depending on the
hardware. For example, the Kunpeng 920 supports MAC pause in a single TC,
and the Kunpeng 930 supports MAC pause in multiple TCs. This patch
supports MAC PAUSE in multiple TC for some hardware.

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
 drivers/net/hns3/hns3_ethdev.c | 5 ++++-
 drivers/net/hns3/hns3_ethdev.h | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c
index e515125..17b995a 100644
--- a/drivers/net/hns3/hns3_ethdev.c
+++ b/drivers/net/hns3/hns3_ethdev.c
@@ -3317,6 +3317,7 @@ hns3_get_capability(struct hns3_hw *hw)
 		pf->tqp_config_mode = HNS3_FIXED_MAX_TQP_NUM_MODE;
 		hw->rss_info.ipv6_sctp_offload_supported = false;
 		hw->udp_cksum_mode = HNS3_SPECIAL_PORT_SW_CKSUM_MODE;
+		pf->support_multi_tc_pause = false;
 		return 0;
 	}
 
@@ -3337,6 +3338,7 @@ hns3_get_capability(struct hns3_hw *hw)
 	pf->tqp_config_mode = HNS3_FLEX_MAX_TQP_NUM_MODE;
 	hw->rss_info.ipv6_sctp_offload_supported = true;
 	hw->udp_cksum_mode = HNS3_SPECIAL_PORT_HW_CKSUM_MODE;
+	pf->support_multi_tc_pause = true;
 
 	return 0;
 }
@@ -6103,6 +6105,7 @@ static int
 hns3_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 {
 	struct hns3_hw *hw = HNS3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	struct hns3_pf *pf = HNS3_DEV_PRIVATE_TO_PF(dev->data->dev_private);
 	int ret;
 
 	if (fc_conf->high_water || fc_conf->low_water ||
@@ -6132,7 +6135,7 @@ hns3_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 		return -EOPNOTSUPP;
 	}
 
-	if (hw->num_tc > 1) {
+	if (hw->num_tc > 1 && !pf->support_multi_tc_pause) {
 		hns3_err(hw, "in multi-TC scenarios, MAC pause is not supported.");
 		return -EOPNOTSUPP;
 	}
diff --git a/drivers/net/hns3/hns3_ethdev.h b/drivers/net/hns3/hns3_ethdev.h
index 729e1c3..3485614 100644
--- a/drivers/net/hns3/hns3_ethdev.h
+++ b/drivers/net/hns3/hns3_ethdev.h
@@ -783,6 +783,7 @@ struct hns3_pf {
 	uint8_t prio_tc[HNS3_MAX_USER_PRIO]; /* TC indexed by prio */
 	uint16_t pause_time;
 	bool support_fc_autoneg;       /* support FC autonegotiate */
+	bool support_multi_tc_pause;
 
 	uint16_t wanted_umv_size;
 	uint16_t max_umv_size;
-- 
2.7.4