[dpdk-dev] [PATCH 05/10] net/hns3: fix flow control exception
Min Hu (Connor)
humin29 at huawei.com
Wed Mar 31 12:01:39 CEST 2021
From: Huisong Li <lihuisong at huawei.com>
In multi-TC scenarios, MAC pause is not supported. Otherwise, only
TC0 can trigger pause frames, and other TCs cannot trigger pause
frames. In this case, flow control does not meet the expectation.
Fixes: 62e3ccc2b94c ("net/hns3: support flow control")
Cc: stable at dpdk.org
Signed-off-by: Huisong Li <lihuisong at huawei.com>
Signed-off-by: Min Hu (Connor) <humin29 at huawei.com>
---
drivers/net/hns3/hns3_ethdev.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c
index 005e8bf..2bb0c43 100644
--- a/drivers/net/hns3/hns3_ethdev.c
+++ b/drivers/net/hns3/hns3_ethdev.c
@@ -5500,6 +5500,11 @@ hns3_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
return -EOPNOTSUPP;
}
+ if (hw->num_tc > 1) {
+ hns3_err(hw, "in multi-TC scenarios, MAC pause is not supported.");
+ return -EOPNOTSUPP;
+ }
+
hns3_get_fc_mode(hw, fc_conf->mode);
if (hw->requested_mode == hw->current_mode &&
pf->pause_time == fc_conf->pause_time)
--
2.7.4
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