From a06c3b0e9f0a4807ee8ac145f58284ec49f2f33d Mon Sep 17 00:00:00 2001 From: Chengwen Feng Date: Wed, 31 Mar 2021 18:01:40 +0800 Subject: [PATCH] net/hns3: fix flow counter value User could create flow rules with specified counter by the action of RTE_FLOW_ACTION_TYPE_COUNT, but the counter may retain the original value when create. This patch fix the bug by read the counter when creating the rule because the counter is read-clear. Fixes: fcba820d9b9e ("net/hns3: support flow director") Cc: stable@dpdk.org Signed-off-by: Chengwen Feng Signed-off-by: Min Hu (Connor) --- drivers/net/hns3/hns3_flow.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/net/hns3/hns3_flow.c b/drivers/net/hns3/hns3_flow.c index 711eed3f54..098b191909 100644 --- a/drivers/net/hns3/hns3_flow.c +++ b/drivers/net/hns3/hns3_flow.c @@ -158,7 +158,10 @@ hns3_counter_new(struct rte_eth_dev *dev, uint32_t shared, uint32_t id, { struct hns3_adapter *hns = dev->data->dev_private; struct hns3_pf *pf = &hns->pf; + struct hns3_hw *hw = &hns->hw; struct hns3_flow_counter *cnt; + uint64_t value; + int ret; cnt = hns3_counter_lookup(dev, id); if (cnt) { @@ -171,6 +174,13 @@ hns3_counter_new(struct rte_eth_dev *dev, uint32_t shared, uint32_t id, return 0; } + /* Clear the counter by read ops because the counter is read-clear */ + ret = hns3_get_count(hw, id, &value); + if (ret) + return rte_flow_error_set(error, EIO, + RTE_FLOW_ERROR_TYPE_HANDLE, NULL, + "Clear counter failed!"); + cnt = rte_zmalloc("hns3 counter", sizeof(*cnt), 0); if (cnt == NULL) return rte_flow_error_set(error, ENOMEM, -- 2.20.1