Re: [dpdk-stable] [PATCH v2] net/i40e: fix flow FDIR enable issue

[Ye Xiaolong <xiaolong.ye@intel.com>]

On 05/21, Wei Zhao wrote:
>When we flush flow FDIR, all queues are disabled for FDIR.
>If FDIR rule is created again, then the flow list is empty,
>as it is the first time to create rule after flush fdir filter,
>so we need to enable FDIR for all queues. And also, disable FDIR
>for queues should be done in function i40e_flow_flush_fdir_filter().
>
>Fixes: 1491f63c7559 ("net/i40e: fix flush of flow director filter")
>Fixes: 6ae9b2b5e8c2 ("net/i40e: cache flow director enable value in Rx queue")
>Cc: stable@dpdk.org
>
>Signed-off-by: Wei Zhao <wei.zhao1@intel.com>
>
>---
>
>v2:
>update log info
>---
> drivers/net/i40e/i40e_flow.c | 10 +++++++---
> 1 file changed, 7 insertions(+), 3 deletions(-)
>
>diff --git a/drivers/net/i40e/i40e_flow.c b/drivers/net/i40e/i40e_flow.c
>index 25c77e7aa..8f8df6fae 100644
>--- a/drivers/net/i40e/i40e_flow.c
>+++ b/drivers/net/i40e/i40e_flow.c
>@@ -3462,6 +3462,10 @@ i40e_flow_parse_fdir_filter(struct rte_eth_dev *dev,
> 		}
> 	}
> 
>+	/* If create the first fdir rule, enable fdir check for rx queues */
>+	if (TAILQ_EMPTY(&pf->fdir.fdir_list))
>+		i40e_fdir_rx_proc_enable(dev, 1);
>+
> 	return 0;
> err:
> 	i40e_fdir_teardown(pf);
>@@ -5330,9 +5334,6 @@ i40e_flow_flush(struct rte_eth_dev *dev, struct rte_flow_error *error)
> 		return -rte_errno;
> 	}
> 
>-	/* Disable FDIR processing as all FDIR rules are now flushed */
>-	i40e_fdir_rx_proc_enable(dev, 0);
>-
> 	return ret;
> }
> 
>@@ -5368,6 +5369,9 @@ i40e_flow_flush_fdir_filter(struct i40e_pf *pf)
> 		for (pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
> 		     pctype <= I40E_FILTER_PCTYPE_L2_PAYLOAD; pctype++)
> 			pf->fdir.inset_flag[pctype] = 0;
>+
>+		/* Disable FDIR processing as all FDIR rules are now flushed */
>+		i40e_fdir_rx_proc_enable(dev, 0);
> 	}
> 
> 	return ret;
>-- 
>2.19.1
>

Applied to dpdk-next-net-intel, Thanks.