[dpdk-dev] [PATCH v5] net/i40e: fix mirror rule reset when port is stopped

[Ananyev, Konstantin]

Hi Wei,

> 
> When an i40e PF port is stopped, all mirror rules should be removed.
> All rule related software and hardware resources should also be
> removed.

Could you clarify why we have to remove all mirror rules when PF is stopped?
As I remember mirror rule can direct to VF, which still can be running, no?
Konstantin 

> 
> Fixes: a4def5edf0fc ("i40e: enable port mirroring")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Wei Dai <wei.dai at intel.com>
> Tested-by: Lijuan Tu <lijuanx.a.tu at intel.com>
> ---
>  drivers/net/i40e/i40e_ethdev.c | 21 ++++++++++++++++++++-
>  1 file changed, 20 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
> index f12aefa..14cf6c0 100644
> --- a/drivers/net/i40e/i40e_ethdev.c
> +++ b/drivers/net/i40e/i40e_ethdev.c
> @@ -361,6 +361,12 @@ static int i40e_dev_sync_phy_type(struct i40e_hw *hw);
>  static void i40e_configure_registers(struct i40e_hw *hw);
>  static void i40e_hw_init(struct rte_eth_dev *dev);
>  static int i40e_config_qinq(struct i40e_hw *hw, struct i40e_vsi *vsi);
> +static enum i40e_status_code i40e_aq_del_mirror_rule(struct i40e_hw *hw,
> +						     uint16_t seid,
> +						     uint16_t rule_type,
> +						     uint16_t *entries,
> +						     uint16_t count,
> +						     uint16_t rule_id);
>  static int i40e_mirror_rule_set(struct rte_eth_dev *dev,
>  			struct rte_eth_mirror_conf *mirror_conf,
>  			uint8_t sw_id, uint8_t on);
> @@ -2069,6 +2075,7 @@ i40e_dev_stop(struct rte_eth_dev *dev)
>  	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
>  	struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
>  	int i;
> +	int ret;
> 
>  	if (hw->adapter_stopped == 1)
>  		return;
> @@ -2096,10 +2103,22 @@ i40e_dev_stop(struct rte_eth_dev *dev)
> 
>  	/* Remove all mirror rules */
>  	while ((p_mirror = TAILQ_FIRST(&pf->mirror_list))) {
> +		ret = i40e_aq_del_mirror_rule(hw,
> +					      pf->main_vsi->veb->seid,
> +					      p_mirror->rule_type,
> +					      p_mirror->entries,
> +					      p_mirror->num_entries,
> +					      p_mirror->id);
> +		if (ret < 0)
> +			PMD_DRV_LOG(ERR, "failed to remove mirror rule: "
> +				    "status = %d, aq_err = %d.", ret,
> +				    hw->aq.asq_last_status);
> +
> +		/* remove mirror software resource any way */
>  		TAILQ_REMOVE(&pf->mirror_list, p_mirror, rules);
>  		rte_free(p_mirror);
> +		pf->nb_mirror_rule--;
>  	}
> -	pf->nb_mirror_rule = 0;
> 
>  	if (!rte_intr_allow_others(intr_handle))
>  		/* resume to the default handler */
> --
> 2.7.5