Re: [dpdk-dev] [PATCH] i40e: fix vlan filtering

["Zhang, Helin" <helin.zhang@intel.com>]

> -----Original Message-----
> From: Julien Meunier [mailto:julien.meunier@6wind.com]
> Sent: Tuesday, January 19, 2016 1:19 AM
> To: Zhang, Helin
> Cc: dev@dpdk.org
> Subject: [PATCH] i40e: fix vlan filtering
> 
> VLAN filtering was always performed, even if hw_vlan_filter was disabled.
> During device initialization, default filter RTE_MACVLAN_PERFECT_MATCH
> was applied. In this situation, all incoming VLAN frames were dropped by the
> card (increase of the register RUPP - Rx Unsupported Protocol).
> 
> In order to restore default behavior, if HW VLAN filtering is activated, set a
> filter to match MAC and VLAN. If not, set a filter to only match MAC.
> 
> Signed-off-by: Julien Meunier <julien.meunier@6wind.com>
> Signed-off-by: David Marchand <david.marchand@6wind.com>
> ---
>  drivers/net/i40e/i40e_ethdev.c | 39
> ++++++++++++++++++++++++++++++++++++++-
>  drivers/net/i40e/i40e_ethdev.h |  1 +
>  2 files changed, 39 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
> index bf6220d..ef9d578 100644
> --- a/drivers/net/i40e/i40e_ethdev.c
> +++ b/drivers/net/i40e/i40e_ethdev.c
> @@ -2332,6 +2332,13 @@ i40e_vlan_offload_set(struct rte_eth_dev *dev,
> int mask)
>  	struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data-
> >dev_private);
>  	struct i40e_vsi *vsi = pf->main_vsi;
> 
> +	if (mask & ETH_VLAN_FILTER_MASK) {
> +		if (dev->data->dev_conf.rxmode.hw_vlan_filter)
> +			i40e_vsi_config_vlan_filter(vsi, TRUE);
> +		else
> +			i40e_vsi_config_vlan_filter(vsi, FALSE);
> +	}
> +
>  	if (mask & ETH_VLAN_STRIP_MASK) {
>  		/* Enable or disable VLAN stripping */
>  		if (dev->data->dev_conf.rxmode.hw_vlan_strip)
> @@ -4156,6 +4163,34 @@ fail_mem:
>  	return NULL;
>  }
> 
> +/* Configure vlan filter on or off */
> +int
> +i40e_vsi_config_vlan_filter(struct i40e_vsi *vsi, bool on) {
> +	struct i40e_hw *hw = I40E_VSI_TO_HW(vsi);
> +	struct i40e_mac_filter_info filter;
> +	int ret;
> +
> +	rte_memcpy(&filter.mac_addr,
> +		   (struct ether_addr *)(hw->mac.perm_addr),
> ETH_ADDR_LEN);
> +	ret = i40e_vsi_delete_mac(vsi, &filter.mac_addr);
> +
> +	if (on) {
> +		/* Filter to match MAC and VLAN */
> +		filter.filter_type = RTE_MACVLAN_PERFECT_MATCH;
> +	} else {
> +		/* Filter to match only MAC */
> +		filter.filter_type = RTE_MAC_PERFECT_MATCH;
> +	}
> +
> +	ret |= i40e_vsi_add_mac(vsi, &filter);
How would it be if multiple mac addresses has been configured?
I think this might be ignored in the code changes, right?

Regards,
Helin

> +
> +	if (ret)
> +		PMD_DRV_LOG(INFO, "Update VSI failed to %s vlan filter",
> +			    on ? "enable" : "disable");
> +	return ret;
> +}
> +
>  /* Configure vlan stripping on or off */  int
> i40e_vsi_config_vlan_stripping(struct i40e_vsi *vsi, bool on) @@ -4203,9
> +4238,11 @@ i40e_dev_init_vlan(struct rte_eth_dev *dev)  {
>  	struct rte_eth_dev_data *data = dev->data;
>  	int ret;
> +	int mask = 0;
> 
>  	/* Apply vlan offload setting */
> -	i40e_vlan_offload_set(dev, ETH_VLAN_STRIP_MASK);
> +	mask = ETH_VLAN_STRIP_MASK | ETH_VLAN_FILTER_MASK;
> +	i40e_vlan_offload_set(dev, mask);
> 
>  	/* Apply double-vlan setting, not implemented yet */
> 
> diff --git a/drivers/net/i40e/i40e_ethdev.h
> b/drivers/net/i40e/i40e_ethdev.h index 1f9792b..5505d72 100644
> --- a/drivers/net/i40e/i40e_ethdev.h
> +++ b/drivers/net/i40e/i40e_ethdev.h
> @@ -551,6 +551,7 @@ void i40e_vsi_queues_unbind_intr(struct i40e_vsi
> *vsi);  int i40e_vsi_vlan_pvid_set(struct i40e_vsi *vsi,
>  			   struct i40e_vsi_vlan_pvid_info *info);  int
> i40e_vsi_config_vlan_stripping(struct i40e_vsi *vsi, bool on);
> +int i40e_vsi_config_vlan_filter(struct i40e_vsi *vsi, bool on);
>  uint64_t i40e_config_hena(uint64_t flags);  uint64_t
> i40e_parse_hena(uint64_t flags);  enum i40e_status_code
> i40e_fdir_setup_tx_resources(struct i40e_pf *pf);
> --
> 2.1.4