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

[Julien Meunier]

Hello,

Yes, you are right. Even if VLAN filtering is configured most of the 
time during initialization, we should managed the case of multiple MAC 
addresses already configured.

I will send you a v2 patch with this modification, use ether_addr_copy 
and add additional debug messages.

Regards,

On 01/20/2016 06:00 AM, Zhang, Helin wrote:
>> -----Original Message-----
>> From: Julien Meunier [mailto:julien.meunier at 6wind.com]
>> Sent: Tuesday, January 19, 2016 1:19 AM
>> To: Zhang, Helin
>> Cc:dev at 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 at 6wind.com>
>> Signed-off-by: David Marchand<david.marchand at 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

-- 
Julien MEUNIER
6WIND