On Wed, 19 Oct 2016, Iremonger, Bernard wrote:
> Hi Scott,
>
> <snip>
>
>>>>> Subject: [dpdk-dev] [PATCH] net/ixgbe: fix vlan insert parameter
>>>>> type and its use
>>>>>
>>>>> The final parameter to rte_pmd_ixgbe_set_vf_vlan_insert is uint8_t
>>>>> and treated as a binary flag when it needs to be a uint16_t and
>>>>> treated as a VLAN id. The data sheet (sect 8.2.3.27.13) describes
>>>>> the right most
>>>>> 16 bits as the VLAN id that is to be inserted; the
>>>>> 16.11 code is accepting only a 1 or 0 thus effectively only
>>>>> allowing the VLAN id 1 to be inserted (0 disables the insertion setting).
>>>>>
>>>>> This patch changes the final parm name to represent the data that is
>>>>> being accepted (vlan_id), changes the type to permit all valid VLAN
>>>>> ids, and validates the parameter based on the range of 0 to 4095.
>>>>> Corresponding changes to prototype and documentation in the .h file.
>>>>>
>>>>> Fixes: 49e248223e9f71 ("net/ixgbe: add API for VF management")
>>>>>
>>>>> Signed-off-by: E. Scott Daniels <daniels at research.att.com>
>>>>> ---
>>>>> drivers/net/ixgbe/ixgbe_ethdev.c | 8 ++++----
>>>>> drivers/net/ixgbe/rte_pmd_ixgbe.h | 9 +++++----
>>>>> 2 files changed, 9 insertions(+), 8 deletions(-)
>>>>>
>>>>> diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c
>>>>> b/drivers/net/ixgbe/ixgbe_ethdev.c
>>>>> index 4ca5747..316af73 100644
>>>>> --- a/drivers/net/ixgbe/ixgbe_ethdev.c
>>>>> +++ b/drivers/net/ixgbe/ixgbe_ethdev.c
>>>>> @@ -4727,7 +4727,7 @@
>> rte_pmd_ixgbe_set_vf_mac_anti_spoof(uint8_t
>>>>> port, uint16_t vf, uint8_t on) }
>>>>>
>>>>> int
>>>>> -rte_pmd_ixgbe_set_vf_vlan_insert(uint8_t port, uint16_t vf, uint8_t
>>>>> on)
>>>>> +rte_pmd_ixgbe_set_vf_vlan_insert(uint8_t port, uint16_t vf,
>>>>> +uint16_t
>>>>> +vlan_id)
>>>>> {
>>>>> struct ixgbe_hw *hw;
>>>>> uint32_t ctrl;
>>>>> @@ -4742,13 +4742,13 @@ rte_pmd_ixgbe_set_vf_vlan_insert(uint8_t
>>>> port,
>>>>> uint16_t vf, uint8_t on)
>>>>> if (vf >= dev_info.max_vfs)
>>>>> return -EINVAL;
>>>>>
>>>>> - if (on > 1)
>>>>> + if (vlan_id > 4095)
>>>>> return -EINVAL;
>>>>>
>>>>> hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
>>>>> ctrl = IXGBE_READ_REG(hw, IXGBE_VMVIR(vf));
>>>>> - if (on) {
>>>>> - ctrl = on;
>>>>> + if (vlan_id) {
>>>>> + ctrl = vlan_id;
>>>> I believe this patch is a good idea of an enhancement. But you cannot
>>>> leverage the existing code like this.
>>>> The register IXGBE_VMVIR is only for enable/disable. We cannot write
>>>> the VLAN ID into it.
>>>> If you want to merge the 2 things, enabling/disabling and setting
>>>> VLAN ID together. I think we need a totally new implementation. So
>> NACK.
>>>
>>> Reading the 82599 data sheet (sect 8.2.3.27.13), the change from Scott is
>> correct.
>>> The NACK is not correct.
>>>
>>> However changing the API means that where it is called needs to be
>> changed too.
>>> It is called at present from app/testpmd/cmdline.c line 4731.
>>>
>>>
>> Bernard,
>> Should I add this change to the patch? (Didn't occur to me to look for use).
>>
>> Scott
>
> No, it would be better to make the testpmd change in a separate patch, and
> send a v2 patchset with two patches.
>
Will do, thanks. New to the patch world, so I appreciate your patience!
Scott
>
>>>>> ctrl |= IXGBE_VMVIR_VLANA_DEFAULT;
>>>>> } else {
>>>>> ctrl = 0;
>>>>> diff --git a/drivers/net/ixgbe/rte_pmd_ixgbe.h
>>>>> b/drivers/net/ixgbe/rte_pmd_ixgbe.h
>>>>> index 2fdf530..c2fb826 100644
>>>>> --- a/drivers/net/ixgbe/rte_pmd_ixgbe.h
>>>>> +++ b/drivers/net/ixgbe/rte_pmd_ixgbe.h
>>>>> @@ -99,16 +99,17 @@ int
>> rte_pmd_ixgbe_set_vf_mac_anti_spoof(uint8_t
>>>>> port, uint16_t vf, uint8_t on);
>>>>> * The port identifier of the Ethernet device.
>>>>> * @param vf
>>>>> * ID specifying VF.
>>>>> - * @param on
>>>>> - * 1 - Enable VF's vlan insert.
>>>>> - * 0 - Disable VF's vlan insert
>>>>> + * @param vlan_id
>>>>> + * 0 - Disable VF's vlan insert.
>>>>> + * n - Enable; n is inserted as the vlan id.
>>>>> *
>>>>> * @return
>>>>> * - (0) if successful.
>>>>> * - (-ENODEV) if *port* invalid.
>>>>> * - (-EINVAL) if bad parameter.
>>>>> */
>>>>> -int rte_pmd_ixgbe_set_vf_vlan_insert(uint8_t port, uint16_t vf,
>>>>> uint8_t on);
>>>>> +int rte_pmd_ixgbe_set_vf_vlan_insert(uint8_t port, uint16_t vf,
>>>>> + uint16_t vlan_id);
>>>>>
>>>>> /**
>>>>> * Enable/Disable tx loopback
>>>>> --
>>>>> 1.9.1
>
> Regards,
>
> Bernard.
>
>
