[dpdk-dev,v4,1/9] net/i40e: add API to convert VF MAC to VF id

  From: "Sexton, Rory" <rory.sexton@intel.com>

Need a way to convert a vf id to a pf id on the host so as to query the pf
for relevant statistics which are used for the frequency changes in the
vm_power_manager app. Used when profiles are passed down from the guest
to the host, allowing the host to map the vfs to pfs.

Signed-off-by: Nemanja Marjanovic <nemanja.marjanovic@intel.com>
Signed-off-by: Rory Sexton <rory.sexton@intel.com>
Signed-off-by: David Hunt <david.hunt@intel.com>
---
 drivers/net/i40e/rte_pmd_i40e.c           | 31 +++++++++++++++++++++++++++++++
 drivers/net/i40e/rte_pmd_i40e.h           | 13 +++++++++++++
 drivers/net/i40e/rte_pmd_i40e_version.map |  7 +++++++
 3 files changed, 51 insertions(+)
  

On Wednesday 04 October 2017 02:45 PM, David Hunt wrote:
> From: "Sexton, Rory" <rory.sexton@intel.com>
>
> Need a way to convert a vf id to a pf id on the host so as to query the pf
> for relevant statistics which are used for the frequency changes in the
> vm_power_manager app. Used when profiles are passed down from the guest
> to the host, allowing the host to map the vfs to pfs.
>
> Signed-off-by: Nemanja Marjanovic <nemanja.marjanovic@intel.com>
> Signed-off-by: Rory Sexton <rory.sexton@intel.com>
> Signed-off-by: David Hunt <david.hunt@intel.com>
> ---
>  drivers/net/i40e/rte_pmd_i40e.c           | 31 +++++++++++++++++++++++++++++++
>  drivers/net/i40e/rte_pmd_i40e.h           | 13 +++++++++++++
>  drivers/net/i40e/rte_pmd_i40e_version.map |  7 +++++++
>  3 files changed, 51 insertions(+)
>
> diff --git a/drivers/net/i40e/rte_pmd_i40e.c b/drivers/net/i40e/rte_pmd_i40e.c
> index f12b7f4..21efb2f 100644
> --- a/drivers/net/i40e/rte_pmd_i40e.c
> +++ b/drivers/net/i40e/rte_pmd_i40e.c
> @@ -2115,3 +2115,34 @@ int rte_pmd_i40e_ptype_mapping_replace(uint8_t port,
>  
>  	return 0;
>  }
> +
> +uint64_t
> +rte_pmd_i40e_query_vfid_by_mac(uint8_t port, uint64_t vf_mac)
> +{
> +	struct rte_eth_dev *dev;
> +	struct ether_addr *vf_mac_addr = (struct ether_addr *)&vf_mac;
> +	struct ether_addr *mac;
> +	struct i40e_pf *pf;
> +	int vf_id;
> +	struct i40e_pf_vf *vf;
> +	uint16_t vf_num;
> +
> +	RTE_ETH_VALID_PORTID_OR_ERR_RET(port, -ENODEV);
> +	dev = &rte_eth_devices[port];
> +
> +	if (!is_i40e_supported(dev))
> +		return -ENOTSUP;
> +
> +	pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
> +	vf_num = pf->vf_num;
> +
> +	for (vf_id = 0; vf_id < vf_num; vf_id++) {
> +		vf = &pf->vfs[vf_id];
> +		mac = &vf->mac_addr;
> +
> +		if (is_same_ether_addr(mac, vf_mac_addr))
> +			return vf_id;
> +	}
> +
> +	return -EINVAL;
> +}
> diff --git a/drivers/net/i40e/rte_pmd_i40e.h b/drivers/net/i40e/rte_pmd_i40e.h
> index 356fa89..a7ae0f0 100644
> --- a/drivers/net/i40e/rte_pmd_i40e.h
> +++ b/drivers/net/i40e/rte_pmd_i40e.h
> @@ -637,4 +637,17 @@ int rte_pmd_i40e_ptype_mapping_replace(uint8_t port,
>  				       uint8_t mask,
>  				       uint32_t pkt_type);
>  
> +/**
> + * On the PF, find VF index based on VF MAC address
> + *
> + * @param port
> + *    pointer to port identifier of the device
> + * @param vf_mac
> + *    the mac address of the vf to determine index of
> + * @return
> + *    -(-22 EINVAL) the vf mac does not exist on this port
> + *    -(!-22) the index of vfid in pf->vfs
> + */
> +uint64_t rte_pmd_i40e_query_vfid_by_mac(uint8_t port, uint64_t vf_mac);
> +

On @return:
- The index of vfid If successful.
- -EINVAL: vf mac address does not exits for this port
- -ENOTSUP: i40e not supported for this port.

and return type should s/uint64_t/int since error case -ve value.
Thanks.