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To: David Hunt <david.hunt@intel.com>, dev@dpdk.org
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From: santosh <santosh.shukla@caviumnetworks.com>
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Subject: Re: [dpdk-dev] [PATCH v4 1/9] net/i40e: add API to convert VF MAC
to VF id
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X-List-Received-Date: Wed, 04 Oct 2017 15:26:29 -0000
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.