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Date: Thu, 23 May 2024 14:42:15 -0700
From: Jacob Keller <jacob.e.keller@...el.com>
To: Karthik Sundaravel <ksundara@...hat.com>, <jesse.brandeburg@...el.com>,
<wojciech.drewek@...el.com>, <sumang@...vell.com>,
<anthony.l.nguyen@...el.com>, <davem@...emloft.net>, <edumazet@...gle.com>,
<kuba@...nel.org>, <pabeni@...hat.com>, <intel-wired-lan@...ts.osuosl.org>,
<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <horms@...nel.org>
CC: <pmenzel@...gen.mpg.de>, <jiri@...nulli.us>,
<michal.swiatkowski@...ux.intel.com>, <bcreeley@....com>,
<rjarry@...hat.com>, <aharivel@...hat.com>, <vchundur@...hat.com>,
<cfontain@...hat.com>
Subject: Re: [PATCH iwl-next v11] ice: Add get/set hw address for VFs using
devlink commands
On 5/20/2024 3:20 AM, Karthik Sundaravel wrote:
> Changing the MAC address of the VFs is currently unsupported via devlink.
> Add the function handlers to set and get the HW address for the VFs.
>
> Signed-off-by: Karthik Sundaravel <ksundara@...hat.com>
> ---
> .../ethernet/intel/ice/devlink/devlink_port.c | 59 ++++++++++++++++++-
> drivers/net/ethernet/intel/ice/ice_sriov.c | 32 +++++++---
> drivers/net/ethernet/intel/ice/ice_sriov.h | 8 +++
> 3 files changed, 89 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/net/ethernet/intel/ice/devlink/devlink_port.c b/drivers/net/ethernet/intel/ice/devlink/devlink_port.c
> index c9fbeebf7fb9..00fed5a61d62 100644
> --- a/drivers/net/ethernet/intel/ice/devlink/devlink_port.c
> +++ b/drivers/net/ethernet/intel/ice/devlink/devlink_port.c
> @@ -372,6 +372,62 @@ void ice_devlink_destroy_pf_port(struct ice_pf *pf)
> devl_port_unregister(&pf->devlink_port);
> }
>
> +/**
> + * ice_devlink_port_get_vf_fn_mac - .port_fn_hw_addr_get devlink handler
> + * @port: devlink port structure
> + * @hw_addr: MAC address of the port
> + * @hw_addr_len: length of MAC address
> + * @extack: extended netdev ack structure
> + *
> + * Callback for the devlink .port_fn_hw_addr_get operation
> + * Return: zero on success or an error code on failure.
> + */
> +static int ice_devlink_port_get_vf_fn_mac(struct devlink_port *port,
> + u8 *hw_addr, int *hw_addr_len,
> + struct netlink_ext_ack *extack)
> +{
> + struct ice_vf *vf = container_of(port, struct ice_vf, devlink_port);
> +
> + ether_addr_copy(hw_addr, vf->dev_lan_addr);
> + *hw_addr_len = ETH_ALEN;
> +
> + return 0;
> +}
> +
> +/**
> + * ice_devlink_port_set_vf_fn_mac - .port_fn_hw_addr_set devlink handler
> + * @port: devlink port structure
> + * @hw_addr: MAC address of the port
> + * @hw_addr_len: length of MAC address
> + * @extack: extended netdev ack structure
> + *
> + * Callback for the devlink .port_fn_hw_addr_set operation
> + * Return: zero on success or an error code on failure.
> + */
> +static int ice_devlink_port_set_vf_fn_mac(struct devlink_port *port,
> + const u8 *hw_addr,
> + int hw_addr_len,
> + struct netlink_ext_ack *extack)
> +
> +{
> + struct devlink_port_attrs *attrs = &port->attrs;
> + struct devlink_port_pci_vf_attrs *pci_vf;
> + struct devlink *devlink = port->devlink;
> + struct ice_pf *pf;
> + u16 vf_id;
> +
> + pf = devlink_priv(devlink);
> + pci_vf = &attrs->pci_vf;
> + vf_id = pci_vf->vf;
> +
> + return __ice_set_vf_mac(pf, vf_id, hw_addr);
> +}
> +
> +static const struct devlink_port_ops ice_devlink_vf_port_ops = {
> + .port_fn_hw_addr_get = ice_devlink_port_get_vf_fn_mac,
> + .port_fn_hw_addr_set = ice_devlink_port_set_vf_fn_mac,
> +};
> +
> /**
> * ice_devlink_create_vf_port - Create a devlink port for this VF
> * @vf: the VF to create a port for
> @@ -407,7 +463,8 @@ int ice_devlink_create_vf_port(struct ice_vf *vf)
> devlink_port_attrs_set(devlink_port, &attrs);
> devlink = priv_to_devlink(pf);
>
> - err = devl_port_register(devlink, devlink_port, vsi->idx);
> + err = devl_port_register_with_ops(devlink, devlink_port, vsi->idx,
> + &ice_devlink_vf_port_ops);
> if (err) {
> dev_err(dev, "Failed to create devlink port for VF %d, error %d\n",
> vf->vf_id, err);
> diff --git a/drivers/net/ethernet/intel/ice/ice_sriov.c b/drivers/net/ethernet/intel/ice/ice_sriov.c
> index 067712f4923f..dd1583b0fd90 100644
> --- a/drivers/net/ethernet/intel/ice/ice_sriov.c
> +++ b/drivers/net/ethernet/intel/ice/ice_sriov.c
> @@ -1416,21 +1416,22 @@ ice_get_vf_cfg(struct net_device *netdev, int vf_id, struct ifla_vf_info *ivi)
> }
>
> /**
> - * ice_set_vf_mac
> - * @netdev: network interface device structure
> + * __ice_set_vf_mac
> + * @pf: PF to be configure
> * @vf_id: VF identifier
> * @mac: MAC address
> *
> * program VF MAC address
> */
> -int ice_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
> +int __ice_set_vf_mac(struct ice_pf *pf, u16 vf_id, const u8 *mac)
> {
This has a couple of new kdoc warnings:
> * __ice_set_vf_mac
> drivers/net/ethernet/intel/ice/ice_sriov.c:1427: warning: No description found for return value of '__ice_set_vf_mac'
> drivers/net/ethernet/intel/ice/ice_sriov.c:1481: warning: missing initial short description on line:
These aren't the fault of this patch, but merely new due to renaming.
Since these are not fundamentally new issues, I am going to apply this
as-is.
For this alone, I do not think a v12 is necessary. However, if you need
to do a v12 for another reason, I would request that you fix the kdoc
warnings. Otherwise, the patch will fail our initial automated checks.
Thanks,
Jake
> - struct ice_pf *pf = ice_netdev_to_pf(netdev);
> + struct device *dev;
> struct ice_vf *vf;
> int ret;
>
> + dev = ice_pf_to_dev(pf);
> if (is_multicast_ether_addr(mac)) {
> - netdev_err(netdev, "%pM not a valid unicast address\n", mac);
> + dev_err(dev, "%pM not a valid unicast address\n", mac);
> return -EINVAL;
> }
>
> @@ -1459,13 +1460,13 @@ int ice_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
> if (is_zero_ether_addr(mac)) {
> /* VF will send VIRTCHNL_OP_ADD_ETH_ADDR message with its MAC */
> vf->pf_set_mac = false;
> - netdev_info(netdev, "Removing MAC on VF %d. VF driver will be reinitialized\n",
> - vf->vf_id);
> + dev_info(dev, "Removing MAC on VF %d. VF driver will be reinitialized\n",
> + vf->vf_id);
> } else {
> /* PF will add MAC rule for the VF */
> vf->pf_set_mac = true;
> - netdev_info(netdev, "Setting MAC %pM on VF %d. VF driver will be reinitialized\n",
> - mac, vf_id);
> + dev_info(dev, "Setting MAC %pM on VF %d. VF driver will be reinitialized\n",
> + mac, vf_id);
> }
>
> ice_reset_vf(vf, ICE_VF_RESET_NOTIFY);
> @@ -1476,6 +1477,19 @@ int ice_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
> return ret;
> }
>
> +/**
> + * ice_set_vf_mac
> + * @netdev: network interface device structure
> + * @vf_id: VF identifier
> + * @mac: MAC address
> + *
> + * program VF MAC address
> + */
> +int ice_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
> +{
> + return __ice_set_vf_mac(ice_netdev_to_pf(netdev), vf_id, mac);
> +}
> +
> /**
> * ice_set_vf_trust
> * @netdev: network interface device structure
> diff --git a/drivers/net/ethernet/intel/ice/ice_sriov.h b/drivers/net/ethernet/intel/ice/ice_sriov.h
> index 8f22313474d6..96549ca5c52c 100644
> --- a/drivers/net/ethernet/intel/ice/ice_sriov.h
> +++ b/drivers/net/ethernet/intel/ice/ice_sriov.h
> @@ -28,6 +28,7 @@
> #ifdef CONFIG_PCI_IOV
> void ice_process_vflr_event(struct ice_pf *pf);
> int ice_sriov_configure(struct pci_dev *pdev, int num_vfs);
> +int __ice_set_vf_mac(struct ice_pf *pf, u16 vf_id, const u8 *mac);
> int ice_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac);
> int
> ice_get_vf_cfg(struct net_device *netdev, int vf_id, struct ifla_vf_info *ivi);
> @@ -80,6 +81,13 @@ ice_sriov_configure(struct pci_dev __always_unused *pdev,
> return -EOPNOTSUPP;
> }
>
> +static inline int
> +__ice_set_vf_mac(struct ice_pf __always_unused *pf,
> + u16 __always_unused vf_id, const u8 __always_unused *mac)
> +{
> + return -EOPNOTSUPP;
> +}
> +
> static inline int
> ice_set_vf_mac(struct net_device __always_unused *netdev,
> int __always_unused vf_id, u8 __always_unused *mac)
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