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ice: implement netdev for subfunction

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Configure netdevice for subfunction usecase. Mostly it is reusing ops
from the PF netdevice.

SF netdev is linked to devlink port registered after SF activation.

Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Piotr Raczynski <piotr.raczynski@intel.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This commit is contained in:
Piotr Raczynski
2024-08-20 08:57:52 +02:00
committed by Tony Nguyen
parent 177ef7f1e2
commit 8f9b681adb
1 changed files with 85 additions and 1 deletions
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drivers/net/ethernet/intel/ice/ice_sf_eth.c
+85 -1
View File
@@ -2,11 +2,86 @@
/* Copyright (c) 2024, Intel Corporation. */
#include "ice.h"
#include "ice_lib.h"
#include "ice_txrx.h"
#include "ice_fltr.h"
#include "ice_sf_eth.h"
#include "devlink/devlink_port.h"
#include "devlink/devlink.h"
static const struct net_device_ops ice_sf_netdev_ops = {
.ndo_open = ice_open,
.ndo_stop = ice_stop,
.ndo_start_xmit = ice_start_xmit,
.ndo_vlan_rx_add_vid = ice_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = ice_vlan_rx_kill_vid,
.ndo_change_mtu = ice_change_mtu,
.ndo_get_stats64 = ice_get_stats64,
.ndo_tx_timeout = ice_tx_timeout,
.ndo_bpf = ice_xdp,
.ndo_xdp_xmit = ice_xdp_xmit,
.ndo_xsk_wakeup = ice_xsk_wakeup,
};
/**
* ice_sf_cfg_netdev - Allocate, configure and register a netdev
* @dyn_port: subfunction associated with configured netdev
* @devlink_port: subfunction devlink port to be linked with netdev
*
* Return: 0 on success, negative value on failure
*/
static int ice_sf_cfg_netdev(struct ice_dynamic_port *dyn_port,
struct devlink_port *devlink_port)
{
struct ice_vsi *vsi = dyn_port->vsi;
struct ice_netdev_priv *np;
struct net_device *netdev;
int err;
netdev = alloc_etherdev_mqs(sizeof(*np), vsi->alloc_txq,
vsi->alloc_rxq);
if (!netdev)
return -ENOMEM;
SET_NETDEV_DEV(netdev, &vsi->back->pdev->dev);
set_bit(ICE_VSI_NETDEV_ALLOCD, vsi->state);
vsi->netdev = netdev;
np = netdev_priv(netdev);
np->vsi = vsi;
ice_set_netdev_features(netdev);
netdev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
NETDEV_XDP_ACT_XSK_ZEROCOPY |
NETDEV_XDP_ACT_RX_SG;
netdev->xdp_zc_max_segs = ICE_MAX_BUF_TXD;
eth_hw_addr_set(netdev, dyn_port->hw_addr);
ether_addr_copy(netdev->perm_addr, dyn_port->hw_addr);
netdev->netdev_ops = &ice_sf_netdev_ops;
SET_NETDEV_DEVLINK_PORT(netdev, devlink_port);
err = register_netdev(netdev);
if (err) {
free_netdev(netdev);
vsi->netdev = NULL;
return -ENOMEM;
}
set_bit(ICE_VSI_NETDEV_REGISTERED, vsi->state);
netif_carrier_off(netdev);
netif_tx_stop_all_queues(netdev);
return 0;
}
static void ice_sf_decfg_netdev(struct ice_vsi *vsi)
{
unregister_netdev(vsi->netdev);
clear_bit(ICE_VSI_NETDEV_REGISTERED, vsi->state);
free_netdev(vsi->netdev);
vsi->netdev = NULL;
clear_bit(ICE_VSI_NETDEV_ALLOCD, vsi->state);
}
/**
* ice_sf_dev_probe - subfunction driver probe function
* @adev: pointer to the auxiliary device
@@ -57,10 +132,16 @@ static int ice_sf_dev_probe(struct auxiliary_device *adev,
goto err_vsi_decfg;
}
err = ice_sf_cfg_netdev(dyn_port, &sf_dev->priv->devlink_port);
if (err) {
dev_err(dev, "Subfunction netdev config failed");
goto err_devlink_destroy;
}
err = devl_port_fn_devlink_set(&dyn_port->devlink_port, devlink);
if (err) {
dev_err(dev, "Can't link devlink instance to SF devlink port");
goto err_devlink_destroy;
goto err_netdev_decfg;
}
ice_napi_add(vsi);
@@ -70,6 +151,8 @@ static int ice_sf_dev_probe(struct auxiliary_device *adev,
return 0;
err_netdev_decfg:
ice_sf_decfg_netdev(vsi);
err_devlink_destroy:
ice_devlink_destroy_sf_dev_port(sf_dev);
err_vsi_decfg:
@@ -98,6 +181,7 @@ static void ice_sf_dev_remove(struct auxiliary_device *adev)
ice_vsi_close(vsi);
ice_sf_decfg_netdev(vsi);
ice_devlink_destroy_sf_dev_port(sf_dev);
devl_unregister(devlink);
devl_unlock(devlink);