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// SPDX-License-Identifier: GPL-2.0-only
/*
* aQuantia Corporation Network Driver
* Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
*/
/* File aq_main.c: Main file for aQuantia Linux driver. */
#include "aq_main.h"
#include "aq_nic.h"
#include "aq_pci_func.h"
#include "aq_ethtool.h"
#include "aq_filters.h"
#include <linux/netdevice.h>
#include <linux/module.h>
MODULE_LICENSE("GPL v2");
MODULE_VERSION(AQ_CFG_DRV_VERSION);
MODULE_AUTHOR(AQ_CFG_DRV_AUTHOR);
MODULE_DESCRIPTION(AQ_CFG_DRV_DESC);
static const char aq_ndev_driver_name[] = AQ_CFG_DRV_NAME;
static const struct net_device_ops aq_ndev_ops;
static struct workqueue_struct *aq_ndev_wq;
void aq_ndev_schedule_work(struct work_struct *work)
{
queue_work(aq_ndev_wq, work);
}
struct net_device *aq_ndev_alloc(void)
{
struct net_device *ndev = NULL;
struct aq_nic_s *aq_nic = NULL;
ndev = alloc_etherdev_mq(sizeof(struct aq_nic_s), AQ_CFG_VECS_MAX);
if (!ndev)
return NULL;
aq_nic = netdev_priv(ndev);
aq_nic->ndev = ndev;
ndev->netdev_ops = &aq_ndev_ops;
ndev->ethtool_ops = &aq_ethtool_ops;
return ndev;
}
static int aq_ndev_open(struct net_device *ndev)
{
int err = 0;
struct aq_nic_s *aq_nic = netdev_priv(ndev);
err = aq_nic_init(aq_nic);
if (err < 0)
goto err_exit;
err = aq_reapply_rxnfc_all_rules(aq_nic);
if (err < 0)
goto err_exit;
err = aq_nic_start(aq_nic);
if (err < 0)
goto err_exit;
err_exit:
if (err < 0)
aq_nic_deinit(aq_nic);
return err;
}
static int aq_ndev_close(struct net_device *ndev)
{
int err = 0;
struct aq_nic_s *aq_nic = netdev_priv(ndev);
err = aq_nic_stop(aq_nic);
if (err < 0)
goto err_exit;
aq_nic_deinit(aq_nic);
err_exit:
return err;
}
static int aq_ndev_start_xmit(struct sk_buff *skb, struct net_device *ndev)
{
struct aq_nic_s *aq_nic = netdev_priv(ndev);
return aq_nic_xmit(aq_nic, skb);
}
static int aq_ndev_change_mtu(struct net_device *ndev, int new_mtu)
{
struct aq_nic_s *aq_nic = netdev_priv(ndev);
int err = aq_nic_set_mtu(aq_nic, new_mtu + ETH_HLEN);
if (err < 0)
goto err_exit;
ndev->mtu = new_mtu;
err_exit:
return err;
}
static int aq_ndev_set_features(struct net_device *ndev,
netdev_features_t features)
{
struct aq_nic_s *aq_nic = netdev_priv(ndev);
struct aq_nic_cfg_s *aq_cfg = aq_nic_get_cfg(aq_nic);
bool is_lro = false;
int err = 0;
if (!(features & NETIF_F_NTUPLE)) {
if (aq_nic->ndev->features & NETIF_F_NTUPLE) {
err = aq_clear_rxnfc_all_rules(aq_nic);
if (unlikely(err))
goto err_exit;
}
}
if (!(features & NETIF_F_HW_VLAN_CTAG_FILTER)) {
if (aq_nic->ndev->features & NETIF_F_HW_VLAN_CTAG_FILTER) {
err = aq_filters_vlan_offload_off(aq_nic);
if (unlikely(err))
goto err_exit;
}
}
aq_cfg->features = features;
if (aq_cfg->aq_hw_caps->hw_features & NETIF_F_LRO) {
is_lro = features & NETIF_F_LRO;
if (aq_cfg->is_lro != is_lro) {
aq_cfg->is_lro = is_lro;
if (netif_running(ndev)) {
aq_ndev_close(ndev);
aq_ndev_open(ndev);
}
}
}
if ((aq_nic->ndev->features ^ features) & NETIF_F_RXCSUM)
err = aq_nic->aq_hw_ops->hw_set_offload(aq_nic->aq_hw,
aq_cfg);
err_exit:
return err;
}
static int aq_ndev_set_mac_address(struct net_device *ndev, void *addr)
{
struct aq_nic_s *aq_nic = netdev_priv(ndev);
int err = 0;
err = eth_mac_addr(ndev, addr);
if (err < 0)
goto err_exit;
err = aq_nic_set_mac(aq_nic, ndev);
if (err < 0)
goto err_exit;
err_exit:
return err;
}
static void aq_ndev_set_multicast_settings(struct net_device *ndev)
{
struct aq_nic_s *aq_nic = netdev_priv(ndev);
aq_nic_set_packet_filter(aq_nic, ndev->flags);
aq_nic_set_multicast_list(aq_nic, ndev);
}
static int aq_ndo_vlan_rx_add_vid(struct net_device *ndev, __be16 proto,
u16 vid)
{
struct aq_nic_s *aq_nic = netdev_priv(ndev);
if (!aq_nic->aq_hw_ops->hw_filter_vlan_set)
return -EOPNOTSUPP;
set_bit(vid, aq_nic->active_vlans);
return aq_filters_vlans_update(aq_nic);
}
static int aq_ndo_vlan_rx_kill_vid(struct net_device *ndev, __be16 proto,
u16 vid)
{
struct aq_nic_s *aq_nic = netdev_priv(ndev);
if (!aq_nic->aq_hw_ops->hw_filter_vlan_set)
return -EOPNOTSUPP;
clear_bit(vid, aq_nic->active_vlans);
if (-ENOENT == aq_del_fvlan_by_vlan(aq_nic, vid))
return aq_filters_vlans_update(aq_nic);
return 0;
}
static const struct net_device_ops aq_ndev_ops = {
.ndo_open = aq_ndev_open,
.ndo_stop = aq_ndev_close,
.ndo_start_xmit = aq_ndev_start_xmit,
.ndo_set_rx_mode = aq_ndev_set_multicast_settings,
.ndo_change_mtu = aq_ndev_change_mtu,
.ndo_set_mac_address = aq_ndev_set_mac_address,
.ndo_set_features = aq_ndev_set_features,
.ndo_vlan_rx_add_vid = aq_ndo_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = aq_ndo_vlan_rx_kill_vid,
};
static int __init aq_ndev_init_module(void)
{
int ret;
aq_ndev_wq = create_singlethread_workqueue(aq_ndev_driver_name);
if (!aq_ndev_wq) {
pr_err("Failed to create workqueue\n");
return -ENOMEM;
}
ret = aq_pci_func_register_driver();
if (ret) {
destroy_workqueue(aq_ndev_wq);
return ret;
}
return 0;
}
static void __exit aq_ndev_exit_module(void)
{
aq_pci_func_unregister_driver();
if (aq_ndev_wq) {
destroy_workqueue(aq_ndev_wq);
aq_ndev_wq = NULL;
}
}
module_init(aq_ndev_init_module);
module_exit(aq_ndev_exit_module);
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