// SPDX-License-Identifier: GPL-2.0-only /* * Huawei HiNIC PCI Express Linux driver * Copyright(c) 2017 Huawei Technologies Co., Ltd */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "hinic_hw_qp.h" #include "hinic_hw_dev.h" #include "hinic_port.h" #include "hinic_tx.h" #include "hinic_rx.h" #include "hinic_dev.h" MODULE_AUTHOR("Huawei Technologies CO., Ltd"); MODULE_DESCRIPTION("Huawei Intelligent NIC driver"); MODULE_LICENSE("GPL"); static unsigned int tx_weight = 64; module_param(tx_weight, uint, 0644); MODULE_PARM_DESC(tx_weight, "Number Tx packets for NAPI budget (default=64)"); static unsigned int rx_weight = 64; module_param(rx_weight, uint, 0644); MODULE_PARM_DESC(rx_weight, "Number Rx packets for NAPI budget (default=64)"); #define HINIC_DEV_ID_QUAD_PORT_25GE 0x1822 #define HINIC_DEV_ID_DUAL_PORT_100GE 0x0200 #define HINIC_DEV_ID_DUAL_PORT_100GE_MEZZ 0x0205 #define HINIC_DEV_ID_QUAD_PORT_25GE_MEZZ 0x0210 #define HINIC_WQ_NAME "hinic_dev" #define MSG_ENABLE_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | \ NETIF_MSG_IFUP | \ NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR) #define HINIC_LRO_MAX_WQE_NUM_DEFAULT 8 #define HINIC_LRO_RX_TIMER_DEFAULT 16 #define VLAN_BITMAP_SIZE(nic_dev) (ALIGN(VLAN_N_VID, 8) / 8) #define work_to_rx_mode_work(work) \ container_of(work, struct hinic_rx_mode_work, work) #define rx_mode_work_to_nic_dev(rx_mode_work) \ container_of(rx_mode_work, struct hinic_dev, rx_mode_work) static int change_mac_addr(struct net_device *netdev, const u8 *addr); static int set_features(struct hinic_dev *nic_dev, netdev_features_t pre_features, netdev_features_t features, bool force_change); static void update_rx_stats(struct hinic_dev *nic_dev, struct hinic_rxq *rxq) { struct hinic_rxq_stats *nic_rx_stats = &nic_dev->rx_stats; struct hinic_rxq_stats rx_stats; u64_stats_init(&rx_stats.syncp); hinic_rxq_get_stats(rxq, &rx_stats); u64_stats_update_begin(&nic_rx_stats->syncp); nic_rx_stats->bytes += rx_stats.bytes; nic_rx_stats->pkts += rx_stats.pkts; nic_rx_stats->errors += rx_stats.errors; nic_rx_stats->csum_errors += rx_stats.csum_errors; nic_rx_stats->other_errors += rx_stats.other_errors; u64_stats_update_end(&nic_rx_stats->syncp); hinic_rxq_clean_stats(rxq); } static void update_tx_stats(struct hinic_dev *nic_dev, struct hinic_txq *txq) { struct hinic_txq_stats *nic_tx_stats = &nic_dev->tx_stats; struct hinic_txq_stats tx_stats; u64_stats_init(&tx_stats.syncp); hinic_txq_get_stats(txq, &tx_stats); u64_stats_update_begin(&nic_tx_stats->syncp); nic_tx_stats->bytes += tx_stats.bytes; nic_tx_stats->pkts += tx_stats.pkts; nic_tx_stats->tx_busy += tx_stats.tx_busy; nic_tx_stats->tx_wake += tx_stats.tx_wake; nic_tx_stats->tx_dropped += tx_stats.tx_dropped; nic_tx_stats->big_frags_pkts += tx_stats.big_frags_pkts; u64_stats_update_end(&nic_tx_stats->syncp); hinic_txq_clean_stats(txq); } static void update_nic_stats(struct hinic_dev *nic_dev) { int i, num_qps = hinic_hwdev_num_qps(nic_dev->hwdev); for (i = 0; i < num_qps; i++) update_rx_stats(nic_dev, &nic_dev->rxqs[i]); for (i = 0; i < num_qps; i++) update_tx_stats(nic_dev, &nic_dev->txqs[i]); } /** * create_txqs - Create the Logical Tx Queues of specific NIC device * @nic_dev: the specific NIC device * * Return 0 - Success, negative - Failure **/ static int create_txqs(struct hinic_dev *nic_dev) { int err, i, j, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev); struct net_device *netdev = nic_dev->netdev; size_t txq_size; if (nic_dev->txqs) return -EINVAL; txq_size = num_txqs * sizeof(*nic_dev->txqs); nic_dev->txqs = devm_kzalloc(&netdev->dev, txq_size, GFP_KERNEL); if (!nic_dev->txqs) return -ENOMEM; for (i = 0; i < num_txqs; i++) { struct hinic_sq *sq = hinic_hwdev_get_sq(nic_dev->hwdev, i); err = hinic_init_txq(&nic_dev->txqs[i], sq, netdev); if (err) { netif_err(nic_dev, drv, netdev, "Failed to init Txq\n"); goto err_init_txq; } } return 0; err_init_txq: for (j = 0; j < i; j++) hinic_clean_txq(&nic_dev->txqs[j]); devm_kfree(&netdev->dev, nic_dev->txqs); return err; } /** * free_txqs - Free the Logical Tx Queues of specific NIC device * @nic_dev: the specific NIC device **/ static void free_txqs(struct hinic_dev *nic_dev) { int i, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev); struct net_device *netdev = nic_dev->netdev; if (!nic_dev->txqs) return; for (i = 0; i < num_txqs; i++) hinic_clean_txq(&nic_dev->txqs[i]); devm_kfree(&netdev->dev, nic_dev->txqs); nic_dev->txqs = NULL; } /** * create_txqs - Create the Logical Rx Queues of specific NIC device * @nic_dev: the specific NIC device * * Return 0 - Success, negative - Failure **/ static int create_rxqs(struct hinic_dev *nic_dev) { int err, i, j, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev); struct net_device *netdev = nic_dev->netdev; size_t rxq_size; if (nic_dev->rxqs) return -EINVAL; rxq_size = num_rxqs * sizeof(*nic_dev->rxqs); nic_dev->rxqs = devm_kzalloc(&netdev->dev, rxq_size, GFP_KERNEL); if (!nic_dev->rxqs) return -ENOMEM; for (i = 0; i < num_rxqs; i++) { struct hinic_rq *rq = hinic_hwdev_get_rq(nic_dev->hwdev, i); err = hinic_init_rxq(&nic_dev->rxqs[i], rq, netdev); if (err) { netif_err(nic_dev, drv, netdev, "Failed to init rxq\n"); goto err_init_rxq; } } return 0; err_init_rxq: for (j = 0; j < i; j++) hinic_clean_rxq(&nic_dev->rxqs[j]); devm_kfree(&netdev->dev, nic_dev->rxqs); return err; } /** * free_txqs - Free the Logical Rx Queues of specific NIC device * @nic_dev: the specific NIC device **/ static void free_rxqs(struct hinic_dev *nic_dev) { int i, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev); struct net_device *netdev = nic_dev->netdev; if (!nic_dev->rxqs) return; for (i = 0; i < num_rxqs; i++) hinic_clean_rxq(&nic_dev->rxqs[i]); devm_kfree(&netdev->dev, nic_dev->rxqs); nic_dev->rxqs = NULL; } static int hinic_configure_max_qnum(struct hinic_dev *nic_dev) { int err; err = hinic_set_max_qnum(nic_dev, nic_dev->hwdev->nic_cap.max_qps); if (err) return err; return 0; } static int hinic_rss_init(struct hinic_dev *nic_dev) { u8 default_rss_key[HINIC_RSS_KEY_SIZE]; u8 tmpl_idx = nic_dev->rss_tmpl_idx; u32 *indir_tbl; int err, i; indir_tbl = kcalloc(HINIC_RSS_INDIR_SIZE, sizeof(u32), GFP_KERNEL); if (!indir_tbl) return -ENOMEM; netdev_rss_key_fill(default_rss_key, sizeof(default_rss_key)); for (i = 0; i < HINIC_RSS_INDIR_SIZE; i++) indir_tbl[i] = ethtool_rxfh_indir_default(i, nic_dev->num_rss); err = hinic_rss_set_template_tbl(nic_dev, tmpl_idx, default_rss_key); if (err) goto out; err = hinic_rss_set_indir_tbl(nic_dev, tmpl_idx, indir_tbl); if (err) goto out; err = hinic_set_rss_type(nic_dev, tmpl_idx, nic_dev->rss_type); if (err) goto out; err = hinic_rss_set_hash_engine(nic_dev, tmpl_idx, nic_dev->rss_hash_engine); if (err) goto out; err = hinic_rss_cfg(nic_dev, 1, tmpl_idx); if (err) goto out; out: kfree(indir_tbl); return err; } static void hinic_rss_deinit(struct hinic_dev *nic_dev) { hinic_rss_cfg(nic_dev, 0, nic_dev->rss_tmpl_idx); } static void hinic_init_rss_parameters(struct hinic_dev *nic_dev) { nic_dev->rss_hash_engine = HINIC_RSS_HASH_ENGINE_TYPE_XOR; nic_dev->rss_type.tcp_ipv6_ext = 1; nic_dev->rss_type.ipv6_ext = 1; nic_dev->rss_type.tcp_ipv6 = 1; nic_dev->rss_type.ipv6 = 1; nic_dev->rss_type.tcp_ipv4 = 1; nic_dev->rss_type.ipv4 = 1; nic_dev->rss_type.udp_ipv6 = 1; nic_dev->rss_type.udp_ipv4 = 1; } static void hinic_enable_rss(struct hinic_dev *nic_dev) { struct net_device *netdev = nic_dev->netdev; struct hinic_hwdev *hwdev = nic_dev->hwdev; struct hinic_hwif *hwif = hwdev->hwif; struct pci_dev *pdev = hwif->pdev; int i, node, err = 0; u16 num_cpus = 0; nic_dev->max_qps = hinic_hwdev_max_num_qps(hwdev); if (nic_dev->max_qps <= 1) { nic_dev->flags &= ~HINIC_RSS_ENABLE; nic_dev->rss_limit = nic_dev->max_qps; nic_dev->num_qps = nic_dev->max_qps; nic_dev->num_rss = nic_dev->max_qps; return; } err = hinic_rss_template_alloc(nic_dev, &nic_dev->rss_tmpl_idx); if (err) { netif_err(nic_dev, drv, netdev, "Failed to alloc tmpl_idx for rss, can't enable rss for this function\n"); nic_dev->flags &= ~HINIC_RSS_ENABLE; nic_dev->max_qps = 1; nic_dev->rss_limit = nic_dev->max_qps; nic_dev->num_qps = nic_dev->max_qps; nic_dev->num_rss = nic_dev->max_qps; return; } nic_dev->flags |= HINIC_RSS_ENABLE; for (i = 0; i < num_online_cpus(); i++) { node = cpu_to_node(i); if (node == dev_to_node(&pdev->dev)) num_cpus++; } if (!num_cpus) num_cpus = num_online_cpus(); nic_dev->num_qps = hinic_hwdev_num_qps(hwdev); nic_dev->num_qps = min_t(u16, nic_dev->num_qps, num_cpus); nic_dev->rss_limit = nic_dev->num_qps; nic_dev->num_rss = nic_dev->num_qps; hinic_init_rss_parameters(nic_dev); err = hinic_rss_init(nic_dev); if (err) netif_err(nic_dev, drv, netdev, "Failed to init rss\n"); } static int hinic_open(struct net_device *netdev) { struct hinic_dev *nic_dev = netdev_priv(netdev); enum hinic_port_link_state link_state; int err, ret; if (!(nic_dev->flags & HINIC_INTF_UP)) { err = hinic_hwdev_ifup(nic_dev->hwdev); if (err) { netif_err(nic_dev, drv, netdev, "Failed - HW interface up\n"); return err; } } err = create_txqs(nic_dev); if (err) { netif_err(nic_dev, drv, netdev, "Failed to create Tx queues\n"); goto err_create_txqs; } err = create_rxqs(nic_dev); if (err) { netif_err(nic_dev, drv, netdev, "Failed to create Rx queues\n"); goto err_create_rxqs; } hinic_enable_rss(nic_dev); err = hinic_configure_max_qnum(nic_dev); if (err) { netif_err(nic_dev, drv, nic_dev->netdev, "Failed to configure the maximum number of queues\n"); goto err_port_state; } netif_set_real_num_tx_queues(netdev, nic_dev->num_qps); netif_set_real_num_rx_queues(netdev, nic_dev->num_qps); err = hinic_port_set_state(nic_dev, HINIC_PORT_ENABLE); if (err) { netif_err(nic_dev, drv, netdev, "Failed to set port state\n"); goto err_port_state; } err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_ENABLE); if (err) { netif_err(nic_dev, drv, netdev, "Failed to set func port state\n"); goto err_func_port_state; } /* Wait up to 3 sec between port enable to link state */ msleep(3000); down(&nic_dev->mgmt_lock); err = hinic_port_link_state(nic_dev, &link_state); if (err) { netif_err(nic_dev, drv, netdev, "Failed to get link state\n"); goto err_port_link; } if (link_state == HINIC_LINK_STATE_UP) nic_dev->flags |= HINIC_LINK_UP; nic_dev->flags |= HINIC_INTF_UP; if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) == (HINIC_LINK_UP | HINIC_INTF_UP)) { netif_info(nic_dev, drv, netdev, "link + intf UP\n"); netif_carrier_on(netdev); netif_tx_wake_all_queues(netdev); } up(&nic_dev->mgmt_lock); netif_info(nic_dev, drv, netdev, "HINIC_INTF is UP\n"); return 0; err_port_link: up(&nic_dev->mgmt_lock); ret = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE); if (ret) netif_warn(nic_dev, drv, netdev, "Failed to revert func port state\n"); err_func_port_state: ret = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE); if (ret) netif_warn(nic_dev, drv, netdev, "Failed to revert port state\n"); err_port_state: free_rxqs(nic_dev); if (nic_dev->flags & HINIC_RSS_ENABLE) { hinic_rss_deinit(nic_dev); hinic_rss_template_free(nic_dev, nic_dev->rss_tmpl_idx); } err_create_rxqs: free_txqs(nic_dev); err_create_txqs: if (!(nic_dev->flags & HINIC_INTF_UP)) hinic_hwdev_ifdown(nic_dev->hwdev); return err; } static int hinic_close(struct net_device *netdev) { struct hinic_dev *nic_dev = netdev_priv(netdev); unsigned int flags; int err; down(&nic_dev->mgmt_lock); flags = nic_dev->flags; nic_dev->flags &= ~HINIC_INTF_UP; netif_carrier_off(netdev); netif_tx_disable(netdev); update_nic_stats(nic_dev); up(&nic_dev->mgmt_lock); err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE); if (err) { netif_err(nic_dev, drv, netdev, "Failed to set func port state\n"); nic_dev->flags |= (flags & HINIC_INTF_UP); return err; } err = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE); if (err) { netif_err(nic_dev, drv, netdev, "Failed to set port state\n"); nic_dev->flags |= (flags & HINIC_INTF_UP); return err; } if (nic_dev->flags & HINIC_RSS_ENABLE) { hinic_rss_deinit(nic_dev); hinic_rss_template_free(nic_dev, nic_dev->rss_tmpl_idx); } free_rxqs(nic_dev); free_txqs(nic_dev); if (flags & HINIC_INTF_UP) hinic_hwdev_ifdown(nic_dev->hwdev); netif_info(nic_dev, drv, netdev, "HINIC_INTF is DOWN\n"); return 0; } static int hinic_change_mtu(struct net_device *netdev, int new_mtu) { struct hinic_dev *nic_dev = netdev_priv(netdev); int err; netif_info(nic_dev, drv, netdev, "set_mtu = %d\n", new_mtu); err = hinic_port_set_mtu(nic_dev, new_mtu); if (err) netif_err(nic_dev, drv, netdev, "Failed to set port mtu\n"); else netdev->mtu = new_mtu; return err; } /** * change_mac_addr - change the main mac address of network device * @netdev: network device * @addr: mac address to set * * Return 0 - Success, negative - Failure **/ static int change_mac_addr(struct net_device *netdev, const u8 *addr) { struct hinic_dev *nic_dev = netdev_priv(netdev); u16 vid = 0; int err; if (!is_valid_ether_addr(addr)) return -EADDRNOTAVAIL; netif_info(nic_dev, drv, netdev, "change mac addr = %02x %02x %02x %02x %02x %02x\n", addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); down(&nic_dev->mgmt_lock); do { err = hinic_port_del_mac(nic_dev, netdev->dev_addr, vid); if (err) { netif_err(nic_dev, drv, netdev, "Failed to delete mac\n"); break; } err = hinic_port_add_mac(nic_dev, addr, vid); if (err) { netif_err(nic_dev, drv, netdev, "Failed to add mac\n"); break; } vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1); } while (vid != VLAN_N_VID); up(&nic_dev->mgmt_lock); return err; } static int hinic_set_mac_addr(struct net_device *netdev, void *addr) { unsigned char new_mac[ETH_ALEN]; struct sockaddr *saddr = addr; int err; memcpy(new_mac, saddr->sa_data, ETH_ALEN); err = change_mac_addr(netdev, new_mac); if (!err) memcpy(netdev->dev_addr, new_mac, ETH_ALEN); return err; } /** * add_mac_addr - add mac address to network device * @netdev: network device * @addr: mac address to add * * Return 0 - Success, negative - Failure **/ static int add_mac_addr(struct net_device *netdev, const u8 *addr) { struct hinic_dev *nic_dev = netdev_priv(netdev); u16 vid = 0; int err; netif_info(nic_dev, drv, netdev, "set mac addr = %02x %02x %02x %02x %02x %02x\n", addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); down(&nic_dev->mgmt_lock); do { err = hinic_port_add_mac(nic_dev, addr, vid); if (err) { netif_err(nic_dev, drv, netdev, "Failed to add mac\n"); break; } vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1); } while (vid != VLAN_N_VID); up(&nic_dev->mgmt_lock); return err; } /** * remove_mac_addr - remove mac address from network device * @netdev: network device * @addr: mac address to remove * * Return 0 - Success, negative - Failure **/ static int remove_mac_addr(struct net_device *netdev, const u8 *addr) { struct hinic_dev *nic_dev = netdev_priv(netdev); u16 vid = 0; int err; if (!is_valid_ether_addr(addr)) return -EADDRNOTAVAIL; netif_info(nic_dev, drv, netdev, "remove mac addr = %02x %02x %02x %02x %02x %02x\n", addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); down(&nic_dev->mgmt_lock); do { err = hinic_port_del_mac(nic_dev, addr, vid); if (err) { netif_err(nic_dev, drv, netdev, "Failed to delete mac\n"); break; } vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1); } while (vid != VLAN_N_VID); up(&nic_dev->mgmt_lock); return err; } static int hinic_vlan_rx_add_vid(struct net_device *netdev, __always_unused __be16 proto, u16 vid) { struct hinic_dev *nic_dev = netdev_priv(netdev); int ret, err; netif_info(nic_dev, drv, netdev, "add vid = %d\n", vid); down(&nic_dev->mgmt_lock); err = hinic_port_add_vlan(nic_dev, vid); if (err) { netif_err(nic_dev, drv, netdev, "Failed to add vlan\n"); goto err_vlan_add; } err = hinic_port_add_mac(nic_dev, netdev->dev_addr, vid); if (err) { netif_err(nic_dev, drv, netdev, "Failed to set mac\n"); goto err_add_mac; } bitmap_set(nic_dev->vlan_bitmap, vid, 1); up(&nic_dev->mgmt_lock); return 0; err_add_mac: ret = hinic_port_del_vlan(nic_dev, vid); if (ret) netif_err(nic_dev, drv, netdev, "Failed to revert by removing vlan\n"); err_vlan_add: up(&nic_dev->mgmt_lock); return err; } static int hinic_vlan_rx_kill_vid(struct net_device *netdev, __always_unused __be16 proto, u16 vid) { struct hinic_dev *nic_dev = netdev_priv(netdev); int err; netif_info(nic_dev, drv, netdev, "remove vid = %d\n", vid); down(&nic_dev->mgmt_lock); err = hinic_port_del_vlan(nic_dev, vid); if (err) { netif_err(nic_dev, drv, netdev, "Failed to delete vlan\n"); goto err_del_vlan; } bitmap_clear(nic_dev->vlan_bitmap, vid, 1); up(&nic_dev->mgmt_lock); return 0; err_del_vlan: up(&nic_dev->mgmt_lock); return err; } static void set_rx_mode(struct work_struct *work) { struct hinic_rx_mode_work *rx_mode_work = work_to_rx_mode_work(work); struct hinic_dev *nic_dev = rx_mode_work_to_nic_dev(rx_mode_work); netif_info(nic_dev, drv, nic_dev->netdev, "set rx mode work\n"); hinic_port_set_rx_mode(nic_dev, rx_mode_work->rx_mode); __dev_uc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr); __dev_mc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr); } static void hinic_set_rx_mode(struct net_device *netdev) { struct hinic_dev *nic_dev = netdev_priv(netdev); struct hinic_rx_mode_work *rx_mode_work; u32 rx_mode; rx_mode_work = &nic_dev->rx_mode_work; rx_mode = HINIC_RX_MODE_UC | HINIC_RX_MODE_MC | HINIC_RX_MODE_BC; if (netdev->flags & IFF_PROMISC) rx_mode |= HINIC_RX_MODE_PROMISC; else if (netdev->flags & IFF_ALLMULTI) rx_mode |= HINIC_RX_MODE_MC_ALL; rx_mode_work->rx_mode = rx_mode; queue_work(nic_dev->workq, &rx_mode_work->work); } static void hinic_tx_timeout(struct net_device *netdev, unsigned int txqueue) { struct hinic_dev *nic_dev = netdev_priv(netdev); netif_err(nic_dev, drv, netdev, "Tx timeout\n"); } static void hinic_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats) { struct hinic_dev *nic_dev = netdev_priv(netdev); struct hinic_rxq_stats *nic_rx_stats; struct hinic_txq_stats *nic_tx_stats; nic_rx_stats = &nic_dev->rx_stats; nic_tx_stats = &nic_dev->tx_stats; down(&nic_dev->mgmt_lock); if (nic_dev->flags & HINIC_INTF_UP) update_nic_stats(nic_dev); up(&nic_dev->mgmt_lock); stats->rx_bytes = nic_rx_stats->bytes; stats->rx_packets = nic_rx_stats->pkts; stats->rx_errors = nic_rx_stats->errors; stats->tx_bytes = nic_tx_stats->bytes; stats->tx_packets = nic_tx_stats->pkts; stats->tx_errors = nic_tx_stats->tx_dropped; } static int hinic_set_features(struct net_device *netdev, netdev_features_t features) { struct hinic_dev *nic_dev = netdev_priv(netdev); return set_features(nic_dev, nic_dev->netdev->features, features, false); } static netdev_features_t hinic_fix_features(struct net_device *netdev, netdev_features_t features) { struct hinic_dev *nic_dev = netdev_priv(netdev); /* If Rx checksum is disabled, then LRO should also be disabled */ if (!(features & NETIF_F_RXCSUM)) { netif_info(nic_dev, drv, netdev, "disabling LRO as RXCSUM is off\n"); features &= ~NETIF_F_LRO; } return features; } static const struct net_device_ops hinic_netdev_ops = { .ndo_open = hinic_open, .ndo_stop = hinic_close, .ndo_change_mtu = hinic_change_mtu, .ndo_set_mac_address = hinic_set_mac_addr, .ndo_validate_addr = eth_validate_addr, .ndo_vlan_rx_add_vid = hinic_vlan_rx_add_vid, .ndo_vlan_rx_kill_vid = hinic_vlan_rx_kill_vid, .ndo_set_rx_mode = hinic_set_rx_mode, .ndo_start_xmit = hinic_xmit_frame, .ndo_tx_timeout = hinic_tx_timeout, .ndo_get_stats64 = hinic_get_stats64, .ndo_fix_features = hinic_fix_features, .ndo_set_features = hinic_set_features, }; static void netdev_features_init(struct net_device *netdev) { netdev->hw_features = NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_RXCSUM | NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; netdev->vlan_features = netdev->hw_features; netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER; } /** * link_status_event_handler - link event handler * @handle: nic device for the handler * @buf_in: input buffer * @in_size: input size * @buf_in: output buffer * @out_size: returned output size * * Return 0 - Success, negative - Failure **/ static void link_status_event_handler(void *handle, void *buf_in, u16 in_size, void *buf_out, u16 *out_size) { struct hinic_port_link_status *link_status, *ret_link_status; struct hinic_dev *nic_dev = handle; link_status = buf_in; if (link_status->link == HINIC_LINK_STATE_UP) { down(&nic_dev->mgmt_lock); nic_dev->flags |= HINIC_LINK_UP; if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) == (HINIC_LINK_UP | HINIC_INTF_UP)) { netif_carrier_on(nic_dev->netdev); netif_tx_wake_all_queues(nic_dev->netdev); } up(&nic_dev->mgmt_lock); netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is UP\n"); } else { down(&nic_dev->mgmt_lock); nic_dev->flags &= ~HINIC_LINK_UP; netif_carrier_off(nic_dev->netdev); netif_tx_disable(nic_dev->netdev); up(&nic_dev->mgmt_lock); netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is DOWN\n"); } ret_link_status = buf_out; ret_link_status->status = 0; *out_size = sizeof(*ret_link_status); } static int set_features(struct hinic_dev *nic_dev, netdev_features_t pre_features, netdev_features_t features, bool force_change) { netdev_features_t changed = force_change ? ~0 : pre_features ^ features; u32 csum_en = HINIC_RX_CSUM_OFFLOAD_EN; int err = 0; if (changed & NETIF_F_TSO) err = hinic_port_set_tso(nic_dev, (features & NETIF_F_TSO) ? HINIC_TSO_ENABLE : HINIC_TSO_DISABLE); if (changed & NETIF_F_RXCSUM) err = hinic_set_rx_csum_offload(nic_dev, csum_en); if (changed & NETIF_F_LRO) { err = hinic_set_rx_lro_state(nic_dev, !!(features & NETIF_F_LRO), HINIC_LRO_RX_TIMER_DEFAULT, HINIC_LRO_MAX_WQE_NUM_DEFAULT); } if (changed & NETIF_F_HW_VLAN_CTAG_RX) err = hinic_set_rx_vlan_offload(nic_dev, !!(features & NETIF_F_HW_VLAN_CTAG_RX)); return err; } /** * nic_dev_init - Initialize the NIC device * @pdev: the NIC pci device * * Return 0 - Success, negative - Failure **/ static int nic_dev_init(struct pci_dev *pdev) { struct hinic_rx_mode_work *rx_mode_work; struct hinic_txq_stats *tx_stats; struct hinic_rxq_stats *rx_stats; struct hinic_dev *nic_dev; struct net_device *netdev; struct hinic_hwdev *hwdev; int err, num_qps; hwdev = hinic_init_hwdev(pdev); if (IS_ERR(hwdev)) { dev_err(&pdev->dev, "Failed to initialize HW device\n"); return PTR_ERR(hwdev); } num_qps = hinic_hwdev_num_qps(hwdev); if (num_qps <= 0) { dev_err(&pdev->dev, "Invalid number of QPS\n"); err = -EINVAL; goto err_num_qps; } netdev = alloc_etherdev_mq(sizeof(*nic_dev), num_qps); if (!netdev) { dev_err(&pdev->dev, "Failed to allocate Ethernet device\n"); err = -ENOMEM; goto err_alloc_etherdev; } hinic_set_ethtool_ops(netdev); netdev->netdev_ops = &hinic_netdev_ops; netdev->max_mtu = ETH_MAX_MTU; nic_dev = netdev_priv(netdev); nic_dev->netdev = netdev; nic_dev->hwdev = hwdev; nic_dev->msg_enable = MSG_ENABLE_DEFAULT; nic_dev->flags = 0; nic_dev->txqs = NULL; nic_dev->rxqs = NULL; nic_dev->tx_weight = tx_weight; nic_dev->rx_weight = rx_weight; sema_init(&nic_dev->mgmt_lock, 1); tx_stats = &nic_dev->tx_stats; rx_stats = &nic_dev->rx_stats; u64_stats_init(&tx_stats->syncp); u64_stats_init(&rx_stats->syncp); nic_dev->vlan_bitmap = devm_kzalloc(&pdev->dev, VLAN_BITMAP_SIZE(nic_dev), GFP_KERNEL); if (!nic_dev->vlan_bitmap) { err = -ENOMEM; goto err_vlan_bitmap; } nic_dev->workq = create_singlethread_workqueue(HINIC_WQ_NAME); if (!nic_dev->workq) { err = -ENOMEM; goto err_workq; } pci_set_drvdata(pdev, netdev); err = hinic_port_get_mac(nic_dev, netdev->dev_addr); if (err) dev_warn(&pdev->dev, "Failed to get mac address\n"); err = hinic_port_add_mac(nic_dev, netdev->dev_addr, 0); if (err) { dev_err(&pdev->dev, "Failed to add mac\n"); goto err_add_mac; } err = hinic_port_set_mtu(nic_dev, netdev->mtu); if (err) { dev_err(&pdev->dev, "Failed to set mtu\n"); goto err_set_mtu; } rx_mode_work = &nic_dev->rx_mode_work; INIT_WORK(&rx_mode_work->work, set_rx_mode); netdev_features_init(netdev); netif_carrier_off(netdev); hinic_hwdev_cb_register(nic_dev->hwdev, HINIC_MGMT_MSG_CMD_LINK_STATUS, nic_dev, link_status_event_handler); err = set_features(nic_dev, 0, nic_dev->netdev->features, true); if (err) goto err_set_features; SET_NETDEV_DEV(netdev, &pdev->dev); err = register_netdev(netdev); if (err) { dev_err(&pdev->dev, "Failed to register netdev\n"); goto err_reg_netdev; } return 0; err_reg_netdev: err_set_features: hinic_hwdev_cb_unregister(nic_dev->hwdev, HINIC_MGMT_MSG_CMD_LINK_STATUS); cancel_work_sync(&rx_mode_work->work); err_set_mtu: err_add_mac: pci_set_drvdata(pdev, NULL); destroy_workqueue(nic_dev->workq); err_workq: err_vlan_bitmap: free_netdev(netdev); err_alloc_etherdev: err_num_qps: hinic_free_hwdev(hwdev); return err; } static int hinic_probe(struct pci_dev *pdev, const struct pci_device_id *id) { int err = pci_enable_device(pdev); if (err) { dev_err(&pdev->dev, "Failed to enable PCI device\n"); return err; } err = pci_request_regions(pdev, HINIC_DRV_NAME); if (err) { dev_err(&pdev->dev, "Failed to request PCI regions\n"); goto err_pci_regions; } pci_set_master(pdev); err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); if (err) { dev_warn(&pdev->dev, "Couldn't set 64-bit DMA mask\n"); err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); if (err) { dev_err(&pdev->dev, "Failed to set DMA mask\n"); goto err_dma_mask; } } err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); if (err) { dev_warn(&pdev->dev, "Couldn't set 64-bit consistent DMA mask\n"); err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); if (err) { dev_err(&pdev->dev, "Failed to set consistent DMA mask\n"); goto err_dma_consistent_mask; } } err = nic_dev_init(pdev); if (err) { dev_err(&pdev->dev, "Failed to initialize NIC device\n"); goto err_nic_dev_init; } dev_info(&pdev->dev, "HiNIC driver - probed\n"); return 0; err_nic_dev_init: err_dma_consistent_mask: err_dma_mask: pci_release_regions(pdev); err_pci_regions: pci_disable_device(pdev); return err; } static void hinic_remove(struct pci_dev *pdev) { struct net_device *netdev = pci_get_drvdata(pdev); struct hinic_dev *nic_dev = netdev_priv(netdev); struct hinic_rx_mode_work *rx_mode_work; unregister_netdev(netdev); hinic_hwdev_cb_unregister(nic_dev->hwdev, HINIC_MGMT_MSG_CMD_LINK_STATUS); rx_mode_work = &nic_dev->rx_mode_work; cancel_work_sync(&rx_mode_work->work); pci_set_drvdata(pdev, NULL); destroy_workqueue(nic_dev->workq); hinic_free_hwdev(nic_dev->hwdev); free_netdev(netdev); pci_release_regions(pdev); pci_disable_device(pdev); dev_info(&pdev->dev, "HiNIC driver - removed\n"); } static void hinic_shutdown(struct pci_dev *pdev) { pci_disable_device(pdev); } static const struct pci_device_id hinic_pci_table[] = { { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE), 0}, { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE), 0}, { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE_MEZZ), 0}, { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE_MEZZ), 0}, { 0, 0} }; MODULE_DEVICE_TABLE(pci, hinic_pci_table); static struct pci_driver hinic_driver = { .name = HINIC_DRV_NAME, .id_table = hinic_pci_table, .probe = hinic_probe, .remove = hinic_remove, .shutdown = hinic_shutdown, }; module_pci_driver(hinic_driver);