obj-$(CONFIG_HNS3) += hns3vf/
obj-$(CONFIG_HNS3) += hnae3.o
+
+obj-$(CONFIG_HNS3_ENET) += hns3.o
+hns3-objs = hns3_enet.o hns3_ethtool.o
+
+hns3-$(CONFIG_HNS3_DCB) += hns3_dcbnl.o
const struct pci_device_id *id;
struct hnae3_ae_algo *ae_algo;
struct hnae3_client *client;
- int ret = 0;
+ int ret = 0, lock_acquired;
+
+ /* we can get deadlocked if SRIOV is being enabled in context to probe
+ * and probe gets called again in same context. This can happen when
+ * pci_enable_sriov() is called to create VFs from PF probes context.
+ * Therefore, for simplicity uniformly defering further probing in all
+ * cases where we detect contention.
+ */
+ lock_acquired = mutex_trylock(&hnae3_common_lock);
+ if (!lock_acquired)
+ return -EPROBE_DEFER;
- mutex_lock(&hnae3_common_lock);
list_add_tail(&ae_dev->node, &hnae3_ae_dev_list);
/* Check if there are matched ae_algo */
if (!ae_dev->ops) {
dev_err(&ae_dev->pdev->dev, "ae_dev ops are null\n");
+ ret = -EOPNOTSUPP;
goto out_err;
}
struct hnae3_queue **tqp; /* array base of all TQPs of this instance */
};
-#define HNAE3_SUPPORT_MAC_LOOPBACK 1
-#define HNAE3_SUPPORT_PHY_LOOPBACK 2
-#define HNAE3_SUPPORT_SERDES_LOOPBACK 4
+#define HNAE3_SUPPORT_MAC_LOOPBACK BIT(0)
+#define HNAE3_SUPPORT_PHY_LOOPBACK BIT(1)
+#define HNAE3_SUPPORT_SERDES_LOOPBACK BIT(2)
+#define HNAE3_SUPPORT_VF BIT(3)
struct hnae3_handle {
struct hnae3_client *client;
--- /dev/null
+/*
+ * Copyright (c) 2016-2017 Hisilicon Limited.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include "hnae3.h"
+#include "hns3_enet.h"
+
+static
+int hns3_dcbnl_ieee_getets(struct net_device *ndev, struct ieee_ets *ets)
+{
+ struct hnae3_handle *h = hns3_get_handle(ndev);
+
+ if (h->kinfo.dcb_ops->ieee_getets)
+ return h->kinfo.dcb_ops->ieee_getets(h, ets);
+
+ return -EOPNOTSUPP;
+}
+
+static
+int hns3_dcbnl_ieee_setets(struct net_device *ndev, struct ieee_ets *ets)
+{
+ struct hnae3_handle *h = hns3_get_handle(ndev);
+
+ if (h->kinfo.dcb_ops->ieee_setets)
+ return h->kinfo.dcb_ops->ieee_setets(h, ets);
+
+ return -EOPNOTSUPP;
+}
+
+static
+int hns3_dcbnl_ieee_getpfc(struct net_device *ndev, struct ieee_pfc *pfc)
+{
+ struct hnae3_handle *h = hns3_get_handle(ndev);
+
+ if (h->kinfo.dcb_ops->ieee_getpfc)
+ return h->kinfo.dcb_ops->ieee_getpfc(h, pfc);
+
+ return -EOPNOTSUPP;
+}
+
+static
+int hns3_dcbnl_ieee_setpfc(struct net_device *ndev, struct ieee_pfc *pfc)
+{
+ struct hnae3_handle *h = hns3_get_handle(ndev);
+
+ if (h->kinfo.dcb_ops->ieee_setpfc)
+ return h->kinfo.dcb_ops->ieee_setpfc(h, pfc);
+
+ return -EOPNOTSUPP;
+}
+
+/* DCBX configuration */
+static u8 hns3_dcbnl_getdcbx(struct net_device *ndev)
+{
+ struct hnae3_handle *h = hns3_get_handle(ndev);
+
+ if (h->kinfo.dcb_ops->getdcbx)
+ return h->kinfo.dcb_ops->getdcbx(h);
+
+ return 0;
+}
+
+/* return 0 if successful, otherwise fail */
+static u8 hns3_dcbnl_setdcbx(struct net_device *ndev, u8 mode)
+{
+ struct hnae3_handle *h = hns3_get_handle(ndev);
+
+ if (h->kinfo.dcb_ops->setdcbx)
+ return h->kinfo.dcb_ops->setdcbx(h, mode);
+
+ return 1;
+}
+
+static const struct dcbnl_rtnl_ops hns3_dcbnl_ops = {
+ .ieee_getets = hns3_dcbnl_ieee_getets,
+ .ieee_setets = hns3_dcbnl_ieee_setets,
+ .ieee_getpfc = hns3_dcbnl_ieee_getpfc,
+ .ieee_setpfc = hns3_dcbnl_ieee_setpfc,
+ .getdcbx = hns3_dcbnl_getdcbx,
+ .setdcbx = hns3_dcbnl_setdcbx,
+};
+
+/* hclge_dcbnl_setup - DCBNL setup
+ * @handle: the corresponding vport handle
+ * Set up DCBNL
+ */
+void hns3_dcbnl_setup(struct hnae3_handle *handle)
+{
+ struct net_device *dev = handle->kinfo.netdev;
+
+ if ((!handle->kinfo.dcb_ops) || (handle->flags & HNAE3_SUPPORT_VF))
+ return;
+
+ dev->dcbnl_ops = &hns3_dcbnl_ops;
+}
--- /dev/null
+/*
+ * Copyright (c) 2016~2017 Hisilicon Limited.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/etherdevice.h>
+#include <linux/interrupt.h>
+#include <linux/if_vlan.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/skbuff.h>
+#include <linux/sctp.h>
+#include <linux/vermagic.h>
+#include <net/gre.h>
+#include <net/pkt_cls.h>
+#include <net/vxlan.h>
+
+#include "hnae3.h"
+#include "hns3_enet.h"
+
+static const char hns3_driver_name[] = "hns3";
+const char hns3_driver_version[] = VERMAGIC_STRING;
+static const char hns3_driver_string[] =
+ "Hisilicon Ethernet Network Driver for Hip08 Family";
+static const char hns3_copyright[] = "Copyright (c) 2017 Huawei Corporation.";
+static struct hnae3_client client;
+
+/* hns3_pci_tbl - PCI Device ID Table
+ *
+ * Last entry must be all 0s
+ *
+ * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
+ * Class, Class Mask, private data (not used) }
+ */
+static const struct pci_device_id hns3_pci_tbl[] = {
+ {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_GE), 0},
+ {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE), 0},
+ {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE_RDMA),
+ HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
+ {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE_RDMA_MACSEC),
+ HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
+ {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_50GE_RDMA),
+ HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
+ {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_50GE_RDMA_MACSEC),
+ HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
+ {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_RDMA_MACSEC),
+ HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
+ {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_VF), 0},
+ {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_RDMA_DCB_PFC_VF), 0},
+ /* required last entry */
+ {0, }
+};
+MODULE_DEVICE_TABLE(pci, hns3_pci_tbl);
+
+static irqreturn_t hns3_irq_handle(int irq, void *dev)
+{
+ struct hns3_enet_tqp_vector *tqp_vector = dev;
+
+ napi_schedule(&tqp_vector->napi);
+
+ return IRQ_HANDLED;
+}
+
+static void hns3_nic_uninit_irq(struct hns3_nic_priv *priv)
+{
+ struct hns3_enet_tqp_vector *tqp_vectors;
+ unsigned int i;
+
+ for (i = 0; i < priv->vector_num; i++) {
+ tqp_vectors = &priv->tqp_vector[i];
+
+ if (tqp_vectors->irq_init_flag != HNS3_VECTOR_INITED)
+ continue;
+
+ /* release the irq resource */
+ free_irq(tqp_vectors->vector_irq, tqp_vectors);
+ tqp_vectors->irq_init_flag = HNS3_VECTOR_NOT_INITED;
+ }
+}
+
+static int hns3_nic_init_irq(struct hns3_nic_priv *priv)
+{
+ struct hns3_enet_tqp_vector *tqp_vectors;
+ int txrx_int_idx = 0;
+ int rx_int_idx = 0;
+ int tx_int_idx = 0;
+ unsigned int i;
+ int ret;
+
+ for (i = 0; i < priv->vector_num; i++) {
+ tqp_vectors = &priv->tqp_vector[i];
+
+ if (tqp_vectors->irq_init_flag == HNS3_VECTOR_INITED)
+ continue;
+
+ if (tqp_vectors->tx_group.ring && tqp_vectors->rx_group.ring) {
+ snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1,
+ "%s-%s-%d", priv->netdev->name, "TxRx",
+ txrx_int_idx++);
+ txrx_int_idx++;
+ } else if (tqp_vectors->rx_group.ring) {
+ snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1,
+ "%s-%s-%d", priv->netdev->name, "Rx",
+ rx_int_idx++);
+ } else if (tqp_vectors->tx_group.ring) {
+ snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1,
+ "%s-%s-%d", priv->netdev->name, "Tx",
+ tx_int_idx++);
+ } else {
+ /* Skip this unused q_vector */
+ continue;
+ }
+
+ tqp_vectors->name[HNAE3_INT_NAME_LEN - 1] = '\0';
+
+ ret = request_irq(tqp_vectors->vector_irq, hns3_irq_handle, 0,
+ tqp_vectors->name,
+ tqp_vectors);
+ if (ret) {
+ netdev_err(priv->netdev, "request irq(%d) fail\n",
+ tqp_vectors->vector_irq);
+ return ret;
+ }
+
+ tqp_vectors->irq_init_flag = HNS3_VECTOR_INITED;
+ }
+
+ return 0;
+}
+
+static void hns3_mask_vector_irq(struct hns3_enet_tqp_vector *tqp_vector,
+ u32 mask_en)
+{
+ writel(mask_en, tqp_vector->mask_addr);
+}
+
+static void hns3_vector_enable(struct hns3_enet_tqp_vector *tqp_vector)
+{
+ napi_enable(&tqp_vector->napi);
+
+ /* enable vector */
+ hns3_mask_vector_irq(tqp_vector, 1);
+}
+
+static void hns3_vector_disable(struct hns3_enet_tqp_vector *tqp_vector)
+{
+ /* disable vector */
+ hns3_mask_vector_irq(tqp_vector, 0);
+
+ disable_irq(tqp_vector->vector_irq);
+ napi_disable(&tqp_vector->napi);
+}
+
+static void hns3_set_vector_coalesc_gl(struct hns3_enet_tqp_vector *tqp_vector,
+ u32 gl_value)
+{
+ /* this defines the configuration for GL (Interrupt Gap Limiter)
+ * GL defines inter interrupt gap.
+ * GL and RL(Rate Limiter) are 2 ways to acheive interrupt coalescing
+ */
+ writel(gl_value, tqp_vector->mask_addr + HNS3_VECTOR_GL0_OFFSET);
+ writel(gl_value, tqp_vector->mask_addr + HNS3_VECTOR_GL1_OFFSET);
+ writel(gl_value, tqp_vector->mask_addr + HNS3_VECTOR_GL2_OFFSET);
+}
+
+static void hns3_set_vector_coalesc_rl(struct hns3_enet_tqp_vector *tqp_vector,
+ u32 rl_value)
+{
+ /* this defines the configuration for RL (Interrupt Rate Limiter).
+ * Rl defines rate of interrupts i.e. number of interrupts-per-second
+ * GL and RL(Rate Limiter) are 2 ways to acheive interrupt coalescing
+ */
+ writel(rl_value, tqp_vector->mask_addr + HNS3_VECTOR_RL_OFFSET);
+}
+
+static void hns3_vector_gl_rl_init(struct hns3_enet_tqp_vector *tqp_vector)
+{
+ /* initialize the configuration for interrupt coalescing.
+ * 1. GL (Interrupt Gap Limiter)
+ * 2. RL (Interrupt Rate Limiter)
+ */
+
+ /* Default :enable interrupt coalesce */
+ tqp_vector->rx_group.int_gl = HNS3_INT_GL_50K;
+ tqp_vector->tx_group.int_gl = HNS3_INT_GL_50K;
+ hns3_set_vector_coalesc_gl(tqp_vector, HNS3_INT_GL_50K);
+ /* for now we are disabling Interrupt RL - we
+ * will re-enable later
+ */
+ hns3_set_vector_coalesc_rl(tqp_vector, 0);
+ tqp_vector->rx_group.flow_level = HNS3_FLOW_LOW;
+ tqp_vector->tx_group.flow_level = HNS3_FLOW_LOW;
+}
+
+static int hns3_nic_set_real_num_queue(struct net_device *netdev)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+ struct hnae3_knic_private_info *kinfo = &h->kinfo;
+ unsigned int queue_size = kinfo->rss_size * kinfo->num_tc;
+ int ret;
+
+ ret = netif_set_real_num_tx_queues(netdev, queue_size);
+ if (ret) {
+ netdev_err(netdev,
+ "netif_set_real_num_tx_queues fail, ret=%d!\n",
+ ret);
+ return ret;
+ }
+
+ ret = netif_set_real_num_rx_queues(netdev, queue_size);
+ if (ret) {
+ netdev_err(netdev,
+ "netif_set_real_num_rx_queues fail, ret=%d!\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int hns3_nic_net_up(struct net_device *netdev)
+{
+ struct hns3_nic_priv *priv = netdev_priv(netdev);
+ struct hnae3_handle *h = priv->ae_handle;
+ int i, j;
+ int ret;
+
+ /* get irq resource for all vectors */
+ ret = hns3_nic_init_irq(priv);
+ if (ret) {
+ netdev_err(netdev, "hns init irq failed! ret=%d\n", ret);
+ return ret;
+ }
+
+ /* enable the vectors */
+ for (i = 0; i < priv->vector_num; i++)
+ hns3_vector_enable(&priv->tqp_vector[i]);
+
+ /* start the ae_dev */
+ ret = h->ae_algo->ops->start ? h->ae_algo->ops->start(h) : 0;
+ if (ret)
+ goto out_start_err;
+
+ return 0;
+
+out_start_err:
+ for (j = i - 1; j >= 0; j--)
+ hns3_vector_disable(&priv->tqp_vector[j]);
+
+ hns3_nic_uninit_irq(priv);
+
+ return ret;
+}
+
+static int hns3_nic_net_open(struct net_device *netdev)
+{
+ struct hns3_nic_priv *priv = netdev_priv(netdev);
+ int ret;
+
+ netif_carrier_off(netdev);
+
+ ret = hns3_nic_set_real_num_queue(netdev);
+ if (ret)
+ return ret;
+
+ ret = hns3_nic_net_up(netdev);
+ if (ret) {
+ netdev_err(netdev,
+ "hns net up fail, ret=%d!\n", ret);
+ return ret;
+ }
+
+ priv->last_reset_time = jiffies;
+ return 0;
+}
+
+static void hns3_nic_net_down(struct net_device *netdev)
+{
+ struct hns3_nic_priv *priv = netdev_priv(netdev);
+ const struct hnae3_ae_ops *ops;
+ int i;
+
+ /* stop ae_dev */
+ ops = priv->ae_handle->ae_algo->ops;
+ if (ops->stop)
+ ops->stop(priv->ae_handle);
+
+ /* disable vectors */
+ for (i = 0; i < priv->vector_num; i++)
+ hns3_vector_disable(&priv->tqp_vector[i]);
+
+ /* free irq resources */
+ hns3_nic_uninit_irq(priv);
+}
+
+static int hns3_nic_net_stop(struct net_device *netdev)
+{
+ netif_tx_stop_all_queues(netdev);
+ netif_carrier_off(netdev);
+
+ hns3_nic_net_down(netdev);
+
+ return 0;
+}
+
+static int hns3_nic_uc_sync(struct net_device *netdev,
+ const unsigned char *addr)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+
+ if (h->ae_algo->ops->add_uc_addr)
+ return h->ae_algo->ops->add_uc_addr(h, addr);
+
+ return 0;
+}
+
+static int hns3_nic_uc_unsync(struct net_device *netdev,
+ const unsigned char *addr)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+
+ if (h->ae_algo->ops->rm_uc_addr)
+ return h->ae_algo->ops->rm_uc_addr(h, addr);
+
+ return 0;
+}
+
+static int hns3_nic_mc_sync(struct net_device *netdev,
+ const unsigned char *addr)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+
+ if (h->ae_algo->ops->add_mc_addr)
+ return h->ae_algo->ops->add_mc_addr(h, addr);
+
+ return 0;
+}
+
+static int hns3_nic_mc_unsync(struct net_device *netdev,
+ const unsigned char *addr)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+
+ if (h->ae_algo->ops->rm_mc_addr)
+ return h->ae_algo->ops->rm_mc_addr(h, addr);
+
+ return 0;
+}
+
+static void hns3_nic_set_rx_mode(struct net_device *netdev)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+
+ if (h->ae_algo->ops->set_promisc_mode) {
+ if (netdev->flags & IFF_PROMISC)
+ h->ae_algo->ops->set_promisc_mode(h, 1);
+ else
+ h->ae_algo->ops->set_promisc_mode(h, 0);
+ }
+ if (__dev_uc_sync(netdev, hns3_nic_uc_sync, hns3_nic_uc_unsync))
+ netdev_err(netdev, "sync uc address fail\n");
+ if (netdev->flags & IFF_MULTICAST)
+ if (__dev_mc_sync(netdev, hns3_nic_mc_sync, hns3_nic_mc_unsync))
+ netdev_err(netdev, "sync mc address fail\n");
+}
+
+static int hns3_set_tso(struct sk_buff *skb, u32 *paylen,
+ u16 *mss, u32 *type_cs_vlan_tso)
+{
+ u32 l4_offset, hdr_len;
+ union l3_hdr_info l3;
+ union l4_hdr_info l4;
+ u32 l4_paylen;
+ int ret;
+
+ if (!skb_is_gso(skb))
+ return 0;
+
+ ret = skb_cow_head(skb, 0);
+ if (ret)
+ return ret;
+
+ l3.hdr = skb_network_header(skb);
+ l4.hdr = skb_transport_header(skb);
+
+ /* Software should clear the IPv4's checksum field when tso is
+ * needed.
+ */
+ if (l3.v4->version == 4)
+ l3.v4->check = 0;
+
+ /* tunnel packet.*/
+ if (skb_shinfo(skb)->gso_type & (SKB_GSO_GRE |
+ SKB_GSO_GRE_CSUM |
+ SKB_GSO_UDP_TUNNEL |
+ SKB_GSO_UDP_TUNNEL_CSUM)) {
+ if ((!(skb_shinfo(skb)->gso_type &
+ SKB_GSO_PARTIAL)) &&
+ (skb_shinfo(skb)->gso_type &
+ SKB_GSO_UDP_TUNNEL_CSUM)) {
+ /* Software should clear the udp's checksum
+ * field when tso is needed.
+ */
+ l4.udp->check = 0;
+ }
+ /* reset l3&l4 pointers from outer to inner headers */
+ l3.hdr = skb_inner_network_header(skb);
+ l4.hdr = skb_inner_transport_header(skb);
+
+ /* Software should clear the IPv4's checksum field when
+ * tso is needed.
+ */
+ if (l3.v4->version == 4)
+ l3.v4->check = 0;
+ }
+
+ /* normal or tunnel packet*/
+ l4_offset = l4.hdr - skb->data;
+ hdr_len = (l4.tcp->doff * 4) + l4_offset;
+
+ /* remove payload length from inner pseudo checksum when tso*/
+ l4_paylen = skb->len - l4_offset;
+ csum_replace_by_diff(&l4.tcp->check,
+ (__force __wsum)htonl(l4_paylen));
+
+ /* find the txbd field values */
+ *paylen = skb->len - hdr_len;
+ hnae_set_bit(*type_cs_vlan_tso,
+ HNS3_TXD_TSO_B, 1);
+
+ /* get MSS for TSO */
+ *mss = skb_shinfo(skb)->gso_size;
+
+ return 0;
+}
+
+static int hns3_get_l4_protocol(struct sk_buff *skb, u8 *ol4_proto,
+ u8 *il4_proto)
+{
+ union {
+ struct iphdr *v4;
+ struct ipv6hdr *v6;
+ unsigned char *hdr;
+ } l3;
+ unsigned char *l4_hdr;
+ unsigned char *exthdr;
+ u8 l4_proto_tmp;
+ __be16 frag_off;
+
+ /* find outer header point */
+ l3.hdr = skb_network_header(skb);
+ l4_hdr = skb_inner_transport_header(skb);
+
+ if (skb->protocol == htons(ETH_P_IPV6)) {
+ exthdr = l3.hdr + sizeof(*l3.v6);
+ l4_proto_tmp = l3.v6->nexthdr;
+ if (l4_hdr != exthdr)
+ ipv6_skip_exthdr(skb, exthdr - skb->data,
+ &l4_proto_tmp, &frag_off);
+ } else if (skb->protocol == htons(ETH_P_IP)) {
+ l4_proto_tmp = l3.v4->protocol;
+ } else {
+ return -EINVAL;
+ }
+
+ *ol4_proto = l4_proto_tmp;
+
+ /* tunnel packet */
+ if (!skb->encapsulation) {
+ *il4_proto = 0;
+ return 0;
+ }
+
+ /* find inner header point */
+ l3.hdr = skb_inner_network_header(skb);
+ l4_hdr = skb_inner_transport_header(skb);
+
+ if (l3.v6->version == 6) {
+ exthdr = l3.hdr + sizeof(*l3.v6);
+ l4_proto_tmp = l3.v6->nexthdr;
+ if (l4_hdr != exthdr)
+ ipv6_skip_exthdr(skb, exthdr - skb->data,
+ &l4_proto_tmp, &frag_off);
+ } else if (l3.v4->version == 4) {
+ l4_proto_tmp = l3.v4->protocol;
+ }
+
+ *il4_proto = l4_proto_tmp;
+
+ return 0;
+}
+
+static void hns3_set_l2l3l4_len(struct sk_buff *skb, u8 ol4_proto,
+ u8 il4_proto, u32 *type_cs_vlan_tso,
+ u32 *ol_type_vlan_len_msec)
+{
+ union {
+ struct iphdr *v4;
+ struct ipv6hdr *v6;
+ unsigned char *hdr;
+ } l3;
+ union {
+ struct tcphdr *tcp;
+ struct udphdr *udp;
+ struct gre_base_hdr *gre;
+ unsigned char *hdr;
+ } l4;
+ unsigned char *l2_hdr;
+ u8 l4_proto = ol4_proto;
+ u32 ol2_len;
+ u32 ol3_len;
+ u32 ol4_len;
+ u32 l2_len;
+ u32 l3_len;
+
+ l3.hdr = skb_network_header(skb);
+ l4.hdr = skb_transport_header(skb);
+
+ /* compute L2 header size for normal packet, defined in 2 Bytes */
+ l2_len = l3.hdr - skb->data;
+ hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L2LEN_M,
+ HNS3_TXD_L2LEN_S, l2_len >> 1);
+
+ /* tunnel packet*/
+ if (skb->encapsulation) {
+ /* compute OL2 header size, defined in 2 Bytes */
+ ol2_len = l2_len;
+ hnae_set_field(*ol_type_vlan_len_msec,
+ HNS3_TXD_L2LEN_M,
+ HNS3_TXD_L2LEN_S, ol2_len >> 1);
+
+ /* compute OL3 header size, defined in 4 Bytes */
+ ol3_len = l4.hdr - l3.hdr;
+ hnae_set_field(*ol_type_vlan_len_msec, HNS3_TXD_L3LEN_M,
+ HNS3_TXD_L3LEN_S, ol3_len >> 2);
+
+ /* MAC in UDP, MAC in GRE (0x6558)*/
+ if ((ol4_proto == IPPROTO_UDP) || (ol4_proto == IPPROTO_GRE)) {
+ /* switch MAC header ptr from outer to inner header.*/
+ l2_hdr = skb_inner_mac_header(skb);
+
+ /* compute OL4 header size, defined in 4 Bytes. */
+ ol4_len = l2_hdr - l4.hdr;
+ hnae_set_field(*ol_type_vlan_len_msec, HNS3_TXD_L4LEN_M,
+ HNS3_TXD_L4LEN_S, ol4_len >> 2);
+
+ /* switch IP header ptr from outer to inner header */
+ l3.hdr = skb_inner_network_header(skb);
+
+ /* compute inner l2 header size, defined in 2 Bytes. */
+ l2_len = l3.hdr - l2_hdr;
+ hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L2LEN_M,
+ HNS3_TXD_L2LEN_S, l2_len >> 1);
+ } else {
+ /* skb packet types not supported by hardware,
+ * txbd len fild doesn't be filled.
+ */
+ return;
+ }
+
+ /* switch L4 header pointer from outer to inner */
+ l4.hdr = skb_inner_transport_header(skb);
+
+ l4_proto = il4_proto;
+ }
+
+ /* compute inner(/normal) L3 header size, defined in 4 Bytes */
+ l3_len = l4.hdr - l3.hdr;
+ hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L3LEN_M,
+ HNS3_TXD_L3LEN_S, l3_len >> 2);
+
+ /* compute inner(/normal) L4 header size, defined in 4 Bytes */
+ switch (l4_proto) {
+ case IPPROTO_TCP:
+ hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L4LEN_M,
+ HNS3_TXD_L4LEN_S, l4.tcp->doff);
+ break;
+ case IPPROTO_SCTP:
+ hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L4LEN_M,
+ HNS3_TXD_L4LEN_S, (sizeof(struct sctphdr) >> 2));
+ break;
+ case IPPROTO_UDP:
+ hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L4LEN_M,
+ HNS3_TXD_L4LEN_S, (sizeof(struct udphdr) >> 2));
+ break;
+ default:
+ /* skb packet types not supported by hardware,
+ * txbd len fild doesn't be filled.
+ */
+ return;
+ }
+}
+
+static int hns3_set_l3l4_type_csum(struct sk_buff *skb, u8 ol4_proto,
+ u8 il4_proto, u32 *type_cs_vlan_tso,
+ u32 *ol_type_vlan_len_msec)
+{
+ union {
+ struct iphdr *v4;
+ struct ipv6hdr *v6;
+ unsigned char *hdr;
+ } l3;
+ u32 l4_proto = ol4_proto;
+
+ l3.hdr = skb_network_header(skb);
+
+ /* define OL3 type and tunnel type(OL4).*/
+ if (skb->encapsulation) {
+ /* define outer network header type.*/
+ if (skb->protocol == htons(ETH_P_IP)) {
+ if (skb_is_gso(skb))
+ hnae_set_field(*ol_type_vlan_len_msec,
+ HNS3_TXD_OL3T_M, HNS3_TXD_OL3T_S,
+ HNS3_OL3T_IPV4_CSUM);
+ else
+ hnae_set_field(*ol_type_vlan_len_msec,
+ HNS3_TXD_OL3T_M, HNS3_TXD_OL3T_S,
+ HNS3_OL3T_IPV4_NO_CSUM);
+
+ } else if (skb->protocol == htons(ETH_P_IPV6)) {
+ hnae_set_field(*ol_type_vlan_len_msec, HNS3_TXD_OL3T_M,
+ HNS3_TXD_OL3T_S, HNS3_OL3T_IPV6);
+ }
+
+ /* define tunnel type(OL4).*/
+ switch (l4_proto) {
+ case IPPROTO_UDP:
+ hnae_set_field(*ol_type_vlan_len_msec,
+ HNS3_TXD_TUNTYPE_M,
+ HNS3_TXD_TUNTYPE_S,
+ HNS3_TUN_MAC_IN_UDP);
+ break;
+ case IPPROTO_GRE:
+ hnae_set_field(*ol_type_vlan_len_msec,
+ HNS3_TXD_TUNTYPE_M,
+ HNS3_TXD_TUNTYPE_S,
+ HNS3_TUN_NVGRE);
+ break;
+ default:
+ /* drop the skb tunnel packet if hardware don't support,
+ * because hardware can't calculate csum when TSO.
+ */
+ if (skb_is_gso(skb))
+ return -EDOM;
+
+ /* the stack computes the IP header already,
+ * driver calculate l4 checksum when not TSO.
+ */
+ skb_checksum_help(skb);
+ return 0;
+ }
+
+ l3.hdr = skb_inner_network_header(skb);
+ l4_proto = il4_proto;
+ }
+
+ if (l3.v4->version == 4) {
+ hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L3T_M,
+ HNS3_TXD_L3T_S, HNS3_L3T_IPV4);
+
+ /* the stack computes the IP header already, the only time we
+ * need the hardware to recompute it is in the case of TSO.
+ */
+ if (skb_is_gso(skb))
+ hnae_set_bit(*type_cs_vlan_tso, HNS3_TXD_L3CS_B, 1);
+
+ hnae_set_bit(*type_cs_vlan_tso, HNS3_TXD_L4CS_B, 1);
+ } else if (l3.v6->version == 6) {
+ hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L3T_M,
+ HNS3_TXD_L3T_S, HNS3_L3T_IPV6);
+ hnae_set_bit(*type_cs_vlan_tso, HNS3_TXD_L4CS_B, 1);
+ }
+
+ switch (l4_proto) {
+ case IPPROTO_TCP:
+ hnae_set_field(*type_cs_vlan_tso,
+ HNS3_TXD_L4T_M,
+ HNS3_TXD_L4T_S,
+ HNS3_L4T_TCP);
+ break;
+ case IPPROTO_UDP:
+ hnae_set_field(*type_cs_vlan_tso,
+ HNS3_TXD_L4T_M,
+ HNS3_TXD_L4T_S,
+ HNS3_L4T_UDP);
+ break;
+ case IPPROTO_SCTP:
+ hnae_set_field(*type_cs_vlan_tso,
+ HNS3_TXD_L4T_M,
+ HNS3_TXD_L4T_S,
+ HNS3_L4T_SCTP);
+ break;
+ default:
+ /* drop the skb tunnel packet if hardware don't support,
+ * because hardware can't calculate csum when TSO.
+ */
+ if (skb_is_gso(skb))
+ return -EDOM;
+
+ /* the stack computes the IP header already,
+ * driver calculate l4 checksum when not TSO.
+ */
+ skb_checksum_help(skb);
+ return 0;
+ }
+
+ return 0;
+}
+
+static void hns3_set_txbd_baseinfo(u16 *bdtp_fe_sc_vld_ra_ri, int frag_end)
+{
+ /* Config bd buffer end */
+ hnae_set_field(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_BDTYPE_M,
+ HNS3_TXD_BDTYPE_M, 0);
+ hnae_set_bit(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_FE_B, !!frag_end);
+ hnae_set_bit(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_VLD_B, 1);
+ hnae_set_field(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_SC_M, HNS3_TXD_SC_S, 0);
+}
+
+static int hns3_fill_desc(struct hns3_enet_ring *ring, void *priv,
+ int size, dma_addr_t dma, int frag_end,
+ enum hns_desc_type type)
+{
+ struct hns3_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use];
+ struct hns3_desc *desc = &ring->desc[ring->next_to_use];
+ u32 ol_type_vlan_len_msec = 0;
+ u16 bdtp_fe_sc_vld_ra_ri = 0;
+ u32 type_cs_vlan_tso = 0;
+ struct sk_buff *skb;
+ u32 paylen = 0;
+ u16 mss = 0;
+ __be16 protocol;
+ u8 ol4_proto;
+ u8 il4_proto;
+ int ret;
+
+ /* The txbd's baseinfo of DESC_TYPE_PAGE & DESC_TYPE_SKB */
+ desc_cb->priv = priv;
+ desc_cb->length = size;
+ desc_cb->dma = dma;
+ desc_cb->type = type;
+
+ /* now, fill the descriptor */
+ desc->addr = cpu_to_le64(dma);
+ desc->tx.send_size = cpu_to_le16((u16)size);
+ hns3_set_txbd_baseinfo(&bdtp_fe_sc_vld_ra_ri, frag_end);
+ desc->tx.bdtp_fe_sc_vld_ra_ri = cpu_to_le16(bdtp_fe_sc_vld_ra_ri);
+
+ if (type == DESC_TYPE_SKB) {
+ skb = (struct sk_buff *)priv;
+ paylen = skb->len;
+
+ if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ skb_reset_mac_len(skb);
+ protocol = skb->protocol;
+
+ /* vlan packet*/
+ if (protocol == htons(ETH_P_8021Q)) {
+ protocol = vlan_get_protocol(skb);
+ skb->protocol = protocol;
+ }
+ ret = hns3_get_l4_protocol(skb, &ol4_proto, &il4_proto);
+ if (ret)
+ return ret;
+ hns3_set_l2l3l4_len(skb, ol4_proto, il4_proto,
+ &type_cs_vlan_tso,
+ &ol_type_vlan_len_msec);
+ ret = hns3_set_l3l4_type_csum(skb, ol4_proto, il4_proto,
+ &type_cs_vlan_tso,
+ &ol_type_vlan_len_msec);
+ if (ret)
+ return ret;
+
+ ret = hns3_set_tso(skb, &paylen, &mss,
+ &type_cs_vlan_tso);
+ if (ret)
+ return ret;
+ }
+
+ /* Set txbd */
+ desc->tx.ol_type_vlan_len_msec =
+ cpu_to_le32(ol_type_vlan_len_msec);
+ desc->tx.type_cs_vlan_tso_len =
+ cpu_to_le32(type_cs_vlan_tso);
+ desc->tx.paylen = cpu_to_le32(paylen);
+ desc->tx.mss = cpu_to_le16(mss);
+ }
+
+ /* move ring pointer to next.*/
+ ring_ptr_move_fw(ring, next_to_use);
+
+ return 0;
+}
+
+static int hns3_fill_desc_tso(struct hns3_enet_ring *ring, void *priv,
+ int size, dma_addr_t dma, int frag_end,
+ enum hns_desc_type type)
+{
+ unsigned int frag_buf_num;
+ unsigned int k;
+ int sizeoflast;
+ int ret;
+
+ frag_buf_num = (size + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE;
+ sizeoflast = size % HNS3_MAX_BD_SIZE;
+ sizeoflast = sizeoflast ? sizeoflast : HNS3_MAX_BD_SIZE;
+
+ /* When the frag size is bigger than hardware, split this frag */
+ for (k = 0; k < frag_buf_num; k++) {
+ ret = hns3_fill_desc(ring, priv,
+ (k == frag_buf_num - 1) ?
+ sizeoflast : HNS3_MAX_BD_SIZE,
+ dma + HNS3_MAX_BD_SIZE * k,
+ frag_end && (k == frag_buf_num - 1) ? 1 : 0,
+ (type == DESC_TYPE_SKB && !k) ?
+ DESC_TYPE_SKB : DESC_TYPE_PAGE);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int hns3_nic_maybe_stop_tso(struct sk_buff **out_skb, int *bnum,
+ struct hns3_enet_ring *ring)
+{
+ struct sk_buff *skb = *out_skb;
+ struct skb_frag_struct *frag;
+ int bdnum_for_frag;
+ int frag_num;
+ int buf_num;
+ int size;
+ int i;
+
+ size = skb_headlen(skb);
+ buf_num = (size + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE;
+
+ frag_num = skb_shinfo(skb)->nr_frags;
+ for (i = 0; i < frag_num; i++) {
+ frag = &skb_shinfo(skb)->frags[i];
+ size = skb_frag_size(frag);
+ bdnum_for_frag =
+ (size + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE;
+ if (bdnum_for_frag > HNS3_MAX_BD_PER_FRAG)
+ return -ENOMEM;
+
+ buf_num += bdnum_for_frag;
+ }
+
+ if (buf_num > ring_space(ring))
+ return -EBUSY;
+
+ *bnum = buf_num;
+ return 0;
+}
+
+static int hns3_nic_maybe_stop_tx(struct sk_buff **out_skb, int *bnum,
+ struct hns3_enet_ring *ring)
+{
+ struct sk_buff *skb = *out_skb;
+ int buf_num;
+
+ /* No. of segments (plus a header) */
+ buf_num = skb_shinfo(skb)->nr_frags + 1;
+
+ if (buf_num > ring_space(ring))
+ return -EBUSY;
+
+ *bnum = buf_num;
+
+ return 0;
+}
+
+static void hns_nic_dma_unmap(struct hns3_enet_ring *ring, int next_to_use_orig)
+{
+ struct device *dev = ring_to_dev(ring);
+ unsigned int i;
+
+ for (i = 0; i < ring->desc_num; i++) {
+ /* check if this is where we started */
+ if (ring->next_to_use == next_to_use_orig)
+ break;
+
+ /* unmap the descriptor dma address */
+ if (ring->desc_cb[ring->next_to_use].type == DESC_TYPE_SKB)
+ dma_unmap_single(dev,
+ ring->desc_cb[ring->next_to_use].dma,
+ ring->desc_cb[ring->next_to_use].length,
+ DMA_TO_DEVICE);
+ else
+ dma_unmap_page(dev,
+ ring->desc_cb[ring->next_to_use].dma,
+ ring->desc_cb[ring->next_to_use].length,
+ DMA_TO_DEVICE);
+
+ /* rollback one */
+ ring_ptr_move_bw(ring, next_to_use);
+ }
+}
+
+netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb, struct net_device *netdev)
+{
+ struct hns3_nic_priv *priv = netdev_priv(netdev);
+ struct hns3_nic_ring_data *ring_data =
+ &tx_ring_data(priv, skb->queue_mapping);
+ struct hns3_enet_ring *ring = ring_data->ring;
+ struct device *dev = priv->dev;
+ struct netdev_queue *dev_queue;
+ struct skb_frag_struct *frag;
+ int next_to_use_head;
+ int next_to_use_frag;
+ dma_addr_t dma;
+ int buf_num;
+ int seg_num;
+ int size;
+ int ret;
+ int i;
+
+ /* Prefetch the data used later */
+ prefetch(skb->data);
+
+ switch (priv->ops.maybe_stop_tx(&skb, &buf_num, ring)) {
+ case -EBUSY:
+ u64_stats_update_begin(&ring->syncp);
+ ring->stats.tx_busy++;
+ u64_stats_update_end(&ring->syncp);
+
+ goto out_net_tx_busy;
+ case -ENOMEM:
+ u64_stats_update_begin(&ring->syncp);
+ ring->stats.sw_err_cnt++;
+ u64_stats_update_end(&ring->syncp);
+ netdev_err(netdev, "no memory to xmit!\n");
+
+ goto out_err_tx_ok;
+ default:
+ break;
+ }
+
+ /* No. of segments (plus a header) */
+ seg_num = skb_shinfo(skb)->nr_frags + 1;
+ /* Fill the first part */
+ size = skb_headlen(skb);
+
+ next_to_use_head = ring->next_to_use;
+
+ dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, dma)) {
+ netdev_err(netdev, "TX head DMA map failed\n");
+ ring->stats.sw_err_cnt++;
+ goto out_err_tx_ok;
+ }
+
+ ret = priv->ops.fill_desc(ring, skb, size, dma, seg_num == 1 ? 1 : 0,
+ DESC_TYPE_SKB);
+ if (ret)
+ goto head_dma_map_err;
+
+ next_to_use_frag = ring->next_to_use;
+ /* Fill the fragments */
+ for (i = 1; i < seg_num; i++) {
+ frag = &skb_shinfo(skb)->frags[i - 1];
+ size = skb_frag_size(frag);
+ dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, dma)) {
+ netdev_err(netdev, "TX frag(%d) DMA map failed\n", i);
+ ring->stats.sw_err_cnt++;
+ goto frag_dma_map_err;
+ }
+ ret = priv->ops.fill_desc(ring, skb_frag_page(frag), size, dma,
+ seg_num - 1 == i ? 1 : 0,
+ DESC_TYPE_PAGE);
+
+ if (ret)
+ goto frag_dma_map_err;
+ }
+
+ /* Complete translate all packets */
+ dev_queue = netdev_get_tx_queue(netdev, ring_data->queue_index);
+ netdev_tx_sent_queue(dev_queue, skb->len);
+
+ wmb(); /* Commit all data before submit */
+
+ hnae_queue_xmit(ring->tqp, buf_num);
+
+ return NETDEV_TX_OK;
+
+frag_dma_map_err:
+ hns_nic_dma_unmap(ring, next_to_use_frag);
+
+head_dma_map_err:
+ hns_nic_dma_unmap(ring, next_to_use_head);
+
+out_err_tx_ok:
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+
+out_net_tx_busy:
+ netif_stop_subqueue(netdev, ring_data->queue_index);
+ smp_mb(); /* Commit all data before submit */
+
+ return NETDEV_TX_BUSY;
+}
+
+static int hns3_nic_net_set_mac_address(struct net_device *netdev, void *p)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+ struct sockaddr *mac_addr = p;
+ int ret;
+
+ if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data))
+ return -EADDRNOTAVAIL;
+
+ ret = h->ae_algo->ops->set_mac_addr(h, mac_addr->sa_data);
+ if (ret) {
+ netdev_err(netdev, "set_mac_address fail, ret=%d!\n", ret);
+ return ret;
+ }
+
+ ether_addr_copy(netdev->dev_addr, mac_addr->sa_data);
+
+ return 0;
+}
+
+static int hns3_nic_set_features(struct net_device *netdev,
+ netdev_features_t features)
+{
+ struct hns3_nic_priv *priv = netdev_priv(netdev);
+
+ if (features & (NETIF_F_TSO | NETIF_F_TSO6)) {
+ priv->ops.fill_desc = hns3_fill_desc_tso;
+ priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tso;
+ } else {
+ priv->ops.fill_desc = hns3_fill_desc;
+ priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tx;
+ }
+
+ netdev->features = features;
+ return 0;
+}
+
+static void
+hns3_nic_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats)
+{
+ struct hns3_nic_priv *priv = netdev_priv(netdev);
+ int queue_num = priv->ae_handle->kinfo.num_tqps;
+ struct hns3_enet_ring *ring;
+ unsigned int start;
+ unsigned int idx;
+ u64 tx_bytes = 0;
+ u64 rx_bytes = 0;
+ u64 tx_pkts = 0;
+ u64 rx_pkts = 0;
+
+ for (idx = 0; idx < queue_num; idx++) {
+ /* fetch the tx stats */
+ ring = priv->ring_data[idx].ring;
+ do {
+ start = u64_stats_fetch_begin_irq(&ring->syncp);
+ tx_bytes += ring->stats.tx_bytes;
+ tx_pkts += ring->stats.tx_pkts;
+ } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
+
+ /* fetch the rx stats */
+ ring = priv->ring_data[idx + queue_num].ring;
+ do {
+ start = u64_stats_fetch_begin_irq(&ring->syncp);
+ rx_bytes += ring->stats.rx_bytes;
+ rx_pkts += ring->stats.rx_pkts;
+ } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
+ }
+
+ stats->tx_bytes = tx_bytes;
+ stats->tx_packets = tx_pkts;
+ stats->rx_bytes = rx_bytes;
+ stats->rx_packets = rx_pkts;
+
+ stats->rx_errors = netdev->stats.rx_errors;
+ stats->multicast = netdev->stats.multicast;
+ stats->rx_length_errors = netdev->stats.rx_length_errors;
+ stats->rx_crc_errors = netdev->stats.rx_crc_errors;
+ stats->rx_missed_errors = netdev->stats.rx_missed_errors;
+
+ stats->tx_errors = netdev->stats.tx_errors;
+ stats->rx_dropped = netdev->stats.rx_dropped;
+ stats->tx_dropped = netdev->stats.tx_dropped;
+ stats->collisions = netdev->stats.collisions;
+ stats->rx_over_errors = netdev->stats.rx_over_errors;
+ stats->rx_frame_errors = netdev->stats.rx_frame_errors;
+ stats->rx_fifo_errors = netdev->stats.rx_fifo_errors;
+ stats->tx_aborted_errors = netdev->stats.tx_aborted_errors;
+ stats->tx_carrier_errors = netdev->stats.tx_carrier_errors;
+ stats->tx_fifo_errors = netdev->stats.tx_fifo_errors;
+ stats->tx_heartbeat_errors = netdev->stats.tx_heartbeat_errors;
+ stats->tx_window_errors = netdev->stats.tx_window_errors;
+ stats->rx_compressed = netdev->stats.rx_compressed;
+ stats->tx_compressed = netdev->stats.tx_compressed;
+}
+
+static void hns3_add_tunnel_port(struct net_device *netdev, u16 port,
+ enum hns3_udp_tnl_type type)
+{
+ struct hns3_nic_priv *priv = netdev_priv(netdev);
+ struct hns3_udp_tunnel *udp_tnl = &priv->udp_tnl[type];
+ struct hnae3_handle *h = priv->ae_handle;
+
+ if (udp_tnl->used && udp_tnl->dst_port == port) {
+ udp_tnl->used++;
+ return;
+ }
+
+ if (udp_tnl->used) {
+ netdev_warn(netdev,
+ "UDP tunnel [%d], port [%d] offload\n", type, port);
+ return;
+ }
+
+ udp_tnl->dst_port = port;
+ udp_tnl->used = 1;
+ /* TBD send command to hardware to add port */
+ if (h->ae_algo->ops->add_tunnel_udp)
+ h->ae_algo->ops->add_tunnel_udp(h, port);
+}
+
+static void hns3_del_tunnel_port(struct net_device *netdev, u16 port,
+ enum hns3_udp_tnl_type type)
+{
+ struct hns3_nic_priv *priv = netdev_priv(netdev);
+ struct hns3_udp_tunnel *udp_tnl = &priv->udp_tnl[type];
+ struct hnae3_handle *h = priv->ae_handle;
+
+ if (!udp_tnl->used || udp_tnl->dst_port != port) {
+ netdev_warn(netdev,
+ "Invalid UDP tunnel port %d\n", port);
+ return;
+ }
+
+ udp_tnl->used--;
+ if (udp_tnl->used)
+ return;
+
+ udp_tnl->dst_port = 0;
+ /* TBD send command to hardware to del port */
+ if (h->ae_algo->ops->del_tunnel_udp)
+ h->ae_algo->ops->del_tunnel_udp(h, port);
+}
+
+/* hns3_nic_udp_tunnel_add - Get notifiacetion about UDP tunnel ports
+ * @netdev: This physical ports's netdev
+ * @ti: Tunnel information
+ */
+static void hns3_nic_udp_tunnel_add(struct net_device *netdev,
+ struct udp_tunnel_info *ti)
+{
+ u16 port_n = ntohs(ti->port);
+
+ switch (ti->type) {
+ case UDP_TUNNEL_TYPE_VXLAN:
+ hns3_add_tunnel_port(netdev, port_n, HNS3_UDP_TNL_VXLAN);
+ break;
+ case UDP_TUNNEL_TYPE_GENEVE:
+ hns3_add_tunnel_port(netdev, port_n, HNS3_UDP_TNL_GENEVE);
+ break;
+ default:
+ netdev_err(netdev, "unsupported tunnel type %d\n", ti->type);
+ break;
+ }
+}
+
+static void hns3_nic_udp_tunnel_del(struct net_device *netdev,
+ struct udp_tunnel_info *ti)
+{
+ u16 port_n = ntohs(ti->port);
+
+ switch (ti->type) {
+ case UDP_TUNNEL_TYPE_VXLAN:
+ hns3_del_tunnel_port(netdev, port_n, HNS3_UDP_TNL_VXLAN);
+ break;
+ case UDP_TUNNEL_TYPE_GENEVE:
+ hns3_del_tunnel_port(netdev, port_n, HNS3_UDP_TNL_GENEVE);
+ break;
+ default:
+ break;
+ }
+}
+
+static int hns3_setup_tc(struct net_device *netdev, void *type_data)
+{
+ struct tc_mqprio_qopt_offload *mqprio_qopt = type_data;
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+ struct hnae3_knic_private_info *kinfo = &h->kinfo;
+ u8 *prio_tc = mqprio_qopt->qopt.prio_tc_map;
+ u8 tc = mqprio_qopt->qopt.num_tc;
+ u16 mode = mqprio_qopt->mode;
+ u8 hw = mqprio_qopt->qopt.hw;
+ bool if_running;
+ unsigned int i;
+ int ret;
+
+ if (!((hw == TC_MQPRIO_HW_OFFLOAD_TCS &&
+ mode == TC_MQPRIO_MODE_CHANNEL) || (!hw && tc == 0)))
+ return -EOPNOTSUPP;
+
+ if (tc > HNAE3_MAX_TC)
+ return -EINVAL;
+
+ if (!netdev)
+ return -EINVAL;
+
+ if_running = netif_running(netdev);
+ if (if_running) {
+ hns3_nic_net_stop(netdev);
+ msleep(100);
+ }
+
+ ret = (kinfo->dcb_ops && kinfo->dcb_ops->setup_tc) ?
+ kinfo->dcb_ops->setup_tc(h, tc, prio_tc) : -EOPNOTSUPP;
+ if (ret)
+ goto out;
+
+ if (tc <= 1) {
+ netdev_reset_tc(netdev);
+ } else {
+ ret = netdev_set_num_tc(netdev, tc);
+ if (ret)
+ goto out;
+
+ for (i = 0; i < HNAE3_MAX_TC; i++) {
+ if (!kinfo->tc_info[i].enable)
+ continue;
+
+ netdev_set_tc_queue(netdev,
+ kinfo->tc_info[i].tc,
+ kinfo->tc_info[i].tqp_count,
+ kinfo->tc_info[i].tqp_offset);
+ }
+ }
+
+ ret = hns3_nic_set_real_num_queue(netdev);
+
+out:
+ if (if_running)
+ hns3_nic_net_open(netdev);
+
+ return ret;
+}
+
+static int hns3_nic_setup_tc(struct net_device *dev, enum tc_setup_type type,
+ void *type_data)
+{
+ if (type != TC_SETUP_QDISC_MQPRIO)
+ return -EOPNOTSUPP;
+
+ return hns3_setup_tc(dev, type_data);
+}
+
+static int hns3_vlan_rx_add_vid(struct net_device *netdev,
+ __be16 proto, u16 vid)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+ int ret = -EIO;
+
+ if (h->ae_algo->ops->set_vlan_filter)
+ ret = h->ae_algo->ops->set_vlan_filter(h, proto, vid, false);
+
+ return ret;
+}
+
+static int hns3_vlan_rx_kill_vid(struct net_device *netdev,
+ __be16 proto, u16 vid)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+ int ret = -EIO;
+
+ if (h->ae_algo->ops->set_vlan_filter)
+ ret = h->ae_algo->ops->set_vlan_filter(h, proto, vid, true);
+
+ return ret;
+}
+
+static int hns3_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan,
+ u8 qos, __be16 vlan_proto)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+ int ret = -EIO;
+
+ if (h->ae_algo->ops->set_vf_vlan_filter)
+ ret = h->ae_algo->ops->set_vf_vlan_filter(h, vf, vlan,
+ qos, vlan_proto);
+
+ return ret;
+}
+
+static int hns3_nic_change_mtu(struct net_device *netdev, int new_mtu)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+ bool if_running = netif_running(netdev);
+ int ret;
+
+ if (!h->ae_algo->ops->set_mtu)
+ return -EOPNOTSUPP;
+
+ /* if this was called with netdev up then bring netdevice down */
+ if (if_running) {
+ (void)hns3_nic_net_stop(netdev);
+ msleep(100);
+ }
+
+ ret = h->ae_algo->ops->set_mtu(h, new_mtu);
+ if (ret) {
+ netdev_err(netdev, "failed to change MTU in hardware %d\n",
+ ret);
+ return ret;
+ }
+
+ /* if the netdev was running earlier, bring it up again */
+ if (if_running && hns3_nic_net_open(netdev))
+ ret = -EINVAL;
+
+ return ret;
+}
+
+static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev)
+{
+ struct hns3_nic_priv *priv = netdev_priv(ndev);
+ struct hns3_enet_ring *tx_ring = NULL;
+ int timeout_queue = 0;
+ int hw_head, hw_tail;
+ int i;
+
+ /* Find the stopped queue the same way the stack does */
+ for (i = 0; i < ndev->real_num_tx_queues; i++) {
+ struct netdev_queue *q;
+ unsigned long trans_start;
+
+ q = netdev_get_tx_queue(ndev, i);
+ trans_start = q->trans_start;
+ if (netif_xmit_stopped(q) &&
+ time_after(jiffies,
+ (trans_start + ndev->watchdog_timeo))) {
+ timeout_queue = i;
+ break;
+ }
+ }
+
+ if (i == ndev->num_tx_queues) {
+ netdev_info(ndev,
+ "no netdev TX timeout queue found, timeout count: %llu\n",
+ priv->tx_timeout_count);
+ return false;
+ }
+
+ tx_ring = priv->ring_data[timeout_queue].ring;
+
+ hw_head = readl_relaxed(tx_ring->tqp->io_base +
+ HNS3_RING_TX_RING_HEAD_REG);
+ hw_tail = readl_relaxed(tx_ring->tqp->io_base +
+ HNS3_RING_TX_RING_TAIL_REG);
+ netdev_info(ndev,
+ "tx_timeout count: %llu, queue id: %d, SW_NTU: 0x%x, SW_NTC: 0x%x, HW_HEAD: 0x%x, HW_TAIL: 0x%x, INT: 0x%x\n",
+ priv->tx_timeout_count,
+ timeout_queue,
+ tx_ring->next_to_use,
+ tx_ring->next_to_clean,
+ hw_head,
+ hw_tail,
+ readl(tx_ring->tqp_vector->mask_addr));
+
+ return true;
+}
+
+static void hns3_nic_net_timeout(struct net_device *ndev)
+{
+ struct hns3_nic_priv *priv = netdev_priv(ndev);
+ unsigned long last_reset_time = priv->last_reset_time;
+ struct hnae3_handle *h = priv->ae_handle;
+
+ if (!hns3_get_tx_timeo_queue_info(ndev))
+ return;
+
+ priv->tx_timeout_count++;
+
+ /* This timeout is far away enough from last timeout,
+ * if timeout again,set the reset type to PF reset
+ */
+ if (time_after(jiffies, (last_reset_time + 20 * HZ)))
+ priv->reset_level = HNAE3_FUNC_RESET;
+
+ /* Don't do any new action before the next timeout */
+ else if (time_before(jiffies, (last_reset_time + ndev->watchdog_timeo)))
+ return;
+
+ priv->last_reset_time = jiffies;
+
+ if (h->ae_algo->ops->reset_event)
+ h->ae_algo->ops->reset_event(h, priv->reset_level);
+
+ priv->reset_level++;
+ if (priv->reset_level > HNAE3_GLOBAL_RESET)
+ priv->reset_level = HNAE3_GLOBAL_RESET;
+}
+
+static const struct net_device_ops hns3_nic_netdev_ops = {
+ .ndo_open = hns3_nic_net_open,
+ .ndo_stop = hns3_nic_net_stop,
+ .ndo_start_xmit = hns3_nic_net_xmit,
+ .ndo_tx_timeout = hns3_nic_net_timeout,
+ .ndo_set_mac_address = hns3_nic_net_set_mac_address,
+ .ndo_change_mtu = hns3_nic_change_mtu,
+ .ndo_set_features = hns3_nic_set_features,
+ .ndo_get_stats64 = hns3_nic_get_stats64,
+ .ndo_setup_tc = hns3_nic_setup_tc,
+ .ndo_set_rx_mode = hns3_nic_set_rx_mode,
+ .ndo_udp_tunnel_add = hns3_nic_udp_tunnel_add,
+ .ndo_udp_tunnel_del = hns3_nic_udp_tunnel_del,
+ .ndo_vlan_rx_add_vid = hns3_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = hns3_vlan_rx_kill_vid,
+ .ndo_set_vf_vlan = hns3_ndo_set_vf_vlan,
+};
+
+/* hns3_probe - Device initialization routine
+ * @pdev: PCI device information struct
+ * @ent: entry in hns3_pci_tbl
+ *
+ * hns3_probe initializes a PF identified by a pci_dev structure.
+ * The OS initialization, configuring of the PF private structure,
+ * and a hardware reset occur.
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int hns3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ struct hnae3_ae_dev *ae_dev;
+ int ret;
+
+ ae_dev = devm_kzalloc(&pdev->dev, sizeof(*ae_dev),
+ GFP_KERNEL);
+ if (!ae_dev) {
+ ret = -ENOMEM;
+ return ret;
+ }
+
+ ae_dev->pdev = pdev;
+ ae_dev->flag = ent->driver_data;
+ ae_dev->dev_type = HNAE3_DEV_KNIC;
+ pci_set_drvdata(pdev, ae_dev);
+
+ return hnae3_register_ae_dev(ae_dev);
+}
+
+/* hns3_remove - Device removal routine
+ * @pdev: PCI device information struct
+ */
+static void hns3_remove(struct pci_dev *pdev)
+{
+ struct hnae3_ae_dev *ae_dev = pci_get_drvdata(pdev);
+
+ hnae3_unregister_ae_dev(ae_dev);
+
+ devm_kfree(&pdev->dev, ae_dev);
+
+ pci_set_drvdata(pdev, NULL);
+}
+
+static struct pci_driver hns3_driver = {
+ .name = hns3_driver_name,
+ .id_table = hns3_pci_tbl,
+ .probe = hns3_probe,
+ .remove = hns3_remove,
+};
+
+/* set default feature to hns3 */
+static void hns3_set_default_feature(struct net_device *netdev)
+{
+ netdev->priv_flags |= IFF_UNICAST_FLT;
+
+ netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
+ NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
+ NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
+ NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
+ NETIF_F_GSO_UDP_TUNNEL_CSUM;
+
+ netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
+
+ netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
+
+ netdev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
+ NETIF_F_HW_VLAN_CTAG_FILTER |
+ NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
+ NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
+ NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
+ NETIF_F_GSO_UDP_TUNNEL_CSUM;
+
+ netdev->vlan_features |=
+ NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM |
+ NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO |
+ NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
+ NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
+ NETIF_F_GSO_UDP_TUNNEL_CSUM;
+
+ netdev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
+ NETIF_F_HW_VLAN_CTAG_FILTER |
+ NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
+ NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
+ NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
+ NETIF_F_GSO_UDP_TUNNEL_CSUM;
+}
+
+static int hns3_alloc_buffer(struct hns3_enet_ring *ring,
+ struct hns3_desc_cb *cb)
+{
+ unsigned int order = hnae_page_order(ring);
+ struct page *p;
+
+ p = dev_alloc_pages(order);
+ if (!p)
+ return -ENOMEM;
+
+ cb->priv = p;
+ cb->page_offset = 0;
+ cb->reuse_flag = 0;
+ cb->buf = page_address(p);
+ cb->length = hnae_page_size(ring);
+ cb->type = DESC_TYPE_PAGE;
+
+ return 0;
+}
+
+static void hns3_free_buffer(struct hns3_enet_ring *ring,
+ struct hns3_desc_cb *cb)
+{
+ if (cb->type == DESC_TYPE_SKB)
+ dev_kfree_skb_any((struct sk_buff *)cb->priv);
+ else if (!HNAE3_IS_TX_RING(ring))
+ put_page((struct page *)cb->priv);
+ memset(cb, 0, sizeof(*cb));
+}
+
+static int hns3_map_buffer(struct hns3_enet_ring *ring, struct hns3_desc_cb *cb)
+{
+ cb->dma = dma_map_page(ring_to_dev(ring), cb->priv, 0,
+ cb->length, ring_to_dma_dir(ring));
+
+ if (dma_mapping_error(ring_to_dev(ring), cb->dma))
+ return -EIO;
+
+ return 0;
+}
+
+static void hns3_unmap_buffer(struct hns3_enet_ring *ring,
+ struct hns3_desc_cb *cb)
+{
+ if (cb->type == DESC_TYPE_SKB)
+ dma_unmap_single(ring_to_dev(ring), cb->dma, cb->length,
+ ring_to_dma_dir(ring));
+ else
+ dma_unmap_page(ring_to_dev(ring), cb->dma, cb->length,
+ ring_to_dma_dir(ring));
+}
+
+static void hns3_buffer_detach(struct hns3_enet_ring *ring, int i)
+{
+ hns3_unmap_buffer(ring, &ring->desc_cb[i]);
+ ring->desc[i].addr = 0;
+}
+
+static void hns3_free_buffer_detach(struct hns3_enet_ring *ring, int i)
+{
+ struct hns3_desc_cb *cb = &ring->desc_cb[i];
+
+ if (!ring->desc_cb[i].dma)
+ return;
+
+ hns3_buffer_detach(ring, i);
+ hns3_free_buffer(ring, cb);
+}
+
+static void hns3_free_buffers(struct hns3_enet_ring *ring)
+{
+ int i;
+
+ for (i = 0; i < ring->desc_num; i++)
+ hns3_free_buffer_detach(ring, i);
+}
+
+/* free desc along with its attached buffer */
+static void hns3_free_desc(struct hns3_enet_ring *ring)
+{
+ hns3_free_buffers(ring);
+
+ dma_unmap_single(ring_to_dev(ring), ring->desc_dma_addr,
+ ring->desc_num * sizeof(ring->desc[0]),
+ DMA_BIDIRECTIONAL);
+ ring->desc_dma_addr = 0;
+ kfree(ring->desc);
+ ring->desc = NULL;
+}
+
+static int hns3_alloc_desc(struct hns3_enet_ring *ring)
+{
+ int size = ring->desc_num * sizeof(ring->desc[0]);
+
+ ring->desc = kzalloc(size, GFP_KERNEL);
+ if (!ring->desc)
+ return -ENOMEM;
+
+ ring->desc_dma_addr = dma_map_single(ring_to_dev(ring), ring->desc,
+ size, DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(ring_to_dev(ring), ring->desc_dma_addr)) {
+ ring->desc_dma_addr = 0;
+ kfree(ring->desc);
+ ring->desc = NULL;
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static int hns3_reserve_buffer_map(struct hns3_enet_ring *ring,
+ struct hns3_desc_cb *cb)
+{
+ int ret;
+
+ ret = hns3_alloc_buffer(ring, cb);
+ if (ret)
+ goto out;
+
+ ret = hns3_map_buffer(ring, cb);
+ if (ret)
+ goto out_with_buf;
+
+ return 0;
+
+out_with_buf:
+ hns3_free_buffer(ring, cb);
+out:
+ return ret;
+}
+
+static int hns3_alloc_buffer_attach(struct hns3_enet_ring *ring, int i)
+{
+ int ret = hns3_reserve_buffer_map(ring, &ring->desc_cb[i]);
+
+ if (ret)
+ return ret;
+
+ ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma);
+
+ return 0;
+}
+
+/* Allocate memory for raw pkg, and map with dma */
+static int hns3_alloc_ring_buffers(struct hns3_enet_ring *ring)
+{
+ int i, j, ret;
+
+ for (i = 0; i < ring->desc_num; i++) {
+ ret = hns3_alloc_buffer_attach(ring, i);
+ if (ret)
+ goto out_buffer_fail;
+ }
+
+ return 0;
+
+out_buffer_fail:
+ for (j = i - 1; j >= 0; j--)
+ hns3_free_buffer_detach(ring, j);
+ return ret;
+}
+
+/* detach a in-used buffer and replace with a reserved one */
+static void hns3_replace_buffer(struct hns3_enet_ring *ring, int i,
+ struct hns3_desc_cb *res_cb)
+{
+ hns3_unmap_buffer(ring, &ring->desc_cb[i]);
+ ring->desc_cb[i] = *res_cb;
+ ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma);
+}
+
+static void hns3_reuse_buffer(struct hns3_enet_ring *ring, int i)
+{
+ ring->desc_cb[i].reuse_flag = 0;
+ ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma
+ + ring->desc_cb[i].page_offset);
+}
+
+static void hns3_nic_reclaim_one_desc(struct hns3_enet_ring *ring, int *bytes,
+ int *pkts)
+{
+ struct hns3_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean];
+
+ (*pkts) += (desc_cb->type == DESC_TYPE_SKB);
+ (*bytes) += desc_cb->length;
+ /* desc_cb will be cleaned, after hnae_free_buffer_detach*/
+ hns3_free_buffer_detach(ring, ring->next_to_clean);
+
+ ring_ptr_move_fw(ring, next_to_clean);
+}
+
+static int is_valid_clean_head(struct hns3_enet_ring *ring, int h)
+{
+ int u = ring->next_to_use;
+ int c = ring->next_to_clean;
+
+ if (unlikely(h > ring->desc_num))
+ return 0;
+
+ return u > c ? (h > c && h <= u) : (h > c || h <= u);
+}
+
+bool hns3_clean_tx_ring(struct hns3_enet_ring *ring, int budget)
+{
+ struct net_device *netdev = ring->tqp->handle->kinfo.netdev;
+ struct netdev_queue *dev_queue;
+ int bytes, pkts;
+ int head;
+
+ head = readl_relaxed(ring->tqp->io_base + HNS3_RING_TX_RING_HEAD_REG);
+ rmb(); /* Make sure head is ready before touch any data */
+
+ if (is_ring_empty(ring) || head == ring->next_to_clean)
+ return true; /* no data to poll */
+
+ if (!is_valid_clean_head(ring, head)) {
+ netdev_err(netdev, "wrong head (%d, %d-%d)\n", head,
+ ring->next_to_use, ring->next_to_clean);
+
+ u64_stats_update_begin(&ring->syncp);
+ ring->stats.io_err_cnt++;
+ u64_stats_update_end(&ring->syncp);
+ return true;
+ }
+
+ bytes = 0;
+ pkts = 0;
+ while (head != ring->next_to_clean && budget) {
+ hns3_nic_reclaim_one_desc(ring, &bytes, &pkts);
+ /* Issue prefetch for next Tx descriptor */
+ prefetch(&ring->desc_cb[ring->next_to_clean]);
+ budget--;
+ }
+
+ ring->tqp_vector->tx_group.total_bytes += bytes;
+ ring->tqp_vector->tx_group.total_packets += pkts;
+
+ u64_stats_update_begin(&ring->syncp);
+ ring->stats.tx_bytes += bytes;
+ ring->stats.tx_pkts += pkts;
+ u64_stats_update_end(&ring->syncp);
+
+ dev_queue = netdev_get_tx_queue(netdev, ring->tqp->tqp_index);
+ netdev_tx_completed_queue(dev_queue, pkts, bytes);
+
+ if (unlikely(pkts && netif_carrier_ok(netdev) &&
+ (ring_space(ring) > HNS3_MAX_BD_PER_PKT))) {
+ /* Make sure that anybody stopping the queue after this
+ * sees the new next_to_clean.
+ */
+ smp_mb();
+ if (netif_tx_queue_stopped(dev_queue)) {
+ netif_tx_wake_queue(dev_queue);
+ ring->stats.restart_queue++;
+ }
+ }
+
+ return !!budget;
+}
+
+static int hns3_desc_unused(struct hns3_enet_ring *ring)
+{
+ int ntc = ring->next_to_clean;
+ int ntu = ring->next_to_use;
+
+ return ((ntc >= ntu) ? 0 : ring->desc_num) + ntc - ntu;
+}
+
+static void
+hns3_nic_alloc_rx_buffers(struct hns3_enet_ring *ring, int cleand_count)
+{
+ struct hns3_desc_cb *desc_cb;
+ struct hns3_desc_cb res_cbs;
+ int i, ret;
+
+ for (i = 0; i < cleand_count; i++) {
+ desc_cb = &ring->desc_cb[ring->next_to_use];
+ if (desc_cb->reuse_flag) {
+ u64_stats_update_begin(&ring->syncp);
+ ring->stats.reuse_pg_cnt++;
+ u64_stats_update_end(&ring->syncp);
+
+ hns3_reuse_buffer(ring, ring->next_to_use);
+ } else {
+ ret = hns3_reserve_buffer_map(ring, &res_cbs);
+ if (ret) {
+ u64_stats_update_begin(&ring->syncp);
+ ring->stats.sw_err_cnt++;
+ u64_stats_update_end(&ring->syncp);
+
+ netdev_err(ring->tqp->handle->kinfo.netdev,
+ "hnae reserve buffer map failed.\n");
+ break;
+ }
+ hns3_replace_buffer(ring, ring->next_to_use, &res_cbs);
+ }
+
+ ring_ptr_move_fw(ring, next_to_use);
+ }
+
+ wmb(); /* Make all data has been write before submit */
+ writel_relaxed(i, ring->tqp->io_base + HNS3_RING_RX_RING_HEAD_REG);
+}
+
+/* hns3_nic_get_headlen - determine size of header for LRO/GRO
+ * @data: pointer to the start of the headers
+ * @max: total length of section to find headers in
+ *
+ * This function is meant to determine the length of headers that will
+ * be recognized by hardware for LRO, GRO, and RSC offloads. The main
+ * motivation of doing this is to only perform one pull for IPv4 TCP
+ * packets so that we can do basic things like calculating the gso_size
+ * based on the average data per packet.
+ */
+static unsigned int hns3_nic_get_headlen(unsigned char *data, u32 flag,
+ unsigned int max_size)
+{
+ unsigned char *network;
+ u8 hlen;
+
+ /* This should never happen, but better safe than sorry */
+ if (max_size < ETH_HLEN)
+ return max_size;
+
+ /* Initialize network frame pointer */
+ network = data;
+
+ /* Set first protocol and move network header forward */
+ network += ETH_HLEN;
+
+ /* Handle any vlan tag if present */
+ if (hnae_get_field(flag, HNS3_RXD_VLAN_M, HNS3_RXD_VLAN_S)
+ == HNS3_RX_FLAG_VLAN_PRESENT) {
+ if ((typeof(max_size))(network - data) > (max_size - VLAN_HLEN))
+ return max_size;
+
+ network += VLAN_HLEN;
+ }
+
+ /* Handle L3 protocols */
+ if (hnae_get_field(flag, HNS3_RXD_L3ID_M, HNS3_RXD_L3ID_S)
+ == HNS3_RX_FLAG_L3ID_IPV4) {
+ if ((typeof(max_size))(network - data) >
+ (max_size - sizeof(struct iphdr)))
+ return max_size;
+
+ /* Access ihl as a u8 to avoid unaligned access on ia64 */
+ hlen = (network[0] & 0x0F) << 2;
+
+ /* Verify hlen meets minimum size requirements */
+ if (hlen < sizeof(struct iphdr))
+ return network - data;
+
+ /* Record next protocol if header is present */
+ } else if (hnae_get_field(flag, HNS3_RXD_L3ID_M, HNS3_RXD_L3ID_S)
+ == HNS3_RX_FLAG_L3ID_IPV6) {
+ if ((typeof(max_size))(network - data) >
+ (max_size - sizeof(struct ipv6hdr)))
+ return max_size;
+
+ /* Record next protocol */
+ hlen = sizeof(struct ipv6hdr);
+ } else {
+ return network - data;
+ }
+
+ /* Relocate pointer to start of L4 header */
+ network += hlen;
+
+ /* Finally sort out TCP/UDP */
+ if (hnae_get_field(flag, HNS3_RXD_L4ID_M, HNS3_RXD_L4ID_S)
+ == HNS3_RX_FLAG_L4ID_TCP) {
+ if ((typeof(max_size))(network - data) >
+ (max_size - sizeof(struct tcphdr)))
+ return max_size;
+
+ /* Access doff as a u8 to avoid unaligned access on ia64 */
+ hlen = (network[12] & 0xF0) >> 2;
+
+ /* Verify hlen meets minimum size requirements */
+ if (hlen < sizeof(struct tcphdr))
+ return network - data;
+
+ network += hlen;
+ } else if (hnae_get_field(flag, HNS3_RXD_L4ID_M, HNS3_RXD_L4ID_S)
+ == HNS3_RX_FLAG_L4ID_UDP) {
+ if ((typeof(max_size))(network - data) >
+ (max_size - sizeof(struct udphdr)))
+ return max_size;
+
+ network += sizeof(struct udphdr);
+ }
+
+ /* If everything has gone correctly network should be the
+ * data section of the packet and will be the end of the header.
+ * If not then it probably represents the end of the last recognized
+ * header.
+ */
+ if ((typeof(max_size))(network - data) < max_size)
+ return network - data;
+ else
+ return max_size;
+}
+
+static void hns3_nic_reuse_page(struct sk_buff *skb, int i,
+ struct hns3_enet_ring *ring, int pull_len,
+ struct hns3_desc_cb *desc_cb)
+{
+ struct hns3_desc *desc;
+ int truesize, size;
+ int last_offset;
+ bool twobufs;
+
+ twobufs = ((PAGE_SIZE < 8192) &&
+ hnae_buf_size(ring) == HNS3_BUFFER_SIZE_2048);
+
+ desc = &ring->desc[ring->next_to_clean];
+ size = le16_to_cpu(desc->rx.size);
+
+ if (twobufs) {
+ truesize = hnae_buf_size(ring);
+ } else {
+ truesize = ALIGN(size, L1_CACHE_BYTES);
+ last_offset = hnae_page_size(ring) - hnae_buf_size(ring);
+ }
+
+ skb_add_rx_frag(skb, i, desc_cb->priv, desc_cb->page_offset + pull_len,
+ size - pull_len, truesize - pull_len);
+
+ /* Avoid re-using remote pages,flag default unreuse */
+ if (unlikely(page_to_nid(desc_cb->priv) != numa_node_id()))
+ return;
+
+ if (twobufs) {
+ /* If we are only owner of page we can reuse it */
+ if (likely(page_count(desc_cb->priv) == 1)) {
+ /* Flip page offset to other buffer */
+ desc_cb->page_offset ^= truesize;
+
+ desc_cb->reuse_flag = 1;
+ /* bump ref count on page before it is given*/
+ get_page(desc_cb->priv);
+ }
+ return;
+ }
+
+ /* Move offset up to the next cache line */
+ desc_cb->page_offset += truesize;
+
+ if (desc_cb->page_offset <= last_offset) {
+ desc_cb->reuse_flag = 1;
+ /* Bump ref count on page before it is given*/
+ get_page(desc_cb->priv);
+ }
+}
+
+static void hns3_rx_checksum(struct hns3_enet_ring *ring, struct sk_buff *skb,
+ struct hns3_desc *desc)
+{
+ struct net_device *netdev = ring->tqp->handle->kinfo.netdev;
+ int l3_type, l4_type;
+ u32 bd_base_info;
+ int ol4_type;
+ u32 l234info;
+
+ bd_base_info = le32_to_cpu(desc->rx.bd_base_info);
+ l234info = le32_to_cpu(desc->rx.l234_info);
+
+ skb->ip_summed = CHECKSUM_NONE;
+
+ skb_checksum_none_assert(skb);
+
+ if (!(netdev->features & NETIF_F_RXCSUM))
+ return;
+
+ /* check if hardware has done checksum */
+ if (!hnae_get_bit(bd_base_info, HNS3_RXD_L3L4P_B))
+ return;
+
+ if (unlikely(hnae_get_bit(l234info, HNS3_RXD_L3E_B) ||
+ hnae_get_bit(l234info, HNS3_RXD_L4E_B) ||
+ hnae_get_bit(l234info, HNS3_RXD_OL3E_B) ||
+ hnae_get_bit(l234info, HNS3_RXD_OL4E_B))) {
+ netdev_err(netdev, "L3/L4 error pkt\n");
+ u64_stats_update_begin(&ring->syncp);
+ ring->stats.l3l4_csum_err++;
+ u64_stats_update_end(&ring->syncp);
+
+ return;
+ }
+
+ l3_type = hnae_get_field(l234info, HNS3_RXD_L3ID_M,
+ HNS3_RXD_L3ID_S);
+ l4_type = hnae_get_field(l234info, HNS3_RXD_L4ID_M,
+ HNS3_RXD_L4ID_S);
+
+ ol4_type = hnae_get_field(l234info, HNS3_RXD_OL4ID_M, HNS3_RXD_OL4ID_S);
+ switch (ol4_type) {
+ case HNS3_OL4_TYPE_MAC_IN_UDP:
+ case HNS3_OL4_TYPE_NVGRE:
+ skb->csum_level = 1;
+ case HNS3_OL4_TYPE_NO_TUN:
+ /* Can checksum ipv4 or ipv6 + UDP/TCP/SCTP packets */
+ if (l3_type == HNS3_L3_TYPE_IPV4 ||
+ (l3_type == HNS3_L3_TYPE_IPV6 &&
+ (l4_type == HNS3_L4_TYPE_UDP ||
+ l4_type == HNS3_L4_TYPE_TCP ||
+ l4_type == HNS3_L4_TYPE_SCTP)))
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ break;
+ }
+}
+
+static void hns3_rx_skb(struct hns3_enet_ring *ring, struct sk_buff *skb)
+{
+ napi_gro_receive(&ring->tqp_vector->napi, skb);
+}
+
+static int hns3_handle_rx_bd(struct hns3_enet_ring *ring,
+ struct sk_buff **out_skb, int *out_bnum)
+{
+ struct net_device *netdev = ring->tqp->handle->kinfo.netdev;
+ struct hns3_desc_cb *desc_cb;
+ struct hns3_desc *desc;
+ struct sk_buff *skb;
+ unsigned char *va;
+ u32 bd_base_info;
+ int pull_len;
+ u32 l234info;
+ int length;
+ int bnum;
+
+ desc = &ring->desc[ring->next_to_clean];
+ desc_cb = &ring->desc_cb[ring->next_to_clean];
+
+ prefetch(desc);
+
+ length = le16_to_cpu(desc->rx.pkt_len);
+ bd_base_info = le32_to_cpu(desc->rx.bd_base_info);
+ l234info = le32_to_cpu(desc->rx.l234_info);
+
+ /* Check valid BD */
+ if (!hnae_get_bit(bd_base_info, HNS3_RXD_VLD_B))
+ return -EFAULT;
+
+ va = (unsigned char *)desc_cb->buf + desc_cb->page_offset;
+
+ /* Prefetch first cache line of first page
+ * Idea is to cache few bytes of the header of the packet. Our L1 Cache
+ * line size is 64B so need to prefetch twice to make it 128B. But in
+ * actual we can have greater size of caches with 128B Level 1 cache
+ * lines. In such a case, single fetch would suffice to cache in the
+ * relevant part of the header.
+ */
+ prefetch(va);
+#if L1_CACHE_BYTES < 128
+ prefetch(va + L1_CACHE_BYTES);
+#endif
+
+ skb = *out_skb = napi_alloc_skb(&ring->tqp_vector->napi,
+ HNS3_RX_HEAD_SIZE);
+ if (unlikely(!skb)) {
+ netdev_err(netdev, "alloc rx skb fail\n");
+
+ u64_stats_update_begin(&ring->syncp);
+ ring->stats.sw_err_cnt++;
+ u64_stats_update_end(&ring->syncp);
+
+ return -ENOMEM;
+ }
+
+ prefetchw(skb->data);
+
+ bnum = 1;
+ if (length <= HNS3_RX_HEAD_SIZE) {
+ memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long)));
+
+ /* We can reuse buffer as-is, just make sure it is local */
+ if (likely(page_to_nid(desc_cb->priv) == numa_node_id()))
+ desc_cb->reuse_flag = 1;
+ else /* This page cannot be reused so discard it */
+ put_page(desc_cb->priv);
+
+ ring_ptr_move_fw(ring, next_to_clean);
+ } else {
+ u64_stats_update_begin(&ring->syncp);
+ ring->stats.seg_pkt_cnt++;
+ u64_stats_update_end(&ring->syncp);
+
+ pull_len = hns3_nic_get_headlen(va, l234info,
+ HNS3_RX_HEAD_SIZE);
+ memcpy(__skb_put(skb, pull_len), va,
+ ALIGN(pull_len, sizeof(long)));
+
+ hns3_nic_reuse_page(skb, 0, ring, pull_len, desc_cb);
+ ring_ptr_move_fw(ring, next_to_clean);
+
+ while (!hnae_get_bit(bd_base_info, HNS3_RXD_FE_B)) {
+ desc = &ring->desc[ring->next_to_clean];
+ desc_cb = &ring->desc_cb[ring->next_to_clean];
+ bd_base_info = le32_to_cpu(desc->rx.bd_base_info);
+ hns3_nic_reuse_page(skb, bnum, ring, 0, desc_cb);
+ ring_ptr_move_fw(ring, next_to_clean);
+ bnum++;
+ }
+ }
+
+ *out_bnum = bnum;
+
+ if (unlikely(!hnae_get_bit(bd_base_info, HNS3_RXD_VLD_B))) {
+ netdev_err(netdev, "no valid bd,%016llx,%016llx\n",
+ ((u64 *)desc)[0], ((u64 *)desc)[1]);
+ u64_stats_update_begin(&ring->syncp);
+ ring->stats.non_vld_descs++;
+ u64_stats_update_end(&ring->syncp);
+
+ dev_kfree_skb_any(skb);
+ return -EINVAL;
+ }
+
+ if (unlikely((!desc->rx.pkt_len) ||
+ hnae_get_bit(l234info, HNS3_RXD_TRUNCAT_B))) {
+ netdev_err(netdev, "truncated pkt\n");
+ u64_stats_update_begin(&ring->syncp);
+ ring->stats.err_pkt_len++;
+ u64_stats_update_end(&ring->syncp);
+
+ dev_kfree_skb_any(skb);
+ return -EFAULT;
+ }
+
+ if (unlikely(hnae_get_bit(l234info, HNS3_RXD_L2E_B))) {
+ netdev_err(netdev, "L2 error pkt\n");
+ u64_stats_update_begin(&ring->syncp);
+ ring->stats.l2_err++;
+ u64_stats_update_end(&ring->syncp);
+
+ dev_kfree_skb_any(skb);
+ return -EFAULT;
+ }
+
+ u64_stats_update_begin(&ring->syncp);
+ ring->stats.rx_pkts++;
+ ring->stats.rx_bytes += skb->len;
+ u64_stats_update_end(&ring->syncp);
+
+ ring->tqp_vector->rx_group.total_bytes += skb->len;
+
+ hns3_rx_checksum(ring, skb, desc);
+ return 0;
+}
+
+int hns3_clean_rx_ring(
+ struct hns3_enet_ring *ring, int budget,
+ void (*rx_fn)(struct hns3_enet_ring *, struct sk_buff *))
+{
+#define RCB_NOF_ALLOC_RX_BUFF_ONCE 16
+ struct net_device *netdev = ring->tqp->handle->kinfo.netdev;
+ int recv_pkts, recv_bds, clean_count, err;
+ int unused_count = hns3_desc_unused(ring);
+ struct sk_buff *skb = NULL;
+ int num, bnum = 0;
+
+ num = readl_relaxed(ring->tqp->io_base + HNS3_RING_RX_RING_FBDNUM_REG);
+ rmb(); /* Make sure num taken effect before the other data is touched */
+
+ recv_pkts = 0, recv_bds = 0, clean_count = 0;
+ num -= unused_count;
+
+ while (recv_pkts < budget && recv_bds < num) {
+ /* Reuse or realloc buffers */
+ if (clean_count + unused_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) {
+ hns3_nic_alloc_rx_buffers(ring,
+ clean_count + unused_count);
+ clean_count = 0;
+ unused_count = hns3_desc_unused(ring);
+ }
+
+ /* Poll one pkt */
+ err = hns3_handle_rx_bd(ring, &skb, &bnum);
+ if (unlikely(!skb)) /* This fault cannot be repaired */
+ goto out;
+
+ recv_bds += bnum;
+ clean_count += bnum;
+ if (unlikely(err)) { /* Do jump the err */
+ recv_pkts++;
+ continue;
+ }
+
+ /* Do update ip stack process */
+ skb->protocol = eth_type_trans(skb, netdev);
+ rx_fn(ring, skb);
+
+ recv_pkts++;
+ }
+
+out:
+ /* Make all data has been write before submit */
+ if (clean_count + unused_count > 0)
+ hns3_nic_alloc_rx_buffers(ring,
+ clean_count + unused_count);
+
+ return recv_pkts;
+}
+
+static bool hns3_get_new_int_gl(struct hns3_enet_ring_group *ring_group)
+{
+#define HNS3_RX_ULTRA_PACKET_RATE 40000
+ enum hns3_flow_level_range new_flow_level;
+ struct hns3_enet_tqp_vector *tqp_vector;
+ int packets_per_secs;
+ int bytes_per_usecs;
+ u16 new_int_gl;
+ int usecs;
+
+ if (!ring_group->int_gl)
+ return false;
+
+ if (ring_group->total_packets == 0) {
+ ring_group->int_gl = HNS3_INT_GL_50K;
+ ring_group->flow_level = HNS3_FLOW_LOW;
+ return true;
+ }
+
+ /* Simple throttlerate management
+ * 0-10MB/s lower (50000 ints/s)
+ * 10-20MB/s middle (20000 ints/s)
+ * 20-1249MB/s high (18000 ints/s)
+ * > 40000pps ultra (8000 ints/s)
+ */
+ new_flow_level = ring_group->flow_level;
+ new_int_gl = ring_group->int_gl;
+ tqp_vector = ring_group->ring->tqp_vector;
+ usecs = (ring_group->int_gl << 1);
+ bytes_per_usecs = ring_group->total_bytes / usecs;
+ /* 1000000 microseconds */
+ packets_per_secs = ring_group->total_packets * 1000000 / usecs;
+
+ switch (new_flow_level) {
+ case HNS3_FLOW_LOW:
+ if (bytes_per_usecs > 10)
+ new_flow_level = HNS3_FLOW_MID;
+ break;
+ case HNS3_FLOW_MID:
+ if (bytes_per_usecs > 20)
+ new_flow_level = HNS3_FLOW_HIGH;
+ else if (bytes_per_usecs <= 10)
+ new_flow_level = HNS3_FLOW_LOW;
+ break;
+ case HNS3_FLOW_HIGH:
+ case HNS3_FLOW_ULTRA:
+ default:
+ if (bytes_per_usecs <= 20)
+ new_flow_level = HNS3_FLOW_MID;
+ break;
+ }
+
+ if ((packets_per_secs > HNS3_RX_ULTRA_PACKET_RATE) &&
+ (&tqp_vector->rx_group == ring_group))
+ new_flow_level = HNS3_FLOW_ULTRA;
+
+ switch (new_flow_level) {
+ case HNS3_FLOW_LOW:
+ new_int_gl = HNS3_INT_GL_50K;
+ break;
+ case HNS3_FLOW_MID:
+ new_int_gl = HNS3_INT_GL_20K;
+ break;
+ case HNS3_FLOW_HIGH:
+ new_int_gl = HNS3_INT_GL_18K;
+ break;
+ case HNS3_FLOW_ULTRA:
+ new_int_gl = HNS3_INT_GL_8K;
+ break;
+ default:
+ break;
+ }
+
+ ring_group->total_bytes = 0;
+ ring_group->total_packets = 0;
+ ring_group->flow_level = new_flow_level;
+ if (new_int_gl != ring_group->int_gl) {
+ ring_group->int_gl = new_int_gl;
+ return true;
+ }
+ return false;
+}
+
+static void hns3_update_new_int_gl(struct hns3_enet_tqp_vector *tqp_vector)
+{
+ u16 rx_int_gl, tx_int_gl;
+ bool rx, tx;
+
+ rx = hns3_get_new_int_gl(&tqp_vector->rx_group);
+ tx = hns3_get_new_int_gl(&tqp_vector->tx_group);
+ rx_int_gl = tqp_vector->rx_group.int_gl;
+ tx_int_gl = tqp_vector->tx_group.int_gl;
+ if (rx && tx) {
+ if (rx_int_gl > tx_int_gl) {
+ tqp_vector->tx_group.int_gl = rx_int_gl;
+ tqp_vector->tx_group.flow_level =
+ tqp_vector->rx_group.flow_level;
+ hns3_set_vector_coalesc_gl(tqp_vector, rx_int_gl);
+ } else {
+ tqp_vector->rx_group.int_gl = tx_int_gl;
+ tqp_vector->rx_group.flow_level =
+ tqp_vector->tx_group.flow_level;
+ hns3_set_vector_coalesc_gl(tqp_vector, tx_int_gl);
+ }
+ }
+}
+
+static int hns3_nic_common_poll(struct napi_struct *napi, int budget)
+{
+ struct hns3_enet_ring *ring;
+ int rx_pkt_total = 0;
+
+ struct hns3_enet_tqp_vector *tqp_vector =
+ container_of(napi, struct hns3_enet_tqp_vector, napi);
+ bool clean_complete = true;
+ int rx_budget;
+
+ /* Since the actual Tx work is minimal, we can give the Tx a larger
+ * budget and be more aggressive about cleaning up the Tx descriptors.
+ */
+ hns3_for_each_ring(ring, tqp_vector->tx_group) {
+ if (!hns3_clean_tx_ring(ring, budget))
+ clean_complete = false;
+ }
+
+ /* make sure rx ring budget not smaller than 1 */
+ rx_budget = max(budget / tqp_vector->num_tqps, 1);
+
+ hns3_for_each_ring(ring, tqp_vector->rx_group) {
+ int rx_cleaned = hns3_clean_rx_ring(ring, rx_budget,
+ hns3_rx_skb);
+
+ if (rx_cleaned >= rx_budget)
+ clean_complete = false;
+
+ rx_pkt_total += rx_cleaned;
+ }
+
+ tqp_vector->rx_group.total_packets += rx_pkt_total;
+
+ if (!clean_complete)
+ return budget;
+
+ napi_complete(napi);
+ hns3_update_new_int_gl(tqp_vector);
+ hns3_mask_vector_irq(tqp_vector, 1);
+
+ return rx_pkt_total;
+}
+
+static int hns3_get_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector,
+ struct hnae3_ring_chain_node *head)
+{
+ struct pci_dev *pdev = tqp_vector->handle->pdev;
+ struct hnae3_ring_chain_node *cur_chain = head;
+ struct hnae3_ring_chain_node *chain;
+ struct hns3_enet_ring *tx_ring;
+ struct hns3_enet_ring *rx_ring;
+
+ tx_ring = tqp_vector->tx_group.ring;
+ if (tx_ring) {
+ cur_chain->tqp_index = tx_ring->tqp->tqp_index;
+ hnae_set_bit(cur_chain->flag, HNAE3_RING_TYPE_B,
+ HNAE3_RING_TYPE_TX);
+
+ cur_chain->next = NULL;
+
+ while (tx_ring->next) {
+ tx_ring = tx_ring->next;
+
+ chain = devm_kzalloc(&pdev->dev, sizeof(*chain),
+ GFP_KERNEL);
+ if (!chain)
+ return -ENOMEM;
+
+ cur_chain->next = chain;
+ chain->tqp_index = tx_ring->tqp->tqp_index;
+ hnae_set_bit(chain->flag, HNAE3_RING_TYPE_B,
+ HNAE3_RING_TYPE_TX);
+
+ cur_chain = chain;
+ }
+ }
+
+ rx_ring = tqp_vector->rx_group.ring;
+ if (!tx_ring && rx_ring) {
+ cur_chain->next = NULL;
+ cur_chain->tqp_index = rx_ring->tqp->tqp_index;
+ hnae_set_bit(cur_chain->flag, HNAE3_RING_TYPE_B,
+ HNAE3_RING_TYPE_RX);
+
+ rx_ring = rx_ring->next;
+ }
+
+ while (rx_ring) {
+ chain = devm_kzalloc(&pdev->dev, sizeof(*chain), GFP_KERNEL);
+ if (!chain)
+ return -ENOMEM;
+
+ cur_chain->next = chain;
+ chain->tqp_index = rx_ring->tqp->tqp_index;
+ hnae_set_bit(chain->flag, HNAE3_RING_TYPE_B,
+ HNAE3_RING_TYPE_RX);
+ cur_chain = chain;
+
+ rx_ring = rx_ring->next;
+ }
+
+ return 0;
+}
+
+static void hns3_free_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector,
+ struct hnae3_ring_chain_node *head)
+{
+ struct pci_dev *pdev = tqp_vector->handle->pdev;
+ struct hnae3_ring_chain_node *chain_tmp, *chain;
+
+ chain = head->next;
+
+ while (chain) {
+ chain_tmp = chain->next;
+ devm_kfree(&pdev->dev, chain);
+ chain = chain_tmp;
+ }
+}
+
+static void hns3_add_ring_to_group(struct hns3_enet_ring_group *group,
+ struct hns3_enet_ring *ring)
+{
+ ring->next = group->ring;
+ group->ring = ring;
+
+ group->count++;
+}
+
+static int hns3_nic_init_vector_data(struct hns3_nic_priv *priv)
+{
+ struct hnae3_ring_chain_node vector_ring_chain;
+ struct hnae3_handle *h = priv->ae_handle;
+ struct hns3_enet_tqp_vector *tqp_vector;
+ struct hnae3_vector_info *vector;
+ struct pci_dev *pdev = h->pdev;
+ u16 tqp_num = h->kinfo.num_tqps;
+ u16 vector_num;
+ int ret = 0;
+ u16 i;
+
+ /* RSS size, cpu online and vector_num should be the same */
+ /* Should consider 2p/4p later */
+ vector_num = min_t(u16, num_online_cpus(), tqp_num);
+ vector = devm_kcalloc(&pdev->dev, vector_num, sizeof(*vector),
+ GFP_KERNEL);
+ if (!vector)
+ return -ENOMEM;
+
+ vector_num = h->ae_algo->ops->get_vector(h, vector_num, vector);
+
+ priv->vector_num = vector_num;
+ priv->tqp_vector = (struct hns3_enet_tqp_vector *)
+ devm_kcalloc(&pdev->dev, vector_num, sizeof(*priv->tqp_vector),
+ GFP_KERNEL);
+ if (!priv->tqp_vector)
+ return -ENOMEM;
+
+ for (i = 0; i < tqp_num; i++) {
+ u16 vector_i = i % vector_num;
+
+ tqp_vector = &priv->tqp_vector[vector_i];
+
+ hns3_add_ring_to_group(&tqp_vector->tx_group,
+ priv->ring_data[i].ring);
+
+ hns3_add_ring_to_group(&tqp_vector->rx_group,
+ priv->ring_data[i + tqp_num].ring);
+
+ tqp_vector->idx = vector_i;
+ tqp_vector->mask_addr = vector[vector_i].io_addr;
+ tqp_vector->vector_irq = vector[vector_i].vector;
+ tqp_vector->num_tqps++;
+
+ priv->ring_data[i].ring->tqp_vector = tqp_vector;
+ priv->ring_data[i + tqp_num].ring->tqp_vector = tqp_vector;
+ }
+
+ for (i = 0; i < vector_num; i++) {
+ tqp_vector = &priv->tqp_vector[i];
+
+ tqp_vector->rx_group.total_bytes = 0;
+ tqp_vector->rx_group.total_packets = 0;
+ tqp_vector->tx_group.total_bytes = 0;
+ tqp_vector->tx_group.total_packets = 0;
+ hns3_vector_gl_rl_init(tqp_vector);
+ tqp_vector->handle = h;
+
+ ret = hns3_get_vector_ring_chain(tqp_vector,
+ &vector_ring_chain);
+ if (ret)
+ goto out;
+
+ ret = h->ae_algo->ops->map_ring_to_vector(h,
+ tqp_vector->vector_irq, &vector_ring_chain);
+ if (ret)
+ goto out;
+
+ hns3_free_vector_ring_chain(tqp_vector, &vector_ring_chain);
+
+ netif_napi_add(priv->netdev, &tqp_vector->napi,
+ hns3_nic_common_poll, NAPI_POLL_WEIGHT);
+ }
+
+out:
+ devm_kfree(&pdev->dev, vector);
+ return ret;
+}
+
+static int hns3_nic_uninit_vector_data(struct hns3_nic_priv *priv)
+{
+ struct hnae3_ring_chain_node vector_ring_chain;
+ struct hnae3_handle *h = priv->ae_handle;
+ struct hns3_enet_tqp_vector *tqp_vector;
+ struct pci_dev *pdev = h->pdev;
+ int i, ret;
+
+ for (i = 0; i < priv->vector_num; i++) {
+ tqp_vector = &priv->tqp_vector[i];
+
+ ret = hns3_get_vector_ring_chain(tqp_vector,
+ &vector_ring_chain);
+ if (ret)
+ return ret;
+
+ ret = h->ae_algo->ops->unmap_ring_from_vector(h,
+ tqp_vector->vector_irq, &vector_ring_chain);
+ if (ret)
+ return ret;
+
+ hns3_free_vector_ring_chain(tqp_vector, &vector_ring_chain);
+
+ if (priv->tqp_vector[i].irq_init_flag == HNS3_VECTOR_INITED) {
+ (void)irq_set_affinity_hint(
+ priv->tqp_vector[i].vector_irq,
+ NULL);
+ free_irq(priv->tqp_vector[i].vector_irq,
+ &priv->tqp_vector[i]);
+ }
+
+ priv->ring_data[i].ring->irq_init_flag = HNS3_VECTOR_NOT_INITED;
+
+ netif_napi_del(&priv->tqp_vector[i].napi);
+ }
+
+ devm_kfree(&pdev->dev, priv->tqp_vector);
+
+ return 0;
+}
+
+static int hns3_ring_get_cfg(struct hnae3_queue *q, struct hns3_nic_priv *priv,
+ int ring_type)
+{
+ struct hns3_nic_ring_data *ring_data = priv->ring_data;
+ int queue_num = priv->ae_handle->kinfo.num_tqps;
+ struct pci_dev *pdev = priv->ae_handle->pdev;
+ struct hns3_enet_ring *ring;
+
+ ring = devm_kzalloc(&pdev->dev, sizeof(*ring), GFP_KERNEL);
+ if (!ring)
+ return -ENOMEM;
+
+ if (ring_type == HNAE3_RING_TYPE_TX) {
+ ring_data[q->tqp_index].ring = ring;
+ ring_data[q->tqp_index].queue_index = q->tqp_index;
+ ring->io_base = (u8 __iomem *)q->io_base + HNS3_TX_REG_OFFSET;
+ } else {
+ ring_data[q->tqp_index + queue_num].ring = ring;
+ ring_data[q->tqp_index + queue_num].queue_index = q->tqp_index;
+ ring->io_base = q->io_base;
+ }
+
+ hnae_set_bit(ring->flag, HNAE3_RING_TYPE_B, ring_type);
+
+ ring->tqp = q;
+ ring->desc = NULL;
+ ring->desc_cb = NULL;
+ ring->dev = priv->dev;
+ ring->desc_dma_addr = 0;
+ ring->buf_size = q->buf_size;
+ ring->desc_num = q->desc_num;
+ ring->next_to_use = 0;
+ ring->next_to_clean = 0;
+
+ return 0;
+}
+
+static int hns3_queue_to_ring(struct hnae3_queue *tqp,
+ struct hns3_nic_priv *priv)
+{
+ int ret;
+
+ ret = hns3_ring_get_cfg(tqp, priv, HNAE3_RING_TYPE_TX);
+ if (ret)
+ return ret;
+
+ ret = hns3_ring_get_cfg(tqp, priv, HNAE3_RING_TYPE_RX);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int hns3_get_ring_config(struct hns3_nic_priv *priv)
+{
+ struct hnae3_handle *h = priv->ae_handle;
+ struct pci_dev *pdev = h->pdev;
+ int i, ret;
+
+ priv->ring_data = devm_kzalloc(&pdev->dev, h->kinfo.num_tqps *
+ sizeof(*priv->ring_data) * 2,
+ GFP_KERNEL);
+ if (!priv->ring_data)
+ return -ENOMEM;
+
+ for (i = 0; i < h->kinfo.num_tqps; i++) {
+ ret = hns3_queue_to_ring(h->kinfo.tqp[i], priv);
+ if (ret)
+ goto err;
+ }
+
+ return 0;
+err:
+ devm_kfree(&pdev->dev, priv->ring_data);
+ return ret;
+}
+
+static int hns3_alloc_ring_memory(struct hns3_enet_ring *ring)
+{
+ int ret;
+
+ if (ring->desc_num <= 0 || ring->buf_size <= 0)
+ return -EINVAL;
+
+ ring->desc_cb = kcalloc(ring->desc_num, sizeof(ring->desc_cb[0]),
+ GFP_KERNEL);
+ if (!ring->desc_cb) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ ret = hns3_alloc_desc(ring);
+ if (ret)
+ goto out_with_desc_cb;
+
+ if (!HNAE3_IS_TX_RING(ring)) {
+ ret = hns3_alloc_ring_buffers(ring);
+ if (ret)
+ goto out_with_desc;
+ }
+
+ return 0;
+
+out_with_desc:
+ hns3_free_desc(ring);
+out_with_desc_cb:
+ kfree(ring->desc_cb);
+ ring->desc_cb = NULL;
+out:
+ return ret;
+}
+
+static void hns3_fini_ring(struct hns3_enet_ring *ring)
+{
+ hns3_free_desc(ring);
+ kfree(ring->desc_cb);
+ ring->desc_cb = NULL;
+ ring->next_to_clean = 0;
+ ring->next_to_use = 0;
+}
+
+static int hns3_buf_size2type(u32 buf_size)
+{
+ int bd_size_type;
+
+ switch (buf_size) {
+ case 512:
+ bd_size_type = HNS3_BD_SIZE_512_TYPE;
+ break;
+ case 1024:
+ bd_size_type = HNS3_BD_SIZE_1024_TYPE;
+ break;
+ case 2048:
+ bd_size_type = HNS3_BD_SIZE_2048_TYPE;
+ break;
+ case 4096:
+ bd_size_type = HNS3_BD_SIZE_4096_TYPE;
+ break;
+ default:
+ bd_size_type = HNS3_BD_SIZE_2048_TYPE;
+ }
+
+ return bd_size_type;
+}
+
+static void hns3_init_ring_hw(struct hns3_enet_ring *ring)
+{
+ dma_addr_t dma = ring->desc_dma_addr;
+ struct hnae3_queue *q = ring->tqp;
+
+ if (!HNAE3_IS_TX_RING(ring)) {
+ hns3_write_dev(q, HNS3_RING_RX_RING_BASEADDR_L_REG,
+ (u32)dma);
+ hns3_write_dev(q, HNS3_RING_RX_RING_BASEADDR_H_REG,
+ (u32)((dma >> 31) >> 1));
+
+ hns3_write_dev(q, HNS3_RING_RX_RING_BD_LEN_REG,
+ hns3_buf_size2type(ring->buf_size));
+ hns3_write_dev(q, HNS3_RING_RX_RING_BD_NUM_REG,
+ ring->desc_num / 8 - 1);
+
+ } else {
+ hns3_write_dev(q, HNS3_RING_TX_RING_BASEADDR_L_REG,
+ (u32)dma);
+ hns3_write_dev(q, HNS3_RING_TX_RING_BASEADDR_H_REG,
+ (u32)((dma >> 31) >> 1));
+
+ hns3_write_dev(q, HNS3_RING_TX_RING_BD_LEN_REG,
+ hns3_buf_size2type(ring->buf_size));
+ hns3_write_dev(q, HNS3_RING_TX_RING_BD_NUM_REG,
+ ring->desc_num / 8 - 1);
+ }
+}
+
+int hns3_init_all_ring(struct hns3_nic_priv *priv)
+{
+ struct hnae3_handle *h = priv->ae_handle;
+ int ring_num = h->kinfo.num_tqps * 2;
+ int i, j;
+ int ret;
+
+ for (i = 0; i < ring_num; i++) {
+ ret = hns3_alloc_ring_memory(priv->ring_data[i].ring);
+ if (ret) {
+ dev_err(priv->dev,
+ "Alloc ring memory fail! ret=%d\n", ret);
+ goto out_when_alloc_ring_memory;
+ }
+
+ hns3_init_ring_hw(priv->ring_data[i].ring);
+
+ u64_stats_init(&priv->ring_data[i].ring->syncp);
+ }
+
+ return 0;
+
+out_when_alloc_ring_memory:
+ for (j = i - 1; j >= 0; j--)
+ hns3_fini_ring(priv->ring_data[j].ring);
+
+ return -ENOMEM;
+}
+
+int hns3_uninit_all_ring(struct hns3_nic_priv *priv)
+{
+ struct hnae3_handle *h = priv->ae_handle;
+ int i;
+
+ for (i = 0; i < h->kinfo.num_tqps; i++) {
+ if (h->ae_algo->ops->reset_queue)
+ h->ae_algo->ops->reset_queue(h, i);
+
+ hns3_fini_ring(priv->ring_data[i].ring);
+ hns3_fini_ring(priv->ring_data[i + h->kinfo.num_tqps].ring);
+ }
+
+ return 0;
+}
+
+/* Set mac addr if it is configured. or leave it to the AE driver */
+static void hns3_init_mac_addr(struct net_device *netdev)
+{
+ struct hns3_nic_priv *priv = netdev_priv(netdev);
+ struct hnae3_handle *h = priv->ae_handle;
+ u8 mac_addr_temp[ETH_ALEN];
+
+ if (h->ae_algo->ops->get_mac_addr) {
+ h->ae_algo->ops->get_mac_addr(h, mac_addr_temp);
+ ether_addr_copy(netdev->dev_addr, mac_addr_temp);
+ }
+
+ /* Check if the MAC address is valid, if not get a random one */
+ if (!is_valid_ether_addr(netdev->dev_addr)) {
+ eth_hw_addr_random(netdev);
+ dev_warn(priv->dev, "using random MAC address %pM\n",
+ netdev->dev_addr);
+ }
+
+ if (h->ae_algo->ops->set_mac_addr)
+ h->ae_algo->ops->set_mac_addr(h, netdev->dev_addr);
+
+}
+
+static void hns3_nic_set_priv_ops(struct net_device *netdev)
+{
+ struct hns3_nic_priv *priv = netdev_priv(netdev);
+
+ if ((netdev->features & NETIF_F_TSO) ||
+ (netdev->features & NETIF_F_TSO6)) {
+ priv->ops.fill_desc = hns3_fill_desc_tso;
+ priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tso;
+ } else {
+ priv->ops.fill_desc = hns3_fill_desc;
+ priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tx;
+ }
+}
+
+static int hns3_client_init(struct hnae3_handle *handle)
+{
+ struct pci_dev *pdev = handle->pdev;
+ struct hns3_nic_priv *priv;
+ struct net_device *netdev;
+ int ret;
+
+ netdev = alloc_etherdev_mq(sizeof(struct hns3_nic_priv),
+ handle->kinfo.num_tqps);
+ if (!netdev)
+ return -ENOMEM;
+
+ priv = netdev_priv(netdev);
+ priv->dev = &pdev->dev;
+ priv->netdev = netdev;
+ priv->ae_handle = handle;
+ priv->last_reset_time = jiffies;
+ priv->reset_level = HNAE3_FUNC_RESET;
+ priv->tx_timeout_count = 0;
+
+ handle->kinfo.netdev = netdev;
+ handle->priv = (void *)priv;
+
+ hns3_init_mac_addr(netdev);
+
+ hns3_set_default_feature(netdev);
+
+ netdev->watchdog_timeo = HNS3_TX_TIMEOUT;
+ netdev->priv_flags |= IFF_UNICAST_FLT;
+ netdev->netdev_ops = &hns3_nic_netdev_ops;
+ SET_NETDEV_DEV(netdev, &pdev->dev);
+ hns3_ethtool_set_ops(netdev);
+ hns3_nic_set_priv_ops(netdev);
+
+ /* Carrier off reporting is important to ethtool even BEFORE open */
+ netif_carrier_off(netdev);
+
+ ret = hns3_get_ring_config(priv);
+ if (ret) {
+ ret = -ENOMEM;
+ goto out_get_ring_cfg;
+ }
+
+ ret = hns3_nic_init_vector_data(priv);
+ if (ret) {
+ ret = -ENOMEM;
+ goto out_init_vector_data;
+ }
+
+ ret = hns3_init_all_ring(priv);
+ if (ret) {
+ ret = -ENOMEM;
+ goto out_init_ring_data;
+ }
+
+ ret = register_netdev(netdev);
+ if (ret) {
+ dev_err(priv->dev, "probe register netdev fail!\n");
+ goto out_reg_netdev_fail;
+ }
+
+ hns3_dcbnl_setup(handle);
+
+ /* MTU range: (ETH_MIN_MTU(kernel default) - 9706) */
+ netdev->max_mtu = HNS3_MAX_MTU - (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
+
+ return ret;
+
+out_reg_netdev_fail:
+out_init_ring_data:
+ (void)hns3_nic_uninit_vector_data(priv);
+ priv->ring_data = NULL;
+out_init_vector_data:
+out_get_ring_cfg:
+ priv->ae_handle = NULL;
+ free_netdev(netdev);
+ return ret;
+}
+
+static void hns3_client_uninit(struct hnae3_handle *handle, bool reset)
+{
+ struct net_device *netdev = handle->kinfo.netdev;
+ struct hns3_nic_priv *priv = netdev_priv(netdev);
+ int ret;
+
+ if (netdev->reg_state != NETREG_UNINITIALIZED)
+ unregister_netdev(netdev);
+
+ ret = hns3_nic_uninit_vector_data(priv);
+ if (ret)
+ netdev_err(netdev, "uninit vector error\n");
+
+ ret = hns3_uninit_all_ring(priv);
+ if (ret)
+ netdev_err(netdev, "uninit ring error\n");
+
+ priv->ring_data = NULL;
+
+ free_netdev(netdev);
+}
+
+static void hns3_link_status_change(struct hnae3_handle *handle, bool linkup)
+{
+ struct net_device *netdev = handle->kinfo.netdev;
+
+ if (!netdev)
+ return;
+
+ if (linkup) {
+ netif_carrier_on(netdev);
+ netif_tx_wake_all_queues(netdev);
+ netdev_info(netdev, "link up\n");
+ } else {
+ netif_carrier_off(netdev);
+ netif_tx_stop_all_queues(netdev);
+ netdev_info(netdev, "link down\n");
+ }
+}
+
+static int hns3_client_setup_tc(struct hnae3_handle *handle, u8 tc)
+{
+ struct hnae3_knic_private_info *kinfo = &handle->kinfo;
+ struct net_device *ndev = kinfo->netdev;
+ bool if_running;
+ int ret;
+ u8 i;
+
+ if (tc > HNAE3_MAX_TC)
+ return -EINVAL;
+
+ if (!ndev)
+ return -ENODEV;
+
+ if_running = netif_running(ndev);
+
+ ret = netdev_set_num_tc(ndev, tc);
+ if (ret)
+ return ret;
+
+ if (if_running) {
+ (void)hns3_nic_net_stop(ndev);
+ msleep(100);
+ }
+
+ ret = (kinfo->dcb_ops && kinfo->dcb_ops->map_update) ?
+ kinfo->dcb_ops->map_update(handle) : -EOPNOTSUPP;
+ if (ret)
+ goto err_out;
+
+ if (tc <= 1) {
+ netdev_reset_tc(ndev);
+ goto out;
+ }
+
+ for (i = 0; i < HNAE3_MAX_TC; i++) {
+ struct hnae3_tc_info *tc_info = &kinfo->tc_info[i];
+
+ if (tc_info->enable)
+ netdev_set_tc_queue(ndev,
+ tc_info->tc,
+ tc_info->tqp_count,
+ tc_info->tqp_offset);
+ }
+
+ for (i = 0; i < HNAE3_MAX_USER_PRIO; i++) {
+ netdev_set_prio_tc_map(ndev, i,
+ kinfo->prio_tc[i]);
+ }
+
+out:
+ ret = hns3_nic_set_real_num_queue(ndev);
+
+err_out:
+ if (if_running)
+ (void)hns3_nic_net_open(ndev);
+
+ return ret;
+}
+
+static void hns3_recover_hw_addr(struct net_device *ndev)
+{
+ struct netdev_hw_addr_list *list;
+ struct netdev_hw_addr *ha, *tmp;
+
+ /* go through and sync uc_addr entries to the device */
+ list = &ndev->uc;
+ list_for_each_entry_safe(ha, tmp, &list->list, list)
+ hns3_nic_uc_sync(ndev, ha->addr);
+
+ /* go through and sync mc_addr entries to the device */
+ list = &ndev->mc;
+ list_for_each_entry_safe(ha, tmp, &list->list, list)
+ hns3_nic_mc_sync(ndev, ha->addr);
+}
+
+static void hns3_drop_skb_data(struct hns3_enet_ring *ring, struct sk_buff *skb)
+{
+ dev_kfree_skb_any(skb);
+}
+
+static void hns3_clear_all_ring(struct hnae3_handle *h)
+{
+ struct net_device *ndev = h->kinfo.netdev;
+ struct hns3_nic_priv *priv = netdev_priv(ndev);
+ u32 i;
+
+ for (i = 0; i < h->kinfo.num_tqps; i++) {
+ struct netdev_queue *dev_queue;
+ struct hns3_enet_ring *ring;
+
+ ring = priv->ring_data[i].ring;
+ hns3_clean_tx_ring(ring, ring->desc_num);
+ dev_queue = netdev_get_tx_queue(ndev,
+ priv->ring_data[i].queue_index);
+ netdev_tx_reset_queue(dev_queue);
+
+ ring = priv->ring_data[i + h->kinfo.num_tqps].ring;
+ hns3_clean_rx_ring(ring, ring->desc_num, hns3_drop_skb_data);
+ }
+}
+
+static int hns3_reset_notify_down_enet(struct hnae3_handle *handle)
+{
+ struct hnae3_knic_private_info *kinfo = &handle->kinfo;
+ struct net_device *ndev = kinfo->netdev;
+
+ if (!netif_running(ndev))
+ return -EIO;
+
+ return hns3_nic_net_stop(ndev);
+}
+
+static int hns3_reset_notify_up_enet(struct hnae3_handle *handle)
+{
+ struct hnae3_knic_private_info *kinfo = &handle->kinfo;
+ struct hns3_nic_priv *priv = netdev_priv(kinfo->netdev);
+ int ret = 0;
+
+ if (netif_running(kinfo->netdev)) {
+ ret = hns3_nic_net_up(kinfo->netdev);
+ if (ret) {
+ netdev_err(kinfo->netdev,
+ "hns net up fail, ret=%d!\n", ret);
+ return ret;
+ }
+
+ priv->last_reset_time = jiffies;
+ }
+
+ return ret;
+}
+
+static int hns3_reset_notify_init_enet(struct hnae3_handle *handle)
+{
+ struct net_device *netdev = handle->kinfo.netdev;
+ struct hns3_nic_priv *priv = netdev_priv(netdev);
+ int ret;
+
+ priv->reset_level = 1;
+ hns3_init_mac_addr(netdev);
+ hns3_nic_set_rx_mode(netdev);
+ hns3_recover_hw_addr(netdev);
+
+ /* Carrier off reporting is important to ethtool even BEFORE open */
+ netif_carrier_off(netdev);
+
+ ret = hns3_get_ring_config(priv);
+ if (ret)
+ return ret;
+
+ ret = hns3_nic_init_vector_data(priv);
+ if (ret)
+ return ret;
+
+ ret = hns3_init_all_ring(priv);
+ if (ret) {
+ hns3_nic_uninit_vector_data(priv);
+ priv->ring_data = NULL;
+ }
+
+ return ret;
+}
+
+static int hns3_reset_notify_uninit_enet(struct hnae3_handle *handle)
+{
+ struct net_device *netdev = handle->kinfo.netdev;
+ struct hns3_nic_priv *priv = netdev_priv(netdev);
+ int ret;
+
+ hns3_clear_all_ring(handle);
+
+ ret = hns3_nic_uninit_vector_data(priv);
+ if (ret) {
+ netdev_err(netdev, "uninit vector error\n");
+ return ret;
+ }
+
+ ret = hns3_uninit_all_ring(priv);
+ if (ret)
+ netdev_err(netdev, "uninit ring error\n");
+
+ priv->ring_data = NULL;
+
+ return ret;
+}
+
+static int hns3_reset_notify(struct hnae3_handle *handle,
+ enum hnae3_reset_notify_type type)
+{
+ int ret = 0;
+
+ switch (type) {
+ case HNAE3_UP_CLIENT:
+ ret = hns3_reset_notify_up_enet(handle);
+ break;
+ case HNAE3_DOWN_CLIENT:
+ ret = hns3_reset_notify_down_enet(handle);
+ break;
+ case HNAE3_INIT_CLIENT:
+ ret = hns3_reset_notify_init_enet(handle);
+ break;
+ case HNAE3_UNINIT_CLIENT:
+ ret = hns3_reset_notify_uninit_enet(handle);
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static const struct hnae3_client_ops client_ops = {
+ .init_instance = hns3_client_init,
+ .uninit_instance = hns3_client_uninit,
+ .link_status_change = hns3_link_status_change,
+ .setup_tc = hns3_client_setup_tc,
+ .reset_notify = hns3_reset_notify,
+};
+
+/* hns3_init_module - Driver registration routine
+ * hns3_init_module is the first routine called when the driver is
+ * loaded. All it does is register with the PCI subsystem.
+ */
+static int __init hns3_init_module(void)
+{
+ int ret;
+
+ pr_info("%s: %s - version\n", hns3_driver_name, hns3_driver_string);
+ pr_info("%s: %s\n", hns3_driver_name, hns3_copyright);
+
+ client.type = HNAE3_CLIENT_KNIC;
+ snprintf(client.name, HNAE3_CLIENT_NAME_LENGTH - 1, "%s",
+ hns3_driver_name);
+
+ client.ops = &client_ops;
+
+ ret = hnae3_register_client(&client);
+ if (ret)
+ return ret;
+
+ ret = pci_register_driver(&hns3_driver);
+ if (ret)
+ hnae3_unregister_client(&client);
+
+ return ret;
+}
+module_init(hns3_init_module);
+
+/* hns3_exit_module - Driver exit cleanup routine
+ * hns3_exit_module is called just before the driver is removed
+ * from memory.
+ */
+static void __exit hns3_exit_module(void)
+{
+ pci_unregister_driver(&hns3_driver);
+ hnae3_unregister_client(&client);
+}
+module_exit(hns3_exit_module);
+
+MODULE_DESCRIPTION("HNS3: Hisilicon Ethernet Driver");
+MODULE_AUTHOR("Huawei Tech. Co., Ltd.");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("pci:hns-nic");
--- /dev/null
+/*
+ * Copyright (c) 2016 Hisilicon Limited.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __HNS3_ENET_H
+#define __HNS3_ENET_H
+
+#include "hnae3.h"
+
+extern const char hns3_driver_version[];
+
+enum hns3_nic_state {
+ HNS3_NIC_STATE_TESTING,
+ HNS3_NIC_STATE_RESETTING,
+ HNS3_NIC_STATE_REINITING,
+ HNS3_NIC_STATE_DOWN,
+ HNS3_NIC_STATE_DISABLED,
+ HNS3_NIC_STATE_REMOVING,
+ HNS3_NIC_STATE_SERVICE_INITED,
+ HNS3_NIC_STATE_SERVICE_SCHED,
+ HNS3_NIC_STATE2_RESET_REQUESTED,
+ HNS3_NIC_STATE_MAX
+};
+
+#define HNS3_RING_RX_RING_BASEADDR_L_REG 0x00000
+#define HNS3_RING_RX_RING_BASEADDR_H_REG 0x00004
+#define HNS3_RING_RX_RING_BD_NUM_REG 0x00008
+#define HNS3_RING_RX_RING_BD_LEN_REG 0x0000C
+#define HNS3_RING_RX_RING_TAIL_REG 0x00018
+#define HNS3_RING_RX_RING_HEAD_REG 0x0001C
+#define HNS3_RING_RX_RING_FBDNUM_REG 0x00020
+#define HNS3_RING_RX_RING_PKTNUM_RECORD_REG 0x0002C
+
+#define HNS3_RING_TX_RING_BASEADDR_L_REG 0x00040
+#define HNS3_RING_TX_RING_BASEADDR_H_REG 0x00044
+#define HNS3_RING_TX_RING_BD_NUM_REG 0x00048
+#define HNS3_RING_TX_RING_BD_LEN_REG 0x0004C
+#define HNS3_RING_TX_RING_TAIL_REG 0x00058
+#define HNS3_RING_TX_RING_HEAD_REG 0x0005C
+#define HNS3_RING_TX_RING_FBDNUM_REG 0x00060
+#define HNS3_RING_TX_RING_OFFSET_REG 0x00064
+#define HNS3_RING_TX_RING_PKTNUM_RECORD_REG 0x0006C
+
+#define HNS3_RING_PREFETCH_EN_REG 0x0007C
+#define HNS3_RING_CFG_VF_NUM_REG 0x00080
+#define HNS3_RING_ASID_REG 0x0008C
+#define HNS3_RING_RX_VM_REG 0x00090
+#define HNS3_RING_T0_BE_RST 0x00094
+#define HNS3_RING_COULD_BE_RST 0x00098
+#define HNS3_RING_WRR_WEIGHT_REG 0x0009c
+
+#define HNS3_RING_INTMSK_RXWL_REG 0x000A0
+#define HNS3_RING_INTSTS_RX_RING_REG 0x000A4
+#define HNS3_RX_RING_INT_STS_REG 0x000A8
+#define HNS3_RING_INTMSK_TXWL_REG 0x000AC
+#define HNS3_RING_INTSTS_TX_RING_REG 0x000B0
+#define HNS3_TX_RING_INT_STS_REG 0x000B4
+#define HNS3_RING_INTMSK_RX_OVERTIME_REG 0x000B8
+#define HNS3_RING_INTSTS_RX_OVERTIME_REG 0x000BC
+#define HNS3_RING_INTMSK_TX_OVERTIME_REG 0x000C4
+#define HNS3_RING_INTSTS_TX_OVERTIME_REG 0x000C8
+
+#define HNS3_RING_MB_CTRL_REG 0x00100
+#define HNS3_RING_MB_DATA_BASE_REG 0x00200
+
+#define HNS3_TX_REG_OFFSET 0x40
+
+#define HNS3_RX_HEAD_SIZE 256
+
+#define HNS3_TX_TIMEOUT (5 * HZ)
+#define HNS3_RING_NAME_LEN 16
+#define HNS3_BUFFER_SIZE_2048 2048
+#define HNS3_RING_MAX_PENDING 32768
+#define HNS3_RING_MIN_PENDING 8
+#define HNS3_RING_BD_MULTIPLE 8
+#define HNS3_MAX_MTU 9728
+
+#define HNS3_BD_SIZE_512_TYPE 0
+#define HNS3_BD_SIZE_1024_TYPE 1
+#define HNS3_BD_SIZE_2048_TYPE 2
+#define HNS3_BD_SIZE_4096_TYPE 3
+
+#define HNS3_RX_FLAG_VLAN_PRESENT 0x1
+#define HNS3_RX_FLAG_L3ID_IPV4 0x0
+#define HNS3_RX_FLAG_L3ID_IPV6 0x1
+#define HNS3_RX_FLAG_L4ID_UDP 0x0
+#define HNS3_RX_FLAG_L4ID_TCP 0x1
+
+#define HNS3_RXD_DMAC_S 0
+#define HNS3_RXD_DMAC_M (0x3 << HNS3_RXD_DMAC_S)
+#define HNS3_RXD_VLAN_S 2
+#define HNS3_RXD_VLAN_M (0x3 << HNS3_RXD_VLAN_S)
+#define HNS3_RXD_L3ID_S 4
+#define HNS3_RXD_L3ID_M (0xf << HNS3_RXD_L3ID_S)
+#define HNS3_RXD_L4ID_S 8
+#define HNS3_RXD_L4ID_M (0xf << HNS3_RXD_L4ID_S)
+#define HNS3_RXD_FRAG_B 12
+#define HNS3_RXD_L2E_B 16
+#define HNS3_RXD_L3E_B 17
+#define HNS3_RXD_L4E_B 18
+#define HNS3_RXD_TRUNCAT_B 19
+#define HNS3_RXD_HOI_B 20
+#define HNS3_RXD_DOI_B 21
+#define HNS3_RXD_OL3E_B 22
+#define HNS3_RXD_OL4E_B 23
+
+#define HNS3_RXD_ODMAC_S 0
+#define HNS3_RXD_ODMAC_M (0x3 << HNS3_RXD_ODMAC_S)
+#define HNS3_RXD_OVLAN_S 2
+#define HNS3_RXD_OVLAN_M (0x3 << HNS3_RXD_OVLAN_S)
+#define HNS3_RXD_OL3ID_S 4
+#define HNS3_RXD_OL3ID_M (0xf << HNS3_RXD_OL3ID_S)
+#define HNS3_RXD_OL4ID_S 8
+#define HNS3_RXD_OL4ID_M (0xf << HNS3_RXD_OL4ID_S)
+#define HNS3_RXD_FBHI_S 12
+#define HNS3_RXD_FBHI_M (0x3 << HNS3_RXD_FBHI_S)
+#define HNS3_RXD_FBLI_S 14
+#define HNS3_RXD_FBLI_M (0x3 << HNS3_RXD_FBLI_S)
+
+#define HNS3_RXD_BDTYPE_S 0
+#define HNS3_RXD_BDTYPE_M (0xf << HNS3_RXD_BDTYPE_S)
+#define HNS3_RXD_VLD_B 4
+#define HNS3_RXD_UDP0_B 5
+#define HNS3_RXD_EXTEND_B 7
+#define HNS3_RXD_FE_B 8
+#define HNS3_RXD_LUM_B 9
+#define HNS3_RXD_CRCP_B 10
+#define HNS3_RXD_L3L4P_B 11
+#define HNS3_RXD_TSIND_S 12
+#define HNS3_RXD_TSIND_M (0x7 << HNS3_RXD_TSIND_S)
+#define HNS3_RXD_LKBK_B 15
+#define HNS3_RXD_HDL_S 16
+#define HNS3_RXD_HDL_M (0x7ff << HNS3_RXD_HDL_S)
+#define HNS3_RXD_HSIND_B 31
+
+#define HNS3_TXD_L3T_S 0
+#define HNS3_TXD_L3T_M (0x3 << HNS3_TXD_L3T_S)
+#define HNS3_TXD_L4T_S 2
+#define HNS3_TXD_L4T_M (0x3 << HNS3_TXD_L4T_S)
+#define HNS3_TXD_L3CS_B 4
+#define HNS3_TXD_L4CS_B 5
+#define HNS3_TXD_VLAN_B 6
+#define HNS3_TXD_TSO_B 7
+
+#define HNS3_TXD_L2LEN_S 8
+#define HNS3_TXD_L2LEN_M (0xff << HNS3_TXD_L2LEN_S)
+#define HNS3_TXD_L3LEN_S 16
+#define HNS3_TXD_L3LEN_M (0xff << HNS3_TXD_L3LEN_S)
+#define HNS3_TXD_L4LEN_S 24
+#define HNS3_TXD_L4LEN_M (0xff << HNS3_TXD_L4LEN_S)
+
+#define HNS3_TXD_OL3T_S 0
+#define HNS3_TXD_OL3T_M (0x3 << HNS3_TXD_OL3T_S)
+#define HNS3_TXD_OVLAN_B 2
+#define HNS3_TXD_MACSEC_B 3
+#define HNS3_TXD_TUNTYPE_S 4
+#define HNS3_TXD_TUNTYPE_M (0xf << HNS3_TXD_TUNTYPE_S)
+
+#define HNS3_TXD_BDTYPE_S 0
+#define HNS3_TXD_BDTYPE_M (0xf << HNS3_TXD_BDTYPE_S)
+#define HNS3_TXD_FE_B 4
+#define HNS3_TXD_SC_S 5
+#define HNS3_TXD_SC_M (0x3 << HNS3_TXD_SC_S)
+#define HNS3_TXD_EXTEND_B 7
+#define HNS3_TXD_VLD_B 8
+#define HNS3_TXD_RI_B 9
+#define HNS3_TXD_RA_B 10
+#define HNS3_TXD_TSYN_B 11
+#define HNS3_TXD_DECTTL_S 12
+#define HNS3_TXD_DECTTL_M (0xf << HNS3_TXD_DECTTL_S)
+
+#define HNS3_TXD_MSS_S 0
+#define HNS3_TXD_MSS_M (0x3fff << HNS3_TXD_MSS_S)
+
+#define HNS3_VECTOR_TX_IRQ BIT_ULL(0)
+#define HNS3_VECTOR_RX_IRQ BIT_ULL(1)
+
+#define HNS3_VECTOR_NOT_INITED 0
+#define HNS3_VECTOR_INITED 1
+
+#define HNS3_MAX_BD_SIZE 65535
+#define HNS3_MAX_BD_PER_FRAG 8
+#define HNS3_MAX_BD_PER_PKT MAX_SKB_FRAGS
+
+#define HNS3_VECTOR_GL0_OFFSET 0x100
+#define HNS3_VECTOR_GL1_OFFSET 0x200
+#define HNS3_VECTOR_GL2_OFFSET 0x300
+#define HNS3_VECTOR_RL_OFFSET 0x900
+#define HNS3_VECTOR_RL_EN_B 6
+
+enum hns3_pkt_l3t_type {
+ HNS3_L3T_NONE,
+ HNS3_L3T_IPV6,
+ HNS3_L3T_IPV4,
+ HNS3_L3T_RESERVED
+};
+
+enum hns3_pkt_l4t_type {
+ HNS3_L4T_UNKNOWN,
+ HNS3_L4T_TCP,
+ HNS3_L4T_UDP,
+ HNS3_L4T_SCTP
+};
+
+enum hns3_pkt_ol3t_type {
+ HNS3_OL3T_NONE,
+ HNS3_OL3T_IPV6,
+ HNS3_OL3T_IPV4_NO_CSUM,
+ HNS3_OL3T_IPV4_CSUM
+};
+
+enum hns3_pkt_tun_type {
+ HNS3_TUN_NONE,
+ HNS3_TUN_MAC_IN_UDP,
+ HNS3_TUN_NVGRE,
+ HNS3_TUN_OTHER
+};
+
+/* hardware spec ring buffer format */
+struct __packed hns3_desc {
+ __le64 addr;
+ union {
+ struct {
+ __le16 vlan_tag;
+ __le16 send_size;
+ union {
+ __le32 type_cs_vlan_tso_len;
+ struct {
+ __u8 type_cs_vlan_tso;
+ __u8 l2_len;
+ __u8 l3_len;
+ __u8 l4_len;
+ };
+ };
+ __le16 outer_vlan_tag;
+ __le16 tv;
+
+ union {
+ __le32 ol_type_vlan_len_msec;
+ struct {
+ __u8 ol_type_vlan_msec;
+ __u8 ol2_len;
+ __u8 ol3_len;
+ __u8 ol4_len;
+ };
+ };
+
+ __le32 paylen;
+ __le16 bdtp_fe_sc_vld_ra_ri;
+ __le16 mss;
+ } tx;
+
+ struct {
+ __le32 l234_info;
+ __le16 pkt_len;
+ __le16 size;
+
+ __le32 rss_hash;
+ __le16 fd_id;
+ __le16 vlan_tag;
+
+ union {
+ __le32 ol_info;
+ struct {
+ __le16 o_dm_vlan_id_fb;
+ __le16 ot_vlan_tag;
+ };
+ };
+
+ __le32 bd_base_info;
+ } rx;
+ };
+};
+
+struct hns3_desc_cb {
+ dma_addr_t dma; /* dma address of this desc */
+ void *buf; /* cpu addr for a desc */
+
+ /* priv data for the desc, e.g. skb when use with ip stack*/
+ void *priv;
+ u16 page_offset;
+ u16 reuse_flag;
+
+ u16 length; /* length of the buffer */
+
+ /* desc type, used by the ring user to mark the type of the priv data */
+ u16 type;
+};
+
+enum hns3_pkt_l3type {
+ HNS3_L3_TYPE_IPV4,
+ HNS3_L3_TYPE_IPV6,
+ HNS3_L3_TYPE_ARP,
+ HNS3_L3_TYPE_RARP,
+ HNS3_L3_TYPE_IPV4_OPT,
+ HNS3_L3_TYPE_IPV6_EXT,
+ HNS3_L3_TYPE_LLDP,
+ HNS3_L3_TYPE_BPDU,
+ HNS3_L3_TYPE_MAC_PAUSE,
+ HNS3_L3_TYPE_PFC_PAUSE,/* 0x9*/
+
+ /* reserved for 0xA~0xB*/
+
+ HNS3_L3_TYPE_CNM = 0xc,
+
+ /* reserved for 0xD~0xE*/
+
+ HNS3_L3_TYPE_PARSE_FAIL = 0xf /* must be last */
+};
+
+enum hns3_pkt_l4type {
+ HNS3_L4_TYPE_UDP,
+ HNS3_L4_TYPE_TCP,
+ HNS3_L4_TYPE_GRE,
+ HNS3_L4_TYPE_SCTP,
+ HNS3_L4_TYPE_IGMP,
+ HNS3_L4_TYPE_ICMP,
+
+ /* reserved for 0x6~0xE */
+
+ HNS3_L4_TYPE_PARSE_FAIL = 0xf /* must be last */
+};
+
+enum hns3_pkt_ol3type {
+ HNS3_OL3_TYPE_IPV4 = 0,
+ HNS3_OL3_TYPE_IPV6,
+ /* reserved for 0x2~0x3 */
+ HNS3_OL3_TYPE_IPV4_OPT = 4,
+ HNS3_OL3_TYPE_IPV6_EXT,
+
+ /* reserved for 0x6~0xE*/
+
+ HNS3_OL3_TYPE_PARSE_FAIL = 0xf /* must be last */
+};
+
+enum hns3_pkt_ol4type {
+ HNS3_OL4_TYPE_NO_TUN,
+ HNS3_OL4_TYPE_MAC_IN_UDP,
+ HNS3_OL4_TYPE_NVGRE,
+ HNS3_OL4_TYPE_UNKNOWN
+};
+
+struct ring_stats {
+ u64 io_err_cnt;
+ u64 sw_err_cnt;
+ u64 seg_pkt_cnt;
+ union {
+ struct {
+ u64 tx_pkts;
+ u64 tx_bytes;
+ u64 tx_err_cnt;
+ u64 restart_queue;
+ u64 tx_busy;
+ };
+ struct {
+ u64 rx_pkts;
+ u64 rx_bytes;
+ u64 rx_err_cnt;
+ u64 reuse_pg_cnt;
+ u64 err_pkt_len;
+ u64 non_vld_descs;
+ u64 err_bd_num;
+ u64 l2_err;
+ u64 l3l4_csum_err;
+ };
+ };
+};
+
+struct hns3_enet_ring {
+ u8 __iomem *io_base; /* base io address for the ring */
+ struct hns3_desc *desc; /* dma map address space */
+ struct hns3_desc_cb *desc_cb;
+ struct hns3_enet_ring *next;
+ struct hns3_enet_tqp_vector *tqp_vector;
+ struct hnae3_queue *tqp;
+ char ring_name[HNS3_RING_NAME_LEN];
+ struct device *dev; /* will be used for DMA mapping of descriptors */
+
+ /* statistic */
+ struct ring_stats stats;
+ struct u64_stats_sync syncp;
+
+ dma_addr_t desc_dma_addr;
+ u32 buf_size; /* size for hnae_desc->addr, preset by AE */
+ u16 desc_num; /* total number of desc */
+ u16 max_desc_num_per_pkt;
+ u16 max_raw_data_sz_per_desc;
+ u16 max_pkt_size;
+ int next_to_use; /* idx of next spare desc */
+
+ /* idx of lastest sent desc, the ring is empty when equal to
+ * next_to_use
+ */
+ int next_to_clean;
+
+ u32 flag; /* ring attribute */
+ int irq_init_flag;
+
+ int numa_node;
+ cpumask_t affinity_mask;
+};
+
+struct hns_queue;
+
+struct hns3_nic_ring_data {
+ struct hns3_enet_ring *ring;
+ struct napi_struct napi;
+ int queue_index;
+ int (*poll_one)(struct hns3_nic_ring_data *, int, void *);
+ void (*ex_process)(struct hns3_nic_ring_data *, struct sk_buff *);
+ void (*fini_process)(struct hns3_nic_ring_data *);
+};
+
+struct hns3_nic_ops {
+ int (*fill_desc)(struct hns3_enet_ring *ring, void *priv,
+ int size, dma_addr_t dma, int frag_end,
+ enum hns_desc_type type);
+ int (*maybe_stop_tx)(struct sk_buff **out_skb,
+ int *bnum, struct hns3_enet_ring *ring);
+ void (*get_rxd_bnum)(u32 bnum_flag, int *out_bnum);
+};
+
+enum hns3_flow_level_range {
+ HNS3_FLOW_LOW = 0,
+ HNS3_FLOW_MID = 1,
+ HNS3_FLOW_HIGH = 2,
+ HNS3_FLOW_ULTRA = 3,
+};
+
+enum hns3_link_mode_bits {
+ HNS3_LM_FIBRE_BIT = BIT(0),
+ HNS3_LM_AUTONEG_BIT = BIT(1),
+ HNS3_LM_TP_BIT = BIT(2),
+ HNS3_LM_PAUSE_BIT = BIT(3),
+ HNS3_LM_BACKPLANE_BIT = BIT(4),
+ HNS3_LM_10BASET_HALF_BIT = BIT(5),
+ HNS3_LM_10BASET_FULL_BIT = BIT(6),
+ HNS3_LM_100BASET_HALF_BIT = BIT(7),
+ HNS3_LM_100BASET_FULL_BIT = BIT(8),
+ HNS3_LM_1000BASET_FULL_BIT = BIT(9),
+ HNS3_LM_10000BASEKR_FULL_BIT = BIT(10),
+ HNS3_LM_25000BASEKR_FULL_BIT = BIT(11),
+ HNS3_LM_40000BASELR4_FULL_BIT = BIT(12),
+ HNS3_LM_50000BASEKR2_FULL_BIT = BIT(13),
+ HNS3_LM_100000BASEKR4_FULL_BIT = BIT(14),
+ HNS3_LM_COUNT = 15
+};
+
+#define HNS3_INT_GL_50K 0x000A
+#define HNS3_INT_GL_20K 0x0019
+#define HNS3_INT_GL_18K 0x001B
+#define HNS3_INT_GL_8K 0x003E
+
+struct hns3_enet_ring_group {
+ /* array of pointers to rings */
+ struct hns3_enet_ring *ring;
+ u64 total_bytes; /* total bytes processed this group */
+ u64 total_packets; /* total packets processed this group */
+ u16 count;
+ enum hns3_flow_level_range flow_level;
+ u16 int_gl;
+};
+
+struct hns3_enet_tqp_vector {
+ struct hnae3_handle *handle;
+ u8 __iomem *mask_addr;
+ int vector_irq;
+ int irq_init_flag;
+
+ u16 idx; /* index in the TQP vector array per handle. */
+
+ struct napi_struct napi;
+
+ struct hns3_enet_ring_group rx_group;
+ struct hns3_enet_ring_group tx_group;
+
+ u16 num_tqps; /* total number of tqps in TQP vector */
+
+ cpumask_t affinity_mask;
+ char name[HNAE3_INT_NAME_LEN];
+
+ /* when 0 should adjust interrupt coalesce parameter */
+ u8 int_adapt_down;
+} ____cacheline_internodealigned_in_smp;
+
+enum hns3_udp_tnl_type {
+ HNS3_UDP_TNL_VXLAN,
+ HNS3_UDP_TNL_GENEVE,
+ HNS3_UDP_TNL_MAX,
+};
+
+struct hns3_udp_tunnel {
+ u16 dst_port;
+ int used;
+};
+
+struct hns3_nic_priv {
+ struct hnae3_handle *ae_handle;
+ u32 enet_ver;
+ u32 port_id;
+ struct net_device *netdev;
+ struct device *dev;
+ struct hns3_nic_ops ops;
+
+ /**
+ * the cb for nic to manage the ring buffer, the first half of the
+ * array is for tx_ring and vice versa for the second half
+ */
+ struct hns3_nic_ring_data *ring_data;
+ struct hns3_enet_tqp_vector *tqp_vector;
+ u16 vector_num;
+
+ /* The most recently read link state */
+ int link;
+ u64 tx_timeout_count;
+ enum hnae3_reset_type reset_level;
+ unsigned long last_reset_time;
+
+ unsigned long state;
+
+ struct timer_list service_timer;
+
+ struct work_struct service_task;
+
+ struct notifier_block notifier_block;
+ /* Vxlan/Geneve information */
+ struct hns3_udp_tunnel udp_tnl[HNS3_UDP_TNL_MAX];
+};
+
+union l3_hdr_info {
+ struct iphdr *v4;
+ struct ipv6hdr *v6;
+ unsigned char *hdr;
+};
+
+union l4_hdr_info {
+ struct tcphdr *tcp;
+ struct udphdr *udp;
+ unsigned char *hdr;
+};
+
+/* the distance between [begin, end) in a ring buffer
+ * note: there is a unuse slot between the begin and the end
+ */
+static inline int ring_dist(struct hns3_enet_ring *ring, int begin, int end)
+{
+ return (end - begin + ring->desc_num) % ring->desc_num;
+}
+
+static inline int ring_space(struct hns3_enet_ring *ring)
+{
+ return ring->desc_num -
+ ring_dist(ring, ring->next_to_clean, ring->next_to_use) - 1;
+}
+
+static inline int is_ring_empty(struct hns3_enet_ring *ring)
+{
+ return ring->next_to_use == ring->next_to_clean;
+}
+
+static inline void hns3_write_reg(void __iomem *base, u32 reg, u32 value)
+{
+ u8 __iomem *reg_addr = READ_ONCE(base);
+
+ writel(value, reg_addr + reg);
+}
+
+#define hns3_write_dev(a, reg, value) \
+ hns3_write_reg((a)->io_base, (reg), (value))
+
+#define hnae_queue_xmit(tqp, buf_num) writel_relaxed(buf_num, \
+ (tqp)->io_base + HNS3_RING_TX_RING_TAIL_REG)
+
+#define ring_to_dev(ring) (&(ring)->tqp->handle->pdev->dev)
+
+#define ring_to_dma_dir(ring) (HNAE3_IS_TX_RING(ring) ? \
+ DMA_TO_DEVICE : DMA_FROM_DEVICE)
+
+#define tx_ring_data(priv, idx) ((priv)->ring_data[idx])
+
+#define hnae_buf_size(_ring) ((_ring)->buf_size)
+#define hnae_page_order(_ring) (get_order(hnae_buf_size(_ring)))
+#define hnae_page_size(_ring) (PAGE_SIZE << hnae_page_order(_ring))
+
+/* iterator for handling rings in ring group */
+#define hns3_for_each_ring(pos, head) \
+ for (pos = (head).ring; pos; pos = pos->next)
+
+#define hns3_get_handle(ndev) \
+ (((struct hns3_nic_priv *)netdev_priv(ndev))->ae_handle)
+
+void hns3_ethtool_set_ops(struct net_device *netdev);
+
+bool hns3_clean_tx_ring(struct hns3_enet_ring *ring, int budget);
+int hns3_init_all_ring(struct hns3_nic_priv *priv);
+int hns3_uninit_all_ring(struct hns3_nic_priv *priv);
+netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb, struct net_device *netdev);
+int hns3_clean_rx_ring(
+ struct hns3_enet_ring *ring, int budget,
+ void (*rx_fn)(struct hns3_enet_ring *, struct sk_buff *));
+
+#ifdef CONFIG_HNS3_DCB
+void hns3_dcbnl_setup(struct hnae3_handle *handle);
+#else
+static inline void hns3_dcbnl_setup(struct hnae3_handle *handle) {}
+#endif
+
+#endif
--- /dev/null
+/*
+ * Copyright (c) 2016~2017 Hisilicon Limited.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/string.h>
+#include <linux/phy.h>
+
+#include "hns3_enet.h"
+
+struct hns3_stats {
+ char stats_string[ETH_GSTRING_LEN];
+ int stats_size;
+ int stats_offset;
+};
+
+/* tqp related stats */
+#define HNS3_TQP_STAT(_string, _member) { \
+ .stats_string = _string, \
+ .stats_size = FIELD_SIZEOF(struct ring_stats, _member), \
+ .stats_offset = offsetof(struct hns3_enet_ring, stats), \
+} \
+
+static const struct hns3_stats hns3_txq_stats[] = {
+ /* Tx per-queue statistics */
+ HNS3_TQP_STAT("tx_io_err_cnt", io_err_cnt),
+ HNS3_TQP_STAT("tx_sw_err_cnt", sw_err_cnt),
+ HNS3_TQP_STAT("tx_seg_pkt_cnt", seg_pkt_cnt),
+ HNS3_TQP_STAT("tx_pkts", tx_pkts),
+ HNS3_TQP_STAT("tx_bytes", tx_bytes),
+ HNS3_TQP_STAT("tx_err_cnt", tx_err_cnt),
+ HNS3_TQP_STAT("tx_restart_queue", restart_queue),
+ HNS3_TQP_STAT("tx_busy", tx_busy),
+};
+
+#define HNS3_TXQ_STATS_COUNT ARRAY_SIZE(hns3_txq_stats)
+
+static const struct hns3_stats hns3_rxq_stats[] = {
+ /* Rx per-queue statistics */
+ HNS3_TQP_STAT("rx_io_err_cnt", io_err_cnt),
+ HNS3_TQP_STAT("rx_sw_err_cnt", sw_err_cnt),
+ HNS3_TQP_STAT("rx_seg_pkt_cnt", seg_pkt_cnt),
+ HNS3_TQP_STAT("rx_pkts", rx_pkts),
+ HNS3_TQP_STAT("rx_bytes", rx_bytes),
+ HNS3_TQP_STAT("rx_err_cnt", rx_err_cnt),
+ HNS3_TQP_STAT("rx_reuse_pg_cnt", reuse_pg_cnt),
+ HNS3_TQP_STAT("rx_err_pkt_len", err_pkt_len),
+ HNS3_TQP_STAT("rx_non_vld_descs", non_vld_descs),
+ HNS3_TQP_STAT("rx_err_bd_num", err_bd_num),
+ HNS3_TQP_STAT("rx_l2_err", l2_err),
+ HNS3_TQP_STAT("rx_l3l4_csum_err", l3l4_csum_err),
+};
+
+#define HNS3_RXQ_STATS_COUNT ARRAY_SIZE(hns3_rxq_stats)
+
+#define HNS3_TQP_STATS_COUNT (HNS3_TXQ_STATS_COUNT + HNS3_RXQ_STATS_COUNT)
+
+#define HNS3_SELF_TEST_TPYE_NUM 1
+#define HNS3_NIC_LB_TEST_PKT_NUM 1
+#define HNS3_NIC_LB_TEST_RING_ID 0
+#define HNS3_NIC_LB_TEST_PACKET_SIZE 128
+
+/* Nic loopback test err */
+#define HNS3_NIC_LB_TEST_NO_MEM_ERR 1
+#define HNS3_NIC_LB_TEST_TX_CNT_ERR 2
+#define HNS3_NIC_LB_TEST_RX_CNT_ERR 3
+
+struct hns3_link_mode_mapping {
+ u32 hns3_link_mode;
+ u32 ethtool_link_mode;
+};
+
+static const struct hns3_link_mode_mapping hns3_lm_map[] = {
+ {HNS3_LM_FIBRE_BIT, ETHTOOL_LINK_MODE_FIBRE_BIT},
+ {HNS3_LM_AUTONEG_BIT, ETHTOOL_LINK_MODE_Autoneg_BIT},
+ {HNS3_LM_TP_BIT, ETHTOOL_LINK_MODE_TP_BIT},
+ {HNS3_LM_PAUSE_BIT, ETHTOOL_LINK_MODE_Pause_BIT},
+ {HNS3_LM_BACKPLANE_BIT, ETHTOOL_LINK_MODE_Backplane_BIT},
+ {HNS3_LM_10BASET_HALF_BIT, ETHTOOL_LINK_MODE_10baseT_Half_BIT},
+ {HNS3_LM_10BASET_FULL_BIT, ETHTOOL_LINK_MODE_10baseT_Full_BIT},
+ {HNS3_LM_100BASET_HALF_BIT, ETHTOOL_LINK_MODE_100baseT_Half_BIT},
+ {HNS3_LM_100BASET_FULL_BIT, ETHTOOL_LINK_MODE_100baseT_Full_BIT},
+ {HNS3_LM_1000BASET_FULL_BIT, ETHTOOL_LINK_MODE_1000baseT_Full_BIT},
+};
+
+static int hns3_lp_setup(struct net_device *ndev, enum hnae3_loop loop)
+{
+ struct hnae3_handle *h = hns3_get_handle(ndev);
+ int ret;
+
+ if (!h->ae_algo->ops->set_loopback ||
+ !h->ae_algo->ops->set_promisc_mode)
+ return -EOPNOTSUPP;
+
+ switch (loop) {
+ case HNAE3_MAC_INTER_LOOP_MAC:
+ ret = h->ae_algo->ops->set_loopback(h, loop, true);
+ break;
+ case HNAE3_MAC_LOOP_NONE:
+ ret = h->ae_algo->ops->set_loopback(h,
+ HNAE3_MAC_INTER_LOOP_MAC, false);
+ break;
+ default:
+ ret = -ENOTSUPP;
+ break;
+ }
+
+ if (ret)
+ return ret;
+
+ if (loop == HNAE3_MAC_LOOP_NONE)
+ h->ae_algo->ops->set_promisc_mode(h, ndev->flags & IFF_PROMISC);
+ else
+ h->ae_algo->ops->set_promisc_mode(h, 1);
+
+ return ret;
+}
+
+static int hns3_lp_up(struct net_device *ndev, enum hnae3_loop loop_mode)
+{
+ struct hnae3_handle *h = hns3_get_handle(ndev);
+ int ret;
+
+ if (!h->ae_algo->ops->start)
+ return -EOPNOTSUPP;
+
+ ret = h->ae_algo->ops->start(h);
+ if (ret) {
+ netdev_err(ndev,
+ "hns3_lb_up ae start return error: %d\n", ret);
+ return ret;
+ }
+
+ ret = hns3_lp_setup(ndev, loop_mode);
+ usleep_range(10000, 20000);
+
+ return ret;
+}
+
+static int hns3_lp_down(struct net_device *ndev)
+{
+ struct hnae3_handle *h = hns3_get_handle(ndev);
+ int ret;
+
+ if (!h->ae_algo->ops->stop)
+ return -EOPNOTSUPP;
+
+ ret = hns3_lp_setup(ndev, HNAE3_MAC_LOOP_NONE);
+ if (ret) {
+ netdev_err(ndev, "lb_setup return error: %d\n", ret);
+ return ret;
+ }
+
+ h->ae_algo->ops->stop(h);
+ usleep_range(10000, 20000);
+
+ return 0;
+}
+
+static void hns3_lp_setup_skb(struct sk_buff *skb)
+{
+ struct net_device *ndev = skb->dev;
+ unsigned char *packet;
+ struct ethhdr *ethh;
+ unsigned int i;
+
+ skb_reserve(skb, NET_IP_ALIGN);
+ ethh = skb_put(skb, sizeof(struct ethhdr));
+ packet = skb_put(skb, HNS3_NIC_LB_TEST_PACKET_SIZE);
+
+ memcpy(ethh->h_dest, ndev->dev_addr, ETH_ALEN);
+ eth_zero_addr(ethh->h_source);
+ ethh->h_proto = htons(ETH_P_ARP);
+ skb_reset_mac_header(skb);
+
+ for (i = 0; i < HNS3_NIC_LB_TEST_PACKET_SIZE; i++)
+ packet[i] = (unsigned char)(i & 0xff);
+}
+
+static void hns3_lb_check_skb_data(struct hns3_enet_ring *ring,
+ struct sk_buff *skb)
+{
+ struct hns3_enet_tqp_vector *tqp_vector = ring->tqp_vector;
+ unsigned char *packet = skb->data;
+ u32 i;
+
+ for (i = 0; i < skb->len; i++)
+ if (packet[i] != (unsigned char)(i & 0xff))
+ break;
+
+ /* The packet is correctly received */
+ if (i == skb->len)
+ tqp_vector->rx_group.total_packets++;
+ else
+ print_hex_dump(KERN_ERR, "selftest:", DUMP_PREFIX_OFFSET, 16, 1,
+ skb->data, skb->len, true);
+
+ dev_kfree_skb_any(skb);
+}
+
+static u32 hns3_lb_check_rx_ring(struct hns3_nic_priv *priv, u32 budget)
+{
+ struct hnae3_handle *h = priv->ae_handle;
+ struct hnae3_knic_private_info *kinfo;
+ u32 i, rcv_good_pkt_total = 0;
+
+ kinfo = &h->kinfo;
+ for (i = kinfo->num_tqps; i < kinfo->num_tqps * 2; i++) {
+ struct hns3_enet_ring *ring = priv->ring_data[i].ring;
+ struct hns3_enet_ring_group *rx_group;
+ u64 pre_rx_pkt;
+
+ rx_group = &ring->tqp_vector->rx_group;
+ pre_rx_pkt = rx_group->total_packets;
+
+ hns3_clean_rx_ring(ring, budget, hns3_lb_check_skb_data);
+
+ rcv_good_pkt_total += (rx_group->total_packets - pre_rx_pkt);
+ rx_group->total_packets = pre_rx_pkt;
+ }
+ return rcv_good_pkt_total;
+}
+
+static void hns3_lb_clear_tx_ring(struct hns3_nic_priv *priv, u32 start_ringid,
+ u32 end_ringid, u32 budget)
+{
+ u32 i;
+
+ for (i = start_ringid; i <= end_ringid; i++) {
+ struct hns3_enet_ring *ring = priv->ring_data[i].ring;
+
+ hns3_clean_tx_ring(ring, budget);
+ }
+}
+
+/**
+ * hns3_lp_run_test - run loopback test
+ * @ndev: net device
+ * @mode: loopback type
+ */
+static int hns3_lp_run_test(struct net_device *ndev, enum hnae3_loop mode)
+{
+ struct hns3_nic_priv *priv = netdev_priv(ndev);
+ struct sk_buff *skb;
+ u32 i, good_cnt;
+ int ret_val = 0;
+
+ skb = alloc_skb(HNS3_NIC_LB_TEST_PACKET_SIZE + ETH_HLEN + NET_IP_ALIGN,
+ GFP_KERNEL);
+ if (!skb)
+ return HNS3_NIC_LB_TEST_NO_MEM_ERR;
+
+ skb->dev = ndev;
+ hns3_lp_setup_skb(skb);
+ skb->queue_mapping = HNS3_NIC_LB_TEST_RING_ID;
+
+ good_cnt = 0;
+ for (i = 0; i < HNS3_NIC_LB_TEST_PKT_NUM; i++) {
+ netdev_tx_t tx_ret;
+
+ skb_get(skb);
+ tx_ret = hns3_nic_net_xmit(skb, ndev);
+ if (tx_ret == NETDEV_TX_OK)
+ good_cnt++;
+ else
+ netdev_err(ndev, "hns3_lb_run_test xmit failed: %d\n",
+ tx_ret);
+ }
+ if (good_cnt != HNS3_NIC_LB_TEST_PKT_NUM) {
+ ret_val = HNS3_NIC_LB_TEST_TX_CNT_ERR;
+ netdev_err(ndev, "mode %d sent fail, cnt=0x%x, budget=0x%x\n",
+ mode, good_cnt, HNS3_NIC_LB_TEST_PKT_NUM);
+ goto out;
+ }
+
+ /* Allow 200 milliseconds for packets to go from Tx to Rx */
+ msleep(200);
+
+ good_cnt = hns3_lb_check_rx_ring(priv, HNS3_NIC_LB_TEST_PKT_NUM);
+ if (good_cnt != HNS3_NIC_LB_TEST_PKT_NUM) {
+ ret_val = HNS3_NIC_LB_TEST_RX_CNT_ERR;
+ netdev_err(ndev, "mode %d recv fail, cnt=0x%x, budget=0x%x\n",
+ mode, good_cnt, HNS3_NIC_LB_TEST_PKT_NUM);
+ }
+
+out:
+ hns3_lb_clear_tx_ring(priv, HNS3_NIC_LB_TEST_RING_ID,
+ HNS3_NIC_LB_TEST_RING_ID,
+ HNS3_NIC_LB_TEST_PKT_NUM);
+
+ kfree_skb(skb);
+ return ret_val;
+}
+
+/**
+ * hns3_nic_self_test - self test
+ * @ndev: net device
+ * @eth_test: test cmd
+ * @data: test result
+ */
+static void hns3_self_test(struct net_device *ndev,
+ struct ethtool_test *eth_test, u64 *data)
+{
+ struct hns3_nic_priv *priv = netdev_priv(ndev);
+ struct hnae3_handle *h = priv->ae_handle;
+ int st_param[HNS3_SELF_TEST_TPYE_NUM][2];
+ bool if_running = netif_running(ndev);
+ int test_index = 0;
+ u32 i;
+
+ /* Only do offline selftest, or pass by default */
+ if (eth_test->flags != ETH_TEST_FL_OFFLINE)
+ return;
+
+ st_param[HNAE3_MAC_INTER_LOOP_MAC][0] = HNAE3_MAC_INTER_LOOP_MAC;
+ st_param[HNAE3_MAC_INTER_LOOP_MAC][1] =
+ h->flags & HNAE3_SUPPORT_MAC_LOOPBACK;
+
+ if (if_running)
+ dev_close(ndev);
+
+ set_bit(HNS3_NIC_STATE_TESTING, &priv->state);
+
+ for (i = 0; i < HNS3_SELF_TEST_TPYE_NUM; i++) {
+ enum hnae3_loop loop_type = (enum hnae3_loop)st_param[i][0];
+
+ if (!st_param[i][1])
+ continue;
+
+ data[test_index] = hns3_lp_up(ndev, loop_type);
+ if (!data[test_index]) {
+ data[test_index] = hns3_lp_run_test(ndev, loop_type);
+ hns3_lp_down(ndev);
+ }
+
+ if (data[test_index])
+ eth_test->flags |= ETH_TEST_FL_FAILED;
+
+ test_index++;
+ }
+
+ clear_bit(HNS3_NIC_STATE_TESTING, &priv->state);
+
+ if (if_running)
+ dev_open(ndev);
+}
+
+static void hns3_driv_to_eth_caps(u32 caps, struct ethtool_link_ksettings *cmd,
+ bool is_advertised)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(hns3_lm_map); i++) {
+ if (!(caps & hns3_lm_map[i].hns3_link_mode))
+ continue;
+
+ if (is_advertised)
+ __set_bit(hns3_lm_map[i].ethtool_link_mode,
+ cmd->link_modes.advertising);
+ else
+ __set_bit(hns3_lm_map[i].ethtool_link_mode,
+ cmd->link_modes.supported);
+ }
+}
+
+static int hns3_get_sset_count(struct net_device *netdev, int stringset)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+ const struct hnae3_ae_ops *ops = h->ae_algo->ops;
+
+ if (!ops->get_sset_count)
+ return -EOPNOTSUPP;
+
+ switch (stringset) {
+ case ETH_SS_STATS:
+ return ((HNS3_TQP_STATS_COUNT * h->kinfo.num_tqps) +
+ ops->get_sset_count(h, stringset));
+
+ case ETH_SS_TEST:
+ return ops->get_sset_count(h, stringset);
+ }
+
+ return 0;
+}
+
+static void *hns3_update_strings(u8 *data, const struct hns3_stats *stats,
+ u32 stat_count, u32 num_tqps)
+{
+#define MAX_PREFIX_SIZE (8 + 4)
+ u32 size_left;
+ u32 i, j;
+ u32 n1;
+
+ for (i = 0; i < num_tqps; i++) {
+ for (j = 0; j < stat_count; j++) {
+ data[ETH_GSTRING_LEN - 1] = '\0';
+
+ /* first, prepend the prefix string */
+ n1 = snprintf(data, MAX_PREFIX_SIZE, "rcb_q%d_", i);
+ n1 = min_t(uint, n1, MAX_PREFIX_SIZE - 1);
+ size_left = (ETH_GSTRING_LEN - 1) - n1;
+
+ /* now, concatenate the stats string to it */
+ strncat(data, stats[j].stats_string, size_left);
+ data += ETH_GSTRING_LEN;
+ }
+ }
+
+ return data;
+}
+
+static u8 *hns3_get_strings_tqps(struct hnae3_handle *handle, u8 *data)
+{
+ struct hnae3_knic_private_info *kinfo = &handle->kinfo;
+
+ /* get strings for Tx */
+ data = hns3_update_strings(data, hns3_txq_stats, HNS3_TXQ_STATS_COUNT,
+ kinfo->num_tqps);
+
+ /* get strings for Rx */
+ data = hns3_update_strings(data, hns3_rxq_stats, HNS3_RXQ_STATS_COUNT,
+ kinfo->num_tqps);
+
+ return data;
+}
+
+static void hns3_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+ const struct hnae3_ae_ops *ops = h->ae_algo->ops;
+ char *buff = (char *)data;
+
+ if (!ops->get_strings)
+ return;
+
+ switch (stringset) {
+ case ETH_SS_STATS:
+ buff = hns3_get_strings_tqps(h, buff);
+ h->ae_algo->ops->get_strings(h, stringset, (u8 *)buff);
+ break;
+ case ETH_SS_TEST:
+ ops->get_strings(h, stringset, data);
+ break;
+ }
+}
+
+static u64 *hns3_get_stats_tqps(struct hnae3_handle *handle, u64 *data)
+{
+ struct hns3_nic_priv *nic_priv = (struct hns3_nic_priv *)handle->priv;
+ struct hnae3_knic_private_info *kinfo = &handle->kinfo;
+ struct hns3_enet_ring *ring;
+ u8 *stat;
+ u32 i;
+
+ /* get stats for Tx */
+ for (i = 0; i < kinfo->num_tqps; i++) {
+ ring = nic_priv->ring_data[i].ring;
+ for (i = 0; i < HNS3_TXQ_STATS_COUNT; i++) {
+ stat = (u8 *)ring + hns3_txq_stats[i].stats_offset;
+ *data++ = *(u64 *)stat;
+ }
+ }
+
+ /* get stats for Rx */
+ for (i = 0; i < kinfo->num_tqps; i++) {
+ ring = nic_priv->ring_data[i + kinfo->num_tqps].ring;
+ for (i = 0; i < HNS3_RXQ_STATS_COUNT; i++) {
+ stat = (u8 *)ring + hns3_rxq_stats[i].stats_offset;
+ *data++ = *(u64 *)stat;
+ }
+ }
+
+ return data;
+}
+
+/* hns3_get_stats - get detail statistics.
+ * @netdev: net device
+ * @stats: statistics info.
+ * @data: statistics data.
+ */
+static void hns3_get_stats(struct net_device *netdev,
+ struct ethtool_stats *stats, u64 *data)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+ u64 *p = data;
+
+ if (!h->ae_algo->ops->get_stats || !h->ae_algo->ops->update_stats) {
+ netdev_err(netdev, "could not get any statistics\n");
+ return;
+ }
+
+ h->ae_algo->ops->update_stats(h, &netdev->stats);
+
+ /* get per-queue stats */
+ p = hns3_get_stats_tqps(h, p);
+
+ /* get MAC & other misc hardware stats */
+ h->ae_algo->ops->get_stats(h, p);
+}
+
+static void hns3_get_drvinfo(struct net_device *netdev,
+ struct ethtool_drvinfo *drvinfo)
+{
+ struct hns3_nic_priv *priv = netdev_priv(netdev);
+ struct hnae3_handle *h = priv->ae_handle;
+
+ strncpy(drvinfo->version, hns3_driver_version,
+ sizeof(drvinfo->version));
+ drvinfo->version[sizeof(drvinfo->version) - 1] = '\0';
+
+ strncpy(drvinfo->driver, h->pdev->driver->name,
+ sizeof(drvinfo->driver));
+ drvinfo->driver[sizeof(drvinfo->driver) - 1] = '\0';
+
+ strncpy(drvinfo->bus_info, pci_name(h->pdev),
+ sizeof(drvinfo->bus_info));
+ drvinfo->bus_info[ETHTOOL_BUSINFO_LEN - 1] = '\0';
+
+ snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), "0x%08x",
+ priv->ae_handle->ae_algo->ops->get_fw_version(h));
+}
+
+static u32 hns3_get_link(struct net_device *netdev)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+
+ if (h->ae_algo && h->ae_algo->ops && h->ae_algo->ops->get_status)
+ return h->ae_algo->ops->get_status(h);
+ else
+ return 0;
+}
+
+static void hns3_get_ringparam(struct net_device *netdev,
+ struct ethtool_ringparam *param)
+{
+ struct hns3_nic_priv *priv = netdev_priv(netdev);
+ struct hnae3_handle *h = priv->ae_handle;
+ int queue_num = h->kinfo.num_tqps;
+
+ param->tx_max_pending = HNS3_RING_MAX_PENDING;
+ param->rx_max_pending = HNS3_RING_MAX_PENDING;
+
+ param->tx_pending = priv->ring_data[0].ring->desc_num;
+ param->rx_pending = priv->ring_data[queue_num].ring->desc_num;
+}
+
+static void hns3_get_pauseparam(struct net_device *netdev,
+ struct ethtool_pauseparam *param)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+
+ if (h->ae_algo && h->ae_algo->ops && h->ae_algo->ops->get_pauseparam)
+ h->ae_algo->ops->get_pauseparam(h, ¶m->autoneg,
+ ¶m->rx_pause, ¶m->tx_pause);
+}
+
+static int hns3_get_link_ksettings(struct net_device *netdev,
+ struct ethtool_link_ksettings *cmd)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+ u32 supported_caps;
+ u32 advertised_caps;
+ u8 media_type = HNAE3_MEDIA_TYPE_UNKNOWN;
+ u8 link_stat;
+
+ if (!h->ae_algo || !h->ae_algo->ops)
+ return -EOPNOTSUPP;
+
+ /* 1.auto_neg & speed & duplex from cmd */
+ if (netdev->phydev)
+ phy_ethtool_ksettings_get(netdev->phydev, cmd);
+ else if (h->ae_algo->ops->get_ksettings_an_result)
+ h->ae_algo->ops->get_ksettings_an_result(h,
+ &cmd->base.autoneg,
+ &cmd->base.speed,
+ &cmd->base.duplex);
+ else
+ return -EOPNOTSUPP;
+
+ link_stat = hns3_get_link(netdev);
+ if (!link_stat) {
+ cmd->base.speed = SPEED_UNKNOWN;
+ cmd->base.duplex = DUPLEX_UNKNOWN;
+ }
+
+ /* 2.media_type get from bios parameter block */
+ if (h->ae_algo->ops->get_media_type) {
+ h->ae_algo->ops->get_media_type(h, &media_type);
+
+ switch (media_type) {
+ case HNAE3_MEDIA_TYPE_FIBER:
+ cmd->base.port = PORT_FIBRE;
+ supported_caps = HNS3_LM_FIBRE_BIT |
+ HNS3_LM_AUTONEG_BIT |
+ HNS3_LM_PAUSE_BIT |
+ HNS3_LM_1000BASET_FULL_BIT;
+
+ advertised_caps = supported_caps;
+ break;
+ case HNAE3_MEDIA_TYPE_COPPER:
+ cmd->base.port = PORT_TP;
+ supported_caps = HNS3_LM_TP_BIT |
+ HNS3_LM_AUTONEG_BIT |
+ HNS3_LM_PAUSE_BIT |
+ HNS3_LM_1000BASET_FULL_BIT |
+ HNS3_LM_100BASET_FULL_BIT |
+ HNS3_LM_100BASET_HALF_BIT |
+ HNS3_LM_10BASET_FULL_BIT |
+ HNS3_LM_10BASET_HALF_BIT;
+ advertised_caps = supported_caps;
+ break;
+ case HNAE3_MEDIA_TYPE_BACKPLANE:
+ cmd->base.port = PORT_NONE;
+ supported_caps = HNS3_LM_BACKPLANE_BIT |
+ HNS3_LM_PAUSE_BIT |
+ HNS3_LM_AUTONEG_BIT |
+ HNS3_LM_1000BASET_FULL_BIT |
+ HNS3_LM_100BASET_FULL_BIT |
+ HNS3_LM_100BASET_HALF_BIT |
+ HNS3_LM_10BASET_FULL_BIT |
+ HNS3_LM_10BASET_HALF_BIT;
+
+ advertised_caps = supported_caps;
+ break;
+ case HNAE3_MEDIA_TYPE_UNKNOWN:
+ default:
+ cmd->base.port = PORT_OTHER;
+ supported_caps = 0;
+ advertised_caps = 0;
+ break;
+ }
+
+ if (!cmd->base.autoneg)
+ advertised_caps &= ~HNS3_LM_AUTONEG_BIT;
+
+ /* now, map driver link modes to ethtool link modes */
+ hns3_driv_to_eth_caps(supported_caps, cmd, false);
+ hns3_driv_to_eth_caps(advertised_caps, cmd, true);
+ }
+
+ /* 3.mdix_ctrl&mdix get from phy reg */
+ if (h->ae_algo->ops->get_mdix_mode)
+ h->ae_algo->ops->get_mdix_mode(h, &cmd->base.eth_tp_mdix_ctrl,
+ &cmd->base.eth_tp_mdix);
+ /* 4.mdio_support */
+ cmd->base.mdio_support = ETH_MDIO_SUPPORTS_C22;
+
+ return 0;
+}
+
+static int hns3_set_link_ksettings(struct net_device *netdev,
+ const struct ethtool_link_ksettings *cmd)
+{
+ /* Only support ksettings_set for netdev with phy attached for now */
+ if (netdev->phydev)
+ return phy_ethtool_ksettings_set(netdev->phydev, cmd);
+
+ return -EOPNOTSUPP;
+}
+
+static u32 hns3_get_rss_key_size(struct net_device *netdev)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+
+ if (!h->ae_algo || !h->ae_algo->ops ||
+ !h->ae_algo->ops->get_rss_key_size)
+ return -EOPNOTSUPP;
+
+ return h->ae_algo->ops->get_rss_key_size(h);
+}
+
+static u32 hns3_get_rss_indir_size(struct net_device *netdev)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+
+ if (!h->ae_algo || !h->ae_algo->ops ||
+ !h->ae_algo->ops->get_rss_indir_size)
+ return -EOPNOTSUPP;
+
+ return h->ae_algo->ops->get_rss_indir_size(h);
+}
+
+static int hns3_get_rss(struct net_device *netdev, u32 *indir, u8 *key,
+ u8 *hfunc)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+
+ if (!h->ae_algo || !h->ae_algo->ops || !h->ae_algo->ops->get_rss)
+ return -EOPNOTSUPP;
+
+ return h->ae_algo->ops->get_rss(h, indir, key, hfunc);
+}
+
+static int hns3_set_rss(struct net_device *netdev, const u32 *indir,
+ const u8 *key, const u8 hfunc)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+
+ if (!h->ae_algo || !h->ae_algo->ops || !h->ae_algo->ops->set_rss)
+ return -EOPNOTSUPP;
+
+ /* currently we only support Toeplitz hash */
+ if ((hfunc != ETH_RSS_HASH_NO_CHANGE) && (hfunc != ETH_RSS_HASH_TOP)) {
+ netdev_err(netdev,
+ "hash func not supported (only Toeplitz hash)\n");
+ return -EOPNOTSUPP;
+ }
+ if (!indir) {
+ netdev_err(netdev,
+ "set rss failed for indir is empty\n");
+ return -EOPNOTSUPP;
+ }
+
+ return h->ae_algo->ops->set_rss(h, indir, key, hfunc);
+}
+
+static int hns3_get_rxnfc(struct net_device *netdev,
+ struct ethtool_rxnfc *cmd,
+ u32 *rule_locs)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+
+ if (!h->ae_algo || !h->ae_algo->ops || !h->ae_algo->ops->get_rss_tuple)
+ return -EOPNOTSUPP;
+
+ switch (cmd->cmd) {
+ case ETHTOOL_GRXRINGS:
+ cmd->data = h->kinfo.num_tc * h->kinfo.rss_size;
+ break;
+ case ETHTOOL_GRXFH:
+ return h->ae_algo->ops->get_rss_tuple(h, cmd);
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static int hns3_change_all_ring_bd_num(struct hns3_nic_priv *priv,
+ u32 new_desc_num)
+{
+ struct hnae3_handle *h = priv->ae_handle;
+ int i;
+
+ h->kinfo.num_desc = new_desc_num;
+
+ for (i = 0; i < h->kinfo.num_tqps * 2; i++)
+ priv->ring_data[i].ring->desc_num = new_desc_num;
+
+ return hns3_init_all_ring(priv);
+}
+
+static int hns3_set_ringparam(struct net_device *ndev,
+ struct ethtool_ringparam *param)
+{
+ struct hns3_nic_priv *priv = netdev_priv(ndev);
+ struct hnae3_handle *h = priv->ae_handle;
+ bool if_running = netif_running(ndev);
+ u32 old_desc_num, new_desc_num;
+ int ret;
+
+ if (param->rx_mini_pending || param->rx_jumbo_pending)
+ return -EINVAL;
+
+ if (param->tx_pending != param->rx_pending) {
+ netdev_err(ndev,
+ "Descriptors of tx and rx must be equal");
+ return -EINVAL;
+ }
+
+ if (param->tx_pending > HNS3_RING_MAX_PENDING ||
+ param->tx_pending < HNS3_RING_MIN_PENDING) {
+ netdev_err(ndev,
+ "Descriptors requested (Tx/Rx: %d) out of range [%d-%d]\n",
+ param->tx_pending, HNS3_RING_MIN_PENDING,
+ HNS3_RING_MAX_PENDING);
+ return -EINVAL;
+ }
+
+ new_desc_num = param->tx_pending;
+
+ /* Hardware requires that its descriptors must be multiple of eight */
+ new_desc_num = ALIGN(new_desc_num, HNS3_RING_BD_MULTIPLE);
+ old_desc_num = h->kinfo.num_desc;
+ if (old_desc_num == new_desc_num)
+ return 0;
+
+ netdev_info(ndev,
+ "Changing descriptor count from %d to %d.\n",
+ old_desc_num, new_desc_num);
+
+ if (if_running)
+ dev_close(ndev);
+
+ ret = hns3_uninit_all_ring(priv);
+ if (ret)
+ return ret;
+
+ ret = hns3_change_all_ring_bd_num(priv, new_desc_num);
+ if (ret) {
+ ret = hns3_change_all_ring_bd_num(priv, old_desc_num);
+ if (ret) {
+ netdev_err(ndev,
+ "Revert to old bd num fail, ret=%d.\n", ret);
+ return ret;
+ }
+ }
+
+ if (if_running)
+ ret = dev_open(ndev);
+
+ return ret;
+}
+
+static int hns3_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+
+ if (!h->ae_algo || !h->ae_algo->ops || !h->ae_algo->ops->set_rss_tuple)
+ return -EOPNOTSUPP;
+
+ switch (cmd->cmd) {
+ case ETHTOOL_SRXFH:
+ return h->ae_algo->ops->set_rss_tuple(h, cmd);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static int hns3_nway_reset(struct net_device *netdev)
+{
+ struct phy_device *phy = netdev->phydev;
+
+ if (!netif_running(netdev))
+ return 0;
+
+ /* Only support nway_reset for netdev with phy attached for now */
+ if (!phy)
+ return -EOPNOTSUPP;
+
+ if (phy->autoneg != AUTONEG_ENABLE)
+ return -EINVAL;
+
+ return genphy_restart_aneg(phy);
+}
+
+static const struct ethtool_ops hns3vf_ethtool_ops = {
+ .get_drvinfo = hns3_get_drvinfo,
+ .get_ringparam = hns3_get_ringparam,
+ .set_ringparam = hns3_set_ringparam,
+ .get_strings = hns3_get_strings,
+ .get_ethtool_stats = hns3_get_stats,
+ .get_sset_count = hns3_get_sset_count,
+ .get_rxnfc = hns3_get_rxnfc,
+ .get_rxfh_key_size = hns3_get_rss_key_size,
+ .get_rxfh_indir_size = hns3_get_rss_indir_size,
+ .get_rxfh = hns3_get_rss,
+ .set_rxfh = hns3_set_rss,
+ .get_link_ksettings = hns3_get_link_ksettings,
+};
+
+static const struct ethtool_ops hns3_ethtool_ops = {
+ .self_test = hns3_self_test,
+ .get_drvinfo = hns3_get_drvinfo,
+ .get_link = hns3_get_link,
+ .get_ringparam = hns3_get_ringparam,
+ .set_ringparam = hns3_set_ringparam,
+ .get_pauseparam = hns3_get_pauseparam,
+ .get_strings = hns3_get_strings,
+ .get_ethtool_stats = hns3_get_stats,
+ .get_sset_count = hns3_get_sset_count,
+ .get_rxnfc = hns3_get_rxnfc,
+ .set_rxnfc = hns3_set_rxnfc,
+ .get_rxfh_key_size = hns3_get_rss_key_size,
+ .get_rxfh_indir_size = hns3_get_rss_indir_size,
+ .get_rxfh = hns3_get_rss,
+ .set_rxfh = hns3_set_rss,
+ .get_link_ksettings = hns3_get_link_ksettings,
+ .set_link_ksettings = hns3_set_link_ksettings,
+ .nway_reset = hns3_nway_reset,
+};
+
+void hns3_ethtool_set_ops(struct net_device *netdev)
+{
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+
+ if (h->flags & HNAE3_SUPPORT_VF)
+ netdev->ethtool_ops = &hns3vf_ethtool_ops;
+ else
+ netdev->ethtool_ops = &hns3_ethtool_ops;
+}
hclge-objs = hclge_main.o hclge_cmd.o hclge_mdio.o hclge_tm.o
hclge-$(CONFIG_HNS3_DCB) += hclge_dcb.o
-
-obj-$(CONFIG_HNS3_ENET) += hns3.o
-hns3-objs = hns3_enet.o hns3_ethtool.o
-
-hns3-$(CONFIG_HNS3_DCB) += hns3_dcbnl.o
+++ /dev/null
-/*
- * Copyright (c) 2016-2017 Hisilicon Limited.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#include "hnae3.h"
-#include "hns3_enet.h"
-
-static
-int hns3_dcbnl_ieee_getets(struct net_device *ndev, struct ieee_ets *ets)
-{
- struct hnae3_handle *h = hns3_get_handle(ndev);
-
- if (h->kinfo.dcb_ops->ieee_getets)
- return h->kinfo.dcb_ops->ieee_getets(h, ets);
-
- return -EOPNOTSUPP;
-}
-
-static
-int hns3_dcbnl_ieee_setets(struct net_device *ndev, struct ieee_ets *ets)
-{
- struct hnae3_handle *h = hns3_get_handle(ndev);
-
- if (h->kinfo.dcb_ops->ieee_setets)
- return h->kinfo.dcb_ops->ieee_setets(h, ets);
-
- return -EOPNOTSUPP;
-}
-
-static
-int hns3_dcbnl_ieee_getpfc(struct net_device *ndev, struct ieee_pfc *pfc)
-{
- struct hnae3_handle *h = hns3_get_handle(ndev);
-
- if (h->kinfo.dcb_ops->ieee_getpfc)
- return h->kinfo.dcb_ops->ieee_getpfc(h, pfc);
-
- return -EOPNOTSUPP;
-}
-
-static
-int hns3_dcbnl_ieee_setpfc(struct net_device *ndev, struct ieee_pfc *pfc)
-{
- struct hnae3_handle *h = hns3_get_handle(ndev);
-
- if (h->kinfo.dcb_ops->ieee_setpfc)
- return h->kinfo.dcb_ops->ieee_setpfc(h, pfc);
-
- return -EOPNOTSUPP;
-}
-
-/* DCBX configuration */
-static u8 hns3_dcbnl_getdcbx(struct net_device *ndev)
-{
- struct hnae3_handle *h = hns3_get_handle(ndev);
-
- if (h->kinfo.dcb_ops->getdcbx)
- return h->kinfo.dcb_ops->getdcbx(h);
-
- return 0;
-}
-
-/* return 0 if successful, otherwise fail */
-static u8 hns3_dcbnl_setdcbx(struct net_device *ndev, u8 mode)
-{
- struct hnae3_handle *h = hns3_get_handle(ndev);
-
- if (h->kinfo.dcb_ops->setdcbx)
- return h->kinfo.dcb_ops->setdcbx(h, mode);
-
- return 1;
-}
-
-static const struct dcbnl_rtnl_ops hns3_dcbnl_ops = {
- .ieee_getets = hns3_dcbnl_ieee_getets,
- .ieee_setets = hns3_dcbnl_ieee_setets,
- .ieee_getpfc = hns3_dcbnl_ieee_getpfc,
- .ieee_setpfc = hns3_dcbnl_ieee_setpfc,
- .getdcbx = hns3_dcbnl_getdcbx,
- .setdcbx = hns3_dcbnl_setdcbx,
-};
-
-/* hclge_dcbnl_setup - DCBNL setup
- * @handle: the corresponding vport handle
- * Set up DCBNL
- */
-void hns3_dcbnl_setup(struct hnae3_handle *handle)
-{
- struct net_device *dev = handle->kinfo.netdev;
-
- if (!handle->kinfo.dcb_ops)
- return;
-
- dev->dcbnl_ops = &hns3_dcbnl_ops;
-}
+++ /dev/null
-/*
- * Copyright (c) 2016~2017 Hisilicon Limited.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#include <linux/dma-mapping.h>
-#include <linux/etherdevice.h>
-#include <linux/interrupt.h>
-#include <linux/if_vlan.h>
-#include <linux/ip.h>
-#include <linux/ipv6.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/skbuff.h>
-#include <linux/sctp.h>
-#include <linux/vermagic.h>
-#include <net/gre.h>
-#include <net/pkt_cls.h>
-#include <net/vxlan.h>
-
-#include "hnae3.h"
-#include "hns3_enet.h"
-
-static const char hns3_driver_name[] = "hns3";
-const char hns3_driver_version[] = VERMAGIC_STRING;
-static const char hns3_driver_string[] =
- "Hisilicon Ethernet Network Driver for Hip08 Family";
-static const char hns3_copyright[] = "Copyright (c) 2017 Huawei Corporation.";
-static struct hnae3_client client;
-
-/* hns3_pci_tbl - PCI Device ID Table
- *
- * Last entry must be all 0s
- *
- * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
- * Class, Class Mask, private data (not used) }
- */
-static const struct pci_device_id hns3_pci_tbl[] = {
- {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_GE), 0},
- {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE), 0},
- {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE_RDMA),
- HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
- {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE_RDMA_MACSEC),
- HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
- {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_50GE_RDMA),
- HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
- {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_50GE_RDMA_MACSEC),
- HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
- {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_RDMA_MACSEC),
- HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
- /* required last entry */
- {0, }
-};
-MODULE_DEVICE_TABLE(pci, hns3_pci_tbl);
-
-static irqreturn_t hns3_irq_handle(int irq, void *dev)
-{
- struct hns3_enet_tqp_vector *tqp_vector = dev;
-
- napi_schedule(&tqp_vector->napi);
-
- return IRQ_HANDLED;
-}
-
-static void hns3_nic_uninit_irq(struct hns3_nic_priv *priv)
-{
- struct hns3_enet_tqp_vector *tqp_vectors;
- unsigned int i;
-
- for (i = 0; i < priv->vector_num; i++) {
- tqp_vectors = &priv->tqp_vector[i];
-
- if (tqp_vectors->irq_init_flag != HNS3_VECTOR_INITED)
- continue;
-
- /* release the irq resource */
- free_irq(tqp_vectors->vector_irq, tqp_vectors);
- tqp_vectors->irq_init_flag = HNS3_VECTOR_NOT_INITED;
- }
-}
-
-static int hns3_nic_init_irq(struct hns3_nic_priv *priv)
-{
- struct hns3_enet_tqp_vector *tqp_vectors;
- int txrx_int_idx = 0;
- int rx_int_idx = 0;
- int tx_int_idx = 0;
- unsigned int i;
- int ret;
-
- for (i = 0; i < priv->vector_num; i++) {
- tqp_vectors = &priv->tqp_vector[i];
-
- if (tqp_vectors->irq_init_flag == HNS3_VECTOR_INITED)
- continue;
-
- if (tqp_vectors->tx_group.ring && tqp_vectors->rx_group.ring) {
- snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1,
- "%s-%s-%d", priv->netdev->name, "TxRx",
- txrx_int_idx++);
- txrx_int_idx++;
- } else if (tqp_vectors->rx_group.ring) {
- snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1,
- "%s-%s-%d", priv->netdev->name, "Rx",
- rx_int_idx++);
- } else if (tqp_vectors->tx_group.ring) {
- snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1,
- "%s-%s-%d", priv->netdev->name, "Tx",
- tx_int_idx++);
- } else {
- /* Skip this unused q_vector */
- continue;
- }
-
- tqp_vectors->name[HNAE3_INT_NAME_LEN - 1] = '\0';
-
- ret = request_irq(tqp_vectors->vector_irq, hns3_irq_handle, 0,
- tqp_vectors->name,
- tqp_vectors);
- if (ret) {
- netdev_err(priv->netdev, "request irq(%d) fail\n",
- tqp_vectors->vector_irq);
- return ret;
- }
-
- tqp_vectors->irq_init_flag = HNS3_VECTOR_INITED;
- }
-
- return 0;
-}
-
-static void hns3_mask_vector_irq(struct hns3_enet_tqp_vector *tqp_vector,
- u32 mask_en)
-{
- writel(mask_en, tqp_vector->mask_addr);
-}
-
-static void hns3_vector_enable(struct hns3_enet_tqp_vector *tqp_vector)
-{
- napi_enable(&tqp_vector->napi);
-
- /* enable vector */
- hns3_mask_vector_irq(tqp_vector, 1);
-}
-
-static void hns3_vector_disable(struct hns3_enet_tqp_vector *tqp_vector)
-{
- /* disable vector */
- hns3_mask_vector_irq(tqp_vector, 0);
-
- disable_irq(tqp_vector->vector_irq);
- napi_disable(&tqp_vector->napi);
-}
-
-static void hns3_set_vector_coalesc_gl(struct hns3_enet_tqp_vector *tqp_vector,
- u32 gl_value)
-{
- /* this defines the configuration for GL (Interrupt Gap Limiter)
- * GL defines inter interrupt gap.
- * GL and RL(Rate Limiter) are 2 ways to acheive interrupt coalescing
- */
- writel(gl_value, tqp_vector->mask_addr + HNS3_VECTOR_GL0_OFFSET);
- writel(gl_value, tqp_vector->mask_addr + HNS3_VECTOR_GL1_OFFSET);
- writel(gl_value, tqp_vector->mask_addr + HNS3_VECTOR_GL2_OFFSET);
-}
-
-static void hns3_set_vector_coalesc_rl(struct hns3_enet_tqp_vector *tqp_vector,
- u32 rl_value)
-{
- /* this defines the configuration for RL (Interrupt Rate Limiter).
- * Rl defines rate of interrupts i.e. number of interrupts-per-second
- * GL and RL(Rate Limiter) are 2 ways to acheive interrupt coalescing
- */
- writel(rl_value, tqp_vector->mask_addr + HNS3_VECTOR_RL_OFFSET);
-}
-
-static void hns3_vector_gl_rl_init(struct hns3_enet_tqp_vector *tqp_vector)
-{
- /* initialize the configuration for interrupt coalescing.
- * 1. GL (Interrupt Gap Limiter)
- * 2. RL (Interrupt Rate Limiter)
- */
-
- /* Default :enable interrupt coalesce */
- tqp_vector->rx_group.int_gl = HNS3_INT_GL_50K;
- tqp_vector->tx_group.int_gl = HNS3_INT_GL_50K;
- hns3_set_vector_coalesc_gl(tqp_vector, HNS3_INT_GL_50K);
- /* for now we are disabling Interrupt RL - we
- * will re-enable later
- */
- hns3_set_vector_coalesc_rl(tqp_vector, 0);
- tqp_vector->rx_group.flow_level = HNS3_FLOW_LOW;
- tqp_vector->tx_group.flow_level = HNS3_FLOW_LOW;
-}
-
-static int hns3_nic_set_real_num_queue(struct net_device *netdev)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
- struct hnae3_knic_private_info *kinfo = &h->kinfo;
- unsigned int queue_size = kinfo->rss_size * kinfo->num_tc;
- int ret;
-
- ret = netif_set_real_num_tx_queues(netdev, queue_size);
- if (ret) {
- netdev_err(netdev,
- "netif_set_real_num_tx_queues fail, ret=%d!\n",
- ret);
- return ret;
- }
-
- ret = netif_set_real_num_rx_queues(netdev, queue_size);
- if (ret) {
- netdev_err(netdev,
- "netif_set_real_num_rx_queues fail, ret=%d!\n", ret);
- return ret;
- }
-
- return 0;
-}
-
-static int hns3_nic_net_up(struct net_device *netdev)
-{
- struct hns3_nic_priv *priv = netdev_priv(netdev);
- struct hnae3_handle *h = priv->ae_handle;
- int i, j;
- int ret;
-
- /* get irq resource for all vectors */
- ret = hns3_nic_init_irq(priv);
- if (ret) {
- netdev_err(netdev, "hns init irq failed! ret=%d\n", ret);
- return ret;
- }
-
- /* enable the vectors */
- for (i = 0; i < priv->vector_num; i++)
- hns3_vector_enable(&priv->tqp_vector[i]);
-
- /* start the ae_dev */
- ret = h->ae_algo->ops->start ? h->ae_algo->ops->start(h) : 0;
- if (ret)
- goto out_start_err;
-
- return 0;
-
-out_start_err:
- for (j = i - 1; j >= 0; j--)
- hns3_vector_disable(&priv->tqp_vector[j]);
-
- hns3_nic_uninit_irq(priv);
-
- return ret;
-}
-
-static int hns3_nic_net_open(struct net_device *netdev)
-{
- struct hns3_nic_priv *priv = netdev_priv(netdev);
- int ret;
-
- netif_carrier_off(netdev);
-
- ret = hns3_nic_set_real_num_queue(netdev);
- if (ret)
- return ret;
-
- ret = hns3_nic_net_up(netdev);
- if (ret) {
- netdev_err(netdev,
- "hns net up fail, ret=%d!\n", ret);
- return ret;
- }
-
- priv->last_reset_time = jiffies;
- return 0;
-}
-
-static void hns3_nic_net_down(struct net_device *netdev)
-{
- struct hns3_nic_priv *priv = netdev_priv(netdev);
- const struct hnae3_ae_ops *ops;
- int i;
-
- /* stop ae_dev */
- ops = priv->ae_handle->ae_algo->ops;
- if (ops->stop)
- ops->stop(priv->ae_handle);
-
- /* disable vectors */
- for (i = 0; i < priv->vector_num; i++)
- hns3_vector_disable(&priv->tqp_vector[i]);
-
- /* free irq resources */
- hns3_nic_uninit_irq(priv);
-}
-
-static int hns3_nic_net_stop(struct net_device *netdev)
-{
- netif_tx_stop_all_queues(netdev);
- netif_carrier_off(netdev);
-
- hns3_nic_net_down(netdev);
-
- return 0;
-}
-
-static int hns3_nic_uc_sync(struct net_device *netdev,
- const unsigned char *addr)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
-
- if (h->ae_algo->ops->add_uc_addr)
- return h->ae_algo->ops->add_uc_addr(h, addr);
-
- return 0;
-}
-
-static int hns3_nic_uc_unsync(struct net_device *netdev,
- const unsigned char *addr)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
-
- if (h->ae_algo->ops->rm_uc_addr)
- return h->ae_algo->ops->rm_uc_addr(h, addr);
-
- return 0;
-}
-
-static int hns3_nic_mc_sync(struct net_device *netdev,
- const unsigned char *addr)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
-
- if (h->ae_algo->ops->add_mc_addr)
- return h->ae_algo->ops->add_mc_addr(h, addr);
-
- return 0;
-}
-
-static int hns3_nic_mc_unsync(struct net_device *netdev,
- const unsigned char *addr)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
-
- if (h->ae_algo->ops->rm_mc_addr)
- return h->ae_algo->ops->rm_mc_addr(h, addr);
-
- return 0;
-}
-
-static void hns3_nic_set_rx_mode(struct net_device *netdev)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
-
- if (h->ae_algo->ops->set_promisc_mode) {
- if (netdev->flags & IFF_PROMISC)
- h->ae_algo->ops->set_promisc_mode(h, 1);
- else
- h->ae_algo->ops->set_promisc_mode(h, 0);
- }
- if (__dev_uc_sync(netdev, hns3_nic_uc_sync, hns3_nic_uc_unsync))
- netdev_err(netdev, "sync uc address fail\n");
- if (netdev->flags & IFF_MULTICAST)
- if (__dev_mc_sync(netdev, hns3_nic_mc_sync, hns3_nic_mc_unsync))
- netdev_err(netdev, "sync mc address fail\n");
-}
-
-static int hns3_set_tso(struct sk_buff *skb, u32 *paylen,
- u16 *mss, u32 *type_cs_vlan_tso)
-{
- u32 l4_offset, hdr_len;
- union l3_hdr_info l3;
- union l4_hdr_info l4;
- u32 l4_paylen;
- int ret;
-
- if (!skb_is_gso(skb))
- return 0;
-
- ret = skb_cow_head(skb, 0);
- if (ret)
- return ret;
-
- l3.hdr = skb_network_header(skb);
- l4.hdr = skb_transport_header(skb);
-
- /* Software should clear the IPv4's checksum field when tso is
- * needed.
- */
- if (l3.v4->version == 4)
- l3.v4->check = 0;
-
- /* tunnel packet.*/
- if (skb_shinfo(skb)->gso_type & (SKB_GSO_GRE |
- SKB_GSO_GRE_CSUM |
- SKB_GSO_UDP_TUNNEL |
- SKB_GSO_UDP_TUNNEL_CSUM)) {
- if ((!(skb_shinfo(skb)->gso_type &
- SKB_GSO_PARTIAL)) &&
- (skb_shinfo(skb)->gso_type &
- SKB_GSO_UDP_TUNNEL_CSUM)) {
- /* Software should clear the udp's checksum
- * field when tso is needed.
- */
- l4.udp->check = 0;
- }
- /* reset l3&l4 pointers from outer to inner headers */
- l3.hdr = skb_inner_network_header(skb);
- l4.hdr = skb_inner_transport_header(skb);
-
- /* Software should clear the IPv4's checksum field when
- * tso is needed.
- */
- if (l3.v4->version == 4)
- l3.v4->check = 0;
- }
-
- /* normal or tunnel packet*/
- l4_offset = l4.hdr - skb->data;
- hdr_len = (l4.tcp->doff * 4) + l4_offset;
-
- /* remove payload length from inner pseudo checksum when tso*/
- l4_paylen = skb->len - l4_offset;
- csum_replace_by_diff(&l4.tcp->check,
- (__force __wsum)htonl(l4_paylen));
-
- /* find the txbd field values */
- *paylen = skb->len - hdr_len;
- hnae_set_bit(*type_cs_vlan_tso,
- HNS3_TXD_TSO_B, 1);
-
- /* get MSS for TSO */
- *mss = skb_shinfo(skb)->gso_size;
-
- return 0;
-}
-
-static int hns3_get_l4_protocol(struct sk_buff *skb, u8 *ol4_proto,
- u8 *il4_proto)
-{
- union {
- struct iphdr *v4;
- struct ipv6hdr *v6;
- unsigned char *hdr;
- } l3;
- unsigned char *l4_hdr;
- unsigned char *exthdr;
- u8 l4_proto_tmp;
- __be16 frag_off;
-
- /* find outer header point */
- l3.hdr = skb_network_header(skb);
- l4_hdr = skb_inner_transport_header(skb);
-
- if (skb->protocol == htons(ETH_P_IPV6)) {
- exthdr = l3.hdr + sizeof(*l3.v6);
- l4_proto_tmp = l3.v6->nexthdr;
- if (l4_hdr != exthdr)
- ipv6_skip_exthdr(skb, exthdr - skb->data,
- &l4_proto_tmp, &frag_off);
- } else if (skb->protocol == htons(ETH_P_IP)) {
- l4_proto_tmp = l3.v4->protocol;
- } else {
- return -EINVAL;
- }
-
- *ol4_proto = l4_proto_tmp;
-
- /* tunnel packet */
- if (!skb->encapsulation) {
- *il4_proto = 0;
- return 0;
- }
-
- /* find inner header point */
- l3.hdr = skb_inner_network_header(skb);
- l4_hdr = skb_inner_transport_header(skb);
-
- if (l3.v6->version == 6) {
- exthdr = l3.hdr + sizeof(*l3.v6);
- l4_proto_tmp = l3.v6->nexthdr;
- if (l4_hdr != exthdr)
- ipv6_skip_exthdr(skb, exthdr - skb->data,
- &l4_proto_tmp, &frag_off);
- } else if (l3.v4->version == 4) {
- l4_proto_tmp = l3.v4->protocol;
- }
-
- *il4_proto = l4_proto_tmp;
-
- return 0;
-}
-
-static void hns3_set_l2l3l4_len(struct sk_buff *skb, u8 ol4_proto,
- u8 il4_proto, u32 *type_cs_vlan_tso,
- u32 *ol_type_vlan_len_msec)
-{
- union {
- struct iphdr *v4;
- struct ipv6hdr *v6;
- unsigned char *hdr;
- } l3;
- union {
- struct tcphdr *tcp;
- struct udphdr *udp;
- struct gre_base_hdr *gre;
- unsigned char *hdr;
- } l4;
- unsigned char *l2_hdr;
- u8 l4_proto = ol4_proto;
- u32 ol2_len;
- u32 ol3_len;
- u32 ol4_len;
- u32 l2_len;
- u32 l3_len;
-
- l3.hdr = skb_network_header(skb);
- l4.hdr = skb_transport_header(skb);
-
- /* compute L2 header size for normal packet, defined in 2 Bytes */
- l2_len = l3.hdr - skb->data;
- hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L2LEN_M,
- HNS3_TXD_L2LEN_S, l2_len >> 1);
-
- /* tunnel packet*/
- if (skb->encapsulation) {
- /* compute OL2 header size, defined in 2 Bytes */
- ol2_len = l2_len;
- hnae_set_field(*ol_type_vlan_len_msec,
- HNS3_TXD_L2LEN_M,
- HNS3_TXD_L2LEN_S, ol2_len >> 1);
-
- /* compute OL3 header size, defined in 4 Bytes */
- ol3_len = l4.hdr - l3.hdr;
- hnae_set_field(*ol_type_vlan_len_msec, HNS3_TXD_L3LEN_M,
- HNS3_TXD_L3LEN_S, ol3_len >> 2);
-
- /* MAC in UDP, MAC in GRE (0x6558)*/
- if ((ol4_proto == IPPROTO_UDP) || (ol4_proto == IPPROTO_GRE)) {
- /* switch MAC header ptr from outer to inner header.*/
- l2_hdr = skb_inner_mac_header(skb);
-
- /* compute OL4 header size, defined in 4 Bytes. */
- ol4_len = l2_hdr - l4.hdr;
- hnae_set_field(*ol_type_vlan_len_msec, HNS3_TXD_L4LEN_M,
- HNS3_TXD_L4LEN_S, ol4_len >> 2);
-
- /* switch IP header ptr from outer to inner header */
- l3.hdr = skb_inner_network_header(skb);
-
- /* compute inner l2 header size, defined in 2 Bytes. */
- l2_len = l3.hdr - l2_hdr;
- hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L2LEN_M,
- HNS3_TXD_L2LEN_S, l2_len >> 1);
- } else {
- /* skb packet types not supported by hardware,
- * txbd len fild doesn't be filled.
- */
- return;
- }
-
- /* switch L4 header pointer from outer to inner */
- l4.hdr = skb_inner_transport_header(skb);
-
- l4_proto = il4_proto;
- }
-
- /* compute inner(/normal) L3 header size, defined in 4 Bytes */
- l3_len = l4.hdr - l3.hdr;
- hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L3LEN_M,
- HNS3_TXD_L3LEN_S, l3_len >> 2);
-
- /* compute inner(/normal) L4 header size, defined in 4 Bytes */
- switch (l4_proto) {
- case IPPROTO_TCP:
- hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L4LEN_M,
- HNS3_TXD_L4LEN_S, l4.tcp->doff);
- break;
- case IPPROTO_SCTP:
- hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L4LEN_M,
- HNS3_TXD_L4LEN_S, (sizeof(struct sctphdr) >> 2));
- break;
- case IPPROTO_UDP:
- hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L4LEN_M,
- HNS3_TXD_L4LEN_S, (sizeof(struct udphdr) >> 2));
- break;
- default:
- /* skb packet types not supported by hardware,
- * txbd len fild doesn't be filled.
- */
- return;
- }
-}
-
-static int hns3_set_l3l4_type_csum(struct sk_buff *skb, u8 ol4_proto,
- u8 il4_proto, u32 *type_cs_vlan_tso,
- u32 *ol_type_vlan_len_msec)
-{
- union {
- struct iphdr *v4;
- struct ipv6hdr *v6;
- unsigned char *hdr;
- } l3;
- u32 l4_proto = ol4_proto;
-
- l3.hdr = skb_network_header(skb);
-
- /* define OL3 type and tunnel type(OL4).*/
- if (skb->encapsulation) {
- /* define outer network header type.*/
- if (skb->protocol == htons(ETH_P_IP)) {
- if (skb_is_gso(skb))
- hnae_set_field(*ol_type_vlan_len_msec,
- HNS3_TXD_OL3T_M, HNS3_TXD_OL3T_S,
- HNS3_OL3T_IPV4_CSUM);
- else
- hnae_set_field(*ol_type_vlan_len_msec,
- HNS3_TXD_OL3T_M, HNS3_TXD_OL3T_S,
- HNS3_OL3T_IPV4_NO_CSUM);
-
- } else if (skb->protocol == htons(ETH_P_IPV6)) {
- hnae_set_field(*ol_type_vlan_len_msec, HNS3_TXD_OL3T_M,
- HNS3_TXD_OL3T_S, HNS3_OL3T_IPV6);
- }
-
- /* define tunnel type(OL4).*/
- switch (l4_proto) {
- case IPPROTO_UDP:
- hnae_set_field(*ol_type_vlan_len_msec,
- HNS3_TXD_TUNTYPE_M,
- HNS3_TXD_TUNTYPE_S,
- HNS3_TUN_MAC_IN_UDP);
- break;
- case IPPROTO_GRE:
- hnae_set_field(*ol_type_vlan_len_msec,
- HNS3_TXD_TUNTYPE_M,
- HNS3_TXD_TUNTYPE_S,
- HNS3_TUN_NVGRE);
- break;
- default:
- /* drop the skb tunnel packet if hardware don't support,
- * because hardware can't calculate csum when TSO.
- */
- if (skb_is_gso(skb))
- return -EDOM;
-
- /* the stack computes the IP header already,
- * driver calculate l4 checksum when not TSO.
- */
- skb_checksum_help(skb);
- return 0;
- }
-
- l3.hdr = skb_inner_network_header(skb);
- l4_proto = il4_proto;
- }
-
- if (l3.v4->version == 4) {
- hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L3T_M,
- HNS3_TXD_L3T_S, HNS3_L3T_IPV4);
-
- /* the stack computes the IP header already, the only time we
- * need the hardware to recompute it is in the case of TSO.
- */
- if (skb_is_gso(skb))
- hnae_set_bit(*type_cs_vlan_tso, HNS3_TXD_L3CS_B, 1);
-
- hnae_set_bit(*type_cs_vlan_tso, HNS3_TXD_L4CS_B, 1);
- } else if (l3.v6->version == 6) {
- hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L3T_M,
- HNS3_TXD_L3T_S, HNS3_L3T_IPV6);
- hnae_set_bit(*type_cs_vlan_tso, HNS3_TXD_L4CS_B, 1);
- }
-
- switch (l4_proto) {
- case IPPROTO_TCP:
- hnae_set_field(*type_cs_vlan_tso,
- HNS3_TXD_L4T_M,
- HNS3_TXD_L4T_S,
- HNS3_L4T_TCP);
- break;
- case IPPROTO_UDP:
- hnae_set_field(*type_cs_vlan_tso,
- HNS3_TXD_L4T_M,
- HNS3_TXD_L4T_S,
- HNS3_L4T_UDP);
- break;
- case IPPROTO_SCTP:
- hnae_set_field(*type_cs_vlan_tso,
- HNS3_TXD_L4T_M,
- HNS3_TXD_L4T_S,
- HNS3_L4T_SCTP);
- break;
- default:
- /* drop the skb tunnel packet if hardware don't support,
- * because hardware can't calculate csum when TSO.
- */
- if (skb_is_gso(skb))
- return -EDOM;
-
- /* the stack computes the IP header already,
- * driver calculate l4 checksum when not TSO.
- */
- skb_checksum_help(skb);
- return 0;
- }
-
- return 0;
-}
-
-static void hns3_set_txbd_baseinfo(u16 *bdtp_fe_sc_vld_ra_ri, int frag_end)
-{
- /* Config bd buffer end */
- hnae_set_field(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_BDTYPE_M,
- HNS3_TXD_BDTYPE_M, 0);
- hnae_set_bit(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_FE_B, !!frag_end);
- hnae_set_bit(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_VLD_B, 1);
- hnae_set_field(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_SC_M, HNS3_TXD_SC_S, 0);
-}
-
-static int hns3_fill_desc(struct hns3_enet_ring *ring, void *priv,
- int size, dma_addr_t dma, int frag_end,
- enum hns_desc_type type)
-{
- struct hns3_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use];
- struct hns3_desc *desc = &ring->desc[ring->next_to_use];
- u32 ol_type_vlan_len_msec = 0;
- u16 bdtp_fe_sc_vld_ra_ri = 0;
- u32 type_cs_vlan_tso = 0;
- struct sk_buff *skb;
- u32 paylen = 0;
- u16 mss = 0;
- __be16 protocol;
- u8 ol4_proto;
- u8 il4_proto;
- int ret;
-
- /* The txbd's baseinfo of DESC_TYPE_PAGE & DESC_TYPE_SKB */
- desc_cb->priv = priv;
- desc_cb->length = size;
- desc_cb->dma = dma;
- desc_cb->type = type;
-
- /* now, fill the descriptor */
- desc->addr = cpu_to_le64(dma);
- desc->tx.send_size = cpu_to_le16((u16)size);
- hns3_set_txbd_baseinfo(&bdtp_fe_sc_vld_ra_ri, frag_end);
- desc->tx.bdtp_fe_sc_vld_ra_ri = cpu_to_le16(bdtp_fe_sc_vld_ra_ri);
-
- if (type == DESC_TYPE_SKB) {
- skb = (struct sk_buff *)priv;
- paylen = skb->len;
-
- if (skb->ip_summed == CHECKSUM_PARTIAL) {
- skb_reset_mac_len(skb);
- protocol = skb->protocol;
-
- /* vlan packet*/
- if (protocol == htons(ETH_P_8021Q)) {
- protocol = vlan_get_protocol(skb);
- skb->protocol = protocol;
- }
- ret = hns3_get_l4_protocol(skb, &ol4_proto, &il4_proto);
- if (ret)
- return ret;
- hns3_set_l2l3l4_len(skb, ol4_proto, il4_proto,
- &type_cs_vlan_tso,
- &ol_type_vlan_len_msec);
- ret = hns3_set_l3l4_type_csum(skb, ol4_proto, il4_proto,
- &type_cs_vlan_tso,
- &ol_type_vlan_len_msec);
- if (ret)
- return ret;
-
- ret = hns3_set_tso(skb, &paylen, &mss,
- &type_cs_vlan_tso);
- if (ret)
- return ret;
- }
-
- /* Set txbd */
- desc->tx.ol_type_vlan_len_msec =
- cpu_to_le32(ol_type_vlan_len_msec);
- desc->tx.type_cs_vlan_tso_len =
- cpu_to_le32(type_cs_vlan_tso);
- desc->tx.paylen = cpu_to_le32(paylen);
- desc->tx.mss = cpu_to_le16(mss);
- }
-
- /* move ring pointer to next.*/
- ring_ptr_move_fw(ring, next_to_use);
-
- return 0;
-}
-
-static int hns3_fill_desc_tso(struct hns3_enet_ring *ring, void *priv,
- int size, dma_addr_t dma, int frag_end,
- enum hns_desc_type type)
-{
- unsigned int frag_buf_num;
- unsigned int k;
- int sizeoflast;
- int ret;
-
- frag_buf_num = (size + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE;
- sizeoflast = size % HNS3_MAX_BD_SIZE;
- sizeoflast = sizeoflast ? sizeoflast : HNS3_MAX_BD_SIZE;
-
- /* When the frag size is bigger than hardware, split this frag */
- for (k = 0; k < frag_buf_num; k++) {
- ret = hns3_fill_desc(ring, priv,
- (k == frag_buf_num - 1) ?
- sizeoflast : HNS3_MAX_BD_SIZE,
- dma + HNS3_MAX_BD_SIZE * k,
- frag_end && (k == frag_buf_num - 1) ? 1 : 0,
- (type == DESC_TYPE_SKB && !k) ?
- DESC_TYPE_SKB : DESC_TYPE_PAGE);
- if (ret)
- return ret;
- }
-
- return 0;
-}
-
-static int hns3_nic_maybe_stop_tso(struct sk_buff **out_skb, int *bnum,
- struct hns3_enet_ring *ring)
-{
- struct sk_buff *skb = *out_skb;
- struct skb_frag_struct *frag;
- int bdnum_for_frag;
- int frag_num;
- int buf_num;
- int size;
- int i;
-
- size = skb_headlen(skb);
- buf_num = (size + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE;
-
- frag_num = skb_shinfo(skb)->nr_frags;
- for (i = 0; i < frag_num; i++) {
- frag = &skb_shinfo(skb)->frags[i];
- size = skb_frag_size(frag);
- bdnum_for_frag =
- (size + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE;
- if (bdnum_for_frag > HNS3_MAX_BD_PER_FRAG)
- return -ENOMEM;
-
- buf_num += bdnum_for_frag;
- }
-
- if (buf_num > ring_space(ring))
- return -EBUSY;
-
- *bnum = buf_num;
- return 0;
-}
-
-static int hns3_nic_maybe_stop_tx(struct sk_buff **out_skb, int *bnum,
- struct hns3_enet_ring *ring)
-{
- struct sk_buff *skb = *out_skb;
- int buf_num;
-
- /* No. of segments (plus a header) */
- buf_num = skb_shinfo(skb)->nr_frags + 1;
-
- if (buf_num > ring_space(ring))
- return -EBUSY;
-
- *bnum = buf_num;
-
- return 0;
-}
-
-static void hns_nic_dma_unmap(struct hns3_enet_ring *ring, int next_to_use_orig)
-{
- struct device *dev = ring_to_dev(ring);
- unsigned int i;
-
- for (i = 0; i < ring->desc_num; i++) {
- /* check if this is where we started */
- if (ring->next_to_use == next_to_use_orig)
- break;
-
- /* unmap the descriptor dma address */
- if (ring->desc_cb[ring->next_to_use].type == DESC_TYPE_SKB)
- dma_unmap_single(dev,
- ring->desc_cb[ring->next_to_use].dma,
- ring->desc_cb[ring->next_to_use].length,
- DMA_TO_DEVICE);
- else
- dma_unmap_page(dev,
- ring->desc_cb[ring->next_to_use].dma,
- ring->desc_cb[ring->next_to_use].length,
- DMA_TO_DEVICE);
-
- /* rollback one */
- ring_ptr_move_bw(ring, next_to_use);
- }
-}
-
-netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb, struct net_device *netdev)
-{
- struct hns3_nic_priv *priv = netdev_priv(netdev);
- struct hns3_nic_ring_data *ring_data =
- &tx_ring_data(priv, skb->queue_mapping);
- struct hns3_enet_ring *ring = ring_data->ring;
- struct device *dev = priv->dev;
- struct netdev_queue *dev_queue;
- struct skb_frag_struct *frag;
- int next_to_use_head;
- int next_to_use_frag;
- dma_addr_t dma;
- int buf_num;
- int seg_num;
- int size;
- int ret;
- int i;
-
- /* Prefetch the data used later */
- prefetch(skb->data);
-
- switch (priv->ops.maybe_stop_tx(&skb, &buf_num, ring)) {
- case -EBUSY:
- u64_stats_update_begin(&ring->syncp);
- ring->stats.tx_busy++;
- u64_stats_update_end(&ring->syncp);
-
- goto out_net_tx_busy;
- case -ENOMEM:
- u64_stats_update_begin(&ring->syncp);
- ring->stats.sw_err_cnt++;
- u64_stats_update_end(&ring->syncp);
- netdev_err(netdev, "no memory to xmit!\n");
-
- goto out_err_tx_ok;
- default:
- break;
- }
-
- /* No. of segments (plus a header) */
- seg_num = skb_shinfo(skb)->nr_frags + 1;
- /* Fill the first part */
- size = skb_headlen(skb);
-
- next_to_use_head = ring->next_to_use;
-
- dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE);
- if (dma_mapping_error(dev, dma)) {
- netdev_err(netdev, "TX head DMA map failed\n");
- ring->stats.sw_err_cnt++;
- goto out_err_tx_ok;
- }
-
- ret = priv->ops.fill_desc(ring, skb, size, dma, seg_num == 1 ? 1 : 0,
- DESC_TYPE_SKB);
- if (ret)
- goto head_dma_map_err;
-
- next_to_use_frag = ring->next_to_use;
- /* Fill the fragments */
- for (i = 1; i < seg_num; i++) {
- frag = &skb_shinfo(skb)->frags[i - 1];
- size = skb_frag_size(frag);
- dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE);
- if (dma_mapping_error(dev, dma)) {
- netdev_err(netdev, "TX frag(%d) DMA map failed\n", i);
- ring->stats.sw_err_cnt++;
- goto frag_dma_map_err;
- }
- ret = priv->ops.fill_desc(ring, skb_frag_page(frag), size, dma,
- seg_num - 1 == i ? 1 : 0,
- DESC_TYPE_PAGE);
-
- if (ret)
- goto frag_dma_map_err;
- }
-
- /* Complete translate all packets */
- dev_queue = netdev_get_tx_queue(netdev, ring_data->queue_index);
- netdev_tx_sent_queue(dev_queue, skb->len);
-
- wmb(); /* Commit all data before submit */
-
- hnae_queue_xmit(ring->tqp, buf_num);
-
- return NETDEV_TX_OK;
-
-frag_dma_map_err:
- hns_nic_dma_unmap(ring, next_to_use_frag);
-
-head_dma_map_err:
- hns_nic_dma_unmap(ring, next_to_use_head);
-
-out_err_tx_ok:
- dev_kfree_skb_any(skb);
- return NETDEV_TX_OK;
-
-out_net_tx_busy:
- netif_stop_subqueue(netdev, ring_data->queue_index);
- smp_mb(); /* Commit all data before submit */
-
- return NETDEV_TX_BUSY;
-}
-
-static int hns3_nic_net_set_mac_address(struct net_device *netdev, void *p)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
- struct sockaddr *mac_addr = p;
- int ret;
-
- if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data))
- return -EADDRNOTAVAIL;
-
- ret = h->ae_algo->ops->set_mac_addr(h, mac_addr->sa_data);
- if (ret) {
- netdev_err(netdev, "set_mac_address fail, ret=%d!\n", ret);
- return ret;
- }
-
- ether_addr_copy(netdev->dev_addr, mac_addr->sa_data);
-
- return 0;
-}
-
-static int hns3_nic_set_features(struct net_device *netdev,
- netdev_features_t features)
-{
- struct hns3_nic_priv *priv = netdev_priv(netdev);
-
- if (features & (NETIF_F_TSO | NETIF_F_TSO6)) {
- priv->ops.fill_desc = hns3_fill_desc_tso;
- priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tso;
- } else {
- priv->ops.fill_desc = hns3_fill_desc;
- priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tx;
- }
-
- netdev->features = features;
- return 0;
-}
-
-static void
-hns3_nic_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats)
-{
- struct hns3_nic_priv *priv = netdev_priv(netdev);
- int queue_num = priv->ae_handle->kinfo.num_tqps;
- struct hns3_enet_ring *ring;
- unsigned int start;
- unsigned int idx;
- u64 tx_bytes = 0;
- u64 rx_bytes = 0;
- u64 tx_pkts = 0;
- u64 rx_pkts = 0;
-
- for (idx = 0; idx < queue_num; idx++) {
- /* fetch the tx stats */
- ring = priv->ring_data[idx].ring;
- do {
- start = u64_stats_fetch_begin_irq(&ring->syncp);
- tx_bytes += ring->stats.tx_bytes;
- tx_pkts += ring->stats.tx_pkts;
- } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
-
- /* fetch the rx stats */
- ring = priv->ring_data[idx + queue_num].ring;
- do {
- start = u64_stats_fetch_begin_irq(&ring->syncp);
- rx_bytes += ring->stats.rx_bytes;
- rx_pkts += ring->stats.rx_pkts;
- } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
- }
-
- stats->tx_bytes = tx_bytes;
- stats->tx_packets = tx_pkts;
- stats->rx_bytes = rx_bytes;
- stats->rx_packets = rx_pkts;
-
- stats->rx_errors = netdev->stats.rx_errors;
- stats->multicast = netdev->stats.multicast;
- stats->rx_length_errors = netdev->stats.rx_length_errors;
- stats->rx_crc_errors = netdev->stats.rx_crc_errors;
- stats->rx_missed_errors = netdev->stats.rx_missed_errors;
-
- stats->tx_errors = netdev->stats.tx_errors;
- stats->rx_dropped = netdev->stats.rx_dropped;
- stats->tx_dropped = netdev->stats.tx_dropped;
- stats->collisions = netdev->stats.collisions;
- stats->rx_over_errors = netdev->stats.rx_over_errors;
- stats->rx_frame_errors = netdev->stats.rx_frame_errors;
- stats->rx_fifo_errors = netdev->stats.rx_fifo_errors;
- stats->tx_aborted_errors = netdev->stats.tx_aborted_errors;
- stats->tx_carrier_errors = netdev->stats.tx_carrier_errors;
- stats->tx_fifo_errors = netdev->stats.tx_fifo_errors;
- stats->tx_heartbeat_errors = netdev->stats.tx_heartbeat_errors;
- stats->tx_window_errors = netdev->stats.tx_window_errors;
- stats->rx_compressed = netdev->stats.rx_compressed;
- stats->tx_compressed = netdev->stats.tx_compressed;
-}
-
-static void hns3_add_tunnel_port(struct net_device *netdev, u16 port,
- enum hns3_udp_tnl_type type)
-{
- struct hns3_nic_priv *priv = netdev_priv(netdev);
- struct hns3_udp_tunnel *udp_tnl = &priv->udp_tnl[type];
- struct hnae3_handle *h = priv->ae_handle;
-
- if (udp_tnl->used && udp_tnl->dst_port == port) {
- udp_tnl->used++;
- return;
- }
-
- if (udp_tnl->used) {
- netdev_warn(netdev,
- "UDP tunnel [%d], port [%d] offload\n", type, port);
- return;
- }
-
- udp_tnl->dst_port = port;
- udp_tnl->used = 1;
- /* TBD send command to hardware to add port */
- if (h->ae_algo->ops->add_tunnel_udp)
- h->ae_algo->ops->add_tunnel_udp(h, port);
-}
-
-static void hns3_del_tunnel_port(struct net_device *netdev, u16 port,
- enum hns3_udp_tnl_type type)
-{
- struct hns3_nic_priv *priv = netdev_priv(netdev);
- struct hns3_udp_tunnel *udp_tnl = &priv->udp_tnl[type];
- struct hnae3_handle *h = priv->ae_handle;
-
- if (!udp_tnl->used || udp_tnl->dst_port != port) {
- netdev_warn(netdev,
- "Invalid UDP tunnel port %d\n", port);
- return;
- }
-
- udp_tnl->used--;
- if (udp_tnl->used)
- return;
-
- udp_tnl->dst_port = 0;
- /* TBD send command to hardware to del port */
- if (h->ae_algo->ops->del_tunnel_udp)
- h->ae_algo->ops->del_tunnel_udp(h, port);
-}
-
-/* hns3_nic_udp_tunnel_add - Get notifiacetion about UDP tunnel ports
- * @netdev: This physical ports's netdev
- * @ti: Tunnel information
- */
-static void hns3_nic_udp_tunnel_add(struct net_device *netdev,
- struct udp_tunnel_info *ti)
-{
- u16 port_n = ntohs(ti->port);
-
- switch (ti->type) {
- case UDP_TUNNEL_TYPE_VXLAN:
- hns3_add_tunnel_port(netdev, port_n, HNS3_UDP_TNL_VXLAN);
- break;
- case UDP_TUNNEL_TYPE_GENEVE:
- hns3_add_tunnel_port(netdev, port_n, HNS3_UDP_TNL_GENEVE);
- break;
- default:
- netdev_err(netdev, "unsupported tunnel type %d\n", ti->type);
- break;
- }
-}
-
-static void hns3_nic_udp_tunnel_del(struct net_device *netdev,
- struct udp_tunnel_info *ti)
-{
- u16 port_n = ntohs(ti->port);
-
- switch (ti->type) {
- case UDP_TUNNEL_TYPE_VXLAN:
- hns3_del_tunnel_port(netdev, port_n, HNS3_UDP_TNL_VXLAN);
- break;
- case UDP_TUNNEL_TYPE_GENEVE:
- hns3_del_tunnel_port(netdev, port_n, HNS3_UDP_TNL_GENEVE);
- break;
- default:
- break;
- }
-}
-
-static int hns3_setup_tc(struct net_device *netdev, void *type_data)
-{
- struct tc_mqprio_qopt_offload *mqprio_qopt = type_data;
- struct hnae3_handle *h = hns3_get_handle(netdev);
- struct hnae3_knic_private_info *kinfo = &h->kinfo;
- u8 *prio_tc = mqprio_qopt->qopt.prio_tc_map;
- u8 tc = mqprio_qopt->qopt.num_tc;
- u16 mode = mqprio_qopt->mode;
- u8 hw = mqprio_qopt->qopt.hw;
- bool if_running;
- unsigned int i;
- int ret;
-
- if (!((hw == TC_MQPRIO_HW_OFFLOAD_TCS &&
- mode == TC_MQPRIO_MODE_CHANNEL) || (!hw && tc == 0)))
- return -EOPNOTSUPP;
-
- if (tc > HNAE3_MAX_TC)
- return -EINVAL;
-
- if (!netdev)
- return -EINVAL;
-
- if_running = netif_running(netdev);
- if (if_running) {
- hns3_nic_net_stop(netdev);
- msleep(100);
- }
-
- ret = (kinfo->dcb_ops && kinfo->dcb_ops->setup_tc) ?
- kinfo->dcb_ops->setup_tc(h, tc, prio_tc) : -EOPNOTSUPP;
- if (ret)
- goto out;
-
- if (tc <= 1) {
- netdev_reset_tc(netdev);
- } else {
- ret = netdev_set_num_tc(netdev, tc);
- if (ret)
- goto out;
-
- for (i = 0; i < HNAE3_MAX_TC; i++) {
- if (!kinfo->tc_info[i].enable)
- continue;
-
- netdev_set_tc_queue(netdev,
- kinfo->tc_info[i].tc,
- kinfo->tc_info[i].tqp_count,
- kinfo->tc_info[i].tqp_offset);
- }
- }
-
- ret = hns3_nic_set_real_num_queue(netdev);
-
-out:
- if (if_running)
- hns3_nic_net_open(netdev);
-
- return ret;
-}
-
-static int hns3_nic_setup_tc(struct net_device *dev, enum tc_setup_type type,
- void *type_data)
-{
- if (type != TC_SETUP_QDISC_MQPRIO)
- return -EOPNOTSUPP;
-
- return hns3_setup_tc(dev, type_data);
-}
-
-static int hns3_vlan_rx_add_vid(struct net_device *netdev,
- __be16 proto, u16 vid)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
- int ret = -EIO;
-
- if (h->ae_algo->ops->set_vlan_filter)
- ret = h->ae_algo->ops->set_vlan_filter(h, proto, vid, false);
-
- return ret;
-}
-
-static int hns3_vlan_rx_kill_vid(struct net_device *netdev,
- __be16 proto, u16 vid)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
- int ret = -EIO;
-
- if (h->ae_algo->ops->set_vlan_filter)
- ret = h->ae_algo->ops->set_vlan_filter(h, proto, vid, true);
-
- return ret;
-}
-
-static int hns3_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan,
- u8 qos, __be16 vlan_proto)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
- int ret = -EIO;
-
- if (h->ae_algo->ops->set_vf_vlan_filter)
- ret = h->ae_algo->ops->set_vf_vlan_filter(h, vf, vlan,
- qos, vlan_proto);
-
- return ret;
-}
-
-static int hns3_nic_change_mtu(struct net_device *netdev, int new_mtu)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
- bool if_running = netif_running(netdev);
- int ret;
-
- if (!h->ae_algo->ops->set_mtu)
- return -EOPNOTSUPP;
-
- /* if this was called with netdev up then bring netdevice down */
- if (if_running) {
- (void)hns3_nic_net_stop(netdev);
- msleep(100);
- }
-
- ret = h->ae_algo->ops->set_mtu(h, new_mtu);
- if (ret) {
- netdev_err(netdev, "failed to change MTU in hardware %d\n",
- ret);
- return ret;
- }
-
- /* if the netdev was running earlier, bring it up again */
- if (if_running && hns3_nic_net_open(netdev))
- ret = -EINVAL;
-
- return ret;
-}
-
-static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev)
-{
- struct hns3_nic_priv *priv = netdev_priv(ndev);
- struct hns3_enet_ring *tx_ring = NULL;
- int timeout_queue = 0;
- int hw_head, hw_tail;
- int i;
-
- /* Find the stopped queue the same way the stack does */
- for (i = 0; i < ndev->real_num_tx_queues; i++) {
- struct netdev_queue *q;
- unsigned long trans_start;
-
- q = netdev_get_tx_queue(ndev, i);
- trans_start = q->trans_start;
- if (netif_xmit_stopped(q) &&
- time_after(jiffies,
- (trans_start + ndev->watchdog_timeo))) {
- timeout_queue = i;
- break;
- }
- }
-
- if (i == ndev->num_tx_queues) {
- netdev_info(ndev,
- "no netdev TX timeout queue found, timeout count: %llu\n",
- priv->tx_timeout_count);
- return false;
- }
-
- tx_ring = priv->ring_data[timeout_queue].ring;
-
- hw_head = readl_relaxed(tx_ring->tqp->io_base +
- HNS3_RING_TX_RING_HEAD_REG);
- hw_tail = readl_relaxed(tx_ring->tqp->io_base +
- HNS3_RING_TX_RING_TAIL_REG);
- netdev_info(ndev,
- "tx_timeout count: %llu, queue id: %d, SW_NTU: 0x%x, SW_NTC: 0x%x, HW_HEAD: 0x%x, HW_TAIL: 0x%x, INT: 0x%x\n",
- priv->tx_timeout_count,
- timeout_queue,
- tx_ring->next_to_use,
- tx_ring->next_to_clean,
- hw_head,
- hw_tail,
- readl(tx_ring->tqp_vector->mask_addr));
-
- return true;
-}
-
-static void hns3_nic_net_timeout(struct net_device *ndev)
-{
- struct hns3_nic_priv *priv = netdev_priv(ndev);
- unsigned long last_reset_time = priv->last_reset_time;
- struct hnae3_handle *h = priv->ae_handle;
-
- if (!hns3_get_tx_timeo_queue_info(ndev))
- return;
-
- priv->tx_timeout_count++;
-
- /* This timeout is far away enough from last timeout,
- * if timeout again,set the reset type to PF reset
- */
- if (time_after(jiffies, (last_reset_time + 20 * HZ)))
- priv->reset_level = HNAE3_FUNC_RESET;
-
- /* Don't do any new action before the next timeout */
- else if (time_before(jiffies, (last_reset_time + ndev->watchdog_timeo)))
- return;
-
- priv->last_reset_time = jiffies;
-
- if (h->ae_algo->ops->reset_event)
- h->ae_algo->ops->reset_event(h, priv->reset_level);
-
- priv->reset_level++;
- if (priv->reset_level > HNAE3_GLOBAL_RESET)
- priv->reset_level = HNAE3_GLOBAL_RESET;
-}
-
-static const struct net_device_ops hns3_nic_netdev_ops = {
- .ndo_open = hns3_nic_net_open,
- .ndo_stop = hns3_nic_net_stop,
- .ndo_start_xmit = hns3_nic_net_xmit,
- .ndo_tx_timeout = hns3_nic_net_timeout,
- .ndo_set_mac_address = hns3_nic_net_set_mac_address,
- .ndo_change_mtu = hns3_nic_change_mtu,
- .ndo_set_features = hns3_nic_set_features,
- .ndo_get_stats64 = hns3_nic_get_stats64,
- .ndo_setup_tc = hns3_nic_setup_tc,
- .ndo_set_rx_mode = hns3_nic_set_rx_mode,
- .ndo_udp_tunnel_add = hns3_nic_udp_tunnel_add,
- .ndo_udp_tunnel_del = hns3_nic_udp_tunnel_del,
- .ndo_vlan_rx_add_vid = hns3_vlan_rx_add_vid,
- .ndo_vlan_rx_kill_vid = hns3_vlan_rx_kill_vid,
- .ndo_set_vf_vlan = hns3_ndo_set_vf_vlan,
-};
-
-/* hns3_probe - Device initialization routine
- * @pdev: PCI device information struct
- * @ent: entry in hns3_pci_tbl
- *
- * hns3_probe initializes a PF identified by a pci_dev structure.
- * The OS initialization, configuring of the PF private structure,
- * and a hardware reset occur.
- *
- * Returns 0 on success, negative on failure
- */
-static int hns3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
-{
- struct hnae3_ae_dev *ae_dev;
- int ret;
-
- ae_dev = devm_kzalloc(&pdev->dev, sizeof(*ae_dev),
- GFP_KERNEL);
- if (!ae_dev) {
- ret = -ENOMEM;
- return ret;
- }
-
- ae_dev->pdev = pdev;
- ae_dev->flag = ent->driver_data;
- ae_dev->dev_type = HNAE3_DEV_KNIC;
- pci_set_drvdata(pdev, ae_dev);
-
- return hnae3_register_ae_dev(ae_dev);
-}
-
-/* hns3_remove - Device removal routine
- * @pdev: PCI device information struct
- */
-static void hns3_remove(struct pci_dev *pdev)
-{
- struct hnae3_ae_dev *ae_dev = pci_get_drvdata(pdev);
-
- hnae3_unregister_ae_dev(ae_dev);
-
- devm_kfree(&pdev->dev, ae_dev);
-
- pci_set_drvdata(pdev, NULL);
-}
-
-static struct pci_driver hns3_driver = {
- .name = hns3_driver_name,
- .id_table = hns3_pci_tbl,
- .probe = hns3_probe,
- .remove = hns3_remove,
-};
-
-/* set default feature to hns3 */
-static void hns3_set_default_feature(struct net_device *netdev)
-{
- netdev->priv_flags |= IFF_UNICAST_FLT;
-
- netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
- NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
- NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
- NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
- NETIF_F_GSO_UDP_TUNNEL_CSUM;
-
- netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
-
- netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
-
- netdev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
- NETIF_F_HW_VLAN_CTAG_FILTER |
- NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
- NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
- NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
- NETIF_F_GSO_UDP_TUNNEL_CSUM;
-
- netdev->vlan_features |=
- NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM |
- NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO |
- NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
- NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
- NETIF_F_GSO_UDP_TUNNEL_CSUM;
-
- netdev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
- NETIF_F_HW_VLAN_CTAG_FILTER |
- NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
- NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
- NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
- NETIF_F_GSO_UDP_TUNNEL_CSUM;
-}
-
-static int hns3_alloc_buffer(struct hns3_enet_ring *ring,
- struct hns3_desc_cb *cb)
-{
- unsigned int order = hnae_page_order(ring);
- struct page *p;
-
- p = dev_alloc_pages(order);
- if (!p)
- return -ENOMEM;
-
- cb->priv = p;
- cb->page_offset = 0;
- cb->reuse_flag = 0;
- cb->buf = page_address(p);
- cb->length = hnae_page_size(ring);
- cb->type = DESC_TYPE_PAGE;
-
- return 0;
-}
-
-static void hns3_free_buffer(struct hns3_enet_ring *ring,
- struct hns3_desc_cb *cb)
-{
- if (cb->type == DESC_TYPE_SKB)
- dev_kfree_skb_any((struct sk_buff *)cb->priv);
- else if (!HNAE3_IS_TX_RING(ring))
- put_page((struct page *)cb->priv);
- memset(cb, 0, sizeof(*cb));
-}
-
-static int hns3_map_buffer(struct hns3_enet_ring *ring, struct hns3_desc_cb *cb)
-{
- cb->dma = dma_map_page(ring_to_dev(ring), cb->priv, 0,
- cb->length, ring_to_dma_dir(ring));
-
- if (dma_mapping_error(ring_to_dev(ring), cb->dma))
- return -EIO;
-
- return 0;
-}
-
-static void hns3_unmap_buffer(struct hns3_enet_ring *ring,
- struct hns3_desc_cb *cb)
-{
- if (cb->type == DESC_TYPE_SKB)
- dma_unmap_single(ring_to_dev(ring), cb->dma, cb->length,
- ring_to_dma_dir(ring));
- else
- dma_unmap_page(ring_to_dev(ring), cb->dma, cb->length,
- ring_to_dma_dir(ring));
-}
-
-static void hns3_buffer_detach(struct hns3_enet_ring *ring, int i)
-{
- hns3_unmap_buffer(ring, &ring->desc_cb[i]);
- ring->desc[i].addr = 0;
-}
-
-static void hns3_free_buffer_detach(struct hns3_enet_ring *ring, int i)
-{
- struct hns3_desc_cb *cb = &ring->desc_cb[i];
-
- if (!ring->desc_cb[i].dma)
- return;
-
- hns3_buffer_detach(ring, i);
- hns3_free_buffer(ring, cb);
-}
-
-static void hns3_free_buffers(struct hns3_enet_ring *ring)
-{
- int i;
-
- for (i = 0; i < ring->desc_num; i++)
- hns3_free_buffer_detach(ring, i);
-}
-
-/* free desc along with its attached buffer */
-static void hns3_free_desc(struct hns3_enet_ring *ring)
-{
- hns3_free_buffers(ring);
-
- dma_unmap_single(ring_to_dev(ring), ring->desc_dma_addr,
- ring->desc_num * sizeof(ring->desc[0]),
- DMA_BIDIRECTIONAL);
- ring->desc_dma_addr = 0;
- kfree(ring->desc);
- ring->desc = NULL;
-}
-
-static int hns3_alloc_desc(struct hns3_enet_ring *ring)
-{
- int size = ring->desc_num * sizeof(ring->desc[0]);
-
- ring->desc = kzalloc(size, GFP_KERNEL);
- if (!ring->desc)
- return -ENOMEM;
-
- ring->desc_dma_addr = dma_map_single(ring_to_dev(ring), ring->desc,
- size, DMA_BIDIRECTIONAL);
- if (dma_mapping_error(ring_to_dev(ring), ring->desc_dma_addr)) {
- ring->desc_dma_addr = 0;
- kfree(ring->desc);
- ring->desc = NULL;
- return -ENOMEM;
- }
-
- return 0;
-}
-
-static int hns3_reserve_buffer_map(struct hns3_enet_ring *ring,
- struct hns3_desc_cb *cb)
-{
- int ret;
-
- ret = hns3_alloc_buffer(ring, cb);
- if (ret)
- goto out;
-
- ret = hns3_map_buffer(ring, cb);
- if (ret)
- goto out_with_buf;
-
- return 0;
-
-out_with_buf:
- hns3_free_buffer(ring, cb);
-out:
- return ret;
-}
-
-static int hns3_alloc_buffer_attach(struct hns3_enet_ring *ring, int i)
-{
- int ret = hns3_reserve_buffer_map(ring, &ring->desc_cb[i]);
-
- if (ret)
- return ret;
-
- ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma);
-
- return 0;
-}
-
-/* Allocate memory for raw pkg, and map with dma */
-static int hns3_alloc_ring_buffers(struct hns3_enet_ring *ring)
-{
- int i, j, ret;
-
- for (i = 0; i < ring->desc_num; i++) {
- ret = hns3_alloc_buffer_attach(ring, i);
- if (ret)
- goto out_buffer_fail;
- }
-
- return 0;
-
-out_buffer_fail:
- for (j = i - 1; j >= 0; j--)
- hns3_free_buffer_detach(ring, j);
- return ret;
-}
-
-/* detach a in-used buffer and replace with a reserved one */
-static void hns3_replace_buffer(struct hns3_enet_ring *ring, int i,
- struct hns3_desc_cb *res_cb)
-{
- hns3_unmap_buffer(ring, &ring->desc_cb[i]);
- ring->desc_cb[i] = *res_cb;
- ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma);
-}
-
-static void hns3_reuse_buffer(struct hns3_enet_ring *ring, int i)
-{
- ring->desc_cb[i].reuse_flag = 0;
- ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma
- + ring->desc_cb[i].page_offset);
-}
-
-static void hns3_nic_reclaim_one_desc(struct hns3_enet_ring *ring, int *bytes,
- int *pkts)
-{
- struct hns3_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean];
-
- (*pkts) += (desc_cb->type == DESC_TYPE_SKB);
- (*bytes) += desc_cb->length;
- /* desc_cb will be cleaned, after hnae_free_buffer_detach*/
- hns3_free_buffer_detach(ring, ring->next_to_clean);
-
- ring_ptr_move_fw(ring, next_to_clean);
-}
-
-static int is_valid_clean_head(struct hns3_enet_ring *ring, int h)
-{
- int u = ring->next_to_use;
- int c = ring->next_to_clean;
-
- if (unlikely(h > ring->desc_num))
- return 0;
-
- return u > c ? (h > c && h <= u) : (h > c || h <= u);
-}
-
-bool hns3_clean_tx_ring(struct hns3_enet_ring *ring, int budget)
-{
- struct net_device *netdev = ring->tqp->handle->kinfo.netdev;
- struct netdev_queue *dev_queue;
- int bytes, pkts;
- int head;
-
- head = readl_relaxed(ring->tqp->io_base + HNS3_RING_TX_RING_HEAD_REG);
- rmb(); /* Make sure head is ready before touch any data */
-
- if (is_ring_empty(ring) || head == ring->next_to_clean)
- return true; /* no data to poll */
-
- if (!is_valid_clean_head(ring, head)) {
- netdev_err(netdev, "wrong head (%d, %d-%d)\n", head,
- ring->next_to_use, ring->next_to_clean);
-
- u64_stats_update_begin(&ring->syncp);
- ring->stats.io_err_cnt++;
- u64_stats_update_end(&ring->syncp);
- return true;
- }
-
- bytes = 0;
- pkts = 0;
- while (head != ring->next_to_clean && budget) {
- hns3_nic_reclaim_one_desc(ring, &bytes, &pkts);
- /* Issue prefetch for next Tx descriptor */
- prefetch(&ring->desc_cb[ring->next_to_clean]);
- budget--;
- }
-
- ring->tqp_vector->tx_group.total_bytes += bytes;
- ring->tqp_vector->tx_group.total_packets += pkts;
-
- u64_stats_update_begin(&ring->syncp);
- ring->stats.tx_bytes += bytes;
- ring->stats.tx_pkts += pkts;
- u64_stats_update_end(&ring->syncp);
-
- dev_queue = netdev_get_tx_queue(netdev, ring->tqp->tqp_index);
- netdev_tx_completed_queue(dev_queue, pkts, bytes);
-
- if (unlikely(pkts && netif_carrier_ok(netdev) &&
- (ring_space(ring) > HNS3_MAX_BD_PER_PKT))) {
- /* Make sure that anybody stopping the queue after this
- * sees the new next_to_clean.
- */
- smp_mb();
- if (netif_tx_queue_stopped(dev_queue)) {
- netif_tx_wake_queue(dev_queue);
- ring->stats.restart_queue++;
- }
- }
-
- return !!budget;
-}
-
-static int hns3_desc_unused(struct hns3_enet_ring *ring)
-{
- int ntc = ring->next_to_clean;
- int ntu = ring->next_to_use;
-
- return ((ntc >= ntu) ? 0 : ring->desc_num) + ntc - ntu;
-}
-
-static void
-hns3_nic_alloc_rx_buffers(struct hns3_enet_ring *ring, int cleand_count)
-{
- struct hns3_desc_cb *desc_cb;
- struct hns3_desc_cb res_cbs;
- int i, ret;
-
- for (i = 0; i < cleand_count; i++) {
- desc_cb = &ring->desc_cb[ring->next_to_use];
- if (desc_cb->reuse_flag) {
- u64_stats_update_begin(&ring->syncp);
- ring->stats.reuse_pg_cnt++;
- u64_stats_update_end(&ring->syncp);
-
- hns3_reuse_buffer(ring, ring->next_to_use);
- } else {
- ret = hns3_reserve_buffer_map(ring, &res_cbs);
- if (ret) {
- u64_stats_update_begin(&ring->syncp);
- ring->stats.sw_err_cnt++;
- u64_stats_update_end(&ring->syncp);
-
- netdev_err(ring->tqp->handle->kinfo.netdev,
- "hnae reserve buffer map failed.\n");
- break;
- }
- hns3_replace_buffer(ring, ring->next_to_use, &res_cbs);
- }
-
- ring_ptr_move_fw(ring, next_to_use);
- }
-
- wmb(); /* Make all data has been write before submit */
- writel_relaxed(i, ring->tqp->io_base + HNS3_RING_RX_RING_HEAD_REG);
-}
-
-/* hns3_nic_get_headlen - determine size of header for LRO/GRO
- * @data: pointer to the start of the headers
- * @max: total length of section to find headers in
- *
- * This function is meant to determine the length of headers that will
- * be recognized by hardware for LRO, GRO, and RSC offloads. The main
- * motivation of doing this is to only perform one pull for IPv4 TCP
- * packets so that we can do basic things like calculating the gso_size
- * based on the average data per packet.
- */
-static unsigned int hns3_nic_get_headlen(unsigned char *data, u32 flag,
- unsigned int max_size)
-{
- unsigned char *network;
- u8 hlen;
-
- /* This should never happen, but better safe than sorry */
- if (max_size < ETH_HLEN)
- return max_size;
-
- /* Initialize network frame pointer */
- network = data;
-
- /* Set first protocol and move network header forward */
- network += ETH_HLEN;
-
- /* Handle any vlan tag if present */
- if (hnae_get_field(flag, HNS3_RXD_VLAN_M, HNS3_RXD_VLAN_S)
- == HNS3_RX_FLAG_VLAN_PRESENT) {
- if ((typeof(max_size))(network - data) > (max_size - VLAN_HLEN))
- return max_size;
-
- network += VLAN_HLEN;
- }
-
- /* Handle L3 protocols */
- if (hnae_get_field(flag, HNS3_RXD_L3ID_M, HNS3_RXD_L3ID_S)
- == HNS3_RX_FLAG_L3ID_IPV4) {
- if ((typeof(max_size))(network - data) >
- (max_size - sizeof(struct iphdr)))
- return max_size;
-
- /* Access ihl as a u8 to avoid unaligned access on ia64 */
- hlen = (network[0] & 0x0F) << 2;
-
- /* Verify hlen meets minimum size requirements */
- if (hlen < sizeof(struct iphdr))
- return network - data;
-
- /* Record next protocol if header is present */
- } else if (hnae_get_field(flag, HNS3_RXD_L3ID_M, HNS3_RXD_L3ID_S)
- == HNS3_RX_FLAG_L3ID_IPV6) {
- if ((typeof(max_size))(network - data) >
- (max_size - sizeof(struct ipv6hdr)))
- return max_size;
-
- /* Record next protocol */
- hlen = sizeof(struct ipv6hdr);
- } else {
- return network - data;
- }
-
- /* Relocate pointer to start of L4 header */
- network += hlen;
-
- /* Finally sort out TCP/UDP */
- if (hnae_get_field(flag, HNS3_RXD_L4ID_M, HNS3_RXD_L4ID_S)
- == HNS3_RX_FLAG_L4ID_TCP) {
- if ((typeof(max_size))(network - data) >
- (max_size - sizeof(struct tcphdr)))
- return max_size;
-
- /* Access doff as a u8 to avoid unaligned access on ia64 */
- hlen = (network[12] & 0xF0) >> 2;
-
- /* Verify hlen meets minimum size requirements */
- if (hlen < sizeof(struct tcphdr))
- return network - data;
-
- network += hlen;
- } else if (hnae_get_field(flag, HNS3_RXD_L4ID_M, HNS3_RXD_L4ID_S)
- == HNS3_RX_FLAG_L4ID_UDP) {
- if ((typeof(max_size))(network - data) >
- (max_size - sizeof(struct udphdr)))
- return max_size;
-
- network += sizeof(struct udphdr);
- }
-
- /* If everything has gone correctly network should be the
- * data section of the packet and will be the end of the header.
- * If not then it probably represents the end of the last recognized
- * header.
- */
- if ((typeof(max_size))(network - data) < max_size)
- return network - data;
- else
- return max_size;
-}
-
-static void hns3_nic_reuse_page(struct sk_buff *skb, int i,
- struct hns3_enet_ring *ring, int pull_len,
- struct hns3_desc_cb *desc_cb)
-{
- struct hns3_desc *desc;
- int truesize, size;
- int last_offset;
- bool twobufs;
-
- twobufs = ((PAGE_SIZE < 8192) &&
- hnae_buf_size(ring) == HNS3_BUFFER_SIZE_2048);
-
- desc = &ring->desc[ring->next_to_clean];
- size = le16_to_cpu(desc->rx.size);
-
- if (twobufs) {
- truesize = hnae_buf_size(ring);
- } else {
- truesize = ALIGN(size, L1_CACHE_BYTES);
- last_offset = hnae_page_size(ring) - hnae_buf_size(ring);
- }
-
- skb_add_rx_frag(skb, i, desc_cb->priv, desc_cb->page_offset + pull_len,
- size - pull_len, truesize - pull_len);
-
- /* Avoid re-using remote pages,flag default unreuse */
- if (unlikely(page_to_nid(desc_cb->priv) != numa_node_id()))
- return;
-
- if (twobufs) {
- /* If we are only owner of page we can reuse it */
- if (likely(page_count(desc_cb->priv) == 1)) {
- /* Flip page offset to other buffer */
- desc_cb->page_offset ^= truesize;
-
- desc_cb->reuse_flag = 1;
- /* bump ref count on page before it is given*/
- get_page(desc_cb->priv);
- }
- return;
- }
-
- /* Move offset up to the next cache line */
- desc_cb->page_offset += truesize;
-
- if (desc_cb->page_offset <= last_offset) {
- desc_cb->reuse_flag = 1;
- /* Bump ref count on page before it is given*/
- get_page(desc_cb->priv);
- }
-}
-
-static void hns3_rx_checksum(struct hns3_enet_ring *ring, struct sk_buff *skb,
- struct hns3_desc *desc)
-{
- struct net_device *netdev = ring->tqp->handle->kinfo.netdev;
- int l3_type, l4_type;
- u32 bd_base_info;
- int ol4_type;
- u32 l234info;
-
- bd_base_info = le32_to_cpu(desc->rx.bd_base_info);
- l234info = le32_to_cpu(desc->rx.l234_info);
-
- skb->ip_summed = CHECKSUM_NONE;
-
- skb_checksum_none_assert(skb);
-
- if (!(netdev->features & NETIF_F_RXCSUM))
- return;
-
- /* check if hardware has done checksum */
- if (!hnae_get_bit(bd_base_info, HNS3_RXD_L3L4P_B))
- return;
-
- if (unlikely(hnae_get_bit(l234info, HNS3_RXD_L3E_B) ||
- hnae_get_bit(l234info, HNS3_RXD_L4E_B) ||
- hnae_get_bit(l234info, HNS3_RXD_OL3E_B) ||
- hnae_get_bit(l234info, HNS3_RXD_OL4E_B))) {
- netdev_err(netdev, "L3/L4 error pkt\n");
- u64_stats_update_begin(&ring->syncp);
- ring->stats.l3l4_csum_err++;
- u64_stats_update_end(&ring->syncp);
-
- return;
- }
-
- l3_type = hnae_get_field(l234info, HNS3_RXD_L3ID_M,
- HNS3_RXD_L3ID_S);
- l4_type = hnae_get_field(l234info, HNS3_RXD_L4ID_M,
- HNS3_RXD_L4ID_S);
-
- ol4_type = hnae_get_field(l234info, HNS3_RXD_OL4ID_M, HNS3_RXD_OL4ID_S);
- switch (ol4_type) {
- case HNS3_OL4_TYPE_MAC_IN_UDP:
- case HNS3_OL4_TYPE_NVGRE:
- skb->csum_level = 1;
- case HNS3_OL4_TYPE_NO_TUN:
- /* Can checksum ipv4 or ipv6 + UDP/TCP/SCTP packets */
- if (l3_type == HNS3_L3_TYPE_IPV4 ||
- (l3_type == HNS3_L3_TYPE_IPV6 &&
- (l4_type == HNS3_L4_TYPE_UDP ||
- l4_type == HNS3_L4_TYPE_TCP ||
- l4_type == HNS3_L4_TYPE_SCTP)))
- skb->ip_summed = CHECKSUM_UNNECESSARY;
- break;
- }
-}
-
-static void hns3_rx_skb(struct hns3_enet_ring *ring, struct sk_buff *skb)
-{
- napi_gro_receive(&ring->tqp_vector->napi, skb);
-}
-
-static int hns3_handle_rx_bd(struct hns3_enet_ring *ring,
- struct sk_buff **out_skb, int *out_bnum)
-{
- struct net_device *netdev = ring->tqp->handle->kinfo.netdev;
- struct hns3_desc_cb *desc_cb;
- struct hns3_desc *desc;
- struct sk_buff *skb;
- unsigned char *va;
- u32 bd_base_info;
- int pull_len;
- u32 l234info;
- int length;
- int bnum;
-
- desc = &ring->desc[ring->next_to_clean];
- desc_cb = &ring->desc_cb[ring->next_to_clean];
-
- prefetch(desc);
-
- length = le16_to_cpu(desc->rx.pkt_len);
- bd_base_info = le32_to_cpu(desc->rx.bd_base_info);
- l234info = le32_to_cpu(desc->rx.l234_info);
-
- /* Check valid BD */
- if (!hnae_get_bit(bd_base_info, HNS3_RXD_VLD_B))
- return -EFAULT;
-
- va = (unsigned char *)desc_cb->buf + desc_cb->page_offset;
-
- /* Prefetch first cache line of first page
- * Idea is to cache few bytes of the header of the packet. Our L1 Cache
- * line size is 64B so need to prefetch twice to make it 128B. But in
- * actual we can have greater size of caches with 128B Level 1 cache
- * lines. In such a case, single fetch would suffice to cache in the
- * relevant part of the header.
- */
- prefetch(va);
-#if L1_CACHE_BYTES < 128
- prefetch(va + L1_CACHE_BYTES);
-#endif
-
- skb = *out_skb = napi_alloc_skb(&ring->tqp_vector->napi,
- HNS3_RX_HEAD_SIZE);
- if (unlikely(!skb)) {
- netdev_err(netdev, "alloc rx skb fail\n");
-
- u64_stats_update_begin(&ring->syncp);
- ring->stats.sw_err_cnt++;
- u64_stats_update_end(&ring->syncp);
-
- return -ENOMEM;
- }
-
- prefetchw(skb->data);
-
- bnum = 1;
- if (length <= HNS3_RX_HEAD_SIZE) {
- memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long)));
-
- /* We can reuse buffer as-is, just make sure it is local */
- if (likely(page_to_nid(desc_cb->priv) == numa_node_id()))
- desc_cb->reuse_flag = 1;
- else /* This page cannot be reused so discard it */
- put_page(desc_cb->priv);
-
- ring_ptr_move_fw(ring, next_to_clean);
- } else {
- u64_stats_update_begin(&ring->syncp);
- ring->stats.seg_pkt_cnt++;
- u64_stats_update_end(&ring->syncp);
-
- pull_len = hns3_nic_get_headlen(va, l234info,
- HNS3_RX_HEAD_SIZE);
- memcpy(__skb_put(skb, pull_len), va,
- ALIGN(pull_len, sizeof(long)));
-
- hns3_nic_reuse_page(skb, 0, ring, pull_len, desc_cb);
- ring_ptr_move_fw(ring, next_to_clean);
-
- while (!hnae_get_bit(bd_base_info, HNS3_RXD_FE_B)) {
- desc = &ring->desc[ring->next_to_clean];
- desc_cb = &ring->desc_cb[ring->next_to_clean];
- bd_base_info = le32_to_cpu(desc->rx.bd_base_info);
- hns3_nic_reuse_page(skb, bnum, ring, 0, desc_cb);
- ring_ptr_move_fw(ring, next_to_clean);
- bnum++;
- }
- }
-
- *out_bnum = bnum;
-
- if (unlikely(!hnae_get_bit(bd_base_info, HNS3_RXD_VLD_B))) {
- netdev_err(netdev, "no valid bd,%016llx,%016llx\n",
- ((u64 *)desc)[0], ((u64 *)desc)[1]);
- u64_stats_update_begin(&ring->syncp);
- ring->stats.non_vld_descs++;
- u64_stats_update_end(&ring->syncp);
-
- dev_kfree_skb_any(skb);
- return -EINVAL;
- }
-
- if (unlikely((!desc->rx.pkt_len) ||
- hnae_get_bit(l234info, HNS3_RXD_TRUNCAT_B))) {
- netdev_err(netdev, "truncated pkt\n");
- u64_stats_update_begin(&ring->syncp);
- ring->stats.err_pkt_len++;
- u64_stats_update_end(&ring->syncp);
-
- dev_kfree_skb_any(skb);
- return -EFAULT;
- }
-
- if (unlikely(hnae_get_bit(l234info, HNS3_RXD_L2E_B))) {
- netdev_err(netdev, "L2 error pkt\n");
- u64_stats_update_begin(&ring->syncp);
- ring->stats.l2_err++;
- u64_stats_update_end(&ring->syncp);
-
- dev_kfree_skb_any(skb);
- return -EFAULT;
- }
-
- u64_stats_update_begin(&ring->syncp);
- ring->stats.rx_pkts++;
- ring->stats.rx_bytes += skb->len;
- u64_stats_update_end(&ring->syncp);
-
- ring->tqp_vector->rx_group.total_bytes += skb->len;
-
- hns3_rx_checksum(ring, skb, desc);
- return 0;
-}
-
-int hns3_clean_rx_ring(
- struct hns3_enet_ring *ring, int budget,
- void (*rx_fn)(struct hns3_enet_ring *, struct sk_buff *))
-{
-#define RCB_NOF_ALLOC_RX_BUFF_ONCE 16
- struct net_device *netdev = ring->tqp->handle->kinfo.netdev;
- int recv_pkts, recv_bds, clean_count, err;
- int unused_count = hns3_desc_unused(ring);
- struct sk_buff *skb = NULL;
- int num, bnum = 0;
-
- num = readl_relaxed(ring->tqp->io_base + HNS3_RING_RX_RING_FBDNUM_REG);
- rmb(); /* Make sure num taken effect before the other data is touched */
-
- recv_pkts = 0, recv_bds = 0, clean_count = 0;
- num -= unused_count;
-
- while (recv_pkts < budget && recv_bds < num) {
- /* Reuse or realloc buffers */
- if (clean_count + unused_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) {
- hns3_nic_alloc_rx_buffers(ring,
- clean_count + unused_count);
- clean_count = 0;
- unused_count = hns3_desc_unused(ring);
- }
-
- /* Poll one pkt */
- err = hns3_handle_rx_bd(ring, &skb, &bnum);
- if (unlikely(!skb)) /* This fault cannot be repaired */
- goto out;
-
- recv_bds += bnum;
- clean_count += bnum;
- if (unlikely(err)) { /* Do jump the err */
- recv_pkts++;
- continue;
- }
-
- /* Do update ip stack process */
- skb->protocol = eth_type_trans(skb, netdev);
- rx_fn(ring, skb);
-
- recv_pkts++;
- }
-
-out:
- /* Make all data has been write before submit */
- if (clean_count + unused_count > 0)
- hns3_nic_alloc_rx_buffers(ring,
- clean_count + unused_count);
-
- return recv_pkts;
-}
-
-static bool hns3_get_new_int_gl(struct hns3_enet_ring_group *ring_group)
-{
-#define HNS3_RX_ULTRA_PACKET_RATE 40000
- enum hns3_flow_level_range new_flow_level;
- struct hns3_enet_tqp_vector *tqp_vector;
- int packets_per_secs;
- int bytes_per_usecs;
- u16 new_int_gl;
- int usecs;
-
- if (!ring_group->int_gl)
- return false;
-
- if (ring_group->total_packets == 0) {
- ring_group->int_gl = HNS3_INT_GL_50K;
- ring_group->flow_level = HNS3_FLOW_LOW;
- return true;
- }
-
- /* Simple throttlerate management
- * 0-10MB/s lower (50000 ints/s)
- * 10-20MB/s middle (20000 ints/s)
- * 20-1249MB/s high (18000 ints/s)
- * > 40000pps ultra (8000 ints/s)
- */
- new_flow_level = ring_group->flow_level;
- new_int_gl = ring_group->int_gl;
- tqp_vector = ring_group->ring->tqp_vector;
- usecs = (ring_group->int_gl << 1);
- bytes_per_usecs = ring_group->total_bytes / usecs;
- /* 1000000 microseconds */
- packets_per_secs = ring_group->total_packets * 1000000 / usecs;
-
- switch (new_flow_level) {
- case HNS3_FLOW_LOW:
- if (bytes_per_usecs > 10)
- new_flow_level = HNS3_FLOW_MID;
- break;
- case HNS3_FLOW_MID:
- if (bytes_per_usecs > 20)
- new_flow_level = HNS3_FLOW_HIGH;
- else if (bytes_per_usecs <= 10)
- new_flow_level = HNS3_FLOW_LOW;
- break;
- case HNS3_FLOW_HIGH:
- case HNS3_FLOW_ULTRA:
- default:
- if (bytes_per_usecs <= 20)
- new_flow_level = HNS3_FLOW_MID;
- break;
- }
-
- if ((packets_per_secs > HNS3_RX_ULTRA_PACKET_RATE) &&
- (&tqp_vector->rx_group == ring_group))
- new_flow_level = HNS3_FLOW_ULTRA;
-
- switch (new_flow_level) {
- case HNS3_FLOW_LOW:
- new_int_gl = HNS3_INT_GL_50K;
- break;
- case HNS3_FLOW_MID:
- new_int_gl = HNS3_INT_GL_20K;
- break;
- case HNS3_FLOW_HIGH:
- new_int_gl = HNS3_INT_GL_18K;
- break;
- case HNS3_FLOW_ULTRA:
- new_int_gl = HNS3_INT_GL_8K;
- break;
- default:
- break;
- }
-
- ring_group->total_bytes = 0;
- ring_group->total_packets = 0;
- ring_group->flow_level = new_flow_level;
- if (new_int_gl != ring_group->int_gl) {
- ring_group->int_gl = new_int_gl;
- return true;
- }
- return false;
-}
-
-static void hns3_update_new_int_gl(struct hns3_enet_tqp_vector *tqp_vector)
-{
- u16 rx_int_gl, tx_int_gl;
- bool rx, tx;
-
- rx = hns3_get_new_int_gl(&tqp_vector->rx_group);
- tx = hns3_get_new_int_gl(&tqp_vector->tx_group);
- rx_int_gl = tqp_vector->rx_group.int_gl;
- tx_int_gl = tqp_vector->tx_group.int_gl;
- if (rx && tx) {
- if (rx_int_gl > tx_int_gl) {
- tqp_vector->tx_group.int_gl = rx_int_gl;
- tqp_vector->tx_group.flow_level =
- tqp_vector->rx_group.flow_level;
- hns3_set_vector_coalesc_gl(tqp_vector, rx_int_gl);
- } else {
- tqp_vector->rx_group.int_gl = tx_int_gl;
- tqp_vector->rx_group.flow_level =
- tqp_vector->tx_group.flow_level;
- hns3_set_vector_coalesc_gl(tqp_vector, tx_int_gl);
- }
- }
-}
-
-static int hns3_nic_common_poll(struct napi_struct *napi, int budget)
-{
- struct hns3_enet_ring *ring;
- int rx_pkt_total = 0;
-
- struct hns3_enet_tqp_vector *tqp_vector =
- container_of(napi, struct hns3_enet_tqp_vector, napi);
- bool clean_complete = true;
- int rx_budget;
-
- /* Since the actual Tx work is minimal, we can give the Tx a larger
- * budget and be more aggressive about cleaning up the Tx descriptors.
- */
- hns3_for_each_ring(ring, tqp_vector->tx_group) {
- if (!hns3_clean_tx_ring(ring, budget))
- clean_complete = false;
- }
-
- /* make sure rx ring budget not smaller than 1 */
- rx_budget = max(budget / tqp_vector->num_tqps, 1);
-
- hns3_for_each_ring(ring, tqp_vector->rx_group) {
- int rx_cleaned = hns3_clean_rx_ring(ring, rx_budget,
- hns3_rx_skb);
-
- if (rx_cleaned >= rx_budget)
- clean_complete = false;
-
- rx_pkt_total += rx_cleaned;
- }
-
- tqp_vector->rx_group.total_packets += rx_pkt_total;
-
- if (!clean_complete)
- return budget;
-
- napi_complete(napi);
- hns3_update_new_int_gl(tqp_vector);
- hns3_mask_vector_irq(tqp_vector, 1);
-
- return rx_pkt_total;
-}
-
-static int hns3_get_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector,
- struct hnae3_ring_chain_node *head)
-{
- struct pci_dev *pdev = tqp_vector->handle->pdev;
- struct hnae3_ring_chain_node *cur_chain = head;
- struct hnae3_ring_chain_node *chain;
- struct hns3_enet_ring *tx_ring;
- struct hns3_enet_ring *rx_ring;
-
- tx_ring = tqp_vector->tx_group.ring;
- if (tx_ring) {
- cur_chain->tqp_index = tx_ring->tqp->tqp_index;
- hnae_set_bit(cur_chain->flag, HNAE3_RING_TYPE_B,
- HNAE3_RING_TYPE_TX);
-
- cur_chain->next = NULL;
-
- while (tx_ring->next) {
- tx_ring = tx_ring->next;
-
- chain = devm_kzalloc(&pdev->dev, sizeof(*chain),
- GFP_KERNEL);
- if (!chain)
- return -ENOMEM;
-
- cur_chain->next = chain;
- chain->tqp_index = tx_ring->tqp->tqp_index;
- hnae_set_bit(chain->flag, HNAE3_RING_TYPE_B,
- HNAE3_RING_TYPE_TX);
-
- cur_chain = chain;
- }
- }
-
- rx_ring = tqp_vector->rx_group.ring;
- if (!tx_ring && rx_ring) {
- cur_chain->next = NULL;
- cur_chain->tqp_index = rx_ring->tqp->tqp_index;
- hnae_set_bit(cur_chain->flag, HNAE3_RING_TYPE_B,
- HNAE3_RING_TYPE_RX);
-
- rx_ring = rx_ring->next;
- }
-
- while (rx_ring) {
- chain = devm_kzalloc(&pdev->dev, sizeof(*chain), GFP_KERNEL);
- if (!chain)
- return -ENOMEM;
-
- cur_chain->next = chain;
- chain->tqp_index = rx_ring->tqp->tqp_index;
- hnae_set_bit(chain->flag, HNAE3_RING_TYPE_B,
- HNAE3_RING_TYPE_RX);
- cur_chain = chain;
-
- rx_ring = rx_ring->next;
- }
-
- return 0;
-}
-
-static void hns3_free_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector,
- struct hnae3_ring_chain_node *head)
-{
- struct pci_dev *pdev = tqp_vector->handle->pdev;
- struct hnae3_ring_chain_node *chain_tmp, *chain;
-
- chain = head->next;
-
- while (chain) {
- chain_tmp = chain->next;
- devm_kfree(&pdev->dev, chain);
- chain = chain_tmp;
- }
-}
-
-static void hns3_add_ring_to_group(struct hns3_enet_ring_group *group,
- struct hns3_enet_ring *ring)
-{
- ring->next = group->ring;
- group->ring = ring;
-
- group->count++;
-}
-
-static int hns3_nic_init_vector_data(struct hns3_nic_priv *priv)
-{
- struct hnae3_ring_chain_node vector_ring_chain;
- struct hnae3_handle *h = priv->ae_handle;
- struct hns3_enet_tqp_vector *tqp_vector;
- struct hnae3_vector_info *vector;
- struct pci_dev *pdev = h->pdev;
- u16 tqp_num = h->kinfo.num_tqps;
- u16 vector_num;
- int ret = 0;
- u16 i;
-
- /* RSS size, cpu online and vector_num should be the same */
- /* Should consider 2p/4p later */
- vector_num = min_t(u16, num_online_cpus(), tqp_num);
- vector = devm_kcalloc(&pdev->dev, vector_num, sizeof(*vector),
- GFP_KERNEL);
- if (!vector)
- return -ENOMEM;
-
- vector_num = h->ae_algo->ops->get_vector(h, vector_num, vector);
-
- priv->vector_num = vector_num;
- priv->tqp_vector = (struct hns3_enet_tqp_vector *)
- devm_kcalloc(&pdev->dev, vector_num, sizeof(*priv->tqp_vector),
- GFP_KERNEL);
- if (!priv->tqp_vector)
- return -ENOMEM;
-
- for (i = 0; i < tqp_num; i++) {
- u16 vector_i = i % vector_num;
-
- tqp_vector = &priv->tqp_vector[vector_i];
-
- hns3_add_ring_to_group(&tqp_vector->tx_group,
- priv->ring_data[i].ring);
-
- hns3_add_ring_to_group(&tqp_vector->rx_group,
- priv->ring_data[i + tqp_num].ring);
-
- tqp_vector->idx = vector_i;
- tqp_vector->mask_addr = vector[vector_i].io_addr;
- tqp_vector->vector_irq = vector[vector_i].vector;
- tqp_vector->num_tqps++;
-
- priv->ring_data[i].ring->tqp_vector = tqp_vector;
- priv->ring_data[i + tqp_num].ring->tqp_vector = tqp_vector;
- }
-
- for (i = 0; i < vector_num; i++) {
- tqp_vector = &priv->tqp_vector[i];
-
- tqp_vector->rx_group.total_bytes = 0;
- tqp_vector->rx_group.total_packets = 0;
- tqp_vector->tx_group.total_bytes = 0;
- tqp_vector->tx_group.total_packets = 0;
- hns3_vector_gl_rl_init(tqp_vector);
- tqp_vector->handle = h;
-
- ret = hns3_get_vector_ring_chain(tqp_vector,
- &vector_ring_chain);
- if (ret)
- goto out;
-
- ret = h->ae_algo->ops->map_ring_to_vector(h,
- tqp_vector->vector_irq, &vector_ring_chain);
- if (ret)
- goto out;
-
- hns3_free_vector_ring_chain(tqp_vector, &vector_ring_chain);
-
- netif_napi_add(priv->netdev, &tqp_vector->napi,
- hns3_nic_common_poll, NAPI_POLL_WEIGHT);
- }
-
-out:
- devm_kfree(&pdev->dev, vector);
- return ret;
-}
-
-static int hns3_nic_uninit_vector_data(struct hns3_nic_priv *priv)
-{
- struct hnae3_ring_chain_node vector_ring_chain;
- struct hnae3_handle *h = priv->ae_handle;
- struct hns3_enet_tqp_vector *tqp_vector;
- struct pci_dev *pdev = h->pdev;
- int i, ret;
-
- for (i = 0; i < priv->vector_num; i++) {
- tqp_vector = &priv->tqp_vector[i];
-
- ret = hns3_get_vector_ring_chain(tqp_vector,
- &vector_ring_chain);
- if (ret)
- return ret;
-
- ret = h->ae_algo->ops->unmap_ring_from_vector(h,
- tqp_vector->vector_irq, &vector_ring_chain);
- if (ret)
- return ret;
-
- hns3_free_vector_ring_chain(tqp_vector, &vector_ring_chain);
-
- if (priv->tqp_vector[i].irq_init_flag == HNS3_VECTOR_INITED) {
- (void)irq_set_affinity_hint(
- priv->tqp_vector[i].vector_irq,
- NULL);
- free_irq(priv->tqp_vector[i].vector_irq,
- &priv->tqp_vector[i]);
- }
-
- priv->ring_data[i].ring->irq_init_flag = HNS3_VECTOR_NOT_INITED;
-
- netif_napi_del(&priv->tqp_vector[i].napi);
- }
-
- devm_kfree(&pdev->dev, priv->tqp_vector);
-
- return 0;
-}
-
-static int hns3_ring_get_cfg(struct hnae3_queue *q, struct hns3_nic_priv *priv,
- int ring_type)
-{
- struct hns3_nic_ring_data *ring_data = priv->ring_data;
- int queue_num = priv->ae_handle->kinfo.num_tqps;
- struct pci_dev *pdev = priv->ae_handle->pdev;
- struct hns3_enet_ring *ring;
-
- ring = devm_kzalloc(&pdev->dev, sizeof(*ring), GFP_KERNEL);
- if (!ring)
- return -ENOMEM;
-
- if (ring_type == HNAE3_RING_TYPE_TX) {
- ring_data[q->tqp_index].ring = ring;
- ring_data[q->tqp_index].queue_index = q->tqp_index;
- ring->io_base = (u8 __iomem *)q->io_base + HNS3_TX_REG_OFFSET;
- } else {
- ring_data[q->tqp_index + queue_num].ring = ring;
- ring_data[q->tqp_index + queue_num].queue_index = q->tqp_index;
- ring->io_base = q->io_base;
- }
-
- hnae_set_bit(ring->flag, HNAE3_RING_TYPE_B, ring_type);
-
- ring->tqp = q;
- ring->desc = NULL;
- ring->desc_cb = NULL;
- ring->dev = priv->dev;
- ring->desc_dma_addr = 0;
- ring->buf_size = q->buf_size;
- ring->desc_num = q->desc_num;
- ring->next_to_use = 0;
- ring->next_to_clean = 0;
-
- return 0;
-}
-
-static int hns3_queue_to_ring(struct hnae3_queue *tqp,
- struct hns3_nic_priv *priv)
-{
- int ret;
-
- ret = hns3_ring_get_cfg(tqp, priv, HNAE3_RING_TYPE_TX);
- if (ret)
- return ret;
-
- ret = hns3_ring_get_cfg(tqp, priv, HNAE3_RING_TYPE_RX);
- if (ret)
- return ret;
-
- return 0;
-}
-
-static int hns3_get_ring_config(struct hns3_nic_priv *priv)
-{
- struct hnae3_handle *h = priv->ae_handle;
- struct pci_dev *pdev = h->pdev;
- int i, ret;
-
- priv->ring_data = devm_kzalloc(&pdev->dev, h->kinfo.num_tqps *
- sizeof(*priv->ring_data) * 2,
- GFP_KERNEL);
- if (!priv->ring_data)
- return -ENOMEM;
-
- for (i = 0; i < h->kinfo.num_tqps; i++) {
- ret = hns3_queue_to_ring(h->kinfo.tqp[i], priv);
- if (ret)
- goto err;
- }
-
- return 0;
-err:
- devm_kfree(&pdev->dev, priv->ring_data);
- return ret;
-}
-
-static int hns3_alloc_ring_memory(struct hns3_enet_ring *ring)
-{
- int ret;
-
- if (ring->desc_num <= 0 || ring->buf_size <= 0)
- return -EINVAL;
-
- ring->desc_cb = kcalloc(ring->desc_num, sizeof(ring->desc_cb[0]),
- GFP_KERNEL);
- if (!ring->desc_cb) {
- ret = -ENOMEM;
- goto out;
- }
-
- ret = hns3_alloc_desc(ring);
- if (ret)
- goto out_with_desc_cb;
-
- if (!HNAE3_IS_TX_RING(ring)) {
- ret = hns3_alloc_ring_buffers(ring);
- if (ret)
- goto out_with_desc;
- }
-
- return 0;
-
-out_with_desc:
- hns3_free_desc(ring);
-out_with_desc_cb:
- kfree(ring->desc_cb);
- ring->desc_cb = NULL;
-out:
- return ret;
-}
-
-static void hns3_fini_ring(struct hns3_enet_ring *ring)
-{
- hns3_free_desc(ring);
- kfree(ring->desc_cb);
- ring->desc_cb = NULL;
- ring->next_to_clean = 0;
- ring->next_to_use = 0;
-}
-
-static int hns3_buf_size2type(u32 buf_size)
-{
- int bd_size_type;
-
- switch (buf_size) {
- case 512:
- bd_size_type = HNS3_BD_SIZE_512_TYPE;
- break;
- case 1024:
- bd_size_type = HNS3_BD_SIZE_1024_TYPE;
- break;
- case 2048:
- bd_size_type = HNS3_BD_SIZE_2048_TYPE;
- break;
- case 4096:
- bd_size_type = HNS3_BD_SIZE_4096_TYPE;
- break;
- default:
- bd_size_type = HNS3_BD_SIZE_2048_TYPE;
- }
-
- return bd_size_type;
-}
-
-static void hns3_init_ring_hw(struct hns3_enet_ring *ring)
-{
- dma_addr_t dma = ring->desc_dma_addr;
- struct hnae3_queue *q = ring->tqp;
-
- if (!HNAE3_IS_TX_RING(ring)) {
- hns3_write_dev(q, HNS3_RING_RX_RING_BASEADDR_L_REG,
- (u32)dma);
- hns3_write_dev(q, HNS3_RING_RX_RING_BASEADDR_H_REG,
- (u32)((dma >> 31) >> 1));
-
- hns3_write_dev(q, HNS3_RING_RX_RING_BD_LEN_REG,
- hns3_buf_size2type(ring->buf_size));
- hns3_write_dev(q, HNS3_RING_RX_RING_BD_NUM_REG,
- ring->desc_num / 8 - 1);
-
- } else {
- hns3_write_dev(q, HNS3_RING_TX_RING_BASEADDR_L_REG,
- (u32)dma);
- hns3_write_dev(q, HNS3_RING_TX_RING_BASEADDR_H_REG,
- (u32)((dma >> 31) >> 1));
-
- hns3_write_dev(q, HNS3_RING_TX_RING_BD_LEN_REG,
- hns3_buf_size2type(ring->buf_size));
- hns3_write_dev(q, HNS3_RING_TX_RING_BD_NUM_REG,
- ring->desc_num / 8 - 1);
- }
-}
-
-int hns3_init_all_ring(struct hns3_nic_priv *priv)
-{
- struct hnae3_handle *h = priv->ae_handle;
- int ring_num = h->kinfo.num_tqps * 2;
- int i, j;
- int ret;
-
- for (i = 0; i < ring_num; i++) {
- ret = hns3_alloc_ring_memory(priv->ring_data[i].ring);
- if (ret) {
- dev_err(priv->dev,
- "Alloc ring memory fail! ret=%d\n", ret);
- goto out_when_alloc_ring_memory;
- }
-
- hns3_init_ring_hw(priv->ring_data[i].ring);
-
- u64_stats_init(&priv->ring_data[i].ring->syncp);
- }
-
- return 0;
-
-out_when_alloc_ring_memory:
- for (j = i - 1; j >= 0; j--)
- hns3_fini_ring(priv->ring_data[j].ring);
-
- return -ENOMEM;
-}
-
-int hns3_uninit_all_ring(struct hns3_nic_priv *priv)
-{
- struct hnae3_handle *h = priv->ae_handle;
- int i;
-
- for (i = 0; i < h->kinfo.num_tqps; i++) {
- if (h->ae_algo->ops->reset_queue)
- h->ae_algo->ops->reset_queue(h, i);
-
- hns3_fini_ring(priv->ring_data[i].ring);
- hns3_fini_ring(priv->ring_data[i + h->kinfo.num_tqps].ring);
- }
-
- return 0;
-}
-
-/* Set mac addr if it is configured. or leave it to the AE driver */
-static void hns3_init_mac_addr(struct net_device *netdev)
-{
- struct hns3_nic_priv *priv = netdev_priv(netdev);
- struct hnae3_handle *h = priv->ae_handle;
- u8 mac_addr_temp[ETH_ALEN];
-
- if (h->ae_algo->ops->get_mac_addr) {
- h->ae_algo->ops->get_mac_addr(h, mac_addr_temp);
- ether_addr_copy(netdev->dev_addr, mac_addr_temp);
- }
-
- /* Check if the MAC address is valid, if not get a random one */
- if (!is_valid_ether_addr(netdev->dev_addr)) {
- eth_hw_addr_random(netdev);
- dev_warn(priv->dev, "using random MAC address %pM\n",
- netdev->dev_addr);
- }
-
- if (h->ae_algo->ops->set_mac_addr)
- h->ae_algo->ops->set_mac_addr(h, netdev->dev_addr);
-
-}
-
-static void hns3_nic_set_priv_ops(struct net_device *netdev)
-{
- struct hns3_nic_priv *priv = netdev_priv(netdev);
-
- if ((netdev->features & NETIF_F_TSO) ||
- (netdev->features & NETIF_F_TSO6)) {
- priv->ops.fill_desc = hns3_fill_desc_tso;
- priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tso;
- } else {
- priv->ops.fill_desc = hns3_fill_desc;
- priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tx;
- }
-}
-
-static int hns3_client_init(struct hnae3_handle *handle)
-{
- struct pci_dev *pdev = handle->pdev;
- struct hns3_nic_priv *priv;
- struct net_device *netdev;
- int ret;
-
- netdev = alloc_etherdev_mq(sizeof(struct hns3_nic_priv),
- handle->kinfo.num_tqps);
- if (!netdev)
- return -ENOMEM;
-
- priv = netdev_priv(netdev);
- priv->dev = &pdev->dev;
- priv->netdev = netdev;
- priv->ae_handle = handle;
- priv->last_reset_time = jiffies;
- priv->reset_level = HNAE3_FUNC_RESET;
- priv->tx_timeout_count = 0;
-
- handle->kinfo.netdev = netdev;
- handle->priv = (void *)priv;
-
- hns3_init_mac_addr(netdev);
-
- hns3_set_default_feature(netdev);
-
- netdev->watchdog_timeo = HNS3_TX_TIMEOUT;
- netdev->priv_flags |= IFF_UNICAST_FLT;
- netdev->netdev_ops = &hns3_nic_netdev_ops;
- SET_NETDEV_DEV(netdev, &pdev->dev);
- hns3_ethtool_set_ops(netdev);
- hns3_nic_set_priv_ops(netdev);
-
- /* Carrier off reporting is important to ethtool even BEFORE open */
- netif_carrier_off(netdev);
-
- ret = hns3_get_ring_config(priv);
- if (ret) {
- ret = -ENOMEM;
- goto out_get_ring_cfg;
- }
-
- ret = hns3_nic_init_vector_data(priv);
- if (ret) {
- ret = -ENOMEM;
- goto out_init_vector_data;
- }
-
- ret = hns3_init_all_ring(priv);
- if (ret) {
- ret = -ENOMEM;
- goto out_init_ring_data;
- }
-
- ret = register_netdev(netdev);
- if (ret) {
- dev_err(priv->dev, "probe register netdev fail!\n");
- goto out_reg_netdev_fail;
- }
-
- hns3_dcbnl_setup(handle);
-
- /* MTU range: (ETH_MIN_MTU(kernel default) - 9706) */
- netdev->max_mtu = HNS3_MAX_MTU - (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
-
- return ret;
-
-out_reg_netdev_fail:
-out_init_ring_data:
- (void)hns3_nic_uninit_vector_data(priv);
- priv->ring_data = NULL;
-out_init_vector_data:
-out_get_ring_cfg:
- priv->ae_handle = NULL;
- free_netdev(netdev);
- return ret;
-}
-
-static void hns3_client_uninit(struct hnae3_handle *handle, bool reset)
-{
- struct net_device *netdev = handle->kinfo.netdev;
- struct hns3_nic_priv *priv = netdev_priv(netdev);
- int ret;
-
- if (netdev->reg_state != NETREG_UNINITIALIZED)
- unregister_netdev(netdev);
-
- ret = hns3_nic_uninit_vector_data(priv);
- if (ret)
- netdev_err(netdev, "uninit vector error\n");
-
- ret = hns3_uninit_all_ring(priv);
- if (ret)
- netdev_err(netdev, "uninit ring error\n");
-
- priv->ring_data = NULL;
-
- free_netdev(netdev);
-}
-
-static void hns3_link_status_change(struct hnae3_handle *handle, bool linkup)
-{
- struct net_device *netdev = handle->kinfo.netdev;
-
- if (!netdev)
- return;
-
- if (linkup) {
- netif_carrier_on(netdev);
- netif_tx_wake_all_queues(netdev);
- netdev_info(netdev, "link up\n");
- } else {
- netif_carrier_off(netdev);
- netif_tx_stop_all_queues(netdev);
- netdev_info(netdev, "link down\n");
- }
-}
-
-static int hns3_client_setup_tc(struct hnae3_handle *handle, u8 tc)
-{
- struct hnae3_knic_private_info *kinfo = &handle->kinfo;
- struct net_device *ndev = kinfo->netdev;
- bool if_running;
- int ret;
- u8 i;
-
- if (tc > HNAE3_MAX_TC)
- return -EINVAL;
-
- if (!ndev)
- return -ENODEV;
-
- if_running = netif_running(ndev);
-
- ret = netdev_set_num_tc(ndev, tc);
- if (ret)
- return ret;
-
- if (if_running) {
- (void)hns3_nic_net_stop(ndev);
- msleep(100);
- }
-
- ret = (kinfo->dcb_ops && kinfo->dcb_ops->map_update) ?
- kinfo->dcb_ops->map_update(handle) : -EOPNOTSUPP;
- if (ret)
- goto err_out;
-
- if (tc <= 1) {
- netdev_reset_tc(ndev);
- goto out;
- }
-
- for (i = 0; i < HNAE3_MAX_TC; i++) {
- struct hnae3_tc_info *tc_info = &kinfo->tc_info[i];
-
- if (tc_info->enable)
- netdev_set_tc_queue(ndev,
- tc_info->tc,
- tc_info->tqp_count,
- tc_info->tqp_offset);
- }
-
- for (i = 0; i < HNAE3_MAX_USER_PRIO; i++) {
- netdev_set_prio_tc_map(ndev, i,
- kinfo->prio_tc[i]);
- }
-
-out:
- ret = hns3_nic_set_real_num_queue(ndev);
-
-err_out:
- if (if_running)
- (void)hns3_nic_net_open(ndev);
-
- return ret;
-}
-
-static void hns3_recover_hw_addr(struct net_device *ndev)
-{
- struct netdev_hw_addr_list *list;
- struct netdev_hw_addr *ha, *tmp;
-
- /* go through and sync uc_addr entries to the device */
- list = &ndev->uc;
- list_for_each_entry_safe(ha, tmp, &list->list, list)
- hns3_nic_uc_sync(ndev, ha->addr);
-
- /* go through and sync mc_addr entries to the device */
- list = &ndev->mc;
- list_for_each_entry_safe(ha, tmp, &list->list, list)
- hns3_nic_mc_sync(ndev, ha->addr);
-}
-
-static void hns3_drop_skb_data(struct hns3_enet_ring *ring, struct sk_buff *skb)
-{
- dev_kfree_skb_any(skb);
-}
-
-static void hns3_clear_all_ring(struct hnae3_handle *h)
-{
- struct net_device *ndev = h->kinfo.netdev;
- struct hns3_nic_priv *priv = netdev_priv(ndev);
- u32 i;
-
- for (i = 0; i < h->kinfo.num_tqps; i++) {
- struct netdev_queue *dev_queue;
- struct hns3_enet_ring *ring;
-
- ring = priv->ring_data[i].ring;
- hns3_clean_tx_ring(ring, ring->desc_num);
- dev_queue = netdev_get_tx_queue(ndev,
- priv->ring_data[i].queue_index);
- netdev_tx_reset_queue(dev_queue);
-
- ring = priv->ring_data[i + h->kinfo.num_tqps].ring;
- hns3_clean_rx_ring(ring, ring->desc_num, hns3_drop_skb_data);
- }
-}
-
-static int hns3_reset_notify_down_enet(struct hnae3_handle *handle)
-{
- struct hnae3_knic_private_info *kinfo = &handle->kinfo;
- struct net_device *ndev = kinfo->netdev;
-
- if (!netif_running(ndev))
- return -EIO;
-
- return hns3_nic_net_stop(ndev);
-}
-
-static int hns3_reset_notify_up_enet(struct hnae3_handle *handle)
-{
- struct hnae3_knic_private_info *kinfo = &handle->kinfo;
- struct hns3_nic_priv *priv = netdev_priv(kinfo->netdev);
- int ret = 0;
-
- if (netif_running(kinfo->netdev)) {
- ret = hns3_nic_net_up(kinfo->netdev);
- if (ret) {
- netdev_err(kinfo->netdev,
- "hns net up fail, ret=%d!\n", ret);
- return ret;
- }
-
- priv->last_reset_time = jiffies;
- }
-
- return ret;
-}
-
-static int hns3_reset_notify_init_enet(struct hnae3_handle *handle)
-{
- struct net_device *netdev = handle->kinfo.netdev;
- struct hns3_nic_priv *priv = netdev_priv(netdev);
- int ret;
-
- priv->reset_level = 1;
- hns3_init_mac_addr(netdev);
- hns3_nic_set_rx_mode(netdev);
- hns3_recover_hw_addr(netdev);
-
- /* Carrier off reporting is important to ethtool even BEFORE open */
- netif_carrier_off(netdev);
-
- ret = hns3_get_ring_config(priv);
- if (ret)
- return ret;
-
- ret = hns3_nic_init_vector_data(priv);
- if (ret)
- return ret;
-
- ret = hns3_init_all_ring(priv);
- if (ret) {
- hns3_nic_uninit_vector_data(priv);
- priv->ring_data = NULL;
- }
-
- return ret;
-}
-
-static int hns3_reset_notify_uninit_enet(struct hnae3_handle *handle)
-{
- struct net_device *netdev = handle->kinfo.netdev;
- struct hns3_nic_priv *priv = netdev_priv(netdev);
- int ret;
-
- hns3_clear_all_ring(handle);
-
- ret = hns3_nic_uninit_vector_data(priv);
- if (ret) {
- netdev_err(netdev, "uninit vector error\n");
- return ret;
- }
-
- ret = hns3_uninit_all_ring(priv);
- if (ret)
- netdev_err(netdev, "uninit ring error\n");
-
- priv->ring_data = NULL;
-
- return ret;
-}
-
-static int hns3_reset_notify(struct hnae3_handle *handle,
- enum hnae3_reset_notify_type type)
-{
- int ret = 0;
-
- switch (type) {
- case HNAE3_UP_CLIENT:
- ret = hns3_reset_notify_up_enet(handle);
- break;
- case HNAE3_DOWN_CLIENT:
- ret = hns3_reset_notify_down_enet(handle);
- break;
- case HNAE3_INIT_CLIENT:
- ret = hns3_reset_notify_init_enet(handle);
- break;
- case HNAE3_UNINIT_CLIENT:
- ret = hns3_reset_notify_uninit_enet(handle);
- break;
- default:
- break;
- }
-
- return ret;
-}
-
-static const struct hnae3_client_ops client_ops = {
- .init_instance = hns3_client_init,
- .uninit_instance = hns3_client_uninit,
- .link_status_change = hns3_link_status_change,
- .setup_tc = hns3_client_setup_tc,
- .reset_notify = hns3_reset_notify,
-};
-
-/* hns3_init_module - Driver registration routine
- * hns3_init_module is the first routine called when the driver is
- * loaded. All it does is register with the PCI subsystem.
- */
-static int __init hns3_init_module(void)
-{
- int ret;
-
- pr_info("%s: %s - version\n", hns3_driver_name, hns3_driver_string);
- pr_info("%s: %s\n", hns3_driver_name, hns3_copyright);
-
- client.type = HNAE3_CLIENT_KNIC;
- snprintf(client.name, HNAE3_CLIENT_NAME_LENGTH - 1, "%s",
- hns3_driver_name);
-
- client.ops = &client_ops;
-
- ret = hnae3_register_client(&client);
- if (ret)
- return ret;
-
- ret = pci_register_driver(&hns3_driver);
- if (ret)
- hnae3_unregister_client(&client);
-
- return ret;
-}
-module_init(hns3_init_module);
-
-/* hns3_exit_module - Driver exit cleanup routine
- * hns3_exit_module is called just before the driver is removed
- * from memory.
- */
-static void __exit hns3_exit_module(void)
-{
- pci_unregister_driver(&hns3_driver);
- hnae3_unregister_client(&client);
-}
-module_exit(hns3_exit_module);
-
-MODULE_DESCRIPTION("HNS3: Hisilicon Ethernet Driver");
-MODULE_AUTHOR("Huawei Tech. Co., Ltd.");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("pci:hns-nic");
+++ /dev/null
-/*
- * Copyright (c) 2016 Hisilicon Limited.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#ifndef __HNS3_ENET_H
-#define __HNS3_ENET_H
-
-#include "hnae3.h"
-
-extern const char hns3_driver_version[];
-
-enum hns3_nic_state {
- HNS3_NIC_STATE_TESTING,
- HNS3_NIC_STATE_RESETTING,
- HNS3_NIC_STATE_REINITING,
- HNS3_NIC_STATE_DOWN,
- HNS3_NIC_STATE_DISABLED,
- HNS3_NIC_STATE_REMOVING,
- HNS3_NIC_STATE_SERVICE_INITED,
- HNS3_NIC_STATE_SERVICE_SCHED,
- HNS3_NIC_STATE2_RESET_REQUESTED,
- HNS3_NIC_STATE_MAX
-};
-
-#define HNS3_RING_RX_RING_BASEADDR_L_REG 0x00000
-#define HNS3_RING_RX_RING_BASEADDR_H_REG 0x00004
-#define HNS3_RING_RX_RING_BD_NUM_REG 0x00008
-#define HNS3_RING_RX_RING_BD_LEN_REG 0x0000C
-#define HNS3_RING_RX_RING_TAIL_REG 0x00018
-#define HNS3_RING_RX_RING_HEAD_REG 0x0001C
-#define HNS3_RING_RX_RING_FBDNUM_REG 0x00020
-#define HNS3_RING_RX_RING_PKTNUM_RECORD_REG 0x0002C
-
-#define HNS3_RING_TX_RING_BASEADDR_L_REG 0x00040
-#define HNS3_RING_TX_RING_BASEADDR_H_REG 0x00044
-#define HNS3_RING_TX_RING_BD_NUM_REG 0x00048
-#define HNS3_RING_TX_RING_BD_LEN_REG 0x0004C
-#define HNS3_RING_TX_RING_TAIL_REG 0x00058
-#define HNS3_RING_TX_RING_HEAD_REG 0x0005C
-#define HNS3_RING_TX_RING_FBDNUM_REG 0x00060
-#define HNS3_RING_TX_RING_OFFSET_REG 0x00064
-#define HNS3_RING_TX_RING_PKTNUM_RECORD_REG 0x0006C
-
-#define HNS3_RING_PREFETCH_EN_REG 0x0007C
-#define HNS3_RING_CFG_VF_NUM_REG 0x00080
-#define HNS3_RING_ASID_REG 0x0008C
-#define HNS3_RING_RX_VM_REG 0x00090
-#define HNS3_RING_T0_BE_RST 0x00094
-#define HNS3_RING_COULD_BE_RST 0x00098
-#define HNS3_RING_WRR_WEIGHT_REG 0x0009c
-
-#define HNS3_RING_INTMSK_RXWL_REG 0x000A0
-#define HNS3_RING_INTSTS_RX_RING_REG 0x000A4
-#define HNS3_RX_RING_INT_STS_REG 0x000A8
-#define HNS3_RING_INTMSK_TXWL_REG 0x000AC
-#define HNS3_RING_INTSTS_TX_RING_REG 0x000B0
-#define HNS3_TX_RING_INT_STS_REG 0x000B4
-#define HNS3_RING_INTMSK_RX_OVERTIME_REG 0x000B8
-#define HNS3_RING_INTSTS_RX_OVERTIME_REG 0x000BC
-#define HNS3_RING_INTMSK_TX_OVERTIME_REG 0x000C4
-#define HNS3_RING_INTSTS_TX_OVERTIME_REG 0x000C8
-
-#define HNS3_RING_MB_CTRL_REG 0x00100
-#define HNS3_RING_MB_DATA_BASE_REG 0x00200
-
-#define HNS3_TX_REG_OFFSET 0x40
-
-#define HNS3_RX_HEAD_SIZE 256
-
-#define HNS3_TX_TIMEOUT (5 * HZ)
-#define HNS3_RING_NAME_LEN 16
-#define HNS3_BUFFER_SIZE_2048 2048
-#define HNS3_RING_MAX_PENDING 32768
-#define HNS3_RING_MIN_PENDING 8
-#define HNS3_RING_BD_MULTIPLE 8
-#define HNS3_MAX_MTU 9728
-
-#define HNS3_BD_SIZE_512_TYPE 0
-#define HNS3_BD_SIZE_1024_TYPE 1
-#define HNS3_BD_SIZE_2048_TYPE 2
-#define HNS3_BD_SIZE_4096_TYPE 3
-
-#define HNS3_RX_FLAG_VLAN_PRESENT 0x1
-#define HNS3_RX_FLAG_L3ID_IPV4 0x0
-#define HNS3_RX_FLAG_L3ID_IPV6 0x1
-#define HNS3_RX_FLAG_L4ID_UDP 0x0
-#define HNS3_RX_FLAG_L4ID_TCP 0x1
-
-#define HNS3_RXD_DMAC_S 0
-#define HNS3_RXD_DMAC_M (0x3 << HNS3_RXD_DMAC_S)
-#define HNS3_RXD_VLAN_S 2
-#define HNS3_RXD_VLAN_M (0x3 << HNS3_RXD_VLAN_S)
-#define HNS3_RXD_L3ID_S 4
-#define HNS3_RXD_L3ID_M (0xf << HNS3_RXD_L3ID_S)
-#define HNS3_RXD_L4ID_S 8
-#define HNS3_RXD_L4ID_M (0xf << HNS3_RXD_L4ID_S)
-#define HNS3_RXD_FRAG_B 12
-#define HNS3_RXD_L2E_B 16
-#define HNS3_RXD_L3E_B 17
-#define HNS3_RXD_L4E_B 18
-#define HNS3_RXD_TRUNCAT_B 19
-#define HNS3_RXD_HOI_B 20
-#define HNS3_RXD_DOI_B 21
-#define HNS3_RXD_OL3E_B 22
-#define HNS3_RXD_OL4E_B 23
-
-#define HNS3_RXD_ODMAC_S 0
-#define HNS3_RXD_ODMAC_M (0x3 << HNS3_RXD_ODMAC_S)
-#define HNS3_RXD_OVLAN_S 2
-#define HNS3_RXD_OVLAN_M (0x3 << HNS3_RXD_OVLAN_S)
-#define HNS3_RXD_OL3ID_S 4
-#define HNS3_RXD_OL3ID_M (0xf << HNS3_RXD_OL3ID_S)
-#define HNS3_RXD_OL4ID_S 8
-#define HNS3_RXD_OL4ID_M (0xf << HNS3_RXD_OL4ID_S)
-#define HNS3_RXD_FBHI_S 12
-#define HNS3_RXD_FBHI_M (0x3 << HNS3_RXD_FBHI_S)
-#define HNS3_RXD_FBLI_S 14
-#define HNS3_RXD_FBLI_M (0x3 << HNS3_RXD_FBLI_S)
-
-#define HNS3_RXD_BDTYPE_S 0
-#define HNS3_RXD_BDTYPE_M (0xf << HNS3_RXD_BDTYPE_S)
-#define HNS3_RXD_VLD_B 4
-#define HNS3_RXD_UDP0_B 5
-#define HNS3_RXD_EXTEND_B 7
-#define HNS3_RXD_FE_B 8
-#define HNS3_RXD_LUM_B 9
-#define HNS3_RXD_CRCP_B 10
-#define HNS3_RXD_L3L4P_B 11
-#define HNS3_RXD_TSIND_S 12
-#define HNS3_RXD_TSIND_M (0x7 << HNS3_RXD_TSIND_S)
-#define HNS3_RXD_LKBK_B 15
-#define HNS3_RXD_HDL_S 16
-#define HNS3_RXD_HDL_M (0x7ff << HNS3_RXD_HDL_S)
-#define HNS3_RXD_HSIND_B 31
-
-#define HNS3_TXD_L3T_S 0
-#define HNS3_TXD_L3T_M (0x3 << HNS3_TXD_L3T_S)
-#define HNS3_TXD_L4T_S 2
-#define HNS3_TXD_L4T_M (0x3 << HNS3_TXD_L4T_S)
-#define HNS3_TXD_L3CS_B 4
-#define HNS3_TXD_L4CS_B 5
-#define HNS3_TXD_VLAN_B 6
-#define HNS3_TXD_TSO_B 7
-
-#define HNS3_TXD_L2LEN_S 8
-#define HNS3_TXD_L2LEN_M (0xff << HNS3_TXD_L2LEN_S)
-#define HNS3_TXD_L3LEN_S 16
-#define HNS3_TXD_L3LEN_M (0xff << HNS3_TXD_L3LEN_S)
-#define HNS3_TXD_L4LEN_S 24
-#define HNS3_TXD_L4LEN_M (0xff << HNS3_TXD_L4LEN_S)
-
-#define HNS3_TXD_OL3T_S 0
-#define HNS3_TXD_OL3T_M (0x3 << HNS3_TXD_OL3T_S)
-#define HNS3_TXD_OVLAN_B 2
-#define HNS3_TXD_MACSEC_B 3
-#define HNS3_TXD_TUNTYPE_S 4
-#define HNS3_TXD_TUNTYPE_M (0xf << HNS3_TXD_TUNTYPE_S)
-
-#define HNS3_TXD_BDTYPE_S 0
-#define HNS3_TXD_BDTYPE_M (0xf << HNS3_TXD_BDTYPE_S)
-#define HNS3_TXD_FE_B 4
-#define HNS3_TXD_SC_S 5
-#define HNS3_TXD_SC_M (0x3 << HNS3_TXD_SC_S)
-#define HNS3_TXD_EXTEND_B 7
-#define HNS3_TXD_VLD_B 8
-#define HNS3_TXD_RI_B 9
-#define HNS3_TXD_RA_B 10
-#define HNS3_TXD_TSYN_B 11
-#define HNS3_TXD_DECTTL_S 12
-#define HNS3_TXD_DECTTL_M (0xf << HNS3_TXD_DECTTL_S)
-
-#define HNS3_TXD_MSS_S 0
-#define HNS3_TXD_MSS_M (0x3fff << HNS3_TXD_MSS_S)
-
-#define HNS3_VECTOR_TX_IRQ BIT_ULL(0)
-#define HNS3_VECTOR_RX_IRQ BIT_ULL(1)
-
-#define HNS3_VECTOR_NOT_INITED 0
-#define HNS3_VECTOR_INITED 1
-
-#define HNS3_MAX_BD_SIZE 65535
-#define HNS3_MAX_BD_PER_FRAG 8
-#define HNS3_MAX_BD_PER_PKT MAX_SKB_FRAGS
-
-#define HNS3_VECTOR_GL0_OFFSET 0x100
-#define HNS3_VECTOR_GL1_OFFSET 0x200
-#define HNS3_VECTOR_GL2_OFFSET 0x300
-#define HNS3_VECTOR_RL_OFFSET 0x900
-#define HNS3_VECTOR_RL_EN_B 6
-
-enum hns3_pkt_l3t_type {
- HNS3_L3T_NONE,
- HNS3_L3T_IPV6,
- HNS3_L3T_IPV4,
- HNS3_L3T_RESERVED
-};
-
-enum hns3_pkt_l4t_type {
- HNS3_L4T_UNKNOWN,
- HNS3_L4T_TCP,
- HNS3_L4T_UDP,
- HNS3_L4T_SCTP
-};
-
-enum hns3_pkt_ol3t_type {
- HNS3_OL3T_NONE,
- HNS3_OL3T_IPV6,
- HNS3_OL3T_IPV4_NO_CSUM,
- HNS3_OL3T_IPV4_CSUM
-};
-
-enum hns3_pkt_tun_type {
- HNS3_TUN_NONE,
- HNS3_TUN_MAC_IN_UDP,
- HNS3_TUN_NVGRE,
- HNS3_TUN_OTHER
-};
-
-/* hardware spec ring buffer format */
-struct __packed hns3_desc {
- __le64 addr;
- union {
- struct {
- __le16 vlan_tag;
- __le16 send_size;
- union {
- __le32 type_cs_vlan_tso_len;
- struct {
- __u8 type_cs_vlan_tso;
- __u8 l2_len;
- __u8 l3_len;
- __u8 l4_len;
- };
- };
- __le16 outer_vlan_tag;
- __le16 tv;
-
- union {
- __le32 ol_type_vlan_len_msec;
- struct {
- __u8 ol_type_vlan_msec;
- __u8 ol2_len;
- __u8 ol3_len;
- __u8 ol4_len;
- };
- };
-
- __le32 paylen;
- __le16 bdtp_fe_sc_vld_ra_ri;
- __le16 mss;
- } tx;
-
- struct {
- __le32 l234_info;
- __le16 pkt_len;
- __le16 size;
-
- __le32 rss_hash;
- __le16 fd_id;
- __le16 vlan_tag;
-
- union {
- __le32 ol_info;
- struct {
- __le16 o_dm_vlan_id_fb;
- __le16 ot_vlan_tag;
- };
- };
-
- __le32 bd_base_info;
- } rx;
- };
-};
-
-struct hns3_desc_cb {
- dma_addr_t dma; /* dma address of this desc */
- void *buf; /* cpu addr for a desc */
-
- /* priv data for the desc, e.g. skb when use with ip stack*/
- void *priv;
- u16 page_offset;
- u16 reuse_flag;
-
- u16 length; /* length of the buffer */
-
- /* desc type, used by the ring user to mark the type of the priv data */
- u16 type;
-};
-
-enum hns3_pkt_l3type {
- HNS3_L3_TYPE_IPV4,
- HNS3_L3_TYPE_IPV6,
- HNS3_L3_TYPE_ARP,
- HNS3_L3_TYPE_RARP,
- HNS3_L3_TYPE_IPV4_OPT,
- HNS3_L3_TYPE_IPV6_EXT,
- HNS3_L3_TYPE_LLDP,
- HNS3_L3_TYPE_BPDU,
- HNS3_L3_TYPE_MAC_PAUSE,
- HNS3_L3_TYPE_PFC_PAUSE,/* 0x9*/
-
- /* reserved for 0xA~0xB*/
-
- HNS3_L3_TYPE_CNM = 0xc,
-
- /* reserved for 0xD~0xE*/
-
- HNS3_L3_TYPE_PARSE_FAIL = 0xf /* must be last */
-};
-
-enum hns3_pkt_l4type {
- HNS3_L4_TYPE_UDP,
- HNS3_L4_TYPE_TCP,
- HNS3_L4_TYPE_GRE,
- HNS3_L4_TYPE_SCTP,
- HNS3_L4_TYPE_IGMP,
- HNS3_L4_TYPE_ICMP,
-
- /* reserved for 0x6~0xE */
-
- HNS3_L4_TYPE_PARSE_FAIL = 0xf /* must be last */
-};
-
-enum hns3_pkt_ol3type {
- HNS3_OL3_TYPE_IPV4 = 0,
- HNS3_OL3_TYPE_IPV6,
- /* reserved for 0x2~0x3 */
- HNS3_OL3_TYPE_IPV4_OPT = 4,
- HNS3_OL3_TYPE_IPV6_EXT,
-
- /* reserved for 0x6~0xE*/
-
- HNS3_OL3_TYPE_PARSE_FAIL = 0xf /* must be last */
-};
-
-enum hns3_pkt_ol4type {
- HNS3_OL4_TYPE_NO_TUN,
- HNS3_OL4_TYPE_MAC_IN_UDP,
- HNS3_OL4_TYPE_NVGRE,
- HNS3_OL4_TYPE_UNKNOWN
-};
-
-struct ring_stats {
- u64 io_err_cnt;
- u64 sw_err_cnt;
- u64 seg_pkt_cnt;
- union {
- struct {
- u64 tx_pkts;
- u64 tx_bytes;
- u64 tx_err_cnt;
- u64 restart_queue;
- u64 tx_busy;
- };
- struct {
- u64 rx_pkts;
- u64 rx_bytes;
- u64 rx_err_cnt;
- u64 reuse_pg_cnt;
- u64 err_pkt_len;
- u64 non_vld_descs;
- u64 err_bd_num;
- u64 l2_err;
- u64 l3l4_csum_err;
- };
- };
-};
-
-struct hns3_enet_ring {
- u8 __iomem *io_base; /* base io address for the ring */
- struct hns3_desc *desc; /* dma map address space */
- struct hns3_desc_cb *desc_cb;
- struct hns3_enet_ring *next;
- struct hns3_enet_tqp_vector *tqp_vector;
- struct hnae3_queue *tqp;
- char ring_name[HNS3_RING_NAME_LEN];
- struct device *dev; /* will be used for DMA mapping of descriptors */
-
- /* statistic */
- struct ring_stats stats;
- struct u64_stats_sync syncp;
-
- dma_addr_t desc_dma_addr;
- u32 buf_size; /* size for hnae_desc->addr, preset by AE */
- u16 desc_num; /* total number of desc */
- u16 max_desc_num_per_pkt;
- u16 max_raw_data_sz_per_desc;
- u16 max_pkt_size;
- int next_to_use; /* idx of next spare desc */
-
- /* idx of lastest sent desc, the ring is empty when equal to
- * next_to_use
- */
- int next_to_clean;
-
- u32 flag; /* ring attribute */
- int irq_init_flag;
-
- int numa_node;
- cpumask_t affinity_mask;
-};
-
-struct hns_queue;
-
-struct hns3_nic_ring_data {
- struct hns3_enet_ring *ring;
- struct napi_struct napi;
- int queue_index;
- int (*poll_one)(struct hns3_nic_ring_data *, int, void *);
- void (*ex_process)(struct hns3_nic_ring_data *, struct sk_buff *);
- void (*fini_process)(struct hns3_nic_ring_data *);
-};
-
-struct hns3_nic_ops {
- int (*fill_desc)(struct hns3_enet_ring *ring, void *priv,
- int size, dma_addr_t dma, int frag_end,
- enum hns_desc_type type);
- int (*maybe_stop_tx)(struct sk_buff **out_skb,
- int *bnum, struct hns3_enet_ring *ring);
- void (*get_rxd_bnum)(u32 bnum_flag, int *out_bnum);
-};
-
-enum hns3_flow_level_range {
- HNS3_FLOW_LOW = 0,
- HNS3_FLOW_MID = 1,
- HNS3_FLOW_HIGH = 2,
- HNS3_FLOW_ULTRA = 3,
-};
-
-enum hns3_link_mode_bits {
- HNS3_LM_FIBRE_BIT = BIT(0),
- HNS3_LM_AUTONEG_BIT = BIT(1),
- HNS3_LM_TP_BIT = BIT(2),
- HNS3_LM_PAUSE_BIT = BIT(3),
- HNS3_LM_BACKPLANE_BIT = BIT(4),
- HNS3_LM_10BASET_HALF_BIT = BIT(5),
- HNS3_LM_10BASET_FULL_BIT = BIT(6),
- HNS3_LM_100BASET_HALF_BIT = BIT(7),
- HNS3_LM_100BASET_FULL_BIT = BIT(8),
- HNS3_LM_1000BASET_FULL_BIT = BIT(9),
- HNS3_LM_10000BASEKR_FULL_BIT = BIT(10),
- HNS3_LM_25000BASEKR_FULL_BIT = BIT(11),
- HNS3_LM_40000BASELR4_FULL_BIT = BIT(12),
- HNS3_LM_50000BASEKR2_FULL_BIT = BIT(13),
- HNS3_LM_100000BASEKR4_FULL_BIT = BIT(14),
- HNS3_LM_COUNT = 15
-};
-
-#define HNS3_INT_GL_50K 0x000A
-#define HNS3_INT_GL_20K 0x0019
-#define HNS3_INT_GL_18K 0x001B
-#define HNS3_INT_GL_8K 0x003E
-
-struct hns3_enet_ring_group {
- /* array of pointers to rings */
- struct hns3_enet_ring *ring;
- u64 total_bytes; /* total bytes processed this group */
- u64 total_packets; /* total packets processed this group */
- u16 count;
- enum hns3_flow_level_range flow_level;
- u16 int_gl;
-};
-
-struct hns3_enet_tqp_vector {
- struct hnae3_handle *handle;
- u8 __iomem *mask_addr;
- int vector_irq;
- int irq_init_flag;
-
- u16 idx; /* index in the TQP vector array per handle. */
-
- struct napi_struct napi;
-
- struct hns3_enet_ring_group rx_group;
- struct hns3_enet_ring_group tx_group;
-
- u16 num_tqps; /* total number of tqps in TQP vector */
-
- cpumask_t affinity_mask;
- char name[HNAE3_INT_NAME_LEN];
-
- /* when 0 should adjust interrupt coalesce parameter */
- u8 int_adapt_down;
-} ____cacheline_internodealigned_in_smp;
-
-enum hns3_udp_tnl_type {
- HNS3_UDP_TNL_VXLAN,
- HNS3_UDP_TNL_GENEVE,
- HNS3_UDP_TNL_MAX,
-};
-
-struct hns3_udp_tunnel {
- u16 dst_port;
- int used;
-};
-
-struct hns3_nic_priv {
- struct hnae3_handle *ae_handle;
- u32 enet_ver;
- u32 port_id;
- struct net_device *netdev;
- struct device *dev;
- struct hns3_nic_ops ops;
-
- /**
- * the cb for nic to manage the ring buffer, the first half of the
- * array is for tx_ring and vice versa for the second half
- */
- struct hns3_nic_ring_data *ring_data;
- struct hns3_enet_tqp_vector *tqp_vector;
- u16 vector_num;
-
- /* The most recently read link state */
- int link;
- u64 tx_timeout_count;
- enum hnae3_reset_type reset_level;
- unsigned long last_reset_time;
-
- unsigned long state;
-
- struct timer_list service_timer;
-
- struct work_struct service_task;
-
- struct notifier_block notifier_block;
- /* Vxlan/Geneve information */
- struct hns3_udp_tunnel udp_tnl[HNS3_UDP_TNL_MAX];
-};
-
-union l3_hdr_info {
- struct iphdr *v4;
- struct ipv6hdr *v6;
- unsigned char *hdr;
-};
-
-union l4_hdr_info {
- struct tcphdr *tcp;
- struct udphdr *udp;
- unsigned char *hdr;
-};
-
-/* the distance between [begin, end) in a ring buffer
- * note: there is a unuse slot between the begin and the end
- */
-static inline int ring_dist(struct hns3_enet_ring *ring, int begin, int end)
-{
- return (end - begin + ring->desc_num) % ring->desc_num;
-}
-
-static inline int ring_space(struct hns3_enet_ring *ring)
-{
- return ring->desc_num -
- ring_dist(ring, ring->next_to_clean, ring->next_to_use) - 1;
-}
-
-static inline int is_ring_empty(struct hns3_enet_ring *ring)
-{
- return ring->next_to_use == ring->next_to_clean;
-}
-
-static inline void hns3_write_reg(void __iomem *base, u32 reg, u32 value)
-{
- u8 __iomem *reg_addr = READ_ONCE(base);
-
- writel(value, reg_addr + reg);
-}
-
-#define hns3_write_dev(a, reg, value) \
- hns3_write_reg((a)->io_base, (reg), (value))
-
-#define hnae_queue_xmit(tqp, buf_num) writel_relaxed(buf_num, \
- (tqp)->io_base + HNS3_RING_TX_RING_TAIL_REG)
-
-#define ring_to_dev(ring) (&(ring)->tqp->handle->pdev->dev)
-
-#define ring_to_dma_dir(ring) (HNAE3_IS_TX_RING(ring) ? \
- DMA_TO_DEVICE : DMA_FROM_DEVICE)
-
-#define tx_ring_data(priv, idx) ((priv)->ring_data[idx])
-
-#define hnae_buf_size(_ring) ((_ring)->buf_size)
-#define hnae_page_order(_ring) (get_order(hnae_buf_size(_ring)))
-#define hnae_page_size(_ring) (PAGE_SIZE << hnae_page_order(_ring))
-
-/* iterator for handling rings in ring group */
-#define hns3_for_each_ring(pos, head) \
- for (pos = (head).ring; pos; pos = pos->next)
-
-#define hns3_get_handle(ndev) \
- (((struct hns3_nic_priv *)netdev_priv(ndev))->ae_handle)
-
-void hns3_ethtool_set_ops(struct net_device *netdev);
-
-bool hns3_clean_tx_ring(struct hns3_enet_ring *ring, int budget);
-int hns3_init_all_ring(struct hns3_nic_priv *priv);
-int hns3_uninit_all_ring(struct hns3_nic_priv *priv);
-netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb, struct net_device *netdev);
-int hns3_clean_rx_ring(
- struct hns3_enet_ring *ring, int budget,
- void (*rx_fn)(struct hns3_enet_ring *, struct sk_buff *));
-
-#ifdef CONFIG_HNS3_DCB
-void hns3_dcbnl_setup(struct hnae3_handle *handle);
-#else
-static inline void hns3_dcbnl_setup(struct hnae3_handle *handle) {}
-#endif
-
-#endif
+++ /dev/null
-/*
- * Copyright (c) 2016~2017 Hisilicon Limited.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#include <linux/etherdevice.h>
-#include <linux/string.h>
-#include <linux/phy.h>
-
-#include "hns3_enet.h"
-
-struct hns3_stats {
- char stats_string[ETH_GSTRING_LEN];
- int stats_size;
- int stats_offset;
-};
-
-/* tqp related stats */
-#define HNS3_TQP_STAT(_string, _member) { \
- .stats_string = _string, \
- .stats_size = FIELD_SIZEOF(struct ring_stats, _member), \
- .stats_offset = offsetof(struct hns3_enet_ring, stats), \
-} \
-
-static const struct hns3_stats hns3_txq_stats[] = {
- /* Tx per-queue statistics */
- HNS3_TQP_STAT("tx_io_err_cnt", io_err_cnt),
- HNS3_TQP_STAT("tx_sw_err_cnt", sw_err_cnt),
- HNS3_TQP_STAT("tx_seg_pkt_cnt", seg_pkt_cnt),
- HNS3_TQP_STAT("tx_pkts", tx_pkts),
- HNS3_TQP_STAT("tx_bytes", tx_bytes),
- HNS3_TQP_STAT("tx_err_cnt", tx_err_cnt),
- HNS3_TQP_STAT("tx_restart_queue", restart_queue),
- HNS3_TQP_STAT("tx_busy", tx_busy),
-};
-
-#define HNS3_TXQ_STATS_COUNT ARRAY_SIZE(hns3_txq_stats)
-
-static const struct hns3_stats hns3_rxq_stats[] = {
- /* Rx per-queue statistics */
- HNS3_TQP_STAT("rx_io_err_cnt", io_err_cnt),
- HNS3_TQP_STAT("rx_sw_err_cnt", sw_err_cnt),
- HNS3_TQP_STAT("rx_seg_pkt_cnt", seg_pkt_cnt),
- HNS3_TQP_STAT("rx_pkts", rx_pkts),
- HNS3_TQP_STAT("rx_bytes", rx_bytes),
- HNS3_TQP_STAT("rx_err_cnt", rx_err_cnt),
- HNS3_TQP_STAT("rx_reuse_pg_cnt", reuse_pg_cnt),
- HNS3_TQP_STAT("rx_err_pkt_len", err_pkt_len),
- HNS3_TQP_STAT("rx_non_vld_descs", non_vld_descs),
- HNS3_TQP_STAT("rx_err_bd_num", err_bd_num),
- HNS3_TQP_STAT("rx_l2_err", l2_err),
- HNS3_TQP_STAT("rx_l3l4_csum_err", l3l4_csum_err),
-};
-
-#define HNS3_RXQ_STATS_COUNT ARRAY_SIZE(hns3_rxq_stats)
-
-#define HNS3_TQP_STATS_COUNT (HNS3_TXQ_STATS_COUNT + HNS3_RXQ_STATS_COUNT)
-
-#define HNS3_SELF_TEST_TPYE_NUM 1
-#define HNS3_NIC_LB_TEST_PKT_NUM 1
-#define HNS3_NIC_LB_TEST_RING_ID 0
-#define HNS3_NIC_LB_TEST_PACKET_SIZE 128
-
-/* Nic loopback test err */
-#define HNS3_NIC_LB_TEST_NO_MEM_ERR 1
-#define HNS3_NIC_LB_TEST_TX_CNT_ERR 2
-#define HNS3_NIC_LB_TEST_RX_CNT_ERR 3
-
-struct hns3_link_mode_mapping {
- u32 hns3_link_mode;
- u32 ethtool_link_mode;
-};
-
-static const struct hns3_link_mode_mapping hns3_lm_map[] = {
- {HNS3_LM_FIBRE_BIT, ETHTOOL_LINK_MODE_FIBRE_BIT},
- {HNS3_LM_AUTONEG_BIT, ETHTOOL_LINK_MODE_Autoneg_BIT},
- {HNS3_LM_TP_BIT, ETHTOOL_LINK_MODE_TP_BIT},
- {HNS3_LM_PAUSE_BIT, ETHTOOL_LINK_MODE_Pause_BIT},
- {HNS3_LM_BACKPLANE_BIT, ETHTOOL_LINK_MODE_Backplane_BIT},
- {HNS3_LM_10BASET_HALF_BIT, ETHTOOL_LINK_MODE_10baseT_Half_BIT},
- {HNS3_LM_10BASET_FULL_BIT, ETHTOOL_LINK_MODE_10baseT_Full_BIT},
- {HNS3_LM_100BASET_HALF_BIT, ETHTOOL_LINK_MODE_100baseT_Half_BIT},
- {HNS3_LM_100BASET_FULL_BIT, ETHTOOL_LINK_MODE_100baseT_Full_BIT},
- {HNS3_LM_1000BASET_FULL_BIT, ETHTOOL_LINK_MODE_1000baseT_Full_BIT},
-};
-
-static int hns3_lp_setup(struct net_device *ndev, enum hnae3_loop loop)
-{
- struct hnae3_handle *h = hns3_get_handle(ndev);
- int ret;
-
- if (!h->ae_algo->ops->set_loopback ||
- !h->ae_algo->ops->set_promisc_mode)
- return -EOPNOTSUPP;
-
- switch (loop) {
- case HNAE3_MAC_INTER_LOOP_MAC:
- ret = h->ae_algo->ops->set_loopback(h, loop, true);
- break;
- case HNAE3_MAC_LOOP_NONE:
- ret = h->ae_algo->ops->set_loopback(h,
- HNAE3_MAC_INTER_LOOP_MAC, false);
- break;
- default:
- ret = -ENOTSUPP;
- break;
- }
-
- if (ret)
- return ret;
-
- if (loop == HNAE3_MAC_LOOP_NONE)
- h->ae_algo->ops->set_promisc_mode(h, ndev->flags & IFF_PROMISC);
- else
- h->ae_algo->ops->set_promisc_mode(h, 1);
-
- return ret;
-}
-
-static int hns3_lp_up(struct net_device *ndev, enum hnae3_loop loop_mode)
-{
- struct hnae3_handle *h = hns3_get_handle(ndev);
- int ret;
-
- if (!h->ae_algo->ops->start)
- return -EOPNOTSUPP;
-
- ret = h->ae_algo->ops->start(h);
- if (ret) {
- netdev_err(ndev,
- "hns3_lb_up ae start return error: %d\n", ret);
- return ret;
- }
-
- ret = hns3_lp_setup(ndev, loop_mode);
- usleep_range(10000, 20000);
-
- return ret;
-}
-
-static int hns3_lp_down(struct net_device *ndev)
-{
- struct hnae3_handle *h = hns3_get_handle(ndev);
- int ret;
-
- if (!h->ae_algo->ops->stop)
- return -EOPNOTSUPP;
-
- ret = hns3_lp_setup(ndev, HNAE3_MAC_LOOP_NONE);
- if (ret) {
- netdev_err(ndev, "lb_setup return error: %d\n", ret);
- return ret;
- }
-
- h->ae_algo->ops->stop(h);
- usleep_range(10000, 20000);
-
- return 0;
-}
-
-static void hns3_lp_setup_skb(struct sk_buff *skb)
-{
- struct net_device *ndev = skb->dev;
- unsigned char *packet;
- struct ethhdr *ethh;
- unsigned int i;
-
- skb_reserve(skb, NET_IP_ALIGN);
- ethh = skb_put(skb, sizeof(struct ethhdr));
- packet = skb_put(skb, HNS3_NIC_LB_TEST_PACKET_SIZE);
-
- memcpy(ethh->h_dest, ndev->dev_addr, ETH_ALEN);
- eth_zero_addr(ethh->h_source);
- ethh->h_proto = htons(ETH_P_ARP);
- skb_reset_mac_header(skb);
-
- for (i = 0; i < HNS3_NIC_LB_TEST_PACKET_SIZE; i++)
- packet[i] = (unsigned char)(i & 0xff);
-}
-
-static void hns3_lb_check_skb_data(struct hns3_enet_ring *ring,
- struct sk_buff *skb)
-{
- struct hns3_enet_tqp_vector *tqp_vector = ring->tqp_vector;
- unsigned char *packet = skb->data;
- u32 i;
-
- for (i = 0; i < skb->len; i++)
- if (packet[i] != (unsigned char)(i & 0xff))
- break;
-
- /* The packet is correctly received */
- if (i == skb->len)
- tqp_vector->rx_group.total_packets++;
- else
- print_hex_dump(KERN_ERR, "selftest:", DUMP_PREFIX_OFFSET, 16, 1,
- skb->data, skb->len, true);
-
- dev_kfree_skb_any(skb);
-}
-
-static u32 hns3_lb_check_rx_ring(struct hns3_nic_priv *priv, u32 budget)
-{
- struct hnae3_handle *h = priv->ae_handle;
- struct hnae3_knic_private_info *kinfo;
- u32 i, rcv_good_pkt_total = 0;
-
- kinfo = &h->kinfo;
- for (i = kinfo->num_tqps; i < kinfo->num_tqps * 2; i++) {
- struct hns3_enet_ring *ring = priv->ring_data[i].ring;
- struct hns3_enet_ring_group *rx_group;
- u64 pre_rx_pkt;
-
- rx_group = &ring->tqp_vector->rx_group;
- pre_rx_pkt = rx_group->total_packets;
-
- hns3_clean_rx_ring(ring, budget, hns3_lb_check_skb_data);
-
- rcv_good_pkt_total += (rx_group->total_packets - pre_rx_pkt);
- rx_group->total_packets = pre_rx_pkt;
- }
- return rcv_good_pkt_total;
-}
-
-static void hns3_lb_clear_tx_ring(struct hns3_nic_priv *priv, u32 start_ringid,
- u32 end_ringid, u32 budget)
-{
- u32 i;
-
- for (i = start_ringid; i <= end_ringid; i++) {
- struct hns3_enet_ring *ring = priv->ring_data[i].ring;
-
- hns3_clean_tx_ring(ring, budget);
- }
-}
-
-/**
- * hns3_lp_run_test - run loopback test
- * @ndev: net device
- * @mode: loopback type
- */
-static int hns3_lp_run_test(struct net_device *ndev, enum hnae3_loop mode)
-{
- struct hns3_nic_priv *priv = netdev_priv(ndev);
- struct sk_buff *skb;
- u32 i, good_cnt;
- int ret_val = 0;
-
- skb = alloc_skb(HNS3_NIC_LB_TEST_PACKET_SIZE + ETH_HLEN + NET_IP_ALIGN,
- GFP_KERNEL);
- if (!skb)
- return HNS3_NIC_LB_TEST_NO_MEM_ERR;
-
- skb->dev = ndev;
- hns3_lp_setup_skb(skb);
- skb->queue_mapping = HNS3_NIC_LB_TEST_RING_ID;
-
- good_cnt = 0;
- for (i = 0; i < HNS3_NIC_LB_TEST_PKT_NUM; i++) {
- netdev_tx_t tx_ret;
-
- skb_get(skb);
- tx_ret = hns3_nic_net_xmit(skb, ndev);
- if (tx_ret == NETDEV_TX_OK)
- good_cnt++;
- else
- netdev_err(ndev, "hns3_lb_run_test xmit failed: %d\n",
- tx_ret);
- }
- if (good_cnt != HNS3_NIC_LB_TEST_PKT_NUM) {
- ret_val = HNS3_NIC_LB_TEST_TX_CNT_ERR;
- netdev_err(ndev, "mode %d sent fail, cnt=0x%x, budget=0x%x\n",
- mode, good_cnt, HNS3_NIC_LB_TEST_PKT_NUM);
- goto out;
- }
-
- /* Allow 200 milliseconds for packets to go from Tx to Rx */
- msleep(200);
-
- good_cnt = hns3_lb_check_rx_ring(priv, HNS3_NIC_LB_TEST_PKT_NUM);
- if (good_cnt != HNS3_NIC_LB_TEST_PKT_NUM) {
- ret_val = HNS3_NIC_LB_TEST_RX_CNT_ERR;
- netdev_err(ndev, "mode %d recv fail, cnt=0x%x, budget=0x%x\n",
- mode, good_cnt, HNS3_NIC_LB_TEST_PKT_NUM);
- }
-
-out:
- hns3_lb_clear_tx_ring(priv, HNS3_NIC_LB_TEST_RING_ID,
- HNS3_NIC_LB_TEST_RING_ID,
- HNS3_NIC_LB_TEST_PKT_NUM);
-
- kfree_skb(skb);
- return ret_val;
-}
-
-/**
- * hns3_nic_self_test - self test
- * @ndev: net device
- * @eth_test: test cmd
- * @data: test result
- */
-static void hns3_self_test(struct net_device *ndev,
- struct ethtool_test *eth_test, u64 *data)
-{
- struct hns3_nic_priv *priv = netdev_priv(ndev);
- struct hnae3_handle *h = priv->ae_handle;
- int st_param[HNS3_SELF_TEST_TPYE_NUM][2];
- bool if_running = netif_running(ndev);
- int test_index = 0;
- u32 i;
-
- /* Only do offline selftest, or pass by default */
- if (eth_test->flags != ETH_TEST_FL_OFFLINE)
- return;
-
- st_param[HNAE3_MAC_INTER_LOOP_MAC][0] = HNAE3_MAC_INTER_LOOP_MAC;
- st_param[HNAE3_MAC_INTER_LOOP_MAC][1] =
- h->flags & HNAE3_SUPPORT_MAC_LOOPBACK;
-
- if (if_running)
- dev_close(ndev);
-
- set_bit(HNS3_NIC_STATE_TESTING, &priv->state);
-
- for (i = 0; i < HNS3_SELF_TEST_TPYE_NUM; i++) {
- enum hnae3_loop loop_type = (enum hnae3_loop)st_param[i][0];
-
- if (!st_param[i][1])
- continue;
-
- data[test_index] = hns3_lp_up(ndev, loop_type);
- if (!data[test_index]) {
- data[test_index] = hns3_lp_run_test(ndev, loop_type);
- hns3_lp_down(ndev);
- }
-
- if (data[test_index])
- eth_test->flags |= ETH_TEST_FL_FAILED;
-
- test_index++;
- }
-
- clear_bit(HNS3_NIC_STATE_TESTING, &priv->state);
-
- if (if_running)
- dev_open(ndev);
-}
-
-static void hns3_driv_to_eth_caps(u32 caps, struct ethtool_link_ksettings *cmd,
- bool is_advertised)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(hns3_lm_map); i++) {
- if (!(caps & hns3_lm_map[i].hns3_link_mode))
- continue;
-
- if (is_advertised)
- __set_bit(hns3_lm_map[i].ethtool_link_mode,
- cmd->link_modes.advertising);
- else
- __set_bit(hns3_lm_map[i].ethtool_link_mode,
- cmd->link_modes.supported);
- }
-}
-
-static int hns3_get_sset_count(struct net_device *netdev, int stringset)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
- const struct hnae3_ae_ops *ops = h->ae_algo->ops;
-
- if (!ops->get_sset_count)
- return -EOPNOTSUPP;
-
- switch (stringset) {
- case ETH_SS_STATS:
- return ((HNS3_TQP_STATS_COUNT * h->kinfo.num_tqps) +
- ops->get_sset_count(h, stringset));
-
- case ETH_SS_TEST:
- return ops->get_sset_count(h, stringset);
- }
-
- return 0;
-}
-
-static void *hns3_update_strings(u8 *data, const struct hns3_stats *stats,
- u32 stat_count, u32 num_tqps)
-{
-#define MAX_PREFIX_SIZE (8 + 4)
- u32 size_left;
- u32 i, j;
- u32 n1;
-
- for (i = 0; i < num_tqps; i++) {
- for (j = 0; j < stat_count; j++) {
- data[ETH_GSTRING_LEN - 1] = '\0';
-
- /* first, prepend the prefix string */
- n1 = snprintf(data, MAX_PREFIX_SIZE, "rcb_q%d_", i);
- n1 = min_t(uint, n1, MAX_PREFIX_SIZE - 1);
- size_left = (ETH_GSTRING_LEN - 1) - n1;
-
- /* now, concatenate the stats string to it */
- strncat(data, stats[j].stats_string, size_left);
- data += ETH_GSTRING_LEN;
- }
- }
-
- return data;
-}
-
-static u8 *hns3_get_strings_tqps(struct hnae3_handle *handle, u8 *data)
-{
- struct hnae3_knic_private_info *kinfo = &handle->kinfo;
-
- /* get strings for Tx */
- data = hns3_update_strings(data, hns3_txq_stats, HNS3_TXQ_STATS_COUNT,
- kinfo->num_tqps);
-
- /* get strings for Rx */
- data = hns3_update_strings(data, hns3_rxq_stats, HNS3_RXQ_STATS_COUNT,
- kinfo->num_tqps);
-
- return data;
-}
-
-static void hns3_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
- const struct hnae3_ae_ops *ops = h->ae_algo->ops;
- char *buff = (char *)data;
-
- if (!ops->get_strings)
- return;
-
- switch (stringset) {
- case ETH_SS_STATS:
- buff = hns3_get_strings_tqps(h, buff);
- h->ae_algo->ops->get_strings(h, stringset, (u8 *)buff);
- break;
- case ETH_SS_TEST:
- ops->get_strings(h, stringset, data);
- break;
- }
-}
-
-static u64 *hns3_get_stats_tqps(struct hnae3_handle *handle, u64 *data)
-{
- struct hns3_nic_priv *nic_priv = (struct hns3_nic_priv *)handle->priv;
- struct hnae3_knic_private_info *kinfo = &handle->kinfo;
- struct hns3_enet_ring *ring;
- u8 *stat;
- u32 i;
-
- /* get stats for Tx */
- for (i = 0; i < kinfo->num_tqps; i++) {
- ring = nic_priv->ring_data[i].ring;
- for (i = 0; i < HNS3_TXQ_STATS_COUNT; i++) {
- stat = (u8 *)ring + hns3_txq_stats[i].stats_offset;
- *data++ = *(u64 *)stat;
- }
- }
-
- /* get stats for Rx */
- for (i = 0; i < kinfo->num_tqps; i++) {
- ring = nic_priv->ring_data[i + kinfo->num_tqps].ring;
- for (i = 0; i < HNS3_RXQ_STATS_COUNT; i++) {
- stat = (u8 *)ring + hns3_rxq_stats[i].stats_offset;
- *data++ = *(u64 *)stat;
- }
- }
-
- return data;
-}
-
-/* hns3_get_stats - get detail statistics.
- * @netdev: net device
- * @stats: statistics info.
- * @data: statistics data.
- */
-static void hns3_get_stats(struct net_device *netdev,
- struct ethtool_stats *stats, u64 *data)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
- u64 *p = data;
-
- if (!h->ae_algo->ops->get_stats || !h->ae_algo->ops->update_stats) {
- netdev_err(netdev, "could not get any statistics\n");
- return;
- }
-
- h->ae_algo->ops->update_stats(h, &netdev->stats);
-
- /* get per-queue stats */
- p = hns3_get_stats_tqps(h, p);
-
- /* get MAC & other misc hardware stats */
- h->ae_algo->ops->get_stats(h, p);
-}
-
-static void hns3_get_drvinfo(struct net_device *netdev,
- struct ethtool_drvinfo *drvinfo)
-{
- struct hns3_nic_priv *priv = netdev_priv(netdev);
- struct hnae3_handle *h = priv->ae_handle;
-
- strncpy(drvinfo->version, hns3_driver_version,
- sizeof(drvinfo->version));
- drvinfo->version[sizeof(drvinfo->version) - 1] = '\0';
-
- strncpy(drvinfo->driver, h->pdev->driver->name,
- sizeof(drvinfo->driver));
- drvinfo->driver[sizeof(drvinfo->driver) - 1] = '\0';
-
- strncpy(drvinfo->bus_info, pci_name(h->pdev),
- sizeof(drvinfo->bus_info));
- drvinfo->bus_info[ETHTOOL_BUSINFO_LEN - 1] = '\0';
-
- snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), "0x%08x",
- priv->ae_handle->ae_algo->ops->get_fw_version(h));
-}
-
-static u32 hns3_get_link(struct net_device *netdev)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
-
- if (h->ae_algo && h->ae_algo->ops && h->ae_algo->ops->get_status)
- return h->ae_algo->ops->get_status(h);
- else
- return 0;
-}
-
-static void hns3_get_ringparam(struct net_device *netdev,
- struct ethtool_ringparam *param)
-{
- struct hns3_nic_priv *priv = netdev_priv(netdev);
- struct hnae3_handle *h = priv->ae_handle;
- int queue_num = h->kinfo.num_tqps;
-
- param->tx_max_pending = HNS3_RING_MAX_PENDING;
- param->rx_max_pending = HNS3_RING_MAX_PENDING;
-
- param->tx_pending = priv->ring_data[0].ring->desc_num;
- param->rx_pending = priv->ring_data[queue_num].ring->desc_num;
-}
-
-static void hns3_get_pauseparam(struct net_device *netdev,
- struct ethtool_pauseparam *param)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
-
- if (h->ae_algo && h->ae_algo->ops && h->ae_algo->ops->get_pauseparam)
- h->ae_algo->ops->get_pauseparam(h, ¶m->autoneg,
- ¶m->rx_pause, ¶m->tx_pause);
-}
-
-static int hns3_get_link_ksettings(struct net_device *netdev,
- struct ethtool_link_ksettings *cmd)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
- u32 supported_caps;
- u32 advertised_caps;
- u8 media_type = HNAE3_MEDIA_TYPE_UNKNOWN;
- u8 link_stat;
-
- if (!h->ae_algo || !h->ae_algo->ops)
- return -EOPNOTSUPP;
-
- /* 1.auto_neg & speed & duplex from cmd */
- if (netdev->phydev)
- phy_ethtool_ksettings_get(netdev->phydev, cmd);
- else if (h->ae_algo->ops->get_ksettings_an_result)
- h->ae_algo->ops->get_ksettings_an_result(h,
- &cmd->base.autoneg,
- &cmd->base.speed,
- &cmd->base.duplex);
- else
- return -EOPNOTSUPP;
-
- link_stat = hns3_get_link(netdev);
- if (!link_stat) {
- cmd->base.speed = SPEED_UNKNOWN;
- cmd->base.duplex = DUPLEX_UNKNOWN;
- }
-
- /* 2.media_type get from bios parameter block */
- if (h->ae_algo->ops->get_media_type) {
- h->ae_algo->ops->get_media_type(h, &media_type);
-
- switch (media_type) {
- case HNAE3_MEDIA_TYPE_FIBER:
- cmd->base.port = PORT_FIBRE;
- supported_caps = HNS3_LM_FIBRE_BIT |
- HNS3_LM_AUTONEG_BIT |
- HNS3_LM_PAUSE_BIT |
- HNS3_LM_1000BASET_FULL_BIT;
-
- advertised_caps = supported_caps;
- break;
- case HNAE3_MEDIA_TYPE_COPPER:
- cmd->base.port = PORT_TP;
- supported_caps = HNS3_LM_TP_BIT |
- HNS3_LM_AUTONEG_BIT |
- HNS3_LM_PAUSE_BIT |
- HNS3_LM_1000BASET_FULL_BIT |
- HNS3_LM_100BASET_FULL_BIT |
- HNS3_LM_100BASET_HALF_BIT |
- HNS3_LM_10BASET_FULL_BIT |
- HNS3_LM_10BASET_HALF_BIT;
- advertised_caps = supported_caps;
- break;
- case HNAE3_MEDIA_TYPE_BACKPLANE:
- cmd->base.port = PORT_NONE;
- supported_caps = HNS3_LM_BACKPLANE_BIT |
- HNS3_LM_PAUSE_BIT |
- HNS3_LM_AUTONEG_BIT |
- HNS3_LM_1000BASET_FULL_BIT |
- HNS3_LM_100BASET_FULL_BIT |
- HNS3_LM_100BASET_HALF_BIT |
- HNS3_LM_10BASET_FULL_BIT |
- HNS3_LM_10BASET_HALF_BIT;
-
- advertised_caps = supported_caps;
- break;
- case HNAE3_MEDIA_TYPE_UNKNOWN:
- default:
- cmd->base.port = PORT_OTHER;
- supported_caps = 0;
- advertised_caps = 0;
- break;
- }
-
- if (!cmd->base.autoneg)
- advertised_caps &= ~HNS3_LM_AUTONEG_BIT;
-
- /* now, map driver link modes to ethtool link modes */
- hns3_driv_to_eth_caps(supported_caps, cmd, false);
- hns3_driv_to_eth_caps(advertised_caps, cmd, true);
- }
-
- /* 3.mdix_ctrl&mdix get from phy reg */
- if (h->ae_algo->ops->get_mdix_mode)
- h->ae_algo->ops->get_mdix_mode(h, &cmd->base.eth_tp_mdix_ctrl,
- &cmd->base.eth_tp_mdix);
- /* 4.mdio_support */
- cmd->base.mdio_support = ETH_MDIO_SUPPORTS_C22;
-
- return 0;
-}
-
-static int hns3_set_link_ksettings(struct net_device *netdev,
- const struct ethtool_link_ksettings *cmd)
-{
- /* Only support ksettings_set for netdev with phy attached for now */
- if (netdev->phydev)
- return phy_ethtool_ksettings_set(netdev->phydev, cmd);
-
- return -EOPNOTSUPP;
-}
-
-static u32 hns3_get_rss_key_size(struct net_device *netdev)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
-
- if (!h->ae_algo || !h->ae_algo->ops ||
- !h->ae_algo->ops->get_rss_key_size)
- return -EOPNOTSUPP;
-
- return h->ae_algo->ops->get_rss_key_size(h);
-}
-
-static u32 hns3_get_rss_indir_size(struct net_device *netdev)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
-
- if (!h->ae_algo || !h->ae_algo->ops ||
- !h->ae_algo->ops->get_rss_indir_size)
- return -EOPNOTSUPP;
-
- return h->ae_algo->ops->get_rss_indir_size(h);
-}
-
-static int hns3_get_rss(struct net_device *netdev, u32 *indir, u8 *key,
- u8 *hfunc)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
-
- if (!h->ae_algo || !h->ae_algo->ops || !h->ae_algo->ops->get_rss)
- return -EOPNOTSUPP;
-
- return h->ae_algo->ops->get_rss(h, indir, key, hfunc);
-}
-
-static int hns3_set_rss(struct net_device *netdev, const u32 *indir,
- const u8 *key, const u8 hfunc)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
-
- if (!h->ae_algo || !h->ae_algo->ops || !h->ae_algo->ops->set_rss)
- return -EOPNOTSUPP;
-
- /* currently we only support Toeplitz hash */
- if ((hfunc != ETH_RSS_HASH_NO_CHANGE) && (hfunc != ETH_RSS_HASH_TOP)) {
- netdev_err(netdev,
- "hash func not supported (only Toeplitz hash)\n");
- return -EOPNOTSUPP;
- }
- if (!indir) {
- netdev_err(netdev,
- "set rss failed for indir is empty\n");
- return -EOPNOTSUPP;
- }
-
- return h->ae_algo->ops->set_rss(h, indir, key, hfunc);
-}
-
-static int hns3_get_rxnfc(struct net_device *netdev,
- struct ethtool_rxnfc *cmd,
- u32 *rule_locs)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
-
- if (!h->ae_algo || !h->ae_algo->ops || !h->ae_algo->ops->get_rss_tuple)
- return -EOPNOTSUPP;
-
- switch (cmd->cmd) {
- case ETHTOOL_GRXRINGS:
- cmd->data = h->kinfo.num_tc * h->kinfo.rss_size;
- break;
- case ETHTOOL_GRXFH:
- return h->ae_algo->ops->get_rss_tuple(h, cmd);
- default:
- return -EOPNOTSUPP;
- }
-
- return 0;
-}
-
-static int hns3_change_all_ring_bd_num(struct hns3_nic_priv *priv,
- u32 new_desc_num)
-{
- struct hnae3_handle *h = priv->ae_handle;
- int i;
-
- h->kinfo.num_desc = new_desc_num;
-
- for (i = 0; i < h->kinfo.num_tqps * 2; i++)
- priv->ring_data[i].ring->desc_num = new_desc_num;
-
- return hns3_init_all_ring(priv);
-}
-
-static int hns3_set_ringparam(struct net_device *ndev,
- struct ethtool_ringparam *param)
-{
- struct hns3_nic_priv *priv = netdev_priv(ndev);
- struct hnae3_handle *h = priv->ae_handle;
- bool if_running = netif_running(ndev);
- u32 old_desc_num, new_desc_num;
- int ret;
-
- if (param->rx_mini_pending || param->rx_jumbo_pending)
- return -EINVAL;
-
- if (param->tx_pending != param->rx_pending) {
- netdev_err(ndev,
- "Descriptors of tx and rx must be equal");
- return -EINVAL;
- }
-
- if (param->tx_pending > HNS3_RING_MAX_PENDING ||
- param->tx_pending < HNS3_RING_MIN_PENDING) {
- netdev_err(ndev,
- "Descriptors requested (Tx/Rx: %d) out of range [%d-%d]\n",
- param->tx_pending, HNS3_RING_MIN_PENDING,
- HNS3_RING_MAX_PENDING);
- return -EINVAL;
- }
-
- new_desc_num = param->tx_pending;
-
- /* Hardware requires that its descriptors must be multiple of eight */
- new_desc_num = ALIGN(new_desc_num, HNS3_RING_BD_MULTIPLE);
- old_desc_num = h->kinfo.num_desc;
- if (old_desc_num == new_desc_num)
- return 0;
-
- netdev_info(ndev,
- "Changing descriptor count from %d to %d.\n",
- old_desc_num, new_desc_num);
-
- if (if_running)
- dev_close(ndev);
-
- ret = hns3_uninit_all_ring(priv);
- if (ret)
- return ret;
-
- ret = hns3_change_all_ring_bd_num(priv, new_desc_num);
- if (ret) {
- ret = hns3_change_all_ring_bd_num(priv, old_desc_num);
- if (ret) {
- netdev_err(ndev,
- "Revert to old bd num fail, ret=%d.\n", ret);
- return ret;
- }
- }
-
- if (if_running)
- ret = dev_open(ndev);
-
- return ret;
-}
-
-static int hns3_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
-{
- struct hnae3_handle *h = hns3_get_handle(netdev);
-
- if (!h->ae_algo || !h->ae_algo->ops || !h->ae_algo->ops->set_rss_tuple)
- return -EOPNOTSUPP;
-
- switch (cmd->cmd) {
- case ETHTOOL_SRXFH:
- return h->ae_algo->ops->set_rss_tuple(h, cmd);
- default:
- return -EOPNOTSUPP;
- }
-}
-
-static int hns3_nway_reset(struct net_device *netdev)
-{
- struct phy_device *phy = netdev->phydev;
-
- if (!netif_running(netdev))
- return 0;
-
- /* Only support nway_reset for netdev with phy attached for now */
- if (!phy)
- return -EOPNOTSUPP;
-
- if (phy->autoneg != AUTONEG_ENABLE)
- return -EINVAL;
-
- return genphy_restart_aneg(phy);
-}
-
-static const struct ethtool_ops hns3_ethtool_ops = {
- .self_test = hns3_self_test,
- .get_drvinfo = hns3_get_drvinfo,
- .get_link = hns3_get_link,
- .get_ringparam = hns3_get_ringparam,
- .set_ringparam = hns3_set_ringparam,
- .get_pauseparam = hns3_get_pauseparam,
- .get_strings = hns3_get_strings,
- .get_ethtool_stats = hns3_get_stats,
- .get_sset_count = hns3_get_sset_count,
- .get_rxnfc = hns3_get_rxnfc,
- .set_rxnfc = hns3_set_rxnfc,
- .get_rxfh_key_size = hns3_get_rss_key_size,
- .get_rxfh_indir_size = hns3_get_rss_indir_size,
- .get_rxfh = hns3_get_rss,
- .set_rxfh = hns3_set_rss,
- .get_link_ksettings = hns3_get_link_ksettings,
- .set_link_ksettings = hns3_set_link_ksettings,
- .nway_reset = hns3_nway_reset,
-};
-
-void hns3_ethtool_set_ops(struct net_device *netdev)
-{
- netdev->ethtool_ops = &hns3_ethtool_ops;
-}
nic->ae_algo = &ae_algovf;
nic->pdev = hdev->pdev;
nic->numa_node_mask = hdev->numa_node_mask;
+ nic->flags |= HNAE3_SUPPORT_VF;
if (hdev->ae_dev->dev_type != HNAE3_DEV_KNIC) {
dev_err(&hdev->pdev->dev, "unsupported device type %d\n",
projects / mirror_ubuntu-bionic-kernel.git / commitdiff