3650 lines
91 KiB
C
3650 lines
91 KiB
C
/*
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* Copyright (c) 2016~2017 Hisilicon Limited.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/dma-mapping.h>
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#include <linux/etherdevice.h>
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#include <linux/interrupt.h>
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#include <linux/if_vlan.h>
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#include <linux/ip.h>
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#include <linux/ipv6.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/skbuff.h>
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#include <linux/sctp.h>
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#include <linux/vermagic.h>
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#include <net/gre.h>
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#include <net/pkt_cls.h>
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#include <net/vxlan.h>
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#include "hnae3.h"
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#include "hns3_enet.h"
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static const char hns3_driver_name[] = "hns3";
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const char hns3_driver_version[] = VERMAGIC_STRING;
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static const char hns3_driver_string[] =
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"Hisilicon Ethernet Network Driver for Hip08 Family";
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static const char hns3_copyright[] = "Copyright (c) 2017 Huawei Corporation.";
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static struct hnae3_client client;
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/* hns3_pci_tbl - PCI Device ID Table
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*
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* Last entry must be all 0s
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*
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* { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
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* Class, Class Mask, private data (not used) }
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*/
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static const struct pci_device_id hns3_pci_tbl[] = {
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{PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_GE), 0},
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{PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE), 0},
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{PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE_RDMA),
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HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
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{PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE_RDMA_MACSEC),
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HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
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{PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_50GE_RDMA),
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HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
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{PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_50GE_RDMA_MACSEC),
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HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
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{PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_RDMA_MACSEC),
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HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
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{PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_VF), 0},
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{PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_RDMA_DCB_PFC_VF), 0},
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/* required last entry */
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{0, }
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};
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MODULE_DEVICE_TABLE(pci, hns3_pci_tbl);
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static irqreturn_t hns3_irq_handle(int irq, void *dev)
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{
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struct hns3_enet_tqp_vector *tqp_vector = dev;
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napi_schedule(&tqp_vector->napi);
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return IRQ_HANDLED;
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}
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static void hns3_nic_uninit_irq(struct hns3_nic_priv *priv)
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{
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struct hns3_enet_tqp_vector *tqp_vectors;
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unsigned int i;
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for (i = 0; i < priv->vector_num; i++) {
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tqp_vectors = &priv->tqp_vector[i];
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if (tqp_vectors->irq_init_flag != HNS3_VECTOR_INITED)
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continue;
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/* release the irq resource */
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free_irq(tqp_vectors->vector_irq, tqp_vectors);
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tqp_vectors->irq_init_flag = HNS3_VECTOR_NOT_INITED;
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}
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}
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static int hns3_nic_init_irq(struct hns3_nic_priv *priv)
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{
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struct hns3_enet_tqp_vector *tqp_vectors;
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int txrx_int_idx = 0;
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int rx_int_idx = 0;
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int tx_int_idx = 0;
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unsigned int i;
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int ret;
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for (i = 0; i < priv->vector_num; i++) {
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tqp_vectors = &priv->tqp_vector[i];
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if (tqp_vectors->irq_init_flag == HNS3_VECTOR_INITED)
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continue;
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if (tqp_vectors->tx_group.ring && tqp_vectors->rx_group.ring) {
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snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1,
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"%s-%s-%d", priv->netdev->name, "TxRx",
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txrx_int_idx++);
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txrx_int_idx++;
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} else if (tqp_vectors->rx_group.ring) {
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snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1,
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"%s-%s-%d", priv->netdev->name, "Rx",
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rx_int_idx++);
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} else if (tqp_vectors->tx_group.ring) {
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snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1,
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"%s-%s-%d", priv->netdev->name, "Tx",
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tx_int_idx++);
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} else {
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/* Skip this unused q_vector */
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continue;
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}
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tqp_vectors->name[HNAE3_INT_NAME_LEN - 1] = '\0';
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ret = request_irq(tqp_vectors->vector_irq, hns3_irq_handle, 0,
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tqp_vectors->name,
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tqp_vectors);
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if (ret) {
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netdev_err(priv->netdev, "request irq(%d) fail\n",
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tqp_vectors->vector_irq);
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return ret;
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}
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tqp_vectors->irq_init_flag = HNS3_VECTOR_INITED;
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}
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return 0;
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}
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static void hns3_mask_vector_irq(struct hns3_enet_tqp_vector *tqp_vector,
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u32 mask_en)
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{
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writel(mask_en, tqp_vector->mask_addr);
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}
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static void hns3_vector_enable(struct hns3_enet_tqp_vector *tqp_vector)
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{
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napi_enable(&tqp_vector->napi);
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/* enable vector */
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hns3_mask_vector_irq(tqp_vector, 1);
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}
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static void hns3_vector_disable(struct hns3_enet_tqp_vector *tqp_vector)
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{
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/* disable vector */
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hns3_mask_vector_irq(tqp_vector, 0);
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disable_irq(tqp_vector->vector_irq);
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napi_disable(&tqp_vector->napi);
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}
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void hns3_set_vector_coalesce_rl(struct hns3_enet_tqp_vector *tqp_vector,
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u32 rl_value)
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{
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u32 rl_reg = hns3_rl_usec_to_reg(rl_value);
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/* this defines the configuration for RL (Interrupt Rate Limiter).
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* Rl defines rate of interrupts i.e. number of interrupts-per-second
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* GL and RL(Rate Limiter) are 2 ways to acheive interrupt coalescing
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*/
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if (rl_reg > 0 && !tqp_vector->tx_group.coal.gl_adapt_enable &&
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!tqp_vector->rx_group.coal.gl_adapt_enable)
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/* According to the hardware, the range of rl_reg is
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* 0-59 and the unit is 4.
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*/
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rl_reg |= HNS3_INT_RL_ENABLE_MASK;
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writel(rl_reg, tqp_vector->mask_addr + HNS3_VECTOR_RL_OFFSET);
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}
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void hns3_set_vector_coalesce_rx_gl(struct hns3_enet_tqp_vector *tqp_vector,
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u32 gl_value)
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{
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u32 rx_gl_reg = hns3_gl_usec_to_reg(gl_value);
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writel(rx_gl_reg, tqp_vector->mask_addr + HNS3_VECTOR_GL0_OFFSET);
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}
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void hns3_set_vector_coalesce_tx_gl(struct hns3_enet_tqp_vector *tqp_vector,
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u32 gl_value)
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{
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u32 tx_gl_reg = hns3_gl_usec_to_reg(gl_value);
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writel(tx_gl_reg, tqp_vector->mask_addr + HNS3_VECTOR_GL1_OFFSET);
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}
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static void hns3_vector_gl_rl_init(struct hns3_enet_tqp_vector *tqp_vector,
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struct hns3_nic_priv *priv)
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{
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struct hnae3_handle *h = priv->ae_handle;
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/* initialize the configuration for interrupt coalescing.
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* 1. GL (Interrupt Gap Limiter)
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* 2. RL (Interrupt Rate Limiter)
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*/
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/* Default: enable interrupt coalescing self-adaptive and GL */
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tqp_vector->tx_group.coal.gl_adapt_enable = 1;
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tqp_vector->rx_group.coal.gl_adapt_enable = 1;
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tqp_vector->tx_group.coal.int_gl = HNS3_INT_GL_50K;
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tqp_vector->rx_group.coal.int_gl = HNS3_INT_GL_50K;
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/* Default: disable RL */
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h->kinfo.int_rl_setting = 0;
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tqp_vector->int_adapt_down = HNS3_INT_ADAPT_DOWN_START;
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tqp_vector->rx_group.coal.flow_level = HNS3_FLOW_LOW;
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tqp_vector->tx_group.coal.flow_level = HNS3_FLOW_LOW;
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}
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static void hns3_vector_gl_rl_init_hw(struct hns3_enet_tqp_vector *tqp_vector,
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struct hns3_nic_priv *priv)
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{
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struct hnae3_handle *h = priv->ae_handle;
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hns3_set_vector_coalesce_tx_gl(tqp_vector,
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tqp_vector->tx_group.coal.int_gl);
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hns3_set_vector_coalesce_rx_gl(tqp_vector,
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tqp_vector->rx_group.coal.int_gl);
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hns3_set_vector_coalesce_rl(tqp_vector, h->kinfo.int_rl_setting);
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}
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static int hns3_nic_set_real_num_queue(struct net_device *netdev)
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{
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struct hnae3_handle *h = hns3_get_handle(netdev);
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struct hnae3_knic_private_info *kinfo = &h->kinfo;
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unsigned int queue_size = kinfo->rss_size * kinfo->num_tc;
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int ret;
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ret = netif_set_real_num_tx_queues(netdev, queue_size);
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if (ret) {
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netdev_err(netdev,
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"netif_set_real_num_tx_queues fail, ret=%d!\n",
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ret);
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return ret;
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}
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ret = netif_set_real_num_rx_queues(netdev, queue_size);
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if (ret) {
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netdev_err(netdev,
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"netif_set_real_num_rx_queues fail, ret=%d!\n", ret);
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return ret;
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}
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return 0;
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}
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static u16 hns3_get_max_available_channels(struct hnae3_handle *h)
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{
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u16 free_tqps, max_rss_size, max_tqps;
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h->ae_algo->ops->get_tqps_and_rss_info(h, &free_tqps, &max_rss_size);
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max_tqps = h->kinfo.num_tc * max_rss_size;
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return min_t(u16, max_tqps, (free_tqps + h->kinfo.num_tqps));
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}
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static int hns3_nic_net_up(struct net_device *netdev)
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{
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struct hns3_nic_priv *priv = netdev_priv(netdev);
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struct hnae3_handle *h = priv->ae_handle;
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int i, j;
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int ret;
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/* get irq resource for all vectors */
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ret = hns3_nic_init_irq(priv);
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if (ret) {
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netdev_err(netdev, "hns init irq failed! ret=%d\n", ret);
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return ret;
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}
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/* enable the vectors */
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for (i = 0; i < priv->vector_num; i++)
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hns3_vector_enable(&priv->tqp_vector[i]);
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/* start the ae_dev */
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ret = h->ae_algo->ops->start ? h->ae_algo->ops->start(h) : 0;
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if (ret)
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goto out_start_err;
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clear_bit(HNS3_NIC_STATE_DOWN, &priv->state);
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return 0;
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out_start_err:
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for (j = i - 1; j >= 0; j--)
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hns3_vector_disable(&priv->tqp_vector[j]);
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hns3_nic_uninit_irq(priv);
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return ret;
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}
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static int hns3_nic_net_open(struct net_device *netdev)
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{
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struct hns3_nic_priv *priv = netdev_priv(netdev);
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int ret;
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netif_carrier_off(netdev);
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ret = hns3_nic_set_real_num_queue(netdev);
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if (ret)
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return ret;
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ret = hns3_nic_net_up(netdev);
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if (ret) {
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netdev_err(netdev,
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"hns net up fail, ret=%d!\n", ret);
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return ret;
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}
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priv->last_reset_time = jiffies;
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return 0;
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}
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static void hns3_nic_net_down(struct net_device *netdev)
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{
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struct hns3_nic_priv *priv = netdev_priv(netdev);
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const struct hnae3_ae_ops *ops;
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int i;
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if (test_and_set_bit(HNS3_NIC_STATE_DOWN, &priv->state))
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return;
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/* stop ae_dev */
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ops = priv->ae_handle->ae_algo->ops;
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if (ops->stop)
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ops->stop(priv->ae_handle);
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/* disable vectors */
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for (i = 0; i < priv->vector_num; i++)
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hns3_vector_disable(&priv->tqp_vector[i]);
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/* free irq resources */
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hns3_nic_uninit_irq(priv);
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}
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static int hns3_nic_net_stop(struct net_device *netdev)
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{
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netif_tx_stop_all_queues(netdev);
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netif_carrier_off(netdev);
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hns3_nic_net_down(netdev);
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return 0;
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}
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static int hns3_nic_uc_sync(struct net_device *netdev,
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const unsigned char *addr)
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{
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struct hnae3_handle *h = hns3_get_handle(netdev);
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if (h->ae_algo->ops->add_uc_addr)
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return h->ae_algo->ops->add_uc_addr(h, addr);
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return 0;
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}
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static int hns3_nic_uc_unsync(struct net_device *netdev,
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const unsigned char *addr)
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{
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struct hnae3_handle *h = hns3_get_handle(netdev);
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if (h->ae_algo->ops->rm_uc_addr)
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return h->ae_algo->ops->rm_uc_addr(h, addr);
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return 0;
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}
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static int hns3_nic_mc_sync(struct net_device *netdev,
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const unsigned char *addr)
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{
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struct hnae3_handle *h = hns3_get_handle(netdev);
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if (h->ae_algo->ops->add_mc_addr)
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return h->ae_algo->ops->add_mc_addr(h, addr);
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return 0;
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}
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static int hns3_nic_mc_unsync(struct net_device *netdev,
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const unsigned char *addr)
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{
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struct hnae3_handle *h = hns3_get_handle(netdev);
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if (h->ae_algo->ops->rm_mc_addr)
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return h->ae_algo->ops->rm_mc_addr(h, addr);
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return 0;
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}
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static void hns3_nic_set_rx_mode(struct net_device *netdev)
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{
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struct hnae3_handle *h = hns3_get_handle(netdev);
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if (h->ae_algo->ops->set_promisc_mode) {
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if (netdev->flags & IFF_PROMISC)
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h->ae_algo->ops->set_promisc_mode(h, 1);
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else
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h->ae_algo->ops->set_promisc_mode(h, 0);
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}
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if (__dev_uc_sync(netdev, hns3_nic_uc_sync, hns3_nic_uc_unsync))
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netdev_err(netdev, "sync uc address fail\n");
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if (netdev->flags & IFF_MULTICAST)
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if (__dev_mc_sync(netdev, hns3_nic_mc_sync, hns3_nic_mc_unsync))
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netdev_err(netdev, "sync mc address fail\n");
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}
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static int hns3_set_tso(struct sk_buff *skb, u32 *paylen,
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u16 *mss, u32 *type_cs_vlan_tso)
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{
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u32 l4_offset, hdr_len;
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union l3_hdr_info l3;
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union l4_hdr_info l4;
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u32 l4_paylen;
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int ret;
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if (!skb_is_gso(skb))
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return 0;
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ret = skb_cow_head(skb, 0);
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if (ret)
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return ret;
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l3.hdr = skb_network_header(skb);
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l4.hdr = skb_transport_header(skb);
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/* Software should clear the IPv4's checksum field when tso is
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* needed.
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*/
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if (l3.v4->version == 4)
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l3.v4->check = 0;
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/* tunnel packet.*/
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if (skb_shinfo(skb)->gso_type & (SKB_GSO_GRE |
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SKB_GSO_GRE_CSUM |
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SKB_GSO_UDP_TUNNEL |
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SKB_GSO_UDP_TUNNEL_CSUM)) {
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if ((!(skb_shinfo(skb)->gso_type &
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SKB_GSO_PARTIAL)) &&
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(skb_shinfo(skb)->gso_type &
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SKB_GSO_UDP_TUNNEL_CSUM)) {
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/* Software should clear the udp's checksum
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* field when tso is needed.
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*/
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l4.udp->check = 0;
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}
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/* reset l3&l4 pointers from outer to inner headers */
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l3.hdr = skb_inner_network_header(skb);
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l4.hdr = skb_inner_transport_header(skb);
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/* Software should clear the IPv4's checksum field when
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* tso is needed.
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*/
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if (l3.v4->version == 4)
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l3.v4->check = 0;
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}
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|
/* 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_vtags(struct sk_buff *skb,
|
|
struct hns3_enet_ring *tx_ring,
|
|
u32 *inner_vlan_flag,
|
|
u32 *out_vlan_flag,
|
|
u16 *inner_vtag,
|
|
u16 *out_vtag)
|
|
{
|
|
#define HNS3_TX_VLAN_PRIO_SHIFT 13
|
|
|
|
if (skb->protocol == htons(ETH_P_8021Q) &&
|
|
!(tx_ring->tqp->handle->kinfo.netdev->features &
|
|
NETIF_F_HW_VLAN_CTAG_TX)) {
|
|
/* When HW VLAN acceleration is turned off, and the stack
|
|
* sets the protocol to 802.1q, the driver just need to
|
|
* set the protocol to the encapsulated ethertype.
|
|
*/
|
|
skb->protocol = vlan_get_protocol(skb);
|
|
return 0;
|
|
}
|
|
|
|
if (skb_vlan_tag_present(skb)) {
|
|
u16 vlan_tag;
|
|
|
|
vlan_tag = skb_vlan_tag_get(skb);
|
|
vlan_tag |= (skb->priority & 0x7) << HNS3_TX_VLAN_PRIO_SHIFT;
|
|
|
|
/* Based on hw strategy, use out_vtag in two layer tag case,
|
|
* and use inner_vtag in one tag case.
|
|
*/
|
|
if (skb->protocol == htons(ETH_P_8021Q)) {
|
|
hnae_set_bit(*out_vlan_flag, HNS3_TXD_OVLAN_B, 1);
|
|
*out_vtag = vlan_tag;
|
|
} else {
|
|
hnae_set_bit(*inner_vlan_flag, HNS3_TXD_VLAN_B, 1);
|
|
*inner_vtag = vlan_tag;
|
|
}
|
|
} else if (skb->protocol == htons(ETH_P_8021Q)) {
|
|
struct vlan_ethhdr *vhdr;
|
|
int rc;
|
|
|
|
rc = skb_cow_head(skb, 0);
|
|
if (rc < 0)
|
|
return rc;
|
|
vhdr = (struct vlan_ethhdr *)skb->data;
|
|
vhdr->h_vlan_TCI |= cpu_to_be16((skb->priority & 0x7)
|
|
<< HNS3_TX_VLAN_PRIO_SHIFT);
|
|
}
|
|
|
|
skb->protocol = vlan_get_protocol(skb);
|
|
return 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;
|
|
u16 inner_vtag = 0;
|
|
u16 out_vtag = 0;
|
|
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;
|
|
|
|
ret = hns3_fill_desc_vtags(skb, ring, &type_cs_vlan_tso,
|
|
&ol_type_vlan_len_msec,
|
|
&inner_vtag, &out_vtag);
|
|
if (unlikely(ret))
|
|
return ret;
|
|
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL) {
|
|
skb_reset_mac_len(skb);
|
|
protocol = skb->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);
|
|
desc->tx.vlan_tag = cpu_to_le16(inner_vtag);
|
|
desc->tx.outer_vlan_tag = cpu_to_le16(out_vtag);
|
|
}
|
|
|
|
/* 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, false);
|
|
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)
|
|
{
|
|
netdev_features_t changed = netdev->features ^ features;
|
|
struct hns3_nic_priv *priv = netdev_priv(netdev);
|
|
struct hnae3_handle *h = priv->ae_handle;
|
|
int ret;
|
|
|
|
if (changed & (NETIF_F_TSO | NETIF_F_TSO6)) {
|
|
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;
|
|
}
|
|
}
|
|
|
|
if ((changed & NETIF_F_HW_VLAN_CTAG_FILTER) &&
|
|
h->ae_algo->ops->enable_vlan_filter) {
|
|
if (features & NETIF_F_HW_VLAN_CTAG_FILTER)
|
|
h->ae_algo->ops->enable_vlan_filter(h, true);
|
|
else
|
|
h->ae_algo->ops->enable_vlan_filter(h, false);
|
|
}
|
|
|
|
if ((changed & NETIF_F_HW_VLAN_CTAG_RX) &&
|
|
h->ae_algo->ops->enable_hw_strip_rxvtag) {
|
|
if (features & NETIF_F_HW_VLAN_CTAG_RX)
|
|
ret = h->ae_algo->ops->enable_hw_strip_rxvtag(h, true);
|
|
else
|
|
ret = h->ae_algo->ops->enable_hw_strip_rxvtag(h, false);
|
|
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
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 hnae3_handle *handle = priv->ae_handle;
|
|
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;
|
|
u64 tx_drop = 0;
|
|
u64 rx_drop = 0;
|
|
|
|
if (test_bit(HNS3_NIC_STATE_DOWN, &priv->state))
|
|
return;
|
|
|
|
handle->ae_algo->ops->update_stats(handle, &netdev->stats);
|
|
|
|
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;
|
|
tx_drop += ring->stats.tx_busy;
|
|
tx_drop += ring->stats.sw_err_cnt;
|
|
} 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;
|
|
rx_drop += ring->stats.non_vld_descs;
|
|
rx_drop += ring->stats.err_pkt_len;
|
|
rx_drop += ring->stats.l2_err;
|
|
} 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 = rx_drop + netdev->stats.rx_dropped;
|
|
stats->tx_dropped = tx_drop + 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);
|
|
struct hns3_nic_priv *priv = netdev_priv(netdev);
|
|
int ret = -EIO;
|
|
|
|
if (h->ae_algo->ops->set_vlan_filter)
|
|
ret = h->ae_algo->ops->set_vlan_filter(h, proto, vid, false);
|
|
|
|
if (!ret)
|
|
set_bit(vid, priv->active_vlans);
|
|
|
|
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);
|
|
struct hns3_nic_priv *priv = netdev_priv(netdev);
|
|
int ret = -EIO;
|
|
|
|
if (h->ae_algo->ops->set_vlan_filter)
|
|
ret = h->ae_algo->ops->set_vlan_filter(h, proto, vid, true);
|
|
|
|
if (!ret)
|
|
clear_bit(vid, priv->active_vlans);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void hns3_restore_vlan(struct net_device *netdev)
|
|
{
|
|
struct hns3_nic_priv *priv = netdev_priv(netdev);
|
|
u16 vid;
|
|
int ret;
|
|
|
|
for_each_set_bit(vid, priv->active_vlans, VLAN_N_VID) {
|
|
ret = hns3_vlan_rx_add_vid(netdev, htons(ETH_P_8021Q), vid);
|
|
if (ret)
|
|
netdev_warn(netdev, "Restore vlan: %d filter, ret:%d\n",
|
|
vid, 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;
|
|
}
|
|
|
|
netdev->mtu = new_mtu;
|
|
|
|
/* 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)
|
|
{
|
|
struct hnae3_handle *h = hns3_get_handle(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_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
|
|
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_TX |
|
|
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;
|
|
|
|
if (!(h->flags & HNAE3_SUPPORT_VF))
|
|
netdev->hw_features |=
|
|
NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
|
|
}
|
|
|
|
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);
|
|
|
|
truesize = hnae_buf_size(ring);
|
|
|
|
if (!twobufs)
|
|
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);
|
|
|
|
/* 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);
|
|
|
|
/* Based on hw strategy, the tag offloaded will be stored at
|
|
* ot_vlan_tag in two layer tag case, and stored at vlan_tag
|
|
* in one layer tag case.
|
|
*/
|
|
if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX) {
|
|
u16 vlan_tag;
|
|
|
|
vlan_tag = le16_to_cpu(desc->rx.ot_vlan_tag);
|
|
if (!(vlan_tag & VLAN_VID_MASK))
|
|
vlan_tag = le16_to_cpu(desc->rx.vlan_tag);
|
|
if (vlan_tag & VLAN_VID_MASK)
|
|
__vlan_hwaccel_put_tag(skb,
|
|
htons(ETH_P_8021Q),
|
|
vlan_tag);
|
|
}
|
|
|
|
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)
|
|
{
|
|
struct hns3_enet_tqp_vector *tqp_vector =
|
|
ring_group->ring->tqp_vector;
|
|
enum hns3_flow_level_range new_flow_level;
|
|
int packets_per_msecs;
|
|
int bytes_per_msecs;
|
|
u32 time_passed_ms;
|
|
u16 new_int_gl;
|
|
|
|
if (!ring_group->coal.int_gl || !tqp_vector->last_jiffies)
|
|
return false;
|
|
|
|
if (ring_group->total_packets == 0) {
|
|
ring_group->coal.int_gl = HNS3_INT_GL_50K;
|
|
ring_group->coal.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->coal.flow_level;
|
|
new_int_gl = ring_group->coal.int_gl;
|
|
time_passed_ms =
|
|
jiffies_to_msecs(jiffies - tqp_vector->last_jiffies);
|
|
|
|
if (!time_passed_ms)
|
|
return false;
|
|
|
|
do_div(ring_group->total_packets, time_passed_ms);
|
|
packets_per_msecs = ring_group->total_packets;
|
|
|
|
do_div(ring_group->total_bytes, time_passed_ms);
|
|
bytes_per_msecs = ring_group->total_bytes;
|
|
|
|
#define HNS3_RX_LOW_BYTE_RATE 10000
|
|
#define HNS3_RX_MID_BYTE_RATE 20000
|
|
|
|
switch (new_flow_level) {
|
|
case HNS3_FLOW_LOW:
|
|
if (bytes_per_msecs > HNS3_RX_LOW_BYTE_RATE)
|
|
new_flow_level = HNS3_FLOW_MID;
|
|
break;
|
|
case HNS3_FLOW_MID:
|
|
if (bytes_per_msecs > HNS3_RX_MID_BYTE_RATE)
|
|
new_flow_level = HNS3_FLOW_HIGH;
|
|
else if (bytes_per_msecs <= HNS3_RX_LOW_BYTE_RATE)
|
|
new_flow_level = HNS3_FLOW_LOW;
|
|
break;
|
|
case HNS3_FLOW_HIGH:
|
|
case HNS3_FLOW_ULTRA:
|
|
default:
|
|
if (bytes_per_msecs <= HNS3_RX_MID_BYTE_RATE)
|
|
new_flow_level = HNS3_FLOW_MID;
|
|
break;
|
|
}
|
|
|
|
#define HNS3_RX_ULTRA_PACKET_RATE 40
|
|
|
|
if (packets_per_msecs > 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->coal.flow_level = new_flow_level;
|
|
if (new_int_gl != ring_group->coal.int_gl) {
|
|
ring_group->coal.int_gl = new_int_gl;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static void hns3_update_new_int_gl(struct hns3_enet_tqp_vector *tqp_vector)
|
|
{
|
|
struct hns3_enet_ring_group *rx_group = &tqp_vector->rx_group;
|
|
struct hns3_enet_ring_group *tx_group = &tqp_vector->tx_group;
|
|
bool rx_update, tx_update;
|
|
|
|
if (tqp_vector->int_adapt_down > 0) {
|
|
tqp_vector->int_adapt_down--;
|
|
return;
|
|
}
|
|
|
|
if (rx_group->coal.gl_adapt_enable) {
|
|
rx_update = hns3_get_new_int_gl(rx_group);
|
|
if (rx_update)
|
|
hns3_set_vector_coalesce_rx_gl(tqp_vector,
|
|
rx_group->coal.int_gl);
|
|
}
|
|
|
|
if (tx_group->coal.gl_adapt_enable) {
|
|
tx_update = hns3_get_new_int_gl(&tqp_vector->tx_group);
|
|
if (tx_update)
|
|
hns3_set_vector_coalesce_tx_gl(tqp_vector,
|
|
tx_group->coal.int_gl);
|
|
}
|
|
|
|
tqp_vector->last_jiffies = jiffies;
|
|
tqp_vector->int_adapt_down = HNS3_INT_ADAPT_DOWN_START;
|
|
}
|
|
|
|
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);
|
|
hnae_set_field(cur_chain->int_gl_idx, HNAE3_RING_GL_IDX_M,
|
|
HNAE3_RING_GL_IDX_S, HNAE3_RING_GL_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);
|
|
hnae_set_field(chain->int_gl_idx,
|
|
HNAE3_RING_GL_IDX_M,
|
|
HNAE3_RING_GL_IDX_S,
|
|
HNAE3_RING_GL_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);
|
|
hnae_set_field(cur_chain->int_gl_idx, HNAE3_RING_GL_IDX_M,
|
|
HNAE3_RING_GL_IDX_S, HNAE3_RING_GL_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);
|
|
hnae_set_field(chain->int_gl_idx, HNAE3_RING_GL_IDX_M,
|
|
HNAE3_RING_GL_IDX_S, HNAE3_RING_GL_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;
|
|
int ret = 0;
|
|
u16 i;
|
|
|
|
for (i = 0; i < priv->vector_num; i++) {
|
|
tqp_vector = &priv->tqp_vector[i];
|
|
hns3_vector_gl_rl_init_hw(tqp_vector, priv);
|
|
tqp_vector->num_tqps = 0;
|
|
}
|
|
|
|
for (i = 0; i < h->kinfo.num_tqps; i++) {
|
|
u16 vector_i = i % priv->vector_num;
|
|
u16 tqp_num = h->kinfo.num_tqps;
|
|
|
|
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);
|
|
|
|
priv->ring_data[i].ring->tqp_vector = tqp_vector;
|
|
priv->ring_data[i + tqp_num].ring->tqp_vector = tqp_vector;
|
|
tqp_vector->num_tqps++;
|
|
}
|
|
|
|
for (i = 0; i < priv->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;
|
|
tqp_vector->handle = h;
|
|
|
|
ret = hns3_get_vector_ring_chain(tqp_vector,
|
|
&vector_ring_chain);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = h->ae_algo->ops->map_ring_to_vector(h,
|
|
tqp_vector->vector_irq, &vector_ring_chain);
|
|
|
|
hns3_free_vector_ring_chain(tqp_vector, &vector_ring_chain);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
netif_napi_add(priv->netdev, &tqp_vector->napi,
|
|
hns3_nic_common_poll, NAPI_POLL_WEIGHT);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hns3_nic_alloc_vector_data(struct hns3_nic_priv *priv)
|
|
{
|
|
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) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
for (i = 0; i < priv->vector_num; i++) {
|
|
tqp_vector = &priv->tqp_vector[i];
|
|
tqp_vector->idx = i;
|
|
tqp_vector->mask_addr = vector[i].io_addr;
|
|
tqp_vector->vector_irq = vector[i].vector;
|
|
hns3_vector_gl_rl_init(tqp_vector, priv);
|
|
}
|
|
|
|
out:
|
|
devm_kfree(&pdev->dev, vector);
|
|
return ret;
|
|
}
|
|
|
|
static void hns3_clear_ring_group(struct hns3_enet_ring_group *group)
|
|
{
|
|
group->ring = NULL;
|
|
group->count = 0;
|
|
}
|
|
|
|
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;
|
|
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;
|
|
|
|
ret = h->ae_algo->ops->put_vector(h, tqp_vector->vector_irq);
|
|
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;
|
|
hns3_clear_ring_group(&tqp_vector->rx_group);
|
|
hns3_clear_ring_group(&tqp_vector->tx_group);
|
|
netif_napi_del(&priv->tqp_vector[i].napi);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hns3_nic_dealloc_vector_data(struct hns3_nic_priv *priv)
|
|
{
|
|
struct hnae3_handle *h = priv->ae_handle;
|
|
struct pci_dev *pdev = h->pdev;
|
|
int i, ret;
|
|
|
|
for (i = 0; i < priv->vector_num; i++) {
|
|
struct hns3_enet_tqp_vector *tqp_vector;
|
|
|
|
tqp_vector = &priv->tqp_vector[i];
|
|
ret = h->ae_algo->ops->put_vector(h, tqp_vector->vector_irq);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
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 void hns3_put_ring_config(struct hns3_nic_priv *priv)
|
|
{
|
|
struct hnae3_handle *h = priv->ae_handle;
|
|
int i;
|
|
|
|
for (i = 0; i < h->kinfo.num_tqps; i++) {
|
|
devm_kfree(priv->dev, priv->ring_data[i].ring);
|
|
devm_kfree(priv->dev,
|
|
priv->ring_data[i + h->kinfo.num_tqps].ring);
|
|
}
|
|
devm_kfree(priv->dev, priv->ring_data);
|
|
}
|
|
|
|
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, true);
|
|
|
|
}
|
|
|
|
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),
|
|
hns3_get_max_available_channels(handle));
|
|
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_alloc_vector_data(priv);
|
|
if (ret) {
|
|
ret = -ENOMEM;
|
|
goto out_alloc_vector_data;
|
|
}
|
|
|
|
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);
|
|
out_init_vector_data:
|
|
hns3_nic_dealloc_vector_data(priv);
|
|
out_alloc_vector_data:
|
|
priv->ring_data = NULL;
|
|
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_nic_dealloc_vector_data(priv);
|
|
if (ret)
|
|
netdev_err(netdev, "dealloc vector error\n");
|
|
|
|
ret = hns3_uninit_all_ring(priv);
|
|
if (ret)
|
|
netdev_err(netdev, "uninit ring error\n");
|
|
|
|
hns3_put_ring_config(priv);
|
|
|
|
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);
|
|
|
|
/* Hardware table is only clear when pf resets */
|
|
if (!(handle->flags & HNAE3_SUPPORT_VF))
|
|
hns3_restore_vlan(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");
|
|
|
|
hns3_put_ring_config(priv);
|
|
|
|
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 void hns3_restore_coal(struct hns3_nic_priv *priv,
|
|
struct hns3_enet_coalesce *tx,
|
|
struct hns3_enet_coalesce *rx)
|
|
{
|
|
u16 vector_num = priv->vector_num;
|
|
int i;
|
|
|
|
for (i = 0; i < vector_num; i++) {
|
|
memcpy(&priv->tqp_vector[i].tx_group.coal, tx,
|
|
sizeof(struct hns3_enet_coalesce));
|
|
memcpy(&priv->tqp_vector[i].rx_group.coal, rx,
|
|
sizeof(struct hns3_enet_coalesce));
|
|
}
|
|
}
|
|
|
|
static int hns3_modify_tqp_num(struct net_device *netdev, u16 new_tqp_num,
|
|
struct hns3_enet_coalesce *tx,
|
|
struct hns3_enet_coalesce *rx)
|
|
{
|
|
struct hns3_nic_priv *priv = netdev_priv(netdev);
|
|
struct hnae3_handle *h = hns3_get_handle(netdev);
|
|
int ret;
|
|
|
|
ret = h->ae_algo->ops->set_channels(h, new_tqp_num);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = hns3_get_ring_config(priv);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = hns3_nic_alloc_vector_data(priv);
|
|
if (ret)
|
|
goto err_alloc_vector;
|
|
|
|
hns3_restore_coal(priv, tx, rx);
|
|
|
|
ret = hns3_nic_init_vector_data(priv);
|
|
if (ret)
|
|
goto err_uninit_vector;
|
|
|
|
ret = hns3_init_all_ring(priv);
|
|
if (ret)
|
|
goto err_put_ring;
|
|
|
|
return 0;
|
|
|
|
err_put_ring:
|
|
hns3_put_ring_config(priv);
|
|
err_uninit_vector:
|
|
hns3_nic_uninit_vector_data(priv);
|
|
err_alloc_vector:
|
|
hns3_nic_dealloc_vector_data(priv);
|
|
return ret;
|
|
}
|
|
|
|
static int hns3_adjust_tqps_num(u8 num_tc, u32 new_tqp_num)
|
|
{
|
|
return (new_tqp_num / num_tc) * num_tc;
|
|
}
|
|
|
|
int hns3_set_channels(struct net_device *netdev,
|
|
struct ethtool_channels *ch)
|
|
{
|
|
struct hns3_nic_priv *priv = netdev_priv(netdev);
|
|
struct hnae3_handle *h = hns3_get_handle(netdev);
|
|
struct hnae3_knic_private_info *kinfo = &h->kinfo;
|
|
struct hns3_enet_coalesce tx_coal, rx_coal;
|
|
bool if_running = netif_running(netdev);
|
|
u32 new_tqp_num = ch->combined_count;
|
|
u16 org_tqp_num;
|
|
int ret;
|
|
|
|
if (ch->rx_count || ch->tx_count)
|
|
return -EINVAL;
|
|
|
|
if (new_tqp_num > hns3_get_max_available_channels(h) ||
|
|
new_tqp_num < kinfo->num_tc) {
|
|
dev_err(&netdev->dev,
|
|
"Change tqps fail, the tqp range is from %d to %d",
|
|
kinfo->num_tc,
|
|
hns3_get_max_available_channels(h));
|
|
return -EINVAL;
|
|
}
|
|
|
|
new_tqp_num = hns3_adjust_tqps_num(kinfo->num_tc, new_tqp_num);
|
|
if (kinfo->num_tqps == new_tqp_num)
|
|
return 0;
|
|
|
|
if (if_running)
|
|
hns3_nic_net_stop(netdev);
|
|
|
|
hns3_clear_all_ring(h);
|
|
|
|
ret = hns3_nic_uninit_vector_data(priv);
|
|
if (ret) {
|
|
dev_err(&netdev->dev,
|
|
"Unbind vector with tqp fail, nothing is changed");
|
|
goto open_netdev;
|
|
}
|
|
|
|
/* Changing the tqp num may also change the vector num,
|
|
* ethtool only support setting and querying one coal
|
|
* configuation for now, so save the vector 0' coal
|
|
* configuation here in order to restore it.
|
|
*/
|
|
memcpy(&tx_coal, &priv->tqp_vector[0].tx_group.coal,
|
|
sizeof(struct hns3_enet_coalesce));
|
|
memcpy(&rx_coal, &priv->tqp_vector[0].rx_group.coal,
|
|
sizeof(struct hns3_enet_coalesce));
|
|
|
|
hns3_nic_dealloc_vector_data(priv);
|
|
|
|
hns3_uninit_all_ring(priv);
|
|
hns3_put_ring_config(priv);
|
|
|
|
org_tqp_num = h->kinfo.num_tqps;
|
|
ret = hns3_modify_tqp_num(netdev, new_tqp_num, &tx_coal, &rx_coal);
|
|
if (ret) {
|
|
ret = hns3_modify_tqp_num(netdev, org_tqp_num,
|
|
&tx_coal, &rx_coal);
|
|
if (ret) {
|
|
/* If revert to old tqp failed, fatal error occurred */
|
|
dev_err(&netdev->dev,
|
|
"Revert to old tqp num fail, ret=%d", ret);
|
|
return ret;
|
|
}
|
|
dev_info(&netdev->dev,
|
|
"Change tqp num fail, Revert to old tqp num");
|
|
}
|
|
|
|
open_netdev:
|
|
if (if_running)
|
|
hns3_nic_net_open(netdev);
|
|
|
|
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");
|