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aq_nic.c
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/*
* aQuantia Corporation Network Driver
* Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*/
/* File aq_nic.c: Definition of common code for NIC. */
#include <linux/moduleparam.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/timer.h>
#ifndef __VMKLNX__
#include <linux/cpu.h>
#else
#include <linux/cpumask.h>
#endif
#include <linux/ip.h>
#include <linux/tcp.h>
#include <net/ip.h>
#include <net/tcp.h>
#ifdef __VMKLNX__
#include <net/if_inet6.h>
#include <vmkapi.h>
#include <linux/ethtool.h>
#include "aq_compat_ethtool.h"
#else
#include <net/ipv6.h>
#endif
#include "aq_nic.h"
#include "aq_ring.h"
#include "aq_vec.h"
#include "aq_hw.h"
#include "aq_pci_func.h"
#include "aq_main.h"
#ifndef __VMKLNX__
#include "aq_ptp.h"
#endif
#include "aq_phy.h"
static unsigned int aq_itr = AQ_CFG_INTERRUPT_MODERATION_AUTO;
module_param_named(aq_itr, aq_itr, uint, 0644);
MODULE_PARM_DESC(aq_itr, "Interrupt throttling mode");
static unsigned int aq_itr_tx;
module_param_named(aq_itr_tx, aq_itr_tx, uint, 0644);
MODULE_PARM_DESC(aq_itr_tx, "TX interrupt throttle rate");
static unsigned int aq_itr_rx;
module_param_named(aq_itr_rx, aq_itr_rx, uint, 0644);
MODULE_PARM_DESC(aq_itr_rx, "RX interrupt throttle rate");
static unsigned int aq_rxpageorder;
module_param_named(aq_rxpageorder, aq_rxpageorder, uint, 0644);
MODULE_PARM_DESC(aq_rxpageorder, "RX page order override");
unsigned int aq_rx_refill_thres = 32;
module_param_named(aq_rx_refill_thres, aq_rx_refill_thres, uint, 0644);
MODULE_PARM_DESC(aq_rx_refill_thres, "RX refill threshold");
static void aq_nic_rss_init(struct aq_nic_s *self, unsigned int num_rss_queues)
{
struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
struct aq_rss_parameters *rss_params = &cfg->aq_rss;
int i = 0;
static u8 rss_key[40] = {
0x1e, 0xad, 0x71, 0x87, 0x65, 0xfc, 0x26, 0x7d,
0x0d, 0x45, 0x67, 0x74, 0xcd, 0x06, 0x1a, 0x18,
0xb6, 0xc1, 0xf0, 0xc7, 0xbb, 0x18, 0xbe, 0xf8,
0x19, 0x13, 0x4b, 0xa9, 0xd0, 0x3e, 0xfe, 0x70,
0x25, 0x03, 0xab, 0x50, 0x6a, 0x8b, 0x82, 0x0c
};
rss_params->hash_secret_key_size = sizeof(rss_key);
memcpy(rss_params->hash_secret_key, rss_key, sizeof(rss_key));
rss_params->indirection_table_size = AQ_CFG_RSS_INDIRECTION_TABLE_MAX;
for (i = rss_params->indirection_table_size; i--;)
rss_params->indirection_table[i] = i & (num_rss_queues - 1);
}
/* Checks hw_caps and 'corrects' aq_nic_cfg in runtime */
void aq_nic_cfg_start(struct aq_nic_s *self)
{
struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
cfg->tcs = AQ_CFG_TCS_DEF;
cfg->is_polling = AQ_CFG_IS_POLLING_DEF;
cfg->itr = aq_itr;
cfg->tx_itr = aq_itr_tx;
cfg->rx_itr = aq_itr_rx;
cfg->rxpageorder = aq_rxpageorder;
cfg->is_rss = AQ_CFG_IS_RSS_DEF;
cfg->num_rss_queues = AQ_CFG_NUM_RSS_QUEUES_DEF;
cfg->aq_rss.base_cpu_number = AQ_CFG_RSS_BASE_CPU_NUM_DEF;
cfg->flow_control = AQ_CFG_FC_MODE;
cfg->wol = AQ_CFG_WOL_MODE;
cfg->mtu = AQ_CFG_MTU_DEF;
cfg->link_speed_msk = AQ_CFG_SPEED_MSK;
cfg->is_autoneg = AQ_CFG_IS_AUTONEG_DEF;
cfg->is_lro = AQ_CFG_IS_LRO_DEF;
/*descriptors */
cfg->rxds = min(cfg->aq_hw_caps->rxds_max, AQ_CFG_RXDS_DEF);
cfg->txds = min(cfg->aq_hw_caps->txds_max, AQ_CFG_TXDS_DEF);
/*rss rings */
cfg->vecs = min(cfg->aq_hw_caps->vecs, AQ_CFG_VECS_DEF);
cfg->vecs = min(cfg->vecs, num_online_cpus());
if (self->irqvecs > AQ_HW_SERVICE_IRQS)
cfg->vecs = min(cfg->vecs, self->irqvecs - AQ_HW_SERVICE_IRQS);
/* cfg->vecs should be power of 2 for RSS */
if (cfg->vecs >= 8U)
cfg->vecs = 8U;
else if (cfg->vecs >= 4U)
cfg->vecs = 4U;
else if (cfg->vecs >= 2U)
cfg->vecs = 2U;
else
cfg->vecs = 1U;
cfg->num_rss_queues = min(cfg->vecs, AQ_CFG_NUM_RSS_QUEUES_DEF);
aq_nic_rss_init(self, cfg->num_rss_queues);
cfg->irq_type = aq_pci_func_get_irq_type(self);
if ((cfg->irq_type == AQ_HW_IRQ_LEGACY) ||
(cfg->aq_hw_caps->vecs == 1U) ||
(cfg->vecs == 1U)) {
cfg->is_rss = 0U;
cfg->vecs = 1U;
}
/* Check if we have enough vectors allocated for
* link status IRQ. If no - we'll know link state from
* slower service task.
*/
if (AQ_HW_SERVICE_IRQS > 0 && cfg->vecs+1 <= self->irqvecs)
cfg->link_irq_vec = cfg->vecs;
else
cfg->link_irq_vec = 0;
cfg->link_speed_msk &= cfg->aq_hw_caps->link_speed_msk;
cfg->features = cfg->aq_hw_caps->hw_features;
#ifdef __VMKLNX__
cfg->is_vlan_rx_strip = !!(cfg->features & NETIF_F_HW_VLAN_CTAG_RX);
cfg->is_vlan_tx_insert = !!(cfg->features & NETIF_F_HW_VLAN_CTAG_TX);
#endif
}
static int aq_nic_update_link_status(struct aq_nic_s *self)
{
int err = self->aq_fw_ops->update_link_status(self->aq_hw);
u32 fc = 0;
if (err)
return err;
if (self->link_status.mbps != self->aq_hw->aq_link_status.mbps) {
aq_nic_print(self, info, link, "%s: link change old %d new %d\n",
aq_ndev_driver_name, self->link_status.mbps,
self->aq_hw->aq_link_status.mbps);
aq_nic_update_interrupt_moderation_settings(self);
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 17, 0)) ||\
(RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(7, 2))
if (self->aq_ptp) {
aq_ptp_clock_init(self);
aq_ptp_tm_offset_set(self, self->aq_hw->aq_link_status.mbps);
}
#endif
/* Driver has to update flow control settings on RX block
* on any link event.
* We should query FW whether it negotiated FC.
*/
if (self->aq_fw_ops->get_flow_control)
self->aq_fw_ops->get_flow_control(self->aq_hw, &fc);
if (self->aq_hw_ops->hw_set_fc)
self->aq_hw_ops->hw_set_fc(self->aq_hw, fc, 0);
}
self->link_status = self->aq_hw->aq_link_status;
if (!netif_carrier_ok(self->ndev) && self->link_status.mbps) {
aq_utils_obj_set(&self->flags,
AQ_NIC_FLAG_STARTED);
aq_utils_obj_clear(&self->flags,
AQ_NIC_LINK_DOWN);
netif_carrier_on(self->ndev);
netif_tx_wake_all_queues(self->ndev);
}
if (netif_carrier_ok(self->ndev) && !self->link_status.mbps) {
netif_carrier_off(self->ndev);
#ifdef __VMKLNX__
netif_tx_stop_all_queues(self->ndev);
#else
netif_tx_disable(self->ndev);
#endif
aq_utils_obj_set(&self->flags, AQ_NIC_LINK_DOWN);
}
return 0;
}
static void aq_nic_update_link_task_cb(struct work_struct *w)
{
struct aq_nic_s *self = container_of(w, struct aq_nic_s,
link_update_task);
aq_nic_update_link_status(self);
self->aq_hw_ops->hw_irq_enable(self->aq_hw,
BIT(self->aq_nic_cfg.link_irq_vec));
}
static irqreturn_t aq_linkstate_isr(int irq, void *private)
{
struct aq_nic_s *self = private;
if (!self)
return IRQ_NONE;
schedule_work(&self->link_update_task);
return IRQ_HANDLED;
}
static void aq_nic_update_ndev_stats(struct aq_nic_s *self)
{
struct aq_stats_s *stats;
struct net_device *ndev = self->ndev;
stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
ndev->stats.rx_packets = stats->dma_pkt_rc;
ndev->stats.rx_bytes = stats->dma_oct_rc;
ndev->stats.rx_errors = stats->erpr;
ndev->stats.rx_dropped = stats->dpc;
ndev->stats.tx_packets = stats->dma_pkt_tc;
ndev->stats.tx_bytes = stats->dma_oct_tc;
ndev->stats.tx_errors = stats->erpt;
ndev->stats.multicast = stats->mprc;
}
static void aq_nic_service_task(struct work_struct *work)
{
struct aq_nic_s *self = container_of(work,
struct aq_nic_s, service_task);
int err;
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 17, 0)) ||\
(RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(7, 2))
aq_ptp_service_task(self);
#endif
if (aq_utils_obj_test(&self->flags, AQ_NIC_FLAGS_IS_NOT_READY))
return;
err = aq_nic_update_link_status(self);
if (err)
return;
mutex_lock(&self->fwreq_mutex);
if (self->aq_fw_ops->update_stats)
self->aq_fw_ops->update_stats(self->aq_hw);
mutex_unlock(&self->fwreq_mutex);
aq_nic_update_ndev_stats(self);
}
static void aq_nic_service_timer_cb(struct timer_list *t)
{
struct aq_nic_s *self = from_timer(self, t, service_timer);
int ctimer = AQ_CFG_SERVICE_TIMER_INTERVAL;
/* If no link - use faster timer rate to detect link up asap */
if (!netif_carrier_ok(self->ndev))
ctimer = max(ctimer / 2, 1);
mod_timer(&self->service_timer, jiffies + ctimer);
aq_ndev_service_event_schedule(self);
}
static void aq_nic_polling_timer_cb(struct timer_list *t)
{
struct aq_nic_s *self = from_timer(self, t, polling_timer);
struct aq_vec_s *aq_vec = NULL;
unsigned int i = 0U;
for (i = 0U, aq_vec = self->aq_vec[0];
self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
aq_vec_isr(i, (void *)aq_vec);
mod_timer(&self->polling_timer, jiffies +
AQ_CFG_POLLING_TIMER_INTERVAL);
}
int aq_nic_ndev_register(struct aq_nic_s *self)
{
int err = 0;
if (!self->ndev) {
err = -EINVAL;
goto err_exit;
}
#ifdef AQ_CFG_FAST_START
self->aq_hw->fast_start_enabled = true;
#endif
err = hw_atl_utils_initfw(self->aq_hw, &self->aq_fw_ops);
if (err)
goto err_exit;
mutex_lock(&self->fwreq_mutex);
err = self->aq_fw_ops->get_mac_permanent(self->aq_hw,
self->ndev->dev_addr);
mutex_unlock(&self->fwreq_mutex);
if (err)
goto err_exit;
#if defined(AQ_CFG_MAC_ADDR_PERMANENT)
{
static u8 mac_addr_permanent[] = AQ_CFG_MAC_ADDR_PERMANENT;
ether_addr_copy(self->ndev->dev_addr, mac_addr_permanent);
}
#endif
for (self->aq_vecs = 0; self->aq_vecs < aq_nic_get_cfg(self)->vecs;
self->aq_vecs++) {
self->aq_vec[self->aq_vecs] =
aq_vec_alloc(self, self->aq_vecs, aq_nic_get_cfg(self));
if (!self->aq_vec[self->aq_vecs]) {
err = -ENOMEM;
goto err_exit;
}
}
netif_carrier_off(self->ndev);
#ifndef __VMKLNX__
netif_tx_disable(self->ndev);
#endif
err = register_netdev(self->ndev);
if (err)
goto err_exit;
err_exit:
return err;
}
void aq_nic_ndev_init(struct aq_nic_s *self)
{
const struct aq_hw_caps_s *aq_hw_caps = self->aq_nic_cfg.aq_hw_caps;
struct aq_nic_cfg_s *aq_nic_cfg = &self->aq_nic_cfg;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 33)
self->ndev->hw_features |= aq_hw_caps->hw_features;
#endif
self->ndev->features = aq_hw_caps->hw_features;
#ifndef __VMKLNX__
self->ndev->vlan_features |= NETIF_F_HW_CSUM | NETIF_F_RXCSUM |
NETIF_F_RXHASH | NETIF_F_SG |
NETIF_F_LRO | NETIF_F_TSO;
#endif
self->ndev->priv_flags = aq_hw_caps->hw_priv_flags;
#ifndef __VMKLNX__
self->ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
#endif
self->msg_enable = NETIF_MSG_DRV|NETIF_MSG_LINK;
self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
self->ndev->max_mtu = aq_hw_caps->mtu - ETH_FCS_LEN - ETH_HLEN;
#elif (RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(7, 5))
self->ndev->extended->min_mtu = ETH_MIN_MTU;
self->ndev->extended->max_mtu = aq_hw_caps->mtu -
ETH_FCS_LEN - ETH_HLEN;
#endif
#ifdef __VMKLNX__
self->ndev->real_num_tx_queues = 1;
self->ndev->watchdog_timeo = 5 * HZ;
#endif
}
void aq_nic_set_tx_ring(struct aq_nic_s *self, unsigned int idx,
struct aq_ring_s *ring)
{
self->aq_ring_tx[idx] = ring;
}
struct net_device *aq_nic_get_ndev(struct aq_nic_s *self)
{
return self->ndev;
}
int aq_nic_init(struct aq_nic_s *self)
{
struct aq_vec_s *aq_vec = NULL;
int err = 0;
unsigned int i = 0U;
self->power_state = AQ_HW_POWER_STATE_D0;
mutex_lock(&self->fwreq_mutex);
err = self->aq_hw_ops->hw_reset(self->aq_hw);
mutex_unlock(&self->fwreq_mutex);
if (err < 0)
goto err_exit;
err = self->aq_hw_ops->hw_init(self->aq_hw,
aq_nic_get_ndev(self)->dev_addr);
if (err < 0)
goto err_exit;
/*
* [ATLDRV-742] Workaround for Bermuda:
* Disable PTP block because it can cause data path problems.
* This should be done by PHY provisioning but a lot of units with
* enabled PTP block has been shipped already.
* So, we workaround this issue in the driver.
*/
if (self->aq_nic_cfg.aq_hw_caps->quirks & AQ_NIC_QUIRK_BAD_PTP) {
self->aq_hw->phy_id = HW_ATL_PHY_ID_MAX;
if (aq_phy_init(self->aq_hw))
aq_phy_disable_ptp(self->aq_hw);
}
for (i = 0U, aq_vec = self->aq_vec[0];
self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
aq_vec_init(aq_vec, self->aq_hw_ops, self->aq_hw);
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 17, 0)) ||\
(RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(7, 2))
err = aq_ptp_ring_alloc(self);
if (err < 0)
goto err_exit;
err = aq_ptp_ring_init(self);
if (err < 0)
goto err_exit;
#endif
INIT_WORK(&self->link_update_task, aq_nic_update_link_task_cb);
netif_carrier_off(self->ndev);
err_exit:
return err;
}
int aq_nic_start(struct aq_nic_s *self)
{
struct aq_vec_s *aq_vec = NULL;
unsigned int i = 0U;
int err = 0;
err = self->aq_hw_ops->hw_multicast_list_set(self->aq_hw,
self->mc_list.ar,
self->mc_list.count);
if (err < 0)
goto err_exit;
err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw,
self->packet_filter);
if (err < 0)
goto err_exit;
for (i = 0U, aq_vec = self->aq_vec[0];
self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
err = aq_vec_start(aq_vec);
if (err < 0)
goto err_exit;
}
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 17, 0)) ||\
(RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(7, 2))
err = aq_ptp_ring_start(self);
if (err < 0)
goto err_exit;
#endif
err = self->aq_hw_ops->hw_start(self->aq_hw);
if (err < 0)
goto err_exit;
err = aq_nic_update_interrupt_moderation_settings(self);
if (err)
goto err_exit;
INIT_WORK(&self->service_task, aq_nic_service_task);
aq_nic_setloopback(self, self->aq_nic_cfg.test_loopback);
timer_setup(&self->service_timer, aq_nic_service_timer_cb, 0);
aq_nic_service_timer_cb(&self->service_timer);
if (self->aq_nic_cfg.is_polling) {
timer_setup(&self->polling_timer, aq_nic_polling_timer_cb, 0);
mod_timer(&self->polling_timer, jiffies +
AQ_CFG_POLLING_TIMER_INTERVAL);
} else {
for (i = 0U, aq_vec = self->aq_vec[0];
self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
err = aq_pci_func_alloc_irq(self, i, self->ndev->name,
aq_vec_isr, aq_vec,
aq_vec_get_affinity_mask(aq_vec));
if (err < 0)
goto err_exit;
}
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 17, 0)) ||\
(RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(7, 2))
err = aq_ptp_irq_alloc(self);
if (err < 0)
goto err_exit;
#endif
if (self->aq_nic_cfg.link_irq_vec) {
err = aq_pci_func_alloc_irq(self,
self->aq_nic_cfg.link_irq_vec,
self->ndev->name,
aq_linkstate_isr, self,
NULL);
if (err < 0)
goto err_exit;
}
err = self->aq_hw_ops->hw_irq_enable(self->aq_hw,
AQ_CFG_IRQ_MASK);
if (err < 0)
goto err_exit;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 33)
err = netif_set_real_num_tx_queues(self->ndev, self->aq_vecs);
if (err < 0)
goto err_exit;
err = netif_set_real_num_rx_queues(self->ndev, self->aq_vecs);
if (err < 0)
goto err_exit;
#endif
netif_tx_start_all_queues(self->ndev);
err_exit:
return err;
}
unsigned int aq_nic_map_skb(struct aq_nic_s *self,
struct sk_buff *skb,
struct aq_ring_s *ring)
{
unsigned int ret = 0U;
unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
unsigned int frag_count = 0U;
unsigned int dx = ring->sw_tail;
struct aq_ring_buff_s *first = NULL;
bool need_context_tag = false;
struct aq_ring_buff_s *dx_buff = &ring->buff_ring[dx];
dx_buff->flags = 0U;
if (skb_is_gso(skb)) {
dx_buff->mss = skb_shinfo(skb)->gso_size;
dx_buff->is_gso = 1U;
dx_buff->len_pkt = skb->len;
dx_buff->len_l2 = ETH_HLEN;
dx_buff->len_l3 = ip_hdrlen(skb);
dx_buff->len_l4 = tcp_hdrlen(skb);
dx_buff->eop_index = 0xffffU;
dx_buff->is_ipv6 =
(ip_hdr(skb)->version == 6) ? 1U : 0U;
need_context_tag = true;
}
if (self->aq_nic_cfg.is_vlan_tx_insert && skb_vlan_tag_present(skb)) {
dx_buff->vlan_tx_tag = skb_vlan_tag_get(skb);
dx_buff->len_pkt = skb->len;
dx_buff->is_vlan = 1U;
need_context_tag = true;
}
if (need_context_tag) {
dx = aq_ring_next_dx(ring, dx);
dx_buff = &ring->buff_ring[dx];
dx_buff->flags = 0U;
++ret;
}
dx_buff->len = skb_headlen(skb);
dx_buff->pa = dma_map_single(aq_nic_get_dev(self),
skb->data,
dx_buff->len,
DMA_TO_DEVICE);
if (unlikely(dma_mapping_error(aq_nic_get_dev(self), dx_buff->pa)))
goto exit;
first = dx_buff;
dx_buff->len_pkt = skb->len;
dx_buff->is_sop = 1U;
dx_buff->is_mapped = 1U;
++ret;
if (skb->ip_summed == CHECKSUM_PARTIAL) {
dx_buff->is_ip_cso = (htons(ETH_P_IP) == skb->protocol) ?
1U : 0U;
if (ip_hdr(skb)->version == 4) {
dx_buff->is_tcp_cso =
(ip_hdr(skb)->protocol == IPPROTO_TCP) ?
1U : 0U;
dx_buff->is_udp_cso =
(ip_hdr(skb)->protocol == IPPROTO_UDP) ?
1U : 0U;
} else if (ip_hdr(skb)->version == 6) {
dx_buff->is_tcp_cso =
(ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP) ?
1U : 0U;
dx_buff->is_udp_cso =
(ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP) ?
1U : 0U;
}
}
#ifdef __VMKLNX__
/*In that case we can get SKB with 1st fragment larger
* than AQ_CFG_TX_FRAME_MAX. Don't worry about map/unmap_single
* map/unmap_page because single works the same as page
*/
if(dx_buff->len > AQ_CFG_TX_FRAME_MAX) {
unsigned int frag_size = dx_buff->len;
dma_addr_t frag_pa = dx_buff->pa;
dx_buff->len = AQ_CFG_TX_FRAME_MAX;
frag_size -= dx_buff->len;
frag_pa += AQ_CFG_TX_FRAME_MAX;
while(frag_size) {
unsigned int buff_size = 0U;
if(frag_size > AQ_CFG_TX_FRAME_MAX) {
buff_size = AQ_CFG_TX_FRAME_MAX;
} else {
buff_size = frag_size;
}
dx = aq_ring_next_dx(ring, dx);
dx_buff = &ring->buff_ring[dx];
dx_buff->flags = 0U;
dx_buff->len = buff_size;
dx_buff->pa = frag_pa;
dx_buff->is_mapped = 1U;
dx_buff->eop_index = 0xffffU;
frag_size -= buff_size;
frag_pa += buff_size;
++ret;
}
}
#endif
for (; nr_frags--; ++frag_count) {
unsigned int frag_len = 0U;
unsigned int buff_offset = 0U;
unsigned int buff_size = 0U;
dma_addr_t frag_pa;
skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_count];
frag_len = skb_frag_size(frag);
while (frag_len) {
if (frag_len > AQ_CFG_TX_FRAME_MAX)
buff_size = AQ_CFG_TX_FRAME_MAX;
else
buff_size = frag_len;
frag_pa = skb_frag_dma_map(aq_nic_get_dev(self),
frag,
buff_offset,
buff_size,
DMA_TO_DEVICE);
if (unlikely(dma_mapping_error(aq_nic_get_dev(self),
frag_pa)))
goto mapping_error;
dx = aq_ring_next_dx(ring, dx);
dx_buff = &ring->buff_ring[dx];
dx_buff->flags = 0U;
dx_buff->len = buff_size;
dx_buff->pa = frag_pa;
dx_buff->is_mapped = 1U;
dx_buff->eop_index = 0xffffU;
frag_len -= buff_size;
buff_offset += buff_size;
++ret;
}
}
first->eop_index = dx;
dx_buff->is_eop = 1U;
dx_buff->skb = skb;
goto exit;
mapping_error:
for (dx = ring->sw_tail;
ret > 0;
--ret, dx = aq_ring_next_dx(ring, dx)) {
dx_buff = &ring->buff_ring[dx];
if (!dx_buff->is_gso && !dx_buff->is_vlan && dx_buff->pa) {
if (unlikely(dx_buff->is_sop)) {
dma_unmap_single(aq_nic_get_dev(self),
dx_buff->pa,
dx_buff->len,
DMA_TO_DEVICE);
} else {
dma_unmap_page(aq_nic_get_dev(self),
dx_buff->pa,
dx_buff->len,
DMA_TO_DEVICE);
}
}
}
exit:
return ret;
}
int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb)
{
struct aq_ring_s *ring = NULL;
unsigned int frags = 0U;
unsigned int vec = skb->queue_mapping % self->aq_nic_cfg.vecs;
unsigned int tc = 0U;
int err = NETDEV_TX_OK;
frags = skb_shinfo(skb)->nr_frags + 1;
ring = self->aq_ring_tx[AQ_NIC_TCVEC2RING(self, tc, vec)];
if (frags > AQ_CFG_SKB_FRAGS_MAX) {
dev_kfree_skb_any(skb);
goto err_exit;
}
aq_ring_update_queue_state(ring);
/* Above status update may stop the queue. Check this. */
if (__netif_subqueue_stopped(self->ndev, ring->idx)) {
err = NETDEV_TX_BUSY;
goto err_exit;
}
frags = aq_nic_map_skb(self, skb, ring);
if (likely(frags)) {
err = self->aq_hw_ops->hw_ring_tx_xmit(self->aq_hw,
ring, frags);
if (err >= 0) {
++ring->stats.tx.packets;
ring->stats.tx.bytes += skb->len;
#ifdef __VMKLNX__
self->ndev->trans_start = jiffies;
#endif
}
} else {
err = NETDEV_TX_BUSY;
}
err_exit:
return err;
}
int aq_nic_update_interrupt_moderation_settings(struct aq_nic_s *self)
{
return self->aq_hw_ops->hw_interrupt_moderation_set(self->aq_hw);
}
int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags)
{
int err = 0;
err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw, flags);
if (err < 0)
goto err_exit;
self->packet_filter = flags;
err_exit:
return err;
}
int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev)
{
#ifndef __VMKLNX__
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
#define netdev_hw_addr dev_addr_list
#define addr da_addr
#endif
#else
#define netdev_hw_addr dev_mc_list
#define addr dmi_addr
#endif
struct netdev_hw_addr *ha = NULL;
unsigned int packet_filter = self->packet_filter;
const struct aq_hw_ops *hw_ops = self->aq_hw_ops;
unsigned int i = 0U;
int err = 0;
self->mc_list.count = 0;
if (netdev_uc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) {
packet_filter |= IFF_PROMISC;
} else {
netdev_for_each_uc_addr(ha, ndev) {
ether_addr_copy(self->mc_list.ar[i++], ha->addr);
if (i >= AQ_HW_MULTICAST_ADDRESS_MAX)
break;
}
}
if (i + netdev_mc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) {
packet_filter |= IFF_ALLMULTI;
} else {
netdev_for_each_mc_addr(ha, ndev) {
ether_addr_copy(self->mc_list.ar[i++], ha->addr);
if (i >= AQ_HW_MULTICAST_ADDRESS_MAX)
break;
}
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33) || defined(__VMKLNX__)
#undef netdev_hw_addr
#undef addr
#endif
if (i > 0 && i <= AQ_HW_MULTICAST_ADDRESS_MAX) {
packet_filter |= IFF_MULTICAST;
self->mc_list.count = i;
err = hw_ops->hw_multicast_list_set(self->aq_hw,
self->mc_list.ar,
self->mc_list.count);
}
return aq_nic_set_packet_filter(self, packet_filter);
}
int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)
if (new_mtu < ETH_MIN_MTU+ETH_HLEN ||
new_mtu > self->aq_nic_cfg.aq_hw_caps->mtu - ETH_FCS_LEN)
return -EINVAL;
#endif
self->aq_nic_cfg.mtu = new_mtu;
return 0;
}
int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev)
{
return self->aq_hw_ops->hw_set_mac_address(self->aq_hw, ndev->dev_addr);
}
unsigned int aq_nic_get_link_speed(struct aq_nic_s *self)
{
return self->link_status.mbps;
}
int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p)
{
u32 *regs_buff = p;
int err = 0;
regs->version = 1;
err = self->aq_hw_ops->hw_get_regs(self->aq_hw,
self->aq_nic_cfg.aq_hw_caps,
regs_buff);
if (err < 0)
goto err_exit;
err_exit:
return err;
}
int aq_nic_get_regs_count(struct aq_nic_s *self)
{
return self->aq_nic_cfg.aq_hw_caps->mac_regs_count;
}
void aq_nic_get_stats(struct aq_nic_s *self, u64 *data)
{
unsigned int i = 0U;
unsigned int count = 0U;
struct aq_stats_s *stats;
struct aq_vec_s *aq_vec = NULL;
if (self->aq_fw_ops->update_stats) {
mutex_lock(&self->fwreq_mutex);
self->aq_fw_ops->update_stats(self->aq_hw);
mutex_unlock(&self->fwreq_mutex);
}
stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
if (!stats)
goto err_exit;
data[i] = stats->uprc + stats->mprc + stats->bprc;
data[++i] = stats->uprc;
data[++i] = stats->mprc;
data[++i] = stats->bprc;
data[++i] = stats->erpt;
data[++i] = stats->uptc + stats->mptc + stats->bptc;
data[++i] = stats->uptc;
data[++i] = stats->mptc;
data[++i] = stats->bptc;
data[++i] = stats->ubrc;
data[++i] = stats->ubtc;
data[++i] = stats->mbrc;
data[++i] = stats->mbtc;
data[++i] = stats->bbrc;
data[++i] = stats->bbtc;
data[++i] = stats->ubrc + stats->mbrc + stats->bbrc;
data[++i] = stats->ubtc + stats->mbtc + stats->bbtc;
data[++i] = stats->dma_pkt_rc;
data[++i] = stats->dma_pkt_tc;
data[++i] = stats->dma_oct_rc;
data[++i] = stats->dma_oct_tc;
data[++i] = stats->dpc;
i++;
data += i;
for (i = 0U, aq_vec = self->aq_vec[0];
aq_vec && self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
data += count;
aq_vec_get_sw_stats(aq_vec, data, &count);
}
err_exit:;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 6, 0)
void aq_nic_get_link_ksettings(struct aq_nic_s *self,
struct ethtool_link_ksettings *cmd)
{
if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
cmd->base.port = PORT_FIBRE;
else
cmd->base.port = PORT_TP;
/* This driver supports only 10G capable adapters, so DUPLEX_FULL */
cmd->base.duplex = DUPLEX_FULL;
cmd->base.autoneg = self->aq_nic_cfg.is_autoneg;
ethtool_link_ksettings_zero_link_mode(cmd, supported);
if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10G)
ethtool_link_ksettings_add_link_mode(cmd, supported,
10000baseT_Full);
#if LINUX_VERSION_CODE > KERNEL_VERSION(4, 10, 0)
if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_5G)
ethtool_link_ksettings_add_link_mode(cmd, supported,
5000baseT_Full);
if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_2GS)
ethtool_link_ksettings_add_link_mode(cmd, supported,
2500baseT_Full);
#endif
if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_1G)
ethtool_link_ksettings_add_link_mode(cmd, supported,
1000baseT_Full);
if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_100M)
ethtool_link_ksettings_add_link_mode(cmd, supported,
100baseT_Full);
if (self->aq_nic_cfg.aq_hw_caps->flow_control)
ethtool_link_ksettings_add_link_mode(cmd, supported,
Pause);
ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
else
ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
ethtool_link_ksettings_zero_link_mode(cmd, advertising);