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net: wwan: t7xx: Add NAPI support

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Replace the work queue based RX flow with a NAPI implementation
Remove rx_thread and dpmaif_rxq_work.
Enable GRO on RX path.
Introduce dummy network device. its responsibility is
    - Binds one NAPI object for each DL HW queue and acts as
      the agent of all those network devices.
    - Use NAPI object to poll DL packets.
    - Helps to dispatch each packet to the network interface.

Signed-off-by: Haijun Liu <haijun.liu@mediatek.com>
Co-developed-by: Sreehari Kancharla <sreehari.kancharla@linux.intel.com>
Signed-off-by: Sreehari Kancharla <sreehari.kancharla@linux.intel.com>
Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Acked-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Acked-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Haijun Liu 2022-11-03 14:48:29 +05:30 committed by David S. Miller
parent c053d7b6bd
commit 5545b7b9f2
5 changed files with 161 additions and 166 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/net/wwan/t7xx/t7xx_hif_dpmaif.h
View File

@ -20,6 +20,7 @@
#include <linux/bitmap.h>
#include <linux/mm_types.h>
#include <linux/netdevice.h>
#include <linux/sched.h>
#include <linux/skbuff.h>
#include <linux/spinlock.h>
@ -109,20 +110,14 @@ struct dpmaif_rx_queue {
struct dpmaif_bat_request *bat_req;
struct dpmaif_bat_request *bat_frag;
wait_queue_head_t rx_wq;
struct task_struct *rx_thread;
struct sk_buff_head skb_list;
unsigned int skb_list_max_len;
struct workqueue_struct *worker;
struct work_struct dpmaif_rxq_work;
atomic_t rx_processing;
struct dpmaif_ctrl *dpmaif_ctrl;
unsigned int expect_pit_seq;
unsigned int pit_remain_release_cnt;
struct dpmaif_cur_rx_skb_info rx_data_info;
struct napi_struct napi;
bool sleep_lock_pending;
};
struct dpmaif_tx_queue {
@ -168,7 +163,8 @@ enum dpmaif_txq_state {
struct dpmaif_callbacks {
void (*state_notify)(struct t7xx_pci_dev *t7xx_dev,
enum dpmaif_txq_state state, int txq_number);
void (*recv_skb)(struct t7xx_pci_dev *t7xx_dev, struct sk_buff *skb);
void (*recv_skb)(struct t7xx_ccmni_ctrl *ccmni_ctlb, struct sk_buff *skb,
struct napi_struct *napi);
};
struct dpmaif_ctrl {

218
drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c
View File

@ -45,6 +45,7 @@
#include "t7xx_dpmaif.h"
#include "t7xx_hif_dpmaif.h"
#include "t7xx_hif_dpmaif_rx.h"
#include "t7xx_netdev.h"
#include "t7xx_pci.h"
#define DPMAIF_BAT_COUNT 8192
@ -76,43 +77,6 @@ static unsigned int t7xx_normal_pit_bid(const struct dpmaif_pit *pit_info)
return value;
}
static int t7xx_dpmaif_net_rx_push_thread(void *arg)
{
struct dpmaif_rx_queue *q = arg;
struct dpmaif_ctrl *hif_ctrl;
struct dpmaif_callbacks *cb;
hif_ctrl = q->dpmaif_ctrl;
cb = hif_ctrl->callbacks;
while (!kthread_should_stop()) {
struct sk_buff *skb;
unsigned long flags;
if (skb_queue_empty(&q->skb_list)) {
if (wait_event_interruptible(q->rx_wq,
!skb_queue_empty(&q->skb_list) ||
kthread_should_stop()))
continue;
if (kthread_should_stop())
break;
}
spin_lock_irqsave(&q->skb_list.lock, flags);
skb = __skb_dequeue(&q->skb_list);
spin_unlock_irqrestore(&q->skb_list.lock, flags);
if (!skb)
continue;
cb->recv_skb(hif_ctrl->t7xx_dev, skb);
cond_resched();
}
return 0;
}
static int t7xx_dpmaif_update_bat_wr_idx(struct dpmaif_ctrl *dpmaif_ctrl,
const unsigned int q_num, const unsigned int bat_cnt)
{
@ -726,21 +690,10 @@ static int t7xx_dpmaifq_rx_notify_hw(struct dpmaif_rx_queue *rxq)
return ret;
}
static void t7xx_dpmaif_rx_skb_enqueue(struct dpmaif_rx_queue *rxq, struct sk_buff *skb)
{
unsigned long flags;
spin_lock_irqsave(&rxq->skb_list.lock, flags);
if (rxq->skb_list.qlen < rxq->skb_list_max_len)
__skb_queue_tail(&rxq->skb_list, skb);
else
dev_kfree_skb_any(skb);
spin_unlock_irqrestore(&rxq->skb_list.lock, flags);
}
static void t7xx_dpmaif_rx_skb(struct dpmaif_rx_queue *rxq,
struct dpmaif_cur_rx_skb_info *skb_info)
{
struct dpmaif_ctrl *dpmaif_ctrl = rxq->dpmaif_ctrl;
struct sk_buff *skb = skb_info->cur_skb;
struct t7xx_skb_cb *skb_cb;
u8 netif_id;
@ -758,11 +711,11 @@ static void t7xx_dpmaif_rx_skb(struct dpmaif_rx_queue *rxq,
skb_cb = T7XX_SKB_CB(skb);
skb_cb->netif_idx = netif_id;
skb_cb->rx_pkt_type = skb_info->pkt_type;
t7xx_dpmaif_rx_skb_enqueue(rxq, skb);
dpmaif_ctrl->callbacks->recv_skb(dpmaif_ctrl->t7xx_dev->ccmni_ctlb, skb, &rxq->napi);
}
static int t7xx_dpmaif_rx_start(struct dpmaif_rx_queue *rxq, const unsigned int pit_cnt,
const unsigned long timeout)
const unsigned int budget, int *once_more)
{
unsigned int cur_pit, pit_len, rx_cnt, recv_skb_cnt = 0;
struct device *dev = rxq->dpmaif_ctrl->dev;
@ -777,13 +730,14 @@ static int t7xx_dpmaif_rx_start(struct dpmaif_rx_queue *rxq, const unsigned int
struct dpmaif_pit *pkt_info;
u32 val;
if (!skb_info->msg_pit_received && time_after_eq(jiffies, timeout))
if (!skb_info->msg_pit_received && recv_skb_cnt >= budget)
break;
pkt_info = (struct dpmaif_pit *)rxq->pit_base + cur_pit;
if (t7xx_dpmaif_check_pit_seq(rxq, pkt_info)) {
dev_err_ratelimited(dev, "RXQ%u checks PIT SEQ fail\n", rxq->index);
return -EAGAIN;
*once_more = 1;
return recv_skb_cnt;
}
val = FIELD_GET(PD_PIT_PACKET_TYPE, le32_to_cpu(pkt_info->header));
@ -817,12 +771,7 @@ static int t7xx_dpmaif_rx_start(struct dpmaif_rx_queue *rxq, const unsigned int
}
memset(skb_info, 0, sizeof(*skb_info));
recv_skb_cnt++;
if (!(recv_skb_cnt & DPMAIF_RX_PUSH_THRESHOLD_MASK)) {
wake_up_all(&rxq->rx_wq);
recv_skb_cnt = 0;
}
}
}
@ -837,16 +786,13 @@ static int t7xx_dpmaif_rx_start(struct dpmaif_rx_queue *rxq, const unsigned int
}
}
if (recv_skb_cnt)
wake_up_all(&rxq->rx_wq);
if (!ret)
ret = t7xx_dpmaifq_rx_notify_hw(rxq);
if (ret)
return ret;
return rx_cnt;
return recv_skb_cnt;
}
static unsigned int t7xx_dpmaifq_poll_pit(struct dpmaif_rx_queue *rxq)
@ -863,53 +809,30 @@ static unsigned int t7xx_dpmaifq_poll_pit(struct dpmaif_rx_queue *rxq)
return pit_cnt;
}
static int t7xx_dpmaif_rx_data_collect(struct dpmaif_ctrl *dpmaif_ctrl,
const unsigned int q_num, const unsigned int budget)
static int t7xx_dpmaif_napi_rx_data_collect(struct dpmaif_ctrl *dpmaif_ctrl,
const unsigned int q_num,
const unsigned int budget, int *once_more)
{
struct dpmaif_rx_queue *rxq = &dpmaif_ctrl->rxq[q_num];
unsigned long time_limit;
unsigned int cnt;
int ret = 0;
time_limit = jiffies + msecs_to_jiffies(DPMAIF_WQ_TIME_LIMIT_MS);
cnt = t7xx_dpmaifq_poll_pit(rxq);
if (!cnt)
return ret;
while ((cnt = t7xx_dpmaifq_poll_pit(rxq))) {
unsigned int rd_cnt;
int real_cnt;
ret = t7xx_dpmaif_rx_start(rxq, cnt, budget, once_more);
if (ret < 0)
dev_err(dpmaif_ctrl->dev, "dlq%u rx ERR:%d\n", rxq->index, ret);
rd_cnt = min(cnt, budget);
real_cnt = t7xx_dpmaif_rx_start(rxq, rd_cnt, time_limit);
if (real_cnt < 0)
return real_cnt;
if (real_cnt < cnt)
return -EAGAIN;
}
return 0;
return ret;
}
static void t7xx_dpmaif_do_rx(struct dpmaif_ctrl *dpmaif_ctrl, struct dpmaif_rx_queue *rxq)
int t7xx_dpmaif_napi_rx_poll(struct napi_struct *napi, const int budget)
{
struct dpmaif_hw_info *hw_info = &dpmaif_ctrl->hw_info;
int ret;
ret = t7xx_dpmaif_rx_data_collect(dpmaif_ctrl, rxq->index, rxq->budget);
if (ret < 0) {
/* Try one more time */
queue_work(rxq->worker, &rxq->dpmaif_rxq_work);
t7xx_dpmaif_clr_ip_busy_sts(hw_info);
} else {
t7xx_dpmaif_clr_ip_busy_sts(hw_info);
t7xx_dpmaif_dlq_unmask_rx_done(hw_info, rxq->index);
}
}
static void t7xx_dpmaif_rxq_work(struct work_struct *work)
{
struct dpmaif_rx_queue *rxq = container_of(work, struct dpmaif_rx_queue, dpmaif_rxq_work);
struct dpmaif_ctrl *dpmaif_ctrl = rxq->dpmaif_ctrl;
int ret;
struct dpmaif_rx_queue *rxq = container_of(napi, struct dpmaif_rx_queue, napi);
struct t7xx_pci_dev *t7xx_dev = rxq->dpmaif_ctrl->t7xx_dev;
int ret, once_more = 0, work_done = 0;
atomic_set(&rxq->rx_processing, 1);
/* Ensure rx_processing is changed to 1 before actually begin RX flow */
@ -917,22 +840,52 @@ static void t7xx_dpmaif_rxq_work(struct work_struct *work)
if (!rxq->que_started) {
atomic_set(&rxq->rx_processing, 0);
dev_err(dpmaif_ctrl->dev, "Work RXQ: %d has not been started\n", rxq->index);
return;
dev_err(rxq->dpmaif_ctrl->dev, "Work RXQ: %d has not been started\n", rxq->index);
return work_done;
}
ret = pm_runtime_resume_and_get(dpmaif_ctrl->dev);
if (ret < 0 && ret != -EACCES)
return;
if (!rxq->sleep_lock_pending) {
pm_runtime_get_noresume(rxq->dpmaif_ctrl->dev);
t7xx_pci_disable_sleep(t7xx_dev);
}
t7xx_pci_disable_sleep(dpmaif_ctrl->t7xx_dev);
if (t7xx_pci_sleep_disable_complete(dpmaif_ctrl->t7xx_dev))
t7xx_dpmaif_do_rx(dpmaif_ctrl, rxq);
ret = try_wait_for_completion(&t7xx_dev->sleep_lock_acquire);
if (!ret) {
napi_complete_done(napi, work_done);
rxq->sleep_lock_pending = true;
napi_reschedule(napi);
return work_done;
}
t7xx_pci_enable_sleep(dpmaif_ctrl->t7xx_dev);
pm_runtime_mark_last_busy(dpmaif_ctrl->dev);
pm_runtime_put_autosuspend(dpmaif_ctrl->dev);
rxq->sleep_lock_pending = false;
while (work_done < budget) {
int each_budget = budget - work_done;
int rx_cnt = t7xx_dpmaif_napi_rx_data_collect(rxq->dpmaif_ctrl, rxq->index,
each_budget, &once_more);
if (rx_cnt > 0)
work_done += rx_cnt;
else
break;
}
if (once_more) {
napi_gro_flush(napi, false);
work_done = budget;
t7xx_dpmaif_clr_ip_busy_sts(&rxq->dpmaif_ctrl->hw_info);
} else if (work_done < budget) {
napi_complete_done(napi, work_done);
t7xx_dpmaif_clr_ip_busy_sts(&rxq->dpmaif_ctrl->hw_info);
t7xx_dpmaif_dlq_unmask_rx_done(&rxq->dpmaif_ctrl->hw_info, rxq->index);
} else {
t7xx_dpmaif_clr_ip_busy_sts(&rxq->dpmaif_ctrl->hw_info);
}
t7xx_pci_enable_sleep(rxq->dpmaif_ctrl->t7xx_dev);
pm_runtime_mark_last_busy(rxq->dpmaif_ctrl->dev);
pm_runtime_put_noidle(rxq->dpmaif_ctrl->dev);
atomic_set(&rxq->rx_processing, 0);
return work_done;
}
void t7xx_dpmaif_irq_rx_done(struct dpmaif_ctrl *dpmaif_ctrl, const unsigned int que_mask)
@ -947,7 +900,7 @@ void t7xx_dpmaif_irq_rx_done(struct dpmaif_ctrl *dpmaif_ctrl, const unsigned int
}
rxq = &dpmaif_ctrl->rxq[qno];
queue_work(rxq->worker, &rxq->dpmaif_rxq_work);
napi_schedule(&rxq->napi);
}
static void t7xx_dpmaif_base_free(const struct dpmaif_ctrl *dpmaif_ctrl,
@ -1082,50 +1035,14 @@ int t7xx_dpmaif_rxq_init(struct dpmaif_rx_queue *queue)
int ret;
ret = t7xx_dpmaif_rx_alloc(queue);
if (ret < 0) {
if (ret < 0)
dev_err(queue->dpmaif_ctrl->dev, "Failed to allocate RX buffers: %d\n", ret);
return ret;
}
INIT_WORK(&queue->dpmaif_rxq_work, t7xx_dpmaif_rxq_work);
queue->worker = alloc_workqueue("dpmaif_rx%d_worker",
WQ_UNBOUND | WQ_MEM_RECLAIM | WQ_HIGHPRI, 1, queue->index);
if (!queue->worker) {
ret = -ENOMEM;
goto err_free_rx_buffer;
}
init_waitqueue_head(&queue->rx_wq);
skb_queue_head_init(&queue->skb_list);
queue->skb_list_max_len = queue->bat_req->pkt_buf_sz;
queue->rx_thread = kthread_run(t7xx_dpmaif_net_rx_push_thread,
queue, "dpmaif_rx%d_push", queue->index);
ret = PTR_ERR_OR_ZERO(queue->rx_thread);
if (ret)
goto err_free_workqueue;
return 0;
err_free_workqueue:
destroy_workqueue(queue->worker);
err_free_rx_buffer:
t7xx_dpmaif_rx_buf_free(queue);
return ret;
}
void t7xx_dpmaif_rxq_free(struct dpmaif_rx_queue *queue)
{
if (queue->worker)
destroy_workqueue(queue->worker);
if (queue->rx_thread)
kthread_stop(queue->rx_thread);
skb_queue_purge(&queue->skb_list);
t7xx_dpmaif_rx_buf_free(queue);
}
@ -1188,8 +1105,6 @@ void t7xx_dpmaif_rx_stop(struct dpmaif_ctrl *dpmaif_ctrl)
struct dpmaif_rx_queue *rxq = &dpmaif_ctrl->rxq[i];
int timeout, value;
flush_work(&rxq->dpmaif_rxq_work);
timeout = readx_poll_timeout_atomic(atomic_read, &rxq->rx_processing, value,
!value, 0, DPMAIF_CHECK_INIT_TIMEOUT_US);
if (timeout)
@ -1205,7 +1120,6 @@ static void t7xx_dpmaif_stop_rxq(struct dpmaif_rx_queue *rxq)
{
int cnt, j = 0;
flush_work(&rxq->dpmaif_rxq_work);
rxq->que_started = false;
do {

1
drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.h
View File

@ -112,5 +112,6 @@ int t7xx_dpmaif_bat_alloc(const struct dpmaif_ctrl *dpmaif_ctrl, struct dpmaif_b
const enum bat_type buf_type);
void t7xx_dpmaif_bat_free(const struct dpmaif_ctrl *dpmaif_ctrl,
struct dpmaif_bat_request *bat_req);
int t7xx_dpmaif_napi_rx_poll(struct napi_struct *napi, const int budget);
#endif /* __T7XX_HIF_DPMA_RX_H__ */

89
drivers/net/wwan/t7xx/t7xx_netdev.c
View File

@ -22,6 +22,7 @@
#include <linux/gfp.h>
#include <linux/if_arp.h>
#include <linux/if_ether.h>
#include <linux/ip.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/netdev_features.h>
@ -29,6 +30,7 @@
#include <linux/skbuff.h>
#include <linux/types.h>
#include <linux/wwan.h>
#include <net/ipv6.h>
#include <net/pkt_sched.h>
#include "t7xx_hif_dpmaif_rx.h"
@ -39,13 +41,47 @@
#include "t7xx_state_monitor.h"
#define IP_MUX_SESSION_DEFAULT 0
#define SBD_PACKET_TYPE_MASK GENMASK(7, 4)
static void t7xx_ccmni_enable_napi(struct t7xx_ccmni_ctrl *ctlb)
{
int i;
if (ctlb->is_napi_en)
return;
for (i = 0; i < RXQ_NUM; i++) {
napi_enable(ctlb->napi[i]);
napi_schedule(ctlb->napi[i]);
}
ctlb->is_napi_en = true;
}
static void t7xx_ccmni_disable_napi(struct t7xx_ccmni_ctrl *ctlb)
{
int i;
if (!ctlb->is_napi_en)
return;
for (i = 0; i < RXQ_NUM; i++) {
napi_synchronize(ctlb->napi[i]);
napi_disable(ctlb->napi[i]);
}
ctlb->is_napi_en = false;
}
static int t7xx_ccmni_open(struct net_device *dev)
{
struct t7xx_ccmni *ccmni = wwan_netdev_drvpriv(dev);
struct t7xx_ccmni_ctrl *ccmni_ctl = ccmni->ctlb;
netif_carrier_on(dev);
netif_tx_start_all_queues(dev);
if (!atomic_fetch_inc(&ccmni_ctl->napi_usr_refcnt))
t7xx_ccmni_enable_napi(ccmni_ctl);
atomic_inc(&ccmni->usage);
return 0;
}
@ -53,8 +89,12 @@ static int t7xx_ccmni_open(struct net_device *dev)
static int t7xx_ccmni_close(struct net_device *dev)
{
struct t7xx_ccmni *ccmni = wwan_netdev_drvpriv(dev);
struct t7xx_ccmni_ctrl *ccmni_ctl = ccmni->ctlb;
atomic_dec(&ccmni->usage);
if (atomic_dec_and_test(&ccmni_ctl->napi_usr_refcnt))
t7xx_ccmni_disable_napi(ccmni_ctl);
netif_carrier_off(dev);
netif_tx_disable(dev);
return 0;
@ -127,6 +167,9 @@ static void t7xx_ccmni_start(struct t7xx_ccmni_ctrl *ctlb)
netif_carrier_on(ccmni->dev);
}
}
if (atomic_read(&ctlb->napi_usr_refcnt))
t7xx_ccmni_enable_napi(ctlb);
}
static void t7xx_ccmni_pre_stop(struct t7xx_ccmni_ctrl *ctlb)
@ -149,6 +192,9 @@ static void t7xx_ccmni_post_stop(struct t7xx_ccmni_ctrl *ctlb)
struct t7xx_ccmni *ccmni;
int i;
if (atomic_read(&ctlb->napi_usr_refcnt))
t7xx_ccmni_disable_napi(ctlb);
for (i = 0; i < ctlb->nic_dev_num; i++) {
ccmni = ctlb->ccmni_inst[i];
if (!ccmni)
@ -183,6 +229,9 @@ static void t7xx_ccmni_wwan_setup(struct net_device *dev)
dev->features |= NETIF_F_RXCSUM;
dev->hw_features |= NETIF_F_RXCSUM;
dev->features |= NETIF_F_GRO;
dev->hw_features |= NETIF_F_GRO;
dev->needs_free_netdev = true;
dev->type = ARPHRD_NONE;
@ -190,6 +239,34 @@ static void t7xx_ccmni_wwan_setup(struct net_device *dev)
dev->netdev_ops = &ccmni_netdev_ops;
}
static void t7xx_init_netdev_napi(struct t7xx_ccmni_ctrl *ctlb)
{
int i;
/* one HW, but shared with multiple net devices,
* so add a dummy device for NAPI.
*/
init_dummy_netdev(&ctlb->dummy_dev);
atomic_set(&ctlb->napi_usr_refcnt, 0);
ctlb->is_napi_en = false;
for (i = 0; i < RXQ_NUM; i++) {
ctlb->napi[i] = &ctlb->hif_ctrl->rxq[i].napi;
netif_napi_add_weight(&ctlb->dummy_dev, ctlb->napi[i], t7xx_dpmaif_napi_rx_poll,
NIC_NAPI_POLL_BUDGET);
}
}
static void t7xx_uninit_netdev_napi(struct t7xx_ccmni_ctrl *ctlb)
{
int i;
for (i = 0; i < RXQ_NUM; i++) {
netif_napi_del(ctlb->napi[i]);
ctlb->napi[i] = NULL;
}
}
static int t7xx_ccmni_wwan_newlink(void *ctxt, struct net_device *dev, u32 if_id,
struct netlink_ext_ack *extack)
{
@ -311,7 +388,8 @@ static void init_md_status_notifier(struct t7xx_pci_dev *t7xx_dev)
t7xx_fsm_notifier_register(t7xx_dev->md, md_status_notifier);
}
static void t7xx_ccmni_recv_skb(struct t7xx_pci_dev *t7xx_dev, struct sk_buff *skb)
static void t7xx_ccmni_recv_skb(struct t7xx_ccmni_ctrl *ccmni_ctlb, struct sk_buff *skb,
struct napi_struct *napi)
{
struct t7xx_skb_cb *skb_cb;
struct net_device *net_dev;
@ -321,23 +399,22 @@ static void t7xx_ccmni_recv_skb(struct t7xx_pci_dev *t7xx_dev, struct sk_buff *s
skb_cb = T7XX_SKB_CB(skb);
netif_id = skb_cb->netif_idx;
ccmni = t7xx_dev->ccmni_ctlb->ccmni_inst[netif_id];
ccmni = ccmni_ctlb->ccmni_inst[netif_id];
if (!ccmni) {
dev_kfree_skb(skb);
return;
}
net_dev = ccmni->dev;
skb->dev = net_dev;
pkt_type = skb_cb->rx_pkt_type;
skb->dev = net_dev;
if (pkt_type == PKT_TYPE_IP6)
skb->protocol = htons(ETH_P_IPV6);
else
skb->protocol = htons(ETH_P_IP);
skb_len = skb->len;
netif_rx(skb);
napi_gro_receive(napi, skb);
net_dev->stats.rx_packets++;
net_dev->stats.rx_bytes += skb_len;
}
@ -404,6 +481,7 @@ int t7xx_ccmni_init(struct t7xx_pci_dev *t7xx_dev)
if (!ctlb->hif_ctrl)
return -ENOMEM;
t7xx_init_netdev_napi(ctlb);
init_md_status_notifier(t7xx_dev);
return 0;
}
@ -419,5 +497,6 @@ void t7xx_ccmni_exit(struct t7xx_pci_dev *t7xx_dev)
ctlb->wwan_is_registered = false;
}
t7xx_uninit_netdev_napi(ctlb);
t7xx_dpmaif_hif_exit(ctlb->hif_ctrl);
}

5
drivers/net/wwan/t7xx/t7xx_netdev.h
View File

@ -30,6 +30,7 @@
#define CCMNI_NETDEV_WDT_TO (1 * HZ)
#define CCMNI_MTU_MAX 3000
#define NIC_NAPI_POLL_BUDGET 128
struct t7xx_ccmni {
u8 index;
@ -47,6 +48,10 @@ struct t7xx_ccmni_ctrl {
unsigned int md_sta;
struct t7xx_fsm_notifier md_status_notify;
bool wwan_is_registered;
struct net_device dummy_dev;
struct napi_struct *napi[RXQ_NUM];
atomic_t napi_usr_refcnt;
bool is_napi_en;
};
int t7xx_ccmni_init(struct t7xx_pci_dev *t7xx_dev);