static int netvsc_remove(struct hv_device *dev)
{
struct net_device *net;
struct net_device_context *ndev_ctx;
struct netvsc_device *net_device;
net_device = hv_get_drvdata(dev);
net = net_device->ndev;
if (net == NULL) {
dev_err(&dev->device, "No net device to remove\n");
return 0;
}
net_device->start_remove = true;
ndev_ctx = netdev_priv(net);
cancel_delayed_work_sync(&ndev_ctx->dwork);
cancel_work_sync(&ndev_ctx->work);
/* Stop outbound asap */
netif_tx_disable(net);
unregister_netdev(net);
/*
* Call to the vsc driver to let it know that the device is being
* removed
*/
rndis_filter_device_remove(dev);
free_netdev(net);
return 0;
}
static int
nfp_flower_repr_netdev_stop(struct nfp_app *app, struct nfp_repr *repr)
{
netif_tx_disable(repr->netdev);
return nfp_flower_cmsg_portmod(repr, false, repr->netdev->mtu, false);
}
static int netvsc_change_mtu(struct net_device *ndev, int mtu)
{
struct net_device_context *ndevctx = netdev_priv(ndev);
struct hv_device *hdev = ndevctx->device_ctx;
struct netvsc_device *nvdev = hv_get_drvdata(hdev);
struct netvsc_device_info device_info;
int limit = ETH_DATA_LEN;
if (nvdev == NULL || nvdev->destroy)
return -ENODEV;
if (nvdev->nvsp_version >= NVSP_PROTOCOL_VERSION_2)
limit = NETVSC_MTU - ETH_HLEN;
if (mtu < 68 || mtu > limit)
return -EINVAL;
nvdev->start_remove = true;
cancel_work_sync(&ndevctx->work);
netif_tx_disable(ndev);
rndis_filter_device_remove(hdev);
ndev->mtu = mtu;
ndevctx->device_ctx = hdev;
hv_set_drvdata(hdev, ndev);
device_info.ring_size = ring_size;
rndis_filter_device_add(hdev, &device_info);
netif_wake_queue(ndev);
return 0;
}
static int ccmni_close(struct net_device *dev)
{
ccmni_instance_t *ccmni = (ccmni_instance_t *)netdev_priv(dev);
ccmni_ctl_block_t *ccmni_ctl = ccmni_ctl_blk[ccmni->md_id];
ccmni_instance_t *ccmni_tmp = NULL;
if (unlikely(ccmni_ctl == NULL)) {
CCMNI_ERR_MSG(ccmni->md_id, "%s_Close: MD%d ctlb is NULL\n", dev->name, ccmni->md_id);
return -1;
}
atomic_dec(&ccmni->usage);
ccmni_tmp = ccmni_ctl->ccmni_inst[ccmni->index];
if (ccmni != ccmni_tmp)
atomic_dec(&ccmni_tmp->usage);
if (ccmni_ctl->ccci_ops->md_ability & MODEM_CAP_CCMNI_MQ)
netif_tx_disable(dev);
else
netif_stop_queue(dev);
if (unlikely(ccmni_ctl->ccci_ops->md_ability & MODEM_CAP_NAPI))
napi_disable(&ccmni->napi);
CCMNI_INF_MSG(ccmni->md_id, "%s_Close: cnt=(%d, %d)\n",
dev->name, atomic_read(&ccmni->usage), atomic_read(&ccmni_tmp->usage));
return 0;
}
static int netvsc_close(struct net_device *net)
{
struct net_device_context *net_device_ctx = netdev_priv(net);
struct hv_device *device_obj = net_device_ctx->device_ctx;
struct netvsc_device *nvdev = net_device_ctx->nvdev;
int ret;
u32 aread, awrite, i, msec = 10, retry = 0, retry_max = 20;
struct vmbus_channel *chn;
netif_tx_disable(net);
/* Make sure netvsc_set_multicast_list doesn't re-enable filter! */
cancel_work_sync(&net_device_ctx->work);
ret = rndis_filter_close(device_obj);
if (ret != 0) {
netdev_err(net, "unable to close device (ret %d).\n", ret);
return ret;
}
/* Ensure pending bytes in ring are read */
while (true) {
aread = 0;
for (i = 0; i < nvdev->num_chn; i++) {
chn = nvdev->chn_table[i];
if (!chn)
continue;
hv_get_ringbuffer_availbytes(&chn->inbound, &aread,
&awrite);
if (aread)
break;
hv_get_ringbuffer_availbytes(&chn->outbound, &aread,
&awrite);
if (aread)
break;
}
retry++;
if (retry > retry_max || aread == 0)
break;
msleep(msec);
if (msec < 1000)
msec *= 2;
}
if (aread) {
netdev_err(net, "Ring buffer not empty after closing rndis\n");
ret = -ETIMEDOUT;
}
return ret;
}
static int netvsc_close(struct net_device *net)
{
struct net_device_context *net_device_ctx = netdev_priv(net);
struct netvsc_device *nvdev = net_device_ctx->nvdev;
int ret = 0;
u32 aread, i, msec = 10, retry = 0, retry_max = 20;
struct vmbus_channel *chn;
netif_tx_disable(net);
/* No need to close rndis filter if it is removed already */
if (!nvdev)
goto out;
ret = rndis_filter_close(nvdev);
if (ret != 0) {
netdev_err(net, "unable to close device (ret %d).\n", ret);
return ret;
}
/* Ensure pending bytes in ring are read */
while (true) {
aread = 0;
for (i = 0; i < nvdev->num_chn; i++) {
chn = nvdev->chan_table[i].channel;
if (!chn)
continue;
aread = hv_get_bytes_to_read(&chn->inbound);
if (aread)
break;
aread = hv_get_bytes_to_read(&chn->outbound);
if (aread)
break;
}
retry++;
if (retry > retry_max || aread == 0)
break;
msleep(msec);
if (msec < 1000)
msec *= 2;
}
if (aread) {
netdev_err(net, "Ring buffer not empty after closing rndis\n");
ret = -ETIMEDOUT;
}
out:
return ret;
}
static void epping_stop_adapter(epping_adapter_t *pAdapter)
{
if (pAdapter && pAdapter->started) {
EPPING_LOG(LOG1, FL("Disabling queues"));
netif_tx_disable(pAdapter->dev);
netif_carrier_off(pAdapter->dev);
pAdapter->started = false;
#if defined(MSM_PLATFORM) && defined(HIF_PCI) && defined(CONFIG_CNSS)
cnss_request_bus_bandwidth(CNSS_BUS_WIDTH_LOW);
#endif
}
}
static void s6gmac_adjust_link(struct net_device *dev)
{
struct s6gmac *pd = netdev_priv(dev);
struct phy_device *phydev = pd->phydev;
if (pd->link.isup &&
(!phydev->link ||
(pd->link.mbit != phydev->speed) ||
(pd->link.full != phydev->duplex))) {
pd->link.isup = 0;
netif_tx_disable(dev);
if (!phydev->link) {
netif_carrier_off(dev);
phy_print_status(phydev);
}
}
if (!pd->link.isup && phydev->link) {
if (pd->link.full != phydev->duplex) {
u32 maccfg = readl(pd->reg + S6_GMAC_MACCONF2);
if (phydev->duplex)
maccfg |= 1 << S6_GMAC_MACCONF2_FULL;
else
maccfg &= ~(1 << S6_GMAC_MACCONF2_FULL);
writel(maccfg, pd->reg + S6_GMAC_MACCONF2);
}
if (pd->link.giga != (phydev->speed == 1000)) {
u32 fifocfg = readl(pd->reg + S6_GMAC_FIFOCONF5);
u32 maccfg = readl(pd->reg + S6_GMAC_MACCONF2);
maccfg &= ~(S6_GMAC_MACCONF2_IFMODE_MASK
<< S6_GMAC_MACCONF2_IFMODE);
if (phydev->speed == 1000) {
fifocfg |= 1 << S6_GMAC_FIFOCONF5_CFGBYTM;
maccfg |= S6_GMAC_MACCONF2_IFMODE_BYTE
<< S6_GMAC_MACCONF2_IFMODE;
} else {
fifocfg &= ~(1 << S6_GMAC_FIFOCONF5_CFGBYTM);
maccfg |= S6_GMAC_MACCONF2_IFMODE_NIBBLE
<< S6_GMAC_MACCONF2_IFMODE;
}
writel(fifocfg, pd->reg + S6_GMAC_FIFOCONF5);
writel(maccfg, pd->reg + S6_GMAC_MACCONF2);
}
if (!s6dmac_fifo_full(pd->tx_dma, pd->tx_chan))
netif_wake_queue(dev);
s6gmac_linkisup(dev, 1);
}
}
static int netvsc_close(struct net_device *net)
{
struct net_device_context *net_device_ctx = netdev_priv(net);
struct hv_device *device_obj = net_device_ctx->device_ctx;
int ret;
netif_tx_disable(net);
/* Make sure netvsc_set_multicast_list doesn't re-enable filter! */
cancel_work_sync(&net_device_ctx->work);
ret = rndis_filter_close(device_obj);
if (ret != 0)
netdev_err(net, "unable to close device (ret %d).\n", ret);
return ret;
}
epping_adapter_t *epping_add_adapter(epping_context_t *pEpping_ctx,
tSirMacAddr macAddr,
tCDF_CON_MODE device_mode)
{
struct net_device *dev;
epping_adapter_t *pAdapter;
dev = alloc_netdev(sizeof(epping_adapter_t), "wifi%d",
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 17, 0))
NET_NAME_UNKNOWN,
#endif
ether_setup);
if (dev == NULL) {
EPPING_LOG(CDF_TRACE_LEVEL_FATAL,
"%s: Cannot allocate epping_adapter_t\n", __func__);
return NULL;
}
pAdapter = netdev_priv(dev);
cdf_mem_zero(pAdapter, sizeof(*pAdapter));
pAdapter->dev = dev;
pAdapter->pEpping_ctx = pEpping_ctx;
pAdapter->device_mode = device_mode; /* station, SAP, etc */
cdf_mem_copy(dev->dev_addr, (void *)macAddr, sizeof(tSirMacAddr));
cdf_mem_copy(pAdapter->macAddressCurrent.bytes,
macAddr, sizeof(tSirMacAddr));
cdf_spinlock_init(&pAdapter->data_lock);
cdf_nbuf_queue_init(&pAdapter->nodrop_queue);
pAdapter->epping_timer_state = EPPING_TX_TIMER_STOPPED;
cdf_softirq_timer_init(epping_get_cdf_ctx(), &pAdapter->epping_timer,
epping_timer_expire, dev, CDF_TIMER_TYPE_SW);
dev->type = ARPHRD_IEEE80211;
dev->netdev_ops = &epping_drv_ops;
dev->watchdog_timeo = 5 * HZ; /* XXX */
dev->tx_queue_len = EPPING_TXBUF - 1; /* 1 for mgmt frame */
if (epping_register_adapter(pAdapter) == 0) {
EPPING_LOG(LOG1, FL("Disabling queues"));
netif_tx_disable(dev);
netif_carrier_off(dev);
return pAdapter;
} else {
epping_destroy_adapter(pAdapter);
return NULL;
}
}
static int ec_bhf_stop(struct net_device *net_dev)
{
struct ec_bhf_priv *priv = netdev_priv(net_dev);
struct device *dev = PRIV_TO_DEV(priv);
hrtimer_cancel(&priv->hrtimer);
ec_bhf_reset(priv);
netif_tx_disable(net_dev);
dma_free_coherent(dev, priv->tx_buf.alloc_len,
priv->tx_buf.alloc, priv->tx_buf.alloc_phys);
dma_free_coherent(dev, priv->rx_buf.alloc_len,
priv->rx_buf.alloc, priv->rx_buf.alloc_phys);
return 0;
}
static void hfi1_vnic_down(struct hfi1_vnic_vport_info *vinfo)
{
struct hfi1_devdata *dd = vinfo->dd;
u8 i;
clear_bit(HFI1_VNIC_UP, &vinfo->flags);
netif_carrier_off(vinfo->netdev);
netif_tx_disable(vinfo->netdev);
idr_remove(&dd->vnic.vesw_idr, vinfo->vesw_id);
/* ensure irqs see the change */
hfi1_vnic_synchronize_irq(dd);
/* remove unread skbs */
for (i = 0; i < vinfo->num_rx_q; i++) {
struct hfi1_vnic_rx_queue *rxq = &vinfo->rxq[i];
napi_disable(&rxq->napi);
skb_queue_purge(&rxq->skbq);
}
}
static int ccmni_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
int md_id, md_id_irat, usage_cnt;
ccmni_instance_t *ccmni_irat;
ccmni_instance_t *ccmni = (ccmni_instance_t *)netdev_priv(dev);
ccmni_instance_t *ccmni_tmp = NULL;
ccmni_ctl_block_t *ctlb = NULL;
ccmni_ctl_block_t *ctlb_irat = NULL;
unsigned int timeout = 0;
switch (cmd) {
case SIOCSTXQSTATE:
/* ifru_ivalue[3~0]:start/stop; ifru_ivalue[7~4]:reserve; */
/* ifru_ivalue[15~8]:user id, bit8=rild, bit9=thermal */
/* ifru_ivalue[31~16]: watchdog timeout value */
ctlb = ccmni_ctl_blk[ccmni->md_id];
if ((ifr->ifr_ifru.ifru_ivalue & 0xF) == 0) {
if (atomic_read(&ccmni->usage) > 0) {
atomic_dec(&ccmni->usage);
if (ctlb->ccci_ops->md_ability & MODEM_CAP_CCMNI_MQ)
netif_tx_disable(dev);
else
netif_stop_queue(dev);
/* stop queue won't stop Tx watchdog (ndo_tx_timeout) */
timeout = (ifr->ifr_ifru.ifru_ivalue & 0xFFFF0000) >> 16;
if (timeout == 0)
dev->watchdog_timeo = 60*HZ;
else
dev->watchdog_timeo = timeout*HZ;
ccmni_tmp = ctlb->ccmni_inst[ccmni->index];
if (ccmni_tmp != ccmni) { /* iRAT ccmni */
usage_cnt = atomic_read(&ccmni->usage);
atomic_set(&ccmni_tmp->usage, usage_cnt);
}
}
} else {
if (atomic_read(&ccmni->usage) <= 0) {
/*
* Set the current state of a WiMAX device [unlocking version of
* wimax_state_change().
*/
void __wimax_state_change(struct wimax_dev *wimax_dev, enum wimax_st new_state)
{
struct device *dev = wimax_dev_to_dev(wimax_dev);
enum wimax_st old_state = wimax_dev->state;
struct sk_buff *stch_skb;
void *header;
d_fnstart(3, dev, "(wimax_dev %p new_state %u [old %u])\n",
wimax_dev, new_state, old_state);
if (WARN_ON(new_state >= __WIMAX_ST_INVALID)) {
dev_err(dev, "SW BUG: requesting invalid state %u\n",
new_state);
goto out;
}
if (old_state == new_state)
goto out;
header = NULL; /* gcc complains? can't grok why */
stch_skb = wimax_gnl_re_state_change_alloc(
wimax_dev, new_state, old_state, &header);
/* Verify the state transition and do exit-from-state actions */
switch (old_state) {
case __WIMAX_ST_NULL:
__check_new_state(old_state, new_state,
1 << WIMAX_ST_DOWN);
break;
case WIMAX_ST_DOWN:
__check_new_state(old_state, new_state,
1 << __WIMAX_ST_QUIESCING
| 1 << WIMAX_ST_UNINITIALIZED
| 1 << WIMAX_ST_RADIO_OFF);
break;
case __WIMAX_ST_QUIESCING:
__check_new_state(old_state, new_state, 1 << WIMAX_ST_DOWN);
break;
case WIMAX_ST_UNINITIALIZED:
__check_new_state(old_state, new_state,
1 << __WIMAX_ST_QUIESCING
| 1 << WIMAX_ST_RADIO_OFF);
break;
case WIMAX_ST_RADIO_OFF:
__check_new_state(old_state, new_state,
1 << __WIMAX_ST_QUIESCING
| 1 << WIMAX_ST_READY);
break;
case WIMAX_ST_READY:
__check_new_state(old_state, new_state,
1 << __WIMAX_ST_QUIESCING
| 1 << WIMAX_ST_RADIO_OFF
| 1 << WIMAX_ST_SCANNING
| 1 << WIMAX_ST_CONNECTING
| 1 << WIMAX_ST_CONNECTED);
break;
case WIMAX_ST_SCANNING:
__check_new_state(old_state, new_state,
1 << __WIMAX_ST_QUIESCING
| 1 << WIMAX_ST_RADIO_OFF
| 1 << WIMAX_ST_READY
| 1 << WIMAX_ST_CONNECTING
| 1 << WIMAX_ST_CONNECTED);
break;
case WIMAX_ST_CONNECTING:
__check_new_state(old_state, new_state,
1 << __WIMAX_ST_QUIESCING
| 1 << WIMAX_ST_RADIO_OFF
| 1 << WIMAX_ST_READY
| 1 << WIMAX_ST_SCANNING
| 1 << WIMAX_ST_CONNECTED);
break;
case WIMAX_ST_CONNECTED:
__check_new_state(old_state, new_state,
1 << __WIMAX_ST_QUIESCING
| 1 << WIMAX_ST_RADIO_OFF
| 1 << WIMAX_ST_READY);
netif_tx_disable(wimax_dev->net_dev);
netif_carrier_off(wimax_dev->net_dev);
break;
case __WIMAX_ST_INVALID:
default:
dev_err(dev, "SW BUG: wimax_dev %p is in unknown state %u\n",
wimax_dev, wimax_dev->state);
WARN_ON(1);
goto out;
}
/* Execute the actions of entry to the new state */
switch (new_state) {
case __WIMAX_ST_NULL:
dev_err(dev, "SW BUG: wimax_dev %p entering NULL state "
"from %u\n", wimax_dev, wimax_dev->state);
WARN_ON(1); /* Nobody can enter this state */
break;
case WIMAX_ST_DOWN:
break;
case __WIMAX_ST_QUIESCING:
break;
case WIMAX_ST_UNINITIALIZED:
break;
case WIMAX_ST_RADIO_OFF:
break;
case WIMAX_ST_READY:
break;
case WIMAX_ST_SCANNING:
break;
case WIMAX_ST_CONNECTING:
break;
case WIMAX_ST_CONNECTED:
netif_carrier_on(wimax_dev->net_dev);
netif_wake_queue(wimax_dev->net_dev);
break;
case __WIMAX_ST_INVALID:
default:
BUG();
}
__wimax_state_set(wimax_dev, new_state);
if (stch_skb)
wimax_gnl_re_state_change_send(wimax_dev, stch_skb, header);
out:
d_fnend(3, dev, "(wimax_dev %p new_state %u [old %u]) = void\n",
wimax_dev, new_state, old_state);
return;
}
