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wifi: defer supplicant start-up

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The SDIO connected wireless device on the PinePhone is not available
on start-up, which leads to the supplicant failing to initalize
'wlan0'. Normally the supplicant would be used in a way that handling
devices that appear at run-time happens gracefully.

Rather than supporting this behavior we defer the start-up of the
supplicant until the device could be openend successfully for now.

Issue #4813
This commit is contained in:
Josef Söntgen 2023-03-10 16:53:35 +01:00 committed by Christian Helmuth
parent 0b08ae09c4
commit eaaedb6ae8
3 changed files with 40 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
repos/pc/src/lib/wifi/socket_call.cc
View File

@ -474,10 +474,6 @@ class Lx::Socket
static Lx::Socket *_socket;
/* implemented in wlan.cc */
extern Blockade *wpa_blockade;
/* implemented in wlan.cc */
void _wifi_report_mac_address(Net::Mac_address const &mac_address);
@ -489,8 +485,6 @@ extern "C" int socketcall_task_function(void *)
void const *mac_addr = nullptr;
wpa_blockade->wakeup();
while (true) {
/*

29
repos/pc/src/lib/wifi/uplink.c
View File

@ -227,6 +227,26 @@ static int uplink_netdev_event(struct notifier_block *this,
}
static int new_device_netdev_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
if (event == NETDEV_REGISTER)
if (uplink_task_struct_ptr)
lx_emul_task_unblock(uplink_task_struct_ptr);
return NOTIFY_DONE;
}
static struct notifier_block new_device_netdev_notifier = {
.notifier_call = new_device_netdev_event,
};
/* implemented by wlan.cc */
extern void wakeup_wpa(void);
static int user_task_function(void *arg)
{
struct netdev_event_notification events;
@ -235,6 +255,12 @@ static int user_task_function(void *arg)
events.nb.notifier_call = uplink_netdev_event;
events.registered = false;
if (register_netdevice_notifier(&new_device_netdev_notifier)) {
printk("%s:%d: could not register netdev notifer for "
"new devices, abort\n", __func__, __LINE__);
return -1;
}
for (;;) {
struct net_device *dev;
@ -246,7 +272,8 @@ static int user_task_function(void *arg)
continue;
/* enable link sensing, repeated calls are handled by testing IFF_UP */
dev_open(dev, 0);
if (dev_open(dev, 0) == 0)
wakeup_wpa();
/* install rx handler once */
if (!netdev_is_rx_handler_busy(dev))

13
repos/pc/src/lib/wifi/wlan.cc
View File

@ -180,7 +180,18 @@ struct Wlan
};
Blockade *wpa_blockade;
static Blockade *wpa_blockade;
extern "C" void wakeup_wpa()
{
static bool called_once = false;
if (called_once)
return;
wpa_blockade->wakeup();
called_once = true;
}
void wifi_init(Env &env, Blockade &blockade)