wifi移植后，连接几分钟后自动断开
最近移植了一个sdio的wifi驱动，能够正常启动。
iwconfig wlan2 essid "China-2205"和/sbin/udhcpc -i wlan2可以正确的连接，然后也可以ping 192.168.0.1也可以ping通
root@J2534:/# modprobe libertas_sdio
[ 22.315000] libertas_sdio: Libertas SDIO driver
[ 22.315000] libertas_sdio: Copyright Pierre Ossman
[ 23.610000] libertas: 00:0b:6c:b6:d6:e3, fw 9.70.3p24, cap 0x00000303
[ 23.610000] libertas: unidentified region code; using the default (USA)
[ 23.660000] cfg80211: Calling CRDA for country: US
[ 23.685000] libertas: wlan2: Marvell WLAN 802.11 adapter
root@J2534:/# wificfg
[ 37.790000] ADDRCONF(NETDEV_UP): wlan2: link is not ready
Searching wireless AP,please wait...
Scanning result:
ESSID key on/off
(1) "ChinaNet-CFEb" on
(2) "chinaNet" off
(3) "router-China 2205" on
you can also enter r/q for:
Rescanning(r)
quit(q)
Pls enter the Router's number[(1)?]:3
Pls enter key[null ?]:79376
The key is 79376 are you sure?[Y/N]
[ 244.325000] cfg80211: Calling CRDA for country: GB
udhcpc (v1.18.4) started
Setting IP address 0.0.0.0 on wlan2
Sending discover...
Sending select for 192.168.0.101...
Lease of 192.168.0.101 obtained, lease time 168000
Setting IP address 192.168.0.101 on wlan2
Deleting routers
route: SIOCDELRT: No such process
Adding router 192.168.0.1
Recreating /etc/resolv.conf
Adding DNS server 202.96.134.133
Adding DNS server 202.96.128.68
Connecting is successful!
root@J2534:/# ifconfig
wlan2 Link encap:Ethernet HWaddr 00:0B:6C:B6:D6:E3
inet addr:192.168.0.101 Bcast:255.255.255.255 Mask:255.255.255.0
inet6 addr: fe80::20b:6cff:feb6:d6e3/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:115 errors:0 dropped:0 overruns:0 frame:0
TX packets:14 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:11378 (11.1 KiB) TX bytes:3104 (3.0 KiB)
root@J2534:/# [ 296.035000] cfg80211: Calling CRDA to update world regulatory domain
root@J2534:/# dmesg|grep cfg80211
[ 758.790000] cfg80211: Calling CRDA for country: GB
[ 791.595000] cfg80211: All devices are disconnected, going to restore regulatory settings
[ 791.595000] cfg80211: Restoring regulatory settings
[ 791.595000] cfg80211: Calling CRDA to update world regulatory domain
static int call_crda(const char *alpha2)
{
char country_env[9 + 2] = "COUNTRY=";
char *envp[] = {
country_env,
NULL
};
if (!is_world_regdom((char *) alpha2))
printk(KERN_INFO "cfg80211: Calling CRDA for country: %c%c\n",
alpha2[0], alpha2[1]);
else
printk(KERN_INFO "cfg80211: Calling CRDA to update world "
"regulatory domain\n");
/* query internal regulatory database (if it exists) */
reg_regdb_query(alpha2);
country_env[8] = alpha2[0];
country_env[9] = alpha2[1];
return kobject_uevent_env(®_pdev->dev.kobj, KOBJ_CHANGE, envp);
}
Description
crda is the Linux wireless central regulatory domain agent. crda is intended to be used by udev scripts and
should not be run manually unless debugging udev scripts. crda is triggered to run by the kernel by sending a
udev event upon a new regulatory domain change. Regulatory domain changes are triggered by the wireless kernel
subsystem (upon initialization and on reception of country IEs), wireless drivers, or userspace (see iw ). Upon a
regulatory domain change the kernel sends a udev change event for the regulatory platform. The kernel ignores reg‐
ulatory domains sent to it if it does not expect them. The regulatory domain is read by crda from the regula‐
tory.bin file.
