Wireless interface

[Carmel NY]

On Thu, 24 Jan 2019 14:11:36 -0500, Ernie Luzar stated:

>Carmel NY wrote:
>> Okay, I had some free time today, so I decided to try and get the
>> wireless interface up and running on my FreeBSD 12.0 / amd 64
>> machine. I thought I correctly configured the "wpa_supplicant.conf"
>> file and entered the correct into into the "/etc/rc.conf" file, but
>> it is still not working correctly. Anyway, this is the output when I
>> attempt to restart the network.
>> 
>> # service netif restart
>> Stopping dhclient.
>> dhclient not running? (check /var/run/dhclient/dhclient.wlan0.pid).
>> Stopping Network: lo0 em0 wlan0.
>> lo0: flags=8048<LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
>>         options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
>>         groups: lo
>>         nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
>> em0: flags=8c02<BROADCAST,OACTIVE,SIMPLEX,MULTICAST> metric 0 mtu
>> 1500
>> options=81249b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LRO,WOL_MAGIC,VLAN_HWFILTER>
>> ether 00:1a:a0:89:ca:e4 media: Ethernet autoselect (100baseTX
>> <full-duplex>) status: active
>>         nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
>> wlan0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
>>         ether 00:1b:fc:81:85:7f
>>         groups: wlan
>>         ssid Scorpio-2g channel 3 (2422 MHz 11g)
>>         regdomain FCC country US authmode OPEN privacy OFF txpower 30
>>  bmiss 7 scanvalid 60 bgscan bgscanintvl 300 bgscanidle 250
>> roam:rssi 7 roam:rate 5 protmode CTS
>>         media: IEEE 802.11 Wireless Ethernet autoselect (autoselect)
>>         status: no carrier
>>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>> Destroyed wlan(4) interfaces: wlan0.
>> Created wlan(4) interfaces: wlan0.
>> sendmsg on em0: Permission denied
>> sendmsg on em0: Permission denied
>> sendmsg on em0: Permission denied
>> Starting Network: lo0 em0 wlan0.
>> lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
>>         options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
>>         inet6 ::1 prefixlen 128
>>         inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2
>>         inet 127.0.0.1 netmask 0xff000000
>>         groups: lo
>>         nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
>> em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
>>  1500
>>  options=81249b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LRO,WOL_MAGIC,VLAN_HWFILTER>
>>  ether 00:1a:a0:89:ca:e4 inet6 fe80::21a:a0ff:fe89:cae4%em0 prefixlen
>>  64 scopeid 0x1 inet 192.168.0.101 netmask 0xffffff00 broadcast
>>  192.168.0.255 media: Ethernet autoselect (100baseTX <full-duplex>)
>>         status: active
>>         nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
>> wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0
>> mtu 1500 ether 00:1b:fc:81:85:7f
>>         groups: wlan
>>         ssid Scorpio-2g channel 9 (2452 MHz 11g)
>>         regdomain FCC country US authmode OPEN privacy OFF txpower 30
>>  bmiss 7 scanvalid 60 bgscan bgscanintvl 300 bgscanidle 250
>> roam:rssi 7 roam:rate 5 protmode CTS bintval 0
>>         media: IEEE 802.11 Wireless Ethernet autoselect (autoselect)
>>         status: no carrier
>>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>> 
>> The "/var/run/dhclient/dhclient.wlan0.pid" exists, so I am not sure
>> what that error message is all about. Plus, I have no idea what the
>> "sendmsg on em0: Permission denied" repeated three times is referring
>> to.
>> 
>> The "wpa_supplicant.conf file:
>>      network={
>>              ssid="Scorpio-2g"
>>              scan_ssid=1
>>              key_mgmt=WPA-PSK
>>              psk="SECRET"
>>      }
>>   
>>>From the "/etc/rc.conf file":  
>> ## Wireless
>> wlans_bwi0="wlan0"
>> ifconfig_wlan0="ssid Scorpio-2g DHCP"
>> 
>> the "dmesg" output for this device:
>> bwi0: <Broadcom BCM4318 802.11b/g Wireless Lan> mem
>> 0xfdefe000-0xfdefffff irq 16 at device 1.0 on pci2 bwi0: BBP: id
>> 0x4318, rev 0x2, pkg 0 bwi0: MAC: rev 9
>> bwi0: PHY: type 2, rev 7, ver 3
>> bwi0: RF: manu 0x17f, type 0x2050, rev 8
>> bwi0: invalid antenna gain in sprom
>> 
>> It is situations like this that make me love
>> Microsoft. Connecting a wireless network should not require user
>> intervention other than choosing the network and entering the
>> password. 
>
>I had this problem when I followed the handbook instructions for 
>configuring a wifi card I plugged into my machine back in January
>2017. Through trial and error with a lot of tcpdump logs finally
>figured out that; my firewall was blocking a igmp packet to 224.0.0.22.
>
>Whats happening is the wifi device on the host is trying to verify
>that the wifi device has public internet access as part of the start
>up process. It tries 3 times and then gives up without issuing any 
>meaningful error message.
>
>Be aware that the wifi setup info in the handbook is very out dated.

Unfortunately, my playtime for this quarter is pretty much used up.
Perhaps in three or four months I will revisit this issue.


-- 
Carmel