iwlwifi/ko

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This page is a translated version of the page Iwlwifi and the translation is 88% complete.

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Warning: Display title "iwlwifi/ko" overrides earlier display title "Iwlwifi".

Resources

iwlwifi인텔의 현재 무선 네트워크 칩을 구동하는 무선 네트워크 장치 드라이버입니다.

커널

동작하게 하려면 일부 커널 설정이 필요합니다. (장치에 따라) 드라이버에서 802.11a/b/g/n/ac를 지원하므로, IEEE 802.11를 활성화해야 합니다.

IEEE 802.11

Activate at least cfg80211 and mac80211. Some wireless drivers also require a rate control algorithm.

커널 linux-4.1
[*] Networking support  --->
    [*] Wireless  --->
        <*>   cfg80211 - wireless configuration API
        [ ]     nl80211 testmode command
        [ ]     enable developer warnings
        [ ]     cfg80211 regulatory debugging
        [ ]     cfg80211 certification onus
        [*]     enable powersave by default
        [ ]     cfg80211 DebugFS entries
        [ ]     use statically compiled regulatory rules database
        [ ]     cfg80211 wireless extensions compatibility
        <*>   Generic IEEE 802.11 Networking Stack (mac80211)
        [*]   Minstrel
        [*]     Minstrel 802.11n support
        [ ]       Minstrel 802.11ac support
              Default rate control algorithm (Minstrel)  --->
        [ ]   Enable mac80211 mesh networking (pre-802.11s) support
        -*-   Enable LED triggers
        [ ]   Export mac80211 internals in DebugFS
        [ ]   Trace all mac80211 debug messages
        [ ]   Select mac80211 debugging features  ----

Minstrel and its 802.11n support is a rate control algorithm.

iwlwifi 장치 드라이버

인텔의 현재 무선 네트워크 칩에 이 드라이버를 사용하십시오. 여기에 나타난대로 모듈<M>로 설정하십시오. 또한 펌웨어 표모듈 칸에서 필요한 내용에 따라 DVM 옵션 또는 MVM 옵션을 수정하십시오.

커널 linux-4.9
Device Drivers  --->
 
        [*] Network device support  --->
 
        --- Network device support
        [*]   Wireless LAN  --->
 
            --- Wireless LAN
            [ ]   ADMtek devices
            [ ]   Atheros/Qualcomm devices
            [ ]   Atmel devices
            [ ]   Broadcom devices
            [ ]   Cisco devices
            [*]   Intel devices
            < >     Intel PRO/Wireless 2100 Network Connection
            < >     Intel PRO/Wireless 2200BG and 2915ABG Network Connection
            < >     Intel Wireless WiFi 4965AGN (iwl4965)
            < >     Intel PRO/Wireless 3945ABG/BG Network Connection (iwl3945)
            <M>     Intel Wireless WiFi Next Gen AGN - Wireless-N/Advanced-N/Ultimate-N (iwlwifi)
            <M>       Intel Wireless WiFi DVM Firmware support
            <M>       Intel Wireless WiFi MVM Firmware support
            [ ]       Enable broadcast filtering (NEW)
            [ ]       Enable runtime power management mode for PCIe devices (NEW)
                      Debugging Options  --->
            [ ]   Intersil devices
            [ ]   Marvell devices
            [ ]   MediaTek devices
            [ ]   Ralink devices
            [ ]   Realtek devices
            [ ]   Redpine Signals Inc devices
            [ ]   STMicroelectronics devices
            [ ]   Texas Instrument devices
            [ ]   ZyDAS devices
            < >   Simulated radio testing tool for mac80211
            < >   Wireless RNDIS USB support
중요
커널에 드라이버를 모듈(<M>) 대신 넣는 방식(<*>)으로 빌드하면, 펌웨어도 커널에 넣어 빌드해야합니다. 내장 설정 활용 섹션을 확인하십시오.
커널 설정을 바꾸고 나면 커널 재 빌드를 잊지 마십시오.

After rebuilding the kernel and rebooting with this kernel, the selected options can be verified as follows:

참고
Support for the /proc/config.gz pseudo-file is enabled through the Kernel/IKCONFIG_Support feature.
user $zgrep 'IWLWIFI\|IWLDVM\|IWLMVM' /proc/config.gz

펌웨어

이 표en에 나온 대로 개별 장치의 펌웨어가 필요합니다. sys-kernel/linux-firmware 꾸러미와 장치별 sys-firmware/iwlxxxx-*ucode 꾸러미로 있습니다.

root #emerge --ask sys-kernel/linux-firmware

내장 설정 활용

모듈(<M>)대신 커널 내장형으로 드라이버를 빌드하면, 펌웨어도 커널에 넣어en 빌드해야합니다.

커널 linux-4.1
Device Drivers  --->
 
            Generic Driver Options  --->
 
            -*- Userspace firmware loading support
            [ ]   Include in-kernel firmware blobs in kernel binary
            (iwlwifi-xxxx.ucode) External firmware blobs to build into the kernel binary
            (/lib64/firmware) Firmware blobs root directory
            [ ] Fallback user-helper invocation for firmware loading

이 경우 iwlwifi-xxxx.ucode 대신 정확한 펌웨어 이름으로 바꾸십시오. FW_LOADER_USER_HELPER_FALLBACK 설정 변수에 몇가지 사항을 확인해봐야 할 수도 있습니다.

Network device names

Network device names eth0, wlan0, etc. as provided by the kernel could be changed on boot (see dmesg) by the /lib/udev/rules.d/80-net-name-slot.rules udev rule.

To keep the classic naming this rule can be overwritten with an equally named empty file in the /etc/udev/rules.d directory:

root #touch /etc/udev/rules.d/80-net-name-slot.rules


Testing

After a reboot with the new kernel or after loading the modules, the device can be checked for availability by using following methods:

/sys file system

Get the device name by listing the /sys/class/net directory contents using ls -al or the tree command (provided by the app-text/tree package):

user $tree /sys/class/net
/sys/class/net/
├── enp2s14 -> ../../devices/pci0000:00/0000:00:1e.0/0000:02:0e.0/net/enp2s14
├── lo -> ../../devices/virtual/net/lo
├── sit0 -> ../../devices/virtual/net/sit0
└── wlp8s0 -> ../../devices/pci0000:00/0000:00:1c.0/0000:08:00.0/net/wlp8s0

ip command

To obtain the device name and verify that the wireless card is detected, execute the following ip command:

user $ip addr
3: wlan0:   ...

ifconfig command

The ifconfig command is provided through the sys-apps/net-tools package. Use ifconfig -a to list all detected network cards, even those that are not enabled/active yet:

user $ifconfig -a
wlan0     ...

A network card can be activated as follows:

root #ifconfig -v wlan0 up
SIOCSIFFLAGS: Operation not possible due to RF-kill
WARNING: at least one error occurred. (-1)

In this example, enabling the wireless card failed as a radio frequency kill state is set (usually to keep power consumption at bay and not connect by accident to a wireless network).

iw command

If the wireless network card driver supports the nl80211 stack, then the iw command as offered by the net-wireless/iw package can show the detected wireless cards:

root #iw dev
   phy#0
	Interface wlan0
		ifindex 4
		type managed

modprobe와 modinfo

modprobe 에서는 어떤 결과도 나오지 말아야 합니다:

root #modprobe iwlwifi

드라이버 모듈에 대한 자세한 내용은 modinfo iwlwifi 명령에서 확인할 수 있습니다.

user $modinfo iwlwifi

lspci

lspci 명령에서 Kernel driver in use:Kernel modules: 두 부분에 iwlwifi가 나타나야합니다.

root #lspci -k
xx:xx.x Network controller: Intel Corporation Wireless xxxx
        Kernel driver in use: iwlwifi
        Kernel modules: iwlwifi

xx:xx.x 식별자는 dmesg에서 지정 정보를 찾아볼 때 쓸만합니다.

dmesg

Check the output of dmesg. Replace 03:00.0 with the identifier from lspci and wlp with the network interface name.

user $dmesg | grep -i -E '03:00.0|wlp|iwl|80211'
[    1.200902] pci 0000:03:00.0: [8086:0082] type 00 class 0x028000
[    1.201065] pci 0000:03:00.0: reg 0x10: [mem 0xf7d00000-0xf7d01fff 64bit]
[    1.201776] pci 0000:03:00.0: PME# supported from D0 D3hot D3cold
[    1.201999] pci 0000:03:00.0: System wakeup disabled by ACPI
[   18.260461] iwlwifi 0000:03:00.0: enabling device (0100 -> 0102)
[   18.260598] iwlwifi 0000:03:00.0: can't disable ASPM; OS doesn't have ASPM control
[   18.419884] iwlwifi 0000:03:00.0: loaded firmware version 18.168.6.1 op_mode iwldvm
[   18.671329] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUG enabled
[   18.671330] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUGFS enabled
[   18.671330] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEVICE_TRACING disabled
[   18.671332] iwlwifi 0000:03:00.0: Detected Intel(R) Centrino(R) Advanced-N 6205 AGN, REV=0xB0
[   18.673421] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[   18.705882] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs'
[   18.706468] iwlwifi 0000:03:00.0 wlp3s0: renamed from wlan0
[   23.286871] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
    ......... snip .........
[   48.176954] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[   92.720710] wlp3s0: authenticate with my WLAN AP
[   92.724440] wlp3s0: send auth to my WLAN AP (try 1/3)
[   92.728436] wlp3s0: authenticated
[   92.728646] wlp3s0: waiting for beacon from my WLAN AP
[   92.821389] wlp3s0: associate with my WLAN AP (try 1/3)
[   92.828148] wlp3s0: RX AssocResp from my WLAN AP (capab=0x431 status=0 aid=4)
[   92.853124] wlp3s0: associated
[   92.853173] IPv6: ADDRCONF(NETDEV_CHANGE): wlp3s0: link becomes ready

문제 해결

Kernel not loaded

Check if the correct kernel is loaded. This can be accomplished as follows (depends on the IKCONFIG feature):

user $zgrep CONFIG_IWL /proc/config.gz

펌웨어 문제

  • udev 또는 systemd를 사용하는 시스템에는 커널에서 바이너리 블롭을 불러오도록 설정해야합니다. 이 경우, 무선 카드 펌웨어는 불러와야 할 펌웨어입니다. 이 방식으로 커널을 설정하는 자세한 방법은 젠투 포럼의 다음 스레드에서 찾아볼 수 있습니다: FW_LOADER_USER_HELPER_FALLBACK.

무선 연결이 동작하지 않네요

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