> For the complete documentation index, see [llms.txt](https://book.bsdcn.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.bsdcn.org/man/man4/iwm.4.md).

# iwm.4

`iwm` — Intel IEEE 802.11ac 无线网络驱动

## 名称

`iwm`

## 概要

`要将此驱动编译进内核，请在你的内核配置文件中加入以下行：`

> device iwm device pci device wlan device firmware

`你还需要为设备选择固件。从以下选项中选择：`

> device iwm3160fw device iwm3168fw device iwm7260fw device iwm7265fw device iwm7265Dfw device iwm8000Cfw device iwm8265fw device iwm9000fw device iwm9260fw

`或者你可以使用`

> device iwmfw

`来包含全部。`

`或者，要在引导时以模块形式加载该驱动，请在 loader.conf(5) 中加入以下行：`

```sh
if_iwm_load="YES"
iwm3160fw_load="YES"
iwm3168fw_load="YES"
iwm7260fw_load="YES"
iwm7265fw_load="YES"
iwm7265Dfw_load="YES"
iwm8000Cfw_load="YES"
iwm8265fw_load="YES"
iwm9000fw_load="YES"
iwm9260fw_load="YES"
```

## 描述

`iwm` 驱动支持以 `station` 模式运行大多数 Intel Wireless AC 系列网络设备。任何时候只能配置一个虚拟接口。此驱动需要使用 [iwmfw(4)](/man/man4/iwmfw.4.md) 模块构建的固件才能工作。

有关配置此设备的更多信息，请参见 [ifconfig(8)](/man/man8/ifconfig.8.md)。

## 硬件

`iwm` 驱动支持以下 PCIe Wi-Fi 设备：

* Intel Dual Band Wireless AC 3160
* Intel Dual Band Wireless AC 3165
* Intel Dual Band Wireless AC 3168
* Intel Dual Band Wireless AC 7260
* Intel Dual Band Wireless AC 7265
* Intel Dual Band Wireless AC 8260
* Intel Dual Band Wireless AC 8265
* Intel Dual Band Wireless AC 9260
* Intel Dual Band Wireless AC 9270
* Intel Dual Band Wireless AC 946X
* Intel Dual Band Wireless AC 9560

## 实例

加入现有 BSS 网络（即连接到接入点）：

```sh
ifconfig wlan create wlandev iwm0 inet 192.0.2.20/24
```

加入网络名称为 `my_net` 的特定 BSS 网络：

```sh
ifconfig wlan create wlandev iwm0 ssid my_net up
```

加入使用 64 位 WEP 加密的特定 BSS 网络：

```sh
ifconfig wlan create wlandev iwm0 ssid my_net e
    wepmode on wepkey 0x1234567890 weptxkey 1 up
```

加入使用 128 位 WEP 加密的特定 BSS 网络：

```sh
ifconfig wlan create wlandev iwm0 wlanmode adhoc ssid my_net e
    wepmode on wepkey 0x01020304050607080910111213 weptxkey 1
```

## 诊断

* iwm%d: device timeout 驱动将重置硬件。这不应发生。
* iwm%d: firmware error 板载微控制器因某种原因崩溃。驱动将重置硬件。这不应发生。
* iwm%d: timeout waiting for firmware initialization to complete 板载微控制器未能及时初始化。这不应发生。
* iwm%d: could not load firmware image '%s' 驱动无法使用 [firmware(9)](https://github.com/FreeBSD-Ask/freebsd-man-sc/blob/main/man9/firmware.9.md) 子系统加载固件映像。请验证 [iwmfw(4)](/man/man4/iwmfw.4.md) 固件模块存在。
* iwm%d: could not load boot firmware 尝试将引导固件映像上传到板载微控制器失败。这不应发生。
* iwm%d: could not load microcode 尝试将微代码映像上传到板载微控制器失败。这不应发生。
* iwm%d: could not load main firmware 尝试将主固件映像上传到板载微控制器失败。这不应发生。

## 参见

[iwlwifi(4)](/man/man4/iwlwifi.4.md), [iwmfw(4)](/man/man4/iwmfw.4.md), [pci(4)](/man/man4/pci.4.md), [wlan(4)](/man/man4/wlan.4.md), [wlan\_ccmp(4)](/man/man4/wlan_ccmp.4.md), [wlan\_tkip(4)](/man/man4/wlan_tkip.4.md), [wlan\_wep(4)](/man/man4/wlan_wep.4.md), [networking(7)](/man/man7/networking.7.md), [ifconfig(8)](/man/man8/ifconfig.8.md), wpa\_supplicant(8)

## 缺陷

目前，`iwm` 仅支持 802.11a/b/g 模式。它不会关联到配置为仅在 802.11n/ac 模式下操作的接入点。


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://book.bsdcn.org/man/man4/iwm.4.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.