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FS#3745 - Wireless 'isolate' option not working in brcmfmac driver #8767

openwrt-bot opened this issue Apr 19, 2021 · 0 comments

FS#3745 - Wireless 'isolate' option not working in brcmfmac driver #8767

openwrt-bot opened this issue Apr 19, 2021 · 0 comments
flyspray release/21.02


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@openwrt-bot openwrt-bot commented Apr 19, 2021


Device: BCM4356 WiFi chip + brcmfmac
OpenWRT Version: 21.02 (commit 50f2f25 [4 days ago])

I experienced the problem using OpenWrt 21.02 on a device using the brcmfmac driver for the BCM4356 chip.

I've only been able to test this on an InvizBox 2 (not supported by OpenWRT) but I suspect it to also be a problem for other devices using brcmfmac.

Steps to reproduce:

On a device running OpenWRT 21.02 and with a WiFi chip using the brcmfmac driver:

Set wireless..isolate='1' on the WiFi interface that uses the brcmfmac driver.

Devices connected to the WiFi interface should be isolated from each other, but are not.

Notes / Potential fixes:

I was able to fix this issue by building with a specific patch for brcmfmac from the latest Cypress Linux WiFi Driver Release (FMAC)( The particular patch that fixed the issue can be found in the .zip file linked in the latest Cypress driver release. > cypress-patch-v5.4.18-2021_0114.tar.gz > cypress-patch > 0004-brcmfmac-support-AP-isolation.patch.

The patch has not been accepted into linux-wireless yet. But there are details about it here:

Let me know if you need any more information or there's anything I can do to help sort this out. Thanks.

@aparcar aparcar added the release/21.02 label Feb 22, 2022
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