Openwrt Kernel 4.9.184 // Cross-compiling & Backports project (Help)

[MrX0r]

Hello I have the following problem, the driver does not work under kernel 4.9.184 on Openwrt

What I have done

export STAGING_DIR=/home/src/openwrt
export LD_LIBRARY_PATH=$TOOLCHAIN_DIR/usr/lib/
export LDCFLAGS=$TOOLCHAIN_DIR/usr/lib/
export PATH=$STAGING_DIR/bin:$PATH
export TOOLCHAIN_DIR=$STAGING_DIR/toolchain-mips_24kc_gcc-7.3.0_musl/

export ARCH=mips
export CROSS_COMPILE=$STAGING_DIR/staging_dir/toolchain-mips_24kc_gcc-7.4.0_musl/bin/mips-openwrt-linux-
make KSRC=/home/src/openwrt/build_dir/target-mips_24kc_musl/linux-ar71xx_generic/linux-4.9.184/

How can I load the cfg80211 module into the driver, where do I have to edit the kernel source, which file? he created the driver with cfg80211!

Openwrt uses backport wireless driver package instead of the in kernel one, and use it to build the entire mac80211 subsystem and its related drivers.

#254 (comment)

OpenWRT is using drivers from "backports project". For this reason the cfg80211 module was compiled with a header file that has a slightly different wiphy structure from the standard kernel headers. To resolve this you need to apply a patch from the backports project to the kernel headers (in the OpenWRT-SDK) before compiling the driver:

https://git.kernel.org/pub/scm/linux/kernel/git/backports/backports.git/tree/patches/0003-cfg80211-wext-padding/include_net_cfg80211.patch