<*> kmod-ifb........................... Intermediate Functional Block support
开始时候怎么都编译不了ifb.ko模块
最后通过Kconfig发现
config IFB
tristate "Intermediate Functional Block support"
depends on NET_CLS_ACT
---help---
This is an intermediate driver that allows sharing of
resources.
To compile this driver as a module, choose M here: the module
will be called ifb. If you want to use more than one ifb
device at a time, you need to compile this driver as a module.
Instead of 'ifb', the devices will then be called 'ifb0',
'ifb1' etc.
Look at the iproute2 documentation directory for usage etc其实它是依赖这个模块的，内核是你没有选中的
#CONFIG_NET_CLS_ACT is not set
make menuconfig
<*> kmod-sched-connmark................ Traffic shaper conntrack mark support
-*- kmod-sched-core....................................... Traffic schedulers查看内核.config文件， CONFIG_NET_CLS_ACT=y
make V=99
最后会发现内核里出现了ifb.ko
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