Re: implementation of SIOCGIFFCOUNT

Mon, 08 Oct 2001 19:33:40 +0530

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Pass '0' as the size argument and u will get the total size (sizeof struct * number of interfaces)
back. The only thing is u have to make two calls, which u would do anyway.


Sebastian Heidl wrote:

>is there a specific reason for SIOCGIFCOUNT not being implemented
>in the kernel ? All occurences lead to net/core/dev.c dev_ioctl(...)
>which just returns -EINVAL for this command. So one has to guess
>the number of struct ifreq structures to pass to a SIOCGIFCONF
>enlighten me, please ;-)

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