How to get the size of ip_sf_socklist

Asked Jul 18 '12 at 13:37

Active Jul 18 '12 at 13:42

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In my code I'm trying to get the size of ip_sf_socklist. The only problem is, that this structure is defined (in igmp.h) after:

#ifdef __KERNEL__

So in userspace, I can't see that structure. I could include the header in form /usr/src/linux-headers-x.x.xx but that wouldn't be elegant and could cause trouble if I move to a higher kernel. If I forget to change the header included in such case, that would cause some discrepancy.

Is there an easier way to get the sizeof that structure, something diffirent than having a symbolic link pointing to the latest header (which would be updated in makefile)?

asked Jul 18 '12 at 13:37

Melon

If this structure is used only internally inside the kernel, how can you access it from userspace in the first place? – Some programmer dude Jul 18 '12 at 13:41
I don't use it. I need it's size to calculate a proper value for /proc/sys/net/core/optmem_max – Melon Jul 18 '12 at 13:43

How to get the size of ip_sf_socklist

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