Hi to all!
I developed a kernel module which needs linux/tcp.h and a userspace
program that
communicates with it via netlink.
Kernel code uses linux/tcp.h
userspace C code correctly uses linux/tcp.h
A gui written in C++, using linux/tcp.h produces a compilation error:
In file included from ../common/defs/ipfi_structures.h:9,
from ../ipfi/src/includes/ipfire_structs.h:20,
from iqlistener.h:4,
from iqlistener.cpp:1:
/usr/include/linux/tcp.h:72: error: '__u32 __fswab32(__u32)' cannot
appear in a constant-expression
/usr/include/linux/tcp.h:72: error: a function call cannot appear in a
constant-expression
/usr/include/linux/tcp.h:73: error: '__u32 __fswab32(__u32)' cannot
appear in a constant-expression
/usr/include/linux/tcp.h:73: error: a function call cannot appear in a
constant-expression
/usr/include/linux/tcp.h:74: error: '__u32 __fswab32(__u32)' cannot
appear in a constant-expression
/usr/include/linux/tcp.h:74: error: a function call cannot appear in a
constant-expression
/usr/include/linux/tcp.h:75: error: '__u32 __fswab32(__u32)' cannot
appear in a constant-expression
/usr/include/linux/tcp.h:75: error: a function call cannot appear in a
constant-expression
/usr/include/linux/tcp.h:76: error: '__u32 __fswab32(__u32)' cannot
appear in a constant-expression
/usr/include/linux/tcp.h:76: error: a function call cannot appear in a
constant-expression
/usr/include/linux/tcp.h:77: error: '__u32 __fswab32(__u32)' cannot
appear in a constant-expression
/usr/include/linux/tcp.h:77: error: a function call cannot appear in a
constant-expression
/usr/include/linux/tcp.h:78: error: '__u32 __fswab32(__u32)' cannot
appear in a constant-expression
/usr/include/linux/tcp.h:78: error: a function call cannot appear in a
constant-expression
/usr/include/linux/tcp.h:79: error: '__u32 __fswab32(__u32)' cannot
appear in a constant-expression
/usr/include/linux/tcp.h:79: error: a function call cannot appear in a
constant-expression
/usr/include/linux/tcp.h:80: error: '__u32 __fswab32(__u32)' cannot
appear in a constant-expression
/usr/include/linux/tcp.h:80: error: a function call cannot appear in a
constant-expression
/usr/include/linux/tcp.h:81: error: '__u32 __fswab32(__u32)' cannot
appear in a constant-expression
/usr/include/linux/tcp.h:81: error: a function call cannot appear in a
constant-expression
The same code used to compile until a recent update.
Now I am including netinet/tcp.h instead of linux/tcp.h to compile in userspace.
Is there any known issue with linux/tcp.h?
Which is the differece between linux/ and netinet/includes and which
is more correct to use?
Thanks for any hint.
Kernel 2.6.30
gcc version 4.3.3
glibc 2.10.1
sys-kernel/linux-headers 2.6.30
--
Giacomo S.
http://www.giacomos.it
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http://sourceforge.net/projects/ipfire-wall
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http://www.giacomos.it/iqfire/index.html
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