netfilter: add missing IS_ENABLED(CONFIG_NETFILTER) checks to some header-files.

linux/netfilter.h defines a number of struct and inline function
definitions which are only available is CONFIG_NETFILTER is enabled.
These structs and functions are used in declarations and definitions in
other header-files.  Added preprocessor checks to make sure these
headers will compile if CONFIG_NETFILTER is disabled.

Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Jeremy Sowden 2019-08-07 15:17:03 +01:00 • committed by Pablo Neira Ayuso
commit 78458e3e08
15 changed files with 52 additions and 0 deletions