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* include: add tcpopt.h to Makefile.amPablo Neira Ayuso2017-02-251-0/+1
| | | | | | Add this new header filer otherwise make distcheck breaks. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* include: Missing noinst_HEADERS updatesv0.7Pablo Neira Ayuso2016-12-201-1/+5
| | | | | | From recent updates, otherwise make distcheck breaks. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: add numgen expressionPablo Neira Ayuso2016-08-291-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This new expression allows us to generate incremental and random numbers bound to a specified modulus value. The following rule sets the conntrack mark of 0 to the first packet seen, then 1 to second packet, then 0 again to the third packet and so on: # nft add rule x y ct mark set numgen inc mod 2 A more useful example is a simple load balancing scenario, where you can also use maps to set the destination NAT address based on this new numgen expression: # nft add rule nat prerouting \ dnat to numgen inc mod 2 map { 0 : 192.168.10.100, 1 : 192.168.20.200 } So this is distributing new connections in a round-robin fashion between 192.168.10.100 and 192.168.20.200. Don't forget the special NAT chain semantics: Only the first packet evaluates the rule, follow up packets rely on conntrack to apply the NAT information. You can also emulate flow distribution with different backend weights using intervals: # nft add rule nat prerouting \ dnat to numgen inc mod 10 map { 0-5 : 192.168.10.100, 6-9 : 192.168.20.200 } So 192.168.10.100 gets 60% of the workload, while 192.168.20.200 gets 40%. We can also be mixed with dynamic sets, thus weight can be updated in runtime. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* build: include/mini-gmp.h is not included at "make dist"Magnus Öberg2016-03-171-0/+1
| | | | | | | Added missing dist. file mini-gmp.h in include/Makefile.am Signed-off-by: Magnus Öberg <magnus.oberg@westermo.se> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: restore interface to index cachePablo Neira Ayuso2015-04-111-0/+1
| | | | | | | | | | | | | | | | nftables used to have a cache to speed up interface name <-> index lookup, restore it using libmnl. This reduces netlink traffic since if_nametoindex() and if_indextoname() open, send a request, receive the list of interface and close a netlink socket for each call. I think this is also good for consistency since nft -f will operate with the same index number when reloading the ruleset. The cache is populated by when nft_if_nametoindex() and nft_if_indextoname() are used for first time. Then, it it released in the output path. In the interactive mode, it is invalidated after each command. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* build: autotools conversionPablo Neira Ayuso2014-11-121-0/+22
1) This removes former Makefiles and install-sh (which is now automagically imported via autoreconf). Makefile.defs.in Makefile.in Makefile.rules.in src/Makefile.in install-sh (now automagically imported via autoreconf). 2) CFLAGS are left almost same, they are integrated into Make_global.am. Use AM_CPPFLAGS to set the CFLAGS set by pkgconfig. 3) Add m4 directory to the tree which only contains the .gitignore file. Update .gitignore file to skip autogenerated files. 4) include <config.h> whenever required. 5) Minor adjustments to scanner.l and parser_bison.y to compile cleanly with autotools. 6) Add %option outfile=lex.yy.c to scanner.l, otherwise I hit this error here: gcc -DHAVE_CONFIG_H -I. -I.. -I../include -DDEFAULT_INCLUDE_PATH="\"/usr/etc\"" -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wdeclaration-after-statement -Wsign-compare -Winit-self -Wformat-nonliteral -Wformat-security -Wmissing-format-attribute -Wcast-align -Wundef -Wbad-function-cast -g -O2 -MT mnl.o -MD -MP -MF $depbase.Tpo -c -o mnl.o mnl.c &&\ mv -f $depbase.Tpo $depbase.Po /bin/sh ../build-aux/ylwrap scanner.l lex.yy.c scanner.c -- flex make[3]: *** [scanner.c] Error 1 make[3]: Leaving directory `/home/pablo/devel/scm/git-netfilter/nftables/src' make[2]: *** [all] Error 2 make[2]: Leaving directory `/home/pablo/devel/scm/git-netfilter/nftables/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/pablo/devel/scm/git-netfilter/nftables' make: *** [all] Error 2 7) Add Makefile.am for include/ (contributed by Giorgio Dal Molin). The doc/ and files/ conversion to automake will come in follow up patches but 'make distcheck' already works. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>