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path: root/net/ipv4/netfilter/ipt_NETMAP.c (follow)
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2011-12-23netfilter: nf_nat: export NAT definitions to userspacePatrick McHardy1-7/+7
Export the NAT definitions to userspace. So far userspace (specifically, iptables) has been copying the headers files from include/net. Also rename some structures and definitions in preparation for IPv6 NAT. Since these have never been officially exported, this doesn't affect existing userspace code. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-06-17netfilter: nf_nat: support user-specified SNAT rules in LOCAL_INPatrick McHardy1-2/+4
2.6.34 introduced 'conntrack zones' to deal with cases where packets from multiple identical networks are handled by conntrack/NAT. Packets are looped through veth devices, during which they are NATed to private addresses, after which they can continue normally through the stack and possibly have NAT rules applied a second time. This works well, but is needlessly complicated for cases where only a single SNAT/DNAT mapping needs to be applied to these packets. In that case, all that needs to be done is to assign each network to a seperate zone and perform NAT as usual. However this doesn't work for packets destined for the machine performing NAT itself since its corrently not possible to configure SNAT mappings for the LOCAL_IN chain. This patch adds a new INPUT chain to the NAT table and changes the targets performing SNAT to be usable in that chain. Example usage with two identical networks (192.168.0.0/24) on eth0/eth1: iptables -t raw -A PREROUTING -i eth0 -j CT --zone 1 iptables -t raw -A PREROUTING -i eth0 -j MARK --set-mark 1 iptables -t raw -A PREROUTING -i eth1 -j CT --zone 2 iptabels -t raw -A PREROUTING -i eth1 -j MARK --set-mark 2 iptables -t nat -A INPUT -m mark --mark 1 -j NETMAP --to 10.0.0.0/24 iptables -t nat -A POSTROUTING -m mark --mark 1 -j NETMAP --to 10.0.0.0/24 iptables -t nat -A INPUT -m mark --mark 2 -j NETMAP --to 10.0.1.0/24 iptables -t nat -A POSTROUTING -m mark --mark 2 -j NETMAP --to 10.0.1.0/24 iptables -t raw -A PREROUTING -d 10.0.0.0/24 -j CT --zone 1 iptables -t raw -A OUTPUT -d 10.0.0.0/24 -j CT --zone 1 iptables -t raw -A PREROUTING -d 10.0.1.0/24 -j CT --zone 2 iptables -t raw -A OUTPUT -d 10.0.1.0/24 -j CT --zone 2 iptables -t nat -A PREROUTING -d 10.0.0.0/24 -j NETMAP --to 192.168.0.0/24 iptables -t nat -A OUTPUT -d 10.0.0.0/24 -j NETMAP --to 192.168.0.0/24 iptables -t nat -A PREROUTING -d 10.0.1.0/24 -j NETMAP --to 192.168.0.0/24 iptables -t nat -A OUTPUT -d 10.0.1.0/24 -j NETMAP --to 192.168.0.0/24 Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-05-11netfilter: xtables: substitute temporary defines by final nameJan Engelhardt1-1/+1
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-03-25netfilter: xtables: change targets to return error codeJan Engelhardt1-3/+3
Part of the transition of done by this semantic patch: // <smpl> @ rule1 @ struct xt_target ops; identifier check; @@ ops.checkentry = check; @@ identifier rule1.check; @@ check(...) { <... -return true; +return 0; ...> } @@ identifier rule1.check; @@ check(...) { <... -return false; +return -EINVAL; ...> } // </smpl> Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-03-25netfilter: xtables: change xt_target.checkentry return typeJan Engelhardt1-1/+1
Restore function signatures from bool to int so that we can report memory allocation failures or similar using -ENOMEM rather than always having to pass -EINVAL back. // <smpl> @@ type bool; identifier check, par; @@ -bool check +int check (struct xt_tgchk_param *par) { ... } // </smpl> Minus the change it does to xt_ct_find_proto. Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-03-25netfilter: xt extensions: use pr_<level> (2)Jan Engelhardt1-3/+3
Supplement to 1159683ef48469de71dc26f0ee1a9c30d131cf89. Downgrade the log level to INFO for most checkentry messages as they are, IMO, just an extra information to the -EINVAL code that is returned as part of a parameter "constraint violation". Leave errors to real errors, such as being unable to create a LED trigger. Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2008-10-08netfilter: xtables: move extension arguments into compound structure (5/6)Jan Engelhardt1-5/+2
This patch does this for target extensions' checkentry functions. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: xtables: move extension arguments into compound structure (4/6)Jan Engelhardt1-9/+8
This patch does this for target extensions' target functions. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: x_tables: use NFPROTO_* in extensionsJan Engelhardt1-1/+1
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-01-28[NETFILTER]: Update modules' descriptionsJan Engelhardt1-1/+1
Updates the MODULE_DESCRIPTION() tags for all Netfilter modules, actually describing what the module does and not just "netfilter XYZ target". Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28[NETFILTER]: nf_nat: pass manip type instead of hook to nf_nat_setup_infoPatrick McHardy1-1/+1
nf_nat_setup_info gets the hook number and translates that to the manip type to perform. This is a relict from the time when one manip per hook could exist, the exact hook number doesn't matter anymore, its converted to the manip type. Most callers already know what kind of NAT they want to perform, so pass the maniptype in directly. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28[NETFILTER]: x_tables: consistent and unique symbol namesJan Engelhardt1-20/+15
Give all Netfilter modules consistent and unique symbol names. Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28[NETFILTER]: Introduce NF_INET_ hook valuesPatrick McHardy1-6/+7
The IPv4 and IPv6 hook values are identical, yet some code tries to figure out the "correct" value by looking at the address family. Introduce NF_INET_* values for both IPv4 and IPv6. The old values are kept in a #ifndef __KERNEL__ section for userspace compatibility. Signed-off-by: Patrick McHardy <kaber@trash.net> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-15[NETFILTER]: Replace sk_buff ** with sk_buff *Herbert Xu1-4/+4
With all the users of the double pointers removed, this patch mops up by finally replacing all occurances of sk_buff ** in the netfilter API by sk_buff *. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-10[NETFILTER]: Convert DEBUGP to pr_debugPatrick McHardy1-10/+3
Convert DEBUGP to pr_debug and fix lots of non-compiling debug statements. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-10[NETFILTER]: x_tables: mark matches and targets __read_mostlyPatrick McHardy1-1/+1
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-10[NETFILTER]: x_tables: switch xt_target->checkentry to boolJan Engelhardt1-4/+4
Switch the return type of target checkentry functions to boolean. Signed-off-by: Jan Engelhardt <jengelh@gmx.de> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25[NETFILTER]: Remove IPv4 only connection tracking/NATPatrick McHardy1-13/+9
Remove the obsolete IPv4 only connection tracking/NAT as scheduled in feature-removal-schedule. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25[SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iphArnaldo Carvalho de Melo1-2/+2
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-10[NET] IPV4: Fix whitespace errors.YOSHIFUJI Hideaki1-2/+2
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-08[NETFILTER]: {ip,ip6}_tables: remove x_tables wrapper functionsJan Engelhardt1-3/+5
Use the x_tables functions directly to make it better visible which parts are shared between ip_tables and ip6_tables. Signed-off-by: Jan Engelhardt <jengelh@gmx.de> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[NETFILTER]: Add NAT support for nf_conntrackJozsef Kadlecsik1-0/+4
Add NAT support for nf_conntrack. Joint work of Jozsef Kadlecsik, Yasuyuki Kozakai, Martin Josefsson and myself. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-09-28[NETFILTER]: ipt annotationsAl Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-09-22[NETFILTER]: x_tables: remove unused size argument to check/destroy functionsPatrick McHardy1-1/+0
The size is verified by x_tables and isn't needed by the modules anymore. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-09-22[NETFILTER]: x_tables: remove unused argument to target functionsPatrick McHardy1-2/+1
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-30Remove obsolete #include <linux/config.h>Jörn Engel1-1/+0
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-03-28[NETFILTER]: Rename init functions.Andrew Morton1-4/+4
Every netfilter module uses `init' for its module_init() function and `fini' or `cleanup' for its module_exit() function. Problem is, this creates uninformative initcall_debug output and makes ctags rather useless. So go through and rename them all to $(filename)_init and $(filename)_fini. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[NETFILTER]: x_tables: add xt_{match,target} arguments to match/target functionsPatrick McHardy1-0/+2
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[NETFILTER]: Convert ip_tables matches/targets to centralized error checkingPatrick McHardy1-13/+4
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tablesHarald Welte1-1/+1
This monster-patch tries to do the best job for unifying the data structures and backend interfaces for the three evil clones ip_tables, ip6_tables and arp_tables. In an ideal world we would never have allowed this kind of copy+paste programming... but well, our world isn't (yet?) ideal. o introduce a new x_tables module o {ip,arp,ip6}_tables depend on this x_tables module o registration functions for tables, matches and targets are only wrappers around x_tables provided functions o all matches/targets that are used from ip_tables and ip6_tables are now implemented as xt_FOOBAR.c files and provide module aliases to ipt_FOOBAR and ip6t_FOOBAR o header files for xt_matches are in include/linux/netfilter/, include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers around the xt_FOOBAR.h headers Based on this patchset we're going to further unify the code, gradually getting rid of all the layer 3 specific assumptions. Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[NETFILTER]: Make NETMAP target usable in OUTPUTGary Wayne Smith1-3/+5
Signed-off-by: Gary Wayne Smith <gary.w.smith@primeexalia.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-04-16Linux-2.6.12-rc2Linus Torvalds1-0/+117
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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