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* libnftables: Make some arrays globally accessiblePhil Sutter2018-05-111-0/+4
| | | | | | | | | | | | | | | This removes static flag and adds declarations in headers for the following arrays: * ct_templates from src/ct.c * mark_tbl from src/datatype.c * meta_templates and devgroup_tbl from src/meta.c * table_flags_name from src/rule.c * set_stmt_op_names from src/statement.c * tcpopthdr_protocols from src/tcpopt.c Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* meta: introduce datatype ifname_typeArturo Borrero Gonzalez2018-02-251-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | This new datatype is a string subtype. It will allow us to build named maps/sets using meta keys like 'iifname', 'oifname', 'ibriport' or 'obriport'. Example: table inet t { set s { type ifname elements = { "eth0", "eth1" } } chain c { iifname @s accept oifname @s accept } } Signed-off-by: Arturo Borrero Gonzalez <arturo@netfilter.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* include: Remove datatype_register().Varsha Rao2017-06-301-2/+7
| | | | | | | | Remove datatype_register() function and its calling __init functions. Add arguments of datatype_register() function to datatype array. Signed-off-by: Varsha Rao <rvarsha016@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* meta: allow resolving meta keys at run timeFlorian Westphal2016-10-271-0/+4
| | | | | | | | | use the meta template to translate the textual token to the enum value. This allows to remove two keywords from the scanner and also means we do not need to introduce new keywords when more meta keys get added. Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: allow filtering on L2 header in inet familyFlorian Westphal2015-11-061-0/+2
| | | | | | | | | | | | | | | | | | Error: conflicting protocols specified: inet vs. ether tcp dport 22 iiftype ether ether saddr 00:0f:54:0c:11:4 ^^^^^^^^^^^ This allows the implicit inet proto dependency to get replaced by an ethernet one. This is possible since by the time we detect the conflict the meta dependency for the network protocol has already been added. So we only need to add another dependency on the Linklayer frame type. Closes: http://bugzilla.netfilter.org/show_bug.cgi?id=981 Acked-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Florian Westphal <fw@strlen.de>
* src: add dup statement supportPablo Neira Ayuso2015-09-301-0/+2
| | | | | | | | | | This allows you to clone packets to destination address, eg. ... dup to 172.20.0.2 ... dup to 172.20.0.2 device eth1 ... dup to ip saddr map { 192.168.0.2 : 172.20.0.2, ... } device eth1 Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: add protocol context update callbackPatrick McHardy2014-01-081-2/+0
| | | | | | | | | | Add a callback function to the expression ops to update the protocol context for relational protocol expressions (EXPR_F_PROTOCOL). Also set the EXPR_F_PROTOCOL flag for IIFTYPE meta expressions to make sure the callback is invoked when necessary. Signed-off-by: Patrick McHardy <kaber@trash.net>
* nftables: generic procotol contextsPatrick McHardy2014-01-081-0/+2
| | | | | | | | | | | | | | | Currently the context of higher layer protocols is specific to payload expressions with some special cases for meta IIFTYPE expressions. This approach has a few shortcomings, concretely there are more expression types which define upper layer protocols like the ct expression and two upcoming new types for the meta expression. Replace the payload context by a generic protocol context to deal with this. This patch just splits off the requires parts from the payload expression without any functional changes, the following patches will add further functionality for other expressions. Signed-off-by: Patrick McHardy <kaber@trash.net>
* Fix use of reserved names in header sandwichPatrick McHardy2009-03-181-3/+3
| | | | Signed-off-by: Patrick McHardy <kaber@trash.net>
* Initial commitv0.01-alpha1Patrick McHardy2009-03-181-0/+29