path: root/src/exthdr.c
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* src: add specific byteorder to the struct proto_hdr_templateAlvaro Neira Ayuso2014-09-171-1/+5
| | | | | | | | | | | | | | | | | | | | | If we try to add a rule like: nft add rule filter input udp length {55-9999} nftable shows: BUG: invalid byte order conversion 0 => 2 nft: src/evaluate.c:153: byteorder_conversion_op: Assertion `0' failed. Some of the existing payload fields rely on BYTEORDER_INVALID. Therefore, if we try to convert it in evaluation step, we hit this bug. This patch allows to add a specific byteorder to the struct proto_hdr_template. If we create a expression with a invalid byteorder, we will use the byteorder added to the proto_hdr_template structure. Signed-off-by: Alvaro Neira Ayuso <> Signed-off-by: Patrick McHardy <>
* expr: add comparison function for singleton expressionsPatrick McHardy2014-03-071-0/+7
| | | | Singed-off-by: Patrick McHardy <>
* nftables: generic procotol contextsPatrick McHardy2014-01-081-13/+13
| | | | | | | | | | | | | | | 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 <>
* datatype: add/move size and byte order information into data typesPatrick McHardy2009-03-311-2/+2
| | | | | | | | | | Add size and type information to non-basetype types and remove the now redundant information from the symbol tables. This will be used to determine size and byteorder of set members without analyzing the ruleset for incremental update operations. Signed-off-by: Patrick McHardy <>
* datatype: maintain table of all datatypes and add registration/lookup functionPatrick McHardy2009-03-311-1/+7
| | | | | | | | | | | Add a table containing all available datatypes and registration/lookup functions. This will be used to associate a stand-alone set in the kernel with the correct type without parsing the entire ruleset. Additionally it would now be possible to remove the global declarations for the core types. Not done yet though. Signed-off-by: Patrick McHardy <>
* expr: add support for cloning expressionsPatrick McHardy2009-03-201-0/+7
| | | | Signed-off-by: Patrick McHardy <>
* Initial commitv0.01-alpha1Patrick McHardy2009-03-181-0/+238