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* Drop pointless local variable in snprintf callbacksPhil Sutter2021-03-151-2/+2
| | | | | | | | | | A common idiom among snprintf callbacks was to copy the unsigned parameter 'size' (or 'len') into a signed variable for further use. Though since snprintf() itself casts it to unsigned and SNPRINTF_BUFFER_SIZE() does not allow it to become negative, this is not needed. Drop the local variable and rename the parameter accordingly. Signed-off-by: Phil Sutter <phil@nwl.cc>
* expr: Check output type once and for allPhil Sutter2021-03-151-16/+2
| | | | | | | | | | | There is but a single supported output type left, so check it in expr.c and drop all the single option switch statements in individual expressions. Since the parameter is now unused (and to ensure code correctness), drop 'type' parameter from struct expr_ops' snprintf callback. Signed-off-by: Phil Sutter <phil@nwl.cc>
* src: remove nftnl_rule_cmp() and nftnl_expr_cmp()Pablo Neira Ayuso2018-10-241-14/+0
| | | | | | | | | | | | | | These functions are not very useful, rule comparison from this layer does not work well with implicit set definitions. This infrastructure was added as an attempt to support for deletion by name from this layer, which should be done from higher level libnftables library. Finally, we never had a client for this code in git.netfilter.org. Let's remove it and bump libversion for safety reasons. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: remove json supportPablo Neira Ayuso2018-10-151-32/+0
| | | | | | We have better json support in libnftables these days. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: add flow offload expressionPablo Neira Ayuso2018-03-051-0/+184
This patch adds the new "flow_offload" expression to select what flows are offloaded to an existing flowtable. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>