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authorPablo Neira Ayuso <pablo@netfilter.org>2018-08-24 09:52:22 +0200
committerPablo Neira Ayuso <pablo@netfilter.org>2018-08-24 09:52:22 +0200
commita55ca1a24b7b216144dc737f621fb68f4a924e38 (patch)
treee104f4c5d5ad34b39f58a3b05b80aba85858d0c0 /src/cli.c
parent0e90798e98121abab274434ec60f0b873f510021 (diff)
src: integrate stateful expressions into sets and maps
The following example shows how to populate a set from the packet path using the destination IP address, for each entry there is a counter. The entry expires after the 1 hour timeout if no packets matching this entry are seen. table ip x { set xyz { type ipv4_addr size 65535 flags dynamic,timeout timeout 1h } chain y { type filter hook output priority filter; policy accept; update @xyz { ip daddr counter } counter } } Similar example, that creates a mapping better IP address and mark, where the mark is assigned using an incremental sequence generator from 0 to 1 inclusive. table ip x { map xyz { type ipv4_addr : mark size 65535 flags dynamic,timeout timeout 1h } chain y { type filter hook input priority filter; policy accept; update @xyz { ip saddr counter : numgen inc mod 2 } } } Supported stateful statements are: limit, quota, counter and connlimit. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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