From c330152b7f7779f15dba3e0862bf5616e7cb3eab Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Sat, 4 Jul 2020 02:43:44 +0200 Subject: src: support for implicit chain bindings This patch allows you to group rules in a subchain, e.g. table inet x { chain y { type filter hook input priority 0; tcp dport 22 jump { ip saddr { 127.0.0.0/8, 172.23.0.0/16, 192.168.13.0/24 } accept ip6 saddr ::1/128 accept; } } } This also supports for the `goto' chain verdict. This patch adds a new chain binding list to avoid a chain list lookup from the delinearize path for the usual chains. This can be simplified later on with a single hashtable per table for all chains. From the shell, you have to use the explicit separator ';', in bash you have to escape this: # nft add rule inet x y tcp dport 80 jump { ip saddr 127.0.0.1 accept\; ip6 saddr ::1 accept \; } Signed-off-by: Pablo Neira Ayuso --- include/statement.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/statement.h') diff --git a/include/statement.h b/include/statement.h index 061bc619..f2fc6ade 100644 --- a/include/statement.h +++ b/include/statement.h @@ -11,6 +11,14 @@ extern struct stmt *expr_stmt_alloc(const struct location *loc, extern struct stmt *verdict_stmt_alloc(const struct location *loc, struct expr *expr); +struct chain_stmt { + struct chain *chain; + struct expr *expr; +}; + +struct stmt *chain_stmt_alloc(const struct location *loc, struct chain *chain, + enum nft_verdicts verdict); + struct flow_stmt { const char *table_name; }; @@ -287,6 +295,7 @@ extern struct stmt *xt_stmt_alloc(const struct location *loc); * @STMT_CONNLIMIT: connection limit statement * @STMT_MAP: map statement * @STMT_SYNPROXY: synproxy statement + * @STMT_CHAIN: chain statement */ enum stmt_types { STMT_INVALID, @@ -315,6 +324,7 @@ enum stmt_types { STMT_CONNLIMIT, STMT_MAP, STMT_SYNPROXY, + STMT_CHAIN, }; /** @@ -380,6 +390,7 @@ struct stmt { struct flow_stmt flow; struct map_stmt map; struct synproxy_stmt synproxy; + struct chain_stmt chain; }; }; -- cgit v1.2.3