From: Florian Westphal <fw@strlen.de>
To: <netfilter-devel@vger.kernel.org>
Cc: Florian Westphal <fw@strlen.de>
Subject: [PATCH nftables 5/8] src: add "typeof" keyword
Date: Fri, 16 Aug 2019 16:42:38 +0200 [thread overview]
Message-ID: <20190816144241.11469-6-fw@strlen.de> (raw)
In-Reply-To: <20190816144241.11469-1-fw@strlen.de>
This allows users to specify named sets by using the expression
directly, rather than having to lookup the data type to use, or
the needed size via 'nft describe".
Example:
table filter {
set allowed_dports {
type typeof(tcp dport);
}
map nametomark {
type typeof(osf name) : typeof(meta mark);
}
map port2helper {
type ipv4_addr . inet_service : typeof(ct helper);
}
}
Currently, listing such a table will lose the typeof() expression:
nft will print the datatype instead, just as if "type inet_service"
would have been used.
For types with non-fixed widths, the new "type, width" format
added in previous patch is used.
Signed-off-by: Florian Westphal <fw@strlen.de>
---
src/parser_bison.y | 5 +++++
src/scanner.l | 1 +
2 files changed, 6 insertions(+)
diff --git a/src/parser_bison.y b/src/parser_bison.y
index ee169fbac194..876050ba6863 100644
--- a/src/parser_bison.y
+++ b/src/parser_bison.y
@@ -192,6 +192,7 @@ int nft_lex(void *, void *, void *);
%token DEFINE "define"
%token REDEFINE "redefine"
%token UNDEFINE "undefine"
+%token TYPEOF "typeof"
%token FIB "fib"
@@ -1844,6 +1845,10 @@ data_type_atom_expr : type_identifier
$3, NULL);
xfree($1);
}
+ | TYPEOF '(' primary_expr ')'
+ {
+ $$ = $3;
+ }
;
data_type_expr : data_type_atom_expr
diff --git a/src/scanner.l b/src/scanner.l
index c1adcbddbd73..cd563aa0ca1f 100644
--- a/src/scanner.l
+++ b/src/scanner.l
@@ -243,6 +243,7 @@ addrstring ({macaddr}|{ip4addr}|{ip6addr})
"define" { return DEFINE; }
"redefine" { return REDEFINE; }
"undefine" { return UNDEFINE; }
+"typeof" { return TYPEOF; }
"describe" { return DESCRIBE; }
--
2.21.0
next prev parent reply other threads:[~2019-08-16 14:45 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-16 14:42 [PATCH nftables 0/8] add typeof keyword Florian Westphal
2019-08-16 14:42 ` [PATCH nftables 1/8] src: libnftnl: run single-initcalls only once Florian Westphal
2019-08-16 14:42 ` [PATCH nftables 2/8] src: libnftnl: split nft_ctx_new/free Florian Westphal
2019-08-16 14:42 ` [PATCH nftables 3/8] src: store expr, not dtype to track data in sets Florian Westphal
2019-08-16 14:42 ` [PATCH nftables 4/8] src: parser: add syntax to provide bitsize for non-spcific types Florian Westphal
2019-08-16 14:42 ` Florian Westphal [this message]
2019-08-16 14:42 ` [PATCH nftables 6/8] src: add "typeof" print support Florian Westphal
2019-08-16 14:42 ` [PATCH nftables 7/8] src: netlink: remove assertion Florian Westphal
2019-08-16 14:42 ` [PATCH nftables 8/8] tests: add typeof test cases Florian Westphal
2019-08-17 10:23 ` [PATCH nftables 0/8] add typeof keyword Pablo Neira Ayuso
2019-08-17 10:33 ` Pablo Neira Ayuso
2019-08-17 19:26 ` Florian Westphal
2019-08-17 20:55 ` Florian Westphal
2019-08-18 14:33 ` Arturo Borrero Gonzalez
2019-08-26 9:49 ` Pablo Neira Ayuso
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