From e3ec9362f0edad08834cb8ba66bc45fdb0bf33f5 Mon Sep 17 00:00:00 2001 From: Liping Zhang Date: Sun, 25 Dec 2016 20:12:55 +0800 Subject: ct: add average bytes per packet counter support Similar to connbytes extension in iptables, now you can use it to match average bytes per packet a connection has transferred so far. For example, match avgpkt in "BOTH" diretion: # nft add rule x y ct avgpkt \> 100 Match avgpkt in reply direction: # nft add rule x y ct reply avgpkt \< 900 Or match avgpkt in original direction: # nft add rule x y ct original avgpkt \> 200 Signed-off-by: Liping Zhang Signed-off-by: Pablo Neira Ayuso --- src/ct.c | 2 ++ src/parser_bison.y | 2 ++ src/scanner.l | 1 + 3 files changed, 5 insertions(+) (limited to 'src') diff --git a/src/ct.c b/src/ct.c index d0792890..31c7a4b1 100644 --- a/src/ct.c +++ b/src/ct.c @@ -232,6 +232,8 @@ static const struct ct_template ct_templates[] = { BYTEORDER_HOST_ENDIAN, 64), [NFT_CT_PKTS] = CT_TEMPLATE("packets", &integer_type, BYTEORDER_HOST_ENDIAN, 64), + [NFT_CT_AVGPKT] = CT_TEMPLATE("avgpkt", &integer_type, + BYTEORDER_HOST_ENDIAN, 64), }; static void ct_expr_print(const struct expr *expr) diff --git a/src/parser_bison.y b/src/parser_bison.y index be662e4d..4749c9fa 100644 --- a/src/parser_bison.y +++ b/src/parser_bison.y @@ -362,6 +362,7 @@ static void location_update(struct location *loc, struct location *rhs, int n) %token NAME "name" %token PACKETS "packets" %token BYTES "bytes" +%token AVGPKT "avgpkt" %token COUNTERS "counters" %token QUOTAS "quotas" @@ -2945,6 +2946,7 @@ ct_key_dir : SADDR { $$ = NFT_CT_SRC; } ct_key_counters : BYTES { $$ = NFT_CT_BYTES; } | PACKETS { $$ = NFT_CT_PKTS; } + | AVGPKT { $$ = NFT_CT_AVGPKT; } ; ct_stmt : CT ct_key SET expr diff --git a/src/scanner.l b/src/scanner.l index 6b441b54..d0d25ea9 100644 --- a/src/scanner.l +++ b/src/scanner.l @@ -294,6 +294,7 @@ addrstring ({macaddr}|{ip4addr}|{ip6addr}) "name" { return NAME; } "packets" { return PACKETS; } "bytes" { return BYTES; } +"avgpkt" { return AVGPKT; } "counters" { return COUNTERS; } "quotas" { return QUOTAS; } -- cgit v1.2.3