From: Liping Zhang <[email protected]> For example: # iptables-translate -A OUTPUT -m connbytes --connbytes 200 \ --connbytes-dir original --connbytes-mode packets nft add rule ip filter OUTPUT ct original packets ge 200 counter
# iptables-translate -A OUTPUT -m connbytes ! --connbytes 200 \ --connbytes-dir reply --connbytes-mode packets nft add rule ip filter OUTPUT ct reply packets lt 200 counter # iptables-translate -A OUTPUT -m connbytes --connbytes 200:600 \ --connbytes-dir both --connbytes-mode bytes nft add rule ip filter OUTPUT ct bytes 200-600 counter # iptables-translate -A OUTPUT -m connbytes ! --connbytes 200:600 \ --connbytes-dir both --connbytes-mode bytes nft add rule ip filter OUTPUT ct bytes != 200-600 counter # iptables-translate -A OUTPUT -m connbytes --connbytes 200:200 \ --connbytes-dir both --connbytes-mode avgpkt nft add rule ip filter OUTPUT ct avgpkt 200 counter Signed-off-by: Liping Zhang <[email protected]> --- extensions/libxt_connbytes.c | 56 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) diff --git a/extensions/libxt_connbytes.c b/extensions/libxt_connbytes.c index ed2ad25..b57f0fc 100644 --- a/extensions/libxt_connbytes.c +++ b/extensions/libxt_connbytes.c @@ -156,6 +156,61 @@ static void connbytes_save(const void *ip, const struct xt_entry_match *match) print_direction(sinfo); } + +static int connbytes_xlate(struct xt_xlate *xl, + const struct xt_xlate_mt_params *params) +{ + const struct xt_connbytes_info *info = (void *)params->match->data; + unsigned long long from, to; + bool invert = false; + + xt_xlate_add(xl, "ct "); + + switch (info->direction) { + case XT_CONNBYTES_DIR_ORIGINAL: + xt_xlate_add(xl, "original "); + break; + case XT_CONNBYTES_DIR_REPLY: + xt_xlate_add(xl, "reply "); + break; + case XT_CONNBYTES_DIR_BOTH: + break; + default: + return 0; + } + + switch (info->what) { + case XT_CONNBYTES_PKTS: + xt_xlate_add(xl, "packets "); + break; + case XT_CONNBYTES_BYTES: + xt_xlate_add(xl, "bytes "); + break; + case XT_CONNBYTES_AVGPKT: + xt_xlate_add(xl, "avgpkt "); + break; + default: + return 0; + } + + if (info->count.from > info->count.to) { + invert = true; + from = info->count.to; + to = info->count.from; + } else { + to = info->count.to; + from = info->count.from; + } + + if (from == to) + xt_xlate_add(xl, "%llu", from); + else if (to == UINT64_MAX) + xt_xlate_add(xl, "%s %llu", invert ? "lt" : "ge", from); + else + xt_xlate_add(xl, "%s%llu-%llu", invert ? "!= " : "", from, to); + return 1; +} + static struct xtables_match connbytes_match = { .family = NFPROTO_UNSPEC, .name = "connbytes", @@ -167,6 +222,7 @@ static struct xtables_match connbytes_match = { .save = connbytes_save, .x6_parse = connbytes_parse, .x6_options = connbytes_opts, + .xlate = connbytes_xlate, }; void _init(void) -- 2.5.5 -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
