| Message ID | 20160112142829.GA5879@gmail.com |
|---|---|
| State | Accepted |
| Delegated to: | Pablo Neira |
| Headers | show |
On Tue, Jan 12, 2016 at 07:58:29PM +0530, Shivani Bhardwaj wrote: > Add translation for hop limit to nftables. > > Examples: > > $ sudo ip6tables-translate -t nat -A postrouting -m hl --hl-gt 3 > nft add rule ip6 nat postrouting ip6 hoplimit gt 3 counter > > $ sudo ip6tables-translate -t nat -A postrouting -m hl ! --hl-eq 3 > nft add rule ip6 nat postrouting ip6 hoplimit != 3 counter Applied, thanks. -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/extensions/libip6t_hl.c b/extensions/libip6t_hl.c index 3559db4..226b69c 100644 --- a/extensions/libip6t_hl.c +++ b/extensions/libip6t_hl.c @@ -83,6 +83,23 @@ static void hl_save(const void *ip, const struct xt_entry_match *match) printf(" %s %u", op[info->mode], info->hop_limit); } +static int hl_xlate(const struct xt_entry_match *match, + struct xt_buf *buf, int numeric) +{ + static const char *const op[] = { + [IP6T_HL_EQ] = "", + [IP6T_HL_NE] = "!= ", + [IP6T_HL_LT] = "lt ", + [IP6T_HL_GT] = "gt " }; + + const struct ip6t_hl_info *info = + (struct ip6t_hl_info *) match->data; + + xt_buf_add(buf, "ip6 hoplimit %s%u ", op[info->mode], info->hop_limit); + + return 1; +} + #define s struct ip6t_hl_info static const struct xt_option_entry hl_opts[] = { {.name = "hl-lt", .id = O_HL_LT, .excl = F_ANY, .type = XTTYPE_UINT8, @@ -109,6 +126,7 @@ static struct xtables_match hl_mt6_reg = { .x6_parse = hl_parse, .x6_fcheck = hl_check, .x6_options = hl_opts, + .xlate = hl_xlate, };
Add translation for hop limit to nftables. Examples: $ sudo ip6tables-translate -t nat -A postrouting -m hl --hl-gt 3 nft add rule ip6 nat postrouting ip6 hoplimit gt 3 counter $ sudo ip6tables-translate -t nat -A postrouting -m hl ! --hl-eq 3 nft add rule ip6 nat postrouting ip6 hoplimit != 3 counter Signed-off-by: Shivani Bhardwaj <shivanib134@gmail.com> --- Changes in v2: Alter the contents of array op extensions/libip6t_hl.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)