On Thu, Jan 07, 2016 at 03:09:24PM +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
>
> Signed-off-by: Shivani Bhardwaj <shivanib134@xxxxxxxxx>
> ---
> extensions/libip6t_hl.c | 18 ++++++++++++++++++
> 1 file changed, 18 insertions(+)
>
> diff --git a/extensions/libip6t_hl.c b/extensions/libip6t_hl.c
> index 3559db4..0e13df1 100644
> --- a/extensions/libip6t_hl.c
> +++ b/extensions/libip6t_hl.c
> @@ -97,6 +97,23 @@ static const struct xt_option_entry hl_opts[] = {
> };
> #undef s
>
> +static int hl_xlate(const struct xt_entry_match *match,
> + struct xt_buf *buf, int numeric)
> +{
> + static const char *const op[] = {
> + [IP6T_HL_EQ] = "ip6 hoplimit",
> + [IP6T_HL_NE] = "ip6 hoplimit !=",
> + [IP6T_HL_LT] = "ip6 hoplimit lt",
> + [IP6T_HL_GT] = "ip6 hoplimit gt" };
I'd suggest you use something like:
static const char *const op[] = {
[IP6T_HL_EQ] = "",
[IP6T_HL_NE] = "!=",
[IP6T_HL_LT] = "lt",
[IP6T_HL_GT] = "gt"
};
We can later on consolidate this code by providing a common function
from libxtables for everyone.
Thanks.
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