diff options
| author | Shivani Bhardwaj <shivanib134@gmail.com> | 2016-01-12 19:58:29 +0530 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-02-16 19:30:24 +0100 |
| commit | 0198008d1de13037c2e809c598d51771b166cc46 (patch) | |
| tree | 6d2309ae98552fb2bdeac404d18585f20708c831 /extensions | |
| parent | a9c97e3671976ef358a9880535418e18720958c4 (diff) | |
extensions: libip6t_hl: Add translation to nft
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>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'extensions')
| -rw-r--r-- | extensions/libip6t_hl.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/extensions/libip6t_hl.c b/extensions/libip6t_hl.c index 3559db46..226b69c3 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, }; |