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/* Shared library to add Segment Routing Header (SRH) matching support.
*
* Author:
* Ahmed Abdelsalam <amsalam20@gmail.com>
*/
#include <stdio.h>
#include <xtables.h>
#include <linux/netfilter_ipv6/ip6t_srh.h>
#include <string.h>
/* srh command-line options */
enum {
O_SRH_NEXTHDR,
O_SRH_LEN_EQ,
O_SRH_LEN_GT,
O_SRH_LEN_LT,
O_SRH_SEGS_EQ,
O_SRH_SEGS_GT,
O_SRH_SEGS_LT,
O_SRH_LAST_EQ,
O_SRH_LAST_GT,
O_SRH_LAST_LT,
O_SRH_TAG,
O_SRH_PSID,
O_SRH_NSID,
O_SRH_LSID,
};
static void srh_help(void)
{
printf(
"srh match options:\n"
"[!] --srh-next-hdr next-hdr Next Header value of SRH\n"
"[!] --srh-hdr-len-eq hdr_len Hdr Ext Len value of SRH\n"
"[!] --srh-hdr-len-gt hdr_len Hdr Ext Len value of SRH\n"
"[!] --srh-hdr-len-lt hdr_len Hdr Ext Len value of SRH\n"
"[!] --srh-segs-left-eq segs_left Segments Left value of SRH\n"
"[!] --srh-segs-left-gt segs_left Segments Left value of SRH\n"
"[!] --srh-segs-left-lt segs_left Segments Left value of SRH\n"
"[!] --srh-last-entry-eq last_entry Last Entry value of SRH\n"
"[!] --srh-last-entry-gt last_entry Last Entry value of SRH\n"
"[!] --srh-last-entry-lt last_entry Last Entry value of SRH\n"
"[!] --srh-tag tag Tag value of SRH\n"
"[!] --srh-psid addr[/mask] SRH previous SID\n"
"[!] --srh-nsid addr[/mask] SRH next SID\n"
"[!] --srh-lsid addr[/mask] SRH Last SID\n");
}
#define s struct ip6t_srh
static const struct xt_option_entry srh_opts[] = {
{ .name = "srh-next-hdr", .id = O_SRH_NEXTHDR, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, next_hdr)},
{ .name = "srh-hdr-len-eq", .id = O_SRH_LEN_EQ, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, hdr_len)},
{ .name = "srh-hdr-len-gt", .id = O_SRH_LEN_GT, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, hdr_len)},
{ .name = "srh-hdr-len-lt", .id = O_SRH_LEN_LT, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, hdr_len)},
{ .name = "srh-segs-left-eq", .id = O_SRH_SEGS_EQ, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, segs_left)},
{ .name = "srh-segs-left-gt", .id = O_SRH_SEGS_GT, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, segs_left)},
{ .name = "srh-segs-left-lt", .id = O_SRH_SEGS_LT, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, segs_left)},
{ .name = "srh-last-entry-eq", .id = O_SRH_LAST_EQ, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, last_entry)},
{ .name = "srh-last-entry-gt", .id = O_SRH_LAST_GT, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, last_entry)},
{ .name = "srh-last-entry-lt", .id = O_SRH_LAST_LT, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, last_entry)},
{ .name = "srh-tag", .id = O_SRH_TAG, .type = XTTYPE_UINT16,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, tag)},
{ }
};
#undef s
#define s struct ip6t_srh1
static const struct xt_option_entry srh1_opts[] = {
{ .name = "srh-next-hdr", .id = O_SRH_NEXTHDR, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, next_hdr)},
{ .name = "srh-hdr-len-eq", .id = O_SRH_LEN_EQ, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, hdr_len)},
{ .name = "srh-hdr-len-gt", .id = O_SRH_LEN_GT, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, hdr_len)},
{ .name = "srh-hdr-len-lt", .id = O_SRH_LEN_LT, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, hdr_len)},
{ .name = "srh-segs-left-eq", .id = O_SRH_SEGS_EQ, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, segs_left)},
{ .name = "srh-segs-left-gt", .id = O_SRH_SEGS_GT, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, segs_left)},
{ .name = "srh-segs-left-lt", .id = O_SRH_SEGS_LT, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, segs_left)},
{ .name = "srh-last-entry-eq", .id = O_SRH_LAST_EQ, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, last_entry)},
{ .name = "srh-last-entry-gt", .id = O_SRH_LAST_GT, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, last_entry)},
{ .name = "srh-last-entry-lt", .id = O_SRH_LAST_LT, .type = XTTYPE_UINT8,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, last_entry)},
{ .name = "srh-tag", .id = O_SRH_TAG, .type = XTTYPE_UINT16,
.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, tag)},
{ .name = "srh-psid", .id = O_SRH_PSID, .type = XTTYPE_HOSTMASK,
.flags = XTOPT_INVERT},
{ .name = "srh-nsid", .id = O_SRH_NSID, .type = XTTYPE_HOSTMASK,
.flags = XTOPT_INVERT},
{ .name = "srh-lsid", .id = O_SRH_LSID, .type = XTTYPE_HOSTMASK,
.flags = XTOPT_INVERT},
{ }
};
#undef s
static void srh_init(struct xt_entry_match *m)
{
struct ip6t_srh *srhinfo = (void *)m->data;
srhinfo->mt_flags = 0;
srhinfo->mt_invflags = 0;
}
static void srh1_init(struct xt_entry_match *m)
{
struct ip6t_srh1 *srhinfo = (void *)m->data;
srhinfo->mt_flags = 0;
srhinfo->mt_invflags = 0;
memset(srhinfo->psid_addr.s6_addr, 0, sizeof(srhinfo->psid_addr.s6_addr));
memset(srhinfo->nsid_addr.s6_addr, 0, sizeof(srhinfo->nsid_addr.s6_addr));
memset(srhinfo->lsid_addr.s6_addr, 0, sizeof(srhinfo->lsid_addr.s6_addr));
memset(srhinfo->psid_msk.s6_addr, 0, sizeof(srhinfo->psid_msk.s6_addr));
memset(srhinfo->nsid_msk.s6_addr, 0, sizeof(srhinfo->nsid_msk.s6_addr));
memset(srhinfo->lsid_msk.s6_addr, 0, sizeof(srhinfo->lsid_msk.s6_addr));
}
static void srh_parse(struct xt_option_call *cb)
{
struct ip6t_srh *srhinfo = cb->data;
xtables_option_parse(cb);
switch (cb->entry->id) {
case O_SRH_NEXTHDR:
srhinfo->mt_flags |= IP6T_SRH_NEXTHDR;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_NEXTHDR;
break;
case O_SRH_LEN_EQ:
srhinfo->mt_flags |= IP6T_SRH_LEN_EQ;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_LEN_EQ;
break;
case O_SRH_LEN_GT:
srhinfo->mt_flags |= IP6T_SRH_LEN_GT;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_LEN_GT;
break;
case O_SRH_LEN_LT:
srhinfo->mt_flags |= IP6T_SRH_LEN_LT;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_LEN_LT;
break;
case O_SRH_SEGS_EQ:
srhinfo->mt_flags |= IP6T_SRH_SEGS_EQ;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_SEGS_EQ;
break;
case O_SRH_SEGS_GT:
srhinfo->mt_flags |= IP6T_SRH_SEGS_GT;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_SEGS_GT;
break;
case O_SRH_SEGS_LT:
srhinfo->mt_flags |= IP6T_SRH_SEGS_LT;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_SEGS_LT;
break;
case O_SRH_LAST_EQ:
srhinfo->mt_flags |= IP6T_SRH_LAST_EQ;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_LAST_EQ;
break;
case O_SRH_LAST_GT:
srhinfo->mt_flags |= IP6T_SRH_LAST_GT;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_LAST_GT;
break;
case O_SRH_LAST_LT:
srhinfo->mt_flags |= IP6T_SRH_LAST_LT;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_LAST_LT;
break;
case O_SRH_TAG:
srhinfo->mt_flags |= IP6T_SRH_TAG;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_TAG;
break;
}
}
static void srh1_parse(struct xt_option_call *cb)
{
struct ip6t_srh1 *srhinfo = cb->data;
xtables_option_parse(cb);
switch (cb->entry->id) {
case O_SRH_NEXTHDR:
srhinfo->mt_flags |= IP6T_SRH_NEXTHDR;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_NEXTHDR;
break;
case O_SRH_LEN_EQ:
srhinfo->mt_flags |= IP6T_SRH_LEN_EQ;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_LEN_EQ;
break;
case O_SRH_LEN_GT:
srhinfo->mt_flags |= IP6T_SRH_LEN_GT;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_LEN_GT;
break;
case O_SRH_LEN_LT:
srhinfo->mt_flags |= IP6T_SRH_LEN_LT;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_LEN_LT;
break;
case O_SRH_SEGS_EQ:
srhinfo->mt_flags |= IP6T_SRH_SEGS_EQ;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_SEGS_EQ;
break;
case O_SRH_SEGS_GT:
srhinfo->mt_flags |= IP6T_SRH_SEGS_GT;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_SEGS_GT;
break;
case O_SRH_SEGS_LT:
srhinfo->mt_flags |= IP6T_SRH_SEGS_LT;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_SEGS_LT;
break;
case O_SRH_LAST_EQ:
srhinfo->mt_flags |= IP6T_SRH_LAST_EQ;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_LAST_EQ;
break;
case O_SRH_LAST_GT:
srhinfo->mt_flags |= IP6T_SRH_LAST_GT;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_LAST_GT;
break;
case O_SRH_LAST_LT:
srhinfo->mt_flags |= IP6T_SRH_LAST_LT;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_LAST_LT;
break;
case O_SRH_TAG:
srhinfo->mt_flags |= IP6T_SRH_TAG;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_TAG;
break;
case O_SRH_PSID:
srhinfo->mt_flags |= IP6T_SRH_PSID;
srhinfo->psid_addr = cb->val.haddr.in6;
srhinfo->psid_msk = cb->val.hmask.in6;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_PSID;
break;
case O_SRH_NSID:
srhinfo->mt_flags |= IP6T_SRH_NSID;
srhinfo->nsid_addr = cb->val.haddr.in6;
srhinfo->nsid_msk = cb->val.hmask.in6;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_NSID;
break;
case O_SRH_LSID:
srhinfo->mt_flags |= IP6T_SRH_LSID;
srhinfo->lsid_addr = cb->val.haddr.in6;
srhinfo->lsid_msk = cb->val.hmask.in6;
if (cb->invert)
srhinfo->mt_invflags |= IP6T_SRH_INV_LSID;
break;
}
}
static void srh_print(const void *ip, const struct xt_entry_match *match,
int numeric)
{
const struct ip6t_srh *srhinfo = (struct ip6t_srh *)match->data;
printf(" srh");
if (srhinfo->mt_flags & IP6T_SRH_NEXTHDR)
printf(" next-hdr:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_NEXTHDR ? "!" : "",
srhinfo->next_hdr);
if (srhinfo->mt_flags & IP6T_SRH_LEN_EQ)
printf(" hdr-len-eq:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LEN_EQ ? "!" : "",
srhinfo->hdr_len);
if (srhinfo->mt_flags & IP6T_SRH_LEN_GT)
printf(" hdr-len-gt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LEN_GT ? "!" : "",
srhinfo->hdr_len);
if (srhinfo->mt_flags & IP6T_SRH_LEN_LT)
printf(" hdr-len-lt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LEN_LT ? "!" : "",
srhinfo->hdr_len);
if (srhinfo->mt_flags & IP6T_SRH_SEGS_EQ)
printf(" segs-left-eq:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_EQ ? "!" : "",
srhinfo->segs_left);
if (srhinfo->mt_flags & IP6T_SRH_SEGS_GT)
printf(" segs-left-gt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_GT ? "!" : "",
srhinfo->segs_left);
if (srhinfo->mt_flags & IP6T_SRH_SEGS_LT)
printf(" segs-left-lt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_LT ? "!" : "",
srhinfo->segs_left);
if (srhinfo->mt_flags & IP6T_SRH_LAST_EQ)
printf(" last-entry-eq:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LAST_EQ ? "!" : "",
srhinfo->last_entry);
if (srhinfo->mt_flags & IP6T_SRH_LAST_GT)
printf(" last-entry-gt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LAST_GT ? "!" : "",
srhinfo->last_entry);
if (srhinfo->mt_flags & IP6T_SRH_LAST_LT)
printf(" last-entry-lt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LAST_LT ? "!" : "",
srhinfo->last_entry);
if (srhinfo->mt_flags & IP6T_SRH_TAG)
printf(" tag:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_TAG ? "!" : "",
srhinfo->tag);
}
static void srh1_print(const void *ip, const struct xt_entry_match *match, int numeric)
{
const struct ip6t_srh1 *srhinfo = (struct ip6t_srh1 *)match->data;
printf(" srh");
if (srhinfo->mt_flags & IP6T_SRH_NEXTHDR)
printf(" next-hdr:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_NEXTHDR ? "!" : "",
srhinfo->next_hdr);
if (srhinfo->mt_flags & IP6T_SRH_LEN_EQ)
printf(" hdr-len-eq:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LEN_EQ ? "!" : "",
srhinfo->hdr_len);
if (srhinfo->mt_flags & IP6T_SRH_LEN_GT)
printf(" hdr-len-gt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LEN_GT ? "!" : "",
srhinfo->hdr_len);
if (srhinfo->mt_flags & IP6T_SRH_LEN_LT)
printf(" hdr-len-lt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LEN_LT ? "!" : "",
srhinfo->hdr_len);
if (srhinfo->mt_flags & IP6T_SRH_SEGS_EQ)
printf(" segs-left-eq:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_EQ ? "!" : "",
srhinfo->segs_left);
if (srhinfo->mt_flags & IP6T_SRH_SEGS_GT)
printf(" segs-left-gt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_GT ? "!" : "",
srhinfo->segs_left);
if (srhinfo->mt_flags & IP6T_SRH_SEGS_LT)
printf(" segs-left-lt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_LT ? "!" : "",
srhinfo->segs_left);
if (srhinfo->mt_flags & IP6T_SRH_LAST_EQ)
printf(" last-entry-eq:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LAST_EQ ? "!" : "",
srhinfo->last_entry);
if (srhinfo->mt_flags & IP6T_SRH_LAST_GT)
printf(" last-entry-gt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LAST_GT ? "!" : "",
srhinfo->last_entry);
if (srhinfo->mt_flags & IP6T_SRH_LAST_LT)
printf(" last-entry-lt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LAST_LT ? "!" : "",
srhinfo->last_entry);
if (srhinfo->mt_flags & IP6T_SRH_TAG)
printf(" tag:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_TAG ? "!" : "",
srhinfo->tag);
if (srhinfo->mt_flags & IP6T_SRH_PSID)
printf(" psid %s %s/%u", srhinfo->mt_invflags & IP6T_SRH_INV_PSID ? "!" : "",
xtables_ip6addr_to_numeric(&srhinfo->psid_addr),
xtables_ip6mask_to_cidr(&srhinfo->psid_msk));
if (srhinfo->mt_flags & IP6T_SRH_NSID)
printf(" nsid %s %s/%u", srhinfo->mt_invflags & IP6T_SRH_INV_NSID ? "!" : "",
xtables_ip6addr_to_numeric(&srhinfo->nsid_addr),
xtables_ip6mask_to_cidr(&srhinfo->nsid_msk));
if (srhinfo->mt_flags & IP6T_SRH_LSID)
printf(" lsid %s %s/%u", srhinfo->mt_invflags & IP6T_SRH_INV_LSID ? "!" : "",
xtables_ip6addr_to_numeric(&srhinfo->lsid_addr),
xtables_ip6mask_to_cidr(&srhinfo->lsid_msk));
}
static void srh_save(const void *ip, const struct xt_entry_match *match)
{
const struct ip6t_srh *srhinfo = (struct ip6t_srh *)match->data;
if (srhinfo->mt_flags & IP6T_SRH_NEXTHDR)
printf("%s --srh-next-hdr %u", (srhinfo->mt_invflags & IP6T_SRH_INV_NEXTHDR) ? " !" : "",
srhinfo->next_hdr);
if (srhinfo->mt_flags & IP6T_SRH_LEN_EQ)
printf("%s --srh-hdr-len-eq %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LEN_EQ) ? " !" : "",
srhinfo->hdr_len);
if (srhinfo->mt_flags & IP6T_SRH_LEN_GT)
printf("%s --srh-hdr-len-gt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LEN_GT) ? " !" : "",
srhinfo->hdr_len);
if (srhinfo->mt_flags & IP6T_SRH_LEN_LT)
printf("%s --srh-hdr-len-lt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LEN_LT) ? " !" : "",
srhinfo->hdr_len);
if (srhinfo->mt_flags & IP6T_SRH_SEGS_EQ)
printf("%s --srh-segs-left-eq %u", (srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_EQ) ? " !" : "",
srhinfo->segs_left);
if (srhinfo->mt_flags & IP6T_SRH_SEGS_GT)
printf("%s --srh-segs-left-gt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_GT) ? " !" : "",
srhinfo->segs_left);
if (srhinfo->mt_flags & IP6T_SRH_SEGS_LT)
printf("%s --srh-segs-left-lt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_LT) ? " !" : "",
srhinfo->segs_left);
if (srhinfo->mt_flags & IP6T_SRH_LAST_EQ)
printf("%s --srh-last-entry-eq %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LAST_EQ) ? " !" : "",
srhinfo->last_entry);
if (srhinfo->mt_flags & IP6T_SRH_LAST_GT)
printf("%s --srh-last-entry-gt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LAST_GT) ? " !" : "",
srhinfo->last_entry);
if (srhinfo->mt_flags & IP6T_SRH_LAST_LT)
printf("%s --srh-last-entry-lt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LAST_LT) ? " !" : "",
srhinfo->last_entry);
if (srhinfo->mt_flags & IP6T_SRH_TAG)
printf("%s --srh-tag %u", (srhinfo->mt_invflags & IP6T_SRH_INV_TAG) ? " !" : "",
srhinfo->tag);
}
static void srh1_save(const void *ip, const struct xt_entry_match *match)
{
const struct ip6t_srh1 *srhinfo = (struct ip6t_srh1 *)match->data;
if (srhinfo->mt_flags & IP6T_SRH_NEXTHDR)
printf("%s --srh-next-hdr %u", (srhinfo->mt_invflags & IP6T_SRH_INV_NEXTHDR) ? " !" : "",
srhinfo->next_hdr);
if (srhinfo->mt_flags & IP6T_SRH_LEN_EQ)
printf("%s --srh-hdr-len-eq %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LEN_EQ) ? " !" : "",
srhinfo->hdr_len);
if (srhinfo->mt_flags & IP6T_SRH_LEN_GT)
printf("%s --srh-hdr-len-gt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LEN_GT) ? " !" : "",
srhinfo->hdr_len);
if (srhinfo->mt_flags & IP6T_SRH_LEN_LT)
printf("%s --srh-hdr-len-lt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LEN_LT) ? " !" : "",
srhinfo->hdr_len);
if (srhinfo->mt_flags & IP6T_SRH_SEGS_EQ)
printf("%s --srh-segs-left-eq %u", (srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_EQ) ? " !" : "",
srhinfo->segs_left);
if (srhinfo->mt_flags & IP6T_SRH_SEGS_GT)
printf("%s --srh-segs-left-gt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_GT) ? " !" : "",
srhinfo->segs_left);
if (srhinfo->mt_flags & IP6T_SRH_SEGS_LT)
printf("%s --srh-segs-left-lt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_LT) ? " !" : "",
srhinfo->segs_left);
if (srhinfo->mt_flags & IP6T_SRH_LAST_EQ)
printf("%s --srh-last-entry-eq %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LAST_EQ) ? " !" : "",
srhinfo->last_entry);
if (srhinfo->mt_flags & IP6T_SRH_LAST_GT)
printf("%s --srh-last-entry-gt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LAST_GT) ? " !" : "",
srhinfo->last_entry);
if (srhinfo->mt_flags & IP6T_SRH_LAST_LT)
printf("%s --srh-last-entry-lt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LAST_LT) ? " !" : "",
srhinfo->last_entry);
if (srhinfo->mt_flags & IP6T_SRH_TAG)
printf("%s --srh-tag %u", (srhinfo->mt_invflags & IP6T_SRH_INV_TAG) ? " !" : "",
srhinfo->tag);
if (srhinfo->mt_flags & IP6T_SRH_PSID)
printf("%s --srh-psid %s/%u", srhinfo->mt_invflags & IP6T_SRH_INV_PSID ? " !" : "",
xtables_ip6addr_to_numeric(&srhinfo->psid_addr),
xtables_ip6mask_to_cidr(&srhinfo->psid_msk));
if (srhinfo->mt_flags & IP6T_SRH_NSID)
printf("%s --srh-nsid %s/%u", srhinfo->mt_invflags & IP6T_SRH_INV_NSID ? " !" : "",
xtables_ip6addr_to_numeric(&srhinfo->nsid_addr),
xtables_ip6mask_to_cidr(&srhinfo->nsid_msk));
if (srhinfo->mt_flags & IP6T_SRH_LSID)
printf("%s --srh-lsid %s/%u", srhinfo->mt_invflags & IP6T_SRH_INV_LSID ? " !" : "",
xtables_ip6addr_to_numeric(&srhinfo->lsid_addr),
xtables_ip6mask_to_cidr(&srhinfo->lsid_msk));
}
static struct xtables_match srh_mt6_reg[] = {
{
.name = "srh",
.version = XTABLES_VERSION,
.revision = 0,
.family = NFPROTO_IPV6,
.size = XT_ALIGN(sizeof(struct ip6t_srh)),
.userspacesize = XT_ALIGN(sizeof(struct ip6t_srh)),
.help = srh_help,
.init = srh_init,
.print = srh_print,
.save = srh_save,
.x6_parse = srh_parse,
.x6_options = srh_opts,
},
{
.name = "srh",
.version = XTABLES_VERSION,
.revision = 1,
.family = NFPROTO_IPV6,
.size = XT_ALIGN(sizeof(struct ip6t_srh1)),
.userspacesize = XT_ALIGN(sizeof(struct ip6t_srh1)),
.help = srh_help,
.init = srh1_init,
.print = srh1_print,
.save = srh1_save,
.x6_parse = srh1_parse,
.x6_options = srh1_opts,
}
};
void
_init(void)
{
xtables_register_matches(srh_mt6_reg, ARRAY_SIZE(srh_mt6_reg));
}
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