obj/tunnel.c
/*
* (C) 2018 by Pablo Neira Ayuso <pablo@netfilter.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <stdio.h>
#include <stdint.h>
#include <arpa/inet.h>
#include <errno.h>
#include <inttypes.h>
#include <linux/netfilter/nf_tables.h>
#include <libmnl/libmnl.h>
#include <libnftnl/object.h>
#include "internal.h"
#include "obj.h"
static int
nftnl_obj_tunnel_set(struct nftnl_obj *e, uint16_t type,
const void *data, uint32_t data_len)
{
struct nftnl_obj_tunnel *tun = nftnl_obj_data(e);
switch (type) {
case NFTNL_OBJ_TUNNEL_ID:
memcpy(&tun->id, data, sizeof(tun->id));
break;
case NFTNL_OBJ_TUNNEL_IPV4_SRC:
memcpy(&tun->src_v4, data, sizeof(tun->src_v4));
break;
case NFTNL_OBJ_TUNNEL_IPV4_DST:
memcpy(&tun->dst_v4, data, sizeof(tun->dst_v4));
break;
case NFTNL_OBJ_TUNNEL_IPV6_SRC:
memcpy(&tun->src_v6, data, sizeof(struct in6_addr));
break;
case NFTNL_OBJ_TUNNEL_IPV6_DST:
memcpy(&tun->dst_v6, data, sizeof(struct in6_addr));
break;
case NFTNL_OBJ_TUNNEL_IPV6_FLOWLABEL:
memcpy(&tun->flowlabel, data, sizeof(tun->flowlabel));
break;
case NFTNL_OBJ_TUNNEL_SPORT:
memcpy(&tun->sport, data, sizeof(tun->sport));
break;
case NFTNL_OBJ_TUNNEL_DPORT:
memcpy(&tun->dport, data, sizeof(tun->dport));
break;
case NFTNL_OBJ_TUNNEL_FLAGS:
memcpy(&tun->tun_flags, data, sizeof(tun->tun_flags));
break;
case NFTNL_OBJ_TUNNEL_TOS:
memcpy(&tun->tun_tos, data, sizeof(tun->tun_tos));
break;
case NFTNL_OBJ_TUNNEL_TTL:
memcpy(&tun->tun_ttl, data, sizeof(tun->tun_ttl));
break;
case NFTNL_OBJ_TUNNEL_VXLAN_GBP:
memcpy(&tun->u.tun_vxlan.gbp, data, sizeof(tun->u.tun_vxlan.gbp));
break;
case NFTNL_OBJ_TUNNEL_ERSPAN_VERSION:
memcpy(&tun->u.tun_erspan.version, data, sizeof(tun->u.tun_erspan.version));
break;
case NFTNL_OBJ_TUNNEL_ERSPAN_V1_INDEX:
memcpy(&tun->u.tun_erspan.u.v1_index, data, sizeof(tun->u.tun_erspan.u.v1_index));
break;
case NFTNL_OBJ_TUNNEL_ERSPAN_V2_HWID:
memcpy(&tun->u.tun_erspan.u.v2.hwid, data, sizeof(tun->u.tun_erspan.u.v2.hwid));
break;
case NFTNL_OBJ_TUNNEL_ERSPAN_V2_DIR:
memcpy(&tun->u.tun_erspan.u.v2.dir, data, sizeof(tun->u.tun_erspan.u.v2.dir));
break;
default:
return -1;
}
return 0;
}
static const void *
nftnl_obj_tunnel_get(const struct nftnl_obj *e, uint16_t type,
uint32_t *data_len)
{
struct nftnl_obj_tunnel *tun = nftnl_obj_data(e);
switch (type) {
case NFTNL_OBJ_TUNNEL_ID:
*data_len = sizeof(tun->id);
return &tun->id;
case NFTNL_OBJ_TUNNEL_IPV4_SRC:
*data_len = sizeof(tun->src_v4);
return &tun->src_v4;
case NFTNL_OBJ_TUNNEL_IPV4_DST:
*data_len = sizeof(tun->dst_v4);
return &tun->dst_v4;
case NFTNL_OBJ_TUNNEL_IPV6_SRC:
*data_len = sizeof(tun->src_v6);
return &tun->src_v6;
case NFTNL_OBJ_TUNNEL_IPV6_DST:
*data_len = sizeof(tun->dst_v6);
return &tun->dst_v6;
case NFTNL_OBJ_TUNNEL_IPV6_FLOWLABEL:
*data_len = sizeof(tun->flowlabel);
return &tun->flowlabel;
case NFTNL_OBJ_TUNNEL_SPORT:
*data_len = sizeof(tun->sport);
return &tun->sport;
case NFTNL_OBJ_TUNNEL_DPORT:
*data_len = sizeof(tun->dport);
return &tun->dport;
case NFTNL_OBJ_TUNNEL_FLAGS:
*data_len = sizeof(tun->tun_flags);
return &tun->tun_flags;
case NFTNL_OBJ_TUNNEL_TOS:
*data_len = sizeof(tun->tun_tos);
return &tun->tun_tos;
case NFTNL_OBJ_TUNNEL_TTL:
*data_len = sizeof(tun->tun_ttl);
return &tun->tun_ttl;
case NFTNL_OBJ_TUNNEL_VXLAN_GBP:
*data_len = sizeof(tun->u.tun_vxlan.gbp);
return &tun->u.tun_vxlan.gbp;
case NFTNL_OBJ_TUNNEL_ERSPAN_VERSION:
*data_len = sizeof(tun->u.tun_erspan.version);
return &tun->u.tun_erspan.version;
case NFTNL_OBJ_TUNNEL_ERSPAN_V1_INDEX:
*data_len = sizeof(tun->u.tun_erspan.u.v1_index);
return &tun->u.tun_erspan.u.v1_index;
case NFTNL_OBJ_TUNNEL_ERSPAN_V2_HWID:
*data_len = sizeof(tun->u.tun_erspan.u.v2.hwid);
return &tun->u.tun_erspan.u.v2.hwid;
case NFTNL_OBJ_TUNNEL_ERSPAN_V2_DIR:
*data_len = sizeof(tun->u.tun_erspan.u.v2.dir);
return &tun->u.tun_erspan.u.v2.dir;
}
return NULL;
}
static int nftnl_obj_tunnel_cb(const struct nlattr *attr, void *data)
{
const struct nlattr **tb = data;
int type = mnl_attr_get_type(attr);
if (mnl_attr_type_valid(attr, NFTA_TUNNEL_KEY_MAX) < 0)
return MNL_CB_OK;
switch(type) {
case NFTA_TUNNEL_KEY_ID:
case NFTA_TUNNEL_KEY_FLAGS:
if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0)
abi_breakage();
break;
case NFTA_TUNNEL_KEY_IP:
case NFTA_TUNNEL_KEY_IP6:
case NFTA_TUNNEL_KEY_OPTS:
if (mnl_attr_validate(attr, MNL_TYPE_NESTED) < 0)
abi_breakage();
break;
case NFTA_TUNNEL_KEY_SPORT:
case NFTA_TUNNEL_KEY_DPORT:
if (mnl_attr_validate(attr, MNL_TYPE_U16) < 0)
abi_breakage();
break;
case NFTA_TUNNEL_KEY_TOS:
case NFTA_TUNNEL_KEY_TTL:
if (mnl_attr_validate(attr, MNL_TYPE_U8) < 0)
abi_breakage();
break;
}
tb[type] = attr;
return MNL_CB_OK;
}
static void
nftnl_obj_tunnel_build(struct nlmsghdr *nlh, const struct nftnl_obj *e)
{
struct nftnl_obj_tunnel *tun = nftnl_obj_data(e);
struct nlattr *nest;
if (e->flags & (1 << NFTNL_OBJ_TUNNEL_ID))
mnl_attr_put_u32(nlh, NFTA_TUNNEL_KEY_ID, htonl(tun->id));
if (e->flags & (1 << NFTNL_OBJ_TUNNEL_IPV4_SRC) ||
e->flags & (1 << NFTNL_OBJ_TUNNEL_IPV4_DST)) {
nest = mnl_attr_nest_start(nlh, NFTA_TUNNEL_KEY_IP);
if (e->flags & (1 << NFTNL_OBJ_TUNNEL_IPV4_SRC))
mnl_attr_put_u32(nlh, NFTA_TUNNEL_KEY_IP_SRC, tun->src_v4);
if (e->flags & (1 << NFTNL_OBJ_TUNNEL_IPV4_DST))
mnl_attr_put_u32(nlh, NFTA_TUNNEL_KEY_IP_DST, tun->dst_v4);
mnl_attr_nest_end(nlh, nest);
}
if (e->flags & (1 << NFTNL_OBJ_TUNNEL_IPV6_SRC) ||
e->flags & (1 << NFTNL_OBJ_TUNNEL_IPV6_DST)) {
nest = mnl_attr_nest_start(nlh, NFTA_TUNNEL_KEY_IP6);
if (e->flags & (1 << NFTNL_OBJ_TUNNEL_IPV6_SRC))
mnl_attr_put(nlh, NFTA_TUNNEL_KEY_IP6_SRC,
sizeof(tun->src_v6), &tun->src_v6);
if (e->flags & (1 << NFTNL_OBJ_TUNNEL_IPV6_DST))
mnl_attr_put(nlh, NFTA_TUNNEL_KEY_IP6_DST,
sizeof(tun->dst_v6), &tun->dst_v6);
if (e->flags & (1 << NFTNL_OBJ_TUNNEL_IPV6_FLOWLABEL))
mnl_attr_put_u32(nlh, NFTA_TUNNEL_KEY_IP6_FLOWLABEL,
htonl(tun->flowlabel));
mnl_attr_nest_end(nlh, nest);
}
if (e->flags & (1 << NFTNL_OBJ_TUNNEL_SPORT))
mnl_attr_put_u16(nlh, NFTA_TUNNEL_KEY_SPORT, htons(tun->sport));
if (e->flags & (1 << NFTNL_OBJ_TUNNEL_DPORT))
mnl_attr_put_u16(nlh, NFTA_TUNNEL_KEY_DPORT, htons(tun->dport));
if (e->flags & (1 << NFTNL_OBJ_TUNNEL_TOS))
mnl_attr_put_u8(nlh, NFTA_TUNNEL_KEY_TOS, tun->tun_tos);
if (e->flags & (1 << NFTNL_OBJ_TUNNEL_TTL))
mnl_attr_put_u8(nlh, NFTA_TUNNEL_KEY_TTL, tun->tun_ttl);
if (e->flags & (1 << NFTNL_OBJ_TUNNEL_FLAGS))
mnl_attr_put_u32(nlh, NFTA_TUNNEL_KEY_FLAGS, htonl(tun->tun_flags));
if (e->flags & (1 << NFTNL_OBJ_TUNNEL_VXLAN_GBP)) {
nest = mnl_attr_nest_start(nlh, NFTA_TUNNEL_KEY_OPTS);
mnl_attr_put_u32(nlh, NFTA_TUNNEL_KEY_VXLAN_GBP,
htonl(tun->u.tun_vxlan.gbp));
mnl_attr_nest_end(nlh, nest);
}
if (e->flags & (1 << NFTNL_OBJ_TUNNEL_ERSPAN_VERSION) &&
(e->flags & (1 << NFTNL_OBJ_TUNNEL_ERSPAN_V1_INDEX) ||
(e->flags & (1 << NFTNL_OBJ_TUNNEL_ERSPAN_V2_HWID) &&
e->flags & (1u << NFTNL_OBJ_TUNNEL_ERSPAN_V2_DIR)))) {
struct nlattr *nest_inner;
nest = mnl_attr_nest_start(nlh, NFTA_TUNNEL_KEY_OPTS);
nest_inner = mnl_attr_nest_start(nlh, NFTA_TUNNEL_KEY_OPTS_ERSPAN);
mnl_attr_put_u32(nlh, NFTA_TUNNEL_KEY_ERSPAN_VERSION,
htonl(tun->u.tun_erspan.version));
if (e->flags & (1 << NFTNL_OBJ_TUNNEL_ERSPAN_V1_INDEX))
mnl_attr_put_u32(nlh, NFTA_TUNNEL_KEY_ERSPAN_V1_INDEX,
htonl(tun->u.tun_erspan.u.v1_index));
if (e->flags & (1 << NFTNL_OBJ_TUNNEL_ERSPAN_V2_HWID))
mnl_attr_put_u8(nlh, NFTA_TUNNEL_KEY_ERSPAN_V2_HWID,
tun->u.tun_erspan.u.v2.hwid);
if (e->flags & (1u << NFTNL_OBJ_TUNNEL_ERSPAN_V2_DIR))
mnl_attr_put_u8(nlh, NFTA_TUNNEL_KEY_ERSPAN_V2_DIR,
tun->u.tun_erspan.u.v2.dir);
mnl_attr_nest_end(nlh, nest_inner);
mnl_attr_nest_end(nlh, nest);
}
}
static int nftnl_obj_tunnel_ip_cb(const struct nlattr *attr, void *data)
{
const struct nlattr **tb = data;
int type = mnl_attr_get_type(attr);
if (mnl_attr_type_valid(attr, NFTA_TUNNEL_KEY_MAX) < 0)
return MNL_CB_OK;
switch (type) {
case NFTA_TUNNEL_KEY_IP_SRC:
case NFTA_TUNNEL_KEY_IP_DST:
if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0)
abi_breakage();
break;
}
tb[type] = attr;
return MNL_CB_OK;
}
static int nftnl_obj_tunnel_parse_ip(struct nftnl_obj *e, struct nlattr *attr,
struct nftnl_obj_tunnel *tun)
{
struct nlattr *tb[NFTA_TUNNEL_KEY_IP_MAX + 1] = {};
if (mnl_attr_parse_nested(attr, nftnl_obj_tunnel_ip_cb, tb) < 0)
return -1;
if (tb[NFTA_TUNNEL_KEY_IP_SRC]) {
tun->src_v4 = mnl_attr_get_u32(tb[NFTA_TUNNEL_KEY_IP_SRC]);
e->flags |= (1 << NFTNL_OBJ_TUNNEL_IPV4_SRC);
}
if (tb[NFTA_TUNNEL_KEY_IP_DST]) {
tun->dst_v4 = mnl_attr_get_u32(tb[NFTA_TUNNEL_KEY_IP_DST]);
e->flags |= (1 << NFTNL_OBJ_TUNNEL_IPV4_DST);
}
return 0;
}
static int nftnl_obj_tunnel_ip6_cb(const struct nlattr *attr, void *data)
{
const struct nlattr **tb = data;
int type = mnl_attr_get_type(attr);
if (mnl_attr_type_valid(attr, NFTA_TUNNEL_KEY_MAX) < 0)
return MNL_CB_OK;
switch(type) {
case NFTA_TUNNEL_KEY_IP6_SRC:
case NFTA_TUNNEL_KEY_IP6_DST:
if (mnl_attr_validate(attr, MNL_TYPE_BINARY) < 0)
abi_breakage();
break;
case NFTA_TUNNEL_KEY_IP6_FLOWLABEL:
if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0)
abi_breakage();
break;
}
tb[type] = attr;
return MNL_CB_OK;
}
static int nftnl_obj_tunnel_parse_ip6(struct nftnl_obj *e, struct nlattr *attr,
struct nftnl_obj_tunnel *tun)
{
struct nlattr *tb[NFTA_TUNNEL_KEY_IP6_MAX + 1] = {};
if (mnl_attr_parse_nested(attr, nftnl_obj_tunnel_ip6_cb, tb) < 0)
return -1;
if (tb[NFTA_TUNNEL_KEY_IP6_SRC]) {
memcpy(&tun->src_v6,
mnl_attr_get_payload(tb[NFTA_TUNNEL_KEY_IP6_SRC]),
sizeof(struct in6_addr));
e->flags |= (1 << NFTNL_OBJ_TUNNEL_IPV6_SRC);
}
if (tb[NFTA_TUNNEL_KEY_IP6_DST]) {
memcpy(&tun->dst_v6,
mnl_attr_get_payload(tb[NFTA_TUNNEL_KEY_IP6_DST]),
sizeof(struct in6_addr));
e->flags |= (1 << NFTNL_OBJ_TUNNEL_IPV6_DST);
}
if (tb[NFTA_TUNNEL_KEY_IP6_FLOWLABEL]) {
tun->flowlabel =
ntohl(mnl_attr_get_u32(tb[NFTA_TUNNEL_KEY_IP6_FLOWLABEL]));
e->flags |= (1 << NFTNL_OBJ_TUNNEL_IPV6_FLOWLABEL);
}
return 0;
}
static int nftnl_obj_tunnel_vxlan_cb(const struct nlattr *attr, void *data)
{
const struct nlattr **tb = data;
int type = mnl_attr_get_type(attr);
if (mnl_attr_type_valid(attr, NFTA_TUNNEL_KEY_VXLAN_MAX) < 0)
return MNL_CB_OK;
switch (type) {
case NFTA_TUNNEL_KEY_VXLAN_GBP:
if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0)
abi_breakage();
break;
}
tb[type] = attr;
return MNL_CB_OK;
}
static int
nftnl_obj_tunnel_parse_vxlan(struct nftnl_obj *e, struct nlattr *attr,
struct nftnl_obj_tunnel *tun)
{
struct nlattr *tb[NFTA_TUNNEL_KEY_VXLAN_MAX + 1] = {};
if (mnl_attr_parse_nested(attr, nftnl_obj_tunnel_vxlan_cb, tb) < 0)
return -1;
if (tb[NFTA_TUNNEL_KEY_VXLAN_GBP]) {
tun->u.tun_vxlan.gbp =
ntohl(mnl_attr_get_u32(tb[NFTA_TUNNEL_KEY_VXLAN_GBP]));
e->flags |= (1 << NFTNL_OBJ_TUNNEL_VXLAN_GBP);
}
return 0;
}
static int nftnl_obj_tunnel_erspan_cb(const struct nlattr *attr, void *data)
{
const struct nlattr **tb = data;
int type = mnl_attr_get_type(attr);
if (mnl_attr_type_valid(attr, NFTA_TUNNEL_KEY_ERSPAN_MAX) < 0)
return MNL_CB_OK;
switch (type) {
case NFTA_TUNNEL_KEY_ERSPAN_VERSION:
case NFTA_TUNNEL_KEY_ERSPAN_V1_INDEX:
if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0)
abi_breakage();
break;
case NFTA_TUNNEL_KEY_ERSPAN_V2_HWID:
case NFTA_TUNNEL_KEY_ERSPAN_V2_DIR:
if (mnl_attr_validate(attr, MNL_TYPE_U8) < 0)
abi_breakage();
break;
}
tb[type] = attr;
return MNL_CB_OK;
}
static int
nftnl_obj_tunnel_parse_erspan(struct nftnl_obj *e, struct nlattr *attr,
struct nftnl_obj_tunnel *tun)
{
struct nlattr *tb[NFTA_TUNNEL_KEY_ERSPAN_MAX + 1] = {};
if (mnl_attr_parse_nested(attr, nftnl_obj_tunnel_erspan_cb, tb) < 0)
return -1;
if (tb[NFTA_TUNNEL_KEY_ERSPAN_VERSION]) {
tun->u.tun_erspan.version =
ntohl(mnl_attr_get_u32(tb[NFTA_TUNNEL_KEY_ERSPAN_VERSION]));
e->flags |= (1 << NFTNL_OBJ_TUNNEL_ERSPAN_VERSION);
}
if (tb[NFTA_TUNNEL_KEY_ERSPAN_V1_INDEX]) {
tun->u.tun_erspan.u.v1_index =
ntohl(mnl_attr_get_u32(tb[NFTA_TUNNEL_KEY_ERSPAN_V1_INDEX]));
e->flags |= (1 << NFTNL_OBJ_TUNNEL_ERSPAN_V1_INDEX);
}
if (tb[NFTA_TUNNEL_KEY_ERSPAN_V2_HWID]) {
tun->u.tun_erspan.u.v2.hwid =
mnl_attr_get_u8(tb[NFTA_TUNNEL_KEY_ERSPAN_V2_HWID]);
e->flags |= (1 << NFTNL_OBJ_TUNNEL_ERSPAN_V2_HWID);
}
if (tb[NFTA_TUNNEL_KEY_ERSPAN_V2_DIR]) {
tun->u.tun_erspan.u.v2.dir =
mnl_attr_get_u8(tb[NFTA_TUNNEL_KEY_ERSPAN_V2_DIR]);
e->flags |= (1u << NFTNL_OBJ_TUNNEL_ERSPAN_V2_DIR);
}
return 0;
}
static int nftnl_obj_tunnel_opts_cb(const struct nlattr *attr, void *data)
{
const struct nlattr **tb = data;
int type = mnl_attr_get_type(attr);
if (mnl_attr_type_valid(attr, NFTA_TUNNEL_KEY_OPTS_MAX) < 0)
return MNL_CB_OK;
switch (type) {
case NFTA_TUNNEL_KEY_OPTS_VXLAN:
case NFTA_TUNNEL_KEY_OPTS_ERSPAN:
if (mnl_attr_validate(attr, MNL_TYPE_NESTED) < 0)
abi_breakage();
break;
}
tb[type] = attr;
return MNL_CB_OK;
}
static int
nftnl_obj_tunnel_parse_opts(struct nftnl_obj *e, struct nlattr *attr,
struct nftnl_obj_tunnel *tun)
{
struct nlattr *tb[NFTA_TUNNEL_KEY_OPTS_MAX + 1] = {};
int err = 0;
if (mnl_attr_parse_nested(attr, nftnl_obj_tunnel_opts_cb, tb) < 0)
return -1;
if (tb[NFTA_TUNNEL_KEY_OPTS_VXLAN]) {
err = nftnl_obj_tunnel_parse_vxlan(e, tb[NFTA_TUNNEL_KEY_OPTS_VXLAN],
tun);
} else if (tb[NFTA_TUNNEL_KEY_OPTS_ERSPAN]) {
err = nftnl_obj_tunnel_parse_erspan(e, tb[NFTA_TUNNEL_KEY_OPTS_ERSPAN],
tun);
}
return err;
}
static int
nftnl_obj_tunnel_parse(struct nftnl_obj *e, struct nlattr *attr)
{
struct nftnl_obj_tunnel *tun = nftnl_obj_data(e);
struct nlattr *tb[NFTA_TUNNEL_KEY_MAX + 1] = {};
int err;
if (mnl_attr_parse_nested(attr, nftnl_obj_tunnel_cb, tb) < 0)
return -1;
if (tb[NFTA_TUNNEL_KEY_ID]) {
tun->id = ntohl(mnl_attr_get_u32(tb[NFTA_TUNNEL_KEY_ID]));
e->flags |= (1 << NFTNL_OBJ_TUNNEL_ID);
}
if (tb[NFTA_TUNNEL_KEY_IP]) {
err = nftnl_obj_tunnel_parse_ip(e, tb[NFTA_TUNNEL_KEY_IP], tun);
if (err < 0)
return err;
} else if (tb[NFTA_TUNNEL_KEY_IP6]) {
err = nftnl_obj_tunnel_parse_ip6(e, tb[NFTA_TUNNEL_KEY_IP6], tun);
if (err < 0)
return err;
}
if (tb[NFTA_TUNNEL_KEY_SPORT]) {
tun->sport = ntohs(mnl_attr_get_u16(tb[NFTA_TUNNEL_KEY_SPORT]));
e->flags |= (1 << NFTNL_OBJ_TUNNEL_SPORT);
}
if (tb[NFTA_TUNNEL_KEY_DPORT]) {
tun->dport = ntohs(mnl_attr_get_u16(tb[NFTA_TUNNEL_KEY_DPORT]));
e->flags |= (1 << NFTNL_OBJ_TUNNEL_DPORT);
}
if (tb[NFTA_TUNNEL_KEY_TOS]) {
tun->tun_tos = mnl_attr_get_u8(tb[NFTA_TUNNEL_KEY_TOS]);
e->flags |= (1 << NFTNL_OBJ_TUNNEL_TOS);
}
if (tb[NFTA_TUNNEL_KEY_TTL]) {
tun->tun_ttl = mnl_attr_get_u8(tb[NFTA_TUNNEL_KEY_TTL]);
e->flags |= (1 << NFTNL_OBJ_TUNNEL_TTL);
}
if (tb[NFTA_TUNNEL_KEY_FLAGS]) {
tun->tun_flags = mnl_attr_get_u8(tb[NFTA_TUNNEL_KEY_FLAGS]);
e->flags |= (1 << NFTNL_OBJ_TUNNEL_FLAGS);
}
if (tb[NFTA_TUNNEL_KEY_OPTS]) {
err = nftnl_obj_tunnel_parse_opts(e, tb[NFTA_TUNNEL_KEY_OPTS], tun);
if (err < 0)
return err;
}
return 0;
}
static int nftnl_obj_tunnel_snprintf_default(char *buf, size_t len,
const struct nftnl_obj *e)
{
struct nftnl_obj_tunnel *tun = nftnl_obj_data(e);
return snprintf(buf, len, "id %u ", tun->id);
}
static int nftnl_obj_tunnel_snprintf(char *buf, size_t len, uint32_t type,
uint32_t flags, const struct nftnl_obj *e)
{
if (len)
buf[0] = '\0';
switch (type) {
case NFTNL_OUTPUT_DEFAULT:
return nftnl_obj_tunnel_snprintf_default(buf, len, e);
case NFTNL_OUTPUT_XML:
case NFTNL_OUTPUT_JSON:
default:
break;
}
return -1;
}
struct obj_ops obj_ops_tunnel = {
.name = "tunnel",
.type = NFT_OBJECT_TUNNEL,
.alloc_len = sizeof(struct nftnl_obj_tunnel),
.max_attr = NFTA_TUNNEL_KEY_MAX,
.set = nftnl_obj_tunnel_set,
.get = nftnl_obj_tunnel_get,
.parse = nftnl_obj_tunnel_parse,
.build = nftnl_obj_tunnel_build,
.snprintf = nftnl_obj_tunnel_snprintf,
};