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frr/bgpd/bgp_encap_tlv.c

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright 2015, LabN Consulting, L.L.C.
*/
#include <zebra.h>
#include "command.h"
#include "memory.h"
#include "prefix.h"
#include "filter.h"
#include "stream.h"
#include "bgpd.h"
#include "bgp_attr.h"
#include "bgp_encap_types.h"
#include "bgp_encap_tlv.h"
/***********************************************************************
* SUBTLV ENCODE
***********************************************************************/
/* rfc5512 4.1 */
static struct bgp_attr_encap_subtlv *subtlv_encode_encap_l2tpv3_over_ip(
struct bgp_tea_subtlv_encap_l2tpv3_over_ip *st)
{
struct bgp_attr_encap_subtlv *new;
uint8_t *p;
int total = 4 + st->cookie_length;
/* sanity check */
assert(st->cookie_length <= sizeof(st->cookie));
assert(total <= 0xff);
new = XCALLOC(MTYPE_ENCAP_TLV,
sizeof(struct bgp_attr_encap_subtlv) + total);
assert(new);
new->type = BGP_ENCAP_SUBTLV_TYPE_ENCAPSULATION;
new->length = total;
p = new->value;
*p++ = (st->sessionid & 0xff000000) >> 24;
*p++ = (st->sessionid & 0xff0000) >> 16;
*p++ = (st->sessionid & 0xff00) >> 8;
*p++ = (st->sessionid & 0xff);
memcpy(p, st->cookie, st->cookie_length);
return new;
}
/* rfc5512 4.1 */
static struct bgp_attr_encap_subtlv *
subtlv_encode_encap_gre(struct bgp_tea_subtlv_encap_gre_key *st)
{
struct bgp_attr_encap_subtlv *new;
uint8_t *p;
int total = 4;
assert(total <= 0xff);
new = XCALLOC(MTYPE_ENCAP_TLV,
sizeof(struct bgp_attr_encap_subtlv) + total);
assert(new);
new->type = BGP_ENCAP_SUBTLV_TYPE_ENCAPSULATION;
new->length = total;
p = new->value;
*p++ = (st->gre_key & 0xff000000) >> 24;
*p++ = (st->gre_key & 0xff0000) >> 16;
*p++ = (st->gre_key & 0xff00) >> 8;
*p++ = (st->gre_key & 0xff);
return new;
}
static struct bgp_attr_encap_subtlv *
subtlv_encode_encap_pbb(struct bgp_tea_subtlv_encap_pbb *st)
{
struct bgp_attr_encap_subtlv *new;
uint8_t *p;
int total = 1 + 3 + 6 + 2; /* flags + isid + madaddr + vid */
assert(total <= 0xff);
new = XCALLOC(MTYPE_ENCAP_TLV,
sizeof(struct bgp_attr_encap_subtlv) + total);
assert(new);
new->type = BGP_ENCAP_SUBTLV_TYPE_ENCAPSULATION;
new->length = total;
p = new->value;
*p++ = (st->flag_isid ? 0x80 : 0) | (st->flag_vid ? 0x40 : 0) | 0;
if (st->flag_isid) {
*p = (st->isid & 0xff0000) >> 16;
*(p + 1) = (st->isid & 0xff00) >> 8;
*(p + 2) = (st->isid & 0xff);
}
p += 3;
memcpy(p, st->macaddr, 6);
p += 6;
if (st->flag_vid) {
*p++ = (st->vid & 0xf00) >> 8;
*p++ = st->vid & 0xff;
}
return new;
}
/* rfc5512 4.2 */
static struct bgp_attr_encap_subtlv *
subtlv_encode_proto_type(struct bgp_tea_subtlv_proto_type *st)
{
struct bgp_attr_encap_subtlv *new;
uint8_t *p;
int total = 2;
assert(total <= 0xff);
new = XCALLOC(MTYPE_ENCAP_TLV,
sizeof(struct bgp_attr_encap_subtlv) + total);
assert(new);
new->type = BGP_ENCAP_SUBTLV_TYPE_PROTO_TYPE;
new->length = total;
p = new->value;
*p++ = (st->proto & 0xff00) >> 8;
*p++ = (st->proto & 0xff);
return new;
}
/* rfc5512 4.3 */
static struct bgp_attr_encap_subtlv *
subtlv_encode_color(struct bgp_tea_subtlv_color *st)
{
struct bgp_attr_encap_subtlv *new;
uint8_t *p;
int total = 8;
assert(total <= 0xff);
new = XCALLOC(MTYPE_ENCAP_TLV,
sizeof(struct bgp_attr_encap_subtlv) + total);
assert(new);
new->type = BGP_ENCAP_SUBTLV_TYPE_COLOR;
new->length = total;
p = new->value;
*p++ = 0x03; /* transitive*/
*p++ = 0x0b;
*p++ = 0; /* reserved */
*p++ = 0; /* reserved */
*p++ = (st->color & 0xff000000) >> 24;
*p++ = (st->color & 0xff0000) >> 16;
*p++ = (st->color & 0xff00) >> 8;
*p++ = (st->color & 0xff);
return new;
}
/* rfc 5566 4. */
static struct bgp_attr_encap_subtlv *
subtlv_encode_ipsec_ta(struct bgp_tea_subtlv_ipsec_ta *st)
{
struct bgp_attr_encap_subtlv *new;
uint8_t *p;
int total = 2 + st->authenticator_length;
/* sanity check */
assert(st->authenticator_length <= sizeof(st->value));
assert(total <= 0xff);
new = XCALLOC(MTYPE_ENCAP_TLV,
sizeof(struct bgp_attr_encap_subtlv) + total);
assert(new);
new->type = BGP_ENCAP_SUBTLV_TYPE_IPSEC_TA;
new->length = total;
p = new->value;
*p++ = (st->authenticator_type & 0xff00) >> 8;
*p++ = st->authenticator_type & 0xff;
memcpy(p, st->value, st->authenticator_length);
return new;
}
/* draft-rosen-idr-tunnel-encaps 2.1 */
static struct bgp_attr_encap_subtlv *
subtlv_encode_remote_endpoint(struct bgp_tea_subtlv_remote_endpoint *st)
{
struct bgp_attr_encap_subtlv *new;
uint8_t *p;
int total = (st->family == AF_INET ? 8 : 20);
assert(total <= 0xff);
new = XCALLOC(MTYPE_ENCAP_TLV,
sizeof(struct bgp_attr_encap_subtlv) + total);
assert(new);
new->type = BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT;
new->length = total;
p = new->value;
if (st->family == AF_INET) {
memcpy(p, &(st->ip_address.v4.s_addr), IPV4_MAX_BYTELEN);
p += IPV4_MAX_BYTELEN;
} else {
assert(st->family == AF_INET6);
memcpy(p, &(st->ip_address.v6.s6_addr), IPV6_MAX_BYTELEN);
p += IPV6_MAX_BYTELEN;
}
memcpy(p, &(st->as4), 4);
return new;
}
/***********************************************************************
* TUNNEL TYPE-SPECIFIC TLV ENCODE
***********************************************************************/
/*
* requires "extra" and "last" to be defined in caller
*/
#define ENC_SUBTLV(flag, function, field) \
do { \
struct bgp_attr_encap_subtlv *new; \
if (CHECK_FLAG(bet->valid_subtlvs, (flag))) { \
new = function(&bet->field); \
if (last) { \
last->next = new; \
} else { \
attr->encap_subtlvs = new; \
} \
last = new; \
} \
} while (0)
void bgp_encap_type_l2tpv3overip_to_tlv(
struct bgp_encap_type_l2tpv3_over_ip *bet, /* input structure */
struct attr *attr)
{
struct bgp_attr_encap_subtlv *last;
/* advance to last subtlv */
for (last = attr->encap_subtlvs; last && last->next; last = last->next)
;
attr->encap_tunneltype = BGP_ENCAP_TYPE_L2TPV3_OVER_IP;
assert(CHECK_FLAG(bet->valid_subtlvs, BGP_TEA_SUBTLV_ENCAP));
ENC_SUBTLV(BGP_TEA_SUBTLV_ENCAP, subtlv_encode_encap_l2tpv3_over_ip,
st_encap);
ENC_SUBTLV(BGP_TEA_SUBTLV_PROTO_TYPE, subtlv_encode_proto_type,
st_proto);
ENC_SUBTLV(BGP_TEA_SUBTLV_COLOR, subtlv_encode_color, st_color);
ENC_SUBTLV(BGP_TEA_SUBTLV_REMOTE_ENDPOINT,
subtlv_encode_remote_endpoint, st_endpoint);
}
void bgp_encap_type_gre_to_tlv(
struct bgp_encap_type_gre *bet, /* input structure */
struct attr *attr)
{
struct bgp_attr_encap_subtlv *last;
/* advance to last subtlv */
for (last = attr->encap_subtlvs; last && last->next; last = last->next)
;
attr->encap_tunneltype = BGP_ENCAP_TYPE_GRE;
ENC_SUBTLV(BGP_TEA_SUBTLV_ENCAP, subtlv_encode_encap_gre, st_encap);
ENC_SUBTLV(BGP_TEA_SUBTLV_PROTO_TYPE, subtlv_encode_proto_type,
st_proto);
ENC_SUBTLV(BGP_TEA_SUBTLV_COLOR, subtlv_encode_color, st_color);
ENC_SUBTLV(BGP_TEA_SUBTLV_REMOTE_ENDPOINT,
subtlv_encode_remote_endpoint, st_endpoint);
}
void bgp_encap_type_ip_in_ip_to_tlv(
struct bgp_encap_type_ip_in_ip *bet, /* input structure */
struct attr *attr)
{
struct bgp_attr_encap_subtlv *last;
/* advance to last subtlv */
for (last = attr->encap_subtlvs; last && last->next; last = last->next)
;
attr->encap_tunneltype = BGP_ENCAP_TYPE_IP_IN_IP;
ENC_SUBTLV(BGP_TEA_SUBTLV_PROTO_TYPE, subtlv_encode_proto_type,
st_proto);
ENC_SUBTLV(BGP_TEA_SUBTLV_COLOR, subtlv_encode_color, st_color);
ENC_SUBTLV(BGP_TEA_SUBTLV_REMOTE_ENDPOINT,
subtlv_encode_remote_endpoint, st_endpoint);
}
void bgp_encap_type_transmit_tunnel_endpoint(
struct bgp_encap_type_transmit_tunnel_endpoint
*bet, /* input structure */
struct attr *attr)
{
struct bgp_attr_encap_subtlv *last;
/* advance to last subtlv */
for (last = attr->encap_subtlvs; last && last->next; last = last->next)
;
attr->encap_tunneltype = BGP_ENCAP_TYPE_TRANSMIT_TUNNEL_ENDPOINT;
/* no subtlvs for this type */
}
void bgp_encap_type_ipsec_in_tunnel_mode_to_tlv(
struct bgp_encap_type_ipsec_in_tunnel_mode *bet, /* input structure */
struct attr *attr)
{
struct bgp_attr_encap_subtlv *last;
/* advance to last subtlv */
for (last = attr->encap_subtlvs; last && last->next; last = last->next)
;
attr->encap_tunneltype = BGP_ENCAP_TYPE_IPSEC_IN_TUNNEL_MODE;
ENC_SUBTLV(BGP_TEA_SUBTLV_IPSEC_TA, subtlv_encode_ipsec_ta,
st_ipsec_ta);
}
void bgp_encap_type_ip_in_ip_tunnel_with_ipsec_transport_mode_to_tlv(
struct bgp_encap_type_ip_in_ip_tunnel_with_ipsec_transport_mode
*bet, /* input structure */
struct attr *attr)
{
struct bgp_attr_encap_subtlv *last;
/* advance to last subtlv */
for (last = attr->encap_subtlvs; last && last->next; last = last->next)
;
attr->encap_tunneltype =
BGP_ENCAP_TYPE_IP_IN_IP_TUNNEL_WITH_IPSEC_TRANSPORT_MODE;
ENC_SUBTLV(BGP_TEA_SUBTLV_IPSEC_TA, subtlv_encode_ipsec_ta,
st_ipsec_ta);
}
void bgp_encap_type_mpls_in_ip_tunnel_with_ipsec_transport_mode_to_tlv(
struct bgp_encap_type_mpls_in_ip_tunnel_with_ipsec_transport_mode
*bet, /* input structure */
struct attr *attr)
{
struct bgp_attr_encap_subtlv *last;
/* advance to last subtlv */
for (last = attr->encap_subtlvs; last && last->next; last = last->next)
;
attr->encap_tunneltype =
BGP_ENCAP_TYPE_MPLS_IN_IP_TUNNEL_WITH_IPSEC_TRANSPORT_MODE;
ENC_SUBTLV(BGP_TEA_SUBTLV_IPSEC_TA, subtlv_encode_ipsec_ta,
st_ipsec_ta);
}
void bgp_encap_type_pbb_to_tlv(
struct bgp_encap_type_pbb *bet, /* input structure */
struct attr *attr)
{
struct bgp_attr_encap_subtlv *last;
/* advance to last subtlv */
for (last = attr->encap_subtlvs; last && last->next; last = last->next)
;
attr->encap_tunneltype = BGP_ENCAP_TYPE_PBB;
assert(CHECK_FLAG(bet->valid_subtlvs, BGP_TEA_SUBTLV_ENCAP));
ENC_SUBTLV(BGP_TEA_SUBTLV_ENCAP, subtlv_encode_encap_pbb, st_encap);
}
void bgp_encap_type_vxlan_to_tlv(
struct bgp_encap_type_vxlan *bet, /* input structure */
struct attr *attr)
{
struct bgp_attr_encap_subtlv *tlv;
uint32_t vnid;
attr->encap_tunneltype = BGP_ENCAP_TYPE_VXLAN;
if (bet == NULL || !bet->vnid)
return;
XFREE(MTYPE_ENCAP_TLV, attr->encap_subtlvs);
tlv = XCALLOC(MTYPE_ENCAP_TLV,
sizeof(struct bgp_attr_encap_subtlv) + 12);
tlv->type = 1; /* encapsulation type */
tlv->length = 12;
if (bet->vnid) {
vnid = htonl(bet->vnid | VXLAN_ENCAP_MASK_VNID_VALID);
memcpy(&tlv->value, &vnid, 4);
}
if (bet->mac_address) {
char *ptr = (char *)&tlv->value + 4;
memcpy(ptr, bet->mac_address, 6);
}
attr->encap_subtlvs = tlv;
return;
}
void bgp_encap_type_nvgre_to_tlv(
struct bgp_encap_type_nvgre *bet, /* input structure */
struct attr *attr)
{
attr->encap_tunneltype = BGP_ENCAP_TYPE_NVGRE;
}
void bgp_encap_type_mpls_to_tlv(
struct bgp_encap_type_mpls *bet, /* input structure */
struct attr *attr)
{
return; /* no encap attribute for MPLS */
}
void bgp_encap_type_mpls_in_gre_to_tlv(
struct bgp_encap_type_mpls_in_gre *bet, /* input structure */
struct attr *attr)
{
attr->encap_tunneltype = BGP_ENCAP_TYPE_MPLS_IN_GRE;
}
void bgp_encap_type_vxlan_gpe_to_tlv(
struct bgp_encap_type_vxlan_gpe *bet, /* input structure */
struct attr *attr)
{
attr->encap_tunneltype = BGP_ENCAP_TYPE_VXLAN_GPE;
}
void bgp_encap_type_mpls_in_udp_to_tlv(
struct bgp_encap_type_mpls_in_udp *bet, /* input structure */
struct attr *attr)
{
attr->encap_tunneltype = BGP_ENCAP_TYPE_MPLS_IN_UDP;
}
/***********************************************************************
* SUBTLV DECODE
***********************************************************************/
/* rfc5512 4.1 */
static int subtlv_decode_encap_l2tpv3_over_ip(
struct bgp_attr_encap_subtlv *subtlv,
struct bgp_tea_subtlv_encap_l2tpv3_over_ip *st)
{
if (subtlv->length < 4) {
zlog_debug("%s, subtlv length %d is less than 4", __func__,
subtlv->length);
return -1;
}
ptr_get_be32(subtlv->value, &st->sessionid);
st->cookie_length = subtlv->length - 4;
if (st->cookie_length > sizeof(st->cookie)) {
zlog_debug("%s, subtlv length %d is greater than %d", __func__,
st->cookie_length, (int)sizeof(st->cookie));
return -1;
}
memcpy(st->cookie, subtlv->value + 4, st->cookie_length);
return 0;
}
/* rfc5512 4.1 */
static int subtlv_decode_encap_gre(struct bgp_attr_encap_subtlv *subtlv,
struct bgp_tea_subtlv_encap_gre_key *st)
{
if (subtlv->length != 4) {
zlog_debug("%s, subtlv length %d does not equal 4", __func__,
subtlv->length);
return -1;
}
ptr_get_be32(subtlv->value, &st->gre_key);
return 0;
}
static int subtlv_decode_encap_pbb(struct bgp_attr_encap_subtlv *subtlv,
struct bgp_tea_subtlv_encap_pbb *st)
{
if (subtlv->length != 1 + 3 + 6 + 2) {
zlog_debug("%s, subtlv length %d does not equal %d", __func__,
subtlv->length, 1 + 3 + 6 + 2);
return -1;
}
if (subtlv->value[0] & 0x80) {
st->flag_isid = 1;
st->isid = (subtlv->value[1] << 16) | (subtlv->value[2] << 8)
| subtlv->value[3];
}
if (subtlv->value[0] & 0x40) {
st->flag_vid = 1;
st->vid = ((subtlv->value[10] & 0x0f) << 8) | subtlv->value[11];
}
memcpy(st->macaddr, subtlv->value + 4, 6);
return 0;
}
/* rfc5512 4.2 */
static int subtlv_decode_proto_type(struct bgp_attr_encap_subtlv *subtlv,
struct bgp_tea_subtlv_proto_type *st)
{
if (subtlv->length != 2) {
zlog_debug("%s, subtlv length %d does not equal 2", __func__,
subtlv->length);
return -1;
}
st->proto = (subtlv->value[0] << 8) | subtlv->value[1];
return 0;
}
/* rfc5512 4.3 */
static int subtlv_decode_color(struct bgp_attr_encap_subtlv *subtlv,
struct bgp_tea_subtlv_color *st)
{
if (subtlv->length != 8) {
zlog_debug("%s, subtlv length %d does not equal 8", __func__,
subtlv->length);
return -1;
}
if ((subtlv->value[0] != 0x03) || (subtlv->value[1] != 0x0b)
|| (subtlv->value[2] != 0) || (subtlv->value[3] != 0)) {
zlog_debug("%s, subtlv value 1st 4 bytes are not 0x030b0000",
__func__);
return -1;
}
ptr_get_be32(subtlv->value + 4, &st->color);
return 0;
}
/* rfc 5566 4. */
static int subtlv_decode_ipsec_ta(struct bgp_attr_encap_subtlv *subtlv,
struct bgp_tea_subtlv_ipsec_ta *st)
{
st->authenticator_length = subtlv->length - 2;
if (st->authenticator_length > sizeof(st->value)) {
zlog_debug(
"%s, authenticator length %d exceeds storage maximum %d",
__func__, st->authenticator_length,
(int)sizeof(st->value));
return -1;
}
st->authenticator_type = (subtlv->value[0] << 8) | subtlv->value[1];
memcpy(st->value, subtlv->value + 2, st->authenticator_length);
return 0;
}
/* draft-rosen-idr-tunnel-encaps 2.1 */
static int
subtlv_decode_remote_endpoint(struct bgp_attr_encap_subtlv *subtlv,
struct bgp_tea_subtlv_remote_endpoint *st)
{
int i;
if (subtlv->length != 8 && subtlv->length != 20) {
zlog_debug("%s, subtlv length %d does not equal 8 or 20",
__func__, subtlv->length);
return -1;
}
if (subtlv->length == 8) {
st->family = AF_INET;
memcpy(&st->ip_address.v4.s_addr, subtlv->value,
IPV4_MAX_BYTELEN);
} else {
st->family = AF_INET6;
memcpy(&(st->ip_address.v6.s6_addr), subtlv->value,
IPV6_MAX_BYTELEN);
}
i = subtlv->length - 4;
ptr_get_be32(subtlv->value + i, &st->as4);
return 0;
}
/***********************************************************************
* TUNNEL TYPE-SPECIFIC TLV DECODE
***********************************************************************/
int tlv_to_bgp_encap_type_l2tpv3overip(
struct bgp_attr_encap_subtlv *stlv, /* subtlv chain */
struct bgp_encap_type_l2tpv3_over_ip *bet) /* caller-allocated */
{
struct bgp_attr_encap_subtlv *st;
int rc = 0;
for (st = stlv; st; st = st->next) {
switch (st->type) {
case BGP_ENCAP_SUBTLV_TYPE_ENCAPSULATION:
rc |= subtlv_decode_encap_l2tpv3_over_ip(
st, &bet->st_encap);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_ENCAP);
break;
case BGP_ENCAP_SUBTLV_TYPE_PROTO_TYPE:
rc |= subtlv_decode_proto_type(st, &bet->st_proto);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_PROTO_TYPE);
break;
case BGP_ENCAP_SUBTLV_TYPE_COLOR:
rc |= subtlv_decode_color(st, &bet->st_color);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_COLOR);
break;
case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
rc |= subtlv_decode_remote_endpoint(st,
&bet->st_endpoint);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
break;
default:
zlog_debug("%s: unexpected subtlv type %d", __func__,
st->type);
rc |= -1;
break;
}
}
return rc;
}
int tlv_to_bgp_encap_type_gre(
struct bgp_attr_encap_subtlv *stlv, /* subtlv chain */
struct bgp_encap_type_gre *bet) /* caller-allocated */
{
struct bgp_attr_encap_subtlv *st;
int rc = 0;
for (st = stlv; st; st = st->next) {
switch (st->type) {
case BGP_ENCAP_SUBTLV_TYPE_ENCAPSULATION:
rc |= subtlv_decode_encap_gre(st, &bet->st_encap);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_ENCAP);
break;
case BGP_ENCAP_SUBTLV_TYPE_PROTO_TYPE:
rc |= subtlv_decode_proto_type(st, &bet->st_proto);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_PROTO_TYPE);
break;
case BGP_ENCAP_SUBTLV_TYPE_COLOR:
rc |= subtlv_decode_color(st, &bet->st_color);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_COLOR);
break;
case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
rc |= subtlv_decode_remote_endpoint(st,
&bet->st_endpoint);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
break;
default:
zlog_debug("%s: unexpected subtlv type %d", __func__,
st->type);
rc |= -1;
break;
}
}
return rc;
}
int tlv_to_bgp_encap_type_ip_in_ip(
struct bgp_attr_encap_subtlv *stlv, /* subtlv chain */
struct bgp_encap_type_ip_in_ip *bet) /* caller-allocated */
{
struct bgp_attr_encap_subtlv *st;
int rc = 0;
for (st = stlv; st; st = st->next) {
switch (st->type) {
case BGP_ENCAP_SUBTLV_TYPE_PROTO_TYPE:
rc |= subtlv_decode_proto_type(st, &bet->st_proto);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_PROTO_TYPE);
break;
case BGP_ENCAP_SUBTLV_TYPE_COLOR:
rc |= subtlv_decode_color(st, &bet->st_color);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_COLOR);
break;
case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
rc |= subtlv_decode_remote_endpoint(st,
&bet->st_endpoint);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
break;
default:
zlog_debug("%s: unexpected subtlv type %d", __func__,
st->type);
rc |= -1;
break;
}
}
return rc;
}
int tlv_to_bgp_encap_type_transmit_tunnel_endpoint(
struct bgp_attr_encap_subtlv *stlv,
struct bgp_encap_type_transmit_tunnel_endpoint *bet)
{
struct bgp_attr_encap_subtlv *st;
int rc = 0;
for (st = stlv; st; st = st->next) {
switch (st->type) {
case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
rc |= subtlv_decode_remote_endpoint(st,
&bet->st_endpoint);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
break;
default:
zlog_debug("%s: unexpected subtlv type %d", __func__,
st->type);
rc |= -1;
break;
}
}
return rc;
}
int tlv_to_bgp_encap_type_ipsec_in_tunnel_mode(
struct bgp_attr_encap_subtlv *stlv, /* subtlv chain */
struct bgp_encap_type_ipsec_in_tunnel_mode *bet) /* caller-allocated */
{
struct bgp_attr_encap_subtlv *st;
int rc = 0;
for (st = stlv; st; st = st->next) {
switch (st->type) {
case BGP_ENCAP_SUBTLV_TYPE_IPSEC_TA:
rc |= subtlv_decode_ipsec_ta(st, &bet->st_ipsec_ta);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_IPSEC_TA);
break;
case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
rc |= subtlv_decode_remote_endpoint(st,
&bet->st_endpoint);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
break;
default:
zlog_debug("%s: unexpected subtlv type %d", __func__,
st->type);
rc |= -1;
break;
}
}
return rc;
}
int tlv_to_bgp_encap_type_ip_in_ip_tunnel_with_ipsec_transport_mode(
struct bgp_attr_encap_subtlv *stlv,
struct bgp_encap_type_ip_in_ip_tunnel_with_ipsec_transport_mode *bet)
{
struct bgp_attr_encap_subtlv *st;
int rc = 0;
for (st = stlv; st; st = st->next) {
switch (st->type) {
case BGP_ENCAP_SUBTLV_TYPE_IPSEC_TA:
rc |= subtlv_decode_ipsec_ta(st, &bet->st_ipsec_ta);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_IPSEC_TA);
break;
case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
rc |= subtlv_decode_remote_endpoint(st,
&bet->st_endpoint);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
break;
default:
zlog_debug("%s: unexpected subtlv type %d", __func__,
st->type);
rc |= -1;
break;
}
}
return rc;
}
int tlv_to_bgp_encap_type_mpls_in_ip_tunnel_with_ipsec_transport_mode(
struct bgp_attr_encap_subtlv *stlv,
struct bgp_encap_type_mpls_in_ip_tunnel_with_ipsec_transport_mode *bet)
{
struct bgp_attr_encap_subtlv *st;
int rc = 0;
for (st = stlv; st; st = st->next) {
switch (st->type) {
case BGP_ENCAP_SUBTLV_TYPE_IPSEC_TA:
rc |= subtlv_decode_ipsec_ta(st, &bet->st_ipsec_ta);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_IPSEC_TA);
break;
case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
rc |= subtlv_decode_remote_endpoint(st,
&bet->st_endpoint);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
break;
default:
zlog_debug("%s: unexpected subtlv type %d", __func__,
st->type);
rc |= -1;
break;
}
}
return rc;
}
int tlv_to_bgp_encap_type_vxlan(struct bgp_attr_encap_subtlv *stlv,
struct bgp_encap_type_vxlan *bet)
{
struct bgp_attr_encap_subtlv *st;
int rc = 0;
for (st = stlv; st; st = st->next) {
switch (st->type) {
case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
rc |= subtlv_decode_remote_endpoint(st,
&bet->st_endpoint);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
break;
default:
zlog_debug("%s: unexpected subtlv type %d", __func__,
st->type);
rc |= -1;
break;
}
}
return rc;
}
int tlv_to_bgp_encap_type_nvgre(struct bgp_attr_encap_subtlv *stlv,
struct bgp_encap_type_nvgre *bet)
{
struct bgp_attr_encap_subtlv *st;
int rc = 0;
for (st = stlv; st; st = st->next) {
switch (st->type) {
case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
rc |= subtlv_decode_remote_endpoint(st,
&bet->st_endpoint);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
break;
default:
zlog_debug("%s: unexpected subtlv type %d", __func__,
st->type);
rc |= -1;
break;
}
}
return rc;
}
int tlv_to_bgp_encap_type_mpls(struct bgp_attr_encap_subtlv *stlv,
struct bgp_encap_type_mpls *bet)
{
struct bgp_attr_encap_subtlv *st;
int rc = 0;
for (st = stlv; st; st = st->next) {
switch (st->type) {
case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
rc |= subtlv_decode_remote_endpoint(st,
&bet->st_endpoint);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
break;
default:
zlog_debug("%s: unexpected subtlv type %d", __func__,
st->type);
rc |= -1;
break;
}
}
return rc;
}
int tlv_to_bgp_encap_type_mpls_in_gre(struct bgp_attr_encap_subtlv *stlv,
struct bgp_encap_type_mpls_in_gre *bet)
{
struct bgp_attr_encap_subtlv *st;
int rc = 0;
for (st = stlv; st; st = st->next) {
switch (st->type) {
case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
rc |= subtlv_decode_remote_endpoint(st,
&bet->st_endpoint);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
break;
default:
zlog_debug("%s: unexpected subtlv type %d", __func__,
st->type);
rc |= -1;
break;
}
}
return rc;
}
int tlv_to_bgp_encap_type_vxlan_gpe(struct bgp_attr_encap_subtlv *stlv,
struct bgp_encap_type_vxlan_gpe *bet)
{
struct bgp_attr_encap_subtlv *st;
int rc = 0;
for (st = stlv; st; st = st->next) {
switch (st->type) {
case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
rc |= subtlv_decode_remote_endpoint(st,
&bet->st_endpoint);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
break;
default:
zlog_debug("%s: unexpected subtlv type %d", __func__,
st->type);
rc |= -1;
break;
}
}
return rc;
}
int tlv_to_bgp_encap_type_mpls_in_udp(struct bgp_attr_encap_subtlv *stlv,
struct bgp_encap_type_mpls_in_udp *bet)
{
struct bgp_attr_encap_subtlv *st;
int rc = 0;
for (st = stlv; st; st = st->next) {
switch (st->type) {
case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
rc |= subtlv_decode_remote_endpoint(st,
&bet->st_endpoint);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
break;
default:
zlog_debug("%s: unexpected subtlv type %d", __func__,
st->type);
rc |= -1;
break;
}
}
return rc;
}
int tlv_to_bgp_encap_type_pbb(
struct bgp_attr_encap_subtlv *stlv, /* subtlv chain */
struct bgp_encap_type_pbb *bet) /* caller-allocated */
{
struct bgp_attr_encap_subtlv *st;
int rc = 0;
for (st = stlv; st; st = st->next) {
switch (st->type) {
case BGP_ENCAP_SUBTLV_TYPE_ENCAPSULATION:
rc |= subtlv_decode_encap_pbb(st, &bet->st_encap);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_ENCAP);
break;
case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
rc |= subtlv_decode_remote_endpoint(st,
&bet->st_endpoint);
SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
break;
default:
zlog_debug("%s: unexpected subtlv type %d", __func__,
st->type);
rc |= -1;
break;
}
}
return rc;
}
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