bgpd: encap: add attribute handling
Signed-off-by: Lou Berger <lberger@labn.net>
Reviewed-by: David Lamparter <equinox@opensourcerouting.org>
diff --git a/bgpd/bgp_encap_tlv.c b/bgpd/bgp_encap_tlv.c
new file mode 100644
index 0000000..058b41e
--- /dev/null
+++ b/bgpd/bgp_encap_tlv.c
@@ -0,0 +1,874 @@
+/*
+ * Copyright 2015, LabN Consulting, L.L.C.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include <zebra.h>
+
+#include "memory.h"
+#include "prefix.h"
+#include "vty.h"
+#include "filter.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) - 1 + 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) - 1 + 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) - 1 + 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) - 1 + 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) - 1 + 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) - 1 + 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;
+}
+
+
+/***********************************************************************
+ * 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 {\
+ extra->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 attr_extra *extra = bgp_attr_extra_get(attr);
+ struct bgp_attr_encap_subtlv *last;
+
+ /* advance to last subtlv */
+ for (last = extra->encap_subtlvs; last && last->next; last = last->next);
+
+ extra->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);
+}
+
+void
+bgp_encap_type_gre_to_tlv(
+ struct bgp_encap_type_gre *bet, /* input structure */
+ struct attr *attr)
+{
+ struct attr_extra *extra = bgp_attr_extra_get(attr);
+ struct bgp_attr_encap_subtlv *last;
+
+ /* advance to last subtlv */
+ for (last = extra->encap_subtlvs; last && last->next; last = last->next);
+
+ extra->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);
+}
+
+void
+bgp_encap_type_ip_in_ip_to_tlv(
+ struct bgp_encap_type_ip_in_ip *bet, /* input structure */
+ struct attr *attr)
+{
+ struct attr_extra *extra = bgp_attr_extra_get(attr);
+ struct bgp_attr_encap_subtlv *last;
+
+ /* advance to last subtlv */
+ for (last = extra->encap_subtlvs; last && last->next; last = last->next);
+
+ extra->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);
+}
+
+void
+bgp_encap_type_transmit_tunnel_endpoint(
+ struct bgp_encap_type_transmit_tunnel_endpoint *bet, /* input structure */
+ struct attr *attr)
+{
+ struct attr_extra *extra = bgp_attr_extra_get(attr);
+ struct bgp_attr_encap_subtlv *last;
+
+ /* advance to last subtlv */
+ for (last = extra->encap_subtlvs; last && last->next; last = last->next);
+
+ extra->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 attr_extra *extra = bgp_attr_extra_get(attr);
+ struct bgp_attr_encap_subtlv *last;
+
+ /* advance to last subtlv */
+ for (last = extra->encap_subtlvs; last && last->next; last = last->next);
+
+ extra->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 attr_extra *extra = bgp_attr_extra_get(attr);
+ struct bgp_attr_encap_subtlv *last;
+
+ /* advance to last subtlv */
+ for (last = extra->encap_subtlvs; last && last->next; last = last->next);
+
+ extra->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 attr_extra *extra = bgp_attr_extra_get(attr);
+ struct bgp_attr_encap_subtlv *last;
+
+ /* advance to last subtlv */
+ for (last = extra->encap_subtlvs; last && last->next; last = last->next);
+
+ extra->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 attr_extra *extra = bgp_attr_extra_get(attr);
+ struct bgp_attr_encap_subtlv *last;
+
+ /* advance to last subtlv */
+ for (last = extra->encap_subtlvs; last && last->next; last = last->next);
+
+ extra->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 attr_extra *extra = bgp_attr_extra_get(attr);
+
+ extra->encap_tunneltype = BGP_ENCAP_TYPE_VXLAN;
+}
+
+void
+bgp_encap_type_nvgre_to_tlv(
+ struct bgp_encap_type_nvgre *bet, /* input structure */
+ struct attr *attr)
+{
+ struct attr_extra *extra = bgp_attr_extra_get(attr);
+
+ extra->encap_tunneltype = BGP_ENCAP_TYPE_NVGRE;
+}
+
+void
+bgp_encap_type_mpls_to_tlv(
+ struct bgp_encap_type_mpls *bet, /* input structure */
+ struct attr *attr)
+{
+ struct attr_extra *extra = bgp_attr_extra_get(attr);
+
+ extra->encap_tunneltype = BGP_ENCAP_TYPE_MPLS;
+}
+
+void
+bgp_encap_type_mpls_in_gre_to_tlv(
+ struct bgp_encap_type_mpls_in_gre *bet, /* input structure */
+ struct attr *attr)
+{
+ struct attr_extra *extra = bgp_attr_extra_get(attr);
+
+ extra->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)
+{
+ struct attr_extra *extra = bgp_attr_extra_get(attr);
+
+ extra->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)
+{
+ struct attr_extra *extra = bgp_attr_extra_get(attr);
+
+ extra->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;
+ }
+
+ st->sessionid = (subtlv->value[0] << 24) |
+ (subtlv->value[1] << 16) |
+ (subtlv->value[2] << 8) |
+ subtlv->value[3];
+ 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;
+ }
+ st->gre_key = (subtlv->value[0] << 24) |
+ (subtlv->value[1] << 16) |
+ (subtlv->value[2] << 8) |
+ subtlv->value[3];
+ 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;
+ }
+ st->color = (subtlv->value[4] << 24) |
+ (subtlv->value[5] << 16) |
+ (subtlv->value[6] << 8) |
+ subtlv->value[7];
+ 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;
+}
+
+/***********************************************************************
+ * 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);
+ bet->valid_subtlvs |= BGP_TEA_SUBTLV_ENCAP;
+ break;
+
+ case BGP_ENCAP_SUBTLV_TYPE_PROTO_TYPE:
+ rc |= subtlv_decode_proto_type(st, &bet->st_proto);
+ bet->valid_subtlvs |= BGP_TEA_SUBTLV_PROTO_TYPE;
+ break;
+
+ case BGP_ENCAP_SUBTLV_TYPE_COLOR:
+ rc |= subtlv_decode_color(st, &bet->st_color);
+ bet->valid_subtlvs |= BGP_TEA_SUBTLV_COLOR;
+ 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);
+ bet->valid_subtlvs |= BGP_TEA_SUBTLV_ENCAP;
+ break;
+
+ case BGP_ENCAP_SUBTLV_TYPE_PROTO_TYPE:
+ rc |= subtlv_decode_proto_type(st, &bet->st_proto);
+ bet->valid_subtlvs |= BGP_TEA_SUBTLV_PROTO_TYPE;
+ break;
+
+ case BGP_ENCAP_SUBTLV_TYPE_COLOR:
+ rc |= subtlv_decode_color(st, &bet->st_color);
+ bet->valid_subtlvs |= BGP_TEA_SUBTLV_COLOR;
+ 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);
+ bet->valid_subtlvs |= BGP_TEA_SUBTLV_PROTO_TYPE;
+ break;
+
+ case BGP_ENCAP_SUBTLV_TYPE_COLOR:
+ rc |= subtlv_decode_color(st, &bet->st_color);
+ bet->valid_subtlvs |= BGP_TEA_SUBTLV_COLOR;
+ 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) {
+ 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);
+ bet->valid_subtlvs |= BGP_TEA_SUBTLV_IPSEC_TA;
+ 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);
+ bet->valid_subtlvs |= BGP_TEA_SUBTLV_IPSEC_TA;
+ 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);
+ bet->valid_subtlvs |= BGP_TEA_SUBTLV_IPSEC_TA;
+ 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) {
+ 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) {
+ 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) {
+ 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) {
+ 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) {
+ 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) {
+ 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);
+ bet->valid_subtlvs |= BGP_TEA_SUBTLV_ENCAP;
+ break;
+
+ default:
+ zlog_debug("%s: unexpected subtlv type %d", __func__, st->type);
+ rc |= -1;
+ break;
+ }
+ }
+ return rc;
+}
+