diff options
Diffstat (limited to 'bgpd/bgp_encap_tlv.c')
| -rw-r--r-- | bgpd/bgp_encap_tlv.c | 993 |
1 files changed, 993 insertions, 0 deletions
diff --git a/bgpd/bgp_encap_tlv.c b/bgpd/bgp_encap_tlv.c new file mode 100644 index 0000000..fde1197 --- /dev/null +++ b/bgpd/bgp_encap_tlv.c @@ -0,0 +1,993 @@ +// 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; +} |