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Diffstat (limited to '')
-rw-r--r-- | pceplib/pcep_msg_objects.c | 859 |
1 files changed, 859 insertions, 0 deletions
diff --git a/pceplib/pcep_msg_objects.c b/pceplib/pcep_msg_objects.c new file mode 100644 index 0000000..ce41ee9 --- /dev/null +++ b/pceplib/pcep_msg_objects.c @@ -0,0 +1,859 @@ +/* + * This file is part of the PCEPlib, a PCEP protocol library. + * + * Copyright (C) 2020 Volta Networks https://voltanet.io/ + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + * + * Author : Brady Johnson <brady@voltanet.io> + * + */ + + +/* + * This is the implementation of a High Level PCEP message object API. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <string.h> +#include <arpa/inet.h> +#include <stdarg.h> +#include <unistd.h> + +#include "pcep_msg_objects.h" +#include "pcep_msg_tlvs.h" +#include "pcep_utils_double_linked_list.h" +#include "pcep_utils_logging.h" +#include "pcep_utils_memory.h" + +/* Internal common function used to create a pcep_object and populate the header + */ +static struct pcep_object_header *pcep_obj_create_common_with_tlvs( + uint8_t obj_length, enum pcep_object_classes object_class, + enum pcep_object_types object_type, double_linked_list *tlv_list) +{ + uint8_t *buffer = pceplib_malloc(PCEPLIB_MESSAGES, obj_length); + memset(buffer, 0, obj_length); + + /* The flag_p and flag_i flags will be set externally */ + struct pcep_object_header *hdr = (struct pcep_object_header *)buffer; + hdr->object_class = object_class; + hdr->object_type = object_type; + hdr->tlv_list = tlv_list; + + return hdr; +} + +static struct pcep_object_header * +pcep_obj_create_common(uint8_t obj_length, + enum pcep_object_classes object_class, + enum pcep_object_types object_type) +{ + return pcep_obj_create_common_with_tlvs(obj_length, object_class, + object_type, NULL); +} + +struct pcep_object_open *pcep_obj_create_open(uint8_t keepalive, + uint8_t deadtimer, uint8_t sid, + double_linked_list *tlv_list) +{ + struct pcep_object_open *open = + (struct pcep_object_open *)pcep_obj_create_common_with_tlvs( + sizeof(struct pcep_object_open), PCEP_OBJ_CLASS_OPEN, + PCEP_OBJ_TYPE_OPEN, tlv_list); + + open->open_version = + PCEP_OBJECT_OPEN_VERSION; /* PCEP version. Current version is 1 + /No flags are currently defined. */ + open->open_keepalive = + keepalive; /* Maximum period of time between two consecutive + PCEP messages sent by the sender. */ + open->open_deadtimer = deadtimer; /* Specifies the amount of time before + closing the session down. */ + open->open_sid = sid; /* PCEP session number that identifies the current + session. */ + + return open; +} + +struct pcep_object_rp *pcep_obj_create_rp(uint8_t priority, bool flag_r, + bool flag_b, bool flag_s, + bool flag_of, uint32_t reqid, + double_linked_list *tlv_list) +{ + if (priority > OBJECT_RP_MAX_PRIORITY) { + pcep_log( + LOG_INFO, + "%s: Error creating RP object, invalid priority [%d], max priority [%d].", + __func__, priority, OBJECT_RP_MAX_PRIORITY); + return NULL; + } + + struct pcep_object_rp *obj = + (struct pcep_object_rp *)pcep_obj_create_common_with_tlvs( + sizeof(struct pcep_object_rp), PCEP_OBJ_CLASS_RP, + PCEP_OBJ_TYPE_RP, tlv_list); + + obj->priority = priority; + obj->flag_reoptimization = flag_r; + obj->flag_bidirectional = flag_b; + obj->flag_strict = flag_s; + obj->flag_of = flag_of; + obj->request_id = reqid; + + return obj; +} + +struct pcep_object_notify * +pcep_obj_create_notify(enum pcep_notification_types notification_type, + enum pcep_notification_values notification_value) +{ + struct pcep_object_notify *obj = + (struct pcep_object_notify *)pcep_obj_create_common( + sizeof(struct pcep_object_notify), PCEP_OBJ_CLASS_NOTF, + PCEP_OBJ_TYPE_NOTF); + + obj->notification_type = notification_type; + obj->notification_value = notification_value; + + return obj; +} + +struct pcep_object_nopath * +pcep_obj_create_nopath(uint8_t ni, bool flag_c, + enum pcep_nopath_tlv_err_codes error_code) +{ + struct pcep_object_tlv_nopath_vector *tlv = + pcep_tlv_create_nopath_vector(error_code); + double_linked_list *tlv_list = dll_initialize(); + dll_append(tlv_list, tlv); + + struct pcep_object_nopath *obj = + (struct pcep_object_nopath *)pcep_obj_create_common_with_tlvs( + sizeof(struct pcep_object_nopath), + PCEP_OBJ_CLASS_NOPATH, PCEP_OBJ_TYPE_NOPATH, tlv_list); + + obj->ni = ni; + obj->flag_c = flag_c; + obj->err_code = error_code; + + return obj; +} + +struct pcep_object_association_ipv4 * +pcep_obj_create_association_ipv4(bool r_flag, uint16_t association_type, + uint16_t association_id, struct in_addr src) +{ + struct pcep_object_association_ipv4 *obj = + (struct pcep_object_association_ipv4 *)pcep_obj_create_common( + sizeof(struct pcep_object_association_ipv4), + PCEP_OBJ_CLASS_ASSOCIATION, + PCEP_OBJ_TYPE_ASSOCIATION_IPV4); + + obj->R_flag = r_flag; + obj->association_type = association_type; + obj->association_id = association_id; + obj->src = src; + + return obj; +} +struct pcep_object_association_ipv6 * +pcep_obj_create_association_ipv6(bool r_flag, uint16_t association_type, + uint16_t association_id, struct in6_addr src) +{ + struct pcep_object_association_ipv6 *obj = + (struct pcep_object_association_ipv6 *)pcep_obj_create_common( + sizeof(struct pcep_object_association_ipv6), + PCEP_OBJ_CLASS_ASSOCIATION, + PCEP_OBJ_TYPE_ASSOCIATION_IPV6); + + obj->R_flag = r_flag; + obj->association_type = association_type; + obj->association_id = association_id; + obj->src = src; + + return obj; +} +struct pcep_object_endpoints_ipv4 * +pcep_obj_create_endpoint_ipv4(const struct in_addr *src_ipv4, + const struct in_addr *dst_ipv4) +{ + if (src_ipv4 == NULL || dst_ipv4 == NULL) { + return NULL; + } + + struct pcep_object_endpoints_ipv4 *obj = + (struct pcep_object_endpoints_ipv4 *)pcep_obj_create_common( + sizeof(struct pcep_object_endpoints_ipv4), + PCEP_OBJ_CLASS_ENDPOINTS, PCEP_OBJ_TYPE_ENDPOINT_IPV4); + + obj->src_ipv4.s_addr = src_ipv4->s_addr; + obj->dst_ipv4.s_addr = dst_ipv4->s_addr; + + return obj; +} + +struct pcep_object_endpoints_ipv6 * +pcep_obj_create_endpoint_ipv6(const struct in6_addr *src_ipv6, + const struct in6_addr *dst_ipv6) +{ + if (src_ipv6 == NULL || dst_ipv6 == NULL) { + return NULL; + } + + struct pcep_object_endpoints_ipv6 *obj = + (struct pcep_object_endpoints_ipv6 *)pcep_obj_create_common( + sizeof(struct pcep_object_endpoints_ipv6), + PCEP_OBJ_CLASS_ENDPOINTS, PCEP_OBJ_TYPE_ENDPOINT_IPV6); + + memcpy(&obj->src_ipv6, src_ipv6, sizeof(struct in6_addr)); + memcpy(&obj->dst_ipv6, dst_ipv6, sizeof(struct in6_addr)); + + return obj; +} + +struct pcep_object_bandwidth *pcep_obj_create_bandwidth(float bandwidth) +{ + struct pcep_object_bandwidth *obj = + (struct pcep_object_bandwidth *)pcep_obj_create_common( + sizeof(struct pcep_object_bandwidth), + PCEP_OBJ_CLASS_BANDWIDTH, PCEP_OBJ_TYPE_BANDWIDTH_REQ); + + obj->bandwidth = bandwidth; + + return obj; +} + +struct pcep_object_metric *pcep_obj_create_metric(enum pcep_metric_types type, + bool flag_b, bool flag_c, + float value) +{ + struct pcep_object_metric *obj = + (struct pcep_object_metric *)pcep_obj_create_common( + sizeof(struct pcep_object_metric), + PCEP_OBJ_CLASS_METRIC, PCEP_OBJ_TYPE_METRIC); + + obj->flag_b = flag_b; + obj->flag_c = flag_c; + obj->type = type; + obj->value = value; + + return obj; +} + +struct pcep_object_lspa * +pcep_obj_create_lspa(uint32_t exclude_any, uint32_t include_any, + uint32_t include_all, uint8_t setup_priority, + uint8_t holding_priority, bool flag_local_protection) +{ + struct pcep_object_lspa *obj = + (struct pcep_object_lspa *)pcep_obj_create_common( + sizeof(struct pcep_object_lspa), PCEP_OBJ_CLASS_LSPA, + PCEP_OBJ_TYPE_LSPA); + + obj->lspa_exclude_any = exclude_any; + obj->lspa_include_any = include_any; + obj->lspa_include_all = include_all; + obj->setup_priority = setup_priority; + obj->holding_priority = holding_priority; + obj->flag_local_protection = flag_local_protection; + + return obj; +} + +struct pcep_object_svec * +pcep_obj_create_svec(bool srlg, bool node, bool link, + double_linked_list *request_id_list) +{ + if (request_id_list == NULL) { + return NULL; + } + + struct pcep_object_svec *obj = + (struct pcep_object_svec *)pcep_obj_create_common( + sizeof(struct pcep_object_svec), PCEP_OBJ_CLASS_SVEC, + PCEP_OBJ_TYPE_SVEC); + + obj->flag_srlg_diverse = srlg; + obj->flag_node_diverse = node; + obj->flag_link_diverse = link; + obj->request_id_list = request_id_list; + + return obj; +} + +struct pcep_object_error * +pcep_obj_create_error(enum pcep_error_type error_type, + enum pcep_error_value error_value) +{ + struct pcep_object_error *obj = + (struct pcep_object_error *)pcep_obj_create_common( + sizeof(struct pcep_object_error), PCEP_OBJ_CLASS_ERROR, + PCEP_OBJ_TYPE_ERROR); + + obj->error_type = error_type; + obj->error_value = error_value; + + return obj; +} + +struct pcep_object_close *pcep_obj_create_close(enum pcep_close_reason reason) +{ + struct pcep_object_close *obj = + (struct pcep_object_close *)pcep_obj_create_common( + sizeof(struct pcep_object_close), PCEP_OBJ_CLASS_CLOSE, + PCEP_OBJ_TYPE_CLOSE); + + obj->reason = reason; + + return obj; +} + +struct pcep_object_srp *pcep_obj_create_srp(bool lsp_remove, + uint32_t srp_id_number, + double_linked_list *tlv_list) +{ + struct pcep_object_srp *obj = + (struct pcep_object_srp *)pcep_obj_create_common_with_tlvs( + sizeof(struct pcep_object_srp), PCEP_OBJ_CLASS_SRP, + PCEP_OBJ_TYPE_SRP, tlv_list); + + obj->flag_lsp_remove = lsp_remove; + obj->srp_id_number = srp_id_number; + + return obj; +} + +struct pcep_object_lsp * +pcep_obj_create_lsp(uint32_t plsp_id, enum pcep_lsp_operational_status status, + bool c_flag, bool a_flag, bool r_flag, bool s_flag, + bool d_flag, double_linked_list *tlv_list) +{ + /* The plsp_id is only 20 bits */ + if (plsp_id > MAX_PLSP_ID) { + pcep_log( + LOG_INFO, + "%s: pcep_obj_create_lsp invalid plsp_id [%d] max value [%d]", + __func__, plsp_id, MAX_PLSP_ID); + return NULL; + } + + /* The status is only 3 bits */ + if (status > MAX_LSP_STATUS) { + pcep_log( + LOG_INFO, + "%s: pcep_obj_create_lsp invalid status [%d] max value [%d]", + __func__, plsp_id, MAX_PLSP_ID); + return NULL; + } + + struct pcep_object_lsp *obj = + (struct pcep_object_lsp *)pcep_obj_create_common_with_tlvs( + sizeof(struct pcep_object_lsp), PCEP_OBJ_CLASS_LSP, + PCEP_OBJ_TYPE_LSP, tlv_list); + + obj->plsp_id = plsp_id; + obj->operational_status = status; + obj->flag_c = c_flag; + obj->flag_a = a_flag; + obj->flag_r = r_flag; + obj->flag_s = s_flag; + obj->flag_d = d_flag; + + return obj; +} + +struct pcep_object_vendor_info * +pcep_obj_create_vendor_info(uint32_t enterprise_number, + uint32_t enterprise_spec_info) +{ + struct pcep_object_vendor_info *obj = + (struct pcep_object_vendor_info *)pcep_obj_create_common( + sizeof(struct pcep_object_vendor_info), + PCEP_OBJ_CLASS_VENDOR_INFO, PCEP_OBJ_TYPE_VENDOR_INFO); + + obj->enterprise_number = enterprise_number; + obj->enterprise_specific_info = enterprise_spec_info; + + return obj; +} + +struct pcep_object_inter_layer * +pcep_obj_create_inter_layer(bool flag_i, bool flag_m, bool flag_t) +{ + struct pcep_object_inter_layer *obj = + (struct pcep_object_inter_layer *)pcep_obj_create_common( + sizeof(struct pcep_object_inter_layer), + PCEP_OBJ_CLASS_INTER_LAYER, PCEP_OBJ_TYPE_INTER_LAYER); + + obj->flag_i = flag_i; + obj->flag_m = flag_m; + obj->flag_t = flag_t; + + return obj; +} + +struct pcep_object_switch_layer * +pcep_obj_create_switch_layer(double_linked_list *switch_layer_rows) +{ + struct pcep_object_switch_layer *obj = + (struct pcep_object_switch_layer *)pcep_obj_create_common( + sizeof(struct pcep_object_switch_layer), + PCEP_OBJ_CLASS_SWITCH_LAYER, + PCEP_OBJ_TYPE_SWITCH_LAYER); + + obj->switch_layer_rows = switch_layer_rows; + + return obj; +} + +struct pcep_object_req_adap_cap * +pcep_obj_create_req_adap_cap(enum pcep_switching_capability sw_cap, + enum pcep_lsp_encoding_type encoding) +{ + struct pcep_object_req_adap_cap *obj = + (struct pcep_object_req_adap_cap *)pcep_obj_create_common( + sizeof(struct pcep_object_req_adap_cap), + PCEP_OBJ_CLASS_REQ_ADAP_CAP, + PCEP_OBJ_TYPE_REQ_ADAP_CAP); + + obj->switching_capability = sw_cap; + obj->encoding = encoding; + + return obj; +} + +struct pcep_object_server_indication * +pcep_obj_create_server_indication(enum pcep_switching_capability sw_cap, + enum pcep_lsp_encoding_type encoding, + double_linked_list *tlv_list) +{ + struct pcep_object_server_indication *obj = + (struct pcep_object_server_indication *) + pcep_obj_create_common_with_tlvs( + sizeof(struct pcep_object_server_indication), + PCEP_OBJ_CLASS_SERVER_IND, + PCEP_OBJ_TYPE_SERVER_IND, tlv_list); + + obj->switching_capability = sw_cap; + obj->encoding = encoding; + + return obj; +} + +struct pcep_object_objective_function * +pcep_obj_create_objective_function(uint16_t of_code, + double_linked_list *tlv_list) +{ + struct pcep_object_objective_function *obj = + (struct pcep_object_objective_function *) + pcep_obj_create_common_with_tlvs( + sizeof(struct pcep_object_objective_function), + PCEP_OBJ_CLASS_OF, PCEP_OBJ_TYPE_OF, tlv_list); + + obj->of_code = of_code; + + return obj; +} + +/* Wrap a list of ro subobjects in a structure with an object header */ +struct pcep_object_ro *pcep_obj_create_ero(double_linked_list *ero_list) +{ + struct pcep_object_ro *ero = + (struct pcep_object_ro *)pcep_obj_create_common( + sizeof(struct pcep_object_ro), PCEP_OBJ_CLASS_ERO, + PCEP_OBJ_TYPE_ERO); + ero->sub_objects = ero_list; + + return ero; +} + +/* Wrap a list of ro subobjects in a structure with an object header */ +struct pcep_object_ro *pcep_obj_create_iro(double_linked_list *iro_list) +{ + struct pcep_object_ro *iro = + (struct pcep_object_ro *)pcep_obj_create_common( + sizeof(struct pcep_object_ro), PCEP_OBJ_CLASS_IRO, + PCEP_OBJ_TYPE_IRO); + iro->sub_objects = iro_list; + + return iro; +} + +/* Wrap a list of ro subobjects in a structure with an object header */ +struct pcep_object_ro *pcep_obj_create_rro(double_linked_list *rro_list) +{ + struct pcep_object_ro *rro = + (struct pcep_object_ro *)pcep_obj_create_common( + sizeof(struct pcep_object_ro), PCEP_OBJ_CLASS_RRO, + PCEP_OBJ_TYPE_RRO); + rro->sub_objects = rro_list; + + return rro; +} + +/* + * Route Object Sub-object creation functions + */ + +static struct pcep_object_ro_subobj * +pcep_obj_create_ro_subobj_common(uint8_t subobj_size, + enum pcep_ro_subobj_types ro_subobj_type, + bool flag_subobj_loose_hop) +{ + struct pcep_object_ro_subobj *ro_subobj = + pceplib_malloc(PCEPLIB_MESSAGES, subobj_size); + memset(ro_subobj, 0, subobj_size); + ro_subobj->flag_subobj_loose_hop = flag_subobj_loose_hop; + ro_subobj->ro_subobj_type = ro_subobj_type; + + return ro_subobj; +} + +struct pcep_ro_subobj_ipv4 * +pcep_obj_create_ro_subobj_ipv4(bool loose_hop, const struct in_addr *rro_ipv4, + uint8_t prefix_length, bool flag_local_prot) +{ + if (rro_ipv4 == NULL) { + return NULL; + } + + struct pcep_ro_subobj_ipv4 *obj = + (struct pcep_ro_subobj_ipv4 *)pcep_obj_create_ro_subobj_common( + sizeof(struct pcep_ro_subobj_ipv4), RO_SUBOBJ_TYPE_IPV4, + loose_hop); + obj->ip_addr.s_addr = rro_ipv4->s_addr; + obj->prefix_length = prefix_length; + obj->flag_local_protection = flag_local_prot; + + return obj; +} + +struct pcep_ro_subobj_ipv6 * +pcep_obj_create_ro_subobj_ipv6(bool loose_hop, const struct in6_addr *rro_ipv6, + uint8_t prefix_length, bool flag_local_prot) +{ + if (rro_ipv6 == NULL) { + return NULL; + } + + struct pcep_ro_subobj_ipv6 *obj = + (struct pcep_ro_subobj_ipv6 *)pcep_obj_create_ro_subobj_common( + sizeof(struct pcep_ro_subobj_ipv6), RO_SUBOBJ_TYPE_IPV6, + loose_hop); + obj->prefix_length = prefix_length; + obj->flag_local_protection = flag_local_prot; + memcpy(&obj->ip_addr, rro_ipv6, sizeof(struct in6_addr)); + + return obj; +} + +struct pcep_ro_subobj_unnum * +pcep_obj_create_ro_subobj_unnum(struct in_addr *router_id, uint32_t if_id) +{ + if (router_id == NULL) { + return NULL; + } + + struct pcep_ro_subobj_unnum *obj = + (struct pcep_ro_subobj_unnum *)pcep_obj_create_ro_subobj_common( + sizeof(struct pcep_ro_subobj_unnum), + RO_SUBOBJ_TYPE_UNNUM, false); + obj->interface_id = if_id; + obj->router_id.s_addr = router_id->s_addr; + + return obj; +} + +struct pcep_ro_subobj_32label * +pcep_obj_create_ro_subobj_32label(bool flag_global_label, uint8_t class_type, + uint32_t label) +{ + struct pcep_ro_subobj_32label *obj = (struct pcep_ro_subobj_32label *) + pcep_obj_create_ro_subobj_common( + sizeof(struct pcep_ro_subobj_32label), + RO_SUBOBJ_TYPE_LABEL, false); + obj->class_type = class_type; + obj->flag_global_label = flag_global_label; + obj->label = label; + + return obj; +} + +struct pcep_ro_subobj_asn *pcep_obj_create_ro_subobj_asn(uint16_t asn) +{ + struct pcep_ro_subobj_asn *obj = + (struct pcep_ro_subobj_asn *)pcep_obj_create_ro_subobj_common( + sizeof(struct pcep_ro_subobj_asn), RO_SUBOBJ_TYPE_ASN, + false); + obj->asn = asn; + + return obj; +} + +/* Internal util function to create pcep_ro_subobj_sr sub-objects */ +static struct pcep_ro_subobj_sr * +pcep_obj_create_ro_subobj_sr_common(enum pcep_sr_subobj_nai nai_type, + bool loose_hop, bool f_flag, bool s_flag, + bool c_flag_in, bool m_flag_in) +{ + struct pcep_ro_subobj_sr *obj = + (struct pcep_ro_subobj_sr *)pcep_obj_create_ro_subobj_common( + sizeof(struct pcep_ro_subobj_sr), RO_SUBOBJ_TYPE_SR, + loose_hop); + + /* Flag logic according to draft-ietf-pce-segment-routing-16 */ + bool c_flag = c_flag_in; + bool m_flag = m_flag_in; + if (s_flag) { + c_flag = false; + m_flag = false; + } + + if (m_flag == false) { + c_flag = false; + } + + obj->nai_type = nai_type; + obj->flag_f = f_flag; + obj->flag_s = s_flag; + obj->flag_c = c_flag; + obj->flag_m = m_flag; + + return obj; +} + +struct pcep_ro_subobj_sr *pcep_obj_create_ro_subobj_sr_nonai(bool loose_hop, + uint32_t sid, + bool c_flag, + bool m_flag) +{ + /* According to draft-ietf-pce-segment-routing-16#section-5.2.1 + * If NT=0, the F bit MUST be 1, the S bit MUST be zero and the + * Length MUST be 8. */ + struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common( + PCEP_SR_SUBOBJ_NAI_ABSENT, loose_hop, true, false, c_flag, + m_flag); + obj->sid = sid; + + return obj; +} + +struct pcep_ro_subobj_sr * +pcep_obj_create_ro_subobj_sr_ipv4_node(bool loose_hop, bool sid_absent, + bool c_flag, bool m_flag, uint32_t sid, + struct in_addr *ipv4_node_id) +{ + if (ipv4_node_id == NULL) { + return NULL; + } + + /* According to draft-ietf-pce-segment-routing-16#section-5.2.1 + * If NT=1, the F bit MUST be zero. If the S bit is 1, the Length + * MUST be 8, otherwise the Length MUST be 12 */ + struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common( + PCEP_SR_SUBOBJ_NAI_IPV4_NODE, loose_hop, false, sid_absent, + c_flag, m_flag); + + if (!sid_absent) { + obj->sid = sid; + } + obj->nai_list = dll_initialize(); + /* Since the IP has to be stored in the list, copy it so the caller + * doesn't have any restrictions about the type of memory used + * externally for the IP. This memory will be freed with the object is + * freed. */ + struct in_addr *ipv4_node_id_copy = + pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in_addr)); + ipv4_node_id_copy->s_addr = ipv4_node_id->s_addr; + dll_append(obj->nai_list, ipv4_node_id_copy); + + return obj; +} + +struct pcep_ro_subobj_sr * +pcep_obj_create_ro_subobj_sr_ipv6_node(bool loose_hop, bool sid_absent, + bool c_flag, bool m_flag, uint32_t sid, + struct in6_addr *ipv6_node_id) +{ + if (ipv6_node_id == NULL) { + return NULL; + } + + /* According to draft-ietf-pce-segment-routing-16#section-5.2.1 + * If NT=2, the F bit MUST be zero. If the S bit is 1, the Length + * MUST be 20, otherwise the Length MUST be 24. */ + struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common( + PCEP_SR_SUBOBJ_NAI_IPV6_NODE, loose_hop, false, sid_absent, + c_flag, m_flag); + + if (!sid_absent) { + obj->sid = sid; + } + obj->nai_list = dll_initialize(); + struct in6_addr *ipv6_node_id_copy = + pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in6_addr)); + memcpy(ipv6_node_id_copy, ipv6_node_id, sizeof(struct in6_addr)); + dll_append(obj->nai_list, ipv6_node_id_copy); + + return obj; +} + +struct pcep_ro_subobj_sr *pcep_obj_create_ro_subobj_sr_ipv4_adj( + bool loose_hop, bool sid_absent, bool c_flag, bool m_flag, uint32_t sid, + struct in_addr *local_ipv4, struct in_addr *remote_ipv4) +{ + if (local_ipv4 == NULL || remote_ipv4 == NULL) { + return NULL; + } + + /* According to draft-ietf-pce-segment-routing-16#section-5.2.1 + * If NT=3, the F bit MUST be zero. If the S bit is 1, the Length + * MUST be 12, otherwise the Length MUST be 16 */ + struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common( + PCEP_SR_SUBOBJ_NAI_IPV4_ADJACENCY, loose_hop, false, sid_absent, + c_flag, m_flag); + + if (!sid_absent) { + obj->sid = sid; + } + obj->nai_list = dll_initialize(); + struct in_addr *local_ipv4_copy = + pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in_addr)); + struct in_addr *remote_ipv4_copy = + pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in_addr)); + local_ipv4_copy->s_addr = local_ipv4->s_addr; + remote_ipv4_copy->s_addr = remote_ipv4->s_addr; + dll_append(obj->nai_list, local_ipv4_copy); + dll_append(obj->nai_list, remote_ipv4_copy); + + return obj; +} + +struct pcep_ro_subobj_sr *pcep_obj_create_ro_subobj_sr_ipv6_adj( + bool loose_hop, bool sid_absent, bool c_flag, bool m_flag, uint32_t sid, + struct in6_addr *local_ipv6, struct in6_addr *remote_ipv6) +{ + if (local_ipv6 == NULL || remote_ipv6 == NULL) { + return NULL; + } + + /* According to draft-ietf-pce-segment-routing-16#section-5.2.1 + * If NT=4, the F bit MUST be zero. If the S bit is 1, the Length + * MUST be 36, otherwise the Length MUST be 40 */ + struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common( + PCEP_SR_SUBOBJ_NAI_IPV6_ADJACENCY, loose_hop, false, sid_absent, + c_flag, m_flag); + + if (!sid_absent) { + obj->sid = sid; + } + obj->nai_list = dll_initialize(); + struct in6_addr *local_ipv6_copy = + pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in6_addr)); + struct in6_addr *remote_ipv6_copy = + pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in6_addr)); + memcpy(local_ipv6_copy, local_ipv6, sizeof(struct in6_addr)); + memcpy(remote_ipv6_copy, remote_ipv6, sizeof(struct in6_addr)); + dll_append(obj->nai_list, local_ipv6_copy); + dll_append(obj->nai_list, remote_ipv6_copy); + + return obj; +} + +struct pcep_ro_subobj_sr *pcep_obj_create_ro_subobj_sr_unnumbered_ipv4_adj( + bool loose_hop, bool sid_absent, bool c_flag, bool m_flag, uint32_t sid, + uint32_t local_node_id, uint32_t local_if_id, uint32_t remote_node_id, + uint32_t remote_if_id) +{ + /* According to draft-ietf-pce-segment-routing-16#section-5.2.1 + * If NT=5, the F bit MUST be zero. If the S bit is 1, the Length + * MUST be 20, otherwise the Length MUST be 24. */ + struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common( + PCEP_SR_SUBOBJ_NAI_UNNUMBERED_IPV4_ADJACENCY, loose_hop, false, + sid_absent, c_flag, m_flag); + + if (!sid_absent) { + obj->sid = sid; + } + + obj->nai_list = dll_initialize(); + uint32_t *local_node_id_copy = + pceplib_malloc(PCEPLIB_MESSAGES, sizeof(uint32_t)); + *local_node_id_copy = local_node_id; + dll_append(obj->nai_list, local_node_id_copy); + + uint32_t *local_if_id_copy = + pceplib_malloc(PCEPLIB_MESSAGES, sizeof(uint32_t)); + *local_if_id_copy = local_if_id; + dll_append(obj->nai_list, local_if_id_copy); + + uint32_t *remote_node_id_copy = + pceplib_malloc(PCEPLIB_MESSAGES, sizeof(uint32_t)); + *remote_node_id_copy = remote_node_id; + dll_append(obj->nai_list, remote_node_id_copy); + + uint32_t *remote_if_id_copy = + pceplib_malloc(PCEPLIB_MESSAGES, sizeof(uint32_t)); + *remote_if_id_copy = remote_if_id; + dll_append(obj->nai_list, remote_if_id_copy); + + return obj; +} + +struct pcep_ro_subobj_sr *pcep_obj_create_ro_subobj_sr_linklocal_ipv6_adj( + bool loose_hop, bool sid_absent, bool c_flag, bool m_flag, uint32_t sid, + struct in6_addr *local_ipv6, uint32_t local_if_id, + struct in6_addr *remote_ipv6, uint32_t remote_if_id) +{ + if (local_ipv6 == NULL || remote_ipv6 == NULL) { + return NULL; + } + + /* According to draft-ietf-pce-segment-routing-16#section-5.2.1 + * If NT=6, the F bit MUST be zero. If the S bit is 1, the Length + * MUST be 44, otherwise the Length MUST be 48 */ + struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common( + PCEP_SR_SUBOBJ_NAI_LINK_LOCAL_IPV6_ADJACENCY, loose_hop, false, + sid_absent, c_flag, m_flag); + + if (!sid_absent) { + obj->sid = sid; + } + obj->nai_list = dll_initialize(); + struct in6_addr *local_ipv6_copy = + pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in6_addr)); + memcpy(local_ipv6_copy, local_ipv6, sizeof(struct in6_addr)); + dll_append(obj->nai_list, local_ipv6_copy); + + uint32_t *local_if_id_copy = + pceplib_malloc(PCEPLIB_MESSAGES, sizeof(uint32_t)); + *local_if_id_copy = local_if_id; + dll_append(obj->nai_list, local_if_id_copy); + + struct in6_addr *remote_ipv6_copy = + pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in6_addr)); + memcpy(remote_ipv6_copy, remote_ipv6, sizeof(struct in6_addr)); + dll_append(obj->nai_list, remote_ipv6_copy); + + uint32_t *remote_if_id_copy = + pceplib_malloc(PCEPLIB_MESSAGES, sizeof(uint32_t)); + *remote_if_id_copy = remote_if_id; + dll_append(obj->nai_list, remote_if_id_copy); + + return obj; +} |