* IS-IS TLV related routines
*
* Copyright (C) 2001,2002 Sampo Saaristo
- * Tampere University of Technology
+ * Tampere University of Technology
* Institute of Communications Engineering
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public Licenseas published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public Licenseas 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
+ * 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
#define MAX_SUBTLV_SIZE 256
/* struct for neighbor */
-struct is_neigh
-{
- struct metric metrics;
- u_char neigh_id[ISIS_SYS_ID_LEN + 1];
+struct is_neigh {
+ struct metric metrics;
+ u_char neigh_id[ISIS_SYS_ID_LEN + 1];
};
/* struct for te metric */
-struct te_is_neigh
-{
- u_char neigh_id[ISIS_SYS_ID_LEN + 1];
- u_char te_metric[3];
- u_char sub_tlvs_length;
- /* Theorical Maximum SubTLVs is 256 because the sub_tlvs_length is 8 bits */
- /* Practically, 118 bytes are necessary to store all supported TE parameters */
- /* FIXME: A pointer will use less memory, but need to be free */
- /* which is hard to fix, especially within free_tlvs() function */
- /* and malloc() / free() as a CPU cost compared to the memory usage */
- u_char sub_tlvs[MAX_SUBTLV_SIZE]; /* SUB TLVs storage */
+struct te_is_neigh {
+ u_char neigh_id[ISIS_SYS_ID_LEN + 1];
+ u_char te_metric[3];
+ u_char sub_tlvs_length;
+ /* Theorical Maximum SubTLVs is 256 because the sub_tlvs_length is 8
+ * bits */
+ /* Practically, 118 bytes are necessary to store all supported TE
+ * parameters */
+ /* FIXME: A pointer will use less memory, but need to be free */
+ /* which is hard to fix, especially within free_tlvs() function */
+ /* and malloc() / free() as a CPU cost compared to the memory usage */
+ u_char sub_tlvs[MAX_SUBTLV_SIZE]; /* SUB TLVs storage */
};
/* Decode and encode three-octet metric into host byte order integer */
-#define GET_TE_METRIC(t) \
- (((unsigned)(t)->te_metric[0]<<16) | ((t)->te_metric[1]<<8) | \
- (t)->te_metric[2])
-#define SET_TE_METRIC(t, m) \
- (((t)->te_metric[0] = (m) >> 16), \
- ((t)->te_metric[1] = (m) >> 8), \
- ((t)->te_metric[2] = (m)))
+#define GET_TE_METRIC(t) \
+ (((unsigned)(t)->te_metric[0] << 16) | ((t)->te_metric[1] << 8) \
+ | (t)->te_metric[2])
+#define SET_TE_METRIC(t, m) \
+ (((t)->te_metric[0] = (m) >> 16), ((t)->te_metric[1] = (m) >> 8), \
+ ((t)->te_metric[2] = (m)))
/* struct for es neighbors */
-struct es_neigh
-{
- struct metric metrics;
- /* approximate position of first, we use the
- * length ((uchar*)metric-1) to know all */
- u_char first_es_neigh[ISIS_SYS_ID_LEN];
-
+struct es_neigh {
+ struct metric metrics;
+ /* approximate position of first, we use the
+ * length ((uchar*)metric-1) to know all */
+ u_char first_es_neigh[ISIS_SYS_ID_LEN];
};
-struct partition_desig_level2_is
-{
- struct list *isis_system_ids;
+struct partition_desig_level2_is {
+ struct list *isis_system_ids;
};
/* struct for lan neighbors */
-struct lan_neigh
-{
- u_char LAN_addr[6];
+struct lan_neigh {
+ u_char LAN_addr[6];
};
#ifdef __SUNPRO_C
#endif
/* struct for LSP entry */
-struct lsp_entry
-{
- u_int16_t rem_lifetime;
- u_char lsp_id[ISIS_SYS_ID_LEN + 2];
- u_int32_t seq_num;
- u_int16_t checksum;
-} __attribute__ ((packed));
+struct lsp_entry {
+ u_int16_t rem_lifetime;
+ u_char lsp_id[ISIS_SYS_ID_LEN + 2];
+ u_int32_t seq_num;
+ u_int16_t checksum;
+} __attribute__((packed));
#ifdef __SUNPRO_C
#pragma pack()
#endif
/* struct for checksum */
-struct checksum
-{
- u_int16_t checksum;
+struct checksum {
+ u_int16_t checksum;
};
/* ipv4 reachability */
-struct ipv4_reachability
-{
- struct metric metrics;
- struct in_addr prefix;
- struct in_addr mask;
+struct ipv4_reachability {
+ struct metric metrics;
+ struct in_addr prefix;
+ struct in_addr mask;
};
/* te router id */
-struct te_router_id
-{
- struct in_addr id;
+struct te_router_id {
+ struct in_addr id;
};
/* te ipv4 reachability */
-struct te_ipv4_reachability
-{
- u_int32_t te_metric;
- u_char control;
- u_char prefix_start; /* since this is variable length by nature it only */
-}; /* points to an approximate location */
+struct te_ipv4_reachability {
+ u_int32_t te_metric;
+ u_char control;
+ u_char prefix_start; /* since this is variable length by nature it only
+ */
+}; /* points to an approximate location */
#define TE_IPV4_HAS_SUBTLV (0x40)
-struct idrp_info
-{
- u_char len;
- u_char *value;
+struct idrp_info {
+ u_char len;
+ u_char *value;
};
-struct ipv6_reachability
-{
- u_int32_t metric;
- u_char control_info;
- u_char prefix_len;
- u_char prefix[16];
+struct ipv6_reachability {
+ u_int32_t metric;
+ u_char control_info;
+ u_char prefix_len;
+ u_char prefix[16];
};
/* bits in control_info */
#define CTRL_INFO_SUBTLVS 0x20
-struct mt_router_info
-{
- ISIS_MT_INFO_FIELDS
- bool overload;
+struct mt_router_info {
+ ISIS_MT_INFO_FIELDS
+ bool overload;
};
/*
* Pointer to each tlv type, filled by parse_tlvs()
*/
-struct tlvs
-{
- struct checksum *checksum;
- struct hostname *hostname;
- struct nlpids *nlpids;
- struct te_router_id *router_id;
- struct list *area_addrs;
- struct list *mt_router_info;
- struct list *is_neighs;
- struct list *te_is_neighs;
- struct list *mt_is_neighs;
- struct list *es_neighs;
- struct list *lsp_entries;
- struct list *prefix_neighs;
- struct list *lan_neighs;
- struct list *ipv4_addrs;
- struct list *ipv4_int_reachs;
- struct list *ipv4_ext_reachs;
- struct list *te_ipv4_reachs;
- struct list *mt_ipv4_reachs;
- struct list *ipv6_addrs;
- struct list *ipv6_reachs;
- struct list *mt_ipv6_reachs;
- struct isis_passwd auth_info;
+struct tlvs {
+ struct checksum *checksum;
+ struct hostname *hostname;
+ struct nlpids *nlpids;
+ struct te_router_id *router_id;
+ struct list *area_addrs;
+ struct list *mt_router_info;
+ struct list *is_neighs;
+ struct list *te_is_neighs;
+ struct list *mt_is_neighs;
+ struct list *es_neighs;
+ struct list *lsp_entries;
+ struct list *prefix_neighs;
+ struct list *lan_neighs;
+ struct list *ipv4_addrs;
+ struct list *ipv4_int_reachs;
+ struct list *ipv4_ext_reachs;
+ struct list *te_ipv4_reachs;
+ struct list *mt_ipv4_reachs;
+ struct list *ipv6_addrs;
+ struct list *ipv6_reachs;
+ struct list *mt_ipv6_reachs;
+ struct isis_passwd auth_info;
};
/*
#define TLVFLAG_GRACEFUL_RESTART (1<<21)
#define TLVFLAG_MT_ROUTER_INFORMATION (1<<22)
-void init_tlvs (struct tlvs *tlvs, uint32_t expected);
-void free_tlvs (struct tlvs *tlvs);
-int parse_tlvs (char *areatag, u_char * stream, int size,
- u_int32_t * expected, u_int32_t * found, struct tlvs *tlvs,
- u_int32_t * auth_tlv_offset);
-int add_tlv (u_char, u_char, u_char *, struct stream *);
-void free_tlv (void *val);
-
-int tlv_add_mt_router_info (struct list *mt_router_info, struct stream *stream);
-int tlv_add_area_addrs (struct list *area_addrs, struct stream *stream);
-int tlv_add_is_neighs (struct list *is_neighs, struct stream *stream);
-unsigned int tlv_add_te_is_neighs (struct list *te_is_neighs, struct stream *stream, void *arg);
-int tlv_add_lan_neighs (struct list *lan_neighs, struct stream *stream);
-int tlv_add_nlpid (struct nlpids *nlpids, struct stream *stream);
-int tlv_add_checksum (struct checksum *checksum, struct stream *stream);
-int tlv_add_authinfo (u_char auth_type, u_char authlen, u_char *auth_value,
- struct stream *stream);
-int tlv_add_ip_addrs (struct list *ip_addrs, struct stream *stream);
-int tlv_add_in_addr (struct in_addr *, struct stream *stream, u_char tag);
-int tlv_add_dynamic_hostname (struct hostname *hostname,
- struct stream *stream);
-int tlv_add_lsp_entries (struct list *lsps, struct stream *stream);
-int tlv_add_ipv4_int_reachs (struct list *ipv4_reachs, struct stream *stream);
-int tlv_add_ipv4_ext_reachs (struct list *ipv4_reachs, struct stream *stream);
-unsigned int tlv_add_te_ipv4_reachs (struct list *te_ipv4_reachs, struct stream *stream, void *arg);
-int tlv_add_ipv6_addrs (struct list *ipv6_addrs, struct stream *stream);
-unsigned int tlv_add_ipv6_reachs (struct list *ipv6_reachs, struct stream *stream, void *arg);
-
-int tlv_add_padding (struct stream *stream);
+void init_tlvs(struct tlvs *tlvs, uint32_t expected);
+void free_tlvs(struct tlvs *tlvs);
+int parse_tlvs(char *areatag, u_char *stream, int size, u_int32_t *expected,
+ u_int32_t *found, struct tlvs *tlvs, u_int32_t *auth_tlv_offset);
+int add_tlv(u_char, u_char, u_char *, struct stream *);
+void free_tlv(void *val);
+
+int tlv_add_mt_router_info(struct list *mt_router_info, struct stream *stream);
+int tlv_add_area_addrs(struct list *area_addrs, struct stream *stream);
+int tlv_add_is_neighs(struct list *is_neighs, struct stream *stream);
+unsigned int tlv_add_te_is_neighs(struct list *te_is_neighs,
+ struct stream *stream, void *arg);
+int tlv_add_lan_neighs(struct list *lan_neighs, struct stream *stream);
+int tlv_add_nlpid(struct nlpids *nlpids, struct stream *stream);
+int tlv_add_checksum(struct checksum *checksum, struct stream *stream);
+int tlv_add_authinfo(u_char auth_type, u_char authlen, u_char *auth_value,
+ struct stream *stream);
+int tlv_add_ip_addrs(struct list *ip_addrs, struct stream *stream);
+int tlv_add_in_addr(struct in_addr *, struct stream *stream, u_char tag);
+int tlv_add_dynamic_hostname(struct hostname *hostname, struct stream *stream);
+int tlv_add_lsp_entries(struct list *lsps, struct stream *stream);
+int tlv_add_ipv4_int_reachs(struct list *ipv4_reachs, struct stream *stream);
+int tlv_add_ipv4_ext_reachs(struct list *ipv4_reachs, struct stream *stream);
+unsigned int tlv_add_te_ipv4_reachs(struct list *te_ipv4_reachs,
+ struct stream *stream, void *arg);
+int tlv_add_ipv6_addrs(struct list *ipv6_addrs, struct stream *stream);
+unsigned int tlv_add_ipv6_reachs(struct list *ipv6_reachs,
+ struct stream *stream, void *arg);
+
+int tlv_add_padding(struct stream *stream);
#endif /* _ZEBRA_ISIS_TLV_H */
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