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https://gitlab.nic.cz/labs/bird.git
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611 lines
14 KiB
C
611 lines
14 KiB
C
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/**
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* There are cli functions from ospf.c adapted for cbor.
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*/
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#include <stdlib.h>
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#include "ospf.h"
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#include "nest/cbor_shortcuts.c"
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static inline void
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show_lsa_distance_cbor(struct cbor_writer *w, struct top_hash_entry *he)
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{
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if (he->color == INSPF)
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cbor_string_int(w, "distance", he->dist);
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else
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cbor_string_string(w, "distance", "unreachable");
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}
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static inline void
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show_lsa_router_cbor(struct cbor_writer *w, struct ospf_proto *p, struct top_hash_entry *he, int verbose)
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{
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struct ospf_lsa_rt_walk rtl;
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cbor_add_string(w, "lsa_router");
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cbor_open_block(w);
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cbor_string_int(w, "router", he->lsa.rt);
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show_lsa_distance_cbor(w, he);
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cbor_add_string(w, "vlink");
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cbor_open_list(w);
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lsa_walk_rt_init(p, he, &rtl);
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while (lsa_walk_rt(&rtl))
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{
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if (rtl.type == LSART_VLNK)
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{
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cbor_open_block_with_length(w, 2);
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cbor_string_int(w, "vlink", rtl.id);
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cbor_string_int(w, "metric", rtl.metric);
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}
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}
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cbor_close_block_or_list(w);
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cbor_add_string(w, "router_metric");
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cbor_open_list(w);
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lsa_walk_rt_init(p, he, &rtl);
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while (lsa_walk_rt(&rtl))
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{
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if (rtl.type == LSART_PTP)
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{
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cbor_open_block_with_length(w, 2);
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cbor_string_int(w, "router", rtl.id);
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cbor_string_int(w, "metric", rtl.metric);
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}
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}
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cbor_close_block_or_list(w);
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cbor_add_string(w, "network");
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cbor_open_list(w);
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lsa_walk_rt_init(p, he, &rtl);
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while (lsa_walk_rt(&rtl))
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{
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if (rtl.type == LSART_NET)
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{
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if (ospf_is_v2(p))
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{
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/* In OSPFv2, we try to find network-LSA to get prefix/pxlen */
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struct top_hash_entry *net_he = ospf_hash_find_net2(p->gr, he->domain, rtl.id);
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if (net_he && (net_he->lsa.age < LSA_MAXAGE))
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{
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struct ospf_lsa_header *net_lsa = &(net_he->lsa);
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struct ospf_lsa_net *net_ln = net_he->lsa_body;
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cbor_open_block_with_length(w, 3);
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cbor_string_int(w, "network", net_lsa->id & net_ln->optx);
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cbor_string_int(w, "len", u32_masklen(net_ln->optx));
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cbor_string_int(w, "metric", rtl.metric);
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}
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else
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{
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cbor_open_block_with_length(w, 2);
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cbor_string_int(w, "network", rtl.id);
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cbor_string_int(w, "metric", rtl.metric);
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}
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}
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else
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{
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cbor_open_block_with_length(w, 3);
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cbor_string_int(w, "network", rtl.id);
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cbor_string_int(w, "nif", rtl.nif);
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cbor_string_int(w, "metric", rtl.metric);
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}
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}
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}
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cbor_close_block_or_list(w);
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if (ospf_is_v2(p) && verbose)
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{
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cbor_add_string(w, "stubnet");
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cbor_open_list(w);
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lsa_walk_rt_init(p, he, &rtl);
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while (lsa_walk_rt(&rtl))
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{
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if (rtl.type == LSART_STUB)
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{
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cbor_open_block_with_length(w, 3);
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cbor_string_int(w, "stubnet", rtl.id);
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cbor_string_int(w, "len", u32_masklen(rtl.data));
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cbor_string_int(w, "metric", rtl.metric);
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}
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}
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cbor_close_block_or_list(w);
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}
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cbor_close_block_or_list(w);
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}
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static inline void
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show_lsa_network_cbor(struct cbor_writer *w, struct top_hash_entry *he, int ospf2)
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{
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cbor_add_string(w, "lsa_network");
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cbor_open_block_with_length(w, 3);
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struct ospf_lsa_header *lsa = &(he->lsa);
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struct ospf_lsa_net *ln = he->lsa_body;
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u32 i;
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if (ospf2)
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{
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cbor_add_string(w, "ospf2");
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cbor_open_block_with_length(w, 3);
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cbor_string_int(w, "network", lsa->id & ln->optx);
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cbor_string_int(w, "optx", u32_masklen(ln->optx));
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cbor_string_int(w, "dr", lsa->rt);
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}
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else
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{
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cbor_add_string(w, "ospf");
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cbor_open_block_with_length(w, 2);
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cbor_string_int(w, "network", lsa->rt);
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cbor_string_int(w, "lsa_id", lsa->id);
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}
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show_lsa_distance_cbor(w, he);
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cbor_add_string(w, "routers");
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cbor_open_list(w);
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for (i = 0; i < lsa_net_count(lsa); i++)
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cbor_string_int(w, "router", ln->routers[i]);
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cbor_close_block_or_list(w);
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}
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static inline void
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show_lsa_sum_net_cbor(struct cbor_writer *w, struct top_hash_entry *he, int ospf2, int af)
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{
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char str[IPA_MAX_TEXT_LENGTH + 8] = "";
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net_addr net;
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u8 pxopts;
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u32 metric;
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lsa_parse_sum_net(he, ospf2, af, &net, &pxopts, &metric);
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cbor_add_string(w, "lsa_sum_net");
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cbor_open_block_with_length(w, 2);
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bsprintf(str, "%N", &net);
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cbor_string_string(w, "net", str);
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cbor_string_int(w, "metric", metric);
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}
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static inline void
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show_lsa_sum_rt_cbor(struct cbor_writer *w, struct top_hash_entry *he, int ospf2)
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{
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u32 metric;
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u32 dst_rid;
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u32 options;
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lsa_parse_sum_rt(he, ospf2, &dst_rid, &metric, &options);
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cbor_add_string(w, "lsa_sum_rt");
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cbor_open_block_with_length(w, 2);
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cbor_string_int(w, "router", dst_rid);
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cbor_string_int(w, "metric", metric);
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}
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static inline void
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show_lsa_external_cbor(struct cbor_writer *w, struct top_hash_entry *he, int ospf2, int af)
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{
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struct ospf_lsa_ext_local rt;
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char str[IPA_MAX_TEXT_LENGTH + 8] = "";
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cbor_add_string(w, "lsa_external");
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cbor_open_block(w);
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if (he->lsa_type == LSA_T_EXT)
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he->domain = 0; /* Unmark the LSA */
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lsa_parse_ext(he, ospf2, af, &rt);
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if (rt.fbit)
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{
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bsprintf(str, "%N", rt.fwaddr);
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cbor_string_string(w, "via", str);
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}
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if (rt.tag)
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cbor_string_int(w, "tag", rt.tag);
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if (he->lsa_type == LSA_T_NSSA)
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{
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cbor_string_string(w, "lsa_type", "nssa-ext");
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} else {
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cbor_string_string(w, "lsa_type", "external");
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}
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bsprintf(str, "%N", rt.net);
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cbor_string_string(w, "rt_net", str);
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if(rt.ebit)
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{
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cbor_string_int(w, "lsa_type", 2);
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}
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cbor_string_int(w, "metric", rt.metric);
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cbor_close_block_or_list(w);
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}
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static inline void
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show_lsa_prefix_cbor(struct cbor_writer *w, struct top_hash_entry *he, struct top_hash_entry *cnode, int af)
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{
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struct ospf_lsa_prefix *px = he->lsa_body;
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u32 *buf;
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int i;
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cbor_add_string(w, "lsa_prefix");
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cbor_open_block(w);
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/* We check whether given prefix-LSA is related to the current node */
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if ((px->ref_type != cnode->lsa.type_raw) || (px->ref_rt != cnode->lsa.rt))
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{
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cbor_close_block_or_list(w);
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return;
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}
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if ((px->ref_type == LSA_T_RT) && (px->ref_id != 0))
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{
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cbor_close_block_or_list(w);
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return;
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}
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if ((px->ref_type == LSA_T_NET) && (px->ref_id != cnode->lsa.id))
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{
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cbor_close_block_or_list(w);
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return;
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}
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buf = px->rest;
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cbor_add_string(w, "prexixes");
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cbor_open_list(w);
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char str[IPA_MAX_TEXT_LENGTH + 8] = "";
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for (i = 0; i < px->pxcount; i++)
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{
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net_addr net;
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u8 pxopts;
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u16 metric;
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cbor_open_block(w);
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buf = ospf3_get_prefix(buf, af, &net, &pxopts, &metric);
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if (px->ref_type == LSA_T_RT)
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{
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bsprintf(str, "%N", &net);
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cbor_string_string(w, "stubnet", str);
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cbor_string_int(w, "metric", metric);
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}
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else{
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bsprintf(str, "%N", &net);
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cbor_string_string(w, "stubnet", str);
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}
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cbor_close_block_or_list(w);
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}
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cbor_close_block_or_list(w);
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cbor_close_block_or_list(w);
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}
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static struct ospf_lsa_header *
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fake_lsa_from_prefix_lsa_cbor(struct ospf_lsa_header *dst, struct ospf_lsa_header *src,
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struct ospf_lsa_prefix *px)
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{
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dst->age = src->age;
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dst->type_raw = px->ref_type;
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dst->id = px->ref_id;
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dst->rt = px->ref_rt;
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dst->sn = src->sn;
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return dst;
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}
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static int lsa_compare_ospf3_cbor;
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static int
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lsa_compare_for_state_cbor(const void *p1, const void *p2)
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{
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struct top_hash_entry *he1 = * (struct top_hash_entry **) p1;
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struct top_hash_entry *he2 = * (struct top_hash_entry **) p2;
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struct ospf_lsa_header *lsa1 = &(he1->lsa);
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struct ospf_lsa_header *lsa2 = &(he2->lsa);
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struct ospf_lsa_header lsatmp1, lsatmp2;
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u16 lsa1_type = he1->lsa_type;
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u16 lsa2_type = he2->lsa_type;
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if (he1->domain < he2->domain)
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return -1;
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if (he1->domain > he2->domain)
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return 1;
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/* px1 or px2 assumes OSPFv3 */
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int px1 = (lsa1_type == LSA_T_PREFIX);
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int px2 = (lsa2_type == LSA_T_PREFIX);
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if (px1)
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{
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lsa1 = fake_lsa_from_prefix_lsa_cbor(&lsatmp1, lsa1, he1->lsa_body);
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lsa1_type = lsa1->type_raw; /* FIXME: handle unknown ref_type */
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}
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if (px2)
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{
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lsa2 = fake_lsa_from_prefix_lsa_cbor(&lsatmp2, lsa2, he2->lsa_body);
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lsa2_type = lsa2->type_raw;
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}
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int nt1 = (lsa1_type == LSA_T_NET);
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int nt2 = (lsa2_type == LSA_T_NET);
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if (nt1 != nt2)
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return nt1 - nt2;
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if (nt1)
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{
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/* In OSPFv3, networks are named based on ID of DR */
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if (lsa_compare_ospf3_cbor)
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{
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if (lsa1->rt < lsa2->rt)
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return -1;
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if (lsa1->rt > lsa2->rt)
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return 1;
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}
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/* For OSPFv2, this is IP of the network,
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for OSPFv3, this is interface ID */
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if (lsa1->id < lsa2->id)
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return -1;
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if (lsa1->id > lsa2->id)
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return 1;
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if (px1 != px2)
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return px1 - px2;
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return lsa1->sn - lsa2->sn;
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}
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else
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{
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if (lsa1->rt < lsa2->rt)
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return -1;
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if (lsa1->rt > lsa2->rt)
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return 1;
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if (lsa1_type < lsa2_type)
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return -1;
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if (lsa1_type > lsa2_type)
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return 1;
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if (lsa1->id < lsa2->id)
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return -1;
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if (lsa1->id > lsa2->id)
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return 1;
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if (px1 != px2)
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return px1 - px2;
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return lsa1->sn - lsa2->sn;
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}
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}
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static int
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ext_compare_for_state_cbor(const void *p1, const void *p2)
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{
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struct top_hash_entry * he1 = * (struct top_hash_entry **) p1;
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struct top_hash_entry * he2 = * (struct top_hash_entry **) p2;
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struct ospf_lsa_header *lsa1 = &(he1->lsa);
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struct ospf_lsa_header *lsa2 = &(he2->lsa);
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if (lsa1->rt < lsa2->rt)
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return -1;
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if (lsa1->rt > lsa2->rt)
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return 1;
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if (lsa1->id < lsa2->id)
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return -1;
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if (lsa1->id > lsa2->id)
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return 1;
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return lsa1->sn - lsa2->sn;
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}
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void
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ospf_sh_state_cbor(struct cbor_writer *w, struct proto *P, int verbose, int reachable)
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{
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log("in ospf_state");
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struct ospf_proto *p = (struct ospf_proto *) P;
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int ospf2 = ospf_is_v2(p);
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int af = ospf_get_af(p);
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uint i, ix, j1, jx;
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u32 last_area = 0xFFFFFFFF;
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if (p->p.proto_state != PS_UP)
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{
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cbor_string_string(w, "error", "protocol is not up");
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return;
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}
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/* We store interesting area-scoped LSAs in array hea and
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global-scoped (LSA_T_EXT) LSAs in array hex */
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uint num = p->gr->hash_entries;
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struct top_hash_entry *hea[num];
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struct top_hash_entry **hex = verbose ? alloca(num * sizeof(struct top_hash_entry *)) : NULL;
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struct top_hash_entry *he;
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struct top_hash_entry *cnode = NULL;
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j1 = jx = 0;
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WALK_SLIST(he, p->lsal)
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{
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int accept;
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if (he->lsa.age == LSA_MAXAGE)
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continue;
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switch (he->lsa_type)
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{
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case LSA_T_RT:
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case LSA_T_NET:
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accept = 1;
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break;
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case LSA_T_SUM_NET:
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case LSA_T_SUM_RT:
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case LSA_T_NSSA:
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case LSA_T_PREFIX:
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accept = verbose;
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break;
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case LSA_T_EXT:
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if (verbose)
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{
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he->domain = 1; /* Abuse domain field to mark the LSA */
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hex[jx++] = he;
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}
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/* fallthrough */
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default:
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accept = 0;
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}
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if (accept)
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hea[j1++] = he;
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}
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ASSERT(j1 <= num && jx <= num);
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lsa_compare_ospf3_cbor = !ospf2;
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qsort(hea, j1, sizeof(struct top_hash_entry *), lsa_compare_for_state_cbor);
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if (verbose)
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qsort(hex, jx, sizeof(struct top_hash_entry *), ext_compare_for_state_cbor);
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/*
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* This code is a bit tricky, we have a primary LSAs (router and
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* network) that are presented as a node, and secondary LSAs that
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* are presented as a part of a primary node. cnode represents an
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* currently opened node (whose header was presented). The LSAs are
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* sorted to get secondary LSAs just after related primary LSA (if
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* available). We present secondary LSAs only when related primary
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* LSA is opened.
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*
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* AS-external LSAs are stored separately as they might be presented
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* several times (for each area when related ASBR is opened). When
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* the node is closed, related external routes are presented. We
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* also have to take into account that in OSPFv3, there might be
|
|
* more router-LSAs and only the first should be considered as a
|
|
* primary. This is handled by not closing old router-LSA when next
|
|
* one is processed (which is not opened because there is already
|
|
* one opened).
|
|
*/
|
|
|
|
cbor_add_string(w, "areas");
|
|
cbor_open_list_with_length(w, j1);
|
|
ix = 0;
|
|
for (i = 0; i < j1; i++)
|
|
{
|
|
cbor_open_block(w);
|
|
he = hea[i];
|
|
|
|
/* If there is no opened node, we open the LSA (if appropriate) or skip to the next one */
|
|
if (!cnode)
|
|
{
|
|
if (((he->lsa_type == LSA_T_RT) || (he->lsa_type == LSA_T_NET))
|
|
&& ((he->color == INSPF) || !reachable))
|
|
{
|
|
cnode = he;
|
|
|
|
if (he->domain != last_area)
|
|
{
|
|
cbor_string_int(w, "area", he->domain);
|
|
last_area = he->domain;
|
|
ix = 0;
|
|
}
|
|
}
|
|
else
|
|
continue;
|
|
}
|
|
|
|
ASSERT(cnode && (he->domain == last_area) && (he->lsa.rt == cnode->lsa.rt));
|
|
|
|
switch (he->lsa_type)
|
|
{
|
|
case LSA_T_RT:
|
|
if (he->lsa.id == cnode->lsa.id)
|
|
show_lsa_router_cbor(w, p, he, verbose);
|
|
break;
|
|
|
|
case LSA_T_NET:
|
|
show_lsa_network_cbor(w, he, ospf2);
|
|
break;
|
|
|
|
case LSA_T_SUM_NET:
|
|
if (cnode->lsa_type == LSA_T_RT)
|
|
show_lsa_sum_net_cbor(w, he, ospf2, af);
|
|
break;
|
|
|
|
case LSA_T_SUM_RT:
|
|
if (cnode->lsa_type == LSA_T_RT)
|
|
show_lsa_sum_rt_cbor(w, he, ospf2);
|
|
break;
|
|
|
|
case LSA_T_EXT:
|
|
case LSA_T_NSSA:
|
|
show_lsa_external_cbor(w, he, ospf2, af);
|
|
break;
|
|
|
|
case LSA_T_PREFIX:
|
|
show_lsa_prefix_cbor(w, he, cnode, af);
|
|
break;
|
|
}
|
|
|
|
/* In these cases, we close the current node */
|
|
if ((i+1 == j1)
|
|
|| (hea[i+1]->domain != last_area)
|
|
|| (hea[i+1]->lsa.rt != cnode->lsa.rt)
|
|
|| (hea[i+1]->lsa_type == LSA_T_NET))
|
|
{
|
|
while ((ix < jx) && (hex[ix]->lsa.rt < cnode->lsa.rt))
|
|
ix++;
|
|
|
|
while ((ix < jx) && (hex[ix]->lsa.rt == cnode->lsa.rt))
|
|
show_lsa_external_cbor(w, hex[ix++], ospf2, af);
|
|
|
|
cnode = NULL;
|
|
}
|
|
cbor_close_block_or_list(w);
|
|
}
|
|
int hdr = 0;
|
|
u32 last_rt = 0xFFFFFFFF;
|
|
cbor_add_string(w, "asbrs");
|
|
cbor_open_list(w);
|
|
for (ix = 0; ix < jx; ix++)
|
|
{
|
|
he = hex[ix];
|
|
/* If it is still marked, we show it now. */
|
|
if (he->domain)
|
|
{
|
|
cbor_add_string(w, "asbr");
|
|
cbor_open_block(w);
|
|
|
|
he->domain = 0;
|
|
|
|
if ((he->color != INSPF) && reachable)
|
|
continue;
|
|
|
|
if (!hdr)
|
|
{
|
|
cbor_add_string(w, "other_ASBRs");
|
|
cbor_open_list_with_length(w, 0);
|
|
hdr = 1;
|
|
}
|
|
|
|
if (he->lsa.rt != last_rt)
|
|
{
|
|
cbor_string_int(w, "router", he->lsa.rt);
|
|
last_rt = he->lsa.rt;
|
|
}
|
|
|
|
show_lsa_external_cbor(w, he, ospf2, af);
|
|
cbor_close_block_or_list(w);
|
|
}
|
|
}
|
|
cbor_close_block_or_list(w);
|
|
}
|
|
|