diff options
| -rw-r--r-- | doc/user/isisd.rst | 4 | ||||
| -rw-r--r-- | isisd/isis_spf.c | 178 |
2 files changed, 180 insertions, 2 deletions
diff --git a/doc/user/isisd.rst b/doc/user/isisd.rst index 200d00821f..1155b49eb1 100644 --- a/doc/user/isisd.rst +++ b/doc/user/isisd.rst @@ -418,8 +418,8 @@ Showing ISIS information Show topology IS-IS paths to Intermediate Systems, globally, in area (level-1) or domain (level-2). -.. index:: show ip route isis -.. clicmd:: show ip route isis +.. index:: show isis route [level-1|level-2] +.. clicmd:: show isis route [level-1|level-2] Show the ISIS routing table, as determined by the most recent SPF calculation. diff --git a/isisd/isis_spf.c b/isisd/isis_spf.c index ec10bb77e6..01affb1597 100644 --- a/isisd/isis_spf.c +++ b/isisd/isis_spf.c @@ -29,6 +29,7 @@ #include "vty.h" #include "log.h" #include "command.h" +#include "termtable.h" #include "memory.h" #include "prefix.h" #include "if.h" @@ -1520,9 +1521,186 @@ DEFUN(show_isis_topology, show_isis_topology_cmd, return CMD_SUCCESS; } +static void isis_print_routes(struct vty *vty, struct isis_spftree *spftree) +{ + struct ttable *tt; + struct route_node *rn; + const char *tree_id_text = NULL; + + if (!spftree) + return; + + switch (spftree->tree_id) { + case SPFTREE_IPV4: + tree_id_text = "IPv4"; + break; + case SPFTREE_IPV6: + tree_id_text = "IPv6"; + break; + case SPFTREE_DSTSRC: + tree_id_text = "IPv6 (dst-src routing)"; + break; + case SPFTREE_COUNT: + assert(!"isis_print_routes shouldn't be called with SPFTREE_COUNT as type"); + return; + } + + vty_out(vty, "IS-IS %s %s routing table:\n\n", + circuit_t2string(spftree->level), tree_id_text); + + /* Prepare table. */ + tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]); + ttable_add_row(tt, "Prefix|Metric|Interface|Nexthop|Label(s)"); + tt->style.cell.rpad = 2; + tt->style.corner = '+'; + ttable_restyle(tt); + ttable_rowseps(tt, 0, BOTTOM, true, '-'); + + for (rn = route_top(spftree->route_table); rn; rn = route_next(rn)) { + struct isis_route_info *rinfo; + struct isis_nexthop *nexthop; + struct listnode *node; + bool first = true; + char buf_prefix[BUFSIZ]; + + rinfo = rn->info; + if (!rinfo) + continue; + + (void)prefix2str(&rn->p, buf_prefix, sizeof(buf_prefix)); + for (ALL_LIST_ELEMENTS_RO(rinfo->nexthops, node, nexthop)) { + struct interface *ifp; + char buf_iface[BUFSIZ]; + char buf_nhop[BUFSIZ]; + char buf_labels[BUFSIZ] = {}; + + inet_ntop(nexthop->family, &nexthop->ip, buf_nhop, + sizeof(buf_nhop)); + ifp = if_lookup_by_index(nexthop->ifindex, VRF_DEFAULT); + if (ifp) + strlcpy(buf_iface, ifp->name, + sizeof(buf_iface)); + else + snprintf(buf_iface, sizeof(buf_iface), + "ifindex %u", nexthop->ifindex); + + if (nexthop->sr.label != MPLS_INVALID_LABEL) + label2str(nexthop->sr.label, buf_labels, + sizeof(buf_labels)); + else + strlcpy(buf_labels, "-", sizeof(buf_labels)); + + if (first) { + ttable_add_row(tt, "%s|%u|%s|%s|%s", buf_prefix, + rinfo->cost, buf_iface, buf_nhop, + buf_labels); + first = false; + } else + ttable_add_row(tt, "||%s|%s|%s", buf_iface, + buf_nhop, buf_labels); + } + } + + /* Dump the generated table. */ + if (tt->nrows > 1) { + char *table; + + table = ttable_dump(tt, "\n"); + vty_out(vty, "%s\n", table); + XFREE(MTYPE_TMP, table); + } + ttable_del(tt); +} + +static void show_isis_route_common(struct vty *vty, int levels, + struct isis *isis) +{ + struct listnode *node; + struct isis_area *area; + + if (!isis->area_list || isis->area_list->count == 0) + return; + + for (ALL_LIST_ELEMENTS_RO(isis->area_list, node, area)) { + vty_out(vty, "Area %s:\n", + area->area_tag ? area->area_tag : "null"); + + for (int level = ISIS_LEVEL1; level <= ISIS_LEVELS; level++) { + if ((level & levels) == 0) + continue; + + if (area->ip_circuits > 0) { + isis_print_routes( + vty, + area->spftree[SPFTREE_IPV4][level - 1]); + } + if (area->ipv6_circuits > 0) { + isis_print_routes( + vty, + area->spftree[SPFTREE_IPV6][level - 1]); + } + if (isis_area_ipv6_dstsrc_enabled(area)) { + isis_print_routes(vty, + area->spftree[SPFTREE_DSTSRC] + [level - 1]); + } + } + } +} + +DEFUN(show_isis_route, show_isis_route_cmd, + "show " PROTO_NAME + " [vrf <NAME|all>] route" +#ifndef FABRICD + " [<level-1|level-2>]" +#endif + , + SHOW_STR PROTO_HELP VRF_FULL_CMD_HELP_STR + "IS-IS routing table\n" +#ifndef FABRICD + "level-1 routes\n" + "level-2 routes\n" +#endif +) +{ + int levels; + struct isis *isis; + struct listnode *node; + const char *vrf_name = VRF_DEFAULT_NAME; + bool all_vrf = false; + int idx = 0; + + if (argv_find(argv, argc, "level-1", &idx)) + levels = ISIS_LEVEL1; + else if (argv_find(argv, argc, "level-2", &idx)) + levels = ISIS_LEVEL2; + else + levels = ISIS_LEVEL1 | ISIS_LEVEL2; + + if (!im) { + vty_out(vty, "IS-IS Routing Process not enabled\n"); + return CMD_SUCCESS; + } + ISIS_FIND_VRF_ARGS(argv, argc, idx, vrf_name, all_vrf); + + if (vrf_name) { + if (all_vrf) { + for (ALL_LIST_ELEMENTS_RO(im->isis, node, isis)) + show_isis_route_common(vty, levels, isis); + return CMD_SUCCESS; + } + isis = isis_lookup_by_vrfname(vrf_name); + if (isis != NULL) + show_isis_route_common(vty, levels, isis); + } + + return CMD_SUCCESS; +} + void isis_spf_init(void) { install_element(VIEW_NODE, &show_isis_topology_cmd); + install_element(VIEW_NODE, &show_isis_route_cmd); /* Register hook(s). */ hook_register(isis_adj_state_change_hook, spf_adj_state_change); |