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-rw-r--r--tests/isisd/test_common.c351
1 files changed, 351 insertions, 0 deletions
diff --git a/tests/isisd/test_common.c b/tests/isisd/test_common.c
new file mode 100644
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--- /dev/null
+++ b/tests/isisd/test_common.c
@@ -0,0 +1,351 @@
+/*
+ * Copyright (C) 2020 NetDEF, Inc.
+ * Renato Westphal
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as 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
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <zebra.h>
+
+#include "isisd/isisd.h"
+#include "isisd/isis_dynhn.h"
+#include "isisd/isis_mt.h"
+
+#include "test_common.h"
+
+struct thread_master *master;
+struct zebra_privs_t isisd_privs;
+
+int isis_sock_init(struct isis_circuit *circuit)
+{
+ return 0;
+}
+
+const struct isis_test_node *
+test_topology_find_node(const struct isis_topology *topology,
+ const char *hostname, uint8_t pseudonode_id)
+{
+ for (size_t i = 0; topology->nodes[i].hostname[0]; i++)
+ if (strmatch(hostname, topology->nodes[i].hostname)
+ && pseudonode_id == topology->nodes[i].pseudonode_id)
+ return &topology->nodes[i];
+
+ return NULL;
+}
+
+const struct isis_topology *
+test_topology_find(struct isis_topology *test_topologies, uint16_t number)
+{
+ for (size_t i = 0; test_topologies[i].number; i++)
+ if (test_topologies[i].number == number)
+ return &test_topologies[i];
+
+ return NULL;
+}
+
+static const struct isis_test_node *
+test_find_adjacency(const struct isis_test_node *tnode, const char *hostname)
+{
+ for (size_t i = 0; tnode->adjacencies[i].hostname[0]; i++) {
+ const struct isis_test_adj *tadj;
+
+ tadj = &tnode->adjacencies[i];
+ if (strmatch(hostname, tadj->hostname))
+ return tnode;
+ }
+
+ return NULL;
+}
+
+mpls_label_t test_topology_node_ldp_label(const struct isis_topology *topology,
+ struct in_addr router_id)
+{
+ for (size_t i = 0; topology->nodes[i].hostname[0]; i++) {
+ const struct isis_test_node *tnode = &topology->nodes[i];
+ struct in_addr node_router_id;
+
+ if (!tnode->router_id)
+ continue;
+
+ (void)inet_pton(AF_INET, tnode->router_id, &node_router_id);
+ if (IPV4_ADDR_SAME(&router_id, &node_router_id))
+ return (50000 + (i + 1) * 100);
+ }
+
+ return MPLS_INVALID_LABEL;
+}
+
+static struct isis_lsp *lsp_add(struct lspdb_head *lspdb,
+ struct isis_area *area, int level,
+ const uint8_t *sysid, uint8_t pseudonode_id)
+{
+ struct isis_lsp *lsp;
+ uint8_t lspid[ISIS_SYS_ID_LEN + 2];
+
+ memcpy(lspid, sysid, ISIS_SYS_ID_LEN);
+ LSP_PSEUDO_ID(lspid) = pseudonode_id;
+ LSP_FRAGMENT(lspid) = 0;
+
+ lsp = lsp_new(area, lspid, 6000, 1, 0, 0, NULL, level);
+ lsp->tlvs = isis_alloc_tlvs();
+ lspdb_add(lspdb, lsp);
+
+ return lsp;
+}
+
+static void lsp_add_ip_reach(struct isis_lsp *lsp,
+ const struct isis_test_node *tnode,
+ const char *prefix_str, uint32_t *next_sid_index)
+{
+ struct prefix prefix;
+ struct sr_prefix_cfg pcfg = {};
+ struct sr_prefix_cfg *pcfg_p = NULL;
+
+ if (str2prefix(prefix_str, &prefix) != 1) {
+ zlog_debug("%s: invalid network: %s", __func__, prefix_str);
+ return;
+ }
+
+ if (CHECK_FLAG(tnode->flags, F_ISIS_TEST_NODE_SR)) {
+ pcfg_p = &pcfg;
+
+ pcfg.sid = *next_sid_index;
+ *next_sid_index = *next_sid_index + 1;
+ pcfg.sid_type = SR_SID_VALUE_TYPE_INDEX;
+ pcfg.node_sid = true;
+ pcfg.last_hop_behavior = SR_LAST_HOP_BEHAVIOR_PHP;
+ }
+
+ if (prefix.family == AF_INET)
+ isis_tlvs_add_extended_ip_reach(lsp->tlvs,
+ (struct prefix_ipv4 *)&prefix,
+ 10, false, pcfg_p);
+ else
+ isis_tlvs_add_ipv6_reach(lsp->tlvs, ISIS_MT_IPV6_UNICAST,
+ (struct prefix_ipv6 *)&prefix, 10,
+ false, pcfg_p);
+}
+
+static void lsp_add_reach(struct isis_lsp *lsp,
+ const struct isis_test_node *tnode,
+ const uint8_t *ne_id, uint8_t pseudonode_id,
+ uint32_t metric, int family, mpls_label_t *next_label)
+{
+ uint8_t nodeid[ISIS_SYS_ID_LEN + 1];
+ uint16_t mtid;
+ struct isis_ext_subtlvs *ext = NULL;
+
+ memcpy(nodeid, ne_id, ISIS_SYS_ID_LEN);
+ LSP_PSEUDO_ID(nodeid) = pseudonode_id;
+
+ if (CHECK_FLAG(tnode->flags, F_ISIS_TEST_NODE_SR)) {
+ struct isis_adj_sid *adj_sid;
+
+ adj_sid = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(*adj_sid));
+ adj_sid->family = family;
+ SET_FLAG(adj_sid->flags, EXT_SUBTLV_LINK_ADJ_SID_VFLG);
+ SET_FLAG(adj_sid->flags, EXT_SUBTLV_LINK_ADJ_SID_LFLG);
+ if (family == AF_INET6)
+ SET_FLAG(adj_sid->flags, EXT_SUBTLV_LINK_ADJ_SID_FFLG);
+ adj_sid->weight = 0;
+ adj_sid->sid = *next_label;
+ *next_label = *next_label + 1;
+
+ ext = isis_alloc_ext_subtlvs();
+ isis_tlvs_add_adj_sid(ext, adj_sid);
+ }
+
+ mtid = (family == AF_INET) ? ISIS_MT_IPV4_UNICAST
+ : ISIS_MT_IPV6_UNICAST;
+
+ isis_tlvs_add_extended_reach(lsp->tlvs, mtid, nodeid, metric, ext);
+}
+
+static void lsp_add_router_capability(struct isis_lsp *lsp,
+ const struct isis_test_node *tnode)
+{
+ struct isis_router_cap cap = {};
+
+ if (!tnode->router_id)
+ return;
+
+ if (inet_pton(AF_INET, tnode->router_id, &cap.router_id) != 1) {
+ zlog_debug("%s: invalid router-id: %s", __func__,
+ tnode->router_id);
+ return;
+ }
+
+ if (CHECK_FLAG(tnode->flags, F_ISIS_TEST_NODE_SR)) {
+ cap.srgb.flags =
+ ISIS_SUBTLV_SRGB_FLAG_I | ISIS_SUBTLV_SRGB_FLAG_V;
+ cap.srgb.lower_bound = tnode->srgb.lower_bound
+ ? tnode->srgb.lower_bound
+ : SRGB_DFTL_LOWER_BOUND;
+ cap.srgb.range_size = tnode->srgb.range_size
+ ? tnode->srgb.range_size
+ : SRGB_DFTL_RANGE_SIZE;
+ cap.algo[0] = SR_ALGORITHM_SPF;
+ cap.algo[1] = SR_ALGORITHM_UNSET;
+ }
+
+ isis_tlvs_set_router_capability(lsp->tlvs, &cap);
+}
+
+static void lsp_add_mt_router_info(struct isis_lsp *lsp,
+ const struct isis_test_node *tnode)
+{
+ if (tnode->protocols.ipv4)
+ isis_tlvs_add_mt_router_info(lsp->tlvs, ISIS_MT_IPV4_UNICAST, 0,
+ false);
+ if (tnode->protocols.ipv6)
+ isis_tlvs_add_mt_router_info(lsp->tlvs, ISIS_MT_IPV6_UNICAST, 0,
+ false);
+}
+
+static void lsp_add_protocols_supported(struct isis_lsp *lsp,
+ const struct isis_test_node *tnode)
+{
+ struct nlpids nlpids = {};
+
+ if (!tnode->protocols.ipv4 && !tnode->protocols.ipv6)
+ return;
+
+ if (tnode->protocols.ipv4) {
+ nlpids.nlpids[nlpids.count] = NLPID_IP;
+ nlpids.count++;
+ }
+ if (tnode->protocols.ipv6) {
+ nlpids.nlpids[nlpids.count] = NLPID_IPV6;
+ nlpids.count++;
+ }
+ isis_tlvs_set_protocols_supported(lsp->tlvs, &nlpids);
+}
+
+static int topology_load_node_level(const struct isis_topology *topology,
+ const struct isis_test_node *tnode,
+ size_t tnode_index, struct isis_area *area,
+ struct lspdb_head *lspdb, int level)
+{
+ struct isis_lsp *lsp;
+ uint32_t next_sid_index = (tnode_index + 1) * 10;
+ mpls_label_t next_label = 16;
+
+ lsp = lsp_add(lspdb, area, level, tnode->sysid, tnode->pseudonode_id);
+ lsp_add_mt_router_info(lsp, tnode);
+ lsp_add_protocols_supported(lsp, tnode);
+ lsp_add_router_capability(lsp, tnode);
+
+ /* Add IP Reachability Information. */
+ for (size_t i = 0; tnode->networks[i]; i++) {
+ if (i > MAX_NETWORKS) {
+ zlog_debug(
+ "%s: node has too many networks (maximum is %u)",
+ __func__, MAX_NETWORKS);
+ return -1;
+ }
+ lsp_add_ip_reach(lsp, tnode, tnode->networks[i],
+ &next_sid_index);
+ }
+
+ /* Add IS Reachability Information. */
+ for (size_t i = 0; tnode->adjacencies[i].hostname[0]; i++) {
+ const struct isis_test_adj *tadj;
+ const struct isis_test_node *tadj_node;
+
+ if (i > MAX_ADJACENCIES) {
+ zlog_debug(
+ "%s: node has too many adjacencies (maximum is %u)",
+ __func__, MAX_ADJACENCIES);
+ return -1;
+ }
+
+ tadj = &tnode->adjacencies[i];
+ tadj_node = test_topology_find_node(topology, tadj->hostname,
+ tadj->pseudonode_id);
+ if (!tadj_node) {
+ zlog_debug(
+ "%s: node \"%s\" has an adjacency with non-existing node \"%s\"",
+ __func__, tnode->hostname, tadj->hostname);
+ return -1;
+ }
+ if (!test_find_adjacency(tadj_node, tnode->hostname)) {
+ zlog_debug(
+ "%s: node \"%s\" has an one-way adjacency with node \"%s\"",
+ __func__, tnode->hostname, tadj->hostname);
+ return -1;
+ }
+
+ if (tnode->pseudonode_id || tadj_node->pseudonode_id
+ || (tnode->protocols.ipv4 && tadj_node->protocols.ipv4))
+ lsp_add_reach(lsp, tnode, tadj_node->sysid,
+ tadj_node->pseudonode_id, tadj->metric,
+ AF_INET, &next_label);
+ if (tadj_node->pseudonode_id
+ || (tnode->protocols.ipv6 && tadj_node->protocols.ipv6))
+ lsp_add_reach(lsp, tnode, tadj_node->sysid,
+ tadj_node->pseudonode_id, tadj->metric,
+ AF_INET6, &next_label);
+ }
+
+ return 0;
+}
+
+static int topology_load_node(const struct isis_topology *topology,
+ const struct isis_test_node *tnode,
+ size_t tnode_index, struct isis_area *area,
+ struct lspdb_head lspdb[])
+{
+ int ret;
+
+ isis_dynhn_insert(area->isis, tnode->sysid, tnode->hostname,
+ tnode->level);
+
+ for (int level = IS_LEVEL_1; level <= IS_LEVEL_2; level++) {
+ if ((tnode->level & level) == 0)
+ continue;
+
+ ret = topology_load_node_level(topology, tnode, tnode_index,
+ area, &lspdb[level - 1], level);
+ if (ret != 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+int test_topology_load(const struct isis_topology *topology,
+ struct isis_area *area, struct lspdb_head lspdb[])
+{
+ for (int level = IS_LEVEL_1; level <= IS_LEVEL_2; level++)
+ lsp_db_init(&lspdb[level - 1]);
+
+ for (size_t i = 0; topology->nodes[i].hostname[0]; i++) {
+ const struct isis_test_node *tnode = &topology->nodes[i];
+ int ret;
+
+ if (i > MAX_NODES) {
+ zlog_debug(
+ "%s: topology has too many nodes (maximum is %u)",
+ __func__, MAX_NODES);
+ return -1;
+ }
+
+ ret = topology_load_node(topology, tnode, i, area, lspdb);
+ if (ret != 0)
+ return ret;
+ }
+
+ return 0;
+}
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