#include "log.h"
#include "linklist.h"
#include "vty.h"
+#include "lib_errors.h"
#include "eigrpd/eigrp_structs.h"
#include "eigrpd/eigrpd.h"
#include "eigrpd/eigrp_fsm.h"
#include "eigrpd/eigrp_memory.h"
-static int eigrp_prefix_entry_cmp(struct eigrp_prefix_entry *,
- struct eigrp_prefix_entry *);
-static void eigrp_prefix_entry_del(struct eigrp_prefix_entry *);
-static int eigrp_neighbor_entry_cmp(struct eigrp_neighbor_entry *,
- struct eigrp_neighbor_entry *);
+static int eigrp_nexthop_entry_cmp(struct eigrp_nexthop_entry *,
+ struct eigrp_nexthop_entry *);
/*
* Returns linkedlist used as topology table
* del - assigned function executed before deleting topology node by list
* function
*/
-struct list *eigrp_topology_new()
+struct route_table *eigrp_topology_new()
{
- struct list *new = list_new();
- new->cmp = (int (*)(void *, void *))eigrp_prefix_entry_cmp;
- new->del = (void (*)(void *))eigrp_prefix_entry_del;
-
- return new;
-}
-
-/*
- * Topology node comparison
- */
-
-static int eigrp_prefix_entry_cmp(struct eigrp_prefix_entry *node1,
- struct eigrp_prefix_entry *node2)
-{
- if (node1->af == AF_INET) {
- if (node2->af == AF_INET) {
- if (node1->destination_ipv4->prefix.s_addr
- < node2->destination_ipv4->prefix.s_addr) {
- return -1; // if it belong above node2
- } else {
- if (node1->destination_ipv4->prefix.s_addr
- > node2->destination_ipv4->prefix.s_addr) {
- return 1; // if it belongs under node2
- } else {
- return 0; // same value... ERROR...in
- // case of adding same prefix
- // again
- }
- }
- } else {
- return 1;
- }
- } else { // TODO check if the prefix dont exists
- return 1; // add to end
- }
-}
-
-/*
- * Topology node delete
- */
-
-static void eigrp_prefix_entry_del(struct eigrp_prefix_entry *node)
-{
- list_delete_all_node(node->entries);
- list_free(node->entries);
+ return route_table_init();
}
/*
sizeof(struct eigrp_prefix_entry));
new->entries = list_new();
new->rij = list_new();
- new->entries->cmp = (int (*)(void *, void *))eigrp_neighbor_entry_cmp;
+ new->entries->cmp = (int (*)(void *, void *))eigrp_nexthop_entry_cmp;
new->distance = new->fdistance = new->rdistance = EIGRP_MAX_METRIC;
- new->destination_ipv4 = NULL;
- new->destination_ipv6 = NULL;
+ new->destination = NULL;
return new;
}
/*
* Topology entry comparison
*/
-static int eigrp_neighbor_entry_cmp(struct eigrp_neighbor_entry *entry1,
- struct eigrp_neighbor_entry *entry2)
+static int eigrp_nexthop_entry_cmp(struct eigrp_nexthop_entry *entry1,
+ struct eigrp_nexthop_entry *entry2)
{
- if (entry1->distance
- < entry2->distance) // parameter used in list_add_sort ()
- return -1; // actually set to sort by distance
+ if (entry1->distance < entry2->distance)
+ return -1;
if (entry1->distance > entry2->distance)
return 1;
* Returns new topology entry
*/
-struct eigrp_neighbor_entry *eigrp_neighbor_entry_new()
+struct eigrp_nexthop_entry *eigrp_nexthop_entry_new()
{
- struct eigrp_neighbor_entry *new;
+ struct eigrp_nexthop_entry *new;
- new = XCALLOC(MTYPE_EIGRP_NEIGHBOR_ENTRY,
- sizeof(struct eigrp_neighbor_entry));
+ new = XCALLOC(MTYPE_EIGRP_NEXTHOP_ENTRY,
+ sizeof(struct eigrp_nexthop_entry));
new->reported_distance = EIGRP_MAX_METRIC;
new->distance = EIGRP_MAX_METRIC;
/*
* Freeing topology table list
*/
-void eigrp_topology_free(struct list *list)
+void eigrp_topology_free(struct route_table *table)
{
- list_free(list);
+ eigrp_topology_delete_all(table);
+ route_table_finish(table);
}
/*
- * Deleting all topology nodes in table
+ * Adding topology node to topology table
*/
-void eigrp_topology_cleanup(struct list *topology)
+void eigrp_prefix_entry_add(struct route_table *topology,
+ struct eigrp_prefix_entry *pe)
{
- assert(topology);
+ struct route_node *rn;
- eigrp_topology_delete_all(topology);
-}
+ rn = route_node_get(topology, pe->destination);
+ if (rn->info) {
+ if (IS_DEBUG_EIGRP_EVENT) {
+ char buf[PREFIX_STRLEN];
-/*
- * Adding topology node to topology table
- */
-void eigrp_prefix_entry_add(struct list *topology,
- struct eigrp_prefix_entry *node)
-{
- if (listnode_lookup(topology, node) == NULL) {
- listnode_add_sort(topology, node);
+ zlog_debug(
+ "%s: %s Should we have found this entry in the topo table?",
+ __PRETTY_FUNCTION__,
+ prefix2str(pe->destination, buf, sizeof(buf)));
+ }
}
+
+ rn->info = pe;
+ route_lock_node(rn);
}
/*
* Adding topology entry to topology node
*/
-void eigrp_neighbor_entry_add(struct eigrp_prefix_entry *node,
- struct eigrp_neighbor_entry *entry)
+void eigrp_nexthop_entry_add(struct eigrp_prefix_entry *node,
+ struct eigrp_nexthop_entry *entry)
{
struct list *l = list_new();
listnode_add_sort(node->entries, entry);
entry->prefix = node;
- eigrp_zebra_route_add(node->destination_ipv4, l);
+ eigrp_zebra_route_add(node->destination, l);
}
- list_delete(l);
+ list_delete(&l);
}
/*
* Deleting topology node from topology table
*/
-void eigrp_prefix_entry_delete(struct list *topology,
- struct eigrp_prefix_entry *node)
+void eigrp_prefix_entry_delete(struct route_table *table,
+ struct eigrp_prefix_entry *pe)
{
struct eigrp *eigrp = eigrp_lookup();
+ struct eigrp_nexthop_entry *ne;
+ struct listnode *node, *nnode;
+ struct route_node *rn;
+
+ if (!eigrp)
+ return;
+
+ rn = route_node_lookup(table, pe->destination);
+ if (!rn)
+ return;
/*
* Emergency removal of the node from this list.
* Whatever it is.
*/
- listnode_delete(eigrp->topology_changes_internalIPV4, node);
-
- if (listnode_lookup(topology, node) != NULL) {
- list_delete_all_node(node->entries);
- list_free(node->entries);
- list_free(node->rij);
- listnode_delete(topology, node);
- eigrp_zebra_route_delete(node->destination_ipv4);
- XFREE(MTYPE_EIGRP_PREFIX_ENTRY, node);
- }
+ listnode_delete(eigrp->topology_changes_internalIPV4, pe);
+
+ for (ALL_LIST_ELEMENTS(pe->entries, node, nnode, ne))
+ eigrp_nexthop_entry_delete(pe, ne);
+ list_delete(&pe->entries);
+ list_delete(&pe->rij);
+ eigrp_zebra_route_delete(pe->destination);
+ prefix_free(pe->destination);
+
+ rn->info = NULL;
+ route_unlock_node(rn); // Lookup above
+ route_unlock_node(rn); // Initial creation
+ XFREE(MTYPE_EIGRP_PREFIX_ENTRY, pe);
}
/*
* Deleting topology entry from topology node
*/
-void eigrp_neighbor_entry_delete(struct eigrp_prefix_entry *node,
- struct eigrp_neighbor_entry *entry)
+void eigrp_nexthop_entry_delete(struct eigrp_prefix_entry *node,
+ struct eigrp_nexthop_entry *entry)
{
if (listnode_lookup(node->entries, entry) != NULL) {
listnode_delete(node->entries, entry);
- eigrp_zebra_route_delete(node->destination_ipv4);
- XFREE(MTYPE_EIGRP_NEIGHBOR_ENTRY, entry);
+ eigrp_zebra_route_delete(node->destination);
+ XFREE(MTYPE_EIGRP_NEXTHOP_ENTRY, entry);
}
}
/*
* Deleting all nodes from topology table
*/
-void eigrp_topology_delete_all(struct list *topology)
+void eigrp_topology_delete_all(struct route_table *topology)
{
- list_delete_all_node(topology);
-}
+ struct route_node *rn;
+ struct eigrp_prefix_entry *pe;
-/*
- * Return 0 if topology is not empty
- * otherwise return 1
- */
-unsigned int eigrp_topology_table_isempty(struct list *topology)
-{
- if (topology->count)
- return 1;
- else
- return 0;
+ for (rn = route_top(topology); rn; rn = route_next(rn)) {
+ pe = rn->info;
+
+ if (!pe)
+ continue;
+
+ eigrp_prefix_entry_delete(topology, pe);
+ }
}
struct eigrp_prefix_entry *
-eigrp_topology_table_lookup_ipv4(struct list *topology_table,
- struct prefix_ipv4 *address)
+eigrp_topology_table_lookup_ipv4(struct route_table *table,
+ struct prefix *address)
{
- struct eigrp_prefix_entry *data;
- struct listnode *node;
- for (ALL_LIST_ELEMENTS_RO(topology_table, node, data)) {
- if ((data->af == AF_INET)
- && (data->destination_ipv4->prefix.s_addr
- == address->prefix.s_addr)
- && (data->destination_ipv4->prefixlen
- == address->prefixlen))
- return data;
- }
+ struct eigrp_prefix_entry *pe;
+ struct route_node *rn;
- return NULL;
+ rn = route_node_lookup(table, address);
+ if (!rn)
+ return NULL;
+
+ pe = rn->info;
+
+ route_unlock_node(rn);
+
+ return pe;
}
/*
struct list *eigrp_topology_get_successor(struct eigrp_prefix_entry *table_node)
{
struct list *successors = list_new();
- struct eigrp_neighbor_entry *data;
+ struct eigrp_nexthop_entry *data;
struct listnode *node1, *node2;
for (ALL_LIST_ELEMENTS(table_node->entries, node1, node2, data)) {
- if (data->flags & EIGRP_NEIGHBOR_ENTRY_SUCCESSOR_FLAG) {
+ if (data->flags & EIGRP_NEXTHOP_ENTRY_SUCCESSOR_FLAG) {
listnode_add(successors, data);
}
}
* If we have no successors return NULL
*/
if (!successors->count) {
- list_delete(successors);
+ list_delete(&successors);
successors = NULL;
}
return successors;
}
-struct eigrp_neighbor_entry *
+struct eigrp_nexthop_entry *
eigrp_prefix_entry_lookup(struct list *entries, struct eigrp_neighbor *nbr)
{
- struct eigrp_neighbor_entry *data;
+ struct eigrp_nexthop_entry *data;
struct listnode *node, *nnode;
for (ALL_LIST_ELEMENTS(entries, node, nnode, data)) {
if (data->adv_router == nbr) {
struct list *eigrp_neighbor_prefixes_lookup(struct eigrp *eigrp,
struct eigrp_neighbor *nbr)
{
- struct listnode *node1, *node11, *node2, *node22;
- struct eigrp_prefix_entry *prefix;
- struct eigrp_neighbor_entry *entry;
+ struct listnode *node2, *node22;
+ struct eigrp_nexthop_entry *entry;
+ struct eigrp_prefix_entry *pe;
+ struct route_node *rn;
/* create new empty list for prefixes storage */
struct list *prefixes = list_new();
/* iterate over all prefixes in topology table */
- for (ALL_LIST_ELEMENTS(eigrp->topology_table, node1, node11, prefix)) {
+ for (rn = route_top(eigrp->topology_table); rn; rn = route_next(rn)) {
+ if (!rn->info)
+ continue;
+ pe = rn->info;
/* iterate over all neighbor entry in prefix */
- for (ALL_LIST_ELEMENTS(prefix->entries, node2, node22, entry)) {
+ for (ALL_LIST_ELEMENTS(pe->entries, node2, node22, entry)) {
/* if entry is from specified neighbor, add to list */
if (entry->adv_router == nbr) {
- listnode_add(prefixes, prefix);
+ listnode_add(prefixes, pe);
}
}
}
return prefixes;
}
-enum metric_change eigrp_topology_update_distance(struct eigrp_fsm_action_message *msg)
+enum metric_change
+eigrp_topology_update_distance(struct eigrp_fsm_action_message *msg)
{
struct eigrp *eigrp = msg->eigrp;
struct eigrp_prefix_entry *prefix = msg->prefix;
- struct eigrp_neighbor_entry *entry = msg->entry;
+ struct eigrp_nexthop_entry *entry = msg->entry;
enum metric_change change = METRIC_SAME;
+ uint32_t new_reported_distance;
+
assert(entry);
- struct TLV_IPv4_External_type *ext_data = NULL;
- struct TLV_IPv4_Internal_type *int_data = NULL;
- if (msg->data_type == EIGRP_TLV_IPv4_INT) {
- u_int32_t new_reported_distance;
+ switch (msg->data_type) {
+ case EIGRP_CONNECTED:
+ if (prefix->nt == EIGRP_TOPOLOGY_TYPE_CONNECTED)
+ return change;
- int_data = msg->data.ipv4_int_type;
- if (eigrp_metrics_is_same(int_data->metric,
+ change = METRIC_DECREASE;
+ break;
+ case EIGRP_INT:
+ if (prefix->nt == EIGRP_TOPOLOGY_TYPE_CONNECTED) {
+ change = METRIC_INCREASE;
+ goto distance_done;
+ }
+ if (eigrp_metrics_is_same(msg->metrics,
entry->reported_metric)) {
return change; // No change
}
- new_reported_distance = eigrp_calculate_metrics(eigrp,
- int_data->metric);
+ new_reported_distance =
+ eigrp_calculate_metrics(eigrp, msg->metrics);
- if (entry->reported_distance < new_reported_distance)
+ if (entry->reported_distance < new_reported_distance) {
change = METRIC_INCREASE;
- else
+ goto distance_done;
+ } else
change = METRIC_DECREASE;
- entry->reported_metric = int_data->metric;
+ entry->reported_metric = msg->metrics;
entry->reported_distance = new_reported_distance;
- eigrp_calculate_metrics(eigrp, int_data->metric);
+ eigrp_calculate_metrics(eigrp, msg->metrics);
entry->distance = eigrp_calculate_total_metrics(eigrp, entry);
- } else {
- ext_data = msg->data.ipv4_ext_data;
- if (eigrp_metrics_is_same(ext_data->metric,
- entry->reported_metric))
- return change;
+ break;
+ case EIGRP_EXT:
+ if (prefix->nt == EIGRP_TOPOLOGY_TYPE_REMOTE_EXTERNAL) {
+ if (eigrp_metrics_is_same(msg->metrics,
+ entry->reported_metric))
+ return change;
+ } else {
+ change = METRIC_INCREASE;
+ goto distance_done;
+ }
+ break;
+ default:
+ flog_err(EC_LIB_DEVELOPMENT, "%s: Please implement handler",
+ __PRETTY_FUNCTION__);
+ break;
}
+distance_done:
/*
* Move to correct position in list according to new distance
*/
void eigrp_topology_update_all_node_flags(struct eigrp *eigrp)
{
- struct list *table = eigrp->topology_table;
- struct eigrp_prefix_entry *data;
- struct listnode *node, *nnode;
- for (ALL_LIST_ELEMENTS(table, node, nnode, data)) {
- eigrp_topology_update_node_flags(data);
+ struct eigrp_prefix_entry *pe;
+ struct route_node *rn;
+
+ if (!eigrp)
+ return;
+
+ for (rn = route_top(eigrp->topology_table); rn; rn = route_next(rn)) {
+ pe = rn->info;
+
+ if (!pe)
+ continue;
+
+ eigrp_topology_update_node_flags(pe);
}
}
void eigrp_topology_update_node_flags(struct eigrp_prefix_entry *dest)
{
struct listnode *node;
- struct eigrp_neighbor_entry *entry;
+ struct eigrp_nexthop_entry *entry;
struct eigrp *eigrp = eigrp_lookup();
+ assert(eigrp);
+
for (ALL_LIST_ELEMENTS_RO(dest->entries, node, entry)) {
- if (((uint64_t)entry->distance
- <= (uint64_t)(dest->distance * eigrp->variance))
- && entry->distance != EIGRP_MAX_METRIC) // is successor
- {
- entry->flags |= EIGRP_NEIGHBOR_ENTRY_SUCCESSOR_FLAG;
- entry->flags &= ~EIGRP_NEIGHBOR_ENTRY_FSUCCESSOR_FLAG;
- } else if (entry->reported_distance
- < dest->fdistance) // is feasible successor
- {
- entry->flags |= EIGRP_NEIGHBOR_ENTRY_FSUCCESSOR_FLAG;
- entry->flags &= ~EIGRP_NEIGHBOR_ENTRY_SUCCESSOR_FLAG;
+ if (entry->reported_distance < dest->fdistance) {
+ // is feasible successor, can be successor
+ if (((uint64_t)entry->distance
+ <= (uint64_t)dest->distance
+ * (uint64_t)eigrp->variance)
+ && entry->distance != EIGRP_MAX_METRIC) {
+ // is successor
+ entry->flags |=
+ EIGRP_NEXTHOP_ENTRY_SUCCESSOR_FLAG;
+ entry->flags &=
+ ~EIGRP_NEXTHOP_ENTRY_FSUCCESSOR_FLAG;
+ } else {
+ // is feasible successor only
+ entry->flags |=
+ EIGRP_NEXTHOP_ENTRY_FSUCCESSOR_FLAG;
+ entry->flags &=
+ ~EIGRP_NEXTHOP_ENTRY_SUCCESSOR_FLAG;
+ }
} else {
- entry->flags &= ~EIGRP_NEIGHBOR_ENTRY_FSUCCESSOR_FLAG;
- entry->flags &= ~EIGRP_NEIGHBOR_ENTRY_SUCCESSOR_FLAG;
+ entry->flags &= ~EIGRP_NEXTHOP_ENTRY_FSUCCESSOR_FLAG;
+ entry->flags &= ~EIGRP_NEXTHOP_ENTRY_SUCCESSOR_FLAG;
}
}
}
void eigrp_update_routing_table(struct eigrp_prefix_entry *prefix)
{
struct eigrp *eigrp = eigrp_lookup();
- struct list *successors =
- eigrp_topology_get_successor_max(prefix, eigrp->max_paths);
+ struct list *successors;
struct listnode *node;
- struct eigrp_neighbor_entry *entry;
+ struct eigrp_nexthop_entry *entry;
+
+ if (!eigrp)
+ return;
+
+ successors = eigrp_topology_get_successor_max(prefix, eigrp->max_paths);
if (successors) {
- eigrp_zebra_route_add(prefix->destination_ipv4, successors);
+ eigrp_zebra_route_add(prefix->destination, successors);
for (ALL_LIST_ELEMENTS_RO(successors, node, entry))
- entry->flags |= EIGRP_NEIGHBOR_ENTRY_INTABLE_FLAG;
+ entry->flags |= EIGRP_NEXTHOP_ENTRY_INTABLE_FLAG;
- list_delete(successors);
+ list_delete(&successors);
} else {
- eigrp_zebra_route_delete(prefix->destination_ipv4);
+ eigrp_zebra_route_delete(prefix->destination);
for (ALL_LIST_ELEMENTS_RO(prefix->entries, node, entry))
- entry->flags &= ~EIGRP_NEIGHBOR_ENTRY_INTABLE_FLAG;
+ entry->flags &= ~EIGRP_NEXTHOP_ENTRY_INTABLE_FLAG;
}
}
void eigrp_topology_neighbor_down(struct eigrp *eigrp,
struct eigrp_neighbor *nbr)
{
- struct listnode *node1, *node11, *node2, *node22;
- struct eigrp_prefix_entry *prefix;
- struct eigrp_neighbor_entry *entry;
-
- for (ALL_LIST_ELEMENTS(eigrp->topology_table, node1, node11, prefix)) {
- for (ALL_LIST_ELEMENTS(prefix->entries, node2, node22, entry)) {
- if (entry->adv_router == nbr) {
- struct eigrp_fsm_action_message *msg;
- msg = XCALLOC(MTYPE_EIGRP_FSM_MSG,
- sizeof(struct
- eigrp_fsm_action_message));
- struct TLV_IPv4_Internal_type *tlv =
- eigrp_IPv4_InternalTLV_new();
- tlv->metric.delay = EIGRP_MAX_METRIC;
- msg->packet_type = EIGRP_OPC_UPDATE;
- msg->eigrp = eigrp;
- msg->data_type = EIGRP_TLV_IPv4_INT;
- msg->adv_router = nbr;
- msg->data.ipv4_int_type = tlv;
- msg->entry = entry;
- msg->prefix = prefix;
- int event = eigrp_get_fsm_event(msg);
- eigrp_fsm_event(msg, event);
- }
+ struct listnode *node2, *node22;
+ struct eigrp_prefix_entry *pe;
+ struct eigrp_nexthop_entry *entry;
+ struct route_node *rn;
+
+ for (rn = route_top(eigrp->topology_table); rn; rn = route_next(rn)) {
+ pe = rn->info;
+
+ if (!pe)
+ continue;
+
+ for (ALL_LIST_ELEMENTS(pe->entries, node2, node22, entry)) {
+ struct eigrp_fsm_action_message msg;
+
+ if (entry->adv_router != nbr)
+ continue;
+
+ msg.metrics.delay = EIGRP_MAX_METRIC;
+ msg.packet_type = EIGRP_OPC_UPDATE;
+ msg.eigrp = eigrp;
+ msg.data_type = EIGRP_INT;
+ msg.adv_router = nbr;
+ msg.entry = entry;
+ msg.prefix = pe;
+ eigrp_fsm_event(&msg);
}
}
eigrp_update_send_all(eigrp, nbr->ei);
}
-void eigrp_update_topology_table_prefix(struct list *table,
+void eigrp_update_topology_table_prefix(struct route_table *table,
struct eigrp_prefix_entry *prefix)
{
struct listnode *node1, *node2;
- struct eigrp_neighbor_entry *entry;
+ struct eigrp_nexthop_entry *entry;
for (ALL_LIST_ELEMENTS(prefix->entries, node1, node2, entry)) {
if (entry->distance == EIGRP_MAX_METRIC) {
- eigrp_neighbor_entry_delete(prefix, entry);
+ eigrp_nexthop_entry_delete(prefix, entry);
}
}
if (prefix->distance == EIGRP_MAX_METRIC
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