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eigrpd: Cleanup list accessors

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Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2017-08-22 14:53:14 -04:00
parent c1c32a7803
commit 695ff37bab
1 changed files with 38 additions and 54 deletions
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92
eigrpd/eigrp_fsm.c
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@ -204,8 +204,7 @@ int eigrp_get_fsm_event(struct eigrp_fsm_action_message *msg)
switch (actual_state) { switch (actual_state) {
case EIGRP_FSM_STATE_PASSIVE: { case EIGRP_FSM_STATE_PASSIVE: {
struct eigrp_neighbor_entry *head = struct eigrp_neighbor_entry *head =
(struct eigrp_neighbor_entry *) listnode_head(prefix->entries);
entry->prefix->entries->head->data;
if (head->reported_distance < prefix->fdistance) { if (head->reported_distance < prefix->fdistance) {
return EIGRP_FSM_KEEP_STATE; return EIGRP_FSM_KEEP_STATE;
@ -226,8 +225,7 @@ int eigrp_get_fsm_event(struct eigrp_fsm_action_message *msg)
case EIGRP_FSM_STATE_ACTIVE_0: { case EIGRP_FSM_STATE_ACTIVE_0: {
if (msg->packet_type == EIGRP_OPC_REPLY) { if (msg->packet_type == EIGRP_OPC_REPLY) {
struct eigrp_neighbor_entry *head = struct eigrp_neighbor_entry *head =
(struct eigrp_neighbor_entry *) listnode_head(prefix->entries);
entry->prefix->entries->head->data;
listnode_delete(prefix->rij, entry->adv_router); listnode_delete(prefix->rij, entry->adv_router);
if (prefix->rij->count) if (prefix->rij->count)
@ -279,8 +277,7 @@ int eigrp_get_fsm_event(struct eigrp_fsm_action_message *msg)
case EIGRP_FSM_STATE_ACTIVE_2: { case EIGRP_FSM_STATE_ACTIVE_2: {
if (msg->packet_type == EIGRP_OPC_REPLY) { if (msg->packet_type == EIGRP_OPC_REPLY) {
struct eigrp_neighbor_entry *head = struct eigrp_neighbor_entry *head =
(struct eigrp_neighbor_entry *) listnode_head(prefix->entries);
prefix->entries->head->data;
listnode_delete(prefix->rij, entry->adv_router); listnode_delete(prefix->rij, entry->adv_router);
if (prefix->rij->count) { if (prefix->rij->count) {
@ -350,16 +347,15 @@ int eigrp_fsm_event_nq_fcn(struct eigrp_fsm_action_message *msg)
struct eigrp *eigrp = msg->eigrp; struct eigrp *eigrp = msg->eigrp;
struct eigrp_prefix_entry *prefix = msg->prefix; struct eigrp_prefix_entry *prefix = msg->prefix;
struct list *successors = eigrp_topology_get_successor(prefix); struct list *successors = eigrp_topology_get_successor(prefix);
struct eigrp_neighbor_entry *ne;
assert(successors); // If this is NULL we have shit the bed, fun huh? assert(successors); // If this is NULL we have shit the bed, fun huh?
ne = listnode_head(successors);
prefix->state = EIGRP_FSM_STATE_ACTIVE_1; prefix->state = EIGRP_FSM_STATE_ACTIVE_1;
prefix->rdistance = prefix->distance = prefix->fdistance = prefix->rdistance = prefix->distance = prefix->fdistance =
((struct eigrp_neighbor_entry *)successors->head->data) ne->distance;
->distance; prefix->reported_metric = ne->total_metric;
prefix->reported_metric =
((struct eigrp_neighbor_entry *)successors->head->data)
->total_metric;
if (eigrp_nbr_count_get()) { if (eigrp_nbr_count_get()) {
prefix->req_action |= EIGRP_FSM_NEED_QUERY; prefix->req_action |= EIGRP_FSM_NEED_QUERY;
@ -379,16 +375,15 @@ int eigrp_fsm_event_q_fcn(struct eigrp_fsm_action_message *msg)
struct eigrp *eigrp = msg->eigrp; struct eigrp *eigrp = msg->eigrp;
struct eigrp_prefix_entry *prefix = msg->prefix; struct eigrp_prefix_entry *prefix = msg->prefix;
struct list *successors = eigrp_topology_get_successor(prefix); struct list *successors = eigrp_topology_get_successor(prefix);
struct eigrp_neighbor_entry *ne;
assert(successors); // If this is NULL somebody poked us in the eye. assert(successors); // If this is NULL somebody poked us in the eye.
ne = listnode_head(successors);
prefix->state = EIGRP_FSM_STATE_ACTIVE_3; prefix->state = EIGRP_FSM_STATE_ACTIVE_3;
prefix->rdistance = prefix->distance = prefix->fdistance = prefix->rdistance = prefix->distance = prefix->fdistance =
((struct eigrp_neighbor_entry *)successors->head->data) ne->distance;
->distance; prefix->reported_metric = ne->total_metric;
prefix->reported_metric =
((struct eigrp_neighbor_entry *)successors->head->data)
->total_metric;
if (eigrp_nbr_count_get()) { if (eigrp_nbr_count_get()) {
prefix->req_action |= EIGRP_FSM_NEED_QUERY; prefix->req_action |= EIGRP_FSM_NEED_QUERY;
listnode_add(eigrp->topology_changes_internalIPV4, prefix); listnode_add(eigrp->topology_changes_internalIPV4, prefix);
@ -405,21 +400,15 @@ int eigrp_fsm_event_q_fcn(struct eigrp_fsm_action_message *msg)
int eigrp_fsm_event_keep_state(struct eigrp_fsm_action_message *msg) int eigrp_fsm_event_keep_state(struct eigrp_fsm_action_message *msg)
{ {
struct eigrp_prefix_entry *prefix = msg->prefix; struct eigrp_prefix_entry *prefix = msg->prefix;
struct eigrp_neighbor_entry *ne = listnode_head(prefix->entries);
if (prefix->state == EIGRP_FSM_STATE_PASSIVE) { if (prefix->state == EIGRP_FSM_STATE_PASSIVE) {
if (!eigrp_metrics_is_same(prefix->reported_metric, if (!eigrp_metrics_is_same(prefix->reported_metric,
((struct eigrp_neighbor_entry *) ne->total_metric)) {
prefix->entries->head->data)
->total_metric)) {
prefix->rdistance = prefix->fdistance = prefix->rdistance = prefix->fdistance =
prefix->distance = prefix->distance = ne->distance;
((struct eigrp_neighbor_entry *)
prefix->entries->head->data)
->distance;
prefix->reported_metric = prefix->reported_metric =
((struct eigrp_neighbor_entry *) ne->total_metric;
prefix->entries->head->data)
->total_metric;
if (msg->packet_type == EIGRP_OPC_QUERY) if (msg->packet_type == EIGRP_OPC_QUERY)
eigrp_send_reply(msg->adv_router, prefix); eigrp_send_reply(msg->adv_router, prefix);
prefix->req_action |= EIGRP_FSM_NEED_UPDATE; prefix->req_action |= EIGRP_FSM_NEED_UPDATE;
@ -441,22 +430,20 @@ int eigrp_fsm_event_lr(struct eigrp_fsm_action_message *msg)
{ {
struct eigrp *eigrp = msg->eigrp; struct eigrp *eigrp = msg->eigrp;
struct eigrp_prefix_entry *prefix = msg->prefix; struct eigrp_prefix_entry *prefix = msg->prefix;
struct eigrp_neighbor_entry *ne = listnode_head(prefix->entries);
prefix->fdistance = prefix->distance = prefix->rdistance = prefix->fdistance = prefix->distance = prefix->rdistance =
((struct eigrp_neighbor_entry *)(prefix->entries->head->data)) ne->distance;
->distance; prefix->reported_metric = ne->total_metric;
prefix->reported_metric =
((struct eigrp_neighbor_entry *)(prefix->entries->head->data))
->total_metric;
if (prefix->state == EIGRP_FSM_STATE_ACTIVE_3) { if (prefix->state == EIGRP_FSM_STATE_ACTIVE_3) {
struct list *successors = eigrp_topology_get_successor(prefix); struct list *successors = eigrp_topology_get_successor(prefix);
assert(successors); // It's like Napolean and Waterloo assert(successors); // It's like Napolean and Waterloo
eigrp_send_reply( ne = listnode_head(successors);
((struct eigrp_neighbor_entry *)successors->head->data) eigrp_send_reply(ne->adv_router,
->adv_router, prefix);
prefix);
list_delete(successors); list_delete(successors);
} }
@ -473,15 +460,15 @@ int eigrp_fsm_event_lr(struct eigrp_fsm_action_message *msg)
int eigrp_fsm_event_dinc(struct eigrp_fsm_action_message *msg) int eigrp_fsm_event_dinc(struct eigrp_fsm_action_message *msg)
{ {
struct list *successors = eigrp_topology_get_successor(msg->prefix); struct list *successors = eigrp_topology_get_successor(msg->prefix);
struct eigrp_neighbor_entry *ne;
assert(successors); // Trump and his big hands assert(successors); // Trump and his big hands
ne = listnode_head(successors);
msg->prefix->state = msg->prefix->state == EIGRP_FSM_STATE_ACTIVE_1 msg->prefix->state = msg->prefix->state == EIGRP_FSM_STATE_ACTIVE_1
? EIGRP_FSM_STATE_ACTIVE_0 ? EIGRP_FSM_STATE_ACTIVE_0
: EIGRP_FSM_STATE_ACTIVE_2; : EIGRP_FSM_STATE_ACTIVE_2;
msg->prefix->distance = msg->prefix->distance = ne->distance;
((struct eigrp_neighbor_entry *)successors->head->data)
->distance;
if (!msg->prefix->rij->count) if (!msg->prefix->rij->count)
(*(NSM[msg->prefix->state][eigrp_get_fsm_event(msg)].func))( (*(NSM[msg->prefix->state][eigrp_get_fsm_event(msg)].func))(
msg); msg);
@ -495,13 +482,11 @@ int eigrp_fsm_event_lr_fcs(struct eigrp_fsm_action_message *msg)
{ {
struct eigrp *eigrp = msg->eigrp; struct eigrp *eigrp = msg->eigrp;
struct eigrp_prefix_entry *prefix = msg->prefix; struct eigrp_prefix_entry *prefix = msg->prefix;
struct eigrp_neighbor_entry *ne = listnode_head(prefix->entries);
prefix->state = EIGRP_FSM_STATE_PASSIVE; prefix->state = EIGRP_FSM_STATE_PASSIVE;
prefix->distance = prefix->rdistance = prefix->distance = prefix->rdistance = ne->distance;
((struct eigrp_neighbor_entry *)(prefix->entries->head->data)) prefix->reported_metric = ne->total_metric;
->distance;
prefix->reported_metric =
((struct eigrp_neighbor_entry *)(prefix->entries->head->data))
->total_metric;
prefix->fdistance = prefix->fdistance > prefix->distance prefix->fdistance = prefix->fdistance > prefix->distance
? prefix->distance ? prefix->distance
: prefix->fdistance; : prefix->fdistance;
@ -510,11 +495,9 @@ int eigrp_fsm_event_lr_fcs(struct eigrp_fsm_action_message *msg)
assert(successors); // Having a spoon and all you need is a assert(successors); // Having a spoon and all you need is a
// knife // knife
ne = listnode_head(successors);
eigrp_send_reply( eigrp_send_reply(ne->adv_router,
((struct eigrp_neighbor_entry *)successors->head->data) prefix);
->adv_router,
prefix);
list_delete(successors); list_delete(successors);
} }
@ -531,6 +514,7 @@ int eigrp_fsm_event_lr_fcn(struct eigrp_fsm_action_message *msg)
{ {
struct eigrp *eigrp = msg->eigrp; struct eigrp *eigrp = msg->eigrp;
struct eigrp_prefix_entry *prefix = msg->prefix; struct eigrp_prefix_entry *prefix = msg->prefix;
struct eigrp_neighbor_entry *best_successor;
struct list *successors = eigrp_topology_get_successor(prefix); struct list *successors = eigrp_topology_get_successor(prefix);
assert(successors); // Routing without a stack assert(successors); // Routing without a stack
@ -538,8 +522,8 @@ int eigrp_fsm_event_lr_fcn(struct eigrp_fsm_action_message *msg)
prefix->state = prefix->state == EIGRP_FSM_STATE_ACTIVE_0 prefix->state = prefix->state == EIGRP_FSM_STATE_ACTIVE_0
? EIGRP_FSM_STATE_ACTIVE_1 ? EIGRP_FSM_STATE_ACTIVE_1
: EIGRP_FSM_STATE_ACTIVE_3; : EIGRP_FSM_STATE_ACTIVE_3;
struct eigrp_neighbor_entry *best_successor =
((struct eigrp_neighbor_entry *)(successors->head->data)); best_successor = listnode_head(successors);
prefix->rdistance = prefix->distance = best_successor->distance; prefix->rdistance = prefix->distance = best_successor->distance;
prefix->reported_metric = best_successor->total_metric; prefix->reported_metric = best_successor->total_metric;
@ -559,13 +543,13 @@ int eigrp_fsm_event_lr_fcn(struct eigrp_fsm_action_message *msg)
int eigrp_fsm_event_qact(struct eigrp_fsm_action_message *msg) int eigrp_fsm_event_qact(struct eigrp_fsm_action_message *msg)
{ {
struct list *successors = eigrp_topology_get_successor(msg->prefix); struct list *successors = eigrp_topology_get_successor(msg->prefix);
struct eigrp_neighbor_entry *ne;
assert(successors); // Cats and no Dogs assert(successors); // Cats and no Dogs
ne = listnode_head(successors);
msg->prefix->state = EIGRP_FSM_STATE_ACTIVE_2; msg->prefix->state = EIGRP_FSM_STATE_ACTIVE_2;
msg->prefix->distance = msg->prefix->distance = ne->distance;
((struct eigrp_neighbor_entry *)(successors->head->data))
->distance;
list_delete(successors); list_delete(successors);
return 1; return 1;