Signed-off-by: Jarno Rajahalme <[email protected]>
---
lib/rstp-state-machines.c | 398 +++++++++++++++++++++------------------------
1 file changed, 182 insertions(+), 216 deletions(-)
diff --git a/lib/rstp-state-machines.c b/lib/rstp-state-machines.c
index 3a408b4..e8b8438 100644
--- a/lib/rstp-state-machines.c
+++ b/lib/rstp-state-machines.c
@@ -109,11 +109,12 @@ process_received_bpdu__(struct rstp_port *p, const void
*bpdu,
{
struct rstp *rstp = p->rstp;
- if (!p->port_enabled)
+ if (!p->port_enabled) {
return;
- if (p->rcvd_bpdu)
+ }
+ if (p->rcvd_bpdu) {
return;
-
+ }
if (validate_received_bpdu(p, bpdu, bpdu_size) == 0) {
p->rcvd_bpdu = true;
p->rx_rstp_bpdu_cnt++;
@@ -129,6 +130,7 @@ process_received_bpdu__(struct rstp_port *p, const void
*bpdu,
}
}
+/* Returns 0 on success. */
static int
validate_received_bpdu(struct rstp_port *p, const void *bpdu, size_t bpdu_size)
OVS_REQUIRES(rstp_mutex)
@@ -141,18 +143,16 @@ validate_received_bpdu(struct rstp_port *p, const void
*bpdu, size_t bpdu_size)
ntohs(temp->protocol_identifier) != 0) {
return -1;
} else {
- if (temp->bpdu_type == CONFIGURATION_BPDU &&
- bpdu_size >= CONFIGURATION_BPDU_SIZE &&
- (time_decode(temp->message_age) < time_decode(temp->max_age)))
- {
+ if (temp->bpdu_type == CONFIGURATION_BPDU
+ && bpdu_size >= CONFIGURATION_BPDU_SIZE
+ && (time_decode(temp->message_age) < time_decode(temp->max_age)))
{
if ((ntohll(temp->designated_bridge_id) !=
- p->rstp->bridge_identifier) ||
- ((ntohll(temp->designated_bridge_id) ==
- p->rstp->bridge_identifier) &&
- (ntohs(temp->designated_port_id) != p->port_id))) {
+ p->rstp->bridge_identifier)
+ || ((ntohll(temp->designated_bridge_id) ==
+ p->rstp->bridge_identifier)
+ && (ntohs(temp->designated_port_id) != p->port_id))) {
return 0;
- }
- else {
+ } else {
return -1;
}
} else if (temp->bpdu_type == TOPOLOGY_CHANGE_NOTIFICATION_BPDU) {
@@ -160,8 +160,7 @@ validate_received_bpdu(struct rstp_port *p, const void
*bpdu, size_t bpdu_size)
} else if (temp->bpdu_type == RAPID_SPANNING_TREE_BPDU &&
bpdu_size >= RAPID_SPANNING_TREE_BPDU_SIZE) {
return 0;
- }
- else {
+ } else {
return -1;
}
}
@@ -173,7 +172,7 @@ validate_received_bpdu(struct rstp_port *p, const void
*bpdu, size_t bpdu_size)
* boolean 'changes' is true, meaning that something changed and the SMs need
* to work to process this change.
* The boolean 'changes' is set every time a SM modifies its state, a BPDU is
- * received, a timer expires or port down event is detected. If a parameter is
+ * received, a timer expires or port down event is detected. If a parameter is
* set by management, then 'changes' is set.
*/
#define MAX_RSTP_ITERATIONS 1000 /* safeguard */
@@ -181,12 +180,14 @@ int
move_rstp__(struct rstp *rstp)
OVS_REQUIRES(rstp_mutex)
{
- struct rstp_port *p;
int num_iterations;
num_iterations = 0;
while (rstp->changes == true && num_iterations < MAX_RSTP_ITERATIONS) {
+ struct rstp_port *p;
+
VLOG_DBG("%s: move_rstp()", rstp->name);
+
rstp->changes = false;
port_role_selection_sm(rstp);
if (rstp->ports_count > 0) {
@@ -229,7 +230,7 @@ void decrease_rstp_port_timers__(struct rstp *r)
decrement_timer(&p->mdelay_while);
decrement_timer(&p->edge_delay_while);
decrement_timer(&p->tx_count);
- p->uptime+=1;
+ p->uptime += 1;
}
}
r->changes = true;
@@ -290,6 +291,7 @@ updt_roles_tree__(struct rstp *r)
LIST_FOR_EACH (p, node, &r->ports) {
uint32_t old_root_path_cost;
uint32_t root_path_cost;
+
if (p->info_is != INFO_IS_RECEIVED) {
continue;
}
@@ -301,8 +303,7 @@ updt_roles_tree__(struct rstp *r)
candidate_vector.root_path_cost = root_path_cost;
if ((candidate_vector.designated_bridge_id & 0xffffffffffffULL) ==
- (r->bridge_priority.designated_bridge_id & 0xffffffffffffULL))
- {
+ (r->bridge_priority.designated_bridge_id & 0xffffffffffffULL))
{
break;
}
if (compare_rstp_priority_vector(&candidate_vector, &best_vector)
@@ -345,9 +346,10 @@ updt_roles_tree__(struct rstp *r)
break;
case INFO_IS_MINE:
p->selected_role = ROLE_DESIGNATED;
- if ((compare_rstp_priority_vector(&p->port_priority,
- &p->designated_priority_vector) != SAME) ||
- !rstp_times_equal(&p->designated_times, &r->root_times)) {
+ if (compare_rstp_priority_vector(&p->port_priority,
+
&p->designated_priority_vector)
+ != SAME
+ || !rstp_times_equal(&p->designated_times,
&r->root_times)) {
p->updt_info = true;
}
break;
@@ -409,9 +411,10 @@ port_role_selection_sm(struct rstp *r)
switch (r->port_role_selection_sm_state) {
case PORT_ROLE_SELECTION_SM_INIT:
- if (r->begin)
+ if (r->begin) {
r->port_role_selection_sm_state =
PORT_ROLE_SELECTION_SM_INIT_BRIDGE_EXEC;
+ }
break;
case PORT_ROLE_SELECTION_SM_INIT_BRIDGE_EXEC:
updt_role_disabled_tree(r);
@@ -540,8 +543,8 @@ port_protocol_migration_sm(struct rstp_port *p)
switch (p->port_protocol_migration_sm_state) {
case PORT_PROTOCOL_MIGRATION_SM_INIT:
- p->port_protocol_migration_sm_state =
- PORT_PROTOCOL_MIGRATION_SM_CHECKING_RSTP_EXEC;
+ p->port_protocol_migration_sm_state =
+ PORT_PROTOCOL_MIGRATION_SM_CHECKING_RSTP_EXEC;
/* no break */
case PORT_PROTOCOL_MIGRATION_SM_CHECKING_RSTP_EXEC:
p->mcheck = false;
@@ -552,16 +555,15 @@ port_protocol_migration_sm(struct rstp_port *p)
/* no break */
case PORT_PROTOCOL_MIGRATION_SM_CHECKING_RSTP:
if (p->mdelay_while == 0) {
- p->port_protocol_migration_sm_state =
- PORT_PROTOCOL_MIGRATION_SM_SENSING_EXEC;
- }
- else if ((p->mdelay_while != r->migrate_time) && !p->port_enabled) {
+ p->port_protocol_migration_sm_state =
+ PORT_PROTOCOL_MIGRATION_SM_SENSING_EXEC;
+ } else if ((p->mdelay_while != r->migrate_time) && !p->port_enabled) {
p->port_protocol_migration_sm_state =
PORT_PROTOCOL_MIGRATION_SM_CHECKING_RSTP_EXEC;
}
break;
case PORT_PROTOCOL_MIGRATION_SM_SELECTING_STP_EXEC:
- p->send_rstp = false;
+ p->send_rstp = false;
p->mdelay_while = r->migrate_time;
p->port_protocol_migration_sm_state =
PORT_PROTOCOL_MIGRATION_SM_SELECTING_STP;
@@ -580,11 +582,10 @@ port_protocol_migration_sm(struct rstp_port *p)
/* no break */
case PORT_PROTOCOL_MIGRATION_SM_SENSING:
if (!p->port_enabled || p->mcheck || ((r->rstp_version) &&
- !p->send_rstp && p->rcvd_rstp)) {
+ !p->send_rstp && p->rcvd_rstp)) {
p->port_protocol_migration_sm_state =
PORT_PROTOCOL_MIGRATION_SM_CHECKING_RSTP_EXEC;
- }
- else if (p->send_rstp && p->rcvd_stp) {
+ } else if (p->send_rstp && p->rcvd_stp) {
p->port_protocol_migration_sm_state =
PORT_PROTOCOL_MIGRATION_SM_SELECTING_STP_EXEC;
}
@@ -636,8 +637,9 @@ bridge_detection_sm(struct rstp_port *p)
p->bridge_detection_sm_state = BRIDGE_DETECTION_SM_NOT_EDGE;
/* no break */
case BRIDGE_DETECTION_SM_NOT_EDGE:
- if ((!p->port_enabled && p->admin_edge) || ((p->edge_delay_while == 0)
- && p->auto_edge && p->send_rstp && p->proposing)) {
+ if ((!p->port_enabled && p->admin_edge)
+ || ((p->edge_delay_while == 0) && p->auto_edge && p->send_rstp
+ && p->proposing)) {
p->bridge_detection_sm_state = BRIDGE_DETECTION_SM_EDGE_EXEC;
}
break;
@@ -689,7 +691,7 @@ record_agreement(struct rstp_port *p)
r = p->rstp;
if (r->rstp_version && p->oper_point_to_point_mac &&
- ((p->received_bpdu_buffer.flags & BPDU_FLAG_AGREEMENT))) {
+ ((p->received_bpdu_buffer.flags & BPDU_FLAG_AGREEMENT))) {
p->agreed = true;
p->proposing = false;
} else {
@@ -706,7 +708,7 @@ set_tc_flags(struct rstp_port *p)
* RST BPDU.
*/
if (p->received_bpdu_buffer.bpdu_type == CONFIGURATION_BPDU ||
- p->received_bpdu_buffer.bpdu_type == RAPID_SPANNING_TREE_BPDU) {
+ p->received_bpdu_buffer.bpdu_type == RAPID_SPANNING_TREE_BPDU) {
if ((p->received_bpdu_buffer.flags & BPDU_FLAG_TOPCHANGE) != 0) {
p->rcvd_tc = true;
}
@@ -715,8 +717,8 @@ set_tc_flags(struct rstp_port *p)
}
}
/* Sets rcvd_tcn true if the BPDU is a TCN BPDU. */
- if (p->received_bpdu_buffer.bpdu_type ==
- TOPOLOGY_CHANGE_NOTIFICATION_BPDU) {
+ if (p->received_bpdu_buffer.bpdu_type
+ == TOPOLOGY_CHANGE_NOTIFICATION_BPDU) {
p->rcvd_tcn = true;
}
}
@@ -737,8 +739,9 @@ record_proposal(struct rstp_port *p)
{
enum port_flag role =
((p->received_bpdu_buffer.flags) & ROLE_FLAG_MASK) >> ROLE_FLAG_SHIFT;
- if ((role == PORT_DES) &&
- ((p->received_bpdu_buffer.flags & BPDU_FLAG_PROPOSAL) != 0)) {
+
+ if ((role == PORT_DES)
+ && ((p->received_bpdu_buffer.flags & BPDU_FLAG_PROPOSAL) != 0)) {
p->proposed = true;
}
}
@@ -775,9 +778,9 @@ updt_rcvd_info_while(struct rstp_port *p)
*/
if (p->port_times.message_age < p->port_times.max_age) {
p->rcvd_info_while = p->port_times.hello_time * 3;
- } else {
+ } else {
p->rcvd_info_while = 0;
- }
+ }
}
/* Times are internally held in seconds, while the protocol uses 1/256 seconds.
@@ -847,6 +850,7 @@ tx_rstp(struct rstp_port *p)
bpdu.hello_time = time_encode(p->designated_times.hello_time);
bpdu.forward_delay = time_encode(p->designated_times.forward_delay);
bpdu.flags = 0;
+
switch (p->role) {
case ROLE_ROOT:
bpdu.flags = PORT_ROOT << ROLE_FLAG_SHIFT;
@@ -940,24 +944,20 @@ port_transmit_sm(struct rstp_port *p)
VLOG_DBG("%s, port %u: port_transmit_sm ROLE == DISABLED.",
p->rstp->name, p->port_number);
break;
- }
- else if (p->send_rstp && p->new_info &&
- (p->tx_count < r->transmit_hold_count) && (p->hello_when != 0)
- && p->selected && !p->updt_info) {
+ } else if (p->send_rstp && p->new_info
+ && p->tx_count < r->transmit_hold_count
+ && p->hello_when != 0 && p->selected && !p->updt_info) {
p->port_transmit_sm_state = PORT_TRANSMIT_SM_TRANSMIT_RSTP_EXEC;
- }
- else if (p->hello_when == 0 && p->selected && !p->updt_info) {
+ } else if (p->hello_when == 0 && p->selected && !p->updt_info) {
p->port_transmit_sm_state =
PORT_TRANSMIT_SM_TRANSMIT_PERIODIC_EXEC;
- }
- else if (!p->send_rstp && p->new_info && (p->role == ROLE_ROOT) &&
- (p->tx_count < r->transmit_hold_count) && (p->hello_when != 0)
- && p->selected && !p->updt_info) {
+ } else if (!p->send_rstp && p->new_info && p->role == ROLE_ROOT
+ && p->tx_count < r->transmit_hold_count
+ && p->hello_when != 0 && p->selected && !p->updt_info) {
p->port_transmit_sm_state = PORT_TRANSMIT_SM_TRANSMIT_TCN_EXEC;
- }
- else if (!p->send_rstp && p->new_info && (p->role == ROLE_DESIGNATED)
- && (p->tx_count < r->transmit_hold_count) &&
- (p->hello_when != 0) && p->selected && !p->updt_info) {
+ } else if (!p->send_rstp && p->new_info && p->role == ROLE_DESIGNATED
+ && p->tx_count < r->transmit_hold_count
+ && p->hello_when != 0 && p->selected && !p->updt_info) {
p->port_transmit_sm_state = PORT_TRANSMIT_SM_TRANSMIT_CONFIG_EXEC;
}
break;
@@ -1033,7 +1033,7 @@ rcv_info(struct rstp_port *p)
cp = compare_rstp_priority_vector(&p->msg_priority, &p->port_priority);
ct = rstp_times_equal(&p->port_times, &p->msg_times);
role =
- ((p->received_bpdu_buffer.flags) & ROLE_FLAG_MASK) >> ROLE_FLAG_SHIFT;
+ (p->received_bpdu_buffer.flags & ROLE_FLAG_MASK) >> ROLE_FLAG_SHIFT;
/* Returns SuperiorDesignatedInfo if:
* a) The received message conveys a Designated Port Role, and
@@ -1045,41 +1045,35 @@ rcv_info(struct rstp_port *p)
* 17.19.22).
* NOTE: Configuration BPDU explicitly conveys a Designated Port Role.
*/
- if ((role == PORT_DES ||
- p->received_bpdu_buffer.bpdu_type == CONFIGURATION_BPDU) &&
- ((cp == SUPERIOR) || ((cp == SAME) && ct == false))) {
+ if ((role == PORT_DES
+ || p->received_bpdu_buffer.bpdu_type == CONFIGURATION_BPDU)
+ && (cp == SUPERIOR || (cp == SAME && ct == false))) {
return SUPERIOR_DESIGNATED_INFO;
- }
- /* Returns RepeatedDesignatedInfo if:
- * b) The received message conveys Designated Port Role, and a message
- * priority vector and timer parameters that are the same as the Port's
- * port priority vector or timer values.
- */
- else if ((role == PORT_DES) && (cp == SAME) && (ct == true)) {
+ /* Returns RepeatedDesignatedInfo if:
+ * b) The received message conveys Designated Port Role, and a message
+ * priority vector and timer parameters that are the same as the
+ * Port's port priority vector or timer values. */
+ } else if (role == PORT_DES && cp == SAME && ct == true) {
return REPEATED_DESIGNATED_INFO;
- }
- /* Returns InferiorDesignatedInfo if:
- * c) The received message conveys a Designated Port Role, and a message
- * priority vector that is worse than the Port's port priority vector.
- */
- else if ((role == PORT_DES) && (cp == INFERIOR)) {
+ /* Returns InferiorDesignatedInfo if:
+ * c) The received message conveys a Designated Port Role, and a
+ * message priority vector that is worse than the Port's port
+ * priority vector. */
+ } else if (role == PORT_DES && cp == INFERIOR) {
return INFERIOR_DESIGNATED_INFO;
- }
- /* Returns InferiorRootAlternateInfo if:
- * d) The received message conveys a Root Port, Alternate Port, or Backup
- * Port Role and a message priority that is the same as or worse than
- * the port priority vector.
- */
- else if ((role == PORT_ROOT || role == PORT_ALT_BACK) &&
- (cp == INFERIOR || cp == SAME)) {
+ /* Returns InferiorRootAlternateInfo if:
+ * d) The received message conveys a Root Port, Alternate Port, or
+ * Backup Port Role and a message priority that is the same as or
+ * worse than the port priority vector. */
+ } else if ((role == PORT_ROOT || role == PORT_ALT_BACK) &&
+ (cp == INFERIOR || cp == SAME)) {
return INFERIOR_ROOT_ALTERNATE_INFO;
- }
- /* Otherwise, returns OtherInfo. */
- else {
+ /* Otherwise, returns OtherInfo. */
+ } else {
return OTHER_INFO;
}
}
@@ -1089,12 +1083,13 @@ better_or_same_info(struct rstp_port *p, int
new_info_is)
OVS_REQUIRES(rstp_mutex)
{
/* >= SUPERIOR means that the vector is better or the same. */
- return ((new_info_is == RECEIVED && p->info_is == INFO_IS_RECEIVED &&
- compare_rstp_priority_vector(&p->msg_priority,
- &p->port_priority) >= SUPERIOR) ||
- (new_info_is == MINE && p->info_is == INFO_IS_MINE &&
- compare_rstp_priority_vector(&p->designated_priority_vector,
- &p->port_priority) >= SUPERIOR));
+ return
+ (new_info_is == RECEIVED && p->info_is == INFO_IS_RECEIVED
+ && compare_rstp_priority_vector(&p->msg_priority,
+ &p->port_priority) >= SUPERIOR)
+ || (new_info_is == MINE && p->info_is == INFO_IS_MINE
+ && compare_rstp_priority_vector(&p->designated_priority_vector,
+ &p->port_priority) >= SUPERIOR);
}
static int
@@ -1107,7 +1102,7 @@ port_information_sm(struct rstp_port *p)
old_state = p->port_information_sm_state;
r = p->rstp;
- if (!p->port_enabled && (p->info_is != INFO_IS_DISABLED)) {
+ if (!p->port_enabled && p->info_is != INFO_IS_DISABLED) {
p->port_information_sm_state = PORT_INFORMATION_SM_DISABLED_EXEC;
}
switch (p->port_information_sm_state) {
@@ -1348,8 +1343,8 @@ static int
check_selected_role_change(struct rstp_port *p, int current_role_state)
OVS_REQUIRES(rstp_mutex)
{
- if (p->selected && !p->updt_info && (p->role != p->selected_role) &&
- (p->selected_role != current_role_state)) {
+ if (p->selected && !p->updt_info && p->role != p->selected_role
+ && p->selected_role != current_role_state) {
VLOG_DBG("%s, port %u: case: current = %s role = %s selected = %d",
p->rstp->name, p->port_number,
rstp_port_role_name(current_role_state),
@@ -1454,9 +1449,8 @@ port_role_transition_sm(struct rstp_port *p)
case PORT_ROLE_TRANSITION_SM_DISABLE_PORT:
if (check_selected_role_change(p, ROLE_DISABLED)) {
break;
- }
- else if (p->selected && !p->updt_info && !p->learning &&
- !p->forwarding) {
+ } else if (p->selected && !p->updt_info && !p->learning
+ && !p->forwarding) {
p->port_role_transition_sm_state =
PORT_ROLE_TRANSITION_SM_DISABLED_PORT_EXEC;
}
@@ -1472,10 +1466,9 @@ port_role_transition_sm(struct rstp_port *p)
case PORT_ROLE_TRANSITION_SM_DISABLED_PORT:
if (check_selected_role_change(p, ROLE_DISABLED)) {
break;
- }
- else if (p->selected && !p->updt_info &&
- ((p->fd_while != p->designated_times.max_age) || p->sync ||
- p->re_root || !p->synced)) {
+ } else if (p->selected && !p->updt_info
+ && (p->fd_while != p->designated_times.max_age || p->sync
+ || p->re_root || !p->synced)) {
p->port_role_transition_sm_state =
PORT_ROLE_TRANSITION_SM_DISABLED_PORT_EXEC;
}
@@ -1488,44 +1481,37 @@ port_role_transition_sm(struct rstp_port *p)
case PORT_ROLE_TRANSITION_SM_ROOT_PORT:
if (check_selected_role_change(p, ROLE_ROOT)) {
break;
- }
- else if (p->selected && !p->updt_info) {
+ } else if (p->selected && !p->updt_info) {
if (p->rr_while != p->designated_times.forward_delay) {
p->port_role_transition_sm_state =
PORT_ROLE_TRANSITION_SM_ROOT_PORT_EXEC;
break;
- }
- else if (p->re_root && p->forward) {
+ } else if (p->re_root && p->forward) {
p->port_role_transition_sm_state =
PORT_ROLE_TRANSITION_SM_REROOTED_EXEC;
break;
- }
- else if (((p->fd_while == 0) || ((re_rooted(p) &&
- (p->rb_while == 0)) &&
- (r->rstp_version))) && !p->learn) {
+ } else if ((p->fd_while == 0
+ || ((re_rooted(p) && p->rb_while == 0)
+ && r->rstp_version)) && !p->learn) {
p->port_role_transition_sm_state =
PORT_ROLE_TRANSITION_SM_ROOT_LEARN_EXEC;
break;
- }
- else if (((p->fd_while == 0) || ((re_rooted(p) &&
- (p->rb_while == 0)) &&
- (r->rstp_version))) && p->learn && !p->forward) {
+ } else if ((p->fd_while == 0
+ || ((re_rooted(p) && p->rb_while == 0)
+ && r->rstp_version)) && p->learn && !p->forward) {
p->port_role_transition_sm_state =
PORT_ROLE_TRANSITION_SM_ROOT_FORWARD_EXEC;
break;
- }
- else if (p->proposed && !p->agree) {
+ } else if (p->proposed && !p->agree) {
p->port_role_transition_sm_state =
PORT_ROLE_TRANSITION_SM_ROOT_PROPOSED_EXEC;
break;
- }
- else if ((all_synced(r) && !p->agree) ||
- (p->proposed && p->agree)) {
+ } else if ((all_synced(r) && !p->agree) ||
+ (p->proposed && p->agree)) {
p->port_role_transition_sm_state =
PORT_ROLE_TRANSITION_SM_ROOT_AGREED_EXEC;
break;
- }
- else if (!p->forward && !p->re_root) {
+ } else if (!p->forward && !p->re_root) {
p->port_role_transition_sm_state =
PORT_ROLE_TRANSITION_SM_REROOT_EXEC;
break;
@@ -1574,38 +1560,33 @@ port_role_transition_sm(struct rstp_port *p)
case PORT_ROLE_TRANSITION_SM_DESIGNATED_PORT:
if (check_selected_role_change(p, ROLE_DESIGNATED)) {
break;
- }
- else if (p->selected && !p->updt_info) {
- if (((p->sync && !p->synced) || (p->re_root &&
- (p->rr_while != 0)) || p->disputed) &&
- !p->oper_edge && (p->learn || p->forward)) {
- p->port_role_transition_sm_state =
- PORT_ROLE_TRANSITION_SM_DESIGNATED_DISCARD_EXEC;
- }
- else if (((p->fd_while == 0)|| p->agreed || p->oper_edge) &&
- ((p->rr_while == 0) || !p->re_root) &&
- !p->sync && !p->learn) {
+ } else if (p->selected && !p->updt_info) {
+ if (((p->sync && !p->synced)
+ || (p->re_root && p->rr_while != 0) || p->disputed)
+ && !p->oper_edge && (p->learn || p->forward)) {
+ p->port_role_transition_sm_state =
+ PORT_ROLE_TRANSITION_SM_DESIGNATED_DISCARD_EXEC;
+ } else if ((p->fd_while == 0 || p->agreed || p->oper_edge)
+ && (p->rr_while == 0 || !p->re_root)
+ && !p->sync && !p->learn) {
p->port_role_transition_sm_state =
PORT_ROLE_TRANSITION_SM_DESIGNATED_LEARN_EXEC;
- }
- else if (((p->fd_while == 0) || p->agreed || p->oper_edge) &&
- ((p->rr_while == 0) || !p->re_root) &&
- !p->sync && (p->learn && !p->forward)) {
+ } else if ((p->fd_while == 0 || p->agreed || p->oper_edge)
+ && (p->rr_while == 0 || !p->re_root)
+ && !p->sync && (p->learn && !p->forward)) {
p->port_role_transition_sm_state =
PORT_ROLE_TRANSITION_SM_DESIGNATED_FORWARD_EXEC;
- }
- else if (!p->forward && !p->agreed && !p->proposing &&
- !p->oper_edge) {
+ } else if (!p->forward && !p->agreed && !p->proposing &&
+ !p->oper_edge) {
p->port_role_transition_sm_state =
PORT_ROLE_TRANSITION_SM_DESIGNATED_PROPOSE_EXEC;
- }
- else if ((!p->learning && !p->forwarding && !p->synced) ||
- (p->agreed && !p->synced) || (p->oper_edge && !p->synced) ||
- (p->sync && p->synced)) {
+ } else if ((!p->learning && !p->forwarding && !p->synced)
+ || (p->agreed && !p->synced)
+ || (p->oper_edge && !p->synced)
+ || (p->sync && p->synced)) {
p->port_role_transition_sm_state =
PORT_ROLE_TRANSITION_SM_DESIGNATED_SYNCED_EXEC;
- }
- else if ((p->rr_while == 0) && p->re_root) {
+ } else if (p->rr_while == 0 && p->re_root) {
p->port_role_transition_sm_state =
PORT_ROLE_TRANSITION_SM_DESIGNATED_RETIRED_EXEC;
}
@@ -1660,24 +1641,20 @@ port_role_transition_sm(struct rstp_port *p)
case PORT_ROLE_TRANSITION_SM_ALTERNATE_PORT:
if (check_selected_role_change(p, ROLE_ALTERNATE)) {
break;
- }
- else if (p->selected && !p->updt_info) {
- if ((p->rb_while != (2 * p->designated_times.hello_time)) &&
- (p->role == ROLE_BACKUP)) {
+ } else if (p->selected && !p->updt_info) {
+ if (p->rb_while != 2 * p->designated_times.hello_time
+ && p->role == ROLE_BACKUP) {
p->port_role_transition_sm_state =
PORT_ROLE_TRANSITION_SM_BACKUP_PORT_EXEC;
- }
- else if ((p->fd_while != forward_delay(p)) || p->sync ||
- p->re_root || !p->synced) {
+ } else if ((p->fd_while != forward_delay(p)) || p->sync
+ || p->re_root || !p->synced) {
p->port_role_transition_sm_state =
PORT_ROLE_TRANSITION_SM_ALTERNATE_PORT_EXEC;
- }
- else if (p->proposed && !p->agree) {
+ } else if (p->proposed && !p->agree) {
p->port_role_transition_sm_state =
PORT_ROLE_TRANSITION_SM_ALTERNATE_PROPOSED_EXEC;
- }
- else if (( all_synced(r) && !p->agree) ||
- (p->proposed && p->agree)) {
+ } else if ((all_synced(r) && !p->agree)
+ || (p->proposed && p->agree)) {
p->port_role_transition_sm_state =
PORT_ROLE_TRANSITION_SM_ALTERNATE_AGREED;
}
@@ -1704,9 +1681,8 @@ port_role_transition_sm(struct rstp_port *p)
case PORT_ROLE_TRANSITION_SM_BLOCK_PORT:
if (check_selected_role_change(p, ROLE_ALTERNATE)) {
break;
- }
- else if (p->selected && !p->updt_info && !p->learning &&
- !p->forwarding) {
+ } else if (p->selected && !p->updt_info && !p->learning &&
+ !p->forwarding) {
p->port_role_transition_sm_state =
PORT_ROLE_TRANSITION_SM_ALTERNATE_PORT_EXEC;
}
@@ -1825,8 +1801,7 @@ port_state_transition_sm(struct rstp_port *p)
if (!p->learn) {
p->port_state_transition_sm_state =
PORT_STATE_TRANSITION_SM_DISCARDING_EXEC;
- }
- else if (p->forward) {
+ } else if (p->forward) {
p->port_state_transition_sm_state =
PORT_STATE_TRANSITION_SM_FORWARDING_EXEC;
}
@@ -1868,8 +1843,7 @@ new_tc_while(struct rstp_port *p)
if (p->tc_while == 0 && p->send_rstp == true) {
p->tc_while = r->bridge_hello_time + 1;
p->new_info = true;
- }
- else if (p->tc_while == 0 && p->send_rstp == false) {
+ } else if (p->tc_while == 0 && p->send_rstp == false) {
p->tc_while = r->bridge_max_age + r->bridge_forward_delay;
}
}
@@ -1937,16 +1911,14 @@ topology_change_sm(struct rstp_port *p)
p->topology_change_sm_state = TOPOLOGY_CHANGE_SM_LEARNING;
/* no break */
case TOPOLOGY_CHANGE_SM_LEARNING:
- if ((p->role != ROLE_ROOT) && (p->role != ROLE_DESIGNATED) &&
+ if (p->role != ROLE_ROOT && p->role != ROLE_DESIGNATED &&
!(p->learn || p->learning) && !(p->rcvd_tc || p->rcvd_tcn ||
- p->rcvd_tc_ack || p->tc_prop)) {
+ p->rcvd_tc_ack || p->tc_prop)) {
p->topology_change_sm_state = TOPOLOGY_CHANGE_SM_INACTIVE_EXEC;
- }
- else if (p->rcvd_tc || p->rcvd_tcn || p->rcvd_tc_ack || p->tc_prop) {
+ } else if (p->rcvd_tc || p->rcvd_tcn || p->rcvd_tc_ack || p->tc_prop) {
p->topology_change_sm_state = TOPOLOGY_CHANGE_SM_LEARNING_EXEC;
- }
- else if (((p->role == ROLE_ROOT) || (p->role == ROLE_DESIGNATED)) &&
- p->forward && !p->oper_edge) {
+ } else if ((p->role == ROLE_ROOT || p->role == ROLE_DESIGNATED)
+ && p->forward && !p->oper_edge) {
p->topology_change_sm_state = TOPOLOGY_CHANGE_SM_DETECTED_EXEC;
}
break;
@@ -1960,20 +1932,16 @@ topology_change_sm(struct rstp_port *p)
p->topology_change_sm_state = TOPOLOGY_CHANGE_SM_ACTIVE;
/* no break */
case TOPOLOGY_CHANGE_SM_ACTIVE:
- if (((p->role != ROLE_ROOT) && (p->role != ROLE_DESIGNATED)) ||
- p->oper_edge) {
+ if ((p->role != ROLE_ROOT && p->role != ROLE_DESIGNATED)
+ || p->oper_edge) {
p->topology_change_sm_state = TOPOLOGY_CHANGE_SM_LEARNING_EXEC;
- }
- else if (p->rcvd_tcn) {
+ } else if (p->rcvd_tcn) {
p->topology_change_sm_state = TOPOLOGY_CHANGE_SM_NOTIFIED_TCN_EXEC;
- }
- else if (p->rcvd_tc) {
+ } else if (p->rcvd_tc) {
p->topology_change_sm_state = TOPOLOGY_CHANGE_SM_NOTIFIED_TC_EXEC;
- }
- else if (p->tc_prop && !p->oper_edge) {
+ } else if (p->tc_prop && !p->oper_edge) {
p->topology_change_sm_state = TOPOLOGY_CHANGE_SM_PROPAGATING_EXEC;
- }
- else if (p->rcvd_tc_ack) {
+ } else if (p->rcvd_tc_ack) {
p->topology_change_sm_state = TOPOLOGY_CHANGE_SM_ACKNOWLEDGED_EXEC;
}
break;
@@ -2047,51 +2015,49 @@ compare_rstp_priority_vector(struct
rstp_priority_vector *v1,
RSTP_ID_ARGS(v2->root_bridge_id), v2->root_path_cost,
RSTP_ID_ARGS(v2->designated_bridge_id), v2->designated_port_id);
- if ((v1->root_bridge_id < v2->root_bridge_id) ||
- ((v1->root_bridge_id == v2->root_bridge_id) &&
- (v1->root_path_cost < v2->root_path_cost)) ||
- ((v1->root_bridge_id == v2->root_bridge_id) &&
- (v1->root_path_cost == v2->root_path_cost) &&
- (v1->designated_bridge_id < v2->designated_bridge_id)) ||
- ((v1->root_bridge_id == v2->root_bridge_id) &&
- (v1->root_path_cost == v2->root_path_cost) &&
- (v1->designated_bridge_id == v2->designated_bridge_id) &&
- (v1->designated_port_id < v2->designated_port_id))) {
+ if (v1->root_bridge_id < v2->root_bridge_id
+ || (v1->root_bridge_id == v2->root_bridge_id &&
+ v1->root_path_cost < v2->root_path_cost)
+ || (v1->root_bridge_id == v2->root_bridge_id &&
+ v1->root_path_cost == v2->root_path_cost &&
+ v1->designated_bridge_id < v2->designated_bridge_id)
+ || (v1->root_bridge_id == v2->root_bridge_id &&
+ v1->root_path_cost == v2->root_path_cost &&
+ v1->designated_bridge_id == v2->designated_bridge_id &&
+ v1->designated_port_id < v2->designated_port_id)) {
VLOG_DBG("superior_absolute");
return SUPERIOR;
- }
- else if (((v1->root_bridge_id > v2->root_bridge_id) ||
- ((v1->root_bridge_id == v2->root_bridge_id) &&
- (v1->root_path_cost > v2->root_path_cost)) ||
- ((v1->root_bridge_id == v2->root_bridge_id) &&
- (v1->root_path_cost == v2->root_path_cost) &&
- (v1->designated_bridge_id > v2->designated_bridge_id)) ||
- ((v1->root_bridge_id == v2->root_bridge_id) &&
- (v1->root_path_cost == v2->root_path_cost) &&
- (v1->designated_bridge_id == v2->designated_bridge_id) &&
- (v1->designated_port_id > v2->designated_port_id))) &&
- (v1->designated_bridge_id == v2->designated_bridge_id) &&
- (v1->designated_port_id == v2->designated_port_id)) {
+ } else if ((v1->root_bridge_id > v2->root_bridge_id
+ || (v1->root_bridge_id == v2->root_bridge_id &&
+ v1->root_path_cost > v2->root_path_cost)
+ || (v1->root_bridge_id == v2->root_bridge_id &&
+ v1->root_path_cost == v2->root_path_cost &&
+ v1->designated_bridge_id > v2->designated_bridge_id)
+ || (v1->root_bridge_id == v2->root_bridge_id &&
+ v1->root_path_cost == v2->root_path_cost &&
+ v1->designated_bridge_id == v2->designated_bridge_id &&
+ v1->designated_port_id > v2->designated_port_id))
+ && v1->designated_bridge_id == v2->designated_bridge_id
+ && v1->designated_port_id == v2->designated_port_id) {
VLOG_DBG("superior_same_des");
return SUPERIOR;
- }
- else if ((v1->root_bridge_id == v2->root_bridge_id) &&
- (v1->root_path_cost == v2->root_path_cost) &&
- (v1->designated_bridge_id == v2->designated_bridge_id) &&
- (v1->designated_port_id == v2->designated_port_id)) {
+ } else if (v1->root_bridge_id == v2->root_bridge_id &&
+ v1->root_path_cost == v2->root_path_cost &&
+ v1->designated_bridge_id == v2->designated_bridge_id &&
+ v1->designated_port_id == v2->designated_port_id) {
VLOG_DBG("same");
return SAME;
- }
- else {
+ } else {
VLOG_DBG("inferior");
return INFERIOR;
}
}
static bool
-rstp_times_equal(struct rstp_times *t1, struct rstp_times *t2) {
- return ((t1->forward_delay == t2->forward_delay) &&
- (t1->hello_time == t2->hello_time) &&
- (t1->max_age == t2->max_age) &&
- (t1->message_age == t2->message_age));
+rstp_times_equal(struct rstp_times *t1, struct rstp_times *t2)
+{
+ return t1->forward_delay == t2->forward_delay
+ && t1->hello_time == t2->hello_time
+ && t1->max_age == t2->max_age
+ && t1->message_age == t2->message_age;
}
--
1.7.10.4
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