OFDPE
get_table_stats( table_stats **stats, uint8_t *n_tables ) {
assert( stats != NULL );
assert( n_tables != NULL );
if ( !lock_pipeline() ) {
return ERROR_LOCK;
}
*stats = xmalloc( sizeof( table_stats ) * N_FLOW_TABLES );
memset( *stats, 0, sizeof( table_stats ) * N_FLOW_TABLES );
*n_tables = 0;
table_stats *stat = *stats;
for ( uint8_t i = 0; i <= FLOW_TABLE_ID_MAX; i++ ) {
stat->table_id = i;
stat->active_count = get_active_count( i );
stat->lookup_count = get_lookup_count( i );
stat->matched_count = get_matched_count( i );
stat++;
( *n_tables )++;
}
if ( !unlock_pipeline() ) {
return ERROR_UNLOCK;
}
return OFDPE_SUCCESS;
}
OFDPE
delete_flow_entries_by_group_id( const uint32_t group_id ) {
assert( valid_group_id( group_id ) );
if ( !lock_pipeline() ) {
return ERROR_LOCK;
}
list_element *delete_us = NULL;
create_list( &delete_us );
for ( uint8_t table_id = 0; table_id <= FLOW_TABLE_ID_MAX; table_id++ ) {
flow_table *table = get_flow_table( table_id );
assert( table != NULL );
for ( list_element *e = table->entries; e != NULL; e = e->next ) {
assert( e->data != NULL );
flow_entry *entry = e->data;
if ( instructions_have_output_group( entry->instructions, group_id ) ) {
append_to_tail( &delete_us, e->data );
}
}
}
delete_flow_entries_in_list( delete_us, 0, 0, OFPP_ANY, OFPG_ANY, OFPRR_GROUP_DELETE );
if ( delete_us != NULL ) {
delete_list( delete_us );
}
if ( !unlock_pipeline() ) {
return ERROR_UNLOCK;
}
return OFDPE_SUCCESS;
}
void
dump_flow_table( const uint8_t table_id, void dump_function( const char *format, ... ) ) {
assert( valid_table_id( table_id ) );
assert( dump_function != NULL );
if ( !lock_pipeline() ) {
return;
}
flow_table *table = get_flow_table( table_id );
assert( table != NULL );
( *dump_function )( "#### TABLE %#x (%s) ####", table_id, table->initialized ? "initialized" : "not initialized yet" );
( *dump_function )( "[Features]" );
( *dump_function )( "table_id: %#x", table->features.table_id );
( *dump_function )( "name: %s", table->features.name );
( *dump_function )( "metadata_match: %#" PRIx64, table->features.metadata_match );
( *dump_function )( "metadata_write: %#" PRIx64, table->features.metadata_write );
( *dump_function )( "config: %#x", table->features.config );
( *dump_function )( "max_entries: %u", table->features.max_entries );
( *dump_function )( "instructions: %#" PRIx64, table->features.instructions );
( *dump_function )( "instructions_miss: %#" PRIx64, table->features.instructions_miss );
( *dump_function )( "write_actions: %#" PRIx64, table->features.write_actions );
( *dump_function )( "write_actions_miss: %#" PRIx64, table->features.write_actions_miss );
( *dump_function )( "apply_actions: %#" PRIx64, table->features.apply_actions );
( *dump_function )( "apply_actions_miss: %#" PRIx64, table->features.apply_actions_miss );
( *dump_function )( "matches: %#" PRIx64, table->features.matches );
( *dump_function )( "wildcards: %#" PRIx64, table->features.wildcards );
( *dump_function )( "write_setfield: %#" PRIx64, table->features.write_setfield );
( *dump_function )( "write_setfield_miss: %#" PRIx64, table->features.write_setfield_miss );
( *dump_function )( "apply_setfield: %#" PRIx64, table->features.apply_setfield );
( *dump_function )( "apply_setfield_miss: %#" PRIx64, table->features.apply_setfield_miss );
for ( uint8_t i = 0; i < N_FLOW_TABLES; i++ ) {
if ( !table->features.next_table_ids[ i ] ) {
( *dump_function )( "next_table_id: %#x - %s", i, table->features.next_table_ids[ i ] ? "true" : "false" );
}
}
for ( uint8_t i = 0; i < N_FLOW_TABLES; i++ ) {
if ( !table->features.next_table_ids_miss[ i ] ) {
( *dump_function )( "next_table_id_miss: %#x - %s", i, table->features.next_table_ids_miss[ i ] ? "true" : "false" );
}
}
( *dump_function )( "[Stats]" );
( *dump_function )( "active_count: %u", table->counters.active_count );
( *dump_function )( "lookup_count: %" PRIu64, table->counters.lookup_count );
( *dump_function )( "matched_count: %" PRIu64, table->counters.matched_count );
( *dump_function )( "[Entries]" );
for ( list_element *e = table->entries; e != NULL; e = e->next ) {
flow_entry *entry = e->data;
assert( entry != NULL );
dump_flow_entry( entry, dump_function );
}
unlock_pipeline();
}
OFDPE
update_flow_entry_strict( const uint8_t table_id, const match *match, const uint64_t cookie, const uint64_t cookie_mask,
const uint16_t priority, const uint16_t flags, instruction_set *instructions ) {
/*
* FLOW_TABLE_ALL (=OFPTT_ALL) is not allowed in the protocol specification.
* But we allow it for internal use.
*/
if ( !valid_table_id( table_id ) && table_id != FLOW_TABLE_ALL ) {
return ERROR_OFDPE_FLOW_MOD_FAILED_BAD_TABLE_ID;
}
if ( match == NULL ) {
error( "Invalid match ( %p ).", match );
return ERROR_INVALID_PARAMETER;
}
if ( instructions == NULL ) {
error( "Invalid instruction set ( %p ).", instructions );
return ERROR_INVALID_PARAMETER;
}
if ( !lock_pipeline() ) {
return ERROR_LOCK;
}
flow_table *table = get_flow_table( table_id );
assert( table != NULL );
OFDPE ret = validate_instruction_set( instructions, table->features.metadata_write );
if ( ret != OFDPE_SUCCESS ) {
error( "Invalid instruction set ( ret = %#x, instructions = %p ).", ret, instructions );
return ret;
}
list_element *list = NULL;
if ( table_id != FLOW_TABLE_ALL ) {
list = lookup_flow_entries_with_table_id( table_id, match, priority, true, false );
}
else {
list = lookup_flow_entries_from_all_tables( match, priority, true, false );
}
update_flow_entries_in_list( list, cookie, cookie_mask, flags, instructions );
if ( list != NULL ) {
delete_list( list );
}
if ( !unlock_pipeline() ) {
return ERROR_UNLOCK;
}
return OFDPE_SUCCESS;
}
OFDPE
unref_meter_id( const uint32_t meter_id ) {
if ( meter_id == 0 || meter_id > OFPM_MAX ) {
return ERROR_OFDPE_METER_MOD_FAILED_INVALID_METER;
}
if ( !lock_pipeline() ) {
return ERROR_UNLOCK;
}
meter_entry *entry = lookup_meter_entry( meter_id );
if ( entry == NULL ) {
return ERROR_OFDPE_METER_MOD_FAILED_UNKNOWN_METER;
}
entry->ref_count--;
if ( !unlock_pipeline() ) {
return ERROR_UNLOCK;
}
return OFDPE_SUCCESS;
}
void
decrement_reference_count( const uint32_t group_id ) {
assert( table != NULL );
assert( valid_group_id( group_id ) );
if ( !lock_pipeline() ) {
error( "Failed to lock pipeline." );
return;
}
group_entry *entry = lookup_group_entry( group_id );
if ( entry != NULL ) {
entry->ref_count--;
}
if ( !unlock_pipeline() ) {
error( "Failed to unlock pipeline." );
}
}
static void
age_flow_entries( void *user_data ) {
const uint8_t table_id = *( uint8_t * ) user_data;
assert( valid_table_id( table_id ) );
if ( !lock_pipeline() ) {
return;
}
struct timespec now = { 0, 0 };
time_now( &now );
foreach_flow_entry( table_id, age_flow_entries_walker, &now );
if ( !unlock_pipeline() ) {
return;
}
}
OFDPE
get_group_desc( group_desc **stats, uint16_t *n_groups ) {
assert( table != NULL );
assert( n_groups != NULL );
if ( !lock_pipeline() ) {
return ERROR_LOCK;
}
*n_groups = 0;
for ( list_element *element = table->entries; element != NULL; element = element->next ) {
if ( element->data == NULL ) {
continue;
}
( *n_groups )++;
}
size_t length = sizeof( group_desc ) * ( *n_groups );
*stats = NULL;
if ( *n_groups > 0 ) {
*stats = xmalloc( length );
memset( *stats, 0, length );
}
group_desc *stat = *stats;
for ( list_element *element = table->entries; element != NULL; element = element->next ) {
if ( element->data == NULL ) {
continue;
}
group_entry *entry = element->data;
stat->type = entry->type;
stat->group_id = entry->group_id;
stat->buckets = duplicate_buckets( entry->buckets );
stat++;
}
if ( !unlock_pipeline() ) {
return ERROR_UNLOCK;
}
return OFDPE_SUCCESS;
}
OFDPE
delete_port( const uint32_t port_no ) {
assert( port_no > 0 && port_no <= OFPP_MAX );
if ( datapath_is_running() && !lock_pipeline() ) {
return ERROR_LOCK;
}
OFDPE ret = delete_ether_device_from_switch( port_no );
if ( ret != OFDPE_SUCCESS ) {
error( "Failed to delete an Ethernet port from a switch ( ret = %d, port_no = %u ).",
ret, port_no );
}
if ( datapath_is_running() && !unlock_pipeline() ) {
return ERROR_UNLOCK;
}
return ret;
}
OFDPE
add_port( const uint32_t port_no, const char *device_name ) {
assert( port_no <= OFPP_MAX );
assert( device_name != NULL );
if ( datapath_is_running() && !lock_pipeline() ) {
return ERROR_LOCK;
}
OFDPE ret = add_ether_device_as_switch_port( device_name, port_no );
if ( ret != OFDPE_SUCCESS ) {
error( "Failed to add an Ethernet port as a switch port ( ret = %d, port_no = %u, device_name = %s ).",
ret, port_no, device_name );
}
if ( datapath_is_running() && !unlock_pipeline() ) {
return ERROR_UNLOCK;
}
return ret;
}
OFDPE
delete_meter_entry( const uint32_t meter_id ) {
assert( table != NULL );
if ( meter_id == 0 && meter_id <= OFPM_MAX && meter_id != OFPM_CONTROLLER && meter_id != OFPM_ALL ) {
return ERROR_OFDPE_METER_MOD_FAILED_INVALID_METER;
}
OFDPE ret = OFDPE_SUCCESS;
if ( !lock_pipeline() ) {
return ERROR_LOCK;
}
if ( meter_id == OFPM_ALL ) {
delete_flow_entries_by_meter_id( meter_id );
for ( list_element *e = table->entries; e != NULL; ) {
list_element *next = e->next;
meter_entry *entry = e->data;
if ( entry->meter_id > 0 && entry->meter_id <= OFPM_MAX ) { // virtual meters won't be deleted by OFPM_ALL
delete_element( &table->entries, entry );
free_meter_entry( entry );
}
e = next;
}
} else {
meter_entry *old_entry = lookup_meter_entry( meter_id );
if ( NULL == old_entry ) {
ret = ERROR_OFDPE_METER_MOD_FAILED_UNKNOWN_METER;
} else {
if ( old_entry->ref_count > 0 ) {
delete_flow_entries_by_meter_id( meter_id );
}
delete_element( &table->entries, old_entry );
free_meter_entry( old_entry );
}
}
if ( !unlock_pipeline() ) {
return ERROR_UNLOCK;
}
return ret;
}
OFDPE
replace_meter_entry( const uint16_t flags, const uint32_t meter_id, const list_element *bands ) {
assert( table != NULL );
if ( meter_id == 0 || ( meter_id > OFPM_MAX && meter_id != OFPM_CONTROLLER )) {
return ERROR_OFDPE_METER_MOD_FAILED_INVALID_METER;
}
meter_entry *entry = alloc_meter_entry( flags, meter_id, bands );
if ( entry == NULL ) {
return ERROR_INVALID_PARAMETER;
}
OFDPE ret = OFDPE_SUCCESS;
if ( !lock_pipeline() ) {
free_meter_entry( entry );
return ERROR_LOCK;
}
meter_entry *old_entry = lookup_meter_entry( entry->meter_id );
if ( NULL == old_entry ) {
ret = ERROR_OFDPE_METER_MOD_FAILED_UNKNOWN_METER;
free_meter_entry( entry );
} else {
entry->ref_count = old_entry->ref_count;
entry->packet_count = old_entry->packet_count;
entry->byte_count = old_entry->byte_count;
entry->estimated_rate = old_entry->estimated_rate;
entry->created_at = old_entry->created_at;
entry->meter_at = old_entry->meter_at;
delete_element( &table->entries, old_entry );
append_to_tail( &table->entries, entry );
free_meter_entry( old_entry );
}
if ( !unlock_pipeline() ) {
free_meter_entry( entry );
return ERROR_UNLOCK;
}
return ret;
}
OFDPE
update_group_entry( const uint32_t group_id, const uint8_t type, bucket_list *buckets ) {
assert( table != NULL );
if ( !valid_group_id( group_id ) ) {
return ERROR_OFDPE_GROUP_MOD_FAILED_INVALID_GROUP;
}
if ( !valid_group_type( type ) ) {
return ERROR_OFDPE_GROUP_MOD_FAILED_INVALID_GROUP;
}
if ( !lock_pipeline() ) {
return ERROR_LOCK;
}
OFDPE ret = OFDPE_SUCCESS;
group_entry *entry = lookup_group_entry( group_id );
if ( entry == NULL ) {
ret = ERROR_OFDPE_GROUP_MOD_FAILED_UNKNOWN_GROUP;
}
if ( ret == OFDPE_SUCCESS ) {
ret = validate_buckets( entry->type, buckets );
}
if ( ret == OFDPE_SUCCESS ) {
if ( entry->buckets != NULL ) {
delete_action_bucket_list( entry->buckets );
}
entry->type = type;
entry->buckets = buckets;
}
if ( !unlock_pipeline() ) {
return ERROR_UNLOCK;
}
return ret;
}
OFDPE
delete_group_entry( const uint32_t group_id ) {
assert( table != NULL );
if ( !valid_group_id( group_id ) ) {
return ERROR_OFDPE_GROUP_MOD_FAILED_INVALID_GROUP;
}
if ( !lock_pipeline() ) {
return ERROR_LOCK;
}
if ( group_id != OFPG_ALL ) {
group_entry *entry = lookup_group_entry( group_id );
if ( entry != NULL ) {
delete_element( &table->entries, entry );
delete_flow_entries_by_group_id( entry->group_id );
free_group_entry( entry );
}
}
else {
for ( list_element *element = table->entries; element != NULL; element = element->next ) {
if ( element->data == NULL ) {
continue;
}
group_entry *entry = element->data;
delete_flow_entries_by_group_id( entry->group_id );
free_group_entry( entry );
}
delete_list( table->entries );
create_list( &table->entries );
}
if ( !unlock_pipeline() ) {
return ERROR_UNLOCK;
}
return OFDPE_SUCCESS;
}
list_element *
lookup_flow_entries( const uint8_t table_id, const match *match ) {
assert( valid_table_id( table_id ) || table_id == FLOW_TABLE_ALL );
if ( !lock_pipeline() ) {
return NULL;
}
list_element *list = NULL;
if ( table_id != FLOW_TABLE_ALL ) {
list = lookup_flow_entries_with_table_id( table_id, match, 0, false, true );
}
else {
list = lookup_flow_entries_from_all_tables( match, 0, false, true );
}
if ( !unlock_pipeline() ) {
delete_list( list );
return NULL;
}
return list;
}
OFDPE
add_flow_entry( const uint8_t table_id, flow_entry *entry, const uint16_t flags ) {
if ( !valid_table_id( table_id ) ) {
return ERROR_OFDPE_FLOW_MOD_FAILED_BAD_TABLE_ID;
}
if ( entry == NULL ) {
return ERROR_INVALID_PARAMETER;
}
if ( !lock_pipeline() ) {
return ERROR_LOCK;
}
flow_table *table = get_flow_table( table_id );
if ( table == NULL ) {
return ERROR_OFDPE_FLOW_MOD_FAILED_BAD_TABLE_ID;
}
if ( table->features.max_entries <= get_active_count( table_id ) ) {
return ERROR_OFDPE_FLOW_MOD_FAILED_TABLE_FULL;
}
OFDPE ret = validate_instruction_set( entry->instructions, table->features.metadata_write );
if ( ret == OFDPE_SUCCESS ) {
entry->table_id = table_id;
ret = insert_flow_entry( table, entry, flags );
if ( ret == OFDPE_SUCCESS ) {
increment_reference_counters_in_groups( entry->instructions );
}
}
if ( !unlock_pipeline() ) {
return ERROR_UNLOCK;
}
return ret;
}
OFDPE
update_or_add_flow_entry( const uint8_t table_id, const match *key,
const uint64_t cookie, const uint64_t cookie_mask,
const uint16_t priority, const uint16_t idle_timeout, const uint16_t hard_timeout,
const uint16_t flags, const bool strict, instruction_set *instructions ) {
if ( !valid_table_id( table_id ) ) {
return ERROR_OFDPE_FLOW_MOD_FAILED_BAD_TABLE_ID;
}
if ( key == NULL ) {
error( "Invalid match ( %p ).", key );
return ERROR_INVALID_PARAMETER;
}
if ( instructions == NULL ) {
error( "Invalid instruction set ( %p ).", instructions );
return ERROR_INVALID_PARAMETER;
}
if ( !lock_pipeline() ) {
return ERROR_LOCK;
}
flow_table *table = get_flow_table( table_id );
assert( table != NULL );
OFDPE ret = validate_instruction_set( instructions, table->features.metadata_write );
if ( ret != OFDPE_SUCCESS ) {
error( "Invalid instruction set ( ret = %#x, instructions = %p ).", ret, instructions );
unlock_pipeline();
return ret;
}
list_element *list = lookup_flow_entries_with_table_id( table_id, key, priority, strict, false );
if ( list != NULL ) {
update_flow_entries_in_list( list, cookie, cookie_mask, flags, instructions );
delete_list( list );
}
else {
match *duplicated_match = duplicate_match( key );
instruction_set *duplicated_instructions = duplicate_instructions( instructions );
flow_entry *entry = alloc_flow_entry( duplicated_match, duplicated_instructions,
priority, idle_timeout, hard_timeout, flags, cookie );
if ( entry != NULL ) {
ret = add_flow_entry( table_id, entry, flags );
if ( ret != OFDPE_SUCCESS ) {
error( "Failed to add flow entry ( table_id = %#x, entry = %p, flags = %#x ).", table_id, entry, flags );
}
}
else {
delete_match( duplicated_match );
delete_instructions( duplicated_instructions );
ret = OFDPE_FAILED;
}
}
if ( !unlock_pipeline() ) {
return ERROR_UNLOCK;
}
return ret;
}
OFDPE
get_flow_stats( const uint8_t table_id, const match *match, const uint64_t cookie, const uint64_t cookie_mask,
const uint32_t out_port, const uint32_t out_group, flow_stats **stats, uint32_t *n_entries ) {
assert( valid_table_id( table_id ) || table_id == FLOW_TABLE_ALL );
assert( stats != NULL );
assert( n_entries != NULL );
if ( !lock_pipeline() ) {
return ERROR_LOCK;
}
list_element *list = NULL;
if ( table_id != FLOW_TABLE_ALL ) {
list = lookup_flow_entries_with_table_id( table_id, match, 0, false, false );
}
else {
list = lookup_flow_entries_from_all_tables( match, 0, false, false );
}
*n_entries = 0;
list_element *entries = NULL;
create_list( &entries );
for ( list_element *e = list; e != NULL; e = e->next ) {
flow_entry *entry = e->data;
assert( entry != NULL );
bool matched = true;
if ( out_port != OFPP_ANY ) {
if ( !instructions_have_output_port( entry->instructions, out_port ) ) {
matched = false;
}
}
if ( out_group != OFPG_ANY ) {
if ( !instructions_have_output_group( entry->instructions, out_group ) ) {
matched = false;
}
}
if ( matched && cookie_mask != 0 ) {
if ( ( entry->cookie & cookie_mask ) != ( cookie & cookie_mask ) ) {
matched = false;
}
}
if ( matched ) {
( *n_entries )++;
append_to_tail( &entries, entry );
}
}
if ( list != NULL ) {
delete_list( list );
}
*stats = NULL;
if ( *n_entries > 0 ) {
*stats = xmalloc( sizeof( flow_stats ) * ( *n_entries ) );
memset( *stats, 0, sizeof( flow_stats ) * ( *n_entries ) );
}
struct timespec now = { 0, 0 };
time_now( &now );
struct timespec diff = { 0, 0 };
flow_stats *stat = *stats;
for ( list_element *e = entries; e != NULL; e = e->next ) {
flow_entry *entry = e->data;
stat->table_id = entry->table_id;
timespec_diff( entry->created_at, now, &diff );
stat->duration_sec = ( uint32_t ) diff.tv_sec;
stat->duration_nsec = ( uint32_t ) diff.tv_nsec;
stat->priority = entry->priority;
stat->idle_timeout = entry->idle_timeout;
stat->hard_timeout = entry->hard_timeout;
stat->flags = entry->flags;
stat->cookie = entry->cookie;
stat->packet_count = entry->packet_count;
stat->byte_count = entry->byte_count;
stat->match = *entry->match;
stat->instructions = *entry->instructions;
stat++;
}
if ( entries != NULL ) {
delete_list( entries );
}
if ( !unlock_pipeline() ) {
return ERROR_UNLOCK;
}
return OFDPE_SUCCESS;
}
OFDPE
get_group_stats( const uint32_t group_id, group_stats **stats, uint32_t *n_groups ) {
assert( table != NULL );
assert( stats != NULL );
assert( n_groups != NULL );
if ( !valid_group_id( group_id ) && group_id != OFPG_ALL ) {
return ERROR_OFDPE_BAD_REQUEST_BAD_TABLE_ID;
}
if ( !lock_pipeline() ) {
return ERROR_LOCK;
}
OFDPE ret = OFDPE_SUCCESS;
list_element *groups = NULL;
create_list( &groups );
*n_groups = 0;
if ( group_id != OFPG_ALL ) {
group_entry *entry = lookup_group_entry( group_id );
if ( entry == NULL ) {
if ( !unlock_pipeline() ) {
return ERROR_UNLOCK;
}
return ERROR_OFDPE_BAD_REQUEST_BAD_TABLE_ID;
}
append_to_tail( &groups, entry );
( *n_groups )++;
}
else {
for ( list_element *e = table->entries; e != NULL; e = e->next ) {
if ( e->data == NULL ) {
continue;
}
group_entry *entry = e->data;
append_to_tail( &groups, entry );
( *n_groups )++;
}
}
*stats = NULL;
if ( *n_groups > 0 ) {
*stats = xmalloc( sizeof( group_stats ) * ( *n_groups ) );
memset( *stats, 0, sizeof( group_stats ) * ( *n_groups ) );
}
group_stats *stat = *stats;
for ( list_element *e = groups; e != NULL; e = e->next ) {
assert( e->data != NULL );
group_entry *entry = e->data;
stat->group_id = entry->group_id;
stat->ref_count = entry->ref_count;
stat->packet_count = entry->packet_count;
stat->byte_count = entry->byte_count;
struct timespec now = { 0, 0 };
time_now( &now );
struct timespec diff = { 0, 0 };
timespec_diff( entry->created_at, now, &diff );
stat->duration_sec = ( uint32_t ) diff.tv_sec;
stat->duration_nsec = ( uint32_t ) diff.tv_nsec;
create_list( &stat->bucket_stats );
for ( dlist_element *b = get_first_element( entry->buckets ); b != NULL; b = b->next ) {
if ( b->data == NULL ) {
continue;
}
bucket *bucket = b->data;
bucket_counter *counter = xmalloc( sizeof( bucket_counter ) );
memset( counter, 0, sizeof( bucket_counter ) );
counter->packet_count = bucket->packet_count;
counter->byte_count = bucket->byte_count;
append_to_tail( &stat->bucket_stats, counter );
}
stat++;
}
if ( groups != NULL ) {
delete_list( groups );
}
if ( !unlock_pipeline() ) {
return ERROR_UNLOCK;
}
return ret;
}