static void
handle_delete_filter_request( const messenger_context_handle *handle, delete_packetin_filter_request *request ) {
assert( handle != NULL );
assert( request != NULL );
buffer *buf = alloc_buffer_with_length( sizeof( delete_packetin_filter_reply ) );
delete_packetin_filter_reply *reply = append_back_buffer( buf, sizeof( delete_packetin_filter_reply ) );
reply->status = PACKETIN_FILTER_OPERATION_SUCCEEDED;
reply->n_deleted = 0;
struct ofp_match match;
ntoh_match( &match, &request->criteria.match );
uint16_t priority = ntohs( request->criteria.priority );
if ( request->flags & PACKETIN_FILTER_FLAG_MATCH_STRICT ) {
int n_deleted = delete_packetin_match_entry( match, priority, request->criteria.service_name );
reply->n_deleted += ( uint32_t ) n_deleted;
}
else {
map_match_table( match, delete_filter_walker, buf );
}
reply->n_deleted = htonl( reply->n_deleted );
bool ret = send_reply_message( handle, MESSENGER_DELETE_PACKETIN_FILTER_REPLY, buf->data, buf->length );
free_buffer( buf );
if ( ret == false ) {
error( "Failed to send a dump filter reply." );
}
}
static void
handle_dump_filter_request( const messenger_context_handle *handle, dump_packetin_filter_request *request ) {
assert( handle != NULL );
assert( request != NULL );
buffer *buf = alloc_buffer_with_length( 2048 );
dump_packetin_filter_reply *reply = append_back_buffer( buf, offsetof( dump_packetin_filter_reply, entries ) );
reply->status = PACKETIN_FILTER_OPERATION_SUCCEEDED;
reply->n_entries = 0;
struct ofp_match match;
ntoh_match( &match, &request->criteria.match );
uint16_t priority = ntohs( request->criteria.priority );
if ( request->flags & PACKETIN_FILTER_FLAG_MATCH_STRICT ) {
list_element *services = lookup_match_strict_entry( match, priority );
while ( services != NULL ) {
if ( strcmp( services->data, request->criteria.service_name ) == 0 ) {
packetin_filter_entry *entry = append_back_buffer( buf, sizeof( packetin_filter_entry ) );
reply->n_entries++;
entry->match = request->criteria.match;
entry->priority = request->criteria.priority;
strncpy( entry->service_name, services->data, sizeof( entry->service_name ) );
entry->service_name[ sizeof( entry->service_name ) - 1 ] = '\0';
}
services = services->next;
}
}
else {
map_match_table( match, dump_filter_walker, buf );
}
reply->n_entries = htonl( reply->n_entries );
bool ret = send_reply_message( handle, MESSENGER_DUMP_PACKETIN_FILTER_REPLY, buf->data, buf->length );
free_buffer( buf );
if ( ret == false ) {
error( "Failed to send a dump packetin filter reply." );
}
}
static void
handle_add_filter_request( const messenger_context_handle *handle, add_packetin_filter_request *request ) {
assert( handle != NULL );
assert( request != NULL );
request->entry.service_name[ MESSENGER_SERVICE_NAME_LENGTH - 1 ] = '\0';
if ( strlen( request->entry.service_name ) == 0 ) {
error( "Service name must be specified." );
return;
}
struct ofp_match match;
ntoh_match( &match, &request->entry.match );
bool ret = add_packetin_match_entry( match, ntohs( request->entry.priority ), request->entry.service_name );
add_packetin_filter_reply reply;
memset( &reply, 0, sizeof( add_packetin_filter_reply ) );
reply.status = ( uint8_t ) ( ret ? PACKETIN_FILTER_OPERATION_SUCCEEDED : PACKETIN_FILTER_OPERATION_FAILED );
ret = send_reply_message( handle, MESSENGER_ADD_PACKETIN_FILTER_REPLY,
&reply, sizeof( add_packetin_filter_reply ) );
if ( ret == false ) {
error( "Failed to send an add filter reply." );
}
}
static void
ntoh_packetin_filter_entry( packetin_filter_entry *dst, packetin_filter_entry *src ) {
ntoh_match( &dst->match, &src->match );
dst->priority = ntohs( src->priority );
memcpy( dst->service_name, src->service_name, sizeof( dst->service_name ) );
}
