static void
echo_reply_timeout( void *user_data ) {
UNUSED( user_data );
error( "Echo request timeout ( datapath id %#" PRIx64 ").", switch_info.datapath_id );
switch_event_disconnected( &switch_info );
}
int
switch_event_disconnect_request( uint64_t *datapath_id ) {
if ( *datapath_id != switch_info.datapath_id ) {
error( "Invalid datapath id %#" PRIx64 ".", *datapath_id );
return -1;
}
return switch_event_disconnected( &switch_info );
}
static void
registration_timeout( void *user_data ) {
struct switch_info *sw_info = user_data;
sw_info->running_timer = false;
error( "Registration timeout ( datapath id %#" PRIx64 " ).", sw_info->datapath_id );
switch_event_disconnected( sw_info );
}
static void
secure_channel_write( int fd, void* data ) {
UNUSED( fd );
UNUSED( data );
if ( flush_secure_channel( &switch_info ) < 0 ) {
switch_event_disconnected( &switch_info );
return;
}
}
static void
registration_retry( void *user_data ) {
struct switch_info *sw_info = user_data;
if ( sw_info->retry_count == 0 ) {
switch_event_disconnected( sw_info );
return;
}
sw_info->retry_count--;
sw_info->running_timer = false;
debug( "Checking switch manager's switch list." );
set_list_switches_reply_handler( confirm_self_dpid_is_registered );
if ( send_list_switches_request( sw_info ) ) {
switch_set_timeout( REGISTRATION_TIMEOUT, registration_timeout, sw_info );
}
else {
error( "Failed to send switch list request to switch manager." );
switch_event_disconnected( sw_info );
}
}
static void
secure_channel_fd_isset( fd_set *read_set, fd_set *write_set ) {
if ( switch_info.secure_channel_fd < 0 ) {
return;
}
if ( FD_ISSET( switch_info.secure_channel_fd, read_set ) ) {
if ( recv_from_secure_channel( &switch_info ) < 0 ) {
switch_event_disconnected( &switch_info );
return;
}
}
if ( FD_ISSET( switch_info.secure_channel_fd, write_set ) ) {
if ( flush_secure_channel( &switch_info ) < 0 ) {
switch_event_disconnected( &switch_info );
return;
}
}
if ( switch_info.recv_queue->length > 0 ) {
handle_messages_from_secure_channel( &switch_info );
}
}
static void
switch_event_timeout_features_reply( void *user_data ) {
UNUSED( user_data );
if ( switch_info.state != SWITCH_STATE_WAIT_FEATURES_REPLY ) {
return;
}
switch_info.running_timer = false;
error( "Features Reply timeout. state:%d, dpid:%#" PRIx64 ", fd:%d.",
switch_info.state, switch_info.datapath_id, switch_info.secure_channel_fd );
switch_event_disconnected( &switch_info );
}
static void
switch_event_timeout_hello( void *user_data ) {
UNUSED( user_data );
if ( switch_info.state != SWITCH_STATE_WAIT_HELLO ) {
return;
}
switch_info.running_timer = false;
error( "Hello timeout. state:%d, dpid:%#" PRIx64 ", fd:%d.",
switch_info.state, switch_info.datapath_id, switch_info.secure_channel_fd );
switch_event_disconnected( &switch_info );
}
static void
switch_event_timeout_hello( void *user_data ) {
UNUSED( user_data );
if ( switch_info.state != SWITCH_STATE_WAIT_HELLO ) {
return;
}
// delete to hello_wait-timeout timer
switch_unset_timeout( switch_event_timeout_hello );
error( "Hello timeout. state:%d, dpid:%#" PRIx64 ", fd:%d.",
switch_info.state, switch_info.datapath_id, switch_info.secure_channel_fd );
switch_event_disconnected( &switch_info );
}
static void
secure_channel_read( int fd, void* data ) {
UNUSED( fd );
UNUSED( data );
if ( recv_from_secure_channel( &switch_info ) < 0 ) {
switch_event_disconnected( &switch_info );
return;
}
if ( switch_info.recv_queue->length > 0 ) {
int ret = handle_messages_from_secure_channel( &switch_info );
if ( ret < 0 ) {
stop_event_handler();
stop_messenger();
}
}
}
static void
echo_request_interval( void *user_data ) {
struct switch_info *sw_info = user_data;
buffer *buf = alloc_buffer();
echo_body *body = append_back_buffer( buf, sizeof( echo_body ) );
body->datapath_id = htonll( switch_info.datapath_id );
struct timespec now;
clock_gettime( CLOCK_MONOTONIC, &now );
body->sec = htonl( ( uint32_t ) now.tv_sec );
body->nsec = htonl( ( uint32_t ) now.tv_nsec );
sw_info->echo_request_xid = generate_xid();
int err = ofpmsg_send_echorequest( sw_info, sw_info->echo_request_xid, buf );
if ( err < 0 ) {
switch_event_disconnected( &switch_info );
return;
}
switch_set_timeout( ECHO_REPLY_TIMEOUT, echo_reply_timeout, NULL );
}
static void
stop_switch_daemon( void ) {
switch_event_disconnected( &switch_info );
}
