tor/src/trunnel/channelpadding_negotiation.trunnel

const CHANNELPADDING_COMMAND_STOP = 1;
const CHANNELPADDING_COMMAND_START = 2;

/* This command tells the relay to alter its min and max netflow
   timeout range values, and send padding at that rate (resuming
   if stopped). */
struct channelpadding_negotiate {
  u8 version IN [0];
  u8 command IN [CHANNELPADDING_COMMAND_START, CHANNELPADDING_COMMAND_STOP];

  /* Min must not be lower than the current consensus parameter
     nf_ito_low. */
  u16 ito_low_ms;

  /* Max must not be lower than ito_low_ms */
  u16 ito_high_ms;
};