SCTP_IERROR_AUTH_BAD_HMAC 4222 net/sctp/sm_statefuns.c return SCTP_IERROR_AUTH_BAD_HMAC; SCTP_IERROR_AUTH_BAD_HMAC 4306 net/sctp/sm_statefuns.c case SCTP_IERROR_AUTH_BAD_HMAC: