The OpenNET Project / Index page

[ новости /+++ | форум | теги | ]

Интерактивная система просмотра системных руководств (man-ов)

 ТемаНаборКатегория 
 
 [Cписок руководств | Печать]

ng_h4 (4)
  • >> ng_h4 (4) ( FreeBSD man: Специальные файлы /dev/* )

  • BSD mandoc
     

    NAME

    
    
    ng_h4
    
     - Netgraph node type that is also an H4 line discipline
    
     
    

    SYNOPSIS

       #include <sys/types.h>
       #include <netgraph/bluetooth/include/ng_h4.h>
     

    DESCRIPTION

    The h4 node type is both a persistent Netgraph node type and a H4 line discipline. It implements a Bluetooth HCI UART transport layer as per chapter H4 of the Bluetooth Specification Book v1.1. A new node is created when the corresponding line discipline, H4DISC is registered on a tty device (see tty(4)).

    The node has a single hook called hook Incoming bytes received on the tty device are re-assembled into HCI frames (according to the length). Full HCI frames are sent out on the hook. HCI frames received on hook are transmitted out on the tty device. No modification to the data is performed in either direction. While the line discipline is installed on a tty, the normal read and write operations are unavailable, returning Er EIO .

    Information about the node is available via the netgraph ioctl(2) command NGIOCGINFO This command returns a Vt struct nodeinfo similar to the NGM_NODEINFO netgraph(4) control message.  

    HOOKS

    This node type supports the following hooks:

    hook
    single HCI frame contained in single Vt mbuf structure.

     

    CONTROL MESSAGES

    This node type supports the generic control messages, plus the following:

    NGM_H4_NODE_RESET
    Reset the node.
    NGM_H4_NODE_GET_STATE
    Returns current receiving state for the node.
    NGM_H4_NODE_GET_DEBUG
    Returns an integer containing the current debug level for the node.
    NGM_H4_NODE_SET_DEBUG
    This command takes an integer argument and sets current debug level for the node.
    NGM_H4_NODE_GET_QLEN
    Returns current length of outgoing queue for the node.
    NGM_H4_NODE_SET_QLEN
    This command takes an integer argument and sets maximum length of outgoing queue for the node.
    NGM_H4_NODE_GET_STAT
    Returns various statistic information for the node, such as: number of bytes (frames) sent, number of bytes (frames) received and number of input (output) errors.
    NGM_H4_NODE_RESET_STAT
    Reset all statistic counters to zero.

     

    SHUTDOWN

    This node shuts down when the corresponding device is closed (or the line discipline is uninstalled on the device).  

    SEE ALSO

    ioctl(2), netgraph(4), tty(4), ngctl(8)  

    HISTORY

    The h4 node type was implemented in Fx 5.0 .  

    AUTHORS

    An Maksim Yevmenkin Aq m_evmenkin@yahoo.com  

    BUGS

    This node still uses spltty(9) to lock tty layer. This is wrong.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    HOOKS
    CONTROL MESSAGES
    SHUTDOWN
    SEE ALSO
    HISTORY
    AUTHORS
    BUGS


    Поиск по тексту MAN-ов: 




    Партнёры:
    PostgresPro
    Inferno Solutions
    Hosting by Hoster.ru
    Хостинг:

    Закладки на сайте
    Проследить за страницей
    Created 1996-2024 by Maxim Chirkov
    Добавить, Поддержать, Вебмастеру