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IEEE 802.11a/b/g 服务器端AP

/**
\mainpage Developers' documentation for hostapd

hostapd includes IEEE 802.11 access point management (authentication /
association), IEEE 802.1X/WPA/WPA2 Authenticator, EAP server, and
RADIUS authentication server functionality. It can be build with
various configuration option, e.g., a standalone AP management
solution or a RADIUS authentication server with support for number of
EAP methods.

The goal of this documentation and comments in the source code is to
give enough information for other developers to understand how hostapd
has been implemented, how it can be modified, how new drivers can be
supported, and how hostapd can be ported to other operating
systems. If any information is missing, feel free to contact Jouni
Malinen <[e-mail]> for more information. Contributions as
patch files are also very welcome at the same address. Please note
that hostapd is licensed under dual license, GPLv2 or BSD at user's
choice. All contributions to hostapd are expected to use compatible
licensing terms.

The source code and read-only access to hostapd CVS repository
is available from the project home page at
http://hostap.epitest.fi/hostapd/. This developers' documentation
is also available as a PDF file from
http://hostap.epitest.fi/hostapd/hostapd-devel.pdf .

The design goal for hostapd was to use hardware, driver, and
OS independent, portable C code for all WPA functionality. The source
code is divided into separate C files as shown on the \ref
code_structure "code structure page". All hardware/driver specific
functionality is in separate files that implement a \ref
driver_wrapper "well-defined driver API". Information about porting
to different target boards and operating systems is available on
the \ref porting "porting page".

EAPOL (IEEE 802.1X) state machines are implemented as a separate
module that interacts with \ref eap_module "EAP server implementation".
Similarly, RADIUS authentication server is in its own separate module.
Both IEEE 802.1X and RADIUS authentication server can use EAP server
functionality.

hostapd implements a \ref ctrl_iface_page "control interface" that can
be used by external programs to control the operations of the hostapdt
daemon and to get status information and event notifications. There is
a small C library that provides helper functions to facilitate the use
of the control interface. This library can also be used with C++.

\image html hostapd.png "hostapd modules"
\image latex hostapd.eps "hostapd modules" width=15cm

*/