315 lines
10 KiB
C
315 lines
10 KiB
C
/****************************************************************************
|
|
* net/uip/uip-poll.c
|
|
*
|
|
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
|
*
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
#ifdef CONFIG_NET
|
|
|
|
#include <sys/types.h>
|
|
#include <debug.h>
|
|
|
|
#include <net/uip/uipopt.h>
|
|
#include <net/uip/uip.h>
|
|
#include <net/uip/uip-arch.h>
|
|
|
|
#include "uip-internal.h"
|
|
|
|
/****************************************************************************
|
|
* Private Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Function: uip_polludpconnections
|
|
*
|
|
* Description:
|
|
* Poll all UDP connections for available packets to send.
|
|
*
|
|
* Assumptions:
|
|
* This function is called from the CAN device driver and may be called from
|
|
* the timer interrupt/watchdog handle level.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#if defined(CONFIG_NET_ICMP) && defined(CONFIG_NET_ICMP_PING)
|
|
static inline int uip_pollicmp(struct uip_driver_s *dev, uip_poll_callback_t callback)
|
|
{
|
|
/* Perform the UDP TX poll */
|
|
|
|
uip_icmppoll(dev);
|
|
|
|
/* Call back into the driver */
|
|
|
|
return callback(dev);
|
|
}
|
|
#endif /* CONFIG_NET_UDP */
|
|
|
|
/****************************************************************************
|
|
* Function: uip_polludpconnections
|
|
*
|
|
* Description:
|
|
* Poll all UDP connections for available packets to send.
|
|
*
|
|
* Assumptions:
|
|
* This function is called from the CAN device driver and may be called from
|
|
* the timer interrupt/watchdog handle level.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_NET_UDP
|
|
static int uip_polludpconnections(struct uip_driver_s *dev,
|
|
uip_poll_callback_t callback)
|
|
{
|
|
struct uip_udp_conn *udp_conn = NULL;
|
|
int bstop = 0;
|
|
|
|
/* Traverse all of the allocated UDP connections and perform the poll action */
|
|
|
|
while (!bstop && (udp_conn = uip_nextudpconn(udp_conn)))
|
|
{
|
|
/* Perform the UDP TX poll */
|
|
|
|
uip_udppoll(dev, udp_conn);
|
|
|
|
/* Call back into the driver */
|
|
|
|
bstop = callback(dev);
|
|
}
|
|
|
|
return bstop;
|
|
}
|
|
#endif /* CONFIG_NET_UDP */
|
|
|
|
/****************************************************************************
|
|
* Function: uip_polltcpconnections
|
|
*
|
|
* Description:
|
|
* Poll all UDP connections for available packets to send.
|
|
*
|
|
* Assumptions:
|
|
* This function is called from the CAN device driver and may be called from
|
|
* the timer interrupt/watchdog handle level.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_NET_TCP
|
|
static inline int uip_polltcpconnections(struct uip_driver_s *dev,
|
|
uip_poll_callback_t callback)
|
|
{
|
|
struct uip_conn *conn = NULL;
|
|
int bstop = 0;
|
|
|
|
/* Traverse all of the active TCP connections and perform the poll action */
|
|
|
|
while (!bstop && (conn = uip_nexttcpconn(conn)))
|
|
{
|
|
/* Perform the TCP TX poll */
|
|
|
|
uip_tcppoll(dev, conn);
|
|
|
|
/* Call back into the driver */
|
|
|
|
bstop = callback(dev);
|
|
}
|
|
|
|
return bstop;
|
|
}
|
|
#else
|
|
# define uip_polltcpconnections(dev, callback) (0)
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Function: uip_polltcptimer
|
|
*
|
|
* Description:
|
|
* The TCP timer has expired. Update TCP timing state in each active,
|
|
* TCP connection.
|
|
*
|
|
* Assumptions:
|
|
* This function is called from the CAN device driver and may be called from
|
|
* the timer interrupt/watchdog handle level.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_NET_TCP
|
|
static inline int uip_polltcptimer(struct uip_driver_s *dev,
|
|
uip_poll_callback_t callback, int hsec)
|
|
{
|
|
struct uip_conn *conn = NULL;
|
|
int bstop = 0;
|
|
|
|
/* Traverse all of the active TCP connections and perform the poll action */
|
|
|
|
while (!bstop && (conn = uip_nexttcpconn(conn)))
|
|
{
|
|
/* Perform the TCP timer poll */
|
|
|
|
uip_tcptimer(dev, conn, hsec);
|
|
|
|
/* Call back into the driver */
|
|
|
|
bstop = callback(dev);
|
|
}
|
|
|
|
return bstop;
|
|
}
|
|
#else
|
|
# define uip_polltcptimer(dev, callback, hsec) (0)
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Function: uip_poll
|
|
*
|
|
* Description:
|
|
* This function will traverse each active uIP connection structure and
|
|
* will perform TCP and UDP polling operations. uip_poll() may be called
|
|
* asychronously with the network drvier can accept another outgoing packet.
|
|
*
|
|
* This function will call the provided callback function for every active
|
|
* connection. Polling will continue until all connections have been polled
|
|
* or until the user-suplied function returns a non-zero value (which it
|
|
* should do only if it cannot accept further write data).
|
|
*
|
|
* When the callback function is called, there may be an outbound packet
|
|
* waiting for service in the uIP packet buffer, and if so the d_len field
|
|
* is set to a value larger than zero. The device driver should then send
|
|
* out the packet.
|
|
*
|
|
* Assumptions:
|
|
* This function is called from the CAN device driver and may be called from
|
|
* the timer interrupt/watchdog handle level.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int uip_poll(struct uip_driver_s *dev, uip_poll_callback_t callback)
|
|
{
|
|
int bstop;
|
|
|
|
/* Traverse all of the active TCP connections and perform the poll action */
|
|
|
|
bstop = uip_polltcpconnections(dev, callback);
|
|
if (!bstop)
|
|
{
|
|
#ifdef CONFIG_NET_UDP
|
|
/* Traverse all of the allocated UDP connections and perform the poll action */
|
|
|
|
bstop = uip_polludpconnections(dev, callback);
|
|
if (!bstop)
|
|
#endif
|
|
{
|
|
#if defined(CONFIG_NET_ICMP) && defined(CONFIG_NET_ICMP_PING)
|
|
/* Traverse all of the tasks waiting to send an ICMP ECHO request */
|
|
|
|
bstop = uip_pollicmp(dev, callback);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
return bstop;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Function: uip_timer
|
|
*
|
|
* Description:
|
|
* These function will traverse each active uIP connection structure and
|
|
* perform TCP timer operations (and UDP polling operations). The CAN
|
|
* driver MUST implement logic to periodically call uip_timer().
|
|
*
|
|
* This function will call the provided callback function for every active
|
|
* connection. Polling will continue until all connections have been polled
|
|
* or until the user-suplied function returns a non-zero value (which it
|
|
* should do only if it cannot accept further write data).
|
|
*
|
|
* When the callback function is called, there may be an outbound packet
|
|
* waiting for service in the uIP packet buffer, and if so the d_len field
|
|
* is set to a value larger than zero. The device driver should then send
|
|
* out the packet.
|
|
*
|
|
* Assumptions:
|
|
* This function is called from the CAN device driver and may be called from
|
|
* the timer interrupt/watchdog handle level.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int uip_timer(struct uip_driver_s *dev, uip_poll_callback_t callback, int hsec)
|
|
{
|
|
int bstop;
|
|
|
|
/* Increment the timer used by the IP reassembly logic */
|
|
|
|
#if UIP_REASSEMBLY
|
|
if (uip_reasstmr != 0 && uip_reasstmr < UIP_REASS_MAXAGE)
|
|
{
|
|
uip_reasstmr += hsec;
|
|
}
|
|
#endif /* UIP_REASSEMBLY */
|
|
|
|
/* Traverse all of the active TCP connections and perform the timer action */
|
|
|
|
bstop = uip_polltcptimer(dev, callback, hsec);
|
|
if (!bstop)
|
|
{
|
|
/* Traverse all of the allocated UDP connections and perform the poll action */
|
|
|
|
#ifdef CONFIG_NET_UDP
|
|
bstop = uip_polludpconnections(dev, callback);
|
|
if (!bstop)
|
|
#endif
|
|
{
|
|
#if defined(CONFIG_NET_ICMP) && defined(CONFIG_NET_ICMP_PING)
|
|
/* Traverse all of the tasks waiting to send an ICMP ECHO request */
|
|
|
|
bstop = uip_pollicmp(dev, callback);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
return bstop;
|
|
}
|
|
|
|
#endif /* CONFIG_NET */
|