You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
353 lines
11 KiB
353 lines
11 KiB
/**************************************************************************** |
|
* net/uip/uip_poll.c |
|
* |
|
* Copyright (C) 2007-2010, 2012 Gregory Nutt. All rights reserved. |
|
* Author: Gregory Nutt <gnutt@nuttx.org> |
|
* |
|
* 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 <debug.h> |
|
|
|
#include <nuttx/net/uip/uipopt.h> |
|
#include <nuttx/net/uip/uip.h> |
|
#include <nuttx/net/uip/uip-arch.h> |
|
|
|
#include "uip_internal.h" |
|
|
|
/**************************************************************************** |
|
* Private Data |
|
****************************************************************************/ |
|
|
|
/**************************************************************************** |
|
* Private Functions |
|
****************************************************************************/ |
|
|
|
/**************************************************************************** |
|
* Function: uip_pollicmp |
|
* |
|
* 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_ICMP && CONFIG_NET_ICMP_PING */ |
|
|
|
/**************************************************************************** |
|
* Function: uip_polligmp |
|
* |
|
* 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_IGMP |
|
static inline int uip_polligmp(struct uip_driver_s *dev, uip_poll_callback_t callback) |
|
{ |
|
/* Perform the UDP TX poll */ |
|
|
|
uip_igmppoll(dev); |
|
|
|
/* Call back into the driver */ |
|
|
|
return callback(dev); |
|
} |
|
#endif /* CONFIG_NET_IGMP */ |
|
|
|
/**************************************************************************** |
|
* 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; |
|
|
|
/* Check for pendig IGMP messages */ |
|
|
|
#ifdef CONFIG_NET_IGMP |
|
bstop = uip_polligmp(dev, callback); |
|
if (!bstop) |
|
#endif |
|
{ |
|
/* 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 Ethernet |
|
* 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 */ |
|
|
|
/* Check for pendig IGMP messages */ |
|
|
|
#ifdef CONFIG_NET_IGMP |
|
bstop = uip_polligmp(dev, callback); |
|
if (!bstop) |
|
#endif |
|
{ |
|
/* 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 */
|
|
|