470 lines
13 KiB
C
470 lines
13 KiB
C
/****************************************************************************
|
|
* net/devif/devif_poll.c
|
|
*
|
|
* Copyright (C) 2007-2010, 2012, 2014 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/netconfig.h>
|
|
#include <nuttx/net/netdev.h>
|
|
|
|
#include "devif/devif.h"
|
|
#include "arp/arp.h"
|
|
#include "tcp/tcp.h"
|
|
#include "udp/udp.h"
|
|
#include "pkt/pkt.h"
|
|
#include "icmp/icmp.h"
|
|
#include "igmp/igmp.h"
|
|
|
|
/****************************************************************************
|
|
* Private Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Function: devif_poll_pkt_connections
|
|
*
|
|
* Description:
|
|
* Poll all packet connections for available packets to send.
|
|
*
|
|
* Assumptions:
|
|
* This function is called from the MAC device driver and may be called from
|
|
* the timer interrupt/watchdog handle level.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_NET_PKT
|
|
static int devif_poll_pkt_connections(FAR struct net_driver_s *dev,
|
|
devif_poll_callback_t callback)
|
|
{
|
|
FAR struct pkt_conn_s *pkt_conn = NULL;
|
|
int bstop = 0;
|
|
|
|
/* Traverse all of the allocated packet connections and perform the poll action */
|
|
|
|
while (!bstop && (pkt_conn = pkt_nextconn(pkt_conn)))
|
|
{
|
|
/* Perform the packet TX poll */
|
|
|
|
pkt_poll(dev, pkt_conn);
|
|
|
|
/* Call back into the driver */
|
|
|
|
bstop = callback(dev);
|
|
}
|
|
|
|
return bstop;
|
|
}
|
|
#endif /* CONFIG_NET_PKT */
|
|
|
|
/****************************************************************************
|
|
* Function: devif_poll_icmp
|
|
*
|
|
* Description:
|
|
* Poll all UDP connections for available packets to send.
|
|
*
|
|
* Assumptions:
|
|
* This function is called from the MAC 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 devif_poll_icmp(FAR struct net_driver_s *dev,
|
|
devif_poll_callback_t callback)
|
|
{
|
|
/* Perform the UDP TX poll */
|
|
|
|
icmp_poll(dev);
|
|
|
|
/* Call back into the driver */
|
|
|
|
return callback(dev);
|
|
}
|
|
#endif /* CONFIG_NET_ICMP && CONFIG_NET_ICMP_PING */
|
|
|
|
/****************************************************************************
|
|
* Function: devif_poll_igmp
|
|
*
|
|
* Description:
|
|
* Poll all IGMP connections for available packets to send.
|
|
*
|
|
* Assumptions:
|
|
* This function is called from the MAC device driver and may be called from
|
|
* the timer interrupt/watchdog handle level.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_NET_IGMP
|
|
static inline int devif_poll_igmp(FAR struct net_driver_s *dev,
|
|
devif_poll_callback_t callback)
|
|
{
|
|
/* Perform the IGMP TX poll */
|
|
|
|
igmp_poll(dev);
|
|
|
|
/* Call back into the driver */
|
|
|
|
return callback(dev);
|
|
}
|
|
#endif /* CONFIG_NET_IGMP */
|
|
|
|
/****************************************************************************
|
|
* Function: devif_poll_udp_connections
|
|
*
|
|
* Description:
|
|
* Poll all UDP connections for available packets to send.
|
|
*
|
|
* Assumptions:
|
|
* This function is called from the MAC device driver and may be called
|
|
* from the timer interrupt/watchdog handle level.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_NET_UDP
|
|
static int devif_poll_udp_connections(FAR struct net_driver_s *dev,
|
|
devif_poll_callback_t callback)
|
|
{
|
|
FAR struct udp_conn_s *conn = NULL;
|
|
int bstop = 0;
|
|
|
|
/* Traverse all of the allocated UDP connections and perform the poll action */
|
|
|
|
while (!bstop && (conn = udp_nextconn(conn)))
|
|
{
|
|
/* Perform the UDP TX poll */
|
|
|
|
udp_poll(dev, conn);
|
|
|
|
/* Call back into the driver */
|
|
|
|
bstop = callback(dev);
|
|
}
|
|
|
|
return bstop;
|
|
}
|
|
#endif /* CONFIG_NET_UDP */
|
|
|
|
/****************************************************************************
|
|
* Function: devif_poll_tcp_connections
|
|
*
|
|
* Description:
|
|
* Poll all UDP connections for available packets to send.
|
|
*
|
|
* Assumptions:
|
|
* This function is called from the MAC device driver and may be called
|
|
* from the timer interrupt/watchdog handle level.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_NET_TCP
|
|
static inline int devif_poll_tcp_connections(FAR struct net_driver_s *dev,
|
|
devif_poll_callback_t callback)
|
|
{
|
|
FAR struct tcp_conn_s *conn = NULL;
|
|
int bstop = 0;
|
|
|
|
/* Traverse all of the active TCP connections and perform the poll action */
|
|
|
|
while (!bstop && (conn = tcp_nextconn(conn)))
|
|
{
|
|
/* Perform the TCP TX poll */
|
|
|
|
tcp_poll(dev, conn);
|
|
|
|
/* Call back into the driver */
|
|
|
|
bstop = callback(dev);
|
|
}
|
|
|
|
return bstop;
|
|
}
|
|
#else
|
|
# define devif_poll_tcp_connections(dev, callback) (0)
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Function: devif_poll_tcp_timer
|
|
*
|
|
* Description:
|
|
* The TCP timer has expired. Update TCP timing state in each active,
|
|
* TCP connection.
|
|
*
|
|
* Assumptions:
|
|
* This function is called from the MAC device driver and may be called from
|
|
* the timer interrupt/watchdog handle level.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_NET_TCP
|
|
static inline int devif_poll_tcp_timer(FAR struct net_driver_s *dev,
|
|
devif_poll_callback_t callback, int hsec)
|
|
{
|
|
FAR struct tcp_conn_s *conn = NULL;
|
|
int bstop = 0;
|
|
|
|
/* Traverse all of the active TCP connections and perform the poll action */
|
|
|
|
while (!bstop && (conn = tcp_nextconn(conn)))
|
|
{
|
|
/* Perform the TCP timer poll */
|
|
|
|
tcp_timer(dev, conn, hsec);
|
|
|
|
/* Call back into the driver */
|
|
|
|
bstop = callback(dev);
|
|
}
|
|
|
|
return bstop;
|
|
}
|
|
#else
|
|
# define devif_poll_tcp_timer(dev, callback, hsec) (0)
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Function: devif_poll
|
|
*
|
|
* Description:
|
|
* This function will traverse each active uIP connection structure and
|
|
* will perform TCP and UDP polling operations. devif_poll() may be called
|
|
* asynchronously with the network driver 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-supplied 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 MAC device driver and may be called
|
|
* from the timer interrupt/watchdog handle level.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int devif_poll(FAR struct net_driver_s *dev, devif_poll_callback_t callback)
|
|
{
|
|
int bstop;
|
|
|
|
/* Traverse all of the active packet connections and perform the poll
|
|
* action.
|
|
*/
|
|
|
|
#ifdef CONFIG_NET_ARP_SEND
|
|
/* Check for pending ARP requests */
|
|
|
|
bstop = arp_poll(dev, callback);
|
|
if (!bstop)
|
|
#endif
|
|
#ifdef CONFIG_NET_PKT
|
|
{
|
|
/* Check for pending packet socket transfer */
|
|
|
|
bstop = devif_poll_pkt_connections(dev, callback);
|
|
}
|
|
|
|
if (!bstop)
|
|
#endif
|
|
#ifdef CONFIG_NET_IGMP
|
|
{
|
|
/* Check for pending IGMP messages */
|
|
|
|
bstop = devif_poll_igmp(dev, callback);
|
|
}
|
|
|
|
if (!bstop)
|
|
#endif
|
|
#ifdef CONFIG_NET_TCP
|
|
{
|
|
/* Traverse all of the active TCP connections and perform the poll
|
|
* action.
|
|
*/
|
|
|
|
bstop = devif_poll_tcp_connections(dev, callback);
|
|
}
|
|
|
|
if (!bstop)
|
|
#endif
|
|
#ifdef CONFIG_NET_UDP
|
|
{
|
|
/* Traverse all of the allocated UDP connections and perform
|
|
* the poll action
|
|
*/
|
|
|
|
bstop = devif_poll_udp_connections(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 = devif_poll_icmp(dev, callback);
|
|
}
|
|
|
|
if (!bstop)
|
|
#endif
|
|
{
|
|
/* Nothing more to do */
|
|
}
|
|
|
|
return bstop;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Function: devif_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 devif_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-supplied 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 MAC device driver and may be called from
|
|
* the timer interrupt/watchdog handle level.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int devif_timer(FAR struct net_driver_s *dev, devif_poll_callback_t callback,
|
|
int hsec)
|
|
{
|
|
int bstop;
|
|
|
|
/* Increment the timer used by the IP reassembly logic */
|
|
|
|
#if defined(CONFIG_NET_TCP_REASSEMBLY) && !defined(CONFIG_NET_IPv6)
|
|
if (g_reassembly_timer != 0 &&
|
|
g_reassembly_timer < CONFIG_NET_TCP_REASS_MAXAGE)
|
|
{
|
|
g_reassembly_timer += hsec;
|
|
}
|
|
#endif
|
|
|
|
/* Traverse all of the active packet connections and perform the poll
|
|
* action.
|
|
*/
|
|
|
|
#ifdef CONFIG_NET_ARP_SEND
|
|
/* Check for pending ARP requests */
|
|
|
|
bstop = arp_poll(dev, callback);
|
|
if (!bstop)
|
|
#endif
|
|
#ifdef CONFIG_NET_PKT
|
|
{
|
|
/* Check for pending packet socket transfer */
|
|
|
|
bstop = devif_poll_pkt_connections(dev, callback);
|
|
}
|
|
|
|
if (!bstop)
|
|
#endif
|
|
#ifdef CONFIG_NET_IGMP
|
|
{
|
|
/* Check for pending IGMP messages */
|
|
|
|
bstop = devif_poll_igmp(dev, callback);
|
|
}
|
|
|
|
if (!bstop)
|
|
#endif
|
|
#ifdef CONFIG_NET_TCP
|
|
{
|
|
/* Traverse all of the active TCP connections and perform the
|
|
* timer action.
|
|
*/
|
|
|
|
bstop = devif_poll_tcp_timer(dev, callback, hsec);
|
|
}
|
|
|
|
if (!bstop)
|
|
#endif
|
|
#ifdef CONFIG_NET_UDP
|
|
{
|
|
/* Traverse all of the allocated UDP connections and perform
|
|
* the timer action.
|
|
*/
|
|
|
|
bstop = devif_poll_udp_connections(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 = devif_poll_icmp(dev, callback);
|
|
}
|
|
|
|
if (!bstop)
|
|
#endif
|
|
{
|
|
/* Nothing to do */
|
|
}
|
|
|
|
return bstop;
|
|
}
|
|
|
|
#endif /* CONFIG_NET */
|