[164] | 1 | /**
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| 2 | * @file
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| 3 | * Sequential API Main thread module
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| 4 | *
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| 5 | */
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| 6 |
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| 7 | /*
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| 8 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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| 9 | * All rights reserved.
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| 10 | *
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| 11 | * Redistribution and use in source and binary forms, with or without modification,
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| 12 | * are permitted provided that the following conditions are met:
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| 13 | *
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| 14 | * 1. Redistributions of source code must retain the above copyright notice,
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| 15 | * this list of conditions and the following disclaimer.
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| 16 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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| 17 | * this list of conditions and the following disclaimer in the documentation
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| 18 | * and/or other materials provided with the distribution.
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| 19 | * 3. The name of the author may not be used to endorse or promote products
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| 20 | * derived from this software without specific prior written permission.
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| 21 | *
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| 22 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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| 23 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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| 24 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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| 25 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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| 26 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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| 27 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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| 28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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| 29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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| 30 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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| 31 | * OF SUCH DAMAGE.
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| 32 | *
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| 33 | * This file is part of the lwIP TCP/IP stack.
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| 34 | *
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| 35 | * Author: Adam Dunkels <adam@sics.se>
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| 36 | *
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| 37 | */
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| 38 |
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| 39 | #include "lwip/opt.h"
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| 40 |
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| 41 | #if !NO_SYS /* don't build if not configured for use in lwipopts.h */
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| 42 |
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| 43 | #include "lwip/sys.h"
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| 44 | #include "lwip/memp.h"
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| 45 | #include "lwip/mem.h"
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| 46 | #include "lwip/pbuf.h"
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| 47 | #include "lwip/tcpip.h"
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| 48 | #include "lwip/init.h"
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| 49 | #include "netif/etharp.h"
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| 50 | #include "netif/ppp_oe.h"
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| 51 |
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| 52 | /* global variables */
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| 53 | static tcpip_init_done_fn tcpip_init_done;
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| 54 | static void *tcpip_init_done_arg;
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| 55 | static sys_mbox_t mbox;
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| 56 |
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| 57 | #if LWIP_TCPIP_CORE_LOCKING
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| 58 | /** The global semaphore to lock the stack. */
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| 59 | sys_mutex_t lock_tcpip_core;
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| 60 | #endif /* LWIP_TCPIP_CORE_LOCKING */
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| 61 |
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| 62 |
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| 63 | /**
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| 64 | * The main lwIP thread. This thread has exclusive access to lwIP core functions
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| 65 | * (unless access to them is not locked). Other threads communicate with this
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| 66 | * thread using message boxes.
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| 67 | *
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| 68 | * It also starts all the timers to make sure they are running in the right
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| 69 | * thread context.
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| 70 | *
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| 71 | * @param arg unused argument
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| 72 | */
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| 73 | static void
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| 74 | tcpip_thread(void *arg)
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| 75 | {
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| 76 | struct tcpip_msg *msg;
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| 77 | LWIP_UNUSED_ARG(arg);
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| 78 |
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| 79 | if (tcpip_init_done != NULL) {
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| 80 | tcpip_init_done(tcpip_init_done_arg);
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| 81 | }
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| 82 |
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| 83 | LOCK_TCPIP_CORE();
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| 84 | while (1) { /* MAIN Loop */
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| 85 | UNLOCK_TCPIP_CORE();
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| 86 | LWIP_TCPIP_THREAD_ALIVE();
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| 87 | /* wait for a message, timeouts are processed while waiting */
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| 88 | sys_timeouts_mbox_fetch(&mbox, (void **)&msg);
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| 89 | LOCK_TCPIP_CORE();
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| 90 | switch (msg->type) {
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| 91 | #if LWIP_NETCONN
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| 92 | case TCPIP_MSG_API:
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| 93 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: API message %p\n", (void *)msg));
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| 94 | msg->msg.apimsg->function(&(msg->msg.apimsg->msg));
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| 95 | break;
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| 96 | #endif /* LWIP_NETCONN */
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| 97 |
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| 98 | #if !LWIP_TCPIP_CORE_LOCKING_INPUT
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| 99 | case TCPIP_MSG_INPKT:
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| 100 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: PACKET %p\n", (void *)msg));
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| 101 | #if LWIP_ETHERNET
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| 102 | if (msg->msg.inp.netif->flags & (NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET)) {
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| 103 | ethernet_input(msg->msg.inp.p, msg->msg.inp.netif);
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| 104 | } else
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| 105 | #endif /* LWIP_ETHERNET */
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| 106 | {
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| 107 | ip_input(msg->msg.inp.p, msg->msg.inp.netif);
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| 108 | }
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| 109 | memp_free(MEMP_TCPIP_MSG_INPKT, msg);
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| 110 | break;
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| 111 | #endif /* LWIP_TCPIP_CORE_LOCKING_INPUT */
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| 112 |
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| 113 | #if LWIP_NETIF_API
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| 114 | case TCPIP_MSG_NETIFAPI:
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| 115 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: Netif API message %p\n", (void *)msg));
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| 116 | msg->msg.netifapimsg->function(&(msg->msg.netifapimsg->msg));
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| 117 | break;
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| 118 | #endif /* LWIP_NETIF_API */
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| 119 |
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| 120 | #if LWIP_TCPIP_TIMEOUT
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| 121 | case TCPIP_MSG_TIMEOUT:
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| 122 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: TIMEOUT %p\n", (void *)msg));
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| 123 | sys_timeout(msg->msg.tmo.msecs, msg->msg.tmo.h, msg->msg.tmo.arg);
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| 124 | memp_free(MEMP_TCPIP_MSG_API, msg);
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| 125 | break;
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| 126 | case TCPIP_MSG_UNTIMEOUT:
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| 127 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: UNTIMEOUT %p\n", (void *)msg));
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| 128 | sys_untimeout(msg->msg.tmo.h, msg->msg.tmo.arg);
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| 129 | memp_free(MEMP_TCPIP_MSG_API, msg);
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| 130 | break;
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| 131 | #endif /* LWIP_TCPIP_TIMEOUT */
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| 132 |
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| 133 | case TCPIP_MSG_CALLBACK:
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| 134 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: CALLBACK %p\n", (void *)msg));
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| 135 | msg->msg.cb.function(msg->msg.cb.ctx);
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| 136 | memp_free(MEMP_TCPIP_MSG_API, msg);
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| 137 | break;
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| 138 |
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| 139 | case TCPIP_MSG_CALLBACK_STATIC:
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| 140 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: CALLBACK_STATIC %p\n", (void *)msg));
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| 141 | msg->msg.cb.function(msg->msg.cb.ctx);
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| 142 | break;
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| 143 |
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| 144 | default:
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| 145 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: invalid message: %d\n", msg->type));
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| 146 | LWIP_ASSERT("tcpip_thread: invalid message", 0);
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| 147 | break;
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| 148 | }
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| 149 | }
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| 150 | }
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| 151 |
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| 152 | /**
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| 153 | * Pass a received packet to tcpip_thread for input processing
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| 154 | *
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| 155 | * @param p the received packet, p->payload pointing to the Ethernet header or
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| 156 | * to an IP header (if inp doesn't have NETIF_FLAG_ETHARP or
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| 157 | * NETIF_FLAG_ETHERNET flags)
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| 158 | * @param inp the network interface on which the packet was received
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| 159 | */
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| 160 | err_t
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| 161 | tcpip_input(struct pbuf *p, struct netif *inp)
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| 162 | {
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| 163 | #if LWIP_TCPIP_CORE_LOCKING_INPUT
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| 164 | err_t ret;
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| 165 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_input: PACKET %p/%p\n", (void *)p, (void *)inp));
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| 166 | LOCK_TCPIP_CORE();
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| 167 | #if LWIP_ETHERNET
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| 168 | if (inp->flags & (NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET)) {
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| 169 | ret = ethernet_input(p, inp);
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| 170 | } else
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| 171 | #endif /* LWIP_ETHERNET */
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| 172 | {
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| 173 | ret = ip_input(p, inp);
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| 174 | }
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| 175 | UNLOCK_TCPIP_CORE();
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| 176 | return ret;
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| 177 | #else /* LWIP_TCPIP_CORE_LOCKING_INPUT */
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| 178 | struct tcpip_msg *msg;
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| 179 |
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| 180 | if (!sys_mbox_valid(&mbox)) {
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| 181 | return ERR_VAL;
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| 182 | }
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| 183 | msg = (struct tcpip_msg *)memp_malloc(MEMP_TCPIP_MSG_INPKT);
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| 184 | if (msg == NULL) {
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| 185 | return ERR_MEM;
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| 186 | }
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| 187 |
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| 188 | msg->type = TCPIP_MSG_INPKT;
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| 189 | msg->msg.inp.p = p;
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| 190 | msg->msg.inp.netif = inp;
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| 191 | if (sys_mbox_trypost(&mbox, msg) != ERR_OK) {
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| 192 | memp_free(MEMP_TCPIP_MSG_INPKT, msg);
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| 193 | return ERR_MEM;
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| 194 | }
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| 195 | return ERR_OK;
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| 196 | #endif /* LWIP_TCPIP_CORE_LOCKING_INPUT */
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| 197 | }
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| 198 |
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| 199 | /**
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| 200 | * Call a specific function in the thread context of
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| 201 | * tcpip_thread for easy access synchronization.
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| 202 | * A function called in that way may access lwIP core code
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| 203 | * without fearing concurrent access.
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| 204 | *
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| 205 | * @param f the function to call
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| 206 | * @param ctx parameter passed to f
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| 207 | * @param block 1 to block until the request is posted, 0 to non-blocking mode
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| 208 | * @return ERR_OK if the function was called, another err_t if not
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| 209 | */
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| 210 | err_t
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| 211 | tcpip_callback_with_block(tcpip_callback_fn function, void *ctx, u8_t block)
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| 212 | {
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| 213 | struct tcpip_msg *msg;
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| 214 |
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| 215 | if (sys_mbox_valid(&mbox)) {
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| 216 | msg = (struct tcpip_msg *)memp_malloc(MEMP_TCPIP_MSG_API);
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| 217 | if (msg == NULL) {
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| 218 | return ERR_MEM;
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| 219 | }
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| 220 |
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| 221 | msg->type = TCPIP_MSG_CALLBACK;
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| 222 | msg->msg.cb.function = function;
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| 223 | msg->msg.cb.ctx = ctx;
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| 224 | if (block) {
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| 225 | sys_mbox_post(&mbox, msg);
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| 226 | } else {
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| 227 | if (sys_mbox_trypost(&mbox, msg) != ERR_OK) {
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| 228 | memp_free(MEMP_TCPIP_MSG_API, msg);
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| 229 | return ERR_MEM;
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| 230 | }
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| 231 | }
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| 232 | return ERR_OK;
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| 233 | }
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| 234 | return ERR_VAL;
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| 235 | }
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| 236 |
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| 237 | #if LWIP_TCPIP_TIMEOUT
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| 238 | /**
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| 239 | * call sys_timeout in tcpip_thread
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| 240 | *
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| 241 | * @param msec time in milliseconds for timeout
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| 242 | * @param h function to be called on timeout
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| 243 | * @param arg argument to pass to timeout function h
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| 244 | * @return ERR_MEM on memory error, ERR_OK otherwise
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| 245 | */
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| 246 | err_t
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| 247 | tcpip_timeout(u32_t msecs, sys_timeout_handler h, void *arg)
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| 248 | {
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| 249 | struct tcpip_msg *msg;
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| 250 |
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| 251 | if (sys_mbox_valid(&mbox)) {
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| 252 | msg = (struct tcpip_msg *)memp_malloc(MEMP_TCPIP_MSG_API);
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| 253 | if (msg == NULL) {
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| 254 | return ERR_MEM;
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| 255 | }
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| 256 |
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| 257 | msg->type = TCPIP_MSG_TIMEOUT;
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| 258 | msg->msg.tmo.msecs = msecs;
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| 259 | msg->msg.tmo.h = h;
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| 260 | msg->msg.tmo.arg = arg;
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| 261 | sys_mbox_post(&mbox, msg);
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| 262 | return ERR_OK;
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| 263 | }
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| 264 | return ERR_VAL;
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| 265 | }
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| 266 |
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| 267 | /**
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| 268 | * call sys_untimeout in tcpip_thread
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| 269 | *
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| 270 | * @param msec time in milliseconds for timeout
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| 271 | * @param h function to be called on timeout
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| 272 | * @param arg argument to pass to timeout function h
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| 273 | * @return ERR_MEM on memory error, ERR_OK otherwise
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| 274 | */
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| 275 | err_t
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| 276 | tcpip_untimeout(sys_timeout_handler h, void *arg)
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| 277 | {
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| 278 | struct tcpip_msg *msg;
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| 279 |
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| 280 | if (sys_mbox_valid(&mbox)) {
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| 281 | msg = (struct tcpip_msg *)memp_malloc(MEMP_TCPIP_MSG_API);
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| 282 | if (msg == NULL) {
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| 283 | return ERR_MEM;
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| 284 | }
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| 285 |
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| 286 | msg->type = TCPIP_MSG_UNTIMEOUT;
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| 287 | msg->msg.tmo.h = h;
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| 288 | msg->msg.tmo.arg = arg;
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| 289 | sys_mbox_post(&mbox, msg);
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| 290 | return ERR_OK;
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| 291 | }
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| 292 | return ERR_VAL;
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| 293 | }
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| 294 | #endif /* LWIP_TCPIP_TIMEOUT */
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| 295 |
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| 296 | #if LWIP_NETCONN
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| 297 | /**
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| 298 | * Call the lower part of a netconn_* function
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| 299 | * This function is then running in the thread context
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| 300 | * of tcpip_thread and has exclusive access to lwIP core code.
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| 301 | *
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| 302 | * @param apimsg a struct containing the function to call and its parameters
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| 303 | * @return ERR_OK if the function was called, another err_t if not
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| 304 | */
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| 305 | err_t
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| 306 | tcpip_apimsg(struct api_msg *apimsg)
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| 307 | {
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| 308 | struct tcpip_msg msg;
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| 309 | #ifdef LWIP_DEBUG
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| 310 | /* catch functions that don't set err */
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| 311 | apimsg->msg.err = ERR_VAL;
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| 312 | #endif
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| 313 |
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| 314 | if (sys_mbox_valid(&mbox)) {
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| 315 | msg.type = TCPIP_MSG_API;
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| 316 | msg.msg.apimsg = apimsg;
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| 317 | sys_mbox_post(&mbox, &msg);
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| 318 | sys_arch_sem_wait(&apimsg->msg.conn->op_completed, 0);
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| 319 | return apimsg->msg.err;
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| 320 | }
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| 321 | return ERR_VAL;
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| 322 | }
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| 323 |
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| 324 | #if LWIP_TCPIP_CORE_LOCKING
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| 325 | /**
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| 326 | * Call the lower part of a netconn_* function
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| 327 | * This function has exclusive access to lwIP core code by locking it
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| 328 | * before the function is called.
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| 329 | *
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| 330 | * @param apimsg a struct containing the function to call and its parameters
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| 331 | * @return ERR_OK (only for compatibility fo tcpip_apimsg())
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| 332 | */
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| 333 | err_t
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| 334 | tcpip_apimsg_lock(struct api_msg *apimsg)
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| 335 | {
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| 336 | #ifdef LWIP_DEBUG
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| 337 | /* catch functions that don't set err */
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| 338 | apimsg->msg.err = ERR_VAL;
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| 339 | #endif
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| 340 |
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| 341 | LOCK_TCPIP_CORE();
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| 342 | apimsg->function(&(apimsg->msg));
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| 343 | UNLOCK_TCPIP_CORE();
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| 344 | return apimsg->msg.err;
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| 345 |
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| 346 | }
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| 347 | #endif /* LWIP_TCPIP_CORE_LOCKING */
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| 348 | #endif /* LWIP_NETCONN */
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| 349 |
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| 350 | #if LWIP_NETIF_API
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| 351 | #if !LWIP_TCPIP_CORE_LOCKING
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| 352 | /**
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| 353 | * Much like tcpip_apimsg, but calls the lower part of a netifapi_*
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| 354 | * function.
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| 355 | *
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| 356 | * @param netifapimsg a struct containing the function to call and its parameters
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| 357 | * @return error code given back by the function that was called
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| 358 | */
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| 359 | err_t
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| 360 | tcpip_netifapi(struct netifapi_msg* netifapimsg)
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| 361 | {
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| 362 | struct tcpip_msg msg;
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| 363 |
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| 364 | if (sys_mbox_valid(&mbox)) {
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| 365 | err_t err = sys_sem_new(&netifapimsg->msg.sem, 0);
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| 366 | if (err != ERR_OK) {
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| 367 | netifapimsg->msg.err = err;
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| 368 | return err;
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| 369 | }
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| 370 |
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| 371 | msg.type = TCPIP_MSG_NETIFAPI;
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| 372 | msg.msg.netifapimsg = netifapimsg;
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| 373 | sys_mbox_post(&mbox, &msg);
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| 374 | sys_sem_wait(&netifapimsg->msg.sem);
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| 375 | sys_sem_free(&netifapimsg->msg.sem);
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| 376 | return netifapimsg->msg.err;
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| 377 | }
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| 378 | return ERR_VAL;
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| 379 | }
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| 380 | #else /* !LWIP_TCPIP_CORE_LOCKING */
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| 381 | /**
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| 382 | * Call the lower part of a netifapi_* function
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| 383 | * This function has exclusive access to lwIP core code by locking it
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| 384 | * before the function is called.
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| 385 | *
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| 386 | * @param netifapimsg a struct containing the function to call and its parameters
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| 387 | * @return ERR_OK (only for compatibility fo tcpip_netifapi())
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| 388 | */
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| 389 | err_t
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| 390 | tcpip_netifapi_lock(struct netifapi_msg* netifapimsg)
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| 391 | {
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| 392 | LOCK_TCPIP_CORE();
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| 393 | netifapimsg->function(&(netifapimsg->msg));
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| 394 | UNLOCK_TCPIP_CORE();
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| 395 | return netifapimsg->msg.err;
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| 396 | }
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| 397 | #endif /* !LWIP_TCPIP_CORE_LOCKING */
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| 398 | #endif /* LWIP_NETIF_API */
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| 399 |
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| 400 | /**
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| 401 | * Allocate a structure for a static callback message and initialize it.
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| 402 | * This is intended to be used to send "static" messages from interrupt context.
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| 403 | *
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| 404 | * @param function the function to call
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| 405 | * @param ctx parameter passed to function
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| 406 | * @return a struct pointer to pass to tcpip_trycallback().
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| 407 | */
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| 408 | struct tcpip_callback_msg* tcpip_callbackmsg_new(tcpip_callback_fn function, void *ctx)
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| 409 | {
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| 410 | struct tcpip_msg *msg = (struct tcpip_msg *)memp_malloc(MEMP_TCPIP_MSG_API);
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| 411 | if (msg == NULL) {
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| 412 | return NULL;
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| 413 | }
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| 414 | msg->type = TCPIP_MSG_CALLBACK_STATIC;
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| 415 | msg->msg.cb.function = function;
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| 416 | msg->msg.cb.ctx = ctx;
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| 417 | return (struct tcpip_callback_msg*)msg;
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| 418 | }
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| 419 |
|
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| 420 | /**
|
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| 421 | * Free a callback message allocated by tcpip_callbackmsg_new().
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| 422 | *
|
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| 423 | * @param msg the message to free
|
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| 424 | */
|
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| 425 | void tcpip_callbackmsg_delete(struct tcpip_callback_msg* msg)
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| 426 | {
|
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| 427 | memp_free(MEMP_TCPIP_MSG_API, msg);
|
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| 428 | }
|
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| 429 |
|
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| 430 | /**
|
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| 431 | * Try to post a callback-message to the tcpip_thread mbox
|
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| 432 | * This is intended to be used to send "static" messages from interrupt context.
|
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| 433 | *
|
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| 434 | * @param msg pointer to the message to post
|
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| 435 | * @return sys_mbox_trypost() return code
|
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| 436 | */
|
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| 437 | err_t
|
---|
| 438 | tcpip_trycallback(struct tcpip_callback_msg* msg)
|
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| 439 | {
|
---|
| 440 | if (!sys_mbox_valid(&mbox)) {
|
---|
| 441 | return ERR_VAL;
|
---|
| 442 | }
|
---|
| 443 | return sys_mbox_trypost(&mbox, msg);
|
---|
| 444 | }
|
---|
| 445 |
|
---|
| 446 | /**
|
---|
| 447 | * Initialize this module:
|
---|
| 448 | * - initialize all sub modules
|
---|
| 449 | * - start the tcpip_thread
|
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| 450 | *
|
---|
| 451 | * @param initfunc a function to call when tcpip_thread is running and finished initializing
|
---|
| 452 | * @param arg argument to pass to initfunc
|
---|
| 453 | */
|
---|
| 454 | void
|
---|
| 455 | tcpip_init(tcpip_init_done_fn initfunc, void *arg)
|
---|
| 456 | {
|
---|
| 457 | lwip_init();
|
---|
| 458 |
|
---|
| 459 | tcpip_init_done = initfunc;
|
---|
| 460 | tcpip_init_done_arg = arg;
|
---|
| 461 | if(sys_mbox_new(&mbox, TCPIP_MBOX_SIZE) != ERR_OK) {
|
---|
| 462 | LWIP_ASSERT("failed to create tcpip_thread mbox", 0);
|
---|
| 463 | }
|
---|
| 464 | #if LWIP_TCPIP_CORE_LOCKING
|
---|
| 465 | if(sys_mutex_new(&lock_tcpip_core) != ERR_OK) {
|
---|
| 466 | LWIP_ASSERT("failed to create lock_tcpip_core", 0);
|
---|
| 467 | }
|
---|
| 468 | #endif /* LWIP_TCPIP_CORE_LOCKING */
|
---|
| 469 |
|
---|
| 470 | sys_thread_new(TCPIP_THREAD_NAME, tcpip_thread, NULL, TCPIP_THREAD_STACKSIZE, TCPIP_THREAD_PRIO);
|
---|
| 471 | }
|
---|
| 472 |
|
---|
| 473 | /**
|
---|
| 474 | * Simple callback function used with tcpip_callback to free a pbuf
|
---|
| 475 | * (pbuf_free has a wrong signature for tcpip_callback)
|
---|
| 476 | *
|
---|
| 477 | * @param p The pbuf (chain) to be dereferenced.
|
---|
| 478 | */
|
---|
| 479 | static void
|
---|
| 480 | pbuf_free_int(void *p)
|
---|
| 481 | {
|
---|
| 482 | struct pbuf *q = (struct pbuf *)p;
|
---|
| 483 | pbuf_free(q);
|
---|
| 484 | }
|
---|
| 485 |
|
---|
| 486 | /**
|
---|
| 487 | * A simple wrapper function that allows you to free a pbuf from interrupt context.
|
---|
| 488 | *
|
---|
| 489 | * @param p The pbuf (chain) to be dereferenced.
|
---|
| 490 | * @return ERR_OK if callback could be enqueued, an err_t if not
|
---|
| 491 | */
|
---|
| 492 | err_t
|
---|
| 493 | pbuf_free_callback(struct pbuf *p)
|
---|
| 494 | {
|
---|
| 495 | return tcpip_callback_with_block(pbuf_free_int, p, 0);
|
---|
| 496 | }
|
---|
| 497 |
|
---|
| 498 | /**
|
---|
| 499 | * A simple wrapper function that allows you to free heap memory from
|
---|
| 500 | * interrupt context.
|
---|
| 501 | *
|
---|
| 502 | * @param m the heap memory to free
|
---|
| 503 | * @return ERR_OK if callback could be enqueued, an err_t if not
|
---|
| 504 | */
|
---|
| 505 | err_t
|
---|
| 506 | mem_free_callback(void *m)
|
---|
| 507 | {
|
---|
| 508 | return tcpip_callback_with_block(mem_free, m, 0);
|
---|
| 509 | }
|
---|
| 510 |
|
---|
| 511 | #endif /* !NO_SYS */
|
---|