孙 毅明 / Mbed 2 deprecated 123

创建mbed

Dependencies:   EthernetInterface SDFileSystem mbed-rtos mbed

EthernetInterface/lwip/api/api_msg.c@1:6465a3f5c58a, 2018-03-06 (annotated)

Committer:
sunyiming
Date:
Tue Mar 06 08:53:46 2018 +0000
Revision:
1:6465a3f5c58a
??OK

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sunyiming 1:6465a3f5c58a 1 /**
sunyiming 1:6465a3f5c58a 2 * @file
sunyiming 1:6465a3f5c58a 3 * Sequential API Internal module
sunyiming 1:6465a3f5c58a 4 *
sunyiming 1:6465a3f5c58a 5 */
sunyiming 1:6465a3f5c58a 6
sunyiming 1:6465a3f5c58a 7 /*
sunyiming 1:6465a3f5c58a 8 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
sunyiming 1:6465a3f5c58a 9 * All rights reserved.
sunyiming 1:6465a3f5c58a 10 *
sunyiming 1:6465a3f5c58a 11 * Redistribution and use in source and binary forms, with or without modification,
sunyiming 1:6465a3f5c58a 12 * are permitted provided that the following conditions are met:
sunyiming 1:6465a3f5c58a 13 *
sunyiming 1:6465a3f5c58a 14 * 1. Redistributions of source code must retain the above copyright notice,
sunyiming 1:6465a3f5c58a 15 * this list of conditions and the following disclaimer.
sunyiming 1:6465a3f5c58a 16 * 2. Redistributions in binary form must reproduce the above copyright notice,
sunyiming 1:6465a3f5c58a 17 * this list of conditions and the following disclaimer in the documentation
sunyiming 1:6465a3f5c58a 18 * and/or other materials provided with the distribution.
sunyiming 1:6465a3f5c58a 19 * 3. The name of the author may not be used to endorse or promote products
sunyiming 1:6465a3f5c58a 20 * derived from this software without specific prior written permission.
sunyiming 1:6465a3f5c58a 21 *
sunyiming 1:6465a3f5c58a 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
sunyiming 1:6465a3f5c58a 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
sunyiming 1:6465a3f5c58a 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
sunyiming 1:6465a3f5c58a 25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
sunyiming 1:6465a3f5c58a 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
sunyiming 1:6465a3f5c58a 27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
sunyiming 1:6465a3f5c58a 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
sunyiming 1:6465a3f5c58a 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
sunyiming 1:6465a3f5c58a 30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
sunyiming 1:6465a3f5c58a 31 * OF SUCH DAMAGE.
sunyiming 1:6465a3f5c58a 32 *
sunyiming 1:6465a3f5c58a 33 * This file is part of the lwIP TCP/IP stack.
sunyiming 1:6465a3f5c58a 34 *
sunyiming 1:6465a3f5c58a 35 * Author: Adam Dunkels <adam@sics.se>
sunyiming 1:6465a3f5c58a 36 *
sunyiming 1:6465a3f5c58a 37 */
sunyiming 1:6465a3f5c58a 38
sunyiming 1:6465a3f5c58a 39 #include "lwip/opt.h"
sunyiming 1:6465a3f5c58a 40
sunyiming 1:6465a3f5c58a 41 #if LWIP_NETCONN /* don't build if not configured for use in lwipopts.h */
sunyiming 1:6465a3f5c58a 42
sunyiming 1:6465a3f5c58a 43 #include "lwip/api_msg.h"
sunyiming 1:6465a3f5c58a 44
sunyiming 1:6465a3f5c58a 45 #include "lwip/ip.h"
sunyiming 1:6465a3f5c58a 46 #include "lwip/udp.h"
sunyiming 1:6465a3f5c58a 47 #include "lwip/tcp.h"
sunyiming 1:6465a3f5c58a 48 #include "lwip/raw.h"
sunyiming 1:6465a3f5c58a 49
sunyiming 1:6465a3f5c58a 50 #include "lwip/memp.h"
sunyiming 1:6465a3f5c58a 51 #include "lwip/tcpip.h"
sunyiming 1:6465a3f5c58a 52 #include "lwip/igmp.h"
sunyiming 1:6465a3f5c58a 53 #include "lwip/dns.h"
sunyiming 1:6465a3f5c58a 54
sunyiming 1:6465a3f5c58a 55 #include <string.h>
sunyiming 1:6465a3f5c58a 56
sunyiming 1:6465a3f5c58a 57 #define SET_NONBLOCKING_CONNECT(conn, val) do { if(val) { \
sunyiming 1:6465a3f5c58a 58 (conn)->flags |= NETCONN_FLAG_IN_NONBLOCKING_CONNECT; \
sunyiming 1:6465a3f5c58a 59 } else { \
sunyiming 1:6465a3f5c58a 60 (conn)->flags &= ~ NETCONN_FLAG_IN_NONBLOCKING_CONNECT; }} while(0)
sunyiming 1:6465a3f5c58a 61 #define IN_NONBLOCKING_CONNECT(conn) (((conn)->flags & NETCONN_FLAG_IN_NONBLOCKING_CONNECT) != 0)
sunyiming 1:6465a3f5c58a 62
sunyiming 1:6465a3f5c58a 63 /* forward declarations */
sunyiming 1:6465a3f5c58a 64 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 65 static err_t do_writemore(struct netconn *conn);
sunyiming 1:6465a3f5c58a 66 static void do_close_internal(struct netconn *conn);
sunyiming 1:6465a3f5c58a 67 #endif
sunyiming 1:6465a3f5c58a 68
sunyiming 1:6465a3f5c58a 69 #if LWIP_RAW
sunyiming 1:6465a3f5c58a 70 /**
sunyiming 1:6465a3f5c58a 71 * Receive callback function for RAW netconns.
sunyiming 1:6465a3f5c58a 72 * Doesn't 'eat' the packet, only references it and sends it to
sunyiming 1:6465a3f5c58a 73 * conn->recvmbox
sunyiming 1:6465a3f5c58a 74 *
sunyiming 1:6465a3f5c58a 75 * @see raw.h (struct raw_pcb.recv) for parameters and return value
sunyiming 1:6465a3f5c58a 76 */
sunyiming 1:6465a3f5c58a 77 static u8_t
sunyiming 1:6465a3f5c58a 78 recv_raw(void *arg, struct raw_pcb *pcb, struct pbuf *p,
sunyiming 1:6465a3f5c58a 79 ip_addr_t *addr)
sunyiming 1:6465a3f5c58a 80 {
sunyiming 1:6465a3f5c58a 81 struct pbuf *q;
sunyiming 1:6465a3f5c58a 82 struct netbuf *buf;
sunyiming 1:6465a3f5c58a 83 struct netconn *conn;
sunyiming 1:6465a3f5c58a 84
sunyiming 1:6465a3f5c58a 85 LWIP_UNUSED_ARG(addr);
sunyiming 1:6465a3f5c58a 86 conn = (struct netconn *)arg;
sunyiming 1:6465a3f5c58a 87
sunyiming 1:6465a3f5c58a 88 if ((conn != NULL) && sys_mbox_valid(&conn->recvmbox)) {
sunyiming 1:6465a3f5c58a 89 #if LWIP_SO_RCVBUF
sunyiming 1:6465a3f5c58a 90 int recv_avail;
sunyiming 1:6465a3f5c58a 91 SYS_ARCH_GET(conn->recv_avail, recv_avail);
sunyiming 1:6465a3f5c58a 92 if ((recv_avail + (int)(p->tot_len)) > conn->recv_bufsize) {
sunyiming 1:6465a3f5c58a 93 return 0;
sunyiming 1:6465a3f5c58a 94 }
sunyiming 1:6465a3f5c58a 95 #endif /* LWIP_SO_RCVBUF */
sunyiming 1:6465a3f5c58a 96 /* copy the whole packet into new pbufs */
sunyiming 1:6465a3f5c58a 97 q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
sunyiming 1:6465a3f5c58a 98 if(q != NULL) {
sunyiming 1:6465a3f5c58a 99 if (pbuf_copy(q, p) != ERR_OK) {
sunyiming 1:6465a3f5c58a 100 pbuf_free(q);
sunyiming 1:6465a3f5c58a 101 q = NULL;
sunyiming 1:6465a3f5c58a 102 }
sunyiming 1:6465a3f5c58a 103 }
sunyiming 1:6465a3f5c58a 104
sunyiming 1:6465a3f5c58a 105 if (q != NULL) {
sunyiming 1:6465a3f5c58a 106 u16_t len;
sunyiming 1:6465a3f5c58a 107 buf = (struct netbuf *)memp_malloc(MEMP_NETBUF);
sunyiming 1:6465a3f5c58a 108 if (buf == NULL) {
sunyiming 1:6465a3f5c58a 109 pbuf_free(q);
sunyiming 1:6465a3f5c58a 110 return 0;
sunyiming 1:6465a3f5c58a 111 }
sunyiming 1:6465a3f5c58a 112
sunyiming 1:6465a3f5c58a 113 buf->p = q;
sunyiming 1:6465a3f5c58a 114 buf->ptr = q;
sunyiming 1:6465a3f5c58a 115 ip_addr_copy(buf->addr, *ip_current_src_addr());
sunyiming 1:6465a3f5c58a 116 buf->port = pcb->protocol;
sunyiming 1:6465a3f5c58a 117
sunyiming 1:6465a3f5c58a 118 len = q->tot_len;
sunyiming 1:6465a3f5c58a 119 if (sys_mbox_trypost(&conn->recvmbox, buf) != ERR_OK) {
sunyiming 1:6465a3f5c58a 120 netbuf_delete(buf);
sunyiming 1:6465a3f5c58a 121 return 0;
sunyiming 1:6465a3f5c58a 122 } else {
sunyiming 1:6465a3f5c58a 123 #if LWIP_SO_RCVBUF
sunyiming 1:6465a3f5c58a 124 SYS_ARCH_INC(conn->recv_avail, len);
sunyiming 1:6465a3f5c58a 125 #endif /* LWIP_SO_RCVBUF */
sunyiming 1:6465a3f5c58a 126 /* Register event with callback */
sunyiming 1:6465a3f5c58a 127 API_EVENT(conn, NETCONN_EVT_RCVPLUS, len);
sunyiming 1:6465a3f5c58a 128 }
sunyiming 1:6465a3f5c58a 129 }
sunyiming 1:6465a3f5c58a 130 }
sunyiming 1:6465a3f5c58a 131
sunyiming 1:6465a3f5c58a 132 return 0; /* do not eat the packet */
sunyiming 1:6465a3f5c58a 133 }
sunyiming 1:6465a3f5c58a 134 #endif /* LWIP_RAW*/
sunyiming 1:6465a3f5c58a 135
sunyiming 1:6465a3f5c58a 136 #if LWIP_UDP
sunyiming 1:6465a3f5c58a 137 /**
sunyiming 1:6465a3f5c58a 138 * Receive callback function for UDP netconns.
sunyiming 1:6465a3f5c58a 139 * Posts the packet to conn->recvmbox or deletes it on memory error.
sunyiming 1:6465a3f5c58a 140 *
sunyiming 1:6465a3f5c58a 141 * @see udp.h (struct udp_pcb.recv) for parameters
sunyiming 1:6465a3f5c58a 142 */
sunyiming 1:6465a3f5c58a 143 static void
sunyiming 1:6465a3f5c58a 144 recv_udp(void *arg, struct udp_pcb *pcb, struct pbuf *p,
sunyiming 1:6465a3f5c58a 145 ip_addr_t *addr, u16_t port)
sunyiming 1:6465a3f5c58a 146 {
sunyiming 1:6465a3f5c58a 147 struct netbuf *buf;
sunyiming 1:6465a3f5c58a 148 struct netconn *conn;
sunyiming 1:6465a3f5c58a 149 u16_t len;
sunyiming 1:6465a3f5c58a 150 #if LWIP_SO_RCVBUF
sunyiming 1:6465a3f5c58a 151 int recv_avail;
sunyiming 1:6465a3f5c58a 152 #endif /* LWIP_SO_RCVBUF */
sunyiming 1:6465a3f5c58a 153
sunyiming 1:6465a3f5c58a 154 LWIP_UNUSED_ARG(pcb); /* only used for asserts... */
sunyiming 1:6465a3f5c58a 155 LWIP_ASSERT("recv_udp must have a pcb argument", pcb != NULL);
sunyiming 1:6465a3f5c58a 156 LWIP_ASSERT("recv_udp must have an argument", arg != NULL);
sunyiming 1:6465a3f5c58a 157 conn = (struct netconn *)arg;
sunyiming 1:6465a3f5c58a 158 LWIP_ASSERT("recv_udp: recv for wrong pcb!", conn->pcb.udp == pcb);
sunyiming 1:6465a3f5c58a 159
sunyiming 1:6465a3f5c58a 160 #if LWIP_SO_RCVBUF
sunyiming 1:6465a3f5c58a 161 SYS_ARCH_GET(conn->recv_avail, recv_avail);
sunyiming 1:6465a3f5c58a 162 if ((conn == NULL) || !sys_mbox_valid(&conn->recvmbox) ||
sunyiming 1:6465a3f5c58a 163 ((recv_avail + (int)(p->tot_len)) > conn->recv_bufsize)) {
sunyiming 1:6465a3f5c58a 164 #else /* LWIP_SO_RCVBUF */
sunyiming 1:6465a3f5c58a 165 if ((conn == NULL) || !sys_mbox_valid(&conn->recvmbox)) {
sunyiming 1:6465a3f5c58a 166 #endif /* LWIP_SO_RCVBUF */
sunyiming 1:6465a3f5c58a 167 pbuf_free(p);
sunyiming 1:6465a3f5c58a 168 return;
sunyiming 1:6465a3f5c58a 169 }
sunyiming 1:6465a3f5c58a 170
sunyiming 1:6465a3f5c58a 171 buf = (struct netbuf *)memp_malloc(MEMP_NETBUF);
sunyiming 1:6465a3f5c58a 172 if (buf == NULL) {
sunyiming 1:6465a3f5c58a 173 pbuf_free(p);
sunyiming 1:6465a3f5c58a 174 return;
sunyiming 1:6465a3f5c58a 175 } else {
sunyiming 1:6465a3f5c58a 176 buf->p = p;
sunyiming 1:6465a3f5c58a 177 buf->ptr = p;
sunyiming 1:6465a3f5c58a 178 ip_addr_set(&buf->addr, addr);
sunyiming 1:6465a3f5c58a 179 buf->port = port;
sunyiming 1:6465a3f5c58a 180 #if LWIP_NETBUF_RECVINFO
sunyiming 1:6465a3f5c58a 181 {
sunyiming 1:6465a3f5c58a 182 const struct ip_hdr* iphdr = ip_current_header();
sunyiming 1:6465a3f5c58a 183 /* get the UDP header - always in the first pbuf, ensured by udp_input */
sunyiming 1:6465a3f5c58a 184 const struct udp_hdr* udphdr = (void*)(((char*)iphdr) + IPH_LEN(iphdr));
sunyiming 1:6465a3f5c58a 185 #if LWIP_CHECKSUM_ON_COPY
sunyiming 1:6465a3f5c58a 186 buf->flags = NETBUF_FLAG_DESTADDR;
sunyiming 1:6465a3f5c58a 187 #endif /* LWIP_CHECKSUM_ON_COPY */
sunyiming 1:6465a3f5c58a 188 ip_addr_set(&buf->toaddr, ip_current_dest_addr());
sunyiming 1:6465a3f5c58a 189 buf->toport_chksum = udphdr->dest;
sunyiming 1:6465a3f5c58a 190 }
sunyiming 1:6465a3f5c58a 191 #endif /* LWIP_NETBUF_RECVINFO */
sunyiming 1:6465a3f5c58a 192 }
sunyiming 1:6465a3f5c58a 193
sunyiming 1:6465a3f5c58a 194 len = p->tot_len;
sunyiming 1:6465a3f5c58a 195 if (sys_mbox_trypost(&conn->recvmbox, buf) != ERR_OK) {
sunyiming 1:6465a3f5c58a 196 netbuf_delete(buf);
sunyiming 1:6465a3f5c58a 197 return;
sunyiming 1:6465a3f5c58a 198 } else {
sunyiming 1:6465a3f5c58a 199 #if LWIP_SO_RCVBUF
sunyiming 1:6465a3f5c58a 200 SYS_ARCH_INC(conn->recv_avail, len);
sunyiming 1:6465a3f5c58a 201 #endif /* LWIP_SO_RCVBUF */
sunyiming 1:6465a3f5c58a 202 /* Register event with callback */
sunyiming 1:6465a3f5c58a 203 API_EVENT(conn, NETCONN_EVT_RCVPLUS, len);
sunyiming 1:6465a3f5c58a 204 }
sunyiming 1:6465a3f5c58a 205 }
sunyiming 1:6465a3f5c58a 206 #endif /* LWIP_UDP */
sunyiming 1:6465a3f5c58a 207
sunyiming 1:6465a3f5c58a 208 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 209 /**
sunyiming 1:6465a3f5c58a 210 * Receive callback function for TCP netconns.
sunyiming 1:6465a3f5c58a 211 * Posts the packet to conn->recvmbox, but doesn't delete it on errors.
sunyiming 1:6465a3f5c58a 212 *
sunyiming 1:6465a3f5c58a 213 * @see tcp.h (struct tcp_pcb.recv) for parameters and return value
sunyiming 1:6465a3f5c58a 214 */
sunyiming 1:6465a3f5c58a 215 static err_t
sunyiming 1:6465a3f5c58a 216 recv_tcp(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err)
sunyiming 1:6465a3f5c58a 217 {
sunyiming 1:6465a3f5c58a 218 struct netconn *conn;
sunyiming 1:6465a3f5c58a 219 u16_t len;
sunyiming 1:6465a3f5c58a 220
sunyiming 1:6465a3f5c58a 221 LWIP_UNUSED_ARG(pcb);
sunyiming 1:6465a3f5c58a 222 LWIP_ASSERT("recv_tcp must have a pcb argument", pcb != NULL);
sunyiming 1:6465a3f5c58a 223 LWIP_ASSERT("recv_tcp must have an argument", arg != NULL);
sunyiming 1:6465a3f5c58a 224 conn = (struct netconn *)arg;
sunyiming 1:6465a3f5c58a 225 LWIP_ASSERT("recv_tcp: recv for wrong pcb!", conn->pcb.tcp == pcb);
sunyiming 1:6465a3f5c58a 226
sunyiming 1:6465a3f5c58a 227 if (conn == NULL) {
sunyiming 1:6465a3f5c58a 228 return ERR_VAL;
sunyiming 1:6465a3f5c58a 229 }
sunyiming 1:6465a3f5c58a 230 if (!sys_mbox_valid(&conn->recvmbox)) {
sunyiming 1:6465a3f5c58a 231 /* recvmbox already deleted */
sunyiming 1:6465a3f5c58a 232 if (p != NULL) {
sunyiming 1:6465a3f5c58a 233 tcp_recved(pcb, p->tot_len);
sunyiming 1:6465a3f5c58a 234 pbuf_free(p);
sunyiming 1:6465a3f5c58a 235 }
sunyiming 1:6465a3f5c58a 236 return ERR_OK;
sunyiming 1:6465a3f5c58a 237 }
sunyiming 1:6465a3f5c58a 238 /* Unlike for UDP or RAW pcbs, don't check for available space
sunyiming 1:6465a3f5c58a 239 using recv_avail since that could break the connection
sunyiming 1:6465a3f5c58a 240 (data is already ACKed) */
sunyiming 1:6465a3f5c58a 241
sunyiming 1:6465a3f5c58a 242 /* don't overwrite fatal errors! */
sunyiming 1:6465a3f5c58a 243 NETCONN_SET_SAFE_ERR(conn, err);
sunyiming 1:6465a3f5c58a 244
sunyiming 1:6465a3f5c58a 245 if (p != NULL) {
sunyiming 1:6465a3f5c58a 246 len = p->tot_len;
sunyiming 1:6465a3f5c58a 247 } else {
sunyiming 1:6465a3f5c58a 248 len = 0;
sunyiming 1:6465a3f5c58a 249 }
sunyiming 1:6465a3f5c58a 250
sunyiming 1:6465a3f5c58a 251 if (sys_mbox_trypost(&conn->recvmbox, p) != ERR_OK) {
sunyiming 1:6465a3f5c58a 252 /* don't deallocate p: it is presented to us later again from tcp_fasttmr! */
sunyiming 1:6465a3f5c58a 253 return ERR_MEM;
sunyiming 1:6465a3f5c58a 254 } else {
sunyiming 1:6465a3f5c58a 255 #if LWIP_SO_RCVBUF
sunyiming 1:6465a3f5c58a 256 SYS_ARCH_INC(conn->recv_avail, len);
sunyiming 1:6465a3f5c58a 257 #endif /* LWIP_SO_RCVBUF */
sunyiming 1:6465a3f5c58a 258 /* Register event with callback */
sunyiming 1:6465a3f5c58a 259 API_EVENT(conn, NETCONN_EVT_RCVPLUS, len);
sunyiming 1:6465a3f5c58a 260 }
sunyiming 1:6465a3f5c58a 261
sunyiming 1:6465a3f5c58a 262 return ERR_OK;
sunyiming 1:6465a3f5c58a 263 }
sunyiming 1:6465a3f5c58a 264
sunyiming 1:6465a3f5c58a 265 /**
sunyiming 1:6465a3f5c58a 266 * Poll callback function for TCP netconns.
sunyiming 1:6465a3f5c58a 267 * Wakes up an application thread that waits for a connection to close
sunyiming 1:6465a3f5c58a 268 * or data to be sent. The application thread then takes the
sunyiming 1:6465a3f5c58a 269 * appropriate action to go on.
sunyiming 1:6465a3f5c58a 270 *
sunyiming 1:6465a3f5c58a 271 * Signals the conn->sem.
sunyiming 1:6465a3f5c58a 272 * netconn_close waits for conn->sem if closing failed.
sunyiming 1:6465a3f5c58a 273 *
sunyiming 1:6465a3f5c58a 274 * @see tcp.h (struct tcp_pcb.poll) for parameters and return value
sunyiming 1:6465a3f5c58a 275 */
sunyiming 1:6465a3f5c58a 276 static err_t
sunyiming 1:6465a3f5c58a 277 poll_tcp(void *arg, struct tcp_pcb *pcb)
sunyiming 1:6465a3f5c58a 278 {
sunyiming 1:6465a3f5c58a 279 struct netconn *conn = (struct netconn *)arg;
sunyiming 1:6465a3f5c58a 280
sunyiming 1:6465a3f5c58a 281 LWIP_UNUSED_ARG(pcb);
sunyiming 1:6465a3f5c58a 282 LWIP_ASSERT("conn != NULL", (conn != NULL));
sunyiming 1:6465a3f5c58a 283
sunyiming 1:6465a3f5c58a 284 if (conn->state == NETCONN_WRITE) {
sunyiming 1:6465a3f5c58a 285 do_writemore(conn);
sunyiming 1:6465a3f5c58a 286 } else if (conn->state == NETCONN_CLOSE) {
sunyiming 1:6465a3f5c58a 287 do_close_internal(conn);
sunyiming 1:6465a3f5c58a 288 }
sunyiming 1:6465a3f5c58a 289 /* @todo: implement connect timeout here? */
sunyiming 1:6465a3f5c58a 290
sunyiming 1:6465a3f5c58a 291 /* Did a nonblocking write fail before? Then check available write-space. */
sunyiming 1:6465a3f5c58a 292 if (conn->flags & NETCONN_FLAG_CHECK_WRITESPACE) {
sunyiming 1:6465a3f5c58a 293 /* If the queued byte- or pbuf-count drops below the configured low-water limit,
sunyiming 1:6465a3f5c58a 294 let select mark this pcb as writable again. */
sunyiming 1:6465a3f5c58a 295 if ((conn->pcb.tcp != NULL) && (tcp_sndbuf(conn->pcb.tcp) > TCP_SNDLOWAT) &&
sunyiming 1:6465a3f5c58a 296 (tcp_sndqueuelen(conn->pcb.tcp) < TCP_SNDQUEUELOWAT)) {
sunyiming 1:6465a3f5c58a 297 conn->flags &= ~NETCONN_FLAG_CHECK_WRITESPACE;
sunyiming 1:6465a3f5c58a 298 API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
sunyiming 1:6465a3f5c58a 299 }
sunyiming 1:6465a3f5c58a 300 }
sunyiming 1:6465a3f5c58a 301
sunyiming 1:6465a3f5c58a 302 return ERR_OK;
sunyiming 1:6465a3f5c58a 303 }
sunyiming 1:6465a3f5c58a 304
sunyiming 1:6465a3f5c58a 305 /**
sunyiming 1:6465a3f5c58a 306 * Sent callback function for TCP netconns.
sunyiming 1:6465a3f5c58a 307 * Signals the conn->sem and calls API_EVENT.
sunyiming 1:6465a3f5c58a 308 * netconn_write waits for conn->sem if send buffer is low.
sunyiming 1:6465a3f5c58a 309 *
sunyiming 1:6465a3f5c58a 310 * @see tcp.h (struct tcp_pcb.sent) for parameters and return value
sunyiming 1:6465a3f5c58a 311 */
sunyiming 1:6465a3f5c58a 312 static err_t
sunyiming 1:6465a3f5c58a 313 sent_tcp(void *arg, struct tcp_pcb *pcb, u16_t len)
sunyiming 1:6465a3f5c58a 314 {
sunyiming 1:6465a3f5c58a 315 struct netconn *conn = (struct netconn *)arg;
sunyiming 1:6465a3f5c58a 316
sunyiming 1:6465a3f5c58a 317 LWIP_UNUSED_ARG(pcb);
sunyiming 1:6465a3f5c58a 318 LWIP_ASSERT("conn != NULL", (conn != NULL));
sunyiming 1:6465a3f5c58a 319
sunyiming 1:6465a3f5c58a 320 if (conn->state == NETCONN_WRITE) {
sunyiming 1:6465a3f5c58a 321 do_writemore(conn);
sunyiming 1:6465a3f5c58a 322 } else if (conn->state == NETCONN_CLOSE) {
sunyiming 1:6465a3f5c58a 323 do_close_internal(conn);
sunyiming 1:6465a3f5c58a 324 }
sunyiming 1:6465a3f5c58a 325
sunyiming 1:6465a3f5c58a 326 if (conn) {
sunyiming 1:6465a3f5c58a 327 /* If the queued byte- or pbuf-count drops below the configured low-water limit,
sunyiming 1:6465a3f5c58a 328 let select mark this pcb as writable again. */
sunyiming 1:6465a3f5c58a 329 if ((conn->pcb.tcp != NULL) && (tcp_sndbuf(conn->pcb.tcp) > TCP_SNDLOWAT) &&
sunyiming 1:6465a3f5c58a 330 (tcp_sndqueuelen(conn->pcb.tcp) < TCP_SNDQUEUELOWAT)) {
sunyiming 1:6465a3f5c58a 331 conn->flags &= ~NETCONN_FLAG_CHECK_WRITESPACE;
sunyiming 1:6465a3f5c58a 332 API_EVENT(conn, NETCONN_EVT_SENDPLUS, len);
sunyiming 1:6465a3f5c58a 333 }
sunyiming 1:6465a3f5c58a 334 }
sunyiming 1:6465a3f5c58a 335
sunyiming 1:6465a3f5c58a 336 return ERR_OK;
sunyiming 1:6465a3f5c58a 337 }
sunyiming 1:6465a3f5c58a 338
sunyiming 1:6465a3f5c58a 339 /**
sunyiming 1:6465a3f5c58a 340 * Error callback function for TCP netconns.
sunyiming 1:6465a3f5c58a 341 * Signals conn->sem, posts to all conn mboxes and calls API_EVENT.
sunyiming 1:6465a3f5c58a 342 * The application thread has then to decide what to do.
sunyiming 1:6465a3f5c58a 343 *
sunyiming 1:6465a3f5c58a 344 * @see tcp.h (struct tcp_pcb.err) for parameters
sunyiming 1:6465a3f5c58a 345 */
sunyiming 1:6465a3f5c58a 346 static void
sunyiming 1:6465a3f5c58a 347 err_tcp(void *arg, err_t err)
sunyiming 1:6465a3f5c58a 348 {
sunyiming 1:6465a3f5c58a 349 struct netconn *conn;
sunyiming 1:6465a3f5c58a 350 enum netconn_state old_state;
sunyiming 1:6465a3f5c58a 351 SYS_ARCH_DECL_PROTECT(lev);
sunyiming 1:6465a3f5c58a 352
sunyiming 1:6465a3f5c58a 353 conn = (struct netconn *)arg;
sunyiming 1:6465a3f5c58a 354 LWIP_ASSERT("conn != NULL", (conn != NULL));
sunyiming 1:6465a3f5c58a 355
sunyiming 1:6465a3f5c58a 356 conn->pcb.tcp = NULL;
sunyiming 1:6465a3f5c58a 357
sunyiming 1:6465a3f5c58a 358 /* no check since this is always fatal! */
sunyiming 1:6465a3f5c58a 359 SYS_ARCH_PROTECT(lev);
sunyiming 1:6465a3f5c58a 360 conn->last_err = err;
sunyiming 1:6465a3f5c58a 361 SYS_ARCH_UNPROTECT(lev);
sunyiming 1:6465a3f5c58a 362
sunyiming 1:6465a3f5c58a 363 /* reset conn->state now before waking up other threads */
sunyiming 1:6465a3f5c58a 364 old_state = conn->state;
sunyiming 1:6465a3f5c58a 365 conn->state = NETCONN_NONE;
sunyiming 1:6465a3f5c58a 366
sunyiming 1:6465a3f5c58a 367 /* Notify the user layer about a connection error. Used to signal
sunyiming 1:6465a3f5c58a 368 select. */
sunyiming 1:6465a3f5c58a 369 API_EVENT(conn, NETCONN_EVT_ERROR, 0);
sunyiming 1:6465a3f5c58a 370 /* Try to release selects pending on 'read' or 'write', too.
sunyiming 1:6465a3f5c58a 371 They will get an error if they actually try to read or write. */
sunyiming 1:6465a3f5c58a 372 API_EVENT(conn, NETCONN_EVT_RCVPLUS, 0);
sunyiming 1:6465a3f5c58a 373 API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
sunyiming 1:6465a3f5c58a 374
sunyiming 1:6465a3f5c58a 375 /* pass NULL-message to recvmbox to wake up pending recv */
sunyiming 1:6465a3f5c58a 376 if (sys_mbox_valid(&conn->recvmbox)) {
sunyiming 1:6465a3f5c58a 377 /* use trypost to prevent deadlock */
sunyiming 1:6465a3f5c58a 378 sys_mbox_trypost(&conn->recvmbox, NULL);
sunyiming 1:6465a3f5c58a 379 }
sunyiming 1:6465a3f5c58a 380 /* pass NULL-message to acceptmbox to wake up pending accept */
sunyiming 1:6465a3f5c58a 381 if (sys_mbox_valid(&conn->acceptmbox)) {
sunyiming 1:6465a3f5c58a 382 /* use trypost to preven deadlock */
sunyiming 1:6465a3f5c58a 383 sys_mbox_trypost(&conn->acceptmbox, NULL);
sunyiming 1:6465a3f5c58a 384 }
sunyiming 1:6465a3f5c58a 385
sunyiming 1:6465a3f5c58a 386 if ((old_state == NETCONN_WRITE) || (old_state == NETCONN_CLOSE) ||
sunyiming 1:6465a3f5c58a 387 (old_state == NETCONN_CONNECT)) {
sunyiming 1:6465a3f5c58a 388 /* calling do_writemore/do_close_internal is not necessary
sunyiming 1:6465a3f5c58a 389 since the pcb has already been deleted! */
sunyiming 1:6465a3f5c58a 390 int was_nonblocking_connect = IN_NONBLOCKING_CONNECT(conn);
sunyiming 1:6465a3f5c58a 391 SET_NONBLOCKING_CONNECT(conn, 0);
sunyiming 1:6465a3f5c58a 392
sunyiming 1:6465a3f5c58a 393 if (!was_nonblocking_connect) {
sunyiming 1:6465a3f5c58a 394 /* set error return code */
sunyiming 1:6465a3f5c58a 395 LWIP_ASSERT("conn->current_msg != NULL", conn->current_msg != NULL);
sunyiming 1:6465a3f5c58a 396 conn->current_msg->err = err;
sunyiming 1:6465a3f5c58a 397 conn->current_msg = NULL;
sunyiming 1:6465a3f5c58a 398 /* wake up the waiting task */
sunyiming 1:6465a3f5c58a 399 sys_sem_signal(&conn->op_completed);
sunyiming 1:6465a3f5c58a 400 }
sunyiming 1:6465a3f5c58a 401 } else {
sunyiming 1:6465a3f5c58a 402 LWIP_ASSERT("conn->current_msg == NULL", conn->current_msg == NULL);
sunyiming 1:6465a3f5c58a 403 }
sunyiming 1:6465a3f5c58a 404 }
sunyiming 1:6465a3f5c58a 405
sunyiming 1:6465a3f5c58a 406 /**
sunyiming 1:6465a3f5c58a 407 * Setup a tcp_pcb with the correct callback function pointers
sunyiming 1:6465a3f5c58a 408 * and their arguments.
sunyiming 1:6465a3f5c58a 409 *
sunyiming 1:6465a3f5c58a 410 * @param conn the TCP netconn to setup
sunyiming 1:6465a3f5c58a 411 */
sunyiming 1:6465a3f5c58a 412 static void
sunyiming 1:6465a3f5c58a 413 setup_tcp(struct netconn *conn)
sunyiming 1:6465a3f5c58a 414 {
sunyiming 1:6465a3f5c58a 415 struct tcp_pcb *pcb;
sunyiming 1:6465a3f5c58a 416
sunyiming 1:6465a3f5c58a 417 pcb = conn->pcb.tcp;
sunyiming 1:6465a3f5c58a 418 tcp_arg(pcb, conn);
sunyiming 1:6465a3f5c58a 419 tcp_recv(pcb, recv_tcp);
sunyiming 1:6465a3f5c58a 420 tcp_sent(pcb, sent_tcp);
sunyiming 1:6465a3f5c58a 421 tcp_poll(pcb, poll_tcp, 4);
sunyiming 1:6465a3f5c58a 422 tcp_err(pcb, err_tcp);
sunyiming 1:6465a3f5c58a 423 }
sunyiming 1:6465a3f5c58a 424
sunyiming 1:6465a3f5c58a 425 /**
sunyiming 1:6465a3f5c58a 426 * Accept callback function for TCP netconns.
sunyiming 1:6465a3f5c58a 427 * Allocates a new netconn and posts that to conn->acceptmbox.
sunyiming 1:6465a3f5c58a 428 *
sunyiming 1:6465a3f5c58a 429 * @see tcp.h (struct tcp_pcb_listen.accept) for parameters and return value
sunyiming 1:6465a3f5c58a 430 */
sunyiming 1:6465a3f5c58a 431 static err_t
sunyiming 1:6465a3f5c58a 432 accept_function(void *arg, struct tcp_pcb *newpcb, err_t err)
sunyiming 1:6465a3f5c58a 433 {
sunyiming 1:6465a3f5c58a 434 struct netconn *newconn;
sunyiming 1:6465a3f5c58a 435 struct netconn *conn = (struct netconn *)arg;
sunyiming 1:6465a3f5c58a 436
sunyiming 1:6465a3f5c58a 437 LWIP_DEBUGF(API_MSG_DEBUG, ("accept_function: newpcb->tate: %s\n", tcp_debug_state_str(newpcb->state)));
sunyiming 1:6465a3f5c58a 438
sunyiming 1:6465a3f5c58a 439 if (!sys_mbox_valid(&conn->acceptmbox)) {
sunyiming 1:6465a3f5c58a 440 LWIP_DEBUGF(API_MSG_DEBUG, ("accept_function: acceptmbox already deleted\n"));
sunyiming 1:6465a3f5c58a 441 return ERR_VAL;
sunyiming 1:6465a3f5c58a 442 }
sunyiming 1:6465a3f5c58a 443
sunyiming 1:6465a3f5c58a 444 /* We have to set the callback here even though
sunyiming 1:6465a3f5c58a 445 * the new socket is unknown. conn->socket is marked as -1. */
sunyiming 1:6465a3f5c58a 446 newconn = netconn_alloc(conn->type, conn->callback);
sunyiming 1:6465a3f5c58a 447 if (newconn == NULL) {
sunyiming 1:6465a3f5c58a 448 return ERR_MEM;
sunyiming 1:6465a3f5c58a 449 }
sunyiming 1:6465a3f5c58a 450 newconn->pcb.tcp = newpcb;
sunyiming 1:6465a3f5c58a 451 setup_tcp(newconn);
sunyiming 1:6465a3f5c58a 452 /* no protection: when creating the pcb, the netconn is not yet known
sunyiming 1:6465a3f5c58a 453 to the application thread */
sunyiming 1:6465a3f5c58a 454 newconn->last_err = err;
sunyiming 1:6465a3f5c58a 455
sunyiming 1:6465a3f5c58a 456 if (sys_mbox_trypost(&conn->acceptmbox, newconn) != ERR_OK) {
sunyiming 1:6465a3f5c58a 457 /* When returning != ERR_OK, the pcb is aborted in tcp_process(),
sunyiming 1:6465a3f5c58a 458 so do nothing here! */
sunyiming 1:6465a3f5c58a 459 newconn->pcb.tcp = NULL;
sunyiming 1:6465a3f5c58a 460 /* no need to drain since we know the recvmbox is empty. */
sunyiming 1:6465a3f5c58a 461 sys_mbox_free(&newconn->recvmbox);
sunyiming 1:6465a3f5c58a 462 sys_mbox_set_invalid(&newconn->recvmbox);
sunyiming 1:6465a3f5c58a 463 netconn_free(newconn);
sunyiming 1:6465a3f5c58a 464 return ERR_MEM;
sunyiming 1:6465a3f5c58a 465 } else {
sunyiming 1:6465a3f5c58a 466 /* Register event with callback */
sunyiming 1:6465a3f5c58a 467 API_EVENT(conn, NETCONN_EVT_RCVPLUS, 0);
sunyiming 1:6465a3f5c58a 468 }
sunyiming 1:6465a3f5c58a 469
sunyiming 1:6465a3f5c58a 470 return ERR_OK;
sunyiming 1:6465a3f5c58a 471 }
sunyiming 1:6465a3f5c58a 472 #endif /* LWIP_TCP */
sunyiming 1:6465a3f5c58a 473
sunyiming 1:6465a3f5c58a 474 /**
sunyiming 1:6465a3f5c58a 475 * Create a new pcb of a specific type.
sunyiming 1:6465a3f5c58a 476 * Called from do_newconn().
sunyiming 1:6465a3f5c58a 477 *
sunyiming 1:6465a3f5c58a 478 * @param msg the api_msg_msg describing the connection type
sunyiming 1:6465a3f5c58a 479 * @return msg->conn->err, but the return value is currently ignored
sunyiming 1:6465a3f5c58a 480 */
sunyiming 1:6465a3f5c58a 481 static void
sunyiming 1:6465a3f5c58a 482 pcb_new(struct api_msg_msg *msg)
sunyiming 1:6465a3f5c58a 483 {
sunyiming 1:6465a3f5c58a 484 LWIP_ASSERT("pcb_new: pcb already allocated", msg->conn->pcb.tcp == NULL);
sunyiming 1:6465a3f5c58a 485
sunyiming 1:6465a3f5c58a 486 /* Allocate a PCB for this connection */
sunyiming 1:6465a3f5c58a 487 switch(NETCONNTYPE_GROUP(msg->conn->type)) {
sunyiming 1:6465a3f5c58a 488 #if LWIP_RAW
sunyiming 1:6465a3f5c58a 489 case NETCONN_RAW:
sunyiming 1:6465a3f5c58a 490 msg->conn->pcb.raw = raw_new(msg->msg.n.proto);
sunyiming 1:6465a3f5c58a 491 if(msg->conn->pcb.raw == NULL) {
sunyiming 1:6465a3f5c58a 492 msg->err = ERR_MEM;
sunyiming 1:6465a3f5c58a 493 break;
sunyiming 1:6465a3f5c58a 494 }
sunyiming 1:6465a3f5c58a 495 raw_recv(msg->conn->pcb.raw, recv_raw, msg->conn);
sunyiming 1:6465a3f5c58a 496 break;
sunyiming 1:6465a3f5c58a 497 #endif /* LWIP_RAW */
sunyiming 1:6465a3f5c58a 498 #if LWIP_UDP
sunyiming 1:6465a3f5c58a 499 case NETCONN_UDP:
sunyiming 1:6465a3f5c58a 500 msg->conn->pcb.udp = udp_new();
sunyiming 1:6465a3f5c58a 501 if(msg->conn->pcb.udp == NULL) {
sunyiming 1:6465a3f5c58a 502 msg->err = ERR_MEM;
sunyiming 1:6465a3f5c58a 503 break;
sunyiming 1:6465a3f5c58a 504 }
sunyiming 1:6465a3f5c58a 505 #if LWIP_UDPLITE
sunyiming 1:6465a3f5c58a 506 if (msg->conn->type==NETCONN_UDPLITE) {
sunyiming 1:6465a3f5c58a 507 udp_setflags(msg->conn->pcb.udp, UDP_FLAGS_UDPLITE);
sunyiming 1:6465a3f5c58a 508 }
sunyiming 1:6465a3f5c58a 509 #endif /* LWIP_UDPLITE */
sunyiming 1:6465a3f5c58a 510 if (msg->conn->type==NETCONN_UDPNOCHKSUM) {
sunyiming 1:6465a3f5c58a 511 udp_setflags(msg->conn->pcb.udp, UDP_FLAGS_NOCHKSUM);
sunyiming 1:6465a3f5c58a 512 }
sunyiming 1:6465a3f5c58a 513 udp_recv(msg->conn->pcb.udp, recv_udp, msg->conn);
sunyiming 1:6465a3f5c58a 514 break;
sunyiming 1:6465a3f5c58a 515 #endif /* LWIP_UDP */
sunyiming 1:6465a3f5c58a 516 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 517 case NETCONN_TCP:
sunyiming 1:6465a3f5c58a 518 msg->conn->pcb.tcp = tcp_new();
sunyiming 1:6465a3f5c58a 519 if(msg->conn->pcb.tcp == NULL) {
sunyiming 1:6465a3f5c58a 520 msg->err = ERR_MEM;
sunyiming 1:6465a3f5c58a 521 break;
sunyiming 1:6465a3f5c58a 522 }
sunyiming 1:6465a3f5c58a 523 setup_tcp(msg->conn);
sunyiming 1:6465a3f5c58a 524 break;
sunyiming 1:6465a3f5c58a 525 #endif /* LWIP_TCP */
sunyiming 1:6465a3f5c58a 526 default:
sunyiming 1:6465a3f5c58a 527 /* Unsupported netconn type, e.g. protocol disabled */
sunyiming 1:6465a3f5c58a 528 msg->err = ERR_VAL;
sunyiming 1:6465a3f5c58a 529 break;
sunyiming 1:6465a3f5c58a 530 }
sunyiming 1:6465a3f5c58a 531 }
sunyiming 1:6465a3f5c58a 532
sunyiming 1:6465a3f5c58a 533 /**
sunyiming 1:6465a3f5c58a 534 * Create a new pcb of a specific type inside a netconn.
sunyiming 1:6465a3f5c58a 535 * Called from netconn_new_with_proto_and_callback.
sunyiming 1:6465a3f5c58a 536 *
sunyiming 1:6465a3f5c58a 537 * @param msg the api_msg_msg describing the connection type
sunyiming 1:6465a3f5c58a 538 */
sunyiming 1:6465a3f5c58a 539 void
sunyiming 1:6465a3f5c58a 540 do_newconn(struct api_msg_msg *msg)
sunyiming 1:6465a3f5c58a 541 {
sunyiming 1:6465a3f5c58a 542 msg->err = ERR_OK;
sunyiming 1:6465a3f5c58a 543 if(msg->conn->pcb.tcp == NULL) {
sunyiming 1:6465a3f5c58a 544 pcb_new(msg);
sunyiming 1:6465a3f5c58a 545 }
sunyiming 1:6465a3f5c58a 546 /* Else? This "new" connection already has a PCB allocated. */
sunyiming 1:6465a3f5c58a 547 /* Is this an error condition? Should it be deleted? */
sunyiming 1:6465a3f5c58a 548 /* We currently just are happy and return. */
sunyiming 1:6465a3f5c58a 549
sunyiming 1:6465a3f5c58a 550 TCPIP_APIMSG_ACK(msg);
sunyiming 1:6465a3f5c58a 551 }
sunyiming 1:6465a3f5c58a 552
sunyiming 1:6465a3f5c58a 553 /**
sunyiming 1:6465a3f5c58a 554 * Create a new netconn (of a specific type) that has a callback function.
sunyiming 1:6465a3f5c58a 555 * The corresponding pcb is NOT created!
sunyiming 1:6465a3f5c58a 556 *
sunyiming 1:6465a3f5c58a 557 * @param t the type of 'connection' to create (@see enum netconn_type)
sunyiming 1:6465a3f5c58a 558 * @param proto the IP protocol for RAW IP pcbs
sunyiming 1:6465a3f5c58a 559 * @param callback a function to call on status changes (RX available, TX'ed)
sunyiming 1:6465a3f5c58a 560 * @return a newly allocated struct netconn or
sunyiming 1:6465a3f5c58a 561 * NULL on memory error
sunyiming 1:6465a3f5c58a 562 */
sunyiming 1:6465a3f5c58a 563 struct netconn*
sunyiming 1:6465a3f5c58a 564 netconn_alloc(enum netconn_type t, netconn_callback callback)
sunyiming 1:6465a3f5c58a 565 {
sunyiming 1:6465a3f5c58a 566 struct netconn *conn;
sunyiming 1:6465a3f5c58a 567 int size;
sunyiming 1:6465a3f5c58a 568
sunyiming 1:6465a3f5c58a 569 conn = (struct netconn *)memp_malloc(MEMP_NETCONN);
sunyiming 1:6465a3f5c58a 570 if (conn == NULL) {
sunyiming 1:6465a3f5c58a 571 return NULL;
sunyiming 1:6465a3f5c58a 572 }
sunyiming 1:6465a3f5c58a 573
sunyiming 1:6465a3f5c58a 574 conn->last_err = ERR_OK;
sunyiming 1:6465a3f5c58a 575 conn->type = t;
sunyiming 1:6465a3f5c58a 576 conn->pcb.tcp = NULL;
sunyiming 1:6465a3f5c58a 577
sunyiming 1:6465a3f5c58a 578 #if (DEFAULT_RAW_RECVMBOX_SIZE == DEFAULT_UDP_RECVMBOX_SIZE) && \
sunyiming 1:6465a3f5c58a 579 (DEFAULT_RAW_RECVMBOX_SIZE == DEFAULT_TCP_RECVMBOX_SIZE)
sunyiming 1:6465a3f5c58a 580 size = DEFAULT_RAW_RECVMBOX_SIZE;
sunyiming 1:6465a3f5c58a 581 #else
sunyiming 1:6465a3f5c58a 582 switch(NETCONNTYPE_GROUP(t)) {
sunyiming 1:6465a3f5c58a 583 #if LWIP_RAW
sunyiming 1:6465a3f5c58a 584 case NETCONN_RAW:
sunyiming 1:6465a3f5c58a 585 size = DEFAULT_RAW_RECVMBOX_SIZE;
sunyiming 1:6465a3f5c58a 586 break;
sunyiming 1:6465a3f5c58a 587 #endif /* LWIP_RAW */
sunyiming 1:6465a3f5c58a 588 #if LWIP_UDP
sunyiming 1:6465a3f5c58a 589 case NETCONN_UDP:
sunyiming 1:6465a3f5c58a 590 size = DEFAULT_UDP_RECVMBOX_SIZE;
sunyiming 1:6465a3f5c58a 591 break;
sunyiming 1:6465a3f5c58a 592 #endif /* LWIP_UDP */
sunyiming 1:6465a3f5c58a 593 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 594 case NETCONN_TCP:
sunyiming 1:6465a3f5c58a 595 size = DEFAULT_TCP_RECVMBOX_SIZE;
sunyiming 1:6465a3f5c58a 596 break;
sunyiming 1:6465a3f5c58a 597 #endif /* LWIP_TCP */
sunyiming 1:6465a3f5c58a 598 default:
sunyiming 1:6465a3f5c58a 599 LWIP_ASSERT("netconn_alloc: undefined netconn_type", 0);
sunyiming 1:6465a3f5c58a 600 break;
sunyiming 1:6465a3f5c58a 601 }
sunyiming 1:6465a3f5c58a 602 #endif
sunyiming 1:6465a3f5c58a 603
sunyiming 1:6465a3f5c58a 604 if (sys_sem_new(&conn->op_completed, 0) != ERR_OK) {
sunyiming 1:6465a3f5c58a 605 memp_free(MEMP_NETCONN, conn);
sunyiming 1:6465a3f5c58a 606 return NULL;
sunyiming 1:6465a3f5c58a 607 }
sunyiming 1:6465a3f5c58a 608 if (sys_mbox_new(&conn->recvmbox, size) != ERR_OK) {
sunyiming 1:6465a3f5c58a 609 sys_sem_free(&conn->op_completed);
sunyiming 1:6465a3f5c58a 610 memp_free(MEMP_NETCONN, conn);
sunyiming 1:6465a3f5c58a 611 return NULL;
sunyiming 1:6465a3f5c58a 612 }
sunyiming 1:6465a3f5c58a 613
sunyiming 1:6465a3f5c58a 614 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 615 sys_mbox_set_invalid(&conn->acceptmbox);
sunyiming 1:6465a3f5c58a 616 #endif
sunyiming 1:6465a3f5c58a 617 conn->state = NETCONN_NONE;
sunyiming 1:6465a3f5c58a 618 #if LWIP_SOCKET
sunyiming 1:6465a3f5c58a 619 /* initialize socket to -1 since 0 is a valid socket */
sunyiming 1:6465a3f5c58a 620 conn->socket = -1;
sunyiming 1:6465a3f5c58a 621 #endif /* LWIP_SOCKET */
sunyiming 1:6465a3f5c58a 622 conn->callback = callback;
sunyiming 1:6465a3f5c58a 623 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 624 conn->current_msg = NULL;
sunyiming 1:6465a3f5c58a 625 conn->write_offset = 0;
sunyiming 1:6465a3f5c58a 626 #endif /* LWIP_TCP */
sunyiming 1:6465a3f5c58a 627 #if LWIP_SO_RCVTIMEO
sunyiming 1:6465a3f5c58a 628 conn->recv_timeout = 0;
sunyiming 1:6465a3f5c58a 629 #endif /* LWIP_SO_RCVTIMEO */
sunyiming 1:6465a3f5c58a 630 #if LWIP_SO_RCVBUF
sunyiming 1:6465a3f5c58a 631 conn->recv_bufsize = RECV_BUFSIZE_DEFAULT;
sunyiming 1:6465a3f5c58a 632 conn->recv_avail = 0;
sunyiming 1:6465a3f5c58a 633 #endif /* LWIP_SO_RCVBUF */
sunyiming 1:6465a3f5c58a 634 conn->flags = 0;
sunyiming 1:6465a3f5c58a 635 return conn;
sunyiming 1:6465a3f5c58a 636 }
sunyiming 1:6465a3f5c58a 637
sunyiming 1:6465a3f5c58a 638 /**
sunyiming 1:6465a3f5c58a 639 * Delete a netconn and all its resources.
sunyiming 1:6465a3f5c58a 640 * The pcb is NOT freed (since we might not be in the right thread context do this).
sunyiming 1:6465a3f5c58a 641 *
sunyiming 1:6465a3f5c58a 642 * @param conn the netconn to free
sunyiming 1:6465a3f5c58a 643 */
sunyiming 1:6465a3f5c58a 644 void
sunyiming 1:6465a3f5c58a 645 netconn_free(struct netconn *conn)
sunyiming 1:6465a3f5c58a 646 {
sunyiming 1:6465a3f5c58a 647 LWIP_ASSERT("PCB must be deallocated outside this function", conn->pcb.tcp == NULL);
sunyiming 1:6465a3f5c58a 648 LWIP_ASSERT("recvmbox must be deallocated before calling this function",
sunyiming 1:6465a3f5c58a 649 !sys_mbox_valid(&conn->recvmbox));
sunyiming 1:6465a3f5c58a 650 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 651 LWIP_ASSERT("acceptmbox must be deallocated before calling this function",
sunyiming 1:6465a3f5c58a 652 !sys_mbox_valid(&conn->acceptmbox));
sunyiming 1:6465a3f5c58a 653 #endif /* LWIP_TCP */
sunyiming 1:6465a3f5c58a 654
sunyiming 1:6465a3f5c58a 655 sys_sem_free(&conn->op_completed);
sunyiming 1:6465a3f5c58a 656 sys_sem_set_invalid(&conn->op_completed);
sunyiming 1:6465a3f5c58a 657
sunyiming 1:6465a3f5c58a 658 memp_free(MEMP_NETCONN, conn);
sunyiming 1:6465a3f5c58a 659 }
sunyiming 1:6465a3f5c58a 660
sunyiming 1:6465a3f5c58a 661 /**
sunyiming 1:6465a3f5c58a 662 * Delete rcvmbox and acceptmbox of a netconn and free the left-over data in
sunyiming 1:6465a3f5c58a 663 * these mboxes
sunyiming 1:6465a3f5c58a 664 *
sunyiming 1:6465a3f5c58a 665 * @param conn the netconn to free
sunyiming 1:6465a3f5c58a 666 * @bytes_drained bytes drained from recvmbox
sunyiming 1:6465a3f5c58a 667 * @accepts_drained pending connections drained from acceptmbox
sunyiming 1:6465a3f5c58a 668 */
sunyiming 1:6465a3f5c58a 669 static void
sunyiming 1:6465a3f5c58a 670 netconn_drain(struct netconn *conn)
sunyiming 1:6465a3f5c58a 671 {
sunyiming 1:6465a3f5c58a 672 void *mem;
sunyiming 1:6465a3f5c58a 673 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 674 struct pbuf *p;
sunyiming 1:6465a3f5c58a 675 #endif /* LWIP_TCP */
sunyiming 1:6465a3f5c58a 676
sunyiming 1:6465a3f5c58a 677 /* This runs in tcpip_thread, so we don't need to lock against rx packets */
sunyiming 1:6465a3f5c58a 678
sunyiming 1:6465a3f5c58a 679 /* Delete and drain the recvmbox. */
sunyiming 1:6465a3f5c58a 680 if (sys_mbox_valid(&conn->recvmbox)) {
sunyiming 1:6465a3f5c58a 681 while (sys_mbox_tryfetch(&conn->recvmbox, &mem) != SYS_MBOX_EMPTY) {
sunyiming 1:6465a3f5c58a 682 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 683 if (conn->type == NETCONN_TCP) {
sunyiming 1:6465a3f5c58a 684 if(mem != NULL) {
sunyiming 1:6465a3f5c58a 685 p = (struct pbuf*)mem;
sunyiming 1:6465a3f5c58a 686 /* pcb might be set to NULL already by err_tcp() */
sunyiming 1:6465a3f5c58a 687 if (conn->pcb.tcp != NULL) {
sunyiming 1:6465a3f5c58a 688 tcp_recved(conn->pcb.tcp, p->tot_len);
sunyiming 1:6465a3f5c58a 689 }
sunyiming 1:6465a3f5c58a 690 pbuf_free(p);
sunyiming 1:6465a3f5c58a 691 }
sunyiming 1:6465a3f5c58a 692 } else
sunyiming 1:6465a3f5c58a 693 #endif /* LWIP_TCP */
sunyiming 1:6465a3f5c58a 694 {
sunyiming 1:6465a3f5c58a 695 netbuf_delete((struct netbuf *)mem);
sunyiming 1:6465a3f5c58a 696 }
sunyiming 1:6465a3f5c58a 697 }
sunyiming 1:6465a3f5c58a 698 sys_mbox_free(&conn->recvmbox);
sunyiming 1:6465a3f5c58a 699 sys_mbox_set_invalid(&conn->recvmbox);
sunyiming 1:6465a3f5c58a 700 }
sunyiming 1:6465a3f5c58a 701
sunyiming 1:6465a3f5c58a 702 /* Delete and drain the acceptmbox. */
sunyiming 1:6465a3f5c58a 703 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 704 if (sys_mbox_valid(&conn->acceptmbox)) {
sunyiming 1:6465a3f5c58a 705 while (sys_mbox_tryfetch(&conn->acceptmbox, &mem) != SYS_MBOX_EMPTY) {
sunyiming 1:6465a3f5c58a 706 struct netconn *newconn = (struct netconn *)mem;
sunyiming 1:6465a3f5c58a 707 /* Only tcp pcbs have an acceptmbox, so no need to check conn->type */
sunyiming 1:6465a3f5c58a 708 /* pcb might be set to NULL already by err_tcp() */
sunyiming 1:6465a3f5c58a 709 if (conn->pcb.tcp != NULL) {
sunyiming 1:6465a3f5c58a 710 tcp_accepted(conn->pcb.tcp);
sunyiming 1:6465a3f5c58a 711 }
sunyiming 1:6465a3f5c58a 712 /* drain recvmbox */
sunyiming 1:6465a3f5c58a 713 netconn_drain(newconn);
sunyiming 1:6465a3f5c58a 714 if (newconn->pcb.tcp != NULL) {
sunyiming 1:6465a3f5c58a 715 tcp_abort(newconn->pcb.tcp);
sunyiming 1:6465a3f5c58a 716 newconn->pcb.tcp = NULL;
sunyiming 1:6465a3f5c58a 717 }
sunyiming 1:6465a3f5c58a 718 netconn_free(newconn);
sunyiming 1:6465a3f5c58a 719 }
sunyiming 1:6465a3f5c58a 720 sys_mbox_free(&conn->acceptmbox);
sunyiming 1:6465a3f5c58a 721 sys_mbox_set_invalid(&conn->acceptmbox);
sunyiming 1:6465a3f5c58a 722 }
sunyiming 1:6465a3f5c58a 723 #endif /* LWIP_TCP */
sunyiming 1:6465a3f5c58a 724 }
sunyiming 1:6465a3f5c58a 725
sunyiming 1:6465a3f5c58a 726 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 727 /**
sunyiming 1:6465a3f5c58a 728 * Internal helper function to close a TCP netconn: since this sometimes
sunyiming 1:6465a3f5c58a 729 * doesn't work at the first attempt, this function is called from multiple
sunyiming 1:6465a3f5c58a 730 * places.
sunyiming 1:6465a3f5c58a 731 *
sunyiming 1:6465a3f5c58a 732 * @param conn the TCP netconn to close
sunyiming 1:6465a3f5c58a 733 */
sunyiming 1:6465a3f5c58a 734 static void
sunyiming 1:6465a3f5c58a 735 do_close_internal(struct netconn *conn)
sunyiming 1:6465a3f5c58a 736 {
sunyiming 1:6465a3f5c58a 737 err_t err;
sunyiming 1:6465a3f5c58a 738 u8_t shut, shut_rx, shut_tx, close;
sunyiming 1:6465a3f5c58a 739
sunyiming 1:6465a3f5c58a 740 LWIP_ASSERT("invalid conn", (conn != NULL));
sunyiming 1:6465a3f5c58a 741 LWIP_ASSERT("this is for tcp netconns only", (conn->type == NETCONN_TCP));
sunyiming 1:6465a3f5c58a 742 LWIP_ASSERT("conn must be in state NETCONN_CLOSE", (conn->state == NETCONN_CLOSE));
sunyiming 1:6465a3f5c58a 743 LWIP_ASSERT("pcb already closed", (conn->pcb.tcp != NULL));
sunyiming 1:6465a3f5c58a 744 LWIP_ASSERT("conn->current_msg != NULL", conn->current_msg != NULL);
sunyiming 1:6465a3f5c58a 745
sunyiming 1:6465a3f5c58a 746 shut = conn->current_msg->msg.sd.shut;
sunyiming 1:6465a3f5c58a 747 shut_rx = shut & NETCONN_SHUT_RD;
sunyiming 1:6465a3f5c58a 748 shut_tx = shut & NETCONN_SHUT_WR;
sunyiming 1:6465a3f5c58a 749 /* shutting down both ends is the same as closing */
sunyiming 1:6465a3f5c58a 750 close = shut == NETCONN_SHUT_RDWR;
sunyiming 1:6465a3f5c58a 751
sunyiming 1:6465a3f5c58a 752 /* Set back some callback pointers */
sunyiming 1:6465a3f5c58a 753 if (close) {
sunyiming 1:6465a3f5c58a 754 tcp_arg(conn->pcb.tcp, NULL);
sunyiming 1:6465a3f5c58a 755 }
sunyiming 1:6465a3f5c58a 756 if (conn->pcb.tcp->state == LISTEN) {
sunyiming 1:6465a3f5c58a 757 tcp_accept(conn->pcb.tcp, NULL);
sunyiming 1:6465a3f5c58a 758 } else {
sunyiming 1:6465a3f5c58a 759 /* some callbacks have to be reset if tcp_close is not successful */
sunyiming 1:6465a3f5c58a 760 if (shut_rx) {
sunyiming 1:6465a3f5c58a 761 tcp_recv(conn->pcb.tcp, NULL);
sunyiming 1:6465a3f5c58a 762 tcp_accept(conn->pcb.tcp, NULL);
sunyiming 1:6465a3f5c58a 763 }
sunyiming 1:6465a3f5c58a 764 if (shut_tx) {
sunyiming 1:6465a3f5c58a 765 tcp_sent(conn->pcb.tcp, NULL);
sunyiming 1:6465a3f5c58a 766 }
sunyiming 1:6465a3f5c58a 767 if (close) {
sunyiming 1:6465a3f5c58a 768 tcp_poll(conn->pcb.tcp, NULL, 4);
sunyiming 1:6465a3f5c58a 769 tcp_err(conn->pcb.tcp, NULL);
sunyiming 1:6465a3f5c58a 770 }
sunyiming 1:6465a3f5c58a 771 }
sunyiming 1:6465a3f5c58a 772 /* Try to close the connection */
sunyiming 1:6465a3f5c58a 773 if (shut == NETCONN_SHUT_RDWR) {
sunyiming 1:6465a3f5c58a 774 err = tcp_close(conn->pcb.tcp);
sunyiming 1:6465a3f5c58a 775 } else {
sunyiming 1:6465a3f5c58a 776 err = tcp_shutdown(conn->pcb.tcp, shut & NETCONN_SHUT_RD, shut & NETCONN_SHUT_WR);
sunyiming 1:6465a3f5c58a 777 }
sunyiming 1:6465a3f5c58a 778 if (err == ERR_OK) {
sunyiming 1:6465a3f5c58a 779 /* Closing succeeded */
sunyiming 1:6465a3f5c58a 780 conn->current_msg->err = ERR_OK;
sunyiming 1:6465a3f5c58a 781 conn->current_msg = NULL;
sunyiming 1:6465a3f5c58a 782 conn->state = NETCONN_NONE;
sunyiming 1:6465a3f5c58a 783 /* Set back some callback pointers as conn is going away */
sunyiming 1:6465a3f5c58a 784 conn->pcb.tcp = NULL;
sunyiming 1:6465a3f5c58a 785 /* Trigger select() in socket layer. Make sure everybody notices activity
sunyiming 1:6465a3f5c58a 786 on the connection, error first! */
sunyiming 1:6465a3f5c58a 787 if (close) {
sunyiming 1:6465a3f5c58a 788 API_EVENT(conn, NETCONN_EVT_ERROR, 0);
sunyiming 1:6465a3f5c58a 789 }
sunyiming 1:6465a3f5c58a 790 if (shut_rx) {
sunyiming 1:6465a3f5c58a 791 API_EVENT(conn, NETCONN_EVT_RCVPLUS, 0);
sunyiming 1:6465a3f5c58a 792 }
sunyiming 1:6465a3f5c58a 793 if (shut_tx) {
sunyiming 1:6465a3f5c58a 794 API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
sunyiming 1:6465a3f5c58a 795 }
sunyiming 1:6465a3f5c58a 796 /* wake up the application task */
sunyiming 1:6465a3f5c58a 797 sys_sem_signal(&conn->op_completed);
sunyiming 1:6465a3f5c58a 798 } else {
sunyiming 1:6465a3f5c58a 799 /* Closing failed, restore some of the callbacks */
sunyiming 1:6465a3f5c58a 800 /* Closing of listen pcb will never fail! */
sunyiming 1:6465a3f5c58a 801 LWIP_ASSERT("Closing a listen pcb may not fail!", (conn->pcb.tcp->state != LISTEN));
sunyiming 1:6465a3f5c58a 802 tcp_sent(conn->pcb.tcp, sent_tcp);
sunyiming 1:6465a3f5c58a 803 tcp_poll(conn->pcb.tcp, poll_tcp, 4);
sunyiming 1:6465a3f5c58a 804 tcp_err(conn->pcb.tcp, err_tcp);
sunyiming 1:6465a3f5c58a 805 tcp_arg(conn->pcb.tcp, conn);
sunyiming 1:6465a3f5c58a 806 /* don't restore recv callback: we don't want to receive any more data */
sunyiming 1:6465a3f5c58a 807 }
sunyiming 1:6465a3f5c58a 808 /* If closing didn't succeed, we get called again either
sunyiming 1:6465a3f5c58a 809 from poll_tcp or from sent_tcp */
sunyiming 1:6465a3f5c58a 810 }
sunyiming 1:6465a3f5c58a 811 #endif /* LWIP_TCP */
sunyiming 1:6465a3f5c58a 812
sunyiming 1:6465a3f5c58a 813 /**
sunyiming 1:6465a3f5c58a 814 * Delete the pcb inside a netconn.
sunyiming 1:6465a3f5c58a 815 * Called from netconn_delete.
sunyiming 1:6465a3f5c58a 816 *
sunyiming 1:6465a3f5c58a 817 * @param msg the api_msg_msg pointing to the connection
sunyiming 1:6465a3f5c58a 818 */
sunyiming 1:6465a3f5c58a 819 void
sunyiming 1:6465a3f5c58a 820 do_delconn(struct api_msg_msg *msg)
sunyiming 1:6465a3f5c58a 821 {
sunyiming 1:6465a3f5c58a 822 /* @todo TCP: abort running write/connect? */
sunyiming 1:6465a3f5c58a 823 if ((msg->conn->state != NETCONN_NONE) &&
sunyiming 1:6465a3f5c58a 824 (msg->conn->state != NETCONN_LISTEN) &&
sunyiming 1:6465a3f5c58a 825 (msg->conn->state != NETCONN_CONNECT)) {
sunyiming 1:6465a3f5c58a 826 /* this only happens for TCP netconns */
sunyiming 1:6465a3f5c58a 827 LWIP_ASSERT("msg->conn->type == NETCONN_TCP", msg->conn->type == NETCONN_TCP);
sunyiming 1:6465a3f5c58a 828 msg->err = ERR_INPROGRESS;
sunyiming 1:6465a3f5c58a 829 } else {
sunyiming 1:6465a3f5c58a 830 LWIP_ASSERT("blocking connect in progress",
sunyiming 1:6465a3f5c58a 831 (msg->conn->state != NETCONN_CONNECT) || IN_NONBLOCKING_CONNECT(msg->conn));
sunyiming 1:6465a3f5c58a 832 /* Drain and delete mboxes */
sunyiming 1:6465a3f5c58a 833 netconn_drain(msg->conn);
sunyiming 1:6465a3f5c58a 834
sunyiming 1:6465a3f5c58a 835 if (msg->conn->pcb.tcp != NULL) {
sunyiming 1:6465a3f5c58a 836
sunyiming 1:6465a3f5c58a 837 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
sunyiming 1:6465a3f5c58a 838 #if LWIP_RAW
sunyiming 1:6465a3f5c58a 839 case NETCONN_RAW:
sunyiming 1:6465a3f5c58a 840 raw_remove(msg->conn->pcb.raw);
sunyiming 1:6465a3f5c58a 841 break;
sunyiming 1:6465a3f5c58a 842 #endif /* LWIP_RAW */
sunyiming 1:6465a3f5c58a 843 #if LWIP_UDP
sunyiming 1:6465a3f5c58a 844 case NETCONN_UDP:
sunyiming 1:6465a3f5c58a 845 msg->conn->pcb.udp->recv_arg = NULL;
sunyiming 1:6465a3f5c58a 846 udp_remove(msg->conn->pcb.udp);
sunyiming 1:6465a3f5c58a 847 break;
sunyiming 1:6465a3f5c58a 848 #endif /* LWIP_UDP */
sunyiming 1:6465a3f5c58a 849 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 850 case NETCONN_TCP:
sunyiming 1:6465a3f5c58a 851 LWIP_ASSERT("already writing or closing", msg->conn->current_msg == NULL &&
sunyiming 1:6465a3f5c58a 852 msg->conn->write_offset == 0);
sunyiming 1:6465a3f5c58a 853 msg->conn->state = NETCONN_CLOSE;
sunyiming 1:6465a3f5c58a 854 msg->msg.sd.shut = NETCONN_SHUT_RDWR;
sunyiming 1:6465a3f5c58a 855 msg->conn->current_msg = msg;
sunyiming 1:6465a3f5c58a 856 do_close_internal(msg->conn);
sunyiming 1:6465a3f5c58a 857 /* API_EVENT is called inside do_close_internal, before releasing
sunyiming 1:6465a3f5c58a 858 the application thread, so we can return at this point! */
sunyiming 1:6465a3f5c58a 859 return;
sunyiming 1:6465a3f5c58a 860 #endif /* LWIP_TCP */
sunyiming 1:6465a3f5c58a 861 default:
sunyiming 1:6465a3f5c58a 862 break;
sunyiming 1:6465a3f5c58a 863 }
sunyiming 1:6465a3f5c58a 864 msg->conn->pcb.tcp = NULL;
sunyiming 1:6465a3f5c58a 865 }
sunyiming 1:6465a3f5c58a 866 /* tcp netconns don't come here! */
sunyiming 1:6465a3f5c58a 867
sunyiming 1:6465a3f5c58a 868 /* @todo: this lets select make the socket readable and writable,
sunyiming 1:6465a3f5c58a 869 which is wrong! errfd instead? */
sunyiming 1:6465a3f5c58a 870 API_EVENT(msg->conn, NETCONN_EVT_RCVPLUS, 0);
sunyiming 1:6465a3f5c58a 871 API_EVENT(msg->conn, NETCONN_EVT_SENDPLUS, 0);
sunyiming 1:6465a3f5c58a 872 }
sunyiming 1:6465a3f5c58a 873 if (sys_sem_valid(&msg->conn->op_completed)) {
sunyiming 1:6465a3f5c58a 874 sys_sem_signal(&msg->conn->op_completed);
sunyiming 1:6465a3f5c58a 875 }
sunyiming 1:6465a3f5c58a 876 }
sunyiming 1:6465a3f5c58a 877
sunyiming 1:6465a3f5c58a 878 /**
sunyiming 1:6465a3f5c58a 879 * Bind a pcb contained in a netconn
sunyiming 1:6465a3f5c58a 880 * Called from netconn_bind.
sunyiming 1:6465a3f5c58a 881 *
sunyiming 1:6465a3f5c58a 882 * @param msg the api_msg_msg pointing to the connection and containing
sunyiming 1:6465a3f5c58a 883 * the IP address and port to bind to
sunyiming 1:6465a3f5c58a 884 */
sunyiming 1:6465a3f5c58a 885 void
sunyiming 1:6465a3f5c58a 886 do_bind(struct api_msg_msg *msg)
sunyiming 1:6465a3f5c58a 887 {
sunyiming 1:6465a3f5c58a 888 if (ERR_IS_FATAL(msg->conn->last_err)) {
sunyiming 1:6465a3f5c58a 889 msg->err = msg->conn->last_err;
sunyiming 1:6465a3f5c58a 890 } else {
sunyiming 1:6465a3f5c58a 891 msg->err = ERR_VAL;
sunyiming 1:6465a3f5c58a 892 if (msg->conn->pcb.tcp != NULL) {
sunyiming 1:6465a3f5c58a 893 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
sunyiming 1:6465a3f5c58a 894 #if LWIP_RAW
sunyiming 1:6465a3f5c58a 895 case NETCONN_RAW:
sunyiming 1:6465a3f5c58a 896 msg->err = raw_bind(msg->conn->pcb.raw, msg->msg.bc.ipaddr);
sunyiming 1:6465a3f5c58a 897 break;
sunyiming 1:6465a3f5c58a 898 #endif /* LWIP_RAW */
sunyiming 1:6465a3f5c58a 899 #if LWIP_UDP
sunyiming 1:6465a3f5c58a 900 case NETCONN_UDP:
sunyiming 1:6465a3f5c58a 901 msg->err = udp_bind(msg->conn->pcb.udp, msg->msg.bc.ipaddr, msg->msg.bc.port);
sunyiming 1:6465a3f5c58a 902 break;
sunyiming 1:6465a3f5c58a 903 #endif /* LWIP_UDP */
sunyiming 1:6465a3f5c58a 904 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 905 case NETCONN_TCP:
sunyiming 1:6465a3f5c58a 906 msg->err = tcp_bind(msg->conn->pcb.tcp, msg->msg.bc.ipaddr, msg->msg.bc.port);
sunyiming 1:6465a3f5c58a 907 break;
sunyiming 1:6465a3f5c58a 908 #endif /* LWIP_TCP */
sunyiming 1:6465a3f5c58a 909 default:
sunyiming 1:6465a3f5c58a 910 break;
sunyiming 1:6465a3f5c58a 911 }
sunyiming 1:6465a3f5c58a 912 }
sunyiming 1:6465a3f5c58a 913 }
sunyiming 1:6465a3f5c58a 914 TCPIP_APIMSG_ACK(msg);
sunyiming 1:6465a3f5c58a 915 }
sunyiming 1:6465a3f5c58a 916
sunyiming 1:6465a3f5c58a 917 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 918 /**
sunyiming 1:6465a3f5c58a 919 * TCP callback function if a connection (opened by tcp_connect/do_connect) has
sunyiming 1:6465a3f5c58a 920 * been established (or reset by the remote host).
sunyiming 1:6465a3f5c58a 921 *
sunyiming 1:6465a3f5c58a 922 * @see tcp.h (struct tcp_pcb.connected) for parameters and return values
sunyiming 1:6465a3f5c58a 923 */
sunyiming 1:6465a3f5c58a 924 static err_t
sunyiming 1:6465a3f5c58a 925 do_connected(void *arg, struct tcp_pcb *pcb, err_t err)
sunyiming 1:6465a3f5c58a 926 {
sunyiming 1:6465a3f5c58a 927 struct netconn *conn;
sunyiming 1:6465a3f5c58a 928 int was_blocking;
sunyiming 1:6465a3f5c58a 929
sunyiming 1:6465a3f5c58a 930 LWIP_UNUSED_ARG(pcb);
sunyiming 1:6465a3f5c58a 931
sunyiming 1:6465a3f5c58a 932 conn = (struct netconn *)arg;
sunyiming 1:6465a3f5c58a 933
sunyiming 1:6465a3f5c58a 934 if (conn == NULL) {
sunyiming 1:6465a3f5c58a 935 return ERR_VAL;
sunyiming 1:6465a3f5c58a 936 }
sunyiming 1:6465a3f5c58a 937
sunyiming 1:6465a3f5c58a 938 LWIP_ASSERT("conn->state == NETCONN_CONNECT", conn->state == NETCONN_CONNECT);
sunyiming 1:6465a3f5c58a 939 LWIP_ASSERT("(conn->current_msg != NULL) || conn->in_non_blocking_connect",
sunyiming 1:6465a3f5c58a 940 (conn->current_msg != NULL) || IN_NONBLOCKING_CONNECT(conn));
sunyiming 1:6465a3f5c58a 941
sunyiming 1:6465a3f5c58a 942 if (conn->current_msg != NULL) {
sunyiming 1:6465a3f5c58a 943 conn->current_msg->err = err;
sunyiming 1:6465a3f5c58a 944 }
sunyiming 1:6465a3f5c58a 945 if ((conn->type == NETCONN_TCP) && (err == ERR_OK)) {
sunyiming 1:6465a3f5c58a 946 setup_tcp(conn);
sunyiming 1:6465a3f5c58a 947 }
sunyiming 1:6465a3f5c58a 948 was_blocking = !IN_NONBLOCKING_CONNECT(conn);
sunyiming 1:6465a3f5c58a 949 SET_NONBLOCKING_CONNECT(conn, 0);
sunyiming 1:6465a3f5c58a 950 conn->current_msg = NULL;
sunyiming 1:6465a3f5c58a 951 conn->state = NETCONN_NONE;
sunyiming 1:6465a3f5c58a 952 if (!was_blocking) {
sunyiming 1:6465a3f5c58a 953 NETCONN_SET_SAFE_ERR(conn, ERR_OK);
sunyiming 1:6465a3f5c58a 954 }
sunyiming 1:6465a3f5c58a 955 API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
sunyiming 1:6465a3f5c58a 956
sunyiming 1:6465a3f5c58a 957 if (was_blocking) {
sunyiming 1:6465a3f5c58a 958 sys_sem_signal(&conn->op_completed);
sunyiming 1:6465a3f5c58a 959 }
sunyiming 1:6465a3f5c58a 960 return ERR_OK;
sunyiming 1:6465a3f5c58a 961 }
sunyiming 1:6465a3f5c58a 962 #endif /* LWIP_TCP */
sunyiming 1:6465a3f5c58a 963
sunyiming 1:6465a3f5c58a 964 /**
sunyiming 1:6465a3f5c58a 965 * Connect a pcb contained inside a netconn
sunyiming 1:6465a3f5c58a 966 * Called from netconn_connect.
sunyiming 1:6465a3f5c58a 967 *
sunyiming 1:6465a3f5c58a 968 * @param msg the api_msg_msg pointing to the connection and containing
sunyiming 1:6465a3f5c58a 969 * the IP address and port to connect to
sunyiming 1:6465a3f5c58a 970 */
sunyiming 1:6465a3f5c58a 971 void
sunyiming 1:6465a3f5c58a 972 do_connect(struct api_msg_msg *msg)
sunyiming 1:6465a3f5c58a 973 {
sunyiming 1:6465a3f5c58a 974 if (msg->conn->pcb.tcp == NULL) {
sunyiming 1:6465a3f5c58a 975 /* This may happen when calling netconn_connect() a second time */
sunyiming 1:6465a3f5c58a 976 msg->err = ERR_CLSD;
sunyiming 1:6465a3f5c58a 977 } else {
sunyiming 1:6465a3f5c58a 978 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
sunyiming 1:6465a3f5c58a 979 #if LWIP_RAW
sunyiming 1:6465a3f5c58a 980 case NETCONN_RAW:
sunyiming 1:6465a3f5c58a 981 msg->err = raw_connect(msg->conn->pcb.raw, msg->msg.bc.ipaddr);
sunyiming 1:6465a3f5c58a 982 break;
sunyiming 1:6465a3f5c58a 983 #endif /* LWIP_RAW */
sunyiming 1:6465a3f5c58a 984 #if LWIP_UDP
sunyiming 1:6465a3f5c58a 985 case NETCONN_UDP:
sunyiming 1:6465a3f5c58a 986 msg->err = udp_connect(msg->conn->pcb.udp, msg->msg.bc.ipaddr, msg->msg.bc.port);
sunyiming 1:6465a3f5c58a 987 break;
sunyiming 1:6465a3f5c58a 988 #endif /* LWIP_UDP */
sunyiming 1:6465a3f5c58a 989 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 990 case NETCONN_TCP:
sunyiming 1:6465a3f5c58a 991 /* Prevent connect while doing any other action. */
sunyiming 1:6465a3f5c58a 992 if (msg->conn->state != NETCONN_NONE) {
sunyiming 1:6465a3f5c58a 993 msg->err = ERR_ISCONN;
sunyiming 1:6465a3f5c58a 994 } else {
sunyiming 1:6465a3f5c58a 995 setup_tcp(msg->conn);
sunyiming 1:6465a3f5c58a 996 msg->err = tcp_connect(msg->conn->pcb.tcp, msg->msg.bc.ipaddr,
sunyiming 1:6465a3f5c58a 997 msg->msg.bc.port, do_connected);
sunyiming 1:6465a3f5c58a 998 if (msg->err == ERR_OK) {
sunyiming 1:6465a3f5c58a 999 u8_t non_blocking = netconn_is_nonblocking(msg->conn);
sunyiming 1:6465a3f5c58a 1000 msg->conn->state = NETCONN_CONNECT;
sunyiming 1:6465a3f5c58a 1001 SET_NONBLOCKING_CONNECT(msg->conn, non_blocking);
sunyiming 1:6465a3f5c58a 1002 if (non_blocking) {
sunyiming 1:6465a3f5c58a 1003 msg->err = ERR_INPROGRESS;
sunyiming 1:6465a3f5c58a 1004 } else {
sunyiming 1:6465a3f5c58a 1005 msg->conn->current_msg = msg;
sunyiming 1:6465a3f5c58a 1006 /* sys_sem_signal() is called from do_connected (or err_tcp()),
sunyiming 1:6465a3f5c58a 1007 * when the connection is established! */
sunyiming 1:6465a3f5c58a 1008 return;
sunyiming 1:6465a3f5c58a 1009 }
sunyiming 1:6465a3f5c58a 1010 }
sunyiming 1:6465a3f5c58a 1011 }
sunyiming 1:6465a3f5c58a 1012 break;
sunyiming 1:6465a3f5c58a 1013 #endif /* LWIP_TCP */
sunyiming 1:6465a3f5c58a 1014 default:
sunyiming 1:6465a3f5c58a 1015 LWIP_ERROR("Invalid netconn type", 0, do{ msg->err = ERR_VAL; }while(0));
sunyiming 1:6465a3f5c58a 1016 break;
sunyiming 1:6465a3f5c58a 1017 }
sunyiming 1:6465a3f5c58a 1018 }
sunyiming 1:6465a3f5c58a 1019 sys_sem_signal(&msg->conn->op_completed);
sunyiming 1:6465a3f5c58a 1020 }
sunyiming 1:6465a3f5c58a 1021
sunyiming 1:6465a3f5c58a 1022 /**
sunyiming 1:6465a3f5c58a 1023 * Connect a pcb contained inside a netconn
sunyiming 1:6465a3f5c58a 1024 * Only used for UDP netconns.
sunyiming 1:6465a3f5c58a 1025 * Called from netconn_disconnect.
sunyiming 1:6465a3f5c58a 1026 *
sunyiming 1:6465a3f5c58a 1027 * @param msg the api_msg_msg pointing to the connection to disconnect
sunyiming 1:6465a3f5c58a 1028 */
sunyiming 1:6465a3f5c58a 1029 void
sunyiming 1:6465a3f5c58a 1030 do_disconnect(struct api_msg_msg *msg)
sunyiming 1:6465a3f5c58a 1031 {
sunyiming 1:6465a3f5c58a 1032 #if LWIP_UDP
sunyiming 1:6465a3f5c58a 1033 if (NETCONNTYPE_GROUP(msg->conn->type) == NETCONN_UDP) {
sunyiming 1:6465a3f5c58a 1034 udp_disconnect(msg->conn->pcb.udp);
sunyiming 1:6465a3f5c58a 1035 msg->err = ERR_OK;
sunyiming 1:6465a3f5c58a 1036 } else
sunyiming 1:6465a3f5c58a 1037 #endif /* LWIP_UDP */
sunyiming 1:6465a3f5c58a 1038 {
sunyiming 1:6465a3f5c58a 1039 msg->err = ERR_VAL;
sunyiming 1:6465a3f5c58a 1040 }
sunyiming 1:6465a3f5c58a 1041 TCPIP_APIMSG_ACK(msg);
sunyiming 1:6465a3f5c58a 1042 }
sunyiming 1:6465a3f5c58a 1043
sunyiming 1:6465a3f5c58a 1044 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 1045 /**
sunyiming 1:6465a3f5c58a 1046 * Set a TCP pcb contained in a netconn into listen mode
sunyiming 1:6465a3f5c58a 1047 * Called from netconn_listen.
sunyiming 1:6465a3f5c58a 1048 *
sunyiming 1:6465a3f5c58a 1049 * @param msg the api_msg_msg pointing to the connection
sunyiming 1:6465a3f5c58a 1050 */
sunyiming 1:6465a3f5c58a 1051 void
sunyiming 1:6465a3f5c58a 1052 do_listen(struct api_msg_msg *msg)
sunyiming 1:6465a3f5c58a 1053 {
sunyiming 1:6465a3f5c58a 1054 if (ERR_IS_FATAL(msg->conn->last_err)) {
sunyiming 1:6465a3f5c58a 1055 msg->err = msg->conn->last_err;
sunyiming 1:6465a3f5c58a 1056 } else {
sunyiming 1:6465a3f5c58a 1057 msg->err = ERR_CONN;
sunyiming 1:6465a3f5c58a 1058 if (msg->conn->pcb.tcp != NULL) {
sunyiming 1:6465a3f5c58a 1059 if (msg->conn->type == NETCONN_TCP) {
sunyiming 1:6465a3f5c58a 1060 if (msg->conn->state == NETCONN_NONE) {
sunyiming 1:6465a3f5c58a 1061 #if TCP_LISTEN_BACKLOG
sunyiming 1:6465a3f5c58a 1062 struct tcp_pcb* lpcb = tcp_listen_with_backlog(msg->conn->pcb.tcp, msg->msg.lb.backlog);
sunyiming 1:6465a3f5c58a 1063 #else /* TCP_LISTEN_BACKLOG */
sunyiming 1:6465a3f5c58a 1064 struct tcp_pcb* lpcb = tcp_listen(msg->conn->pcb.tcp);
sunyiming 1:6465a3f5c58a 1065 #endif /* TCP_LISTEN_BACKLOG */
sunyiming 1:6465a3f5c58a 1066 if (lpcb == NULL) {
sunyiming 1:6465a3f5c58a 1067 /* in this case, the old pcb is still allocated */
sunyiming 1:6465a3f5c58a 1068 msg->err = ERR_MEM;
sunyiming 1:6465a3f5c58a 1069 } else {
sunyiming 1:6465a3f5c58a 1070 /* delete the recvmbox and allocate the acceptmbox */
sunyiming 1:6465a3f5c58a 1071 if (sys_mbox_valid(&msg->conn->recvmbox)) {
sunyiming 1:6465a3f5c58a 1072 /** @todo: should we drain the recvmbox here? */
sunyiming 1:6465a3f5c58a 1073 sys_mbox_free(&msg->conn->recvmbox);
sunyiming 1:6465a3f5c58a 1074 sys_mbox_set_invalid(&msg->conn->recvmbox);
sunyiming 1:6465a3f5c58a 1075 }
sunyiming 1:6465a3f5c58a 1076 msg->err = ERR_OK;
sunyiming 1:6465a3f5c58a 1077 if (!sys_mbox_valid(&msg->conn->acceptmbox)) {
sunyiming 1:6465a3f5c58a 1078 msg->err = sys_mbox_new(&msg->conn->acceptmbox, DEFAULT_ACCEPTMBOX_SIZE);
sunyiming 1:6465a3f5c58a 1079 }
sunyiming 1:6465a3f5c58a 1080 if (msg->err == ERR_OK) {
sunyiming 1:6465a3f5c58a 1081 msg->conn->state = NETCONN_LISTEN;
sunyiming 1:6465a3f5c58a 1082 msg->conn->pcb.tcp = lpcb;
sunyiming 1:6465a3f5c58a 1083 tcp_arg(msg->conn->pcb.tcp, msg->conn);
sunyiming 1:6465a3f5c58a 1084 tcp_accept(msg->conn->pcb.tcp, accept_function);
sunyiming 1:6465a3f5c58a 1085 } else {
sunyiming 1:6465a3f5c58a 1086 /* since the old pcb is already deallocated, free lpcb now */
sunyiming 1:6465a3f5c58a 1087 tcp_close(lpcb);
sunyiming 1:6465a3f5c58a 1088 msg->conn->pcb.tcp = NULL;
sunyiming 1:6465a3f5c58a 1089 }
sunyiming 1:6465a3f5c58a 1090 }
sunyiming 1:6465a3f5c58a 1091 }
sunyiming 1:6465a3f5c58a 1092 }
sunyiming 1:6465a3f5c58a 1093 }
sunyiming 1:6465a3f5c58a 1094 }
sunyiming 1:6465a3f5c58a 1095 TCPIP_APIMSG_ACK(msg);
sunyiming 1:6465a3f5c58a 1096 }
sunyiming 1:6465a3f5c58a 1097 #endif /* LWIP_TCP */
sunyiming 1:6465a3f5c58a 1098
sunyiming 1:6465a3f5c58a 1099 /**
sunyiming 1:6465a3f5c58a 1100 * Send some data on a RAW or UDP pcb contained in a netconn
sunyiming 1:6465a3f5c58a 1101 * Called from netconn_send
sunyiming 1:6465a3f5c58a 1102 *
sunyiming 1:6465a3f5c58a 1103 * @param msg the api_msg_msg pointing to the connection
sunyiming 1:6465a3f5c58a 1104 */
sunyiming 1:6465a3f5c58a 1105 void
sunyiming 1:6465a3f5c58a 1106 do_send(struct api_msg_msg *msg)
sunyiming 1:6465a3f5c58a 1107 {
sunyiming 1:6465a3f5c58a 1108 if (ERR_IS_FATAL(msg->conn->last_err)) {
sunyiming 1:6465a3f5c58a 1109 msg->err = msg->conn->last_err;
sunyiming 1:6465a3f5c58a 1110 } else {
sunyiming 1:6465a3f5c58a 1111 msg->err = ERR_CONN;
sunyiming 1:6465a3f5c58a 1112 if (msg->conn->pcb.tcp != NULL) {
sunyiming 1:6465a3f5c58a 1113 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
sunyiming 1:6465a3f5c58a 1114 #if LWIP_RAW
sunyiming 1:6465a3f5c58a 1115 case NETCONN_RAW:
sunyiming 1:6465a3f5c58a 1116 if (ip_addr_isany(&msg->msg.b->addr)) {
sunyiming 1:6465a3f5c58a 1117 msg->err = raw_send(msg->conn->pcb.raw, msg->msg.b->p);
sunyiming 1:6465a3f5c58a 1118 } else {
sunyiming 1:6465a3f5c58a 1119 msg->err = raw_sendto(msg->conn->pcb.raw, msg->msg.b->p, &msg->msg.b->addr);
sunyiming 1:6465a3f5c58a 1120 }
sunyiming 1:6465a3f5c58a 1121 break;
sunyiming 1:6465a3f5c58a 1122 #endif
sunyiming 1:6465a3f5c58a 1123 #if LWIP_UDP
sunyiming 1:6465a3f5c58a 1124 case NETCONN_UDP:
sunyiming 1:6465a3f5c58a 1125 #if LWIP_CHECKSUM_ON_COPY
sunyiming 1:6465a3f5c58a 1126 if (ip_addr_isany(&msg->msg.b->addr)) {
sunyiming 1:6465a3f5c58a 1127 msg->err = udp_send_chksum(msg->conn->pcb.udp, msg->msg.b->p,
sunyiming 1:6465a3f5c58a 1128 msg->msg.b->flags & NETBUF_FLAG_CHKSUM, msg->msg.b->toport_chksum);
sunyiming 1:6465a3f5c58a 1129 } else {
sunyiming 1:6465a3f5c58a 1130 msg->err = udp_sendto_chksum(msg->conn->pcb.udp, msg->msg.b->p,
sunyiming 1:6465a3f5c58a 1131 &msg->msg.b->addr, msg->msg.b->port,
sunyiming 1:6465a3f5c58a 1132 msg->msg.b->flags & NETBUF_FLAG_CHKSUM, msg->msg.b->toport_chksum);
sunyiming 1:6465a3f5c58a 1133 }
sunyiming 1:6465a3f5c58a 1134 #else /* LWIP_CHECKSUM_ON_COPY */
sunyiming 1:6465a3f5c58a 1135 if (ip_addr_isany(&msg->msg.b->addr)) {
sunyiming 1:6465a3f5c58a 1136 msg->err = udp_send(msg->conn->pcb.udp, msg->msg.b->p);
sunyiming 1:6465a3f5c58a 1137 } else {
sunyiming 1:6465a3f5c58a 1138 msg->err = udp_sendto(msg->conn->pcb.udp, msg->msg.b->p, &msg->msg.b->addr, msg->msg.b->port);
sunyiming 1:6465a3f5c58a 1139 }
sunyiming 1:6465a3f5c58a 1140 #endif /* LWIP_CHECKSUM_ON_COPY */
sunyiming 1:6465a3f5c58a 1141 break;
sunyiming 1:6465a3f5c58a 1142 #endif /* LWIP_UDP */
sunyiming 1:6465a3f5c58a 1143 default:
sunyiming 1:6465a3f5c58a 1144 break;
sunyiming 1:6465a3f5c58a 1145 }
sunyiming 1:6465a3f5c58a 1146 }
sunyiming 1:6465a3f5c58a 1147 }
sunyiming 1:6465a3f5c58a 1148 TCPIP_APIMSG_ACK(msg);
sunyiming 1:6465a3f5c58a 1149 }
sunyiming 1:6465a3f5c58a 1150
sunyiming 1:6465a3f5c58a 1151 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 1152 /**
sunyiming 1:6465a3f5c58a 1153 * Indicate data has been received from a TCP pcb contained in a netconn
sunyiming 1:6465a3f5c58a 1154 * Called from netconn_recv
sunyiming 1:6465a3f5c58a 1155 *
sunyiming 1:6465a3f5c58a 1156 * @param msg the api_msg_msg pointing to the connection
sunyiming 1:6465a3f5c58a 1157 */
sunyiming 1:6465a3f5c58a 1158 void
sunyiming 1:6465a3f5c58a 1159 do_recv(struct api_msg_msg *msg)
sunyiming 1:6465a3f5c58a 1160 {
sunyiming 1:6465a3f5c58a 1161 msg->err = ERR_OK;
sunyiming 1:6465a3f5c58a 1162 if (msg->conn->pcb.tcp != NULL) {
sunyiming 1:6465a3f5c58a 1163 if (msg->conn->type == NETCONN_TCP) {
sunyiming 1:6465a3f5c58a 1164 #if TCP_LISTEN_BACKLOG
sunyiming 1:6465a3f5c58a 1165 if (msg->conn->pcb.tcp->state == LISTEN) {
sunyiming 1:6465a3f5c58a 1166 tcp_accepted(msg->conn->pcb.tcp);
sunyiming 1:6465a3f5c58a 1167 } else
sunyiming 1:6465a3f5c58a 1168 #endif /* TCP_LISTEN_BACKLOG */
sunyiming 1:6465a3f5c58a 1169 {
sunyiming 1:6465a3f5c58a 1170 u32_t remaining = msg->msg.r.len;
sunyiming 1:6465a3f5c58a 1171 do {
sunyiming 1:6465a3f5c58a 1172 u16_t recved = (remaining > 0xffff) ? 0xffff : (u16_t)remaining;
sunyiming 1:6465a3f5c58a 1173 tcp_recved(msg->conn->pcb.tcp, recved);
sunyiming 1:6465a3f5c58a 1174 remaining -= recved;
sunyiming 1:6465a3f5c58a 1175 }while(remaining != 0);
sunyiming 1:6465a3f5c58a 1176 }
sunyiming 1:6465a3f5c58a 1177 }
sunyiming 1:6465a3f5c58a 1178 }
sunyiming 1:6465a3f5c58a 1179 TCPIP_APIMSG_ACK(msg);
sunyiming 1:6465a3f5c58a 1180 }
sunyiming 1:6465a3f5c58a 1181
sunyiming 1:6465a3f5c58a 1182 /**
sunyiming 1:6465a3f5c58a 1183 * See if more data needs to be written from a previous call to netconn_write.
sunyiming 1:6465a3f5c58a 1184 * Called initially from do_write. If the first call can't send all data
sunyiming 1:6465a3f5c58a 1185 * (because of low memory or empty send-buffer), this function is called again
sunyiming 1:6465a3f5c58a 1186 * from sent_tcp() or poll_tcp() to send more data. If all data is sent, the
sunyiming 1:6465a3f5c58a 1187 * blocking application thread (waiting in netconn_write) is released.
sunyiming 1:6465a3f5c58a 1188 *
sunyiming 1:6465a3f5c58a 1189 * @param conn netconn (that is currently in state NETCONN_WRITE) to process
sunyiming 1:6465a3f5c58a 1190 * @return ERR_OK
sunyiming 1:6465a3f5c58a 1191 * ERR_MEM if LWIP_TCPIP_CORE_LOCKING=1 and sending hasn't yet finished
sunyiming 1:6465a3f5c58a 1192 */
sunyiming 1:6465a3f5c58a 1193 static err_t
sunyiming 1:6465a3f5c58a 1194 do_writemore(struct netconn *conn)
sunyiming 1:6465a3f5c58a 1195 {
sunyiming 1:6465a3f5c58a 1196 err_t err = ERR_OK;
sunyiming 1:6465a3f5c58a 1197 void *dataptr;
sunyiming 1:6465a3f5c58a 1198 u16_t len, available;
sunyiming 1:6465a3f5c58a 1199 u8_t write_finished = 0;
sunyiming 1:6465a3f5c58a 1200 size_t diff;
sunyiming 1:6465a3f5c58a 1201 u8_t dontblock = netconn_is_nonblocking(conn) ||
sunyiming 1:6465a3f5c58a 1202 (conn->current_msg->msg.w.apiflags & NETCONN_DONTBLOCK);
sunyiming 1:6465a3f5c58a 1203 u8_t apiflags = conn->current_msg->msg.w.apiflags;
sunyiming 1:6465a3f5c58a 1204
sunyiming 1:6465a3f5c58a 1205 LWIP_ASSERT("conn != NULL", conn != NULL);
sunyiming 1:6465a3f5c58a 1206 LWIP_ASSERT("conn->state == NETCONN_WRITE", (conn->state == NETCONN_WRITE));
sunyiming 1:6465a3f5c58a 1207 LWIP_ASSERT("conn->current_msg != NULL", conn->current_msg != NULL);
sunyiming 1:6465a3f5c58a 1208 LWIP_ASSERT("conn->pcb.tcp != NULL", conn->pcb.tcp != NULL);
sunyiming 1:6465a3f5c58a 1209 LWIP_ASSERT("conn->write_offset < conn->current_msg->msg.w.len",
sunyiming 1:6465a3f5c58a 1210 conn->write_offset < conn->current_msg->msg.w.len);
sunyiming 1:6465a3f5c58a 1211
sunyiming 1:6465a3f5c58a 1212 dataptr = (u8_t*)conn->current_msg->msg.w.dataptr + conn->write_offset;
sunyiming 1:6465a3f5c58a 1213 diff = conn->current_msg->msg.w.len - conn->write_offset;
sunyiming 1:6465a3f5c58a 1214 if (diff > 0xffffUL) { /* max_u16_t */
sunyiming 1:6465a3f5c58a 1215 len = 0xffff;
sunyiming 1:6465a3f5c58a 1216 #if LWIP_TCPIP_CORE_LOCKING
sunyiming 1:6465a3f5c58a 1217 conn->flags |= NETCONN_FLAG_WRITE_DELAYED;
sunyiming 1:6465a3f5c58a 1218 #endif
sunyiming 1:6465a3f5c58a 1219 apiflags |= TCP_WRITE_FLAG_MORE;
sunyiming 1:6465a3f5c58a 1220 } else {
sunyiming 1:6465a3f5c58a 1221 len = (u16_t)diff;
sunyiming 1:6465a3f5c58a 1222 }
sunyiming 1:6465a3f5c58a 1223 available = tcp_sndbuf(conn->pcb.tcp);
sunyiming 1:6465a3f5c58a 1224 if (available < len) {
sunyiming 1:6465a3f5c58a 1225 /* don't try to write more than sendbuf */
sunyiming 1:6465a3f5c58a 1226 len = available;
sunyiming 1:6465a3f5c58a 1227 #if LWIP_TCPIP_CORE_LOCKING
sunyiming 1:6465a3f5c58a 1228 conn->flags |= NETCONN_FLAG_WRITE_DELAYED;
sunyiming 1:6465a3f5c58a 1229 #endif
sunyiming 1:6465a3f5c58a 1230 apiflags |= TCP_WRITE_FLAG_MORE;
sunyiming 1:6465a3f5c58a 1231 }
sunyiming 1:6465a3f5c58a 1232 if (dontblock && (len < conn->current_msg->msg.w.len)) {
sunyiming 1:6465a3f5c58a 1233 /* failed to send all data at once -> nonblocking write not possible */
sunyiming 1:6465a3f5c58a 1234 err = ERR_MEM;
sunyiming 1:6465a3f5c58a 1235 }
sunyiming 1:6465a3f5c58a 1236 if (err == ERR_OK) {
sunyiming 1:6465a3f5c58a 1237 LWIP_ASSERT("do_writemore: invalid length!", ((conn->write_offset + len) <= conn->current_msg->msg.w.len));
sunyiming 1:6465a3f5c58a 1238 err = tcp_write(conn->pcb.tcp, dataptr, len, apiflags);
sunyiming 1:6465a3f5c58a 1239 }
sunyiming 1:6465a3f5c58a 1240 if (dontblock && (err == ERR_MEM)) {
sunyiming 1:6465a3f5c58a 1241 /* nonblocking write failed */
sunyiming 1:6465a3f5c58a 1242 write_finished = 1;
sunyiming 1:6465a3f5c58a 1243 err = ERR_WOULDBLOCK;
sunyiming 1:6465a3f5c58a 1244 /* let poll_tcp check writable space to mark the pcb
sunyiming 1:6465a3f5c58a 1245 writable again */
sunyiming 1:6465a3f5c58a 1246 conn->flags |= NETCONN_FLAG_CHECK_WRITESPACE;
sunyiming 1:6465a3f5c58a 1247 /* let select mark this pcb as non-writable. */
sunyiming 1:6465a3f5c58a 1248 API_EVENT(conn, NETCONN_EVT_SENDMINUS, len);
sunyiming 1:6465a3f5c58a 1249 } else {
sunyiming 1:6465a3f5c58a 1250 /* if OK or memory error, check available space */
sunyiming 1:6465a3f5c58a 1251 if (((err == ERR_OK) || (err == ERR_MEM)) &&
sunyiming 1:6465a3f5c58a 1252 ((tcp_sndbuf(conn->pcb.tcp) <= TCP_SNDLOWAT) ||
sunyiming 1:6465a3f5c58a 1253 (tcp_sndqueuelen(conn->pcb.tcp) >= TCP_SNDQUEUELOWAT))) {
sunyiming 1:6465a3f5c58a 1254 /* The queued byte- or pbuf-count exceeds the configured low-water limit,
sunyiming 1:6465a3f5c58a 1255 let select mark this pcb as non-writable. */
sunyiming 1:6465a3f5c58a 1256 API_EVENT(conn, NETCONN_EVT_SENDMINUS, len);
sunyiming 1:6465a3f5c58a 1257 }
sunyiming 1:6465a3f5c58a 1258
sunyiming 1:6465a3f5c58a 1259 if (err == ERR_OK) {
sunyiming 1:6465a3f5c58a 1260 conn->write_offset += len;
sunyiming 1:6465a3f5c58a 1261 if (conn->write_offset == conn->current_msg->msg.w.len) {
sunyiming 1:6465a3f5c58a 1262 /* everything was written */
sunyiming 1:6465a3f5c58a 1263 write_finished = 1;
sunyiming 1:6465a3f5c58a 1264 conn->write_offset = 0;
sunyiming 1:6465a3f5c58a 1265 }
sunyiming 1:6465a3f5c58a 1266 tcp_output(conn->pcb.tcp);
sunyiming 1:6465a3f5c58a 1267 } else if (err == ERR_MEM) {
sunyiming 1:6465a3f5c58a 1268 /* If ERR_MEM, we wait for sent_tcp or poll_tcp to be called
sunyiming 1:6465a3f5c58a 1269 we do NOT return to the application thread, since ERR_MEM is
sunyiming 1:6465a3f5c58a 1270 only a temporary error! */
sunyiming 1:6465a3f5c58a 1271
sunyiming 1:6465a3f5c58a 1272 /* tcp_write returned ERR_MEM, try tcp_output anyway */
sunyiming 1:6465a3f5c58a 1273 tcp_output(conn->pcb.tcp);
sunyiming 1:6465a3f5c58a 1274
sunyiming 1:6465a3f5c58a 1275 #if LWIP_TCPIP_CORE_LOCKING
sunyiming 1:6465a3f5c58a 1276 conn->flags |= NETCONN_FLAG_WRITE_DELAYED;
sunyiming 1:6465a3f5c58a 1277 #endif
sunyiming 1:6465a3f5c58a 1278 } else {
sunyiming 1:6465a3f5c58a 1279 /* On errors != ERR_MEM, we don't try writing any more but return
sunyiming 1:6465a3f5c58a 1280 the error to the application thread. */
sunyiming 1:6465a3f5c58a 1281 write_finished = 1;
sunyiming 1:6465a3f5c58a 1282 }
sunyiming 1:6465a3f5c58a 1283 }
sunyiming 1:6465a3f5c58a 1284
sunyiming 1:6465a3f5c58a 1285 if (write_finished) {
sunyiming 1:6465a3f5c58a 1286 /* everything was written: set back connection state
sunyiming 1:6465a3f5c58a 1287 and back to application task */
sunyiming 1:6465a3f5c58a 1288 conn->current_msg->err = err;
sunyiming 1:6465a3f5c58a 1289 conn->current_msg = NULL;
sunyiming 1:6465a3f5c58a 1290 conn->state = NETCONN_NONE;
sunyiming 1:6465a3f5c58a 1291 #if LWIP_TCPIP_CORE_LOCKING
sunyiming 1:6465a3f5c58a 1292 if ((conn->flags & NETCONN_FLAG_WRITE_DELAYED) != 0)
sunyiming 1:6465a3f5c58a 1293 #endif
sunyiming 1:6465a3f5c58a 1294 {
sunyiming 1:6465a3f5c58a 1295 sys_sem_signal(&conn->op_completed);
sunyiming 1:6465a3f5c58a 1296 }
sunyiming 1:6465a3f5c58a 1297 }
sunyiming 1:6465a3f5c58a 1298 #if LWIP_TCPIP_CORE_LOCKING
sunyiming 1:6465a3f5c58a 1299 else
sunyiming 1:6465a3f5c58a 1300 return ERR_MEM;
sunyiming 1:6465a3f5c58a 1301 #endif
sunyiming 1:6465a3f5c58a 1302 return ERR_OK;
sunyiming 1:6465a3f5c58a 1303 }
sunyiming 1:6465a3f5c58a 1304 #endif /* LWIP_TCP */
sunyiming 1:6465a3f5c58a 1305
sunyiming 1:6465a3f5c58a 1306 /**
sunyiming 1:6465a3f5c58a 1307 * Send some data on a TCP pcb contained in a netconn
sunyiming 1:6465a3f5c58a 1308 * Called from netconn_write
sunyiming 1:6465a3f5c58a 1309 *
sunyiming 1:6465a3f5c58a 1310 * @param msg the api_msg_msg pointing to the connection
sunyiming 1:6465a3f5c58a 1311 */
sunyiming 1:6465a3f5c58a 1312 void
sunyiming 1:6465a3f5c58a 1313 do_write(struct api_msg_msg *msg)
sunyiming 1:6465a3f5c58a 1314 {
sunyiming 1:6465a3f5c58a 1315 if (ERR_IS_FATAL(msg->conn->last_err)) {
sunyiming 1:6465a3f5c58a 1316 msg->err = msg->conn->last_err;
sunyiming 1:6465a3f5c58a 1317 } else {
sunyiming 1:6465a3f5c58a 1318 if (msg->conn->type == NETCONN_TCP) {
sunyiming 1:6465a3f5c58a 1319 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 1320 if (msg->conn->state != NETCONN_NONE) {
sunyiming 1:6465a3f5c58a 1321 /* netconn is connecting, closing or in blocking write */
sunyiming 1:6465a3f5c58a 1322 msg->err = ERR_INPROGRESS;
sunyiming 1:6465a3f5c58a 1323 } else if (msg->conn->pcb.tcp != NULL) {
sunyiming 1:6465a3f5c58a 1324 msg->conn->state = NETCONN_WRITE;
sunyiming 1:6465a3f5c58a 1325 /* set all the variables used by do_writemore */
sunyiming 1:6465a3f5c58a 1326 LWIP_ASSERT("already writing or closing", msg->conn->current_msg == NULL &&
sunyiming 1:6465a3f5c58a 1327 msg->conn->write_offset == 0);
sunyiming 1:6465a3f5c58a 1328 LWIP_ASSERT("msg->msg.w.len != 0", msg->msg.w.len != 0);
sunyiming 1:6465a3f5c58a 1329 msg->conn->current_msg = msg;
sunyiming 1:6465a3f5c58a 1330 msg->conn->write_offset = 0;
sunyiming 1:6465a3f5c58a 1331 #if LWIP_TCPIP_CORE_LOCKING
sunyiming 1:6465a3f5c58a 1332 msg->conn->flags &= ~NETCONN_FLAG_WRITE_DELAYED;
sunyiming 1:6465a3f5c58a 1333 if (do_writemore(msg->conn) != ERR_OK) {
sunyiming 1:6465a3f5c58a 1334 LWIP_ASSERT("state!", msg->conn->state == NETCONN_WRITE);
sunyiming 1:6465a3f5c58a 1335 UNLOCK_TCPIP_CORE();
sunyiming 1:6465a3f5c58a 1336 sys_arch_sem_wait(&msg->conn->op_completed, 0);
sunyiming 1:6465a3f5c58a 1337 LOCK_TCPIP_CORE();
sunyiming 1:6465a3f5c58a 1338 LWIP_ASSERT("state!", msg->conn->state == NETCONN_NONE);
sunyiming 1:6465a3f5c58a 1339 }
sunyiming 1:6465a3f5c58a 1340 #else /* LWIP_TCPIP_CORE_LOCKING */
sunyiming 1:6465a3f5c58a 1341 do_writemore(msg->conn);
sunyiming 1:6465a3f5c58a 1342 #endif /* LWIP_TCPIP_CORE_LOCKING */
sunyiming 1:6465a3f5c58a 1343 /* for both cases: if do_writemore was called, don't ACK the APIMSG
sunyiming 1:6465a3f5c58a 1344 since do_writemore ACKs it! */
sunyiming 1:6465a3f5c58a 1345 return;
sunyiming 1:6465a3f5c58a 1346 } else {
sunyiming 1:6465a3f5c58a 1347 msg->err = ERR_CONN;
sunyiming 1:6465a3f5c58a 1348 }
sunyiming 1:6465a3f5c58a 1349 #else /* LWIP_TCP */
sunyiming 1:6465a3f5c58a 1350 msg->err = ERR_VAL;
sunyiming 1:6465a3f5c58a 1351 #endif /* LWIP_TCP */
sunyiming 1:6465a3f5c58a 1352 #if (LWIP_UDP || LWIP_RAW)
sunyiming 1:6465a3f5c58a 1353 } else {
sunyiming 1:6465a3f5c58a 1354 msg->err = ERR_VAL;
sunyiming 1:6465a3f5c58a 1355 #endif /* (LWIP_UDP || LWIP_RAW) */
sunyiming 1:6465a3f5c58a 1356 }
sunyiming 1:6465a3f5c58a 1357 }
sunyiming 1:6465a3f5c58a 1358 TCPIP_APIMSG_ACK(msg);
sunyiming 1:6465a3f5c58a 1359 }
sunyiming 1:6465a3f5c58a 1360
sunyiming 1:6465a3f5c58a 1361 /**
sunyiming 1:6465a3f5c58a 1362 * Return a connection's local or remote address
sunyiming 1:6465a3f5c58a 1363 * Called from netconn_getaddr
sunyiming 1:6465a3f5c58a 1364 *
sunyiming 1:6465a3f5c58a 1365 * @param msg the api_msg_msg pointing to the connection
sunyiming 1:6465a3f5c58a 1366 */
sunyiming 1:6465a3f5c58a 1367 void
sunyiming 1:6465a3f5c58a 1368 do_getaddr(struct api_msg_msg *msg)
sunyiming 1:6465a3f5c58a 1369 {
sunyiming 1:6465a3f5c58a 1370 if (msg->conn->pcb.ip != NULL) {
sunyiming 1:6465a3f5c58a 1371 *(msg->msg.ad.ipaddr) = (msg->msg.ad.local ? msg->conn->pcb.ip->local_ip :
sunyiming 1:6465a3f5c58a 1372 msg->conn->pcb.ip->remote_ip);
sunyiming 1:6465a3f5c58a 1373
sunyiming 1:6465a3f5c58a 1374 msg->err = ERR_OK;
sunyiming 1:6465a3f5c58a 1375 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
sunyiming 1:6465a3f5c58a 1376 #if LWIP_RAW
sunyiming 1:6465a3f5c58a 1377 case NETCONN_RAW:
sunyiming 1:6465a3f5c58a 1378 if (msg->msg.ad.local) {
sunyiming 1:6465a3f5c58a 1379 *(msg->msg.ad.port) = msg->conn->pcb.raw->protocol;
sunyiming 1:6465a3f5c58a 1380 } else {
sunyiming 1:6465a3f5c58a 1381 /* return an error as connecting is only a helper for upper layers */
sunyiming 1:6465a3f5c58a 1382 msg->err = ERR_CONN;
sunyiming 1:6465a3f5c58a 1383 }
sunyiming 1:6465a3f5c58a 1384 break;
sunyiming 1:6465a3f5c58a 1385 #endif /* LWIP_RAW */
sunyiming 1:6465a3f5c58a 1386 #if LWIP_UDP
sunyiming 1:6465a3f5c58a 1387 case NETCONN_UDP:
sunyiming 1:6465a3f5c58a 1388 if (msg->msg.ad.local) {
sunyiming 1:6465a3f5c58a 1389 *(msg->msg.ad.port) = msg->conn->pcb.udp->local_port;
sunyiming 1:6465a3f5c58a 1390 } else {
sunyiming 1:6465a3f5c58a 1391 if ((msg->conn->pcb.udp->flags & UDP_FLAGS_CONNECTED) == 0) {
sunyiming 1:6465a3f5c58a 1392 msg->err = ERR_CONN;
sunyiming 1:6465a3f5c58a 1393 } else {
sunyiming 1:6465a3f5c58a 1394 *(msg->msg.ad.port) = msg->conn->pcb.udp->remote_port;
sunyiming 1:6465a3f5c58a 1395 }
sunyiming 1:6465a3f5c58a 1396 }
sunyiming 1:6465a3f5c58a 1397 break;
sunyiming 1:6465a3f5c58a 1398 #endif /* LWIP_UDP */
sunyiming 1:6465a3f5c58a 1399 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 1400 case NETCONN_TCP:
sunyiming 1:6465a3f5c58a 1401 *(msg->msg.ad.port) = (msg->msg.ad.local?msg->conn->pcb.tcp->local_port:msg->conn->pcb.tcp->remote_port);
sunyiming 1:6465a3f5c58a 1402 break;
sunyiming 1:6465a3f5c58a 1403 #endif /* LWIP_TCP */
sunyiming 1:6465a3f5c58a 1404 default:
sunyiming 1:6465a3f5c58a 1405 LWIP_ASSERT("invalid netconn_type", 0);
sunyiming 1:6465a3f5c58a 1406 break;
sunyiming 1:6465a3f5c58a 1407 }
sunyiming 1:6465a3f5c58a 1408 } else {
sunyiming 1:6465a3f5c58a 1409 msg->err = ERR_CONN;
sunyiming 1:6465a3f5c58a 1410 }
sunyiming 1:6465a3f5c58a 1411 TCPIP_APIMSG_ACK(msg);
sunyiming 1:6465a3f5c58a 1412 }
sunyiming 1:6465a3f5c58a 1413
sunyiming 1:6465a3f5c58a 1414 /**
sunyiming 1:6465a3f5c58a 1415 * Close a TCP pcb contained in a netconn
sunyiming 1:6465a3f5c58a 1416 * Called from netconn_close
sunyiming 1:6465a3f5c58a 1417 *
sunyiming 1:6465a3f5c58a 1418 * @param msg the api_msg_msg pointing to the connection
sunyiming 1:6465a3f5c58a 1419 */
sunyiming 1:6465a3f5c58a 1420 void
sunyiming 1:6465a3f5c58a 1421 do_close(struct api_msg_msg *msg)
sunyiming 1:6465a3f5c58a 1422 {
sunyiming 1:6465a3f5c58a 1423 #if LWIP_TCP
sunyiming 1:6465a3f5c58a 1424 /* @todo: abort running write/connect? */
sunyiming 1:6465a3f5c58a 1425 if ((msg->conn->state != NETCONN_NONE) && (msg->conn->state != NETCONN_LISTEN)) {
sunyiming 1:6465a3f5c58a 1426 /* this only happens for TCP netconns */
sunyiming 1:6465a3f5c58a 1427 LWIP_ASSERT("msg->conn->type == NETCONN_TCP", msg->conn->type == NETCONN_TCP);
sunyiming 1:6465a3f5c58a 1428 msg->err = ERR_INPROGRESS;
sunyiming 1:6465a3f5c58a 1429 } else if ((msg->conn->pcb.tcp != NULL) && (msg->conn->type == NETCONN_TCP)) {
sunyiming 1:6465a3f5c58a 1430 if ((msg->msg.sd.shut != NETCONN_SHUT_RDWR) && (msg->conn->state == NETCONN_LISTEN)) {
sunyiming 1:6465a3f5c58a 1431 /* LISTEN doesn't support half shutdown */
sunyiming 1:6465a3f5c58a 1432 msg->err = ERR_CONN;
sunyiming 1:6465a3f5c58a 1433 } else {
sunyiming 1:6465a3f5c58a 1434 if (msg->msg.sd.shut & NETCONN_SHUT_RD) {
sunyiming 1:6465a3f5c58a 1435 /* Drain and delete mboxes */
sunyiming 1:6465a3f5c58a 1436 netconn_drain(msg->conn);
sunyiming 1:6465a3f5c58a 1437 }
sunyiming 1:6465a3f5c58a 1438 LWIP_ASSERT("already writing or closing", msg->conn->current_msg == NULL &&
sunyiming 1:6465a3f5c58a 1439 msg->conn->write_offset == 0);
sunyiming 1:6465a3f5c58a 1440 msg->conn->state = NETCONN_CLOSE;
sunyiming 1:6465a3f5c58a 1441 msg->conn->current_msg = msg;
sunyiming 1:6465a3f5c58a 1442 do_close_internal(msg->conn);
sunyiming 1:6465a3f5c58a 1443 /* for tcp netconns, do_close_internal ACKs the message */
sunyiming 1:6465a3f5c58a 1444 return;
sunyiming 1:6465a3f5c58a 1445 }
sunyiming 1:6465a3f5c58a 1446 } else
sunyiming 1:6465a3f5c58a 1447 #endif /* LWIP_TCP */
sunyiming 1:6465a3f5c58a 1448 {
sunyiming 1:6465a3f5c58a 1449 msg->err = ERR_VAL;
sunyiming 1:6465a3f5c58a 1450 }
sunyiming 1:6465a3f5c58a 1451 sys_sem_signal(&msg->conn->op_completed);
sunyiming 1:6465a3f5c58a 1452 }
sunyiming 1:6465a3f5c58a 1453
sunyiming 1:6465a3f5c58a 1454 #if LWIP_IGMP
sunyiming 1:6465a3f5c58a 1455 /**
sunyiming 1:6465a3f5c58a 1456 * Join multicast groups for UDP netconns.
sunyiming 1:6465a3f5c58a 1457 * Called from netconn_join_leave_group
sunyiming 1:6465a3f5c58a 1458 *
sunyiming 1:6465a3f5c58a 1459 * @param msg the api_msg_msg pointing to the connection
sunyiming 1:6465a3f5c58a 1460 */
sunyiming 1:6465a3f5c58a 1461 void
sunyiming 1:6465a3f5c58a 1462 do_join_leave_group(struct api_msg_msg *msg)
sunyiming 1:6465a3f5c58a 1463 {
sunyiming 1:6465a3f5c58a 1464 if (ERR_IS_FATAL(msg->conn->last_err)) {
sunyiming 1:6465a3f5c58a 1465 msg->err = msg->conn->last_err;
sunyiming 1:6465a3f5c58a 1466 } else {
sunyiming 1:6465a3f5c58a 1467 if (msg->conn->pcb.tcp != NULL) {
sunyiming 1:6465a3f5c58a 1468 if (NETCONNTYPE_GROUP(msg->conn->type) == NETCONN_UDP) {
sunyiming 1:6465a3f5c58a 1469 #if LWIP_UDP
sunyiming 1:6465a3f5c58a 1470 if (msg->msg.jl.join_or_leave == NETCONN_JOIN) {
sunyiming 1:6465a3f5c58a 1471 msg->err = igmp_joingroup(msg->msg.jl.netif_addr, msg->msg.jl.multiaddr);
sunyiming 1:6465a3f5c58a 1472 } else {
sunyiming 1:6465a3f5c58a 1473 msg->err = igmp_leavegroup(msg->msg.jl.netif_addr, msg->msg.jl.multiaddr);
sunyiming 1:6465a3f5c58a 1474 }
sunyiming 1:6465a3f5c58a 1475 #endif /* LWIP_UDP */
sunyiming 1:6465a3f5c58a 1476 #if (LWIP_TCP || LWIP_RAW)
sunyiming 1:6465a3f5c58a 1477 } else {
sunyiming 1:6465a3f5c58a 1478 msg->err = ERR_VAL;
sunyiming 1:6465a3f5c58a 1479 #endif /* (LWIP_TCP || LWIP_RAW) */
sunyiming 1:6465a3f5c58a 1480 }
sunyiming 1:6465a3f5c58a 1481 } else {
sunyiming 1:6465a3f5c58a 1482 msg->err = ERR_CONN;
sunyiming 1:6465a3f5c58a 1483 }
sunyiming 1:6465a3f5c58a 1484 }
sunyiming 1:6465a3f5c58a 1485 TCPIP_APIMSG_ACK(msg);
sunyiming 1:6465a3f5c58a 1486 }
sunyiming 1:6465a3f5c58a 1487 #endif /* LWIP_IGMP */
sunyiming 1:6465a3f5c58a 1488
sunyiming 1:6465a3f5c58a 1489 #if LWIP_DNS
sunyiming 1:6465a3f5c58a 1490 /**
sunyiming 1:6465a3f5c58a 1491 * Callback function that is called when DNS name is resolved
sunyiming 1:6465a3f5c58a 1492 * (or on timeout). A waiting application thread is waked up by
sunyiming 1:6465a3f5c58a 1493 * signaling the semaphore.
sunyiming 1:6465a3f5c58a 1494 */
sunyiming 1:6465a3f5c58a 1495 static void
sunyiming 1:6465a3f5c58a 1496 do_dns_found(const char *name, ip_addr_t *ipaddr, void *arg)
sunyiming 1:6465a3f5c58a 1497 {
sunyiming 1:6465a3f5c58a 1498 struct dns_api_msg *msg = (struct dns_api_msg*)arg;
sunyiming 1:6465a3f5c58a 1499
sunyiming 1:6465a3f5c58a 1500 LWIP_ASSERT("DNS response for wrong host name", strcmp(msg->name, name) == 0);
sunyiming 1:6465a3f5c58a 1501 LWIP_UNUSED_ARG(name);
sunyiming 1:6465a3f5c58a 1502
sunyiming 1:6465a3f5c58a 1503 if (ipaddr == NULL) {
sunyiming 1:6465a3f5c58a 1504 /* timeout or memory error */
sunyiming 1:6465a3f5c58a 1505 *msg->err = ERR_VAL;
sunyiming 1:6465a3f5c58a 1506 } else {
sunyiming 1:6465a3f5c58a 1507 /* address was resolved */
sunyiming 1:6465a3f5c58a 1508 *msg->err = ERR_OK;
sunyiming 1:6465a3f5c58a 1509 *msg->addr = *ipaddr;
sunyiming 1:6465a3f5c58a 1510 }
sunyiming 1:6465a3f5c58a 1511 /* wake up the application task waiting in netconn_gethostbyname */
sunyiming 1:6465a3f5c58a 1512 sys_sem_signal(msg->sem);
sunyiming 1:6465a3f5c58a 1513 }
sunyiming 1:6465a3f5c58a 1514
sunyiming 1:6465a3f5c58a 1515 /**
sunyiming 1:6465a3f5c58a 1516 * Execute a DNS query
sunyiming 1:6465a3f5c58a 1517 * Called from netconn_gethostbyname
sunyiming 1:6465a3f5c58a 1518 *
sunyiming 1:6465a3f5c58a 1519 * @param arg the dns_api_msg pointing to the query
sunyiming 1:6465a3f5c58a 1520 */
sunyiming 1:6465a3f5c58a 1521 void
sunyiming 1:6465a3f5c58a 1522 do_gethostbyname(void *arg)
sunyiming 1:6465a3f5c58a 1523 {
sunyiming 1:6465a3f5c58a 1524 struct dns_api_msg *msg = (struct dns_api_msg*)arg;
sunyiming 1:6465a3f5c58a 1525
sunyiming 1:6465a3f5c58a 1526 *msg->err = dns_gethostbyname(msg->name, msg->addr, do_dns_found, msg);
sunyiming 1:6465a3f5c58a 1527 if (*msg->err != ERR_INPROGRESS) {
sunyiming 1:6465a3f5c58a 1528 /* on error or immediate success, wake up the application
sunyiming 1:6465a3f5c58a 1529 * task waiting in netconn_gethostbyname */
sunyiming 1:6465a3f5c58a 1530 sys_sem_signal(msg->sem);
sunyiming 1:6465a3f5c58a 1531 }
sunyiming 1:6465a3f5c58a 1532 }
sunyiming 1:6465a3f5c58a 1533 #endif /* LWIP_DNS */
sunyiming 1:6465a3f5c58a 1534
sunyiming 1:6465a3f5c58a 1535 #endif /* LWIP_NETCONN */