CK Sin / Mbed 2 deprecated Ethernetwebsocket

Ethernetwebsoc

Dependencies:   C12832_lcd LM75B WebSocketClient mbed-rtos mbed Socket lwip-eth lwip-sys lwip

EthernetInterface/lwip/api/api_msg.c@0:0ed2a7c7190c, 2013-05-31 (annotated)

Committer:
GordonSin
Date:
Fri May 31 04:09:54 2013 +0000
Revision:
0:0ed2a7c7190c
31/5/2013;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
GordonSin 0:0ed2a7c7190c 1 /**
GordonSin 0:0ed2a7c7190c 2 * @file
GordonSin 0:0ed2a7c7190c 3 * Sequential API Internal module
GordonSin 0:0ed2a7c7190c 4 *
GordonSin 0:0ed2a7c7190c 5 */
GordonSin 0:0ed2a7c7190c 6
GordonSin 0:0ed2a7c7190c 7 /*
GordonSin 0:0ed2a7c7190c 8 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
GordonSin 0:0ed2a7c7190c 9 * All rights reserved.
GordonSin 0:0ed2a7c7190c 10 *
GordonSin 0:0ed2a7c7190c 11 * Redistribution and use in source and binary forms, with or without modification,
GordonSin 0:0ed2a7c7190c 12 * are permitted provided that the following conditions are met:
GordonSin 0:0ed2a7c7190c 13 *
GordonSin 0:0ed2a7c7190c 14 * 1. Redistributions of source code must retain the above copyright notice,
GordonSin 0:0ed2a7c7190c 15 * this list of conditions and the following disclaimer.
GordonSin 0:0ed2a7c7190c 16 * 2. Redistributions in binary form must reproduce the above copyright notice,
GordonSin 0:0ed2a7c7190c 17 * this list of conditions and the following disclaimer in the documentation
GordonSin 0:0ed2a7c7190c 18 * and/or other materials provided with the distribution.
GordonSin 0:0ed2a7c7190c 19 * 3. The name of the author may not be used to endorse or promote products
GordonSin 0:0ed2a7c7190c 20 * derived from this software without specific prior written permission.
GordonSin 0:0ed2a7c7190c 21 *
GordonSin 0:0ed2a7c7190c 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
GordonSin 0:0ed2a7c7190c 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
GordonSin 0:0ed2a7c7190c 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
GordonSin 0:0ed2a7c7190c 25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
GordonSin 0:0ed2a7c7190c 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
GordonSin 0:0ed2a7c7190c 27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
GordonSin 0:0ed2a7c7190c 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
GordonSin 0:0ed2a7c7190c 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
GordonSin 0:0ed2a7c7190c 30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
GordonSin 0:0ed2a7c7190c 31 * OF SUCH DAMAGE.
GordonSin 0:0ed2a7c7190c 32 *
GordonSin 0:0ed2a7c7190c 33 * This file is part of the lwIP TCP/IP stack.
GordonSin 0:0ed2a7c7190c 34 *
GordonSin 0:0ed2a7c7190c 35 * Author: Adam Dunkels <adam@sics.se>
GordonSin 0:0ed2a7c7190c 36 *
GordonSin 0:0ed2a7c7190c 37 */
GordonSin 0:0ed2a7c7190c 38
GordonSin 0:0ed2a7c7190c 39 #include "lwip/opt.h"
GordonSin 0:0ed2a7c7190c 40
GordonSin 0:0ed2a7c7190c 41 #if LWIP_NETCONN /* don't build if not configured for use in lwipopts.h */
GordonSin 0:0ed2a7c7190c 42
GordonSin 0:0ed2a7c7190c 43 #include "lwip/api_msg.h"
GordonSin 0:0ed2a7c7190c 44
GordonSin 0:0ed2a7c7190c 45 #include "lwip/ip.h"
GordonSin 0:0ed2a7c7190c 46 #include "lwip/udp.h"
GordonSin 0:0ed2a7c7190c 47 #include "lwip/tcp.h"
GordonSin 0:0ed2a7c7190c 48 #include "lwip/raw.h"
GordonSin 0:0ed2a7c7190c 49
GordonSin 0:0ed2a7c7190c 50 #include "lwip/memp.h"
GordonSin 0:0ed2a7c7190c 51 #include "lwip/tcpip.h"
GordonSin 0:0ed2a7c7190c 52 #include "lwip/igmp.h"
GordonSin 0:0ed2a7c7190c 53 #include "lwip/dns.h"
GordonSin 0:0ed2a7c7190c 54
GordonSin 0:0ed2a7c7190c 55 #include <string.h>
GordonSin 0:0ed2a7c7190c 56
GordonSin 0:0ed2a7c7190c 57 #define SET_NONBLOCKING_CONNECT(conn, val) do { if(val) { \
GordonSin 0:0ed2a7c7190c 58 (conn)->flags |= NETCONN_FLAG_IN_NONBLOCKING_CONNECT; \
GordonSin 0:0ed2a7c7190c 59 } else { \
GordonSin 0:0ed2a7c7190c 60 (conn)->flags &= ~ NETCONN_FLAG_IN_NONBLOCKING_CONNECT; }} while(0)
GordonSin 0:0ed2a7c7190c 61 #define IN_NONBLOCKING_CONNECT(conn) (((conn)->flags & NETCONN_FLAG_IN_NONBLOCKING_CONNECT) != 0)
GordonSin 0:0ed2a7c7190c 62
GordonSin 0:0ed2a7c7190c 63 /* forward declarations */
GordonSin 0:0ed2a7c7190c 64 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 65 static err_t do_writemore(struct netconn *conn);
GordonSin 0:0ed2a7c7190c 66 static void do_close_internal(struct netconn *conn);
GordonSin 0:0ed2a7c7190c 67 #endif
GordonSin 0:0ed2a7c7190c 68
GordonSin 0:0ed2a7c7190c 69 #if LWIP_RAW
GordonSin 0:0ed2a7c7190c 70 /**
GordonSin 0:0ed2a7c7190c 71 * Receive callback function for RAW netconns.
GordonSin 0:0ed2a7c7190c 72 * Doesn't 'eat' the packet, only references it and sends it to
GordonSin 0:0ed2a7c7190c 73 * conn->recvmbox
GordonSin 0:0ed2a7c7190c 74 *
GordonSin 0:0ed2a7c7190c 75 * @see raw.h (struct raw_pcb.recv) for parameters and return value
GordonSin 0:0ed2a7c7190c 76 */
GordonSin 0:0ed2a7c7190c 77 static u8_t
GordonSin 0:0ed2a7c7190c 78 recv_raw(void *arg, struct raw_pcb *pcb, struct pbuf *p,
GordonSin 0:0ed2a7c7190c 79 ip_addr_t *addr)
GordonSin 0:0ed2a7c7190c 80 {
GordonSin 0:0ed2a7c7190c 81 struct pbuf *q;
GordonSin 0:0ed2a7c7190c 82 struct netbuf *buf;
GordonSin 0:0ed2a7c7190c 83 struct netconn *conn;
GordonSin 0:0ed2a7c7190c 84
GordonSin 0:0ed2a7c7190c 85 LWIP_UNUSED_ARG(addr);
GordonSin 0:0ed2a7c7190c 86 conn = (struct netconn *)arg;
GordonSin 0:0ed2a7c7190c 87
GordonSin 0:0ed2a7c7190c 88 if ((conn != NULL) && sys_mbox_valid(&conn->recvmbox)) {
GordonSin 0:0ed2a7c7190c 89 #if LWIP_SO_RCVBUF
GordonSin 0:0ed2a7c7190c 90 int recv_avail;
GordonSin 0:0ed2a7c7190c 91 SYS_ARCH_GET(conn->recv_avail, recv_avail);
GordonSin 0:0ed2a7c7190c 92 if ((recv_avail + (int)(p->tot_len)) > conn->recv_bufsize) {
GordonSin 0:0ed2a7c7190c 93 return 0;
GordonSin 0:0ed2a7c7190c 94 }
GordonSin 0:0ed2a7c7190c 95 #endif /* LWIP_SO_RCVBUF */
GordonSin 0:0ed2a7c7190c 96 /* copy the whole packet into new pbufs */
GordonSin 0:0ed2a7c7190c 97 q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
GordonSin 0:0ed2a7c7190c 98 if(q != NULL) {
GordonSin 0:0ed2a7c7190c 99 if (pbuf_copy(q, p) != ERR_OK) {
GordonSin 0:0ed2a7c7190c 100 pbuf_free(q);
GordonSin 0:0ed2a7c7190c 101 q = NULL;
GordonSin 0:0ed2a7c7190c 102 }
GordonSin 0:0ed2a7c7190c 103 }
GordonSin 0:0ed2a7c7190c 104
GordonSin 0:0ed2a7c7190c 105 if (q != NULL) {
GordonSin 0:0ed2a7c7190c 106 u16_t len;
GordonSin 0:0ed2a7c7190c 107 buf = (struct netbuf *)memp_malloc(MEMP_NETBUF);
GordonSin 0:0ed2a7c7190c 108 if (buf == NULL) {
GordonSin 0:0ed2a7c7190c 109 pbuf_free(q);
GordonSin 0:0ed2a7c7190c 110 return 0;
GordonSin 0:0ed2a7c7190c 111 }
GordonSin 0:0ed2a7c7190c 112
GordonSin 0:0ed2a7c7190c 113 buf->p = q;
GordonSin 0:0ed2a7c7190c 114 buf->ptr = q;
GordonSin 0:0ed2a7c7190c 115 ip_addr_copy(buf->addr, *ip_current_src_addr());
GordonSin 0:0ed2a7c7190c 116 buf->port = pcb->protocol;
GordonSin 0:0ed2a7c7190c 117
GordonSin 0:0ed2a7c7190c 118 len = q->tot_len;
GordonSin 0:0ed2a7c7190c 119 if (sys_mbox_trypost(&conn->recvmbox, buf) != ERR_OK) {
GordonSin 0:0ed2a7c7190c 120 netbuf_delete(buf);
GordonSin 0:0ed2a7c7190c 121 return 0;
GordonSin 0:0ed2a7c7190c 122 } else {
GordonSin 0:0ed2a7c7190c 123 #if LWIP_SO_RCVBUF
GordonSin 0:0ed2a7c7190c 124 SYS_ARCH_INC(conn->recv_avail, len);
GordonSin 0:0ed2a7c7190c 125 #endif /* LWIP_SO_RCVBUF */
GordonSin 0:0ed2a7c7190c 126 /* Register event with callback */
GordonSin 0:0ed2a7c7190c 127 API_EVENT(conn, NETCONN_EVT_RCVPLUS, len);
GordonSin 0:0ed2a7c7190c 128 }
GordonSin 0:0ed2a7c7190c 129 }
GordonSin 0:0ed2a7c7190c 130 }
GordonSin 0:0ed2a7c7190c 131
GordonSin 0:0ed2a7c7190c 132 return 0; /* do not eat the packet */
GordonSin 0:0ed2a7c7190c 133 }
GordonSin 0:0ed2a7c7190c 134 #endif /* LWIP_RAW*/
GordonSin 0:0ed2a7c7190c 135
GordonSin 0:0ed2a7c7190c 136 #if LWIP_UDP
GordonSin 0:0ed2a7c7190c 137 /**
GordonSin 0:0ed2a7c7190c 138 * Receive callback function for UDP netconns.
GordonSin 0:0ed2a7c7190c 139 * Posts the packet to conn->recvmbox or deletes it on memory error.
GordonSin 0:0ed2a7c7190c 140 *
GordonSin 0:0ed2a7c7190c 141 * @see udp.h (struct udp_pcb.recv) for parameters
GordonSin 0:0ed2a7c7190c 142 */
GordonSin 0:0ed2a7c7190c 143 static void
GordonSin 0:0ed2a7c7190c 144 recv_udp(void *arg, struct udp_pcb *pcb, struct pbuf *p,
GordonSin 0:0ed2a7c7190c 145 ip_addr_t *addr, u16_t port)
GordonSin 0:0ed2a7c7190c 146 {
GordonSin 0:0ed2a7c7190c 147 struct netbuf *buf;
GordonSin 0:0ed2a7c7190c 148 struct netconn *conn;
GordonSin 0:0ed2a7c7190c 149 u16_t len;
GordonSin 0:0ed2a7c7190c 150 #if LWIP_SO_RCVBUF
GordonSin 0:0ed2a7c7190c 151 int recv_avail;
GordonSin 0:0ed2a7c7190c 152 #endif /* LWIP_SO_RCVBUF */
GordonSin 0:0ed2a7c7190c 153
GordonSin 0:0ed2a7c7190c 154 LWIP_UNUSED_ARG(pcb); /* only used for asserts... */
GordonSin 0:0ed2a7c7190c 155 LWIP_ASSERT("recv_udp must have a pcb argument", pcb != NULL);
GordonSin 0:0ed2a7c7190c 156 LWIP_ASSERT("recv_udp must have an argument", arg != NULL);
GordonSin 0:0ed2a7c7190c 157 conn = (struct netconn *)arg;
GordonSin 0:0ed2a7c7190c 158 LWIP_ASSERT("recv_udp: recv for wrong pcb!", conn->pcb.udp == pcb);
GordonSin 0:0ed2a7c7190c 159
GordonSin 0:0ed2a7c7190c 160 #if LWIP_SO_RCVBUF
GordonSin 0:0ed2a7c7190c 161 SYS_ARCH_GET(conn->recv_avail, recv_avail);
GordonSin 0:0ed2a7c7190c 162 if ((conn == NULL) || !sys_mbox_valid(&conn->recvmbox) ||
GordonSin 0:0ed2a7c7190c 163 ((recv_avail + (int)(p->tot_len)) > conn->recv_bufsize)) {
GordonSin 0:0ed2a7c7190c 164 #else /* LWIP_SO_RCVBUF */
GordonSin 0:0ed2a7c7190c 165 if ((conn == NULL) || !sys_mbox_valid(&conn->recvmbox)) {
GordonSin 0:0ed2a7c7190c 166 #endif /* LWIP_SO_RCVBUF */
GordonSin 0:0ed2a7c7190c 167 pbuf_free(p);
GordonSin 0:0ed2a7c7190c 168 return;
GordonSin 0:0ed2a7c7190c 169 }
GordonSin 0:0ed2a7c7190c 170
GordonSin 0:0ed2a7c7190c 171 buf = (struct netbuf *)memp_malloc(MEMP_NETBUF);
GordonSin 0:0ed2a7c7190c 172 if (buf == NULL) {
GordonSin 0:0ed2a7c7190c 173 pbuf_free(p);
GordonSin 0:0ed2a7c7190c 174 return;
GordonSin 0:0ed2a7c7190c 175 } else {
GordonSin 0:0ed2a7c7190c 176 buf->p = p;
GordonSin 0:0ed2a7c7190c 177 buf->ptr = p;
GordonSin 0:0ed2a7c7190c 178 ip_addr_set(&buf->addr, addr);
GordonSin 0:0ed2a7c7190c 179 buf->port = port;
GordonSin 0:0ed2a7c7190c 180 #if LWIP_NETBUF_RECVINFO
GordonSin 0:0ed2a7c7190c 181 {
GordonSin 0:0ed2a7c7190c 182 const struct ip_hdr* iphdr = ip_current_header();
GordonSin 0:0ed2a7c7190c 183 /* get the UDP header - always in the first pbuf, ensured by udp_input */
GordonSin 0:0ed2a7c7190c 184 const struct udp_hdr* udphdr = (void*)(((char*)iphdr) + IPH_LEN(iphdr));
GordonSin 0:0ed2a7c7190c 185 #if LWIP_CHECKSUM_ON_COPY
GordonSin 0:0ed2a7c7190c 186 buf->flags = NETBUF_FLAG_DESTADDR;
GordonSin 0:0ed2a7c7190c 187 #endif /* LWIP_CHECKSUM_ON_COPY */
GordonSin 0:0ed2a7c7190c 188 ip_addr_set(&buf->toaddr, ip_current_dest_addr());
GordonSin 0:0ed2a7c7190c 189 buf->toport_chksum = udphdr->dest;
GordonSin 0:0ed2a7c7190c 190 }
GordonSin 0:0ed2a7c7190c 191 #endif /* LWIP_NETBUF_RECVINFO */
GordonSin 0:0ed2a7c7190c 192 }
GordonSin 0:0ed2a7c7190c 193
GordonSin 0:0ed2a7c7190c 194 len = p->tot_len;
GordonSin 0:0ed2a7c7190c 195 if (sys_mbox_trypost(&conn->recvmbox, buf) != ERR_OK) {
GordonSin 0:0ed2a7c7190c 196 netbuf_delete(buf);
GordonSin 0:0ed2a7c7190c 197 return;
GordonSin 0:0ed2a7c7190c 198 } else {
GordonSin 0:0ed2a7c7190c 199 #if LWIP_SO_RCVBUF
GordonSin 0:0ed2a7c7190c 200 SYS_ARCH_INC(conn->recv_avail, len);
GordonSin 0:0ed2a7c7190c 201 #endif /* LWIP_SO_RCVBUF */
GordonSin 0:0ed2a7c7190c 202 /* Register event with callback */
GordonSin 0:0ed2a7c7190c 203 API_EVENT(conn, NETCONN_EVT_RCVPLUS, len);
GordonSin 0:0ed2a7c7190c 204 }
GordonSin 0:0ed2a7c7190c 205 }
GordonSin 0:0ed2a7c7190c 206 #endif /* LWIP_UDP */
GordonSin 0:0ed2a7c7190c 207
GordonSin 0:0ed2a7c7190c 208 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 209 /**
GordonSin 0:0ed2a7c7190c 210 * Receive callback function for TCP netconns.
GordonSin 0:0ed2a7c7190c 211 * Posts the packet to conn->recvmbox, but doesn't delete it on errors.
GordonSin 0:0ed2a7c7190c 212 *
GordonSin 0:0ed2a7c7190c 213 * @see tcp.h (struct tcp_pcb.recv) for parameters and return value
GordonSin 0:0ed2a7c7190c 214 */
GordonSin 0:0ed2a7c7190c 215 static err_t
GordonSin 0:0ed2a7c7190c 216 recv_tcp(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err)
GordonSin 0:0ed2a7c7190c 217 {
GordonSin 0:0ed2a7c7190c 218 struct netconn *conn;
GordonSin 0:0ed2a7c7190c 219 u16_t len;
GordonSin 0:0ed2a7c7190c 220
GordonSin 0:0ed2a7c7190c 221 LWIP_UNUSED_ARG(pcb);
GordonSin 0:0ed2a7c7190c 222 LWIP_ASSERT("recv_tcp must have a pcb argument", pcb != NULL);
GordonSin 0:0ed2a7c7190c 223 LWIP_ASSERT("recv_tcp must have an argument", arg != NULL);
GordonSin 0:0ed2a7c7190c 224 conn = (struct netconn *)arg;
GordonSin 0:0ed2a7c7190c 225 LWIP_ASSERT("recv_tcp: recv for wrong pcb!", conn->pcb.tcp == pcb);
GordonSin 0:0ed2a7c7190c 226
GordonSin 0:0ed2a7c7190c 227 if (conn == NULL) {
GordonSin 0:0ed2a7c7190c 228 return ERR_VAL;
GordonSin 0:0ed2a7c7190c 229 }
GordonSin 0:0ed2a7c7190c 230 if (!sys_mbox_valid(&conn->recvmbox)) {
GordonSin 0:0ed2a7c7190c 231 /* recvmbox already deleted */
GordonSin 0:0ed2a7c7190c 232 if (p != NULL) {
GordonSin 0:0ed2a7c7190c 233 tcp_recved(pcb, p->tot_len);
GordonSin 0:0ed2a7c7190c 234 pbuf_free(p);
GordonSin 0:0ed2a7c7190c 235 }
GordonSin 0:0ed2a7c7190c 236 return ERR_OK;
GordonSin 0:0ed2a7c7190c 237 }
GordonSin 0:0ed2a7c7190c 238 /* Unlike for UDP or RAW pcbs, don't check for available space
GordonSin 0:0ed2a7c7190c 239 using recv_avail since that could break the connection
GordonSin 0:0ed2a7c7190c 240 (data is already ACKed) */
GordonSin 0:0ed2a7c7190c 241
GordonSin 0:0ed2a7c7190c 242 /* don't overwrite fatal errors! */
GordonSin 0:0ed2a7c7190c 243 NETCONN_SET_SAFE_ERR(conn, err);
GordonSin 0:0ed2a7c7190c 244
GordonSin 0:0ed2a7c7190c 245 if (p != NULL) {
GordonSin 0:0ed2a7c7190c 246 len = p->tot_len;
GordonSin 0:0ed2a7c7190c 247 } else {
GordonSin 0:0ed2a7c7190c 248 len = 0;
GordonSin 0:0ed2a7c7190c 249 }
GordonSin 0:0ed2a7c7190c 250
GordonSin 0:0ed2a7c7190c 251 if (sys_mbox_trypost(&conn->recvmbox, p) != ERR_OK) {
GordonSin 0:0ed2a7c7190c 252 /* don't deallocate p: it is presented to us later again from tcp_fasttmr! */
GordonSin 0:0ed2a7c7190c 253 return ERR_MEM;
GordonSin 0:0ed2a7c7190c 254 } else {
GordonSin 0:0ed2a7c7190c 255 #if LWIP_SO_RCVBUF
GordonSin 0:0ed2a7c7190c 256 SYS_ARCH_INC(conn->recv_avail, len);
GordonSin 0:0ed2a7c7190c 257 #endif /* LWIP_SO_RCVBUF */
GordonSin 0:0ed2a7c7190c 258 /* Register event with callback */
GordonSin 0:0ed2a7c7190c 259 API_EVENT(conn, NETCONN_EVT_RCVPLUS, len);
GordonSin 0:0ed2a7c7190c 260 }
GordonSin 0:0ed2a7c7190c 261
GordonSin 0:0ed2a7c7190c 262 return ERR_OK;
GordonSin 0:0ed2a7c7190c 263 }
GordonSin 0:0ed2a7c7190c 264
GordonSin 0:0ed2a7c7190c 265 /**
GordonSin 0:0ed2a7c7190c 266 * Poll callback function for TCP netconns.
GordonSin 0:0ed2a7c7190c 267 * Wakes up an application thread that waits for a connection to close
GordonSin 0:0ed2a7c7190c 268 * or data to be sent. The application thread then takes the
GordonSin 0:0ed2a7c7190c 269 * appropriate action to go on.
GordonSin 0:0ed2a7c7190c 270 *
GordonSin 0:0ed2a7c7190c 271 * Signals the conn->sem.
GordonSin 0:0ed2a7c7190c 272 * netconn_close waits for conn->sem if closing failed.
GordonSin 0:0ed2a7c7190c 273 *
GordonSin 0:0ed2a7c7190c 274 * @see tcp.h (struct tcp_pcb.poll) for parameters and return value
GordonSin 0:0ed2a7c7190c 275 */
GordonSin 0:0ed2a7c7190c 276 static err_t
GordonSin 0:0ed2a7c7190c 277 poll_tcp(void *arg, struct tcp_pcb *pcb)
GordonSin 0:0ed2a7c7190c 278 {
GordonSin 0:0ed2a7c7190c 279 struct netconn *conn = (struct netconn *)arg;
GordonSin 0:0ed2a7c7190c 280
GordonSin 0:0ed2a7c7190c 281 LWIP_UNUSED_ARG(pcb);
GordonSin 0:0ed2a7c7190c 282 LWIP_ASSERT("conn != NULL", (conn != NULL));
GordonSin 0:0ed2a7c7190c 283
GordonSin 0:0ed2a7c7190c 284 if (conn->state == NETCONN_WRITE) {
GordonSin 0:0ed2a7c7190c 285 do_writemore(conn);
GordonSin 0:0ed2a7c7190c 286 } else if (conn->state == NETCONN_CLOSE) {
GordonSin 0:0ed2a7c7190c 287 do_close_internal(conn);
GordonSin 0:0ed2a7c7190c 288 }
GordonSin 0:0ed2a7c7190c 289 /* @todo: implement connect timeout here? */
GordonSin 0:0ed2a7c7190c 290
GordonSin 0:0ed2a7c7190c 291 /* Did a nonblocking write fail before? Then check available write-space. */
GordonSin 0:0ed2a7c7190c 292 if (conn->flags & NETCONN_FLAG_CHECK_WRITESPACE) {
GordonSin 0:0ed2a7c7190c 293 /* If the queued byte- or pbuf-count drops below the configured low-water limit,
GordonSin 0:0ed2a7c7190c 294 let select mark this pcb as writable again. */
GordonSin 0:0ed2a7c7190c 295 if ((conn->pcb.tcp != NULL) && (tcp_sndbuf(conn->pcb.tcp) > TCP_SNDLOWAT) &&
GordonSin 0:0ed2a7c7190c 296 (tcp_sndqueuelen(conn->pcb.tcp) < TCP_SNDQUEUELOWAT)) {
GordonSin 0:0ed2a7c7190c 297 conn->flags &= ~NETCONN_FLAG_CHECK_WRITESPACE;
GordonSin 0:0ed2a7c7190c 298 API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
GordonSin 0:0ed2a7c7190c 299 }
GordonSin 0:0ed2a7c7190c 300 }
GordonSin 0:0ed2a7c7190c 301
GordonSin 0:0ed2a7c7190c 302 return ERR_OK;
GordonSin 0:0ed2a7c7190c 303 }
GordonSin 0:0ed2a7c7190c 304
GordonSin 0:0ed2a7c7190c 305 /**
GordonSin 0:0ed2a7c7190c 306 * Sent callback function for TCP netconns.
GordonSin 0:0ed2a7c7190c 307 * Signals the conn->sem and calls API_EVENT.
GordonSin 0:0ed2a7c7190c 308 * netconn_write waits for conn->sem if send buffer is low.
GordonSin 0:0ed2a7c7190c 309 *
GordonSin 0:0ed2a7c7190c 310 * @see tcp.h (struct tcp_pcb.sent) for parameters and return value
GordonSin 0:0ed2a7c7190c 311 */
GordonSin 0:0ed2a7c7190c 312 static err_t
GordonSin 0:0ed2a7c7190c 313 sent_tcp(void *arg, struct tcp_pcb *pcb, u16_t len)
GordonSin 0:0ed2a7c7190c 314 {
GordonSin 0:0ed2a7c7190c 315 struct netconn *conn = (struct netconn *)arg;
GordonSin 0:0ed2a7c7190c 316
GordonSin 0:0ed2a7c7190c 317 LWIP_UNUSED_ARG(pcb);
GordonSin 0:0ed2a7c7190c 318 LWIP_ASSERT("conn != NULL", (conn != NULL));
GordonSin 0:0ed2a7c7190c 319
GordonSin 0:0ed2a7c7190c 320 if (conn->state == NETCONN_WRITE) {
GordonSin 0:0ed2a7c7190c 321 do_writemore(conn);
GordonSin 0:0ed2a7c7190c 322 } else if (conn->state == NETCONN_CLOSE) {
GordonSin 0:0ed2a7c7190c 323 do_close_internal(conn);
GordonSin 0:0ed2a7c7190c 324 }
GordonSin 0:0ed2a7c7190c 325
GordonSin 0:0ed2a7c7190c 326 if (conn) {
GordonSin 0:0ed2a7c7190c 327 /* If the queued byte- or pbuf-count drops below the configured low-water limit,
GordonSin 0:0ed2a7c7190c 328 let select mark this pcb as writable again. */
GordonSin 0:0ed2a7c7190c 329 if ((conn->pcb.tcp != NULL) && (tcp_sndbuf(conn->pcb.tcp) > TCP_SNDLOWAT) &&
GordonSin 0:0ed2a7c7190c 330 (tcp_sndqueuelen(conn->pcb.tcp) < TCP_SNDQUEUELOWAT)) {
GordonSin 0:0ed2a7c7190c 331 conn->flags &= ~NETCONN_FLAG_CHECK_WRITESPACE;
GordonSin 0:0ed2a7c7190c 332 API_EVENT(conn, NETCONN_EVT_SENDPLUS, len);
GordonSin 0:0ed2a7c7190c 333 }
GordonSin 0:0ed2a7c7190c 334 }
GordonSin 0:0ed2a7c7190c 335
GordonSin 0:0ed2a7c7190c 336 return ERR_OK;
GordonSin 0:0ed2a7c7190c 337 }
GordonSin 0:0ed2a7c7190c 338
GordonSin 0:0ed2a7c7190c 339 /**
GordonSin 0:0ed2a7c7190c 340 * Error callback function for TCP netconns.
GordonSin 0:0ed2a7c7190c 341 * Signals conn->sem, posts to all conn mboxes and calls API_EVENT.
GordonSin 0:0ed2a7c7190c 342 * The application thread has then to decide what to do.
GordonSin 0:0ed2a7c7190c 343 *
GordonSin 0:0ed2a7c7190c 344 * @see tcp.h (struct tcp_pcb.err) for parameters
GordonSin 0:0ed2a7c7190c 345 */
GordonSin 0:0ed2a7c7190c 346 static void
GordonSin 0:0ed2a7c7190c 347 err_tcp(void *arg, err_t err)
GordonSin 0:0ed2a7c7190c 348 {
GordonSin 0:0ed2a7c7190c 349 struct netconn *conn;
GordonSin 0:0ed2a7c7190c 350 enum netconn_state old_state;
GordonSin 0:0ed2a7c7190c 351 SYS_ARCH_DECL_PROTECT(lev);
GordonSin 0:0ed2a7c7190c 352
GordonSin 0:0ed2a7c7190c 353 conn = (struct netconn *)arg;
GordonSin 0:0ed2a7c7190c 354 LWIP_ASSERT("conn != NULL", (conn != NULL));
GordonSin 0:0ed2a7c7190c 355
GordonSin 0:0ed2a7c7190c 356 conn->pcb.tcp = NULL;
GordonSin 0:0ed2a7c7190c 357
GordonSin 0:0ed2a7c7190c 358 /* no check since this is always fatal! */
GordonSin 0:0ed2a7c7190c 359 SYS_ARCH_PROTECT(lev);
GordonSin 0:0ed2a7c7190c 360 conn->last_err = err;
GordonSin 0:0ed2a7c7190c 361 SYS_ARCH_UNPROTECT(lev);
GordonSin 0:0ed2a7c7190c 362
GordonSin 0:0ed2a7c7190c 363 /* reset conn->state now before waking up other threads */
GordonSin 0:0ed2a7c7190c 364 old_state = conn->state;
GordonSin 0:0ed2a7c7190c 365 conn->state = NETCONN_NONE;
GordonSin 0:0ed2a7c7190c 366
GordonSin 0:0ed2a7c7190c 367 /* Notify the user layer about a connection error. Used to signal
GordonSin 0:0ed2a7c7190c 368 select. */
GordonSin 0:0ed2a7c7190c 369 API_EVENT(conn, NETCONN_EVT_ERROR, 0);
GordonSin 0:0ed2a7c7190c 370 /* Try to release selects pending on 'read' or 'write', too.
GordonSin 0:0ed2a7c7190c 371 They will get an error if they actually try to read or write. */
GordonSin 0:0ed2a7c7190c 372 API_EVENT(conn, NETCONN_EVT_RCVPLUS, 0);
GordonSin 0:0ed2a7c7190c 373 API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
GordonSin 0:0ed2a7c7190c 374
GordonSin 0:0ed2a7c7190c 375 /* pass NULL-message to recvmbox to wake up pending recv */
GordonSin 0:0ed2a7c7190c 376 if (sys_mbox_valid(&conn->recvmbox)) {
GordonSin 0:0ed2a7c7190c 377 /* use trypost to prevent deadlock */
GordonSin 0:0ed2a7c7190c 378 sys_mbox_trypost(&conn->recvmbox, NULL);
GordonSin 0:0ed2a7c7190c 379 }
GordonSin 0:0ed2a7c7190c 380 /* pass NULL-message to acceptmbox to wake up pending accept */
GordonSin 0:0ed2a7c7190c 381 if (sys_mbox_valid(&conn->acceptmbox)) {
GordonSin 0:0ed2a7c7190c 382 /* use trypost to preven deadlock */
GordonSin 0:0ed2a7c7190c 383 sys_mbox_trypost(&conn->acceptmbox, NULL);
GordonSin 0:0ed2a7c7190c 384 }
GordonSin 0:0ed2a7c7190c 385
GordonSin 0:0ed2a7c7190c 386 if ((old_state == NETCONN_WRITE) || (old_state == NETCONN_CLOSE) ||
GordonSin 0:0ed2a7c7190c 387 (old_state == NETCONN_CONNECT)) {
GordonSin 0:0ed2a7c7190c 388 /* calling do_writemore/do_close_internal is not necessary
GordonSin 0:0ed2a7c7190c 389 since the pcb has already been deleted! */
GordonSin 0:0ed2a7c7190c 390 int was_nonblocking_connect = IN_NONBLOCKING_CONNECT(conn);
GordonSin 0:0ed2a7c7190c 391 SET_NONBLOCKING_CONNECT(conn, 0);
GordonSin 0:0ed2a7c7190c 392
GordonSin 0:0ed2a7c7190c 393 if (!was_nonblocking_connect) {
GordonSin 0:0ed2a7c7190c 394 /* set error return code */
GordonSin 0:0ed2a7c7190c 395 LWIP_ASSERT("conn->current_msg != NULL", conn->current_msg != NULL);
GordonSin 0:0ed2a7c7190c 396 conn->current_msg->err = err;
GordonSin 0:0ed2a7c7190c 397 conn->current_msg = NULL;
GordonSin 0:0ed2a7c7190c 398 /* wake up the waiting task */
GordonSin 0:0ed2a7c7190c 399 sys_sem_signal(&conn->op_completed);
GordonSin 0:0ed2a7c7190c 400 }
GordonSin 0:0ed2a7c7190c 401 } else {
GordonSin 0:0ed2a7c7190c 402 LWIP_ASSERT("conn->current_msg == NULL", conn->current_msg == NULL);
GordonSin 0:0ed2a7c7190c 403 }
GordonSin 0:0ed2a7c7190c 404 }
GordonSin 0:0ed2a7c7190c 405
GordonSin 0:0ed2a7c7190c 406 /**
GordonSin 0:0ed2a7c7190c 407 * Setup a tcp_pcb with the correct callback function pointers
GordonSin 0:0ed2a7c7190c 408 * and their arguments.
GordonSin 0:0ed2a7c7190c 409 *
GordonSin 0:0ed2a7c7190c 410 * @param conn the TCP netconn to setup
GordonSin 0:0ed2a7c7190c 411 */
GordonSin 0:0ed2a7c7190c 412 static void
GordonSin 0:0ed2a7c7190c 413 setup_tcp(struct netconn *conn)
GordonSin 0:0ed2a7c7190c 414 {
GordonSin 0:0ed2a7c7190c 415 struct tcp_pcb *pcb;
GordonSin 0:0ed2a7c7190c 416
GordonSin 0:0ed2a7c7190c 417 pcb = conn->pcb.tcp;
GordonSin 0:0ed2a7c7190c 418 tcp_arg(pcb, conn);
GordonSin 0:0ed2a7c7190c 419 tcp_recv(pcb, recv_tcp);
GordonSin 0:0ed2a7c7190c 420 tcp_sent(pcb, sent_tcp);
GordonSin 0:0ed2a7c7190c 421 tcp_poll(pcb, poll_tcp, 4);
GordonSin 0:0ed2a7c7190c 422 tcp_err(pcb, err_tcp);
GordonSin 0:0ed2a7c7190c 423 }
GordonSin 0:0ed2a7c7190c 424
GordonSin 0:0ed2a7c7190c 425 /**
GordonSin 0:0ed2a7c7190c 426 * Accept callback function for TCP netconns.
GordonSin 0:0ed2a7c7190c 427 * Allocates a new netconn and posts that to conn->acceptmbox.
GordonSin 0:0ed2a7c7190c 428 *
GordonSin 0:0ed2a7c7190c 429 * @see tcp.h (struct tcp_pcb_listen.accept) for parameters and return value
GordonSin 0:0ed2a7c7190c 430 */
GordonSin 0:0ed2a7c7190c 431 static err_t
GordonSin 0:0ed2a7c7190c 432 accept_function(void *arg, struct tcp_pcb *newpcb, err_t err)
GordonSin 0:0ed2a7c7190c 433 {
GordonSin 0:0ed2a7c7190c 434 struct netconn *newconn;
GordonSin 0:0ed2a7c7190c 435 struct netconn *conn = (struct netconn *)arg;
GordonSin 0:0ed2a7c7190c 436
GordonSin 0:0ed2a7c7190c 437 LWIP_DEBUGF(API_MSG_DEBUG, ("accept_function: newpcb->tate: %s\n", tcp_debug_state_str(newpcb->state)));
GordonSin 0:0ed2a7c7190c 438
GordonSin 0:0ed2a7c7190c 439 if (!sys_mbox_valid(&conn->acceptmbox)) {
GordonSin 0:0ed2a7c7190c 440 LWIP_DEBUGF(API_MSG_DEBUG, ("accept_function: acceptmbox already deleted\n"));
GordonSin 0:0ed2a7c7190c 441 return ERR_VAL;
GordonSin 0:0ed2a7c7190c 442 }
GordonSin 0:0ed2a7c7190c 443
GordonSin 0:0ed2a7c7190c 444 /* We have to set the callback here even though
GordonSin 0:0ed2a7c7190c 445 * the new socket is unknown. conn->socket is marked as -1. */
GordonSin 0:0ed2a7c7190c 446 newconn = netconn_alloc(conn->type, conn->callback);
GordonSin 0:0ed2a7c7190c 447 if (newconn == NULL) {
GordonSin 0:0ed2a7c7190c 448 return ERR_MEM;
GordonSin 0:0ed2a7c7190c 449 }
GordonSin 0:0ed2a7c7190c 450 newconn->pcb.tcp = newpcb;
GordonSin 0:0ed2a7c7190c 451 setup_tcp(newconn);
GordonSin 0:0ed2a7c7190c 452 /* no protection: when creating the pcb, the netconn is not yet known
GordonSin 0:0ed2a7c7190c 453 to the application thread */
GordonSin 0:0ed2a7c7190c 454 newconn->last_err = err;
GordonSin 0:0ed2a7c7190c 455
GordonSin 0:0ed2a7c7190c 456 if (sys_mbox_trypost(&conn->acceptmbox, newconn) != ERR_OK) {
GordonSin 0:0ed2a7c7190c 457 /* When returning != ERR_OK, the pcb is aborted in tcp_process(),
GordonSin 0:0ed2a7c7190c 458 so do nothing here! */
GordonSin 0:0ed2a7c7190c 459 newconn->pcb.tcp = NULL;
GordonSin 0:0ed2a7c7190c 460 /* no need to drain since we know the recvmbox is empty. */
GordonSin 0:0ed2a7c7190c 461 sys_mbox_free(&newconn->recvmbox);
GordonSin 0:0ed2a7c7190c 462 sys_mbox_set_invalid(&newconn->recvmbox);
GordonSin 0:0ed2a7c7190c 463 netconn_free(newconn);
GordonSin 0:0ed2a7c7190c 464 return ERR_MEM;
GordonSin 0:0ed2a7c7190c 465 } else {
GordonSin 0:0ed2a7c7190c 466 /* Register event with callback */
GordonSin 0:0ed2a7c7190c 467 API_EVENT(conn, NETCONN_EVT_RCVPLUS, 0);
GordonSin 0:0ed2a7c7190c 468 }
GordonSin 0:0ed2a7c7190c 469
GordonSin 0:0ed2a7c7190c 470 return ERR_OK;
GordonSin 0:0ed2a7c7190c 471 }
GordonSin 0:0ed2a7c7190c 472 #endif /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 473
GordonSin 0:0ed2a7c7190c 474 /**
GordonSin 0:0ed2a7c7190c 475 * Create a new pcb of a specific type.
GordonSin 0:0ed2a7c7190c 476 * Called from do_newconn().
GordonSin 0:0ed2a7c7190c 477 *
GordonSin 0:0ed2a7c7190c 478 * @param msg the api_msg_msg describing the connection type
GordonSin 0:0ed2a7c7190c 479 * @return msg->conn->err, but the return value is currently ignored
GordonSin 0:0ed2a7c7190c 480 */
GordonSin 0:0ed2a7c7190c 481 static void
GordonSin 0:0ed2a7c7190c 482 pcb_new(struct api_msg_msg *msg)
GordonSin 0:0ed2a7c7190c 483 {
GordonSin 0:0ed2a7c7190c 484 LWIP_ASSERT("pcb_new: pcb already allocated", msg->conn->pcb.tcp == NULL);
GordonSin 0:0ed2a7c7190c 485
GordonSin 0:0ed2a7c7190c 486 /* Allocate a PCB for this connection */
GordonSin 0:0ed2a7c7190c 487 switch(NETCONNTYPE_GROUP(msg->conn->type)) {
GordonSin 0:0ed2a7c7190c 488 #if LWIP_RAW
GordonSin 0:0ed2a7c7190c 489 case NETCONN_RAW:
GordonSin 0:0ed2a7c7190c 490 msg->conn->pcb.raw = raw_new(msg->msg.n.proto);
GordonSin 0:0ed2a7c7190c 491 if(msg->conn->pcb.raw == NULL) {
GordonSin 0:0ed2a7c7190c 492 msg->err = ERR_MEM;
GordonSin 0:0ed2a7c7190c 493 break;
GordonSin 0:0ed2a7c7190c 494 }
GordonSin 0:0ed2a7c7190c 495 raw_recv(msg->conn->pcb.raw, recv_raw, msg->conn);
GordonSin 0:0ed2a7c7190c 496 break;
GordonSin 0:0ed2a7c7190c 497 #endif /* LWIP_RAW */
GordonSin 0:0ed2a7c7190c 498 #if LWIP_UDP
GordonSin 0:0ed2a7c7190c 499 case NETCONN_UDP:
GordonSin 0:0ed2a7c7190c 500 msg->conn->pcb.udp = udp_new();
GordonSin 0:0ed2a7c7190c 501 if(msg->conn->pcb.udp == NULL) {
GordonSin 0:0ed2a7c7190c 502 msg->err = ERR_MEM;
GordonSin 0:0ed2a7c7190c 503 break;
GordonSin 0:0ed2a7c7190c 504 }
GordonSin 0:0ed2a7c7190c 505 #if LWIP_UDPLITE
GordonSin 0:0ed2a7c7190c 506 if (msg->conn->type==NETCONN_UDPLITE) {
GordonSin 0:0ed2a7c7190c 507 udp_setflags(msg->conn->pcb.udp, UDP_FLAGS_UDPLITE);
GordonSin 0:0ed2a7c7190c 508 }
GordonSin 0:0ed2a7c7190c 509 #endif /* LWIP_UDPLITE */
GordonSin 0:0ed2a7c7190c 510 if (msg->conn->type==NETCONN_UDPNOCHKSUM) {
GordonSin 0:0ed2a7c7190c 511 udp_setflags(msg->conn->pcb.udp, UDP_FLAGS_NOCHKSUM);
GordonSin 0:0ed2a7c7190c 512 }
GordonSin 0:0ed2a7c7190c 513 udp_recv(msg->conn->pcb.udp, recv_udp, msg->conn);
GordonSin 0:0ed2a7c7190c 514 break;
GordonSin 0:0ed2a7c7190c 515 #endif /* LWIP_UDP */
GordonSin 0:0ed2a7c7190c 516 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 517 case NETCONN_TCP:
GordonSin 0:0ed2a7c7190c 518 msg->conn->pcb.tcp = tcp_new();
GordonSin 0:0ed2a7c7190c 519 if(msg->conn->pcb.tcp == NULL) {
GordonSin 0:0ed2a7c7190c 520 msg->err = ERR_MEM;
GordonSin 0:0ed2a7c7190c 521 break;
GordonSin 0:0ed2a7c7190c 522 }
GordonSin 0:0ed2a7c7190c 523 setup_tcp(msg->conn);
GordonSin 0:0ed2a7c7190c 524 break;
GordonSin 0:0ed2a7c7190c 525 #endif /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 526 default:
GordonSin 0:0ed2a7c7190c 527 /* Unsupported netconn type, e.g. protocol disabled */
GordonSin 0:0ed2a7c7190c 528 msg->err = ERR_VAL;
GordonSin 0:0ed2a7c7190c 529 break;
GordonSin 0:0ed2a7c7190c 530 }
GordonSin 0:0ed2a7c7190c 531 }
GordonSin 0:0ed2a7c7190c 532
GordonSin 0:0ed2a7c7190c 533 /**
GordonSin 0:0ed2a7c7190c 534 * Create a new pcb of a specific type inside a netconn.
GordonSin 0:0ed2a7c7190c 535 * Called from netconn_new_with_proto_and_callback.
GordonSin 0:0ed2a7c7190c 536 *
GordonSin 0:0ed2a7c7190c 537 * @param msg the api_msg_msg describing the connection type
GordonSin 0:0ed2a7c7190c 538 */
GordonSin 0:0ed2a7c7190c 539 void
GordonSin 0:0ed2a7c7190c 540 do_newconn(struct api_msg_msg *msg)
GordonSin 0:0ed2a7c7190c 541 {
GordonSin 0:0ed2a7c7190c 542 msg->err = ERR_OK;
GordonSin 0:0ed2a7c7190c 543 if(msg->conn->pcb.tcp == NULL) {
GordonSin 0:0ed2a7c7190c 544 pcb_new(msg);
GordonSin 0:0ed2a7c7190c 545 }
GordonSin 0:0ed2a7c7190c 546 /* Else? This "new" connection already has a PCB allocated. */
GordonSin 0:0ed2a7c7190c 547 /* Is this an error condition? Should it be deleted? */
GordonSin 0:0ed2a7c7190c 548 /* We currently just are happy and return. */
GordonSin 0:0ed2a7c7190c 549
GordonSin 0:0ed2a7c7190c 550 TCPIP_APIMSG_ACK(msg);
GordonSin 0:0ed2a7c7190c 551 }
GordonSin 0:0ed2a7c7190c 552
GordonSin 0:0ed2a7c7190c 553 /**
GordonSin 0:0ed2a7c7190c 554 * Create a new netconn (of a specific type) that has a callback function.
GordonSin 0:0ed2a7c7190c 555 * The corresponding pcb is NOT created!
GordonSin 0:0ed2a7c7190c 556 *
GordonSin 0:0ed2a7c7190c 557 * @param t the type of 'connection' to create (@see enum netconn_type)
GordonSin 0:0ed2a7c7190c 558 * @param proto the IP protocol for RAW IP pcbs
GordonSin 0:0ed2a7c7190c 559 * @param callback a function to call on status changes (RX available, TX'ed)
GordonSin 0:0ed2a7c7190c 560 * @return a newly allocated struct netconn or
GordonSin 0:0ed2a7c7190c 561 * NULL on memory error
GordonSin 0:0ed2a7c7190c 562 */
GordonSin 0:0ed2a7c7190c 563 struct netconn*
GordonSin 0:0ed2a7c7190c 564 netconn_alloc(enum netconn_type t, netconn_callback callback)
GordonSin 0:0ed2a7c7190c 565 {
GordonSin 0:0ed2a7c7190c 566 struct netconn *conn;
GordonSin 0:0ed2a7c7190c 567 int size;
GordonSin 0:0ed2a7c7190c 568
GordonSin 0:0ed2a7c7190c 569 conn = (struct netconn *)memp_malloc(MEMP_NETCONN);
GordonSin 0:0ed2a7c7190c 570 if (conn == NULL) {
GordonSin 0:0ed2a7c7190c 571 return NULL;
GordonSin 0:0ed2a7c7190c 572 }
GordonSin 0:0ed2a7c7190c 573
GordonSin 0:0ed2a7c7190c 574 conn->last_err = ERR_OK;
GordonSin 0:0ed2a7c7190c 575 conn->type = t;
GordonSin 0:0ed2a7c7190c 576 conn->pcb.tcp = NULL;
GordonSin 0:0ed2a7c7190c 577
GordonSin 0:0ed2a7c7190c 578 #if (DEFAULT_RAW_RECVMBOX_SIZE == DEFAULT_UDP_RECVMBOX_SIZE) && \
GordonSin 0:0ed2a7c7190c 579 (DEFAULT_RAW_RECVMBOX_SIZE == DEFAULT_TCP_RECVMBOX_SIZE)
GordonSin 0:0ed2a7c7190c 580 size = DEFAULT_RAW_RECVMBOX_SIZE;
GordonSin 0:0ed2a7c7190c 581 #else
GordonSin 0:0ed2a7c7190c 582 switch(NETCONNTYPE_GROUP(t)) {
GordonSin 0:0ed2a7c7190c 583 #if LWIP_RAW
GordonSin 0:0ed2a7c7190c 584 case NETCONN_RAW:
GordonSin 0:0ed2a7c7190c 585 size = DEFAULT_RAW_RECVMBOX_SIZE;
GordonSin 0:0ed2a7c7190c 586 break;
GordonSin 0:0ed2a7c7190c 587 #endif /* LWIP_RAW */
GordonSin 0:0ed2a7c7190c 588 #if LWIP_UDP
GordonSin 0:0ed2a7c7190c 589 case NETCONN_UDP:
GordonSin 0:0ed2a7c7190c 590 size = DEFAULT_UDP_RECVMBOX_SIZE;
GordonSin 0:0ed2a7c7190c 591 break;
GordonSin 0:0ed2a7c7190c 592 #endif /* LWIP_UDP */
GordonSin 0:0ed2a7c7190c 593 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 594 case NETCONN_TCP:
GordonSin 0:0ed2a7c7190c 595 size = DEFAULT_TCP_RECVMBOX_SIZE;
GordonSin 0:0ed2a7c7190c 596 break;
GordonSin 0:0ed2a7c7190c 597 #endif /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 598 default:
GordonSin 0:0ed2a7c7190c 599 LWIP_ASSERT("netconn_alloc: undefined netconn_type", 0);
GordonSin 0:0ed2a7c7190c 600 break;
GordonSin 0:0ed2a7c7190c 601 }
GordonSin 0:0ed2a7c7190c 602 #endif
GordonSin 0:0ed2a7c7190c 603
GordonSin 0:0ed2a7c7190c 604 if (sys_sem_new(&conn->op_completed, 0) != ERR_OK) {
GordonSin 0:0ed2a7c7190c 605 memp_free(MEMP_NETCONN, conn);
GordonSin 0:0ed2a7c7190c 606 return NULL;
GordonSin 0:0ed2a7c7190c 607 }
GordonSin 0:0ed2a7c7190c 608 if (sys_mbox_new(&conn->recvmbox, size) != ERR_OK) {
GordonSin 0:0ed2a7c7190c 609 sys_sem_free(&conn->op_completed);
GordonSin 0:0ed2a7c7190c 610 memp_free(MEMP_NETCONN, conn);
GordonSin 0:0ed2a7c7190c 611 return NULL;
GordonSin 0:0ed2a7c7190c 612 }
GordonSin 0:0ed2a7c7190c 613
GordonSin 0:0ed2a7c7190c 614 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 615 sys_mbox_set_invalid(&conn->acceptmbox);
GordonSin 0:0ed2a7c7190c 616 #endif
GordonSin 0:0ed2a7c7190c 617 conn->state = NETCONN_NONE;
GordonSin 0:0ed2a7c7190c 618 #if LWIP_SOCKET
GordonSin 0:0ed2a7c7190c 619 /* initialize socket to -1 since 0 is a valid socket */
GordonSin 0:0ed2a7c7190c 620 conn->socket = -1;
GordonSin 0:0ed2a7c7190c 621 #endif /* LWIP_SOCKET */
GordonSin 0:0ed2a7c7190c 622 conn->callback = callback;
GordonSin 0:0ed2a7c7190c 623 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 624 conn->current_msg = NULL;
GordonSin 0:0ed2a7c7190c 625 conn->write_offset = 0;
GordonSin 0:0ed2a7c7190c 626 #endif /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 627 #if LWIP_SO_RCVTIMEO
GordonSin 0:0ed2a7c7190c 628 conn->recv_timeout = 0;
GordonSin 0:0ed2a7c7190c 629 #endif /* LWIP_SO_RCVTIMEO */
GordonSin 0:0ed2a7c7190c 630 #if LWIP_SO_RCVBUF
GordonSin 0:0ed2a7c7190c 631 conn->recv_bufsize = RECV_BUFSIZE_DEFAULT;
GordonSin 0:0ed2a7c7190c 632 conn->recv_avail = 0;
GordonSin 0:0ed2a7c7190c 633 #endif /* LWIP_SO_RCVBUF */
GordonSin 0:0ed2a7c7190c 634 conn->flags = 0;
GordonSin 0:0ed2a7c7190c 635 return conn;
GordonSin 0:0ed2a7c7190c 636 }
GordonSin 0:0ed2a7c7190c 637
GordonSin 0:0ed2a7c7190c 638 /**
GordonSin 0:0ed2a7c7190c 639 * Delete a netconn and all its resources.
GordonSin 0:0ed2a7c7190c 640 * The pcb is NOT freed (since we might not be in the right thread context do this).
GordonSin 0:0ed2a7c7190c 641 *
GordonSin 0:0ed2a7c7190c 642 * @param conn the netconn to free
GordonSin 0:0ed2a7c7190c 643 */
GordonSin 0:0ed2a7c7190c 644 void
GordonSin 0:0ed2a7c7190c 645 netconn_free(struct netconn *conn)
GordonSin 0:0ed2a7c7190c 646 {
GordonSin 0:0ed2a7c7190c 647 LWIP_ASSERT("PCB must be deallocated outside this function", conn->pcb.tcp == NULL);
GordonSin 0:0ed2a7c7190c 648 LWIP_ASSERT("recvmbox must be deallocated before calling this function",
GordonSin 0:0ed2a7c7190c 649 !sys_mbox_valid(&conn->recvmbox));
GordonSin 0:0ed2a7c7190c 650 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 651 LWIP_ASSERT("acceptmbox must be deallocated before calling this function",
GordonSin 0:0ed2a7c7190c 652 !sys_mbox_valid(&conn->acceptmbox));
GordonSin 0:0ed2a7c7190c 653 #endif /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 654
GordonSin 0:0ed2a7c7190c 655 sys_sem_free(&conn->op_completed);
GordonSin 0:0ed2a7c7190c 656 sys_sem_set_invalid(&conn->op_completed);
GordonSin 0:0ed2a7c7190c 657
GordonSin 0:0ed2a7c7190c 658 memp_free(MEMP_NETCONN, conn);
GordonSin 0:0ed2a7c7190c 659 }
GordonSin 0:0ed2a7c7190c 660
GordonSin 0:0ed2a7c7190c 661 /**
GordonSin 0:0ed2a7c7190c 662 * Delete rcvmbox and acceptmbox of a netconn and free the left-over data in
GordonSin 0:0ed2a7c7190c 663 * these mboxes
GordonSin 0:0ed2a7c7190c 664 *
GordonSin 0:0ed2a7c7190c 665 * @param conn the netconn to free
GordonSin 0:0ed2a7c7190c 666 * @bytes_drained bytes drained from recvmbox
GordonSin 0:0ed2a7c7190c 667 * @accepts_drained pending connections drained from acceptmbox
GordonSin 0:0ed2a7c7190c 668 */
GordonSin 0:0ed2a7c7190c 669 static void
GordonSin 0:0ed2a7c7190c 670 netconn_drain(struct netconn *conn)
GordonSin 0:0ed2a7c7190c 671 {
GordonSin 0:0ed2a7c7190c 672 void *mem;
GordonSin 0:0ed2a7c7190c 673 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 674 struct pbuf *p;
GordonSin 0:0ed2a7c7190c 675 #endif /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 676
GordonSin 0:0ed2a7c7190c 677 /* This runs in tcpip_thread, so we don't need to lock against rx packets */
GordonSin 0:0ed2a7c7190c 678
GordonSin 0:0ed2a7c7190c 679 /* Delete and drain the recvmbox. */
GordonSin 0:0ed2a7c7190c 680 if (sys_mbox_valid(&conn->recvmbox)) {
GordonSin 0:0ed2a7c7190c 681 while (sys_mbox_tryfetch(&conn->recvmbox, &mem) != SYS_MBOX_EMPTY) {
GordonSin 0:0ed2a7c7190c 682 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 683 if (conn->type == NETCONN_TCP) {
GordonSin 0:0ed2a7c7190c 684 if(mem != NULL) {
GordonSin 0:0ed2a7c7190c 685 p = (struct pbuf*)mem;
GordonSin 0:0ed2a7c7190c 686 /* pcb might be set to NULL already by err_tcp() */
GordonSin 0:0ed2a7c7190c 687 if (conn->pcb.tcp != NULL) {
GordonSin 0:0ed2a7c7190c 688 tcp_recved(conn->pcb.tcp, p->tot_len);
GordonSin 0:0ed2a7c7190c 689 }
GordonSin 0:0ed2a7c7190c 690 pbuf_free(p);
GordonSin 0:0ed2a7c7190c 691 }
GordonSin 0:0ed2a7c7190c 692 } else
GordonSin 0:0ed2a7c7190c 693 #endif /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 694 {
GordonSin 0:0ed2a7c7190c 695 netbuf_delete((struct netbuf *)mem);
GordonSin 0:0ed2a7c7190c 696 }
GordonSin 0:0ed2a7c7190c 697 }
GordonSin 0:0ed2a7c7190c 698 sys_mbox_free(&conn->recvmbox);
GordonSin 0:0ed2a7c7190c 699 sys_mbox_set_invalid(&conn->recvmbox);
GordonSin 0:0ed2a7c7190c 700 }
GordonSin 0:0ed2a7c7190c 701
GordonSin 0:0ed2a7c7190c 702 /* Delete and drain the acceptmbox. */
GordonSin 0:0ed2a7c7190c 703 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 704 if (sys_mbox_valid(&conn->acceptmbox)) {
GordonSin 0:0ed2a7c7190c 705 while (sys_mbox_tryfetch(&conn->acceptmbox, &mem) != SYS_MBOX_EMPTY) {
GordonSin 0:0ed2a7c7190c 706 struct netconn *newconn = (struct netconn *)mem;
GordonSin 0:0ed2a7c7190c 707 /* Only tcp pcbs have an acceptmbox, so no need to check conn->type */
GordonSin 0:0ed2a7c7190c 708 /* pcb might be set to NULL already by err_tcp() */
GordonSin 0:0ed2a7c7190c 709 if (conn->pcb.tcp != NULL) {
GordonSin 0:0ed2a7c7190c 710 tcp_accepted(conn->pcb.tcp);
GordonSin 0:0ed2a7c7190c 711 }
GordonSin 0:0ed2a7c7190c 712 /* drain recvmbox */
GordonSin 0:0ed2a7c7190c 713 netconn_drain(newconn);
GordonSin 0:0ed2a7c7190c 714 if (newconn->pcb.tcp != NULL) {
GordonSin 0:0ed2a7c7190c 715 tcp_abort(newconn->pcb.tcp);
GordonSin 0:0ed2a7c7190c 716 newconn->pcb.tcp = NULL;
GordonSin 0:0ed2a7c7190c 717 }
GordonSin 0:0ed2a7c7190c 718 netconn_free(newconn);
GordonSin 0:0ed2a7c7190c 719 }
GordonSin 0:0ed2a7c7190c 720 sys_mbox_free(&conn->acceptmbox);
GordonSin 0:0ed2a7c7190c 721 sys_mbox_set_invalid(&conn->acceptmbox);
GordonSin 0:0ed2a7c7190c 722 }
GordonSin 0:0ed2a7c7190c 723 #endif /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 724 }
GordonSin 0:0ed2a7c7190c 725
GordonSin 0:0ed2a7c7190c 726 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 727 /**
GordonSin 0:0ed2a7c7190c 728 * Internal helper function to close a TCP netconn: since this sometimes
GordonSin 0:0ed2a7c7190c 729 * doesn't work at the first attempt, this function is called from multiple
GordonSin 0:0ed2a7c7190c 730 * places.
GordonSin 0:0ed2a7c7190c 731 *
GordonSin 0:0ed2a7c7190c 732 * @param conn the TCP netconn to close
GordonSin 0:0ed2a7c7190c 733 */
GordonSin 0:0ed2a7c7190c 734 static void
GordonSin 0:0ed2a7c7190c 735 do_close_internal(struct netconn *conn)
GordonSin 0:0ed2a7c7190c 736 {
GordonSin 0:0ed2a7c7190c 737 err_t err;
GordonSin 0:0ed2a7c7190c 738 u8_t shut, shut_rx, shut_tx, close;
GordonSin 0:0ed2a7c7190c 739
GordonSin 0:0ed2a7c7190c 740 LWIP_ASSERT("invalid conn", (conn != NULL));
GordonSin 0:0ed2a7c7190c 741 LWIP_ASSERT("this is for tcp netconns only", (conn->type == NETCONN_TCP));
GordonSin 0:0ed2a7c7190c 742 LWIP_ASSERT("conn must be in state NETCONN_CLOSE", (conn->state == NETCONN_CLOSE));
GordonSin 0:0ed2a7c7190c 743 LWIP_ASSERT("pcb already closed", (conn->pcb.tcp != NULL));
GordonSin 0:0ed2a7c7190c 744 LWIP_ASSERT("conn->current_msg != NULL", conn->current_msg != NULL);
GordonSin 0:0ed2a7c7190c 745
GordonSin 0:0ed2a7c7190c 746 shut = conn->current_msg->msg.sd.shut;
GordonSin 0:0ed2a7c7190c 747 shut_rx = shut & NETCONN_SHUT_RD;
GordonSin 0:0ed2a7c7190c 748 shut_tx = shut & NETCONN_SHUT_WR;
GordonSin 0:0ed2a7c7190c 749 /* shutting down both ends is the same as closing */
GordonSin 0:0ed2a7c7190c 750 close = shut == NETCONN_SHUT_RDWR;
GordonSin 0:0ed2a7c7190c 751
GordonSin 0:0ed2a7c7190c 752 /* Set back some callback pointers */
GordonSin 0:0ed2a7c7190c 753 if (close) {
GordonSin 0:0ed2a7c7190c 754 tcp_arg(conn->pcb.tcp, NULL);
GordonSin 0:0ed2a7c7190c 755 }
GordonSin 0:0ed2a7c7190c 756 if (conn->pcb.tcp->state == LISTEN) {
GordonSin 0:0ed2a7c7190c 757 tcp_accept(conn->pcb.tcp, NULL);
GordonSin 0:0ed2a7c7190c 758 } else {
GordonSin 0:0ed2a7c7190c 759 /* some callbacks have to be reset if tcp_close is not successful */
GordonSin 0:0ed2a7c7190c 760 if (shut_rx) {
GordonSin 0:0ed2a7c7190c 761 tcp_recv(conn->pcb.tcp, NULL);
GordonSin 0:0ed2a7c7190c 762 tcp_accept(conn->pcb.tcp, NULL);
GordonSin 0:0ed2a7c7190c 763 }
GordonSin 0:0ed2a7c7190c 764 if (shut_tx) {
GordonSin 0:0ed2a7c7190c 765 tcp_sent(conn->pcb.tcp, NULL);
GordonSin 0:0ed2a7c7190c 766 }
GordonSin 0:0ed2a7c7190c 767 if (close) {
GordonSin 0:0ed2a7c7190c 768 tcp_poll(conn->pcb.tcp, NULL, 4);
GordonSin 0:0ed2a7c7190c 769 tcp_err(conn->pcb.tcp, NULL);
GordonSin 0:0ed2a7c7190c 770 }
GordonSin 0:0ed2a7c7190c 771 }
GordonSin 0:0ed2a7c7190c 772 /* Try to close the connection */
GordonSin 0:0ed2a7c7190c 773 if (shut == NETCONN_SHUT_RDWR) {
GordonSin 0:0ed2a7c7190c 774 err = tcp_close(conn->pcb.tcp);
GordonSin 0:0ed2a7c7190c 775 } else {
GordonSin 0:0ed2a7c7190c 776 err = tcp_shutdown(conn->pcb.tcp, shut & NETCONN_SHUT_RD, shut & NETCONN_SHUT_WR);
GordonSin 0:0ed2a7c7190c 777 }
GordonSin 0:0ed2a7c7190c 778 if (err == ERR_OK) {
GordonSin 0:0ed2a7c7190c 779 /* Closing succeeded */
GordonSin 0:0ed2a7c7190c 780 conn->current_msg->err = ERR_OK;
GordonSin 0:0ed2a7c7190c 781 conn->current_msg = NULL;
GordonSin 0:0ed2a7c7190c 782 conn->state = NETCONN_NONE;
GordonSin 0:0ed2a7c7190c 783 /* Set back some callback pointers as conn is going away */
GordonSin 0:0ed2a7c7190c 784 conn->pcb.tcp = NULL;
GordonSin 0:0ed2a7c7190c 785 /* Trigger select() in socket layer. Make sure everybody notices activity
GordonSin 0:0ed2a7c7190c 786 on the connection, error first! */
GordonSin 0:0ed2a7c7190c 787 if (close) {
GordonSin 0:0ed2a7c7190c 788 API_EVENT(conn, NETCONN_EVT_ERROR, 0);
GordonSin 0:0ed2a7c7190c 789 }
GordonSin 0:0ed2a7c7190c 790 if (shut_rx) {
GordonSin 0:0ed2a7c7190c 791 API_EVENT(conn, NETCONN_EVT_RCVPLUS, 0);
GordonSin 0:0ed2a7c7190c 792 }
GordonSin 0:0ed2a7c7190c 793 if (shut_tx) {
GordonSin 0:0ed2a7c7190c 794 API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
GordonSin 0:0ed2a7c7190c 795 }
GordonSin 0:0ed2a7c7190c 796 /* wake up the application task */
GordonSin 0:0ed2a7c7190c 797 sys_sem_signal(&conn->op_completed);
GordonSin 0:0ed2a7c7190c 798 } else {
GordonSin 0:0ed2a7c7190c 799 /* Closing failed, restore some of the callbacks */
GordonSin 0:0ed2a7c7190c 800 /* Closing of listen pcb will never fail! */
GordonSin 0:0ed2a7c7190c 801 LWIP_ASSERT("Closing a listen pcb may not fail!", (conn->pcb.tcp->state != LISTEN));
GordonSin 0:0ed2a7c7190c 802 tcp_sent(conn->pcb.tcp, sent_tcp);
GordonSin 0:0ed2a7c7190c 803 tcp_poll(conn->pcb.tcp, poll_tcp, 4);
GordonSin 0:0ed2a7c7190c 804 tcp_err(conn->pcb.tcp, err_tcp);
GordonSin 0:0ed2a7c7190c 805 tcp_arg(conn->pcb.tcp, conn);
GordonSin 0:0ed2a7c7190c 806 /* don't restore recv callback: we don't want to receive any more data */
GordonSin 0:0ed2a7c7190c 807 }
GordonSin 0:0ed2a7c7190c 808 /* If closing didn't succeed, we get called again either
GordonSin 0:0ed2a7c7190c 809 from poll_tcp or from sent_tcp */
GordonSin 0:0ed2a7c7190c 810 }
GordonSin 0:0ed2a7c7190c 811 #endif /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 812
GordonSin 0:0ed2a7c7190c 813 /**
GordonSin 0:0ed2a7c7190c 814 * Delete the pcb inside a netconn.
GordonSin 0:0ed2a7c7190c 815 * Called from netconn_delete.
GordonSin 0:0ed2a7c7190c 816 *
GordonSin 0:0ed2a7c7190c 817 * @param msg the api_msg_msg pointing to the connection
GordonSin 0:0ed2a7c7190c 818 */
GordonSin 0:0ed2a7c7190c 819 void
GordonSin 0:0ed2a7c7190c 820 do_delconn(struct api_msg_msg *msg)
GordonSin 0:0ed2a7c7190c 821 {
GordonSin 0:0ed2a7c7190c 822 /* @todo TCP: abort running write/connect? */
GordonSin 0:0ed2a7c7190c 823 if ((msg->conn->state != NETCONN_NONE) &&
GordonSin 0:0ed2a7c7190c 824 (msg->conn->state != NETCONN_LISTEN) &&
GordonSin 0:0ed2a7c7190c 825 (msg->conn->state != NETCONN_CONNECT)) {
GordonSin 0:0ed2a7c7190c 826 /* this only happens for TCP netconns */
GordonSin 0:0ed2a7c7190c 827 LWIP_ASSERT("msg->conn->type == NETCONN_TCP", msg->conn->type == NETCONN_TCP);
GordonSin 0:0ed2a7c7190c 828 msg->err = ERR_INPROGRESS;
GordonSin 0:0ed2a7c7190c 829 } else {
GordonSin 0:0ed2a7c7190c 830 LWIP_ASSERT("blocking connect in progress",
GordonSin 0:0ed2a7c7190c 831 (msg->conn->state != NETCONN_CONNECT) || IN_NONBLOCKING_CONNECT(msg->conn));
GordonSin 0:0ed2a7c7190c 832 /* Drain and delete mboxes */
GordonSin 0:0ed2a7c7190c 833 netconn_drain(msg->conn);
GordonSin 0:0ed2a7c7190c 834
GordonSin 0:0ed2a7c7190c 835 if (msg->conn->pcb.tcp != NULL) {
GordonSin 0:0ed2a7c7190c 836
GordonSin 0:0ed2a7c7190c 837 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
GordonSin 0:0ed2a7c7190c 838 #if LWIP_RAW
GordonSin 0:0ed2a7c7190c 839 case NETCONN_RAW:
GordonSin 0:0ed2a7c7190c 840 raw_remove(msg->conn->pcb.raw);
GordonSin 0:0ed2a7c7190c 841 break;
GordonSin 0:0ed2a7c7190c 842 #endif /* LWIP_RAW */
GordonSin 0:0ed2a7c7190c 843 #if LWIP_UDP
GordonSin 0:0ed2a7c7190c 844 case NETCONN_UDP:
GordonSin 0:0ed2a7c7190c 845 msg->conn->pcb.udp->recv_arg = NULL;
GordonSin 0:0ed2a7c7190c 846 udp_remove(msg->conn->pcb.udp);
GordonSin 0:0ed2a7c7190c 847 break;
GordonSin 0:0ed2a7c7190c 848 #endif /* LWIP_UDP */
GordonSin 0:0ed2a7c7190c 849 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 850 case NETCONN_TCP:
GordonSin 0:0ed2a7c7190c 851 LWIP_ASSERT("already writing or closing", msg->conn->current_msg == NULL &&
GordonSin 0:0ed2a7c7190c 852 msg->conn->write_offset == 0);
GordonSin 0:0ed2a7c7190c 853 msg->conn->state = NETCONN_CLOSE;
GordonSin 0:0ed2a7c7190c 854 msg->msg.sd.shut = NETCONN_SHUT_RDWR;
GordonSin 0:0ed2a7c7190c 855 msg->conn->current_msg = msg;
GordonSin 0:0ed2a7c7190c 856 do_close_internal(msg->conn);
GordonSin 0:0ed2a7c7190c 857 /* API_EVENT is called inside do_close_internal, before releasing
GordonSin 0:0ed2a7c7190c 858 the application thread, so we can return at this point! */
GordonSin 0:0ed2a7c7190c 859 return;
GordonSin 0:0ed2a7c7190c 860 #endif /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 861 default:
GordonSin 0:0ed2a7c7190c 862 break;
GordonSin 0:0ed2a7c7190c 863 }
GordonSin 0:0ed2a7c7190c 864 msg->conn->pcb.tcp = NULL;
GordonSin 0:0ed2a7c7190c 865 }
GordonSin 0:0ed2a7c7190c 866 /* tcp netconns don't come here! */
GordonSin 0:0ed2a7c7190c 867
GordonSin 0:0ed2a7c7190c 868 /* @todo: this lets select make the socket readable and writable,
GordonSin 0:0ed2a7c7190c 869 which is wrong! errfd instead? */
GordonSin 0:0ed2a7c7190c 870 API_EVENT(msg->conn, NETCONN_EVT_RCVPLUS, 0);
GordonSin 0:0ed2a7c7190c 871 API_EVENT(msg->conn, NETCONN_EVT_SENDPLUS, 0);
GordonSin 0:0ed2a7c7190c 872 }
GordonSin 0:0ed2a7c7190c 873 if (sys_sem_valid(&msg->conn->op_completed)) {
GordonSin 0:0ed2a7c7190c 874 sys_sem_signal(&msg->conn->op_completed);
GordonSin 0:0ed2a7c7190c 875 }
GordonSin 0:0ed2a7c7190c 876 }
GordonSin 0:0ed2a7c7190c 877
GordonSin 0:0ed2a7c7190c 878 /**
GordonSin 0:0ed2a7c7190c 879 * Bind a pcb contained in a netconn
GordonSin 0:0ed2a7c7190c 880 * Called from netconn_bind.
GordonSin 0:0ed2a7c7190c 881 *
GordonSin 0:0ed2a7c7190c 882 * @param msg the api_msg_msg pointing to the connection and containing
GordonSin 0:0ed2a7c7190c 883 * the IP address and port to bind to
GordonSin 0:0ed2a7c7190c 884 */
GordonSin 0:0ed2a7c7190c 885 void
GordonSin 0:0ed2a7c7190c 886 do_bind(struct api_msg_msg *msg)
GordonSin 0:0ed2a7c7190c 887 {
GordonSin 0:0ed2a7c7190c 888 if (ERR_IS_FATAL(msg->conn->last_err)) {
GordonSin 0:0ed2a7c7190c 889 msg->err = msg->conn->last_err;
GordonSin 0:0ed2a7c7190c 890 } else {
GordonSin 0:0ed2a7c7190c 891 msg->err = ERR_VAL;
GordonSin 0:0ed2a7c7190c 892 if (msg->conn->pcb.tcp != NULL) {
GordonSin 0:0ed2a7c7190c 893 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
GordonSin 0:0ed2a7c7190c 894 #if LWIP_RAW
GordonSin 0:0ed2a7c7190c 895 case NETCONN_RAW:
GordonSin 0:0ed2a7c7190c 896 msg->err = raw_bind(msg->conn->pcb.raw, msg->msg.bc.ipaddr);
GordonSin 0:0ed2a7c7190c 897 break;
GordonSin 0:0ed2a7c7190c 898 #endif /* LWIP_RAW */
GordonSin 0:0ed2a7c7190c 899 #if LWIP_UDP
GordonSin 0:0ed2a7c7190c 900 case NETCONN_UDP:
GordonSin 0:0ed2a7c7190c 901 msg->err = udp_bind(msg->conn->pcb.udp, msg->msg.bc.ipaddr, msg->msg.bc.port);
GordonSin 0:0ed2a7c7190c 902 break;
GordonSin 0:0ed2a7c7190c 903 #endif /* LWIP_UDP */
GordonSin 0:0ed2a7c7190c 904 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 905 case NETCONN_TCP:
GordonSin 0:0ed2a7c7190c 906 msg->err = tcp_bind(msg->conn->pcb.tcp, msg->msg.bc.ipaddr, msg->msg.bc.port);
GordonSin 0:0ed2a7c7190c 907 break;
GordonSin 0:0ed2a7c7190c 908 #endif /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 909 default:
GordonSin 0:0ed2a7c7190c 910 break;
GordonSin 0:0ed2a7c7190c 911 }
GordonSin 0:0ed2a7c7190c 912 }
GordonSin 0:0ed2a7c7190c 913 }
GordonSin 0:0ed2a7c7190c 914 TCPIP_APIMSG_ACK(msg);
GordonSin 0:0ed2a7c7190c 915 }
GordonSin 0:0ed2a7c7190c 916
GordonSin 0:0ed2a7c7190c 917 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 918 /**
GordonSin 0:0ed2a7c7190c 919 * TCP callback function if a connection (opened by tcp_connect/do_connect) has
GordonSin 0:0ed2a7c7190c 920 * been established (or reset by the remote host).
GordonSin 0:0ed2a7c7190c 921 *
GordonSin 0:0ed2a7c7190c 922 * @see tcp.h (struct tcp_pcb.connected) for parameters and return values
GordonSin 0:0ed2a7c7190c 923 */
GordonSin 0:0ed2a7c7190c 924 static err_t
GordonSin 0:0ed2a7c7190c 925 do_connected(void *arg, struct tcp_pcb *pcb, err_t err)
GordonSin 0:0ed2a7c7190c 926 {
GordonSin 0:0ed2a7c7190c 927 struct netconn *conn;
GordonSin 0:0ed2a7c7190c 928 int was_blocking;
GordonSin 0:0ed2a7c7190c 929
GordonSin 0:0ed2a7c7190c 930 LWIP_UNUSED_ARG(pcb);
GordonSin 0:0ed2a7c7190c 931
GordonSin 0:0ed2a7c7190c 932 conn = (struct netconn *)arg;
GordonSin 0:0ed2a7c7190c 933
GordonSin 0:0ed2a7c7190c 934 if (conn == NULL) {
GordonSin 0:0ed2a7c7190c 935 return ERR_VAL;
GordonSin 0:0ed2a7c7190c 936 }
GordonSin 0:0ed2a7c7190c 937
GordonSin 0:0ed2a7c7190c 938 LWIP_ASSERT("conn->state == NETCONN_CONNECT", conn->state == NETCONN_CONNECT);
GordonSin 0:0ed2a7c7190c 939 LWIP_ASSERT("(conn->current_msg != NULL) || conn->in_non_blocking_connect",
GordonSin 0:0ed2a7c7190c 940 (conn->current_msg != NULL) || IN_NONBLOCKING_CONNECT(conn));
GordonSin 0:0ed2a7c7190c 941
GordonSin 0:0ed2a7c7190c 942 if (conn->current_msg != NULL) {
GordonSin 0:0ed2a7c7190c 943 conn->current_msg->err = err;
GordonSin 0:0ed2a7c7190c 944 }
GordonSin 0:0ed2a7c7190c 945 if ((conn->type == NETCONN_TCP) && (err == ERR_OK)) {
GordonSin 0:0ed2a7c7190c 946 setup_tcp(conn);
GordonSin 0:0ed2a7c7190c 947 }
GordonSin 0:0ed2a7c7190c 948 was_blocking = !IN_NONBLOCKING_CONNECT(conn);
GordonSin 0:0ed2a7c7190c 949 SET_NONBLOCKING_CONNECT(conn, 0);
GordonSin 0:0ed2a7c7190c 950 conn->current_msg = NULL;
GordonSin 0:0ed2a7c7190c 951 conn->state = NETCONN_NONE;
GordonSin 0:0ed2a7c7190c 952 if (!was_blocking) {
GordonSin 0:0ed2a7c7190c 953 NETCONN_SET_SAFE_ERR(conn, ERR_OK);
GordonSin 0:0ed2a7c7190c 954 }
GordonSin 0:0ed2a7c7190c 955 API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
GordonSin 0:0ed2a7c7190c 956
GordonSin 0:0ed2a7c7190c 957 if (was_blocking) {
GordonSin 0:0ed2a7c7190c 958 sys_sem_signal(&conn->op_completed);
GordonSin 0:0ed2a7c7190c 959 }
GordonSin 0:0ed2a7c7190c 960 return ERR_OK;
GordonSin 0:0ed2a7c7190c 961 }
GordonSin 0:0ed2a7c7190c 962 #endif /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 963
GordonSin 0:0ed2a7c7190c 964 /**
GordonSin 0:0ed2a7c7190c 965 * Connect a pcb contained inside a netconn
GordonSin 0:0ed2a7c7190c 966 * Called from netconn_connect.
GordonSin 0:0ed2a7c7190c 967 *
GordonSin 0:0ed2a7c7190c 968 * @param msg the api_msg_msg pointing to the connection and containing
GordonSin 0:0ed2a7c7190c 969 * the IP address and port to connect to
GordonSin 0:0ed2a7c7190c 970 */
GordonSin 0:0ed2a7c7190c 971 void
GordonSin 0:0ed2a7c7190c 972 do_connect(struct api_msg_msg *msg)
GordonSin 0:0ed2a7c7190c 973 {
GordonSin 0:0ed2a7c7190c 974 if (msg->conn->pcb.tcp == NULL) {
GordonSin 0:0ed2a7c7190c 975 /* This may happen when calling netconn_connect() a second time */
GordonSin 0:0ed2a7c7190c 976 msg->err = ERR_CLSD;
GordonSin 0:0ed2a7c7190c 977 } else {
GordonSin 0:0ed2a7c7190c 978 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
GordonSin 0:0ed2a7c7190c 979 #if LWIP_RAW
GordonSin 0:0ed2a7c7190c 980 case NETCONN_RAW:
GordonSin 0:0ed2a7c7190c 981 msg->err = raw_connect(msg->conn->pcb.raw, msg->msg.bc.ipaddr);
GordonSin 0:0ed2a7c7190c 982 break;
GordonSin 0:0ed2a7c7190c 983 #endif /* LWIP_RAW */
GordonSin 0:0ed2a7c7190c 984 #if LWIP_UDP
GordonSin 0:0ed2a7c7190c 985 case NETCONN_UDP:
GordonSin 0:0ed2a7c7190c 986 msg->err = udp_connect(msg->conn->pcb.udp, msg->msg.bc.ipaddr, msg->msg.bc.port);
GordonSin 0:0ed2a7c7190c 987 break;
GordonSin 0:0ed2a7c7190c 988 #endif /* LWIP_UDP */
GordonSin 0:0ed2a7c7190c 989 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 990 case NETCONN_TCP:
GordonSin 0:0ed2a7c7190c 991 /* Prevent connect while doing any other action. */
GordonSin 0:0ed2a7c7190c 992 if (msg->conn->state != NETCONN_NONE) {
GordonSin 0:0ed2a7c7190c 993 msg->err = ERR_ISCONN;
GordonSin 0:0ed2a7c7190c 994 } else {
GordonSin 0:0ed2a7c7190c 995 setup_tcp(msg->conn);
GordonSin 0:0ed2a7c7190c 996 msg->err = tcp_connect(msg->conn->pcb.tcp, msg->msg.bc.ipaddr,
GordonSin 0:0ed2a7c7190c 997 msg->msg.bc.port, do_connected);
GordonSin 0:0ed2a7c7190c 998 if (msg->err == ERR_OK) {
GordonSin 0:0ed2a7c7190c 999 u8_t non_blocking = netconn_is_nonblocking(msg->conn);
GordonSin 0:0ed2a7c7190c 1000 msg->conn->state = NETCONN_CONNECT;
GordonSin 0:0ed2a7c7190c 1001 SET_NONBLOCKING_CONNECT(msg->conn, non_blocking);
GordonSin 0:0ed2a7c7190c 1002 if (non_blocking) {
GordonSin 0:0ed2a7c7190c 1003 msg->err = ERR_INPROGRESS;
GordonSin 0:0ed2a7c7190c 1004 } else {
GordonSin 0:0ed2a7c7190c 1005 msg->conn->current_msg = msg;
GordonSin 0:0ed2a7c7190c 1006 /* sys_sem_signal() is called from do_connected (or err_tcp()),
GordonSin 0:0ed2a7c7190c 1007 * when the connection is established! */
GordonSin 0:0ed2a7c7190c 1008 return;
GordonSin 0:0ed2a7c7190c 1009 }
GordonSin 0:0ed2a7c7190c 1010 }
GordonSin 0:0ed2a7c7190c 1011 }
GordonSin 0:0ed2a7c7190c 1012 break;
GordonSin 0:0ed2a7c7190c 1013 #endif /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 1014 default:
GordonSin 0:0ed2a7c7190c 1015 LWIP_ERROR("Invalid netconn type", 0, do{ msg->err = ERR_VAL; }while(0));
GordonSin 0:0ed2a7c7190c 1016 break;
GordonSin 0:0ed2a7c7190c 1017 }
GordonSin 0:0ed2a7c7190c 1018 }
GordonSin 0:0ed2a7c7190c 1019 sys_sem_signal(&msg->conn->op_completed);
GordonSin 0:0ed2a7c7190c 1020 }
GordonSin 0:0ed2a7c7190c 1021
GordonSin 0:0ed2a7c7190c 1022 /**
GordonSin 0:0ed2a7c7190c 1023 * Connect a pcb contained inside a netconn
GordonSin 0:0ed2a7c7190c 1024 * Only used for UDP netconns.
GordonSin 0:0ed2a7c7190c 1025 * Called from netconn_disconnect.
GordonSin 0:0ed2a7c7190c 1026 *
GordonSin 0:0ed2a7c7190c 1027 * @param msg the api_msg_msg pointing to the connection to disconnect
GordonSin 0:0ed2a7c7190c 1028 */
GordonSin 0:0ed2a7c7190c 1029 void
GordonSin 0:0ed2a7c7190c 1030 do_disconnect(struct api_msg_msg *msg)
GordonSin 0:0ed2a7c7190c 1031 {
GordonSin 0:0ed2a7c7190c 1032 #if LWIP_UDP
GordonSin 0:0ed2a7c7190c 1033 if (NETCONNTYPE_GROUP(msg->conn->type) == NETCONN_UDP) {
GordonSin 0:0ed2a7c7190c 1034 udp_disconnect(msg->conn->pcb.udp);
GordonSin 0:0ed2a7c7190c 1035 msg->err = ERR_OK;
GordonSin 0:0ed2a7c7190c 1036 } else
GordonSin 0:0ed2a7c7190c 1037 #endif /* LWIP_UDP */
GordonSin 0:0ed2a7c7190c 1038 {
GordonSin 0:0ed2a7c7190c 1039 msg->err = ERR_VAL;
GordonSin 0:0ed2a7c7190c 1040 }
GordonSin 0:0ed2a7c7190c 1041 TCPIP_APIMSG_ACK(msg);
GordonSin 0:0ed2a7c7190c 1042 }
GordonSin 0:0ed2a7c7190c 1043
GordonSin 0:0ed2a7c7190c 1044 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 1045 /**
GordonSin 0:0ed2a7c7190c 1046 * Set a TCP pcb contained in a netconn into listen mode
GordonSin 0:0ed2a7c7190c 1047 * Called from netconn_listen.
GordonSin 0:0ed2a7c7190c 1048 *
GordonSin 0:0ed2a7c7190c 1049 * @param msg the api_msg_msg pointing to the connection
GordonSin 0:0ed2a7c7190c 1050 */
GordonSin 0:0ed2a7c7190c 1051 void
GordonSin 0:0ed2a7c7190c 1052 do_listen(struct api_msg_msg *msg)
GordonSin 0:0ed2a7c7190c 1053 {
GordonSin 0:0ed2a7c7190c 1054 if (ERR_IS_FATAL(msg->conn->last_err)) {
GordonSin 0:0ed2a7c7190c 1055 msg->err = msg->conn->last_err;
GordonSin 0:0ed2a7c7190c 1056 } else {
GordonSin 0:0ed2a7c7190c 1057 msg->err = ERR_CONN;
GordonSin 0:0ed2a7c7190c 1058 if (msg->conn->pcb.tcp != NULL) {
GordonSin 0:0ed2a7c7190c 1059 if (msg->conn->type == NETCONN_TCP) {
GordonSin 0:0ed2a7c7190c 1060 if (msg->conn->state == NETCONN_NONE) {
GordonSin 0:0ed2a7c7190c 1061 #if TCP_LISTEN_BACKLOG
GordonSin 0:0ed2a7c7190c 1062 struct tcp_pcb* lpcb = tcp_listen_with_backlog(msg->conn->pcb.tcp, msg->msg.lb.backlog);
GordonSin 0:0ed2a7c7190c 1063 #else /* TCP_LISTEN_BACKLOG */
GordonSin 0:0ed2a7c7190c 1064 struct tcp_pcb* lpcb = tcp_listen(msg->conn->pcb.tcp);
GordonSin 0:0ed2a7c7190c 1065 #endif /* TCP_LISTEN_BACKLOG */
GordonSin 0:0ed2a7c7190c 1066 if (lpcb == NULL) {
GordonSin 0:0ed2a7c7190c 1067 /* in this case, the old pcb is still allocated */
GordonSin 0:0ed2a7c7190c 1068 msg->err = ERR_MEM;
GordonSin 0:0ed2a7c7190c 1069 } else {
GordonSin 0:0ed2a7c7190c 1070 /* delete the recvmbox and allocate the acceptmbox */
GordonSin 0:0ed2a7c7190c 1071 if (sys_mbox_valid(&msg->conn->recvmbox)) {
GordonSin 0:0ed2a7c7190c 1072 /** @todo: should we drain the recvmbox here? */
GordonSin 0:0ed2a7c7190c 1073 sys_mbox_free(&msg->conn->recvmbox);
GordonSin 0:0ed2a7c7190c 1074 sys_mbox_set_invalid(&msg->conn->recvmbox);
GordonSin 0:0ed2a7c7190c 1075 }
GordonSin 0:0ed2a7c7190c 1076 msg->err = ERR_OK;
GordonSin 0:0ed2a7c7190c 1077 if (!sys_mbox_valid(&msg->conn->acceptmbox)) {
GordonSin 0:0ed2a7c7190c 1078 msg->err = sys_mbox_new(&msg->conn->acceptmbox, DEFAULT_ACCEPTMBOX_SIZE);
GordonSin 0:0ed2a7c7190c 1079 }
GordonSin 0:0ed2a7c7190c 1080 if (msg->err == ERR_OK) {
GordonSin 0:0ed2a7c7190c 1081 msg->conn->state = NETCONN_LISTEN;
GordonSin 0:0ed2a7c7190c 1082 msg->conn->pcb.tcp = lpcb;
GordonSin 0:0ed2a7c7190c 1083 tcp_arg(msg->conn->pcb.tcp, msg->conn);
GordonSin 0:0ed2a7c7190c 1084 tcp_accept(msg->conn->pcb.tcp, accept_function);
GordonSin 0:0ed2a7c7190c 1085 } else {
GordonSin 0:0ed2a7c7190c 1086 /* since the old pcb is already deallocated, free lpcb now */
GordonSin 0:0ed2a7c7190c 1087 tcp_close(lpcb);
GordonSin 0:0ed2a7c7190c 1088 msg->conn->pcb.tcp = NULL;
GordonSin 0:0ed2a7c7190c 1089 }
GordonSin 0:0ed2a7c7190c 1090 }
GordonSin 0:0ed2a7c7190c 1091 }
GordonSin 0:0ed2a7c7190c 1092 }
GordonSin 0:0ed2a7c7190c 1093 }
GordonSin 0:0ed2a7c7190c 1094 }
GordonSin 0:0ed2a7c7190c 1095 TCPIP_APIMSG_ACK(msg);
GordonSin 0:0ed2a7c7190c 1096 }
GordonSin 0:0ed2a7c7190c 1097 #endif /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 1098
GordonSin 0:0ed2a7c7190c 1099 /**
GordonSin 0:0ed2a7c7190c 1100 * Send some data on a RAW or UDP pcb contained in a netconn
GordonSin 0:0ed2a7c7190c 1101 * Called from netconn_send
GordonSin 0:0ed2a7c7190c 1102 *
GordonSin 0:0ed2a7c7190c 1103 * @param msg the api_msg_msg pointing to the connection
GordonSin 0:0ed2a7c7190c 1104 */
GordonSin 0:0ed2a7c7190c 1105 void
GordonSin 0:0ed2a7c7190c 1106 do_send(struct api_msg_msg *msg)
GordonSin 0:0ed2a7c7190c 1107 {
GordonSin 0:0ed2a7c7190c 1108 if (ERR_IS_FATAL(msg->conn->last_err)) {
GordonSin 0:0ed2a7c7190c 1109 msg->err = msg->conn->last_err;
GordonSin 0:0ed2a7c7190c 1110 } else {
GordonSin 0:0ed2a7c7190c 1111 msg->err = ERR_CONN;
GordonSin 0:0ed2a7c7190c 1112 if (msg->conn->pcb.tcp != NULL) {
GordonSin 0:0ed2a7c7190c 1113 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
GordonSin 0:0ed2a7c7190c 1114 #if LWIP_RAW
GordonSin 0:0ed2a7c7190c 1115 case NETCONN_RAW:
GordonSin 0:0ed2a7c7190c 1116 if (ip_addr_isany(&msg->msg.b->addr)) {
GordonSin 0:0ed2a7c7190c 1117 msg->err = raw_send(msg->conn->pcb.raw, msg->msg.b->p);
GordonSin 0:0ed2a7c7190c 1118 } else {
GordonSin 0:0ed2a7c7190c 1119 msg->err = raw_sendto(msg->conn->pcb.raw, msg->msg.b->p, &msg->msg.b->addr);
GordonSin 0:0ed2a7c7190c 1120 }
GordonSin 0:0ed2a7c7190c 1121 break;
GordonSin 0:0ed2a7c7190c 1122 #endif
GordonSin 0:0ed2a7c7190c 1123 #if LWIP_UDP
GordonSin 0:0ed2a7c7190c 1124 case NETCONN_UDP:
GordonSin 0:0ed2a7c7190c 1125 #if LWIP_CHECKSUM_ON_COPY
GordonSin 0:0ed2a7c7190c 1126 if (ip_addr_isany(&msg->msg.b->addr)) {
GordonSin 0:0ed2a7c7190c 1127 msg->err = udp_send_chksum(msg->conn->pcb.udp, msg->msg.b->p,
GordonSin 0:0ed2a7c7190c 1128 msg->msg.b->flags & NETBUF_FLAG_CHKSUM, msg->msg.b->toport_chksum);
GordonSin 0:0ed2a7c7190c 1129 } else {
GordonSin 0:0ed2a7c7190c 1130 msg->err = udp_sendto_chksum(msg->conn->pcb.udp, msg->msg.b->p,
GordonSin 0:0ed2a7c7190c 1131 &msg->msg.b->addr, msg->msg.b->port,
GordonSin 0:0ed2a7c7190c 1132 msg->msg.b->flags & NETBUF_FLAG_CHKSUM, msg->msg.b->toport_chksum);
GordonSin 0:0ed2a7c7190c 1133 }
GordonSin 0:0ed2a7c7190c 1134 #else /* LWIP_CHECKSUM_ON_COPY */
GordonSin 0:0ed2a7c7190c 1135 if (ip_addr_isany(&msg->msg.b->addr)) {
GordonSin 0:0ed2a7c7190c 1136 msg->err = udp_send(msg->conn->pcb.udp, msg->msg.b->p);
GordonSin 0:0ed2a7c7190c 1137 } else {
GordonSin 0:0ed2a7c7190c 1138 msg->err = udp_sendto(msg->conn->pcb.udp, msg->msg.b->p, &msg->msg.b->addr, msg->msg.b->port);
GordonSin 0:0ed2a7c7190c 1139 }
GordonSin 0:0ed2a7c7190c 1140 #endif /* LWIP_CHECKSUM_ON_COPY */
GordonSin 0:0ed2a7c7190c 1141 break;
GordonSin 0:0ed2a7c7190c 1142 #endif /* LWIP_UDP */
GordonSin 0:0ed2a7c7190c 1143 default:
GordonSin 0:0ed2a7c7190c 1144 break;
GordonSin 0:0ed2a7c7190c 1145 }
GordonSin 0:0ed2a7c7190c 1146 }
GordonSin 0:0ed2a7c7190c 1147 }
GordonSin 0:0ed2a7c7190c 1148 TCPIP_APIMSG_ACK(msg);
GordonSin 0:0ed2a7c7190c 1149 }
GordonSin 0:0ed2a7c7190c 1150
GordonSin 0:0ed2a7c7190c 1151 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 1152 /**
GordonSin 0:0ed2a7c7190c 1153 * Indicate data has been received from a TCP pcb contained in a netconn
GordonSin 0:0ed2a7c7190c 1154 * Called from netconn_recv
GordonSin 0:0ed2a7c7190c 1155 *
GordonSin 0:0ed2a7c7190c 1156 * @param msg the api_msg_msg pointing to the connection
GordonSin 0:0ed2a7c7190c 1157 */
GordonSin 0:0ed2a7c7190c 1158 void
GordonSin 0:0ed2a7c7190c 1159 do_recv(struct api_msg_msg *msg)
GordonSin 0:0ed2a7c7190c 1160 {
GordonSin 0:0ed2a7c7190c 1161 msg->err = ERR_OK;
GordonSin 0:0ed2a7c7190c 1162 if (msg->conn->pcb.tcp != NULL) {
GordonSin 0:0ed2a7c7190c 1163 if (msg->conn->type == NETCONN_TCP) {
GordonSin 0:0ed2a7c7190c 1164 #if TCP_LISTEN_BACKLOG
GordonSin 0:0ed2a7c7190c 1165 if (msg->conn->pcb.tcp->state == LISTEN) {
GordonSin 0:0ed2a7c7190c 1166 tcp_accepted(msg->conn->pcb.tcp);
GordonSin 0:0ed2a7c7190c 1167 } else
GordonSin 0:0ed2a7c7190c 1168 #endif /* TCP_LISTEN_BACKLOG */
GordonSin 0:0ed2a7c7190c 1169 {
GordonSin 0:0ed2a7c7190c 1170 u32_t remaining = msg->msg.r.len;
GordonSin 0:0ed2a7c7190c 1171 do {
GordonSin 0:0ed2a7c7190c 1172 u16_t recved = (remaining > 0xffff) ? 0xffff : (u16_t)remaining;
GordonSin 0:0ed2a7c7190c 1173 tcp_recved(msg->conn->pcb.tcp, recved);
GordonSin 0:0ed2a7c7190c 1174 remaining -= recved;
GordonSin 0:0ed2a7c7190c 1175 }while(remaining != 0);
GordonSin 0:0ed2a7c7190c 1176 }
GordonSin 0:0ed2a7c7190c 1177 }
GordonSin 0:0ed2a7c7190c 1178 }
GordonSin 0:0ed2a7c7190c 1179 TCPIP_APIMSG_ACK(msg);
GordonSin 0:0ed2a7c7190c 1180 }
GordonSin 0:0ed2a7c7190c 1181
GordonSin 0:0ed2a7c7190c 1182 /**
GordonSin 0:0ed2a7c7190c 1183 * See if more data needs to be written from a previous call to netconn_write.
GordonSin 0:0ed2a7c7190c 1184 * Called initially from do_write. If the first call can't send all data
GordonSin 0:0ed2a7c7190c 1185 * (because of low memory or empty send-buffer), this function is called again
GordonSin 0:0ed2a7c7190c 1186 * from sent_tcp() or poll_tcp() to send more data. If all data is sent, the
GordonSin 0:0ed2a7c7190c 1187 * blocking application thread (waiting in netconn_write) is released.
GordonSin 0:0ed2a7c7190c 1188 *
GordonSin 0:0ed2a7c7190c 1189 * @param conn netconn (that is currently in state NETCONN_WRITE) to process
GordonSin 0:0ed2a7c7190c 1190 * @return ERR_OK
GordonSin 0:0ed2a7c7190c 1191 * ERR_MEM if LWIP_TCPIP_CORE_LOCKING=1 and sending hasn't yet finished
GordonSin 0:0ed2a7c7190c 1192 */
GordonSin 0:0ed2a7c7190c 1193 static err_t
GordonSin 0:0ed2a7c7190c 1194 do_writemore(struct netconn *conn)
GordonSin 0:0ed2a7c7190c 1195 {
GordonSin 0:0ed2a7c7190c 1196 err_t err = ERR_OK;
GordonSin 0:0ed2a7c7190c 1197 void *dataptr;
GordonSin 0:0ed2a7c7190c 1198 u16_t len, available;
GordonSin 0:0ed2a7c7190c 1199 u8_t write_finished = 0;
GordonSin 0:0ed2a7c7190c 1200 size_t diff;
GordonSin 0:0ed2a7c7190c 1201 u8_t dontblock = netconn_is_nonblocking(conn) ||
GordonSin 0:0ed2a7c7190c 1202 (conn->current_msg->msg.w.apiflags & NETCONN_DONTBLOCK);
GordonSin 0:0ed2a7c7190c 1203 u8_t apiflags = conn->current_msg->msg.w.apiflags;
GordonSin 0:0ed2a7c7190c 1204
GordonSin 0:0ed2a7c7190c 1205 LWIP_ASSERT("conn != NULL", conn != NULL);
GordonSin 0:0ed2a7c7190c 1206 LWIP_ASSERT("conn->state == NETCONN_WRITE", (conn->state == NETCONN_WRITE));
GordonSin 0:0ed2a7c7190c 1207 LWIP_ASSERT("conn->current_msg != NULL", conn->current_msg != NULL);
GordonSin 0:0ed2a7c7190c 1208 LWIP_ASSERT("conn->pcb.tcp != NULL", conn->pcb.tcp != NULL);
GordonSin 0:0ed2a7c7190c 1209 LWIP_ASSERT("conn->write_offset < conn->current_msg->msg.w.len",
GordonSin 0:0ed2a7c7190c 1210 conn->write_offset < conn->current_msg->msg.w.len);
GordonSin 0:0ed2a7c7190c 1211
GordonSin 0:0ed2a7c7190c 1212 dataptr = (u8_t*)conn->current_msg->msg.w.dataptr + conn->write_offset;
GordonSin 0:0ed2a7c7190c 1213 diff = conn->current_msg->msg.w.len - conn->write_offset;
GordonSin 0:0ed2a7c7190c 1214 if (diff > 0xffffUL) { /* max_u16_t */
GordonSin 0:0ed2a7c7190c 1215 len = 0xffff;
GordonSin 0:0ed2a7c7190c 1216 #if LWIP_TCPIP_CORE_LOCKING
GordonSin 0:0ed2a7c7190c 1217 conn->flags |= NETCONN_FLAG_WRITE_DELAYED;
GordonSin 0:0ed2a7c7190c 1218 #endif
GordonSin 0:0ed2a7c7190c 1219 apiflags |= TCP_WRITE_FLAG_MORE;
GordonSin 0:0ed2a7c7190c 1220 } else {
GordonSin 0:0ed2a7c7190c 1221 len = (u16_t)diff;
GordonSin 0:0ed2a7c7190c 1222 }
GordonSin 0:0ed2a7c7190c 1223 available = tcp_sndbuf(conn->pcb.tcp);
GordonSin 0:0ed2a7c7190c 1224 if (available < len) {
GordonSin 0:0ed2a7c7190c 1225 /* don't try to write more than sendbuf */
GordonSin 0:0ed2a7c7190c 1226 len = available;
GordonSin 0:0ed2a7c7190c 1227 #if LWIP_TCPIP_CORE_LOCKING
GordonSin 0:0ed2a7c7190c 1228 conn->flags |= NETCONN_FLAG_WRITE_DELAYED;
GordonSin 0:0ed2a7c7190c 1229 #endif
GordonSin 0:0ed2a7c7190c 1230 apiflags |= TCP_WRITE_FLAG_MORE;
GordonSin 0:0ed2a7c7190c 1231 }
GordonSin 0:0ed2a7c7190c 1232 if (dontblock && (len < conn->current_msg->msg.w.len)) {
GordonSin 0:0ed2a7c7190c 1233 /* failed to send all data at once -> nonblocking write not possible */
GordonSin 0:0ed2a7c7190c 1234 err = ERR_MEM;
GordonSin 0:0ed2a7c7190c 1235 }
GordonSin 0:0ed2a7c7190c 1236 if (err == ERR_OK) {
GordonSin 0:0ed2a7c7190c 1237 LWIP_ASSERT("do_writemore: invalid length!", ((conn->write_offset + len) <= conn->current_msg->msg.w.len));
GordonSin 0:0ed2a7c7190c 1238 err = tcp_write(conn->pcb.tcp, dataptr, len, apiflags);
GordonSin 0:0ed2a7c7190c 1239 }
GordonSin 0:0ed2a7c7190c 1240 if (dontblock && (err == ERR_MEM)) {
GordonSin 0:0ed2a7c7190c 1241 /* nonblocking write failed */
GordonSin 0:0ed2a7c7190c 1242 write_finished = 1;
GordonSin 0:0ed2a7c7190c 1243 err = ERR_WOULDBLOCK;
GordonSin 0:0ed2a7c7190c 1244 /* let poll_tcp check writable space to mark the pcb
GordonSin 0:0ed2a7c7190c 1245 writable again */
GordonSin 0:0ed2a7c7190c 1246 conn->flags |= NETCONN_FLAG_CHECK_WRITESPACE;
GordonSin 0:0ed2a7c7190c 1247 /* let select mark this pcb as non-writable. */
GordonSin 0:0ed2a7c7190c 1248 API_EVENT(conn, NETCONN_EVT_SENDMINUS, len);
GordonSin 0:0ed2a7c7190c 1249 } else {
GordonSin 0:0ed2a7c7190c 1250 /* if OK or memory error, check available space */
GordonSin 0:0ed2a7c7190c 1251 if (((err == ERR_OK) || (err == ERR_MEM)) &&
GordonSin 0:0ed2a7c7190c 1252 ((tcp_sndbuf(conn->pcb.tcp) <= TCP_SNDLOWAT) ||
GordonSin 0:0ed2a7c7190c 1253 (tcp_sndqueuelen(conn->pcb.tcp) >= TCP_SNDQUEUELOWAT))) {
GordonSin 0:0ed2a7c7190c 1254 /* The queued byte- or pbuf-count exceeds the configured low-water limit,
GordonSin 0:0ed2a7c7190c 1255 let select mark this pcb as non-writable. */
GordonSin 0:0ed2a7c7190c 1256 API_EVENT(conn, NETCONN_EVT_SENDMINUS, len);
GordonSin 0:0ed2a7c7190c 1257 }
GordonSin 0:0ed2a7c7190c 1258
GordonSin 0:0ed2a7c7190c 1259 if (err == ERR_OK) {
GordonSin 0:0ed2a7c7190c 1260 conn->write_offset += len;
GordonSin 0:0ed2a7c7190c 1261 if (conn->write_offset == conn->current_msg->msg.w.len) {
GordonSin 0:0ed2a7c7190c 1262 /* everything was written */
GordonSin 0:0ed2a7c7190c 1263 write_finished = 1;
GordonSin 0:0ed2a7c7190c 1264 conn->write_offset = 0;
GordonSin 0:0ed2a7c7190c 1265 }
GordonSin 0:0ed2a7c7190c 1266 tcp_output(conn->pcb.tcp);
GordonSin 0:0ed2a7c7190c 1267 } else if (err == ERR_MEM) {
GordonSin 0:0ed2a7c7190c 1268 /* If ERR_MEM, we wait for sent_tcp or poll_tcp to be called
GordonSin 0:0ed2a7c7190c 1269 we do NOT return to the application thread, since ERR_MEM is
GordonSin 0:0ed2a7c7190c 1270 only a temporary error! */
GordonSin 0:0ed2a7c7190c 1271
GordonSin 0:0ed2a7c7190c 1272 /* tcp_write returned ERR_MEM, try tcp_output anyway */
GordonSin 0:0ed2a7c7190c 1273 tcp_output(conn->pcb.tcp);
GordonSin 0:0ed2a7c7190c 1274
GordonSin 0:0ed2a7c7190c 1275 #if LWIP_TCPIP_CORE_LOCKING
GordonSin 0:0ed2a7c7190c 1276 conn->flags |= NETCONN_FLAG_WRITE_DELAYED;
GordonSin 0:0ed2a7c7190c 1277 #endif
GordonSin 0:0ed2a7c7190c 1278 } else {
GordonSin 0:0ed2a7c7190c 1279 /* On errors != ERR_MEM, we don't try writing any more but return
GordonSin 0:0ed2a7c7190c 1280 the error to the application thread. */
GordonSin 0:0ed2a7c7190c 1281 write_finished = 1;
GordonSin 0:0ed2a7c7190c 1282 }
GordonSin 0:0ed2a7c7190c 1283 }
GordonSin 0:0ed2a7c7190c 1284
GordonSin 0:0ed2a7c7190c 1285 if (write_finished) {
GordonSin 0:0ed2a7c7190c 1286 /* everything was written: set back connection state
GordonSin 0:0ed2a7c7190c 1287 and back to application task */
GordonSin 0:0ed2a7c7190c 1288 conn->current_msg->err = err;
GordonSin 0:0ed2a7c7190c 1289 conn->current_msg = NULL;
GordonSin 0:0ed2a7c7190c 1290 conn->state = NETCONN_NONE;
GordonSin 0:0ed2a7c7190c 1291 #if LWIP_TCPIP_CORE_LOCKING
GordonSin 0:0ed2a7c7190c 1292 if ((conn->flags & NETCONN_FLAG_WRITE_DELAYED) != 0)
GordonSin 0:0ed2a7c7190c 1293 #endif
GordonSin 0:0ed2a7c7190c 1294 {
GordonSin 0:0ed2a7c7190c 1295 sys_sem_signal(&conn->op_completed);
GordonSin 0:0ed2a7c7190c 1296 }
GordonSin 0:0ed2a7c7190c 1297 }
GordonSin 0:0ed2a7c7190c 1298 #if LWIP_TCPIP_CORE_LOCKING
GordonSin 0:0ed2a7c7190c 1299 else
GordonSin 0:0ed2a7c7190c 1300 return ERR_MEM;
GordonSin 0:0ed2a7c7190c 1301 #endif
GordonSin 0:0ed2a7c7190c 1302 return ERR_OK;
GordonSin 0:0ed2a7c7190c 1303 }
GordonSin 0:0ed2a7c7190c 1304 #endif /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 1305
GordonSin 0:0ed2a7c7190c 1306 /**
GordonSin 0:0ed2a7c7190c 1307 * Send some data on a TCP pcb contained in a netconn
GordonSin 0:0ed2a7c7190c 1308 * Called from netconn_write
GordonSin 0:0ed2a7c7190c 1309 *
GordonSin 0:0ed2a7c7190c 1310 * @param msg the api_msg_msg pointing to the connection
GordonSin 0:0ed2a7c7190c 1311 */
GordonSin 0:0ed2a7c7190c 1312 void
GordonSin 0:0ed2a7c7190c 1313 do_write(struct api_msg_msg *msg)
GordonSin 0:0ed2a7c7190c 1314 {
GordonSin 0:0ed2a7c7190c 1315 if (ERR_IS_FATAL(msg->conn->last_err)) {
GordonSin 0:0ed2a7c7190c 1316 msg->err = msg->conn->last_err;
GordonSin 0:0ed2a7c7190c 1317 } else {
GordonSin 0:0ed2a7c7190c 1318 if (msg->conn->type == NETCONN_TCP) {
GordonSin 0:0ed2a7c7190c 1319 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 1320 if (msg->conn->state != NETCONN_NONE) {
GordonSin 0:0ed2a7c7190c 1321 /* netconn is connecting, closing or in blocking write */
GordonSin 0:0ed2a7c7190c 1322 msg->err = ERR_INPROGRESS;
GordonSin 0:0ed2a7c7190c 1323 } else if (msg->conn->pcb.tcp != NULL) {
GordonSin 0:0ed2a7c7190c 1324 msg->conn->state = NETCONN_WRITE;
GordonSin 0:0ed2a7c7190c 1325 /* set all the variables used by do_writemore */
GordonSin 0:0ed2a7c7190c 1326 LWIP_ASSERT("already writing or closing", msg->conn->current_msg == NULL &&
GordonSin 0:0ed2a7c7190c 1327 msg->conn->write_offset == 0);
GordonSin 0:0ed2a7c7190c 1328 LWIP_ASSERT("msg->msg.w.len != 0", msg->msg.w.len != 0);
GordonSin 0:0ed2a7c7190c 1329 msg->conn->current_msg = msg;
GordonSin 0:0ed2a7c7190c 1330 msg->conn->write_offset = 0;
GordonSin 0:0ed2a7c7190c 1331 #if LWIP_TCPIP_CORE_LOCKING
GordonSin 0:0ed2a7c7190c 1332 msg->conn->flags &= ~NETCONN_FLAG_WRITE_DELAYED;
GordonSin 0:0ed2a7c7190c 1333 if (do_writemore(msg->conn) != ERR_OK) {
GordonSin 0:0ed2a7c7190c 1334 LWIP_ASSERT("state!", msg->conn->state == NETCONN_WRITE);
GordonSin 0:0ed2a7c7190c 1335 UNLOCK_TCPIP_CORE();
GordonSin 0:0ed2a7c7190c 1336 sys_arch_sem_wait(&msg->conn->op_completed, 0);
GordonSin 0:0ed2a7c7190c 1337 LOCK_TCPIP_CORE();
GordonSin 0:0ed2a7c7190c 1338 LWIP_ASSERT("state!", msg->conn->state == NETCONN_NONE);
GordonSin 0:0ed2a7c7190c 1339 }
GordonSin 0:0ed2a7c7190c 1340 #else /* LWIP_TCPIP_CORE_LOCKING */
GordonSin 0:0ed2a7c7190c 1341 do_writemore(msg->conn);
GordonSin 0:0ed2a7c7190c 1342 #endif /* LWIP_TCPIP_CORE_LOCKING */
GordonSin 0:0ed2a7c7190c 1343 /* for both cases: if do_writemore was called, don't ACK the APIMSG
GordonSin 0:0ed2a7c7190c 1344 since do_writemore ACKs it! */
GordonSin 0:0ed2a7c7190c 1345 return;
GordonSin 0:0ed2a7c7190c 1346 } else {
GordonSin 0:0ed2a7c7190c 1347 msg->err = ERR_CONN;
GordonSin 0:0ed2a7c7190c 1348 }
GordonSin 0:0ed2a7c7190c 1349 #else /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 1350 msg->err = ERR_VAL;
GordonSin 0:0ed2a7c7190c 1351 #endif /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 1352 #if (LWIP_UDP || LWIP_RAW)
GordonSin 0:0ed2a7c7190c 1353 } else {
GordonSin 0:0ed2a7c7190c 1354 msg->err = ERR_VAL;
GordonSin 0:0ed2a7c7190c 1355 #endif /* (LWIP_UDP || LWIP_RAW) */
GordonSin 0:0ed2a7c7190c 1356 }
GordonSin 0:0ed2a7c7190c 1357 }
GordonSin 0:0ed2a7c7190c 1358 TCPIP_APIMSG_ACK(msg);
GordonSin 0:0ed2a7c7190c 1359 }
GordonSin 0:0ed2a7c7190c 1360
GordonSin 0:0ed2a7c7190c 1361 /**
GordonSin 0:0ed2a7c7190c 1362 * Return a connection's local or remote address
GordonSin 0:0ed2a7c7190c 1363 * Called from netconn_getaddr
GordonSin 0:0ed2a7c7190c 1364 *
GordonSin 0:0ed2a7c7190c 1365 * @param msg the api_msg_msg pointing to the connection
GordonSin 0:0ed2a7c7190c 1366 */
GordonSin 0:0ed2a7c7190c 1367 void
GordonSin 0:0ed2a7c7190c 1368 do_getaddr(struct api_msg_msg *msg)
GordonSin 0:0ed2a7c7190c 1369 {
GordonSin 0:0ed2a7c7190c 1370 if (msg->conn->pcb.ip != NULL) {
GordonSin 0:0ed2a7c7190c 1371 *(msg->msg.ad.ipaddr) = (msg->msg.ad.local ? msg->conn->pcb.ip->local_ip :
GordonSin 0:0ed2a7c7190c 1372 msg->conn->pcb.ip->remote_ip);
GordonSin 0:0ed2a7c7190c 1373
GordonSin 0:0ed2a7c7190c 1374 msg->err = ERR_OK;
GordonSin 0:0ed2a7c7190c 1375 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
GordonSin 0:0ed2a7c7190c 1376 #if LWIP_RAW
GordonSin 0:0ed2a7c7190c 1377 case NETCONN_RAW:
GordonSin 0:0ed2a7c7190c 1378 if (msg->msg.ad.local) {
GordonSin 0:0ed2a7c7190c 1379 *(msg->msg.ad.port) = msg->conn->pcb.raw->protocol;
GordonSin 0:0ed2a7c7190c 1380 } else {
GordonSin 0:0ed2a7c7190c 1381 /* return an error as connecting is only a helper for upper layers */
GordonSin 0:0ed2a7c7190c 1382 msg->err = ERR_CONN;
GordonSin 0:0ed2a7c7190c 1383 }
GordonSin 0:0ed2a7c7190c 1384 break;
GordonSin 0:0ed2a7c7190c 1385 #endif /* LWIP_RAW */
GordonSin 0:0ed2a7c7190c 1386 #if LWIP_UDP
GordonSin 0:0ed2a7c7190c 1387 case NETCONN_UDP:
GordonSin 0:0ed2a7c7190c 1388 if (msg->msg.ad.local) {
GordonSin 0:0ed2a7c7190c 1389 *(msg->msg.ad.port) = msg->conn->pcb.udp->local_port;
GordonSin 0:0ed2a7c7190c 1390 } else {
GordonSin 0:0ed2a7c7190c 1391 if ((msg->conn->pcb.udp->flags & UDP_FLAGS_CONNECTED) == 0) {
GordonSin 0:0ed2a7c7190c 1392 msg->err = ERR_CONN;
GordonSin 0:0ed2a7c7190c 1393 } else {
GordonSin 0:0ed2a7c7190c 1394 *(msg->msg.ad.port) = msg->conn->pcb.udp->remote_port;
GordonSin 0:0ed2a7c7190c 1395 }
GordonSin 0:0ed2a7c7190c 1396 }
GordonSin 0:0ed2a7c7190c 1397 break;
GordonSin 0:0ed2a7c7190c 1398 #endif /* LWIP_UDP */
GordonSin 0:0ed2a7c7190c 1399 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 1400 case NETCONN_TCP:
GordonSin 0:0ed2a7c7190c 1401 *(msg->msg.ad.port) = (msg->msg.ad.local?msg->conn->pcb.tcp->local_port:msg->conn->pcb.tcp->remote_port);
GordonSin 0:0ed2a7c7190c 1402 break;
GordonSin 0:0ed2a7c7190c 1403 #endif /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 1404 default:
GordonSin 0:0ed2a7c7190c 1405 LWIP_ASSERT("invalid netconn_type", 0);
GordonSin 0:0ed2a7c7190c 1406 break;
GordonSin 0:0ed2a7c7190c 1407 }
GordonSin 0:0ed2a7c7190c 1408 } else {
GordonSin 0:0ed2a7c7190c 1409 msg->err = ERR_CONN;
GordonSin 0:0ed2a7c7190c 1410 }
GordonSin 0:0ed2a7c7190c 1411 TCPIP_APIMSG_ACK(msg);
GordonSin 0:0ed2a7c7190c 1412 }
GordonSin 0:0ed2a7c7190c 1413
GordonSin 0:0ed2a7c7190c 1414 /**
GordonSin 0:0ed2a7c7190c 1415 * Close a TCP pcb contained in a netconn
GordonSin 0:0ed2a7c7190c 1416 * Called from netconn_close
GordonSin 0:0ed2a7c7190c 1417 *
GordonSin 0:0ed2a7c7190c 1418 * @param msg the api_msg_msg pointing to the connection
GordonSin 0:0ed2a7c7190c 1419 */
GordonSin 0:0ed2a7c7190c 1420 void
GordonSin 0:0ed2a7c7190c 1421 do_close(struct api_msg_msg *msg)
GordonSin 0:0ed2a7c7190c 1422 {
GordonSin 0:0ed2a7c7190c 1423 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 1424 /* @todo: abort running write/connect? */
GordonSin 0:0ed2a7c7190c 1425 if ((msg->conn->state != NETCONN_NONE) && (msg->conn->state != NETCONN_LISTEN)) {
GordonSin 0:0ed2a7c7190c 1426 /* this only happens for TCP netconns */
GordonSin 0:0ed2a7c7190c 1427 LWIP_ASSERT("msg->conn->type == NETCONN_TCP", msg->conn->type == NETCONN_TCP);
GordonSin 0:0ed2a7c7190c 1428 msg->err = ERR_INPROGRESS;
GordonSin 0:0ed2a7c7190c 1429 } else if ((msg->conn->pcb.tcp != NULL) && (msg->conn->type == NETCONN_TCP)) {
GordonSin 0:0ed2a7c7190c 1430 if ((msg->msg.sd.shut != NETCONN_SHUT_RDWR) && (msg->conn->state == NETCONN_LISTEN)) {
GordonSin 0:0ed2a7c7190c 1431 /* LISTEN doesn't support half shutdown */
GordonSin 0:0ed2a7c7190c 1432 msg->err = ERR_CONN;
GordonSin 0:0ed2a7c7190c 1433 } else {
GordonSin 0:0ed2a7c7190c 1434 if (msg->msg.sd.shut & NETCONN_SHUT_RD) {
GordonSin 0:0ed2a7c7190c 1435 /* Drain and delete mboxes */
GordonSin 0:0ed2a7c7190c 1436 netconn_drain(msg->conn);
GordonSin 0:0ed2a7c7190c 1437 }
GordonSin 0:0ed2a7c7190c 1438 LWIP_ASSERT("already writing or closing", msg->conn->current_msg == NULL &&
GordonSin 0:0ed2a7c7190c 1439 msg->conn->write_offset == 0);
GordonSin 0:0ed2a7c7190c 1440 msg->conn->state = NETCONN_CLOSE;
GordonSin 0:0ed2a7c7190c 1441 msg->conn->current_msg = msg;
GordonSin 0:0ed2a7c7190c 1442 do_close_internal(msg->conn);
GordonSin 0:0ed2a7c7190c 1443 /* for tcp netconns, do_close_internal ACKs the message */
GordonSin 0:0ed2a7c7190c 1444 return;
GordonSin 0:0ed2a7c7190c 1445 }
GordonSin 0:0ed2a7c7190c 1446 } else
GordonSin 0:0ed2a7c7190c 1447 #endif /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 1448 {
GordonSin 0:0ed2a7c7190c 1449 msg->err = ERR_VAL;
GordonSin 0:0ed2a7c7190c 1450 }
GordonSin 0:0ed2a7c7190c 1451 sys_sem_signal(&msg->conn->op_completed);
GordonSin 0:0ed2a7c7190c 1452 }
GordonSin 0:0ed2a7c7190c 1453
GordonSin 0:0ed2a7c7190c 1454 #if LWIP_IGMP
GordonSin 0:0ed2a7c7190c 1455 /**
GordonSin 0:0ed2a7c7190c 1456 * Join multicast groups for UDP netconns.
GordonSin 0:0ed2a7c7190c 1457 * Called from netconn_join_leave_group
GordonSin 0:0ed2a7c7190c 1458 *
GordonSin 0:0ed2a7c7190c 1459 * @param msg the api_msg_msg pointing to the connection
GordonSin 0:0ed2a7c7190c 1460 */
GordonSin 0:0ed2a7c7190c 1461 void
GordonSin 0:0ed2a7c7190c 1462 do_join_leave_group(struct api_msg_msg *msg)
GordonSin 0:0ed2a7c7190c 1463 {
GordonSin 0:0ed2a7c7190c 1464 if (ERR_IS_FATAL(msg->conn->last_err)) {
GordonSin 0:0ed2a7c7190c 1465 msg->err = msg->conn->last_err;
GordonSin 0:0ed2a7c7190c 1466 } else {
GordonSin 0:0ed2a7c7190c 1467 if (msg->conn->pcb.tcp != NULL) {
GordonSin 0:0ed2a7c7190c 1468 if (NETCONNTYPE_GROUP(msg->conn->type) == NETCONN_UDP) {
GordonSin 0:0ed2a7c7190c 1469 #if LWIP_UDP
GordonSin 0:0ed2a7c7190c 1470 if (msg->msg.jl.join_or_leave == NETCONN_JOIN) {
GordonSin 0:0ed2a7c7190c 1471 msg->err = igmp_joingroup(msg->msg.jl.netif_addr, msg->msg.jl.multiaddr);
GordonSin 0:0ed2a7c7190c 1472 } else {
GordonSin 0:0ed2a7c7190c 1473 msg->err = igmp_leavegroup(msg->msg.jl.netif_addr, msg->msg.jl.multiaddr);
GordonSin 0:0ed2a7c7190c 1474 }
GordonSin 0:0ed2a7c7190c 1475 #endif /* LWIP_UDP */
GordonSin 0:0ed2a7c7190c 1476 #if (LWIP_TCP || LWIP_RAW)
GordonSin 0:0ed2a7c7190c 1477 } else {
GordonSin 0:0ed2a7c7190c 1478 msg->err = ERR_VAL;
GordonSin 0:0ed2a7c7190c 1479 #endif /* (LWIP_TCP || LWIP_RAW) */
GordonSin 0:0ed2a7c7190c 1480 }
GordonSin 0:0ed2a7c7190c 1481 } else {
GordonSin 0:0ed2a7c7190c 1482 msg->err = ERR_CONN;
GordonSin 0:0ed2a7c7190c 1483 }
GordonSin 0:0ed2a7c7190c 1484 }
GordonSin 0:0ed2a7c7190c 1485 TCPIP_APIMSG_ACK(msg);
GordonSin 0:0ed2a7c7190c 1486 }
GordonSin 0:0ed2a7c7190c 1487 #endif /* LWIP_IGMP */
GordonSin 0:0ed2a7c7190c 1488
GordonSin 0:0ed2a7c7190c 1489 #if LWIP_DNS
GordonSin 0:0ed2a7c7190c 1490 /**
GordonSin 0:0ed2a7c7190c 1491 * Callback function that is called when DNS name is resolved
GordonSin 0:0ed2a7c7190c 1492 * (or on timeout). A waiting application thread is waked up by
GordonSin 0:0ed2a7c7190c 1493 * signaling the semaphore.
GordonSin 0:0ed2a7c7190c 1494 */
GordonSin 0:0ed2a7c7190c 1495 static void
GordonSin 0:0ed2a7c7190c 1496 do_dns_found(const char *name, ip_addr_t *ipaddr, void *arg)
GordonSin 0:0ed2a7c7190c 1497 {
GordonSin 0:0ed2a7c7190c 1498 struct dns_api_msg *msg = (struct dns_api_msg*)arg;
GordonSin 0:0ed2a7c7190c 1499
GordonSin 0:0ed2a7c7190c 1500 LWIP_ASSERT("DNS response for wrong host name", strcmp(msg->name, name) == 0);
GordonSin 0:0ed2a7c7190c 1501 LWIP_UNUSED_ARG(name);
GordonSin 0:0ed2a7c7190c 1502
GordonSin 0:0ed2a7c7190c 1503 if (ipaddr == NULL) {
GordonSin 0:0ed2a7c7190c 1504 /* timeout or memory error */
GordonSin 0:0ed2a7c7190c 1505 *msg->err = ERR_VAL;
GordonSin 0:0ed2a7c7190c 1506 } else {
GordonSin 0:0ed2a7c7190c 1507 /* address was resolved */
GordonSin 0:0ed2a7c7190c 1508 *msg->err = ERR_OK;
GordonSin 0:0ed2a7c7190c 1509 *msg->addr = *ipaddr;
GordonSin 0:0ed2a7c7190c 1510 }
GordonSin 0:0ed2a7c7190c 1511 /* wake up the application task waiting in netconn_gethostbyname */
GordonSin 0:0ed2a7c7190c 1512 sys_sem_signal(msg->sem);
GordonSin 0:0ed2a7c7190c 1513 }
GordonSin 0:0ed2a7c7190c 1514
GordonSin 0:0ed2a7c7190c 1515 /**
GordonSin 0:0ed2a7c7190c 1516 * Execute a DNS query
GordonSin 0:0ed2a7c7190c 1517 * Called from netconn_gethostbyname
GordonSin 0:0ed2a7c7190c 1518 *
GordonSin 0:0ed2a7c7190c 1519 * @param arg the dns_api_msg pointing to the query
GordonSin 0:0ed2a7c7190c 1520 */
GordonSin 0:0ed2a7c7190c 1521 void
GordonSin 0:0ed2a7c7190c 1522 do_gethostbyname(void *arg)
GordonSin 0:0ed2a7c7190c 1523 {
GordonSin 0:0ed2a7c7190c 1524 struct dns_api_msg *msg = (struct dns_api_msg*)arg;
GordonSin 0:0ed2a7c7190c 1525
GordonSin 0:0ed2a7c7190c 1526 *msg->err = dns_gethostbyname(msg->name, msg->addr, do_dns_found, msg);
GordonSin 0:0ed2a7c7190c 1527 if (*msg->err != ERR_INPROGRESS) {
GordonSin 0:0ed2a7c7190c 1528 /* on error or immediate success, wake up the application
GordonSin 0:0ed2a7c7190c 1529 * task waiting in netconn_gethostbyname */
GordonSin 0:0ed2a7c7190c 1530 sys_sem_signal(msg->sem);
GordonSin 0:0ed2a7c7190c 1531 }
GordonSin 0:0ed2a7c7190c 1532 }
GordonSin 0:0ed2a7c7190c 1533 #endif /* LWIP_DNS */
GordonSin 0:0ed2a7c7190c 1534
GordonSin 0:0ed2a7c7190c 1535 #endif /* LWIP_NETCONN */