Adam Green / EthernetInterface

Deprecated fork of old network stack source from github. Please use official library instead: https://mbed.org/users/mbed_official/code/EthernetInterface/

lwip/api/api_msg.c@1:eadc868c2acf, 2013-10-26 (annotated)

Committer:
AdamGreen
Date:
Sat Oct 26 08:51:36 2013 +0000
Revision:
1:eadc868c2acf
Parent:
0:3b00827bb0b7 
Fix TCP checksum bug and stranded large TCP segments.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AdamGreen 0:3b00827bb0b7 1 /**
AdamGreen 0:3b00827bb0b7 2 * @file
AdamGreen 0:3b00827bb0b7 3 * Sequential API Internal module
AdamGreen 0:3b00827bb0b7 4 *
AdamGreen 0:3b00827bb0b7 5 */
AdamGreen 0:3b00827bb0b7 6
AdamGreen 0:3b00827bb0b7 7 /*
AdamGreen 0:3b00827bb0b7 8 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
AdamGreen 0:3b00827bb0b7 9 * All rights reserved.
AdamGreen 0:3b00827bb0b7 10 *
AdamGreen 0:3b00827bb0b7 11 * Redistribution and use in source and binary forms, with or without modification,
AdamGreen 0:3b00827bb0b7 12 * are permitted provided that the following conditions are met:
AdamGreen 0:3b00827bb0b7 13 *
AdamGreen 0:3b00827bb0b7 14 * 1. Redistributions of source code must retain the above copyright notice,
AdamGreen 0:3b00827bb0b7 15 * this list of conditions and the following disclaimer.
AdamGreen 0:3b00827bb0b7 16 * 2. Redistributions in binary form must reproduce the above copyright notice,
AdamGreen 0:3b00827bb0b7 17 * this list of conditions and the following disclaimer in the documentation
AdamGreen 0:3b00827bb0b7 18 * and/or other materials provided with the distribution.
AdamGreen 0:3b00827bb0b7 19 * 3. The name of the author may not be used to endorse or promote products
AdamGreen 0:3b00827bb0b7 20 * derived from this software without specific prior written permission.
AdamGreen 0:3b00827bb0b7 21 *
AdamGreen 0:3b00827bb0b7 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
AdamGreen 0:3b00827bb0b7 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
AdamGreen 0:3b00827bb0b7 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
AdamGreen 0:3b00827bb0b7 25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
AdamGreen 0:3b00827bb0b7 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
AdamGreen 0:3b00827bb0b7 27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
AdamGreen 0:3b00827bb0b7 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
AdamGreen 0:3b00827bb0b7 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
AdamGreen 0:3b00827bb0b7 30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
AdamGreen 0:3b00827bb0b7 31 * OF SUCH DAMAGE.
AdamGreen 0:3b00827bb0b7 32 *
AdamGreen 0:3b00827bb0b7 33 * This file is part of the lwIP TCP/IP stack.
AdamGreen 0:3b00827bb0b7 34 *
AdamGreen 0:3b00827bb0b7 35 * Author: Adam Dunkels <adam@sics.se>
AdamGreen 0:3b00827bb0b7 36 *
AdamGreen 0:3b00827bb0b7 37 */
AdamGreen 0:3b00827bb0b7 38
AdamGreen 0:3b00827bb0b7 39 #include "lwip/opt.h"
AdamGreen 0:3b00827bb0b7 40
AdamGreen 0:3b00827bb0b7 41 #if LWIP_NETCONN /* don't build if not configured for use in lwipopts.h */
AdamGreen 0:3b00827bb0b7 42
AdamGreen 0:3b00827bb0b7 43 #include "lwip/api_msg.h"
AdamGreen 0:3b00827bb0b7 44
AdamGreen 0:3b00827bb0b7 45 #include "lwip/ip.h"
AdamGreen 0:3b00827bb0b7 46 #include "lwip/udp.h"
AdamGreen 0:3b00827bb0b7 47 #include "lwip/tcp.h"
AdamGreen 0:3b00827bb0b7 48 #include "lwip/raw.h"
AdamGreen 0:3b00827bb0b7 49
AdamGreen 0:3b00827bb0b7 50 #include "lwip/memp.h"
AdamGreen 0:3b00827bb0b7 51 #include "lwip/tcpip.h"
AdamGreen 0:3b00827bb0b7 52 #include "lwip/igmp.h"
AdamGreen 0:3b00827bb0b7 53 #include "lwip/dns.h"
AdamGreen 0:3b00827bb0b7 54
AdamGreen 0:3b00827bb0b7 55 #include <string.h>
AdamGreen 0:3b00827bb0b7 56
AdamGreen 0:3b00827bb0b7 57 #define SET_NONBLOCKING_CONNECT(conn, val) do { if(val) { \
AdamGreen 0:3b00827bb0b7 58 (conn)->flags |= NETCONN_FLAG_IN_NONBLOCKING_CONNECT; \
AdamGreen 0:3b00827bb0b7 59 } else { \
AdamGreen 0:3b00827bb0b7 60 (conn)->flags &= ~ NETCONN_FLAG_IN_NONBLOCKING_CONNECT; }} while(0)
AdamGreen 0:3b00827bb0b7 61 #define IN_NONBLOCKING_CONNECT(conn) (((conn)->flags & NETCONN_FLAG_IN_NONBLOCKING_CONNECT) != 0)
AdamGreen 0:3b00827bb0b7 62
AdamGreen 0:3b00827bb0b7 63 /* forward declarations */
AdamGreen 0:3b00827bb0b7 64 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 65 static err_t do_writemore(struct netconn *conn);
AdamGreen 0:3b00827bb0b7 66 static void do_close_internal(struct netconn *conn);
AdamGreen 0:3b00827bb0b7 67 #endif
AdamGreen 0:3b00827bb0b7 68
AdamGreen 0:3b00827bb0b7 69 #if LWIP_RAW
AdamGreen 0:3b00827bb0b7 70 /**
AdamGreen 0:3b00827bb0b7 71 * Receive callback function for RAW netconns.
AdamGreen 0:3b00827bb0b7 72 * Doesn't 'eat' the packet, only references it and sends it to
AdamGreen 0:3b00827bb0b7 73 * conn->recvmbox
AdamGreen 0:3b00827bb0b7 74 *
AdamGreen 0:3b00827bb0b7 75 * @see raw.h (struct raw_pcb.recv) for parameters and return value
AdamGreen 0:3b00827bb0b7 76 */
AdamGreen 0:3b00827bb0b7 77 static u8_t
AdamGreen 0:3b00827bb0b7 78 recv_raw(void *arg, struct raw_pcb *pcb, struct pbuf *p,
AdamGreen 0:3b00827bb0b7 79 ip_addr_t *addr)
AdamGreen 0:3b00827bb0b7 80 {
AdamGreen 0:3b00827bb0b7 81 struct pbuf *q;
AdamGreen 0:3b00827bb0b7 82 struct netbuf *buf;
AdamGreen 0:3b00827bb0b7 83 struct netconn *conn;
AdamGreen 0:3b00827bb0b7 84
AdamGreen 0:3b00827bb0b7 85 LWIP_UNUSED_ARG(addr);
AdamGreen 0:3b00827bb0b7 86 conn = (struct netconn *)arg;
AdamGreen 0:3b00827bb0b7 87
AdamGreen 0:3b00827bb0b7 88 if ((conn != NULL) && sys_mbox_valid(&conn->recvmbox)) {
AdamGreen 0:3b00827bb0b7 89 #if LWIP_SO_RCVBUF
AdamGreen 0:3b00827bb0b7 90 int recv_avail;
AdamGreen 0:3b00827bb0b7 91 SYS_ARCH_GET(conn->recv_avail, recv_avail);
AdamGreen 0:3b00827bb0b7 92 if ((recv_avail + (int)(p->tot_len)) > conn->recv_bufsize) {
AdamGreen 0:3b00827bb0b7 93 return 0;
AdamGreen 0:3b00827bb0b7 94 }
AdamGreen 0:3b00827bb0b7 95 #endif /* LWIP_SO_RCVBUF */
AdamGreen 0:3b00827bb0b7 96 /* copy the whole packet into new pbufs */
AdamGreen 0:3b00827bb0b7 97 q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
AdamGreen 0:3b00827bb0b7 98 if(q != NULL) {
AdamGreen 0:3b00827bb0b7 99 if (pbuf_copy(q, p) != ERR_OK) {
AdamGreen 0:3b00827bb0b7 100 pbuf_free(q);
AdamGreen 0:3b00827bb0b7 101 q = NULL;
AdamGreen 0:3b00827bb0b7 102 }
AdamGreen 0:3b00827bb0b7 103 }
AdamGreen 0:3b00827bb0b7 104
AdamGreen 0:3b00827bb0b7 105 if (q != NULL) {
AdamGreen 0:3b00827bb0b7 106 u16_t len;
AdamGreen 0:3b00827bb0b7 107 buf = (struct netbuf *)memp_malloc(MEMP_NETBUF);
AdamGreen 0:3b00827bb0b7 108 if (buf == NULL) {
AdamGreen 0:3b00827bb0b7 109 pbuf_free(q);
AdamGreen 0:3b00827bb0b7 110 return 0;
AdamGreen 0:3b00827bb0b7 111 }
AdamGreen 0:3b00827bb0b7 112
AdamGreen 0:3b00827bb0b7 113 buf->p = q;
AdamGreen 0:3b00827bb0b7 114 buf->ptr = q;
AdamGreen 0:3b00827bb0b7 115 ip_addr_copy(buf->addr, *ip_current_src_addr());
AdamGreen 0:3b00827bb0b7 116 buf->port = pcb->protocol;
AdamGreen 0:3b00827bb0b7 117
AdamGreen 0:3b00827bb0b7 118 len = q->tot_len;
AdamGreen 0:3b00827bb0b7 119 if (sys_mbox_trypost(&conn->recvmbox, buf) != ERR_OK) {
AdamGreen 0:3b00827bb0b7 120 netbuf_delete(buf);
AdamGreen 0:3b00827bb0b7 121 return 0;
AdamGreen 0:3b00827bb0b7 122 } else {
AdamGreen 0:3b00827bb0b7 123 #if LWIP_SO_RCVBUF
AdamGreen 0:3b00827bb0b7 124 SYS_ARCH_INC(conn->recv_avail, len);
AdamGreen 0:3b00827bb0b7 125 #endif /* LWIP_SO_RCVBUF */
AdamGreen 0:3b00827bb0b7 126 /* Register event with callback */
AdamGreen 0:3b00827bb0b7 127 API_EVENT(conn, NETCONN_EVT_RCVPLUS, len);
AdamGreen 0:3b00827bb0b7 128 }
AdamGreen 0:3b00827bb0b7 129 }
AdamGreen 0:3b00827bb0b7 130 }
AdamGreen 0:3b00827bb0b7 131
AdamGreen 0:3b00827bb0b7 132 return 0; /* do not eat the packet */
AdamGreen 0:3b00827bb0b7 133 }
AdamGreen 0:3b00827bb0b7 134 #endif /* LWIP_RAW*/
AdamGreen 0:3b00827bb0b7 135
AdamGreen 0:3b00827bb0b7 136 #if LWIP_UDP
AdamGreen 0:3b00827bb0b7 137 /**
AdamGreen 0:3b00827bb0b7 138 * Receive callback function for UDP netconns.
AdamGreen 0:3b00827bb0b7 139 * Posts the packet to conn->recvmbox or deletes it on memory error.
AdamGreen 0:3b00827bb0b7 140 *
AdamGreen 0:3b00827bb0b7 141 * @see udp.h (struct udp_pcb.recv) for parameters
AdamGreen 0:3b00827bb0b7 142 */
AdamGreen 0:3b00827bb0b7 143 static void
AdamGreen 0:3b00827bb0b7 144 recv_udp(void *arg, struct udp_pcb *pcb, struct pbuf *p,
AdamGreen 0:3b00827bb0b7 145 ip_addr_t *addr, u16_t port)
AdamGreen 0:3b00827bb0b7 146 {
AdamGreen 0:3b00827bb0b7 147 struct netbuf *buf;
AdamGreen 0:3b00827bb0b7 148 struct netconn *conn;
AdamGreen 0:3b00827bb0b7 149 u16_t len;
AdamGreen 0:3b00827bb0b7 150 #if LWIP_SO_RCVBUF
AdamGreen 0:3b00827bb0b7 151 int recv_avail;
AdamGreen 0:3b00827bb0b7 152 #endif /* LWIP_SO_RCVBUF */
AdamGreen 0:3b00827bb0b7 153
AdamGreen 0:3b00827bb0b7 154 LWIP_UNUSED_ARG(pcb); /* only used for asserts... */
AdamGreen 0:3b00827bb0b7 155 LWIP_ASSERT("recv_udp must have a pcb argument", pcb != NULL);
AdamGreen 0:3b00827bb0b7 156 LWIP_ASSERT("recv_udp must have an argument", arg != NULL);
AdamGreen 0:3b00827bb0b7 157 conn = (struct netconn *)arg;
AdamGreen 0:3b00827bb0b7 158 LWIP_ASSERT("recv_udp: recv for wrong pcb!", conn->pcb.udp == pcb);
AdamGreen 0:3b00827bb0b7 159
AdamGreen 0:3b00827bb0b7 160 #if LWIP_SO_RCVBUF
AdamGreen 0:3b00827bb0b7 161 SYS_ARCH_GET(conn->recv_avail, recv_avail);
AdamGreen 0:3b00827bb0b7 162 if ((conn == NULL) || !sys_mbox_valid(&conn->recvmbox) ||
AdamGreen 0:3b00827bb0b7 163 ((recv_avail + (int)(p->tot_len)) > conn->recv_bufsize)) {
AdamGreen 0:3b00827bb0b7 164 #else /* LWIP_SO_RCVBUF */
AdamGreen 0:3b00827bb0b7 165 if ((conn == NULL) || !sys_mbox_valid(&conn->recvmbox)) {
AdamGreen 0:3b00827bb0b7 166 #endif /* LWIP_SO_RCVBUF */
AdamGreen 0:3b00827bb0b7 167 pbuf_free(p);
AdamGreen 0:3b00827bb0b7 168 return;
AdamGreen 0:3b00827bb0b7 169 }
AdamGreen 0:3b00827bb0b7 170
AdamGreen 0:3b00827bb0b7 171 buf = (struct netbuf *)memp_malloc(MEMP_NETBUF);
AdamGreen 0:3b00827bb0b7 172 if (buf == NULL) {
AdamGreen 0:3b00827bb0b7 173 pbuf_free(p);
AdamGreen 0:3b00827bb0b7 174 return;
AdamGreen 0:3b00827bb0b7 175 } else {
AdamGreen 0:3b00827bb0b7 176 buf->p = p;
AdamGreen 0:3b00827bb0b7 177 buf->ptr = p;
AdamGreen 0:3b00827bb0b7 178 ip_addr_set(&buf->addr, addr);
AdamGreen 0:3b00827bb0b7 179 buf->port = port;
AdamGreen 0:3b00827bb0b7 180 #if LWIP_NETBUF_RECVINFO
AdamGreen 0:3b00827bb0b7 181 {
AdamGreen 0:3b00827bb0b7 182 const struct ip_hdr* iphdr = ip_current_header();
AdamGreen 0:3b00827bb0b7 183 /* get the UDP header - always in the first pbuf, ensured by udp_input */
AdamGreen 0:3b00827bb0b7 184 const struct udp_hdr* udphdr = (void*)(((char*)iphdr) + IPH_LEN(iphdr));
AdamGreen 0:3b00827bb0b7 185 #if LWIP_CHECKSUM_ON_COPY
AdamGreen 0:3b00827bb0b7 186 buf->flags = NETBUF_FLAG_DESTADDR;
AdamGreen 0:3b00827bb0b7 187 #endif /* LWIP_CHECKSUM_ON_COPY */
AdamGreen 0:3b00827bb0b7 188 ip_addr_set(&buf->toaddr, ip_current_dest_addr());
AdamGreen 0:3b00827bb0b7 189 buf->toport_chksum = udphdr->dest;
AdamGreen 0:3b00827bb0b7 190 }
AdamGreen 0:3b00827bb0b7 191 #endif /* LWIP_NETBUF_RECVINFO */
AdamGreen 0:3b00827bb0b7 192 }
AdamGreen 0:3b00827bb0b7 193
AdamGreen 0:3b00827bb0b7 194 len = p->tot_len;
AdamGreen 0:3b00827bb0b7 195 if (sys_mbox_trypost(&conn->recvmbox, buf) != ERR_OK) {
AdamGreen 0:3b00827bb0b7 196 netbuf_delete(buf);
AdamGreen 0:3b00827bb0b7 197 return;
AdamGreen 0:3b00827bb0b7 198 } else {
AdamGreen 0:3b00827bb0b7 199 #if LWIP_SO_RCVBUF
AdamGreen 0:3b00827bb0b7 200 SYS_ARCH_INC(conn->recv_avail, len);
AdamGreen 0:3b00827bb0b7 201 #endif /* LWIP_SO_RCVBUF */
AdamGreen 0:3b00827bb0b7 202 /* Register event with callback */
AdamGreen 0:3b00827bb0b7 203 API_EVENT(conn, NETCONN_EVT_RCVPLUS, len);
AdamGreen 0:3b00827bb0b7 204 }
AdamGreen 0:3b00827bb0b7 205 }
AdamGreen 0:3b00827bb0b7 206 #endif /* LWIP_UDP */
AdamGreen 0:3b00827bb0b7 207
AdamGreen 0:3b00827bb0b7 208 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 209 /**
AdamGreen 0:3b00827bb0b7 210 * Receive callback function for TCP netconns.
AdamGreen 0:3b00827bb0b7 211 * Posts the packet to conn->recvmbox, but doesn't delete it on errors.
AdamGreen 0:3b00827bb0b7 212 *
AdamGreen 0:3b00827bb0b7 213 * @see tcp.h (struct tcp_pcb.recv) for parameters and return value
AdamGreen 0:3b00827bb0b7 214 */
AdamGreen 0:3b00827bb0b7 215 static err_t
AdamGreen 0:3b00827bb0b7 216 recv_tcp(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err)
AdamGreen 0:3b00827bb0b7 217 {
AdamGreen 0:3b00827bb0b7 218 struct netconn *conn;
AdamGreen 0:3b00827bb0b7 219 u16_t len;
AdamGreen 0:3b00827bb0b7 220
AdamGreen 0:3b00827bb0b7 221 LWIP_UNUSED_ARG(pcb);
AdamGreen 0:3b00827bb0b7 222 LWIP_ASSERT("recv_tcp must have a pcb argument", pcb != NULL);
AdamGreen 0:3b00827bb0b7 223 LWIP_ASSERT("recv_tcp must have an argument", arg != NULL);
AdamGreen 0:3b00827bb0b7 224 conn = (struct netconn *)arg;
AdamGreen 0:3b00827bb0b7 225 LWIP_ASSERT("recv_tcp: recv for wrong pcb!", conn->pcb.tcp == pcb);
AdamGreen 0:3b00827bb0b7 226
AdamGreen 0:3b00827bb0b7 227 if (conn == NULL) {
AdamGreen 0:3b00827bb0b7 228 return ERR_VAL;
AdamGreen 0:3b00827bb0b7 229 }
AdamGreen 0:3b00827bb0b7 230 if (!sys_mbox_valid(&conn->recvmbox)) {
AdamGreen 0:3b00827bb0b7 231 /* recvmbox already deleted */
AdamGreen 0:3b00827bb0b7 232 if (p != NULL) {
AdamGreen 0:3b00827bb0b7 233 tcp_recved(pcb, p->tot_len);
AdamGreen 0:3b00827bb0b7 234 pbuf_free(p);
AdamGreen 0:3b00827bb0b7 235 }
AdamGreen 0:3b00827bb0b7 236 return ERR_OK;
AdamGreen 0:3b00827bb0b7 237 }
AdamGreen 0:3b00827bb0b7 238 /* Unlike for UDP or RAW pcbs, don't check for available space
AdamGreen 0:3b00827bb0b7 239 using recv_avail since that could break the connection
AdamGreen 0:3b00827bb0b7 240 (data is already ACKed) */
AdamGreen 0:3b00827bb0b7 241
AdamGreen 0:3b00827bb0b7 242 /* don't overwrite fatal errors! */
AdamGreen 0:3b00827bb0b7 243 NETCONN_SET_SAFE_ERR(conn, err);
AdamGreen 0:3b00827bb0b7 244
AdamGreen 0:3b00827bb0b7 245 if (p != NULL) {
AdamGreen 0:3b00827bb0b7 246 len = p->tot_len;
AdamGreen 0:3b00827bb0b7 247 } else {
AdamGreen 0:3b00827bb0b7 248 len = 0;
AdamGreen 0:3b00827bb0b7 249 }
AdamGreen 0:3b00827bb0b7 250
AdamGreen 0:3b00827bb0b7 251 if (sys_mbox_trypost(&conn->recvmbox, p) != ERR_OK) {
AdamGreen 0:3b00827bb0b7 252 /* don't deallocate p: it is presented to us later again from tcp_fasttmr! */
AdamGreen 0:3b00827bb0b7 253 return ERR_MEM;
AdamGreen 0:3b00827bb0b7 254 } else {
AdamGreen 0:3b00827bb0b7 255 #if LWIP_SO_RCVBUF
AdamGreen 0:3b00827bb0b7 256 SYS_ARCH_INC(conn->recv_avail, len);
AdamGreen 0:3b00827bb0b7 257 #endif /* LWIP_SO_RCVBUF */
AdamGreen 0:3b00827bb0b7 258 /* Register event with callback */
AdamGreen 0:3b00827bb0b7 259 API_EVENT(conn, NETCONN_EVT_RCVPLUS, len);
AdamGreen 0:3b00827bb0b7 260 }
AdamGreen 0:3b00827bb0b7 261
AdamGreen 0:3b00827bb0b7 262 return ERR_OK;
AdamGreen 0:3b00827bb0b7 263 }
AdamGreen 0:3b00827bb0b7 264
AdamGreen 0:3b00827bb0b7 265 /**
AdamGreen 0:3b00827bb0b7 266 * Poll callback function for TCP netconns.
AdamGreen 0:3b00827bb0b7 267 * Wakes up an application thread that waits for a connection to close
AdamGreen 0:3b00827bb0b7 268 * or data to be sent. The application thread then takes the
AdamGreen 0:3b00827bb0b7 269 * appropriate action to go on.
AdamGreen 0:3b00827bb0b7 270 *
AdamGreen 0:3b00827bb0b7 271 * Signals the conn->sem.
AdamGreen 0:3b00827bb0b7 272 * netconn_close waits for conn->sem if closing failed.
AdamGreen 0:3b00827bb0b7 273 *
AdamGreen 0:3b00827bb0b7 274 * @see tcp.h (struct tcp_pcb.poll) for parameters and return value
AdamGreen 0:3b00827bb0b7 275 */
AdamGreen 0:3b00827bb0b7 276 static err_t
AdamGreen 0:3b00827bb0b7 277 poll_tcp(void *arg, struct tcp_pcb *pcb)
AdamGreen 0:3b00827bb0b7 278 {
AdamGreen 0:3b00827bb0b7 279 struct netconn *conn = (struct netconn *)arg;
AdamGreen 0:3b00827bb0b7 280
AdamGreen 0:3b00827bb0b7 281 LWIP_UNUSED_ARG(pcb);
AdamGreen 0:3b00827bb0b7 282 LWIP_ASSERT("conn != NULL", (conn != NULL));
AdamGreen 0:3b00827bb0b7 283
AdamGreen 0:3b00827bb0b7 284 if (conn->state == NETCONN_WRITE) {
AdamGreen 0:3b00827bb0b7 285 do_writemore(conn);
AdamGreen 0:3b00827bb0b7 286 } else if (conn->state == NETCONN_CLOSE) {
AdamGreen 0:3b00827bb0b7 287 do_close_internal(conn);
AdamGreen 0:3b00827bb0b7 288 }
AdamGreen 0:3b00827bb0b7 289 /* @todo: implement connect timeout here? */
AdamGreen 0:3b00827bb0b7 290
AdamGreen 0:3b00827bb0b7 291 /* Did a nonblocking write fail before? Then check available write-space. */
AdamGreen 0:3b00827bb0b7 292 if (conn->flags & NETCONN_FLAG_CHECK_WRITESPACE) {
AdamGreen 0:3b00827bb0b7 293 /* If the queued byte- or pbuf-count drops below the configured low-water limit,
AdamGreen 0:3b00827bb0b7 294 let select mark this pcb as writable again. */
AdamGreen 0:3b00827bb0b7 295 if ((conn->pcb.tcp != NULL) && (tcp_sndbuf(conn->pcb.tcp) > TCP_SNDLOWAT) &&
AdamGreen 0:3b00827bb0b7 296 (tcp_sndqueuelen(conn->pcb.tcp) < TCP_SNDQUEUELOWAT)) {
AdamGreen 0:3b00827bb0b7 297 conn->flags &= ~NETCONN_FLAG_CHECK_WRITESPACE;
AdamGreen 0:3b00827bb0b7 298 API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
AdamGreen 0:3b00827bb0b7 299 }
AdamGreen 0:3b00827bb0b7 300 }
AdamGreen 0:3b00827bb0b7 301
AdamGreen 0:3b00827bb0b7 302 return ERR_OK;
AdamGreen 0:3b00827bb0b7 303 }
AdamGreen 0:3b00827bb0b7 304
AdamGreen 0:3b00827bb0b7 305 /**
AdamGreen 0:3b00827bb0b7 306 * Sent callback function for TCP netconns.
AdamGreen 0:3b00827bb0b7 307 * Signals the conn->sem and calls API_EVENT.
AdamGreen 0:3b00827bb0b7 308 * netconn_write waits for conn->sem if send buffer is low.
AdamGreen 0:3b00827bb0b7 309 *
AdamGreen 0:3b00827bb0b7 310 * @see tcp.h (struct tcp_pcb.sent) for parameters and return value
AdamGreen 0:3b00827bb0b7 311 */
AdamGreen 0:3b00827bb0b7 312 static err_t
AdamGreen 0:3b00827bb0b7 313 sent_tcp(void *arg, struct tcp_pcb *pcb, u16_t len)
AdamGreen 0:3b00827bb0b7 314 {
AdamGreen 0:3b00827bb0b7 315 struct netconn *conn = (struct netconn *)arg;
AdamGreen 0:3b00827bb0b7 316
AdamGreen 0:3b00827bb0b7 317 LWIP_UNUSED_ARG(pcb);
AdamGreen 0:3b00827bb0b7 318 LWIP_ASSERT("conn != NULL", (conn != NULL));
AdamGreen 0:3b00827bb0b7 319
AdamGreen 0:3b00827bb0b7 320 if (conn->state == NETCONN_WRITE) {
AdamGreen 0:3b00827bb0b7 321 do_writemore(conn);
AdamGreen 0:3b00827bb0b7 322 } else if (conn->state == NETCONN_CLOSE) {
AdamGreen 0:3b00827bb0b7 323 do_close_internal(conn);
AdamGreen 0:3b00827bb0b7 324 }
AdamGreen 0:3b00827bb0b7 325
AdamGreen 0:3b00827bb0b7 326 if (conn) {
AdamGreen 0:3b00827bb0b7 327 /* If the queued byte- or pbuf-count drops below the configured low-water limit,
AdamGreen 0:3b00827bb0b7 328 let select mark this pcb as writable again. */
AdamGreen 0:3b00827bb0b7 329 if ((conn->pcb.tcp != NULL) && (tcp_sndbuf(conn->pcb.tcp) > TCP_SNDLOWAT) &&
AdamGreen 0:3b00827bb0b7 330 (tcp_sndqueuelen(conn->pcb.tcp) < TCP_SNDQUEUELOWAT)) {
AdamGreen 0:3b00827bb0b7 331 conn->flags &= ~NETCONN_FLAG_CHECK_WRITESPACE;
AdamGreen 0:3b00827bb0b7 332 API_EVENT(conn, NETCONN_EVT_SENDPLUS, len);
AdamGreen 0:3b00827bb0b7 333 }
AdamGreen 0:3b00827bb0b7 334 }
AdamGreen 0:3b00827bb0b7 335
AdamGreen 0:3b00827bb0b7 336 return ERR_OK;
AdamGreen 0:3b00827bb0b7 337 }
AdamGreen 0:3b00827bb0b7 338
AdamGreen 0:3b00827bb0b7 339 /**
AdamGreen 0:3b00827bb0b7 340 * Error callback function for TCP netconns.
AdamGreen 0:3b00827bb0b7 341 * Signals conn->sem, posts to all conn mboxes and calls API_EVENT.
AdamGreen 0:3b00827bb0b7 342 * The application thread has then to decide what to do.
AdamGreen 0:3b00827bb0b7 343 *
AdamGreen 0:3b00827bb0b7 344 * @see tcp.h (struct tcp_pcb.err) for parameters
AdamGreen 0:3b00827bb0b7 345 */
AdamGreen 0:3b00827bb0b7 346 static void
AdamGreen 0:3b00827bb0b7 347 err_tcp(void *arg, err_t err)
AdamGreen 0:3b00827bb0b7 348 {
AdamGreen 0:3b00827bb0b7 349 struct netconn *conn;
AdamGreen 0:3b00827bb0b7 350 enum netconn_state old_state;
AdamGreen 0:3b00827bb0b7 351 SYS_ARCH_DECL_PROTECT(lev);
AdamGreen 0:3b00827bb0b7 352
AdamGreen 0:3b00827bb0b7 353 conn = (struct netconn *)arg;
AdamGreen 0:3b00827bb0b7 354 LWIP_ASSERT("conn != NULL", (conn != NULL));
AdamGreen 0:3b00827bb0b7 355
AdamGreen 0:3b00827bb0b7 356 conn->pcb.tcp = NULL;
AdamGreen 0:3b00827bb0b7 357
AdamGreen 0:3b00827bb0b7 358 /* no check since this is always fatal! */
AdamGreen 0:3b00827bb0b7 359 SYS_ARCH_PROTECT(lev);
AdamGreen 0:3b00827bb0b7 360 conn->last_err = err;
AdamGreen 0:3b00827bb0b7 361 SYS_ARCH_UNPROTECT(lev);
AdamGreen 0:3b00827bb0b7 362
AdamGreen 0:3b00827bb0b7 363 /* reset conn->state now before waking up other threads */
AdamGreen 0:3b00827bb0b7 364 old_state = conn->state;
AdamGreen 0:3b00827bb0b7 365 conn->state = NETCONN_NONE;
AdamGreen 0:3b00827bb0b7 366
AdamGreen 0:3b00827bb0b7 367 /* Notify the user layer about a connection error. Used to signal
AdamGreen 0:3b00827bb0b7 368 select. */
AdamGreen 0:3b00827bb0b7 369 API_EVENT(conn, NETCONN_EVT_ERROR, 0);
AdamGreen 0:3b00827bb0b7 370 /* Try to release selects pending on 'read' or 'write', too.
AdamGreen 0:3b00827bb0b7 371 They will get an error if they actually try to read or write. */
AdamGreen 0:3b00827bb0b7 372 API_EVENT(conn, NETCONN_EVT_RCVPLUS, 0);
AdamGreen 0:3b00827bb0b7 373 API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
AdamGreen 0:3b00827bb0b7 374
AdamGreen 0:3b00827bb0b7 375 /* pass NULL-message to recvmbox to wake up pending recv */
AdamGreen 0:3b00827bb0b7 376 if (sys_mbox_valid(&conn->recvmbox)) {
AdamGreen 0:3b00827bb0b7 377 /* use trypost to prevent deadlock */
AdamGreen 0:3b00827bb0b7 378 sys_mbox_trypost(&conn->recvmbox, NULL);
AdamGreen 0:3b00827bb0b7 379 }
AdamGreen 0:3b00827bb0b7 380 /* pass NULL-message to acceptmbox to wake up pending accept */
AdamGreen 0:3b00827bb0b7 381 if (sys_mbox_valid(&conn->acceptmbox)) {
AdamGreen 0:3b00827bb0b7 382 /* use trypost to preven deadlock */
AdamGreen 0:3b00827bb0b7 383 sys_mbox_trypost(&conn->acceptmbox, NULL);
AdamGreen 0:3b00827bb0b7 384 }
AdamGreen 0:3b00827bb0b7 385
AdamGreen 0:3b00827bb0b7 386 if ((old_state == NETCONN_WRITE) || (old_state == NETCONN_CLOSE) ||
AdamGreen 0:3b00827bb0b7 387 (old_state == NETCONN_CONNECT)) {
AdamGreen 0:3b00827bb0b7 388 /* calling do_writemore/do_close_internal is not necessary
AdamGreen 0:3b00827bb0b7 389 since the pcb has already been deleted! */
AdamGreen 0:3b00827bb0b7 390 int was_nonblocking_connect = IN_NONBLOCKING_CONNECT(conn);
AdamGreen 0:3b00827bb0b7 391 SET_NONBLOCKING_CONNECT(conn, 0);
AdamGreen 0:3b00827bb0b7 392
AdamGreen 0:3b00827bb0b7 393 if (!was_nonblocking_connect) {
AdamGreen 0:3b00827bb0b7 394 /* set error return code */
AdamGreen 0:3b00827bb0b7 395 LWIP_ASSERT("conn->current_msg != NULL", conn->current_msg != NULL);
AdamGreen 0:3b00827bb0b7 396 conn->current_msg->err = err;
AdamGreen 0:3b00827bb0b7 397 conn->current_msg = NULL;
AdamGreen 0:3b00827bb0b7 398 /* wake up the waiting task */
AdamGreen 0:3b00827bb0b7 399 sys_sem_signal(&conn->op_completed);
AdamGreen 0:3b00827bb0b7 400 }
AdamGreen 0:3b00827bb0b7 401 } else {
AdamGreen 0:3b00827bb0b7 402 LWIP_ASSERT("conn->current_msg == NULL", conn->current_msg == NULL);
AdamGreen 0:3b00827bb0b7 403 }
AdamGreen 0:3b00827bb0b7 404 }
AdamGreen 0:3b00827bb0b7 405
AdamGreen 0:3b00827bb0b7 406 /**
AdamGreen 0:3b00827bb0b7 407 * Setup a tcp_pcb with the correct callback function pointers
AdamGreen 0:3b00827bb0b7 408 * and their arguments.
AdamGreen 0:3b00827bb0b7 409 *
AdamGreen 0:3b00827bb0b7 410 * @param conn the TCP netconn to setup
AdamGreen 0:3b00827bb0b7 411 */
AdamGreen 0:3b00827bb0b7 412 static void
AdamGreen 0:3b00827bb0b7 413 setup_tcp(struct netconn *conn)
AdamGreen 0:3b00827bb0b7 414 {
AdamGreen 0:3b00827bb0b7 415 struct tcp_pcb *pcb;
AdamGreen 0:3b00827bb0b7 416
AdamGreen 0:3b00827bb0b7 417 pcb = conn->pcb.tcp;
AdamGreen 0:3b00827bb0b7 418 tcp_arg(pcb, conn);
AdamGreen 0:3b00827bb0b7 419 tcp_recv(pcb, recv_tcp);
AdamGreen 0:3b00827bb0b7 420 tcp_sent(pcb, sent_tcp);
AdamGreen 0:3b00827bb0b7 421 tcp_poll(pcb, poll_tcp, 4);
AdamGreen 0:3b00827bb0b7 422 tcp_err(pcb, err_tcp);
AdamGreen 0:3b00827bb0b7 423 }
AdamGreen 0:3b00827bb0b7 424
AdamGreen 0:3b00827bb0b7 425 /**
AdamGreen 0:3b00827bb0b7 426 * Accept callback function for TCP netconns.
AdamGreen 0:3b00827bb0b7 427 * Allocates a new netconn and posts that to conn->acceptmbox.
AdamGreen 0:3b00827bb0b7 428 *
AdamGreen 0:3b00827bb0b7 429 * @see tcp.h (struct tcp_pcb_listen.accept) for parameters and return value
AdamGreen 0:3b00827bb0b7 430 */
AdamGreen 0:3b00827bb0b7 431 static err_t
AdamGreen 0:3b00827bb0b7 432 accept_function(void *arg, struct tcp_pcb *newpcb, err_t err)
AdamGreen 0:3b00827bb0b7 433 {
AdamGreen 0:3b00827bb0b7 434 struct netconn *newconn;
AdamGreen 0:3b00827bb0b7 435 struct netconn *conn = (struct netconn *)arg;
AdamGreen 0:3b00827bb0b7 436
AdamGreen 0:3b00827bb0b7 437 LWIP_DEBUGF(API_MSG_DEBUG, ("accept_function: newpcb->tate: %s\n", tcp_debug_state_str(newpcb->state)));
AdamGreen 0:3b00827bb0b7 438
AdamGreen 0:3b00827bb0b7 439 if (!sys_mbox_valid(&conn->acceptmbox)) {
AdamGreen 0:3b00827bb0b7 440 LWIP_DEBUGF(API_MSG_DEBUG, ("accept_function: acceptmbox already deleted\n"));
AdamGreen 0:3b00827bb0b7 441 return ERR_VAL;
AdamGreen 0:3b00827bb0b7 442 }
AdamGreen 0:3b00827bb0b7 443
AdamGreen 0:3b00827bb0b7 444 /* We have to set the callback here even though
AdamGreen 0:3b00827bb0b7 445 * the new socket is unknown. conn->socket is marked as -1. */
AdamGreen 0:3b00827bb0b7 446 newconn = netconn_alloc(conn->type, conn->callback);
AdamGreen 0:3b00827bb0b7 447 if (newconn == NULL) {
AdamGreen 0:3b00827bb0b7 448 return ERR_MEM;
AdamGreen 0:3b00827bb0b7 449 }
AdamGreen 0:3b00827bb0b7 450 newconn->pcb.tcp = newpcb;
AdamGreen 0:3b00827bb0b7 451 setup_tcp(newconn);
AdamGreen 0:3b00827bb0b7 452 /* no protection: when creating the pcb, the netconn is not yet known
AdamGreen 0:3b00827bb0b7 453 to the application thread */
AdamGreen 0:3b00827bb0b7 454 newconn->last_err = err;
AdamGreen 0:3b00827bb0b7 455
AdamGreen 0:3b00827bb0b7 456 if (sys_mbox_trypost(&conn->acceptmbox, newconn) != ERR_OK) {
AdamGreen 0:3b00827bb0b7 457 /* When returning != ERR_OK, the pcb is aborted in tcp_process(),
AdamGreen 0:3b00827bb0b7 458 so do nothing here! */
AdamGreen 0:3b00827bb0b7 459 newconn->pcb.tcp = NULL;
AdamGreen 0:3b00827bb0b7 460 /* no need to drain since we know the recvmbox is empty. */
AdamGreen 0:3b00827bb0b7 461 sys_mbox_free(&newconn->recvmbox);
AdamGreen 0:3b00827bb0b7 462 sys_mbox_set_invalid(&newconn->recvmbox);
AdamGreen 0:3b00827bb0b7 463 netconn_free(newconn);
AdamGreen 0:3b00827bb0b7 464 return ERR_MEM;
AdamGreen 0:3b00827bb0b7 465 } else {
AdamGreen 0:3b00827bb0b7 466 /* Register event with callback */
AdamGreen 0:3b00827bb0b7 467 API_EVENT(conn, NETCONN_EVT_RCVPLUS, 0);
AdamGreen 0:3b00827bb0b7 468 }
AdamGreen 0:3b00827bb0b7 469
AdamGreen 0:3b00827bb0b7 470 return ERR_OK;
AdamGreen 0:3b00827bb0b7 471 }
AdamGreen 0:3b00827bb0b7 472 #endif /* LWIP_TCP */
AdamGreen 0:3b00827bb0b7 473
AdamGreen 0:3b00827bb0b7 474 /**
AdamGreen 0:3b00827bb0b7 475 * Create a new pcb of a specific type.
AdamGreen 0:3b00827bb0b7 476 * Called from do_newconn().
AdamGreen 0:3b00827bb0b7 477 *
AdamGreen 0:3b00827bb0b7 478 * @param msg the api_msg_msg describing the connection type
AdamGreen 0:3b00827bb0b7 479 * @return msg->conn->err, but the return value is currently ignored
AdamGreen 0:3b00827bb0b7 480 */
AdamGreen 0:3b00827bb0b7 481 static void
AdamGreen 0:3b00827bb0b7 482 pcb_new(struct api_msg_msg *msg)
AdamGreen 0:3b00827bb0b7 483 {
AdamGreen 0:3b00827bb0b7 484 LWIP_ASSERT("pcb_new: pcb already allocated", msg->conn->pcb.tcp == NULL);
AdamGreen 0:3b00827bb0b7 485
AdamGreen 0:3b00827bb0b7 486 /* Allocate a PCB for this connection */
AdamGreen 0:3b00827bb0b7 487 switch(NETCONNTYPE_GROUP(msg->conn->type)) {
AdamGreen 0:3b00827bb0b7 488 #if LWIP_RAW
AdamGreen 0:3b00827bb0b7 489 case NETCONN_RAW:
AdamGreen 0:3b00827bb0b7 490 msg->conn->pcb.raw = raw_new(msg->msg.n.proto);
AdamGreen 0:3b00827bb0b7 491 if(msg->conn->pcb.raw == NULL) {
AdamGreen 0:3b00827bb0b7 492 msg->err = ERR_MEM;
AdamGreen 0:3b00827bb0b7 493 break;
AdamGreen 0:3b00827bb0b7 494 }
AdamGreen 0:3b00827bb0b7 495 raw_recv(msg->conn->pcb.raw, recv_raw, msg->conn);
AdamGreen 0:3b00827bb0b7 496 break;
AdamGreen 0:3b00827bb0b7 497 #endif /* LWIP_RAW */
AdamGreen 0:3b00827bb0b7 498 #if LWIP_UDP
AdamGreen 0:3b00827bb0b7 499 case NETCONN_UDP:
AdamGreen 0:3b00827bb0b7 500 msg->conn->pcb.udp = udp_new();
AdamGreen 0:3b00827bb0b7 501 if(msg->conn->pcb.udp == NULL) {
AdamGreen 0:3b00827bb0b7 502 msg->err = ERR_MEM;
AdamGreen 0:3b00827bb0b7 503 break;
AdamGreen 0:3b00827bb0b7 504 }
AdamGreen 0:3b00827bb0b7 505 #if LWIP_UDPLITE
AdamGreen 0:3b00827bb0b7 506 if (msg->conn->type==NETCONN_UDPLITE) {
AdamGreen 0:3b00827bb0b7 507 udp_setflags(msg->conn->pcb.udp, UDP_FLAGS_UDPLITE);
AdamGreen 0:3b00827bb0b7 508 }
AdamGreen 0:3b00827bb0b7 509 #endif /* LWIP_UDPLITE */
AdamGreen 0:3b00827bb0b7 510 if (msg->conn->type==NETCONN_UDPNOCHKSUM) {
AdamGreen 0:3b00827bb0b7 511 udp_setflags(msg->conn->pcb.udp, UDP_FLAGS_NOCHKSUM);
AdamGreen 0:3b00827bb0b7 512 }
AdamGreen 0:3b00827bb0b7 513 udp_recv(msg->conn->pcb.udp, recv_udp, msg->conn);
AdamGreen 0:3b00827bb0b7 514 break;
AdamGreen 0:3b00827bb0b7 515 #endif /* LWIP_UDP */
AdamGreen 0:3b00827bb0b7 516 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 517 case NETCONN_TCP:
AdamGreen 0:3b00827bb0b7 518 msg->conn->pcb.tcp = tcp_new();
AdamGreen 0:3b00827bb0b7 519 if(msg->conn->pcb.tcp == NULL) {
AdamGreen 0:3b00827bb0b7 520 msg->err = ERR_MEM;
AdamGreen 0:3b00827bb0b7 521 break;
AdamGreen 0:3b00827bb0b7 522 }
AdamGreen 0:3b00827bb0b7 523 setup_tcp(msg->conn);
AdamGreen 0:3b00827bb0b7 524 break;
AdamGreen 0:3b00827bb0b7 525 #endif /* LWIP_TCP */
AdamGreen 0:3b00827bb0b7 526 default:
AdamGreen 0:3b00827bb0b7 527 /* Unsupported netconn type, e.g. protocol disabled */
AdamGreen 0:3b00827bb0b7 528 msg->err = ERR_VAL;
AdamGreen 0:3b00827bb0b7 529 break;
AdamGreen 0:3b00827bb0b7 530 }
AdamGreen 0:3b00827bb0b7 531 }
AdamGreen 0:3b00827bb0b7 532
AdamGreen 0:3b00827bb0b7 533 /**
AdamGreen 0:3b00827bb0b7 534 * Create a new pcb of a specific type inside a netconn.
AdamGreen 0:3b00827bb0b7 535 * Called from netconn_new_with_proto_and_callback.
AdamGreen 0:3b00827bb0b7 536 *
AdamGreen 0:3b00827bb0b7 537 * @param msg the api_msg_msg describing the connection type
AdamGreen 0:3b00827bb0b7 538 */
AdamGreen 0:3b00827bb0b7 539 void
AdamGreen 0:3b00827bb0b7 540 do_newconn(struct api_msg_msg *msg)
AdamGreen 0:3b00827bb0b7 541 {
AdamGreen 0:3b00827bb0b7 542 msg->err = ERR_OK;
AdamGreen 0:3b00827bb0b7 543 if(msg->conn->pcb.tcp == NULL) {
AdamGreen 0:3b00827bb0b7 544 pcb_new(msg);
AdamGreen 0:3b00827bb0b7 545 }
AdamGreen 0:3b00827bb0b7 546 /* Else? This "new" connection already has a PCB allocated. */
AdamGreen 0:3b00827bb0b7 547 /* Is this an error condition? Should it be deleted? */
AdamGreen 0:3b00827bb0b7 548 /* We currently just are happy and return. */
AdamGreen 0:3b00827bb0b7 549
AdamGreen 0:3b00827bb0b7 550 TCPIP_APIMSG_ACK(msg);
AdamGreen 0:3b00827bb0b7 551 }
AdamGreen 0:3b00827bb0b7 552
AdamGreen 0:3b00827bb0b7 553 /**
AdamGreen 0:3b00827bb0b7 554 * Create a new netconn (of a specific type) that has a callback function.
AdamGreen 0:3b00827bb0b7 555 * The corresponding pcb is NOT created!
AdamGreen 0:3b00827bb0b7 556 *
AdamGreen 0:3b00827bb0b7 557 * @param t the type of 'connection' to create (@see enum netconn_type)
AdamGreen 0:3b00827bb0b7 558 * @param proto the IP protocol for RAW IP pcbs
AdamGreen 0:3b00827bb0b7 559 * @param callback a function to call on status changes (RX available, TX'ed)
AdamGreen 0:3b00827bb0b7 560 * @return a newly allocated struct netconn or
AdamGreen 0:3b00827bb0b7 561 * NULL on memory error
AdamGreen 0:3b00827bb0b7 562 */
AdamGreen 0:3b00827bb0b7 563 struct netconn*
AdamGreen 0:3b00827bb0b7 564 netconn_alloc(enum netconn_type t, netconn_callback callback)
AdamGreen 0:3b00827bb0b7 565 {
AdamGreen 0:3b00827bb0b7 566 struct netconn *conn;
AdamGreen 0:3b00827bb0b7 567 int size;
AdamGreen 0:3b00827bb0b7 568
AdamGreen 0:3b00827bb0b7 569 conn = (struct netconn *)memp_malloc(MEMP_NETCONN);
AdamGreen 0:3b00827bb0b7 570 if (conn == NULL) {
AdamGreen 0:3b00827bb0b7 571 return NULL;
AdamGreen 0:3b00827bb0b7 572 }
AdamGreen 0:3b00827bb0b7 573
AdamGreen 0:3b00827bb0b7 574 conn->last_err = ERR_OK;
AdamGreen 0:3b00827bb0b7 575 conn->type = t;
AdamGreen 0:3b00827bb0b7 576 conn->pcb.tcp = NULL;
AdamGreen 0:3b00827bb0b7 577
AdamGreen 0:3b00827bb0b7 578 #if (DEFAULT_RAW_RECVMBOX_SIZE == DEFAULT_UDP_RECVMBOX_SIZE) && \
AdamGreen 0:3b00827bb0b7 579 (DEFAULT_RAW_RECVMBOX_SIZE == DEFAULT_TCP_RECVMBOX_SIZE)
AdamGreen 0:3b00827bb0b7 580 size = DEFAULT_RAW_RECVMBOX_SIZE;
AdamGreen 0:3b00827bb0b7 581 #else
AdamGreen 0:3b00827bb0b7 582 switch(NETCONNTYPE_GROUP(t)) {
AdamGreen 0:3b00827bb0b7 583 #if LWIP_RAW
AdamGreen 0:3b00827bb0b7 584 case NETCONN_RAW:
AdamGreen 0:3b00827bb0b7 585 size = DEFAULT_RAW_RECVMBOX_SIZE;
AdamGreen 0:3b00827bb0b7 586 break;
AdamGreen 0:3b00827bb0b7 587 #endif /* LWIP_RAW */
AdamGreen 0:3b00827bb0b7 588 #if LWIP_UDP
AdamGreen 0:3b00827bb0b7 589 case NETCONN_UDP:
AdamGreen 0:3b00827bb0b7 590 size = DEFAULT_UDP_RECVMBOX_SIZE;
AdamGreen 0:3b00827bb0b7 591 break;
AdamGreen 0:3b00827bb0b7 592 #endif /* LWIP_UDP */
AdamGreen 0:3b00827bb0b7 593 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 594 case NETCONN_TCP:
AdamGreen 0:3b00827bb0b7 595 size = DEFAULT_TCP_RECVMBOX_SIZE;
AdamGreen 0:3b00827bb0b7 596 break;
AdamGreen 0:3b00827bb0b7 597 #endif /* LWIP_TCP */
AdamGreen 0:3b00827bb0b7 598 default:
AdamGreen 0:3b00827bb0b7 599 LWIP_ASSERT("netconn_alloc: undefined netconn_type", 0);
AdamGreen 0:3b00827bb0b7 600 break;
AdamGreen 0:3b00827bb0b7 601 }
AdamGreen 0:3b00827bb0b7 602 #endif
AdamGreen 0:3b00827bb0b7 603
AdamGreen 0:3b00827bb0b7 604 if (sys_sem_new(&conn->op_completed, 0) != ERR_OK) {
AdamGreen 0:3b00827bb0b7 605 memp_free(MEMP_NETCONN, conn);
AdamGreen 0:3b00827bb0b7 606 return NULL;
AdamGreen 0:3b00827bb0b7 607 }
AdamGreen 0:3b00827bb0b7 608 if (sys_mbox_new(&conn->recvmbox, size) != ERR_OK) {
AdamGreen 0:3b00827bb0b7 609 sys_sem_free(&conn->op_completed);
AdamGreen 0:3b00827bb0b7 610 memp_free(MEMP_NETCONN, conn);
AdamGreen 0:3b00827bb0b7 611 return NULL;
AdamGreen 0:3b00827bb0b7 612 }
AdamGreen 0:3b00827bb0b7 613
AdamGreen 0:3b00827bb0b7 614 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 615 sys_mbox_set_invalid(&conn->acceptmbox);
AdamGreen 0:3b00827bb0b7 616 #endif
AdamGreen 0:3b00827bb0b7 617 conn->state = NETCONN_NONE;
AdamGreen 0:3b00827bb0b7 618 #if LWIP_SOCKET
AdamGreen 0:3b00827bb0b7 619 /* initialize socket to -1 since 0 is a valid socket */
AdamGreen 0:3b00827bb0b7 620 conn->socket = -1;
AdamGreen 0:3b00827bb0b7 621 #endif /* LWIP_SOCKET */
AdamGreen 0:3b00827bb0b7 622 conn->callback = callback;
AdamGreen 0:3b00827bb0b7 623 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 624 conn->current_msg = NULL;
AdamGreen 0:3b00827bb0b7 625 conn->write_offset = 0;
AdamGreen 0:3b00827bb0b7 626 #endif /* LWIP_TCP */
AdamGreen 0:3b00827bb0b7 627 #if LWIP_SO_RCVTIMEO
AdamGreen 0:3b00827bb0b7 628 conn->recv_timeout = 0;
AdamGreen 0:3b00827bb0b7 629 #endif /* LWIP_SO_RCVTIMEO */
AdamGreen 0:3b00827bb0b7 630 #if LWIP_SO_RCVBUF
AdamGreen 0:3b00827bb0b7 631 conn->recv_bufsize = RECV_BUFSIZE_DEFAULT;
AdamGreen 0:3b00827bb0b7 632 conn->recv_avail = 0;
AdamGreen 0:3b00827bb0b7 633 #endif /* LWIP_SO_RCVBUF */
AdamGreen 0:3b00827bb0b7 634 conn->flags = 0;
AdamGreen 0:3b00827bb0b7 635 return conn;
AdamGreen 0:3b00827bb0b7 636 }
AdamGreen 0:3b00827bb0b7 637
AdamGreen 0:3b00827bb0b7 638 /**
AdamGreen 0:3b00827bb0b7 639 * Delete a netconn and all its resources.
AdamGreen 0:3b00827bb0b7 640 * The pcb is NOT freed (since we might not be in the right thread context do this).
AdamGreen 0:3b00827bb0b7 641 *
AdamGreen 0:3b00827bb0b7 642 * @param conn the netconn to free
AdamGreen 0:3b00827bb0b7 643 */
AdamGreen 0:3b00827bb0b7 644 void
AdamGreen 0:3b00827bb0b7 645 netconn_free(struct netconn *conn)
AdamGreen 0:3b00827bb0b7 646 {
AdamGreen 0:3b00827bb0b7 647 LWIP_ASSERT("PCB must be deallocated outside this function", conn->pcb.tcp == NULL);
AdamGreen 0:3b00827bb0b7 648 LWIP_ASSERT("recvmbox must be deallocated before calling this function",
AdamGreen 0:3b00827bb0b7 649 !sys_mbox_valid(&conn->recvmbox));
AdamGreen 0:3b00827bb0b7 650 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 651 LWIP_ASSERT("acceptmbox must be deallocated before calling this function",
AdamGreen 0:3b00827bb0b7 652 !sys_mbox_valid(&conn->acceptmbox));
AdamGreen 0:3b00827bb0b7 653 #endif /* LWIP_TCP */
AdamGreen 0:3b00827bb0b7 654
AdamGreen 0:3b00827bb0b7 655 sys_sem_free(&conn->op_completed);
AdamGreen 0:3b00827bb0b7 656 sys_sem_set_invalid(&conn->op_completed);
AdamGreen 0:3b00827bb0b7 657
AdamGreen 0:3b00827bb0b7 658 memp_free(MEMP_NETCONN, conn);
AdamGreen 0:3b00827bb0b7 659 }
AdamGreen 0:3b00827bb0b7 660
AdamGreen 0:3b00827bb0b7 661 /**
AdamGreen 0:3b00827bb0b7 662 * Delete rcvmbox and acceptmbox of a netconn and free the left-over data in
AdamGreen 0:3b00827bb0b7 663 * these mboxes
AdamGreen 0:3b00827bb0b7 664 *
AdamGreen 0:3b00827bb0b7 665 * @param conn the netconn to free
AdamGreen 0:3b00827bb0b7 666 * @bytes_drained bytes drained from recvmbox
AdamGreen 0:3b00827bb0b7 667 * @accepts_drained pending connections drained from acceptmbox
AdamGreen 0:3b00827bb0b7 668 */
AdamGreen 0:3b00827bb0b7 669 static void
AdamGreen 0:3b00827bb0b7 670 netconn_drain(struct netconn *conn)
AdamGreen 0:3b00827bb0b7 671 {
AdamGreen 0:3b00827bb0b7 672 void *mem;
AdamGreen 0:3b00827bb0b7 673 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 674 struct pbuf *p;
AdamGreen 0:3b00827bb0b7 675 #endif /* LWIP_TCP */
AdamGreen 0:3b00827bb0b7 676
AdamGreen 0:3b00827bb0b7 677 /* This runs in tcpip_thread, so we don't need to lock against rx packets */
AdamGreen 0:3b00827bb0b7 678
AdamGreen 0:3b00827bb0b7 679 /* Delete and drain the recvmbox. */
AdamGreen 0:3b00827bb0b7 680 if (sys_mbox_valid(&conn->recvmbox)) {
AdamGreen 0:3b00827bb0b7 681 while (sys_mbox_tryfetch(&conn->recvmbox, &mem) != SYS_MBOX_EMPTY) {
AdamGreen 0:3b00827bb0b7 682 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 683 if (conn->type == NETCONN_TCP) {
AdamGreen 0:3b00827bb0b7 684 if(mem != NULL) {
AdamGreen 0:3b00827bb0b7 685 p = (struct pbuf*)mem;
AdamGreen 0:3b00827bb0b7 686 /* pcb might be set to NULL already by err_tcp() */
AdamGreen 0:3b00827bb0b7 687 if (conn->pcb.tcp != NULL) {
AdamGreen 0:3b00827bb0b7 688 tcp_recved(conn->pcb.tcp, p->tot_len);
AdamGreen 0:3b00827bb0b7 689 }
AdamGreen 0:3b00827bb0b7 690 pbuf_free(p);
AdamGreen 0:3b00827bb0b7 691 }
AdamGreen 0:3b00827bb0b7 692 } else
AdamGreen 0:3b00827bb0b7 693 #endif /* LWIP_TCP */
AdamGreen 0:3b00827bb0b7 694 {
AdamGreen 0:3b00827bb0b7 695 netbuf_delete((struct netbuf *)mem);
AdamGreen 0:3b00827bb0b7 696 }
AdamGreen 0:3b00827bb0b7 697 }
AdamGreen 0:3b00827bb0b7 698 sys_mbox_free(&conn->recvmbox);
AdamGreen 0:3b00827bb0b7 699 sys_mbox_set_invalid(&conn->recvmbox);
AdamGreen 0:3b00827bb0b7 700 }
AdamGreen 0:3b00827bb0b7 701
AdamGreen 0:3b00827bb0b7 702 /* Delete and drain the acceptmbox. */
AdamGreen 0:3b00827bb0b7 703 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 704 if (sys_mbox_valid(&conn->acceptmbox)) {
AdamGreen 0:3b00827bb0b7 705 while (sys_mbox_tryfetch(&conn->acceptmbox, &mem) != SYS_MBOX_EMPTY) {
AdamGreen 0:3b00827bb0b7 706 struct netconn *newconn = (struct netconn *)mem;
AdamGreen 0:3b00827bb0b7 707 /* Only tcp pcbs have an acceptmbox, so no need to check conn->type */
AdamGreen 0:3b00827bb0b7 708 /* pcb might be set to NULL already by err_tcp() */
AdamGreen 0:3b00827bb0b7 709 if (conn->pcb.tcp != NULL) {
AdamGreen 0:3b00827bb0b7 710 tcp_accepted(conn->pcb.tcp);
AdamGreen 0:3b00827bb0b7 711 }
AdamGreen 0:3b00827bb0b7 712 /* drain recvmbox */
AdamGreen 0:3b00827bb0b7 713 netconn_drain(newconn);
AdamGreen 0:3b00827bb0b7 714 if (newconn->pcb.tcp != NULL) {
AdamGreen 0:3b00827bb0b7 715 tcp_abort(newconn->pcb.tcp);
AdamGreen 0:3b00827bb0b7 716 newconn->pcb.tcp = NULL;
AdamGreen 0:3b00827bb0b7 717 }
AdamGreen 0:3b00827bb0b7 718 netconn_free(newconn);
AdamGreen 0:3b00827bb0b7 719 }
AdamGreen 0:3b00827bb0b7 720 sys_mbox_free(&conn->acceptmbox);
AdamGreen 0:3b00827bb0b7 721 sys_mbox_set_invalid(&conn->acceptmbox);
AdamGreen 0:3b00827bb0b7 722 }
AdamGreen 0:3b00827bb0b7 723 #endif /* LWIP_TCP */
AdamGreen 0:3b00827bb0b7 724 }
AdamGreen 0:3b00827bb0b7 725
AdamGreen 0:3b00827bb0b7 726 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 727 /**
AdamGreen 0:3b00827bb0b7 728 * Internal helper function to close a TCP netconn: since this sometimes
AdamGreen 0:3b00827bb0b7 729 * doesn't work at the first attempt, this function is called from multiple
AdamGreen 0:3b00827bb0b7 730 * places.
AdamGreen 0:3b00827bb0b7 731 *
AdamGreen 0:3b00827bb0b7 732 * @param conn the TCP netconn to close
AdamGreen 0:3b00827bb0b7 733 */
AdamGreen 0:3b00827bb0b7 734 static void
AdamGreen 0:3b00827bb0b7 735 do_close_internal(struct netconn *conn)
AdamGreen 0:3b00827bb0b7 736 {
AdamGreen 0:3b00827bb0b7 737 err_t err;
AdamGreen 0:3b00827bb0b7 738 u8_t shut, shut_rx, shut_tx, close;
AdamGreen 0:3b00827bb0b7 739
AdamGreen 0:3b00827bb0b7 740 LWIP_ASSERT("invalid conn", (conn != NULL));
AdamGreen 0:3b00827bb0b7 741 LWIP_ASSERT("this is for tcp netconns only", (conn->type == NETCONN_TCP));
AdamGreen 0:3b00827bb0b7 742 LWIP_ASSERT("conn must be in state NETCONN_CLOSE", (conn->state == NETCONN_CLOSE));
AdamGreen 0:3b00827bb0b7 743 LWIP_ASSERT("pcb already closed", (conn->pcb.tcp != NULL));
AdamGreen 0:3b00827bb0b7 744 LWIP_ASSERT("conn->current_msg != NULL", conn->current_msg != NULL);
AdamGreen 0:3b00827bb0b7 745
AdamGreen 0:3b00827bb0b7 746 shut = conn->current_msg->msg.sd.shut;
AdamGreen 0:3b00827bb0b7 747 shut_rx = shut & NETCONN_SHUT_RD;
AdamGreen 0:3b00827bb0b7 748 shut_tx = shut & NETCONN_SHUT_WR;
AdamGreen 0:3b00827bb0b7 749 /* shutting down both ends is the same as closing */
AdamGreen 0:3b00827bb0b7 750 close = shut == NETCONN_SHUT_RDWR;
AdamGreen 0:3b00827bb0b7 751
AdamGreen 0:3b00827bb0b7 752 /* Set back some callback pointers */
AdamGreen 0:3b00827bb0b7 753 if (close) {
AdamGreen 0:3b00827bb0b7 754 tcp_arg(conn->pcb.tcp, NULL);
AdamGreen 0:3b00827bb0b7 755 }
AdamGreen 0:3b00827bb0b7 756 if (conn->pcb.tcp->state == LISTEN) {
AdamGreen 0:3b00827bb0b7 757 tcp_accept(conn->pcb.tcp, NULL);
AdamGreen 0:3b00827bb0b7 758 } else {
AdamGreen 0:3b00827bb0b7 759 /* some callbacks have to be reset if tcp_close is not successful */
AdamGreen 0:3b00827bb0b7 760 if (shut_rx) {
AdamGreen 0:3b00827bb0b7 761 tcp_recv(conn->pcb.tcp, NULL);
AdamGreen 0:3b00827bb0b7 762 tcp_accept(conn->pcb.tcp, NULL);
AdamGreen 0:3b00827bb0b7 763 }
AdamGreen 0:3b00827bb0b7 764 if (shut_tx) {
AdamGreen 0:3b00827bb0b7 765 tcp_sent(conn->pcb.tcp, NULL);
AdamGreen 0:3b00827bb0b7 766 }
AdamGreen 0:3b00827bb0b7 767 if (close) {
AdamGreen 0:3b00827bb0b7 768 tcp_poll(conn->pcb.tcp, NULL, 4);
AdamGreen 0:3b00827bb0b7 769 tcp_err(conn->pcb.tcp, NULL);
AdamGreen 0:3b00827bb0b7 770 }
AdamGreen 0:3b00827bb0b7 771 }
AdamGreen 0:3b00827bb0b7 772 /* Try to close the connection */
AdamGreen 0:3b00827bb0b7 773 if (shut == NETCONN_SHUT_RDWR) {
AdamGreen 0:3b00827bb0b7 774 err = tcp_close(conn->pcb.tcp);
AdamGreen 0:3b00827bb0b7 775 } else {
AdamGreen 0:3b00827bb0b7 776 err = tcp_shutdown(conn->pcb.tcp, shut & NETCONN_SHUT_RD, shut & NETCONN_SHUT_WR);
AdamGreen 0:3b00827bb0b7 777 }
AdamGreen 0:3b00827bb0b7 778 if (err == ERR_OK) {
AdamGreen 0:3b00827bb0b7 779 /* Closing succeeded */
AdamGreen 0:3b00827bb0b7 780 conn->current_msg->err = ERR_OK;
AdamGreen 0:3b00827bb0b7 781 conn->current_msg = NULL;
AdamGreen 0:3b00827bb0b7 782 conn->state = NETCONN_NONE;
AdamGreen 0:3b00827bb0b7 783 /* Set back some callback pointers as conn is going away */
AdamGreen 0:3b00827bb0b7 784 conn->pcb.tcp = NULL;
AdamGreen 0:3b00827bb0b7 785 /* Trigger select() in socket layer. Make sure everybody notices activity
AdamGreen 0:3b00827bb0b7 786 on the connection, error first! */
AdamGreen 0:3b00827bb0b7 787 if (close) {
AdamGreen 0:3b00827bb0b7 788 API_EVENT(conn, NETCONN_EVT_ERROR, 0);
AdamGreen 0:3b00827bb0b7 789 }
AdamGreen 0:3b00827bb0b7 790 if (shut_rx) {
AdamGreen 0:3b00827bb0b7 791 API_EVENT(conn, NETCONN_EVT_RCVPLUS, 0);
AdamGreen 0:3b00827bb0b7 792 }
AdamGreen 0:3b00827bb0b7 793 if (shut_tx) {
AdamGreen 0:3b00827bb0b7 794 API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
AdamGreen 0:3b00827bb0b7 795 }
AdamGreen 0:3b00827bb0b7 796 /* wake up the application task */
AdamGreen 0:3b00827bb0b7 797 sys_sem_signal(&conn->op_completed);
AdamGreen 0:3b00827bb0b7 798 } else {
AdamGreen 0:3b00827bb0b7 799 /* Closing failed, restore some of the callbacks */
AdamGreen 0:3b00827bb0b7 800 /* Closing of listen pcb will never fail! */
AdamGreen 0:3b00827bb0b7 801 LWIP_ASSERT("Closing a listen pcb may not fail!", (conn->pcb.tcp->state != LISTEN));
AdamGreen 0:3b00827bb0b7 802 tcp_sent(conn->pcb.tcp, sent_tcp);
AdamGreen 0:3b00827bb0b7 803 tcp_poll(conn->pcb.tcp, poll_tcp, 4);
AdamGreen 0:3b00827bb0b7 804 tcp_err(conn->pcb.tcp, err_tcp);
AdamGreen 0:3b00827bb0b7 805 tcp_arg(conn->pcb.tcp, conn);
AdamGreen 0:3b00827bb0b7 806 /* don't restore recv callback: we don't want to receive any more data */
AdamGreen 0:3b00827bb0b7 807 }
AdamGreen 0:3b00827bb0b7 808 /* If closing didn't succeed, we get called again either
AdamGreen 0:3b00827bb0b7 809 from poll_tcp or from sent_tcp */
AdamGreen 0:3b00827bb0b7 810 }
AdamGreen 0:3b00827bb0b7 811 #endif /* LWIP_TCP */
AdamGreen 0:3b00827bb0b7 812
AdamGreen 0:3b00827bb0b7 813 /**
AdamGreen 0:3b00827bb0b7 814 * Delete the pcb inside a netconn.
AdamGreen 0:3b00827bb0b7 815 * Called from netconn_delete.
AdamGreen 0:3b00827bb0b7 816 *
AdamGreen 0:3b00827bb0b7 817 * @param msg the api_msg_msg pointing to the connection
AdamGreen 0:3b00827bb0b7 818 */
AdamGreen 0:3b00827bb0b7 819 void
AdamGreen 0:3b00827bb0b7 820 do_delconn(struct api_msg_msg *msg)
AdamGreen 0:3b00827bb0b7 821 {
AdamGreen 0:3b00827bb0b7 822 /* @todo TCP: abort running write/connect? */
AdamGreen 0:3b00827bb0b7 823 if ((msg->conn->state != NETCONN_NONE) &&
AdamGreen 0:3b00827bb0b7 824 (msg->conn->state != NETCONN_LISTEN) &&
AdamGreen 0:3b00827bb0b7 825 (msg->conn->state != NETCONN_CONNECT)) {
AdamGreen 0:3b00827bb0b7 826 /* this only happens for TCP netconns */
AdamGreen 0:3b00827bb0b7 827 LWIP_ASSERT("msg->conn->type == NETCONN_TCP", msg->conn->type == NETCONN_TCP);
AdamGreen 0:3b00827bb0b7 828 msg->err = ERR_INPROGRESS;
AdamGreen 0:3b00827bb0b7 829 } else {
AdamGreen 0:3b00827bb0b7 830 LWIP_ASSERT("blocking connect in progress",
AdamGreen 0:3b00827bb0b7 831 (msg->conn->state != NETCONN_CONNECT) || IN_NONBLOCKING_CONNECT(msg->conn));
AdamGreen 0:3b00827bb0b7 832 /* Drain and delete mboxes */
AdamGreen 0:3b00827bb0b7 833 netconn_drain(msg->conn);
AdamGreen 0:3b00827bb0b7 834
AdamGreen 0:3b00827bb0b7 835 if (msg->conn->pcb.tcp != NULL) {
AdamGreen 0:3b00827bb0b7 836
AdamGreen 0:3b00827bb0b7 837 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
AdamGreen 0:3b00827bb0b7 838 #if LWIP_RAW
AdamGreen 0:3b00827bb0b7 839 case NETCONN_RAW:
AdamGreen 0:3b00827bb0b7 840 raw_remove(msg->conn->pcb.raw);
AdamGreen 0:3b00827bb0b7 841 break;
AdamGreen 0:3b00827bb0b7 842 #endif /* LWIP_RAW */
AdamGreen 0:3b00827bb0b7 843 #if LWIP_UDP
AdamGreen 0:3b00827bb0b7 844 case NETCONN_UDP:
AdamGreen 0:3b00827bb0b7 845 msg->conn->pcb.udp->recv_arg = NULL;
AdamGreen 0:3b00827bb0b7 846 udp_remove(msg->conn->pcb.udp);
AdamGreen 0:3b00827bb0b7 847 break;
AdamGreen 0:3b00827bb0b7 848 #endif /* LWIP_UDP */
AdamGreen 0:3b00827bb0b7 849 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 850 case NETCONN_TCP:
AdamGreen 0:3b00827bb0b7 851 LWIP_ASSERT("already writing or closing", msg->conn->current_msg == NULL &&
AdamGreen 0:3b00827bb0b7 852 msg->conn->write_offset == 0);
AdamGreen 0:3b00827bb0b7 853 msg->conn->state = NETCONN_CLOSE;
AdamGreen 0:3b00827bb0b7 854 msg->msg.sd.shut = NETCONN_SHUT_RDWR;
AdamGreen 0:3b00827bb0b7 855 msg->conn->current_msg = msg;
AdamGreen 0:3b00827bb0b7 856 do_close_internal(msg->conn);
AdamGreen 0:3b00827bb0b7 857 /* API_EVENT is called inside do_close_internal, before releasing
AdamGreen 0:3b00827bb0b7 858 the application thread, so we can return at this point! */
AdamGreen 0:3b00827bb0b7 859 return;
AdamGreen 0:3b00827bb0b7 860 #endif /* LWIP_TCP */
AdamGreen 0:3b00827bb0b7 861 default:
AdamGreen 0:3b00827bb0b7 862 break;
AdamGreen 0:3b00827bb0b7 863 }
AdamGreen 0:3b00827bb0b7 864 msg->conn->pcb.tcp = NULL;
AdamGreen 0:3b00827bb0b7 865 }
AdamGreen 0:3b00827bb0b7 866 /* tcp netconns don't come here! */
AdamGreen 0:3b00827bb0b7 867
AdamGreen 0:3b00827bb0b7 868 /* @todo: this lets select make the socket readable and writable,
AdamGreen 0:3b00827bb0b7 869 which is wrong! errfd instead? */
AdamGreen 0:3b00827bb0b7 870 API_EVENT(msg->conn, NETCONN_EVT_RCVPLUS, 0);
AdamGreen 0:3b00827bb0b7 871 API_EVENT(msg->conn, NETCONN_EVT_SENDPLUS, 0);
AdamGreen 0:3b00827bb0b7 872 }
AdamGreen 0:3b00827bb0b7 873 if (sys_sem_valid(&msg->conn->op_completed)) {
AdamGreen 0:3b00827bb0b7 874 sys_sem_signal(&msg->conn->op_completed);
AdamGreen 0:3b00827bb0b7 875 }
AdamGreen 0:3b00827bb0b7 876 }
AdamGreen 0:3b00827bb0b7 877
AdamGreen 0:3b00827bb0b7 878 /**
AdamGreen 0:3b00827bb0b7 879 * Bind a pcb contained in a netconn
AdamGreen 0:3b00827bb0b7 880 * Called from netconn_bind.
AdamGreen 0:3b00827bb0b7 881 *
AdamGreen 0:3b00827bb0b7 882 * @param msg the api_msg_msg pointing to the connection and containing
AdamGreen 0:3b00827bb0b7 883 * the IP address and port to bind to
AdamGreen 0:3b00827bb0b7 884 */
AdamGreen 0:3b00827bb0b7 885 void
AdamGreen 0:3b00827bb0b7 886 do_bind(struct api_msg_msg *msg)
AdamGreen 0:3b00827bb0b7 887 {
AdamGreen 0:3b00827bb0b7 888 if (ERR_IS_FATAL(msg->conn->last_err)) {
AdamGreen 0:3b00827bb0b7 889 msg->err = msg->conn->last_err;
AdamGreen 0:3b00827bb0b7 890 } else {
AdamGreen 0:3b00827bb0b7 891 msg->err = ERR_VAL;
AdamGreen 0:3b00827bb0b7 892 if (msg->conn->pcb.tcp != NULL) {
AdamGreen 0:3b00827bb0b7 893 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
AdamGreen 0:3b00827bb0b7 894 #if LWIP_RAW
AdamGreen 0:3b00827bb0b7 895 case NETCONN_RAW:
AdamGreen 0:3b00827bb0b7 896 msg->err = raw_bind(msg->conn->pcb.raw, msg->msg.bc.ipaddr);
AdamGreen 0:3b00827bb0b7 897 break;
AdamGreen 0:3b00827bb0b7 898 #endif /* LWIP_RAW */
AdamGreen 0:3b00827bb0b7 899 #if LWIP_UDP
AdamGreen 0:3b00827bb0b7 900 case NETCONN_UDP:
AdamGreen 0:3b00827bb0b7 901 msg->err = udp_bind(msg->conn->pcb.udp, msg->msg.bc.ipaddr, msg->msg.bc.port);
AdamGreen 0:3b00827bb0b7 902 break;
AdamGreen 0:3b00827bb0b7 903 #endif /* LWIP_UDP */
AdamGreen 0:3b00827bb0b7 904 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 905 case NETCONN_TCP:
AdamGreen 0:3b00827bb0b7 906 msg->err = tcp_bind(msg->conn->pcb.tcp, msg->msg.bc.ipaddr, msg->msg.bc.port);
AdamGreen 0:3b00827bb0b7 907 break;
AdamGreen 0:3b00827bb0b7 908 #endif /* LWIP_TCP */
AdamGreen 0:3b00827bb0b7 909 default:
AdamGreen 0:3b00827bb0b7 910 break;
AdamGreen 0:3b00827bb0b7 911 }
AdamGreen 0:3b00827bb0b7 912 }
AdamGreen 0:3b00827bb0b7 913 }
AdamGreen 0:3b00827bb0b7 914 TCPIP_APIMSG_ACK(msg);
AdamGreen 0:3b00827bb0b7 915 }
AdamGreen 0:3b00827bb0b7 916
AdamGreen 0:3b00827bb0b7 917 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 918 /**
AdamGreen 0:3b00827bb0b7 919 * TCP callback function if a connection (opened by tcp_connect/do_connect) has
AdamGreen 0:3b00827bb0b7 920 * been established (or reset by the remote host).
AdamGreen 0:3b00827bb0b7 921 *
AdamGreen 0:3b00827bb0b7 922 * @see tcp.h (struct tcp_pcb.connected) for parameters and return values
AdamGreen 0:3b00827bb0b7 923 */
AdamGreen 0:3b00827bb0b7 924 static err_t
AdamGreen 0:3b00827bb0b7 925 do_connected(void *arg, struct tcp_pcb *pcb, err_t err)
AdamGreen 0:3b00827bb0b7 926 {
AdamGreen 0:3b00827bb0b7 927 struct netconn *conn;
AdamGreen 0:3b00827bb0b7 928 int was_blocking;
AdamGreen 0:3b00827bb0b7 929
AdamGreen 0:3b00827bb0b7 930 LWIP_UNUSED_ARG(pcb);
AdamGreen 0:3b00827bb0b7 931
AdamGreen 0:3b00827bb0b7 932 conn = (struct netconn *)arg;
AdamGreen 0:3b00827bb0b7 933
AdamGreen 0:3b00827bb0b7 934 if (conn == NULL) {
AdamGreen 0:3b00827bb0b7 935 return ERR_VAL;
AdamGreen 0:3b00827bb0b7 936 }
AdamGreen 0:3b00827bb0b7 937
AdamGreen 0:3b00827bb0b7 938 LWIP_ASSERT("conn->state == NETCONN_CONNECT", conn->state == NETCONN_CONNECT);
AdamGreen 0:3b00827bb0b7 939 LWIP_ASSERT("(conn->current_msg != NULL) || conn->in_non_blocking_connect",
AdamGreen 0:3b00827bb0b7 940 (conn->current_msg != NULL) || IN_NONBLOCKING_CONNECT(conn));
AdamGreen 0:3b00827bb0b7 941
AdamGreen 0:3b00827bb0b7 942 if (conn->current_msg != NULL) {
AdamGreen 0:3b00827bb0b7 943 conn->current_msg->err = err;
AdamGreen 0:3b00827bb0b7 944 }
AdamGreen 0:3b00827bb0b7 945 if ((conn->type == NETCONN_TCP) && (err == ERR_OK)) {
AdamGreen 0:3b00827bb0b7 946 setup_tcp(conn);
AdamGreen 0:3b00827bb0b7 947 }
AdamGreen 0:3b00827bb0b7 948 was_blocking = !IN_NONBLOCKING_CONNECT(conn);
AdamGreen 0:3b00827bb0b7 949 SET_NONBLOCKING_CONNECT(conn, 0);
AdamGreen 0:3b00827bb0b7 950 conn->current_msg = NULL;
AdamGreen 0:3b00827bb0b7 951 conn->state = NETCONN_NONE;
AdamGreen 0:3b00827bb0b7 952 if (!was_blocking) {
AdamGreen 0:3b00827bb0b7 953 NETCONN_SET_SAFE_ERR(conn, ERR_OK);
AdamGreen 0:3b00827bb0b7 954 }
AdamGreen 0:3b00827bb0b7 955 API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
AdamGreen 0:3b00827bb0b7 956
AdamGreen 0:3b00827bb0b7 957 if (was_blocking) {
AdamGreen 0:3b00827bb0b7 958 sys_sem_signal(&conn->op_completed);
AdamGreen 0:3b00827bb0b7 959 }
AdamGreen 0:3b00827bb0b7 960 return ERR_OK;
AdamGreen 0:3b00827bb0b7 961 }
AdamGreen 0:3b00827bb0b7 962 #endif /* LWIP_TCP */
AdamGreen 0:3b00827bb0b7 963
AdamGreen 0:3b00827bb0b7 964 /**
AdamGreen 0:3b00827bb0b7 965 * Connect a pcb contained inside a netconn
AdamGreen 0:3b00827bb0b7 966 * Called from netconn_connect.
AdamGreen 0:3b00827bb0b7 967 *
AdamGreen 0:3b00827bb0b7 968 * @param msg the api_msg_msg pointing to the connection and containing
AdamGreen 0:3b00827bb0b7 969 * the IP address and port to connect to
AdamGreen 0:3b00827bb0b7 970 */
AdamGreen 0:3b00827bb0b7 971 void
AdamGreen 0:3b00827bb0b7 972 do_connect(struct api_msg_msg *msg)
AdamGreen 0:3b00827bb0b7 973 {
AdamGreen 0:3b00827bb0b7 974 if (msg->conn->pcb.tcp == NULL) {
AdamGreen 0:3b00827bb0b7 975 /* This may happen when calling netconn_connect() a second time */
AdamGreen 0:3b00827bb0b7 976 msg->err = ERR_CLSD;
AdamGreen 0:3b00827bb0b7 977 } else {
AdamGreen 0:3b00827bb0b7 978 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
AdamGreen 0:3b00827bb0b7 979 #if LWIP_RAW
AdamGreen 0:3b00827bb0b7 980 case NETCONN_RAW:
AdamGreen 0:3b00827bb0b7 981 msg->err = raw_connect(msg->conn->pcb.raw, msg->msg.bc.ipaddr);
AdamGreen 0:3b00827bb0b7 982 break;
AdamGreen 0:3b00827bb0b7 983 #endif /* LWIP_RAW */
AdamGreen 0:3b00827bb0b7 984 #if LWIP_UDP
AdamGreen 0:3b00827bb0b7 985 case NETCONN_UDP:
AdamGreen 0:3b00827bb0b7 986 msg->err = udp_connect(msg->conn->pcb.udp, msg->msg.bc.ipaddr, msg->msg.bc.port);
AdamGreen 0:3b00827bb0b7 987 break;
AdamGreen 0:3b00827bb0b7 988 #endif /* LWIP_UDP */
AdamGreen 0:3b00827bb0b7 989 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 990 case NETCONN_TCP:
AdamGreen 0:3b00827bb0b7 991 /* Prevent connect while doing any other action. */
AdamGreen 0:3b00827bb0b7 992 if (msg->conn->state != NETCONN_NONE) {
AdamGreen 0:3b00827bb0b7 993 msg->err = ERR_ISCONN;
AdamGreen 0:3b00827bb0b7 994 } else {
AdamGreen 0:3b00827bb0b7 995 setup_tcp(msg->conn);
AdamGreen 0:3b00827bb0b7 996 msg->err = tcp_connect(msg->conn->pcb.tcp, msg->msg.bc.ipaddr,
AdamGreen 0:3b00827bb0b7 997 msg->msg.bc.port, do_connected);
AdamGreen 0:3b00827bb0b7 998 if (msg->err == ERR_OK) {
AdamGreen 0:3b00827bb0b7 999 u8_t non_blocking = netconn_is_nonblocking(msg->conn);
AdamGreen 0:3b00827bb0b7 1000 msg->conn->state = NETCONN_CONNECT;
AdamGreen 0:3b00827bb0b7 1001 SET_NONBLOCKING_CONNECT(msg->conn, non_blocking);
AdamGreen 0:3b00827bb0b7 1002 if (non_blocking) {
AdamGreen 0:3b00827bb0b7 1003 msg->err = ERR_INPROGRESS;
AdamGreen 0:3b00827bb0b7 1004 } else {
AdamGreen 0:3b00827bb0b7 1005 msg->conn->current_msg = msg;
AdamGreen 0:3b00827bb0b7 1006 /* sys_sem_signal() is called from do_connected (or err_tcp()),
AdamGreen 0:3b00827bb0b7 1007 * when the connection is established! */
AdamGreen 0:3b00827bb0b7 1008 return;
AdamGreen 0:3b00827bb0b7 1009 }
AdamGreen 0:3b00827bb0b7 1010 }
AdamGreen 0:3b00827bb0b7 1011 }
AdamGreen 0:3b00827bb0b7 1012 break;
AdamGreen 0:3b00827bb0b7 1013 #endif /* LWIP_TCP */
AdamGreen 0:3b00827bb0b7 1014 default:
AdamGreen 0:3b00827bb0b7 1015 LWIP_ERROR("Invalid netconn type", 0, do{ msg->err = ERR_VAL; }while(0));
AdamGreen 0:3b00827bb0b7 1016 break;
AdamGreen 0:3b00827bb0b7 1017 }
AdamGreen 0:3b00827bb0b7 1018 }
AdamGreen 0:3b00827bb0b7 1019 sys_sem_signal(&msg->conn->op_completed);
AdamGreen 0:3b00827bb0b7 1020 }
AdamGreen 0:3b00827bb0b7 1021
AdamGreen 0:3b00827bb0b7 1022 /**
AdamGreen 0:3b00827bb0b7 1023 * Connect a pcb contained inside a netconn
AdamGreen 0:3b00827bb0b7 1024 * Only used for UDP netconns.
AdamGreen 0:3b00827bb0b7 1025 * Called from netconn_disconnect.
AdamGreen 0:3b00827bb0b7 1026 *
AdamGreen 0:3b00827bb0b7 1027 * @param msg the api_msg_msg pointing to the connection to disconnect
AdamGreen 0:3b00827bb0b7 1028 */
AdamGreen 0:3b00827bb0b7 1029 void
AdamGreen 0:3b00827bb0b7 1030 do_disconnect(struct api_msg_msg *msg)
AdamGreen 0:3b00827bb0b7 1031 {
AdamGreen 0:3b00827bb0b7 1032 #if LWIP_UDP
AdamGreen 0:3b00827bb0b7 1033 if (NETCONNTYPE_GROUP(msg->conn->type) == NETCONN_UDP) {
AdamGreen 0:3b00827bb0b7 1034 udp_disconnect(msg->conn->pcb.udp);
AdamGreen 0:3b00827bb0b7 1035 msg->err = ERR_OK;
AdamGreen 0:3b00827bb0b7 1036 } else
AdamGreen 0:3b00827bb0b7 1037 #endif /* LWIP_UDP */
AdamGreen 0:3b00827bb0b7 1038 {
AdamGreen 0:3b00827bb0b7 1039 msg->err = ERR_VAL;
AdamGreen 0:3b00827bb0b7 1040 }
AdamGreen 0:3b00827bb0b7 1041 TCPIP_APIMSG_ACK(msg);
AdamGreen 0:3b00827bb0b7 1042 }
AdamGreen 0:3b00827bb0b7 1043
AdamGreen 0:3b00827bb0b7 1044 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 1045 /**
AdamGreen 0:3b00827bb0b7 1046 * Set a TCP pcb contained in a netconn into listen mode
AdamGreen 0:3b00827bb0b7 1047 * Called from netconn_listen.
AdamGreen 0:3b00827bb0b7 1048 *
AdamGreen 0:3b00827bb0b7 1049 * @param msg the api_msg_msg pointing to the connection
AdamGreen 0:3b00827bb0b7 1050 */
AdamGreen 0:3b00827bb0b7 1051 void
AdamGreen 0:3b00827bb0b7 1052 do_listen(struct api_msg_msg *msg)
AdamGreen 0:3b00827bb0b7 1053 {
AdamGreen 0:3b00827bb0b7 1054 if (ERR_IS_FATAL(msg->conn->last_err)) {
AdamGreen 0:3b00827bb0b7 1055 msg->err = msg->conn->last_err;
AdamGreen 0:3b00827bb0b7 1056 } else {
AdamGreen 0:3b00827bb0b7 1057 msg->err = ERR_CONN;
AdamGreen 0:3b00827bb0b7 1058 if (msg->conn->pcb.tcp != NULL) {
AdamGreen 0:3b00827bb0b7 1059 if (msg->conn->type == NETCONN_TCP) {
AdamGreen 0:3b00827bb0b7 1060 if (msg->conn->state == NETCONN_NONE) {
AdamGreen 0:3b00827bb0b7 1061 #if TCP_LISTEN_BACKLOG
AdamGreen 0:3b00827bb0b7 1062 struct tcp_pcb* lpcb = tcp_listen_with_backlog(msg->conn->pcb.tcp, msg->msg.lb.backlog);
AdamGreen 0:3b00827bb0b7 1063 #else /* TCP_LISTEN_BACKLOG */
AdamGreen 0:3b00827bb0b7 1064 struct tcp_pcb* lpcb = tcp_listen(msg->conn->pcb.tcp);
AdamGreen 0:3b00827bb0b7 1065 #endif /* TCP_LISTEN_BACKLOG */
AdamGreen 0:3b00827bb0b7 1066 if (lpcb == NULL) {
AdamGreen 0:3b00827bb0b7 1067 /* in this case, the old pcb is still allocated */
AdamGreen 0:3b00827bb0b7 1068 msg->err = ERR_MEM;
AdamGreen 0:3b00827bb0b7 1069 } else {
AdamGreen 0:3b00827bb0b7 1070 /* delete the recvmbox and allocate the acceptmbox */
AdamGreen 0:3b00827bb0b7 1071 if (sys_mbox_valid(&msg->conn->recvmbox)) {
AdamGreen 0:3b00827bb0b7 1072 /** @todo: should we drain the recvmbox here? */
AdamGreen 0:3b00827bb0b7 1073 sys_mbox_free(&msg->conn->recvmbox);
AdamGreen 0:3b00827bb0b7 1074 sys_mbox_set_invalid(&msg->conn->recvmbox);
AdamGreen 0:3b00827bb0b7 1075 }
AdamGreen 0:3b00827bb0b7 1076 msg->err = ERR_OK;
AdamGreen 0:3b00827bb0b7 1077 if (!sys_mbox_valid(&msg->conn->acceptmbox)) {
AdamGreen 0:3b00827bb0b7 1078 msg->err = sys_mbox_new(&msg->conn->acceptmbox, DEFAULT_ACCEPTMBOX_SIZE);
AdamGreen 0:3b00827bb0b7 1079 }
AdamGreen 0:3b00827bb0b7 1080 if (msg->err == ERR_OK) {
AdamGreen 0:3b00827bb0b7 1081 msg->conn->state = NETCONN_LISTEN;
AdamGreen 0:3b00827bb0b7 1082 msg->conn->pcb.tcp = lpcb;
AdamGreen 0:3b00827bb0b7 1083 tcp_arg(msg->conn->pcb.tcp, msg->conn);
AdamGreen 0:3b00827bb0b7 1084 tcp_accept(msg->conn->pcb.tcp, accept_function);
AdamGreen 0:3b00827bb0b7 1085 } else {
AdamGreen 0:3b00827bb0b7 1086 /* since the old pcb is already deallocated, free lpcb now */
AdamGreen 0:3b00827bb0b7 1087 tcp_close(lpcb);
AdamGreen 0:3b00827bb0b7 1088 msg->conn->pcb.tcp = NULL;
AdamGreen 0:3b00827bb0b7 1089 }
AdamGreen 0:3b00827bb0b7 1090 }
AdamGreen 0:3b00827bb0b7 1091 }
AdamGreen 0:3b00827bb0b7 1092 }
AdamGreen 0:3b00827bb0b7 1093 }
AdamGreen 0:3b00827bb0b7 1094 }
AdamGreen 0:3b00827bb0b7 1095 TCPIP_APIMSG_ACK(msg);
AdamGreen 0:3b00827bb0b7 1096 }
AdamGreen 0:3b00827bb0b7 1097 #endif /* LWIP_TCP */
AdamGreen 0:3b00827bb0b7 1098
AdamGreen 0:3b00827bb0b7 1099 /**
AdamGreen 0:3b00827bb0b7 1100 * Send some data on a RAW or UDP pcb contained in a netconn
AdamGreen 0:3b00827bb0b7 1101 * Called from netconn_send
AdamGreen 0:3b00827bb0b7 1102 *
AdamGreen 0:3b00827bb0b7 1103 * @param msg the api_msg_msg pointing to the connection
AdamGreen 0:3b00827bb0b7 1104 */
AdamGreen 0:3b00827bb0b7 1105 void
AdamGreen 0:3b00827bb0b7 1106 do_send(struct api_msg_msg *msg)
AdamGreen 0:3b00827bb0b7 1107 {
AdamGreen 0:3b00827bb0b7 1108 if (ERR_IS_FATAL(msg->conn->last_err)) {
AdamGreen 0:3b00827bb0b7 1109 msg->err = msg->conn->last_err;
AdamGreen 0:3b00827bb0b7 1110 } else {
AdamGreen 0:3b00827bb0b7 1111 msg->err = ERR_CONN;
AdamGreen 0:3b00827bb0b7 1112 if (msg->conn->pcb.tcp != NULL) {
AdamGreen 0:3b00827bb0b7 1113 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
AdamGreen 0:3b00827bb0b7 1114 #if LWIP_RAW
AdamGreen 0:3b00827bb0b7 1115 case NETCONN_RAW:
AdamGreen 0:3b00827bb0b7 1116 if (ip_addr_isany(&msg->msg.b->addr)) {
AdamGreen 0:3b00827bb0b7 1117 msg->err = raw_send(msg->conn->pcb.raw, msg->msg.b->p);
AdamGreen 0:3b00827bb0b7 1118 } else {
AdamGreen 0:3b00827bb0b7 1119 msg->err = raw_sendto(msg->conn->pcb.raw, msg->msg.b->p, &msg->msg.b->addr);
AdamGreen 0:3b00827bb0b7 1120 }
AdamGreen 0:3b00827bb0b7 1121 break;
AdamGreen 0:3b00827bb0b7 1122 #endif
AdamGreen 0:3b00827bb0b7 1123 #if LWIP_UDP
AdamGreen 0:3b00827bb0b7 1124 case NETCONN_UDP:
AdamGreen 0:3b00827bb0b7 1125 #if LWIP_CHECKSUM_ON_COPY
AdamGreen 0:3b00827bb0b7 1126 if (ip_addr_isany(&msg->msg.b->addr)) {
AdamGreen 0:3b00827bb0b7 1127 msg->err = udp_send_chksum(msg->conn->pcb.udp, msg->msg.b->p,
AdamGreen 0:3b00827bb0b7 1128 msg->msg.b->flags & NETBUF_FLAG_CHKSUM, msg->msg.b->toport_chksum);
AdamGreen 0:3b00827bb0b7 1129 } else {
AdamGreen 0:3b00827bb0b7 1130 msg->err = udp_sendto_chksum(msg->conn->pcb.udp, msg->msg.b->p,
AdamGreen 0:3b00827bb0b7 1131 &msg->msg.b->addr, msg->msg.b->port,
AdamGreen 0:3b00827bb0b7 1132 msg->msg.b->flags & NETBUF_FLAG_CHKSUM, msg->msg.b->toport_chksum);
AdamGreen 0:3b00827bb0b7 1133 }
AdamGreen 0:3b00827bb0b7 1134 #else /* LWIP_CHECKSUM_ON_COPY */
AdamGreen 0:3b00827bb0b7 1135 if (ip_addr_isany(&msg->msg.b->addr)) {
AdamGreen 0:3b00827bb0b7 1136 msg->err = udp_send(msg->conn->pcb.udp, msg->msg.b->p);
AdamGreen 0:3b00827bb0b7 1137 } else {
AdamGreen 0:3b00827bb0b7 1138 msg->err = udp_sendto(msg->conn->pcb.udp, msg->msg.b->p, &msg->msg.b->addr, msg->msg.b->port);
AdamGreen 0:3b00827bb0b7 1139 }
AdamGreen 0:3b00827bb0b7 1140 #endif /* LWIP_CHECKSUM_ON_COPY */
AdamGreen 0:3b00827bb0b7 1141 break;
AdamGreen 0:3b00827bb0b7 1142 #endif /* LWIP_UDP */
AdamGreen 0:3b00827bb0b7 1143 default:
AdamGreen 0:3b00827bb0b7 1144 break;
AdamGreen 0:3b00827bb0b7 1145 }
AdamGreen 0:3b00827bb0b7 1146 }
AdamGreen 0:3b00827bb0b7 1147 }
AdamGreen 0:3b00827bb0b7 1148 TCPIP_APIMSG_ACK(msg);
AdamGreen 0:3b00827bb0b7 1149 }
AdamGreen 0:3b00827bb0b7 1150
AdamGreen 0:3b00827bb0b7 1151 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 1152 /**
AdamGreen 0:3b00827bb0b7 1153 * Indicate data has been received from a TCP pcb contained in a netconn
AdamGreen 0:3b00827bb0b7 1154 * Called from netconn_recv
AdamGreen 0:3b00827bb0b7 1155 *
AdamGreen 0:3b00827bb0b7 1156 * @param msg the api_msg_msg pointing to the connection
AdamGreen 0:3b00827bb0b7 1157 */
AdamGreen 0:3b00827bb0b7 1158 void
AdamGreen 0:3b00827bb0b7 1159 do_recv(struct api_msg_msg *msg)
AdamGreen 0:3b00827bb0b7 1160 {
AdamGreen 0:3b00827bb0b7 1161 msg->err = ERR_OK;
AdamGreen 0:3b00827bb0b7 1162 if (msg->conn->pcb.tcp != NULL) {
AdamGreen 0:3b00827bb0b7 1163 if (msg->conn->type == NETCONN_TCP) {
AdamGreen 0:3b00827bb0b7 1164 #if TCP_LISTEN_BACKLOG
AdamGreen 0:3b00827bb0b7 1165 if (msg->conn->pcb.tcp->state == LISTEN) {
AdamGreen 0:3b00827bb0b7 1166 tcp_accepted(msg->conn->pcb.tcp);
AdamGreen 0:3b00827bb0b7 1167 } else
AdamGreen 0:3b00827bb0b7 1168 #endif /* TCP_LISTEN_BACKLOG */
AdamGreen 0:3b00827bb0b7 1169 {
AdamGreen 0:3b00827bb0b7 1170 u32_t remaining = msg->msg.r.len;
AdamGreen 0:3b00827bb0b7 1171 do {
AdamGreen 0:3b00827bb0b7 1172 u16_t recved = (remaining > 0xffff) ? 0xffff : (u16_t)remaining;
AdamGreen 0:3b00827bb0b7 1173 tcp_recved(msg->conn->pcb.tcp, recved);
AdamGreen 0:3b00827bb0b7 1174 remaining -= recved;
AdamGreen 0:3b00827bb0b7 1175 }while(remaining != 0);
AdamGreen 0:3b00827bb0b7 1176 }
AdamGreen 0:3b00827bb0b7 1177 }
AdamGreen 0:3b00827bb0b7 1178 }
AdamGreen 0:3b00827bb0b7 1179 TCPIP_APIMSG_ACK(msg);
AdamGreen 0:3b00827bb0b7 1180 }
AdamGreen 0:3b00827bb0b7 1181
AdamGreen 0:3b00827bb0b7 1182 /**
AdamGreen 0:3b00827bb0b7 1183 * See if more data needs to be written from a previous call to netconn_write.
AdamGreen 0:3b00827bb0b7 1184 * Called initially from do_write. If the first call can't send all data
AdamGreen 0:3b00827bb0b7 1185 * (because of low memory or empty send-buffer), this function is called again
AdamGreen 0:3b00827bb0b7 1186 * from sent_tcp() or poll_tcp() to send more data. If all data is sent, the
AdamGreen 0:3b00827bb0b7 1187 * blocking application thread (waiting in netconn_write) is released.
AdamGreen 0:3b00827bb0b7 1188 *
AdamGreen 0:3b00827bb0b7 1189 * @param conn netconn (that is currently in state NETCONN_WRITE) to process
AdamGreen 0:3b00827bb0b7 1190 * @return ERR_OK
AdamGreen 0:3b00827bb0b7 1191 * ERR_MEM if LWIP_TCPIP_CORE_LOCKING=1 and sending hasn't yet finished
AdamGreen 0:3b00827bb0b7 1192 */
AdamGreen 0:3b00827bb0b7 1193 static err_t
AdamGreen 0:3b00827bb0b7 1194 do_writemore(struct netconn *conn)
AdamGreen 0:3b00827bb0b7 1195 {
AdamGreen 0:3b00827bb0b7 1196 err_t err = ERR_OK;
AdamGreen 0:3b00827bb0b7 1197 void *dataptr;
AdamGreen 0:3b00827bb0b7 1198 u16_t len, available;
AdamGreen 0:3b00827bb0b7 1199 u8_t write_finished = 0;
AdamGreen 0:3b00827bb0b7 1200 size_t diff;
AdamGreen 0:3b00827bb0b7 1201 u8_t dontblock = netconn_is_nonblocking(conn) ||
AdamGreen 0:3b00827bb0b7 1202 (conn->current_msg->msg.w.apiflags & NETCONN_DONTBLOCK);
AdamGreen 0:3b00827bb0b7 1203 u8_t apiflags = conn->current_msg->msg.w.apiflags;
AdamGreen 0:3b00827bb0b7 1204
AdamGreen 0:3b00827bb0b7 1205 LWIP_ASSERT("conn != NULL", conn != NULL);
AdamGreen 0:3b00827bb0b7 1206 LWIP_ASSERT("conn->state == NETCONN_WRITE", (conn->state == NETCONN_WRITE));
AdamGreen 0:3b00827bb0b7 1207 LWIP_ASSERT("conn->current_msg != NULL", conn->current_msg != NULL);
AdamGreen 0:3b00827bb0b7 1208 LWIP_ASSERT("conn->pcb.tcp != NULL", conn->pcb.tcp != NULL);
AdamGreen 0:3b00827bb0b7 1209 LWIP_ASSERT("conn->write_offset < conn->current_msg->msg.w.len",
AdamGreen 0:3b00827bb0b7 1210 conn->write_offset < conn->current_msg->msg.w.len);
AdamGreen 0:3b00827bb0b7 1211
AdamGreen 0:3b00827bb0b7 1212 dataptr = (u8_t*)conn->current_msg->msg.w.dataptr + conn->write_offset;
AdamGreen 0:3b00827bb0b7 1213 diff = conn->current_msg->msg.w.len - conn->write_offset;
AdamGreen 0:3b00827bb0b7 1214 if (diff > 0xffffUL) { /* max_u16_t */
AdamGreen 0:3b00827bb0b7 1215 len = 0xffff;
AdamGreen 0:3b00827bb0b7 1216 #if LWIP_TCPIP_CORE_LOCKING
AdamGreen 0:3b00827bb0b7 1217 conn->flags |= NETCONN_FLAG_WRITE_DELAYED;
AdamGreen 0:3b00827bb0b7 1218 #endif
AdamGreen 0:3b00827bb0b7 1219 apiflags |= TCP_WRITE_FLAG_MORE;
AdamGreen 0:3b00827bb0b7 1220 } else {
AdamGreen 0:3b00827bb0b7 1221 len = (u16_t)diff;
AdamGreen 0:3b00827bb0b7 1222 }
AdamGreen 0:3b00827bb0b7 1223 available = tcp_sndbuf(conn->pcb.tcp);
AdamGreen 0:3b00827bb0b7 1224 if (available < len) {
AdamGreen 0:3b00827bb0b7 1225 /* don't try to write more than sendbuf */
AdamGreen 0:3b00827bb0b7 1226 len = available;
AdamGreen 0:3b00827bb0b7 1227 #if LWIP_TCPIP_CORE_LOCKING
AdamGreen 0:3b00827bb0b7 1228 conn->flags |= NETCONN_FLAG_WRITE_DELAYED;
AdamGreen 0:3b00827bb0b7 1229 #endif
AdamGreen 0:3b00827bb0b7 1230 apiflags |= TCP_WRITE_FLAG_MORE;
AdamGreen 0:3b00827bb0b7 1231 }
AdamGreen 0:3b00827bb0b7 1232 if (dontblock && (len < conn->current_msg->msg.w.len)) {
AdamGreen 0:3b00827bb0b7 1233 /* failed to send all data at once -> nonblocking write not possible */
AdamGreen 0:3b00827bb0b7 1234 err = ERR_MEM;
AdamGreen 0:3b00827bb0b7 1235 }
AdamGreen 0:3b00827bb0b7 1236 if (err == ERR_OK) {
AdamGreen 0:3b00827bb0b7 1237 LWIP_ASSERT("do_writemore: invalid length!", ((conn->write_offset + len) <= conn->current_msg->msg.w.len));
AdamGreen 0:3b00827bb0b7 1238 err = tcp_write(conn->pcb.tcp, dataptr, len, apiflags);
AdamGreen 0:3b00827bb0b7 1239 }
AdamGreen 0:3b00827bb0b7 1240 if (dontblock && (err == ERR_MEM)) {
AdamGreen 0:3b00827bb0b7 1241 /* nonblocking write failed */
AdamGreen 0:3b00827bb0b7 1242 write_finished = 1;
AdamGreen 0:3b00827bb0b7 1243 err = ERR_WOULDBLOCK;
AdamGreen 0:3b00827bb0b7 1244 /* let poll_tcp check writable space to mark the pcb
AdamGreen 0:3b00827bb0b7 1245 writable again */
AdamGreen 0:3b00827bb0b7 1246 conn->flags |= NETCONN_FLAG_CHECK_WRITESPACE;
AdamGreen 0:3b00827bb0b7 1247 /* let select mark this pcb as non-writable. */
AdamGreen 0:3b00827bb0b7 1248 API_EVENT(conn, NETCONN_EVT_SENDMINUS, len);
AdamGreen 0:3b00827bb0b7 1249 } else {
AdamGreen 0:3b00827bb0b7 1250 /* if OK or memory error, check available space */
AdamGreen 0:3b00827bb0b7 1251 if (((err == ERR_OK) || (err == ERR_MEM)) &&
AdamGreen 0:3b00827bb0b7 1252 ((tcp_sndbuf(conn->pcb.tcp) <= TCP_SNDLOWAT) ||
AdamGreen 0:3b00827bb0b7 1253 (tcp_sndqueuelen(conn->pcb.tcp) >= TCP_SNDQUEUELOWAT))) {
AdamGreen 0:3b00827bb0b7 1254 /* The queued byte- or pbuf-count exceeds the configured low-water limit,
AdamGreen 0:3b00827bb0b7 1255 let select mark this pcb as non-writable. */
AdamGreen 0:3b00827bb0b7 1256 API_EVENT(conn, NETCONN_EVT_SENDMINUS, len);
AdamGreen 0:3b00827bb0b7 1257 }
AdamGreen 0:3b00827bb0b7 1258
AdamGreen 0:3b00827bb0b7 1259 if (err == ERR_OK) {
AdamGreen 0:3b00827bb0b7 1260 conn->write_offset += len;
AdamGreen 0:3b00827bb0b7 1261 if (conn->write_offset == conn->current_msg->msg.w.len) {
AdamGreen 0:3b00827bb0b7 1262 /* everything was written */
AdamGreen 0:3b00827bb0b7 1263 write_finished = 1;
AdamGreen 0:3b00827bb0b7 1264 conn->write_offset = 0;
AdamGreen 0:3b00827bb0b7 1265 }
AdamGreen 0:3b00827bb0b7 1266 tcp_output(conn->pcb.tcp);
AdamGreen 0:3b00827bb0b7 1267 } else if (err == ERR_MEM) {
AdamGreen 0:3b00827bb0b7 1268 /* If ERR_MEM, we wait for sent_tcp or poll_tcp to be called
AdamGreen 0:3b00827bb0b7 1269 we do NOT return to the application thread, since ERR_MEM is
AdamGreen 0:3b00827bb0b7 1270 only a temporary error! */
AdamGreen 0:3b00827bb0b7 1271
AdamGreen 0:3b00827bb0b7 1272 /* tcp_write returned ERR_MEM, try tcp_output anyway */
AdamGreen 0:3b00827bb0b7 1273 tcp_output(conn->pcb.tcp);
AdamGreen 0:3b00827bb0b7 1274
AdamGreen 0:3b00827bb0b7 1275 #if LWIP_TCPIP_CORE_LOCKING
AdamGreen 0:3b00827bb0b7 1276 conn->flags |= NETCONN_FLAG_WRITE_DELAYED;
AdamGreen 0:3b00827bb0b7 1277 #endif
AdamGreen 0:3b00827bb0b7 1278 } else {
AdamGreen 0:3b00827bb0b7 1279 /* On errors != ERR_MEM, we don't try writing any more but return
AdamGreen 0:3b00827bb0b7 1280 the error to the application thread. */
AdamGreen 0:3b00827bb0b7 1281 write_finished = 1;
AdamGreen 0:3b00827bb0b7 1282 }
AdamGreen 0:3b00827bb0b7 1283 }
AdamGreen 0:3b00827bb0b7 1284
AdamGreen 0:3b00827bb0b7 1285 if (write_finished) {
AdamGreen 0:3b00827bb0b7 1286 /* everything was written: set back connection state
AdamGreen 0:3b00827bb0b7 1287 and back to application task */
AdamGreen 0:3b00827bb0b7 1288 conn->current_msg->err = err;
AdamGreen 0:3b00827bb0b7 1289 conn->current_msg = NULL;
AdamGreen 0:3b00827bb0b7 1290 conn->state = NETCONN_NONE;
AdamGreen 0:3b00827bb0b7 1291 #if LWIP_TCPIP_CORE_LOCKING
AdamGreen 0:3b00827bb0b7 1292 if ((conn->flags & NETCONN_FLAG_WRITE_DELAYED) != 0)
AdamGreen 0:3b00827bb0b7 1293 #endif
AdamGreen 0:3b00827bb0b7 1294 {
AdamGreen 0:3b00827bb0b7 1295 sys_sem_signal(&conn->op_completed);
AdamGreen 0:3b00827bb0b7 1296 }
AdamGreen 0:3b00827bb0b7 1297 }
AdamGreen 0:3b00827bb0b7 1298 #if LWIP_TCPIP_CORE_LOCKING
AdamGreen 0:3b00827bb0b7 1299 else
AdamGreen 0:3b00827bb0b7 1300 return ERR_MEM;
AdamGreen 0:3b00827bb0b7 1301 #endif
AdamGreen 0:3b00827bb0b7 1302 return ERR_OK;
AdamGreen 0:3b00827bb0b7 1303 }
AdamGreen 0:3b00827bb0b7 1304 #endif /* LWIP_TCP */
AdamGreen 0:3b00827bb0b7 1305
AdamGreen 0:3b00827bb0b7 1306 /**
AdamGreen 0:3b00827bb0b7 1307 * Send some data on a TCP pcb contained in a netconn
AdamGreen 0:3b00827bb0b7 1308 * Called from netconn_write
AdamGreen 0:3b00827bb0b7 1309 *
AdamGreen 0:3b00827bb0b7 1310 * @param msg the api_msg_msg pointing to the connection
AdamGreen 0:3b00827bb0b7 1311 */
AdamGreen 0:3b00827bb0b7 1312 void
AdamGreen 0:3b00827bb0b7 1313 do_write(struct api_msg_msg *msg)
AdamGreen 0:3b00827bb0b7 1314 {
AdamGreen 0:3b00827bb0b7 1315 if (ERR_IS_FATAL(msg->conn->last_err)) {
AdamGreen 0:3b00827bb0b7 1316 msg->err = msg->conn->last_err;
AdamGreen 0:3b00827bb0b7 1317 } else {
AdamGreen 0:3b00827bb0b7 1318 if (msg->conn->type == NETCONN_TCP) {
AdamGreen 0:3b00827bb0b7 1319 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 1320 if (msg->conn->state != NETCONN_NONE) {
AdamGreen 0:3b00827bb0b7 1321 /* netconn is connecting, closing or in blocking write */
AdamGreen 0:3b00827bb0b7 1322 msg->err = ERR_INPROGRESS;
AdamGreen 0:3b00827bb0b7 1323 } else if (msg->conn->pcb.tcp != NULL) {
AdamGreen 0:3b00827bb0b7 1324 msg->conn->state = NETCONN_WRITE;
AdamGreen 0:3b00827bb0b7 1325 /* set all the variables used by do_writemore */
AdamGreen 0:3b00827bb0b7 1326 LWIP_ASSERT("already writing or closing", msg->conn->current_msg == NULL &&
AdamGreen 0:3b00827bb0b7 1327 msg->conn->write_offset == 0);
AdamGreen 0:3b00827bb0b7 1328 LWIP_ASSERT("msg->msg.w.len != 0", msg->msg.w.len != 0);
AdamGreen 0:3b00827bb0b7 1329 msg->conn->current_msg = msg;
AdamGreen 0:3b00827bb0b7 1330 msg->conn->write_offset = 0;
AdamGreen 0:3b00827bb0b7 1331 #if LWIP_TCPIP_CORE_LOCKING
AdamGreen 0:3b00827bb0b7 1332 msg->conn->flags &= ~NETCONN_FLAG_WRITE_DELAYED;
AdamGreen 0:3b00827bb0b7 1333 if (do_writemore(msg->conn) != ERR_OK) {
AdamGreen 0:3b00827bb0b7 1334 LWIP_ASSERT("state!", msg->conn->state == NETCONN_WRITE);
AdamGreen 0:3b00827bb0b7 1335 UNLOCK_TCPIP_CORE();
AdamGreen 0:3b00827bb0b7 1336 sys_arch_sem_wait(&msg->conn->op_completed, 0);
AdamGreen 0:3b00827bb0b7 1337 LOCK_TCPIP_CORE();
AdamGreen 0:3b00827bb0b7 1338 LWIP_ASSERT("state!", msg->conn->state == NETCONN_NONE);
AdamGreen 0:3b00827bb0b7 1339 }
AdamGreen 0:3b00827bb0b7 1340 #else /* LWIP_TCPIP_CORE_LOCKING */
AdamGreen 0:3b00827bb0b7 1341 do_writemore(msg->conn);
AdamGreen 0:3b00827bb0b7 1342 #endif /* LWIP_TCPIP_CORE_LOCKING */
AdamGreen 0:3b00827bb0b7 1343 /* for both cases: if do_writemore was called, don't ACK the APIMSG
AdamGreen 0:3b00827bb0b7 1344 since do_writemore ACKs it! */
AdamGreen 0:3b00827bb0b7 1345 return;
AdamGreen 0:3b00827bb0b7 1346 } else {
AdamGreen 0:3b00827bb0b7 1347 msg->err = ERR_CONN;
AdamGreen 0:3b00827bb0b7 1348 }
AdamGreen 0:3b00827bb0b7 1349 #else /* LWIP_TCP */
AdamGreen 0:3b00827bb0b7 1350 msg->err = ERR_VAL;
AdamGreen 0:3b00827bb0b7 1351 #endif /* LWIP_TCP */
AdamGreen 0:3b00827bb0b7 1352 #if (LWIP_UDP || LWIP_RAW)
AdamGreen 0:3b00827bb0b7 1353 } else {
AdamGreen 0:3b00827bb0b7 1354 msg->err = ERR_VAL;
AdamGreen 0:3b00827bb0b7 1355 #endif /* (LWIP_UDP || LWIP_RAW) */
AdamGreen 0:3b00827bb0b7 1356 }
AdamGreen 0:3b00827bb0b7 1357 }
AdamGreen 0:3b00827bb0b7 1358 TCPIP_APIMSG_ACK(msg);
AdamGreen 0:3b00827bb0b7 1359 }
AdamGreen 0:3b00827bb0b7 1360
AdamGreen 0:3b00827bb0b7 1361 /**
AdamGreen 0:3b00827bb0b7 1362 * Return a connection's local or remote address
AdamGreen 0:3b00827bb0b7 1363 * Called from netconn_getaddr
AdamGreen 0:3b00827bb0b7 1364 *
AdamGreen 0:3b00827bb0b7 1365 * @param msg the api_msg_msg pointing to the connection
AdamGreen 0:3b00827bb0b7 1366 */
AdamGreen 0:3b00827bb0b7 1367 void
AdamGreen 0:3b00827bb0b7 1368 do_getaddr(struct api_msg_msg *msg)
AdamGreen 0:3b00827bb0b7 1369 {
AdamGreen 0:3b00827bb0b7 1370 if (msg->conn->pcb.ip != NULL) {
AdamGreen 0:3b00827bb0b7 1371 *(msg->msg.ad.ipaddr) = (msg->msg.ad.local ? msg->conn->pcb.ip->local_ip :
AdamGreen 0:3b00827bb0b7 1372 msg->conn->pcb.ip->remote_ip);
AdamGreen 0:3b00827bb0b7 1373
AdamGreen 0:3b00827bb0b7 1374 msg->err = ERR_OK;
AdamGreen 0:3b00827bb0b7 1375 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
AdamGreen 0:3b00827bb0b7 1376 #if LWIP_RAW
AdamGreen 0:3b00827bb0b7 1377 case NETCONN_RAW:
AdamGreen 0:3b00827bb0b7 1378 if (msg->msg.ad.local) {
AdamGreen 0:3b00827bb0b7 1379 *(msg->msg.ad.port) = msg->conn->pcb.raw->protocol;
AdamGreen 0:3b00827bb0b7 1380 } else {
AdamGreen 0:3b00827bb0b7 1381 /* return an error as connecting is only a helper for upper layers */
AdamGreen 0:3b00827bb0b7 1382 msg->err = ERR_CONN;
AdamGreen 0:3b00827bb0b7 1383 }
AdamGreen 0:3b00827bb0b7 1384 break;
AdamGreen 0:3b00827bb0b7 1385 #endif /* LWIP_RAW */
AdamGreen 0:3b00827bb0b7 1386 #if LWIP_UDP
AdamGreen 0:3b00827bb0b7 1387 case NETCONN_UDP:
AdamGreen 0:3b00827bb0b7 1388 if (msg->msg.ad.local) {
AdamGreen 0:3b00827bb0b7 1389 *(msg->msg.ad.port) = msg->conn->pcb.udp->local_port;
AdamGreen 0:3b00827bb0b7 1390 } else {
AdamGreen 0:3b00827bb0b7 1391 if ((msg->conn->pcb.udp->flags & UDP_FLAGS_CONNECTED) == 0) {
AdamGreen 0:3b00827bb0b7 1392 msg->err = ERR_CONN;
AdamGreen 0:3b00827bb0b7 1393 } else {
AdamGreen 0:3b00827bb0b7 1394 *(msg->msg.ad.port) = msg->conn->pcb.udp->remote_port;
AdamGreen 0:3b00827bb0b7 1395 }
AdamGreen 0:3b00827bb0b7 1396 }
AdamGreen 0:3b00827bb0b7 1397 break;
AdamGreen 0:3b00827bb0b7 1398 #endif /* LWIP_UDP */
AdamGreen 0:3b00827bb0b7 1399 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 1400 case NETCONN_TCP:
AdamGreen 0:3b00827bb0b7 1401 *(msg->msg.ad.port) = (msg->msg.ad.local?msg->conn->pcb.tcp->local_port:msg->conn->pcb.tcp->remote_port);
AdamGreen 0:3b00827bb0b7 1402 break;
AdamGreen 0:3b00827bb0b7 1403 #endif /* LWIP_TCP */
AdamGreen 0:3b00827bb0b7 1404 default:
AdamGreen 0:3b00827bb0b7 1405 LWIP_ASSERT("invalid netconn_type", 0);
AdamGreen 0:3b00827bb0b7 1406 break;
AdamGreen 0:3b00827bb0b7 1407 }
AdamGreen 0:3b00827bb0b7 1408 } else {
AdamGreen 0:3b00827bb0b7 1409 msg->err = ERR_CONN;
AdamGreen 0:3b00827bb0b7 1410 }
AdamGreen 0:3b00827bb0b7 1411 TCPIP_APIMSG_ACK(msg);
AdamGreen 0:3b00827bb0b7 1412 }
AdamGreen 0:3b00827bb0b7 1413
AdamGreen 0:3b00827bb0b7 1414 /**
AdamGreen 0:3b00827bb0b7 1415 * Close a TCP pcb contained in a netconn
AdamGreen 0:3b00827bb0b7 1416 * Called from netconn_close
AdamGreen 0:3b00827bb0b7 1417 *
AdamGreen 0:3b00827bb0b7 1418 * @param msg the api_msg_msg pointing to the connection
AdamGreen 0:3b00827bb0b7 1419 */
AdamGreen 0:3b00827bb0b7 1420 void
AdamGreen 0:3b00827bb0b7 1421 do_close(struct api_msg_msg *msg)
AdamGreen 0:3b00827bb0b7 1422 {
AdamGreen 0:3b00827bb0b7 1423 #if LWIP_TCP
AdamGreen 0:3b00827bb0b7 1424 /* @todo: abort running write/connect? */
AdamGreen 0:3b00827bb0b7 1425 if ((msg->conn->state != NETCONN_NONE) && (msg->conn->state != NETCONN_LISTEN)) {
AdamGreen 0:3b00827bb0b7 1426 /* this only happens for TCP netconns */
AdamGreen 0:3b00827bb0b7 1427 LWIP_ASSERT("msg->conn->type == NETCONN_TCP", msg->conn->type == NETCONN_TCP);
AdamGreen 0:3b00827bb0b7 1428 msg->err = ERR_INPROGRESS;
AdamGreen 0:3b00827bb0b7 1429 } else if ((msg->conn->pcb.tcp != NULL) && (msg->conn->type == NETCONN_TCP)) {
AdamGreen 0:3b00827bb0b7 1430 if ((msg->msg.sd.shut != NETCONN_SHUT_RDWR) && (msg->conn->state == NETCONN_LISTEN)) {
AdamGreen 0:3b00827bb0b7 1431 /* LISTEN doesn't support half shutdown */
AdamGreen 0:3b00827bb0b7 1432 msg->err = ERR_CONN;
AdamGreen 0:3b00827bb0b7 1433 } else {
AdamGreen 0:3b00827bb0b7 1434 if (msg->msg.sd.shut & NETCONN_SHUT_RD) {
AdamGreen 0:3b00827bb0b7 1435 /* Drain and delete mboxes */
AdamGreen 0:3b00827bb0b7 1436 netconn_drain(msg->conn);
AdamGreen 0:3b00827bb0b7 1437 }
AdamGreen 0:3b00827bb0b7 1438 LWIP_ASSERT("already writing or closing", msg->conn->current_msg == NULL &&
AdamGreen 0:3b00827bb0b7 1439 msg->conn->write_offset == 0);
AdamGreen 0:3b00827bb0b7 1440 msg->conn->state = NETCONN_CLOSE;
AdamGreen 0:3b00827bb0b7 1441 msg->conn->current_msg = msg;
AdamGreen 0:3b00827bb0b7 1442 do_close_internal(msg->conn);
AdamGreen 0:3b00827bb0b7 1443 /* for tcp netconns, do_close_internal ACKs the message */
AdamGreen 0:3b00827bb0b7 1444 return;
AdamGreen 0:3b00827bb0b7 1445 }
AdamGreen 0:3b00827bb0b7 1446 } else
AdamGreen 0:3b00827bb0b7 1447 #endif /* LWIP_TCP */
AdamGreen 0:3b00827bb0b7 1448 {
AdamGreen 0:3b00827bb0b7 1449 msg->err = ERR_VAL;
AdamGreen 0:3b00827bb0b7 1450 }
AdamGreen 0:3b00827bb0b7 1451 sys_sem_signal(&msg->conn->op_completed);
AdamGreen 0:3b00827bb0b7 1452 }
AdamGreen 0:3b00827bb0b7 1453
AdamGreen 0:3b00827bb0b7 1454 #if LWIP_IGMP
AdamGreen 0:3b00827bb0b7 1455 /**
AdamGreen 0:3b00827bb0b7 1456 * Join multicast groups for UDP netconns.
AdamGreen 0:3b00827bb0b7 1457 * Called from netconn_join_leave_group
AdamGreen 0:3b00827bb0b7 1458 *
AdamGreen 0:3b00827bb0b7 1459 * @param msg the api_msg_msg pointing to the connection
AdamGreen 0:3b00827bb0b7 1460 */
AdamGreen 0:3b00827bb0b7 1461 void
AdamGreen 0:3b00827bb0b7 1462 do_join_leave_group(struct api_msg_msg *msg)
AdamGreen 0:3b00827bb0b7 1463 {
AdamGreen 0:3b00827bb0b7 1464 if (ERR_IS_FATAL(msg->conn->last_err)) {
AdamGreen 0:3b00827bb0b7 1465 msg->err = msg->conn->last_err;
AdamGreen 0:3b00827bb0b7 1466 } else {
AdamGreen 0:3b00827bb0b7 1467 if (msg->conn->pcb.tcp != NULL) {
AdamGreen 0:3b00827bb0b7 1468 if (NETCONNTYPE_GROUP(msg->conn->type) == NETCONN_UDP) {
AdamGreen 0:3b00827bb0b7 1469 #if LWIP_UDP
AdamGreen 0:3b00827bb0b7 1470 if (msg->msg.jl.join_or_leave == NETCONN_JOIN) {
AdamGreen 0:3b00827bb0b7 1471 msg->err = igmp_joingroup(msg->msg.jl.netif_addr, msg->msg.jl.multiaddr);
AdamGreen 0:3b00827bb0b7 1472 } else {
AdamGreen 0:3b00827bb0b7 1473 msg->err = igmp_leavegroup(msg->msg.jl.netif_addr, msg->msg.jl.multiaddr);
AdamGreen 0:3b00827bb0b7 1474 }
AdamGreen 0:3b00827bb0b7 1475 #endif /* LWIP_UDP */
AdamGreen 0:3b00827bb0b7 1476 #if (LWIP_TCP || LWIP_RAW)
AdamGreen 0:3b00827bb0b7 1477 } else {
AdamGreen 0:3b00827bb0b7 1478 msg->err = ERR_VAL;
AdamGreen 0:3b00827bb0b7 1479 #endif /* (LWIP_TCP || LWIP_RAW) */
AdamGreen 0:3b00827bb0b7 1480 }
AdamGreen 0:3b00827bb0b7 1481 } else {
AdamGreen 0:3b00827bb0b7 1482 msg->err = ERR_CONN;
AdamGreen 0:3b00827bb0b7 1483 }
AdamGreen 0:3b00827bb0b7 1484 }
AdamGreen 0:3b00827bb0b7 1485 TCPIP_APIMSG_ACK(msg);
AdamGreen 0:3b00827bb0b7 1486 }
AdamGreen 0:3b00827bb0b7 1487 #endif /* LWIP_IGMP */
AdamGreen 0:3b00827bb0b7 1488
AdamGreen 0:3b00827bb0b7 1489 #if LWIP_DNS
AdamGreen 0:3b00827bb0b7 1490 /**
AdamGreen 0:3b00827bb0b7 1491 * Callback function that is called when DNS name is resolved
AdamGreen 0:3b00827bb0b7 1492 * (or on timeout). A waiting application thread is waked up by
AdamGreen 0:3b00827bb0b7 1493 * signaling the semaphore.
AdamGreen 0:3b00827bb0b7 1494 */
AdamGreen 0:3b00827bb0b7 1495 static void
AdamGreen 0:3b00827bb0b7 1496 do_dns_found(const char *name, ip_addr_t *ipaddr, void *arg)
AdamGreen 0:3b00827bb0b7 1497 {
AdamGreen 0:3b00827bb0b7 1498 struct dns_api_msg *msg = (struct dns_api_msg*)arg;
AdamGreen 0:3b00827bb0b7 1499
AdamGreen 0:3b00827bb0b7 1500 LWIP_ASSERT("DNS response for wrong host name", strcmp(msg->name, name) == 0);
AdamGreen 0:3b00827bb0b7 1501 LWIP_UNUSED_ARG(name);
AdamGreen 0:3b00827bb0b7 1502
AdamGreen 0:3b00827bb0b7 1503 if (ipaddr == NULL) {
AdamGreen 0:3b00827bb0b7 1504 /* timeout or memory error */
AdamGreen 0:3b00827bb0b7 1505 *msg->err = ERR_VAL;
AdamGreen 0:3b00827bb0b7 1506 } else {
AdamGreen 0:3b00827bb0b7 1507 /* address was resolved */
AdamGreen 0:3b00827bb0b7 1508 *msg->err = ERR_OK;
AdamGreen 0:3b00827bb0b7 1509 *msg->addr = *ipaddr;
AdamGreen 0:3b00827bb0b7 1510 }
AdamGreen 0:3b00827bb0b7 1511 /* wake up the application task waiting in netconn_gethostbyname */
AdamGreen 0:3b00827bb0b7 1512 sys_sem_signal(msg->sem);
AdamGreen 0:3b00827bb0b7 1513 }
AdamGreen 0:3b00827bb0b7 1514
AdamGreen 0:3b00827bb0b7 1515 /**
AdamGreen 0:3b00827bb0b7 1516 * Execute a DNS query
AdamGreen 0:3b00827bb0b7 1517 * Called from netconn_gethostbyname
AdamGreen 0:3b00827bb0b7 1518 *
AdamGreen 0:3b00827bb0b7 1519 * @param arg the dns_api_msg pointing to the query
AdamGreen 0:3b00827bb0b7 1520 */
AdamGreen 0:3b00827bb0b7 1521 void
AdamGreen 0:3b00827bb0b7 1522 do_gethostbyname(void *arg)
AdamGreen 0:3b00827bb0b7 1523 {
AdamGreen 0:3b00827bb0b7 1524 struct dns_api_msg *msg = (struct dns_api_msg*)arg;
AdamGreen 0:3b00827bb0b7 1525
AdamGreen 0:3b00827bb0b7 1526 *msg->err = dns_gethostbyname(msg->name, msg->addr, do_dns_found, msg);
AdamGreen 0:3b00827bb0b7 1527 if (*msg->err != ERR_INPROGRESS) {
AdamGreen 0:3b00827bb0b7 1528 /* on error or immediate success, wake up the application
AdamGreen 0:3b00827bb0b7 1529 * task waiting in netconn_gethostbyname */
AdamGreen 0:3b00827bb0b7 1530 sys_sem_signal(msg->sem);
AdamGreen 0:3b00827bb0b7 1531 }
AdamGreen 0:3b00827bb0b7 1532 }
AdamGreen 0:3b00827bb0b7 1533 #endif /* LWIP_DNS */
AdamGreen 0:3b00827bb0b7 1534
AdamGreen 0:3b00827bb0b7 1535 #endif /* LWIP_NETCONN */