F7_Ethernet - Ethernet for Nucleo and Disco board STM32F746 wor…

Users » DieterGraef » Code » F7_Ethernet

Ethernet for Nucleo and Disco board STM32F746 works with gcc and arm. IAC is untested

Dependents: STM32F746_iothub_client_sample_mqtt DISCO-F746NG_Ethernet Nucleo_F746ZG_Ethernet thethingsiO-DISCO_F746NG-mqtt ... more

lwip/api/api_msg.c@1:28ba13dd96f7, 2016-06-23 (annotated)

Committer:: DieterGraef
Date:: Thu Jun 23 09:04:23 2016 +0000
Revision:: 1:28ba13dd96f7
Parent:: 0:d26c1b55cfca

corrected MAC issue. The MAC is now 02:00:00:xx:xx:xx where xx is the sum over the unique device register

Who changed what in which revision?

User	Revision	Line number	New contents of line
DieterGraef	0:d26c1b55cfca	1	/**
DieterGraef	0:d26c1b55cfca	2	* @file
DieterGraef	0:d26c1b55cfca	3	* Sequential API Internal module
DieterGraef	0:d26c1b55cfca	4	*
DieterGraef	0:d26c1b55cfca	5	*/
DieterGraef	0:d26c1b55cfca	6
DieterGraef	0:d26c1b55cfca	7	/*
DieterGraef	0:d26c1b55cfca	8	* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
DieterGraef	0:d26c1b55cfca	9	* All rights reserved.
DieterGraef	0:d26c1b55cfca	10	*
DieterGraef	0:d26c1b55cfca	11	* Redistribution and use in source and binary forms, with or without modification,
DieterGraef	0:d26c1b55cfca	12	* are permitted provided that the following conditions are met:
DieterGraef	0:d26c1b55cfca	13	*
DieterGraef	0:d26c1b55cfca	14	* 1. Redistributions of source code must retain the above copyright notice,
DieterGraef	0:d26c1b55cfca	15	* this list of conditions and the following disclaimer.
DieterGraef	0:d26c1b55cfca	16	* 2. Redistributions in binary form must reproduce the above copyright notice,
DieterGraef	0:d26c1b55cfca	17	* this list of conditions and the following disclaimer in the documentation
DieterGraef	0:d26c1b55cfca	18	* and/or other materials provided with the distribution.
DieterGraef	0:d26c1b55cfca	19	* 3. The name of the author may not be used to endorse or promote products
DieterGraef	0:d26c1b55cfca	20	* derived from this software without specific prior written permission.
DieterGraef	0:d26c1b55cfca	21	*
DieterGraef	0:d26c1b55cfca	22	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
DieterGraef	0:d26c1b55cfca	23	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
DieterGraef	0:d26c1b55cfca	24	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
DieterGraef	0:d26c1b55cfca	25	* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
DieterGraef	0:d26c1b55cfca	26	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
DieterGraef	0:d26c1b55cfca	27	* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
DieterGraef	0:d26c1b55cfca	28	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
DieterGraef	0:d26c1b55cfca	29	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
DieterGraef	0:d26c1b55cfca	30	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
DieterGraef	0:d26c1b55cfca	31	* OF SUCH DAMAGE.
DieterGraef	0:d26c1b55cfca	32	*
DieterGraef	0:d26c1b55cfca	33	* This file is part of the lwIP TCP/IP stack.
DieterGraef	0:d26c1b55cfca	34	*
DieterGraef	0:d26c1b55cfca	35	* Author: Adam Dunkels <adam@sics.se>
DieterGraef	0:d26c1b55cfca	36	*
DieterGraef	0:d26c1b55cfca	37	*/
DieterGraef	0:d26c1b55cfca	38
DieterGraef	0:d26c1b55cfca	39	#include "lwip/opt.h"
DieterGraef	0:d26c1b55cfca	40
DieterGraef	0:d26c1b55cfca	41	#if LWIP_NETCONN /* don't build if not configured for use in lwipopts.h */
DieterGraef	0:d26c1b55cfca	42
DieterGraef	0:d26c1b55cfca	43	#include "lwip/api_msg.h"
DieterGraef	0:d26c1b55cfca	44
DieterGraef	0:d26c1b55cfca	45	#include "lwip/ip.h"
DieterGraef	0:d26c1b55cfca	46	#include "lwip/udp.h"
DieterGraef	0:d26c1b55cfca	47	#include "lwip/tcp.h"
DieterGraef	0:d26c1b55cfca	48	#include "lwip/raw.h"
DieterGraef	0:d26c1b55cfca	49
DieterGraef	0:d26c1b55cfca	50	#include "lwip/memp.h"
DieterGraef	0:d26c1b55cfca	51	#include "lwip/tcpip.h"
DieterGraef	0:d26c1b55cfca	52	#include "lwip/igmp.h"
DieterGraef	0:d26c1b55cfca	53	#include "lwip/dns.h"
DieterGraef	0:d26c1b55cfca	54
DieterGraef	0:d26c1b55cfca	55	#include <string.h>
DieterGraef	0:d26c1b55cfca	56
DieterGraef	0:d26c1b55cfca	57	#define SET_NONBLOCKING_CONNECT(conn, val) do { if(val) { \
DieterGraef	0:d26c1b55cfca	58	(conn)->flags \|= NETCONN_FLAG_IN_NONBLOCKING_CONNECT; \
DieterGraef	0:d26c1b55cfca	59	} else { \
DieterGraef	0:d26c1b55cfca	60	(conn)->flags &= ~ NETCONN_FLAG_IN_NONBLOCKING_CONNECT; }} while(0)
DieterGraef	0:d26c1b55cfca	61	#define IN_NONBLOCKING_CONNECT(conn) (((conn)->flags & NETCONN_FLAG_IN_NONBLOCKING_CONNECT) != 0)
DieterGraef	0:d26c1b55cfca	62
DieterGraef	0:d26c1b55cfca	63	/* forward declarations */
DieterGraef	0:d26c1b55cfca	64	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	65	static err_t do_writemore(struct netconn *conn);
DieterGraef	0:d26c1b55cfca	66	static void do_close_internal(struct netconn *conn);
DieterGraef	0:d26c1b55cfca	67	#endif
DieterGraef	0:d26c1b55cfca	68
DieterGraef	0:d26c1b55cfca	69	#if LWIP_RAW
DieterGraef	0:d26c1b55cfca	70	/**
DieterGraef	0:d26c1b55cfca	71	* Receive callback function for RAW netconns.
DieterGraef	0:d26c1b55cfca	72	* Doesn't 'eat' the packet, only references it and sends it to
DieterGraef	0:d26c1b55cfca	73	* conn->recvmbox
DieterGraef	0:d26c1b55cfca	74	*
DieterGraef	0:d26c1b55cfca	75	* @see raw.h (struct raw_pcb.recv) for parameters and return value
DieterGraef	0:d26c1b55cfca	76	*/
DieterGraef	0:d26c1b55cfca	77	static u8_t
DieterGraef	0:d26c1b55cfca	78	recv_raw(void arg, struct raw_pcb pcb, struct pbuf *p,
DieterGraef	0:d26c1b55cfca	79	ip_addr_t *addr)
DieterGraef	0:d26c1b55cfca	80	{
DieterGraef	0:d26c1b55cfca	81	struct pbuf *q;
DieterGraef	0:d26c1b55cfca	82	struct netbuf *buf;
DieterGraef	0:d26c1b55cfca	83	struct netconn *conn;
DieterGraef	0:d26c1b55cfca	84
DieterGraef	0:d26c1b55cfca	85	LWIP_UNUSED_ARG(addr);
DieterGraef	0:d26c1b55cfca	86	conn = (struct netconn *)arg;
DieterGraef	0:d26c1b55cfca	87
DieterGraef	0:d26c1b55cfca	88	if ((conn != NULL) && sys_mbox_valid(&conn->recvmbox)) {
DieterGraef	0:d26c1b55cfca	89	#if LWIP_SO_RCVBUF
DieterGraef	0:d26c1b55cfca	90	int recv_avail;
DieterGraef	0:d26c1b55cfca	91	SYS_ARCH_GET(conn->recv_avail, recv_avail);
DieterGraef	0:d26c1b55cfca	92	if ((recv_avail + (int)(p->tot_len)) > conn->recv_bufsize) {
DieterGraef	0:d26c1b55cfca	93	return 0;
DieterGraef	0:d26c1b55cfca	94	}
DieterGraef	0:d26c1b55cfca	95	#endif /* LWIP_SO_RCVBUF */
DieterGraef	0:d26c1b55cfca	96	/* copy the whole packet into new pbufs */
DieterGraef	0:d26c1b55cfca	97	q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
DieterGraef	0:d26c1b55cfca	98	if(q != NULL) {
DieterGraef	0:d26c1b55cfca	99	if (pbuf_copy(q, p) != ERR_OK) {
DieterGraef	0:d26c1b55cfca	100	pbuf_free(q);
DieterGraef	0:d26c1b55cfca	101	q = NULL;
DieterGraef	0:d26c1b55cfca	102	}
DieterGraef	0:d26c1b55cfca	103	}
DieterGraef	0:d26c1b55cfca	104
DieterGraef	0:d26c1b55cfca	105	if (q != NULL) {
DieterGraef	0:d26c1b55cfca	106	u16_t len;
DieterGraef	0:d26c1b55cfca	107	buf = (struct netbuf *)memp_malloc(MEMP_NETBUF);
DieterGraef	0:d26c1b55cfca	108	if (buf == NULL) {
DieterGraef	0:d26c1b55cfca	109	pbuf_free(q);
DieterGraef	0:d26c1b55cfca	110	return 0;
DieterGraef	0:d26c1b55cfca	111	}
DieterGraef	0:d26c1b55cfca	112
DieterGraef	0:d26c1b55cfca	113	buf->p = q;
DieterGraef	0:d26c1b55cfca	114	buf->ptr = q;
DieterGraef	0:d26c1b55cfca	115	ip_addr_copy(buf->addr, *ip_current_src_addr());
DieterGraef	0:d26c1b55cfca	116	buf->port = pcb->protocol;
DieterGraef	0:d26c1b55cfca	117
DieterGraef	0:d26c1b55cfca	118	len = q->tot_len;
DieterGraef	0:d26c1b55cfca	119	if (sys_mbox_trypost(&conn->recvmbox, buf) != ERR_OK) {
DieterGraef	0:d26c1b55cfca	120	netbuf_delete(buf);
DieterGraef	0:d26c1b55cfca	121	return 0;
DieterGraef	0:d26c1b55cfca	122	} else {
DieterGraef	0:d26c1b55cfca	123	#if LWIP_SO_RCVBUF
DieterGraef	0:d26c1b55cfca	124	SYS_ARCH_INC(conn->recv_avail, len);
DieterGraef	0:d26c1b55cfca	125	#endif /* LWIP_SO_RCVBUF */
DieterGraef	0:d26c1b55cfca	126	/* Register event with callback */
DieterGraef	0:d26c1b55cfca	127	API_EVENT(conn, NETCONN_EVT_RCVPLUS, len);
DieterGraef	0:d26c1b55cfca	128	}
DieterGraef	0:d26c1b55cfca	129	}
DieterGraef	0:d26c1b55cfca	130	}
DieterGraef	0:d26c1b55cfca	131
DieterGraef	0:d26c1b55cfca	132	return 0; /* do not eat the packet */
DieterGraef	0:d26c1b55cfca	133	}
DieterGraef	0:d26c1b55cfca	134	#endif /* LWIP_RAW*/
DieterGraef	0:d26c1b55cfca	135
DieterGraef	0:d26c1b55cfca	136	#if LWIP_UDP
DieterGraef	0:d26c1b55cfca	137	/**
DieterGraef	0:d26c1b55cfca	138	* Receive callback function for UDP netconns.
DieterGraef	0:d26c1b55cfca	139	* Posts the packet to conn->recvmbox or deletes it on memory error.
DieterGraef	0:d26c1b55cfca	140	*
DieterGraef	0:d26c1b55cfca	141	* @see udp.h (struct udp_pcb.recv) for parameters
DieterGraef	0:d26c1b55cfca	142	*/
DieterGraef	0:d26c1b55cfca	143	static void
DieterGraef	0:d26c1b55cfca	144	recv_udp(void arg, struct udp_pcb pcb, struct pbuf *p,
DieterGraef	0:d26c1b55cfca	145	ip_addr_t *addr, u16_t port)
DieterGraef	0:d26c1b55cfca	146	{
DieterGraef	0:d26c1b55cfca	147	struct netbuf *buf;
DieterGraef	0:d26c1b55cfca	148	struct netconn *conn;
DieterGraef	0:d26c1b55cfca	149	u16_t len;
DieterGraef	0:d26c1b55cfca	150	#if LWIP_SO_RCVBUF
DieterGraef	0:d26c1b55cfca	151	int recv_avail;
DieterGraef	0:d26c1b55cfca	152	#endif /* LWIP_SO_RCVBUF */
DieterGraef	0:d26c1b55cfca	153
DieterGraef	0:d26c1b55cfca	154	LWIP_UNUSED_ARG(pcb); /* only used for asserts... */
DieterGraef	0:d26c1b55cfca	155	LWIP_ASSERT("recv_udp must have a pcb argument", pcb != NULL);
DieterGraef	0:d26c1b55cfca	156	LWIP_ASSERT("recv_udp must have an argument", arg != NULL);
DieterGraef	0:d26c1b55cfca	157	conn = (struct netconn *)arg;
DieterGraef	0:d26c1b55cfca	158	LWIP_ASSERT("recv_udp: recv for wrong pcb!", conn->pcb.udp == pcb);
DieterGraef	0:d26c1b55cfca	159
DieterGraef	0:d26c1b55cfca	160	#if LWIP_SO_RCVBUF
DieterGraef	0:d26c1b55cfca	161	SYS_ARCH_GET(conn->recv_avail, recv_avail);
DieterGraef	0:d26c1b55cfca	162	if ((conn == NULL) \|\| !sys_mbox_valid(&conn->recvmbox) \|\|
DieterGraef	0:d26c1b55cfca	163	((recv_avail + (int)(p->tot_len)) > conn->recv_bufsize)) {
DieterGraef	0:d26c1b55cfca	164	#else /* LWIP_SO_RCVBUF */
DieterGraef	0:d26c1b55cfca	165	if ((conn == NULL) \|\| !sys_mbox_valid(&conn->recvmbox)) {
DieterGraef	0:d26c1b55cfca	166	#endif /* LWIP_SO_RCVBUF */
DieterGraef	0:d26c1b55cfca	167	pbuf_free(p);
DieterGraef	0:d26c1b55cfca	168	return;
DieterGraef	0:d26c1b55cfca	169	}
DieterGraef	0:d26c1b55cfca	170
DieterGraef	0:d26c1b55cfca	171	buf = (struct netbuf *)memp_malloc(MEMP_NETBUF);
DieterGraef	0:d26c1b55cfca	172	if (buf == NULL) {
DieterGraef	0:d26c1b55cfca	173	pbuf_free(p);
DieterGraef	0:d26c1b55cfca	174	return;
DieterGraef	0:d26c1b55cfca	175	} else {
DieterGraef	0:d26c1b55cfca	176	buf->p = p;
DieterGraef	0:d26c1b55cfca	177	buf->ptr = p;
DieterGraef	0:d26c1b55cfca	178	ip_addr_set(&buf->addr, addr);
DieterGraef	0:d26c1b55cfca	179	buf->port = port;
DieterGraef	0:d26c1b55cfca	180	#if LWIP_NETBUF_RECVINFO
DieterGraef	0:d26c1b55cfca	181	{
DieterGraef	0:d26c1b55cfca	182	const struct ip_hdr* iphdr = ip_current_header();
DieterGraef	0:d26c1b55cfca	183	/* get the UDP header - always in the first pbuf, ensured by udp_input */
DieterGraef	0:d26c1b55cfca	184	const struct udp_hdr* udphdr = (void)(((char)iphdr) + IPH_LEN(iphdr));
DieterGraef	0:d26c1b55cfca	185	#if LWIP_CHECKSUM_ON_COPY
DieterGraef	0:d26c1b55cfca	186	buf->flags = NETBUF_FLAG_DESTADDR;
DieterGraef	0:d26c1b55cfca	187	#endif /* LWIP_CHECKSUM_ON_COPY */
DieterGraef	0:d26c1b55cfca	188	ip_addr_set(&buf->toaddr, ip_current_dest_addr());
DieterGraef	0:d26c1b55cfca	189	buf->toport_chksum = udphdr->dest;
DieterGraef	0:d26c1b55cfca	190	}
DieterGraef	0:d26c1b55cfca	191	#endif /* LWIP_NETBUF_RECVINFO */
DieterGraef	0:d26c1b55cfca	192	}
DieterGraef	0:d26c1b55cfca	193
DieterGraef	0:d26c1b55cfca	194	len = p->tot_len;
DieterGraef	0:d26c1b55cfca	195	if (sys_mbox_trypost(&conn->recvmbox, buf) != ERR_OK) {
DieterGraef	0:d26c1b55cfca	196	netbuf_delete(buf);
DieterGraef	0:d26c1b55cfca	197	return;
DieterGraef	0:d26c1b55cfca	198	} else {
DieterGraef	0:d26c1b55cfca	199	#if LWIP_SO_RCVBUF
DieterGraef	0:d26c1b55cfca	200	SYS_ARCH_INC(conn->recv_avail, len);
DieterGraef	0:d26c1b55cfca	201	#endif /* LWIP_SO_RCVBUF */
DieterGraef	0:d26c1b55cfca	202	/* Register event with callback */
DieterGraef	0:d26c1b55cfca	203	API_EVENT(conn, NETCONN_EVT_RCVPLUS, len);
DieterGraef	0:d26c1b55cfca	204	}
DieterGraef	0:d26c1b55cfca	205	}
DieterGraef	0:d26c1b55cfca	206	#endif /* LWIP_UDP */
DieterGraef	0:d26c1b55cfca	207
DieterGraef	0:d26c1b55cfca	208	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	209	/**
DieterGraef	0:d26c1b55cfca	210	* Receive callback function for TCP netconns.
DieterGraef	0:d26c1b55cfca	211	* Posts the packet to conn->recvmbox, but doesn't delete it on errors.
DieterGraef	0:d26c1b55cfca	212	*
DieterGraef	0:d26c1b55cfca	213	* @see tcp.h (struct tcp_pcb.recv) for parameters and return value
DieterGraef	0:d26c1b55cfca	214	*/
DieterGraef	0:d26c1b55cfca	215	static err_t
DieterGraef	0:d26c1b55cfca	216	recv_tcp(void arg, struct tcp_pcb pcb, struct pbuf *p, err_t err)
DieterGraef	0:d26c1b55cfca	217	{
DieterGraef	0:d26c1b55cfca	218	struct netconn *conn;
DieterGraef	0:d26c1b55cfca	219	u16_t len;
DieterGraef	0:d26c1b55cfca	220
DieterGraef	0:d26c1b55cfca	221	LWIP_UNUSED_ARG(pcb);
DieterGraef	0:d26c1b55cfca	222	LWIP_ASSERT("recv_tcp must have a pcb argument", pcb != NULL);
DieterGraef	0:d26c1b55cfca	223	LWIP_ASSERT("recv_tcp must have an argument", arg != NULL);
DieterGraef	0:d26c1b55cfca	224	conn = (struct netconn *)arg;
DieterGraef	0:d26c1b55cfca	225	LWIP_ASSERT("recv_tcp: recv for wrong pcb!", conn->pcb.tcp == pcb);
DieterGraef	0:d26c1b55cfca	226
DieterGraef	0:d26c1b55cfca	227	if (conn == NULL) {
DieterGraef	0:d26c1b55cfca	228	return ERR_VAL;
DieterGraef	0:d26c1b55cfca	229	}
DieterGraef	0:d26c1b55cfca	230	if (!sys_mbox_valid(&conn->recvmbox)) {
DieterGraef	0:d26c1b55cfca	231	/* recvmbox already deleted */
DieterGraef	0:d26c1b55cfca	232	if (p != NULL) {
DieterGraef	0:d26c1b55cfca	233	tcp_recved(pcb, p->tot_len);
DieterGraef	0:d26c1b55cfca	234	pbuf_free(p);
DieterGraef	0:d26c1b55cfca	235	}
DieterGraef	0:d26c1b55cfca	236	return ERR_OK;
DieterGraef	0:d26c1b55cfca	237	}
DieterGraef	0:d26c1b55cfca	238	/* Unlike for UDP or RAW pcbs, don't check for available space
DieterGraef	0:d26c1b55cfca	239	using recv_avail since that could break the connection
DieterGraef	0:d26c1b55cfca	240	(data is already ACKed) */
DieterGraef	0:d26c1b55cfca	241
DieterGraef	0:d26c1b55cfca	242	/* don't overwrite fatal errors! */
DieterGraef	0:d26c1b55cfca	243	NETCONN_SET_SAFE_ERR(conn, err);
DieterGraef	0:d26c1b55cfca	244
DieterGraef	0:d26c1b55cfca	245	if (p != NULL) {
DieterGraef	0:d26c1b55cfca	246	len = p->tot_len;
DieterGraef	0:d26c1b55cfca	247	} else {
DieterGraef	0:d26c1b55cfca	248	len = 0;
DieterGraef	0:d26c1b55cfca	249	}
DieterGraef	0:d26c1b55cfca	250
DieterGraef	0:d26c1b55cfca	251	if (sys_mbox_trypost(&conn->recvmbox, p) != ERR_OK) {
DieterGraef	0:d26c1b55cfca	252	/* don't deallocate p: it is presented to us later again from tcp_fasttmr! */
DieterGraef	0:d26c1b55cfca	253	return ERR_MEM;
DieterGraef	0:d26c1b55cfca	254	} else {
DieterGraef	0:d26c1b55cfca	255	#if LWIP_SO_RCVBUF
DieterGraef	0:d26c1b55cfca	256	SYS_ARCH_INC(conn->recv_avail, len);
DieterGraef	0:d26c1b55cfca	257	#endif /* LWIP_SO_RCVBUF */
DieterGraef	0:d26c1b55cfca	258	/* Register event with callback */
DieterGraef	0:d26c1b55cfca	259	API_EVENT(conn, NETCONN_EVT_RCVPLUS, len);
DieterGraef	0:d26c1b55cfca	260	}
DieterGraef	0:d26c1b55cfca	261
DieterGraef	0:d26c1b55cfca	262	return ERR_OK;
DieterGraef	0:d26c1b55cfca	263	}
DieterGraef	0:d26c1b55cfca	264
DieterGraef	0:d26c1b55cfca	265	/**
DieterGraef	0:d26c1b55cfca	266	* Poll callback function for TCP netconns.
DieterGraef	0:d26c1b55cfca	267	* Wakes up an application thread that waits for a connection to close
DieterGraef	0:d26c1b55cfca	268	* or data to be sent. The application thread then takes the
DieterGraef	0:d26c1b55cfca	269	* appropriate action to go on.
DieterGraef	0:d26c1b55cfca	270	*
DieterGraef	0:d26c1b55cfca	271	* Signals the conn->sem.
DieterGraef	0:d26c1b55cfca	272	* netconn_close waits for conn->sem if closing failed.
DieterGraef	0:d26c1b55cfca	273	*
DieterGraef	0:d26c1b55cfca	274	* @see tcp.h (struct tcp_pcb.poll) for parameters and return value
DieterGraef	0:d26c1b55cfca	275	*/
DieterGraef	0:d26c1b55cfca	276	static err_t
DieterGraef	0:d26c1b55cfca	277	poll_tcp(void arg, struct tcp_pcb pcb)
DieterGraef	0:d26c1b55cfca	278	{
DieterGraef	0:d26c1b55cfca	279	struct netconn conn = (struct netconn )arg;
DieterGraef	0:d26c1b55cfca	280
DieterGraef	0:d26c1b55cfca	281	LWIP_UNUSED_ARG(pcb);
DieterGraef	0:d26c1b55cfca	282	LWIP_ASSERT("conn != NULL", (conn != NULL));
DieterGraef	0:d26c1b55cfca	283
DieterGraef	0:d26c1b55cfca	284	if (conn->state == NETCONN_WRITE) {
DieterGraef	0:d26c1b55cfca	285	do_writemore(conn);
DieterGraef	0:d26c1b55cfca	286	} else if (conn->state == NETCONN_CLOSE) {
DieterGraef	0:d26c1b55cfca	287	do_close_internal(conn);
DieterGraef	0:d26c1b55cfca	288	}
DieterGraef	0:d26c1b55cfca	289	/* @todo: implement connect timeout here? */
DieterGraef	0:d26c1b55cfca	290
DieterGraef	0:d26c1b55cfca	291	/* Did a nonblocking write fail before? Then check available write-space. */
DieterGraef	0:d26c1b55cfca	292	if (conn->flags & NETCONN_FLAG_CHECK_WRITESPACE) {
DieterGraef	0:d26c1b55cfca	293	/* If the queued byte- or pbuf-count drops below the configured low-water limit,
DieterGraef	0:d26c1b55cfca	294	let select mark this pcb as writable again. */
DieterGraef	0:d26c1b55cfca	295	if ((conn->pcb.tcp != NULL) && (tcp_sndbuf(conn->pcb.tcp) > TCP_SNDLOWAT) &&
DieterGraef	0:d26c1b55cfca	296	(tcp_sndqueuelen(conn->pcb.tcp) < TCP_SNDQUEUELOWAT)) {
DieterGraef	0:d26c1b55cfca	297	conn->flags &= ~NETCONN_FLAG_CHECK_WRITESPACE;
DieterGraef	0:d26c1b55cfca	298	API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
DieterGraef	0:d26c1b55cfca	299	}
DieterGraef	0:d26c1b55cfca	300	}
DieterGraef	0:d26c1b55cfca	301
DieterGraef	0:d26c1b55cfca	302	return ERR_OK;
DieterGraef	0:d26c1b55cfca	303	}
DieterGraef	0:d26c1b55cfca	304
DieterGraef	0:d26c1b55cfca	305	/**
DieterGraef	0:d26c1b55cfca	306	* Sent callback function for TCP netconns.
DieterGraef	0:d26c1b55cfca	307	* Signals the conn->sem and calls API_EVENT.
DieterGraef	0:d26c1b55cfca	308	* netconn_write waits for conn->sem if send buffer is low.
DieterGraef	0:d26c1b55cfca	309	*
DieterGraef	0:d26c1b55cfca	310	* @see tcp.h (struct tcp_pcb.sent) for parameters and return value
DieterGraef	0:d26c1b55cfca	311	*/
DieterGraef	0:d26c1b55cfca	312	static err_t
DieterGraef	0:d26c1b55cfca	313	sent_tcp(void arg, struct tcp_pcb pcb, u16_t len)
DieterGraef	0:d26c1b55cfca	314	{
DieterGraef	0:d26c1b55cfca	315	struct netconn conn = (struct netconn )arg;
DieterGraef	0:d26c1b55cfca	316
DieterGraef	0:d26c1b55cfca	317	LWIP_UNUSED_ARG(pcb);
DieterGraef	0:d26c1b55cfca	318	LWIP_ASSERT("conn != NULL", (conn != NULL));
DieterGraef	0:d26c1b55cfca	319
DieterGraef	0:d26c1b55cfca	320	if (conn->state == NETCONN_WRITE) {
DieterGraef	0:d26c1b55cfca	321	do_writemore(conn);
DieterGraef	0:d26c1b55cfca	322	} else if (conn->state == NETCONN_CLOSE) {
DieterGraef	0:d26c1b55cfca	323	do_close_internal(conn);
DieterGraef	0:d26c1b55cfca	324	}
DieterGraef	0:d26c1b55cfca	325
DieterGraef	0:d26c1b55cfca	326	if (conn) {
DieterGraef	0:d26c1b55cfca	327	/* If the queued byte- or pbuf-count drops below the configured low-water limit,
DieterGraef	0:d26c1b55cfca	328	let select mark this pcb as writable again. */
DieterGraef	0:d26c1b55cfca	329	if ((conn->pcb.tcp != NULL) && (tcp_sndbuf(conn->pcb.tcp) > TCP_SNDLOWAT) &&
DieterGraef	0:d26c1b55cfca	330	(tcp_sndqueuelen(conn->pcb.tcp) < TCP_SNDQUEUELOWAT)) {
DieterGraef	0:d26c1b55cfca	331	conn->flags &= ~NETCONN_FLAG_CHECK_WRITESPACE;
DieterGraef	0:d26c1b55cfca	332	API_EVENT(conn, NETCONN_EVT_SENDPLUS, len);
DieterGraef	0:d26c1b55cfca	333	}
DieterGraef	0:d26c1b55cfca	334	}
DieterGraef	0:d26c1b55cfca	335
DieterGraef	0:d26c1b55cfca	336	return ERR_OK;
DieterGraef	0:d26c1b55cfca	337	}
DieterGraef	0:d26c1b55cfca	338
DieterGraef	0:d26c1b55cfca	339	/**
DieterGraef	0:d26c1b55cfca	340	* Error callback function for TCP netconns.
DieterGraef	0:d26c1b55cfca	341	* Signals conn->sem, posts to all conn mboxes and calls API_EVENT.
DieterGraef	0:d26c1b55cfca	342	* The application thread has then to decide what to do.
DieterGraef	0:d26c1b55cfca	343	*
DieterGraef	0:d26c1b55cfca	344	* @see tcp.h (struct tcp_pcb.err) for parameters
DieterGraef	0:d26c1b55cfca	345	*/
DieterGraef	0:d26c1b55cfca	346	static void
DieterGraef	0:d26c1b55cfca	347	err_tcp(void *arg, err_t err)
DieterGraef	0:d26c1b55cfca	348	{
DieterGraef	0:d26c1b55cfca	349	struct netconn *conn;
DieterGraef	0:d26c1b55cfca	350	enum netconn_state old_state;
DieterGraef	0:d26c1b55cfca	351	SYS_ARCH_DECL_PROTECT(lev);
DieterGraef	0:d26c1b55cfca	352
DieterGraef	0:d26c1b55cfca	353	conn = (struct netconn *)arg;
DieterGraef	0:d26c1b55cfca	354	LWIP_ASSERT("conn != NULL", (conn != NULL));
DieterGraef	0:d26c1b55cfca	355
DieterGraef	0:d26c1b55cfca	356	conn->pcb.tcp = NULL;
DieterGraef	0:d26c1b55cfca	357
DieterGraef	0:d26c1b55cfca	358	/* no check since this is always fatal! */
DieterGraef	0:d26c1b55cfca	359	SYS_ARCH_PROTECT(lev);
DieterGraef	0:d26c1b55cfca	360	conn->last_err = err;
DieterGraef	0:d26c1b55cfca	361	SYS_ARCH_UNPROTECT(lev);
DieterGraef	0:d26c1b55cfca	362
DieterGraef	0:d26c1b55cfca	363	/* reset conn->state now before waking up other threads */
DieterGraef	0:d26c1b55cfca	364	old_state = conn->state;
DieterGraef	0:d26c1b55cfca	365	conn->state = NETCONN_NONE;
DieterGraef	0:d26c1b55cfca	366
DieterGraef	0:d26c1b55cfca	367	/* Notify the user layer about a connection error. Used to signal
DieterGraef	0:d26c1b55cfca	368	select. */
DieterGraef	0:d26c1b55cfca	369	API_EVENT(conn, NETCONN_EVT_ERROR, 0);
DieterGraef	0:d26c1b55cfca	370	/* Try to release selects pending on 'read' or 'write', too.
DieterGraef	0:d26c1b55cfca	371	They will get an error if they actually try to read or write. */
DieterGraef	0:d26c1b55cfca	372	API_EVENT(conn, NETCONN_EVT_RCVPLUS, 0);
DieterGraef	0:d26c1b55cfca	373	API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
DieterGraef	0:d26c1b55cfca	374
DieterGraef	0:d26c1b55cfca	375	/* pass NULL-message to recvmbox to wake up pending recv */
DieterGraef	0:d26c1b55cfca	376	if (sys_mbox_valid(&conn->recvmbox)) {
DieterGraef	0:d26c1b55cfca	377	/* use trypost to prevent deadlock */
DieterGraef	0:d26c1b55cfca	378	sys_mbox_trypost(&conn->recvmbox, NULL);
DieterGraef	0:d26c1b55cfca	379	}
DieterGraef	0:d26c1b55cfca	380	/* pass NULL-message to acceptmbox to wake up pending accept */
DieterGraef	0:d26c1b55cfca	381	if (sys_mbox_valid(&conn->acceptmbox)) {
DieterGraef	0:d26c1b55cfca	382	/* use trypost to preven deadlock */
DieterGraef	0:d26c1b55cfca	383	sys_mbox_trypost(&conn->acceptmbox, NULL);
DieterGraef	0:d26c1b55cfca	384	}
DieterGraef	0:d26c1b55cfca	385
DieterGraef	0:d26c1b55cfca	386	if ((old_state == NETCONN_WRITE) \|\| (old_state == NETCONN_CLOSE) \|\|
DieterGraef	0:d26c1b55cfca	387	(old_state == NETCONN_CONNECT)) {
DieterGraef	0:d26c1b55cfca	388	/* calling do_writemore/do_close_internal is not necessary
DieterGraef	0:d26c1b55cfca	389	since the pcb has already been deleted! */
DieterGraef	0:d26c1b55cfca	390	int was_nonblocking_connect = IN_NONBLOCKING_CONNECT(conn);
DieterGraef	0:d26c1b55cfca	391	SET_NONBLOCKING_CONNECT(conn, 0);
DieterGraef	0:d26c1b55cfca	392
DieterGraef	0:d26c1b55cfca	393	if (!was_nonblocking_connect) {
DieterGraef	0:d26c1b55cfca	394	/* set error return code */
DieterGraef	0:d26c1b55cfca	395	LWIP_ASSERT("conn->current_msg != NULL", conn->current_msg != NULL);
DieterGraef	0:d26c1b55cfca	396	conn->current_msg->err = err;
DieterGraef	0:d26c1b55cfca	397	conn->current_msg = NULL;
DieterGraef	0:d26c1b55cfca	398	/* wake up the waiting task */
DieterGraef	0:d26c1b55cfca	399	sys_sem_signal(&conn->op_completed);
DieterGraef	0:d26c1b55cfca	400	}
DieterGraef	0:d26c1b55cfca	401	} else {
DieterGraef	0:d26c1b55cfca	402	LWIP_ASSERT("conn->current_msg == NULL", conn->current_msg == NULL);
DieterGraef	0:d26c1b55cfca	403	}
DieterGraef	0:d26c1b55cfca	404	}
DieterGraef	0:d26c1b55cfca	405
DieterGraef	0:d26c1b55cfca	406	/**
DieterGraef	0:d26c1b55cfca	407	* Setup a tcp_pcb with the correct callback function pointers
DieterGraef	0:d26c1b55cfca	408	* and their arguments.
DieterGraef	0:d26c1b55cfca	409	*
DieterGraef	0:d26c1b55cfca	410	* @param conn the TCP netconn to setup
DieterGraef	0:d26c1b55cfca	411	*/
DieterGraef	0:d26c1b55cfca	412	static void
DieterGraef	0:d26c1b55cfca	413	setup_tcp(struct netconn *conn)
DieterGraef	0:d26c1b55cfca	414	{
DieterGraef	0:d26c1b55cfca	415	struct tcp_pcb *pcb;
DieterGraef	0:d26c1b55cfca	416
DieterGraef	0:d26c1b55cfca	417	pcb = conn->pcb.tcp;
DieterGraef	0:d26c1b55cfca	418	tcp_arg(pcb, conn);
DieterGraef	0:d26c1b55cfca	419	tcp_recv(pcb, recv_tcp);
DieterGraef	0:d26c1b55cfca	420	tcp_sent(pcb, sent_tcp);
DieterGraef	0:d26c1b55cfca	421	tcp_poll(pcb, poll_tcp, 4);
DieterGraef	0:d26c1b55cfca	422	tcp_err(pcb, err_tcp);
DieterGraef	0:d26c1b55cfca	423	}
DieterGraef	0:d26c1b55cfca	424
DieterGraef	0:d26c1b55cfca	425	/**
DieterGraef	0:d26c1b55cfca	426	* Accept callback function for TCP netconns.
DieterGraef	0:d26c1b55cfca	427	* Allocates a new netconn and posts that to conn->acceptmbox.
DieterGraef	0:d26c1b55cfca	428	*
DieterGraef	0:d26c1b55cfca	429	* @see tcp.h (struct tcp_pcb_listen.accept) for parameters and return value
DieterGraef	0:d26c1b55cfca	430	*/
DieterGraef	0:d26c1b55cfca	431	static err_t
DieterGraef	0:d26c1b55cfca	432	accept_function(void arg, struct tcp_pcb newpcb, err_t err)
DieterGraef	0:d26c1b55cfca	433	{
DieterGraef	0:d26c1b55cfca	434	struct netconn *newconn;
DieterGraef	0:d26c1b55cfca	435	struct netconn conn = (struct netconn )arg;
DieterGraef	0:d26c1b55cfca	436
DieterGraef	0:d26c1b55cfca	437	LWIP_DEBUGF(API_MSG_DEBUG, ("accept_function: newpcb->tate: %s\n", tcp_debug_state_str(newpcb->state)));
DieterGraef	0:d26c1b55cfca	438
DieterGraef	0:d26c1b55cfca	439	if (!sys_mbox_valid(&conn->acceptmbox)) {
DieterGraef	0:d26c1b55cfca	440	LWIP_DEBUGF(API_MSG_DEBUG, ("accept_function: acceptmbox already deleted\n"));
DieterGraef	0:d26c1b55cfca	441	return ERR_VAL;
DieterGraef	0:d26c1b55cfca	442	}
DieterGraef	0:d26c1b55cfca	443
DieterGraef	0:d26c1b55cfca	444	/* We have to set the callback here even though
DieterGraef	0:d26c1b55cfca	445	* the new socket is unknown. conn->socket is marked as -1. */
DieterGraef	0:d26c1b55cfca	446	newconn = netconn_alloc(conn->type, conn->callback);
DieterGraef	0:d26c1b55cfca	447	if (newconn == NULL) {
DieterGraef	0:d26c1b55cfca	448	return ERR_MEM;
DieterGraef	0:d26c1b55cfca	449	}
DieterGraef	0:d26c1b55cfca	450	newconn->pcb.tcp = newpcb;
DieterGraef	0:d26c1b55cfca	451	setup_tcp(newconn);
DieterGraef	0:d26c1b55cfca	452	/* no protection: when creating the pcb, the netconn is not yet known
DieterGraef	0:d26c1b55cfca	453	to the application thread */
DieterGraef	0:d26c1b55cfca	454	newconn->last_err = err;
DieterGraef	0:d26c1b55cfca	455
DieterGraef	0:d26c1b55cfca	456	if (sys_mbox_trypost(&conn->acceptmbox, newconn) != ERR_OK) {
DieterGraef	0:d26c1b55cfca	457	/* When returning != ERR_OK, the pcb is aborted in tcp_process(),
DieterGraef	0:d26c1b55cfca	458	so do nothing here! */
DieterGraef	0:d26c1b55cfca	459	/* remove all references to this netconn from the pcb */
DieterGraef	0:d26c1b55cfca	460	struct tcp_pcb* pcb = newconn->pcb.tcp;
DieterGraef	0:d26c1b55cfca	461	tcp_arg(pcb, NULL);
DieterGraef	0:d26c1b55cfca	462	tcp_recv(pcb, NULL);
DieterGraef	0:d26c1b55cfca	463	tcp_sent(pcb, NULL);
DieterGraef	0:d26c1b55cfca	464	tcp_poll(pcb, NULL, 4);
DieterGraef	0:d26c1b55cfca	465	tcp_err(pcb, NULL);
DieterGraef	0:d26c1b55cfca	466	/* remove reference from to the pcb from this netconn */
DieterGraef	0:d26c1b55cfca	467	newconn->pcb.tcp = NULL;
DieterGraef	0:d26c1b55cfca	468	/* no need to drain since we know the recvmbox is empty. */
DieterGraef	0:d26c1b55cfca	469	sys_mbox_free(&newconn->recvmbox);
DieterGraef	0:d26c1b55cfca	470	sys_mbox_set_invalid(&newconn->recvmbox);
DieterGraef	0:d26c1b55cfca	471	netconn_free(newconn);
DieterGraef	0:d26c1b55cfca	472	return ERR_MEM;
DieterGraef	0:d26c1b55cfca	473	} else {
DieterGraef	0:d26c1b55cfca	474	/* Register event with callback */
DieterGraef	0:d26c1b55cfca	475	API_EVENT(conn, NETCONN_EVT_RCVPLUS, 0);
DieterGraef	0:d26c1b55cfca	476	}
DieterGraef	0:d26c1b55cfca	477
DieterGraef	0:d26c1b55cfca	478	return ERR_OK;
DieterGraef	0:d26c1b55cfca	479	}
DieterGraef	0:d26c1b55cfca	480	#endif /* LWIP_TCP */
DieterGraef	0:d26c1b55cfca	481
DieterGraef	0:d26c1b55cfca	482	/**
DieterGraef	0:d26c1b55cfca	483	* Create a new pcb of a specific type.
DieterGraef	0:d26c1b55cfca	484	* Called from do_newconn().
DieterGraef	0:d26c1b55cfca	485	*
DieterGraef	0:d26c1b55cfca	486	* @param msg the api_msg_msg describing the connection type
DieterGraef	0:d26c1b55cfca	487	* @return msg->conn->err, but the return value is currently ignored
DieterGraef	0:d26c1b55cfca	488	*/
DieterGraef	0:d26c1b55cfca	489	static void
DieterGraef	0:d26c1b55cfca	490	pcb_new(struct api_msg_msg *msg)
DieterGraef	0:d26c1b55cfca	491	{
DieterGraef	0:d26c1b55cfca	492	LWIP_ASSERT("pcb_new: pcb already allocated", msg->conn->pcb.tcp == NULL);
DieterGraef	0:d26c1b55cfca	493
DieterGraef	0:d26c1b55cfca	494	/* Allocate a PCB for this connection */
DieterGraef	0:d26c1b55cfca	495	switch(NETCONNTYPE_GROUP(msg->conn->type)) {
DieterGraef	0:d26c1b55cfca	496	#if LWIP_RAW
DieterGraef	0:d26c1b55cfca	497	case NETCONN_RAW:
DieterGraef	0:d26c1b55cfca	498	msg->conn->pcb.raw = raw_new(msg->msg.n.proto);
DieterGraef	0:d26c1b55cfca	499	if(msg->conn->pcb.raw == NULL) {
DieterGraef	0:d26c1b55cfca	500	msg->err = ERR_MEM;
DieterGraef	0:d26c1b55cfca	501	break;
DieterGraef	0:d26c1b55cfca	502	}
DieterGraef	0:d26c1b55cfca	503	raw_recv(msg->conn->pcb.raw, recv_raw, msg->conn);
DieterGraef	0:d26c1b55cfca	504	break;
DieterGraef	0:d26c1b55cfca	505	#endif /* LWIP_RAW */
DieterGraef	0:d26c1b55cfca	506	#if LWIP_UDP
DieterGraef	0:d26c1b55cfca	507	case NETCONN_UDP:
DieterGraef	0:d26c1b55cfca	508	msg->conn->pcb.udp = udp_new();
DieterGraef	0:d26c1b55cfca	509	if(msg->conn->pcb.udp == NULL) {
DieterGraef	0:d26c1b55cfca	510	msg->err = ERR_MEM;
DieterGraef	0:d26c1b55cfca	511	break;
DieterGraef	0:d26c1b55cfca	512	}
DieterGraef	0:d26c1b55cfca	513	#if LWIP_UDPLITE
DieterGraef	0:d26c1b55cfca	514	if (msg->conn->type==NETCONN_UDPLITE) {
DieterGraef	0:d26c1b55cfca	515	udp_setflags(msg->conn->pcb.udp, UDP_FLAGS_UDPLITE);
DieterGraef	0:d26c1b55cfca	516	}
DieterGraef	0:d26c1b55cfca	517	#endif /* LWIP_UDPLITE */
DieterGraef	0:d26c1b55cfca	518	if (msg->conn->type==NETCONN_UDPNOCHKSUM) {
DieterGraef	0:d26c1b55cfca	519	udp_setflags(msg->conn->pcb.udp, UDP_FLAGS_NOCHKSUM);
DieterGraef	0:d26c1b55cfca	520	}
DieterGraef	0:d26c1b55cfca	521	udp_recv(msg->conn->pcb.udp, recv_udp, msg->conn);
DieterGraef	0:d26c1b55cfca	522	break;
DieterGraef	0:d26c1b55cfca	523	#endif /* LWIP_UDP */
DieterGraef	0:d26c1b55cfca	524	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	525	case NETCONN_TCP:
DieterGraef	0:d26c1b55cfca	526	msg->conn->pcb.tcp = tcp_new();
DieterGraef	0:d26c1b55cfca	527	if(msg->conn->pcb.tcp == NULL) {
DieterGraef	0:d26c1b55cfca	528	msg->err = ERR_MEM;
DieterGraef	0:d26c1b55cfca	529	break;
DieterGraef	0:d26c1b55cfca	530	}
DieterGraef	0:d26c1b55cfca	531	setup_tcp(msg->conn);
DieterGraef	0:d26c1b55cfca	532	break;
DieterGraef	0:d26c1b55cfca	533	#endif /* LWIP_TCP */
DieterGraef	0:d26c1b55cfca	534	default:
DieterGraef	0:d26c1b55cfca	535	/* Unsupported netconn type, e.g. protocol disabled */
DieterGraef	0:d26c1b55cfca	536	msg->err = ERR_VAL;
DieterGraef	0:d26c1b55cfca	537	break;
DieterGraef	0:d26c1b55cfca	538	}
DieterGraef	0:d26c1b55cfca	539	}
DieterGraef	0:d26c1b55cfca	540
DieterGraef	0:d26c1b55cfca	541	/**
DieterGraef	0:d26c1b55cfca	542	* Create a new pcb of a specific type inside a netconn.
DieterGraef	0:d26c1b55cfca	543	* Called from netconn_new_with_proto_and_callback.
DieterGraef	0:d26c1b55cfca	544	*
DieterGraef	0:d26c1b55cfca	545	* @param msg the api_msg_msg describing the connection type
DieterGraef	0:d26c1b55cfca	546	*/
DieterGraef	0:d26c1b55cfca	547	void
DieterGraef	0:d26c1b55cfca	548	do_newconn(struct api_msg_msg *msg)
DieterGraef	0:d26c1b55cfca	549	{
DieterGraef	0:d26c1b55cfca	550	msg->err = ERR_OK;
DieterGraef	0:d26c1b55cfca	551	if(msg->conn->pcb.tcp == NULL) {
DieterGraef	0:d26c1b55cfca	552	pcb_new(msg);
DieterGraef	0:d26c1b55cfca	553	}
DieterGraef	0:d26c1b55cfca	554	/* Else? This "new" connection already has a PCB allocated. */
DieterGraef	0:d26c1b55cfca	555	/* Is this an error condition? Should it be deleted? */
DieterGraef	0:d26c1b55cfca	556	/* We currently just are happy and return. */
DieterGraef	0:d26c1b55cfca	557
DieterGraef	0:d26c1b55cfca	558	TCPIP_APIMSG_ACK(msg);
DieterGraef	0:d26c1b55cfca	559	}
DieterGraef	0:d26c1b55cfca	560
DieterGraef	0:d26c1b55cfca	561	/**
DieterGraef	0:d26c1b55cfca	562	* Create a new netconn (of a specific type) that has a callback function.
DieterGraef	0:d26c1b55cfca	563	* The corresponding pcb is NOT created!
DieterGraef	0:d26c1b55cfca	564	*
DieterGraef	0:d26c1b55cfca	565	* @param t the type of 'connection' to create (@see enum netconn_type)
DieterGraef	0:d26c1b55cfca	566	* @param proto the IP protocol for RAW IP pcbs
DieterGraef	0:d26c1b55cfca	567	* @param callback a function to call on status changes (RX available, TX'ed)
DieterGraef	0:d26c1b55cfca	568	* @return a newly allocated struct netconn or
DieterGraef	0:d26c1b55cfca	569	* NULL on memory error
DieterGraef	0:d26c1b55cfca	570	*/
DieterGraef	0:d26c1b55cfca	571	struct netconn*
DieterGraef	0:d26c1b55cfca	572	netconn_alloc(enum netconn_type t, netconn_callback callback)
DieterGraef	0:d26c1b55cfca	573	{
DieterGraef	0:d26c1b55cfca	574	struct netconn *conn;
DieterGraef	0:d26c1b55cfca	575	int size;
DieterGraef	0:d26c1b55cfca	576
DieterGraef	0:d26c1b55cfca	577	conn = (struct netconn *)memp_malloc(MEMP_NETCONN);
DieterGraef	0:d26c1b55cfca	578	if (conn == NULL) {
DieterGraef	0:d26c1b55cfca	579	return NULL;
DieterGraef	0:d26c1b55cfca	580	}
DieterGraef	0:d26c1b55cfca	581
DieterGraef	0:d26c1b55cfca	582	conn->last_err = ERR_OK;
DieterGraef	0:d26c1b55cfca	583	conn->type = t;
DieterGraef	0:d26c1b55cfca	584	conn->pcb.tcp = NULL;
DieterGraef	0:d26c1b55cfca	585
DieterGraef	0:d26c1b55cfca	586	#if (DEFAULT_RAW_RECVMBOX_SIZE == DEFAULT_UDP_RECVMBOX_SIZE) && \
DieterGraef	0:d26c1b55cfca	587	(DEFAULT_RAW_RECVMBOX_SIZE == DEFAULT_TCP_RECVMBOX_SIZE)
DieterGraef	0:d26c1b55cfca	588	size = DEFAULT_RAW_RECVMBOX_SIZE;
DieterGraef	0:d26c1b55cfca	589	#else
DieterGraef	0:d26c1b55cfca	590	switch(NETCONNTYPE_GROUP(t)) {
DieterGraef	0:d26c1b55cfca	591	#if LWIP_RAW
DieterGraef	0:d26c1b55cfca	592	case NETCONN_RAW:
DieterGraef	0:d26c1b55cfca	593	size = DEFAULT_RAW_RECVMBOX_SIZE;
DieterGraef	0:d26c1b55cfca	594	break;
DieterGraef	0:d26c1b55cfca	595	#endif /* LWIP_RAW */
DieterGraef	0:d26c1b55cfca	596	#if LWIP_UDP
DieterGraef	0:d26c1b55cfca	597	case NETCONN_UDP:
DieterGraef	0:d26c1b55cfca	598	size = DEFAULT_UDP_RECVMBOX_SIZE;
DieterGraef	0:d26c1b55cfca	599	break;
DieterGraef	0:d26c1b55cfca	600	#endif /* LWIP_UDP */
DieterGraef	0:d26c1b55cfca	601	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	602	case NETCONN_TCP:
DieterGraef	0:d26c1b55cfca	603	size = DEFAULT_TCP_RECVMBOX_SIZE;
DieterGraef	0:d26c1b55cfca	604	break;
DieterGraef	0:d26c1b55cfca	605	#endif /* LWIP_TCP */
DieterGraef	0:d26c1b55cfca	606	default:
DieterGraef	0:d26c1b55cfca	607	LWIP_ASSERT("netconn_alloc: undefined netconn_type", 0);
DieterGraef	0:d26c1b55cfca	608	goto free_and_return;
DieterGraef	0:d26c1b55cfca	609	}
DieterGraef	0:d26c1b55cfca	610	#endif
DieterGraef	0:d26c1b55cfca	611
DieterGraef	0:d26c1b55cfca	612	if (sys_sem_new(&conn->op_completed, 0) != ERR_OK) {
DieterGraef	0:d26c1b55cfca	613	goto free_and_return;
DieterGraef	0:d26c1b55cfca	614	}
DieterGraef	0:d26c1b55cfca	615	if (sys_mbox_new(&conn->recvmbox, size) != ERR_OK) {
DieterGraef	0:d26c1b55cfca	616	sys_sem_free(&conn->op_completed);
DieterGraef	0:d26c1b55cfca	617	goto free_and_return;
DieterGraef	0:d26c1b55cfca	618	}
DieterGraef	0:d26c1b55cfca	619
DieterGraef	0:d26c1b55cfca	620	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	621	sys_mbox_set_invalid(&conn->acceptmbox);
DieterGraef	0:d26c1b55cfca	622	#endif
DieterGraef	0:d26c1b55cfca	623	conn->state = NETCONN_NONE;
DieterGraef	0:d26c1b55cfca	624	#if LWIP_SOCKET
DieterGraef	0:d26c1b55cfca	625	/* initialize socket to -1 since 0 is a valid socket */
DieterGraef	0:d26c1b55cfca	626	conn->socket = -1;
DieterGraef	0:d26c1b55cfca	627	#endif /* LWIP_SOCKET */
DieterGraef	0:d26c1b55cfca	628	conn->callback = callback;
DieterGraef	0:d26c1b55cfca	629	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	630	conn->current_msg = NULL;
DieterGraef	0:d26c1b55cfca	631	conn->write_offset = 0;
DieterGraef	0:d26c1b55cfca	632	#endif /* LWIP_TCP */
DieterGraef	0:d26c1b55cfca	633	#if LWIP_SO_SNDTIMEO
DieterGraef	0:d26c1b55cfca	634	conn->send_timeout = 0;
DieterGraef	0:d26c1b55cfca	635	#endif /* LWIP_SO_SNDTIMEO */
DieterGraef	0:d26c1b55cfca	636	#if LWIP_SO_RCVTIMEO
DieterGraef	0:d26c1b55cfca	637	conn->recv_timeout = 0;
DieterGraef	0:d26c1b55cfca	638	#endif /* LWIP_SO_RCVTIMEO */
DieterGraef	0:d26c1b55cfca	639	#if LWIP_SO_RCVBUF
DieterGraef	0:d26c1b55cfca	640	conn->recv_bufsize = RECV_BUFSIZE_DEFAULT;
DieterGraef	0:d26c1b55cfca	641	conn->recv_avail = 0;
DieterGraef	0:d26c1b55cfca	642	#endif /* LWIP_SO_RCVBUF */
DieterGraef	0:d26c1b55cfca	643	conn->flags = 0;
DieterGraef	0:d26c1b55cfca	644	return conn;
DieterGraef	0:d26c1b55cfca	645	free_and_return:
DieterGraef	0:d26c1b55cfca	646	memp_free(MEMP_NETCONN, conn);
DieterGraef	0:d26c1b55cfca	647	return NULL;
DieterGraef	0:d26c1b55cfca	648	}
DieterGraef	0:d26c1b55cfca	649
DieterGraef	0:d26c1b55cfca	650	/**
DieterGraef	0:d26c1b55cfca	651	* Delete a netconn and all its resources.
DieterGraef	0:d26c1b55cfca	652	* The pcb is NOT freed (since we might not be in the right thread context do this).
DieterGraef	0:d26c1b55cfca	653	*
DieterGraef	0:d26c1b55cfca	654	* @param conn the netconn to free
DieterGraef	0:d26c1b55cfca	655	*/
DieterGraef	0:d26c1b55cfca	656	void
DieterGraef	0:d26c1b55cfca	657	netconn_free(struct netconn *conn)
DieterGraef	0:d26c1b55cfca	658	{
DieterGraef	0:d26c1b55cfca	659	LWIP_ASSERT("PCB must be deallocated outside this function", conn->pcb.tcp == NULL);
DieterGraef	0:d26c1b55cfca	660	LWIP_ASSERT("recvmbox must be deallocated before calling this function",
DieterGraef	0:d26c1b55cfca	661	!sys_mbox_valid(&conn->recvmbox));
DieterGraef	0:d26c1b55cfca	662	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	663	LWIP_ASSERT("acceptmbox must be deallocated before calling this function",
DieterGraef	0:d26c1b55cfca	664	!sys_mbox_valid(&conn->acceptmbox));
DieterGraef	0:d26c1b55cfca	665	#endif /* LWIP_TCP */
DieterGraef	0:d26c1b55cfca	666
DieterGraef	0:d26c1b55cfca	667	sys_sem_free(&conn->op_completed);
DieterGraef	0:d26c1b55cfca	668	sys_sem_set_invalid(&conn->op_completed);
DieterGraef	0:d26c1b55cfca	669
DieterGraef	0:d26c1b55cfca	670	memp_free(MEMP_NETCONN, conn);
DieterGraef	0:d26c1b55cfca	671	}
DieterGraef	0:d26c1b55cfca	672
DieterGraef	0:d26c1b55cfca	673	/**
DieterGraef	0:d26c1b55cfca	674	* Delete rcvmbox and acceptmbox of a netconn and free the left-over data in
DieterGraef	0:d26c1b55cfca	675	* these mboxes
DieterGraef	0:d26c1b55cfca	676	*
DieterGraef	0:d26c1b55cfca	677	* @param conn the netconn to free
DieterGraef	0:d26c1b55cfca	678	* @bytes_drained bytes drained from recvmbox
DieterGraef	0:d26c1b55cfca	679	* @accepts_drained pending connections drained from acceptmbox
DieterGraef	0:d26c1b55cfca	680	*/
DieterGraef	0:d26c1b55cfca	681	static void
DieterGraef	0:d26c1b55cfca	682	netconn_drain(struct netconn *conn)
DieterGraef	0:d26c1b55cfca	683	{
DieterGraef	0:d26c1b55cfca	684	void *mem;
DieterGraef	0:d26c1b55cfca	685	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	686	struct pbuf *p;
DieterGraef	0:d26c1b55cfca	687	#endif /* LWIP_TCP */
DieterGraef	0:d26c1b55cfca	688
DieterGraef	0:d26c1b55cfca	689	/* This runs in tcpip_thread, so we don't need to lock against rx packets */
DieterGraef	0:d26c1b55cfca	690
DieterGraef	0:d26c1b55cfca	691	/* Delete and drain the recvmbox. */
DieterGraef	0:d26c1b55cfca	692	if (sys_mbox_valid(&conn->recvmbox)) {
DieterGraef	0:d26c1b55cfca	693	while (sys_mbox_tryfetch(&conn->recvmbox, &mem) != SYS_MBOX_EMPTY) {
DieterGraef	0:d26c1b55cfca	694	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	695	if (conn->type == NETCONN_TCP) {
DieterGraef	0:d26c1b55cfca	696	if(mem != NULL) {
DieterGraef	0:d26c1b55cfca	697	p = (struct pbuf*)mem;
DieterGraef	0:d26c1b55cfca	698	/* pcb might be set to NULL already by err_tcp() */
DieterGraef	0:d26c1b55cfca	699	if (conn->pcb.tcp != NULL) {
DieterGraef	0:d26c1b55cfca	700	tcp_recved(conn->pcb.tcp, p->tot_len);
DieterGraef	0:d26c1b55cfca	701	}
DieterGraef	0:d26c1b55cfca	702	pbuf_free(p);
DieterGraef	0:d26c1b55cfca	703	}
DieterGraef	0:d26c1b55cfca	704	} else
DieterGraef	0:d26c1b55cfca	705	#endif /* LWIP_TCP */
DieterGraef	0:d26c1b55cfca	706	{
DieterGraef	0:d26c1b55cfca	707	netbuf_delete((struct netbuf *)mem);
DieterGraef	0:d26c1b55cfca	708	}
DieterGraef	0:d26c1b55cfca	709	}
DieterGraef	0:d26c1b55cfca	710	sys_mbox_free(&conn->recvmbox);
DieterGraef	0:d26c1b55cfca	711	sys_mbox_set_invalid(&conn->recvmbox);
DieterGraef	0:d26c1b55cfca	712	}
DieterGraef	0:d26c1b55cfca	713
DieterGraef	0:d26c1b55cfca	714	/* Delete and drain the acceptmbox. */
DieterGraef	0:d26c1b55cfca	715	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	716	if (sys_mbox_valid(&conn->acceptmbox)) {
DieterGraef	0:d26c1b55cfca	717	while (sys_mbox_tryfetch(&conn->acceptmbox, &mem) != SYS_MBOX_EMPTY) {
DieterGraef	0:d26c1b55cfca	718	struct netconn newconn = (struct netconn )mem;
DieterGraef	0:d26c1b55cfca	719	/* Only tcp pcbs have an acceptmbox, so no need to check conn->type */
DieterGraef	0:d26c1b55cfca	720	/* pcb might be set to NULL already by err_tcp() */
DieterGraef	0:d26c1b55cfca	721	if (conn->pcb.tcp != NULL) {
DieterGraef	0:d26c1b55cfca	722	tcp_accepted(conn->pcb.tcp);
DieterGraef	0:d26c1b55cfca	723	}
DieterGraef	0:d26c1b55cfca	724	/* drain recvmbox */
DieterGraef	0:d26c1b55cfca	725	netconn_drain(newconn);
DieterGraef	0:d26c1b55cfca	726	if (newconn->pcb.tcp != NULL) {
DieterGraef	0:d26c1b55cfca	727	tcp_abort(newconn->pcb.tcp);
DieterGraef	0:d26c1b55cfca	728	newconn->pcb.tcp = NULL;
DieterGraef	0:d26c1b55cfca	729	}
DieterGraef	0:d26c1b55cfca	730	netconn_free(newconn);
DieterGraef	0:d26c1b55cfca	731	}
DieterGraef	0:d26c1b55cfca	732	sys_mbox_free(&conn->acceptmbox);
DieterGraef	0:d26c1b55cfca	733	sys_mbox_set_invalid(&conn->acceptmbox);
DieterGraef	0:d26c1b55cfca	734	}
DieterGraef	0:d26c1b55cfca	735	#endif /* LWIP_TCP */
DieterGraef	0:d26c1b55cfca	736	}
DieterGraef	0:d26c1b55cfca	737
DieterGraef	0:d26c1b55cfca	738	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	739	/**
DieterGraef	0:d26c1b55cfca	740	* Internal helper function to close a TCP netconn: since this sometimes
DieterGraef	0:d26c1b55cfca	741	* doesn't work at the first attempt, this function is called from multiple
DieterGraef	0:d26c1b55cfca	742	* places.
DieterGraef	0:d26c1b55cfca	743	*
DieterGraef	0:d26c1b55cfca	744	* @param conn the TCP netconn to close
DieterGraef	0:d26c1b55cfca	745	*/
DieterGraef	0:d26c1b55cfca	746	static void
DieterGraef	0:d26c1b55cfca	747	do_close_internal(struct netconn *conn)
DieterGraef	0:d26c1b55cfca	748	{
DieterGraef	0:d26c1b55cfca	749	err_t err;
DieterGraef	0:d26c1b55cfca	750	u8_t shut, shut_rx, shut_tx, close;
DieterGraef	0:d26c1b55cfca	751
DieterGraef	0:d26c1b55cfca	752	LWIP_ASSERT("invalid conn", (conn != NULL));
DieterGraef	0:d26c1b55cfca	753	LWIP_ASSERT("this is for tcp netconns only", (conn->type == NETCONN_TCP));
DieterGraef	0:d26c1b55cfca	754	LWIP_ASSERT("conn must be in state NETCONN_CLOSE", (conn->state == NETCONN_CLOSE));
DieterGraef	0:d26c1b55cfca	755	LWIP_ASSERT("pcb already closed", (conn->pcb.tcp != NULL));
DieterGraef	0:d26c1b55cfca	756	LWIP_ASSERT("conn->current_msg != NULL", conn->current_msg != NULL);
DieterGraef	0:d26c1b55cfca	757
DieterGraef	0:d26c1b55cfca	758	shut = conn->current_msg->msg.sd.shut;
DieterGraef	0:d26c1b55cfca	759	shut_rx = shut & NETCONN_SHUT_RD;
DieterGraef	0:d26c1b55cfca	760	shut_tx = shut & NETCONN_SHUT_WR;
DieterGraef	0:d26c1b55cfca	761	/* shutting down both ends is the same as closing */
DieterGraef	0:d26c1b55cfca	762	close = shut == NETCONN_SHUT_RDWR;
DieterGraef	0:d26c1b55cfca	763
DieterGraef	0:d26c1b55cfca	764	/* Set back some callback pointers */
DieterGraef	0:d26c1b55cfca	765	if (close) {
DieterGraef	0:d26c1b55cfca	766	tcp_arg(conn->pcb.tcp, NULL);
DieterGraef	0:d26c1b55cfca	767	}
DieterGraef	0:d26c1b55cfca	768	if (conn->pcb.tcp->state == LISTEN) {
DieterGraef	0:d26c1b55cfca	769	tcp_accept(conn->pcb.tcp, NULL);
DieterGraef	0:d26c1b55cfca	770	} else {
DieterGraef	0:d26c1b55cfca	771	/* some callbacks have to be reset if tcp_close is not successful */
DieterGraef	0:d26c1b55cfca	772	if (shut_rx) {
DieterGraef	0:d26c1b55cfca	773	tcp_recv(conn->pcb.tcp, NULL);
DieterGraef	0:d26c1b55cfca	774	tcp_accept(conn->pcb.tcp, NULL);
DieterGraef	0:d26c1b55cfca	775	}
DieterGraef	0:d26c1b55cfca	776	if (shut_tx) {
DieterGraef	0:d26c1b55cfca	777	tcp_sent(conn->pcb.tcp, NULL);
DieterGraef	0:d26c1b55cfca	778	}
DieterGraef	0:d26c1b55cfca	779	if (close) {
DieterGraef	0:d26c1b55cfca	780	tcp_poll(conn->pcb.tcp, NULL, 4);
DieterGraef	0:d26c1b55cfca	781	tcp_err(conn->pcb.tcp, NULL);
DieterGraef	0:d26c1b55cfca	782	}
DieterGraef	0:d26c1b55cfca	783	}
DieterGraef	0:d26c1b55cfca	784	/* Try to close the connection */
DieterGraef	0:d26c1b55cfca	785	if (close) {
DieterGraef	0:d26c1b55cfca	786	err = tcp_close(conn->pcb.tcp);
DieterGraef	0:d26c1b55cfca	787	} else {
DieterGraef	0:d26c1b55cfca	788	err = tcp_shutdown(conn->pcb.tcp, shut_rx, shut_tx);
DieterGraef	0:d26c1b55cfca	789	}
DieterGraef	0:d26c1b55cfca	790	if (err == ERR_OK) {
DieterGraef	0:d26c1b55cfca	791	/* Closing succeeded */
DieterGraef	0:d26c1b55cfca	792	conn->current_msg->err = ERR_OK;
DieterGraef	0:d26c1b55cfca	793	conn->current_msg = NULL;
DieterGraef	0:d26c1b55cfca	794	conn->state = NETCONN_NONE;
DieterGraef	0:d26c1b55cfca	795	if (close) {
DieterGraef	0:d26c1b55cfca	796	/* Set back some callback pointers as conn is going away */
DieterGraef	0:d26c1b55cfca	797	conn->pcb.tcp = NULL;
DieterGraef	0:d26c1b55cfca	798	/* Trigger select() in socket layer. Make sure everybody notices activity
DieterGraef	0:d26c1b55cfca	799	on the connection, error first! */
DieterGraef	0:d26c1b55cfca	800	API_EVENT(conn, NETCONN_EVT_ERROR, 0);
DieterGraef	0:d26c1b55cfca	801	}
DieterGraef	0:d26c1b55cfca	802	if (shut_rx) {
DieterGraef	0:d26c1b55cfca	803	API_EVENT(conn, NETCONN_EVT_RCVPLUS, 0);
DieterGraef	0:d26c1b55cfca	804	}
DieterGraef	0:d26c1b55cfca	805	if (shut_tx) {
DieterGraef	0:d26c1b55cfca	806	API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
DieterGraef	0:d26c1b55cfca	807	}
DieterGraef	0:d26c1b55cfca	808	/* wake up the application task */
DieterGraef	0:d26c1b55cfca	809	sys_sem_signal(&conn->op_completed);
DieterGraef	0:d26c1b55cfca	810	} else {
DieterGraef	0:d26c1b55cfca	811	/* Closing failed, restore some of the callbacks */
DieterGraef	0:d26c1b55cfca	812	/* Closing of listen pcb will never fail! */
DieterGraef	0:d26c1b55cfca	813	LWIP_ASSERT("Closing a listen pcb may not fail!", (conn->pcb.tcp->state != LISTEN));
DieterGraef	0:d26c1b55cfca	814	tcp_sent(conn->pcb.tcp, sent_tcp);
DieterGraef	0:d26c1b55cfca	815	tcp_poll(conn->pcb.tcp, poll_tcp, 4);
DieterGraef	0:d26c1b55cfca	816	tcp_err(conn->pcb.tcp, err_tcp);
DieterGraef	0:d26c1b55cfca	817	tcp_arg(conn->pcb.tcp, conn);
DieterGraef	0:d26c1b55cfca	818	/* don't restore recv callback: we don't want to receive any more data */
DieterGraef	0:d26c1b55cfca	819	}
DieterGraef	0:d26c1b55cfca	820	/* If closing didn't succeed, we get called again either
DieterGraef	0:d26c1b55cfca	821	from poll_tcp or from sent_tcp */
DieterGraef	0:d26c1b55cfca	822	}
DieterGraef	0:d26c1b55cfca	823	#endif /* LWIP_TCP */
DieterGraef	0:d26c1b55cfca	824
DieterGraef	0:d26c1b55cfca	825	/**
DieterGraef	0:d26c1b55cfca	826	* Delete the pcb inside a netconn.
DieterGraef	0:d26c1b55cfca	827	* Called from netconn_delete.
DieterGraef	0:d26c1b55cfca	828	*
DieterGraef	0:d26c1b55cfca	829	* @param msg the api_msg_msg pointing to the connection
DieterGraef	0:d26c1b55cfca	830	*/
DieterGraef	0:d26c1b55cfca	831	void
DieterGraef	0:d26c1b55cfca	832	do_delconn(struct api_msg_msg *msg)
DieterGraef	0:d26c1b55cfca	833	{
DieterGraef	0:d26c1b55cfca	834	/* @todo TCP: abort running write/connect? */
DieterGraef	0:d26c1b55cfca	835	if ((msg->conn->state != NETCONN_NONE) &&
DieterGraef	0:d26c1b55cfca	836	(msg->conn->state != NETCONN_LISTEN) &&
DieterGraef	0:d26c1b55cfca	837	(msg->conn->state != NETCONN_CONNECT)) {
DieterGraef	0:d26c1b55cfca	838	/* this only happens for TCP netconns */
DieterGraef	0:d26c1b55cfca	839	LWIP_ASSERT("msg->conn->type == NETCONN_TCP", msg->conn->type == NETCONN_TCP);
DieterGraef	0:d26c1b55cfca	840	msg->err = ERR_INPROGRESS;
DieterGraef	0:d26c1b55cfca	841	} else {
DieterGraef	0:d26c1b55cfca	842	LWIP_ASSERT("blocking connect in progress",
DieterGraef	0:d26c1b55cfca	843	(msg->conn->state != NETCONN_CONNECT) \|\| IN_NONBLOCKING_CONNECT(msg->conn));
DieterGraef	0:d26c1b55cfca	844	/* Drain and delete mboxes */
DieterGraef	0:d26c1b55cfca	845	netconn_drain(msg->conn);
DieterGraef	0:d26c1b55cfca	846
DieterGraef	0:d26c1b55cfca	847	if (msg->conn->pcb.tcp != NULL) {
DieterGraef	0:d26c1b55cfca	848
DieterGraef	0:d26c1b55cfca	849	switch (NETCONNTYPE_GROUP(msg->conn->type)) {
DieterGraef	0:d26c1b55cfca	850	#if LWIP_RAW
DieterGraef	0:d26c1b55cfca	851	case NETCONN_RAW:
DieterGraef	0:d26c1b55cfca	852	raw_remove(msg->conn->pcb.raw);
DieterGraef	0:d26c1b55cfca	853	break;
DieterGraef	0:d26c1b55cfca	854	#endif /* LWIP_RAW */
DieterGraef	0:d26c1b55cfca	855	#if LWIP_UDP
DieterGraef	0:d26c1b55cfca	856	case NETCONN_UDP:
DieterGraef	0:d26c1b55cfca	857	msg->conn->pcb.udp->recv_arg = NULL;
DieterGraef	0:d26c1b55cfca	858	udp_remove(msg->conn->pcb.udp);
DieterGraef	0:d26c1b55cfca	859	break;
DieterGraef	0:d26c1b55cfca	860	#endif /* LWIP_UDP */
DieterGraef	0:d26c1b55cfca	861	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	862	case NETCONN_TCP:
DieterGraef	0:d26c1b55cfca	863	LWIP_ASSERT("already writing or closing", msg->conn->current_msg == NULL &&
DieterGraef	0:d26c1b55cfca	864	msg->conn->write_offset == 0);
DieterGraef	0:d26c1b55cfca	865	msg->conn->state = NETCONN_CLOSE;
DieterGraef	0:d26c1b55cfca	866	msg->msg.sd.shut = NETCONN_SHUT_RDWR;
DieterGraef	0:d26c1b55cfca	867	msg->conn->current_msg = msg;
DieterGraef	0:d26c1b55cfca	868	do_close_internal(msg->conn);
DieterGraef	0:d26c1b55cfca	869	/* API_EVENT is called inside do_close_internal, before releasing
DieterGraef	0:d26c1b55cfca	870	the application thread, so we can return at this point! */
DieterGraef	0:d26c1b55cfca	871	return;
DieterGraef	0:d26c1b55cfca	872	#endif /* LWIP_TCP */
DieterGraef	0:d26c1b55cfca	873	default:
DieterGraef	0:d26c1b55cfca	874	break;
DieterGraef	0:d26c1b55cfca	875	}
DieterGraef	0:d26c1b55cfca	876	msg->conn->pcb.tcp = NULL;
DieterGraef	0:d26c1b55cfca	877	}
DieterGraef	0:d26c1b55cfca	878	/* tcp netconns don't come here! */
DieterGraef	0:d26c1b55cfca	879
DieterGraef	0:d26c1b55cfca	880	/* @todo: this lets select make the socket readable and writable,
DieterGraef	0:d26c1b55cfca	881	which is wrong! errfd instead? */
DieterGraef	0:d26c1b55cfca	882	API_EVENT(msg->conn, NETCONN_EVT_RCVPLUS, 0);
DieterGraef	0:d26c1b55cfca	883	API_EVENT(msg->conn, NETCONN_EVT_SENDPLUS, 0);
DieterGraef	0:d26c1b55cfca	884	}
DieterGraef	0:d26c1b55cfca	885	if (sys_sem_valid(&msg->conn->op_completed)) {
DieterGraef	0:d26c1b55cfca	886	sys_sem_signal(&msg->conn->op_completed);
DieterGraef	0:d26c1b55cfca	887	}
DieterGraef	0:d26c1b55cfca	888	}
DieterGraef	0:d26c1b55cfca	889
DieterGraef	0:d26c1b55cfca	890	/**
DieterGraef	0:d26c1b55cfca	891	* Bind a pcb contained in a netconn
DieterGraef	0:d26c1b55cfca	892	* Called from netconn_bind.
DieterGraef	0:d26c1b55cfca	893	*
DieterGraef	0:d26c1b55cfca	894	* @param msg the api_msg_msg pointing to the connection and containing
DieterGraef	0:d26c1b55cfca	895	* the IP address and port to bind to
DieterGraef	0:d26c1b55cfca	896	*/
DieterGraef	0:d26c1b55cfca	897	void
DieterGraef	0:d26c1b55cfca	898	do_bind(struct api_msg_msg *msg)
DieterGraef	0:d26c1b55cfca	899	{
DieterGraef	0:d26c1b55cfca	900	if (ERR_IS_FATAL(msg->conn->last_err)) {
DieterGraef	0:d26c1b55cfca	901	msg->err = msg->conn->last_err;
DieterGraef	0:d26c1b55cfca	902	} else {
DieterGraef	0:d26c1b55cfca	903	msg->err = ERR_VAL;
DieterGraef	0:d26c1b55cfca	904	if (msg->conn->pcb.tcp != NULL) {
DieterGraef	0:d26c1b55cfca	905	switch (NETCONNTYPE_GROUP(msg->conn->type)) {
DieterGraef	0:d26c1b55cfca	906	#if LWIP_RAW
DieterGraef	0:d26c1b55cfca	907	case NETCONN_RAW:
DieterGraef	0:d26c1b55cfca	908	msg->err = raw_bind(msg->conn->pcb.raw, msg->msg.bc.ipaddr);
DieterGraef	0:d26c1b55cfca	909	break;
DieterGraef	0:d26c1b55cfca	910	#endif /* LWIP_RAW */
DieterGraef	0:d26c1b55cfca	911	#if LWIP_UDP
DieterGraef	0:d26c1b55cfca	912	case NETCONN_UDP:
DieterGraef	0:d26c1b55cfca	913	msg->err = udp_bind(msg->conn->pcb.udp, msg->msg.bc.ipaddr, msg->msg.bc.port);
DieterGraef	0:d26c1b55cfca	914	break;
DieterGraef	0:d26c1b55cfca	915	#endif /* LWIP_UDP */
DieterGraef	0:d26c1b55cfca	916	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	917	case NETCONN_TCP:
DieterGraef	0:d26c1b55cfca	918	msg->err = tcp_bind(msg->conn->pcb.tcp, msg->msg.bc.ipaddr, msg->msg.bc.port);
DieterGraef	0:d26c1b55cfca	919	break;
DieterGraef	0:d26c1b55cfca	920	#endif /* LWIP_TCP */
DieterGraef	0:d26c1b55cfca	921	default:
DieterGraef	0:d26c1b55cfca	922	break;
DieterGraef	0:d26c1b55cfca	923	}
DieterGraef	0:d26c1b55cfca	924	}
DieterGraef	0:d26c1b55cfca	925	}
DieterGraef	0:d26c1b55cfca	926	TCPIP_APIMSG_ACK(msg);
DieterGraef	0:d26c1b55cfca	927	}
DieterGraef	0:d26c1b55cfca	928
DieterGraef	0:d26c1b55cfca	929	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	930	/**
DieterGraef	0:d26c1b55cfca	931	* TCP callback function if a connection (opened by tcp_connect/do_connect) has
DieterGraef	0:d26c1b55cfca	932	* been established (or reset by the remote host).
DieterGraef	0:d26c1b55cfca	933	*
DieterGraef	0:d26c1b55cfca	934	* @see tcp.h (struct tcp_pcb.connected) for parameters and return values
DieterGraef	0:d26c1b55cfca	935	*/
DieterGraef	0:d26c1b55cfca	936	static err_t
DieterGraef	0:d26c1b55cfca	937	do_connected(void arg, struct tcp_pcb pcb, err_t err)
DieterGraef	0:d26c1b55cfca	938	{
DieterGraef	0:d26c1b55cfca	939	struct netconn *conn;
DieterGraef	0:d26c1b55cfca	940	int was_blocking;
DieterGraef	0:d26c1b55cfca	941
DieterGraef	0:d26c1b55cfca	942	LWIP_UNUSED_ARG(pcb);
DieterGraef	0:d26c1b55cfca	943
DieterGraef	0:d26c1b55cfca	944	conn = (struct netconn *)arg;
DieterGraef	0:d26c1b55cfca	945
DieterGraef	0:d26c1b55cfca	946	if (conn == NULL) {
DieterGraef	0:d26c1b55cfca	947	return ERR_VAL;
DieterGraef	0:d26c1b55cfca	948	}
DieterGraef	0:d26c1b55cfca	949
DieterGraef	0:d26c1b55cfca	950	LWIP_ASSERT("conn->state == NETCONN_CONNECT", conn->state == NETCONN_CONNECT);
DieterGraef	0:d26c1b55cfca	951	LWIP_ASSERT("(conn->current_msg != NULL) \|\| conn->in_non_blocking_connect",
DieterGraef	0:d26c1b55cfca	952	(conn->current_msg != NULL) \|\| IN_NONBLOCKING_CONNECT(conn));
DieterGraef	0:d26c1b55cfca	953
DieterGraef	0:d26c1b55cfca	954	if (conn->current_msg != NULL) {
DieterGraef	0:d26c1b55cfca	955	conn->current_msg->err = err;
DieterGraef	0:d26c1b55cfca	956	}
DieterGraef	0:d26c1b55cfca	957	if ((conn->type == NETCONN_TCP) && (err == ERR_OK)) {
DieterGraef	0:d26c1b55cfca	958	setup_tcp(conn);
DieterGraef	0:d26c1b55cfca	959	}
DieterGraef	0:d26c1b55cfca	960	was_blocking = !IN_NONBLOCKING_CONNECT(conn);
DieterGraef	0:d26c1b55cfca	961	SET_NONBLOCKING_CONNECT(conn, 0);
DieterGraef	0:d26c1b55cfca	962	conn->current_msg = NULL;
DieterGraef	0:d26c1b55cfca	963	conn->state = NETCONN_NONE;
DieterGraef	0:d26c1b55cfca	964	if (!was_blocking) {
DieterGraef	0:d26c1b55cfca	965	NETCONN_SET_SAFE_ERR(conn, ERR_OK);
DieterGraef	0:d26c1b55cfca	966	}
DieterGraef	0:d26c1b55cfca	967	API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
DieterGraef	0:d26c1b55cfca	968
DieterGraef	0:d26c1b55cfca	969	if (was_blocking) {
DieterGraef	0:d26c1b55cfca	970	sys_sem_signal(&conn->op_completed);
DieterGraef	0:d26c1b55cfca	971	}
DieterGraef	0:d26c1b55cfca	972	return ERR_OK;
DieterGraef	0:d26c1b55cfca	973	}
DieterGraef	0:d26c1b55cfca	974	#endif /* LWIP_TCP */
DieterGraef	0:d26c1b55cfca	975
DieterGraef	0:d26c1b55cfca	976	/**
DieterGraef	0:d26c1b55cfca	977	* Connect a pcb contained inside a netconn
DieterGraef	0:d26c1b55cfca	978	* Called from netconn_connect.
DieterGraef	0:d26c1b55cfca	979	*
DieterGraef	0:d26c1b55cfca	980	* @param msg the api_msg_msg pointing to the connection and containing
DieterGraef	0:d26c1b55cfca	981	* the IP address and port to connect to
DieterGraef	0:d26c1b55cfca	982	*/
DieterGraef	0:d26c1b55cfca	983	void
DieterGraef	0:d26c1b55cfca	984	do_connect(struct api_msg_msg *msg)
DieterGraef	0:d26c1b55cfca	985	{
DieterGraef	0:d26c1b55cfca	986	if (msg->conn->pcb.tcp == NULL) {
DieterGraef	0:d26c1b55cfca	987	/* This may happen when calling netconn_connect() a second time */
DieterGraef	0:d26c1b55cfca	988	msg->err = ERR_CLSD;
DieterGraef	0:d26c1b55cfca	989	} else {
DieterGraef	0:d26c1b55cfca	990	switch (NETCONNTYPE_GROUP(msg->conn->type)) {
DieterGraef	0:d26c1b55cfca	991	#if LWIP_RAW
DieterGraef	0:d26c1b55cfca	992	case NETCONN_RAW:
DieterGraef	0:d26c1b55cfca	993	msg->err = raw_connect(msg->conn->pcb.raw, msg->msg.bc.ipaddr);
DieterGraef	0:d26c1b55cfca	994	break;
DieterGraef	0:d26c1b55cfca	995	#endif /* LWIP_RAW */
DieterGraef	0:d26c1b55cfca	996	#if LWIP_UDP
DieterGraef	0:d26c1b55cfca	997	case NETCONN_UDP:
DieterGraef	0:d26c1b55cfca	998	msg->err = udp_connect(msg->conn->pcb.udp, msg->msg.bc.ipaddr, msg->msg.bc.port);
DieterGraef	0:d26c1b55cfca	999	break;
DieterGraef	0:d26c1b55cfca	1000	#endif /* LWIP_UDP */
DieterGraef	0:d26c1b55cfca	1001	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	1002	case NETCONN_TCP:
DieterGraef	0:d26c1b55cfca	1003	/* Prevent connect while doing any other action. */
DieterGraef	0:d26c1b55cfca	1004	if (msg->conn->state != NETCONN_NONE) {
DieterGraef	0:d26c1b55cfca	1005	msg->err = ERR_ISCONN;
DieterGraef	0:d26c1b55cfca	1006	} else {
DieterGraef	0:d26c1b55cfca	1007	setup_tcp(msg->conn);
DieterGraef	0:d26c1b55cfca	1008	msg->err = tcp_connect(msg->conn->pcb.tcp, msg->msg.bc.ipaddr,
DieterGraef	0:d26c1b55cfca	1009	msg->msg.bc.port, do_connected);
DieterGraef	0:d26c1b55cfca	1010	if (msg->err == ERR_OK) {
DieterGraef	0:d26c1b55cfca	1011	u8_t non_blocking = netconn_is_nonblocking(msg->conn);
DieterGraef	0:d26c1b55cfca	1012	msg->conn->state = NETCONN_CONNECT;
DieterGraef	0:d26c1b55cfca	1013	SET_NONBLOCKING_CONNECT(msg->conn, non_blocking);
DieterGraef	0:d26c1b55cfca	1014	if (non_blocking) {
DieterGraef	0:d26c1b55cfca	1015	msg->err = ERR_INPROGRESS;
DieterGraef	0:d26c1b55cfca	1016	} else {
DieterGraef	0:d26c1b55cfca	1017	msg->conn->current_msg = msg;
DieterGraef	0:d26c1b55cfca	1018	/* sys_sem_signal() is called from do_connected (or err_tcp()),
DieterGraef	0:d26c1b55cfca	1019	* when the connection is established! */
DieterGraef	0:d26c1b55cfca	1020	return;
DieterGraef	0:d26c1b55cfca	1021	}
DieterGraef	0:d26c1b55cfca	1022	}
DieterGraef	0:d26c1b55cfca	1023	}
DieterGraef	0:d26c1b55cfca	1024	break;
DieterGraef	0:d26c1b55cfca	1025	#endif /* LWIP_TCP */
DieterGraef	0:d26c1b55cfca	1026	default:
DieterGraef	0:d26c1b55cfca	1027	LWIP_ERROR("Invalid netconn type", 0, do{ msg->err = ERR_VAL; }while(0));
DieterGraef	0:d26c1b55cfca	1028	break;
DieterGraef	0:d26c1b55cfca	1029	}
DieterGraef	0:d26c1b55cfca	1030	}
DieterGraef	0:d26c1b55cfca	1031	sys_sem_signal(&msg->conn->op_completed);
DieterGraef	0:d26c1b55cfca	1032	}
DieterGraef	0:d26c1b55cfca	1033
DieterGraef	0:d26c1b55cfca	1034	/**
DieterGraef	0:d26c1b55cfca	1035	* Connect a pcb contained inside a netconn
DieterGraef	0:d26c1b55cfca	1036	* Only used for UDP netconns.
DieterGraef	0:d26c1b55cfca	1037	* Called from netconn_disconnect.
DieterGraef	0:d26c1b55cfca	1038	*
DieterGraef	0:d26c1b55cfca	1039	* @param msg the api_msg_msg pointing to the connection to disconnect
DieterGraef	0:d26c1b55cfca	1040	*/
DieterGraef	0:d26c1b55cfca	1041	void
DieterGraef	0:d26c1b55cfca	1042	do_disconnect(struct api_msg_msg *msg)
DieterGraef	0:d26c1b55cfca	1043	{
DieterGraef	0:d26c1b55cfca	1044	#if LWIP_UDP
DieterGraef	0:d26c1b55cfca	1045	if (NETCONNTYPE_GROUP(msg->conn->type) == NETCONN_UDP) {
DieterGraef	0:d26c1b55cfca	1046	udp_disconnect(msg->conn->pcb.udp);
DieterGraef	0:d26c1b55cfca	1047	msg->err = ERR_OK;
DieterGraef	0:d26c1b55cfca	1048	} else
DieterGraef	0:d26c1b55cfca	1049	#endif /* LWIP_UDP */
DieterGraef	0:d26c1b55cfca	1050	{
DieterGraef	0:d26c1b55cfca	1051	msg->err = ERR_VAL;
DieterGraef	0:d26c1b55cfca	1052	}
DieterGraef	0:d26c1b55cfca	1053	TCPIP_APIMSG_ACK(msg);
DieterGraef	0:d26c1b55cfca	1054	}
DieterGraef	0:d26c1b55cfca	1055
DieterGraef	0:d26c1b55cfca	1056	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	1057	/**
DieterGraef	0:d26c1b55cfca	1058	* Set a TCP pcb contained in a netconn into listen mode
DieterGraef	0:d26c1b55cfca	1059	* Called from netconn_listen.
DieterGraef	0:d26c1b55cfca	1060	*
DieterGraef	0:d26c1b55cfca	1061	* @param msg the api_msg_msg pointing to the connection
DieterGraef	0:d26c1b55cfca	1062	*/
DieterGraef	0:d26c1b55cfca	1063	void
DieterGraef	0:d26c1b55cfca	1064	do_listen(struct api_msg_msg *msg)
DieterGraef	0:d26c1b55cfca	1065	{
DieterGraef	0:d26c1b55cfca	1066	if (ERR_IS_FATAL(msg->conn->last_err)) {
DieterGraef	0:d26c1b55cfca	1067	msg->err = msg->conn->last_err;
DieterGraef	0:d26c1b55cfca	1068	} else {
DieterGraef	0:d26c1b55cfca	1069	msg->err = ERR_CONN;
DieterGraef	0:d26c1b55cfca	1070	if (msg->conn->pcb.tcp != NULL) {
DieterGraef	0:d26c1b55cfca	1071	if (msg->conn->type == NETCONN_TCP) {
DieterGraef	0:d26c1b55cfca	1072	if (msg->conn->state == NETCONN_NONE) {
DieterGraef	0:d26c1b55cfca	1073	#if TCP_LISTEN_BACKLOG
DieterGraef	0:d26c1b55cfca	1074	struct tcp_pcb* lpcb = tcp_listen_with_backlog(msg->conn->pcb.tcp, msg->msg.lb.backlog);
DieterGraef	0:d26c1b55cfca	1075	#else /* TCP_LISTEN_BACKLOG */
DieterGraef	0:d26c1b55cfca	1076	struct tcp_pcb* lpcb = tcp_listen(msg->conn->pcb.tcp);
DieterGraef	0:d26c1b55cfca	1077	#endif /* TCP_LISTEN_BACKLOG */
DieterGraef	0:d26c1b55cfca	1078	if (lpcb == NULL) {
DieterGraef	0:d26c1b55cfca	1079	/* in this case, the old pcb is still allocated */
DieterGraef	0:d26c1b55cfca	1080	msg->err = ERR_MEM;
DieterGraef	0:d26c1b55cfca	1081	} else {
DieterGraef	0:d26c1b55cfca	1082	/* delete the recvmbox and allocate the acceptmbox */
DieterGraef	0:d26c1b55cfca	1083	if (sys_mbox_valid(&msg->conn->recvmbox)) {
DieterGraef	0:d26c1b55cfca	1084	/** @todo: should we drain the recvmbox here? */
DieterGraef	0:d26c1b55cfca	1085	sys_mbox_free(&msg->conn->recvmbox);
DieterGraef	0:d26c1b55cfca	1086	sys_mbox_set_invalid(&msg->conn->recvmbox);
DieterGraef	0:d26c1b55cfca	1087	}
DieterGraef	0:d26c1b55cfca	1088	msg->err = ERR_OK;
DieterGraef	0:d26c1b55cfca	1089	if (!sys_mbox_valid(&msg->conn->acceptmbox)) {
DieterGraef	0:d26c1b55cfca	1090	msg->err = sys_mbox_new(&msg->conn->acceptmbox, DEFAULT_ACCEPTMBOX_SIZE);
DieterGraef	0:d26c1b55cfca	1091	}
DieterGraef	0:d26c1b55cfca	1092	if (msg->err == ERR_OK) {
DieterGraef	0:d26c1b55cfca	1093	msg->conn->state = NETCONN_LISTEN;
DieterGraef	0:d26c1b55cfca	1094	msg->conn->pcb.tcp = lpcb;
DieterGraef	0:d26c1b55cfca	1095	tcp_arg(msg->conn->pcb.tcp, msg->conn);
DieterGraef	0:d26c1b55cfca	1096	tcp_accept(msg->conn->pcb.tcp, accept_function);
DieterGraef	0:d26c1b55cfca	1097	} else {
DieterGraef	0:d26c1b55cfca	1098	/* since the old pcb is already deallocated, free lpcb now */
DieterGraef	0:d26c1b55cfca	1099	tcp_close(lpcb);
DieterGraef	0:d26c1b55cfca	1100	msg->conn->pcb.tcp = NULL;
DieterGraef	0:d26c1b55cfca	1101	}
DieterGraef	0:d26c1b55cfca	1102	}
DieterGraef	0:d26c1b55cfca	1103	}
DieterGraef	0:d26c1b55cfca	1104	} else {
DieterGraef	0:d26c1b55cfca	1105	msg->err = ERR_ARG;
DieterGraef	0:d26c1b55cfca	1106	}
DieterGraef	0:d26c1b55cfca	1107	}
DieterGraef	0:d26c1b55cfca	1108	}
DieterGraef	0:d26c1b55cfca	1109	TCPIP_APIMSG_ACK(msg);
DieterGraef	0:d26c1b55cfca	1110	}
DieterGraef	0:d26c1b55cfca	1111	#endif /* LWIP_TCP */
DieterGraef	0:d26c1b55cfca	1112
DieterGraef	0:d26c1b55cfca	1113	/**
DieterGraef	0:d26c1b55cfca	1114	* Send some data on a RAW or UDP pcb contained in a netconn
DieterGraef	0:d26c1b55cfca	1115	* Called from netconn_send
DieterGraef	0:d26c1b55cfca	1116	*
DieterGraef	0:d26c1b55cfca	1117	* @param msg the api_msg_msg pointing to the connection
DieterGraef	0:d26c1b55cfca	1118	*/
DieterGraef	0:d26c1b55cfca	1119	void
DieterGraef	0:d26c1b55cfca	1120	do_send(struct api_msg_msg *msg)
DieterGraef	0:d26c1b55cfca	1121	{
DieterGraef	0:d26c1b55cfca	1122	if (ERR_IS_FATAL(msg->conn->last_err)) {
DieterGraef	0:d26c1b55cfca	1123	msg->err = msg->conn->last_err;
DieterGraef	0:d26c1b55cfca	1124	} else {
DieterGraef	0:d26c1b55cfca	1125	msg->err = ERR_CONN;
DieterGraef	0:d26c1b55cfca	1126	if (msg->conn->pcb.tcp != NULL) {
DieterGraef	0:d26c1b55cfca	1127	switch (NETCONNTYPE_GROUP(msg->conn->type)) {
DieterGraef	0:d26c1b55cfca	1128	#if LWIP_RAW
DieterGraef	0:d26c1b55cfca	1129	case NETCONN_RAW:
DieterGraef	0:d26c1b55cfca	1130	if (ip_addr_isany(&msg->msg.b->addr)) {
DieterGraef	0:d26c1b55cfca	1131	msg->err = raw_send(msg->conn->pcb.raw, msg->msg.b->p);
DieterGraef	0:d26c1b55cfca	1132	} else {
DieterGraef	0:d26c1b55cfca	1133	msg->err = raw_sendto(msg->conn->pcb.raw, msg->msg.b->p, &msg->msg.b->addr);
DieterGraef	0:d26c1b55cfca	1134	}
DieterGraef	0:d26c1b55cfca	1135	break;
DieterGraef	0:d26c1b55cfca	1136	#endif
DieterGraef	0:d26c1b55cfca	1137	#if LWIP_UDP
DieterGraef	0:d26c1b55cfca	1138	case NETCONN_UDP:
DieterGraef	0:d26c1b55cfca	1139	#if LWIP_CHECKSUM_ON_COPY
DieterGraef	0:d26c1b55cfca	1140	if (ip_addr_isany(&msg->msg.b->addr)) {
DieterGraef	0:d26c1b55cfca	1141	msg->err = udp_send_chksum(msg->conn->pcb.udp, msg->msg.b->p,
DieterGraef	0:d26c1b55cfca	1142	msg->msg.b->flags & NETBUF_FLAG_CHKSUM, msg->msg.b->toport_chksum);
DieterGraef	0:d26c1b55cfca	1143	} else {
DieterGraef	0:d26c1b55cfca	1144	msg->err = udp_sendto_chksum(msg->conn->pcb.udp, msg->msg.b->p,
DieterGraef	0:d26c1b55cfca	1145	&msg->msg.b->addr, msg->msg.b->port,
DieterGraef	0:d26c1b55cfca	1146	msg->msg.b->flags & NETBUF_FLAG_CHKSUM, msg->msg.b->toport_chksum);
DieterGraef	0:d26c1b55cfca	1147	}
DieterGraef	0:d26c1b55cfca	1148	#else /* LWIP_CHECKSUM_ON_COPY */
DieterGraef	0:d26c1b55cfca	1149	if (ip_addr_isany(&msg->msg.b->addr)) {
DieterGraef	0:d26c1b55cfca	1150	msg->err = udp_send(msg->conn->pcb.udp, msg->msg.b->p);
DieterGraef	0:d26c1b55cfca	1151	} else {
DieterGraef	0:d26c1b55cfca	1152	msg->err = udp_sendto(msg->conn->pcb.udp, msg->msg.b->p, &msg->msg.b->addr, msg->msg.b->port);
DieterGraef	0:d26c1b55cfca	1153	}
DieterGraef	0:d26c1b55cfca	1154	#endif /* LWIP_CHECKSUM_ON_COPY */
DieterGraef	0:d26c1b55cfca	1155	break;
DieterGraef	0:d26c1b55cfca	1156	#endif /* LWIP_UDP */
DieterGraef	0:d26c1b55cfca	1157	default:
DieterGraef	0:d26c1b55cfca	1158	break;
DieterGraef	0:d26c1b55cfca	1159	}
DieterGraef	0:d26c1b55cfca	1160	}
DieterGraef	0:d26c1b55cfca	1161	}
DieterGraef	0:d26c1b55cfca	1162	TCPIP_APIMSG_ACK(msg);
DieterGraef	0:d26c1b55cfca	1163	}
DieterGraef	0:d26c1b55cfca	1164
DieterGraef	0:d26c1b55cfca	1165	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	1166	/**
DieterGraef	0:d26c1b55cfca	1167	* Indicate data has been received from a TCP pcb contained in a netconn
DieterGraef	0:d26c1b55cfca	1168	* Called from netconn_recv
DieterGraef	0:d26c1b55cfca	1169	*
DieterGraef	0:d26c1b55cfca	1170	* @param msg the api_msg_msg pointing to the connection
DieterGraef	0:d26c1b55cfca	1171	*/
DieterGraef	0:d26c1b55cfca	1172	void
DieterGraef	0:d26c1b55cfca	1173	do_recv(struct api_msg_msg *msg)
DieterGraef	0:d26c1b55cfca	1174	{
DieterGraef	0:d26c1b55cfca	1175	msg->err = ERR_OK;
DieterGraef	0:d26c1b55cfca	1176	if (msg->conn->pcb.tcp != NULL) {
DieterGraef	0:d26c1b55cfca	1177	if (msg->conn->type == NETCONN_TCP) {
DieterGraef	0:d26c1b55cfca	1178	#if TCP_LISTEN_BACKLOG
DieterGraef	0:d26c1b55cfca	1179	if (msg->conn->pcb.tcp->state == LISTEN) {
DieterGraef	0:d26c1b55cfca	1180	tcp_accepted(msg->conn->pcb.tcp);
DieterGraef	0:d26c1b55cfca	1181	} else
DieterGraef	0:d26c1b55cfca	1182	#endif /* TCP_LISTEN_BACKLOG */
DieterGraef	0:d26c1b55cfca	1183	{
DieterGraef	0:d26c1b55cfca	1184	u32_t remaining = msg->msg.r.len;
DieterGraef	0:d26c1b55cfca	1185	do {
DieterGraef	0:d26c1b55cfca	1186	u16_t recved = (remaining > 0xffff) ? 0xffff : (u16_t)remaining;
DieterGraef	0:d26c1b55cfca	1187	tcp_recved(msg->conn->pcb.tcp, recved);
DieterGraef	0:d26c1b55cfca	1188	remaining -= recved;
DieterGraef	0:d26c1b55cfca	1189	}while(remaining != 0);
DieterGraef	0:d26c1b55cfca	1190	}
DieterGraef	0:d26c1b55cfca	1191	}
DieterGraef	0:d26c1b55cfca	1192	}
DieterGraef	0:d26c1b55cfca	1193	TCPIP_APIMSG_ACK(msg);
DieterGraef	0:d26c1b55cfca	1194	}
DieterGraef	0:d26c1b55cfca	1195
DieterGraef	0:d26c1b55cfca	1196	/**
DieterGraef	0:d26c1b55cfca	1197	* See if more data needs to be written from a previous call to netconn_write.
DieterGraef	0:d26c1b55cfca	1198	* Called initially from do_write. If the first call can't send all data
DieterGraef	0:d26c1b55cfca	1199	* (because of low memory or empty send-buffer), this function is called again
DieterGraef	0:d26c1b55cfca	1200	* from sent_tcp() or poll_tcp() to send more data. If all data is sent, the
DieterGraef	0:d26c1b55cfca	1201	* blocking application thread (waiting in netconn_write) is released.
DieterGraef	0:d26c1b55cfca	1202	*
DieterGraef	0:d26c1b55cfca	1203	* @param conn netconn (that is currently in state NETCONN_WRITE) to process
DieterGraef	0:d26c1b55cfca	1204	* @return ERR_OK
DieterGraef	0:d26c1b55cfca	1205	* ERR_MEM if LWIP_TCPIP_CORE_LOCKING=1 and sending hasn't yet finished
DieterGraef	0:d26c1b55cfca	1206	*/
DieterGraef	0:d26c1b55cfca	1207	static err_t
DieterGraef	0:d26c1b55cfca	1208	do_writemore(struct netconn *conn)
DieterGraef	0:d26c1b55cfca	1209	{
DieterGraef	0:d26c1b55cfca	1210	err_t err;
DieterGraef	0:d26c1b55cfca	1211	void *dataptr;
DieterGraef	0:d26c1b55cfca	1212	u16_t len, available;
DieterGraef	0:d26c1b55cfca	1213	u8_t write_finished = 0;
DieterGraef	0:d26c1b55cfca	1214	size_t diff;
DieterGraef	0:d26c1b55cfca	1215	u8_t dontblock = netconn_is_nonblocking(conn) \|\|
DieterGraef	0:d26c1b55cfca	1216	(conn->current_msg->msg.w.apiflags & NETCONN_DONTBLOCK);
DieterGraef	0:d26c1b55cfca	1217	u8_t apiflags = conn->current_msg->msg.w.apiflags;
DieterGraef	0:d26c1b55cfca	1218
DieterGraef	0:d26c1b55cfca	1219	LWIP_ASSERT("conn != NULL", conn != NULL);
DieterGraef	0:d26c1b55cfca	1220	LWIP_ASSERT("conn->state == NETCONN_WRITE", (conn->state == NETCONN_WRITE));
DieterGraef	0:d26c1b55cfca	1221	LWIP_ASSERT("conn->current_msg != NULL", conn->current_msg != NULL);
DieterGraef	0:d26c1b55cfca	1222	LWIP_ASSERT("conn->pcb.tcp != NULL", conn->pcb.tcp != NULL);
DieterGraef	0:d26c1b55cfca	1223	LWIP_ASSERT("conn->write_offset < conn->current_msg->msg.w.len",
DieterGraef	0:d26c1b55cfca	1224	conn->write_offset < conn->current_msg->msg.w.len);
DieterGraef	0:d26c1b55cfca	1225
DieterGraef	0:d26c1b55cfca	1226	#if LWIP_SO_SNDTIMEO
DieterGraef	0:d26c1b55cfca	1227	if ((conn->send_timeout != 0) &&
DieterGraef	0:d26c1b55cfca	1228	((s32_t)(sys_now() - conn->current_msg->msg.w.time_started) >= conn->send_timeout)) {
DieterGraef	0:d26c1b55cfca	1229	write_finished = 1;
DieterGraef	0:d26c1b55cfca	1230	if (conn->write_offset == 0) {
DieterGraef	0:d26c1b55cfca	1231	/* nothing has been written */
DieterGraef	0:d26c1b55cfca	1232	err = ERR_WOULDBLOCK;
DieterGraef	0:d26c1b55cfca	1233	conn->current_msg->msg.w.len = 0;
DieterGraef	0:d26c1b55cfca	1234	} else {
DieterGraef	0:d26c1b55cfca	1235	/* partial write */
DieterGraef	0:d26c1b55cfca	1236	err = ERR_OK;
DieterGraef	0:d26c1b55cfca	1237	conn->current_msg->msg.w.len = conn->write_offset;
DieterGraef	0:d26c1b55cfca	1238	}
DieterGraef	0:d26c1b55cfca	1239	} else
DieterGraef	0:d26c1b55cfca	1240	#endif /* LWIP_SO_SNDTIMEO */
DieterGraef	0:d26c1b55cfca	1241	{
DieterGraef	0:d26c1b55cfca	1242	dataptr = (u8_t*)conn->current_msg->msg.w.dataptr + conn->write_offset;
DieterGraef	0:d26c1b55cfca	1243	diff = conn->current_msg->msg.w.len - conn->write_offset;
DieterGraef	0:d26c1b55cfca	1244	if (diff > 0xffffUL) { /* max_u16_t */
DieterGraef	0:d26c1b55cfca	1245	len = 0xffff;
DieterGraef	0:d26c1b55cfca	1246	#if LWIP_TCPIP_CORE_LOCKING
DieterGraef	0:d26c1b55cfca	1247	conn->flags \|= NETCONN_FLAG_WRITE_DELAYED;
DieterGraef	0:d26c1b55cfca	1248	#endif
DieterGraef	0:d26c1b55cfca	1249	apiflags \|= TCP_WRITE_FLAG_MORE;
DieterGraef	0:d26c1b55cfca	1250	} else {
DieterGraef	0:d26c1b55cfca	1251	len = (u16_t)diff;
DieterGraef	0:d26c1b55cfca	1252	}
DieterGraef	0:d26c1b55cfca	1253	available = tcp_sndbuf(conn->pcb.tcp);
DieterGraef	0:d26c1b55cfca	1254	if (available < len) {
DieterGraef	0:d26c1b55cfca	1255	/* don't try to write more than sendbuf */
DieterGraef	0:d26c1b55cfca	1256	len = available;
DieterGraef	0:d26c1b55cfca	1257	if (dontblock){
DieterGraef	0:d26c1b55cfca	1258	if (!len) {
DieterGraef	0:d26c1b55cfca	1259	err = ERR_WOULDBLOCK;
DieterGraef	0:d26c1b55cfca	1260	goto err_mem;
DieterGraef	0:d26c1b55cfca	1261	}
DieterGraef	0:d26c1b55cfca	1262	} else {
DieterGraef	0:d26c1b55cfca	1263	#if LWIP_TCPIP_CORE_LOCKING
DieterGraef	0:d26c1b55cfca	1264	conn->flags \|= NETCONN_FLAG_WRITE_DELAYED;
DieterGraef	0:d26c1b55cfca	1265	#endif
DieterGraef	0:d26c1b55cfca	1266	apiflags \|= TCP_WRITE_FLAG_MORE;
DieterGraef	0:d26c1b55cfca	1267	}
DieterGraef	0:d26c1b55cfca	1268	}
DieterGraef	0:d26c1b55cfca	1269	LWIP_ASSERT("do_writemore: invalid length!", ((conn->write_offset + len) <= conn->current_msg->msg.w.len));
DieterGraef	0:d26c1b55cfca	1270	err = tcp_write(conn->pcb.tcp, dataptr, len, apiflags);
DieterGraef	0:d26c1b55cfca	1271	/* if OK or memory error, check available space */
DieterGraef	0:d26c1b55cfca	1272	if ((err == ERR_OK) \|\| (err == ERR_MEM)) {
DieterGraef	0:d26c1b55cfca	1273	err_mem:
DieterGraef	0:d26c1b55cfca	1274	if (dontblock && (len < conn->current_msg->msg.w.len)) {
DieterGraef	0:d26c1b55cfca	1275	/* non-blocking write did not write everything: mark the pcb non-writable
DieterGraef	0:d26c1b55cfca	1276	and let poll_tcp check writable space to mark the pcb writable again */
DieterGraef	0:d26c1b55cfca	1277	API_EVENT(conn, NETCONN_EVT_SENDMINUS, len);
DieterGraef	0:d26c1b55cfca	1278	conn->flags \|= NETCONN_FLAG_CHECK_WRITESPACE;
DieterGraef	0:d26c1b55cfca	1279	} else if ((tcp_sndbuf(conn->pcb.tcp) <= TCP_SNDLOWAT) \|\|
DieterGraef	0:d26c1b55cfca	1280	(tcp_sndqueuelen(conn->pcb.tcp) >= TCP_SNDQUEUELOWAT)) {
DieterGraef	0:d26c1b55cfca	1281	/* The queued byte- or pbuf-count exceeds the configured low-water limit,
DieterGraef	0:d26c1b55cfca	1282	let select mark this pcb as non-writable. */
DieterGraef	0:d26c1b55cfca	1283	API_EVENT(conn, NETCONN_EVT_SENDMINUS, len);
DieterGraef	0:d26c1b55cfca	1284	}
DieterGraef	0:d26c1b55cfca	1285	}
DieterGraef	0:d26c1b55cfca	1286
DieterGraef	0:d26c1b55cfca	1287	if (err == ERR_OK) {
DieterGraef	0:d26c1b55cfca	1288	conn->write_offset += len;
DieterGraef	0:d26c1b55cfca	1289	if ((conn->write_offset == conn->current_msg->msg.w.len) \|\| dontblock) {
DieterGraef	0:d26c1b55cfca	1290	/* return sent length */
DieterGraef	0:d26c1b55cfca	1291	conn->current_msg->msg.w.len = conn->write_offset;
DieterGraef	0:d26c1b55cfca	1292	/* everything was written */
DieterGraef	0:d26c1b55cfca	1293	write_finished = 1;
DieterGraef	0:d26c1b55cfca	1294	conn->write_offset = 0;
DieterGraef	0:d26c1b55cfca	1295	}
DieterGraef	0:d26c1b55cfca	1296	tcp_output(conn->pcb.tcp);
DieterGraef	0:d26c1b55cfca	1297	} else if ((err == ERR_MEM) && !dontblock) {
DieterGraef	0:d26c1b55cfca	1298	/* If ERR_MEM, we wait for sent_tcp or poll_tcp to be called
DieterGraef	0:d26c1b55cfca	1299	we do NOT return to the application thread, since ERR_MEM is
DieterGraef	0:d26c1b55cfca	1300	only a temporary error! */
DieterGraef	0:d26c1b55cfca	1301
DieterGraef	0:d26c1b55cfca	1302	/* tcp_write returned ERR_MEM, try tcp_output anyway */
DieterGraef	0:d26c1b55cfca	1303	tcp_output(conn->pcb.tcp);
DieterGraef	0:d26c1b55cfca	1304
DieterGraef	0:d26c1b55cfca	1305	#if LWIP_TCPIP_CORE_LOCKING
DieterGraef	0:d26c1b55cfca	1306	conn->flags \|= NETCONN_FLAG_WRITE_DELAYED;
DieterGraef	0:d26c1b55cfca	1307	#endif
DieterGraef	0:d26c1b55cfca	1308	} else {
DieterGraef	0:d26c1b55cfca	1309	/* On errors != ERR_MEM, we don't try writing any more but return
DieterGraef	0:d26c1b55cfca	1310	the error to the application thread. */
DieterGraef	0:d26c1b55cfca	1311	write_finished = 1;
DieterGraef	0:d26c1b55cfca	1312	conn->current_msg->msg.w.len = 0;
DieterGraef	0:d26c1b55cfca	1313	}
DieterGraef	0:d26c1b55cfca	1314	}
DieterGraef	0:d26c1b55cfca	1315	if (write_finished) {
DieterGraef	0:d26c1b55cfca	1316	/* everything was written: set back connection state
DieterGraef	0:d26c1b55cfca	1317	and back to application task */
DieterGraef	0:d26c1b55cfca	1318	conn->current_msg->err = err;
DieterGraef	0:d26c1b55cfca	1319	conn->current_msg = NULL;
DieterGraef	0:d26c1b55cfca	1320	conn->state = NETCONN_NONE;
DieterGraef	0:d26c1b55cfca	1321	#if LWIP_TCPIP_CORE_LOCKING
DieterGraef	0:d26c1b55cfca	1322	if ((conn->flags & NETCONN_FLAG_WRITE_DELAYED) != 0)
DieterGraef	0:d26c1b55cfca	1323	#endif
DieterGraef	0:d26c1b55cfca	1324	{
DieterGraef	0:d26c1b55cfca	1325	sys_sem_signal(&conn->op_completed);
DieterGraef	0:d26c1b55cfca	1326	}
DieterGraef	0:d26c1b55cfca	1327	}
DieterGraef	0:d26c1b55cfca	1328	#if LWIP_TCPIP_CORE_LOCKING
DieterGraef	0:d26c1b55cfca	1329	else
DieterGraef	0:d26c1b55cfca	1330	return ERR_MEM;
DieterGraef	0:d26c1b55cfca	1331	#endif
DieterGraef	0:d26c1b55cfca	1332	return ERR_OK;
DieterGraef	0:d26c1b55cfca	1333	}
DieterGraef	0:d26c1b55cfca	1334	#endif /* LWIP_TCP */
DieterGraef	0:d26c1b55cfca	1335
DieterGraef	0:d26c1b55cfca	1336	/**
DieterGraef	0:d26c1b55cfca	1337	* Send some data on a TCP pcb contained in a netconn
DieterGraef	0:d26c1b55cfca	1338	* Called from netconn_write
DieterGraef	0:d26c1b55cfca	1339	*
DieterGraef	0:d26c1b55cfca	1340	* @param msg the api_msg_msg pointing to the connection
DieterGraef	0:d26c1b55cfca	1341	*/
DieterGraef	0:d26c1b55cfca	1342	void
DieterGraef	0:d26c1b55cfca	1343	do_write(struct api_msg_msg *msg)
DieterGraef	0:d26c1b55cfca	1344	{
DieterGraef	0:d26c1b55cfca	1345	if (ERR_IS_FATAL(msg->conn->last_err)) {
DieterGraef	0:d26c1b55cfca	1346	msg->err = msg->conn->last_err;
DieterGraef	0:d26c1b55cfca	1347	} else {
DieterGraef	0:d26c1b55cfca	1348	if (msg->conn->type == NETCONN_TCP) {
DieterGraef	0:d26c1b55cfca	1349	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	1350	if (msg->conn->state != NETCONN_NONE) {
DieterGraef	0:d26c1b55cfca	1351	/* netconn is connecting, closing or in blocking write */
DieterGraef	0:d26c1b55cfca	1352	msg->err = ERR_INPROGRESS;
DieterGraef	0:d26c1b55cfca	1353	} else if (msg->conn->pcb.tcp != NULL) {
DieterGraef	0:d26c1b55cfca	1354	msg->conn->state = NETCONN_WRITE;
DieterGraef	0:d26c1b55cfca	1355	/* set all the variables used by do_writemore */
DieterGraef	0:d26c1b55cfca	1356	LWIP_ASSERT("already writing or closing", msg->conn->current_msg == NULL &&
DieterGraef	0:d26c1b55cfca	1357	msg->conn->write_offset == 0);
DieterGraef	0:d26c1b55cfca	1358	LWIP_ASSERT("msg->msg.w.len != 0", msg->msg.w.len != 0);
DieterGraef	0:d26c1b55cfca	1359	msg->conn->current_msg = msg;
DieterGraef	0:d26c1b55cfca	1360	msg->conn->write_offset = 0;
DieterGraef	0:d26c1b55cfca	1361	#if LWIP_TCPIP_CORE_LOCKING
DieterGraef	0:d26c1b55cfca	1362	msg->conn->flags &= ~NETCONN_FLAG_WRITE_DELAYED;
DieterGraef	0:d26c1b55cfca	1363	if (do_writemore(msg->conn) != ERR_OK) {
DieterGraef	0:d26c1b55cfca	1364	LWIP_ASSERT("state!", msg->conn->state == NETCONN_WRITE);
DieterGraef	0:d26c1b55cfca	1365	UNLOCK_TCPIP_CORE();
DieterGraef	0:d26c1b55cfca	1366	sys_arch_sem_wait(&msg->conn->op_completed, 0);
DieterGraef	0:d26c1b55cfca	1367	LOCK_TCPIP_CORE();
DieterGraef	0:d26c1b55cfca	1368	LWIP_ASSERT("state!", msg->conn->state == NETCONN_NONE);
DieterGraef	0:d26c1b55cfca	1369	}
DieterGraef	0:d26c1b55cfca	1370	#else /* LWIP_TCPIP_CORE_LOCKING */
DieterGraef	0:d26c1b55cfca	1371	do_writemore(msg->conn);
DieterGraef	0:d26c1b55cfca	1372	#endif /* LWIP_TCPIP_CORE_LOCKING */
DieterGraef	0:d26c1b55cfca	1373	/* for both cases: if do_writemore was called, don't ACK the APIMSG
DieterGraef	0:d26c1b55cfca	1374	since do_writemore ACKs it! */
DieterGraef	0:d26c1b55cfca	1375	return;
DieterGraef	0:d26c1b55cfca	1376	} else {
DieterGraef	0:d26c1b55cfca	1377	msg->err = ERR_CONN;
DieterGraef	0:d26c1b55cfca	1378	}
DieterGraef	0:d26c1b55cfca	1379	#else /* LWIP_TCP */
DieterGraef	0:d26c1b55cfca	1380	msg->err = ERR_VAL;
DieterGraef	0:d26c1b55cfca	1381	#endif /* LWIP_TCP */
DieterGraef	0:d26c1b55cfca	1382	#if (LWIP_UDP \|\| LWIP_RAW)
DieterGraef	0:d26c1b55cfca	1383	} else {
DieterGraef	0:d26c1b55cfca	1384	msg->err = ERR_VAL;
DieterGraef	0:d26c1b55cfca	1385	#endif /* (LWIP_UDP \|\| LWIP_RAW) */
DieterGraef	0:d26c1b55cfca	1386	}
DieterGraef	0:d26c1b55cfca	1387	}
DieterGraef	0:d26c1b55cfca	1388	TCPIP_APIMSG_ACK(msg);
DieterGraef	0:d26c1b55cfca	1389	}
DieterGraef	0:d26c1b55cfca	1390
DieterGraef	0:d26c1b55cfca	1391	/**
DieterGraef	0:d26c1b55cfca	1392	* Return a connection's local or remote address
DieterGraef	0:d26c1b55cfca	1393	* Called from netconn_getaddr
DieterGraef	0:d26c1b55cfca	1394	*
DieterGraef	0:d26c1b55cfca	1395	* @param msg the api_msg_msg pointing to the connection
DieterGraef	0:d26c1b55cfca	1396	*/
DieterGraef	0:d26c1b55cfca	1397	void
DieterGraef	0:d26c1b55cfca	1398	do_getaddr(struct api_msg_msg *msg)
DieterGraef	0:d26c1b55cfca	1399	{
DieterGraef	0:d26c1b55cfca	1400	if (msg->conn->pcb.ip != NULL) {
DieterGraef	0:d26c1b55cfca	1401	*(msg->msg.ad.ipaddr) = (msg->msg.ad.local ? msg->conn->pcb.ip->local_ip :
DieterGraef	0:d26c1b55cfca	1402	msg->conn->pcb.ip->remote_ip);
DieterGraef	0:d26c1b55cfca	1403
DieterGraef	0:d26c1b55cfca	1404	msg->err = ERR_OK;
DieterGraef	0:d26c1b55cfca	1405	switch (NETCONNTYPE_GROUP(msg->conn->type)) {
DieterGraef	0:d26c1b55cfca	1406	#if LWIP_RAW
DieterGraef	0:d26c1b55cfca	1407	case NETCONN_RAW:
DieterGraef	0:d26c1b55cfca	1408	if (msg->msg.ad.local) {
DieterGraef	0:d26c1b55cfca	1409	*(msg->msg.ad.port) = msg->conn->pcb.raw->protocol;
DieterGraef	0:d26c1b55cfca	1410	} else {
DieterGraef	0:d26c1b55cfca	1411	/* return an error as connecting is only a helper for upper layers */
DieterGraef	0:d26c1b55cfca	1412	msg->err = ERR_CONN;
DieterGraef	0:d26c1b55cfca	1413	}
DieterGraef	0:d26c1b55cfca	1414	break;
DieterGraef	0:d26c1b55cfca	1415	#endif /* LWIP_RAW */
DieterGraef	0:d26c1b55cfca	1416	#if LWIP_UDP
DieterGraef	0:d26c1b55cfca	1417	case NETCONN_UDP:
DieterGraef	0:d26c1b55cfca	1418	if (msg->msg.ad.local) {
DieterGraef	0:d26c1b55cfca	1419	*(msg->msg.ad.port) = msg->conn->pcb.udp->local_port;
DieterGraef	0:d26c1b55cfca	1420	} else {
DieterGraef	0:d26c1b55cfca	1421	if ((msg->conn->pcb.udp->flags & UDP_FLAGS_CONNECTED) == 0) {
DieterGraef	0:d26c1b55cfca	1422	msg->err = ERR_CONN;
DieterGraef	0:d26c1b55cfca	1423	} else {
DieterGraef	0:d26c1b55cfca	1424	*(msg->msg.ad.port) = msg->conn->pcb.udp->remote_port;
DieterGraef	0:d26c1b55cfca	1425	}
DieterGraef	0:d26c1b55cfca	1426	}
DieterGraef	0:d26c1b55cfca	1427	break;
DieterGraef	0:d26c1b55cfca	1428	#endif /* LWIP_UDP */
DieterGraef	0:d26c1b55cfca	1429	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	1430	case NETCONN_TCP:
DieterGraef	0:d26c1b55cfca	1431	*(msg->msg.ad.port) = (msg->msg.ad.local?msg->conn->pcb.tcp->local_port:msg->conn->pcb.tcp->remote_port);
DieterGraef	0:d26c1b55cfca	1432	break;
DieterGraef	0:d26c1b55cfca	1433	#endif /* LWIP_TCP */
DieterGraef	0:d26c1b55cfca	1434	default:
DieterGraef	0:d26c1b55cfca	1435	LWIP_ASSERT("invalid netconn_type", 0);
DieterGraef	0:d26c1b55cfca	1436	break;
DieterGraef	0:d26c1b55cfca	1437	}
DieterGraef	0:d26c1b55cfca	1438	} else {
DieterGraef	0:d26c1b55cfca	1439	msg->err = ERR_CONN;
DieterGraef	0:d26c1b55cfca	1440	}
DieterGraef	0:d26c1b55cfca	1441	TCPIP_APIMSG_ACK(msg);
DieterGraef	0:d26c1b55cfca	1442	}
DieterGraef	0:d26c1b55cfca	1443
DieterGraef	0:d26c1b55cfca	1444	/**
DieterGraef	0:d26c1b55cfca	1445	* Close a TCP pcb contained in a netconn
DieterGraef	0:d26c1b55cfca	1446	* Called from netconn_close
DieterGraef	0:d26c1b55cfca	1447	*
DieterGraef	0:d26c1b55cfca	1448	* @param msg the api_msg_msg pointing to the connection
DieterGraef	0:d26c1b55cfca	1449	*/
DieterGraef	0:d26c1b55cfca	1450	void
DieterGraef	0:d26c1b55cfca	1451	do_close(struct api_msg_msg *msg)
DieterGraef	0:d26c1b55cfca	1452	{
DieterGraef	0:d26c1b55cfca	1453	#if LWIP_TCP
DieterGraef	0:d26c1b55cfca	1454	/* @todo: abort running write/connect? */
DieterGraef	0:d26c1b55cfca	1455	if ((msg->conn->state != NETCONN_NONE) && (msg->conn->state != NETCONN_LISTEN)) {
DieterGraef	0:d26c1b55cfca	1456	/* this only happens for TCP netconns */
DieterGraef	0:d26c1b55cfca	1457	LWIP_ASSERT("msg->conn->type == NETCONN_TCP", msg->conn->type == NETCONN_TCP);
DieterGraef	0:d26c1b55cfca	1458	msg->err = ERR_INPROGRESS;
DieterGraef	0:d26c1b55cfca	1459	} else if ((msg->conn->pcb.tcp != NULL) && (msg->conn->type == NETCONN_TCP)) {
DieterGraef	0:d26c1b55cfca	1460	if ((msg->msg.sd.shut != NETCONN_SHUT_RDWR) && (msg->conn->state == NETCONN_LISTEN)) {
DieterGraef	0:d26c1b55cfca	1461	/* LISTEN doesn't support half shutdown */
DieterGraef	0:d26c1b55cfca	1462	msg->err = ERR_CONN;
DieterGraef	0:d26c1b55cfca	1463	} else {
DieterGraef	0:d26c1b55cfca	1464	if (msg->msg.sd.shut & NETCONN_SHUT_RD) {
DieterGraef	0:d26c1b55cfca	1465	/* Drain and delete mboxes */
DieterGraef	0:d26c1b55cfca	1466	netconn_drain(msg->conn);
DieterGraef	0:d26c1b55cfca	1467	}
DieterGraef	0:d26c1b55cfca	1468	LWIP_ASSERT("already writing or closing", msg->conn->current_msg == NULL &&
DieterGraef	0:d26c1b55cfca	1469	msg->conn->write_offset == 0);
DieterGraef	0:d26c1b55cfca	1470	msg->conn->state = NETCONN_CLOSE;
DieterGraef	0:d26c1b55cfca	1471	msg->conn->current_msg = msg;
DieterGraef	0:d26c1b55cfca	1472	do_close_internal(msg->conn);
DieterGraef	0:d26c1b55cfca	1473	/* for tcp netconns, do_close_internal ACKs the message */
DieterGraef	0:d26c1b55cfca	1474	return;
DieterGraef	0:d26c1b55cfca	1475	}
DieterGraef	0:d26c1b55cfca	1476	} else
DieterGraef	0:d26c1b55cfca	1477	#endif /* LWIP_TCP */
DieterGraef	0:d26c1b55cfca	1478	{
DieterGraef	0:d26c1b55cfca	1479	msg->err = ERR_VAL;
DieterGraef	0:d26c1b55cfca	1480	}
DieterGraef	0:d26c1b55cfca	1481	sys_sem_signal(&msg->conn->op_completed);
DieterGraef	0:d26c1b55cfca	1482	}
DieterGraef	0:d26c1b55cfca	1483
DieterGraef	0:d26c1b55cfca	1484	#if LWIP_IGMP
DieterGraef	0:d26c1b55cfca	1485	/**
DieterGraef	0:d26c1b55cfca	1486	* Join multicast groups for UDP netconns.
DieterGraef	0:d26c1b55cfca	1487	* Called from netconn_join_leave_group
DieterGraef	0:d26c1b55cfca	1488	*
DieterGraef	0:d26c1b55cfca	1489	* @param msg the api_msg_msg pointing to the connection
DieterGraef	0:d26c1b55cfca	1490	*/
DieterGraef	0:d26c1b55cfca	1491	void
DieterGraef	0:d26c1b55cfca	1492	do_join_leave_group(struct api_msg_msg *msg)
DieterGraef	0:d26c1b55cfca	1493	{
DieterGraef	0:d26c1b55cfca	1494	if (ERR_IS_FATAL(msg->conn->last_err)) {
DieterGraef	0:d26c1b55cfca	1495	msg->err = msg->conn->last_err;
DieterGraef	0:d26c1b55cfca	1496	} else {
DieterGraef	0:d26c1b55cfca	1497	if (msg->conn->pcb.tcp != NULL) {
DieterGraef	0:d26c1b55cfca	1498	if (NETCONNTYPE_GROUP(msg->conn->type) == NETCONN_UDP) {
DieterGraef	0:d26c1b55cfca	1499	#if LWIP_UDP
DieterGraef	0:d26c1b55cfca	1500	if (msg->msg.jl.join_or_leave == NETCONN_JOIN) {
DieterGraef	0:d26c1b55cfca	1501	msg->err = igmp_joingroup(msg->msg.jl.netif_addr, msg->msg.jl.multiaddr);
DieterGraef	0:d26c1b55cfca	1502	} else {
DieterGraef	0:d26c1b55cfca	1503	msg->err = igmp_leavegroup(msg->msg.jl.netif_addr, msg->msg.jl.multiaddr);
DieterGraef	0:d26c1b55cfca	1504	}
DieterGraef	0:d26c1b55cfca	1505	#endif /* LWIP_UDP */
DieterGraef	0:d26c1b55cfca	1506	#if (LWIP_TCP \|\| LWIP_RAW)
DieterGraef	0:d26c1b55cfca	1507	} else {
DieterGraef	0:d26c1b55cfca	1508	msg->err = ERR_VAL;
DieterGraef	0:d26c1b55cfca	1509	#endif /* (LWIP_TCP \|\| LWIP_RAW) */
DieterGraef	0:d26c1b55cfca	1510	}
DieterGraef	0:d26c1b55cfca	1511	} else {
DieterGraef	0:d26c1b55cfca	1512	msg->err = ERR_CONN;
DieterGraef	0:d26c1b55cfca	1513	}
DieterGraef	0:d26c1b55cfca	1514	}
DieterGraef	0:d26c1b55cfca	1515	TCPIP_APIMSG_ACK(msg);
DieterGraef	0:d26c1b55cfca	1516	}
DieterGraef	0:d26c1b55cfca	1517	#endif /* LWIP_IGMP */
DieterGraef	0:d26c1b55cfca	1518
DieterGraef	0:d26c1b55cfca	1519	#if LWIP_DNS
DieterGraef	0:d26c1b55cfca	1520	/**
DieterGraef	0:d26c1b55cfca	1521	* Callback function that is called when DNS name is resolved
DieterGraef	0:d26c1b55cfca	1522	* (or on timeout). A waiting application thread is waked up by
DieterGraef	0:d26c1b55cfca	1523	* signaling the semaphore.
DieterGraef	0:d26c1b55cfca	1524	*/
DieterGraef	0:d26c1b55cfca	1525	static void
DieterGraef	0:d26c1b55cfca	1526	do_dns_found(const char name, ip_addr_t ipaddr, void *arg)
DieterGraef	0:d26c1b55cfca	1527	{
DieterGraef	0:d26c1b55cfca	1528	struct dns_api_msg msg = (struct dns_api_msg)arg;
DieterGraef	0:d26c1b55cfca	1529
DieterGraef	0:d26c1b55cfca	1530	LWIP_ASSERT("DNS response for wrong host name", strcmp(msg->name, name) == 0);
DieterGraef	0:d26c1b55cfca	1531	LWIP_UNUSED_ARG(name);
DieterGraef	0:d26c1b55cfca	1532
DieterGraef	0:d26c1b55cfca	1533	if (ipaddr == NULL) {
DieterGraef	0:d26c1b55cfca	1534	/* timeout or memory error */
DieterGraef	0:d26c1b55cfca	1535	*msg->err = ERR_VAL;
DieterGraef	0:d26c1b55cfca	1536	} else {
DieterGraef	0:d26c1b55cfca	1537	/* address was resolved */
DieterGraef	0:d26c1b55cfca	1538	*msg->err = ERR_OK;
DieterGraef	0:d26c1b55cfca	1539	msg->addr = ipaddr;
DieterGraef	0:d26c1b55cfca	1540	}
DieterGraef	0:d26c1b55cfca	1541	/* wake up the application task waiting in netconn_gethostbyname */
DieterGraef	0:d26c1b55cfca	1542	sys_sem_signal(msg->sem);
DieterGraef	0:d26c1b55cfca	1543
DieterGraef	0:d26c1b55cfca	1544	}
DieterGraef	0:d26c1b55cfca	1545
DieterGraef	0:d26c1b55cfca	1546	/**
DieterGraef	0:d26c1b55cfca	1547	* Execute a DNS query
DieterGraef	0:d26c1b55cfca	1548	* Called from netconn_gethostbyname
DieterGraef	0:d26c1b55cfca	1549	*
DieterGraef	0:d26c1b55cfca	1550	* @param arg the dns_api_msg pointing to the query
DieterGraef	0:d26c1b55cfca	1551	*/
DieterGraef	0:d26c1b55cfca	1552	void
DieterGraef	0:d26c1b55cfca	1553	do_gethostbyname(void *arg)
DieterGraef	0:d26c1b55cfca	1554	{
DieterGraef	0:d26c1b55cfca	1555	struct dns_api_msg msg = (struct dns_api_msg)arg;
DieterGraef	0:d26c1b55cfca	1556
DieterGraef	0:d26c1b55cfca	1557	*msg->err = dns_gethostbyname(msg->name, msg->addr, do_dns_found, msg);
DieterGraef	0:d26c1b55cfca	1558	if (*msg->err != ERR_INPROGRESS) {
DieterGraef	0:d26c1b55cfca	1559	/* on error or immediate success, wake up the application
DieterGraef	0:d26c1b55cfca	1560	* task waiting in netconn_gethostbyname */
DieterGraef	0:d26c1b55cfca	1561	sys_sem_signal(msg->sem);
DieterGraef	0:d26c1b55cfca	1562	}
DieterGraef	0:d26c1b55cfca	1563	}
DieterGraef	0:d26c1b55cfca	1564	#endif /* LWIP_DNS */
DieterGraef	0:d26c1b55cfca	1565
DieterGraef	0:d26c1b55cfca	1566	#endif /* LWIP_NETCONN */

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Type:	Library
Created:	19 Jun 2016
Imports:	517
Forks:	4
Commits:	2
Dependents:	21
Dependencies:	0
Followers:	25

lwip/api/api_msg.c@1:28ba13dd96f7, 2016-06-23 (annotated)

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