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2023-05-26 67f9b2e17e1fd66927bbed3667503065c9129c41

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a7db3c	1	//*****************************************************************************
Q	2	//
	3	//! \file socket.c
	4	//! \brief SOCKET APIs Implements file.
	5	//! \details SOCKET APIs like as Berkeley Socket APIs.
	6	//! \version 1.0.3
	7	//! \date 2013/10/21
	8	//! \par Revision history
	9	//! <2014/05/01> V1.0.3. Refer to M20140501
	10	//! 1. Implicit type casting -> Explicit type casting.
	11	//! 2. replace 0x01 with PACK_REMAINED in recvfrom()
	12	//! 3. Validation a destination ip in connect() & sendto():
	13	//! It occurs a fatal error on converting unint32 address if uint8* addr parameter is not aligned by 4byte address.
	14	//! Copy 4 byte addr value into temporary uint32 variable and then compares it.
	15	//! <2013/12/20> V1.0.2 Refer to M20131220
	16	//! Remove Warning.
	17	//! <2013/11/04> V1.0.1 2nd Release. Refer to "20131104".
	18	//! In sendto(), Add to clear timeout interrupt status (Sn_IR_TIMEOUT)
	19	//! <2013/10/21> 1st Release
	20	//! \author MidnightCow
	21	//! \copyright
	22	//!
	23	//! Copyright (c) 2013, WIZnet Co., LTD.
	24	//! All rights reserved.
	25	//!
	26	//! Redistribution and use in source and binary forms, with or without
	27	//! modification, are permitted provided that the following conditions
	28	//! are met:
	29	//!
	30	//! * Redistributions of source code must retain the above copyright
	31	//! notice, this list of conditions and the following disclaimer.
	32	//! * Redistributions in binary form must reproduce the above copyright
	33	//! notice, this list of conditions and the following disclaimer in the
	34	//! documentation and/or other materials provided with the distribution.
	35	//! * Neither the name of the <ORGANIZATION> nor the names of its
	36	//! contributors may be used to endorse or promote products derived
	37	//! from this software without specific prior written permission.
	38	//!
	39	//! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	40	//! AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	41	//! IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	42	//! ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
	43	//! LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	44	//! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	45	//! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	46	//! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	47	//! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	48	//! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
	49	//! THE POSSIBILITY OF SUCH DAMAGE.
	50	//
	51	//*****************************************************************************
	52	#include "socket.h"
	53
	54	#define SOCK_ANY_PORT_NUM 0xC000;
	55
	56	static uint16_t sock_any_port = SOCK_ANY_PORT_NUM;
	57	static uint16_t sock_io_mode = 0;
	58	static uint16_t sock_is_sending = 0;
	59	static uint16_t sock_remained_size[_WIZCHIP_SOCK_NUM_] = {0,0,};
	60	static uint8_t sock_pack_info[_WIZCHIP_SOCK_NUM_] = {0,};
	61
	62	#if _WIZCHIP_ == 5200
	63	static uint16_t sock_next_rd[_WIZCHIP_SOCK_NUM_] ={0,};
	64	#endif
	65
	66	#define CHECK_SOCKNUM() \
	67	do{ \
	68	if(sn > _WIZCHIP_SOCK_NUM_) return SOCKERR_SOCKNUM; \
	69	}while(0); \
	70
	71	#define CHECK_SOCKMODE(mode) \
	72	do{ \
	73	if((getSn_MR(sn) & 0x0F) != mode) return SOCKERR_SOCKMODE; \
	74	}while(0); \
	75
	76	#define CHECK_SOCKINIT() \
	77	do{ \
	78	if((getSn_SR(sn) != SOCK_INIT)) return SOCKERR_SOCKINIT; \
	79	}while(0); \
	80
	81	#define CHECK_SOCKDATA() \
	82	do{ \
	83	if(len == 0) return SOCKERR_DATALEN; \
	84	}while(0); \
	85
	86
	87
	88	int8_t socket(uint8_t sn, uint8_t protocol, uint16_t port, uint8_t flag)
	89	{
	90	CHECK_SOCKNUM();
	91	switch(protocol)
	92	{
	93	case Sn_MR_TCP :
	94	case Sn_MR_UDP :
	95	case Sn_MR_MACRAW :
	96	break;
	97	#if ( _WIZCHIP_ < 5200 )
	98	case Sn_MR_IPRAW :
	99	case Sn_MR_PPPoE :
	100	break;
	101	#endif
	102	default :
	103	return SOCKERR_SOCKMODE;
	104	}
	105	if((flag & 0x06) != 0) return SOCKERR_SOCKFLAG;
	106	#if _WIZCHIP_ == 5200
	107	if(flag & 0x10) return SOCKERR_SOCKFLAG;
	108	#endif
	109
	110	if(flag != 0)
	111	{
	112	switch(protocol)
	113	{
	114	case Sn_MR_TCP:
	115	if((flag & (SF_TCP_NODELAY\|SF_IO_NONBLOCK))==0) return SOCKERR_SOCKFLAG;
	116	break;
	117	case Sn_MR_UDP:
	118	if(flag & SF_IGMP_VER2)
	119	{
	120	if((flag & SF_MULTI_ENABLE)==0) return SOCKERR_SOCKFLAG;
	121	}
	122	#if _WIZCHIP_ == 5500
	123	if(flag & SF_UNI_BLOCK)
	124	{
	125	if((flag & SF_MULTI_ENABLE) == 0) return SOCKERR_SOCKFLAG;
	126	}
	127	#endif
	128	break;
	129	default:
	130	break;
	131	}
	132	}
	133	close(sn);
	134	setSn_MR(sn, (protocol \| (flag & 0xF0)));
	135	if(!port)
	136	{
	137	port = sock_any_port++;
	138	if(sock_any_port == 0xFFF0) sock_any_port = SOCK_ANY_PORT_NUM;
	139	}
	140	setSn_PORT(sn,port);
	141	setSn_CR(sn,Sn_CR_OPEN);
	142	while(getSn_CR(sn));
	143	sock_io_mode \|= ((flag & SF_IO_NONBLOCK) << sn);
	144	sock_is_sending &= ~(1<<sn);
	145	sock_remained_size[sn] = 0;
	146	sock_pack_info[sn] = 0;
	147	while(getSn_SR(sn) == SOCK_CLOSED);
	148	return (int8_t)sn;
	149	}
	150
	151	int8_t close(uint8_t sn)
	152	{
	153	CHECK_SOCKNUM();
	154
	155	setSn_CR(sn,Sn_CR_CLOSE);
	156	/* wait to process the command... */
	157	while( getSn_CR(sn) );
	158	/* clear all interrupt of the socket. */
	159	setSn_IR(sn, 0xFF);
	160	sock_is_sending &= ~(1<<sn);
	161	sock_remained_size[sn] = 0;
	162	sock_pack_info[sn] = 0;
	163	while(getSn_SR(sn) != SOCK_CLOSED);
	164	return SOCK_OK;
	165	}
	166
	167	int8_t listen(uint8_t sn)
	168	{
	169	CHECK_SOCKNUM();
	170	CHECK_SOCKMODE(Sn_MR_TCP);
	171	CHECK_SOCKINIT();
	172	setSn_CR(sn,Sn_CR_LISTEN);
	173	while(getSn_CR(sn));
	174	while(getSn_SR(sn) != SOCK_LISTEN)
	175	{
	176	if(getSn_CR(sn) == SOCK_CLOSED)
	177	{
	178	close(sn);
	179	return SOCKERR_SOCKCLOSED;
	180	}
	181	}
	182	return SOCK_OK;
	183	}
	184
	185
	186	int8_t connect(uint8_t sn, uint8_t * addr, uint16_t port)
	187	{
	188	CHECK_SOCKNUM();
	189	CHECK_SOCKMODE(Sn_MR_TCP);
	190	CHECK_SOCKINIT();
	191	//M20140501 : For avoiding fatal error on memory align mismatched
	192	//if( ((uint32_t)addr) == 0xFFFFFFFF \|\| ((uint32_t)addr) == 0) return SOCKERR_IPINVALID;
	193	{
	194	uint32_t taddr;
	195	taddr = ((uint32_t)addr[0] & 0x000000FF);
	196	taddr = (taddr << 8) + ((uint32_t)addr[1] & 0x000000FF);
	197	taddr = (taddr << 8) + ((uint32_t)addr[2] & 0x000000FF);
	198	taddr = (taddr << 8) + ((uint32_t)addr[0] & 0x000000FF);
	199	if( taddr == 0xFFFFFFFF \|\| taddr == 0) return SOCKERR_IPINVALID;
	200	}
	201	//
	202
	203	if(port == 0) return SOCKERR_PORTZERO;
	204	setSn_DIPR(sn,addr);
	205	setSn_DPORT(sn,port);
	206	#if _WIZCHIP_ == 5200 // for W5200 ARP errata
	207	setSUBR(0);
	208	#endif
	209	setSn_CR(sn,Sn_CR_CONNECT);
	210	while(getSn_CR(sn));
	211	if(sock_io_mode & (1<<sn)) return SOCK_BUSY;
	212	while(getSn_SR(sn) != SOCK_ESTABLISHED)
	213	{
	214	if (getSn_IR(sn) & Sn_IR_TIMEOUT)
	215	{
	216	setSn_IR(sn, Sn_IR_TIMEOUT);
	217	#if _WIZCHIP_ == 5200 // for W5200 ARP errata
	218	setSUBR((uint8_t*)"\x00\x00\x00\x00");
	219	#endif
	220	return SOCKERR_TIMEOUT;
	221	}
	222	}
	223	#if _WIZCHIP_ == 5200 // for W5200 ARP errata
	224	setSUBR((uint8_t*)"\x00\x00\x00\x00");
	225	#endif
	226
	227	return SOCK_OK;
	228	}
	229
	230	int8_t disconnect(uint8_t sn)
	231	{
	232	CHECK_SOCKNUM();
	233	CHECK_SOCKMODE(Sn_MR_TCP);
	234	setSn_CR(sn,Sn_CR_DISCON);
	235	/* wait to process the command... */
	236	while(getSn_CR(sn));
	237	sock_is_sending &= ~(1<<sn);
	238	if(sock_io_mode & (1<<sn)) return SOCK_BUSY;
	239	while(getSn_SR(sn) != SOCK_CLOSED)
	240	{
	241	if(getSn_IR(sn) & Sn_IR_TIMEOUT)
	242	{
	243	close(sn);
	244	return SOCKERR_TIMEOUT;
	245	}
	246	}
	247	return SOCK_OK;
	248	}
	249
	250	int32_t send(uint8_t sn, uint8_t * buf, uint16_t len)
	251	{
	252	uint8_t tmp=0;
	253	uint16_t freesize=0;
	254
	255	CHECK_SOCKNUM();
	256	CHECK_SOCKMODE(Sn_MR_TCP);
	257	CHECK_SOCKDATA();
	258	tmp = getSn_SR(sn);
	259	if(tmp != SOCK_ESTABLISHED && tmp != SOCK_CLOSE_WAIT) return SOCKERR_SOCKSTATUS;
	260	if( sock_is_sending & (1<<sn) )
	261	{
	262	tmp = getSn_IR(sn);
	263	if(tmp & Sn_IR_SENDOK)
	264	{
	265	setSn_IR(sn, Sn_IR_SENDOK);
	266	#if _WZICHIP_ == 5200
	267	if(getSn_TX_RD(sn) != sock_next_rd[sn])
	268	{
	269	setSn_CR(sn,Sn_CR_SEND);
	270	while(getSn_CR(sn));
	271	return SOCKERR_BUSY;
	272	}
	273	#endif
	274	sock_is_sending &= ~(1<<sn);
	275	}
	276	else if(tmp & Sn_IR_TIMEOUT)
	277	{
	278	close(sn);
	279	return SOCKERR_TIMEOUT;
	280	}
	281	else return SOCK_BUSY;
	282	}
	283	freesize = getSn_TxMAX(sn);
	284	if (len > freesize) len = freesize; // check size not to exceed MAX size.
	285	while(1)
	286	{
	287	freesize = getSn_TX_FSR(sn);
	288	tmp = getSn_SR(sn);
	289	if ((tmp != SOCK_ESTABLISHED) && (tmp != SOCK_CLOSE_WAIT))
	290	{
	291	close(sn);
	292	return SOCKERR_SOCKSTATUS;
	293	}
	294	if( (sock_io_mode & (1<<sn)) && (len > freesize) ) return SOCK_BUSY;
	295	if(len <= freesize) break;
	296	}
	297	wiz_send_data(sn, buf, len);
	298	#if _WIZCHIP_ == 5200
	299	sock_next_rd[sn] = getSn_TX_RD(sn) + len;
	300	#endif
	301	setSn_CR(sn,Sn_CR_SEND);
	302	/* wait to process the command... */
	303	while(getSn_CR(sn));
	304	sock_is_sending \|= (1 << sn);
	305	return len;
	306	}
	307
	308
	309	int32_t recv(uint8_t sn, uint8_t * buf, uint16_t len)
	310	{
	311	uint8_t tmp = 0;
	312	uint16_t recvsize = 0;
	313	CHECK_SOCKNUM();
	314	CHECK_SOCKMODE(Sn_MR_TCP);
	315	CHECK_SOCKDATA();
	316
	317	recvsize = getSn_RxMAX(sn);
	318	if(recvsize < len) len = recvsize;
	319	while(1)
	320	{
	321	recvsize = getSn_RX_RSR(sn);
	322	tmp = getSn_SR(sn);
	323	if (tmp != SOCK_ESTABLISHED)
	324	{
	325	if(tmp == SOCK_CLOSE_WAIT)
	326	{
	327	if(recvsize != 0) break;
	328	else if(getSn_TX_FSR(sn) == getSn_TxMAX(sn))
	329	{
	330	close(sn);
	331	return SOCKERR_SOCKSTATUS;
	332	}
	333	}
	334	else
	335	{
	336	close(sn);
	337	return SOCKERR_SOCKSTATUS;
	338	}
	339	}
	340	if((sock_io_mode & (1<<sn)) && (recvsize == 0)) return SOCK_BUSY;
	341	if(recvsize != 0) break;
	342	};
	343	if(recvsize < len) len = recvsize;
	344	wiz_recv_data(sn, buf, len);
	345	setSn_CR(sn,Sn_CR_RECV);
	346	while(getSn_CR(sn));
	347	return len;
	348	}
	349
	350	int32_t sendto(uint8_t sn, uint8_t * buf, uint16_t len, uint8_t * addr, uint16_t port)
	351	{
	352	uint8_t tmp = 0;
	353	uint16_t freesize = 0;
	354	CHECK_SOCKNUM();
	355	switch(getSn_MR(sn) & 0x0F)
	356	{
	357	case Sn_MR_UDP:
	358	case Sn_MR_MACRAW:
	359	break;
	360	default:
	361	return SOCKERR_SOCKMODE;
	362	}
	363	CHECK_SOCKDATA();
	364	//M20140501 : For avoiding fatal error on memory align mismatched
	365	//if(((uint32_t)addr) == 0) return SOCKERR_IPINVALID;
	366	{
	367	uint32_t taddr;
	368	taddr = ((uint32_t)addr[0]) & 0x000000FF;
	369	taddr = (taddr << 8) + ((uint32_t)addr[1] & 0x000000FF);
	370	taddr = (taddr << 8) + ((uint32_t)addr[2] & 0x000000FF);
	371	taddr = (taddr << 8) + ((uint32_t)addr[3] & 0x000000FF);
	372	}
	373	//
	374	if(((uint32_t)addr) == 0) return SOCKERR_IPINVALID;
	375	if(port == 0) return SOCKERR_PORTZERO;
	376	tmp = getSn_SR(sn);
	377	if(tmp != SOCK_MACRAW && tmp != SOCK_UDP) return SOCKERR_SOCKSTATUS;
	378
	379	setSn_DIPR(sn,addr);
	380	setSn_DPORT(sn,port);
	381	freesize = getSn_TxMAX(sn);
	382	if (len > freesize) len = freesize; // check size not to exceed MAX size.
	383	while(1)
	384	{
	385	freesize = getSn_TX_FSR(sn);
	386	if(getSn_SR(sn) == SOCK_CLOSED) return SOCKERR_SOCKCLOSED;
	387	if( (sock_io_mode & (1<<sn)) && (len > freesize) ) return SOCK_BUSY;
	388	if(len <= freesize) break;
	389	};
	390	wiz_send_data(sn, buf, len);
	391
	392	#if _WIZCHIP_ == 5200 // for W5200 ARP errata
	393	setSUBR(0);
	394	#endif
	395
	396	setSn_CR(sn,Sn_CR_SEND);
	397	/* wait to process the command... */
	398	while(getSn_CR(sn));
	399	#if _WIZCHIP_ == 5200 // for W5200 ARP errata
	400	setSUBR((uint8_t*)"\x00\x00\x00\x00");
	401	#endif
	402	while(1)
	403	{
	404	tmp = getSn_IR(sn);
	405	if(tmp & Sn_IR_SENDOK)
	406	{
	407	setSn_IR(sn, Sn_IR_SENDOK);
	408	break;
	409	}
	410	//M:20131104
	411	//else if(tmp & Sn_IR_TIMEOUT) return SOCKERR_TIMEOUT;
	412	else if(tmp & Sn_IR_TIMEOUT)
	413	{
	414	setSn_IR(sn, Sn_IR_TIMEOUT);
	415	return SOCKERR_TIMEOUT;
	416	}
	417	////////////
	418	}
	419	return len;
	420	}
	421
	422
	423
	424	int32_t recvfrom(uint8_t sn, uint8_t * buf, uint16_t len, uint8_t * addr, uint16_t *port)
	425	{
	426	uint8_t mr;
	427	uint8_t head[8];
	428	uint16_t pack_len=0;
	429
	430	CHECK_SOCKNUM();
	431	//CHECK_SOCKMODE(Sn_MR_UDP);
	432	switch((mr=getSn_MR(sn)) & 0x0F)
	433	{
	434	case Sn_MR_UDP:
	435	case Sn_MR_MACRAW:
	436	break;
	437	#if ( _WIZCHIP_ < 5200 )
	438	case Sn_MR_IPRAW:
	439	case Sn_MR_PPPoE:
	440	break;
	441	#endif
	442	default:
	443	return SOCKERR_SOCKMODE;
	444	}
	445	CHECK_SOCKDATA();
	446	if(sock_remained_size[sn] == 0)
	447	{
	448	while(1)
	449	{
	450	pack_len = getSn_RX_RSR(sn);
	451	if(getSn_SR(sn) == SOCK_CLOSED) return SOCKERR_SOCKCLOSED;
	452	if( (sock_io_mode & (1<<sn)) && (pack_len == 0) ) return SOCK_BUSY;
	453	if(pack_len != 0) break;
	454	};
	455	}
	456	sock_pack_info[sn] = PACK_COMPLETED;
	457	switch (mr & 0x07)
	458	{
	459	case Sn_MR_UDP :
	460	if(sock_remained_size[sn] == 0)
	461	{
	462	wiz_recv_data(sn, head, 8);
	463	setSn_CR(sn,Sn_CR_RECV);
	464	while(getSn_CR(sn));
	465	// read peer's IP address, port number & packet length
	466	addr[0] = head[0];
	467	addr[1] = head[1];
	468	addr[2] = head[2];
	469	addr[3] = head[3];
	470	*port = head[4];
	471	port = (port << 8) + head[5];
	472	sock_remained_size[sn] = head[6];
	473	sock_remained_size[sn] = (sock_remained_size[sn] << 8) + head[7];
	474	sock_pack_info[sn] = PACK_FIRST;
	475	}
	476	if(len < sock_remained_size[sn]) pack_len = len;
	477	else pack_len = sock_remained_size[sn];
	478	//
	479	// Need to packet length check (default 1472)
	480	//
	481	wiz_recv_data(sn, buf, pack_len); // data copy.
	482	break;
	483	case Sn_MR_MACRAW :
	484	if(sock_remained_size[sn] == 0)
	485	{
	486	wiz_recv_data(sn, head, 2);
	487	setSn_CR(sn,Sn_CR_RECV);
	488	while(getSn_CR(sn));
	489	// read peer's IP address, port number & packet length
	490	sock_remained_size[sn] = head[0];
	491	sock_remained_size[sn] = (sock_remained_size[sn] <<8) + head[1];
	492	if(sock_remained_size[sn] > 1514)
	493	{
	494	close(sn);
	495	return SOCKFATAL_PACKLEN;
	496	}
	497	sock_pack_info[sn] = PACK_FIRST;
	498	}
	499	if(len < sock_remained_size[sn]) pack_len = len;
	500	else pack_len = sock_remained_size[sn];
	501	wiz_recv_data(sn,buf,pack_len);
	502	break;
	503	#if ( _WIZCHIP_ < 5200 )
	504	case Sn_MR_IPRAW:
	505	if(sock_remained_size[sn] == 0)
	506	{
	507	wiz_recv_data(sn, head, 6);
	508	setSn_CR(sn,Sn_CR_RECV);
	509	while(getSn_CR(sn));
	510	addr[0] = head[0];
	511	addr[1] = head[1];
	512	addr[2] = head[2];
	513	addr[3] = head[3];
	514	sock_remained_size[sn] = head[4];
	515	sock_remaiend_size[sn] = (sock_remained_size[sn] << 8) + head[5];
	516	sock_pack_info[sn] = PACK_FIRST;
	517	}
	518	//
	519	// Need to packet length check
	520	//
	521	if(len < sock_remained_size[sn]) pack_len = len;
	522	else pack_len = sock_remained_size[sn];
	523	wiz_recv_data(sn, buf, pack_len); // data copy.
	524	break;
	525	#endif
	526	default:
	527	wiz_recv_ignore(sn, pack_len); // data copy.
	528	sock_remained_size[sn] = pack_len;
	529	break;
	530	}
	531	setSn_CR(sn,Sn_CR_RECV);
	532	/* wait to process the command... */
	533	while(getSn_CR(sn)) ;
	534	sock_remained_size[sn] -= pack_len;
	535	//M20140501 : replace 0x01 with PACK_REMAINED
	536	//if(sock_remained_size[sn] != 0) sock_pack_info[sn] \|= 0x01;
	537	if(sock_remained_size[sn] != 0) sock_pack_info[sn] \|= PACK_REMAINED;
	538	//
	539	return pack_len;
	540	}
	541
	542
	543	int8_t ctlsocket(uint8_t sn, ctlsock_type cstype, void* arg)
	544	{
	545	uint8_t tmp = 0;
	546	CHECK_SOCKNUM();
	547	switch(cstype)
	548	{
	549	case CS_SET_IOMODE:
	550	tmp = ((uint8_t)arg);
	551	if(tmp == SOCK_IO_NONBLOCK) sock_io_mode \|= (1<<sn);
	552	else if(tmp == SOCK_IO_BLOCK) sock_io_mode &= ~(1<<sn);
	553	else return SOCKERR_ARG;
	554	break;
	555	case CS_GET_IOMODE:
	556	//M20140501 : implict type casting -> explict type casting
	557	//((uint8_t)arg) = (sock_io_mode >> sn) & 0x0001;
	558	((uint8_t)arg) = (uint8_t)((sock_io_mode >> sn) & 0x0001);
	559	//
	560	break;
	561	case CS_GET_MAXTXBUF:
	562	((uint16_t)arg) = getSn_TxMAX(sn);
	563	break;
	564	case CS_GET_MAXRXBUF:
	565	((uint16_t)arg) = getSn_RxMAX(sn);
	566	break;
	567	case CS_CLR_INTERRUPT:
	568	if( ((uint8_t)arg) > SIK_ALL) return SOCKERR_ARG;
	569	setSn_IR(sn,(uint8_t)arg);
	570	break;
	571	case CS_GET_INTERRUPT:
	572	((uint8_t)arg) = getSn_IR(sn);
	573	break;
	574	case CS_SET_INTMASK:
	575	if( ((uint8_t)arg) > SIK_ALL) return SOCKERR_ARG;
	576	setSn_IMR(sn,(uint8_t)arg);
	577	break;
	578	case CS_GET_INTMASK:
	579	((uint8_t)arg) = getSn_IMR(sn);
	580	default:
	581	return SOCKERR_ARG;
	582	}
	583	return SOCK_OK;
	584	}
	585
	586	int8_t setsockopt(uint8_t sn, sockopt_type sotype, void* arg)
	587	{
	588	// M20131220 : Remove warning
	589	//uint8_t tmp;
	590	CHECK_SOCKNUM();
	591	switch(sotype)
	592	{
	593	case SO_TTL:
	594	setSn_TTL(sn,(uint8_t)arg);
	595	break;
	596	case SO_TOS:
	597	setSn_TOS(sn,(uint8_t)arg);
	598	break;
	599	case SO_MSS:
	600	setSn_MSSR(sn,(uint16_t)arg);
	601	break;
	602	case SO_DESTIP:
	603	setSn_DIPR(sn, (uint8_t*)arg);
	604	break;
	605	case SO_DESTPORT:
	606	setSn_DPORT(sn, (uint16_t)arg);
	607	break;
	608	#if _WIZCHIP_ != 5100
	609	case SO_KEEPALIVESEND:
	610	CHECK_SOCKMODE(Sn_MR_TCP);
	611	#if _WIZCHIP_ > 5200
	612	if(getSn_KPALVTR(sn) != 0) return SOCKERR_SOCKOPT;
	613	#endif
	614	setSn_CR(sn,Sn_CR_SEND_KEEP);
	615	while(getSn_CR(sn) != 0)
	616	{
	617	// M20131220
	618	//if ((tmp = getSn_IR(sn)) & Sn_IR_TIMEOUT)
	619	if (getSn_IR(sn) & Sn_IR_TIMEOUT)
	620	{
	621	setSn_IR(sn, Sn_IR_TIMEOUT);
	622	return SOCKERR_TIMEOUT;
	623	}
	624	}
	625	break;
	626	#if _WIZCHIP_ > 5200
	627	case SO_KEEPALIVEAUTO:
	628	CHECK_SOCKMODE(Sn_MR_TCP);
	629	setSn_KPALVTR(sn,(uint8_t)arg);
	630	break;
	631	#endif
	632	#endif
	633	default:
	634	return SOCKERR_ARG;
	635	}
	636	return SOCK_OK;
	637	}
	638
	639	int8_t getsockopt(uint8_t sn, sockopt_type sotype, void* arg)
	640	{
	641	CHECK_SOCKNUM();
	642	switch(sotype)
	643	{
	644	case SO_FLAG:
	645	(uint8_t)arg = getSn_MR(sn) & 0xF0;
	646	break;
	647	case SO_TTL:
	648	(uint8_t) arg = getSn_TTL(sn);
	649	break;
	650	case SO_TOS:
	651	(uint8_t) arg = getSn_TOS(sn);
	652	break;
	653	case SO_MSS:
	654	(uint8_t) arg = getSn_MSSR(sn);
	655	case SO_DESTIP:
	656	getSn_DIPR(sn, (uint8_t*)arg);
	657	break;
	658	case SO_DESTPORT:
	659	(uint16_t) arg = getSn_DPORT(sn);
	660	break;
	661	#if _WIZCHIP_ > 5200
	662	case SO_KEEPALIVEAUTO:
	663	CHECK_SOCKMODE(Sn_MR_TCP);
	664	(uint16_t) arg = getSn_KPALVTR(sn);
	665	break;
	666	#endif
	667	case SO_SENDBUF:
	668	(uint16_t) arg = getSn_TX_FSR(sn);
	669	case SO_RECVBUF:
	670	(uint16_t) arg = getSn_RX_RSR(sn);
	671	case SO_STATUS:
	672	(uint8_t) arg = getSn_SR(sn);
	673	break;
	674	case SO_REMAINSIZE:
	675	if(getSn_MR(sn) == Sn_MR_TCP)
	676	(uint16_t)arg = getSn_RX_RSR(sn);
	677	else
	678	(uint16_t)arg = sock_remained_size[sn];
	679	break;
	680	case SO_PACKINFO:
	681	CHECK_SOCKMODE(Sn_MR_TCP);
	682	(uint8_t)arg = sock_pack_info[sn];
	683	break;
	684	default:
	685	return SOCKERR_SOCKOPT;
	686	}
	687	return SOCK_OK;
	688	}