[proto] Remove unsupported FSP protocol

The FSP protocol code came from legacy Etherboot and was never updated
to work as a gPXE protocol.  There has been no demand for this protocol,
so this patch removes it.

Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
Signed-off-by: Marty Connor <mdc@etherboot.org>

src/config/general.h

@@ -60,7 +60,6 @@ FILE_LICENCE ( GPL2_OR_LATER );
 #undef	DOWNLOAD_PROTO_FTP	/* File Transfer Protocol */
 #undef	DOWNLOAD_PROTO_TFTM	/* Multicast Trivial File Transfer Protocol */
 #undef	DOWNLOAD_PROTO_SLAM	/* Scalable Local Area Multicast */
-#undef	DOWNLOAD_PROTO_FSP	/* FSP? */
 
 /*
  * SAN boot protocols

src/proto/fsp.c

@@ -1,243 +0,0 @@
-    /*********************************************************************\
-    * Copyright (c) 2005 by Radim Kolar (hsn-sendmail.cz)                 *
-    *                                                                     *
-    * You may copy or modify this file in any manner you wish, provided   *
-    * that this notice is always included, and that you hold the author   *
-    * harmless for any loss or damage resulting from the installation or  *
-    * use of this software.                                               *
-    *                                                                     *
-    * This file provides support for FSP v2 protocol written from scratch *
-    * by Radim Kolar,   FSP project leader.                               *
-    *                                                                     *
-    * ABOUT FSP                                                           *
-    * FSP is a lightweight file transfer protocol and is being used for   *
-    * booting, Internet firmware updates, embedded devices and in         *
-    * wireless applications. FSP is very easy to implement; contact Radim *
-    * Kolar if you need hand optimized assembler FSP stacks for various   *
-    * microcontrollers, CPUs or consultations.                            *
-    * http://fsp.sourceforge.net/                                         *
-    *                                                                     *
-    * REVISION HISTORY                                                    *
-    * 1.0 2005-03-17 rkolar   Initial coding                              *
-    * 1.1 2005-03-24 rkolar   We really need to send CC_BYE to the server *
-    *                         at end of transfer, because next stage boot *
-    *                         loader is unable to contact FSP server      *
-    *                         until session timeouts.                     *
-    * 1.2 2005-03-26 rkolar   We need to query filesize in advance,       *
-    *                         because NBI loader do not reads file until  *
-    *                         eof is reached.
-    * REMARKS                                                             *
-    * there is no support for selecting port number of fsp server, maybe  *
-    *   we should parse fsp:// URLs in boot image filename.               *
-    * this implementation has filename limit 255 chars.                   *
-    \*********************************************************************/
-
-#ifdef DOWNLOAD_PROTO_FSP
-
-#define FSP_PORT 21
-
-/* FSP commands */
-#define CC_GET_FILE	0x42
-#define CC_BYE		0x4A
-#define CC_ERR		0x40
-#define CC_STAT		0x4D
-
-/* etherboot limits */
-#define FSP_MAXFILENAME 255
-
-struct fsp_info {
-	in_addr server_ip;
-	uint16_t server_port;
-	uint16_t local_port;
-	const char *filename;
-	int (*fnc)(unsigned char *, unsigned int, unsigned int, int);
-};
-
-struct fsp_header {
-    	uint8_t cmd;
-	uint8_t sum;
-	uint16_t key;
-	uint16_t seq;
-	uint16_t len;
-	uint32_t pos;
-} PACKED;
-
-#define FSP_MAXPAYLOAD (ETH_MAX_MTU - \
-  (sizeof(struct iphdr) + sizeof(struct udphdr) + sizeof(struct fsp_header)))
-
-static struct fsp_request {
-	struct iphdr ip;
-	struct udphdr udp;
-	struct fsp_header fsp;
-	unsigned char data[FSP_MAXFILENAME + 1 + 2];
-} request;
-
-struct fsp_reply {
-	struct iphdr ip;
-	struct udphdr udp;
-	struct fsp_header fsp;
-	unsigned char data[FSP_MAXPAYLOAD];
-} PACKED;
-
-
-static int await_fsp(int ival, void *ptr, unsigned short ptype __unused,
-                      struct iphdr *ip, struct udphdr *udp)
-{
-	if(!udp)
-	    return 0;
-	if (ip->dest.s_addr != arptable[ARP_CLIENT].ipaddr.s_addr) 
-	    return 0;
-        if (ntohs(udp->dest) != ival)
-            return 0;
-	if (ntohs(udp->len) < 12+sizeof(struct udphdr))
-	    return 0;
-	return 1;
-}
-
-static int proto_fsp(struct fsp_info *info)
-{
-    uint32_t filepos;
-    uint32_t filelength=0;
-    int i,retry;
-    uint16_t reqlen;
-    struct fsp_reply *reply;
-    int block=1;
-    
-    /* prepare FSP request packet */
-    filepos=0;
-    i=strlen(info->filename);
-    if(i>FSP_MAXFILENAME)
-    {
-	printf("Boot filename is too long.\n");
-	return 0;
-    }
-    strcpy(request.data,info->filename);
-    *(uint16_t *)(request.data+i+1)=htons(FSP_MAXPAYLOAD);
-    request.fsp.len=htons(i+1);
-    reqlen=i+3+12;
-
-    rx_qdrain();
-    retry=0;
-
-    /* main loop */
-    for(;;) {
-	int  sum;
-	long timeout;
-
-        /* query filelength if not known */
-	if(filelength == 0)
-	    request.fsp.cmd=CC_STAT;
-		
-	/* prepare request packet */
-	request.fsp.pos=htonl(filepos);
-	request.fsp.seq=random();
-	request.fsp.sum=0;
-	for(i=0,sum=reqlen;i<reqlen;i++)
-	{
-	    sum += ((uint8_t *)&request.fsp)[i];
-        }
-	request.fsp.sum= sum + (sum >> 8);
-	/* send request */
-        if (!udp_transmit(info->server_ip.s_addr, info->local_port,
-	                 info->server_port, sizeof(request.ip) +
-			 sizeof(request.udp) + reqlen, &request))
-	                    return (0);
-	/* wait for retry */		    
-#ifdef  CONGESTED
-        timeout =
-            rfc2131_sleep_interval(filepos ? TFTP_REXMT : TIMEOUT, retry);
-#else
-	timeout = rfc2131_sleep_interval(TIMEOUT, retry);
-#endif
-	retry++;
-        if (!await_reply(await_fsp, info->local_port, NULL, timeout))
-	    continue;
-	reply=(struct fsp_reply *) &nic.packet[ETH_HLEN];    
-	/* check received packet */
-	if (reply->fsp.seq != request.fsp.seq)
-	    continue;
-	reply->udp.len=ntohs(reply->udp.len)-sizeof(struct udphdr);
-	if(reply->udp.len < ntohs(reply->fsp.len) + 12 )
-	    continue;
-        sum=-reply->fsp.sum;
-	for(i=0;i<reply->udp.len;i++)
-	{
-	    sum += ((uint8_t *)&(reply->fsp))[i];
-        }
-        sum = (sum + (sum >> 8)) & 0xff;
-	if(sum != reply->fsp.sum)
-	{
-	    printf("FSP checksum failed. computed %d, but packet has %d.\n",sum,reply->fsp.sum);
-	    continue;
-	}
-	if(reply->fsp.cmd == CC_ERR)
-	{
-	    printf("\nFSP error: %s",info->filename);
-	    if(reply->fsp.len)
-	        printf(" [%s]",reply->data);
-	    printf("\n");
-	    return 0;
-	}
-	if(reply->fsp.cmd == CC_BYE && filelength == 1)
-	{
-	    info->fnc(request.data,block,1,1);
-	    return 1;
-	}
-	if(reply->fsp.cmd == CC_STAT)
-	{
-	    if(reply->data[8] == 0)
-	    {
-		/* file not found, etc. */
-		filelength=0xffffffff;
-	    } else
-	    {
-		filelength= ntohl(*((uint32_t *)&reply->data[4]));
-	    }
-	    request.fsp.cmd = CC_GET_FILE;
-	    request.fsp.key = reply->fsp.key;
-	    retry=0;
-	    continue;
-	}
-
-	if(reply->fsp.cmd == CC_GET_FILE)
-	{
-	    if(ntohl(reply->fsp.pos) != filepos)
-		continue;
-	    request.fsp.key = reply->fsp.key;
-	    retry=0;
-	    i=ntohs(reply->fsp.len);
-	    if(i == 1)
-	    {
-		request.fsp.cmd=CC_BYE;
-		request.data[0]=reply->data[0];
-		continue;
-	    }
-	    /* let last byte alone */
-            if(i >= filelength)
-		i = filelength - 1;
-	    if(!info->fnc(reply->data,block++,i,0))
-		return 0;
-	    filepos += i;
-	    filelength -= i;
-	}
-    }
-
-    return 0;
-}
-
-int url_fsp(const char *name, int (*fnc)(unsigned char *, unsigned int, unsigned int, int))
-{
-	struct fsp_info info;
-	/* Set the defaults */
-	info.server_ip.s_addr    = arptable[ARP_SERVER].ipaddr.s_addr;
-	info.server_port         = FSP_PORT;
-	info.local_port		 = 1024 + random() & 0xfbff;
-	info.fnc                 = fnc;
-	
-	/* Now parse the url */
-	/* printf("fsp-URI: [%s]\n", name); */
-        /* quick hack for now */
-	info.filename=name;
-	return proto_fsp(&info);
-}
-#endif