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authorwdenk <wdenk>2004-02-24 02:00:03 +0000
committerwdenk <wdenk>2004-02-24 02:00:03 +0000
commitcbd8a35c6dbaaca35494cbec319960887ad02dcf (patch)
treef3a5f6817a203a6e3a0a0ab7fb9df5b3697c07e3 /net/nfs.c
parent074cff0d2863bab21b065cf283eccd728f4fecaa (diff)
downloadtalos-obmc-uboot-cbd8a35c6dbaaca35494cbec319960887ad02dcf.zip
talos-obmc-uboot-cbd8a35c6dbaaca35494cbec319960887ad02dcf.tar.gz
* Patch by Masami Komiy, 22 Feb 2004:
Add support for NFS for file download * Minor code cleanup
Diffstat (limited to 'net/nfs.c')
-rw-r--r--net/nfs.c772
1 files changed, 772 insertions, 0 deletions
diff --git a/net/nfs.c b/net/nfs.c
new file mode 100644
index 0000000..6f4a06a
--- /dev/null
+++ b/net/nfs.c
@@ -0,0 +1,772 @@
+/*
+ * NFS support driver - based on etherboot and U-BOOT's tftp.c
+ *
+ * Masami Komiya <mkomiya@sonare.it> 2004
+ *
+ */
+
+/* NOTE: the NFS code is heavily inspired by the NetBSD netboot code (read:
+ * large portions are copied verbatim) as distributed in OSKit 0.97. A few
+ * changes were necessary to adapt the code to Etherboot and to fix several
+ * inconsistencies. Also the RPC message preparation is done "by hand" to
+ * avoid adding netsprintf() which I find hard to understand and use. */
+
+/* NOTE 2: Etherboot does not care about things beyond the kernel image, so
+ * it loads the kernel image off the boot server (ARP_SERVER) and does not
+ * access the client root disk (root-path in dhcpd.conf), which would use
+ * ARP_ROOTSERVER. The root disk is something the operating system we are
+ * about to load needs to use. This is different from the OSKit 0.97 logic. */
+
+/* NOTE 3: Symlink handling introduced by Anselm M Hoffmeister, 2003-July-14
+ * If a symlink is encountered, it is followed as far as possible (recursion
+ * possible, maximum 16 steps). There is no clearing of ".."'s inside the
+ * path, so please DON'T DO THAT. thx. */
+
+#include <common.h>
+#include <command.h>
+#include <net.h>
+#include <malloc.h>
+#include "nfs.h"
+#include "bootp.h"
+
+/*#define NFS_DEBUG*/
+
+#if ((CONFIG_COMMANDS & CFG_CMD_NET) && (CONFIG_COMMANDS & CFG_CMD_NFS))
+
+#define HASHES_PER_LINE 65 /* Number of "loading" hashes per line */
+#define NFS_TIMEOUT 10
+
+static int fs_mounted = 0;
+static unsigned long rpc_id;
+static int nfs_offset = -1;
+static int nfs_len;
+
+static char dirfh[NFS_FHSIZE]; /* file handle of directory */
+static char filefh[NFS_FHSIZE]; /* file handle of kernel image */
+
+static IPaddr_t NfsServerIP;
+static int NfsSrvMountPort;
+static int NfsSrvNfsPort;
+static int NfsOurPort;
+static int NfsTimeoutCount;
+static int NfsState;
+#define STATE_PRCLOOKUP_PROG_MOUNT_REQ 1
+#define STATE_PRCLOOKUP_PROG_NFS_REQ 2
+#define STATE_MOUNT_REQ 3
+#define STATE_UMOUNT_REQ 4
+#define STATE_LOOKUP_REQ 5
+#define STATE_READ_REQ 6
+#define STATE_READLINK_REQ 7
+
+static char default_filename[64];
+static char *nfs_filename;
+static char *nfs_path;
+static char nfs_path_buff[2048];
+
+static __inline__ void
+store_block (uchar * src, unsigned offset, unsigned len)
+{
+#ifdef CFG_DIRECT_FLASH_NFS
+ int i, rc = 0;
+
+ for (i=0; i<CFG_MAX_FLASH_BANKS; i++) {
+ /* start address in flash? */
+ if (load_addr + offset >= flash_info[i].start[0]) {
+ rc = 1;
+ break;
+ }
+ }
+
+ if (rc) { /* Flash is destination for this packet */
+ rc = flash_write ((uchar *)src, (ulong)(load_addr+offset), len);
+ if (rc) {
+ flash_perror (rc);
+ NetState = NETLOOP_FAIL;
+ return;
+ }
+ } else
+#endif /* CFG_DIRECT_FLASH_NFS */
+
+ {
+ (void)memcpy ((void *)(load_addr + offset), src, len);
+ }
+}
+
+static char*
+basename (char *path)
+{
+ char *fname;
+
+ fname = path + strlen(path) - 1;
+ while (fname >= path) {
+ if (*fname == '/') {
+ fname++;
+ break;
+ }
+ fname--;
+ }
+ return fname;
+}
+
+static char*
+dirname (char *path)
+{
+ char *fname;
+
+ fname = basename (path);
+ --fname;
+ *fname = '\0';
+ return path;
+}
+
+/**************************************************************************
+RPC_INIT - set up the ID counter to something fairly random
+**************************************************************************/
+static void
+rpc_init (void)
+{
+ unsigned long t;
+ t=get_ticks();
+ rpc_id = t ^ (t << 8) ^ (t << 16);
+}
+
+/**************************************************************************
+RPC_ADD_CREDENTIALS - Add RPC authentication/verifier entries
+**************************************************************************/
+static long *rpc_add_credentials (long *p)
+{
+ int hl;
+ int hostnamelen;
+ char hostname[256];
+
+ strcpy (hostname, "");
+ hostnamelen=strlen (hostname);
+
+ /* Here's the executive summary on authentication requirements of the
+ * various NFS server implementations: Linux accepts both AUTH_NONE
+ * and AUTH_UNIX authentication (also accepts an empty hostname field
+ * in the AUTH_UNIX scheme). *BSD refuses AUTH_NONE, but accepts
+ * AUTH_UNIX (also accepts an empty hostname field in the AUTH_UNIX
+ * scheme). To be safe, use AUTH_UNIX and pass the hostname if we have
+ * it (if the BOOTP/DHCP reply didn't give one, just use an empty
+ * hostname). */
+
+ hl = (hostnamelen + 3) & ~3;
+
+ /* Provide an AUTH_UNIX credential. */
+ *p++ = htonl(1); /* AUTH_UNIX */
+ *p++ = htonl(hl+20); /* auth length */
+ *p++ = htonl(0); /* stamp */
+ *p++ = htonl(hostnamelen); /* hostname string */
+ if (hostnamelen & 3) {
+ *(p + hostnamelen / 4) = 0; /* add zero padding */
+ }
+ memcpy (p, hostname, hostnamelen);
+ p += hl / 4;
+ *p++ = 0; /* uid */
+ *p++ = 0; /* gid */
+ *p++ = 0; /* auxiliary gid list */
+
+ /* Provide an AUTH_NONE verifier. */
+ *p++ = 0; /* AUTH_NONE */
+ *p++ = 0; /* auth length */
+
+ return p;
+}
+
+/**************************************************************************
+RPC_LOOKUP - Lookup RPC Port numbers
+**************************************************************************/
+static void
+rpc_req (int rpc_prog, int rpc_proc, uint32_t *data, int datalen)
+{
+ struct rpc_t pkt;
+ unsigned long id;
+ uint32_t *p;
+ int pktlen;
+ int sport;
+
+ id = rpc_id++;
+ pkt.u.call.id = htonl(id);
+ pkt.u.call.type = htonl(MSG_CALL);
+ pkt.u.call.rpcvers = htonl(2); /* use RPC version 2 */
+ pkt.u.call.prog = htonl(rpc_prog);
+ pkt.u.call.vers = htonl(2); /* portmapper is version 2 */
+ pkt.u.call.proc = htonl(rpc_proc);
+ p = (uint32_t *)&(pkt.u.call.data);
+
+ if (datalen)
+ memcpy ((char *)p, (char *)data, datalen*sizeof(uint32_t));
+
+ pktlen = (char *)p + datalen*sizeof(uint32_t) - (char *)&pkt;
+
+ memcpy ((char *)NetTxPacket+ETHER_HDR_SIZE+IP_HDR_SIZE, (char *)&pkt, pktlen);
+
+ if (rpc_prog == PROG_PORTMAP)
+ sport = SUNRPC_PORT;
+ else if (rpc_prog == PROG_MOUNT)
+ sport = NfsSrvMountPort;
+ else
+ sport = NfsSrvNfsPort;
+
+ NetSendUDPPacket (NetServerEther, NfsServerIP, sport, NfsOurPort, pktlen);
+}
+
+/**************************************************************************
+RPC_LOOKUP - Lookup RPC Port numbers
+**************************************************************************/
+static void
+rpc_lookup_req (int prog, int ver)
+{
+ uint32_t data[16];
+
+ data[0] = 0; data[1] = 0; /* auth credential */
+ data[2] = 0; data[3] = 0; /* auth verifier */
+ data[4] = htonl(prog);
+ data[5] = htonl(ver);
+ data[6] = htonl(17); /* IP_UDP */
+ data[7] = 0;
+
+ rpc_req (PROG_PORTMAP, PORTMAP_GETPORT, data, 8);
+}
+
+/**************************************************************************
+NFS_MOUNT - Mount an NFS Filesystem
+**************************************************************************/
+static void
+nfs_mount_req (char *path)
+{
+ uint32_t data[1024];
+ uint32_t *p;
+ int len;
+ int pathlen;
+
+ pathlen = strlen (path);
+
+ p = &(data[0]);
+ p = (uint32_t *)rpc_add_credentials((long *)p);
+
+ *p++ = htonl(pathlen);
+ if (pathlen & 3) *(p + pathlen / 4) = 0;
+ memcpy (p, path, pathlen);
+ p += (pathlen + 3) / 4;
+
+ len = (uint32_t *)p - (uint32_t *)&(data[0]);
+
+ rpc_req (PROG_MOUNT, MOUNT_ADDENTRY, data, len);
+}
+
+/**************************************************************************
+NFS_UMOUNTALL - Unmount all our NFS Filesystems on the Server
+**************************************************************************/
+static void
+nfs_umountall_req (void)
+{
+ uint32_t data[1024];
+ uint32_t *p;
+ int len;
+
+ if ((NfsSrvMountPort == -1) || (!fs_mounted)) {
+ /* Nothing mounted, nothing to umount */
+ return;
+ }
+
+ p = &(data[0]);
+ p = (uint32_t *)rpc_add_credentials ((long *)p);
+
+ len = (uint32_t *)p - (uint32_t *)&(data[0]);
+
+ rpc_req (PROG_MOUNT, MOUNT_UMOUNTALL, data, len);
+}
+
+/***************************************************************************
+ * NFS_READLINK (AH 2003-07-14)
+ * This procedure is called when read of the first block fails -
+ * this probably happens when it's a directory or a symlink
+ * In case of successful readlink(), the dirname is manipulated,
+ * so that inside the nfs() function a recursion can be done.
+ **************************************************************************/
+static void
+nfs_readlink_req (void)
+{
+ uint32_t data[1024];
+ uint32_t *p;
+ int len;
+
+ p = &(data[0]);
+ p = (uint32_t *)rpc_add_credentials ((long *)p);
+
+ memcpy (p, filefh, NFS_FHSIZE);
+ p += (NFS_FHSIZE / 4);
+
+ len = (uint32_t *)p - (uint32_t *)&(data[0]);
+
+ rpc_req (PROG_NFS, NFS_READLINK, data, len);
+}
+
+/**************************************************************************
+NFS_LOOKUP - Lookup Pathname
+**************************************************************************/
+static void
+nfs_lookup_req (char *fname)
+{
+ uint32_t data[1024];
+ uint32_t *p;
+ int len;
+ int fnamelen;
+
+ fnamelen = strlen (fname);
+
+ p = &(data[0]);
+ p = (uint32_t *)rpc_add_credentials ((long *)p);
+
+ memcpy (p, dirfh, NFS_FHSIZE);
+ p += (NFS_FHSIZE / 4);
+ *p++ = htonl(fnamelen);
+ if (fnamelen & 3) *(p + fnamelen / 4) = 0;
+ memcpy (p, fname, fnamelen);
+ p += (fnamelen + 3) / 4;
+
+ len = (uint32_t *)p - (uint32_t *)&(data[0]);
+
+ rpc_req (PROG_NFS, NFS_LOOKUP, data, len);
+}
+
+/**************************************************************************
+NFS_READ - Read File on NFS Server
+**************************************************************************/
+static void
+nfs_read_req (int offset, int readlen)
+{
+ uint32_t data[1024];
+ uint32_t *p;
+ int len;
+
+ p = &(data[0]);
+ p = (uint32_t *)rpc_add_credentials ((long *)p);
+
+ memcpy (p, filefh, NFS_FHSIZE);
+ p += (NFS_FHSIZE / 4);
+ *p++ = htonl(offset);
+ *p++ = htonl(readlen);
+ *p++ = 0;
+
+ len = (uint32_t *)p - (uint32_t *)&(data[0]);
+
+ rpc_req (PROG_NFS, NFS_READ, data, len);
+}
+
+/**************************************************************************
+RPC request dispatcher
+**************************************************************************/
+
+static void
+NfsSend (void)
+{
+#ifdef NFS_DEBUG
+ printf ("%s\n", __FUNCTION__);
+#endif
+
+ switch (NfsState) {
+ case STATE_PRCLOOKUP_PROG_MOUNT_REQ:
+ rpc_lookup_req (PROG_MOUNT, 1);
+ break;
+ case STATE_PRCLOOKUP_PROG_NFS_REQ:
+ rpc_lookup_req (PROG_NFS, 2);
+ break;
+ case STATE_MOUNT_REQ:
+ nfs_mount_req (nfs_path);
+ break;
+ case STATE_UMOUNT_REQ:
+ nfs_umountall_req ();
+ break;
+ case STATE_LOOKUP_REQ:
+ nfs_lookup_req (nfs_filename);
+ break;
+ case STATE_READ_REQ:
+ nfs_read_req (nfs_offset, nfs_len);
+ break;
+ case STATE_READLINK_REQ:
+ nfs_readlink_req ();
+ break;
+ }
+}
+
+/**************************************************************************
+Handlers for the reply from server
+**************************************************************************/
+
+static int
+rpc_lookup_reply (int prog, uchar *pkt, unsigned len)
+{
+ struct rpc_t rpc_pkt;
+
+ memcpy ((unsigned char *)&rpc_pkt, pkt, len);
+
+#ifdef NFS_DEBUG
+ printf ("%s\n", __FUNCTION__);
+#endif
+
+ if (rpc_pkt.u.reply.rstatus ||
+ rpc_pkt.u.reply.verifier ||
+ rpc_pkt.u.reply.astatus ||
+ rpc_pkt.u.reply.astatus) {
+ }
+
+ switch (prog) {
+ case PROG_MOUNT:
+ NfsSrvMountPort = ntohl(rpc_pkt.u.reply.data[0]);
+ break;
+ case PROG_NFS:
+ NfsSrvNfsPort = ntohl(rpc_pkt.u.reply.data[0]);
+ break;
+ }
+
+ return 0;
+}
+
+static int
+nfs_mount_reply (uchar *pkt, unsigned len)
+{
+ struct rpc_t rpc_pkt;
+
+#ifdef NFS_DEBUG
+ printf ("%s\n", __FUNCTION__);
+#endif
+
+ memcpy ((unsigned char *)&rpc_pkt, pkt, len);
+
+ if (rpc_pkt.u.reply.rstatus ||
+ rpc_pkt.u.reply.verifier ||
+ rpc_pkt.u.reply.astatus ||
+ rpc_pkt.u.reply.data[0]) {
+ return -1;
+ }
+
+ fs_mounted = 1;
+ memcpy (dirfh, rpc_pkt.u.reply.data + 1, NFS_FHSIZE);
+
+ return 0;
+}
+
+static int
+nfs_umountall_reply (uchar *pkt, unsigned len)
+{
+ struct rpc_t rpc_pkt;
+
+#ifdef NFS_DEBUG
+ printf ("%s\n", __FUNCTION__);
+#endif
+
+ memcpy ((unsigned char *)&rpc_pkt, pkt, len);
+
+ if (rpc_pkt.u.reply.rstatus ||
+ rpc_pkt.u.reply.verifier ||
+ rpc_pkt.u.reply.astatus) {
+ return -1;
+ }
+
+ fs_mounted = 0;
+ memset (dirfh, 0, sizeof(dirfh));
+
+ return 0;
+}
+
+static int
+nfs_lookup_reply (uchar *pkt, unsigned len)
+{
+ struct rpc_t rpc_pkt;
+
+#ifdef NFS_DEBUG
+ printf ("%s\n", __FUNCTION__);
+#endif
+
+ memcpy ((unsigned char *)&rpc_pkt, pkt, len);
+
+ if (rpc_pkt.u.reply.rstatus ||
+ rpc_pkt.u.reply.verifier ||
+ rpc_pkt.u.reply.astatus ||
+ rpc_pkt.u.reply.data[0]) {
+ return -1;
+ }
+
+ memcpy (filefh, rpc_pkt.u.reply.data + 1, NFS_FHSIZE);
+
+ return 0;
+}
+
+static int
+nfs_readlink_reply (uchar *pkt, unsigned len)
+{
+ struct rpc_t rpc_pkt;
+ int rlen;
+
+#ifdef NFS_DEBUG
+ printf ("%s\n", __FUNCTION__);
+#endif
+
+ memcpy ((unsigned char *)&rpc_pkt, pkt, len);
+
+ if (rpc_pkt.u.reply.rstatus ||
+ rpc_pkt.u.reply.verifier ||
+ rpc_pkt.u.reply.astatus ||
+ rpc_pkt.u.reply.data[0]) {
+ return -1;
+ }
+
+ rlen = ntohl (rpc_pkt.u.reply.data[1]); /* new path length */
+
+ if (*((char *)&(rpc_pkt.u.reply.data[2])) != '/') {
+ int pathlen;
+ strcat (nfs_path, "/");
+ pathlen = strlen(nfs_path);
+ memcpy (nfs_path+pathlen, (uchar *)&(rpc_pkt.u.reply.data[2]), rlen);
+ nfs_path[pathlen+rlen+1] = 0;
+ } else {
+ memcpy (nfs_path, (uchar *)&(rpc_pkt.u.reply.data[2]), rlen);
+ nfs_path[rlen] = 0;
+ }
+ return 0;
+}
+
+static int
+nfs_read_reply (uchar *pkt, unsigned len)
+{
+ struct rpc_t rpc_pkt;
+ int rlen;
+
+#ifdef NFS_DEBUG_nop
+ printf ("%s\n", __FUNCTION__);
+#endif
+
+ rlen = (uchar *)&(rpc_pkt.u.reply.data[19]) - (uchar *)&(rpc_pkt.u.reply.id);
+ memcpy ((uchar *)&rpc_pkt, pkt, rlen);
+
+ if (rpc_pkt.u.reply.rstatus ||
+ rpc_pkt.u.reply.verifier ||
+ rpc_pkt.u.reply.astatus ||
+ rpc_pkt.u.reply.data[0]) {
+ if (rpc_pkt.u.reply.rstatus) {
+ return -9999;
+ }
+ if (rpc_pkt.u.reply.astatus) {
+ return -9999;
+ }
+ return -ntohl(rpc_pkt.u.reply.data[0]);;
+ }
+
+ if ((nfs_offset!=0) && !((nfs_offset) % (NFS_READ_SIZE/2*10*HASHES_PER_LINE))) {
+ puts ("\n\t ");
+ }
+ if (!(nfs_offset % ((NFS_READ_SIZE/2)*10))) {
+ putc ('#');
+ }
+
+ rlen = ntohl(rpc_pkt.u.reply.data[18]);
+ store_block ((uchar *)&(rpc_pkt.u.reply.data[19]), nfs_offset, rlen);
+
+ return rlen;
+}
+
+/**************************************************************************
+Interfaces of U-BOOT
+**************************************************************************/
+
+static void
+NfsHandler (uchar *pkt, unsigned dest, unsigned src, unsigned len)
+{
+ int rlen;
+
+#ifdef NFS_DEBUG
+ printf ("%s\n", __FUNCTION__);
+#endif
+
+ if (dest != NfsOurPort) return;
+
+ switch (NfsState) {
+ case STATE_PRCLOOKUP_PROG_MOUNT_REQ:
+ rpc_lookup_reply (PROG_MOUNT, pkt, len);
+ NfsState = STATE_PRCLOOKUP_PROG_NFS_REQ;
+ NfsSend ();
+ break;
+
+ case STATE_PRCLOOKUP_PROG_NFS_REQ:
+ rpc_lookup_reply (PROG_NFS, pkt, len);
+ NfsState = STATE_MOUNT_REQ;
+ NfsSend ();
+ break;
+
+ case STATE_MOUNT_REQ:
+ if (nfs_mount_reply(pkt, len)) {
+ puts ("*** ERROR: Cannot mount\n");
+ /* just to be sure... */
+ NfsState = STATE_UMOUNT_REQ;
+ NfsSend ();
+ } else {
+ NfsState = STATE_LOOKUP_REQ;
+ NfsSend ();
+ }
+ break;
+
+ case STATE_UMOUNT_REQ:
+ if (nfs_umountall_reply(pkt, len)) {
+ puts ("*** ERROR: Cannot umount\n");
+ NetState = NETLOOP_FAIL;
+ } else {
+ NetState = NETLOOP_SUCCESS;
+ }
+ break;
+
+ case STATE_LOOKUP_REQ:
+ if (nfs_lookup_reply(pkt, len)) {
+ puts ("*** ERROR: File lookup fail\n");
+ NfsState = STATE_UMOUNT_REQ;
+ NfsSend ();
+ } else {
+ NfsState = STATE_READ_REQ;
+ nfs_offset = 0;
+ nfs_len = NFS_READ_SIZE;
+ NfsSend ();
+ }
+ break;
+
+ case STATE_READLINK_REQ:
+ if (nfs_readlink_reply(pkt, len)) {
+ puts ("*** ERROR: Symlink fail\n");
+ NfsState = STATE_UMOUNT_REQ;
+ NfsSend ();
+ } else {
+#ifdef NFS_DEBUG
+ printf ("Symlink --> %s\n", nfs_path);
+#endif
+ nfs_filename = basename (nfs_path);
+ nfs_path = dirname (nfs_path);
+
+ NfsState = STATE_MOUNT_REQ;
+ NfsSend ();
+ }
+ break;
+
+ case STATE_READ_REQ:
+ rlen = nfs_read_reply (pkt, len);
+ if (rlen > 0) {
+ nfs_offset += rlen;
+ NfsSend ();
+ }
+ else if ((rlen == -NFSERR_ISDIR)||(rlen == -NFSERR_INVAL)) {
+ /* symbolic link */
+ NfsState = STATE_READLINK_REQ;
+ NfsSend ();
+ } else {
+ puts ("\ndone\n");
+ printf ("Bytes transferred = %d (%x hex)\n",
+ nfs_offset, nfs_offset);
+ NfsState = STATE_UMOUNT_REQ;
+ NfsSend ();
+ }
+ break;
+ }
+}
+
+static void
+NfsTimeout (void)
+{
+ puts ("Timeout\n");
+ NetState = NETLOOP_FAIL;
+ return;
+}
+
+void
+NfsStart (void)
+{
+#ifdef NFS_DEBUG
+ printf ("%s\n", __FUNCTION__);
+#endif
+
+ NfsServerIP = NetServerIP;
+ nfs_path = (char *)nfs_path_buff;
+
+ if (nfs_path == NULL) {
+ NetState = NETLOOP_FAIL;
+ puts ("*** ERROR: Fail allocate memory\n");
+ return;
+ }
+
+ if (BootFile[0] == '\0') {
+ IPaddr_t OurIP = ntohl (NetOurIP);
+
+ sprintf (default_filename, "/nfsroot/%02lX%02lX%02lX%02lX.img",
+ OurIP & 0xFF,
+ (OurIP >> 8) & 0xFF,
+ (OurIP >> 16) & 0xFF,
+ (OurIP >> 24) & 0xFF );
+ strcpy (nfs_path, default_filename);
+
+ printf ("*** Warning: no boot file name; using '%s'\n",
+ nfs_path);
+ } else {
+ char *p=BootFile;
+
+ p = strchr (p, ':');
+
+ if (p != NULL) {
+ NfsServerIP = string_to_ip (BootFile);
+ ++p;
+ strcpy (nfs_path, p);
+ } else {
+ strcpy (nfs_path, BootFile);
+ }
+ }
+
+ nfs_filename = basename (nfs_path);
+ nfs_path = dirname (nfs_path);
+
+#if defined(CONFIG_NET_MULTI)
+ printf ("Using %s device\n", eth_get_name());
+#endif
+
+ puts ("File transfer via NFS from server "); print_IPaddr (NfsServerIP);
+ puts ("; our IP address is "); print_IPaddr (NetOurIP);
+
+ /* Check if we need to send across this subnet */
+ if (NetOurGatewayIP && NetOurSubnetMask) {
+ IPaddr_t OurNet = NetOurIP & NetOurSubnetMask;
+ IPaddr_t ServerNet = NetServerIP & NetOurSubnetMask;
+
+ if (OurNet != ServerNet) {
+ puts ("; sending through gateway ");
+ print_IPaddr (NetOurGatewayIP) ;
+ }
+ }
+ putc ('\n');
+
+ printf ("Filename '%s/%s'.", nfs_path, nfs_filename);
+
+ if (NetBootFileSize) {
+ printf (" Size is 0x%x Bytes = ", NetBootFileSize<<9);
+ print_size (NetBootFileSize<<9, "");
+ }
+ putc ('\n');
+
+ printf ("Load address: 0x%lx\n", load_addr);
+
+ printf ("Loading: *\b");
+
+ NetSetTimeout (NFS_TIMEOUT * CFG_HZ, NfsTimeout);
+ NetSetHandler (NfsHandler);
+
+ rpc_init ();
+ NfsTimeoutCount = 0;
+ NfsState = STATE_PRCLOOKUP_PROG_MOUNT_REQ;
+
+ /*NfsOurPort = 4096 + (get_ticks() % 3072);*/
+ /*FIX ME !!!*/
+ NfsOurPort = 1000;
+
+ /* zero out server ether in case the server ip has changed */
+ memset (NetServerEther, 0, 6);
+
+ NfsSend ();
+}
+
+#endif /* CONFIG_COMMANDS & CFG_CMD_NFS */
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