--- /dev/null
+/*
+ * Copyright 1994, 1995, 2000 Neil Russell.
+ * (See License)
+ * Copyright 2000, 2001 DENX Software Engineering, Wolfgang Denk, wd@denx.de
+ * Copyright 2011 Comelit Group SpA,
+ * Luca Ceresoli <luca.ceresoli@comelit.it>
+ */
+
+#include <common.h>
+#include <command.h>
+#include <net.h>
+#include "tftp.h"
+#include "bootp.h"
+#ifdef CONFIG_SYS_DIRECT_FLASH_TFTP
+#include <flash.h>
+#endif
+
+/* Well known TFTP port # */
+#define WELL_KNOWN_PORT 69
+/* Millisecs to timeout for lost pkt */
+#define TIMEOUT 5000UL
+#ifndef CONFIG_NET_RETRY_COUNT
+/* # of timeouts before giving up */
+# define TIMEOUT_COUNT 10
+#else
+# define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT * 2)
+#endif
+/* Number of "loading" hashes per line (for checking the image size) */
+#define HASHES_PER_LINE 65
+
+/*
+ * TFTP operations.
+ */
+#define TFTP_RRQ 1
+#define TFTP_WRQ 2
+#define TFTP_DATA 3
+#define TFTP_ACK 4
+#define TFTP_ERROR 5
+#define TFTP_OACK 6
+
+static ulong TftpTimeoutMSecs = TIMEOUT;
+static int TftpTimeoutCountMax = TIMEOUT_COUNT;
+static ulong time_start; /* Record time we started tftp */
+
+/*
+ * These globals govern the timeout behavior when attempting a connection to a
+ * TFTP server. TftpRRQTimeoutMSecs specifies the number of milliseconds to
+ * wait for the server to respond to initial connection. Second global,
+ * TftpRRQTimeoutCountMax, gives the number of such connection retries.
+ * TftpRRQTimeoutCountMax must be non-negative and TftpRRQTimeoutMSecs must be
+ * positive. The globals are meant to be set (and restored) by code needing
+ * non-standard timeout behavior when initiating a TFTP transfer.
+ */
+ulong TftpRRQTimeoutMSecs = TIMEOUT;
+int TftpRRQTimeoutCountMax = TIMEOUT_COUNT;
+
+enum {
+ TFTP_ERR_UNDEFINED = 0,
+ TFTP_ERR_FILE_NOT_FOUND = 1,
+ TFTP_ERR_ACCESS_DENIED = 2,
+ TFTP_ERR_DISK_FULL = 3,
+ TFTP_ERR_UNEXPECTED_OPCODE = 4,
+ TFTP_ERR_UNKNOWN_TRANSFER_ID = 5,
+ TFTP_ERR_FILE_ALREADY_EXISTS = 6,
+};
+
+static IPaddr_t TftpRemoteIP;
+/* The UDP port at their end */
+static int TftpRemotePort;
+/* The UDP port at our end */
+static int TftpOurPort;
+static int TftpTimeoutCount;
+/* packet sequence number */
+static ulong TftpBlock;
+/* last packet sequence number received */
+static ulong TftpLastBlock;
+/* count of sequence number wraparounds */
+static ulong TftpBlockWrap;
+/* memory offset due to wrapping */
+static ulong TftpBlockWrapOffset;
+static int TftpState;
+#ifdef CONFIG_TFTP_TSIZE
+/* The file size reported by the server */
+static int TftpTsize;
+/* The number of hashes we printed */
+static short TftpNumchars;
+#endif
+#ifdef CONFIG_CMD_TFTPPUT
+static int TftpWriting; /* 1 if writing, else 0 */
+static int TftpFinalBlock; /* 1 if we have sent the last block */
+#else
+#define TftpWriting 0
+#endif
+
+#define STATE_SEND_RRQ 1
+#define STATE_DATA 2
+#define STATE_TOO_LARGE 3
+#define STATE_BAD_MAGIC 4
+#define STATE_OACK 5
+#define STATE_RECV_WRQ 6
+#define STATE_SEND_WRQ 7
+
+/* default TFTP block size */
+#define TFTP_BLOCK_SIZE 512
+/* sequence number is 16 bit */
+#define TFTP_SEQUENCE_SIZE ((ulong)(1<<16))
+
+#define DEFAULT_NAME_LEN (8 + 4 + 1)
+static char default_filename[DEFAULT_NAME_LEN];
+
+#ifndef CONFIG_TFTP_FILE_NAME_MAX_LEN
+#define MAX_LEN 128
+#else
+#define MAX_LEN CONFIG_TFTP_FILE_NAME_MAX_LEN
+#endif
+
+static char tftp_filename[MAX_LEN];
+
+/* 512 is poor choice for ethernet, MTU is typically 1500.
+ * Minus eth.hdrs thats 1468. Can get 2x better throughput with
+ * almost-MTU block sizes. At least try... fall back to 512 if need be.
+ * (but those using CONFIG_IP_DEFRAG may want to set a larger block in cfg file)
+ */
+#ifdef CONFIG_TFTP_BLOCKSIZE
+#define TFTP_MTU_BLOCKSIZE CONFIG_TFTP_BLOCKSIZE
+#else
+#define TFTP_MTU_BLOCKSIZE 1468
+#endif
+
+static unsigned short TftpBlkSize = TFTP_BLOCK_SIZE;
+static unsigned short TftpBlkSizeOption = TFTP_MTU_BLOCKSIZE;
+
+#ifdef CONFIG_MCAST_TFTP
+#include <malloc.h>
+#define MTFTP_BITMAPSIZE 0x1000
+static unsigned *Bitmap;
+static int PrevBitmapHole, Mapsize = MTFTP_BITMAPSIZE;
+static uchar ProhibitMcast, MasterClient;
+static uchar Multicast;
+static int Mcast_port;
+static ulong TftpEndingBlock; /* can get 'last' block before done..*/
+
+static void parse_multicast_oack(char *pkt, int len);
+
+static void
+mcast_cleanup(void)
+{
+ if (Mcast_addr)
+ eth_mcast_join(Mcast_addr, 0);
+ if (Bitmap)
+ free(Bitmap);
+ Bitmap = NULL;
+ Mcast_addr = Multicast = Mcast_port = 0;
+ TftpEndingBlock = -1;
+}
+
+#endif /* CONFIG_MCAST_TFTP */
+
+static inline void
+store_block(int block, uchar *src, unsigned len)
+{
+ ulong offset = block * TftpBlkSize + TftpBlockWrapOffset;
+ ulong newsize = offset + len;
+#ifdef CONFIG_SYS_DIRECT_FLASH_TFTP
+ int i, rc = 0;
+
+ for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
+ /* start address in flash? */
+ if (flash_info[i].flash_id == FLASH_UNKNOWN)
+ continue;
+ if (load_addr + offset >= flash_info[i].start[0]) {
+ rc = 1;
+ break;
+ }
+ }
+
+ if (rc) { /* Flash is destination for this packet */
+ rc = flash_write((char *)src, (ulong)(load_addr+offset), len);
+ if (rc) {
+ flash_perror(rc);
+ net_set_state(NETLOOP_FAIL);
+ return;
+ }
+ } else
+#endif /* CONFIG_SYS_DIRECT_FLASH_TFTP */
+ {
+ (void)memcpy((void *)(load_addr + offset), src, len);
+ }
+#ifdef CONFIG_MCAST_TFTP
+ if (Multicast)
+ ext2_set_bit(block, Bitmap);
+#endif
+
+ if (NetBootFileXferSize < newsize)
+ NetBootFileXferSize = newsize;
+}
+
+/* Clear our state ready for a new transfer */
+static void new_transfer(void)
+{
+ TftpLastBlock = 0;
+ TftpBlockWrap = 0;
+ TftpBlockWrapOffset = 0;
+#ifdef CONFIG_CMD_TFTPPUT
+ TftpFinalBlock = 0;
+#endif
+}
+
+#ifdef CONFIG_CMD_TFTPPUT
+/**
+ * Load the next block from memory to be sent over tftp.
+ *
+ * @param block Block number to send
+ * @param dst Destination buffer for data
+ * @param len Number of bytes in block (this one and every other)
+ * @return number of bytes loaded
+ */
+static int load_block(unsigned block, uchar *dst, unsigned len)
+{
+ /* We may want to get the final block from the previous set */
+ ulong offset = ((int)block - 1) * len + TftpBlockWrapOffset;
+ ulong tosend = len;
+
+ tosend = min(NetBootFileXferSize - offset, tosend);
+ (void)memcpy(dst, (void *)(save_addr + offset), tosend);
+ debug("%s: block=%d, offset=%ld, len=%d, tosend=%ld\n", __func__,
+ block, offset, len, tosend);
+ return tosend;
+}
+#endif
+
+static void TftpSend(void);
+static void TftpTimeout(void);
+
+/**********************************************************************/
+
+static void show_block_marker(void)
+{
+#ifdef CONFIG_TFTP_TSIZE
+ if (TftpTsize) {
+ ulong pos = TftpBlock * TftpBlkSize + TftpBlockWrapOffset;
+
+ while (TftpNumchars < pos * 50 / TftpTsize) {
+ putc('#');
+ TftpNumchars++;
+ }
+ } else
+#endif
+ {
+ if (((TftpBlock - 1) % 10) == 0)
+ putc('#');
+ else if ((TftpBlock % (10 * HASHES_PER_LINE)) == 0)
+ puts("\n\t ");
+ }
+}
+
+/**
+ * restart the current transfer due to an error
+ *
+ * @param msg Message to print for user
+ */
+static void restart(const char *msg)
+{
+ printf("\n%s; starting again\n", msg);
+#ifdef CONFIG_MCAST_TFTP
+ mcast_cleanup();
+#endif
+ NetStartAgain();
+}
+
+/*
+ * Check if the block number has wrapped, and update progress
+ *
+ * TODO: The egregious use of global variables in this file should be tidied.
+ */
+static void update_block_number(void)
+{
+ /*
+ * RFC1350 specifies that the first data packet will
+ * have sequence number 1. If we receive a sequence
+ * number of 0 this means that there was a wrap
+ * around of the (16 bit) counter.
+ */
+ if (TftpBlock == 0 && TftpLastBlock != 0) {
+ TftpBlockWrap++;
+ TftpBlockWrapOffset += TftpBlkSize * TFTP_SEQUENCE_SIZE;
+ TftpTimeoutCount = 0; /* we've done well, reset thhe timeout */
+ } else {
+ show_block_marker();
+ }
+}
+
+/* The TFTP get or put is complete */
+static void tftp_complete(void)
+{
+#ifdef CONFIG_TFTP_TSIZE
+ /* Print hash marks for the last packet received */
+ while (TftpTsize && TftpNumchars < 49) {
+ putc('#');
+ TftpNumchars++;
+ }
+#endif
+ time_start = get_timer(time_start);
+ if (time_start > 0) {
+ puts("\n\t "); /* Line up with "Loading: " */
+ print_size(NetBootFileXferSize /
+ time_start * 1000, "/s");
+ }
+ puts("\ndone\n");
+ net_set_state(NETLOOP_SUCCESS);
+}
+
+static void
+TftpSend(void)
+{
+ uchar *pkt;
+ uchar *xp;
+ int len = 0;
+ ushort *s;
+
+#ifdef CONFIG_MCAST_TFTP
+ /* Multicast TFTP.. non-MasterClients do not ACK data. */
+ if (Multicast
+ && (TftpState == STATE_DATA)
+ && (MasterClient == 0))
+ return;
+#endif
+ /*
+ * We will always be sending some sort of packet, so
+ * cobble together the packet headers now.
+ */
+ pkt = NetTxPacket + NetEthHdrSize() + IP_UDP_HDR_SIZE;
+
+ switch (TftpState) {
+ case STATE_SEND_RRQ:
+ case STATE_SEND_WRQ:
+ xp = pkt;
+ s = (ushort *)pkt;
+#ifdef CONFIG_CMD_TFTPPUT
+ *s++ = htons(TftpState == STATE_SEND_RRQ ? TFTP_RRQ :
+ TFTP_WRQ);
+#else
+ *s++ = htons(TFTP_RRQ);
+#endif
+ pkt = (uchar *)s;
+ strcpy((char *)pkt, tftp_filename);
+ pkt += strlen(tftp_filename) + 1;
+ strcpy((char *)pkt, "octet");
+ pkt += 5 /*strlen("octet")*/ + 1;
+ strcpy((char *)pkt, "timeout");
+ pkt += 7 /*strlen("timeout")*/ + 1;
+ sprintf((char *)pkt, "%lu", TftpTimeoutMSecs / 1000);
+ debug("send option \"timeout %s\"\n", (char *)pkt);
+ pkt += strlen((char *)pkt) + 1;
+#ifdef CONFIG_TFTP_TSIZE
+ pkt += sprintf((char *)pkt, "tsize%c%lu%c",
+ 0, NetBootFileXferSize, 0);
+#endif
+ /* try for more effic. blk size */
+ pkt += sprintf((char *)pkt, "blksize%c%d%c",
+ 0, TftpBlkSizeOption, 0);
+#ifdef CONFIG_MCAST_TFTP
+ /* Check all preconditions before even trying the option */
+ if (!ProhibitMcast) {
+ Bitmap = malloc(Mapsize);
+ if (Bitmap && eth_get_dev()->mcast) {
+ free(Bitmap);
+ Bitmap = NULL;
+ pkt += sprintf((char *)pkt, "multicast%c%c",
+ 0, 0);
+ }
+ }
+#endif /* CONFIG_MCAST_TFTP */
+ len = pkt - xp;
+ break;
+
+ case STATE_OACK:
+#ifdef CONFIG_MCAST_TFTP
+ /* My turn! Start at where I need blocks I missed.*/
+ if (Multicast)
+ TftpBlock = ext2_find_next_zero_bit(Bitmap,
+ (Mapsize*8), 0);
+ /*..falling..*/
+#endif
+
+ case STATE_RECV_WRQ:
+ case STATE_DATA:
+ xp = pkt;
+ s = (ushort *)pkt;
+ s[0] = htons(TFTP_ACK);
+ s[1] = htons(TftpBlock);
+ pkt = (uchar *)(s + 2);
+#ifdef CONFIG_CMD_TFTPPUT
+ if (TftpWriting) {
+ int toload = TftpBlkSize;
+ int loaded = load_block(TftpBlock, pkt, toload);
+
+ s[0] = htons(TFTP_DATA);
+ pkt += loaded;
+ TftpFinalBlock = (loaded < toload);
+ }
+#endif
+ len = pkt - xp;
+ break;
+
+ case STATE_TOO_LARGE:
+ xp = pkt;
+ s = (ushort *)pkt;
+ *s++ = htons(TFTP_ERROR);
+ *s++ = htons(3);
+
+ pkt = (uchar *)s;
+ strcpy((char *)pkt, "File too large");
+ pkt += 14 /*strlen("File too large")*/ + 1;
+ len = pkt - xp;
+ break;
+
+ case STATE_BAD_MAGIC:
+ xp = pkt;
+ s = (ushort *)pkt;
+ *s++ = htons(TFTP_ERROR);
+ *s++ = htons(2);
+ pkt = (uchar *)s;
+ strcpy((char *)pkt, "File has bad magic");
+ pkt += 18 /*strlen("File has bad magic")*/ + 1;
+ len = pkt - xp;
+ break;
+ }
+
+ NetSendUDPPacket(NetServerEther, TftpRemoteIP, TftpRemotePort,
+ TftpOurPort, len);
+}
+
+#ifdef CONFIG_CMD_TFTPPUT
+static void icmp_handler(unsigned type, unsigned code, unsigned dest,
+ IPaddr_t sip, unsigned src, uchar *pkt, unsigned len)
+{
+ if (type == ICMP_NOT_REACH && code == ICMP_NOT_REACH_PORT) {
+ /* Oh dear the other end has gone away */
+ restart("TFTP server died");
+ }
+}
+#endif
+
+static void
+TftpHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src,
+ unsigned len)
+{
+ __be16 proto;
+ __be16 *s;
+ int i;
+
+ if (dest != TftpOurPort) {
+#ifdef CONFIG_MCAST_TFTP
+ if (Multicast
+ && (!Mcast_port || (dest != Mcast_port)))
+#endif
+ return;
+ }
+ if (TftpState != STATE_SEND_RRQ && src != TftpRemotePort &&
+ TftpState != STATE_RECV_WRQ && TftpState != STATE_SEND_WRQ)
+ return;
+
+ if (len < 2)
+ return;
+ len -= 2;
+ /* warning: don't use increment (++) in ntohs() macros!! */
+ s = (__be16 *)pkt;
+ proto = *s++;
+ pkt = (uchar *)s;
+ switch (ntohs(proto)) {
+
+ case TFTP_RRQ:
+ break;
+
+ case TFTP_ACK:
+#ifdef CONFIG_CMD_TFTPPUT
+ if (TftpWriting) {
+ if (TftpFinalBlock) {
+ tftp_complete();
+ } else {
+ /*
+ * Move to the next block. We want our block
+ * count to wrap just like the other end!
+ */
+ int block = ntohs(*s);
+ int ack_ok = (TftpBlock == block);
+
+ TftpBlock = (unsigned short)(block + 1);
+ update_block_number();
+ if (ack_ok)
+ TftpSend(); /* Send next data block */
+ }
+ }
+#endif
+ break;
+
+ default:
+ break;
+
+#ifdef CONFIG_CMD_TFTPSRV
+ case TFTP_WRQ:
+ debug("Got WRQ\n");
+ TftpRemoteIP = sip;
+ TftpRemotePort = src;
+ TftpOurPort = 1024 + (get_timer(0) % 3072);
+ new_transfer();
+ TftpSend(); /* Send ACK(0) */
+ break;
+#endif
+
+ case TFTP_OACK:
+ debug("Got OACK: %s %s\n",
+ pkt,
+ pkt + strlen((char *)pkt) + 1);
+ TftpState = STATE_OACK;
+ TftpRemotePort = src;
+ /*
+ * Check for 'blksize' option.
+ * Careful: "i" is signed, "len" is unsigned, thus
+ * something like "len-8" may give a *huge* number
+ */
+ for (i = 0; i+8 < len; i++) {
+ if (strcmp((char *)pkt+i, "blksize") == 0) {
+ TftpBlkSize = (unsigned short)
+ simple_strtoul((char *)pkt+i+8, NULL,
+ 10);
+ debug("Blocksize ack: %s, %d\n",
+ (char *)pkt+i+8, TftpBlkSize);
+ }
+#ifdef CONFIG_TFTP_TSIZE
+ if (strcmp((char *)pkt+i, "tsize") == 0) {
+ TftpTsize = simple_strtoul((char *)pkt+i+6,
+ NULL, 10);
+ debug("size = %s, %d\n",
+ (char *)pkt+i+6, TftpTsize);
+ }
+#endif
+ }
+#ifdef CONFIG_MCAST_TFTP
+ parse_multicast_oack((char *)pkt, len-1);
+ if ((Multicast) && (!MasterClient))
+ TftpState = STATE_DATA; /* passive.. */
+ else
+#endif
+#ifdef CONFIG_CMD_TFTPPUT
+ if (TftpWriting) {
+ /* Get ready to send the first block */
+ TftpState = STATE_DATA;
+ TftpBlock++;
+ }
+#endif
+ TftpSend(); /* Send ACK or first data block */
+ break;
+ case TFTP_DATA:
+ if (len < 2)
+ return;
+ len -= 2;
+ TftpBlock = ntohs(*(__be16 *)pkt);
+
+ update_block_number();
+
+ if (TftpState == STATE_SEND_RRQ)
+ debug("Server did not acknowledge timeout option!\n");
+
+ if (TftpState == STATE_SEND_RRQ || TftpState == STATE_OACK ||
+ TftpState == STATE_RECV_WRQ) {
+ /* first block received */
+ TftpState = STATE_DATA;
+ TftpRemotePort = src;
+ new_transfer();
+
+#ifdef CONFIG_MCAST_TFTP
+ if (Multicast) { /* start!=1 common if mcast */
+ TftpLastBlock = TftpBlock - 1;
+ } else
+#endif
+ if (TftpBlock != 1) { /* Assertion */
+ printf("\nTFTP error: "
+ "First block is not block 1 (%ld)\n"
+ "Starting again\n\n",
+ TftpBlock);
+ NetStartAgain();
+ break;
+ }
+ }
+
+ if (TftpBlock == TftpLastBlock) {
+ /*
+ * Same block again; ignore it.
+ */
+ break;
+ }
+
+ TftpLastBlock = TftpBlock;
+ TftpTimeoutCountMax = TIMEOUT_COUNT;
+ NetSetTimeout(TftpTimeoutMSecs, TftpTimeout);
+
+ store_block(TftpBlock - 1, pkt + 2, len);
+
+ /*
+ * Acknowledge the block just received, which will prompt
+ * the remote for the next one.
+ */
+#ifdef CONFIG_MCAST_TFTP
+ /* if I am the MasterClient, actively calculate what my next
+ * needed block is; else I'm passive; not ACKING
+ */
+ if (Multicast) {
+ if (len < TftpBlkSize) {
+ TftpEndingBlock = TftpBlock;
+ } else if (MasterClient) {
+ TftpBlock = PrevBitmapHole =
+ ext2_find_next_zero_bit(
+ Bitmap,
+ (Mapsize*8),
+ PrevBitmapHole);
+ if (TftpBlock > ((Mapsize*8) - 1)) {
+ printf("tftpfile too big\n");
+ /* try to double it and retry */
+ Mapsize <<= 1;
+ mcast_cleanup();
+ NetStartAgain();
+ return;
+ }
+ TftpLastBlock = TftpBlock;
+ }
+ }
+#endif
+ TftpSend();
+
+#ifdef CONFIG_MCAST_TFTP
+ if (Multicast) {
+ if (MasterClient && (TftpBlock >= TftpEndingBlock)) {
+ puts("\nMulticast tftp done\n");
+ mcast_cleanup();
+ net_set_state(NETLOOP_SUCCESS);
+ }
+ } else
+#endif
+ if (len < TftpBlkSize)
+ tftp_complete();
+ break;
+
+ case TFTP_ERROR:
+ printf("\nTFTP error: '%s' (%d)\n",
+ pkt + 2, ntohs(*(__be16 *)pkt));
+
+ switch (ntohs(*(__be16 *)pkt)) {
+ case TFTP_ERR_FILE_NOT_FOUND:
+ case TFTP_ERR_ACCESS_DENIED:
+ puts("Not retrying...\n");
+ eth_halt();
+ net_set_state(NETLOOP_FAIL);
+ break;
+ case TFTP_ERR_UNDEFINED:
+ case TFTP_ERR_DISK_FULL:
+ case TFTP_ERR_UNEXPECTED_OPCODE:
+ case TFTP_ERR_UNKNOWN_TRANSFER_ID:
+ case TFTP_ERR_FILE_ALREADY_EXISTS:
+ default:
+ puts("Starting again\n\n");
+#ifdef CONFIG_MCAST_TFTP
+ mcast_cleanup();
+#endif
+ NetStartAgain();
+ break;
+ }
+ break;
+ }
+}
+
+
+static void
+TftpTimeout(void)
+{
+ if (++TftpTimeoutCount > TftpTimeoutCountMax) {
+ restart("Retry count exceeded");
+ } else {
+ puts("T ");
+ NetSetTimeout(TftpTimeoutMSecs, TftpTimeout);
+ if (TftpState != STATE_RECV_WRQ)
+ TftpSend();
+ }
+}
+
+
+void TftpStart(enum proto_t protocol)
+{
+ char *ep; /* Environment pointer */
+
+ /*
+ * Allow the user to choose TFTP blocksize and timeout.
+ * TFTP protocol has a minimal timeout of 1 second.
+ */
+ ep = getenv("tftpblocksize");
+ if (ep != NULL)
+ TftpBlkSizeOption = simple_strtol(ep, NULL, 10);
+
+ ep = getenv("tftptimeout");
+ if (ep != NULL)
+ TftpTimeoutMSecs = simple_strtol(ep, NULL, 10);
+
+ if (TftpTimeoutMSecs < 1000) {
+ printf("TFTP timeout (%ld ms) too low, "
+ "set minimum = 1000 ms\n",
+ TftpTimeoutMSecs);
+ TftpTimeoutMSecs = 1000;
+ }
+
+ debug("TFTP blocksize = %i, timeout = %ld ms\n",
+ TftpBlkSizeOption, TftpTimeoutMSecs);
+
+ TftpRemoteIP = NetServerIP;
+ if (BootFile[0] == '\0') {
+ sprintf(default_filename, "%02X%02X%02X%02X.img",
+ NetOurIP & 0xFF,
+ (NetOurIP >> 8) & 0xFF,
+ (NetOurIP >> 16) & 0xFF,
+ (NetOurIP >> 24) & 0xFF);
+
+ strncpy(tftp_filename, default_filename, MAX_LEN);
+ tftp_filename[MAX_LEN-1] = 0;
+
+ printf("*** Warning: no boot file name; using '%s'\n",
+ tftp_filename);
+ } else {
+ char *p = strchr(BootFile, ':');
+
+ if (p == NULL) {
+ strncpy(tftp_filename, BootFile, MAX_LEN);
+ tftp_filename[MAX_LEN-1] = 0;
+ } else {
+ TftpRemoteIP = string_to_ip(BootFile);
+ strncpy(tftp_filename, p + 1, MAX_LEN);
+ tftp_filename[MAX_LEN-1] = 0;
+ }
+ }
+
+ printf("Using %s device\n", eth_get_name());
+ printf("TFTP %s server %pI4; our IP address is %pI4",
+#ifdef CONFIG_CMD_TFTPPUT
+ protocol == TFTPPUT ? "to" : "from",
+#else
+ "from",
+#endif
+ &TftpRemoteIP, &NetOurIP);
+
+ /* Check if we need to send across this subnet */
+ if (NetOurGatewayIP && NetOurSubnetMask) {
+ IPaddr_t OurNet = NetOurIP & NetOurSubnetMask;
+ IPaddr_t RemoteNet = TftpRemoteIP & NetOurSubnetMask;
+
+ if (OurNet != RemoteNet)
+ printf("; sending through gateway %pI4",
+ &NetOurGatewayIP);
+ }
+ putc('\n');
+
+ printf("Filename '%s'.", tftp_filename);
+
+ if (NetBootFileSize) {
+ printf(" Size is 0x%x Bytes = ", NetBootFileSize<<9);
+ print_size(NetBootFileSize<<9, "");
+ }
+
+ putc('\n');
+#ifdef CONFIG_CMD_TFTPPUT
+ TftpWriting = (protocol == TFTPPUT);
+ if (TftpWriting) {
+ printf("Save address: 0x%lx\n", save_addr);
+ printf("Save size: 0x%lx\n", save_size);
+ NetBootFileXferSize = save_size;
+ puts("Saving: *\b");
+ TftpState = STATE_SEND_WRQ;
+ new_transfer();
+ } else
+#endif
+ {
+ printf("Load address: 0x%lx\n", load_addr);
+ puts("Loading: *\b");
+ TftpState = STATE_SEND_RRQ;
+ }
+
+ time_start = get_timer(0);
+ TftpTimeoutCountMax = TftpRRQTimeoutCountMax;
+
+ NetSetTimeout(TftpTimeoutMSecs, TftpTimeout);
+ net_set_udp_handler(TftpHandler);
+#ifdef CONFIG_CMD_TFTPPUT
+ net_set_icmp_handler(icmp_handler);
+#endif
+ TftpRemotePort = WELL_KNOWN_PORT;
+ TftpTimeoutCount = 0;
+ /* Use a pseudo-random port unless a specific port is set */
+ TftpOurPort = 1024 + (get_timer(0) % 3072);
+
+#ifdef CONFIG_TFTP_PORT
+ ep = getenv("tftpdstp");
+ if (ep != NULL)
+ TftpRemotePort = simple_strtol(ep, NULL, 10);
+ ep = getenv("tftpsrcp");
+ if (ep != NULL)
+ TftpOurPort = simple_strtol(ep, NULL, 10);
+#endif
+ TftpBlock = 0;
+
+ /* zero out server ether in case the server ip has changed */
+ memset(NetServerEther, 0, 6);
+ /* Revert TftpBlkSize to dflt */
+ TftpBlkSize = TFTP_BLOCK_SIZE;
+#ifdef CONFIG_MCAST_TFTP
+ mcast_cleanup();
+#endif
+#ifdef CONFIG_TFTP_TSIZE
+ TftpTsize = 0;
+ TftpNumchars = 0;
+#endif
+
+ TftpSend();
+}
+
+#ifdef CONFIG_CMD_TFTPSRV
+void
+TftpStartServer(void)
+{
+ tftp_filename[0] = 0;
+
+ printf("Using %s device\n", eth_get_name());
+ printf("Listening for TFTP transfer on %pI4\n", &NetOurIP);
+ printf("Load address: 0x%lx\n", load_addr);
+
+ puts("Loading: *\b");
+
+ TftpTimeoutCountMax = TIMEOUT_COUNT;
+ TftpTimeoutCount = 0;
+ TftpTimeoutMSecs = TIMEOUT;
+ NetSetTimeout(TftpTimeoutMSecs, TftpTimeout);
+
+ /* Revert TftpBlkSize to dflt */
+ TftpBlkSize = TFTP_BLOCK_SIZE;
+ TftpBlock = 0;
+ TftpOurPort = WELL_KNOWN_PORT;
+
+#ifdef CONFIG_TFTP_TSIZE
+ TftpTsize = 0;
+ TftpNumchars = 0;
+#endif
+
+ TftpState = STATE_RECV_WRQ;
+ net_set_udp_handler(TftpHandler);
+
+ /* zero out server ether in case the server ip has changed */
+ memset(NetServerEther, 0, 6);
+}
+#endif /* CONFIG_CMD_TFTPSRV */
+
+#ifdef CONFIG_MCAST_TFTP
+/* Credits: atftp project.
+ */
+
+/* pick up BcastAddr, Port, and whether I am [now] the master-client. *
+ * Frame:
+ * +-------+-----------+---+-------~~-------+---+
+ * | opc | multicast | 0 | addr, port, mc | 0 |
+ * +-------+-----------+---+-------~~-------+---+
+ * The multicast addr/port becomes what I listen to, and if 'mc' is '1' then
+ * I am the new master-client so must send ACKs to DataBlocks. If I am not
+ * master-client, I'm a passive client, gathering what DataBlocks I may and
+ * making note of which ones I got in my bitmask.
+ * In theory, I never go from master->passive..
+ * .. this comes in with pkt already pointing just past opc
+ */
+static void parse_multicast_oack(char *pkt, int len)
+{
+ int i;
+ IPaddr_t addr;
+ char *mc_adr, *port, *mc;
+
+ mc_adr = port = mc = NULL;
+ /* march along looking for 'multicast\0', which has to start at least
+ * 14 bytes back from the end.
+ */
+ for (i = 0; i < len-14; i++)
+ if (strcmp(pkt+i, "multicast") == 0)
+ break;
+ if (i >= (len-14)) /* non-Multicast OACK, ign. */
+ return;
+
+ i += 10; /* strlen multicast */
+ mc_adr = pkt+i;
+ for (; i < len; i++) {
+ if (*(pkt+i) == ',') {
+ *(pkt+i) = '\0';
+ if (port) {
+ mc = pkt+i+1;
+ break;
+ } else {
+ port = pkt+i+1;
+ }
+ }
+ }
+ if (!port || !mc_adr || !mc)
+ return;
+ if (Multicast && MasterClient) {
+ printf("I got a OACK as master Client, WRONG!\n");
+ return;
+ }
+ /* ..I now accept packets destined for this MCAST addr, port */
+ if (!Multicast) {
+ if (Bitmap) {
+ printf("Internal failure! no mcast.\n");
+ free(Bitmap);
+ Bitmap = NULL;
+ ProhibitMcast = 1;
+ return ;
+ }
+ /* I malloc instead of pre-declare; so that if the file ends
+ * up being too big for this bitmap I can retry
+ */
+ Bitmap = malloc(Mapsize);
+ if (!Bitmap) {
+ printf("No Bitmap, no multicast. Sorry.\n");
+ ProhibitMcast = 1;
+ return;
+ }
+ memset(Bitmap, 0, Mapsize);
+ PrevBitmapHole = 0;
+ Multicast = 1;
+ }
+ addr = string_to_ip(mc_adr);
+ if (Mcast_addr != addr) {
+ if (Mcast_addr)
+ eth_mcast_join(Mcast_addr, 0);
+ Mcast_addr = addr;
+ if (eth_mcast_join(Mcast_addr, 1)) {
+ printf("Fail to set mcast, revert to TFTP\n");
+ ProhibitMcast = 1;
+ mcast_cleanup();
+ NetStartAgain();
+ }
+ }
+ MasterClient = (unsigned char)simple_strtoul((char *)mc, NULL, 10);
+ Mcast_port = (unsigned short)simple_strtoul(port, NULL, 10);
+ printf("Multicast: %s:%d [%d]\n", mc_adr, Mcast_port, MasterClient);
+ return;
+}
+
+#endif /* Multicast TFTP */
Code Review / kvmfornfv.git / blobdiff