Hi Wolfgang, try two on the patch attached.
* Patch by Jerry Van Baren 10 January 2005 - Add a configuration option CONFIG_TFTP_PORT and optional env variable tftpport to force TFTP to use a fixed UDP port.
gvb
Index: README =================================================================== RCS file: /cvsroot/u-boot/u-boot/README,v retrieving revision 1.117 diff -p -u -r1.117 README --- README 9 Jan 2005 23:16:42 -0000 1.117 +++ README 10 Jan 2005 04:13:50 -0000 @@ -1480,6 +1480,22 @@ The following options need to be configu When SystemACE support is added, the "ace" device type becomes available to the fat commands, i.e. fatls.
+- TFTP Fixed UDP Port: + CONFIG_TFTP_PORT + + If this is defined, the environment variable tftpport + is used to supply the TFTP UDP source port value. + If tftpport isn't defined, the normal pseudo-random port + number generator is used. + + The purpose for this is to allow a TFTP server to + blindly start the TFTP transfer using the pre-configured + target IP address and UDP port. This has the effect of + "punching through" the (Windows XP) firewall, allowing + the remainder of the TFTP transfer to proceed normally. + A better solution is to properly configure the firewall, + but sometimes that is not allowed. + - Show boot progress: CONFIG_SHOW_BOOT_PROGRESS
@@ -2432,6 +2448,9 @@ Some configuration options can be set us Useful on scripts which control the retry operation themselves.
+ tftpport - If this is set, the value is used for TFTP's + UDP source port. + vlan - When set to a value < 4095 the traffic over ethernet is encapsulated/received over 802.1q VLAN tagged frames. Index: net/tftp.c =================================================================== RCS file: /cvsroot/u-boot/u-boot/net/tftp.c,v retrieving revision 1.9 diff -p -u -r1.9 tftp.c --- net/tftp.c 15 Apr 2004 21:48:55 -0000 1.9 +++ net/tftp.c 10 Jan 2005 04:13:51 -0000 @@ -301,6 +301,10 @@ TftpTimeout (void) void TftpStart (void) { +#ifdef CONFIG_TFTP_PORT + char *ep; /* Environment pointer */ +#endif + if (BootFile[0] == '\0') { IPaddr_t OurIP = ntohl(NetOurIP);
@@ -354,7 +358,13 @@ TftpStart (void) TftpServerPort = WELL_KNOWN_PORT; TftpTimeoutCount = 0; TftpState = STATE_RRQ; + /* Use a pseudo-random port unless a specific port is set */ TftpOurPort = 1024 + (get_timer(0) % 3072); +#ifdef CONFIG_TFTP_PORT + if ((ep = getenv("tftpport")) != NULL) { + TftpOurPort= simple_strtol(ep, NULL, 10); + } +#endif TftpBlock = 0;
/* zero out server ether in case the server ip has changed */