search for: oack

Hello! I recently started testing curl's tftp options, and found that it crashed when trying to upload files using tftp because it didn't handle OACK properly. So, I'm attempting to fix it. Now, I have an endless loop: The client (my hacked curl) sends TFTP write request with options, server responds with OACK (tsize, blksize) client sends data packet, block 0 BUT: server responds again with OACK These last two steps happen over and over...

After the PXE PROM code downloads and runs the pxelinux.0 image and it tries to download config information the client stops acknowledging the server OACK packets from the server. pxelinux from syslinux 3.11 from Fedora RPM, accessing Solaris 10 in.tftpd The tftp client in pxelinux.0 sends a tftp file read request with extended options tsize \00 0 \00 blksize \00 1440 \00 and then the server responds with opcode 6 (as per RFC 2347) and tsize \00...

I'm trying to network-boot a GCT Allwell set-top box without success. My frustration level is high. The problem seems to be that the Allwell is sending a RRQ with an option. tftp-hpa responds with an OACK, and waits for the corresponding ACK from the Allwell. The Allwell never sends that ACK, but instead continues with the same RRQ until timeout. Having read RFC1782, this makes me think the TFTP client in the Allwell is broken. Ack! Ack ack ack ack ack. Ack, thpppht. What do I do? The packets...

The current code only works iff the tsize option is set. This patch fixes the handling of the OACK packet and makes the code work with all combinations of the tsize and blksize options. Signed-off-by: Sebastian Herbszt <herbszt at gmx.de> diff --git a/core/pxe.c b/core/pxe.c index 81d3e23..a4b8a14 100644 --- a/core/pxe.c +++ b/core/pxe.c @@ -913,8 +913,10 @@ static void pxe_searchdir(cha...

I forgot tftp32 log. Here it is, starting from "default" file request: Connection received from 192.168.1.20 on port 57099 [31/05 10:51: 29.370] Read request for file <pxelinux.cfg/default>. Mode octet [31/05 10:51:29.370] OACK: <tsize=938,> [31/05 10:51:29.420] Using local port 1286 [31/05 10:51:29.420] Connection received from 192.168.1.20 on port 57100 [31/05 10:51:29.420] <pxelinux.cfg\default>: sent 2 blks, 938 bytes in 0 s. 0 blk resent [31/05 10:51:29.420] Read request for file <menu.c32>. Mod...

the current code can just handle one option beacuse I put the do-while loop in the wrong position. Signed-off-by: Liu Aleaxander <Aleaxander at gmail.com> --- core/pxe.c | 26 +++++++++++++------------- 1 files changed, 13 insertions(+), 13 deletions(-) diff --git a/core/pxe.c b/core/pxe.c index 81d3e23..bda1a54 100644 --- a/core/pxe.c +++ b/core/pxe.c @@ -928,20 +928,20 @@ static void

...: 24:46.429] File <pxelinux.cfg\C> : error 2 in system call CreateFile Impossibile trovare il file specificato. [05/06 18:24:46.429] Connection received from 192.168.1.20 on port 57099 [05/06 18:24: 46.429] Read request for file <pxelinux.cfg/default>. Mode octet [05/06 18:24:46.429] OACK: <tsize=938,> [05/06 18:24:46.439] Using local port 1241 [05/06 18:24:46.439] <pxelinux.cfg\default>: sent 2 blks, 938 bytes in 0 s. 0 blk resent [05/06 18:24:46.489] Connection received from 192.168.1.20 on port 57100 [05/06 18:24:46.489] Read request for file <menu.c32>. Mod...

Gene, Where did you find the precompiled binaries for syslinux 6.03-pre7? Actually, I'm interested in the pre-compiled binaries for syslinux 6.03-pre6. I went out to kernel.org, but the latest they have is 6.02. Which appears to have an endian problem in its TFTP client code (when syslinux.efi tries to connect to the TFTP server, attempts to connect to UDP port 17664 instead of 69).

H Peter, I notice the Intel Boot Agent (in the BOOT ROM) takes a different approach. When TFTP loading the initial syslinux.efi. It receives the OACK with both options set -- tsize (of 145744) and blksize (of 1408). Apparently it has challenges parsing this "two option" OACK packet. But it remembers the tsize of 145744. So it issues another read request, this time requesting only a blksize option. Then it gets back an OACK with onl...

I'm going to push out a Syslinux 3.82 later today unless someone yells... -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.

Still interested in pre-compiled binaries for 6.03-pre6. But my comment about 6.02 TFTP brokenness may speak more to my lack of understanding of the TFTP protocol than to any pxelinux 6.02 code problems. It seems that when TFTP sends an OACK back to syslinux.efi, it sends it from another port than 69. So, it seems to be opening a data connection back to the TFTP client off an ephemeral port. Very similar to what FTP does, using the FTP DATA port to send back data. I did not understand that. Based on that, it's natural for pxeli...

Hi, We have been using PXELinux 2.0 for a few weeks now. So far so good, but recently we found out that newer 3com network cards with PXE2.2 wont boot. When flash these cards with an older PXE2.0 than everything works okay. Anyone else having this problem? Vincent

...?. ? ????? ??????? ???: ------------------------------------------------------------------------- Connection received from 172.15.207.71 on port 57102 [08/10 14:53:07.181] Read request for file <MEMTEST.> Mode octet [08/10 14:53:07.191] OACK: <tsize=111864,> [08/10 14:53:07.191] Using local port 2751 [08/10 14:53:07.191] ------------------------------------------------------------------------- ? ???????????? ??? ????????? Tftpd32 ? ??? ?????? pxelinux. ???????? ??? ????? ?? ????????. ??...

Hi, I've been looking at the pxelinux code and I was wondering a couple of things: 1) Why does pxelinux create UDP packets from scratch instead of use the Intel PXE TFTP OPEN/CLOSE/READ calls? I'm assuming this is to support TFTP options like tsize right? Did earlier versions of pxelinux use the TFTP calls directly? 2) How big of an image can pxelinux download (minus memory

Hi, The tftpd can not handle a request with the multicast option set. If the request has additional options eg. blksize, all options are discarded and a oack is newer sent. The client works fine with the atftpd server. I am not after an implementation of the multicast feature. However, the server should not discard the other options. Any thoughts about this? Regards, Robin Theander. -- ASIC Design Engineer Tellabs Denmark A/S Direct: +45 4473 2...

Uploading a >32MB file from a recent curl to tftpd fails because when the block number rolls back to 0, tftpd transmits the option ack again, instead of transmitting an acknowledgment for the block received. You don't see this problem when using the bundled tftp client because it doesn't set any of the options when uploading a file. Attached is a patch that fixes this, tested against

...Not defined, see error message (if any). 1 File not found. 2 Access violation. 3 Disk full or allocation exceeded. 4 Illegal TFTP operation. 5 Unknown transfer ID. 6 File already exists. 7 No such user. and 8 ("OACK failure") from RFC 1782. I am not sure which ones are relevant for pxelinux. Maybe just map them to EIO. Sebastian

Gene and co, Now my pxelinux efi 64 boot is properly loading syslinux.efi (via TFTP) It then issues a TFTP file request for efi.x64/pxelinux.cfg/ldlinux.e64. (All my efi x64 content is under efi.x64/pxelinux.cfg). However, I see that it fails to properly negotiate the TFTP options with my TFTP server. so it never transfers ldlinux.e64 over. In its file request packet, it asks for these TFTP

...UX: deal with systems which return from INT 13h with interrupts disabled. * Do not invoke the idle handler during large file loads. * Simple menu: make ONTIMEOUT work with MENU HIDDEN. * PXELINUX: handle TFTP servers which have extra NULs at the end of an OACK packet. Changes in 3.81: * Shuffler: fix bug in real-mode entry. This affected a number of modules, probably in relatively unimportant ways, but it completely broke linux.c32. * Improved performance. * Attempt to halt the processor while idle. This can...

Hi, Using syslinux 3.80, I'm seeing pxelinux.bin hanging after the (succesfull) transfer of the default file. Running a lan trace, it appears that all goes fine until the time pxelinux sends a TFTP RRQ for menu.c32 to the TFTP server, gets the first data packet back, and apparently freezes at this point. The TFTP server then times out and retries (3 times) then finally sends an error packet