Displaying 3 results from an estimated 3 matches for "iob_push".
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2015 Apr 08
1
syslinux.efi with QEMU/OVMF
...mentation under core/lwip/, which doesn't support TCP timestamps.
>
> Whereas syslinux.efi apparently uses the embedded gpxe/ tree, and that
> one uses TCP timestamps. See tcp_xmit() in gpxe/src/net/tcp.c:
>
> if ( ( flags & TCP_SYN ) || tcp->timestamps ) {
> tsopt = iob_push ( iobuf, sizeof ( *tsopt ) );
> memset ( tsopt->nop, TCP_OPTION_NOP, sizeof ( tsopt->nop ) );
> tsopt->tsopt.kind = TCP_OPTION_TS;
> tsopt->tsopt.length = sizeof ( tsopt->tsopt );
> tsopt->tsopt.tsval = ntohl ( currticks() );
> tsopt->tsopt.tsecr = ntoh...
2015 Apr 07
3
syslinux.efi with QEMU/OVMF
Hello,
I'm trying to find out how to pxe boot with syslinux.efi on QEMU with
OVMF. After getting through the initial hurdle caused by the iPXE based
option ROM included with QEMU having a problem as described in these
threads:
http://www.syslinux.org/archives/2014-November/022804.html
http://sourceforge.net/p/edk2/mailman/message/33236100/
I'm now getting further to almost being able
2015 Apr 07
0
syslinux.efi with QEMU/OVMF
...xelinux.0 uses the TCP
implementation under core/lwip/, which doesn't support TCP timestamps.
Whereas syslinux.efi apparently uses the embedded gpxe/ tree, and that
one uses TCP timestamps. See tcp_xmit() in gpxe/src/net/tcp.c:
if ( ( flags & TCP_SYN ) || tcp->timestamps ) {
tsopt = iob_push ( iobuf, sizeof ( *tsopt ) );
memset ( tsopt->nop, TCP_OPTION_NOP, sizeof ( tsopt->nop ) );
tsopt->tsopt.kind = TCP_OPTION_TS;
tsopt->tsopt.length = sizeof ( tsopt->tsopt );
tsopt->tsopt.tsval = ntohl ( currticks() );
tsopt->tsopt.tsecr = ntohl ( tcp->ts_recent );...