Displaying 3 results from an estimated 3 matches for "tcp_option_t".
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tcp_option_ts
2015 Apr 08
1
syslinux.efi with QEMU/OVMF
...d 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 );
> }
>
> (When opening the connection, the TCP_SYN flag is set (from tcp_open() I
> guess?).)
>
> So, the...
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
...s 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 );
}
(When opening the connection, the TCP_SYN flag is set (from tcp_open() I
guess?).)
So, the two builds use different TCP stacks on the...