On Wed, 28 Aug 2013 20:30:17 +0900 Yoshihiro YUNOMAE <[email protected]> wrote:
> (2013/08/27 22:05), Steven Rostedt wrote: > > On Tue, 27 Aug 2013 19:23:24 +0900 > > Yoshihiro YUNOMAE <[email protected]> wrote: > > > >> OK, let me check that. Even if the old server will receive "V2", the > >> server will send port numbers instead of "V2" due to the old protocol. > >> In that time, the new client will disconnect from the old server and > >> the restarts with the old protocol. Is it OK? > > > > Yep, that's exactly what I meant ;-) > > I tried to implement the feature, but I found that sending just "V2" > from the new client is inappropriate. This is because the old server > doesn't respond to the client before receiving cpu numbers, page size, > and options. So, when the new client sends the first message, it should > send "V2\0<MAGIC_NUMBER>\00\0", I think. If so, the old server will > understand the message as cpus=0, pagesize=<MAGIC_NUMBER>, options=0, > and then it will send port numbers(actually \0). Note if <MAGIC_NUMBER> > is zero, the old server will die. > > Can I implement the first message of the new client as > "V2\0<MAGIC_NUMBER>\00\0"? > If it works for both old and new server with old and new client (and all combinations) I'm fine with it. Thanks, -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
