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From: Stefano Brivio <sbrivio@redhat.com>
To: David Gibson <david@gibson.dropbear.id.au>
Cc: passt-dev@passt.top, lvivier@redhat.com
Subject: Re: [PATCH v4 0/8] Draft, incomplete series introducing state migration
Date: Tue, 4 Feb 2025 07:48:57 +0100	[thread overview]
Message-ID: <20250204074857.59674903@elisabeth> (raw)
In-Reply-To: <Z6GtIHHGitkaqhjW@zatzit>

On Tue, 4 Feb 2025 17:01:04 +1100
David Gibson <david@gibson.dropbear.id.au> wrote:

> With the hacky workaround, the connect() now success, but I still
> couldn't send data from the target.  From strace, the target side
> passt doesn't seem to be attempting doing any writes to the socket,
> but I'm not sure why yet.  pcap on the target side does show some
> packets on the stream coming from the guest, although it's only one
> byte (0x0a) and I thought I'd typed 5ish.  It then appears to
> retransmit several times without getting an ack from passt.

It looks like an issue with the window, I had something similar
before it occurred to me that I had to set the window scaling. Perhaps
my hardcoded value isn't good enough, after all. Can you share the pcap?

-- 
Stefano


      reply	other threads:[~2025-02-04  6:49 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-04  0:47 [PATCH v4 0/8] Draft, incomplete series introducing state migration Stefano Brivio
2025-02-04  0:47 ` [PATCH v4 1/8] flow_table: Use size in extern declaration for flowtab, export hash table Stefano Brivio
2025-02-04  0:47 ` [PATCH v4 2/8] Introduce facilities for guest migration on top of vhost-user infrastructure Stefano Brivio
2025-02-04  0:47 ` [PATCH v4 3/8] migrate: Make more handling common rather than vhost-user specific Stefano Brivio
2025-02-04  0:47 ` [PATCH v4 4/8] migrate: Don't handle the migration channel through epoll Stefano Brivio
2025-02-04  0:47 ` [PATCH v4 5/8] Add interfaces and configuration bits for passt-repair Stefano Brivio
2025-02-04  0:47 ` [PATCH v4 6/8] flow, tcp: Basic pre-migration source handler to dump sequence numbers Stefano Brivio
2025-02-04  3:43   ` David Gibson
2025-02-04  6:44     ` Stefano Brivio
2025-02-05  0:58       ` David Gibson
2025-02-04  0:47 ` [PATCH v4 7/8] vhost_user: Make source quit after reporting migration state Stefano Brivio
2025-02-04  0:47 ` [PATCH v4 8/8] Implement target side of migration Stefano Brivio
2025-02-04  6:01 ` [PATCH v4 0/8] Draft, incomplete series introducing state migration David Gibson
2025-02-04  6:48   ` Stefano Brivio [this message]

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