linux-kernel - Re: [PATCH v6 11/18] xen/pvcalls: implement accept command

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Date:   Tue, 4 Jul 2017 09:26:45 +0200
From:   Juergen Gross <jgross@...e.com>
To:     Stefano Stabellini <sstabellini@...nel.org>,
        xen-devel@...ts.xen.org
Cc:     linux-kernel@...r.kernel.org, boris.ostrovsky@...cle.com,
        Stefano Stabellini <stefano@...reto.com>
Subject: Re: [PATCH v6 11/18] xen/pvcalls: implement accept command

On 03/07/17 23:08, Stefano Stabellini wrote:
> Implement the accept command by calling inet_accept. To avoid blocking
> in the kernel, call inet_accept(O_NONBLOCK) from a workqueue, which get
> scheduled on sk_data_ready (for a passive socket, it means that there
> are connections to accept).
> 
> Use the reqcopy field to store the request. Accept the new socket from
> the delayed work function, create a new sock_mapping for it, map
> the indexes page and data ring, and reply to the other end. Allocate an
> ioworker for the socket.
> 
> Only support one outstanding blocking accept request for every socket at
> any time.
> 
> Add a field to sock_mapping to remember the passive socket from which an
> active socket was created.
> 
> Signed-off-by: Stefano Stabellini <stefano@...reto.com>

Reviewed-by: Juergen Gross <jgross@...e.com>


Thanks,

Juergen