From: Stefan Hajnoczi <stefanha@redhat.com>
To: "Jiang Wang ." <jiang.wang@bytedance.com>
Cc: cong.wang@bytedance.com,
Xiongchun Duan <duanxiongchun@bytedance.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
cohuck@redhat.com, virtualization@lists.linux-foundation.org,
xieyongji@bytedance.com,
Arseny Krasnov <arseny.krasnov@kaspersky.com>,
asias@redhat.com
Subject: Re: [External] Re: [RFC PATCH] virtio-vsock: add description for datagram type
Date: Tue, 23 Mar 2021 08:53:03 +0000 [thread overview]
Message-ID: <YFmsb6o82KOSml9u@stefanha-x1.localdomain> (raw)
In-Reply-To: <CAP_N_Z_g1jgQE71WLPA45w72WJ8+1WFaP3zzXH8FRpFap=jqCA@mail.gmail.com>
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On Mon, Mar 22, 2021 at 07:23:14PM -0700, Jiang Wang . wrote:
> Got it. Will do.
You could look at udp_sendmsg() to see how sockets compete when
transmitting to the same net device.
I'm not very familiar with this but I guess that the qdisc (like
fq_codel) decides which packets to place into the device's tx queue. I
guess sk_buffs waiting to be put onto the device's tx queue are
accounted for against the socket's sndbuf. Further sendmsg calls will
fail with -ENOBUFS when the sndbuf limit is reached.
It's not clear to me how much of the existing code can be reused since
vsock does not use sk_buff or netdev :(.
Stefan
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next prev parent reply other threads:[~2021-03-23 8:53 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-16 21:56 [RFC PATCH] virtio-vsock: add description for datagram type jiang.wang
2021-03-17 15:44 ` Stefan Hajnoczi
2021-03-18 17:59 ` [External] " Jiang Wang .
2021-03-22 16:50 ` Stefan Hajnoczi
2021-03-22 23:02 ` Jiang Wang .
2021-03-22 23:10 ` Michael S. Tsirkin
2021-03-23 2:23 ` Jiang Wang .
2021-03-23 8:53 ` Stefan Hajnoczi [this message]
2021-03-26 23:40 ` Jiang Wang .
2021-03-29 9:25 ` Stefan Hajnoczi
2021-03-29 23:22 ` Jiang Wang .
2021-03-30 10:42 ` Stefan Hajnoczi
2021-03-30 18:30 ` Jiang Wang .
2021-03-30 15:32 ` Stefano Garzarella
2021-03-30 18:34 ` Jiang Wang .
2021-03-31 1:02 ` Jiang Wang .
2021-03-31 6:42 ` Stefano Garzarella
[not found] ` <CAA68J_bQHzFXnsLpCqZ3waPW1NGz+hnu2OXfAG4XOLemLOX9DQ@mail.gmail.com>
2021-04-26 16:07 ` Stefan Hajnoczi
[not found] ` <CAA68J_Z=1uf5rLCpQeH+m9YmsYGsbJgf2VtRJjQrBd_jTdUYuA@mail.gmail.com>
2021-05-13 16:04 ` Stefan Hajnoczi
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