netdev - Re: [PATCH net-next v6 5/8] virtio_net: add the total stats field

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Message-ID: <1713946914.719213-1-xuanzhuo@linux.alibaba.com>
Date: Wed, 24 Apr 2024 16:21:54 +0800
From: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
To: Jason Wang <jasowang@...hat.com>
Cc: netdev@...r.kernel.org,
 "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>,
 "Michael S. Tsirkin" <mst@...hat.com>,
 Alexei Starovoitov <ast@...nel.org>,
 Daniel Borkmann <daniel@...earbox.net>,
 Jesper Dangaard Brouer <hawk@...nel.org>,
 John Fastabend <john.fastabend@...il.com>,
 Stanislav Fomichev <sdf@...gle.com>,
 Amritha Nambiar <amritha.nambiar@...el.com>,
 Larysa Zaremba <larysa.zaremba@...el.com>,
 Sridhar Samudrala <sridhar.samudrala@...el.com>,
 Maciej Fijalkowski <maciej.fijalkowski@...el.com>,
 virtualization@...ts.linux.dev,
 bpf@...r.kernel.org
Subject: Re: [PATCH net-next v6 5/8] virtio_net: add the total stats field

On Wed, 24 Apr 2024 11:52:12 +0800, Jason Wang <jasowang@...hat.com> wrote:
> On Tue, Apr 23, 2024 at 7:32 PM Xuan Zhuo <xuanzhuo@...ux.alibaba.com> wrote:
> >
> > Now, we just show the stats of every queue.
> >
> > But for the user, the total values of every stat may are valuable.
> >
> > NIC statistics:
> >      rx_packets: 373522
> >      rx_bytes: 85919736
> >      rx_drops: 0
> >      rx_xdp_packets: 0
> >      rx_xdp_tx: 0
> >      rx_xdp_redirects: 0
> >      rx_xdp_drops: 0
> >      rx_kicks: 11125
> >      rx_hw_notifications: 0
> >      rx_hw_packets: 1325870
> >      rx_hw_bytes: 263348963
> >      rx_hw_interrupts: 0
> >      rx_hw_drops: 1451
> >      rx_hw_drop_overruns: 0
> >      rx_hw_csum_valid: 1325870
> >      rx_hw_needs_csum: 1325870
> >      rx_hw_csum_none: 0
> >      rx_hw_csum_bad: 0
> >      rx_hw_ratelimit_packets: 0
> >      rx_hw_ratelimit_bytes: 0
> >      tx_packets: 10050
> >      tx_bytes: 1230176
> >      tx_xdp_tx: 0
> >      tx_xdp_tx_drops: 0
> >      tx_kicks: 10050
> >      tx_timeouts: 0
> >      tx_hw_notifications: 0
> >      tx_hw_packets: 32281
> >      tx_hw_bytes: 4315590
> >      tx_hw_interrupts: 0
> >      tx_hw_drops: 0
> >      tx_hw_drop_malformed: 0
> >      tx_hw_csum_none: 0
> >      tx_hw_needs_csum: 32281
> >      tx_hw_ratelimit_packets: 0
> >      tx_hw_ratelimit_bytes: 0
> >      rx0_packets: 373522
> >      rx0_bytes: 85919736
> >      rx0_drops: 0
> >      rx0_xdp_packets: 0
> >      rx0_xdp_tx: 0
> >      rx0_xdp_redirects: 0
> >      rx0_xdp_drops: 0
> >      rx0_kicks: 11125
> >      rx0_hw_notifications: 0
> >      rx0_hw_packets: 1325870
> >      rx0_hw_bytes: 263348963
> >      rx0_hw_interrupts: 0
> >      rx0_hw_drops: 1451
> >      rx0_hw_drop_overruns: 0
> >      rx0_hw_csum_valid: 1325870
> >      rx0_hw_needs_csum: 1325870
> >      rx0_hw_csum_none: 0
> >      rx0_hw_csum_bad: 0
> >      rx0_hw_ratelimit_packets: 0
> >      rx0_hw_ratelimit_bytes: 0
> >      tx0_packets: 10050
> >      tx0_bytes: 1230176
> >      tx0_xdp_tx: 0
> >      tx0_xdp_tx_drops: 0
> >      tx0_kicks: 10050
> >      tx0_timeouts: 0
> >      tx0_hw_notifications: 0
> >      tx0_hw_packets: 32281
> >      tx0_hw_bytes: 4315590
> >      tx0_hw_interrupts: 0
> >      tx0_hw_drops: 0
> >      tx0_hw_drop_malformed: 0
> >      tx0_hw_csum_none: 0
> >      tx0_hw_needs_csum: 32281
> >      tx0_hw_ratelimit_packets: 0
> >      tx0_hw_ratelimit_bytes: 0
> >
> > Signed-off-by: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
> > ---
> >  drivers/net/virtio_net.c | 81 ++++++++++++++++++++++++++++++++++------
> >  1 file changed, 69 insertions(+), 12 deletions(-)
> >
> > diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> > index 6d24cd8fb15f..8a4d22f5f5b1 100644
> > --- a/drivers/net/virtio_net.c
> > +++ b/drivers/net/virtio_net.c
> > @@ -3344,14 +3344,15 @@ static void virtnet_stats_sprintf(u8 **p, const char *fmt, const char *noq_fmt,
> >         }
> >  }
> >
> > +/* qid == -1: for rx/tx queue total field */
> >  static void virtnet_get_stats_string(struct virtnet_info *vi, int type, int qid, u8 **data)
>
> Nit: -1 for all seems to be a wired API, could we have the caller to
> iterate the possible qid?


Not for all, just the total fields:

      rx_packets: 373522
      rx_bytes: 85919736
      rx_drops: 0
      rx_xdp_packets: 0
      rx_xdp_tx: 0
      rx_xdp_redirects: 0
      rx_xdp_drops: 0
      rx_kicks: 11125
      rx_hw_notifications: 0
      rx_hw_packets: 1325870
      rx_hw_bytes: 263348963
      rx_hw_interrupts: 0
      rx_hw_drops: 1451
      rx_hw_drop_overruns: 0
      rx_hw_csum_valid: 1325870
      rx_hw_needs_csum: 1325870
      rx_hw_csum_none: 0
      rx_hw_csum_bad: 0
      rx_hw_ratelimit_packets: 0
      rx_hw_ratelimit_bytes: 0
      tx_packets: 10050
      tx_bytes: 1230176
      tx_xdp_tx: 0
      tx_xdp_tx_drops: 0
      tx_kicks: 10050
      tx_timeouts: 0
      tx_hw_notifications: 0
      tx_hw_packets: 32281
      tx_hw_bytes: 4315590
      tx_hw_interrupts: 0
      tx_hw_drops: 0
      tx_hw_drop_malformed: 0
      tx_hw_csum_none: 0
      tx_hw_needs_csum: 32281
      tx_hw_ratelimit_packets: 0
      tx_hw_ratelimit_bytes: 0

The field names do not include "qid".

Thanks.


>
> Other parts look good.
>
> Thanks
>