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References: <20240207065207.3092004-1-srasheed@marvell.com> <20240207065207.3092004-6-srasheed@marvell.com>
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From: Kalesh Anakkur Purayil <kalesh-anakkur.purayil@broadcom.com>
Date: Wed, 7 Feb 2024 13:39:51 +0530
Message-ID: <CAH-L+nN04MuWS-QOxpPfQMD5iAvdZPFCp0nffuhB43+puLgk_Q@mail.gmail.com>
Subject: Re: [PATCH net-next v6 5/8] octeon_ep_vf: add support for ndo ops
To: Shinas Rasheed <srasheed@marvell.com>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, hgani@marvell.com, 
	vimleshk@marvell.com, sedara@marvell.com, egallen@redhat.com, 
	mschmidt@redhat.com, pabeni@redhat.com, kuba@kernel.org, horms@kernel.org, 
	wizhao@redhat.com, kheib@redhat.com, konguyen@redhat.com, 
	Veerasenareddy Burru <vburru@marvell.com>, Satananda Burla <sburla@marvell.com>, 
	"David S. Miller" <davem@davemloft.net>, Eric Dumazet <edumazet@google.com>
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On Wed, Feb 7, 2024 at 12:23=E2=80=AFPM Shinas Rasheed <srasheed@marvell.co=
m> wrote:

> Add support for ndo ops to set MAC address, change MTU, get stats.
> Add control path support to set MAC address, change MTU, get stats,
> set speed, get and set link mode.
>
[Kalesh]: You are adding support for only one ndo hook ".ndo_get_stats64"
in this patch. Am I missing something?

>
> Signed-off-by: Shinas Rasheed <srasheed@marvell.com>
> ---
> V6:
>   - No changes
>
> V5:
> https://lore.kernel.org/all/20240129050254.3047778-6-srasheed@marvell.com=
/
>   - No changes
>
> V4:
> https://lore.kernel.org/all/20240108124213.2966536-6-srasheed@marvell.com=
/
>   - Provide more stats in ndo_get_stats64 such as tx_dropped, rx_dropped
>     etc.
>
> V3:
> https://lore.kernel.org/all/20240105203823.2953604-6-srasheed@marvell.com=
/
>   - No changes
>
> V2:
> https://lore.kernel.org/all/20231223134000.2906144-6-srasheed@marvell.com=
/
>   - No changes
>
> V1:
> https://lore.kernel.org/all/20231221092844.2885872-6-srasheed@marvell.com=
/
>
>  .../marvell/octeon_ep_vf/octep_vf_main.c      | 58 +++++++++++++++++++
>  1 file changed, 58 insertions(+)
>
> diff --git a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c
> b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c
> index 562beed9af6a..ff879b1e846e 100644
> --- a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c
> +++ b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c
> @@ -186,6 +186,23 @@ static netdev_tx_t octep_vf_start_xmit(struct sk_buf=
f
> *skb,
>         return NETDEV_TX_OK;
>  }
>
> +int octep_vf_get_if_stats(struct octep_vf_device *oct)
>
[Kalesh]: You may want to make this function static.

> +{
> +       struct octep_vf_iface_rxtx_stats vf_stats;
> +       int ret, size;
> +
> +       memset(&vf_stats, 0, sizeof(struct octep_vf_iface_rxtx_stats));
>
[Kalesh]: You can avoid memset by initializing vf_stats =3D {};

> +       ret =3D octep_vf_mbox_bulk_read(oct, OCTEP_PFVF_MBOX_CMD_GET_STAT=
S,
> +                                     (u8 *)&vf_stats, &size);
> +       if (!ret) {
>
[Kalesh] For better alignment:
if (ret)
     return ret;

> +               memcpy(&oct->iface_rx_stats, &vf_stats.iface_rx_stats,
> +                      sizeof(struct octep_vf_iface_rx_stats));
> +               memcpy(&oct->iface_tx_stats, &vf_stats.iface_tx_stats,
> +                      sizeof(struct octep_vf_iface_tx_stats));
> +       }
> +       return ret;
> +}
> +
>  int octep_vf_get_link_info(struct octep_vf_device *oct)
>  {
>         int ret, size;
> @@ -199,6 +216,46 @@ int octep_vf_get_link_info(struct octep_vf_device
> *oct)
>         return 0;
>  }
>
> +/**
> + * octep_vf_get_stats64() - Get Octeon network device statistics.
> + *
> + * @netdev: kernel network device.
> + * @stats: pointer to stats structure to be filled in.
> + */
> +static void octep_vf_get_stats64(struct net_device *netdev,
> +                                struct rtnl_link_stats64 *stats)
> +{
> +       struct octep_vf_device *oct =3D netdev_priv(netdev);
> +       u64 tx_packets, tx_bytes, rx_packets, rx_bytes;
> +       int q;
> +
> +       tx_packets =3D 0;
> +       tx_bytes =3D 0;
> +       rx_packets =3D 0;
> +       rx_bytes =3D 0;
> +       for (q =3D 0; q < oct->num_oqs; q++) {
> +               struct octep_vf_iq *iq =3D oct->iq[q];
> +               struct octep_vf_oq *oq =3D oct->oq[q];
> +
> +               tx_packets +=3D iq->stats.instr_completed;
> +               tx_bytes +=3D iq->stats.bytes_sent;
> +               rx_packets +=3D oq->stats.packets;
> +               rx_bytes +=3D oq->stats.bytes;
> +       }
> +       stats->tx_packets =3D tx_packets;
> +       stats->tx_bytes =3D tx_bytes;
> +       stats->rx_packets =3D rx_packets;
> +       stats->rx_bytes =3D rx_bytes;
> +       if (!octep_vf_get_if_stats(oct)) {
> +               stats->multicast =3D oct->iface_rx_stats.mcast_pkts;
> +               stats->rx_errors =3D oct->iface_rx_stats.err_pkts;
> +               stats->rx_dropped =3D
> oct->iface_rx_stats.dropped_pkts_fifo_full +
> +                                   oct->iface_rx_stats.err_pkts;
> +               stats->rx_missed_errors =3D
> oct->iface_rx_stats.dropped_pkts_fifo_full;
> +               stats->tx_dropped =3D oct->iface_tx_stats.dropped;
> +       }
> +}
> +
>  /**
>   * octep_vf_tx_timeout_task - work queue task to Handle Tx queue timeout=
.
>   *
> @@ -313,6 +370,7 @@ static const struct net_device_ops octep_vf_netdev_op=
s
> =3D {
>         .ndo_open                =3D octep_vf_open,
>         .ndo_stop                =3D octep_vf_stop,
>         .ndo_start_xmit          =3D octep_vf_start_xmit,
> +       .ndo_get_stats64         =3D octep_vf_get_stats64,
>         .ndo_tx_timeout          =3D octep_vf_tx_timeout,
>         .ndo_set_mac_address     =3D octep_vf_set_mac,
>         .ndo_change_mtu          =3D octep_vf_change_mtu,
> --
> 2.25.1
>
>
>

--=20
Regards,
Kalesh A P

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<div dir=3D"ltr"><div dir=3D"ltr"><br></div><br><div class=3D"gmail_quote">=
<div dir=3D"ltr" class=3D"gmail_attr">On Wed, Feb 7, 2024 at 12:23=E2=80=AF=
PM Shinas Rasheed &lt;<a href=3D"mailto:srasheed@marvell.com">srasheed@marv=
ell.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"=
margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-lef=
t:1ex">Add support for ndo ops to set MAC address, change MTU, get stats.<b=
r>
Add control path support to set MAC address, change MTU, get stats,<br>
set speed, get and set link mode.<br></blockquote><div>[Kalesh]: You are ad=
ding support for only one ndo hook &quot;.ndo_get_stats64&quot; in this pat=
ch. Am I missing something?</div><blockquote class=3D"gmail_quote" style=3D=
"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-le=
ft:1ex">
<br>
Signed-off-by: Shinas Rasheed &lt;<a href=3D"mailto:srasheed@marvell.com" t=
arget=3D"_blank">srasheed@marvell.com</a>&gt;<br>
---<br>
V6:<br>
=C2=A0 - No changes<br>
<br>
V5: <a href=3D"https://lore.kernel.org/all/20240129050254.3047778-6-srashee=
d@marvell.com/" rel=3D"noreferrer" target=3D"_blank">https://lore.kernel.or=
g/all/20240129050254.3047778-6-srasheed@marvell.com/</a><br>
=C2=A0 - No changes<br>
<br>
V4: <a href=3D"https://lore.kernel.org/all/20240108124213.2966536-6-srashee=
d@marvell.com/" rel=3D"noreferrer" target=3D"_blank">https://lore.kernel.or=
g/all/20240108124213.2966536-6-srasheed@marvell.com/</a><br>
=C2=A0 - Provide more stats in ndo_get_stats64 such as tx_dropped, rx_dropp=
ed<br>
=C2=A0 =C2=A0 etc.<br>
<br>
V3: <a href=3D"https://lore.kernel.org/all/20240105203823.2953604-6-srashee=
d@marvell.com/" rel=3D"noreferrer" target=3D"_blank">https://lore.kernel.or=
g/all/20240105203823.2953604-6-srasheed@marvell.com/</a><br>
=C2=A0 - No changes<br>
<br>
V2: <a href=3D"https://lore.kernel.org/all/20231223134000.2906144-6-srashee=
d@marvell.com/" rel=3D"noreferrer" target=3D"_blank">https://lore.kernel.or=
g/all/20231223134000.2906144-6-srasheed@marvell.com/</a><br>
=C2=A0 - No changes<br>
<br>
V1: <a href=3D"https://lore.kernel.org/all/20231221092844.2885872-6-srashee=
d@marvell.com/" rel=3D"noreferrer" target=3D"_blank">https://lore.kernel.or=
g/all/20231221092844.2885872-6-srasheed@marvell.com/</a><br>
<br>
=C2=A0.../marvell/octeon_ep_vf/octep_vf_main.c=C2=A0 =C2=A0 =C2=A0 | 58 +++=
++++++++++++++++<br>
=C2=A01 file changed, 58 insertions(+)<br>
<br>
diff --git a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c b/dr=
ivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c<br>
index 562beed9af6a..ff879b1e846e 100644<br>
--- a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c<br>
+++ b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c<br>
@@ -186,6 +186,23 @@ static netdev_tx_t octep_vf_start_xmit(struct sk_buff =
*skb,<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 return NETDEV_TX_OK;<br>
=C2=A0}<br>
<br>
+int octep_vf_get_if_stats(struct octep_vf_device *oct)<br></blockquote><di=
v>[Kalesh]: You may want to make this function static.=C2=A0</div><blockquo=
te class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px =
solid rgb(204,204,204);padding-left:1ex">
+{<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0struct octep_vf_iface_rxtx_stats vf_stats;<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0int ret, size;<br>
+<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0memset(&amp;vf_stats, 0, sizeof(struct octep_vf=
_iface_rxtx_stats));<br></blockquote><div>[Kalesh]: You can avoid memset by=
 initializing vf_stats =3D {};=C2=A0</div><blockquote class=3D"gmail_quote"=
 style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);p=
adding-left:1ex">
+=C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D octep_vf_mbox_bulk_read(oct, OCTEP_PFVF=
_MBOX_CMD_GET_STATS,<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0(u8 *)&amp;vf_st=
ats, &amp;size);<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0if (!ret) {<br></blockquote><div>[Kalesh] For b=
etter alignment:</div><div>if (ret)</div><div>=C2=A0 =C2=A0 =C2=A0return re=
t;=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px=
 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
+=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0memcpy(&amp;oct-&gt=
;iface_rx_stats, &amp;vf_stats.iface_rx_stats,<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 sizeof(struct octep_vf_iface_rx_stats));<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0memcpy(&amp;oct-&gt=
;iface_tx_stats, &amp;vf_stats.iface_tx_stats,<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 sizeof(struct octep_vf_iface_tx_stats));<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0}<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0return ret;<br>
+}<br>
+<br>
=C2=A0int octep_vf_get_link_info(struct octep_vf_device *oct)<br>
=C2=A0{<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 int ret, size;<br>
@@ -199,6 +216,46 @@ int octep_vf_get_link_info(struct octep_vf_device *oct=
)<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 return 0;<br>
=C2=A0}<br>
<br>
+/**<br>
+ * octep_vf_get_stats64() - Get Octeon network device statistics.<br>
+ *<br>
+ * @netdev: kernel network device.<br>
+ * @stats: pointer to stats structure to be filled in.<br>
+ */<br>
+static void octep_vf_get_stats64(struct net_device *netdev,<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 struct rtnl_link_stats64 *stats)<br>
+{<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0struct octep_vf_device *oct =3D netdev_priv(net=
dev);<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0u64 tx_packets, tx_bytes, rx_packets, rx_bytes;=
<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0int q;<br>
+<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0tx_packets =3D 0;<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0tx_bytes =3D 0;<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0rx_packets =3D 0;<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0rx_bytes =3D 0;<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0for (q =3D 0; q &lt; oct-&gt;num_oqs; q++) {<br=
>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0struct octep_vf_iq =
*iq =3D oct-&gt;iq[q];<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0struct octep_vf_oq =
*oq =3D oct-&gt;oq[q];<br>
+<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0tx_packets +=3D iq-=
&gt;stats.instr_completed;<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0tx_bytes +=3D iq-&g=
t;stats.bytes_sent;<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0rx_packets +=3D oq-=
&gt;stats.packets;<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0rx_bytes +=3D oq-&g=
t;stats.bytes;<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0}<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0stats-&gt;tx_packets =3D tx_packets;<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0stats-&gt;tx_bytes =3D tx_bytes;<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0stats-&gt;rx_packets =3D rx_packets;<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0stats-&gt;rx_bytes =3D rx_bytes;<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0if (!octep_vf_get_if_stats(oct)) {<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0stats-&gt;multicast=
 =3D oct-&gt;iface_rx_stats.mcast_pkts;<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0stats-&gt;rx_errors=
 =3D oct-&gt;iface_rx_stats.err_pkts;<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0stats-&gt;rx_droppe=
d =3D oct-&gt;iface_rx_stats.dropped_pkts_fifo_full +<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0oct-&gt;iface_rx_stats.=
err_pkts;<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0stats-&gt;rx_missed=
_errors =3D oct-&gt;iface_rx_stats.dropped_pkts_fifo_full;<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0stats-&gt;tx_droppe=
d =3D oct-&gt;iface_tx_stats.dropped;<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0}<br>
+}<br>
+<br>
=C2=A0/**<br>
=C2=A0 * octep_vf_tx_timeout_task - work queue task to Handle Tx queue time=
out.<br>
=C2=A0 *<br>
@@ -313,6 +370,7 @@ static const struct net_device_ops octep_vf_netdev_ops =
=3D {<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 .ndo_open=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =3D octep_vf_open,<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 .ndo_stop=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =3D octep_vf_stop,<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 .ndo_start_xmit=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =3D octep_vf_start_xmit,<br>
+=C2=A0 =C2=A0 =C2=A0 =C2=A0.ndo_get_stats64=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0=3D octep_vf_get_stats64,<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 .ndo_tx_timeout=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =3D octep_vf_tx_timeout,<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 .ndo_set_mac_address=C2=A0 =C2=A0 =C2=A0=3D oct=
ep_vf_set_mac,<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 .ndo_change_mtu=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =3D octep_vf_change_mtu,<br>
-- <br>
2.25.1<br>
<br>
<br>
</blockquote></div><br clear=3D"all"><div><br></div><span class=3D"gmail_si=
gnature_prefix">-- </span><br><div dir=3D"ltr" class=3D"gmail_signature"><d=
iv dir=3D"ltr">Regards,<div>Kalesh A P</div></div></div></div>

--000000000000d7a04f0610c6385f--

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