Re: [dpdk-dev] [PATCH] net/iavf: fix link speed

["Zhang, AlvinX" <alvinx.zhang@intel.com>]

Thanks Beilei.

> -----Original Message-----
> From: Xing, Beilei
> Sent: Tuesday, April 28, 2020 3:50 PM
> To: Zhang, AlvinX <alvinx.zhang@intel.com>; dev@dpdk.org
> Cc: Zhang, Qi Z <qi.z.zhang@intel.com>; Wu, Jingjing <jingjing.wu@intel.com>
> Subject: RE: [PATCH] net/iavf: fix link speed
> 
> 
> 
> > -----Original Message-----
> > From: Zhang, AlvinX <alvinx.zhang@intel.com>
> > Sent: Tuesday, April 28, 2020 2:49 PM
> > To: dev@dpdk.org
> > Cc: Zhang, Qi Z <qi.z.zhang@intel.com>; Xing, Beilei
> > <beilei.xing@intel.com>; Zhang, AlvinX <alvinx.zhang@intel.com>; Wu,
> > Jingjing <jingjing.wu@intel.com>
> > Subject: [PATCH] net/iavf: fix link speed
> >
> > From: Alvin Zhang <alvinx.zhang@intel.com>
> >
> > If the PF driver does not support the new speed reporting capabilities
> > then use link_event else use link_event_adv to get the speed.
> >
> > Fixes: 48de41ca11f0 (net/iavf: enable link status update)
> > Cc: jingjing.wu@intel.com
> 
> Cc stable.
> 
> >
> > Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com>
> > ---
> >  drivers/net/iavf/iavf_vchnl.c | 47
> > ++++++++++++++++++++++++++++++++++++++++++-
> >  1 file changed, 46 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/net/iavf/iavf_vchnl.c
> > b/drivers/net/iavf/iavf_vchnl.c index
> > 2a0cdd9..104a769 100644
> > --- a/drivers/net/iavf/iavf_vchnl.c
> > +++ b/drivers/net/iavf/iavf_vchnl.c
> > @@ -130,6 +130,44 @@
> >  return err;
> >  }
> >
> > +static uint32_t
> > +iavf_convert_link_speed(uint32_t virt_link_speed) {
> 
> Why use uint32_t but not enum virtchnl_link_speed for the parameter?
> 
> > +uint32_t speed;
> > +
> > +switch (virt_link_speed) {
> > +case VIRTCHNL_LINK_SPEED_100MB:
> > +speed = 100;
> > +break;
> > +case VIRTCHNL_LINK_SPEED_1GB:
> > +speed = 1000;
> > +break;
> > +case VIRTCHNL_LINK_SPEED_10GB:
> > +speed = 10000;
> > +break;
> > +case VIRTCHNL_LINK_SPEED_40GB:
> > +speed = 40000;
> > +break;
> > +case VIRTCHNL_LINK_SPEED_20GB:
> > +speed = 20000;
> > +break;
> > +case VIRTCHNL_LINK_SPEED_25GB:
> > +speed = 25000;
> > +break;
> > +case VIRTCHNL_LINK_SPEED_2_5GB:
> > +speed = 2500;
> > +break;
> > +case VIRTCHNL_LINK_SPEED_5GB:
> > +speed = 5000;
> > +break;
> > +default:
> > +speed = 0;
> > +break;
> > +}
> > +
> > +return speed;
> > +}
> > +
> >  static void
> >  iavf_handle_pf_event_msg(struct rte_eth_dev *dev, uint8_t *msg,
> > uint16_t msglen) @@ -151,7 +189,14 @@  case
> > VIRTCHNL_EVENT_LINK_CHANGE:
> >  PMD_DRV_LOG(DEBUG, "VIRTCHNL_EVENT_LINK_CHANGE event");  vf-
> >link_up
> > = pf_msg->event_data.link_event.link_status;
> > -vf->link_speed = pf_msg-
> > >event_data.link_event_adv.link_speed;
> > +if (vf->vf_res->vf_cap_flags &
> > VIRTCHNL_VF_CAP_ADV_LINK_SPEED) {
> > +vf->link_speed =
> > +pf_msg-
> > >event_data.link_event_adv.link_speed;
> > +} else {
> > +enum virtchnl_link_speed speed;
> > +speed = pf_msg->event_data.link_event.link_speed;
> > +vf->link_speed = iavf_convert_link_speed(speed);
> > +}
> >  iavf_dev_link_update(dev, 0);
> >  _rte_eth_dev_callback_process(dev,
> > RTE_ETH_EVENT_INTR_LSC,
> >        NULL);
> > --
> > 1.8.3.1
>