> -----Original Message-----
> From: Ferruh Yigit <ferruh.yi...@amd.com>
> Sent: Friday, October 21, 2022 17:50
> To: Guo, Junfeng <junfeng....@intel.com>; Zhang, Qi Z
> <qi.z.zh...@intel.com>; Wu, Jingjing <jingjing...@intel.com>; Xing,
> Beilei <beilei.x...@intel.com>
> Cc: dev@dpdk.org; Li, Xiaoyun <xiaoyun...@intel.com>;
> awogbem...@google.com; Richardson, Bruce
> <bruce.richard...@intel.com>; hemant.agra...@nxp.com;
> step...@networkplumber.org; Xia, Chenbo <chenbo....@intel.com>;
> Zhang, Helin <helin.zh...@intel.com>
> Subject: Re: [PATCH v7 5/8] net/gve: add support for MTU setting
>
> On 10/21/2022 10:19 AM, Junfeng Guo wrote:
>
> >
> > Support dev_ops mtu_set.
> >
> > Signed-off-by: Xiaoyun Li <xiaoyun...@intel.com>
> > Signed-off-by: Junfeng Guo <junfeng....@intel.com>
>
> <...>
>
> > +static int
> > +gve_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
> > +{
> > + struct gve_priv *priv = dev->data->dev_private;
> > + int err;
> > +
> > + if (mtu < RTE_ETHER_MIN_MTU || mtu > priv->max_mtu) {
> > + PMD_DRV_LOG(ERR, "MIN MTU is %u, MAX MTU is %u",
> > + RTE_ETHER_MIN_MTU, priv->max_mtu);
> > + return -EINVAL;
> > + }
> > +
> > + /* mtu setting is forbidden if port is start */
> > + if (dev->data->dev_started) {
> > + PMD_DRV_LOG(ERR, "Port must be stopped before
> configuration");
> > + return -EBUSY;
> > + }
> > +
> > + err = gve_adminq_set_mtu(priv, mtu);
> > + if (err) {
> > + PMD_DRV_LOG(ERR, "Failed to set mtu as %u err = %d", mtu,
> err);
> > + return err;
> > + }
> > +
> > + return 0;
> > +}
> > +
>
> [copy/paste from previous version]
>
> configure() (gve_dev_configure()) also get 'mtu' as user config
> ('eth_conf->rxmode.mtu') which is ignored right now,
>
> since there is 'gve_adminq_set_mtu()' command already what do you
> think
> to use it within 'gve_dev_configure()'?
There may be issues to set mtu with ('eth_conf->rxmode.mtu').
So better to keep this ignored at this stage.
