Commit 3392f919 authored by Geetha sowjanya's avatar Geetha sowjanya Committed by David S. Miller
Browse files

octeontx2-pf: Configure VF mtu via representor 



Adds support to manage the mtu configuration for VF through representor.
On update of representor mtu a mbox notification is send
to VF to update its mtu.

This feature is implemented based on the "Network Function Representors"
kernel documentation.
"
Setting an MTU on the representor should cause that same MTU
to be reported to the representee.
"

Signed-off-by: default avatarSai Krishna <saikrishnag@marvell.com>
Signed-off-by: default avatarGeetha sowjanya <gakula@marvell.com>
Reviewed-by: default avatarSimon Horman <horms@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b8fea84a

drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c

+5 −0
Original line number Diff line number Diff line
@@ -854,6 +854,11 @@ static int otx2_mbox_up_handler_rep_event_up_notify(struct otx2_nic *pf, 
{

	struct net_device *netdev = pf->netdev;



	if (info->event == RVU_EVENT_MTU_CHANGE) {

		netdev->mtu = info->evt_data.mtu;

		return 0;

	}



	if (info->event == RVU_EVENT_PORT_STATE) {

		if (info->evt_data.port_state) {

			pf->flags |= OTX2_FLAG_PORT_UP;

drivers/net/ethernet/marvell/octeontx2/nic/rep.c

+17 −0
Original line number Diff line number Diff line
@@ -79,6 +79,22 @@ int rvu_event_up_notify(struct otx2_nic *pf, struct rep_event *info) 
	return 0;

}



static int rvu_rep_change_mtu(struct net_device *dev, int new_mtu)

{

	struct rep_dev *rep = netdev_priv(dev);

	struct otx2_nic *priv = rep->mdev;

	struct rep_event evt = {0};



	netdev_info(dev, "Changing MTU from %d to %d\n",

		    dev->mtu, new_mtu);

	dev->mtu = new_mtu;



	evt.evt_data.mtu = new_mtu;

	evt.pcifunc = rep->pcifunc;

	rvu_rep_notify_pfvf(priv, RVU_EVENT_MTU_CHANGE, &evt);

	return 0;

}



static void rvu_rep_get_stats(struct work_struct *work)

{

	struct delayed_work *del_work = to_delayed_work(work);
@@ -226,6 +242,7 @@ static const struct net_device_ops rvu_rep_netdev_ops = { 
	.ndo_stop		= rvu_rep_stop,

	.ndo_start_xmit		= rvu_rep_xmit,

	.ndo_get_stats64	= rvu_rep_get_stats64,

	.ndo_change_mtu		= rvu_rep_change_mtu,

};



static int rvu_rep_napi_init(struct otx2_nic *priv,