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octeontx2-pf: Configure VF mtu via representor

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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: Sai Krishna <saikrishnag@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Geetha sowjanya 2024-11-07 21:38:34 +05:30 committed by David S. Miller
parent b8fea84a04
commit 3392f91903
2 changed files with 22 additions and 0 deletions
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5
drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
View File

@ -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;

17
drivers/net/ethernet/marvell/octeontx2/nic/rep.c
View File

@ -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,