octeontx2-pf: Add devlink port support

Register devlink port for the rvu representors.

Signed-off-by: Geetha sowjanya <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: Geetha sowjanya

drivers/net/ethernet/marvell/octeontx2/af/mbox.h

@@ -1583,6 +1583,7 @@ struct rep_evt_data {
 	u16 rx_mode;
 	u16 rx_flags;
 	u16 mtu;
+	u8 mac[ETH_ALEN];
 	u64 rsvd[5];
 };
 
@@ -1593,6 +1594,7 @@ struct rep_event {
 #define RVU_EVENT_PFVF_STATE		BIT_ULL(1)
 #define RVU_EVENT_MTU_CHANGE		BIT_ULL(2)
 #define RVU_EVENT_RX_MODE_CHANGE	BIT_ULL(3)
+#define RVU_EVENT_MAC_ADDR_CHANGE	BIT_ULL(4)
 	u16 event;
 	struct rep_evt_data evt_data;
 };

drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c

@@ -35,11 +35,15 @@ MBOX_UP_REP_MESSAGES
 
 static int rvu_rep_up_notify(struct rvu *rvu, struct rep_event *event)
 {
+	struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, event->pcifunc);
 	struct rep_event *msg;
 	int pf;
 
 	pf = rvu_get_pf(event->pcifunc);
 
+	if (event->event & RVU_EVENT_MAC_ADDR_CHANGE)
+		ether_addr_copy(pfvf->mac_addr, event->evt_data.mac);
+
 	mutex_lock(&rvu->mbox_lock);
 	msg = otx2_mbox_alloc_msg_rep_event_up_notify(rvu, pf);
 	if (!msg) {

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

@@ -28,6 +28,89 @@ MODULE_DESCRIPTION(DRV_STRING);
 MODULE_LICENSE("GPL");
 MODULE_DEVICE_TABLE(pci, rvu_rep_id_table);
 
+static int rvu_rep_notify_pfvf(struct otx2_nic *priv, u16 event,
+			       struct rep_event *data);
+
+static int rvu_rep_dl_port_fn_hw_addr_get(struct devlink_port *port,
+					  u8 *hw_addr, int *hw_addr_len,
+					  struct netlink_ext_ack *extack)
+{
+	struct rep_dev *rep = container_of(port, struct rep_dev, dl_port);
+
+	ether_addr_copy(hw_addr, rep->mac);
+	*hw_addr_len = ETH_ALEN;
+	return 0;
+}
+
+static int rvu_rep_dl_port_fn_hw_addr_set(struct devlink_port *port,
+					  const u8 *hw_addr, int hw_addr_len,
+					  struct netlink_ext_ack *extack)
+{
+	struct rep_dev *rep = container_of(port, struct rep_dev, dl_port);
+	struct otx2_nic *priv = rep->mdev;
+	struct rep_event evt = {0};
+
+	eth_hw_addr_set(rep->netdev, hw_addr);
+	ether_addr_copy(rep->mac, hw_addr);
+
+	ether_addr_copy(evt.evt_data.mac, hw_addr);
+	evt.pcifunc = rep->pcifunc;
+	rvu_rep_notify_pfvf(priv, RVU_EVENT_MAC_ADDR_CHANGE, &evt);
+	return 0;
+}
+
+static const struct devlink_port_ops rvu_rep_dl_port_ops = {
+	.port_fn_hw_addr_get = rvu_rep_dl_port_fn_hw_addr_get,
+	.port_fn_hw_addr_set = rvu_rep_dl_port_fn_hw_addr_set,
+};
+
+static void
+rvu_rep_devlink_set_switch_id(struct otx2_nic *priv,
+			      struct netdev_phys_item_id *ppid)
+{
+	struct pci_dev *pdev = priv->pdev;
+	u64 id;
+
+	id = pci_get_dsn(pdev);
+
+	ppid->id_len = sizeof(id);
+	put_unaligned_be64(id, &ppid->id);
+}
+
+static void rvu_rep_devlink_port_unregister(struct rep_dev *rep)
+{
+	devlink_port_unregister(&rep->dl_port);
+}
+
+static int rvu_rep_devlink_port_register(struct rep_dev *rep)
+{
+	struct devlink_port_attrs attrs = {};
+	struct otx2_nic *priv = rep->mdev;
+	struct devlink *dl = priv->dl->dl;
+	int err;
+
+	if (!(rep->pcifunc & RVU_PFVF_FUNC_MASK)) {
+		attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
+		attrs.phys.port_number = rvu_get_pf(rep->pcifunc);
+	} else {
+		attrs.flavour = DEVLINK_PORT_FLAVOUR_PCI_VF;
+		attrs.pci_vf.pf = rvu_get_pf(rep->pcifunc);
+		attrs.pci_vf.vf = rep->pcifunc & RVU_PFVF_FUNC_MASK;
+	}
+
+	rvu_rep_devlink_set_switch_id(priv, &attrs.switch_id);
+	devlink_port_attrs_set(&rep->dl_port, &attrs);
+
+	err = devl_port_register_with_ops(dl, &rep->dl_port, rep->rep_id,
+					  &rvu_rep_dl_port_ops);
+	if (err) {
+		dev_err(rep->mdev->dev, "devlink_port_register failed: %d\n",
+			err);
+		return err;
+	}
+	return 0;
+}
+
 static int rvu_rep_get_repid(struct otx2_nic *priv, u16 pcifunc)
 {
 	int rep_id;
@@ -386,6 +469,7 @@ void rvu_rep_destroy(struct otx2_nic *priv)
 	for (rep_id = 0; rep_id < priv->rep_cnt; rep_id++) {
 		rep = priv->reps[rep_id];
 		unregister_netdev(rep->netdev);
+		rvu_rep_devlink_port_unregister(rep);
 		free_netdev(rep->netdev);
 	}
 	kfree(priv->reps);
@@ -439,6 +523,11 @@ int rvu_rep_create(struct otx2_nic *priv, struct netlink_ext_ack *extack)
 
 		ndev->features |= ndev->hw_features;
 		eth_hw_addr_random(ndev);
+		err = rvu_rep_devlink_port_register(rep);
+		if (err)
+			goto exit;
+
+		SET_NETDEV_DEVLINK_PORT(ndev, &rep->dl_port);
 		err = register_netdev(ndev);
 		if (err) {
 			NL_SET_ERR_MSG_MOD(extack,
@@ -459,6 +548,7 @@ int rvu_rep_create(struct otx2_nic *priv, struct netlink_ext_ack *extack)
 	while (--rep_id >= 0) {
 		rep = priv->reps[rep_id];
 		unregister_netdev(rep->netdev);
+		rvu_rep_devlink_port_unregister(rep);
 		free_netdev(rep->netdev);
 	}
 	kfree(priv->reps);

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

@@ -34,10 +34,12 @@ struct rep_dev {
 	struct net_device *netdev;
 	struct rep_stats stats;
 	struct delayed_work stats_wrk;
+	struct devlink_port dl_port;
 #define RVU_REP_VF_INITIALIZED		BIT_ULL(0)
 	u64 flags;
 	u16 rep_id;
 	u16 pcifunc;
+	u8 mac[ETH_ALEN];
 };
 
 static inline bool otx2_rep_dev(struct pci_dev *pdev)