octeontx2-pf: Add basic net_device_ops

Implements basic set of net_device_ops.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

@@ -2116,7 +2116,7 @@ static netdev_tx_t otx2_xmit(struct sk_buff *skb, struct net_device *netdev)
 	sq = &pf->qset.sq[sq_idx];
 	txq = netdev_get_tx_queue(netdev, qidx);
 
-	if (!otx2_sq_append_skb(netdev, sq, skb, qidx)) {
+	if (!otx2_sq_append_skb(pf, txq, sq, skb, qidx)) {
 		netif_tx_stop_queue(txq);
 
 		/* Check again, incase SQBs got freed up */

drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c

@@ -376,9 +376,11 @@ static void otx2_rcv_pkt_handler(struct otx2_nic *pfvf,
 	}
 	otx2_set_rxhash(pfvf, cqe, skb);
 
-	skb_record_rx_queue(skb, cq->cq_idx);
-	if (pfvf->netdev->features & NETIF_F_RXCSUM)
-		skb->ip_summed = CHECKSUM_UNNECESSARY;
+	if (!(pfvf->flags & OTX2_FLAG_REP_MODE_ENABLED)) {
+		skb_record_rx_queue(skb, cq->cq_idx);
+		if (pfvf->netdev->features & NETIF_F_RXCSUM)
+			skb->ip_summed = CHECKSUM_UNNECESSARY;
+	}
 
 	if (pfvf->flags & OTX2_FLAG_TC_MARK_ENABLED)
 		skb->mark = parse->match_id;
@@ -453,6 +455,7 @@ static int otx2_tx_napi_handler(struct otx2_nic *pfvf,
 	int tx_pkts = 0, tx_bytes = 0, qidx;
 	struct otx2_snd_queue *sq;
 	struct nix_cqe_tx_s *cqe;
+	struct net_device *ndev;
 	int processed_cqe = 0;
 
 	if (cq->pend_cqe >= budget)
@@ -493,19 +496,28 @@ static int otx2_tx_napi_handler(struct otx2_nic *pfvf,
 	otx2_write64(pfvf, NIX_LF_CQ_OP_DOOR,
 		     ((u64)cq->cq_idx << 32) | processed_cqe);
 
+#if IS_ENABLED(CONFIG_RVU_ESWITCH)
+	if (pfvf->flags & OTX2_FLAG_REP_MODE_ENABLED)
+		ndev = pfvf->reps[qidx]->netdev;
+	else
+#endif
+		ndev = pfvf->netdev;
+
 	if (likely(tx_pkts)) {
 		struct netdev_queue *txq;
 
 		qidx = cq->cq_idx - pfvf->hw.rx_queues;
 
 		if (qidx >= pfvf->hw.tx_queues)
 			qidx -= pfvf->hw.xdp_queues;
-		txq = netdev_get_tx_queue(pfvf->netdev, qidx);
+		if (pfvf->flags & OTX2_FLAG_REP_MODE_ENABLED)
+			qidx = 0;
+		txq = netdev_get_tx_queue(ndev, qidx);
 		netdev_tx_completed_queue(txq, tx_pkts, tx_bytes);
 		/* Check if queue was stopped earlier due to ring full */
 		smp_mb();
 		if (netif_tx_queue_stopped(txq) &&
-		    netif_carrier_ok(pfvf->netdev))
+		    netif_carrier_ok(ndev))
 			netif_tx_wake_queue(txq);
 	}
 	return 0;
@@ -1142,13 +1154,13 @@ static void otx2_set_txtstamp(struct otx2_nic *pfvf, struct sk_buff *skb,
 	}
 }
 
-bool otx2_sq_append_skb(struct net_device *netdev, struct otx2_snd_queue *sq,
+bool otx2_sq_append_skb(void *dev, struct netdev_queue *txq,
+			struct otx2_snd_queue *sq,
 			struct sk_buff *skb, u16 qidx)
 {
-	struct netdev_queue *txq = netdev_get_tx_queue(netdev, qidx);
-	struct otx2_nic *pfvf = netdev_priv(netdev);
 	int offset, num_segs, free_desc;
 	struct nix_sqe_hdr_s *sqe_hdr;
+	struct otx2_nic *pfvf = dev;
 
 	/* Check if there is enough room between producer
 	 * and consumer index.

drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.h

@@ -167,7 +167,8 @@ static inline u64 otx2_iova_to_phys(void *iommu_domain, dma_addr_t dma_addr)
 }
 
 int otx2_napi_handler(struct napi_struct *napi, int budget);
-bool otx2_sq_append_skb(struct net_device *netdev, struct otx2_snd_queue *sq,
+bool otx2_sq_append_skb(void *dev, struct netdev_queue *txq,
+			struct otx2_snd_queue *sq,
 			struct sk_buff *skb, u16 qidx);
 void cn10k_sqe_flush(void *dev, struct otx2_snd_queue *sq,
 		     int size, int qidx);

drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c

@@ -395,7 +395,7 @@ static netdev_tx_t otx2vf_xmit(struct sk_buff *skb, struct net_device *netdev)
 	sq = &vf->qset.sq[qidx];
 	txq = netdev_get_tx_queue(netdev, qidx);
 
-	if (!otx2_sq_append_skb(netdev, sq, skb, qidx)) {
+	if (!otx2_sq_append_skb(vf, txq, sq, skb, qidx)) {
 		netif_tx_stop_queue(txq);
 
 		/* Check again, incase SQBs got freed up */

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

@@ -28,6 +28,51 @@ MODULE_DESCRIPTION(DRV_STRING);
 MODULE_LICENSE("GPL");
 MODULE_DEVICE_TABLE(pci, rvu_rep_id_table);
 
+static netdev_tx_t rvu_rep_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct rep_dev *rep = netdev_priv(dev);
+	struct otx2_nic *pf = rep->mdev;
+	struct otx2_snd_queue *sq;
+	struct netdev_queue *txq;
+
+	sq = &pf->qset.sq[rep->rep_id];
+	txq = netdev_get_tx_queue(dev, 0);
+
+	if (!otx2_sq_append_skb(pf, txq, sq, skb, rep->rep_id)) {
+		netif_tx_stop_queue(txq);
+
+		/* Check again, in case SQBs got freed up */
+		smp_mb();
+		if (((sq->num_sqbs - *sq->aura_fc_addr) * sq->sqe_per_sqb)
+							> sq->sqe_thresh)
+			netif_tx_wake_queue(txq);
+
+		return NETDEV_TX_BUSY;
+	}
+	return NETDEV_TX_OK;
+}
+
+static int rvu_rep_open(struct net_device *dev)
+{
+	netif_carrier_on(dev);
+	netif_tx_start_all_queues(dev);
+	return 0;
+}
+
+static int rvu_rep_stop(struct net_device *dev)
+{
+	netif_carrier_off(dev);
+	netif_tx_disable(dev);
+
+	return 0;
+}
+
+static const struct net_device_ops rvu_rep_netdev_ops = {
+	.ndo_open		= rvu_rep_open,
+	.ndo_stop		= rvu_rep_stop,
+	.ndo_start_xmit		= rvu_rep_xmit,
+};
+
 static int rvu_rep_napi_init(struct otx2_nic *priv,
 			     struct netlink_ext_ack *extack)
 {
@@ -208,6 +253,7 @@ int rvu_rep_create(struct otx2_nic *priv, struct netlink_ext_ack *extack)
 
 		ndev->min_mtu = OTX2_MIN_MTU;
 		ndev->max_mtu = priv->hw.max_mtu;
+		ndev->netdev_ops = &rvu_rep_netdev_ops;
 		pcifunc = priv->rep_pf_map[rep_id];
 		rep->pcifunc = pcifunc;