Merge branch 'nfp-add-basic-ethtool-callbacks-to-representors'

Jakub Kicinski says:

====================
nfp: add basic ethtool callbacks to representors

This set extends the basic ethtool functionality to representor
netdevs.  I start with providing link state via ethtool and then
move on to functions such as driver information, statistics and
FW log dump.  The series contains a number of clean ups to the
ethtool stats code too, some of the logic is simplified by making
better use of the nfp_port abstraction.  The stats we expose on
representors are only the PCIe and MAC port statistics firmware
maintains for us.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/netronome/nfp/flower/main.c

@@ -159,12 +159,18 @@ nfp_flower_spawn_vnic_reprs(struct nfp_app *app,
 			goto err_reprs_clean;
 		}
 
+		/* For now we only support 1 PF */
+		WARN_ON(repr_type == NFP_REPR_TYPE_PF && i);
+
 		port = nfp_port_alloc(app, port_type, reprs->reprs[i]);
 		if (repr_type == NFP_REPR_TYPE_PF) {
 			port->pf_id = i;
+			port->vnic = priv->nn->dp.ctrl_bar;
 		} else {
-			port->pf_id = 0; /* For now we only support 1 PF */
+			port->pf_id = 0;
 			port->vf_id = i;
+			port->vnic =
+				app->pf->vf_cfg_mem + i * NFP_NET_CFG_BAR_SZ;
 		}
 
 		eth_hw_addr_random(reprs->reprs[i]);

drivers/net/ethernet/netronome/nfp/nfp_app.c

@@ -38,6 +38,7 @@
 #include "nfpcore/nfp_nffw.h"
 #include "nfp_app.h"
 #include "nfp_main.h"
+#include "nfp_net.h"
 #include "nfp_net_repr.h"
 
 static const struct nfp_app_type *apps[] = {
@@ -48,6 +49,25 @@ static const struct nfp_app_type *apps[] = {
 #endif
 };
 
+struct nfp_app *nfp_app_from_netdev(struct net_device *netdev)
+{
+	if (nfp_netdev_is_nfp_net(netdev)) {
+		struct nfp_net *nn = netdev_priv(netdev);
+
+		return nn->app;
+	}
+
+	if (nfp_netdev_is_nfp_repr(netdev)) {
+		struct nfp_repr *repr = netdev_priv(netdev);
+
+		return repr->app;
+	}
+
+	WARN(1, "Unknown netdev type for nfp_app\n");
+
+	return NULL;
+}
+
 const char *nfp_app_mip_name(struct nfp_app *app)
 {
 	if (!app || !app->pf->mip)

drivers/net/ethernet/netronome/nfp/nfp_app.h

@@ -293,6 +293,8 @@ static inline struct net_device *nfp_app_repr_get(struct nfp_app *app, u32 id)
 	return app->type->repr_get(app, id);
 }
 
+struct nfp_app *nfp_app_from_netdev(struct net_device *netdev);
+
 struct nfp_reprs *
 nfp_app_reprs_set(struct nfp_app *app, enum nfp_repr_type type,
 		  struct nfp_reprs *reprs);

drivers/net/ethernet/netronome/nfp/nfp_net.h

@@ -573,7 +573,6 @@ struct nfp_net_dp {
  * @tx_bar:             Pointer to mapped TX queues
  * @rx_bar:             Pointer to mapped FL/RX queues
  * @debugfs_dir:	Device directory in debugfs
- * @ethtool_dump_flag:	Ethtool dump flag
  * @vnic_list:		Entry on device vNIC list
  * @pdev:		Backpointer to PCI device
  * @app:		APP handle if available
@@ -640,7 +639,6 @@ struct nfp_net {
 	u8 __iomem *rx_bar;
 
 	struct dentry *debugfs_dir;
-	u32 ethtool_dump_flag;
 
 	struct list_head vnic_list;
 

drivers/net/ethernet/netronome/nfp/nfp_net_debugfs.c

@@ -125,7 +125,6 @@ static int nfp_net_debugfs_tx_q_read(struct seq_file *file, void *data)
 	struct nfp_net_tx_ring *tx_ring;
 	struct nfp_net_tx_desc *txd;
 	int d_rd_p, d_wr_p, txd_cnt;
-	struct sk_buff *skb;
 	struct nfp_net *nn;
 	int i;
 
@@ -158,13 +157,15 @@ static int nfp_net_debugfs_tx_q_read(struct seq_file *file, void *data)
 			   txd->vals[0], txd->vals[1],
 			   txd->vals[2], txd->vals[3]);
 
-		skb = READ_ONCE(tx_ring->txbufs[i].skb);
-		if (skb) {
-			if (tx_ring == r_vec->tx_ring)
+		if (tx_ring == r_vec->tx_ring) {
+			struct sk_buff *skb = READ_ONCE(tx_ring->txbufs[i].skb);
+
+			if (skb)
 				seq_printf(file, " skb->head=%p skb->data=%p",
 					   skb->head, skb->data);
-			else
-				seq_printf(file, " frag=%p", skb);
+		} else {
+			seq_printf(file, " frag=%p",
+				   READ_ONCE(tx_ring->txbufs[i].frag));
 		}
 
 		if (tx_ring->txbufs[i].dma_addr)