netdev - [PATCH net-next 3/8] nfp: register devlink ports of all reprs

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Date:   Tue, 26 Feb 2019 10:24:31 -0800
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     davem@...emloft.net, jiri@...nulli.us
Cc:     oss-drivers@...ronome.com, netdev@...r.kernel.org,
        Jakub Kicinski <jakub.kicinski@...ronome.com>
Subject: [PATCH net-next 3/8] nfp: register devlink ports of all reprs

Register all representors as devlink ports.

The port_index is slightly tricky to figure out, we use a bit of
arbitrary math to create unique IDs for PCI ports.

Signed-off-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
---
 .../net/ethernet/netronome/nfp/nfp_devlink.c  | 47 ++++++++++++++++++-
 .../net/ethernet/netronome/nfp/nfp_net_repr.c | 16 ++++++-
 2 files changed, 60 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_devlink.c b/drivers/net/ethernet/netronome/nfp/nfp_devlink.c
index 9af3cb1f2f17..36976e37d162 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_devlink.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_devlink.c
@@ -350,7 +350,8 @@ const struct devlink_ops nfp_devlink_ops = {
 	.flash_update		= nfp_devlink_flash_update,
 };
 
-int nfp_devlink_port_init(struct nfp_app *app, struct nfp_port *port)
+static int
+nfp_devlink_port_init_phys(struct devlink *devlink, struct nfp_port *port)
 {
 	struct nfp_eth_table_port eth_port;
 	int ret;
@@ -368,6 +369,34 @@ int nfp_devlink_port_init(struct nfp_app *app, struct nfp_port *port)
 	return 0;
 }
 
+static int
+nfp_devlink_port_init_pci(struct devlink *devlink, struct nfp_port *port,
+			  u32 flavour)
+{
+	devlink_port_type_eth_set(&port->dl_port, port->netdev);
+	devlink_port_attrs_pci_set(&port->dl_port, flavour,
+				   port->pf_id, port->vf_id);
+	return 0;
+}
+
+int nfp_devlink_port_init(struct nfp_app *app, struct nfp_port *port)
+{
+	struct devlink *devlink = priv_to_devlink(app->pf);
+
+	switch (port->type) {
+	case NFP_PORT_PHYS_PORT:
+		return nfp_devlink_port_init_phys(devlink, port);
+	case NFP_PORT_PF_PORT:
+		return nfp_devlink_port_init_pci(devlink, port,
+						 DEVLINK_PORT_FLAVOUR_PCI_PF);
+	case NFP_PORT_VF_PORT:
+		return nfp_devlink_port_init_pci(devlink, port,
+						 DEVLINK_PORT_FLAVOUR_PCI_VF);
+	default:
+		return -EINVAL;
+	}
+}
+
 void nfp_devlink_port_clean(struct nfp_port *port)
 {
 }
@@ -376,7 +405,21 @@ int nfp_devlink_port_register(struct nfp_app *app, struct nfp_port *port)
 {
 	struct devlink *devlink = priv_to_devlink(app->pf);
 
-	return devlink_port_register(devlink, &port->dl_port, port->eth_id);
+	switch (port->type) {
+	case NFP_PORT_PHYS_PORT:
+		return devlink_port_register(devlink, &port->dl_port,
+					     port->eth_id);
+	case NFP_PORT_PF_PORT:
+		return devlink_port_register(devlink, &port->dl_port,
+					     (port->pf_id + 1) * 10000 +
+					     port->pf_split_id * 1000);
+	case NFP_PORT_VF_PORT:
+		return devlink_port_register(devlink, &port->dl_port,
+					     (port->pf_id + 1) * 10000 +
+					     port->vf_id + 1);
+	default:
+		return -EINVAL;
+	}
 }
 
 void nfp_devlink_port_unregister(struct nfp_port *port)
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c b/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c
index d2c803bb4e56..869d22760a6e 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c
@@ -292,7 +292,9 @@ nfp_repr_transfer_features(struct net_device *netdev, struct net_device *lower)
 
 static void nfp_repr_clean(struct nfp_repr *repr)
 {
+	nfp_devlink_port_unregister(repr->port);
 	unregister_netdev(repr->netdev);
+	nfp_devlink_port_clean(repr->port);
 	nfp_app_repr_clean(repr->app, repr->netdev);
 	dst_release((struct dst_entry *)repr->dst);
 	nfp_port_free(repr->port);
@@ -395,12 +397,24 @@ int nfp_repr_init(struct nfp_app *app, struct net_device *netdev,
 	if (err)
 		goto err_clean;
 
-	err = register_netdev(netdev);
+	err = nfp_devlink_port_init(app, repr->port);
 	if (err)
 		goto err_repr_clean;
 
+	err = register_netdev(netdev);
+	if (err)
+		goto err_port_clean;
+
+	err = nfp_devlink_port_register(app, repr->port);
+	if (err)
+		goto err_unreg_netdev;
+
 	return 0;
 
+err_unreg_netdev:
+	unregister_netdev(repr->netdev);
+err_port_clean:
+	nfp_devlink_port_clean(repr->port);
 err_repr_clean:
 	nfp_app_repr_clean(app, netdev);
 err_clean:
-- 
2.19.2