nfp: flower: add per repr private data for LAG offload

Add a bitmap to each flower repr to track its state if it is enslaved by a
bond. This LAG state may be different to the port state - for example, the
port may be up but LAG state may be down due to the selection in an
active/backup bond.

Signed-off-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

@@ -185,6 +185,10 @@ nfp_flower_repr_netdev_init(struct nfp_app *app, struct net_device *netdev)
 static void
 nfp_flower_repr_netdev_clean(struct nfp_app *app, struct net_device *netdev)
 {
+	struct nfp_repr *repr = netdev_priv(netdev);
+
+	kfree(repr->app_priv);
+
 	tc_setup_cb_egdev_unregister(netdev, nfp_flower_setup_tc_egress_cb,
 				     netdev_priv(netdev));
 }
@@ -225,7 +229,9 @@ nfp_flower_spawn_vnic_reprs(struct nfp_app *app,
 	u8 nfp_pcie = nfp_cppcore_pcie_unit(app->pf->cpp);
 	struct nfp_flower_priv *priv = app->priv;
 	atomic_t *replies = &priv->reify_replies;
+	struct nfp_flower_repr_priv *repr_priv;
 	enum nfp_port_type port_type;
+	struct nfp_repr *nfp_repr;
 	struct nfp_reprs *reprs;
 	int i, err, reify_cnt;
 	const u8 queue = 0;
@@ -248,6 +254,15 @@ nfp_flower_spawn_vnic_reprs(struct nfp_app *app,
 			goto err_reprs_clean;
 		}
 
+		repr_priv = kzalloc(sizeof(*repr_priv), GFP_KERNEL);
+		if (!repr_priv) {
+			err = -ENOMEM;
+			goto err_reprs_clean;
+		}
+
+		nfp_repr = netdev_priv(repr);
+		nfp_repr->app_priv = repr_priv;
+
 		/* For now we only support 1 PF */
 		WARN_ON(repr_type == NFP_REPR_TYPE_PF && i);
 
@@ -324,6 +339,8 @@ nfp_flower_spawn_phy_reprs(struct nfp_app *app, struct nfp_flower_priv *priv)
 {
 	struct nfp_eth_table *eth_tbl = app->pf->eth_tbl;
 	atomic_t *replies = &priv->reify_replies;
+	struct nfp_flower_repr_priv *repr_priv;
+	struct nfp_repr *nfp_repr;
 	struct sk_buff *ctrl_skb;
 	struct nfp_reprs *reprs;
 	int err, reify_cnt;
@@ -351,6 +368,15 @@ nfp_flower_spawn_phy_reprs(struct nfp_app *app, struct nfp_flower_priv *priv)
 			goto err_reprs_clean;
 		}
 
+		repr_priv = kzalloc(sizeof(*repr_priv), GFP_KERNEL);
+		if (!repr_priv) {
+			err = -ENOMEM;
+			goto err_reprs_clean;
+		}
+
+		nfp_repr = netdev_priv(repr);
+		nfp_repr->app_priv = repr_priv;
+
 		port = nfp_port_alloc(app, NFP_PORT_PHYS_PORT, repr);
 		if (IS_ERR(port)) {
 			err = PTR_ERR(port);

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

@@ -160,6 +160,14 @@ struct nfp_flower_priv {
 	struct nfp_mtu_conf mtu_conf;
 };
 
+/**
+ * struct nfp_flower_repr_priv - Flower APP per-repr priv data
+ * @lag_port_flags:	Extended port flags to record lag state of repr
+ */
+struct nfp_flower_repr_priv {
+	unsigned long lag_port_flags;
+};
+
 struct nfp_fl_key_ls {
 	u32 key_layer_two;
 	u8 key_layer;