nfp: move bpf offload code to the BPF app

Move bulk of the eBPF offload code out of common vNIC code into
app-specific callbacks.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 61 insertions, 0 deletions

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_app.h b/drivers/net/ethernet/netronome/nfp/nfp_app.h
index b5426398f29e..13efdefffa1a 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_app.h
+++ b/drivers/net/ethernet/netronome/nfp/nfp_app.h
@@ -34,7 +34,10 @@
 #ifndef _NFP_APP_H
 #define _NFP_APP_H 1
 
+struct bpf_prog;
+struct net_device;
 struct pci_dev;
+struct tc_to_netdev;
 struct nfp_app;
 struct nfp_cpp;
 struct nfp_pf;
@@ -55,7 +58,12 @@ extern const struct nfp_app_type app_bpf;
  *
  * Callbacks
  * @init:	perform basic app checks
+ * @extra_cap:	extra capabilities string
  * @vnic_init:	init vNICs (assign port types, etc.)
+ * @vnic_clean:	clean up app's vNIC state
+ * @setup_tc:	setup TC ndo
+ * @tc_busy:	TC HW offload busy (rules loaded)
+ * @xdp_offload:    offload an XDP program
  */
 struct nfp_app_type {
 	enum nfp_app_id id;
@@ -63,8 +71,17 @@ struct nfp_app_type {
 
 	int (*init)(struct nfp_app *app);
 
+	const char *(*extra_cap)(struct nfp_app *app, struct nfp_net *nn);
+
 	int (*vnic_init)(struct nfp_app *app, struct nfp_net *nn,
 			 unsigned int id);
+	void (*vnic_clean)(struct nfp_app *app, struct nfp_net *nn);
+
+	int (*setup_tc)(struct nfp_app *app, struct net_device *netdev,
+			u32 handle, __be16 proto, struct tc_to_netdev *tc);
+	bool (*tc_busy)(struct nfp_app *app, struct nfp_net *nn);
+	int (*xdp_offload)(struct nfp_app *app, struct nfp_net *nn,
+			   struct bpf_prog *prog);
 };
 
 /**
@@ -95,6 +112,12 @@ static inline int nfp_app_vnic_init(struct nfp_app *app, struct nfp_net *nn,
 	return app->type->vnic_init(app, nn, id);
 }
 
+static inline void nfp_app_vnic_clean(struct nfp_app *app, struct nfp_net *nn)
+{
+	if (app->type->vnic_clean)
+		app->type->vnic_clean(app, nn);
+}
+
 static inline const char *nfp_app_name(struct nfp_app *app)
 {
 	if (!app)
@@ -102,6 +125,44 @@ static inline const char *nfp_app_name(struct nfp_app *app)
 	return app->type->name;
 }
 
+static inline const char *nfp_app_extra_cap(struct nfp_app *app,
+					    struct nfp_net *nn)
+{
+	if (!app || !app->type->extra_cap)
+		return "";
+	return app->type->extra_cap(app, nn);
+}
+
+static inline bool nfp_app_has_tc(struct nfp_app *app)
+{
+	return app && app->type->setup_tc;
+}
+
+static inline bool nfp_app_tc_busy(struct nfp_app *app, struct nfp_net *nn)
+{
+	if (!app || !app->type->tc_busy)
+		return false;
+	return app->type->tc_busy(app, nn);
+}
+
+static inline int nfp_app_setup_tc(struct nfp_app *app,
+				   struct net_device *netdev,
+				   u32 handle, __be16 proto,
+				   struct tc_to_netdev *tc)
+{
+	if (!app || !app->type->setup_tc)
+		return -EOPNOTSUPP;
+	return app->type->setup_tc(app, netdev, handle, proto, tc);
+}
+
+static inline int nfp_app_xdp_offload(struct nfp_app *app, struct nfp_net *nn,
+				      struct bpf_prog *prog)
+{
+	if (!app || !app->type->xdp_offload)
+		return -EOPNOTSUPP;
+	return app->type->xdp_offload(app, nn, prog);
+}
+
 struct nfp_app *nfp_app_alloc(struct nfp_pf *pf, enum nfp_app_id id);
 void nfp_app_free(struct nfp_app *app);