netdevsim: add bpf offload support
Add support for loading programs for netdevsim devices and
expose the related information via DebugFS. Both offload
of XDP and cls_bpf programs is supported.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
diff --git a/drivers/net/netdevsim/netdevsim.h b/drivers/net/netdevsim/netdevsim.h
index 4558c6f..8779e6a 100644
--- a/drivers/net/netdevsim/netdevsim.h
+++ b/drivers/net/netdevsim/netdevsim.h
@@ -14,13 +14,53 @@
*/
#include <linux/kernel.h>
+#include <linux/list.h>
#include <linux/netdevice.h>
#include <linux/u64_stats_sync.h>
#define DRV_NAME "netdevsim"
+#define NSIM_XDP_MAX_MTU 4000
+
+#define NSIM_EA(extack, msg) NL_SET_ERR_MSG_MOD((extack), msg)
+
+struct bpf_prog;
+struct dentry;
+
struct netdevsim {
+ struct net_device *netdev;
+
u64 tx_packets;
u64 tx_bytes;
struct u64_stats_sync syncp;
+
+ struct dentry *ddir;
+
+ struct bpf_prog *bpf_offloaded;
+ u32 bpf_offloaded_id;
+
+ u32 xdp_flags;
+ int xdp_prog_mode;
+ struct bpf_prog *xdp_prog;
+
+ u32 prog_id_gen;
+
+ bool bpf_bind_accept;
+ u32 bpf_bind_verifier_delay;
+ struct dentry *ddir_bpf_bound_progs;
+ struct list_head bpf_bound_progs;
+
+ bool bpf_tc_accept;
+ bool bpf_tc_non_bound_accept;
+ bool bpf_xdpdrv_accept;
+ bool bpf_xdpoffload_accept;
};
+
+extern struct dentry *nsim_ddir;
+
+int nsim_bpf_init(struct netdevsim *ns);
+void nsim_bpf_uninit(struct netdevsim *ns);
+int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf);
+int nsim_bpf_disable_tc(struct netdevsim *ns);
+int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type,
+ void *type_data, void *cb_priv);