hid/bpf/hid_bpf_jmp_table.c

35 	struct hid_device *hdev;
75 static int hid_bpf_program_count(struct hid_device *hdev,
90 		if (hdev && entry->hdev != hdev)
107 int hid_bpf_prog_run(struct hid_device *hdev, enum hid_bpf_prog_type type,
114 	prog_list = rcu_dereference(hdev->bpf.progs[type]);
142 static void __hid_bpf_set_hdev_progs(struct hid_device *hdev, struct hid_bpf_prog_list *new_list,
147 	spin_lock(&hdev->bpf.progs_lock);
148 	old_list = rcu_dereference_protected(hdev->bpf.progs[type],
149 					     lockdep_is_held(&hdev->bpf.progs_lock));
150 	rcu_assign_pointer(hdev->bpf.progs[type], new_list);
151 	spin_unlock(&hdev->bpf.progs_lock);
162 static int hid_bpf_populate_hdev(struct hid_device *hdev, enum hid_bpf_prog_type type)
167 	if (type >= HID_BPF_PROG_TYPE_MAX || !hdev)
170 	if (hdev->bpf.destroyed)
180 		if (entry->type == type && entry->hdev == hdev &&
185 	__hid_bpf_set_hdev_progs(hdev, new_list, type);
215 		struct hid_device *hdev;
221 		if (entry->hdev) {
222 			hdev = entry->hdev;
225 			 * hdev is still valid, even if we are called after hid_destroy_device():
229 			hdev_destroyed = hdev->bpf.destroyed;
231 			hid_bpf_populate_hdev(hdev, type);
233 			/* mark all other disabled progs from hdev of the given type as detached */
242 				if (next->hdev == hdev && next->type == type) {
244 					 * clear the hdev reference and decrement the device ref
248 					next->hdev = NULL;
249 					put_device(&hdev->dev);
255 				hid_bpf_reconnect(hdev);
397 __hid_bpf_attach_prog(struct hid_device *hdev, enum hid_bpf_prog_type prog_type,
417 	cnt = hid_bpf_program_count(hdev, NULL, prog_type);
448 	prog_entry->hdev = hdev;
452 	err = hid_bpf_populate_hdev(hdev, prog_type);
476 void __hid_bpf_destroy_device(struct hid_device *hdev)
484 		prog_list = rcu_dereference(hdev->bpf.progs[type]);
496 		__hid_bpf_set_hdev_progs(hdev, NULL, type);