HID: rename struct hid_bpf_ops into hid_ops

Those operations are the ones from HID, not HID-BPF, and I'd like to
reuse hid_bpf_ops as the user facing struct_ops API.

Link: https://lore.kernel.org/r/20240608-hid_bpf_struct_ops-v3-1-6ac6ade58329@kernel.orgSigned-off-by: Benjamin Tissoires <bentiss@kernel.org>

drivers/hid/bpf/hid_bpf_dispatch.c

@@ -21,8 +21,8 @@
 #include "hid_bpf_dispatch.h"
 #include "entrypoints/entrypoints.lskel.h"
 
-struct hid_bpf_ops *hid_bpf_ops;
-EXPORT_SYMBOL(hid_bpf_ops);
+struct hid_ops *hid_ops;
+EXPORT_SYMBOL(hid_ops);
 
 /**
  * hid_bpf_device_event - Called whenever an event is coming in from the device
@@ -284,13 +284,13 @@ hid_bpf_attach_prog(unsigned int hid_id, int prog_fd, __u32 flags)
 	struct device *dev;
 	int err, fd;
 
-	if (!hid_bpf_ops)
+	if (!hid_ops)
 		return -EINVAL;
 
 	if ((flags & ~HID_BPF_FLAG_MASK))
 		return -EINVAL;
 
-	dev = bus_find_device(hid_bpf_ops->bus_type, NULL, &hid_id, device_match_id);
+	dev = bus_find_device(hid_ops->bus_type, NULL, &hid_id, device_match_id);
 	if (!dev)
 		return -EINVAL;
 
@@ -335,10 +335,10 @@ hid_bpf_allocate_context(unsigned int hid_id)
 	struct hid_bpf_ctx_kern *ctx_kern = NULL;
 	struct device *dev;
 
-	if (!hid_bpf_ops)
+	if (!hid_ops)
 		return NULL;
 
-	dev = bus_find_device(hid_bpf_ops->bus_type, NULL, &hid_id, device_match_id);
+	dev = bus_find_device(hid_ops->bus_type, NULL, &hid_id, device_match_id);
 	if (!dev)
 		return NULL;
 
@@ -386,7 +386,7 @@ __hid_bpf_hw_check_params(struct hid_bpf_ctx *ctx, __u8 *buf, size_t *buf__sz,
 	u32 report_len;
 
 	/* check arguments */
-	if (!ctx || !hid_bpf_ops || !buf)
+	if (!ctx || !hid_ops || !buf)
 		return -EINVAL;
 
 	switch (rtype) {
@@ -404,7 +404,7 @@ __hid_bpf_hw_check_params(struct hid_bpf_ctx *ctx, __u8 *buf, size_t *buf__sz,
 	hdev = (struct hid_device *)ctx->hid; /* discard const */
 
 	report_enum = hdev->report_enum + rtype;
-	report = hid_bpf_ops->hid_get_report(report_enum, buf);
+	report = hid_ops->hid_get_report(report_enum, buf);
 	if (!report)
 		return -EINVAL;
 
@@ -459,7 +459,7 @@ hid_bpf_hw_request(struct hid_bpf_ctx *ctx, __u8 *buf, size_t buf__sz,
 	if (!dma_data)
 		return -ENOMEM;
 
-	ret = hid_bpf_ops->hid_hw_raw_request(hdev,
+	ret = hid_ops->hid_hw_raw_request(hdev,
 					      dma_data[0],
 					      dma_data,
 					      size,
@@ -501,7 +501,7 @@ hid_bpf_hw_output_report(struct hid_bpf_ctx *ctx, __u8 *buf, size_t buf__sz)
 	if (!dma_data)
 		return -ENOMEM;
 
-	ret = hid_bpf_ops->hid_hw_output_report(hdev,
+	ret = hid_ops->hid_hw_output_report(hdev,
 						dma_data,
 						size);
 
@@ -534,7 +534,7 @@ hid_bpf_input_report(struct hid_bpf_ctx *ctx, enum hid_report_type type, u8 *buf
 
 	hdev = (struct hid_device *)ctx->hid; /* discard const */
 
-	return hid_bpf_ops->hid_input_report(hdev, type, buf, size, 0);
+	return hid_ops->hid_input_report(hdev, type, buf, size, 0);
 }
 __bpf_kfunc_end_defs();
 

drivers/hid/hid-core.c

@@ -2970,7 +2970,7 @@ int hid_check_keys_pressed(struct hid_device *hid)
 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
 
 #ifdef CONFIG_HID_BPF
-static struct hid_bpf_ops hid_ops = {
+static struct hid_ops __hid_ops = {
 	.hid_get_report = hid_get_report,
 	.hid_hw_raw_request = hid_hw_raw_request,
 	.hid_hw_output_report = hid_hw_output_report,
@@ -2991,7 +2991,7 @@ static int __init hid_init(void)
 	}
 
 #ifdef CONFIG_HID_BPF
-	hid_bpf_ops = &hid_ops;
+	hid_ops = &__hid_ops;
 #endif
 
 	ret = hidraw_init();
@@ -3010,7 +3010,7 @@ static int __init hid_init(void)
 static void __exit hid_exit(void)
 {
 #ifdef CONFIG_HID_BPF
-	hid_bpf_ops = NULL;
+	hid_ops = NULL;
 #endif
 	hid_debug_exit();
 	hidraw_exit();

include/linux/hid_bpf.h

@@ -97,7 +97,7 @@ enum hid_bpf_prog_type {
 
 struct hid_report_enum;
 
-struct hid_bpf_ops {
+struct hid_ops {
 	struct hid_report *(*hid_get_report)(struct hid_report_enum *report_enum, const u8 *data);
 	int (*hid_hw_raw_request)(struct hid_device *hdev,
 				  unsigned char reportnum, __u8 *buf,
@@ -110,7 +110,7 @@ struct hid_bpf_ops {
 	const struct bus_type *bus_type;
 };
 
-extern struct hid_bpf_ops *hid_bpf_ops;
+extern struct hid_ops *hid_ops;
 
 struct hid_bpf_prog_list {
 	u16 prog_idx[HID_BPF_MAX_PROGS_PER_DEV];