// SPDX-License-Identifier: GPL-2.0
/*
* Generic netlink for DPLL management framework
*
* Copyright (c) 2023 Meta Platforms, Inc. and affiliates
* Copyright (c) 2023 Intel and affiliates
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <net/genetlink.h>
#include "dpll_core.h"
#include "dpll_netlink.h"
#include "dpll_nl.h"
#include <uapi/linux/dpll.h>
#define ASSERT_NOT_NULL(ptr) (WARN_ON(!ptr))
#define xa_for_each_marked_start(xa, index, entry, filter, start) \
for (index = start, entry = xa_find(xa, &index, ULONG_MAX, filter); \
entry; entry = xa_find_after(xa, &index, ULONG_MAX, filter))
struct dpll_dump_ctx {
unsigned long idx;
};
static struct dpll_dump_ctx *dpll_dump_context(struct netlink_callback *cb)
{
return (struct dpll_dump_ctx *)cb->ctx;
}
static int
dpll_msg_add_dev_handle(struct sk_buff *msg, struct dpll_device *dpll)
{
if (nla_put_u32(msg, DPLL_A_ID, dpll->id))
return -EMSGSIZE;
return 0;
}
static int
dpll_msg_add_dev_parent_handle(struct sk_buff *msg, u32 id)
{
if (nla_put_u32(msg, DPLL_A_PIN_PARENT_ID, id))
return -EMSGSIZE;
return 0;
}
/**
* dpll_msg_pin_handle_size - get size of pin handle attribute for given pin
* @pin: pin pointer
*
* Return: byte size of pin handle attribute for given pin.
*/
size_t dpll_msg_pin_handle_size(struct dpll_pin *pin)
{
return pin ? nla_total_size(4) : 0; /* DPLL_A_PIN_ID */
}
EXPORT_SYMBOL_GPL(dpll_msg_pin_handle_size);
/**
* dpll_msg_add_pin_handle - attach pin handle attribute to a given message
* @msg: pointer to sk_buff message to attach a pin handle
* @pin: pin pointer
