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// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
/*
* Copyright(c) 2020 Intel Corporation.
*
*/
/*
* This file contains HFI1 support for netdev RX functionality
*/
#include "sdma.h"
#include "verbs.h"
#include "netdev.h"
#include "hfi.h"
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <rdma/ib_verbs.h>
/**
* hfi1_netdev_add_data - Registers data with unique identifier
* to be requested later this is needed for VNIC and IPoIB VLANs
* implementations.
* This call is protected by mutex idr_lock.
*
* @dd: hfi1 dev data
* @id: requested integer id up to INT_MAX
* @data: data to be associated with index
*/
int hfi1_netdev_add_data(struct hfi1_devdata *dd, int id, void *data)
{
struct hfi1_netdev_priv *priv = hfi1_netdev_priv(dd->dummy_netdev);
return xa_insert(&priv->dev_tbl, id, data, GFP_NOWAIT);
}
/**
* hfi1_netdev_remove_data - Removes data with previously given id.
* Returns the reference to removed entry.
*
* @dd: hfi1 dev data
* @id: requested integer id up to INT_MAX
*/
void *hfi1_netdev_remove_data(struct hfi1_devdata *dd, int id)
{
struct hfi1_netdev_priv *priv = hfi1_netdev_priv(dd->dummy_netdev);
return xa_erase(&priv->dev_tbl, id);
}
/**
* hfi1_netdev_get_data - Gets data with given id
*
* @dd: hfi1 dev data
* @id: requested integer id up to INT_MAX
*/
void *hfi1_netdev_get_data(struct hfi1_devdata *dd, int id)
{
struct hfi1_netdev_priv *priv = hfi1_netdev_priv(dd->dummy_netdev);
return xa_load(&priv->dev_tbl, id);
}
/**
* hfi1_netdev_get_first_dat - Gets first entry with greater or equal id.
*
* @dd: hfi1 dev data
* @id: requested integer id up to INT_MAX
*/
void *hfi1_netdev_get_first_data(struct hfi1_devdata *dd, int *start_id)
{
struct hfi1_netdev_priv *priv = hfi1_netdev_priv(dd->dummy_netdev);
unsigned long index = *start_id;
void *ret;
ret = xa_find(&priv->dev_tbl, &index, UINT_MAX, XA_PRESENT);
*start_id = (int)index;
return ret;
}
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