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/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
/*
* Copyright (c) 2004 Topspin Communications. All rights reserved.
* Copyright (c) 2005 Intel Corporation. All rights reserved.
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
*/
#ifndef _IB_CACHE_H
#define _IB_CACHE_H
#include <rdma/ib_verbs.h>
int rdma_query_gid(struct ib_device *device, u8 port_num, int index,
union ib_gid *gid);
void *rdma_read_gid_hw_context(const struct ib_gid_attr *attr);
const struct ib_gid_attr *rdma_find_gid(struct ib_device *device,
const union ib_gid *gid,
enum ib_gid_type gid_type,
struct net_device *ndev);
const struct ib_gid_attr *rdma_find_gid_by_port(struct ib_device *ib_dev,
const union ib_gid *gid,
enum ib_gid_type gid_type,
u8 port,
struct net_device *ndev);
const struct ib_gid_attr *rdma_find_gid_by_filter(
struct ib_device *device, const union ib_gid *gid, u8 port_num,
bool (*filter)(const union ib_gid *gid, const struct ib_gid_attr *,
void *),
void *context);
int rdma_read_gid_l2_fields(const struct ib_gid_attr *attr,
u16 *vlan_id, u8 *smac);
struct net_device *rdma_read_gid_attr_ndev_rcu(const struct ib_gid_attr *attr);
/**
* ib_get_cached_pkey - Returns a cached PKey table entry
* @device: The device to query.
* @port_num: The port number of the device to query.
* @index: The index into the cached PKey table to query.
* @pkey: The PKey value found at the specified index.
*
* ib_get_cached_pkey() fetches the specified PKey table entry stored in
* the local software cache.
*/
int ib_get_cached_pkey(struct ib_device *device_handle,
u8 port_num,
int index,
u16 *pkey);
/**
* ib_find_cached_pkey - Returns the PKey table index where a specified
* PKey value occurs.
* @device: The device to query.
* @port_num: The port number of the device to search for the PKey.
* @pkey: The PKey value to search for.
* @index: The index into the cached PKey table where the PKey was found.
*
* ib_find_cached_pkey() searches the specified PKey table in
* the local software cache.
*/
int ib_find_cached_pkey(struct ib_device *device,
u8 port_num,
u16 pkey,
u16 *index);
/**
* ib_find_exact_cached_pkey - Returns the PKey table index where a specified
* PKey value occurs. Comparison uses the FULL 16 bits (incl membership bit)
* @device: The device to query.
* @port_num: The port number of the device to search for the PKey.
* @pkey: The PKey value to search for.
* @index: The index into the cached PKey table where the PKey was found.
*
* ib_find_exact_cached_pkey() searches the specified PKey table in
* the local software cache.
*/
int ib_find_exact_cached_pkey(struct ib_device *device,
u8 port_num,
u16 pkey,
u16 *index);
/**
* ib_get_cached_lmc - Returns a cached lmc table entry
* @device: The device to query.
* @port_num: The port number of the device to query.
* @lmc: The lmc value for the specified port for that device.
*
* ib_get_cached_lmc() fetches the specified lmc table entry stored in
* the local software cache.
*/
int ib_get_cached_lmc(struct ib_device *device,
u8 port_num,
u8 *lmc);
/**
* ib_get_cached_port_state - Returns a cached port state table entry
* @device: The device to query.
* @port_num: The port number of the device to query.
* @port_state: port_state for the specified port for that device.
*
* ib_get_cached_port_state() fetches the specified port_state table entry stored in
* the local software cache.
*/
int ib_get_cached_port_state(struct ib_device *device,
u8 port_num,
enum ib_port_state *port_active);
bool rdma_is_zero_gid(const union ib_gid *gid);
const struct ib_gid_attr *rdma_get_gid_attr(struct ib_device *device,
u8 port_num, int index);
void rdma_put_gid_attr(const struct ib_gid_attr *attr);
void rdma_hold_gid_attr(const struct ib_gid_attr *attr);
#endif /* _IB_CACHE_H */
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