1/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
2/*
3 * Copyright (c) 2004 Topspin Communications. All rights reserved.
4 * Copyright (c) 2005 Intel Corporation. All rights reserved.
5 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
6 */
7
8#ifndef _IB_CACHE_H
9#define _IB_CACHE_H
10
11#include <rdma/ib_verbs.h>
12
13int rdma_query_gid(struct ib_device *device, u32 port_num, int index,
14 union ib_gid *gid);
15void *rdma_read_gid_hw_context(const struct ib_gid_attr *attr);
16const struct ib_gid_attr *rdma_find_gid(struct ib_device *device,
17 const union ib_gid *gid,
18 enum ib_gid_type gid_type,
19 struct net_device *ndev);
20const struct ib_gid_attr *rdma_find_gid_by_port(struct ib_device *ib_dev,
21 const union ib_gid *gid,
22 enum ib_gid_type gid_type,
23 u32 port,
24 struct net_device *ndev);
25const struct ib_gid_attr *rdma_find_gid_by_filter(
26 struct ib_device *device, const union ib_gid *gid, u32 port_num,
27 bool (*filter)(const union ib_gid *gid, const struct ib_gid_attr *,
28 void *),
29 void *context);
30
31int rdma_read_gid_l2_fields(const struct ib_gid_attr *attr,
32 u16 *vlan_id, u8 *smac);
33struct net_device *rdma_read_gid_attr_ndev_rcu(const struct ib_gid_attr *attr);
34
35/**
36 * ib_get_cached_pkey - Returns a cached PKey table entry
37 * @device: The device to query.
38 * @port_num: The port number of the device to query.
39 * @index: The index into the cached PKey table to query.
40 * @pkey: The PKey value found at the specified index.
41 *
42 * ib_get_cached_pkey() fetches the specified PKey table entry stored in
43 * the local software cache.
44 */
45int ib_get_cached_pkey(struct ib_device *device_handle,
46 u32 port_num,
47 int index,
48 u16 *pkey);
49
50/**
51 * ib_find_cached_pkey - Returns the PKey table index where a specified
52 * PKey value occurs.
53 * @device: The device to query.
54 * @port_num: The port number of the device to search for the PKey.
55 * @pkey: The PKey value to search for.
56 * @index: The index into the cached PKey table where the PKey was found.
57 *
58 * ib_find_cached_pkey() searches the specified PKey table in
59 * the local software cache.
60 */
61int ib_find_cached_pkey(struct ib_device *device,
62 u32 port_num,
63 u16 pkey,
64 u16 *index);
65
66/**
67 * ib_get_cached_lmc - Returns a cached lmc table entry
68 * @device: The device to query.
69 * @port_num: The port number of the device to query.
70 * @lmc: The lmc value for the specified port for that device.
71 *
72 * ib_get_cached_lmc() fetches the specified lmc table entry stored in
73 * the local software cache.
74 */
75int ib_get_cached_lmc(struct ib_device *device,
76 u32 port_num,
77 u8 *lmc);
78
79/**
80 * ib_get_cached_port_state - Returns a cached port state table entry
81 * @device: The device to query.
82 * @port_num: The port number of the device to query.
83 * @port_state: port_state for the specified port for that device.
84 *
85 * ib_get_cached_port_state() fetches the specified port_state table entry stored in
86 * the local software cache.
87 */
88int ib_get_cached_port_state(struct ib_device *device,
89 u32 port_num,
90 enum ib_port_state *port_active);
91
92bool rdma_is_zero_gid(const union ib_gid *gid);
93const struct ib_gid_attr *rdma_get_gid_attr(struct ib_device *device,
94 u32 port_num, int index);
95void rdma_put_gid_attr(const struct ib_gid_attr *attr);
96void rdma_hold_gid_attr(const struct ib_gid_attr *attr);
97ssize_t rdma_query_gid_table(struct ib_device *device,
98 struct ib_uverbs_gid_entry *entries,
99 size_t max_entries);
100
101#endif /* _IB_CACHE_H */
102

source code of linux/include/rdma/ib_cache.h