ib_cache.h

  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 */