LXR linux/include/rdma/ib.h

   1/*
   2 * Copyright (c) 2010 Intel Corporation.  All rights reserved.
   3 *
   4 * This software is available to you under a choice of one of two
   5 * licenses.  You may choose to be licensed under the terms of the GNU
   6 * General Public License (GPL) Version 2, available from the file
   7 * COPYING in the main directory of this source tree, or the
   8 * OpenIB.org BSD license below:
   9 *
  10 *     Redistribution and use in source and binary forms, with or
  11 *     without modification, are permitted provided that the following
  12 *     conditions are met:
  13 *
  14 *      - Redistributions of source code must retain the above
  15 *        copyright notice, this list of conditions and the following
  16 *        disclaimer.
  17 *
  18 *      - Redistributions in binary form must reproduce the above
  19 *        copyright notice, this list of conditions and the following
  20 *        disclaimer in the documentation and/or other materials
  21 *        provided with the distribution.
  22 *
  23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30 * SOFTWARE.
  31 */
  32
  33#if !defined(_RDMA_IB_H)
  34#define _RDMA_IB_H
  35
  36#include <linux/types.h>
  37
  38struct ib_addr {
  39        union {
  40                __u8            uib_addr8[16];
  41                __be16          uib_addr16[8];
  42                __be32          uib_addr32[4];
  43                __be64          uib_addr64[2];
  44        } ib_u;
  45#define sib_addr8               ib_u.uib_addr8
  46#define sib_addr16              ib_u.uib_addr16
  47#define sib_addr32              ib_u.uib_addr32
  48#define sib_addr64              ib_u.uib_addr64
  49#define sib_raw                 ib_u.uib_addr8
  50#define sib_subnet_prefix       ib_u.uib_addr64[0]
  51#define sib_interface_id        ib_u.uib_addr64[1]
  52};
  53
  54static inline int ib_addr_any(const struct ib_addr *a)
  55{
  56        return ((a->sib_addr64[0] | a->sib_addr64[1]) == 0);
  57}
  58
  59static inline int ib_addr_loopback(const struct ib_addr *a)
  60{
  61        return ((a->sib_addr32[0] | a->sib_addr32[1] |
  62                 a->sib_addr32[2] | (a->sib_addr32[3] ^ htonl(1))) == 0);
  63}
  64
  65static inline void ib_addr_set(struct ib_addr *addr,
  66                               __be32 w1, __be32 w2, __be32 w3, __be32 w4)
  67{
  68        addr->sib_addr32[0] = w1;
  69        addr->sib_addr32[1] = w2;
  70        addr->sib_addr32[2] = w3;
  71        addr->sib_addr32[3] = w4;
  72}
  73
  74static inline int ib_addr_cmp(const struct ib_addr *a1, const struct ib_addr *a2)
  75{
  76        return memcmp(a1, a2, sizeof(struct ib_addr));
  77}
  78
  79struct sockaddr_ib {
  80        unsigned short int      sib_family;     /* AF_IB */
  81        __be16                  sib_pkey;
  82        __be32                  sib_flowinfo;
  83        struct ib_addr          sib_addr;
  84        __be64                  sib_sid;
  85        __be64                  sib_sid_mask;
  86        __u64                   sib_scope_id;
  87};
  88
  89#endif /* _RDMA_IB_H */
  90