2 * Copyright (c) 2005-2014 Intel Corporation. All rights reserved.
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
41 #include <infiniband/endian.h>
42 #include <semaphore.h>
43 #include <stdatomic.h>
45 #include <rdma/rdma_cma.h>
46 #include <infiniband/ib.h>
48 #define PFX "librdmacm: "
51 * Fast synchronization for low contention locking.
57 static inline void fastlock_init(fastlock_t *lock)
59 sem_init(&lock->sem, 0, 0);
60 atomic_store(&lock->cnt, 0);
62 static inline void fastlock_destroy(fastlock_t *lock)
64 sem_destroy(&lock->sem);
66 static inline void fastlock_acquire(fastlock_t *lock)
68 if (atomic_fetch_add(&lock->cnt, 1) > 0)
71 static inline void fastlock_release(fastlock_t *lock)
73 if (atomic_fetch_sub(&lock->cnt, 1) > 1)
77 __be16 ucma_get_port(struct sockaddr *addr);
78 int ucma_addrlen(struct sockaddr *addr);
79 void ucma_set_sid(enum rdma_port_space ps, struct sockaddr *addr,
80 struct sockaddr_ib *sib);
81 int ucma_max_qpsize(struct rdma_cm_id *id);
82 int ucma_complete(struct rdma_cm_id *id);
83 int ucma_shutdown(struct rdma_cm_id *id);
85 static inline int ERR(int err)
92 extern int af_ib_support;
94 #define RAI_ROUTEONLY 0x01000000
96 void ucma_ib_init(void);
97 void ucma_ib_cleanup(void);
98 void ucma_ib_resolve(struct rdma_addrinfo **rai,
99 const struct rdma_addrinfo *hints);
101 struct ib_connect_hdr {
103 uint8_t ip_version; /* IP version: 7:4 */
105 uint32_t src_addr[4];
106 uint32_t dst_addr[4];
107 #define cma_src_ip4 src_addr[3]
108 #define cma_src_ip6 src_addr[0]
109 #define cma_dst_ip4 dst_addr[3]
110 #define cma_dst_ip6 dst_addr[0]