transport.c (0337966d121ebebf73a1c346123e8112796e684e) transport.c (eee2fa6ab3225192d6d894c54a6fb02ac9efdff6)
1/*
1/*
2 * Copyright (c) 2006 Oracle. All rights reserved.
2 * Copyright (c) 2006, 2017 Oracle and/or its affiliates. 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

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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#include <linux/kernel.h>
34#include <linux/module.h>
35#include <linux/in.h>
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

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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#include <linux/kernel.h>
34#include <linux/module.h>
35#include <linux/in.h>
36#include <linux/ipv6.h>
36
37#include "rds.h"
38#include "loop.h"
39
40static struct rds_transport *transports[RDS_TRANS_COUNT];
41static DECLARE_RWSEM(rds_trans_sem);
42
43void rds_trans_register(struct rds_transport *trans)

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70EXPORT_SYMBOL_GPL(rds_trans_unregister);
71
72void rds_trans_put(struct rds_transport *trans)
73{
74 if (trans)
75 module_put(trans->t_owner);
76}
77
37
38#include "rds.h"
39#include "loop.h"
40
41static struct rds_transport *transports[RDS_TRANS_COUNT];
42static DECLARE_RWSEM(rds_trans_sem);
43
44void rds_trans_register(struct rds_transport *trans)

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71EXPORT_SYMBOL_GPL(rds_trans_unregister);
72
73void rds_trans_put(struct rds_transport *trans)
74{
75 if (trans)
76 module_put(trans->t_owner);
77}
78
78struct rds_transport *rds_trans_get_preferred(struct net *net, __be32 addr)
79struct rds_transport *rds_trans_get_preferred(struct net *net,
80 const struct in6_addr *addr,
81 __u32 scope_id)
79{
80 struct rds_transport *ret = NULL;
81 struct rds_transport *trans;
82 unsigned int i;
83
82{
83 struct rds_transport *ret = NULL;
84 struct rds_transport *trans;
85 unsigned int i;
86
84 if (IN_LOOPBACK(ntohl(addr)))
87 if (ipv6_addr_v4mapped(addr)) {
88 if (*(u_int8_t *)&addr->s6_addr32[3] == IN_LOOPBACKNET)
89 return &rds_loop_transport;
90 } else if (ipv6_addr_loopback(addr)) {
85 return &rds_loop_transport;
91 return &rds_loop_transport;
92 }
86
87 down_read(&rds_trans_sem);
88 for (i = 0; i < RDS_TRANS_COUNT; i++) {
89 trans = transports[i];
90
93
94 down_read(&rds_trans_sem);
95 for (i = 0; i < RDS_TRANS_COUNT; i++) {
96 trans = transports[i];
97
91 if (trans && (trans->laddr_check(net, addr) == 0) &&
98 if (trans && (trans->laddr_check(net, addr, scope_id) == 0) &&
92 (!trans->t_owner || try_module_get(trans->t_owner))) {
93 ret = trans;
94 break;
95 }
96 }
97 up_read(&rds_trans_sem);
98
99 return ret;

--- 56 unchanged lines hidden --- 		99 (!trans->t_owner || try_module_get(trans->t_owner))) {
100 ret = trans;
101 break;
102 }
103 }
104 up_read(&rds_trans_sem);
105
106 return ret;

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