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fab97220 HS |
1 | /* |
2 | * IBM eServer eHCA Infiniband device driver for Linux on POWER | |
3 | * | |
4 | * mcast functions | |
5 | * | |
6 | * Authors: Khadija Souissi <souissik@de.ibm.com> | |
7 | * Waleri Fomin <fomin@de.ibm.com> | |
8 | * Reinhard Ernst <rernst@de.ibm.com> | |
9 | * Hoang-Nam Nguyen <hnguyen@de.ibm.com> | |
10 | * Heiko J Schick <schickhj@de.ibm.com> | |
11 | * | |
12 | * Copyright (c) 2005 IBM Corporation | |
13 | * | |
14 | * All rights reserved. | |
15 | * | |
16 | * This source code is distributed under a dual license of GPL v2.0 and OpenIB | |
17 | * BSD. | |
18 | * | |
19 | * OpenIB BSD License | |
20 | * | |
21 | * Redistribution and use in source and binary forms, with or without | |
22 | * modification, are permitted provided that the following conditions are met: | |
23 | * | |
24 | * Redistributions of source code must retain the above copyright notice, this | |
25 | * list of conditions and the following disclaimer. | |
26 | * | |
27 | * Redistributions in binary form must reproduce the above copyright notice, | |
28 | * this list of conditions and the following disclaimer in the documentation | |
29 | * and/or other materials | |
30 | * provided with the distribution. | |
31 | * | |
32 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
33 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
34 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
35 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
36 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
37 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
38 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
39 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER | |
40 | * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
41 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
42 | * POSSIBILITY OF SUCH DAMAGE. | |
43 | */ | |
44 | ||
45 | #include <linux/module.h> | |
46 | #include <linux/err.h> | |
47 | #include "ehca_classes.h" | |
48 | #include "ehca_tools.h" | |
49 | #include "ehca_qes.h" | |
50 | #include "ehca_iverbs.h" | |
51 | #include "hcp_if.h" | |
52 | ||
53 | #define MAX_MC_LID 0xFFFE | |
54 | #define MIN_MC_LID 0xC000 /* Multicast limits */ | |
55 | #define EHCA_VALID_MULTICAST_GID(gid) ((gid)[0] == 0xFF) | |
56 | #define EHCA_VALID_MULTICAST_LID(lid) \ | |
57 | (((lid) >= MIN_MC_LID) && ((lid) <= MAX_MC_LID)) | |
58 | ||
59 | int ehca_attach_mcast(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) | |
60 | { | |
61 | struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp); | |
62 | struct ehca_shca *shca = container_of(ibqp->device, struct ehca_shca, | |
63 | ib_device); | |
64 | union ib_gid my_gid; | |
65 | u64 subnet_prefix, interface_id, h_ret; | |
66 | ||
67 | if (ibqp->qp_type != IB_QPT_UD) { | |
68 | ehca_err(ibqp->device, "invalid qp_type=%x", ibqp->qp_type); | |
69 | return -EINVAL; | |
70 | } | |
71 | ||
72 | if (!(EHCA_VALID_MULTICAST_GID(gid->raw))) { | |
73 | ehca_err(ibqp->device, "invalid mulitcast gid"); | |
74 | return -EINVAL; | |
75 | } else if ((lid < MIN_MC_LID) || (lid > MAX_MC_LID)) { | |
76 | ehca_err(ibqp->device, "invalid mulitcast lid=%x", lid); | |
77 | return -EINVAL; | |
78 | } | |
79 | ||
80 | memcpy(&my_gid.raw, gid->raw, sizeof(union ib_gid)); | |
81 | ||
82 | subnet_prefix = be64_to_cpu(my_gid.global.subnet_prefix); | |
83 | interface_id = be64_to_cpu(my_gid.global.interface_id); | |
84 | h_ret = hipz_h_attach_mcqp(shca->ipz_hca_handle, | |
85 | my_qp->ipz_qp_handle, | |
86 | my_qp->galpas.kernel, | |
87 | lid, subnet_prefix, interface_id); | |
88 | if (h_ret != H_SUCCESS) | |
89 | ehca_err(ibqp->device, | |
90 | "ehca_qp=%p qp_num=%x hipz_h_attach_mcqp() failed " | |
3750f605 | 91 | "h_ret=%lli", my_qp, ibqp->qp_num, h_ret); |
fab97220 HS |
92 | |
93 | return ehca2ib_return_code(h_ret); | |
94 | } | |
95 | ||
96 | int ehca_detach_mcast(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) | |
97 | { | |
98 | struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp); | |
99 | struct ehca_shca *shca = container_of(ibqp->pd->device, | |
100 | struct ehca_shca, ib_device); | |
101 | union ib_gid my_gid; | |
102 | u64 subnet_prefix, interface_id, h_ret; | |
103 | ||
104 | if (ibqp->qp_type != IB_QPT_UD) { | |
105 | ehca_err(ibqp->device, "invalid qp_type %x", ibqp->qp_type); | |
106 | return -EINVAL; | |
107 | } | |
108 | ||
109 | if (!(EHCA_VALID_MULTICAST_GID(gid->raw))) { | |
110 | ehca_err(ibqp->device, "invalid mulitcast gid"); | |
111 | return -EINVAL; | |
112 | } else if ((lid < MIN_MC_LID) || (lid > MAX_MC_LID)) { | |
113 | ehca_err(ibqp->device, "invalid mulitcast lid=%x", lid); | |
114 | return -EINVAL; | |
115 | } | |
116 | ||
117 | memcpy(&my_gid.raw, gid->raw, sizeof(union ib_gid)); | |
118 | ||
119 | subnet_prefix = be64_to_cpu(my_gid.global.subnet_prefix); | |
120 | interface_id = be64_to_cpu(my_gid.global.interface_id); | |
121 | h_ret = hipz_h_detach_mcqp(shca->ipz_hca_handle, | |
122 | my_qp->ipz_qp_handle, | |
123 | my_qp->galpas.kernel, | |
124 | lid, subnet_prefix, interface_id); | |
125 | if (h_ret != H_SUCCESS) | |
126 | ehca_err(ibqp->device, | |
127 | "ehca_qp=%p qp_num=%x hipz_h_detach_mcqp() failed " | |
3750f605 | 128 | "h_ret=%lli", my_qp, ibqp->qp_num, h_ret); |
fab97220 HS |
129 | |
130 | return ehca2ib_return_code(h_ret); | |
131 | } |