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26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
31 * lnet/klnds/o2iblnd/o2iblnd-idl.h
33 * Author: Eric Barton <eric@bartonsoftware.com>
35 #ifndef __LNET_O2IBLND_IDL_H__
36 #define __LNET_O2IBLND_IDL_H__
38 #include <uapi/linux/lnet/lnet-idl.h>
40 /************************************************************************
41 * IB Wire message format.
42 * These are sent in sender's byte order (i.e. receiver flips).
45 struct kib_connparams {
48 u32 ibcp_max_msg_size;
51 struct kib_immediate_msg {
52 struct lnet_hdr ibim_hdr; /* portals header */
53 char ibim_payload[0];/* piggy-backed payload */
56 struct kib_rdma_frag {
57 u32 rf_nob; /* # bytes this frag */
58 u64 rf_addr; /* CAVEAT EMPTOR: misaligned!! */
61 struct kib_rdma_desc {
62 u32 rd_key; /* local/remote key */
63 u32 rd_nfrags; /* # fragments */
64 struct kib_rdma_frag rd_frags[0]; /* buffer frags */
67 struct kib_putreq_msg {
68 struct lnet_hdr ibprm_hdr; /* portals header */
69 u64 ibprm_cookie; /* opaque completion cookie */
72 struct kib_putack_msg {
73 u64 ibpam_src_cookie;/* reflected completion cookie */
74 u64 ibpam_dst_cookie;/* opaque completion cookie */
75 struct kib_rdma_desc ibpam_rd; /* sender's sink buffer */
79 struct lnet_hdr ibgm_hdr; /* portals header */
80 u64 ibgm_cookie; /* opaque completion cookie */
81 struct kib_rdma_desc ibgm_rd; /* rdma descriptor */
84 struct kib_completion_msg {
85 u64 ibcm_cookie; /* opaque completion cookie */
86 s32 ibcm_status; /* < 0 failure: >= 0 length */
90 /* First 2 fields fixed FOR ALL TIME */
91 u32 ibm_magic; /* I'm an ibnal message */
92 u16 ibm_version; /* this is my version number */
94 u8 ibm_type; /* msg type */
95 u8 ibm_credits; /* returned credits */
96 u32 ibm_nob; /* # bytes in whole message */
97 u32 ibm_cksum; /* checksum (0 == no checksum) */
98 u64 ibm_srcnid; /* sender's NID */
99 u64 ibm_srcstamp; /* sender's incarnation */
100 u64 ibm_dstnid; /* destination's NID */
101 u64 ibm_dststamp; /* destination's incarnation */
104 struct kib_connparams connparams;
105 struct kib_immediate_msg immediate;
106 struct kib_putreq_msg putreq;
107 struct kib_putack_msg putack;
108 struct kib_get_msg get;
109 struct kib_completion_msg completion;
113 #define IBLND_MSG_MAGIC LNET_PROTO_IB_MAGIC /* unique magic */
115 #define IBLND_MSG_VERSION_1 0x11
116 #define IBLND_MSG_VERSION_2 0x12
117 #define IBLND_MSG_VERSION IBLND_MSG_VERSION_2
119 #define IBLND_MSG_CONNREQ 0xc0 /* connection request */
120 #define IBLND_MSG_CONNACK 0xc1 /* connection acknowledge */
121 #define IBLND_MSG_NOOP 0xd0 /* nothing (just credits) */
122 #define IBLND_MSG_IMMEDIATE 0xd1 /* immediate */
123 #define IBLND_MSG_PUT_REQ 0xd2 /* putreq (src->sink) */
124 #define IBLND_MSG_PUT_NAK 0xd3 /* completion (sink->src) */
125 #define IBLND_MSG_PUT_ACK 0xd4 /* putack (sink->src) */
126 #define IBLND_MSG_PUT_DONE 0xd5 /* completion (src->sink) */
127 #define IBLND_MSG_GET_REQ 0xd6 /* getreq (sink->src) */
128 #define IBLND_MSG_GET_DONE 0xd7 /* completion (src->sink: all OK) */
131 u32 ibr_magic; /* sender's magic */
132 u16 ibr_version; /* sender's version */
133 u8 ibr_why; /* reject reason */
134 u8 ibr_padding; /* padding */
135 u64 ibr_incarnation;/* incarnation of peer_ni */
136 struct kib_connparams ibr_cp; /* connection parameters */
139 /* connection rejection reasons */
140 #define IBLND_REJECT_CONN_RACE 1 /* You lost connection race */
141 #define IBLND_REJECT_NO_RESOURCES 2 /* Out of memory/conns etc */
142 #define IBLND_REJECT_FATAL 3 /* Anything else */
144 #define IBLND_REJECT_CONN_UNCOMPAT 4 /* incompatible version peer_ni */
145 #define IBLND_REJECT_CONN_STALE 5 /* stale peer_ni */
147 /* peer_ni's rdma frags doesn't match mine */
148 #define IBLND_REJECT_RDMA_FRAGS 6
149 /* peer_ni's msg queue size doesn't match mine */
150 #define IBLND_REJECT_MSG_QUEUE_SIZE 7
151 #define IBLND_REJECT_INVALID_SRV_ID 8
153 /***********************************************************************/
155 #endif /* __LNET_O2IBLND_IDL_H__ */