| /* |
| * GPL HEADER START |
| * |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 only, |
| * as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License version 2 for more details (a copy is included |
| * in the LICENSE file that accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License |
| * version 2 along with this program; If not, see |
| * http://www.gnu.org/licenses/gpl-2.0.html |
| * |
| * GPL HEADER END |
| */ |
| /* |
| * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Use is subject to license terms. |
| * |
| * Copyright (c) 2012 - 2015, Intel Corporation. |
| */ |
| /* |
| * This file is part of Lustre, http://www.lustre.org/ |
| * Lustre is a trademark of Seagate, Inc. |
| */ |
| |
| #ifndef __LNET_TYPES_H__ |
| #define __LNET_TYPES_H__ |
| |
| #include <linux/types.h> |
| |
| /** \addtogroup lnet |
| * @{ |
| */ |
| |
| #define LNET_VERSION "0.6.0" |
| |
| /** \addtogroup lnet_addr |
| * @{ |
| */ |
| |
| /** Portal reserved for LNet's own use. |
| * \see lustre/include/lustre/lustre_idl.h for Lustre portal assignments. |
| */ |
| #define LNET_RESERVED_PORTAL 0 |
| |
| /** |
| * Address of an end-point in an LNet network. |
| * |
| * A node can have multiple end-points and hence multiple addresses. |
| * An LNet network can be a simple network (e.g. tcp0) or a network of |
| * LNet networks connected by LNet routers. Therefore an end-point address |
| * has two parts: network ID, and address within a network. |
| * |
| * \see LNET_NIDNET, LNET_NIDADDR, and LNET_MKNID. |
| */ |
| typedef __u64 lnet_nid_t; |
| /** |
| * ID of a process in a node. Shortened as PID to distinguish from |
| * lnet_process_id_t, the global process ID. |
| */ |
| typedef __u32 lnet_pid_t; |
| |
| /** wildcard NID that matches any end-point address */ |
| #define LNET_NID_ANY ((lnet_nid_t)(-1)) |
| /** wildcard PID that matches any lnet_pid_t */ |
| #define LNET_PID_ANY ((lnet_pid_t)(-1)) |
| |
| #define LNET_PID_RESERVED 0xf0000000 /* reserved bits in PID */ |
| #define LNET_PID_USERFLAG 0x80000000 /* set in userspace peers */ |
| #define LNET_PID_LUSTRE 12345 |
| |
| #define LNET_TIME_FOREVER (-1) |
| |
| /* how an LNET NID encodes net:address */ |
| /** extract the address part of an lnet_nid_t */ |
| |
| static inline __u32 LNET_NIDADDR(lnet_nid_t nid) |
| { |
| return nid & 0xffffffff; |
| } |
| |
| static inline __u32 LNET_NIDNET(lnet_nid_t nid) |
| { |
| return (nid >> 32) & 0xffffffff; |
| } |
| |
| static inline lnet_nid_t LNET_MKNID(__u32 net, __u32 addr) |
| { |
| return (((__u64)net) << 32) | addr; |
| } |
| |
| static inline __u32 LNET_NETNUM(__u32 net) |
| { |
| return net & 0xffff; |
| } |
| |
| static inline __u32 LNET_NETTYP(__u32 net) |
| { |
| return (net >> 16) & 0xffff; |
| } |
| |
| static inline __u32 LNET_MKNET(__u32 type, __u32 num) |
| { |
| return (type << 16) | num; |
| } |
| |
| #define WIRE_ATTR __packed |
| |
| /* Packed version of lnet_process_id_t to transfer via network */ |
| typedef struct { |
| /* node id / process id */ |
| lnet_nid_t nid; |
| lnet_pid_t pid; |
| } WIRE_ATTR lnet_process_id_packed_t; |
| |
| /* |
| * The wire handle's interface cookie only matches one network interface in |
| * one epoch (i.e. new cookie when the interface restarts or the node |
| * reboots). The object cookie only matches one object on that interface |
| * during that object's lifetime (i.e. no cookie re-use). |
| */ |
| typedef struct { |
| __u64 wh_interface_cookie; |
| __u64 wh_object_cookie; |
| } WIRE_ATTR lnet_handle_wire_t; |
| |
| typedef enum { |
| LNET_MSG_ACK = 0, |
| LNET_MSG_PUT, |
| LNET_MSG_GET, |
| LNET_MSG_REPLY, |
| LNET_MSG_HELLO, |
| } lnet_msg_type_t; |
| |
| /* |
| * The variant fields of the portals message header are aligned on an 8 |
| * byte boundary in the message header. Note that all types used in these |
| * wire structs MUST be fixed size and the smaller types are placed at the |
| * end. |
| */ |
| typedef struct lnet_ack { |
| lnet_handle_wire_t dst_wmd; |
| __u64 match_bits; |
| __u32 mlength; |
| } WIRE_ATTR lnet_ack_t; |
| |
| typedef struct lnet_put { |
| lnet_handle_wire_t ack_wmd; |
| __u64 match_bits; |
| __u64 hdr_data; |
| __u32 ptl_index; |
| __u32 offset; |
| } WIRE_ATTR lnet_put_t; |
| |
| typedef struct lnet_get { |
| lnet_handle_wire_t return_wmd; |
| __u64 match_bits; |
| __u32 ptl_index; |
| __u32 src_offset; |
| __u32 sink_length; |
| } WIRE_ATTR lnet_get_t; |
| |
| typedef struct lnet_reply { |
| lnet_handle_wire_t dst_wmd; |
| } WIRE_ATTR lnet_reply_t; |
| |
| typedef struct lnet_hello { |
| __u64 incarnation; |
| __u32 type; |
| } WIRE_ATTR lnet_hello_t; |
| |
| typedef struct { |
| lnet_nid_t dest_nid; |
| lnet_nid_t src_nid; |
| lnet_pid_t dest_pid; |
| lnet_pid_t src_pid; |
| __u32 type; /* lnet_msg_type_t */ |
| __u32 payload_length; /* payload data to follow */ |
| /*<------__u64 aligned------->*/ |
| union { |
| lnet_ack_t ack; |
| lnet_put_t put; |
| lnet_get_t get; |
| lnet_reply_t reply; |
| lnet_hello_t hello; |
| } msg; |
| } WIRE_ATTR lnet_hdr_t; |
| |
| /* |
| * A HELLO message contains a magic number and protocol version |
| * code in the header's dest_nid, the peer's NID in the src_nid, and |
| * LNET_MSG_HELLO in the type field. All other common fields are zero |
| * (including payload_size; i.e. no payload). |
| * This is for use by byte-stream LNDs (e.g. TCP/IP) to check the peer is |
| * running the same protocol and to find out its NID. These LNDs should |
| * exchange HELLO messages when a connection is first established. Individual |
| * LNDs can put whatever else they fancy in lnet_hdr_t::msg. |
| */ |
| typedef struct { |
| __u32 magic; /* LNET_PROTO_TCP_MAGIC */ |
| __u16 version_major; /* increment on incompatible change */ |
| __u16 version_minor; /* increment on compatible change */ |
| } WIRE_ATTR lnet_magicversion_t; |
| |
| /* PROTO MAGIC for LNDs */ |
| #define LNET_PROTO_IB_MAGIC 0x0be91b91 |
| #define LNET_PROTO_GNI_MAGIC 0xb00fbabe /* ask Kim */ |
| #define LNET_PROTO_TCP_MAGIC 0xeebc0ded |
| #define LNET_PROTO_ACCEPTOR_MAGIC 0xacce7100 |
| #define LNET_PROTO_PING_MAGIC 0x70696E67 /* 'ping' */ |
| |
| /* Placeholder for a future "unified" protocol across all LNDs */ |
| /* |
| * Current LNDs that receive a request with this magic will respond with a |
| * "stub" reply using their current protocol |
| */ |
| #define LNET_PROTO_MAGIC 0x45726963 /* ! */ |
| |
| #define LNET_PROTO_TCP_VERSION_MAJOR 1 |
| #define LNET_PROTO_TCP_VERSION_MINOR 0 |
| |
| /* Acceptor connection request */ |
| typedef struct { |
| __u32 acr_magic; /* PTL_ACCEPTOR_PROTO_MAGIC */ |
| __u32 acr_version; /* protocol version */ |
| __u64 acr_nid; /* target NID */ |
| } WIRE_ATTR lnet_acceptor_connreq_t; |
| |
| #define LNET_PROTO_ACCEPTOR_VERSION 1 |
| |
| typedef struct { |
| lnet_nid_t ns_nid; |
| __u32 ns_status; |
| __u32 ns_unused; |
| } WIRE_ATTR lnet_ni_status_t; |
| |
| typedef struct { |
| __u32 pi_magic; |
| __u32 pi_features; |
| lnet_pid_t pi_pid; |
| __u32 pi_nnis; |
| lnet_ni_status_t pi_ni[0]; |
| } WIRE_ATTR lnet_ping_info_t; |
| |
| typedef struct lnet_counters { |
| __u32 msgs_alloc; |
| __u32 msgs_max; |
| __u32 errors; |
| __u32 send_count; |
| __u32 recv_count; |
| __u32 route_count; |
| __u32 drop_count; |
| __u64 send_length; |
| __u64 recv_length; |
| __u64 route_length; |
| __u64 drop_length; |
| } WIRE_ATTR lnet_counters_t; |
| |
| #define LNET_NI_STATUS_UP 0x15aac0de |
| #define LNET_NI_STATUS_DOWN 0xdeadface |
| #define LNET_NI_STATUS_INVALID 0x00000000 |
| |
| #define LNET_MAX_INTERFACES 16 |
| |
| /** |
| * Objects maintained by the LNet are accessed through handles. Handle types |
| * have names of the form lnet_handle_xx_t, where xx is one of the two letter |
| * object type codes ('eq' for event queue, 'md' for memory descriptor, and |
| * 'me' for match entry). |
| * Each type of object is given a unique handle type to enhance type checking. |
| * The type lnet_handle_any_t can be used when a generic handle is needed. |
| * Every handle value can be converted into a value of type lnet_handle_any_t |
| * without loss of information. |
| */ |
| typedef struct { |
| __u64 cookie; |
| } lnet_handle_any_t; |
| |
| typedef lnet_handle_any_t lnet_handle_eq_t; |
| typedef lnet_handle_any_t lnet_handle_md_t; |
| typedef lnet_handle_any_t lnet_handle_me_t; |
| |
| #define LNET_WIRE_HANDLE_COOKIE_NONE (-1) |
| |
| /** |
| * Invalidate handle \a h. |
| */ |
| static inline void LNetInvalidateHandle(lnet_handle_any_t *h) |
| { |
| h->cookie = LNET_WIRE_HANDLE_COOKIE_NONE; |
| } |
| |
| /** |
| * Compare handles \a h1 and \a h2. |
| * |
| * \return 1 if handles are equal, 0 if otherwise. |
| */ |
| static inline int LNetHandleIsEqual(lnet_handle_any_t h1, lnet_handle_any_t h2) |
| { |
| return h1.cookie == h2.cookie; |
| } |
| |
| /** |
| * Check whether handle \a h is invalid. |
| * |
| * \return 1 if handle is invalid, 0 if valid. |
| */ |
| static inline int LNetHandleIsInvalid(lnet_handle_any_t h) |
| { |
| return h.cookie == LNET_WIRE_HANDLE_COOKIE_NONE; |
| } |
| |
| /** |
| * Global process ID. |
| */ |
| typedef struct { |
| /** node id */ |
| lnet_nid_t nid; |
| /** process id */ |
| lnet_pid_t pid; |
| } lnet_process_id_t; |
| /** @} lnet_addr */ |
| |
| /** \addtogroup lnet_me |
| * @{ |
| */ |
| |
| /** |
| * Specifies whether the match entry or memory descriptor should be unlinked |
| * automatically (LNET_UNLINK) or not (LNET_RETAIN). |
| */ |
| typedef enum { |
| LNET_RETAIN = 0, |
| LNET_UNLINK |
| } lnet_unlink_t; |
| |
| /** |
| * Values of the type lnet_ins_pos_t are used to control where a new match |
| * entry is inserted. The value LNET_INS_BEFORE is used to insert the new |
| * entry before the current entry or before the head of the list. The value |
| * LNET_INS_AFTER is used to insert the new entry after the current entry |
| * or after the last item in the list. |
| */ |
| typedef enum { |
| /** insert ME before current position or head of the list */ |
| LNET_INS_BEFORE, |
| /** insert ME after current position or tail of the list */ |
| LNET_INS_AFTER, |
| /** attach ME at tail of local CPU partition ME list */ |
| LNET_INS_LOCAL |
| } lnet_ins_pos_t; |
| |
| /** @} lnet_me */ |
| |
| /** \addtogroup lnet_md |
| * @{ |
| */ |
| |
| /** |
| * Defines the visible parts of a memory descriptor. Values of this type |
| * are used to initialize memory descriptors. |
| */ |
| typedef struct { |
| /** |
| * Specify the memory region associated with the memory descriptor. |
| * If the options field has: |
| * - LNET_MD_KIOV bit set: The start field points to the starting |
| * address of an array of lnet_kiov_t and the length field specifies |
| * the number of entries in the array. The length can't be bigger |
| * than LNET_MAX_IOV. The lnet_kiov_t is used to describe page-based |
| * fragments that are not necessarily mapped in virtual memory. |
| * - LNET_MD_IOVEC bit set: The start field points to the starting |
| * address of an array of struct iovec and the length field specifies |
| * the number of entries in the array. The length can't be bigger |
| * than LNET_MAX_IOV. The struct iovec is used to describe fragments |
| * that have virtual addresses. |
| * - Otherwise: The memory region is contiguous. The start field |
| * specifies the starting address for the memory region and the |
| * length field specifies its length. |
| * |
| * When the memory region is fragmented, all fragments but the first |
| * one must start on page boundary, and all but the last must end on |
| * page boundary. |
| */ |
| void *start; |
| unsigned int length; |
| /** |
| * Specifies the maximum number of operations that can be performed |
| * on the memory descriptor. An operation is any action that could |
| * possibly generate an event. In the usual case, the threshold value |
| * is decremented for each operation on the MD. When the threshold |
| * drops to zero, the MD becomes inactive and does not respond to |
| * operations. A threshold value of LNET_MD_THRESH_INF indicates that |
| * there is no bound on the number of operations that may be applied |
| * to a MD. |
| */ |
| int threshold; |
| /** |
| * Specifies the largest incoming request that the memory descriptor |
| * should respond to. When the unused portion of a MD (length - |
| * local offset) falls below this value, the MD becomes inactive and |
| * does not respond to further operations. This value is only used |
| * if the LNET_MD_MAX_SIZE option is set. |
| */ |
| int max_size; |
| /** |
| * Specifies the behavior of the memory descriptor. A bitwise OR |
| * of the following values can be used: |
| * - LNET_MD_OP_PUT: The LNet PUT operation is allowed on this MD. |
| * - LNET_MD_OP_GET: The LNet GET operation is allowed on this MD. |
| * - LNET_MD_MANAGE_REMOTE: The offset used in accessing the memory |
| * region is provided by the incoming request. By default, the |
| * offset is maintained locally. When maintained locally, the |
| * offset is incremented by the length of the request so that |
| * the next operation (PUT or GET) will access the next part of |
| * the memory region. Note that only one offset variable exists |
| * per memory descriptor. If both PUT and GET operations are |
| * performed on a memory descriptor, the offset is updated each time. |
| * - LNET_MD_TRUNCATE: The length provided in the incoming request can |
| * be reduced to match the memory available in the region (determined |
| * by subtracting the offset from the length of the memory region). |
| * By default, if the length in the incoming operation is greater |
| * than the amount of memory available, the operation is rejected. |
| * - LNET_MD_ACK_DISABLE: An acknowledgment should not be sent for |
| * incoming PUT operations, even if requested. By default, |
| * acknowledgments are sent for PUT operations that request an |
| * acknowledgment. Acknowledgments are never sent for GET operations. |
| * The data sent in the REPLY serves as an implicit acknowledgment. |
| * - LNET_MD_KIOV: The start and length fields specify an array of |
| * lnet_kiov_t. |
| * - LNET_MD_IOVEC: The start and length fields specify an array of |
| * struct iovec. |
| * - LNET_MD_MAX_SIZE: The max_size field is valid. |
| * |
| * Note: |
| * - LNET_MD_KIOV or LNET_MD_IOVEC allows for a scatter/gather |
| * capability for memory descriptors. They can't be both set. |
| * - When LNET_MD_MAX_SIZE is set, the total length of the memory |
| * region (i.e. sum of all fragment lengths) must not be less than |
| * \a max_size. |
| */ |
| unsigned int options; |
| /** |
| * A user-specified value that is associated with the memory |
| * descriptor. The value does not need to be a pointer, but must fit |
| * in the space used by a pointer. This value is recorded in events |
| * associated with operations on this MD. |
| */ |
| void *user_ptr; |
| /** |
| * A handle for the event queue used to log the operations performed on |
| * the memory region. If this argument is a NULL handle (i.e. nullified |
| * by LNetInvalidateHandle()), operations performed on this memory |
| * descriptor are not logged. |
| */ |
| lnet_handle_eq_t eq_handle; |
| } lnet_md_t; |
| |
| /* |
| * Max Transfer Unit (minimum supported everywhere). |
| * CAVEAT EMPTOR, with multinet (i.e. routers forwarding between networks) |
| * these limits are system wide and not interface-local. |
| */ |
| #define LNET_MTU_BITS 20 |
| #define LNET_MTU (1 << LNET_MTU_BITS) |
| |
| /** limit on the number of fragments in discontiguous MDs */ |
| #define LNET_MAX_IOV 256 |
| |
| /** |
| * Options for the MD structure. See lnet_md_t::options. |
| */ |
| #define LNET_MD_OP_PUT (1 << 0) |
| /** See lnet_md_t::options. */ |
| #define LNET_MD_OP_GET (1 << 1) |
| /** See lnet_md_t::options. */ |
| #define LNET_MD_MANAGE_REMOTE (1 << 2) |
| /* unused (1 << 3) */ |
| /** See lnet_md_t::options. */ |
| #define LNET_MD_TRUNCATE (1 << 4) |
| /** See lnet_md_t::options. */ |
| #define LNET_MD_ACK_DISABLE (1 << 5) |
| /** See lnet_md_t::options. */ |
| #define LNET_MD_IOVEC (1 << 6) |
| /** See lnet_md_t::options. */ |
| #define LNET_MD_MAX_SIZE (1 << 7) |
| /** See lnet_md_t::options. */ |
| #define LNET_MD_KIOV (1 << 8) |
| |
| /* For compatibility with Cray Portals */ |
| #define LNET_MD_PHYS 0 |
| |
| /** Infinite threshold on MD operations. See lnet_md_t::threshold */ |
| #define LNET_MD_THRESH_INF (-1) |
| |
| /* NB lustre portals uses struct iovec internally! */ |
| typedef struct iovec lnet_md_iovec_t; |
| |
| typedef struct bio_vec lnet_kiov_t; |
| /** @} lnet_md */ |
| |
| /** \addtogroup lnet_eq |
| * @{ |
| */ |
| |
| /** |
| * Six types of events can be logged in an event queue. |
| */ |
| typedef enum { |
| /** An incoming GET operation has completed on the MD. */ |
| LNET_EVENT_GET = 1, |
| /** |
| * An incoming PUT operation has completed on the MD. The |
| * underlying layers will not alter the memory (on behalf of this |
| * operation) once this event has been logged. |
| */ |
| LNET_EVENT_PUT, |
| /** |
| * A REPLY operation has completed. This event is logged after the |
| * data (if any) from the REPLY has been written into the MD. |
| */ |
| LNET_EVENT_REPLY, |
| /** An acknowledgment has been received. */ |
| LNET_EVENT_ACK, |
| /** |
| * An outgoing send (PUT or GET) operation has completed. This event |
| * is logged after the entire buffer has been sent and it is safe for |
| * the caller to reuse the buffer. |
| * |
| * Note: |
| * - The LNET_EVENT_SEND doesn't guarantee message delivery. It can |
| * happen even when the message has not yet been put out on wire. |
| * - It's unsafe to assume that in an outgoing GET operation |
| * the LNET_EVENT_SEND event would happen before the |
| * LNET_EVENT_REPLY event. The same holds for LNET_EVENT_SEND and |
| * LNET_EVENT_ACK events in an outgoing PUT operation. |
| */ |
| LNET_EVENT_SEND, |
| /** |
| * A MD has been unlinked. Note that LNetMDUnlink() does not |
| * necessarily trigger an LNET_EVENT_UNLINK event. |
| * \see LNetMDUnlink |
| */ |
| LNET_EVENT_UNLINK, |
| } lnet_event_kind_t; |
| |
| #define LNET_SEQ_BASETYPE long |
| typedef unsigned LNET_SEQ_BASETYPE lnet_seq_t; |
| #define LNET_SEQ_GT(a, b) (((signed LNET_SEQ_BASETYPE)((a) - (b))) > 0) |
| |
| /** |
| * Information about an event on a MD. |
| */ |
| typedef struct { |
| /** The identifier (nid, pid) of the target. */ |
| lnet_process_id_t target; |
| /** The identifier (nid, pid) of the initiator. */ |
| lnet_process_id_t initiator; |
| /** |
| * The NID of the immediate sender. If the request has been forwarded |
| * by routers, this is the NID of the last hop; otherwise it's the |
| * same as the initiator. |
| */ |
| lnet_nid_t sender; |
| /** Indicates the type of the event. */ |
| lnet_event_kind_t type; |
| /** The portal table index specified in the request */ |
| unsigned int pt_index; |
| /** A copy of the match bits specified in the request. */ |
| __u64 match_bits; |
| /** The length (in bytes) specified in the request. */ |
| unsigned int rlength; |
| /** |
| * The length (in bytes) of the data that was manipulated by the |
| * operation. For truncated operations, the manipulated length will be |
| * the number of bytes specified by the MD (possibly with an offset, |
| * see lnet_md_t). For all other operations, the manipulated length |
| * will be the length of the requested operation, i.e. rlength. |
| */ |
| unsigned int mlength; |
| /** |
| * The handle to the MD associated with the event. The handle may be |
| * invalid if the MD has been unlinked. |
| */ |
| lnet_handle_md_t md_handle; |
| /** |
| * A snapshot of the state of the MD immediately after the event has |
| * been processed. In particular, the threshold field in md will |
| * reflect the value of the threshold after the operation occurred. |
| */ |
| lnet_md_t md; |
| /** |
| * 64 bits of out-of-band user data. Only valid for LNET_EVENT_PUT. |
| * \see LNetPut |
| */ |
| __u64 hdr_data; |
| /** |
| * Indicates the completion status of the operation. It's 0 for |
| * successful operations, otherwise it's an error code. |
| */ |
| int status; |
| /** |
| * Indicates whether the MD has been unlinked. Note that: |
| * - An event with unlinked set is the last event on the MD. |
| * - This field is also set for an explicit LNET_EVENT_UNLINK event. |
| * \see LNetMDUnlink |
| */ |
| int unlinked; |
| /** |
| * The displacement (in bytes) into the memory region that the |
| * operation used. The offset can be determined by the operation for |
| * a remote managed MD or by the local MD. |
| * \see lnet_md_t::options |
| */ |
| unsigned int offset; |
| /** |
| * The sequence number for this event. Sequence numbers are unique |
| * to each event. |
| */ |
| volatile lnet_seq_t sequence; |
| } lnet_event_t; |
| |
| /** |
| * Event queue handler function type. |
| * |
| * The EQ handler runs for each event that is deposited into the EQ. The |
| * handler is supplied with a pointer to the event that triggered the |
| * handler invocation. |
| * |
| * The handler must not block, must be reentrant, and must not call any LNet |
| * API functions. It should return as quickly as possible. |
| */ |
| typedef void (*lnet_eq_handler_t)(lnet_event_t *event); |
| #define LNET_EQ_HANDLER_NONE NULL |
| /** @} lnet_eq */ |
| |
| /** \addtogroup lnet_data |
| * @{ |
| */ |
| |
| /** |
| * Specify whether an acknowledgment should be sent by target when the PUT |
| * operation completes (i.e., when the data has been written to a MD of the |
| * target process). |
| * |
| * \see lnet_md_t::options for the discussion on LNET_MD_ACK_DISABLE by which |
| * acknowledgments can be disabled for a MD. |
| */ |
| typedef enum { |
| /** Request an acknowledgment */ |
| LNET_ACK_REQ, |
| /** Request that no acknowledgment should be generated. */ |
| LNET_NOACK_REQ |
| } lnet_ack_req_t; |
| /** @} lnet_data */ |
| |
| /** @} lnet */ |
| #endif |