+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * 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.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
- * lnet/klnds/openiblnd/openiblnd.h
- *
- * Author: Eric Barton <eric@bartonsoftware.com>
- */
-
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
-#ifndef AUTOCONF_INCLUDED
-#include <linux/config.h>
-#endif
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/stat.h>
-#include <linux/errno.h>
-#include <linux/smp_lock.h>
-#include <linux/unistd.h>
-#include <linux/uio.h>
-
-#include <asm/system.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-
-#include <linux/init.h>
-#include <linux/fs.h>
-#include <linux/file.h>
-#include <linux/stat.h>
-#include <linux/list.h>
-#include <linux/kmod.h>
-#include <linux/sysctl.h>
-
-#include <net/sock.h>
-#include <linux/in.h>
-
-#define DEBUG_SUBSYSTEM S_LND
-
-#include <libcfs/libcfs.h>
-#include <lnet/lnet.h>
-#include <lnet/lib-lnet.h>
-#include <lnet/lnet-sysctl.h>
-
-#include <ts_ib_core.h>
-#include <ts_ib_cm.h>
-#include <ts_ib_sa_client.h>
-
-#ifndef USING_TSAPI
-
-/* OpenIB Gen1 */
-typedef struct ib_qp ib_qp_t;
-typedef struct ib_mr ib_mr_t;
-typedef struct ib_fmr ib_fmr_t;
-typedef struct ib_pd ib_pd_t;
-typedef struct ib_cq ib_cq_t;
-typedef struct ib_fmr_pool ib_fmr_pool_t;
-
-#else
-
-/* Cisco (topspin) */
-typedef void ib_qp_t;
-typedef void ib_mr_t;
-typedef void ib_fmr_t;
-typedef void ib_pd_t;
-typedef void ib_cq_t;
-typedef void ib_fmr_pool_t;
-
-#define IB_ACCESS_LOCAL_WRITE TS_IB_ACCESS_LOCAL_WRITE
-#define IB_WQ_SIGNAL_SELECTABLE TS_IB_ACCESS_LOCAL_WRITE
-#define IB_TRANSPORT_RC TS_IB_TRANSPORT_RC
-#define IB_QP_STATE_INIT TS_IB_QP_STATE_INIT
-#define IB_QP_ATTRIBUTE_STATE TS_IB_QP_ATTRIBUTE_STATE
-#define IB_QP_ATTRIBUTE_PORT TS_IB_QP_ATTRIBUTE_PORT
-#define IB_QP_ATTRIBUTE_PKEY_INDEX TS_IB_QP_ATTRIBUTE_PKEY_INDEX
-#define IB_QP_ATTRIBUTE_RDMA_ATOMIC_ENABLE TS_IB_QP_ATTRIBUTE_RDMA_ATOMIC_ENABLE
-#define IB_ACCESS_LOCAL_WRITE TS_IB_ACCESS_LOCAL_WRITE
-#define IB_ACCESS_REMOTE_WRITE TS_IB_ACCESS_REMOTE_WRITE
-#define IB_ACCESS_REMOTE_READ TS_IB_ACCESS_REMOTE_READ
-#define IB_CQ_CALLBACK_INTERRU TS_IB_CQ_CALLBACK_INTERRUPTPT
-#define IB_CQ_PROVIDER_REARM TS_IB_CQ_PROVIDER_REARM
-#define IB_CQ_CALLBACK_INTERRUPT TS_IB_CQ_CALLBACK_INTERRUPT
-#define IB_COMPLETION_STATUS_SUCCESS TS_IB_COMPLETION_STATUS_SUCCESS
-#define IB_OP_SEND TS_IB_OP_SEND
-#define IB_OP_RDMA_WRITE TS_IB_OP_RDMA_WRITE
-#define IB_OP_RDMA_READ TS_IB_OP_RDMA_READ
-
-#endif
-
-#ifdef CONFIG_SMP
-# define IBNAL_N_SCHED num_online_cpus() /* # schedulers */
-#else
-# define IBNAL_N_SCHED 1 /* # schedulers */
-#endif
-
-#define IBNAL_FMR 1
-//#define IBNAL_CALLBACK_CTXT IB_CQ_CALLBACK_PROCESS
-#define IBNAL_CALLBACK_CTXT IB_CQ_CALLBACK_INTERRUPT
-
-
-/* tunables fixed at compile time */
-#define IBNAL_PEER_HASH_SIZE 101 /* # peer lists */
-#define IBNAL_RESCHED 100 /* # scheduler loops before reschedule */
-#define IBNAL_MSG_QUEUE_SIZE 8 /* # messages/RDMAs in-flight */
-#define IBNAL_CREDIT_HIGHWATER 6 /* when to eagerly return credits */
-#define IBNAL_MSG_SIZE (4<<10) /* max size of queued messages (inc hdr) */
-#define IBNAL_RDMA_BASE 0x0eeb0000
-
-/* QP tunables */
-#define IBNAL_RETRY 7 /* # times to retry */
-#define IBNAL_RNR_RETRY 7 /* */
-#define IBNAL_CM_RETRY 7 /* # times to retry connection */
-#define IBNAL_FLOW_CONTROL 1
-#define IBNAL_RESPONDER_RESOURCES 8
-
-/************************/
-/* derived constants... */
-
-/* TX messages (shared by all connections) */
-#define IBNAL_TX_MSGS() (*kibnal_tunables.kib_ntx)
-#define IBNAL_TX_MSG_BYTES() (IBNAL_TX_MSGS() * IBNAL_MSG_SIZE)
-#define IBNAL_TX_MSG_PAGES() ((IBNAL_TX_MSG_BYTES() + PAGE_SIZE - 1)/PAGE_SIZE)
-
-/* RX messages (per connection) */
-#define IBNAL_RX_MSGS (IBNAL_MSG_QUEUE_SIZE * 2)
-#define IBNAL_RX_MSG_BYTES (IBNAL_RX_MSGS * IBNAL_MSG_SIZE)
-#define IBNAL_RX_MSG_PAGES ((IBNAL_RX_MSG_BYTES + PAGE_SIZE - 1)/PAGE_SIZE)
-
-/* we may have up to 2 completions per transmit +
- 1 completion per receive, per connection */
-#define IBNAL_CQ_ENTRIES() ((2*IBNAL_TX_MSGS()) + \
- (IBNAL_RX_MSGS * *kibnal_tunables.kib_concurrent_peers))
-
-typedef struct
-{
- char **kib_ipif_basename; /* IPoIB interface base name */
- int *kib_n_connd; /* # connection daemons */
- int *kib_min_reconnect_interval; /* min connect retry seconds... */
- int *kib_max_reconnect_interval; /* max connect retry seconds */
- int *kib_concurrent_peers; /* max # peers */
- int *kib_cksum; /* checksum kib_msg_t? */
- int *kib_timeout; /* comms timeout (seconds) */
- int *kib_keepalive; /* keepalive (seconds) */
- int *kib_ntx; /* # tx descs */
- int *kib_credits; /* # concurrent sends */
- int *kib_peercredits; /* # concurrent sends to 1 peer */
-
- cfs_sysctl_table_header_t *kib_sysctl; /* sysctl interface */
-} kib_tunables_t;
-
-typedef struct
-{
- int ibp_npages; /* # pages */
- int ibp_mapped; /* mapped? */
- __u64 ibp_vaddr; /* mapped region vaddr */
- __u32 ibp_lkey; /* mapped region lkey */
- __u32 ibp_rkey; /* mapped region rkey */
- ib_mr_t *ibp_handle; /* mapped region handle */
- struct page *ibp_pages[0];
-} kib_pages_t;
-
-typedef struct
-{
- int kib_init; /* initialisation state */
- __u64 kib_incarnation; /* which one am I */
- int kib_shutdown; /* shut down? */
- atomic_t kib_nthreads; /* # live threads */
- lnet_ni_t *kib_ni; /* _the_ openib interface */
-
- __u64 kib_svc_id; /* service number I listen on */
- tTS_IB_GID kib_svc_gid; /* device/port GID */
- __u16 kib_svc_pkey; /* device/port pkey */
-
- void *kib_listen_handle; /* IB listen handle */
-
- rwlock_t kib_global_lock; /* stabilize peer/conn ops */
-
- struct list_head *kib_peers; /* hash table of all my known peers */
- int kib_peer_hash_size; /* size of kib_peers */
- int kib_nonewpeers; /* prevent new peers? */
- atomic_t kib_npeers; /* # peers extant */
- atomic_t kib_nconns; /* # connections extant */
-
- struct list_head kib_reaper_conns; /* connections to reap */
- wait_queue_head_t kib_reaper_waitq; /* reaper sleeps here */
- unsigned long kib_reaper_waketime; /* when reaper will wake */
- spinlock_t kib_reaper_lock; /* serialise */
-
- struct list_head kib_connd_peers; /* peers waiting for a connection */
- struct list_head kib_connd_acceptq; /* accepted sockets to handle */
- wait_queue_head_t kib_connd_waitq; /* connection daemons sleep here */
- int kib_connd_connecting; /* # connds connecting */
- spinlock_t kib_connd_lock; /* serialise */
-
- wait_queue_head_t kib_sched_waitq; /* schedulers sleep here */
- struct list_head kib_sched_txq; /* tx requiring attention */
- struct list_head kib_sched_rxq; /* rx requiring attention */
- spinlock_t kib_sched_lock; /* serialise */
-
- struct kib_tx *kib_tx_descs; /* all the tx descriptors */
- kib_pages_t *kib_tx_pages; /* premapped tx msg pages */
-
- struct list_head kib_idle_txs; /* idle tx descriptors */
- __u64 kib_next_tx_cookie; /* RDMA completion cookie */
- spinlock_t kib_tx_lock; /* serialise */
-
- int kib_hca_idx; /* my HCA number */
- struct ib_device *kib_device; /* "the" device */
- struct ib_device_properties kib_device_props; /* its properties */
- int kib_port; /* port on the device */
- struct ib_port_properties kib_port_props; /* its properties */
- ib_pd_t *kib_pd; /* protection domain */
-#if IBNAL_FMR
- ib_fmr_pool_t *kib_fmr_pool; /* fast memory region pool */
-#endif
- ib_cq_t *kib_cq; /* completion queue */
-
-} kib_data_t;
-
-#define IBNAL_INIT_NOTHING 0
-#define IBNAL_INIT_DATA 1
-#define IBNAL_INIT_LIB 2
-#define IBNAL_INIT_PD 3
-#define IBNAL_INIT_FMR 4
-#define IBNAL_INIT_TXD 5
-#define IBNAL_INIT_CQ 6
-#define IBNAL_INIT_ALL 7
-
-typedef struct kib_acceptsock /* accepted socket queued for connd */
-{
- struct list_head ibas_list; /* queue for attention */
- struct socket *ibas_sock; /* the accepted socket */
-} kib_acceptsock_t;
-
-/************************************************************************
- * IB Wire message format.
- * These are sent in sender's byte order (i.e. receiver flips).
- * They may be sent via TCP/IP (service ID,GID,PKEY query/response),
- * as private data in the connection request/response, or "normally".
- */
-
-typedef struct kib_svcrsp /* service response */
-{
- __u64 ibsr_svc_id; /* service's id */
- __u8 ibsr_svc_gid[16]; /* service's gid */
- __u16 ibsr_svc_pkey; /* service's pkey */
-} WIRE_ATTR kib_svcrsp_t;
-
-typedef struct kib_connparams
-{
- __u32 ibcp_queue_depth;
-} WIRE_ATTR kib_connparams_t;
-
-typedef struct
-{
- union {
- ib_mr_t *mr;
- ib_fmr_t *fmr;
- } md_handle;
- __u32 md_lkey;
- __u32 md_rkey;
- __u64 md_addr;
-} kib_md_t;
-
-typedef struct
-{
- __u32 rd_key; /* remote key */
- __u32 rd_nob; /* # of bytes */
- __u64 rd_addr; /* remote io vaddr */
-} WIRE_ATTR kib_rdma_desc_t;
-
-typedef struct
-{
- lnet_hdr_t ibim_hdr; /* portals header */
- char ibim_payload[0]; /* piggy-backed payload */
-} WIRE_ATTR kib_immediate_msg_t;
-
-typedef struct
-{
- lnet_hdr_t ibrm_hdr; /* portals header */
- __u64 ibrm_cookie; /* opaque completion cookie */
- kib_rdma_desc_t ibrm_desc; /* where to suck/blow */
-} WIRE_ATTR kib_rdma_msg_t;
-
-typedef struct
-{
- __u64 ibcm_cookie; /* opaque completion cookie */
- __u32 ibcm_status; /* completion status */
-} WIRE_ATTR kib_completion_msg_t;
-
-typedef struct
-{
- /* First 2 fields fixed FOR ALL TIME */
- __u32 ibm_magic; /* I'm an openibnal message */
- __u16 ibm_version; /* this is my version number */
-
- __u8 ibm_type; /* msg type */
- __u8 ibm_credits; /* returned credits */
- __u32 ibm_nob; /* # bytes in whole message */
- __u32 ibm_cksum; /* checksum (0 == no checksum) */
- __u64 ibm_srcnid; /* sender's NID */
- __u64 ibm_srcstamp; /* sender's incarnation */
- __u64 ibm_dstnid; /* destination's NID */
- __u64 ibm_dststamp; /* destination's incarnation */
- union {
- kib_svcrsp_t svcrsp;
- kib_connparams_t connparams;
- kib_immediate_msg_t immediate;
- kib_rdma_msg_t rdma;
- kib_completion_msg_t completion;
- } WIRE_ATTR ibm_u;
-} WIRE_ATTR kib_msg_t;
-
-#define IBNAL_MSG_MAGIC LNET_PROTO_OPENIB_MAGIC /* unique magic */
-#define IBNAL_MSG_VERSION_RDMAREPLYNOTRSRVD 2 /* previous protocol version */
-#define IBNAL_MSG_VERSION 3 /* current protocol version */
-
-#define IBNAL_MSG_SVCQRY 0xb0 /* service query */
-#define IBNAL_MSG_SVCRSP 0xb1 /* service response */
-#define IBNAL_MSG_CONNREQ 0xc0 /* connection request */
-#define IBNAL_MSG_CONNACK 0xc1 /* connection acknowledge */
-#define IBNAL_MSG_NOOP 0xd0 /* nothing (just credits) */
-#define IBNAL_MSG_IMMEDIATE 0xd1 /* portals hdr + payload */
-#define IBNAL_MSG_PUT_RDMA 0xd2 /* portals PUT hdr + source rdma desc */
-#define IBNAL_MSG_PUT_DONE 0xd3 /* signal PUT rdma completion */
-#define IBNAL_MSG_GET_RDMA 0xd4 /* portals GET hdr + sink rdma desc */
-#define IBNAL_MSG_GET_DONE 0xd5 /* signal GET rdma completion */
-
-/***********************************************************************/
-
-typedef struct kib_rx /* receive message */
-{
- struct list_head rx_list; /* queue for attention */
- struct kib_conn *rx_conn; /* owning conn */
- int rx_nob; /* # bytes received (-1 while posted) */
- __u64 rx_vaddr; /* pre-mapped buffer (hca vaddr) */
- kib_msg_t *rx_msg; /* pre-mapped buffer (host vaddr) */
- struct ib_receive_param rx_sp; /* receive work item */
- struct ib_gather_scatter rx_gl; /* and it's memory */
-} kib_rx_t;
-
-typedef struct kib_tx /* transmit message */
-{
- struct list_head tx_list; /* queue on idle_txs ibc_tx_queue etc. */
- struct kib_conn *tx_conn; /* owning conn */
- int tx_mapped; /* mapped for RDMA? */
- int tx_sending; /* # tx callbacks outstanding */
- int tx_status; /* completion status */
- unsigned long tx_deadline; /* completion deadline */
- int tx_passive_rdma; /* peer sucks/blows */
- int tx_passive_rdma_wait; /* waiting for peer to complete */
- __u64 tx_passive_rdma_cookie; /* completion cookie */
- lnet_msg_t *tx_lntmsg[2]; /* ptl msgs to finalize on completion */
- kib_md_t tx_md; /* RDMA mapping (active/passive) */
- __u64 tx_vaddr; /* pre-mapped buffer (hca vaddr) */
- kib_msg_t *tx_msg; /* pre-mapped buffer (host vaddr) */
- int tx_nsp; /* # send work items */
- struct ib_send_param tx_sp[2]; /* send work items... */
- struct ib_gather_scatter tx_gl[2]; /* ...and their memory */
-} kib_tx_t;
-
-#define KIB_TX_UNMAPPED 0
-#define KIB_TX_MAPPED 1
-#define KIB_TX_MAPPED_FMR 2
-
-typedef struct kib_connreq
-{
- /* active connection-in-progress state */
- struct kib_conn *cr_conn;
- kib_msg_t cr_msg;
- __u64 cr_tid;
- tTS_IB_GID cr_gid;
- kib_svcrsp_t cr_svcrsp;
- struct ib_path_record cr_path;
- struct ib_cm_active_param cr_connparam;
-} kib_connreq_t;
-
-typedef struct kib_conn
-{
- struct kib_peer *ibc_peer; /* owning peer */
- struct list_head ibc_list; /* stash on peer's conn list */
- __u64 ibc_incarnation; /* which instance of the peer */
- int ibc_version; /* peer protocol version */
- atomic_t ibc_refcount; /* # users */
- int ibc_state; /* what's happening */
- int ibc_nsends_posted; /* # uncompleted sends */
- int ibc_credits; /* # credits I have */
- int ibc_outstanding_credits; /* # credits to return */
- int ibc_reserved_credits; /* # credits for ACK/DONE msgs */
- unsigned long ibc_last_send; /* time of last send */
- struct list_head ibc_tx_queue_nocred; /* sends that don't need a credit */
- struct list_head ibc_tx_queue_rsrvd; /* sends that need a reserved cred */
- struct list_head ibc_tx_queue; /* send queue */
- struct list_head ibc_active_txs; /* active tx awaiting completion */
- spinlock_t ibc_lock; /* serialise */
- kib_rx_t *ibc_rxs; /* the rx descs */
- kib_pages_t *ibc_rx_pages; /* premapped rx msg pages */
- ib_qp_t *ibc_qp; /* queue pair */
- __u32 ibc_qpn; /* queue pair number */
- tTS_IB_CM_COMM_ID ibc_comm_id; /* connection ID? */
- kib_connreq_t *ibc_connreq; /* connection request state */
-} kib_conn_t;
-
-#define IBNAL_CONN_INIT_NOTHING 0 /* initial state */
-#define IBNAL_CONN_INIT_QP 1 /* ibc_qp set up */
-#define IBNAL_CONN_CONNECTING 2 /* started to connect */
-#define IBNAL_CONN_ESTABLISHED 3 /* connection established */
-#define IBNAL_CONN_DEATHROW 4 /* waiting to be closed */
-#define IBNAL_CONN_ZOMBIE 5 /* waiting to be freed */
-
-typedef struct kib_peer
-{
- struct list_head ibp_list; /* stash on global peer list */
- struct list_head ibp_connd_list; /* schedule on kib_connd_peers */
- lnet_nid_t ibp_nid; /* who's on the other end(s) */
- __u32 ibp_ip; /* IP to query for peer conn params */
- int ibp_port; /* port to qery for peer conn params */
- __u64 ibp_incarnation; /* peer's incarnation */
- atomic_t ibp_refcount; /* # users */
- int ibp_persistence; /* "known" peer refs */
- struct list_head ibp_conns; /* all active connections */
- struct list_head ibp_tx_queue; /* msgs waiting for a conn */
- int ibp_connecting; /* current active connection attempts */
- int ibp_accepting; /* current passive connection attempts */
- unsigned long ibp_reconnect_time; /* when reconnect may be attempted */
- unsigned long ibp_reconnect_interval; /* exponential backoff */
- int ibp_error; /* errno on closing this peer */
- cfs_time_t ibp_last_alive; /* when (in jiffies) I was last alive */
-} kib_peer_t;
-
-extern kib_data_t kibnal_data;
-extern kib_tunables_t kibnal_tunables;
-
-/******************************************************************************/
-
-/* these are purposely avoiding using local vars so they don't increase
- * stack consumption. */
-
-#define kibnal_conn_addref(conn) \
-do { \
- CDEBUG(D_NET, "conn[%p] (%d)++\n", \
- (conn), atomic_read(&(conn)->ibc_refcount)); \
- LASSERT(atomic_read(&(conn)->ibc_refcount) > 0); \
- atomic_inc(&(conn)->ibc_refcount); \
-} while (0)
-
-#define kibnal_conn_decref(conn) \
-do { \
- unsigned long flags; \
- \
- CDEBUG(D_NET, "conn[%p] (%d)--\n", \
- (conn), atomic_read(&(conn)->ibc_refcount)); \
- LASSERT(atomic_read(&(conn)->ibc_refcount) > 0); \
- if (atomic_dec_and_test(&(conn)->ibc_refcount)) { \
- spin_lock_irqsave(&kibnal_data.kib_reaper_lock, flags); \
- list_add_tail(&(conn)->ibc_list, \
- &kibnal_data.kib_reaper_conns); \
- wake_up(&kibnal_data.kib_reaper_waitq); \
- spin_unlock_irqrestore(&kibnal_data.kib_reaper_lock, flags); \
- } \
-} while (0)
-
-#define kibnal_peer_addref(peer) \
-do { \
- CDEBUG(D_NET, "peer[%p] -> %s (%d)++\n", \
- (peer), libcfs_nid2str((peer)->ibp_nid), \
- atomic_read (&(peer)->ibp_refcount)); \
- LASSERT(atomic_read(&(peer)->ibp_refcount) > 0); \
- atomic_inc(&(peer)->ibp_refcount); \
-} while (0)
-
-#define kibnal_peer_decref(peer) \
-do { \
- CDEBUG(D_NET, "peer[%p] -> %s (%d)--\n", \
- (peer), libcfs_nid2str((peer)->ibp_nid), \
- atomic_read (&(peer)->ibp_refcount)); \
- LASSERT(atomic_read(&(peer)->ibp_refcount) > 0); \
- if (atomic_dec_and_test(&(peer)->ibp_refcount)) \
- kibnal_destroy_peer(peer); \
-} while (0)
-
-/******************************************************************************/
-
-static inline struct list_head *
-kibnal_nid2peerlist (lnet_nid_t nid)
-{
- unsigned int hash = ((unsigned int)nid) % kibnal_data.kib_peer_hash_size;
-
- return (&kibnal_data.kib_peers [hash]);
-}
-
-static inline int
-kibnal_peer_active(kib_peer_t *peer)
-{
- /* Am I in the peer hash table? */
- return (!list_empty(&peer->ibp_list));
-}
-
-static inline void
-kibnal_queue_tx_locked (kib_tx_t *tx, kib_conn_t *conn)
-{
- struct list_head *q;
-
- LASSERT (tx->tx_nsp > 0); /* work items set up */
- LASSERT (tx->tx_conn == NULL); /* only set here */
-
- kibnal_conn_addref(conn);
- tx->tx_conn = conn;
- tx->tx_deadline = jiffies + *kibnal_tunables.kib_timeout * HZ;
-
- if (conn->ibc_version == IBNAL_MSG_VERSION_RDMAREPLYNOTRSRVD) {
- /* All messages have simple credit control */
- q = &conn->ibc_tx_queue;
- } else {
- LASSERT (conn->ibc_version == IBNAL_MSG_VERSION);
-
- switch (tx->tx_msg->ibm_type) {
- case IBNAL_MSG_PUT_RDMA:
- case IBNAL_MSG_GET_RDMA:
- /* RDMA request: reserve a buffer for the RDMA reply
- * before sending */
- q = &conn->ibc_tx_queue_rsrvd;
- break;
-
- case IBNAL_MSG_PUT_DONE:
- case IBNAL_MSG_GET_DONE:
- /* RDMA completion: no credits; peer has reserved a
- * reply buffer */
- q = &conn->ibc_tx_queue_nocred;
- break;
-
- case IBNAL_MSG_NOOP:
- case IBNAL_MSG_IMMEDIATE:
- /* Otherwise: consume a credit before sending */
- q = &conn->ibc_tx_queue;
- break;
-
- default:
- LBUG();
- q = NULL;
- }
- }
-
- list_add_tail(&tx->tx_list, q);
-}
-
-static inline int
-kibnal_send_keepalive(kib_conn_t *conn)
-{
- return (*kibnal_tunables.kib_keepalive > 0) &&
- time_after(jiffies, conn->ibc_last_send +
- *kibnal_tunables.kib_keepalive*HZ);
-}
-
-/* CAVEAT EMPTOR:
- * We rely on tx/rx descriptor alignment to allow us to use the lowest bit
- * of the work request id as a flag to determine if the completion is for a
- * transmit or a receive. It seems that that the CQ entry's 'op' field
- * isn't always set correctly on completions that occur after QP teardown. */
-
-static inline __u64
-kibnal_ptr2wreqid (void *ptr, int isrx)
-{
- unsigned long lptr = (unsigned long)ptr;
-
- LASSERT ((lptr & 1) == 0);
- return (__u64)(lptr | (isrx ? 1 : 0));
-}
-
-static inline void *
-kibnal_wreqid2ptr (__u64 wreqid)
-{
- return (void *)(((unsigned long)wreqid) & ~1UL);
-}
-
-static inline int
-kibnal_wreqid_is_rx (__u64 wreqid)
-{
- return (wreqid & 1) != 0;
-}
-
-#if (IB_NTXRXPARAMS == 3)
-static inline int
-kibnal_ib_send(ib_qp_t *qp, struct ib_send_param *p)
-{
- return ib_send(qp, p, 1);
-}
-
-static inline int
-kibnal_ib_receive(ib_qp_t *qp, struct ib_receive_param *p)
-{
- return ib_receive(qp, p, 1);
-}
-#elif (IB_NTXRXPARAMS == 4)
-static inline int
-kibnal_ib_send(ib_qp_t *qp, struct ib_send_param *p)
-{
- return ib_send(qp, p, 1, NULL);
-}
-
-static inline int
-kibnal_ib_receive(ib_qp_t *qp, struct ib_receive_param *p)
-{
- return ib_receive(qp, p, 1, NULL);
-}
-#else
- #error "IB_NTXRXPARAMS not set correctly"
-#endif
-
-int kibnal_startup (lnet_ni_t *ni);
-void kibnal_shutdown (lnet_ni_t *ni);
-int kibnal_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg);
-int kibnal_send (lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg);
-int kibnal_eager_recv (lnet_ni_t *ni, void *private,
- lnet_msg_t *lntmsg, void **new_private);
-int kibnal_recv(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg,
- int delayed, unsigned int niov,
- struct iovec *iov, lnet_kiov_t *kiov,
- unsigned int offset, unsigned int mlen, unsigned int rlen);
-int kibnal_accept(lnet_ni_t *ni, struct socket *sock);
-
-extern void kibnal_init_msg(kib_msg_t *msg, int type, int body_nob);
-extern void kibnal_pack_msg(kib_msg_t *msg, int version, int credits,
- lnet_nid_t dstnid, __u64 dststamp);
-extern int kibnal_unpack_msg(kib_msg_t *msg, int expected_version, int nob);
-extern void kibnal_handle_svcqry (struct socket *sock);
-extern int kibnal_make_svcqry (kib_conn_t *conn);
-extern void kibnal_free_acceptsock (kib_acceptsock_t *as);
-extern int kibnal_create_peer (kib_peer_t **peerp, lnet_nid_t nid);
-extern void kibnal_destroy_peer (kib_peer_t *peer);
-extern int kibnal_add_persistent_peer(lnet_nid_t nid, __u32 ip, int port);
-extern int kibnal_del_peer (lnet_nid_t nid);
-extern kib_peer_t *kibnal_find_peer_locked (lnet_nid_t nid);
-extern void kibnal_unlink_peer_locked (kib_peer_t *peer);
-extern void kibnal_peer_alive(kib_peer_t *peer);
-extern int kibnal_close_stale_conns_locked (kib_peer_t *peer,
- __u64 incarnation);
-extern kib_conn_t *kibnal_create_conn (void);
-extern void kibnal_destroy_conn (kib_conn_t *conn);
-extern int kibnal_alloc_pages (kib_pages_t **pp, int npages, int access);
-extern void kibnal_free_pages (kib_pages_t *p);
-
-extern void kibnal_check_sends (kib_conn_t *conn);
-
-extern tTS_IB_CM_CALLBACK_RETURN
-kibnal_bad_conn_callback (tTS_IB_CM_EVENT event, tTS_IB_CM_COMM_ID cid,
- void *param, void *arg);
-extern tTS_IB_CM_CALLBACK_RETURN
-kibnal_conn_callback (tTS_IB_CM_EVENT event, tTS_IB_CM_COMM_ID cid,
- void *param, void *arg);
-extern tTS_IB_CM_CALLBACK_RETURN
-kibnal_passive_conn_callback (tTS_IB_CM_EVENT event, tTS_IB_CM_COMM_ID cid,
- void *param, void *arg);
-
-extern void kibnal_close_conn_locked (kib_conn_t *conn, int error);
-extern void kibnal_destroy_conn (kib_conn_t *conn);
-extern int kibnal_thread_start (int (*fn)(void *arg), void *arg);
-extern int kibnal_scheduler(void *arg);
-extern int kibnal_connd (void *arg);
-extern int kibnal_reaper (void *arg);
-extern void kibnal_callback (ib_cq_t *cq, struct ib_cq_entry *e, void *arg);
-extern void kibnal_txlist_done (struct list_head *txlist, int status);
-extern void kibnal_init_tx_msg (kib_tx_t *tx, int type, int body_nob);
-extern int kibnal_close_conn (kib_conn_t *conn, int why);
-extern void kibnal_start_active_rdma (int type, int status,
- kib_rx_t *rx, lnet_msg_t *lntmsg,
- unsigned int niov,
- struct iovec *iov, lnet_kiov_t *kiov,
- int offset, int nob);
-
-extern int kibnal_tunables_init(void);
-extern void kibnal_tunables_fini(void);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff