/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * Copyright (C) 2006 Cluster File Systems, Inc. * Author: Eric Barton * * This file is part of Lustre, http://www.lustre.org. * * Lustre is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. * * Lustre 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 for more details. * * You should have received a copy of the GNU General Public License * along with Lustre; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ #ifndef EXPORT_SYMTAB # define EXPORT_SYMTAB #endif #ifndef AUTOCONF_INCLUDED #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define DEBUG_SUBSYSTEM S_LND #include #include #include #if !HAVE_GFP_T typedef int gfp_t; #endif #include #include #include #include /* tunables fixed at compile time */ #ifdef CONFIG_SMP # define IBLND_N_SCHED num_online_cpus() /* # schedulers */ #else # define IBLND_N_SCHED 1 /* # schedulers */ #endif #define IBLND_PEER_HASH_SIZE 101 /* # peer lists */ #define IBLND_RESCHED 100 /* # scheduler loops before reschedule */ #define IBLND_MSG_QUEUE_SIZE 8 /* # messages/RDMAs in-flight */ #define IBLND_CREDIT_HIGHWATER 7 /* when eagerly to return credits */ #define IBLND_MSG_SIZE (4<<10) /* max size of queued messages (inc hdr) */ #define IBLND_MAP_ON_DEMAND 0 #if IBLND_MAP_ON_DEMAND # define IBLND_MAX_RDMA_FRAGS 1 #else # define IBLND_MAX_RDMA_FRAGS LNET_MAX_IOV #endif /************************/ /* derived constants... */ /* TX messages (shared by all connections) */ #define IBLND_TX_MSGS() (*kiblnd_tunables.kib_ntx) #define IBLND_TX_MSG_BYTES() (IBLND_TX_MSGS() * IBLND_MSG_SIZE) #define IBLND_TX_MSG_PAGES() ((IBLND_TX_MSG_BYTES() + PAGE_SIZE - 1)/PAGE_SIZE) /* RX messages (per connection) */ #define IBLND_RX_MSGS (IBLND_MSG_QUEUE_SIZE*2) #define IBLND_RX_MSG_BYTES (IBLND_RX_MSGS * IBLND_MSG_SIZE) #define IBLND_RX_MSG_PAGES ((IBLND_RX_MSG_BYTES + PAGE_SIZE - 1)/PAGE_SIZE) #define IBLND_CQ_ENTRIES() (IBLND_RX_MSGS + \ (*kiblnd_tunables.kib_concurrent_sends) * \ (1 + IBLND_MAX_RDMA_FRAGS)) typedef struct { unsigned int *kib_service; /* IB service number */ int *kib_min_reconnect_interval; /* first failed connection retry... */ int *kib_max_reconnect_interval; /* ...exponentially increasing to this */ int *kib_cksum; /* checksum kib_msg_t? */ int *kib_timeout; /* comms timeout (seconds) */ int *kib_keepalive; /* keepalive timeout (seconds) */ int *kib_ntx; /* # tx descs */ int *kib_credits; /* # concurrent sends */ int *kib_peercredits; /* # concurrent sends to 1 peer */ char **kib_default_ipif; /* default IPoIB interface */ int *kib_retry_count; int *kib_rnr_retry_count; int *kib_concurrent_sends; /* send work queue sizing */ int *kib_ib_mtu; /* IB MTU */ #if IBLND_MAP_ON_DEMAND int *kib_fmr_pool_size; /* # FMRs in pool */ int *kib_fmr_flush_trigger; /* When to trigger FMR flush */ int *kib_fmr_cache; /* enable FMR pool cache? */ #endif #if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM cfs_sysctl_table_header_t *kib_sysctl; /* sysctl interface */ #endif } kib_tunables_t; typedef struct { int ibp_npages; /* # pages */ struct page *ibp_pages[0]; } kib_pages_t; typedef struct { struct list_head ibd_list; /* chain on kib_devs */ __u32 ibd_ifip; /* IPoIB interface IP */ char ibd_ifname[32]; /* IPoIB interface name */ int ibd_nnets; /* # nets extant */ struct rdma_cm_id *ibd_cmid; /* IB listener (bound to 1 device) */ struct ib_pd *ibd_pd; /* PD for the device */ struct ib_mr *ibd_mr; /* MR for non RDMA I/O */ } kib_dev_t; typedef struct { __u64 ibn_incarnation; /* my epoch */ int ibn_init; /* initialisation state */ int ibn_shutdown; /* shutting down? */ atomic_t ibn_npeers; /* # peers extant */ atomic_t ibn_nconns; /* # connections extant */ struct kib_tx *ibn_tx_descs; /* all the tx descriptors */ kib_pages_t *ibn_tx_pages; /* premapped tx msg pages */ struct list_head ibn_idle_txs; /* idle tx descriptors */ spinlock_t ibn_tx_lock; /* serialise */ #if IBLND_MAP_ON_DEMAND struct ib_fmr_pool *ibn_fmrpool; /* FMR pool for RDMA I/O */ #endif kib_dev_t *ibn_dev; /* underlying IB device */ } kib_net_t; typedef struct { int kib_init; /* initialisation state */ int kib_shutdown; /* shut down? */ struct list_head kib_devs; /* IB devices extant */ atomic_t kib_nthreads; /* # live threads */ rwlock_t kib_global_lock; /* stabilize net/dev/peer/conn ops */ struct list_head *kib_peers; /* hash table of all my known peers */ int kib_peer_hash_size; /* size of kib_peers */ void *kib_connd; /* the connd task (serialisation assertions) */ struct list_head kib_connd_conns; /* connections to setup/teardown */ struct list_head kib_connd_zombies; /* connections with zero refcount */ wait_queue_head_t kib_connd_waitq; /* connection daemon sleeps here */ spinlock_t kib_connd_lock; /* serialise */ wait_queue_head_t kib_sched_waitq; /* schedulers sleep here */ struct list_head kib_sched_conns; /* conns to check for rx completions */ spinlock_t kib_sched_lock; /* serialise */ __u64 kib_next_tx_cookie; /* RDMA completion cookie */ struct ib_qp_attr kib_error_qpa; /* QP->ERROR */ } kib_data_t; #define IBLND_INIT_NOTHING 0 #define IBLND_INIT_DATA 1 #define IBLND_INIT_ALL 2 /************************************************************************ * IB Wire message format. * These are sent in sender's byte order (i.e. receiver flips). */ typedef struct kib_connparams { __u16 ibcp_queue_depth; __u16 ibcp_max_frags; __u32 ibcp_max_msg_size; } WIRE_ATTR kib_connparams_t; typedef struct { lnet_hdr_t ibim_hdr; /* portals header */ char ibim_payload[0]; /* piggy-backed payload */ } WIRE_ATTR kib_immediate_msg_t; #if IBLND_MAP_ON_DEMAND typedef struct { __u64 rd_addr; /* IO VMA address */ __u32 rd_nob; /* # of bytes */ __u32 rd_key; /* remote key */ } WIRE_ATTR kib_rdma_desc_t; #else typedef struct { __u32 rf_nob; /* # bytes this frag */ __u64 rf_addr; /* CAVEAT EMPTOR: misaligned!! */ } WIRE_ATTR kib_rdma_frag_t; typedef struct { __u32 rd_key; /* local/remote key */ __u32 rd_nfrags; /* # fragments */ kib_rdma_frag_t rd_frags[0]; /* buffer frags */ } WIRE_ATTR kib_rdma_desc_t; #endif typedef struct { lnet_hdr_t ibprm_hdr; /* portals header */ __u64 ibprm_cookie; /* opaque completion cookie */ } WIRE_ATTR kib_putreq_msg_t; typedef struct { __u64 ibpam_src_cookie; /* reflected completion cookie */ __u64 ibpam_dst_cookie; /* opaque completion cookie */ kib_rdma_desc_t ibpam_rd; /* sender's sink buffer */ } WIRE_ATTR kib_putack_msg_t; typedef struct { lnet_hdr_t ibgm_hdr; /* portals header */ __u64 ibgm_cookie; /* opaque completion cookie */ kib_rdma_desc_t ibgm_rd; /* rdma descriptor */ } WIRE_ATTR kib_get_msg_t; typedef struct { __u64 ibcm_cookie; /* opaque completion cookie */ __s32 ibcm_status; /* < 0 failure: >= 0 length */ } 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_connparams_t connparams; kib_immediate_msg_t immediate; kib_putreq_msg_t putreq; kib_putack_msg_t putack; kib_get_msg_t get; kib_completion_msg_t completion; } WIRE_ATTR ibm_u; } WIRE_ATTR kib_msg_t; #define IBLND_MSG_MAGIC LNET_PROTO_IB_MAGIC /* unique magic */ #define IBLND_MSG_VERSION 0x11 #define IBLND_MSG_CONNREQ 0xc0 /* connection request */ #define IBLND_MSG_CONNACK 0xc1 /* connection acknowledge */ #define IBLND_MSG_NOOP 0xd0 /* nothing (just credits) */ #define IBLND_MSG_IMMEDIATE 0xd1 /* immediate */ #define IBLND_MSG_PUT_REQ 0xd2 /* putreq (src->sink) */ #define IBLND_MSG_PUT_NAK 0xd3 /* completion (sink->src) */ #define IBLND_MSG_PUT_ACK 0xd4 /* putack (sink->src) */ #define IBLND_MSG_PUT_DONE 0xd5 /* completion (src->sink) */ #define IBLND_MSG_GET_REQ 0xd6 /* getreq (sink->src) */ #define IBLND_MSG_GET_DONE 0xd7 /* completion (src->sink: all OK) */ typedef struct { __u32 ibr_magic; /* sender's magic */ __u16 ibr_version; /* sender's version */ __u8 ibr_why; /* reject reason */ } WIRE_ATTR kib_rej_t; /* connection rejection reasons */ #define IBLND_REJECT_CONN_RACE 1 /* You lost connection race */ #define IBLND_REJECT_NO_RESOURCES 2 /* Out of memory/conns etc */ #define IBLND_REJECT_FATAL 3 /* Anything else */ /***********************************************************************/ 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) */ enum ib_wc_status rx_status; /* completion status */ kib_msg_t *rx_msg; /* message buffer (host vaddr) */ __u64 rx_msgaddr; /* message buffer (I/O addr) */ DECLARE_PCI_UNMAP_ADDR (rx_msgunmap); /* for dma_unmap_single() */ struct ib_recv_wr rx_wrq; /* receive work item... */ struct ib_sge rx_sge; /* ...and its memory */ } kib_rx_t; #define IBLND_POSTRX_DONT_POST 0 /* don't post */ #define IBLND_POSTRX_NO_CREDIT 1 /* post: no credits */ #define IBLND_POSTRX_PEER_CREDIT 2 /* post: give peer back 1 credit */ #define IBLND_POSTRX_RSRVD_CREDIT 3 /* post: give myself back 1 reserved credit */ 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_sending; /* # tx callbacks outstanding */ int tx_queued; /* queued for sending */ int tx_waiting; /* waiting for peer */ int tx_status; /* LNET completion status */ unsigned long tx_deadline; /* completion deadline */ __u64 tx_cookie; /* completion cookie */ lnet_msg_t *tx_lntmsg[2]; /* lnet msgs to finalize on completion */ kib_msg_t *tx_msg; /* message buffer (host vaddr) */ __u64 tx_msgaddr; /* message buffer (I/O addr) */ DECLARE_PCI_UNMAP_ADDR (tx_msgunmap); /* for dma_unmap_single() */ int tx_nwrq; /* # send work items */ #if IBLND_MAP_ON_DEMAND struct ib_send_wr tx_wrq[2]; /* send work items... */ struct ib_sge tx_sge[2]; /* ...and their memory */ kib_rdma_desc_t tx_rd[1]; /* rdma descriptor */ __u64 *tx_pages; /* rdma phys page addrs */ struct ib_pool_fmr *tx_fmr; /* rdma mapping (mapped if != NULL) */ #else struct ib_send_wr *tx_wrq; /* send work items... */ struct ib_sge *tx_sge; /* ...and their memory */ kib_rdma_desc_t *tx_rd; /* rdma descriptor */ int tx_nfrags; /* # entries in... */ struct scatterlist *tx_frags; /* dma_map_sg descriptor */ int tx_dmadir; /* dma direction */ #endif } kib_tx_t; typedef struct kib_connvars { /* connection-in-progress variables */ kib_msg_t cv_msg; } kib_connvars_t; typedef struct kib_conn { struct kib_peer *ibc_peer; /* owning peer */ struct list_head ibc_list; /* stash on peer's conn list */ struct list_head ibc_sched_list; /* schedule for attention */ __u64 ibc_incarnation; /* which instance of the peer */ 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;/* # ACK/DONE msg credits */ int ibc_comms_error; /* set on comms error */ int ibc_nrx:8; /* receive buffers owned */ int ibc_scheduled:1; /* scheduled for attention */ int ibc_ready:1; /* CQ callback fired */ unsigned long ibc_last_send; /* time of last send */ struct list_head ibc_early_rxs; /* rxs completed before ESTABLISHED */ struct list_head ibc_tx_queue; /* sends that need a credit */ struct list_head ibc_tx_queue_nocred;/* sends that don't need a credit */ struct list_head ibc_tx_queue_rsrvd; /* sends that need to reserve an ACK/DONE msg */ 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 */ struct rdma_cm_id *ibc_cmid; /* CM id */ struct ib_cq *ibc_cq; /* completion queue */ kib_connvars_t *ibc_connvars; /* in-progress connection state */ } kib_conn_t; #define IBLND_CONN_INIT 0 /* being intialised */ #define IBLND_CONN_ACTIVE_CONNECT 1 /* active sending req */ #define IBLND_CONN_PASSIVE_WAIT 2 /* passive waiting for rtu */ #define IBLND_CONN_ESTABLISHED 3 /* connection established */ #define IBLND_CONN_CLOSING 4 /* being closed */ #define IBLND_CONN_DISCONNECTED 5 /* disconnected */ typedef struct kib_peer { struct list_head ibp_list; /* stash on global peer list */ lnet_nid_t ibp_nid; /* who's on the other end(s) */ lnet_ni_t *ibp_ni; /* LNet interface */ atomic_t ibp_refcount; /* # users */ 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 */ 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 kiblnd_data; extern kib_tunables_t kiblnd_tunables; #define kiblnd_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 kiblnd_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(&kiblnd_data.kib_connd_lock, flags); \ list_add_tail(&(conn)->ibc_list, \ &kiblnd_data.kib_connd_zombies); \ wake_up(&kiblnd_data.kib_connd_waitq); \ spin_unlock_irqrestore(&kiblnd_data.kib_connd_lock, flags); \ } \ } while (0) #define kiblnd_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 kiblnd_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)) \ kiblnd_destroy_peer(peer); \ } while (0) static inline struct list_head * kiblnd_nid2peerlist (lnet_nid_t nid) { unsigned int hash = ((unsigned int)nid) % kiblnd_data.kib_peer_hash_size; return (&kiblnd_data.kib_peers [hash]); } static inline int kiblnd_peer_active (kib_peer_t *peer) { /* Am I in the peer hash table? */ return (!list_empty(&peer->ibp_list)); } static inline kib_conn_t * kiblnd_get_conn_locked (kib_peer_t *peer) { LASSERT (!list_empty(&peer->ibp_conns)); /* just return the first connection */ return list_entry(peer->ibp_conns.next, kib_conn_t, ibc_list); } static inline int kiblnd_send_keepalive(kib_conn_t *conn) { return (*kiblnd_tunables.kib_keepalive > 0) && time_after(jiffies, conn->ibc_last_send + *kiblnd_tunables.kib_keepalive*HZ); } static inline void kiblnd_abort_receives(kib_conn_t *conn) { ib_modify_qp(conn->ibc_cmid->qp, &kiblnd_data.kib_error_qpa, IB_QP_STATE); } /* CAVEAT EMPTOR: We rely on descriptor alignment to allow us to use the * lowest bits of the work request id to stash the work item type. */ #define IBLND_WID_TX 0 #define IBLND_WID_RDMA 1 #define IBLND_WID_RX 2 #define IBLND_WID_MASK 3UL static inline __u64 kiblnd_ptr2wreqid (void *ptr, int type) { unsigned long lptr = (unsigned long)ptr; LASSERT ((lptr & IBLND_WID_MASK) == 0); LASSERT ((type & ~IBLND_WID_MASK) == 0); return (__u64)(lptr | type); } static inline void * kiblnd_wreqid2ptr (__u64 wreqid) { return (void *)(((unsigned long)wreqid) & ~IBLND_WID_MASK); } static inline int kiblnd_wreqid2type (__u64 wreqid) { return (wreqid & IBLND_WID_MASK); } static inline void kiblnd_set_conn_state (kib_conn_t *conn, int state) { conn->ibc_state = state; mb(); } #if IBLND_MAP_ON_DEMAND static inline int kiblnd_rd_size (kib_rdma_desc_t *rd) { return rd->rd_nob; } #else static inline int kiblnd_rd_size (kib_rdma_desc_t *rd) { int i; int size; for (i = size = 0; i < rd->rd_nfrags; i++) size += rd->rd_frags[i].rf_nob; return size; } #endif #if (IBLND_OFED_VERSION == 102) static inline __u64 kiblnd_dma_map_single(struct ib_device *dev, void *msg, size_t size, enum dma_data_direction direction) { return ib_dma_map_single(dev, msg, size, direction); } static inline void kiblnd_dma_unmap_single(struct ib_device *dev, __u64 addr, size_t size, enum dma_data_direction direction) { ib_dma_unmap_single(dev, addr, size, direction); } #define KIBLND_UNMAP_ADDR_SET(p, m, a) do {} while (0) #define KIBLND_UNMAP_ADDR(p, m, a) (a) static inline int kiblnd_dma_map_sg(struct ib_device *dev, struct scatterlist *sg, int nents, enum dma_data_direction direction) { return ib_dma_map_sg(dev, sg, nents, direction); } static inline void kiblnd_dma_unmap_sg(struct ib_device *dev, struct scatterlist *sg, int nents, enum dma_data_direction direction) { ib_dma_unmap_sg(dev, sg, nents, direction); } static inline __u64 kiblnd_sg_dma_address(struct ib_device *dev, struct scatterlist *sg) { return ib_sg_dma_address(dev, sg); } static inline unsigned int kiblnd_sg_dma_len(struct ib_device *dev, struct scatterlist *sg) { return ib_sg_dma_len(dev, sg); } /* XXX We use KIBLND_CONN_PARAM(e) as writable buffer, it's not strictly * right because OFED1.2 defines it as const, to use it we have to add * (void *) cast to overcome "const" */ #define KIBLND_CONN_PARAM(e) ((e)->param.conn.private_data) #define KIBLND_CONN_PARAM_LEN(e) ((e)->param.conn.private_data_len) #elif (IBLND_OFED_VERSION == 101) static inline dma_addr_t kiblnd_dma_map_single(struct ib_device *dev, void *msg, size_t size, enum dma_data_direction direction) { return dma_map_single(dev->dma_device, msg, size, direction); } static inline void kiblnd_dma_unmap_single(struct ib_device *dev, dma_addr_t addr, size_t size, enum dma_data_direction direction) { dma_unmap_single(dev->dma_device, addr, size, direction); } #define KIBLND_UNMAP_ADDR_SET(p, m, a) pci_unmap_addr_set(p, m, a) #define KIBLND_UNMAP_ADDR(p, m, a) pci_unmap_addr(p, m) static inline int kiblnd_dma_map_sg(struct ib_device *dev, struct scatterlist *sg, int nents, enum dma_data_direction direction) { return dma_map_sg(dev->dma_device, sg, nents, direction); } static inline void kiblnd_dma_unmap_sg(struct ib_device *dev, struct scatterlist *sg, int nents, enum dma_data_direction direction) { return dma_unmap_sg(dev->dma_device, sg, nents, direction); } static inline dma_addr_t kiblnd_sg_dma_address(struct ib_device *dev, struct scatterlist *sg) { return sg_dma_address(sg); } static inline unsigned int kiblnd_sg_dma_len(struct ib_device *dev, struct scatterlist *sg) { return sg_dma_len(sg); } #define KIBLND_CONN_PARAM(e) ((e)->private_data) #define KIBLND_CONN_PARAM_LEN(e) ((e)->private_data_len) #endif int kiblnd_startup (lnet_ni_t *ni); void kiblnd_shutdown (lnet_ni_t *ni); int kiblnd_ctl (lnet_ni_t *ni, unsigned int cmd, void *arg); int kiblnd_tunables_init(void); void kiblnd_tunables_fini(void); int kiblnd_connd (void *arg); int kiblnd_scheduler(void *arg); int kiblnd_thread_start (int (*fn)(void *arg), void *arg); int kiblnd_alloc_pages (kib_pages_t **pp, int npages); void kiblnd_free_pages (kib_pages_t *p); int kiblnd_cm_callback(struct rdma_cm_id *cmid, struct rdma_cm_event *event); int kiblnd_create_peer (lnet_ni_t *ni, kib_peer_t **peerp, lnet_nid_t nid); void kiblnd_destroy_peer (kib_peer_t *peer); void kiblnd_destroy_dev (kib_dev_t *dev); void kiblnd_unlink_peer_locked (kib_peer_t *peer); void kiblnd_peer_alive (kib_peer_t *peer); kib_peer_t *kiblnd_find_peer_locked (lnet_nid_t nid); void kiblnd_peer_connect_failed (kib_peer_t *peer, int active, int error); int kiblnd_close_stale_conns_locked (kib_peer_t *peer, __u64 incarnation); void kiblnd_connreq_done(kib_conn_t *conn, int status); kib_conn_t *kiblnd_create_conn (kib_peer_t *peer, struct rdma_cm_id *cmid, int state); void kiblnd_destroy_conn (kib_conn_t *conn); void kiblnd_close_conn (kib_conn_t *conn, int error); void kiblnd_close_conn_locked (kib_conn_t *conn, int error); int kiblnd_init_rdma (lnet_ni_t *ni, kib_tx_t *tx, int type, int nob, kib_rdma_desc_t *dstrd, __u64 dstcookie); void kiblnd_queue_tx_locked (kib_tx_t *tx, kib_conn_t *conn); void kiblnd_queue_tx (kib_tx_t *tx, kib_conn_t *conn); void kiblnd_init_tx_msg (lnet_ni_t *ni, kib_tx_t *tx, int type, int body_nob); void kiblnd_txlist_done (lnet_ni_t *ni, struct list_head *txlist, int status); void kiblnd_check_sends (kib_conn_t *conn); void kiblnd_qp_event(struct ib_event *event, void *arg); void kiblnd_cq_event(struct ib_event *event, void *arg); void kiblnd_cq_completion(struct ib_cq *cq, void *arg); void kiblnd_init_msg (kib_msg_t *msg, int type, int body_nob); void kiblnd_pack_msg (lnet_ni_t *ni, kib_msg_t *msg, int credits, lnet_nid_t dstnid, __u64 dststamp); int kiblnd_unpack_msg(kib_msg_t *msg, int nob); int kiblnd_post_rx (kib_rx_t *rx, int credit); int kiblnd_send(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg); int kiblnd_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);