/* -*- 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 2008 Sun Microsystems, Inc. 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/iiblnd/iiblnd.h * * Author: Eric Barton */ #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 #define DEBUG_SUBSYSTEM S_LND #include #include #include #include #include #define GCC_VERSION (__GNUC__ * 10000 \ + __GNUC_MINOR__ * 100 \ + __GNUC_PATCHLEVEL__) /* Test for GCC > 3.2.2 */ #if GCC_VERSION <= 30202 /* GCC 3.2.2, and presumably several versions before it, will * miscompile this driver. See * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=9853. */ #error Invalid GCC version. Must use GCC >= 3.2.3 #endif #ifdef CONFIG_SMP # define IBNAL_N_SCHED num_online_cpus() /* # schedulers */ #else # define IBNAL_N_SCHED 1 /* # schedulers */ #endif #define IBNAL_USE_FMR 0 /* map on demand v. use whole mem mapping */ #define KIBLND_DETAILED_DEBUG 0 /* 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 7 /* when to eagerly return credits */ #define IBNAL_MSG_SIZE (4<<10) /* max size of queued messages (inc hdr) */ #define IBNAL_RDMA_BASE 0x0eeb0000 #define IBNAL_STARTING_PSN 1 /* QP tunables */ /* 7 indicates infinite retry attempts, Infinicon recommended 5 */ #define IBNAL_RETRY 5 /* # times to retry */ #define IBNAL_RNR_RETRY 5 /* */ #define IBNAL_CM_RETRY 5 /* # times to retry connection */ #define IBNAL_FLOW_CONTROL 1 #define IBNAL_ACK_TIMEOUT 20 /* supposedly 4 secs */ #define IBNAL_EE_FLOW 1 #define IBNAL_LOCAL_SUB 1 #define IBNAL_FAILOVER_ACCEPTED 0 /************************/ /* 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) #if IBNAL_USE_FMR # define IBNAL_MAX_RDMA_FRAGS 1 # define IBNAL_CONCURRENT_SENDS IBNAL_RX_MSGS #else # define IBNAL_MAX_RDMA_FRAGS LNET_MAX_IOV # define IBNAL_CONCURRENT_SENDS IBNAL_MSG_QUEUE_SIZE #endif /* 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) #define IBNAL_CQ_ENTRIES() (IBNAL_TX_MSGS() * (1 + IBNAL_MAX_RDMA_FRAGS) + \ (IBNAL_RX_MSGS * *kibnal_tunables.kib_concurrent_peers)) typedef struct { char **kib_hca_basename; /* HCA base name */ char **kib_ipif_basename; /* IPoIB interface base name */ char **kib_service_name; /* global service name */ unsigned int *kib_service_number; /* global service number */ 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 timeout (seconds) */ int *kib_ntx; /* # tx descs */ int *kib_credits; /* # concurrent sends */ int *kib_peercredits; /* # concurrent sends to 1 peer */ int *kib_sd_retries; /* # concurrent sends to 1 peer */ int *kib_concurrent_sends; /* send work queue sizing */ #if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM cfs_sysctl_table_header_t *kib_sysctl; /* sysctl interface */ #endif } kib_tunables_t; /* NB The Infinicon stack has specific typedefs for some things * (e.g. IB_{L,R}_KEY), that just map back to __u32 etc */ typedef struct { int ibp_npages; /* # pages */ struct page *ibp_pages[0]; } kib_pages_t; typedef struct { IB_HANDLE md_handle; __u32 md_lkey; __u32 md_rkey; __u64 md_addr; } kib_md_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_ iib instance */ __u64 kib_port_guid; /* my GUID (lo 64 of GID)*/ __u16 kib_port_pkey; /* my pkey, whatever that is */ struct semaphore kib_listener_signal; /* signal completion */ IB_HANDLE kib_listener_cep; /* connection end point */ rwlock_t kib_global_lock; /* stabilize peer/conn ops */ int kib_ready; /* CQ callback fired */ int kib_checking_cq; /* a scheduler is checking the CQ */ struct list_head *kib_peers; /* hash table of all my known peers */ int kib_peer_hash_size; /* size of kib_peers */ atomic_t kib_npeers; /* # peers extant */ atomic_t kib_nconns; /* # connections extant */ struct list_head kib_connd_zombies; /* connections to free */ struct list_head kib_connd_conns; /* connections to progress */ struct list_head kib_connd_peers; /* peers waiting for a connection */ wait_queue_head_t kib_connd_waitq; /* connection daemon sleep here */ spinlock_t kib_connd_lock; /* serialise */ wait_queue_head_t kib_sched_waitq; /* schedulers sleep here */ 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 */ IB_HANDLE kib_hca; /* The HCA */ int kib_port; /* port on the device */ IB_HANDLE kib_pd; /* protection domain */ IB_HANDLE kib_sd; /* SD handle */ IB_HANDLE kib_cq; /* completion queue */ kib_md_t kib_whole_mem; /* whole-mem registration */ int kib_hca_idx; /* my HCA number */ uint64 kib_hca_guids[8]; /* all the HCA guids */ IB_CA_ATTRIBUTES kib_hca_attrs; /* where to get HCA attrs */ COMMAND_CONTROL_PARAMETERS kib_sdretry; /* control SD query retries */ } kib_data_t; #define IBNAL_INIT_NOTHING 0 #define IBNAL_INIT_DATA 1 #define IBNAL_INIT_LIB 2 #define IBNAL_INIT_HCA 3 #define IBNAL_INIT_PORTATTRS 4 #define IBNAL_INIT_SD 5 #define IBNAL_INIT_PD 6 #define IBNAL_INIT_MD 7 #define IBNAL_INIT_TXD 8 #define IBNAL_INIT_CQ 9 #define IBNAL_INIT_ALL 10 /************************************************************************ * Wire message structs. * These are sent in sender's byte order (i.e. receiver flips). * CAVEAT EMPTOR: other structs communicated between nodes (e.g. MAD * private data and SM service info), is LE on the wire. */ typedef struct kib_connparams { __u32 ibcp_queue_depth; __u32 ibcp_max_msg_size; __u32 ibcp_max_frags; } 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 IBNAL_USE_FMR 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; /* # of bytes */ __u64 rf_addr; /* remote io vaddr */ } WIRE_ATTR kib_rdma_frag_t; typedef struct { __u32 rd_key; /* local/remote key */ __u32 rd_nfrag; /* # fragments */ kib_rdma_frag_t rd_frags[0]; /* buffer frags */ } WIRE_ATTR kib_rdma_desc_t; #endif typedef struct { lnet_hdr_t ibprm_hdr; /* LNET 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; /* LNET header */ __u64 ibgm_cookie; /* opaque completion cookie */ kib_rdma_desc_t ibgm_rd; /* sender's sink buffer */ } WIRE_ATTR kib_get_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 */ __u64 ibm_seq; /* sequence number */ 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 IBNAL_MSG_MAGIC LNET_PROTO_IIB_MAGIC /* unique magic */ #define IBNAL_MSG_VERSION 2 /* current protocol version */ #define IBNAL_MSG_VERSION_RDMAREPLYNOTRSRVD 1 /* previous version */ #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 /* immediate */ #define IBNAL_MSG_PUT_REQ 0xd2 /* putreq (src->sink) */ #define IBNAL_MSG_PUT_NAK 0xd3 /* completion (sink->src) */ #define IBNAL_MSG_PUT_ACK 0xd4 /* putack (sink->src) */ #define IBNAL_MSG_PUT_DONE 0xd5 /* completion (src->sink) */ #define IBNAL_MSG_GET_REQ 0xd6 /* getreq (sink->src) */ #define IBNAL_MSG_GET_DONE 0xd7 /* completion (src->sink: all OK) */ /* connection rejection reasons */ #define IBNAL_REJECT_CONN_RACE 0 /* You lost connection race */ #define IBNAL_REJECT_NO_RESOURCES 1 /* Out of memory/conns etc */ #define IBNAL_REJECT_FATAL 2 /* 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) */ __u64 rx_hca_msg; /* pre-mapped buffer (hca vaddr) */ kib_msg_t *rx_msg; /* pre-mapped buffer (host vaddr) */ IB_WORK_REQ2 rx_wrq; IB_LOCAL_DATASEGMENT rx_gl; /* and its 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_queued; /* queued for sending */ int tx_waiting; /* waiting for peer */ int tx_status; /* 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; /* pre-mapped buffer (host vaddr) */ __u64 tx_hca_msg; /* pre-mapped buffer (HCA vaddr) */ int tx_nwrq; /* # send work items */ #if IBNAL_USE_FMR IB_WORK_REQ2 tx_wrq[2]; /* send work items... */ IB_LOCAL_DATASEGMENT tx_gl[2]; /* ...and their memory */ kib_rdma_desc_t tx_rd[1]; /* rdma descriptor */ kib_md_t tx_md; /* mapping */ __u64 *tx_pages; /* page phys addrs */ #else IB_WORK_REQ2 *tx_wrq; /* send work items... */ IB_LOCAL_DATASEGMENT *tx_gl; /* ...and their memory */ kib_rdma_desc_t *tx_rd; /* rdma descriptor (src buffers) */ #endif } kib_tx_t; typedef struct { /* scratchpad during connection establishment */ IB_QP_ATTRIBUTES_QUERY cv_qpattrs; QUERY cv_query; IB_SERVICE_RECORD cv_svcrec; IB_PATH_RECORD cv_path; CM_CONN_INFO cv_cmci; } 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 */ __u64 ibc_incarnation; /* which instance of the peer */ __u64 ibc_txseq; /* tx sequence number */ __u64 ibc_rxseq; /* rx sequence number */ __u32 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_early_rxs; /* rxs completed before ESTABLISHED */ struct list_head ibc_tx_queue_nocred; /* sends that don't need a cred */ 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_HANDLE ibc_qp; /* queue pair */ IB_HANDLE ibc_cep; /* CM endpoint */ kib_connvars_t *ibc_cvars; /* connection scratchpad */ } 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_DISCONNECTING 4 /* to send disconnect req */ #define IBNAL_CONN_DISCONNECTED 5 /* no more QP or CM traffic */ /* types of connection */ #define IBNAL_CONN_ACTIVE 0 /* active connect */ #define IBNAL_CONN_PASSIVE 1 /* passive connect */ #define IBNAL_CONN_WAITING 2 /* waiting for connect */ 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) */ atomic_t ibp_refcount; /* # users */ int ibp_persistence; /* "known" peer refs */ int ibp_version; /* protocol version */ struct list_head ibp_conns; /* all active connections */ struct list_head ibp_tx_queue; /* msgs waiting for a conn */ int ibp_connecting; /* active connects in progress */ int ibp_accepting; /* passive connects in progress */ int ibp_passivewait; /* waiting for peer to connect */ unsigned long ibp_passivewait_deadline; /* when passive wait must complete */ 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_connd_lock, flags); \ list_add_tail(&(conn)->ibc_list, \ &kibnal_data.kib_connd_zombies); \ wake_up(&kibnal_data.kib_connd_waitq); \ spin_unlock_irqrestore(&kibnal_data.kib_connd_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 int kibnal_peer_connecting(kib_peer_t *peer) { /* Am I expecting a connection to materialise? */ return (peer->ibp_connecting != 0 || peer->ibp_accepting != 0 || peer->ibp_passivewait); } static inline void kibnal_queue_tx_locked (kib_tx_t *tx, kib_conn_t *conn) { struct list_head *q; LASSERT (tx->tx_nwrq > 0); /* work items set up */ LASSERT (!tx->tx_queued); /* not queued for sending already */ tx->tx_queued = 1; tx->tx_deadline = jiffies + (*kibnal_tunables.kib_timeout * HZ); if (tx->tx_conn == NULL) { kibnal_conn_addref(conn); tx->tx_conn = conn; LASSERT (tx->tx_msg->ibm_type != IBNAL_MSG_PUT_DONE); } else { LASSERT (tx->tx_conn == conn); LASSERT (tx->tx_msg->ibm_type == IBNAL_MSG_PUT_DONE); } 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_REQ: case IBNAL_MSG_GET_REQ: /* RDMA request: reserve a buffer for the RDMA reply * before sending */ q = &conn->ibc_tx_queue_rsrvd; break; case IBNAL_MSG_PUT_NAK: case IBNAL_MSG_PUT_ACK: case IBNAL_MSG_PUT_DONE: case IBNAL_MSG_GET_DONE: /* RDMA reply/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); } #define KIBNAL_SERVICE_KEY_MASK (IB_SERVICE_RECORD_COMP_SERVICENAME | \ IB_SERVICE_RECORD_COMP_SERVICEDATA8_1 | \ IB_SERVICE_RECORD_COMP_SERVICEDATA8_2 | \ IB_SERVICE_RECORD_COMP_SERVICEDATA8_3 | \ IB_SERVICE_RECORD_COMP_SERVICEDATA8_4 | \ IB_SERVICE_RECORD_COMP_SERVICEDATA8_5 | \ IB_SERVICE_RECORD_COMP_SERVICEDATA8_6 | \ IB_SERVICE_RECORD_COMP_SERVICEDATA8_7 | \ IB_SERVICE_RECORD_COMP_SERVICEDATA8_8) static inline __u64* kibnal_service_nid_field(IB_SERVICE_RECORD *srv) { /* must be consistent with KIBNAL_SERVICE_KEY_MASK */ return (__u64 *)srv->ServiceData8; } static inline void kibnal_set_service_keys(IB_SERVICE_RECORD *srv, lnet_nid_t nid) { char *svc_name = *kibnal_tunables.kib_service_name; LASSERT (strlen(svc_name) < sizeof(srv->ServiceName)); memset (srv->ServiceName, 0, sizeof(srv->ServiceName)); strcpy (srv->ServiceName, svc_name); *kibnal_service_nid_field(srv) = cpu_to_le64(nid); } /* CAVEAT EMPTOR: We rely on tx/rx descriptor alignment to allow us to use the * lowest 2 bits of the work request id to stash the work item type (the op * field is not valid when the wc completes in error). */ #define IBNAL_WID_TX 0 #define IBNAL_WID_RX 1 #define IBNAL_WID_RDMA 2 #define IBNAL_WID_MASK 3UL static inline __u64 kibnal_ptr2wreqid (void *ptr, int type) { unsigned long lptr = (unsigned long)ptr; LASSERT ((lptr & IBNAL_WID_MASK) == 0); LASSERT ((type & ~IBNAL_WID_MASK) == 0); return (__u64)(lptr | type); } static inline void * kibnal_wreqid2ptr (__u64 wreqid) { return (void *)(((unsigned long)wreqid) & ~IBNAL_WID_MASK); } static inline int kibnal_wreqid2type (__u64 wreqid) { return (wreqid & IBNAL_WID_MASK); } static inline void kibnal_set_conn_state (kib_conn_t *conn, int state) { CDEBUG(D_NET,"%p state %d\n", conn, state); conn->ibc_state = state; mb(); } #if IBNAL_USE_FMR static inline int kibnal_rd_size (kib_rdma_desc_t *rd) { return rd->rd_nob; } #else static inline int kibnal_rd_size (kib_rdma_desc_t *rd) { int i; int size; for (i = size = 0; i < rd->rd_nfrag; i++) size += rd->rd_frags[i].rf_nob; return size; } #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 *msg, int delayed, unsigned int niov, struct iovec *iov, lnet_kiov_t *kiov, unsigned int offset, unsigned int mlen, unsigned int rlen); void kibnal_init_msg(kib_msg_t *msg, int type, int body_nob); void kibnal_pack_msg(kib_msg_t *msg, __u32 version, int credits, lnet_nid_t dstnid, __u64 dststamp, __u64 seq); void kibnal_pack_connmsg(kib_msg_t *msg, __u32 version, int nob, int type, lnet_nid_t dstnid, __u64 dststamp); int kibnal_unpack_msg(kib_msg_t *msg, __u32 expected_version, int nob); IB_HANDLE kibnal_create_cep(lnet_nid_t nid); int kibnal_create_peer (kib_peer_t **peerp, lnet_nid_t nid); void kibnal_destroy_peer (kib_peer_t *peer); kib_peer_t *kibnal_find_peer_locked (lnet_nid_t nid); int kibnal_del_peer (lnet_nid_t nid); void kibnal_peer_alive (kib_peer_t *peer); void kibnal_unlink_peer_locked (kib_peer_t *peer); int kibnal_add_persistent_peer (lnet_nid_t nid); int kibnal_close_stale_conns_locked (kib_peer_t *peer, __u64 incarnation); int kibnal_conn_rts(kib_conn_t *conn, __u32 qpn, __u8 resp_res, __u8 init_depth, __u32 psn); kib_conn_t *kibnal_create_conn (lnet_nid_t nid, int proto_version); void kibnal_destroy_conn (kib_conn_t *conn); void kibnal_listen_callback(IB_HANDLE cep, CM_CONN_INFO *info, void *arg); int kibnal_alloc_pages (kib_pages_t **pp, int npages); void kibnal_free_pages (kib_pages_t *p); void kibnal_queue_tx (kib_tx_t *tx, kib_conn_t *conn); void kibnal_txlist_done (struct list_head *txlist, int status); int kibnal_post_receives (kib_conn_t *conn); int kibnal_init_rdma (kib_tx_t *tx, int type, int nob, kib_rdma_desc_t *dstrd, __u64 dstcookie); void kibnal_check_sends (kib_conn_t *conn); void kibnal_close_conn_locked (kib_conn_t *conn, int error); int kibnal_thread_start (int (*fn)(void *arg), void *arg); int kibnal_scheduler(void *arg); int kibnal_connd (void *arg); void kibnal_init_tx_msg (kib_tx_t *tx, int type, int body_nob); void kibnal_close_conn (kib_conn_t *conn, int why); 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, unsigned int offset, unsigned int nob); void kibnal_hca_async_callback (void *hca_arg, IB_EVENT_RECORD *ev); void kibnal_hca_callback (void *hca_arg, void *cq_arg); int kibnal_tunables_init (void); void kibnal_tunables_fini (void);