X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lnet%2Finclude%2Flnet%2Flib-lnet.h;h=d23e4b147f175552781b489e8a984b48e9fbe919;hp=4daf219c153fc56599e350e9aa6249440c500b15;hb=88f761bc00c7fb29db4f80594ae864493bdd5071;hpb=23de47e82bd999ec651f927097922413527cca71;ds=sidebyside diff --git a/lnet/include/lnet/lib-lnet.h b/lnet/include/lnet/lib-lnet.h index 4daf219..d23e4b1 100644 --- a/lnet/include/lnet/lib-lnet.h +++ b/lnet/include/lnet/lib-lnet.h @@ -1,460 +1,776 @@ -/* -*- 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 * - * lib-p30.h + * 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) 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 Sun Microsystems, Inc. + * + * lnet/include/lnet/lib-lnet.h * * Top level include for library side routines */ -#ifndef _LIB_P30_H_ -#define _LIB_P30_H_ - -#include "build_check.h" +#ifndef __LNET_LIB_LNET_H__ +#define __LNET_LIB_LNET_H__ -#ifdef __KERNEL__ -# include -# include -#else -# include -# include -# include -#endif -#include -#include -#include -#include -#include - -static inline int ptl_is_wire_handle_none (ptl_handle_wire_t *wh) -{ - return (wh->wh_interface_cookie == PTL_WIRE_HANDLE_NONE.wh_interface_cookie && - wh->wh_object_cookie == PTL_WIRE_HANDLE_NONE.wh_object_cookie); -} - -#ifdef __KERNEL__ -#define LIB_LOCK(nal,flags) \ - spin_lock_irqsave(&(nal)->libnal_ni.ni_lock, flags) -#define LIB_UNLOCK(nal,flags) \ - spin_unlock_irqrestore(&(nal)->libnal_ni.ni_lock, flags) -#else -#define LIB_LOCK(nal,flags) \ - (pthread_mutex_lock(&(nal)->libnal_ni.ni_mutex), (flags) = 0) -#define LIB_UNLOCK(nal,flags) \ - pthread_mutex_unlock(&(nal)->libnal_ni.ni_mutex) +#ifndef __KERNEL__ +# error This include is only for kernel use. #endif +#include +#include +#include +#include + +extern lnet_t the_lnet; /* THE network */ -#ifdef PTL_USE_LIB_FREELIST +#if (BITS_PER_LONG == 32) +/* 2 CPTs, allowing more CPTs might make us under memory pressure */ +# define LNET_CPT_MAX_BITS 1 -#define MAX_MES 2048 -#define MAX_MDS 2048 -#define MAX_MSGS 2048 /* Outstanding messages */ -#define MAX_EQS 512 +#else /* 64-bit system */ +/* + * 256 CPTs for thousands of CPUs, allowing more CPTs might make us + * under risk of consuming all lh_cookie. + */ +# define LNET_CPT_MAX_BITS 8 +#endif /* BITS_PER_LONG == 32 */ -extern int lib_freelist_init (lib_nal_t *nal, lib_freelist_t *fl, int nobj, int objsize); -extern void lib_freelist_fini (lib_nal_t *nal, lib_freelist_t *fl); +/* max allowed CPT number */ +#define LNET_CPT_MAX (1 << LNET_CPT_MAX_BITS) -static inline void * -lib_freelist_alloc (lib_freelist_t *fl) +#define LNET_CPT_NUMBER (the_lnet.ln_cpt_number) +#define LNET_CPT_BITS (the_lnet.ln_cpt_bits) +#define LNET_CPT_MASK ((1ULL << LNET_CPT_BITS) - 1) + +/** exclusive lock */ +#define LNET_LOCK_EX CFS_PERCPT_LOCK_EX + +static inline int lnet_is_route_alive(lnet_route_t *route) +{ + if (!route->lr_gateway->lp_alive) + return 0; /* gateway is down */ + if ((route->lr_gateway->lp_ping_feats & + LNET_PING_FEAT_NI_STATUS) == 0) + return 1; /* no NI status, assume it's alive */ + /* has NI status, check # down NIs */ + return route->lr_downis == 0; +} + +static inline int lnet_is_wire_handle_none (lnet_handle_wire_t *wh) { - /* ALWAYS called with liblock held */ - lib_freeobj_t *o; + return (wh->wh_interface_cookie == LNET_WIRE_HANDLE_COOKIE_NONE && + wh->wh_object_cookie == LNET_WIRE_HANDLE_COOKIE_NONE); +} - if (list_empty (&fl->fl_list)) - return (NULL); - - o = list_entry (fl->fl_list.next, lib_freeobj_t, fo_list); - list_del (&o->fo_list); - return ((void *)&o->fo_contents); +static inline int lnet_md_exhausted (lnet_libmd_t *md) +{ + return (md->md_threshold == 0 || + ((md->md_options & LNET_MD_MAX_SIZE) != 0 && + md->md_offset + md->md_max_size > md->md_length)); } -static inline void -lib_freelist_free (lib_freelist_t *fl, void *obj) +static inline int lnet_md_unlinkable (lnet_libmd_t *md) { - /* ALWAYS called with liblock held */ - lib_freeobj_t *o = list_entry (obj, lib_freeobj_t, fo_contents); - - list_add (&o->fo_list, &fl->fl_list); + /* Should unlink md when its refcount is 0 and either: + * - md has been flagged for deletion (by auto unlink or LNetM[DE]Unlink, + * in the latter case md may not be exhausted). + * - auto unlink is on and md is exhausted. + */ + if (md->md_refcount != 0) + return 0; + + if ((md->md_flags & LNET_MD_FLAG_ZOMBIE) != 0) + return 1; + + return ((md->md_flags & LNET_MD_FLAG_AUTO_UNLINK) != 0 && + lnet_md_exhausted(md)); } +#define lnet_cpt_table() (the_lnet.ln_cpt_table) +#define lnet_cpt_current() cfs_cpt_current(the_lnet.ln_cpt_table, 1) -static inline lib_eq_t * -lib_eq_alloc (lib_nal_t *nal) +static inline int +lnet_cpt_of_cookie(__u64 cookie) { - /* NEVER called with liblock held */ - unsigned long flags; - lib_eq_t *eq; - - LIB_LOCK (nal, flags); - eq = (lib_eq_t *)lib_freelist_alloc (&nal->libnal_ni.ni_free_eqs); - LIB_UNLOCK (nal, flags); + unsigned int cpt = (cookie >> LNET_COOKIE_TYPE_BITS) & LNET_CPT_MASK; - return (eq); + /* LNET_CPT_NUMBER doesn't have to be power2, which means we can + * get illegal cpt from it's invalid cookie */ + return cpt < LNET_CPT_NUMBER ? cpt : cpt % LNET_CPT_NUMBER; } static inline void -lib_eq_free (lib_nal_t *nal, lib_eq_t *eq) +lnet_res_lock(int cpt) { - /* ALWAYS called with liblock held */ - lib_freelist_free (&nal->libnal_ni.ni_free_eqs, eq); + cfs_percpt_lock(the_lnet.ln_res_lock, cpt); } -static inline lib_md_t * -lib_md_alloc (lib_nal_t *nal, ptl_md_t *umd) +static inline void +lnet_res_unlock(int cpt) { - /* NEVER called with liblock held */ - unsigned long flags; - lib_md_t *md; - - LIB_LOCK (nal, flags); - md = (lib_md_t *)lib_freelist_alloc (&nal->libnal_ni.ni_free_mds); - LIB_UNLOCK (nal, flags); - - return (md); + cfs_percpt_unlock(the_lnet.ln_res_lock, cpt); } -static inline void -lib_md_free (lib_nal_t *nal, lib_md_t *md) +static inline int +lnet_res_lock_current(void) { - /* ALWAYS called with liblock held */ - lib_freelist_free (&nal->libnal_ni.ni_free_mds, md); + int cpt = lnet_cpt_current(); + + lnet_res_lock(cpt); + return cpt; } -static inline lib_me_t * -lib_me_alloc (lib_nal_t *nal) +static inline void +lnet_net_lock(int cpt) { - /* NEVER called with liblock held */ - unsigned long flags; - lib_me_t *me; - - LIB_LOCK (nal, flags); - me = (lib_me_t *)lib_freelist_alloc (&nal->libnal_ni.ni_free_mes); - LIB_UNLOCK (nal, flags); - - return (me); + cfs_percpt_lock(the_lnet.ln_net_lock, cpt); } static inline void -lib_me_free (lib_nal_t *nal, lib_me_t *me) +lnet_net_unlock(int cpt) { - /* ALWAYS called with liblock held */ - lib_freelist_free (&nal->libnal_ni.ni_free_mes, me); + cfs_percpt_unlock(the_lnet.ln_net_lock, cpt); } -static inline lib_msg_t * -lib_msg_alloc (lib_nal_t *nal) +static inline int +lnet_net_lock_current(void) { - /* NEVER called with liblock held */ - unsigned long flags; - lib_msg_t *msg; - - LIB_LOCK (nal, flags); - msg = (lib_msg_t *)lib_freelist_alloc (&nal->libnal_ni.ni_free_msgs); - LIB_UNLOCK (nal, flags); + int cpt = lnet_cpt_current(); - if (msg != NULL) { - /* NULL pointers, clear flags etc */ - memset (msg, 0, sizeof (*msg)); - msg->ack_wmd = PTL_WIRE_HANDLE_NONE; - } - return(msg); + lnet_net_lock(cpt); + return cpt; } -static inline void -lib_msg_free (lib_nal_t *nal, lib_msg_t *msg) -{ - /* ALWAYS called with liblock held */ - lib_freelist_free (&nal->libnal_ni.ni_free_msgs, msg); -} +#define LNET_LOCK() lnet_net_lock(LNET_LOCK_EX) +#define LNET_UNLOCK() lnet_net_unlock(LNET_LOCK_EX) -#else +#define lnet_ptl_lock(ptl) spin_lock(&(ptl)->ptl_lock) +#define lnet_ptl_unlock(ptl) spin_unlock(&(ptl)->ptl_lock) +#define lnet_eq_wait_lock() spin_lock(&the_lnet.ln_eq_wait_lock) +#define lnet_eq_wait_unlock() spin_unlock(&the_lnet.ln_eq_wait_lock) +#define lnet_ni_lock(ni) spin_lock(&(ni)->ni_lock) +#define lnet_ni_unlock(ni) spin_unlock(&(ni)->ni_lock) +#define LNET_MUTEX_LOCK(m) mutex_lock(m) +#define LNET_MUTEX_UNLOCK(m) mutex_unlock(m) -static inline lib_eq_t * -lib_eq_alloc (lib_nal_t *nal) +#define MAX_PORTALS 64 + +static inline lnet_eq_t * +lnet_eq_alloc (void) { - /* NEVER called with liblock held */ - lib_eq_t *eq; + lnet_eq_t *eq; - PORTAL_ALLOC(eq, sizeof(*eq)); + LIBCFS_ALLOC(eq, sizeof(*eq)); return (eq); } static inline void -lib_eq_free (lib_nal_t *nal, lib_eq_t *eq) +lnet_eq_free(lnet_eq_t *eq) { - /* ALWAYS called with liblock held */ - PORTAL_FREE(eq, sizeof(*eq)); + LIBCFS_FREE(eq, sizeof(*eq)); } -static inline lib_md_t * -lib_md_alloc (lib_nal_t *nal, ptl_md_t *umd) +static inline lnet_libmd_t * +lnet_md_alloc (lnet_md_t *umd) { - /* NEVER called with liblock held */ - lib_md_t *md; - int size; - int niov; + lnet_libmd_t *md; + unsigned int size; + unsigned int niov; - if ((umd->options & PTL_MD_KIOV) != 0) { + if ((umd->options & LNET_MD_KIOV) != 0) { niov = umd->length; - size = offsetof(lib_md_t, md_iov.kiov[niov]); + size = offsetof(lnet_libmd_t, md_iov.kiov[niov]); } else { - niov = ((umd->options & PTL_MD_IOVEC) != 0) ? + niov = ((umd->options & LNET_MD_IOVEC) != 0) ? umd->length : 1; - size = offsetof(lib_md_t, md_iov.iov[niov]); + size = offsetof(lnet_libmd_t, md_iov.iov[niov]); } - PORTAL_ALLOC(md, size); + LIBCFS_ALLOC(md, size); - if (md != NULL) { - /* Set here in case of early free */ - md->options = umd->options; - md->md_niov = niov; - } - - return (md); + if (md != NULL) { + /* Set here in case of early free */ + md->md_options = umd->options; + md->md_niov = niov; + INIT_LIST_HEAD(&md->md_list); + } + + return md; } -static inline void -lib_md_free (lib_nal_t *nal, lib_md_t *md) +static inline void +lnet_md_free(lnet_libmd_t *md) { - /* ALWAYS called with liblock held */ - int size; + unsigned int size; - if ((md->options & PTL_MD_KIOV) != 0) - size = offsetof(lib_md_t, md_iov.kiov[md->md_niov]); - else - size = offsetof(lib_md_t, md_iov.iov[md->md_niov]); + if ((md->md_options & LNET_MD_KIOV) != 0) + size = offsetof(lnet_libmd_t, md_iov.kiov[md->md_niov]); + else + size = offsetof(lnet_libmd_t, md_iov.iov[md->md_niov]); - PORTAL_FREE(md, size); + LIBCFS_FREE(md, size); } -static inline lib_me_t * -lib_me_alloc (lib_nal_t *nal) +static inline lnet_me_t * +lnet_me_alloc (void) { - /* NEVER called with liblock held */ - lib_me_t *me; + lnet_me_t *me; - PORTAL_ALLOC(me, sizeof(*me)); + LIBCFS_ALLOC(me, sizeof(*me)); return (me); } -static inline void -lib_me_free(lib_nal_t *nal, lib_me_t *me) +static inline void +lnet_me_free(lnet_me_t *me) { - /* ALWAYS called with liblock held */ - PORTAL_FREE(me, sizeof(*me)); + LIBCFS_FREE(me, sizeof(*me)); } -static inline lib_msg_t * -lib_msg_alloc(lib_nal_t *nal) +static inline lnet_msg_t * +lnet_msg_alloc(void) { - /* NEVER called with liblock held; may be in interrupt... */ - lib_msg_t *msg; + lnet_msg_t *msg; - if (in_interrupt()) - PORTAL_ALLOC_ATOMIC(msg, sizeof(*msg)); - else - PORTAL_ALLOC(msg, sizeof(*msg)); + LIBCFS_ALLOC(msg, sizeof(*msg)); - if (msg != NULL) { - /* NULL pointers, clear flags etc */ - memset (msg, 0, sizeof (*msg)); - msg->ack_wmd = PTL_WIRE_HANDLE_NONE; - } + /* no need to zero, LIBCFS_ALLOC does for us */ return (msg); } -static inline void -lib_msg_free(lib_nal_t *nal, lib_msg_t *msg) +static inline void +lnet_msg_free(lnet_msg_t *msg) { - /* ALWAYS called with liblock held */ - PORTAL_FREE(msg, sizeof(*msg)); + LASSERT(!msg->msg_onactivelist); + LIBCFS_FREE(msg, sizeof(*msg)); } -#endif -extern lib_handle_t *lib_lookup_cookie (lib_nal_t *nal, __u64 cookie, int type); -extern void lib_initialise_handle (lib_nal_t *nal, lib_handle_t *lh, int type); -extern void lib_invalidate_handle (lib_nal_t *nal, lib_handle_t *lh); +lnet_libhandle_t *lnet_res_lh_lookup(struct lnet_res_container *rec, + __u64 cookie); +void lnet_res_lh_initialize(struct lnet_res_container *rec, + lnet_libhandle_t *lh); +static inline void +lnet_res_lh_invalidate(lnet_libhandle_t *lh) +{ + /* ALWAYS called with resource lock held */ + /* NB: cookie is still useful, don't reset it */ + list_del(&lh->lh_hash_chain); +} static inline void -ptl_eq2handle (ptl_handle_eq_t *handle, lib_nal_t *nal, lib_eq_t *eq) +lnet_eq2handle (lnet_handle_eq_t *handle, lnet_eq_t *eq) { - handle->nal_idx = nal->libnal_ni.ni_api->nal_handle.nal_idx; + if (eq == NULL) { + LNetInvalidateHandle(handle); + return; + } + handle->cookie = eq->eq_lh.lh_cookie; } -static inline lib_eq_t * -ptl_handle2eq (ptl_handle_eq_t *handle, lib_nal_t *nal) +static inline lnet_eq_t * +lnet_handle2eq(lnet_handle_eq_t *handle) { - /* ALWAYS called with liblock held */ - lib_handle_t *lh = lib_lookup_cookie (nal, handle->cookie, - PTL_COOKIE_TYPE_EQ); - if (lh == NULL) - return (NULL); + /* ALWAYS called with resource lock held */ + lnet_libhandle_t *lh; + + lh = lnet_res_lh_lookup(&the_lnet.ln_eq_container, handle->cookie); + if (lh == NULL) + return NULL; - return (lh_entry (lh, lib_eq_t, eq_lh)); + return lh_entry(lh, lnet_eq_t, eq_lh); } static inline void -ptl_md2handle (ptl_handle_md_t *handle, lib_nal_t *nal, lib_md_t *md) +lnet_md2handle (lnet_handle_md_t *handle, lnet_libmd_t *md) { - handle->nal_idx = nal->libnal_ni.ni_api->nal_handle.nal_idx; handle->cookie = md->md_lh.lh_cookie; } -static inline lib_md_t * -ptl_handle2md (ptl_handle_md_t *handle, lib_nal_t *nal) +static inline lnet_libmd_t * +lnet_handle2md(lnet_handle_md_t *handle) { - /* ALWAYS called with liblock held */ - lib_handle_t *lh = lib_lookup_cookie (nal, handle->cookie, - PTL_COOKIE_TYPE_MD); - if (lh == NULL) - return (NULL); + /* ALWAYS called with resource lock held */ + lnet_libhandle_t *lh; + int cpt; - return (lh_entry (lh, lib_md_t, md_lh)); + cpt = lnet_cpt_of_cookie(handle->cookie); + lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt], + handle->cookie); + if (lh == NULL) + return NULL; + + return lh_entry(lh, lnet_libmd_t, md_lh); } -static inline lib_md_t * -ptl_wire_handle2md (ptl_handle_wire_t *wh, lib_nal_t *nal) +static inline lnet_libmd_t * +lnet_wire_handle2md(lnet_handle_wire_t *wh) { - /* ALWAYS called with liblock held */ - lib_handle_t *lh; - - if (wh->wh_interface_cookie != nal->libnal_ni.ni_interface_cookie) - return (NULL); - - lh = lib_lookup_cookie (nal, wh->wh_object_cookie, - PTL_COOKIE_TYPE_MD); - if (lh == NULL) - return (NULL); + /* ALWAYS called with resource lock held */ + lnet_libhandle_t *lh; + int cpt; + + if (wh->wh_interface_cookie != the_lnet.ln_interface_cookie) + return NULL; - return (lh_entry (lh, lib_md_t, md_lh)); + cpt = lnet_cpt_of_cookie(wh->wh_object_cookie); + lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt], + wh->wh_object_cookie); + if (lh == NULL) + return NULL; + + return lh_entry(lh, lnet_libmd_t, md_lh); } static inline void -ptl_me2handle (ptl_handle_me_t *handle, lib_nal_t *nal, lib_me_t *me) +lnet_me2handle (lnet_handle_me_t *handle, lnet_me_t *me) { - handle->nal_idx = nal->libnal_ni.ni_api->nal_handle.nal_idx; handle->cookie = me->me_lh.lh_cookie; } -static inline lib_me_t * -ptl_handle2me (ptl_handle_me_t *handle, lib_nal_t *nal) +static inline lnet_me_t * +lnet_handle2me(lnet_handle_me_t *handle) { - /* ALWAYS called with liblock held */ - lib_handle_t *lh = lib_lookup_cookie (nal, handle->cookie, - PTL_COOKIE_TYPE_ME); - if (lh == NULL) - return (NULL); + /* ALWAYS called with resource lock held */ + lnet_libhandle_t *lh; + int cpt; + + cpt = lnet_cpt_of_cookie(handle->cookie); + lh = lnet_res_lh_lookup(the_lnet.ln_me_containers[cpt], + handle->cookie); + if (lh == NULL) + return NULL; - return (lh_entry (lh, lib_me_t, me_lh)); + return lh_entry(lh, lnet_me_t, me_lh); } -extern int lib_init(lib_nal_t *libnal, nal_t *apinal, - ptl_process_id_t pid, - ptl_ni_limits_t *desired_limits, - ptl_ni_limits_t *actual_limits); -extern int lib_fini(lib_nal_t *libnal); +static inline void +lnet_peer_addref_locked(lnet_peer_t *lp) +{ + LASSERT (lp->lp_refcount > 0); + lp->lp_refcount++; +} -/* - * When the NAL detects an incoming message header, it should call - * lib_parse() decode it. If the message header is garbage, lib_parse() - * returns immediately with failure, otherwise the NAL callbacks will be - * called to receive the message body. They are handed the private cookie - * as a way for the NAL to maintain state about which transaction is being - * processed. An extra parameter, lib_msg contains the lib-level message - * state for passing to lib_finalize() when the message body has been - * received. - */ -extern void lib_enq_event_locked (lib_nal_t *nal, void *private, - lib_eq_t *eq, ptl_event_t *ev); -extern void lib_finalize (lib_nal_t *nal, void *private, lib_msg_t *msg, - ptl_ni_fail_t ni_fail_type); -extern ptl_err_t lib_parse (lib_nal_t *nal, ptl_hdr_t *hdr, void *private); -extern lib_msg_t *lib_create_reply_msg (lib_nal_t *nal, ptl_nid_t peer_nid, - lib_msg_t *get_msg); -extern void print_hdr (lib_nal_t * nal, ptl_hdr_t * hdr); - - -extern ptl_size_t lib_iov_nob (int niov, struct iovec *iov); -extern void lib_copy_iov2buf (char *dest, int niov, struct iovec *iov, - ptl_size_t offset, ptl_size_t len); -extern void lib_copy_buf2iov (int niov, struct iovec *iov, ptl_size_t offset, - char *src, ptl_size_t len); -extern int lib_extract_iov (int dst_niov, struct iovec *dst, - int src_niov, struct iovec *src, - ptl_size_t offset, ptl_size_t len); - -extern ptl_size_t lib_kiov_nob (int niov, ptl_kiov_t *iov); -extern void lib_copy_kiov2buf (char *dest, int niov, ptl_kiov_t *kiov, - ptl_size_t offset, ptl_size_t len); -extern void lib_copy_buf2kiov (int niov, ptl_kiov_t *kiov, ptl_size_t offset, - char *src, ptl_size_t len); -extern int lib_extract_kiov (int dst_niov, ptl_kiov_t *dst, - int src_niov, ptl_kiov_t *src, - ptl_size_t offset, ptl_size_t len); - -extern void lib_assert_wire_constants (void); - -extern ptl_err_t lib_recv (lib_nal_t *nal, void *private, lib_msg_t *msg, lib_md_t *md, - ptl_size_t offset, ptl_size_t mlen, ptl_size_t rlen); -extern ptl_err_t lib_send (lib_nal_t *nal, void *private, lib_msg_t *msg, - ptl_hdr_t *hdr, int type, ptl_nid_t nid, ptl_pid_t pid, - lib_md_t *md, ptl_size_t offset, ptl_size_t len); - -extern int lib_api_ni_status (nal_t *nal, ptl_sr_index_t sr_idx, - ptl_sr_value_t *status); -extern int lib_api_ni_dist (nal_t *nal, ptl_process_id_t *pid, - unsigned long *dist); - -extern int lib_api_eq_alloc (nal_t *nal, ptl_size_t count, - ptl_eq_handler_t callback, - ptl_handle_eq_t *handle); -extern int lib_api_eq_free(nal_t *nal, ptl_handle_eq_t *eqh); -extern int lib_api_eq_poll (nal_t *nal, - ptl_handle_eq_t *eventqs, int neq, int timeout_ms, - ptl_event_t *event, int *which); - -extern int lib_api_me_attach(nal_t *nal, - ptl_pt_index_t portal, - ptl_process_id_t match_id, - ptl_match_bits_t match_bits, - ptl_match_bits_t ignore_bits, - ptl_unlink_t unlink, ptl_ins_pos_t pos, - ptl_handle_me_t *handle); -extern int lib_api_me_insert(nal_t *nal, - ptl_handle_me_t *current_meh, - ptl_process_id_t match_id, - ptl_match_bits_t match_bits, - ptl_match_bits_t ignore_bits, - ptl_unlink_t unlink, ptl_ins_pos_t pos, - ptl_handle_me_t *handle); -extern int lib_api_me_unlink (nal_t *nal, ptl_handle_me_t *meh); -extern void lib_me_unlink(lib_nal_t *nal, lib_me_t *me); - -extern int lib_api_get_id(nal_t *nal, ptl_process_id_t *pid); - -extern void lib_md_unlink(lib_nal_t *nal, lib_md_t *md); -extern void lib_md_deconstruct(lib_nal_t *nal, lib_md_t *lmd, ptl_md_t *umd); -extern int lib_api_md_attach(nal_t *nal, ptl_handle_me_t *meh, - ptl_md_t *umd, ptl_unlink_t unlink, - ptl_handle_md_t *handle); -extern int lib_api_md_bind(nal_t *nal, ptl_md_t *umd, ptl_unlink_t unlink, - ptl_handle_md_t *handle); -extern int lib_api_md_unlink (nal_t *nal, ptl_handle_md_t *mdh); -extern int lib_api_md_update (nal_t *nal, ptl_handle_md_t *mdh, - ptl_md_t *oldumd, ptl_md_t *newumd, - ptl_handle_eq_t *testqh); - -extern int lib_api_get(nal_t *apinal, ptl_handle_md_t *mdh, - ptl_process_id_t *id, - ptl_pt_index_t portal, ptl_ac_index_t ac, - ptl_match_bits_t match_bits, ptl_size_t offset); -extern int lib_api_put(nal_t *apinal, ptl_handle_md_t *mdh, - ptl_ack_req_t ack, ptl_process_id_t *id, - ptl_pt_index_t portal, ptl_ac_index_t ac, - ptl_match_bits_t match_bits, - ptl_size_t offset, ptl_hdr_data_t hdr_data); -extern int lib_api_fail_nid(nal_t *apinal, ptl_nid_t nid, unsigned int threshold); +extern void lnet_destroy_peer_locked(lnet_peer_t *lp); + +static inline void +lnet_peer_decref_locked(lnet_peer_t *lp) +{ + LASSERT (lp->lp_refcount > 0); + lp->lp_refcount--; + if (lp->lp_refcount == 0) + lnet_destroy_peer_locked(lp); +} + +static inline int +lnet_isrouter(lnet_peer_t *lp) +{ + return lp->lp_rtr_refcount != 0; +} + +static inline void +lnet_ni_addref_locked(lnet_ni_t *ni, int cpt) +{ + LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER); + LASSERT(*ni->ni_refs[cpt] >= 0); + + (*ni->ni_refs[cpt])++; +} + +static inline void +lnet_ni_addref(lnet_ni_t *ni) +{ + lnet_net_lock(0); + lnet_ni_addref_locked(ni, 0); + lnet_net_unlock(0); +} + +static inline void +lnet_ni_decref_locked(lnet_ni_t *ni, int cpt) +{ + LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER); + LASSERT(*ni->ni_refs[cpt] > 0); + + (*ni->ni_refs[cpt])--; +} + +static inline void +lnet_ni_decref(lnet_ni_t *ni) +{ + lnet_net_lock(0); + lnet_ni_decref_locked(ni, 0); + lnet_net_unlock(0); +} + +void lnet_ni_free(lnet_ni_t *ni); +lnet_ni_t * +lnet_ni_alloc(__u32 net, struct cfs_expr_list *el, struct list_head *nilist); + +static inline int +lnet_nid2peerhash(lnet_nid_t nid) +{ + return hash_long(nid, LNET_PEER_HASH_BITS); +} + +static inline struct list_head * +lnet_net2rnethash(__u32 net) +{ + return &the_lnet.ln_remote_nets_hash[(LNET_NETNUM(net) + + LNET_NETTYP(net)) & + ((1U << the_lnet.ln_remote_nets_hbits) - 1)]; +} + +extern lnd_t the_lolnd; +extern int avoid_asym_router_failure; + +extern int lnet_cpt_of_nid_locked(lnet_nid_t nid); +extern int lnet_cpt_of_nid(lnet_nid_t nid); +extern lnet_ni_t *lnet_nid2ni_locked(lnet_nid_t nid, int cpt); +extern lnet_ni_t *lnet_net2ni_locked(__u32 net, int cpt); +extern lnet_ni_t *lnet_net2ni(__u32 net); + +int lnet_lib_init(void); +void lnet_lib_exit(void); + +extern int portal_rotor; + +int lnet_notify(lnet_ni_t *ni, lnet_nid_t peer, int alive, cfs_time_t when); +void lnet_notify_locked(lnet_peer_t *lp, int notifylnd, int alive, cfs_time_t when); +int lnet_add_route(__u32 net, __u32 hops, lnet_nid_t gateway_nid, + unsigned int priority); +int lnet_check_routes(void); +int lnet_del_route(__u32 net, lnet_nid_t gw_nid); +void lnet_destroy_routes(void); +int lnet_get_route(int idx, __u32 *net, __u32 *hops, + lnet_nid_t *gateway, __u32 *alive, __u32 *priority); +int lnet_get_net_config(int idx, + __u32 *cpt_count, + __u64 *nid, + int *peer_timeout, + int *peer_tx_credits, + int *peer_rtr_cr, + int *max_tx_credits, + struct lnet_ioctl_net_config *net_config); +int lnet_get_rtr_pool_cfg(int idx, struct lnet_ioctl_pool_cfg *pool_cfg); + +struct libcfs_ioctl_handler { + struct list_head item; + int (*handle_ioctl)(unsigned int cmd, struct libcfs_ioctl_hdr *hdr); +}; + +#define DECLARE_IOCTL_HANDLER(ident, func) \ + static struct libcfs_ioctl_handler ident = { \ + /* .item = */ LIST_HEAD_INIT(ident.item), \ + /* .handle_ioctl = */ func \ + } + +extern int libcfs_register_ioctl(struct libcfs_ioctl_handler *hand); +extern int libcfs_deregister_ioctl(struct libcfs_ioctl_handler *hand); +extern int libcfs_ioctl_getdata(struct libcfs_ioctl_hdr **hdr_pp, + struct libcfs_ioctl_hdr __user *uparam); + +void lnet_proc_init(void); +void lnet_proc_fini(void); +int lnet_rtrpools_alloc(int im_a_router); +void lnet_destroy_rtrbuf(lnet_rtrbuf_t *rb, int npages); +int lnet_rtrpools_adjust(int tiny, int small, int large); +int lnet_rtrpools_enable(void); +void lnet_rtrpools_disable(void); +void lnet_rtrpools_free(int keep_pools); +lnet_remotenet_t *lnet_find_net_locked (__u32 net); +int lnet_dyn_add_ni(lnet_pid_t requested_pid, char *nets, + __s32 peer_timeout, __s32 peer_cr, __s32 peer_buf_cr, + __s32 credits); +int lnet_dyn_del_ni(__u32 net); +int lnet_clear_lazy_portal(struct lnet_ni *ni, int portal, char *reason); + +int lnet_islocalnid(lnet_nid_t nid); +int lnet_islocalnet(__u32 net); + +void lnet_msg_attach_md(lnet_msg_t *msg, lnet_libmd_t *md, + unsigned int offset, unsigned int mlen); +void lnet_msg_detach_md(lnet_msg_t *msg, int status); +void lnet_build_unlink_event(lnet_libmd_t *md, lnet_event_t *ev); +void lnet_build_msg_event(lnet_msg_t *msg, lnet_event_kind_t ev_type); +void lnet_msg_commit(lnet_msg_t *msg, int cpt); +void lnet_msg_decommit(lnet_msg_t *msg, int cpt, int status); + +void lnet_eq_enqueue_event(lnet_eq_t *eq, lnet_event_t *ev); +void lnet_prep_send(lnet_msg_t *msg, int type, lnet_process_id_t target, + unsigned int offset, unsigned int len); +int lnet_send(lnet_nid_t nid, lnet_msg_t *msg, lnet_nid_t rtr_nid); +void lnet_return_tx_credits_locked(lnet_msg_t *msg); +void lnet_return_rx_credits_locked(lnet_msg_t *msg); +void lnet_schedule_blocked_locked(lnet_rtrbufpool_t *rbp); +void lnet_drop_routed_msgs_locked(struct list_head *list, int cpt); + +/* portals functions */ +/* portals attributes */ +static inline int +lnet_ptl_is_lazy(lnet_portal_t *ptl) +{ + return !!(ptl->ptl_options & LNET_PTL_LAZY); +} + +static inline int +lnet_ptl_is_unique(lnet_portal_t *ptl) +{ + return !!(ptl->ptl_options & LNET_PTL_MATCH_UNIQUE); +} + +static inline int +lnet_ptl_is_wildcard(lnet_portal_t *ptl) +{ + return !!(ptl->ptl_options & LNET_PTL_MATCH_WILDCARD); +} + +static inline void +lnet_ptl_setopt(lnet_portal_t *ptl, int opt) +{ + ptl->ptl_options |= opt; +} + +static inline void +lnet_ptl_unsetopt(lnet_portal_t *ptl, int opt) +{ + ptl->ptl_options &= ~opt; +} + +/* match-table functions */ +struct list_head *lnet_mt_match_head(struct lnet_match_table *mtable, + lnet_process_id_t id, __u64 mbits); +struct lnet_match_table *lnet_mt_of_attach(unsigned int index, + lnet_process_id_t id, __u64 mbits, + __u64 ignore_bits, + lnet_ins_pos_t pos); +int lnet_mt_match_md(struct lnet_match_table *mtable, + struct lnet_match_info *info, struct lnet_msg *msg); + +/* portals match/attach functions */ +void lnet_ptl_attach_md(lnet_me_t *me, lnet_libmd_t *md, + struct list_head *matches, struct list_head *drops); +void lnet_ptl_detach_md(lnet_me_t *me, lnet_libmd_t *md); +int lnet_ptl_match_md(struct lnet_match_info *info, struct lnet_msg *msg); + +/* initialized and finalize portals */ +int lnet_portals_create(void); +void lnet_portals_destroy(void); + +/* message functions */ +int lnet_parse (lnet_ni_t *ni, lnet_hdr_t *hdr, + lnet_nid_t fromnid, void *private, int rdma_req); +int lnet_parse_local(lnet_ni_t *ni, lnet_msg_t *msg); +int lnet_parse_forward_locked(lnet_ni_t *ni, lnet_msg_t *msg); + +void lnet_recv(lnet_ni_t *ni, void *private, lnet_msg_t *msg, int delayed, + unsigned int offset, unsigned int mlen, unsigned int rlen); +void lnet_ni_recv(lnet_ni_t *ni, void *private, lnet_msg_t *msg, + int delayed, unsigned int offset, + unsigned int mlen, unsigned int rlen); + +lnet_msg_t *lnet_create_reply_msg (lnet_ni_t *ni, lnet_msg_t *get_msg); +void lnet_set_reply_msg_len(lnet_ni_t *ni, lnet_msg_t *msg, unsigned int len); + +void lnet_finalize(lnet_ni_t *ni, lnet_msg_t *msg, int rc); + +void lnet_drop_message(lnet_ni_t *ni, int cpt, void *private, + unsigned int nob); +void lnet_drop_delayed_msg_list(struct list_head *head, char *reason); +void lnet_recv_delayed_msg_list(struct list_head *head); + +int lnet_msg_container_setup(struct lnet_msg_container *container, int cpt); +void lnet_msg_container_cleanup(struct lnet_msg_container *container); +void lnet_msg_containers_destroy(void); +int lnet_msg_containers_create(void); + +char *lnet_msgtyp2str (int type); +void lnet_print_hdr (lnet_hdr_t * hdr); +int lnet_fail_nid(lnet_nid_t nid, unsigned int threshold); + +/** \addtogroup lnet_fault_simulation @{ */ + +int lnet_fault_ctl(int cmd, struct libcfs_ioctl_data *data); +int lnet_fault_init(void); +void lnet_fault_fini(void); + +bool lnet_drop_rule_match(lnet_hdr_t *hdr); + +int lnet_delay_rule_add(struct lnet_fault_attr *attr); +int lnet_delay_rule_del(lnet_nid_t src, lnet_nid_t dst, bool shutdown); +int lnet_delay_rule_list(int pos, struct lnet_fault_attr *attr, + struct lnet_fault_stat *stat); +void lnet_delay_rule_reset(void); +void lnet_delay_rule_check(void); +bool lnet_delay_rule_match_locked(lnet_hdr_t *hdr, struct lnet_msg *msg); + +/** @} lnet_fault_simulation */ + +void lnet_counters_get(lnet_counters_t *counters); +void lnet_counters_reset(void); + +unsigned int lnet_iov_nob(unsigned int niov, struct kvec *iov); +int lnet_extract_iov(int dst_niov, struct kvec *dst, + int src_niov, struct kvec *src, + unsigned int offset, unsigned int len); + +unsigned int lnet_kiov_nob (unsigned int niov, lnet_kiov_t *iov); +int lnet_extract_kiov(int dst_niov, lnet_kiov_t *dst, + int src_niov, lnet_kiov_t *src, + unsigned int offset, unsigned int len); + +void lnet_copy_iov2iov(unsigned int ndiov, struct kvec *diov, + unsigned int doffset, + unsigned int nsiov, struct kvec *siov, + unsigned int soffset, unsigned int nob); +void lnet_copy_kiov2iov(unsigned int niov, struct kvec *iov, + unsigned int iovoffset, + unsigned int nkiov, lnet_kiov_t *kiov, + unsigned int kiovoffset, unsigned int nob); +void lnet_copy_iov2kiov(unsigned int nkiov, lnet_kiov_t *kiov, + unsigned int kiovoffset, + unsigned int niov, struct kvec *iov, + unsigned int iovoffset, unsigned int nob); +void lnet_copy_kiov2kiov(unsigned int ndkiov, lnet_kiov_t *dkiov, + unsigned int doffset, + unsigned int nskiov, lnet_kiov_t *skiov, + unsigned int soffset, unsigned int nob); + +static inline void +lnet_copy_iov2flat(int dlen, __user void *dest, unsigned int doffset, + unsigned int nsiov, struct kvec *siov, unsigned int soffset, + unsigned int nob) +{ + struct kvec diov = {/*.iov_base = */ dest, /*.iov_len = */ dlen}; + + lnet_copy_iov2iov(1, &diov, doffset, + nsiov, siov, soffset, nob); +} + +static inline void +lnet_copy_kiov2flat(int dlen, void __user *dest, unsigned int doffset, + unsigned int nsiov, lnet_kiov_t *skiov, + unsigned int soffset, unsigned int nob) +{ + struct kvec diov = {/* .iov_base = */ dest, /* .iov_len = */ dlen}; + + lnet_copy_kiov2iov(1, &diov, doffset, + nsiov, skiov, soffset, nob); +} + +static inline void +lnet_copy_flat2iov(unsigned int ndiov, struct kvec *diov, unsigned int doffset, + int slen, void __user *src, unsigned int soffset, + unsigned int nob) +{ + struct kvec siov = {/*.iov_base = */ src, /*.iov_len = */slen}; + lnet_copy_iov2iov(ndiov, diov, doffset, + 1, &siov, soffset, nob); +} + +static inline void +lnet_copy_flat2kiov(unsigned int ndiov, lnet_kiov_t *dkiov, + unsigned int doffset, int slen, void __user *src, + unsigned int soffset, unsigned int nob) +{ + struct kvec siov = {/* .iov_base = */ src, /* .iov_len = */ slen}; + lnet_copy_iov2kiov(ndiov, dkiov, doffset, + 1, &siov, soffset, nob); +} + +void lnet_me_unlink(lnet_me_t *me); + +void lnet_md_unlink(lnet_libmd_t *md); +void lnet_md_deconstruct(lnet_libmd_t *lmd, lnet_md_t *umd); + +void lnet_register_lnd(lnd_t *lnd); +void lnet_unregister_lnd(lnd_t *lnd); + +int lnet_connect(struct socket **sockp, lnet_nid_t peer_nid, + __u32 local_ip, __u32 peer_ip, int peer_port); +void lnet_connect_console_error(int rc, lnet_nid_t peer_nid, + __u32 peer_ip, int port); +int lnet_count_acceptor_nis(void); +int lnet_acceptor_timeout(void); +int lnet_acceptor_port(void); +int lnet_acceptor_start(void); +void lnet_acceptor_stop(void); + +int lnet_ipif_query(char *name, int *up, __u32 *ip, __u32 *mask); +int lnet_ipif_enumerate(char ***names); +void lnet_ipif_free_enumeration(char **names, int n); +int lnet_sock_setbuf(struct socket *socket, int txbufsize, int rxbufsize); +int lnet_sock_getbuf(struct socket *socket, int *txbufsize, int *rxbufsize); +int lnet_sock_getaddr(struct socket *socket, bool remote, __u32 *ip, int *port); +int lnet_sock_write(struct socket *sock, void *buffer, int nob, int timeout); +int lnet_sock_read(struct socket *sock, void *buffer, int nob, int timeout); + +int lnet_sock_listen(struct socket **sockp, __u32 ip, int port, int backlog); +int lnet_sock_accept(struct socket **newsockp, struct socket *sock); +int lnet_sock_connect(struct socket **sockp, int *fatal, + __u32 local_ip, int local_port, + __u32 peer_ip, int peer_port); + +int lnet_peers_start_down(void); +int lnet_peer_buffer_credits(lnet_ni_t *ni); + +int lnet_router_checker_start(void); +void lnet_router_checker_stop(void); +void lnet_router_ni_update_locked(lnet_peer_t *gw, __u32 net); +void lnet_swap_pinginfo(lnet_ping_info_t *info); + +int lnet_parse_ip2nets(char **networksp, char *ip2nets); +int lnet_parse_routes(char *route_str, int *im_a_router); +int lnet_parse_networks(struct list_head *nilist, char *networks); +int lnet_net_unique(__u32 net, struct list_head *nilist); + +int lnet_nid2peer_locked(lnet_peer_t **lpp, lnet_nid_t nid, int cpt); +lnet_peer_t *lnet_find_peer_locked(struct lnet_peer_table *ptable, + lnet_nid_t nid); +void lnet_peer_tables_cleanup(lnet_ni_t *ni); +void lnet_peer_tables_destroy(void); +int lnet_peer_tables_create(void); +void lnet_debug_peer(lnet_nid_t nid); +int lnet_get_peer_info(__u32 peer_index, __u64 *nid, + char alivness[LNET_MAX_STR_LEN], + __u32 *cpt_iter, __u32 *refcount, + __u32 *ni_peer_tx_credits, __u32 *peer_tx_credits, + __u32 *peer_rtr_credits, __u32 *peer_min_rtr_credtis, + __u32 *peer_tx_qnob); + +static inline void +lnet_peer_set_alive(lnet_peer_t *lp) +{ + lp->lp_last_alive = lp->lp_last_query = cfs_time_current(); + if (!lp->lp_alive) + lnet_notify_locked(lp, 0, 1, lp->lp_last_alive); +} #endif