diff options
Diffstat (limited to 'drivers/staging/lustre/include/linux/lnet/lib-lnet.h')
| -rw-r--r-- | drivers/staging/lustre/include/linux/lnet/lib-lnet.h | 644 |
1 files changed, 0 insertions, 644 deletions
diff --git a/drivers/staging/lustre/include/linux/lnet/lib-lnet.h b/drivers/staging/lustre/include/linux/lnet/lib-lnet.h deleted file mode 100644 index df4c72507a15..000000000000 --- a/drivers/staging/lustre/include/linux/lnet/lib-lnet.h +++ /dev/null @@ -1,644 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * GPL HEADER START - * - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 only, - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License version 2 for more details (a copy is included - * in the LICENSE file that accompanied this code). - * - * You should have received a copy of the GNU General Public License - * version 2 along with this program; If not, see - * http://www.gnu.org/licenses/gpl-2.0.html - * - * GPL HEADER END - */ -/* - * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. - * Use is subject to license terms. - * - * Copyright (c) 2012, 2015, Intel Corporation. - */ -/* - * This file is part of Lustre, http://www.lustre.org/ - * Lustre is a trademark of Seagate, Inc. - * - * lnet/include/lnet/lib-lnet.h - */ - -#ifndef __LNET_LIB_LNET_H__ -#define __LNET_LIB_LNET_H__ - -#include <linux/libcfs/libcfs.h> -#include <linux/lnet/api.h> -#include <linux/lnet/lib-types.h> -#include <uapi/linux/lnet/lnet-dlc.h> -#include <uapi/linux/lnet/lnet-types.h> -#include <uapi/linux/lnet/lnetctl.h> -#include <uapi/linux/lnet/nidstr.h> - -extern struct lnet the_lnet; /* THE network */ - -#if (BITS_PER_LONG == 32) -/* 2 CPTs, allowing more CPTs might make us under memory pressure */ -#define LNET_CPT_MAX_BITS 1 - -#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 */ - -/* max allowed CPT number */ -#define LNET_CPT_MAX (1 << LNET_CPT_MAX_BITS) - -#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(struct lnet_route *route) -{ - /* gateway is down */ - if (!route->lr_gateway->lp_alive) - return 0; - /* no NI status, assume it's alive */ - if ((route->lr_gateway->lp_ping_feats & - LNET_PING_FEAT_NI_STATUS) == 0) - return 1; - /* has NI status, check # down NIs */ - return route->lr_downis == 0; -} - -static inline int lnet_is_wire_handle_none(struct lnet_handle_wire *wh) -{ - return (wh->wh_interface_cookie == LNET_WIRE_HANDLE_COOKIE_NONE && - wh->wh_object_cookie == LNET_WIRE_HANDLE_COOKIE_NONE); -} - -static inline int lnet_md_exhausted(struct lnet_libmd *md) -{ - return (!md->md_threshold || - ((md->md_options & LNET_MD_MAX_SIZE) && - md->md_offset + md->md_max_size > md->md_length)); -} - -static inline int lnet_md_unlinkable(struct lnet_libmd *md) -{ - /* - * 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) - return 0; - - if (md->md_flags & LNET_MD_FLAG_ZOMBIE) - return 1; - - return ((md->md_flags & LNET_MD_FLAG_AUTO_UNLINK) && - 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 int -lnet_cpt_of_cookie(__u64 cookie) -{ - unsigned int cpt = (cookie >> LNET_COOKIE_TYPE_BITS) & LNET_CPT_MASK; - - /* - * 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 -lnet_res_lock(int cpt) -{ - cfs_percpt_lock(the_lnet.ln_res_lock, cpt); -} - -static inline void -lnet_res_unlock(int cpt) -{ - cfs_percpt_unlock(the_lnet.ln_res_lock, cpt); -} - -static inline int -lnet_res_lock_current(void) -{ - int cpt = lnet_cpt_current(); - - lnet_res_lock(cpt); - return cpt; -} - -static inline void -lnet_net_lock(int cpt) -{ - cfs_percpt_lock(the_lnet.ln_net_lock, cpt); -} - -static inline void -lnet_net_unlock(int cpt) -{ - cfs_percpt_unlock(the_lnet.ln_net_lock, cpt); -} - -static inline int -lnet_net_lock_current(void) -{ - int cpt = lnet_cpt_current(); - - lnet_net_lock(cpt); - return cpt; -} - -#define LNET_LOCK() lnet_net_lock(LNET_LOCK_EX) -#define LNET_UNLOCK() lnet_net_unlock(LNET_LOCK_EX) - -#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 MAX_PORTALS 64 - -static inline struct lnet_libmd * -lnet_md_alloc(struct lnet_md *umd) -{ - struct lnet_libmd *md; - unsigned int size; - unsigned int niov; - - if (umd->options & LNET_MD_KIOV) { - niov = umd->length; - size = offsetof(struct lnet_libmd, md_iov.kiov[niov]); - } else { - niov = umd->options & LNET_MD_IOVEC ? umd->length : 1; - size = offsetof(struct lnet_libmd, md_iov.iov[niov]); - } - - md = kzalloc(size, GFP_NOFS); - - if (md) { - /* Set here in case of early free */ - md->md_options = umd->options; - md->md_niov = niov; - INIT_LIST_HEAD(&md->md_list); - } - - return md; -} - -struct lnet_libhandle *lnet_res_lh_lookup(struct lnet_res_container *rec, - __u64 cookie); -void lnet_res_lh_initialize(struct lnet_res_container *rec, - struct lnet_libhandle *lh); -static inline void -lnet_res_lh_invalidate(struct lnet_libhandle *lh) -{ - /* NB: cookie is still useful, don't reset it */ - list_del(&lh->lh_hash_chain); -} - -static inline void -lnet_eq2handle(struct lnet_handle_eq *handle, struct lnet_eq *eq) -{ - if (!eq) { - LNetInvalidateEQHandle(handle); - return; - } - - handle->cookie = eq->eq_lh.lh_cookie; -} - -static inline struct lnet_eq * -lnet_handle2eq(struct lnet_handle_eq *handle) -{ - struct lnet_libhandle *lh; - - lh = lnet_res_lh_lookup(&the_lnet.ln_eq_container, handle->cookie); - if (!lh) - return NULL; - - return lh_entry(lh, struct lnet_eq, eq_lh); -} - -static inline void -lnet_md2handle(struct lnet_handle_md *handle, struct lnet_libmd *md) -{ - handle->cookie = md->md_lh.lh_cookie; -} - -static inline struct lnet_libmd * -lnet_handle2md(struct lnet_handle_md *handle) -{ - /* ALWAYS called with resource lock held */ - struct lnet_libhandle *lh; - int cpt; - - cpt = lnet_cpt_of_cookie(handle->cookie); - lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt], - handle->cookie); - if (!lh) - return NULL; - - return lh_entry(lh, struct lnet_libmd, md_lh); -} - -static inline struct lnet_libmd * -lnet_wire_handle2md(struct lnet_handle_wire *wh) -{ - /* ALWAYS called with resource lock held */ - struct lnet_libhandle *lh; - int cpt; - - if (wh->wh_interface_cookie != the_lnet.ln_interface_cookie) - return NULL; - - 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) - return NULL; - - return lh_entry(lh, struct lnet_libmd, md_lh); -} - -static inline void -lnet_me2handle(struct lnet_handle_me *handle, struct lnet_me *me) -{ - handle->cookie = me->me_lh.lh_cookie; -} - -static inline struct lnet_me * -lnet_handle2me(struct lnet_handle_me *handle) -{ - /* ALWAYS called with resource lock held */ - struct lnet_libhandle *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) - return NULL; - - return lh_entry(lh, struct lnet_me, me_lh); -} - -static inline void -lnet_peer_addref_locked(struct lnet_peer *lp) -{ - LASSERT(lp->lp_refcount > 0); - lp->lp_refcount++; -} - -void lnet_destroy_peer_locked(struct lnet_peer *lp); - -static inline void -lnet_peer_decref_locked(struct lnet_peer *lp) -{ - LASSERT(lp->lp_refcount > 0); - lp->lp_refcount--; - if (!lp->lp_refcount) - lnet_destroy_peer_locked(lp); -} - -static inline int -lnet_isrouter(struct lnet_peer *lp) -{ - return lp->lp_rtr_refcount ? 1 : 0; -} - -static inline void -lnet_ni_addref_locked(struct lnet_ni *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(struct lnet_ni *ni) -{ - lnet_net_lock(0); - lnet_ni_addref_locked(ni, 0); - lnet_net_unlock(0); -} - -static inline void -lnet_ni_decref_locked(struct lnet_ni *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(struct lnet_ni *ni) -{ - lnet_net_lock(0); - lnet_ni_decref_locked(ni, 0); - lnet_net_unlock(0); -} - -void lnet_ni_free(struct lnet_ni *ni); -struct lnet_ni * -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 struct lnet_lnd the_lolnd; -extern int avoid_asym_router_failure; - -int lnet_cpt_of_nid_locked(lnet_nid_t nid); -int lnet_cpt_of_nid(lnet_nid_t nid); -struct lnet_ni *lnet_nid2ni_locked(lnet_nid_t nid, int cpt); -struct lnet_ni *lnet_net2ni_locked(__u32 net, int cpt); -struct lnet_ni *lnet_net2ni(__u32 net); - -extern int portal_rotor; - -int lnet_lib_init(void); -void lnet_lib_exit(void); - -int lnet_notify(struct lnet_ni *ni, lnet_nid_t peer, int alive, - unsigned long when); -void lnet_notify_locked(struct lnet_peer *lp, int notifylnd, int alive, - unsigned long 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_rtr_pool_cfg(int idx, struct lnet_ioctl_pool_cfg *pool_cfg); - -void lnet_router_debugfs_init(void); -void lnet_router_debugfs_fini(void); -int lnet_rtrpools_alloc(int im_a_router); -void lnet_destroy_rtrbuf(struct lnet_rtrbuf *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); -struct lnet_remotenet *lnet_find_net_locked(__u32 net); -int lnet_dyn_add_ni(lnet_pid_t requested_pid, - struct lnet_ioctl_config_data *conf); -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(struct lnet_msg *msg, struct lnet_libmd *md, - unsigned int offset, unsigned int mlen); -void lnet_msg_detach_md(struct lnet_msg *msg, int status); -void lnet_build_unlink_event(struct lnet_libmd *md, struct lnet_event *ev); -void lnet_build_msg_event(struct lnet_msg *msg, enum lnet_event_kind ev_type); -void lnet_msg_commit(struct lnet_msg *msg, int cpt); -void lnet_msg_decommit(struct lnet_msg *msg, int cpt, int status); - -void lnet_eq_enqueue_event(struct lnet_eq *eq, struct lnet_event *ev); -void lnet_prep_send(struct lnet_msg *msg, int type, - struct lnet_process_id target, unsigned int offset, - unsigned int len); -int lnet_send(lnet_nid_t nid, struct lnet_msg *msg, lnet_nid_t rtr_nid); -void lnet_return_tx_credits_locked(struct lnet_msg *msg); -void lnet_return_rx_credits_locked(struct lnet_msg *msg); -void lnet_schedule_blocked_locked(struct lnet_rtrbufpool *rbp); -void lnet_drop_routed_msgs_locked(struct list_head *list, int cpt); - -/* portals functions */ -/* portals attributes */ -static inline int -lnet_ptl_is_lazy(struct lnet_portal *ptl) -{ - return !!(ptl->ptl_options & LNET_PTL_LAZY); -} - -static inline int -lnet_ptl_is_unique(struct lnet_portal *ptl) -{ - return !!(ptl->ptl_options & LNET_PTL_MATCH_UNIQUE); -} - -static inline int -lnet_ptl_is_wildcard(struct lnet_portal *ptl) -{ - return !!(ptl->ptl_options & LNET_PTL_MATCH_WILDCARD); -} - -static inline void -lnet_ptl_setopt(struct lnet_portal *ptl, int opt) -{ - ptl->ptl_options |= opt; -} - -static inline void -lnet_ptl_unsetopt(struct lnet_portal *ptl, int opt) -{ - ptl->ptl_options &= ~opt; -} - -/* match-table functions */ -struct list_head *lnet_mt_match_head(struct lnet_match_table *mtable, - struct lnet_process_id id, __u64 mbits); -struct lnet_match_table *lnet_mt_of_attach(unsigned int index, - struct lnet_process_id id, - __u64 mbits, __u64 ignore_bits, - enum lnet_ins_pos 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(struct lnet_me *me, struct lnet_libmd *md, - struct list_head *matches, struct list_head *drops); -void lnet_ptl_detach_md(struct lnet_me *me, struct lnet_libmd *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(struct lnet_ni *ni, struct lnet_hdr *hdr, - lnet_nid_t fromnid, void *private, int rdma_req); -int lnet_parse_local(struct lnet_ni *ni, struct lnet_msg *msg); -int lnet_parse_forward_locked(struct lnet_ni *ni, struct lnet_msg *msg); - -void lnet_recv(struct lnet_ni *ni, void *private, struct lnet_msg *msg, - int delayed, unsigned int offset, unsigned int mlen, - unsigned int rlen); -void lnet_ni_recv(struct lnet_ni *ni, void *private, struct lnet_msg *msg, - int delayed, unsigned int offset, - unsigned int mlen, unsigned int rlen); - -struct lnet_msg *lnet_create_reply_msg(struct lnet_ni *ni, - struct lnet_msg *get_msg); -void lnet_set_reply_msg_len(struct lnet_ni *ni, struct lnet_msg *msg, - unsigned int len); - -void lnet_finalize(struct lnet_ni *ni, struct lnet_msg *msg, int rc); - -void lnet_drop_message(struct lnet_ni *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(struct lnet_hdr *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(struct lnet_hdr *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(struct lnet_hdr *hdr, struct lnet_msg *msg); - -/** @} lnet_fault_simulation */ - -void lnet_counters_get(struct lnet_counters *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, const struct kvec *src, - unsigned int offset, unsigned int len); - -unsigned int lnet_kiov_nob(unsigned int niov, struct bio_vec *iov); -int lnet_extract_kiov(int dst_niov, struct bio_vec *dst, - int src_niov, const struct bio_vec *src, - unsigned int offset, unsigned int len); - -void lnet_copy_iov2iter(struct iov_iter *to, - unsigned int nsiov, const struct kvec *siov, - unsigned int soffset, unsigned int nob); -void lnet_copy_kiov2iter(struct iov_iter *to, - unsigned int nkiov, const struct bio_vec *kiov, - unsigned int kiovoffset, unsigned int nob); - -void lnet_me_unlink(struct lnet_me *me); - -void lnet_md_unlink(struct lnet_libmd *md); -void lnet_md_deconstruct(struct lnet_libmd *lmd, struct lnet_md *umd); - -void lnet_register_lnd(struct lnet_lnd *lnd); -void lnet_unregister_lnd(struct lnet_lnd *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_count_acceptor_nis(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); -void libcfs_sock_release(struct socket *sock); - -int lnet_peers_start_down(void); -int lnet_peer_buffer_credits(struct lnet_ni *ni); - -int lnet_router_checker_start(void); -void lnet_router_checker_stop(void); -void lnet_router_ni_update_locked(struct lnet_peer *gw, __u32 net); -void lnet_swap_pinginfo(struct lnet_ping_info *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(struct lnet_peer **lpp, lnet_nid_t nid, int cpt); -struct lnet_peer *lnet_find_peer_locked(struct lnet_peer_table *ptable, - lnet_nid_t nid); -void lnet_peer_tables_cleanup(struct lnet_ni *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(struct lnet_peer *lp) -{ - lp->lp_last_query = jiffies; - lp->lp_last_alive = jiffies; - if (!lp->lp_alive) - lnet_notify_locked(lp, 0, 1, lp->lp_last_alive); -} - -#endif |