* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2012, 2016, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#ifndef __LNET_LIB_LNET_H__
#define __LNET_LIB_LNET_H__
+/* LNET has 0xeXXX */
+#define CFS_FAIL_PTLRPC_OST_BULK_CB2 0xe000
+
#ifndef __KERNEL__
# error This include is only for kernel use.
#endif
#include <libcfs/libcfs.h>
#include <lnet/api.h>
-#include <lnet/lnet.h>
#include <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 */
/** exclusive lock */
#define LNET_LOCK_EX CFS_PERCPT_LOCK_EX
-static inline int lnet_is_route_alive(struct lnet_route *route)
-{
- if (!route->lr_gateway->lpni_alive)
- return 0; /* gateway is down */
- if ((route->lr_gateway->lpni_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;
-}
+/* default timeout */
+#define DEFAULT_PEER_TIMEOUT 180
+#define LNET_LND_DEFAULT_TIMEOUT 5
+
+#ifdef HAVE_KERN_SOCK_GETNAME_2ARGS
+#define lnet_kernel_getpeername(sock, addr, addrlen) \
+ kernel_getpeername(sock, addr)
+#define lnet_kernel_getsockname(sock, addr, addrlen) \
+ kernel_getsockname(sock, addr)
+#else
+#define lnet_kernel_getpeername(sock, addr, addrlen) \
+ kernel_getpeername(sock, addr, addrlen)
+#define lnet_kernel_getsockname(sock, addr, addrlen) \
+ kernel_getsockname(sock, addr, addrlen)
+#endif
+
+bool lnet_is_route_alive(struct lnet_route *route);
+bool lnet_is_gateway_alive(struct lnet_peer *gw);
static inline int lnet_is_wire_handle_none(struct lnet_handle_wire *wh)
{
}
static inline void
+lnet_peer_net_addref_locked(struct lnet_peer_net *lpn)
+{
+ atomic_inc(&lpn->lpn_refcount);
+}
+
+extern void lnet_destroy_peer_net_locked(struct lnet_peer_net *lpn);
+
+static inline void
+lnet_peer_net_decref_locked(struct lnet_peer_net *lpn)
+{
+ if (atomic_dec_and_test(&lpn->lpn_refcount))
+ lnet_destroy_peer_net_locked(lpn);
+}
+
+static inline void
+lnet_peer_addref_locked(struct lnet_peer *lp)
+{
+ atomic_inc(&lp->lp_refcount);
+}
+
+extern void lnet_destroy_peer_locked(struct lnet_peer *lp);
+
+static inline void
+lnet_peer_decref_locked(struct lnet_peer *lp)
+{
+ if (atomic_dec_and_test(&lp->lp_refcount))
+ lnet_destroy_peer_locked(lp);
+}
+
+static inline void
lnet_peer_ni_addref_locked(struct lnet_peer_ni *lp)
{
- LASSERT (atomic_read(&lp->lpni_refcount) > 0);
+ LASSERT(atomic_read(&lp->lpni_refcount) > 0);
atomic_inc(&lp->lpni_refcount);
}
static inline void
lnet_peer_ni_decref_locked(struct lnet_peer_ni *lp)
{
- LASSERT (atomic_read(&lp->lpni_refcount) > 0);
- atomic_dec(&lp->lpni_refcount);
- if (atomic_read(&lp->lpni_refcount) == 0)
+ LASSERT(atomic_read(&lp->lpni_refcount) > 0);
+ if (atomic_dec_and_test(&lp->lpni_refcount))
lnet_destroy_peer_ni_locked(lp);
}
static inline int
-lnet_isrouter(struct lnet_peer_ni *lp)
+lnet_isrouter(struct lnet_peer_ni *lpni)
{
- return lp->lpni_rtr_refcount != 0;
+ return lpni->lpni_peer_net->lpn_peer->lp_rtr_refcount != 0;
}
static inline void
LIBCFS_FREE(msg, sizeof(*msg));
}
+static inline struct lnet_rsp_tracker *
+lnet_rspt_alloc(int cpt)
+{
+ struct lnet_rsp_tracker *rspt;
+ LIBCFS_ALLOC(rspt, sizeof(*rspt));
+ lnet_net_lock(cpt);
+ the_lnet.ln_counters[cpt]->lct_health.lch_rst_alloc++;
+ lnet_net_unlock(cpt);
+ return rspt;
+}
+
+static inline void
+lnet_rspt_free(struct lnet_rsp_tracker *rspt, int cpt)
+{
+ LIBCFS_FREE(rspt, sizeof(*rspt));
+ lnet_net_lock(cpt);
+ the_lnet.ln_counters[cpt]->lct_health.lch_rst_alloc--;
+ lnet_net_unlock(cpt);
+}
+
void lnet_ni_free(struct lnet_ni *ni);
void lnet_net_free(struct lnet_net *net);
extern struct lnet_ni *lnet_nid2ni_addref(lnet_nid_t nid);
extern struct lnet_ni *lnet_net2ni_locked(__u32 net, int cpt);
extern struct lnet_ni *lnet_net2ni_addref(__u32 net);
-bool lnet_is_ni_healthy_locked(struct lnet_ni *ni);
struct lnet_net *lnet_get_net_locked(__u32 net_id);
int lnet_lib_init(void);
void lnet_lib_exit(void);
+extern unsigned lnet_transaction_timeout;
+extern unsigned lnet_retry_count;
extern unsigned int lnet_numa_range;
+extern unsigned int lnet_health_sensitivity;
+extern unsigned int lnet_recovery_interval;
+extern unsigned int lnet_peer_discovery_disabled;
+extern unsigned int lnet_drop_asym_route;
+extern unsigned int router_sensitivity_percentage;
extern int portal_rotor;
+void lnet_mt_event_handler(struct lnet_event *event);
+
int lnet_notify(struct lnet_ni *ni, lnet_nid_t peer, int alive,
- cfs_time_t when);
+ time64_t when);
void lnet_notify_locked(struct lnet_peer_ni *lp, int notifylnd, int alive,
- cfs_time_t when);
+ time64_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,
struct lnet_ni *prev);
struct lnet_ni *lnet_get_ni_idx_locked(int idx);
-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);
+extern int lnet_get_peer_list(__u32 *countp, __u32 *sizep,
+ struct lnet_process_id __user *ids);
+extern void lnet_peer_ni_set_healthv(lnet_nid_t nid, int value, bool all);
+extern void lnet_peer_ni_add_to_recoveryq_locked(struct lnet_peer_ni *lpni);
-void lnet_proc_init(void);
-void lnet_proc_fini(void);
+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);
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);
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);
+int lnet_send_ping(lnet_nid_t dest_nid, struct lnet_handle_md *mdh, int nnis,
+ void *user_ptr, struct lnet_handle_eq eqh, bool recovery);
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);
struct lnet_msg *get_msg);
void lnet_set_reply_msg_len(struct lnet_ni *ni, struct lnet_msg *msg,
unsigned int len);
+void lnet_detach_rsp_tracker(struct lnet_libmd *md, int cpt);
void lnet_finalize(struct lnet_msg *msg, int rc);
+bool lnet_send_error_simulation(struct lnet_msg *msg,
+ enum lnet_msg_hstatus *hstatus);
+void lnet_handle_remote_failure_locked(struct lnet_peer_ni *lpni);
void lnet_drop_message(struct lnet_ni *ni, int cpt, void *private,
- unsigned int nob);
+ unsigned int nob, __u32 msg_type);
void lnet_drop_delayed_msg_list(struct list_head *head, char *reason);
void lnet_recv_delayed_msg_list(struct list_head *head);
void lnet_msg_containers_destroy(void);
int lnet_msg_containers_create(void);
+char *lnet_health_error2str(enum lnet_msg_hstatus hstatus);
char *lnet_msgtyp2str(int type);
void lnet_print_hdr(struct lnet_hdr *hdr);
int lnet_fail_nid(lnet_nid_t nid, unsigned int threshold);
int lnet_fault_init(void);
void lnet_fault_fini(void);
-bool lnet_drop_rule_match(struct lnet_hdr *hdr);
+bool lnet_drop_rule_match(struct lnet_hdr *hdr, enum lnet_msg_hstatus *hstatus);
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);
/** @} lnet_fault_simulation */
+void lnet_counters_get_common(struct lnet_counters_common *common);
void lnet_counters_get(struct lnet_counters *counters);
void lnet_counters_reset(void);
struct page *lnet_kvaddr_to_page(unsigned long vaddr);
int lnet_cpt_of_md(struct lnet_libmd *md, unsigned int offset);
+unsigned int lnet_get_lnd_timeout(void);
void lnet_register_lnd(struct lnet_lnd *lnd);
void lnet_unregister_lnd(struct lnet_lnd *lnd);
int lnet_peers_start_down(void);
int lnet_peer_buffer_credits(struct lnet_net *net);
-int lnet_router_checker_start(void);
-void lnet_router_checker_stop(void);
-void lnet_router_ni_update_locked(struct lnet_peer_ni *gw, __u32 net);
-void lnet_swap_pinginfo(struct lnet_ping_info *info);
+int lnet_monitor_thr_start(void);
+void lnet_monitor_thr_stop(void);
+
+bool lnet_router_checker_active(void);
+void lnet_check_routers(void);
+void lnet_router_post_mt_start(void);
+void lnet_swap_pinginfo(struct lnet_ping_buffer *pbuf);
+
+int lnet_ping_info_validate(struct lnet_ping_info *pinfo);
+struct lnet_ping_buffer *lnet_ping_buffer_alloc(int nnis, gfp_t gfp);
+void lnet_ping_buffer_free(struct lnet_ping_buffer *pbuf);
+
+static inline void lnet_ping_buffer_addref(struct lnet_ping_buffer *pbuf)
+{
+ atomic_inc(&pbuf->pb_refcnt);
+}
+
+static inline void lnet_ping_buffer_decref(struct lnet_ping_buffer *pbuf)
+{
+ if (atomic_dec_and_test(&pbuf->pb_refcnt))
+ lnet_ping_buffer_free(pbuf);
+}
+
+static inline int lnet_ping_buffer_numref(struct lnet_ping_buffer *pbuf)
+{
+ return atomic_read(&pbuf->pb_refcnt);
+}
+
+static inline int lnet_push_target_resize_needed(void)
+{
+ return the_lnet.ln_push_target->pb_nnis < the_lnet.ln_push_target_nnis;
+}
+
+int lnet_push_target_resize(void);
+void lnet_peer_push_event(struct lnet_event *ev);
int lnet_parse_ip2nets(char **networksp, char *ip2nets);
int lnet_parse_routes(char *route_str, int *im_a_router);
struct lnet_peer_ni *lnet_get_next_peer_ni_locked(struct lnet_peer *peer,
struct lnet_peer_net *peer_net,
struct lnet_peer_ni *prev);
-struct lnet_peer *lnet_find_or_create_peer_locked(lnet_nid_t dst_nid, int cpt);
-struct lnet_peer_ni *lnet_nid2peerni_locked(lnet_nid_t nid, int cpt);
+struct lnet_peer_ni *lnet_nid2peerni_locked(lnet_nid_t nid, lnet_nid_t pref,
+ int cpt);
struct lnet_peer_ni *lnet_nid2peerni_ex(lnet_nid_t nid, int cpt);
struct lnet_peer_ni *lnet_find_peer_ni_locked(lnet_nid_t nid);
+struct lnet_peer *lnet_find_peer(lnet_nid_t nid);
void lnet_peer_net_added(struct lnet_net *net);
lnet_nid_t lnet_peer_primary_nid_locked(lnet_nid_t nid);
+int lnet_discover_peer_locked(struct lnet_peer_ni *lpni, int cpt, bool block);
+int lnet_peer_discovery_start(void);
+void lnet_peer_discovery_stop(void);
+void lnet_push_update_to_peers(int force);
void lnet_peer_tables_cleanup(struct lnet_net *net);
void lnet_peer_uninit(void);
int lnet_peer_tables_create(void);
void lnet_debug_peer(lnet_nid_t nid);
struct lnet_peer_net *lnet_peer_get_net_locked(struct lnet_peer *peer,
__u32 net_id);
-bool lnet_peer_is_ni_pref_locked(struct lnet_peer_ni *lpni,
- struct lnet_ni *ni);
-int lnet_add_peer_ni_to_peer(lnet_nid_t key_nid, lnet_nid_t nid, bool mr);
-int lnet_del_peer_ni_from_peer(lnet_nid_t key_nid, lnet_nid_t nid);
-int lnet_get_peer_info(__u32 idx, lnet_nid_t *primary_nid, lnet_nid_t *nid,
- bool *mr,
- struct lnet_peer_ni_credit_info __user *peer_ni_info,
- struct lnet_ioctl_element_stats __user *peer_ni_stats);
+bool lnet_peer_is_pref_nid_locked(struct lnet_peer_ni *lpni, lnet_nid_t nid);
+int lnet_peer_ni_set_non_mr_pref_nid(struct lnet_peer_ni *lpni, lnet_nid_t nid);
+int lnet_add_peer_ni(lnet_nid_t key_nid, lnet_nid_t nid, bool mr);
+int lnet_del_peer_ni(lnet_nid_t key_nid, lnet_nid_t nid);
+int lnet_get_peer_info(struct lnet_ioctl_peer_cfg *cfg, void __user *bulk);
int lnet_get_peer_ni_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);
+int lnet_get_peer_ni_hstats(struct lnet_ioctl_peer_ni_hstats *stats);
-
-static inline __u32
-lnet_get_num_peer_nis(struct lnet_peer *peer)
+static inline struct lnet_peer_net *
+lnet_find_peer_net_locked(struct lnet_peer *peer, __u32 net_id)
{
- struct lnet_peer_net *lpn;
- struct lnet_peer_ni *lpni;
- __u32 count = 0;
+ struct lnet_peer_net *peer_net;
- list_for_each_entry(lpn, &peer->lp_peer_nets, lpn_on_peer_list)
- list_for_each_entry(lpni, &lpn->lpn_peer_nis,
- lpni_on_peer_net_list)
- count++;
+ list_for_each_entry(peer_net, &peer->lp_peer_nets, lpn_peer_nets) {
+ if (peer_net->lpn_net_id == net_id)
+ return peer_net;
+ }
- return count;
+ return NULL;
}
static inline bool
-lnet_is_peer_ni_healthy_locked(struct lnet_peer_ni *lpni)
+lnet_peer_is_multi_rail(struct lnet_peer *lp)
{
- return lpni->lpni_healthy;
+ if (lp->lp_state & LNET_PEER_MULTI_RAIL)
+ return true;
+ return false;
}
-static inline void
-lnet_set_peer_ni_health_locked(struct lnet_peer_ni *lpni, bool health)
+static inline bool
+lnet_peer_ni_is_configured(struct lnet_peer_ni *lpni)
{
- lpni->lpni_healthy = health;
+ if (lpni->lpni_peer_net->lpn_peer->lp_state & LNET_PEER_CONFIGURED)
+ return true;
+ return false;
}
static inline bool
-lnet_is_peer_net_healthy_locked(struct lnet_peer_net *peer_net)
+lnet_peer_ni_is_primary(struct lnet_peer_ni *lpni)
{
- struct lnet_peer_ni *lpni;
+ return lpni->lpni_nid == lpni->lpni_peer_net->lpn_peer->lp_primary_nid;
+}
- list_for_each_entry(lpni, &peer_net->lpn_peer_nis,
- lpni_on_peer_net_list) {
- if (lnet_is_peer_ni_healthy_locked(lpni))
- return true;
- }
+bool lnet_peer_is_uptodate(struct lnet_peer *lp);
+static inline bool
+lnet_peer_needs_push(struct lnet_peer *lp)
+{
+ if (!(lp->lp_state & LNET_PEER_MULTI_RAIL))
+ return false;
+ if (lp->lp_state & LNET_PEER_FORCE_PUSH)
+ return true;
+ if (lp->lp_state & LNET_PEER_NO_DISCOVERY)
+ return false;
+ if (lp->lp_node_seqno < atomic_read(&the_lnet.ln_ping_target_seqno))
+ return true;
return false;
}
+/*
+ * A peer is alive if it satisfies the following two conditions:
+ * 1. peer health >= LNET_MAX_HEALTH_VALUE * router_sensitivity_percentage
+ * 2. the cached NI status received when we discover the peer is UP
+ */
static inline bool
-lnet_is_peer_healthy_locked(struct lnet_peer *peer)
+lnet_is_peer_ni_alive(struct lnet_peer_ni *lpni)
{
- struct lnet_peer_net *peer_net;
+ bool halive = false;
- list_for_each_entry(peer_net, &peer->lp_peer_nets, lpn_on_peer_list) {
- if (lnet_is_peer_net_healthy_locked(peer_net))
- return true;
- }
+ halive = (atomic_read(&lpni->lpni_healthv) >=
+ (LNET_MAX_HEALTH_VALUE * router_sensitivity_percentage / 100));
- return false;
+ return halive && lpni->lpni_ns_status == LNET_NI_STATUS_UP;
}
static inline void
-lnet_peer_set_alive(struct lnet_peer_ni *lp)
+lnet_inc_healthv(atomic_t *healthv)
{
- lp->lpni_last_alive = lp->lpni_last_query = cfs_time_current();
- if (!lp->lpni_alive)
- lnet_notify_locked(lp, 0, 1, lp->lpni_last_alive);
+ atomic_add_unless(healthv, 1, LNET_MAX_HEALTH_VALUE);
}
+void lnet_incr_stats(struct lnet_element_stats *stats,
+ enum lnet_msg_type msg_type,
+ enum lnet_stats_type stats_type);
+
+__u32 lnet_sum_stats(struct lnet_element_stats *stats,
+ enum lnet_stats_type stats_type);
+
+void lnet_usr_translate_stats(struct lnet_ioctl_element_msg_stats *msg_stats,
+ struct lnet_element_stats *stats);
+
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff