| /* |
| * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| * |
| * Copyright (c) 2011, 2012, Intel Corporation. |
| * |
| * Author: Zach Brown <zab@zabbo.net> |
| * Author: Peter J. Braam <braam@clusterfs.com> |
| * Author: Phil Schwan <phil@clusterfs.com> |
| * Author: Eric Barton <eric@bartonsoftware.com> |
| * |
| * This file is part of Lustre, http://www.lustre.org |
| * |
| * Portals is free software; you can redistribute it and/or |
| * modify it under the terms of version 2 of the GNU General Public |
| * License as published by the Free Software Foundation. |
| * |
| * Portals is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with Portals; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| * |
| */ |
| |
| #define DEBUG_PORTAL_ALLOC |
| #define DEBUG_SUBSYSTEM S_LND |
| |
| #include "socklnd_lib-linux.h" |
| |
| #include <linux/libcfs/libcfs.h> |
| #include <linux/lnet/lnet.h> |
| #include <linux/lnet/lib-lnet.h> |
| #include <linux/lnet/socklnd.h> |
| #include <linux/lnet/lnet-sysctl.h> |
| |
| #define SOCKNAL_PEER_HASH_SIZE 101 /* # peer lists */ |
| #define SOCKNAL_RESCHED 100 /* # scheduler loops before reschedule */ |
| #define SOCKNAL_INSANITY_RECONN 5000 /* connd is trying on reconn infinitely */ |
| #define SOCKNAL_ENOMEM_RETRY CFS_TICK /* jiffies between retries */ |
| |
| #define SOCKNAL_SINGLE_FRAG_TX 0 /* disable multi-fragment sends */ |
| #define SOCKNAL_SINGLE_FRAG_RX 0 /* disable multi-fragment receives */ |
| |
| #define SOCKNAL_VERSION_DEBUG 0 /* enable protocol version debugging */ |
| |
| /* risk kmap deadlock on multi-frag I/O (backs off to single-frag if disabled). |
| * no risk if we're not running on a CONFIG_HIGHMEM platform. */ |
| #ifdef CONFIG_HIGHMEM |
| # define SOCKNAL_RISK_KMAP_DEADLOCK 0 |
| #else |
| # define SOCKNAL_RISK_KMAP_DEADLOCK 1 |
| #endif |
| |
| struct ksock_sched_info; |
| |
| typedef struct /* per scheduler state */ |
| { |
| spinlock_t kss_lock; /* serialise */ |
| struct list_head kss_rx_conns; /* conn waiting to be read */ |
| /* conn waiting to be written */ |
| struct list_head kss_tx_conns; |
| /* zombie noop tx list */ |
| struct list_head kss_zombie_noop_txs; |
| wait_queue_head_t kss_waitq; /* where scheduler sleeps */ |
| /* # connections assigned to this scheduler */ |
| int kss_nconns; |
| struct ksock_sched_info *kss_info; /* owner of it */ |
| struct page *kss_rx_scratch_pgs[LNET_MAX_IOV]; |
| struct iovec kss_scratch_iov[LNET_MAX_IOV]; |
| } ksock_sched_t; |
| |
| struct ksock_sched_info { |
| int ksi_nthreads_max; /* max allowed threads */ |
| int ksi_nthreads; /* number of threads */ |
| int ksi_cpt; /* CPT id */ |
| ksock_sched_t *ksi_scheds; /* array of schedulers */ |
| }; |
| |
| #define KSOCK_CPT_SHIFT 16 |
| #define KSOCK_THREAD_ID(cpt, sid) (((cpt) << KSOCK_CPT_SHIFT) | (sid)) |
| #define KSOCK_THREAD_CPT(id) ((id) >> KSOCK_CPT_SHIFT) |
| #define KSOCK_THREAD_SID(id) ((id) & ((1UL << KSOCK_CPT_SHIFT) - 1)) |
| |
| typedef struct /* in-use interface */ |
| { |
| __u32 ksni_ipaddr; /* interface's IP address */ |
| __u32 ksni_netmask; /* interface's network mask */ |
| int ksni_nroutes; /* # routes using (active) */ |
| int ksni_npeers; /* # peers using (passive) */ |
| char ksni_name[IFNAMSIZ]; /* interface name */ |
| } ksock_interface_t; |
| |
| typedef struct |
| { |
| /* "stuck" socket timeout (seconds) */ |
| int *ksnd_timeout; |
| /* # scheduler threads in each pool while starting */ |
| int *ksnd_nscheds; |
| int *ksnd_nconnds; /* # connection daemons */ |
| int *ksnd_nconnds_max; /* max # connection daemons */ |
| int *ksnd_min_reconnectms; /* first connection retry after (ms)... */ |
| int *ksnd_max_reconnectms; /* ...exponentially increasing to this */ |
| int *ksnd_eager_ack; /* make TCP ack eagerly? */ |
| int *ksnd_typed_conns; /* drive sockets by type? */ |
| int *ksnd_min_bulk; /* smallest "large" message */ |
| int *ksnd_tx_buffer_size; /* socket tx buffer size */ |
| int *ksnd_rx_buffer_size; /* socket rx buffer size */ |
| int *ksnd_nagle; /* enable NAGLE? */ |
| int *ksnd_round_robin; /* round robin for multiple interfaces */ |
| int *ksnd_keepalive; /* # secs for sending keepalive NOOP */ |
| int *ksnd_keepalive_idle; /* # idle secs before 1st probe */ |
| int *ksnd_keepalive_count; /* # probes */ |
| int *ksnd_keepalive_intvl; /* time between probes */ |
| int *ksnd_credits; /* # concurrent sends */ |
| int *ksnd_peertxcredits; /* # concurrent sends to 1 peer */ |
| int *ksnd_peerrtrcredits; /* # per-peer router buffer credits */ |
| int *ksnd_peertimeout; /* seconds to consider peer dead */ |
| int *ksnd_enable_csum; /* enable check sum */ |
| int *ksnd_inject_csum_error; /* set non-zero to inject checksum error */ |
| int *ksnd_nonblk_zcack; /* always send zc-ack on non-blocking connection */ |
| unsigned int *ksnd_zc_min_payload; /* minimum zero copy payload size */ |
| int *ksnd_zc_recv; /* enable ZC receive (for Chelsio TOE) */ |
| int *ksnd_zc_recv_min_nfrags; /* minimum # of fragments to enable ZC receive */ |
| #if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM |
| ctl_table_header_t *ksnd_sysctl; /* sysctl interface */ |
| #endif |
| } ksock_tunables_t; |
| |
| typedef struct |
| { |
| __u64 ksnn_incarnation; /* my epoch */ |
| spinlock_t ksnn_lock; /* serialise */ |
| struct list_head ksnn_list; /* chain on global list */ |
| int ksnn_npeers; /* # peers */ |
| int ksnn_shutdown; /* shutting down? */ |
| int ksnn_ninterfaces; /* IP interfaces */ |
| ksock_interface_t ksnn_interfaces[LNET_MAX_INTERFACES]; |
| } ksock_net_t; |
| |
| /** connd timeout */ |
| #define SOCKNAL_CONND_TIMEOUT 120 |
| /** reserved thread for accepting & creating new connd */ |
| #define SOCKNAL_CONND_RESV 1 |
| |
| typedef struct |
| { |
| int ksnd_init; /* initialisation state */ |
| int ksnd_nnets; /* # networks set up */ |
| struct list_head ksnd_nets; /* list of nets */ |
| /* stabilize peer/conn ops */ |
| rwlock_t ksnd_global_lock; |
| /* hash table of all my known peers */ |
| struct list_head *ksnd_peers; |
| int ksnd_peer_hash_size; /* size of ksnd_peers */ |
| |
| int ksnd_nthreads; /* # live threads */ |
| int ksnd_shuttingdown; /* tell threads to exit */ |
| /* schedulers information */ |
| struct ksock_sched_info **ksnd_sched_info; |
| |
| atomic_t ksnd_nactive_txs; /* #active txs */ |
| |
| struct list_head ksnd_deathrow_conns; /* conns to close: reaper_lock*/ |
| struct list_head ksnd_zombie_conns; /* conns to free: reaper_lock */ |
| struct list_head ksnd_enomem_conns; /* conns to retry: reaper_lock*/ |
| wait_queue_head_t ksnd_reaper_waitq; /* reaper sleeps here */ |
| cfs_time_t ksnd_reaper_waketime;/* when reaper will wake */ |
| spinlock_t ksnd_reaper_lock; /* serialise */ |
| |
| int ksnd_enomem_tx; /* test ENOMEM sender */ |
| int ksnd_stall_tx; /* test sluggish sender */ |
| int ksnd_stall_rx; /* test sluggish receiver */ |
| |
| struct list_head ksnd_connd_connreqs; /* incoming connection requests */ |
| struct list_head ksnd_connd_routes; /* routes waiting to be connected */ |
| wait_queue_head_t ksnd_connd_waitq; /* connds sleep here */ |
| int ksnd_connd_connecting;/* # connds connecting */ |
| /** time stamp of the last failed connecting attempt */ |
| long ksnd_connd_failed_stamp; |
| /** # starting connd */ |
| unsigned ksnd_connd_starting; |
| /** time stamp of the last starting connd */ |
| long ksnd_connd_starting_stamp; |
| /** # running connd */ |
| unsigned ksnd_connd_running; |
| spinlock_t ksnd_connd_lock; /* serialise */ |
| |
| struct list_head ksnd_idle_noop_txs; /* list head for freed noop tx */ |
| spinlock_t ksnd_tx_lock; /* serialise, g_lock unsafe */ |
| |
| } ksock_nal_data_t; |
| |
| #define SOCKNAL_INIT_NOTHING 0 |
| #define SOCKNAL_INIT_DATA 1 |
| #define SOCKNAL_INIT_ALL 2 |
| |
| /* A packet just assembled for transmission is represented by 1 or more |
| * struct iovec fragments (the first frag contains the portals header), |
| * followed by 0 or more lnet_kiov_t fragments. |
| * |
| * On the receive side, initially 1 struct iovec fragment is posted for |
| * receive (the header). Once the header has been received, the payload is |
| * received into either struct iovec or lnet_kiov_t fragments, depending on |
| * what the header matched or whether the message needs forwarding. */ |
| |
| struct ksock_conn; /* forward ref */ |
| struct ksock_peer; /* forward ref */ |
| struct ksock_route; /* forward ref */ |
| struct ksock_proto; /* forward ref */ |
| |
| typedef struct /* transmit packet */ |
| { |
| struct list_head tx_list; /* queue on conn for transmission etc */ |
| struct list_head tx_zc_list; /* queue on peer for ZC request */ |
| atomic_t tx_refcount; /* tx reference count */ |
| int tx_nob; /* # packet bytes */ |
| int tx_resid; /* residual bytes */ |
| int tx_niov; /* # packet iovec frags */ |
| struct iovec *tx_iov; /* packet iovec frags */ |
| int tx_nkiov; /* # packet page frags */ |
| unsigned short tx_zc_aborted; /* aborted ZC request */ |
| unsigned short tx_zc_capable:1; /* payload is large enough for ZC */ |
| unsigned short tx_zc_checked:1; /* Have I checked if I should ZC? */ |
| unsigned short tx_nonblk:1; /* it's a non-blocking ACK */ |
| lnet_kiov_t *tx_kiov; /* packet page frags */ |
| struct ksock_conn *tx_conn; /* owning conn */ |
| lnet_msg_t *tx_lnetmsg; /* lnet message for lnet_finalize() */ |
| cfs_time_t tx_deadline; /* when (in jiffies) tx times out */ |
| ksock_msg_t tx_msg; /* socklnd message buffer */ |
| int tx_desc_size; /* size of this descriptor */ |
| union { |
| struct { |
| struct iovec iov; /* virt hdr */ |
| lnet_kiov_t kiov[0]; /* paged payload */ |
| } paged; |
| struct { |
| struct iovec iov[1]; /* virt hdr + payload */ |
| } virt; |
| } tx_frags; |
| } ksock_tx_t; |
| |
| #define KSOCK_NOOP_TX_SIZE ((int)offsetof(ksock_tx_t, tx_frags.paged.kiov[0])) |
| |
| /* network zero copy callback descriptor embedded in ksock_tx_t */ |
| |
| /* space for the rx frag descriptors; we either read a single contiguous |
| * header, or up to LNET_MAX_IOV frags of payload of either type. */ |
| typedef union { |
| struct iovec iov[LNET_MAX_IOV]; |
| lnet_kiov_t kiov[LNET_MAX_IOV]; |
| } ksock_rxiovspace_t; |
| |
| #define SOCKNAL_RX_KSM_HEADER 1 /* reading ksock message header */ |
| #define SOCKNAL_RX_LNET_HEADER 2 /* reading lnet message header */ |
| #define SOCKNAL_RX_PARSE 3 /* Calling lnet_parse() */ |
| #define SOCKNAL_RX_PARSE_WAIT 4 /* waiting to be told to read the body */ |
| #define SOCKNAL_RX_LNET_PAYLOAD 5 /* reading lnet payload (to deliver here) */ |
| #define SOCKNAL_RX_SLOP 6 /* skipping body */ |
| |
| typedef struct ksock_conn |
| { |
| struct ksock_peer *ksnc_peer; /* owning peer */ |
| struct ksock_route *ksnc_route; /* owning route */ |
| struct list_head ksnc_list; /* stash on peer's conn list */ |
| socket_t *ksnc_sock; /* actual socket */ |
| void *ksnc_saved_data_ready; /* socket's original data_ready() callback */ |
| void *ksnc_saved_write_space; /* socket's original write_space() callback */ |
| atomic_t ksnc_conn_refcount; /* conn refcount */ |
| atomic_t ksnc_sock_refcount; /* sock refcount */ |
| ksock_sched_t *ksnc_scheduler; /* who schedules this connection */ |
| __u32 ksnc_myipaddr; /* my IP */ |
| __u32 ksnc_ipaddr; /* peer's IP */ |
| int ksnc_port; /* peer's port */ |
| signed int ksnc_type:3; /* type of connection, |
| * should be signed value */ |
| unsigned int ksnc_closing:1; /* being shut down */ |
| unsigned int ksnc_flip:1; /* flip or not, only for V2.x */ |
| unsigned int ksnc_zc_capable:1; /* enable to ZC */ |
| struct ksock_proto *ksnc_proto; /* protocol for the connection */ |
| |
| /* reader */ |
| struct list_head ksnc_rx_list; /* where I enq waiting input or a forwarding descriptor */ |
| cfs_time_t ksnc_rx_deadline; /* when (in jiffies) receive times out */ |
| __u8 ksnc_rx_started; /* started receiving a message */ |
| __u8 ksnc_rx_ready; /* data ready to read */ |
| __u8 ksnc_rx_scheduled;/* being progressed */ |
| __u8 ksnc_rx_state; /* what is being read */ |
| int ksnc_rx_nob_left; /* # bytes to next hdr/body */ |
| int ksnc_rx_nob_wanted; /* bytes actually wanted */ |
| int ksnc_rx_niov; /* # iovec frags */ |
| struct iovec *ksnc_rx_iov; /* the iovec frags */ |
| int ksnc_rx_nkiov; /* # page frags */ |
| lnet_kiov_t *ksnc_rx_kiov; /* the page frags */ |
| ksock_rxiovspace_t ksnc_rx_iov_space;/* space for frag descriptors */ |
| __u32 ksnc_rx_csum; /* partial checksum for incoming data */ |
| void *ksnc_cookie; /* rx lnet_finalize passthru arg */ |
| ksock_msg_t ksnc_msg; /* incoming message buffer: |
| * V2.x message takes the |
| * whole struct |
| * V1.x message is a bare |
| * lnet_hdr_t, it's stored in |
| * ksnc_msg.ksm_u.lnetmsg */ |
| |
| /* WRITER */ |
| struct list_head ksnc_tx_list; /* where I enq waiting for output space */ |
| struct list_head ksnc_tx_queue; /* packets waiting to be sent */ |
| ksock_tx_t *ksnc_tx_carrier; /* next TX that can carry a LNet message or ZC-ACK */ |
| cfs_time_t ksnc_tx_deadline; /* when (in jiffies) tx times out */ |
| int ksnc_tx_bufnob; /* send buffer marker */ |
| atomic_t ksnc_tx_nob; /* # bytes queued */ |
| int ksnc_tx_ready; /* write space */ |
| int ksnc_tx_scheduled; /* being progressed */ |
| cfs_time_t ksnc_tx_last_post; /* time stamp of the last posted TX */ |
| } ksock_conn_t; |
| |
| typedef struct ksock_route |
| { |
| struct list_head ksnr_list; /* chain on peer route list */ |
| struct list_head ksnr_connd_list; /* chain on ksnr_connd_routes */ |
| struct ksock_peer *ksnr_peer; /* owning peer */ |
| atomic_t ksnr_refcount; /* # users */ |
| cfs_time_t ksnr_timeout; /* when (in jiffies) reconnection can happen next */ |
| cfs_duration_t ksnr_retry_interval; /* how long between retries */ |
| __u32 ksnr_myipaddr; /* my IP */ |
| __u32 ksnr_ipaddr; /* IP address to connect to */ |
| int ksnr_port; /* port to connect to */ |
| unsigned int ksnr_scheduled:1; /* scheduled for attention */ |
| unsigned int ksnr_connecting:1;/* connection establishment in progress */ |
| unsigned int ksnr_connected:4; /* connections established by type */ |
| unsigned int ksnr_deleted:1; /* been removed from peer? */ |
| unsigned int ksnr_share_count; /* created explicitly? */ |
| int ksnr_conn_count; /* # conns established by this route */ |
| } ksock_route_t; |
| |
| #define SOCKNAL_KEEPALIVE_PING 1 /* cookie for keepalive ping */ |
| |
| typedef struct ksock_peer |
| { |
| struct list_head ksnp_list; /* stash on global peer list */ |
| cfs_time_t ksnp_last_alive; /* when (in jiffies) I was last alive */ |
| lnet_process_id_t ksnp_id; /* who's on the other end(s) */ |
| atomic_t ksnp_refcount; /* # users */ |
| int ksnp_sharecount; /* lconf usage counter */ |
| int ksnp_closing; /* being closed */ |
| int ksnp_accepting;/* # passive connections pending */ |
| int ksnp_error; /* errno on closing last conn */ |
| __u64 ksnp_zc_next_cookie;/* ZC completion cookie */ |
| __u64 ksnp_incarnation; /* latest known peer incarnation */ |
| struct ksock_proto *ksnp_proto; /* latest known peer protocol */ |
| struct list_head ksnp_conns; /* all active connections */ |
| struct list_head ksnp_routes; /* routes */ |
| struct list_head ksnp_tx_queue; /* waiting packets */ |
| spinlock_t ksnp_lock; /* serialize, g_lock unsafe */ |
| struct list_head ksnp_zc_req_list; /* zero copy requests wait for ACK */ |
| cfs_time_t ksnp_send_keepalive; /* time to send keepalive */ |
| lnet_ni_t *ksnp_ni; /* which network */ |
| int ksnp_n_passive_ips; /* # of... */ |
| __u32 ksnp_passive_ips[LNET_MAX_INTERFACES]; /* preferred local interfaces */ |
| } ksock_peer_t; |
| |
| typedef struct ksock_connreq |
| { |
| struct list_head ksncr_list; /* stash on ksnd_connd_connreqs */ |
| lnet_ni_t *ksncr_ni; /* chosen NI */ |
| socket_t *ksncr_sock; /* accepted socket */ |
| } ksock_connreq_t; |
| |
| extern ksock_nal_data_t ksocknal_data; |
| extern ksock_tunables_t ksocknal_tunables; |
| |
| #define SOCKNAL_MATCH_NO 0 /* TX can't match type of connection */ |
| #define SOCKNAL_MATCH_YES 1 /* TX matches type of connection */ |
| #define SOCKNAL_MATCH_MAY 2 /* TX can be sent on the connection, but not preferred */ |
| |
| typedef struct ksock_proto |
| { |
| int pro_version; /* version number of protocol */ |
| int (*pro_send_hello)(ksock_conn_t *, ksock_hello_msg_t *); /* handshake function */ |
| int (*pro_recv_hello)(ksock_conn_t *, ksock_hello_msg_t *, int);/* handshake function */ |
| void (*pro_pack)(ksock_tx_t *); /* message pack */ |
| void (*pro_unpack)(ksock_msg_t *); /* message unpack */ |
| ksock_tx_t *(*pro_queue_tx_msg)(ksock_conn_t *, ksock_tx_t *); /* queue tx on the connection */ |
| int (*pro_queue_tx_zcack)(ksock_conn_t *, ksock_tx_t *, __u64); /* queue ZC ack on the connection */ |
| int (*pro_handle_zcreq)(ksock_conn_t *, __u64, int); /* handle ZC request */ |
| int (*pro_handle_zcack)(ksock_conn_t *, __u64, __u64); /* handle ZC ACK */ |
| int (*pro_match_tx)(ksock_conn_t *, ksock_tx_t *, int); /* msg type matches the connection type: |
| * return value: |
| * return MATCH_NO : no |
| * return MATCH_YES : matching type |
| * return MATCH_MAY : can be backup */ |
| } ksock_proto_t; |
| |
| extern ksock_proto_t ksocknal_protocol_v1x; |
| extern ksock_proto_t ksocknal_protocol_v2x; |
| extern ksock_proto_t ksocknal_protocol_v3x; |
| |
| #define KSOCK_PROTO_V1_MAJOR LNET_PROTO_TCP_VERSION_MAJOR |
| #define KSOCK_PROTO_V1_MINOR LNET_PROTO_TCP_VERSION_MINOR |
| #define KSOCK_PROTO_V1 KSOCK_PROTO_V1_MAJOR |
| |
| #ifndef CPU_MASK_NONE |
| #define CPU_MASK_NONE 0UL |
| #endif |
| |
| static inline int |
| ksocknal_route_mask(void) |
| { |
| if (!*ksocknal_tunables.ksnd_typed_conns) |
| return (1 << SOCKLND_CONN_ANY); |
| |
| return ((1 << SOCKLND_CONN_CONTROL) | |
| (1 << SOCKLND_CONN_BULK_IN) | |
| (1 << SOCKLND_CONN_BULK_OUT)); |
| } |
| |
| static inline struct list_head * |
| ksocknal_nid2peerlist (lnet_nid_t nid) |
| { |
| unsigned int hash = ((unsigned int)nid) % ksocknal_data.ksnd_peer_hash_size; |
| |
| return (&ksocknal_data.ksnd_peers [hash]); |
| } |
| |
| static inline void |
| ksocknal_conn_addref (ksock_conn_t *conn) |
| { |
| LASSERT (atomic_read(&conn->ksnc_conn_refcount) > 0); |
| atomic_inc(&conn->ksnc_conn_refcount); |
| } |
| |
| extern void ksocknal_queue_zombie_conn (ksock_conn_t *conn); |
| extern void ksocknal_finalize_zcreq(ksock_conn_t *conn); |
| |
| static inline void |
| ksocknal_conn_decref (ksock_conn_t *conn) |
| { |
| LASSERT (atomic_read(&conn->ksnc_conn_refcount) > 0); |
| if (atomic_dec_and_test(&conn->ksnc_conn_refcount)) |
| ksocknal_queue_zombie_conn(conn); |
| } |
| |
| static inline int |
| ksocknal_connsock_addref (ksock_conn_t *conn) |
| { |
| int rc = -ESHUTDOWN; |
| |
| read_lock(&ksocknal_data.ksnd_global_lock); |
| if (!conn->ksnc_closing) { |
| LASSERT(atomic_read(&conn->ksnc_sock_refcount) > 0); |
| atomic_inc(&conn->ksnc_sock_refcount); |
| rc = 0; |
| } |
| read_unlock(&ksocknal_data.ksnd_global_lock); |
| |
| return (rc); |
| } |
| |
| static inline void |
| ksocknal_connsock_decref (ksock_conn_t *conn) |
| { |
| LASSERT (atomic_read(&conn->ksnc_sock_refcount) > 0); |
| if (atomic_dec_and_test(&conn->ksnc_sock_refcount)) { |
| LASSERT (conn->ksnc_closing); |
| libcfs_sock_release(conn->ksnc_sock); |
| conn->ksnc_sock = NULL; |
| ksocknal_finalize_zcreq(conn); |
| } |
| } |
| |
| static inline void |
| ksocknal_tx_addref (ksock_tx_t *tx) |
| { |
| LASSERT (atomic_read(&tx->tx_refcount) > 0); |
| atomic_inc(&tx->tx_refcount); |
| } |
| |
| extern void ksocknal_tx_prep (ksock_conn_t *, ksock_tx_t *tx); |
| extern void ksocknal_tx_done (lnet_ni_t *ni, ksock_tx_t *tx); |
| |
| static inline void |
| ksocknal_tx_decref (ksock_tx_t *tx) |
| { |
| LASSERT (atomic_read(&tx->tx_refcount) > 0); |
| if (atomic_dec_and_test(&tx->tx_refcount)) |
| ksocknal_tx_done(NULL, tx); |
| } |
| |
| static inline void |
| ksocknal_route_addref (ksock_route_t *route) |
| { |
| LASSERT (atomic_read(&route->ksnr_refcount) > 0); |
| atomic_inc(&route->ksnr_refcount); |
| } |
| |
| extern void ksocknal_destroy_route (ksock_route_t *route); |
| |
| static inline void |
| ksocknal_route_decref (ksock_route_t *route) |
| { |
| LASSERT (atomic_read (&route->ksnr_refcount) > 0); |
| if (atomic_dec_and_test(&route->ksnr_refcount)) |
| ksocknal_destroy_route (route); |
| } |
| |
| static inline void |
| ksocknal_peer_addref (ksock_peer_t *peer) |
| { |
| LASSERT (atomic_read (&peer->ksnp_refcount) > 0); |
| atomic_inc(&peer->ksnp_refcount); |
| } |
| |
| extern void ksocknal_destroy_peer (ksock_peer_t *peer); |
| |
| static inline void |
| ksocknal_peer_decref (ksock_peer_t *peer) |
| { |
| LASSERT (atomic_read (&peer->ksnp_refcount) > 0); |
| if (atomic_dec_and_test(&peer->ksnp_refcount)) |
| ksocknal_destroy_peer (peer); |
| } |
| |
| int ksocknal_startup (lnet_ni_t *ni); |
| void ksocknal_shutdown (lnet_ni_t *ni); |
| int ksocknal_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg); |
| int ksocknal_send (lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg); |
| int ksocknal_recv(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg, |
| int delayed, unsigned int niov, |
| struct iovec *iov, lnet_kiov_t *kiov, |
| unsigned int offset, unsigned int mlen, unsigned int rlen); |
| int ksocknal_accept(lnet_ni_t *ni, socket_t *sock); |
| |
| extern int ksocknal_add_peer(lnet_ni_t *ni, lnet_process_id_t id, __u32 ip, int port); |
| extern ksock_peer_t *ksocknal_find_peer_locked (lnet_ni_t *ni, lnet_process_id_t id); |
| extern ksock_peer_t *ksocknal_find_peer (lnet_ni_t *ni, lnet_process_id_t id); |
| extern void ksocknal_peer_failed (ksock_peer_t *peer); |
| extern int ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route, |
| socket_t *sock, int type); |
| extern void ksocknal_close_conn_locked (ksock_conn_t *conn, int why); |
| extern void ksocknal_terminate_conn (ksock_conn_t *conn); |
| extern void ksocknal_destroy_conn (ksock_conn_t *conn); |
| extern int ksocknal_close_peer_conns_locked (ksock_peer_t *peer, |
| __u32 ipaddr, int why); |
| extern int ksocknal_close_conn_and_siblings (ksock_conn_t *conn, int why); |
| extern int ksocknal_close_matching_conns (lnet_process_id_t id, __u32 ipaddr); |
| extern ksock_conn_t *ksocknal_find_conn_locked(ksock_peer_t *peer, |
| ksock_tx_t *tx, int nonblk); |
| |
| extern int ksocknal_launch_packet(lnet_ni_t *ni, ksock_tx_t *tx, |
| lnet_process_id_t id); |
| extern ksock_tx_t *ksocknal_alloc_tx(int type, int size); |
| extern void ksocknal_free_tx (ksock_tx_t *tx); |
| extern ksock_tx_t *ksocknal_alloc_tx_noop(__u64 cookie, int nonblk); |
| extern void ksocknal_next_tx_carrier(ksock_conn_t *conn); |
| extern void ksocknal_queue_tx_locked (ksock_tx_t *tx, ksock_conn_t *conn); |
| extern void ksocknal_txlist_done (lnet_ni_t *ni, struct list_head *txlist, |
| int error); |
| extern void ksocknal_notify (lnet_ni_t *ni, lnet_nid_t gw_nid, int alive); |
| extern void ksocknal_query (struct lnet_ni *ni, lnet_nid_t nid, cfs_time_t *when); |
| extern int ksocknal_thread_start(int (*fn)(void *arg), void *arg, char *name); |
| extern void ksocknal_thread_fini (void); |
| extern void ksocknal_launch_all_connections_locked (ksock_peer_t *peer); |
| extern ksock_route_t *ksocknal_find_connectable_route_locked (ksock_peer_t *peer); |
| extern ksock_route_t *ksocknal_find_connecting_route_locked (ksock_peer_t *peer); |
| extern int ksocknal_new_packet (ksock_conn_t *conn, int skip); |
| extern int ksocknal_scheduler (void *arg); |
| extern int ksocknal_connd (void *arg); |
| extern int ksocknal_reaper (void *arg); |
| extern int ksocknal_send_hello (lnet_ni_t *ni, ksock_conn_t *conn, |
| lnet_nid_t peer_nid, ksock_hello_msg_t *hello); |
| extern int ksocknal_recv_hello (lnet_ni_t *ni, ksock_conn_t *conn, |
| ksock_hello_msg_t *hello, lnet_process_id_t *id, |
| __u64 *incarnation); |
| extern void ksocknal_read_callback(ksock_conn_t *conn); |
| extern void ksocknal_write_callback(ksock_conn_t *conn); |
| |
| extern int ksocknal_lib_zc_capable(ksock_conn_t *conn); |
| extern void ksocknal_lib_save_callback(socket_t *sock, ksock_conn_t *conn); |
| extern void ksocknal_lib_set_callback(socket_t *sock, ksock_conn_t *conn); |
| extern void ksocknal_lib_reset_callback(socket_t *sock, ksock_conn_t *conn); |
| extern void ksocknal_lib_push_conn (ksock_conn_t *conn); |
| extern int ksocknal_lib_get_conn_addrs (ksock_conn_t *conn); |
| extern int ksocknal_lib_setup_sock (socket_t *so); |
| extern int ksocknal_lib_send_iov (ksock_conn_t *conn, ksock_tx_t *tx); |
| extern int ksocknal_lib_send_kiov (ksock_conn_t *conn, ksock_tx_t *tx); |
| extern void ksocknal_lib_eager_ack (ksock_conn_t *conn); |
| extern int ksocknal_lib_recv_iov (ksock_conn_t *conn); |
| extern int ksocknal_lib_recv_kiov (ksock_conn_t *conn); |
| extern int ksocknal_lib_get_conn_tunables (ksock_conn_t *conn, int *txmem, |
| int *rxmem, int *nagle); |
| |
| extern int ksocknal_tunables_init(void); |
| extern void ksocknal_tunables_fini(void); |
| extern int ksocknal_lib_tunables_init(void); |
| extern void ksocknal_lib_tunables_fini(void); |
| |
| extern void ksocknal_lib_csum_tx(ksock_tx_t *tx); |
| |
| extern int ksocknal_lib_memory_pressure(ksock_conn_t *conn); |
| extern int ksocknal_lib_bind_thread_to_cpu(int id); |