/*
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
*
- * Copyright (c) 2011, 2012, Intel Corporation.
+ * Copyright (c) 2011, 2013, Intel Corporation.
*
* Author: Zach Brown <zab@zabbo.net>
* Author: Peter J. Braam <braam@clusterfs.com>
*
*/
+#ifndef _SOCKLND_SOCKLND_H_
+#define _SOCKLND_SOCKLND_H_
+
#define DEBUG_PORTAL_ALLOC
#define DEBUG_SUBSYSTEM S_LND
-#if defined(__linux__)
-#include "socklnd_lib-linux.h"
-#elif defined(__APPLE__)
-#include "socklnd_lib-darwin.h"
-#elif defined(__WINNT__)
-#include "socklnd_lib-winnt.h"
-#else
-#error Unsupported Operating System
-#endif
+#include <asm/irq.h>
+#include <linux/crc32.h>
+#include <linux/errno.h>
+#include <linux/if.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/kmod.h>
+#include <linux/list.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/stat.h>
+#include <linux/string.h>
+#include <linux/syscalls.h>
+#include <linux/sysctl.h>
+#include <linux/uio.h>
+#include <linux/unistd.h>
+#include <net/sock.h>
+#include <net/tcp.h>
#include <libcfs/libcfs.h>
#include <lnet/lnet.h>
#include <lnet/lib-lnet.h>
#include <lnet/socklnd.h>
-#include <lnet/lnet-sysctl.h>
+
+#ifdef HAVE_TCP_SENDPAGE_USE_SOCKET
+# define cfs_tcp_sendpage(sk, page, offset, size, flags) \
+ tcp_sendpage((sk)->sk_socket, page, offset, size, flags)
+#else /* !HAVE_TCP_SENDPAGE_USE_SOCKET */
+# define cfs_tcp_sendpage(sk, page, offset, size, flags) \
+ tcp_sendpage(sk, page, offset, size, flags)
+#endif /* HAVE_TCP_SENDPAGE_USE_SOCKET */
+
+/* assume one thread for each connection type */
+#define SOCKNAL_NSCHEDS 3
+#define SOCKNAL_NSCHEDS_HIGH (SOCKNAL_NSCHEDS << 1)
#define SOCKNAL_PEER_HASH_SIZE 101 /* # peer lists */
#define SOCKNAL_RESCHED 100 /* # scheduler loops before reschedule */
typedef struct /* per scheduler state */
{
spinlock_t kss_lock; /* serialise */
- cfs_list_t kss_rx_conns; /* conn waiting to be read */
+ struct list_head kss_rx_conns; /* conn waiting to be read */
/* conn waiting to be written */
- cfs_list_t kss_tx_conns;
+ struct list_head kss_tx_conns;
/* zombie noop tx list */
- cfs_list_t kss_zombie_noop_txs;
- cfs_waitq_t kss_waitq; /* where scheduler sleeps */
+ 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 */
int *ksnd_protocol; /* protocol version */
#endif
#if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM
- cfs_sysctl_table_header_t *ksnd_sysctl; /* sysctl interface */
+ struct ctl_table_header *ksnd_sysctl; /* sysctl interface */
#endif
} ksock_tunables_t;
{
__u64 ksnn_incarnation; /* my epoch */
spinlock_t ksnn_lock; /* serialise */
- cfs_list_t ksnn_list; /* chain on global list */
+ struct list_head ksnn_list; /* chain on global list */
int ksnn_npeers; /* # peers */
int ksnn_shutdown; /* shutting down? */
int ksnn_ninterfaces; /* IP interfaces */
{
int ksnd_init; /* initialisation state */
int ksnd_nnets; /* # networks set up */
- cfs_list_t ksnd_nets; /* list of nets */
+ struct list_head ksnd_nets; /* list of nets */
/* stabilize peer/conn ops */
rwlock_t ksnd_global_lock;
/* hash table of all my known peers */
- cfs_list_t *ksnd_peers;
+ struct list_head *ksnd_peers;
int ksnd_peer_hash_size; /* size of ksnd_peers */
int ksnd_nthreads; /* # live threads */
/* schedulers information */
struct ksock_sched_info **ksnd_sched_info;
- cfs_atomic_t ksnd_nactive_txs; /* #active txs */
-
- cfs_list_t ksnd_deathrow_conns; /* conns to close: reaper_lock*/
- cfs_list_t ksnd_zombie_conns; /* conns to free: reaper_lock */
- cfs_list_t ksnd_enomem_conns; /* conns to retry: reaper_lock*/
- cfs_waitq_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 */
-
- cfs_list_t ksnd_connd_connreqs; /* incoming connection requests */
- cfs_list_t ksnd_connd_routes; /* routes waiting to be connected */
- cfs_waitq_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 */
-
- cfs_list_t ksnd_idle_noop_txs; /* list head for freed noop tx */
- spinlock_t ksnd_tx_lock; /* serialise, g_lock unsafe */
+ atomic_t ksnd_nactive_txs; /* #active txs */
+
+ /* conns to close: reaper_lock*/
+ struct list_head ksnd_deathrow_conns;
+ /* conns to free: reaper_lock */
+ struct list_head ksnd_zombie_conns;
+ /* conns to retry: reaper_lock*/
+ struct list_head ksnd_enomem_conns;
+ /* reaper sleeps here */
+ wait_queue_head_t ksnd_reaper_waitq;
+ /* when reaper will wake */
+ cfs_time_t ksnd_reaper_waketime;
+ /* serialise */
+ spinlock_t ksnd_reaper_lock;
+
+ int ksnd_enomem_tx; /* test ENOMEM sender */
+ int ksnd_stall_tx; /* test sluggish sender */
+ int ksnd_stall_rx; /* test sluggish receiver */
+
+ /* incoming connection requests */
+ struct list_head ksnd_connd_connreqs;
+ /* routes waiting to be connected */
+ struct list_head ksnd_connd_routes;
+ /* connds sleep here */
+ wait_queue_head_t ksnd_connd_waitq;
+ /* # connds connecting */
+ int ksnd_connd_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;
+ /* serialise */
+ spinlock_t ksnd_connd_lock;
+
+ /* list head for freed noop tx */
+ struct list_head ksnd_idle_noop_txs;
+ /* serialise, g_lock unsafe */
+ spinlock_t ksnd_tx_lock;
} ksock_nal_data_t;
typedef struct /* transmit packet */
{
- cfs_list_t tx_list; /* queue on conn for transmission etc */
- cfs_list_t tx_zc_list; /* queue on peer for ZC request */
- cfs_atomic_t tx_refcount; /* tx reference count */
- int tx_nob; /* # packet bytes */
- int tx_resid; /* residual bytes */
+ 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_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 */
+ 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 */
typedef struct ksock_conn
{
- struct ksock_peer *ksnc_peer; /* owning peer */
- struct ksock_route *ksnc_route; /* owning route */
- cfs_list_t ksnc_list; /* stash on peer's conn list */
- cfs_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 */
- cfs_atomic_t ksnc_conn_refcount; /* conn refcount */
- cfs_atomic_t ksnc_sock_refcount; /* sock refcount */
- ksock_sched_t *ksnc_scheduler; /* who schedules this connection */
- __u32 ksnc_myipaddr; /* my IP */
+ 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 */
+ cfs_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,
unsigned int ksnc_zc_capable:1; /* enable to ZC */
struct ksock_proto *ksnc_proto; /* protocol for the connection */
- /* reader */
- cfs_list_t ksnc_rx_list; /* where I enq waiting input or a forwarding descriptor */
+ /* READER */
+
+ /* where I enq waiting input or a forwarding descriptor */
+ struct list_head ksnc_rx_list;
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 */
* lnet_hdr_t, it's stored in
* ksnc_msg.ksm_u.lnetmsg */
- /* WRITER */
- cfs_list_t ksnc_tx_list; /* where I enq waiting for output space */
- cfs_list_t 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 */
- cfs_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 */
+ /* -- WRITER -- */
+ /* where I enq waiting for output space */
+ struct list_head ksnc_tx_list;
+ /* packets waiting to be sent */
+ struct list_head ksnc_tx_queue;
+ /* next TX that can carry a LNet message or ZC-ACK */
+ ksock_tx_t *ksnc_tx_carrier;
+ /* when (in jiffies) tx times out */
+ cfs_time_t ksnc_tx_deadline;
+ /* send buffer marker */
+ int ksnc_tx_bufnob;
+ /* # bytes queued */
+ atomic_t ksnc_tx_nob;
+ /* write space */
+ int ksnc_tx_ready;
+ /* being progressed */
+ int ksnc_tx_scheduled;
+ /* time stamp of the last posted TX */
+ cfs_time_t ksnc_tx_last_post;
} ksock_conn_t;
typedef struct ksock_route
{
- cfs_list_t ksnr_list; /* chain on peer route list */
- cfs_list_t ksnr_connd_list; /* chain on ksnr_connd_routes */
- struct ksock_peer *ksnr_peer; /* owning peer */
- cfs_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 */
+ 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 */
typedef struct ksock_peer
{
- cfs_list_t 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) */
- cfs_atomic_t ksnp_refcount; /* # users */
- int ksnp_sharecount; /* lconf usage counter */
- int ksnp_closing; /* being closed */
+ 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 */
- cfs_list_t ksnp_conns; /* all active connections */
- cfs_list_t ksnp_routes; /* routes */
- cfs_list_t ksnp_tx_queue; /* waiting packets */
+ 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 */
- cfs_list_t ksnp_zc_req_list; /* zero copy requests wait for ACK */
+ /* zero copy requests wait for ACK */
+ struct list_head ksnp_zc_req_list;
cfs_time_t ksnp_send_keepalive; /* time to send keepalive */
lnet_ni_t *ksnp_ni; /* which network */
int ksnp_n_passive_ips; /* # of... */
typedef struct ksock_connreq
{
- cfs_list_t ksncr_list; /* stash on ksnd_connd_connreqs */
- lnet_ni_t *ksncr_ni; /* chosen NI */
- cfs_socket_t *ksncr_sock; /* accepted socket */
+ /* stash on ksnd_connd_connreqs */
+ struct list_head ksncr_list;
+ /* chosen NI */
+ lnet_ni_t *ksncr_ni;
+ /* accepted socket */
+ cfs_socket_t *ksncr_sock;
} ksock_connreq_t;
extern ksock_nal_data_t ksocknal_data;
#define CPU_MASK_NONE 0UL
#endif
+static inline __u32 ksocknal_csum(__u32 crc, unsigned char const *p, size_t len)
+{
+#if 1
+ return crc32_le(crc, p, len);
+#else
+ while (len-- > 0)
+ crc = ((crc + 0x100) & ~0xff) | ((crc + *p++) & 0xff) ;
+
+ return crc;
+#endif
+}
+
static inline int
ksocknal_route_mask(void)
{
(1 << SOCKLND_CONN_BULK_OUT));
}
-static inline cfs_list_t *
+static inline struct list_head *
ksocknal_nid2peerlist (lnet_nid_t nid)
{
unsigned int hash = ((unsigned int)nid) % ksocknal_data.ksnd_peer_hash_size;
static inline void
ksocknal_conn_addref (ksock_conn_t *conn)
{
- LASSERT (cfs_atomic_read(&conn->ksnc_conn_refcount) > 0);
- cfs_atomic_inc(&conn->ksnc_conn_refcount);
+ LASSERT (atomic_read(&conn->ksnc_conn_refcount) > 0);
+ atomic_inc(&conn->ksnc_conn_refcount);
}
extern void ksocknal_queue_zombie_conn (ksock_conn_t *conn);
static inline void
ksocknal_conn_decref (ksock_conn_t *conn)
{
- LASSERT (cfs_atomic_read(&conn->ksnc_conn_refcount) > 0);
- if (cfs_atomic_dec_and_test(&conn->ksnc_conn_refcount))
- ksocknal_queue_zombie_conn(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;
+ int rc = -ESHUTDOWN;
read_lock(&ksocknal_data.ksnd_global_lock);
if (!conn->ksnc_closing) {
- LASSERT(cfs_atomic_read(&conn->ksnc_sock_refcount) > 0);
- cfs_atomic_inc(&conn->ksnc_sock_refcount);
+ 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);
+ return (rc);
}
static inline void
ksocknal_connsock_decref (ksock_conn_t *conn)
{
- LASSERT (cfs_atomic_read(&conn->ksnc_sock_refcount) > 0);
- if (cfs_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);
- }
+ 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 (cfs_atomic_read(&tx->tx_refcount) > 0);
- cfs_atomic_inc(&tx->tx_refcount);
+ LASSERT (atomic_read(&tx->tx_refcount) > 0);
+ atomic_inc(&tx->tx_refcount);
}
extern void ksocknal_tx_prep (ksock_conn_t *, ksock_tx_t *tx);
static inline void
ksocknal_tx_decref (ksock_tx_t *tx)
{
- LASSERT (cfs_atomic_read(&tx->tx_refcount) > 0);
- if (cfs_atomic_dec_and_test(&tx->tx_refcount))
- ksocknal_tx_done(NULL, 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 (cfs_atomic_read(&route->ksnr_refcount) > 0);
- cfs_atomic_inc(&route->ksnr_refcount);
+ 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 (cfs_atomic_read (&route->ksnr_refcount) > 0);
- if (cfs_atomic_dec_and_test(&route->ksnr_refcount))
- ksocknal_destroy_route (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 (cfs_atomic_read (&peer->ksnp_refcount) > 0);
- cfs_atomic_inc(&peer->ksnp_refcount);
+ 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 (cfs_atomic_read (&peer->ksnp_refcount) > 0);
- if (cfs_atomic_dec_and_test(&peer->ksnp_refcount))
- ksocknal_destroy_peer (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);
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 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 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, cfs_list_t *txlist,
- int error);
+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);
+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 int ksocknal_lib_memory_pressure(ksock_conn_t *conn);
extern int ksocknal_lib_bind_thread_to_cpu(int id);
+
+#endif /* _SOCKLND_SOCKLND_H_ */
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