*
*/
+#ifndef _SOCKLND_SOCKLND_H_
+#define _SOCKLND_SOCKLND_H_
+
#define DEBUG_PORTAL_ALLOC
#define DEBUG_SUBSYSTEM S_LND
-#include "socklnd_lib-linux.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 <asm/irq.h>
+#include <net/sock.h>
+#include <net/tcp.h>
#include "../../../include/linux/libcfs/libcfs.h"
#include "../../../include/linux/lnet/lnet.h"
#include "../../../include/linux/lnet/lib-lnet.h"
#include "../../../include/linux/lnet/socklnd.h"
-#include "../../../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 */
+/* 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 */
+#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_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 */
+#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. */
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 kvec kss_scratch_iov[LNET_MAX_IOV];
+ spinlock_t kss_lock; /* serialise */
+ struct list_head kss_rx_conns; /* conn waiting to be read */
+ struct list_head kss_tx_conns; /* conn waiting to be written */
+ struct list_head kss_zombie_noop_txs; /* zombie noop tx list */
+ wait_queue_head_t kss_waitq; /* where scheduler sleeps */
+ int kss_nconns; /* # connections assigned to
+ * this scheduler */
+ struct ksock_sched_info *kss_info; /* owner of it */
+ struct page *kss_rx_scratch_pgs[LNET_MAX_IOV];
+ struct kvec 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 */
+ 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))
+#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 */
+typedef struct /* in-use interface */
{
__u32 ksni_ipaddr; /* interface's IP address */
__u32 ksni_netmask; /* interface's network mask */
} 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 */
+ int *ksnd_timeout; /* "stuck" socket timeout
+ * (seconds) */
+ int *ksnd_nscheds; /* # scheduler threads in each
+ * pool while starting */
+ 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 */
} ksock_tunables_t;
typedef struct {
#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 */
- unsigned long 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 */
+ int ksnd_init; /* initialisation state
+ */
+ int ksnd_nnets; /* # networks set up */
+ struct list_head ksnd_nets; /* list of nets */
+ rwlock_t ksnd_global_lock; /* stabilize peer/conn
+ * ops */
+ struct list_head *ksnd_peers; /* hash table of all my
+ * known peers */
+ int ksnd_peer_hash_size; /* size of ksnd_peers */
+
+ int ksnd_nthreads; /* # live threads */
+ int ksnd_shuttingdown; /* tell threads to exit
+ */
+ struct ksock_sched_info **ksnd_sched_info; /* schedulers 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 */
+ unsigned long 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
+ */
+ time64_t ksnd_connd_failed_stamp;/* time stamp of the
+ * last failed
+ * connecting attempt */
+ time64_t ksnd_connd_starting_stamp;/* time stamp of the
+ * last starting connd
+ */
+ unsigned ksnd_connd_starting; /* # starting connd */
+ unsigned ksnd_connd_running; /* # running connd */
+ 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
+#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),
* 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 */
+struct ksock_conn; /* forward ref */
+struct ksock_peer; /* forward ref */
+struct ksock_route; /* forward ref */
+struct ksock_proto; /* forward ref */
-typedef struct /* transmit packet */
+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 kvec *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() */
- unsigned long tx_deadline; /* when (in jiffies) tx times out */
- ksock_msg_t tx_msg; /* socklnd message buffer */
- int tx_desc_size; /* size of this descriptor */
+ 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 kvec *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()
+ */
+ unsigned long 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 kvec iov; /* virt hdr */
- lnet_kiov_t kiov[0]; /* paged payload */
- } paged;
+ struct kvec iov; /* virt hdr */
+ lnet_kiov_t kiov[0]; /* paged payload */
+ } paged;
struct {
- struct kvec iov[1]; /* virt hdr + payload */
- } virt;
- } tx_frags;
+ struct kvec 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]))
+#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 */
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 */
+#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 */
- struct socket *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 */
+ 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 */
+ struct socket *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 */
- unsigned long 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 kvec *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 */
+ struct list_head ksnc_rx_list; /* where I enq waiting input or a
+ * forwarding descriptor */
+ unsigned long 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 kvec *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 */
- unsigned long 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 */
- unsigned long ksnc_tx_last_post; /* time stamp of the last posted TX */
+ 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 */
+ unsigned long 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 */
+ unsigned long 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 */
- unsigned long ksnr_timeout; /* when (in jiffies) reconnection can happen next */
- long 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 */
+ 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 */
+ unsigned long ksnr_timeout; /* when (in jiffies) reconnection
+ * can happen next */
+ long 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 */
+#define SOCKNAL_KEEPALIVE_PING 1 /* cookie for keepalive ping */
typedef struct ksock_peer {
- struct list_head ksnp_list; /* stash on global peer list */
- unsigned long 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 */
- unsigned long 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 */
+ struct list_head ksnp_list; /* stash on global peer list */
+ unsigned long 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 */
+ unsigned long ksnp_send_keepalive; /* time to send keepalive */
+ lnet_ni_t *ksnp_ni; /* which network */
+ int ksnp_n_passive_ips; /* # of... */
+
+ /* preferred local interfaces */
+ __u32 ksnp_passive_ips[LNET_MAX_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 */
- struct socket *ksncr_sock; /* accepted socket */
+ struct list_head ksncr_list; /* stash on ksnd_connd_connreqs */
+ lnet_ni_t *ksncr_ni; /* chosen NI */
+ struct socket *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 */
+#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 */
+ /* version number of protocol */
+ int pro_version;
+
+ /* handshake function */
+ 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);
+
+ /* message pack */
+ void (*pro_pack)(ksock_tx_t *);
+
+ /* message unpack */
+ void (*pro_unpack)(ksock_msg_t *);
+
+ /* queue tx on the connection */
+ ksock_tx_t *(*pro_queue_tx_msg)(ksock_conn_t *, ksock_tx_t *);
+
+ /* queue ZC ack on the connection */
+ int (*pro_queue_tx_zcack)(ksock_conn_t *, ksock_tx_t *, __u64);
+
+ /* handle ZC request */
+ int (*pro_handle_zcreq)(ksock_conn_t *, __u64, int);
+
+ /* handle ZC ACK */
+ int (*pro_handle_zcack)(ksock_conn_t *, __u64, __u64);
+
+ /* msg type matches the connection type:
+ * return value:
+ * return MATCH_NO : no
+ * return MATCH_YES : matching type
+ * return MATCH_MAY : can be backup */
+ int (*pro_match_tx)(ksock_conn_t *, ksock_tx_t *, int);
} 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
+#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 __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)
{
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);
+void ksocknal_queue_zombie_conn(ksock_conn_t *conn);
+void ksocknal_finalize_zcreq(ksock_conn_t *conn);
static inline void
ksocknal_conn_decref(ksock_conn_t *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(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);
+ sock_release(conn->ksnc_sock);
conn->ksnc_sock = NULL;
ksocknal_finalize_zcreq(conn);
}
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);
+void ksocknal_tx_prep(ksock_conn_t *, ksock_tx_t *tx);
+void ksocknal_tx_done(lnet_ni_t *ni, ksock_tx_t *tx);
static inline void
ksocknal_tx_decref(ksock_tx_t *tx)
atomic_inc(&route->ksnr_refcount);
}
-extern void ksocknal_destroy_route(ksock_route_t *route);
+void ksocknal_destroy_route(ksock_route_t *route);
static inline void
ksocknal_route_decref(ksock_route_t *route)
atomic_inc(&peer->ksnp_refcount);
}
-extern void ksocknal_destroy_peer(ksock_peer_t *peer);
+void ksocknal_destroy_peer(ksock_peer_t *peer);
static inline void
ksocknal_peer_decref(ksock_peer_t *peer)
unsigned int offset, unsigned int mlen, unsigned int rlen);
int ksocknal_accept(lnet_ni_t *ni, struct socket *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,
- struct socket *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, unsigned long *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(struct socket *sock, ksock_conn_t *conn);
-extern void ksocknal_lib_set_callback(struct socket *sock, ksock_conn_t *conn);
-extern void ksocknal_lib_reset_callback(struct socket *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(struct socket *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_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);
+int ksocknal_add_peer(lnet_ni_t *ni, lnet_process_id_t id, __u32 ip, int port);
+ksock_peer_t *ksocknal_find_peer_locked(lnet_ni_t *ni, lnet_process_id_t id);
+ksock_peer_t *ksocknal_find_peer(lnet_ni_t *ni, lnet_process_id_t id);
+void ksocknal_peer_failed(ksock_peer_t *peer);
+int ksocknal_create_conn(lnet_ni_t *ni, ksock_route_t *route,
+ struct socket *sock, int type);
+void ksocknal_close_conn_locked(ksock_conn_t *conn, int why);
+void ksocknal_terminate_conn(ksock_conn_t *conn);
+void ksocknal_destroy_conn(ksock_conn_t *conn);
+int ksocknal_close_peer_conns_locked(ksock_peer_t *peer,
+ __u32 ipaddr, int why);
+int ksocknal_close_conn_and_siblings(ksock_conn_t *conn, int why);
+int ksocknal_close_matching_conns(lnet_process_id_t id, __u32 ipaddr);
+ksock_conn_t *ksocknal_find_conn_locked(ksock_peer_t *peer,
+ ksock_tx_t *tx, int nonblk);
+
+int ksocknal_launch_packet(lnet_ni_t *ni, ksock_tx_t *tx,
+ lnet_process_id_t id);
+ksock_tx_t *ksocknal_alloc_tx(int type, int size);
+void ksocknal_free_tx(ksock_tx_t *tx);
+ksock_tx_t *ksocknal_alloc_tx_noop(__u64 cookie, int nonblk);
+void ksocknal_next_tx_carrier(ksock_conn_t *conn);
+void ksocknal_queue_tx_locked(ksock_tx_t *tx, ksock_conn_t *conn);
+void ksocknal_txlist_done(lnet_ni_t *ni, struct list_head *txlist, int error);
+void ksocknal_notify(lnet_ni_t *ni, lnet_nid_t gw_nid, int alive);
+void ksocknal_query(struct lnet_ni *ni, lnet_nid_t nid, unsigned long *when);
+int ksocknal_thread_start(int (*fn)(void *arg), void *arg, char *name);
+void ksocknal_thread_fini(void);
+void ksocknal_launch_all_connections_locked(ksock_peer_t *peer);
+ksock_route_t *ksocknal_find_connectable_route_locked(ksock_peer_t *peer);
+ksock_route_t *ksocknal_find_connecting_route_locked(ksock_peer_t *peer);
+int ksocknal_new_packet(ksock_conn_t *conn, int skip);
+int ksocknal_scheduler(void *arg);
+int ksocknal_connd(void *arg);
+int ksocknal_reaper(void *arg);
+int ksocknal_send_hello(lnet_ni_t *ni, ksock_conn_t *conn,
+ lnet_nid_t peer_nid, ksock_hello_msg_t *hello);
+int ksocknal_recv_hello(lnet_ni_t *ni, ksock_conn_t *conn,
+ ksock_hello_msg_t *hello, lnet_process_id_t *id,
+ __u64 *incarnation);
+void ksocknal_read_callback(ksock_conn_t *conn);
+void ksocknal_write_callback(ksock_conn_t *conn);
+
+int ksocknal_lib_zc_capable(ksock_conn_t *conn);
+void ksocknal_lib_save_callback(struct socket *sock, ksock_conn_t *conn);
+void ksocknal_lib_set_callback(struct socket *sock, ksock_conn_t *conn);
+void ksocknal_lib_reset_callback(struct socket *sock, ksock_conn_t *conn);
+void ksocknal_lib_push_conn(ksock_conn_t *conn);
+int ksocknal_lib_get_conn_addrs(ksock_conn_t *conn);
+int ksocknal_lib_setup_sock(struct socket *so);
+int ksocknal_lib_send_iov(ksock_conn_t *conn, ksock_tx_t *tx);
+int ksocknal_lib_send_kiov(ksock_conn_t *conn, ksock_tx_t *tx);
+void ksocknal_lib_eager_ack(ksock_conn_t *conn);
+int ksocknal_lib_recv_iov(ksock_conn_t *conn);
+int ksocknal_lib_recv_kiov(ksock_conn_t *conn);
+int ksocknal_lib_get_conn_tunables(ksock_conn_t *conn, int *txmem,
+ int *rxmem, int *nagle);
+
+int ksocknal_tunables_init(void);
+
+void ksocknal_lib_csum_tx(ksock_tx_t *tx);
+
+int ksocknal_lib_memory_pressure(ksock_conn_t *conn);
+int ksocknal_lib_bind_thread_to_cpu(int id);
+
+#endif /* _SOCKLND_SOCKLND_H_ */
Code Review / kvmfornfv.git / blobdiff