#include <linux/kmod.h>
#include <asm/uaccess.h>
#include <asm/segment.h>
+#include <asm/div64.h>
#define DEBUG_SUBSYSTEM S_SOCKNAL
#include <portals/p30.h>
#include <portals/lib-p30.h>
-#define SOCKNAL_N_SCHED num_online_cpus() /* # socknal schedulers */
+#if CONFIG_SMP
+# define SOCKNAL_N_SCHED smp_num_cpus /* # socknal schedulers */
+#else
+# define SOCKNAL_N_SCHED 1 /* # socknal schedulers */
+#endif
+#define SOCKNAL_N_AUTOCONNECTD 4 /* # socknal autoconnect daemons */
+
+#define SOCKNAL_MIN_RECONNECT_INTERVAL HZ /* first failed connection retry... */
+#define SOCKNAL_MAX_RECONNECT_INTERVAL (60*HZ) /* ...exponentially increasing to this */
+
+#define SOCKNAL_IO_TIMEOUT (60*HZ) /* default comms timeout */
+
+#define SOCKNAL_PEER_HASH_SIZE 101 /* # peer lists */
#if PTL_LARGE_MTU
# define SOCKNAL_MAX_FWD_PAYLOAD (256<<10) /* biggest payload I can forward */
# define SOCKNAL_MAX_FWD_PAYLOAD (64<<10) /* biggest payload I can forward */
#endif
+#define SOCKNAL_ZC_MIN_FRAG (2<<10) /* default smallest zerocopy fragment */
+
#define SOCKNAL_NLTXS 128 /* # normal transmit messages */
#define SOCKNAL_NNBLK_LTXS 128 /* # transmit messages reserved if can't block */
#define SOCKNAL_RESCHED 100 /* # scheduler loops before reschedule */
-#define SOCKNAL_TX_LOW_WATER(sk) (((sk)->sndbuf*8)/10)
+#define SOCKNAL_TX_LOW_WATER(sk) (((sk)->sk_sndbuf*8)/10)
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
+# define jiffies_64 jiffies
+#endif
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,72))
+# define sk_data_ready data_ready
+# define sk_write_space write_space
+# define sk_user_data user_data
+# define sk_prot prot
+# define sk_sndbuf sndbuf
+# define sk_socket socket
+#endif
typedef struct /* pool of forwarding buffers */
{
} ksock_sched_t;
typedef struct {
+ int ksni_valid:1; /* been set yet? */
+ int ksni_bound:1; /* bound to a cpu yet? */
+ int ksni_sched:6; /* which scheduler (assumes < 64) */
+} ksock_irqinfo_t;
+
+typedef struct {
int ksnd_init; /* initialisation state */
- struct list_head ksnd_socklist; /* all my connections */
- rwlock_t ksnd_socklist_lock; /* stabilise add/find/remove */
+ 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 */
nal_cb_t *ksnd_nal_cb;
spinlock_t ksnd_nal_cb_lock; /* lib cli/sti lock */
atomic_t ksnd_nthreads; /* # live threads */
int ksnd_shuttingdown; /* tell threads to exit */
ksock_sched_t *ksnd_schedulers; /* scheduler state */
-
+
+ atomic_t ksnd_npeers; /* total # peers extant */
+ atomic_t ksnd_nclosing_conns; /* # closed conns extant */
+
kpr_router_t ksnd_router; /* THE router */
void *ksnd_fmbs; /* all the pre-allocated FMBs */
struct list_head ksnd_idle_ltx_list; /* where to get an idle LTX */
struct list_head ksnd_idle_nblk_ltx_list; /* where to get an idle LTX if you can't block */
wait_queue_head_t ksnd_idle_ltx_waitq; /* where to block for an idle LTX */
+ int ksnd_active_ltxs; /* #active ltxs */
- struct list_head ksnd_reaper_list; /* conn waiting to be reaped */
- wait_queue_head_t ksnd_reaper_waitq; /* reaper sleeps here */
+ struct list_head ksnd_deathrow_conns; /* conns to be closed */
+ struct list_head ksnd_zombie_conns; /* conns to be freed */
+ wait_queue_head_t ksnd_reaper_waitq; /* reaper sleep here */
spinlock_t ksnd_reaper_lock; /* serialise */
- unsigned char ksnd_irq_info[NR_IRQS]; /* irq->scheduler lookup */
+
+ int ksnd_stall_tx; /* test sluggish sender */
+ int ksnd_stall_rx; /* test sluggish receiver */
+
+ struct list_head ksnd_autoconnectd_routes; /* routes waiting to be connected */
+ wait_queue_head_t ksnd_autoconnectd_waitq; /* autoconnectds sleep here */
+ spinlock_t ksnd_autoconnectd_lock; /* serialise */
+
+ ksock_irqinfo_t ksnd_irqinfo[NR_IRQS];/* irq->scheduler lookup */
} ksock_nal_data_t;
#define SOCKNAL_INIT_NOTHING 0
#define SOCKNAL_INIT_PTL 2
#define SOCKNAL_INIT_ALL 3
-#define SOCKNAL_IRQ_BOUND 0x80 /* flag we _did_ bind already */
-#define SOCKNAL_IRQ_SCHED_MASK 0x7f /* we assume < 127 CPUs */
-#define SOCKNAL_IRQ_UNASSIGNED 0xff /* flag unassigned */
-
/* A packet just assembled for transmission is represented by 1 or more
* struct iovec fragments and 0 or more ptl_kiov_t fragments. Forwarded
* messages, or messages from an MD with PTL_MD_KIOV _not_ set have 0
* Otherwise up to PTL_MD_MAX_IOV ptl_kiov_t fragments are used.
*/
+struct ksock_conn; /* forward ref */
+struct ksock_peer; /* forward ref */
+struct ksock_route; /* forward ref */
+
typedef struct /* transmit packet */
{
struct list_head tx_list; /* queue on conn for transmission etc */
+ __u64 tx_deadline; /* when (in jiffies) tx times out */
char tx_isfwd; /* forwarding / sourced here */
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 */
ptl_kiov_t *tx_kiov; /* packet page frags */
+ struct ksock_conn *tx_conn; /* owning conn */
+ ptl_hdr_t *tx_hdr; /* packet header (for debug only) */
#if SOCKNAL_ZC
- ksock_sched_t *tx_sched; /* who to wake on callback */
zccd_t tx_zccd; /* zero copy callback descriptor */
#endif
} ksock_tx_t;
/* local packets (lib->socknal) embedded in ksock_ltx_t::ltx_tx */
/* NB list_entry() is used here as convenient macro for calculating a
- * pointer to a struct from the address of a member.
- */
+ * pointer to a struct from the address of a member. */
typedef struct /* Kernel portals Socket Forwarding message buffer */
{ /* (socknal->router) */
kpr_fwd_desc_t fmb_fwd; /* router's descriptor */
int fmb_npages; /* # pages allocated */
ksock_fmb_pool_t *fmb_pool; /* owning pool */
+ struct ksock_peer *fmb_peer; /* peer received from */
struct page *fmb_pages[SOCKNAL_LARGE_FWD_PAGES];
struct iovec fmb_iov[SOCKNAL_LARGE_FWD_PAGES];
} ksock_fmb_t;
#define SOCKNAL_RX_GET_FMB 5 /* scheduled for forwarding */
#define SOCKNAL_RX_FMB_SLEEP 6 /* blocked waiting for a fwd desc */
-typedef struct
+typedef struct ksock_conn
{
- struct list_head ksnc_list; /* stash on global socket list */
- struct file *ksnc_file; /* socket filp */
+ 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 */
- ptl_nid_t ksnc_peernid; /* who's on the other end */
atomic_t ksnc_refcount; /* # users */
ksock_sched_t *ksnc_scheduler; /* who schedules this connection */
-
+ __u32 ksnc_ipaddr; /* peer's IP */
+ int ksnc_port; /* peer's port */
+ int ksnc_closing; /* being shut down */
+
/* READER */
struct list_head ksnc_rx_list; /* where I enq waiting input or a forwarding descriptor */
- volatile int ksnc_rx_ready; /* data ready to read */
+ __u64 ksnc_rx_deadline; /* when receive times out */
+ int ksnc_rx_ready; /* data ready to read */
int ksnc_rx_scheduled; /* being progressed */
int ksnc_rx_state; /* what is being read */
int ksnc_rx_nob_left; /* # bytes to next hdr/body */
/* 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 */
- volatile int ksnc_tx_ready; /* write space */
+#if SOCKNAL_ZC
+ struct list_head ksnc_tx_pending; /* zc packets pending callback */
+#endif
+ atomic_t ksnc_tx_nob; /* # bytes queued */
+ int ksnc_tx_ready; /* write space */
int ksnc_tx_scheduled; /* being progressed */
-
} ksock_conn_t;
-extern int ksocknal_add_sock (ptl_nid_t nid, int fd, int client);
-extern int ksocknal_close_sock(ptl_nid_t nid);
-extern int ksocknal_set_mynid(ptl_nid_t nid);
-extern int ksocknal_push_sock(ptl_nid_t nid);
-extern ksock_conn_t *ksocknal_get_conn (ptl_nid_t nid);
-extern void _ksocknal_put_conn (ksock_conn_t *conn);
-extern void ksocknal_close_conn (ksock_conn_t *conn);
+typedef struct ksock_route
+{
+ struct list_head ksnr_list; /* chain on peer route list */
+ struct list_head ksnr_connect_list; /* chain on autoconnect list */
+ struct ksock_peer *ksnr_peer; /* owning peer */
+ atomic_t ksnr_refcount; /* # users */
+ int ksnr_sharecount; /* lconf usage counter */
+ __u64 ksnr_timeout; /* when reconnection can happen next */
+ unsigned int ksnr_retry_interval; /* how long between retries */
+ __u32 ksnr_ipaddr; /* an IP address for this peer */
+ int ksnr_port; /* port to connect to */
+ int ksnr_buffer_size; /* size of socket buffers */
+ unsigned int ksnr_irq_affinity:1; /* set affinity? */
+ unsigned int ksnr_xchange_nids:1; /* do hello protocol? */
+ unsigned int ksnr_nonagel:1; /* disable nagle? */
+ unsigned int ksnr_connecting; /* autoconnect in progress? */
+ unsigned int ksnr_deleted; /* been removed from peer? */
+ int ksnr_generation; /* connection incarnation # */
+ ksock_conn_t *ksnr_conn; /* NULL/active connection */
+} ksock_route_t;
+
+typedef struct ksock_peer
+{
+ struct list_head ksnp_list; /* stash on global peer list */
+ ptl_nid_t ksnp_nid; /* who's on the other end(s) */
+ atomic_t ksnp_refcount; /* # users */
+ int ksnp_closing; /* being closed */
+ struct list_head ksnp_conns; /* all active connections */
+ struct list_head ksnp_routes; /* routes */
+ struct list_head ksnp_tx_queue; /* waiting packets */
+} ksock_peer_t;
-static inline void
-ksocknal_put_conn (ksock_conn_t *conn)
+
+
+extern nal_cb_t ksocknal_lib;
+extern ksock_nal_data_t ksocknal_data;
+
+static inline struct list_head *
+ksocknal_nid2peerlist (ptl_nid_t nid)
{
- CDEBUG (D_OTHER, "putting conn[%p] -> "LPX64" (%d)\n",
- conn, conn->ksnc_peernid, atomic_read (&conn->ksnc_refcount));
+ unsigned int hash = ((unsigned int)nid) % ksocknal_data.ksnd_peer_hash_size;
+
+ return (&ksocknal_data.ksnd_peers [hash]);
+}
- if (atomic_dec_and_test (&conn->ksnc_refcount))
- _ksocknal_put_conn (conn);
+static inline int
+ksocknal_getconnsock (ksock_conn_t *conn)
+{
+ int rc = -ESHUTDOWN;
+
+ read_lock (&ksocknal_data.ksnd_global_lock);
+ if (!conn->ksnc_closing) {
+ rc = 0;
+ get_file (conn->ksnc_sock->file);
+ }
+ read_unlock (&ksocknal_data.ksnd_global_lock);
+
+ return (rc);
}
+static inline void
+ksocknal_putconnsock (ksock_conn_t *conn)
+{
+ fput (conn->ksnc_sock->file);
+}
+
+extern void ksocknal_put_route (ksock_route_t *route);
+extern void ksocknal_put_peer (ksock_peer_t *peer);
+extern ksock_peer_t *ksocknal_find_peer_locked (ptl_nid_t nid);
+extern ksock_peer_t *ksocknal_get_peer (ptl_nid_t nid);
+extern int ksocknal_del_route (ptl_nid_t nid, __u32 ipaddr,
+ int single, int keep_conn);
+extern int ksocknal_create_conn (ptl_nid_t nid, ksock_route_t *route,
+ struct socket *sock, int bind_irq);
+extern void ksocknal_close_conn_locked (ksock_conn_t *conn);
+extern int ksocknal_close_conn_unlocked (ksock_conn_t *conn);
+extern void ksocknal_terminate_conn (ksock_conn_t *conn);
+extern void ksocknal_destroy_conn (ksock_conn_t *conn);
+extern void ksocknal_put_conn (ksock_conn_t *conn);
+extern int ksocknal_close_conn (ptl_nid_t nid, __u32 ipaddr);
+
+extern void ksocknal_queue_tx_locked (ksock_tx_t *tx, ksock_conn_t *conn);
+extern void ksocknal_tx_done (ksock_tx_t *tx, int asynch);
+extern void ksocknal_fwd_packet (void *arg, kpr_fwd_desc_t *fwd);
+extern void ksocknal_fmb_callback (void *arg, int error);
extern int ksocknal_thread_start (int (*fn)(void *arg), void *arg);
extern int ksocknal_new_packet (ksock_conn_t *conn, int skip);
-extern void ksocknal_fwd_packet (void *arg, kpr_fwd_desc_t *fwd);
extern int ksocknal_scheduler (void *arg);
-extern int ksocknal_reaper (void *arg);
extern void ksocknal_data_ready(struct sock *sk, int n);
extern void ksocknal_write_space(struct sock *sk);
-
-
-extern nal_cb_t ksocknal_lib;
-extern ksock_nal_data_t ksocknal_data;
+extern int ksocknal_autoconnectd (void *arg);
+extern int ksocknal_reaper (void *arg);
+extern int ksocknal_set_linger (struct socket *sock);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff