* LIB functions follow
*
*/
-ptl_err_t
-ksocknal_read(nal_cb_t *nal, void *private, void *dst_addr,
- user_ptr src_addr, size_t len)
-{
- CDEBUG(D_NET, LPX64": reading %ld bytes from %p -> %p\n",
- nal->ni.nid, (long)len, src_addr, dst_addr);
-
- memcpy( dst_addr, src_addr, len );
- return PTL_OK;
-}
-
-ptl_err_t
-ksocknal_write(nal_cb_t *nal, void *private, user_ptr dst_addr,
- void *src_addr, size_t len)
-{
- CDEBUG(D_NET, LPX64": writing %ld bytes from %p -> %p\n",
- nal->ni.nid, (long)len, src_addr, dst_addr);
-
- memcpy( dst_addr, src_addr, len );
- return PTL_OK;
-}
-
-void *
-ksocknal_malloc(nal_cb_t *nal, size_t len)
-{
- void *buf;
-
- PORTAL_ALLOC(buf, len);
-
- if (buf != NULL)
- memset(buf, 0, len);
-
- return (buf);
-}
-
-void
-ksocknal_free(nal_cb_t *nal, void *buf, size_t len)
-{
- PORTAL_FREE(buf, len);
-}
-
-void
-ksocknal_printf(nal_cb_t *nal, const char *fmt, ...)
-{
- va_list ap;
- char msg[256];
-
- va_start (ap, fmt);
- vsnprintf (msg, sizeof (msg), fmt, ap); /* sprint safely */
- va_end (ap);
-
- msg[sizeof (msg) - 1] = 0; /* ensure terminated */
-
- CDEBUG (D_NET, "%s", msg);
-}
-
-void
-ksocknal_cli(nal_cb_t *nal, unsigned long *flags)
-{
- ksock_nal_data_t *data = nal->nal_data;
-
- /* OK to ignore 'flags'; we're only ever serialise threads and
- * never need to lock out interrupts */
- spin_lock(&data->ksnd_nal_cb_lock);
-}
-
-void
-ksocknal_sti(nal_cb_t *nal, unsigned long *flags)
-{
- ksock_nal_data_t *data;
- data = nal->nal_data;
-
- /* OK to ignore 'flags'; we're only ever serialise threads and
- * never need to lock out interrupts */
- spin_unlock(&data->ksnd_nal_cb_lock);
-}
-
-void
-ksocknal_callback(nal_cb_t *nal, void *private, lib_eq_t *eq, ptl_event_t *ev)
-{
- /* holding ksnd_nal_cb_lock */
-
- if (eq->event_callback != NULL)
- eq->event_callback(ev);
-
- if (waitqueue_active(&ksocknal_data.ksnd_yield_waitq))
- wake_up_all(&ksocknal_data.ksnd_yield_waitq);
-}
-
int
-ksocknal_dist(nal_cb_t *nal, ptl_nid_t nid, unsigned long *dist)
+ksocknal_dist(lib_nal_t *nal, ptl_nid_t nid, unsigned long *dist)
{
/* I would guess that if ksocknal_get_peer (nid) == NULL,
and we're not routing, then 'nid' is very distant :) */
- if ( nal->ni.nid == nid ) {
+ if (nal->libnal_ni.ni_pid.nid == nid) {
*dist = 0;
} else {
*dist = 1;
{
struct socket *sock = conn->ksnc_sock;
struct iovec *iov = tx->tx_iov;
- int fragsize = iov->iov_len;
- unsigned long vaddr = (unsigned long)iov->iov_base;
- int more = (tx->tx_niov > 1) ||
- (tx->tx_nkiov > 0) ||
- (!list_empty (&conn->ksnc_tx_queue));
#if (SOCKNAL_ZC && SOCKNAL_VADDR_ZC)
+ unsigned long vaddr = (unsigned long)iov->iov_base
int offset = vaddr & (PAGE_SIZE - 1);
- int zcsize = MIN (fragsize, PAGE_SIZE - offset);
+ int zcsize = MIN (iov->iov_len, PAGE_SIZE - offset);
struct page *page;
#endif
+ int nob;
int rc;
/* NB we can't trust socket ops to either consume our iovs
- * or leave them alone, so we only send 1 frag at a time. */
- LASSERT (fragsize <= tx->tx_resid);
+ * or leave them alone. */
LASSERT (tx->tx_niov > 0);
#if (SOCKNAL_ZC && SOCKNAL_VADDR_ZC)
(sock->sk->route_caps & NETIF_F_SG) &&
(sock->sk->route_caps & (NETIF_F_IP_CSUM | NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)) &&
(page = ksocknal_kvaddr_to_page (vaddr)) != NULL) {
+ int msgflg = MSG_DONTWAIT;
CDEBUG(D_NET, "vaddr %p, page %p->%p + offset %x for %d\n",
(void *)vaddr, page, page_address(page), offset, zcsize);
- if (fragsize > zcsize) {
- more = 1;
- fragsize = zcsize;
- }
-
- rc = tcp_sendpage_zccd(sock, page, offset, zcsize,
- more ? (MSG_DONTWAIT | MSG_MORE) : MSG_DONTWAIT,
- &tx->tx_zccd);
+ if (!list_empty (&conn->ksnc_tx_queue) ||
+ zcsize < tx->tx_resid)
+ msgflg |= MSG_MORE;
+
+ rc = tcp_sendpage_zccd(sock, page, offset, zcsize, msgflg, &tx->tx_zccd);
} else
#endif
{
- /* NB don't pass tx's iov; sendmsg may or may not update it */
- struct iovec fragiov = { .iov_base = (void *)vaddr,
- .iov_len = fragsize};
+#if SOCKNAL_SINGLE_FRAG_TX
+ struct iovec scratch;
+ struct iovec *scratchiov = &scratch;
+ int niov = 1;
+#else
+ struct iovec *scratchiov = conn->ksnc_tx_scratch_iov;
+ int niov = tx->tx_niov;
+#endif
struct msghdr msg = {
.msg_name = NULL,
.msg_namelen = 0,
- .msg_iov = &fragiov,
- .msg_iovlen = 1,
+ .msg_iov = scratchiov,
+ .msg_iovlen = niov,
.msg_control = NULL,
.msg_controllen = 0,
- .msg_flags = more ? (MSG_DONTWAIT | MSG_MORE) : MSG_DONTWAIT
+ .msg_flags = MSG_DONTWAIT
};
mm_segment_t oldmm = get_fs();
+ int i;
+ for (nob = i = 0; i < niov; i++) {
+ scratchiov[i] = tx->tx_iov[i];
+ nob += scratchiov[i].iov_len;
+ }
+
+ if (!list_empty(&conn->ksnc_tx_queue) ||
+ nob < tx->tx_resid)
+ msg.msg_flags |= MSG_MORE;
+
set_fs (KERNEL_DS);
- rc = sock_sendmsg(sock, &msg, fragsize);
+ rc = sock_sendmsg(sock, &msg, nob);
set_fs (oldmm);
}
- if (rc > 0) {
- tx->tx_resid -= rc;
+ if (rc <= 0) /* sent nothing? */
+ return (rc);
- if (rc < iov->iov_len) {
- /* didn't send whole iov entry... */
- iov->iov_base = (void *)(vaddr + rc);
- iov->iov_len -= rc;
- } else {
- tx->tx_iov++;
- tx->tx_niov--;
+ nob = rc;
+ LASSERT (nob <= tx->tx_resid);
+ tx->tx_resid -= nob;
+
+ /* "consume" iov */
+ do {
+ LASSERT (tx->tx_niov > 0);
+
+ if (nob < iov->iov_len) {
+ iov->iov_base = (void *)(((unsigned long)(iov->iov_base)) + nob);
+ iov->iov_len -= nob;
+ return (rc);
}
- }
+
+ nob -= iov->iov_len;
+ tx->tx_iov = ++iov;
+ tx->tx_niov--;
+ } while (nob != 0);
return (rc);
}
{
struct socket *sock = conn->ksnc_sock;
ptl_kiov_t *kiov = tx->tx_kiov;
- int fragsize = kiov->kiov_len;
- struct page *page = kiov->kiov_page;
- int offset = kiov->kiov_offset;
- int more = (tx->tx_nkiov > 1) ||
- (!list_empty (&conn->ksnc_tx_queue));
int rc;
-
+ int nob;
+
/* NB we can't trust socket ops to either consume our iovs
- * or leave them alone, so we only send 1 frag at a time. */
- LASSERT (fragsize <= tx->tx_resid);
- LASSERT (offset + fragsize <= PAGE_SIZE);
+ * or leave them alone. */
LASSERT (tx->tx_niov == 0);
LASSERT (tx->tx_nkiov > 0);
#if SOCKNAL_ZC
- if (fragsize >= ksocknal_tunables.ksnd_zc_min_frag &&
+ if (kiov->kiov_len >= ksocknal_tunables.ksnd_zc_min_frag &&
(sock->sk->route_caps & NETIF_F_SG) &&
(sock->sk->route_caps & (NETIF_F_IP_CSUM | NETIF_F_NO_CSUM | NETIF_F_HW_CSUM))) {
+ struct page *page = kiov->kiov_page;
+ int offset = kiov->kiov_offset;
+ int fragsize = kiov->kiov_len;
+ int msgflg = MSG_DONTWAIT;
CDEBUG(D_NET, "page %p + offset %x for %d\n",
- page, offset, fragsize);
+ page, offset, kiov->kiov_len);
+
+ if (!list_empty(&conn->ksnc_tx_queue) ||
+ fragsize < tx->tx_resid)
+ msgflg |= MSG_MORE;
- rc = tcp_sendpage_zccd(sock, page, offset, fragsize,
- more ? (MSG_DONTWAIT | MSG_MORE) : MSG_DONTWAIT,
+ rc = tcp_sendpage_zccd(sock, page, offset, fragsize, msgflg,
&tx->tx_zccd);
} else
#endif
{
- char *addr = ((char *)kmap (page)) + offset;
- struct iovec fragiov = {.iov_base = addr,
- .iov_len = fragsize};
+#if SOCKNAL_SINGLE_FRAG_TX || !SOCKNAL_RISK_KMAP_DEADLOCK
+ struct iovec scratch;
+ struct iovec *scratchiov = &scratch;
+ int niov = 1;
+#else
+#warning "XXX risk of kmap deadlock on multiple frags..."
+ struct iovec *scratchiov = conn->ksnc_tx_scratch_iov;
+ int niov = tx->tx_nkiov;
+#endif
struct msghdr msg = {
.msg_name = NULL,
.msg_namelen = 0,
- .msg_iov = &fragiov,
- .msg_iovlen = 1,
+ .msg_iov = scratchiov,
+ .msg_iovlen = niov,
.msg_control = NULL,
.msg_controllen = 0,
- .msg_flags = more ? (MSG_DONTWAIT | MSG_MORE) : MSG_DONTWAIT
+ .msg_flags = MSG_DONTWAIT
};
mm_segment_t oldmm = get_fs();
+ int i;
+ for (nob = i = 0; i < niov; i++) {
+ scratchiov[i].iov_base = kmap(kiov[i].kiov_page) +
+ kiov[i].kiov_offset;
+ nob += scratchiov[i].iov_len = kiov[i].kiov_len;
+ }
+
+ if (!list_empty(&conn->ksnc_tx_queue) ||
+ nob < tx->tx_resid)
+ msg.msg_flags |= MSG_DONTWAIT;
+
set_fs (KERNEL_DS);
- rc = sock_sendmsg(sock, &msg, fragsize);
+ rc = sock_sendmsg(sock, &msg, nob);
set_fs (oldmm);
- kunmap (page);
+ for (i = 0; i < niov; i++)
+ kunmap(kiov[i].kiov_page);
}
- if (rc > 0) {
- tx->tx_resid -= rc;
-
- if (rc < fragsize) {
- kiov->kiov_offset = offset + rc;
- kiov->kiov_len = fragsize - rc;
- } else {
- tx->tx_kiov++;
- tx->tx_nkiov--;
+ if (rc <= 0) /* sent nothing? */
+ return (rc);
+
+ nob = rc;
+ LASSERT (nob <= tx->tx_resid);
+ tx->tx_resid -= nob;
+
+ do {
+ LASSERT(tx->tx_nkiov > 0);
+
+ if (nob < kiov->kiov_len) {
+ kiov->kiov_offset += nob;
+ kiov->kiov_len -= nob;
+ return rc;
}
- }
+
+ nob -= kiov->kiov_len;
+ tx->tx_kiov = ++kiov;
+ tx->tx_nkiov--;
+ } while (nob != 0);
return (rc);
}
ksocknal_transmit (ksock_conn_t *conn, ksock_tx_t *tx)
{
int rc;
+ int bufnob;
if (ksocknal_data.ksnd_stall_tx != 0) {
set_current_state (TASK_UNINTERRUPTIBLE);
rc = ksocknal_send_kiov (conn, tx);
}
- if (rc <= 0) {
- /* Didn't write anything.
- *
- * NB: rc == 0 and rc == -EAGAIN both mean try
- * again later (linux stack returns -EAGAIN for
- * this, but Adaptech TOE returns 0).
- *
- * Also, sends never fail with -ENOMEM, just
- * -EAGAIN, but with the added bonus that we can't
- * expect write_space() to call us back to tell us
- * when to try sending again. We use the
- * SOCK_NOSPACE flag to diagnose... */
-
- LASSERT(rc != -ENOMEM);
-
- if (rc == 0 || rc == -EAGAIN) {
- if (test_bit(SOCK_NOSPACE,
- &conn->ksnc_sock->flags)) {
- rc = -EAGAIN;
- } else {
- static int counter;
-
- counter++;
- if ((counter & (-counter)) == counter)
- CWARN("%d ENOMEM tx %p\n",
- counter, conn);
- rc = -ENOMEM;
- }
+ bufnob = conn->ksnc_sock->sk->sk_wmem_queued;
+ if (rc > 0) /* sent something? */
+ conn->ksnc_tx_bufnob += rc; /* account it */
+
+ if (bufnob < conn->ksnc_tx_bufnob) {
+ /* allocated send buffer bytes < computed; infer
+ * something got ACKed */
+ conn->ksnc_tx_deadline = jiffies +
+ ksocknal_tunables.ksnd_io_timeout * HZ;
+ conn->ksnc_peer->ksnp_last_alive = jiffies;
+ conn->ksnc_tx_bufnob = bufnob;
+ mb();
+ }
+
+ if (rc <= 0) { /* Didn't write anything? */
+ unsigned long flags;
+ ksock_sched_t *sched;
+
+ if (rc == 0) /* some stacks return 0 instead of -EAGAIN */
+ rc = -EAGAIN;
+
+ if (rc != -EAGAIN)
+ break;
+
+ /* Check if EAGAIN is due to memory pressure */
+
+ sched = conn->ksnc_scheduler;
+ spin_lock_irqsave(&sched->kss_lock, flags);
+
+ if (!test_bit(SOCK_NOSPACE, &conn->ksnc_sock->flags) &&
+ !conn->ksnc_tx_ready) {
+ /* SOCK_NOSPACE is set when the socket fills
+ * and cleared in the write_space callback
+ * (which also sets ksnc_tx_ready). If
+ * SOCK_NOSPACE and ksnc_tx_ready are BOTH
+ * zero, I didn't fill the socket and
+ * write_space won't reschedule me, so I
+ * return -ENOMEM to get my caller to retry
+ * after a timeout */
+ rc = -ENOMEM;
}
+
+ spin_unlock_irqrestore(&sched->kss_lock, flags);
break;
}
+ /* socket's wmem_queued now includes 'rc' bytes */
+ atomic_sub (rc, &conn->ksnc_tx_nob);
rc = 0;
- /* Consider the connection alive since we managed to chuck
- * more data into it. Really, we'd like to consider it
- * alive only when the peer ACKs something, but
- * write_space() only gets called back while SOCK_NOSPACE
- * is set. Instead, we presume peer death has occurred if
- * the socket doesn't drain within a timout */
- conn->ksnc_tx_deadline = jiffies +
- ksocknal_tunables.ksnd_io_timeout * HZ;
- conn->ksnc_peer->ksnp_last_alive = jiffies;
-
} while (tx->tx_resid != 0);
ksocknal_putconnsock (conn);
int
ksocknal_recv_iov (ksock_conn_t *conn)
{
+#if SOCKNAL_SINGLE_FRAG_RX
+ struct iovec scratch;
+ struct iovec *scratchiov = &scratch;
+ int niov = 1;
+#else
+ struct iovec *scratchiov = conn->ksnc_rx_scratch_iov;
+ int niov = conn->ksnc_rx_niov;
+#endif
struct iovec *iov = conn->ksnc_rx_iov;
- int fragsize = iov->iov_len;
- unsigned long vaddr = (unsigned long)iov->iov_base;
- struct iovec fragiov = { .iov_base = (void *)vaddr,
- .iov_len = fragsize};
struct msghdr msg = {
.msg_name = NULL,
.msg_namelen = 0,
- .msg_iov = &fragiov,
- .msg_iovlen = 1,
+ .msg_iov = scratchiov,
+ .msg_iovlen = niov,
.msg_control = NULL,
.msg_controllen = 0,
.msg_flags = 0
};
mm_segment_t oldmm = get_fs();
+ int nob;
+ int i;
int rc;
/* NB we can't trust socket ops to either consume our iovs
- * or leave them alone, so we only receive 1 frag at a time. */
- LASSERT (conn->ksnc_rx_niov > 0);
- LASSERT (fragsize <= conn->ksnc_rx_nob_wanted);
+ * or leave them alone. */
+ LASSERT (niov > 0);
+
+ for (nob = i = 0; i < niov; i++) {
+ scratchiov[i] = iov[i];
+ nob += scratchiov[i].iov_len;
+ }
+ LASSERT (nob <= conn->ksnc_rx_nob_wanted);
set_fs (KERNEL_DS);
- rc = sock_recvmsg (conn->ksnc_sock, &msg, fragsize, MSG_DONTWAIT);
- /* NB this is just a boolean............................^ */
+ rc = sock_recvmsg (conn->ksnc_sock, &msg, nob, MSG_DONTWAIT);
+ /* NB this is just a boolean..........................^ */
set_fs (oldmm);
if (rc <= 0)
return (rc);
/* received something... */
+ nob = rc;
+
conn->ksnc_peer->ksnp_last_alive = jiffies;
conn->ksnc_rx_deadline = jiffies +
ksocknal_tunables.ksnd_io_timeout * HZ;
mb(); /* order with setting rx_started */
conn->ksnc_rx_started = 1;
- conn->ksnc_rx_nob_wanted -= rc;
- conn->ksnc_rx_nob_left -= rc;
+ conn->ksnc_rx_nob_wanted -= nob;
+ conn->ksnc_rx_nob_left -= nob;
+
+ do {
+ LASSERT (conn->ksnc_rx_niov > 0);
- if (rc < fragsize) {
- iov->iov_base = (void *)(vaddr + rc);
- iov->iov_len = fragsize - rc;
- return (-EAGAIN);
- }
+ if (nob < iov->iov_len) {
+ iov->iov_len -= nob;
+ iov->iov_base = (void *)(((unsigned long)iov->iov_base) + nob);
+ return (-EAGAIN);
+ }
+
+ nob -= iov->iov_len;
+ conn->ksnc_rx_iov = ++iov;
+ conn->ksnc_rx_niov--;
+ } while (nob != 0);
- conn->ksnc_rx_iov++;
- conn->ksnc_rx_niov--;
- return (1);
+ return (rc);
}
int
ksocknal_recv_kiov (ksock_conn_t *conn)
{
+#if SOCKNAL_SINGLE_FRAG_RX || !SOCKNAL_RISK_KMAP_DEADLOCK
+ struct iovec scratch;
+ struct iovec *scratchiov = &scratch;
+ int niov = 1;
+#else
+#warning "XXX risk of kmap deadlock on multiple frags..."
+ struct iovec *scratchiov = conn->ksnc_rx_scratch_iov;
+ int niov = conn->ksnc_rx_nkiov;
+#endif
ptl_kiov_t *kiov = conn->ksnc_rx_kiov;
- struct page *page = kiov->kiov_page;
- int offset = kiov->kiov_offset;
- int fragsize = kiov->kiov_len;
- unsigned long vaddr = ((unsigned long)kmap (page)) + offset;
- struct iovec fragiov = { .iov_base = (void *)vaddr,
- .iov_len = fragsize};
struct msghdr msg = {
.msg_name = NULL,
.msg_namelen = 0,
- .msg_iov = &fragiov,
- .msg_iovlen = 1,
+ .msg_iov = scratchiov,
+ .msg_iovlen = niov,
.msg_control = NULL,
.msg_controllen = 0,
.msg_flags = 0
};
mm_segment_t oldmm = get_fs();
+ int nob;
+ int i;
int rc;
- /* NB we can't trust socket ops to either consume our iovs
- * or leave them alone, so we only receive 1 frag at a time. */
- LASSERT (fragsize <= conn->ksnc_rx_nob_wanted);
LASSERT (conn->ksnc_rx_nkiov > 0);
- LASSERT (offset + fragsize <= PAGE_SIZE);
+
+ /* NB we can't trust socket ops to either consume our iovs
+ * or leave them alone. */
+ for (nob = i = 0; i < niov; i++) {
+ scratchiov[i].iov_base = kmap(kiov[i].kiov_page) + kiov[i].kiov_offset;
+ nob += scratchiov[i].iov_len = kiov[i].kiov_len;
+ }
+ LASSERT (nob <= conn->ksnc_rx_nob_wanted);
set_fs (KERNEL_DS);
- rc = sock_recvmsg (conn->ksnc_sock, &msg, fragsize, MSG_DONTWAIT);
- /* NB this is just a boolean............................^ */
+ rc = sock_recvmsg (conn->ksnc_sock, &msg, nob, MSG_DONTWAIT);
+ /* NB this is just a boolean.......................^ */
set_fs (oldmm);
- kunmap (page);
-
+ for (i = 0; i < niov; i++)
+ kunmap(kiov[i].kiov_page);
+
if (rc <= 0)
return (rc);
/* received something... */
+ nob = rc;
+
conn->ksnc_peer->ksnp_last_alive = jiffies;
conn->ksnc_rx_deadline = jiffies +
ksocknal_tunables.ksnd_io_timeout * HZ;
mb(); /* order with setting rx_started */
conn->ksnc_rx_started = 1;
- conn->ksnc_rx_nob_wanted -= rc;
- conn->ksnc_rx_nob_left -= rc;
+ conn->ksnc_rx_nob_wanted -= nob;
+ conn->ksnc_rx_nob_left -= nob;
+
+ do {
+ LASSERT (conn->ksnc_rx_nkiov > 0);
- if (rc < fragsize) {
- kiov->kiov_offset = offset + rc;
- kiov->kiov_len = fragsize - rc;
- return (-EAGAIN);
- }
+ if (nob < kiov->kiov_len) {
+ kiov->kiov_offset += nob;
+ kiov->kiov_len -= nob;
+ return -EAGAIN;
+ }
+
+ nob -= kiov->kiov_len;
+ conn->ksnc_rx_kiov = ++kiov;
+ conn->ksnc_rx_nkiov--;
+ } while (nob != 0);
- conn->ksnc_rx_kiov++;
- conn->ksnc_rx_nkiov--;
- return (1);
+ return 1;
}
int
ENTRY;
if (tx->tx_conn != NULL) {
- /* This tx got queued on a conn; do the accounting... */
- atomic_sub (tx->tx_nob, &tx->tx_conn->ksnc_tx_nob);
#if SOCKNAL_ZC
/* zero copy completion isn't always from
* process_transmit() so it needs to keep a ref on
return (rc);
if (rc == -ENOMEM) {
+ static int counter;
+
+ counter++; /* exponential backoff warnings */
+ if ((counter & (-counter)) == counter)
+ CWARN("%d ENOMEM tx %p\n", counter, conn);
+
/* Queue on ksnd_enomem_conns for retry after a timeout */
spin_lock_irqsave(&ksocknal_data.ksnd_reaper_lock, flags);
LASSERT (!route->ksnr_deleted);
LASSERT ((route->ksnr_connected & (1 << SOCKNAL_CONN_ANY)) == 0);
LASSERT ((route->ksnr_connected & KSNR_TYPED_ROUTES) != KSNR_TYPED_ROUTES);
- LASSERT (!route->ksnr_connecting);
+ LASSERT (route->ksnr_connecting == 0);
if (ksocknal_tunables.ksnd_typed_conns)
route->ksnr_connecting =
int tnob = 0;
ksock_conn_t *fallback = NULL;
int fnob = 0;
+ ksock_conn_t *conn;
- /* Find the conn with the shortest tx queue */
list_for_each (tmp, &peer->ksnp_conns) {
ksock_conn_t *c = list_entry(tmp, ksock_conn_t, ksnc_list);
+#if SOCKNAL_ROUND_ROBIN
+ const int nob = 0;
+#else
int nob = atomic_read(&c->ksnc_tx_nob) +
c->ksnc_sock->sk->sk_wmem_queued;
-
+#endif
LASSERT (!c->ksnc_closing);
if (fallback == NULL || nob < fnob) {
}
/* prefer the typed selection */
- return ((typed != NULL) ? typed : fallback);
+ conn = (typed != NULL) ? typed : fallback;
+
+#if SOCKNAL_ROUND_ROBIN
+ if (conn != NULL) {
+ /* round-robin all else being equal */
+ list_del (&conn->ksnc_list);
+ list_add_tail (&conn->ksnc_list, &peer->ksnp_conns);
+ }
+#endif
+ return conn;
}
void
#endif
spin_lock_irqsave (&sched->kss_lock, flags);
- conn->ksnc_tx_deadline = jiffies +
- ksocknal_tunables.ksnd_io_timeout * HZ;
- mb(); /* order with list_add_tail */
+ if (list_empty(&conn->ksnc_tx_queue) &&
+ conn->ksnc_sock->sk->sk_wmem_queued == 0) {
+ /* First packet starts the timeout */
+ conn->ksnc_tx_deadline = jiffies +
+ ksocknal_tunables.ksnd_io_timeout * HZ;
+ conn->ksnc_tx_bufnob = 0;
+ mb(); /* order with adding to tx_queue */
+ }
list_add_tail (&tx->tx_list, &conn->ksnc_tx_queue);
{
struct list_head *tmp;
ksock_route_t *route;
- ksock_route_t *candidate = NULL;
- int found = 0;
int bits;
list_for_each (tmp, &peer->ksnp_routes) {
route = list_entry (tmp, ksock_route_t, ksnr_list);
bits = route->ksnr_connected;
-
- if ((bits & KSNR_TYPED_ROUTES) == KSNR_TYPED_ROUTES ||
- (bits & (1 << SOCKNAL_CONN_ANY)) != 0 ||
- route->ksnr_connecting != 0) {
- /* All typed connections have been established, or
- * an untyped connection has been established, or
- * connections are currently being established */
- found = 1;
+
+ /* All typed connections established? */
+ if ((bits & KSNR_TYPED_ROUTES) == KSNR_TYPED_ROUTES)
+ continue;
+
+ /* Untyped connection established? */
+ if ((bits & (1 << SOCKNAL_CONN_ANY)) != 0)
+ continue;
+
+ /* connection being established? */
+ if (route->ksnr_connecting != 0)
continue;
- }
/* too soon to retry this guy? */
if (!time_after_eq (jiffies, route->ksnr_timeout))
continue;
- /* always do eager routes */
- if (route->ksnr_eager)
- return (route);
-
- if (candidate == NULL) {
- /* If we don't find any other route that is fully
- * connected or connecting, the first connectable
- * route is returned. If it fails to connect, it
- * will get placed at the end of the list */
- candidate = route;
- }
+ return (route);
}
-
- return (found ? NULL : candidate);
+
+ return (NULL);
}
ksock_route_t *
tx->tx_hdr = (ptl_hdr_t *)tx->tx_iov[0].iov_base;
g_lock = &ksocknal_data.ksnd_global_lock;
+#if !SOCKNAL_ROUND_ROBIN
read_lock (g_lock);
-
+
peer = ksocknal_find_target_peer_locked (tx, nid);
if (peer == NULL) {
read_unlock (g_lock);
return (0);
}
}
-
- /* Making one or more connections; I'll need a write lock... */
-
- atomic_inc (&peer->ksnp_refcount); /* +1 ref for me while I unlock */
+
+ /* I'll need a write lock... */
read_unlock (g_lock);
- write_lock_irqsave (g_lock, flags);
-
- if (peer->ksnp_closing) { /* peer deleted as I blocked! */
- write_unlock_irqrestore (g_lock, flags);
- ksocknal_put_peer (peer);
+#endif
+ write_lock_irqsave(g_lock, flags);
+
+ peer = ksocknal_find_target_peer_locked (tx, nid);
+ if (peer == NULL) {
+ write_unlock_irqrestore(g_lock, flags);
return (-EHOSTUNREACH);
}
- ksocknal_put_peer (peer); /* drop ref I got above */
for (;;) {
/* launch any/all autoconnections that need it */
}
ptl_err_t
-ksocknal_sendmsg(nal_cb_t *nal,
+ksocknal_sendmsg(lib_nal_t *nal,
void *private,
lib_msg_t *cookie,
ptl_hdr_t *hdr,
}
ptl_err_t
-ksocknal_send (nal_cb_t *nal, void *private, lib_msg_t *cookie,
+ksocknal_send (lib_nal_t *nal, void *private, lib_msg_t *cookie,
ptl_hdr_t *hdr, int type, ptl_nid_t nid, ptl_pid_t pid,
unsigned int payload_niov, struct iovec *payload_iov,
size_t payload_offset, size_t payload_len)
}
ptl_err_t
-ksocknal_send_pages (nal_cb_t *nal, void *private, lib_msg_t *cookie,
+ksocknal_send_pages (lib_nal_t *nal, void *private, lib_msg_t *cookie,
ptl_hdr_t *hdr, int type, ptl_nid_t nid, ptl_pid_t pid,
unsigned int payload_niov, ptl_kiov_t *payload_kiov,
size_t payload_offset, size_t payload_len)
fwd->kprfd_gateway_nid, fwd->kprfd_target_nid);
/* I'm the gateway; must be the last hop */
- if (nid == ksocknal_lib.ni.nid)
+ if (nid == ksocknal_lib.libnal_ni.ni_pid.nid)
nid = fwd->kprfd_target_nid;
/* setup iov for hdr */
int
ksocknal_thread_start (int (*fn)(void *arg), void *arg)
{
- long pid = kernel_thread (fn, arg, 0);
+ long pid = kernel_thread (fn, arg, 0);
+ unsigned long flags;
if (pid < 0)
return ((int)pid);
- atomic_inc (&ksocknal_data.ksnd_nthreads);
+ write_lock_irqsave(&ksocknal_data.ksnd_global_lock, flags);
+ ksocknal_data.ksnd_nthreads++;
+ write_unlock_irqrestore(&ksocknal_data.ksnd_global_lock, flags);
return (0);
}
void
ksocknal_thread_fini (void)
{
- atomic_dec (&ksocknal_data.ksnd_nthreads);
+ unsigned long flags;
+
+ write_lock_irqsave(&ksocknal_data.ksnd_global_lock, flags);
+ ksocknal_data.ksnd_nthreads--;
+ write_unlock_irqrestore(&ksocknal_data.ksnd_global_lock, flags);
}
void
{
ksock_fmb_t *fmb = (ksock_fmb_t *)arg;
ksock_fmb_pool_t *fmp = fmb->fmb_pool;
- ptl_hdr_t *hdr = (ptl_hdr_t *)page_address(fmb->fmb_kiov[0].kiov_page);
+ ptl_hdr_t *hdr = &fmb->fmb_hdr;
ksock_conn_t *conn = NULL;
ksock_sched_t *sched;
unsigned long flags;
if (error != 0)
CERROR("Failed to route packet from "
LPX64" %s to "LPX64" %s: %d\n",
- NTOH__u64(hdr->src_nid),
- portals_nid2str(SOCKNAL, NTOH__u64(hdr->src_nid), ipbuf),
- NTOH__u64(hdr->dest_nid),
- portals_nid2str(SOCKNAL, NTOH__u64(hdr->dest_nid), ipbuf2),
+ le64_to_cpu(hdr->src_nid),
+ portals_nid2str(SOCKNAL, le64_to_cpu(hdr->src_nid), ipbuf),
+ le64_to_cpu(hdr->dest_nid),
+ portals_nid2str(SOCKNAL, le64_to_cpu(hdr->dest_nid), ipbuf2),
error);
else
CDEBUG (D_NET, "routed packet from "LPX64" to "LPX64": OK\n",
- NTOH__u64 (hdr->src_nid), NTOH__u64 (hdr->dest_nid));
+ le64_to_cpu(hdr->src_nid), le64_to_cpu(hdr->dest_nid));
/* drop peer ref taken on init */
ksocknal_put_peer (fmb->fmb_peer);
ksocknal_init_fmb (ksock_conn_t *conn, ksock_fmb_t *fmb)
{
int payload_nob = conn->ksnc_rx_nob_left;
- ptl_nid_t dest_nid = NTOH__u64 (conn->ksnc_hdr.dest_nid);
+ ptl_nid_t dest_nid = le64_to_cpu(conn->ksnc_hdr.dest_nid);
int niov = 0;
int nob = payload_nob;
if (payload_nob == 0) { /* got complete packet already */
CDEBUG (D_NET, "%p "LPX64"->"LPX64" fwd_start (immediate)\n",
- conn, NTOH__u64 (conn->ksnc_hdr.src_nid), dest_nid);
+ conn, le64_to_cpu(conn->ksnc_hdr.src_nid), dest_nid);
kpr_fwd_start (&ksocknal_data.ksnd_router, &fmb->fmb_fwd);
memcpy(conn->ksnc_rx_kiov, fmb->fmb_kiov, niov * sizeof(ptl_kiov_t));
CDEBUG (D_NET, "%p "LPX64"->"LPX64" %d reading body\n", conn,
- NTOH__u64 (conn->ksnc_hdr.src_nid), dest_nid, payload_nob);
+ le64_to_cpu(conn->ksnc_hdr.src_nid), dest_nid, payload_nob);
return (0);
}
ksocknal_fwd_parse (ksock_conn_t *conn)
{
ksock_peer_t *peer;
- ptl_nid_t dest_nid = NTOH__u64 (conn->ksnc_hdr.dest_nid);
- ptl_nid_t src_nid = NTOH__u64 (conn->ksnc_hdr.src_nid);
- int body_len = NTOH__u32 (conn->ksnc_hdr.payload_length);
+ ptl_nid_t dest_nid = le64_to_cpu(conn->ksnc_hdr.dest_nid);
+ ptl_nid_t src_nid = le64_to_cpu(conn->ksnc_hdr.src_nid);
+ int body_len = le32_to_cpu(conn->ksnc_hdr.payload_length);
char str[PTL_NALFMT_SIZE];
char str2[PTL_NALFMT_SIZE];
switch (conn->ksnc_rx_state) {
case SOCKNAL_RX_HEADER:
- if (conn->ksnc_hdr.type != HTON__u32(PTL_MSG_HELLO) &&
- NTOH__u64(conn->ksnc_hdr.dest_nid) != ksocknal_lib.ni.nid) {
+ if (conn->ksnc_hdr.type != cpu_to_le32(PTL_MSG_HELLO) &&
+ le64_to_cpu(conn->ksnc_hdr.dest_nid) !=
+ ksocknal_lib.libnal_ni.ni_pid.nid) {
/* This packet isn't for me */
ksocknal_fwd_parse (conn);
switch (conn->ksnc_rx_state) {
}
/* sets wanted_len, iovs etc */
- lib_parse(&ksocknal_lib, &conn->ksnc_hdr, conn);
+ rc = lib_parse(&ksocknal_lib, &conn->ksnc_hdr, conn);
+
+ if (rc != PTL_OK) {
+ /* I just received garbage: give up on this conn */
+ ksocknal_close_conn_and_siblings (conn, rc);
+ return (-EPROTO);
+ }
if (conn->ksnc_rx_nob_wanted != 0) { /* need to get payload? */
conn->ksnc_rx_state = SOCKNAL_RX_BODY;
case SOCKNAL_RX_BODY_FWD:
/* payload all received */
CDEBUG (D_NET, "%p "LPX64"->"LPX64" %d fwd_start (got body)\n",
- conn, NTOH__u64 (conn->ksnc_hdr.src_nid),
- NTOH__u64 (conn->ksnc_hdr.dest_nid),
+ conn, le64_to_cpu(conn->ksnc_hdr.src_nid),
+ le64_to_cpu(conn->ksnc_hdr.dest_nid),
conn->ksnc_rx_nob_left);
/* forward the packet. NB ksocknal_init_fmb() put fmb into
}
ptl_err_t
-ksocknal_recv (nal_cb_t *nal, void *private, lib_msg_t *msg,
+ksocknal_recv (lib_nal_t *nal, void *private, lib_msg_t *msg,
unsigned int niov, struct iovec *iov,
size_t offset, size_t mlen, size_t rlen)
{
}
ptl_err_t
-ksocknal_recv_pages (nal_cb_t *nal, void *private, lib_msg_t *msg,
+ksocknal_recv_pages (lib_nal_t *nal, void *private, lib_msg_t *msg,
unsigned int niov, ptl_kiov_t *kiov,
size_t offset, size_t mlen, size_t rlen)
{
return (PTL_OK);
}
+static inline int
+ksocknal_sched_cansleep(ksock_sched_t *sched)
+{
+ unsigned long flags;
+ int rc;
+
+ spin_lock_irqsave(&sched->kss_lock, flags);
+
+ rc = (!ksocknal_data.ksnd_shuttingdown &&
+#if SOCKNAL_ZC
+ list_empty(&sched->kss_zctxdone_list) &&
+#endif
+ list_empty(&sched->kss_rx_conns) &&
+ list_empty(&sched->kss_tx_conns));
+
+ spin_unlock_irqrestore(&sched->kss_lock, flags);
+ return (rc);
+}
+
int ksocknal_scheduler (void *arg)
{
ksock_sched_t *sched = (ksock_sched_t *)arg;
kportal_blockallsigs ();
#if (CONFIG_SMP && CPU_AFFINITY)
- if ((cpu_online_map & (1 << id)) != 0) {
-#if 1
- current->cpus_allowed = (1 << id);
-#else
- set_cpus_allowed (current, 1<<id);
-#endif
+ id = ksocknal_sched2cpu(id);
+ if (cpu_online(id)) {
+ cpumask_t m;
+ cpu_set(id, m);
+ set_cpus_allowed(current, m);
} else {
- CERROR ("Can't set CPU affinity for %s\n", name);
+ CERROR ("Can't set CPU affinity for %s to %d\n", name, id);
}
#endif /* CONFIG_SMP && CPU_AFFINITY */
nloops = 0;
if (!did_something) { /* wait for something to do */
-#if SOCKNAL_ZC
- rc = wait_event_interruptible (sched->kss_waitq,
- ksocknal_data.ksnd_shuttingdown ||
- !list_empty(&sched->kss_rx_conns) ||
- !list_empty(&sched->kss_tx_conns) ||
- !list_empty(&sched->kss_zctxdone_list));
-#else
rc = wait_event_interruptible (sched->kss_waitq,
- ksocknal_data.ksnd_shuttingdown ||
- !list_empty(&sched->kss_rx_conns) ||
- !list_empty(&sched->kss_tx_conns));
-#endif
+ !ksocknal_sched_cansleep(sched));
LASSERT (rc == 0);
} else
our_cond_resched();
}
if (tcp_wspace(sk) >= SOCKNAL_TX_LOW_WATER(sk)) { /* got enough space */
- clear_bit (SOCK_NOSPACE, &sk->sk_socket->flags);
-
sched = conn->ksnc_scheduler;
spin_lock_irqsave (&sched->kss_lock, flags);
+ clear_bit (SOCK_NOSPACE, &sk->sk_socket->flags);
conn->ksnc_tx_ready = 1;
if (!conn->ksnc_tx_scheduled && // not being progressed
}
int
-ksocknal_hello (struct socket *sock, ptl_nid_t *nid, int *type,
- __u64 *incarnation)
+ksocknal_send_hello (ksock_conn_t *conn, __u32 *ipaddrs, int nipaddrs)
{
- int rc;
+ /* CAVEAT EMPTOR: this byte flips 'ipaddrs' */
+ struct socket *sock = conn->ksnc_sock;
ptl_hdr_t hdr;
ptl_magicversion_t *hmv = (ptl_magicversion_t *)&hdr.dest_nid;
- char ipbuf[PTL_NALFMT_SIZE];
- char ipbuf2[PTL_NALFMT_SIZE];
+ int i;
+ int rc;
- LASSERT (sizeof (*hmv) == sizeof (hdr.dest_nid));
+ LASSERT (conn->ksnc_type != SOCKNAL_CONN_NONE);
+ LASSERT (nipaddrs <= SOCKNAL_MAX_INTERFACES);
+
+ /* No need for getconnsock/putconnsock */
+ LASSERT (!conn->ksnc_closing);
- memset (&hdr, 0, sizeof (hdr));
- hmv->magic = __cpu_to_le32 (PORTALS_PROTO_MAGIC);
- hmv->version_major = __cpu_to_le16 (PORTALS_PROTO_VERSION_MAJOR);
- hmv->version_minor = __cpu_to_le16 (PORTALS_PROTO_VERSION_MINOR);
+ LASSERT (sizeof (*hmv) == sizeof (hdr.dest_nid));
+ hmv->magic = cpu_to_le32 (PORTALS_PROTO_MAGIC);
+ hmv->version_major = cpu_to_le16 (PORTALS_PROTO_VERSION_MAJOR);
+ hmv->version_minor = cpu_to_le16 (PORTALS_PROTO_VERSION_MINOR);
- hdr.src_nid = __cpu_to_le64 (ksocknal_lib.ni.nid);
- hdr.type = __cpu_to_le32 (PTL_MSG_HELLO);
+ hdr.src_nid = cpu_to_le64 (ksocknal_lib.libnal_ni.ni_pid.nid);
+ hdr.type = cpu_to_le32 (PTL_MSG_HELLO);
+ hdr.payload_length = cpu_to_le32 (nipaddrs * sizeof(*ipaddrs));
- hdr.msg.hello.type = __cpu_to_le32 (*type);
+ hdr.msg.hello.type = cpu_to_le32 (conn->ksnc_type);
hdr.msg.hello.incarnation =
- __cpu_to_le64 (ksocknal_data.ksnd_incarnation);
+ cpu_to_le64 (ksocknal_data.ksnd_incarnation);
- /* Assume sufficient socket buffering for this message */
- rc = ksocknal_sock_write (sock, &hdr, sizeof (hdr));
+ /* Receiver is eager */
+ rc = ksocknal_sock_write (sock, &hdr, sizeof(hdr));
if (rc != 0) {
- CERROR ("Error %d sending HELLO to "LPX64" %s\n",
- rc, *nid, portals_nid2str(SOCKNAL, *nid, ipbuf));
+ CERROR ("Error %d sending HELLO hdr to %u.%u.%u.%u/%d\n",
+ rc, HIPQUAD(conn->ksnc_ipaddr), conn->ksnc_port);
return (rc);
}
+
+ if (nipaddrs == 0)
+ return (0);
+
+ for (i = 0; i < nipaddrs; i++) {
+ ipaddrs[i] = __cpu_to_le32 (ipaddrs[i]);
+ }
+
+ rc = ksocknal_sock_write (sock, ipaddrs, nipaddrs * sizeof(*ipaddrs));
+ if (rc != 0)
+ CERROR ("Error %d sending HELLO payload (%d)"
+ " to %u.%u.%u.%u/%d\n", rc, nipaddrs,
+ HIPQUAD(conn->ksnc_ipaddr), conn->ksnc_port);
+ return (rc);
+}
+
+int
+ksocknal_invert_type(int type)
+{
+ switch (type)
+ {
+ case SOCKNAL_CONN_ANY:
+ case SOCKNAL_CONN_CONTROL:
+ return (type);
+ case SOCKNAL_CONN_BULK_IN:
+ return SOCKNAL_CONN_BULK_OUT;
+ case SOCKNAL_CONN_BULK_OUT:
+ return SOCKNAL_CONN_BULK_IN;
+ default:
+ return (SOCKNAL_CONN_NONE);
+ }
+}
+
+int
+ksocknal_recv_hello (ksock_conn_t *conn, ptl_nid_t *nid,
+ __u64 *incarnation, __u32 *ipaddrs)
+{
+ struct socket *sock = conn->ksnc_sock;
+ int rc;
+ int nips;
+ int i;
+ int type;
+ ptl_hdr_t hdr;
+ ptl_magicversion_t *hmv;
+
+ hmv = (ptl_magicversion_t *)&hdr.dest_nid;
+ LASSERT (sizeof (*hmv) == sizeof (hdr.dest_nid));
rc = ksocknal_sock_read (sock, hmv, sizeof (*hmv));
if (rc != 0) {
- CERROR ("Error %d reading HELLO from "LPX64" %s\n",
- rc, *nid, portals_nid2str(SOCKNAL, *nid, ipbuf));
+ CERROR ("Error %d reading HELLO from %u.%u.%u.%u\n",
+ rc, HIPQUAD(conn->ksnc_ipaddr));
return (rc);
}
- if (hmv->magic != __le32_to_cpu (PORTALS_PROTO_MAGIC)) {
- CERROR ("Bad magic %#08x (%#08x expected) from "LPX64" %s\n",
- __cpu_to_le32 (hmv->magic), PORTALS_PROTO_MAGIC, *nid,
- portals_nid2str(SOCKNAL, *nid, ipbuf));
+ if (hmv->magic != le32_to_cpu (PORTALS_PROTO_MAGIC)) {
+ CERROR ("Bad magic %#08x (%#08x expected) from %u.%u.%u.%u\n",
+ __cpu_to_le32 (hmv->magic), PORTALS_PROTO_MAGIC,
+ HIPQUAD(conn->ksnc_ipaddr));
return (-EPROTO);
}
- if (hmv->version_major != __cpu_to_le16 (PORTALS_PROTO_VERSION_MAJOR) ||
- hmv->version_minor != __cpu_to_le16 (PORTALS_PROTO_VERSION_MINOR)) {
+ if (hmv->version_major != cpu_to_le16 (PORTALS_PROTO_VERSION_MAJOR) ||
+ hmv->version_minor != cpu_to_le16 (PORTALS_PROTO_VERSION_MINOR)) {
CERROR ("Incompatible protocol version %d.%d (%d.%d expected)"
- " from "LPX64" %s\n",
- __le16_to_cpu (hmv->version_major),
- __le16_to_cpu (hmv->version_minor),
+ " from %u.%u.%u.%u\n",
+ le16_to_cpu (hmv->version_major),
+ le16_to_cpu (hmv->version_minor),
PORTALS_PROTO_VERSION_MAJOR,
PORTALS_PROTO_VERSION_MINOR,
- *nid, portals_nid2str(SOCKNAL, *nid, ipbuf));
+ HIPQUAD(conn->ksnc_ipaddr));
return (-EPROTO);
}
-#if (PORTALS_PROTO_VERSION_MAJOR != 0)
-# error "This code only understands protocol version 0.x"
+#if (PORTALS_PROTO_VERSION_MAJOR != 1)
+# error "This code only understands protocol version 1.x"
#endif
- /* version 0 sends magic/version as the dest_nid of a 'hello' header,
- * so read the rest of it in now... */
+ /* version 1 sends magic/version as the dest_nid of a 'hello'
+ * header, followed by payload full of interface IP addresses.
+ * Read the rest of it in now... */
rc = ksocknal_sock_read (sock, hmv + 1, sizeof (hdr) - sizeof (*hmv));
if (rc != 0) {
- CERROR ("Error %d reading rest of HELLO hdr from "LPX64" %s\n",
- rc, *nid, portals_nid2str(SOCKNAL, *nid, ipbuf));
+ CERROR ("Error %d reading rest of HELLO hdr from %u.%u.%u.%u\n",
+ rc, HIPQUAD(conn->ksnc_ipaddr));
return (rc);
}
/* ...and check we got what we expected */
- if (hdr.type != __cpu_to_le32 (PTL_MSG_HELLO) ||
- hdr.payload_length != __cpu_to_le32 (0)) {
- CERROR ("Expecting a HELLO hdr with 0 payload,"
- " but got type %d with %d payload from "LPX64" %s\n",
- __le32_to_cpu (hdr.type),
- __le32_to_cpu (hdr.payload_length), *nid,
- portals_nid2str(SOCKNAL, *nid, ipbuf));
+ if (hdr.type != cpu_to_le32 (PTL_MSG_HELLO)) {
+ CERROR ("Expecting a HELLO hdr,"
+ " but got type %d from %u.%u.%u.%u\n",
+ le32_to_cpu (hdr.type),
+ HIPQUAD(conn->ksnc_ipaddr));
return (-EPROTO);
}
- if (__le64_to_cpu(hdr.src_nid) == PTL_NID_ANY) {
- CERROR("Expecting a HELLO hdr with a NID, but got PTL_NID_ANY\n");
+ if (le64_to_cpu(hdr.src_nid) == PTL_NID_ANY) {
+ CERROR("Expecting a HELLO hdr with a NID, but got PTL_NID_ANY"
+ "from %u.%u.%u.%u\n", HIPQUAD(conn->ksnc_ipaddr));
return (-EPROTO);
}
if (*nid == PTL_NID_ANY) { /* don't know peer's nid yet */
- *nid = __le64_to_cpu(hdr.src_nid);
- } else if (*nid != __le64_to_cpu (hdr.src_nid)) {
- CERROR ("Connected to nid "LPX64" %s, but expecting "LPX64" %s\n",
- __le64_to_cpu (hdr.src_nid),
- portals_nid2str(SOCKNAL,
- __le64_to_cpu(hdr.src_nid),
- ipbuf),
- *nid, portals_nid2str(SOCKNAL, *nid, ipbuf2));
+ *nid = le64_to_cpu(hdr.src_nid);
+ } else if (*nid != le64_to_cpu (hdr.src_nid)) {
+ CERROR ("Connected to nid "LPX64"@%u.%u.%u.%u "
+ "but expecting "LPX64"\n",
+ le64_to_cpu (hdr.src_nid),
+ HIPQUAD(conn->ksnc_ipaddr), *nid);
return (-EPROTO);
}
- if (*type == SOCKNAL_CONN_NONE) {
+ type = __le32_to_cpu(hdr.msg.hello.type);
+
+ if (conn->ksnc_type == SOCKNAL_CONN_NONE) {
/* I've accepted this connection; peer determines type */
- *type = __le32_to_cpu(hdr.msg.hello.type);
- switch (*type) {
- case SOCKNAL_CONN_ANY:
- case SOCKNAL_CONN_CONTROL:
- break;
- case SOCKNAL_CONN_BULK_IN:
- *type = SOCKNAL_CONN_BULK_OUT;
- break;
- case SOCKNAL_CONN_BULK_OUT:
- *type = SOCKNAL_CONN_BULK_IN;
- break;
- default:
- CERROR ("Unexpected type %d from "LPX64" %s\n",
- *type, *nid,
- portals_nid2str(SOCKNAL, *nid, ipbuf));
+ conn->ksnc_type = ksocknal_invert_type(type);
+ if (conn->ksnc_type == SOCKNAL_CONN_NONE) {
+ CERROR ("Unexpected type %d from "LPX64"@%u.%u.%u.%u\n",
+ type, *nid, HIPQUAD(conn->ksnc_ipaddr));
return (-EPROTO);
}
- } else if (__le32_to_cpu(hdr.msg.hello.type) != SOCKNAL_CONN_NONE) {
- CERROR ("Mismatched types: me %d "LPX64" %s %d\n",
- *type, *nid, portals_nid2str(SOCKNAL, *nid, ipbuf),
- __le32_to_cpu(hdr.msg.hello.type));
+ } else if (ksocknal_invert_type(type) != conn->ksnc_type) {
+ CERROR ("Mismatched types: me %d, "LPX64"@%u.%u.%u.%u %d\n",
+ conn->ksnc_type, *nid, HIPQUAD(conn->ksnc_ipaddr),
+ le32_to_cpu(hdr.msg.hello.type));
return (-EPROTO);
}
- *incarnation = __le64_to_cpu(hdr.msg.hello.incarnation);
+ *incarnation = le64_to_cpu(hdr.msg.hello.incarnation);
- return (0);
+ nips = __le32_to_cpu (hdr.payload_length) / sizeof (__u32);
+
+ if (nips > SOCKNAL_MAX_INTERFACES ||
+ nips * sizeof(__u32) != __le32_to_cpu (hdr.payload_length)) {
+ CERROR("Bad payload length %d from "LPX64"@%u.%u.%u.%u\n",
+ __le32_to_cpu (hdr.payload_length),
+ *nid, HIPQUAD(conn->ksnc_ipaddr));
+ }
+
+ if (nips == 0)
+ return (0);
+
+ rc = ksocknal_sock_read (sock, ipaddrs, nips * sizeof(*ipaddrs));
+ if (rc != 0) {
+ CERROR ("Error %d reading IPs from "LPX64"@%u.%u.%u.%u\n",
+ rc, *nid, HIPQUAD(conn->ksnc_ipaddr));
+ return (rc);
+ }
+
+ for (i = 0; i < nips; i++) {
+ ipaddrs[i] = __le32_to_cpu(ipaddrs[i]);
+
+ if (ipaddrs[i] == 0) {
+ CERROR("Zero IP[%d] from "LPX64"@%u.%u.%u.%u\n",
+ i, *nid, HIPQUAD(conn->ksnc_ipaddr));
+ return (-EPROTO);
+ }
+ }
+
+ return (nips);
+}
+
+int
+ksocknal_get_conn_tunables (ksock_conn_t *conn, int *txmem, int *rxmem, int *nagle)
+{
+ mm_segment_t oldmm = get_fs ();
+ struct socket *sock = conn->ksnc_sock;
+ int len;
+ int rc;
+
+ rc = ksocknal_getconnsock (conn);
+ if (rc != 0) {
+ LASSERT (conn->ksnc_closing);
+ *txmem = *rxmem = *nagle = 0;
+ return (-ESHUTDOWN);
+ }
+
+ set_fs (KERNEL_DS);
+
+ len = sizeof(*txmem);
+ rc = sock_getsockopt(sock, SOL_SOCKET, SO_SNDBUF,
+ (char *)txmem, &len);
+ if (rc == 0) {
+ len = sizeof(*rxmem);
+ rc = sock_getsockopt(sock, SOL_SOCKET, SO_RCVBUF,
+ (char *)rxmem, &len);
+ }
+ if (rc == 0) {
+ len = sizeof(*nagle);
+ rc = sock->ops->getsockopt(sock, SOL_TCP, TCP_NODELAY,
+ (char *)nagle, &len);
+ }
+
+ set_fs (oldmm);
+ ksocknal_putconnsock (conn);
+
+ if (rc == 0)
+ *nagle = !*nagle;
+ else
+ *txmem = *rxmem = *nagle = 0;
+
+ return (rc);
}
int
mm_segment_t oldmm = get_fs ();
int rc;
int option;
+ int keep_idle;
+ int keep_intvl;
+ int keep_count;
+ int do_keepalive;
struct linger linger;
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
sock->sk->sk_allocation = GFP_NOFS;
-#else
- sock->sk->allocation = GFP_NOFS;
-#endif
/* Ensure this socket aborts active sends immediately when we close
* it. */
return (rc);
}
-#if SOCKNAL_USE_KEEPALIVES
- /* Keepalives: If 3/4 of the timeout elapses, start probing every
- * second until the timeout elapses. */
+ if (!ksocknal_tunables.ksnd_nagle) {
+ option = 1;
+
+ set_fs (KERNEL_DS);
+ rc = sock->ops->setsockopt (sock, SOL_TCP, TCP_NODELAY,
+ (char *)&option, sizeof (option));
+ set_fs (oldmm);
+ if (rc != 0) {
+ CERROR ("Can't disable nagle: %d\n", rc);
+ return (rc);
+ }
+ }
+
+ if (ksocknal_tunables.ksnd_buffer_size > 0) {
+ option = ksocknal_tunables.ksnd_buffer_size;
+
+ set_fs (KERNEL_DS);
+ rc = sock_setsockopt (sock, SOL_SOCKET, SO_SNDBUF,
+ (char *)&option, sizeof (option));
+ set_fs (oldmm);
+ if (rc != 0) {
+ CERROR ("Can't set send buffer %d: %d\n",
+ option, rc);
+ return (rc);
+ }
+
+ set_fs (KERNEL_DS);
+ rc = sock_setsockopt (sock, SOL_SOCKET, SO_RCVBUF,
+ (char *)&option, sizeof (option));
+ set_fs (oldmm);
+ if (rc != 0) {
+ CERROR ("Can't set receive buffer %d: %d\n",
+ option, rc);
+ return (rc);
+ }
+ }
+
+ /* snapshot tunables */
+ keep_idle = ksocknal_tunables.ksnd_keepalive_idle;
+ keep_count = ksocknal_tunables.ksnd_keepalive_count;
+ keep_intvl = ksocknal_tunables.ksnd_keepalive_intvl;
+
+ do_keepalive = (keep_idle > 0 && keep_count > 0 && keep_intvl > 0);
- option = (ksocknal_tunables.ksnd_io_timeout * 3) / 4;
+ option = (do_keepalive ? 1 : 0);
set_fs (KERNEL_DS);
- rc = sock->ops->setsockopt (sock, SOL_TCP, TCP_KEEPIDLE,
- (char *)&option, sizeof (option));
+ rc = sock_setsockopt (sock, SOL_SOCKET, SO_KEEPALIVE,
+ (char *)&option, sizeof (option));
set_fs (oldmm);
if (rc != 0) {
- CERROR ("Can't set TCP_KEEPIDLE: %d\n", rc);
+ CERROR ("Can't set SO_KEEPALIVE: %d\n", rc);
return (rc);
}
-
- option = 1;
+
+ if (!do_keepalive)
+ return (0);
+
set_fs (KERNEL_DS);
- rc = sock->ops->setsockopt (sock, SOL_TCP, TCP_KEEPINTVL,
- (char *)&option, sizeof (option));
+ rc = sock->ops->setsockopt (sock, SOL_TCP, TCP_KEEPIDLE,
+ (char *)&keep_idle, sizeof (keep_idle));
set_fs (oldmm);
if (rc != 0) {
- CERROR ("Can't set TCP_KEEPINTVL: %d\n", rc);
+ CERROR ("Can't set TCP_KEEPIDLE: %d\n", rc);
return (rc);
}
-
- option = ksocknal_tunables.ksnd_io_timeout / 4;
+
set_fs (KERNEL_DS);
- rc = sock->ops->setsockopt (sock, SOL_TCP, TCP_KEEPCNT,
- (char *)&option, sizeof (option));
+ rc = sock->ops->setsockopt (sock, SOL_TCP, TCP_KEEPINTVL,
+ (char *)&keep_intvl, sizeof (keep_intvl));
set_fs (oldmm);
if (rc != 0) {
CERROR ("Can't set TCP_KEEPINTVL: %d\n", rc);
return (rc);
}
- option = 1;
set_fs (KERNEL_DS);
- rc = sock_setsockopt (sock, SOL_SOCKET, SO_KEEPALIVE,
- (char *)&option, sizeof (option));
+ rc = sock->ops->setsockopt (sock, SOL_TCP, TCP_KEEPCNT,
+ (char *)&keep_count, sizeof (keep_count));
set_fs (oldmm);
if (rc != 0) {
- CERROR ("Can't set SO_KEEPALIVE: %d\n", rc);
+ CERROR ("Can't set TCP_KEEPCNT: %d\n", rc);
return (rc);
}
-#endif
+
return (0);
}
-int
-ksocknal_connect_peer (ksock_route_t *route, int type)
+static int
+ksocknal_connect_sock(struct socket **sockp, int *may_retry,
+ ksock_route_t *route, int local_port)
{
- struct sockaddr_in peer_addr;
- mm_segment_t oldmm = get_fs();
- struct timeval tv;
- int fd;
+ struct sockaddr_in locaddr;
+ struct sockaddr_in srvaddr;
struct socket *sock;
int rc;
- char ipbuf[PTL_NALFMT_SIZE];
+ int option;
+ mm_segment_t oldmm = get_fs();
+ struct timeval tv;
+
+ memset(&locaddr, 0, sizeof(locaddr));
+ locaddr.sin_family = AF_INET;
+ locaddr.sin_port = htons(local_port);
+ locaddr.sin_addr.s_addr =
+ (route->ksnr_myipaddr != 0) ? htonl(route->ksnr_myipaddr)
+ : INADDR_ANY;
+
+ memset (&srvaddr, 0, sizeof (srvaddr));
+ srvaddr.sin_family = AF_INET;
+ srvaddr.sin_port = htons (route->ksnr_port);
+ srvaddr.sin_addr.s_addr = htonl (route->ksnr_ipaddr);
+
+ *may_retry = 0;
rc = sock_create (PF_INET, SOCK_STREAM, 0, &sock);
+ *sockp = sock;
if (rc != 0) {
CERROR ("Can't create autoconnect socket: %d\n", rc);
return (rc);
* from userspace. And we actually need the sock->file refcounting
* that this gives you :) */
- fd = sock_map_fd (sock);
- if (fd < 0) {
+ rc = sock_map_fd (sock);
+ if (rc < 0) {
sock_release (sock);
- CERROR ("sock_map_fd error %d\n", fd);
- return (fd);
+ CERROR ("sock_map_fd error %d\n", rc);
+ return (rc);
}
- /* NB the fd now owns the ref on sock->file */
+ /* NB the file descriptor (rc) now owns the ref on sock->file */
LASSERT (sock->file != NULL);
LASSERT (file_count(sock->file) == 1);
+ get_file(sock->file); /* extra ref makes sock->file */
+ sys_close(rc); /* survive this close */
+
+ /* Still got a single ref on sock->file */
+ LASSERT (file_count(sock->file) == 1);
+
/* Set the socket timeouts, so our connection attempt completes in
* finite time */
tv.tv_sec = ksocknal_tunables.ksnd_io_timeout;
if (rc != 0) {
CERROR ("Can't set send timeout %d: %d\n",
ksocknal_tunables.ksnd_io_timeout, rc);
- goto out;
+ goto failed;
}
set_fs (KERNEL_DS);
if (rc != 0) {
CERROR ("Can't set receive timeout %d: %d\n",
ksocknal_tunables.ksnd_io_timeout, rc);
- goto out;
+ goto failed;
}
- {
- int option = 1;
-
- set_fs (KERNEL_DS);
- rc = sock->ops->setsockopt (sock, SOL_TCP, TCP_NODELAY,
- (char *)&option, sizeof (option));
- set_fs (oldmm);
- if (rc != 0) {
- CERROR ("Can't disable nagle: %d\n", rc);
- goto out;
- }
+ set_fs (KERNEL_DS);
+ option = 1;
+ rc = sock_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR,
+ (char *)&option, sizeof (option));
+ set_fs (oldmm);
+ if (rc != 0) {
+ CERROR("Can't set SO_REUSEADDR for socket: %d\n", rc);
+ goto failed;
}
-
- if (route->ksnr_buffer_size != 0) {
- int option = route->ksnr_buffer_size;
-
- set_fs (KERNEL_DS);
- rc = sock_setsockopt (sock, SOL_SOCKET, SO_SNDBUF,
- (char *)&option, sizeof (option));
- set_fs (oldmm);
- if (rc != 0) {
- CERROR ("Can't set send buffer %d: %d\n",
- route->ksnr_buffer_size, rc);
- goto out;
- }
- set_fs (KERNEL_DS);
- rc = sock_setsockopt (sock, SOL_SOCKET, SO_RCVBUF,
- (char *)&option, sizeof (option));
- set_fs (oldmm);
- if (rc != 0) {
- CERROR ("Can't set receive buffer %d: %d\n",
- route->ksnr_buffer_size, rc);
- goto out;
- }
+ rc = sock->ops->bind(sock,
+ (struct sockaddr *)&locaddr, sizeof(locaddr));
+ if (rc == -EADDRINUSE) {
+ CDEBUG(D_NET, "Port %d already in use\n", local_port);
+ *may_retry = 1;
+ goto failed;
}
-
- memset (&peer_addr, 0, sizeof (peer_addr));
- peer_addr.sin_family = AF_INET;
- peer_addr.sin_port = htons (route->ksnr_port);
- peer_addr.sin_addr.s_addr = htonl (route->ksnr_ipaddr);
-
- rc = sock->ops->connect (sock, (struct sockaddr *)&peer_addr,
- sizeof (peer_addr), sock->file->f_flags);
if (rc != 0) {
- CERROR ("Error %d connecting to "LPX64" %s\n", rc,
- route->ksnr_peer->ksnp_nid,
- portals_nid2str(SOCKNAL,
- route->ksnr_peer->ksnp_nid,
- ipbuf));
- goto out;
+ CERROR("Error trying to bind to reserved port %d: %d\n",
+ local_port, rc);
+ goto failed;
}
+
+ rc = sock->ops->connect(sock,
+ (struct sockaddr *)&srvaddr, sizeof(srvaddr),
+ sock->file->f_flags);
+ if (rc == 0)
+ return 0;
+
+ /* EADDRNOTAVAIL probably means we're already connected to the same
+ * peer/port on the same local port on a differently typed
+ * connection. Let our caller retry with a different local
+ * port... */
+ *may_retry = (rc == -EADDRNOTAVAIL);
+
+ CDEBUG(*may_retry ? D_NET : D_ERROR,
+ "Error %d connecting %u.%u.%u.%u/%d -> %u.%u.%u.%u/%d\n", rc,
+ HIPQUAD(route->ksnr_myipaddr), local_port,
+ HIPQUAD(route->ksnr_ipaddr), route->ksnr_port);
+
+ failed:
+ fput(sock->file);
+ return rc;
+}
+
+int
+ksocknal_connect_peer (ksock_route_t *route, int type)
+{
+ struct socket *sock;
+ int rc;
+ int port;
+ int may_retry;
- rc = ksocknal_create_conn (route, sock, route->ksnr_irq_affinity, type);
- if (rc == 0) {
- /* Take an extra ref on sock->file to compensate for the
- * upcoming close which will lose fd's ref on it. */
- get_file (sock->file);
+ /* Iterate through reserved ports. When typed connections are
+ * used, we will need to bind to multiple ports, but we only know
+ * this at connect time. But, by that time we've already called
+ * bind() so we need a new socket. */
+
+ for (port = 1023; port > 512; --port) {
+
+ rc = ksocknal_connect_sock(&sock, &may_retry, route, port);
+
+ if (rc == 0) {
+ rc = ksocknal_create_conn(route, sock, type);
+ fput(sock->file);
+ return rc;
+ }
+
+ if (!may_retry)
+ return rc;
}
- out:
- sys_close (fd);
- return (rc);
+ CERROR("Out of ports trying to bind to a reserved port\n");
+ return (-EADDRINUSE);
}
void
LASSERT (type < SOCKNAL_CONN_NTYPES);
rc = ksocknal_connect_peer (route, type);
-
if (rc != 0)
break;
} while (!list_empty (&peer->ksnp_tx_queue));
}
- /* make this route least-favourite for re-selection */
+#if 0 /* irrelevent with only eager routes */
if (!route->ksnr_deleted) {
+ /* make this route least-favourite for re-selection */
list_del(&route->ksnr_list);
list_add_tail(&route->ksnr_list, &peer->ksnp_routes);
}
-
+#endif
write_unlock_irqrestore (&ksocknal_data.ksnd_global_lock, flags);
while (!list_empty (&zombies)) {
tx = list_entry (zombies.next, ksock_tx_t, tx_list);
CERROR ("Deleting packet type %d len %d ("LPX64" %s->"LPX64" %s)\n",
- NTOH__u32 (tx->tx_hdr->type),
- NTOH__u32 (tx->tx_hdr->payload_length),
- NTOH__u64 (tx->tx_hdr->src_nid),
+ le32_to_cpu (tx->tx_hdr->type),
+ le32_to_cpu (tx->tx_hdr->payload_length),
+ le64_to_cpu (tx->tx_hdr->src_nid),
portals_nid2str(SOCKNAL,
- NTOH__u64(tx->tx_hdr->src_nid),
+ le64_to_cpu(tx->tx_hdr->src_nid),
ipbuf),
- NTOH__u64 (tx->tx_hdr->dest_nid),
+ le64_to_cpu (tx->tx_hdr->dest_nid),
portals_nid2str(SOCKNAL,
- NTOH__u64(tx->tx_hdr->src_nid),
+ le64_to_cpu(tx->tx_hdr->src_nid),
ipbuf2));
list_del (&tx->tx_list);
if (!list_empty (&ksocknal_data.ksnd_autoconnectd_routes)) {
route = list_entry (ksocknal_data.ksnd_autoconnectd_routes.next,
ksock_route_t, ksnr_connect_list);
-
+
list_del (&route->ksnr_connect_list);
spin_unlock_irqrestore (&ksocknal_data.ksnd_autoconnectd_lock, flags);
ksocknal_autoconnect (route);
ksocknal_put_route (route);
- spin_lock_irqsave (&ksocknal_data.ksnd_autoconnectd_lock, flags);
+ spin_lock_irqsave(&ksocknal_data.ksnd_autoconnectd_lock,
+ flags);
continue;
}
-
- spin_unlock_irqrestore (&ksocknal_data.ksnd_autoconnectd_lock, flags);
- rc = wait_event_interruptible (ksocknal_data.ksnd_autoconnectd_waitq,
- ksocknal_data.ksnd_shuttingdown ||
- !list_empty (&ksocknal_data.ksnd_autoconnectd_routes));
+ spin_unlock_irqrestore(&ksocknal_data.ksnd_autoconnectd_lock,
+ flags);
- spin_lock_irqsave (&ksocknal_data.ksnd_autoconnectd_lock, flags);
+ rc = wait_event_interruptible(ksocknal_data.ksnd_autoconnectd_waitq,
+ ksocknal_data.ksnd_shuttingdown ||
+ !list_empty(&ksocknal_data.ksnd_autoconnectd_routes));
+
+ spin_lock_irqsave(&ksocknal_data.ksnd_autoconnectd_lock, flags);
}
spin_unlock_irqrestore (&ksocknal_data.ksnd_autoconnectd_lock, flags);
/* We're called with a shared lock on ksnd_global_lock */
ksock_conn_t *conn;
struct list_head *ctmp;
- ksock_sched_t *sched;
list_for_each (ctmp, &peer->ksnp_conns) {
conn = list_entry (ctmp, ksock_conn_t, ksnc_list);
- sched = conn->ksnc_scheduler;
/* Don't need the {get,put}connsock dance to deref ksnc_sock... */
LASSERT (!conn->ksnc_closing);
-
+
+ if (conn->ksnc_sock->sk->sk_err != 0) {
+ /* Something (e.g. failed keepalive) set the socket error */
+ atomic_inc (&conn->ksnc_refcount);
+ CERROR ("Socket error %d: "LPX64" %p %d.%d.%d.%d\n",
+ conn->ksnc_sock->sk->sk_err, peer->ksnp_nid,
+ conn, HIPQUAD(conn->ksnc_ipaddr));
+ return (conn);
+ }
+
if (conn->ksnc_rx_started &&
time_after_eq (jiffies, conn->ksnc_rx_deadline)) {
/* Timed out incomplete incoming message */
atomic_inc (&conn->ksnc_refcount);
CERROR ("Timed out RX from "LPX64" %p %d.%d.%d.%d\n",
- peer->ksnp_nid, conn, HIPQUAD(conn->ksnc_ipaddr));
+ peer->ksnp_nid,conn,HIPQUAD(conn->ksnc_ipaddr));
return (conn);
}
-
+
if ((!list_empty (&conn->ksnc_tx_queue) ||
conn->ksnc_sock->sk->sk_wmem_queued != 0) &&
time_after_eq (jiffies, conn->ksnc_tx_deadline)) {
- /* Timed out messages queued for sending, or
- * messages buffered in the socket's send buffer */
+ /* Timed out messages queued for sending or
+ * buffered in the socket's send buffer */
atomic_inc (&conn->ksnc_refcount);
- CERROR ("Timed out TX to "LPX64" %s%d %p %d.%d.%d.%d\n",
- peer->ksnp_nid,
+ CERROR ("Timed out TX to "LPX64" %s%d %p %d.%d.%d.%d\n",
+ peer->ksnp_nid,
list_empty (&conn->ksnc_tx_queue) ? "" : "Q ",
conn->ksnc_sock->sk->sk_wmem_queued, conn,
HIPQUAD(conn->ksnc_ipaddr));
return (0);
}
-nal_cb_t ksocknal_lib = {
- nal_data: &ksocknal_data, /* NAL private data */
- cb_send: ksocknal_send,
- cb_send_pages: ksocknal_send_pages,
- cb_recv: ksocknal_recv,
- cb_recv_pages: ksocknal_recv_pages,
- cb_read: ksocknal_read,
- cb_write: ksocknal_write,
- cb_malloc: ksocknal_malloc,
- cb_free: ksocknal_free,
- cb_printf: ksocknal_printf,
- cb_cli: ksocknal_cli,
- cb_sti: ksocknal_sti,
- cb_callback: ksocknal_callback,
- cb_dist: ksocknal_dist
+lib_nal_t ksocknal_lib = {
+ libnal_data: &ksocknal_data, /* NAL private data */
+ libnal_send: ksocknal_send,
+ libnal_send_pages: ksocknal_send_pages,
+ libnal_recv: ksocknal_recv,
+ libnal_recv_pages: ksocknal_recv_pages,
+ libnal_dist: ksocknal_dist
};
git://git.whamcloud.com / fs / lustre-release.git / blobdiff