*
*/
-#include "iibnal.h"
+#include "iiblnd.h"
-/*
- * LIB functions follow
- *
- */
-static void
-kibnal_schedule_tx_done (kib_tx_t *tx)
+void
+hexdump(char *string, void *ptr, int len)
{
- unsigned long flags;
+ unsigned char *c = ptr;
+ int i;
+
+ return;
- spin_lock_irqsave (&kibnal_data.kib_sched_lock, flags);
+ if (len < 0 || len > 2048) {
+ printk("XXX what the hell? %d\n",len);
+ return;
+ }
- list_add_tail(&tx->tx_list, &kibnal_data.kib_sched_txq);
- wake_up (&kibnal_data.kib_sched_waitq);
+ printk("%d bytes of '%s' from 0x%p\n", len, string, ptr);
- spin_unlock_irqrestore(&kibnal_data.kib_sched_lock, flags);
+ for (i = 0; i < len;) {
+ printk("%02x",*(c++));
+ i++;
+ if (!(i & 15)) {
+ printk("\n");
+ } else if (!(i&1)) {
+ printk(" ");
+ }
+ }
+
+ if(len & 15) {
+ printk("\n");
+ }
}
-static void
+void
kibnal_tx_done (kib_tx_t *tx)
{
- ptl_err_t ptlrc = (tx->tx_status == 0) ? PTL_OK : PTL_FAIL;
- unsigned long flags;
- int i;
- FSTATUS frc;
-
- LASSERT (tx->tx_sending == 0); /* mustn't be awaiting callback */
- LASSERT (!tx->tx_passive_rdma_wait); /* mustn't be awaiting RDMA */
+ lnet_msg_t *lntmsg[2];
+ int rc = tx->tx_status;
+ int i;
- switch (tx->tx_mapped) {
- default:
- LBUG();
+ LASSERT (!in_interrupt());
+ LASSERT (!tx->tx_queued); /* mustn't be queued for sending */
+ LASSERT (tx->tx_sending == 0); /* mustn't be awaiting sent callback */
+ LASSERT (!tx->tx_waiting); /* mustn't be awaiting peer response */
- case KIB_TX_UNMAPPED:
- break;
+#if IBNAL_USE_FMR
+ /* Handle unmapping if required */
+#endif
+ /* tx may have up to 2 lnet msgs to finalise */
+ lntmsg[0] = tx->tx_lntmsg[0]; tx->tx_lntmsg[0] = NULL;
+ lntmsg[1] = tx->tx_lntmsg[1]; tx->tx_lntmsg[1] = NULL;
+
+ if (tx->tx_conn != NULL) {
+ kibnal_conn_decref(tx->tx_conn);
+ tx->tx_conn = NULL;
+ }
- case KIB_TX_MAPPED:
- if (in_interrupt()) {
- /* can't deregister memory in IRQ context... */
- kibnal_schedule_tx_done(tx);
- return;
- }
- frc = iibt_deregister_memory(tx->tx_md.md_handle);
- LASSERT (frc == FSUCCESS);
- tx->tx_mapped = KIB_TX_UNMAPPED;
- break;
+ tx->tx_nwrq = 0;
+ tx->tx_status = 0;
-#if IBNAL_FMR
- case KIB_TX_MAPPED_FMR:
- if (in_interrupt() && tx->tx_status != 0) {
- /* can't flush FMRs in IRQ context... */
- kibnal_schedule_tx_done(tx);
- return;
- }
+ spin_lock(&kibnal_data.kib_tx_lock);
- rc = ib_fmr_deregister(tx->tx_md.md_handle.fmr);
- LASSERT (rc == 0);
+ list_add (&tx->tx_list, &kibnal_data.kib_idle_txs);
- if (tx->tx_status != 0)
- ib_fmr_pool_force_flush(kibnal_data.kib_fmr_pool);
- tx->tx_mapped = KIB_TX_UNMAPPED;
- break;
-#endif
- }
+ spin_unlock(&kibnal_data.kib_tx_lock);
+ /* delay finalize until my descs have been freed */
for (i = 0; i < 2; i++) {
- /* tx may have up to 2 libmsgs to finalise */
- if (tx->tx_libmsg[i] == NULL)
+ if (lntmsg[i] == NULL)
continue;
- lib_finalize (&kibnal_lib, NULL, tx->tx_libmsg[i], ptlrc);
- tx->tx_libmsg[i] = NULL;
+ lnet_finalize (kibnal_data.kib_ni, lntmsg[i], rc);
}
+}
+
+kib_tx_t *
+kibnal_get_idle_tx (void)
+{
+ kib_tx_t *tx;
- if (tx->tx_conn != NULL) {
- kibnal_put_conn (tx->tx_conn);
- tx->tx_conn = NULL;
+ spin_lock(&kibnal_data.kib_tx_lock);
+
+ if (list_empty (&kibnal_data.kib_idle_txs)) {
+ spin_unlock(&kibnal_data.kib_tx_lock);
+ return NULL;
}
- tx->tx_nsp = 0;
- tx->tx_passive_rdma = 0;
- tx->tx_status = 0;
+ tx = list_entry (kibnal_data.kib_idle_txs.next, kib_tx_t, tx_list);
+ list_del (&tx->tx_list);
- spin_lock_irqsave (&kibnal_data.kib_tx_lock, flags);
+ /* Allocate a new completion cookie. It might not be needed,
+ * but we've got a lock right now and we're unlikely to
+ * wrap... */
+ tx->tx_cookie = kibnal_data.kib_next_tx_cookie++;
- if (tx->tx_isnblk) {
- list_add_tail (&tx->tx_list, &kibnal_data.kib_idle_nblk_txs);
- } else {
- list_add_tail (&tx->tx_list, &kibnal_data.kib_idle_txs);
- wake_up (&kibnal_data.kib_idle_tx_waitq);
- }
+ spin_unlock(&kibnal_data.kib_tx_lock);
- spin_unlock_irqrestore (&kibnal_data.kib_tx_lock, flags);
+ LASSERT (tx->tx_nwrq == 0);
+ LASSERT (!tx->tx_queued);
+ LASSERT (tx->tx_sending == 0);
+ LASSERT (!tx->tx_waiting);
+ LASSERT (tx->tx_status == 0);
+ LASSERT (tx->tx_conn == NULL);
+ LASSERT (tx->tx_lntmsg[0] == NULL);
+ LASSERT (tx->tx_lntmsg[1] == NULL);
+
+ return tx;
}
-static kib_tx_t *
-kibnal_get_idle_tx (int may_block)
+int
+kibnal_post_rx (kib_rx_t *rx, int credit, int rsrvd_credit)
{
- unsigned long flags;
- kib_tx_t *tx = NULL;
- ENTRY;
-
- for (;;) {
- spin_lock_irqsave (&kibnal_data.kib_tx_lock, flags);
+ kib_conn_t *conn = rx->rx_conn;
+ int rc = 0;
+ FSTATUS frc;
- /* "normal" descriptor is free */
- if (!list_empty (&kibnal_data.kib_idle_txs)) {
- tx = list_entry (kibnal_data.kib_idle_txs.next,
- kib_tx_t, tx_list);
- break;
- }
+ LASSERT (!in_interrupt());
+ /* old peers don't reserve rxs for RDMA replies */
+ LASSERT (!rsrvd_credit ||
+ conn->ibc_version != IBNAL_MSG_VERSION_RDMAREPLYNOTRSRVD);
+
+ rx->rx_gl = (IB_LOCAL_DATASEGMENT) {
+ .Address = rx->rx_hca_msg,
+ .Lkey = kibnal_data.kib_whole_mem.md_lkey,
+ .Length = IBNAL_MSG_SIZE,
+ };
- if (!may_block) {
- /* may dip into reserve pool */
- if (list_empty (&kibnal_data.kib_idle_nblk_txs)) {
- CERROR ("reserved tx desc pool exhausted\n");
- break;
- }
+ rx->rx_wrq = (IB_WORK_REQ2) {
+ .Next = NULL,
+ .WorkReqId = kibnal_ptr2wreqid(rx, IBNAL_WID_RX),
+ .MessageLen = IBNAL_MSG_SIZE,
+ .DSList = &rx->rx_gl,
+ .DSListDepth = 1,
+ .Operation = WROpRecv,
+ };
- tx = list_entry (kibnal_data.kib_idle_nblk_txs.next,
- kib_tx_t, tx_list);
- break;
- }
+ LASSERT (conn->ibc_state >= IBNAL_CONN_CONNECTING);
+ LASSERT (rx->rx_nob >= 0); /* not posted */
- /* block for idle tx */
- spin_unlock_irqrestore (&kibnal_data.kib_tx_lock, flags);
+ CDEBUG(D_NET, "posting rx [%d %x "LPX64"]\n",
+ rx->rx_wrq.DSList->Length,
+ rx->rx_wrq.DSList->Lkey,
+ rx->rx_wrq.DSList->Address);
- wait_event (kibnal_data.kib_idle_tx_waitq,
- !list_empty (&kibnal_data.kib_idle_txs) ||
- kibnal_data.kib_shutdown);
+ if (conn->ibc_state > IBNAL_CONN_ESTABLISHED) {
+ /* No more posts for this rx; so lose its ref */
+ kibnal_conn_decref(conn);
+ return 0;
}
+
+ rx->rx_nob = -1; /* flag posted */
+ mb();
- if (tx != NULL) {
- list_del (&tx->tx_list);
+ frc = iba_post_recv2(conn->ibc_qp, &rx->rx_wrq, NULL);
+ if (frc == FSUCCESS) {
+ if (credit || rsrvd_credit) {
+ spin_lock(&conn->ibc_lock);
- /* Allocate a new passive RDMA completion cookie. It might
- * not be needed, but we've got a lock right now and we're
- * unlikely to wrap... */
- tx->tx_passive_rdma_cookie = kibnal_data.kib_next_tx_cookie++;
+ if (credit)
+ conn->ibc_outstanding_credits++;
+ if (rsrvd_credit)
+ conn->ibc_reserved_credits++;
- LASSERT (tx->tx_mapped == KIB_TX_UNMAPPED);
- LASSERT (tx->tx_nsp == 0);
- LASSERT (tx->tx_sending == 0);
- LASSERT (tx->tx_status == 0);
- LASSERT (tx->tx_conn == NULL);
- LASSERT (!tx->tx_passive_rdma);
- LASSERT (!tx->tx_passive_rdma_wait);
- LASSERT (tx->tx_libmsg[0] == NULL);
- LASSERT (tx->tx_libmsg[1] == NULL);
- }
+ spin_unlock(&conn->ibc_lock);
- spin_unlock_irqrestore (&kibnal_data.kib_tx_lock, flags);
+ kibnal_check_sends(conn);
+ }
+ return 0;
+ }
- RETURN(tx);
+ CERROR ("post rx -> %s failed %d\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid), frc);
+ rc = -EIO;
+ kibnal_close_conn(rx->rx_conn, rc);
+ /* No more posts for this rx; so lose its ref */
+ kibnal_conn_decref(conn);
+ return rc;
}
-static int
-kibnal_dist(lib_nal_t *nal, ptl_nid_t nid, unsigned long *dist)
+int
+kibnal_post_receives (kib_conn_t *conn)
{
- /* I would guess that if kibnal_get_peer (nid) == NULL,
- and we're not routing, then 'nid' is very distant :) */
- if ( nal->libnal_ni.ni_pid.nid == nid ) {
- *dist = 0;
- } else {
- *dist = 1;
+ int i;
+ int rc;
+
+ LASSERT (conn->ibc_state == IBNAL_CONN_CONNECTING);
+
+ for (i = 0; i < IBNAL_RX_MSGS; i++) {
+ /* +1 ref for rx desc. This ref remains until kibnal_post_rx
+ * fails (i.e. actual failure or we're disconnecting) */
+ kibnal_conn_addref(conn);
+ rc = kibnal_post_rx (&conn->ibc_rxs[i], 0, 0);
+ if (rc != 0)
+ return rc;
}
return 0;
}
-static void
-kibnal_complete_passive_rdma(kib_conn_t *conn, __u64 cookie, int status)
+kib_tx_t *
+kibnal_find_waiting_tx_locked(kib_conn_t *conn, int txtype, __u64 cookie)
{
- struct list_head *ttmp;
- unsigned long flags;
- int idle;
-
- spin_lock_irqsave (&conn->ibc_lock, flags);
-
- list_for_each (ttmp, &conn->ibc_active_txs) {
- kib_tx_t *tx = list_entry(ttmp, kib_tx_t, tx_list);
-
- LASSERT (tx->tx_passive_rdma ||
- !tx->tx_passive_rdma_wait);
-
- LASSERT (tx->tx_passive_rdma_wait ||
- tx->tx_sending != 0);
+ struct list_head *tmp;
+
+ list_for_each(tmp, &conn->ibc_active_txs) {
+ kib_tx_t *tx = list_entry(tmp, kib_tx_t, tx_list);
+
+ LASSERT (!tx->tx_queued);
+ LASSERT (tx->tx_sending != 0 || tx->tx_waiting);
- if (!tx->tx_passive_rdma_wait ||
- tx->tx_passive_rdma_cookie != cookie)
+ if (tx->tx_cookie != cookie)
continue;
- CDEBUG(D_NET, "Complete %p "LPD64": %d\n", tx, cookie, status);
+ if (tx->tx_waiting &&
+ tx->tx_msg->ibm_type == txtype)
+ return tx;
- tx->tx_status = status;
- tx->tx_passive_rdma_wait = 0;
- idle = (tx->tx_sending == 0);
+ CWARN("Bad completion: %swaiting, type %x (wanted %x)\n",
+ tx->tx_waiting ? "" : "NOT ",
+ tx->tx_msg->ibm_type, txtype);
+ }
+ return NULL;
+}
- if (idle)
- list_del (&tx->tx_list);
+void
+kibnal_handle_completion(kib_conn_t *conn, int txtype, int status, __u64 cookie)
+{
+ kib_tx_t *tx;
+ int idle;
- spin_unlock_irqrestore (&conn->ibc_lock, flags);
+ spin_lock(&conn->ibc_lock);
- /* I could be racing with tx callbacks. It's whoever
- * _makes_ tx idle that frees it */
- if (idle)
- kibnal_tx_done (tx);
+ tx = kibnal_find_waiting_tx_locked(conn, txtype, cookie);
+ if (tx == NULL) {
+ spin_unlock(&conn->ibc_lock);
+
+ CWARN("Unmatched completion type %x cookie "LPX64" from %s\n",
+ txtype, cookie, libcfs_nid2str(conn->ibc_peer->ibp_nid));
+ kibnal_close_conn (conn, -EPROTO);
return;
}
-
- spin_unlock_irqrestore (&conn->ibc_lock, flags);
- CERROR ("Unmatched (late?) RDMA completion "LPX64" from "LPX64"\n",
- cookie, conn->ibc_peer->ibp_nid);
+ if (tx->tx_status == 0) { /* success so far */
+ if (status < 0) { /* failed? */
+ tx->tx_status = status;
+ } else if (txtype == IBNAL_MSG_GET_REQ) {
+ lnet_set_reply_msg_len(kibnal_data.kib_ni,
+ tx->tx_lntmsg[1], status);
+ }
+ }
+
+ tx->tx_waiting = 0;
+
+ idle = !tx->tx_queued && (tx->tx_sending == 0);
+ if (idle)
+ list_del(&tx->tx_list);
+
+ spin_unlock(&conn->ibc_lock);
+
+ if (idle)
+ kibnal_tx_done(tx);
}
-static __u32
-kibnal_lkey(kib_pages_t *ibp)
+void
+kibnal_send_completion (kib_conn_t *conn, int type, int status, __u64 cookie)
{
- if (kibnal_whole_mem())
- return kibnal_data.kib_md.md_lkey;
-
- return ibp->ibp_lkey;
+ kib_tx_t *tx = kibnal_get_idle_tx();
+
+ if (tx == NULL) {
+ CERROR("Can't get tx for completion %x for %s\n",
+ type, libcfs_nid2str(conn->ibc_peer->ibp_nid));
+ return;
+ }
+
+ tx->tx_msg->ibm_u.completion.ibcm_status = status;
+ tx->tx_msg->ibm_u.completion.ibcm_cookie = cookie;
+ kibnal_init_tx_msg(tx, type, sizeof(kib_completion_msg_t));
+
+ kibnal_queue_tx(tx, conn);
}
-static void
-kibnal_post_rx (kib_rx_t *rx, int do_credits)
+void
+kibnal_handle_rx (kib_rx_t *rx)
{
+ kib_msg_t *msg = rx->rx_msg;
kib_conn_t *conn = rx->rx_conn;
+ int credits = msg->ibm_credits;
+ kib_tx_t *tx;
int rc = 0;
- unsigned long flags;
- FSTATUS frc;
- ENTRY;
-
- rx->rx_gl = (IB_LOCAL_DATASEGMENT) {
- .Address = rx->rx_vaddr,
- .Length = IBNAL_MSG_SIZE,
- .Lkey = kibnal_lkey(conn->ibc_rx_pages),
- };
+ int repost = 1;
+ int rsrvd_credit = 0;
+ int rc2;
- rx->rx_wrq = (IB_WORK_REQ) {
- .Operation = WROpRecv,
- .DSListDepth = 1,
- .MessageLen = IBNAL_MSG_SIZE,
- .WorkReqId = kibnal_ptr2wreqid(rx, 1),
- .DSList = &rx->rx_gl,
- };
+ LASSERT (conn->ibc_state >= IBNAL_CONN_ESTABLISHED);
- KIB_ASSERT_CONN_STATE_RANGE(conn, IBNAL_CONN_ESTABLISHED,
- IBNAL_CONN_DREP);
- LASSERT (!rx->rx_posted);
- rx->rx_posted = 1;
- mb();
+ CDEBUG (D_NET, "Received %x[%d] from %s\n",
+ msg->ibm_type, credits, libcfs_nid2str(conn->ibc_peer->ibp_nid));
+
+ if (credits != 0) {
+ /* Have I received credits that will let me send? */
+ spin_lock(&conn->ibc_lock);
+ conn->ibc_credits += credits;
+ spin_unlock(&conn->ibc_lock);
- if (conn->ibc_state != IBNAL_CONN_ESTABLISHED)
- rc = -ECONNABORTED;
- else {
- frc = iibt_postrecv(conn->ibc_qp, &rx->rx_wrq);
- if (frc != FSUCCESS) {
- CDEBUG(D_NET, "post failed %d\n", frc);
- rc = -EINVAL;
- }
- CDEBUG(D_NET, "posted rx %p\n", &rx->rx_wrq);
+ kibnal_check_sends(conn);
}
- if (rc == 0) {
- if (do_credits) {
- spin_lock_irqsave(&conn->ibc_lock, flags);
- conn->ibc_outstanding_credits++;
- spin_unlock_irqrestore(&conn->ibc_lock, flags);
+ switch (msg->ibm_type) {
+ default:
+ CERROR("Bad IBNAL message type %x from %s\n",
+ msg->ibm_type, libcfs_nid2str(conn->ibc_peer->ibp_nid));
+ rc = -EPROTO;
+ break;
- kibnal_check_sends(conn);
- }
- EXIT;
- return;
- }
+ case IBNAL_MSG_NOOP:
+ break;
- if (conn->ibc_state == IBNAL_CONN_ESTABLISHED) {
- CERROR ("Error posting receive -> "LPX64": %d\n",
- conn->ibc_peer->ibp_nid, rc);
- kibnal_close_conn (rx->rx_conn, rc);
- } else {
- CDEBUG (D_NET, "Error posting receive -> "LPX64": %d\n",
- conn->ibc_peer->ibp_nid, rc);
- }
+ case IBNAL_MSG_IMMEDIATE:
+ rc = lnet_parse(kibnal_data.kib_ni, &msg->ibm_u.immediate.ibim_hdr,
+ msg->ibm_srcnid, rx, 0);
+ repost = rc < 0; /* repost on error */
+ break;
+
+ case IBNAL_MSG_PUT_REQ:
+ rc = lnet_parse(kibnal_data.kib_ni, &msg->ibm_u.putreq.ibprm_hdr,
+ msg->ibm_srcnid, rx, 1);
+ repost = rc < 0; /* repost on error */
+ break;
- /* Drop rx's ref */
- kibnal_put_conn (conn);
- EXIT;
-}
+ case IBNAL_MSG_PUT_NAK:
+ rsrvd_credit = 1; /* rdma reply (was pre-reserved) */
-#if IBNAL_CKSUM
-static inline __u32 kibnal_cksum (void *ptr, int nob)
-{
- char *c = ptr;
- __u32 sum = 0;
+ CWARN ("PUT_NACK from %s\n", libcfs_nid2str(conn->ibc_peer->ibp_nid));
+ kibnal_handle_completion(conn, IBNAL_MSG_PUT_REQ,
+ msg->ibm_u.completion.ibcm_status,
+ msg->ibm_u.completion.ibcm_cookie);
+ break;
- while (nob-- > 0)
- sum = ((sum << 1) | (sum >> 31)) + *c++;
-
- return (sum);
-}
-#endif
+ case IBNAL_MSG_PUT_ACK:
+ rsrvd_credit = 1; /* rdma reply (was pre-reserved) */
-static void hexdump(char *string, void *ptr, int len)
-{
- unsigned char *c = ptr;
- int i;
+ spin_lock(&conn->ibc_lock);
+ tx = kibnal_find_waiting_tx_locked(conn, IBNAL_MSG_PUT_REQ,
+ msg->ibm_u.putack.ibpam_src_cookie);
+ if (tx != NULL)
+ list_del(&tx->tx_list);
+ spin_unlock(&conn->ibc_lock);
- return;
+ if (tx == NULL) {
+ CERROR("Unmatched PUT_ACK from %s\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid));
+ rc = -EPROTO;
+ break;
+ }
- if (len < 0 || len > 2048) {
- printk("XXX what the hell? %d\n",len);
- return;
- }
+ LASSERT (tx->tx_waiting);
+ /* CAVEAT EMPTOR: I could be racing with tx_complete, but...
+ * (a) I can overwrite tx_msg since my peer has received it!
+ * (b) tx_waiting set tells tx_complete() it's not done. */
+
+ tx->tx_nwrq = 0; /* overwrite PUT_REQ */
+
+ rc2 = kibnal_init_rdma(tx, IBNAL_MSG_PUT_DONE,
+ kibnal_rd_size(&msg->ibm_u.putack.ibpam_rd),
+ &msg->ibm_u.putack.ibpam_rd,
+ msg->ibm_u.putack.ibpam_dst_cookie);
+ if (rc2 < 0)
+ CERROR("Can't setup rdma for PUT to %s: %d\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid), rc2);
+
+ spin_lock(&conn->ibc_lock);
+ if (tx->tx_status == 0 && rc2 < 0)
+ tx->tx_status = rc2;
+ tx->tx_waiting = 0; /* clear waiting and queue atomically */
+ kibnal_queue_tx_locked(tx, conn);
+ spin_unlock(&conn->ibc_lock);
+ break;
+
+ case IBNAL_MSG_PUT_DONE:
+ /* This buffer was pre-reserved by not returning the credit
+ * when the PUT_REQ's buffer was reposted, so I just return it
+ * now */
+ kibnal_handle_completion(conn, IBNAL_MSG_PUT_ACK,
+ msg->ibm_u.completion.ibcm_status,
+ msg->ibm_u.completion.ibcm_cookie);
+ break;
- printk("%d bytes of '%s' from 0x%p\n", len, string, ptr);
+ case IBNAL_MSG_GET_REQ:
+ rc = lnet_parse(kibnal_data.kib_ni, &msg->ibm_u.get.ibgm_hdr,
+ msg->ibm_srcnid, rx, 1);
+ repost = rc < 0; /* repost on error */
+ break;
- for (i = 0; i < len;) {
- printk("%02x",*(c++));
- i++;
- if (!(i & 15)) {
- printk("\n");
- } else if (!(i&1)) {
- printk(" ");
- }
+ case IBNAL_MSG_GET_DONE:
+ rsrvd_credit = 1; /* rdma reply (was pre-reserved) */
+
+ kibnal_handle_completion(conn, IBNAL_MSG_GET_REQ,
+ msg->ibm_u.completion.ibcm_status,
+ msg->ibm_u.completion.ibcm_cookie);
+ break;
}
- if(len & 15) {
- printk("\n");
+ if (rc < 0) /* protocol error */
+ kibnal_close_conn(conn, rc);
+
+ if (repost) {
+ if (conn->ibc_version == IBNAL_MSG_VERSION_RDMAREPLYNOTRSRVD)
+ rsrvd_credit = 0; /* peer isn't pre-reserving */
+
+ kibnal_post_rx(rx, !rsrvd_credit, rsrvd_credit);
}
}
-static void
-kibnal_rx_callback (IB_WORK_COMPLETION *wc)
+void
+kibnal_rx_complete (IB_WORK_COMPLETION *wc, __u64 rxseq)
{
kib_rx_t *rx = (kib_rx_t *)kibnal_wreqid2ptr(wc->WorkReqId);
+ int nob = wc->Length;
kib_msg_t *msg = rx->rx_msg;
kib_conn_t *conn = rx->rx_conn;
- int nob = wc->Length;
- const int base_nob = offsetof(kib_msg_t, ibm_u);
- int credits;
- int flipped;
unsigned long flags;
- __u32 i;
-#if IBNAL_CKSUM
- __u32 msg_cksum;
- __u32 computed_cksum;
-#endif
-
- /* we set the QP to erroring after we've finished disconnecting,
- * maybe we should do so sooner. */
- KIB_ASSERT_CONN_STATE_RANGE(conn, IBNAL_CONN_ESTABLISHED,
- IBNAL_CONN_DISCONNECTED);
+ int rc;
+ int err = -EIO;
- CDEBUG(D_NET, "rx %p conn %p\n", rx, conn);
- LASSERT (rx->rx_posted);
- rx->rx_posted = 0;
+ LASSERT (rx->rx_nob < 0); /* was posted */
+ rx->rx_nob = 0; /* isn't now */
mb();
/* receives complete with error in any case after we've started
* disconnecting */
if (conn->ibc_state > IBNAL_CONN_ESTABLISHED)
- goto failed;
+ goto ignore;
if (wc->Status != WRStatusSuccess) {
- CERROR("Rx from "LPX64" failed: %d\n",
- conn->ibc_peer->ibp_nid, wc->Status);
+ CERROR("Rx from %s failed: %d\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid), wc->Status);
goto failed;
}
- if (nob < base_nob) {
- CERROR ("Short rx from "LPX64": %d < expected %d\n",
- conn->ibc_peer->ibp_nid, nob, base_nob);
+ rc = kibnal_unpack_msg(msg, conn->ibc_version, nob);
+ if (rc != 0) {
+ CERROR ("Error %d unpacking rx from %s\n",
+ rc, libcfs_nid2str(conn->ibc_peer->ibp_nid));
goto failed;
}
- hexdump("rx", rx->rx_msg, sizeof(kib_msg_t));
-
- /* Receiver does any byte flipping if necessary... */
-
- if (msg->ibm_magic == IBNAL_MSG_MAGIC) {
- flipped = 0;
- } else {
- if (msg->ibm_magic != __swab32(IBNAL_MSG_MAGIC)) {
- CERROR ("Unrecognised magic: %08x from "LPX64"\n",
- msg->ibm_magic, conn->ibc_peer->ibp_nid);
- goto failed;
- }
- flipped = 1;
- __swab16s (&msg->ibm_version);
- LASSERT (sizeof(msg->ibm_type) == 1);
- LASSERT (sizeof(msg->ibm_credits) == 1);
- }
+ rx->rx_nob = nob; /* Now I know nob > 0 */
+ mb();
- if (msg->ibm_version != IBNAL_MSG_VERSION) {
- CERROR ("Incompatible msg version %d (%d expected)\n",
- msg->ibm_version, IBNAL_MSG_VERSION);
+ if (msg->ibm_srcnid != conn->ibc_peer->ibp_nid ||
+ msg->ibm_dstnid != kibnal_data.kib_ni->ni_nid ||
+ msg->ibm_srcstamp != conn->ibc_incarnation ||
+ msg->ibm_dststamp != kibnal_data.kib_incarnation) {
+ CERROR ("Stale rx from %s\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid));
+ err = -ESTALE;
goto failed;
}
-#if IBNAL_CKSUM
- if (nob != msg->ibm_nob) {
- CERROR ("Unexpected # bytes %d (%d expected)\n", nob, msg->ibm_nob);
+ if (msg->ibm_seq != rxseq) {
+ CERROR ("Out-of-sequence rx from %s"
+ ": got "LPD64" but expected "LPD64"\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid),
+ msg->ibm_seq, rxseq);
goto failed;
}
- msg_cksum = le32_to_cpu(msg->ibm_cksum);
- msg->ibm_cksum = 0;
- computed_cksum = kibnal_cksum (msg, nob);
-
- if (msg_cksum != computed_cksum) {
- CERROR ("Checksum failure %d: (%d expected)\n",
- computed_cksum, msg_cksum);
-// goto failed;
- }
- CDEBUG(D_NET, "cksum %x, nob %d\n", computed_cksum, nob);
-#endif
-
- /* Have I received credits that will let me send? */
- credits = msg->ibm_credits;
- if (credits != 0) {
- spin_lock_irqsave(&conn->ibc_lock, flags);
- conn->ibc_credits += credits;
- spin_unlock_irqrestore(&conn->ibc_lock, flags);
-
- kibnal_check_sends(conn);
- }
-
- switch (msg->ibm_type) {
- case IBNAL_MSG_NOOP:
- kibnal_post_rx (rx, 1);
- return;
-
- case IBNAL_MSG_IMMEDIATE:
- if (nob < base_nob + sizeof (kib_immediate_msg_t)) {
- CERROR ("Short IMMEDIATE from "LPX64": %d\n",
- conn->ibc_peer->ibp_nid, nob);
- goto failed;
- }
- break;
-
- case IBNAL_MSG_PUT_RDMA:
- case IBNAL_MSG_GET_RDMA:
- if (nob < base_nob + sizeof (kib_rdma_msg_t)) {
- CERROR ("Short RDMA msg from "LPX64": %d\n",
- conn->ibc_peer->ibp_nid, nob);
- goto failed;
- }
- if (flipped)
- __swab32(msg->ibm_u.rdma.ibrm_num_descs);
-
- CDEBUG(D_NET, "%d RDMA: cookie "LPX64":\n",
- msg->ibm_type, msg->ibm_u.rdma.ibrm_cookie);
-
- if ((msg->ibm_u.rdma.ibrm_num_descs > PTL_MD_MAX_IOV) ||
- (kib_rdma_msg_len(msg->ibm_u.rdma.ibrm_num_descs) >
- min(nob, IBNAL_MSG_SIZE))) {
- CERROR ("num_descs %d too large\n",
- msg->ibm_u.rdma.ibrm_num_descs);
- goto failed;
- }
-
- if (flipped) {
- __swab32(msg->ibm_u.rdma.rd_key);
- }
-
- for(i = 0; i < msg->ibm_u.rdma.ibrm_num_descs; i++) {
- kib_rdma_desc_t *desc = &msg->ibm_u.rdma.ibrm_desc[i];
+ /* set time last known alive */
+ kibnal_peer_alive(conn->ibc_peer);
- if (flipped) {
- __swab32(desc->rd_nob);
- __swab64(desc->rd_addr);
- }
+ /* racing with connection establishment/teardown! */
- CDEBUG(D_NET, " key %x, " "addr "LPX64", nob %u\n",
- msg->ibm_u.rdma.rd_key, desc->rd_addr, desc->rd_nob);
- }
- break;
-
- case IBNAL_MSG_PUT_DONE:
- case IBNAL_MSG_GET_DONE:
- if (nob < base_nob + sizeof (kib_completion_msg_t)) {
- CERROR ("Short COMPLETION msg from "LPX64": %d\n",
- conn->ibc_peer->ibp_nid, nob);
- goto failed;
+ if (conn->ibc_state < IBNAL_CONN_ESTABLISHED) {
+ write_lock_irqsave(&kibnal_data.kib_global_lock, flags);
+ /* must check holding global lock to eliminate race */
+ if (conn->ibc_state < IBNAL_CONN_ESTABLISHED) {
+ list_add_tail(&rx->rx_list, &conn->ibc_early_rxs);
+ write_unlock_irqrestore(&kibnal_data.kib_global_lock,
+ flags);
+ return;
}
- if (flipped)
- __swab32s(&msg->ibm_u.completion.ibcm_status);
-
- CDEBUG(D_NET, "%d DONE: cookie "LPX64", status %d\n",
- msg->ibm_type, msg->ibm_u.completion.ibcm_cookie,
- msg->ibm_u.completion.ibcm_status);
-
- kibnal_complete_passive_rdma (conn,
- msg->ibm_u.completion.ibcm_cookie,
- msg->ibm_u.completion.ibcm_status);
- kibnal_post_rx (rx, 1);
- return;
-
- default:
- CERROR ("Can't parse type from "LPX64": %d\n",
- conn->ibc_peer->ibp_nid, msg->ibm_type);
- goto failed;
+ write_unlock_irqrestore(&kibnal_data.kib_global_lock,
+ flags);
}
-
- /* schedule for kibnal_rx() in thread context */
- spin_lock_irqsave(&kibnal_data.kib_sched_lock, flags);
-
- list_add_tail (&rx->rx_list, &kibnal_data.kib_sched_rxq);
- wake_up (&kibnal_data.kib_sched_waitq);
-
- spin_unlock_irqrestore(&kibnal_data.kib_sched_lock, flags);
+ kibnal_handle_rx(rx);
return;
failed:
- CDEBUG(D_NET, "rx %p conn %p\n", rx, conn);
- kibnal_close_conn(conn, -ECONNABORTED);
-
+ kibnal_close_conn(conn, err);
+ ignore:
/* Don't re-post rx & drop its ref on conn */
- kibnal_put_conn(conn);
+ kibnal_conn_decref(conn);
}
-void
-kibnal_rx (kib_rx_t *rx)
+struct page *
+kibnal_kvaddr_to_page (unsigned long vaddr)
{
- kib_msg_t *msg = rx->rx_msg;
-
- /* Clear flag so I can detect if I've sent an RDMA completion */
- rx->rx_rdma = 0;
+ struct page *page;
- switch (msg->ibm_type) {
- case IBNAL_MSG_GET_RDMA:
- lib_parse(&kibnal_lib, &msg->ibm_u.rdma.ibrm_hdr, rx);
- /* If the incoming get was matched, I'll have initiated the
- * RDMA and the completion message... */
- if (rx->rx_rdma)
- break;
-
- /* Otherwise, I'll send a failed completion now to prevent
- * the peer's GET blocking for the full timeout. */
- CERROR ("Completing unmatched RDMA GET from "LPX64"\n",
- rx->rx_conn->ibc_peer->ibp_nid);
- kibnal_start_active_rdma (IBNAL_MSG_GET_DONE, -EIO,
- rx, NULL, 0, NULL, NULL, 0, 0);
- break;
-
- case IBNAL_MSG_PUT_RDMA:
- lib_parse(&kibnal_lib, &msg->ibm_u.rdma.ibrm_hdr, rx);
- if (rx->rx_rdma)
- break;
- /* This is most unusual, since even if lib_parse() didn't
- * match anything, it should have asked us to read (and
- * discard) the payload. The portals header must be
- * inconsistent with this message type, so it's the
- * sender's fault for sending garbage and she can time
- * herself out... */
- CERROR ("Uncompleted RMDA PUT from "LPX64"\n",
- rx->rx_conn->ibc_peer->ibp_nid);
- break;
-
- case IBNAL_MSG_IMMEDIATE:
- lib_parse(&kibnal_lib, &msg->ibm_u.immediate.ibim_hdr, rx);
- LASSERT (!rx->rx_rdma);
- break;
-
- default:
+ if (vaddr >= VMALLOC_START &&
+ vaddr < VMALLOC_END) {
+ page = vmalloc_to_page ((void *)vaddr);
+ LASSERT (page != NULL);
+ return page;
+ }
+#ifdef CONFIG_HIGHMEM
+ if (vaddr >= PKMAP_BASE &&
+ vaddr < (PKMAP_BASE + LAST_PKMAP * PAGE_SIZE)) {
+ /* No highmem pages only used for bulk (kiov) I/O */
+ CERROR("find page for address in highmem\n");
LBUG();
- break;
}
-
- kibnal_post_rx (rx, 1);
+#endif
+ page = virt_to_page (vaddr);
+ LASSERT (page != NULL);
+ return page;
}
-static struct page *
-kibnal_kvaddr_to_page (unsigned long vaddr)
+#if !IBNAL_USE_FMR
+int
+kibnal_append_rdfrag(kib_rdma_desc_t *rd, int active, struct page *page,
+ unsigned long page_offset, unsigned long len)
{
- struct page *page;
+ kib_rdma_frag_t *frag = &rd->rd_frags[rd->rd_nfrag];
- if (vaddr >= VMALLOC_START &&
- vaddr < VMALLOC_END)
- page = vmalloc_to_page ((void *)vaddr);
-#if CONFIG_HIGHMEM
- else if (vaddr >= PKMAP_BASE &&
- vaddr < (PKMAP_BASE + LAST_PKMAP * PAGE_SIZE))
- page = vmalloc_to_page ((void *)vaddr);
- /* in 2.4 ^ just walks the page tables */
-#endif
- else
- page = virt_to_page (vaddr);
+ if (rd->rd_nfrag >= IBNAL_MAX_RDMA_FRAGS) {
+ CERROR ("Too many RDMA fragments\n");
+ return -EMSGSIZE;
+ }
+
+ if (active) {
+ if (rd->rd_nfrag == 0)
+ rd->rd_key = kibnal_data.kib_whole_mem.md_lkey;
+ } else {
+ if (rd->rd_nfrag == 0)
+ rd->rd_key = kibnal_data.kib_whole_mem.md_rkey;
+ }
- if (!VALID_PAGE (page))
- page = NULL;
+ frag->rf_nob = len;
+ frag->rf_addr = kibnal_data.kib_whole_mem.md_addr +
+ lnet_page2phys(page) + page_offset;
- return page;
+ CDEBUG(D_NET,"map key %x frag [%d]["LPX64" for %d]\n",
+ rd->rd_key, rd->rd_nfrag, frag->rf_addr, frag->rf_nob);
+
+ rd->rd_nfrag++;
+ return 0;
}
-static void
-kibnal_fill_ibrm(kib_tx_t *tx, struct page *page, unsigned long page_offset,
- unsigned long len, int active)
+int
+kibnal_setup_rd_iov(kib_tx_t *tx, kib_rdma_desc_t *rd, int active,
+ unsigned int niov, struct iovec *iov, int offset, int nob)
+
{
- kib_rdma_msg_t *ibrm = &tx->tx_msg->ibm_u.rdma;
- kib_rdma_desc_t *desc;
+ int fragnob;
+ int rc;
+ unsigned long vaddr;
+ struct page *page;
+ int page_offset;
- LASSERTF(ibrm->ibrm_num_descs < PTL_MD_MAX_IOV, "%u\n",
- ibrm->ibrm_num_descs);
+ LASSERT (nob > 0);
+ LASSERT (niov > 0);
+ LASSERT ((rd != tx->tx_rd) == !active);
- desc = &ibrm->ibrm_desc[ibrm->ibrm_num_descs];
- if (active)
- ibrm->rd_key = kibnal_data.kib_md.md_lkey;
- else
- ibrm->rd_key = kibnal_data.kib_md.md_rkey;
- desc->rd_nob = len; /*PAGE_SIZE - kiov->kiov_offset; */
- desc->rd_addr = kibnal_page2phys(page) + page_offset +
- kibnal_data.kib_md.md_addr;
+ while (offset >= iov->iov_len) {
+ offset -= iov->iov_len;
+ niov--;
+ iov++;
+ LASSERT (niov > 0);
+ }
+
+ rd->rd_nfrag = 0;
+ do {
+ LASSERT (niov > 0);
- ibrm->ibrm_num_descs++;
+ vaddr = ((unsigned long)iov->iov_base) + offset;
+ page_offset = vaddr & (PAGE_SIZE - 1);
+ page = kibnal_kvaddr_to_page(vaddr);
+ if (page == NULL) {
+ CERROR ("Can't find page\n");
+ return -EFAULT;
+ }
+
+ fragnob = min((int)(iov->iov_len - offset), nob);
+ fragnob = min(fragnob, (int)PAGE_SIZE - page_offset);
+
+ rc = kibnal_append_rdfrag(rd, active, page,
+ page_offset, fragnob);
+ if (rc != 0)
+ return rc;
+
+ if (offset + fragnob < iov->iov_len) {
+ offset += fragnob;
+ } else {
+ offset = 0;
+ iov++;
+ niov--;
+ }
+ nob -= fragnob;
+ } while (nob > 0);
+
+ return 0;
}
-static int
-kibnal_map_rdma_iov(kib_tx_t *tx, unsigned long vaddr, int nob, int active)
+int
+kibnal_setup_rd_kiov (kib_tx_t *tx, kib_rdma_desc_t *rd, int active,
+ int nkiov, lnet_kiov_t *kiov, int offset, int nob)
{
- struct page *page;
- int page_offset, len;
+ int fragnob;
+ int rc;
- while (nob > 0) {
- page = kibnal_kvaddr_to_page(vaddr);
- if (page == NULL)
- return -EFAULT;
+ CDEBUG(D_NET, "niov %d offset %d nob %d\n", nkiov, offset, nob);
- page_offset = vaddr & (PAGE_SIZE - 1);
- len = min(nob, (int)PAGE_SIZE - page_offset);
-
- kibnal_fill_ibrm(tx, page, page_offset, len, active);
- nob -= len;
- vaddr += len;
+ LASSERT (nob > 0);
+ LASSERT (nkiov > 0);
+ LASSERT ((rd != tx->tx_rd) == !active);
+
+ while (offset >= kiov->kiov_len) {
+ offset -= kiov->kiov_len;
+ nkiov--;
+ kiov++;
+ LASSERT (nkiov > 0);
}
+
+ rd->rd_nfrag = 0;
+ do {
+ LASSERT (nkiov > 0);
+ fragnob = min((int)(kiov->kiov_len - offset), nob);
+
+ rc = kibnal_append_rdfrag(rd, active, kiov->kiov_page,
+ kiov->kiov_offset + offset,
+ fragnob);
+ if (rc != 0)
+ return rc;
+
+ offset = 0;
+ kiov++;
+ nkiov--;
+ nob -= fragnob;
+ } while (nob > 0);
+
return 0;
}
+#else
+int
+kibnal_map_tx (kib_tx_t *tx, kib_rdma_desc_t *rd, int active,
+ int npages, unsigned long page_offset, int nob)
+{
+ IB_ACCESS_CONTROL access = {0,};
+ FSTATUS frc;
+
+ LASSERT ((rd != tx->tx_rd) == !active);
+ LASSERT (!tx->tx_md.md_active);
+ LASSERT (tx->tx_md.md_fmrcount > 0);
+ LASSERT (page_offset < PAGE_SIZE);
+ LASSERT (npages >= (1 + ((page_offset + nob - 1)>>PAGE_SHIFT)));
+ LASSERT (npages <= LNET_MAX_IOV);
+
+ if (!active) {
+ // access.s.MWBindable = 1;
+ access.s.LocalWrite = 1;
+ access.s.RdmaWrite = 1;
+ }
+
+ /* Map the memory described by tx->tx_pages
+ frc = iibt_register_physical_memory(kibnal_data.kib_hca,
+ IBNAL_RDMA_BASE,
+ tx->tx_pages, npages,
+ page_offset,
+ kibnal_data.kib_pd,
+ access,
+ &tx->tx_md.md_handle,
+ &tx->tx_md.md_addr,
+ &tx->tx_md.md_lkey,
+ &tx->tx_md.md_rkey);
+ */
+ return -EINVAL;
+}
-static int
-kibnal_map_iov (kib_tx_t *tx, IB_ACCESS_CONTROL access,
- int niov, struct iovec *iov, int offset, int nob, int active)
+int
+kibnal_setup_rd_iov (kib_tx_t *tx, kib_rdma_desc_t *rd, int active,
+ unsigned int niov, struct iovec *iov, int offset, int nob)
{
- void *vaddr;
- FSTATUS frc;
+ int resid;
+ int fragnob;
+ struct page *page;
+ int npages;
+ unsigned long page_offset;
+ unsigned long vaddr;
LASSERT (nob > 0);
LASSERT (niov > 0);
- LASSERT (tx->tx_mapped == KIB_TX_UNMAPPED);
while (offset >= iov->iov_len) {
offset -= iov->iov_len;
return (-EMSGSIZE);
}
- /* our large contiguous iov could be backed by multiple physical
- * pages. */
- if (kibnal_whole_mem()) {
- int rc;
- tx->tx_msg->ibm_u.rdma.ibrm_num_descs = 0;
- rc = kibnal_map_rdma_iov(tx, (unsigned long)iov->iov_base +
- offset, nob, active);
- if (rc != 0) {
- CERROR ("Can't map iov: %d\n", rc);
- return rc;
+ vaddr = ((unsigned long)iov->iov_base) + offset;
+
+ page_offset = vaddr & (PAGE_SIZE - 1);
+ resid = nob;
+ npages = 0;
+
+ do {
+ LASSERT (npages < LNET_MAX_IOV);
+
+ page = kibnal_kvaddr_to_page(vaddr);
+ if (page == NULL) {
+ CERROR("Can't find page for %lu\n", vaddr);
+ return -EFAULT;
}
- return 0;
- }
- vaddr = (void *)(((unsigned long)iov->iov_base) + offset);
- tx->tx_md.md_addr = (__u64)((unsigned long)vaddr);
+ tx->tx_pages[npages++] = lnet_page2phys(page);
- frc = iibt_register_memory(kibnal_data.kib_hca, vaddr, nob,
- kibnal_data.kib_pd, access,
- &tx->tx_md.md_handle, &tx->tx_md.md_lkey,
- &tx->tx_md.md_rkey);
- if (frc != 0) {
- CERROR ("Can't map vaddr %p: %d\n", vaddr, frc);
- return -EINVAL;
- }
+ fragnob = PAGE_SIZE - (vaddr & (PAGE_SIZE - 1));
+ vaddr += fragnob;
+ resid -= fragnob;
- tx->tx_mapped = KIB_TX_MAPPED;
- return (0);
+ } while (resid > 0);
+
+ return kibnal_map_tx(tx, rd, active, npages, page_offset, nob);
}
-static int
-kibnal_map_kiov (kib_tx_t *tx, IB_ACCESS_CONTROL access,
- int nkiov, ptl_kiov_t *kiov,
- int offset, int nob, int active)
+int
+kibnal_setup_rd_kiov (kib_tx_t *tx, kib_rdma_desc_t *rd, int active,
+ int nkiov, lnet_kiov_t *kiov, int offset, int nob)
{
- __u64 *phys = NULL;
- int page_offset;
- int nphys;
- int resid;
- int phys_size = 0;
- FSTATUS frc;
- int i, rc = 0;
-
+ int resid;
+ int npages;
+ unsigned long page_offset;
+
CDEBUG(D_NET, "niov %d offset %d nob %d\n", nkiov, offset, nob);
LASSERT (nob > 0);
LASSERT (nkiov > 0);
- LASSERT (tx->tx_mapped == KIB_TX_UNMAPPED);
+ LASSERT (nkiov <= LNET_MAX_IOV);
+ LASSERT (!tx->tx_md.md_active);
+ LASSERT ((rd != tx->tx_rd) == !active);
while (offset >= kiov->kiov_len) {
offset -= kiov->kiov_len;
}
page_offset = kiov->kiov_offset + offset;
- nphys = 1;
-
- if (!kibnal_whole_mem()) {
- phys_size = nkiov * sizeof (*phys);
- PORTAL_ALLOC(phys, phys_size);
- if (phys == NULL) {
- CERROR ("Can't allocate tmp phys\n");
- return (-ENOMEM);
- }
-
- phys[0] = kibnal_page2phys(kiov->kiov_page);
- } else {
- tx->tx_msg->ibm_u.rdma.ibrm_num_descs = 0;
- kibnal_fill_ibrm(tx, kiov->kiov_page, kiov->kiov_offset,
- kiov->kiov_len, active);
- }
-
- resid = nob - (kiov->kiov_len - offset);
+
+ resid = offset + nob;
+ npages = 0;
- while (resid > 0) {
- kiov++;
- nkiov--;
+ do {
+ LASSERT (npages < LNET_MAX_IOV);
LASSERT (nkiov > 0);
- if (kiov->kiov_offset != 0 ||
- ((resid > PAGE_SIZE) &&
- kiov->kiov_len < PAGE_SIZE)) {
+ if ((npages > 0 && kiov->kiov_offset != 0) ||
+ (resid > kiov->kiov_len &&
+ (kiov->kiov_offset + kiov->kiov_len) != PAGE_SIZE)) {
/* Can't have gaps */
CERROR ("Can't make payload contiguous in I/O VM:"
- "page %d, offset %d, len %d \n", nphys,
- kiov->kiov_offset, kiov->kiov_len);
-
- for (i = -nphys; i < nkiov; i++)
- {
- CERROR("kiov[%d] %p +%d for %d\n",
- i, kiov[i].kiov_page, kiov[i].kiov_offset, kiov[i].kiov_len);
- }
+ "page %d, offset %d, len %d \n",
+ npages, kiov->kiov_offset, kiov->kiov_len);
- rc = -EINVAL;
- goto out;
+ return -EINVAL;
}
- if (nphys == PTL_MD_MAX_IOV) {
- CERROR ("payload too big (%d)\n", nphys);
- rc = -EMSGSIZE;
- goto out;
- }
-
- if (!kibnal_whole_mem()) {
- LASSERT (nphys * sizeof (*phys) < phys_size);
- phys[nphys] = kibnal_page2phys(kiov->kiov_page);
- } else {
- if (kib_rdma_msg_len(nphys) > IBNAL_MSG_SIZE) {
- CERROR ("payload too big (%d)\n", nphys);
- rc = -EMSGSIZE;
- goto out;
- }
- kibnal_fill_ibrm(tx, kiov->kiov_page,
- kiov->kiov_offset, kiov->kiov_len,
- active);
- }
-
- nphys ++;
- resid -= PAGE_SIZE;
- }
-
- if (kibnal_whole_mem())
- goto out;
-
-#if 0
- CWARN ("nphys %d, nob %d, page_offset %d\n", nphys, nob, page_offset);
- for (i = 0; i < nphys; i++)
- CWARN (" [%d] "LPX64"\n", i, phys[i]);
-#endif
-
-#if IBNAL_FMR
-#error "iibnal hasn't learned about FMR yet"
- rc = ib_fmr_register_physical (kibnal_data.kib_fmr_pool,
- phys, nphys,
- &tx->tx_md.md_addr,
- page_offset,
- &tx->tx_md.md_handle.fmr,
- &tx->tx_md.md_lkey,
- &tx->tx_md.md_rkey);
-#else
- frc = iibt_register_physical_memory(kibnal_data.kib_hca,
- IBNAL_RDMA_BASE,
- phys, nphys,
- 0, /* offset */
- kibnal_data.kib_pd,
- access,
- &tx->tx_md.md_handle,
- &tx->tx_md.md_addr,
- &tx->tx_md.md_lkey,
- &tx->tx_md.md_rkey);
-#endif
- if (frc == FSUCCESS) {
- CDEBUG(D_NET, "Mapped %d pages %d bytes @ offset %d: lkey %x, rkey %x\n",
- nphys, nob, page_offset, tx->tx_md.md_lkey, tx->tx_md.md_rkey);
-#if IBNAL_FMR
- tx->tx_mapped = KIB_TX_MAPPED_FMR;
-#else
- tx->tx_mapped = KIB_TX_MAPPED;
-#endif
- } else {
- CERROR ("Can't map phys: %d\n", frc);
- rc = -EFAULT;
- }
+ tx->tx_pages[npages++] = lnet_page2phys(kiov->kiov_page);
+ resid -= kiov->kiov_len;
+ kiov++;
+ nkiov--;
+ } while (resid > 0);
- out:
- if (phys != NULL)
- PORTAL_FREE(phys, phys_size);
- return (rc);
+ return kibnal_map_tx(tx, rd, active, npages, page_offset, nob);
}
+#endif
-static kib_conn_t *
+kib_conn_t *
kibnal_find_conn_locked (kib_peer_t *peer)
{
struct list_head *tmp;
void
kibnal_check_sends (kib_conn_t *conn)
{
- unsigned long flags;
kib_tx_t *tx;
+ FSTATUS frc;
int rc;
- int i;
+ int consume_cred;
int done;
- int nwork;
- ENTRY;
- spin_lock_irqsave (&conn->ibc_lock, flags);
+ LASSERT (conn->ibc_state >= IBNAL_CONN_ESTABLISHED);
+
+ spin_lock(&conn->ibc_lock);
- LASSERT (conn->ibc_nsends_posted <= IBNAL_MSG_QUEUE_SIZE);
+ LASSERT (conn->ibc_nsends_posted <=
+ *kibnal_tunables.kib_concurrent_sends);
+ LASSERT (conn->ibc_reserved_credits >= 0);
+
+ while (conn->ibc_reserved_credits > 0 &&
+ !list_empty(&conn->ibc_tx_queue_rsrvd)) {
+ LASSERT (conn->ibc_version !=
+ IBNAL_MSG_VERSION_RDMAREPLYNOTRSRVD);
+ tx = list_entry(conn->ibc_tx_queue_rsrvd.next,
+ kib_tx_t, tx_list);
+ list_del(&tx->tx_list);
+ list_add_tail(&tx->tx_list, &conn->ibc_tx_queue);
+ conn->ibc_reserved_credits--;
+ }
if (list_empty(&conn->ibc_tx_queue) &&
- conn->ibc_outstanding_credits >= IBNAL_CREDIT_HIGHWATER) {
- spin_unlock_irqrestore(&conn->ibc_lock, flags);
+ list_empty(&conn->ibc_tx_queue_nocred) &&
+ (conn->ibc_outstanding_credits >= IBNAL_CREDIT_HIGHWATER ||
+ kibnal_send_keepalive(conn))) {
+ spin_unlock(&conn->ibc_lock);
- tx = kibnal_get_idle_tx(0); /* don't block */
+ tx = kibnal_get_idle_tx();
if (tx != NULL)
kibnal_init_tx_msg(tx, IBNAL_MSG_NOOP, 0);
- spin_lock_irqsave(&conn->ibc_lock, flags);
+ spin_lock(&conn->ibc_lock);
- if (tx != NULL) {
- atomic_inc(&conn->ibc_refcount);
+ if (tx != NULL)
kibnal_queue_tx_locked(tx, conn);
- }
}
- while (!list_empty (&conn->ibc_tx_queue)) {
- tx = list_entry (conn->ibc_tx_queue.next, kib_tx_t, tx_list);
+ for (;;) {
+ if (!list_empty(&conn->ibc_tx_queue_nocred)) {
+ LASSERT (conn->ibc_version !=
+ IBNAL_MSG_VERSION_RDMAREPLYNOTRSRVD);
+ tx = list_entry (conn->ibc_tx_queue_nocred.next,
+ kib_tx_t, tx_list);
+ consume_cred = 0;
+ } else if (!list_empty (&conn->ibc_tx_queue)) {
+ tx = list_entry (conn->ibc_tx_queue.next,
+ kib_tx_t, tx_list);
+ consume_cred = 1;
+ } else {
+ /* nothing waiting */
+ break;
+ }
+ LASSERT (tx->tx_queued);
/* We rely on this for QP sizing */
- LASSERT (tx->tx_nsp > 0 && tx->tx_nsp <= IBNAL_TX_MAX_SG);
+ LASSERT (tx->tx_nwrq > 0 && tx->tx_nwrq <= 1 + IBNAL_MAX_RDMA_FRAGS);
LASSERT (conn->ibc_outstanding_credits >= 0);
LASSERT (conn->ibc_outstanding_credits <= IBNAL_MSG_QUEUE_SIZE);
LASSERT (conn->ibc_credits >= 0);
LASSERT (conn->ibc_credits <= IBNAL_MSG_QUEUE_SIZE);
- /* Not on ibc_rdma_queue */
- LASSERT (!tx->tx_passive_rdma_wait);
-
- if (conn->ibc_nsends_posted == IBNAL_MSG_QUEUE_SIZE)
- GOTO(out, 0);
+ if (conn->ibc_nsends_posted ==
+ *kibnal_tunables.kib_concurrent_sends) {
+ /* We've got some tx completions outstanding... */
+ CDEBUG(D_NET, "%s: posted enough\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid));
+ break;
+ }
- if (conn->ibc_credits == 0) /* no credits */
- GOTO(out, 1);
+ if (consume_cred) {
+ if (conn->ibc_credits == 0) { /* no credits */
+ CDEBUG(D_NET, "%s: no credits\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid));
+ break;
+ }
+
+ if (conn->ibc_credits == 1 && /* last credit reserved for */
+ conn->ibc_outstanding_credits == 0) { /* giving back credits */
+ CDEBUG(D_NET, "%s: not using last credit\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid));
+ break;
+ }
+ }
- if (conn->ibc_credits == 1 && /* last credit reserved for */
- conn->ibc_outstanding_credits == 0) /* giving back credits */
- GOTO(out, 2);
-
list_del (&tx->tx_list);
+ tx->tx_queued = 0;
+
+ /* NB don't drop ibc_lock before bumping tx_sending */
if (tx->tx_msg->ibm_type == IBNAL_MSG_NOOP &&
(!list_empty(&conn->ibc_tx_queue) ||
- conn->ibc_outstanding_credits < IBNAL_CREDIT_HIGHWATER)) {
+ !list_empty(&conn->ibc_tx_queue_nocred) ||
+ (conn->ibc_outstanding_credits < IBNAL_CREDIT_HIGHWATER &&
+ !kibnal_send_keepalive(conn)))) {
/* redundant NOOP */
- spin_unlock_irqrestore(&conn->ibc_lock, flags);
+ spin_unlock(&conn->ibc_lock);
kibnal_tx_done(tx);
- spin_lock_irqsave(&conn->ibc_lock, flags);
+ spin_lock(&conn->ibc_lock);
+ CDEBUG(D_NET, "%s: redundant noop\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid));
continue;
}
- tx->tx_msg->ibm_credits = conn->ibc_outstanding_credits;
- conn->ibc_outstanding_credits = 0;
+ kibnal_pack_msg(tx->tx_msg, conn->ibc_version,
+ conn->ibc_outstanding_credits,
+ conn->ibc_peer->ibp_nid, conn->ibc_incarnation,
+ conn->ibc_txseq);
+ conn->ibc_txseq++;
+ conn->ibc_outstanding_credits = 0;
conn->ibc_nsends_posted++;
- conn->ibc_credits--;
+ if (consume_cred)
+ conn->ibc_credits--;
+
+ /* CAVEAT EMPTOR! This tx could be the PUT_DONE of an RDMA
+ * PUT. If so, it was first queued here as a PUT_REQ, sent and
+ * stashed on ibc_active_txs, matched by an incoming PUT_ACK,
+ * and then re-queued here. It's (just) possible that
+ * tx_sending is non-zero if we've not done the tx_complete() from
+ * the first send; hence the ++ rather than = below. */
+ tx->tx_sending++;
- /* we only get a tx completion for the final rdma op */
- tx->tx_sending = min(tx->tx_nsp, 2);
- tx->tx_passive_rdma_wait = tx->tx_passive_rdma;
list_add (&tx->tx_list, &conn->ibc_active_txs);
-#if IBNAL_CKSUM
- tx->tx_msg->ibm_cksum = 0;
- tx->tx_msg->ibm_cksum = kibnal_cksum(tx->tx_msg, tx->tx_msg->ibm_nob);
- CDEBUG(D_NET, "cksum %x, nob %d\n", tx->tx_msg->ibm_cksum, tx->tx_msg->ibm_nob);
-#endif
- spin_unlock_irqrestore (&conn->ibc_lock, flags);
-
- /* NB the gap between removing tx from the queue and sending it
- * allows message re-ordering to occur */
-
- LASSERT (tx->tx_nsp > 0);
-
- rc = -ECONNABORTED;
- nwork = 0;
- if (conn->ibc_state == IBNAL_CONN_ESTABLISHED) {
- tx->tx_status = 0;
- /* Driver only accepts 1 item at a time */
- for (i = 0; i < tx->tx_nsp; i++) {
- hexdump("tx", tx->tx_msg, sizeof(kib_msg_t));
- rc = iibt_postsend(conn->ibc_qp,
- &tx->tx_wrq[i]);
- if (rc != 0)
- break;
- if (wrq_signals_completion(&tx->tx_wrq[i]))
- nwork++;
- CDEBUG(D_NET, "posted tx wrq %p\n",
- &tx->tx_wrq[i]);
- }
+
+ LASSERT (tx->tx_nwrq > 0);
+
+ rc = 0;
+ frc = FSUCCESS;
+ if (conn->ibc_state != IBNAL_CONN_ESTABLISHED) {
+ rc = -ECONNABORTED;
+ } else {
+ frc = iba_post_send2(conn->ibc_qp, tx->tx_wrq, NULL);
+ if (frc != FSUCCESS)
+ rc = -EIO;
}
- spin_lock_irqsave (&conn->ibc_lock, flags);
+ conn->ibc_last_send = jiffies;
+
if (rc != 0) {
/* NB credits are transferred in the actual
* message, which can only be the last work item */
conn->ibc_outstanding_credits += tx->tx_msg->ibm_credits;
- conn->ibc_credits++;
+ if (consume_cred)
+ conn->ibc_credits++;
conn->ibc_nsends_posted--;
tx->tx_status = rc;
- tx->tx_passive_rdma_wait = 0;
- tx->tx_sending -= tx->tx_nsp - nwork;
-
+ tx->tx_waiting = 0;
+ tx->tx_sending--;
+
done = (tx->tx_sending == 0);
if (done)
list_del (&tx->tx_list);
- spin_unlock_irqrestore (&conn->ibc_lock, flags);
+ spin_unlock(&conn->ibc_lock);
if (conn->ibc_state == IBNAL_CONN_ESTABLISHED)
- CERROR ("Error %d posting transmit to "LPX64"\n",
- rc, conn->ibc_peer->ibp_nid);
+ CERROR ("Error %d posting transmit to %s\n",
+ frc, libcfs_nid2str(conn->ibc_peer->ibp_nid));
else
- CDEBUG (D_NET, "Error %d posting transmit to "
- LPX64"\n", rc, conn->ibc_peer->ibp_nid);
+ CDEBUG (D_NET, "Error %d posting transmit to %s\n",
+ rc, libcfs_nid2str(conn->ibc_peer->ibp_nid));
kibnal_close_conn (conn, rc);
kibnal_tx_done (tx);
return;
}
-
}
- EXIT;
-out:
- spin_unlock_irqrestore (&conn->ibc_lock, flags);
+ spin_unlock(&conn->ibc_lock);
}
-static void
-kibnal_tx_callback (IB_WORK_COMPLETION *wc)
+void
+kibnal_tx_complete (IB_WORK_COMPLETION *wc)
{
kib_tx_t *tx = (kib_tx_t *)kibnal_wreqid2ptr(wc->WorkReqId);
- kib_conn_t *conn;
- unsigned long flags;
+ kib_conn_t *conn = tx->tx_conn;
+ int failed = wc->Status != WRStatusSuccess;
int idle;
- conn = tx->tx_conn;
- LASSERT (conn != NULL);
- LASSERT (tx->tx_sending != 0);
+ CDEBUG(D_NET, "%s: sending %d nwrq %d status %d\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid),
+ tx->tx_sending, tx->tx_nwrq, wc->Status);
- spin_lock_irqsave(&conn->ibc_lock, flags);
+ LASSERT (tx->tx_sending > 0);
+
+ if (failed &&
+ tx->tx_status == 0 &&
+ conn->ibc_state == IBNAL_CONN_ESTABLISHED) {
+#if KIBLND_DETAILED_DEBUG
+ int i;
+ IB_WORK_REQ2 *wrq = &tx->tx_wrq[0];
+ IB_LOCAL_DATASEGMENT *gl = &tx->tx_gl[0];
+ lnet_msg_t *lntmsg = tx->tx_lntmsg[0];
+#endif
+ CDEBUG(D_NETERROR, "tx -> %s type %x cookie "LPX64
+ " sending %d waiting %d failed %d nwrk %d\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid),
+ tx->tx_msg->ibm_type, tx->tx_cookie,
+ tx->tx_sending, tx->tx_waiting, wc->Status,
+ tx->tx_nwrq);
+#if KIBLND_DETAILED_DEBUG
+ for (i = 0; i < tx->tx_nwrq; i++, wrq++, gl++) {
+ switch (wrq->Operation) {
+ default:
+ CDEBUG(D_NETERROR, " [%3d] Addr %p Next %p OP %d "
+ "DSList %p(%p)/%d: "LPX64"/%d K %x\n",
+ i, wrq, wrq->Next, wrq->Operation,
+ wrq->DSList, gl, wrq->DSListDepth,
+ gl->Address, gl->Length, gl->Lkey);
+ break;
+ case WROpSend:
+ CDEBUG(D_NETERROR, " [%3d] Addr %p Next %p SEND "
+ "DSList %p(%p)/%d: "LPX64"/%d K %x\n",
+ i, wrq, wrq->Next,
+ wrq->DSList, gl, wrq->DSListDepth,
+ gl->Address, gl->Length, gl->Lkey);
+ break;
+ case WROpRdmaWrite:
+ CDEBUG(D_NETERROR, " [%3d] Addr %p Next %p DMA "
+ "DSList: %p(%p)/%d "LPX64"/%d K %x -> "
+ LPX64" K %x\n",
+ i, wrq, wrq->Next,
+ wrq->DSList, gl, wrq->DSListDepth,
+ gl->Address, gl->Length, gl->Lkey,
+ wrq->Req.SendRC.RemoteDS.Address,
+ wrq->Req.SendRC.RemoteDS.Rkey);
+ break;
+ }
+ }
+
+ switch (tx->tx_msg->ibm_type) {
+ default:
+ CDEBUG(D_NETERROR, " msg type %x %p/%d, No RDMA\n",
+ tx->tx_msg->ibm_type,
+ tx->tx_msg, tx->tx_msg->ibm_nob);
+ break;
- CDEBUG(D_NET, "conn %p tx %p [%d/%d]: %d\n", conn, tx,
- tx->tx_sending, tx->tx_nsp, wc->Status);
+ case IBNAL_MSG_PUT_DONE:
+ case IBNAL_MSG_GET_DONE:
+ CDEBUG(D_NETERROR, " msg type %x %p/%d, RDMA key %x frags %d...\n",
+ tx->tx_msg->ibm_type,
+ tx->tx_msg, tx->tx_msg->ibm_nob,
+ tx->tx_rd->rd_key, tx->tx_rd->rd_nfrag);
+ for (i = 0; i < tx->tx_rd->rd_nfrag; i++)
+ CDEBUG(D_NETERROR, " [%d] "LPX64"/%d\n", i,
+ tx->tx_rd->rd_frags[i].rf_addr,
+ tx->tx_rd->rd_frags[i].rf_nob);
+ if (lntmsg == NULL) {
+ CDEBUG(D_NETERROR, " No lntmsg\n");
+ } else if (lntmsg->msg_iov != NULL) {
+ CDEBUG(D_NETERROR, " lntmsg in %d VIRT frags...\n",
+ lntmsg->msg_niov);
+ for (i = 0; i < lntmsg->msg_niov; i++)
+ CDEBUG(D_NETERROR, " [%d] %p/%d\n", i,
+ lntmsg->msg_iov[i].iov_base,
+ lntmsg->msg_iov[i].iov_len);
+ } else if (lntmsg->msg_kiov != NULL) {
+ CDEBUG(D_NETERROR, " lntmsg in %d PAGE frags...\n",
+ lntmsg->msg_niov);
+ for (i = 0; i < lntmsg->msg_niov; i++)
+ CDEBUG(D_NETERROR, " [%d] %p+%d/%d\n", i,
+ lntmsg->msg_kiov[i].kiov_page,
+ lntmsg->msg_kiov[i].kiov_offset,
+ lntmsg->msg_kiov[i].kiov_len);
+ } else {
+ CDEBUG(D_NETERROR, " lntmsg in %d frags\n",
+ lntmsg->msg_niov);
+ }
+
+ break;
+ }
+#endif
+ }
+
+ spin_lock(&conn->ibc_lock);
/* I could be racing with rdma completion. Whoever makes 'tx' idle
- * gets to free it, which also drops its ref on 'conn'. If it's
- * not me, then I take an extra ref on conn so it can't disappear
- * under me. */
+ * gets to free it, which also drops its ref on 'conn'. */
tx->tx_sending--;
+ conn->ibc_nsends_posted--;
+
+ if (failed) {
+ tx->tx_waiting = 0;
+ tx->tx_status = -EIO;
+ }
+
idle = (tx->tx_sending == 0) && /* This is the final callback */
- (!tx->tx_passive_rdma_wait); /* Not waiting for RDMA completion */
+ !tx->tx_waiting && /* Not waiting for peer */
+ !tx->tx_queued; /* Not re-queued (PUT_DONE) */
if (idle)
list_del(&tx->tx_list);
- CDEBUG(D_NET, "++conn[%p] state %d -> "LPX64" (%d)\n",
- conn, conn->ibc_state, conn->ibc_peer->ibp_nid,
- atomic_read (&conn->ibc_refcount));
- atomic_inc (&conn->ibc_refcount);
-
- if (tx->tx_sending == 0)
- conn->ibc_nsends_posted--;
+ kibnal_conn_addref(conn); /* 1 ref for me.... */
- if (wc->Status != WRStatusSuccess &&
- tx->tx_status == 0)
- tx->tx_status = -ECONNABORTED;
-
- spin_unlock_irqrestore(&conn->ibc_lock, flags);
+ spin_unlock(&conn->ibc_lock);
if (idle)
kibnal_tx_done (tx);
- if (wc->Status != WRStatusSuccess) {
- CERROR ("Tx completion to "LPX64" failed: %d\n",
- conn->ibc_peer->ibp_nid, wc->Status);
- kibnal_close_conn (conn, -ENETDOWN);
+ if (failed) {
+ kibnal_close_conn (conn, -EIO);
} else {
- /* can I shovel some more sends out the door? */
+ kibnal_peer_alive(conn->ibc_peer);
kibnal_check_sends(conn);
}
- kibnal_put_conn (conn);
-}
-
-void
-kibnal_ca_async_callback (void *ca_arg, IB_EVENT_RECORD *ev)
-{
- /* XXX flesh out. this seems largely for async errors */
- CERROR("type: %d code: %u\n", ev->EventType, ev->EventCode);
-}
-
-void
-kibnal_ca_callback (void *ca_arg, void *cq_arg)
-{
- IB_HANDLE cq = *(IB_HANDLE *)cq_arg;
- IB_HANDLE ca = *(IB_HANDLE *)ca_arg;
- IB_WORK_COMPLETION wc;
- int armed = 0;
-
- CDEBUG(D_NET, "ca %p cq %p\n", ca, cq);
-
- for(;;) {
- while (iibt_cq_poll(cq, &wc) == FSUCCESS) {
-
- /* We will need to rearm the CQ to avoid a potential race. */
- armed = 0;
-
- if (kibnal_wreqid_is_rx(wc.WorkReqId))
- kibnal_rx_callback(&wc);
- else
- kibnal_tx_callback(&wc);
- }
- if (armed)
- return;
- if (iibt_cq_rearm(cq, CQEventSelNextWC) != FSUCCESS) {
- CERROR("rearm failed?\n");
- return;
- }
- armed = 1;
- }
+ kibnal_conn_decref(conn); /* ...until here */
}
void
kibnal_init_tx_msg (kib_tx_t *tx, int type, int body_nob)
{
- IB_LOCAL_DATASEGMENT *gl = &tx->tx_gl[tx->tx_nsp];
- IB_WORK_REQ *wrq = &tx->tx_wrq[tx->tx_nsp];
- int fence;
- int nob = offsetof (kib_msg_t, ibm_u) + body_nob;
+ IB_LOCAL_DATASEGMENT *gl = &tx->tx_gl[tx->tx_nwrq];
+ IB_WORK_REQ2 *wrq = &tx->tx_wrq[tx->tx_nwrq];
+ int nob = offsetof (kib_msg_t, ibm_u) + body_nob;
- LASSERT (tx->tx_nsp >= 0 &&
- tx->tx_nsp < sizeof(tx->tx_wrq)/sizeof(tx->tx_wrq[0]));
+ LASSERT (tx->tx_nwrq >= 0 &&
+ tx->tx_nwrq < (1 + IBNAL_MAX_RDMA_FRAGS));
LASSERT (nob <= IBNAL_MSG_SIZE);
-
- tx->tx_msg->ibm_magic = IBNAL_MSG_MAGIC;
- tx->tx_msg->ibm_version = IBNAL_MSG_VERSION;
- tx->tx_msg->ibm_type = type;
-#if IBNAL_CKSUM
- tx->tx_msg->ibm_nob = nob;
-#endif
- /* Fence the message if it's bundled with an RDMA read */
- fence = (tx->tx_nsp > 0) &&
- (type == IBNAL_MSG_PUT_DONE);
+
+ kibnal_init_msg(tx->tx_msg, type, body_nob);
*gl = (IB_LOCAL_DATASEGMENT) {
- .Address = tx->tx_vaddr,
+ .Address = tx->tx_hca_msg,
.Length = IBNAL_MSG_SIZE,
- .Lkey = kibnal_lkey(kibnal_data.kib_tx_pages),
+ .Lkey = kibnal_data.kib_whole_mem.md_lkey,
};
- wrq->WorkReqId = kibnal_ptr2wreqid(tx, 0);
+ wrq->Next = NULL; /* This is the last one */
+
+ wrq->WorkReqId = kibnal_ptr2wreqid(tx, IBNAL_WID_TX);
wrq->Operation = WROpSend;
wrq->DSList = gl;
wrq->DSListDepth = 1;
wrq->Req.SendRC.Options.s.SolicitedEvent = 1;
wrq->Req.SendRC.Options.s.SignaledCompletion = 1;
wrq->Req.SendRC.Options.s.ImmediateData = 0;
- wrq->Req.SendRC.Options.s.Fence = fence;
-
- tx->tx_nsp++;
+ wrq->Req.SendRC.Options.s.Fence = 0;
+ /* fence only needed on RDMA reads */
+
+ tx->tx_nwrq++;
}
-static void
-kibnal_queue_tx (kib_tx_t *tx, kib_conn_t *conn)
+int
+kibnal_init_rdma (kib_tx_t *tx, int type, int nob,
+ kib_rdma_desc_t *dstrd, __u64 dstcookie)
{
- unsigned long flags;
+ kib_msg_t *ibmsg = tx->tx_msg;
+ kib_rdma_desc_t *srcrd = tx->tx_rd;
+ IB_LOCAL_DATASEGMENT *gl;
+ IB_WORK_REQ2 *wrq;
+ int rc;
- spin_lock_irqsave(&conn->ibc_lock, flags);
+#if IBNAL_USE_FMR
+ LASSERT (tx->tx_nwrq == 0);
- kibnal_queue_tx_locked (tx, conn);
-
- spin_unlock_irqrestore(&conn->ibc_lock, flags);
-
- kibnal_check_sends(conn);
-}
+ gl = &tx->tx_gl[0];
+ gl->Length = nob;
+ gl->Address = srcrd->rd_addr;
+ gl->Lkey = srcrd->rd_key;
-static void
-kibnal_launch_tx (kib_tx_t *tx, ptl_nid_t nid)
-{
- unsigned long flags;
+ wrq = &tx->tx_wrq[0];
+
+ wrq->Next = wrq + 1;
+ wrq->WorkReqId = kibnal_ptr2wreqid(tx, IBNAL_WID_RDMA);
+ wrq->Operation = WROpRdmaWrite;
+ wrq->DSList = gl;
+ wrq->DSListDepth = 1;
+ wrq->MessageLen = nob;
+
+ wrq->Req.SendRC.ImmediateData = 0;
+ wrq->Req.SendRC.Options.s.SolicitedEvent = 0;
+ wrq->Req.SendRC.Options.s.SignaledCompletion = 0;
+ wrq->Req.SendRC.Options.s.ImmediateData = 0;
+ wrq->Req.SendRC.Options.s.Fence = 0;
+
+ wrq->Req.SendRC.RemoteDS.Address = dstrd->rd_addr;
+ wrq->Req.SendRC.RemoteDS.Rkey = dstrd->rd_key;
+
+ tx->tx_nwrq = 1;
+ rc = nob;
+#else
+ /* CAVEAT EMPTOR: this 'consumes' the frags in 'dstrd' */
+ int resid = nob;
+ kib_rdma_frag_t *srcfrag;
+ int srcidx;
+ kib_rdma_frag_t *dstfrag;
+ int dstidx;
+ int wrknob;
+
+ /* Called by scheduler */
+ LASSERT (!in_interrupt());
+
+ LASSERT (type == IBNAL_MSG_GET_DONE ||
+ type == IBNAL_MSG_PUT_DONE);
+
+ srcidx = dstidx = 0;
+ srcfrag = &srcrd->rd_frags[0];
+ dstfrag = &dstrd->rd_frags[0];
+ rc = resid;
+
+ while (resid > 0) {
+ if (srcidx >= srcrd->rd_nfrag) {
+ CERROR("Src buffer exhausted: %d frags\n", srcidx);
+ rc = -EPROTO;
+ break;
+ }
+
+ if (dstidx == dstrd->rd_nfrag) {
+ CERROR("Dst buffer exhausted: %d frags\n", dstidx);
+ rc = -EPROTO;
+ break;
+ }
+
+ if (tx->tx_nwrq == IBNAL_MAX_RDMA_FRAGS) {
+ CERROR("RDMA too fragmented: %d/%d src %d/%d dst frags\n",
+ srcidx, srcrd->rd_nfrag,
+ dstidx, dstrd->rd_nfrag);
+ rc = -EMSGSIZE;
+ break;
+ }
+
+ wrknob = MIN(MIN(srcfrag->rf_nob, dstfrag->rf_nob), resid);
+
+ gl = &tx->tx_gl[tx->tx_nwrq];
+ gl->Length = wrknob;
+ gl->Address = srcfrag->rf_addr;
+ gl->Lkey = srcrd->rd_key;
+
+ wrq = &tx->tx_wrq[tx->tx_nwrq];
+
+ wrq->Next = wrq + 1;
+ wrq->WorkReqId = kibnal_ptr2wreqid(tx, IBNAL_WID_RDMA);
+ wrq->Operation = WROpRdmaWrite;
+ wrq->DSList = gl;
+ wrq->DSListDepth = 1;
+ wrq->MessageLen = nob;
+
+ wrq->Req.SendRC.ImmediateData = 0;
+ wrq->Req.SendRC.Options.s.SolicitedEvent = 0;
+ wrq->Req.SendRC.Options.s.SignaledCompletion = 0;
+ wrq->Req.SendRC.Options.s.ImmediateData = 0;
+ wrq->Req.SendRC.Options.s.Fence = 0;
+
+ wrq->Req.SendRC.RemoteDS.Address = dstfrag->rf_addr;
+ wrq->Req.SendRC.RemoteDS.Rkey = dstrd->rd_key;
+
+ resid -= wrknob;
+ if (wrknob < srcfrag->rf_nob) {
+ srcfrag->rf_addr += wrknob;
+ srcfrag->rf_nob -= wrknob;
+ } else {
+ srcfrag++;
+ srcidx++;
+ }
+
+ if (wrknob < dstfrag->rf_nob) {
+ dstfrag->rf_addr += wrknob;
+ dstfrag->rf_nob -= wrknob;
+ } else {
+ dstfrag++;
+ dstidx++;
+ }
+
+ tx->tx_nwrq++;
+ }
+
+ if (rc < 0) /* no RDMA if completing with failure */
+ tx->tx_nwrq = 0;
+#endif
+
+ ibmsg->ibm_u.completion.ibcm_status = rc;
+ ibmsg->ibm_u.completion.ibcm_cookie = dstcookie;
+ kibnal_init_tx_msg(tx, type, sizeof (kib_completion_msg_t));
+
+ return rc;
+}
+
+void
+kibnal_queue_tx (kib_tx_t *tx, kib_conn_t *conn)
+{
+ spin_lock(&conn->ibc_lock);
+ kibnal_queue_tx_locked (tx, conn);
+ spin_unlock(&conn->ibc_lock);
+
+ kibnal_check_sends(conn);
+}
+
+void
+kibnal_schedule_active_connect_locked (kib_peer_t *peer, int proto_version)
+{
+ /* Called holding kib_global_lock exclusive with IRQs disabled */
+
+ peer->ibp_version = proto_version; /* proto version for new conn */
+ peer->ibp_connecting++; /* I'm connecting */
+ kibnal_peer_addref(peer); /* extra ref for connd */
+
+ spin_lock(&kibnal_data.kib_connd_lock);
+
+ list_add_tail (&peer->ibp_connd_list, &kibnal_data.kib_connd_peers);
+ wake_up (&kibnal_data.kib_connd_waitq);
+
+ spin_unlock(&kibnal_data.kib_connd_lock);
+}
+
+void
+kibnal_schedule_active_connect (kib_peer_t *peer, int proto_version)
+{
+ unsigned long flags;
+
+ write_lock_irqsave(&kibnal_data.kib_global_lock, flags);
+
+ kibnal_schedule_active_connect_locked(peer, proto_version);
+
+ write_unlock_irqrestore(&kibnal_data.kib_global_lock, flags);
+}
+
+void
+kibnal_launch_tx (kib_tx_t *tx, lnet_nid_t nid)
+{
kib_peer_t *peer;
kib_conn_t *conn;
+ unsigned long flags;
rwlock_t *g_lock = &kibnal_data.kib_global_lock;
+ int retry;
+ int rc;
/* If I get here, I've committed to send, so I complete the tx with
* failure on any problems */
LASSERT (tx->tx_conn == NULL); /* only set when assigned a conn */
- LASSERT (tx->tx_nsp > 0); /* work items have been set up */
+ LASSERT (tx->tx_nwrq > 0); /* work items have been set up */
- read_lock (g_lock);
+ for (retry = 0; ; retry = 1) {
+ read_lock_irqsave(g_lock, flags);
- peer = kibnal_find_peer_locked (nid);
- if (peer == NULL) {
- read_unlock (g_lock);
- tx->tx_status = -EHOSTUNREACH;
- kibnal_tx_done (tx);
- return;
- }
-
- conn = kibnal_find_conn_locked (peer);
- if (conn != NULL) {
- CDEBUG(D_NET, "++conn[%p] state %d -> "LPX64" (%d)\n",
- conn, conn->ibc_state, conn->ibc_peer->ibp_nid,
- atomic_read (&conn->ibc_refcount));
- atomic_inc (&conn->ibc_refcount); /* 1 ref for the tx */
- read_unlock (g_lock);
+ peer = kibnal_find_peer_locked (nid);
+ if (peer != NULL) {
+ conn = kibnal_find_conn_locked (peer);
+ if (conn != NULL) {
+ kibnal_conn_addref(conn); /* 1 ref for me... */
+ read_unlock_irqrestore(g_lock, flags);
+
+ kibnal_queue_tx (tx, conn);
+ kibnal_conn_decref(conn); /* ...to here */
+ return;
+ }
+ }
- kibnal_queue_tx (tx, conn);
- return;
- }
-
- /* Making one or more connections; I'll need a write lock... */
- read_unlock (g_lock);
- write_lock_irqsave (g_lock, flags);
+ /* Making one or more connections; I'll need a write lock... */
+ read_unlock(g_lock);
+ write_lock(g_lock);
- peer = kibnal_find_peer_locked (nid);
- if (peer == NULL) {
- write_unlock_irqrestore (g_lock, flags);
- tx->tx_status = -EHOSTUNREACH;
- kibnal_tx_done (tx);
- return;
+ peer = kibnal_find_peer_locked (nid);
+ if (peer != NULL)
+ break;
+
+ write_unlock_irqrestore(g_lock, flags);
+
+ if (retry) {
+ CERROR("Can't find peer %s\n", libcfs_nid2str(nid));
+
+ tx->tx_status = -EHOSTUNREACH;
+ tx->tx_waiting = 0;
+ kibnal_tx_done (tx);
+ return;
+ }
+
+ rc = kibnal_add_persistent_peer(nid);
+ if (rc != 0) {
+ CERROR("Can't add peer %s: %d\n",
+ libcfs_nid2str(nid), rc);
+
+ tx->tx_status = -EHOSTUNREACH;
+ tx->tx_waiting = 0;
+ kibnal_tx_done (tx);
+ return;
+ }
}
conn = kibnal_find_conn_locked (peer);
if (conn != NULL) {
/* Connection exists; queue message on it */
- CDEBUG(D_NET, "++conn[%p] state %d -> "LPX64" (%d)\n",
- conn, conn->ibc_state, conn->ibc_peer->ibp_nid,
- atomic_read (&conn->ibc_refcount));
- atomic_inc (&conn->ibc_refcount); /* 1 ref for the tx */
- write_unlock_irqrestore (g_lock, flags);
+ kibnal_conn_addref(conn); /* 1 ref for me... */
+ write_unlock_irqrestore(g_lock, flags);
kibnal_queue_tx (tx, conn);
+ kibnal_conn_decref(conn); /* ...until here */
return;
}
- if (peer->ibp_connecting == 0) {
- if (!time_after_eq(jiffies, peer->ibp_reconnect_time)) {
- write_unlock_irqrestore (g_lock, flags);
+ if (!kibnal_peer_connecting(peer)) {
+ if (!(peer->ibp_reconnect_interval == 0 || /* first attempt */
+ time_after_eq(jiffies, peer->ibp_reconnect_time))) {
+ write_unlock_irqrestore(g_lock, flags);
tx->tx_status = -EHOSTUNREACH;
+ tx->tx_waiting = 0;
kibnal_tx_done (tx);
return;
}
-
- peer->ibp_connecting = 1;
- kib_peer_addref(peer); /* extra ref for connd */
-
- spin_lock (&kibnal_data.kib_connd_lock);
-
- list_add_tail (&peer->ibp_connd_list,
- &kibnal_data.kib_connd_peers);
- wake_up (&kibnal_data.kib_connd_waitq);
-
- spin_unlock (&kibnal_data.kib_connd_lock);
+
+ kibnal_schedule_active_connect_locked(peer, IBNAL_MSG_VERSION);
}
/* A connection is being established; queue the message... */
list_add_tail (&tx->tx_list, &peer->ibp_tx_queue);
- write_unlock_irqrestore (g_lock, flags);
+ write_unlock_irqrestore(g_lock, flags);
}
-static ptl_err_t
-kibnal_start_passive_rdma (int type, ptl_nid_t nid,
- lib_msg_t *libmsg, ptl_hdr_t *hdr)
+void
+kibnal_txlist_done (struct list_head *txlist, int status)
{
- int nob = libmsg->md->length;
- kib_tx_t *tx;
- kib_msg_t *ibmsg;
- int rc;
- IB_ACCESS_CONTROL access = {0,};
-
- LASSERT (type == IBNAL_MSG_PUT_RDMA || type == IBNAL_MSG_GET_RDMA);
- LASSERT (nob > 0);
- LASSERT (!in_interrupt()); /* Mapping could block */
-
- access.s.MWBindable = 1;
- access.s.LocalWrite = 1;
- access.s.RdmaRead = 1;
- access.s.RdmaWrite = 1;
+ kib_tx_t *tx;
- tx = kibnal_get_idle_tx (1); /* May block; caller is an app thread */
- LASSERT (tx != NULL);
+ while (!list_empty (txlist)) {
+ tx = list_entry (txlist->next, kib_tx_t, tx_list);
- if ((libmsg->md->options & PTL_MD_KIOV) == 0)
- rc = kibnal_map_iov (tx, access,
- libmsg->md->md_niov,
- libmsg->md->md_iov.iov,
- 0, nob, 0);
- else
- rc = kibnal_map_kiov (tx, access,
- libmsg->md->md_niov,
- libmsg->md->md_iov.kiov,
- 0, nob, 0);
-
- if (rc != 0) {
- CERROR ("Can't map RDMA for "LPX64": %d\n", nid, rc);
- goto failed;
- }
-
- if (type == IBNAL_MSG_GET_RDMA) {
- /* reply gets finalized when tx completes */
- tx->tx_libmsg[1] = lib_create_reply_msg(&kibnal_lib,
- nid, libmsg);
- if (tx->tx_libmsg[1] == NULL) {
- CERROR ("Can't create reply for GET -> "LPX64"\n",
- nid);
- rc = -ENOMEM;
- goto failed;
- }
+ list_del (&tx->tx_list);
+ /* complete now */
+ tx->tx_waiting = 0;
+ tx->tx_status = status;
+ kibnal_tx_done (tx);
}
-
- tx->tx_passive_rdma = 1;
+}
- ibmsg = tx->tx_msg;
+int
+kibnal_send(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg)
+{
+ lnet_hdr_t *hdr = &lntmsg->msg_hdr;
+ int type = lntmsg->msg_type;
+ lnet_process_id_t target = lntmsg->msg_target;
+ int target_is_router = lntmsg->msg_target_is_router;
+ int routing = lntmsg->msg_routing;
+ unsigned int payload_niov = lntmsg->msg_niov;
+ struct iovec *payload_iov = lntmsg->msg_iov;
+ lnet_kiov_t *payload_kiov = lntmsg->msg_kiov;
+ unsigned int payload_offset = lntmsg->msg_offset;
+ unsigned int payload_nob = lntmsg->msg_len;
+ kib_msg_t *ibmsg;
+ kib_tx_t *tx;
+ int nob;
+ int rc;
- ibmsg->ibm_u.rdma.ibrm_hdr = *hdr;
- ibmsg->ibm_u.rdma.ibrm_cookie = tx->tx_passive_rdma_cookie;
- /* map_kiov alrady filled the rdma descs for the whole_mem case */
- if (!kibnal_whole_mem()) {
- ibmsg->ibm_u.rdma.rd_key = tx->tx_md.md_rkey;
- ibmsg->ibm_u.rdma.ibrm_desc[0].rd_addr = tx->tx_md.md_addr;
- ibmsg->ibm_u.rdma.ibrm_desc[0].rd_nob = nob;
- ibmsg->ibm_u.rdma.ibrm_num_descs = 1;
- }
+ /* NB 'private' is different depending on what we're sending.... */
- kibnal_init_tx_msg (tx, type,
- kib_rdma_msg_len(ibmsg->ibm_u.rdma.ibrm_num_descs));
+ CDEBUG(D_NET, "sending %d bytes in %d frags to %s\n",
+ payload_nob, payload_niov, libcfs_id2str(target));
- CDEBUG(D_NET, "Passive: %p cookie "LPX64", key %x, addr "
- LPX64", nob %d\n",
- tx, tx->tx_passive_rdma_cookie, tx->tx_md.md_rkey,
- tx->tx_md.md_addr, nob);
-
- /* libmsg gets finalized when tx completes. */
- tx->tx_libmsg[0] = libmsg;
+ LASSERT (payload_nob == 0 || payload_niov > 0);
+ LASSERT (payload_niov <= LNET_MAX_IOV);
- kibnal_launch_tx(tx, nid);
- return (PTL_OK);
+ /* Thread context */
+ LASSERT (!in_interrupt());
+ /* payload is either all vaddrs or all pages */
+ LASSERT (!(payload_kiov != NULL && payload_iov != NULL));
- failed:
- tx->tx_status = rc;
- kibnal_tx_done (tx);
- return (PTL_FAIL);
-}
+ switch (type) {
+ default:
+ LBUG();
+ return (-EIO);
+
+ case LNET_MSG_ACK:
+ LASSERT (payload_nob == 0);
+ break;
-void
-kibnal_start_active_rdma (int type, int status,
- kib_rx_t *rx, lib_msg_t *libmsg,
- unsigned int niov,
- struct iovec *iov, ptl_kiov_t *kiov,
- size_t offset, size_t nob)
-{
- kib_msg_t *rxmsg = rx->rx_msg;
- kib_msg_t *txmsg;
- kib_tx_t *tx;
- IB_ACCESS_CONTROL access = {0,};
- IB_WR_OP rdma_op;
- int rc;
- __u32 i;
+ case LNET_MSG_GET:
+ if (routing || target_is_router)
+ break; /* send IMMEDIATE */
+
+ /* is the REPLY message too small for RDMA? */
+ nob = offsetof(kib_msg_t, ibm_u.immediate.ibim_payload[lntmsg->msg_md->md_length]);
+ if (nob <= IBNAL_MSG_SIZE)
+ break; /* send IMMEDIATE */
+
+ tx = kibnal_get_idle_tx();
+ if (tx == NULL) {
+ CERROR("Can allocate txd for GET to %s: \n",
+ libcfs_nid2str(target.nid));
+ return -ENOMEM;
+ }
+
+ ibmsg = tx->tx_msg;
+ ibmsg->ibm_u.get.ibgm_hdr = *hdr;
+ ibmsg->ibm_u.get.ibgm_cookie = tx->tx_cookie;
+
+ if ((lntmsg->msg_md->md_options & LNET_MD_KIOV) == 0)
+ rc = kibnal_setup_rd_iov(tx, &ibmsg->ibm_u.get.ibgm_rd,
+ 0,
+ lntmsg->msg_md->md_niov,
+ lntmsg->msg_md->md_iov.iov,
+ 0, lntmsg->msg_md->md_length);
+ else
+ rc = kibnal_setup_rd_kiov(tx, &ibmsg->ibm_u.get.ibgm_rd,
+ 0,
+ lntmsg->msg_md->md_niov,
+ lntmsg->msg_md->md_iov.kiov,
+ 0, lntmsg->msg_md->md_length);
+ if (rc != 0) {
+ CERROR("Can't setup GET sink for %s: %d\n",
+ libcfs_nid2str(target.nid), rc);
+ kibnal_tx_done(tx);
+ return -EIO;
+ }
- CDEBUG(D_NET, "type %d, status %d, niov %d, offset %d, nob %d\n",
- type, status, niov, offset, nob);
+#if IBNAL_USE_FMR
+ nob = sizeof(kib_get_msg_t);
+#else
+ {
+ int n = ibmsg->ibm_u.get.ibgm_rd.rd_nfrag;
+
+ nob = offsetof(kib_get_msg_t, ibgm_rd.rd_frags[n]);
+ }
+#endif
+ kibnal_init_tx_msg(tx, IBNAL_MSG_GET_REQ, nob);
- /* Called by scheduler */
- LASSERT (!in_interrupt ());
+ tx->tx_lntmsg[1] = lnet_create_reply_msg(kibnal_data.kib_ni,
+ lntmsg);
+ if (tx->tx_lntmsg[1] == NULL) {
+ CERROR("Can't create reply for GET -> %s\n",
+ libcfs_nid2str(target.nid));
+ kibnal_tx_done(tx);
+ return -EIO;
+ }
- /* Either all pages or all vaddrs */
- LASSERT (!(kiov != NULL && iov != NULL));
+ tx->tx_lntmsg[0] = lntmsg; /* finalise lntmsg[0,1] on completion */
+ tx->tx_waiting = 1; /* waiting for GET_DONE */
+ kibnal_launch_tx(tx, target.nid);
+ return 0;
- /* No data if we're completing with failure */
- LASSERT (status == 0 || nob == 0);
+ case LNET_MSG_REPLY:
+ case LNET_MSG_PUT:
+ /* Is the payload small enough not to need RDMA? */
+ nob = offsetof(kib_msg_t, ibm_u.immediate.ibim_payload[payload_nob]);
+ if (nob <= IBNAL_MSG_SIZE)
+ break; /* send IMMEDIATE */
+
+ tx = kibnal_get_idle_tx();
+ if (tx == NULL) {
+ CERROR("Can't allocate %s txd for %s\n",
+ type == LNET_MSG_PUT ? "PUT" : "REPLY",
+ libcfs_nid2str(target.nid));
+ return -ENOMEM;
+ }
- LASSERT (type == IBNAL_MSG_GET_DONE ||
- type == IBNAL_MSG_PUT_DONE);
+ if (payload_kiov == NULL)
+ rc = kibnal_setup_rd_iov(tx, tx->tx_rd, 1,
+ payload_niov, payload_iov,
+ payload_offset, payload_nob);
+ else
+ rc = kibnal_setup_rd_kiov(tx, tx->tx_rd, 1,
+ payload_niov, payload_kiov,
+ payload_offset, payload_nob);
+ if (rc != 0) {
+ CERROR("Can't setup PUT src for %s: %d\n",
+ libcfs_nid2str(target.nid), rc);
+ kibnal_tx_done(tx);
+ return -EIO;
+ }
- /* Flag I'm completing the RDMA. Even if I fail to send the
- * completion message, I will have tried my best so further
- * attempts shouldn't be tried. */
- LASSERT (!rx->rx_rdma);
- rx->rx_rdma = 1;
+ ibmsg = tx->tx_msg;
+ ibmsg->ibm_u.putreq.ibprm_hdr = *hdr;
+ ibmsg->ibm_u.putreq.ibprm_cookie = tx->tx_cookie;
+ kibnal_init_tx_msg(tx, IBNAL_MSG_PUT_REQ, sizeof(kib_putreq_msg_t));
- if (type == IBNAL_MSG_GET_DONE) {
- rdma_op = WROpRdmaWrite;
- LASSERT (rxmsg->ibm_type == IBNAL_MSG_GET_RDMA);
- } else {
- access.s.LocalWrite = 1;
- rdma_op = WROpRdmaRead;
- LASSERT (rxmsg->ibm_type == IBNAL_MSG_PUT_RDMA);
+ tx->tx_lntmsg[0] = lntmsg; /* finalise lntmsg on completion */
+ tx->tx_waiting = 1; /* waiting for PUT_{ACK,NAK} */
+ kibnal_launch_tx(tx, target.nid);
+ return 0;
}
- tx = kibnal_get_idle_tx (0); /* Mustn't block */
+ /* send IMMEDIATE */
+
+ LASSERT (offsetof(kib_msg_t, ibm_u.immediate.ibim_payload[payload_nob])
+ <= IBNAL_MSG_SIZE);
+
+ tx = kibnal_get_idle_tx();
if (tx == NULL) {
- CERROR ("tx descs exhausted on RDMA from "LPX64
- " completing locally with failure\n",
- rx->rx_conn->ibc_peer->ibp_nid);
- lib_finalize (&kibnal_lib, NULL, libmsg, PTL_NO_SPACE);
- return;
+ CERROR ("Can't send %d to %s: tx descs exhausted\n",
+ type, libcfs_nid2str(target.nid));
+ return -ENOMEM;
}
- LASSERT (tx->tx_nsp == 0);
-
- if (nob == 0)
- GOTO(init_tx, 0);
-
- /* We actually need to transfer some data (the transfer
- * size could get truncated to zero when the incoming
- * message is matched) */
- if (kiov != NULL)
- rc = kibnal_map_kiov (tx, access, niov, kiov, offset, nob, 1);
+
+ ibmsg = tx->tx_msg;
+ ibmsg->ibm_u.immediate.ibim_hdr = *hdr;
+
+ if (payload_kiov != NULL)
+ lnet_copy_kiov2flat(IBNAL_MSG_SIZE, ibmsg,
+ offsetof(kib_msg_t, ibm_u.immediate.ibim_payload),
+ payload_niov, payload_kiov,
+ payload_offset, payload_nob);
else
- rc = kibnal_map_iov (tx, access, niov, iov, offset, nob, 1);
-
- if (rc != 0) {
- CERROR ("Can't map RDMA -> "LPX64": %d\n",
- rx->rx_conn->ibc_peer->ibp_nid, rc);
- /* We'll skip the RDMA and complete with failure. */
- status = rc;
- nob = 0;
- GOTO(init_tx, rc);
- }
-
- if (!kibnal_whole_mem()) {
- tx->tx_msg->ibm_u.rdma.rd_key = tx->tx_md.md_lkey;
- tx->tx_msg->ibm_u.rdma.ibrm_desc[0].rd_addr = tx->tx_md.md_addr;
- tx->tx_msg->ibm_u.rdma.ibrm_desc[0].rd_nob = nob;
- tx->tx_msg->ibm_u.rdma.ibrm_num_descs = 1;
- }
-
- /* XXX ugh. different page-sized hosts. */
- if (tx->tx_msg->ibm_u.rdma.ibrm_num_descs !=
- rxmsg->ibm_u.rdma.ibrm_num_descs) {
- CERROR("tx descs (%u) != rx descs (%u)\n",
- tx->tx_msg->ibm_u.rdma.ibrm_num_descs,
- rxmsg->ibm_u.rdma.ibrm_num_descs);
- /* We'll skip the RDMA and complete with failure. */
- status = rc;
- nob = 0;
- GOTO(init_tx, rc);
- }
-
- /* map_kiov filled in the rdma descs which describe our side of the
- * rdma transfer. */
- /* ibrm_num_descs was verified in rx_callback */
- for(i = 0; i < rxmsg->ibm_u.rdma.ibrm_num_descs; i++) {
- kib_rdma_desc_t *ldesc, *rdesc; /* local, remote */
- IB_LOCAL_DATASEGMENT *ds = &tx->tx_gl[i];
- IB_WORK_REQ *wrq = &tx->tx_wrq[i];
-
- ldesc = &tx->tx_msg->ibm_u.rdma.ibrm_desc[i];
- rdesc = &rxmsg->ibm_u.rdma.ibrm_desc[i];
-
- ds->Address = ldesc->rd_addr;
- ds->Length = ldesc->rd_nob;
- ds->Lkey = tx->tx_msg->ibm_u.rdma.rd_key;
-
- memset(wrq, 0, sizeof(*wrq));
- wrq->WorkReqId = kibnal_ptr2wreqid(tx, 0);
- wrq->Operation = rdma_op;
- wrq->DSList = ds;
- wrq->DSListDepth = 1;
- wrq->MessageLen = ds->Length;
- wrq->Req.SendRC.ImmediateData = 0;
- wrq->Req.SendRC.Options.s.SolicitedEvent = 0;
- wrq->Req.SendRC.Options.s.SignaledCompletion = 0;
- wrq->Req.SendRC.Options.s.ImmediateData = 0;
- wrq->Req.SendRC.Options.s.Fence = 0;
- wrq->Req.SendRC.RemoteDS.Address = rdesc->rd_addr;
- wrq->Req.SendRC.RemoteDS.Rkey = rxmsg->ibm_u.rdma.rd_key;
+ lnet_copy_iov2flat(IBNAL_MSG_SIZE, ibmsg,
+ offsetof(kib_msg_t, ibm_u.immediate.ibim_payload),
+ payload_niov, payload_iov,
+ payload_offset, payload_nob);
+
+ nob = offsetof(kib_immediate_msg_t, ibim_payload[payload_nob]);
+ kibnal_init_tx_msg (tx, IBNAL_MSG_IMMEDIATE, nob);
- /* only the last rdma post triggers tx completion */
- if (i == rxmsg->ibm_u.rdma.ibrm_num_descs - 1)
- wrq->Req.SendRC.Options.s.SignaledCompletion = 1;
+ tx->tx_lntmsg[0] = lntmsg; /* finalise lntmsg on completion */
+ kibnal_launch_tx(tx, target.nid);
+ return 0;
+}
- tx->tx_nsp++;
+void
+kibnal_reply(lnet_ni_t *ni, kib_rx_t *rx, lnet_msg_t *lntmsg)
+{
+ lnet_process_id_t target = lntmsg->msg_target;
+ unsigned int niov = lntmsg->msg_niov;
+ struct iovec *iov = lntmsg->msg_iov;
+ lnet_kiov_t *kiov = lntmsg->msg_kiov;
+ unsigned int offset = lntmsg->msg_offset;
+ unsigned int nob = lntmsg->msg_len;
+ kib_tx_t *tx;
+ int rc;
+
+ tx = kibnal_get_idle_tx();
+ if (tx == NULL) {
+ CERROR("Can't get tx for REPLY to %s\n",
+ libcfs_nid2str(target.nid));
+ goto failed_0;
}
-init_tx:
- txmsg = tx->tx_msg;
+ if (nob == 0)
+ rc = 0;
+ else if (kiov == NULL)
+ rc = kibnal_setup_rd_iov(tx, tx->tx_rd, 1,
+ niov, iov, offset, nob);
+ else
+ rc = kibnal_setup_rd_kiov(tx, tx->tx_rd, 1,
+ niov, kiov, offset, nob);
- txmsg->ibm_u.completion.ibcm_cookie = rxmsg->ibm_u.rdma.ibrm_cookie;
- txmsg->ibm_u.completion.ibcm_status = status;
+ if (rc != 0) {
+ CERROR("Can't setup GET src for %s: %d\n",
+ libcfs_nid2str(target.nid), rc);
+ goto failed_1;
+ }
- kibnal_init_tx_msg(tx, type, sizeof (kib_completion_msg_t));
-
- if (status == 0 && nob != 0) {
- LASSERT (tx->tx_nsp > 1);
- /* RDMA: libmsg gets finalized when the tx completes. This
- * is after the completion message has been sent, which in
- * turn is after the RDMA has finished. */
- tx->tx_libmsg[0] = libmsg;
+ rc = kibnal_init_rdma(tx, IBNAL_MSG_GET_DONE, nob,
+ &rx->rx_msg->ibm_u.get.ibgm_rd,
+ rx->rx_msg->ibm_u.get.ibgm_cookie);
+ if (rc < 0) {
+ CERROR("Can't setup rdma for GET from %s: %d\n",
+ libcfs_nid2str(target.nid), rc);
+ goto failed_1;
+ }
+
+ if (rc == 0) {
+ /* No RDMA: local completion may happen now! */
+ lnet_finalize(ni, lntmsg, 0);
} else {
- LASSERT (tx->tx_nsp == 1);
- /* No RDMA: local completion happens now! */
- CDEBUG(D_WARNING,"No data: immediate completion\n");
- lib_finalize (&kibnal_lib, NULL, libmsg,
- status == 0 ? PTL_OK : PTL_FAIL);
- }
-
- /* +1 ref for this tx... */
- CDEBUG(D_NET, "++conn[%p] state %d -> "LPX64" (%d)\n",
- rx->rx_conn, rx->rx_conn->ibc_state,
- rx->rx_conn->ibc_peer->ibp_nid,
- atomic_read (&rx->rx_conn->ibc_refcount));
- atomic_inc (&rx->rx_conn->ibc_refcount);
- /* ...and queue it up */
+ /* RDMA: lnet_finalize(lntmsg) when it
+ * completes */
+ tx->tx_lntmsg[0] = lntmsg;
+ }
+
kibnal_queue_tx(tx, rx->rx_conn);
+ return;
+
+ failed_1:
+ kibnal_tx_done(tx);
+ failed_0:
+ lnet_finalize(ni, lntmsg, -EIO);
}
-static ptl_err_t
-kibnal_sendmsg(lib_nal_t *nal,
- void *private,
- lib_msg_t *libmsg,
- ptl_hdr_t *hdr,
- int type,
- ptl_nid_t nid,
- ptl_pid_t pid,
- unsigned int payload_niov,
- struct iovec *payload_iov,
- ptl_kiov_t *payload_kiov,
- size_t payload_offset,
- size_t payload_nob)
-{
- kib_msg_t *ibmsg;
- kib_tx_t *tx;
- int nob;
-
- /* NB 'private' is different depending on what we're sending.... */
-
- CDEBUG(D_NET, "sending "LPSZ" bytes in %d frags to nid:"LPX64
- " pid %d\n", payload_nob, payload_niov, nid , pid);
-
- LASSERT (payload_nob == 0 || payload_niov > 0);
- LASSERT (payload_niov <= PTL_MD_MAX_IOV);
+int
+kibnal_eager_recv (lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg,
+ void **new_private)
+{
+ kib_rx_t *rx = private;
+ kib_conn_t *conn = rx->rx_conn;
+
+ if (conn->ibc_version == IBNAL_MSG_VERSION_RDMAREPLYNOTRSRVD) {
+ /* Can't block if RDMA completions need normal credits */
+ LCONSOLE_ERROR_MSG(0x12d, "Dropping message from %s: no "
+ "buffers free. %s is running an old version"
+ " of LNET that may deadlock if messages "
+ "wait for buffers)\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid),
+ libcfs_nid2str(conn->ibc_peer->ibp_nid));
+ return -EDEADLK;
+ }
+
+ *new_private = private;
+ return 0;
+}
- /* Thread context if we're sending payload */
- LASSERT (!in_interrupt() || payload_niov == 0);
- /* payload is either all vaddrs or all pages */
- LASSERT (!(payload_kiov != NULL && payload_iov != NULL));
+int
+kibnal_recv (lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg, int delayed,
+ unsigned int niov, struct iovec *iov, lnet_kiov_t *kiov,
+ unsigned int offset, unsigned int mlen, unsigned int rlen)
+{
+ kib_rx_t *rx = private;
+ kib_msg_t *rxmsg = rx->rx_msg;
+ kib_conn_t *conn = rx->rx_conn;
+ kib_tx_t *tx;
+ kib_msg_t *txmsg;
+ int nob;
+ int post_cred = 1;
+ int rc = 0;
+
+ LASSERT (mlen <= rlen);
+ LASSERT (!in_interrupt());
+ /* Either all pages or all vaddrs */
+ LASSERT (!(kiov != NULL && iov != NULL));
- switch (type) {
+ switch (rxmsg->ibm_type) {
default:
LBUG();
- return (PTL_FAIL);
- case PTL_MSG_REPLY: {
- /* reply's 'private' is the incoming receive */
- kib_rx_t *rx = private;
-
- /* RDMA reply expected? */
- if (rx->rx_msg->ibm_type == IBNAL_MSG_GET_RDMA) {
- kibnal_start_active_rdma(IBNAL_MSG_GET_DONE, 0,
- rx, libmsg, payload_niov,
- payload_iov, payload_kiov,
- payload_offset, payload_nob);
- return (PTL_OK);
+ case IBNAL_MSG_IMMEDIATE:
+ nob = offsetof(kib_msg_t, ibm_u.immediate.ibim_payload[rlen]);
+ if (nob > rx->rx_nob) {
+ CERROR ("Immediate message from %s too big: %d(%d)\n",
+ libcfs_nid2str(rxmsg->ibm_u.immediate.ibim_hdr.src_nid),
+ nob, rx->rx_nob);
+ rc = -EPROTO;
+ break;
+ }
+
+ if (kiov != NULL)
+ lnet_copy_flat2kiov(niov, kiov, offset,
+ IBNAL_MSG_SIZE, rxmsg,
+ offsetof(kib_msg_t, ibm_u.immediate.ibim_payload),
+ mlen);
+ else
+ lnet_copy_flat2iov(niov, iov, offset,
+ IBNAL_MSG_SIZE, rxmsg,
+ offsetof(kib_msg_t, ibm_u.immediate.ibim_payload),
+ mlen);
+ lnet_finalize (ni, lntmsg, 0);
+ break;
+
+ case IBNAL_MSG_PUT_REQ:
+ if (mlen == 0) {
+ lnet_finalize(ni, lntmsg, 0);
+ kibnal_send_completion(rx->rx_conn, IBNAL_MSG_PUT_NAK, 0,
+ rxmsg->ibm_u.putreq.ibprm_cookie);
+ break;
}
- /* Incoming message consistent with immediate reply? */
- if (rx->rx_msg->ibm_type != IBNAL_MSG_IMMEDIATE) {
- CERROR ("REPLY to "LPX64" bad opbm type %d!!!\n",
- nid, rx->rx_msg->ibm_type);
- return (PTL_FAIL);
+ tx = kibnal_get_idle_tx();
+ if (tx == NULL) {
+ CERROR("Can't allocate tx for %s\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid));
+ /* Not replying will break the connection */
+ rc = -ENOMEM;
+ break;
}
- /* Will it fit in a message? */
- nob = offsetof(kib_msg_t, ibm_u.immediate.ibim_payload[payload_nob]);
- if (nob >= IBNAL_MSG_SIZE) {
- CERROR("REPLY for "LPX64" too big (RDMA not requested): %d\n",
- nid, payload_nob);
- return (PTL_FAIL);
+ txmsg = tx->tx_msg;
+ if (kiov == NULL)
+ rc = kibnal_setup_rd_iov(tx,
+ &txmsg->ibm_u.putack.ibpam_rd,
+ 0,
+ niov, iov, offset, mlen);
+ else
+ rc = kibnal_setup_rd_kiov(tx,
+ &txmsg->ibm_u.putack.ibpam_rd,
+ 0,
+ niov, kiov, offset, mlen);
+ if (rc != 0) {
+ CERROR("Can't setup PUT sink for %s: %d\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid), rc);
+ kibnal_tx_done(tx);
+ /* tell peer it's over */
+ kibnal_send_completion(rx->rx_conn, IBNAL_MSG_PUT_NAK, rc,
+ rxmsg->ibm_u.putreq.ibprm_cookie);
+ break;
}
- break;
- }
- case PTL_MSG_GET:
- /* might the REPLY message be big enough to need RDMA? */
- nob = offsetof(kib_msg_t, ibm_u.immediate.ibim_payload[libmsg->md->length]);
- if (nob > IBNAL_MSG_SIZE)
- return (kibnal_start_passive_rdma(IBNAL_MSG_GET_RDMA,
- nid, libmsg, hdr));
- break;
+ txmsg->ibm_u.putack.ibpam_src_cookie = rxmsg->ibm_u.putreq.ibprm_cookie;
+ txmsg->ibm_u.putack.ibpam_dst_cookie = tx->tx_cookie;
+#if IBNAL_USE_FMR
+ nob = sizeof(kib_putack_msg_t);
+#else
+ {
+ int n = tx->tx_msg->ibm_u.putack.ibpam_rd.rd_nfrag;
- case PTL_MSG_ACK:
- LASSERT (payload_nob == 0);
+ nob = offsetof(kib_putack_msg_t, ibpam_rd.rd_frags[n]);
+ }
+#endif
+ kibnal_init_tx_msg(tx, IBNAL_MSG_PUT_ACK, nob);
+
+ tx->tx_lntmsg[0] = lntmsg; /* finalise lntmsg on completion */
+ tx->tx_waiting = 1; /* waiting for PUT_DONE */
+ kibnal_queue_tx(tx, conn);
+
+ if (conn->ibc_version != IBNAL_MSG_VERSION_RDMAREPLYNOTRSRVD)
+ post_cred = 0; /* peer still owns 'rx' for sending PUT_DONE */
break;
- case PTL_MSG_PUT:
- /* Is the payload big enough to need RDMA? */
- nob = offsetof(kib_msg_t, ibm_u.immediate.ibim_payload[payload_nob]);
- if (nob > IBNAL_MSG_SIZE)
- return (kibnal_start_passive_rdma(IBNAL_MSG_PUT_RDMA,
- nid, libmsg, hdr));
-
+ case IBNAL_MSG_GET_REQ:
+ if (lntmsg != NULL) {
+ /* Optimized GET; RDMA lntmsg's payload */
+ kibnal_reply(ni, rx, lntmsg);
+ } else {
+ /* GET didn't match anything */
+ kibnal_send_completion(rx->rx_conn, IBNAL_MSG_GET_DONE,
+ -ENODATA,
+ rxmsg->ibm_u.get.ibgm_cookie);
+ }
break;
}
- tx = kibnal_get_idle_tx(!(type == PTL_MSG_ACK ||
- type == PTL_MSG_REPLY ||
- in_interrupt()));
- if (tx == NULL) {
- CERROR ("Can't send %d to "LPX64": tx descs exhausted%s\n",
- type, nid, in_interrupt() ? " (intr)" : "");
- return (PTL_NO_SPACE);
+ kibnal_post_rx(rx, post_cred, 0);
+ return rc;
+}
+
+int
+kibnal_thread_start (int (*fn)(void *arg), void *arg)
+{
+ long pid = kernel_thread (fn, arg, 0);
+
+ if (pid < 0)
+ return ((int)pid);
+
+ atomic_inc (&kibnal_data.kib_nthreads);
+ return (0);
+}
+
+void
+kibnal_thread_fini (void)
+{
+ atomic_dec (&kibnal_data.kib_nthreads);
+}
+
+void
+kibnal_peer_alive (kib_peer_t *peer)
+{
+ /* This is racy, but everyone's only writing cfs_time_current() */
+ peer->ibp_last_alive = cfs_time_current();
+ mb();
+}
+
+void
+kibnal_peer_notify (kib_peer_t *peer)
+{
+ time_t last_alive = 0;
+ int error = 0;
+ unsigned long flags;
+
+ read_lock_irqsave(&kibnal_data.kib_global_lock, flags);
+
+ if (list_empty(&peer->ibp_conns) &&
+ peer->ibp_accepting == 0 &&
+ peer->ibp_connecting == 0 &&
+ peer->ibp_error != 0) {
+ error = peer->ibp_error;
+ peer->ibp_error = 0;
+ last_alive = cfs_time_current_sec() -
+ cfs_duration_sec(cfs_time_current() -
+ peer->ibp_last_alive);
+ }
+
+ read_unlock_irqrestore(&kibnal_data.kib_global_lock, flags);
+
+ if (error != 0)
+ lnet_notify(kibnal_data.kib_ni, peer->ibp_nid, 0, last_alive);
+}
+
+void
+kibnal_schedule_conn (kib_conn_t *conn)
+{
+ unsigned long flags;
+
+ kibnal_conn_addref(conn); /* ++ref for connd */
+
+ spin_lock_irqsave(&kibnal_data.kib_connd_lock, flags);
+
+ list_add_tail (&conn->ibc_list, &kibnal_data.kib_connd_conns);
+ wake_up (&kibnal_data.kib_connd_waitq);
+
+ spin_unlock_irqrestore(&kibnal_data.kib_connd_lock, flags);
+}
+
+void
+kibnal_close_conn_locked (kib_conn_t *conn, int error)
+{
+ /* This just does the immediate housekeeping to start shutdown of an
+ * established connection. 'error' is zero for a normal shutdown.
+ * Caller holds kib_global_lock exclusively in irq context */
+ kib_peer_t *peer = conn->ibc_peer;
+
+ LASSERT (conn->ibc_state >= IBNAL_CONN_ESTABLISHED);
+
+ if (conn->ibc_state != IBNAL_CONN_ESTABLISHED)
+ return; /* already being handled */
+
+ /* NB Can't take ibc_lock here (could be in IRQ context), without
+ * risking deadlock, so access to ibc_{tx_queue,active_txs} is racey */
+
+ if (error == 0 &&
+ list_empty(&conn->ibc_tx_queue) &&
+ list_empty(&conn->ibc_tx_queue_rsrvd) &&
+ list_empty(&conn->ibc_tx_queue_nocred) &&
+ list_empty(&conn->ibc_active_txs)) {
+ CDEBUG(D_NET, "closing conn to %s"
+ " rx# "LPD64" tx# "LPD64"\n",
+ libcfs_nid2str(peer->ibp_nid),
+ conn->ibc_txseq, conn->ibc_rxseq);
+ } else {
+ CDEBUG(D_NETERROR, "Closing conn to %s: error %d%s%s%s%s"
+ " rx# "LPD64" tx# "LPD64"\n",
+ libcfs_nid2str(peer->ibp_nid), error,
+ list_empty(&conn->ibc_tx_queue) ? "" : "(sending)",
+ list_empty(&conn->ibc_tx_queue_rsrvd) ? "" : "(sending_rsrvd)",
+ list_empty(&conn->ibc_tx_queue_nocred) ? "" : "(sending_nocred)",
+ list_empty(&conn->ibc_active_txs) ? "" : "(waiting)",
+ conn->ibc_txseq, conn->ibc_rxseq);
+#if 0
+ /* can't skip down the queue without holding ibc_lock (see above) */
+ list_for_each(tmp, &conn->ibc_tx_queue) {
+ kib_tx_t *tx = list_entry(tmp, kib_tx_t, tx_list);
+
+ CERROR(" queued tx type %x cookie "LPX64
+ " sending %d waiting %d ticks %ld/%d\n",
+ tx->tx_msg->ibm_type, tx->tx_cookie,
+ tx->tx_sending, tx->tx_waiting,
+ (long)(tx->tx_deadline - jiffies), HZ);
+ }
+
+ list_for_each(tmp, &conn->ibc_active_txs) {
+ kib_tx_t *tx = list_entry(tmp, kib_tx_t, tx_list);
+
+ CERROR(" active tx type %x cookie "LPX64
+ " sending %d waiting %d ticks %ld/%d\n",
+ tx->tx_msg->ibm_type, tx->tx_cookie,
+ tx->tx_sending, tx->tx_waiting,
+ (long)(tx->tx_deadline - jiffies), HZ);
+ }
+#endif
}
- ibmsg = tx->tx_msg;
- ibmsg->ibm_u.immediate.ibim_hdr = *hdr;
+ list_del (&conn->ibc_list);
- if (payload_nob > 0) {
- if (payload_kiov != NULL)
- lib_copy_kiov2buf(ibmsg->ibm_u.immediate.ibim_payload,
- payload_niov, payload_kiov,
- payload_offset, payload_nob);
- else
- lib_copy_iov2buf(ibmsg->ibm_u.immediate.ibim_payload,
- payload_niov, payload_iov,
- payload_offset, payload_nob);
- }
+ if (list_empty (&peer->ibp_conns)) { /* no more conns */
+ if (peer->ibp_persistence == 0 && /* non-persistent peer */
+ kibnal_peer_active(peer)) /* still in peer table */
+ kibnal_unlink_peer_locked (peer);
- kibnal_init_tx_msg (tx, IBNAL_MSG_IMMEDIATE,
- offsetof(kib_immediate_msg_t,
- ibim_payload[payload_nob]));
+ peer->ibp_error = error; /* set/clear error on last conn */
+ }
- /* libmsg gets finalized when tx completes */
- tx->tx_libmsg[0] = libmsg;
+ kibnal_set_conn_state(conn, IBNAL_CONN_DISCONNECTING);
- kibnal_launch_tx(tx, nid);
- return (PTL_OK);
+ kibnal_schedule_conn(conn);
+ kibnal_conn_decref(conn); /* lose ibc_list's ref */
}
-static ptl_err_t
-kibnal_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)
+void
+kibnal_close_conn (kib_conn_t *conn, int error)
{
- return (kibnal_sendmsg(nal, private, cookie,
- hdr, type, nid, pid,
- payload_niov, payload_iov, NULL,
- payload_offset, payload_len));
-}
+ unsigned long flags;
+
+ write_lock_irqsave(&kibnal_data.kib_global_lock, flags);
-static ptl_err_t
-kibnal_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)
-{
- return (kibnal_sendmsg(nal, private, cookie,
- hdr, type, nid, pid,
- payload_niov, NULL, payload_kiov,
- payload_offset, payload_len));
+ kibnal_close_conn_locked (conn, error);
+
+ write_unlock_irqrestore(&kibnal_data.kib_global_lock, flags);
}
-static ptl_err_t
-kibnal_recvmsg (lib_nal_t *nal, void *private, lib_msg_t *libmsg,
- unsigned int niov, struct iovec *iov, ptl_kiov_t *kiov,
- size_t offset, size_t mlen, size_t rlen)
+void
+kibnal_handle_early_rxs(kib_conn_t *conn)
{
- kib_rx_t *rx = private;
- kib_msg_t *rxmsg = rx->rx_msg;
- int msg_nob;
-
- LASSERT (mlen <= rlen);
- LASSERT (!in_interrupt ());
- /* Either all pages or all vaddrs */
- LASSERT (!(kiov != NULL && iov != NULL));
+ unsigned long flags;
+ kib_rx_t *rx;
- switch (rxmsg->ibm_type) {
- default:
- LBUG();
- return (PTL_FAIL);
+ LASSERT (!in_interrupt());
+ LASSERT (conn->ibc_state >= IBNAL_CONN_ESTABLISHED);
+
+ write_lock_irqsave(&kibnal_data.kib_global_lock, flags);
+ while (!list_empty(&conn->ibc_early_rxs)) {
+ rx = list_entry(conn->ibc_early_rxs.next,
+ kib_rx_t, rx_list);
+ list_del(&rx->rx_list);
+ write_unlock_irqrestore(&kibnal_data.kib_global_lock, flags);
- case IBNAL_MSG_IMMEDIATE:
- msg_nob = offsetof(kib_msg_t, ibm_u.immediate.ibim_payload[rlen]);
- if (msg_nob > IBNAL_MSG_SIZE) {
- CERROR ("Immediate message from "LPX64" too big: %d\n",
- rxmsg->ibm_u.immediate.ibim_hdr.src_nid, rlen);
- return (PTL_FAIL);
- }
+ kibnal_handle_rx(rx);
+
+ write_lock_irqsave(&kibnal_data.kib_global_lock, flags);
+ }
+ write_unlock_irqrestore(&kibnal_data.kib_global_lock, flags);
+}
- if (kiov != NULL)
- lib_copy_buf2kiov(niov, kiov, offset,
- rxmsg->ibm_u.immediate.ibim_payload,
- mlen);
- else
- lib_copy_buf2iov(niov, iov, offset,
- rxmsg->ibm_u.immediate.ibim_payload,
- mlen);
+void
+kibnal_abort_txs(kib_conn_t *conn, struct list_head *txs)
+{
+ LIST_HEAD (zombies);
+ struct list_head *tmp;
+ struct list_head *nxt;
+ kib_tx_t *tx;
- lib_finalize (nal, NULL, libmsg, PTL_OK);
- return (PTL_OK);
+ spin_lock(&conn->ibc_lock);
- case IBNAL_MSG_GET_RDMA:
- /* We get called here just to discard any junk after the
- * GET hdr. */
- LASSERT (libmsg == NULL);
- lib_finalize (nal, NULL, libmsg, PTL_OK);
- return (PTL_OK);
+ list_for_each_safe (tmp, nxt, txs) {
+ tx = list_entry (tmp, kib_tx_t, tx_list);
- case IBNAL_MSG_PUT_RDMA:
- kibnal_start_active_rdma (IBNAL_MSG_PUT_DONE, 0,
- rx, libmsg,
- niov, iov, kiov, offset, mlen);
- return (PTL_OK);
+ if (txs == &conn->ibc_active_txs) {
+ LASSERT (!tx->tx_queued);
+ LASSERT (tx->tx_waiting || tx->tx_sending != 0);
+ } else {
+ LASSERT (tx->tx_queued);
+ }
+
+ tx->tx_status = -ECONNABORTED;
+ tx->tx_queued = 0;
+ tx->tx_waiting = 0;
+
+ if (tx->tx_sending == 0) {
+ list_del (&tx->tx_list);
+ list_add (&tx->tx_list, &zombies);
+ }
}
-}
-static ptl_err_t
-kibnal_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)
-{
- return (kibnal_recvmsg (nal, private, msg, niov, iov, NULL,
- offset, mlen, rlen));
+ spin_unlock(&conn->ibc_lock);
+
+ kibnal_txlist_done(&zombies, -ECONNABORTED);
}
-static ptl_err_t
-kibnal_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)
+void
+kibnal_conn_disconnected(kib_conn_t *conn)
{
- return (kibnal_recvmsg (nal, private, msg, niov, NULL, kiov,
- offset, mlen, rlen));
-}
+ static IB_QP_ATTRIBUTES_MODIFY qpam = {.RequestState = QPStateError};
-/*****************************************************************************
- * the rest of this file concerns connection management. active connetions
- * start with connect_peer, passive connections start with passive_callback.
- * active disconnects start with conn_close, cm_callback starts passive
- * disconnects and contains the guts of how the disconnect state machine
- * progresses.
- *****************************************************************************/
+ FSTATUS frc;
-int
-kibnal_thread_start (int (*fn)(void *arg), void *arg)
-{
- long pid = kernel_thread (fn, arg, 0);
+ LASSERT (conn->ibc_state >= IBNAL_CONN_INIT_QP);
- if (pid < 0)
- return ((int)pid);
+ kibnal_set_conn_state(conn, IBNAL_CONN_DISCONNECTED);
- atomic_inc (&kibnal_data.kib_nthreads);
- return (0);
-}
+ /* move QP to error state to make posted work items complete */
+ frc = iba_modify_qp(conn->ibc_qp, &qpam, NULL);
+ if (frc != FSUCCESS)
+ CERROR("can't move qp state to error: %d\n", frc);
-static void
-kibnal_thread_fini (void)
-{
- atomic_dec (&kibnal_data.kib_nthreads);
+ /* Complete all tx descs not waiting for sends to complete.
+ * NB we should be safe from RDMA now that the QP has changed state */
+
+ kibnal_abort_txs(conn, &conn->ibc_tx_queue);
+ kibnal_abort_txs(conn, &conn->ibc_tx_queue_rsrvd);
+ kibnal_abort_txs(conn, &conn->ibc_tx_queue);
+ kibnal_abort_txs(conn, &conn->ibc_active_txs);
+
+ kibnal_handle_early_rxs(conn);
}
-/* this can be called by anyone at any time to close a connection. if
- * the connection is still established it heads to the connd to start
- * the disconnection in a safe context. It has no effect if called
- * on a connection that is already disconnecting */
void
-kibnal_close_conn_locked (kib_conn_t *conn, int error)
+kibnal_peer_connect_failed (kib_peer_t *peer, int type, int error)
{
- /* This just does the immmediate housekeeping, and schedules the
- * connection for the connd to finish off.
- * Caller holds kib_global_lock exclusively in irq context */
- kib_peer_t *peer = conn->ibc_peer;
+ LIST_HEAD (zombies);
+ unsigned long flags;
- KIB_ASSERT_CONN_STATE_RANGE(conn, IBNAL_CONN_CONNECTING,
- IBNAL_CONN_DISCONNECTED);
+ LASSERT (error != 0);
+ LASSERT (!in_interrupt());
- if (conn->ibc_state > IBNAL_CONN_ESTABLISHED)
- return; /* already disconnecting */
+ write_lock_irqsave(&kibnal_data.kib_global_lock, flags);
- CDEBUG (error == 0 ? D_NET : D_ERROR,
- "closing conn to "LPX64": error %d\n", peer->ibp_nid, error);
+ LASSERT (kibnal_peer_connecting(peer));
- if (conn->ibc_state == IBNAL_CONN_ESTABLISHED) {
- /* kib_connd_conns takes ibc_list's ref */
- list_del (&conn->ibc_list);
- } else {
- /* new ref for kib_connd_conns */
- CDEBUG(D_NET, "++conn[%p] state %d -> "LPX64" (%d)\n",
- conn, conn->ibc_state, conn->ibc_peer->ibp_nid,
- atomic_read (&conn->ibc_refcount));
- atomic_inc (&conn->ibc_refcount);
+ switch (type) {
+ case IBNAL_CONN_ACTIVE:
+ LASSERT (peer->ibp_connecting > 0);
+ peer->ibp_connecting--;
+ break;
+
+ case IBNAL_CONN_PASSIVE:
+ LASSERT (peer->ibp_accepting > 0);
+ peer->ibp_accepting--;
+ break;
+
+ case IBNAL_CONN_WAITING:
+ /* Can't assert; I might be racing with a successful connection
+ * which clears passivewait */
+ peer->ibp_passivewait = 0;
+ break;
+ default:
+ LBUG();
+ }
+
+ if (kibnal_peer_connecting(peer) || /* another attempt underway */
+ !list_empty(&peer->ibp_conns)) { /* got connected */
+ write_unlock_irqrestore (&kibnal_data.kib_global_lock, flags);
+ return;
}
+
+ /* Say when active connection can be re-attempted */
+ peer->ibp_reconnect_interval *= 2;
+ peer->ibp_reconnect_interval =
+ MAX(peer->ibp_reconnect_interval,
+ *kibnal_tunables.kib_min_reconnect_interval);
+ peer->ibp_reconnect_interval =
+ MIN(peer->ibp_reconnect_interval,
+ *kibnal_tunables.kib_max_reconnect_interval);
- if (list_empty (&peer->ibp_conns) &&
+ peer->ibp_reconnect_time = jiffies + peer->ibp_reconnect_interval * HZ;
+
+ /* Take peer's blocked transmits to complete with error */
+ list_add(&zombies, &peer->ibp_tx_queue);
+ list_del_init(&peer->ibp_tx_queue);
+
+ if (kibnal_peer_active(peer) &&
peer->ibp_persistence == 0) {
- /* Non-persistent peer with no more conns... */
+ /* failed connection attempt on non-persistent peer */
kibnal_unlink_peer_locked (peer);
}
- conn->ibc_state = IBNAL_CONN_SEND_DREQ;
+ peer->ibp_error = error;
+
+ write_unlock_irqrestore(&kibnal_data.kib_global_lock, flags);
- spin_lock (&kibnal_data.kib_connd_lock);
+ kibnal_peer_notify(peer);
- list_add_tail (&conn->ibc_list, &kibnal_data.kib_connd_conns);
- wake_up (&kibnal_data.kib_connd_waitq);
-
- spin_unlock (&kibnal_data.kib_connd_lock);
+ if (list_empty (&zombies))
+ return;
+
+ CDEBUG (D_NETERROR, "Deleting messages for %s: connection failed\n",
+ libcfs_nid2str(peer->ibp_nid));
+
+ kibnal_txlist_done (&zombies, -EHOSTUNREACH);
}
void
-kibnal_close_conn (kib_conn_t *conn, int error)
+kibnal_connreq_done (kib_conn_t *conn, int type, int status)
{
+ kib_peer_t *peer = conn->ibc_peer;
+ struct list_head txs;
+ kib_tx_t *tx;
unsigned long flags;
- write_lock_irqsave (&kibnal_data.kib_global_lock, flags);
+ LASSERT (!in_interrupt());
+ LASSERT (type == IBNAL_CONN_ACTIVE || type == IBNAL_CONN_PASSIVE);
+ LASSERT (conn->ibc_state >= IBNAL_CONN_INIT_QP);
+ LASSERT (conn->ibc_state < IBNAL_CONN_ESTABLISHED);
+ LASSERT (kibnal_peer_connecting(peer));
- kibnal_close_conn_locked (conn, error);
-
- write_unlock_irqrestore (&kibnal_data.kib_global_lock, flags);
-}
+ LIBCFS_FREE(conn->ibc_cvars, sizeof(*conn->ibc_cvars));
+ conn->ibc_cvars = NULL;
-static void
-kibnal_peer_connect_failed (kib_peer_t *peer, int active, int rc)
-{
- LIST_HEAD (zombies);
- kib_tx_t *tx;
- unsigned long flags;
+ if (status != 0) {
+ /* failed to establish connection */
+ kibnal_peer_connect_failed(conn->ibc_peer, type, status);
+ kibnal_conn_disconnected(conn);
+ kibnal_conn_decref(conn); /* Lose CM's ref */
+ return;
+ }
- LASSERT (rc != 0);
- LASSERT (peer->ibp_reconnect_interval >= IBNAL_MIN_RECONNECT_INTERVAL);
+ /* connection established */
+ LASSERT(conn->ibc_state == IBNAL_CONN_CONNECTING);
- write_lock_irqsave (&kibnal_data.kib_global_lock, flags);
+ conn->ibc_last_send = jiffies;
+ kibnal_set_conn_state(conn, IBNAL_CONN_ESTABLISHED);
+ kibnal_peer_alive(peer);
- LASSERT (peer->ibp_connecting != 0);
- peer->ibp_connecting--;
+ CDEBUG(D_NET, "Connection %s ESTABLISHED\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid));
- if (peer->ibp_connecting != 0) {
- /* another connection attempt under way (loopback?)... */
+ write_lock_irqsave(&kibnal_data.kib_global_lock, flags);
+
+ peer->ibp_passivewait = 0; /* not waiting (got conn now) */
+ kibnal_conn_addref(conn); /* +1 ref for ibc_list */
+ list_add_tail(&conn->ibc_list, &peer->ibp_conns);
+
+ if (!kibnal_peer_active(peer)) {
+ /* peer has been deleted */
+ kibnal_close_conn_locked(conn, -ECONNABORTED);
write_unlock_irqrestore (&kibnal_data.kib_global_lock, flags);
+
+ kibnal_peer_connect_failed(conn->ibc_peer, type, -ECONNABORTED);
+ kibnal_conn_decref(conn); /* lose CM's ref */
return;
}
-
- if (list_empty(&peer->ibp_conns)) {
- /* Say when active connection can be re-attempted */
- peer->ibp_reconnect_time = jiffies + peer->ibp_reconnect_interval;
- /* Increase reconnection interval */
- peer->ibp_reconnect_interval = MIN (peer->ibp_reconnect_interval * 2,
- IBNAL_MAX_RECONNECT_INTERVAL);
- /* Take peer's blocked blocked transmits; I'll complete
- * them with error */
- while (!list_empty (&peer->ibp_tx_queue)) {
- tx = list_entry (peer->ibp_tx_queue.next,
- kib_tx_t, tx_list);
-
- list_del (&tx->tx_list);
- list_add_tail (&tx->tx_list, &zombies);
- }
-
- if (kibnal_peer_active(peer) &&
- (peer->ibp_persistence == 0)) {
- /* failed connection attempt on non-persistent peer */
- kibnal_unlink_peer_locked (peer);
- }
- } else {
- /* Can't have blocked transmits if there are connections */
- LASSERT (list_empty(&peer->ibp_tx_queue));
+ switch (type) {
+ case IBNAL_CONN_ACTIVE:
+ LASSERT (peer->ibp_connecting > 0);
+ peer->ibp_connecting--;
+ break;
+
+ case IBNAL_CONN_PASSIVE:
+ LASSERT (peer->ibp_accepting > 0);
+ peer->ibp_accepting--;
+ break;
+ default:
+ LBUG();
}
- write_unlock_irqrestore (&kibnal_data.kib_global_lock, flags);
+ peer->ibp_reconnect_interval = 0; /* OK to reconnect at any time */
- if (!list_empty (&zombies))
- CERROR ("Deleting messages for "LPX64": connection failed\n",
- peer->ibp_nid);
+ /* Nuke any dangling conns from a different peer instance... */
+ kibnal_close_stale_conns_locked(peer, conn->ibc_incarnation);
- while (!list_empty (&zombies)) {
- tx = list_entry (zombies.next, kib_tx_t, tx_list);
+ /* grab txs blocking for a conn */
+ list_add(&txs, &peer->ibp_tx_queue);
+ list_del_init(&peer->ibp_tx_queue);
+ write_unlock_irqrestore(&kibnal_data.kib_global_lock, flags);
+
+ /* Schedule blocked txs */
+ spin_lock (&conn->ibc_lock);
+ while (!list_empty (&txs)) {
+ tx = list_entry (txs.next, kib_tx_t, tx_list);
list_del (&tx->tx_list);
- /* complete now */
- tx->tx_status = -EHOSTUNREACH;
- kibnal_tx_done (tx);
+
+ kibnal_queue_tx_locked (tx, conn);
}
+ spin_unlock (&conn->ibc_lock);
+ kibnal_check_sends (conn);
}
-static void
-kibnal_connreq_done (kib_conn_t *conn, int active, int status)
+void
+kibnal_reject (lnet_nid_t nid, IB_HANDLE cep, int why)
{
- int state = conn->ibc_state;
- kib_peer_t *peer = conn->ibc_peer;
- kib_tx_t *tx;
- unsigned long flags;
- int i;
-
- /* passive connection has no connreq & vice versa */
- LASSERTF(!active == !(conn->ibc_connreq != NULL),
- "%d %p\n", active, conn->ibc_connreq);
- if (active) {
- PORTAL_FREE (conn->ibc_connreq, sizeof (*conn->ibc_connreq));
- conn->ibc_connreq = NULL;
- }
-
- write_lock_irqsave (&kibnal_data.kib_global_lock, flags);
+ static CM_REJECT_INFO msgs[3];
+ CM_REJECT_INFO *msg = &msgs[why];
+ FSTATUS frc;
+
+ LASSERT (why >= 0 && why < sizeof(msgs)/sizeof(msgs[0]));
+
+ /* If I wasn't so lazy, I'd initialise this only once; it's effectively
+ * read-only... */
+ msg->Reason = RC_USER_REJ;
+ msg->PrivateData[0] = (IBNAL_MSG_MAGIC) & 0xff;
+ msg->PrivateData[1] = (IBNAL_MSG_MAGIC >> 8) & 0xff;
+ msg->PrivateData[2] = (IBNAL_MSG_MAGIC >> 16) & 0xff;
+ msg->PrivateData[3] = (IBNAL_MSG_MAGIC >> 24) & 0xff;
+ msg->PrivateData[4] = (IBNAL_MSG_VERSION) & 0xff;
+ msg->PrivateData[5] = (IBNAL_MSG_VERSION >> 8) & 0xff;
+ msg->PrivateData[6] = why;
+
+ frc = iba_cm_reject(cep, msg);
+ if (frc != FSUCCESS)
+ CERROR("Error %d rejecting %s\n", frc, libcfs_nid2str(nid));
+}
- LASSERT (peer->ibp_connecting != 0);
-
- if (status == 0) {
- /* connection established... */
- KIB_ASSERT_CONN_STATE(conn, IBNAL_CONN_CONNECTING);
- conn->ibc_state = IBNAL_CONN_ESTABLISHED;
+void
+kibnal_check_connreject(kib_conn_t *conn, int type, CM_REJECT_INFO *rej)
+{
+ kib_peer_t *peer = conn->ibc_peer;
+ unsigned long flags;
+ int magic;
+ int version;
+ int why;
+
+ LASSERT (type == IBNAL_CONN_ACTIVE ||
+ type == IBNAL_CONN_PASSIVE);
+
+ CDEBUG(D_NET, "%s connection with %s rejected: %d\n",
+ (type == IBNAL_CONN_ACTIVE) ? "Active" : "Passive",
+ libcfs_nid2str(peer->ibp_nid), rej->Reason);
+
+ switch (rej->Reason) {
+ case RC_STALE_CONN:
+ if (type == IBNAL_CONN_PASSIVE) {
+ CERROR("Connection to %s rejected (stale QP)\n",
+ libcfs_nid2str(peer->ibp_nid));
+ } else {
+ CWARN("Connection from %s rejected (stale QP): "
+ "retrying...\n", libcfs_nid2str(peer->ibp_nid));
- if (!kibnal_peer_active(peer)) {
- /* ...but peer deleted meantime */
- status = -ECONNABORTED;
+ /* retry from scratch to allocate a new conn
+ * which will use a different QP */
+ kibnal_schedule_active_connect(peer, peer->ibp_version);
}
- } else {
- KIB_ASSERT_CONN_STATE_RANGE(conn, IBNAL_CONN_INIT_QP,
- IBNAL_CONN_CONNECTING);
- }
-
- if (status == 0) {
- /* Everything worked! */
- peer->ibp_connecting--;
+ /* An FCM_DISCONNECTED callback is still outstanding: give it a
+ * ref since kibnal_connreq_done() drops the CM's ref on conn
+ * on failure */
+ kibnal_conn_addref(conn);
+ break;
- /* +1 ref for ibc_list; caller(== CM)'s ref remains until
- * the IB_CM_IDLE callback */
- CDEBUG(D_NET, "++conn[%p] state %d -> "LPX64" (%d)\n",
- conn, conn->ibc_state, conn->ibc_peer->ibp_nid,
- atomic_read (&conn->ibc_refcount));
- atomic_inc (&conn->ibc_refcount);
- list_add (&conn->ibc_list, &peer->ibp_conns);
-
- /* reset reconnect interval for next attempt */
- peer->ibp_reconnect_interval = IBNAL_MIN_RECONNECT_INTERVAL;
+ case RC_USER_REJ:
+ magic = (rej->PrivateData[0]) |
+ (rej->PrivateData[1] << 8) |
+ (rej->PrivateData[2] << 16) |
+ (rej->PrivateData[3] << 24);
+ version = (rej->PrivateData[4]) |
+ (rej->PrivateData[5] << 8);
+ why = (rej->PrivateData[6]);
+
+ /* retry with old proto version */
+ if (magic == IBNAL_MSG_MAGIC &&
+ version == IBNAL_MSG_VERSION_RDMAREPLYNOTRSRVD &&
+ conn->ibc_version == IBNAL_MSG_VERSION &&
+ type != IBNAL_CONN_PASSIVE) {
+ /* retry with a new conn */
+ CWARN ("Connection to %s refused: "
+ "retrying with old protocol version 0x%x\n",
+ libcfs_nid2str(peer->ibp_nid), version);
+ kibnal_schedule_active_connect(peer, version);
+ break;
+ }
- /* post blocked sends to the new connection */
- spin_lock (&conn->ibc_lock);
-
- while (!list_empty (&peer->ibp_tx_queue)) {
- tx = list_entry (peer->ibp_tx_queue.next,
- kib_tx_t, tx_list);
-
- list_del (&tx->tx_list);
+ if (magic != IBNAL_MSG_MAGIC ||
+ version != IBNAL_MSG_VERSION) {
+ CERROR("%s connection with %s rejected "
+ "(magic/ver %08x/%d why %d): "
+ "incompatible protocol\n",
+ (type == IBNAL_CONN_ACTIVE) ?
+ "Active" : "Passive",
+ libcfs_nid2str(peer->ibp_nid),
+ magic, version, why);
+ break;
+ }
- /* +1 ref for each tx */
- CDEBUG(D_NET, "++conn[%p] state %d -> "LPX64" (%d)\n",
- conn, conn->ibc_state, conn->ibc_peer->ibp_nid,
- atomic_read (&conn->ibc_refcount));
- atomic_inc (&conn->ibc_refcount);
- kibnal_queue_tx_locked (tx, conn);
+ if (type == IBNAL_CONN_ACTIVE &&
+ why == IBNAL_REJECT_CONN_RACE) {
+ /* lost connection race */
+ CWARN("Connection to %s rejected: "
+ "lost connection race\n",
+ libcfs_nid2str(peer->ibp_nid));
+
+ write_lock_irqsave(&kibnal_data.kib_global_lock,
+ flags);
+
+ if (list_empty(&peer->ibp_conns)) {
+ peer->ibp_passivewait = 1;
+ peer->ibp_passivewait_deadline =
+ jiffies +
+ (*kibnal_tunables.kib_timeout * HZ);
+ }
+ write_unlock_irqrestore(&kibnal_data.kib_global_lock,
+ flags);
+ break;
}
-
- spin_unlock (&conn->ibc_lock);
- /* Nuke any dangling conns from a different peer instance... */
- kibnal_close_stale_conns_locked (conn->ibc_peer,
- conn->ibc_incarnation);
+ CERROR("%s connection with %s rejected: %d\n",
+ (type == IBNAL_CONN_ACTIVE) ? "Active" : "Passive",
+ libcfs_nid2str(peer->ibp_nid), why);
+ break;
- write_unlock_irqrestore (&kibnal_data.kib_global_lock, flags);
+ default:
+ CERROR("%s connection with %s rejected: %d\n",
+ (type == IBNAL_CONN_ACTIVE) ? "Active" : "Passive",
+ libcfs_nid2str(peer->ibp_nid), rej->Reason);
+ }
+
+ kibnal_connreq_done(conn, type, -ECONNREFUSED);
+}
- /* queue up all the receives */
- for (i = 0; i < IBNAL_RX_MSGS; i++) {
- /* +1 ref for rx desc */
- CDEBUG(D_NET, "++conn[%p] state %d -> "LPX64" (%d)\n",
- conn, conn->ibc_state, conn->ibc_peer->ibp_nid,
- atomic_read (&conn->ibc_refcount));
- atomic_inc (&conn->ibc_refcount);
+void
+kibnal_cm_disconnect_callback(kib_conn_t *conn, CM_CONN_INFO *info)
+{
+ CDEBUG(D_NET, "%s: state %d, status 0x%x\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid),
+ conn->ibc_state, info->Status);
+
+ LASSERT (conn->ibc_state >= IBNAL_CONN_ESTABLISHED);
- CDEBUG(D_NET, "RX[%d] %p->%p - "LPX64"\n",
- i, &conn->ibc_rxs[i], conn->ibc_rxs[i].rx_msg,
- conn->ibc_rxs[i].rx_vaddr);
+ switch (info->Status) {
+ default:
+ LBUG();
+ break;
- kibnal_post_rx (&conn->ibc_rxs[i], 0);
- }
+ case FCM_DISCONNECT_REQUEST:
+ /* Schedule conn to iba_cm_disconnect() if it wasn't already */
+ kibnal_close_conn (conn, 0);
+ break;
- kibnal_check_sends (conn);
- return;
+ case FCM_DISCONNECT_REPLY: /* peer acks my disconnect req */
+ case FCM_DISCONNECTED: /* end of TIME_WAIT */
+ CDEBUG(D_NET, "Connection %s disconnected.\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid));
+ kibnal_conn_decref(conn); /* Lose CM's ref */
+ break;
}
+}
- /* connection failed */
- if (state == IBNAL_CONN_CONNECTING) {
- /* schedule for connd to close */
- kibnal_close_conn_locked (conn, status);
- } else {
- /* Don't have a CM comm_id; just wait for refs to drain */
- conn->ibc_state = IBNAL_CONN_DISCONNECTED;
- }
+void
+kibnal_cm_passive_callback(IB_HANDLE cep, CM_CONN_INFO *info, void *arg)
+{
+ kib_conn_t *conn = arg;
- write_unlock_irqrestore (&kibnal_data.kib_global_lock, flags);
+ CDEBUG(D_NET, "status 0x%x\n", info->Status);
+
+ /* Established Connection Notifier */
+ switch (info->Status) {
+ default:
+ CERROR("Unexpected status %d on Connection %s\n",
+ info->Status, libcfs_nid2str(conn->ibc_peer->ibp_nid));
+ LBUG();
+ break;
+
+ case FCM_CONNECT_TIMEOUT:
+ kibnal_connreq_done(conn, IBNAL_CONN_PASSIVE, -ETIMEDOUT);
+ break;
+
+ case FCM_CONNECT_REJECT:
+ kibnal_check_connreject(conn, IBNAL_CONN_PASSIVE,
+ &info->Info.Reject);
+ break;
- kibnal_peer_connect_failed (conn->ibc_peer, active, status);
+ case FCM_CONNECT_ESTABLISHED:
+ kibnal_connreq_done(conn, IBNAL_CONN_PASSIVE, 0);
+ break;
- /* If we didn't establish the connection we don't have to pass
- * through the disconnect protocol before dropping the CM ref */
- if (state < IBNAL_CONN_CONNECTING)
- kibnal_put_conn (conn);
+ case FCM_DISCONNECT_REQUEST:
+ case FCM_DISCONNECT_REPLY:
+ case FCM_DISCONNECTED:
+ kibnal_cm_disconnect_callback(conn, info);
+ break;
+ }
}
-static int
-kibnal_accept (kib_conn_t **connp, IB_HANDLE *cep,
- ptl_nid_t nid, __u64 incarnation, int queue_depth)
+int
+kibnal_accept (kib_conn_t **connp, IB_HANDLE cep, kib_msg_t *msg, int nob)
{
- kib_conn_t *conn = kibnal_create_conn();
+ lnet_nid_t nid;
+ kib_conn_t *conn;
kib_peer_t *peer;
kib_peer_t *peer2;
unsigned long flags;
+ int rc;
+
+ rc = kibnal_unpack_msg(msg, 0, nob);
+ if (rc != 0) {
+ /* SILENT! kibnal_unpack_msg() complains if required */
+ kibnal_reject(LNET_NID_ANY, cep, IBNAL_REJECT_FATAL);
+ return -EPROTO;
+ }
- if (conn == NULL)
- return (-ENOMEM);
+ nid = msg->ibm_srcnid;
- if (queue_depth != IBNAL_MSG_QUEUE_SIZE) {
- CERROR("Can't accept "LPX64": bad queue depth %d (%d expected)\n",
- nid, queue_depth, IBNAL_MSG_QUEUE_SIZE);
- atomic_dec (&conn->ibc_refcount);
- kibnal_destroy_conn(conn);
- return (-EPROTO);
+ if (msg->ibm_version != IBNAL_MSG_VERSION)
+ CWARN("Connection from %s: old protocol version 0x%x\n",
+ libcfs_nid2str(nid), msg->ibm_version);
+
+ if (msg->ibm_type != IBNAL_MSG_CONNREQ) {
+ CERROR("Can't accept %s: bad request type %d (%d expected)\n",
+ libcfs_nid2str(nid), msg->ibm_type, IBNAL_MSG_CONNREQ);
+ kibnal_reject(nid, cep, IBNAL_REJECT_FATAL);
+ return -EPROTO;
+ }
+
+ if (msg->ibm_dstnid != kibnal_data.kib_ni->ni_nid) {
+ CERROR("Can't accept %s: bad dst NID %s (%s expected)\n",
+ libcfs_nid2str(nid),
+ libcfs_nid2str(msg->ibm_dstnid),
+ libcfs_nid2str(kibnal_data.kib_ni->ni_nid));
+ kibnal_reject(nid, cep, IBNAL_REJECT_FATAL);
+ return -EPROTO;
+ }
+
+ if (msg->ibm_u.connparams.ibcp_queue_depth != IBNAL_MSG_QUEUE_SIZE ||
+ msg->ibm_u.connparams.ibcp_max_msg_size > IBNAL_MSG_SIZE ||
+ msg->ibm_u.connparams.ibcp_max_frags > IBNAL_MAX_RDMA_FRAGS) {
+ CERROR("Reject %s: q %d sz %d frag %d, (%d %d %d expected)\n",
+ libcfs_nid2str(nid),
+ msg->ibm_u.connparams.ibcp_queue_depth,
+ msg->ibm_u.connparams.ibcp_max_msg_size,
+ msg->ibm_u.connparams.ibcp_max_frags,
+ IBNAL_MSG_QUEUE_SIZE,
+ IBNAL_MSG_SIZE,
+ IBNAL_MAX_RDMA_FRAGS);
+ kibnal_reject(nid, cep, IBNAL_REJECT_FATAL);
+ return -EPROTO;
+ }
+
+ conn = kibnal_create_conn(nid, msg->ibm_version);
+ if (conn == NULL) {
+ kibnal_reject(nid, cep, IBNAL_REJECT_NO_RESOURCES);
+ return -ENOMEM;
}
/* assume 'nid' is a new peer */
- peer = kibnal_create_peer (nid);
- if (peer == NULL) {
- CDEBUG(D_NET, "--conn[%p] state %d -> "LPX64" (%d)\n",
- conn, conn->ibc_state, conn->ibc_peer->ibp_nid,
- atomic_read (&conn->ibc_refcount));
- atomic_dec (&conn->ibc_refcount);
- kibnal_destroy_conn(conn);
- return (-ENOMEM);
+ rc = kibnal_create_peer(&peer, nid);
+ if (rc != 0) {
+ kibnal_conn_decref(conn);
+ kibnal_reject(nid, cep, IBNAL_REJECT_NO_RESOURCES);
+ return -ENOMEM;
}
write_lock_irqsave (&kibnal_data.kib_global_lock, flags);
+ if (kibnal_data.kib_listener_cep == NULL) { /* shutdown started */
+ write_unlock_irqrestore(&kibnal_data.kib_global_lock, flags);
+
+ kibnal_peer_decref(peer);
+ kibnal_conn_decref(conn);
+ kibnal_reject(nid, cep, IBNAL_REJECT_NO_RESOURCES);
+ return -ESHUTDOWN;
+ }
+
peer2 = kibnal_find_peer_locked(nid);
if (peer2 == NULL) {
/* peer table takes my ref on peer */
list_add_tail (&peer->ibp_list, kibnal_nid2peerlist(nid));
+ LASSERT (peer->ibp_connecting == 0);
} else {
- kib_peer_decref (peer);
+ kibnal_peer_decref(peer);
peer = peer2;
- }
- kib_peer_addref(peer); /* +1 ref for conn */
- peer->ibp_connecting++;
+ if (peer->ibp_connecting != 0 &&
+ peer->ibp_nid < kibnal_data.kib_ni->ni_nid) {
+ /* Resolve concurrent connection attempts in favour of
+ * the higher NID */
+ write_unlock_irqrestore(&kibnal_data.kib_global_lock,
+ flags);
+ kibnal_conn_decref(conn);
+ kibnal_reject(nid, cep, IBNAL_REJECT_CONN_RACE);
+ return -EALREADY;
+ }
+ }
- write_unlock_irqrestore (&kibnal_data.kib_global_lock, flags);
+ kibnal_peer_addref(peer); /* +1 ref for conn */
+ peer->ibp_accepting++;
+ kibnal_set_conn_state(conn, IBNAL_CONN_CONNECTING);
conn->ibc_peer = peer;
- conn->ibc_state = IBNAL_CONN_CONNECTING;
- /* conn->ibc_cep is set when cm_accept is called */
- conn->ibc_incarnation = incarnation;
+ conn->ibc_incarnation = msg->ibm_srcstamp;
conn->ibc_credits = IBNAL_MSG_QUEUE_SIZE;
+ conn->ibc_reserved_credits = IBNAL_MSG_QUEUE_SIZE;
+ LASSERT (conn->ibc_credits + conn->ibc_reserved_credits
+ <= IBNAL_RX_MSGS);
- *connp = conn;
- return (0);
-}
-
-static void kibnal_set_qp_state(IB_HANDLE *qp, IB_QP_STATE state)
-{
- IB_QP_ATTRIBUTES_MODIFY modify_attr = {0,};
- FSTATUS frc;
-
- modify_attr.RequestState = state;
+ write_unlock_irqrestore (&kibnal_data.kib_global_lock, flags);
- frc = iibt_qp_modify(qp, &modify_attr, NULL);
- if (frc != FSUCCESS)
- CERROR("couldn't set qp state to %d, error %d\n", state, frc);
+ *connp = conn;
+ return 0;
}
-static void kibnal_flush_pending(kib_conn_t *conn)
+void
+kibnal_listen_callback(IB_HANDLE cep, CM_CONN_INFO *info, void *arg)
{
- LIST_HEAD (zombies);
- struct list_head *tmp;
- struct list_head *nxt;
- kib_tx_t *tx;
- unsigned long flags;
- int done;
-
- /* NB we wait until the connection has closed before completing
- * outstanding passive RDMAs so we can be sure the network can't
- * touch the mapped memory any more. */
- KIB_ASSERT_CONN_STATE(conn, IBNAL_CONN_DISCONNECTED);
-
- /* set the QP to the error state so that we get flush callbacks
- * on our posted receives which can then drop their conn refs */
- kibnal_set_qp_state(conn->ibc_qp, QPStateError);
-
- spin_lock_irqsave (&conn->ibc_lock, flags);
-
- /* grab passive RDMAs not waiting for the tx callback */
- list_for_each_safe (tmp, nxt, &conn->ibc_active_txs) {
- tx = list_entry (tmp, kib_tx_t, tx_list);
-
- LASSERT (tx->tx_passive_rdma ||
- !tx->tx_passive_rdma_wait);
-
- LASSERT (tx->tx_passive_rdma_wait ||
- tx->tx_sending != 0);
-
- /* still waiting for tx callback? */
- if (!tx->tx_passive_rdma_wait)
- continue;
-
- tx->tx_status = -ECONNABORTED;
- tx->tx_passive_rdma_wait = 0;
- done = (tx->tx_sending == 0);
-
- if (!done)
- continue;
- list_del (&tx->tx_list);
- list_add (&tx->tx_list, &zombies);
- }
+ CM_REQUEST_INFO *req = &info->Info.Request;
+ CM_REPLY_INFO *rep;
+ kib_conn_t *conn;
+ FSTATUS frc;
+ int rc;
+
+ LASSERT(arg == NULL); /* no conn yet for passive */
- /* grab all blocked transmits */
- list_for_each_safe (tmp, nxt, &conn->ibc_tx_queue) {
- tx = list_entry (tmp, kib_tx_t, tx_list);
-
- list_del (&tx->tx_list);
- list_add (&tx->tx_list, &zombies);
+ CDEBUG(D_NET, "%x\n", info->Status);
+
+ if (info->Status == FCM_CONNECT_CANCEL) {
+ up(&kibnal_data.kib_listener_signal);
+ return;
}
- spin_unlock_irqrestore (&conn->ibc_lock, flags);
+ LASSERT (info->Status == FCM_CONNECT_REQUEST);
- while (!list_empty(&zombies)) {
- tx = list_entry (zombies.next, kib_tx_t, tx_list);
+ rc = kibnal_accept(&conn, cep, (kib_msg_t *)req->PrivateData,
+ CM_REQUEST_INFO_USER_LEN);
+ if (rc != 0) /* kibnal_accept has rejected */
+ return;
- list_del(&tx->tx_list);
- kibnal_tx_done (tx);
+ conn->ibc_cvars->cv_path = req->PathInfo.Path;
+
+ rc = kibnal_conn_rts(conn,
+ req->CEPInfo.QPN,
+ req->CEPInfo.OfferedInitiatorDepth,
+ req->CEPInfo.OfferedResponderResources,
+ req->CEPInfo.StartingPSN);
+ if (rc != 0) {
+ kibnal_reject(conn->ibc_peer->ibp_nid, cep,
+ IBNAL_REJECT_NO_RESOURCES);
+ kibnal_connreq_done(conn, IBNAL_CONN_PASSIVE, -ECONNABORTED);
+ return;
}
-}
-static void
-kibnal_reject (IB_HANDLE cep, uint16_t reason)
-{
- CM_REJECT_INFO *rej;
+ memset(&conn->ibc_cvars->cv_cmci, 0, sizeof(conn->ibc_cvars->cv_cmci));
+ rep = &conn->ibc_cvars->cv_cmci.Info.Reply;
- PORTAL_ALLOC(rej, sizeof(*rej));
- if (rej == NULL) /* PORTAL_ALLOC() will CERROR on failure */
- return;
+ rep->QPN = conn->ibc_cvars->cv_qpattrs.QPNumber;
+ rep->QKey = conn->ibc_cvars->cv_qpattrs.Qkey;
+ rep->StartingPSN = conn->ibc_cvars->cv_qpattrs.RecvPSN;
+ rep->EndToEndFlowControl = conn->ibc_cvars->cv_qpattrs.FlowControl;
+ rep->ArbInitiatorDepth = conn->ibc_cvars->cv_qpattrs.InitiatorDepth;
+ rep->ArbResponderResources = conn->ibc_cvars->cv_qpattrs.ResponderResources;
+ rep->TargetAckDelay = kibnal_data.kib_hca_attrs.LocalCaAckDelay;
+ rep->FailoverAccepted = IBNAL_FAILOVER_ACCEPTED;
+ rep->RnRRetryCount = req->CEPInfo.RnrRetryCount;
+
+ CLASSERT (CM_REPLY_INFO_USER_LEN >=
+ offsetof(kib_msg_t, ibm_u) + sizeof(kib_connparams_t));
- rej->Reason = reason;
- iibt_cm_reject(cep, rej);
- PORTAL_FREE(rej, sizeof(*rej));
-}
+ kibnal_pack_connmsg((kib_msg_t *)rep->PrivateData,
+ conn->ibc_version,
+ CM_REPLY_INFO_USER_LEN,
+ IBNAL_MSG_CONNACK,
+ conn->ibc_peer->ibp_nid, conn->ibc_incarnation);
-static FSTATUS
-kibnal_qp_rts(IB_HANDLE qp_handle, __u32 qpn, __u8 resp_res,
- IB_PATH_RECORD *path, __u8 init_depth, __u32 send_psn)
-{
- IB_QP_ATTRIBUTES_MODIFY modify_attr;
- FSTATUS frc;
- ENTRY;
+ LASSERT (conn->ibc_cep == NULL);
+ kibnal_set_conn_state(conn, IBNAL_CONN_CONNECTING);
- modify_attr = (IB_QP_ATTRIBUTES_MODIFY) {
- .RequestState = QPStateReadyToRecv,
- .RecvPSN = IBNAL_STARTING_PSN,
- .DestQPNumber = qpn,
- .ResponderResources = resp_res,
- .MinRnrTimer = UsecToRnrNakTimer(2000), /* 20 ms */
- .Attrs = (IB_QP_ATTR_RECVPSN |
- IB_QP_ATTR_DESTQPNUMBER |
- IB_QP_ATTR_RESPONDERRESOURCES |
- IB_QP_ATTR_DESTAV |
- IB_QP_ATTR_PATHMTU |
- IB_QP_ATTR_MINRNRTIMER),
- };
- GetAVFromPath(0, path, &modify_attr.PathMTU, NULL,
- &modify_attr.DestAV);
-
- frc = iibt_qp_modify(qp_handle, &modify_attr, NULL);
- if (frc != FSUCCESS)
- RETURN(frc);
-
- modify_attr = (IB_QP_ATTRIBUTES_MODIFY) {
- .RequestState = QPStateReadyToSend,
- .FlowControl = TRUE,
- .InitiatorDepth = init_depth,
- .SendPSN = send_psn,
- .LocalAckTimeout = path->PktLifeTime + 2, /* 2 or 1? */
- .RetryCount = IBNAL_RETRY,
- .RnrRetryCount = IBNAL_RNR_RETRY,
- .Attrs = (IB_QP_ATTR_FLOWCONTROL |
- IB_QP_ATTR_INITIATORDEPTH |
- IB_QP_ATTR_SENDPSN |
- IB_QP_ATTR_LOCALACKTIMEOUT |
- IB_QP_ATTR_RETRYCOUNT |
- IB_QP_ATTR_RNRRETRYCOUNT),
- };
+ frc = iba_cm_accept(cep,
+ &conn->ibc_cvars->cv_cmci,
+ NULL,
+ kibnal_cm_passive_callback, conn,
+ &conn->ibc_cep);
- frc = iibt_qp_modify(qp_handle, &modify_attr, NULL);
- RETURN(frc);
+ if (frc == FSUCCESS || frc == FPENDING)
+ return;
+
+ CERROR("iba_cm_accept(%s) failed: %d\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid), frc);
+ kibnal_connreq_done(conn, IBNAL_CONN_PASSIVE, -ECONNABORTED);
}
-static void
-kibnal_connect_reply (IB_HANDLE cep, CM_CONN_INFO *info, void *arg)
+void
+kibnal_check_connreply(kib_conn_t *conn, CM_REPLY_INFO *rep)
{
- IB_CA_ATTRIBUTES *ca_attr = &kibnal_data.kib_hca_attrs;
- kib_conn_t *conn = arg;
- kib_wire_connreq_t *wcr;
- CM_REPLY_INFO *rep = &info->Info.Reply;
- uint16_t reason;
- FSTATUS frc;
+ kib_msg_t *msg = (kib_msg_t *)rep->PrivateData;
+ lnet_nid_t nid = conn->ibc_peer->ibp_nid;
+ FSTATUS frc;
+ int rc;
- wcr = (kib_wire_connreq_t *)info->Info.Reply.PrivateData;
+ rc = kibnal_unpack_msg(msg, conn->ibc_version, CM_REPLY_INFO_USER_LEN);
+ if (rc != 0) {
+ CERROR ("Error %d unpacking connack from %s\n",
+ rc, libcfs_nid2str(nid));
+ kibnal_reject(nid, conn->ibc_cep, IBNAL_REJECT_FATAL);
+ kibnal_connreq_done(conn, IBNAL_CONN_ACTIVE, -EPROTO);
+ return;
+ }
+
+ if (msg->ibm_type != IBNAL_MSG_CONNACK) {
+ CERROR("Bad connack request type %d (%d expected) from %s\n",
+ msg->ibm_type, IBNAL_MSG_CONNREQ,
+ libcfs_nid2str(msg->ibm_srcnid));
+ kibnal_reject(nid, conn->ibc_cep, IBNAL_REJECT_FATAL);
+ kibnal_connreq_done(conn, IBNAL_CONN_ACTIVE, -EPROTO);
+ return;
+ }
- if (wcr->wcr_magic != cpu_to_le32(IBNAL_MSG_MAGIC)) {
- CERROR ("Can't connect "LPX64": bad magic %08x\n",
- conn->ibc_peer->ibp_nid, le32_to_cpu(wcr->wcr_magic));
- GOTO(reject, reason = RC_USER_REJ);
+ if (msg->ibm_srcnid != conn->ibc_peer->ibp_nid ||
+ msg->ibm_dstnid != kibnal_data.kib_ni->ni_nid ||
+ msg->ibm_dststamp != kibnal_data.kib_incarnation) {
+ CERROR("Stale connack from %s(%s): %s(%s), "LPX64"("LPX64")\n",
+ libcfs_nid2str(msg->ibm_srcnid),
+ libcfs_nid2str(conn->ibc_peer->ibp_nid),
+ libcfs_nid2str(msg->ibm_dstnid),
+ libcfs_nid2str(kibnal_data.kib_ni->ni_nid),
+ msg->ibm_dststamp, kibnal_data.kib_incarnation);
+ kibnal_reject(nid, conn->ibc_cep, IBNAL_REJECT_FATAL);
+ kibnal_connreq_done(conn, IBNAL_CONN_ACTIVE, -ESTALE);
+ return;
}
- if (wcr->wcr_version != cpu_to_le16(IBNAL_MSG_VERSION)) {
- CERROR ("Can't connect "LPX64": bad version %d\n",
- conn->ibc_peer->ibp_nid, le16_to_cpu(wcr->wcr_magic));
- GOTO(reject, reason = RC_USER_REJ);
- }
-
- if (wcr->wcr_queue_depth != cpu_to_le16(IBNAL_MSG_QUEUE_SIZE)) {
- CERROR ("Can't connect "LPX64": bad queue depth %d\n",
- conn->ibc_peer->ibp_nid,
- le16_to_cpu(wcr->wcr_queue_depth));
- GOTO(reject, reason = RC_USER_REJ);
+ if (msg->ibm_u.connparams.ibcp_queue_depth != IBNAL_MSG_QUEUE_SIZE ||
+ msg->ibm_u.connparams.ibcp_max_msg_size > IBNAL_MSG_SIZE ||
+ msg->ibm_u.connparams.ibcp_max_frags > IBNAL_MAX_RDMA_FRAGS) {
+ CERROR("Reject %s: q %d sz %d frag %d, (%d %d %d expected)\n",
+ libcfs_nid2str(msg->ibm_srcnid),
+ msg->ibm_u.connparams.ibcp_queue_depth,
+ msg->ibm_u.connparams.ibcp_max_msg_size,
+ msg->ibm_u.connparams.ibcp_max_frags,
+ IBNAL_MSG_QUEUE_SIZE,
+ IBNAL_MSG_SIZE,
+ IBNAL_MAX_RDMA_FRAGS);
+ kibnal_reject(nid, conn->ibc_cep, IBNAL_REJECT_FATAL);
+ kibnal_connreq_done(conn, IBNAL_CONN_ACTIVE, -EPROTO);
+ return;
}
- if (le64_to_cpu(wcr->wcr_nid) != conn->ibc_peer->ibp_nid) {
- CERROR ("Unexpected NID "LPX64" from "LPX64"\n",
- le64_to_cpu(wcr->wcr_nid), conn->ibc_peer->ibp_nid);
- GOTO(reject, reason = RC_USER_REJ);
- }
-
- CDEBUG(D_NET, "Connection %p -> "LPX64" REP_RECEIVED.\n",
- conn, conn->ibc_peer->ibp_nid);
+ CDEBUG(D_NET, "Connection %s REP_RECEIVED.\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid));
- conn->ibc_incarnation = le64_to_cpu(wcr->wcr_incarnation);
+ conn->ibc_incarnation = msg->ibm_srcstamp;
conn->ibc_credits = IBNAL_MSG_QUEUE_SIZE;
-
- frc = kibnal_qp_rts(conn->ibc_qp, rep->QPN,
- min_t(__u8, rep->ArbInitiatorDepth,
- ca_attr->MaxQPResponderResources),
- &conn->ibc_connreq->cr_path,
- min_t(__u8, rep->ArbResponderResources,
- ca_attr->MaxQPInitiatorDepth),
- rep->StartingPSN);
- if (frc != FSUCCESS) {
- CERROR("Connection %p -> "LPX64" QP RTS/RTR failed: %d\n",
- conn, conn->ibc_peer->ibp_nid, frc);
- GOTO(reject, reason = RC_NO_QP);
- }
-
- /* the callback arguments are ignored for an active accept */
- conn->ibc_connreq->cr_discarded.Status = FSUCCESS;
- frc = iibt_cm_accept(cep, &conn->ibc_connreq->cr_discarded,
- NULL, NULL, NULL, NULL);
- if (frc != FCM_CONNECT_ESTABLISHED) {
- CERROR("Connection %p -> "LPX64" CMAccept failed: %d\n",
- conn, conn->ibc_peer->ibp_nid, frc);
- kibnal_connreq_done (conn, 1, -ECONNABORTED);
- /* XXX don't call reject after accept fails? */
+ conn->ibc_reserved_credits = IBNAL_MSG_QUEUE_SIZE;
+ LASSERT (conn->ibc_credits + conn->ibc_reserved_credits
+ <= IBNAL_RX_MSGS);
+
+ rc = kibnal_conn_rts(conn,
+ rep->QPN,
+ rep->ArbInitiatorDepth,
+ rep->ArbResponderResources,
+ rep->StartingPSN);
+ if (rc != 0) {
+ kibnal_reject(nid, conn->ibc_cep, IBNAL_REJECT_NO_RESOURCES);
+ kibnal_connreq_done(conn, IBNAL_CONN_ACTIVE, -EIO);
return;
}
- CDEBUG(D_NET, "Connection %p -> "LPX64" Established\n",
- conn, conn->ibc_peer->ibp_nid);
-
- kibnal_connreq_done (conn, 1, 0);
- return;
+ memset(&conn->ibc_cvars->cv_cmci, 0, sizeof(conn->ibc_cvars->cv_cmci));
+
+ frc = iba_cm_accept(conn->ibc_cep,
+ &conn->ibc_cvars->cv_cmci,
+ NULL, NULL, NULL, NULL);
-reject:
- kibnal_reject(cep, reason);
- kibnal_connreq_done (conn, 1, -EPROTO);
+ if (frc == FCM_CONNECT_ESTABLISHED) {
+ kibnal_connreq_done(conn, IBNAL_CONN_ACTIVE, 0);
+ return;
+ }
+
+ CERROR("Connection %s CMAccept failed: %d\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid), frc);
+ kibnal_connreq_done(conn, IBNAL_CONN_ACTIVE, -ECONNABORTED);
}
-/* ib_cm.h has a wealth of information on the CM procedures */
-static void
-kibnal_cm_callback(IB_HANDLE cep, CM_CONN_INFO *info, void *arg)
+void
+kibnal_cm_active_callback(IB_HANDLE cep, CM_CONN_INFO *info, void *arg)
{
kib_conn_t *conn = arg;
CDEBUG(D_NET, "status 0x%x\n", info->Status);
- /* Established Connection Notifier */
switch (info->Status) {
default:
- CERROR("unknown status %d on Connection %p -> "LPX64"\n",
- info->Status, conn, conn->ibc_peer->ibp_nid);
+ CERROR("unknown status %d on Connection %s\n",
+ info->Status, libcfs_nid2str(conn->ibc_peer->ibp_nid));
LBUG();
break;
- case FCM_CONNECT_REPLY:
- kibnal_connect_reply(cep, info, arg);
+ case FCM_CONNECT_TIMEOUT:
+ kibnal_connreq_done(conn, IBNAL_CONN_ACTIVE, -ETIMEDOUT);
+ break;
+
+ case FCM_CONNECT_REJECT:
+ kibnal_check_connreject(conn, IBNAL_CONN_ACTIVE,
+ &info->Info.Reject);
break;
- case FCM_DISCONNECT_REQUEST:
- /* XXX lock around these state management bits? */
- if (conn->ibc_state == IBNAL_CONN_ESTABLISHED)
- kibnal_close_conn (conn, 0);
- conn->ibc_state = IBNAL_CONN_DREP;
- iibt_cm_disconnect(conn->ibc_cep, NULL, NULL);
+ case FCM_CONNECT_REPLY:
+ kibnal_check_connreply(conn, &info->Info.Reply);
break;
- /* these both guarantee that no more cm callbacks will occur */
- case FCM_DISCONNECTED: /* aka FCM_DISCONNECT_TIMEOUT */
+ case FCM_DISCONNECT_REQUEST:
case FCM_DISCONNECT_REPLY:
- CDEBUG(D_NET, "Connection %p -> "LPX64" disconnect done.\n",
- conn, conn->ibc_peer->ibp_nid);
-
- conn->ibc_state = IBNAL_CONN_DISCONNECTED;
- kibnal_flush_pending(conn);
- kibnal_put_conn(conn); /* Lose CM's ref */
+ case FCM_DISCONNECTED:
+ kibnal_cm_disconnect_callback(conn, info);
break;
}
-
- return;
-}
-
-static int
-kibnal_set_cm_flags(IB_HANDLE cep)
-{
- FSTATUS frc;
- uint32 value = 1;
-
- frc = iibt_cm_modify_cep(cep, CM_FLAG_TIMEWAIT_CALLBACK,
- (char *)&value, sizeof(value), 0);
- if (frc != FSUCCESS) {
- CERROR("error setting timeout callback: %d\n", frc);
- return -1;
- }
-
-#if 0
- frc = iibt_cm_modify_cep(cep, CM_FLAG_ASYNC_ACCEPT, (char *)&value,
- sizeof(value), 0);
- if (frc != FSUCCESS) {
- CERROR("error setting async accept: %d\n", frc);
- return -1;
- }
-#endif
-
- return 0;
}
void
-kibnal_listen_callback(IB_HANDLE cep, CM_CONN_INFO *info, void *arg)
-{
- IB_CA_ATTRIBUTES *ca_attr = &kibnal_data.kib_hca_attrs;
- IB_QP_ATTRIBUTES_QUERY *query;
- CM_REQUEST_INFO *req;
- CM_CONN_INFO *rep = NULL, *rcv = NULL;
- kib_wire_connreq_t *wcr;
- kib_conn_t *conn = NULL;
- uint16_t reason = 0;
- FSTATUS frc;
- int rc = 0;
-
- LASSERT(cep);
- LASSERT(info);
- LASSERT(arg == NULL); /* no conn yet for passive */
-
- CDEBUG(D_NET, "status 0x%x\n", info->Status);
-
- req = &info->Info.Request;
- wcr = (kib_wire_connreq_t *)req->PrivateData;
-
- CDEBUG(D_NET, "%d from "LPX64"\n", info->Status,
- le64_to_cpu(wcr->wcr_nid));
-
- if (info->Status == FCM_CONNECT_CANCEL)
- return;
-
- LASSERT (info->Status == FCM_CONNECT_REQUEST);
-
- if (wcr->wcr_magic != cpu_to_le32(IBNAL_MSG_MAGIC)) {
- CERROR ("Can't accept: bad magic %08x\n",
- le32_to_cpu(wcr->wcr_magic));
- GOTO(out, reason = RC_USER_REJ);
- }
-
- if (wcr->wcr_version != cpu_to_le16(IBNAL_MSG_VERSION)) {
- CERROR ("Can't accept: bad version %d\n",
- le16_to_cpu(wcr->wcr_magic));
- GOTO(out, reason = RC_USER_REJ);
- }
-
- rc = kibnal_accept(&conn, cep,
- le64_to_cpu(wcr->wcr_nid),
- le64_to_cpu(wcr->wcr_incarnation),
- le16_to_cpu(wcr->wcr_queue_depth));
- if (rc != 0) {
- CERROR ("Can't accept "LPX64": %d\n",
- le64_to_cpu(wcr->wcr_nid), rc);
- GOTO(out, reason = RC_NO_RESOURCES);
- }
-
- frc = kibnal_qp_rts(conn->ibc_qp, req->CEPInfo.QPN,
- min_t(__u8, req->CEPInfo.OfferedInitiatorDepth,
- ca_attr->MaxQPResponderResources),
- &req->PathInfo.Path,
- min_t(__u8, req->CEPInfo.OfferedResponderResources,
- ca_attr->MaxQPInitiatorDepth),
- req->CEPInfo.StartingPSN);
-
- if (frc != FSUCCESS) {
- CERROR ("Can't mark QP RTS/RTR "LPX64": %d\n",
- le64_to_cpu(wcr->wcr_nid), frc);
- GOTO(out, reason = RC_NO_QP);
- }
-
- frc = iibt_qp_query(conn->ibc_qp, &conn->ibc_qp_attrs, NULL);
- if (frc != FSUCCESS) {
- CERROR ("Couldn't query qp attributes "LPX64": %d\n",
- le64_to_cpu(wcr->wcr_nid), frc);
- GOTO(out, reason = RC_NO_QP);
- }
- query = &conn->ibc_qp_attrs;
-
- PORTAL_ALLOC(rep, sizeof(*rep));
- PORTAL_ALLOC(rcv, sizeof(*rcv));
- if (rep == NULL || rcv == NULL) {
- if (rep) PORTAL_FREE(rep, sizeof(*rep));
- if (rcv) PORTAL_FREE(rcv, sizeof(*rcv));
- CERROR ("can't allocate reply and receive buffers\n");
- GOTO(out, reason = RC_INSUFFICIENT_RESP_RES);
- }
-
- /* don't try to deref this into the incoming wcr :) */
- wcr = (kib_wire_connreq_t *)rep->Info.Reply.PrivateData;
-
- rep->Info.Reply = (CM_REPLY_INFO) {
- .QPN = query->QPNumber,
- .QKey = query->Qkey,
- .StartingPSN = query->RecvPSN,
- .EndToEndFlowControl = query->FlowControl,
- /* XXX Hmm. */
- .ArbInitiatorDepth = query->InitiatorDepth,
- .ArbResponderResources = query->ResponderResources,
- .TargetAckDelay = 0,
- .FailoverAccepted = 0,
- .RnRRetryCount = req->CEPInfo.RnrRetryCount,
- };
-
- *wcr = (kib_wire_connreq_t) {
- .wcr_magic = cpu_to_le32(IBNAL_MSG_MAGIC),
- .wcr_version = cpu_to_le16(IBNAL_MSG_VERSION),
- .wcr_queue_depth = cpu_to_le32(IBNAL_MSG_QUEUE_SIZE),
- .wcr_nid = cpu_to_le64(kibnal_data.kib_nid),
- .wcr_incarnation = cpu_to_le64(kibnal_data.kib_incarnation),
- };
-
- frc = iibt_cm_accept(cep, rep, rcv, kibnal_cm_callback, conn,
- &conn->ibc_cep);
-
- PORTAL_FREE(rep, sizeof(*rep));
- PORTAL_FREE(rcv, sizeof(*rcv));
-
- if (frc != FCM_CONNECT_ESTABLISHED) {
- /* XXX it seems we don't call reject after this point? */
- CERROR("iibt_cm_accept() failed: %d, aborting\n", frc);
- rc = -ECONNABORTED;
- goto out;
- }
-
- if (kibnal_set_cm_flags(conn->ibc_cep)) {
- rc = -ECONNABORTED;
- goto out;
- }
-
- CDEBUG(D_WARNING, "Connection %p -> "LPX64" ESTABLISHED.\n",
- conn, conn->ibc_peer->ibp_nid);
-
-out:
- if (reason) {
- kibnal_reject(cep, reason);
- rc = -ECONNABORTED;
- }
- if (conn != NULL)
- kibnal_connreq_done(conn, 0, rc);
-
- return;
-}
-
-static void
dump_path_records(PATH_RESULTS *results)
{
IB_PATH_RECORD *path;
int i;
- for(i = 0; i < results->NumPathRecords; i++) {
+ for (i = 0; i < results->NumPathRecords; i++) {
path = &results->PathRecords[i];
CDEBUG(D_NET, "%d: sgid "LPX64":"LPX64" dgid "
LPX64":"LPX64" pkey %x\n",
}
}
-static void
-kibnal_pathreq_callback (void *arg, QUERY *query,
- QUERY_RESULT_VALUES *query_res)
+void
+kibnal_pathreq_callback (void *arg, QUERY *qry,
+ QUERY_RESULT_VALUES *qrslt)
{
- IB_CA_ATTRIBUTES *ca_attr = &kibnal_data.kib_hca_attrs;
- kib_conn_t *conn = arg;
- PATH_RESULTS *path;
- FSTATUS frc;
+ IB_CA_ATTRIBUTES *ca_attr = &kibnal_data.kib_hca_attrs;
+ kib_conn_t *conn = arg;
+ CM_REQUEST_INFO *req = &conn->ibc_cvars->cv_cmci.Info.Request;
+ PATH_RESULTS *path = (PATH_RESULTS *)qrslt->QueryResult;
+ FSTATUS frc;
- if (query_res->Status != FSUCCESS || query_res->ResultDataSize == 0) {
- CERROR ("status %d data size %d\n", query_res->Status,
- query_res->ResultDataSize);
- kibnal_connreq_done (conn, 1, -EINVAL);
+ if (qrslt->Status != FSUCCESS ||
+ qrslt->ResultDataSize < sizeof(*path)) {
+ CDEBUG (D_NETERROR, "pathreq %s failed: status %d data size %d\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid),
+ qrslt->Status, qrslt->ResultDataSize);
+ kibnal_connreq_done(conn, IBNAL_CONN_ACTIVE, -EHOSTUNREACH);
return;
}
- path = (PATH_RESULTS *)query_res->QueryResult;
-
if (path->NumPathRecords < 1) {
- CERROR ("expected path records: %d\n", path->NumPathRecords);
- kibnal_connreq_done (conn, 1, -EINVAL);
+ CDEBUG (D_NETERROR, "pathreq %s failed: no path records\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid));
+ kibnal_connreq_done(conn, IBNAL_CONN_ACTIVE, -EHOSTUNREACH);
return;
}
- dump_path_records(path);
+ //dump_path_records(path);
+ conn->ibc_cvars->cv_path = path->PathRecords[0];
- /* just using the first. this is probably a horrible idea. */
- conn->ibc_connreq->cr_path = path->PathRecords[0];
+ LASSERT (conn->ibc_cep == NULL);
- conn->ibc_cep = iibt_cm_create_cep(CM_RC_TYPE);
+ conn->ibc_cep = kibnal_create_cep(conn->ibc_peer->ibp_nid);
if (conn->ibc_cep == NULL) {
- CERROR ("Can't create CEP\n");
- kibnal_connreq_done (conn, 1, -EINVAL);
+ kibnal_connreq_done(conn, IBNAL_CONN_ACTIVE, -ENOMEM);
return;
}
- if (kibnal_set_cm_flags(conn->ibc_cep)) {
- kibnal_connreq_done (conn, 1, -EINVAL);
- return;
+ memset(req, 0, sizeof(*req));
+ req->SID = conn->ibc_cvars->cv_svcrec.RID.ServiceID;
+ req->CEPInfo.CaGUID = kibnal_data.kib_hca_guids[kibnal_data.kib_hca_idx];
+ req->CEPInfo.EndToEndFlowControl = IBNAL_EE_FLOW;
+ req->CEPInfo.PortGUID = conn->ibc_cvars->cv_path.SGID.Type.Global.InterfaceID;
+ req->CEPInfo.RetryCount = IBNAL_RETRY;
+ req->CEPInfo.RnrRetryCount = IBNAL_RNR_RETRY;
+ req->CEPInfo.AckTimeout = IBNAL_ACK_TIMEOUT;
+ req->CEPInfo.StartingPSN = IBNAL_STARTING_PSN;
+ req->CEPInfo.QPN = conn->ibc_cvars->cv_qpattrs.QPNumber;
+ req->CEPInfo.QKey = conn->ibc_cvars->cv_qpattrs.Qkey;
+ req->CEPInfo.OfferedResponderResources = ca_attr->MaxQPResponderResources;
+ req->CEPInfo.OfferedInitiatorDepth = ca_attr->MaxQPInitiatorDepth;
+ req->PathInfo.bSubnetLocal = IBNAL_LOCAL_SUB;
+ req->PathInfo.Path = conn->ibc_cvars->cv_path;
+
+ CLASSERT (CM_REQUEST_INFO_USER_LEN >=
+ offsetof(kib_msg_t, ibm_u) + sizeof(kib_connparams_t));
+
+ kibnal_pack_connmsg((kib_msg_t *)req->PrivateData,
+ conn->ibc_version,
+ CM_REQUEST_INFO_USER_LEN,
+ IBNAL_MSG_CONNREQ,
+ conn->ibc_peer->ibp_nid, 0);
+
+ if (the_lnet.ln_testprotocompat != 0) {
+ /* single-shot proto test */
+ LNET_LOCK();
+ if ((the_lnet.ln_testprotocompat & 1) != 0) {
+ ((kib_msg_t *)req->PrivateData)->ibm_version++;
+ the_lnet.ln_testprotocompat &= ~1;
+ }
+ if ((the_lnet.ln_testprotocompat & 2) != 0) {
+ ((kib_msg_t *)req->PrivateData)->ibm_magic =
+ LNET_PROTO_MAGIC;
+ the_lnet.ln_testprotocompat &= ~2;
+ }
+ LNET_UNLOCK();
}
- conn->ibc_connreq->cr_wcr = (kib_wire_connreq_t) {
- .wcr_magic = cpu_to_le32(IBNAL_MSG_MAGIC),
- .wcr_version = cpu_to_le16(IBNAL_MSG_VERSION),
- .wcr_queue_depth = cpu_to_le16(IBNAL_MSG_QUEUE_SIZE),
- .wcr_nid = cpu_to_le64(kibnal_data.kib_nid),
- .wcr_incarnation = cpu_to_le64(kibnal_data.kib_incarnation),
- };
-
- conn->ibc_connreq->cr_cmreq = (CM_REQUEST_INFO) {
- .SID = conn->ibc_connreq->cr_service.RID.ServiceID,
- .CEPInfo = (CM_CEP_INFO) {
- .CaGUID = kibnal_data.kib_hca_guids[0],
- .EndToEndFlowControl = FALSE,
- .PortGUID = conn->ibc_connreq->cr_path.SGID.Type.Global.InterfaceID,
- .RetryCount = IBNAL_RETRY,
- .RnrRetryCount = IBNAL_RNR_RETRY,
- .AckTimeout = IBNAL_ACK_TIMEOUT,
- .StartingPSN = IBNAL_STARTING_PSN,
- .QPN = conn->ibc_qp_attrs.QPNumber,
- .QKey = conn->ibc_qp_attrs.Qkey,
- .OfferedResponderResources = ca_attr->MaxQPResponderResources,
- .OfferedInitiatorDepth = ca_attr->MaxQPInitiatorDepth,
- },
- .PathInfo = (CM_CEP_PATHINFO) {
- .bSubnetLocal = TRUE,
- .Path = conn->ibc_connreq->cr_path,
- },
- };
-
-#if 0
- /* XXX set timeout just like SDP!!!*/
- conn->ibc_connreq->cr_path.packet_life = 13;
-#endif
/* Flag I'm getting involved with the CM... */
- conn->ibc_state = IBNAL_CONN_CONNECTING;
+ kibnal_set_conn_state(conn, IBNAL_CONN_CONNECTING);
- CDEBUG(D_NET, "Connecting to, service id "LPX64", on "LPX64"\n",
- conn->ibc_connreq->cr_service.RID.ServiceID,
- *kibnal_service_nid_field(&conn->ibc_connreq->cr_service));
-
- memset(conn->ibc_connreq->cr_cmreq.PrivateData, 0,
- CM_REQUEST_INFO_USER_LEN);
- memcpy(conn->ibc_connreq->cr_cmreq.PrivateData,
- &conn->ibc_connreq->cr_wcr, sizeof(conn->ibc_connreq->cr_wcr));
-
- /* kibnal_cm_callback gets my conn ref */
- frc = iibt_cm_connect(conn->ibc_cep, &conn->ibc_connreq->cr_cmreq,
- kibnal_cm_callback, conn);
- if (frc != FPENDING && frc != FSUCCESS) {
- CERROR ("Connect: %d\n", frc);
- /* Back out state change as connect failed */
- conn->ibc_state = IBNAL_CONN_INIT_QP;
- kibnal_connreq_done (conn, 1, -EINVAL);
- }
+ /* cm callback gets my conn ref */
+ frc = iba_cm_connect(conn->ibc_cep, req,
+ kibnal_cm_active_callback, conn);
+ if (frc == FPENDING || frc == FSUCCESS)
+ return;
+
+ CERROR ("Connect %s failed: %d\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid), frc);
+ kibnal_connreq_done(conn, IBNAL_CONN_ACTIVE, -EHOSTUNREACH);
}
-static void
-dump_service_records(SERVICE_RECORD_RESULTS *results)
+void
+kibnal_dump_service_records(SERVICE_RECORD_RESULTS *results)
{
IB_SERVICE_RECORD *svc;
int i;
- for(i = 0; i < results->NumServiceRecords; i++) {
+ for (i = 0; i < results->NumServiceRecords; i++) {
svc = &results->ServiceRecords[i];
CDEBUG(D_NET, "%d: sid "LPX64" gid "LPX64":"LPX64" pkey %x\n",
i,
}
}
-
-static void
-kibnal_service_get_callback (void *arg, QUERY *query,
- QUERY_RESULT_VALUES *query_res)
+void
+kibnal_service_get_callback (void *arg, QUERY *qry,
+ QUERY_RESULT_VALUES *qrslt)
{
- kib_conn_t *conn = arg;
- SERVICE_RECORD_RESULTS *svc;
- COMMAND_CONTROL_PARAMETERS sd_params;
- QUERY path_query;
- FSTATUS frc;
-
- if (query_res->Status != FSUCCESS || query_res->ResultDataSize == 0) {
- CERROR ("status %d data size %d\n", query_res->Status,
- query_res->ResultDataSize);
- kibnal_connreq_done (conn, 1, -EINVAL);
+ kib_conn_t *conn = arg;
+ SERVICE_RECORD_RESULTS *svc;
+ FSTATUS frc;
+
+ if (qrslt->Status != FSUCCESS ||
+ qrslt->ResultDataSize < sizeof(*svc)) {
+ CDEBUG (D_NETERROR, "Lookup %s failed: status %d data size %d\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid),
+ qrslt->Status, qrslt->ResultDataSize);
+ kibnal_connreq_done(conn, IBNAL_CONN_ACTIVE, -EHOSTUNREACH);
return;
}
- svc = (SERVICE_RECORD_RESULTS *)query_res->QueryResult;
-
+ svc = (SERVICE_RECORD_RESULTS *)qrslt->QueryResult;
if (svc->NumServiceRecords < 1) {
- CERROR ("%d service records\n", svc->NumServiceRecords);
- kibnal_connreq_done (conn, 1, -EINVAL);
+ CDEBUG (D_NETERROR, "lookup %s failed: no service records\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid));
+ kibnal_connreq_done(conn, IBNAL_CONN_ACTIVE, -EHOSTUNREACH);
return;
}
- dump_service_records(svc);
-
- conn->ibc_connreq->cr_service = svc->ServiceRecords[0];
-
- CDEBUG(D_NET, "Got status %d, service id "LPX64", on "LPX64"\n",
- query_res->Status , conn->ibc_connreq->cr_service.RID.ServiceID,
- *kibnal_service_nid_field(&conn->ibc_connreq->cr_service));
+ //kibnal_dump_service_records(svc);
+ conn->ibc_cvars->cv_svcrec = svc->ServiceRecords[0];
- memset(&path_query, 0, sizeof(path_query));
- path_query.InputType = InputTypePortGuidPair;
- path_query.OutputType = OutputTypePathRecord;
- path_query.InputValue.PortGuidPair.SourcePortGuid = kibnal_data.kib_port_guid;
- path_query.InputValue.PortGuidPair.DestPortGuid = conn->ibc_connreq->cr_service.RID.ServiceGID.Type.Global.InterfaceID;
+ qry = &conn->ibc_cvars->cv_query;
+ memset(qry, 0, sizeof(*qry));
- memset(&sd_params, 0, sizeof(sd_params));
- sd_params.RetryCount = IBNAL_RETRY;
- sd_params.Timeout = 10 * 1000; /* wait 10 seconds */
+ qry->OutputType = OutputTypePathRecord;
+ qry->InputType = InputTypePortGuidPair;
- /* kibnal_service_get_callback gets my conn ref */
+ qry->InputValue.PortGuidPair.SourcePortGuid =
+ kibnal_data.kib_port_guid;
+ qry->InputValue.PortGuidPair.DestPortGuid =
+ conn->ibc_cvars->cv_svcrec.RID.ServiceGID.Type.Global.InterfaceID;
- frc = iibt_sd_query_port_fabric_information(kibnal_data.kib_sd,
- kibnal_data.kib_port_guid,
- &path_query,
- kibnal_pathreq_callback,
- &sd_params, conn);
+ /* kibnal_pathreq_callback gets my conn ref */
+ frc = iba_sd_query_port_fabric_info(kibnal_data.kib_sd,
+ kibnal_data.kib_port_guid,
+ qry,
+ kibnal_pathreq_callback,
+ &kibnal_data.kib_sdretry,
+ conn);
if (frc == FPENDING)
return;
- CERROR ("Path record request failed: %d\n", frc);
- kibnal_connreq_done (conn, 1, -EINVAL);
+ CERROR ("pathreq %s failed: %d\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid), frc);
+ kibnal_connreq_done(conn, IBNAL_CONN_ACTIVE, -EHOSTUNREACH);
}
-static void
+void
kibnal_connect_peer (kib_peer_t *peer)
{
- COMMAND_CONTROL_PARAMETERS sd_params;
- QUERY query;
- FSTATUS frc;
- kib_conn_t *conn = kibnal_create_conn();
+ QUERY *qry;
+ FSTATUS frc;
+ kib_conn_t *conn;
LASSERT (peer->ibp_connecting != 0);
+ conn = kibnal_create_conn(peer->ibp_nid, peer->ibp_version);
if (conn == NULL) {
CERROR ("Can't allocate conn\n");
- kibnal_peer_connect_failed (peer, 1, -ENOMEM);
+ kibnal_peer_connect_failed(peer, IBNAL_CONN_ACTIVE, -ENOMEM);
return;
}
conn->ibc_peer = peer;
- kib_peer_addref(peer);
-
- PORTAL_ALLOC (conn->ibc_connreq, sizeof (*conn->ibc_connreq));
- if (conn->ibc_connreq == NULL) {
- CERROR ("Can't allocate connreq\n");
- kibnal_connreq_done (conn, 1, -ENOMEM);
- return;
- }
-
- memset(conn->ibc_connreq, 0, sizeof (*conn->ibc_connreq));
+ kibnal_peer_addref(peer);
- kibnal_set_service_keys(&conn->ibc_connreq->cr_service, peer->ibp_nid);
+ qry = &conn->ibc_cvars->cv_query;
+ memset(qry, 0, sizeof(*qry));
- memset(&query, 0, sizeof(query));
- query.InputType = InputTypeServiceRecord;
- query.OutputType = OutputTypeServiceRecord;
- query.InputValue.ServiceRecordValue.ServiceRecord = conn->ibc_connreq->cr_service;
- query.InputValue.ServiceRecordValue.ComponentMask = KIBNAL_SERVICE_KEY_MASK;
+ qry->OutputType = OutputTypeServiceRecord;
+ qry->InputType = InputTypeServiceRecord;
- memset(&sd_params, 0, sizeof(sd_params));
- sd_params.RetryCount = IBNAL_RETRY;
- sd_params.Timeout = 10 * 1000; /* wait 10 seconds */
+ qry->InputValue.ServiceRecordValue.ComponentMask =
+ KIBNAL_SERVICE_KEY_MASK;
+ kibnal_set_service_keys(
+ &qry->InputValue.ServiceRecordValue.ServiceRecord,
+ peer->ibp_nid);
/* kibnal_service_get_callback gets my conn ref */
- frc = iibt_sd_query_port_fabric_information(kibnal_data.kib_sd,
- kibnal_data.kib_port_guid,
- &query,
- kibnal_service_get_callback,
- &sd_params, conn);
+ frc = iba_sd_query_port_fabric_info(kibnal_data.kib_sd,
+ kibnal_data.kib_port_guid,
+ qry,
+ kibnal_service_get_callback,
+ &kibnal_data.kib_sdretry,
+ conn);
if (frc == FPENDING)
return;
- CERROR ("iibt_sd_query_port_fabric_information(): %d\n", frc);
- kibnal_connreq_done (conn, 1, frc);
+ CERROR("Lookup %s failed: %d\n", libcfs_nid2str(peer->ibp_nid), frc);
+ kibnal_connreq_done(conn, IBNAL_CONN_ACTIVE, -EHOSTUNREACH);
}
-static int
-kibnal_conn_timed_out (kib_conn_t *conn)
+int
+kibnal_check_txs (kib_conn_t *conn, struct list_head *txs)
{
kib_tx_t *tx;
struct list_head *ttmp;
- unsigned long flags;
+ int timed_out = 0;
- spin_lock_irqsave (&conn->ibc_lock, flags);
+ spin_lock(&conn->ibc_lock);
- list_for_each (ttmp, &conn->ibc_tx_queue) {
+ list_for_each (ttmp, txs) {
tx = list_entry (ttmp, kib_tx_t, tx_list);
- LASSERT (!tx->tx_passive_rdma_wait);
- LASSERT (tx->tx_sending == 0);
-
- if (time_after_eq (jiffies, tx->tx_deadline)) {
- spin_unlock_irqrestore (&conn->ibc_lock, flags);
- return 1;
+ if (txs == &conn->ibc_active_txs) {
+ LASSERT (!tx->tx_queued);
+ LASSERT (tx->tx_waiting || tx->tx_sending != 0);
+ } else {
+ LASSERT (tx->tx_queued);
}
- }
-
- list_for_each (ttmp, &conn->ibc_active_txs) {
- tx = list_entry (ttmp, kib_tx_t, tx_list);
-
- LASSERT (tx->tx_passive_rdma ||
- !tx->tx_passive_rdma_wait);
-
- LASSERT (tx->tx_passive_rdma_wait ||
- tx->tx_sending != 0);
if (time_after_eq (jiffies, tx->tx_deadline)) {
- spin_unlock_irqrestore (&conn->ibc_lock, flags);
- return 1;
+ timed_out = 1;
+ break;
}
}
- spin_unlock_irqrestore (&conn->ibc_lock, flags);
+ spin_unlock(&conn->ibc_lock);
+ return timed_out;
+}
- return 0;
+int
+kibnal_conn_timed_out (kib_conn_t *conn)
+{
+ return kibnal_check_txs(conn, &conn->ibc_tx_queue) ||
+ kibnal_check_txs(conn, &conn->ibc_tx_queue_rsrvd) ||
+ kibnal_check_txs(conn, &conn->ibc_tx_queue_nocred) ||
+ kibnal_check_txs(conn, &conn->ibc_active_txs);
}
-static void
-kibnal_check_conns (int idx)
+void
+kibnal_check_peers (int idx)
{
+ rwlock_t *rwlock = &kibnal_data.kib_global_lock;
struct list_head *peers = &kibnal_data.kib_peers[idx];
struct list_head *ptmp;
kib_peer_t *peer;
kib_conn_t *conn;
struct list_head *ctmp;
+ unsigned long flags;
again:
/* NB. We expect to have a look at all the peers and not find any
* rdmas to time out, so we just use a shared lock while we
* take a look... */
- read_lock (&kibnal_data.kib_global_lock);
+ read_lock_irqsave(rwlock, flags);
list_for_each (ptmp, peers) {
peer = list_entry (ptmp, kib_peer_t, ibp_list);
+ if (peer->ibp_passivewait) {
+ LASSERT (list_empty(&peer->ibp_conns));
+
+ if (!time_after_eq(jiffies,
+ peer->ibp_passivewait_deadline))
+ continue;
+
+ kibnal_peer_addref(peer); /* ++ ref for me... */
+ read_unlock_irqrestore(rwlock, flags);
+
+ kibnal_peer_connect_failed(peer, IBNAL_CONN_WAITING,
+ -ETIMEDOUT);
+ kibnal_peer_decref(peer); /* ...until here */
+
+ /* start again now I've dropped the lock */
+ goto again;
+ }
+
list_for_each (ctmp, &peer->ibp_conns) {
conn = list_entry (ctmp, kib_conn_t, ibc_list);
- KIB_ASSERT_CONN_STATE(conn, IBNAL_CONN_ESTABLISHED);
+ LASSERT (conn->ibc_state == IBNAL_CONN_ESTABLISHED);
/* In case we have enough credits to return via a
* NOOP, but there were no non-blocking tx descs
if (!kibnal_conn_timed_out(conn))
continue;
+
+ /* Handle timeout by closing the whole connection. We
+ * can only be sure RDMA activity has ceased once the
+ * QP has been modified. */
- CDEBUG(D_NET, "++conn[%p] state %d -> "LPX64" (%d)\n",
- conn, conn->ibc_state, peer->ibp_nid,
- atomic_read (&conn->ibc_refcount));
+ kibnal_conn_addref(conn); /* 1 ref for me... */
- atomic_inc (&conn->ibc_refcount);
- read_unlock (&kibnal_data.kib_global_lock);
+ read_unlock_irqrestore(rwlock, flags);
- CERROR("Timed out RDMA with "LPX64"\n",
- peer->ibp_nid);
+ CERROR("Timed out RDMA with %s\n",
+ libcfs_nid2str(peer->ibp_nid));
kibnal_close_conn (conn, -ETIMEDOUT);
- kibnal_put_conn (conn);
+ kibnal_conn_decref(conn); /* ...until here */
/* start again now I've dropped the lock */
goto again;
}
}
- read_unlock (&kibnal_data.kib_global_lock);
+ read_unlock_irqrestore(rwlock, flags);
}
-static void
-kib_connd_handle_state(kib_conn_t *conn)
+void
+kibnal_disconnect_conn (kib_conn_t *conn)
{
- FSTATUS frc;
-
- switch (conn->ibc_state) {
- /* all refs have gone, free and be done with it */
- case IBNAL_CONN_DISCONNECTED:
- kibnal_destroy_conn (conn);
- return; /* avoid put_conn */
+ FSTATUS frc;
- case IBNAL_CONN_SEND_DREQ:
- frc = iibt_cm_disconnect(conn->ibc_cep, NULL, NULL);
- if (frc != FSUCCESS) /* XXX do real things */
- CERROR("disconnect failed: %d\n", frc);
- conn->ibc_state = IBNAL_CONN_DREQ;
- break;
+ LASSERT (conn->ibc_state == IBNAL_CONN_DISCONNECTING);
- /* a callback got to the conn before we did */
- case IBNAL_CONN_DREP:
- break;
-
- default:
- CERROR ("Bad conn %p state: %d\n", conn,
- conn->ibc_state);
- LBUG();
- break;
+ kibnal_conn_disconnected(conn);
+
+ frc = iba_cm_disconnect(conn->ibc_cep, NULL, NULL);
+ switch (frc) {
+ case FSUCCESS:
+ break;
+
+ case FINSUFFICIENT_RESOURCES:
+ CERROR("ENOMEM disconnecting %s\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid));
+ /* This might cause the module to become unloadable since the
+ * FCM_DISCONNECTED callback is still outstanding */
+ break;
+
+ default:
+ CERROR("Unexpected error disconnecting %s: %d\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid), frc);
+ LBUG();
}
- /* drop ref from close_conn */
- kibnal_put_conn(conn);
+ kibnal_peer_notify(conn->ibc_peer);
}
int
kib_peer_t *peer;
int timeout;
int i;
+ int did_something;
int peer_index = 0;
unsigned long deadline = jiffies;
- kportal_daemonize ("kibnal_connd");
- kportal_blockallsigs ();
+ cfs_daemonize ("kibnal_connd");
+ cfs_block_allsigs ();
init_waitqueue_entry (&wait, current);
- spin_lock_irqsave (&kibnal_data.kib_connd_lock, flags);
+ spin_lock_irqsave(&kibnal_data.kib_connd_lock, flags);
+
+ while (!kibnal_data.kib_shutdown) {
+ did_something = 0;
+
+ if (!list_empty (&kibnal_data.kib_connd_zombies)) {
+ conn = list_entry (kibnal_data.kib_connd_zombies.next,
+ kib_conn_t, ibc_list);
+ list_del (&conn->ibc_list);
+ spin_unlock_irqrestore (&kibnal_data.kib_connd_lock, flags);
+ did_something = 1;
+
+ kibnal_destroy_conn(conn);
+
+ spin_lock_irqsave (&kibnal_data.kib_connd_lock, flags);
+ }
- for (;;) {
if (!list_empty (&kibnal_data.kib_connd_conns)) {
conn = list_entry (kibnal_data.kib_connd_conns.next,
kib_conn_t, ibc_list);
list_del (&conn->ibc_list);
-
spin_unlock_irqrestore (&kibnal_data.kib_connd_lock, flags);
- kib_connd_handle_state(conn);
+ did_something = 1;
+ kibnal_disconnect_conn(conn);
+ kibnal_conn_decref(conn);
+
spin_lock_irqsave (&kibnal_data.kib_connd_lock, flags);
- continue;
}
if (!list_empty (&kibnal_data.kib_connd_peers)) {
list_del_init (&peer->ibp_connd_list);
spin_unlock_irqrestore (&kibnal_data.kib_connd_lock, flags);
+ did_something = 1;
kibnal_connect_peer (peer);
- kib_peer_decref (peer);
+ kibnal_peer_decref (peer);
spin_lock_irqsave (&kibnal_data.kib_connd_lock, flags);
}
- /* shut down and nobody left to reap... */
- if (kibnal_data.kib_shutdown &&
- atomic_read(&kibnal_data.kib_nconns) == 0)
- break;
-
- spin_unlock_irqrestore (&kibnal_data.kib_connd_lock, flags);
-
/* careful with the jiffy wrap... */
while ((timeout = (int)(deadline - jiffies)) <= 0) {
const int n = 4;
const int p = 1;
int chunk = kibnal_data.kib_peer_hash_size;
+ spin_unlock_irqrestore (&kibnal_data.kib_connd_lock, flags);
+
/* Time to check for RDMA timeouts on a few more
* peers: I do checks every 'p' seconds on a
* proportion of the peer table and I need to check
* connection within (n+1)/n times the timeout
* interval. */
- if (kibnal_tunables.kib_io_timeout > n * p)
+ if (*kibnal_tunables.kib_timeout > n * p)
chunk = (chunk * n * p) /
- kibnal_tunables.kib_io_timeout;
+ *kibnal_tunables.kib_timeout;
if (chunk == 0)
chunk = 1;
for (i = 0; i < chunk; i++) {
- kibnal_check_conns (peer_index);
+ kibnal_check_peers (peer_index);
peer_index = (peer_index + 1) %
kibnal_data.kib_peer_hash_size;
}
deadline += p * HZ;
+ spin_lock_irqsave (&kibnal_data.kib_connd_lock, flags);
+ did_something = 1;
}
- kibnal_data.kib_connd_waketime = jiffies + timeout;
+ if (did_something)
+ continue;
+
+ spin_unlock_irqrestore (&kibnal_data.kib_connd_lock, flags);
set_current_state (TASK_INTERRUPTIBLE);
add_wait_queue (&kibnal_data.kib_connd_waitq, &wait);
return (0);
}
+
+void
+kibnal_hca_async_callback (void *hca_arg, IB_EVENT_RECORD *ev)
+{
+ /* XXX flesh out. this seems largely for async errors */
+ CERROR("type: %d code: %u\n", ev->EventType, ev->EventCode);
+}
+
+void
+kibnal_hca_callback (void *hca_arg, void *cq_arg)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&kibnal_data.kib_sched_lock, flags);
+ kibnal_data.kib_ready = 1;
+ wake_up(&kibnal_data.kib_sched_waitq);
+ spin_unlock_irqrestore(&kibnal_data.kib_sched_lock, flags);
+}
+
int
kibnal_scheduler(void *arg)
{
- long id = (long)arg;
- char name[16];
- kib_rx_t *rx;
- kib_tx_t *tx;
- unsigned long flags;
- int rc;
- int counter = 0;
- int did_something;
+ long id = (long)arg;
+ wait_queue_t wait;
+ char name[16];
+ FSTATUS frc;
+ FSTATUS frc2;
+ IB_WORK_COMPLETION wc;
+ kib_rx_t *rx;
+ unsigned long flags;
+ __u64 rxseq = 0;
+ int busy_loops = 0;
snprintf(name, sizeof(name), "kibnal_sd_%02ld", id);
- kportal_daemonize(name);
- kportal_blockallsigs();
+ cfs_daemonize(name);
+ cfs_block_allsigs();
- spin_lock_irqsave(&kibnal_data.kib_sched_lock, flags);
+ init_waitqueue_entry(&wait, current);
- for (;;) {
- did_something = 0;
+ spin_lock_irqsave(&kibnal_data.kib_sched_lock, flags);
- while (!list_empty(&kibnal_data.kib_sched_txq)) {
- tx = list_entry(kibnal_data.kib_sched_txq.next,
- kib_tx_t, tx_list);
- list_del(&tx->tx_list);
+ while (!kibnal_data.kib_shutdown) {
+ if (busy_loops++ >= IBNAL_RESCHED) {
spin_unlock_irqrestore(&kibnal_data.kib_sched_lock,
flags);
- kibnal_tx_done(tx);
- spin_lock_irqsave(&kibnal_data.kib_sched_lock,
- flags);
+ our_cond_resched();
+ busy_loops = 0;
+
+ spin_lock_irqsave(&kibnal_data.kib_sched_lock, flags);
}
- if (!list_empty(&kibnal_data.kib_sched_rxq)) {
- rx = list_entry(kibnal_data.kib_sched_rxq.next,
- kib_rx_t, rx_list);
- list_del(&rx->rx_list);
+ if (kibnal_data.kib_ready &&
+ !kibnal_data.kib_checking_cq) {
+ /* take ownership of completion polling */
+ kibnal_data.kib_checking_cq = 1;
+ /* Assume I'll exhaust the CQ */
+ kibnal_data.kib_ready = 0;
spin_unlock_irqrestore(&kibnal_data.kib_sched_lock,
flags);
+
+ frc = iba_poll_cq(kibnal_data.kib_cq, &wc);
+ if (frc == FNOT_DONE) {
+ /* CQ empty */
+ frc2 = iba_rearm_cq(kibnal_data.kib_cq,
+ CQEventSelNextWC);
+ LASSERT (frc2 == FSUCCESS);
+ }
+
+ if (frc == FSUCCESS &&
+ kibnal_wreqid2type(wc.WorkReqId) == IBNAL_WID_RX) {
+ rx = (kib_rx_t *)kibnal_wreqid2ptr(wc.WorkReqId);
+
+ /* Grab the RX sequence number NOW before
+ * anyone else can get an RX completion */
+ rxseq = rx->rx_conn->ibc_rxseq++;
+ }
+
+ spin_lock_irqsave(&kibnal_data.kib_sched_lock, flags);
+ /* give up ownership of completion polling */
+ kibnal_data.kib_checking_cq = 0;
- kibnal_rx(rx);
+ if (frc == FNOT_DONE)
+ continue;
- did_something = 1;
- spin_lock_irqsave(&kibnal_data.kib_sched_lock,
- flags);
- }
+ LASSERT (frc == FSUCCESS);
+ /* Assume there's more: get another scheduler to check
+ * while I handle this completion... */
- /* shut down and no receives to complete... */
- if (kibnal_data.kib_shutdown &&
- atomic_read(&kibnal_data.kib_nconns) == 0)
- break;
+ kibnal_data.kib_ready = 1;
+ wake_up(&kibnal_data.kib_sched_waitq);
- /* nothing to do or hogging CPU */
- if (!did_something || counter++ == IBNAL_RESCHED) {
spin_unlock_irqrestore(&kibnal_data.kib_sched_lock,
flags);
- counter = 0;
-
- if (!did_something) {
- rc = wait_event_interruptible(
- kibnal_data.kib_sched_waitq,
- !list_empty(&kibnal_data.kib_sched_txq) ||
- !list_empty(&kibnal_data.kib_sched_rxq) ||
- (kibnal_data.kib_shutdown &&
- atomic_read (&kibnal_data.kib_nconns) == 0));
- } else {
- our_cond_resched();
- }
- spin_lock_irqsave(&kibnal_data.kib_sched_lock,
- flags);
+ switch (kibnal_wreqid2type(wc.WorkReqId)) {
+ case IBNAL_WID_RX:
+ kibnal_rx_complete(&wc, rxseq);
+ break;
+
+ case IBNAL_WID_TX:
+ kibnal_tx_complete(&wc);
+ break;
+
+ case IBNAL_WID_RDMA:
+ /* We only get RDMA completion notification if
+ * it fails. So we just ignore them completely
+ * because...
+ *
+ * 1) If an RDMA fails, all subsequent work
+ * items, including the final SEND will fail
+ * too, so I'm still guaranteed to notice that
+ * this connection is hosed.
+ *
+ * 2) It's positively dangerous to look inside
+ * the tx descriptor obtained from an RDMA work
+ * item. As soon as I drop the kib_sched_lock,
+ * I give a scheduler on another CPU a chance
+ * to get the final SEND completion, so the tx
+ * descriptor can get freed as I inspect it. */
+ CERROR ("RDMA failed: %d\n", wc.Status);
+ break;
+
+ default:
+ LBUG();
+ }
+
+ spin_lock_irqsave(&kibnal_data.kib_sched_lock, flags);
+ continue;
}
+
+ /* Nothing to do; sleep... */
+
+ set_current_state(TASK_INTERRUPTIBLE);
+ add_wait_queue_exclusive(&kibnal_data.kib_sched_waitq, &wait);
+ spin_unlock_irqrestore(&kibnal_data.kib_sched_lock,
+ flags);
+
+ schedule();
+
+ remove_wait_queue(&kibnal_data.kib_sched_waitq, &wait);
+ set_current_state(TASK_RUNNING);
+ spin_lock_irqsave(&kibnal_data.kib_sched_lock, flags);
}
spin_unlock_irqrestore(&kibnal_data.kib_sched_lock, flags);
kibnal_thread_fini();
return (0);
}
-
-
-lib_nal_t kibnal_lib = {
- libnal_data: &kibnal_data, /* NAL private data */
- libnal_send: kibnal_send,
- libnal_send_pages: kibnal_send_pages,
- libnal_recv: kibnal_recv,
- libnal_recv_pages: kibnal_recv_pages,
- libnal_dist: kibnal_dist
-};
git://git.whamcloud.com / fs / lustre-release.git / blobdiff