Lines Matching refs:qp
15 #include "qp.h"
22 static void rvt_reset_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp,
352 * rvt_driver_qp_init - Init driver qp resources
416 * rvt_free_qp_cb - callback function to reset a qp
417 * @qp: the qp to reset
420 * This function resets the qp and removes it from the
421 * qp hash table.
423 static void rvt_free_qp_cb(struct rvt_qp *qp, u64 v)
426 struct rvt_dev_info *rdi = ib_to_rvt(qp->ibqp.device);
428 /* Reset the qp and remove it from the qp hash list */
429 rvt_reset_qp(rdi, qp, qp->ibqp.qp_type);
458 * Check for qp leaks and free resources.
576 * @qp: rvt qp data structure
579 static void rvt_clear_mr_refs(struct rvt_qp *qp, int clr_sends)
582 struct rvt_dev_info *rdi = ib_to_rvt(qp->ibqp.device);
584 if (test_and_clear_bit(RVT_R_REWIND_SGE, &qp->r_aflags))
585 rvt_put_ss(&qp->s_rdma_read_sge);
587 rvt_put_ss(&qp->r_sge);
590 while (qp->s_last != qp->s_head) {
591 struct rvt_swqe *wqe = rvt_get_swqe_ptr(qp, qp->s_last);
593 rvt_put_qp_swqe(qp, wqe);
594 if (++qp->s_last >= qp->s_size)
595 qp->s_last = 0;
598 if (qp->s_rdma_mr) {
599 rvt_put_mr(qp->s_rdma_mr);
600 qp->s_rdma_mr = NULL;
604 for (n = 0; qp->s_ack_queue && n < rvt_max_atomic(rdi); n++) {
605 struct rvt_ack_entry *e = &qp->s_ack_queue[n];
635 * rvt_qp_sends_has_lkey - return true is qp sends use lkey
636 * @qp: the rvt_qp
639 static bool rvt_qp_sends_has_lkey(struct rvt_qp *qp, u32 lkey)
641 u32 s_last = qp->s_last;
643 while (s_last != qp->s_head) {
644 struct rvt_swqe *wqe = rvt_get_swqe_ptr(qp, s_last);
649 if (++s_last >= qp->s_size)
652 if (qp->s_rdma_mr)
653 if (rvt_mr_has_lkey(qp->s_rdma_mr, lkey))
660 * @qp: the qp
663 static bool rvt_qp_acks_has_lkey(struct rvt_qp *qp, u32 lkey)
666 struct rvt_dev_info *rdi = ib_to_rvt(qp->ibqp.device);
668 for (i = 0; qp->s_ack_queue && i < rvt_max_atomic(rdi); i++) {
669 struct rvt_ack_entry *e = &qp->s_ack_queue[i];
679 * @qp: the qp
683 * the qp.
685 * If so, the qp is put into an error state to elminate
686 * any references from the qp.
688 void rvt_qp_mr_clean(struct rvt_qp *qp, u32 lkey)
692 if (qp->ibqp.qp_type == IB_QPT_SMI ||
693 qp->ibqp.qp_type == IB_QPT_GSI)
696 spin_lock_irq(&qp->r_lock);
697 spin_lock(&qp->s_hlock);
698 spin_lock(&qp->s_lock);
700 if (qp->state == IB_QPS_ERR || qp->state == IB_QPS_RESET)
703 if (rvt_ss_has_lkey(&qp->r_sge, lkey) ||
704 rvt_qp_sends_has_lkey(qp, lkey) ||
705 rvt_qp_acks_has_lkey(qp, lkey))
706 lastwqe = rvt_error_qp(qp, IB_WC_LOC_PROT_ERR);
708 spin_unlock(&qp->s_lock);
709 spin_unlock(&qp->s_hlock);
710 spin_unlock_irq(&qp->r_lock);
714 ev.device = qp->ibqp.device;
715 ev.element.qp = &qp->ibqp;
717 qp->ibqp.event_handler(&ev, qp->ibqp.qp_context);
722 * rvt_remove_qp - remove qp form table
724 * @qp: qp to remove
729 static void rvt_remove_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp)
731 struct rvt_ibport *rvp = rdi->ports[qp->port_num - 1];
732 u32 n = hash_32(qp->ibqp.qp_num, rdi->qp_dev->qp_table_bits);
738 if (rcu_dereference_protected(rvp->qp[0],
739 lockdep_is_held(&rdi->qp_dev->qpt_lock)) == qp) {
740 RCU_INIT_POINTER(rvp->qp[0], NULL);
741 } else if (rcu_dereference_protected(rvp->qp[1],
742 lockdep_is_held(&rdi->qp_dev->qpt_lock)) == qp) {
743 RCU_INIT_POINTER(rvp->qp[1], NULL);
753 if (q == qp) {
755 rcu_dereference_protected(qp->next,
758 trace_rvt_qpremove(qp, n);
767 rvt_put_qp(qp);
815 * @qp: the QP to init or reinit
823 static void rvt_init_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp,
826 qp->remote_qpn = 0;
827 qp->qkey = 0;
828 qp->qp_access_flags = 0;
829 qp->s_flags &= RVT_S_SIGNAL_REQ_WR;
830 qp->s_hdrwords = 0;
831 qp->s_wqe = NULL;
832 qp->s_draining = 0;
833 qp->s_next_psn = 0;
834 qp->s_last_psn = 0;
835 qp->s_sending_psn = 0;
836 qp->s_sending_hpsn = 0;
837 qp->s_psn = 0;
838 qp->r_psn = 0;
839 qp->r_msn = 0;
841 qp->s_state = IB_OPCODE_RC_SEND_LAST;
842 qp->r_state = IB_OPCODE_RC_SEND_LAST;
844 qp->s_state = IB_OPCODE_UC_SEND_LAST;
845 qp->r_state = IB_OPCODE_UC_SEND_LAST;
847 qp->s_ack_state = IB_OPCODE_RC_ACKNOWLEDGE;
848 qp->r_nak_state = 0;
849 qp->r_aflags = 0;
850 qp->r_flags = 0;
851 qp->s_head = 0;
852 qp->s_tail = 0;
853 qp->s_cur = 0;
854 qp->s_acked = 0;
855 qp->s_last = 0;
856 qp->s_ssn = 1;
857 qp->s_lsn = 0;
858 qp->s_mig_state = IB_MIG_MIGRATED;
859 qp->r_head_ack_queue = 0;
860 qp->s_tail_ack_queue = 0;
861 qp->s_acked_ack_queue = 0;
862 qp->s_num_rd_atomic = 0;
863 qp->r_sge.num_sge = 0;
864 atomic_set(&qp->s_reserved_used, 0);
870 * @qp: the QP to reset
875 static void _rvt_reset_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp,
877 __must_hold(&qp->s_lock)
878 __must_hold(&qp->s_hlock)
879 __must_hold(&qp->r_lock)
881 lockdep_assert_held(&qp->r_lock);
882 lockdep_assert_held(&qp->s_hlock);
883 lockdep_assert_held(&qp->s_lock);
884 if (qp->state != IB_QPS_RESET) {
885 qp->state = IB_QPS_RESET;
888 rdi->driver_f.flush_qp_waiters(qp);
889 rvt_stop_rc_timers(qp);
890 qp->s_flags &= ~(RVT_S_TIMER | RVT_S_ANY_WAIT);
891 spin_unlock(&qp->s_lock);
892 spin_unlock(&qp->s_hlock);
893 spin_unlock_irq(&qp->r_lock);
896 rdi->driver_f.stop_send_queue(qp);
897 rvt_del_timers_sync(qp);
899 rdi->driver_f.quiesce_qp(qp);
901 /* take qp out the hash and wait for it to be unused */
902 rvt_remove_qp(rdi, qp);
905 spin_lock_irq(&qp->r_lock);
906 spin_lock(&qp->s_hlock);
907 spin_lock(&qp->s_lock);
909 rvt_clear_mr_refs(qp, 1);
912 * a qp that has been reset
914 rdi->driver_f.notify_qp_reset(qp);
916 rvt_init_qp(rdi, qp, type);
917 lockdep_assert_held(&qp->r_lock);
918 lockdep_assert_held(&qp->s_hlock);
919 lockdep_assert_held(&qp->s_lock);
925 * @qp: the QP to reset
931 static void rvt_reset_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp,
934 spin_lock_irq(&qp->r_lock);
935 spin_lock(&qp->s_hlock);
936 spin_lock(&qp->s_lock);
937 _rvt_reset_qp(rdi, qp, type);
938 spin_unlock(&qp->s_lock);
939 spin_unlock(&qp->s_hlock);
940 spin_unlock_irq(&qp->r_lock);
972 * @qp: Valid QP with allowed_ops set
977 static void free_ud_wq_attr(struct rvt_qp *qp)
982 for (i = 0; qp->allowed_ops == IB_OPCODE_UD && i < qp->s_size; i++) {
983 wqe = rvt_get_swqe_ptr(qp, i);
991 * @qp: Valid QP with allowed_ops set
997 static int alloc_ud_wq_attr(struct rvt_qp *qp, int node)
1002 for (i = 0; qp->allowed_ops == IB_OPCODE_UD && i < qp->s_size; i++) {
1003 wqe = rvt_get_swqe_ptr(qp, i);
1007 free_ud_wq_attr(qp);
1032 struct rvt_qp *qp = ibqp_to_rvtqp(ibqp);
1087 sg_list_sz = sizeof(*qp->r_sg_list) *
1090 sg_list_sz = sizeof(*qp->r_sg_list) *
1092 qp->r_sg_list =
1094 if (!qp->r_sg_list)
1096 qp->allowed_ops = get_allowed_ops(init_attr->qp_type);
1098 RCU_INIT_POINTER(qp->next, NULL);
1100 qp->s_ack_queue =
1102 sizeof(*qp->s_ack_queue),
1105 if (!qp->s_ack_queue)
1108 /* initialize timers needed for rc qp */
1109 timer_setup(&qp->s_timer, rvt_rc_timeout, 0);
1110 hrtimer_init(&qp->s_rnr_timer, CLOCK_MONOTONIC,
1112 qp->s_rnr_timer.function = rvt_rc_rnr_retry;
1118 priv = rdi->driver_f.qp_priv_alloc(rdi, qp);
1123 qp->priv = priv;
1124 qp->timeout_jiffies =
1125 usecs_to_jiffies((4096UL * (1UL << qp->timeout)) /
1130 qp->r_rq.size = init_attr->cap.max_recv_wr + 1;
1131 qp->r_rq.max_sge = init_attr->cap.max_recv_sge;
1132 sz = (sizeof(struct ib_sge) * qp->r_rq.max_sge) +
1134 ret = rvt_alloc_rq(&qp->r_rq, qp->r_rq.size * sz,
1141 * ib_create_qp() will initialize qp->ibqp
1142 * except for qp->ibqp.qp_num.
1144 spin_lock_init(&qp->r_lock);
1145 spin_lock_init(&qp->s_hlock);
1146 spin_lock_init(&qp->s_lock);
1147 atomic_set(&qp->refcount, 0);
1148 atomic_set(&qp->local_ops_pending, 0);
1149 init_waitqueue_head(&qp->wait);
1150 INIT_LIST_HEAD(&qp->rspwait);
1151 qp->state = IB_QPS_RESET;
1152 qp->s_wq = swq;
1153 qp->s_size = sqsize;
1154 qp->s_avail = init_attr->cap.max_send_wr;
1155 qp->s_max_sge = init_attr->cap.max_send_sge;
1157 qp->s_flags = RVT_S_SIGNAL_REQ_WR;
1158 ret = alloc_ud_wq_attr(qp, rdi->dparms.node);
1172 qp->ibqp.qp_num = ret;
1174 qp->ibqp.qp_num |= RVT_AIP_QP_BASE;
1175 qp->port_num = init_attr->port_num;
1176 rvt_init_qp(rdi, qp, init_attr->qp_type);
1178 ret = rdi->driver_f.qp_priv_init(rdi, qp, init_attr);
1196 if (!qp->r_rq.wq) {
1204 u32 s = sizeof(struct rvt_rwq) + qp->r_rq.size * sz;
1206 qp->ip = rvt_create_mmap_info(rdi, s, udata,
1207 qp->r_rq.wq);
1208 if (IS_ERR(qp->ip)) {
1209 ret = PTR_ERR(qp->ip);
1213 ret = ib_copy_to_udata(udata, &qp->ip->offset,
1214 sizeof(qp->ip->offset));
1218 qp->pid = current->pid;
1234 * qps. busy_jiffies is incremented every rc qp scaling interval.
1244 if (qp->ip) {
1246 list_add(&qp->ip->pending_mmaps, &rdi->pending_mmaps);
1253 if (qp->ip)
1254 kref_put(&qp->ip->ref, rvt_release_mmap_info);
1257 rvt_free_qpn(&rdi->qp_dev->qpn_table, qp->ibqp.qp_num);
1260 free_ud_wq_attr(qp);
1263 rvt_free_rq(&qp->r_rq);
1266 rdi->driver_f.qp_priv_free(rdi, qp);
1269 kfree(qp->s_ack_queue);
1270 kfree(qp->r_sg_list);
1277 * @qp: the QP to put into the error state
1286 int rvt_error_qp(struct rvt_qp *qp, enum ib_wc_status err)
1290 struct rvt_dev_info *rdi = ib_to_rvt(qp->ibqp.device);
1292 lockdep_assert_held(&qp->r_lock);
1293 lockdep_assert_held(&qp->s_lock);
1294 if (qp->state == IB_QPS_ERR || qp->state == IB_QPS_RESET)
1297 qp->state = IB_QPS_ERR;
1299 if (qp->s_flags & (RVT_S_TIMER | RVT_S_WAIT_RNR)) {
1300 qp->s_flags &= ~(RVT_S_TIMER | RVT_S_WAIT_RNR);
1301 del_timer(&qp->s_timer);
1304 if (qp->s_flags & RVT_S_ANY_WAIT_SEND)
1305 qp->s_flags &= ~RVT_S_ANY_WAIT_SEND;
1307 rdi->driver_f.notify_error_qp(qp);
1310 if (READ_ONCE(qp->s_last) != qp->s_head)
1311 rdi->driver_f.schedule_send(qp);
1313 rvt_clear_mr_refs(qp, 0);
1316 wc.qp = &qp->ibqp;
1319 if (test_and_clear_bit(RVT_R_WRID_VALID, &qp->r_aflags)) {
1320 wc.wr_id = qp->r_wr_id;
1322 rvt_cq_enter(ibcq_to_rvtcq(qp->ibqp.recv_cq), &wc, 1);
1326 if (qp->r_rq.kwq) {
1332 spin_lock(&qp->r_rq.kwq->c_lock);
1333 /* qp->ip used to validate if there is a user buffer mmaped */
1334 if (qp->ip) {
1335 wq = qp->r_rq.wq;
1339 kwq = qp->r_rq.kwq;
1344 if (head >= qp->r_rq.size)
1346 if (tail >= qp->r_rq.size)
1349 wc.wr_id = rvt_get_rwqe_ptr(&qp->r_rq, tail)->wr_id;
1350 if (++tail >= qp->r_rq.size)
1352 rvt_cq_enter(ibcq_to_rvtcq(qp->ibqp.recv_cq), &wc, 1);
1354 if (qp->ip)
1358 spin_unlock(&qp->r_rq.kwq->c_lock);
1359 } else if (qp->ibqp.event_handler) {
1372 static void rvt_insert_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp)
1374 struct rvt_ibport *rvp = rdi->ports[qp->port_num - 1];
1377 rvt_get_qp(qp);
1380 if (qp->ibqp.qp_num <= 1) {
1381 rcu_assign_pointer(rvp->qp[qp->ibqp.qp_num], qp);
1383 u32 n = hash_32(qp->ibqp.qp_num, rdi->qp_dev->qp_table_bits);
1385 qp->next = rdi->qp_dev->qp_table[n];
1386 rcu_assign_pointer(rdi->qp_dev->qp_table[n], qp);
1387 trace_rvt_qpinsert(qp, n);
1406 struct rvt_qp *qp = ibqp_to_rvtqp(ibqp);
1417 spin_lock_irq(&qp->r_lock);
1418 spin_lock(&qp->s_hlock);
1419 spin_lock(&qp->s_lock);
1422 attr->cur_qp_state : qp->state;
1424 opa_ah = rdma_cap_opa_ah(ibqp->device, qp->port_num);
1431 rdi->driver_f.check_modify_qp(qp, attr, attr_mask, udata))
1445 if (rvt_check_ah(qp->ibqp.device, &attr->ah_attr))
1460 if (rvt_check_ah(qp->ibqp.device, &attr->alt_ah_attr))
1475 if (qp->ibqp.qp_type == IB_QPT_SMI ||
1476 qp->ibqp.qp_type == IB_QPT_GSI ||
1496 * that to a small mtu. We'll set qp->path_mtu
1502 pmtu = rdi->driver_f.get_pmtu_from_attr(rdi, qp, attr);
1509 if (qp->s_mig_state == IB_MIG_ARMED)
1514 if (qp->s_mig_state == IB_MIG_REARM)
1518 if (qp->s_mig_state == IB_MIG_ARMED)
1531 if (qp->state != IB_QPS_RESET)
1532 _rvt_reset_qp(rdi, qp, ibqp->qp_type);
1537 qp->r_flags &= ~RVT_R_COMM_EST;
1538 qp->state = new_state;
1542 qp->s_draining = qp->s_last != qp->s_cur;
1543 qp->state = new_state;
1547 if (qp->ibqp.qp_type == IB_QPT_RC)
1549 qp->state = new_state;
1553 lastwqe = rvt_error_qp(qp, IB_WC_WR_FLUSH_ERR);
1557 qp->state = new_state;
1562 qp->s_pkey_index = attr->pkey_index;
1565 qp->port_num = attr->port_num;
1568 qp->remote_qpn = attr->dest_qp_num;
1571 qp->s_next_psn = attr->sq_psn & rdi->dparms.psn_modify_mask;
1572 qp->s_psn = qp->s_next_psn;
1573 qp->s_sending_psn = qp->s_next_psn;
1574 qp->s_last_psn = qp->s_next_psn - 1;
1575 qp->s_sending_hpsn = qp->s_last_psn;
1579 qp->r_psn = attr->rq_psn & rdi->dparms.psn_modify_mask;
1582 qp->qp_access_flags = attr->qp_access_flags;
1585 rdma_replace_ah_attr(&qp->remote_ah_attr, &attr->ah_attr);
1586 qp->s_srate = rdma_ah_get_static_rate(&attr->ah_attr);
1587 qp->srate_mbps = ib_rate_to_mbps(qp->s_srate);
1591 rdma_replace_ah_attr(&qp->alt_ah_attr, &attr->alt_ah_attr);
1592 qp->s_alt_pkey_index = attr->alt_pkey_index;
1596 qp->s_mig_state = attr->path_mig_state;
1598 qp->remote_ah_attr = qp->alt_ah_attr;
1599 qp->port_num = rdma_ah_get_port_num(&qp->alt_ah_attr);
1600 qp->s_pkey_index = qp->s_alt_pkey_index;
1605 qp->pmtu = rdi->driver_f.mtu_from_qp(rdi, qp, pmtu);
1606 qp->log_pmtu = ilog2(qp->pmtu);
1610 qp->s_retry_cnt = attr->retry_cnt;
1611 qp->s_retry = attr->retry_cnt;
1615 qp->s_rnr_retry_cnt = attr->rnr_retry;
1616 qp->s_rnr_retry = attr->rnr_retry;
1620 qp->r_min_rnr_timer = attr->min_rnr_timer;
1623 qp->timeout = attr->timeout;
1624 qp->timeout_jiffies = rvt_timeout_to_jiffies(qp->timeout);
1628 qp->qkey = attr->qkey;
1631 qp->r_max_rd_atomic = attr->max_dest_rd_atomic;
1634 qp->s_max_rd_atomic = attr->max_rd_atomic;
1637 rdi->driver_f.modify_qp(qp, attr, attr_mask, udata);
1639 spin_unlock(&qp->s_lock);
1640 spin_unlock(&qp->s_hlock);
1641 spin_unlock_irq(&qp->r_lock);
1644 rvt_insert_qp(rdi, qp);
1647 ev.device = qp->ibqp.device;
1648 ev.element.qp = &qp->ibqp;
1650 qp->ibqp.event_handler(&ev, qp->ibqp.qp_context);
1653 ev.device = qp->ibqp.device;
1654 ev.element.qp = &qp->ibqp;
1656 qp->ibqp.event_handler(&ev, qp->ibqp.qp_context);
1661 spin_unlock(&qp->s_lock);
1662 spin_unlock(&qp->s_hlock);
1663 spin_unlock_irq(&qp->r_lock);
1679 struct rvt_qp *qp = ibqp_to_rvtqp(ibqp);
1682 rvt_reset_qp(rdi, qp, ibqp->qp_type);
1684 wait_event(qp->wait, !atomic_read(&qp->refcount));
1686 rvt_free_qpn(&rdi->qp_dev->qpn_table, qp->ibqp.qp_num);
1690 if (qp->ibqp.qp_type == IB_QPT_RC) {
1696 if (qp->ip)
1697 kref_put(&qp->ip->ref, rvt_release_mmap_info);
1698 kvfree(qp->r_rq.kwq);
1699 rdi->driver_f.qp_priv_free(rdi, qp);
1700 kfree(qp->s_ack_queue);
1701 kfree(qp->r_sg_list);
1702 rdma_destroy_ah_attr(&qp->remote_ah_attr);
1703 rdma_destroy_ah_attr(&qp->alt_ah_attr);
1704 free_ud_wq_attr(qp);
1705 vfree(qp->s_wq);
1711 * @ibqp: IB qp to query
1721 struct rvt_qp *qp = ibqp_to_rvtqp(ibqp);
1724 attr->qp_state = qp->state;
1726 attr->path_mtu = rdi->driver_f.mtu_to_path_mtu(qp->pmtu);
1727 attr->path_mig_state = qp->s_mig_state;
1728 attr->qkey = qp->qkey;
1729 attr->rq_psn = qp->r_psn & rdi->dparms.psn_mask;
1730 attr->sq_psn = qp->s_next_psn & rdi->dparms.psn_mask;
1731 attr->dest_qp_num = qp->remote_qpn;
1732 attr->qp_access_flags = qp->qp_access_flags;
1733 attr->cap.max_send_wr = qp->s_size - 1 -
1735 attr->cap.max_recv_wr = qp->ibqp.srq ? 0 : qp->r_rq.size - 1;
1736 attr->cap.max_send_sge = qp->s_max_sge;
1737 attr->cap.max_recv_sge = qp->r_rq.max_sge;
1739 attr->ah_attr = qp->remote_ah_attr;
1740 attr->alt_ah_attr = qp->alt_ah_attr;
1741 attr->pkey_index = qp->s_pkey_index;
1742 attr->alt_pkey_index = qp->s_alt_pkey_index;
1744 attr->sq_draining = qp->s_draining;
1745 attr->max_rd_atomic = qp->s_max_rd_atomic;
1746 attr->max_dest_rd_atomic = qp->r_max_rd_atomic;
1747 attr->min_rnr_timer = qp->r_min_rnr_timer;
1748 attr->port_num = qp->port_num;
1749 attr->timeout = qp->timeout;
1750 attr->retry_cnt = qp->s_retry_cnt;
1751 attr->rnr_retry = qp->s_rnr_retry_cnt;
1753 rdma_ah_get_port_num(&qp->alt_ah_attr);
1754 attr->alt_timeout = qp->alt_timeout;
1756 init_attr->event_handler = qp->ibqp.event_handler;
1757 init_attr->qp_context = qp->ibqp.qp_context;
1758 init_attr->send_cq = qp->ibqp.send_cq;
1759 init_attr->recv_cq = qp->ibqp.recv_cq;
1760 init_attr->srq = qp->ibqp.srq;
1762 if (qp->s_flags & RVT_S_SIGNAL_REQ_WR)
1766 init_attr->qp_type = qp->ibqp.qp_type;
1767 init_attr->port_num = qp->port_num;
1784 struct rvt_qp *qp = ibqp_to_rvtqp(ibqp);
1785 struct rvt_krwq *wq = qp->r_rq.kwq;
1787 int qp_err_flush = (ib_rvt_state_ops[qp->state] & RVT_FLUSH_RECV) &&
1788 !qp->ibqp.srq;
1791 if (!(ib_rvt_state_ops[qp->state] & RVT_POST_RECV_OK) || !wq) {
1801 if ((unsigned)wr->num_sge > qp->r_rq.max_sge) {
1806 spin_lock_irqsave(&qp->r_rq.kwq->p_lock, flags);
1808 if (next >= qp->r_rq.size)
1811 spin_unlock_irqrestore(&qp->r_rq.kwq->p_lock, flags);
1819 wc.qp = &qp->ibqp;
1823 rvt_cq_enter(ibcq_to_rvtcq(qp->ibqp.recv_cq), &wc, 1);
1825 wqe = rvt_get_rwqe_ptr(&qp->r_rq, wq->head);
1839 spin_unlock_irqrestore(&qp->r_rq.kwq->p_lock, flags);
1846 * @qp: the qp
1863 struct rvt_qp *qp,
1871 if (!(post_parms[wr->opcode].qpt_support & BIT(qp->ibqp.qp_type)))
1874 ibpd_to_rvtpd(qp->ibqp.pd)->user)
1882 !qp->s_max_rd_atomic)
1886 if (qp->ibqp.qp_type != IB_QPT_UC &&
1887 qp->ibqp.qp_type != IB_QPT_RC) {
1888 if (qp->ibqp.pd != ud_wr(wr)->ah->pd)
1897 * @qp: the qp
1902 * qp variable is uncontrolled.
1904 * For non reserved operations, the qp->s_avail
1910 struct rvt_qp *qp,
1922 reserved_used = atomic_read(&qp->s_reserved_used);
1928 if (likely(qp->s_avail))
1931 slast = smp_load_acquire(&qp->s_last);
1932 if (qp->s_head >= slast)
1933 avail = qp->s_size - (qp->s_head - slast);
1935 avail = slast - qp->s_head;
1937 reserved_used = atomic_read(&qp->s_reserved_used);
1943 qp->s_avail = avail;
1944 if (WARN_ON(qp->s_avail >
1945 (qp->s_size - 1 - rdi->dparms.reserved_operations)))
1948 qp->ibqp.qp_num, qp->s_size, qp->s_avail,
1949 qp->s_head, qp->s_tail, qp->s_cur,
1950 qp->s_acked, qp->s_last);
1956 * @qp: the QP to post on
1960 static int rvt_post_one_wr(struct rvt_qp *qp,
1971 struct rvt_dev_info *rdi = ib_to_rvt(qp->ibqp.device);
1981 if (unlikely(wr->num_sge > qp->s_max_sge))
1984 ret = rvt_qp_valid_operation(qp, rdi->post_parms, wr);
2003 ret = rvt_fast_reg_mr(qp,
2012 atomic_read(&qp->local_ops_pending)) {
2016 qp, wr->ex.invalidate_rkey);
2029 ret = rvt_qp_is_avail(qp, rdi, reserved_op);
2032 next = qp->s_head + 1;
2033 if (next >= qp->s_size)
2037 pd = ibpd_to_rvtpd(qp->ibqp.pd);
2038 wqe = rvt_get_swqe_ptr(qp, qp->s_head);
2072 log_pmtu = qp->log_pmtu;
2073 if (qp->allowed_ops == IB_OPCODE_UD) {
2082 atomic_inc(&qp->local_ops_pending);
2089 wqe->ssn = qp->s_ssn++;
2090 wqe->psn = qp->s_next_psn;
2099 ret = rdi->driver_f.setup_wqe(qp, wqe, call_send);
2105 qp->s_next_psn = wqe->lpsn + 1;
2109 rvt_qp_wqe_reserve(qp, wqe);
2112 qp->s_avail--;
2114 trace_rvt_post_one_wr(qp, wqe, wr->num_sge);
2116 qp->s_head = next;
2121 if (qp->allowed_ops == IB_OPCODE_UD)
2146 struct rvt_qp *qp = ibqp_to_rvtqp(ibqp);
2153 spin_lock_irqsave(&qp->s_hlock, flags);
2159 if (unlikely(!(ib_rvt_state_ops[qp->state] & RVT_POST_SEND_OK))) {
2160 spin_unlock_irqrestore(&qp->s_hlock, flags);
2169 call_send = qp->s_head == READ_ONCE(qp->s_last) && !wr->next;
2172 err = rvt_post_one_wr(qp, wr, &call_send);
2180 spin_unlock_irqrestore(&qp->s_hlock, flags);
2187 rdi->driver_f.do_send(qp);
2189 rdi->driver_f.schedule_send_no_lock(qp);
2267 static int init_sge(struct rvt_qp *qp, struct rvt_rwqe *wqe)
2274 struct rvt_dev_info *rdi = ib_to_rvt(qp->ibqp.device);
2277 pd = ibpd_to_rvtpd(qp->ibqp.srq ? qp->ibqp.srq->pd : qp->ibqp.pd);
2278 ss = &qp->r_sge;
2279 ss->sg_list = qp->r_sg_list;
2280 qp->r_len = 0;
2290 qp->r_len += wqe->sg_list[i].length;
2294 ss->total_len = qp->r_len;
2308 wc.qp = &qp->ibqp;
2310 rvt_cq_enter(ibcq_to_rvtcq(qp->ibqp.recv_cq), &wc, 1);
2335 * @qp: the QP
2336 * @wr_id_only: update qp->r_wr_id only, not qp->r_sge
2343 int rvt_get_rwqe(struct rvt_qp *qp, bool wr_id_only)
2357 if (qp->ibqp.srq) {
2358 srq = ibsrq_to_rvtsrq(qp->ibqp.srq);
2365 rq = &qp->r_rq;
2366 ip = qp->ip;
2370 if (!(ib_rvt_state_ops[qp->state] & RVT_PROCESS_RECV_OK)) {
2408 if (!wr_id_only && !init_sge(qp, wqe)) {
2412 qp->r_wr_id = wqe->wr_id;
2416 set_bit(RVT_R_WRID_VALID, &qp->r_aflags);
2431 ev.device = qp->ibqp.device;
2432 ev.element.srq = qp->ibqp.srq;
2448 * @qp: the QP
2450 void rvt_comm_est(struct rvt_qp *qp)
2452 qp->r_flags |= RVT_R_COMM_EST;
2453 if (qp->ibqp.event_handler) {
2456 ev.device = qp->ibqp.device;
2457 ev.element.qp = &qp->ibqp;
2459 qp->ibqp.event_handler(&ev, qp->ibqp.qp_context);
2464 void rvt_rc_error(struct rvt_qp *qp, enum ib_wc_status err)
2469 spin_lock_irqsave(&qp->s_lock, flags);
2470 lastwqe = rvt_error_qp(qp, err);
2471 spin_unlock_irqrestore(&qp->s_lock, flags);
2476 ev.device = qp->ibqp.device;
2477 ev.element.qp = &qp->ibqp;
2479 qp->ibqp.event_handler(&ev, qp->ibqp.qp_context);
2503 * @qp - the QP
2507 void rvt_add_retry_timer_ext(struct rvt_qp *qp, u8 shift)
2509 struct ib_qp *ibqp = &qp->ibqp;
2512 lockdep_assert_held(&qp->s_lock);
2513 qp->s_flags |= RVT_S_TIMER;
2514 /* 4.096 usec. * (1 << qp->timeout) */
2515 qp->s_timer.expires = jiffies + rdi->busy_jiffies +
2516 (qp->timeout_jiffies << shift);
2517 add_timer(&qp->s_timer);
2523 * @qp: the QP
2526 void rvt_add_rnr_timer(struct rvt_qp *qp, u32 aeth)
2530 lockdep_assert_held(&qp->s_lock);
2531 qp->s_flags |= RVT_S_WAIT_RNR;
2533 trace_rvt_rnrnak_add(qp, to);
2534 hrtimer_start(&qp->s_rnr_timer,
2541 * @qp: the QP
2544 void rvt_stop_rc_timers(struct rvt_qp *qp)
2546 lockdep_assert_held(&qp->s_lock);
2548 if (qp->s_flags & (RVT_S_TIMER | RVT_S_WAIT_RNR)) {
2549 qp->s_flags &= ~(RVT_S_TIMER | RVT_S_WAIT_RNR);
2550 del_timer(&qp->s_timer);
2551 hrtimer_try_to_cancel(&qp->s_rnr_timer);
2558 * @qp: the QP
2563 static void rvt_stop_rnr_timer(struct rvt_qp *qp)
2565 lockdep_assert_held(&qp->s_lock);
2567 if (qp->s_flags & RVT_S_WAIT_RNR) {
2568 qp->s_flags &= ~RVT_S_WAIT_RNR;
2569 trace_rvt_rnrnak_stop(qp, 0);
2575 * @qp: the QP
2577 void rvt_del_timers_sync(struct rvt_qp *qp)
2579 del_timer_sync(&qp->s_timer);
2580 hrtimer_cancel(&qp->s_rnr_timer);
2589 struct rvt_qp *qp = from_timer(qp, t, s_timer);
2590 struct rvt_dev_info *rdi = ib_to_rvt(qp->ibqp.device);
2593 spin_lock_irqsave(&qp->r_lock, flags);
2594 spin_lock(&qp->s_lock);
2595 if (qp->s_flags & RVT_S_TIMER) {
2596 struct rvt_ibport *rvp = rdi->ports[qp->port_num - 1];
2598 qp->s_flags &= ~RVT_S_TIMER;
2600 del_timer(&qp->s_timer);
2601 trace_rvt_rc_timeout(qp, qp->s_last_psn + 1);
2603 rdi->driver_f.notify_restart_rc(qp,
2604 qp->s_last_psn + 1,
2606 rdi->driver_f.schedule_send(qp);
2608 spin_unlock(&qp->s_lock);
2609 spin_unlock_irqrestore(&qp->r_lock, flags);
2617 struct rvt_qp *qp = container_of(t, struct rvt_qp, s_rnr_timer);
2618 struct rvt_dev_info *rdi = ib_to_rvt(qp->ibqp.device);
2621 spin_lock_irqsave(&qp->s_lock, flags);
2622 rvt_stop_rnr_timer(qp);
2623 trace_rvt_rnrnak_timeout(qp, 0);
2624 rdi->driver_f.schedule_send(qp);
2625 spin_unlock_irqrestore(&qp->s_lock, flags);
2651 void (*cb)(struct rvt_qp *qp, u64 v))
2676 * Updates iter->qp with the current QP when the return
2679 * Return: 0 - iter->qp is valid 1 - no more QPs
2686 struct rvt_qp *pqp = iter->qp;
2687 struct rvt_qp *qp;
2693 * real hash table. Since the qp code sets
2694 * the qp->next hash link to NULL, this works just fine.
2698 * n = 0..iter->specials is the special qp indices
2706 qp = rcu_dereference(pqp->next);
2714 qp = rcu_dereference(rvp->qp[n & 1]);
2716 qp = rcu_dereference(
2721 pqp = qp;
2722 if (qp) {
2723 iter->qp = qp;
2750 void (*cb)(struct rvt_qp *qp, u64 v))
2764 rvt_get_qp(i.qp);
2766 i.cb(i.qp, i.v);
2768 rvt_put_qp(i.qp);
2778 void rvt_send_complete(struct rvt_qp *qp, struct rvt_swqe *wqe,
2784 if (!(ib_rvt_state_ops[qp->state] & RVT_PROCESS_OR_FLUSH_SEND))
2786 rdi = ib_to_rvt(qp->ibqp.device);
2788 old_last = qp->s_last;
2789 trace_rvt_qp_send_completion(qp, wqe, old_last);
2790 last = rvt_qp_complete_swqe(qp, wqe, rdi->wc_opcode[wqe->wr.opcode],
2792 if (qp->s_acked == old_last)
2793 qp->s_acked = last;
2794 if (qp->s_cur == old_last)
2795 qp->s_cur = last;
2796 if (qp->s_tail == old_last)
2797 qp->s_tail = last;
2798 if (qp->state == IB_QPS_SQD && last == qp->s_cur)
2799 qp->s_draining = 0;
2805 * @qp: associated QP
2812 void rvt_copy_sge(struct rvt_qp *qp, struct rvt_sge_state *ss,
2820 struct rvt_dev_info *rdi = ib_to_rvt(qp->ibqp.device);
2906 struct rvt_qp *qp;
2927 qp = rvt_lookup_qpn(ib_to_rvt(sqp->ibqp.device), rvp,
2964 if (!qp) {
2968 spin_lock_irqsave(&qp->r_lock, flags);
2969 if (!(ib_rvt_state_ops[qp->state] & RVT_PROCESS_RECV_OK) ||
2970 qp->ibqp.qp_type != sqp->ibqp.qp_type) {
2999 ret = rvt_get_rwqe(qp, false);
3004 if (wqe->length > qp->r_len)
3008 if (!rvt_invalidate_rkey(qp,
3025 if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_WRITE)))
3029 ret = rvt_get_rwqe(qp, true);
3037 copy_last = rvt_is_user_qp(qp);
3038 if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_WRITE)))
3043 if (unlikely(!rvt_rkey_ok(qp, &qp->r_sge.sge, wqe->length,
3048 qp->r_sge.sg_list = NULL;
3049 qp->r_sge.num_sge = 1;
3050 qp->r_sge.total_len = wqe->length;
3054 if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_READ)))
3056 if (unlikely(!rvt_rkey_ok(qp, &sqp->s_sge.sge, wqe->length,
3064 qp->r_sge.sge = wqe->sg_list[0];
3065 qp->r_sge.sg_list = wqe->sg_list + 1;
3066 qp->r_sge.num_sge = wqe->wr.num_sge;
3067 qp->r_sge.total_len = wqe->length;
3072 if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_ATOMIC)))
3076 if (unlikely(!rvt_rkey_ok(qp, &qp->r_sge.sge, sizeof(u64),
3082 maddr = (atomic64_t *)qp->r_sge.sge.vaddr;
3087 (u64)cmpxchg((u64 *)qp->r_sge.sge.vaddr,
3089 rvt_put_mr(qp->r_sge.sge.mr);
3090 qp->r_sge.num_sge = 0;
3103 rvt_copy_sge(qp, &qp->r_sge, sge->vaddr,
3109 rvt_put_ss(&qp->r_sge);
3111 if (!test_and_clear_bit(RVT_R_WRID_VALID, &qp->r_aflags))
3118 wc.wr_id = qp->r_wr_id;
3121 wc.qp = &qp->ibqp;
3122 wc.src_qp = qp->remote_qpn;
3123 wc.slid = rdma_ah_get_dlid(&qp->remote_ah_attr) & U16_MAX;
3124 wc.sl = rdma_ah_get_sl(&qp->remote_ah_attr);
3127 rvt_recv_cq(qp, &wc, wqe->wr.send_flags & IB_SEND_SOLICITED);
3130 spin_unlock_irqrestore(&qp->r_lock, flags);
3146 if (qp->ibqp.qp_type == IB_QPT_UC)
3159 spin_unlock_irqrestore(&qp->r_lock, flags);
3163 rvt_add_rnr_timer(sqp, qp->r_min_rnr_timer <<
3185 rvt_rc_error(qp, wc.status);
3188 spin_unlock_irqrestore(&qp->r_lock, flags);
3207 ev.element.qp = &sqp->ibqp;