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path: root/drivers/infiniband/hw/ehca/ehca_reqs.c
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Diffstat (limited to 'drivers/infiniband/hw/ehca/ehca_reqs.c')
-rw-r--r--drivers/infiniband/hw/ehca/ehca_reqs.c60
1 files changed, 47 insertions, 13 deletions
diff --git a/drivers/infiniband/hw/ehca/ehca_reqs.c b/drivers/infiniband/hw/ehca/ehca_reqs.c
index 898c8b5c38d..4426d82fe79 100644
--- a/drivers/infiniband/hw/ehca/ehca_reqs.c
+++ b/drivers/infiniband/hw/ehca/ehca_reqs.c
@@ -139,6 +139,7 @@ static void trace_send_wr_ud(const struct ib_send_wr *send_wr)
static inline int ehca_write_swqe(struct ehca_qp *qp,
struct ehca_wqe *wqe_p,
const struct ib_send_wr *send_wr,
+ u32 sq_map_idx,
int hidden)
{
u32 idx;
@@ -157,7 +158,11 @@ static inline int ehca_write_swqe(struct ehca_qp *qp,
/* clear wqe header until sglist */
memset(wqe_p, 0, offsetof(struct ehca_wqe, u.ud_av.sg_list));
- wqe_p->work_request_id = send_wr->wr_id;
+ wqe_p->work_request_id = send_wr->wr_id & ~QMAP_IDX_MASK;
+ wqe_p->work_request_id |= sq_map_idx & QMAP_IDX_MASK;
+
+ qp->sq_map[sq_map_idx].app_wr_id = send_wr->wr_id & QMAP_IDX_MASK;
+ qp->sq_map[sq_map_idx].reported = 0;
switch (send_wr->opcode) {
case IB_WR_SEND:
@@ -381,6 +386,7 @@ static inline int post_one_send(struct ehca_qp *my_qp,
{
struct ehca_wqe *wqe_p;
int ret;
+ u32 sq_map_idx;
u64 start_offset = my_qp->ipz_squeue.current_q_offset;
/* get pointer next to free WQE */
@@ -393,8 +399,15 @@ static inline int post_one_send(struct ehca_qp *my_qp,
"qp_num=%x", my_qp->ib_qp.qp_num);
return -ENOMEM;
}
+
+ /*
+ * Get the index of the WQE in the send queue. The same index is used
+ * for writing into the sq_map.
+ */
+ sq_map_idx = start_offset / my_qp->ipz_squeue.qe_size;
+
/* write a SEND WQE into the QUEUE */
- ret = ehca_write_swqe(my_qp, wqe_p, cur_send_wr, hidden);
+ ret = ehca_write_swqe(my_qp, wqe_p, cur_send_wr, sq_map_idx, hidden);
/*
* if something failed,
* reset the free entry pointer to the start value
@@ -589,7 +602,7 @@ static inline int ehca_poll_cq_one(struct ib_cq *cq, struct ib_wc *wc)
struct ehca_qp *my_qp;
int cqe_count = 0, is_error;
-poll_cq_one_read_cqe:
+repoll:
cqe = (struct ehca_cqe *)
ipz_qeit_get_inc_valid(&my_cq->ipz_queue);
if (!cqe) {
@@ -617,7 +630,7 @@ poll_cq_one_read_cqe:
ehca_dmp(cqe, 64, "cq_num=%x qp_num=%x",
my_cq->cq_number, cqe->local_qp_number);
/* ignore this purged cqe */
- goto poll_cq_one_read_cqe;
+ goto repoll;
}
spin_lock_irqsave(&qp->spinlock_s, flags);
purgeflag = qp->sqerr_purgeflag;
@@ -636,7 +649,7 @@ poll_cq_one_read_cqe:
* that caused sqe and turn off purge flag
*/
qp->sqerr_purgeflag = 0;
- goto poll_cq_one_read_cqe;
+ goto repoll;
}
}
@@ -654,8 +667,34 @@ poll_cq_one_read_cqe:
my_cq, my_cq->cq_number);
}
- /* we got a completion! */
- wc->wr_id = cqe->work_request_id;
+ read_lock(&ehca_qp_idr_lock);
+ my_qp = idr_find(&ehca_qp_idr, cqe->qp_token);
+ read_unlock(&ehca_qp_idr_lock);
+ if (!my_qp)
+ goto repoll;
+ wc->qp = &my_qp->ib_qp;
+
+ if (!(cqe->w_completion_flags & WC_SEND_RECEIVE_BIT)) {
+ struct ehca_qmap_entry *qmap_entry;
+ /*
+ * We got a send completion and need to restore the original
+ * wr_id.
+ */
+ qmap_entry = &my_qp->sq_map[cqe->work_request_id &
+ QMAP_IDX_MASK];
+
+ if (qmap_entry->reported) {
+ ehca_warn(cq->device, "Double cqe on qp_num=%#x",
+ my_qp->real_qp_num);
+ /* found a double cqe, discard it and read next one */
+ goto repoll;
+ }
+ wc->wr_id = cqe->work_request_id & ~QMAP_IDX_MASK;
+ wc->wr_id |= qmap_entry->app_wr_id;
+ qmap_entry->reported = 1;
+ } else
+ /* We got a receive completion. */
+ wc->wr_id = cqe->work_request_id;
/* eval ib_wc_opcode */
wc->opcode = ib_wc_opcode[cqe->optype]-1;
@@ -667,7 +706,7 @@ poll_cq_one_read_cqe:
ehca_dmp(cqe, 64, "ehca_cq=%p cq_num=%x",
my_cq, my_cq->cq_number);
/* update also queue adder to throw away this entry!!! */
- goto poll_cq_one_exit0;
+ goto repoll;
}
/* eval ib_wc_status */
@@ -678,11 +717,6 @@ poll_cq_one_read_cqe:
} else
wc->status = IB_WC_SUCCESS;
- read_lock(&ehca_qp_idr_lock);
- my_qp = idr_find(&ehca_qp_idr, cqe->qp_token);
- wc->qp = &my_qp->ib_qp;
- read_unlock(&ehca_qp_idr_lock);
-
wc->byte_len = cqe->nr_bytes_transferred;
wc->pkey_index = cqe->pkey_index;
wc->slid = cqe->rlid;