IB/hfi1: Add received request info to qp_stats

The rvt_ack_entry pointed to by s_tail_ack_queue provides important
info about the request that has just been processed or is being processed
on the responder side of a RC connection. This patch adds this info to
the qp_stats to assist debugging.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/hfi1/qp.c b/drivers/infiniband/hw/hfi1/qp.c
index 0fca6dfe8d9f109ad2f924a522c4fa8ec9606b95..ee836c0978ccdecaf237de574a1bcee20c221d04 100644 (file)
--- a/drivers/infiniband/hw/hfi1/qp.c
+++ b/drivers/infiniband/hw/hfi1/qp.c
@@ -626,12 +626,15 @@ void qp_iter_print(struct seq_file *s, struct qp_iter *iter)
        struct hfi1_qp_priv *priv = qp->priv;
        struct sdma_engine *sde;
        struct send_context *send_context;
+       struct rvt_ack_entry *e = NULL;
 
        sde = qp_to_sdma_engine(qp, priv->s_sc);
        wqe = rvt_get_swqe_ptr(qp, qp->s_last);
        send_context = qp_to_send_context(qp, priv->s_sc);
+       if (qp->s_ack_queue)
+               e = &qp->s_ack_queue[qp->s_tail_ack_queue];
        seq_printf(s,
-                  "N %d %s QP %x R %u %s %u %u %u f=%x %u %u %u %u %u %u SPSN %x %x %x %x %x RPSN %x S(%u %u %u %u %u %u %u) R(%u %u %u) RQP %x LID %x SL %u MTU %u %u %u %u %u SDE %p,%u SC %p,%u SCQ %u %u PID %d\n",
+                  "N %d %s QP %x R %u %s %u %u %u f=%x %u %u %u %u %u %u SPSN %x %x %x %x %x RPSN %x S(%u %u %u %u %u %u %u) R(%u %u %u) RQP %x LID %x SL %u MTU %u %u %u %u %u SDE %p,%u SC %p,%u SCQ %u %u PID %d E %x %x %x\n",
                   iter->n,
                   qp_idle(qp) ? "I" : "B",
                   qp->ibqp.qp_num,
@@ -672,7 +675,11 @@ void qp_iter_print(struct seq_file *s, struct qp_iter *iter)
                   send_context ? send_context->sw_index : 0,
                   ibcq_to_rvtcq(qp->ibqp.send_cq)->queue->head,
                   ibcq_to_rvtcq(qp->ibqp.send_cq)->queue->tail,
-                  qp->pid);
+                  qp->pid,
+                  /* ack queue information */
+                  e ? e->opcode : 0,
+                  e ? e->psn : 0,
+                  e ? e->lpsn : 0);
 }
 
 void *qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp)