diff options
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_rc.c')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_rc.c | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_rc.c b/drivers/infiniband/hw/ipath/ipath_rc.c index 5c29b2bfea1..459e46e2c01 100644 --- a/drivers/infiniband/hw/ipath/ipath_rc.c +++ b/drivers/infiniband/hw/ipath/ipath_rc.c @@ -647,6 +647,7 @@ static void send_rc_ack(struct ipath_qp *qp) queue_ack: spin_lock_irqsave(&qp->s_lock, flags); + dev->n_rc_qacks++; qp->s_flags |= IPATH_S_ACK_PENDING; qp->s_nak_state = qp->r_nak_state; qp->s_ack_psn = qp->r_ack_psn; @@ -798,11 +799,13 @@ bail: static inline void update_last_psn(struct ipath_qp *qp, u32 psn) { - if (qp->s_wait_credit) { - qp->s_wait_credit = 0; - tasklet_hi_schedule(&qp->s_task); + if (qp->s_last_psn != psn) { + qp->s_last_psn = psn; + if (qp->s_wait_credit) { + qp->s_wait_credit = 0; + tasklet_hi_schedule(&qp->s_task); + } } - qp->s_last_psn = psn; } /** @@ -959,8 +962,9 @@ static int do_rc_ack(struct ipath_qp *qp, u32 aeth, u32 psn, int opcode, /* If this is a partial ACK, reset the retransmit timer. */ if (qp->s_last != qp->s_tail) { spin_lock(&dev->pending_lock); - list_add_tail(&qp->timerwait, - &dev->pending[dev->pending_index]); + if (list_empty(&qp->timerwait)) + list_add_tail(&qp->timerwait, + &dev->pending[dev->pending_index]); spin_unlock(&dev->pending_lock); /* * If we get a partial ACK for a resent operation, @@ -1652,13 +1656,6 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, case OP(SEND_FIRST): if (!ipath_get_rwqe(qp, 0)) { rnr_nak: - /* - * A RNR NAK will ACK earlier sends and RDMA writes. - * Don't queue the NAK if a RDMA read or atomic - * is pending though. - */ - if (qp->r_nak_state) - goto done; qp->r_nak_state = IB_RNR_NAK | qp->r_min_rnr_timer; qp->r_ack_psn = qp->r_psn; goto send_ack; |