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IB/ipath: Flush RWQEs if access error or invalid error seen

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If the receiver goes into the error state, we need to flush the
posted receive WQEs.

Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Bryan O'Sullivan 2006-09-28 09:00:14 -07:00 committed by Roland Dreier
parent 1fd3b40fde
commit 8d0208cb59
4 changed files with 26 additions and 9 deletions
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13
drivers/infiniband/hw/ipath/ipath_qp.c
View file

@ -335,6 +335,7 @@ static void ipath_reset_qp(struct ipath_qp *qp)
qp->s_ack_state = IB_OPCODE_RC_ACKNOWLEDGE;
qp->r_ack_state = IB_OPCODE_RC_ACKNOWLEDGE;
qp->r_nak_state = 0;
qp->r_wrid_valid = 0;
qp->s_rnr_timeout = 0;
qp->s_head = 0;
qp->s_tail = 0;
@ -353,12 +354,13 @@ static void ipath_reset_qp(struct ipath_qp *qp)
/**
* ipath_error_qp - put a QP into an error state
* @qp: the QP to put into an error state
* @err: the receive completion error to signal if a RWQE is active
*
* Flushes both send and receive work queues.
* QP s_lock should be held and interrupts disabled.
*/
void ipath_error_qp(struct ipath_qp *qp)
void ipath_error_qp(struct ipath_qp *qp, enum ib_wc_status err)
{
struct ipath_ibdev *dev = to_idev(qp->ibqp.device);
struct ib_wc wc;
@ -374,7 +376,6 @@ void ipath_error_qp(struct ipath_qp *qp)
list_del_init(&qp->piowait);
spin_unlock(&dev->pending_lock);
wc.status = IB_WC_WR_FLUSH_ERR;
wc.vendor_err = 0;
wc.byte_len = 0;
wc.imm_data = 0;
@ -386,6 +387,12 @@ void ipath_error_qp(struct ipath_qp *qp)
wc.sl = 0;
wc.dlid_path_bits = 0;
wc.port_num = 0;
if (qp->r_wrid_valid) {
qp->r_wrid_valid = 0;
wc.status = err;
ipath_cq_enter(to_icq(qp->ibqp.send_cq), &wc, 1);
}
wc.status = IB_WC_WR_FLUSH_ERR;
while (qp->s_last != qp->s_head) {
struct ipath_swqe *wqe = get_swqe_ptr(qp, qp->s_last);
@ -502,7 +509,7 @@ int ipath_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
break;
case IB_QPS_ERR:
ipath_error_qp(qp);
ipath_error_qp(qp, IB_WC_GENERAL_ERR);
break;
default:

18
drivers/infiniband/hw/ipath/ipath_rc.c
View file

@ -1293,6 +1293,14 @@ static inline int ipath_rc_rcv_error(struct ipath_ibdev *dev,
return 1;
}
static void ipath_rc_error(struct ipath_qp *qp, enum ib_wc_status err)
{
spin_lock_irq(&qp->s_lock);
qp->state = IB_QPS_ERR;
ipath_error_qp(qp, err);
spin_unlock_irq(&qp->s_lock);
}
/**
* ipath_rc_rcv - process an incoming RC packet
* @dev: the device this packet came in on
@ -1385,8 +1393,7 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
*/
if (qp->r_ack_state >= OP(COMPARE_SWAP))
goto send_ack;
/* XXX Flush WQEs */
qp->state = IB_QPS_ERR;
ipath_rc_error(qp, IB_WC_REM_INV_REQ_ERR);
qp->r_ack_state = OP(SEND_ONLY);
qp->r_nak_state = IB_NAK_INVALID_REQUEST;
qp->r_ack_psn = qp->r_psn;
@ -1492,9 +1499,9 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
goto nack_inv;
ipath_copy_sge(&qp->r_sge, data, tlen);
qp->r_msn++;
if (opcode == OP(RDMA_WRITE_LAST) ||
opcode == OP(RDMA_WRITE_ONLY))
if (!qp->r_wrid_valid)
break;
qp->r_wrid_valid = 0;
wc.wr_id = qp->r_wr_id;
wc.status = IB_WC_SUCCESS;
wc.opcode = IB_WC_RECV;
@ -1685,8 +1692,7 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
* is pending though.
*/
if (qp->r_ack_state < OP(COMPARE_SWAP)) {
/* XXX Flush WQEs */
qp->state = IB_QPS_ERR;
ipath_rc_error(qp, IB_WC_REM_ACCESS_ERR);
qp->r_ack_state = OP(RDMA_WRITE_ONLY);
qp->r_nak_state = IB_NAK_REMOTE_ACCESS_ERROR;
qp->r_ack_psn = qp->r_psn;

1
drivers/infiniband/hw/ipath/ipath_ruc.c
View file

@ -229,6 +229,7 @@ int ipath_get_rwqe(struct ipath_qp *qp, int wr_id_only)
}
}
spin_unlock_irqrestore(&rq->lock, flags);
qp->r_wrid_valid = 1;
bail:
return ret;

3
drivers/infiniband/hw/ipath/ipath_verbs.h
View file

@ -365,6 +365,7 @@ struct ipath_qp {
u8 r_min_rnr_timer; /* retry timeout value for RNR NAKs */
u8 r_reuse_sge; /* for UC receive errors */
u8 r_sge_inx; /* current index into sg_list */
u8 r_wrid_valid; /* r_wrid set but CQ entry not yet made */
u8 qp_access_flags;
u8 s_max_sge; /* size of s_wq->sg_list */
u8 s_retry_cnt; /* number of times to retry */
@ -639,6 +640,8 @@ struct ib_qp *ipath_create_qp(struct ib_pd *ibpd,
int ipath_destroy_qp(struct ib_qp *ibqp);
void ipath_error_qp(struct ipath_qp *qp, enum ib_wc_status err);
int ipath_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
int attr_mask, struct ib_udata *udata);