/*
- * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved.
+ * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved.
* Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* SOFTWARE.
*/
+#include <linux/io.h>
+
#include "ipath_verbs.h"
#include "ipath_kernel.h"
u32 bth0;
u32 bth2;
+ /* Don't send an ACK if we aren't supposed to. */
+ if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK))
+ goto bail;
+
/* header size in 32-bit words LRH+BTH = (8+12)/4. */
hwords = 5;
ipath_make_rc_ack(dev, qp, ohdr, pmtu))
goto done;
- if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK) ||
- qp->s_rnr_timeout || qp->s_wait_credit)
- goto bail;
+ if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK)) {
+ if (!(ib_ipath_state_ops[qp->state] & IPATH_FLUSH_SEND))
+ goto bail;
+ /* We are in the error state, flush the work request. */
+ if (qp->s_last == qp->s_head)
+ goto bail;
+ /* If DMAs are in progress, we can't flush immediately. */
+ if (atomic_read(&qp->s_dma_busy)) {
+ qp->s_flags |= IPATH_S_WAIT_DMA;
+ goto bail;
+ }
+ wqe = get_swqe_ptr(qp, qp->s_last);
+ ipath_send_complete(qp, wqe, IB_WC_WR_FLUSH_ERR);
+ goto done;
+ }
- /* Limit the number of packets sent without an ACK. */
- if (ipath_cmp24(qp->s_psn, qp->s_last_psn + IPATH_PSN_CREDIT) > 0) {
- qp->s_wait_credit = 1;
- dev->n_rc_stalls++;
+ /* Leave BUSY set until RNR timeout. */
+ if (qp->s_rnr_timeout) {
+ qp->s_flags |= IPATH_S_WAITING;
goto bail;
}
wqe = get_swqe_ptr(qp, qp->s_cur);
switch (qp->s_state) {
default:
+ if (!(ib_ipath_state_ops[qp->state] &
+ IPATH_PROCESS_NEXT_SEND_OK))
+ goto bail;
/*
* Resend an old request or start a new one.
*
case IB_WR_SEND_WITH_IMM:
/* If no credit, return. */
if (qp->s_lsn != (u32) -1 &&
- ipath_cmp24(wqe->ssn, qp->s_lsn + 1) > 0)
+ ipath_cmp24(wqe->ssn, qp->s_lsn + 1) > 0) {
+ qp->s_flags |= IPATH_S_WAIT_SSN_CREDIT;
goto bail;
+ }
wqe->lpsn = wqe->psn;
if (len > pmtu) {
wqe->lpsn += (len - 1) / pmtu;
else {
qp->s_state = OP(SEND_ONLY_WITH_IMMEDIATE);
/* Immediate data comes after the BTH */
- ohdr->u.imm_data = wqe->wr.imm_data;
+ ohdr->u.imm_data = wqe->wr.ex.imm_data;
hwords += 1;
}
if (wqe->wr.send_flags & IB_SEND_SOLICITED)
case IB_WR_RDMA_WRITE_WITH_IMM:
/* If no credit, return. */
if (qp->s_lsn != (u32) -1 &&
- ipath_cmp24(wqe->ssn, qp->s_lsn + 1) > 0)
+ ipath_cmp24(wqe->ssn, qp->s_lsn + 1) > 0) {
+ qp->s_flags |= IPATH_S_WAIT_SSN_CREDIT;
goto bail;
+ }
ohdr->u.rc.reth.vaddr =
cpu_to_be64(wqe->wr.wr.rdma.remote_addr);
ohdr->u.rc.reth.rkey =
qp->s_state =
OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE);
/* Immediate data comes after RETH */
- ohdr->u.rc.imm_data = wqe->wr.imm_data;
+ ohdr->u.rc.imm_data = wqe->wr.ex.imm_data;
hwords += 1;
if (wqe->wr.send_flags & IB_SEND_SOLICITED)
bth0 |= 1 << 23;
else {
qp->s_state = OP(SEND_LAST_WITH_IMMEDIATE);
/* Immediate data comes after the BTH */
- ohdr->u.imm_data = wqe->wr.imm_data;
+ ohdr->u.imm_data = wqe->wr.ex.imm_data;
hwords += 1;
}
if (wqe->wr.send_flags & IB_SEND_SOLICITED)
else {
qp->s_state = OP(RDMA_WRITE_LAST_WITH_IMMEDIATE);
/* Immediate data comes after the BTH */
- ohdr->u.imm_data = wqe->wr.imm_data;
+ ohdr->u.imm_data = wqe->wr.ex.imm_data;
hwords += 1;
if (wqe->wr.send_flags & IB_SEND_SOLICITED)
bth0 |= 1 << 23;
ipath_make_ruc_header(dev, qp, ohdr, bth0 | (qp->s_state << 24), bth2);
done:
ret = 1;
+ goto unlock;
+
bail:
+ qp->s_flags &= ~IPATH_S_BUSY;
+unlock:
spin_unlock_irqrestore(&qp->s_lock, flags);
return ret;
}
static void send_rc_ack(struct ipath_qp *qp)
{
struct ipath_ibdev *dev = to_idev(qp->ibqp.device);
+ struct ipath_devdata *dd;
u16 lrh0;
u32 bth0;
u32 hwords;
+ u32 __iomem *piobuf;
struct ipath_ib_header hdr;
struct ipath_other_headers *ohdr;
unsigned long flags;
+ spin_lock_irqsave(&qp->s_lock, flags);
+
/* Don't send ACK or NAK if a RDMA read or atomic is pending. */
if (qp->r_head_ack_queue != qp->s_tail_ack_queue ||
(qp->s_flags & IPATH_S_ACK_PENDING) ||
qp->s_ack_state != OP(ACKNOWLEDGE))
goto queue_ack;
+ spin_unlock_irqrestore(&qp->s_lock, flags);
+
+ /* Don't try to send ACKs if the link isn't ACTIVE */
+ dd = dev->dd;
+ if (!(dd->ipath_flags & IPATH_LINKACTIVE))
+ goto done;
+
+ piobuf = ipath_getpiobuf(dd, 0, NULL);
+ if (!piobuf) {
+ /*
+ * We are out of PIO buffers at the moment.
+ * Pass responsibility for sending the ACK to the
+ * send tasklet so that when a PIO buffer becomes
+ * available, the ACK is sent ahead of other outgoing
+ * packets.
+ */
+ spin_lock_irqsave(&qp->s_lock, flags);
+ goto queue_ack;
+ }
+
/* Construct the header. */
ohdr = &hdr.u.oth;
lrh0 = IPATH_LRH_BTH;
lrh0 = IPATH_LRH_GRH;
}
/* read pkey_index w/o lock (its atomic) */
- bth0 = ipath_get_pkey(dev->dd, qp->s_pkey_index) |
+ bth0 = ipath_get_pkey(dd, qp->s_pkey_index) |
(OP(ACKNOWLEDGE) << 24) | (1 << 22);
if (qp->r_nak_state)
ohdr->u.aeth = cpu_to_be32((qp->r_msn & IPATH_MSN_MASK) |
hdr.lrh[0] = cpu_to_be16(lrh0);
hdr.lrh[1] = cpu_to_be16(qp->remote_ah_attr.dlid);
hdr.lrh[2] = cpu_to_be16(hwords + SIZE_OF_CRC);
- hdr.lrh[3] = cpu_to_be16(dev->dd->ipath_lid);
+ hdr.lrh[3] = cpu_to_be16(dd->ipath_lid);
ohdr->bth[0] = cpu_to_be32(bth0);
ohdr->bth[1] = cpu_to_be32(qp->remote_qpn);
ohdr->bth[2] = cpu_to_be32(qp->r_ack_psn & IPATH_PSN_MASK);
- /*
- * If we can send the ACK, clear the ACK state.
- */
- if (ipath_verbs_send(qp, &hdr, hwords, NULL, 0) == 0) {
- dev->n_unicast_xmit++;
- goto done;
- }
+ writeq(hwords + 1, piobuf);
- /*
- * We are out of PIO buffers at the moment.
- * Pass responsibility for sending the ACK to the
- * send tasklet so that when a PIO buffer becomes
- * available, the ACK is sent ahead of other outgoing
- * packets.
- */
- dev->n_rc_qacks++;
+ if (dd->ipath_flags & IPATH_PIO_FLUSH_WC) {
+ u32 *hdrp = (u32 *) &hdr;
-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;
- spin_unlock_irqrestore(&qp->s_lock, flags);
+ ipath_flush_wc();
+ __iowrite32_copy(piobuf + 2, hdrp, hwords - 1);
+ ipath_flush_wc();
+ __raw_writel(hdrp[hwords - 1], piobuf + hwords + 1);
+ } else
+ __iowrite32_copy(piobuf + 2, (u32 *) &hdr, hwords);
- /* Call ipath_do_rc_send() in another thread. */
- tasklet_hi_schedule(&qp->s_task);
+ ipath_flush_wc();
+ dev->n_unicast_xmit++;
+ goto done;
+
+queue_ack:
+ if (ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK) {
+ 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;
+
+ /* Schedule the send tasklet. */
+ ipath_schedule_send(qp);
+ }
+ spin_unlock_irqrestore(&qp->s_lock, flags);
done:
return;
}
/*
* Set the state to restart in the middle of a request.
* Don't change the s_sge, s_cur_sge, or s_cur_size.
- * See ipath_do_rc_send().
+ * See ipath_make_rc_req().
*/
switch (opcode) {
case IB_WR_SEND:
*
* The QP s_lock should be held and interrupts disabled.
*/
-void ipath_restart_rc(struct ipath_qp *qp, u32 psn, struct ib_wc *wc)
+void ipath_restart_rc(struct ipath_qp *qp, u32 psn)
{
struct ipath_swqe *wqe = get_swqe_ptr(qp, qp->s_last);
struct ipath_ibdev *dev;
if (qp->s_retry == 0) {
- wc->wr_id = wqe->wr.wr_id;
- wc->status = IB_WC_RETRY_EXC_ERR;
- wc->opcode = ib_ipath_wc_opcode[wqe->wr.opcode];
- wc->vendor_err = 0;
- wc->byte_len = 0;
- wc->qp = &qp->ibqp;
- wc->imm_data = 0;
- wc->src_qp = qp->remote_qpn;
- wc->wc_flags = 0;
- wc->pkey_index = 0;
- wc->slid = qp->remote_ah_attr.dlid;
- wc->sl = qp->remote_ah_attr.sl;
- wc->dlid_path_bits = 0;
- wc->port_num = 0;
- ipath_sqerror_qp(qp, wc);
+ ipath_send_complete(qp, wqe, IB_WC_RETRY_EXC_ERR);
+ ipath_error_qp(qp, IB_WC_WR_FLUSH_ERR);
goto bail;
}
qp->s_retry--;
spin_lock(&dev->pending_lock);
if (!list_empty(&qp->timerwait))
list_del_init(&qp->timerwait);
+ if (!list_empty(&qp->piowait))
+ list_del_init(&qp->piowait);
spin_unlock(&dev->pending_lock);
if (wqe->wr.opcode == IB_WR_RDMA_READ)
dev->n_rc_resends += (qp->s_psn - psn) & IPATH_PSN_MASK;
reset_psn(qp, psn);
- tasklet_hi_schedule(&qp->s_task);
+ ipath_schedule_send(qp);
bail:
return;
static inline void update_last_psn(struct ipath_qp *qp, u32 psn)
{
- 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;
}
/**
{
struct ipath_ibdev *dev = to_idev(qp->ibqp.device);
struct ib_wc wc;
+ enum ib_wc_status status;
struct ipath_swqe *wqe;
int ret = 0;
u32 ack_psn;
*/
update_last_psn(qp, wqe->psn - 1);
/* Retry this request. */
- ipath_restart_rc(qp, wqe->psn, &wc);
+ ipath_restart_rc(qp, wqe->psn);
/*
* No need to process the ACK/NAK since we are
* restarting an earlier request.
wqe->wr.opcode == IB_WR_ATOMIC_FETCH_AND_ADD)) {
qp->s_num_rd_atomic--;
/* Restart sending task if fence is complete */
- if ((qp->s_flags & IPATH_S_FENCE_PENDING) &&
- !qp->s_num_rd_atomic) {
- qp->s_flags &= ~IPATH_S_FENCE_PENDING;
- tasklet_hi_schedule(&qp->s_task);
- } else if (qp->s_flags & IPATH_S_RDMAR_PENDING) {
- qp->s_flags &= ~IPATH_S_RDMAR_PENDING;
- tasklet_hi_schedule(&qp->s_task);
- }
+ if (((qp->s_flags & IPATH_S_FENCE_PENDING) &&
+ !qp->s_num_rd_atomic) ||
+ qp->s_flags & IPATH_S_RDMAR_PENDING)
+ ipath_schedule_send(qp);
}
/* Post a send completion queue entry if requested. */
if (!(qp->s_flags & IPATH_S_SIGNAL_REQ_WR) ||
(wqe->wr.send_flags & IB_SEND_SIGNALED)) {
+ memset(&wc, 0, sizeof wc);
wc.wr_id = wqe->wr.wr_id;
wc.status = IB_WC_SUCCESS;
wc.opcode = ib_ipath_wc_opcode[wqe->wr.opcode];
- wc.vendor_err = 0;
wc.byte_len = wqe->length;
- wc.imm_data = 0;
wc.qp = &qp->ibqp;
wc.src_qp = qp->remote_qpn;
- wc.wc_flags = 0;
- wc.pkey_index = 0;
wc.slid = qp->remote_ah_attr.dlid;
wc.sl = qp->remote_ah_attr.sl;
- wc.dlid_path_bits = 0;
- wc.port_num = 0;
ipath_cq_enter(to_icq(qp->ibqp.send_cq), &wc, 0);
}
qp->s_retry = qp->s_retry_cnt;
} else {
if (++qp->s_last >= qp->s_size)
qp->s_last = 0;
+ if (qp->state == IB_QPS_SQD && qp->s_last == qp->s_cur)
+ qp->s_draining = 0;
if (qp->s_last == qp->s_tail)
break;
wqe = get_swqe_ptr(qp, qp->s_last);
*/
if (ipath_cmp24(qp->s_psn, psn) <= 0) {
reset_psn(qp, psn + 1);
- tasklet_hi_schedule(&qp->s_task);
+ ipath_schedule_send(qp);
}
} else if (ipath_cmp24(qp->s_psn, psn) <= 0) {
qp->s_state = OP(SEND_LAST);
if (qp->s_last == qp->s_tail)
goto bail;
if (qp->s_rnr_retry == 0) {
- wc.status = IB_WC_RNR_RETRY_EXC_ERR;
+ status = IB_WC_RNR_RETRY_EXC_ERR;
goto class_b;
}
if (qp->s_rnr_retry_cnt < 7)
ib_ipath_rnr_table[(aeth >> IPATH_AETH_CREDIT_SHIFT) &
IPATH_AETH_CREDIT_MASK];
ipath_insert_rnr_queue(qp);
+ ipath_schedule_send(qp);
goto bail;
case 3: /* NAK */
* RDMA READ response which terminates the RDMA
* READ.
*/
- ipath_restart_rc(qp, psn, &wc);
+ ipath_restart_rc(qp, psn);
break;
case 1: /* Invalid Request */
- wc.status = IB_WC_REM_INV_REQ_ERR;
+ status = IB_WC_REM_INV_REQ_ERR;
dev->n_other_naks++;
goto class_b;
case 2: /* Remote Access Error */
- wc.status = IB_WC_REM_ACCESS_ERR;
+ status = IB_WC_REM_ACCESS_ERR;
dev->n_other_naks++;
goto class_b;
case 3: /* Remote Operation Error */
- wc.status = IB_WC_REM_OP_ERR;
+ status = IB_WC_REM_OP_ERR;
dev->n_other_naks++;
class_b:
- wc.wr_id = wqe->wr.wr_id;
- wc.opcode = ib_ipath_wc_opcode[wqe->wr.opcode];
- wc.vendor_err = 0;
- wc.byte_len = 0;
- wc.qp = &qp->ibqp;
- wc.imm_data = 0;
- wc.src_qp = qp->remote_qpn;
- wc.wc_flags = 0;
- wc.pkey_index = 0;
- wc.slid = qp->remote_ah_attr.dlid;
- wc.sl = qp->remote_ah_attr.sl;
- wc.dlid_path_bits = 0;
- wc.port_num = 0;
- ipath_sqerror_qp(qp, &wc);
+ ipath_send_complete(qp, wqe, status);
+ ipath_error_qp(qp, IB_WC_WR_FLUSH_ERR);
break;
default:
int header_in_data)
{
struct ipath_swqe *wqe;
+ enum ib_wc_status status;
unsigned long flags;
- struct ib_wc wc;
int diff;
u32 pad;
u32 aeth;
spin_lock_irqsave(&qp->s_lock, flags);
+ /* Double check we can process this now that we hold the s_lock. */
+ if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK))
+ goto ack_done;
+
/* Ignore invalid responses. */
if (ipath_cmp24(psn, qp->s_next_psn) >= 0)
goto ack_done;
if (unlikely(qp->s_last == qp->s_tail))
goto ack_done;
wqe = get_swqe_ptr(qp, qp->s_last);
+ status = IB_WC_SUCCESS;
switch (opcode) {
case OP(ACKNOWLEDGE):
wqe = get_swqe_ptr(qp, qp->s_last);
if (unlikely(wqe->wr.opcode != IB_WR_RDMA_READ))
goto ack_op_err;
+ qp->r_flags &= ~IPATH_R_RDMAR_SEQ;
/*
* If this is a response to a resent RDMA read, we
* have to be careful to copy the data to the right
/* no AETH, no ACK */
if (unlikely(ipath_cmp24(psn, qp->s_last_psn + 1))) {
dev->n_rdma_seq++;
- ipath_restart_rc(qp, qp->s_last_psn + 1, &wc);
+ if (qp->r_flags & IPATH_R_RDMAR_SEQ)
+ goto ack_done;
+ qp->r_flags |= IPATH_R_RDMAR_SEQ;
+ ipath_restart_rc(qp, qp->s_last_psn + 1);
goto ack_done;
}
if (unlikely(wqe->wr.opcode != IB_WR_RDMA_READ))
list_move_tail(&qp->timerwait,
&dev->pending[dev->pending_index]);
spin_unlock(&dev->pending_lock);
+
+ if (opcode == OP(RDMA_READ_RESPONSE_MIDDLE))
+ qp->s_retry = qp->s_retry_cnt;
+
/*
* Update the RDMA receive state but do the copy w/o
* holding the locks and blocking interrupts.
/* ACKs READ req. */
if (unlikely(ipath_cmp24(psn, qp->s_last_psn + 1))) {
dev->n_rdma_seq++;
- ipath_restart_rc(qp, qp->s_last_psn + 1, &wc);
+ if (qp->r_flags & IPATH_R_RDMAR_SEQ)
+ goto ack_done;
+ qp->r_flags |= IPATH_R_RDMAR_SEQ;
+ ipath_restart_rc(qp, qp->s_last_psn + 1);
goto ack_done;
}
if (unlikely(wqe->wr.opcode != IB_WR_RDMA_READ))
goto ack_done;
}
-ack_done:
- spin_unlock_irqrestore(&qp->s_lock, flags);
- goto bail;
-
ack_op_err:
- wc.status = IB_WC_LOC_QP_OP_ERR;
+ status = IB_WC_LOC_QP_OP_ERR;
goto ack_err;
ack_len_err:
- wc.status = IB_WC_LOC_LEN_ERR;
+ status = IB_WC_LOC_LEN_ERR;
ack_err:
- wc.wr_id = wqe->wr.wr_id;
- wc.opcode = ib_ipath_wc_opcode[wqe->wr.opcode];
- wc.vendor_err = 0;
- wc.byte_len = 0;
- wc.imm_data = 0;
- wc.qp = &qp->ibqp;
- wc.src_qp = qp->remote_qpn;
- wc.wc_flags = 0;
- wc.pkey_index = 0;
- wc.slid = qp->remote_ah_attr.dlid;
- wc.sl = qp->remote_ah_attr.sl;
- wc.dlid_path_bits = 0;
- wc.port_num = 0;
- ipath_sqerror_qp(qp, &wc);
+ ipath_send_complete(qp, wqe, status);
+ ipath_error_qp(qp, IB_WC_WR_FLUSH_ERR);
+ack_done:
spin_unlock_irqrestore(&qp->s_lock, flags);
bail:
return;
psn &= IPATH_PSN_MASK;
e = NULL;
old_req = 1;
+
spin_lock_irqsave(&qp->s_lock, flags);
+ /* Double check we can process this now that we hold the s_lock. */
+ if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK))
+ goto unlock_done;
+
for (i = qp->r_head_ack_queue; ; i = prev) {
if (i == qp->s_tail_ack_queue)
old_req = 0;
break;
}
qp->r_nak_state = 0;
- tasklet_hi_schedule(&qp->s_task);
+ ipath_schedule_send(qp);
unlock_done:
spin_unlock_irqrestore(&qp->s_lock, flags);
return 0;
}
-static void ipath_rc_error(struct ipath_qp *qp, enum ib_wc_status err)
+void ipath_rc_error(struct ipath_qp *qp, enum ib_wc_status err)
{
unsigned long flags;
int lastwqe;
spin_lock_irqsave(&qp->s_lock, flags);
- qp->state = IB_QPS_ERR;
lastwqe = ipath_error_qp(qp, err);
spin_unlock_irqrestore(&qp->s_lock, flags);
static inline void ipath_update_ack_queue(struct ipath_qp *qp, unsigned n)
{
- unsigned long flags;
unsigned next;
next = n + 1;
if (next > IPATH_MAX_RDMA_ATOMIC)
next = 0;
- spin_lock_irqsave(&qp->s_lock, flags);
if (n == qp->s_tail_ack_queue) {
qp->s_tail_ack_queue = next;
qp->s_ack_state = OP(ACKNOWLEDGE);
}
- spin_unlock_irqrestore(&qp->s_lock, flags);
}
/**
int diff;
struct ib_reth *reth;
int header_in_data;
+ unsigned long flags;
/* Validate the SLID. See Ch. 9.6.1.5 */
if (unlikely(be16_to_cpu(hdr->lrh[3]) != qp->remote_ah_attr.dlid))
opcode == OP(SEND_LAST) ||
opcode == OP(SEND_LAST_WITH_IMMEDIATE))
break;
- nack_inv:
- ipath_rc_error(qp, IB_WC_REM_INV_REQ_ERR);
- qp->r_nak_state = IB_NAK_INVALID_REQUEST;
- qp->r_ack_psn = qp->r_psn;
- goto send_ack;
+ goto nack_inv;
case OP(RDMA_WRITE_FIRST):
case OP(RDMA_WRITE_MIDDLE):
break;
}
- wc.imm_data = 0;
- wc.wc_flags = 0;
+ memset(&wc, 0, sizeof wc);
/* OK, process the packet. */
switch (opcode) {
case OP(SEND_FIRST):
- if (!ipath_get_rwqe(qp, 0)) {
- rnr_nak:
- qp->r_nak_state = IB_RNR_NAK | qp->r_min_rnr_timer;
- qp->r_ack_psn = qp->r_psn;
- goto send_ack;
- }
+ if (!ipath_get_rwqe(qp, 0))
+ goto rnr_nak;
qp->r_rcv_len = 0;
/* FALLTHROUGH */
case OP(SEND_MIDDLE):
case OP(SEND_LAST_WITH_IMMEDIATE):
send_last_imm:
if (header_in_data) {
- wc.imm_data = *(__be32 *) data;
+ wc.ex.imm_data = *(__be32 *) data;
data += sizeof(__be32);
} else {
/* Immediate data comes after BTH */
- wc.imm_data = ohdr->u.imm_data;
+ wc.ex.imm_data = ohdr->u.imm_data;
}
hdrsize += 4;
wc.wc_flags = IB_WC_WITH_IMM;
goto nack_inv;
ipath_copy_sge(&qp->r_sge, data, tlen);
qp->r_msn++;
- if (!qp->r_wrid_valid)
+ if (!test_and_clear_bit(IPATH_R_WRID_VALID, &qp->r_aflags))
break;
- qp->r_wrid_valid = 0;
wc.wr_id = qp->r_wr_id;
wc.status = IB_WC_SUCCESS;
- wc.opcode = IB_WC_RECV;
- wc.vendor_err = 0;
+ if (opcode == OP(RDMA_WRITE_LAST_WITH_IMMEDIATE) ||
+ opcode == OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE))
+ wc.opcode = IB_WC_RECV_RDMA_WITH_IMM;
+ else
+ wc.opcode = IB_WC_RECV;
wc.qp = &qp->ibqp;
wc.src_qp = qp->remote_qpn;
- wc.pkey_index = 0;
wc.slid = qp->remote_ah_attr.dlid;
wc.sl = qp->remote_ah_attr.sl;
- wc.dlid_path_bits = 0;
- wc.port_num = 0;
/* Signal completion event if the solicited bit is set. */
ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc,
(ohdr->bth[0] &
next = qp->r_head_ack_queue + 1;
if (next > IPATH_MAX_RDMA_ATOMIC)
next = 0;
+ spin_lock_irqsave(&qp->s_lock, flags);
+ /* Double check we can process this while holding the s_lock. */
+ if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK))
+ goto unlock;
if (unlikely(next == qp->s_tail_ack_queue)) {
if (!qp->s_ack_queue[next].sent)
- goto nack_inv;
+ goto nack_inv_unlck;
ipath_update_ack_queue(qp, next);
}
e = &qp->s_ack_queue[qp->r_head_ack_queue];
ok = ipath_rkey_ok(qp, &e->rdma_sge, len, vaddr,
rkey, IB_ACCESS_REMOTE_READ);
if (unlikely(!ok))
- goto nack_acc;
+ goto nack_acc_unlck;
/*
* Update the next expected PSN. We add 1 later
* below, so only add the remainder here.
qp->r_psn++;
qp->r_state = opcode;
qp->r_nak_state = 0;
- barrier();
qp->r_head_ack_queue = next;
- /* Call ipath_do_rc_send() in another thread. */
- tasklet_hi_schedule(&qp->s_task);
+ /* Schedule the send tasklet. */
+ ipath_schedule_send(qp);
- goto done;
+ goto unlock;
}
case OP(COMPARE_SWAP):
next = qp->r_head_ack_queue + 1;
if (next > IPATH_MAX_RDMA_ATOMIC)
next = 0;
+ spin_lock_irqsave(&qp->s_lock, flags);
+ /* Double check we can process this while holding the s_lock. */
+ if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK))
+ goto unlock;
if (unlikely(next == qp->s_tail_ack_queue)) {
if (!qp->s_ack_queue[next].sent)
- goto nack_inv;
+ goto nack_inv_unlck;
ipath_update_ack_queue(qp, next);
}
if (!header_in_data)
vaddr = ((u64) be32_to_cpu(ateth->vaddr[0]) << 32) |
be32_to_cpu(ateth->vaddr[1]);
if (unlikely(vaddr & (sizeof(u64) - 1)))
- goto nack_inv;
+ goto nack_inv_unlck;
rkey = be32_to_cpu(ateth->rkey);
/* Check rkey & NAK */
if (unlikely(!ipath_rkey_ok(qp, &qp->r_sge,
sizeof(u64), vaddr, rkey,
IB_ACCESS_REMOTE_ATOMIC)))
- goto nack_acc;
+ goto nack_acc_unlck;
/* Perform atomic OP and save result. */
maddr = (atomic64_t *) qp->r_sge.sge.vaddr;
sdata = be64_to_cpu(ateth->swap_data);
qp->r_psn++;
qp->r_state = opcode;
qp->r_nak_state = 0;
- barrier();
qp->r_head_ack_queue = next;
- /* Call ipath_do_rc_send() in another thread. */
- tasklet_hi_schedule(&qp->s_task);
+ /* Schedule the send tasklet. */
+ ipath_schedule_send(qp);
- goto done;
+ goto unlock;
}
default:
goto send_ack;
goto done;
+rnr_nak:
+ qp->r_nak_state = IB_RNR_NAK | qp->r_min_rnr_timer;
+ qp->r_ack_psn = qp->r_psn;
+ goto send_ack;
+
+nack_inv_unlck:
+ spin_unlock_irqrestore(&qp->s_lock, flags);
+nack_inv:
+ ipath_rc_error(qp, IB_WC_LOC_QP_OP_ERR);
+ qp->r_nak_state = IB_NAK_INVALID_REQUEST;
+ qp->r_ack_psn = qp->r_psn;
+ goto send_ack;
+
+nack_acc_unlck:
+ spin_unlock_irqrestore(&qp->s_lock, flags);
nack_acc:
- ipath_rc_error(qp, IB_WC_REM_ACCESS_ERR);
+ ipath_rc_error(qp, IB_WC_LOC_PROT_ERR);
qp->r_nak_state = IB_NAK_REMOTE_ACCESS_ERROR;
qp->r_ack_psn = qp->r_psn;
-
send_ack:
send_rc_ack(qp);
+ goto done;
+unlock:
+ spin_unlock_irqrestore(&qp->s_lock, flags);
done:
return;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff