Signed-off-by: Bryan O'Sullivan <[email protected]>
diff -r 4eabd5fc05bb -r 36447eb1f256 drivers/infiniband/hw/ipath/ipath_verbs.c
--- a/drivers/infiniband/hw/ipath/ipath_verbs.c Mon Apr 24 14:21:04 2006 -0700
+++ b/drivers/infiniband/hw/ipath/ipath_verbs.c Mon Apr 24 14:21:04 2006 -0700
@@ -449,7 +449,6 @@ static void ipath_ib_timer(void *arg)
{
struct ipath_ibdev *dev = (struct ipath_ibdev *) arg;
struct ipath_qp *resend = NULL;
- struct ipath_qp *rnr = NULL;
struct list_head *last;
struct ipath_qp *qp;
unsigned long flags;
@@ -465,32 +464,18 @@ static void ipath_ib_timer(void *arg)
last = &dev->pending[dev->pending_index];
while (!list_empty(last)) {
qp = list_entry(last->next, struct ipath_qp, timerwait);
- if (last->next == LIST_POISON1 ||
- last->next != &qp->timerwait ||
- qp->timerwait.prev != last) {
- INIT_LIST_HEAD(last);
- } else {
- list_del(&qp->timerwait);
- qp->timerwait.prev = (struct list_head *) resend;
- resend = qp;
- atomic_inc(&qp->refcount);
- }
+ list_del(&qp->timerwait);
+ qp->timer_next = resend;
+ resend = qp;
+ atomic_inc(&qp->refcount);
}
last = &dev->rnrwait;
if (!list_empty(last)) {
qp = list_entry(last->next, struct ipath_qp, timerwait);
if (--qp->s_rnr_timeout == 0) {
do {
- if (last->next == LIST_POISON1 ||
- last->next != &qp->timerwait ||
- qp->timerwait.prev != last) {
- INIT_LIST_HEAD(last);
- break;
- }
list_del(&qp->timerwait);
- qp->timerwait.prev =
- (struct list_head *) rnr;
- rnr = qp;
+ tasklet_hi_schedule(&qp->s_task);
if (list_empty(last))
break;
qp = list_entry(last->next, struct ipath_qp,
@@ -530,8 +515,7 @@ static void ipath_ib_timer(void *arg)
spin_unlock_irqrestore(&dev->pending_lock, flags);
/* XXX What if timer fires again while this is running? */
- for (qp = resend; qp != NULL;
- qp = (struct ipath_qp *) qp->timerwait.prev) {
+ for (qp = resend; qp != NULL; qp = qp->timer_next) {
struct ib_wc wc;
spin_lock_irqsave(&qp->s_lock, flags);
@@ -545,9 +529,6 @@ static void ipath_ib_timer(void *arg)
if (atomic_dec_and_test(&qp->refcount))
wake_up(&qp->wait);
}
- for (qp = rnr; qp != NULL;
- qp = (struct ipath_qp *) qp->timerwait.prev)
- tasklet_hi_schedule(&qp->s_task);
}
/**
@@ -556,9 +537,9 @@ static void ipath_ib_timer(void *arg)
*
* This is called from ipath_intr() at interrupt level when a PIO buffer is
* available after ipath_verbs_send() returned an error that no buffers were
- * available. Return 0 if we consumed all the PIO buffers and we still have
+ * available. Return 1 if we consumed all the PIO buffers and we still have
* QPs waiting for buffers (for now, just do a tasklet_hi_schedule and
- * return one).
+ * return zero).
*/
static int ipath_ib_piobufavail(void *arg)
{
@@ -579,7 +560,7 @@ static int ipath_ib_piobufavail(void *ar
spin_unlock_irqrestore(&dev->pending_lock, flags);
bail:
- return 1;
+ return 0;
}
static int ipath_query_device(struct ib_device *ibdev,
@@ -1159,7 +1140,7 @@ static ssize_t show_stats(struct class_d
len = sprintf(buf,
"RC resends %d\n"
- "RC QACKs %d\n"
+ "RC no QACK %d\n"
"RC ACKs %d\n"
"RC SEQ NAKs %d\n"
"RC RDMA seq %d\n"
diff -r 4eabd5fc05bb -r 36447eb1f256 drivers/infiniband/hw/ipath/ipath_verbs.h
--- a/drivers/infiniband/hw/ipath/ipath_verbs.h Mon Apr 24 14:21:04 2006 -0700
+++ b/drivers/infiniband/hw/ipath/ipath_verbs.h Mon Apr 24 14:21:04 2006 -0700
@@ -282,7 +282,8 @@ struct ipath_srq {
*/
struct ipath_qp {
struct ib_qp ibqp;
- struct ipath_qp *next; /* link list for QPN hash table */
+ struct ipath_qp *next; /* link list for QPN hash table */
+ struct ipath_qp *timer_next; /* link list for ipath_ib_timer() */
struct list_head piowait; /* link for wait PIO buf */
struct list_head timerwait; /* link for waiting for timeouts */
struct ib_ah_attr remote_ah_attr;
-
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