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staging/rdma/hfi1: use new RNR timer

Browse source 
Use the new RNR timer for hfi1.

For qib, this timer doesn't exist, so exploit driver
callbacks to use the new timer as appropriate.

Reviewed-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Mike Marciniszyn 2016-02-04 10:59:36 -08:00 committed by Doug Ledford
parent 3c9d149bdc
commit 08279d5c94
5 changed files with 19 additions and 10 deletions
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1
drivers/infiniband/hw/qib/qib_qp.c
View file

@ -412,6 +412,7 @@ void stop_send_queue(struct rvt_qp *qp)
struct qib_qp_priv *priv = qp->priv;
cancel_work_sync(&priv->s_work);
del_timer_sync(&qp->s_timer);
}
void quiesce_qp(struct rvt_qp *qp)

1
drivers/infiniband/sw/rdmavt/qp.c
View file

@ -405,7 +405,6 @@ void rvt_reset_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp,
/* Stop the send queue and the retry timer */
rdi->driver_f.stop_send_queue(qp);
del_timer_sync(&qp->s_timer);
/* Wait for things to stop */
rdi->driver_f.quiesce_qp(qp);

3
drivers/staging/rdma/hfi1/qp.c
View file

@ -608,6 +608,7 @@ void *qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp,
return ERR_PTR(-ENOMEM);
}
setup_timer(&priv->s_rnr_timer, hfi1_rc_rnr_retry, (unsigned long)qp);
qp->s_timer.function = hfi1_rc_timeout;
return priv;
}
@ -647,6 +648,7 @@ unsigned free_all_qps(struct rvt_dev_info *rdi)
void flush_qp_waiters(struct rvt_qp *qp)
{
flush_iowait(qp);
hfi1_stop_rc_timers(qp);
}
void stop_send_queue(struct rvt_qp *qp)
@ -654,6 +656,7 @@ void stop_send_queue(struct rvt_qp *qp)
struct hfi1_qp_priv *priv = qp->priv;
cancel_work_sync(&priv->s_iowait.iowork);
hfi1_del_timers_sync(qp);
}
void quiesce_qp(struct rvt_qp *qp)

22
drivers/staging/rdma/hfi1/rc.c
View file

@ -60,8 +60,6 @@
/* cut down ridiculously long IB macro names */
#define OP(x) IB_OPCODE_RC_##x
static void rc_timeout(unsigned long arg);
/**
* hfi1_add_retry_timer - add/start a retry timer
* @qp - the QP
@ -71,7 +69,6 @@ static void rc_timeout(unsigned long arg);
static inline void hfi1_add_retry_timer(struct rvt_qp *qp)
{
qp->s_flags |= RVT_S_TIMER;
qp->s_timer.function = rc_timeout;
/* 4.096 usec. * (1 << qp->timeout) */
qp->s_timer.expires = jiffies + qp->timeout_jiffies;
add_timer(&qp->s_timer);
@ -86,10 +83,11 @@ static inline void hfi1_add_retry_timer(struct rvt_qp *qp)
*/
static inline void hfi1_add_rnr_timer(struct rvt_qp *qp, u32 to)
{
struct hfi1_qp_priv *priv = qp->priv;
qp->s_flags |= RVT_S_WAIT_RNR;
qp->s_timer.function = hfi1_rc_rnr_retry;
qp->s_timer.expires = jiffies + usecs_to_jiffies(to);
add_timer(&qp->s_timer);
add_timer(&priv->s_rnr_timer);
}
/**
@ -102,7 +100,6 @@ static inline void hfi1_add_rnr_timer(struct rvt_qp *qp, u32 to)
static inline void hfi1_mod_retry_timer(struct rvt_qp *qp)
{
qp->s_flags |= RVT_S_TIMER;
qp->s_timer.function = rc_timeout;
/* 4.096 usec. * (1 << qp->timeout) */
mod_timer(&qp->s_timer, jiffies + qp->timeout_jiffies);
}
@ -132,12 +129,15 @@ static inline int hfi1_stop_retry_timer(struct rvt_qp *qp)
*
* stop any pending timers
*/
static inline void hfi1_stop_rc_timers(struct rvt_qp *qp)
void hfi1_stop_rc_timers(struct rvt_qp *qp)
{
struct hfi1_qp_priv *priv = qp->priv;
/* Remove QP from all timers */
if (qp->s_flags & (RVT_S_TIMER | RVT_S_WAIT_RNR)) {
qp->s_flags &= ~(RVT_S_TIMER | RVT_S_WAIT_RNR);
del_timer(&qp->s_timer);
del_timer(&priv->s_rnr_timer);
}
}
@ -151,11 +151,12 @@ static inline void hfi1_stop_rc_timers(struct rvt_qp *qp)
static inline int hfi1_stop_rnr_timer(struct rvt_qp *qp)
{
int rval = 0;
struct hfi1_qp_priv *priv = qp->priv;
/* Remove QP from rnr timer */
if (qp->s_flags & RVT_S_WAIT_RNR) {
qp->s_flags &= ~RVT_S_WAIT_RNR;
rval = del_timer(&qp->s_timer);
rval = del_timer(&priv->s_rnr_timer);
}
return rval;
}
@ -166,7 +167,10 @@ static inline int hfi1_stop_rnr_timer(struct rvt_qp *qp)
*/
void hfi1_del_timers_sync(struct rvt_qp *qp)
{
struct hfi1_qp_priv *priv = qp->priv;
del_timer_sync(&qp->s_timer);
del_timer_sync(&priv->s_rnr_timer);
}
static u32 restart_sge(struct rvt_sge_state *ss, struct rvt_swqe *wqe,
@ -1015,7 +1019,7 @@ static void restart_rc(struct rvt_qp *qp, u32 psn, int wait)
/*
* This is called from s_timer for missing responses.
*/
static void rc_timeout(unsigned long arg)
void hfi1_rc_timeout(unsigned long arg)
{
struct rvt_qp *qp = (struct rvt_qp *)arg;
struct hfi1_ibport *ibp;

2
drivers/staging/rdma/hfi1/verbs.h
View file

@ -404,7 +404,9 @@ u8 ah_to_sc(struct ib_device *ibdev, struct ib_ah_attr *ah_attr);
struct ib_ah *hfi1_create_qp0_ah(struct hfi1_ibport *ibp, u16 dlid);
void hfi1_rc_rnr_retry(unsigned long arg);
void hfi1_rc_timeout(unsigned long arg);
void hfi1_del_timers_sync(struct rvt_qp *qp);
void hfi1_stop_rc_timers(struct rvt_qp *qp);
void hfi1_rc_send_complete(struct rvt_qp *qp, struct hfi1_ib_header *hdr);