diff options
| author |   Mike Marciniszyn <mike.marciniszyn@intel.com> | 2016-02-04 10:59:01 -0800 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2016-03-10 20:38:02 -0500 |
| commit | 9171bfdd363304713a5a82ae03da6ec55a0cae39 (patch) | |
| tree | 6614f28362970f2f1000be4f66b9c16bcf89fd90 /drivers/staging/rdma/hfi1/rc.c | |
| parent | staging/rdma/hfi1: Removing unused struct hfi1_verbs_counters (diff) | |
| download | linux-dev-9171bfdd363304713a5a82ae03da6ec55a0cae39.tar.xz linux-dev-9171bfdd363304713a5a82ae03da6ec55a0cae39.zip | |
staging/rdma/hfi1: centralize timer routines into rc
Centralize disparate timer maintenance.
This allow for central control and changes to the RC
timer handling including future optimizations.
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>
Diffstat (limited to 'drivers/staging/rdma/hfi1/rc.c')
| -rw-r--r-- | drivers/staging/rdma/hfi1/rc.c | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/drivers/staging/rdma/hfi1/rc.c b/drivers/staging/rdma/hfi1/rc.c index 371edc3dd4f6..350faaa45db4 100644 --- a/drivers/staging/rdma/hfi1/rc.c +++ b/drivers/staging/rdma/hfi1/rc.c @@ -62,6 +62,113 @@ static void rc_timeout(unsigned long arg); +/** + * hfi1_add_retry_timer - add/start a retry timer + * @qp - the QP + * + * add a retry timer on the QP + */ +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); +} + +/** + * hfi1_add_rnr_timer - add/start an rnr timer + * @qp - the QP + * @to - timeout in usecs + * + * add an rnr timer on the QP + */ +static inline void hfi1_add_rnr_timer(struct rvt_qp *qp, u32 to) +{ + 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); +} + +/** + * hfi1_mod_retry_timer - mod a retry timer + * @qp - the QP + * + * Modify a potentially already running retry + * timer + */ +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); +} + +/** + * hfi1_stop_retry_timer - stop a retry timer + * @qp - the QP + * + * stop a retry timer and return if the timer + * had been pending. + */ +static inline int hfi1_stop_retry_timer(struct rvt_qp *qp) +{ + int rval = 0; + + /* Remove QP from retry */ + if (qp->s_flags & RVT_S_TIMER) { + qp->s_flags &= ~RVT_S_TIMER; + rval = del_timer(&qp->s_timer); + } + return rval; +} + +/** + * hfi1_stop_rc_timers - stop all timers + * @qp - the QP + * + * stop any pending timers + */ +static inline void hfi1_stop_rc_timers(struct rvt_qp *qp) +{ + /* 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); + } +} + +/** + * hfi1_stop_rnr_timer - stop an rnr timer + * @qp - the QP + * + * stop an rnr timer and return if the timer + * had been pending. + */ +static inline int hfi1_stop_rnr_timer(struct rvt_qp *qp) +{ + int rval = 0; + + /* 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); + } + return rval; +} + +/** + * hfi1_del_timers_sync - wait for any timeout routines to exit + * @qp - the QP + */ +static inline void hfi1_del_timers_sync(struct rvt_qp *qp) +{ + del_timer_sync(&qp->s_timer); +} + static u32 restart_sge(struct rvt_sge_state *ss, struct rvt_swqe *wqe, u32 psn, u32 pmtu) { |