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| author |   Luca Boccassi <luca.boccassi@gmail.com> | 2018-11-01 11:59:50 +0000 |
|---|---|---|
| committer | Luca Boccassi <luca.boccassi@gmail.com> | 2018-11-01 12:00:19 +0000 |
| commit | 8d01b9cd70a67cdafd5b965a70420c3bd7fb3f82 (patch) | |
| tree | 208e3bc33c220854d89d010e3abf720a2e62e546 /drivers/bus/vmbus/vmbus_channel.c | |
| parent | b63264c8342e6a1b6971c79550d2af2024b6a4de (diff) | |
New upstream version 18.11-rc1upstream/18.11-rc1
Change-Id: Iaa71986dd6332e878d8f4bf493101b2bbc6313bb
Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>
Diffstat (limited to 'drivers/bus/vmbus/vmbus_channel.c')
| -rw-r--r-- | drivers/bus/vmbus/vmbus_channel.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/bus/vmbus/vmbus_channel.c b/drivers/bus/vmbus/vmbus_channel.c index cc5f3e83..bd14c066 100644 --- a/drivers/bus/vmbus/vmbus_channel.c +++ b/drivers/bus/vmbus/vmbus_channel.c @@ -60,6 +60,32 @@ vmbus_set_event(const struct rte_vmbus_device *dev, } /* + * Set the wait between when hypervisor examines the trigger. + */ +void +rte_vmbus_set_latency(const struct rte_vmbus_device *dev, + const struct vmbus_channel *chan, + uint32_t latency) +{ + uint32_t trig_idx = chan->monitor_id / VMBUS_MONTRIG_LEN; + uint32_t trig_offs = chan->monitor_id % VMBUS_MONTRIG_LEN; + + if (latency >= UINT16_MAX * 100) { + VMBUS_LOG(ERR, "invalid latency value %u", latency); + return; + } + + if (trig_idx >= VMBUS_MONTRIGS_MAX) { + VMBUS_LOG(ERR, "invalid monitor trigger %u", + trig_idx); + return; + } + + /* Host value is expressed in 100 nanosecond units */ + dev->monitor_page->lat[trig_idx][trig_offs] = latency / 100; +} + +/* * Notify host that there are data pending on our TX bufring. * * Since this in userspace, rely on the monitor page. |