Useful to identify which network queue is associated with
which vmbus channel.
Signed-off-by: Stephen Hemminger <sthemmin@xxxxxxxxxxxxx>
---
Documentation/ABI/stable/sysfs-bus-vmbus | 14 ++++++++++++++
drivers/hv/vmbus_drv.c | 17 +++++++++++++++++
2 files changed, 31 insertions(+)
diff --git a/Documentation/ABI/stable/sysfs-bus-vmbus b/Documentation/ABI/stable/sysfs-bus-vmbus
index b7174a5616d6..e46be65d0e1d 100644
--- a/Documentation/ABI/stable/sysfs-bus-vmbus
+++ b/Documentation/ABI/stable/sysfs-bus-vmbus
@@ -118,3 +118,17 @@ KernelVersion: 4.14
Contact: Stephen Hemminger <sthemmin@xxxxxxxxxxxxx>
Description: Number of times we have taken an interrupt (incoming)
Users: Debugging tools
+
+What: /sys/bus/vmbus/devices/vmbus_*/channels/NN/subchannel_id
+Date: January. 2018
+KernelVersion: 4.16
+Contact: Stephen Hemminger <sthemmin@xxxxxxxxxxxxx>
+Description: Subchannel ID associated with VMBUS channel
+Users: Debugging tools and userspace drivers
+
+What: /sys/bus/vmbus/devices/vmbus_*/channels/NN/monitor_id
+Date: January. 2018
+KernelVersion: 4.16
+Contact: Stephen Hemminger <sthemmin@xxxxxxxxxxxxx>
+Description: Monitor bit associated with channel
+Users: Debugging tools and userspace drivers
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 74e256db7d57..91cba71c0113 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -1255,6 +1255,21 @@ static ssize_t channel_events_show(const struct vmbus_channel *channel, char *bu
}
static VMBUS_CHAN_ATTR(events, S_IRUGO, channel_events_show, NULL);
+static ssize_t subchannel_monitor_id_show(const struct vmbus_channel *channel,
+ char *buf)
+{
+ return sprintf(buf, "%u\n", channel->offermsg.monitorid);
+}
+static VMBUS_CHAN_ATTR(monitor_id, S_IRUGO, subchannel_monitor_id_show, NULL);
+
+static ssize_t subchannel_id_show(const struct vmbus_channel *channel,
+ char *buf)
+{
+ return sprintf(buf, "%u\n",
+ channel->offermsg.offer.sub_channel_index);
+}
+static VMBUS_CHAN_ATTR_RO(subchannel_id);
+
static struct attribute *vmbus_chan_attrs[] = {
&chan_attr_out_mask.attr,
&chan_attr_in_mask.attr,
@@ -1265,6 +1280,8 @@ static struct attribute *vmbus_chan_attrs[] = {
&chan_attr_latency.attr,
&chan_attr_interrupts.attr,
&chan_attr_events.attr,
+ &chan_attr_monitor_id.attr,
+ &chan_attr_subchannel_id.attr,
NULL
};
--
2.15.1
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