vmbus: add monitor_id and subchannel_id to sysfs per channel
Useful to identify which network queue is associated with which vmbus channel. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -118,3 +118,17 @@ KernelVersion: 4.14
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Contact: Stephen Hemminger <sthemmin@microsoft.com>
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Description: Number of times we have taken an interrupt (incoming)
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Users: Debugging tools
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What: /sys/bus/vmbus/devices/vmbus_*/channels/NN/subchannel_id
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Date: January. 2018
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KernelVersion: 4.16
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Contact: Stephen Hemminger <sthemmin@microsoft.com>
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Description: Subchannel ID associated with VMBUS channel
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Users: Debugging tools and userspace drivers
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What: /sys/bus/vmbus/devices/vmbus_*/channels/NN/monitor_id
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Date: January. 2018
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KernelVersion: 4.16
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Contact: Stephen Hemminger <sthemmin@microsoft.com>
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Description: Monitor bit associated with channel
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Users: Debugging tools and userspace drivers
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@ -1254,6 +1254,21 @@ static ssize_t channel_events_show(const struct vmbus_channel *channel, char *bu
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}
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static VMBUS_CHAN_ATTR(events, S_IRUGO, channel_events_show, NULL);
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static ssize_t subchannel_monitor_id_show(const struct vmbus_channel *channel,
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char *buf)
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{
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return sprintf(buf, "%u\n", channel->offermsg.monitorid);
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}
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static VMBUS_CHAN_ATTR(monitor_id, S_IRUGO, subchannel_monitor_id_show, NULL);
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static ssize_t subchannel_id_show(const struct vmbus_channel *channel,
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char *buf)
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{
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return sprintf(buf, "%u\n",
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channel->offermsg.offer.sub_channel_index);
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}
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static VMBUS_CHAN_ATTR_RO(subchannel_id);
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static struct attribute *vmbus_chan_attrs[] = {
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&chan_attr_out_mask.attr,
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&chan_attr_in_mask.attr,
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@ -1264,6 +1279,8 @@ static struct attribute *vmbus_chan_attrs[] = {
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&chan_attr_latency.attr,
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&chan_attr_interrupts.attr,
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&chan_attr_events.attr,
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&chan_attr_monitor_id.attr,
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&chan_attr_subchannel_id.attr,
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NULL
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};
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