gve: Add Gvnic stats AQ command and ethtool show/set-priv-flags.

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This adds functionality to report driver stats to Hypervisor.
(Users may want to turn this feature off as a matter of privacy
so a "report-stats" flag is added as an ethtool priv option.
It is also disabled by default.)
The hypervisor would trigger a stats report in case "too many"
packets dropped; the stats would be useful in debugging stuck
queues.
A "stats_report_trigger_cnt" stat is added to count the number of times
the hypervisor attempts to trigger stats report.

A timer is also added so that when report-stats is enabled, stat are
updated once every 20 seconds.

Reviewed-by: Yangchun Fu <yangchun@google.com>
Signed-off-by: Kuo Zhao <kuozhao@google.com>
Signed-off-by: David Awogbemila <awogbemila@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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This commit is contained in:

Kuo Zhao 2020-09-11 10:38:47 -07:00 • committed by David S. Miller

parent 0d5775d34d

commit 24aeb56f2d

6 changed files with 369 additions and 32 deletions

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71

drivers/net/ethernet/google/gve/gve.h

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20

drivers/net/ethernet/google/gve/gve_adminq.c

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38

drivers/net/ethernet/google/gve/gve_adminq.h

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113

drivers/net/ethernet/google/gve/gve_ethtool.c

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158

drivers/net/ethernet/google/gve/gve_main.c

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1

drivers/net/ethernet/google/gve/gve_register.h

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