linux.git/drivers/net/ethernet/google, branch v5.10

gve: Replace zero-length array with flexible-array member

2020-10-30T21:57:41+00:00

There is a regular need in the kernel to provide a way to declare having a
dynamically sized set of trailing elements in a structure.  Kernel code
should always use “flexible array members”[1] for these cases.  The
older style of one-element or zero-length arrays should no longer be
used[2].

Refactor the code according to the use of a flexible-array member in
struct gve_stats_report, instead of a zero-length array, and use the
struct_size() helper to calculate the size for the resource allocation.

[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://www.kernel.org/doc/html/v5.9/process/deprecated.html#zero-length-and-one-element-arrays

Signed-off-by: Gustavo A. R. Silva

gve: Enable Link Speed Reporting in the driver.

2020-09-11T21:31:54+00:00

This change allows the driver to report the device link speed
when the ethtool command:
	ethtool 
is run.
Getting the link speed is done via a new admin queue command:
ReportLinkSpeed.

Reviewed-by: Yangchun Fu 
Signed-off-by: David Awogbemila 
Signed-off-by: David S. Miller

gve: Use link status register to report link status

2020-09-11T21:31:54+00:00

This makes the driver better aware of the connectivity status of the
device. Based on the device's status register, the driver can call
netif_carrier_{on,off}.

Reviewed-by: Yangchun Fu 
Signed-off-by: Patricio Noyola 
Signed-off-by: David Awogbemila 
Signed-off-by: David S. Miller

gve: Batch AQ commands for creating and destroying queues.

2020-09-11T21:31:54+00:00

Adds support for batching AQ commands and uses it for creating and
destroying queues.

Reviewed-by: Yangchun Fu 
Signed-off-by: Sagi Shahar 
Signed-off-by: David Awogbemila 
Signed-off-by: David S. Miller

gve: NIC stats for report-stats and for ethtool

2020-09-11T21:31:54+00:00

This adds per queue NIC stats to ethtool stats and to report-stats.
These stats are always exposed to guest whether or not the
report-stats flag is turned on.

Signed-off-by: David Awogbemila 
Signed-off-by: David S. Miller

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

2020-09-11T21:31:54+00:00

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 
Signed-off-by: Kuo Zhao 
Signed-off-by: David Awogbemila 
Signed-off-by: David S. Miller

gve: Use dev_info/err instead of netif_info/err.

2020-09-11T21:31:54+00:00

Update the driver to use dev_info/err instead of netif_info/err.

Reviewed-by: Yangchun Fu 
Signed-off-by: Catherine Sullivan 
Signed-off-by: David Awogbemila 
Signed-off-by: David S. Miller

gve: Add stats for gve.

2020-09-11T21:31:53+00:00

Sample output of "ethtool -S " with 1 RX queue and 1 TX
queue:
NIC statistics:
     rx_packets: 1039
     tx_packets: 37
     rx_bytes: 822071
     tx_bytes: 4100
     rx_dropped: 0
     tx_dropped: 0
     tx_timeouts: 0
     rx_skb_alloc_fail: 0
     rx_buf_alloc_fail: 0
     rx_desc_err_dropped_pkt: 0
     interface_up_cnt: 1
     interface_down_cnt: 0
     reset_cnt: 0
     page_alloc_fail: 0
     dma_mapping_error: 0
     rx_posted_desc[0]: 1365
     rx_completed_desc[0]: 341
     rx_bytes[0]: 215094
     rx_dropped_pkt[0]: 0
     rx_copybreak_pkt[0]: 3
     rx_copied_pkt[0]: 3
     tx_posted_desc[0]: 6
     tx_completed_desc[0]: 6
     tx_bytes[0]: 420
     tx_wake[0]: 0
     tx_stop[0]: 0
     tx_event_counter[0]: 6
     adminq_prod_cnt: 34
     adminq_cmd_fail: 0
     adminq_timeouts: 0
     adminq_describe_device_cnt: 1
     adminq_cfg_device_resources_cnt: 1
     adminq_register_page_list_cnt: 16
     adminq_unregister_page_list_cnt: 0
     adminq_create_tx_queue_cnt: 8
     adminq_create_rx_queue_cnt: 8
     adminq_destroy_tx_queue_cnt: 0
     adminq_destroy_rx_queue_cnt: 0
     adminq_dcfg_device_resources_cnt: 0
     adminq_set_driver_parameter_cnt: 0

Reviewed-by: Yangchun Fu 
Signed-off-by: Kuo Zhao 
Signed-off-by: David Awogbemila 
Signed-off-by: David S. Miller

gve: Get and set Rx copybreak via ethtool

2020-09-11T21:31:53+00:00

This adds support for getting and setting the RX copybreak
value via ethtool.

Reviewed-by: Yangchun Fu 
Signed-off-by: Kuo Zhao 
Signed-off-by: David Awogbemila 
Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2020-01-09T20:13:43+00:00

The ungrafting from PRIO bug fixes in net, when merged into net-next,
merge cleanly but create a build failure.  The resolution used here is
from Petr Machata.

Signed-off-by: David S. Miller