net-next: bnxt_en failing to load

net-next: bnxt_en failing to load

[Breno Leitao]

Hello,

I am testing net-next, and my 50Gb Ethernet is failing to work, looking
deep I found that bnxt_en module is failing to load. This is happening
for a while (~week) now. Is this a known problem?

This is the problem I see:

	bnxt_en 0000:02:00.0 (unnamed net_device) (uninitialized): Able to reserve only 0 out of 9 requested RX rings
	bnxt_en 0000:02:00.0 (unnamed net_device) (uninitialized): Unable to reserve tx rings
	bnxt_en 0000:02:00.0 (unnamed net_device) (uninitialized): 2nd rings reservation failed.
	bnxt_en 0000:02:00.0 (unnamed net_device) (uninitialized): Not enough rings available.
	bnxt_en 0000:02:00.0: probe with driver bnxt_en failed with error -12

This is the device I am testing with: 

	# lspci -v -s 02:00.0
	02:00.0 Ethernet controller: Broadcom Inc. and subsidiaries BCM57452 NetXtreme-E 10Gb/25Gb/40Gb/50Gb Ethernet (rev 01)
	Subsystem: Broadcom Inc. and subsidiaries Device 4520
	Flags: fast devsel, IRQ 16
	Memory at 38003fe00000 (64-bit, prefetchable) [size=64K]
	Memory at 38003fd00000 (64-bit, prefetchable) [size=1M]
	Memory at 38003fe10000 (64-bit, prefetchable) [size=8K]
	Expansion ROM at aad00000 [disabled] [size=512K]
	Capabilities: [48] Power Management version 3
	Capabilities: [50] Vital Product Data
	Capabilities: [58] MSI: Enable- Count=1/8 Maskable- 64bit+
	Capabilities: [a0] MSI-X: Enable- Count=32 Masked-
	Capabilities: [ac] Express Endpoint, MSI 00
	Capabilities: [100] Advanced Error Reporting
	Capabilities: [13c] Device Serial Number b0-26-28-ff-fe-a5-36-50
	Capabilities: [150] Power Budgeting <?>
	Capabilities: [160] Virtual Channel
	Capabilities: [180] Vendor Specific Information: ID=0000 Rev=0 Len=020 <?>
	Capabilities: [1b0] Latency Tolerance Reporting
	Capabilities: [1b8] Alternative Routing-ID Interpretation (ARI)
	Capabilities: [240] L1 PM Substates
	Capabilities: [300] Secondary PCI Express
	
If this is not a known problem, I can try to bissect if this is useful.

Thanks
Breno

Re: net-next: bnxt_en failing to load

[Michael Chan]

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On Fri, May 3, 2024 at 2:01 AM Breno Leitao <leitao@debian.org> wrote:
>
> Hello,
>
> I am testing net-next, and my 50Gb Ethernet is failing to work, looking
> deep I found that bnxt_en module is failing to load. This is happening
> for a while (~week) now. Is this a known problem?

This patch posted yesterday should fix it:

https://lore.kernel.org/netdev/20240502203757.3761827-1-dw@davidwei.uk/

Thanks.

>
> This is the problem I see:
>
>         bnxt_en 0000:02:00.0 (unnamed net_device) (uninitialized): Able to reserve only 0 out of 9 requested RX rings
>         bnxt_en 0000:02:00.0 (unnamed net_device) (uninitialized): Unable to reserve tx rings
>         bnxt_en 0000:02:00.0 (unnamed net_device) (uninitialized): 2nd rings reservation failed.
>         bnxt_en 0000:02:00.0 (unnamed net_device) (uninitialized): Not enough rings available.
>         bnxt_en 0000:02:00.0: probe with driver bnxt_en failed with error -12
>

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