linux-kernel - Re: [Intel-wired-lan] [PATCH] ice: wait for EMP reset after firmware flash

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <bc534155-e5bc-b9d2-24b4-e7559a7c5fb5@molgen.mpg.de>
Date:   Tue, 12 Apr 2022 15:28:14 +0200
From:   Paul Menzel <pmenzel@...gen.mpg.de>
To:     Petr Oros <poros@...hat.com>
Cc:     Jacob Keller <jacob.e.keller@...el.com>, ivecera@...hat.com,
        intel-wired-lan@...ts.osuosl.org, linux-kernel@...r.kernel.org,
        kuba@...nel.org, pabeni@...hat.com, davem@...emloft.net,
        netdev@...r.kernel.org, regressions@...ts.linux.dev
Subject: Re: [Intel-wired-lan] [PATCH] ice: wait for EMP reset after firmware
 flash

[Cc: +Jakob, +regressions@...ts.linux.dev]


Dear Petr,


Thank you for your patch for the regression.

#regzbot ^introduced 399e27dbbd9e94


Am 12.04.22 um 12:27 schrieb Petr Oros:

Please mention the time in the commit message summary:

ice: Wait 5 s for EMP reset after firmware flash

> We need to wait for EMP reset after firmware flash.
> Code was extracted from OOT driver and without this wait fw_activate let

Which OOT driver exactly?

> card in inconsistent state recoverable only by second flash/activate

Please reflow for 75 characters per line, and add a dot/period to the 
end of sentences.

> Reproducer:
> [root@...t ~]# devlink dev flash pci/0000:ca:00.0 file E810_XXVDA4_FH_O_SEC_FW_1p6p1p9_NVM_3p10_PLDMoMCTP_0.11_8000AD7B.bin
> Preparing to flash
> [fw.mgmt] Erasing
> [fw.mgmt] Erasing done
> [fw.mgmt] Flashing 100%
> [fw.mgmt] Flashing done 100%
> [fw.undi] Erasing
> [fw.undi] Erasing done
> [fw.undi] Flashing 100%
> [fw.undi] Flashing done 100%
> [fw.netlist] Erasing
> [fw.netlist] Erasing done
> [fw.netlist] Flashing 100%
> [fw.netlist] Flashing done 100%
> Activate new firmware by devlink reload
> [root@...t ~]# devlink dev reload pci/0000:ca:00.0 action fw_activate
> reload_actions_performed:
>      fw_activate
> [root@...t ~]# ip link show ens7f0
> 71: ens7f0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000
>      link/ether b4:96:91:dc:72:e0 brd ff:ff:ff:ff:ff:ff
>      altname enp202s0f0
> 
> dmesg after flash:
> [   55.120788] ice: Copyright (c) 2018, Intel Corporation.
> [   55.274734] ice 0000:ca:00.0: Get PHY capabilities failed status = -5, continuing anyway
> [   55.569797] ice 0000:ca:00.0: The DDP package was successfully loaded: ICE OS Default Package version 1.3.28.0
> [   55.603629] ice 0000:ca:00.0: Get PHY capability failed.
> [   55.608951] ice 0000:ca:00.0: ice_init_nvm_phy_type failed: -5
> [   55.647348] ice 0000:ca:00.0: PTP init successful
> [   55.675536] ice 0000:ca:00.0: DCB is enabled in the hardware, max number of TCs supported on this port are 8
> [   55.685365] ice 0000:ca:00.0: FW LLDP is disabled, DCBx/LLDP in SW mode.
> [   55.692179] ice 0000:ca:00.0: Commit DCB Configuration to the hardware
> [   55.701382] ice 0000:ca:00.0: 126.024 Gb/s available PCIe bandwidth, limited by 16.0 GT/s PCIe x8 link at 0000:c9:02.0 (capable of 252.048 Gb/s with 16.0 GT/s PCIe x16 link)

So, what is the error? `Get PHY capabilities failed status = -5`?

What firmware version did the network card have before and after the update?

> Reboot don't help, only second flash/activate with OOT or patched driver put card back in consistent state

s/don't/doesn’t/

> After patch:
> [root@...t ~]# devlink dev flash pci/0000:ca:00.0 file E810_XXVDA4_FH_O_SEC_FW_1p6p1p9_NVM_3p10_PLDMoMCTP_0.11_8000AD7B.bin
> Preparing to flash
> [fw.mgmt] Erasing
> [fw.mgmt] Erasing done
> [fw.mgmt] Flashing 100%
> [fw.mgmt] Flashing done 100%
> [fw.undi] Erasing
> [fw.undi] Erasing done
> [fw.undi] Flashing 100%
> [fw.undi] Flashing done 100%
> [fw.netlist] Erasing
> [fw.netlist] Erasing done
> [fw.netlist] Flashing 100%
> [fw.netlist] Flashing done 100%
> Activate new firmware by devlink reload
> [root@...t ~]# devlink dev reload pci/0000:ca:00.0 action fw_activate
> reload_actions_performed:
>      fw_activate
> [root@...t ~]# ip link show ens7f0
> 19: ens7f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000
>      link/ether b4:96:91:dc:72:e0 brd ff:ff:ff:ff:ff:ff
>      altname enp202s0f0

Did you try anything less than five seconds? i40e uses one second, cf. 
commit 9b13bd53134c (i40e: Increase delay to 1 s after global EMP reset).

> Fixes: 399e27dbbd9e94 ("ice: support immediate firmware activation via devlink reload")
> Signed-off-by: Petr Oros <poros@...hat.com>
> ---
>   drivers/net/ethernet/intel/ice/ice_main.c | 3 +++
>   1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
> index d768925785ca79..90ea2203cdc763 100644
> --- a/drivers/net/ethernet/intel/ice/ice_main.c
> +++ b/drivers/net/ethernet/intel/ice/ice_main.c
> @@ -6931,12 +6931,15 @@ static void ice_rebuild(struct ice_pf *pf, enum ice_reset_req reset_type)
>   
>   	dev_dbg(dev, "rebuilding PF after reset_type=%d\n", reset_type);
>   
> +#define ICE_EMP_RESET_SLEEP 5000

Please append the unit to the macro name.

>   	if (reset_type == ICE_RESET_EMPR) {
>   		/* If an EMP reset has occurred, any previously pending flash
>   		 * update will have completed. We no longer know whether or
>   		 * not the NVM update EMP reset is restricted.
>   		 */
>   		pf->fw_emp_reset_disabled = false;
> +
> +		msleep(ICE_EMP_RESET_SLEEP);
>   	}
>   
>   	err = ice_init_all_ctrlq(hw);


Kind regards,

Paul