Re: bnx2x: ppc64le: Unable to set message level greater than 0x7fff

On Tue, 15 Mar 2022 22:58:57 +0100 Paul Menzel wrote:

On the POWER8 server IBM S822LC (ppc64le), I am unable to set the 
message level for the network device to 0x0100000 but it fails.

     $ sudo ethtool -s enP1p1s0f2 msglvl 0x0100000
     netlink error: cannot modify bits past kernel bitset size (offset 56)
     netlink error: Invalid argument

Below is more information. 0x7fff is the largest value I am able to set.

$ sudo ethtool -i enP1p1s0f2
driver: bnx2x
version: 5.17.0-rc7+
firmware-version: bc 7.10.4
expansion-rom-version:
bus-info: 0001:01:00.2
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: yes
$ sudo ethtool -s enP1p1s0f2 msglvl 0x7fff
$ sudo ethtool enP1p1s0f2
Settings for enP1p1s0f2:
         Supported ports: [ TP ]
         Supported link modes:   10baseT/Half 10baseT/Full
                                 100baseT/Half 100baseT/Full
                                 1000baseT/Full
         Supported pause frame use: Symmetric Receive-only
         Supports auto-negotiation: Yes
         Supported FEC modes: Not reported
         Advertised link modes:  10baseT/Half 10baseT/Full
                                 100baseT/Half 100baseT/Full
                                 1000baseT/Full
         Advertised pause frame use: Symmetric Receive-only
         Advertised auto-negotiation: Yes
         Advertised FEC modes: Not reported
         Speed: Unknown!
         Duplex: Unknown! (255)
         Auto-negotiation: on
         Port: Twisted Pair
         PHYAD: 17
         Transceiver: internal
         MDI-X: Unknown
         Supports Wake-on: g
         Wake-on: d
         Current message level: 0x00007fff (32767)
                                drv probe link timer ifdown ifup rx_err 
tx_err tx_queued intr tx_done rx_status pktdata hw wol
         Link detected: no
$ sudo ethtool -s enP1p1s0f2 msglvl 0x8000
netlink error: cannot modify bits past kernel bitset size (offset 56)
netlink error: Invalid argument

The new ethtool-over-netlink API limits the msg levels to the ones
officially defined by the kernel (NETIF_MSG_CLASS_COUNT).

CC: Michal