[PATCH net-next v2 5/6] net/ncsi: Reset channel state in ncsi_start_dev()

[Justin.Lee1 at Dell.com]

> For your trace below can you share exactly which commands you were
> sending? Those messages aren't upstream so it's not 100% clear what's
> being sent.
> 
> Thanks!
> Sam
> 

It is sending via netlink directly. I have two packages (0 and 1) and each package has
two channels (0 and 1) on my system. If I convert it to command line, it would be
as below.

/home/root# ncsi_netlink -l 2 -m -a 0x01
Set cmd - ifindex 2, multi 1, mask 0x00000001

/home/root# ncsi_netlink -l 2 -m -b 0x03 -p 0
Set cmd - ifindex 2, package 0, channel -1, multi 1, mask 0x00000003

/home/root# ncsi_netlink -l 2 -m -b 0x00 -p 1
Set cmd - ifindex 2, package 1, channel -1, multi 1, mask 0x00000000

/home/root# ncsi_netlink
Usage: ncsi_netlink COMMAND [OPTION]...
Send messages to the NCSI driver via Netlink (0.4)

Mandatory arguments to long options are mandatory for short options too.
COMMAND:
  -i, --info                 Display info for packages and channels
  -s, --set                  Force the usage of a certain package/channel combination
  -x, --clear                Clear the above setting
  -a, --package-mask MASK    Set package selection mask
  -b, --channel-mask MASK    Set channel selection mask
  -o, --cmd DATA0 [DATA1]... Send NC-SI command
  -d, --discovery            Request to discover packages and channels
  -k, --lookup               Look up channel id or name
  -u, --status               Display status
  -h, --help                 Print this help text

OPTION:
  -l, --ifindex INDEX        Specify the interface index
  -p, --package PACKAGE      Package number
  -c, --channel CHANNEL      Channel number (aka. port number)
  -n, --channel NAME         Channel name (aka. ncsiX)
  -m, --multi-mode           Set multi-mode

Example: ncsi_netlink -l 2 --info


> > 
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: Multi-package enabled on ifindex 2, mask 0x00000001
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: ncsi_stop_channel_monitor() - pkg 0 ch 0
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: ncsi_dev_work()
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: ncsi_suspend_channel() - pkg 0 ch 0 state 0400
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: pkg 0 ch 0 set as preferred channel
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: Multi-channel enabled on ifindex 2, mask 0x00000003
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: ncsi_stop_channel_monitor() - pkg 0 ch 1
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: ncsi_dev_work()
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: ncsi_suspend_channel() - pkg 0 ch 1 state 0400
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: Package 1 set to all channels disabled
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: Multi-channel enabled on ifindex 2, mask 0x00000000
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: ncsi_choose_active_channel()
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: ncsi_choose_active_channel() - pkg 0
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: ncsi_choose_active_channel() - pass pkg whitelist
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: ncsi_choose_active_channel() - ch 0
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: ncsi_choose_active_channel() - pass ch whitelist
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: ncsi_choose_active_channel() - skip
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: ncsi_choose_active_channel() - ch 1
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: ncsi_choose_active_channel() - pass ch whitelist
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: ncsi_choose_active_channel() - skip
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: ncsi_choose_active_channel() - next pkg
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: ncsi_choose_active_channel() - pkg 1
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: No channel found to configure!
> > > > npcm7xx-emc f0825000.eth eth2: NCSI interface down
> > > > npcm7xx-emc f0825000.eth eth2: NCSI: ncsi_dev_work()
> > > > npcm7xx-emc f0825000.eth eth2: Wrong NCSI state 0x100 in workqueue
> > > > 
> > > > All masks are set correctly, but you can see the PS column is not right and channel doesn't
> > > > configure correctly.
> > > > 
> > > > /sys/kernel/debug/ncsi_protocol# cat ncsi_device_status
> > > > IFIDX IFNAME NAME   PID CID RX TX MP MC WP WC PC PS LS RU CR NQ HA
> > > > ===================================================================
> > > >   2   eth2   ncsi0  000 000 1  1  1  1  1  1  1  0  1  1  1  0  1
> > > >   2   eth2   ncsi1  000 001 1  0  1  1  1  1  0  0  1  1  1  0  1
> > > >   2   eth2   ncsi2  001 000 0  0  1  1  0  0  0  0  1  1  1  0  1
> > > >   2   eth2   ncsi3  001 001 0  0  1  1  0  0  0  0  1  1  1  0  1
> > > > ===================================================================
> > > > MP: Multi-mode Package     WP: Whitelist Package
> > > > MC: Multi-mode Channel     WC: Whitelist Channel
> > > > PC: Primary Channel
> > > > PS: Poll Status
> > > > LS: Link Status
> > > > RU: Running
> > > > CR: Carrier OK
> > > > NQ: Queue Stopped
> > > > HA: Hardware Arbitration
> > > > 
> > > > PS column is getting from (int)nc->monitor.enabled.
> 
>