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Date:   Wed, 3 Apr 2019 17:00:40 +0200
From:   Ian Kumlien <ian.kumlien@...il.com>
To:     Linux Kernel Network Developers <netdev@...r.kernel.org>,
        aelior@...vell.com, skalluru@...vell.com
Subject: bnx2x - odd behaviour

Hi,

We just had this happen on 5.0.2

It looks like the interface went down, ended up in a broken state and
a ip li set down/up dev enp2s0f0 made it work again

It looks really weird and I haven't really seen anything like it,
anyone with a clue?

dmesg:
....
[1310361.808694] bnx2x 0000:02:00.0 enp2s0f0: NIC Link is Down
[1310361.824554] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
[1310362.872678] bond0: link status definitely down for interface
enp2s0f0, disabling it
[1310362.880691] device enp2s0f0 left promiscuous mode
[1310363.188592] bnx2x 0000:02:00.0 enp2s0f0: NIC Link is Up, 10000
Mbps full duplex, Flow control: ON - transmit
[1310363.200653] bond0: link status up for interface enp2s0f0,
enabling it in 0 ms
[1310363.208192] bond0: link status definitely up for interface
enp2s0f0, 10000 Mbps full duplex
[1310363.216885] bond0: making interface enp2s0f0 the new active one
[1310363.223075] device enp2s0f0 entered promiscuous mode
[1310363.228613] bond0: first active interface up!
[1310364.048805] bnx2x:
[bnx2x_attn_int_deasserted3:4357(enp2s0f0)]LATCHED attention
0x04000000 (masked)
[1310364.058297] bnx2x: [bnx2x_attn_int_deasserted3:4361(enp2s0f0)]GRC
time-out 0x08004384
[1310365.072604] bnx2x: [bnx2x_hw_stats_update:869(enp2s0f0)]NIG timer max (1)
[1310366.096679] bnx2x: [bnx2x_hw_stats_update:869(enp2s0f0)]NIG timer max (2)
[1310366.103922] bnx2x:
[bnx2x_attn_int_deasserted3:4357(enp2s0f0)]LATCHED attention
0x04000000 (masked)
[1310366.113387] bnx2x: [bnx2x_attn_int_deasserted3:4361(enp2s0f0)]GRC
time-out 0x08004384
[1310367.120518] bnx2x: [bnx2x_hw_stats_update:869(enp2s0f0)]NIG timer max (3)
[1310368.144635] bnx2x: [bnx2x_hw_stats_update:869(enp2s0f0)]NIG timer max (4)
[1310369.168591] bnx2x: [bnx2x_hw_stats_update:869(enp2s0f0)]NIG timer max (5)
[1310371.216519] bnx2x: [bnx2x_hw_stats_update:869(enp2s0f0)]NIG timer max (6)
... it does go on ...
[1312156.028230] bnx2x: [bnx2x_hw_stats_update:869(enp2s0f0)]NIG timer
max (1520)
[1312157.052226] bnx2x: [bnx2x_hw_stats_update:869(enp2s0f0)]NIG timer
max (1521)
[1312157.059842] bnx2x:
[bnx2x_attn_int_deasserted3:4357(enp2s0f0)]LATCHED attention
0x04000000 (masked)
[1312157.069242] bnx2x: [bnx2x_attn_int_deasserted3:4361(enp2s0f0)]GRC
time-out 0x08004384
[1312158.076261] bnx2x:
[bnx2x_attn_int_deasserted3:4357(enp2s0f0)]LATCHED attention
0x04000000 (masked)
[1312158.085657] bnx2x: [bnx2x_attn_int_deasserted3:4361(enp2s0f0)]GRC
time-out 0x08004384
[1312159.100154] bnx2x: [bnx2x_hw_stats_update:869(enp2s0f0)]NIG timer
max (1522)
[1312160.124226] bnx2x: [bnx2x_hw_stats_update:869(enp2s0f0)]NIG timer
max (1523)
[1312161.148127] bnx2x: [bnx2x_hw_stats_update:869(enp2s0f0)]NIG timer
max (1524)
[1312162.172102] bnx2x: [bnx2x_hw_stats_update:869(enp2s0f0)]NIG timer
max (1525)
[1312163.196000] bnx2x: [bnx2x_hw_stats_update:869(enp2s0f0)]NIG timer
max (1526)
[1312163.203610] bnx2x:
[bnx2x_attn_int_deasserted3:4357(enp2s0f0)]LATCHED attention
0x04000000 (masked)
[1312163.213082] bnx2x: [bnx2x_attn_int_deasserted3:4361(enp2s0f0)]GRC
time-out 0x08004384
[1312164.220248] bnx2x: [bnx2x_hw_stats_update:869(enp2s0f0)]NIG timer
max (1527)
[1312165.244119] bnx2x:
[bnx2x_attn_int_deasserted3:4357(enp2s0f0)]LATCHED attention
0x04000000 (masked)
[1312165.253524] bnx2x: [bnx2x_attn_int_deasserted3:4361(enp2s0f0)]GRC
time-out 0x08004384
[1312166.268053] bnx2x: [bnx2x_hw_stats_update:869(enp2s0f0)]NIG timer
max (1528)
[1312167.292105] bnx2x: [bnx2x_hw_stats_update:869(enp2s0f0)]NIG timer
max (1529)
[1312168.316022] bnx2x: [bnx2x_hw_stats_update:869(enp2s0f0)]NIG timer
max (1530)
[1312169.340014] bnx2x: [bnx2x_hw_stats_update:869(enp2s0f0)]NIG timer
max (1531)
[1312169.347584] bnx2x:
[bnx2x_attn_int_deasserted3:4357(enp2s0f0)]LATCHED attention
0x04000000 (masked)
[1312169.357054] bnx2x: [bnx2x_attn_int_deasserted3:4361(enp2s0f0)]GRC
time-out 0x08004384

... trying to bing it down ...

[1312169.659992] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
[1312169.672041] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
[1312169.682084] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
[1312169.692159] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
[1312169.702026] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
[1312169.712081] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
[1312169.722097] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
[1312169.732073] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
[1312169.742079] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
[1312169.752066] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
[1312169.762017] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
[1312169.771958] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
[1312169.782085] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
.... on and on ...
[1312170.434045] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
[1312170.444012] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
[1312170.454024] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
[1312170.463879] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
[1312170.473950] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
[1312170.484107] bond0: link status down for active interface
enp2s0f0, disabling it in 1000 ms
[1312171.532119] bond0: link status definitely down for interface
enp2s0f0, disabling it

... bringing it up again ...

[1312171.540128] device enp2s0f0 left promiscuous mode
[1312189.213375] bnx2x 0000:02:00.0 enp2s0f0: using MSI-X  IRQs: sp 42
 fp[0] 44 ... fp[7] 51
[1312190.780919] bnx2x 0000:02:00.0 enp2s0f0: NIC Link is Up, 10000
Mbps full duplex, Flow control: ON - transmit
[1312190.787840] bond0: link status up for interface enp2s0f0,
enabling it in 0 ms
[1312190.798618] bond0: link status definitely up for interface
enp2s0f0, 10000 Mbps full duplex
[1312190.807307] bond0: making interface enp2s0f0 the new active one
[1312190.813560] device enp2s0f0 entered promiscuous mode
[1312190.820884] bond0: first active interface up!
---

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