• Thor Thayer's avatar
    net: stmmac: Set OWN bit for jumbo frames · 487e2e22
    Thor Thayer authored
    Ping with Jumbo packet does not reply and get a watchdog timeout
    
    [   46.059616] ------------[ cut here ]------------
    [   46.064268] NETDEV WATCHDOG: eth0 (socfpga-dwmac): transmit queue 0 timed out
    [   46.071471] WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:461 dev_watchdog+0x2cc/0x2d8
    [   46.079708] Modules linked in:
    [   46.082761] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.18.0-00115-gc262be665854-dirty #264
    [   46.091082] Hardware name: SoCFPGA Stratix 10 SoCDK (DT)
    [   46.096377] pstate: 20000005 (nzCv daif -PAN -UAO)
    [   46.101152] pc : dev_watchdog+0x2cc/0x2d8
    [   46.105149] lr : dev_watchdog+0x2cc/0x2d8
    [   46.109144] sp : ffff00000800bd80
    [   46.112447] x29: ffff00000800bd80 x28: ffff80007a9b4940
    [   46.117744] x27: 00000000ffffffff x26: ffff80007aa183b0
    [   46.123040] x25: 0000000000000001 x24: 0000000000000140
    [   46.128336] x23: ffff80007aa1839c x22: ffff80007aa17fb0
    [   46.133632] x21: ffff80007aa18000 x20: ffff0000091a7000
    [   46.138927] x19: 0000000000000000 x18: ffffffffffffffff
    [   46.144223] x17: 0000000000000000 x16: 0000000000000000
    [   46.149519] x15: ffff0000091a96c8 x14: 07740775076f0720
    [   46.154814] x13: 07640765076d0769 x12: 0774072007300720
    [   46.160110] x11: 0765077507650775 x10: 0771072007740769
    [   46.165406] x9 : 076d0773076e0761 x8 : 077207740720073a
    [   46.170702] x7 : 072907630761076d x6 : ffff80007ff9a0c0
    [   46.175997] x5 : ffff80007ff9a0c0 x4 : 0000000000000002
    [   46.181293] x3 : 0000000000000000 x2 : ffff0000091ac180
    [   46.186589] x1 : e6a742ebe628e800 x0 : 0000000000000000
    [   46.191885] Call trace:
    [   46.194326]  dev_watchdog+0x2cc/0x2d8
    [   46.197980]  call_timer_fn+0x20/0x78
    [   46.201544]  expire_timers+0xa4/0xb0
    [   46.205108]  run_timer_softirq+0xe4/0x198
    [   46.209107]  __do_softirq+0x114/0x210
    [   46.212760]  irq_exit+0xd0/0xd8
    [   46.215895]  __handle_domain_irq+0x60/0xb0
    [   46.219977]  gic_handle_irq+0x58/0xa8
    [   46.223628]  el1_irq+0xb0/0x128
    [   46.226761]  arch_cpu_idle+0x10/0x18
    [   46.230326]  do_idle+0x1d4/0x288
    [   46.233544]  cpu_startup_entry+0x24/0x28
    [   46.237457]  secondary_start_kernel+0x17c/0x1c0
    [   46.241971] ---[ end trace 57048cd1372cd828 ]---
    
    Inspection of queue showed Jumbo packets were not sent out.
    The ring Jumbo packet function needs to set the OWN bit so
    the packet is sent.
    Signed-off-by: default avatarThor Thayer <thor.thayer@linux.intel.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    487e2e22
ring_mode.c 4.51 KB