487e2e22ab
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: Thor Thayer <thor.thayer@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.