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[ Upstream commit f913308879bc6ae437ce64d878c7b05643ddea44 ]
GCC 8 contains a number of new warnings as well as enhancements to existing
checkers. The warning - Wstringop-truncation - warns for calls to bounded
string manipulation functions such as strncat, strncpy, and stpncpy that
may either truncate the copied string or leave the destination unchanged.
In our case the destination string length (32 bytes) is much shorter than
the source string (64 bytes) which causes this warning to show up. In
general the destination has to be at least a byte larger than the length
of the source string with strncpy for this warning not to showup.
This can be easily fixed by using strlcpy instead which already does the
truncation to the string. Documentation for this function can be
found here:
https://elixir.bootlin.com/linux/latest/source/lib/string.c#L141
Fixes: 1738cd3ed342 ("net: ena: Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Sameeh Jubran <sameehj@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 78a55d05def95144ca5fa9a64c49b2a0636a9866 ]
napi poll functions should be initialized before running request_irq(),
to handle a rare condition where there is a pending interrupt, causing
the ISR to fire immediately while the poll function wasn't set yet,
causing a NULL dereference.
Fixes: 1738cd3ed342 ("net: ena: Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit d79c3888bde6581da7ff9f9d6f581900ecb5e632 ]
Memory mapped with devm_ioremap is automatically freed when the driver
is disconnected from the device. Therefore there is no need to
explicitly call devm_iounmap.
Fixes: 0857d92f71b6 ("net: ena: add missing unmap bars on device removal")
Fixes: 411838e7b41c ("net: ena: fix rare kernel crash when bar memory remap fails")
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 28abf4e9c9201eda5c4d29ea609d07e877b464b8 ]
Add READ_ONCE calls where necessary (for example when iterating
over a memory field that gets updated by the hardware).
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit ef5b0771d247379c90c8bf1332ff32f7f74bff7f ]
The buffer length field in the ena rx descriptor is 16 bit, and the
current driver passes a full page in each ena rx descriptor.
When PAGE_SIZE equals 64kB or more, the buffer length field becomes
zero.
To solve this issue, limit the ena Rx descriptor to use 16kB even
when allocating 64kB kernel pages. This change would not impact ena
device functionality, as 16kB is still larger than maximum MTU.
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 101f0cd4f2216d32f1b8a75a2154cf3997484ee2 ]
UBSAN triggers the following undefined behaviour warnings:
[...]
[ 13.236124] UBSAN: Undefined behaviour in drivers/net/ethernet/amazon/ena/ena_eth_com.c:468:22
[ 13.240043] shift exponent 64 is too large for 64-bit type 'long long unsigned int'
[...]
[ 13.744769] UBSAN: Undefined behaviour in drivers/net/ethernet/amazon/ena/ena_eth_com.c:373:4
[ 13.748694] shift exponent 64 is too large for 64-bit type 'long long unsigned int'
[...]
When splitting the address to high and low, GENMASK_ULL is used to generate
a bitmask with dma_addr_bits field from io_sq (in ena_com_prepare_tx and
ena_com_add_single_rx_desc).
The problem is that dma_addr_bits is not initialized with a proper value
(besides being cleared in ena_com_create_io_queue).
Assign dma_addr_bits the correct value that is stored in ena_dev when
initializing the SQ.
Fixes: 1738cd3ed342 ("net: ena: Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Gal Pressman <pressmangal@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 7853b49ce8e0ef6364d24512b287463841d71bd3 ]
Under certain conditions MSI-X interrupt might arrive right after it
was unmasked in ena_up(). There is a chance it would be processed by
the driver before device ENA_FLAG_DEV_UP flag is set. In such a case
the interrupt is ignored.
ENA device operates in auto-masked mode, therefore ignoring
interrupt leaves it masked for good.
Moving unmask of interrupt to be the last step in ena_up().
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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ethtool ena_get_channels() expose the max number of queues as the max
number of queues ENA supports (128 queues) and not the actual number
of created queues.
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This failure is rare and only found on testing where deliberately fail
devm_ioremap()
[ 451.170464] ena 0000:04:00.0: failed to remap regs bar
451.170549] Workqueue: pciehp-1 pciehp_power_thread
[ 451.170551] task: ffff88085a5f2d00 task.stack: ffffc9000756c000
[ 451.170552] RIP: 0010:devm_iounmap+0x2d/0x40
[ 451.170553] RSP: 0018:ffffc9000756fac0 EFLAGS: 00010282
[ 451.170554] RAX: 00000000fffffffe RBX: 0000000000000000 RCX:
0000000000000000
[ 451.170555] RDX: ffffffff813a7e00 RSI: 0000000000000282 RDI:
0000000000000282
[ 451.170556] RBP: ffffc9000756fac8 R08: 00000000fffffffe R09:
00000000000009b7
[ 451.170557] R10: 0000000000000005 R11: 00000000000009b6 R12:
ffff880856c9d0a0
[ 451.170558] R13: ffffc9000f5c90c0 R14: ffff880856c9d0a0 R15:
0000000000000028
[ 451.170559] FS: 0000000000000000(0000) GS:ffff88085f400000(0000)
knlGS:0000000000000000
[ 451.170560] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 451.170561] CR2: 00007f169038b000 CR3: 0000000001c09000 CR4:
00000000003406f0
[ 451.170562] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 451.170562] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 451.170563] Call Trace:
[ 451.170572] ena_release_bars.isra.48+0x34/0x60 [ena]
[ 451.170574] ena_probe+0x144/0xd90 [ena]
[ 451.170579] ? ida_simple_get+0x98/0x100
[ 451.170585] ? kernfs_next_descendant_post+0x40/0x50
[ 451.170591] local_pci_probe+0x45/0xa0
[ 451.170592] pci_device_probe+0x157/0x180
[ 451.170599] driver_probe_device+0x2a8/0x460
[ 451.170600] __device_attach_driver+0x7e/0xe0
[ 451.170602] ? driver_allows_async_probing+0x30/0x30
[ 451.170603] bus_for_each_drv+0x68/0xb0
[ 451.170605] __device_attach+0xdd/0x160
[ 451.170607] device_attach+0x10/0x20
[ 451.170610] pci_bus_add_device+0x4f/0xa0
[ 451.170611] pci_bus_add_devices+0x39/0x70
[ 451.170613] pciehp_configure_device+0x96/0x120
[ 451.170614] pciehp_enable_slot+0x1b3/0x290
[ 451.170616] pciehp_power_thread+0x3b/0xb0
[ 451.170622] process_one_work+0x149/0x360
[ 451.170623] worker_thread+0x4d/0x3c0
[ 451.170626] kthread+0x109/0x140
[ 451.170627] ? rescuer_thread+0x380/0x380
[ 451.170628] ? kthread_park+0x60/0x60
[ 451.170632] ret_from_fork+0x25/0x30
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Decrease log level of checksum errors as these messages can be
triggered remotely by bad packets.
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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rx drop counter is reported by the device in the keep-alive
event.
update the driver's counter with the device counter.
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In ena_com_mem_addr_set(), use the above functions to split dma address
to the lower 32 bits and the higher 16 bits.
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Current driver tries to allocate msix vectors as the number of the
negotiated io queues. (with another msix vector for management).
If pci_alloc_irq_vectors() fails, the driver aborts the probe
and the ENA network device is never brought up.
With this patch, the driver's logic will reduce the number of IO
queues to the number of allocated msix vectors (minus one for management)
instead of failing probe().
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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ENA driver post Rx buffers through the Rx submission queue
for the ENA device to fill them with receive packets.
Each Rx buffer is marked with req_id in the Rx descriptor.
Newer ENA devices could consume the posted Rx buffer in out of order,
and as result the corresponding Rx completion queue will have Rx
completion descriptors with non contiguous req_id(s)
In this change the driver holds two rings.
The first ring (called free_rx_ids) is a mapping ring.
It holds all the unused request ids.
The values in this ring are from 0 to ring_size -1.
When the driver wants to allocate a new Rx buffer it uses the head of
free_rx_ids and uses it's value as the index for rx_buffer_info ring.
The req_id is also written to the Rx descriptor
Upon Rx completion,
The driver took the req_id from the completion descriptor and uses it
as index in rx_buffer_info.
The req_id is then return to the free_rx_ids ring.
This patch also adds statistics to inform when the driver receive out
of range or unused req_id.
Note:
free_rx_ids is only accessible from the napi handler, so no locking is
required
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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For each device reset, log to the device what is the cause
the reset occur.
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Instead of using:
memset(ptr, 0x0, sizeof(struct ...))
use:
memset(ptr, 0x0, sizeor(*ptr))
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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With this patch, ENA device can update the ena driver about
the desired timeout values:
These values are part of the "hardware hints" which are transmitted
to the driver as Asynchronous event through ENA async
event notification queue.
In case the ENA device does not support this capability,
the driver will use its own default values.
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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return -EOPNOTSUPP instead of -EPERM.
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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check_for_missing_tx_completions() is called from a timer
task and looking for lost tx packets.
The old implementation accumulate all the lost tx packets
and did not check if those packets were retrieved on a later stage.
This cause to a situation where the driver reset
the device for no reason.
Fixes: 1738cd3ed342 ("Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fixes: 1738cd3ed342 ("Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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For the rare case where the device runs out of free rx buffer
descriptors (in case of pressure on kernel memory),
and the napi handler continuously fail to refill new Rx descriptors
until device rx queue totally runs out of all free rx buffers
to post incoming packet, leading to a deadlock:
* The device won't send interrupts since all the new
Rx packets will be dropped.
* The napi handler won't try to allocate new Rx descriptors
since allocation is part of NAPI that's not being invoked any more
The fix involves detecting this scenario and rescheduling NAPI
(to refill buffers) by the keepalive/watchdog task.
Fixes: 1738cd3ed342 ("Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch also change the mapping functions to devm_ functions
Fixes: 1738cd3ed342 ("Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Bug:
"Completion context is occupied" error printout will be noticed in
dmesg.
This error will cause the admin command to fail, which will lead to
an ena_probe() failure or a watchdog reset (depends on which admin
command failed).
Root cause:
__ena_com_submit_admin_cmd() is the function that submits new entries to
the admin queue.
The function have a check that makes sure the queue is not full and the
function does not override any outstanding command.
It uses head and tail indexes for this check.
The head is increased by ena_com_handle_admin_completion() which runs
from interrupt context, and the tail index is increased by the submit
function (the function is running under ->q_lock, so there is no risk
of multithread increment).
Each command is associated with a completion context. This context
allocated before call to __ena_com_submit_admin_cmd() and freed by
ena_com_wait_and_process_admin_cq_interrupts(), right after the command
was completed.
This can lead to a state where the head was increased, the check passed,
but the completion context is still in use.
Solution:
Use the atomic variable ->outstanding_cmds instead of using the head and
the tail indexes.
This variable is safe for use since it is bumped in get_comp_ctx() in
__ena_com_submit_admin_cmd() and is freed by comp_ctxt_release()
Fixes: 1738cd3ed342 ("Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fixes: 1738cd3ed342 ("Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fixing a bug that the driver does not unmask the IO interrupts
in ndo_open():
occasionally, the MSI-X interrupt (for one or more IO queues)
can be masked when ndo_close() was called.
If that is followed by ndo open(),
then the MSI-X will be still masked so no interrupt
will be received by the driver.
Fixes: 1738cd3ed342 ("Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The current flow to detect admin completion is:
while (command_not_completed) {
if (timeout)
error
check_for_completion()
sleep()
}
So in case the sleep took more than the timeout
(in case the thread/workqueue was not scheduled due to higher priority
task or prolonged VMexit), the driver can detect a stall even if
the completion is present.
The fix changes the order of this function to first check for
completion and only after that check if the timeout expired.
Fixes: 1738cd3ed342 ("Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Remove the deprecated pci_enable_msix API in favour of its successor.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The check in ena_remove() for the pci driver data not being NULL is not
needed, since it is always set in the probe() function. Remove the
superfluous check.
Signed-off-by: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Netanel Belgazal <netanel@annapurnalabs.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Move the host info config to be the first admin command that is executed.
This change require the driver to remove the 'feature check'
from host info configuration flow.
The check is removed since the supported features bitmask field
is retrieved only after calling ENA_ADMIN_DEVICE_ATTRIBUTES admin command.
If set host info is not supported an error will be returned by the device.
Signed-off-by: Netanel Belgazal <netanel@annapurnalabs.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The timeouts were too agressive and sometimes cause false alarms.
Signed-off-by: Netanel Belgazal <netanel@annapurnalabs.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Netanel Belgazal <netanel@annapurnalabs.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Completion descriptors are accessed from the driver and from the device.
To avoid reading the old value, use READ_ONCE macro.
Signed-off-by: Netanel Belgazal <netanel@annapurnalabs.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Do not unamsk interrupts if we are in busy poll mode.
Signed-off-by: Netanel Belgazal <netanel@annapurnalabs.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If the ena driver detects that the device is not behave as expected,
it tries to reset the device.
The reset flow calls ena_down, which will frees all the resources
the driver allocates and then it will reset the device.
This flow can cause memory corruption if the device is still writes
to the driver's memory space.
To overcome this potential race, move the reset before the device
resources are freed.
Signed-off-by: Netanel Belgazal <netanel@annapurnalabs.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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ndo_get_stat64() can be called from atomic context, but the current
implementation sends an admin command to retrieve the statistics from
the device. This admin command can sleep.
This patch re-factors the implementation of ena_get_stats64() to use
the {rx,tx}bytes/count from the driver's inner counters, and to obtain
the rx drop counter from the asynchronous keep alive (heart bit)
event.
Signed-off-by: Netanel Belgazal <netanel@annapurnalabs.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If for some reason the device stops responding, and the device reset
failes to recover the device, the mmio register read data structure
will not be reinitialized.
On driver removal, the driver will also try to reset the device, but
this time the mmio data structure will be NULL.
To solve this issue, perform the device reset in the remove function
only if the device is runnig.
Crash log
54.240382] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 54.244186] IP: [<ffffffffc067de5a>] ena_com_reg_bar_read32+0x8a/0x180 [ena_drv]
[ 54.244186] PGD 0
[ 54.244186] Oops: 0002 [#1] SMP
[ 54.244186] Modules linked in: ena_drv(OE-) snd_hda_codec_generic kvm_intel kvm crct10dif_pclmul ppdev crc32_pclmul ghash_clmulni_intel aesni_intel snd_hda_intel aes_x86_64 snd_hda_controller lrw gf128mul cirrus glue_helper ablk_helper ttm snd_hda_codec drm_kms_helper cryptd snd_hwdep drm snd_pcm pvpanic snd_timer syscopyarea sysfillrect snd parport_pc sysimgblt serio_raw soundcore i2c_piix4 mac_hid lp parport psmouse floppy
[ 54.244186] CPU: 5 PID: 1841 Comm: rmmod Tainted: G OE 3.16.0-031600-generic #201408031935
[ 54.244186] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[ 54.244186] task: ffff880135852880 ti: ffff8800bb640000 task.ti: ffff8800bb640000
[ 54.244186] RIP: 0010:[<ffffffffc067de5a>] [<ffffffffc067de5a>] ena_com_reg_bar_read32+0x8a/0x180 [ena_drv]
[ 54.244186] RSP: 0018:ffff8800bb643d50 EFLAGS: 00010083
[ 54.244186] RAX: 000000000000deb0 RBX: 0000000000030d40 RCX: 0000000000000003
[ 54.244186] RDX: 0000000000000202 RSI: 0000000000000058 RDI: ffffc90000775104
[ 54.244186] RBP: ffff8800bb643d88 R08: 0000000000000000 R09: cf00000000000000
[ 54.244186] R10: 0000000fffffffe0 R11: 0000000000000001 R12: 0000000000000000
[ 54.244186] R13: ffffc90000765000 R14: ffffc90000775104 R15: 00007fca1fa98090
[ 54.244186] FS: 00007fca1f1bd740(0000) GS:ffff88013fd40000(0000) knlGS:0000000000000000
[ 54.244186] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 54.244186] CR2: 0000000000000000 CR3: 00000000b9cf6000 CR4: 00000000001406e0
[ 54.244186] Stack:
[ 54.244186] 0000000000000202 0000005800000286 ffffc90000765000 ffffc90000765000
[ 54.244186] ffff880135f6b000 ffff8800b9360000 00007fca1fa98090 ffff8800bb643db8
[ 54.244186] ffffffffc0680b3d ffff8800b93608c0 ffffc90000765000 ffff880135f6b000
[ 54.244186] Call Trace:
[ 54.244186] [<ffffffffc0680b3d>] ena_com_dev_reset+0x1d/0x1b0 [ena_drv]
[ 54.244186] [<ffffffffc0678497>] ena_remove+0xa7/0x130 [ena_drv]
[ 54.244186] [<ffffffff813d4df6>] pci_device_remove+0x46/0xc0
[ 54.244186] [<ffffffff814c3b7f>] __device_release_driver+0x7f/0xf0
[ 54.244186] [<ffffffff814c4738>] driver_detach+0xc8/0xd0
[ 54.244186] [<ffffffff814c3969>] bus_remove_driver+0x59/0xd0
[ 54.244186] [<ffffffff814c4fde>] driver_unregister+0x2e/0x60
[ 54.244186] [<ffffffff810f0a80>] ? show_refcnt+0x40/0x40
[ 54.244186] [<ffffffff813d4ec3>] pci_unregister_driver+0x23/0xa0
[ 54.244186] [<ffffffffc068413f>] ena_cleanup+0x10/0xed1 [ena_drv]
[ 54.244186] [<ffffffff810f3a47>] SyS_delete_module+0x157/0x1e0
[ 54.244186] [<ffffffff81014fb7>] ? do_notify_resume+0xc7/0xd0
[ 54.244186] [<ffffffff81793fad>] system_call_fastpath+0x1a/0x1f
[ 54.244186] Code: c3 4d 8d b5 04 01 01 00 4c 89 f7 e8 e1 5a 11 c1 48 89 45 c8 41 0f b7 85 00 01 01 00 8d 48 01 66 2d 52 21 66 41 89 8d 00 01 01 00 <66> 41 89 04 24 0f b7 45 d4 89 45 d0 89 c1 41 0f b7 85 00 01 01
[ 54.244186] RIP [<ffffffffc067de5a>] ena_com_reg_bar_read32+0x8a/0x180 [ena_drv]
[ 54.244186] RSP <ffff8800bb643d50>
[ 54.244186] CR2: 0000000000000000
[ 54.244186] ---[ end trace 18dd9889b6497810 ]---
Signed-off-by: Netanel Belgazal <netanel@annapurnalabs.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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ENA default hash configures IPv4_frag hash twice instead of
configure non-IP packets.
The bug caused IPv4 fragmented packets to be calculated based on
L2 source and destination address instead of L3 source and destination.
IPv4 packets can reach to the wrong Rx queue.
Signed-off-by: Netanel Belgazal <netanel@annapurnalabs.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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ena_flow_data_to_flow_hash and ena_flow_hash_to_flow_type
treat the ena_flow_hash_to_flow_type enum as power of two values.
Change the values of ena_admin_flow_hash_fields to be power of two values.
This bug effect the ethtool set/get rxnfc.
ethtool will report wrong values hash fields for get and will
configure wrong hash fields in set.
Signed-off-by: Netanel Belgazal <netanel@annapurnalabs.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The ENA driver tries to open a queue per vCPU.
To determine how many vCPUs the instance have it uses num_possible_cpus()
while it should have use num_online_cpus() instead.
Signed-off-by: Netanel Belgazal <netanel@annapurnalabs.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Remove NETIF_F_NTUPLE from netdev->features.
The ENA device driver does not support ntuple filtering.
Signed-off-by: Netanel Belgazal <netanel@annapurnalabs.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The network device operation for reading statistics is only called
in one place, and it ignores the return value. Having a structure
return value is potentially confusing because some future driver could
incorrectly assume that the return value was used.
Fix all drivers with ndo_get_stats64 to have a void function.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Use setup_timer() instead of init_timer(), being the preferred/standard
way to set a timer up.
Also, quoting the mod_timer() function comment:
-> mod_timer() is a more efficient way to update the expire field of an
active timer (if the timer is inactive it will be activated).
Use setup_timer and mod_timer to setup and arm a timer, to make the code
cleaner and easier to read.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Somehow, I missed a healthy number of ethernet drivers in the last pass.
Most of these drivers either were in need of an updated max_mtu to make
jumbo frames possible to enable again. In a few cases, also setting a
different min_mtu to match previous lower bounds. There are also a few
drivers that had no upper bounds checking, so they're getting a brand new
ETH_MAX_MTU that is identical to IP_MAX_MTU, but accessible by includes
all ethernet and ethernet-like drivers all have already.
acenic:
- min_mtu = 0, max_mtu = 9000
amazon/ena:
- min_mtu = 128, max_mtu = adapter->max_mtu
amd/xgbe:
- min_mtu = 0, max_mtu = 9000
sb1250:
- min_mtu = 0, max_mtu = 1518
cxgb3:
- min_mtu = 81, max_mtu = 65535
cxgb4:
- min_mtu = 81, max_mtu = 9600
cxgb4vf:
- min_mtu = 81, max_mtu = 65535
benet:
- min_mtu = 256, max_mtu = 9000
ibmveth:
- min_mtu = 68, max_mtu = 65535
ibmvnic:
- min_mtu = adapter->min_mtu, max_mtu = adapter->max_mtu
- remove now redundant ibmvnic_change_mtu
jme:
- min_mtu = 1280, max_mtu = 9202
mv643xx_eth:
- min_mtu = 64, max_mtu = 9500
mlxsw:
- min_mtu = 0, max_mtu = 65535
- Basically bypassing the core checks, and instead relying on dynamic
checks in the respective switch drivers' ndo_change_mtu functions
ns83820:
- min_mtu = 0
- remove redundant ns83820_change_mtu, only checked for mtu > 1500
netxen:
- min_mtu = 0, max_mtu = 8000 (P2), max_mtu = 9600 (P3)
qlge:
- min_mtu = 1500, max_mtu = 9000
- driver only supports setting mtu to 1500 or 9000, so the core check only
rules out < 1500 and > 9000, qlge_change_mtu still needs to check that
the value is 1500 or 9000
qualcomm/emac:
- min_mtu = 46, max_mtu = 9194
xilinx_axienet:
- min_mtu = 64, max_mtu = 9000
Fixes: 61e84623ace3 ("net: centralize net_device min/max MTU checking")
CC: netdev@vger.kernel.org
CC: Jes Sorensen <jes@trained-monkey.org>
CC: Netanel Belgazal <netanel@annapurnalabs.com>
CC: Tom Lendacky <thomas.lendacky@amd.com>
CC: Santosh Raspatur <santosh@chelsio.com>
CC: Hariprasad S <hariprasad@chelsio.com>
CC: Sathya Perla <sathya.perla@broadcom.com>
CC: Ajit Khaparde <ajit.khaparde@broadcom.com>
CC: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
CC: Somnath Kotur <somnath.kotur@broadcom.com>
CC: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
CC: John Allen <jallen@linux.vnet.ibm.com>
CC: Guo-Fu Tseng <cooldavid@cooldavid.org>
CC: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
CC: Jiri Pirko <jiri@mellanox.com>
CC: Ido Schimmel <idosch@mellanox.com>
CC: Manish Chopra <manish.chopra@qlogic.com>
CC: Sony Chacko <sony.chacko@qlogic.com>
CC: Rajesh Borundia <rajesh.borundia@qlogic.com>
CC: Timur Tabi <timur@codeaurora.org>
CC: Anirudha Sarangi <anirudh@xilinx.com>
CC: John Linn <John.Linn@xilinx.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch changes the return type of ena_set_push_mode() to be void,
as it always returns 0.
Signed-off-by: Rami Rosen <ramirose@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fix to return a negative error code from the invalid dma width
error handling case instead of 0.
Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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