I'm seeing series of e1000e resets (sometimes endless) at system boot
if something generates tx traffic at this time. In my case this is
netconsole who sends message "e1000e 0000:02:00.0: Some CPU C-states
have been disabled in order to enable jumbo frames" from e1000e itself.
As result e1000_watchdog_task sees used tx buffer while carrier is off
and start this reset cycle again.
[ 17.794359] e1000e: eth1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
[ 17.794714] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[ 22.936455] e1000e 0000:02:00.0 eth1: changing MTU from 1500 to 9000
[ 23.033336] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
[ 26.102364] e1000e: eth1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
[ 27.174495] 8021q: 802.1Q VLAN Support v1.8
[ 27.174513] 8021q: adding VLAN 0 to HW filter on device eth1
[ 30.671724] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation
[ 30.898564] netpoll: netconsole: local port 6666
[ 30.898566] netpoll: netconsole: local IPv6 address 2a02:6b8:0:80b:beae:c5ff:fe28:23f8
[ 30.898567] netpoll: netconsole: interface 'eth1'
[ 30.898568] netpoll: netconsole: remote port 6666
[ 30.898568] netpoll: netconsole: remote IPv6 address 2a02:6b8:b000:605c:e61d:2dff:fe03:3790
[ 30.898569] netpoll: netconsole: remote ethernet address b0:a8:6e:f4:ff:c0
[ 30.917747] console [netcon0] enabled
[ 30.917749] netconsole: network logging started
[ 31.453353] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
[ 34.185730] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
[ 34.321840] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
[ 34.465822] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
[ 34.597423] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
[ 34.745417] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
[ 34.877356] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
[ 35.005441] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
[ 35.157376] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
[ 35.289362] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
[ 35.417441] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
[ 37.790342] e1000e: eth1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
This patch flushes tx buffers only once when carrier is off
rather than at each watchdog iteration.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
The change is based on the issue found by Kangjie Lu <kjlu@umn.edu> where
we not checking the return value of a register read/write which could result
in a NULL pointer dereference if the read/write fails.
Since we are only trying to disable the far-end loopback, if the read
and write of register fails, we do not want to bail out of the function.
We just want to log that it failed to disable and continue on.
CC: Sasha Neftin <sasha.neftin@intel.com>
CC: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
e1000e sets different WoL settings in system suspend callback and
runtime suspend callback.
The suspend direct complete optimization leaves e1000e in runtime
suspended state with wrong WoL setting during system suspend.
To fix this, we need to disable suspend direct complete optimization to
let e1000e always use suspend callback to set correct WoL during system
suspend.
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
We already need to zero out memory for dma_alloc_coherent(), as such
using dma_zalloc_coherent() is superflous. Phase it out.
This change was generated with the following Coccinelle SmPL patch:
@ replace_dma_zalloc_coherent @
expression dev, size, data, handle, flags;
@@
-dma_zalloc_coherent(dev, size, handle, flags)
+dma_alloc_coherent(dev, size, handle, flags)
Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
[hch: re-ran the script on the latest tree]
Signed-off-by: Christoph Hellwig <hch@lst.de>
While reviewing code, I noticed that Eric Dumazet recommends that
drivers check the return code of napi_complete_done, and use that
to decide to enable interrupts or not when exiting poll. One of
the Intel drivers was already fixed (ixgbe).
Upon looking at the Intel drivers as a whole, we are handling our
polling and NAPI exit in a few different ways based on whether we
have multiqueue and whether we have Tx cleanup included. Several
drivers had the bug of exiting NAPI with return 0, which appears
to mess up the accounting in the stack.
Consolidate all the NAPI routines to do best known way of exiting
and to just mostly look like each other.
1) check return code of napi_complete_done to control interrupt enable
2) return the actual amount of work done.
3) return budget immediately if need NAPI poll again
Tested the changes on e1000e with a high interrupt rate set, and
it shows about an 8% reduction in the CPU utilization when busy
polling because we aren't re-enabling interrupts when we're about
to be polled.
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This adds support for the PTP_SYS_OFFSET_EXTENDED ioctl.
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Jacob Keller <jacob.e.keller@intel.com>
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It seems with some NICs supported by the e1000e driver a SYSTIM reading
may occasionally be few microseconds before the previous reading and if
enabled also pass e1000e_sanitize_systim() without reaching the maximum
number of rereads, even if the function is modified to check three
consecutive readings (i.e. it doesn't look like a double read error).
This causes an underflow in the timecounter and the PHC time jumps hours
ahead.
This was observed on 82574, I217 and I219. The fastest way to reproduce
it is to run a program that continuously calls the PTP_SYS_OFFSET ioctl
on the PHC.
Modify e1000e_phc_gettime() to use timecounter_cyc2time() instead of
timecounter_read() in order to allow non-monotonic SYSTIM readings and
prevent the PHC from jumping.
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
Acked-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
-----BEGIN PGP SIGNATURE-----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=58I4
-----END PGP SIGNATURE-----
Merge tag 'pci-v4.20-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
- Fix ASPM link_state teardown on removal (Lukas Wunner)
- Fix misleading _OSC ASPM message (Sinan Kaya)
- Make _OSC optional for PCI (Sinan Kaya)
- Don't initialize ASPM link state when ACPI_FADT_NO_ASPM is set
(Patrick Talbert)
- Remove x86 and arm64 node-local allocation for host bridge structures
(Punit Agrawal)
- Pay attention to device-specific _PXM node values (Jonathan Cameron)
- Support new Immediate Readiness bit (Felipe Balbi)
- Differentiate between pciehp surprise and safe removal (Lukas Wunner)
- Remove unnecessary pciehp includes (Lukas Wunner)
- Drop pciehp hotplug_slot_ops wrappers (Lukas Wunner)
- Tolerate PCIe Slot Presence Detect being hardwired to zero to
workaround broken hardware, e.g., the Wilocity switch/wireless device
(Lukas Wunner)
- Unify pciehp controller & slot structs (Lukas Wunner)
- Constify hotplug_slot_ops (Lukas Wunner)
- Drop hotplug_slot_info (Lukas Wunner)
- Embed hotplug_slot struct into users instead of allocating it
separately (Lukas Wunner)
- Initialize PCIe port service drivers directly instead of relying on
initcall ordering (Keith Busch)
- Restore PCI config state after a slot reset (Keith Busch)
- Save/restore DPC config state along with other PCI config state
(Keith Busch)
- Reference count devices during AER handling to avoid race issue with
concurrent hot removal (Keith Busch)
- If an Upstream Port reports ERR_FATAL, don't try to read the Port's
config space because it is probably unreachable (Keith Busch)
- During error handling, use slot-specific reset instead of secondary
bus reset to avoid link up/down issues on hotplug ports (Keith Busch)
- Restore previous AER/DPC handling that does not remove and
re-enumerate devices on ERR_FATAL (Keith Busch)
- Notify all drivers that may be affected by error recovery resets
(Keith Busch)
- Always generate error recovery uevents, even if a driver doesn't have
error callbacks (Keith Busch)
- Make PCIe link active reporting detection generic (Keith Busch)
- Support D3cold in PCIe hierarchies during system sleep and runtime,
including hotplug and Thunderbolt ports (Mika Westerberg)
- Handle hpmemsize/hpiosize kernel parameters uniformly, whether slots
are empty or occupied (Jon Derrick)
- Remove duplicated include from pci/pcie/err.c and unused variable
from cpqphp (YueHaibing)
- Remove driver pci_cleanup_aer_uncorrect_error_status() calls (Oza
Pawandeep)
- Uninline PCI bus accessors for better ftracing (Keith Busch)
- Remove unused AER Root Port .error_resume method (Keith Busch)
- Use kfifo in AER instead of a local version (Keith Busch)
- Use threaded IRQ in AER bottom half (Keith Busch)
- Use managed resources in AER core (Keith Busch)
- Reuse pcie_port_find_device() for AER injection (Keith Busch)
- Abstract AER interrupt handling to disconnect error injection (Keith
Busch)
- Refactor AER injection callbacks to simplify future improvments
(Keith Busch)
- Remove unused Netronome NFP32xx Device IDs (Jakub Kicinski)
- Use bitmap_zalloc() for dma_alias_mask (Andy Shevchenko)
- Add switch fall-through annotations (Gustavo A. R. Silva)
- Remove unused Switchtec quirk variable (Joshua Abraham)
- Fix pci.c kernel-doc warning (Randy Dunlap)
- Remove trivial PCI wrappers for DMA APIs (Christoph Hellwig)
- Add Intel GPU device IDs to spurious interrupt quirk (Bin Meng)
- Run Switchtec DMA aliasing quirk only on NTB endpoints to avoid
useless dmesg errors (Logan Gunthorpe)
- Update Switchtec NTB documentation (Wesley Yung)
- Remove redundant "default n" from Kconfig (Bartlomiej Zolnierkiewicz)
- Avoid panic when drivers enable MSI/MSI-X twice (Tonghao Zhang)
- Add PCI support for peer-to-peer DMA (Logan Gunthorpe)
- Add sysfs group for PCI peer-to-peer memory statistics (Logan
Gunthorpe)
- Add PCI peer-to-peer DMA scatterlist mapping interface (Logan
Gunthorpe)
- Add PCI configfs/sysfs helpers for use by peer-to-peer users (Logan
Gunthorpe)
- Add PCI peer-to-peer DMA driver writer's documentation (Logan
Gunthorpe)
- Add block layer flag to indicate driver support for PCI peer-to-peer
DMA (Logan Gunthorpe)
- Map Infiniband scatterlists for peer-to-peer DMA if they contain P2P
memory (Logan Gunthorpe)
- Register nvme-pci CMB buffer as PCI peer-to-peer memory (Logan
Gunthorpe)
- Add nvme-pci support for PCI peer-to-peer memory in requests (Logan
Gunthorpe)
- Use PCI peer-to-peer memory in nvme (Stephen Bates, Steve Wise,
Christoph Hellwig, Logan Gunthorpe)
- Cache VF config space size to optimize enumeration of many VFs
(KarimAllah Ahmed)
- Remove unnecessary <linux/pci-ats.h> include (Bjorn Helgaas)
- Fix VMD AERSID quirk Device ID matching (Jon Derrick)
- Fix Cadence PHY handling during probe (Alan Douglas)
- Signal Cadence Endpoint interrupts via AXI region 0 instead of last
region (Alan Douglas)
- Write Cadence Endpoint MSI interrupts with 32 bits of data (Alan
Douglas)
- Remove redundant controller tests for "device_type == pci" (Rob
Herring)
- Document R-Car E3 (R8A77990) bindings (Tho Vu)
- Add device tree support for R-Car r8a7744 (Biju Das)
- Drop unused mvebu PCIe capability code (Thomas Petazzoni)
- Add shared PCI bridge emulation code (Thomas Petazzoni)
- Convert mvebu to use shared PCI bridge emulation (Thomas Petazzoni)
- Add aardvark Root Port emulation (Thomas Petazzoni)
- Support 100MHz/200MHz refclocks for i.MX6 (Lucas Stach)
- Add initial power management for i.MX7 (Leonard Crestez)
- Add PME_Turn_Off support for i.MX7 (Leonard Crestez)
- Fix qcom runtime power management error handling (Bjorn Andersson)
- Update TI dra7xx unaligned access errata workaround for host mode as
well as endpoint mode (Vignesh R)
- Fix kirin section mismatch warning (Nathan Chancellor)
- Remove iproc PAXC slot check to allow VF support (Jitendra Bhivare)
- Quirk Keystone K2G to limit MRRS to 256 (Kishon Vijay Abraham I)
- Update Keystone to use MRRS quirk for host bridge instead of open
coding (Kishon Vijay Abraham I)
- Refactor Keystone link establishment (Kishon Vijay Abraham I)
- Simplify and speed up Keystone link training (Kishon Vijay Abraham I)
- Remove unused Keystone host_init argument (Kishon Vijay Abraham I)
- Merge Keystone driver files into one (Kishon Vijay Abraham I)
- Remove redundant Keystone platform_set_drvdata() (Kishon Vijay
Abraham I)
- Rename Keystone functions for uniformity (Kishon Vijay Abraham I)
- Add Keystone device control module DT binding (Kishon Vijay Abraham
I)
- Use SYSCON API to get Keystone control module device IDs (Kishon
Vijay Abraham I)
- Clean up Keystone PHY handling (Kishon Vijay Abraham I)
- Use runtime PM APIs to enable Keystone clock (Kishon Vijay Abraham I)
- Clean up Keystone config space access checks (Kishon Vijay Abraham I)
- Get Keystone outbound window count from DT (Kishon Vijay Abraham I)
- Clean up Keystone outbound window configuration (Kishon Vijay Abraham
I)
- Clean up Keystone DBI setup (Kishon Vijay Abraham I)
- Clean up Keystone ks_pcie_link_up() (Kishon Vijay Abraham I)
- Fix Keystone IRQ status checking (Kishon Vijay Abraham I)
- Add debug messages for all Keystone errors (Kishon Vijay Abraham I)
- Clean up Keystone includes and macros (Kishon Vijay Abraham I)
- Fix Mediatek unchecked return value from devm_pci_remap_iospace()
(Gustavo A. R. Silva)
- Fix Mediatek endpoint/port matching logic (Honghui Zhang)
- Change Mediatek Root Port Class Code to PCI_CLASS_BRIDGE_PCI (Honghui
Zhang)
- Remove redundant Mediatek PM domain check (Honghui Zhang)
- Convert Mediatek to pci_host_probe() (Honghui Zhang)
- Fix Mediatek MSI enablement (Honghui Zhang)
- Add Mediatek system PM support for MT2712 and MT7622 (Honghui Zhang)
- Add Mediatek loadable module support (Honghui Zhang)
- Detach VMD resources after stopping root bus to prevent orphan
resources (Jon Derrick)
- Convert pcitest build process to that used by other tools (iio, perf,
etc) (Gustavo Pimentel)
* tag 'pci-v4.20-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (140 commits)
PCI/AER: Refactor error injection fallbacks
PCI/AER: Abstract AER interrupt handling
PCI/AER: Reuse existing pcie_port_find_device() interface
PCI/AER: Use managed resource allocations
PCI: pcie: Remove redundant 'default n' from Kconfig
PCI: aardvark: Implement emulated root PCI bridge config space
PCI: mvebu: Convert to PCI emulated bridge config space
PCI: mvebu: Drop unused PCI express capability code
PCI: Introduce PCI bridge emulated config space common logic
PCI: vmd: Detach resources after stopping root bus
nvmet: Optionally use PCI P2P memory
nvmet: Introduce helper functions to allocate and free request SGLs
nvme-pci: Add support for P2P memory in requests
nvme-pci: Use PCI p2pmem subsystem to manage the CMB
IB/core: Ensure we map P2P memory correctly in rdma_rw_ctx_[init|destroy]()
block: Add PCI P2P flag for request queue
PCI/P2PDMA: Add P2P DMA driver writer's documentation
docs-rst: Add a new directory for PCI documentation
PCI/P2PDMA: Introduce configfs/sysfs enable attribute helpers
PCI/P2PDMA: Add PCI p2pmem DMA mappings to adjust the bus offset
...
After bfcb79fca1 ("PCI/ERR: Run error recovery callbacks for all affected
devices"), AER errors are always cleared by the PCI core and drivers don't
need to do it themselves.
Remove calls to pci_cleanup_aer_uncorrect_error_status() from device
driver error recovery functions.
Signed-off-by: Oza Pawandeep <poza@codeaurora.org>
[bhelgaas: changelog, remove PCI core changes, remove unused variables]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
We recently updated all our SPDX identifiers to correctly
indicate our net/ethernet/intel/* drivers were always released
and intended to be released under GPL v2, but the MODULE_LICENSE
declaration was never updated.
Fix the MODULE_LICENSE to be GPL v2, for all our drivers.
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
There have been multiple reports of crashes that look like
kernel: RIP: 0010:[<ffffffff8110303f>] timecounter_read+0xf/0x50
[...]
kernel: Call Trace:
kernel: [<ffffffffa0806b0f>] e1000e_phc_gettime+0x2f/0x60 [e1000e]
kernel: [<ffffffffa0806c5d>] e1000e_systim_overflow_work+0x1d/0x80 [e1000e]
kernel: [<ffffffff810992c5>] process_one_work+0x155/0x440
kernel: [<ffffffff81099e16>] worker_thread+0x116/0x4b0
kernel: [<ffffffff8109f422>] kthread+0xd2/0xf0
kernel: [<ffffffff8163184f>] ret_from_fork+0x3f/0x70
These can be traced back to the fact that e1000e_systim_reset() skips the
timecounter_init() call if e1000e_get_base_timinca() returns -EINVAL, which
leads to a null deref in timecounter_read().
Commit 83129b37ef ("e1000e: fix systim issues", v4.2-rc1) reworked
e1000e_get_base_timinca() in such a way that it can return -EINVAL for
e1000_pch_spt if the SYSCFI bit is not set in TSYNCRXCTL.
Some experimentation has shown that on I219 (e1000_pch_spt, "MAC: 12")
adapters, the E1000_TSYNCRXCTL_SYSCFI flag is unstable; TSYNCRXCTL reads
sometimes don't have the SYSCFI bit set. Retrying the read shortly after
finds the bit to be set. This was observed at boot (probe) but also link up
and link down.
Moreover, the phc (PTP Hardware Clock) seems to operate normally even after
reads where SYSCFI=0. Therefore, remove this register read and
unconditionally set the clock parameters.
Reported-by: Achim Mildenberger <admin@fph.physik.uni-karlsruhe.de>
Message-Id: <20180425065243.g5mqewg5irkwgwgv@f2>
Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=1075876
Fixes: 83129b37ef ("e1000e: fix systim issues")
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
After many years of having a ~30 line copyright and license header to our
source files, we are finally able to reduce that to one line with the
advent of the SPDX identifier.
Also caught a few files missing the SPDX license identifier, so fixed
them up.
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Shannon Nelson <shannon.nelson@oracle.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add the SPDX identifiers to all the Intel wired LAN driver files, as
outlined in Documentation/process/license-rules.rst.
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alex reported the following race condition:
/* link goes up... interrupt... schedule watchdog */
\ e1000_watchdog_task
\ e1000e_has_link
\ hw->mac.ops.check_for_link() === e1000e_check_for_copper_link
\ e1000e_phy_has_link_generic(..., &link)
link = true
/* link goes down... interrupt */
\ e1000_msix_other
hw->mac.get_link_status = true
/* link is up */
mac->get_link_status = false
link_active = true
/* link_active is true, wrongly, and stays so because
* get_link_status is false */
Avoid this problem by making sure that we don't set get_link_status = false
after having checked the link.
It seems this problem has been present since the introduction of e1000e.
Link: https://lkml.org/lkml/2018/1/29/338
Reported-by: Alexander Duyck <alexander.duyck@gmail.com>
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Acked-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This reverts commit 19110cfbb3.
This reverts commit 4110e02eb4.
This reverts commit d3604515c9eda464a92e8e67aae82dfe07fe3c98.
Commit 19110cfbb3 ("e1000e: Separate signaling for link check/link up")
changed what happens to the link status when there is an error which
happens after "get_link_status = false" in the copper check_for_link
callbacks. Previously, such an error would be ignored and the link
considered up. After that commit, any error implies that the link is down.
Revert commit 19110cfbb3 ("e1000e: Separate signaling for link check/link
up") and its followups. After reverting, the race condition described in
the log of commit 19110cfbb3 is reintroduced. It may still be triggered
by LSC events but this should keep the link down in case the link is
electrically unstable, as discussed. The race may no longer be
triggered by RXO events because commit 4aea7a5c5e ("e1000e: Avoid
receiver overrun interrupt bursts") restored reading icr in the Other
handler.
Link: https://lkml.org/lkml/2018/3/1/789
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Acked-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Descriptor rings were not initialized at zero when allocated
When area contained garbage data, it caused skb_over_panic in
e1000_clean_rx_irq (if data had E1000_RXD_STAT_DD bit set)
This patch makes use of dma_zalloc_coherent to make sure the
ring is memset at 0 to prevent the area from containing garbage.
Following is the signature of the panic:
IODDR0@0.0: skbuff: skb_over_panic: text:80407b20 len:64010 put:64010 head:ab46d800 data:ab46d842 tail:0xab47d24c end:0xab46df40 dev:eth0
IODDR0@0.0: BUG: failure at net/core/skbuff.c:105/skb_panic()!
IODDR0@0.0: Kernel panic - not syncing: BUG!
IODDR0@0.0:
IODDR0@0.0: Process swapper/0 (pid: 0, threadinfo=81728000, task=8173cc00 ,cpu: 0)
IODDR0@0.0: SP = <815a1c0c>
IODDR0@0.0: Stack: 00000001
IODDR0@0.0: b2d89800 815e33ac
IODDR0@0.0: ea73c040 00000001
IODDR0@0.0: 60040003 0000fa0a
IODDR0@0.0: 00000002
IODDR0@0.0:
IODDR0@0.0: 804540c0 815a1c70
IODDR0@0.0: b2744000 602ac070
IODDR0@0.0: 815a1c44 b2d89800
IODDR0@0.0: 8173cc00 815a1c08
IODDR0@0.0:
IODDR0@0.0: 00000006
IODDR0@0.0: 815a1b50 00000000
IODDR0@0.0: 80079434 00000001
IODDR0@0.0: ab46df40 b2744000
IODDR0@0.0: b2d89800
IODDR0@0.0:
IODDR0@0.0: 0000fa0a 8045745c
IODDR0@0.0: 815a1c88 0000fa0a
IODDR0@0.0: 80407b20 b2789f80
IODDR0@0.0: 00000005 80407b20
IODDR0@0.0:
IODDR0@0.0:
IODDR0@0.0: Call Trace:
IODDR0@0.0: [<804540bc>] skb_panic+0xa4/0xa8
IODDR0@0.0: [<80079430>] console_unlock+0x2f8/0x6d0
IODDR0@0.0: [<80457458>] skb_put+0xa0/0xc0
IODDR0@0.0: [<80407b1c>] e1000_clean_rx_irq+0x2dc/0x3e8
IODDR0@0.0: [<80407b1c>] e1000_clean_rx_irq+0x2dc/0x3e8
IODDR0@0.0: [<804079c8>] e1000_clean_rx_irq+0x188/0x3e8
IODDR0@0.0: [<80407b1c>] e1000_clean_rx_irq+0x2dc/0x3e8
IODDR0@0.0: [<80468b48>] __dev_kfree_skb_any+0x88/0xa8
IODDR0@0.0: [<804101ac>] e1000e_poll+0x94/0x288
IODDR0@0.0: [<8046e9d4>] net_rx_action+0x19c/0x4e8
IODDR0@0.0: ...
IODDR0@0.0: Maximum depth to print reached. Use kstack=<maximum_depth_to_print> To specify a custom value (where 0 means to display the full backtrace)
IODDR0@0.0: ---[ end Kernel panic - not syncing: BUG!
Signed-off-by: Pierre-Yves Kerbrat <pkerbrat@kalray.eu>
Signed-off-by: Marius Gligor <mgligor@kalray.eu>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Reviewed-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
When autoneg is off, the .check_for_link callback functions clear the
get_link_status flag and systematically return a "pseudo-error". This means
that the link is not detected as up until the next execution of the
e1000_watchdog_task() 2 seconds later.
Fixes: 19110cfbb3 ("e1000e: Separate signaling for link check/link up")
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Acked-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
The 82574 specification update errata 12 states that interrupts may be
missed if ICR is read while INT_ASSERTED is not set. Avoid that problem by
setting all bits related to events that can trigger the Other interrupt in
IMS.
The Other interrupt is raised for such events regardless of whether or not
they are set in IMS. However, only when they are set is the INT_ASSERTED
bit also set in ICR.
By doing this, we ensure that INT_ASSERTED is always set when we read ICR
in e1000_msix_other() and steer clear of the errata. This also ensures that
ICR will automatically be cleared on read, therefore we no longer need to
clear bits explicitly.
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Acked-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Restores the ICS write for Rx/Tx queue interrupts which was present before
commit 16ecba59bc ("e1000e: Do not read ICR in Other interrupt", v4.5-rc1)
but was not restored in commit 4aea7a5c5e
("e1000e: Avoid receiver overrun interrupt bursts", v4.15-rc1).
This re-raises the queue interrupts in case the txq or rxq bits were set in
ICR and the Other interrupt handler read and cleared ICR before the queue
interrupt was raised.
Fixes: 4aea7a5c5e ("e1000e: Avoid receiver overrun interrupt bursts")
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Acked-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This partially reverts commit 4aea7a5c5e.
We keep the fix for the first part of the problem (1) described in the log
of that commit, that is to read ICR in the other interrupt handler. We
remove the fix for the second part of the problem (2), Other interrupt
throttling.
Bursts of "Other" interrupts may once again occur during rxo (receive
overflow) traffic conditions. This is deemed acceptable in the interest of
avoiding unforeseen fallout from changes that are not strictly necessary.
As discussed, the e1000e driver should be in "maintenance mode".
Link: https://www.spinics.net/lists/netdev/msg480675.html
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Acked-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
It was reported that emulated e1000e devices in vmware esxi 6.5 Build
7526125 do not link up after commit 4aea7a5c5e ("e1000e: Avoid receiver
overrun interrupt bursts", v4.15-rc1). Some tracing shows that after
e1000e_trigger_lsc() is called, ICR reads out as 0x0 in e1000_msix_other()
on emulated e1000e devices. In comparison, on real e1000e 82574 hardware,
icr=0x80000004 (_INT_ASSERTED | _LSC) in the same situation.
Some experimentation showed that this flaw in vmware e1000e emulation can
be worked around by not setting Other in EIAC. This is how it was before
16ecba59bc ("e1000e: Do not read ICR in Other interrupt", v4.5-rc1).
Fixes: 4aea7a5c5e ("e1000e: Avoid receiver overrun interrupt bursts")
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
I personally spent a long time trying to decypher why my CPU would not
reach deeper C-states. Let's just tell the next user what's going on.
Signed-off-by: Matt Turner <matt.turner@intel.com>
Acked-by: Shannon Nelson <shannon.nelson@oracle.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
According to section 12.0.3.4.13 "Receive Descriptor Control - RXDCTL"
of the Intel® 82579 Gigabit Ethernet PHY Datasheet v2.1:
"HTHRESH should be given a non zero value when ever PTHRESH is
used."
In RXDCTL(0), PTHRESH lives at bits 5:0, and HTHREST lives at bits 13:8.
Set only bit 8 of HTHREST as is done in e1000_flush_rx_ring(). Found by
inspection.
Signed-off-by: Matt Turner <matt.turner@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
e1000e_check_for_copper_link() and e1000_check_for_copper_link_ich8lan()
are the two functions that may be assigned to mac.ops.check_for_link when
phy.media_type == e1000_media_type_copper. Commit 19110cfbb3 ("e1000e:
Separate signaling for link check/link up") changed the meaning of the
return value of check_for_link for copper media but only adjusted the first
function. This patch adjusts the second function likewise.
Reported-by: Christian Hesse <list@eworm.de>
Reported-by: Gabriel C <nix.or.die@gmail.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=198047
Fixes: 19110cfbb3 ("e1000e: Separate signaling for link check/link up")
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Tested-by: Christian Hesse <list@eworm.de>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This is a follow on to commit b10effb92e ("fix buffer overrun while the
I219 is processing DMA transactions") to address David Laights concerns
about the use of "magic" numbers. So define masks as well as add
additional code comments to give a better understanding of what needs to
be done to avoid a buffer overrun.
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Reviewed-by: Alexander H Duyck <alexander.h.duyck@intel.com>
Reviewed-by: Dima Ruinskiy <dima.ruinskiy@intel.com>
Reviewed-by: Raanan Avargil <raanan.avargil@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly. Switches test of .data field to
.function, since .data will be going away.
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Cc: intel-wired-lan@lists.osuosl.org
Cc: netdev@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
e1000e_put_txbuf() can be called from normal reclamation path as well as
when a DMA mapping failure, so we need to differentiate these two cases
when freeing SKBs to be drop monitor friendly. e1000e_tx_hwtstamp_work()
and e1000_remove() are processing TX timestamped SKBs and those should
not be accounted as drops either.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Devices that support FLAG2_DMA_BURST have different default values
for RDTR and RADV. Apply burst mode default settings only when no
explicit value was passed at module load.
The RDTR default is zero. If the module is loaded for low latency
operation with RxIntDelay=0, do not override this value with a burst
default of 32.
Move the decision to apply burst values earlier, where explicitly
initialized module variables can be distinguished from defaults.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Intel® 100/200 Series Chipset platforms reduced the round-trip
latency for the LAN Controller DMA accesses, causing in some high
performance cases a buffer overrun while the I219 LAN Connected
Device is processing the DMA transactions. I219LM and I219V devices
can fall into unrecovered Tx hang under very stressfully UDP traffic
and multiple reconnection of Ethernet cable. This Tx hang of the LAN
Controller is only recovered if the system is rebooted. Slightly slow
down DMA access by reducing the number of outstanding requests.
This workaround could have an impact on TCP traffic performance
on the platform. Disabling TSO eliminates performance loss for TCP
traffic without a noticeable impact on CPU performance.
Please, refer to I218/I219 specification update:
https://www.intel.com/content/www/us/en/embedded/products/networking/
ethernet-connection-i218-family-documentation.html
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Reviewed-by: Dima Ruinskiy <dima.ruinskiy@intel.com>
Reviewed-by: Raanan Avargil <raanan.avargil@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
When e1000e_poll() is not fast enough to keep up with incoming traffic, the
adapter (when operating in msix mode) raises the Other interrupt to signal
Receiver Overrun.
This is a double problem because 1) at the moment e1000_msix_other()
assumes that it is only called in case of Link Status Change and 2) if the
condition persists, the interrupt is repeatedly raised again in quick
succession.
Ideally we would configure the Other interrupt to not be raised in case of
receiver overrun but this doesn't seem possible on this adapter. Instead,
we handle the first part of the problem by reverting to the practice of
reading ICR in the other interrupt handler, like before commit 16ecba59bc
("e1000e: Do not read ICR in Other interrupt"). Thanks to commit
0a8047ac68 ("e1000e: Fix msi-x interrupt automask") which cleared IAME
from CTRL_EXT, reading ICR doesn't interfere with RxQ0, TxQ0 interrupts
anymore. We handle the second part of the problem by not re-enabling the
Other interrupt right away when there is overrun. Instead, we wait until
traffic subsides, napi polling mode is exited and interrupts are
re-enabled.
Reported-by: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Fixes: 16ecba59bc ("e1000e: Do not read ICR in Other interrupt")
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Lennart reported the following race condition:
\ e1000_watchdog_task
\ e1000e_has_link
\ hw->mac.ops.check_for_link() === e1000e_check_for_copper_link
/* link is up */
mac->get_link_status = false;
/* interrupt */
\ e1000_msix_other
hw->mac.get_link_status = true;
link_active = !hw->mac.get_link_status
/* link_active is false, wrongly */
This problem arises because the single flag get_link_status is used to
signal two different states: link status needs checking and link status is
down.
Avoid the problem by using the return value of .check_for_link to signal
the link status to e1000e_has_link().
Reported-by: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
All the helpers return -E1000_ERR_PHY.
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Reading e1000e_check_for_copper_link() shows that get_link_status is set to
false after link has been detected. Therefore, it stays TRUE until then.
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
In case of error from e1e_rphy(), the loop will exit early and "success"
will be set to true erroneously.
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Use setup_timer function instead of initializing timer with the
function and data fields.
Signed-off-by: Allen Pais <allen.lkml@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
i219 (8) and i219 (9) are the next LOM generations that will be available
on the next Intel Client platform (IceLake).
This patch provides the initial support for these devices
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Reviewed-by: Raanan Avargil <raanan.avargil@intel.com>
Reviewed-by: Dima Ruinskiy <dima.ruinskiy@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Check return value from call to e1e_wphy(). This value is being
checked during previous calls to function e1e_wphy() and it seems
a check was missing here.
Addresses-Coverity-ID: 1226905
Signed-off-by: Gustavo A R Silva <garsilva@embeddedor.com>
Reviewed-by: Ethan Zhao <ethan.zhao@oracle.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Replace disable_irq() which waits for threaded irq handlers with
disable_hardirq() which waits only for hardirq part.
Fixes: 3111912971 ("e1000: use disable_hardirq() for e1000_netpoll()")
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Some statistics passed to ethtool are garbage because e1000e_get_stats64()
doesn't write them, for example: tx_heartbeat_errors. This leaks kernel
memory to userspace and confuses users.
Do like ixgbe and use dev_get_stats() which first zeroes out
rtnl_link_stats64.
Fixes: 5944701df9 ("net: remove useless memset's in drivers get_stats64")
Reported-by: Stefan Priebe <s.priebe@profihost.ag>
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
The e1000e driver can only handle one Tx timestamp request at a time.
This means it is possible for an application timestamp request to be
ignored.
There is no easy way for an administrator to determine if this occurred.
Add a new statistic which tracks this, tx_hwtstamp_skipped.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
The e1000e driver and related hardware has a limitation on Tx PTP
packets which requires we limit to timestamping a single packet at once.
We do this by verifying that we never request a new Tx timestamp while
we still have a tx_hwtstamp_skb pointer.
Unfortunately the driver suffers from a race condition around this. The
tx_hwtstamp_skb pointer is not set to NULL until after skb_tstamp_tx()
is called. This function notifies the stack and applications of a new
timestamp. Even a well behaved application that only sends a new request
when the first one is finished might be woken up and possibly send
a packet before we can free the timestamp in the driver again. The
result is that we needlessly ignore some Tx timestamp requests in this
corner case.
Fix this by assigning the tx_hwtstamp_skb pointer prior to calling
skb_tstamp_tx() and use a temporary pointer to hold the timestamped skb
until that function finishes. This ensures that the application is not
woken up until the driver is ready to begin timestamping a new packet.
This ensures that well behaved applications do not accidentally race
with condition to skip Tx timestamps. Obviously an application which
sends multiple Tx timestamp requests at once will still only timestamp
one packet at a time. Unfortunately there is nothing we can do about
this.
Reported-by: David Mirabito <davidm@metamako.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Some drivers were calling the skb_tx_timestamp() function only when
a hardware timestamp was not requested. Now that applications can use
the SOF_TIMESTAMPING_OPT_TX_SWHW option to request both software and
hardware timestamps, the drivers need to be modified to unconditionally
call skb_tx_timestamp().
CC: Richard Cochran <richardcochran@gmail.com>
CC: Willem de Bruijn <willemb@google.com>
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Include HWTSTAMP_FILTER_NTP_ALL in net_hwtstamp_validate() as a valid
filter and update drivers which can timestamp all packets, or which
explicitly list unsupported filters instead of using a default case, to
handle the filter.
CC: Richard Cochran <richardcochran@gmail.com>
CC: Willem de Bruijn <willemb@google.com>
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add support for 38.4MHz frequency is required for PTP
on CannonLake. SYSTIM frequency adjustment attributes for TIMINCA are
get/set dependent on the hardware clock frequency for a different
types of adapters. 38.4MHz frequency supported by CannonLake
and active once time synchronisation mechanism was enabled
Changed abbreviation from Hz to HZ to be compliant checkpatch code style
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Reviewed-by: Raanan Avargil <raanan.avargil@intel.com>
Reviewed-by: Dima Ruinskiy <dima.ruinskiy@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
The propagation of CannonLake mac type to driver functionality
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Reviewed-by: Raanan Avargil <raanan.avargil@intel.com>
Reviewed-by: Dima Ruinskiy <dima.ruinskiy@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
i219 (6) and i219 (7) are the next LOM generations that will be
available on the nextIntel Client platform (CannonLake)
This patch provides the initial support for these devices
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Reviewed-by: Raanan Avargil <raanan.avargil@intel.com>
Reviewed-by: Dima Ruinskiy <dima.ruinskiy@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
I've got reports that the Intel I-218V NIC in Intel NUC5i5RYH systems used
as a PTP slave experiences random ~10 hour clock jumps, which are resolved
if the same workaround for the 82574 and 82583 is employed, so set the
appropriate flag2 in e1000_pch_lpt_info too.
Reported-by: Rupesh Patel <rupatel@redhat.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
After an upgrade to Linux kernel v4.x the hardware timestamps of the
82579 Gigabit Ethernet Controller are different than expected.
The values that are being read are almost four times as big as before
the kernel upgrade.
The difference is that after the upgrade the driver sets the clock
frequency to 25MHz, where before the upgrade it was set to 96MHz. Intel
confirmed that the correct frequency for this network adapter is 96MHz.
Signed-off-by: Bernd Faust <berndfaust@gmail.com>
Acked-by: Sasha Neftin <sasha.neftin@intel.com>
Acked-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Mostly simple cases of overlapping changes (adding code nearby,
a function whose name changes, for example).
Signed-off-by: David S. Miller <davem@davemloft.net>
This reverts commit 7e54d9d063.
After additional regression testing, several users are experiencing
kernel panics during shutdown on e1000e devices. Reverting this
change resolves the issue.
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The ethtool API {get|set}_settings is deprecated.
We move this driver to new API {get|set}_link_ksettings.
As I don't have the hardware, I'd be very pleased if
someone may test this patch.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
The network stack no longer uses the last_rx member of struct net_device
since the bonding driver switched to use its own private last_rx in
commit 9f24273837 ("bonding: use last_arp_rx in slave_last_rx()").
However, some drivers still (ab)use the field for their own purposes and
some driver just update it without actually using it.
Previously, there was an accompanying comment for the last_rx member
added in commit 4dc89133f4 ("net: add a comment on netdev->last_rx")
which asked drivers not to update is, unless really needed. However,
this commend was removed in commit f8ff080dac ("bonding: remove
useless updating of slave->dev->last_rx"), so some drivers added later
on still did update last_rx.
Remove all usage of last_rx and switch three drivers (sky2, atp and
smc91c92_cs) which actually read and write it to use their own private
copy in netdev_priv.
Compile-tested with allyesconfig and allmodconfig on x86 and arm.
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Jay Vosburgh <j.vosburgh@gmail.com>
Cc: Veaceslav Falico <vfalico@gmail.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Cc: Mirko Lindner <mlindner@marvell.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In dev_get_stats() the statistic structure storage has already been
zeroed. Therefore network drivers do not need to call memset() again.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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>
During systemd reboot sequence network driver interface is shutdown
by e1000_close. The PCI driver interface is shut by e1000_shutdown.
The e1000_shutdown checks for netif_running status, if still up it
brings down driver. But it disables msi outside of this if statement,
regardless of netif status. All this is OK when e1000_close happens
after shutdown. However, by default, everything in systemd is done
in parallel. This creates a conditions where e1000_shutdown is called
after e1000_close, therefore hitting BUG_ON assert in free_msi_irqs.
CC: xe-kernel@external.cisco.com
Signed-off-by: khalidm <khalidm@cisco.com>
Signed-off-by: David Singleton <davsingl@cisco.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
There is no point in having an extra type for extra confusion. u64 is
unambiguous.
Conversion was done with the following coccinelle script:
@rem@
@@
-typedef u64 cycle_t;
@fix@
typedef cycle_t;
@@
-cycle_t
+u64
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: John Stultz <john.stultz@linaro.org>
In commit 02cea39586 ("genirq: Provide disable_hardirq()")
Peter introduced disable_hardirq() for netpoll, but it is forgotten
to use it for e1000.
This patch changes disable_irq() to disable_hardirq() for e1000.
Reported-by: Dave Jones <davej@codemonkey.org.uk>
Suggested-by: Sabrina Dubroca <sd@queasysnail.net>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
e100: min_mtu 68, max_mtu 1500
- remove e100_change_mtu entirely, is identical to old eth_change_mtu,
and no longer serves a purpose. No need to set min_mtu or max_mtu
explicitly, as ether_setup() will already set them to 68 and 1500.
e1000: min_mtu 46, max_mtu 16110
e1000e: min_mtu 68, max_mtu varies based on adapter
fm10k: min_mtu 68, max_mtu 15342
- remove fm10k_change_mtu entirely, does nothing now
i40e: min_mtu 68, max_mtu 9706
i40evf: min_mtu 68, max_mtu 9706
igb: min_mtu 68, max_mtu 9216
- There are two different "max" frame sizes claimed and both checked in
the driver, the larger value wasn't relevant though, so I've set max_mtu
to the smaller of the two values here to retain identical behavior.
igbvf: min_mtu 68, max_mtu 9216
- Same issue as igb duplicated
ixgb: min_mtu 68, max_mtu 16114
- Also remove pointless old == new check, as that's done in dev_set_mtu
ixgbe: min_mtu 68, max_mtu 9710
ixgbevf: min_mtu 68, max_mtu dependent on hardware/firmware
- Some hw can only handle up to max_mtu 1504 on a vf, others 9710
CC: netdev@vger.kernel.org
CC: intel-wired-lan@lists.osuosl.org
CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Drivers must be ready to accept NULL from ptp_clock_register() if the
PTP clock subsystem is configured out.
This patch documents that and ensures that all drivers cope well
with a NULL return.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Reviewed-by: Eugenia Emantayev <eugenia@mellanox.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
I've got reports that the Intel I-218V NIC in Intel NUC5i5RYH systems used
as a PTP slave experiences random ~10 hour clock jumps, which are resolved
if the same workaround for the 82574 and 82583 is employed, so set the
appropriate flag2 in e1000_pch_lpt_info too.
Reported-by: Rupesh Patel <rupatel@redhat.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This is prepatory work for an expanding list of adapter families that have
occasional ~10 hour clock jumps when being used for PTP. Factor out the
sanitization function and convert to using a feature (bug) flag, per
suggestion from Jesse Brandeburg.
Littering functional code with device-specific checks is much messier than
simply checking a flag, and having device-specific init set flags as needed.
There are probably a number of other cases in the e1000e code that
could/should be converted similarly.
Suggested-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Conflicts:
drivers/net/ethernet/mellanox/mlx5/core/en.h
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
drivers/net/usb/r8152.c
All three conflicts were overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Jeff Kirsher says:
====================
Intel Wired LAN Driver Updates 2016-06-29
This series contains updates and fixes to e1000e, igb, ixgbe and fm10k. A
true smorgasbord of changes.
Jake cleans up some obscurity by not using the BIT() macro on bitshift
operation and also fixed the calculated index when looping through the
indir array. Fixes the issue with igb's workqueue item for overflow
check from causing a surprise remove event. The ptp_flags variable is
added to simplify the work of writing several complex MAC type checks
in the PTP code while fixing the workqueue.
Alex Duyck fixes the receive buffers alignment which should not be L1
cache aligned, but to 512 bytes instead.
Denys Vlasenko prevents a division by zero which was reported under
VMWare for e1000e.
Amritha fixes an issue where filters in a child hash table must be
cleared from the hardware before delete the filter links in ixgbe.
Bhaktipriya Shridhar simply replaces the deprecated create_workqueue()
with alloc_workqueue() for fm10k.
Tony corrects ixgbe ethtool reporting to show x550 supports hardware
timestamping of all packets.
Emil fixes an issue where MAC-VLANs on the VF fail to pass traffic due
to spoofed packets.
Andrew Lunn increases performance on some systems where syncing a buffer
for DMA is expensive. So rather than sync the whole 2K receive buffer,
only synchronize the length of the frame.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Users report that under VMWare, er32(TIMINCA) returns zero.
This causes division by zero at init time as follows:
==> incvalue = er32(TIMINCA) & E1000_TIMINCA_INCVALUE_MASK;
for (i = 0; i < E1000_MAX_82574_SYSTIM_REREADS; i++) {
/* latch SYSTIMH on read of SYSTIML */
systim_next = (cycle_t)er32(SYSTIML);
systim_next |= (cycle_t)er32(SYSTIMH) << 32;
time_delta = systim_next - systim;
temp = time_delta;
====> rem = do_div(temp, incvalue);
This change makes kernel survive this, and users report that
NIC does work after this change.
Since on real hardware incvalue is never zero, this should not affect
real hardware use case.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
The bit in the e1000 driver that mentions explicitly that the hardware
has no support for separate RX/TX VLAN accel toggling rings true for
e1000e as well, and thus both NETIF_F_HW_VLAN_CTAG_RX and
NETIF_F_HW_VLAN_CTAG_TX need to be kept in sync.
Revert a portion of commit 889ad45666 ("e1000e: keep VLAN interfaces
functional after rxvlan off") since keeping the bits in sync resolves
the original issue.
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
I've got a bug report about an e1000e interface, where a VLAN interface is
set up on top of it:
$ ip link add link ens1f0 name ens1f0.99 type vlan id 99
$ ip link set ens1f0 up
$ ip link set ens1f0.99 up
$ ip addr add 192.168.99.92 dev ens1f0.99
At this point, I can ping another host on vlan 99, ip 192.168.99.91.
However, if I do the following:
$ ethtool -K ens1f0 rxvlan off
Then no traffic passes on ens1f0.99. It comes back if I toggle rxvlan on
again. I'm not sure if this is actually intended behavior, or if there's a
lack of software VLAN stripping fallback, or what, but things continue to
work if I simply don't call e1000e_vlan_strip_disable() if there are
active VLANs (plagiarizing a function from the e1000 driver here) on the
interface.
Also slipped a related-ish fix to the kerneldoc text for
e1000e_vlan_strip_disable here...
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Now that we do have pci_request_mem_regions() and pci_release_mem_regions()
at hand, use it in the Intel ethernet drivers.
Suggested-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
CC: David S. Miller <davem@davemloft.net>
The e1000e_config_hwtstamp function was incorrectly resetting the SYSTIM
registers every time the ioctl was being run. If you happened to be
running ptp4l and lost the PTP connect (removing cable, or blocking the
UDP traffic for example), then ptp4l will eventually perform a restart
which involves re-requesting timestamp settings. In e1000e this has the
unfortunate and incorrect result of resetting SYSTIME to the kernel
time. Since kernel time is usually in UTC, and PTP time is in TAI, this
results in the leap second being re-applied.
Fix this by extracting the SYSTIME reset out into its own function,
e1000e_ptp_reset, which we call during reset to restore the hardware
registers. This function will (a) restart the timecounter based on the
new system time, (b) restore the previous PPB setting, and (c) restore
the previous hwtstamp settings.
In order to perform (b), I had to modify the adjfreq ptp function
pointer to store the old delta each time it is called. This also has the
side effect of restoring the correct base timinca register correctly.
The driver does not need to explicitly zero the ptp_delta variable since
the entire adapter structure comes zero-initialized.
Reported-by: Brian Walsh <brian@walsh.ws>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Brian Walsh <brian@walsh.ws>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
The E1000_ICH_NVM_SIG_MASK value is shifted, out to the 31st bit, which
is the signed bit for signed constants. Mark these values as unsigned to
prevent compiler warnings and issues on platforms which a different
signed bit implementation.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This prevents signed bitshift issues when the shift would overwrite the
signed bit, and prevents making this mistake in the future when copying
and modifying code.
Use GENMASK or the unsigned postfix for cases which aren't suitable for
BIT() macro.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
SYSTIMH:SYSTIML registers are incremented by 24-bit value TIMINCA[23..0]
er32(SYSTIML) are probably moderately expensive (they are pci bus reads).
Can we avoid one of them? Yes, we can.
If the SYSTIML value we see is smaller than 0xff000000, the overflow
into SYSTIMH would require at least two increments.
We do two reads, er32(SYSTIML) and er32(SYSTIMH), in this order.
Even if one increment happens between them, the overflow into SYSTIMH
is impossible, and we can avoid doing another er32(SYSTIML) read
and overflow check.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
If two consecutive reads of the counter are the same, it is also
not an overflow. "systimel_1 < systimel_2" should be
"systimel_1 <= systimel_2".
Before the patch, we could perform an *erroneous* correction:
Let's say that systimel_1 == systimel_2 == 0xffffffff.
"systimel_1 < systimel_2" is false, we think it's an overflow,
we read "systimeh = er32(SYSTIMH)" which meanwhile had incremented,
and use "(systimeh << 32) + systimel_2" value which is 2^32 too large.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: intel-wired-lan@lists.osuosl.org
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
"incvalue" variable holds a result of "er32(TIMINCA) &
E1000_TIMINCA_INCVALUE_MASK" and used in "do_div(temp, incvalue)"
as a divisor.
Thus, "u64 incvalue" declaration is probably a mistake.
Even though it seems to be a harmless one, let's fix it.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Fixed the file to use a consistent ret_val for return value checking.
Signed-off-by: Brian Walsh <brian@walsh.ws>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This patch fixes the issues for disabling auto-negotiation and forcing
speed and duplex settings for the non-copper media.
For non-copper media, e1000_get_settings should return ETH_TP_MDI_INVALID for
eth_tp_mdix_ctrl instead of ETH_TP_MDI_AUTO so subsequent e1000_set_settings
call would not fail with -EOPNOTSUPP.
e1000_set_spd_dplx should not automatically turn autoneg back on for forced
1000 Mbps full duplex settings for non-copper media.
Cc: xe-kernel@external.cisco.com
Cc: Daniel Walker <dwalker@fifo99.com>
Signed-off-by: Steve Shih <sshih@cisco.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
a trans_start struct member exists twice:
- in struct net_device (legacy)
- in struct netdev_queue
Instead of open-coding dev->trans_start usage to obtain the current
trans_start value, use dev_trans_start() instead.
This is not exactly the same, as dev_trans_start also considers
the trans_start values of the netdev queues owned by the device
and provides the most recent one.
For legacy devices this doesn't matter as dev_trans_start can cope
with netdev trans_start values of 0 (they are ignored).
This is a prerequisite to eventual removal of dev->trans_start.
Cc: linux-rdma@vger.kernel.org
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Calling dev_close() causes IFF_UP to be cleared which will remove the
interfaces routes and some addresses. That's probably not what the user
intended when running the offline selftest. Besides this does not happen
if the interface is brought down before the test, so the current
behaviour is inconsistent.
Instead call the net_device_ops ndo_stop function directly and avoid
touching IFF_UP at all.
Signed-off-by: Stefan Assmann <sassmann@kpanic.de>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Pull networking updates from David Miller:
"Highlights:
1) Support more Realtek wireless chips, from Jes Sorenson.
2) New BPF types for per-cpu hash and arrap maps, from Alexei
Starovoitov.
3) Make several TCP sysctls per-namespace, from Nikolay Borisov.
4) Allow the use of SO_REUSEPORT in order to do per-thread processing
of incoming TCP/UDP connections. The muxing can be done using a
BPF program which hashes the incoming packet. From Craig Gallek.
5) Add a multiplexer for TCP streams, to provide a messaged based
interface. BPF programs can be used to determine the message
boundaries. From Tom Herbert.
6) Add 802.1AE MACSEC support, from Sabrina Dubroca.
7) Avoid factorial complexity when taking down an inetdev interface
with lots of configured addresses. We were doing things like
traversing the entire address less for each address removed, and
flushing the entire netfilter conntrack table for every address as
well.
8) Add and use SKB bulk free infrastructure, from Jesper Brouer.
9) Allow offloading u32 classifiers to hardware, and implement for
ixgbe, from John Fastabend.
10) Allow configuring IRQ coalescing parameters on a per-queue basis,
from Kan Liang.
11) Extend ethtool so that larger link mode masks can be supported.
From David Decotigny.
12) Introduce devlink, which can be used to configure port link types
(ethernet vs Infiniband, etc.), port splitting, and switch device
level attributes as a whole. From Jiri Pirko.
13) Hardware offload support for flower classifiers, from Amir Vadai.
14) Add "Local Checksum Offload". Basically, for a tunneled packet
the checksum of the outer header is 'constant' (because with the
checksum field filled into the inner protocol header, the payload
of the outer frame checksums to 'zero'), and we can take advantage
of that in various ways. From Edward Cree"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1548 commits)
bonding: fix bond_get_stats()
net: bcmgenet: fix dma api length mismatch
net/mlx4_core: Fix backward compatibility on VFs
phy: mdio-thunder: Fix some Kconfig typos
lan78xx: add ndo_get_stats64
lan78xx: handle statistics counter rollover
RDS: TCP: Remove unused constant
RDS: TCP: Add sysctl tunables for sndbuf/rcvbuf on rds-tcp socket
net: smc911x: convert pxa dma to dmaengine
team: remove duplicate set of flag IFF_MULTICAST
bonding: remove duplicate set of flag IFF_MULTICAST
net: fix a comment typo
ethernet: micrel: fix some error codes
ip_tunnels, bpf: define IP_TUNNEL_OPTS_MAX and use it
bpf, dst: add and use dst_tclassid helper
bpf: make skb->tc_classid also readable
net: mvneta: bm: clarify dependencies
cls_bpf: reset class and reuse major in da
ldmvsw: Checkpatch sunvnet.c and sunvnet_common.c
ldmvsw: Add ldmvsw.c driver code
...
Modern Intel systems supports cross timestamping of the network device
clock and Always Running Timer (ART) in hardware. This allows the
device time and system time to be precisely correlated. The timestamp
pair is returned through e1000e_phc_get_syncdevicetime() used by
get_system_device_crosststamp(). The hardware cross-timestamp result
is made available to applications through the PTP_SYS_OFFSET_PRECISE
ioctl which calls e1000e_phc_getcrosststamp().
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Cc: kevin.b.stanton@intel.com
Cc: kevin.j.clarke@intel.com
Cc: hpa@zytor.com
Cc: jeffrey.t.kirsher@intel.com
Cc: netdev@vger.kernel.org
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Christopher S. Hall <christopher.s.hall@intel.com>
[jstultz: Reworked to use new interface, commit message tweaks]
Signed-off-by: John Stultz <john.stultz@linaro.org>
i219 (4) and i219 (5) are the next LOM generations that will be
available on the next Intel platform (KabeLake).
This patch provides the initial support for the devices.
Signed-off-by: Raanan Avargil <raanan.avargil@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
There have been bugs caused by HW ULP configuration settings not being
properly cleared after cable connect in V-Pro capable systems.
This caused HW to get out of sync occasionally.
The fix ensures that ULP settings are cleared in HW after
LAN cable re-connect.
Signed-off-by: Raanan Avargil <raanan.avargil@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Based on feedback from HW team, the configured value of the internal PHY
HW FIFO pointer gap was incorrect for non-gig speeds.
This patch provides the correct configuration.
Signed-off-by: Raanan Avargil <raanan.avargil@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Several packet loss issues were reported for which the root cause for
them was an incorrect configuration of internal HW PHY clock gating
mechanism by SW.
This patch provides the correct mechanism.
Signed-off-by: Raanan Avargil <raanan.avargil@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Due to system level changes introduced in Skylake, ULP exit takes
significantly longer to occur. Therefore, driver must wait longer for.
Signed-off-by: Raanan Avargil <raanan.avargil@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Since the introduction of 82574 support in e1000e, the driver has worked
on the assumption that msi-x interrupt generation is automatically
disabled after each irq. As it turns out, this is not the case.
Currently, rx interrupts can fire multiple times before and during napi
processing. This can be a problem for users because frames that arrive
in a certain window (after adapter->clean_rx() but before
napi_complete_done() has cleared NAPI_STATE_SCHED) generate an interrupt
which does not lead to napi_schedule(). These frames sit in the rx queue
until another frame arrives (a tcp retransmit for example).
While the EIAC and CTRL_EXT registers are properly configured for irq
automask, the modification of IAM in e1000_configure_msix() is what
prevents automask from working as intended.
This patch removes that erroneous write and fixes interrupt rearming for
tx interrupts. It also clears IAME from CTRL_EXT. This is not strictly
necessary for operation of the driver but it is to avoid disruption from
potential programs that access the registers directly, like `ethregs -c`.
Reported-by: Frank Steiner <steiner-reg@bio.ifi.lmu.de>
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
In msi-x mode, there is no handler for the lsc interrupt so there is no
point in writing that to ics now that we always assume Other interrupts
are caused by lsc.
Reviewed-by: Jasna Hodzic <jhodzic@ucdavis.edu>
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Removes the ICR read in the other interrupt handler, uses EIAC to
autoclear the Other bit from ICR and IMS. This allows us to avoid
interference with Rx and Tx interrupts in the Other interrupt handler.
The information read from ICR is not needed. IMS is configured such that
the only interrupt cause that can trigger the Other interrupt is Link
Status Change.
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
msi-x interrupts are not shared so there's no need to check if the
interrupt was really from this adapter.
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
The function e1000e_up always returns 0. As such we can convert it to a
void and just ignore the results. This allows us to drop some code in a
couple spots as we no longer need to worry about non-zero return values.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
i219-LM (3) is a LOM that will be available on systems with the
Lewisburg Platform Controller Hub (PCH) chipset from Intel.
This patch provides the initial support for the device.
Signed-off-by: Raanan Avargil <raanan.avargil@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Due to timing changes to the ME firmware in Skylake, this timer
needs to be increased to 300ms.
Signed-off-by: Raanan Avargil <raanan.avargil@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This patch fixes possible division by zero in receive
interrupt handler when working without adaptive interrupt
moderation.
The adaptive interrupt moderation mechanism is typically
disabled on jumbo MTUs.
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Leonid Bloch <leonid@daynix.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
The local variable 'ret' doesn't serve much purpose so we might as well
clean it up.
Signed-off-by: Jean Sacren <sakiwit@gmail.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
As per Eric Dumazet's previous patches:
(see commit (24d2e4a507) - tg3: use napi_complete_done())
Quoting verbatim:
Using napi_complete_done() instead of napi_complete() allows
us to use /sys/class/net/ethX/gro_flush_timeout
GRO layer can aggregate more packets if the flush is delayed a bit,
without having to set too big coalescing parameters that impact
latencies.
</end quote>
Tested
configuration: low latency via ethtool -C ethx adaptive-rx off
rx-usecs 10 adaptive-tx off tx-usecs 15
workload: streaming rx using netperf TCP_MAERTS
igb:
MIGRATED TCP MAERTS TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.0.1 () port 0 AF_INET : demo
...
Interim result: 941.48 10^6bits/s over 1.000 seconds ending at 1440193171.589
Alignment Offset Bytes Bytes Recvs Bytes Sends
Local Remote Local Remote Xfered Per Per
Recv Send Recv Send Recv (avg) Send (avg)
8 8 0 0 1176930056 1475.36 797726 16384.00 71905
MIGRATED TCP MAERTS TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.0.1 () port 0 AF_INET : demo
...
Interim result: 941.49 10^6bits/s over 0.997 seconds ending at 1440193142.763
Alignment Offset Bytes Bytes Recvs Bytes Sends
Local Remote Local Remote Xfered Per Per
Recv Send Recv Send Recv (avg) Send (avg)
8 8 0 0 1175182320 50476.00 23282 16384.00 71816
i40e:
Hard to test because the traffic is incoming so fast (24Gb/s) that GRO
always receives 87kB, even at the highest interrupt rate.
Other drivers were only compile tested.
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Many drivers initialize uselessly n_priv_flags, n_stats, testinfo_len,
eedump_len & regdump_len fields in their .get_drvinfo() ethtool op.
It's not necessary as these fields is filled in ethtool_get_drvinfo().
v2: removed unused variable
v3: removed another unused variable
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
