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The i210 device can produce an interrupt on the full second. This
patch allows using this interrupt to generate an internal PPS event
for adjusting the kernel system time.
Signed-off-by: Richard Cochran <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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The time sync related interrupt registers may be manipulated from
different contexts. This patch protects the registers from being
asynchronously changed by the reset function.
Also, the patch removes a misleading comment. The reset function
is disabling a bunch of functions, not enabling them.
Signed-off-by: Richard Cochran <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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The code that handles the time sync interrupt is repeated in three
different places. This patch refactors the identical code blocks into
a single helper function.
Signed-off-by: Richard Cochran <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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This patch cleans up the page reuse code getting it into a state where all
the workarounds needed are in place as well as cleaning up a few minor
oversights such as using __free_pages instead of put_page to drop a locally
allocated page.
It also cleans up how we clear the descriptor status bits. Previously they
were zeroed as a part of clearing the hdr_addr. However the hdr_addr is a
64 bit field and 64 bit writes can be a bit more expensive on on 32 bit
systems. Since we are no longer using the header split feature the upper
32 bits of the address no longer need to be cleared. As a result we can
just clear the status bits and leave the length and VLAN fields as-is which
should provide more information in debugging.
Signed-off-by: Alexander Duyck <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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The same macros are used for rx as well. So rename it.
Signed-off-by: Jiri Pirko <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Signed-off-by: Richard Cochran <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Signed-off-by: David S. Miller <[email protected]>
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Remove a FIXME comment that was missed in a commit on 1/2007.
Signed-off-by: Todd Fujinaka <[email protected]>
Reported-by: nick <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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This patch changes the driver to use the new and improved method
for adjusting the offset of a timecounter.
Signed-off-by: Richard Cochran <[email protected]>
Acked-by: Jeff Kirsher <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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The timecounter code has almost nothing to do with the clocksource
code. Let it live in its own file. This will help isolate the
timecounter users from the clocksource users in the source tree.
Signed-off-by: Richard Cochran <[email protected]>
Acked-by: Jeff Kirsher <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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This change makes it so that dma_rmb is used when reading the Rx
descriptor. The advantage of dma_rmb is that it allows for a much
lower cost barrier on x86, powerpc, arm, and arm64 architectures than a
traditional memory barrier when dealing with reads that only have to
synchronize to coherent memory.
In addition I have updated the code so that it just checks to see if any
bits have been set instead of just the DD bit since the DD bit will always
be set as a part of a descriptor write-back so we just need to check for a
non-zero value being present at that memory location rather than just
checking for any specific bit. This allows the code itself to appear much
cleaner and allows the compiler more room to optimize.
Cc: Matthew Vick <[email protected]>
Cc: Don Skidmore <[email protected]>
Acked-by: Jeff Kirsher <[email protected]>
Signed-off-by: Alexander Duyck <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Pull networking updates from David Miller:
1) New offloading infrastructure and example 'rocker' driver for
offloading of switching and routing to hardware.
This work was done by a large group of dedicated individuals, not
limited to: Scott Feldman, Jiri Pirko, Thomas Graf, John Fastabend,
Jamal Hadi Salim, Andy Gospodarek, Florian Fainelli, Roopa Prabhu
2) Start making the networking operate on IOV iterators instead of
modifying iov objects in-situ during transfers. Thanks to Al Viro
and Herbert Xu.
3) A set of new netlink interfaces for the TIPC stack, from Richard
Alpe.
4) Remove unnecessary looping during ipv6 routing lookups, from Martin
KaFai Lau.
5) Add PAUSE frame generation support to gianfar driver, from Matei
Pavaluca.
6) Allow for larger reordering levels in TCP, which are easily
achievable in the real world right now, from Eric Dumazet.
7) Add a variable of napi_schedule that doesn't need to disable cpu
interrupts, from Eric Dumazet.
8) Use a doubly linked list to optimize neigh_parms_release(), from
Nicolas Dichtel.
9) Various enhancements to the kernel BPF verifier, and allow eBPF
programs to actually be attached to sockets. From Alexei
Starovoitov.
10) Support TSO/LSO in sunvnet driver, from David L Stevens.
11) Allow controlling ECN usage via routing metrics, from Florian
Westphal.
12) Remote checksum offload, from Tom Herbert.
13) Add split-header receive, BQL, and xmit_more support to amd-xgbe
driver, from Thomas Lendacky.
14) Add MPLS support to openvswitch, from Simon Horman.
15) Support wildcard tunnel endpoints in ipv6 tunnels, from Steffen
Klassert.
16) Do gro flushes on a per-device basis using a timer, from Eric
Dumazet. This tries to resolve the conflicting goals between the
desired handling of bulk vs. RPC-like traffic.
17) Allow userspace to ask for the CPU upon what a packet was
received/steered, via SO_INCOMING_CPU. From Eric Dumazet.
18) Limit GSO packets to half the current congestion window, from Eric
Dumazet.
19) Add a generic helper so that all drivers set their RSS keys in a
consistent way, from Eric Dumazet.
20) Add xmit_more support to enic driver, from Govindarajulu
Varadarajan.
21) Add VLAN packet scheduler action, from Jiri Pirko.
22) Support configurable RSS hash functions via ethtool, from Eyal
Perry.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1820 commits)
Fix race condition between vxlan_sock_add and vxlan_sock_release
net/macb: fix compilation warning for print_hex_dump() called with skb->mac_header
net/mlx4: Add support for A0 steering
net/mlx4: Refactor QUERY_PORT
net/mlx4_core: Add explicit error message when rule doesn't meet configuration
net/mlx4: Add A0 hybrid steering
net/mlx4: Add mlx4_bitmap zone allocator
net/mlx4: Add a check if there are too many reserved QPs
net/mlx4: Change QP allocation scheme
net/mlx4_core: Use tasklet for user-space CQ completion events
net/mlx4_core: Mask out host side virtualization features for guests
net/mlx4_en: Set csum level for encapsulated packets
be2net: Export tunnel offloads only when a VxLAN tunnel is created
gianfar: Fix dma check map error when DMA_API_DEBUG is enabled
cxgb4/csiostor: Don't use MASTER_MUST for fw_hello call
net: fec: only enable mdio interrupt before phy device link up
net: fec: clear all interrupt events to support i.MX6SX
net: fec: reset fep link status in suspend function
net: sock: fix access via invalid file descriptor
net: introduce helper macro for_each_cmsghdr
...
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This change replaces calls to netdev_alloc_skb_ip_align with
napi_alloc_skb. The advantage of napi_alloc_skb is currently the fact that
the page allocation doesn't make use of any irq disable calls.
There are few spots where I couldn't replace the calls as the buffer
allocation routine is called as a part of init which is outside of the
softirq context.
Cc: Jeff Kirsher <[email protected]>
Signed-off-by: Alexander Duyck <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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This patch extends the set/get_rxfh ethtool-options for getting or
setting the RSS hash function.
It modifies drivers implementation of set/get_rxfh accordingly.
This change also delegates the responsibility of checking whether a
modification to a certain RX flow hash parameter is supported to the
driver implementation of set_rxfh.
User-kernel API is done through the new hfunc bitmask field in the
ethtool_rxfh struct. A bit set in the hfunc field is corresponding to an
index in the new string-set ETH_SS_RSS_HASH_FUNCS.
Got approval from most of the relevant driver maintainers that their
driver is using Toeplitz, and for the few that didn't answered, also
assumed it is Toeplitz.
Cc: Tom Lendacky <[email protected]>
Cc: Ariel Elior <[email protected]>
Cc: Prashant Sreedharan <[email protected]>
Cc: Michael Chan <[email protected]>
Cc: Hariprasad S <[email protected]>
Cc: Sathya Perla <[email protected]>
Cc: Subbu Seetharaman <[email protected]>
Cc: Ajit Khaparde <[email protected]>
Cc: Jeff Kirsher <[email protected]>
Cc: Jesse Brandeburg <[email protected]>
Cc: Bruce Allan <[email protected]>
Cc: Carolyn Wyborny <[email protected]>
Cc: Don Skidmore <[email protected]>
Cc: Greg Rose <[email protected]>
Cc: Matthew Vick <[email protected]>
Cc: John Ronciak <[email protected]>
Cc: Mitch Williams <[email protected]>
Cc: Amir Vadai <[email protected]>
Cc: Solarflare linux maintainers <[email protected]>
Cc: Shradha Shah <[email protected]>
Cc: Shreyas Bhatewara <[email protected]>
Cc: "VMware, Inc." <[email protected]>
Cc: Ben Hutchings <[email protected]>
Signed-off-by: Eyal Perry <[email protected]>
Signed-off-by: Amir Vadai <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Update the Intel Ethernet drivers to use eth_skb_pad() and skb_put_padto
instead of doing their own implementations of the function.
Also this cleans up two other spots where skb_pad was called but the length
and tail pointers were being manipulated directly instead of just having
the padding length added via __skb_put.
Cc: Jeff Kirsher <[email protected]>
Signed-off-by: Alexander Duyck <[email protected]>
Acked-by: Jeff Kirsher <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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* pm-runtime: (25 commits)
i2c-omap / PM: Drop CONFIG_PM_RUNTIME from i2c-omap.c
dmaengine / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
drivers: sh / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
e1000e / igb / PM: Eliminate CONFIG_PM_RUNTIME
MMC / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
MFD / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
misc / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
media / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
input / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
iio / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
hsi / OMAP / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
i2c-hid / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
drm / exynos / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
gpio / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
hwrandom / exynos / PM: Use CONFIG_PM in #ifdef
block / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
USB / PM: Drop CONFIG_PM_RUNTIME from the USB core
PM: Merge the SET*_RUNTIME_PM_OPS() macros
PM / Kconfig: Do not select PM directly from Kconfig files
PCI / PM: Drop CONFIG_PM_RUNTIME from the PCI core
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After commit b2b49ccbdd54 (PM: Kconfig: Set PM_RUNTIME if PM_SLEEP is
selected) PM_RUNTIME is always set if PM is set, so #ifdef blocks
depending on CONFIG_PM_RUNTIME within #ifdef blocks depending on
CONFIG_PM may be dropped now.
Do that in the e1000e and igb network drivers.
Signed-off-by: Rafael J. Wysocki <[email protected]>
Acked-by: Jeff Kirsher <[email protected]>
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This patch adds some checks in order to prevent panic's on surprise
removal of devices during S0, S3, S4. Without this patch, Thunderbolt
type device removal will panic the system.
Signed-off-by: Yanir Lubetkin <[email protected]>
Signed-off-by: Carolyn Wyborny <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Use of well known RSS key increases attack surface.
Switch to a random one, using generic helper so that all
ports share a common key.
Signed-off-by: Eric Dumazet <[email protected]>
Cc: Jeff Kirsher <[email protected]>
Cc: Jesse Brandeburg <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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The Intel drivers were pretty much just using the plain vanilla GFP flags
in their calls to __skb_alloc_page so this change makes it so that they use
dev_alloc_page which just uses GFP_ATOMIC for the gfp_flags value.
Cc: Jeff Kirsher <[email protected]>
Cc: Matthew Vick <[email protected]>
Cc: Don Skidmore <[email protected]>
Signed-off-by: Alexander Duyck <[email protected]>
Acked-by: Jeff Kirsher <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Incoming packet is dropped silently by sk_filter(), if the skb was
allocated from pfmemalloc reserves and the corresponding socket is
not marked with the SOCK_MEMALLOC flag.
Igb driver allocates pages for DMA with __skb_alloc_page(), which
calls alloc_pages_node() with the __GFP_MEMALLOC flag. So, in case
of OOM condition, igb can get pages with pfmemalloc flag set.
If an incoming packet hits the pfmemalloc page and is large enough
(small packets are copying into the memory, allocated with
netdev_alloc_skb_ip_align(), so they are not affected), it will be
dropped.
This behavior is ok under high memory pressure, but the problem is
that the igb driver reuses these mapped pages. So, packets are still
dropping even if all memory issues are gone and there is a plenty
of free memory.
In my case, some TCP sessions hang on a small percentage (< 0.1%)
of machines days after OOMs.
Fix this by avoiding reuse of such pages.
Signed-off-by: Roman Gushchin <[email protected]>
Tested-by: Aaron Brown "[email protected]"
Signed-off-by: Jeff Kirsher <[email protected]>
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This is illegal to use atomic_set(&page->_count, 2) even if we 'own'
the page. Other entities in the kernel need to use get_page_unless_zero()
to get a reference to the page before testing page properties, so we could
loose a refcount increment.
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Jeff Kirsher <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Bump version
Signed-off-by: Todd Fujinaka <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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Convert two more Intel NIC drivers to dev_consume_skb_any() to help
make dropped packet profiling sane.
Signed-off-by: Rick Jones <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Tested-by: Jim Young <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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Remove a source of latency spikes (in my case up to 10ms) by not calling
code that uses mdelay() for feeding a phy statistic (rx errors for idle
symbols - not data -> idle_errors) while being called with a spinlock held.
As idle_errors isn't read, this patch only removes unused code and data.
Later, more complicated changes may be applied to address the spinlock and
allow for some PHY diagnostics by harvesting this PHY stats register fully.
This patch is designed to fix the issue and be safe for longterm/stable.
For the Intel e1000e driver, the same change was applied in 2008 with
commit 23033fad5be0 ("e1000e: remove phy read from inside spinlock").
The mdelay is triggered by HW/SW semaphores, thus it depends on the HW.
I've HW that triggers it even when idle. Others may trigger it only e.g.
when Ethernet ports aquire or loose the link or on ifconfig up / down.
We've noticed this first from delays in frame rx/tx due to the mdelay().
Example command for checking if the issue is triggered: cyclictest -Smp1
(Look for occasional "Max:" values > 4000 or use -b 4000 to stop if greater)
It was observed with I350 ports connected to other I350 ports, but not
if driver and EEPROM was modified to run the I350 in EEPROM-less mode.
phy_stats.idle_errors and .receive_errors (isn't touched) occupy 64 not
used bits in the adapter struct: Their allocation may be removed as well.
Cc: Carolyn Wyborny <[email protected]>
Cc: Todd Fujinaka <[email protected]>
Fixes: 12dcd86b75d5 ("igb: fix stats handling") (this added the spin_lock)
Signed-off-by: Bernhard Kaindl <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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Change e1000_set_eee and e1000_set_eee_i35(0|4) to allow
changes in the advertised EEE speeds from ethtool. Adds two boolean
flags to e1000_set_eee_i35(0|4) to pass in advertised speed data.
Signed-off-by: Todd Fujinaka <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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Update igb to drop the igb_get_headlen function in favor of eth_get_headlen.
Signed-off-by: Alexander Duyck <[email protected]>
Acked-by: Jeff Kirsher <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Mirror the changes made to ixgbe in commit 2367a17390138f68b3aa28f2f220b8d7ff8d91f4
("ixgbe: flush when in xmit_more mode and under descriptor pressure")
Signed-off-by: David S. Miller <[email protected]>
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As reported by Jesper Dangaard Brouer, for high packet rates the
overhead of having another indirect call in the TX path is
non-trivial.
There is the indirect call itself, and then there is all of the
reloading of the state to refetch the tail pointer value and
then write the device register.
Move to a more passive scheme, which requires very light modifications
to the device drivers.
The signal is a new skb->xmit_more value, if it is non-zero it means
that more SKBs are pending to be transmitted on the same queue as the
current SKB. And therefore, the driver may elide the tail pointer
update.
Right now skb->xmit_more is always zero.
Signed-off-by: David S. Miller <[email protected]>
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Signed-off-by: David S. Miller <[email protected]>
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Bump version number.
Signed-off-by: Todd Fujinaka <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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This patch adds a check and prints the error cause register value when
the hardware detects a malformed packet. This is a very unlikely
scenario but has been seen occasionally, so printing the message to
assist the user.
Signed-off-by: Carolyn Wyborny <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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Signed-off-by: Fabian Frederick <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Signed-off-by: David S. Miller <[email protected]>
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Signed-off-by: Fabian Frederick <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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To properly re-initialize SR-IOV it is necessary to reset the device
even if it is already down. Not doing this may result in Tx unit hangs.
Cc: stable <[email protected]>
Signed-off-by: Stefan Assmann <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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On some devices, the internal PLL circuit occasionally provides the
wrong clock frequency after power up. The probability of failure is less
than one failure per 1000 power cycles. When the failure occurs, the
internal clock frequency is around 1/20 of the correct frequency.
Cc: stable <[email protected]>
Signed-off-by: Todd Fujinaka <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Call igb_setup_link() when the PHY is powered up.
Signed-off-by: Todd Fujinaka <[email protected]>
Reported-by: Jeff Westfahl <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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This patch separates the hardware logic from the set function, so that
we can re-use it during a ptp_reset. This enables the reset to return
functionality to the last known timestamp mode, rather than resetting
the value. We initialize the mode to off during the ptp_init cycle.
Signed-off-by: Jacob Keller <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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Return a 0 directly rather than a constant.
Reported-by: Peter Senna Tschudin <[email protected]>
Signed-off-by: Todd Fujinaka <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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Signed-off-by: Jiri Pirko <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Signed-off-by: Jiri Pirko <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Set the defaults on probe for the packet buffer size registers for the
i210.
Signed-off-by: Todd Fujinaka <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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We can't know what PHY is to be used for i354 backplane, so use MAC
loopback for ethtool tests.
Signed-off-by: Todd Fujinaka <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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The name igb_ptp_enable is not synonymous with the purpose of this
function, so rename it to better explain its purpose.
Signed-off-by: Jacob Keller <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/bwh/net-next
Ben Hutchings says:
====================
Pull request: Fixes for new ethtool RSS commands
This addresses several problems I previously identified with the new
ETHTOOL_{G,S}RSSH commands:
1. Missing validation of reserved parameters
2. Vague documentation
3. Use of unnamed magic number
4. No consolidation with existing driver operations
I don't currently have access to suitable network hardware, but have
tested these changes with a dummy driver that can support various
combinations of operations and sizes, together with (a) Debian's ethtool
3.13 (b) ethtool 3.14 with the submitted patch to use ETHTOOL_{G,S}RSSH
and minor adjustment for fixes 1 and 3.
v2: Update RSS operations in vmxnet3 too
====================
Signed-off-by: David S. Miller <[email protected]>
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ETHTOOL_{G,S}RXFHINDIR and ETHTOOL_{G,S}RSSH should work for drivers
regardless of whether they expose the hash key, unless you try to
set a hash key for a driver that doesn't expose it.
Signed-off-by: Ben Hutchings <[email protected]>
Acked-by: Jeff Kirsher <[email protected]>
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One of the registers used to power down the PHY was found to be wrong
(should be bit 2 not bit 1) on further inspection it was also found to
be redundant.
Signed-off-by: Todd Fujinaka <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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