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769982 Commits

Author SHA1 Message Date
David S. Miller
41627cdb02 linux-can-next-for-4.19-20180727
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Merge tag 'linux-can-next-for-4.19-20180727' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next

Marc Kleine-Budde says:

====================
pull-request: can-next 2018-01-16

this is a pull request for net-next/master consisting of 38 patches.

Dan Murphy's patch fixes the path to a file in the comment of the CAN
Error Message Frame Mask structure.

A patch by Colin Ian King fixes a typo in the cc770 driver.

The next patch is by me an sorts the Kconfigand Makefile entries of the
CAN-USB driver subdir alphabetically.

The patch by Jakob Unterwurzacher adds support for the UCAN USB-CAN
adapter.

YueHaibing's patch replaces a open coded skb_put()+memset() by
skb_put_zero() in the CAN-dev infrastructure.

Zhu Yi provides a patch to enable multi-queue CAN devices.

Three patches by Luc Van Oostenryck fix the return value of several
driver's xmit function, I contribute a patch for the a fourth driver.

Fabio Estevam's patch switches the flexcan driver to SPDX identifier.

Two patches by Jia-Ju Bai replace the mdelay() by a usleep_range() in
the sja1000 drivers.

The next 6 patches are by Anssi Hannula and refactor the xilinx CAN
driver and add support for the xilinx CAN FD core.

A patch by Gustavo A. R. Silva adds fallthrough annotation to the
peak_usb driver.

5 patches by Stephane Grosjean for the peak CANFD driver do some
cleanups and provide more improvements for further firmware releases.

The remaining 13 patches are by Jimmy Assarsson and the first clean up
the kvaser_usb driver, so that the later patches add support for the
Kvaser USB hydra family.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-29 08:35:03 -07:00
YueHaibing
4be90c79d6 qed: remove redundant functions qed_set_gft_event_id_cm_hdr
There are no in-tree callers of qed_set_gft_event_id_cm_hdr.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-29 08:33:30 -07:00
YueHaibing
5ae42de56b liquidio: remove redundant function cn23xx_dump_vf_iq_regs
There are no in-tree callers.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-29 08:31:07 -07:00
Rafael J. Wysocki
b0cd6035d3 Merge branch 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Pull turbostat utility fixes for 4.18 from Len Brown:

"Three of them are for regressions since Linux-4.17"

* 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power turbostat: version 18.07.27
  tools/power turbostat: Read extended processor family from CPUID
  tools/power turbostat: Fix logical node enumeration to allow for non-sequential physical nodes
  tools/power turbostat: fix x2apic debug message output file
  tools/power turbostat: fix bogus summary values
  tools/power turbostat: fix -S on UP systems
  tools/power turbostat: Update turbostat(8) RAPL throttling column description
2018-07-29 12:37:55 +02:00
Erik Schmauss
460a53106a ACPICA: AML Parser: ignore control method status in module-level code
Previous change in the AML parser code blindly set all non-successful
dispatcher statuses to AE_OK. That approach is incorrect, though,
because successful control method invocations from module-level
return AE_CTRL_TRANSFER. Overwriting AE_OK to this status causes the
AML parser to think that there was no return value from the control
method invocation.

Fixes: 92c0f4af386 (ACPICA: AML Parser: ignore dispatcher error status during table load)
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Tested-by: Linus Torvalds <torvalds@linux-foundation.org>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-07-29 12:19:45 +02:00
David S. Miller
d339377c04 Merge branch 'tls-Fix-improper-revert-in-zerocopy_from_iter'
Doron Roberts-Kedes says:

====================
tls: Fix improper revert in zerocopy_from_iter

This series fixes the improper iov_iter_revert introcded in
"tls: Fix zerocopy_from_iter iov handling".
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:53:31 -07:00
Doron Roberts-Kedes
2da19ed3e4 tls: Fix improper revert in zerocopy_from_iter
The current code is problematic because the iov_iter is reverted and
never advanced in the non-error case. This patch skips the revert in the
non-error case. This patch also fixes the amount by which the iov_iter
is reverted. Currently, iov_iter is reverted by size, which can be
greater than the amount by which the iter was actually advanced.
Instead, only revert by the amount that the iter was advanced.

Fixes: 4718799817 ("tls: Fix zerocopy_from_iter iov handling")
Signed-off-by: Doron Roberts-Kedes <doronrk@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:53:31 -07:00
Doron Roberts-Kedes
5a3611efe5 tls: Remove dead code in tls_sw_sendmsg
tls_push_record either returns 0 on success or a negative value on failure.
This patch removes code that would only be executed if tls_push_record
were to return a positive value.

Signed-off-by: Doron Roberts-Kedes <doronrk@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:53:31 -07:00
Neal Cardwell
383d470936 tcp_bbr: fix bw probing to raise in-flight data for very small BDPs
For some very small BDPs (with just a few packets) there was a
quantization effect where the target number of packets in flight
during the super-unity-gain (1.25x) phase of gain cycling was
implicitly truncated to a number of packets no larger than the normal
unity-gain (1.0x) phase of gain cycling. This meant that in multi-flow
scenarios some flows could get stuck with a lower bandwidth, because
they did not push enough packets inflight to discover that there was
more bandwidth available. This was really only an issue in multi-flow
LAN scenarios, where RTTs and BDPs are low enough for this to be an
issue.

This fix ensures that gain cycling can raise inflight for small BDPs
by ensuring that in PROBE_BW mode target inflight values with a
super-unity gain are always greater than inflight values with a gain
<= 1. Importantly, this applies whether the inflight value is
calculated for use as a cwnd value, or as a target inflight value for
the end of the super-unity phase in bbr_is_next_cycle_phase() (both
need to be bigger to ensure we can probe with more packets in flight
reliably).

This is a candidate fix for stable releases.

Fixes: 0f8782ea14 ("tcp_bbr: add BBR congestion control")
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Priyaranjan Jha <priyarjha@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:46:07 -07:00
David S. Miller
6d27c6dd10 Merge branch 'net-socket-Fix-potential-spectre-v1-gadgets'
Jeremy Cline says:

====================
net: socket: Fix potential spectre v1 gadgets

This fixes a pair of potential spectre v1 gadgets.

Note that because the speculation window is large, the policy is to stop
the speculative out-of-bounds load and not worry if the attack can be
completed with a dependent load or store[0].

[0] https://marc.info/?l=linux-kernel&m=152449131114778
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:43:31 -07:00
Jeremy Cline
e978de7a6d net: socket: Fix potential spectre v1 gadget in sock_is_registered
'family' can be a user-controlled value, so sanitize it after the bounds
check to avoid speculative out-of-bounds access.

Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jeremy Cline <jcline@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:43:30 -07:00
Jeremy Cline
c8e8cd579b net: socket: fix potential spectre v1 gadget in socketcall
'call' is a user-controlled value, so sanitize the array index after the
bounds check to avoid speculating past the bounds of the 'nargs' array.

Found with the help of Smatch:

net/socket.c:2508 __do_sys_socketcall() warn: potential spectre issue
'nargs' [r] (local cap)

Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jeremy Cline <jcline@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:43:30 -07:00
David S. Miller
37b81dc5ed Merge branch 'mvneta-next'
Gregory CLEMENT says:

====================
A fix and a few improvements on mvneta

This series brings some improvements for the mvneta driver and also
adds a fix.

Compared to the v2, the main change is another patch fixing a bug
in mtu_change.

Changelog:
v1 -> v2

 - In patch 2, use EXPORT_SYMBOL_GPL for mvneta_bm_get and
   mvneta_bm_put to be used in module, reported by kbuild test robot.

 - In patch 4, add the counter to the driver's ethtool state,
   suggested by David Miller.

 - In patch 6, use a single if, suggested by Marcin Wojtas

v2 -> v3

 - Adding a patch fixing the mtu change issue

 - Removing the inline keyword for mvneta_rx_refill() and let the
   comiler decided, suggested by David Miller.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:12:55 -07:00
Yelena Krivosheev
562e2f467e net: mvneta: Improve the buffer allocation method for SWBM
With system having a small memory (around 256MB), the state "cannot
allocate memory to refill with new buffer" is reach pretty quickly.

By this patch we changed buffer allocation method to a better handling of
this use case by avoiding memory allocation issues.

Signed-off-by: Yelena Krivosheev <yelena@marvell.com>
[gregory: extract from a larger patch]
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:12:55 -07:00
Yelena Krivosheev
f945cec88c net: mvneta: Verify hardware checksum only when offload checksum feature is set
If the checksum offload feature is not set, then there is no point to
check the status of the hardware.

[gregory: extract from a larger patch]
Signed-off-by: Yelena Krivosheev <yelena@marvell.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:12:55 -07:00
Gregory CLEMENT
7e47fd84b5 net: mvneta: Allocate page for the descriptor
Instead of trying to allocate the exact amount of memory for each
descriptor use a page for each of them, it allows to simplify the
allocation management and increase the performance of the driver.

Based on the work of Yelena Krivosheev <yelena@marvell.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:12:55 -07:00
Gregory CLEMENT
17a96da627 net: mvneta: discriminate error cause for missed packet
In order to improve the diagnostic in case of error, make the distinction
between refill error and skb allocation error. Also make the information
available through the ethtool state.

Based on the work of Yelena Krivosheev <yelena@marvell.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:12:55 -07:00
Yelena Krivosheev
c307e2a895 net: mvneta: increase number of buffers in RX and TX queue
The initial values were too small leading to poor performance when using
the software buffer management.

Signed-off-by: Yelena Krivosheev <yelena@marvell.com>
[gregory: extract from a larger patch]
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:12:55 -07:00
Gregory CLEMENT
965cbbec7f net: mvneta: remove data pointer usage from device_node structure
On year ago Rob Herring wanted to remove the data pointer from the
device_node structure[1]. The mvneta driver seemed to be the only one
which used (abused ?) it. However, the proposal of Rob to remove this
pointer from the driver introduced a regression, and I tested and fixed an
alternative way, but it was never submitted as a proper patch.

Now here it is: Instead of using the device_node structure ->data
pointer, we store the BM private data as the driver data of the BM
platform_device. The core mvneta code can retrieve it by doing a lookup
on which platform_device corresponds to the BM device tree node using
of_find_device_by_node(), and get its driver data

[1]https://www.spinics.net/lists/netdev/msg445197.html

Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:12:55 -07:00
Yelena Krivosheev
8466baf788 net: mvneta: fix mtu change on port without link
It is incorrect to enable TX/RX queues (call by mvneta_port_up()) for
port without link. Indeed MTU change for interface without link causes TX
queues to stuck.

Fixes: c5aff18204 ("net: mvneta: driver for Marvell Armada 370/XP
network unit")
Signed-off-by: Yelena Krivosheev <yelena@marvell.com>
[gregory.clement: adding Fixes tags and rewording commit log]
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:12:55 -07:00
Andrew Lunn
7a86f05faf net: ethernet: mvneta: Fix napi structure mixup on armada 3700
The mvneta Ethernet driver is used on a few different Marvell SoCs.
Some SoCs have per cpu interrupts for Ethernet events. Some SoCs have
a single interrupt, independent of the CPU. The driver handles this by
having a per CPU napi structure when there are per CPU interrupts, and
a global napi structure when there is a single interrupt.

When the napi core calls mvneta_poll(), it passes the napi
instance. This was not being propagated through the call chain, and
instead the per-cpu napi instance was passed to napi_gro_receive()
call. This breaks when there is a single global napi instance.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Fixes: 2636ac3cc2 ("net: mvneta: Add network support for Armada 3700 SoC")
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:12:55 -07:00
David S. Miller
958b4cd8fa Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says:

====================
pull-request: bpf 2018-07-28

The following pull-request contains BPF updates for your *net* tree.

The main changes are:

1) API fixes for libbpf's BTF mapping of map key/value types in order
   to make them compatible with iproute2's BPF_ANNOTATE_KV_PAIR()
   markings, from Martin.

2) Fix AF_XDP to not report POLLIN prematurely by using the non-cached
   consumer pointer of the RX queue, from Björn.

3) Fix __xdp_return() to check for NULL pointer after the rhashtable
   lookup that retrieves the allocator object, from Taehee.

4) Fix x86-32 JIT to adjust ebp register in prologue and epilogue
   by 4 bytes which got removed from overall stack usage, from Wang.

5) Fix bpf_skb_load_bytes_relative() length check to use actual
   packet length, from Daniel.

6) Fix uninitialized return code in libbpf bpf_perf_event_read_simple()
   handler, from Thomas.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 21:02:21 -07:00
Linus Torvalds
a26fb01c28 In reaction to the fixes to address CVE-2018-1108, some Linux
distributions that have certain systemd versions in some cases
 combined with patches to libcrypt for FIPS/FEDRAMP compliance, have
 led to boot-time stalls for some hardware.  The reaction by some
 distros and Linux sysadmins has been to install packages that try to
 do complicated things with the CPU and hope that leads to randomness.
 To mitigate this, if RDRAND is available, mix it into entropy provided
 by userspace.  It won't hurt. and it will probably help.
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Merge tag 'random_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random

Pull random fixes from Ted Ts'o:
 "In reaction to the fixes to address CVE-2018-1108, some Linux
  distributions that have certain systemd versions in some cases
  combined with patches to libcrypt for FIPS/FEDRAMP compliance, have
  led to boot-time stalls for some hardware.

  The reaction by some distros and Linux sysadmins has been to install
  packages that try to do complicated things with the CPU and hope that
  leads to randomness.

  To mitigate this, if RDRAND is available, mix it into entropy provided
  by userspace. It won't hurt, and it will probably help"

* tag 'random_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
  random: mix rdrand with entropy sent in from userspace
2018-07-28 19:40:06 -07:00
Anton Vasilyev
b0753408aa net: mdio-mux: bcm-iproc: fix wrong getter and setter pair
mdio_mux_iproc_probe() uses platform_set_drvdata() to store md pointer
in device, whereas mdio_mux_iproc_remove() restores md pointer by
dev_get_platdata(&pdev->dev). This leads to wrong resources release.

The patch replaces getter to platform_get_drvdata.

Fixes: 98bc865a1e ("net: mdio-mux: Add MDIO mux driver for iProc SoCs")
Signed-off-by: Anton Vasilyev <vasilyev@ispras.ru>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 19:07:38 -07:00
Lorenzo Bianconi
9fc12023d6 ipv4: remove BUG_ON() from fib_compute_spec_dst
Remove BUG_ON() from fib_compute_spec_dst routine and check
in_dev pointer during flowi4 data structure initialization.
fib_compute_spec_dst routine can be run concurrently with device removal
where ip_ptr net_device pointer is set to NULL. This can happen
if userspace enables pkt info on UDP rx socket and the device
is removed while traffic is flowing

Fixes: 35ebf65e85 ("ipv4: Create and use fib_compute_spec_dst() helper")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 19:06:12 -07:00
Govindarajulu Varadarajan
ab123fe071 enic: handle mtu change for vf properly
When driver gets notification for mtu change, driver does not handle it for
all RQs. It handles only RQ[0].

Fix is to use enic_change_mtu() interface to change mtu for vf.

Signed-off-by: Govindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 19:04:38 -07:00
Linus Torvalds
2ffb57dfa7 GPIO fixes for v4.18:
- OF flag fix for special regulator flags.
 - Fix up the Uniphier IRQ callback.
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Merge tag 'gpio-v4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "Just a smallish OF fix and a driver fix:

   - OF flag fix for special regulator flags

   - fix up the Uniphier IRQ callback"

* tag 'gpio-v4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: uniphier: set legitimate irq trigger type in .to_irq hook
  gpio: of: Handle fixed regulator flags properly
2018-07-28 15:43:14 -07:00
Stefan Wahren
136f55f660 net: lan78xx: fix rx handling before first packet is send
As long the bh tasklet isn't scheduled once, no packet from the rx path
will be handled. Since the tx path also schedule the same tasklet
this situation only persits until the first packet transmission.
So fix this issue by scheduling the tasklet after link reset.

Link: https://github.com/raspberrypi/linux/issues/2617
Fixes: 55d7de9de6 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet")
Suggested-by: Floris Bos <bos@je-eigen-domein.nl>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 14:29:49 -07:00
John Hurley
ee614c8710 nfp: flower: fix port metadata conversion bug
Function nfp_flower_repr_get_type_and_port expects an enum nfp_repr_type
return value but, if the repr type is unknown, returns a value of type
enum nfp_flower_cmsg_port_type.  This means that if FW encodes the port
ID in a way the driver does not understand instead of dropping the frame
driver may attribute it to a physical port (uplink) provided the port
number is less than physical port count.

Fix this and ensure a net_device of NULL is returned if the repr can not
be determined.

Fixes: 1025351a88 ("nfp: add flower app")
Signed-off-by: John Hurley <john.hurley@netronome.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 14:27:32 -07:00
Linus Torvalds
7648c44680 One more fix for 4.18:
- Revert an errata workaround for the BCM5300X platform that was
     merged for v4.18-rc2 but has been found to cause hangs on at least
     systems using the BCM4718A1.
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Merge tag 'mips_fixes_4.18_5' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS fix from Paul Burton:
 "Here's one more MIPS fix, reverting an errata workaround that was
  merged for v4.18-rc2 but has since been found to cause system hangs on
  some BCM4718A1-based systems by the OpenWRT project"

* tag 'mips_fixes_4.18_5' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  Revert "MIPS: BCM47XX: Enable 74K Core ExternalSync for PCIe erratum"
2018-07-28 12:32:28 -07:00
Taehee Yoo
71eb5255f5 bpf: use GFP_ATOMIC instead of GFP_KERNEL in bpf_parse_prog()
bpf_parse_prog() is protected by rcu_read_lock().
so that GFP_KERNEL is not allowed in the bpf_parse_prog().

[51015.579396] =============================
[51015.579418] WARNING: suspicious RCU usage
[51015.579444] 4.18.0-rc6+ #208 Not tainted
[51015.579464] -----------------------------
[51015.579488] ./include/linux/rcupdate.h:303 Illegal context switch in RCU read-side critical section!
[51015.579510] other info that might help us debug this:
[51015.579532] rcu_scheduler_active = 2, debug_locks = 1
[51015.579556] 2 locks held by ip/1861:
[51015.579577]  #0: 00000000a8c12fd1 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x2e0/0x910
[51015.579711]  #1: 00000000bf815f8e (rcu_read_lock){....}, at: lwtunnel_build_state+0x96/0x390
[51015.579842] stack backtrace:
[51015.579869] CPU: 0 PID: 1861 Comm: ip Not tainted 4.18.0-rc6+ #208
[51015.579891] Hardware name: To be filled by O.E.M. To be filled by O.E.M./Aptio CRB, BIOS 5.6.5 07/08/2015
[51015.579911] Call Trace:
[51015.579950]  dump_stack+0x74/0xbb
[51015.580000]  ___might_sleep+0x16b/0x3a0
[51015.580047]  __kmalloc_track_caller+0x220/0x380
[51015.580077]  kmemdup+0x1c/0x40
[51015.580077]  bpf_parse_prog+0x10e/0x230
[51015.580164]  ? kasan_kmalloc+0xa0/0xd0
[51015.580164]  ? bpf_destroy_state+0x30/0x30
[51015.580164]  ? bpf_build_state+0xe2/0x3e0
[51015.580164]  bpf_build_state+0x1bb/0x3e0
[51015.580164]  ? bpf_parse_prog+0x230/0x230
[51015.580164]  ? lock_is_held_type+0x123/0x1a0
[51015.580164]  lwtunnel_build_state+0x1aa/0x390
[51015.580164]  fib_create_info+0x1579/0x33d0
[51015.580164]  ? sched_clock_local+0xe2/0x150
[51015.580164]  ? fib_info_update_nh_saddr+0x1f0/0x1f0
[51015.580164]  ? sched_clock_local+0xe2/0x150
[51015.580164]  fib_table_insert+0x201/0x1990
[51015.580164]  ? lock_downgrade+0x610/0x610
[51015.580164]  ? fib_table_lookup+0x1920/0x1920
[51015.580164]  ? lwtunnel_valid_encap_type.part.6+0xcb/0x3a0
[51015.580164]  ? rtm_to_fib_config+0x637/0xbd0
[51015.580164]  inet_rtm_newroute+0xed/0x1b0
[51015.580164]  ? rtm_to_fib_config+0xbd0/0xbd0
[51015.580164]  rtnetlink_rcv_msg+0x331/0x910
[ ... ]

Fixes: 3a0af8fd61 ("bpf: BPF for lightweight tunnel infrastructure")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-07-28 21:23:24 +02:00
Daniel Borkmann
3eee1f75f2 bpf: fix bpf_skb_load_bytes_relative pkt length check
The len > skb_headlen(skb) cannot be used as a maximum upper bound
for the packet length since it does not have any relation to the full
linear packet length when filtering is used from upper layers (e.g.
in case of reuseport BPF programs) as by then skb->data, skb->len
already got mangled through __skb_pull() and others.

Fixes: 4e1ec56cdc ("bpf: add skb_load_bytes_relative helper")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
2018-07-28 21:23:24 +02:00
Thomas Richter
b611da43b6 perf build: Build error in libbpf missing initialization
In linux-next tree compiling the perf tool with additional make flags
EXTRA_CFLAGS="-Wp,-D_FORTIFY_SOURCE=2 -O2" causes a compiler error.
It is the warning 'variable may be used uninitialized' which is treated
as error: I compile it using a FEDORA 28 installation, my gcc compiler
version: gcc (GCC) 8.0.1 20180324 (Red Hat 8.0.1-0.20). The file that
causes the error is tools/lib/bpf/libbpf.c.

  [root@p23lp27] # make V=1 EXTRA_CFLAGS="-Wp,-D_FORTIFY_SOURCE=2 -O2"
  [...]
  Makefile.config:849: No openjdk development package found, please
     install JDK package, e.g. openjdk-8-jdk, java-1.8.0-openjdk-devel
  Warning: Kernel ABI header at 'tools/include/uapi/linux/if_link.h'
          differs from latest version at 'include/uapi/linux/if_link.h'
    CC       libbpf.o
  libbpf.c: In function ‘bpf_perf_event_read_simple’:
  libbpf.c:2342:6: error: ‘ret’ may be used uninitialized in this
  			function [-Werror=maybe-uninitialized]
    int ret;
        ^
  cc1: all warnings being treated as errors
  mv: cannot stat './.libbpf.o.tmp': No such file or directory
  /home6/tmricht/linux-next/tools/build/Makefile.build:96: recipe for target 'libbpf.o' failed

Suggested-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-07-28 21:22:40 +02:00
Linus Torvalds
dd63bf22fc Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
 "Some driver bugfixes"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: imx: use open drain for recovery GPIO
  i2c: rcar: handle RXDMA HW behaviour on Gen3
  i2c: imx: Fix reinit_completion() use
  i2c: davinci: Avoid zero value of CLKH
2018-07-28 10:04:40 -07:00
Saeed Mahameed
a3e673660b net/mlx5e: Issue direct lookup on vxlan ports by vport representors
Remove uplink representor netdevice private structure lookup, and use
mlx5 core handle directly from representor private structure to lookup
vxlan ports.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
2018-07-27 15:46:13 -07:00
Saeed Mahameed
358aa5ce28 net/mlx5e: Vxlan, move vxlan logic to core driver
Move vxlan logic and objects to mlx5 core dirver.
Since it going to be used from different mlx5 interfaces.
e.g. mlx5e PF NIC netdev and mlx5e E-Switch representors.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
2018-07-27 15:46:13 -07:00
Saeed Mahameed
aec4eab9af net/mlx5e: Vxlan, add sync lock for add/del vxlan port
Vxlan API can and will be called from different mlx5 modules, we should
not count on mlx5e private state lock only, hence we introduce a vxlan
private mutex to sync between add/del vxlan port operations.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
2018-07-27 15:46:11 -07:00
Saeed Mahameed
1b318a92f3 net/mlx5e: Vxlan, return values for add/del port
For a better API mlx5_vxlan_{add/del}_port can fail, make them return
error values.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
2018-07-27 15:43:06 -07:00
Saeed Mahameed
a3c785d73c net/mlx5e: Vxlan, rename from mlx5e to mlx5
Rename vxlan functions from mlx5e_vxlan_* to mlx5_vxlan_*.
Rename mlx5e_vxlan_db to mlx5_vxlan and move it from en.h to vxlan.c
since it is not related to mlx5e anymore.

Allocate mlx5_vxlan structure dynamically in order to make it easier to
move later to core driver and to make it private in vxlan.c.

This is in preparation to move vxlan API to mlx5 core.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
2018-07-27 15:43:04 -07:00
Saeed Mahameed
5006eb221e net/mlx5e: Vxlan, rename struct mlx5e_vxlan to mlx5_vxlan_port
The name mlx5e_vxlan will be used in downstream patch to describe
mlx5 vxlan structure that will replace mlx5e_vxlan_db.

Hence we rename struct mlx5e_vxlan to mlx5_vxlan_port which describes a
mlx5 vxlan port.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
2018-07-27 15:36:51 -07:00
Saeed Mahameed
dccea6bf38 net/mlx5e: Vxlan, move netdev only logic to en_main.c
Create a direct vxlan API to add and delete vxlan ports from HW.
+void mlx5e_vxlan_add_port(struct mlx5e_priv *priv, u16 port);
+void mlx5e_vxlan_del_port(struct mlx5e_priv *priv, u16 port);

And move vxlan_add/del_work to en_main.c since they are netdev only
logic.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
2018-07-27 15:35:16 -07:00
Saeed Mahameed
0f647bfcd0 net/mlx5e: Vxlan, add direct delete function
Add direct vxlan delete function to be called from vxlan_delete_work.
Needed in downstream patch.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
2018-07-27 15:35:14 -07:00
Gal Pressman
278d7f3dc0 net/mlx5e: Vxlan, cleanup an unused member in vxlan work
Cleanup the sa_family member of the vxlan work, it is unused/needed
anywhere in the code.

Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-07-27 15:30:32 -07:00
Dan Carpenter
a54e43f993 PCI: mobiveil: Avoid integer overflow in IB_WIN_SIZE
IB_WIN_SIZE is larger than INT_MAX so we need to cast it to u64.

Fixes: 9af6bcb11e ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2018-07-27 17:10:39 -05:00
Gal Pressman
d30d8cde19 net/mlx5e: Vxlan, replace ports radix-tree with hash table
The VXLAN database is accessed in the data path for each VXLAN TX skb in
order to check whether the UDP port is being offloaded or not.
The number of elements in the database is relatively small, we can
simplify the radix-tree to a hash table and speedup the lookup process.

Measuring mlx5e_vxlan_lookup_port execution time:

                  Radix Tree   Hash Table
 --------------- ------------ ------------
  Single Stream   161 ns       79  ns (51% improvement)
  Multi Stream    259 ns       136 ns (47% improvement)

Measuring UDP stream packet rate, single fully utilized TX core:
Radix Tree: 498,300 PPS
Hash Table: 555,468 PPS (11% improvement)

Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-07-27 13:56:44 -07:00
Gal Pressman
22a65aa8b1 net/mlx5e: Vxlan, check maximum number of UDP ports
The NIC has a limited number of offloaded VXLAN UDP ports (usually 4).
Instead of letting the firmware fail when trying to add more ports than
it can handle, let the driver check it on its own.

Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-07-27 13:56:44 -07:00
Gal Pressman
a082c4f4f0 net/mlx5e: Vxlan, reflect 4789 UDP port default addition to software database
The hardware offloads 4789 UDP port (default VXLAN port) automatically.
Add it to the software database as well in order to reflect the hardware
state appropriately.

Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-07-27 13:56:44 -07:00
Jia-Ju Bai
a0732548ba net: tipc: bcast: Replace GFP_ATOMIC with GFP_KERNEL in tipc_bcast_init()
tipc_bcast_init() is never called in atomic context.
It calls kzalloc() with GFP_ATOMIC, which is not necessary.
GFP_ATOMIC can be replaced with GFP_KERNEL.

This is found by a static analysis tool named DCNS written by myself.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-27 13:45:15 -07:00
Jia-Ju Bai
04b9ce48ef net: tipc: name_table: Replace GFP_ATOMIC with GFP_KERNEL in tipc_nametbl_init()
tipc_nametbl_init() is never called in atomic context.
It calls kzalloc() with GFP_ATOMIC, which is not necessary.
GFP_ATOMIC can be replaced with GFP_KERNEL.

This is found by a static analysis tool named DCNS written by myself.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-27 13:45:15 -07:00
Jia-Ju Bai
ba23dc642d net: usb: sr9700: Replace mdelay() with msleep() in sr9700_bind()
sr9700_bind() is never called in atomic context.
It calls mdelay() to busily wait, which is not necessary.
mdelay() can be replaced with msleep().

This is found by a static analysis tool named DCNS written by myself.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-27 13:45:15 -07:00