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Commit Graph

826441 Commits

Author SHA1 Message Date
Paolo Abeni
73eb628ddf Revert: "net: sched: put back q.qlen into a single location"
This revert commit 46b1c18f9d ("net: sched: put back q.qlen into
a single location").
After the previous patch, when a NOLOCK qdisc is enslaved to a
locking qdisc it switches to global stats accounting. As a consequence,
when a classful qdisc accesses directly a child qdisc's qlen, such
qdisc is not doing per CPU accounting and qlen value is consistent.

In the control path nobody uses directly qlen since commit
e5f0e8f8e4 ("net: sched: introduce and use qdisc tree flush/purge
helpers"), so we can remove the contented atomic ops from the
datapath.

v1 -> v2:
 - complete the qdisc_qstats_atomic_qlen_dec() ->
   qdisc_qstats_cpu_qlen_dec() replacement, fix build issue
 - more descriptive commit message

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-10 12:20:46 -07:00
Paolo Abeni
8a53e616de net: sched: when clearing NOLOCK, clear TCQ_F_CPUSTATS, too
Since stats updating is always consistent with TCQ_F_CPUSTATS flag,
we can disable it at qdisc creation time flipping such bit.

In my experiments, if the NOLOCK flag is cleared, per CPU stats
accounting does not give any measurable performance gain, but it
waste some memory.

Let's clear TCQ_F_CPUSTATS together with NOLOCK, when enslaving
a NOLOCK qdisc to 'lock' one.

Use stats update helper inside pfifo_fast, to cope correctly with
TCQ_F_CPUSTATS flag change.

As a side effect, q.qlen value for any child qdiscs is always
consistent for all lock classfull qdiscs.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-10 12:20:46 -07:00
Paolo Abeni
9c01c9f1f2 net: sched: always do stats accounting according to TCQ_F_CPUSTATS
The core sched implementation checks independently for NOLOCK flag
to acquire/release the root spin lock and for qdisc_is_percpu_stats()
to account per CPU values in many places.

This change update the last few places checking the TCQ_F_NOLOCK to
do per CPU stats accounting according to qdisc_is_percpu_stats()
value.

The above allows to clean dev_requeue_skb() implementation a bit
and makes stats update always consistent with a single flag.

v1 -> v2:
 - do not move qdisc_is_empty definition, fix build issue

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-10 12:20:46 -07:00
Paolo Abeni
1f5e6fdd6a net: sched: prefer qdisc_is_empty() over direct qlen access
When checking for root qdisc queue length, do not access directly q.qlen.
In the following patches we will move back qlen accounting to per CPU
values for NOLOCK qdiscs.

Instead, prefer the qdisc_is_empty() helper usage.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-10 12:20:46 -07:00
Paolo Abeni
b0a231a26d net: caif: avoid using qdisc_qlen()
Such helper does not cope correctly with NOLOCK qdiscs.
In the following patches we will move back qlen to per CPU
values for such qdiscs, so qdisc_qlen_sum() is not an option,
too.
Instead, use qlen only for lock qdiscs, and always set
flow off for NOLOCK qdiscs with a not empty tx queue.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-10 12:20:46 -07:00
Heiner Kallweit
4c75be07f9 net: phy: remove unnecessary callback settings in C45 drivers
genphy_c45_aneg_done() is used by phylib as fallback for c45 PHY's if
callback aneg_done isn't defined. So we don't have to set this
explicitly. Same for genphy_c45_pma_read_abilities().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-09 13:07:07 -07:00
David S. Miller
0c9381d9bc Merge branch 'netdevsim-small-spring-cleanup'
Jiri Pirko says:

====================
netdevsim: small spring cleanup

Nothing serious, just cosmetics.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-09 11:16:59 -07:00
Jiri Pirko
027d4ca6f0 netdevsim: assume CONFIG_NET_DEVLINK is always enabled
Since commit f6b19b354d ("net: devlink: select NET_DEVLINK
from drivers") adds implicit select of NET_DEVLINK for
netdevsim, the code does not have to deal with the case
when CONFIG_NET_DEVLINK is not enabled. So remove the ifcase.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-09 11:16:59 -07:00
Jiri Pirko
c3d9a435d9 netdevsim: let net core to free netdevsim netdev
No need to free it ourselves, just set the "needs_free_netdev" flag
and leave the work to net core.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-09 11:16:59 -07:00
Jiri Pirko
7d1df2c978 netdevsim: remove nsim_dellink() implementation
Remove nsim_dellink() implementation. The rtnetlink code sets the
dellink op to unregister_netdevice_queue(), so this is not needed.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-09 11:16:59 -07:00
David S. Miller
310655b07a Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-04-08 23:39:36 -07:00
Linus Torvalds
869e3305f2 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Off by one and bounds checking fixes in NFC, from Dan Carpenter.

 2) There have been many weird regressions in r8169 since we turned ASPM
    support on, some are still not understood nor completely resolved.
    Let's turn this back off for now. From Heiner Kallweit.

 3) Signess fixes for ethtool speed value handling, from Michael
    Zhivich.

 4) Handle timestamps properly in macb driver, from Paul Thomas.

 5) Two erspan fixes, it's the usual "skb ->data potentially reallocated
    and we're holding a stale protocol header pointer". From Lorenzo
    Bianconi.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  bnxt_en: Reset device on RX buffer errors.
  bnxt_en: Improve RX consumer index validity check.
  net: macb driver, check for SKBTX_HW_TSTAMP
  qlogic: qlcnic: fix use of SPEED_UNKNOWN ethtool constant
  broadcom: tg3: fix use of SPEED_UNKNOWN ethtool constant
  ethtool: avoid signed-unsigned comparison in ethtool_validate_speed()
  net: ip6_gre: fix possible use-after-free in ip6erspan_rcv
  net: ip_gre: fix possible use-after-free in erspan_rcv
  r8169: disable ASPM again
  MAINTAINERS: ieee802154: update documentation file pattern
  net: vrf: Fix ping failed when vrf mtu is set to 0
  selftests: add a tc matchall test case
  nfc: nci: Potential off by one in ->pipes[] array
  NFC: nci: Add some bounds checking in nci_hci_cmd_received()
2019-04-08 17:10:46 -10:00
Linus Torvalds
a556810d8e Merge branch 'fixes-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull TPM fixes from James Morris:
 "From Jarkko: These are critical fixes for v5.1. Contains also couple
  of new selftests for v5.1 features (partial reads in /dev/tpm0)"

* 'fixes-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  selftests/tpm2: Open tpm dev in unbuffered mode
  selftests/tpm2: Extend tests to cover partial reads
  KEYS: trusted: fix -Wvarags warning
  tpm: Fix the type of the return value in calc_tpm2_event_size()
  KEYS: trusted: allow trusted.ko to initialize w/o a TPM
  tpm: fix an invalid condition in tpm_common_poll
  tpm: turn on TPM on suspend for TPM 1.x
2019-04-08 17:06:43 -10:00
Linus Torvalds
10d433979f xtensa fixes for v5.1-rc5
- fix syscall number passed to trace_sys_exit;
 - fix syscall number initialization in start_thread;
 - fix level interpretation in the return_address;
 - fix format string warning in init_pmd.
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Merge tag 'xtensa-20190408' of git://github.com/jcmvbkbc/linux-xtensa

Pull xtensa fixes from Max Filippov:

 - fix syscall number passed to trace_sys_exit

 - fix syscall number initialization in start_thread

 - fix level interpretation in the return_address

 - fix format string warning in init_pmd

* tag 'xtensa-20190408' of git://github.com/jcmvbkbc/linux-xtensa:
  xtensa: fix format string warning in init_pmd
  xtensa: fix return_address
  xtensa: fix initialization of pt_regs::syscall in start_thread
  xtensa: use actual syscall number in do_syscall_trace_leave
2019-04-08 17:04:42 -10:00
David S. Miller
e063f45982 Merge branch 'bnxt_en-fixes'
Michael Chan says:

====================
bnxt_en: 2 bug fixes.

The first patch prevents possible driver crash if we get a bad RX index
from the hardware.  The second patch resets the device when the hardware
reports buffer error to recover from the error.

Please queue these for -stable also.  Thanks.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 16:39:41 -07:00
Michael Chan
8e44e96c6c bnxt_en: Reset device on RX buffer errors.
If the RX completion indicates RX buffers errors, the RX ring will be
disabled by firmware and no packets will be received on that ring from
that point on.  Recover by resetting the device.

Fixes: c0c050c58d ("bnxt_en: New Broadcom ethernet driver.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 16:39:41 -07:00
Michael Chan
a1b0e4e684 bnxt_en: Improve RX consumer index validity check.
There is logic to check that the RX/TPA consumer index is the expected
index to work around a hardware problem.  However, the potentially bad
consumer index is first used to index into an array to reference an entry.
This can potentially crash if the bad consumer index is beyond legal
range.  Improve the logic to use the consumer index for dereferencing
after the validity check and log an error message.

Fixes: fa7e28127a ("bnxt_en: Add workaround to detect bad opaque in rx completion (part 2)")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 16:39:41 -07:00
Paul Thomas
a62520473f net: macb driver, check for SKBTX_HW_TSTAMP
Make sure SKBTX_HW_TSTAMP (i.e. SOF_TIMESTAMPING_TX_HARDWARE) has been
enabled for this skb. It does fix the issue where normal socks that
aren't expecting a timestamp will not wake up on select, but when a
user does want a SOF_TIMESTAMPING_TX_HARDWARE it does work.

Signed-off-by: Paul Thomas <pthomas8589@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 16:38:23 -07:00
Michael Zhivich
7f301cff1f ethtool: thunder_bgx: use ethtool.h constants for speed and duplex
Use constants provided by ethtool.h for speed and duplex values
instead of raw integer constants to increase code readability.

thunder_bgx already uses SPEED_UNKNOWN and DUPLEX_UNKNOWN constants,
also provided by ethtool.h.

Signed-off-by: Michael Zhivich <mzhivich@akamai.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 16:37:40 -07:00
Heiner Kallweit
b7f29f8ce1 net: phy: fix setting autoneg_complete in genphy_update_link
The original patch didn't set phydev->autoneg_complete in one exit path.
Fix this.

Fixes: 4950c2ba49 ("net: phy: fix autoneg mismatch case in genphy_read_status")
Reported-by: Simon Horman <horms@verge.net.au>
Tested-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 16:35:52 -07:00
David S. Miller
738de00cda Merge branch 'ethtool-fix-use-of-SPEED_UNKNOWN-constant'
Michael Zhivich says:

====================
ethtool: fix use of SPEED_UNKNOWN constant

This patch series addresses 2 related issues:

1. ethtool_validate_speed() triggers a "signed-unsigned comparison"
warning due to type difference of SPEED_UNKNOWN constant (int)
and argument to ethtool_validate_speed (__u32).

2. some drivers use u16 storage for SPEED_UNKNOWN constant,
resulting in value truncation and thus failure to test against
SPEED_UNKNOWN correctly.

This revised series addresses several feedback comments:
- split up the patch in to series
- do not unnecessarily change drivers that use "int" storage
  for speed values
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 16:30:43 -07:00
Michael Zhivich
d63da85a42 qlogic: qlcnic: fix use of SPEED_UNKNOWN ethtool constant
qlcnic driver uses u16 to store SPEED_UKNOWN ethtool constant,
which is defined as -1, resulting in value truncation and
thus incorrect test results against SPEED_UNKNOWN.

For example, the following test will print "False":

    u16 speed = SPEED_UNKNOWN;

    if (speed == SPEED_UNKNOWN)
        printf("True");
    else
        printf("False");

Change storage of speed to use u32 to avoid this issue.

Signed-off-by: Michael Zhivich <mzhivich@akamai.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 16:30:43 -07:00
Michael Zhivich
caf2c5205d broadcom: tg3: fix use of SPEED_UNKNOWN ethtool constant
tg3 driver uses u16 to store SPEED_UKNOWN ethtool constant,
which is defined as -1, resulting in value truncation and
thus incorrect test results against SPEED_UNKNOWN.

For example, the following test will print "False":

	u16 speed = SPEED_UNKNOWN;

	if (speed == SPEED_UNKNOWN)
	    printf("True");
	else
	    printf("False");

Change storage of speed to use u32 to avoid this issue.

Signed-off-by: Michael Zhivich <mzhivich@akamai.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 16:30:43 -07:00
Michael Zhivich
afe64245af ethtool: avoid signed-unsigned comparison in ethtool_validate_speed()
When building C++ userspace code that includes ethtool.h
with "-Werror -Wall", g++ complains about signed-unsigned comparison in
ethtool_validate_speed() due to definition of SPEED_UNKNOWN as -1.

Explicitly cast SPEED_UNKNOWN to __u32 to match type of
ethtool_validate_speed() argument.

Signed-off-by: Michael Zhivich <mzhivich@akamai.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 16:30:43 -07:00
David S. Miller
13ee7d4973 Merge branch 'mlxsw-Add-support-for-devlink-info-command'
Ido Schimmel says:

====================
mlxsw: Add support for devlink info command

Shalom says:

Expose the following ASIC information via devlink info command:
  - Driver name
  - Hardware revision
  - Firmware PSID
  - Running firmware version

Standard output example:
  $ devlink dev info pci/0000:03:00.0
  pci/0000:03:00.0:
    versions:
        fixed:
          hw.revision A0
          fw.psid MT_2750110033
        running:
          fw.version 13.1910.622

Pretty JSON example:
  $ devlink -jp dev info pci/0000:03:00.0
  {
      "info": {
          "pci/0000:03:00.0": {
              "versions": {
                  "fixed": {
                      "hw.revision": "A0",
                      "fw.psid": "MT_2750110033"
                  },
                  "running": {
                      "fw.version": "13.1910.622"
                  }
              }
          }
      }
  }

v2:
  - Add fw.psid documentation
  - Add driver name
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 16:28:01 -07:00
Shalom Toledo
be0faac952 Documentation: networking: devlink-info-versions: Add fw.psid
Add firmware parameter id (fw.psid).

Signed-off-by: Shalom Toledo <shalomt@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 16:28:01 -07:00
Shalom Toledo
a9c8336f65 mlxsw: core: Add support for devlink info command
Expose the following ASIC information via devlink info command:
  - Driver name
  - Hardware revision
  - Firmware PSID
  - Running firmware version

Standard output example:
  $ devlink dev info pci/0000:03:00.0
  pci/0000:03:00.0:
    driver mlxsw_spectrum
    versions:
        fixed:
          hw.revision A0
          fw.psid MT_2750110033
        running:
          fw.version 13.1910.622

Signed-off-by: Shalom Toledo <shalomt@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 16:28:01 -07:00
Shalom Toledo
8d77d4bfb0 mlxsw: reg: Add MGIR register
Add MGIR register. MGIR, Management General Information Register, allows
software to query the hardware and firmware general information.

Signed-off-by: Shalom Toledo <shalomt@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 16:28:01 -07:00
Kristian Evensen
e4bf63482c qmi_wwan: Add quirk for Quectel dynamic config
Most, if not all, Quectel devices use dynamic interface numbers, and
users are able to change the USB configuration at will. Matching on for
example interface number is therefore not possible.

Instead, the QMI device can be identified by looking at the interface
class, subclass and protocol (all 0xff), as well as the number of
endpoints. The reason we need to look at the number of endpoints, is
that the diagnostic port interface has the same class, subclass and
protocol as QMI. However, the diagnostic port only has two endpoints,
while QMI has three.

Until now, we have identified the QMI device by combining a match on
class, subclass and protocol, with a call to the function
quectel_diag_detect(). In quectel_diag_detect(), we check if the number
of endpoints matches for known Quectel vendor/product ids.

Adding new vendor/product ids to quectel_diag_detect() is not a good
long-term solution. This commit replaces the function with a quirk, and
applies the quirk to affected Quectel devices that I have been able to
test the change with (EP06, EM12 and EC25). If the quirk is set and the
number of endpoints equal two, we return from qmi_wwan_probe() with
-ENODEV.

Signed-off-by: Kristian Evensen <kristian.evensen@gmail.com>
Acked-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 16:25:56 -07:00
Heiner Kallweit
22b56e8270 net: phy: replace genphy_10g_driver with genphy_c45_driver
Recently a number of generic functions for Clause 45 PHY's has been
added. So let's replace the old very limited genphy_10g_driver with a
genphy_c45_driver. This driver isn't limited to 10G, however it's worth
to be noted that Clause 45 doesn't cover 1000Base-T. For using
1000Base-T with a Clause 45 PHY a dedicated PHY driver using vendor
registers is needed.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 16:24:05 -07:00
David S. Miller
3c5189ad70 Merge branch 'erspan-use-after-free'
Lorenzo Bianconi says:

====================
fix possible use-after-free in erspan_v{4,6}

Similar to what I did in commit bb9bd814eb ("ipv6: sit: reset ip
header pointer in ipip6_rcv"), fix possible use-after-free in
erspan_rcv and ip6erspan_rcv extracting tunnel metadata since the
packet can be 'uncloned' running __iptunnel_pull_header
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 16:16:47 -07:00
Lorenzo Bianconi
2a3cabae45 net: ip6_gre: fix possible use-after-free in ip6erspan_rcv
erspan_v6 tunnels run __iptunnel_pull_header on received skbs to remove
erspan header. This can determine a possible use-after-free accessing
pkt_md pointer in ip6erspan_rcv since the packet will be 'uncloned'
running pskb_expand_head if it is a cloned gso skb (e.g if the packet has
been sent though a veth device). Fix it resetting pkt_md pointer after
__iptunnel_pull_header

Fixes: 1d7e2ed22f ("net: erspan: refactor existing erspan code")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 16:16:47 -07:00
Lorenzo Bianconi
492b67e28e net: ip_gre: fix possible use-after-free in erspan_rcv
erspan tunnels run __iptunnel_pull_header on received skbs to remove
gre and erspan headers. This can determine a possible use-after-free
accessing pkt_md pointer in erspan_rcv since the packet will be 'uncloned'
running pskb_expand_head if it is a cloned gso skb (e.g if the packet has
been sent though a veth device). Fix it resetting pkt_md pointer after
__iptunnel_pull_header

Fixes: 1d7e2ed22f ("net: erspan: refactor existing erspan code")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 16:16:47 -07:00
Tadeusz Struk
6da70580af selftests/tpm2: Open tpm dev in unbuffered mode
In order to have control over how many bytes are read or written
the device needs to be opened in unbuffered mode.

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
2019-04-08 15:58:55 -07:00
Tadeusz Struk
f1a0ba6ccc selftests/tpm2: Extend tests to cover partial reads
Three new tests added:
1. Send get random cmd, read header in 1st read, read the rest in second
   read - expect success
2. Send get random cmd, read only part of the response, send another
   get random command, read the response - expect success
3. Send get random cmd followed by another get random cmd, without
   reading the first response - expect the second cmd to fail with -EBUSY

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
2019-04-08 15:58:55 -07:00
ndesaulniers@google.com
be24b37e22 KEYS: trusted: fix -Wvarags warning
Fixes the warning reported by Clang:
security/keys/trusted.c:146:17: warning: passing an object that
undergoes default
      argument promotion to 'va_start' has undefined behavior [-Wvarargs]
        va_start(argp, h3);
                       ^
security/keys/trusted.c:126:37: note: parameter of type 'unsigned
char' is declared here
unsigned char *h2, unsigned char h3, ...)
                               ^
Specifically, it seems that both the C90 (4.8.1.1) and C11 (7.16.1.4)
standards explicitly call this out as undefined behavior:

The parameter parmN is the identifier of the rightmost parameter in
the variable parameter list in the function definition (the one just
before the ...). If the parameter parmN is declared with ... or with a
type that is not compatible with the type that results after
application of the default argument promotions, the behavior is
undefined.

Link: https://github.com/ClangBuiltLinux/linux/issues/41
Link: https://www.eskimo.com/~scs/cclass/int/sx11c.html
Suggested-by: David Laight <David.Laight@aculab.com>
Suggested-by: Denis Kenzior <denkenz@gmail.com>
Suggested-by: James Bottomley <jejb@linux.vnet.ibm.com>
Suggested-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Tested-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
2019-04-08 15:58:54 -07:00
Yue Haibing
b9d0a85d6b tpm: Fix the type of the return value in calc_tpm2_event_size()
calc_tpm2_event_size() has an invalid signature because
it returns a 'size_t' where as its signature says that
it returns 'int'.

Cc: <stable@vger.kernel.org>
Fixes: 4d23cc323c ("tpm: add securityfs support for TPM 2.0 firmware event log")
Suggested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
2019-04-08 15:58:54 -07:00
Jarkko Sakkinen
c78719203f KEYS: trusted: allow trusted.ko to initialize w/o a TPM
Allow trusted.ko to initialize w/o a TPM. This commit also adds checks
to the exported functions to fail when a TPM is not available.

Fixes: 240730437d ("KEYS: trusted: explicitly use tpm_chip structure...")
Cc: James Morris <jmorris@namei.org>
Reported-by: Dan Williams <dan.j.williams@intel.com>
Tested-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
2019-04-08 15:58:53 -07:00
Tadeusz Struk
7110629263 tpm: fix an invalid condition in tpm_common_poll
The poll condition should only check response_length,
because reads should only be issued if there is data to read.
The response_read flag only prevents double writes.
The problem was that the write set the response_read to false,
enqued a tpm job, and returned. Then application called poll
which checked the response_read flag and returned EPOLLIN.
Then the application called read, but got nothing.
After all that the async_work kicked in.
Added also mutex_lock around the poll check to prevent
other possible race conditions.

Fixes: 9488585b21 ("tpm: add support for partial reads")
Reported-by: Mantas Mikulėnas <grawity@gmail.com>
Tested-by: Mantas Mikulėnas <grawity@gmail.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
2019-04-08 15:58:53 -07:00
Jarkko Sakkinen
e891db1a18 tpm: turn on TPM on suspend for TPM 1.x
tpm_chip_start/stop() should be also called for TPM 1.x devices on
suspend. Add that functionality back. Do not lock the chip because
it is unnecessary as there are no multiple threads using it when
doing the suspend.

Fixes: a3fbfae82b ("tpm: take TPM chip power gating out of tpm_transmit()")
Reported-by: Paul Zimmerman <pauldzim@gmail.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Domenico Andreoli <domenico.andreoli@linux.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
2019-04-08 15:58:52 -07:00
David S. Miller
5af82f5205 Merge branch 'hns3-next'
Huazhong Tan says:

====================
code optimizations & bugfixes for HNS3 driver

This patchset includes bugfixes and code optimizations for
the HNS3 ethernet controller driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 15:30:49 -07:00
Huazhong Tan
e233516e6a net: hns3: fix keep_alive_timer not stop problem
When hclgevf_client_start() fails or VF driver unloaded, there is
nobody to disable keep_alive_timer.

So this patch fixes them.

Fixes: a6d818e31d ("net: hns3: Add vport alive state checking support")
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 15:30:49 -07:00
Huazhong Tan
7d60070668 net: hns3: remove resetting check in hclgevf_reset_task_schedule
The checking of HCLGEVF_STATE_RST_HANDLING flag in the
hclgevf_reset_task_schedule() will make some scheduling of
reset pending fail. This flag will be checked in the
hclgevf_reset_service_task(), it is unnecessary to check it
in the hclgevf_reset_task_schedule(). So this patch removes it.

Fixes: 35a1e50343 ("net: hns3: Add VF Reset Service Task to support event handling")
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 15:30:49 -07:00
Huazhong Tan
4339ef396a net: hns3: add error handler for initializing command queue
This patch adds error handler for the failure of command queue
initialization both PF and VF.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 15:30:49 -07:00
Huazhong Tan
18e2488881 net: hns3: stop mailbox handling when command queue need re-init
If the command queue needs re-initialization, the mailbox handling
task should do nothing, otherwise this task will just get some error
print.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 15:30:49 -07:00
Huazhong Tan
cf1f212916 net: hns3: handle pending reset while reset fail
The ongoing lower-level reset will fail when there is a higher-level
reset occurs, so the error handler should deal with this situation.

Fixes: 6a5f6fa382 ("net: hns3: add error handler for hclgevf_reset()")
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 15:30:49 -07:00
Huazhong Tan
4f765d3e52 net: hns3: do not request reset when hardware resetting
When hardware reset does not finish, the driver should not
request a new reset, otherwise the ongoing hardware reset
will get problem.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 15:30:49 -07:00
Huazhong Tan
0fdf4d304c net: hns3: ignore lower-level new coming reset
It is unnecessary to deal with the new coming reset if
it is lower than the ongoing one.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 15:30:49 -07:00
Huazhong Tan
056cbab332 net: hns3: deactive the reset timer when reset successfully
If the reset has been done successfully, the ongoing reset timer
is unnecessary.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 15:30:49 -07:00
Huazhong Tan
eb32c896f1 net: hns3: adjust the timing of hns3_client_stop when unloading
hns3_client_stop() should be called after unregister_netdev(),
otherwise the ongoing reset task may start the client just after it.

Fixes: a6d818e31d ("net: hns3: Add vport alive state checking support")
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 15:30:49 -07:00