Commit Graph

99142 Commits

Author SHA1 Message Date
Thiebaud Weksteen
fd3ec36637 tpm: move tpm_eventlog.h outside of drivers folder
The generic definitions of data structures in tpm_eventlog.h are
required by other part of the kernel (namely, the EFI stub).

Signed-off-by: Thiebaud Weksteen <tweek@google.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
2018-01-08 12:58:34 +02:00
Thomas Gleixner
87590ce6e3 sysfs/cpu: Add vulnerability folder
As the meltdown/spectre problem affects several CPU architectures, it makes
sense to have common way to express whether a system is affected by a
particular vulnerability or not. If affected the way to express the
mitigation should be common as well.

Create /sys/devices/system/cpu/vulnerabilities folder and files for
meltdown, spectre_v1 and spectre_v2.

Allow architectures to override the show function.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Linus Torvalds <torvalds@linuxfoundation.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Link: https://lkml.kernel.org/r/20180107214913.096657732@linutronix.de
2018-01-08 11:10:33 +01:00
Andrey Smirnov
538ee27290 mfd: Add driver for RAVE Supervisory Processor
Add a driver for RAVE Supervisory Processor, an MCU implementing
various bits of housekeeping functionality (watchdoging, backlight
control, LED control, etc) on RAVE family of products by Zodiac
Inflight Innovations.

This driver implementes core MFD/serdev device as well as
communication subroutines necessary for commanding the device.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Acked-by: Philippe Ombredanne <pombredanne@nexb.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Tested-by: Chris Healy <cphealy@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-01-08 10:08:35 +00:00
Andrey Smirnov
2cb67d20cd serdev: Introduce devm_serdev_device_open()
Add code implementing managed version of serdev_device_open() for
serdev device drivers that "open" the device during driver's lifecycle
only once (e.g. opened in .probe() and closed in .remove()).

Acked-by: Philippe Ombredanne <pombredanne@nexb.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-01-08 10:08:34 +00:00
Andrew Morton
0d85adb5fb lib/crc-ccitt: Add CCITT-FALSE CRC16 variant
In support of a soon to be published MFD driver using serdev to talk to
a supervisory processor that uses the CCITT-FALSE CRC16 variant in it's
protocol, this patch was tested successfully on an i.MX6 ARM platform.

Link: http://lkml.kernel.org/r/20170413142932.27287-1-andrew.smirnov@gmail.com
Signed-off-by: Andrey Vostrikov <andrey.vostrikov@cogentembedded.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Tested-by: Chris Healy <cphealy@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-01-08 10:08:33 +00:00
Ido Schimmel
4a8e56ee2c ipv6: Export sernum update function
We are going to allow dead routes to stay in the FIB tree (e.g., when
they are part of a multipath route, directly connected route with no
carrier) and revive them when their nexthop device gains carrier or when
it is put administratively up.

This is equivalent to the addition of the route to the FIB tree and we
should therefore take care of updating the sernum of all the parent
nodes of the node where the route is stored. Otherwise, we risk sockets
caching and using sub-optimal dst entries.

Export the function that performs the above, so that it could be invoked
from fib6_ifup() later on.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-07 21:29:40 -05:00
Ido Schimmel
a2c554d3f8 ipv6: Add explicit flush indication to routes
When routes that are a part of a multipath route are evaluated by
fib6_ifdown() in response to NETDEV_DOWN and NETDEV_UNREGISTER events
the state of their sibling routes is not considered.

This will change in subsequent patches in order to align IPv6 with
IPv4's behavior. For example, when the last sibling in a multipath route
becomes dead, the entire multipath route needs to be removed.

To prevent the tree walker from re-evaluating all the sibling routes
each time, we can simply evaluate them once - when the first sibling is
traversed.

If we determine the entire multipath route needs to be removed, then the
'should_flush' bit is set in all the siblings, which will cause the
walker to flush them when it traverses them.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-07 21:29:40 -05:00
Ido Schimmel
27c6fa73f9 ipv6: Set nexthop flags upon carrier change
Similar to IPv4, when the carrier of a netdev changes we should toggle
the 'linkdown' flag on all the nexthops using it as their nexthop
device.

This will later allow us to test for the presence of this flag during
route lookup and dump.

Up until commit 4832c30d54 ("net: ipv6: put host and anycast routes on
device with address") host and anycast routes used the loopback netdev
as their nexthop device and thus were not marked with the 'linkdown'
flag. The patch preserves this behavior and allows one to ping the local
address even when the nexthop device does not have a carrier and the
'ignore_routes_with_linkdown' sysctl is set.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-07 21:29:40 -05:00
Ido Schimmel
4c981e28d3 ipv6: Prepare to handle multiple netdev events
To make IPv6 more in line with IPv4 we need to be able to respond
differently to different netdev events. For example, when a netdev is
unregistered all the routes using it as their nexthop device should be
flushed, whereas when the netdev's carrier changes only the 'linkdown'
flag should be toggled.

Currently, this is not possible, as the function that traverses the
routing tables is not aware of the triggering event.

Propagate the triggering event down, so that it could be used in later
patches.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-07 21:29:40 -05:00
Ido Schimmel
2127d95aef ipv6: Clear nexthop flags upon netdev up
Previous patch marked nexthops with the 'dead' and 'linkdown' flags.
Clear these flags when the netdev comes back up.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-07 21:29:39 -05:00
David S. Miller
7f0b800048 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:

====================
pull-request: bpf-next 2018-01-07

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

The main changes are:

1) Add a start of a framework for extending struct xdp_buff without
   having the overhead of populating every data at runtime. Idea
   is to have a new per-queue struct xdp_rxq_info that holds read
   mostly data (currently that is, queue number and a pointer to
   the corresponding netdev) which is set up during rxqueue config
   time. When a XDP program is invoked, struct xdp_buff holds a
   pointer to struct xdp_rxq_info that the BPF program can then
   walk. The user facing BPF program that uses struct xdp_md for
   context can use these members directly, and the verifier rewrites
   context access transparently by walking the xdp_rxq_info and
   net_device pointers to load the data, from Jesper.

2) Redo the reporting of offload device information to user space
   such that it works in combination with network namespaces. The
   latter is reported through a device/inode tuple as similarly
   done in other subsystems as well (e.g. perf) in order to identify
   the namespace. For this to work, ns_get_path() has been generalized
   such that the namespace can be retrieved not only from a specific
   task (perf case), but also from a callback where we deduce the
   netns (ns_common) from a netdevice. bpftool support using the new
   uapi info and extensive test cases for test_offload.py in BPF
   selftests have been added as well, from Jakub.

3) Add two bpftool improvements: i) properly report the bpftool
   version such that it corresponds to the version from the kernel
   source tree. So pick the right linux/version.h from the source
   tree instead of the installed one. ii) fix bpftool and also
   bpf_jit_disasm build with bintutils >= 2.9. The reason for the
   build breakage is that binutils library changed the function
   signature to select the disassembler. Given this is needed in
   multiple tools, add a proper feature detection to the
   tools/build/features infrastructure, from Roman.

4) Implement the BPF syscall command BPF_MAP_GET_NEXT_KEY for the
   stacktrace map. It is currently unimplemented, but there are
   use cases where user space needs to walk all stacktrace map
   entries e.g. for dumping or deleting map entries w/o having to
   close and recreate the map. Add BPF selftests along with it,
   from Yonghong.

5) Few follow-up cleanups for the bpftool cgroup code: i) rename
   the cgroup 'list' command into 'show' as we have it for other
   subcommands as well, ii) then alias the 'show' command such that
   'list' is accepted which is also common practice in iproute2,
   and iii) remove couple of newlines from error messages using
   p_err(), from Jakub.

6) Two follow-up cleanups to sockmap code: i) remove the unused
   bpf_compute_data_end_sk_skb() function and ii) only build the
   sockmap infrastructure when CONFIG_INET is enabled since it's
   only aware of TCP sockets at this time, from John.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-07 21:26:31 -05:00
Jan Kara
c0b2462597 dax: pass detailed error code from dax_iomap_fault()
Ext4 needs to pass through error from its iomap handler to the page
fault handler so that it can properly detect ENOSPC and force
transaction commit and retry the fault (and block allocation). Add
argument to dax_iomap_fault() for passing such error.

Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2018-01-07 16:38:43 -05:00
Al Viro
50fd2f298b new primitive: vmemdup_user()
similar to memdup_user(), but does *not* guarantee that result will
be physically contiguous; use only in cases where that's not a requirement
and free it with kvfree().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2018-01-07 13:06:15 -05:00
Linus Torvalds
75d4276e83 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro:

 - untangle sys_close() abuses in xt_bpf

 - deal with register_shrinker() failures in sget()

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fix "netfilter: xt_bpf: Fix XT_BPF_MODE_FD_PINNED mode of 'xt_bpf_info_v1'"
  sget(): handle failures of register_shrinker()
  mm,vmscan: Make unregister_shrinker() no-op if register_shrinker() failed.
2018-01-06 17:13:21 -08:00
Eric Biggers
105f2b7096 eventfd: fold eventfd_ctx_get() into eventfd_ctx_fileget()
eventfd_ctx_get() is not used outside of eventfd.c, so unexport it and
fold it into eventfd_ctx_fileget().

(eventfd_ctx_get() was apparently added years ago for KVM irqfd's, but
was never used.)

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2018-01-06 13:47:20 -05:00
Eric Biggers
b6364572d6 eventfd: fold eventfd_ctx_read() into eventfd_read()
eventfd_ctx_read() is not used outside of eventfd.c, so unexport it and
fold it into eventfd_read().  This slightly simplifies the code and
makes it more analogous to eventfd_write().

(eventfd_ctx_read() was apparently added years ago for KVM irqfd's, but
was never used.)

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2018-01-06 13:47:20 -05:00
Eric Biggers
7d815165c1 eventfd: convert to use anon_inode_getfd()
Nothing actually calls eventfd_file_create() besides the eventfd2()
system call itself.  So simplify things by folding it into the system
call and using anon_inode_getfd() instead of anon_inode_getfile().  This
removes over 40 lines with no change in functionality.

(eventfd_file_create() was apparently added years ago for KVM irqfd's,
but was never used.)

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2018-01-06 13:47:20 -05:00
Bart Van Assche
e80a0af475 lib/scatterlist: Introduce sgl_alloc() and sgl_free()
Many kernel drivers contain code that allocates and frees both a
scatterlist and the pages that populate that scatterlist.
Introduce functions in lib/scatterlist.c that perform these tasks
instead of duplicating this functionality in multiple drivers.
Only include these functions in the build if CONFIG_SGL_ALLOC=y
to avoid that the kernel size increases if this functionality is
not used.

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-01-06 09:18:00 -07:00
Ming Lei
25d8be77e1 block: move bio_alloc_pages() to bcache
bcache is the only user of bio_alloc_pages(), so move this function into
bcache, and avoid it being misused in the future.

Also rename it to bch_bio_allo_pages() since it is bcache only.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-01-06 09:18:00 -07:00
Ming Lei
3c892a098b block: bounce: don't access bio->bi_io_vec in copy_to_high_bio_irq
Firstly this patch introduces BVEC_ITER_ALL_INIT for iterating one bio
from start to end.

As we need to support multipage bvecs, don't access bio->bi_io_vec
in copy_to_high_bio_irq(), and just use the standard iterator for that.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-01-06 09:18:00 -07:00
Ming Lei
86292abc5a block: introduce bio helpers for converting to multipage bvec
The following helpers are introduced for converting current users of
direct access to bvec table, and prepares for supporting multipage bvec:

	bio_pages_all()
	bio_first_bvec_all()
	bio_first_page_all()
	bio_last_bvec_all()

All are named as bio_*_all() to following bio_for_each_segment_all(),
they can only be used on bio of !bio_flagged(bio, BIO_CLONED), that means
the whole bvec table is covered.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-01-06 09:18:00 -07:00
Boris Brezillon
f72071b892 mtd: Add an helper to make erase request aligned on ->erasesize
There's currently nothing forcing alignment of einfo->addr and
einfo->len on mtd->erasesize. Since we don't know if automatically
aligning those field in mtd_erase() will hurt some drivers, we add an
helper function to let drivers that need such an alignment explicitly
ask for it.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reviewed-by: Miquel Raynal <miquel.raynal@free-electrons.com>
2018-01-06 15:09:54 +01:00
Jesper Dangaard Brouer
02dd3291b2 bpf: finally expose xdp_rxq_info to XDP bpf-programs
Now all XDP driver have been updated to setup xdp_rxq_info and assign
this to xdp_buff->rxq.  Thus, it is now safe to enable access to some
of the xdp_rxq_info struct members.

This patch extend xdp_md and expose UAPI to userspace for
ingress_ifindex and rx_queue_index.  Access happens via bpf
instruction rewrite, that load data directly from struct xdp_rxq_info.

* ingress_ifindex map to xdp_rxq_info->dev->ifindex
* rx_queue_index  map to xdp_rxq_info->queue_index

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-01-05 15:21:22 -08:00
Jesper Dangaard Brouer
e817f85652 xdp: generic XDP handling of xdp_rxq_info
Hook points for xdp_rxq_info:
 * reg  : netif_alloc_rx_queues
 * unreg: netif_free_rx_queues

The net_device have some members (num_rx_queues + real_num_rx_queues)
and data-area (dev->_rx with struct netdev_rx_queue's) that were
primarily used for exporting information about RPS (CONFIG_RPS) queues
to sysfs (CONFIG_SYSFS).

For generic XDP extend struct netdev_rx_queue with the xdp_rxq_info,
and remove some of the CONFIG_SYSFS ifdefs.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-01-05 15:21:22 -08:00
Jesper Dangaard Brouer
c0124f327e xdp/qede: setup xdp_rxq_info and intro xdp_rxq_info_is_reg
The driver code qede_free_fp_array() depend on kfree() can be called
with a NULL pointer. This stems from the qede_alloc_fp_array()
function which either (kz)alloc memory for fp->txq or fp->rxq.
This also simplifies error handling code in case of memory allocation
failures, but xdp_rxq_info_unreg need to know the difference.

Introduce xdp_rxq_info_is_reg() to handle if a memory allocation fails
and detect this is the failure path by seeing that xdp_rxq_info was
not registred yet, which first happens after successful alloaction in
qede_init_fp().

Driver hook points for xdp_rxq_info:
 * reg  : qede_init_fp
 * unreg: qede_free_fp_array

Tested on actual hardware with samples/bpf program.

V2: Driver have no proper error path for failed XDP RX-queue info reg, as
qede_init_fp() is a void function.

Cc: everest-linux-l2@cavium.com
Cc: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-01-05 15:21:21 -08:00
Jesper Dangaard Brouer
aecd67b607 xdp: base API for new XDP rx-queue info concept
This patch only introduce the core data structures and API functions.
All XDP enabled drivers must use the API before this info can used.

There is a need for XDP to know more about the RX-queue a given XDP
frames have arrived on.  For both the XDP bpf-prog and kernel side.

Instead of extending xdp_buff each time new info is needed, the patch
creates a separate read-mostly struct xdp_rxq_info, that contains this
info.  We stress this data/cache-line is for read-only info.  This is
NOT for dynamic per packet info, use the data_meta for such use-cases.

The performance advantage is this info can be setup at RX-ring init
time, instead of updating N-members in xdp_buff.  A possible (driver
level) micro optimization is that xdp_buff->rxq assignment could be
done once per XDP/NAPI loop.  The extra pointer deref only happens for
program needing access to this info (thus, no slowdown to existing
use-cases).

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-01-05 15:21:20 -08:00
Linus Torvalds
b03acc4cc2 Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI updates from Thomas Gleixner:

 - A fix for a add_efi_memmap parameter regression which ensures that
   the parameter is parsed before it is used.

 - Reinstate the virtual capsule mapping as the cached copy turned out
   to break Quark and other things

 - Remove Matt Fleming as EFI co-maintainer. He stepped back a few days
   ago. Thanks Matt for all your great work!

* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  MAINTAINERS: Remove Matt Fleming as EFI co-maintainer
  efi/capsule-loader: Reinstate virtual capsule mapping
  x86/efi: Fix kernel param add_efi_memmap regression
2018-01-05 12:20:35 -08:00
Linus Torvalds
64648a5fca Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
 "This fixes the following issues:

   - racy use of ctx->rcvused in af_alg

   - algif_aead crash in chacha20poly1305

   - freeing bogus pointer in pcrypt

   - build error on MIPS in mpi

   - memory leak in inside-secure

   - memory overwrite in inside-secure

   - NULL pointer dereference in inside-secure

   - state corruption in inside-secure

   - build error without CRYPTO_GF128MUL in chelsio

   - use after free in n2"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: inside-secure - do not use areq->result for partial results
  crypto: inside-secure - fix request allocations in invalidation path
  crypto: inside-secure - free requests even if their handling failed
  crypto: inside-secure - per request invalidation
  lib/mpi: Fix umul_ppmm() for MIPS64r6
  crypto: pcrypt - fix freeing pcrypt instances
  crypto: n2 - cure use after free
  crypto: af_alg - Fix race around ctx->rcvused by making it atomic_t
  crypto: chacha20poly1305 - validate the digest size
  crypto: chelsio - select CRYPTO_GF128MUL
2018-01-05 12:10:06 -08:00
Geert Uytterhoeven
f347c36701 of/fdt: Fix #ifdef dependency of early flattree declarations
If OF_FLATTREE=y, but OF_EARLY_FLATTREE=n:

    drivers/tty/serial/earlycon.o: In function `param_setup_earlycon':
    earlycon.c:(.init.text+0x3a4): undefined reference to `early_init_dt_scan_chosen_stdout'

Fix this by moving the early flattree forward declarations and dummy
implementations inside an #ifdef CONFIG_OF_EARLY_FLATTREE block.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rob Herring <robh@kernel.org>
2018-01-05 13:04:30 -06:00
Sergei Shtylyov
5133550296 sh_eth: fix SH7757 GEther initialization
Renesas  SH7757 has 2 Fast and 2 Gigabit Ether controllers, while the
'sh_eth' driver can only reset and initialize TSU of the first controller
pair. Shimoda-san tried to solve that adding the 'needs_init' member to the
'struct sh_eth_plat_data', however the platform code still never sets this
flag. I think  that we can infer this information from the 'devno' variable
(set  to 'platform_device::id') and reset/init the Ether controller pair
only for an even 'devno'; therefore 'sh_eth_plat_data::needs_init' can be
removed...

Fixes: 150647fb2c ("net: sh_eth: change the condition of initialization")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-05 13:59:18 -05:00
Michael J. Ruhl
06f2597f75 IB/{rdmavt, hfi1, qib}: Remove get_card_name() downcall
rdmavt has a down call to client drivers to retrieve a crafted card
name.

This name should be the IB defined name.

Rather than craft the name each time it is needed, simply retrieve
the IB allocated name from the IB device.

Update the function name to reflect its application.

Clean up driver code to match this change.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-05 13:34:55 -05:00
Michael J. Ruhl
5084c8ff21 IB/{rdmavt, hfi1, qib}: Self determine driver name
Currently the HFI and QIB drivers allow the IB core to assign a unit
number to the driver name string.

If multiple devices exist in a system, there is a possibility that the
device unit number and the IB core number will be mismatched.

Fix by using the driver defined unit number to generate the device
name.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-05 13:34:55 -05:00
Al Viro
8e6c848ece new primitive: vfs_mkobj()
Similar to vfs_create(), but with caller-supplied callback (and
argument for it) to be used instead of ->create().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2018-01-05 11:53:07 -05:00
Al Viro
040ee69226 fix "netfilter: xt_bpf: Fix XT_BPF_MODE_FD_PINNED mode of 'xt_bpf_info_v1'"
Descriptor table is a shared object; it's not a place where you can
stick temporary references to files, especially when we don't need
an opened file at all.

Cc: stable@vger.kernel.org # v4.14
Fixes: 98589a0998 ("netfilter: xt_bpf: Fix XT_BPF_MODE_FD_PINNED mode of 'xt_bpf_info_v1'")
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2018-01-05 11:43:39 -05:00
Christoph Hellwig
6cc77e9cb0 block: introduce zoned block devices zone write locking
Components relying only on the request_queue structure for accessing
block devices (e.g. I/O schedulers) have a limited knowledged of the
device characteristics. In particular, the device capacity cannot be
easily discovered, which for a zoned block device also result in the
inability to easily know the number of zones of the device (the zone
size is indicated by the chunk_sectors field of the queue limits).

Introduce the nr_zones field to the request_queue structure to simplify
access to this information. Also, add the bitmap seq_zone_bitmap which
indicates which zones of the device are sequential zones (write
preferred or write required) and the bitmap seq_zones_wlock which
indicates if a zone is write locked, that is, if a write request
targeting a zone was dispatched to the device. These fields are
initialized by the low level block device driver (sd.c for ZBC/ZAC
disks). They are not initialized by stacking drivers (device mappers)
handling zoned block devices (e.g. dm-linear).

Using this, I/O schedulers can introduce zone write locking to control
request dispatching to a zoned block device and avoid write request
reordering by limiting to at most a single write request per zone
outside of the scheduler at any time.

Based on previous patches from Damien Le Moal.

Signed-off-by: Christoph Hellwig <hch@lst.de>
[Damien]
* Fixed comments and identation in blkdev.h
* Changed helper functions
* Fixed this commit message
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-01-05 09:22:17 -07:00
Quentin Monnet
33c30a8b68 net: sched: fix tcf_block_get_ext() in case CONFIG_NET_CLS is not set
The definition of functions tcf_block_get() and tcf_block_get_ext()
depends of CONFIG_NET_CLS being set. When those functions gained extack
support, only one version of the declaration of those functions was
updated. Function tcf_block_get() was later fixed with commit
3c1490913f ("net: sch: api: fix tcf_block_get").

Change arguments of tcf_block_get_ext() for the case when CONFIG_NET_CLS
is not set.

Fixes: 8d1a77f974 ("net: sch: api: add extack support in tcf_block_get")
Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-05 11:18:27 -05:00
Arnd Bergmann
b55eb1ae91 Merge tag 'aspeed-4.16-devicetree' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/joel/aspeed into next/dt
Pull "ASPEED device tree updates for 4.16" from Joel Stanley:

Clock driver support:

 Rework all platforms to use proper clock bindings. Linux should now boot
 upstream kernels on ast2400 and ast2500 platforms without out of tree
 patches.

New systems:

 Witherspoon: OpenPower Power9 server manufactured by IBM that uses the ASPEED ast2500
 Zaius: OpenPower Power9 server manufactured by Invatech that uses the ASPEED ast2500
 Q71L: Intel Xeon server manufactured by Qanta that uses the ASPEED ast2400

 We also see updates to the Palmetto and Romulus systems to bring them in
 line with the functionality of those above.

 The systems take advantage of recently added drivers for LPC Snoop
 device and the PWM/Tachometer fan controller.

OpenBMC flash layout:

 The flash layout used OpenBMC systems is added and the device trees now
 use it.

* tag 'aspeed-4.16-devicetree' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/joel/aspeed:
  ARM: dts: aspeed-evb: Add unit name to memory node
  ARM: dts: aspeed-plametto: Add flash layout and fix memory node
  ARM: dts: aspeed-romulus: Update Romulus system
  ARM: dts: aspeed: Add Qanta Q71L BMC machine
  ARM: dts: aspeed: Add Ingrasys Zaius BMC machine
  ARM: dts: aspeed: Add Witherspoon BMC machine
  ARM: dts: aspeed: Sort ASPEED entries in makefile
  ARM: dts: Add OpenBMC flash layout
  ARM: dts: aspeed: Update license headers
  ARM: dts: aspeed: Remove skeleton.dtsi
  ARM: dts: aspeed: Add LPC Snoop device
  ARM: dts: aspeed: Add PWM and tachometer node
  ARM: dts: aspeed: Add clock phandle to GPIO
  ARM: dts: aspeed: Add flash controller clocks
  ARM: dts: aspeed: Add watchdog clocks
  ARM: dts: aspeed: Add MAC clocks
  ARM: dts: aspeed: Add proper clock references
  ARM: dts: aspeed: Add LPC and child devices
  dt-bindings: gpio: Add ASPEED constants
  dt-bindings: clock: Add ASPEED constants

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-01-05 17:06:04 +01:00
James Chapman
4887d8933a l2tp: add comment in API header that L2TP_ATTR_OFFSET is not used
Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-05 11:03:26 -05:00
James Chapman
863def15b9 l2tp: revert "l2tp: add peer_offset parameter"
Revert commit f15bc54eee ("l2tp: add peer_offset parameter"). This
is removed because it is adding another configurable offset and
configurable offsets are being removed.

Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-05 11:03:04 -05:00
Javier González
e53927393b lightnvm: set target over-provision on create ioctl
Allow to set the over-provision percentage on target creation. In case
that the value is not provided, fall back to the default value set by
the target.

In pblk, set the default OP to 11% of the total size of the device

Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Hans Holmberg <hans.holmberg@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-01-05 08:50:12 -07:00
Matias Bjørling
fae7fae407 lightnvm: make geometry structures 2.0 ready
Prepare for the 2.0 revision by adapting the geometry
structures to coexist with the 1.2 revision.

Signed-off-by: Matias Bjørling <m@bjorling.me>
Reviewed-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-01-05 08:50:12 -07:00
Matias Bjørling
bb27aa9ecd lightnvm: remove lower page tables
The lower page table is unused. All page tables reported by 1.2
devices are all reporting a sequential 1:1 page mapping. This is
also not used going forward with the 2.0 revision.

Signed-off-by: Matias Bjørling <m@bjorling.me>
Reviewed-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-01-05 08:50:12 -07:00
Javier González
98281a90ac lightnvm: remove unnecessary field from nvm_rq
Remove the wait filed in nvm_rq. It is not used anymore, as targets rely
on the functionality provided by the LightNVM subsystem when sending
sync I/O.

Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-01-05 08:50:12 -07:00
Matias Bjørling
e3e13bcc14 lightnvm: remove hybrid ocssd 1.2 support
Now that rrpc have been removed. Also remove the hybrid 1.2 support
from the core.

Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-01-05 08:50:12 -07:00
Matias Bjørling
26f76dce60 lightnvm: use internal pblk methods
Now that rrpc has been removed, the only users of the ppa helpers
is pblk. However, pblk already defines similar functions.

Switch pblk to use the internal ones, and remove the generic ppa
helpers.

Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-01-05 08:50:12 -07:00
David S. Miller
f737be8d61 Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains Netfilter fixes for your net tree,
they are:

1) Fix chain filtering when dumping rules via nf_tables_dump_rules().

2) Fix accidental change in NF_CT_STATE_UNTRACKED_BIT through uapi,
   introduced when removing the untracked conntrack object, from
   Florian Westphal.

3) Fix potential nul-dereference when releasing dump filter in
   nf_tables_dump_obj_done(), patch from Hangbin Liu.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-05 10:33:01 -05:00
Mark Brown
7f4b875032 Merge remote-tracking branches 'asoc/topic/sun4i-i2s', 'asoc/topic/sunxi', 'asoc/topic/symmetry', 'asoc/topic/tas5720' and 'asoc/topic/tas6424' into asoc-next 2018-01-05 12:44:06 +00:00
Mark Brown
8c7014c66b Merge remote-tracking branches 'asoc/topic/rl6231', 'asoc/topic/rt5514' and 'asoc/topic/rt5645' into asoc-next 2018-01-05 12:44:00 +00:00
Mark Brown
2f1eceda4d Merge remote-tracking branches 'asoc/topic/fsl', 'asoc/topic/fsl-ssi', 'asoc/topic/fsl_asrc' and 'asoc/topic/hdac_hdmi' into asoc-next 2018-01-05 12:43:47 +00:00
Mark Brown
747c908427 Merge remote-tracking branches 'asoc/topic/dai-drv', 'asoc/topic/davinci', 'asoc/topic/disconnect', 'asoc/topic/ep93xx' and 'asoc/topic/eukrea-tlv320' into asoc-next 2018-01-05 12:43:44 +00:00