Commit Graph

33486 Commits

Author SHA1 Message Date
Eric Dumazet
648700f76b inet: frags: use rhashtables for reassembly units
Some applications still rely on IP fragmentation, and to be fair linux
reassembly unit is not working under any serious load.

It uses static hash tables of 1024 buckets, and up to 128 items per bucket (!!!)

A work queue is supposed to garbage collect items when host is under memory
pressure, and doing a hash rebuild, changing seed used in hash computations.

This work queue blocks softirqs for up to 25 ms when doing a hash rebuild,
occurring every 5 seconds if host is under fire.

Then there is the problem of sharing this hash table for all netns.

It is time to switch to rhashtables, and allocate one of them per netns
to speedup netns dismantle, since this is a critical metric these days.

Lookup is now using RCU. A followup patch will even remove
the refcount hold/release left from prior implementation and save
a couple of atomic operations.

Before this patch, 16 cpus (16 RX queue NIC) could not handle more
than 1 Mpps frags DDOS.

After the patch, I reach 9 Mpps without any tuning, and can use up to 2GB
of storage for the fragments (exact number depends on frags being evicted
after timeout)

$ grep FRAG /proc/net/sockstat
FRAG: inuse 1966916 memory 2140004608

A followup patch will change the limits for 64bit arches.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Kirill Tkhai <ktkhai@virtuozzo.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Florian Westphal <fw@strlen.de>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Alexander Aring <alex.aring@gmail.com>
Cc: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-31 23:25:39 -04:00
Martin Blumenstingl
a5af1fb94f dt-bindings: net: meson-dwmac: add support for the Meson8m2 SoC
The Meson8m2 SoC uses a similar (potentially even identical) register
layout for the dwmac glue as Meson8b and GXBB. Unfortunately there is no
documentation available.
Testing shows that both, RMII and RGMII PHYs are working if they are
configured as on Meson8b. Add a new compatible string to the
documentation so differences (if there are any) between Meson8m2 and the
other SoCs can be taken care of within the driver.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-31 22:17:23 -04:00
Biju Das
9b85756341 dt-bindings: net: renesas-ravb: Add support for r8a77470 SoC
Add a new compatible string for the RZ/G1C (R8A77470) SoC.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-30 12:32:48 -04:00
Lorenzo Bianconi
2f0aaf7fb1 Documentation: ip-sysctl.txt: clarify disable_ipv6
Clarify that when disable_ipv6 is enabled even the ipv6 routes
are deleted for the selected interface and from now it will not
be possible to add addresses/routes to that interface

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-30 12:20:52 -04:00
David S. Miller
d162190bde Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
Pablo Neira Ayuso says:

====================
Netfilter/IPVS updates for net-next

The following patchset contains Netfilter/IPVS updates for your net-next
tree. This batch comes with more input sanitization for xtables to
address bug reports from fuzzers, preparation works to the flowtable
infrastructure and assorted updates. In no particular order, they are:

1) Make sure userspace provides a valid standard target verdict, from
   Florian Westphal.

2) Sanitize error target size, also from Florian.

3) Validate that last rule in basechain matches underflow/policy since
   userspace assumes this when decoding the ruleset blob that comes
   from the kernel, from Florian.

4) Consolidate hook entry checks through xt_check_table_hooks(),
   patch from Florian.

5) Cap ruleset allocations at 512 mbytes, 134217728 rules and reject
   very large compat offset arrays, so we have a reasonable upper limit
   and fuzzers don't exercise the oom-killer. Patches from Florian.

6) Several WARN_ON checks on xtables mutex helper, from Florian.

7) xt_rateest now has a hashtable per net, from Cong Wang.

8) Consolidate counter allocation in xt_counters_alloc(), from Florian.

9) Earlier xt_table_unlock() call in {ip,ip6,arp,eb}tables, patch
   from Xin Long.

10) Set FLOW_OFFLOAD_DIR_* to IP_CT_DIR_* definitions, patch from
    Felix Fietkau.

11) Consolidate code through flow_offload_fill_dir(), also from Felix.

12) Inline ip6_dst_mtu_forward() just like ip_dst_mtu_maybe_forward()
    to remove a dependency with flowtable and ipv6.ko, from Felix.

13) Cache mtu size in flow_offload_tuple object, this is safe for
    forwarding as f87c10a8aa describes, from Felix.

14) Rename nf_flow_table.c to nf_flow_table_core.o, to simplify too
    modular infrastructure, from Felix.

15) Add rt0, rt2 and rt4 IPv6 routing extension support, patch from
    Ahmed Abdelsalam.

16) Remove unused parameter in nf_conncount_count(), from Yi-Hung Wei.

17) Support for counting only to nf_conncount infrastructure, patch
    from Yi-Hung Wei.

18) Add strict NFT_CT_{SRC_IP,DST_IP,SRC_IP6,DST_IP6} key datatypes
    to nft_ct.

19) Use boolean as return value from ipt_ah and from IPVS too, patch
    from Gustavo A. R. Silva.

20) Remove useless parameters in nfnl_acct_overquota() and
    nf_conntrack_broadcast_help(), from Taehee Yoo.

21) Use ipv6_addr_is_multicast() from xt_cluster, also from Taehee Yoo.

22) Statify nf_tables_obj_lookup_byhandle, patch from Fengguang Wu.

23) Fix typo in xt_limit, from Geert Uytterhoeven.

24) Do no use VLAs in Netfilter code, again from Gustavo.

25) Use ADD_COUNTER from ebtables, from Taehee Yoo.

26) Bitshift support for CONNMARK and MARK targets, from Jack Ma.

27) Use pr_*() and add pr_fmt(), from Arushi Singhal.

28) Add synproxy support to ctnetlink.

29) ICMP type and IGMP matching support for ebtables, patches from
    Matthias Schiffer.

30) Support for the revision infrastructure to ebtables, from
    Bernie Harris.

31) String match support for ebtables, also from Bernie.

32) Documentation for the new flowtable infrastructure.

33) Use generic comparison functions in ebt_stp, from Joe Perches.

34) Demodularize filter chains in nftables.

35) Register conntrack hooks in case nftables NAT chain is added.

36) Merge assignments with return in a couple of spots in the
    Netfilter codebase, also from Arushi.

37) Document that xtables percpu counters are stored in the same
    memory area, from Ben Hutchings.

38) Revert mark_source_chains() sanity checks that break existing
    rulesets, from Florian Westphal.

39) Use is_zero_ether_addr() in the ipset codebase, from Joe Perches.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-30 11:41:18 -04:00
Mike Looijmans
9217e566bd of_net: Implement of_get_nvmem_mac_address helper
It's common practice to store MAC addresses for network interfaces into
nvmem devices. However the code to actually do this in the kernel lacks,
so this patch adds of_get_nvmem_mac_address() for drivers to obtain the
address from an nvmem cell provider.

This is particulary useful on devices where the ethernet interface cannot
be configured by the bootloader, for example because it's in an FPGA.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-30 10:40:18 -04:00
Pablo Neira Ayuso
19b351f16f netfilter: add flowtable documentation
This patch adds initial documentation for the Netfilter flowtable
infrastructure.

Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2018-03-30 11:04:41 +02:00
Moritz Fischer
75530a78de dt-bindings: net: Add bindings for National Instruments XGE netdev
This adds bindings for the NI XGE 1G/10G network device.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-29 11:50:59 -04:00
David S. Miller
34fd03b9e6 Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue
Jeff Kirsher says:

====================
100GbE Intel Wired LAN Driver Updates 2018-03-26

This patch series adds the ice driver, which will support the Intel(R)
E800 Series of network devices.

This is the first phase in the release of this driver where we implement
basic transmit and receive. The idea behind the multi-phase release is to
aid in code review as well as testing. Subsequent phases will implement
advanced features (like SR-IOV, tunnelling, flow director, QoS, etc.) that
build upon the previous phase(s). Each phase will be submitted as a patch
series.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-26 18:20:02 -04:00
Richard Cochran
93e9ad9850 ptp: Fix documentation to match code.
Ever since commit 3a06c7ac24 ("posix-clocks: Remove interval timer
facility and mmap/fasync callbacks") the possibility of PHC based
posix timers has been removed.  In addition it will probably never
make sense to implement this functionality.

This patch removes the misleading text which seems to suggest that
posix timers for PHC devices will ever be a thing.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-26 12:13:21 -04:00
Kunihiko Hayashi
8396764154 dt-bindings: net: ave: add PXs3 support
Add a compatible string for ethernet controller on UniPhier PXs3 SoC.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-26 11:29:10 -04:00
Anirudh Venkataramanan
837f08fdec ice: Add basic driver framework for Intel(R) E800 Series
This patch adds a basic driver framework for the Intel(R) E800 Ethernet
Series of network devices. There is no functionality right now other than
the ability to load.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2018-03-26 08:28:02 -07:00
Dave Watson
b6c535b163 tls: Add receive path documentation
Add documentation on rx path setup and cmsg interface.

Signed-off-by: Dave Watson <davejwatson@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-23 12:25:54 -04:00
David S. Miller
03fe2debbb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Fun set of conflict resolutions here...

For the mac80211 stuff, these were fortunately just parallel
adds.  Trivially resolved.

In drivers/net/phy/phy.c we had a bug fix in 'net' that moved the
function phy_disable_interrupts() earlier in the file, whilst in
'net-next' the phy_error() call from this function was removed.

In net/ipv4/xfrm4_policy.c, David Ahern's changes to remove the
'rt_table_id' member of rtable collided with a bug fix in 'net' that
added a new struct member "rt_mtu_locked" which needs to be copied
over here.

The mlxsw driver conflict consisted of net-next separating
the span code and definitions into separate files, whilst
a 'net' bug fix made some changes to that moved code.

The mlx5 infiniband conflict resolution was quite non-trivial,
the RDMA tree's merge commit was used as a guide here, and
here are their notes:

====================

    Due to bug fixes found by the syzkaller bot and taken into the for-rc
    branch after development for the 4.17 merge window had already started
    being taken into the for-next branch, there were fairly non-trivial
    merge issues that would need to be resolved between the for-rc branch
    and the for-next branch.  This merge resolves those conflicts and
    provides a unified base upon which ongoing development for 4.17 can
    be based.

    Conflicts:
            drivers/infiniband/hw/mlx5/main.c - Commit 42cea83f95
            (IB/mlx5: Fix cleanup order on unload) added to for-rc and
            commit b5ca15ad7e (IB/mlx5: Add proper representors support)
            add as part of the devel cycle both needed to modify the
            init/de-init functions used by mlx5.  To support the new
            representors, the new functions added by the cleanup patch
            needed to be made non-static, and the init/de-init list
            added by the representors patch needed to be modified to
            match the init/de-init list changes made by the cleanup
            patch.
    Updates:
            drivers/infiniband/hw/mlx5/mlx5_ib.h - Update function
            prototypes added by representors patch to reflect new function
            names as changed by cleanup patch
            drivers/infiniband/hw/mlx5/ib_rep.c - Update init/de-init
            stage list to match new order from cleanup patch
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-23 11:31:58 -04:00
Linus Torvalds
9ec7ccc8f4 core, i915, amdgpu, imx, sun4i, ast, tegra, vmwgfx fixes.
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Merge tag 'drm-fixes-for-v4.16-rc7' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "A bunch of fixes all over the place (core, i915, amdgpu, imx, sun4i,
  ast, tegra, vmwgfx), nothing too serious or worrying at this stage.

   - one uapi fix to stop multi-planar images with getfb

   - Sun4i error path and clock fixes

   - udl driver mmap offset fix

   - i915 DP MST and GPU reset fixes

   - vmwgfx mutex and black screen fixes

   - imx array underflow fix and vblank fix

   - amdgpu: display fixes

   - exynos devicetree fix

   - ast mode fix"

* tag 'drm-fixes-for-v4.16-rc7' of git://people.freedesktop.org/~airlied/linux: (29 commits)
  drm/ast: Fixed 1280x800 Display Issue
  drm: udl: Properly check framebuffer mmap offsets
  drm/i915: Specify which engines to reset following semaphore/event lockups
  drm/vmwgfx: Fix a destoy-while-held mutex problem.
  drm/vmwgfx: Fix black screen and device errors when running without fbdev
  drm: Reject getfb for multi-plane framebuffers
  drm/amd/display: Add one to EDID's audio channel count when passing to DC
  drm/amd/display: We shouldn't set format_default on plane as atomic driver
  drm/amd/display: Fix FMT truncation programming
  drm/amd/display: Allow truncation to 10 bits
  drm/sun4i: hdmi: Fix another error handling path in 'sun4i_hdmi_bind()'
  drm/sun4i: hdmi: Fix an error handling path in 'sun4i_hdmi_bind()'
  drm/i915/dp: Write to SET_POWER dpcd to enable MST hub.
  drm/amd/display: fix dereferencing possible ERR_PTR()
  drm/amd/display: Refine disable VGA
  drm/tegra: Shutdown on driver unbind
  drm/tegra: dsi: Don't disable regulator on ->exit()
  drm/tegra: dc: Detach IOMMU group from domain only once
  dt-bindings: exynos: Document #sound-dai-cells property of the HDMI node
  drm/imx: move arming of the vblank event to atomic_flush
  ...
2018-03-22 17:37:44 -07:00
Linus Torvalds
c4f4d2f917 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Always validate XFRM esn replay attribute, from Florian Westphal.

 2) Fix RCU read lock imbalance in xfrm_get_tos(), from Xin Long.

 3) Don't try to get firmware dump if not loaded in iwlwifi, from Shaul
    Triebitz.

 4) Fix BPF helpers to deal with SCTP GSO SKBs properly, from Daniel
    Axtens.

 5) Fix some interrupt handling issues in e1000e driver, from Benjamin
    Poitier.

 6) Use strlcpy() in several ethtool get_strings methods, from Florian
    Fainelli.

 7) Fix rhlist dup insertion, from Paul Blakey.

 8) Fix SKB leak in netem packet scheduler, from Alexey Kodanev.

 9) Fix driver unload crash when link is up in smsc911x, from Jeremy
    Linton.

10) Purge out invalid socket types in l2tp_tunnel_create(), from Eric
    Dumazet.

11) Need to purge the write queue when TCP connections are aborted,
    otherwise userspace using MSG_ZEROCOPY can't close the fd. From
    Soheil Hassas Yeganeh.

12) Fix double free in error path of team driver, from Arkadi
    Sharshevsky.

13) Filter fixes for hv_netvsc driver, from Stephen Hemminger.

14) Fix non-linear packet access in ipv6 ndisc code, from Lorenzo
    Bianconi.

15) Properly filter out unsupported feature flags in macvlan driver,
    from Shannon Nelson.

16) Don't request loading the diag module for a protocol if the protocol
    itself is not even registered. From Xin Long.

17) If datagram connect fails in ipv6, make sure the socket state is
    consistent afterwards. From Paolo Abeni.

18) Use after free in qed driver, from Dan Carpenter.

19) If received ipv4 PMTU is less than the min pmtu, lock the mtu in the
    entry. From Sabrina Dubroca.

20) Fix sleep in atomic in tg3 driver, from Jonathan Toppins.

21) Fix vlan in vlan untagging in some situations, from Toshiaki Makita.

22) Fix double SKB free in genlmsg_mcast(). From Nicolas Dichtel.

23) Fix NULL derefs in error paths of tcf_*_init(), from Davide Caratti.

24) Unbalanced PM runtime calls in FEC driver, from Florian Fainelli.

25) Memory leak in gemini driver, from Igor Pylypiv.

26) IDR leaks in error paths of tcf_*_init() functions, from Davide
    Caratti.

27) Need to use GFP_ATOMIC in seg6_build_state(), from David Lebrun.

28) Missing dev_put() in error path of macsec_newlink(), from Dan
    Carpenter.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (201 commits)
  macsec: missing dev_put() on error in macsec_newlink()
  net: dsa: Fix functional dsa-loop dependency on FIXED_PHY
  hv_netvsc: common detach logic
  hv_netvsc: change GPAD teardown order on older versions
  hv_netvsc: use RCU to fix concurrent rx and queue changes
  hv_netvsc: disable NAPI before channel close
  net/ipv6: Handle onlink flag with multipath routes
  ppp: avoid loop in xmit recursion detection code
  ipv6: sr: fix NULL pointer dereference when setting encap source address
  ipv6: sr: fix scheduling in RCU when creating seg6 lwtunnel state
  net: aquantia: driver version bump
  net: aquantia: Implement pci shutdown callback
  net: aquantia: Allow live mac address changes
  net: aquantia: Add tx clean budget and valid budget handling logic
  net: aquantia: Change inefficient wait loop on fw data reads
  net: aquantia: Fix a regression with reset on old firmware
  net: aquantia: Fix hardware reset when SPI may rarely hangup
  s390/qeth: on channel error, reject further cmd requests
  s390/qeth: lock read device while queueing next buffer
  s390/qeth: when thread completes, wake up all waiters
  ...
2018-03-22 14:10:29 -07:00
Tal Gilboa
faf4db0081 Documentation/networking: Add net DIM documentation
Net DIM is a generic algorithm, purposed for dynamically
optimizing network devices interrupt moderation. This
document describes how it works and how to use it.

Signed-off-by: Tal Gilboa <talgi@mellanox.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-22 14:50:44 -04:00
David S. Miller
454bfe9783 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:

====================
pull-request: bpf-next 2018-03-21

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

The main changes are:

1) Add a BPF hook for sendmsg and sendfile by reusing the ULP infrastructure
   and sockmap. Three helpers are added along with this, bpf_msg_apply_bytes(),
   bpf_msg_cork_bytes(), and bpf_msg_pull_data(). The first is used to tell
   for how many bytes the verdict should be applied to, the second to tell
   that x bytes need to be queued first to retrigger the BPF program for a
   verdict, and the third helper is mainly for the sendfile case to pull in
   data for making it private for reading and/or writing, from John.

2) Improve address to symbol resolution of user stack traces in BPF stackmap.
   Currently, the latter stores the address for each entry in the call trace,
   however to map these addresses to user space files, it is necessary to
   maintain the mapping from these virtual addresses to symbols in the binary
   which is not practical for system-wide profiling. Instead, this option for
   the stackmap rather stores the ELF build id and offset for the call trace
   entries, from Song.

3) Add support that allows BPF programs attached to perf events to read the
   address values recorded with the perf events. They are requested through
   PERF_SAMPLE_ADDR via perf_event_open(). Main motivation behind it is to
   support building memory or lock access profiling and tracing tools with
   the help of BPF, from Teng.

4) Several improvements to the tools/bpf/ Makefiles. The 'make bpf' in the
   tools directory does not provide the standard quiet output except for
   bpftool and it also does not respect specifying a build output directory.
   'make bpf_install' command neither respects specified destination nor
   prefix, all from Jiri. In addition, Jakub fixes several other minor issues
   in the Makefiles on top of that, e.g. fixing dependency paths, phony
   targets and more.

5) Various doc updates e.g. add a comment for BPF fs about reserved names
   to make the dentry lookup from there a bit more obvious, and a comment
   to the bpf_devel_QA file in order to explain the diff between native
   and bpf target clang usage with regards to pointer size, from Quentin
   and Daniel.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-21 12:08:01 -04:00
Dave Airlie
fca3c46abc Add a device tree property description for hdmi device node
. '#sound-dai-cells' property is required to describe link between
 the HDMI IP block and the SoC's audio subsystem and Exynos SoC device
 tree files already have this property but we missed its description.
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Merge tag 'exynos-drm-fixes-for-v4.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes

Add a device tree property description for hdmi device node
. '#sound-dai-cells' property is required to describe link between
the HDMI IP block and the SoC's audio subsystem and Exynos SoC device
tree files already have this property but we missed its description.

* tag 'exynos-drm-fixes-for-v4.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
  dt-bindings: exynos: Document #sound-dai-cells property of the HDMI node
2018-03-21 13:56:07 +10:00
Daniel Borkmann
78262f4575 bpf, doc: add description wrt native/bpf clang target and pointer size
As this recently came up on netdev [0], lets add it to the BPF devel doc.

  [0] https://www.spinics.net/lists/netdev/msg489612.html

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-03-20 15:47:45 -07:00
Linus Torvalds
efac2483e8 Merge branch 'for-4.16-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
Pull libata fixes from Tejun Heo:
 "I sat on them too long and it's quite a few this late, but nothing has
  a wide blast area. The changes are...

   - Fix corner cases in SG command handling.

   - Recent introduction of default powersaving mode config option
     exposed several devices with broken powersaving behaviors. A number
     of patches to update the blacklist accordingly.

   - Fix a kernel panic on SAS hotplug.

   - Other misc and device specific updates"

* 'for-4.16-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  libata: Modify quirks for MX100 to limit NCQ_TRIM quirk to MU01 version
  libata: Make Crucial BX100 500GB LPM quirk apply to all firmware versions
  libata: Apply NOLPM quirk to Crucial M500 480 and 960GB SSDs
  libata: Enable queued TRIM for Samsung SSD 860
  PCI: Add function 1 DMA alias quirk for Highpoint RocketRAID 644L
  ahci: Add PCI-id for the Highpoint Rocketraid 644L card
  ata: do not schedule hot plug if it is a sas host
  libata: disable LPM for Crucial BX100 SSD 500GB drive
  libata: Apply NOLPM quirk to Crucial MX100 512GB SSDs
  libata: update documentation for sysfs interfaces
  ata: sata_rcar: Remove unused variable in sata_rcar_init_controller()
  libata: transport: cleanup documentation of sysfs interface
  sata_rcar: Reset SATA PHY when Salvator-X board resumes
  libata: don't try to pass through NCQ commands to non-NCQ devices
  libata: remove WARN() for DMA or PIO command without data
  libata: fix length validation of ATAPI-relayed SCSI commands
  ata: libahci: fix comment indentation
  ahci: Add check for device presence (PCIe hot unplug) in ahci_stop_engine()
  libata: Fix compile warning with ATA_DEBUG enabled
2018-03-19 14:23:30 -07:00
Sylwester Nawrocki
c15619a88a dt-bindings: exynos: Document #sound-dai-cells property of the HDMI node
The #sound-dai-cells DT property is required to describe link between
the HDMI IP block and the SoC's audio subsystem.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2018-03-19 08:42:53 +09:00
Andrew Lunn
7b7ef57c0d net: dsa: mv88e6xxx: Fix binding documentation for MDIO busses
The MDIO busses are switch properties and so should be inside the
switch node. Fix the examples in the binding document.

Reported-by: 尤晓杰 <yxj790222@163.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Fixes: a3c53be55c ("net: dsa: mv88e6xxx: Support multiple MDIO busses")
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-16 15:01:34 -04:00
Tonghao Zhang
320bd6de79 doc: Change the udp/sctp rmem/wmem default value.
The SK_MEM_QUANTUM was changed from PAGE_SIZE to 4096.

Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-16 12:03:30 -04:00
Brad Mouring
f3b249e652 Documentation: macb: Document phy-handle binding
Document the existence of the optional binding, directing to the
general ethernet document that describes this binding.

Signed-off-by: Brad Mouring <brad.mouring@ni.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-16 11:14:33 -04:00
Stephen Hemminger
2b221d20db doc: remove out of date links and info from packet mmap
The packet_mmap documentation had links to no longer existing web
sites; replace with other site which has similar example.

Support for packet mmap has been in mainline versions of libpcap
for several years.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-16 10:48:52 -04:00
Linus Torvalds
3032f8c504 USB fixes for 4.16-rc6
Here are a small clump of USB fixes for 4.16-rc6.
 
 Nothing major, just a number of fixes in lots of different drivers, as
 well as a PHY driver fix that snuck into this tree.  Full details are in
 the shortlog.
 
 All of these have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are a small clump of USB fixes for 4.16-rc6.

  Nothing major, just a number of fixes in lots of different drivers, as
  well as a PHY driver fix that snuck into this tree. Full details are
  in the shortlog.

  All of these have been in linux-next with no reported issues"

* tag 'usb-4.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (22 commits)
  usb: musb: Fix external abort in musb_remove on omap2430
  phy: qcom-ufs: add MODULE_LICENSE tag
  usb: typec: tcpm: fusb302: Do not log an error on -EPROBE_DEFER
  USB: OHCI: Fix NULL dereference in HCDs using HCD_LOCAL_MEM
  usbip: vudc: fix null pointer dereference on udc->lock
  xhci: Fix front USB ports on ASUS PRIME B350M-A
  usb: host: xhci-plat: revert "usb: host: xhci-plat: enable clk in resume timing"
  usb: usbmon: Read text within supplied buffer size
  usb: host: xhci-rcar: add support for r8a77965
  USB: storage: Add JMicron bridge 152d:2567 to unusual_devs.h
  usb: xhci: dbc: Fix lockdep warning
  xhci: fix endpoint context tracer output
  Revert "typec: tcpm: Only request matching pdos"
  usb: musb: call pm_runtime_{get,put}_sync before reading vbus registers
  usb: quirks: add control message delay for 1b1c:1b20
  uas: fix comparison for error code
  usb: gadget: udc: renesas_usb3: add binging for r8a77965
  usb: renesas_usbhs: add binding for r8a77965
  usb: dwc2: fix STM32F7 USB OTG HS compatible
  dt-bindings: usb: fix the STM32F7 DWC2 OTG HS core binding
  ...
2018-03-14 10:05:59 -07:00
Willem de Bruijn
ced68234b6 sock: remove zerocopy sockopt restriction on closed tcp state
Socket option SO_ZEROCOPY determines whether the kernel ignores or
processes flag MSG_ZEROCOPY on subsequent send calls. This to avoid
changing behavior for legacy processes.

Limiting the state change to closed sockets is annoying with passive
sockets and not necessary for correctness. Once created, zerocopy skbs
are processed based on their private state, not this socket flag.

Remove the constraint.

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-14 12:51:28 -04:00
Linus Torvalds
abeb75218a dmaengine fixes for v4.16-rc5
Two small fixes are for this cycle:
 - fix max_chunk_size for rcar-dmac for R-Car Gen3
 - fix clock resource of mv_xor_v2
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Merge tag 'dmaengine-fix-4.16-rc5' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine fixes from Vinod Koul:
 "Two small fixes are for this cycle:

   - fix max_chunk_size for rcar-dmac for R-Car Gen3

   - fix clock resource of mv_xor_v2"

* tag 'dmaengine-fix-4.16-rc5' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: mv_xor_v2: Fix clock resource by adding a register clock
  dmaengine: rcar-dmac: fix max_chunk_size for R-Car Gen3
2018-03-11 13:07:14 -07:00
Gregory CLEMENT
3cd2c313f1 dmaengine: mv_xor_v2: Fix clock resource by adding a register clock
On the CP110 components which are present on the Armada 7K/8K SoC we need
to explicitly enable the clock for the registers. However it is not
needed for the AP8xx component, that's why this clock is optional.

With this patch both clock have now a name, but in order to be backward
compatible, the name of the first clock is not used. It allows to still
use this clock with a device tree using the old binding.

Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2018-03-11 20:33:27 +05:30
Linus Torvalds
ed3c4dff8d The Sphinx 1.7 release broke the build process for reasons that are mostly
our fault.  This is a single fix cherry-picked from docs-next that restores
 docs buildability for all supported Sphinx versions.
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Merge tag 'docs-4.16-fix' of git://git.lwn.net/linux

Pull Documentation build fix from Jonathan Corbet:
 "The Sphinx 1.7 release broke the build process for reasons that are
  mostly our fault.

  This is a single fix cherry-picked from docs-next that restores docs
  buildability for all supported Sphinx versions"

* tag 'docs-4.16-fix' of git://git.lwn.net/linux:
  Documentation/sphinx: Fix Directive import error
2018-03-09 16:45:57 -08:00
Matthew Wilcox
ff690eeed8 Documentation/sphinx: Fix Directive import error
Sphinx 1.7 removed sphinx.util.compat.Directive so people
who have upgraded cannot build the documentation.  Switch to
docutils.parsers.rst.Directive which has been available since
docutils 0.5 released in 2009.

Bugzilla: https://bugzilla.opensuse.org/show_bug.cgi?id=1083694
Co-developed-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2018-03-09 10:46:14 -07:00
Linus Torvalds
a525df0558 powerpc fixes for 4.16 #5
One notable fix to properly advertise our support for a new firmware feature,
 caused by two series conflicting semantically but not textually.
 
 There's a new ioctl for the new ocxl driver, which is not a fix, but needed to
 complete the userspace API and good to have before the driver is in a released
 kernel.
 
 Finally three minor selftest fixes, and a fix for intermittent build failures
 for some obscure platforms, caused by a missing make dependency.
 
 Thanks to:
   Alastair D'Silva, Bharata B Rao, Guenter Roeck.
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Merge tag 'powerpc-4.16-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "One notable fix to properly advertise our support for a new firmware
  feature, caused by two series conflicting semantically but not
  textually.

  There's a new ioctl for the new ocxl driver, which is not a fix, but
  needed to complete the userspace API and good to have before the
  driver is in a released kernel.

  Finally three minor selftest fixes, and a fix for intermittent build
  failures for some obscure platforms, caused by a missing make
  dependency.

  Thanks to: Alastair D'Silva, Bharata B Rao, Guenter Roeck"

* tag 'powerpc-4.16-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/pseries: Fix vector5 in ibm architecture vector table
  ocxl: Document the OCXL_IOCTL_GET_METADATA IOCTL
  ocxl: Add get_metadata IOCTL to share OCXL information to userspace
  selftests/powerpc: Skip the subpage_prot tests if the syscall is unavailable
  selftests/powerpc: Fix missing clean of pmu/lib.o
  powerpc/boot: Fix random libfdt related build errors
  selftests/powerpc: Skip tm-trap if transactional memory is not enabled
2018-03-09 09:33:48 -08:00
Daniel Axtens
1dd27cde30 net: use skb_is_gso_sctp() instead of open-coding
As well as the basic conversion, I noticed that a lot of the
SCTP code checks gso_type without first checking skb_is_gso()
so I have added that where appropriate.

Also, document the helper.

Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-09 11:41:47 -05:00
Eric Dumazet
79134e6ce2 net: do not create fallback tunnels for non-default namespaces
fallback tunnels (like tunl0, gre0, gretap0, erspan0, sit0,
ip6tnl0, ip6gre0) are automatically created when the corresponding
module is loaded.

These tunnels are also automatically created when a new network
namespace is created, at a great cost.

In many cases, netns are used for isolation purposes, and these
extra network devices are a waste of resources. We are using
thousands of netns per host, and hit the netns creation/delete
bottleneck a lot. (Many thanks to Kirill for recent work on this)

Add a new sysctl so that we can opt-out from this automatic creation.

Note that these tunnels are still created for the initial namespace,
to be the least intrusive for typical setups.

Tested:
lpk43:~# cat add_del_unshare.sh
for i in `seq 1 40`
do
 (for j in `seq 1 100` ; do  unshare -n /bin/true >/dev/null ; done) &
done
wait

lpk43:~# echo 0 >/proc/sys/net/core/fb_tunnels_only_for_init_net
lpk43:~# time ./add_del_unshare.sh

real	0m37.521s
user	0m0.886s
sys	7m7.084s
lpk43:~# echo 1 >/proc/sys/net/core/fb_tunnels_only_for_init_net
lpk43:~# time ./add_del_unshare.sh

real	0m4.761s
user	0m0.851s
sys	1m8.343s
lpk43:~#

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-09 11:23:11 -05:00
Yoshihiro Shimoda
015dbeb228 usb: host: xhci-rcar: add support for r8a77965
This patch adds support for r8a77965 (R-Car M3-N).

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-08 10:07:44 -08:00
Daniel Axtens
3d07e0746f docs: segmentation-offloads.txt: Correct TCP gso_types
Pretty minor: just SKB_GSO_TCP  -> SKB_GSO_TCPV4 and
                   SKB_GSO_TCP6 -> SKB_GSO_TCPV6.

Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-08 11:27:11 -05:00
David S. Miller
cfda06d736 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says:

====================
pull-request: bpf 2018-03-08

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

The main changes are:

1) Fix various BPF helpers which adjust the skb and its GSO information
   with regards to SCTP GSO. The latter is a special case where gso_size
   is of value GSO_BY_FRAGS, so mangling that will end up corrupting
   the skb, thus bail out when seeing SCTP GSO packets, from Daniel(s).

2) Fix a compilation error in bpftool where BPF_FS_MAGIC is not defined
   due to too old kernel headers in the system, from Jiri.

3) Increase the number of x64 JIT passes in order to allow larger images
   to converge instead of punting them to interpreter or having them
   rejected when the interpreter is not built into the kernel, from Daniel.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-07 20:27:51 -05:00
Brandon Streiff
22936c3e6e dt-bindings: net: dsa: marvell: describe compatibility string
There are two compatibility strings for mv88e6xxx, but it isn't clear
from the documentation why only those two exist when the mv88e6xxx driver
supports more than the 6085 and 6190. Briefly describe how the compatible
property is used, and provide guidance on which to use.

The model list comes from looking at port_base_addr values (0x0 vs 0x10)
in drivers/net/dsa/mv88e6xxx/chip.c.

Signed-off-by: Brandon Streiff <brandon.streiff@ni.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-07 12:18:50 -05:00
Geert Uytterhoeven
25b5cdfcce dt-bindings: net: renesas-ravb: Make stream buffer optional
The Stream Buffer for EtherAVB-IF (STBE) is an optional component, and
is not present on all SoCs.

Document this in the DT bindings, including a list of SoCs that do have
it.

Fixes: 785ec87483 ("ravb: document R8A77970 bindings")
Fixes: f231c4178a ("dt-bindings: net: renesas-ravb: Add support for R8A77995 RAVB")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-07 10:22:38 -05:00
David S. Miller
0f3e9c97eb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
All of the conflicts were cases of overlapping changes.

In net/core/devlink.c, we have to make care that the
resouce size_params have become a struct member rather
than a pointer to such an object.

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-06 01:20:46 -05:00
Linus Torvalds
ce380619fa More atomic cleanup from willy. Fix a python script to work with version 3.
Some other small cleanups.
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Merge tag 'please-pull-ia64_misc' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux

Pull ia64 cleanups from Tony Luck:

 - More atomic cleanup from willy

 - Fix a python script to work with version 3

 - Some other small cleanups

* tag 'please-pull-ia64_misc' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
  ia64/err-inject: fix spelling mistake: "capapbilities" -> "capabilities"
  ia64/err-inject: Use get_user_pages_fast()
  ia64: doc: tweak whitespace for 'console=' parameter
  ia64: Convert remaining atomic operations
  ia64: convert unwcheck.py to python3
2018-03-05 20:31:14 -08:00
Sergei Trofimovich
339d541a01 ia64: doc: tweak whitespace for 'console=' parameter
CC: Tony Luck <tony.luck@intel.com>
CC: Fenghua Yu <fenghua.yu@intel.com>
CC: linux-ia64@vger.kernel.org
CC: linux-kernel@vger.kernel.org
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2018-03-05 14:41:38 -08:00
Linus Torvalds
547046141f Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Use an appropriate TSQ pacing shift in mac80211, from Toke
    Høiland-Jørgensen.

 2) Just like ipv4's ip_route_me_harder(), we have to use skb_to_full_sk
    in ip6_route_me_harder, from Eric Dumazet.

 3) Fix several shutdown races and similar other problems in l2tp, from
    James Chapman.

 4) Handle missing XDP flush properly in tuntap, for real this time.
    From Jason Wang.

 5) Out-of-bounds access in powerpc ebpf tailcalls, from Daniel
    Borkmann.

 6) Fix phy_resume() locking, from Andrew Lunn.

 7) IFLA_MTU values are ignored on newlink for some tunnel types, fix
    from Xin Long.

 8) Revert F-RTO middle box workarounds, they only handle one dimension
    of the problem. From Yuchung Cheng.

 9) Fix socket refcounting in RDS, from Ka-Cheong Poon.

10) Don't allow ppp unit registration to an unregistered channel, from
    Guillaume Nault.

11) Various hv_netvsc fixes from Stephen Hemminger.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (98 commits)
  hv_netvsc: propagate rx filters to VF
  hv_netvsc: filter multicast/broadcast
  hv_netvsc: defer queue selection to VF
  hv_netvsc: use napi_schedule_irqoff
  hv_netvsc: fix race in napi poll when rescheduling
  hv_netvsc: cancel subchannel setup before halting device
  hv_netvsc: fix error unwind handling if vmbus_open fails
  hv_netvsc: only wake transmit queue if link is up
  hv_netvsc: avoid retry on send during shutdown
  virtio-net: re enable XDP_REDIRECT for mergeable buffer
  ppp: prevent unregistered channels from connecting to PPP units
  tc-testing: skbmod: fix match value of ethertype
  mlxsw: spectrum_switchdev: Check success of FDB add operation
  net: make skb_gso_*_seglen functions private
  net: xfrm: use skb_gso_validate_network_len() to check gso sizes
  net: sched: tbf: handle GSO_BY_FRAGS case in enqueue
  net: rename skb_gso_validate_mtu -> skb_gso_validate_network_len
  rds: Incorrect reference counting in TCP socket creation
  net: ethtool: don't ignore return from driver get_fecparam method
  vrf: check forwarding on the original netdevice when generating ICMP dest unreachable
  ...
2018-03-05 11:29:24 -08:00
Yoshihiro Shimoda
c6ba5084ce usb: gadget: udc: renesas_usb3: add binging for r8a77965
This patch adds binding for r8a77965 (R-Car M3-N).

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-03-05 10:49:32 +02:00
Yoshihiro Shimoda
54f02945f7 usb: renesas_usbhs: add binding for r8a77965
This patch adds binding for r8a77965 (R-Car M3-N).

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-03-05 10:49:30 +02:00
Amelie Delaunay
4c437920fa dt-bindings: usb: fix the STM32F7 DWC2 OTG HS core binding
This patch fixes binding documentation for DWC2 controller in HS mode
found on STMicroelectronics STM32F7 SoC.
The v2 former patch [1] had been acked by Rob Herring, but v1 was merged.

[1] https://patchwork.kernel.org/patch/9925575/

Fixes: 000777dadc ("dt-bindings: usb: Document the STM32F7xx DWC2 ...")
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-03-05 10:43:54 +02:00
Linus Torvalds
e64b9562ba Merge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
 "A small set of fixes for x86:

   - Add missing instruction suffixes to assembly code so it can be
     compiled by newer GAS versions without warnings.

   - Switch refcount WARN exceptions to UD2 as we did in general

   - Make the reboot on Intel Edison platforms work

   - A small documentation update so text and sample command match"

* 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Documentation, x86, resctrl: Make text and sample command match
  x86/platform/intel-mid: Handle Intel Edison reboot correctly
  x86/asm: Add instruction suffixes to bitops
  x86/entry/64: Add instruction suffix
  x86/refcounts: Switch to UD2 for exceptions
2018-03-04 12:12:48 -08:00
Linus Torvalds
ff8d583621 Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixlet from Thomas Gleixner:
 "Just a documentation update for the missing device tree property of
  the R-Car M3N interrupt controller"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  dt-bindings/irqchip/renesas-irqc: Document R-Car M3-N support
2018-03-04 11:33:04 -08:00
David Ahern
b4bac172e9 net/ipv6: Add support for path selection using hash of 5-tuple
Some operators prefer IPv6 path selection to use a standard 5-tuple
hash rather than just an L3 hash with the flow the label. To that end
add support to IPv6 for multipath hash policy similar to bf4e0a3db9
("net: ipv4: add support for ECMP hash policy choice"). The default
is still L3 which covers source and destination addresses along with
flow label and IPv6 protocol.

Signed-off-by: David Ahern <dsahern@gmail.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Tested-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 13:04:23 -05:00