Lots of conflicts, by happily all cases of overlapping
changes, parallel adds, things of that nature.

Thanks to Stephen Rothwell, Saeed Mahameed, and others
for their guidance in these resolutions.
Signed-off-by: David S. Miller <davem@davemloft.net>

Michael Chan says:

====================
bnxt_en: Update for net-next.

Three main changes in this series, besides the usual firmware spec
update:

1. Add support for a new firmware communication channel direct to the
firmware processor that handles flow offloads.  This speeds up
flow offload operations.

2. Use 64-bit internal flow handles to increase the number of flows
that can be offloaded.

3. Add level-2 context memory paging so that we can configure more
context memory for RDMA on the 57500 chips.  Allocate more context
memory if RDMA is enabled on the 57500 chips.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

For a little better performance on faster machines and faster link
speeds.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Older firmware only supports 16-bit flow handle, because of which the
number of flows that can be offloaded can’t scale beyond a point.
Newer firmware supports 64-bit flow handle enabling the host to scale
upto millions of flows. With the new 64-bit flow handle support, driver
has to query flow stats in a different way compared to the older approach.

This patch adds support for 64-bit flow handle and new way to query
flow stats.
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Reviewed-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

If RDMA is supported on the 57500 chip, increase context memory
allocations for the resources used by RDMA.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add the new functions bnxt_alloc_ctx_pg_tbls()/bnxt_free_ctx_pg_tbls()
to allocate and free pages for context memory.  The new functions
will handle the different levels of paging support and allocate/free
the pages accordingly using the existing functions.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

To support level 2 context page memory structures, enhance the
bnxt_ring_mem_info structure with a "depth" field to specify the page
level and add a flag to specify using full pages for L1 and L2 page
tables.  This is needed to support RDMA functionality on 57500 chips
since RDMA requires more context memory.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Earlier, some of the firmware commands (ex: CFA_FLOW_*) which are processed
by KONG processor were sent to the CHIMP processor from the host. This
approach was taken as there was no direct message channel to KONG.
CHIMP in turn used to send them to KONG. Newer firmware supports a new
message channel which the host can send messages directly to the KONG
processor.

This patch adds support for required changes needed in the driver
to support direct KONG message channel.  This speeds up flow related
messages sent to the firmware for CLS_FLOWER offload.
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

These routines will be enhanced in the subsequent patch to
return the 2nd firmware comm. channel's hwrm response address &
sequence id respectively.
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Typecast hwrm_cmd_resp_addr to (u8 *) from (void *) before doing
arithmetic.
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

In preparation for adding a 2nd communication channel to firmware.
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Set hwrm_intr_seq_id value to its inverted value instead of
HWRM_SEQ_INVALID, when an hwrm completion of type
CMPL_BASE_TYPE_HWRM_DONE is received. This will enable us to use
the complete 16-bit sequence ID space.
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The major changes are in the flow offload firmware APIs.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Steffen Klassert says:

====================
pull request (net-next): ipsec-next 2018-12-20

Two last patches for this release cycle:

1) Remove an unused variable in xfrm_policy_lookup_bytype().
   From YueHaibing.

2) Fix possible infinite loop in __xfrm6_tunnel_alloc_spi().
   Also from YueHaibing.

Please pull or let me know if there are problems.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Pull m68k fix from Geert Uytterhoeven:
 "Fix memblock-related crashes"

* tag 'm68k-for-v4.20-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Fix memblock-related crashes

Merge tag 'kbuild-fixes-v4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fix from Masahiro Yamada:
 "Fix false positive warning/error about missing library for objtool"

* tag 'kbuild-fixes-v4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: fix false positive warning/error about missing libelf

Pull char/misc driver fixes from Greg KH:
 "Here are three tiny last-minute driver fixes for 4.20-rc8 that resolve
  some reported issues, and one MAINTAINERS file update.

  All of them are related to the hyper-v subsystem, it seems people are
  actually testing and using it now, which is nice to see :)

  The fixes are:
   - uio_hv_generic: fix for opening multiple times
   - Remove PCI dependancy on hyperv drivers
   - return proper error code for an unopened channel.

  And Sasha has signed up to help out with the hyperv maintainership.

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

* tag 'char-misc-4.20-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  Drivers: hv: vmbus: Return -EINVAL for the sys files for unopened channels
  x86, hyperv: remove PCI dependency
  MAINTAINERS: Patch monkey for the Hyper-V code
  uio_hv_generic: set callbacks on open

Pull tty/serial fix from Greg KH:
 "Here is a single fix, a revert, for the 8250 serial driver to resolve
  a reported problem.

  There was some attempted patches to fix the issue, but people are
  arguing about them, so reverting the patch to revert back to the 4.19
  and older behavior is the best thing to do at this late in the release
  cycle.

  The revert has been in linux-next with no reported issues"

* tag 'tty-4.20-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  Revert "serial: 8250: Fix clearing FIFOs in RS485 mode again"

Pull USB fixes and ids from Greg KH:
 "Here are some late xhci fixes for 4.20-rc8 as well as a few new device
  ids for the option usb-serial driver.

  The xhci fixes resolve some many-reported issues and all of these have
  been in linux-next for a while with no reported problems"

* tag 'usb-4.20-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: xhci: fix 'broken_suspend' placement in struct xchi_hcd
  xhci: Don't prevent USB2 bus suspend in state check intended for USB3 only
  USB: serial: option: add Telit LN940 series
  USB: serial: option: add Fibocom NL668 series
  USB: serial: option: add Simcom SIM7500/SIM7600 (MBIM mode)
  USB: serial: option: add GosunCn ZTE WeLink ME3630
  USB: serial: option: add HP lt4132

Pull MMC fixes from Ulf Hansson:
 "MMC core:
   - Restore code to allow BKOPS and CACHE ctrl even if no HPI support
   - Reset HPI enabled state during re-init
   - Use a default minimum timeout when enabling CACHE ctrl

  MMC host:
   - omap_hsmmc: Fix DMA API warning
   - sdhci-tegra: Fix dt parsing of SDMMC pads autocal values
   - Correct register accesses when enabling v4 mode"

* tag 'mmc-v4.20-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: core: Use a minimum 1600ms timeout when enabling CACHE ctrl
  mmc: core: Allow BKOPS and CACHE ctrl even if no HPI support
  mmc: core: Reset HPI enabled state during re-init and in case of errors
  mmc: omap_hsmmc: fix DMA API warning
  mmc: tegra: Fix for SDMMC pads autocal parsing from dt
  mmc: sdhci: Fix sdhci_do_enable_v4_mode

This reverts commit 61c6de66.

The reverted commit added page reference counting to iomap page
structures that are used to track block size < page size state. This
was supposed to align the code with page migration page accounting
assumptions, but what it has done instead is break XFS filesystems.
Every fstests run I've done on sub-page block size XFS filesystems
has since picking up this commit 2 days ago has failed with bad page
state errors such as:

# ./run_check.sh "-m rmapbt=1,reflink=1 -i sparse=1 -b size=1k" "generic/038"
....
SECTION       -- xfs
FSTYP         -- xfs (debug)
PLATFORM      -- Linux/x86_64 test1 4.20.0-rc6-dgc+
MKFS_OPTIONS  -- -f -m rmapbt=1,reflink=1 -i sparse=1 -b size=1k /dev/sdc
MOUNT_OPTIONS -- /dev/sdc /mnt/scratch

generic/038 454s ...
 run fstests generic/038 at 2018-12-20 18:43:05
 XFS (sdc): Unmounting Filesystem
 XFS (sdc): Mounting V5 Filesystem
 XFS (sdc): Ending clean mount
 BUG: Bad page state in process kswapd0  pfn:3a7fa
 page:ffffea0000ccbeb0 count:0 mapcount:0 mapping:ffff88800d9b6360 index:0x1
 flags: 0xfffffc0000000()
 raw: 000fffffc0000000 dead000000000100 dead000000000200 ffff88800d9b6360
 raw: 0000000000000001 0000000000000000 00000000ffffffff
 page dumped because: non-NULL mapping
 CPU: 0 PID: 676 Comm: kswapd0 Not tainted 4.20.0-rc6-dgc+ #915
 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.1-1 04/01/2014
 Call Trace:
  dump_stack+0x67/0x90
  bad_page.cold.116+0x8a/0xbd
  free_pcppages_bulk+0x4bf/0x6a0
  free_unref_page_list+0x10f/0x1f0
  shrink_page_list+0x49d/0xf50
  shrink_inactive_list+0x19d/0x3b0
  shrink_node_memcg.constprop.77+0x398/0x690
  ? shrink_slab.constprop.81+0x278/0x3f0
  shrink_node+0x7a/0x2f0
  kswapd+0x34b/0x6d0
  ? node_reclaim+0x240/0x240
  kthread+0x11f/0x140
  ? __kthread_bind_mask+0x60/0x60
  ret_from_fork+0x24/0x30
 Disabling lock debugging due to kernel taint
....

The failures are from anyway that frees pages and empties the
per-cpu page magazines, so it's not a predictable failure or an easy
to debug failure.

generic/038 is a reliable reproducer of this problem - it has a 9 in
10 failure rate on one of my test machines. Failure on other
machines have been at random points in fstests runs but every run
has ended up tripping this problem. Hence generic/038 was used to
bisect the failure because it was the most reliable failure.

It is too close to the 4.20 release (not to mention holidays) to
try to diagnose, fix and test the underlying cause of the problem,
so reverting the commit is the only option we have right now. The
revert has been tested against a current tot 4.20-rc7+ kernel across
multiple machines running sub-page block size XFs filesystems and
none of the bad page state failures have been seen.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Cc: Piotr Jaroszynski <pjaroszynski@nvidia.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Darrick J. Wong <darrick.wong@oracle.com>
Cc: Brian Foster <bfoster@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Add NDA_PROTOCOL to nda_policy and use the policy for attribute parsing and
validation for adding neighbors and in dump requests. Remove the now duplicate
checks on nla_len.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Peng Li says:

====================
net: hns3: 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>

This patch removes the redundant variable initialization,
as driver will devm_kzalloc to set value to hdev soon.
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Driver gets rss information from the last descriptor of the packet.
When driver handle the rss type, ring->next_to_clean indicates the
first descriptor of next packet.

This patch fix the descriptor index with "ring->next_to_clean - 1".

Fixes: 232fc64b ("net: hns3: Add HW RSS hash information to RX skb")
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

When user disables flow director, all the rules will be disabled. But
when reset happens, it will restore all the rules again. It's not
reasonable. This patch fixes it by add flow director status check before
restore fules.

Fixes: 6871af29 ("net: hns3: Add reset handle for flow director")
Fixes: c17852a8 ("net: hns3: Add support for enable/disable flow director")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

When add flow director fule for vf, the vf id is used as array
subscript before valid checking, which may cause memory overflow.

Fixes: dd74f815 ("net: hns3: Add support for rule add/delete for flow director")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

While doing DOWN operation, the driver will reclaim the memory which has
already used for TX. If the hardware is processing this memory, it will
cause a RCB error to the hardware. According the hardware's description,
the driver should reset the tqp before reclaim the memory during DOWN.
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>

Each pf supports max 64 vectors and 128 tqps. For 2p/4p core scenario,
there may be more than 64 cpus online. So the result of min_t(u16,
num_Online_cpus(), tqp_num) may be more than 64. This patch adds check
for the vector number.

Fixes: dd38c726 ("net: hns3: fix for coalesce configuration lost during reset")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

udelay() in driver may always occupancy processor. If there is only
one cpu in system, the VF driver may initialize fail when insmod
PF and VF driver in the same system. This patch use msleep() to free
cpu when VF wait PF message.
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

In original codes, default tc value is set to the max tc. It's more
reasonable to close tc by changing default tc value to 1. Users can
enable it with lldp tool when they want to use tc.
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

When triggering nic down, there is a time window between bringing down
the protocol stack and stopping the work task. If the net is up in the
time window, it may bring up the protocol stack again.

This patch fixes it by stop the work task at the beginning of
hns3_nic_net_stop(). To keep symmetrical, start the work task at the
end of hns3_nic_net_open().
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Pull networking fixes from David Miller:

 1) Off by one in netlink parsing of mac802154_hwsim, from Alexander
    Aring.

 2) nf_tables RCU usage fix from Taehee Yoo.

 3) Flow dissector needs nhoff and thoff clamping, from Stanislav
    Fomichev.

 4) Missing sin6_flowinfo initialization in SCTP, from Xin Long.

 5) Spectrev1 in ipmr and ip6mr, from Gustavo A. R. Silva.

 6) Fix r8169 crash when DEBUG_SHIRQ is enabled, from Heiner Kallweit.

 7) Fix SKB leak in rtlwifi, from Larry Finger.

 8) Fix state pruning in bpf verifier, from Jakub Kicinski.

 9) Don't handle completely duplicate fragments as overlapping, from
    Michal Kubecek.

10) Fix memory corruption with macb and 64-bit DMA, from Anssi Hannula.

11) Fix TCP fallback socket release in smc, from Myungho Jung.

12) gro_cells_destroy needs to napi_disable, from Lorenzo Bianconi.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (130 commits)
  rds: Fix warning.
  neighbor: NTF_PROXY is a valid ndm_flag for a dump request
  net: mvpp2: fix the phylink mode validation
  net/sched: cls_flower: Remove old entries from rhashtable
  net/tls: allocate tls context using GFP_ATOMIC
  iptunnel: make TUNNEL_FLAGS available in uapi
  gro_cell: add napi_disable in gro_cells_destroy
  lan743x: Remove MAC Reset from initialization
  net/mlx5e: Remove the false indication of software timestamping support
  net/mlx5: Typo fix in del_sw_hw_rule
  net/mlx5e: RX, Fix wrong early return in receive queue poll
  ipv6: explicitly initialize udp6_addr in udp_sock_create6()
  bnxt_en: Fix ethtool self-test loopback.
  net/rds: remove user triggered WARN_ON in rds_sendmsg
  net/rds: fix warn in rds_message_alloc_sgs
  ath10k: skip sending quiet mode cmd for WCN3990
  mac80211: free skb fraglist before freeing the skb
  nl80211: fix memory leak if validate_pae_over_nl80211() fails
  net/smc: fix TCP fallback socket release
  vxge: ensure data0 is initialized in when fetching firmware version information
  ...

>> net/rds/send.c:1109:42: warning: Using plain integer as NULL pointer

Fixes: ea010070 ("net/rds: fix warn in rds_message_alloc_sgs")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Pull virtio fix from Michael Tsirkin:
 "A last-minute fix for a test build"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio: fix test build after uio.h change

Pull NFS client bugfixes from Trond Myklebust:

 - Fix TCP socket disconnection races by ensuring we always call
   xprt_disconnect_done() after releasing the socket.

 - Fix a race when clearing both XPRT_CONNECTING and XPRT_LOCKED

 - Remove xprt_connect_status() so it does not mask errors that should
   be handled by call_connect_status()

* tag 'nfs-for-4.20-6' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  SUNRPC: Remove xprt_connect_status()
  SUNRPC: Fix a race with XPRT_CONNECTING
  SUNRPC: Fix disconnection races

Pull kvm fixes from Paolo Bonzini:

 -  One nasty use-after-free bugfix, from this merge window however

 -  A less nasty use-after-free that can only zero some words at the
    beginning of the page, and hence is not really exploitable

 -  A NULL pointer dereference

 -  A dummy implementation of an AMD chicken bit MSR that Windows uses
    for some unknown reason

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  kvm: x86: Add AMD's EX_CFG to the list of ignored MSRs
  KVM: X86: Fix NULL deref in vcpu_scan_ioapic
  KVM: Fix UAF in nested posted interrupt processing
  KVM: fix unregistering coalesced mmio zone from wrong bus

Pull dma-mapping fix from Christoph Hellwig:
 "Fix a regression in dma-direct that didn't take account the magic AMD
  memory encryption mask in the DMA address"

* tag 'dma-mapping-4.20-4' of git://git.infradead.org/users/hch/dma-mapping:
  dma-direct: do not include SME mask in the DMA supported check

When dumping proxy entries the dump request has NTF_PROXY set in
ndm_flags. strict mode checking needs to be updated to allow this
flag.

Fixes: 51183d23 ("net/neighbor: Update neigh_dump_info for strict data checking")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

pneigh_lookup uses kmalloc versus kzalloc when new entries are allocated.
Given that the newly added protocol field needs to be initialized.

Fixes: df9b0e30 ("neighbor: Add protocol attribute")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>