Some controllers allow for a one-shot output pulse, in contrast to
periodic output. Now that we have extensible versions of our IOCTLs, we
can finally make use of the 'flags' field to pass a bit telling driver
that if we want one-shot pulse output.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Reviewed-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The current version of the IOCTL have a small problem which prevents us
from extending the API by making use of reserved fields. In these new
IOCTLs, we are now making sure that flags and rsv fields are zero which
will allow us to extend the API in the future.
Reviewed-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Jeff Kirsher says:

====================
100GbE Intel Wired LAN Driver Updates 2019-09-12

This series contains updates to ice driver to implement and support
loading a Dynamic Device Personalization (DDP) package from lib/firmware
onto the device.

Paul updates the way the driver version is stored in the driver so that
we can pass the driver version to the firmware.  Passing of the driver
version to the firmware is needed for the DDP package to ensure we have
the appropriate support in the driver for the features in the package.

Lukasz fixes how the firmware version is stored to align with how the
firmware stores its own version.  Also extended the log message to
display additional useful information such as NVM version, API patch
information and firmware build hash.

Tony adds the needed driver support to check, load and store the DDP
package.  Also add support for the ability to load DDP packages intended
for specific hardware devices, as well as what to do when loading of the
DDP package fails to load.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates 2019-09-11

This series contains updates to i40e, ixgbe/vf and iavf.

Wenwen Wang fixes a potential memory leak where 3 allocated variables
are not properly cleaned up on failure for ixgbe.

Stefan Assmann fixes a potential kernel panic found when repeatedly
spawning and destroying VFs in i40e when a NULL pointer is dereferenced
due to a race condition.  Fixed up the i40e driver to clear the
__I40E_VIRTCHNL_OP_PENDING bit before returning after an invalid
minimum transmit rate is requested.  Updates the iavf driver to only
apply the MAC address change when the PF ACK's the requested change.

Tonghao Zhang updates ixgbe to use the skb_get_queue_mapping() API call
instead of the driver accessing the queue mapping directly.

Jake updates i40e to use ktime_get_real_ts64() instead of
ktime_to_timespec64().  Removes the define for bit 0x0001 for cloud
filters, since it is a reserved bit and not a valid type.  Also added
code comments to clearly state which bits are reserved and should not be
used or defined for cloud filter adminq command.  Clarify the macros
used to specify the cloud filter fields are individual bits, so use the
BIT() macro.

Aleksandr fixes up the print_link_message() to include the "negotiated"
FEC status for i40e.

Czeslaw also adds additional log message for devices without FEC in the
print_link_message() for i40e.

Colin Ian King reduces the object code size by making the array API
static constant.

Magnus fixes a potential receive buffer starvation issue for AF_XDP by
kicking the NAPI context of any queue with an attached AF_XDP zero-copy
socket.

v2: Removed patch 11 from the original series (Alex Duyck's ITR fix),
    so that it can be sent to the net tree.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Pablo Neira Ayuso says:

====================
Netfilter updates for net-next

The following patchset contains Netfilter updates for net-next:

1) Fix error path of nf_tables_updobj(), from Dan Carpenter.

2) Move large structure away from stack in the nf_tables offload
   infrastructure, from Arnd Bergmann.

3) Move indirect flow_block logic to nf_tables_offload.

4) Support for synproxy objects, from Fernando Fernandez Mancera.

5) Support for fwd and dup offload.

6) Add __nft_offload_get_chain() helper, this implicitly fixes missing
   mutex and check for offload flags in the indirect block support,
   patch from wenxu.

7) Remove rules on device unregistration, from wenxu. This includes
   two preparation patches to reuse nft_flow_offload_chain() and
   nft_flow_offload_rule().

Large batch from Jeremy Sowden to make a second pass to the
CONFIG_HEADER_TEST support and a bit of housekeeping:

8) Missing include guard in conntrack label header, from Jeremy Sowden.

9) A few coding style errors: trailing whitespace, incorrect indent in
   Kconfig, and semicolons at the end of function definitions.

10) Remove unused ipt_init() and ip6t_init() declarations.

11) Inline xt_hashlimit, ebt_802_3 and xt_physdev headers. They are
    only used once.

12) Update include directive in several netfilter files.

13) Remove unused include/net/netfilter/ipv6/nf_conntrack_icmpv6.h.

14) Move nf_ip6_ext_hdr() to include/linux/netfilter_ipv6.h

15) Move several synproxy structure definitions to nf_synproxy.h

16) Move nf_bridge_frag_data structure to include/linux/netfilter_bridge.h

17) Clean up static inline definitions in nf_conntrack_ecache.h.

18) Replace defined(CONFIG...) || defined(CONFIG...MODULE) with IS_ENABLED(CONFIG...).

19) Missing inline function conditional definitions based on Kconfig
    preferences in synproxy and nf_conntrack_timeout.

20) Update br_nf_pre_routing_ipv6() definition.

21) Move conntrack code in linux/skbuff.h to nf_conntrack headers.

22) Several patches to remove superfluous CONFIG_NETFILTER and
    CONFIG_NF_CONNTRACK checks in headers, coming from the initial batch
    support for CONFIG_HEADER_TEST for netfilter.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Two inline functions defined in nf_conntrack_timestamp.h,
`nf_ct_tstamp_enabled` and `nf_ct_set_tstamp`, are not called anywhere.
Remove them.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

nf_conntrack_zones.h was wrapped in a CONFIG_NF_CONNTRACK check in order
to fix compilation failures:

  37ee3d5b ("netfilter: nf_defrag_ipv4: fix compilation error with NF_CONNTRACK=n")

Subsequent changes mean that these failures will no longer occur and the
check is unnecessary.  Remove it.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

`struct nf_hook_ops`, `struct nf_hook_state` and the `nf_hookfn`
function typedef appear in function and struct declarations and
definitions in a number of netfilter headers.  The structs and typedef
themselves are defined by linux/netfilter.h but only when
CONFIG_NETFILTER is enabled.  Define them unconditionally and add
forward declarations in order to remove CONFIG_NETFILTER conditionals
from the other headers.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

There is a superfluous `#if IS_ENABLED(CONFIG_NF_CONNTRACK)` check
wrapping some function declarations.  Remove it.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

Move some `struct nf_conntrack` code from linux/skbuff.h to
linux/nf_conntrack_common.h.  Together with a couple of helpers for
getting and setting skb->_nfct, it allows us to remove
CONFIG_NF_CONNTRACK checks from net/netfilter/nf_conntrack.h.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

The real br_nf_pre_routing_ipv6 function, defined when CONFIG_IPV6 is
enabled, expects `void *priv`, not `const struct nf_hook_ops *ops`.
Update the stub br_nf_pre_routing_ipv6, defined when CONFIG_IPV6 is
disabled, to match.

Fixes: 06198b34 ("netfilter: Pass priv instead of nf_hook_ops to netfilter hooks")
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

nf_conntrack_synproxy.h contains three inline functions.  The contents
of two of them are wrapped in CONFIG_NETFILTER_SYNPROXY checks and just
return NULL if it is not enabled.  The third does nothing if they return
NULL, so wrap its contents as well.

nf_ct_timeout_data is only called if CONFIG_NETFILTER_TIMEOUT is
enabled.  Wrap its contents in a CONFIG_NETFILTER_TIMEOUT check like the
other inline functions in nf_conntrack_timeout.h.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

A few headers contain instances of:

  #if defined(CONFIG_XXX) or defined(CONFIG_XXX_MODULE)

Replace them with:

  #if IS_ENABLED(CONFIG_XXX)
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

The header contains some inline functions defined as:

  static inline f (...)
  {
  #ifdef CONFIG_NF_CONNTRACK_EVENTS
    ...
  #else
    ...
  #endif
  }

and a few others as:

  #ifdef CONFIG_NF_CONNTRACK_EVENTS
  static inline f (...)
  {
    ...
  }
  #else
  static inline f (...)
  {
    ...
  }
  #endif

Prefer the former style, which is more numerous.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

There is a struct definition function in nf_conntrack_bridge.h which is
not specific to conntrack and is used elswhere in netfilter.  Move it
into netfilter_bridge.h.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

There is some non-conntrack code in the nf_conntrack_synproxy.h header.
Move it to the nf_synproxy.h header.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

There is an inline function in ip6_tables.h which is not specific to
ip6tables and is used elswhere in netfilter.  Move it into
netfilter_ipv6.h and update the callers.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

nf_conntrack_icmpv6.h contains two object macros which duplicate macros
in linux/icmpv6.h.  The latter definitions are also visible wherever it
is included, so remove it.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

Include some headers in files which require them, and remove others
which are not required.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

Three netfilter headers are only included once.  Inline their contents
at those sites and remove them.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

Two headers include declarations of functions which are never defined.
Remove them.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

Several header-files, Kconfig files and Makefiles have trailing
white-space.  Remove it.

In netfilter/Kconfig, indent the type of CONFIG_NETFILTER_NETLINK_ACCT
correctly.

There are semicolons at the end of two function definitions in
include/net/netfilter/nf_conntrack_acct.h and
include/net/netfilter/nf_conntrack_ecache.h. Remove them.

Fix indentation in nf_conntrack_l4proto.h.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

nf_conntrack_labels.h has no include guard.  Add it.

The comment following the #endif in the nf_flow_table.h include guard
referred to the wrong macro.  Fix it.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

If the net_device unregisters, clean up the offload rules before the
chain is destroy.
Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

Pass rule, chain and flow_rule object parameters to nft_flow_offload_rule
to reuse it.
Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

Pass chain and policy parameters to nft_flow_offload_chain to reuse it.
Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

Add __nft_offload_get_chain function to get basechain from device. This
function requires that caller holds the per-netns nftables mutex. This
patch implicitly fixes missing offload flags check and proper mutex from
nft_indr_block_cb().

Fixes: 9a32669f ("netfilter: nf_tables_offload: support indr block call")
Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

Bump version to 0.8.1-k
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Attempt to request an optional device-specific DDP package file
(one with the PCIe Device Serial Number in its name so that different DDP
package files can be used on different devices). If the optional package
file exists, download it to the device. If not, download the default
package file.

Log an appropriate message based on whether or not a DDP package
file exists and the return code from the attempt to download it to the
device.  If the download fails and there is not already a package file on
the device, go into "Safe Mode" where some features are not supported.
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Add functions to initialize, parse, and clean structures representing
the DDP package.

Upon completion of package download, read and store the DDP package
contents to these structures.  This configuration is used to
identify the default behavior and later used to update the HW table
entries.
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Add the required defines, structures, and functions to enable downloading
a DDP package.  Before download, checks are performed to ensure the package
is valid and compatible.

Note that package download is not yet requested by the driver as further
initialization is required to utilize the package.
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

The FW build id is currently being displayed as an int which doesn't make
sense. Instead display FW build id as a hex value. Also add other useful
information to the output such as NVM version, API patch info, and FW
build hash.
Signed-off-by: Lukasz Czapnik <lukasz.czapnik@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

The driver is required to send a version to the firmware
to indicate that the driver is up. If the driver doesn't
do this the firmware doesn't behave properly.
Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Fix several spelling typos in comments in t4_hw.c.
Signed-off-by: Arkadiusz Drabczyk <arkadiusz@drabczyk.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

George McCollister says:

====================
add ksz9567 with I2C support to ksz9477 driver

Resurrect KSZ9477 I2C driver support patch originally sent to the list
by Tristram Ha and resolve outstanding issues. It now works as similarly to
the ksz9477 SPI driver as possible, using the same regmap macros.

Add support for ksz9567 to the ksz9477 driver (tested on a board with
ksz9567 connected via I2C).

Remove NET_DSA_TAG_KSZ_COMMON since it's not needed.

Changes since v1:
Put ksz9477_i2c.c includes in alphabetical order.
Added Reviewed-Bys.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Remove the superfluous NET_DSA_TAG_KSZ_COMMON and just use the existing
NET_DSA_TAG_KSZ. Update the description to mention the three switch
families it supports. No functional change.
Signed-off-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add support for the KSZ9567 7-Port Gigabit Ethernet Switch to the
ksz9477 driver. The KSZ9567 supports both SPI and I2C. Oddly the
ksz9567 is already in the device tree binding documentation.
Signed-off-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add KSZ9477 I2C driver support.  The code ksz9477.c and ksz_common.c are
used together to generate the I2C driver.
Signed-off-by: Tristram Ha <Tristram.Ha@microchip.com>
[george.mccollister@gmail.com: bring up to date, use ksz_common regmap macros]
Signed-off-by: George McCollister <george.mccollister@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The PluDevice register provides the authoritative chip model/revision.

Since the model number is purely used for reporting purposes, follow
the hardware team convention of subtracting 0x10 from the PluDevice
register to obtain the chip model/revision number.
Suggested-by: Francois H. Theron <francois.theron@netronome.com>
Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

When tcp sends a TSO packet, adding a PSH flag on it
reduces the sojourn time of GRO packet in GRO receivers.

This is particularly the case under pressure, since RX queues
receive packets for many concurrent flows.

A sender can give a hint to GRO engines when it is
appropriate to flush a super-packet, especially when pacing
is in the picture, since next packet is probably delayed by
one ms.

Having less packets in GRO engine reduces chance
of LRU eviction or inflated RTT, and reduces GRO cost.

We found recently that we must not set the PSH flag on
individual full-size MSS segments [1] :

 Under pressure (CWR state), we better let the packet sit
 for a small delay (depending on NAPI logic) so that the
 ACK packet is delayed, and thus next packet we send is
 also delayed a bit. Eventually the bottleneck queue can
 be drained. DCTCP flows with CWND=1 have demonstrated
 the issue.

This patch allows to slowdown the aggregate traffic without
involving high resolution timers on senders and/or
receivers.

It has been used at Google for about four years,
and has been discussed at various networking conferences.

[1] segments smaller than MSS already have PSH flag set
    by tcp_sendmsg() / tcp_mark_push(), unless MSG_MORE
    has been requested by the user.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Soheil Hassas Yeganeh <soheil@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Tariq Toukan <tariqt@mellanox.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>