Use the existing %pad printk format to print dma_addr_t values.
This avoids the following warnings when compiling on the parisc platform:

warning: format '%llx' expects argument of type 'long long unsigned int', but argument 2 has type 'dma_addr_t {aka unsigned int}' [-Wformat=]
Signed-off-by: NHelge Deller <deller@gmx.de>
Acked-by: NFelix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add missing entry for RTL8211C to mdio_device_id table.
Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com>
Fixes: cf87915c ("net: phy: realtek: add support for RTL8211C")
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Make use of the swap macro and remove unnecessary variable *temp*.
This makes the code easier to read and maintain. Also, slightly
refactor some code due to the removal of *temp*.

This code was detected with the help of Coccinelle.
Signed-off-by: NGustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Heiner Kallweit says:

====================
net: phy: add functionality to speed down PHY when waiting for WoL packet

Some network drivers include functionality to speed down the PHY when
suspending and just waiting for a WoL packet because this saves energy.

This patch is based on our recent discussion about factoring out this
functionality to phylib. First user will be the r8169 driver.

v2:
- add warning comment to phy_speed_down regarding usage of sync = false
- remove sync parameter from phy_speed_up
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Some network drivers include functionality to speed down the PHY when
suspending and just waiting for a WoL packet because this saves energy.
This functionality is quite generic, therefore let's factor it out to
phylib.
Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This functionality will also be needed in subsequent patches of this
series, therefore factor it out to a helper.
Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add selftests for tls socket.  Tests various iov and message options,
poll blocking and nonblocking behavior, partial message sends / receives,
 and control message data.  Tests should pass regardless of if TLS
is enabled in the kernel or not, and print a warning message if not.
Signed-off-by: NDave Watson <davejwatson@fb.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Tobin C. Harding says:

====================
docs: Fix failover build warnings

This is my first patch set to net-next.  Please shout loud and clear if
I've botched anything.

Recently failover and net_failover modules were added to the mainline.
Documentation was included in rst format but they were not added to the
toctree in `networking/index.rst`.  Also building docs for net_failover
is currently emitting a few warnings.

Patch 1 adds failover and net_failover to the index toctree
Patch 2 fixes the build warnings for net_failover

I haven't been super active on netdev list so if there is some reason I
missed why these files are not in the index please do say so.

Has there been any discussion on preferred order for the toctree index
list?  I just added them to the bottom of the list.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Currently building the net_failover docs causes a bunch of warnings to
be emitted.  These warnings are all related to indentation and correctly
highlight missing '::' (for code sections).  It looks, from other rst
files in Documentation, that the first column should be indented 2
spaces.

Add '::' before code snippets and indent all snippets uniformly starting
with 2 spaces.

Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: NTobin C. Harding <me@tobin.cc>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Currently we have rst format docs for the failover and net_failover
modules however these docs are not linked to within the index.

Add `failover` and `net_failover` to the networking documentation index.
Signed-off-by: NTobin C. Harding <me@tobin.cc>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Salil Mehta says:

====================
Bug fixes and some minor changes to HNS3 driver

This patch-set presents some fixes and minor changes to the HNS3 Ethernet Driver.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Actually, hclge_get_ring_chain_from_mbx is used to get ring type, tqp id,
and int_gl index from mailbox message. So the comments is incorrect. This
patch fixes it.

Fixes: dde1a86e ("net: hns3: Add mailbox support to PF driver")
Signed-off-by: NFuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: NPeng Li <lipeng321@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

HCLGE_INT_GL_IDX_M and HCLGE_INT_GL_IDX_S are used to set fireware
cmd. When getting int_gl value from mailbox message, we should use
HNAE3_RING_GL_IDX_M and HNAE3_RING_GL_IDX_S.

Fixes: 79eee410 ("net: hns3: add int_gl_idx setup for VF")
Signed-off-by: NFuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: NPeng Li <lipeng321@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

handle->reset_level is assigned to HNAE3_NONE_RESET when client is
initialized, if a tx timeout happens right after initialization,
then handle->reset_level is not resetted to HNAE3_FUNC_RESET in
hclge_reset_event, which will cause reset event not properly
handled problem.

This patch fixes it by setting handle->reset_level properly when
client is initialized.

Fixes: 6d4c3981 ("net: hns3: Changes to make enet watchdog timeout func common for PF/VF")
Signed-off-by: NYunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: NPeng Li <lipeng321@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The configuration of the ring will be used to reinitialize the
ring after the hardware reset is completed. So we should not
release and reacquire this configuration during reset.

Fixes: bb6b94a8 ("net: hns3: Add reset interface implementation in client")
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NPeng Li <lipeng321@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When doing reset, netdev has not been brought up is not an error,
it means that we do not need do the stop operation, so just return
zero.

Fixes: 76ad4f0e ("net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC")
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NPeng Li <lipeng321@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

According to hardware's description, driver should get reset event
from VECTOR0_PF_OTHER_INT_ST(0x20800) instead of
VECTOR0_PF_OTHER_INT_SRC(0x20700).
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NPeng Li <lipeng321@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Netdevice reset should not be requested frequently, a new one
must wait a moment since there may be some work not completed.
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NPeng Li <lipeng321@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Since current locking was not covering certain code where
netdev was being accessed or manipulated, this patch fixes
it.
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NPeng Li <lipeng321@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

According to hardware's description, the head pointer register should
be written before the tail pointer register while doing command queue
initialization.
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NPeng Li <lipeng321@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Boris Pismenny says:

====================
TLS offload rx, netdev & mlx5

The following series provides TLS RX inline crypto offload.

v5->v4:
    - Remove the Kconfig to mutually exclude both IPsec and TLS

v4->v3:
    - Remove the iov revert for zero copy send flow

v2->v3:
    - Fix typo
    - Adjust cover letter
    - Fix bug in zero copy flows
    - Use network byte order for the record number in resync
    - Adjust the sequence provided in resync

v1->v2:
    - Fix bisectability problems due to variable name changes
    - Fix potential uninitialized return value

This series completes the generic infrastructure to offload TLS crypto to
a network devices. It enables the kernel TLS socket to skip decryption and
authentication operations for SKBs marked as decrypted on the receive
side of the data path. Leaving those computationally expensive operations
to the NIC.

This infrastructure doesn't require a TCP offload engine. Instead, the
NIC decrypts a packet's payload if the packet contains the expected TCP
sequence number. The TLS record authentication tag remains unmodified
regardless of decryption. If the packet is decrypted successfully and it
contains an authentication tag, then the authentication check has passed.
Otherwise, if the authentication fails, then the packet is provided
unmodified and the KTLS layer is responsible for handling it.
Out-Of-Order TCP packets are provided unmodified. As a result,
in the slow path some of the SKBs are decrypted while others remain as
ciphertext.

The GRO and TCP layers must not coalesce decrypted and non-decrypted SKBs.
At the worst case a received TLS record consists of both plaintext
and ciphertext packets. These partially decrypted records must be
reencrypted, only to be decrypted.

The notable differences between SW KTLS and NIC offloaded TLS
implementations are as follows:
1. Partial decryption - Software must handle the case of a TLS record
that was only partially decrypted by HW. This can happen due to packet
reordering.
2. Resynchronization - tls_read_size calls the device driver to
resynchronize HW whenever it lost track of the TLS record framing in
the TCP stream.

The infrastructure should be extendable to support various NIC offload
implementations.  However it is currently written with the
implementation below in mind:
The NIC identifies packets that should be offloaded according to
the 5-tuple and the TCP sequence number. If these match and the
packet is decrypted and authenticated successfully, then a syndrome
is provided to software. Otherwise, the packet is unmodified.
Decrypted and non-decrypted packets aren't coalesced by the network stack,
and the KTLS layer decrypts and authenticates partially decrypted records.
The NIC provides an indication whenever a resync is required. The resync
operation is triggered by the KTLS layer while parsing TLS record headers.

Finally, we measure the performance obtained by running single stream
iperf with two Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz machines connected
back-to-back with Innova TLS (40Gbps) NICs. We compare TCP (upper bound)
and KTLS-Offload running both in Tx and Rx. The results show that the
performance of offload is comparable to TCP.

                          | Bandwidth (Gbps) | CPU Tx (%) | CPU rx (%)
TCP                       | 28.8             | 5          | 12
KTLS-Offload-Tx-Rx 	  | 28.6	     | 7          | 14

Paper: https://netdevconf.org/2.2/papers/pismenny-tlscrypto-talk.pdf
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch fixes the byte count indication in CQE for processed IPsec
packets that contain a metadata header.
Signed-off-by: NBoris Pismenny <borisp@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds common functions to handle mellanox metadata headers.
These functions are used by IPsec and TLS to process FPGA metadata.
Signed-off-by: NBoris Pismenny <borisp@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch enables TLS Rx based on available HW capabilities.
Signed-off-by: NBoris Pismenny <borisp@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds software statistics for TLS to count important
events.
Signed-off-by: NBoris Pismenny <borisp@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Implement the TLS rx offload data path according to the
requirements of the TLS generic NIC offload infrastructure.

Special metadata ethertype is used to pass information to
the hardware.

When hardware loses synchronization a special resync request
metadata message is used to request resync.
Signed-off-by: NBoris Pismenny <borisp@mellanox.com>
Signed-off-by: NIlya Lesokhin <ilyal@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add the mlx5 implementation of the TLS Rx routines to add/del TLS
contexts, also add the tls_dev_resync_rx routine
to work with the TLS inline Rx crypto offload infrastructure.
Signed-off-by: NBoris Pismenny <borisp@mellanox.com>
Signed-off-by: NIlya Lesokhin <ilyal@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In Innova TLS, TLS contexts are added or deleted
via a command message over the SBU connection.
The HW then sends a response message over the same connection.

Complete the implementation for Innova TLS (FPGA-based) hardware by
adding support for rx inline crypto offload.
Signed-off-by: NBoris Pismenny <borisp@mellanox.com>
Signed-off-by: NIlya Lesokhin <ilyal@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

For symmetry, we rename mlx5e_tls_offload_context to
mlx5e_tls_offload_context_tx before we add mlx5e_tls_offload_context_rx.
Signed-off-by: NBoris Pismenny <borisp@mellanox.com>
Reviewed-by: NAviad Yehezkel <aviadye@mellanox.com>
Reviewed-by: NTariq Toukan <tariqt@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

zerocopy_from_iter iterates over the message, but it doesn't revert the
updates made by the iov iteration. This patch fixes it. Now, the iov can
be used after calling zerocopy_from_iter.

Fixes: 3c4d7559 ("tls: kernel TLS support")
Signed-off-by: NBoris Pismenny <borisp@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch completes the generic infrastructure to offload TLS crypto to a
network device. It enables the kernel to skip decryption and
authentication of some skbs marked as decrypted by the NIC. In the fast
path, all packets received are decrypted by the NIC and the performance
is comparable to plain TCP.

This infrastructure doesn't require a TCP offload engine. Instead, the
NIC only decrypts packets that contain the expected TCP sequence number.
Out-Of-Order TCP packets are provided unmodified. As a result, at the
worst case a received TLS record consists of both plaintext and ciphertext
packets. These partially decrypted records must be reencrypted,
only to be decrypted.

The notable differences between SW KTLS Rx and this offload are as
follows:
1. Partial decryption - Software must handle the case of a TLS record
that was only partially decrypted by HW. This can happen due to packet
reordering.
2. Resynchronization - tls_read_size calls the device driver to
resynchronize HW after HW lost track of TLS record framing in
the TCP stream.
Signed-off-by: NBoris Pismenny <borisp@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch allows tls_set_sw_offload to fill the context in case it was
already allocated previously.

We will use it in TLS_DEVICE to fill the RX software context.
Signed-off-by: NBoris Pismenny <borisp@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch splits tls_sw_release_resources_rx into two functions one
which releases all inner software tls structures and another that also
frees the containing structure.

In TLS_DEVICE we will need to release the software structures without
freeeing the containing structure, which contains other information.
Signed-off-by: NBoris Pismenny <borisp@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Previously, decrypt_skb also updated the TLS context.
Now, decrypt_skb only decrypts the payload using the current context,
while decrypt_skb_update also updates the state.

Later, in the tls_device Rx flow, we will use decrypt_skb directly.
Signed-off-by: NBoris Pismenny <borisp@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

For symmetry, we rename tls_offload_context to
tls_offload_context_tx before we add tls_offload_context_rx.
Signed-off-by: NBoris Pismenny <borisp@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Prevent coalescing of decrypted and encrypted SKBs in GRO
and TCP layer.
Signed-off-by: NBoris Pismenny <borisp@mellanox.com>
Signed-off-by: NIlya Lesokhin <ilyal@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add new netdev tls op for resynchronizing HW tls context
Signed-off-by: NBoris Pismenny <borisp@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds a netdev feature to configure TLS RX inline crypto offload.
Signed-off-by: NIlya Lesokhin <ilyal@mellanox.com>
Signed-off-by: NBoris Pismenny <borisp@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The decrypted bit is propogated to cloned/copied skbs.
This will be used later by the inline crypto receive side offload
of tls.
Signed-off-by: NBoris Pismenny <borisp@mellanox.com>
Signed-off-by: NIlya Lesokhin <ilyal@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Maxime Chevallier says:

====================
net: mvpp2: add debugfs interface

The PPv2 Header Parser and Classifier are not straightforward to debug,
having easy access to some of the many lookup tables configuration is
helpful during development and debug.

This series adds a basic debugfs interface, allowing to read data from
the Header Parser and some of the Classifier tables.

For now, the interface is read-only, and contains only some basic info.

This was actually used during RSS development, and might be useful to
troubleshoot some issues we might find.

The first patch of the series converts the mvpp2 files to SPDX, which
eases adding the new debugfs dedicated file.

The second patch adds the interface, and exposes basic Header Parser data.

The 3rd patch adds a hit counter for the Header Parser TCAM.

The 4th patch exposes classifier info.

The 5th patch adds some hit counters for some of the classifier engines.

Changes since V1:
- Rebased on the lastest net-next
- Made cls_flow_get non static so that it can be used in mvpp2_debugfs
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>