Commit Graph

73453 Commits

Author SHA1 Message Date
Jakub Kicinski 527d7d1b99 nfp: read mailbox address from TLV caps
Allow specifying alternative vNIC mailbox location in TLV caps.
This way we can size the mailbox to the needs and not necessarily
waste 512B of ctrl memory space.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-19 15:44:18 -05:00
Jakub Kicinski ce991ab666 nfp: read ME frequency from vNIC ctrl memory
PCIe island clock frequency is used when converting coalescing
parameters from usecs to NFP timestamps.  Most chips don't run
at 1200MHz, allow FW to provide us with the real frequency.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-19 15:44:18 -05:00
Jakub Kicinski 73a0329b05 nfp: add TLV capabilities to the BAR
NFP is entirely programmable, including the PCI data interface.
Using a fixed control BAR layout certainly makes implementations
easier, but require careful considerations when space is allocated.
Once BAR area is allocated to one feature nothing else can use it.
Allocating space statically also requires it to be sized upfront,
which leads to either unnecessary limitation or wastage.

We currently have a 32bit capability word defined which tells drivers
which application FW features are supported.   Most of the bits
are exhausted.  The same bits are also reused for enabling specific
features.  Bulk of capabilities don't have a need for an enable bit,
however, leading to confusion and wastage.

TLVs seems like a better fit for expressing capabilities of applications
running on programmable hardware.

This patch leaves the front of the BAR as is, and declares a TLV
capability start at offset 0x58.  Most of the space up to 0x0d90
is already allocated, but the used space can be wrapped with RESERVED
TLVs.  E.g.:

Address    Type         Length
 0x0058    RESERVED      0xe00  /* Wrap basic structures */
 0x0e5c    FEATURE_A     0x004
 0x0e64    FEATURE_B     0x004
 0x0e6c    RESERVED      0x990  /* Wrap qeueue stats */
 0x1800    FEATURE_C     0x100

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-19 15:44:18 -05:00
Jakub Kicinski bf245f1fb0 nfp: improve app not found message
When driver app matching loaded FW is not found users are faced with:

   nfp: failed to find app with ID 0x%02x

This message does not properly explain that matching driver code is
either not built into the driver or the driver is too old.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-19 15:44:18 -05:00
Jakub Kicinski 3eb47dfca0 nfp: protect each repr pointer individually with RCU
Representors are grouped in sets by type.  Currently the whole
sets are under RCU protection, but individual representor pointers
are not.  This causes some inconveniences when representors have
to be destroyed, because we have to allocate new sets to remove
any representors.  Protect the individual pointers with RCU.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-19 15:44:18 -05:00
Jakub Kicinski e1740fb6c1 nfp: add nfp_reprs_get_locked() helper
The write side of repr tables is always done under pf->lock.
Add a helper to dereference repr table pointers under protection
of that lock.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-19 15:44:18 -05:00
Jakub Kicinski bcc93a23ca nfp: register devlink after app is created
Devlink used to have two global locks: devlink lock and port lock,
our lock ordering looked like this:

  devlink lock -> driver's pf->lock -> devlink port lock

After recent changes port lock was replaced with per-instance
lock.  Unfortunately, new per-instance lock is taken on most
operations now.  This means we can only grab the pf->lock from
the port split/unsplit ops.  Lock ordering looks like this:

  devlink lock -> driver's pf->lock -> devlink instance lock

Since we can't take pf->lock from most devlink ops, make sure
nfp_apps are prepared to service them as soon as devlink is
registered.  Locking the pf must be pushed down after
nfp_app_init() callback.

The init order looks like this:
 nfp_app_init
 devlink_register
 nfp_app_start
 netdev/port_register

As soon as app_init is done nfp_apps must be ready to service
devlink-related callbacks.  apps can only register their own
devlink objects from nfp_app_start.

Fixes: 2406e7e546 ("devlink: Add per devlink instance lock")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-19 15:44:18 -05:00
Jakub Kicinski e1a2599db5 nfp: release global resources only on the remove path
NFP app is currently shut down as soon as all the vNICs are gone.
This means we can't depend on the app existing throughout the
lifetime of the device.  Free the app only from PCI remove path.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-19 15:44:18 -05:00
Jakub Kicinski aa3f4b69a7 nfp: core: make scalar CPP helpers fail on short accesses
Currently the helpers for accessing 4 or 8 byte values over
the CPP bus return the length of IO on success.  If the IO
was short caller has to deal with error handling.  The short
IO for 4/8B values is completely impractical.  Make the
helpers return an error if full access was not possible.
Fix the few places which are actually dealing with errors
correctly, most call sites already only deal with negative
return codes.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-19 15:44:18 -05:00
Gal Pressman 63a612f984 net/mlx5e: Add likely to the common RX checksum flow
Most of the packets return true for is_last_ethertype_ip, surround it
with likely compiler hint.

Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-01-19 22:41:33 +02:00
Kamal Heib 1938617735 net/mlx5e: Extend the stats group API to have update_stats()
Extend the stats group API to have an update_stats() callback which
will be used to fetch the hardware or software counters data.

Signed-off-by: Kamal Heib <kamalh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-01-19 22:41:33 +02:00
Kamal Heib a89842811e net/mlx5e: Merge per priority stats groups
Merge the per priority traffic and pfc groups into one group, because
both groups share the same update_stats() callback which will be
introduced in the upcoming patch.

Signed-off-by: Kamal Heib <kamalh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-01-19 22:41:33 +02:00
Eran Ben Elisha 57d689a8ca net/mlx5e: Add per-channel counters infrastructure, use it upon TX timeout
Add per-channel counter ch#_eq_rearm to monitor how many lost interrupt
recovery actions happened upon TX timeouts.

Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-01-19 22:41:33 +02:00
Eran Ben Elisha 7ca560b5af net/mlx5e: Poll event queue upon TX timeout before performing full channels recovery
Up until this patch, on every TX timeout we would try to do channels
recovery.  However, in case of a lost interrupt for an EQ, the channel
associated to it cannot be recovered if reopened as it would never get
another interrupt on sent/received traffic, and eventually ends up with
another TX timeout (Restarting the EQ is not part of channel recovery).

This patch adds a mechanism for explicitly polling EQ in case of a TX
timeout in order to recover from a lost interrupt. If this is not the
case (no pending EQEs), perform a channels full recovery as usual.

Once a lost EQE is recovered, it triggers the NAPI to run and handle all
pending completions. This will free some budget in the bql (via calling
netdev_tx_completed_queue) or by clearing pending TXWQEs and waking up
the queue.  One of the above actions will move the queue to be ready for
transmit again.

Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-01-19 22:41:33 +02:00
Eran Ben Elisha 3a32b26a4e net/mlx5e: Add Event Queue meta data info for TX timeout logs
When TX timeout occurs, EQ consumer index and irqn can help in debug for
understanding the SW state of EQ. Add them to the logger prints for the
relevant EQ only.

Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-01-19 22:41:33 +02:00
Eran Ben Elisha 8499094526 net/mlx5e: Print delta since last transmit per SQ upon TX timeout
When driver callback for TX timeout is being called, it handles all
stopped xmit queues (not only the ones which their timeout expired).
Add usecs since last transmit to TX timeout logs per send queue in order
to monitor if the queue timeout expired.

Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-01-19 22:41:33 +02:00
Or Gerlitz eb9180f792 net/mlx5e: Set hairpin queue size
For a given hairpin packet buffer size, different queue sizes
(values of log_hairpin_num_packets) determine how the data is broken
to strides on the RQ. Currently the chosen value is set to 64B strides.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-01-19 22:41:32 +02:00
Or Gerlitz 4d533e0f86 net/mlx5: Enable setting hairpin queue size
Allow to specify the size of the hairpin queues along with the
packet buffer data size from the core setup code.

If the driver doesn't provide this, the FW applies proper value that
matches the provided data size and a FW chosen RQ stride size.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-01-19 22:41:32 +02:00
Or Gerlitz 3f6d08d196 net/mlx5e: Add RSS support for hairpin
Support RSS for hairpin traffic. We create multiple hairpin RQ/SQ pairs
and RSS TTC table per hairpin instance and steer the related flows
through that table so they are spread between the pairs.

We open one pair per 50Gbs link speed, for all speeds <= 50Gbs, there
is one pair and no RSS while for 100Gbs ports two RSSed pairs.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-01-19 22:41:32 +02:00
Or Gerlitz ddae74ac10 net/mlx5: Vectorize the low level core hairpin object
Enhance the hairpin setup code at the core to support a set of N
(RQ,SQ) pairs. This will be later used by the caller to set RSS
spreading among the different RQs.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-01-19 22:41:32 +02:00
Or Gerlitz 479f074c5b net/mlx5e: Enlarge the NIC TC offload steering prio to support two levels
This will allow to be able and set TC rule whose steering dest is
RSS TTC steering table.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-01-19 22:41:32 +02:00
Or Gerlitz 1ae1df3a11 net/mlx5e: Refactor RSS related objects and code
In order to use RSS for hairpin, we refactor the code that deals with
setup of the TTC steering tables. This is done using an interim ttc
params object that has the flow table attributes, TIR numbers, etc.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-01-19 22:41:32 +02:00
Or Gerlitz 106be53b6b net/mlx5e: Set per priority hairpin pairs
As part of the QoS model, on xmit, the HW mandates that all packets going
through a given SQ have the same priority. To align hairpin SQs with that,
we use the priority given as part of the matching for the hairpin hash key.

This ensures that flows/packets mapped to different HW priorities will
go through different hairpin instances. If no priority is given for
matching, we treat that as an 8th priority, this is in order not to
harm cases where priority is specified.

Only the PCP priority trust model is supported.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-01-19 22:41:32 +02:00
Or Gerlitz d882286853 net/mlx5e: Use vhca id as the hairpin peer identifier
The peer vhca id spans less bits vs the ifindex and can
well serve for the hairpin hash key, move to use that.

This is a pre-step to put more info into the hairpin hash
key in downstream patch while keeping it at 32 bits.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-01-19 22:41:32 +02:00
Ganesh Goudar 24949304c9 cxgb4: IPv6 filter takes 2 tids
on T6, IPv6 filter would occupy 2 tids instead of 4.

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-19 15:09:38 -05:00
Rahul Lakkireddy 91c1953de3 cxgb4: use zlib deflate to compress firmware dump
Use zlib deflate to compress firmware dump. Collect and compress
as much firmware dump as possible into a 32 MB buffer.

Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Vishal Kulkarni <vishal@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-19 14:56:32 -05:00
Rahul Lakkireddy 56cf2635ce cxgb4: update dump collection logic to use compression
Update firmware dump collection logic to use compression when available.
Let collection logic attempt to do compression, instead of returning out
of memory early.

Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Vishal Kulkarni <vishal@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-19 14:56:32 -05:00
Wei Yongjun 8df1d08bf2 mlxsw: spectrum: Make function mlxsw_sp_kvdl_part_occ() static
Fixes the following sparse warning:

drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c:289:5: warning:
 symbol 'mlxsw_sp_kvdl_part_occ' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-19 14:35:32 -05:00
Zhu Yanjun 1da847b992 forcedeth: remove unused variable
The variable miistat is not used. So it is removed.

CC: Srinivas Eeda <srinivas.eeda@oracle.com>
CC: Joe Jin <joe.jin@oracle.com>
CC: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-19 14:32:25 -05:00
David S. Miller aa73dc95b2 linux-can-next-for-4.16-20180119
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Merge tag 'linux-can-next-for-4.16-20180119' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next

Marc Kleine-Budde says:

====================
pull-request: can-next 2018-01-16

this is a pull request for net-next/master consisting of 1 patch.

This patch by Arnd Bergmann for the m_can driver silences a compiler
warning if CONFIG_PM is not selected.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-19 10:30:57 -05:00
David S. Miller 8b7d828788 wireless-drivers-next patches for 4.16
Final few patches before the merge window, nothing really special.
 
 ath9k
 
 * add MSI support (not enabled by default yet)
 
 rtlwifi
 
 * support A-MSDU in A-MPDU aggregation
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Merge tag 'wireless-drivers-next-for-davem-2018-01-19' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next

Kalle Valo says:

====================
wireless-drivers-next patches for 4.16

Final few patches before the merge window, nothing really special.

ath9k

* add MSI support (not enabled by default yet)

rtlwifi

* support A-MSDU in A-MPDU aggregation
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-19 10:26:53 -05:00
Arnd Bergmann 5835919319 can: m_can: mark runtime-PM handlers as __maybe_unused
Building without CONFIG_PM results in a harmless warning:

drivers/net/can/m_can/m_can.c:1763:12: error: 'm_can_runtime_resume' defined but not used [-Werror=unused-function]
drivers/net/can/m_can/m_can.c:1752:12: error: 'm_can_runtime_suspend' defined but not used [-Werror=unused-function]

Marking the functions as __maybe_unused lets the compiler
silently drop them instead.

Fixes: cdf8259d65 ("can: m_can: Add PM Support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2018-01-19 10:41:15 +01:00
Thomas Falcon a0dca10fce ibmvnic: Fix IPv6 packet descriptors
Packet descriptor generation for IPv6 is broken.
Properly set L3 and L4 protocol flags for IPv6 descriptors.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-18 21:19:06 -05:00
Thomas Falcon f68979433d ibmvnic: Fix IP offload control buffer
Set some missing fields in the IP control offload buffer. This buffer is
used to enable checksum and TCP segmentation offload in the VNIC server.
The buffer length field and the checksum offloading bits were not set
properly, so fix that here.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-18 21:19:05 -05:00
Ido Schimmel ed604c5da3 mlxsw: spectrum_router: Free LPM tree upon failure
When a new LPM tree is created, we try to replace the trees in the
existing virtual routers with it. If we fail, the tree needs to be
freed.

Currently, this does not happen in the unlikely case where we fail to
bind the tree to the first virtual router, since its reference count
never transitions from 1 to 0.

Fix that by taking a reference before binding the tree.

Fixes: fc922bb0dd ("mlxsw: spectrum_router: Use one LPM tree for all virtual routers")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-18 20:54:58 -05:00
Jakub Kicinski ca027a1c45 nfp: bpf: add short busy wait for FW replies
Scheduling out and in for every FW message can slow us down
unnecessarily.  Our experiments show that even under heavy load
the FW responds to 99.9% messages within 200 us.  Add a short
busy wait before entering the wait queue.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-18 22:54:26 +01:00
Jakub Kicinski 395cacb5f1 netdevsim: bpf: support fake map offload
Add to netdevsim ability to pretend it's offloading BPF maps.
We only allow allocation of tiny 2 entry maps, to keep things
simple.  Mutex lock may seem heavy for the operations we
perform, but we want to make sure callbacks can sleep.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-18 22:54:25 +01:00
Jakub Kicinski 7a0ef69395 bpf: offload: allow array map offload
The special handling of different map types is left to the driver.
Allow offload of array maps by simply adding it to accepted types.
For nfp we have to make sure array elements are not deleted.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-18 22:54:25 +01:00
David S. Miller 9d383fbb04 wireless-drivers fixes for 4.15
One last set of fixes for regression submitted during the last few days.
 
 bcma & ssb
 
 * fix older build problems which (apparently) recently became more
   frequent in certain MIPS configurations
 
 brcmfmac
 
 * continue driver initialisation even if CLM blob (firmware) file is
   not found
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Merge tag 'wireless-drivers-for-davem-2018-01-17' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers

Kalle Valo says:

====================
wireless-drivers fixes for 4.15

One last set of fixes for regression submitted during the last few days.

bcma & ssb

* fix older build problems which (apparently) recently became more
  frequent in certain MIPS configurations

brcmfmac

* continue driver initialisation even if CLM blob (firmware) file is
  not found
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-18 16:23:10 -05:00
Luis de Bethencourt 4c5386bae9 net/mlx5e: Fix trailing semicolon
The trailing semicolon is an empty statement that does no operation.
Removing it since it doesn't do anything.

Signed-off-by: Luis de Bethencourt <luisbg@kernel.org>
Reviewed-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-18 16:22:11 -05:00
Arnd Bergmann b200bfd611 fm10k: mark PM functions as __maybe_unused
A cleanup of the PM code left an incorrect #ifdef in place, leading
to a harmless build warning:

drivers/net/ethernet/intel/fm10k/fm10k_pci.c:2502:12: error: 'fm10k_suspend' defined but not used [-Werror=unused-function]
drivers/net/ethernet/intel/fm10k/fm10k_pci.c:2475:12: error: 'fm10k_resume' defined but not used [-Werror=unused-function]

It's easier to use __maybe_unused attributes here, since you
can't pick the wrong one.

Fixes: 8249c47c6b ("fm10k: use generic PM hooks instead of legacy PCIe power hooks")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-18 15:52:07 -05:00
Ping-Ke Shih 5f9066930b rtlwifi: Support A-MSDU in A-MPDU capability
Due to the fact that A-MSDU deaggregation is done in software,
we set this flag to support the A-MSDU in A-MPDU

Signed-off-by: Steven Ting <steventing@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-18 15:27:11 +02:00
Jiong Wang eb1d7db927 nfp: bpf: set new jit info fields
This patch set those new jit info fields introduced in this patch set.

Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-18 01:26:15 +01:00
Rex Chang 5a71784317 Net: ethernet: ti: netcp: Fix inbound ping crash if MTU size is greater than 1500
In the receive queue for 4096 bytes fragments, the page address
set in the SW data0 field of the descriptor is not the one we got
when doing the reassembly in receive. The page structure was retrieved
from the wrong descriptor into SW data0 which is then causing a
page fault when UDP checksum is accessing data above 1500.

Signed-off-by: Rex Chang <rchang@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 16:19:37 -05:00
David S. Miller 6ab6dd9e7f linux-can-fixes-for-4.15-20180116
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Merge tag 'linux-can-fixes-for-4.15-20180116' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2018-01-16

this is a pull reqeust of a single patch for net/master:

This patch by Stephane Grosjean fixes a potential bug in the packet
fragmentation in the peak USB driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 16:09:22 -05:00
David S. Miller 4f7d58517f linux-can-next-for-4.16-20180116
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Merge tag 'linux-can-next-for-4.16-20180116' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next

Marc Kleine-Budde says:

====================
pull-request: can-next 2018-01-16

this is a pull request for net-next/master consisting of 9 patches.

This is a series of patches, some of them initially by Franklin S Cooper
Jr, which was picked up by Faiz Abbas. Faiz Abbas added some patches
while working on this series, I contributed one as well.

The first two patches add support to CAN device infrastructure to limit
the bitrate of a CAN adapter if the used CAN-transceiver has a certain
maximum bitrate.

The remaining patches improve the m_can driver. They add support for
bitrate limiting to the driver, clean up the driver and add support for
runtime PM.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 16:08:25 -05:00
Ganesh Goudar baf5086840 cxgb4: restructure VF mgmt code
restructure the code which adds support for configuring
PCIe VF via mgmt netdevice. which was added by
commit 7829451c69 ("cxgb4: Add control net_device for
configuring PCIe VF")

Original work by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 16:04:48 -05:00
Christophe Leroy f8b39039cb net: fs_enet: do not call phy_stop() in interrupts
In case of TX timeout, fs_timeout() calls phy_stop(), which
triggers the following BUG_ON() as we are in interrupt.

[92708.199889] kernel BUG at drivers/net/phy/mdio_bus.c:482!
[92708.204985] Oops: Exception in kernel mode, sig: 5 [#1]
[92708.210119] PREEMPT
[92708.212107] CMPC885
[92708.214216] CPU: 0 PID: 3 Comm: ksoftirqd/0 Tainted: G        W       4.9.61 #39
[92708.223227] task: c60f0a40 task.stack: c6104000
[92708.227697] NIP: c02a84bc LR: c02a947c CTR: c02a93d8
[92708.232614] REGS: c6105c70 TRAP: 0700   Tainted: G        W        (4.9.61)
[92708.241193] MSR: 00021032 <ME,IR,DR,RI>[92708.244818]   CR: 24000822  XER: 20000000
[92708.248767]
GPR00: c02a947c c6105d20 c60f0a40 c62b4c00 00000005 0000001f c069aad8 0001a688
GPR08: 00000007 00000100 c02a93d8 00000000 000005fc 00000000 c6213240 c06338e4
GPR16: 00000001 c06330d4 c0633094 00000000 c0680000 c6104000 c6104000 00000000
GPR24: 00000200 00000000 ffffffff 00000004 00000078 00009032 00000000 c62b4c00
NIP [c02a84bc] mdiobus_read+0x20/0x74
[92708.281517] LR [c02a947c] kszphy_config_intr+0xa4/0xc4
[92708.286547] Call Trace:
[92708.288980] [c6105d20] [c6104000] 0xc6104000 (unreliable)
[92708.294339] [c6105d40] [c02a947c] kszphy_config_intr+0xa4/0xc4
[92708.300098] [c6105d50] [c02a5330] phy_stop+0x60/0x9c
[92708.305007] [c6105d60] [c02c84d0] fs_timeout+0xdc/0x110
[92708.310197] [c6105d80] [c035cd48] dev_watchdog+0x268/0x2a0
[92708.315593] [c6105db0] [c0060288] call_timer_fn+0x34/0x17c
[92708.321014] [c6105dd0] [c00605f0] run_timer_softirq+0x21c/0x2e4
[92708.326887] [c6105e50] [c001e19c] __do_softirq+0xf4/0x2f4
[92708.332207] [c6105eb0] [c001e3c8] run_ksoftirqd+0x2c/0x40
[92708.337560] [c6105ec0] [c003b420] smpboot_thread_fn+0x1f0/0x258
[92708.343405] [c6105ef0] [c003745c] kthread+0xbc/0xd0
[92708.348217] [c6105f40] [c000c400] ret_from_kernel_thread+0x5c/0x64
[92708.354275] Instruction dump:
[92708.357207] 7c0803a6 bbc10018 38210020 4e800020 7c0802a6 9421ffe0 54290024 bfc10018
[92708.364865] 90010024 7c7f1b78 81290008 552902ee <0f090000> 3bc3002c 7fc3f378 90810008
[92708.372711] ---[ end trace 42b05441616fafd7 ]---

This patch moves fs_timeout() actions into an async worker.

Fixes: commit 48257c4f16 ("Add fs_enet ethernet network driver, for several embedded platforms")
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 15:44:16 -05:00
Kai-Heng Feng 0b1655143d r8152: disable RX aggregation on Dell TB16 dock
r8153 on Dell TB15/16 dock corrupts rx packets.

This change is suggested by Realtek. They guess that the XHCI controller
doesn't have enough buffer, and their guesswork is correct, once the RX
aggregation gets disabled, the issue is gone.

ASMedia is currently working on a real sulotion for this issue.

Dell and ODM confirm the bcdDevice and iSerialNumber is unique for TB16.

Note that TB15 has different bcdDevice and iSerialNumber, which are not
unique values. If you still have TB15, please contact Dell to replace it
with TB16.

BugLink: https://bugs.launchpad.net/bugs/1729674
Cc: Mario Limonciello <mario.limonciello@dell.com>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 15:38:56 -05:00
Jason Wang aff3d70a07 tun: allow to attach ebpf socket filter
This patch allows userspace to attach eBPF filter to tun. This will
allow to implement VM dataplane filtering in a more efficient way
compared to cBPF filter by allowing either qemu or libvirt to
attach eBPF filter to tun.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 15:32:10 -05:00
Jason Wang cd5681d7d8 tuntap: rename struct tun_steering_prog to struct tun_prog
To be reused by other eBPF program other than queue selection.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 15:32:10 -05:00
Cong Wang 4df0bfc799 tun: fix a memory leak for tfile->tx_array
tfile->tun could be detached before we close the tun fd,
via tun_detach_all(), so it should not be used to check for
tfile->tx_array.

As Jason suggested, we probably have to clean it up
unconditionally both in __tun_deatch() and tun_detach_all(),
but this requires to check if it is initialized or not.
Currently skb_array_cleanup() doesn't have such a check,
so I check it in the caller and introduce a helper function,
it is a bit ugly but we can always improve it in net-next.

Reported-by: Dmitry Vyukov <dvyukov@google.com>
Fixes: 1576d98605 ("tun: switch to use skb array for tx")
Cc: Jason Wang <jasowang@redhat.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 15:08:28 -05:00
Jiri Pirko 4b23258d6a mlxsw: spectrum_acl: Pass mlxsw_sp_port down to ruleset bind/unbind ops
No need to convert from mlxsw_sp_port to net_device and back again.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:53:58 -05:00
Jiri Pirko 3aaff32304 mlxsw: spectrum_acl: Implement TC block sharing
Benefit from the prepared TC and in-driver ACL infrastructure and
introduce block sharing offload. For that, a new struct "block" is
introduced in spectrum_acl in order to hold a list of specific
block-port bindings.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:53:58 -05:00
Jiri Pirko 02caf4995a mlxsw: spectrum_acl: Don't store netdev and ingress for ruleset unbind
Instead, pass netdev and ingress flag to ruleset unbind op.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:53:57 -05:00
Jiri Pirko 9fe5fdf27e mlxsw: spectrum_acl: Reshuffle code around mlxsw_sp_acl_ruleset_create/destroy
In order to prepare for follow-up changes, make the bind/unbind helpers
very simple. That required move of ht insertion/removal and bind/unbind
calls into mlxsw_sp_acl_ruleset_create/destroy.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:53:57 -05:00
Sathya Perla dd4ea1da12 bnxt_en: export a common switchdev PARENT_ID for all reps of an adapter
Currently the driver exports different switchdev PARENT_IDs for
representors belonging to different SR-IOV PF-pools of an adapter.
This is not correct as the adapter can switch across all vports
of an adapter. This patch fixes this by exporting a common switchdev
PARENT_ID for all reps of an adapter. The PCIE DSN is used as the id.

Signed-off-by: Sathya Perla <sathya.perla@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:48:27 -05:00
Michael Chan c3480a6037 bnxt_en: Add cache line size setting to optimize performance.
The chip supports 64-byte and 128-byte cache line size for more optimal
DMA performance when matched to the CPU cache line size.  The default is 64.
If the system is using 128-byte cache line size, set it to 128.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:48:27 -05:00
Vasundhara Volam 91cdda4071 bnxt_en: Forward VF MAC address to the PF.
Forward hwrm_func_vf_cfg command from VF to PF driver, to store
VF MAC address in PF's context.  This will allow "ip link show"
to display all VF MAC addresses.

Maintain 2 locations of MAC address in VF info structure, one for
a PF assigned MAC and one for VF assigned MAC.

Display VF assigned MAC in "ip link show", only if PF assigned MAC is
not valid.

Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:48:27 -05:00
Vasundhara Volam 92abef361b bnxt_en: Add BCM5745X NPAR device IDs
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:48:26 -05:00
Michael Chan 8f23d638b3 bnxt_en: Expand bnxt_check_rings() to check all resources.
bnxt_check_rings() is called by ethtool, XDP setup, and ndo_setup_tc()
to see if there are enough resources to support the new configuration.
Expand the call to test all resources if the firmware supports the new
API.  With the more flexible resource allocation scheme, this call must
be made to check that all resources are available before committing to
allocate the resources.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:48:26 -05:00
Michael Chan 4673d66468 bnxt_en: Implement new method for the PF to assign SRIOV resources.
Instead of the old method of evenly dividing the resources to the VFs,
use the new firmware API to specify min and max resources for each VF.
This way, there is more flexibility for each VF to allocate more or less
resources.

The min is the absolute minimum for each VF to function.  The max is the
global resources minus the resources used by the PF.  Each VF is
guaranteed the min.  Up to max resources may be available for some VFs.

The PF driver can use one of 2 strategies specified in NVRAM to assign
the resources.  The old legacy strategy of evenly dividing the resources
or the new flexible strategy.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:48:26 -05:00
Michael Chan 6a1eef5b90 bnxt_en: Reserve resources for RFS.
In bnxt_rfs_capable(), add call to reserve vnic resources to support
NTUPLE.  Return true if we can successfully reserve enough vnics.
Otherwise, reserve the minimum 1 VNIC for normal operations not
supporting NTUPLE and return false.

Also, suppress warning message about not enough resources for NTUPLE when
only 1 RX ring is in use.  NTUPLE filters by definition require multiple
RX rings.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:48:26 -05:00
Michael Chan 674f50a5b0 bnxt_en: Implement new method to reserve rings.
The new method will call firmware to reserve the desired tx, rx, cmpl
rings, ring groups, stats context, and vnic resources.  A second query
call will check the actual resources that firmware is able to reserve.
The driver will then trim and adjust based on the actual resources
provided by firmware.  The driver will then reserve the final resources
in use.

This method is a more flexible way of using hardware resources.  The
resources are not fixed and can by adjusted by firmware.  The driver
adapts to the available resources that the firmware can reserve for
the driver.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:48:26 -05:00
Michael Chan 58ea801ac4 bnxt_en: Set initial default RX and TX ring numbers the same in combined mode.
In combined mode, the driver is currently not setting RX and TX ring
numbers the same when firmware can allocate more RX than TX or vice versa.
This will confuse the user as the ethtool convention assumes they are the
same in combined mode.  Fix it by adding bnxt_trim_dflt_sh_rings() to trim
RX and TX ring numbers to be the same as the completion ring number in
combined mode.

Note that if TCs are enabled and/or XDP is enabled, the number of TX rings
will not be the same as RX rings in combined mode.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:48:26 -05:00
Michael Chan be0dd9c410 bnxt_en: Add the new firmware API to query hardware resources.
The new API HWRM_FUNC_RESOURCE_QCAPS provides min and max hardware
resources.  Use the new API when it is supported by firmware.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:48:26 -05:00
Michael Chan 6a4f294705 bnxt_en: Refactor hardware resource data structures.
In preparation for new firmware APIs to allocate hardware resources,
add a new struct bnxt_hw_resc to hold various min, max and reserved
resources.  This new structure is common for PFs and VFs.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:48:26 -05:00
Michael Chan 80fcaf46c0 bnxt_en: Restore MSIX after disabling SRIOV.
After SRIOV has been enabled and disabled, the MSIX vectors assigned to
the VFs have to be re-initialized.  Otherwise they cannot be re-used by
the PF.  For example, increasing the number of PF rings after disabling
SRIOV may fail if the PF uses MSIX vectors previously assigned to the VFs.

To fix this, we add logic in bnxt_restore_pf_fw_resources() to close the
NIC, clear and re-init MSIX, and re-open the NIC.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:48:25 -05:00
Michael Chan 86e953db01 bnxt_en: Refactor bnxt_close_nic().
Add a new __bnxt_close_nic() function to do all the work previously done
in bnxt_close_nic() except waiting for SRIOV configuration.  The new
function will be used in the next patch as part of SRIOV cleanup.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:48:25 -05:00
Michael Chan 894aa69a90 bnxt_en: Update firmware interface to 1.9.0.
The version has new firmware APIs to allocate PF/VF resources more
flexibly.

New toolchains were used to generate this file, resulting in a one-time
large diffstat.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:48:25 -05:00
Martin Blumenstingl fb7d38a70e net: stmmac: dwmac-meson8b: propagate rate changes to the parent clock
On Meson8b the only valid input clock is MPLL2. The bootloader
configures that to run at 500002394Hz which cannot be divided evenly
down to 125MHz using the m250_div clock. Currently the common clock
framework chooses a m250_div of 2 - with the internal fixed
"divide by 10" this results in a RGMII TX clock of 125001197Hz (120Hz
above the requested 125MHz).

Letting the common clock framework propagate the rate changes up to the
parent of m250_mux allows us to get the best possible clock rate. With
this patch the common clock framework calculates a rate of
very-close-to-250MHz (249999701Hz to be exact) for the MPLL2 clock
(which is the mux input). Dividing that by 2 (which is an internal,
fixed divider for the RGMII TX clock) gives us an RGMII TX clock of
124999850Hz (which is only 150Hz off the requested 125MHz, compared to
1197Hz based on the MPLL2 rate set by u-boot and the Amlogic GPL kernel
sources).

SoCs from the Meson GX series are not affected by this change because
the input clock is FCLK_DIV2 whose rate cannot be changed (which is fine
since it's running at 1GHz, so it's already a multiple of 250MHz and
125MHz).

Fixes: 566e825162 ("net: stmmac: add a glue driver for the Amlogic Meson 8b / GXBB DWMAC")
Suggested-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Tested-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:41:05 -05:00
Martin Blumenstingl 433c6cab9d net: stmmac: dwmac-meson8b: fix setting the RGMII TX clock on Meson8b
Meson8b only supports MPLL2 as clock input. The rate of the MPLL2 clock
set by Odroid-C1's u-boot is close to (but not exactly) 500MHz. The
exact rate is 500002394Hz, which is calculated in
drivers/clk/meson/clk-mpll.c using the following formula:
DIV_ROUND_UP_ULL((u64)parent_rate * SDM_DEN, (SDM_DEN * n2) + sdm)
Odroid-C1's u-boot configures MPLL2 with the following values:
- SDM_DEN = 16384
- SDM = 1638
- N2 = 5

The 250MHz clock (m250_div) inside dwmac-meson8b driver is derived from
the MPLL2 clock. Due to MPLL2 running slightly faster than 500MHz the
common clock framework chooses a divider which is too big to generate
the 250MHz clock (a divider of 2 would be needed, but this is rounded up
to a divider of 3). This breaks the RTL8211F RGMII PHY on Odroid-C1
because it requires a (close to) 125MHz RGMII TX clock (on Gbit speeds,
the IP block internally divides that down to 25MHz on 100Mbit/s
connections and 2.5MHz on 10Mbit/s connections - we don't need any
special configuration for that).

Round the divider to the closest value to prevent this issue on Meson8b.
This means we'll now end up with a clock rate for the RGMII TX clock of
125001197Hz (= 125MHz plus 1197Hz), which is close-enough to 125MHz.
This has no effect on the Meson GX SoCs since there fclk_div2 is used as
input clock, which has a rate of 1000MHz (and thus is divisible cleanly
to 250MHz and 125MHz).

Fixes: 566e825162 ("net: stmmac: add a glue driver for the Amlogic Meson 8b / GXBB DWMAC")
Reported-by: Emiliano Ingrassia <ingrassia@epigenesys.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Tested-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:41:05 -05:00
Martin Blumenstingl 4f6a71b84e net: stmmac: dwmac-meson8b: fix internal RGMII clock configuration
Tests (using an oscilloscope and an Odroid-C1 board with a RTL8211F
RGMII PHY) have shown that the PRG_ETH0 register behaves as follows:
- bit 4 is a mux to choose between two parent clocks. according to the
  public S805 datasheet the only supported parent clock is MPLL2 (this
  was not verified using the oscilloscope).
  The public S805/S905 datasheet claims that this bit is reserved.
- bits 9:7 control a one-based divider (register value 1 means "divide
  by 1", etc.) for the input clock. we call this clock the "m250_div"
  clock because it's value is always supposed to be (close to) 250MHz
  (see below for an explanation).
  The description in the public S805/S905 datasheet is a bit cryptic,
  but it comes down to "input clock = 250MHz * value" (which could also
  be expressed as "250MHz = input clock / value")
- there seems to be an internal fixed divide-by-2 clock which takes the
  output from the m250_div and divides it by 2. This is not unusual on
  Amlogic SoCs, since the SDIO (MMC) driver also uses an internal fixed
  divide-by-2 clock.
  This is not documented in the public S805/S905 datasheet
- bit 10 controls a gate clock which enables or disables the RGMII TX
  clock (which is an output on the MAC/SoC and an input in the PHY). we
  call this the "rgmii_tx_en" clock. if this bit is set to "0" the RGMII
  TX clock output is close to 0
  The description for this bit in the public S805/S905 datasheet is
  "Generate 25MHz clock for PHY". Based on these tests it's believed
  that this is wrong, and should probably read "Generate the 125MHz
  RGMII TX clock for the PHY"
- the RGMII TX clock has to be set to 125MHz - the IP block adjusts the
  output (automatically) depending on the line speed (RGMII specifies
  that Gbit connections use a 125MHz clock, 100Mbit/s connections use a
  25MHz clock and 10Mbit/s connections use a 2.5MHz clock. only Gbit and
  100Mbit/s were tested with an oscilloscope). Due to the requirement
  that this clock always has to be set to 125MHz and due to the fixed
  divide-by-2 parent clock this means that m250_div will always end up
  with a rate of (close to) 250MHz.
- bits 6:5 are the TX delay, which is also named "clock phase" in some
  of Amlogic's older GPL kernel sources.

The PHY also has an XTAL_IN pin where a 25MHz clock has to be provided.
Tests with the oscilloscope have shown that this is routed to a crystal
right next to the RTL8211F PHY. The same seems to be true on the Khadas
VIM2 (which uses a GXM SoC) board - however the 25MHz crystal is on the
other side of the PCB there.

This updates the clocks in the dwmac-meson8b driver by replacing the
"m25_div" with the "rgmii_tx_en" clock and additionally introducing a
fixed divide-by-2 clock between "m250_div" and "rgmii_tx_en".
Now we also need to set a frequency of 125MHz on the RGMII clock
(opposed to the 25MHz we set before, with that non-existing
divide-by-5-or-10 divider).

Special thanks go to Linus Lüssing for testing the various bits and
checking the results with an oscilloscope on his Odroid-C1!

Fixes: 566e825162 ("net: stmmac: add a glue driver for the Amlogic Meson 8b / GXBB DWMAC")
Reported-by: Emiliano Ingrassia <ingrassia@epigenesys.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Jerome Brunet <jbrunet@baylibre.com>
Tested-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:41:05 -05:00
Martin Blumenstingl 37512b42f0 net: stmmac: dwmac-meson8b: only configure the clocks in RGMII mode
Neither the m25_div_clk nor the m250_div_clk or m250_mux_clk are used in
RMII mode. The m25_div_clk output is routed to the RGMII PHY's "RGMII
clock".
This means that we don't need to configure the clocks in RMII mode. The
driver however did this - with no effect since the clocks are not routed
to the PHY in RMII mode.

While here also rename meson8b_init_clk to meson8b_init_rgmii_tx_clk to
make it easier to understand the code.

Fixes: 566e825162 ("net: stmmac: add a glue driver for the Amlogic Meson 8b / GXBB DWMAC")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:41:05 -05:00
Jakub Kicinski 416ef9b15c net: sched: red: don't reset the backlog on every stat dump
Commit 0dfb33a0d7 ("sch_red: report backlog information") copied
child's backlog into RED's backlog.  Back then RED did not maintain
its own backlog counts.  This has changed after commit 2ccccf5fb4
("net_sched: update hierarchical backlog too") and commit d7f4f332f0
("sch_red: update backlog as well").  Copying is no longer necessary.

Tested:

$ tc -s qdisc show dev veth0
qdisc red 1: root refcnt 2 limit 400000b min 30000b max 30000b ecn
 Sent 20942 bytes 221 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 1260b 14p requeues 14
  marked 0 early 0 pdrop 0 other 0
qdisc tbf 2: parent 1: rate 1Kbit burst 15000b lat 3585.0s
 Sent 20942 bytes 221 pkt (dropped 0, overlimits 138 requeues 0)
 backlog 1260b 14p requeues 14

Recently RED offload was added.  We need to make sure drivers don't
depend on resetting the stats.  This means backlog should be treated
like any other statistic:

  total_stat = new_hw_stat - prev_hw_stat;

Adjust mlxsw.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Nogah Frankel <nogahf@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 14:29:32 -05:00
Ping-Ke Shih 188b6b092e rtlwifi: btcoex: add rfe_type parameter to btcoex
btcoex configure antenna by rfe_type that is RF type programmed in efuse.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-17 17:09:26 +02:00
Ping-Ke Shih b2283dad6b rtlwifi: btcoex: Add common function for qeurying BT information
This commit implement the common function to sort old features, and add
more new features that are get_supported_feature, get_supported_version,
get_ant_det_val, ble_scan_type, ble_scan_para, bt_dev_info,
forbidden_slot_val, afh_map and etc.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-17 17:09:17 +02:00
Larry Finger 3afb7da469 rtlwifi: btcoex: Remove typedef statements
Each of these typedefs are only referenced in a single location later
in this header. Thus, they are easily removed.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-17 17:09:16 +02:00
Ping-Ke Shih 40d9dd4f1c rtlwifi: btcoex: Remove global variables from btcoex
Remove global variables, so btcoexist can support multiple instances
simultaneously.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-17 17:09:15 +02:00
Ping-Ke Shih a44709bba7 rtlwifi: btcoex: Add power_on_setting routine
After mac power-on sequence, wifi will start to work so notify btcoex the
event to configure registers especially related to antenna. This will not
only help to assign antenna but also to yield better user experience.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-17 17:09:15 +02:00
Tsang-Shian Lin 37e89a0e5a rtlwifi: unlink bss when un-association
When AP change bandwidth setting from 20M to 40M, STA may use old 20M AP
information to association with AP. Driver unlink bss in the
.bss_info_changed of ieee80211_ops to make sure that later scan can get
correct AP bandwidth capability.

Signed-off-by: Tsang-Shian Lin <thlin@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-17 17:09:13 +02:00
Ping-Ke Shih c8abbe79cc rtlwifi: fix scan channel 1 fail after IPS
If there is no connection, driver will enter IPS state. Meanwhile, it
fails to scan channel 1 by the command 'iw dev wlan0 scan freq 2412',
because hardware channel setting lose after IPS. Thus, restore channel
setting from hw->conf.channel set by last rtl_op_config().

Signed-off-by: Tim Lee <timlee@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-17 17:09:10 +02:00
Ping-Ke Shih a3fa3669d1 rtlwifi: Use mutex to replace spin_lock to protect IPS and LPS
Enter/leavel IPS and LPS are large critical section, and they can't use
sleep function because running in atomic-context, which own a spin_lock.
In commit ba9f93f82a ("rtlwifi: Fix enter/exit power_save"), it moves
LPS functions to thread-context, so this commit can simply change LPS's
spin lock to mutex.
Considering IPS functions, rtl_ips_nic_on() may be called by TX tasklet
(softirq-context) that check whether packet is auth frame. Fortunately,
current mac80211 will ask driver to leave IPS using op_config with
changed flag IEEE80211_CONF_CHANGE_IDLE, before issuing auth frame, so
IPS functions can run in thread-context and use mutex to protect critical
section, too.
Also, this commit removes some useless spin locks.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-17 17:09:10 +02:00
Lorenzo Bianconi 98051872fd mt76: fix possible NULL pointer dereferencing in mt76x2_mac_write_txwi()
Verify wcid is not NULL before dereferencing the pointer to initialize
txwi rate/power info

Fixes: 7bc04215a6 ("mt76: add driver code for MT76x2e")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-17 16:49:07 +02:00
Lorenzo Bianconi 99ac5327e9 mt76: fix possible NULL pointer dereferencing in mt76x2_ampdu_action()
Initialize mt76_txq pointer after ieee80211_txq pointer check.
Remove space after the pointer cast

Fixes: 7bc04215a6 ("mt76: add driver code for MT76x2e")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-17 16:49:06 +02:00
David S. Miller c02b3741eb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Overlapping changes all over.

The mini-qdisc bits were a little bit tricky, however.

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-17 00:10:42 -05:00
David S. Miller 7018d1b3f2 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:

====================
pull-request: bpf-next 2018-01-17

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

The main changes are:

1) Add initial BPF map offloading for nfp driver. Currently only
   programs were supported so far w/o being able to access maps.
   Offloaded programs are right now only allowed to perform map
   lookups, and control path is responsible for populating the
   maps. BPF core infrastructure along with nfp implementation is
   provided, from Jakub.

2) Various follow-ups to Josef's BPF error injections. More
   specifically that includes: properly check whether the error
   injectable event is on function entry or not, remove the percpu
   bpf_kprobe_override and rather compare instruction pointer
   with original one, separate error-injection from kprobes since
   it's not limited to it, add injectable error types in order to
   specify what is the expected type of failure, and last but not
   least also support the kernel's fault injection framework, all
   from Masami.

3) Various misc improvements and cleanups to the libbpf Makefile.
   That is, fix permissions when installing BPF header files, remove
   unused variables and functions, and also install the libbpf.h
   header, from Jesper.

4) When offloading to nfp JIT and the BPF insn is unsupported in the
   JIT, then reject right at verification time. Also fix libbpf with
   regards to ELF section name matching by properly treating the
   program type as prefix. Both from Quentin.

5) Add -DPACKAGE to bpftool when including bfd.h for the disassembler.
   This is needed, for example, when building libfd from source as
   bpftool doesn't supply a config.h for bfd.h. Fix from Jiong.

6) xdp_convert_ctx_access() is simplified since it doesn't need to
   set target size during verification, from Jesper.

7) Let bpftool properly recognize BPF_PROG_TYPE_CGROUP_DEVICE
   program types, from Roman.

8) Various functions in BPF cpumap were not declared static, from Wei.

9) Fix a double semicolon in BPF samples, from Luis.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-16 22:42:14 -05:00
Quentin Monnet 74801e50d5 nfp: bpf: reject program on instructions unknown to the JIT compiler
If an eBPF instruction is unknown to the driver JIT compiler, we can
reject the program at verification time.

Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-17 01:15:06 +01:00
Jakub Kicinski 7dfa4d87cf nfp: bpf: print map lookup problems into verifier log
Use the verifier log to output error messages if map lookup
can't be offloaded.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-17 01:15:06 +01:00
Colin Ian King e7e70fa678 bnxt_en: don't update cpr->rx_bytes with uninitialized length len
Currently in the cases where cmp_type == CMP_TYPE_RX_L2_TPA_START_CMP or
CMP_TYPE_RX_L2_TPA_END_CMP the exit path updates cpr->rx_bytes with an
uninitialized length len.  Fix this by adding a new exit path that does
not update the cpr stats with the bogus length len and remove the unused
label next_rx_no_prod.

Detected by CoverityScan, CID#1463807 ("Uninitialized scalar variable")
Fixes: 6a8788f256 ("bnxt_en: add support for software dynamic interrupt moderation")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-16 15:24:29 -05:00
Roland Dreier 70eeff66c4 qed: Fix potential use-after-free in qed_spq_post()
We need to check if p_ent->comp_mode is QED_SPQ_MODE_EBLOCK before
calling qed_spq_add_entry().  The test is fine is the mode is EBLOCK,
but if it isn't then qed_spq_add_entry() might kfree(p_ent).

Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-16 14:57:34 -05:00
Jakub Kicinski 0d9c9f0f40 nfp: use the correct index for link speed table
sts variable is holding link speed as well as state.  We should
be using ls to index into ls_to_ethtool.

Fixes: 265aeb511b ("nfp: add support for .get_link_ksettings()")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-16 14:55:07 -05:00
Yuiko Oshino a5b1379afb lan78xx: Fix failure in USB Full Speed
Fix initialize the uninitialized tx_qlen to an appropriate value when USB
Full Speed is used.

Fixes: 55d7de9de6 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver")
Signed-off-by: Yuiko Oshino <yuiko.oshino@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-16 14:50:15 -05:00
Igor Russkikh 9ec03bf639 net: aquantia: Fix internal stats calculation on rx
skb len should be fetched before gro_receive - otherwise we may get
wrong or even outdated skb data.

Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-16 14:40:01 -05:00
Igor Russkikh 8e1c072fcb net: aquantia: Prepend hw access functions declarations with prefix
Internal functions for registers and HW access were not prefixed.
This introduce noise in global kernel symbols. Here we add explicit prefix
'hw_atl' to all the HW access layer functions.
Alignment and styling were fixed as well.

Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-16 14:40:01 -05:00
Igor Russkikh 3230d01171 net: aquantia: Fix register definitions to linux style
Original driver code had internal registers and masks declarations
in low case and without any prefix.
Here we make all these uppercase and add already used HW_ATL prefix
to recognize these.

Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-16 14:40:01 -05:00
Igor Russkikh db55061564 net: aquantia: Eliminate aq_nic structure abstraction
aq_nic_s was hidden in aq_nic_internal.h, that made it difficult to access
nic fields and structures from other modules.
This change moves aq_nic_s struct into aq_nic.h and thus makes it available
to other driver modules, mainly pci module and hw related module.

Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-16 14:40:01 -05:00
Igor Russkikh 5b97b0d10e net: aquantia: Simplify dependencies between pci modules
Eliminate useless passing of net_device_ops and ethtools_ops through
deep chain of calls.
Move all pci related code into aq_pci_func module.

Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-16 14:40:00 -05:00
Igor Russkikh 4cbc9f92f9 net: aquantia: Add const qualifiers for hardware ops tables
Hardware operations and capabilities tables are constants and
never changed. Declare these as constants.

Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-16 14:40:00 -05:00
Igor Russkikh c40d20150d net: aquantia: Remove duplicate hardware descriptors declarations
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-16 14:40:00 -05:00