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4 years agonet: stmmac: Do not return error code in TC Initialization
Jose Abreu [Wed, 4 Sep 2019 13:16:55 +0000 (15:16 +0200)]
net: stmmac: Do not return error code in TC Initialization

As we can still use the remaining TC callbacks, e.g. CBS. We should not
fail in the initialization only because RX Parser is not available.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: stmmac: xgmac: Add RBU handling in DMA interrupt
Jose Abreu [Wed, 4 Sep 2019 13:16:54 +0000 (15:16 +0200)]
net: stmmac: xgmac: Add RBU handling in DMA interrupt

Add the handling of Receive Buffer Unavailable interrupt in the DMA
handler of XGMAC cores.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: stmmac: selftests: Return proper error code to userspace
Jose Abreu [Wed, 4 Sep 2019 13:16:53 +0000 (15:16 +0200)]
net: stmmac: selftests: Return proper error code to userspace

We can do better than just return 1 to userspace. Lets return a proper
Linux error code.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge tag 'linux-can-next-for-5.4-20190904' of git://git.kernel.org/pub/scm/linux...
David S. Miller [Thu, 5 Sep 2019 10:17:50 +0000 (12:17 +0200)]
Merge tag 'linux-can-next-for-5.4-20190904' of git://git./linux/kernel/git/mkl/linux-can-next

Marc Kleine-Budde says:

====================
pull-request: can-next 2019-09-04 j1939

this is a pull request for net-next/master consisting of 21 patches.

the first 12 patches are by me and target the CAN core infrastructure.
They clean up the names of variables , structs and struct members,
convert can_rx_register() to use max() instead of open coding it and
remove unneeded code from the can_pernet_exit() callback.

The next three patches are also by me and they introduce and make use of
the CAN midlayer private structure. It is used to hold protocol specific
per device data structures.

The next patch is by Oleksij Rempel, switches the
&net->can.rcvlists_lock from a spin_lock() to a spin_lock_bh(), so that
it can be used from NAPI (soft IRQ) context.

The next 4 patches are by Kurt Van Dijck, he first updates his email
address via mailmap and then extends sockaddr_can to include j1939
members.

The final patch is the collective effort of many entities (The j1939
authors: Oliver Hartkopp, Bastian Stender, Elenita Hinds, kbuild test
robot, Kurt Van Dijck, Maxime Jayat, Robin van der Gracht, Oleksij
Rempel, Marc Kleine-Budde). It adds support of SAE J1939 protocol to the
CAN networking stack.

SAE J1939 is the vehicle bus recommended practice used for communication
and diagnostics among vehicle components. Originating in the car and
heavy-duty truck industry in the United States, it is now widely used in
other parts of the world.

P.S.: This pull request doesn't invalidate my last pull request:
      "pull-request: can-next 2019-09-03".
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agorocker: add missing init_net check in FIB notifier
Jiri Pirko [Wed, 4 Sep 2019 07:40:47 +0000 (09:40 +0200)]
rocker: add missing init_net check in FIB notifier

Take only FIB events that are happening in init_net into account. No other
namespaces are supported.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'net-kzfree'
David S. Miller [Thu, 5 Sep 2019 10:06:04 +0000 (12:06 +0200)]
Merge branch 'net-kzfree'

zhong jiang says:

====================
net: Use kzfree() directly

With the help of Coccinelle. We find some place to replace.

@@
expression M, S;
@@

- memset(M, 0, S);
- kfree(M);
+ kzfree(M);
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: mpoa: Use kzfree rather than its implementation.
zhong jiang [Wed, 4 Sep 2019 02:39:12 +0000 (10:39 +0800)]
net: mpoa: Use kzfree rather than its implementation.

Use kzfree instead of memset() + kfree().

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosunrpc: Use kzfree rather than its implementation.
zhong jiang [Wed, 4 Sep 2019 02:39:11 +0000 (10:39 +0800)]
sunrpc: Use kzfree rather than its implementation.

Use kzfree instead of memset() + kfree().

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoixgbe: Use kzfree() rather than its implementation.
zhong jiang [Wed, 4 Sep 2019 02:39:10 +0000 (10:39 +0800)]
ixgbe: Use kzfree() rather than its implementation.

Use kzfree() instead of memset() + kfree().

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge tag 'linux-can-next-for-5.4-20190903' of git://git.kernel.org/pub/scm/linux...
David S. Miller [Thu, 5 Sep 2019 07:57:31 +0000 (09:57 +0200)]
Merge tag 'linux-can-next-for-5.4-20190903' of git://git./linux/kernel/git/mkl/linux-can-next

Marc Kleine-Budde says:

====================
pull-request: can-next 2019-09-03

this is a pull request for net-next/master consisting of 15 patches.

The first patch is by Christer Beskow, targets the kvaser_pciefd driver
and fixes the PWM generator's frequency.

The next three patches are by Dan Murphy, the tcan4x5x is updated to use
a proper interrupts/interrupt-parent DT binding to specify the devices
IRQ line. Further the unneeded wake ups of the device is removed from
the driver.

A patch by me for the mcp25xx driver removes the deprecated board file
setup example. Three patches by Andy Shevchenko simplify clock handling,
update the driver from OF to device property API and simplify the
mcp251x_can_suspend() function.

The remaining 7 patches are by me and clean up checkpatch warnings in
the generic CAN device infrastructure.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agovsock/virtio: a better comment on credit update
Michael S. Tsirkin [Tue, 3 Sep 2019 07:38:16 +0000 (03:38 -0400)]
vsock/virtio: a better comment on credit update

The comment we have is just repeating what the code does.
Include the *reason* for the condition instead.

Cc: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'net-tls-minor-cleanups'
David S. Miller [Thu, 5 Sep 2019 07:49:49 +0000 (09:49 +0200)]
Merge branch 'net-tls-minor-cleanups'

Jakub Kicinski says:

====================
net/tls: minor cleanups

This set is a grab bag of TLS cleanups accumulated in my tree
in an attempt to avoid merge problems with net. Nothing stands
out. First patch dedups context information. Next control path
locking is very slightly optimized. Fourth patch cleans up
ugly #ifdefs.
====================

Reviewed-by: Boris Pismenny <borisp@mellanox.com>
Reviewed-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet/tls: dedup the record cleanup
Jakub Kicinski [Tue, 3 Sep 2019 04:31:06 +0000 (21:31 -0700)]
net/tls: dedup the record cleanup

If retransmit record hint fall into the cleanup window we will
free it by just walking the list. No need to duplicate the code.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet/tls: clean up the number of #ifdefs for CONFIG_TLS_DEVICE
Jakub Kicinski [Tue, 3 Sep 2019 04:31:05 +0000 (21:31 -0700)]
net/tls: clean up the number of #ifdefs for CONFIG_TLS_DEVICE

TLS code has a number of #ifdefs which make the code a little
harder to follow. Recent fixes removed the ifdef around the
TLS_HW define, so we can switch to the often used pattern
of defining tls_device functions as empty static inlines
in the header when CONFIG_TLS_DEVICE=n.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet/tls: narrow down the critical area of device_offload_lock
Jakub Kicinski [Tue, 3 Sep 2019 04:31:04 +0000 (21:31 -0700)]
net/tls: narrow down the critical area of device_offload_lock

On setsockopt path we need to hold device_offload_lock from
the moment we check netdev is up until the context is fully
ready to be added to the tls_device_list.

No need to hold it around the get_netdev_for_sock().
Change the code and remove the confusing comment.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet/tls: don't jump to return
Jakub Kicinski [Tue, 3 Sep 2019 04:31:03 +0000 (21:31 -0700)]
net/tls: don't jump to return

Reusing parts of error path for normal exit will make
next commit harder to read, untangle the two.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet/tls: use the full sk_proto pointer
Jakub Kicinski [Tue, 3 Sep 2019 04:31:02 +0000 (21:31 -0700)]
net/tls: use the full sk_proto pointer

Since we already have the pointer to the full original sk_proto
stored use that instead of storing all individual callback
pointers as well.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoConvert usage of IN_MULTICAST to ipv4_is_multicast
Dave Taht [Mon, 2 Sep 2019 23:29:36 +0000 (16:29 -0700)]
Convert usage of IN_MULTICAST to ipv4_is_multicast

IN_MULTICAST's primary intent is as a uapi macro.

Elsewhere in the kernel we use ipv4_is_multicast consistently.

This patch unifies linux's multicast checks to use that function
rather than this macro.

Signed-off-by: Dave Taht <dave.taht@gmail.com>
Reviewed-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet/sched: cbs: remove redundant assignment to variable port_rate
Colin Ian King [Mon, 2 Sep 2019 18:26:37 +0000 (19:26 +0100)]
net/sched: cbs: remove redundant assignment to variable port_rate

Variable port_rate is being initialized with a value that is never read
and is being re-assigned a little later on. The assignment is redundant
and hence can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'ionic-Add-ionic-driver'
David S. Miller [Thu, 5 Sep 2019 07:24:44 +0000 (09:24 +0200)]
Merge branch 'ionic-Add-ionic-driver'

Shannon Nelson says:

====================
ionic: Add ionic driver

This is a patch series that adds the ionic driver, supporting the Pensando
ethernet device.

In this initial patchset we implement basic transmit and receive.  Later
patchsets will add more advanced features.

Our thanks to Saeed Mahameed, David Miller, Andrew Lunn, Michal Kubecek,
Jacub Kicinski, Jiri Pirko, Yunsheng Lin, and the ever present kbuild
test robots for their comments and suggestions.

New in v7:
 - stop Tx queue if no descriptor space left after a Tx
 - return ETIMEDOUT if the module data can't be copied out safely
 - remove unnecessary synchronize_irq() before free_irq()
 - use eth_prepare_mac_addr_change() and eth_commit_mac_addr_change() helpers
 - propagate error out of ionic_dl_info_get()

New in v6:
 - added a new patch with devlink info tags for ASIC and general FW
 - use the new devlink info tags in the driver
 - fixed up TxRx cleanup on setup failure
 - allow for possible 0 address from dma mapping of Tx buffers
 - remove a few more unnecessary debugfs error checks
 - use innocuous hardcoded strings in the identify message
 - removed a couple of unused functions and definitions
 - fix a leak in the error handling of port_info setup
 - changed from BUILD_BUG_ON() to static_assert()

New in v5:
 - code reorganized for more sane layout, with a side benefit of getting
   rid of a "defined but not used" complaint after patch 5
 - added "ionic_" prefix to struct definitions and fixed up remaining
   reverse christmas tree formatting (I think I got them all...)
 - ndo_open and ndo_stop reworked for better error recovery
 - interrupt coalescing enabled at driver start
 - unnecessary log messaging removed from events
 - double copy added in the module prom read to assure a clean copy
 - added BQL counting
 - fixed a TSO unmap issue found in testing
 - generalize a bit-flag wait with timeout
 - added devlink into earlier code and dropped patch 19

New in v4:
 - use devlink struct alloc for ionic device specific struct
 - add support for devlink_port
 - fixup devlink fixed vs running version usage
 - use bitmap_copy() instead of memcpy() for link_ksettings
 - don't bother to zero out the advertising bits before copying
   in the support bits
 - drop unknown xcvr types (will be expanded on later)
 - flap the connection to force auto-negotiation
 - use is_power_of_2() rather than open code
 - simplify set/get_pauseparam use of pause->autoneg
 - add a couple comments about NIC status data updated in DMA spaces

New in v3:
 - use le32_to_cpu() on queue_count[] values in debugfs
 - dma_free_coherent() can handle NULL pointers
 - remove unused SS_TEST from ethtool handlers
 - one more case of stop the tx ring if there is no room
 - remove a couple of stray // comments

New in v2:
 - removed debugfs error checking and cut down on debugfs use
 - remove redundant bounds checking on incoming values for mtu and ethtool
 - don't alloc rx_filter memory until the match type has been checked
 - free the ionic struct on remove
 - simplified link_up and netif_carrier_ok comparison
 - put stats into ethtool -S, out of debugfs
 - moved dev_cmd and dev_info dumping to ethtool -d, out of debugfs
 - added devlink support
 - used kernel's rss init routines rather than open code
 - set the Kbuild dependant on 64BIT
 - cut down on some unnecessary log messaging
 - cleaned up ionic_get_link_ksettings
 - cleaned up other little code bits here and there
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: Add coalesce and other features
Shannon Nelson [Tue, 3 Sep 2019 22:28:21 +0000 (15:28 -0700)]
ionic: Add coalesce and other features

Interrupt coalescing, tunable copybreak value, and
tx timeout.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: Add RSS support
Shannon Nelson [Tue, 3 Sep 2019 22:28:20 +0000 (15:28 -0700)]
ionic: Add RSS support

Add code to manipulate through ethtool the RSS configuration
used by the NIC.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: Add driver stats
Shannon Nelson [Tue, 3 Sep 2019 22:28:19 +0000 (15:28 -0700)]
ionic: Add driver stats

Add in the detailed statistics for ethtool -S that the driver
keeps as it processes packets.  Display of the additional
debug statistics can be enabled through the ethtool priv-flags
feature.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: Add netdev-event handling
Shannon Nelson [Tue, 3 Sep 2019 22:28:18 +0000 (15:28 -0700)]
ionic: Add netdev-event handling

When the netdev gets a new name from userland, pass that name
down to the NIC for internal tracking.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: Add Tx and Rx handling
Shannon Nelson [Tue, 3 Sep 2019 22:28:17 +0000 (15:28 -0700)]
ionic: Add Tx and Rx handling

Add both the Tx and Rx queue setup and handling.  The related
stats display comes later.  Instead of using the generic napi
routines used by the slow-path commands, the Tx and Rx paths
are simplified and inlined in one file in order to get better
compiler optimizations.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: Add initial ethtool support
Shannon Nelson [Tue, 3 Sep 2019 22:28:16 +0000 (15:28 -0700)]
ionic: Add initial ethtool support

Add in the basic ethtool callbacks for device information
and control.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: Add async link status check and basic stats
Shannon Nelson [Tue, 3 Sep 2019 22:28:15 +0000 (15:28 -0700)]
ionic: Add async link status check and basic stats

Add code to handle the link status event, and wire up the
basic netdev hardware stats.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: Add Rx filter and rx_mode ndo support
Shannon Nelson [Tue, 3 Sep 2019 22:28:14 +0000 (15:28 -0700)]
ionic: Add Rx filter and rx_mode ndo support

Add the Rx filtering and rx_mode NDO callbacks.  Also add
the deferred work thread handling needed to manage the filter
requests outside of the netif_addr_lock spinlock.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: Add management of rx filters
Shannon Nelson [Tue, 3 Sep 2019 22:28:13 +0000 (15:28 -0700)]
ionic: Add management of rx filters

Set up the infrastructure for managing Rx filters.  We can't ask the
hardware for what filters it has, so we keep a local list of filters
that we've pushed into the HW.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: Add the basic NDO callbacks for netdev support
Shannon Nelson [Tue, 3 Sep 2019 22:28:12 +0000 (15:28 -0700)]
ionic: Add the basic NDO callbacks for netdev support

Set up the initial NDO structure and callbacks for netdev
to use, and register the netdev.  This will allow us to do
a few basic operations on the device, but no traffic yet.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: Add notifyq support
Shannon Nelson [Tue, 3 Sep 2019 22:28:11 +0000 (15:28 -0700)]
ionic: Add notifyq support

The AdminQ is fine for sending messages and requests to the NIC,
but we also need to have events published from the NIC to the
driver.  The NotifyQ handles this for us, using the same interrupt
as AdminQ.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: Add adminq action
Shannon Nelson [Tue, 3 Sep 2019 22:28:10 +0000 (15:28 -0700)]
ionic: Add adminq action

Add AdminQ specific message requests and completion handling.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: Add basic adminq support
Shannon Nelson [Tue, 3 Sep 2019 22:28:09 +0000 (15:28 -0700)]
ionic: Add basic adminq support

Most of the NIC configuration happens through the AdminQ message
queue.  NAPI is used for basic interrupt handling and message
queue management.  These routines are set up to be shared among
different types of queues when used in slow-path handling.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: Add interrupts and doorbells
Shannon Nelson [Tue, 3 Sep 2019 22:28:08 +0000 (15:28 -0700)]
ionic: Add interrupts and doorbells

The ionic interrupt model is based on interrupt control blocks
accessed through the PCI BAR.  Doorbell registers are used by
the driver to signal to the NIC that requests are waiting on
the message queues.  Interrupts are used by the NIC to signal
to the driver that answers are waiting on the completion queues.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: Add basic lif support
Shannon Nelson [Tue, 3 Sep 2019 22:28:07 +0000 (15:28 -0700)]
ionic: Add basic lif support

The LIF is the Logical Interface, which represents the external
connections.  The NIC can multiplex many LIFs to a single port,
but in most setups, LIF0 is the primary control for the port.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: Add port management commands
Shannon Nelson [Tue, 3 Sep 2019 22:28:06 +0000 (15:28 -0700)]
ionic: Add port management commands

The port management commands apply to the physical port
associated with the PCI device, which might be shared among
several logical interfaces.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: Add hardware init and device commands
Shannon Nelson [Tue, 3 Sep 2019 22:28:05 +0000 (15:28 -0700)]
ionic: Add hardware init and device commands

The ionic device has a small set of PCI registers, including a
device control and data space, and a large set of message
commands.

Also adds new DEVLINK_INFO_VERSION_GENERIC tags for
ASIC_ID, ASIC_REV, and FW.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: Add basic framework for IONIC Network device driver
Shannon Nelson [Tue, 3 Sep 2019 22:28:04 +0000 (15:28 -0700)]
ionic: Add basic framework for IONIC Network device driver

This patch adds a basic driver framework for the Pensando IONIC
network device.  There is no functionality right now other than
the ability to load and unload.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: Add new info version tags for ASIC and FW
Shannon Nelson [Tue, 3 Sep 2019 22:28:03 +0000 (15:28 -0700)]
devlink: Add new info version tags for ASIC and FW

The current tag set is still rather small and needs a couple
more tags to help with ASIC identification and to have a
more generic FW version.

Cc: Jiri Pirko <jiri@resnulli.us>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'net-dsa-mt7530-PHYLINK-and-port-5'
David S. Miller [Wed, 4 Sep 2019 22:28:23 +0000 (00:28 +0200)]
Merge branch 'net-dsa-mt7530-PHYLINK-and-port-5'

René van Dorst says:

====================
net: dsa: mt7530: Convert to PHYLINK and add support for port 5

1. net: dsa: mt7530: Convert to PHYLINK API
   This patch converts mt7530 to PHYLINK API.
2. dt-bindings: net: dsa: mt7530: Add support for port 5
3. net: dsa: mt7530: Add support for port 5
   These 2 patches adding support for port 5 of the switch.

v2->v3:
 * Removed 'status = "okay"' lines in patch #2
 * Change a port 5 setup message in a debug message in patch #3
 * Added ack-by and tested-by tags
v1->v2:
 * Mostly phylink improvements after review.
rfc -> v1:
 * Mostly phylink improvements after review.
 * Drop phy isolation patches. Adds no value for now.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: dsa: mt7530: Add support for port 5
René van Dorst [Mon, 2 Sep 2019 13:02:26 +0000 (15:02 +0200)]
net: dsa: mt7530: Add support for port 5

Adding support for port 5.

Port 5 can muxed/interface to:
- internal 5th GMAC of the switch; can be used as 2nd CPU port or as
  extra port with an external phy for a 6th ethernet port.
- internal PHY of port 0 or 4; Used in most applications so that port 0
  or 4 is the WAN port and interfaces with the 2nd GMAC of the SOC.

Signed-off-by: René van Dorst <opensource@vdorst.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodt-bindings: net: dsa: mt7530: Add support for port 5
René van Dorst [Mon, 2 Sep 2019 13:02:25 +0000 (15:02 +0200)]
dt-bindings: net: dsa: mt7530: Add support for port 5

MT7530 port 5 has many modes/configurations.
Update the documentation how to use port 5.

Signed-off-by: René van Dorst <opensource@vdorst.com>
Cc: devicetree@vger.kernel.org
Cc: Rob Herring <robh@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: dsa: mt7530: Convert to PHYLINK API
René van Dorst [Mon, 2 Sep 2019 13:02:24 +0000 (15:02 +0200)]
net: dsa: mt7530: Convert to PHYLINK API

Convert mt7530 to PHYLINK API

Signed-off-by: René van Dorst <opensource@vdorst.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agor8152: modify rtl8152_set_speed function
Hayes Wang [Mon, 2 Sep 2019 11:52:28 +0000 (19:52 +0800)]
r8152: modify rtl8152_set_speed function

First, for AUTONEG_DISABLE, we only need to modify MII_BMCR.

Second, add advertising parameter for rtl8152_set_speed(). Add
RTL_ADVERTISED_xxx for advertising parameter of rtl8152_set_speed().
Then, the advertising settings from ethtool could be saved.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'dpaa2-eth-Add-new-statistics-counters'
David S. Miller [Wed, 4 Sep 2019 22:24:06 +0000 (00:24 +0200)]
Merge branch 'dpaa2-eth-Add-new-statistics-counters'

Ioana Radulescu says:

====================
dpaa2-eth: Add new statistics counters

Recent firmware versions offer access to more DPNI statistics
counters. Add the relevant ones to ethtool interface stats.

Also we can now make use of a new counter for in flight egress frames
to avoid sleeping an arbitrary amount of time in the ndo_stop routine.

v2: in patch 2/3, treat separately the error case for unsupported
statistics pages
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodpaa2-eth: Poll Tx pending frames counter on if down
Ioana Radulescu [Mon, 2 Sep 2019 10:23:19 +0000 (13:23 +0300)]
dpaa2-eth: Poll Tx pending frames counter on if down

Starting with firmware version MC10.18.0, a new counter for in flight
Tx frames is offered. Use it when bringing down the interface to
determine when all pending Tx frames have been processed by hardware
instead of sleeping a fixed amount of time.

Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodpaa2-eth: Add new DPNI statistics counters
Ioana Radulescu [Mon, 2 Sep 2019 10:23:18 +0000 (13:23 +0300)]
dpaa2-eth: Add new DPNI statistics counters

Recent firmware versions expose more  DPNI counters.
Export relevant ones via ethtool -S.

Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodpaa2-eth: Minor refactoring in ethtool stats
Ioana Radulescu [Mon, 2 Sep 2019 10:23:17 +0000 (13:23 +0300)]
dpaa2-eth: Minor refactoring in ethtool stats

As we prepare to read more pages from the DPNI stat counters,
reorganize the code a bit to make it easier to extend.

Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agocan: add support of SAE J1939 protocol
The j1939 authors [Mon, 8 Oct 2018 09:48:36 +0000 (11:48 +0200)]
can: add support of SAE J1939 protocol

SAE J1939 is the vehicle bus recommended practice used for communication
and diagnostics among vehicle components. Originating in the car and
heavy-duty truck industry in the United States, it is now widely used in
other parts of the world.

J1939, ISO 11783 and NMEA 2000 all share the same high level protocol.
SAE J1939 can be considered the replacement for the older SAE J1708 and
SAE J1587 specifications.

Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Bastian Stender <bst@pengutronix.de>
Signed-off-by: Elenita Hinds <ecathinds@gmail.com>
Signed-off-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>
Signed-off-by: Maxime Jayat <maxime.jayat@mobile-devices.fr>
Signed-off-by: Robin van der Gracht <robin@protonic.nl>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agocan: extend sockaddr_can to include j1939 members
Kurt Van Dijck [Mon, 8 Oct 2018 09:48:35 +0000 (11:48 +0200)]
can: extend sockaddr_can to include j1939 members

This patch prepares struct sockaddr_can for SAE J1939.

Signed-off-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agocan: add socket type for CAN_J1939
Kurt Van Dijck [Mon, 8 Oct 2018 09:48:34 +0000 (11:48 +0200)]
can: add socket type for CAN_J1939

This patch is a preparation for SAE J1939 and adds CAN_J1939
socket type.

Signed-off-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agocan: introduce CAN_REQUIRED_SIZE macro
Kurt Van Dijck [Mon, 8 Oct 2018 09:48:33 +0000 (11:48 +0200)]
can: introduce CAN_REQUIRED_SIZE macro

The size of this structure will be increased with J1939 support. To stay
binary compatible, the CAN_REQUIRED_SIZE macro is introduced for
existing CAN protocols.

Signed-off-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agomailmap: update email address
Kurt Van Dijck [Mon, 8 Oct 2018 09:48:32 +0000 (11:48 +0200)]
mailmap: update email address

This commit replaces my company's email address with a stable private
address.

Signed-off-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agocan: af_can: use spin_lock_bh() for &net->can.rcvlists_lock
Oleksij Rempel [Tue, 30 Oct 2018 08:00:34 +0000 (09:00 +0100)]
can: af_can: use spin_lock_bh() for &net->can.rcvlists_lock

The can_rx_unregister() can be called from NAPI (soft IRQ) context, at least
by j1939 stack. This leads to potential dead lock with &net->can.rcvlists_lock
called from can_rx_register:
===============================================================================
 WARNING: inconsistent lock state
 4.19.0-20181029-1-g3e67f95ba0d3 #3 Not tainted
 --------------------------------
 inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
 testj1939/224 [HC0[0]:SC1[1]:HE1:SE0] takes:
 1ad0fda3 (&(&net->can.rcvlists_lock)->rlock){+.?.}, at: can_rx_unregister+0x4c/0x1ac
 {SOFTIRQ-ON-W} state was registered at:
   lock_acquire+0xd0/0x1f4
   _raw_spin_lock+0x30/0x40
   can_rx_register+0x5c/0x14c
   j1939_netdev_start+0xdc/0x1f8
   j1939_sk_bind+0x18c/0x1c8
   __sys_bind+0x70/0xb0
   sys_bind+0x10/0x14
   ret_fast_syscall+0x0/0x28
   0xbedc9b64
 irq event stamp: 2440
 hardirqs last  enabled at (2440): [<c01302c0>] __local_bh_enable_ip+0xac/0x184
 hardirqs last disabled at (2439): [<c0130274>] __local_bh_enable_ip+0x60/0x184
 softirqs last  enabled at (2412): [<c08b0bf4>] release_sock+0x84/0xa4
 softirqs last disabled at (2415): [<c013055c>] irq_exit+0x100/0x1b0

 other info that might help us debug this:
  Possible unsafe locking scenario:

        CPU0
        ----
   lock(&(&net->can.rcvlists_lock)->rlock);
   <Interrupt>
     lock(&(&net->can.rcvlists_lock)->rlock);

  *** DEADLOCK ***

 2 locks held by testj1939/224:
  #0: 168eb13b (rcu_read_lock){....}, at: netif_receive_skb_internal+0x3c/0x350
  #1: 168eb13b (rcu_read_lock){....}, at: can_receive+0x88/0x1c0
===============================================================================

To avoid this situation, we should use spin_lock_bh() instead of spin_lock().

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agocan: af_can: remove NULL-ptr checks from users of can_dev_rcv_lists_find()
Marc Kleine-Budde [Mon, 8 Oct 2018 07:02:40 +0000 (09:02 +0200)]
can: af_can: remove NULL-ptr checks from users of can_dev_rcv_lists_find()

Since using the "struct can_ml_priv" for the per device "struct
dev_rcv_lists" the call can_dev_rcv_lists_find() cannot fail anymore.
This patch simplifies af_can by removing the NULL pointer checks from
the dev_rcv_lists returned by can_dev_rcv_lists_find().

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agocan: make use of preallocated can_ml_priv for per device struct can_dev_rcv_lists
Marc Kleine-Budde [Mon, 8 Oct 2018 07:02:39 +0000 (09:02 +0200)]
can: make use of preallocated can_ml_priv for per device struct can_dev_rcv_lists

This patch removes the old method of allocating the per device protocol
specific memory via a netdevice_notifier. This had the drawback, that
the allocation can fail, leading to a lot of null pointer checks in the
code. This also makes the live cycle management of this memory quite
complicated.

This patch switches from the allocating the struct can_dev_rcv_lists in
a NETDEV_REGISTER call to using the dev->ml_priv, which is allocated by
the driver since the previous patch.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agocan: introduce CAN midlayer private and allocate it automatically
Marc Kleine-Budde [Mon, 8 Oct 2018 07:02:38 +0000 (09:02 +0200)]
can: introduce CAN midlayer private and allocate it automatically

This patch introduces the CAN midlayer private structure ("struct
can_ml_priv") which should be used to hold protocol specific per device
data structures. For now it's only member is "struct can_dev_rcv_lists".

The CAN midlayer private is allocated via alloc_netdev()'s private and
assigned to "struct net_device::ml_priv" during device creation. This is
done transparently for CAN drivers using alloc_candev(). The slcan, vcan
and vxcan drivers which are not using alloc_candev() have been adopted
manually. The memory layout of the netdev_priv allocated via
alloc_candev() will looke like this:

  +-------------------------+
  | driver's priv           |
  +-------------------------+
  | struct can_ml_priv      |
  +-------------------------+
  | array of struct sk_buff |
  +-------------------------+

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agocan: af_can: can_pernet_exit(): no need to iterate over and cleanup registered CAN...
Marc Kleine-Budde [Mon, 8 Oct 2018 07:02:37 +0000 (09:02 +0200)]
can: af_can: can_pernet_exit(): no need to iterate over and cleanup registered CAN devices

The networking core takes care and unregisters every network device in
a namespace before calling the can_pernet_exit() hook. This patch
removes the unneeded cleanup.

Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Suggested-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agocan: af_can: can_rx_register(): use max() instead of open coding it
Marc Kleine-Budde [Mon, 8 Oct 2018 07:02:36 +0000 (09:02 +0200)]
can: af_can: can_rx_register(): use max() instead of open coding it

This patch replaces an open coded max by the proper kernel define max().

Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agocan: af_can: give variable holding the CAN receiver and the receiver list a sensible...
Marc Kleine-Budde [Mon, 8 Oct 2018 07:02:35 +0000 (09:02 +0200)]
can: af_can: give variable holding the CAN receiver and the receiver list a sensible name

This patch gives the variables holding the CAN receiver and the receiver
list a better name by renaming them from "r to "rcv" and "rl" to
"recv_list".

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agocan: af_can: rename find_dev_rcv_lists() to can_dev_rcv_lists_find()
Marc Kleine-Budde [Mon, 8 Oct 2018 07:02:34 +0000 (09:02 +0200)]
can: af_can: rename find_dev_rcv_lists() to can_dev_rcv_lists_find()

This patch add the commonly used prefix "can_" to the find_dev_rcv_lists()
function and moves the "find" to the end, as the function returns a struct
can_dev_rcv_list. This improves the overall readability of the code.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agocan: af_can: rename find_rcv_list() to can_rcv_list_find()
Marc Kleine-Budde [Mon, 8 Oct 2018 07:02:33 +0000 (09:02 +0200)]
can: af_can: rename find_rcv_list() to can_rcv_list_find()

This patch add the commonly used prefix "can_" to the find_rcv_list()
function and add the "find" to the end, as the function returns a struct
rcv_list. This improves the overall readability of the code.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agocan: proc: give variable holding the CAN per device receive lists a sensible name
Marc Kleine-Budde [Mon, 8 Oct 2018 07:02:32 +0000 (09:02 +0200)]
can: proc: give variable holding the CAN per device receive lists a sensible name

This patch gives the variables holding the CAN per device receive filter lists
a better name by renaming them from "d" to "dev_rcv_lists".

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agocan: af_can: give variable holding the CAN per device receive lists a sensible name
Marc Kleine-Budde [Mon, 8 Oct 2018 07:02:31 +0000 (09:02 +0200)]
can: af_can: give variable holding the CAN per device receive lists a sensible name

This patch gives the variables holding the CAN receive filter lists a
better name by renaming them from "d" to "dev_rcv_lists".

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agocan: netns: remove "can_" prefix from members struct netns_can
Marc Kleine-Budde [Mon, 8 Oct 2018 07:02:30 +0000 (09:02 +0200)]
can: netns: remove "can_" prefix from members struct netns_can

This patch improves the code reability by removing the redundant "can_"
prefix from the members of struct netns_can (as the struct netns_can itself
is the member "can" of the struct net.)

The conversion is done with:

sed -i \
-e "s/struct can_dev_rcv_lists \*can_rx_alldev_list;/struct can_dev_rcv_lists *rx_alldev_list;/" \
-e "s/spinlock_t can_rcvlists_lock;/spinlock_t rcvlists_lock;/" \
-e "s/struct timer_list can_stattimer;/struct timer_list stattimer; /" \
-e "s/can\.can_rx_alldev_list/can.rx_alldev_list/g" \
-e "s/can\.can_rcvlists_lock/can.rcvlists_lock/g" \
-e "s/can\.can_stattimer/can.stattimer/g" \
include/net/netns/can.h \
net/can/*.[ch]

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agocan: proc: give variables holding CAN statistics a sensible name
Marc Kleine-Budde [Mon, 8 Oct 2018 07:02:29 +0000 (09:02 +0200)]
can: proc: give variables holding CAN statistics a sensible name

This patch rename the variables holding the CAN statistics (can_stats
and can_pstats) to pkg_stats and rcv_lists_stats which reflect better
their meaning.

The conversion is done with:

sed -i \
-e "s/can_stats\([^_]\)/pkg_stats\1/g" \
-e "s/can_pstats/rcv_lists_stats/g" \
net/can/proc.c

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agocan: af_can: give variables holding CAN statistics a sensible name
Marc Kleine-Budde [Mon, 8 Oct 2018 07:02:28 +0000 (09:02 +0200)]
can: af_can: give variables holding CAN statistics a sensible name

This patch rename the variables holding the CAN statistics (can_stats
and can_pstats) to pkg_stats and rcv_lists_stats which reflect better
their meaning.

The conversion is done with:

sed -i \
-e "s/can_stats\([^_]\)/pkg_stats\1/g" \
-e "s/can_pstats/rcv_lists_stats/g" \
net/can/af_can.c

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agocan: netns: give members of struct netns_can holding the statistics a sensible name
Marc Kleine-Budde [Mon, 8 Oct 2018 07:02:27 +0000 (09:02 +0200)]
can: netns: give members of struct netns_can holding the statistics a sensible name

This patch gives the members of the struct netns_can that are holding
the statistics a sensible name, by renaming struct netns_can::can_stats
into struct netns_can::pkg_stats and struct netns_can::can_pstats into
struct netns_can::rcv_lists_stats.

The conversion is done with:

sed -i \
-e "s:\(struct[^*]*\*\)can_stats;.*:\1pkg_stats;:" \
-e "s:\(struct[^*]*\*\)can_pstats;.*:\1rcv_lists_stats;:" \
-e "s/can\.can_stats/can.pkg_stats/g" \
-e "s/can\.can_pstats/can.rcv_lists_stats/g" \
net/can/*.[ch] \
include/net/netns/can.h

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agocan: netns: give structs holding the CAN statistics a sensible name
Marc Kleine-Budde [Mon, 8 Oct 2018 07:02:26 +0000 (09:02 +0200)]
can: netns: give structs holding the CAN statistics a sensible name

This patch renames both "struct s_stats" and "struct s_pstats", to
"struct can_pkg_stats" and "struct can_rcv_lists_stats" to better
reflect their meaning and improve code readability.

The conversion is done with:

sed -i \
-e "s/struct s_stats/struct can_pkg_stats/g" \
-e "s/struct s_pstats/struct can_rcv_lists_stats/g" \
net/can/*.[ch] \
include/net/netns/can.h

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
4 years agoMerge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next...
David S. Miller [Wed, 4 Sep 2019 04:51:25 +0000 (21:51 -0700)]
Merge branch '100GbE' of git://git./linux/kernel/git/jkirsher/next-queue

Jeff Kirsher says:

====================
100GbE Intel Wired LAN Driver Updates 2019-09-03

This series contains updates to ice driver only.

Anirudh adds the ability for the driver to handle EMP resets correctly
by adding the logic to the existing ice_reset_subtask().

Jeb fixes up the logic to properly free up the resources for a switch
rule whether or not it was successful in the removal.

Brett fixes up the reporting of ITR values to let the user know odd ITR
values are not allowed.  Fixes the driver to only disable VLAN pruning
on VLAN deletion when the VLAN being deleted is the last VLAN on the VF
VSI.

Chinh updates the driver to determine the TSA value from the priority
value when in CEE mode.

Bruce aligns the driver with the hardware specification by ensuring that
a PF reset is done as part of the unload logic.  Also update the driver
unloading field, based on the latest hardware specification, which
allows us to remove an unnecessary endian conversion.  Moves #defines
based on their need in the code.

Jesse adds the current state of auto-negotiation in the link up message.
In addition, adds additional information to inform the user of an issue
with the topology/configuration of the link.

Usha updates the driver to allow the maximum TCs that the firmware
supports, rather than hard coding to a set value.

Dave updates the DCB initialization flow to handle the case of an actual
error during DCB init.  Updated the driver to report the current stats,
even when the netdev is down, which aligns with our other drivers.

Mitch fixes the VF reset code flows to ensure that it properly calls
ice_dis_vsi_txq() to notify the firmware that the VF is being reset.

Michal fixes the driver so the DCB is not enabled when the SW LLDP is
activated, which was causing a communication issue with other NICs.  The
problem lies in that DCB was being enabled without checking the number
of TCs.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge tag 'mlx5-updates-2019-09-01-v2' of git://git.kernel.org/pub/scm/linux/kernel...
David S. Miller [Wed, 4 Sep 2019 04:46:13 +0000 (21:46 -0700)]
Merge tag 'mlx5-updates-2019-09-01-v2' of git://git./linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5-updates-2019-09-01  (Software steering support)

Abstract:
--------
Mellanox ConnetX devices supports packet matching, packet modification and
redirection. These functionalities are also referred to as flow-steering.
To configure a steering rule, the rule is written to the device owned
memory, this memory is accessed and cached by the device when processing
a packet.
Steering rules are constructed from multiple steering entries (STE).

Rules are configured using the Firmware command interface. The Firmware
processes the given driver command and translates them to STEs, then
writes them to the device memory in the current steering tables.
This process is slow due to the architecture of the command interface and
the processing complexity of each rule.

The highlight of this patchset is to cut the middle man (The firmware) and
do steering rules programming into device directly from the driver, with
no firmware intervention whatsoever.

Motivation:
-----------
Software (driver managed) steering allows for high rule insertion rates
compared to the FW steering described above, this is achieved by using
internal RDMA writes to the device owned memory instead of the slow
command interface to program steering rules.

Software (driver managed) steering, doesn't depend on new FW
for new steering functionality, new implementations can be done in the
driver skipping the FW layer.

Performance:
------------
The insertion rate on a single core using the new approach allows
programming ~300K rules per sec. (Done via direct raw test to the new mlx5
sw steering layer, without any kernel layer involved).

Test: TC L2 rules
33K/s with Software steering (this patchset).
5K/s  with FW and current driver.
This will improve OVS based solution performance.

Architecture and implementation details:
----------------------------------------
Software steering will be dynamically selected via devlink device
parameter. Example:
$ devlink dev param show pci/0000:06:00.0 name flow_steering_mode
          pci/0000:06:00.0:
          name flow_steering_mode type driver-specific
          values:
             cmode runtime value smfs

mlx5 software steering module a.k.a (DR - Direct Rule) is implemented
and contained in mlx5/core/steering directory and controlled by
MLX5_SW_STEERING kconfig flag.

mlx5 core steering layer (fs_core) already provides a shim layer for
implementing different steering mechanisms, software steering will
leverage that as seen at the end of this series.

When Software Steering for a specific steering domain
(NIC/RDMA/Vport/ESwitch, etc ..) is supported, it will cause rules
targeting this domain to be created using  SW steering instead of FW.

The implementation includes:
Domain - The steering domain is the object that all other object resides
    in. It holds the memory allocator, send engine, locks and other shared
    data needed by lower objects such as table, matcher, rule, action.
    Each domain can contain multiple tables. Domain is equivalent to
    namespaces e.g (NIC/RDMA/Vport/ESwitch, etc ..) as implemented
    currently in mlx5_core fs_core (flow steering core).

Table - Table objects are used for holding multiple matchers, each table
    has a level used to prevent processing loops. Packets are being
    directed to this table once it is set as the root table, this is done
    by fs_core using a FW command. A packet is being processed inside the
    table matcher by matcher until a successful hit, otherwise the packet
    will perform the default action.

Matcher - Matchers objects are used to specify the fields mask for
    matching when processing a packet. A matcher belongs to a table, each
    matcher can hold multiple rules, each rule with different matching
    values corresponding to the matcher mask. Each matcher has a priority
    used for rule processing order inside the table.

Action - Action objects are created to specify different steering actions
    such as count, reformat (encapsulate, decapsulate, ...), modify
    header, forward to table and many other actions. When creating a rule
    a sequence of actions can be provided to be executed on a successful
    match.

Rule - Rule objects are used to specify a specific match on packets as
    well as the actions that should be executed. A rule belongs to a
    matcher.

STE - This layer is used to hold the specific STE format for the device
    and to convert the requested rule to STEs. Each rule is constructed of
    an STE chain, Multiple rules construct a steering graph. Each node in
    the graph is a hash table containing multiple STEs. The index of each
    STE in the hash table is being calculated using a CRC32 hash function.

Memory pool - Used for managing and caching device owned memory for rule
    insertion. The memory is being allocated using DM (device memory) API.

Communication with device - layer for standard RDMA operation using  RC QP
    to configure the device steering.

Command utility - This module holds all of the FW commands that are
    required for SW steering to function.

Patch planning and files:
-------------------------
1) First patch, adds the support to Add flow steering actions to fs_cmd
shim layer.

2) Next 12 patch will add a file per each Software steering
functionality/module as described above. (See patches with title: DR, *)

3) Add CONFIG_MLX5_SW_STEERING for software steering support and enable
build with the new files

4) Next two patches will add the support for software steering in mlx5
steering shim layer
net/mlx5: Add API to set the namespace steering mode
net/mlx5: Add direct rule fs_cmd implementation

5) Last two patches will add the new devlink parameter to select mlx5
steering mode, will be valid only for switchdev mode for now.
Two modes are supported:
    1. DMFS - Device managed flow steering
    2. SMFS - Software/Driver managed flow steering.

    In the DMFS mode, the HW steering entities are created through the
    FW. In the SMFS mode this entities are created though the driver
    directly.

    The driver will use the devlink steering mode only if the steering
    domain supports it, for now SMFS will manages only the switchdev
    eswitch steering domain.

    User command examples:
    - Set SMFS flow steering mode::

        $ devlink dev param set pci/0000:06:00.0 name flow_steering_mode value "smfs" cmode runtime

    - Read device flow steering mode::

        $ devlink dev param show pci/0000:06:00.0 name flow_steering_mode
          pci/0000:06:00.0:
          name flow_steering_mode type driver-specific
          values:
             cmode runtime value smfs
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoice: Only disable VLAN pruning for the VF when all VLANs are removed
Brett Creeley [Thu, 8 Aug 2019 14:39:30 +0000 (07:39 -0700)]
ice: Only disable VLAN pruning for the VF when all VLANs are removed

Currently if the VF adds a VLAN, VLAN pruning will be enabled for that VSI.
Also, when a VLAN gets deleted it will disable VLAN pruning even if other
VLAN(s) exists for the VF. Fix this by only disabling VLAN pruning on the
VF VSI when removing the last VF (i.e. vf->num_vlan == 0).

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoice: Remove enable DCB when SW LLDP is activated
Michal Swiatkowski [Thu, 8 Aug 2019 14:39:29 +0000 (07:39 -0700)]
ice: Remove enable DCB when SW LLDP is activated

Remove code that enables DCB in initialization when SW LLDP is
activated. DCB flag is set or reset before in ice_init_pf_dcb
based on number of TCs. So there is not need to overwrite it.

Setting DCB without checking number of TCs can cause communication
problems with other cards. Host card sends packet with VLAN priority
tag, but client card doesn't strip this tag and ping doesn't work.

Signed-off-by: Michal Swiatkowski <michal.swiatkowski@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>
4 years agoice: Report stats when VSI is down
Dave Ertman [Thu, 8 Aug 2019 14:39:28 +0000 (07:39 -0700)]
ice: Report stats when VSI is down

There is currently a check in get_ndo_stats that
returns before updating stats if the VSI is down
or there are no Tx or Rx queues.  This causes the
netdev to report zero stats with the netdev is down.

Remove the check so that the behavior of reporting
stats is the same as it was in IXGBE.

Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoice: Always notify FW of VF reset
Mitch Williams [Thu, 8 Aug 2019 14:39:26 +0000 (07:39 -0700)]
ice: Always notify FW of VF reset

The call to ice_dis_vsi_txq() acts as the notification to the firmware
that the VF is being reset. Because of this, we need to make this call
every time we reset, regardless of whatever else we do to stop the Tx
queues.

Without this change, VF resets would fail to complete on interfaces that
were up and running.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoice: Correctly handle return values for init DCB
Dave Ertman [Thu, 8 Aug 2019 14:39:25 +0000 (07:39 -0700)]
ice: Correctly handle return values for init DCB

In the init path for DCB, the call to ice_init_dcb()
can return a non-zero value for either an actual
error, or due to the FW lldp engine being stopped.

We are currently treating all non-zero values only as
an indication that the FW LLDP engine is stopped.

Check for an actual error in the DCB init flow.

Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoice: Limit Max TCs on devices with more than 4 ports
Usha Ketineni [Thu, 8 Aug 2019 14:39:24 +0000 (07:39 -0700)]
ice: Limit Max TCs on devices with more than 4 ports

This patch limits the max TCs set by the driver to the value provided by
the firmware as per the capabilities of the device. Otherwise, hard coding
to 8 TC max would fail the device configurations with more than 4 ports.

Signed-off-by: Usha Ketineni <usha.k.ketineni@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>
4 years agoice: Cleanup defines in ice_type.h
Tony Nguyen [Fri, 2 Aug 2019 08:25:33 +0000 (01:25 -0700)]
ice: Cleanup defines in ice_type.h

Conventionally, if the #defines/other are not needed by other header
files being included, #includes are done first followed by #defines
and other stuff. Move the #defines before the #includes to follow this
convention.

Suggested by: Bruce Allan <bruce.w.allan@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>
4 years agoice: print extra message if topology issue
Jesse Brandeburg [Fri, 2 Aug 2019 08:25:32 +0000 (01:25 -0700)]
ice: print extra message if topology issue

The driver needs to inform the user if there is an issue
with the topology / configuration of the link.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoice: add print of autoneg state to link message
Jesse Brandeburg [Fri, 2 Aug 2019 08:25:31 +0000 (01:25 -0700)]
ice: add print of autoneg state to link message

Print the state of auto-negotiation when printing the Link
up message.  Adds new text to the "NIC Link is up" line like
Autoneg: <True | False>

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoice: update driver unloading field for Queue Shutdown AQ command
Bruce Allan [Fri, 2 Aug 2019 08:25:30 +0000 (01:25 -0700)]
ice: update driver unloading field for Queue Shutdown AQ command

According to recent specification versions, the field in the Queue Shutdown
AdminQ command consisting of the "driver unloading" indication is not a 4
byte field (it is byte.bit 16.0).  Change it to a byte and remove the
unnecessary endian conversion.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoice: add needed PFR during driver unload
Bruce Allan [Fri, 2 Aug 2019 08:25:29 +0000 (01:25 -0700)]
ice: add needed PFR during driver unload

According to the specification, a PF Reset must be done as part of the
driver unload flow.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoice: Deduce TSA value from the priority value in the CEE mode
Chinh T Cao [Fri, 2 Aug 2019 08:25:28 +0000 (01:25 -0700)]
ice: Deduce TSA value from the priority value in the CEE mode

In CEE mode, the TSA information can be derived from the reported
priority value.

Signed-off-by: Chinh T Cao <chinh.t.cao@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoice: Report what the user set for coalesce [tx|rx]-usecs
Brett Creeley [Fri, 2 Aug 2019 08:25:27 +0000 (01:25 -0700)]
ice: Report what the user set for coalesce [tx|rx]-usecs

Currently if the user sets an odd value for [tx|rx]-usecs we align the
value because the hardware only understands ITR values in multiples of
2. This seems misleading because we are essentially telling the user
that the ITR value is odd, when in fact we have changed it internally.
Fix this by reporting that setting odd ITR values is not allowed.

Also, while making changes to ice_set_rc_coalesce() I noticed a bit of
code/error duplication. Make the necessary changes to remove the
duplication.

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoice: Fix resource leak in ice_remove_rule_internal()
Jeb Cramer [Fri, 2 Aug 2019 08:25:26 +0000 (01:25 -0700)]
ice: Fix resource leak in ice_remove_rule_internal()

We don't free s_rule if ice_aq_sw_rules() returns a non-zero status.  If
it returned a zero status, s_rule would be freed right after, so this
implies it should be freed within the scope of the function regardless.

Signed-off-by: Jeb Cramer <jeb.j.cramer@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoice: Fix EMP reset handling
Anirudh Venkataramanan [Fri, 2 Aug 2019 08:25:25 +0000 (01:25 -0700)]
ice: Fix EMP reset handling

ice_reset_subtask needs to handle EMP resets as well, as EMP resets
can be triggered by the firmware. This patch adds the logic to do
this.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agonet/mlx5: Add devlink flow_steering_mode parameter
Maor Gottlieb [Wed, 28 Aug 2019 12:10:54 +0000 (15:10 +0300)]
net/mlx5: Add devlink flow_steering_mode parameter

Add new parameter (flow_steering_mode) to control the flow steering
mode of the driver.
Two modes are supported:
1. DMFS - Device managed flow steering
2. SMFS - Software/Driver managed flow steering.

In the DMFS mode, the HW steering entities are created through the
FW. In the SMFS mode this entities are created though the driver
directly.

The driver will use the devlink steering mode only if the steering
domain supports it, for now SMFS will manages only the switchdev eswitch
steering domain.

User command examples:
- Set SMFS flow steering mode::

    $ devlink dev param set pci/0000:06:00.0 name flow_steering_mode value "smfs" cmode runtime

- Read device flow steering mode::

    $ devlink dev param show pci/0000:06:00.0 name flow_steering_mode
      pci/0000:06:00.0:
      name flow_steering_mode type driver-specific
      values:
         cmode runtime value smfs

Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5: Add support to use SMFS in switchdev mode
Maor Gottlieb [Sun, 18 Aug 2019 16:18:11 +0000 (19:18 +0300)]
net/mlx5: Add support to use SMFS in switchdev mode

In case that flow steering mode of the driver is SMFS (Software Managed
Flow Steering), then use the DR (SW steering) API to create the steering
objects.

In addition, add a call to the set peer namespace when switchdev gets
devcom pair event. It is required to support VF LAG in SMFS.

Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5: Add API to set the namespace steering mode
Maor Gottlieb [Sun, 18 Aug 2019 16:15:22 +0000 (19:15 +0300)]
net/mlx5: Add API to set the namespace steering mode

Add API to set the flow steering root namesapce mode.
Setting new mode should be called before any steering operation
is executed on the namespace.
This API is going to be used by steering users such switchdev.

Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5: Add direct rule fs_cmd implementation
Maor Gottlieb [Tue, 20 Aug 2019 07:06:48 +0000 (10:06 +0300)]
net/mlx5: Add direct rule fs_cmd implementation

Add support to create flow steering objects
via direct rule API (SW steering).
New layer is added - fs_dr, this layer translates the command that
fs_core sends to the FW into direct rule API. In case that direct
rule is not supported in some feature then -EOPNOTSUPP is
returned.

Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5: DR, Add CONFIG_MLX5_SW_STEERING for software steering support
Alex Vesker [Tue, 20 Aug 2019 09:28:03 +0000 (12:28 +0300)]
net/mlx5: DR, Add CONFIG_MLX5_SW_STEERING for software steering support

Add new mlx5 Kconfig flag to allow selecting software steering
support and compile all the steering files only if the flag is
selected.

Signed-off-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@mellanox.com>
Reviewed-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5: DR, Expose APIs for direct rule managing
Alex Vesker [Tue, 20 Aug 2019 08:33:40 +0000 (11:33 +0300)]
net/mlx5: DR, Expose APIs for direct rule managing

Expose APIs for direct rule managing to increase insertion rate by
bypassing the firmware.

Signed-off-by: Alex Vesker <valex@mellanox.com>
Reviewed-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5: DR, Add required FW steering functionality
Alex Vesker [Tue, 20 Aug 2019 06:41:25 +0000 (09:41 +0300)]
net/mlx5: DR, Add required FW steering functionality

SW steering is capable of doing many steering functionalities
but there are still some functionalities which are not exposed
to upper layers and therefore performed by the FW.

This is the support for recalculating checksum using a hairpin QP.
The recalculation is required after a modify TTL action which skips
the needed CS calculation in HW.

Signed-off-by: Alex Vesker <valex@mellanox.com>
Reviewed-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5: DR, Expose steering rule functionality
Alex Vesker [Mon, 19 Aug 2019 10:28:35 +0000 (13:28 +0300)]
net/mlx5: DR, Expose steering rule functionality

Rules are the actual objects that tie matchers, header values and
actions. Each rule belongs to a matcher, which can hold multiple rules
sharing the same mask. Each rule is a specific set of values and
actions.
When a packet reaches a matcher it is being matched against the
matcher`s rules. In case of a match over a rule its actions will be
executed. Each rule object contains a set of STEs, where each STE is a
definition of match values and actions defined by the rule.
This file handles the rule operations and processing.

Signed-off-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5: DR, Expose steering action functionality
Alex Vesker [Mon, 19 Aug 2019 16:16:52 +0000 (19:16 +0300)]
net/mlx5: DR, Expose steering action functionality

On rule creation a set of actions can be provided, the actions describe
what to do with the packet in case of a match. It is possible to provide
a set of actions which will be done by order.

Signed-off-by: Alex Vesker <valex@mellanox.com>
Reviewed-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5: DR, Expose steering matcher functionality
Alex Vesker [Mon, 19 Aug 2019 10:21:19 +0000 (13:21 +0300)]
net/mlx5: DR, Expose steering matcher functionality

Matcher defines which packets fields are matched when a packet arrives.
Matcher is a part of a table and can contain one or more rules. Where
rule defines specific values of the matcher's mask definition.

Signed-off-by: Alex Vesker <valex@mellanox.com>
Reviewed-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5: DR, Expose steering table functionality
Alex Vesker [Mon, 19 Aug 2019 08:31:25 +0000 (11:31 +0300)]
net/mlx5: DR, Expose steering table functionality

Tables are objects which are used for storing matchers, each table
belongs to a domain and defined by the domain type. When a packet
reaches the table it is being processed by each of its matchers until a
successful match. Tables can hold multiple matchers ordered by matcher
priority. Each table has a level.

Signed-off-by: Alex Vesker <valex@mellanox.com>
Reviewed-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5: DR, Expose steering domain functionality
Alex Vesker [Mon, 19 Aug 2019 08:30:56 +0000 (11:30 +0300)]
net/mlx5: DR, Expose steering domain functionality

Domain is the frame for all of the dr (direct rule) objects.
There are different domain types which also affect the object under that
domain. Each domain can hold multiple tables which can hold multiple
matchers and so on, this means that all of the dr (direct rule) objects
exist under a specific domain. The domain object also holds the
resources needed for other objects such as memory management and
communication with the device.

Signed-off-by: Alex Vesker <valex@mellanox.com>
Reviewed-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5: DR, Add Steering entry (STE) utilities
Alex Vesker [Mon, 19 Aug 2019 11:14:55 +0000 (14:14 +0300)]
net/mlx5: DR, Add Steering entry (STE) utilities

Steering Entry (STE) object is the basic building block of the steering
map. There are several types of STEs. Each rule can be constructed of
multiple STEs. Each STE dictates which fields of the packet's header are
being matched as well as the information about the next step in map (hit
and miss pointers). The hardware gets a packet and tries to match it
against the STEs, going to either the hit pointer or the miss pointer.
This file handles the STE operations.

Signed-off-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5: DR, Expose an internal API to issue RDMA operations
Alex Vesker [Tue, 20 Aug 2019 06:39:34 +0000 (09:39 +0300)]
net/mlx5: DR, Expose an internal API to issue RDMA operations

Inserting or deleting a rule is done by RDMA read/write operation to SW
ICM device memory. This file provides the support for executing these
operations. It includes allocating the needed resources and providing an
API for writing steering entries to the memory.

Signed-off-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Erez Shitrit <erezsh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>