Commit Graph

996885 Commits

Author SHA1 Message Date
Jon Maloy
b26b5aa9ce tipc: move creation of publication item one level up in call chain
We instantiate struct publication in tipc_nametbl_insert_publ()
instead of as currently in tipc_service_insert_publ(). This has the
advantage that we can pass a pointer to the publication struct to
the next call levels, instead of the numerous individual parameters
we pass on now. It also gives us a location to keep the contents of
the additional fields we will introduce in a later commit.

Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-17 11:51:04 -07:00
Jon Maloy
998d3907f4 tipc: re-organize members of struct publication
In a future commit we will introduce more members to struct publication.
In order to keep this structure comprehensible we now group some of
its current fields into the sub-structures where they really belong,
- A struct tipc_service_range for the functional address the publication
  is representing.
- A struct tipc_socket_addr for the socket bound to that service range.

We also rename the stack variable 'publ' to just 'p' in a few places.
This is just as easy to understand in the given context, and keeps the
number of wrapped code lines to a minimum.

There are no functional changes in this commit.

Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-17 11:51:04 -07:00
David S. Miller
5c9e418b06 Merge branch 'ethtool-strings'
Alexander Duyck says:

====================
ethtool: Factor out common code related to writing ethtool strings

This patch set is meant to be a cleanup and refactoring of common code bits
from several drivers. Specificlly a number of drivers engage in a pattern
where they will use some variant on an sprintf or memcpy to write a string
into the ethtool string array and then they will increment their pointer by
ETH_GSTRING_LEN.

Instead of having each driver implement this independently I am refactoring
the code so that we have one central function, ethtool_sprintf that does
all this and takes a double pointer to access the data, a formatted string
to print, and the variable arguments that are associated with the string.

Changes from v1:
Fixed usage of char ** vs  unsigned char ** in hisilicon drivers

Changes from RFC:
Renamed ethtool_gsprintf to ethtool_sprintf
Fixed reverse xmas tree issue in patch 2
====================

Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-17 11:42:31 -07:00
Alexander Duyck
acebe5b610 ionic: Update driver to use ethtool_sprintf
Update the ionic driver to make use of ethtool_sprintf. In addition add
separate functions for Tx/Rx stats strings in order to reduce the total
amount of indenting needed in the driver code.

Acked-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-17 11:42:31 -07:00
Alexander Duyck
b82e8118c5 bna: Update driver to use ethtool_sprintf
Update the bnad_get_strings to make use of ethtool_sprintf and avoid
unnecessary line wrapping. To do this we invert the logic for the string
set test and instead exit immediately if we are not working with the stats
strings. In addition the function is broken up into subfunctions for each
area so that we can simply call ethtool_sprintf once for each string in a
given subsection.

Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-17 11:42:31 -07:00
Alexander Duyck
3b78b3067f vmxnet3: Update driver to use ethtool_sprintf
So this patch actually does 3 things.

First it removes a stray white space at the start of the variable
declaration in vmxnet3_get_strings.

Second it flips the logic for the string test so that we exit immediately
if we are not looking for the stats strings. Doing this we can avoid
unnecessary indentation and line wrapping.

Then finally it updates the code to use ethtool_sprintf rather than a
memcpy and pointer increment to write the ethtool strings.

Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-17 11:42:31 -07:00
Alexander Duyck
d7a9a01b4e virtio_net: Update driver to use ethtool_sprintf
Update the code to replace instances of snprintf and a pointer update with
just calling ethtool_sprintf.

Also replace the char pointer with a u8 pointer to avoid having to recast
the pointer type.

Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-17 11:42:31 -07:00
Alexander Duyck
3ae0ed376d netvsc: Update driver to use ethtool_sprintf
Replace instances of sprintf or memcpy with a pointer update with
ethtool_sprintf.

Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-17 11:42:31 -07:00
Alexander Duyck
efbbe4fb59 ena: Update driver to use ethtool_sprintf
Replace instances of snprintf or memcpy with a pointer update with
ethtool_sprintf.

Acked-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-17 11:42:31 -07:00
Alexander Duyck
83cd23974a hisilicon: Update drivers to use ethtool_sprintf
Update the hisilicon drivers to make use of ethtool_sprintf. The general
idea is to reduce code size and overhead by replacing the repeated pattern
of string printf statements and ETH_STRING_LEN counter increments.

Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-17 11:42:30 -07:00
Alexander Duyck
6a143a7cf9 nfp: Replace nfp_pr_et with ethtool_sprintf
The nfp_pr_et function is nearly identical to ethtool_sprintf except for
the fact that it passes the pointer by value and as a return whereas
ethtool_sprintf passes it as a pointer.

Since they are so close just update nfp to make use of ethtool_sprintf

Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-17 11:42:30 -07:00
Alexander Duyck
c8d4725e98 intel: Update drivers to use ethtool_sprintf
Update the Intel drivers to make use of ethtool_sprintf. The general idea
is to reduce code size and overhead by replacing the repeated pattern of
string printf statements and ETH_STRING_LEN counter increments.

Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-17 11:42:30 -07:00
Alexander Duyck
7888fe53b7 ethtool: Add common function for filling out strings
Add a function to handle the common pattern of printing a string into the
ethtool strings interface and incrementing the string pointer by the
ETH_GSTRING_LEN. Most of the drivers end up doing this and several have
implemented their own versions of this function so it would make sense to
consolidate on one implementation.

Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-17 11:42:30 -07:00
David S. Miller
0c88eda9f5 mlx5-updates-2021-03-16
mlx5 uplink representor netdev persistence.
 
 Before this patchset we used to have separate netdevs for Native NIC mode
 and Switchdev mode (uplink representor netdev), meaning that if user
 switches modes between Native to Switchdev and vice versa, the driver
 would cleanup the current netdev representor and create a new one for the
 new mode, such behavior created an administrative nightmare for users,
 where users need to be aware of such loss of both data path and control
 path configurations, e.g. netdev attributes and arp/route tables,
 where the later is more painful.
 
 A simple solution for this is not to replace the netdev in first place
 and use a single netdev to serve the uplink/physical port whether it is
 in switchdev mode or native mode.
 
 We already have different HW profiles for each netdev mode, in this series
 we just replace the HW profile on the fly and we keep the same netdev
 attached.
 
 Refactoring: Some refactoring has been made to overcome some technical
 difficulties
 1) The netdev is created with the maximum amount of tx/rx queues to serve
 the two profiles.
 
 2) Some ndos are not supported in some modes, so we added a mode check for
    such cases, e.g legacy sriov ndos must be blocked in switchdev mode.
 
 3) Some mlx5 netdev private attributes need to be moved out of profiles
    and kept in a persistent place, where the netdev is created
    e.g devlink port and other global HW resources
 
 4) The netdev devlink port is now always registered with the switch id
 
 Implementation: the last three patches implement the mechanism now as the
 netdev can be shared.
 
 5) Don't recreate the netdev on switchdev mode changes
 6) Prevent changing switchdev mode when some netdev operations
 are active, mostly when TC rules are being processed.
 This is required since the netdev is kept registered while switchdev mode
 can be changed.
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Merge tag 'mlx5-updates-2021-03-16' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5-updates-2021-03-16

mlx5 uplink representor netdev persistence.

Before this patchset we used to have separate netdevs for Native NIC mode
and Switchdev mode (uplink representor netdev), meaning that if user
switches modes between Native to Switchdev and vice versa, the driver
would cleanup the current netdev representor and create a new one for the
new mode, such behavior created an administrative nightmare for users,
where users need to be aware of such loss of both data path and control
path configurations, e.g. netdev attributes and arp/route tables,
where the later is more painful.

A simple solution for this is not to replace the netdev in first place
and use a single netdev to serve the uplink/physical port whether it is
in switchdev mode or native mode.

We already have different HW profiles for each netdev mode, in this series
we just replace the HW profile on the fly and we keep the same netdev
attached.

Refactoring: Some refactoring has been made to overcome some technical
difficulties
1) The netdev is created with the maximum amount of tx/rx queues to serve
the two profiles.

2) Some ndos are not supported in some modes, so we added a mode check for
   such cases, e.g legacy sriov ndos must be blocked in switchdev mode.

3) Some mlx5 netdev private attributes need to be moved out of profiles
   and kept in a persistent place, where the netdev is created
   e.g devlink port and other global HW resources

4) The netdev devlink port is now always registered with the switch id

Implementation: the last three patches implement the mechanism now as the
netdev can be shared.

5) Don't recreate the netdev on switchdev mode changes
6) Prevent changing switchdev mode when some netdev operations
are active, mostly when TC rules are being processed.
This is required since the netdev is kept registered while switchdev mode
can be changed.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-17 11:22:39 -07:00
Roi Dayan
7dc84de98b net/mlx5: E-Switch, Protect changing mode while adding rules
We re-use the native NIC port net device instance for the Uplink
representor, a driver currently cannot unbind TC setup callback
actively, hence protect changing E-Switch mode while adding rules.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2021-03-16 16:48:43 -07:00
Roi Dayan
c55479d0cb net/mlx5: E-Switch, Change mode lock from mutex to rw semaphore
E-Switch mode change routine will take the write lock to prevent any
consumer to access the E-Switch resources while E-Switch is going
through a mode change.

In the next patch
E-Switch consumers (e.g vport representors) will take read_lock prior to
accessing E-Switch resources to prevent E-Switch mode changing in the
middle of the operation.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2021-03-16 16:48:42 -07:00
Roi Dayan
7a9fb35e8c net/mlx5e: Do not reload ethernet ports when changing eswitch mode
When switching modes between legacy and switchdev and back, do not
reload ethernet interfaces. just change the profile from nic profile
to uplink rep profile in switchdev mode.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2021-03-16 16:48:42 -07:00
Roi Dayan
fec2b4bb39 net/mlx5e: Unregister eth-reps devices first
When we clean all the interfaces, i.e. rescan or reload module,
we need to clean eth-reps devices first, before eth devices.

We will re-use the native NIC port net device instance for the Uplink
representor. Changing eswitch mode will skip destroying the eth device
so the net device won't be destroyed and only change the profile.

Creating uplink eth-rep will initialize the representor related resources.
In that sense when we destroy all devices we first need to destroy
eth-rep devices so uplink eth-rep will clean all representor related
resources and only then destroy the eth device which will destroy rest
of the resources and the net device.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2021-03-16 16:48:42 -07:00
Roi Dayan
c27971d08a net/mlx5: Move devlink port from mlx5e priv to mlx5e resources
We re-use the native NIC port net device instance for the Uplink
representor, and the devlink port.
When changing profiles we reset the mlx5e priv but we should still
use the devlink port so move it to mlx5e resources.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2021-03-16 16:48:41 -07:00
Roi Dayan
c276aae8c1 net/mlx5: Move mlx5e hw resources into a sub object
This is to separate between resources attributes and other
attributes we will want to use.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2021-03-16 16:48:41 -07:00
Roi Dayan
5a65d85dc7 net/mlx5e: Register nic devlink port with switch id
We will re-use the native NIC port net device instance for the Uplink
representor. Since the netdev will be kept registered while we engage
switchdev mode also the devlink will be kept registered.
Register the nic devlink port with switch id so it will be available
when changing profiles.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2021-03-16 16:48:40 -07:00
Roi Dayan
865d6d1c2d net/mlx5e: Move devlink port register and unregister calls
We will re-use the native NIC port net device instance for the Uplink
representor. As such we also don't want to unregister/register the
devlink port as part of the profile.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2021-03-16 16:48:40 -07:00
Roi Dayan
2ff349c5ed net/mlx5e: Verify dev is present in some ndos
We will re-use the native NIC port net device instance for the Uplink
representor. While changing profiles private resources are not
available but some ndos are not checking if the netdev is present.
So for those ndos check the netdev is present in the driver before
accessing the private resources.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2021-03-16 16:48:40 -07:00
Roi Dayan
c97a2c0691 net/mlx5e: Use nic mode netdev ndos and ethtool ops for uplink representor
Remove dedicated uplink rep netdev ndos and ethtools ops.
We will re-use the native NIC port net device instance and ethtool ops for
the Uplink representor.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2021-03-16 16:48:39 -07:00
Roi Dayan
ee5260307c net/mlx5e: Add offload stats ndos to nic netdev ops
We will re-use the native NIC port net device instance for the Uplink
representor, hence same ndos must be used.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2021-03-16 16:48:39 -07:00
Roi Dayan
ec9457a6f6 net/mlx5e: Distinguish nic and esw offload in tc setup block cb
We will re-use the native NIC port net device instance for the Uplink
representor, hence same ndos will be used.
Now we need to distinguish in the TC callback if the mode is legacy or
switchdev and set the proper flag.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2021-03-16 16:48:38 -07:00
Roi Dayan
1aa48ca6aa net/mlx5e: Allow legacy vf ndos only if in legacy mode
We will re-use the native NIC port net device instance for the Uplink
representor. Several VF ndo ops are not relevant in switchdev mode.
Disallow them when eswitch mode is not legacy as a preparation.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2021-03-16 16:48:38 -07:00
Saeed Mahameed
f031dbd530 net/mlx5e: Same max num channels for both nic and uplink profiles
In downstream patches NIC netdev can change profile dynamically from
NIC mode to uplink mode and vise-versa. It is required that both profiles
must advertise the same max amount of tx/rx queues.

Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
2021-03-16 16:48:37 -07:00
Roi Dayan
7a126a43a3 net: Change dev parameter to const in netif_device_present()
Not all ndos check the present bit before calling the ndo and the driver
may want to check it. Sometimes the dev parameter passed as const so we
pass it to netif_device_present() as const.
Since netif_device_present() doesn't modify dev parameter anyway, declare
it as const.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2021-03-16 16:48:37 -07:00
Flavio Leitner
ebfbc46b35 openvswitch: Warn over-mtu packets only if iface is UP.
It is not unusual to have the bridge port down. Sometimes
it has the old MTU, which is fine since it's not being used.

However, the kernel spams the log with a warning message
when a packet is going to be sent over such port. Fix that
by warning only if the interface is UP.

Signed-off-by: Flavio Leitner <fbl@sysclose.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 16:28:30 -07:00
David S. Miller
01035bcc0f Revert "net: socket: use BIT() for MSG_*"
This reverts commit 0bb3262c02.

Breaks things on mips64/qemu

Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:52:15 -07:00
David S. Miller
35db476a29 Merge branch 'ocelot-mrp'
Horatiu Vultur says:

====================
net: ocelot: Extend MRP

This patch series extends the current support of MRP in Ocelot driver.
Currently the forwarding of the frames happened in SW because all frames
were trapped to CPU. With this patch the MRP frames will be forward in HW.

v1 -> v2:
 - create a patch series instead of single patch
 - rename ocelot_mrp_find_port to ocelot_mrp_find_partner_port
 - rename PGID_MRP to PGID_BLACKHOLE
 - use GFP_KERNEL instead of GFP_ATOMIC
 - fix other whitespace issues
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:49:52 -07:00
Horatiu Vultur
2ed2c5f039 net: ocelot: Remove ocelot_xfh_get_cpuq
Now when extracting frames from CPU the cpuq is not used anymore so
remove it.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:49:52 -07:00
Horatiu Vultur
7c588c3e96 net: ocelot: Extend MRP
This patch extends MRP support for Ocelot. It allows to have multiple
rings and when the node has the MRC role it forwards MRP Test frames in
HW. For MRM there is no change.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:49:52 -07:00
Horatiu Vultur
ebb1bb4013 net: ocelot: Add PGID_BLACKHOLE
Add a new PGID that is used not to forward frames anywhere. It is used
by MRP to make sure that MRP Test frames will not reach CPU port.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:49:52 -07:00
David S. Miller
0d40597082 Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue
Tony Nguyen says:

====================
40GbE Intel Wired LAN Driver Updates 2021-03-16

This series contains updates to i40e, ixgbe, and ice drivers.

Magnus Karlsson says:

Optimize run_xdp_zc() for the XDP program verdict being XDP_REDIRECT
in the xsk zero-copy path. This path is only used when having AF_XDP
zero-copy on and in that case most packets will be directed to user
space. This provides around 100k extra packets in throughput on my
server when running l2fwd in xdpsock.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:34:15 -07:00
David S. Miller
46bb5a9c8b Merge branch 'mlxsw-Add-support-for-egress-and-policy-based-sampling'
Ido Schimmel says:

====================
mlxsw: Add support for egress and policy-based sampling

So far mlxsw only supported ingress sampling using matchall classifier.
This series adds support for egress sampling and policy-based sampling
using flower classifier on Spectrum-2 and newer ASICs. As such, it is
now possible to issue these commands:

 # tc filter add dev swp1 egress pref 1 proto all matchall action sample rate 100 group 1

 # tc filter add dev swp2 ingress pref 1 proto ip flower dst_ip 198.51.100.1 action sample rate 100 group 2

When performing egress sampling (using either matchall or flower) the
ASIC is able to report the end-to-end latency which is passed to the
psample module.

Series overview:

Patches #1-#3 are preparations without any functional changes

Patch #4 generalizes the idea of sampling triggers and creates a hash
table to track active sampling triggers in preparation for egress and
policy-based triggers. The motivation is explained in the changelog

Patch #5 flips mlxsw to start using this hash table instead of storing
ingress sampling triggers as an attribute of the sampled port

Patch #6 finally adds support for egress sampling using matchall
classifier

Patches #7-#8 add support for policy-based sampling using flower
classifier

Patches #9 extends the mlxsw sampling selftest to cover the new triggers

Patch #10 makes sure that egress sampling configuration only fails on
Spectrum-1
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:32:23 -07:00
Ido Schimmel
0f967d9e5a selftests: mlxsw: Test egress sampling limitation on Spectrum-1 only
Make sure egress sampling configuration only fails on Spectrum-1, given
that mlxsw now supports it on Spectrum-{2,3}.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:32:23 -07:00
Ido Schimmel
f0b692c4ee selftests: mlxsw: Add tc sample tests for new triggers
Test that packets are sampled when tc-sample is used with matchall
egress binding and flower classifier. Verify that when performing
sampling on egress the end-to-end latency is reported as metadata.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:32:23 -07:00
Ido Schimmel
45aad0b704 mlxsw: spectrum_acl: Offload FLOW_ACTION_SAMPLE
Implement support for action sample when used with a flower classifier
by implementing the required sampler_add() / sampler_del() callbacks and
registering an Rx listener for the sampled packets.

The sampler_add() callback returns an error for Spectrum-1 as the
functionality is not supported. In Spectrum-{2,3} the callback creates a
mirroring agent towards the CPU. The agent's identifier is used by the
policy engine code to mirror towards the CPU with probability.

The Rx listener for the sampled packet is registered with the 'policy
engine' mirroring reason and passes trapped packets to the psample
module after looking up their parameters (e.g., sampling group).

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:32:22 -07:00
Ido Schimmel
ca19ea63f7 mlxsw: core_acl_flex_actions: Add mirror sampler action
Add core functionality required to support mirror sampler action in the
policy engine. The switch driver (e.g., 'mlxsw_spectrum') is required to
implement the sampler_add() / sampler_del() callbacks that perform the
necessary configuration before the sampler action can be installed. The
next patch will implement it for Spectrum-{2,3}, while Spectrum-1 will
return an error, given it is not supported.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:32:22 -07:00
Ido Schimmel
54d0e963f6 mlxsw: spectrum_matchall: Add support for egress sampling
Allow user space to install a matchall classifier with sample action on
egress. This is only supported on Spectrum-2 onwards, so Spectrum-1 will
continue to return an error.

Programming the hardware to sample on egress is identical to ingress
sampling with the sole change of using a different sampling trigger.

Upon receiving a sampled packet, the sampling trigger (ingress vs.
egress) will be encoded in the mirroring reason in the Completion Queue
Element (CQE). The mirroring reason is used to lookup the sampling
parameters (e.g., psample group) which are passed to the psample module.

Note that locally generated packets that are sampled are simply
consumed. This is done for several reasons.

First, such packets do not have an ingress netdev given that their Rx
local port is the CPU port. This breaks several basic assumptions.

Second, sampling using the same interface (tc), but with flower
classifier will not result in locally generated packets being sampled
given that such packets are not subject to the policy engine.

Third, realistically, this is not a big deal given that the vast
majority of the packets being transmitted through the port are not
locally generated packets.

Fourth, if such packets do need to be sampled, they can be sampled with
a 'skip_hw' filter and reported to the same sampling group as the data
path packets. The software sampling rate can also be adjusted to fit the
rate of the locally generated packets which is much lower than the rate
of the data path traffic.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:32:22 -07:00
Ido Schimmel
90f53c53ec mlxsw: spectrum: Start using sampling triggers hash table
Start using the previously introduced sampling triggers hash table to
store sampling parameters instead of storing them as attributes of the
sampled port.

This makes it easier to introduce new sampling triggers.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:32:22 -07:00
Ido Schimmel
1b9fc42e46 mlxsw: spectrum: Track sampling triggers in a hash table
Currently, mlxsw supports a single sampling trigger type (i.e., received
packet). When sampling is configured on an ingress port, the sampling
parameters (e.g., pointer to the psample group) are stored as an
attribute of the port, so that they could be passed to
psample_sample_packet() when a sampled packet is trapped to the CPU.

Subsequent patches are going to add more types of sampling triggers,
making it difficult to maintain the current scheme.

Instead, store all the active sampling triggers with their associated
parameters in a hash table. That way, more trigger types can be easily
added.

The next patch will flip mlxsw to use the hash table instead of the
current scheme.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:32:22 -07:00
Ido Schimmel
e09a59555a mlxsw: spectrum_matchall: Pass matchall entry to sampling operations
The entry will be required by the next patches, so pass it. No
functional changes intended.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:32:22 -07:00
Ido Schimmel
559313b2cb mlxsw: spectrum_matchall: Push sampling checks to per-ASIC operations
Push some sampling checks to the per-ASIC operations, as they are no
longer relevant for all ASICs.

The sampling rate validation against the MPSC maximum rate is only
relevant for Spectrum-1, as Spectrum-2 and later ASICs no longer use
MPSC register for sampling.

The ingress / egress validation is pushed down to the per-ASIC
operations since subsequent patches are going to remove it for
Spectrum-2 and later ASICs.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:32:22 -07:00
Ido Schimmel
6561df5608 mlxsw: spectrum_matchall: Propagate extack further
Due to the differences between Spectrum-1 and later ASICs, some of the
checks currently performed at the common code (where extack is
available) will need to be pushed to the per-ASIC operations.

As a preparation, propagate extack further to maintain proper error
reporting.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:32:22 -07:00
David S. Miller
5bdbdb823f Merge branch 'dpaa2-switch-small-cleanup'
Ioana Ciornei says:

====================
dpaa2-switch: small cleanup

This patch set addresses various low-hanging issues in both dpaa2-switch
and dpaa2-eth drivers.
Unused ABI functions are removed from dpaa2-switch, all the kernel-doc
warnings are fixed up in both drivers and the coding style for the
remaining ABIs is fixed-up a bit.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:29:49 -07:00
Ioana Ciornei
4fe72de61e dpaa2-eth: fixup kdoc warnings
Running kernel-doc over the dpaa2-eth driver generates a bunch of
warnings. Fix them up by removing code comments for macros which are
self-explanatory, respecting the kdoc format for macro documentation and
other small changes like describing the expected return values of
functions.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:29:49 -07:00
Ioana Ciornei
5ac2d25438 dpaa2-switch: fit the function declaration on the same line
Multiple ABI function declarations are split unnecessarry on multiple
lines. Fix this so that we have a consistent coding style.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 15:29:49 -07:00