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Every mvpp2 unit can use up to 8 buffers mapped by the BM (the HW buffer
manager). The HW will place the frames in the buffer pool depending on the
frame size: short (< 128 bytes), long (< 1664) or jumbo (up to 9856).
As any unit can have up to 4 ports, the driver allocates only 2 pools,
one for small and one long frames, and share them between ports.
When the first port MTU is set higher than 1664 bytes, a third pool is
allocated for jumbo frames.
This shared allocation makes impossible to use percpu allocators,
and creates contention between HW queues.
If possible, i.e. if the number of possible CPU are less than 8 and jumbo
frames are not used, switch to a new scheme: allocate 8 per-cpu pools for
short and long frames and bind every pool to an RXQ.
When the first port MTU is set higher than 1664 bytes, the allocation
scheme is reverted to the old behaviour (3 shared pools), and when all
ports MTU are lowered, the per-cpu buffers are allocated again.
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The tx_done_tasklet tasklet is used in invoke the hrtimer
(mvpp2_hr_timer_cb) in softirq context. This can be also achieved without
the tasklet but with HRTIMER_MODE_SOFT as hrtimer mode.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Besides the MIB counters, some other useful counters can be exposed to
the user. This commit adds support for :
- Per-port counters, that indicate FIFO drops and classifier drops,
- Per-rxq counters,
- Per-txq counters
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The phylink_config structure will encapsulate a pointer to a struct
device and the operation type requested for this instance of PHYLINK.
This patch does not make any functional changes, it just transitions the
PHYLINK internals and all its users to the new API.
A pointer to a phylink_config structure will be passed to
phylink_create() instead of the net_device directly. Also, the same
phylink_config pointer will be passed back to all phylink_mac_ops
callbacks instead of the net_device. Using this mechanism, a PHYLINK
user can get the original net_device using a structure such as
'to_net_dev(config->dev)' or directly the structure containing the
phylink_config using a container_of call.
At the moment, only the PHYLINK_NETDEV is defined as a valid operation
type for PHYLINK. In this mode, a valid reference to a struct device
linked to the original net_device should be passed to PHYLINK through
the phylink_config structure.
This API changes is mainly driven by the necessity of adding a new
operation type in PHYLINK that disconnects the phy_device from the
net_device and also works when the net_device is lacking.
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The PPv2 controller has 8 RSS tables that are shared across all ports on
a given PPv2 instance. The previous implementation allocated one table
per port, leaving others unused.
By using RSS contexts, we can make use of multiple RSS tables per
port, one being the default table (always id 0), the other ones being
used as destinations for flow steering, in the same way as rx rings.
This commit introduces RSS contexts management in the PPv2 driver. We
always reserve one table per port, allocated when the port is probed.
The global table list is stored in the struct mvpp2, as it's a global
resource. Each port then maintains a list of indices in that global
table, that way each port can have it's own numbering scheme starting
from 0.
One limitation that seems unavoidable is that the hashing parameters are
shared across all RSS contexts for a given port. Hashing parameters for
ctx 0 will be applied to all contexts.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The C2 TCAM has internal FIFOs that are only useful for the built-in
self-tests. Disable these FIFOS at init, as recommended in the
functionnal specs.
Suggested-by: Alan Winkowski <walan@marvell.com>
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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As of today, the classification offload implementation only supports 4
different rules to be offloaded. This number has been hardcoded in the
rule insertion function, and the wrong define is being used elsewhere.
Use the correct #define everywhere to make sure we always check for the
correct number of rules.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This commit introduces support for the "Drop" action in classification
offload. This corresponds to the "-1" action with ethtool -N.
This is achieved using the color marking actions available in the C2
engine, which associate a color to a packet. These colors can be either
Green, Yellow or Red, Red meaning that the packet should be dropped.
Green and Yellow colors are interpreted by the Policer, which isn't
supported yet.
This method of dropping using the Classifier is different than the
already existing early-drop features, such as VLAN filtering and MAC
UC/MC filtering, which are performed during the Parsing step, and
therefore take precedence over classification actions.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This commit introduces basic classification offloading support for the
PPv2 controller.
The PPv2 classifier has many classification engines, for now we only use
the C2 TCAM match engine.
This engine allows to perform ternary lookups on 64 bits keys (called
Header Extracted Key), that are built by extracting fields from the packet
header and concatenating them. At most 4 fields can be extracted for a
single lookup.
This basic implementation allows to build the HEK from the following
fields :
- L4 source and destination ports (for UDP and TCP)
More fields are to be added in the future.
Classification flows are added through the ethtool interface, using the
newly introduced flow_rule infrastructure as an internal rule
representation, allowing to more easily implement tc flower rules if
need be.
The internal design for now allocates one range of 4 rules per port
due to the internal design of the flow table, which uses 22 sub-flows.
When inserting a classification rule, the rule is created in every
relevant sub-flow.
This low rule-count is a very simple design which reaches quickly the
limitations of the flow table ordering, but guarantees that the rule
ordering will always be respected.
This commit only introduces support for the "steer to rxq" action.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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C2 TCAM entries can be invalidated to avoid unwanted matches. Make sure
all entries are invalidated at init, then validate only the ones we use.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The current way to store the required private data needed to access
various debugfs entries is to alloc them on the fly, share them within
the entries that need to access them, and finally have one entry free
that data upon closing. This leads to hard to maintain code, and is very
error-prone.
This commit stores all debugfs related data in the same place, making
sure this is allocated only when the debugfs directory is successfully
created, so that we don't waste memory when we don't use this feature.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The macro definition MVPP2_N_FLOWS is ambiguous because it really
represents the number of entries in the Header Parser that are used to
identify the classification flows.
Rename the macro to clearly state that we represent the number of flows
in the Header Parser.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The PPv2 classifier allows to perform multiple lookups on the same
engine when classifying a packet. These lookups can match similar parts
of a packet header, but perform different actions upon matching. To
differentiate these types of lookups, it's possible to specify a Lookup
Type in the flow table entries, which will be part of the key for the
lookup engines.
This commit introduces the use of Lookup Types for C2 matches. Since for
now we only perform C2 lookups to enable RSS, we only need one Lookup
Type.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch sets both the XPCS and MPCS blocks in reset when they aren't
used. This is done both at boot time and when reconfiguring a port mode.
The advantage now is that only the PCS used is set out of reset when the
port is configured (10GKR uses the MCPS while RXAUI uses the XPCS).
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch force the XLG MAC link state in the phylink link_up() and
link_down() helpers when not using in-band auto-negotiation. This mimics
what's already done for the GMAC and follows what's advised in the
phylink documentation.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The patch fixes the computation of RXQs being used by the PPv2 driver,
which is set depending on the PPv2 engine version and the queue mode
used. There are three cases:
- PPv2.1: 1 RXQ per CPU.
- PPV2.2 with MVPP2_QDIST_MULTI_MODE: 1 RXQ per CPU.
- PPv2.2 with MVPP2_QDIST_SINGLE_MODE: 1 RXQ is shared between the CPUs.
The PPv2 engine supports a maximum of 32 queues per port. This patch
adds a check so that we do not overstep this maximum.
It appeared the calculation was broken for PPv2.1 engines since
f8c6ba8424b0, as PPv2.1 ports ended up with a single RXQ while they
needed 4. This patch fixes it.
Fixes: f8c6ba8424b0 ("net: mvpp2: use only one rx queue per port per CPU")
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Cosmetic patch fix the alignment of the MVPP2_GMAC_CONFIG_MII_SPEED
macro definition.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The Marvell PPv2 port structure stores the GoP id of a given port. This
information is specific to PPv2.2, but cannot be used by PPv2.1. Update
its comment to denote this specificity.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This cosmetic patch fixes a typo made in a comment in the Marvell PPv2
Ethernet driver header.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When reading the pause bits in mac_link_state, mvpp2 was reporting
the state of the "active pause" bits, which are set when the MAC is
in pause mode. This is not what phylink wants - we want the
negotiated pause state. Fix the definition so we read the correct
bits.
Tested-by: Sven Auhagen <sven.auhagen@voleatech.de>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The mvpp2 driver has the curious behaviour of passing a stack variable
to irq_set_affinity_hint(), which results in the kernel exploding
the first time anyone accesses this information. News flash: userspace
does, and irqbalance will happily take the machine down. Great stuff.
An easy fix is to track the mask within the queue_vector structure,
and to make sure it has the same lifetime as the interrupt itself.
Fixes: e531f76757eb ("net: mvpp2: handle cases where more CPUs are available than s/w threads")
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This commit allows each TXQ to be picked in a round-robin fashion by
the PPv2 transmit scheduling mechanism. This is opposed to the default
behaviour that prioritizes the highest numbered queues.
Suggested-by: Yan Markman <ymarkman@marvell.com>
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The Marvell PPv2 network controller has 9 internal threads. The driver
works fine when there are less CPUs available than threads. This isn't
true if more CPUs are available. As this is a valid use case, handle
this particular case.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch maps all uses of the CPU to threads. All this_cpu calls are
replaced, and all smp_processor_id() calls are wrapped into the
indirection.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In the Marvell PPv2 driver the mvpp2_read_relaxed function is only used
in a single file. Make it static and remove its prototype from the
header.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The Marvell PPv2 driver has per-cpu functions. As they only are used in
the main file, make them static and remove their prototype from the
header.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Updates the PPv2 driver so that all CPU variables are unsigned, as it
makes no sense to have a negative CPU number. This patch is cosmetic.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The Marvell PPv2.2 engine only has 8 Rx queues per CPU, while PPv2.1 has
16 of them. This patch updates the code so that the Rx queues mask width
is selected given the version of the network controller used.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch renames the IRQs in the Marvell PPv2 driver as their current
names match the way they are used in software. But this will change in
the future, and those IRQs have nothing to do with Rx/Tx interrupts
(this can be configured). The new binding also describe more interrupts
as some where left out.
The old binding support is kept for backward compatibility.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch sets the number of s/w threads to 9, its maximum value,
instead of 8. This is not a fix as only 4 of the s/w threads were used
so far, but more could be used in the future.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The classification operations that are used for RSS make use of several
lookup tables. Having hit counters for these tables is really helpful
to determine what flows were matched by ingress traffic, and see the
path of packets among all the classifier tables.
This commit adds hit counters for the 3 tables used at the moment :
- The decoding table (also called lookup_id table), that links flows
identified by the Header Parser to the flow table.
There's one entry per flow, located at :
.../mvpp2/<controller>/flows/XX/dec_hits
Note that there are 21 flows in the decoding table, whereas there are
52 flows in the Header Parser. That's because there are several kind
of traffic that will match a given flow. Reading the hit counter from
one sub-flow will clear all hit counter that have the same flow_id.
This also applies to the flow_hits.
- The flow table, that contains all the different lookups to be
performed by the classifier for each packet of a given flow. The match
is done on the first entry of the flow sequence.
- The C2 engine entries, that are used to assign the default rx queue,
and enable or disable RSS for a given port.
There's one entry per flow, located at:
.../mvpp2/<controller>/flows/XX/flow_hits
There is one C2 entry per port, so the c2 hit counter is located at :
.../mvpp2/<controller>/ethX/c2_hits
All hit counter values are 16-bits clear-on-read values.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The classifier configuration for RSS is quite complex, with several
lookup tables being used. This commit adds useful info in debugfs to
see how the different tables are configured :
Added 2 new entries in the per-port directory :
- .../eth0/default_rxq : The default rx queue on that port
- .../eth0/rss_enable : Indicates if RSS is enabled in the C2 entry
Added the 'flows' directory :
It contains one entry per sub-flow. a 'sub-flow' is a unique path from
Header Parser to the flow table. Multiple sub-flows can point to the
same 'flow' (each flow has an id from 8 to 29, which is its index in the
Lookup Id table) :
- .../flows/00/...
/01/...
...
/51/id : The flow id. There are 21 unique flows. There's one
flow per combination of the following parameters :
- L4 protocol (TCP, UDP, none)
- L3 protocol (IPv4, IPv6)
- L3 parameters (Fragmented or not)
- L2 parameters (Vlan tag presence or not)
.../type : The flow type. This is an even higher level flow,
that we manipulate with ethtool. It can be :
"udp4" "tcp4" "udp6" "tcp6" "ipv4" "ipv6" "other".
.../eth0/...
.../eth1/engine : The hash generation engine used for this
flow on the given port
.../hash_opts : The hash generation options indicating on
what data we base the hash (vlan tag, src
IP, src port, etc.)
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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One helpful feature to help debug the Header Parser TCAM filter in PPv2
is to be able to see if the entries did match something when a packet
comes in. This can be done by using the built-in hit counter for TCAM
entries.
This commit implements reading the counter, and exposing its value on
debugfs for each filter entry.
The counter is a 16-bits clear-on-read value, located at:
.../mvpp2/<controller>/parser/XXX/hits
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Marvell PPv2 Packer Header Parser has a TCAM based filter, that is not
trivial to configure and debug. Being able to dump TCAM entries from
userspace can be really helpful to help development of new features
and debug existing ones.
This commit adds a basic debugfs interface for the PPv2 driver, focusing
on TCAM related features.
<mnt>/mvpp2/ --- f2000000.ethernet
\- f4000000.ethernet --- parser --- 000 ...
| \- 001
| \- ...
| \- 255 --- ai
| \- header_data
| \- lookup_id
| \- sram
| \- valid
\- eth1 ...
\- eth2 --- mac_filter
\- parser_entries
\- vid_filter
There's one directory per PPv2 instance, named after pdev->name to make
sure names are uniques. In each of these directories, there's :
- one directory per interface on the controller, each containing :
- "mac_filter", which lists all filtered addresses for this port
(based on TCAM, not on the kernel's uc / mc lists)
- "parser_entries", which lists the indices of all valid TCAM
entries that have this port in their port map
- "vid_filter", which lists the vids allowed on this port, based on
TCAM
- one "parser" directory (the parser is common to all ports), containing :
- one directory per TCAM entry (256 of them, from 0 to 255), each
containing :
- "ai" : Contains the 1 byte Additional Info field from TCAM, and
- "header_data" : Contains the 8 bytes Header Data extracted from
the packet
- "lookup_id" : Contains the 4 bits LU_ID
- "sram" : contains the raw SRAM data, which is the result of the TCAM
lookup. This readonly at the moment.
- "valid" : Indicates if the entry is valid of not.
All entries are read-only, and everything is output in hex form.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Use the appropriate SPDX license identifiers and drop the license text.
This patch is only cosmetic.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The PPv2 Controller has a classifier, that can perform multiple lookup
operations for each packet, using different engines.
One of these engines is the C2 engine, which performs TCAM based lookups
on data extracted from the packet header. When a packet matches an
entry, the engine sets various attributes, used to perform
classification operations.
One of these attributes is the rx queue in which the packet should be sent.
The current code uses the lookup_id table (also called decoding table)
to assign the rx queue. However, this only works if we use one entry per
port in the decoding table, which won't be the case once we add RSS
lookups.
This patch uses the C2 engine to assign the rx queue to each packet.
The C2 engine is used through the flow table, which dictates what
classification operations are done for a given flow.
Right now, we have one flow per port, which contains every ingress
packet for this port.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds the RSS indirection table support, allowing to use the
ethtool -x and -X options to dump and set this table.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
[Maxime: Small warning fixes, use one table per port]
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is no RSS_TABLE register in PPv2 Controller. The register 0x1510
which was specified is actually named "RSS_HASH_SEL", but isn't used by
this driver at all.
Based on how this register was used, it should have been the
RXQ2RSS_TABLE register, which allows to select the RSS table that will
be used for the incoming packet.
The RSS_TABLE_POINTER is actually a field of this RXQ2RSS_TABLE
register.
Since RSS tables are actually not used by the driver for now, this
commit does not fix a runtime bug.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The number of receive queue per port is :
- MVPP2_DEFAULT_RXQ if in single queue mode
- MVPP2_DEFAULT_RXQ * num_possible_cpus if in multi queue mode
with MVPP2_DEFAULT_RXQ = 4.
However, we don't use the extra rx queues at the moment, we really only
need one per port per CPU, until some more advanced classification rules
are implemented.
Suggested-by: Stefan Chulski <stefanc@marvell.com>
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The size of the the RSS indirection tables should be defined in mvpp2.h,
so that we can use it in all files of the PPv2 driver.
This commit moves the define in mvpp2.h, and adds the missing #include
in mvpp2_cls.h.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The Marvell PPv2 driver uses interrupts and tasklet but does not
explicitly include linux/interrupt.h, relying on implicit includes. This
one particularly is included by chance after a long unlogical chain of
inclusions. Fix this so we do not get future build breaks.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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PPv2's Header Parser use some large TCAM and SRAM entries, that are
duplicated in software so that we can write them to hardware only when
we are done modifying them.
Currently, PPv2 uses a union containing arrays of u32 and u8 to represent
these entries, to facilitate byte per byte access. This representation is
broken when we want to support big endian, and this makes the code
confusing to read.
This patch drops the union, and simply stores the TCAM and SRAM entries
as u32 arrays, each entry corresponding to a 32-bit register.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The PPv2 controller always expect descriptors to be in little endian. We
must therefore force descriptors to use that format, and convert to the
host endianness when necessary.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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As the mvpp2 driver is growing, move this driver to a dedicated
directory and split it into several files.
Since this driver has a lot of register defines and structure
definitions, it can benefit from having all of this into a dedicated
header file, named mvpp2.h.
A good chunk of the mvpp2 code is dedicated to Header Parser handling, so
we introduce mvpp2_prs.h where all Header Parser definitions are located,
and mvpp2_prs.c containing the related code.
In the same way, mvpp2_cls.h and mvpp2_cls.c are created to contain
Classifier and RSS related code.
The former 'mvpp2.c' file is renamed 'mvpp2_main.c' so that we can keep
the driver binary named 'mvpp2'.
This commit is only about spliting the driver into multiple files and
doesn't introduce any new function, feature or fix besides removing
'static' keywords when needed.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Tested-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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