144 Commits

Author SHA1 Message Date
Linus Torvalds
43d86ee8c6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
 "Several fixes here. Basically split down the line between newly
  introduced regressions and long existing problems:

   1) Double free in tipc_enable_bearer(), from Cong Wang.

   2) Many fixes to nf_conncount, from Florian Westphal.

   3) op->get_regs_len() can throw an error, check it, from Yunsheng
      Lin.

   4) Need to use GFP_ATOMIC in *_add_hash_mac_address() of fsl/fman
      driver, from Scott Wood.

   5) Inifnite loop in fib_empty_table(), from Yue Haibing.

   6) Use after free in ax25_fillin_cb(), from Cong Wang.

   7) Fix socket locking in nr_find_socket(), also from Cong Wang.

   8) Fix WoL wakeup enable in r8169, from Heiner Kallweit.

   9) On 32-bit sock->sk_stamp is not thread-safe, from Deepa Dinamani.

  10) Fix ptr_ring wrap during queue swap, from Cong Wang.

  11) Missing shutdown callback in hinic driver, from Xue Chaojing.

  12) Need to return NULL on error from ip6_neigh_lookup(), from Stefano
      Brivio.

  13) BPF out of bounds speculation fixes from Daniel Borkmann"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (57 commits)
  ipv6: Consider sk_bound_dev_if when binding a socket to an address
  ipv6: Fix dump of specific table with strict checking
  bpf: add various test cases to selftests
  bpf: prevent out of bounds speculation on pointer arithmetic
  bpf: fix check_map_access smin_value test when pointer contains offset
  bpf: restrict unknown scalars of mixed signed bounds for unprivileged
  bpf: restrict stack pointer arithmetic for unprivileged
  bpf: restrict map value pointer arithmetic for unprivileged
  bpf: enable access to ax register also from verifier rewrite
  bpf: move tmp variable into ax register in interpreter
  bpf: move {prev_,}insn_idx into verifier env
  isdn: fix kernel-infoleak in capi_unlocked_ioctl
  ipv6: route: Fix return value of ip6_neigh_lookup() on neigh_create() error
  net/hamradio/6pack: use mod_timer() to rearm timers
  net-next/hinic:add shutdown callback
  net: hns3: call hns3_nic_net_open() while doing HNAE3_UP_CLIENT
  ip: validate header length on virtual device xmit
  tap: call skb_probe_transport_header after setting skb->dev
  ptr_ring: wrap back ->producer in __ptr_ring_swap_queue()
  net: rds: remove unnecessary NULL check
  ...
2019-01-03 12:53:47 -08:00
Kangjie Lu
92ee77d148 net: marvell: fix a missing check of acpi_match_device
When acpi_match_device fails, its return value is NULL. Directly using
the return value without a check may result in a NULL-pointer
dereference. The fix checks if acpi_match_device fails, and if so,
returns -EINVAL.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-27 16:26:55 -08:00
Greg Kroah-Hartman
cd6a22310e Merge USB 4.20-rc8 mergepoint into usb-next
We need the USB changes in here for additional patches to be able to
apply cleanly.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-12-21 16:46:08 +01:00
Antoine Tenart
1b451fb205 net: mvpp2: fix the phylink mode validation
The mvpp2_phylink_validate() sets all modes that are supported by a
given PPv2 port. An mistake made the 10000baseT_Full mode being
advertised in some cases when a port wasn't configured to perform at
10G. This patch fixes this.

Fixes: d97c9f4ab000 ("net: mvpp2: 1000baseX support")
Reported-by: Russell King <linux@armlinux.org.uk>
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-19 16:38:35 -08:00
Antoine Tenart
0067917720 net: mvpp2: 10G modes aren't supported on all ports
The mvpp2_phylink_validate() function sets all modes that are
supported by a given PPv2 port. A recent change made all ports to
advertise they support 10G modes in certain cases. This is not true,
as only the port #0 can do so. This patch fixes it.

Fixes: 01b3fd5ac97c ("net: mvpp2: fix detection of 10G SFP modules")
Cc: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-18 14:48:15 -08:00
Greg Kroah-Hartman
ed0a773bff phy: for 4.21
*) Change phy set_mode ops to take both mode and setmode as arguments
  *) Add phy_configure() and phy_validate() API's mostly used for MIPI D-PHY
  *) Add helpers to get default values of parameters define in MIPI D-PHY spec
  *) Add driver for TI's CPSW Port PHY Interface Mode selection
  *) Add driver for Cadence Sierra PHY used with USB and PCIe
  *) Add driver for Freescale i.MX8MQ USB3 PHY
  *) Fixes QMP PHY bindings to allow the clocks provided by the PHY to be
     pointed at in device tree
  *) Fix for using fully specified regions (in device tree) for configuring
     the second lane in dual lane PHYs in QMP PHY
  *) Add support for Allwinner H6 USB2 PHY in phy-sun4i-usb driver
  *) Update phy-rcar-gen3-usb driver to follow the hardware manual
  *) Add support for fine grained power management in mapphone-mdm6600 driver
 
 Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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Merge tag 'phy-for-4.21_v1' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-next

Kishon writes:

phy: for 4.21

 *) Change phy set_mode ops to take both mode and setmode as arguments
 *) Add phy_configure() and phy_validate() API's mostly used for MIPI D-PHY
 *) Add helpers to get default values of parameters define in MIPI D-PHY spec
 *) Add driver for TI's CPSW Port PHY Interface Mode selection
 *) Add driver for Cadence Sierra PHY used with USB and PCIe
 *) Add driver for Freescale i.MX8MQ USB3 PHY
 *) Fixes QMP PHY bindings to allow the clocks provided by the PHY to be
    pointed at in device tree
 *) Fix for using fully specified regions (in device tree) for configuring
    the second lane in dual lane PHYs in QMP PHY
 *) Add support for Allwinner H6 USB2 PHY in phy-sun4i-usb driver
 *) Update phy-rcar-gen3-usb driver to follow the hardware manual
 *) Add support for fine grained power management in mapphone-mdm6600 driver

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

* tag 'phy-for-4.21_v1' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy: (30 commits)
  phy: qcom-qmp: Expose provided clocks to DT
  dt-bindings: phy-qcom-qmp: Move #clock-cells to child
  phy: qcom-qmp: Utilize fully-specified DT registers
  dt-bindings: phy-qcom-qmp: Fix register underspecification
  phy: ti: fix semicolon.cocci warnings
  phy: dphy: Add configuration helpers
  phy: Add MIPI D-PHY configuration options
  phy: Add configuration interface
  phy: Add MIPI D-PHY mode
  phy: add driver for Freescale i.MX8MQ USB3 PHY
  dt-bindings: phy: add binding for Freescale i.MX8MQ USB3 PHY
  phy: Use of_node_name_eq for node name comparisons
  net: ethernet: ti: cpsw: add support for port interface mode selection phy
  dt-bindings: net: ti: cpsw: switch to use phy-gmii-sel phy
  phy: ti: introduce phy-gmii-sel driver
  dt-bindings: phy: add cpsw port interface mode selection phy bindings
  phy: mvebu-cp110-comphy: fix spelling in structure name
  phy: mapphone-mdm6600: Improve phy related runtime PM calls
  phy: renesas: rcar-gen3-usb2: follow the hardware manual procedure
  phy: cadence: Add driver for Sierra PHY
  ...
2018-12-12 09:26:04 +01:00
Grygorii Strashko
cccc43b853 phy: mvebu-cp110-comphy: convert to use eth phy mode and submode
Convert mvebu-cp110-comphy PHY driver to use recently introduced
PHY_MODE_ETHERNET and phy_set_mode_ext().

Cc: Russell King - ARM Linux <linux@armlinux.org.uk>
Cc: Maxime Chevallier <maxime.chevallier@bootlin.com>
Cc: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2018-12-12 10:01:35 +05:30
Baruch Siach
0fb628f0f2 net: mvpp2: fix phylink handling of invalid PHY modes
The .validate phylink callback should empty the supported bitmap when
the interface mode is invalid.

Cc: Maxime Chevallier <maxime.chevallier@bootlin.com>
Cc: Antoine Tenart <antoine.tenart@bootlin.com>
Reported-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-04 21:17:15 -08:00
Baruch Siach
01b3fd5ac9 net: mvpp2: fix detection of 10G SFP modules
The mvpp2_phylink_validate() relies on the interface field of
phylink_link_state to determine valid link modes. However, when called
from phylink_sfp_module_insert() this field in not initialized. The
default switch case then excludes 10G link modes. This allows 10G SFP
modules that are detected correctly to be configured at max rate of
2.5G.

Catch the uninitialized PHY mode case, and allow 10G rates.

Fixes: d97c9f4ab000b ("net: mvpp2: 1000baseX support")
Cc: Maxime Chevallier <maxime.chevallier@bootlin.com>
Cc: Antoine Tenart <antoine.tenart@bootlin.com>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-04 21:17:15 -08:00
Marc Zyngier
a6b3a3fa04 net: mvpp2: Fix affinity hint allocation
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>
2018-10-30 11:34:41 -07:00
David S. Miller
72438f8cef Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-10-06 14:43:42 -07:00
Maxime Chevallier
35f3625c21 net: mvpp2: Extract the correct ethtype from the skb for tx csum offload
When offloading the L3 and L4 csum computation on TX, we need to extract
the l3_proto from the ethtype, independently of the presence of a vlan
tag.

The actual driver uses skb->protocol as-is, resulting in packets with
the wrong L4 checksum being sent when there's a vlan tag in the packet
header and checksum offloading is enabled.

This commit makes use of vlan_protocol_get() to get the correct ethtype
regardless the presence of a vlan tag.

Fixes: 3f518509dedc ("ethernet: Add new driver for Marvell Armada 375 network unit")
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-05 14:52:43 -07:00
David S. Miller
a06ee256e5 Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net
Version bump conflict in batman-adv, take what's in net-next.

iavf conflict, adjustment of netdev_ops in net-next conflicting
with poll controller method removal in net.

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-25 10:35:29 -07:00
Maxime Chevallier
4251ea5b8e net: mvpp2: use round-robin scheduling for TX queues on the same CPU
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>
2018-09-24 10:01:10 -07:00
Maxime Chevallier
0d283ab5b4 net: mvpp2: support XPS by mapping TX queues to CPUs
Since the PPv2 controller has multiple TX queues, we can spread traffic
by assining TX queues to CPUs, allowing to use XPS to balance egress
traffic between CPUs.

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>
2018-09-24 10:01:10 -07:00
YueHaibing
f03508ce3f net: marvell: fix return type of ndo_start_xmit function
The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, so make sure the implementation in
this driver has returns 'netdev_tx_t' value, and change the function
return type to netdev_tx_t.

Found by coccinelle.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-19 21:17:58 -07:00
Antoine Tenart
f8f5f588bb net: mvpp2: do not explicitly set the carrier state in open
This patch removes the explicit call to netif_carrier_off() in PPv2's
open() path, as this is now handled in phylink_start().

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-19 21:15:02 -07:00
Antoine Tenart
1068549c2a net: mvpp2: rename mvpp2_percpu function to mvpp2_thread
As the mvpp2_percpu_read/write/... functions aren't really per-cpu but
per s/w thread, rename them to include 'thread' instead of 'percpu'.
This is a cosmetic patch.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-19 21:09:54 -07:00
Antoine Tenart
e531f76757 net: mvpp2: handle cases where more CPUs are available than s/w threads
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>
2018-09-19 21:09:54 -07:00
Antoine Tenart
074c74dfcb net: mvpp2: map the CPUs to threads
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>
2018-09-19 21:09:54 -07:00
Antoine Tenart
543ec376e3 net: mvpp2: do not use the CPU number to access the per-thread registers
This patch reworks the Marvell PPv2 driver to stop using directly the
CPU number to access per-thread registers.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-19 21:09:54 -07:00
Antoine Tenart
1627442721 net: mvpp2: make mvpp2_read_relaxed static
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>
2018-09-19 21:09:54 -07:00
Antoine Tenart
ecfed8d9b3 net: mvpp2: make the per-cpu helpers static
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>
2018-09-19 21:09:54 -07:00
Antoine Tenart
850623b382 net: mvpp2: cpu should always be unsigned
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>
2018-09-19 21:09:54 -07:00
Antoine Tenart
70afb58e98 net: mvpp2: fix the number of queues per cpu for PPv2.2
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>
2018-09-19 21:09:54 -07:00
Antoine Tenart
fd4a105688 net: mvpp2: do not update the queue mode while probing
This patch updates the probing function so that the queue mode isn't
updated while probing, as the driver would silently end up using a
configuration not wanted by the user. The patch adds an extra check to
validate the chosen queue mode instead, and the driver will fail to
probe if the configuration is invalid.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-19 21:09:54 -07:00
Antoine Tenart
a9aac38599 net: mvpp2: rename the IRQs to match the hardware
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>
2018-09-19 21:09:53 -07:00
Antoine Tenart
774268f3e5 net: mvpp2: fix a txq_done race condition
When no Tx IRQ is available, the txq_done() routine (called from
tx_done()) shouldn't be called from the polling function, as in such
case it is already called in the Tx path thanks to an hrtimer. This
mostly occurred when using PPv2.1, as the engine then do not have Tx
IRQs.

Fixes: edc660fa09e2 ("net: mvpp2: replace TX coalescing interrupts with hrtimer")
Reported-by: Stefan Chulski <stefanc@marvell.com>
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-18 20:13:27 -07:00
Antoine Tenart
41948ccb4a net: mvpp2: let phylink manage the carrier state
Net drivers using phylink shouldn't mess with the link carrier
themselves and should let phylink manage it. The mvpp2 driver wasn't
following this best practice as the mac_config() function made calls to
change the link carrier state. This led to wrongly reported carrier link
state which then triggered other issues. This patch fixes this
behaviour.

But the PPv2 driver relied on this misbehaviour in two cases: for fixed
links and when not using phylink (ACPI mode). The later was fixed by
adding an explicit call to link_up(), which when the ACPI mode will use
phylink should be removed.

The fixed link case was relying on the mac_config() function to set the
link up, as we found an issue in phylink_start() which assumes the
carrier is off. If not, the link_up() function is never called. To fix
this, a call to netif_carrier_off() is added just before phylink_start()
so that we do not introduce a regression in the driver.

Fixes: 4bb043262878 ("net: mvpp2: phylink support")
Reported-by: Russell King <linux@armlinux.org.uk>
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-17 07:52:32 -07:00
Baruch Siach
c4053ef322 net: mvpp2: initialize port of_node pointer
Without a valid of_node in struct device we can't find the mvpp2 port
device by its DT node. Specifically, this breaks
of_find_net_device_by_node().

For example, the Armada 8040 based Clearfog GT-8K uses Marvell 88E6141
switch connected to the &cp1_eth2 port:

&cp1_mdio {
	...

	switch0: switch0@4 {
		compatible = "marvell,mv88e6085";
		...

		ports {
			...

			port@5 {
				reg = <5>;
				label = "cpu";
				ethernet = <&cp1_eth2>;
			};
		};
	};
};

Without this patch, dsa_register_switch() returns -EPROBE_DEFER because
of_find_net_device_by_node() can't find the device_node of the &cp1_eth2
device.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-29 22:09:01 -07:00
Maxime Chevallier
21da57a231 net: mvpp2: add a debugfs interface for the Header Parser
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>
2018-07-16 00:10:00 -07:00
Antoine Tenart
f1e37e3101 net: mvpp2: switch to SPDX identifiers
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>
2018-07-16 00:10:00 -07:00
Maxime Chevallier
436d4fdb20 net: mvpp2: allow setting RSS flow hash parameters with ethtool
This commit allows setting the RSS hash generation parameters from
ethtool. When setting parameters for a given flow type from ethtool
(e.g. tcp4), all the corresponding flows in the flow table are updated,
according to the supported hash parameters.

For example, when configuring TCP over IPv4 hash parameters to be
src/dst IP  + src/dst port ("ethtool -N eth0 rx-flow-hash tcp4 sdfn"),
we only set the "src/dst port" hash parameters on the non-fragmented TCP
over IPv4 flows.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-12 17:30:49 -07:00
Maxime Chevallier
d33ec45250 net: mvpp2: add an RSS classification step for each flow
One of the classification action that can be performed is to compute a
hash of the packet header based on some header fields, and lookup a RSS
table based on this hash to determine the final RxQ.

This is done by adding one lookup entry per flow per port, so that we
can configure the hash generation parameters for each flow and each
port.

There are 2 possible engines that can be used for RSS hash generation :

 - C3HA, that generates a hash based on up to 4 header-extracted fields
 - C3HB, that does the same as c3HA, but also includes L4 info in the hash

There are a lot of fields that can be extracted from the header. For now,
we only use the ones that we can configure using ethtool :
 - DST MAC address
 - L3 info
 - Source IP
 - Destination IP
 - Source port
 - Destination port

The C3HB engine is selected when we use L4 fields (src/dst port).

               Header parser          Dec table
 Ingress pkt  +-------------+ flow id +----------------------------+
------------->| TCAM + SRAM |-------->|TCP IPv4 w/ VLAN, not frag  |
              +-------------+         |TCP IPv4 w/o VLAN, not frag |
                                      |TCP IPv4 w/ VLAN, frag      |--+
                                      |etc.                        |  |
                                      +----------------------------+  |
                                                                      |
                                            Flow table                |
  +---------+   +------------+         +--------------------------+   |
  | RSS tbl |<--| Classifier |<--------| flow 0: C2 lookup        |   |
  +---------+   +------------+         |         C3 lookup port 0 |   |
                 |         |           |         C3 lookup port 1 |   |
         +-----------+ +-------------+ |         ...              |   |
         | C2 engine | | C3H engines | | flow 1: C2 lookup        |<--+
         +-----------+ +-------------+ |         C3 lookup port 0 |
                                       |         ...              |
                                       | ...                      |
                                       | flow 51 : C2 lookup      |
                                       |           ...            |
                                       +--------------------------+

The C2 engine also gains the role of enabling and disabling the RSS
table lookup for this packet.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-12 17:30:49 -07:00
Maxime Chevallier
e6e21c0242 net: mvpp2: rename per-port RSS init function
mvpp22_init_rss function configures the RSS parameters for each port, so
rename it accordingly. Since this function relies on classifier
configuration, move its call right after the classifier config.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-12 17:30:48 -07:00
Antoine Tenart
8179642b52 net: mvpp2: RSS indirection table support
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>
2018-07-12 17:30:48 -07:00
Maxime Chevallier
790d32c6d3 net: mvpp2: fix hardcoded number of rx queues
There's a dedicated #define that indicates the number of rx queues per
port per cpu, this commit removes a harcoded use of that value

This doesn't fix any runtime bugs since the harcoded value matches the
expected value.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-12 17:30:48 -07:00
Yan Markman
4c4a5686c4 net: mvpp2: use RSS only when using multi-queue mode
Since RSS only applies when we have per-cpu rx queues, it should only
be enabled when the driver is configured to make use of multi-queue
mode.

Signed-off-by: Yan Markman <ymarkman@marvell.com>
[Maxime: Commit message]
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-12 17:30:48 -07:00
Maxime Chevallier
3f6aaf7289 net: mvpp2: make multi queue mode the default mode
The multi queue mode is needed to have RSS available, and offers some
nice advantages, being able to have one rx queue vector per CPU.

This mode has been usable through the use of a module parameter, this
commit makes it the default value.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-12 17:30:48 -07:00
Maxime Chevallier
1e27a628e3 net: mvpp2: make sure we use single queue mode on PPv2.1
The PPv2 driver defines 2 "queue_modes" :
 - QDIST_SINGLE_MODE, where each port share one rx queue vector
   between all CPUs
 - QDIST_MULTI_MODE, where each port has one rx queue vector per CPU.

Multi queue mode isn't available on PPv2.1, make sure we fallback to
single mode when running on this revision.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-12 17:30:48 -07:00
Maxime Chevallier
dc734dbe99 net: mvpp2: Use htons when checking protocol info
When checking the skb->protocol field, we have to make sure we use the
proper endianness using htons, and not swab16.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-30 18:54:09 +09:00
Maxime Chevallier
7b9c7d7dc5 net: mvpp2: Make TX / RX descriptors little-endian
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>
2018-06-30 18:54:09 +09:00
kbuild test robot
fe083b3f06 net: mvpp2: mvpp2_percpu_read_relaxed() can be static
Fixes: db9d7d36eecc ("net: mvpp2: Split the PPv2 driver to a dedicated directory")
Signed-off-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-04 11:36:29 -04:00
Maxime Chevallier
db9d7d36ee net: mvpp2: Split the PPv2 driver to a dedicated directory
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>
2018-06-01 11:29:35 -04:00