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Автор SHA1 Сообщение Дата
Grygorii Strashko c6213eb1ae net: ethernet: ti: cpsw-phy-sel: check bus_find_device() ret value
This fixes klockworks warnings: Pointer 'dev' returned from call to
function 'bus_find_device' at line 179 may be NULL and will be dereferenced
at line 181.

    cpsw-phy-sel.c:179: 'dev' is assigned the return value from function 'bus_find_device'.
    bus.c:342: 'bus_find_device' explicitly returns a NULL value.
    cpsw-phy-sel.c:181: 'dev' is dereferenced by passing argument 1 to function 'dev_get_drvdata'.
    device.h:1024: 'dev' is passed to function 'dev_get_drvdata'.
    device.h:1026: 'dev' is explicitly dereferenced.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
[nsekhar@ti.com: add an error message, fix return path]
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 14:13:13 -04:00
Debabrata Banerjee b3c898e20b Revert "bonding: allow carrier and link status to determine link state"
This reverts commit 1386c36b30.

We don't want to encourage drivers to not report carrier status
correctly, therefore remove this commit.

Signed-off-by: Debabrata Banerjee <dbanerje@akamai.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 14:03:50 -04:00
Roman Mashak 55df3e9754 tc-testing: updated mirred and vlan with more tests
Added extra test cases for different control actions (reclassify, pipe
etc.), cookies, max values & exceeding maximum, and replace existing
actions unit tests.

Signed-off-by: Roman Mashak <mrv@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 14:03:15 -04:00
Roman Mashak 2f42a12832 tc-testing: fixed copy-pasting error in police tests
Signed-off-by: Roman Mashak <mrv@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 13:27:32 -04:00
Paolo Abeni 32f7b44d0f sched: manipulate __QDISC_STATE_RUNNING in qdisc_run_* helpers
Currently NOLOCK qdiscs pay a measurable overhead to atomically
manipulate the __QDISC_STATE_RUNNING. Such bit is flipped twice per
packet in the uncontended scenario with packet rate below the
line rate: on packed dequeue and on the next, failing dequeue attempt.

This changeset moves the bit manipulation into the qdisc_run_{begin,end}
helpers, so that the bit is now flipped only once per packet, with
measurable performance improvement in the uncontended scenario.

This also allows simplifying the qdisc teardown code path - since
qdisc_is_running() is now effective for each qdisc type - and avoid a
possible race between qdisc_run() and dev_deactivate_many(), as now
the some_qdisc_is_busy() can properly detect NOLOCK qdiscs being busy
dequeuing packets.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 12:26:25 -04:00
David S. Miller 5a63f77af7 Merge branch 'bonding-performance-and-reliability'
Debabrata Banerjee says:

====================
bonding: performance and reliability

Series of fixes to how rlb updates are handled, code cleanup, allowing
higher performance tx hashing in balance-alb mode, and reliability of
link up/down monitoring.

v2: refactor bond_is_nondyn_tlb with inline fn, update log comment to
point out that multicast addresses will not get rlb updates.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 12:15:12 -04:00
Debabrata Banerjee 1386c36b30 bonding: allow carrier and link status to determine link state
In a mixed environment it may be difficult to tell if your hardware
support carrier, if it does not it can always report true. With a new
use_carrier option of 2, we can check both carrier and link status
sequentially, instead of one or the other

Signed-off-by: Debabrata Banerjee <dbanerje@akamai.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 12:15:11 -04:00
Debabrata Banerjee e79c105574 bonding: allow use of tx hashing in balance-alb
The rx load balancing provided by balance-alb is not mutually
exclusive with using hashing for tx selection, and should provide a decent
speed increase because this eliminates spinlocks and cache contention.

Signed-off-by: Debabrata Banerjee <dbanerje@akamai.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 12:15:11 -04:00
Debabrata Banerjee cbeeea70de bonding: use common mac addr checks
Replace homegrown mac addr checks with faster defs from etherdevice.h

Note that this will also prevent any rlb arp updates for multicast
addresses, however this should have been forbidden anyway.

Signed-off-by: Debabrata Banerjee <dbanerje@akamai.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 12:15:11 -04:00
Debabrata Banerjee 2578041011 bonding: don't queue up extraneous rlb updates
arps for incomplete entries can't be sent anyway.

Signed-off-by: Debabrata Banerjee <dbanerje@akamai.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 12:15:10 -04:00
David S. Miller 967c299384 Merge branch 'net-smc-enhancements-2018-05-15'
Ursula Braun says:

====================
net/smc: enhancements 2018/05/15

here are smc patches for net-next. The first one is a fix for net-next
commit 01d2f7e2cd "net/smc: sockopts TCP_NODELAY and TCP_CORK".
Patch 7 improves Connection Layer Control error handling, patch 10
improves abnormal termination of link groups. The remaining patches
from Karsten improve Link Layer Control code.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:49:20 -04:00
Karsten Graul 517c300e8f net/smc: check for pending termination
Avoid to run the processing in smc_lgr_terminate() more than once,
remember when the link group termination is triggered.

Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:49:20 -04:00
Karsten Graul 8f332a743c net/smc: drop messages when link state is inactive
Drop incoming messages when the link is flagged as inactive.

Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:49:20 -04:00
Karsten Graul 3cf52eb11f net/smc: set link inactive before calling smc_lgr_free()
Before smc_lgr_free() is called the link must be set inactive by calling
smc_llc_link_inactive().

Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:49:20 -04:00
Karsten Graul 1401ea045b net/smc: handle all error codes from smc_conn_create()
Always set a reason_code when smc_conn_create() returns an error code.

Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:49:19 -04:00
Karsten Graul 2a4c57a9e7 net/smc: use a workqueue to defer llc send
SMC handles deferred work in tasklets. As tasklets cannot sleep this
can result in rare EBUSY conditions, so defer this work in a work queue.
The high level api functions do not defer work because they can sleep
until the llc send is actually completed.

Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:49:19 -04:00
Karsten Graul b32cf4ab68 net/smc: move link llc initialization to llc layer
Move the llc layer specific initialization and cleanup out of smc_core.c
into smc_llc.c (smc_llc_link_init and smc_llc_link_clear). Move all
initialization of a link into the new init function.

Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:49:19 -04:00
Karsten Graul d97935faee net/smc: simplify test_link function usage
Make smc_llc_send_test_link() static and remove it from the header file.
And to send a test_link response set the response flag and send the
message back as-is, without using smc_llc_send_test_link(). And because
smc_llc_send_test_link() must no longer send responses, remove the
response flag handling from the function.

Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:49:19 -04:00
Karsten Graul 9fcdf8e983 net/smc: remove unnecessary cast
Remove an unneeded (void *) cast from the calls to
smc_llc_send_message(). No functional changes.

Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:49:19 -04:00
Karsten Graul 44aa81ce95 net/smc: register new rmbs with the peer
Register new rmb buffers with the remote peer by exchanging a
confirm_rkey llc message.

Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:49:19 -04:00
Ursula Braun 569bc64365 net/smc: no tx work trigger for fallback sockets
If TCP_NODELAY is set or TCP_CORK is reset, setsockopt triggers the
tx worker. This does not make sense, if the SMC socket switched to
the TCP fallback when the connection is created. This patch adds
the additional check for the fallback case.

Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:49:19 -04:00
David S. Miller 7d6541fba1 mlx5e-updates-2018-05-14
Misc update for mlx5e netdevice driver
 
 From Gal Pressman:
  - Remove MLX5E_TEST_BIT macros and use test_bit instead
  - Use __set_bit when possible
 
 From Eran Ben Elisha:
   - Improve debug print on initial RX posting timeout
 
 From Or Gerlitz:
  - Support offloaded TC flows with no matches on headers
  - mlx5e TC cleanups
 
 Trivial cleanups From Roi, Tariq and Saeed:
   - Use bool as return type for mlx5e_xdp_handle
   - Use u8 instead of int for LRO number of segments
   - Skip redundant checks when providing NUD lastuse feedback
   - Remove redundant vport context vlan update
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Merge tag 'mlx5e-updates-2018-05-14' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5e-updates-2018-05-14

Misc update for mlx5e netdevice driver

From Gal Pressman:
 - Remove MLX5E_TEST_BIT macros and use test_bit instead
 - Use __set_bit when possible

From Eran Ben Elisha:
  - Improve debug print on initial RX posting timeout

From Or Gerlitz:
 - Support offloaded TC flows with no matches on headers
 - mlx5e TC cleanups

Trivial cleanups From Roi, Tariq and Saeed:
  - Use bool as return type for mlx5e_xdp_handle
  - Use u8 instead of int for LRO number of segments
  - Skip redundant checks when providing NUD lastuse feedback
  - Remove redundant vport context vlan update
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:36:39 -04:00
David S. Miller 7ed19eb9ea Merge branch 'Misc-Bug-Fixes-and-clean-ups-for-HNS3-Driver'
Salil Mehta says:

====================
Misc. Bug Fixes and clean-ups for HNS3 Driver

This patch-set mainly introduces various bug fixes, cleanups and one
very small enhancement to existing HN3 driver code.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:33:09 -04:00
Fuyun Liang 6a814413eb net: hns3: Fixes the missing PCI iounmap for various legs
We call pcim_iomap in hclge_pci_init, pcim_iounmap should be called
in error handle of hclge_init_ae_dev.

We call pcim_iomap in hclge_pci_init, but do not call pcim_iounmap in
hclge_pci_uninit. When we remove the hclge.ko and insert it again, a
problem that pci can not map will happen. pcim_iounmap need to be called
in hclge_pci_uninit.

Fixes: 46a3df9f97 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support")
Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:33:08 -04:00
Peng Li fa8d82e853 net: hns3: Add support of .sriov_configure in HNS3 driver
As HNS3 driver will enable SRIOV default and enable all VFs the
HW support, if PF and VF driver compiled to kernel, VF driver
will work on host default, it is not right.

This patch adds support for hns3_driver.sriov_configure to support
user configs the VF_num, and do not enable sriov default.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Suggested-by: Zhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:33:08 -04:00
Yunsheng Lin be8d8cdb8e net: hns3: Fix for fiber link up problem
When hclge_ae_start is called, hdev->hw.mac.link may be set
to one after up/down multi-times, which does not correspond to
the link state of netdev when the netdev is up.

This fixes it by setting hdev->hw.mac.link to zero when
hclge_ae_start is called.

Fixes: 46a3df9f97 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support")
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:33:08 -04:00
Yunsheng Lin 67bf2541f4 net: hns3: Fixes the back pressure setting when sriov is enabled
When sriov is enabled, the Qset and tc mapping is not longer one
to one relation.

This patch fixes it by mapping all pf and vf's Qset to tc.

Fixes: 848440544b ("net: hns3: Add support of TX Scheduler & Shaper to HNS3 driver")
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:33:08 -04:00
Fuyun Liang 0c698257c7 net: hns3: Change return value in hnae3_register_client
A client includes many client instance. Just like ae_algo, Initializing
client instance failed does not represent registering client failed.
The action of registering client just is adding client to the client
list and the result always is true. This patch changes the return
value of hnae3_register_client form a variable value to a fixed value,
makes the function always return ok.

Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:33:08 -04:00
Fuyun Liang 854cf33a63 net: hns3: Change return type of hnae3_register_ae_algo
The ae_algo is used by many ae_devs. It is not only belong to just a
ae_dev. Initializing ae_dev failed does not represent registering ae_algo
failed. Because the action of registering ae_algo just is adding ae_algo
to the ae_algo list and it is always is true, it make no sense to define
return type as int.

This patch changes the return type of hnae3_register_ae_algo from int to
void.

Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:33:07 -04:00
Fuyun Liang 50fbc237b7 net: hns3: Change return type of hnae3_register_ae_dev
If hclge.ko has not been inserted, the value of ret always is zero
in hnae3_register_ae_dev. If hclge.ko has been inserted, the value
of ret is zero or non zero. Different execution ways have different
results. It is confusing.

The ae_dev which is initialized failed can be reinitialized when we
remove hclge.ko and insert it again. For the case initializing client
instance, it is just like the case initializing ae_dev. The main function
of hnae3_register_ae_dev is adding the ae_dev to ad_dev list. Because
adding ae_dev is always ok, we does not need to return any in this
function.

This patch changes the return type of hnae3_register_ae_dev from int
to void.

Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:33:07 -04:00
Fuyun Liang e3afa96365 net: hns3: Add a check for client instance init state
If the client instance is initializd failed, we do not need to uninit it.
This patch adds a state check to check init state of client instance.

Fixes: 38caee9d3e ("net: hns3: Add support of the HNAE3 framework")
Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:33:07 -04:00
Fuyun Liang 3e249d3bed net: hns3: Fix for the null pointer problem occurring when initializing ae_dev failed
When initializing ae_dev failed during loading hclge.ko, the drvdata will
be set to null. When removing hns3.ko, we get a null ae_dev. It causes the
null pointer problem.

This patch removes pci_set_drvdata from error handle of hclge_init_ae_dev
to fix the bug, since pci_set_drvdata has been called in hns3_remove.
Also, we do not need to uninit the ae_dev which is not initialized. And
it may be the one which is initialized failed.

Fixes: 46a3df9f97 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support")
Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:33:07 -04:00
Fuyun Liang 2312e050f4 net: hns3: Fix for deadlock problem occurring when unregistering ae_algo
When hnae3_unregister_ae_algo is called by PF, pci_disable_sriov is
called. And then, hns3_remove is called by VF. We get deadlocked in
this case.

Since VF pci device is dependent on PF pci device, When PF pci device
is removed, VF pci device must be removed. Also, To solve the deadlock
problem, VF pci device should be removed before PF pci device is removed.

This patch moves pci_enable/disable_sriov from hclge to hns3 to solve
the deadlock problem.

Also, we do not need to return EPROBE_DEFER in hnae3_register_ae_dev,
because SRIOV is no longer enabled in the context calling
hnae3_register_ae_dev. Mutex_trylock can be replaced with mutex_lock.

Fixes: 424eb834a9 ("net: hns3: Unified HNS3 {VF|PF} Ethernet Driver for hip08 SoC")
Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-16 11:33:07 -04:00
David S. Miller 0b7d997840 Merge branch 'Microsemi-Ocelot-Ethernet-switch-support'
Alexandre Belloni says:

====================
Microsemi Ocelot Ethernet switch support

This series adds initial support for the Microsemi Ethernet switch
present on Ocelot SoCs.

This only has bridging (and STP) support for now and it uses the
switchdev framework.
Coming features are VLAN filtering, link aggregation, IGMP snooping.

The switch can also be connected to an external CPU using PCIe.

Also, support for integration on other SoCs will be submitted.

The ocelot dts changes are here for reference and should probably go
through the MIPS tree once the bindings are accepted.

Changes in v3:
 - Collected Reviewed-by
 * Switchdev driver:
   - Fixed two issues reported by kbuild
   - Modified ethtool statistics to support different layoiut on different chips and take care of counter overflow

Changes in v2:
 - Dropped Microsemi Ocelot PHY support
 * MIIM driver:
   - Documented interrupts bindings
   - Moved the driver to drivers/net/phy/
   - Removed unused mutex
   - Removed MDIO bus scanning
 * Switchdev driver:
   - Changed compatible to mscc,vsc7514-switch
   - Removed unused header inclusion
   - Factorized MAC table selection in ocelot_mact_select()
   - Disable the port in ocelot_port_stop()
   - Fixed the smatch endianness warnings
   - int to unsinged int where necessary
   - Removed VID handling for the FDB it has been reworked anyway and will be
     submitted with VLAN support
   - Fixed up unused cases in ocelot_port_attr_set()
   - Added a loop to register all the IO register spaces
   - the ports are now in an ethernet-ports node

I've tried switching to NAPI but this is not working well, mainly because the
only way to disable interrupts is to actually mask them in the interrupt
controller (it is not possible to tell the switch to stop generating
interrupts).
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-15 16:41:16 -04:00
Alexandre Belloni 0ce60edd78 MAINTAINERS: Add entry for Microsemi Ethernet switches
Add myself as a maintainer for the Microsemi Ethernet switches.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-15 16:41:15 -04:00
Alexandre Belloni a556c76adc net: mscc: Add initial Ocelot switch support
Add a driver for Microsemi Ocelot Ethernet switch support.

This makes two modules:
mscc_ocelot_common handles all the common features that doesn't depend on
how the switch is integrated in the SoC. Currently, it handles offloading
bridging to the hardware. ocelot_io.c handles register accesses. This is
unfortunately needed because the register layout is packed and then depends
on the number of ports available on the switch. The register definition
files are automatically generated.

ocelot_board handles the switch integration on the SoC and on the board.

Frame injection and extraction to/from the CPU port is currently done using
register accesses which is quite slow. DMA is possible but the port is not
able to absorb the whole switch bandwidth.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-15 16:41:15 -04:00
Alexandre Belloni 44b801e0f0 dt-bindings: net: add DT bindings for Microsemi Ocelot Switch
DT bindings for the Ethernet switch found on Microsemi Ocelot platforms.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-15 16:41:15 -04:00
Alexandre Belloni 542671fe4d net: phy: mscc-miim: Add MDIO driver
Add a driver for the Microsemi MII Management controller (MIIM) found on
Microsemi SoCs.
On Ocelot, there are two controllers, one is connected to the internal
PHYs, the other one can communicate with external PHYs.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-15 16:41:15 -04:00
Alexandre Belloni cd1436a267 dt-bindings: net: add DT bindings for Microsemi MIIM
DT bindings for the Microsemi MII Management Controller found on Microsemi
SoCs

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-15 16:41:14 -04:00
David S. Miller 961423f9fc Merge branch 'sctp-Introduce-sctp_flush_ctx'
Marcelo Ricardo Leitner says:

====================
sctp: Introduce sctp_flush_ctx

This struct will hold all the context used during the outq flush, so we
don't have to pass lots of pointers all around.

Checked on x86_64, the compiler inlines all these functions and there is no
derreference added because of the struct.

This patchset depends on 'sctp: refactor sctp_outq_flush'

Changes since v1:
- updated to build on top of v2 of 'sctp: refactor sctp_outq_flush'

Changes since v2:
- fixed a rebase issue which reverted a change in patch 2.
- rebased on v3 of 'sctp: refactor sctp_outq_flush'
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-14 23:15:27 -04:00
Marcelo Ricardo Leitner 5884f35f0d sctp: checkpatch fixups
A collection of fixups from previous patches, left for later to not
introduce unnecessary changes while moving code around.

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-14 23:15:27 -04:00
Marcelo Ricardo Leitner e136e965df sctp: add asoc and packet to sctp_flush_ctx
Pre-compute these so the compiler won't reload them (due to
no-strict-aliasing).

Changes since v2:
- Do not replace a return with a break in sctp_outq_flush_data

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-14 23:15:27 -04:00
Marcelo Ricardo Leitner bb543847a9 sctp: add sctp_flush_ctx, a context struct on outq_flush routines
With this struct we avoid passing lots of variables around and taking care
of updating the current transport/packet.

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-14 23:15:27 -04:00
David S. Miller ab61990550 Merge branch 'sctp-refactor-sctp_outq_flush'
Marcelo Ricardo Leitner says:

====================
sctp: refactor sctp_outq_flush

Currently sctp_outq_flush does many different things and arguably
unrelated, such as doing transport selection and outq dequeueing.

This patchset refactors it into smaller and more dedicated functions.
The end behavior should be the same.

The next patchset will rework the function parameters.

Changes since v1:
- fix build issues on patches 3 and 4, and updated 5 and 8 because of
  it.

Changes since v2:
- fixed panic if building with just up to patch 3 applied
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-14 22:57:15 -04:00
Marcelo Ricardo Leitner 4fdbb0efb9 sctp: rework switch cases in sctp_outq_flush_data
Remove an inner one, which tended to be error prone due to the cascading
and it can be replaced by a simple if ().

Rework the outer one so that the actual flush code is not inside it. Now
we first validate if we can or cannot send data, return if not, and then
the flush code.

Suggested-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-14 22:57:15 -04:00
Marcelo Ricardo Leitner 6605f69482 sctp: make use of gfp on retransmissions
Retransmissions may be triggered when in user context, so lets make use
of gfp.

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-14 22:57:15 -04:00
Marcelo Ricardo Leitner 4bf21b61f2 sctp: move transport flush code out of sctp_outq_flush
To the new sctp_outq_flush_transports.

Comment on Nagle is outdated and removed. Nagle is performed earlier, while
checking if the chunk fits the packet: if the outq length is not enough to
fill the packet, it returns SCTP_XMIT_DELAY.

So by when it gets to sctp_outq_flush_transports, it has to go through all
enlisted transports.

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-14 22:57:15 -04:00
Marcelo Ricardo Leitner cb93cc5d06 sctp: move flushing of data chunks out of sctp_outq_flush
To the new sctp_outq_flush_data. Again, smaller functions and with well
defined objectives.

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-14 22:57:15 -04:00
Marcelo Ricardo Leitner 96e0418e81 sctp: move outq data rtx code out of sctp_outq_flush
This patch renames current sctp_outq_flush_rtx to __sctp_outq_flush_rtx
and create a new sctp_outq_flush_rtx, with the code that was on
sctp_outq_flush. Again, the idea is to have functions with small and
defined objectives.

Yes, there is an open-coded path selection in the now sctp_outq_flush_rtx.
That is kept as is for now because it may be very different when we
implement retransmission path selection algorithms for CMT-SCTP.

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-14 22:57:15 -04:00
Marcelo Ricardo Leitner 7a0b9df65a sctp: move the flush of ctrl chunks into its own function
Named sctp_outq_flush_ctrl and, with that, keep the contexts contained.

One small fix embedded is the reset of one_packet at every iteration.
This allows bundling of some control chunks in case they were preceeded by
another control chunk that cannot be bundled.

Other than this, it has the same behavior.

Changes since v2:
- Fixed panic reported by kbuild test robot if building with
  only up to this patch applied, due to bad parameter to
  sctp_outq_select_transport and by not initializing packet after
  calling sctp_outq_flush_ctrl.

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-14 22:57:15 -04:00