Commit graph

357 commits

Author SHA1 Message Date
Rob Herring
1a87e641d8 net: Use of_property_read_bool() for boolean properties
It is preferred to use typed property access functions (i.e.
of_property_read_<type> functions) rather than low-level
of_get_property/of_find_property functions for reading properties.
Convert reading boolean properties to of_property_read_bool().

Reviewed-by: Simon Horman <simon.horman@corigine.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> # for net/can
Acked-by: Kalle Valo <kvalo@kernel.org>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Reviewed-by: Wei Fang <wei.fang@nxp.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-03-16 17:41:28 +00:00
Paolo Abeni
b11919e1bb Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Merge in the left-over fixes before the net-next pull-request.

net/mptcp/subflow.c
  d3295fee3c ("mptcp: use proper req destructor for IPv6")
  36b122baf6 ("mptcp: add subflow_v(4,6)_send_synack()")

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-12-13 09:49:29 +01:00
Yang Yingliang
d1678bf45f net: emaclite: don't call dev_kfree_skb() under spin_lock_irqsave()
It is not allowed to call kfree_skb() or consume_skb() from hardware
interrupt context or with hardware interrupts being disabled.

It should use dev_kfree_skb_irq() or dev_consume_skb_irq() instead.
The difference between them is free reason, dev_kfree_skb_irq() means
the SKB is dropped in error and dev_consume_skb_irq() means the SKB
is consumed in normal.

In this case, dev_kfree_skb() is called in xemaclite_tx_timeout() to
drop the SKB, when tx timeout, so replace it with dev_kfree_skb_irq().

Fixes: bb81b2ddfa ("net: add Xilinx emac lite device driver")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-12-12 09:56:17 +00:00
Andy Chiu
2e1f2c1066 net: axienet: set mdio clock according to bus-frequency
Some FPGA platforms have 80KHz MDIO bus frequency constraint when
connecting Ethernet to its on-board external Marvell PHY. Thus, we may
have to set MDIO clock according to the DT. Otherwise, use the default
2.5 MHz, as specified by 802.3, if the entry is not present.

Also, change MAX_MDIO_FREQ to DEFAULT_MDIO_FREQ because we may actually
set MDIO bus frequency higher than 2.5MHz if undelying devices support
it. And properly disable the mdio bus clock in error path.

Signed-off-by: Andy Chiu <andy.chiu@sifive.com>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-11-21 10:36:03 +00:00
Andy Chiu
29f8eefba3 net: axienet: Unexport and remove unused mdio functions
Both axienet_mdio_{enable/disable} functions are no longer used in
xilinx_axienet_main.c due to 253761a0e6. And axienet_mdio_disable is
not even used in the mdio.c. So unexport and remove them.

Signed-off-by: Andy Chiu <andy.chiu@sifive.com>
Reviewed-by: Greentime Hu <greentime.hu@sifive.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-11-21 10:36:03 +00:00
Russell King (Oracle)
e1f4ecab19 net: remove explicit phylink_generic_validate() references
Virtually all conventional network drivers are now converted to use
phylink_generic_validate() - only DSA drivers and fman_memac remain,
so lets remove the necessity for network drivers to explicitly set
this member, and default to phylink_generic_validate() when unset.
This is possible as .validate must currently be set.

Any remaining instances that have not been addressed by this patch can
be fixed up later.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/E1or0FZ-001tRa-DI@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-07 17:54:57 -08:00
Andy Chiu
a3de357b08 net: axiemac: add PM callbacks to support suspend/resume
Support basic system-wide suspend and resume functions

Signed-off-by: Andy Chiu <andy.chiu@sifive.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-11-07 08:45:07 +00:00
Jakub Kicinski
fbeb229a66 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
No conflicts.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-03 13:21:54 -07:00
Thomas Gleixner
068c38ad88 net: Remove the obsolte u64_stats_fetch_*_irq() users (drivers).
Now that the 32bit UP oddity is gone and 32bit uses always a sequence
count, there is no need for the fetch_irq() variants anymore.

Convert to the regular interface.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-10-28 20:13:54 -07:00
Radhey Shyam Pandey
8fdf3f6aba net: emaclite: update reset_lock member documentation
Instead of generic description, mention what reset_lock actually
protects i.e. lock to serialize xmit and tx_timeout execution.

Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-10-28 11:39:57 +01:00
Jakub Kicinski
b48b89f9c1 net: drop the weight argument from netif_napi_add
We tell driver developers to always pass NAPI_POLL_WEIGHT
as the weight to netif_napi_add(). This may be confusing
to newcomers, drop the weight argument, those who really
need to tweak the weight can use netif_napi_add_weight().

Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> # for CAN
Link: https://lore.kernel.org/r/20220927132753.750069-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-28 18:57:14 -07:00
huangjunxian
7fe85bb3af net: ll_temac: axienet: delete unnecessary blank lines and spaces
Cleaning some static warnings of indent.

Signed-off-by: huangjunxian <huangjunxian6@hisilicon.com>
Signed-off-by: Haoyue Xu <xuhaoyue1@hisilicon.com>
Reviewed-by: Harini Katakam <harini.katakam@amd.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-21 18:25:20 -07:00
huangjunxian
a0a8509768 net: ll_temac: move trailing statements to next line
Cleaning some static warnings of trailing statements.

Signed-off-by: huangjunxian <huangjunxian6@hisilicon.com>
Signed-off-by: Haoyue Xu <xuhaoyue1@hisilicon.com>
Reviewed-by: Harini Katakam <harini.katakam@amd.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-21 18:25:19 -07:00
huangjunxian
a9f1ef7034 net: ll_temac: fix the missing spaces around '='
Cleaning some static warnings of missing spaces around '='.

Signed-off-by: huangjunxian <huangjunxian6@hisilicon.com>
Signed-off-by: Haoyue Xu <xuhaoyue1@hisilicon.com>
Reviewed-by: Harini Katakam <harini.katakam@amd.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-21 18:25:19 -07:00
huangjunxian
7dfd0dcc5e net: ll_temac: delete unnecessary else branch
Cleaning some static warnings of unnecessary else branch.

Signed-off-by: huangjunxian <huangjunxian6@hisilicon.com>
Signed-off-by: Haoyue Xu <xuhaoyue1@hisilicon.com>
Reviewed-by: Harini Katakam <harini.katakam@amd.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-21 18:25:19 -07:00
huangjunxian
42f5d4d0e0 net: ll_temac: axienet: align with open parenthesis
Cleaning some static warnings of open parenthesis.

Signed-off-by: huangjunxian <huangjunxian6@hisilicon.com>
Signed-off-by: Haoyue Xu <xuhaoyue1@hisilicon.com>
Reviewed-by: Harini Katakam <harini.katakam@amd.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-21 18:25:19 -07:00
Haoyue Xu
653de988eb net: ll_temac: Cleanup for function name in a string
As Checkpatch.pl warns, prefer using '"%s...", __func__'
to using 'temac_device_reset', this function's name, in a string.

Signed-off-by: Haoyue Xu <xuhaoyue1@hisilicon.com>
Reviewed-by: Harini Katakam <harini.katakam@amd.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-21 18:25:19 -07:00
huangjunxian
7512411652 net: ll_temac: fix the format of block comments
Cleaning some static warnings of block comments.

Signed-off-by: huangjunxian <huangjunxian6@hisilicon.com>
Signed-off-by: Haoyue Xu <xuhaoyue1@hisilicon.com>
Reviewed-by: Harini Katakam <harini.katakam@amd.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-21 18:25:18 -07:00
Yang Yingliang
75ae8c284c net: ll_temac: Switch to use dev_err_probe() helper
dev_err() can be replace with dev_err_probe() which will check if error
code is -EPROBE_DEFER.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-21 13:50:03 +01:00
Robert Hancock
cb45a8bf46 net: axienet: Switch to 64-bit RX/TX statistics
The RX and TX byte/packet statistics in this driver could be overflowed
relatively quickly on a 32-bit platform. Switch these stats to use the
u64_stats infrastructure to avoid this.

Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Link: https://lore.kernel.org/r/20220829233901.3429419-1-robert.hancock@calian.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-08-31 19:18:20 -07:00
Wolfram Sang
f029c781dd net: ethernet: move from strlcpy with unused retval to strscpy
Follow the advice of the below link and prefer 'strscpy' in this
subsystem. Conversion is 1:1 because the return value is not used.
Generated by a coccinelle script.

Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Petr Machata <petrm@nvidia.com> # For drivers/net/ethernet/mellanox/mlxsw
Acked-by: Geoff Levand <geoff@infradead.org> # For ps3_gelic_net and spider_net_ethtool
Acked-by: Tom Lendacky <thomas.lendacky@amd.com> # For drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c
Acked-by: Marcin Wojtas <mw@semihalf.com> # For drivers/net/ethernet/marvell/mvpp2
Reviewed-by: Leon Romanovsky <leonro@nvidia.com> # For drivers/net/ethernet/mellanox/mlx{4|5}
Reviewed-by: Shay Agroskin <shayagr@amazon.com> # For drivers/net/ethernet/amazon/ena
Acked-by: Krzysztof Hałasa <khalasa@piap.pl> # For IXP4xx Ethernet
Link: https://lore.kernel.org/r/20220830201457.7984-3-wsa+renesas@sang-engineering.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-08-31 14:11:26 -07:00
Deming Wang
e3b64a7a5a net: axienet: Modify function description
Delete duplicate words of "the".

Signed-off-by: Deming Wang <wangdeming@inspur.com>
Link: https://lore.kernel.org/r/20220624013114.1913-1-wangdeming@inspur.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-06-27 21:53:04 -07:00
Yang Yingliang
2e7bf4a6af net: axienet: add missing error return code in axienet_probe()
It should return error code in error path in axienet_probe().

Fixes: 00be43a74c ("net: axienet: make the 64b addresable DMA depends on 64b archectures")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220616062917.3601-1-yangyingliang@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-06-16 11:08:38 -07:00
David S. Miller
5f7b84151a xilinx: Fix build on x86.
CONFIG_64BIT is not sufficient for checking for availability of
iowrite64() and friends.

Also, the out_addr helpers need to be inline.

Fixes: b690f8df64 ("net: axienet: Use iowrite64 to write all 64b descriptor pointers")
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-06-13 12:49:21 +01:00
Andy Chiu
b690f8df64 net: axienet: Use iowrite64 to write all 64b descriptor pointers
According to commit f735c40ed9 ("net: axienet: Autodetect 64-bit DMA
capability") and AXI-DMA spec (pg021), on 64-bit capable dma, only
writing MSB part of tail descriptor pointer causes DMA engine to start
fetching descriptors. However, we found that it is true only if dma is in
idle state. In other words, dma would use a tailp even if it only has LSB
updated, when the dma is running.

The non-atomicity of this behavior could be problematic if enough
delay were introduced in between the 2 writes. For example, if an
interrupt comes right after the LSB write and the cpu spends long
enough time in the handler for the dma to get back into idle state by
completing descriptors, then the seconcd write to MSB would treat dma
to start fetching descriptors again. Since the descriptor next to the
one pointed by current tail pointer is not filled by the kernel yet,
fetching a null descriptor here causes a dma internal error and halt
the dma engine down.

We suggest that the dma engine should start process a 64-bit MMIO write
to the descriptor pointer only if ONE 32-bit part of it is written on all
states. Or we should restrict the use of 64-bit addressable dma on 32-bit
platforms, since those devices have no instruction to guarantee the write
to LSB and MSB part of tail pointer occurs atomically to the dma.

initial condition:
curp =  x-3;
tailp = x-2;
LSB = x;
MSB = 0;

cpu:                       |dma:
 iowrite32(LSB, tailp)     |  completes #(x-3) desc, curp = x-3
 ...                       |  tailp updated
 => irq                    |  completes #(x-2) desc, curp = x-2
    ...                    |  completes #(x-1) desc, curp = x-1
    ...                    |  ...
    ...                    |  completes #x desc, curp = tailp = x
 <= irqreturn              |  reaches tailp == curp = x, idle
 iowrite32(MSB, tailp + 4) |  ...
                           |  tailp updated, starts fetching...
                           |  fetches #(x + 1) desc, sees cntrl = 0
                           |  post Tx error, halt

Signed-off-by: Andy Chiu <andy.chiu@sifive.com>
Reported-by: Max Hsu <max.hsu@sifive.com>
Reviewed-by: Greentime Hu <greentime.hu@sifive.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-06-13 12:36:55 +01:00
Andy Chiu
00be43a74c net: axienet: make the 64b addresable DMA depends on 64b archectures
Currently it is not safe to config the IP as 64-bit addressable on 32-bit
archectures, which cannot perform a double-word store on its descriptor
pointers. The pointer is 64-bit wide if the IP is configured as 64-bit,
and the device would process the partially updated pointer on some
states if the pointer was updated via two store-words. To prevent such
condition, we force a probe fail if we discover that the IP has 64-bit
capability but it is not running on a 64-Bit kernel.

This is a series of patch (1/2). The next patch must be applied in order
to make 64b DMA safe on 64b archectures.

Signed-off-by: Andy Chiu <andy.chiu@sifive.com>
Reported-by: Max Hsu <max.hsu@sifive.com>
Reviewed-by: Greentime Hu <greentime.hu@sifive.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-06-13 12:36:55 +01:00
Robert Hancock
9e2bc267e7 net: axienet: Use NAPI for TX completion path
This driver was using the TX IRQ handler to perform all TX completion
tasks. Under heavy TX network load, this can cause significant irqs-off
latencies (found to be in the hundreds of microseconds using ftrace).
This can cause other issues, such as overrunning serial UART FIFOs when
using high baud rates with limited UART FIFO sizes.

Switch to using a NAPI poll handler to perform the TX completion work
to get this out of hard IRQ context and avoid the IRQ latency impact.
A separate poll handler is used for TX and RX since they have separate
IRQs on this controller, so that the completion work for each of them
stays on the same CPU as the interrupt.

Testing on a Xilinx MPSoC ZU9EG platform using iperf3 from a Linux PC
through a switch at 1G link speed showed no significant change in TX or
RX throughput, with approximately 941 Mbps before and after. Hard IRQ
time in the TX throughput test was significantly reduced from 12% to
below 1% on the CPU handling TX interrupts, with total hard+soft IRQ CPU
usage dropping from about 56% down to 48%.

Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-05-13 12:22:11 +01:00
Robert Hancock
f0cf4000f5 net: axienet: Be more careful about updating tx_bd_tail
The axienet_start_xmit function was updating the tx_bd_tail variable
multiple times, with potential rollbacks on error or invalid
intermediate positions, even though this variable is also used in the
TX completion path. Use READ_ONCE where this variable is read and
WRITE_ONCE where it is written to make this update more atomic, and
move the write before the MMIO write to start the transfer, so it is
protected by that implicit write barrier.

Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-05-13 12:22:11 +01:00
Jakub Kicinski
c8227d568d Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
tools/testing/selftests/net/forwarding/Makefile
  f62c5acc80 ("selftests/net/forwarding: add missing tests to Makefile")
  50fe062c80 ("selftests: forwarding: new test, verify host mdb entries")
https://lore.kernel.org/all/20220502111539.0b7e4621@canb.auug.org.au/

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-05 13:03:18 -07:00
Shravya Kumbham
7a6bc33ab5 net: emaclite: Add error handling for of_address_to_resource()
check the return value of of_address_to_resource() and also add
missing of_node_put() for np and npp nodes.

Fixes: e0a3bc6544 ("net: emaclite: Support multiple phys connected to one MDIO bus")
Addresses-Coverity: Event check_return value.
Signed-off-by: Shravya Kumbham <shravya.kumbham@xilinx.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-05-03 11:07:32 +02:00
Shravya Kumbham
b800528b97 net: emaclite: Don't advertise 1000BASE-T and do auto negotiation
In xemaclite_open() function we are setting the max speed of
emaclite to 100Mb using phy_set_max_speed() function so,
there is no need to write the advertising registers to stop
giga-bit speed and the phy_start() function starts the
auto-negotiation so, there is no need to handle it separately
using advertising registers. Remove the phy_read and phy_write
of advertising registers in xemaclite_open() function.

Signed-off-by: Shravya Kumbham <shravya.kumbham@xilinx.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-05-03 11:07:32 +02:00
Shravya Kumbham
7240bf6fb2 net: emaclite: Remove custom BUFFER_ALIGN macro
BUFFER_ALIGN macro is used to calculate the number of bytes
required for the next alignment. Instead of this, we can directly
use the skb_reserve(skb, NET_IP_ALIGN) to make the protocol header
buffer aligned on at least a 4-byte boundary, where the NET_IP_ALIGN
is by default defined as 2. So removing the BUFFER_ALIGN and its
related defines which it can be done by the skb_reserve() itself.

Signed-off-by: Shravya Kumbham <shravya.kumbham@xilinx.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-04-15 11:46:29 +01:00
Michal Simek
7ae7d494f6 net: emaclite: Update copyright text to correct format
Based on recommended guidance Copyright term should be also present in
front of (c). That's why aligned driver to match this pattern.
It helps automated tools with source code scanning.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-04-15 11:46:29 +01:00
Radhey Shyam Pandey
945e659dff net: emaclite: Fix coding style
Make coding style changes to fix checkpatch script warnings.
There is no functional change. Fixes below check and warnings-

CHECK: Blank lines aren't necessary after an open brace '{'
CHECK: spinlock_t definition without comment
CHECK: Please don't use multiple blank lines
WARNING: Prefer 'unsigned int' to bare use of 'unsigned'
CHECK: braces {} should be used on all arms of this statement
CHECK: Unbalanced braces around else statement
CHECK: Alignment should match open parenthesis
WARNING: Missing a blank line after declarations

Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-04-15 11:46:29 +01:00
Jakub Kicinski
dc2e0617f1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
No conflicts.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-04-07 23:24:23 -07:00
Wang Qing
be8d9d0527 net: ethernet: xilinx: use of_property_read_bool() instead of of_get_property
"little-endian" has no specific content, use more helper function
of_property_read_bool() instead of of_get_property()

Signed-off-by: Wang Qing <wangqing@vivo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-04-06 15:18:03 +01:00
Andy Chiu
19c7a43912 net: axiemac: use a phandle to reference pcs_phy
In some SGMII use cases where both a fixed link external PHY and the
internal PCS/PMA PHY need to be configured, we should explicitly use a
phandle "pcs-phy" to get the reference to the PCS/PMA PHY. Otherwise, the
driver would use "phy-handle" in the DT as the reference to both the
external and the internal PCS/PMA PHY.

In other cases where the core is connected to a SFP cage, we could still
point phy-handle to the intenal PCS/PMA PHY, and let the driver connect
to the SFP module, if exist, via phylink.

Signed-off-by: Andy Chiu <andy.chiu@sifive.com>
Reviewed-by: Greentime Hu <greentime.hu@sifive.com>
Reviewed-by: Robert Hancock <robert.hancock@calian.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-04-06 13:54:52 +01:00
Andy Chiu
ab3a5d4c60 net: axienet: factor out phy_node in struct axienet_local
the struct member `phy_node` of struct axienet_local is not used by the
driver anymore after initialization. It might be a remnent of old code
and could be removed.

Signed-off-by: Andy Chiu <andy.chiu@sifive.com>
Reviewed-by: Greentime Hu <greentime.hu@sifive.com>
Reviewed-by: Robert Hancock <robert.hancock@calian.com>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-04-06 13:54:51 +01:00
Andy Chiu
d1c4f93e3f net: axienet: setup mdio unconditionally
The call to axienet_mdio_setup should not depend on whether "phy-node"
pressents on the DT. Besides, since `lp->phy_node` is used if PHY is in
SGMII or 100Base-X modes, move it into the if statement. And the next patch
will remove `lp->phy_node` from driver's private structure and do an
of_node_put on it right away after use since it is not used elsewhere.

Signed-off-by: Andy Chiu <andy.chiu@sifive.com>
Reviewed-by: Greentime Hu <greentime.hu@sifive.com>
Reviewed-by: Robert Hancock <robert.hancock@calian.com>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-04-06 13:54:51 +01:00
Jakub Kicinski
1e8a3f0d2a Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
net/dsa/dsa2.c
  commit afb3cc1a39 ("net: dsa: unlock the rtnl_mutex when dsa_master_setup() fails")
  commit e83d565378 ("net: dsa: replay master state events in dsa_tree_{setup,teardown}_master")
https://lore.kernel.org/all/20220307101436.7ae87da0@canb.auug.org.au/

drivers/net/ethernet/intel/ice/ice.h
  commit 97b0129146 ("ice: Fix error with handling of bonding MTU")
  commit 43113ff734 ("ice: add TTY for GNSS module for E810T device")
https://lore.kernel.org/all/20220310112843.3233bcf1@canb.auug.org.au/

drivers/staging/gdm724x/gdm_lte.c
  commit fc7f750dc9 ("staging: gdm724x: fix use after free in gdm_lte_rx()")
  commit 4bcc4249b4 ("staging: Use netif_rx().")
https://lore.kernel.org/all/20220308111043.1018a59d@canb.auug.org.au/

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-03-10 17:16:56 -08:00
Robert Hancock
6c7e7da2e0 net: axienet: Use napi_alloc_skb when refilling RX ring
Use napi_alloc_skb to allocate memory when refilling the RX ring
in axienet_poll for more efficiency. napi_alloc_skb() can reuse
softirq-local cache of freed skbs which may still be cache-warm
and skipping allocator calls.

Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Link: https://lore.kernel.org/r/20220308211013.1530955-1-robert.hancock@calian.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-03-09 20:19:16 -08:00
Miaoqian Lin
b19ab4b38b ethernet: Fix error handling in xemaclite_of_probe
This node pointer is returned by of_parse_phandle() with refcount
incremented in this function. Calling of_node_put() to avoid the
refcount leak. As the remove function do.

Fixes: 5cdaaa1286 ("net: emaclite: adding MDIO and phy lib support")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20220308024751.2320-1-linmq006@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-03-08 22:15:01 -08:00
Robert Hancock
0b79b8dc97 net: axienet: add coalesce timer ethtool configuration
Add the ability to configure the RX/TX coalesce timer with ethtool.
Change default setting to scale with the clock rate rather than being a
fixed number of clock cycles.

Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-03-05 11:12:08 +00:00
Robert Hancock
40da5d680e net: axienet: reduce default RX interrupt threshold to 1
Now that NAPI has been implemented, the hardware interrupt mitigation
mechanism is not needed to avoid excessive interrupt load in most cases.
Reduce the default RX interrupt threshold to 1 to reduce introduced
latency. This can be increased with ethtool if desired if some applications
still want to reduce interrupts.

Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-03-05 11:12:08 +00:00
Robert Hancock
cc37610caa net: axienet: implement NAPI and GRO receive
Implement NAPI and GRO receive. In addition to better performance, this
also avoids handling RX packets in hard IRQ context, which reduces the
IRQ latency impact to other devices.

Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-03-05 11:12:08 +00:00
Robert Hancock
0155ae6eb8 net: axienet: don't set IRQ timer when IRQ delay not used
When the RX or TX coalesce count is set to 1, there's no point in
setting the delay timer value since an interrupt will already be raised
on every packet, and the delay interrupt just causes extra pointless
interrupts.

Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-03-05 11:12:08 +00:00
Robert Hancock
84b9ccc074 net: axienet: Clean up DMA start/stop and error handling
Simplify the DMA error handling process, and remove some duplicated code
between the DMA error handling and the stop function.

Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-03-05 11:12:08 +00:00
Robert Hancock
17882fd425 net: axienet: Clean up device used for DMA calls
Instead of using lp->ndev.parent to find the correct device to use for
DMA API calls, just use the dev attribute in the device structure.

Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-03-05 11:12:08 +00:00
Robert Hancock
7a7d340ba4 net: axienet: fix RX ring refill allocation failure handling
If a memory allocation error occurred during an attempt to refill a slot
in the RX ring after the packet was received, the hardware tail pointer
would still have been updated to point to or past the slot which remained
marked as previously completed. This would likely result in the DMA engine
raising an error when it eventually tried to use that slot again.

If a slot cannot be refilled, then just stop processing and do not move
the tail pointer past it. On the next attempt, we should skip receiving
the packet from the empty slot and just try to refill it again.

This failure mode has not actually been observed, but was found as part
of other driver updates.

Fixes: 8a3b7a252d ("drivers/net/ethernet/xilinx: added Xilinx AXI Ethernet driver")
Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-03-05 11:12:08 +00:00
Jakub Kicinski
aaa25a2fa7 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
tools/testing/selftests/net/mptcp/mptcp_join.sh
  34aa6e3bcc ("selftests: mptcp: add ip mptcp wrappers")

  857898eb4b ("selftests: mptcp: add missing join check")
  6ef84b1517 ("selftests: mptcp: more robust signal race test")
https://lore.kernel.org/all/20220221131842.468893-1-broonie@kernel.org/

drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/act.h
drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/ct.c
  fb7e76ea3f ("net/mlx5e: TC, Skip redundant ct clear actions")
  c63741b426 ("net/mlx5e: Fix MPLSoUDP encap to use MPLS action information")

  09bf979232 ("net/mlx5e: TC, Move pedit_headers_action to parse_attr")
  84ba8062e3 ("net/mlx5e: Test CT and SAMPLE on flow attr")
  efe6f961cd ("net/mlx5e: CT, Don't set flow flag CT for ct clear flow")
  3b49a7edec ("net/mlx5e: TC, Reject rules with multiple CT actions")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-02-24 17:54:25 -08:00