platform/kernel/linux-starfive.git
3 years agonet: hns3: refactor out hclge_rm_vport_all_mac_table()
Hao Chen [Fri, 12 Feb 2021 03:24:17 +0000 (11:24 +0800)]
net: hns3: refactor out hclge_rm_vport_all_mac_table()

hclge_rm_vport_all_mac_table() is bloated, so split it into
separate functions for readability and maintainability.

Signed-off-by: Hao Chen <chenhao288@hisilicon.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: refactor out hclgevf_set_rss_tuple()
Huazhong Tan [Fri, 12 Feb 2021 03:24:16 +0000 (11:24 +0800)]
net: hns3: refactor out hclgevf_set_rss_tuple()

To make it more readable and maintainable, split
hclgevf_set_rss_tuple() into two parts.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: refactor out hclge_set_rss_tuple()
Huazhong Tan [Fri, 12 Feb 2021 03:24:15 +0000 (11:24 +0800)]
net: hns3: refactor out hclge_set_rss_tuple()

To make it more readable and maintainable, split
hclge_set_rss_tuple() into two parts.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: split out hclgevf_cmd_send()
Yufeng Mo [Fri, 12 Feb 2021 03:24:14 +0000 (11:24 +0800)]
net: hns3: split out hclgevf_cmd_send()

hclgevf_cmd_send() is bloated, so split it into separate
functions for readability and maintainability.

Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: split out hclge_cmd_send()
Yufeng Mo [Fri, 12 Feb 2021 03:24:13 +0000 (11:24 +0800)]
net: hns3: split out hclge_cmd_send()

hclge_cmd_send() is bloated, so split it into separate
functions for readability and maintainability.

Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: split out hclge_dbg_dump_qos_buf_cfg()
Jian Shen [Fri, 12 Feb 2021 03:21:08 +0000 (11:21 +0800)]
net: hns3: split out hclge_dbg_dump_qos_buf_cfg()

hclge_dbg_dump_qos_buf_cfg() is bloated, so split it into
separate functions for readability and maintainability.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: refactor out hclgevf_get_rss_tuple()
Jian Shen [Fri, 12 Feb 2021 03:21:07 +0000 (11:21 +0800)]
net: hns3: refactor out hclgevf_get_rss_tuple()

To improve code readability and maintainability, separate
the flow type parsing part and the converting part from
bloated hclgevf_get_rss_tuple().

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: refactor out hclge_get_rss_tuple()
Jian Shen [Fri, 12 Feb 2021 03:21:06 +0000 (11:21 +0800)]
net: hns3: refactor out hclge_get_rss_tuple()

To improve code readability and maintainability, separate
the flow type parsing part and the converting part from
bloated hclge_get_rss_tuple().

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: refactor out hclge_set_vf_vlan_common()
Peng Li [Fri, 12 Feb 2021 03:21:05 +0000 (11:21 +0800)]
net: hns3: refactor out hclge_set_vf_vlan_common()

To improve code readability and maintainability, separate
the command handling part and the status parsing part from
bloated hclge_set_vf_vlan_common().

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: use ipv6_addr_any() helper
Jiaran Zhang [Fri, 12 Feb 2021 03:21:04 +0000 (11:21 +0800)]
net: hns3: use ipv6_addr_any() helper

Use common ipv6_addr_any() to determine if an addr is ipv6 any addr.

Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: clean up hns3_dbg_cmd_write()
Peng Li [Fri, 12 Feb 2021 03:21:03 +0000 (11:21 +0800)]
net: hns3: clean up hns3_dbg_cmd_write()

As more commands are added, hns3_dbg_cmd_write() is going to
get more bloated, so move the part about command check into
a separate function.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: refactor out hclgevf_cmd_convert_err_code()
Peng Li [Fri, 12 Feb 2021 03:21:02 +0000 (11:21 +0800)]
net: hns3: refactor out hclgevf_cmd_convert_err_code()

To improve code readability and maintainability, refactor
hclgevf_cmd_convert_err_code() with an array of imp_errcode
and common_errno mapping, instead of a bloated switch/case.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: refactor out hclge_cmd_convert_err_code()
Peng Li [Fri, 12 Feb 2021 03:21:01 +0000 (11:21 +0800)]
net: hns3: refactor out hclge_cmd_convert_err_code()

To improve code readability and maintainability, refactor
hclge_cmd_convert_err_code() with an array of imp_errcode
and common_errno mapping, instead of a bloated switch/case.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'sock-rx-qmap'
David S. Miller [Fri, 12 Feb 2021 03:08:07 +0000 (19:08 -0800)]
Merge branch 'sock-rx-qmap'

Tariq Toukan says:

====================
Compile-flag for sock RX queue mapping

Socket's RX queue mapping logic is useful also for non-XPS use cases.
This series breaks the dependency between the two, introducing a new
kernel config flag SOCK_RX_QUEUE_MAPPING.

Here we select this new kernel flag from TLS_DEVICE, as well as XPS.
====================

Acked-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet/mlx5: Remove TLS dependencies on XPS
Tariq Toukan [Thu, 11 Feb 2021 11:35:53 +0000 (13:35 +0200)]
net/mlx5: Remove TLS dependencies on XPS

No real dependency on XPS, but on RX queue mapping, which
is being selected by TLS_DEVICE.

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/tls: Select SOCK_RX_QUEUE_MAPPING from TLS_DEVICE
Tariq Toukan [Thu, 11 Feb 2021 11:35:52 +0000 (13:35 +0200)]
net/tls: Select SOCK_RX_QUEUE_MAPPING from TLS_DEVICE

Compile-in the socket RX queue mapping field and logic when TLS_DEVICE
is enabled. This allows device drivers to pick the recorded socket's
RX queue and use it for streams distribution.

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/sock: Add kernel config SOCK_RX_QUEUE_MAPPING
Tariq Toukan [Thu, 11 Feb 2021 11:35:51 +0000 (13:35 +0200)]
net/sock: Add kernel config SOCK_RX_QUEUE_MAPPING

Use a new config SOCK_RX_QUEUE_MAPPING to compile-in the socket
RX queue field and logic, instead of the XPS config.
This breaks dependency in XPS, and allows selecting it from non-XPS
use cases, as we do in the next patch.

In addition, use the new flag to wrap the logic in sk_rx_queue_get()
and protect access to the sk_rx_queue_mapping field, while keeping
the function exposed unconditionally, just like sk_rx_queue_set()
and sk_rx_queue_clear().

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agotcp: Sanitize CMSG flags and reserved args in tcp_zerocopy_receive.
Arjun Roy [Thu, 11 Feb 2021 21:21:07 +0000 (13:21 -0800)]
tcp: Sanitize CMSG flags and reserved args in tcp_zerocopy_receive.

Explicitly define reserved field and require it and any subsequent
fields to be zero-valued for now. Additionally, limit the valid CMSG
flags that tcp_zerocopy_receive accepts.

Fixes: 7eeba1706eba ("tcp: Add receive timestamp support for receive zerocopy.")
Signed-off-by: Arjun Roy <arjunroy@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Suggested-by: David Ahern <dsahern@gmail.com>
Suggested-by: Leon Romanovsky <leon@kernel.org>
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agor8169: handle tx before rx in napi poll
Heiner Kallweit [Thu, 11 Feb 2021 20:20:08 +0000 (21:20 +0100)]
r8169: handle tx before rx in napi poll

Cleaning up tx descriptors first increases the chance that
rtl_rx() can allocate new skb's from the cache.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: fix dev_ifsioc_locked() race condition
Cong Wang [Thu, 11 Feb 2021 19:34:10 +0000 (11:34 -0800)]
net: fix dev_ifsioc_locked() race condition

dev_ifsioc_locked() is called with only RCU read lock, so when
there is a parallel writer changing the mac address, it could
get a partially updated mac address, as shown below:

Thread 1 Thread 2
// eth_commit_mac_addr_change()
memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
// dev_ifsioc_locked()
memcpy(ifr->ifr_hwaddr.sa_data,
dev->dev_addr,...);

Close this race condition by guarding them with a RW semaphore,
like netdev_get_name(). We can not use seqlock here as it does not
allow blocking. The writers already take RTNL anyway, so this does
not affect the slow path. To avoid bothering existing
dev_set_mac_address() callers in drivers, introduce a new wrapper
just for user-facing callers on ioctl and rtnetlink paths.

Note, bonding also changes slave mac addresses but that requires
a separate patch due to the complexity of bonding code.

Fixes: 3710becf8a58 ("net: RCU locking for simple ioctl()")
Reported-by: "Gong, Sishuai" <sishuai@purdue.edu>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: fix interrupt mask/unmask skip condition
Stefan Chulski [Thu, 11 Feb 2021 15:13:19 +0000 (17:13 +0200)]
net: mvpp2: fix interrupt mask/unmask skip condition

The condition should be skipped if CPU ID equal to nthreads.
The patch doesn't fix any actual issue since
nthreads = min_t(unsigned int, num_present_cpus(), MVPP2_MAX_THREADS).
On all current Armada platforms, the number of CPU's is
less than MVPP2_MAX_THREADS.

Fixes: e531f76757eb ("net: mvpp2: handle cases where more CPUs are available than s/w threads")
Reported-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Reviewed-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'am65-cpsw-nuss-switchdev-driver'
David S. Miller [Fri, 12 Feb 2021 01:52:13 +0000 (17:52 -0800)]
Merge branch 'am65-cpsw-nuss-switchdev-driver'

Vignesh Raghavendra says:

====================
net: ti: am65-cpsw-nuss: Add switchdev driver

This series adds switchdev support for AM65 CPSW NUSS driver to support
multi port CPSW present on J721e and AM64 SoCs.
It adds devlink hook to switch b/w switch mode and multi mac mode.

v2:
Rebased on latest net-next
Update patch 1/4 with rationale for using devlink
====================

3 years agodocs: networking: ti: Add driver doc for AM65 NUSS switch driver
Vignesh Raghavendra [Thu, 11 Feb 2021 10:56:44 +0000 (16:26 +0530)]
docs: networking: ti: Add driver doc for AM65 NUSS switch driver

J721e, J7200 and AM64 have multi port switches which can work in multi
mac mode and in switch mode. Add documentation explaining how to use
different modes.

Borrowed from:
Documentation/networking/device_drivers/ethernet/ti/cpsw_switchdev.rst

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ti: am65-cpsw-nuss: Add switchdev support
Vignesh Raghavendra [Thu, 11 Feb 2021 10:56:43 +0000 (16:26 +0530)]
net: ti: am65-cpsw-nuss: Add switchdev support

J721e, J7200 and AM64 have multi port switches which can work in multi
mac mode and in switch mode. Add support for configuring this HW in
switch mode using devlink and switchdev notifiers.

Support is similar to existing CPSW switchdev implementation of TI's 32 bit
platform like AM33/AM43/AM57.

To enable switch mode:
devlink dev param set platform/8000000.ethernet name switch_mode value true cmode runtime

All configuration is implemented via switchdev API and notifiers.
Supported:
      - SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS
      - SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS
      - SWITCHDEV_ATTR_ID_PORT_STP_STATE
      - SWITCHDEV_OBJ_ID_PORT_VLAN
      - SWITCHDEV_OBJ_ID_PORT_MDB
      - SWITCHDEV_OBJ_ID_HOST_MDB

Hence AM65 CPSW switchdev driver supports:
     - FDB offloading
     - MDB offloading
     - VLAN filtering and offloading
     - STP

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ti: am65-cpsw-nuss: Add netdevice notifiers
Vignesh Raghavendra [Thu, 11 Feb 2021 10:56:42 +0000 (16:26 +0530)]
net: ti: am65-cpsw-nuss: Add netdevice notifiers

Register netdevice notifiers in order to receive notification when
individual MAC ports are added to the HW bridge.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ti: am65-cpsw-nuss: Add devlink support
Vignesh Raghavendra [Thu, 11 Feb 2021 10:56:41 +0000 (16:26 +0530)]
net: ti: am65-cpsw-nuss: Add devlink support

AM65 NUSS ethernet switch on K3 devices can be configured to work either
in independent mac mode where each port acts as independent network
interface (multi mac) or switch mode.

Add devlink hooks to provide a way to switch b/w these modes.

Rationale to use devlink instead of defaulting to bridge mode is that
SoC use cases require to support multiple independent MAC ports with no
switching so that users can use software bridges with multi-mac
configuration (e.g: to support LAG, HSR/PRP, etc). Also, switching
between multi mac and switch mode requires significant Port and ALE
reconfiguration, therefore is easier to be made as part of mode change
devlink hooks. It also allows to keep user interface similar to what
was implemented for the previous generation of TI CPSW IP
(on AM33/AM43/AM57 SoCs).

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'bcm4908_enet-post-review-fixes'
David S. Miller [Thu, 11 Feb 2021 23:04:17 +0000 (15:04 -0800)]
Merge branch 'bcm4908_enet-post-review-fixes'

Rafał Miłecki says:

====================
bcm4908_enet: post-review fixes

V2 of my BCM4908 Ethernet patchset was applied to the net-next.git and
it was later that is received some extra reviews. I'm sending patches
that handle pointed out issues.

David: earler I missed that V2 was applied and I sent V3 and V4 of my
inital patchset. Sorry for that. I think it's the best to ignore V3 and
V4 I sent and proceed with this fixes patchset instead.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: broadcom: bcm4908_enet: fix endianness in xmit code
Rafał Miłecki [Thu, 11 Feb 2021 12:12:39 +0000 (13:12 +0100)]
net: broadcom: bcm4908_enet: fix endianness in xmit code

Use le32_to_cpu() for reading __le32 struct field filled by hw.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: broadcom: bcm4908_enet: fix received skb length
Rafał Miłecki [Thu, 11 Feb 2021 12:12:38 +0000 (13:12 +0100)]
net: broadcom: bcm4908_enet: fix received skb length

Use ETH_FCS_LEN instead of magic value and drop incorrect + 2

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: broadcom: bcm4908_enet: fix minor typos
Rafał Miłecki [Thu, 11 Feb 2021 12:12:37 +0000 (13:12 +0100)]
net: broadcom: bcm4908_enet: fix minor typos

1. Fix "ensable" typo noticed by Andrew
2. Fix chipset name in the struct net_device_ops variable

Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: broadcom: bcm4908_enet: drop "inline" from C functions
Rafał Miłecki [Thu, 11 Feb 2021 12:12:36 +0000 (13:12 +0100)]
net: broadcom: bcm4908_enet: drop "inline" from C functions

It seems preferred to let compiler optimize code if applicable.
While at it drop unused enet_umac_maskset().

Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: broadcom: bcm4908_enet: drop unneeded memset()
Rafał Miłecki [Thu, 11 Feb 2021 12:12:35 +0000 (13:12 +0100)]
net: broadcom: bcm4908_enet: drop unneeded memset()

dma_alloc_coherent takes care of zeroing allocated memory

Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: broadcom: rename BCM4908 driver & update DT binding
Rafał Miłecki [Thu, 11 Feb 2021 12:12:34 +0000 (13:12 +0100)]
net: broadcom: rename BCM4908 driver & update DT binding

compatible string was updated to match normal naming convention so
update driver as well

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodt-bindings: net: bcm4908-enet: include ethernet-controller.yaml
Rafał Miłecki [Thu, 11 Feb 2021 12:12:33 +0000 (13:12 +0100)]
dt-bindings: net: bcm4908-enet: include ethernet-controller.yaml

It should be /included/ by every Ethernet controller binding. It adds
support for various generic properties.

Suggested-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodt-bindings: net: rename BCM4908 Ethernet binding
Rafał Miłecki [Thu, 11 Feb 2021 12:12:32 +0000 (13:12 +0100)]
dt-bindings: net: rename BCM4908 Ethernet binding

Rob pointed out that a normal convention is "brcm,bcm4908-enet" so
update whole binding to match it.

Suggested-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kern
David S. Miller [Thu, 11 Feb 2021 22:59:01 +0000 (14:59 -0800)]
Merge branch 'for-upstream' of git://git./linux/kern
el/git/bluetooth/bluetooth-next

Johan Hedberg says:

====================
pull request: bluetooth-next 2021-02-11

Here's the main bluetooth-next pull request for 5.12:

 - Add support for advertising monitor offliading using Microsoft
   vendor extensions
 - Add firmware download support for MediaTek MT7921U USB devices
 - Suspend-related fixes for Qualcomm devices
 - Add support for Intel GarfieldPeak controller
 - Various other smaller fixes & cleanups

Please let me know if there are any issues pulling. Thanks.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'marvell-cn10k'
David S. Miller [Thu, 11 Feb 2021 22:55:04 +0000 (14:55 -0800)]
Merge branch 'marvell-cn10k'

Geetha sowjanya says:

====================
Add Marvell CN10K support

The current admin function (AF) driver and the netdev driver supports
OcteonTx2 silicon variants. The same OcteonTx2's
Resource Virtualization Unit (RVU) is carried forward to the next-gen
silicon ie OcteonTx3, with some changes and feature enhancements.

This patch set adds support for OcteonTx3 (CN10K) silicon and gets
the drivers to the same level as OcteonTx2. No new OcteonTx3 specific
features are added.

Changes cover below HW level differences
- PCIe BAR address changes wrt shared mailbox memory region
- Receive buffer freeing to HW
- Transmit packet's descriptor submission to HW
- Programmable HW interface identifiers (channels)
- Increased MTU support
- A Serdes MAC block (RPM) configuration

v5-v6
Rebased on top of latest net-next branch.

v4-v5
Fixed sparse warnings.

v3-v4
Fixed compiler warnings.

v2-v3
Reposting as a single thread.
Rebased on top latest net-next branch.

v1-v2
Fixed check-patch reported issues.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-af: cn10k: MAC internal loopback support
Hariprasad Kelam [Thu, 11 Feb 2021 15:58:34 +0000 (21:28 +0530)]
octeontx2-af: cn10k: MAC internal loopback support

MAC on CN10K silicon support loopback for selftest or debug purposes.
This patch does necessary configuration to loopback packets upon receiving
request from LMAC mapped RVU PF's netdev via mailbox.

Also MAC (CGX) on OcteonTx2 silicon variants and MAC (RPM) on
OcteonTx3 CN10K are different and loopback needs to be configured
differently. Upper layer interface between RVU AF and PF netdev is
kept same. Based on silicon variant appropriate fn() pointer is
called to config the MAC.

Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-af: cn10k: Add RPM Rx/Tx stats support
Hariprasad Kelam [Thu, 11 Feb 2021 15:58:33 +0000 (21:28 +0530)]
octeontx2-af: cn10k: Add RPM Rx/Tx stats support

RPM supports below list of counters as an extension to existing counters
 *  class based flow control pause frames
 *  vlan/jabber/fragmented packets
 *  fcs/alignment/oversized error packets

This patch adds support to display supported RPM counters via debugfs
and define new mbox rpm_stats to read all support counters.

Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <Sunil.Goutham@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-af: cn10k: Add RPM LMAC pause frame support
Rakesh Babu [Thu, 11 Feb 2021 15:58:32 +0000 (21:28 +0530)]
octeontx2-af: cn10k: Add RPM LMAC pause frame support

Flow control configuration is different for CGX(Octeontx2)
and RPM(CN10K) functional blocks. This patch adds the necessary
changes for RPM to support 802.3 pause frames configuration on
cn10k platforms.

Signed-off-by: Rakesh Babu <rsaladi2@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <Sunil.Goutham@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-pf: cn10k: Get max mtu supported from admin function
Hariprasad Kelam [Thu, 11 Feb 2021 15:58:31 +0000 (21:28 +0530)]
octeontx2-pf: cn10k: Get max mtu supported from admin function

CN10K supports max MTU of 16K on LMAC links and 64k on LBK
links and Octeontx2 silicon supports 9K mtu on both links.
Get the same from nix_get_hw_info mbox message in netdev probe.

This patch also calculates receive buffer size required based
on the MTU set.

Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-af: cn10K: Add MTU configuration
Hariprasad Kelam [Thu, 11 Feb 2021 15:58:30 +0000 (21:28 +0530)]
octeontx2-af: cn10K: Add MTU configuration

OcteonTx3 CN10K silicon supports bigger MTU when compared
to 9216 MTU supported by OcteonTx2 silicon variants. Lookback
interface supports upto 64K and RPM LMAC interfaces support
upto 16K.

This patch does the necessary configuration and adds support
for PF/VF drivers to retrieve max packet size supported via mbox

This patch also configures tx link credit by considering supported
fifo size and max packet length for Octeontx3 silicon.

This patch also removes platform specific name from the driver name.

Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-af: cn10k: Add support for programmable channels
Subbaraya Sundeep [Thu, 11 Feb 2021 15:58:29 +0000 (21:28 +0530)]
octeontx2-af: cn10k: Add support for programmable channels

NIX uses unique channel numbers to identify the packet sources/sinks
like CGX,LBK and SDP. The channel numbers assigned to each block are
hardwired in CN9xxx silicon.
The fixed channel numbers in CN9xxx are:

0x0 | a << 8 | b            - LBK(0..3)_CH(0..63)
0x0 | a << 8                - Reserved
0x700 | a                   - SDP_CH(0..255)
0x800 | a << 8 | b << 4 | c - CGX(0..7)_LMAC(0..3)_CH(0..15)

All the channels in the above fixed enumerator(with maximum
number of blocks) are not required since some chips
have less number of blocks.
For CN10K silicon the channel numbers need to be programmed by
software in each block with the base channel number and range of
channels. This patch calculates and assigns the channel numbers
to efficiently distribute the channel number range(0-4095) among
all the blocks. The assignment is made based on the actual number of
blocks present and also contiguously leaving no holes.
The channel numbers remaining after the math are used as new CPT
replay channels present in CN10K. Also since channel numbers are
not fixed the transmit channel link number needed by AF consumers
is calculated by AF and sent along with nix_lf_alloc mailbox response.

Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-af: cn10k: Add RPM MAC support
Hariprasad Kelam [Thu, 11 Feb 2021 15:58:28 +0000 (21:28 +0530)]
octeontx2-af: cn10k: Add RPM MAC support

OcteonTx2's next gen platform the CN10K has RPM MAC which has a
different serdes when compared to CGX MAC. Though the underlying
HW is different, the CSR interface has been designed largely inline
with CGX MAC, with few exceptions though. So we are using the same
CGX driver for RPM MAC as well and will have a different set of APIs
for RPM where ever necessary.

This patch adds initial support for CN10K's RPM MAC i.e. the driver
registration, communication with firmware etc. For communication with
firmware, RPM provides a different IRQ when compared to CGX.
The CGX and RPM blocks support different features. Currently few
features like ptp, flowcontrol and higig are not supported by RPM. This
patch adds new mailbox message "CGX_FEATURES_GET" to get the list of
features supported by underlying MAC.

RPM has different implementations for RX/TX stats. Unlike CGX,
bar offset of stat registers are different. This patch adds
support to access the same and dump the values in debugfs.

Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-pf: cn10k: Use LMTST lines for NPA/NIX operations
Geetha sowjanya [Thu, 11 Feb 2021 15:58:27 +0000 (21:28 +0530)]
octeontx2-pf: cn10k: Use LMTST lines for NPA/NIX operations

This patch adds support to use new LMTST lines for NPA batch free
and burst SQE flush. Adds new dev_hw_ops structure to hold platform
specific functions and create new files cn10k.c and cn10k.h.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-pf: cn10k: Map LMTST region
Geetha sowjanya [Thu, 11 Feb 2021 15:58:26 +0000 (21:28 +0530)]
octeontx2-pf: cn10k: Map LMTST region

On CN10K platform transmit/receive buffer alloc and free from/to hardware
had changed to support burst operation. Whereas pervious silicon's only
support single buffer free at a time.
To Support the same firmware allocates a DRAM region for each PF/VF for
storing LMTLINES. These LMTLINES are used for NPA batch free and for
flushing SQE to the hardware.
PF/VF LMTST region is accessed via BAR4. PFs LMTST region is followed
by its VFs mbox memory. The size of region varies from 2KB to 256KB based
on number of LMTLINES configured.

This patch adds support for
- Mapping PF/VF LMTST region.
- Reserves 0-71 (RX + TX + XDP) LMTST lines for NPA batch
  free operation.
- Reserves 72-512 LMTST lines for NIX SQE flush.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-pf: cn10k: Initialise NIX context
Geetha sowjanya [Thu, 11 Feb 2021 15:58:25 +0000 (21:28 +0530)]
octeontx2-pf: cn10k: Initialise NIX context

On CN10K platform NIX RQ and SQ context structure got changed.
This patch uses new mbox message "NIX_CN10K_AQ_ENQ" for NIX
context initialization on CN10K platform.

This patch also updates the nix_rx_parse_s and nix_sqe_sg_s
structures to add packet steering bit feilds.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-af: cn10k: Update NIX and NPA context in debugfs
Geetha sowjanya [Thu, 11 Feb 2021 15:58:24 +0000 (21:28 +0530)]
octeontx2-af: cn10k: Update NIX and NPA context in debugfs

On CN10K platform NPA and NIX context structure bit fields
had changed to support new features like bandwidth steering etc.
This patch dumps approprate context for CN10K platform.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-af: cn10k: Update NIX/NPA context structure
Geetha sowjanya [Thu, 11 Feb 2021 15:58:23 +0000 (21:28 +0530)]
octeontx2-af: cn10k: Update NIX/NPA context structure

NIX hardware context structure got changed to accommodate new
features like bandwidth steering, L3/L4 outer/inner checksum
enable/disable etc., on CN10K platform.
This patch defines new mbox message NIX_CN10K_AQ_INST for new
NIX context initialization.

This patch also updates the NPA context structures to accommodate
bit field changes made for CN10K platform.

This patch also removes Big endian bit fields from existing
structures as its support got deprecated in current and upcoming silicons.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-pf: cn10k: Add mbox support for CN10K
Subbaraya Sundeep [Thu, 11 Feb 2021 15:58:22 +0000 (21:28 +0530)]
octeontx2-pf: cn10k: Add mbox support for CN10K

Firmware allocates memory regions for PFs and VFs in DRAM.
The PFs memory region is used for AF-PF and PF-VF mailbox.
This mbox facilitate communication between AF-PF and PF-VF.

On CN10K platform:
The DRAM region allocated to PF is enumerated as PF BAR4 memory.
PF BAR4 contains AF-PF mbox region followed by its VFs mbox region.
AF-PF mbox region base address is configured at RVU_AF_PFX_BAR4_ADDR
PF-VF mailbox base address is configured at
RVU_PF(x)_VF_MBOX_ADDR = RVU_AF_PF()_BAR4_ADDR+64KB. PF access its
mbox region via BAR4, whereas VF accesses PF-VF DRAM mailboxes via
BAR2 indirect access.

On CN9XX platform:
Mailbox region in DRAM is divided into two parts AF-PF mbox region and
PF-VF mbox region i.e all PFs mbox region is contiguous similarly all
VFs.
The base address of the AF-PF mbox region is configured at
RVU_AF_PF_BAR4_ADDR.
AF-PF1 mbox address can be calculated as RVU_AF_PF_BAR4_ADDR * mbox
size.
The base address of PF-VF mbox region for each PF is configure at
RVU_AF_PF(0..15)_VF_BAR4_ADDR.PF access its mbox region via BAR4 and its
VF mbox regions from RVU_PF_VF_BAR4_ADDR register, whereas VF access its
mbox region via BAR4.

This patch changes mbox initialization to support both CN9XX and CN10K
platform.
The patch also adds new hw_cap flag to setting hw features like TSO etc
and removes platform specific name from the PF/VF driver name to make it
appropriate for all supported platforms

This patch also removes platform specific name from the PF/VF driver name
to make it appropriate for all supported platforms

Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-af: cn10k: Add mbox support for CN10K platform
Subbaraya Sundeep [Thu, 11 Feb 2021 15:58:21 +0000 (21:28 +0530)]
octeontx2-af: cn10k: Add mbox support for CN10K platform

Firmware allocates memory regions for PFs and VFs in DRAM.
The PFs memory region is used for AF-PF and PF-VF mailbox.
This mbox facilitates communication between AF-PF and PF-VF.

On CN10K platform:
The DRAM region allocated to PF is enumerated as PF BAR4 memory.
PF BAR4 contains AF-PF mbox region followed by its VFs mbox region.
AF-PF mbox region base address is configured at RVU_AF_PFX_BAR4_ADDR
PF-VF mailbox base address is configured at
RVU_PF(x)_VF_MBOX_ADDR = RVU_AF_PF()_BAR4_ADDR+64KB. PF access its
mbox region via BAR4, whereas VF accesses PF-VF DRAM mailboxes via
BAR2 indirect access.

On CN9XX platform:
Mailbox region in DRAM is divided into two parts AF-PF mbox region and
PF-VF mbox region i.e all PFs mbox region is contiguous similarly all
VFs.
The base address of the AF-PF mbox region is configured at
RVU_AF_PF_BAR4_ADDR.
AF-PF1 mbox address can be calculated as RVU_AF_PF_BAR4_ADDR * mbox
size.
The base address of PF-VF mbox region for each PF is configure at
RVU_AF_PF(0..15)_VF_BAR4_ADDR.PF access its mbox region via BAR4 and its
VF mbox regions from RVU_PF_VF_BAR4_ADDR register, whereas VF access its
mbox region via BAR4.

This patch changes mbox initialization to support both CN9XX and CN10K
platform.

This patch also adds CN10K PTP subsystem and device IDs to ptp
driver id table.

Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'mvpp2-tx-flow-control'
David S. Miller [Thu, 11 Feb 2021 22:50:24 +0000 (14:50 -0800)]
Merge branch 'mvpp2-tx-flow-control'

Stefan Chulski says:

====================
net: mvpp2: Add TX Flow Control support

Armada hardware has a pause generation mechanism in GOP (MAC).
The GOP generate flow control frames based on an indication programmed in Ports Control 0 Register. There is a bit per port.
However assertion of the PortX Pause bits in the ports control 0 register only sends a one time pause.
To complement the function the GOP has a mechanism to periodically send pause control messages based on periodic counters.
This mechanism ensures that the pause is effective as long as the Appropriate PortX Pause is asserted.

Problem is that Packet Processor that actually can drop packets due to lack of resources not connected to the GOP flow control generation mechanism.
To solve this issue Armada has firmware running on CM3 CPU dedicated for Flow Control support.
Firmware monitors Packet Processor resources and asserts XON/XOFF by writing to Ports Control 0 Register.

MSS shared SRAM memory used to communicate between CM3 firmware and PP2 driver.
During init PP2 driver informs firmware about used BM pools, RXQs, congestion and depletion thresholds.

The pause frames are generated whenever congestion or depletion in resources is detected.
The back pressure is stopped when the resource reaches a sufficient level.
So the congestion/depletion and sufficient level implement a hysteresis that reduces the XON/XOFF toggle frequency.

Packet Processor v23 hardware introduces support for RX FIFO fill level monitor.
Patch "add PPv23 version definition" to differ between v23 and v22 hardware.
Patch "add TX FC firmware check" verifies that CM3 firmware supports Flow Control monitoring.

v12 --> v13
- Remove bm_underrun_protect module_param

v11 --> v12
- Improve warning message in "net: mvpp2: add TX FC firmware check" patch

v10 --> v11
- Improve "net: mvpp2: add CM3 SRAM memory map" comment
- Move condition check to 'net: mvpp2: always compare hw-version vs MVPP21' patch

v9 --> v10
- Add CM3 SRAM description to PPv2 documentation

v8 --> v9
- Replace generic pool allocation with devm_ioremap_resource

v7 --> v8
- Reorder "always compare hw-version vs MVPP21" and "add PPv23 version definition" commits
- Typo fixes
- Remove condition fix from "add RXQ flow control configurations"

v6 --> v7
- Reduce patch set from 18 to 15 patches
 - Documentation change combined into a single patch
 - RXQ and BM size change combined into a single patch
 - Ring size change check moved into "add RXQ flow control configurations" commit

v5 --> v6
- No change

v4 --> v5
- Add missed Signed-off
- Fix warnings in patches 3 and 12
- Add revision requirement to warning message
- Move mss_spinlock into RXQ flow control configurations patch
- Improve FCA RXQ non occupied descriptor threshold commit message

v3 --> v4
- Remove RFC tag

v2 --> v3
- Remove inline functions
- Add PPv2.3 description into marvell-pp2.txt
- Improve mvpp2_interrupts_mask/unmask procedure
- Improve FC enable/disable procedure
- Add priv->sram_pool check
- Remove gen_pool_destroy call
- Reduce Flow Control timer to x100 faster

v1 --> v2
- Add memory requirements information
- Add EPROBE_DEFER if of_gen_pool_get return NULL
- Move Flow control configuration to mvpp2_mac_link_up callback
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: add TX FC firmware check
Stefan Chulski [Thu, 11 Feb 2021 10:49:02 +0000 (12:49 +0200)]
net: mvpp2: add TX FC firmware check

Patch check that TX FC firmware is running in CM3.
If not, global TX FC would be disabled.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: set 802.3x GoP Flow Control mode
Stefan Chulski [Thu, 11 Feb 2021 10:49:01 +0000 (12:49 +0200)]
net: mvpp2: set 802.3x GoP Flow Control mode

This patch fix GMAC TX flow control autoneg.
Flow control autoneg wrongly were disabled with enabled TX
flow control.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: add PPv23 RX FIFO flow control
Stefan Chulski [Thu, 11 Feb 2021 10:49:00 +0000 (12:49 +0200)]
net: mvpp2: add PPv23 RX FIFO flow control

New FIFO flow control feature was added in PPv23.
PPv2 FIFO polled by HW and trigger pause frame if FIFO
fill level is below threshold.
FIFO HW flow control enabled with CM3 RXQ&BM flow
control with ethtool.
Current  FIFO thresholds is:
9KB for port with maximum speed 10Gb/s port
4KB for port with maximum speed 5Gb/s port
2KB for port with maximum speed 1Gb/s port

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: add BM protection underrun feature support
Stefan Chulski [Thu, 11 Feb 2021 10:48:59 +0000 (12:48 +0200)]
net: mvpp2: add BM protection underrun feature support

The PP2v23 hardware supports a feature allowing to double the
size of BPPI by decreasing number of pools from 16 to 8.
Increasing of BPPI size protect BM drop from BPPI underrun.
Underrun could occurred due to stress on DDR and as result slow buffer
transition from BPPE to BPPI.
New BPPI threshold recommended by spec is:
BPPI low threshold - 640 buffers
BPPI high threshold - 832 buffers
Supported only in PPv23.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: add ethtool flow control configuration support
Stefan Chulski [Thu, 11 Feb 2021 10:48:58 +0000 (12:48 +0200)]
net: mvpp2: add ethtool flow control configuration support

This patch add ethtool flow control configuration support.

Tx flow control retrieved correctly by ethtool get function.
FW per port ethtool configuration capability added.

Patch also takes care about mtu change procedure, if PPv2 switch
BM pools during mtu change.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: add RXQ flow control configurations
Stefan Chulski [Thu, 11 Feb 2021 10:48:57 +0000 (12:48 +0200)]
net: mvpp2: add RXQ flow control configurations

This patch adds RXQ flow control configurations.
Flow control disabled by default.
Minimum ring size limited to 1024 descriptors.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: enable global flow control
Stefan Chulski [Thu, 11 Feb 2021 10:48:56 +0000 (12:48 +0200)]
net: mvpp2: enable global flow control

This patch enables global flow control in FW and in the phylink validate mask.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: add FCA RXQ non occupied descriptor threshold
Stefan Chulski [Thu, 11 Feb 2021 10:48:55 +0000 (12:48 +0200)]
net: mvpp2: add FCA RXQ non occupied descriptor threshold

The firmware needs to monitor the RX Non-occupied descriptor
bits for flow control to move to XOFF mode.
These bits need to be unmasked to be functional, but they will
not raise interrupts as we leave the RX exception summary
bit in MVPP2_ISR_RX_TX_MASK_REG clear.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: add FCA periodic timer configurations
Stefan Chulski [Thu, 11 Feb 2021 10:48:54 +0000 (12:48 +0200)]
net: mvpp2: add FCA periodic timer configurations

Flow Control periodic timer would be used if port in
XOFF to transmit periodic XOFF frames.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: increase BM pool and RXQ size
Stefan Chulski [Thu, 11 Feb 2021 10:48:53 +0000 (12:48 +0200)]
net: mvpp2: increase BM pool and RXQ size

BM pool and RXQ size increased to support Firmware Flow Control.
Minimum depletion thresholds to support FC are 1024 buffers.
BM pool size increased to 2048 to have some 1024 buffers
space between depletion thresholds and BM pool size.

Jumbo frames require a 9888B buffer, so memory requirements
for data buffers increased from 7MB to 24MB.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Reviewed-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: add PPv23 version definition
Stefan Chulski [Thu, 11 Feb 2021 10:48:52 +0000 (12:48 +0200)]
net: mvpp2: add PPv23 version definition

This patch add PPv23 version definition.
PPv23 is new packet processor in CP115.
Everything that supported by PPv22, also supported by PPv23.
No functional changes in this stage.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Reviewed-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: always compare hw-version vs MVPP21
Stefan Chulski [Thu, 11 Feb 2021 10:48:51 +0000 (12:48 +0200)]
net: mvpp2: always compare hw-version vs MVPP21

Currently we have PP2v1 and PP2v2 hw-versions, with some different
handlers depending upon condition hw_version = MVPP21/MVPP22.
In a future there will be also PP2v3. Let's use now the generic
"if equal/notEqual MVPP21" for all cases instead of "if MVPP22".

This patch does not change any functionality.
It is not intended to introduce PP2v3.
It just modifies MVPP21/MVPP22 check-condition
bringing it to generic and unified form correct for new-code
introducing and PP2v3 net-next generation.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: add CM3 SRAM memory map
Stefan Chulski [Thu, 11 Feb 2021 10:48:50 +0000 (12:48 +0200)]
net: mvpp2: add CM3 SRAM memory map

This patch adds CM3 memory map.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodts: marvell: add CM3 SRAM memory to cp11x ethernet device tree
Konstantin Porotchkin [Thu, 11 Feb 2021 10:48:49 +0000 (12:48 +0200)]
dts: marvell: add CM3 SRAM memory to cp11x ethernet device tree

CM3 SRAM address space will be used for Flow Control configuration.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodoc: marvell: add CM3 address space and PPv2.3 description
Stefan Chulski [Thu, 11 Feb 2021 10:48:48 +0000 (12:48 +0200)]
doc: marvell: add CM3 address space and PPv2.3 description

Patch adds CM3 address space and PPv2.3 description.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoxen/events: link interdomain events to associated xenbus device
Juergen Gross [Thu, 11 Feb 2021 10:16:13 +0000 (11:16 +0100)]
xen/events: link interdomain events to associated xenbus device

In order to support the possibility of per-device event channel
settings (e.g. lateeoi spurious event thresholds) add a xenbus device
pointer to struct irq_info() and modify the related event channel
binding interfaces to take the pointer to the xenbus device as a
parameter instead of the domain id of the other side.

While at it remove the stale prototype of bind_evtchn_to_irq_lateeoi().

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Reviewed-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Paul Durrant <paul@xen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoxen/netback: fix spurious event detection for common event case
Juergen Gross [Thu, 11 Feb 2021 10:16:12 +0000 (11:16 +0100)]
xen/netback: fix spurious event detection for common event case

In case of a common event for rx and tx queue the event should be
regarded to be spurious if no rx and no tx requests are pending.

Unfortunately the condition for testing that is wrong causing to
decide a event being spurious if no rx OR no tx requests are
pending.

Fix that plus using local variables for rx/tx pending indicators in
order to split function calls and if condition.

Fixes: 23025393dbeb3b ("xen/netback: use lateeoi irq binding")
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Reviewed-by: Wei Liu <wl@xen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: fib_notifier: don't return positive values on fib registration
Vlad Buslov [Thu, 11 Feb 2021 10:07:59 +0000 (12:07 +0200)]
net: fib_notifier: don't return positive values on fib registration

The function fib6_walk_continue() cannot return a positive value when
called from register_fib_notifier(), but ignoring causes static analyzer to
generate warnings in users of register_fib_notifier() that try to convert
returned error code to pointer with ERR_PTR(). Handle such case by
explicitly checking for positive error values and converting them to
-EINVAL in fib6_tables_dump().

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Suggested-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge tag 'mlx5-for-upstream-2021-02-10' of git://git.kernel.org/pub/scm/linux/kernel...
David S. Miller [Thu, 11 Feb 2021 22:40:25 +0000 (14:40 -0800)]
Merge tag 'mlx5-for-upstream-2021-02-10' of git://git./linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5-for-upstream-2021-02-10

Misc cleanups and trivial fixes for net-next

1) spelling mistakes
2) error path checks fixes
3) unused includes and struct fields cleanup
4) build error when MLX5_ESWITCH=no
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ipconfig: avoid use-after-free in ic_close_devs
Vladimir Oltean [Wed, 10 Feb 2021 23:57:03 +0000 (01:57 +0200)]
net: ipconfig: avoid use-after-free in ic_close_devs

Due to the fact that ic_dev->dev is kept open in ic_close_dev, I had
thought that ic_dev will not be freed either. But that is not the case,
but instead "everybody dies" when ipconfig cleans up, and just the
net_device behind ic_dev->dev remains allocated but not ic_dev itself.

This is a problem because in ic_close_devs, for every net device that
we're about to close, we compare it against the list of lower interfaces
of ic_dev, to figure out whether we should close it or not. But since
ic_dev itself is subject to freeing, this means that at some point in
the middle of the list of ipconfig interfaces, ic_dev will have been
freed, and we would be still attempting to iterate through its list of
lower interfaces while checking whether to bring down the remaining
ipconfig interfaces.

There are multiple ways to avoid the use-after-free: we could delay
freeing ic_dev until the very end (outside the while loop). Or an even
simpler one: we can observe that we don't need ic_dev when iterating
through its lowers, only ic_dev->dev, structure which isn't ever freed.
So, by keeping ic_dev->dev in a variable assigned prior to freeing
ic_dev, we can avoid all use-after-free issues.

Fixes: 46acf7bdbc72 ("Revert "net: ipv4: handle DSA enabled master network devices"")
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agor8169: disable detection of bogus xid's 308/388
Heiner Kallweit [Wed, 10 Feb 2021 21:45:51 +0000 (22:45 +0100)]
r8169: disable detection of bogus xid's 308/388

Several years ago these two entries have been added, but it's not clear
why. There's no trace that there has ever been such a chip version, and
not even the r8101 vendor driver knows these id's. So let's disable
detection, and if nobody complains remove them completely later.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'bond-3ad-200g-400g'
David S. Miller [Thu, 11 Feb 2021 22:28:21 +0000 (14:28 -0800)]
Merge branch 'bond-3ad-200g-400g'

Nikolay Aleksandrov says:

====================
bonding: 3ad: support for 200G/400G ports and more verbose warning
xk
We'd like to have proper 200G and 400G support with 3ad bond mode, so we
need to add new definitions for them in order to have separate oper keys,
aggregated bandwidth and proper operation (patches 01 and 02). In
patch 03 Ido changes the code to use pr_err_once instead of
pr_warn_once which would help future detection of unsupported speeds.

v2: patch 03: use pr_err_once instead of WARN_ONCE
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobonding: 3ad: Print an error for unknown speeds
Ido Schimmel [Wed, 10 Feb 2021 20:43:33 +0000 (22:43 +0200)]
bonding: 3ad: Print an error for unknown speeds

The bond driver needs to be patched to support new ethtool speeds.
Currently it emits a single warning [1] when it encounters an unknown
speed. As evident by the two previous patches, this is not explicit
enough. Instead, promote it to an error.

[1]
bond10: (slave swp1): unknown ethtool speed (200000) for port 1 (set it to 0)

v2:
* Use pr_err_once() instead of WARN_ONCE()

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobonding: 3ad: add support for 400G speed
Nikolay Aleksandrov [Wed, 10 Feb 2021 20:43:32 +0000 (22:43 +0200)]
bonding: 3ad: add support for 400G speed

In order to be able to use 3ad mode with 400G devices we need to extend
the supported speeds.

Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobonding: 3ad: add support for 200G speed
Nikolay Aleksandrov [Wed, 10 Feb 2021 20:43:31 +0000 (22:43 +0200)]
bonding: 3ad: add support for 200G speed

In order to be able to use 3ad mode with 200G devices we need to extend
the supported speeds.

Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'qede-netpoll-coalesce'
David S. Miller [Thu, 11 Feb 2021 22:25:06 +0000 (14:25 -0800)]
Merge branch 'qede-netpoll-coalesce'

Bhaskar Upadhaya says:

====================
qede: add netpoll and per-queue coalesce support

This is a followup implementation after series

https://patchwork.kernel.org/project/netdevbpf/cover/1610701570-29496-1-git-send-email-bupadhaya@marvell.com/

Patch 1: Add net poll controller support to transmit kernel printks
         over UDP
Patch 2: QLogic card support multiple queues and each queue can be
         configured with respective coalescing parameters, this patch
         add per queue rx-usecs, tx-usecs coalescing parameters
Patch 3: set default per queue rx-usecs, tx-usecs coalescing parameters and
         preserve coalesce parameters across interface up and down

v3: fixed warnings reported by Dan Carpenter
v2: comments from jakub
 - p1: remove poll_controller ndo and add budget 0 support in qede_poll
 - p3: preserve coalesce parameters across interface up and down
===================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoqede: preserve per queue stats across up/down of interface
Bhaskar Upadhaya [Wed, 10 Feb 2021 20:28:31 +0000 (12:28 -0800)]
qede: preserve per queue stats across up/down of interface

Here we do the initialization of coalescing values on load.
per queue coalesce values are also restored across up/down of
ethernet interface.

Signed-off-by: Bhaskar Upadhaya <bupadhaya@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoqede: add per queue coalesce support for qede driver
Bhaskar Upadhaya [Wed, 10 Feb 2021 20:28:30 +0000 (12:28 -0800)]
qede: add per queue coalesce support for qede driver

per queue coalescing allows better and more finegrained control
over interrupt rates.

Signed-off-by: Bhaskar Upadhaya <bupadhaya@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoqede: add netpoll support for qede driver
Bhaskar Upadhaya [Wed, 10 Feb 2021 20:28:29 +0000 (12:28 -0800)]
qede: add netpoll support for qede driver

handle netpoll case when qede_poll is called by
netpoll layer with budget 0

Signed-off-by: Bhaskar Upadhaya <bupadhaya@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: fix return of random stack value
Gustavo A. R. Silva [Wed, 10 Feb 2021 19:28:41 +0000 (13:28 -0600)]
net: hns3: fix return of random stack value

Currently, a random stack value is being returned because variable
_ret_ is not properly initialized. This variable is actually not
used anymore and it should be removed.

Fix this by removing all instances of variable ret and return 0.

Fixes: 64749c9c38a9 ("net: hns3: remove redundant return value of hns3_uninit_all_ring()")
Addresses-Coverity-ID: 1501700 ("Uninitialized scalar variable")
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: stmmac: dwmac-intel-plat: remove unnecessary initialization
Nobuhiro Iwamatsu [Wed, 10 Feb 2021 17:59:35 +0000 (02:59 +0900)]
net: stmmac: dwmac-intel-plat: remove unnecessary initialization

plat_dat is initialized by stmmac_probe_config_dt().
So, initialization is not required by priv->plat.
This removes unnecessary initialization and variables.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: initialize net->net_cookie at netns setup
Eric Dumazet [Wed, 10 Feb 2021 14:41:44 +0000 (06:41 -0800)]
net: initialize net->net_cookie at netns setup

It is simpler to make net->net_cookie a plain u64
written once in setup_net() instead of looping
and using atomic64 helpers.

Lorenz Bauer wants to add SO_NETNS_COOKIE socket option
and this patch would makes his patch series simpler.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Lorenz Bauer <lmb@cloudflare.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agor8169: re-configure WOL settings on resume from hibernation
Heiner Kallweit [Wed, 10 Feb 2021 14:33:20 +0000 (15:33 +0100)]
r8169: re-configure WOL settings on resume from hibernation

So far we don't re-configure WOL-related register bits when waking up
from hibernation. I'm not aware of any problem reports, but better
play safe and call __rtl8169_set_wol() in the resume() path too.
To achieve this move calling __rtl8169_set_wol() to
rtl8169_net_resume() and rename the function to rtl8169_runtime_resume().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'phy-icplus-next'
David S. Miller [Thu, 11 Feb 2021 21:53:26 +0000 (13:53 -0800)]
Merge branch 'phy-icplus-next'

Michael Walle says:

====================
net: phy: icplus: cleanups and new features

Cleanup the PHY drivers for IPplus devices and add PHY counters and MDIX
support for the IP101A/G.

Patch 5 adds a model detection based on the behavior of the PHY.
Unfortunately, the IP101A shares the PHY ID with the IP101G. But the latter
provides more features. Try to detect the newer model by accessing the page
selection register. If it is writeable, it is assumed, that it is a IP101G.

With this detection in place, we can now access registers >= 16 in a
correct way on the IP101G; that is by first selecting the correct page.
This might previouly worked, because no one ever set another active page
before booting linux.

The last two patches add the new features.
===================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: icplus: add MDI/MDIX support for IP101A/G
Michael Walle [Thu, 11 Feb 2021 07:47:50 +0000 (08:47 +0100)]
net: phy: icplus: add MDI/MDIX support for IP101A/G

Implement the operations to set desired mode and retrieve the current
mode.

This feature was tested with an IP101G.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: icplus: add PHY counter for IP101G
Michael Walle [Thu, 11 Feb 2021 07:47:49 +0000 (08:47 +0100)]
net: phy: icplus: add PHY counter for IP101G

The IP101G provides three counters: RX packets, CRC errors and symbol
errors. The error counters can be configured to clear automatically on
read. Unfortunately, this isn't true for the RX packet counter. Because
of this and because the RX packet counter is more likely to overflow,
than the error counters implement only support for the error counters.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: icplus: fix paged register access
Michael Walle [Thu, 11 Feb 2021 07:47:48 +0000 (08:47 +0100)]
net: phy: icplus: fix paged register access

Registers >= 16 are paged. Be sure to set the page. It seems this was
working for now, because the default is correct for the registers used
in the driver at the moment. But this will also assume, nobody will
change the page select register before linux is started. The page select
register is _not_ reset with a soft reset of the PHY.

To ease the function reuse between the non-paged register space of the
IP101A and the IP101G, add noop read_page()/write_page() callbacks so
the IP101G functions can also be used for the IP101A.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: icplus: don't set APS_EN bit on IP101G
Michael Walle [Thu, 11 Feb 2021 07:47:47 +0000 (08:47 +0100)]
net: phy: icplus: don't set APS_EN bit on IP101G

This bit is reserved as 'always-write-1'. While this is not a particular
error, because we are only setting it, guard it by checking the model to
prevent errors in the future.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: icplus: split IP101A/G driver
Michael Walle [Thu, 11 Feb 2021 07:47:46 +0000 (08:47 +0100)]
net: phy: icplus: split IP101A/G driver

Unfortunately, the IP101A and IP101G share the same PHY identifier.
While most of the functions are somewhat backwards compatible, there is
for example the APS_EN bit on the IP101A but on the IP101G this bit
reserved. Also, the IP101G has many more functionalities.

Deduce the model by accessing the page select register which - according
to the datasheet - is not available on the IP101A. If this register is
writable, assume we have an IP101G.

Split the combined IP101A/G driver into two separate drivers.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: icplus: use the .soft_reset() of the phy-core
Michael Walle [Thu, 11 Feb 2021 07:47:45 +0000 (08:47 +0100)]
net: phy: icplus: use the .soft_reset() of the phy-core

The PHY core already resets the PHY before .config_init() if a
.soft_reset() op is registered. Drop the open-coded ip1xx_reset().

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: icplus: drop address operator for functions
Michael Walle [Thu, 11 Feb 2021 07:47:44 +0000 (08:47 +0100)]
net: phy: icplus: drop address operator for functions

Don't sometimes use the address operator and sometimes not. Drop it and
make the code look uniform.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: icplus: use PHY_ID_MATCH_EXACT() for IP101A/G
Michael Walle [Thu, 11 Feb 2021 07:47:43 +0000 (08:47 +0100)]
net: phy: icplus: use PHY_ID_MATCH_EXACT() for IP101A/G

According to the datasheet of the IP101A/G there is no revision field
and MII_PHYSID2 always reads as 0x0c54. Use PHY_ID_MATCH_EXACT() then.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: icplus: use PHY_ID_MATCH_MODEL() macro
Michael Walle [Thu, 11 Feb 2021 07:47:42 +0000 (08:47 +0100)]
net: phy: icplus: use PHY_ID_MATCH_MODEL() macro

Simpify the initializations of the structures. There is no functional
change.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'dsa-hsr-offload'
David S. Miller [Thu, 11 Feb 2021 21:24:45 +0000 (13:24 -0800)]
Merge branch 'dsa-hsr-offload'

George McCollister says:

====================
add HSR offloading support for DSA switches

Add support for offloading HSR/PRP (IEC 62439-3) tag insertion, tag
removal, forwarding and duplication on DSA switches.
This series adds offloading to the xrs700x DSA driver.

Changes since RFC:
 * Split hsr and dsa patches. (Florian Fainelli)

Changes since v1:
 * Fixed some typos/wording. (Vladimir Oltean)
 * eliminate IFF_HSR and use is_hsr_master instead. (Vladimir Oltean)
 * Make hsr_handle_sup_frame handle skb_std as well (required when offloading)
 * Don't add hsr tag for HSR v0 supervisory frames.
 * Fixed tag insertion offloading for PRP.

Changes since v2:
 * Return -EOPNOTSUPP instead of 0 in dsa_switch_hsr_join and
   dsa_switch_hsr_leave. (Vladimir Oltean)
 * Only allow ports 1 and 2 to be HSR/PRP redundant ports. (Tobias Waldekranz)
 * Set and remove HSR features for both redundant ports. (Vladimir Oltean)
 * Change port_hsr_leave() to return int instead of void.
 * Remove hsr_init_skb() proto argument. (Vladimir Oltean)
===================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: xrs700x: add HSR offloading support
George McCollister [Wed, 10 Feb 2021 01:02:13 +0000 (19:02 -0600)]
net: dsa: xrs700x: add HSR offloading support

Add offloading for HSR/PRP (IEC 62439-3) tag insertion, tag removal
forwarding and duplication supported by the xrs7000 series switches.

Only HSR v1 and PRP v1 are supported by the xrs7000 series switches (HSR
v0 is not).

Signed-off-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: add support for offloading HSR
George McCollister [Wed, 10 Feb 2021 01:02:12 +0000 (19:02 -0600)]
net: dsa: add support for offloading HSR

Add support for offloading of HSR/PRP (IEC 62439-3) tag insertion
tag removal, duplicate generation and forwarding on DSA switches.

Add DSA_NOTIFIER_HSR_JOIN and DSA_NOTIFIER_HSR_LEAVE which trigger calls
to .port_hsr_join and .port_hsr_leave in the DSA driver for the switch.

The DSA switch driver should then set netdev feature flags for the
HSR/PRP operation that it offloads.
    NETIF_F_HW_HSR_TAG_INS
    NETIF_F_HW_HSR_TAG_RM
    NETIF_F_HW_HSR_FWD
    NETIF_F_HW_HSR_DUP

Signed-off-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hsr: add offloading support
George McCollister [Wed, 10 Feb 2021 01:02:11 +0000 (19:02 -0600)]
net: hsr: add offloading support

Add support for offloading of HSR/PRP (IEC 62439-3) tag insertion
tag removal, duplicate generation and forwarding.

For HSR, insertion involves the switch adding a 6 byte HSR header after
the 14 byte Ethernet header. For PRP it adds a 6 byte trailer.

Tag removal involves automatically stripping the HSR/PRP header/trailer
in the switch. This is possible when the switch also performs auto
deduplication using the HSR/PRP header/trailer (making it no longer
required).

Forwarding involves automatically forwarding between redundant ports in
an HSR. This is crucial because delay is accumulated as a frame passes
through each node in the ring.

Duplication involves the switch automatically sending a single frame
from the CPU port to both redundant ports. This is required because the
inserted HSR/PRP header/trailer must contain the same sequence number
on the frames sent out both redundant ports.

Export is_hsr_master so DSA can tell them apart from other devices in
dsa_slave_changeupper.

Signed-off-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hsr: generate supervision frame without HSR/PRP tag
George McCollister [Wed, 10 Feb 2021 01:02:10 +0000 (19:02 -0600)]
net: hsr: generate supervision frame without HSR/PRP tag

For a switch to offload insertion of HSR/PRP tags, frames must not be
sent to the CPU facing switch port with a tag. Generate supervision frames
(eth type ETH_P_PRP) without HSR v1 (ETH_P_HSR)/PRP tag and rely on
create_tagged_frame which inserts it later. This will allow skipping the
tag insertion for all outgoing frames in the future which is required for
HSR v1/PRP tag insertions to be offloaded.

HSR v0 supervision frames always contain tag information so insertion of
the tag can't be offloaded. IEC 62439-3 Ed.2.0 (HSR v1) specifically
notes that this was changed since v0 to allow offloading.

Signed-off-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>