Now that devlink regions can be triggered via
DEVLINK_CMD_REGION_TRIGGER, document this in the devlink-region.rst
file.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Primarily based on the DPIPE netdev conference paper, introduce a new
file to document the dpipe interface.
This likely needs further improvement, but is at least a good overall
start.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Take the little bit of documentation for resources from various commit
messages and combine it into a new devlink-resource.rst file.
This could probably be expanded on even further by someone with more
knowledge of how the devlink resources work.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rename the trap-specific netdevimsim.rst file, and expand it to include
documentation of all the devlink features currently implemented by the
netdevsim driver code.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Cc: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The IONIC device driver allocates a devlink and reports versions. Add
documentation for this driver.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Cc: Shannon Nelson <snelson@pensando.io>
Acked-by: Shannon Nelson <snelson@pensandi.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Also document the regions created by the mlx4 driver. This is currently
the only in-tree driver that creates devlink region snapshots.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Cc: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The qed driver recently added devlink support with a single devlink
parameter. Add a driver-specific file to document the devlink features
that the qed driver supports.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Cc: Ariel Elior <aelior@marvell.com>
Cc: GR-everest-linux-l2@marvell.com
Signed-off-by: David S. Miller <davem@davemloft.net>
The mlx5 and mlxsw drivers have driver-specific documentation for the
devlink features they support. No such file was added for mlx4.
Add a file to document the mlx4 devlink support. Initially it contains
only the devlink parameters.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Cc: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add the set of info versions reported by each device driver, including
a description of what the version represents, and what modes (fixed,
running, stored) it reports.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Cc: Tariq Toukan <tariqt@mellanox.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Cc: Leon Romanovsky <leonro@mellanox.com>
Cc: Michael Chan <michael.chan@broadcom.com>
Cc: Jiri Pirko <jiri@mellanox.com>
Cc: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Several drivers document what parameters they support in
a devlink-params-*.txt file. This file is supposed to contain both the
list of generic parameters implemented by the driver, as well as a list
of driver-specific parameters and their descriptions.
It would also be good if the driver documentation included other
driver-specific implementations, such as info versions, devlink
regions, and so forth.
Convert all of these documentation files to reStructuredText, and rename
them to just the driver name. Future changes will include other
driver-specific implementations. Each file will contain a table for the
generic parameters implemented, as well as a separate table for the
driver-specific parameters.
Future sections such as for devlink info versions will be added to these
files. This avoids creating additional devlink-<feature>-<driver> files
for each devlink feature, reducing clutter in the documentation folder.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Cc: Tariq Toukan <tariqt@mellanox.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Cc: Leon Romanovsky <leonro@mellanox.com>
Cc: Michael Chan <michael.chan@broadcom.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Vivien Didelot <vivien.didelot@gmail.com>
Cc: Jiri Pirko <jiri@mellanox.com>
Cc: Ido Schimmel <idosch@mellanox.com>
Cc: Jakub Kicinski <jakub.kicinski@netronome.com>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mention that drivers must support devlink-reload in order for driverinit
parameters to function properly
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
A few generic devlink parameters have been added, but never documented.
Fix that now.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Convert the generic parameters descriptions into the reStructuredText
format.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rename the devlink-info-versions.rst file to a plain devlink-info.rst
file. Add additional paragraphs explaining what devlink-info is for,
and the expectation that drivers use the generic names where plausible.
Note that drivers which use non-standard info version names ought to
document these in a driver-specific info-versions.rst file.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Update the devlink-health documentation to use the newer
ReStructuredText format.
Note that it's unclear what OOB stood for, and it has been left as-is
without a proper first-use expansion of the acronym.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Combine the documentation for devlink into a subfolder, and provide an
index.rst file that can be used to generally describe devlink.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The ungrafting from PRIO bug fixes in net, when merged into net-next,
merge cleanly but create a build failure. The resolution used here is
from Petr Machata.
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull networking fixes from David Miller:
1) Missing netns pointer init in arp_tables, from Florian Westphal.
2) Fix normal tcp SACK being treated as D-SACK, from Pengcheng Yang.
3) Fix divide by zero in sch_cake, from Wen Yang.
4) Len passed to skb_put_padto() is wrong in qrtr code, from Carl
Huang.
5) cmd->obj.chunk is leaked in sctp code error paths, from Xin Long.
6) cgroup bpf programs can be released out of order, fix from Roman
Gushchin.
7) Make sure stmmac debugfs entry name is changed when device name
changes, from Jiping Ma.
8) Fix memory leak in vlan_dev_set_egress_priority(), from Eric
Dumazet.
9) SKB leak in lan78xx usb driver, also from Eric Dumazet.
10) Ridiculous TCA_FQ_QUANTUM values configured can cause loops in fq
packet scheduler, reject them. From Eric Dumazet.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (69 commits)
tipc: fix wrong connect() return code
tipc: fix link overflow issue at socket shutdown
netfilter: ipset: avoid null deref when IPSET_ATTR_LINENO is present
netfilter: conntrack: dccp, sctp: handle null timeout argument
atm: eni: fix uninitialized variable warning
macvlan: do not assume mac_header is set in macvlan_broadcast()
net: sch_prio: When ungrafting, replace with FIFO
mlxsw: spectrum_qdisc: Ignore grafting of invisible FIFO
MAINTAINERS: Remove myself as co-maintainer for qcom-ethqos
gtp: fix bad unlock balance in gtp_encap_enable_socket
pkt_sched: fq: do not accept silly TCA_FQ_QUANTUM
tipc: remove meaningless assignment in Makefile
tipc: do not add socket.o to tipc-y twice
net: stmmac: dwmac-sun8i: Allow all RGMII modes
net: stmmac: dwmac-sunxi: Allow all RGMII modes
net: usb: lan78xx: fix possible skb leak
net: stmmac: Fixed link does not need MDIO Bus
vlan: vlan_changelink() should propagate errors
vlan: fix memory leak in vlan_dev_set_egress_priority
stmmac: debugfs entry name is not be changed when udev rename device name.
...
Convert the documentation of the driver to RST format and delete the old
txt and old information that no longer applies.
Also, add some new information.
Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
A small collection of fixes here, one to make the newly added PTP
timestamping code more accurate, a few driver fixes and a fix for the
core DT binding to document the fact that we support eight wire buses.
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Merge tag 'spi-fix-v5.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A small collection of fixes here, one to make the newly added PTP
timestamping code more accurate, a few driver fixes and a fix for the
core DT binding to document the fact that we support eight wire buses"
* tag 'spi-fix-v5.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: Document Octal mode as valid SPI bus width
spi: spi-dw: Add lock protect dw_spi rx/tx to prevent concurrent calls
spi: spi-fsl-dspi: Fix 16-bit word order in 32-bit XSPI mode
spi: Don't look at TX buffer for PTP system timestamping
spi: uniphier: Fix FIFO threshold
Some MAC PCS blocks are unable to provide interrupts when their status
changes. As we already have support in phylink for polling status, use
this to provide a hook for MACs to enable polling mode.
The patch idea was picked up from Russell King's suggestion on the macb
phylink patch thread here [0] but the implementation was changed.
Instead of introducing a new phylink_start_poll() function, which would
make the implementation cumbersome for common PHYLINK implementations
for multiple types of devices, like DSA, just add a boolean property to
the phylink_config structure, which is just as backwards-compatible.
https://lkml.org/lkml/2019/12/16/603
Suggested-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Recent discussion has revealed that the use of PHY_INTERFACE_MODE_10GKR
is incorrect. Add a 10GBASE-R definition, document both the -R and -KR
versions, and the fact that 10GKR was used incorrectly.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Several fixes for RISC-V:
- Fix function graph trace support
- Prefix the CSR IRQ_* macro names with "RV_", to avoid collisions
with macros elsewhere in the Linux kernel tree named "IRQ_TIMER"
- Use __pa_symbol() when computing the physical address of a kernel
symbol, rather than __pa()
- Mark the RISC-V port as supporting GCOV
One DT addition:
- Describe the L2 cache controller in the FU540 DT file
One documentation update:
- Add patch acceptance guideline documentation
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Merge tag 'riscv/for-v5.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Paul Walmsley:
"Several fixes for RISC-V:
- Fix function graph trace support
- Prefix the CSR IRQ_* macro names with "RV_", to avoid collisions
with macros elsewhere in the Linux kernel tree named "IRQ_TIMER"
- Use __pa_symbol() when computing the physical address of a kernel
symbol, rather than __pa()
- Mark the RISC-V port as supporting GCOV
One DT addition:
- Describe the L2 cache controller in the FU540 DT file
One documentation update:
- Add patch acceptance guideline documentation"
* tag 'riscv/for-v5.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
Documentation: riscv: add patch acceptance guidelines
riscv: prefix IRQ_ macro names with an RV_ namespace
clocksource: riscv: add notrace to riscv_sched_clock
riscv: ftrace: correct the condition logic in function graph tracer
riscv: dts: Add DT support for SiFive L2 cache controller
riscv: gcov: enable gcov for RISC-V
riscv: mm: use __pa_symbol for kernel symbols
Formalize, in kernel documentation, the patch acceptance policy for
arch/riscv. In summary, it states that as maintainers, we plan to
only accept patches for new modules or extensions that have been
frozen or ratified by the RISC-V Foundation.
We've been following these guidelines for the past few months. In the
meantime, we've received quite a bit of feedback that it would be
helpful to have these guidelines formally documented.
Based on a suggestion from Matthew Wilcox, we also add a link to this
file to Documentation/process/index.rst, to make this document easier
to find. The format of this document has also been changed to align
to the format outlined in the maintainer entry profiles, in accordance
with comments from Jon Corbet and Dan Williams.
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Krste Asanovic <krste@berkeley.edu>
Cc: Andrew Waterman <waterman@eecs.berkeley.edu>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Make the layout of kcov_remote_arg the same for 32-bit and 64-bit code.
This makes it more convenient to write userspace apps that can be
compiled into 32-bit or 64-bit binaries and still work with the same
64-bit kernel.
Also use proper __u32 types in uapi headers instead of unsigned ints.
Link: http://lkml.kernel.org/r/9e91020876029cfefc9211ff747685eba9536426.1575638983.git.andreyknvl@google.com
Fixes: eec028c938 ("kcov: remote coverage support")
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Marco Elver <elver@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Felipe Balbi <balbi@kernel.org>
Cc: Chunfeng Yun <chunfeng.yun@mediatek.com>
Cc: "Jacky . Cao @ sony . com" <Jacky.Cao@sony.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Marco Elver <elver@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
DaveM's git tree have been moved into a named subdir 'netdev' to deal with
allowing Jakub Kicinski to help co-maintain the trees.
Link: https://www.kernel.org/doc/html/latest/networking/netdev-FAQ.html
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch enables GCOV code coverage measurement on RISC-V.
Lightly tested on QEMU and Hifive Unleashed board, seems to work as
expected.
Signed-off-by: Zong Li <zong.li@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
SPI core supports Octal SPI controllers which have 8 IO lines.
Therefore document 8 as a valid option for spi-tx{rx}-bus-width
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Link: https://lore.kernel.org/r/20200102102118.23318-1-vigneshr@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Pull networking fixes from David Miller:
1) Fix big endian overflow in nf_flow_table, from Arnd Bergmann.
2) Fix port selection on big endian in nft_tproxy, from Phil Sutter.
3) Fix precision tracking for unbound scalars in bpf verifier, from
Daniel Borkmann.
4) Fix integer overflow in socket rcvbuf check in UDP, from Antonio
Messina.
5) Do not perform a neigh confirmation during a pmtu update over a
tunnel, from Hangbin Liu.
6) Fix DMA mapping leak in dpaa_eth driver, from Madalin Bucur.
7) Various PTP fixes for sja1105 dsa driver, from Vladimir Oltean.
8) Add missing to dummy definition of of_mdiobus_child_is_phy(), from
Geert Uytterhoeven
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (54 commits)
hsr: fix slab-out-of-bounds Read in hsr_debugfs_rename()
net/sched: add delete_empty() to filters and use it in cls_flower
tcp: Fix highest_sack and highest_sack_seq
ptp: fix the race between the release of ptp_clock and cdev
net: dsa: sja1105: Reconcile the meaning of TPID and TPID2 for E/T and P/Q/R/S
Documentation: net: dsa: sja1105: Remove text about taprio base-time limitation
net: dsa: sja1105: Remove restriction of zero base-time for taprio offload
net: dsa: sja1105: Really make the PTP command read-write
net: dsa: sja1105: Take PTP egress timestamp by port, not mgmt slot
cxgb4/cxgb4vf: fix flow control display for auto negotiation
mlxsw: spectrum: Use dedicated policer for VRRP packets
mlxsw: spectrum_router: Skip loopback RIFs during MAC validation
net: stmmac: dwmac-meson8b: Fix the RGMII TX delay on Meson8b/8m2 SoCs
net/sched: act_mirred: Pull mac prior redir to non mac_header_xmit device
net_sched: sch_fq: properly set sk->sk_pacing_status
bnx2x: Fix accounting of vlan resources among the PFs
bnx2x: Use appropriate define for vlan credit
of: mdio: Add missing inline to of_mdiobus_child_is_phy() dummy
net: phy: aquantia: add suspend / resume ops for AQR105
dpaa_eth: fix DMA mapping leak
...
Since commit 86db36a347 ("net: dsa: sja1105: Implement state machine
for TAS with PTP clock source"), this paragraph is no longer true. So
remove it.
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement LINKSTATE_GET netlink request to get link state information.
At the moment, only link up flag as provided by ETHTOOL_GLINK ioctl command
is returned.
LINKSTATE_GET request can be used with NLM_F_DUMP (without device
identification) to request the information for all devices in current
network namespace providing the data.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Send ETHTOOL_MSG_LINKMODES_NTF notification message whenever device link
settings or advertised modes are modified using ETHTOOL_MSG_LINKMODES_SET
netlink message or ETHTOOL_SLINKSETTINGS or ETHTOOL_SSET ioctl commands.
The notification message has the same format as reply to LINKMODES_GET
request. ETHTOOL_MSG_LINKMODES_SET netlink request only triggers the
notification if there is a change but the ioctl command handlers do not
check if there is an actual change and trigger the notification whenever
the commands are executed.
As all work is done by ethnl_default_notify() handler and callback
functions introduced to handle LINKMODES_GET requests, all that remains is
adding entries for ETHTOOL_MSG_LINKMODES_NTF into ethnl_notify_handlers and
ethnl_default_notify_ops lookup tables and calls to ethtool_notify() where
needed.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement LINKMODES_SET netlink request to set advertised linkmodes and
related attributes as ETHTOOL_SLINKSETTINGS and ETHTOOL_SSET commands do.
The request allows setting autonegotiation flag, speed, duplex and
advertised link modes.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement LINKMODES_GET netlink request to get link modes related
information provided by ETHTOOL_GLINKSETTINGS and ETHTOOL_GSET ioctl
commands.
This request provides supported, advertised and peer advertised link modes,
autonegotiation flag, speed and duplex.
LINKMODES_GET request can be used with NLM_F_DUMP (without device
identification) to request the information for all devices in current
network namespace providing the data.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Send ETHTOOL_MSG_LINKINFO_NTF notification message whenever device link
settings are modified using ETHTOOL_MSG_LINKINFO_SET netlink message or
ETHTOOL_SLINKSETTINGS or ETHTOOL_SSET ioctl commands.
The notification message has the same format as reply to LINKINFO_GET
request. ETHTOOL_MSG_LINKINFO_SET netlink request only triggers the
notification if there is a change but the ioctl command handlers do not
check if there is an actual change and trigger the notification whenever
the commands are executed.
As all work is done by ethnl_default_notify() handler and callback
functions introduced to handle LINKINFO_GET requests, all that remains is
adding entries for ETHTOOL_MSG_LINKINFO_NTF into ethnl_notify_handlers and
ethnl_default_notify_ops lookup tables and calls to ethtool_notify() where
needed.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement LINKINFO_SET netlink request to set link settings queried by
LINKINFO_GET message.
Only physical port, phy MDIO address and MDI(-X) control can be set,
attempt to modify MDI(-X) status and transceiver is rejected.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement LINKINFO_GET netlink request to get basic link settings provided
by ETHTOOL_GLINKSETTINGS and ETHTOOL_GSET ioctl commands.
This request provides settings not directly related to autonegotiation and
link mode selection: physical port, phy MDIO address, MDI(-X) status,
MDI(-X) control and transceiver.
LINKINFO_GET request can be used with NLM_F_DUMP (without device
identification) to request the information for all devices in current
network namespace providing the data.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Requests a contents of one or more string sets, i.e. indexed arrays of
strings; this information is provided by ETHTOOL_GSSET_INFO and
ETHTOOL_GSTRINGS commands of ioctl interface. Unlike ioctl interface, all
information can be retrieved with one request and mulitple string sets can
be requested at once.
There are three types of requests:
- no NLM_F_DUMP, no device: get "global" stringsets
- no NLM_F_DUMP, with device: get string sets related to the device
- NLM_F_DUMP, no device: get device related string sets for all devices
Client can request either all string sets of given type (global or device
related) or only specific sets. With ETHTOOL_A_STRSET_COUNTS flag set, only
set sizes (numbers of strings) are returned.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The ethtool netlink code uses common framework for passing arbitrary
length bit sets to allow future extensions. A bitset can be a list (only
one bitmap) or can consist of value and mask pair (used e.g. when client
want to modify only some bits). A bitset can use one of two formats:
verbose (bit by bit) or compact.
Verbose format consists of bitset size (number of bits), list flag and
an array of bit nests, telling which bits are part of the list or which
bits are in the mask and which of them are to be set. In requests, bits
can be identified by index (position) or by name. In replies, kernel
provides both index and name. Verbose format is suitable for "one shot"
applications like standard ethtool command as it avoids the need to
either keep bit names (e.g. link modes) in sync with kernel or having to
add an extra roundtrip for string set request (e.g. for private flags).
Compact format uses one (list) or two (value/mask) arrays of 32-bit
words to store the bitmap(s). It is more suitable for long running
applications (ethtool in monitor mode or network management daemons)
which can retrieve the names once and then pass only compact bitmaps to
save space.
Userspace requests can use either format; ETHTOOL_FLAG_COMPACT_BITSETS
flag in request header tells kernel which format to use in reply.
Notifications always use compact format.
As some code uses arrays of unsigned long for internal representation and
some arrays of u32 (or even a single u32), two sets of parse/compose
helpers are introduced. To avoid code duplication, helpers for unsigned
long arrays are implemented as wrappers around helpers for u32 arrays.
There are two reasons for this choice: (1) u32 arrays are more frequent in
ethtool code and (2) unsigned long array can be always interpreted as an
u32 array on little endian 64-bit and all 32-bit architectures while we
would need special handling for odd number of u32 words in the opposite
direction.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Basic genetlink and init infrastructure for the netlink interface, register
genetlink family "ethtool". Add CONFIG_ETHTOOL_NETLINK Kconfig option to
make the build optional. Add initial overall interface description into
Documentation/networking/ethtool-netlink.rst, further patches will add more
detailed information.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch add a new binding that allows non-PHY MII time stamping
devices to find their buses. The new documentation covers both the
generic binding and one upcoming user.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit renames 'kunitconfig' to '.kunitconfig' so that it can be
automatically ignored by git and do not disturb people who want to type
'kernel/' by pressing only the 'k' and then 'tab' key.
Signed-off-by: SeongJae Park <sjpark@amazon.de>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Tested-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
The kunit doc suggests users to get the default `kunitconfig` from an
external git tree. However, the file is already located under the
`arch/um/configs/` of the kernel tree. Because the local file is easier
to access and maintain, this commit updates the doc to use it.
Signed-off-by: SeongJae Park <sjpark@amazon.de>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Tested-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
- Minor documentation fixes
- Fix a file corruption due to read racing with an insert range
operation.
- Fix log reservation overflows when allocating large rt extents
- Fix a buffer log item flags check
- Don't allow administrators to mount with sunit= options that will
cause later xfs_repair complaints about the root directory being
suspicious because the fs geometry appeared inconsistent
- Fix a non-static helper that should have been static
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Merge tag 'xfs-5.5-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
"Fix a few bugs that could lead to corrupt files, fsck complaints, and
filesystem crashes:
- Minor documentation fixes
- Fix a file corruption due to read racing with an insert range
operation.
- Fix log reservation overflows when allocating large rt extents
- Fix a buffer log item flags check
- Don't allow administrators to mount with sunit= options that will
cause later xfs_repair complaints about the root directory being
suspicious because the fs geometry appeared inconsistent
- Fix a non-static helper that should have been static"
* tag 'xfs-5.5-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: Make the symbol 'xfs_rtalloc_log_count' static
xfs: don't commit sunit/swidth updates to disk if that would cause repair failures
xfs: split the sunit parameter update into two parts
xfs: refactor agfl length computation function
libxfs: resync with the userspace libxfs
xfs: use bitops interface for buf log item AIL flag check
xfs: fix log reservation overflows when allocating large rt extents
xfs: stabilize insert range start boundary to avoid COW writeback race
xfs: fix Sphinx documentation warning
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Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 bug fixes from Ted Ts'o:
"Ext4 bug fixes, including a regression fix"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: clarify impact of 'commit' mount option
ext4: fix unused-but-set-variable warning in ext4_add_entry()
jbd2: fix kernel-doc notation warning
ext4: use RCU API in debug_print_tree
ext4: validate the debug_want_extra_isize mount option at parse time
ext4: reserve revoke credits in __ext4_new_inode
ext4: unlock on error in ext4_expand_extra_isize()
ext4: optimize __ext4_check_dir_entry()
ext4: check for directory entries too close to block end
ext4: fix ext4_empty_dir() for directories with holes
Pull networking fixes from David Miller:
1) Several nf_flow_table_offload fixes from Pablo Neira Ayuso,
including adding a missing ipv6 match description.
2) Several heap overflow fixes in mwifiex from qize wang and Ganapathi
Bhat.
3) Fix uninit value in bond_neigh_init(), from Eric Dumazet.
4) Fix non-ACPI probing of nxp-nci, from Stephan Gerhold.
5) Fix use after free in tipc_disc_rcv(), from Tuong Lien.
6) Enforce limit of 33 tail calls in mips and riscv JIT, from Paul
Chaignon.
7) Multicast MAC limit test is off by one in qede, from Manish Chopra.
8) Fix established socket lookup race when socket goes from
TCP_ESTABLISHED to TCP_LISTEN, because there lacks an intervening
RCU grace period. From Eric Dumazet.
9) Don't send empty SKBs from tcp_write_xmit(), also from Eric Dumazet.
10) Fix active backup transition after link failure in bonding, from
Mahesh Bandewar.
11) Avoid zero sized hash table in gtp driver, from Taehee Yoo.
12) Fix wrong interface passed to ->mac_link_up(), from Russell King.
13) Fix DSA egress flooding settings in b53, from Florian Fainelli.
14) Memory leak in gmac_setup_txqs(), from Navid Emamdoost.
15) Fix double free in dpaa2-ptp code, from Ioana Ciornei.
16) Reject invalid MTU values in stmmac, from Jose Abreu.
17) Fix refcount leak in error path of u32 classifier, from Davide
Caratti.
18) Fix regression causing iwlwifi firmware crashes on boot, from Anders
Kaseorg.
19) Fix inverted return value logic in llc2 code, from Chan Shu Tak.
20) Disable hardware GRO when XDP is attached to qede, frm Manish
Chopra.
21) Since we encode state in the low pointer bits, dst metrics must be
at least 4 byte aligned, which is not necessarily true on m68k. Add
annotations to fix this, from Geert Uytterhoeven.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (160 commits)
sfc: Include XDP packet headroom in buffer step size.
sfc: fix channel allocation with brute force
net: dst: Force 4-byte alignment of dst_metrics
selftests: pmtu: fix init mtu value in description
hv_netvsc: Fix unwanted rx_table reset
net: phy: ensure that phy IDs are correctly typed
mod_devicetable: fix PHY module format
qede: Disable hardware gro when xdp prog is installed
net: ena: fix issues in setting interrupt moderation params in ethtool
net: ena: fix default tx interrupt moderation interval
net/smc: unregister ib devices in reboot_event
net: stmmac: platform: Fix MDIO init for platforms without PHY
llc2: Fix return statement of llc_stat_ev_rx_null_dsap_xid_c (and _test_c)
net: hisilicon: Fix a BUG trigered by wrong bytes_compl
net: dsa: ksz: use common define for tag len
s390/qeth: don't return -ENOTSUPP to userspace
s390/qeth: fix promiscuous mode after reset
s390/qeth: handle error due to unsupported transport mode
cxgb4: fix refcount init for TC-MQPRIO offload
tc-testing: initial tdc selftests for cls_u32
...
