Ed Maste [Sun, 28 Nov 2021 17:50:13 +0000 (12:50 -0500)]
sbin: build ping if at least one of INET & INET6 is enabled
It does not build (and serves no purpose) if neither is true (i.e.,
building WITHOUT_INET and WITHOUT_INET6). Also add an explicit error
in ping to make this case clear.
Ed Maste [Sat, 27 Nov 2021 20:27:45 +0000 (15:27 -0500)]
Remove options VESA from x86 GENERIC
options VESA / vesa.ko provides VESA Bios Extensions (VBE) support for
the legacy sc(4) console. It is not used by the default console, vt(4).
There is a report[1] of an incompatibility between VESA and the Nvidia
driver breaking suspend/resume. Since VESA is not used by the default
configuration anyway, just remove options VESA from GENERIC. The kernel
module is still available and may be loaded by sc(4) users who want to
select a VBE mode.
(Note that vt(4) does not support selecting a VBE mode. The loader can
set a VBE mode and vt(4) will use it via the vt_vbefb driver.)
Rick Macklem [Sat, 27 Nov 2021 23:34:45 +0000 (15:34 -0800)]
nfscl: Disable use of the LookupOpen RPC
The LookupOpen RPC reduces the number of Open RPCs
needed. Unfortunately, it breaks certain software
builds over NFS, so disable it until this is fixed.
The LookupOpen RPC is only used for NFSv4.1/4.2
mounts when the "oneopenown" mount option is
specified, so this should not affect many users.
Rick Macklem [Sat, 27 Nov 2021 23:02:04 +0000 (15:02 -0800)]
nfscl: Sanity check the Sequence slotid in reply
The slotid in the Sequence reply must be the same as
in the request. Check that it is the same and log
a console message if it is not, plus set it to the
correct value.
Wei Hu [Sat, 27 Nov 2021 06:42:34 +0000 (06:42 +0000)]
Hyper-V: vPCI: Prepopulate device bars
In recent Hyper-V releases on Windows Server 2022, vPCI code does not
initialize the last 4 bit of device bar registers. This behavior change
could result weird problems cuasing PCI code failure when configuring
bars.
Just write all 1's to those bars whose probed values are not the same
as current read ones. This seems to make Hyper-V vPCI and
pci_write_bar() to cooperate correctly on these releases.
Rick Macklem [Fri, 26 Nov 2021 23:42:32 +0000 (15:42 -0800)]
nfsd: Add checks for layout errors in LayoutReturn
For a LayoutReturn when using the Flexible File Layout,
error reports may be provided in the request.
Sanity check the size of these error reports and
check that they exist before calling nfsrv_flexlayouterr().
Andrew Turner [Mon, 22 Nov 2021 15:20:51 +0000 (15:20 +0000)]
Per-thread stack canary on arm64
With the update to llvm 13 we are able to tell the compiler it can find
the SSP canary relative to the register that holds the userspace stack
pointer. As this is unused in most of the kernel it can be used here
to point to a per-thread SSP canary.
As the kernel could be built with an old toolchain, e.g. when upgrading
from 13, add a warning that the options was enabled but the compiler
doesn't support it to both the build and kernel boot.
Discussed with: emaste
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33079
Mark Johnston [Fri, 26 Nov 2021 14:27:19 +0000 (09:27 -0500)]
Hoist cddl prebuild lib dependency definitions out of a MK_ZFS block
The compilation of several libraries under cddl/lib is not conditional
on MK_ZFS = "yes", so their dependency on libspl is not conditional
either. Unbreak buildworld when WITHOUT_ZFS is set.
Andriy Gapon [Fri, 26 Nov 2021 09:48:21 +0000 (11:48 +0200)]
twsi: support more message combinations in transfers
Most prominently, add support for a transfer where a write with no-stop
flag is followed by a write with no-start flag. Logically, it's a
single larger write, but consumers may want to split it like that
because one part can be a register ID and the other part can be data to
be written to (or starting at) that register.
Such a transfer can be created by i2c tool and iic(4) driver, e.g., for
an EEPROM write at specific offset:
i2c -m tr -a 0x50 -d w -w 16 -o 0 -c 8 -v < /dev/random
This should be fixed by new code that handles the end of data transfer
for both reads and writes. It handles two existing conditions and one
new. Namely:
- the last message has been completed -- end of transfer;
- a message has been completed and the next one requires the start
condition;
- a message has been completed and the next one should be sent without
the start condition.
In the last case we simply switch to the next message and start sending
its data. Reads without the start condition are not supported yet,
though. That's because we NACK the last byte of the previous message,
so the device stops sending data. To fix this we will need to add a
look-ahead at the next message when handling the penultimate byte of the
current one.
This change also fixed a bug where msg_idx was not incremented after a
read message. Apparently, typically a read message is a last message in
a transfer, so the bug did not cause much trouble.
Andriy Gapon [Fri, 26 Nov 2021 08:34:42 +0000 (10:34 +0200)]
twsi: make data receiving code safer
Assert that we are not receiving data beyond the requested length.
Assert that we have not NACK-ed incoming data prematurely.
Abort the current transfer if the incoming data is NACK-ed or not
NACK-ed unexpectedly.
Add debug logging of received data to complement logging of sent data.
Andriy Gapon [Fri, 26 Nov 2021 08:07:27 +0000 (10:07 +0200)]
twsi: move handling of TWSI_CONTROL_ACK into the state machine
Previously the code set TWSI_CONTROL_ACK in twsi_transfer() based on
whether the first message had a length of one. That was done regardless
of whether the message was a read or write and what kind of messages
followed it.
Now the bit is set or cleared while handling TWSI_STATUS_ADDR_R_ACK
state transition based on the current (read) message.
The old code did not correctly work in a scenario where a single byte
was read from an EEPROM device with two byte addressing.
For example:
i2c -m tr -a 0x50 -d r -w 16 -o 0 -c 1 -v
The reason is that the first message (a write) has two bytes, so
TWSI_CONTROL_ACK was set and never cleared.
Since the controller did not send NACK the EEPROM sent more data resulting
in a buffer overrun.
While working on TWSI_STATUS_ADDR_R_ACK I also added support for
the zero-length read access and then I did the same for zero-length write
access.
While rare, those types of I2C transactions are completely valid and are
used by some devices.
Andriy Gapon [Fri, 26 Nov 2021 07:44:30 +0000 (09:44 +0200)]
twsi: unify error handling, explicitly handle more conditions
twsi_error() is a new function that stops the current transfer and sets
up softc when an error condition is detected.
TWSI_STATUS_DATA_WR_NACK, TWSI_STATUS_BUS_ERROR and
TWSI_STATUS_ARBITRATION_LOST are now handled explicitly rather than
via the catch-all unknown status.
Also, twsi_intr() now calls wakeup() in a single place when the
transfer is finished.
Andriy Gapon [Fri, 26 Nov 2021 07:25:01 +0000 (09:25 +0200)]
twsi: protect interaction between twsi_transfer and twsi_intr
All accesses to softc are now done under a mutex to prevent data races
between the open context and the interrupt handler.
Additionally, the wait time in twsi_transfer is bounded now.
Previously we could get stuck there forever if an interrupt got lost.
Andriy Gapon [Fri, 26 Nov 2021 06:52:56 +0000 (08:52 +0200)]
twsi: compile in support for debug messages, disabled by default
Debug messages can now be enabled per driver instance via a new sysctl.
Also, debug messages in TWSI_READ and TWSI_WRITE require debug level
greater than 1 as they are mostly redundant because callers of those
functions already log most interesting results.
NB: the twsi drivers call their device iichb, so the new sysctl will
appear under dev.iichb.N.
The inclusion of 0a0f7486413c broke the build with the -DNO_ROOT option.
Specifically, that commit adds some relative paths (with `..`) to METALOG
that make other tools using that log, fail afterwards (tar, makefs...).
It's been argued[1] if this is really something mtree(8) should handle more
graciously. In the meantime, fix the breakage but changing the order in which
the links are created: first in the parent directory, then in the
architecture-specific one.
We keep the architecture-specific directories an the links to the parent
directories. This is something that we might want to change in the future.
Colin Percival [Tue, 23 Nov 2021 04:16:34 +0000 (20:16 -0800)]
EC2: Turn off IPv6 DAD
Disable Duplicate Address Detection in EC2 instances. The networking
configuration in EC2, with IPv6 addresses assigned by DHCPv6 and
host egress filtering, makes "duplicate addresses" impossible.
This speeds up the boot process in EC2 by 2 seconds.
Colin Percival [Mon, 22 Nov 2021 21:51:43 +0000 (13:51 -0800)]
etc/defaults/rc.conf: Add -i flag to rtsol/rtsold
This disables the random (between zero and one seconds) delay before
rtsol and rtsold send a a Router Solicitation packet. This delay is
specified as a SHOULD by RFC 4861 for avoidance of network congestion,
but network speeds have increased enough in the 25 years since this
first appeared (in RFC 1970) that it seems unnecessary as a default
at this point.
This speeds up the FreeBSD boot process by an average of 500 ms.
Ed Maste [Thu, 25 Nov 2021 18:50:03 +0000 (13:50 -0500)]
arch.7: update applicable FreeBSD versions to 12.0 and later
Information in this document is unchanged between 11.x and 12.x, but
this is intended to be a quick reference for supported architectures.
Also bump .Dd to cover recent changes including MIPS deprecation.
Leandro Lupori [Thu, 25 Nov 2021 19:41:46 +0000 (16:41 -0300)]
powerpc64le: fix boot when using QEMU PowerNV
When using QEMU PowerNV with latest op-build release (v2.7), its
kexec transfers control to FreeBSD kernel in BE mode, causing an
instant exception on LE kernels. Make kboot able to detect and
swap endian to fix this.
Reviewed by: imp
Sponsored by: Instituto de Pesquisas Eldorado (eldorado.org.br)
Differential Revision: https://reviews.freebsd.org/D33104
Leandro Lupori [Thu, 25 Nov 2021 18:54:11 +0000 (15:54 -0300)]
vt: export RGB offsets with FBIO_GETRGBOFFS
Add a new ioctl to vt to make it possible to export RGB offsets
set by vt drivers. This is needed to fix colors on X and Mesa
on some machines, especially on modern PowerPC64 BE ones.
With the appropriate changes in SCFB, to use this ioctl to find
out the correct RGB offsets, this fixes wrong colors on Talos II
and Blackbird, when used with their built-in video cards.
Reviewed by: alfredo
Sponsored by: Instituto de Pesquisas Eldorado (eldorado.org.br)
Differential Revision: https://reviews.freebsd.org/D29000
VOP_STRATEGY() requires locked vnode. Note that we lock the swap vnode
while pages are busy, but this would only cause real LoR if pages belong
to the swap vnode, which must not be the case for correct use.
Mark Johnston [Thu, 25 Nov 2021 16:27:49 +0000 (11:27 -0500)]
agp: Handle multiple devices more gracefully
Currently agp(4) effectively assumes that only one driver instance
exists, as the generic attach routine attempts to create /dev/agpgart
and triggers a panic if it already exists. Instead, handle this
situation by creating /dev/agpgart<unit> and making /dev/agpgart an
alias of /dev/agpgart0 for compatibility.
Kornel Duleba [Tue, 23 Nov 2021 08:13:56 +0000 (09:13 +0100)]
pci: Don't try to read cfg registers of non-existing devices
Instead of returning 0xffs some controllers, such as Layerscape generate
an external exception when someone attempts to read any register
of config space of a non-existing device other than PCIR_VENDOR.
This causes a kernel panic.
Fix it by bailing during device enumeration if a device vendor register
returns invalid value. (0xffff)
Use this opportunity to replace some hardcoded values with a macro.
I believe that this change won't have any unintended side-effects since
it is safe to assume that vendor == 0xffff -> hdr_type == 0xffff.
Alexander Motin [Thu, 25 Nov 2021 04:03:20 +0000 (23:03 -0500)]
APEI: Fix Generic Error Data Entry revision 3.0 handling.
Since revision 3.0 this structure grown another field, breaking access
to the following data structures. This change fixes the PCIe errors
decoding on newer systems.
Scott Long [Thu, 25 Nov 2021 02:41:18 +0000 (02:41 +0000)]
Fix "set but not used" warnings in mfi. The one in mfi.c:mfi_data_cb()
was a hidden but likely harmless mistake. The rest were just old code
that was OBE.
ldconfig(8): check for no-args command line after options are parsed
Default action for ldconfig is specified as -R AKA 'append', and for
no-args (without options changing default actions), ldconfig should
append empty list of directories to current list. But because the check
was done before options were parsed out, presence of any option turned
off default rescan.
As result, innocently-looked commands like `ldconfig -v' were interpreted
as setting directory hints list to one specified on the command line,
i.e. empty.
Use bool.
Use local variables instead of static.
Remove non-functional debugging override of hints file path.
Use explicit exit() instead of return from main.
Minor style tweaks.
Reviewed by: emaste
Tested by: jbeich
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D33058
Bjoern A. Zeeb [Wed, 24 Nov 2021 21:28:46 +0000 (21:28 +0000)]
LinuxKPI: USB return possible error from suspend/resume
USB suspend/resume cannot fail so we never returned the error which
resulted in a -Wunused-but-set-variable warning.
Initialize the return variable and return a possible error possibly
triggering a printf upstream to at least have a trace of the problem.
This also fixes the warning.
Suggested by: hselasky
Sponsored by: The FreeBSD Foundation
MFC after: 10 days
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D33107
Eric Joyner [Sat, 13 Feb 2021 00:04:54 +0000 (16:04 -0800)]
ixl(4): Remove iavf(4) source files
Since iavf(4) no longer shares code with ixl(4) as of commit f2fbd56a8d07665bc0a5e8b7e40026b50a591e2a and now has its own directory,
remove these now-unused iavf(4)-only files.
Eric Joyner [Fri, 12 Feb 2021 21:28:18 +0000 (13:28 -0800)]
iavf(4): Split source and update to 3.0.26-k
The iavf(4) driver now uses a different source base from ixl(4), since
it will be the standard VF driver for new Intel Ethernet products going
forward, including ice(4). It continues to use the iflib framework
for network drivers.
Since it now uses a different source code base, this commit adds a new
sys/dev/iavf entry, but it re-uses the existing module name so no
configuration changes are necessary.
Mark Johnston [Wed, 24 Nov 2021 18:43:26 +0000 (13:43 -0500)]
vm_fault: Introduce a fault_status enum for internal return types
Rather than overloading the meanings of the Mach statuses, introduce a
new set for use internally in the fault code. This makes the control
flow easier to follow and provides some extra error checking when a
fault status variable is used in a switch statement.
vm_fault_lookup() and vm_fault_relookup() continue to use Mach statuses
for now, as there isn't much benefit to converting them and they
effectively pass through a status from vm_map_lookup().
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