Add irq_get_msi_desc() as a wrapper around a PCI function which will
allocate a single cached value (see comment on struct) for the
msi_desc requested if it doesn't exist yet and handle freeing it
when the PCI device goes away. We take the values from the ivars of
the native (FreeBSD) device.
While changing struct pci_dev also add the msi_cap field requested by
a wireless driver.
Bump __FreeBSD_version so these changes can be detected.
MFC after: 3 days
X-MFC: move fields to end of struct (alloc happens in linux_pci.c)
Reviewed by: hselasky (earlier version)
Differential Revision: https://reviews.freebsd.org/D37523
Add a version of pci_get_device() as linuxkpi_pci_get_device()
not (yet) supporting the last argument.
Due to conflicts we cannot redefine it as we would normally do
in LinuxKPI so drivers have to be adjusted.
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D37593
pci_alloc_irq_vectors() is given a min and max vector value.
pci_enable_msi() will always succeed independent of these arguments as
it does not know about them. Further it will only ever allocate
1 "vector" not supporting any other amount.
So upfront check that (a) the available pci_msi_count() can satisfy the
requested minv and (b) given the pci_enable_msi() hard coded limit check
that minv is not larger than 1.
If we cannot satisfy either requirement return an error.
This fixes problems with drivers which check that the returned value
of allocated "vectors" will match their requests and only otherwise try
to fall back to ask for 1 or deal otherwise.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Reviewed by: hselasky (earlier version)
Differential Revision: https://reviews.freebsd.org/D37522
Add more functions to netdevice.h (netif_napi_add_tx() being the only
one implemented) and add platform_device.h and netlink.h in order to
make driver code compile.
The skeleton functions are used only in very limited scope and not at
all in our usage so far but add (invasive) #ifdef if removed.
Add pr_debug() calls to each of them in order to log a TODO (if DEBUG
compiled in) and someone should hit them in the future.
MFC after: 3 days
Commented on by: hselasky (earlier version)
Differential Revision: https://reviews.freebsd.org/D37599
While here:
- fix an argument of kstrtouint_from_user() to correct signedness.
- make kstrtou32() call kstrtouint() to avoid duplication (keep inline
function)
Add kstrtou32_from_user() based on other examples in the file
making it a copy of the now fixed kstrtouint_from_user().
Also add a rudimentarily hacked up version of mac_pton() which is
leanient accepting non-well-formed input but so far only with ':'
separators. It does not seem to obviously belong to any networking
header file so add it here.
Both new functions are needed for debugfs support for iwlwifi hence
coming together in one commit.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Commented on by: emaste
Differential Revision: https://reviews.freebsd.org/D37088
If a type=dir entry exists and all contents are directories, files
added with contents=, or symlinks with link= attributes then it doesn't
need to exist. Just let openat fail in that case. It's conceivable
this will make debugging some cases weird, but it's sufficent to handle
the way we add /root/.ssh in CheriBSD VM images.
This is a recommit of 794154149f with
bugfixes.
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D38029
If a type=dir entry exists and all contents are directories, files
added with contents=, or symlinks with link= attributes then it doesn't
need to exist. Just let openat fail in that case. It's conceivable
this will make debugging some cases weird, but it's sufficent to handle
the way we add /root/.ssh in CheriBSD VM images.
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D38029
When a link target is specified use it rather than attempting to read
a potentially non-existant file.
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D38028
Cast char's through unsigned char before storing as an integer in
xdr_char(), this ensures that the encoded form is consistently not
sign-extended following Open Solaris's example.
Prior to this change, platforms with signed chars would sign extend
values with the high bit set but ones with unsigned chars would not
so 0xff would be stored as 0x000000ff on unsigned char platforms and
0xffffffff on signed char platforms. Decoding has the same
result for either form so this is a largely cosmetic change, but it
seems best to produce consistent output.
For more discussion, see https://github.com/openzfs/zfs/issues/14173
Reviewed by: mav, imp
Differential Revision: https://reviews.freebsd.org/D37992
Summary:
The "public" KPI for ifnet belongs in net/if.h, with net/if_var.h being
implementation details for the netstack. This is the next step in
enforcing that separation.
Reviewed by: melifaro
Sponsored by: Juniper Networks, Inc.
Differential Revision: https://reviews.freebsd.org/D38030
Set the number of artificial frames to 5:
1. cpu_exception_handler_supervisor()
2. do_trap_supervisor()
3. dtrace_invop_start()
4. dtrace_invop()
5. fbt_invop()
Reviewed by: markj
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D37663
Experimentation shows this is the correct value; the dtrace/interrupt
handler frames are omitted, while the backtrace of the active thread is
recorded in its entirety.
Reviewed by: markj
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D37662
Backtraces for fbt probes are missing the caller's frame. Despite what
the inherited comment claims, we do need to insert this manually on
riscv. In fbt_invop(), set cpu_dtrace_caller to be the return address,
not addr.
We should not increment aframes within this function, since we begin the
main loop by unwinding past the current frame.
Plus some very small comment/style tweaks.
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D37661
Specifically it is missing in kernel modules, meaning a proper backtrace
can't be constructed.
Reviewed by: jhb
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D37657
This reverts commit c33509d49a.
It turns out that the long 27 second delay I saw in the
gss_acquire_cred() call was caused by a (mis)configured
DNS. Although I did not specify "dns" in /etc/nsswitch.conf,
I did have a /etc/resolv.conf file on the system (left
there by wpa_supplicant). As such, with no route, it was
somehow trying to contact the DNS server, although there was none.
Once I got rid of the /etc/resolv.conf file, it worked
as expected.
Since there is now a large 5 minute timeout on the
kernel to gssd(8) upcalls, the gssd(8) daemon will not
get terminated when this delay occurs and the only affect
is a 30 second delay during the mount.
Discussed with: bjk
Fix a possible NULL pointer deref in case alloc_pages() fails.
This is theoretical so far as up to now no code in the tree uses
linuxkpi_page_frag_alloc().
Reported by: Coverity via emaste
Coverity ID: 1502345
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
X-MFC-with: 55038a6306
Pull together the nearly identical copies of set_currdev in i386,
userboot and efi. Other boot loaders have variances that might be fine
to use the common routine, or not. Since they are harder to test for me,
and ofw and uboot do handle these setting differently, leave them be for
now.
Sponsored by: Netflix
Reviewed by: kevans
Differential Revision: https://reviews.freebsd.org/D38005
Since dev_cleanup() walks through all the devsw devices with dv_cleanup
rotuines, move it into libsa rather than having it in
'common'. Logically, it operates only on things that are in libsa, and
would never be different for different loaders: either people would call
it as is, or they'd do the loop themselves with 'special' things inline
between calls to cleanup (not that I think that will ever be needed
though).
Sponsored by: Netflix
Reviewed by: kevans
Differential Revision: https://reviews.freebsd.org/D38004
Replace 4 identical copies of *_setcurrdev with gen_setcurrdev to avoid
having to create a 5th copy. uboot_setcurrdev is actually different and
needs to remain separate (even though it's quite similar).
Sponsored by: Netflix
Reviewed by: fuz@fuz.su, kevans
Differential Revision: https://reviews.freebsd.org/D38003
The usual reason for an NFSv4 server replying NFSERR_WRONGSEC
to an operation is that a Kerberos credential is required.
This patch replaces a cryptic "err=10016" with a message
suggesting that a Kerberos TGT is probably needed.
MFC after: 2 weeks
It turns out that the underlying problem that caused
a Kerberized NFS mount with the "gssname" option to
fail was that the kernel upcall to the gssd(8) daemon
would time out prematurely after 25 seconds. The
gss_acquire_cred() GSSAPI library call
takes about 27 seconds for the case where a desired_name
argument is specified. A similarly long delay occurs
when the gss_init_sec_context() call is made and the
user principal's TGT has expired.
Once the upcall timed out, the kernel code assumed that
the gssd(8) daemon had died and closed the socket.
Ironically, closing the socket did cause the gssd(8)
daemon to terminate via a SIGPIPE signal.
This patch increases the timeout to 5 minutes. Since
a timeout should only occur when the gssd(8) daemon
has died, a long timeout should be ok and seems to fix this
problem.
I still think that commit c33509d49a should remain in the
system, since it allows the mount to complete quickly
and not take nearly 30 seconds.
PR: 268823
MFC after: 2 weeks
Virtio operates with physical addresses, while busdma is designed to
map these to produce bus addresses. On most supported platforms,
these two are interchangeable; on powerpc platforms, they are not.
When on powerpc, set an IOMMU of NULL, which causes the powerpc busdma
code to bypass the iommu mapping; this leaves us with the physical
buffer addresses which the virtio host expects to see.
Tested by: alfredo
Fixes: 782105f7c8 ("vtblk: Use busdma")
Sponsored by: https://www.patreon.com/cperciva
Differential Revision: https://reviews.freebsd.org/D37891
When RACK and BBR were added to the kernel, they were put
behind 'WITH_EXTRA_TCP_STACKS=1'. Unfortunately that was
never added to any NOTES file, so RACK & BBR were not compiled
with the various LINT-NOINET, LINT-NOINET6, and LINT-NOIP kernels.
This lead to the stacks sometimes being broken.
This change:
- Fixes RACK so that it compiles with the various LINT-NO* kernels
- Adds WITH_EXTRA_TCP_STACKS=1 to all NOTES kernels so that
RACK and BBR are compile tested regularly
Sponsored by: Netflix
Reviewed by: rrs
Differential Revision: https://reviews.freebsd.org/D37903
