This is just clerical work to ease bug triage and may be used to set
expectations around the ability for anyone in the community to perform
testing and development on older parts.
Approved by: erj
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D29876
pipe_poll() may add the calling thread to the selinfo lists of both ends
of a pipe. It is ok to do this for the local end, since we know we hold
a reference on the file and so the local end is not closed. It is not
ok to do this for the remote end, which may already be closed and have
called seldrain(). In this scenario, when the polling thread wakes up,
it may end up referencing a freed selinfo.
Guard the selrecord() call appropriately.
Reviewed by: kib
Reported by: syzkaller+KASAN
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D30016
- Correct the type of the sysctl value.
- Initialize the oldsize parameter to cap_sysctlbyname()
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Add a POLLRDHUP example to this tool, for comparison with other
operating systems. Also record current output on FreeBSD and Linux.
Reviewed by: kib
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D29757
Teach poll(2) to support Linux-style POLLRDHUP events for sockets, if
requested. Triggered when the remote peer shuts down writing or closes
its end.
Reviewed by: kib
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D29757
Provide wrapper for the rnh_walktree_from() rib callback.
As currently `struct rib_head` is considered internal to the
routing subsystem, this wrapper is necessary to maintain isolation
from the external code.
Differential Revision: https://reviews.freebsd.org/D29971
MFC after: 1 week
Add suspend/resume callbacks to the driver and a live reset built around
them. This commit covers the basic NIC and future commits will expand
this functionality to other stateful parts of the chip. Suspend and
resume operate on the chip (the t?nex nexus device) and affect all its
ports. It is not possible to suspend/resume or reset individual ports.
All these operations can be performed on a running NIC. A reset will
look like a link bounce to the networking stack.
Here are some ways to exercise this functionality:
/* Manual suspend and resume. */
# devctl suspend t6nex0
# devctl resume t6nex0
/* Manual reset. */
# devctl reset t6nex0
/* Manual reset with driver sysctl. */
# sysctl dev.t6nex.0.reset=1
/* Automatic adapter reset on any fatal error. */
# hw.cxgbe.reset_on_fatal_err=1
Suspend disables the adapter (DMA, interrupts, and the port PHYs) and
marks the hardware as unavailable to the driver. All ifnets associated
with the adapter are still visible to the kernel but operations that
require hardware interaction will fail with ENXIO. All ifnets report
link-down while the adapter is suspended.
Resume will reattach to the card, reconfigure it as before, and recreate
the queues servicing the existing ifnets. The ifnets are able to send
and receive traffic as soon as the link comes back up.
Reset is roughly the same as a suspend and a resume with at least one of
these events in between: D0->D3Hot->D0, FLR, PCIe link retrain.
MFC after: 1 month
Relnotes: yes
Sponsored by: Chelsio Communications
Commit aad780464f added a function called nfscl_delegreturnvp()
to return delegations during the NFS VOP_RECLAIM().
The function erroneously assumed that nm_clp would
be non-NULL. It will be NULL for NFSV4.0 mounts until
a regular file is opened. It will also be NULL during
vflush() in nfs_unmount() for a forced dismount.
This patch adds a check for clp == NULL to fix this.
Also, since it makes no sense to call nfscl_delegreturnvp()
during a forced dismount, the patch adds a check for that
case and does not do the call during forced dismounts.
PR: 255436
Reported by: ish@amail.plala.or.jp
MFC after: 2 weeks
It was reported that a NFSv4.1 Linux client mount against
a FreeBSD12 server was hung, with the TCP connection in
CLOSE_WAIT state on the server.
When a NFSv4.1/4.2 mount is done and the back channel is
bound to the TCP connection, the soclose() is delayed until
a new TCP connection is bound to the back channel, due to
a reference count being held on the SVCXPRT structure in
the krpc for the socket. Without the soclose() call, the socket
will remain in CLOSE_WAIT and this somehow caused the Linux
client to hang.
This patch adds calls to soshutdown(.., SHUT_WR) that
are performed when the server side krpc sees that the
socket is no longer usable. Since this can be done
before the back channel is bound to a new TCP connection,
it allows the TCP connection to proceed to CLOSED state.
PR: 254590
Reported by: jbreitman@tildenparkcapital.com
Reviewed by: tuexen
Comments by: kevans
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D29526
* Fix 82574 Link Status Changes, carrying the OTHER mask bit around as
needed.
* Move igb-class LSC re-arming out of FAST back into the handler.
* Clarify spurious/other interrupt re-arms in FAST.
In MSI-X mode, 82574 and igb-class devices use an interrupt filter to
handle Link Status Changes. We want to do LSC re-arms in the handler
to take advantage of autoclear (EIAC) single shot behavior.
82574 uses 'Other' in ICR and IMS for LSC interrupt types when in MSI-X
mode, so we need to set and re-arm the 'Other' bit during attach and
after ICR reads in the FAST handler if not an LSC or after handling on
LSC due to autoclearing.
This work was primarily done to address the referenced PR, but inspired
some clarification and improvement for igb-class devices once the
intentions of previous bug fix attempts became clearer.
PR: 211219
Reported by: Alexey <aserp3@gmail.com>
Tested by: kbowling (I210 lagg), markj (I210)
Approved by: markj
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D29943
Currently, most of the rib(9) KPI does not use rnh pointers, using
fibnum and family parameters to determine the rib pointer instead.
This works well except for the case when we initialize new rib pointers
during fib growth.
In that case, there is no mapping between fib/family and the new rib,
as an entirely new rib pointer array is populated.
Address this by delaying fib algo initialization till after switching
to the new pointer array and updating the number of fibs.
Set datapath pointer to the dummy function, so the potential callers
won't crash the kernel in the brief moment when the rib exists, but
no fib algo is attached.
This change allows to avoid creating duplicates of existing rib functions,
with altered signature.
Differential Revision: https://reviews.freebsd.org/D29969
MFC after: 1 week
During early qemu development, the /soc node was marked as compatible
with "riscv-virtio-soc" instead of "simple-bus".
This was changed in qemu 53f54508dae6 in Sep 2018, and predates the
baseline required qemu version (5.0) for riscv by a wide margin.
The generic simplebus code handles attachment in all cases nowadays.
Sponsored by: Tag1 Consulting, Inc.
Reviewed by: jrtc27, mhorne
Differential Revision: https://reviews.freebsd.org/D30011
Merge commit 99eca1bd9c7a from llvm git (by Mark Johnston):
[Driver] Enable kernel address and memory sanitizers on FreeBSD
Test Plan: using kernel ASAN and MSAN implementations in FreeBSD
Reviewed By: emaste, dim, arichardson
Differential Revision: https://reviews.llvm.org/D98286
Merge commit f511dc75e4c1 from llvm git (by Mark Johnston):
[asan] Add an offset for the kernel address sanitizer on FreeBSD
This is based on a port of the sanitizer runtime to the FreeBSD kernel
that has been commited as https://cgit.freebsd.org/src/commit/?id=38da497a4dfcf1979c8c2b0e9f3fa0564035c147
and the following commits.
Reviewed By: emaste, dim
Differential Revision: https://reviews.llvm.org/D98285
Requested by: markj
MFC after: 3 days
A lot more generic cam related things are done in mmc_sim so this simplify
the driver a lot.
Differential Revision: https://reviews.freebsd.org/D27487
Reviewed by: kibab
A lot more generic cam related things are done in mmc_sim so this simplify
the driver a lot.
Differential Revision: https://reviews.freebsd.org/D27486
Reviewed by: imp
This adds a generic sim that abstract a lot of what needs to be implemented
in a driver for mmccam support.
A new interface with three methods is added :
- mmc_sim_get_tran_settings: Use to get what the controller supports in term
of capabilities, freq etc ...
- mmc_sim_set_tran_settings: Use to change the speed/freq/etc of the
sdcard host controller
- mmc_sim_cam_request: Used for MMCIO requests
Differential Revision: https://reviews.freebsd.org/D27485
Reviewed by: kibab
Modular fib lookup framework features logic that allows
route update batching for the algorithms that cannot easily
apply the routing change without rebuilding. As a result,
dataplane lookups may return old data until the the sync
takes place. With the default sync timeout of 50ms, it is
possible that new binary like ping(8) executed exactly after
route(8) will still use the old fib data.
To address some aspects of the problem, framework executes
all rtable changes without RTF_GATEWAY synchronously.
To fix the aforementioned problem, this diff extends sync
execution for all RTF_STATIC routes (e.g. ones maintained by
route(8).
This fixes a bunch of tests in the networking space.
Reported by: ci, arichardson
MFC after: 2 weeks
b31fbebeb3 introduced alloc_sockaddr_aligned() which, in fact,
failed to produce aligned addresses.
Reported by: Oskar Holmlund <oskar.holmlund at yahoo.com>
MFC after: immediately
33cb3cb2e3 introduced an `rib_head` structure field under the
FIB_ALGO define. This may be problematic for the CTF, as some
of the files including `route_var.h` do not have `fib_algo`
defined.
Make dtrace happy by making the field unconditional.
Suggested by: markj
Modify /usr/sbin/pkg to use environment variables specified in pkg.conf.
This allows control over underlying libraries like fetch(3), which can
be configured by setting HTTP_PROXY.
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D29820
When fsck_ffs is creating a lost+found directory it must allocate
an inode and a filesystem block. If it encounters a cylinder group
with a bad check hash, it complains twice: once for the inode and
again for the filesystem block.
This change suppresses the second complaint.
Reported by: Chuck Silvers
Tested by: Chuck Silvers
MFC after: 1 week
Sponsored by: Netflix
For a pNFS mount, the NFSv4.1/4.2 client uses compound RPCs that
have both Open and LayoutGet operations in them.
If the pNFS server were tp reply NFSERR_DELAY for one of these
compounds, the retry after a delay cannot be handled by
newnfs_request(), since there is a reference held on the open
state for the Open operation in them.
Fix this by adding these RPCs to the "don't do delay here"
list in newnfs_request().
This patch is only needed if the mount is using pNFS (the "pnfs"
mount option) and probably only matters if the MDS server
is issuing delegations as well as pNFS layouts.
Found by code inspection.
MFC after: 2 weeks
When fsck_ffs is running in interactive mode and finds unlinked files,
it offers to either unlink them or place them in a lost+found directory.
If the lost+found directory option is requested and no lost+found
directory exists, fsck_ffs offers to create one. When creating one,
it must allocate an inode and a filesystem block. It attempts to
allocate them from the first cylinder group. If the first cylinder
group has a bad check hash, it gives up.
This change expands the search into later cylinder groups when the
first one fails with a bad check hash.
Reported by: Chuck Silvers
Tested by: Chuck Silvers
MFC after: 1 week
Sponsored by: Netflix
Commit 4281bfec36 patched the server so that the
callback session slot would be free'd for reuse when
a callback attempt fails.
However, this can often result in the sequence# for
the session slot to be advanced such that the client
end will reply NFSERR_SEQMISORDERED.
To avoid the NFSERR_SEQMISORDERED client reply,
this patch negates the sequence# advance for the
case where the callback has failed.
The common case is a failed back channel, where
the callback cannot be sent to the client, and
not advancing the sequence# is correct for this
case. For the uncommon case where the client's
reply to the callback is lost, not advancing the
sequence# will indicate to the client that the
next callback is a retry and not a new callback.
But, since the FreeBSD server always sets "csa_cachethis"
false in the callback sequence operation, a retry
and a new callback should be handled the same way
by the client, so this should not matter.
Until you have this patch in your NFSv4.1/4.2 server,
you should consider avoiding the use of delegations.
Even with this patch, interoperation with the
Linux NFSv4.1/4.2 client in kernel versions prior
to 5.3 can result in frequent 15second delays if
delegations are enabled. This occurs because, for
kernels prior to 5.3, the Linux client does a TCP
reconnect every time it sees multiple concurrent
callbacks and then it takes 15seconds to recover
the back channel after doing so.
MFC after: 2 weeks
The driver uses both software resources (locks, callouts, memory for
descriptors and for bookkeeping, sysctls, etc.) and hardware resources
(VIs, DMA queues, TCAM entries, etc.) to operate the NIC. This commit
splits the single *_ALLOCATED flag used to track all these resources
into separate *_SW_ALLOCATED and *_HW_ALLOCATED flags.
This is the simplified pseudocode that now applies to most queues (foo
can be ctrlq/txq/rxq/ofld_txq/ofld_rxq):
/* Idempotent */
alloc_foo
{
if (!SW_ALLOCATED)
init_iq/init_eq/init_fl no-fail sw init
alloc_iq_fl/alloc_eq/alloc_wrq may-fail sw alloc
add_foo_sysctls, etc. no-fail post-alloc items
if (!HW_ALLOCATED)
alloc_iq_fl_hwq/alloc_eq_hwq hw resource allocation
}
/* Idempotent */
free_foo
{
if (!HW_ALLOCATED)
free_iq_fl_hwq/free_eq_hwq release hw resources
if (!SW_ALLOCATED)
free_iq_fl/free_eq/free_wrq release sw resources
}
The routines that take the driver to FULL_INIT_DONE and VI_INIT_DONE and
back are now all idempotent. The quiesce routines pay attention to the
HW_ALLOCATED flag and will not wait on the hardware for pidx/cidx
updates and other completions if this flag is not set.
MFC after: 1 month
Sponsored by: Chelsio Communications
Stop further processing of a packet when detecting that it
contains an INIT chunk, which is too small or is not the only
chunk in the packet. Still allow to finish the processing
of chunks before the INIT chunk.
Thanks to Antoly Korniltsev and Taylor Brandstetter for reporting
an issue with the userland stack, which made me aware of this
issue.
MFC after: 3 days
The mangling was present in the initial revision of the script, but its
purpose is not clear. It may have been to avoid defining make(1)
variables with a dash in the name, but this is permitted. Furthermore,
it results in invalid dependency information if a dependency's name
contains an underscore, causing e.g., libcompiler_rt-dev to depend on
libcompiler-rt, and resulting in warnings when installing base system
packages. Remove the mangling.
Reviewed by: manu
MFC after: 2 months
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D29883
parse_notes relies on the caller-supplied callback to initialize "res".
Two callbacks are used in practice, brandnote_cb and note_fctl_cb, and
the latter fails to initialize res. Fix it.
In the worst case, the bug would cause the inner loop of check_note to
examine more program headers than necessary, and the note header usually
comes last anyway.
Reviewed by: kib
Reported by: KMSAN
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D29986
