API should work as following:
- periodicaly report Lower-or-EQual bandwidth (LEQ) connections
over kernel socket, if user application registered for such
per-flow notifications
- report Grater-or-EQual (GEQ) bandwidth as soon as it reaches
specified value in configured time window
Custom implementation of callouts was removed. There is no
point of doing calout-wheel here as generic callouts are
doing exactly the same. The performance is not critical
for such reporting, so the biggest concern should be
to have a code which can be easily maintained.
This is ia preparation for locking rework which is highly inefficient.
Approved by: mw
Sponsored by: Stormshield
Obtained from: Semihalf
Differential Revision: https://reviews.freebsd.org/D30210
Commit b3d4c70dc6 added support for CLAIM_DELEG_CUR_FH to Open.
While doing this, I noticed that CLAIM_DELEG_PREV_FH support
could be added the same way. Although I am not aware of any extant
NFSv4.1/4.2 client that uses this claim type, it seems prudent to add
support for this variant of Open to the NFSv4.1/4.2 server.
This patch does not affect mounts from extant NFSv4.1/4.2 clients,
as far as I know.
MFC after: 2 weeks
This fixes a few bugs in iSCSI backends where the backends were using
the limits they advertised initially during the login phase as the
final values instead of the values negotiated with the other end.
Reported by: Jithesh Arakkan @ Chelsio
Reviewed by: mav
Differential Revision: https://reviews.freebsd.org/D30271
cxgbei stores state about a target transfer in the ctl_private[] array
of a ctl_io that is freed when a target transfer (represented by the
cdw) is freed. As such, freeing a ctl_io before a cdw that references
it can result in a use after free in cxgbei. Two of the four places
freed the cdw first, and the other two freed the ctl_io first. Fix
the latter two places to free the cdw first.
Reported by: Jithesh Arakkan @ Chelsio
Reviewed by: mav
Differential Revision: https://reviews.freebsd.org/D30270
At this point the directory's vnode lock is held, so blocking while
waiting for free pages makes the system more susceptible to deadlock in
low memory conditions. This is particularly problematic on NUMA systems
as UMA currently implements a strict first-touch policy.
ufsdirhash_build() already uses M_NOWAIT for other allocations and
already handled failures for the block array allocation, so just convert
to M_NOWAIT.
PR: 253992
Reviewed by: markj, mckusick, vangyzen
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D29045
Floating states get assigned to interface 'all' (V_pfi_all), so when we
try to flush all states for an interface states originally created
through this interface are not flushed. Only if-bound states can be
flushed in this way.
Given that we track the original interface we can check if the state's
interface is 'all', and if so compare to the orig_if instead.
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D30246
Track (and display) the interface that created a state, even if it's a
floating state (and thus uses virtual interface 'all').
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D30245
It's a class0 driver that implements some pcib methods and creates
a pci bus as its children.
The "ofw_pci" name will be used by a new driver that will be a subclass
of the pci bus.
No functional changes intended.
Submitted by: Kornel Duleba <mindal@semihalf.com>
Reviewed by: andrew
Obtained from: Semihalf
Sponsored by: Alstom Group
Differential Revision: https://reviews.freebsd.org/D30226
There is no need to preform any voltage reconfiguration
in case the vccq regulator is not physically attached to the
slot.
Submitted by: Lukasz Hajec <lha@semihalf.com>
Obtained from: Semihalf
Sponsored by: Alstom Group
Differential Revision: https://reviews.freebsd.org/D30355
While here, fix all links to older en_US.ISO8859-1 documentation
in the src/ tree.
PR: 255026
Reported by: Michael Büker <freebsd@michael-bueker.de>
Reviewed by: dbaio
Approved by: blackend (mentor), re (gjb)
MFC after: 10 days
Differential Revision: https://reviews.freebsd.org/D30265
API should work as following:
- periodicaly report Lower-or-EQual bandwidth (LEQ) connections
over kernel socket, if user application registered for such
per-flow notifications
- report Grater-or-EQual (GEQ) bandwidth as soon as it reaches
specified value in configured time window
Custom implementation of callouts was removed. There is no
point of doing calout-wheel here as generic callouts are
doing exactly the same. The performance is not critical
for such reporting, so the biggest concern should be
to have a code which can be easily maintained.
This is ia preparation for locking rework which is highly inefficient.
Approved by: mw
Sponsored by: Stormshield
Obtained from: Semihalf
Differential Revision: https://reviews.freebsd.org/D30210
These were seemingly copied over from icl_soft.
Reviewed by: np
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D30268
I botched a few of the changes when rebasing the changes in
4b6ed0758d across the changes in
43bbae1948.
- Move the counter allocations into alloc_ofld_rxq().
- Free the counters freeing an ofld rxq.
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D30267
The new Mikrotik 10/25G NIC is mostly compatible with AR8151 hardware,
with few exceptions:
* card supports only 32bit DMA operations
* card does not support write-one-to-clear semantics for interrupt status
register
* MDIO operations can take longer to complete
This patch adds support for Mikrotik 10/25G NIC to the alc driver
while maintaining support for all earlier HW.
The patch was tested with FreeBSD main branch as of commit
f4b38c360e
This was tested on Intel i7-4790K system with Mikrotik 10/25G NIC.
This was tested on Intel i7-4790K system with RB44Ge (AR8151 based 4-port NIC)
to verify backwards compatibility.
PR: 256000
Submitted by: Gatis Peisenieks <gatis@mikrotik.com>
MFC after: 1 week
The most difficult NFSv4 client recovery case happens when the
lease has expired on the server. For NFSv4.0, the client will
receive a NFSERR_EXPIRED reply from the server to indicate this
has happened.
For NFSv4.1/4.2, most RPCs have a Sequence operation and, as such,
the client will receive a NFSERR_BADSESSION reply when the lease
has expired for these RPCs. The client will then call nfscl_recover()
to handle the NFSERR_BADSESSION reply. However, for the expired lease
case, the first reclaim Open will fail with NFSERR_NOGRACE.
This patch recognizes this case and calls nfscl_expireclient()
to handle the recovery from an expired lease.
This patch only affects NFSv4.1/4.2 mounts when the lease
expires on the server, due to a network partitioning that
exceeds the lease duration or similar.
MFC after: 2 weeks
Each packet is counted as 128 bytes by the code, not 125. Not sure
what I was thinking about here 14 years ago. May be just a typo.
Reported by: Dmitry Luhtionov <dmitryluhtionov@gmail.com>
MFC after: 2 weeks
While the xin32k clk was implemented in rk3399_cru as a fixed rate
clock, migrate it to rk805 as we will also need the 2nd clock
'rtc_clko_wifi' for SDIO and BT.
Both clocks remain fixed rate, and while the 1st one is always on
(though that is not expressed in the clk framework), the 2nd one
we can toggle on/off.
Reviewed-by: manu
Tested-by: manu
MFC-after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D26870
Recent discussion on the nfsv4@ietf.org mailing list confirmed
that an NFSv4 server should reply to an RPC in less than 1second.
If an NFSv4 RPC requires a delegation be recalled,
the server will attempt a CB_RECALL callback.
If the client is not responsive, the RPC reply will be delayed
until the callback times out.
Without this patch, the timeout is set to 4 seconds (set in
ticks, but used as seconds), resulting in the RPC reply taking over 4sec.
This patch redefines the constant as being in milliseconds and it
implements that for a value of 800msec, to ensure the RPC
reply is sent in less than 1second.
This patch only affects mounts from clients when delegations
are enabled on the server and the client is unresponsive to callbacks.
MFC after: 2 weeks
The Linux NFSv4.1/4.2 client now uses the CLAIM_DELEG_CUR_FH
variant of the Open operation when delegations are recalled and
the client has a local open of the file. This patch adds
support for this variant of Open to the NFSv4.1/4.2 server.
This patch only affects mounts from Linux clients when delegations
are enabled on the server.
MFC after: 2 weeks
The current implement of ip_input() reject packets destined for
169.254.0.0/16, but not those original from 169.254.0.0/16 link-local
addresses.
Fix to fully respect RFC 3927 section 2.7.
PR: 255388
Reviewed by: donner, rgrimes, karels
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D29968
Once the final component of the IP address has been parsed, the offset
on the input must not be advanced, as this would remove an unparsed
character from the input.
Submitted by: Markus Stoff
Reviewed by: donner
MFC after: 3 weeks
Differential Revision: https://reviews.freebsd.org/D26489
We dereference so->so_cred to update the per-uid socket buffer
accounting, so the crfree() call must be deferred until after that
point.
PR: 255869
MFC after: 1 week
Since busy state is checked by all blocked writes, stopping a process
which waits in ttydisc_write() causes cascade. Utilize sigdeferstop()
to avoid the issue.
Submitted by: Jakub Piecuch <j.piecuch96@gmail.com>
PR: 255816
MFC after: 1 week
behind USB HUBs are detected and the USB reset counter logic will kick in
preventing enumeration of continuously failing ports.
Submitted by: phk@
Tested by: bz@
PR: 237666
MFC after: 1 week
Sponsored by: Mellanox Technologies // NVIDIA Networking
says it should be max 10 milliseconds.
This may fix some USB enumeration issues:
> usbd_req_re_enumerate: addr=3, set address failed! (USB_ERR_IOERROR, ignored)
> usbd_setup_device_desc: getting device descriptor at addr 3 failed,
Found by: Zhichao1.Li@dell.com
MFC after: 1 week
Sponsored by: Mellanox Technologies // NVIDIA Networking
0 milliseconds and 2 seconds inclusivly. Some style fixes while at it.
The USB specification has minimum values and maximum values,
and not only minimum values.
MFC after: 1 week
Sponsored by: Mellanox Technologies // NVIDIA Networking
The AP startup extern variable declarations are not longer needed,
since PVHv2 uses the native AP startup path using the lapic. Remove
the declaration and make the variables static to mp_machdep.c
Sponsored by: Citrix Systems R&D
When a module of type "hostuuid" is provided by the loader,
prison0_init strips any trailing whitespace and ASCII control
characters by (a) adjusting the buffer length, and (b) zeroing out
the characters in question, before storing it as the system's
hostuuid.
The buffer length adjustment was correct, but the zeroing overwrote
one byte higher in memory than intended -- in the typical case,
zeroing one byte past the end of the hostuuid buffer. Due to the
layout of buffers passed by the boot loader to the kernel, this will
be the first byte of a subsequent buffer.
This was *probably* harmless; prison0_init runs after preloaded kernel
modules have been linked and after the preloaded /boot/entropy cache
has been processed, so in both cases having the first byte overwritten
will not cause problems. We cannot however rule out the possibility
that other objects which are preloaded by the loader could suffer from
having the first byte overwritten.
Since the zeroing does not in fact serve any purpose, remove it and
trim trailing whitespace and ASCII control characters by adjusting
the buffer length alone.
Fixes: c3188289 Preload hostuuid for early-boot use
Reviewed by: kevans, markj
MFC after: 3 days
If the preloaded hostuuid value is invalid and verbose booting is
enabled, a warning is printed. This printf had two bugs:
1. It was missing a trailing \n character.
2. The malformed UUID is printed with %s even though it is not known
to be NUL-terminated.
This commit adds the missing \n and uses %.*s with the (already known)
length of the preloaded UUID to ensure that we don't read past the end
of the buffer.
Reported by: kevans
Fixes: c3188289 Preload hostuuid for early-boot use
MFC after: 3 days
We never set 'busy' and never dequeue from the pending mq. Remove this
code.
Reviewed by: ae
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D30313
Userspace relies on this pointer to work out if the kif is a group or
not. It can't use it for anything else, because it's a pointer to a
kernel address. Substitute 0xfeedc0de for 'true', so that we don't leak
kernel memory addresses to userspace.
PR: 255852
Reviewed by: donner
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D30284
qoriq_gpio_pin_setflags() locks the device mutex, as does
qoriq_gpio_map_gpios(), causing a recursion on non-recursive lock. This
was missed during testing for 16e549ebe.
Summary:
To make it easier to build a kernel with PowerISA 2.06 atomics (sub-word
atomics), add a kernel config option. User space still needs to specify
it as a CFLAG but that seems easier to do than for the kernel config.
Reviewed By: luporl
Differential Revision: https://reviews.freebsd.org/D29809
Summary:
There's no need to use a while loop in the IPI handler, the message list
is cached once and processed. Instead, since the existing code calls
ffs(), sort the handlers, and use a simple 'if' sequence.
Reviewed By: nwhitehorn
Differential Revision: https://reviews.freebsd.org/D30018
PVHv1 was officially removed from Xen in 4.9, so just axe the related
code from FreeBSD.
Note FreeBSD supports PVHv2, which is the replacement for PVHv1.
Sponsored by: Citrix Systems R&D
Reviewed by: kib, Elliott Mitchell
Differential Revision: https://reviews.freebsd.org/D30228
The change to futex_andl_smap() should have ordered stac before the
load from a user address, otherwise it does not fix anything.
Fixes: fb58045145 ("linux: Fix SMAP-enabled futex routines")
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
The original filesystem release (4.2BSD) had no embedded sysmlinks.
Historically symbolic links were just a different type of file, so
the content of the symbolic link was contained in a single disk block
fragment. We observed that most symbolic links were short enough that
they could fit in the area of the inode that normally holds the block
pointers. So we created embedded symlinks where the content of the
link was held in the inode's pointer area thus avoiding the need to
seek and read a data fragment and reducing the pressure on the block
cache. At the time we had only UFS1 with 32-bit block pointers,
so the test for a fastlink was:
di_size < (NDADDR + NIADDR) * sizeof(daddr_t)
(where daddr_t would be ufs1_daddr_t today).
When embedded symlinks were added, a spare field in the superblock
with a known zero value became fs_maxsymlinklen. New filesystems
set this field to (NDADDR + NIADDR) * sizeof(daddr_t). Embedded
symlinks were assumed when di_size < fs->fs_maxsymlinklen. Thus
filesystems that preceeded this change always read from blocks
(since fs->fs_maxsymlinklen == 0) and newer ones used embedded
symlinks if they fit. Similarly symlinks created on pre-embedded
symlink filesystems always spill into blocks while newer ones will
embed if they fit.
At the same time that the embedded symbolic links were added, the
on-disk directory structure was changed splitting the former
u_int16_t d_namlen into u_int8_t d_type and u_int8_t d_namlen.
Thus fs_maxsymlinklen <= 0 (as used by the OFSFMT() macro) can
be used to distinguish old directory formats. In retrospect that
should have just been an added flag, but we did not realize we
needed to know about that change until it was already in production.
Code was split into ufs/ffs so that the log structured filesystem could
use ufs functionality while doing its own disk layout. This meant
that no ffs superblock fields could be used in the ufs code. Thus
ffs superblock fields that were needed in ufs code had to be copied
to fields in the mount structure. Since ufs_readlink needed to know
if a link was embedded, fs_maxlinklen gets copied to mnt_maxsymlinklen.
The kernel panic that arose to making this fix was triggered when a
disk error created an inode of type symlink with no allocated data
blocks but a large size. When readlink was called the uiomove was
attempted which segment faulted.
static int
ufs_readlink(ap)
struct vop_readlink_args /* {
struct vnode *a_vp;
struct uio *a_uio;
struct ucred *a_cred;
} */ *ap;
{
struct vnode *vp = ap->a_vp;
struct inode *ip = VTOI(vp);
doff_t isize;
isize = ip->i_size;
if ((isize < vp->v_mount->mnt_maxsymlinklen) ||
DIP(ip, i_blocks) == 0) { /* XXX - for old fastlink support */
return (uiomove(SHORTLINK(ip), isize, ap->a_uio));
}
return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred));
}
The second part of the "if" statement that adds
DIP(ip, i_blocks) == 0) { /* XXX - for old fastlink support */
is problematic. It never appeared in BSD released by Berkeley because
as noted above mnt_maxsymlinklen is 0 for old format filesystems, so
will always fall through to the VOP_READ as it should. I had to dig
back through `git blame' to find that Rodney Grimes added it as
part of ``The big 4.4BSD Lite to FreeBSD 2.0.0 (Development) patch.''
He must have brought it across from an earlier FreeBSD. Unfortunately
the source-control logs for FreeBSD up to the merger with the
AT&T-blessed 4.4BSD-Lite conversion were destroyed as part of the
agreement to let FreeBSD remain unencumbered, so I cannot pin-point
where that line got added on the FreeBSD side.
The one change needed here is that mnt_maxsymlinklen is declared as
an `int' and should be changed to be `u_int64_t'.
This discovery led us to check out the code that deletes symbolic
links. Specifically
if (vp->v_type == VLNK &&
(ip->i_size < vp->v_mount->mnt_maxsymlinklen ||
datablocks == 0)) {
if (length != 0)
panic("ffs_truncate: partial truncate of symlink");
bzero(SHORTLINK(ip), (u_int)ip->i_size);
ip->i_size = 0;
DIP_SET(ip, i_size, 0);
UFS_INODE_SET_FLAG(ip, IN_SIZEMOD | IN_CHANGE | IN_UPDATE);
if (needextclean)
goto extclean;
return (ffs_update(vp, waitforupdate));
}
Here too our broken symlink inode with no data blocks allocated
and a large size will segment fault as we are incorrectly using the
test that we have no data blocks to decide that it is an embdedded
symbolic link and attempting to bzero past the end of the inode.
The test for datablocks == 0 is unnecessary as the test for
ip->i_size < vp->v_mount->mnt_maxsymlinklen will do the right
thing in all cases.
The test for datablocks == 0 was added by David Greenman in this commit:
Author: David Greenman <dg@FreeBSD.org>
Date: Tue Aug 2 13:51:05 1994 +0000
Completed (hopefully) the kernel support for old style "fastlinks".
Notes:
svn path=/head/; revision=1821
I am guessing that he likely earlier added the incorrect test in the
ufs_readlink code.
I asked David if he had any recollection of why he made this change.
Amazingly, he still had a recollection of why he had made a one-line
change more than twenty years ago. And unsurpisingly it was because
he had been stuck between a rock and a hard place.
FreeBSD was up to 1.1.5 before the switch to the 4.4BSD-Lite code
base. Prior to that, there were three years of development in all
areas of the kernel, including the filesystem code, from the combined
set of people including Bill Jolitz, Patchkit contributors, and
FreeBSD Project members. The compatibility issue at hand was caused
by the FASTLINKS patches from Curt Mayer. In merging in the 4.4BSD-Lite
changes David had to find a way to provide compatibility with both
the changes that had been made in FreeBSD 1.1.5 and with 4.4BSD-Lite.
He felt that these changes would provide compatibility with both systems.
In his words:
``My recollection is that the 'FASTLINKS' symlinks support in
FreeBSD-1.x, as implemented by Curt Mayer, worked differently than
4.4BSD. He used a spare field in the inode to duplicately store the
length. When the 4.4BSD-Lite merge was done, the optimized symlinks
support for existing filesystems (those that were initialized in
FreeBSD-1.x) were broken due to the FFS on-disk structure of
4.4BSD-Lite differing from FreeBSD-1.x. My commit was needed to
restore the backward compatibility with FreeBSD-1.x filesystems.
I think it was the best that could be done in the somewhat urgent
circumstances of the post Berkeley-USL settlement. Also, regarding
Rod's massive commit with little explanation, some context: John
Dyson and I did the initial re-port of the 4.4BSD-Lite kernel to
the 386 platform in just 10 days. It was by far the most intense
hacking effort of my life. In addition to the porting of tons of
FreeBSD-1 code, I think we wrote more than 30,000 lines of new code
in that time to deal with the missing pieces and architectural
changes of 4.4BSD-Lite. We didn't make many notes along the way.
There was a lot of pressure to get something out to the rest of the
developer community as fast as possible, so detailed discrete commits
didn't happen - it all came as a giant wad, which is why Rod's
commit message was worded the way it was.''
Reported by: Chuck Silvers
Tested by: Chuck Silvers
History by: David Greenman Lawrence
MFC after: 1 week
Sponsored by: Netflix
Commit 7a606f280a allowed the server to do retries of CB_RECALL
callbacks every couple of seconds. This was needed to allow the
Linux client to re-establish the back channel.
However this patch broke the delegation timeout check, such that
it would just keep retrying CB_RECALLS.
If the client has crashed or been network patitioned from the
server, this continues until the client TCP reconnects to
the server and re-establishes the back channel.
This patch modifies the code such that it still times out the
delegation recall after some minutes, so that the server will
allow the conflicting client request once the delegation times out.
This patch only affects the NFSv4 server when delegations are
enabled and a NFSv4 client that holds a delegation has crashed
or been network partitioned from the server for at least several
minutes when a delegation needs to be recalled.
MFC after: 2 weeks
It looks like I've missed a couple of places where we don't clear
stack-allocated CCBs. Don't panic when that happens, just print
a warning.
This is a temporary measure until I get those cases fixed.
Reviewed By: markj
Sponsored by: NetApp, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D30296
Some of them were dereferencing the user pointer before disabling SMAP.
PR: 255591
Reviewed by: kib
Tested by: pitwuu@gmail.com
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D30276
m_pullup(9) frees the mbuf(9) chain in the case of an allocation error.
The mbuf chain must not be freed again in this case.
PR: 255874
Submitted by: <lylgood@foxmail.com>
Approved by: markj
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D30273
Previously, daregister() could have been called before dainit()
initialized the UMA zone. This would trip a KASSERT.
Reported By: pho
Tested By: pho
Sponsored by: NetApp, Inc.
Sponsored by: Klara, Inc.
At some places the ASSERT was inserted before variable declarations are
finished. This is fixed now.
Reported by: kib
Reviewed by: kib
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D30282
This patch makes it possible for CAM to use small CCBs allocated
from an periph-specific UMA zone instead of the usual, huge ones.
The end result is that CCBs issued via da(4) take 544B (size of
ccb_scsiio) instead of the usual 2kB (size of 'union ccb', ~1.5kB,
rounded up by malloc(9)). For ATA it's 272B. We waste less
memory, we avoid zeroing the unused 1kB, and it should be easier
to allocate those CCBs in low memory conditions. It should also
be possible to use uma_zone_reserve(9) to improve behaviour
in low memory conditions even further.
Note that this does not change the size, or the layout, of CCBs
as such. CCBs get allocated in various different ways, in particular
on the stack, and I don't want to redo all that. Instead, this
provides an opt-in mechanism for the periph to declare "my start()
callback is fine with receiving a CCB allocated from this UMA zone".
In other words, most of the code works exactly as it used to; the
change only happens to IOs issued by xpt_run_allockq(), which
is - conveniently - pretty much all that matters for performance.
The reason for doing it this way is that it's pretty small, localized
change, and can be implemented gradually and iteratively: take a
periph, make sure its start() callback only casts the CCBs it takes
to a particular type of CCB, for example ccb_scsiio, and that it only
casts CCBs returned by cam_periph_getccb() to that type, then add UMA
zone for that size, and declare it safe to XPT.
This is disabled by default. Set 'kern.cam.ada.enable_uma_ccbs=1'
and 'kern.cam.da.enable_uma_ccbs=1' tunables to enable it. Testing
is welcome; I will flip the default to enable in two weeks from now.
Reviewed By: imp
Sponsored by: NetApp, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D28674
The field nullAddress in struct libalias is never set and never used.
It exists as a placeholder for an unused argument only.
Reviewed by: hselasky
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D30253
libalias is a convolut of various coding styles modified by a series
of different editors enforcing interesting convetions on spacing and
comments.
This patch is a baseline to start with a perfomance rework of
libalias. Upcoming patches should be focus on the code, not on the
style. That's why most annoying style errors should be fixed
beforehand.
Reviewed by: hselasky
Discussed by: emaste
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D30259
The CTL frontend might have provided a buffer that is smaller than the
FirstBurstLength and thus smaller than the amount of unsolicited data
included in the request PDU. Treat these transfers as an empty
transfer.
Reported by: Jithesh Arakkan @ Chelsio
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D29940
A single union ctl_io can be reused across multiple transfers (in
particular by the ramdisk backend). On a reuse, the reservation
pointer would retain its value from the previous transfer tripping an
assertion.
Reported by: Jithesh Arakkan @ Chelsio
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D29939
- Switch to allocating the cxgbei version of icl_pdu explicitly
as a separate refcounted object allocated via malloc/free
instead of storing it in the bhs mbuf prior to the bhs.
- Support the icl_conn_pdu_queue_cb() method to set a callback
on a PDU to be invoked when the PDU is freed.
- For ICL_NOCOPY buffers, use an external mbuf to manage the
storage for the buffer via m_extaddref(). Each external mbuf
holds a reference on the associated PDU, so the callback is
invoked once all of the external mbufs have been freed.
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D29910
- Only allocate 16K jumbo mbufs if the region of data to be
appended is sufficiently large, and use a loop.
- Use m_getm2() to allocate a chain for data less than 16K, or
if m_getjcl() fails.
- Use ENOMEM as the return value instead of '1' if the hook fails due
to a memory allocation error.
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D29909
A CAM target layer I/O CCB can use a S/G list of virtual address ranges
to describe its data buffer. This change adds zero-copy receive support
for such requests.
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D29908
As a result, CPL_FW4_ACK now returns credits for these work requests.
To support this, page pod work requests are now constructed in special
mbufs similar to "raw" mbufs used for NIC TLS in plain TX queues.
These special mbufs are stored in the ulp_pduq and dispatched in order
with PDU work requests.
Sponsored by: Chelsio Communications
Discussed with: np
Differential Revision: https://reviews.freebsd.org/D29904
update_rtm_from_rc() calls update_rtm_from_info() internally.
The latter one may update provided prtm pointer with a new rtm.
Reassign rtm from prtm afeter calling update_rtm_from_info() to
avoid touching the freed rtm.
PR: 255871
Submitted by: lylgood@foxmail.com
MFC after: 3 days
There are some scenarios where a timer event may be detached when it is
on the process' kqueue timer stop queue. If kqtimer_proc_continue() is
called after that point, it will iterate over the queue and access freed
timer structures.
It is also possible, at least in a multithreaded program, for a stopped
timer event to be scheduled without removing it from the process' stop
queue. Ensure that we do not doubly enqueue the event structure in this
case.
Reported by: syzbot+cea0931bb4e34cd728bd@syzkaller.appspotmail.com
Reported by: syzbot+9e1a2f3734652015998c@syzkaller.appspotmail.com
Reviewed by: kib
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D30251
Enabled driver initialization causes an abort
on the NXP LS1028ARDB platform (without any external
endpoints connected). Temporarily disable qoriq_dw_pci
probe, so that to allow successful booting of the OS.
Submitted by: Lukasz Hajec <lha@semihalf.com>
Obtained from: Semihalf
Sponsored by: Alstom Group
Differential Revision: https://reviews.freebsd.org/D30229
We shouldn't overwrite capability register. Instead, voltages supported
by the controller have to be read from dts, as the hardware doesn't
report correct values.
Submitted by: Lukasz Hajec <lha@semihalf.com>
Reviewed by: manu
Obtained from: Semihalf
Sponsored by: Alstom Group
Differential Revision: https://reviews.freebsd.org/D30123
Add a missing call to mmc_fdt_parse, without it some dts properties
are not parsed.
Submitted by: Lukasz Hajec <lha@semihalf.com>
Reviewed by: manu
Obtained from: Semihalf
Sponsored by: Alstom Group
Differential Revision: https://reviews.freebsd.org/D30122
Add data specific for SoC, including all necessary quirks.
Submitted by: Lukasz Hajec <lha@semihalf.com>
Reviewed by: manu
Obtained from: Semihalf
Sponsored by: Alstom Group
Differential Revision: https://reviews.freebsd.org/D30121
If sending out a packet fails during the loop over all links, the
allocated memory is leaked and not all links receive a copy. This
patch fixes those problems, clarifies a premature abort of the loop,
and fixes a minory style(9) bug.
PR: 255430
Submitted by: Dancho Penev
Tested by: Dancho Penev
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D30008
Hint the compiler, that this update is needed at most once per second.
Only in this case the memory line needs to be written. This will
reduce the amount of cache trashing during forward of most frames.
Suggested by: zec
Approved by: zec
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D28601
Other FDT platform (like powerpc64* or riscv64) don't have gpio built
by default so just compile the module for those two arches.
Fixes: 9e08f82058 ("modules: Add sdhci_fdt module")
We generally like to avoid style changes when other changes are not
planned. In this case there are some makesyscalls.lua changes in the
pipeline, and this cleans up style nits in generated files that were
highlighted by experiments with clang-format.
Reviewed by: brooks, kevans
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D30235
Remove OBJT_SWAP_TMPFS. Move tmpfs-specific swap pager bits into
tmpfs_subr.c.
There is no longer any code to directly support tmpfs in sys/vm, most
tmpfs knowledge is shared by non-anon swap object type implementation.
The tmpfs-specific methods are provided by registered tmpfs pager, which
inherits from the swap pager.
Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D30168
Pager is allowed to inherit part of its implementation from the existing
pager, which is done by copying non-NULL virtual method slots.
Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D30168
Mostly in cases where OBJ_SWAP flag works as well, or by reversing the
condition so that object types can be listed.
Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D30168
This avoids the need to know all existing object types in advance, by the
cost of loosing the assert that unknown object type is handled in a sane
manner.
Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D30168
to get object type, and stop enumerating OBJT_XXX constants. This also
provides properly a pointer for the vnode, if object backs any.
Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D30168
The node ng_bridge underwent a lot of changes in the last few months.
All those steps were necessary to distinguish between structure
modifying and read-only data transport paths. Now it's done, the node
can perform frame forwarding on multiple cores in parallel.
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D28123
Use the new control message to move ethernet addresses from a link to
a new link in ng_bridge(4). Send this message instead of doing the
work directly requires to move the loop detection into the control
message processing. This will delay the loop detection by a few
frames.
This decouples the read-only activity from the modification under a
more strict writer lock.
Reviewed by: manpages (gbe)
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D28559
Skyzall found an interesting panic in rack. When a SYN and FIN are
both sent together a KASSERT gets tripped where it is validating that
a mbuf pointer is in the sendmap. But a SYN and FIN often will not
have a mbuf pointer. So the fix is two fold a) make sure that the
SYN and FIN split the right way when cloning an RSM SYN on left
edge and FIN on right. And also make sure the KASSERT properly
accounts for the case that we have a SYN or FIN so we don't
panic.
Reviewed by: mtuexen
Sponsored by: Netflix Inc.
Differential Revision: https://reviews.freebsd.org/D30241
This combination does not make sense, and cannot be satisfied by lookup.
In particular, lookup cannot supply dvp, it only can directly return vp.
Reported and reviewed by: markj using syzkaller
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
The various protocol implementations are not very consistent about
freeing mbufs in error paths. In general, all protocols must free both
"m" and "control" upon an error, except if PRUS_NOTREADY is specified
(this is only implemented by TCP and unix(4) and requires further work
not handled in this diff), in which case "control" still must be freed.
This diff plugs various leaks in the pru_send implementations.
Reviewed by: tuexen
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D30151
Commit 81728a538 ("Split rtinit() into multiple functions.") removed
the initialization of sa6, but not one of its uses. This meant that we
were passing an uninitialized sockaddr as the address to
lltable_prefix_free(). Remove the variable outright to fix the problem.
The caller is expected to hold a reference on pr.
Fixes: 81728a538 ("Split rtinit() into multiple functions.")
Reported by: KMSAN
Reviewed by: donner
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D30166
A successful copyinstr() call guarantees that the returned string is
nul-terminated. Furthermore, the removed check would harmlessly compare
an uninitialized byte with '\0' if the new name is shorter than
IFNAMESIZ - 1.
Reported by: KMSAN
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
When the TCP is in the front states, don't take the slop variable
into account. This improves consistency with the base stack.
Reviewed by: rrs@
Differential Revision: https://reviews.freebsd.org/D30230
MFC after: 1 week
Sponsored by: Netflix, Inc.
While refactoring an earlier series of changes during review, the
'saved_data' variable stopped being used at the bottom of if_ioctl().
Suggested by: brooks
Reviewed by: brooks, imp, kib
Fixes: d17e0940f7 Rework compat shims in ifioctl().
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D30197
The hotplug script will be executed only once for each backend,
regardless of the frontend triggering reconnections. Fix blkback to
deal with the hotplug script being executed only once, so that
reconnections don't stall waiting for a hotplug script execution
that will never happen.
As a result of the fix move the initialization of dev_mode, dev_type
and dev_name to the watch callback, as they should be set only once
the first time the backend connects.
This fix is specially relevant for guests wanting to use UEFI OVMF
firmware, because OVMF will use Xen PV block devices and disconnect
afterwards, thus allowing them to be used by the guest OS. Without
this change the guest OS will stall waiting for the block backed to
attach.
Fixes: de0bad0001 ('blkback: add support for hotplug scripts')
MFC after: 1 week
Sponsored by: Citrix Systems R&D
Rack now after the previous commit is very careful to translate any
value in the hostcache for srtt/rttvar into its proper format. However
there is a snafu here in that if tp->srtt is 0 is the only time that
the HC will actually restore the srtt. We need to then only convert
the srtt restored when it is actually restored. We do this by making
sure it was zero before the call to cc_conn_init and it is non-zero
afterwards.
Reviewed by: Michael Tuexen
Sponsored by: Netflix Inc
Differential Revision: https://reviews.freebsd.org/D30213
Looping back router multicast traffic signifficantly
stresses network stack. Add possibility to disable or enable
loopbacked based on sysctl value.
Reported by: Daniel Deville
Reviewed by: mw
Differential Revision: https://reviews.freebsd.org/D29947
There is a race condition between V_ip_mrouter de-init
and ip_mforward handling. It might happen that mrouted
is cleaned up after V_ip_mrouter check and before
processing packet in ip_mforward.
Use epoch call aproach, similar to IPSec which also handles
such case.
Reported by: Damien Deville
Obtained from: Stormshield
Reviewed by: mw
Differential Revision: https://reviews.freebsd.org/D29946
There are two module declarations in the nfscl.ko module for "nfscl"
and "nfs". Both of these declarations had MODULE_DEPEND() calls.
This patch deletes the MODULE_DEPEND() calls for "nfs" to avoid
confusion with respect to what modules this module is dependent upon.
The patch also adds comments explaining why there are two module
declarations within the module.
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D30102
vn_fullpath_any_smr() will return a positive error number if the
caller-supplied buffer isn't big enough. In this case the error must be
propagated up, otherwise we may copy out uninitialized bytes.
Reported by: syzkaller+KMSAN
Reviewed by: mjg, kib
MFC aftr: 3 days
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D30198
It reopens the passed file descriptor, checking the file backing vnode'
current access rights against open mode. In particular, this flag allows
to convert file descriptor opened with O_PATH, into operable file
descriptor, assuming permissions allow that.
Reviewed by: markj
Tested by: Andrew Walker <awalker@ixsystems.com>
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D30148
Recover from excessive losses without reverting to a
retransmission timeout (RTO). Disabled by default, enable
with sysctl net.inet.tcp.do_lrd=1
Reviewed By: #transport, rrs, tuexen, #manpages
Sponsored by: Netapp, Inc.
Differential Revision: https://reviews.freebsd.org/D28931
The hostcache up to now as been updated in the discard callback
but without checking if we are all done (the race where there are
more than one calls and the counter has not yet reached zero). This
means that when the race occurs, we end up calling the hc_upate
more than once. Also alternate stacks can keep there srtt/rttvar
in different formats (example rack keeps its values in microseconds).
Since we call the hc_update *before* the stack fini() then the
values will be in the wrong format.
Rack on the other hand, needs to convert items pulled from the
hostcache into its internal format else it may end up with
very much incorrect values from the hostcache. In the process
lets commonize the update mechanism for srtt/rttvar since we
now have more than one place that needs to call it.
Reviewed by: Michael Tuexen
Sponsored by: Netflix Inc
Differential Revision: https://reviews.freebsd.org/D30172
Distinguish between truly invalid requests and those that fail because
we've already joined the group. Both cases fail, but differentiating
them allows userspace to make more informed decisions about what the
error means.
For example. radvd tries to join the all-routers group on every SIGHUP.
This fails, because it's already joined it, but this failure should be
ignored (rather than treated as a sign that the interface's multicast is
broken).
This puts us in line with OpenBSD, NetBSD and Linux.
Reviewed by: donner
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D30111
On rk3399 the VOP-little node has a single 'port' property (not a
collection of 'ports' or indexed ports).
Reviewed by: manu
Sponsored by: UKRI
Differential Revision: https://reviews.freebsd.org/D30165
There is a NFSv4 file attribute called TimeCreate
that can be used for va_birthtime.
r362175 added some support for use of TimeCreate.
This patch completes support of va_birthtime by adding
support for setting this attribute to the server.
It also eanbles the client to
acquire and set the attribute for a NFSv4
server that supports the attribute.
Reviewed by: markj
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D30156
platforms that for whatever reason cannot include the RATELIMIT option
can still work with rack. It adds two dummy functions that rack will
call and find out that the highest hw supported b/w is 0 (which
kinda makes sense and rack is already prepared to handle).
Reviewed by: Michael Tuexen, Warner Losh
Sponsored by: Netflix Inc
Differential Revision: https://reviews.freebsd.org/D30163
IF non-existend gateway was specified, the code responsible for calculating
an updated nexthop group, returned the same already-used nexthop group.
After the route table update, the operation result contained the same
old & new nexthop groups. Thus, the code responsible for decomposing
the notification to the list of simple nexthop-level notifications,
was not able to find any differences. As a result, it hasn't updated any
of the "simple" notification fields, resulting in empty rtentry pointer.
This empty pointer was the direct reason of a panic.
Fix the problem by returning ESRCH when the new nexthop group is the same
as the old one after applying gateway filter.
Reported by: Michael <michael.adm at gmail.com>
PR: 255665
MFC after: 3 days
This allows us to kill states created from a rule with route-to/reply-to
set. This is particularly useful in multi-wan setups, where one of the
WAN links goes down.
Submitted by: Steven Brown
Obtained from: https://github.com/pfsense/FreeBSD-src/pull/11/
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D30058
Introduce an nvlist based alternative to DIOCKILLSTATES.
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D30054
div_output_outbound() and div_output_inbound() relied on the caller to
free the mbuf if an error occurred. However, this is contrary to the
semantics of their callees, ip_output(), ip6_output() and
netisr_queue_src(), which always consume the mbuf. So, if one of these
functions returned an error, that would get propagated up to
div_output(), resulting in a double free.
Fix the problem by making div_output_outbound() and div_output_inbound()
responsible for freeing the mbuf in all cases.
Reported by: Michael Schmiedgen <schmiedgen@gmx.net>
Tested by: Michael Schmiedgen
Reviewed by: donner
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D30129
When unwinding the stack, we may encounter a stack frame in a poisoned
region of the stack, triggering a false positive.
Reviewed by: andrew, kib
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D30126
KASAN does not insert redzones around global variables and so is not
susceptible to the problem that led to us disabling ASAN for linker set
elements in the first place (see commit fe3d8086fb).
Reviewed by: andrew, kib
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D30126
issues.
A) Not enough hdrlen was being calculated when a UDP tunnel is
in place.
and
B) Not enough memory is allocated in racks fsb. We need to
overbook the fsb to include a udphdr just in case.
Submitted by: Peter Lei
Reviewed by: Michael Tuexen
Sponsored by: Netflix Inc
Differential Revision: https://reviews.freebsd.org/D30157
This is OBJT_SWAP pager, specialized for tmpfs. Right now, both swap pager
and generic vm code have to explicitly handle swap objects which are tmpfs
vnode v_object, in the special ways. Replace (almost) all such places with
proper methods.
Since VM still needs a notion of the 'swap object', regardless of its
use, add yet another type-classification flag OBJ_SWAP. Set it in
vm_object_allocate() where other type-class flags are set.
This change almost completely eliminates the knowledge of tmpfs from VM,
and opens a way to make OBJT_SWAP_TMPFS loadable from tmpfs.ko.
Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D30070
Put each type into dedicated line, which makes addition of new
types cleaner.
Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D30070
Allow vp_heldp argument to be NULL, in which case the returned vnode
is not held for tmpfs swap objects.
Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D30070
Makes the code in vm_object collapse/page_remove cleaner
Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D30070
This eliminates the staircase of conditions in vm_map_entry_set_vnode_text().
Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D30070
specialized for swap and vnode pagers, and used to implement
vm_object_set_writeable_dirty().
Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D30070
Fill lines with the function definitions.
Use local var to shorten repeated extra-long expressions.
Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D30070
It is needed to invalidate cache in case of inode space removal
to avoid situation, when extents cache returns not exist extent.
Reviewed by: pfg
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D29931
It is possible to walk thru inode extents if EXT2FS_PRINT_EXTENTS
macro is defined. The extents headers magics and physical blocks
ranges are checked during extents walk.
Reviewed by: pfg
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D29932
I saw a situation where the driver set CAM_AUTOSNS_VALID on a failed ccb
even though SRB_STATUS_AUTOSENSE_VALID was not set in the status.
The actual sense data remained all zeros.
The problem seems to be that create_storvsc_request() always sets
hv_storvsc_request::sense_info_len, so checking for sense_info_len != 0
is not enough to determine if any auto-sense data is actually available.
Reviewed by: whu, imp
MFC after: 2 weeks
Sponsored by: CyberSecure
Differential Revision: https://reviews.freebsd.org/D30124
The dev field is placed into the inode structure.
The major/minor numbers conversion to/from linux compatile
format happen during on-disk inodes writing/reading.
Reviewed by: pfg
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D29930
The birthtime field of struct vattr does not checked
for VNOVAL in case of ext2_setattr() and produce incorrect
inode birthtime values.
Found using pjdfstest:
pjdfstest/tests/utimensat/03.t
Reviewed by: pfg
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D29929
Virtio modern has the common data organized in little endian, but
on powerpc64 BE it was reading and writing in the wrong endian.
Submitted by: Leonardo Bianconi <leonardo.bianconi@eldorado.org.br>
Reviewed by: bryanv, alfredo
Sponsored by: Eldorado Research Institute (eldorado.org.br)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D28947
Only LS1046A and LS1028A require the base clk to be divided by 2.
Implement that by moving the divider to a SoC specific data.
This commit fixes base clk setup for the entire SoC family,
including the already suported LS2160A.
Submitted by: Lukasz Hajec <lha@semihalf.com>
Reviewed by: manu
Obtained from: Semihalf
Sponsored by: Alstom Group
Differential Revision: https://reviews.freebsd.org/D30120
The new driver provides probe and attach functions for the NXP LS1028A
clockgen and passes configuration information to QorIQ clockgen class.
Submitted by: Lukasz Hajec <lha@semihalf.com>
Obtained from: Semihalf
Sponsored by: Alstom Group
Differential Revision: https://reviews.freebsd.org/D30125
When _ISOC11_SOURCES is defined for glibc at the same time
__POSIX_C_SOURCE is defined, it extends the __POSIX_C_SOURCE definition
by exaclty what C11 adds to the spec for each system header. We follow
both OpenBSD's and glibc's convention by also C11 or higher compliation
mode is selected.
The Open Group is working on issuing a new version of the POSIX standard
that will realign the standard from C99 to a newer version of C. This
commit is a stop-gap measure for greater compatibility until that
environment has been standardized.
Reviewed by: brooks@, arichards@, Olivier Certne
(comments tweaked before commit)
PR: 255290
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D29902
Attaching and detaching devices can be heavy-weight and detaching can
sleep waiting for events. For that reason using the system-wide
single-threaded taskqueue_thread is not really appropriate.
There is even a possibility for a deadlock if taskqueue_thread is used
for detaching.
In fact, there is an easy to reproduce deadlock involving nvme, pass
and a sudden removal of an NVMe device.
A pass peripheral would not release a reference on an nvme sim until
pass_shutdown_kqueue() is executed via taskqueue_thread. But the
taskqueue's thread is blocked in nvme_detach() -> ... -> cam_sim_free()
because of the outstanding reference.
MFC after: 10 days
Sponsored by: CyberSecure
Reviewed by: mav, imp
Differential Revision: https://reviews.freebsd.org/D30144
zfsd uses a device's physical path attribute to automatically replace a
missing ZFS disk when a blank disk is inserted into the same physical
slot. Currently gmultipath passes through its underlying providers'
physical path attribute. That may cause zfsd to replace a missing
gmultipath provider with a newly arrived, single-path disk. That would
be bad.
This commit fixes that problem by simply appending "/mp" to the
underlying providers' physical path, in a manner similar to what geli
already does.
Sponsored by: Axcient
MFC after: 3 weeks
Differential Revision: https://reviews.freebsd.org/D29941
This fixes several breakages (panics) since the tcp_lro code was
committed that have been reported. Quite a few new features are
now in rack (prefecting of DGP -- Dynamic Goodput Pacing among the
largest). There is also support for ack-war prevention. Documents
comming soon on rack..
Sponsored by: Netflix
Reviewed by: rscheff, mtuexen
Differential Revision: https://reviews.freebsd.org/D30036
Summary:
Some methods are split between DMAP and non-DMAP, conditional on
hw_direct_map variable. Rather than checking this variable every time,
use it to install different functions via IFUNCs.
Reviewed By: luporl
Differential Revision: https://reviews.freebsd.org/D30071
When verifying, byte-by-byte, that the user-supplied counters are
zero-filled, sysctl_igmp_stat() would check for zero before checking the
loop bound. Perform the checks in the correct order.
Reported by: KASAN
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
When copying from the old buffer to the new buffer, we don't know the
requested size of the old allocation, but only the size of the
allocation provided by UMA. This value is "alloc". Because the copy
may access bytes in the old allocation's red zone, we must mark the full
allocation valid in the shadow map. Do so using the correct size.
Reported by: kp
Tested by: kp
Sponsored by: The FreeBSD Foundation
Centralize logic for handling compat ioctls into two blocks of code at
the start and end of the ioctl routine. This avoids the conversion
logic being spread out both in multiple blocks in ifioctl as well as
various helper functions.
Reviewed by: brooks, kib
Obtained from: CheriBSD
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D29891
In FreeBSD, the current time is computed from uptime + boottime. Uptime
is a continuous, smooth function that's monotonically increasing. To
effect changes to the current time, boottime is adjusted. boottime is
mutable and shouldn't be cached against future need. Document the
current implementation, with the caveat that we may stop stepping
boottime on resume in the future and will step uptime instead (noted in
the commit message, but not in the code).
Sponsored by: Netflix
Reviewed by: phk, rpokala
Differential Revision: https://reviews.freebsd.org/D30116
Add description for what each of the parameters are to the cam_sim_alloc
call. Add some additional context for the mtx and queue parameters to
explain what special values passed in mean.
MFC After: 3 days
Reviewed by: mav@
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D30115
DRIVER_OK status is set after device_attach() succeeds. For now postpone
disk_create to attach_completed() method.
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Reviewed by: grehan
Approved by: lwhsu (mentor)
Differential Revision: https://reviews.freebsd.org/D30049
Remove all the 'entry' and 'return' probes; they clutter up the source
and are redundant to FBT.
Reviewed By: dchagin
Sponsored By: EPSRC
Differential Revision: https://reviews.freebsd.org/D30040
DXR maintains compressed lookup structures with a trivial search
procedure. A two-stage trie is indexed by the more significant bits of
the search key (IPv4 address), while the remaining bits are used for
finding the next hop in a sorted array. The tradeoff between memory
footprint and search speed depends on the split between the trie and
the remaining binary search. The default of 20 bits of the key being
used for trie indexing yields good performance (see below) with
footprints of around 2.5 Bytes per prefix with current BGP snapshots.
Rebuilding lookup structures takes some time, which is compensated for by
batching several RIB change requests into a single FIB update, i.e. FIB
synchronization with the RIB may be delayed for a fraction of a second.
RIB to FIB synchronization, next-hop table housekeeping, and lockless
lookup capability is provided by the FIB_ALGO infrastructure.
DXR works well on modern CPUs with several MBytes of caches, especially
in VMs, where is outperforms other currently available IPv4 FIB
algorithms by a large margin.
Synthetic single-thread LPM throughput test method:
kldload test_lookup; kldload dpdk_lpm4; kldload fib_dxr
sysctl net.route.test.run_lps_rnd=N
sysctl net.route.test.run_lps_seq=N
where N is the number of randomly generated keys (IPv4 addresses) which
should be chosen so that each test iteration runs for several seconds.
Each reported score represents the best of three runs, in million
lookups per second (MLPS), for two bechmarks (RND & SEQ) with two FIBs:
host: single interface address, local subnet route + default route
BGP: snapshot from linx.routeviews.org, 887957 prefixes, 496 next hops
Bhyve VM on an Intel(R) Xeon(R) CPU E5-2670 0 @ 2.60 GHz:
inet.algo host, RND host, SEQ BGP, RND BGP, SEQ
bsearch4 40.6 20.2 N/A N/A
radix4 7.8 3.8 1.2 0.6
radix4_lockless 18.0 9.0 1.6 0.8
dpdk_lpm4 14.4 5.0 14.6 5.0
dxr 70.3 34.7 43.0 19.5
Intel(R) Core(TM) i5-5300U CPU @ 2.30 GHz:
inet.algo host, RND host, SEQ BGP, RND BGP, SEQ
bsearch4 47.0 23.1 N/A N/A
radix4 8.5 4.2 1.9 1.0
radix4_lockless 19.2 9.5 2.5 1.2
dpdk_lpm4 31.2 9.4 31.6 9.3
dxr 84.9 41.4 51.7 23.6
Intel(R) Core(TM) i7-4771 CPU @ 3.50 GHz:
inet.algo host, RND host, SEQ BGP, RND BGP, SEQ
bsearch4 59.5 29.4 N/A N/A
radix4 10.8 5.5 2.5 1.3
radix4_lockless 24.7 12.0 3.1 1.6
dpdk_lpm4 29.1 9.0 30.2 9.1
dxr 101.3 49.9 69.8 32.5
AMD Ryzen 7 3700X 8-Core Processor @ 3.60 GHz:
inet.algo host, RND host, SEQ BGP, RND BGP, SEQ
bsearch4 70.8 35.4 N/A N/A
radix4 14.4 7.2 2.8 1.4
radix4_lockless 30.2 15.1 3.7 1.8
dpdk_lpm4 29.9 9.0 30.0 8.9
dxr 163.3 81.5 99.5 44.4
AMD Ryzen 5 5600X 6-Core Processor @ 3.70 GHz:
inet.algo host, RND host, SEQ BGP, RND BGP, SEQ
bsearch4 93.6 46.7 N/A N/A
radix4 18.9 9.3 4.3 2.1
radix4_lockless 37.2 18.6 5.3 2.7
dpdk_lpm4 51.8 15.1 51.6 14.9
dxr 218.2 103.3 114.0 49.0
Reviewed by: melifaro
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D29821
Add a LPS benchmark variant which introduces artificial dependencies
between successive lookups. While here, instead of writing the results
from the lookups to a huge array, add them to an accumulator, in a more
lightweight attempt at preventing the CPU's OOO machinery from
discarding the lookup results if they would be completely unused.
net.route.test.run_lps_rnd measures LPS throughput with independent
uniformly random keys
net.route.test.run_lps_seq measures LPS throughput with uniformly
random keys with artificial interdependencies
Reviewed by: melifaro
MFC after: 7 days
Differential Revision: https://reviews.freebsd.org/D30096
Document what __FreeBSD_version means a bit better by documenting the
sorts of events it should be bumped for. Also include a handy shorthand
for what it means. Add a some advice for how frequently to change this
as well.
Added a note about the approved way to parse this from the param.h file,
though that was not in the review. All in-tree users have been updated
to this method prior to this commit. Move and reword the comment that
was on the same line.
Suggestions by: greg@unrelenting, arch@
Reviewed by: rgrimes@ (earlier version).
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D29850
The _ext event notification includes the address being added/removed and
that gives the driver an easy way to ignore non-IPv6 addresses. Remove
'tom' from the handler's name while here, it was moved out of t4_tom a
long time ago.
MFC after: 1 week
Sponsored by: Chelsio Communications
Add a new control message to move ethernet addresses to a given link
in ng_bridge(4). Send this message instead of doing the work directly.
This decouples the read-only activity from the modification under a
more strict writer lock.
Decoupling the work is a prerequisite for multithreaded operation.
Approved by: manpages (bcr), kp (earlier version)
MFC: 3 weeks
Differential Revision: https://reviews.freebsd.org/D28516
This fixes strace(1) erroneously reporting return values
as "Function not implemented", combined with reporting the binary
ABI as X32.
Very similar code in linux_ptrace_getregs() is left as it is - it's
probably wrong too, but I don't have a way to test it.
Sponsored By: EPSRC
Differential Revision: https://reviews.freebsd.org/D29927
When loading attributes from the cache, the NFS client is careful to
copy only the fields that it initialized. After fetching attributes
from the server, however, it would copy the entire vattr structure
initialized from the RPC response, so uninitialized stack bytes would
end up being copied to userspace. In particular, va_birthtime (v2 and
v3) and va_gen (v3) had this problem.
Use a common subroutine to copy fields provided by the NFS client, and
ensure that we provide a dummy va_gen for the v3 case.
Reviewed by: rmacklem
Reported by: KMSAN
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D30090
