jedec_dimm(4) is a superset of the functionality of jedec_ts(4). Mark
jedec_ts(4) as removed in FreeBSD 12, and include a pointer to the migration
instructions in the jedec_dimm(4) manpage, in both the jedec_ts(4) code and
the jedec_ts(4) manpage. Add a note to the jedec_dimm(4) manpage about the
fact that it is a superset of jedec_ts(4).
This change will be MFCed to stable/11 and stable/10; the followup change
to actually remove jedec_ts(4) from -HEAD will not.
Reviewed by: avg
MFC after: 1 week
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D16412
The primary reason for this commit is to separate mechanical and nearly
mechanical code changes from an upcoming fix for unsafe teardown of
shared interrupt handlers that have only filters (see D15905).
The technical rationale is that SLIST is sufficient. The only operation
that gets worse performance -- O(n) instead of O(1) is a removal of a
handler, but it is not a critical operation and the list is expected to
be rather short.
Additionally, it is easier to reason about SLIST when considering the
concurrent lock-free access to the list from the interrupt context and
the interrupt thread.
CK_SLIST is used because the upcoming change depends on the memory order
provided by CK_SLIST insert and the fact that CL_SLIST remove does not
trash the linkage in a removed element.
While here, I also fixed a couple of whitespace issues, made code under
ifdef notyet compilable, added a lock assertion to ithread_update() and
made intr_event_execute_handlers() static as it had no external callers.
Reviewed by: cem (earlier version)
MFC after: 4 weeks
Differential Revision: https://reviews.freebsd.org/D16016
o The correct value for _JB_SIGMASK is 27.
o The storage size for double-precision floating
point register is 8 bytes.
Submitted by: "James Clarke" <jrtc4@cam.ac.uk>
Reviewed by: markj@
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D16344
This change allows one to set the busy_detect flag
required by the synopsys UART at the loader prompt.
This is needed by the EPYC 3000 SoC.
This will give users a working console up to the point where getty is required:
hw.uart.console="mm:0xfedc9000,rs:2,bd:1"
Reviewed by: imp
MFC after: 4 weeks
Differential Revision: https://reviews.freebsd.org/D16399
Since r336313, TSO support for LEM-class devices is removed again as it
was before the conversion of {l,}em(4) to iflib(4) in r311849 and as a
result, isc_tx_tso_segments_max is 0 for LEM-class devices now. Thus,
inappropriate watermarks were used for this class.
This is really only a band-aid, though, because so far iflib(9) doesn't
fully take into account that DMA engines can support different maxima
of segments for transfers of TSO and non-TSO packets. For example, the
DESC_RECLAIMABLE macro is based on isc_tx_nsegments while MAX_TX_DESC
used isc_tx_tso_segments_max only. For most in-tree consumers that
doesn't make a difference as the maxima are the same for both kinds of
transfers (that is, apart from the fact that TSO may require up to 2
sentinel descriptors but also not with every MAC supported). However,
isc_tx_nsegments is 8 but isc_tx_tso_segments_max is 85 by default
with ixl(4).
tests for avail > 0, avail can never be 0 within that loop. Thus, move
decrementing avail and budget_left into the loop and before the code which
checks for additional descriptors having become available in case all the
previous ones have been processed but there still is budget left so the
latter code works as expected. [1]
- In iflib_{busdma_load_mbuf_sg,parse_header}(), remove dead stores to m
and n respectively. [2, 3]
- In collapse_pkthdr(), ensure that m_next isn't NULL before dereferencing
it. [4]
- Remove a duplicate assignment of segs in iflib_encap().
Reported by: Coverity
CID: 1356027 [1], 1356047 [2], 1368205 [3], 1356028 [4]
- Don't bother calling if_setbaudrate(9) as iflib_link_state_change(9)
takes care of that,
- correctly check for E1000_CTRL_EXT_LINK_MODE_GMII in E1000_CTRL_EXT [1],
- properly convert the uint16_t link_speed to a uint64_t baudrate by
using IF_Mbps() which contains an appropriate cast [2],
- remove the duplicate link down announcement when bootverbose isn't
zero and bring the remaining one in line with the other link state
messages.
o Remove a dead store to rid in em_if_msix_intr_assign(). [3]
o Or in the DMA coalescing Rx threshold so the other bits set in E1000_DMACR
remain intact as intended in igb_init_dmac(). [4]
Reported by: Coverity
CID: 1378464 [1], 1368765 [2], 1381681 [3], 1304929 [4]
These syscalls were always supposed to have been auditted, but due to
oversights never were.
PR: 228374
Reported by: aniketp
Reviewed by: aniketp
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D16388
When ABE was added (rS331214) to NewReno and leak fixed (rS333699) , it now has
a destructor (newreno_cb_destroy) for per connection state. Other congestion
controls may allocate and free cc_data on entry and exit, but the field is
never explicitly NULLed if moving back to NewReno which only internally
allocates stateful data (no entry contstructor) resulting in a situation where
newreno_cb_destory might be called on a junk pointer.
- NULL out cc_data in the framework after calling {cc}_cb_destroy
- free(9) checks for NULL so there is no need to perform not NULL checks
before calling free.
- Improve a comment about NewReno in tcp_ccalgounload
This is the result of a debugging session from Jason Wolfe, Jason Eggleston,
and mmacy@ and very helpful insight from lstewart@.
Submitted by: Kevin Bowling
Reviewed by: lstewart
Sponsored by: Limelight Networks
Differential Revision: https://reviews.freebsd.org/D16282
We've got a set of probably damaged hard disks, reporting 0x04,0x02
("Logical unit not ready, initializing command required") in response
to READ CAPACITY(16), where attempts to use START STOP UNIT for recovery
results in 0x44,0x00 ("Internal target failure") after ~1 second delay.
As result of all recovery retries, device open attempt took ~3 seconds
before finally reporting to GEOM that device is opened, but has no media.
If the open was for writing and since it hasn't formally failed, following
close triggered GEOM retaste, opening device few more times with respective
delays.
This change reduces whole time of this cycle from ~12 seconds to ~3 by
giving up on recovery after the first failure.
Reviewed by: ken
MFC after: 2 weeks
Sponsored by: iXsystems, Inc.
This fixes usage/report size calculation of Microsoft`s "Touch Hardware
Quality Assurance" certificate blob found in many touchscreens.
While here, join several "c->flags = dval" lines in to single line.
Reviewed by: hselasky
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D16357
Use CLSET_TIMEOUT to set the timeout for connections to DSs instead of
specifying a timeout on each RPC. This is done so that SO_SNDTIMEO
is set on the TCP socket as well as specifying a time limit when
waiting for an RPC reply. Useful if the send queue for the TCP
connection has become constipated, due to a failed DS.
The choice of lease_duration / 4 is fairly arbitrary, but seems to work
ok, with a lower bound of 10sec.
For client connections to a DS, set the retry limit to vfs.nfsd.dsretries,
which is 2 by default.
This patch should only affect pNFS connections to DSs.
This patch requires r336542.
MFC after: 2 weeks
r323954 changed the mp ring behaviour when 64-bit atomics were
available to abdicate the TX ring rather than having one become a
consumer thereby running to completion on TX. The consumer of the mp
ring was then triggered in the tx task rather than blocking the TX call.
While this significantly lowered the number of RX drops in small-packet
forwarding, it also negatively impacts TX performance.
With this change, the default behaviour is reverted, causing one TX ring
to become a consumer during the enqueue call. A new sysctl,
dev.X.Y.iflib.tx_abdicate is added to control this behaviour.
Reviewed by: gallatin
Sponsored by: Limelight Networks
Differential Revision: https://reviews.freebsd.org/D16302
Use the timer to poll for TX completions when there are
outstanding TX slots. Track when the last driver timer was called
to prevent overcalling it. Also clean up some kring vs NIC ring
usage.
Reviewed by: marius, Johannes Lundberg <johalun0@gmail.com>
Sponsored by: Limelight Networks
Differential Revision: https://reviews.freebsd.org/D16300
See the commit log messages for r321378 and r336288 for descriptions of
this functionality.
Reviewed by: alc
Differential Revision: https://reviews.freebsd.org/D16303
/chosen/stdout-path is a string, not ihandle. Treat it as such.
With this, ofwfb now starts correctly on a POWER9 system when launched from
the local console (not serial).
The FDT implementation of OF_instance_to_package() backend checks the
cross-reference to get the node. On failure, this returns the input handle
unchanged. In the case of ofwfb attachment, if /chosen/stdout property does not
exist, sc->sc_handle is either garbage or 0, which then gets propagated to node.
This will prevent "screen" from being used, resulting in not properly attaching.
Correct this by matching the code in ofwfb_probe().
Fire UDP receive probes when a packet is received and there is no
endpoint consuming it. Fire the probe also if the TTL of the
received packet is smaller than the minimum required by the endpoint.
Clarify also in the man page, when the probe fires.
Reviewed by: dteske@, markj@, rrs@
Sponsored by: Netflix, Inc.
Differential Revision: https://reviews.freebsd.org/D16046
During testing of the pNFS client, it was observed that an RPC could get
stuck in sosend() for a very long time if the network connection to a DS
had failed. This is fixed by setting SO_SNDTIMEO on the TCP socket.
This is only done when CLSET_TIMEOUT is done and this is not done by any
use of the krpc currently in the source tree, so there should be no effect
on extant uses.
A future patch will use CLSET_TIMEOUT for TCP connections to DSs.
Reviewed by: kib
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D16293
As an aside: 1200074 should be used as the last version with big
endian arm support, should that be needed. it was actually removed
a day later, but no bump was made until now.
Code analysis and runtime analysis using truss(8) indicate that the only
privileged operations performed by ntpd are adjusting system time, and
(re-)binding to privileged UDP port 123. These changes add a new mac(4)
policy module, mac_ntpd(4), which grants just those privileges to any
process running with uid 123.
This also adds a new user and group, ntpd:ntpd, (uid:gid 123:123), and makes
them the owner of the /var/db/ntp directory, so that it can be used as a
location where the non-privileged daemon can write files such as the
driftfile, and any optional logfile or stats files.
Because there are so many ways to configure ntpd, the question of how to
configure it to run without root privs can be a bit complex, so that will be
addressed in a separate commit. These changes are just what's required to
grant the limited subset of privs to ntpd, and the small change to ntpd to
prevent it from exiting with an error if running as non-root.
Differential Revision: https://reviews.freebsd.org/D16281
We can now have efifb being setup correctly.
Enjoy video output on some boards when you couldn't before.
Tested-On: Pine64
Tested-On: Pine64-LTS
Tested-On: Pinebook
Some driver (like efifb) needs to map more than the current L2_SIZE
Raise the size so we can map the framebuffer setup by the bootloader.
Reviewed by: cognet
I had naively assumed that building kernel would be sufficient to test that
the header is sane. However, it turns out this now needs -fms-extensions to
build. Rather than sprinkling -fms-extensions all over the place, revert
for now, and revisit with a better fix.
Summary:
Ports like sysutils/lsof troll through kernel structures, and
therefore include kernel headers and all the dirty secrets involved. struct
vm_page includes the struct md_page inline, which currently is only defined
if AIM or BOOKE is defined. Thus, by default, sysutils/lsof cannot build,
due to the struct md_page having an incomplete type. Fix this by merging
the two struct definitions into an anonymous struct-union.
A similar change could be made to unify the pmap structures as well.
Reviewed By: nwhitehorn
Differential Revision: https://reviews.freebsd.org/D16232
