Accurate ECN asks to conservatively estimate, when the
ACE counter may have wrapped due to a single ACK covering a larger
number of segments. This is described in Annex A.2 of the
accurate-ecn draft.
Justin Hibbits [Sun, 6 Nov 2022 00:01:50 +0000 (20:01 -0400)]
dpaa: Go to cleanup exit point on fman attach error
If fman_init() fails it can leave things in a state where it cannot
attach at all in the future, because it would simply exit without
tearing down everything that was already set up. Go to the exit point
to clean up on error instead, so that it can try again later.
Ed Maste [Fri, 4 Nov 2022 15:59:49 +0000 (11:59 -0400)]
Clang: Add Diags for targets pre to i686 for -fcf-protection
Intel Control-flow Enforcement Technology (CET) provides new
instructions `endbr32/64` for the indirect branch control.
They are NOPs on i686 and new targets. We need to check for that
in case it crashes on older targets.
PR: 264497
Reviewed by: dim
MFC after: 1 week
Obtained from: LLVM commit 52516782972730ff065a34123a9d8876da08c254
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D37268
Sumit Saxena [Fri, 4 Nov 2022 22:40:29 +0000 (16:40 -0600)]
if_bnxt: Added support for mgmt interface for passthrough hwrms
Added support for application management interface. There are two types of commands supported:
1. Firmware IOCTLs: These ioctls are meant for firmware
consumption. Driver acts as a transport for these.
2. Driver only IOCTLs: These ioctls are meant for driver
consumption. Driver will serve these ioctls without sending them down
to firmware.
Sumit Saxena [Fri, 4 Nov 2022 22:05:57 +0000 (16:05 -0600)]
if_bnxt: add support for Thor controller
Added support for Thor controller.
Below are the supported operations:
1. IPv4 ping (ICMP)
2. iperf / netperf (IPv4 TCP)
3. Promiscuous (tcpdump)
4. Can achieve 20 Gbps on a 25 G link (Uni-Di)
5. Can achieve 60 Gbps on a 100 G link (Uni-Di)
6. Port level and queue level driver stats.
Warner Losh [Fri, 4 Nov 2022 21:28:26 +0000 (15:28 -0600)]
stand: Remove unused enum
enum disk_ioctl is unused. It's only ever defined. All of the stand
code uses DIOCGSECTORSIZE and DIOCGMEDIASIZE instead, both to query and
to implement ioctl.
* Avoid unnecessary use of `unsigned char *`
* Use explicit casts when assigning `unsigned char *` to `char *` or vice versa
* Drop unused global variables (and fix memory leak in `gettable()`)
* Use `snprintf()` instead of `strcpy()` + `strcat()`
* Drop spurious braces in switch
Sponsored by: Klara, Inc.
Obtained from: Apple OSS Distributions (in part)
Differential Revision: https://reviews.freebsd.org/D37263
Li-Wen Hsu [Thu, 3 Nov 2022 19:17:43 +0000 (03:17 +0800)]
release/azure: Don't use azure-agent deprovision to build image
Deprovision feature of waagent is used for preparing to capture a
running VM and turn it into a VM image. Using it in the process of
building a VM image from scratch will cause some side effects such as
the hostname of the building host getting reset.
Remove calling the deprovision command and use a simpler way to fulfill
the requirements of the Azure VM image.
Jose Luis Duran [Wed, 2 Nov 2022 11:43:40 +0000 (08:43 -0300)]
ping_test: Fix tests ping_46 and ping6_46
If no IPv4-host, IPv4-mcast-group or IPv6-host is passed, it will
display the usage. The tests are passing because they are just checking
that the exit code is 1.
Fix the tests by checking the appropriate output message.
While here, change the description to match the output and add the
missing requirements.
Jose Luis Duran [Tue, 1 Nov 2022 08:01:36 +0000 (05:01 -0300)]
ping: Remove a vestigial notdef
It was once a function on 4.3BSD, pr_type() [1], used to convert an ICMP
"type" field to a printable string. In 4.4BSD it was superseded by
pr_icmph() [2].
NetBSD [3] and OpenBSD [4] have already removed it.
In order to handle those mbufs correctly on netfront use the bus_dma
interface and explicitly request that segments must not cross a page
boundary. No other requirements are necessary, so it's expected that
bus_dma won't need to bounce the data and hence it shouldn't
introduce a too big performance penalty.
Using bus_dma requires some changes to netfront, mainly in order to
accommodate for the fact that now ring slots no longer have a 1:1
match with mbufs, as a single mbuf can use two ring slots if the data
buffer crosses a page boundary. Store the first packet of the mbuf
chain in every ring slot that's used, and use a mbuf tag in order to
store the bus_dma related structures and a refcount to keep track of
the pending slots before the mbuf chain can be freed.
Colin Percival [Thu, 3 Nov 2022 01:55:12 +0000 (18:55 -0700)]
vtblk: Fix dumping
Now that vtblk uses busdma, it keeps important information inside its
request structures. The functions used for kernel dumps synthesize
their own request structures rather than using structures initialized
with the necessary bits for busdma.
Add busdma-bypass paths. Since dumping writes contiguous blocks of
physical memory, vtblk doesn't need busdma in that case.
Kyle Evans [Wed, 2 Nov 2022 20:29:16 +0000 (15:29 -0500)]
mktemp: don't double up on trailing slashes for -t paths
This is a minor cosmetic change; re-organize slightly to set tmpdir to
_PATH_TMP if we didn't otherwise have a tmpdir candidate, then check the
trailing char before appending another slash.
While we're here, remove some bogus whitespace and add a test case for
this change.
Obtained from: https://github.com/apple-oss-distributions/shell_cmds
Sponsored by: Klara, Inc.
Mark Johnston [Wed, 2 Nov 2022 17:27:27 +0000 (13:27 -0400)]
arm64: Handle translation faults for thread structures
The break-before-make requirement poses a problem when promoting or
demoting mappings containing thread structures: a CPU may raise a
translation fault while accessing curthread, and data_abort() accesses
the thread again before pmap_fault() can translate the address and
return.
Normally this isn't a problem because we have a hack to ensure that
slabs used by the thread zone are always accessed via the direct map,
where promotions and demotions are rare. However, this hack doesn't
work properly with UMA_MD_SMALL_ALLOC disabled, as is the case with
KASAN configured (since our KASAN implementation does not shadow the
direct map and so tries to force the use of the kernel map wherever
possible).
Fix the problem by modifying data_abort() to handle translation faults
in the kernel map without dereferencing "td", i.e., curthread, and
without enabling interrupts. pmap_klookup() has special handling for
translation faults which makes it safe to call in this context. Then,
revert the aforementioned hack.
Reviewed by: kevans, alc, kib, andrew
MFC after: 1 month
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D37231
Mark Johnston [Wed, 2 Nov 2022 17:08:07 +0000 (13:08 -0400)]
inpcb: Allow SO_REUSEPORT_LB to be used in jails
Currently SO_REUSEPORT_LB silently does nothing when set by a jailed
process. It is trivial to support this option in VNET jails, but it's
also useful in traditional jails.
This patch enables LB groups in jails with the following semantics:
- all PCBs in a group must belong to the same jail,
- PCB lookup prefers jailed groups to non-jailed groups
This is a straightforward extension of the semantics used for individual
listening sockets. One pre-existing quirk of the lbgroup implementation
is that non-jailed lbgroups are searched before jailed listening
sockets; that is preserved with this change.
Mark Johnston [Wed, 2 Nov 2022 17:03:41 +0000 (13:03 -0400)]
inpcb: Remove NULL checks of credential references
Some auditing of the code shows that "cred" is never non-NULL in these
functions, either because all callers pass a non-NULL reference or
because they unconditionally dereference "cred". So, let's simplify the
code a bit and remove NULL checks. No functional change intended.
Mike Karels [Wed, 2 Nov 2022 15:59:09 +0000 (10:59 -0500)]
fetch: support EAI_ADDRFAMILY error, correct two error messages
With the change to return EAI_ADDRFAMILY from getaddrinfo(), fetch
would print "Unknown resolver error" for that error. Add that error
and its string to libfetch's table, using an #ifdef just in case.
Correct error strings for EAI_NODATA (although it is currently unused)
and EAI_NONAME. Should maybe rework the code to use gai_strerror(3),
but that doesn't map directly, and the current strings are shortened.
Reviewed in https://reviews.freebsd.org/D37139 with related changes.
Mike Karels [Wed, 2 Nov 2022 15:57:59 +0000 (10:57 -0500)]
getaddrinfo: distinguish missing addrs from unresolvable names
Rework getaddrinfo(3) to return different error values for unresolvable
names (same as before, EAI_NONAME) and those without a requested addr
(EAI_ADDRFAMILY) when using DNS. This is implemented via an added
error in the nsswitch layer, NS_ADDRFAMILY, which is used only by
getaddrinfo(). The error is passed through nsdispatch(3), but that
routine has no changes to handle this error. The error originates in
the getaddrinfo DNS layer called via nsdispatch(), and is processed
by the search layer that calls nsdispatch().
While here, add a little style to returns near those that were
modified.
Reviewed in https://reviews.freebsd.org/D37139 with related changes.
gai_strerror.c still has messages for EAI_ADDRFAMILY and EAI_NODATA,
but not the man page. Re-add to the man page, and update comments
in the source. Document the errors that are not in RFC 3493 or
POSIX.
Reviewed in https://reviews.freebsd.org/D37139 with related changes.
Mike Karels [Wed, 2 Nov 2022 15:43:04 +0000 (10:43 -0500)]
netdb.h: re-enable EAI_ADDRFAMILY, EAI_NODATA
EAI_ADDRFAMILY and EAI_NODATA are not in RFC 3493, but are available
and used in many other systems. It is desirable to have at least one
of them in order to distinguish between names that do not resolve and
those that do not have the requested address type. A change to
getaddrinfo() will use EAI_ADDRFAMILY. Both were "#if 0"; re-enable,
conditioned on __BSD_VISIBLE, and update comments. Also add comments
and __BSD_VISIBLE conditional for the last three EAI errors, which
are not in the RFC or POSIX. Note, all of these are available in
NetBSD and OpenBSD, and EAI_ADDRFAMILY and EAI_NODATA are available
in Linux (glibc).
Reviewed in https://reviews.freebsd.org/D37139 with related changes.
Ed Maste [Tue, 19 Jul 2022 20:42:27 +0000 (16:42 -0400)]
linux64: improve linux_support.s make rules
Previously we relied on the .s.o rule in share/mk/bsd.suffixes.mk to
tell make that linux_support.o is built from linux_support.s, even
though we do not use the .s.o rule to assemble it.
Reviewed by: sjg
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D35864
Allow pf (l2) to be used to redirect ethernet packets to a different
interface.
The intended use case is to send 802.1x challenges out to a side
interface, to enable AT&T links to function with pfSense as a gateway,
rather than the AT&T provided hardware.
Kristof Provost [Wed, 2 Nov 2022 10:58:04 +0000 (11:58 +0100)]
bridge tests: re-enable span test
The root cause of the intermittent span test failures has been
identified as a race between sending the packet and starting the bpf
capture.
This is now resolved, so the test can be re-enabled.
Kristof Provost [Wed, 2 Nov 2022 10:55:39 +0000 (11:55 +0100)]
tests: make sniffer more robust
The Sniffer class is often used by test tools such as pft_ping to verify
that packets actually get sent where they're expected.
It starts a background thread to capture packets, but this thread needs
some time to start, leading to intermittent test failures when the
capture doesn't start before the relevant packet is sent.
Add a semaphore to ensure the Sniffer constructor doesn't return until
the capture is actually running.
Chuck Silvers [Tue, 1 Nov 2022 17:55:14 +0000 (10:55 -0700)]
ipmi: use a queue for kcs driver requests when possible
The ipmi watchdog pretimeout action can trigger unintentionally in
certain rare, complicated situations. What we have seen at Netflix
is that the BMC can sometimes be sent a continuous stream of
writes to port 0x80, and due to what is a bug or misconfiguration
in the BMC software, this results in the BMC running out of memory,
becoming very slow to respond to KCS requests, and eventually being
rebooted by its own internal watchdog. While that is going on in
the BMC, back in the host OS, a number of requests are pending in
the ipmi request queue, and the kcs_loop thread is working on
processing these requests. All of the KCS accesses to process
those requests are timing out and eventually failing because the
BMC is responding very slowly or not at all, and the kcs_loop thread
is holding the IPMI_IO_LOCK the whole time that is going on.
Meanwhile the watchdogd process in the host is trying to pat the
BMC watchdog, and this process is sleeping waiting to get the
IPMI_IO_LOCK. It's not entirely clear why the watchdogd process
is sleeping for this lock, because the intention is that a thread
holding the IPMI_IO_LOCK should not sleep and thus any thread
that wants the lock should just spin to wait for it. My best guess
is that the kcs_loop thread is spinning waiting for the BMC to
respond for so long that it is eventually preempted, and during
the brief interval when the kcs_loop thread is not running,
the watchdogd thread notices that the lock holder is not running
and sleeps. When the kcs_loop thread eventually finishes processing
one request, it drops the IPMI_IO_LOCK and then immediately takes the
lock again so it can process the next request in the queue.
Because the watchdogd thread is sleeping at this point, the kcs_loop
always wins the race to acquire the IPMI_IO_LOCK, thus starving
the watchdogd thread. The callout for the watchdog pretimeout
would be reset by the watchdogd thread after its request to the BMC
watchdog completes, but since that request never processed, the
pretimeout callout eventually fires, even though there is nothing
actually wrong with the host.
To prevent this saga from unfolding:
- when kcs_driver_request() is called in a context where it can sleep,
queue the request and let the worker thread process it rather than
trying to process in the original thread.
- add a new high-priority queue for driver requests, so that the
watchdog patting requests will be processed as quickly as possible
even if lots of application requests have already been queued.
With these two changes, the watchdog pretimeout action does not trigger
even if the BMC is completely out to lunch for long periods of time
(as long as the watchdogd check command does not also get stuck).
Kristof Provost [Tue, 1 Nov 2022 17:03:50 +0000 (18:03 +0100)]
pf tests: make killstate tests more robust
Rather than using a Scapy-based Python script only check if the state
still exists. Scapy tends to be slow to start, it appears because it
lists all interfaces and gets their (IPv6) addresses a couple of times
at startup. This can be sufficient for the ICMP state to time out and
the test to fail.
We now only check if the state exists or is removed as expected, which
makes things faster, and should mean the test is more robust on slower
machines (such as CI VMs).
First, an sbuf_new() in device_get_path() shadows the sb
passed in by dev_wired_cache_add(), leaving its sb in an
unfinished state, leading to a failed KASSERT(). Fixing this
is as simple as removing the sbuf_new() from device_get_path()
Second, we cannot simply take a pointer to the sbuf memory and
store it in the device location cache, because that sbuf
is freed immediately after we add data to the cache, leading
to a use-after-free and eventually a double-free. Fixing this
requires allocating memory for the path.
After a discussion with jhb, we decided that one malloc was
better than two in dev_wired_cache_add, which is why it changed
so much.
Reviewed by: jhb
Sponsored by: Netflix
MFC after: 14 days