reboot/halt/debug.
o Add support for most key combinations supported by syscons(4).
Reviewed by: dumbbell, emaste (prev revision of D747)
MFC after: 5 days
Sponsored by: The FreeBSD Foundation
device drivers with calls to the centralised m_print() implementation.
While the formatting and output details differ a little, the content
is essentially the same, and it is unlikely anyone has used this
debugging output in some time.
This change reduces awareness of mbuf cluster allocation (and,
especially, the M_EXT flag) outside of the mbuf allocator, which will
make it easier to refine the external storage mechanism without
disrupting drivers in the future.
Style bugs are preserved.
Reviewed by: bz, glebius
MFC after: 3 days
Sponsored by: EMC / Isilon Storage Division
- Reduce DPADD and LDADD in checkdpadd to -l<foo>
- Skip over -Wl,[es]*-group because -Wl,--end-group and
-Wl,--start-group might be required to properly link objects (see
usr.bin/clang/lldb as an example)
This caveat has been present for a while with some components of
the build. However, these false positives were made more more apparent
after r269648.
Phabric: D635
Reviewed by: jmmv (an earlier version)
PR: 192730
MFC after: 2 weeks
isn't being allocated for the last of the requested pages, because a
reservation won't fit in the gap between allocated pages, then the
reservation structure shouldn't be initialized.
While I'm here, improve the nearby comments.
Reported by: jeff, pho
MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division
The nmdm code enforces a number between the 'nmdm' and 'A|B' portions
of the device name. This is then used as a unit number, and sprintf'd
back into the tty name. If leading zeros were used in the name,
the created device name is different than the string used for the
clone-open (e.g. /dev/nmdm0001A will result in /dev/nmdm1A).
Since unit numbers are no longer required with the updated tty
code, there seems to be no reason to force the string to be a
number. The fix is to allow an arbitrary string between
'nmdm' and 'A|B', within the constraints of devfs names. This allows
all existing user of numeric strings to continue to work, and also
allows more meaningful names to be used, such as bhyve VM names.
Tested on amd64, i386 and ppc64.
Reported by: Dave Smith
PR: 192281
Reviewed by: neel, glebius
Phabric: D729
MFC after: 3 days
NetBSD's virtio-net implementation doesn't negotiate
the merged rx-buffers feature. To support this, check
to see if the feature was negotiated, and then adjust
the operation of the receive path accordingly by using
a larger iovec, and a smaller rx header.
In addition, ignore writes to the (read-only) status byte.
Tested with NetBSD/amd64 5.2.2, 6.1.4 and 7-beta.
Reviewed by: neel, tychon
Phabric: D745
MFC after: 3 days
added to the footer of the release/doc/ pages by
moving a hard-coded value (that is subject to human
error to change) to release.ent where other values
are regularly changed, and adding parsing logic to
release.xsl.
Approved by: re (implicit)
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
Mounting something in /tmp such as a build jail with nullfs mounts for
some directories can result in very surprising results the next day.
MFC after: 2 weeks
Relnotes: yes
when the initiator skips security negotiation. This fixes interoperability
with Xtend SAN initiator.
PR: 193021
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
At this moment it works only for files and ZVOLs in device mode since BIOs
have no respective respective cache control flags (DPO/FUA).
MFC after: 1 month
Sponsored by: iXsystems, Inc.
It affects the IPv6 source address selection algorithm (RFC 6724)
and allows override the last rule ("longest matching prefix") for
choosing among equivalent addresses. The address with `prefer_source'
will be preferred source address.
Obtained from: Yandex LLC
MFC after: 1 month
Sponsored by: Yandex LLC
This doesn't include the same kind of userland overriding that the IPv4
path has; nor does it yet know about 2-tuple versus 4-tuple hashing.
That'll come later.
Differential Revision: https://reviews.freebsd.org/D527
Reviewed by: grehan
with no RSS hash.
When doing RSS:
* Create a new IPv4 netisr which expects the frames to have been verified;
it just directly dispatches to the IPv4 input path.
* Once IPv4 reassembly is done, re-calculate the RSS hash with the new
IP and L3 header; then reinject it as appropriate.
* Update the IPv4 netisr to be a CPU affinity netisr with the RSS hash
function (rss_soft_m2cpuid) - this will do a software hash if the
hardware doesn't provide one.
NICs that don't implement hardware RSS hashing will now benefit from RSS
distribution - it'll inject into the correct destination netisr.
Note: the netisr distribution doesn't work out of the box - netisr doesn't
query RSS for how many CPUs and the affinity setup. Yes, netisr likely
shouldn't really be doing CPU stuff anymore and should be "some kind of
'thing' that is a workqueue that may or may not have any CPU affinity";
that's for a later commit.
Differential Revision: https://reviews.freebsd.org/D527
Reviewed by: grehan
and egress.
* rss_mbuf_software_hash_v4 - look at the IPv4 mbuf to fetch the IPv4 details
+ direction to calculate a hash.
* rss_proto_software_hash_v4 - hash the given source/destination IPv4 address,
port and direction.
* rss_soft_m2cpuid - map the given mbuf to an RSS CPU ("bucket" for now)
These functions are intended to be used by the stack to support
the following:
* Not all NICs do RSS hashing, so we should support some way of doing
a hash in software;
* The NIC / driver may not hash frames the way we want (eg UDP 4-tuple
hashing when the stack is only doing 2-tuple hashing for UDP); so we
may need to re-hash frames;
* .. same with IPv4 fragments - they will need to be re-hashed after
reassembly;
* .. and same with things like IP tunneling and such;
* The transmit path for things like UDP, RAW and ICMP don't currently
have any RSS information attached to them - so they'll need an
RSS calculation performed before transmit.
TODO:
* Counters! Everywhere!
* Add a debug mode that software hashes received frames and compares them
to the hardware hash provided by the hardware to ensure they match.
The IPv6 part of this is missing - I'm going to do some re-juggling of
where various parts of the RSS framework live before I add the IPv6
code (read: the IPv6 code is going to go into netinet6/in6_rss.[ch],
rather than living here.)
Note: This API is still fluid. Please keep that in mind.
Differential Revision: https://reviews.freebsd.org/D527
Reviewed by: grehan
This mutes warnings with clang
Approved by: rpaulo (mentor)
Reviewed by: das, kargl (both as part of a larger patch)
Phabric: D742
Sponsored by: EMC / Isilon Storage Division
information as part of recvmsg().
This is primarily used for debugging/verification of the various
processing paths in the IP, PCB and driver layers.
Unfortunately the current implementation of the control message path
results in a ~10% or so drop in UDP frame throughput when it's used.
Differential Revision: https://reviews.freebsd.org/D527
Reviewed by: grehan
overriding an existing flowid/flowtype field in the outbound mbuf with
the inp_flowid/inp_flowtype details.
The upcoming RSS UDP support calculates a valid RSS value for outbound
mbufs and since it may change per send, it doesn't cache it in the inpcb.
So overriding it here would be wrong.
Differential Revision: https://reviews.freebsd.org/D527
Reviewed by: grehan
