vxlan creates a virtual LAN by encapsulating the inner Ethernet frame in
a UDP packet. This implementation is based on RFC7348.
Currently, the IPv6 support is not fully compliant with the specification:
we should be able to receive UPDv6 packets with a zero checksum, but we
need to support RFC6935 first. Patches for this should come soon.
Encapsulation protocols such as vxlan emphasize the need for the FreeBSD
network stack to support batching, GRO, and GSO. Each frame has to make
two trips through the network stack, and each frame will be at most MTU
sized. Performance suffers accordingly.
Some latest generation NICs have begun to support vxlan HW offloads that
we should also take advantage of. VIMAGE support should also be added soon.
Differential Revision: https://reviews.freebsd.org/D384
Reviewed by: gnn
Relnotes: yes
Before, the font was loaded and the window size recalculated, giving an
unusable terminal, even if the actual font didn't change.
Reported by: beeessdee@ruggedinbox.com
MFC after: 3 days
This fix a race where the threads waiting for the bus would wake up early
and still see bus as busy.
While here, give a better description to wmesg for the two use cases we
have (bus and io waiting).
MFC after: 1 week
will now find the virtual to physical mapping for libkvm to use at
runtime. This makes PHYSADDR redundant, however keep it around to give
everyone a chance to update their libkvm.
MFC after: 1 week
physaddr. This should allow for a kernel where PHYSADDR and KERNPHYSADDR
are both undefined.
For now libkvm will use the old method of reading physaddr and kernaddr
to allow it to work with old kernels. This could be removed in the future
when enough time has passed.
Differential Revision: https://reviews.freebsd.org/D939
MFC after: 1 week
bus_new_pass() handler so it doesn't happen until BUS_PASS_CPU. This allows
the anatop driver to outbid the generic simplebus driver (which the FDT
data describes as compatible).
Some day when we handle power regulators, this driver may actually
become a functional simplebus and attach the regulators as children, as
described in the FDT data.
Increasingly, FDT data has the "simple-bus" compatible string on nodes
that have children, but we wouldn't consider them to be busses. If the
node lacks a ranges property then we will fail to attach successfully,
so fail to probe as well.
rather than u_char.
To try and play nice with the ABI, the u_char CPU ID values are clamped
at 254. The new fields now contain the full CPU ID, or -1 for no cpu.
Differential Revision: D955
Reviewed by: jhb, kib
Sponsored by: Norse Corp, Inc.
lose the contents of consecutive writes (that happens within two SD card
clock cycles).
This fixes the causes of instability during the SD card detection and
identification on Raspberry Pi (which happens at 400 kHz and so was much
more vulnerable to this issue).
Remove the previous workaround which clearly can't provide the same effect.
MFC after: 1 week
Relnotes: yes
to be present. Thsi creates a new per-SoC driver that handles probe and
setting/getting the gpio flags.
Differential Revision: https://reviews.freebsd.org/D943
Reviewed by: loos, rpaulo
MFC after: 1 week
The TI watchdog timer is present on BeagleBone's. Since 2014, U-Boot
has been booting the BeagleBone with the watchdog enabled. We need to
disable it on boot to avoid a spurious reset.
The timer isn't exactly precise, but it will do as a watchdog. This
is also a reflection of the watchdog(9) API.
In the future, we could handle interrupts, but the watchdog(9) API
needs to be a bit smarter before that can happen.
Differential Revision: https://reviews.freebsd.org/D965
Reviewed by: andrew
MFC after: 1 week
Relnotes: yes
Older binaries are still permitted to use these flags.
PR: 193961 (exp-run in ports)
Differential Revision: https://reviews.freebsd.org/D848
Reviewed by: kib
consistent with pmc_destroy_owner_descriptor(). Also be sure to destroy
PMCs if a process exits or execs without explicitly releasing them.
Reviewed by: bz, gnn
MFC after: 2 weeks
Sponsored by: EMC / Isilon Storage Division
Differential Revision: https://reviews.freebsd.org/D958
