Do not explicitly encode control characters widths as 0
allowing wcwidth() to return the proper implicit value for
non-printable characters (-1).
Reported by: naddy
This improves cache behaviour by not writing to the same variable from
multiple cores simultaneously.
pf_state is only used in the kernel, so can be safely modified.
Reviewed by: Lutz Donnerhacke, philip
MFC after: 1 week
Sponsed by: Orange Business Services
Differential Revision: https://reviews.freebsd.org/D27661
It turns out pf incorrectly updates the TCP checksum if the TCP option
we're modifying is not 2-byte algined with respect to the start of the
packet.
Create a TCP packet with such an option and throw it through a scrub
rule, which will update timestamps and modify the packet.
PR: 240416
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D27688
The algorithm we use to update checksums only works correctly if the
updated data is aligned on 16-bit boundaries (relative to the start of
the packet).
Import the OpenBSD fix for this issue.
PR: 240416
Obtained from: OpenBSD
MFC after: 1 week
Reviewed by: tuexen (previous version)
Differential Revision: https://reviews.freebsd.org/D27696
And switch from int to bool while at it.
Reviewed by: melifaro@
Differential Revision: https://reviews.freebsd.org/D27725
MFC after: 1 week
Sponsored by: Mellanox Technologies // NVIDIA Networking
I suspect that virtualization techniques improved from the time when we
have to effectively disable TSC use in VM. For instance, it was reported
(complained) in https://github.com/JuliaLang/julia/issues/38877 that
FreeBSD is groundlessly slow on AWS with some loads.
Remove the check and start watching for complaints.
Reviewed by: emaste, grehan
Discussed with: cperciva
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D27629
The packet, if processed at this point, was already parsed to be UDP
directed to a vxlan port.
Connect-X 4+ does not provide easy method to infer which parser
processed the packet, so driver cannot set the flag without a lot of
efforts which are only to satisfy the formal requirements.
Reviewed by: bryanv, np
Sponsored by: Mellanox Technologies/NVidia Networking
Differential revision: https://reviews.freebsd.org/D27449
MFC after: 1 week
Otherwise libinput refuses to recoginize some Synaptics touchpads with
"kernel bug: device has min == max on ABS_X" message in Xorg.log.
PR: 251149
Reported-by: Jens Grassel <freebsd-ports@jan0sch.de>
Tested-by: Jens Grassel <freebsd-ports@jan0sch.de>
MFC-after: 2 weeks
Conducted tests showed that Embedded Controller is not mandatory for
WMI extensions to work.
Reported-by: yuripv
Reviewed-by: avg
MFC-after: 2 weeks
Differential-Revision: https://reviews.freebsd.org/D27653
The adr instruction allows for an address of +-1M from the instruction.
If we replace these with an adrp and an add instruction we can generate
an address +-4G. The adrp will get an address of the 4k page the label
is within, and the add uses the :lo12: prefix to add just the low bits
to this address.
This will allow us to move things around with fewer issues than if we
needed to keep them within the +-1MB range.
Sponsored by: Innovate UK
When tearing down a VNET, netgraph sends shutdown messages to all of the
nodes before detaching interfaces (SI_SUB_NETGRAPH comes before
SI_SUB_INIT_IF in teardown order). ng_ether nodes handle this by
destroying themselves without detaching from the parent ifnet. Then,
when ifnets go away they detach their ng_ether nodes again, triggering a
use-after-free.
Handle this by modifying ng_ether_shutdown() to detach from the ifnet.
If the shutdown was triggered by an ifnet being destroyed, we will clear
priv->ifp in the ng_ether detach callback, so priv->ifp may be NULL.
Also get rid of the printf in vnet_netgraph_uninit(). It can be
triggered trivially by ng_ether since ng_ether_shutdown() persists the
node unless NG_REALLY_DIE is set.
PR: 233622
Reviewed by: afedorov, kp, Lutz Donnerhacke
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D27662
In order to efficiently serve web traffic on a NUMA
machine, one must avoid as many NUMA domain crossings as
possible. With SO_REUSEPORT_LB, a number of workers can share a
listen socket. However, even if a worker sets affinity to a core
or set of cores on a NUMA domain, it will receive connections
associated with all NUMA domains in the system. This will lead to
cross-domain traffic when the server writes to the socket or
calls sendfile(), and memory is allocated on the server's local
NUMA node, but transmitted on the NUMA node associated with the
TCP connection. Similarly, when the server reads from the socket,
he will likely be reading memory allocated on the NUMA domain
associated with the TCP connection.
This change provides a new socket ioctl, TCP_REUSPORT_LB_NUMA. A
server can now tell the kernel to filter traffic so that only
incoming connections associated with the desired NUMA domain are
given to the server. (Of course, in the case where there are no
servers sharing the listen socket on some domain, then as a
fallback, traffic will be hashed as normal to all servers sharing
the listen socket regardless of domain). This allows a server to
deal only with traffic that is local to its NUMA domain, and
avoids cross-domain traffic in most cases.
This patch, and a corresponding small patch to nginx to use
TCP_REUSPORT_LB_NUMA allows us to serve 190Gb/s of kTLS encrypted
https media content from dual-socket Xeons with only 13% (as
measured by pcm.x) cross domain traffic on the memory controller.
Reviewed by: jhb, bz (earlier version), bcr (man page)
Tested by: gonzo
Sponsored by: Netfix
Differential Revision: https://reviews.freebsd.org/D21636
When ktls_bind_thread is 2, we pick a ktls worker thread that is
bound to the same domain as the TCP connection associated with
the socket. We use roughly the same code as netinet/tcp_hpts.c to
do this. This allows crypto to run on the same domain as the TCP
connection is associated with. Assuming TCP_REUSPORT_LB_NUMA
(D21636) is in place & in use, this ensures that the crypto source
and destination buffers are local to the same NUMA domain as we're
running crypto on.
This change (when TCP_REUSPORT_LB_NUMA, D21636, is used) reduces
cross-domain traffic from over 37% down to about 13% as measured
by pcm.x on a dual-socket Xeon using nginx and a Netflix workload.
Reviewed by: jhb
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D21648
- varios "new sentence, new line" warnings
- varios "sections out of conventional order" warnings
- varios "unusual Xr order" warnings
- varios "missing section argument" warnings
- varios "no blank before trailing delimiter" warnings
- varios "normalizing date format" warnings
MFC after: 1 month
- Add missing quotation mark for a comment above the .Dd
- inserting missing end of block: Sh breaks Bd
- skipping paragraph macro: Pp before Bl
- skipping paragraph macro: Pp before Bd
- empty block: Bd
MFC after: 1 week
- new sentence, new line
- sections out of conventional order: Sh FILES
- unusual Xr order: bthost(1) after bthidd(8)
- no blank before trailing delimiter
- whitespace at end of input line
- sections out of conventional order: Sh EXIT STATUS
MFC after: 1 week
- no blank before trailing delimiter
- missing section argument: Xr inet_pton
- skipping paragraph macro: Pp before Ss
- unusual Xr order: syslogd after sysrc
- tab in filled text
There were a few multiline NAT examples which used the .Dl macro with
tabs. I converted them to .Bd, which is a more suitable macro for that case.
MFC after: 1 week
- inserting missing end of block: Ss breaks Bl
- skipping paragraph macro: Pp before Ss
- referenced manual not found: Xr nvme 4 (2 times)
- unknown standard specifier: St The
The macro .St can only be used for standards known by mdoc(7). So add a
SEE ALSO section and add a reference to the NVM Express Base Specification.
MFC after: 2 weeks
- skipping paragraph macro: Pp before Bl
- skipping paragraph macro: Pp after Ss
- skipping paragraph macro: Pp at the end of Ss
- unusual Xr punctuation: none before bhnd_driver_get_erom_class(9)
- unusual Xr punctuation: none before bus_space(9)
MFC after: 1 week
- skipping paragraph macro: Pp before Bl
- skipping paragraph macro: Pp at the end of Ss
- missing section argument: Xr device_set_desc
- unusual Xr punctuation: none before bhnd_erom(9)
MFC after: 1 week
