This is the foundational change for the routing subsytem rearchitecture.
More details and goals are available in https://reviews.freebsd.org/D24141 .
This patch introduces concept of nexthop objects and new nexthop-based
routing KPI.
Nexthops are objects, containing all necessary information for performing
the packet output decision. Output interface, mtu, flags, gw address goes
there. For most of the cases, these objects will serve the same role as
the struct rtentry is currently serving.
Typically there will be low tens of such objects for the router even with
multiple BGP full-views, as these objects will be shared between routing
entries. This allows to store more information in the nexthop.
New KPI:
struct nhop_object *fib4_lookup(uint32_t fibnum, struct in_addr dst,
uint32_t scopeid, uint32_t flags, uint32_t flowid);
struct nhop_object *fib6_lookup(uint32_t fibnum, const struct in6_addr *dst6,
uint32_t scopeid, uint32_t flags, uint32_t flowid);
These 2 function are intended to replace all all flavours of
<in_|in6_>rtalloc[1]<_ign><_fib>, mpath functions and the previous
fib[46]-generation functions.
Upon successful lookup, they return nexthop object which is guaranteed to
exist within current NET_EPOCH. If longer lifetime is desired, one can
specify NHR_REF as a flag and get a referenced version of the nexthop.
Reference semantic closely resembles rtentry one, allowing sed-style conversion.
Additionally, another 2 functions are introduced to support uRPF functionality
inside variety of our firewalls. Their primary goal is to hide the multipath
implementation details inside the routing subsystem, greatly simplifying
firewalls implementation:
int fib4_lookup_urpf(uint32_t fibnum, struct in_addr dst, uint32_t scopeid,
uint32_t flags, const struct ifnet *src_if);
int fib6_lookup_urpf(uint32_t fibnum, const struct in6_addr *dst6, uint32_t scopeid,
uint32_t flags, const struct ifnet *src_if);
All functions have a separate scopeid argument, paving way to eliminating IPv6 scope
embedding and allowing to support IPv4 link-locals in the future.
Structure changes:
* rtentry gets new 'rt_nhop' pointer, slightly growing the overall size.
* rib_head gets new 'rnh_preadd' callback pointer, slightly growing overall sz.
Old KPI:
During the transition state old and new KPI will coexists. As there are another 4-5
decent-sized conversion patches, it will probably take a couple of weeks.
To support both KPIs, fields not required by the new KPI (most of rtentry) has to be
kept, resulting in the temporary size increase.
Once conversion is finished, rtentry will notably shrink.
More details:
* architectural overview: https://reviews.freebsd.org/D24141
* list of the next changes: https://reviews.freebsd.org/D24232
Reviewed by: ae,glebius(initial version)
Differential Revision: https://reviews.freebsd.org/D24232
instead of sprinkling them out over many disjoint files. This is a follow-up
to achieve the same goal in an incomplete rev.348521.
Approved by: imp
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D20520
The ugly stick here is this bit in the respective headers:
#ifndef EXTERN
#define EXTERN extern
#endif
with a follow-up #define EXTERN in a single .c file to push all of their
definitions into one spot. A pass should be made over these three later to
push these definitions into the correct files instead, but this will suffice
for now and at a more leisurely pace.
MFC after: 3 days
Spread the globals far and wide, hopefully to the files that make the most
sense.
-fno-common will become the default in GCC10/LLVM11.
MFC after: 3 days
The kyua.conf from examples doesn't match the expected config and
contains a lot of undesirable entries such as setting the architecture
to amd64 explicitly.
Reported by: arichardson (missing config)
Reviewed by: emaste
Obtained from: CheriBSD
Differential Revision: https://reviews.freebsd.org/D24267
calendar(1) syntax is not capable of representing the rules for the
US Election Day. The hardcoded date was set in r15066 in 1996 and
hasn't changed since then.
PR: 173389
Reported by: Steve Ames <steve@energistic.com>
MFC after: 1 week
Both the result of the first_dayofweek_of_year and the target
weekday are zero-based (0 fo sunday) while the target month-day
or year-day is 1-based. Adjust logic accordingly.
Also add testcase for this PR to the kyua test suite
PR: 201062
Submitted by: Richard Narron <comet.berkeley@gmail.com>
MFC after: 1 week
"Latin".
Arguably the entire -p option should be removed. It shows only a few
countries, and it doesn't have any relationship with the rest of the
program.
PR: 244801
Submitted by: grog@
Reported by: Hamid Ali
As noted by brooks/emaste, this is the wrong approach to take.
Revert the changes so brooks can apply a more proper change.
Requested by: brooks, emaste
kd is already properly declared in extern.h and defined in main.c, rendering
this definition useless. This fixes the -fno-common build.
MFC after: 3 days
These manpages were meant to be templated once per `configure` run.
Given that we're not bound by as many constants, e.g., `--prefix` isn't
generally changing for kyua in the base system, having to generate the
manpages each build seems slightly less than optimal.
In the event that one's build environment doesn't define `$SH`, the build
will also fail until this change is introduced.
Instead of jumping through hoops dealing with shells or permissions, let's
just cut to the chase and check the generated copies into the sourcebase
under usr.bin/kyua .
MFC with: r359260
Reported by: Julian Stacey <jhs@berklix.com>
The "kyua about" command assumes these files exist causing tests
supplied devel/kyua to fail.
Fix a bug defining the default KYUA_DOCDIR so the installed files can be
found.
Reported by: jenkins tests
Reviewed by: lwhsu
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D24187
Having kyua in the base system will simplify automated testing in CI and
eliminates bootstrapping issues on new platforms.
The build of kyua is controlled by WITH(OUT)_TESTS_SUPPORT.
Reviewed by: emaste
Obtained from: CheriBSD
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D24103
There is an example in tail(1) manual page explaining how to use tail(1) to
track the contents of /var/log/messages. The example uses the -f flag to
follow the file. The problem with the -f flag is that it cannot handle the
situation where /var/log/messages is rotated. Hence, use -F instead in the
example.
Reviewed by: asomers
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D24157
It turns out that units(1) is not as horrible to use in scripts
as I initially thought. When the --terse flag is combined
with an appropriate output format (set via --output-format),
units(1) is actually capable of producing very nice results.
For example:
units -o %0.f -t '4 gigabytes' bytes
is is just going to print out the expected value of 4294967296.
There is no time to waste. People have to know about it.
I am adding an example for this at the top of the examples section
because this is what users are most likely looking for.
Approved by: bcr (mentor)
Differential Revision: https://reviews.freebsd.org/D24096
These have an educational value and are, no doubt, an integral part of the fun
behind running the BSDs.
PR: 242909, 242918
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D23581
In order to determine the type of a compressed file, we have to read
in the first four bytes which may also be important for decompression
purposes, to do that we would pass the buffer that we have already
read in, along with the size of it.
Rename header1 to fourbytes to make that explicit, and remove all
checks for prelen.
Reported by: cem
Reviewed by: cem
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24034
Clang from 9.0.0 onwards already has the necessary relocation range
extenders, so this workaround is no longer needed (it produces longer
and slower code). Tested on real hardware, and in cross-compile
environment.
Submitted by: mmel
This will be used to tag binaries that require W+X mappings, in advance
of the ability to prevent W^X in mmap/mprotect.
There is still some discussion about the flag's name, but the ABI won't
change even if the name does (as kib pointed out in the review).
Reviewed by: csjp, kib
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D23909
