Initially in_matrote() in_clsroute() in their current state was introduced by
r4105 20 years ago. Instead of deleting inactive routes immediately, we kept them
in route table, setting RTPRF_OURS flag and some expire time. After that, either
GC came or RTPRF_OURS got removed on first-packet. It was a good solution
in that days (and probably another decade after that) to keep TCP metrics.
However, after moving metrics to TCP hostcache in r122922, most of in_rmx
functionality became unused. It might had been used for flushing icmp-originated
routes before rte mutexes/refcounting, but I'm not sure about that.
So it looks like this is nearly impossible to make GC do its work nowadays:
in_rtkill() ignores non-RTPRF_OURS routes.
route can only become RTPRF_OURS after dropping last reference via rtfree()
which calls in_clsroute(), which, it turn, ignores UP and non-RTF_DYNAMIC routes.
Dynamic routes can still be installed via received redirect, but they
have default lifetime (no specific rt_expire) and no one has another trie walker
to call RTFREE() on them.
So, the changelist:
* remove custom rnh_match / rnh_close matching function.
* remove all GC functions
* partially revert r256695 (proto3 is no more used inside kernel,
it is not possible to use rt_expire from user point of view, proto3 support
is not complete)
* Finish r241884 (similar to this commit) and remove remaining IPv6 parts
MFC after: 1 month
# $FreeBSD$
This directory is for tools.
A tool is something which is sometimes useful, and doesn't fit any of
the other categories.
Please make a subdir per program, and add a brief description to this
file.
ansify Convert K&R-style function definitions to ANSI style
ath Tools specific to the Atheros 802.11 support
cfi Common Flash Interface (CFI) tool
commitsdb A tool for reconstructing commit history using md5
checksums of the commit logs.
crypto Test and exercise tools related to the crypto framework
cxgbetool A tool for the cxgbe(4) driver.
cxgbtool A tool for the cxgb(4) driver.
diffburst OBSOLETE: equivalent functionality is available via split -p.
For example: "split -p ^diff < patchfile". See split(1).
drm Tools specific to the DRM/KMS device drivers.
editing Editor modes and the like to help editing FreeBSD code.
epfe Extract printing filter examples from printing.sgml.
ether_reflect An Ethernet packet reflector for low level testing.
find-sb Scan a disk for possible filesystem superblocks.
gdb_regofs A simple tool that prints out a register offset table
for mapping gdb(1) register numbers to struct reg and
struct fpreg offsets. The tool is useful on selected
platforms only.
genericize Turn a kernel config into something that can more easily
be diffed against the appropriate GENERIC.
hcomp Compress header files by removing comments and whitespace.
html-mv Rename HTML generated filenames to human readable filenames.
ifinfo Uses the interface MIB to print out all the information
an interface exports in an ugly form.
iso Tool to compare the iso3166 and iso639 files in
/usr/share/misc with the data from the master sites.
iwi Tools specific to the Intel PRO/Wireless 2200BG/2225BG/2915ABG
support.
kdrv KernelDriver; add/list/remove third-party kernel driver
source to/in/from a kernel source tree.
kernelcruft Shellscript to find orphaned *.c files in /sys
kerninclude Shellscript to find unused #includes in the kernel.
kernxref Shellscript to cross reference symbols in the LINT kernel.
kttcp An in-kernel version of the ttcp network performance tool
mctest A multicast test program
mid Create a Message-ID database for mailing lists.
mwl Tools specific to the Marvell 88W8363 support
ncpus Count the number of processors
netmap Test applications for netmap(4)
notescheck Check for missing devices and options in NOTES files.
npe Tools specific to the Intel IXP4XXX NPE device
nxge A diagnostic tool for the nxge(4) driver
pciid Generate src/share/misc/pci_vendors.
pciroms A tool for dumping PCI ROM images. WARNING: alpha quality.
pirtool A tool for dumping the $PIR table on i386 machines at runtime.
portsinfo Generate list of new ports for last two weeks.
recoverdisk Copy as much data as possible from a defective disk.
scsi-defects Get at the primary or grown defect list of a SCSI disk.
sysdoc Build a manual page with available sysctls for a specific
kernel configuration.
tinybsd Script to build FreeBSD embedded systems.
track Track the progress of a world / kernel build
vimage An interim utility for managing the virtualized network
stack infrastructure.
vop_table Generates a HTML document that shows all the VOP's in
the kernel.
vxge A diagnostic tool for the vxge(4) driver
whereintheworld Summarizes "make world" output.
12580bcaa8