freebsd kernel with SKQ
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Colin Percival c74415ed3b Skip setting the MTU in the netfront driver (xn# devices) if the new MTU
is the same as the old MTU.  In particular, on Amazon EC2 "T2" instances
without this change, the network interface is reinitialized every 30
minutes due to the MTU being (re)set when a new DHCP lease is obtained,
causing packets to be dropped, along with annoying syslog messages about
the link state changing.

As a side note, the behaviour this commit fixes was responsible for
exposing the locking problems fixed via r318523 and r318631.

Maintainers of other network interface drivers may wish to consider making
the corresponding change; the handling of SIOCSIFMTU does not seem to
exhibit a great deal of consistency between drivers.

MFC after:	1 week
2017-06-02 07:03:31 +00:00
bin Fix integer overflow detection in dd 2017-05-31 16:07:32 +00:00
cddl MFV r316922: 5380 receive of a send -p stream doesn't need to try renaming snapshots 2017-05-24 22:30:21 +00:00
contrib Fix memory leak in edithost 2017-06-01 19:21:30 +00:00
crypto Merge OpenSSL 1.0.2l. 2017-05-25 20:52:16 +00:00
etc crashinfo: add "batch" mode and use it during boot 2017-06-01 21:23:04 +00:00
gnu Add 11.1 to the mdoc(7) mdoc.local.in. 2017-05-22 14:21:07 +00:00
include Use __BSD_VISIBLE test instead checking for absense of _POSIX_SOURCE. 2017-05-24 09:25:13 +00:00
kerberos5 Disconnect heimdal version of qsort.c from build because we are already 2017-05-26 06:09:11 +00:00
lib Remove stale cap_rights_get(2) manpage. 2017-06-02 03:53:34 +00:00
libexec Document direct execution mode for rtld. 2017-05-29 13:38:26 +00:00
release Turn on support for the Amazon "Elastic Network Adapter" in EC2 AMIs. 2017-05-25 19:02:54 +00:00
rescue DIRDEPS_BUILD: Update dependencies. 2017-05-09 01:48:23 +00:00
sbin ipfw.8: Note that the ipfw_nat kernel module must be loaded or that the 2017-06-01 09:14:49 +00:00
secure Merge OpenSSL 1.0.2l. 2017-05-25 20:52:16 +00:00
share META_MODE: Move ignoring of /usr/local/etc/libmap.d to proper place. 2017-06-01 23:04:44 +00:00
sys Skip setting the MTU in the netfront driver (xn# devices) if the new MTU 2017-06-02 07:03:31 +00:00
targets Enable llvm-objdump by default per r310775 2017-05-16 03:12:51 +00:00
tests tests/sys/opencrypto/runtests: apply minor polish to test script 2017-06-01 19:58:40 +00:00
tools Fix some new errors and a warning in cryptotest. 2017-06-01 21:07:32 +00:00
usr.bin Add -H as an alias for --speed-large-file to match GNU diff. 2017-06-02 03:25:59 +00:00
usr.sbin Bump manpage date. 2017-06-02 02:37:17 +00:00
.arcconfig callsign isn't required anymore 2016-09-29 06:19:45 +00:00
.arclint
COPYRIGHT Bump copyright year. 2016-12-31 12:41:42 +00:00
LOCKS
MAINTAINERS Due to time constraints remove myself as a vmm(4) maintainer. 2017-04-15 22:42:23 +00:00
Makefile Import OpenSSL 1.0.2l. 2017-05-25 19:38:38 +00:00
Makefile.inc1 native-xtools: Connect lld. 2017-06-02 00:57:59 +00:00
Makefile.libcompat Support skipping 'make obj' tree-walk. 2017-05-09 20:21:38 +00:00
ObsoleteFiles.inc Remove stale cap_rights_get(2) manpage. 2017-06-02 03:53:34 +00:00
README Import OpenSSL 1.0.2l. 2017-05-25 19:38:38 +00:00
README.md Remove hard line breaks from README.md 2017-03-01 15:39:58 +00:00
UPDATING Revert r319457. 2017-06-01 20:29:48 +00:00

FreeBSD Source:

This is the top level of the FreeBSD source directory. This file was last revised on: FreeBSD

For copyright information, please see the file COPYRIGHT in this directory (additional copyright information also exists for some sources in this tree - please see the specific source directories for more information).

The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree. See build(7) and http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html for more information, including setting make(1) variables.

The buildkernel and installkernel targets build and install the kernel and the modules (see below). Please see the top of the Makefile in this directory for more information on the standard build targets and compile-time flags.

Building a kernel is a somewhat more involved process. See build(7), config(8), and http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html for more information.

Note: If you want to build and install the kernel with the buildkernel and installkernel targets, you might need to build world before. More information is available in the handbook.

The kernel configuration files reside in the sys/<arch>/conf sub-directory. GENERIC is the default configuration used in release builds. NOTES contains entries and documentation for all possible devices, not just those commonly used.

Source Roadmap:

bin				System/user commands.

cddl			Various commands and libraries under the Common Development  
				and Distribution License.

contrib			Packages contributed by 3rd parties.

crypto			Cryptography stuff (see crypto/README).

etc				Template files for /etc.

gnu				Various commands and libraries under the GNU Public License.  
				Please see gnu/COPYING* for more information.

include			System include files.

kerberos5		Kerberos5 (Heimdal) package.

lib				System libraries.

libexec			System daemons.

release			Release building Makefile & associated tools.

rescue			Build system for statically linked /rescue utilities.

sbin			System commands.

secure			Cryptographic libraries and commands.

share			Shared resources.

sys				Kernel sources.

tests			Regression tests which can be run by Kyua.  See tests/README
				for additional information.

tools			Utilities for regression testing and miscellaneous tasks.

usr.bin			User commands.

usr.sbin		System administration commands.

For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see:

http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/synching.html