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Eric Joyner 225eae1bb7 iflib: return ENETDOWN when the network device is down
From Jake:
iflib_if_transmit returns ENOBUFS when the device is down, or when the
link isn't active.

This was changed in r308792 from return (0), so that the function
correctly reports an error that it was unable to transmit.

However, using ENOBUFS can cause some network applications to produce
the following or similar errors:

"ping: sendto: No buffer space available"

This is a bit confusing as the real cause of the issue is that the
network device is down.

Replace the ENOBUFS return with ENETDOWN to indicate more clearly that
the reason for the failure to send is due to the network device is
offline.

This will cause the error message to be reported as

"ping: sendto: Network is down"

Submitted by:	Jacob Keller <jacob.e.keller@intel.com>
Reviewed by:	shurd@, sbruno@, bz@
MFC after:	1 week
Sponsored by:	Intel Corporation
Differential Revision:	https://reviews.freebsd.org/D19652
2019-03-28 20:46:45 +00:00
bin .Xr trim(8) from dd(1). 2019-03-26 15:44:06 +00:00
cddl Ensure that we use a 64-bit value for the last mmap() argument. 2019-03-20 23:35:15 +00:00
contrib readelf: add newline after dumping dynamic FLAGS / FLAGS_1 2019-03-28 17:30:47 +00:00
crypto Add workaround for a QoS-related bug in VMWare Workstation. 2019-03-27 15:17:29 +00:00
etc Compile and install most of the googletest examples 2019-03-11 19:50:44 +00:00
gnu Apply WITH_PIE changes to other binutils components 2019-03-25 01:18:26 +00:00
include Add verifying manifest loader for mac_veriexec 2019-02-26 06:17:23 +00:00
kerberos5 Add WITH_PIE knob to build Position Independent Executables 2019-02-15 22:22:38 +00:00
lib Fix VGLLine() in depths > 8. 2019-03-28 14:21:22 +00:00
libexec revert r341429 "disable BIND_NOW in libc, libthr, and rtld" 2019-03-28 02:12:32 +00:00
release Bump the IMAGE_SIZE for arm64 SoC images to prevent failures due 2019-03-21 14:17:55 +00:00
rescue rescue: set NO_SHARED in Makefile 2018-11-19 22:18:18 +00:00
sbin Distinguish between lseek errors and read errores. 2019-03-28 18:20:47 +00:00
secure Add workaround for a QoS-related bug in VMWare Workstation. 2019-03-27 15:17:29 +00:00
share Spam CXXFLAGS with -I${DESTDIR}/usr/include/private, instead of GTEST_CXXFLAGS 2019-03-28 17:22:31 +00:00
stand stand: remove CLANG_NO_IAS from zfsldr 2019-03-26 20:32:05 +00:00
sys iflib: return ENETDOWN when the network device is down 2019-03-28 20:46:45 +00:00
targets retire LINKER_FEATURES filter flag 2018-11-12 20:44:22 +00:00
tests Skip this test if if_tap module is not available 2019-03-28 16:17:33 +00:00
tools revert r302146: makeroot: zero out subsecond component of time= keywords 2019-03-27 17:28:23 +00:00
usr.bin dtc(1): Update to 1a79f5f26631 2019-03-28 03:48:51 +00:00
usr.sbin Make the "KB/s" field one character shorter (by reducing the precision) 2019-03-28 20:16:19 +00:00
.arcconfig callsign isn't required anymore 2016-09-29 06:19:45 +00:00
.arclint arc lint: ignore /tests/ in chmod 2017-12-19 03:38:06 +00:00
.gitattributes MK_ZFS -> {MK_ZFS|MK_LOADER_ZFS}, this is so we can diable userland / kernel 2019-01-05 22:45:20 +00:00
.gitignore Ignore _.universe-toolchain file. 2018-07-01 13:50:37 +00:00
COPYRIGHT Happy New Year 2019! 2019-01-01 00:25:25 +00:00
LOCKS LOCKS: update current locks 2018-06-09 03:08:04 +00:00
MAINTAINERS Update maintainers for libunwind and lldb. 2019-03-16 13:26:42 +00:00
Makefile Update comment about 'universe' disk usage 2018-11-10 19:09:48 +00:00
Makefile.inc1 pkgbase: Use uname as ABI_FILE 2019-03-27 17:55:39 +00:00
Makefile.libcompat Use ...-freebsd13.0 in -target strings. 2018-11-12 16:55:20 +00:00
Makefile.sys.inc AUTO_OBJ: For all top-level targets enforce using an OBJDIR. 2017-12-05 21:29:47 +00:00
ObsoleteFiles.inc Set tentative merge date, and bump __FreeBSD_version. 2019-03-04 19:23:11 +00:00
README README: add generic notes about GENERIC and NOTES 2018-06-17 19:44:24 +00:00
README.md README: add generic notes about GENERIC and NOTES 2018-06-17 19:44:24 +00:00
UPDATING Add UPDATING note for geom_uzip(4)/xz, and bump geom_uzip(4) man page date. 2019-03-23 10:13:01 +00:00

FreeBSD Source:

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

FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. A large community has continually developed it for more than thirty years. Its advanced networking, security, and storage features have made FreeBSD the platform of choice for many of the busiest web sites and most pervasive embedded networking and storage devices.

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), config(8), https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html, and https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html for more information, including setting make(1) variables.

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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.
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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.

stand		Boot loader sources.

sys		Kernel sources.

sys/<arch>/conf Kernel configuration files. GENERIC is the configuration
		used in release builds. NOTES contains documentation of
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tests		Regression tests which can be run by Kyua.  See tests/README
		for additional information.

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usr.bin		User commands.

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