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vangyzen e18b1f330a VirtIO SCSI: validate seg_max on attach
Until r349278, bhyve presented a seg_max to the guest that was too large.
Detect this case and clamp it to the virtqueue size.  Otherwise, we would
fail the "too many segments to enqueue" assertion in virtqueue_enqueue().

I hit this by running a guest with a MAXPHYS of 256 KB.

Reviewed by:	bryanv cem
MFC after:	1 week
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D20703
2019-06-22 01:20:45 +00:00
bin Fix .depend files to work for build tools. 2019-06-15 17:08:13 +00:00
cddl DTrace: add a top level makefile to the new test suit 2019-06-09 22:45:07 +00:00
contrib The variable names in the description of the port number usage is 2019-06-20 12:38:41 +00:00
crypto Complete LOCAL_PEERCRED support. Cache pid of the remote process in the 2019-05-30 14:24:26 +00:00
etc random(4): Add regression tests for uint128 implementation, Chacha CTR 2019-06-17 14:59:45 +00:00
gnu csu: Add proper .depend tracking for each object. 2019-06-15 17:08:39 +00:00
include Move/rename the sys/pwm.h header file to dev/pwm/pwmc.h. The file contains 2019-06-15 19:46:59 +00:00
kerberos5 Add WITH_PIE knob to build Position Independent Executables 2019-02-15 22:22:38 +00:00
lib Add PROT_MAX to the HISTORY section. 2019-06-20 21:52:30 +00:00
libexec rc.d/motd: Update motd more robustly 2019-06-21 02:37:54 +00:00
release sys: Remove DEV_RANDOM device option 2019-06-21 00:16:30 +00:00
rescue rescue: set NO_SHARED in Makefile 2018-11-19 22:18:18 +00:00
sbin Add "tcpmss" opcode to match the TCP MSS value. 2019-06-21 10:54:51 +00:00
secure Merge OpenSSL 1.1.1c. 2019-05-28 21:54:12 +00:00
share Do some general cleanup and light wordsmithing. 2019-06-21 15:12:17 +00:00
stand Tell loader to ignore newer features enabled on the root pool. 2019-06-19 21:10:13 +00:00
sys VirtIO SCSI: validate seg_max on attach 2019-06-22 01:20:45 +00:00
targets Remove kgzip and kgzldr. 2019-05-24 05:34:21 +00:00
tests random(4): Fortuna: allow increased concurrency 2019-06-17 20:29:13 +00:00
tools Mount and unmount devfs around calls to add packages. 2019-06-21 03:49:36 +00:00
usr.bin top(1): Don't show the swap line when there are no swap devices 2019-06-20 15:44:43 +00:00
usr.sbin bhyve: Fix vtscsi maximum segment config 2019-06-21 18:57:33 +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
.cirrus.yml Cirrus-CI: pass OVMF env var to test script for upcoming changes 2019-04-11 13:01:26 +00:00
.clang-format Add a basic clang-format configuration file 2019-06-07 15:23:52 +00:00
.gitattributes Add a basic clang-format configuration file 2019-06-07 15:23:52 +00:00
.gitignore Update vendor/libarchive/dist to git 614110e76d9dbb9ed3e159a71cbd75fa3b23efe3 2019-06-11 23:16:13 +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/reformat maintainer entries that I am a part of 2019-04-29 18:48:43 +00:00
Makefile Modernize the MAKE_JUST_KERNELS hint in the top-level makefile. 2019-05-24 15:45:43 +00:00
Makefile.inc1 Add head(1) to native-xtools so that it can be used in qemu-user jails 2019-06-20 13:24:58 +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 Remove sys/capability.h for the third time 2019-06-18 14:13:52 +00:00
README README: add generic notes about GENERIC and NOTES 2018-06-17 19:44:24 +00:00
README.md Update vendor/libarchive/dist to git 614110e76d9dbb9ed3e159a71cbd75fa3b23efe3 2019-06-11 23:16:13 +00:00
UPDATING Fixup UPDATING text for r349253 2019-06-21 00:33:45 +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.

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.

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
		all possible entries.

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:

https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/current-stable.html