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Vincenzo Maffione 3e11768ee1 bhyve: add backend rx backpressure to virtio-net 
If a VM is flooded with more ingress packets than the guest OS
can handle, the current virtio-net code will keep reading those
packets and drop most of them as no space is available in the
receive queue. This is an undesirable receive livelock, which
is a waste of CPU and memory resources and potentially opens to
DoS attacks.
With this change, virtio-net uses the new netbe_rx_disable()
function to disable ingress operation in the backend while the
guest is short on RX buffers. Once the guest makes more buffers
available to the RX virtqueue, ingress operation is enabled again
by calling netbe_rx_enable().

Reviewed by:	bryanv, jhb
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D20987
2019-11-03 19:02:32 +00:00
..
ac various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
accton General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
acpi Merge ACPICA 20191018. 2019-10-19 14:56:44 +00:00
adduser various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
amd Convert amd newvers to using newvers.sh -v. 2019-05-23 17:18:56 +00:00
ancontrol spdx: initial adoption of licensing ID tags. 2017-11-18 14:26:50 +00:00
apm DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
apmd Stop linking to libl by specifying we do not need yywrap 2019-09-10 07:23:01 +00:00
arp Remove infrastructure for token-ring networks. 2018-03-28 23:33:26 +00:00
audit DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
auditd Move OpenBSM to CONFS 2018-08-11 13:23:09 +00:00
auditdistd DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
auditreduce DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
authpf DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
autofs autofs: Fix autounmountd's printing of mount time. 2019-08-09 02:20:26 +00:00
bhyve bhyve: add backend rx backpressure to virtio-net 2019-11-03 19:02:32 +00:00
bhyvectl style(9) remove unnecessary blank tabs. 2018-06-13 03:35:24 +00:00
bhyveload usr.sbin/bhyveload: don't leak an fd if a device can't be opened 2019-07-12 18:38:18 +00:00
binmiscctl Improve the binmiscctl manual page 2018-07-20 22:50:21 +00:00
blacklistctl DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
blacklistd Move blacklistd.conf to usr.sbin/blacklistd/ 2018-07-31 16:39:38 +00:00
bluetooth iwmbtfw(8): Fix compilation on platforms using gcc. 2019-08-18 23:10:07 +00:00
boot0cfg Remove deprecated GEOM classes 2019-08-13 20:06:55 +00:00
bootparamd DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
bsdconfig Remove iBCS2, part1: userspace 2018-12-19 21:56:54 +00:00
bsdinstall bsdinstall: fix ESP detection for auto ZFS layout 2019-10-09 05:28:10 +00:00
bsnmpd No need for each bsnmpd(1) module to open connection to syslog 2019-06-21 07:45:58 +00:00
btxld Explicitly ignore return value from remove. We wouldn't do anything 2017-12-28 05:33:19 +00:00
camdd Fix uninitialized variable in camdd 2019-06-09 02:06:31 +00:00
cdcontrol DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
certctl certctl(8): let one blacklist based on hashed filenames 2019-10-03 20:45:52 +00:00
chkgrp various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
chown Handle overflow of uid or gid in arguments for chown 2018-09-26 18:40:57 +00:00
chroot chroot.8: Add examples & clean up 2019-03-14 14:34:36 +00:00
ckdist various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
clear_locks various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
config config: do not link against libl, it is not needed 2019-09-10 07:14:39 +00:00
cpucontrol cpucontrol: check for the supposed firmware file type and skip 2019-01-11 08:35:49 +00:00
crashinfo Support compressed crash dumps in crashinfo(8). 2018-07-23 18:08:56 +00:00
cron cron: add log suppression and mail suppression for successful runs 2019-09-25 02:37:40 +00:00
crunch crunch: remove rsh and rlogin from example config file 2019-08-13 15:23:14 +00:00
ctladm Add device temperature reporting into CTL. 2019-07-26 03:49:16 +00:00
ctld Stop linking to libl by specifying we do not need yywrap 2019-09-10 07:28:27 +00:00
cxgbetool cxgbetool(8): Add a subaction (tcbrss <n>) that can be used with "pass" 2018-10-27 05:26:09 +00:00
daemon Bump .Dd for earlier update (should have been part of r353024). 2019-10-02 23:19:34 +00:00
dconschat spdx: initial adoption of licensing ID tags. 2017-11-18 14:26:50 +00:00
devctl Fix gcc warning about shadowed global. 2019-04-05 20:12:19 +00:00
devinfo devinfo_init() returns an errno, but doesn't set errno, so the error 2018-05-30 15:08:59 +00:00
diskinfo Sanity check media size and sector counts to ensure that we don't 2018-01-06 12:34:03 +00:00
dumpcis Remove All Rights Reserved 2019-02-05 21:37:34 +00:00
editmap DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
edquota General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
eeprom various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
efibootmgr efibootmgr(8): fix markup and style issues 2019-09-25 21:23:30 +00:00
efidp Regularize the Netflix copyright 2019-02-04 21:28:25 +00:00
efivar Document the efivar --load-option option 2019-03-07 00:01:28 +00:00
etcupdate Unbreak etcupdate(8) and mergemaster(8) after r352950 2019-10-02 12:46:28 +00:00
extattr various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
extattrctl various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
fdcontrol Tag 'a' case as one we're intentionally falling through to 2018-01-05 07:28:48 +00:00
fdformat fdformat is a sysadmin command and thus its man page should be in 2017-12-05 05:02:46 +00:00
fdread various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
fdwrite SPDX: use the Beerware identifier. 2017-11-30 20:33:45 +00:00
fifolog various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
flowctl various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
fmtree mtree: Fix -f -f not considering type changes. 2019-09-12 18:44:48 +00:00
freebsd-update freebsd-update: Add updatesready' and showconfig' commands 2019-09-24 20:49:33 +00:00
fstyp Drop "All rights reserved" from the files I own 2019-03-11 22:23:56 +00:00
ftp-proxy DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
fwcontrol Fix various -Wpointer-compare warnings 2019-10-08 21:14:09 +00:00
getfmac various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
getpmac various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
gpioctl gpioctl.8: Fix man page section 2018-06-06 18:52:33 +00:00
gssd * Handle SIGPIPE in gssd 2019-02-21 01:30:37 +00:00
gstat - Add CSV output to gstat via -C flag. 2018-08-21 11:22:49 +00:00
hyperv DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
i2c Add a new 'tr' (transfer) mode to i2c(8) to support more i2c controllers. 2019-05-22 21:06:10 +00:00
ifmcstat bits is never null when we call ot. Add an assert to that effect and 2018-01-05 07:28:58 +00:00
inetd Remove all the RELEASE_CRUNCH instances that partially disable IPSEC 2019-07-15 14:19:39 +00:00
iostat In iostat(8) output, skip the decimal point and the fractional part 2019-06-16 17:32:05 +00:00
iovctl DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
ip6addrctl pkgbase: Put a lot of binaries and lib in FreeBSD-runtime 2019-09-05 14:13:08 +00:00
ipfwpcap Buildfix for GCC after r334277. 2018-05-28 09:41:44 +00:00
iscsid iscsi: simplify the capsicumization 2018-11-30 19:40:16 +00:00
jail add ability to set watchdog timeout for a shutdown 2019-10-03 11:23:10 +00:00
jexec various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
jls various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
kbdcontrol Stop linking to libl by specifying we do not need yywrap 2019-09-10 07:26:38 +00:00
kbdmap Silence a CI warning regarding the use of strcpy(). 2019-01-22 13:11:15 +00:00
keyserv DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
kgmon Free zbuf when kflag is true too. 2017-12-28 05:34:04 +00:00
kldxref pkgbase: Put a lot of binaries and lib in FreeBSD-runtime 2019-09-05 14:13:08 +00:00
lastlogin A single comma was missing to separate the "see also" items in 2018-10-20 17:22:04 +00:00
lpr Fix clang -Wcast-qual issues 2019-05-04 02:09:30 +00:00
lptcontrol various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
mailstats DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
mailwrapper Revert r326844 2018-01-02 16:50:57 +00:00
makefs buf: Add B_INVALONERR flag to discard data 2019-09-11 21:24:14 +00:00
makemap DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
manctl spdx: initial adoption of licensing ID tags. 2017-11-18 14:26:50 +00:00
memcontrol various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
mergemaster Unbreak etcupdate(8) and mergemaster(8) after r352950 2019-10-02 12:46:28 +00:00
mfiutil Make mfiutil show progress print out the elapsed time estimate in a 2018-10-13 02:21:23 +00:00
mixer mixer(8): Report an error if the passed value is an empty string 2019-08-25 17:55:31 +00:00
mld6query Remove the USE_RFC2292BIS option and reap dead code 2019-07-22 20:11:33 +00:00
mlx5tool Use size_t for byte_to_write variable when comparing to eeprom_info_out_len 2019-10-02 10:58:27 +00:00
mlxcontrol various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
mount_smbfs DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
mountd Add a reference to the NFSv3 RFC. 2019-08-08 21:08:13 +00:00
moused Remove mse(4) from tree 2018-10-22 02:34:10 +00:00
mpsutil mpsutil slot set status 2019-09-04 13:47:38 +00:00
mptable various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
mptutil mptutil: emit a warning on big-endian architectures 2019-07-22 17:25:35 +00:00
mtest mtest: build with WARNS=3 2018-05-19 20:57:22 +00:00
ndiscvt Stop linking to libl by specifying we do not need yywrap 2019-09-10 07:28:27 +00:00
ndp Update the "flag" for draft-ietf-6man-ipv6only-flag. 2018-11-03 18:03:24 +00:00
newsyslog Use correct filename in newsyslog.conf 2019-09-17 20:05:06 +00:00
nfscbd DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
nfsd nfsd.8: Fix mandoc -Tlint and igor warnings 2019-05-09 19:03:52 +00:00
nfsdumpstate Add #ifdef INET6 around declaration of nbuf. 2019-04-28 22:37:59 +00:00
nfsrevoke DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
nfsuserd Delete the BUGS entry related to failing when jails are enabled. 2019-04-06 22:14:03 +00:00
ngctl Replace complicated expression to disable libedit when no libthr is being built 2019-07-15 14:23:51 +00:00
nghook DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
nmtree DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
nologin DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
nscd Workaround for nscd(8) failure with large entries. 2019-01-17 20:01:06 +00:00
ntp Reduce calls to close(2) at startup through the use of closefrom(2). 2019-09-19 14:45:04 +00:00
nvram use .Mt to mark up email addresses consistently (part2) 2014-06-20 09:57:27 +00:00
ofwdump DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
pciconf Fix the botched field ordering in the last commit. While here, fix 2019-10-13 05:11:53 +00:00
periodic periodic: replace "tty" with "test -t 0" 2019-08-19 01:14:11 +00:00
pkg Rework the logic for installing the pkg(8) configuration. 2019-10-08 18:58:23 +00:00
pmc pmc: Fix stack std::string lifetime 2019-05-22 01:22:33 +00:00
pmcannotate Teach pmcannotate about $TMPDIR and _PATH_TMP 2018-05-18 14:14:04 +00:00
pmccontrol restore pmccontrol -L behavior on x86 2018-09-24 19:06:09 +00:00
pmcstat Regularize the Netflix copyright 2019-02-04 21:28:25 +00:00
pmcstudy Replace -Werror with ${WERROR} in pmcstudy 2019-08-25 22:06:26 +00:00
pnfsdscopymr Fix the err() arguments for a nfssvc(8) failure. 2018-08-08 20:30:12 +00:00
pnfsdsfile Document the new "-m" command line option for pnfsdsfile(8). 2018-07-01 17:51:52 +00:00
pnfsdskill Document the "-f" option added to pnfsdskill(8) by r336176. 2018-07-10 18:44:44 +00:00
pnpinfo DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
portsnap Remove INDEX-10 reference, as 10.x is now EoL. 2019-04-16 14:07:14 +00:00
powerd powerd(8): allow to force a method of battery state query 2019-01-06 02:39:03 +00:00
ppp Retire the -DRELEASE_CRUNCH define. 2019-07-12 06:19:25 +00:00
pppctl pppctl88) Avoid strcpy() copies on overlapping string. 2018-01-29 14:23:44 +00:00
praliases DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
praudit praudit(1): add tests 2018-06-17 17:31:16 +00:00
prometheus_sysctl_exporter DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
pstat General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
pw Remove an uneeded indentation introduced in r286196 to silence gcc warnging 2019-05-25 21:57:01 +00:00
pwd_mkdb pkgbase: Put a lot of binaries and lib in FreeBSD-runtime 2019-09-05 14:13:08 +00:00
pwm Oops, it seems I left out the word 'cycle', fix it. 2019-06-18 02:27:30 +00:00
quot Normally when an attempt is made to mount a UFS/FFS filesystem whose 2018-12-06 00:09:39 +00:00
quotaon General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
rarpd SPDX: mostly fixes to previous changes. 2017-12-13 16:13:17 +00:00
repquota General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
rip6query General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
rmt Fix missing files in METALOG with -DNO_ROOT 2018-06-29 21:15:17 +00:00
route6d Use the right variable when updating interface routes. 2018-08-08 20:15:40 +00:00
rpc.lockd userland: Fix several typos and minor errors 2017-12-27 03:23:01 +00:00
rpc.statd - Revert WARNS to 2 because of mismatch between (xdrproc_t) and xdr_void(). 2019-09-21 13:34:06 +00:00
rpc.umntall various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
rpc.yppasswdd Increase YPMAXRECORD to 16M to be compatible with Linux. 2019-08-12 20:27:33 +00:00
rpc.ypupdated Increase YPMAXRECORD to 16M to be compatible with Linux. 2019-08-12 20:27:33 +00:00
rpc.ypxfrd spdx: initial adoption of licensing ID tags. 2017-11-18 14:26:50 +00:00
rpcbind Plug a possible memory leak. 2018-03-19 05:49:26 +00:00
rrenumd by specifyng we do not use yywrap we can avoid linking to libl and liby 2019-09-10 07:20:32 +00:00
rtadvctl Fix grammar. 2019-03-05 02:53:41 +00:00
rtadvd Remove obsolete compatibility code from rtadvd. 2019-07-17 16:50:53 +00:00
rtprio various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
rtsold rtsol: Use vwarnx(3) to log messages to standard error. 2019-02-27 18:13:41 +00:00
rwhod capsicum: use a new capsicum helpers in tools 2018-11-04 19:24:49 +00:00
sa various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
sendmail DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
service Use "$@" instead of $* to cope with parameters that have spaces in 2018-06-13 06:11:04 +00:00
services_mkdb pkgbase: Put a lot of binaries and lib in FreeBSD-runtime 2019-09-05 14:13:08 +00:00
sesutil Check element type before setting LEDs. 2019-02-04 01:24:10 +00:00
setfib General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
setfmac various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
setpmac various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
simple_httpd Move httpd to simple_httpd... 2019-10-01 18:14:37 +00:00
smbmsg various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
snapinfo various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
spi Add an example for displaying the manufacturer and size info from a 2018-06-23 23:08:25 +00:00
spkrtest various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
spray spray: fix the spelling in an output string 2018-03-05 16:13:29 +00:00
syslogd log daemon.info to /var/log/daemon.log by default 2019-09-17 20:03:20 +00:00
sysrc Update the spelling of my name 2019-04-22 17:52:46 +00:00
tcpdchk DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
tcpdmatch DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
tcpdrop Use uintptr_t alone when assigning to kvaddr_t variables. 2018-07-10 13:03:06 +00:00
tcpdump DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
tests
traceroute pkgbase: Put a lot of binaries and lib in FreeBSD-runtime 2019-09-05 14:13:08 +00:00
traceroute6 pkgbase: Put a lot of binaries and lib in FreeBSD-runtime 2019-09-05 14:13:08 +00:00
trim trim(8): emit more user-friendly error message in verbose mode. 2019-03-15 14:42:23 +00:00
trpt trpt(8): Clean up build hack to detect ancient compiler 2018-02-16 20:46:44 +00:00
tzsetup tzsetup: upgrade to zone1970.tab 2019-07-17 06:17:27 +00:00
uathload various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
uefisign Fix alignment issue in uefisign 2018-12-19 22:47:37 +00:00
ugidfw various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
uhsoctl Use correct type for IOCTL request argument. 2018-11-02 22:23:25 +00:00
unbound Check that /etc/resolv.conf exists before trying to read it. 2018-11-27 09:46:01 +00:00
usbconfig Implement detach_kernel_driver command in usbconfig(8). 2019-08-16 21:17:56 +00:00
usbdump Fix parsing of corrupt data in usbdump(8). Check that the transfer 2019-06-25 13:15:29 +00:00
utx various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
valectl add valectl to the system commands 2019-10-31 21:01:34 +00:00
vidcontrol Fix restoring the geometry when recovering from an error. Just restore the 2019-04-08 04:07:37 +00:00
vigr
vipw General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
wake various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
watch Revert r327005 - SPDX tags for license similar to BSD-2-Clause. 2017-12-20 20:25:28 +00:00
watchdogd various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
wlandebug Revert r344211: wlandebug: disable PIE to fix build failure 2019-02-25 18:27:19 +00:00
wpa pkgbase: Add a FreeBSD-hostapd package 2019-07-19 15:09:00 +00:00
yp_mkdb spdx: initial adoption of licensing ID tags. 2017-11-18 14:26:50 +00:00
ypbind various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
ypldap Increase YPMAXRECORD to 16M to be compatible with Linux. 2019-08-12 20:27:33 +00:00
yppoll various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
yppush Increase YPMAXRECORD to 16M to be compatible with Linux. 2019-08-12 20:27:33 +00:00
ypserv Increase YPMAXRECORD to 16M to be compatible with Linux. 2019-08-12 20:27:33 +00:00
ypset various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
zic DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
zonectl DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
zzz
Makefile add valectl to the system commands 2019-10-31 21:01:34 +00:00
Makefile.amd64 Remove kgzip and kgzldr. 2019-05-24 05:34:21 +00:00
Makefile.arm
Makefile.arm64
Makefile.i386 Remove kgzip and kgzldr. 2019-05-24 05:34:21 +00:00
Makefile.inc
Makefile.mips
Makefile.powerpc Create a new MACHINE_ARCH for Freescale PowerPC e500v2 2016-10-22 01:57:15 +00:00
Makefile.riscv Build ofwdump on riscv. 2018-07-24 20:20:17 +00:00
Makefile.sparc64