release/doc/en_US.ISO8859-1/relnotes/article.xml

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   4 <!ENTITY % release PUBLIC "-//FreeBSD//ENTITIES Release Specification//EN" "release.ent">
   5  %release;
   6 <!ENTITY % sponsor PUBLIC "-//FreeBSD//ENTITIES Sponsor Specification//EN" "sponsor.ent">
   7  %sponsor;
   8 <!ENTITY % vendor PUBLIC "-//FreeBSD//ENTITIES Vendor Specification//EN" "vendor.ent">
   9  %vendor;
  10 <!ENTITY security SYSTEM "../../share/xml/security.xml">
  11 <!ENTITY errata SYSTEM "../../share/xml/errata.xml">
  12 ]>
  13 <article xmlns="http://docbook.org/ns/docbook"
  14   xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
  15
  16   <info>
  17     <title>&os; &release.current; Release Notes</title>
  18
  19     <author>
  20       <orgname>The &os; Project</orgname>
  21     </author>
  22
  23     <pubdate>$FreeBSD$</pubdate>
  24
  25     <!-- Last rev: 288943 -->
  26
  27     <copyright>
  28       <year>2017</year>
  29       <holder role="mailto:doc@FreeBSD.org">The &os; Documentation
  30         Project</holder>
  31     </copyright>
  32
  33     <legalnotice xml:id="trademarks" role="trademarks">
  34       &tm-attrib.freebsd;
  35       &tm-attrib.ibm;
  36       &tm-attrib.ieee;
  37       &tm-attrib.intel;
  38       &tm-attrib.sparc;
  39       &tm-attrib.general;
  40     </legalnotice>
  41
  42     <abstract>
  43       <para>The release notes for &os; &release.current; contain
  44         a summary of the changes made to the &os; base system on the
  45         &release.branch; development line.  This document lists
  46         applicable security advisories that were issued since the last
  47         release, as well as significant changes to the &os; kernel and
  48         userland.  Some brief remarks on upgrading are also
  49         presented.</para>
  50     </abstract>
  51   </info>
  52
  53   <sect1 xml:id="intro">
  54     <title>Introduction</title>
  55
  56     <para>This document contains the release notes for &os;
  57       &release.current;.  It describes recently added, changed, or
  58       deleted features of &os;.  It also provides some notes on
  59       upgrading from previous versions of &os;.</para>
  60
  61     <para releasetype="current">The &release.type; distribution to
  62       which these release notes apply represents the latest point
  63       along the &release.branch; development branch since
  64       &release.branch; was created.  Information regarding pre-built,
  65       binary &release.type; distributions along this branch can be
  66       found at <uri
  67         xlink:href="&release.url;">&release.url;</uri>.</para>
  68
  69     <para releasetype="snapshot">The &release.type; distribution to
  70       which these release notes apply represents a point along the
  71       &release.branch; development branch between &release.prev; and
  72       the future &release.next;.  Information regarding pre-built,
  73       binary &release.type; distributions along this branch can be
  74       found at <uri
  75         xlink:href="&release.url;">&release.url;</uri>.</para>
  76
  77     <para releasetype="release">This distribution of &os;
  78       &release.current; is a &release.type; distribution.  It can be
  79       found at <uri xlink:href="&release.url;">&release.url;</uri> or
  80       any of its mirrors.  More information on obtaining this (or
  81       other) &release.type; distributions of &os; can be found in the
  82       <link
  83         xlink:href="&url.books.handbook;/mirrors.html"><quote>Obtaining
  84           &os;</quote> appendix</link> to the <link
  85         xlink:href="&url.books.handbook;/">&os;
  86         Handbook</link>.</para>
  87
  88     <para>All users are encouraged to consult the release errata
  89       before installing &os;.  The errata document is updated with
  90       <quote>late-breaking</quote> information discovered late in the
  91       release cycle or after the release.  Typically, it contains
  92       information on known bugs, security advisories, and corrections
  93       to documentation.  An up-to-date copy of the errata for &os;
  94       &release.current; can be found on the &os; Web site.</para>
  95
  96     <para>This document describes the most user-visible new or changed
  97       features in &os; since &release.prev;.  In general, changes
  98       described here are unique to the &release.branch; branch unless
  99       specifically marked as &merged; features.</para>
 100
 101     <para>Typical release note items document recent security
 102       advisories issued after &release.prev;, new drivers or hardware
 103       support, new commands or options, major bug fixes, or
 104       contributed software upgrades.  They may also list changes to
 105       major ports/packages or release engineering practices.  Clearly
 106       the release notes cannot list every single change made to &os;
 107       between releases; this document focuses primarily on security
 108       advisories, user-visible changes, and major architectural
 109       improvements.</para>
 110   </sect1>
 111
 112   <sect1 xml:id="upgrade">
 113     <title>Upgrading from Previous Releases of &os;</title>
 114
 115     <para arch="amd64,i386">Binary upgrades between RELEASE versions
 116       (and snapshots of the various security branches) are supported
 117       using the &man.freebsd-update.8; utility.  The binary upgrade
 118       procedure will update unmodified userland utilities, as well as
 119       unmodified GENERIC kernels distributed as a part of an official
 120       &os; release.  The &man.freebsd-update.8; utility requires that
 121       the host being upgraded have Internet connectivity.</para>
 122
 123     <para>Source-based upgrades (those based on recompiling the &os;
 124       base system from source code) from previous versions are
 125       supported, according to the instructions in
 126       <filename>/usr/src/UPDATING</filename>.</para>
 127
 128     <important>
 129       <para>Upgrading &os; should only be attempted after backing up
 130         <emphasis>all</emphasis> data and configuration files.</para>
 131     </important>
 132   </sect1>
 133
 134   <sect1 xml:id="security-errata">
 135     <title>Security and Errata</title>
 136
 137     <para>This section lists the various Security Advisories and
 138       Errata Notices since &release.prev;.</para>
 139
 140     <sect2 xml:id="security">
 141       <title>Security Advisories</title>
 142
 143       &security;
 144     </sect2>
 145
 146     <sect2 xml:id="errata">
 147       <title>Errata Notices</title>
 148
 149       &errata;
 150     </sect2>
 151   </sect1>
 152
 153   <sect1 xml:id="userland">
 154     <title>Userland</title>
 155
 156     <para>This section covers changes and additions to userland
 157       applications, contributed software, and system utilities.</para>
 158
 159     <sect2 xml:id="userland-config">
 160       <title>Userland Configuration Changes</title>
 161
 162       <para revision="313203">The &man.inetd.8; utility is now built
 163         without <literal>libwrap</literal> support when
 164         <literal>WITHOUT_TCP_WRAPPERS</literal> is set in
 165         &man.src.conf.5;.</para>
 166
 167       <para revision="316045">The &man.libthr.3; library and related
 168         files are now evaluated and removed by the
 169         <literal>delete-old-libs</literal> target when upgrading the
 170         system if <literal>WITHOUT_LIBTHR</literal> is
 171         set in &man.src.conf.5;.</para>
 172
 173       <para revision="316423" contrib="sponsor" sponsor="&ff;">The
 174         <literal>WITH_LLD_AS_LD</literal> build knob has been added,
 175         which installs <application>LLD</application> as
 176         <filename>/usr/bin/ld</filename> if set.</para>
 177
 178       <para revision="318472" contrib="sponsor" sponsor="&ff;">
 179         <application>LDD</application> has been enabled by default and
 180         installed as <filename>/usr/bin/ld</filename> on
 181         &os;/&arch.arm64;.</para>
 182     </sect2>
 183
 184     <sect2 xml:id="userland-programs">
 185       <title>Userland Application Changes</title>
 186
 187       <para revision="305476" contrib="sponsor"
 188         sponsor="&ff;">Support for &man.blacklistd.8; has been added
 189         to <application>OpenSSH</application>.</para>
 190
 191       <para revision="308720" contrib="sponsor" sponsor="&gandi;">The
 192         &man.cron.8; utility has been updated to add support for
 193         including files within <filename
 194           class="directory">/etc/cron.d</filename> and <filename
 195           class="directory">/usr/local/etc/cron.d</filename> by
 196         default.</para>
 197
 198       <para revision="308721" contrib="sponsor" sponsor="&gandi;">The
 199         &man.syslogd.8; utility has been updated to add the
 200         <literal>include</literal> keyword which allows specifying
 201         a directory containing configuration files to be included in
 202         addition to &man.syslog.conf.5;.  The default
 203         &man.syslog.conf.5; has been updated to include <filename
 204           class="directory">/etc/syslog.d</filename> and <filename
 205           class="directory">/usr/local/etc/syslog.d</filename> by
 206         default.</para>
 207
 208       <para revision="308914">The &man.zfsbootcfg.8; utility has been
 209         added, providing one-time &man.boot.config.5;-style options
 210         for &man.zfsboot.8;.</para>
 211
 212       <para revision="315514" contrib="sponsor" sponsor="&yandex;">The
 213         &man.setkey.8; utility has been modified to show the runtime
 214         <acronym>NAT-T</acronym> configuration.  The
 215         <literal>-g</literal> and <literal>-t</literal> flags have
 216         been added, which list only global and virtual policies,
 217         respectively, when used with the <literal>-D</literal> and
 218         <literal>-P</literal> flags.</para>
 219
 220       <para revision="316098" contrib="sponsor"
 221         sponsor="&dellemc;">The &man.getaddrinfo.1; utility has been
 222         added, ported from NetBSD.</para>
 223
 224       <para revision="316944" contrib="sponsor"
 225         sponsor="&multiplay;">The &man.jail.8; utility has been
 226         updated to allow explicitly-assigned <acronym>IPv4</acronym>
 227         and <acronym>IPv6</acronym> addresses to be used within
 228         a jail.</para>
 229
 230       <para revision="317855">The &man.daemon.8; utility has been
 231         updated to allow redirecting &man.stdout.4; and &man.stderr.4;
 232         output to &man.syslog.3; or to a file.</para>
 233     </sect2>
 234
 235     <sect2 xml:id="userland-contrib">
 236       <title>Contributed Software</title>
 237
 238       <para revision="307729">&man.unbound.8; has been updated to
 239         version 1.5.10.</para>
 240
 241       <para revision="309511"><application>Subversion</application>
 242         has been updated to version 1.9.5.</para>
 243
 244       <para revision="309847">&man.file.1; has been updated to version
 245         5.29.</para>
 246
 247       <para revision="310490">The &man.amd.8; utility has been updated
 248         to version 6.2.</para>
 249
 250       <para revision="312336">The <acronym>CLDR</acronym> locales have
 251         been updated to version 30.0.3.  The unicode locales have been
 252         updated to version 9.0.0.</para>
 253
 254       <para revision="312517">&man.xz.1; has been updated to version
 255         5.2.3.</para>
 256
 257       <para revision="313537">&man.tcpdump.1; has been updated to
 258         version 4.9.0.</para>
 259
 260       <para revision="313795">&man.zlib.3; has been updated to version
 261         1.2.11.</para>
 262
 263       <para revision="313980"><application>openresolv</application>
 264         has been updated to version 3.9.0.</para>
 265
 266       <para revision="313680">The NetBSD test suite has been updated
 267         to the 01.11.2017_23.20 snapshot.</para>
 268
 269       <para revision="314278"><literal>libucl</literal> has been
 270         updated to version 20170219.</para>
 271
 272       <para revision="315432">&man.libarchive.3; has been updated to
 273         version 3.3.1.</para>
 274
 275       <para revision="315995">&man.dma.8; has been updated to the
 276         2017-02-10 snapshot.</para>
 277
 278       <para revision="316068">&man.ntpd.8; has been updated to version
 279         4.2.8p10.</para>
 280
 281       <para revision="316303"><application>ACPICA</application> has
 282         been updated to version 20170303.</para>
 283
 284       <para revision="316349">Timezone data files have been updated to
 285         version 2017b.</para>
 286
 287       <para revision="316420">&man.mandoc.1; has been updated to
 288         version 1.14.</para>
 289
 290       <para revision="316423"><application>Clang</application> has
 291         been updated to version 4.0.0.</para>
 292
 293       <para revision="316423"><application>LLVM</application> has
 294         been updated to version 4.0.0.</para>
 295
 296       <para revision="316423"><application>LLD</application> has
 297         been updated to version 4.0.0.</para>
 298
 299       <para revision="316423"><application>LLDB</application> has
 300         been updated to version 4.0.0.</para>
 301
 302       <para revision="316423"><application>compiler-rt</application>
 303         has been updated to version 4.0.0.</para>
 304
 305       <para revision="316423"><application>libc++</application> has
 306         been updated to version 4.0.0.</para>
 307
 308       <para revision="316957">&man.tcsh.1; has been updated to version
 309         6.20.00.</para>
 310
 311       <para revision="318239" contrib="sponsor"
 312         sponsor="&ff;">&man.blacklistd.8; has been updated to the
 313         20170503 snapshot.</para>
 314
 315       <para revision="318402" contrib="sponsor"
 316         sponsor="&ff;">&man.blacklistd.8; support for
 317         <application>OpenSSH</application> has been refined to adjust
 318         notification points to catch all authentication failures
 319         rather than only those caused by invalid login
 320         usernames.</para>
 321     </sect2>
 322
 323     <sect2 xml:id="userland-installer">
 324       <title>Installation and Configuration Tools</title>
 325
 326       <para revision="311686">The &man.bsdinstall.8; installer has
 327         been updated to include support for hidden wireless networks
 328         when configuring the &man.wlan.4; interface.</para>
 329     </sect2>
 330
 331     <sect2 xml:id="userland-rc">
 332       <title><filename class="directory">/etc/rc.d</filename>
 333         Scripts</title>
 334
 335       <para revision="310009" contrib="sponsor"
 336         sponsor="&fisglobal;">The <literal>jail_confwarn</literal>
 337         &man.rc.conf.5; entry has been added, which suppresses warning
 338         about obsolete per-&man.jail.8; configurations.</para>
 339     </sect2>
 340
 341     <sect2 xml:id="userland-periodic">
 342       <title><filename class="directory">/etc/periodic</filename>
 343         Scripts</title>
 344
 345       <para revision="317373">The default &man.periodic.conf.5; has
 346         been updated to include the
 347         <literal>anticongestion_sleeptime</literal> option,
 348         consolidating random sleeps in &man.periodic.8; scripts and
 349         replacing the <literal>daily_ntpd_avoid_congestion</literal>
 350         option.  The default value is 3600 seconds.</para>
 351
 352       <para revision="317857">The <filename>410.status-mfi</filename>
 353         &man.periodic.8; script has been added to monitor the status
 354         of &man.mfi.4; volumes.</para>
 355     </sect2>
 356
 357     <sect2 xml:id="userland-libraries">
 358       <title>Runtime Libraries and API</title>
 359
 360       <para revision="316039">The &man.kvm.close.3; function has been
 361         updated to return the accumulated error from previous
 362         &man.close.2; calls.</para>
 363
 364       <para revision="316613">The C standard library has been updated
 365         to make use of &man.reallocarray.3; for bounds
 366         checking.</para>
 367
 368       <para revision="317618" contrib="sponsor"
 369         sponsor="&dellemc;">The <function>clock_nanosleep()</function>
 370         system call has been added.  The
 371         <function>nanosleep()</function> system call is now a wrapper
 372         around <function>clock_nanosleep()</function>.</para>
 373
 374       <para revision="318121">The system libraries have been updated
 375         to make use of &man.reallocarray.3; for bounds
 376         checking.</para>
 377     </sect2>
 378
 379     <sect2 xml:id="userland-abi">
 380       <title>ABI Compatibility</title>
 381
 382       <para revision="309258">The type <literal>max_align_t</literal>
 383         is now defined for C11 compliance.</para>
 384
 385       <para revision="315274" contrib="sponsor"
 386         sponsor="&dellemc;">The
 387         <function>sem_clockwait_np()</function> library function has
 388         been added, which allows the caller to specify the reference
 389         clock and choose between absolute and relative mode.</para>
 390
 391       <para revision="315282">The <application>clang</application>
 392         <literal>nullability</literal> qualifiers have been added to
 393         the <literal>C</literal> library headers.</para>
 394
 395       <para revision="315282">Uses of the <acronym>GNU</acronym>
 396         <literal>__nonnull__</literal> attribute have been replaced
 397         with the more benign <application>Clang</application>
 398         nullability attributes.</para>
 399     </sect2>
 400
 401     <sect2 xml:id="userland-debug">
 402       <title>Userland Debugging</title>
 403
 404       <para revision="304499">&man.ptrace.2; now supports events for
 405         &man.vfork.2;, permitting reliable debugging across
 406         &man.vfork.2; invocations.</para>
 407
 408       <para revision="306786">Process core dumps now include the
 409         process ID (<acronym>PID</acronym>) and command line
 410         arguments.</para>
 411     </sect2>
 412   </sect1>
 413
 414   <sect1 xml:id="kernel">
 415     <title>Kernel</title>
 416
 417     <para>This section covers changes to kernel configurations, system
 418       tuning, and system control parameters that are not otherwise
 419       categorized.</para>
 420
 421     <sect2 xml:id="kernel-bugfix">
 422       <title>Kernel Bug Fixes</title>
 423
 424       <para revision="317434">The &man.ipf.4; packet filter has been
 425         updated to prevent <literal>keep state</literal> from
 426         incorrectly implying <literal>keep frags</literal>, matching
 427         the behavior documented in &man.ipf.5;.</para>
 428     </sect2>
 429
 430     <sect2 xml:id="kernel-config">
 431       <title>Kernel Configuration</title>
 432
 433       <para revision="315514" contrib="sponsor" sponsor="&yandex;">The
 434         <literal>IPSEC_NAT_T</literal> kernel configuration option has
 435         been removed.  Support for <acronym>NAT-T</acronym> is now
 436         enabled by default.</para>
 437
 438       <para revision="315514" contrib="sponsor" sponsor="&yandex;">The
 439         <literal>IPSEC_FILTERTUNNEL</literal> kernel option has been
 440         removed, which was deprecated by the
 441         <literal>net.inet.ipsec.filtertunnel</literal> sysctl.</para>
 442     </sect2>
 443
 444     <sect2 xml:id="kernel-modules">
 445       <title>Kernel Modules</title>
 446
 447       <para revision="307144">&man.cloudabi.4; has been updated to
 448         allow running 32-bit binaries within 64-bit userland
 449         environments when the kernel configuration file has the
 450         <literal>COMPAT_CLOUDABI32</literal> option present.</para>
 451
 452       <para revision="315514" contrib="sponsor" sponsor="&yandex;">The
 453         <literal>ipsec</literal> and <literal>tcpmd5</literal> kernel
 454         modules have been added.</para>
 455
 456       <para revision="316274" contrib="sponsor" sponsor="&yandex;">The
 457         &man.ipfw.4; packet filter has been updated to add support for
 458         named dynamic states.</para>
 459
 460       <para revision="316444" contrib="sponsor" sponsor="&yandex;">The
 461         <literal>ipfw_nptv6</literal> kernel module has been added,
 462         implementing Network Prefix Translation for
 463         <acronym>IPv6</acronym> as defined in <acronym>RFC</acronym>
 464         6296.</para>
 465
 466       <para revision="316446" contrib="sponsor" sponsor="&yandex;">The
 467         <literal>ipfw_nat64</literal> kernel module has been added,
 468         implementing stateless and stateful
 469         <acronym>NAT64</acronym>.</para>
 470
 471       <para revision="316660" contrib="sponsor" sponsor="&ff;">The
 472         &man.cfumass.4; device has been added, providing a storage
 473         frontend to <acronym>USB</acronym>
 474         <acronym>OTG</acronym>-capable hardware.</para>
 475
 476       <para revision="317045" contrib="sponsor" sponsor="&yandex;">The
 477         <literal>ipfw_pmod</literal> kernel module has been added,
 478         designed for modifying packets of any protocol.</para>
 479
 480       <note>
 481         <para>At present, only <acronym>TCP</acronym>
 482           <acronym>MSS</acronym> modification is implemented.</para>
 483       </note>
 484     </sect2>
 485
 486     <sect2 xml:id="kernel-sysctl">
 487       <title>System Tuning and Controls</title>
 488
 489       <para revision="315539">The
 490         <literal>vfs.root_mount_always_wait</literal> tunable has been
 491         added, which forces the kernel to wait for root mount holds
 492         even if the root device is already present.</para>
 493
 494       <para revision="316120" contrib="sponsor"
 495         sponsor="&dellemc;">When the system real time clock
 496         (<acronym>RTC</acronym>) is adjusted, such as by
 497         <function>clock_settime()</function>, sleeping threads are now
 498         awakened and absolute sleep times are reevaluated based on the
 499         new value of the RTC.</para>
 500     </sect2>
 501   </sect1>
 502
 503   <sect1 xml:id="drivers">
 504     <title>Devices and Drivers</title>
 505
 506     <para>This section covers changes and additions to devices and
 507       device drivers since &release.prev;.</para>
 508
 509     <sect2 xml:id="drivers-device">
 510       <title>Device Drivers</title>
 511
 512       <para revision="307768">The &man.jedec.ts.4; driver has been
 513         added, providing support for thermal sensors on memory
 514         modules.  The driver currently supports chips that are fully
 515         compliant with the <acronym>JEDEC</acronym>
 516         <acronym>JC</acronym> 42.4 specification.</para>
 517
 518       <para revision="308104">The &man.chromebook.platform.4; driver
 519         has been added, providing support for various Chromebook
 520         models.</para>
 521
 522       <para revision="308942">The &man.bytgpio.4; driver has been
 523         added, providing support for Intel&reg; Bay&nbsp;Trail&trade;
 524         SoC GPIO controllers.</para>
 525
 526       <para revision="312394"><filename>/dev/kmem</filename> no longer
 527         supports access via <function>mmap()</function>.  Consumers
 528         wishing to use <filename>/dev/kmem</filename> must use
 529         <function>read()</function> and
 530         <function>write()</function>.</para>
 531
 532       <para revision="306533" contrib="sponsor"
 533         sponsor="&chelsio;">&man.devctl.8; now supports a &quot;clear
 534         driver&quot; command as a complement to &quot;set
 535         driver&quot;.</para>
 536     </sect2>
 537
 538     <sect2 xml:id="drivers-storage">
 539       <title>Storage Drivers</title>
 540
 541       <para>&nbsp;</para>
 542     </sect2>
 543
 544     <sect2 xml:id="drivers-network">
 545       <title>Network Drivers</title>
 546
 547       <para revision="306660" contrib="sponsor"
 548         sponsor="&chelsio;">The &man.cxgbe.4; driver has been updated
 549         to provide support for Virtual Function devices
 550         (<acronym>VFs</acronym>) on Chelsio T4 and T5 adapters.</para>
 551
 552       <para revision="306661" contrib="sponsor"
 553         sponsor="&chelsio;">TCP connections using the TCP Offload
 554         Engine (<acronym>TOE</acronym>) on Chelsio T4+ adapters can
 555         now perform zero-copy sends via
 556         <function>aio_write()</function>.</para>
 557
 558       <para revision="306664" contrib="sponsor"
 559         sponsor="&chelsio;">The &man.cxgbev.4; driver has been added,
 560         providing support for Virtual Function devices
 561         (<acronym>VFs</acronym>) on Chelsio T4 and T5 adapters.</para>
 562
 563       <para revision="309377" contrib="sponsor"
 564         sponsor="&broadcom;">The &man.bnxt.4; driver has been added,
 565         providing support for Broadcom&reg; NetXtreme-C&trade; and
 566         NetXtreme-E&trade; devices.</para>
 567
 568       <para revision="309560" contrib="sponsor"
 569         sponsor="&chelsio;">The &man.cxgbe.4; driver now supports
 570         devices using T6-based adapters which support 10, 25, 40, and
 571         100 Gbps.</para>
 572
 573       <para revision="309560" contrib="sponsor"
 574         sponsor="&chelsio;">The &man.cxgbe.4; driver has been updated
 575         to provide support for Virtual Function devices
 576         (<acronym>VFs</acronym>) on Chelsio T6 adapters.</para>
 577
 578       <para revision="309560" contrib="sponsor"
 579         sponsor="&chelsio;">The &man.cxgbev.4; driver has been updated
 580         to provide support for Virtual Function devices
 581         (<acronym>VFs</acronym>) on Chelsio T6 adapters.</para>
 582
 583       <para revision="310852" contrib="sponsor"
 584         sponsor="&netgate;">The &man.miibus.4; driver has been updated
 585         to support Microchip/Micrel KSZ9031 Gigabit ethernet
 586         cards.</para>
 587
 588       <para revision="311506" contrib="sponsor"
 589         sponsor="&chelsio;">The &man.cxgbe.4; driver has been updated
 590         to firmware version 1.16.26.0 for T4, T5, and T6 cards.</para>
 591
 592       <para revision="312358">The &man.alc.4; driver has been updated
 593         to provide support for Atheros&reg; Killer&nbsp;E2400&trade;
 594         Gigabit ethernet cards.</para>
 595
 596       <para revision="314005" contrib="sponsor" sponsor="&ms;">The
 597         &man.alc.4; driver has been updated to provide support for
 598         Atheros&reg; Killer&nbsp;E2500&trade; Gigabit ethernet
 599         cards.</para>
 600
 601       <para revision="315330" contrib="sponsor"
 602         sponsor="&netgate;">The &man.etherswitch.4; driver has been
 603         updated to support RTL8366RB and RTL8366SR cards.</para>
 604
 605       <para revision="317116">The &man.qlnxe.4; driver has been added,
 606         providing support for Cavium&reg; Qlogic&trade; 45000 Series
 607         adapters.</para>
 608
 609       <para revision="317182">The &man.qlxgbe.4; firmware has been
 610         updated to version 5.4.64.</para>
 611
 612       <para revision="318357" contrib="sponsor"
 613         sponsor="&intelcorp;">The &man.ixl.4; driver has been updated
 614         to version 1.7.12-k.</para>
 615     </sect2>
 616   </sect1>
 617
 618   <sect1 xml:id="hardware">
 619     <title>Hardware Support</title>
 620
 621     <para>This section covers general hardware support for physical
 622       machines, hypervisors, and virtualization environments, as well
 623       as hardware changes and updates that do not otherwise fit in
 624       other sections of this document.</para>
 625
 626     <sect2 xml:id="hardware-support">
 627       <title>Hardware Support</title>
 628
 629       <para revision="307576">The &man.atkbdc.4; driver has been
 630         updated to provide support for Elantech&reg; trackpads.  To
 631         enable hardware support, add
 632         <literal>hw.psm.elantech_support=1</literal> to
 633         &man.loader.conf.5;.</para>
 634     </sect2>
 635
 636     <sect2 xml:id="hardware-virtualization">
 637       <title>Virtualization Support</title>
 638
 639       <para revision="306471" contrib="sponsor"
 640         sponsor="&chelsio;"><acronym>PCI</acronym> passthrough with
 641         &man.bhyve.4; supports more dynamic configurations permitting
 642         devices to be marked for passthrough or host use at
 643         runtime.</para>
 644
 645       <para revision="306520" contrib="sponsor"
 646         sponsor="&chelsio;"><acronym>PCI</acronym> passthrough with
 647         &man.bhyve.4; resets functions via <acronym>FLR</acronym> when
 648         a virtual machine is started and stopped.</para>
 649     </sect2>
 650
 651     <sect2 xml:id="hardware-arm">
 652       <title>ARM Support</title>
 653
 654       <para revision="305436">Support for the Allwinner A13 board has
 655         been added.</para>
 656     </sect2>
 657   </sect1>
 658
 659   <sect1 xml:id="storage">
 660     <title>Storage</title>
 661
 662     <para>This section covers changes and additions to file systems
 663       and other storage subsystems, both local and networked.</para>
 664
 665     <sect2 xml:id="storage-general">
 666       <title>General Storage</title>
 667
 668       <para>&nbsp;</para>
 669     </sect2>
 670
 671     <sect2 xml:id="storage-net">
 672       <title>Networked Storage</title>
 673
 674       <para>&nbsp;</para>
 675     </sect2>
 676
 677     <sect2 xml:id="storage-zfs">
 678       <title>ZFS</title>
 679
 680       <para>&nbsp;</para>
 681     </sect2>
 682
 683     <sect2 xml:id="storage-geom">
 684       <title><literal>geom(4)</literal></title>
 685
 686       <para>&nbsp;</para>
 687     </sect2>
 688   </sect1>
 689
 690   <sect1 xml:id="boot">
 691     <title>Boot Loader Changes</title>
 692
 693     <para>This section covers the boot loader, boot menu, and other
 694       boot-related changes.</para>
 695
 696     <sect2 xml:id="boot-loader">
 697       <title>Boot Loader Changes</title>
 698
 699       <para revision="307632" contrib="sponsor" sponsor="&gandi;">The
 700         <acronym>EFI</acronym> loader has been updated to support
 701         <acronym>TFTPFS</acronym>, providing netboot support without
 702         requiring an <acronym>NFS</acronym> server.</para>
 703     </sect2>
 704
 705     <sect2 xml:id="boot-menu">
 706       <title>Boot Menu Changes</title>
 707
 708       <para>&nbsp;</para>
 709     </sect2>
 710   </sect1>
 711
 712   <sect1 xml:id="network">
 713     <title>Networking</title>
 714
 715     <para>This section describes changes that affect networking in
 716       &os;.</para>
 717
 718     <sect2 xml:id="network-general">
 719       <title>General Network Changes</title>
 720
 721       <para revision="311681" contrib="sponsor" sponsor="&yandex;">The
 722         network stack has been updated to include
 723         <function>ip6_tryforward()</function>, providing performance
 724         benefits as result of a reduced number of checks.</para>
 725
 726       <para revision="313523" contrib="sponsor"
 727         sponsor="&dellemc;">The network stack has been modified to fix
 728         incorrect or invalid <acronym>IP</acronym> addresses if
 729         multiple threads emit a <acronym>UDP</acronym>
 730         <literal>log_in_vain</literal> message concurrently.</para>
 731
 732       <para revision="317386" contrib="sponsor"
 733         sponsor="&multiplay;">The <acronym>TCP</acronym> stack has
 734         been changed to use the estimated <acronym>RTT</acronym>
 735         instead of timestamps for receive buffer auto resizing.</para>
 736     </sect2>
 737
 738     <sect2 xml:id="network-protocols">
 739       <title>Network Protocols</title>
 740
 741       <para revision="309337" contrib="sponsor"
 742         sponsor="&dellemc;">Support for <acronym>GARP</acronym>
 743         (gratuitous <acronym>ARP</acronym>) retransmit has been added.
 744         A new &man.sysctl.8;,
 745         <literal>net.link.ether.inet.garp_rexmit_count</literal>, has
 746         been added, which sets the maximum number of retransmissions
 747         when set to a non-zero value.</para>
 748
 749       <para revision="315514" contrib="sponsor"
 750         sponsor="&yandex;">Support for the
 751         <literal>UDP_ENCAP_ESPINUDP_NON_IKE</literal> encapsulation
 752         type has been removed.</para>
 753     </sect2>
 754   </sect1>
 755
 756   <sect1 xml:id="ports">
 757     <title>Ports Collection and Package Infrastructure</title>
 758
 759     <para>This section covers changes to the &os;&nbsp;Ports
 760       Collection, package infrastructure, and package maintenance and
 761       installation tools.</para>
 762
 763     <sect2 xml:id="ports-infrastructure">
 764       <title>Infrastructure Changes</title>
 765
 766       <para>&nbsp;</para>
 767     </sect2>
 768
 769     <sect2 xml:id="ports-packages ">
 770       <title>Packaging Changes</title>
 771
 772       <para>&nbsp;</para>
 773     </sect2>
 774   </sect1>
 775
 776   <sect1 xml:id="doc">
 777     <title>Documentation</title>
 778
 779     <para>This section covers changes to the &os;&nbsp;Documentation
 780       Project sources and toolchain.</para>
 781
 782     <sect2 xml:id="doc-sources">
 783       <title>Documentation Source Changes</title>
 784
 785       <para>&nbsp;</para>
 786     </sect2>
 787
 788     <sect2 xml:id="doc-toolchain">
 789       <title>Documentation Toolchain Changes</title>
 790
 791       <para>&nbsp;</para>
 792     </sect2>
 793   </sect1>
 794
 795   <sect1 xml:id="releng">
 796     <title>Release Engineering and Integration</title>
 797
 798     <para>This section convers changes that are specific to the
 799       &os;&nbsp;Release Engineering processes.</para>
 800
 801     <sect2 xml:id="releng-changes">
 802       <title>Integration Changes</title>
 803
 804       <para>&nbsp;</para>
 805     </sect2>
 806   </sect1>
 807 </article>