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  20
  21   <info>
  22     <title>&os; &release.current; Release Notes</title>
  23
  24     <author>
  25       <orgname>The &os; Project</orgname>
  26     </author>
  27
  28     <pubdate>$FreeBSD$</pubdate>
  29
  30     <copyright>
  31       <year>2017</year>
  32       <holder role="mailto:doc@FreeBSD.org">The &os; Documentation
  33         Project</holder>
  34     </copyright>
  35
  36     <legalnotice xml:id="trademarks" role="trademarks">
  37       &tm-attrib.freebsd;
  38       &tm-attrib.ibm;
  39       &tm-attrib.ieee;
  40       &tm-attrib.intel;
  41       &tm-attrib.sparc;
  42       &tm-attrib.general;
  43     </legalnotice>
  44
  45     <abstract>
  46       <para>The release notes for &os; &release.current; contain
  47         a summary of the changes made to the &os; base system on the
  48         &release.branch; development line.  This document lists
  49         applicable security advisories that were issued since the last
  50         release, as well as significant changes to the &os; kernel and
  51         userland.  Some brief remarks on upgrading are also
  52         presented.</para>
  53     </abstract>
  54   </info>
  55
  56   <sect1 xml:id="intro">
  57     <title>Introduction</title>
  58
  59     <para>This document contains the release notes for &os;
  60       &release.current;.  It describes recently added, changed, or
  61       deleted features of &os;.  It also provides some notes on
  62       upgrading from previous versions of &os;.</para>
  63
  64     <para releasetype="current">The &release.type; distribution to
  65       which these release notes apply represents the latest point
  66       along the &release.branch; development branch since
  67       &release.branch; was created.  Information regarding pre-built,
  68       binary &release.type; distributions along this branch can be
  69       found at <uri
  70         xlink:href="&release.url;">&release.url;</uri>.</para>
  71
  72     <para releasetype="snapshot">The &release.type; distribution to
  73       which these release notes apply represents a point along the
  74       &release.branch; development branch between &release.prev; and
  75       the future &release.next;.  Information regarding pre-built,
  76       binary &release.type; distributions along this branch can be
  77       found at <uri
  78         xlink:href="&release.url;">&release.url;</uri>.</para>
  79
  80     <para releasetype="release">This distribution of &os;
  81       &release.current; is a &release.type; distribution.  It can be
  82       found at <uri xlink:href="&release.url;">&release.url;</uri> or
  83       any of its mirrors.  More information on obtaining this (or
  84       other) &release.type; distributions of &os; can be found in the
  85       <link
  86         xlink:href="&url.books.handbook;/mirrors.html"><quote>Obtaining
  87           &os;</quote> appendix</link> to the <link
  88         xlink:href="&url.books.handbook;/">&os;
  89         Handbook</link>.</para>
  90
  91     <para>All users are encouraged to consult the release errata
  92       before installing &os;.  The errata document is updated with
  93       <quote>late-breaking</quote> information discovered late in the
  94       release cycle or after the release.  Typically, it contains
  95       information on known bugs, security advisories, and corrections
  96       to documentation.  An up-to-date copy of the errata for &os;
  97       &release.current; can be found on the &os; Web site.</para>
  98
  99     <para>This document describes the most user-visible new or changed
 100       features in &os; since &release.prev;.</para>
 101
 102     <para>Typical release note items document recent security
 103       advisories issued after &release.prev;, new drivers or hardware
 104       support, new commands or options, major bug fixes, or
 105       contributed software upgrades.  They may also list changes to
 106       major ports/packages or release engineering practices.  Clearly
 107       the release notes cannot list every single change made to &os;
 108       between releases; this document focuses primarily on security
 109       advisories, user-visible changes, and major architectural
 110       improvements.</para>
 111   </sect1>
 112
 113   <sect1 xml:id="upgrade">
 114     <title>Upgrading from Previous Releases of &os;</title>
 115
 116     <para arch="amd64,i386">Binary upgrades between RELEASE versions
 117       (and snapshots of the various security branches) are supported
 118       using the &man.freebsd-update.8; utility.  The binary upgrade
 119       procedure will update unmodified userland utilities, as well as
 120       unmodified <filename>GENERIC</filename> kernel distributed as
 121       a part of an official &os; release.  The &man.freebsd-update.8;
 122       utility requires that the host being upgraded have Internet
 123       connectivity.</para>
 124
 125     <para>Source-based upgrades (those based on recompiling the &os;
 126       base system from source code) from previous versions are
 127       supported, according to the instructions in
 128       <filename>/usr/src/UPDATING</filename>.</para>
 129
 130     <important>
 131       <para>Upgrading &os; should only be attempted after
 132         backing up <emphasis>all</emphasis> data and configuration
 133         files.</para>
 134     </important>
 135   </sect1>
 136
 137   <sect1 xml:id="security-errata">
 138     <title>Security and Errata</title>
 139
 140     <para>This section lists the various Security Advisories and
 141       Errata Notices since &release.prev;.</para>
 142
 143     <sect2 xml:id="security">
 144       <title>Security Advisories</title>
 145
 146       &security;
 147     </sect2>
 148
 149     <sect2 xml:id="errata">
 150       <title>Errata Notices</title>
 151
 152       &errata;
 153     </sect2>
 154   </sect1>
 155
 156   <sect1 xml:id="userland">
 157     <title>Userland</title>
 158
 159     <para>This section covers changes and additions to userland
 160       applications, contributed software, and system utilities.</para>
 161
 162     <sect2 xml:id="userland-config">
 163       <title>Userland Configuration Changes</title>
 164
 165       <para revision="313206">The &man.inetd.8; utility is now built
 166         without <literal>libwrap</literal> support when
 167         <literal>WITHOUT_TCP_WRAPPERS</literal> is set in
 168         &man.src.conf.5;.</para>
 169
 170       <para revision="316046">The &man.libthr.3; library and related
 171         files are now evaluated and removed by the
 172         <literal>delete-old-libs</literal> target when upgrading the
 173         system if <literal>WITHOUT_LIBTHR</literal> is
 174         set in &man.src.conf.5;.</para>
 175
 176       <para revision="319243">The
 177         <literal>WITH_RPCBIND_WARMSTART_SUPPORT</literal>
 178         &man.src.conf.5; knob has been added, which when enabled
 179         allows building &man.rpcbind.8; with
 180         <literal>warmstart</literal> support.</para>
 181     </sect2>
 182
 183     <sect2 xml:id="userland-programs">
 184       <title>Userland Application Changes</title>
 185
 186       <para revision="298427">The &man.truss.1; utility has been
 187         updated to include the <literal>-H</literal> flag, which logs
 188         the thread ID of a thread invoking a system call.</para>
 189
 190       <para revision="308915">The &man.zfsbootcfg.8; utility has been
 191         added, providing one-time &man.boot.config.5;-style options
 192         for &man.zfsboot.8;.</para>
 193
 194       <para revision="319390">The &man.cxgbetool.8; utility has been
 195         added, providing command-line access to features and debugging
 196         facilities of &man.cxgbe.4; devices.</para>
 197
 198       <para revision="320646">The &man.rcp.1;, &man.rlogin.1;,
 199         &man.rsh.1;, &man.ruptime.1;, &man.rwho.1;, &man.rlogind.8;,
 200         &man.rshd.8;, and &man.rwhod.8; utilities have been marked as
 201         deprecated, and planned for removal in
 202         &os;&nbsp;12.0-RELEASE.</para>
 203
 204       <para revision="321242">The &man.cron.8; utility has been
 205         updated to add support for including files within <filename
 206           class="directory">/etc/cron.d</filename> and <filename
 207           class="directory">/usr/local/etc/cron.d</filename> by
 208         default.</para>
 209
 210       <para revision="321234">The &man.syslogd.8; utility has been
 211         updated to add the <literal>include</literal> keyword which
 212         allows specifying a directory containing configuration files
 213         to be included in addition to &man.syslog.conf.5;.  The
 214         default &man.syslog.conf.5; has been updated to include
 215         <filename class="directory">/etc/syslog.d</filename> and
 216         <filename class="directory">/usr/local/etc/syslog.d</filename>
 217         by default.</para>
 218
 219       <para revision="321263">The &man.newsyslog.8; utility has been
 220         updated to support logging to &man.syslogd.8; in a format
 221         compliant with RFC5424.  For more details, see the description
 222         for the <literal>T</literal> flag in
 223         &man.newsyslog.conf.5;.</para>
 224
 225       <para revision="321216">The &man.savecore.8; utility has been
 226         updated to use <acronym>KiB</acronym> when outputting
 227         information regarding total space, free space, etc.</para>
 228     </sect2>
 229
 230     <sect2 xml:id="userland-contrib">
 231       <title>Contributed Software</title>
 232
 233       <para revision="309512"><application>Subversion</application>
 234         has been updated to version 1.9.5.</para>
 235
 236       <para revision="309848">&man.file.1; has been updated to version
 237         5.29.</para>
 238
 239       <para revision="310490">The &man.amd.8; utility has been updated
 240         to version 6.2.</para>
 241
 242       <para revision="312516">&man.xz.1; has been updated to version
 243         5.2.3.</para>
 244
 245       <para revision="313796">&man.zlib.3; has been updated to version
 246         1.2.11.</para>
 247
 248       <para revision="316069">&man.ntpd.8; has been updated to version
 249         4.2.8p10.</para>
 250
 251       <para revision="316350">Timezone data files have been updated to
 252         version 2017b.</para>
 253
 254       <para revision="316958">&man.tcsh.1; has been updated to version
 255         6.20.00.</para>
 256
 257       <para revision="321304">&man.libarchive.3; has been updated to
 258         version 3.3.2.</para>
 259     </sect2>
 260
 261     <sect2 xml:id="userland-installer">
 262       <title>Installation and Configuration Tools</title>
 263
 264       <para revision="321202" contrib="sponsor" sponsor="&ff;">The
 265         default <acronym>EFI</acronym> partition created by
 266         &man.bsdinstall.8; has been increased from 800KB to
 267         200MB.</para>
 268     </sect2>
 269
 270     <sect2 xml:id="userland-rc">
 271       <title><filename class="directory">/etc/rc.d</filename>
 272         Scripts</title>
 273
 274       <para>&nbsp;</para>
 275     </sect2>
 276
 277     <sect2 xml:id="userland-periodic">
 278       <title><filename class="directory">/etc/periodic</filename>
 279         Scripts</title>
 280
 281       <para>&nbsp;</para>
 282     </sect2>
 283
 284     <sect2 xml:id="userland-libraries">
 285       <title>Runtime Libraries and API</title>
 286
 287       <para revision="316040">The &man.kvm.close.3; function has been
 288         updated to return the accumulated error from previous
 289         &man.close.2; calls.</para>
 290     </sect2>
 291
 292     <sect2 xml:id="userland-abi">
 293       <title>ABI Compatibility</title>
 294
 295       <para revision="309258">The type <literal>max_align_t</literal>
 296         is now defined for C11 compliance.</para>
 297     </sect2>
 298
 299     <sect2 xml:id="userland-debug">
 300       <title>Userland Debugging</title>
 301
 302       <para revision="304017">&man.ptrace.2; now supports events for
 303         thread creation and destruction, permitting more reliable
 304         debugging of threaded processes.</para>
 305
 306       <para revision="304499">&man.ptrace.2; now supports events for
 307         &man.vfork.2;, permitting reliable debugging across
 308         &man.vfork.2; invocations.</para>
 309
 310       <para revision="306786">Process core dumps now include the
 311         process ID (<acronym>PID</acronym>) and command line
 312         arguments.</para>
 313     </sect2>
 314   </sect1>
 315
 316   <sect1 xml:id="kernel">
 317     <title>Kernel</title>
 318
 319     <para>This section covers changes to kernel configurations, system
 320       tuning, and system control parameters that are not otherwise
 321       categorized.</para>
 322
 323     <sect2 xml:id="kernel-misc">
 324       <title>Miscellaneous Kernel Changes</title>
 325
 326       <para revision="321198">The &man.vt.4; driver has been updated,
 327         increasing the maximum framebuffer size.</para>
 328     </sect2>
 329
 330     <sect2 xml:id="kernel-bugfix">
 331       <title>Kernel Bug Fixes</title>
 332
 333       <para revision="317434">The &man.ipf.4; packet filter has been
 334         updated to prevent <literal>keep state</literal> from
 335         incorrectly implying <literal>keep frags</literal>, matching
 336         the behavior documented in &man.ipf.5;.</para>
 337     </sect2>
 338
 339     <sect2 xml:id="kernel-config">
 340       <title>Kernel Configuration</title>
 341
 342       <para>&nbsp;</para>
 343     </sect2>
 344
 345     <sect2 xml:id="kernel-sysctl">
 346       <title>System Tuning and Controls</title>
 347
 348       <para revision="321024">The
 349         <literal>kern.features.linux</literal> and
 350         <literal>kern.features.linux64</literal> flags have been
 351         added to the <literal>kern.features</literal> &man.sysctl.8;,
 352         which when set to <literal>1</literal>, indicate the kernel
 353         is configured with compatibility for 32-bit and/or 64-bit
 354         linux binaries, respectively.</para>
 355     </sect2>
 356   </sect1>
 357
 358   <sect1 xml:id="drivers">
 359     <title>Devices and Drivers</title>
 360
 361     <para>This section covers changes and additions to devices and
 362       device drivers since &release.prev;.</para>
 363
 364     <sect2 xml:id="drivers-device">
 365       <title>Device Drivers</title>
 366
 367       <para revision="306533" contrib="sponsor"
 368         sponsor="&chelsio;">&man.devctl.8; now supports a &quot;clear
 369         driver&quot; command as a complement to &quot;set
 370         driver&quot;.</para>
 371     </sect2>
 372
 373     <sect2 xml:id="drivers-storage">
 374       <title>Storage Drivers</title>
 375
 376       <para revision="319436">The &man.mpr.4; driver has been updated
 377         to support tri-mode
 378         (<acronym>SAS</acronym>/<acronym>SATA</acronym>/<acronym>PCIe</acronym>)
 379         Broadcom&reg; storage adapters.</para>
 380     </sect2>
 381
 382     <sect2 xml:id="drivers-network">
 383       <title>Network Drivers</title>
 384
 385       <para revision="309447" contrib="sponsor"
 386         sponsor="&chelsio;">The &man.cxgbev.4; driver has been added,
 387         providing support for Virtual Function devices
 388         (<acronym>VFs</acronym>) on Chelsio T4 and T5 adapters.</para>
 389
 390       <para revision="309560" contrib="sponsor"
 391         sponsor="&chelsio;">The &man.cxgbe.4; driver has been updated
 392         to provide support for Virtual Function devices
 393         (<acronym>VFs</acronym>) on Chelsio T6 adapters.</para>
 394
 395       <para revision="309560" contrib="sponsor"
 396         sponsor="&chelsio;">The &man.cxgbe.4; driver now supports
 397         devices using T6-based adapters which support 10, 25, 40, and
 398         100 Gbps.</para>
 399
 400       <para revision="312359">The &man.alc.4; driver has been updated
 401         to provide support for Atheros&reg; Killer&nbsp;E2400&trade;
 402         Gigabit ethernet cards.</para>
 403
 404       <para revision="314019" contrib="sponsor" sponsor="&ms;">The
 405         &man.alc.4; driver has been updated to provide support for
 406         Atheros&reg; Killer&nbsp;E2500&trade; Gigabit ethernet
 407         cards.</para>
 408
 409       <para revision="316485">The &man.qlnxe.4; driver has been added,
 410         providing support for Cavium&reg; Qlogic&trade; 45000 Series
 411         adapters.</para>
 412
 413       <para revision="319270" contrib="sponsor"
 414         sponsor="&chelsio;">The &man.cxgbe.4; driver has been updated
 415         to firmware version 1.16.45.0 for T4, T5, and T6 cards.</para>
 416     </sect2>
 417   </sect1>
 418
 419   <sect1 xml:id="hardware">
 420     <title>Hardware Support</title>
 421
 422     <para>This section covers general hardware support for physical
 423       machines, hypervisors, and virtualization environments, as well
 424       as hardware changes and updates that do not otherwise fit in
 425       other sections of this document.</para>
 426
 427     <sect2 xml:id="hardware-support">
 428       <title>Hardware Support</title>
 429
 430       <para>&nbsp;</para>
 431     </sect2>
 432
 433     <sect2 xml:id="hardware-virtualization">
 434       <title>Virtualization Support</title>
 435
 436       <para revision="306520" contrib="sponsor"
 437         sponsor="&chelsio;"><acronym>PCI</acronym> passthrough with
 438         &man.bhyve.4; resets functions via <acronym>FLR</acronym> when
 439         a virtual machine is started and stopped.</para>
 440
 441       <para revision="306472" contrib="sponsor"
 442         sponsor="&chelsio;"><acronym>PCI</acronym> passthrough with
 443         &man.bhyve.4; supports more dynamic configurations permitting
 444         devices to be marked for passthrough or host use at
 445         runtime.</para>
 446     </sect2>
 447
 448     <sect2 xml:id="hardware-arm">
 449       <title>ARM Support</title>
 450
 451       <para>&nbsp;</para>
 452     </sect2>
 453   </sect1>
 454
 455   <sect1 xml:id="storage">
 456     <title>Storage</title>
 457
 458     <para>This section covers changes and additions to file systems
 459       and other storage subsystems, both local and networked.</para>
 460
 461     <sect2 xml:id="storage-general">
 462       <title>General Storage</title>
 463
 464       <para>&nbsp;</para>
 465     </sect2>
 466
 467     <sect2 xml:id="storage-net">
 468       <title>Networked Storage</title>
 469
 470       <para revision="318675">The <acronym>NFS</acronym> client now
 471         properly handles <literal>NFS4ERR_BAD_SESSION</literal> errors
 472         received from an <acronym>NFS</acronym> server.  Additionally,
 473         the kernel <acronym>RPC</acronym> client has been updated to
 474         prevent creating new <acronym>TCP</acronym> connections when
 475         <literal>ERESTART</literal> is received from
 476         &man.sosend.9;.</para>
 477
 478       <para revision="321031">The <acronym>NFS</acronym> client has
 479         been updated to support <acronym>pNFS</acronym>
 480         <literal>commit</literal> through the
 481         <literal>DS</literal>.</para>
 482     </sect2>
 483
 484     <sect2 xml:id="storage-zfs">
 485       <title>ZFS</title>
 486
 487       <para></para>
 488     </sect2>
 489
 490     <sect2 xml:id="storage-geom">
 491       <title>&man.geom.4;</title>
 492
 493       <para>&nbsp;</para>
 494     </sect2>
 495   </sect1>
 496
 497   <sect1 xml:id="boot">
 498     <title>Boot Loader Changes</title>
 499
 500     <para>This section covers the boot loader, boot menu, and other
 501       boot-related changes.</para>
 502
 503     <sect2 xml:id="boot-loader">
 504       <title>Boot Loader Changes</title>
 505
 506       <para>&nbsp;</para>
 507     </sect2>
 508
 509     <sect2 xml:id="boot-menu">
 510       <title>Boot Menu Changes</title>
 511
 512       <para>&nbsp;</para>
 513     </sect2>
 514   </sect1>
 515
 516   <sect1 xml:id="network">
 517     <title>Networking</title>
 518
 519     <para>This section describes changes that affect networking in
 520       &os;.</para>
 521
 522     <sect2 xml:id="network-general">
 523       <title>General Networking Changes</title>
 524
 525       <para revision="313558" contrib="sponsor"
 526         sponsor="&dellemc;">The network stack has been modified to fix
 527         incorrect or invalid <acronym>IP</acronym> addresses if
 528         multiple threads emit a <acronym>UDP</acronym>
 529         <literal>log_in_vain</literal> message concurrently.</para>
 530
 531       <para revision="317375" contrib="sponsor"
 532         sponsor="&multiplay;">The <acronym>TCP</acronym> stack has
 533         been changed to use the estimated <acronym>RTT</acronym>
 534         instead of timestamps for receive buffer auto resizing.</para>
 535     </sect2>
 536
 537     <sect2 xml:id="network-protocols">
 538       <title>Network Protocols</title>
 539
 540       <para revision="309340" contrib="sponsor"
 541         sponsor="&dellemc;">Support for <acronym>GARP</acronym>
 542         (gratuitous <acronym>ARP</acronym>) retransmit has been added.
 543         A new &man.sysctl.8;,
 544         <literal>net.link.ether.inet.garp_rexmit_count</literal>, has
 545         been added, which sets the maximum number of retransmissions
 546         when set to a non-zero value.</para>
 547     </sect2>
 548   </sect1>
 549
 550   <sect1 xml:id="ports">
 551     <title>Ports Collection and Package Infrastructure</title>
 552
 553     <para>This section covers changes to the &os;&nbsp;Ports
 554       Collection, package infrastructure, and package maintenance and
 555       installation tools.</para>
 556
 557     <sect2 xml:id="ports-infrastructure">
 558       <title>Infrastructure Changes</title>
 559
 560       <para>&nbsp;</para>
 561     </sect2>
 562
 563     <sect2 xml:id="ports-packages ">
 564       <title>Packaging Changes</title>
 565
 566       <para>&nbsp;</para>
 567     </sect2>
 568   </sect1>
 569
 570   <sect1 xml:id="doc">
 571     <title>Documentation</title>
 572
 573     <para>This section covers changes to the &os;&nbsp;Documentation
 574       Project sources and toolchain.</para>
 575
 576     <sect2 xml:id="doc-sources">
 577       <title>Documentation Source Changes</title>
 578
 579       <para>&nbsp;</para>
 580     </sect2>
 581
 582     <sect2 xml:id="doc-toolchain">
 583       <title>Documentation Toolchain Changes</title>
 584
 585       <para>&nbsp;</para>
 586     </sect2>
 587   </sect1>
 588
 589   <sect1 xml:id="releng">
 590     <title>Release Engineering and Integration</title>
 591
 592     <para>This section convers changes that are specific to the
 593       &os;&nbsp;Release Engineering processes.</para>
 594
 595     <sect2 xml:id="releng-changes">
 596       <title>Integration Changes</title>
 597
 598       <para>&nbsp;</para>
 599     </sect2>
 600   </sect1>
 601 </article>