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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="308915">The &man.zfsbootcfg.8; utility has been
 187         added, providing one-time &man.boot.config.5;-style options
 188         for &man.zfsboot.8;.</para>
 189     </sect2>
 190
 191     <sect2 xml:id="userland-contrib">
 192       <title>Contributed Software</title>
 193
 194       <para revision="309512"><application>Subversion</application>
 195         has been updated to version 1.9.5.</para>
 196
 197       <para revision="309848">&man.file.1; has been updated to version
 198         5.29.</para>
 199
 200       <para revision="310490">The &man.amd.8; utility has been updated
 201         to version 6.2.</para>
 202
 203       <para revision="312516">&man.xz.1; has been updated to version
 204         5.2.3.</para>
 205
 206       <para revision="313796">&man.zlib.3; has been updated to version
 207         1.2.11.</para>
 208
 209       <para revision="315433">&man.libarchive.3; has been updated to
 210         version 3.3.1.</para>
 211
 212       <para revision="316069">&man.ntpd.8; has been updated to version
 213         4.2.8p10.</para>
 214
 215       <para revision="316350">Timezone data files have been updated to
 216         version 2017b.</para>
 217
 218       <para revision="316958">&man.tcsh.1; has been updated to version
 219         6.20.00.</para>
 220     </sect2>
 221
 222     <sect2 xml:id="userland-installer">
 223       <title>Installation and Configuration Tools</title>
 224
 225       <para>&nbsp;</para>
 226     </sect2>
 227
 228     <sect2 xml:id="userland-rc">
 229       <title><filename class="directory">/etc/rc.d</filename>
 230         Scripts</title>
 231
 232       <para>&nbsp;</para>
 233     </sect2>
 234
 235     <sect2 xml:id="userland-periodic">
 236       <title><filename class="directory">/etc/periodic</filename>
 237         Scripts</title>
 238
 239       <para>&nbsp;</para>
 240     </sect2>
 241
 242     <sect2 xml:id="userland-libraries">
 243       <title>Runtime Libraries and API</title>
 244
 245       <para revision="316040">The &man.kvm.close.3; function has been
 246         updated to return the accumulated error from previous
 247         &man.close.2; calls.</para>
 248     </sect2>
 249
 250     <sect2 xml:id="userland-abi">
 251       <title>ABI Compatibility</title>
 252
 253       <para revision="309258">The type <literal>max_align_t</literal>
 254         is now defined for C11 compliance.</para>
 255     </sect2>
 256   </sect1>
 257
 258   <sect1 xml:id="kernel">
 259     <title>Kernel</title>
 260
 261     <para>This section covers changes to kernel configurations, system
 262       tuning, and system control parameters that are not otherwise
 263       categorized.</para>
 264
 265     <sect2 xml:id="kernel-bugfix">
 266       <title>Kernel Bug Fixes</title>
 267
 268       <para revision="317434">The &man.ipf.4; packet filter has been
 269         updated to prevent <literal>keep state</literal> from
 270         incorrectly implying <literal>keep frags</literal>, matching
 271         the behavior documented in &man.ipf.5;.</para>
 272     </sect2>
 273
 274     <sect2 xml:id="kernel-config">
 275       <title>Kernel Configuration</title>
 276
 277       <para>&nbsp;</para>
 278     </sect2>
 279
 280     <sect2 xml:id="kernel-sysctl">
 281       <title>System Tuning and Controls</title>
 282
 283       <para></para>
 284     </sect2>
 285   </sect1>
 286
 287   <sect1 xml:id="drivers">
 288     <title>Devices and Drivers</title>
 289
 290     <para>This section covers changes and additions to devices and
 291       device drivers since &release.prev;.</para>
 292
 293     <sect2 xml:id="drivers-device">
 294       <title>Device Drivers</title>
 295
 296       <para>&nbsp;</para>
 297     </sect2>
 298
 299     <sect2 xml:id="drivers-storage">
 300       <title>Storage Drivers</title>
 301
 302       <para revision="319436">The &man.mpr.4; driver has been updated
 303         to support tri-mode
 304         (<acronym>SAS</acronym>/<acronym>SATA</acronym>/<acronym>PCIe</acronym>)
 305         Broadcom&reg; storage adapters.</para>
 306     </sect2>
 307
 308     <sect2 xml:id="drivers-network">
 309       <title>Network Drivers</title>
 310
 311       <para revision="312359">The &man.alc.4; driver has been updated
 312         to provide support for Atheros&reg; Killer&nbsp;E2400&trade;
 313         Gigabit ethernet cards.</para>
 314
 315       <para revision="314019" contrib="sponsor" sponsor="&ms;">The
 316         &man.alc.4; driver has been updated to provide support for
 317         Atheros&reg; Killer&nbsp;E2500&trade; Gigabit ethernet
 318         cards.</para>
 319
 320       <para revision="316485">The &man.qlnxe.4; driver has been added,
 321         providing support for Cavium&reg; Qlogic&trade; 45000 Series
 322         adapters.</para>
 323
 324       <para revision="319270" contrib="sponsor"
 325         sponsor="&chelsio;">The &man.cxgbe.4; driver has been updated
 326         to firmware version 1.16.45.0 for T4, T5, and T6 cards.</para>
 327     </sect2>
 328   </sect1>
 329
 330   <sect1 xml:id="hardware">
 331     <title>Hardware Support</title>
 332
 333     <para>This section covers general hardware support for physical
 334       machines, hypervisors, and virtualization environments, as well
 335       as hardware changes and updates that do not otherwise fit in
 336       other sections of this document.</para>
 337
 338     <sect2 xml:id="hardware-support">
 339       <title>Hardware Support</title>
 340
 341       <para>&nbsp;</para>
 342     </sect2>
 343
 344     <sect2 xml:id="hardware-virtualization">
 345       <title>Virtualization Support</title>
 346
 347       <para></para>
 348     </sect2>
 349
 350     <sect2 xml:id="hardware-arm">
 351       <title>ARM Support</title>
 352
 353       <para>&nbsp;</para>
 354     </sect2>
 355   </sect1>
 356
 357   <sect1 xml:id="storage">
 358     <title>Storage</title>
 359
 360     <para>This section covers changes and additions to file systems
 361       and other storage subsystems, both local and networked.</para>
 362
 363     <sect2 xml:id="storage-general">
 364       <title>General Storage</title>
 365
 366       <para>&nbsp;</para>
 367     </sect2>
 368
 369     <sect2 xml:id="storage-net">
 370       <title>Networked Storage</title>
 371
 372       <para revision="318675">The <acronym>NFS</acronym> client now
 373         properly handles <literal>NFS4ERR_BAD_SESSION</literal> errors
 374         received from an <acronym>NFS</acronym> server.  Additionally,
 375         the kernel <acronym>RPC</acronym> client has been updated to
 376         prevent creating new <acronym>TCP</acronym> connections when
 377         <literal>ERESTART</literal> is received from
 378         &man.sosend.9;.</para>
 379     </sect2>
 380
 381     <sect2 xml:id="storage-zfs">
 382       <title>ZFS</title>
 383
 384       <para></para>
 385     </sect2>
 386
 387     <sect2 xml:id="storage-geom">
 388       <title>&man.geom.4;</title>
 389
 390       <para>&nbsp;</para>
 391     </sect2>
 392   </sect1>
 393
 394   <sect1 xml:id="boot">
 395     <title>Boot Loader Changes</title>
 396
 397     <para>This section covers the boot loader, boot menu, and other
 398       boot-related changes.</para>
 399
 400     <sect2 xml:id="boot-loader">
 401       <title>Boot Loader Changes</title>
 402
 403       <para>&nbsp;</para>
 404     </sect2>
 405
 406     <sect2 xml:id="boot-menu">
 407       <title>Boot Menu Changes</title>
 408
 409       <para>&nbsp;</para>
 410     </sect2>
 411   </sect1>
 412
 413   <sect1 xml:id="network">
 414     <title>Networking</title>
 415
 416     <para>This section describes changes that affect networking in
 417       &os;.</para>
 418
 419     <sect2 xml:id="network-general">
 420       <title>General Networking Changes</title>
 421
 422       <para revision="313558" contrib="sponsor"
 423         sponsor="&dellemc;">The network stack has been modified to fix
 424         incorrect or invalid <acronym>IP</acronym> addresses if
 425         multiple threads emit a <acronym>UDP</acronym>
 426         <literal>log_in_vain</literal> message concurrently.</para>
 427
 428       <para revision="317375" contrib="sponsor"
 429         sponsor="&multiplay;">The <acronym>TCP</acronym> stack has
 430         been changed to use the estimated <acronym>RTT</acronym>
 431         instead of timestamps for receive buffer auto resizing.</para>
 432     </sect2>
 433
 434     <sect2 xml:id="network-protocols">
 435       <title>Network Protocols</title>
 436
 437       <para revision="309340" contrib="sponsor"
 438         sponsor="&dellemc;">Support for <acronym>GARP</acronym>
 439         (gratuitous <acronym>ARP</acronym>) retransmit has been added.
 440         A new &man.sysctl.8;,
 441         <literal>net.link.ether.inet.garp_rexmit_count</literal>, has
 442         been added, which sets the maximum number of retransmissions
 443         when set to a non-zero value.</para>
 444     </sect2>
 445   </sect1>
 446
 447   <sect1 xml:id="ports">
 448     <title>Ports Collection and Package Infrastructure</title>
 449
 450     <para>This section covers changes to the &os;&nbsp;Ports
 451       Collection, package infrastructure, and package maintenance and
 452       installation tools.</para>
 453
 454     <sect2 xml:id="ports-infrastructure">
 455       <title>Infrastructure Changes</title>
 456
 457       <para>&nbsp;</para>
 458     </sect2>
 459
 460     <sect2 xml:id="ports-packages ">
 461       <title>Packaging Changes</title>
 462
 463       <para>&nbsp;</para>
 464     </sect2>
 465   </sect1>
 466
 467   <sect1 xml:id="doc">
 468     <title>Documentation</title>
 469
 470     <para>This section covers changes to the &os;&nbsp;Documentation
 471       Project sources and toolchain.</para>
 472
 473     <sect2 xml:id="doc-sources">
 474       <title>Documentation Source Changes</title>
 475
 476       <para>&nbsp;</para>
 477     </sect2>
 478
 479     <sect2 xml:id="doc-toolchain">
 480       <title>Documentation Toolchain Changes</title>
 481
 482       <para>&nbsp;</para>
 483     </sect2>
 484   </sect1>
 485
 486   <sect1 xml:id="releng">
 487     <title>Release Engineering and Integration</title>
 488
 489     <para>This section convers changes that are specific to the
 490       &os;&nbsp;Release Engineering processes.</para>
 491
 492     <sect2 xml:id="releng-changes">
 493       <title>Integration Changes</title>
 494
 495       <para>&nbsp;</para>
 496     </sect2>
 497   </sect1>
 498 </article>