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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     </sect2>
 198
 199     <sect2 xml:id="userland-contrib">
 200       <title>Contributed Software</title>
 201
 202       <para revision="309512"><application>Subversion</application>
 203         has been updated to version 1.9.5.</para>
 204
 205       <para revision="309848">&man.file.1; has been updated to version
 206         5.29.</para>
 207
 208       <para revision="310490">The &man.amd.8; utility has been updated
 209         to version 6.2.</para>
 210
 211       <para revision="312516">&man.xz.1; has been updated to version
 212         5.2.3.</para>
 213
 214       <para revision="313796">&man.zlib.3; has been updated to version
 215         1.2.11.</para>
 216
 217       <para revision="315433">&man.libarchive.3; has been updated to
 218         version 3.3.1.</para>
 219
 220       <para revision="316069">&man.ntpd.8; has been updated to version
 221         4.2.8p10.</para>
 222
 223       <para revision="316350">Timezone data files have been updated to
 224         version 2017b.</para>
 225
 226       <para revision="316958">&man.tcsh.1; has been updated to version
 227         6.20.00.</para>
 228     </sect2>
 229
 230     <sect2 xml:id="userland-installer">
 231       <title>Installation and Configuration Tools</title>
 232
 233       <para>&nbsp;</para>
 234     </sect2>
 235
 236     <sect2 xml:id="userland-rc">
 237       <title><filename class="directory">/etc/rc.d</filename>
 238         Scripts</title>
 239
 240       <para>&nbsp;</para>
 241     </sect2>
 242
 243     <sect2 xml:id="userland-periodic">
 244       <title><filename class="directory">/etc/periodic</filename>
 245         Scripts</title>
 246
 247       <para>&nbsp;</para>
 248     </sect2>
 249
 250     <sect2 xml:id="userland-libraries">
 251       <title>Runtime Libraries and API</title>
 252
 253       <para revision="316040">The &man.kvm.close.3; function has been
 254         updated to return the accumulated error from previous
 255         &man.close.2; calls.</para>
 256     </sect2>
 257
 258     <sect2 xml:id="userland-abi">
 259       <title>ABI Compatibility</title>
 260
 261       <para revision="309258">The type <literal>max_align_t</literal>
 262         is now defined for C11 compliance.</para>
 263     </sect2>
 264
 265     <sect2 xml:id="userland-debug">
 266       <title>Userland Debugging</title>
 267
 268       <para revision="304017">&man.ptrace.2; now supports events for
 269         thread creation and destruction, permitting more reliable
 270         debugging of threaded processes.</para>
 271
 272       <para revision="304499">&man.ptrace.2; now supports events for
 273         &man.vfork.2;, permitting reliable debugging across
 274         &man.vfork.2; invocations.</para>
 275
 276       <para revision="306786">Process core dumps now include the
 277         process ID (<acronym>PID</acronym>) and command line
 278         arguments.</para>
 279     </sect2>
 280   </sect1>
 281
 282   <sect1 xml:id="kernel">
 283     <title>Kernel</title>
 284
 285     <para>This section covers changes to kernel configurations, system
 286       tuning, and system control parameters that are not otherwise
 287       categorized.</para>
 288
 289     <sect2 xml:id="kernel-bugfix">
 290       <title>Kernel Bug Fixes</title>
 291
 292       <para revision="317434">The &man.ipf.4; packet filter has been
 293         updated to prevent <literal>keep state</literal> from
 294         incorrectly implying <literal>keep frags</literal>, matching
 295         the behavior documented in &man.ipf.5;.</para>
 296     </sect2>
 297
 298     <sect2 xml:id="kernel-config">
 299       <title>Kernel Configuration</title>
 300
 301       <para>&nbsp;</para>
 302     </sect2>
 303
 304     <sect2 xml:id="kernel-sysctl">
 305       <title>System Tuning and Controls</title>
 306
 307       <para></para>
 308     </sect2>
 309   </sect1>
 310
 311   <sect1 xml:id="drivers">
 312     <title>Devices and Drivers</title>
 313
 314     <para>This section covers changes and additions to devices and
 315       device drivers since &release.prev;.</para>
 316
 317     <sect2 xml:id="drivers-device">
 318       <title>Device Drivers</title>
 319
 320       <para revision="306533" contrib="sponsor"
 321         sponsor="&chelsio;">&man.devctl.8; now supports a &quot;clear
 322         driver&quot; command as a complement to &quot;set
 323         driver&quot;.</para>
 324     </sect2>
 325
 326     <sect2 xml:id="drivers-storage">
 327       <title>Storage Drivers</title>
 328
 329       <para revision="319436">The &man.mpr.4; driver has been updated
 330         to support tri-mode
 331         (<acronym>SAS</acronym>/<acronym>SATA</acronym>/<acronym>PCIe</acronym>)
 332         Broadcom&reg; storage adapters.</para>
 333     </sect2>
 334
 335     <sect2 xml:id="drivers-network">
 336       <title>Network Drivers</title>
 337
 338       <para revision="309447" contrib="sponsor"
 339         sponsor="&chelsio;">The &man.cxgbev.4; driver has been added,
 340         providing support for Virtual Function devices
 341         (<acronym>VFs</acronym>) on Chelsio T4 and T5 adapters.</para>
 342
 343       <para revision="309560" contrib="sponsor"
 344         sponsor="&chelsio;">The &man.cxgbe.4; driver has been updated
 345         to provide support for Virtual Function devices
 346         (<acronym>VFs</acronym>) on Chelsio T6 adapters.</para>
 347
 348       <para revision="309560" contrib="sponsor"
 349         sponsor="&chelsio;">The &man.cxgbe.4; driver now supports
 350         devices using T6-based adapters which support 10, 25, 40, and
 351         100 Gbps.</para>
 352
 353       <para revision="312359">The &man.alc.4; driver has been updated
 354         to provide support for Atheros&reg; Killer&nbsp;E2400&trade;
 355         Gigabit ethernet cards.</para>
 356
 357       <para revision="314019" contrib="sponsor" sponsor="&ms;">The
 358         &man.alc.4; driver has been updated to provide support for
 359         Atheros&reg; Killer&nbsp;E2500&trade; Gigabit ethernet
 360         cards.</para>
 361
 362       <para revision="316485">The &man.qlnxe.4; driver has been added,
 363         providing support for Cavium&reg; Qlogic&trade; 45000 Series
 364         adapters.</para>
 365
 366       <para revision="319270" contrib="sponsor"
 367         sponsor="&chelsio;">The &man.cxgbe.4; driver has been updated
 368         to firmware version 1.16.45.0 for T4, T5, and T6 cards.</para>
 369     </sect2>
 370   </sect1>
 371
 372   <sect1 xml:id="hardware">
 373     <title>Hardware Support</title>
 374
 375     <para>This section covers general hardware support for physical
 376       machines, hypervisors, and virtualization environments, as well
 377       as hardware changes and updates that do not otherwise fit in
 378       other sections of this document.</para>
 379
 380     <sect2 xml:id="hardware-support">
 381       <title>Hardware Support</title>
 382
 383       <para>&nbsp;</para>
 384     </sect2>
 385
 386     <sect2 xml:id="hardware-virtualization">
 387       <title>Virtualization Support</title>
 388
 389       <para revision="306520" contrib="sponsor"
 390         sponsor="&chelsio;"><acronym>PCI</acronym> passthrough with
 391         &man.bhyve.4; resets functions via <acronym>FLR</acronym> when
 392         a virtual machine is started and stopped.</para>
 393
 394       <para revision="306472" contrib="sponsor"
 395         sponsor="&chelsio;"><acronym>PCI</acronym> passthrough with
 396         &man.bhyve.4; supports more dynamic configurations permitting
 397         devices to be marked for passthrough or host use at
 398         runtime.</para>
 399     </sect2>
 400
 401     <sect2 xml:id="hardware-arm">
 402       <title>ARM Support</title>
 403
 404       <para>&nbsp;</para>
 405     </sect2>
 406   </sect1>
 407
 408   <sect1 xml:id="storage">
 409     <title>Storage</title>
 410
 411     <para>This section covers changes and additions to file systems
 412       and other storage subsystems, both local and networked.</para>
 413
 414     <sect2 xml:id="storage-general">
 415       <title>General Storage</title>
 416
 417       <para>&nbsp;</para>
 418     </sect2>
 419
 420     <sect2 xml:id="storage-net">
 421       <title>Networked Storage</title>
 422
 423       <para revision="318675">The <acronym>NFS</acronym> client now
 424         properly handles <literal>NFS4ERR_BAD_SESSION</literal> errors
 425         received from an <acronym>NFS</acronym> server.  Additionally,
 426         the kernel <acronym>RPC</acronym> client has been updated to
 427         prevent creating new <acronym>TCP</acronym> connections when
 428         <literal>ERESTART</literal> is received from
 429         &man.sosend.9;.</para>
 430     </sect2>
 431
 432     <sect2 xml:id="storage-zfs">
 433       <title>ZFS</title>
 434
 435       <para></para>
 436     </sect2>
 437
 438     <sect2 xml:id="storage-geom">
 439       <title>&man.geom.4;</title>
 440
 441       <para>&nbsp;</para>
 442     </sect2>
 443   </sect1>
 444
 445   <sect1 xml:id="boot">
 446     <title>Boot Loader Changes</title>
 447
 448     <para>This section covers the boot loader, boot menu, and other
 449       boot-related changes.</para>
 450
 451     <sect2 xml:id="boot-loader">
 452       <title>Boot Loader Changes</title>
 453
 454       <para>&nbsp;</para>
 455     </sect2>
 456
 457     <sect2 xml:id="boot-menu">
 458       <title>Boot Menu Changes</title>
 459
 460       <para>&nbsp;</para>
 461     </sect2>
 462   </sect1>
 463
 464   <sect1 xml:id="network">
 465     <title>Networking</title>
 466
 467     <para>This section describes changes that affect networking in
 468       &os;.</para>
 469
 470     <sect2 xml:id="network-general">
 471       <title>General Networking Changes</title>
 472
 473       <para revision="313558" contrib="sponsor"
 474         sponsor="&dellemc;">The network stack has been modified to fix
 475         incorrect or invalid <acronym>IP</acronym> addresses if
 476         multiple threads emit a <acronym>UDP</acronym>
 477         <literal>log_in_vain</literal> message concurrently.</para>
 478
 479       <para revision="317375" contrib="sponsor"
 480         sponsor="&multiplay;">The <acronym>TCP</acronym> stack has
 481         been changed to use the estimated <acronym>RTT</acronym>
 482         instead of timestamps for receive buffer auto resizing.</para>
 483     </sect2>
 484
 485     <sect2 xml:id="network-protocols">
 486       <title>Network Protocols</title>
 487
 488       <para revision="309340" contrib="sponsor"
 489         sponsor="&dellemc;">Support for <acronym>GARP</acronym>
 490         (gratuitous <acronym>ARP</acronym>) retransmit has been added.
 491         A new &man.sysctl.8;,
 492         <literal>net.link.ether.inet.garp_rexmit_count</literal>, has
 493         been added, which sets the maximum number of retransmissions
 494         when set to a non-zero value.</para>
 495     </sect2>
 496   </sect1>
 497
 498   <sect1 xml:id="ports">
 499     <title>Ports Collection and Package Infrastructure</title>
 500
 501     <para>This section covers changes to the &os;&nbsp;Ports
 502       Collection, package infrastructure, and package maintenance and
 503       installation tools.</para>
 504
 505     <sect2 xml:id="ports-infrastructure">
 506       <title>Infrastructure Changes</title>
 507
 508       <para>&nbsp;</para>
 509     </sect2>
 510
 511     <sect2 xml:id="ports-packages ">
 512       <title>Packaging Changes</title>
 513
 514       <para>&nbsp;</para>
 515     </sect2>
 516   </sect1>
 517
 518   <sect1 xml:id="doc">
 519     <title>Documentation</title>
 520
 521     <para>This section covers changes to the &os;&nbsp;Documentation
 522       Project sources and toolchain.</para>
 523
 524     <sect2 xml:id="doc-sources">
 525       <title>Documentation Source Changes</title>
 526
 527       <para>&nbsp;</para>
 528     </sect2>
 529
 530     <sect2 xml:id="doc-toolchain">
 531       <title>Documentation Toolchain Changes</title>
 532
 533       <para>&nbsp;</para>
 534     </sect2>
 535   </sect1>
 536
 537   <sect1 xml:id="releng">
 538     <title>Release Engineering and Integration</title>
 539
 540     <para>This section convers changes that are specific to the
 541       &os;&nbsp;Release Engineering processes.</para>
 542
 543     <sect2 xml:id="releng-changes">
 544       <title>Integration Changes</title>
 545
 546       <para>&nbsp;</para>
 547     </sect2>
 548   </sect1>
 549 </article>