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19   xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
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
182       <para revision="321263">The &man.newsyslog.8; utility has been
183         updated to support logging to &man.syslogd.8; in a format
184         compliant with RFC5424.  For more details, see the description
185         for the <literal>T</literal> flag in
186         &man.newsyslog.conf.5;.</para>
187     </sect2>
188
189     <sect2 xml:id="userland-programs">
190       <title>Userland Application Changes</title>
191
192       <para revision="298427">The &man.truss.1; utility has been
193         updated to include the <literal>-H</literal> flag, which logs
194         the thread ID of a thread invoking a system call.</para>
195
196       <para revision="308915">The &man.zfsbootcfg.8; utility has been
197         added, providing one-time &man.boot.config.5;-style options
198         for &man.zfsboot.8;.</para>
199
200       <para revision="319390">The &man.cxgbetool.8; utility has been
201         added, providing command-line access to features and debugging
202         facilities of &man.cxgbe.4; devices.</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     </sect2>
210
211     <sect2 xml:id="userland-contrib">
212       <title>Contributed Software</title>
213
214       <para revision="309512"><application>Subversion</application>
215         has been updated to version 1.9.5.</para>
216
217       <para revision="309848">&man.file.1; has been updated to version
218         5.29.</para>
219
220       <para revision="310490">The &man.amd.8; utility has been updated
221         to version 6.2.</para>
222
223       <para revision="312516">&man.xz.1; has been updated to version
224         5.2.3.</para>
225
226       <para revision="313796">&man.zlib.3; has been updated to version
227         1.2.11.</para>
228
229       <para revision="316069">&man.ntpd.8; has been updated to version
230         4.2.8p10.</para>
231
232       <para revision="316350">Timezone data files have been updated to
233         version 2017b.</para>
234
235       <para revision="316958">&man.tcsh.1; has been updated to version
236         6.20.00.</para>
237
238       <para revision="321304">&man.libarchive.3; has been updated to
239         version 3.3.2.</para>
240     </sect2>
241
242     <sect2 xml:id="userland-installer">
243       <title>Installation and Configuration Tools</title>
244
245       <para>&nbsp;</para>
246     </sect2>
247
248     <sect2 xml:id="userland-rc">
249       <title><filename class="directory">/etc/rc.d</filename>
250         Scripts</title>
251
252       <para>&nbsp;</para>
253     </sect2>
254
255     <sect2 xml:id="userland-periodic">
256       <title><filename class="directory">/etc/periodic</filename>
257         Scripts</title>
258
259       <para>&nbsp;</para>
260     </sect2>
261
262     <sect2 xml:id="userland-libraries">
263       <title>Runtime Libraries and API</title>
264
265       <para revision="316040">The &man.kvm.close.3; function has been
266         updated to return the accumulated error from previous
267         &man.close.2; calls.</para>
268     </sect2>
269
270     <sect2 xml:id="userland-abi">
271       <title>ABI Compatibility</title>
272
273       <para revision="309258">The type <literal>max_align_t</literal>
274         is now defined for C11 compliance.</para>
275     </sect2>
276
277     <sect2 xml:id="userland-debug">
278       <title>Userland Debugging</title>
279
280       <para revision="304017">&man.ptrace.2; now supports events for
281         thread creation and destruction, permitting more reliable
282         debugging of threaded processes.</para>
283
284       <para revision="304499">&man.ptrace.2; now supports events for
285         &man.vfork.2;, permitting reliable debugging across
286         &man.vfork.2; invocations.</para>
287
288       <para revision="306786">Process core dumps now include the
289         process ID (<acronym>PID</acronym>) and command line
290         arguments.</para>
291     </sect2>
292   </sect1>
293
294   <sect1 xml:id="kernel">
295     <title>Kernel</title>
296
297     <para>This section covers changes to kernel configurations, system
298       tuning, and system control parameters that are not otherwise
299       categorized.</para>
300
301     <sect2 xml:id="kernel-bugfix">
302       <title>Kernel Bug Fixes</title>
303
304       <para revision="317434">The &man.ipf.4; packet filter has been
305         updated to prevent <literal>keep state</literal> from
306         incorrectly implying <literal>keep frags</literal>, matching
307         the behavior documented in &man.ipf.5;.</para>
308     </sect2>
309
310     <sect2 xml:id="kernel-config">
311       <title>Kernel Configuration</title>
312
313       <para>&nbsp;</para>
314     </sect2>
315
316     <sect2 xml:id="kernel-sysctl">
317       <title>System Tuning and Controls</title>
318
319       <para></para>
320     </sect2>
321   </sect1>
322
323   <sect1 xml:id="drivers">
324     <title>Devices and Drivers</title>
325
326     <para>This section covers changes and additions to devices and
327       device drivers since &release.prev;.</para>
328
329     <sect2 xml:id="drivers-device">
330       <title>Device Drivers</title>
331
332       <para revision="306533" contrib="sponsor"
333         sponsor="&chelsio;">&man.devctl.8; now supports a &quot;clear
334         driver&quot; command as a complement to &quot;set
335         driver&quot;.</para>
336     </sect2>
337
338     <sect2 xml:id="drivers-storage">
339       <title>Storage Drivers</title>
340
341       <para revision="319436">The &man.mpr.4; driver has been updated
342         to support tri-mode
343         (<acronym>SAS</acronym>/<acronym>SATA</acronym>/<acronym>PCIe</acronym>)
344         Broadcom&reg; storage adapters.</para>
345     </sect2>
346
347     <sect2 xml:id="drivers-network">
348       <title>Network Drivers</title>
349
350       <para revision="309447" contrib="sponsor"
351         sponsor="&chelsio;">The &man.cxgbev.4; driver has been added,
352         providing support for Virtual Function devices
353         (<acronym>VFs</acronym>) on Chelsio T4 and T5 adapters.</para>
354
355       <para revision="309560" contrib="sponsor"
356         sponsor="&chelsio;">The &man.cxgbe.4; driver has been updated
357         to provide support for Virtual Function devices
358         (<acronym>VFs</acronym>) on Chelsio T6 adapters.</para>
359
360       <para revision="309560" contrib="sponsor"
361         sponsor="&chelsio;">The &man.cxgbe.4; driver now supports
362         devices using T6-based adapters which support 10, 25, 40, and
363         100 Gbps.</para>
364
365       <para revision="312359">The &man.alc.4; driver has been updated
366         to provide support for Atheros&reg; Killer&nbsp;E2400&trade;
367         Gigabit ethernet cards.</para>
368
369       <para revision="314019" contrib="sponsor" sponsor="&ms;">The
370         &man.alc.4; driver has been updated to provide support for
371         Atheros&reg; Killer&nbsp;E2500&trade; Gigabit ethernet
372         cards.</para>
373
374       <para revision="316485">The &man.qlnxe.4; driver has been added,
375         providing support for Cavium&reg; Qlogic&trade; 45000 Series
376         adapters.</para>
377
378       <para revision="319270" contrib="sponsor"
379         sponsor="&chelsio;">The &man.cxgbe.4; driver has been updated
380         to firmware version 1.16.45.0 for T4, T5, and T6 cards.</para>
381     </sect2>
382   </sect1>
383
384   <sect1 xml:id="hardware">
385     <title>Hardware Support</title>
386
387     <para>This section covers general hardware support for physical
388       machines, hypervisors, and virtualization environments, as well
389       as hardware changes and updates that do not otherwise fit in
390       other sections of this document.</para>
391
392     <sect2 xml:id="hardware-support">
393       <title>Hardware Support</title>
394
395       <para>&nbsp;</para>
396     </sect2>
397
398     <sect2 xml:id="hardware-virtualization">
399       <title>Virtualization Support</title>
400
401       <para revision="306520" contrib="sponsor"
402         sponsor="&chelsio;"><acronym>PCI</acronym> passthrough with
403         &man.bhyve.4; resets functions via <acronym>FLR</acronym> when
404         a virtual machine is started and stopped.</para>
405
406       <para revision="306472" contrib="sponsor"
407         sponsor="&chelsio;"><acronym>PCI</acronym> passthrough with
408         &man.bhyve.4; supports more dynamic configurations permitting
409         devices to be marked for passthrough or host use at
410         runtime.</para>
411     </sect2>
412
413     <sect2 xml:id="hardware-arm">
414       <title>ARM Support</title>
415
416       <para>&nbsp;</para>
417     </sect2>
418   </sect1>
419
420   <sect1 xml:id="storage">
421     <title>Storage</title>
422
423     <para>This section covers changes and additions to file systems
424       and other storage subsystems, both local and networked.</para>
425
426     <sect2 xml:id="storage-general">
427       <title>General Storage</title>
428
429       <para>&nbsp;</para>
430     </sect2>
431
432     <sect2 xml:id="storage-net">
433       <title>Networked Storage</title>
434
435       <para revision="318675">The <acronym>NFS</acronym> client now
436         properly handles <literal>NFS4ERR_BAD_SESSION</literal> errors
437         received from an <acronym>NFS</acronym> server.  Additionally,
438         the kernel <acronym>RPC</acronym> client has been updated to
439         prevent creating new <acronym>TCP</acronym> connections when
440         <literal>ERESTART</literal> is received from
441         &man.sosend.9;.</para>
442     </sect2>
443
444     <sect2 xml:id="storage-zfs">
445       <title>ZFS</title>
446
447       <para></para>
448     </sect2>
449
450     <sect2 xml:id="storage-geom">
451       <title>&man.geom.4;</title>
452
453       <para>&nbsp;</para>
454     </sect2>
455   </sect1>
456
457   <sect1 xml:id="boot">
458     <title>Boot Loader Changes</title>
459
460     <para>This section covers the boot loader, boot menu, and other
461       boot-related changes.</para>
462
463     <sect2 xml:id="boot-loader">
464       <title>Boot Loader Changes</title>
465
466       <para>&nbsp;</para>
467     </sect2>
468
469     <sect2 xml:id="boot-menu">
470       <title>Boot Menu Changes</title>
471
472       <para>&nbsp;</para>
473     </sect2>
474   </sect1>
475
476   <sect1 xml:id="network">
477     <title>Networking</title>
478
479     <para>This section describes changes that affect networking in
480       &os;.</para>
481
482     <sect2 xml:id="network-general">
483       <title>General Networking Changes</title>
484
485       <para revision="313558" contrib="sponsor"
486         sponsor="&dellemc;">The network stack has been modified to fix
487         incorrect or invalid <acronym>IP</acronym> addresses if
488         multiple threads emit a <acronym>UDP</acronym>
489         <literal>log_in_vain</literal> message concurrently.</para>
490
491       <para revision="317375" contrib="sponsor"
492         sponsor="&multiplay;">The <acronym>TCP</acronym> stack has
493         been changed to use the estimated <acronym>RTT</acronym>
494         instead of timestamps for receive buffer auto resizing.</para>
495     </sect2>
496
497     <sect2 xml:id="network-protocols">
498       <title>Network Protocols</title>
499
500       <para revision="309340" contrib="sponsor"
501         sponsor="&dellemc;">Support for <acronym>GARP</acronym>
502         (gratuitous <acronym>ARP</acronym>) retransmit has been added.
503         A new &man.sysctl.8;,
504         <literal>net.link.ether.inet.garp_rexmit_count</literal>, has
505         been added, which sets the maximum number of retransmissions
506         when set to a non-zero value.</para>
507     </sect2>
508   </sect1>
509
510   <sect1 xml:id="ports">
511     <title>Ports Collection and Package Infrastructure</title>
512
513     <para>This section covers changes to the &os;&nbsp;Ports
514       Collection, package infrastructure, and package maintenance and
515       installation tools.</para>
516
517     <sect2 xml:id="ports-infrastructure">
518       <title>Infrastructure Changes</title>
519
520       <para>&nbsp;</para>
521     </sect2>
522
523     <sect2 xml:id="ports-packages ">
524       <title>Packaging Changes</title>
525
526       <para>&nbsp;</para>
527     </sect2>
528   </sect1>
529
530   <sect1 xml:id="doc">
531     <title>Documentation</title>
532
533     <para>This section covers changes to the &os;&nbsp;Documentation
534       Project sources and toolchain.</para>
535
536     <sect2 xml:id="doc-sources">
537       <title>Documentation Source Changes</title>
538
539       <para>&nbsp;</para>
540     </sect2>
541
542     <sect2 xml:id="doc-toolchain">
543       <title>Documentation Toolchain Changes</title>
544
545       <para>&nbsp;</para>
546     </sect2>
547   </sect1>
548
549   <sect1 xml:id="releng">
550     <title>Release Engineering and Integration</title>
551
552     <para>This section convers changes that are specific to the
553       &os;&nbsp;Release Engineering processes.</para>
554
555     <sect2 xml:id="releng-changes">
556       <title>Integration Changes</title>
557
558       <para>&nbsp;</para>
559     </sect2>
560   </sect1>
561 </article>