Commit Graph

204810 Commits

Author SHA1 Message Date
Xin LI
a2668e8128 Use chroot(2) instead of using prefixes for files.
Previously, the code prefixes the chroot path to actual file paths to
simulate the effect.  This, however, will not work for tzset(3) which
expects the current system have a working set of timezone data files,
and that is not always the case.

This changeset simplifies the handling of paths and use an actual
chroot(2) call to implement the effect.

PR:		bin/197313
MFC after:	2 weeks
2015-10-13 22:55:17 +00:00
Conrad Meyer
2c6fb1de80 NTB: MFV f9a2cf89: Comment Fix
Add "data" ntb_register_db_callback parameter description comment and
correct poor speling.

Authored by:	Jon Mason
Obtained from:	Linux (Dual BSD/GPL driver)
Sponsored by:	EMC / Isilon Storage Division
2015-10-13 20:55:21 +00:00
Conrad Meyer
2501258bd9 NTB: MFV b1ef0043: Remove References of non-B2B BWD HW
NTB-RP is not a supported configuration on BWD hardware.  Remove the
code attempting to set it up.

Authored by:	Jon Mason
Obtained from:	Linux (dual BSD/GPL driver)
Sponsored by:	EMC / Isilon Storage Division
2015-10-13 20:54:38 +00:00
Rui Paulo
8ed645520e Fix two memory leaks in config(8).
PR:		202145
Submitted by:	Kurt Lidl <lidl pix.net>
2015-10-13 20:25:03 +00:00
Conrad Meyer
e26b6f00f9 if_ntb: Fix build on i386
Sponsored by:	EMC / Isilon Storage Division
2015-10-13 19:46:54 +00:00
Conrad Meyer
f3e30f9721 ioat: Use correct macro, fix build on i386
Sponsored by:	EMC / Isilon Storage Division
2015-10-13 19:46:12 +00:00
Conrad Meyer
04494661d5 NTB: (partial) MFV ed6c24ed: NTB-RP support
This commit does not actually add NTB-RP support.  Mostly it serves to
shuffle code around to match the Linux driver.  Original Linux commit
log follows:

Add support for Non-Transparent Bridge connected to a PCI-E Root Port on
the remote system (also known as NTB-RP mode).  This allows for a NTB
enabled system to be connected to a non-NTB enabled system/slot.

Modifications to the registers and BARs/MWs on the Secondary side by the
remote system are reflected into registers on the Primary side for the
local system.  Similarly, modifications of registers and BARs/MWs on
Primary side by the local system are reflected into registers on the
Secondary side for the Remote System.  This allows communication between
the 2 sides via these registers and BARs/MWs.

Note: there is not a fix for the Xeon Errata (that was already worked
around in NTB-B2B mode) for NTB-RP mode.  Due to this limitation, NTB-RP
will not work on the Secondary side with the Xeon Errata workaround
enabled.  To get around this, disable the workaround via the
xeon_errata_workaround=0 modparm.  However, this can cause the hang
described in the errata.

Authored by:	Jon Mason
Obtained from:	Linux
Sponsored by:	EMC / Isilon Storage Division
2015-10-13 19:45:29 +00:00
Conrad Meyer
1d9352af47 NTB: MFV 49793889: Rename Variables for NTB-RP
Many variable names in the NTB driver refer to the primary or secondary
side.  However, these variables will be used to access the reverse case
when in NTB-RP mode.  Make these names more generic in anticipation of
NTB-RP support.

Authored by:	Jon Mason
Obtained from:	Linux
Sponsored by:	EMC / Isilon Storage Division
2015-10-13 19:44:25 +00:00
Bryan Drewery
0b2580be07 bsd.subdir.mk: Move all of the targets into ALL_SUBDIR_TARGETS.
Also improve documentation.

The SUBDIR_TARGETS variable should really be named LOCAL_SUBDIR_TARGETS, but
renaming it may be a surprise for downstream vendors who use this variable.

MFC after:	2 weeks
Sponsored by:	EMC / Isilon Storage Division
2015-10-13 19:42:57 +00:00
Bryan Drewery
85564c69ca bsd.subdir.mk: Handle cleanobj.
Before this, the target was unknown.  Now it will recurse on subdirs and run
the target in the current directory.  It is required to recurse as there
may be subdirs that have objs in their directory or in the object directory,
so it is not enough to just delete the objdir of the subdir parent.

MFC after:	2 weeks
Sponsored by:	EMC / Isilon Storage Division
2015-10-13 19:11:22 +00:00
Bryan Drewery
a273d4a08c Partially revert r288266: Remove SUBDIR_PARALLEL from kerberos5/lib.
I intended to remove this before committing r288266.  It works but is clearly
wrong and working by accident due to the dependencies listed in the root
Makefile.inc1 file.
2015-10-13 18:52:56 +00:00
Michael Tuexen
9372530827 Fix the timeout for INIT retransmissions in the case where RTO_MIN is
smaller than RTO_INITIAL.

MFC after:	1 week
2015-10-13 18:27:55 +00:00
Bryan Drewery
8c444cbc45 Simplify syscall generation and ABI source file handling for the build.
This is to make the Makefile more easily extendable for new ABIs.

This also makes several other subtle changes:
  -  The build now is given a list of ABIs to use based on the MACHINE_ARCH or
     MACHINE_CPUARCH.  These ABIs have a related path in sys/ that is used
     to generate their syscalls.  For each ABI to build check for a
     ABI.c, MACHINE_ARCH-ABI.c, or a MACHINE_CPUARCH-ABI.c.  This matches
     the old behavior needed for archs such as powerpc* and mips*.
  -  The ABI source file selection allows for simpler assignment of common
     ABIs such as "fbsd32" from sys/compat/freebsd32, or cloudabi64.
  - Expand 'fbsd' to 'freebsd' everywhere for consistency.
  -  Split out the powerpc-fbsd.c file into a powerpc64-freebsd32.c to be more
     like the amd64-freebsd32.c file and to more easily allow the auto-generation
     of ABI handling to work.
  -  Rename 'syscalls.h' to 'fbsd_syscalls.h' to lessen the ambiguity and
     avoid confusion with syscall.h (such as in r288997).
  -  For non-native syscall header files, they are now renamed to be
     ABI_syscalls.h, where ABI is what ABI the Makefile is building.
  -  Remove all of the makesyscalls config files.  The "native" one being
     name i386.conf was a long outstanding bug.  They were all the same
     except for the data they generated, so now it is just auto-generated
     as a build artifact.
  -  The syscalls array is now fixed to be static in the syscalls header to
     remove the compiler warning about non-extern.  This was worked around
     in the aarch64-fbsd.c file but not the others.
  -  All syscall table names are now just 'syscallnames' since they don't
     need to be different as they are all static in their own ABI files.  The
     alternative is to name them ABI_syscallnames which does not seem
     necessary.

Reviewed by:	ed, jhb
MFC after:	3 weeks
Differential Revision:	https://reviews.freebsd.org/D3851
2015-10-13 18:23:51 +00:00
Sean Bruno
b0c041f887 Add support for sysctl knobs to live tune the per interrupt rx/tx packet
processing limits in ixgbe(4)

Differential Revision:	https://reviews.freebsd.org/D3719
Submitted by:	jason wolfe (j-nitrology.com)
MFC after:	2 weeks
2015-10-13 17:34:18 +00:00
Conrad Meyer
150be74358 NTB: Enable 32-bit support
Sponsored by:	EMC / Isilon Storage Division
2015-10-13 17:22:23 +00:00
Conrad Meyer
08f35652eb NTB: Update pci ids
Add JSF, HSX, BDX ids; add two additional Xeon errata flags while we're
here.

Obtained from:	Linux
Sponsored by:	EMC / Isilon Storage Division
2015-10-13 17:21:38 +00:00
Conrad Meyer
5fa87f166d NTB: MFV 113bf1c9: BWD Link Recovery
The BWD NTB device will drop the link if an error is encountered on the
point-to-point PCI bridge.  The link will stay down until all errors are
cleared and the link is re-established.  On link down, check to see if
the error is detected, if so do the necessary housekeeping to try and
recover from the error and reestablish the link.

There is a potential race between the 2 NTB devices recovering at the
same time.  If the times are synchronized, the link will not recover and
the driver will be stuck in this loop forever.  Add a random interval to
the recovery time to prevent this race.

Authored by:	Jon Mason
Obtained from:	Linux
Sponsored by:	EMC / Isilon Storage Division
2015-10-13 17:20:47 +00:00
Sean Bruno
2b70dea602 ixl(4): Remove compile warning for unused function.
sys/dev/ixl/if_ixl.c:4377:1: warning: unused function 'ixl_debug_info' [-Wunused-function]
ixl_debug_info(SYSCTL_HANDLER_ARGS)

Differential Revision:	https://reviews.freebsd.org/D3718
Submitted by:	bz
2015-10-13 17:20:05 +00:00
Enji Cooper
0b0d825ad8 Replace references to /dev/acd0 with /dev/cd0
atapicd(4) was replaced by cd(4) with the atacam work done by
mav@ and then removed in r249083

X-MFC to: stable/10
MFC after: 2 weeks
2015-10-13 17:14:27 +00:00
Sean Bruno
24484ca4bf makefs(8) leaves sblock.fs_providersize uninitialized (zero) that can be easily
checked with dumpfs(8). This may lead to other problems, f.e. geom_label kernel
module sanity checks do not like zero fs_old_size value and skips such UFS1
file system while tasting (fs_old_size derives from sblock.fs_providersize).

PR:	203704
Submitted by:	eugen@grosbein.net
Reviewed by:	marcel
2015-10-13 17:00:14 +00:00
Dimitry Andric
4409569894 Add llvm patch corresponding to r289221. 2015-10-13 16:25:02 +00:00
Dimitry Andric
645bd50341 Pull in r250085 from upstream llvm trunk (by Andrea Di Biagio):
[x86] Fix wrong lowering of vsetcc nodes (PR25080).

  Function LowerVSETCC (in X86ISelLowering.cpp) worked under the wrong
  assumption that for non-AVX512 targets, the source type and destination type
  of a type-legalized setcc node were always the same type.

  This assumption was unfortunately incorrect; the type legalizer is not always
  able to promote the return type of a setcc to the same type as the first
  operand of a setcc.

  In the case of a vsetcc node, the legalizer firstly checks if the first input
  operand has a legal type. If so, then it promotes the return type of the vsetcc
  to that same type. Otherwise, the return type is promoted to the 'next legal
  type', which, for vectors of MVT::i1 is always a 128-bit integer vector type.

  Example (-mattr=+avx):

    %0 = trunc <8 x i32> %a to <8 x i23>
    %1 = icmp eq <8 x i23> %0, zeroinitializer

  The initial selection dag for the code above is:

  v8i1 = setcc t5, t7, seteq:ch
    t5: v8i23 = truncate t2
      t2: v8i32,ch = CopyFromReg t0, Register:v8i32 %vreg1
      t7: v8i32 = build_vector of all zeroes.

  The type legalizer would firstly check if 't5' has a legal type. If so, then it
  would reuse that same type to promote the return type of the setcc node.
  Unfortunately 't5' is of illegal type v8i23, and therefore it cannot be used to
  promote the return type of the setcc node. Consequently, the setcc return type
  is promoted to v8i16. Later on, 't5' is promoted to v8i32 thus leading to the
  following dag node:
    v8i16 = setcc t32, t25, seteq:ch

    where t32 and t25 are now values of type v8i32.

  Before this patch, function LowerVSETCC would have wrongly expanded the setcc
  to a single X86ISD::PCMPEQ. Surprisingly, ISel was still able to match an
  instruction. In our case, ISel would have matched a VPCMPEQWrr:
    t37: v8i16 = X86ISD::VPCMPEQWrr t36, t25

  However, t36 and t25 are both VR256, while the result type is instead of class
  VR128. This inconsistency ended up causing the insertion of COPY instructions
  like this:
    %vreg7<def> = COPY %vreg3; VR128:%vreg7 VR256:%vreg3

  Which is an invalid full copy (not a sub register copy).
  Eventually, the backend would have hit an UNREACHABLE "Cannot emit physreg copy
  instruction" in the attempt to expand the malformed pseudo COPY instructions.

  This patch fixes the problem adding the missing logic in LowerVSETCC to handle
  the corner case of a setcc with 128-bit return type and 256-bit operand type.

  This problem was originally reported by Dimitry as PR25080. It has been latent
  for a very long time. I have added the minimal reproducible from that bugzilla
  as test setcc-lowering.ll.

  Differential Revision: http://reviews.llvm.org/D13660

This should fix the "Cannot emit physreg copy instruction" errors when
compiling contrib/wpa/src/common/ieee802_11_common.c, and CPUTYPE is set
to a CPU supporting AVX (e.g. sandybridge, ivybridge).
2015-10-13 16:24:22 +00:00
Ed Maste
a8f2a2b926 Rewrap UPDATING entry from r265422 to 80 columns 2015-10-13 12:51:44 +00:00
Alexander Motin
e596ff7a1f Export bunch of state variables as sysctls. 2015-10-13 11:02:56 +00:00
Conrad Meyer
fd95aefd77 NTB: Style(9) cleanups 2015-10-13 03:12:55 +00:00
Conrad Meyer
59cf83b813 NTB: MFV 948d3a65: Xeon Errata Workaround
There is a Xeon hardware errata related to writes to SDOORBELL or B2BDOORBELL
in conjunction with inbound access to NTB MMIO Space, which may hang the
system.  To workaround this issue, use one of the memory windows to access the
interrupt and scratch pad registers on the remote system.  This bypasses the
issue, but removes one of the memory windows from use by the transport.  This
reduction of MWs necessitates adding some logic to determine the number of
available MWs.

Since some NTB usage methodologies may have unidirectional traffic, the ability
to disable the workaround via modparm has been added.

See BF113 in
http://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/xeon-c5500-c3500-spec-update.pdf
See BT119 in
http://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/xeon-e5-family-spec-update.pdf

Authored by:	Jon Mason
Obtained from:	Linux
Sponsored by:	EMC / Isilon Storage Division
2015-10-13 03:12:11 +00:00
Conrad Meyer
902362c988 NTB: Add hw.ntb sysctl node 2015-10-13 03:11:21 +00:00
Conrad Meyer
f74e1ad354 NTB: MFV b6750cfe: Correct USD/DSD Identification
Due to ambiguous documentation, the USD/DSD identification is backward
when compared to the setting in BIOS.  Correct the bits to match the
BIOS setting.

Authored by:	Jon Mason
Obtained from:	Linux
Sponsored by:	EMC / Isilon Storage Division
2015-10-13 03:10:36 +00:00
Conrad Meyer
7a97964b79 NTB: MFV 87034511: Correct Number of Scratch Pad Registers
The NTB Xeon hardware has 16 scratch pad registers and 16 back-to-back
scratch pad registers.  Correct the #define to represent this and update
the variable names to reflect their usage.

Authored by:	Jon Mason
Obtained from:	Linux
Sponsored by:	EMC / Isilon Storage Division
2015-10-13 03:10:04 +00:00
Adrian Chadd
4052b8bc34 casperd: bump default socket queue length to SOMAXCONN; make length configurable.
The current default listen queue for casperd is too small (8) and
hard-coded.

This patch increases the default to SOMAXCONN, and introduces a command
line flag that can used to further increase or decrease the queue length.

PR:		bin/202147
Submitted by:	<lidl@pix.net>
2015-10-13 02:34:41 +00:00
Adrian Chadd
a08b904c5e makefs: introduce a new option to specify what to round the resulting
image up to.

From ticket:

While trying to run FreeBSD/mips on some device having very small flash media,
one is forced to compress file system with mkulzma(8) utility. It is desirable
to specify small UFS block/fragment sizes like 4096/512 bytes for makefs(8)
and big compression block size like 65535 bytes to mkulzma at the same time.
Then one obtains very good comression ratios (like 75% and more) but faces
the following problem.

geom_uncompress kernel module reports GEOM provider size rounded up to its
compression block size. Generally, this changes original media size and now
it fails to match the size of embedded UFS file system that leads to other
problems, f.e. geom_label kernel module does not like this and skips the
file system while tasting the GEOM and looking for UFS label.

This makes it impossible to refer to the file system using known UFS label
instead of something like /dev/map/rootfs.uncompress.

The following patch introduces new command line option "-r roundup" for makefs
that makes it round up the image to specified block size. Hence, geom_uncompress
does not change GEOM media size for images rounded that way and geom_label
accepts such GEOMs just fine.

With the patch applied, one can use following commands:

$ makefs -t ffs -r 65536 -o bsize=4096,fsize=512,label=flash optimization=space fs.img fs
$ mkulzma -s 65536 -o fs.img.ulzma fs.img

PR:		bin/203707
Submitted by:	<eugen@grosbein.net>
2015-10-13 02:32:15 +00:00
Jason A. Harmening
dcaa560af0 Ensure the client regions for unmapped bounce buffers created through bus_dmamap_load_phys() do not span multiple pages.
This is already done for mapped buffers.
While here, stop casting bus_addr_t to vm_offset_t.
2015-10-13 02:17:56 +00:00
Navdeep Parhar
ca7c0f2e2d iw_cxgbe: MPA v2 is always available.
Submitted by:	Krishnamraju Eraparaju at chelsio dot com
Reviewed by:	Steve Wise at opengridcomputing dot com
2015-10-13 01:04:38 +00:00
Peter Wemm
ff446b05f1 If world is built with a custom sendmail.cf, use it for the distribution
target.  This is the feeder for mergemaster / etcupdate.  This change
makes installworld/mergemaster/etcupdate behave the same regardless of
whether SENDMAIL_MC or SENDMAIL_CF is used.

If you use a custom SENDMAIL_MC/CF in make.conf and excluded it from
mergemaster.rc/etcupdate.conf to work around the conflicts, you may wish
to revert that or change it from 'ignore' to 'always install'.

If you do not use a custom SENDMAIL_MC/CF, there should be no change in
behavior.
2015-10-12 21:02:36 +00:00
David C Somayajulu
56c55e6513 Add support for reading device temperature
MFC after:5 days
2015-10-12 20:21:17 +00:00
Enji Cooper
59e2ff550c Integrate the tests from lib/libarchive, usr.bin/cpio, and usr.bin/tar in to
the FreeBSD test suite

functional_test.sh was ported from bin/sh/tests/functional_test.sh, as a
small wrapper around libarchive_test, bsdcpio_test, and bsdtar_test provided
by upstream.

A handful of testcases in lib/libarchive/tests have been disabled as they
were failing when run with kyua test (see BROKEN_TESTS in
lib/libarchive/tests/Makefile)

As a sidenote: this removes the check/test targets from the Makefiles as they
don't match the pattern used in the rest of the FreeBSD test suite.

MFC after: 2 weeks
Sponsored by: EMC / Isilon Storage Division
2015-10-12 18:31:21 +00:00
Alexander Motin
2269f420b2 FreeBSD-specific addition to r289191. 2015-10-12 18:15:25 +00:00
Alexander Motin
fea4f2108f MFV r289188: 6281 prefetching should apply to 1MB reads
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Paul Dagnelie <pcd@delphix.com>
Reviewed by: Alexander Motin <mav@freebsd.org>
Reviewed by: Dan McDonald <danmcd@omniti.com>
Reviewed by: Justin Gibbs <gibbs@scsiguy.com>
Reviewed by: Xin Li <delphij@freebsd.org>
Approved by: Gordon Ross <gordon.ross@nexenta.com>
Author: George Wilson <george.wilson@delphix.com>

illumos/illumos-gate@632802744e
2015-10-12 15:48:45 +00:00
Alexander Motin
558dcd4e42 MFV r289187: 6251 add tunable to disable free_bpobj processing
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Reviewed by: Simon Klinkert <simon.klinkert@gmail.com>
Reviewed by: Richard Elling <Richard.Elling@RichardElling.com>
Reviewed by: Albert Lee <trisk@omniti.com>
Reviewed by: Xin Li <delphij@freebsd.org>
Approved by: Garrett D'Amore <garrett@damore.org>
Author: George Wilson <george.wilson@delphix.com>

illumos/illumos-gate@139510fb6e
2015-10-12 15:44:44 +00:00
Alexander Motin
72b6ad9bb5 MFV r289185: 6250 zvol_dump_init() can hold txg open
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Reviewed by: Albert Lee <trisk@omniti.com>
Reviewed by: Xin Li <delphij@freebsd.org>
Approved by: Garrett D'Amore <garrett@damore.org>
Author: George Wilson <george.wilson@delphix.com>

illumos/illumos-gate@b10bba7246
2015-10-12 15:39:03 +00:00
Ed Maste
b54cfe0ae9 Add missing commas
Pointy hat to:	kan
Obtained from:	ELF Tool Chain r3253
2015-10-12 15:35:34 +00:00
Alexander Motin
ebdbbfb3b5 6281 prefetching should apply to 1MB reads
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Paul Dagnelie <pcd@delphix.com>
Reviewed by: Alexander Motin <mav@freebsd.org>
Reviewed by: Dan McDonald <danmcd@omniti.com>
Reviewed by: Justin Gibbs <gibbs@scsiguy.com>
Reviewed by: Xin Li <delphij@freebsd.org>
Approved by: Gordon Ross <gordon.ross@nexenta.com>
Author: George Wilson <george.wilson@delphix.com>

illumos/illumos-gate@632802744e
2015-10-12 14:27:27 +00:00
Alexander Motin
f9e9551e6b 6251 add tunable to disable free_bpobj processing
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Reviewed by: Simon Klinkert <simon.klinkert@gmail.com>
Reviewed by: Richard Elling <Richard.Elling@RichardElling.com>
Reviewed by: Albert Lee <trisk@omniti.com>
Reviewed by: Xin Li <delphij@freebsd.org>
Approved by: Garrett D'Amore <garrett@damore.org>
Author: George Wilson <george.wilson@delphix.com>

illumos/illumos-gate@139510fb6e
2015-10-12 14:24:11 +00:00
Eric van Gyzen
b7359cb33c Fix indentation in etc/rc.d/fsck.
MFC after:	3 days
Sponsored by:	Dell Inc.
2015-10-12 14:23:10 +00:00
Alexander Motin
1138983b22 6250 zvol_dump_init() can hold txg open
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Reviewed by: Albert Lee <trisk@omniti.com>
Reviewed by: Xin Li <delphij@freebsd.org>
Approved by: Garrett D'Amore <garrett@damore.org>
Author: George Wilson <george.wilson@delphix.com>

illumos/illumos-gate@b10bba7246
2015-10-12 14:23:00 +00:00
Peter Wemm
af80ed6add Update from svn-1.8.14 to 1.9.2.
Formal release notes are available:
  https://subversion.apache.org/docs/release-notes/1.9.html

Of particular note, the client checkout format has *not* changed so
upgrades should *not* be required.

When reading a repository (file:// or running as a local server), an
improved fsfs version 7 is available with significant performance
improvements.  An optional upgrade is possible to use the new features.
Without the upgrade, this is fully read/write compatible with the
version 6 fsfs as in svn-1.8.

Relnotes:	yes
2015-10-12 09:53:55 +00:00
Peter Wemm
dc5d469d65 Vendor import of subversion-1.9.2 2015-10-12 08:54:49 +00:00
Kevin Lo
dc82802918 Accept any correct frames from any source when MONITOR mode is used.
Submitted by:	Andriy Voskoboinyk <s3erios at gmail.com>
Differential Revision:	https://reviews.freebsd.org/D3812
2015-10-12 08:17:21 +00:00
Enji Cooper
b2d48be1bc Refactor the test/ Makefiles after recent changes to bsd.test.mk (r289158) and
netbsd-tests.test.mk (r289151)

- Eliminate explicit OBJTOP/SRCTOP setting
- Convert all ad hoc NetBSD test integration over to netbsd-tests.test.mk
- Remove unnecessary TESTSDIR setting
- Use SRCTOP where possible for clarity

MFC after: 2 weeks
Sponsored by: EMC / Isilon Storage Divison
2015-10-12 08:16:03 +00:00
Adrian Chadd
4f4a7a03ce net80211 drivers: eliminate any references to sc_rxtap_len/sc_txtap_len (never used here)
Submitted by:	<s3erios@gmail.com>
Differential Revision:	https://reviews.freebsd.org/D3776
2015-10-12 05:21:51 +00:00