Commit Graph

621 Commits

Author SHA1 Message Date
John Baldwin
f5e4c1052a Note that as a result of the SYSV IPC changes, COMPAT_FREEBSD[456] now
require COMPAT_FREEBSD7.  Also, explicitly note in NOTES that any version
of COMPAT_FREEBSD<n> effectively requires for newer binaries (i.e.
COMPAT_FREEBSD<n+1>, etc.).  While this has been true in practice
previously, it used to compile ok before the commit earlier this week.

Discussed with:	peter
Approved by:	re (kensmith)
2009-06-26 17:50:52 +00:00
Doug Barton
b5820f18cc Revert the entry about pf and ipfw starting before netif 2009-06-26 01:10:10 +00:00
Bjoern A. Zeeb
b58ea5f310 Move virtualization of routing related variables into their own
Vimage module, which had been there already but now is stateful.

All variables are now file local; so this further limits the global
spreading of routing related things throughout the kernel.

Add a missing function local variable in case of MPATHing.

Reviewed by:	zec
2009-06-22 17:48:16 +00:00
Brooks Davis
838d985825 Rework the credential code to support larger values of NGROUPS and
NGROUPS_MAX, eliminate ABI dependencies on them, and raise the to 1024
and 1023 respectively.  (Previously they were equal, but under a close
reading of POSIX, NGROUPS_MAX was defined to be too large by 1 since it
is the number of supplemental groups, not total number of groups.)

The bulk of the change consists of converting the struct ucred member
cr_groups from a static array to a pointer.  Do the equivalent in
kinfo_proc.

Introduce new interfaces crcopysafe() and crsetgroups() for duplicating
a process credential before modifying it and for setting group lists
respectively.  Both interfaces take care for the details of allocating
groups array. crsetgroups() takes care of truncating the group list
to the current maximum (NGROUPS) if necessary.  In the future,
crsetgroups() may be responsible for insuring invariants such as sorting
the supplemental groups to allow groupmember() to be implemented as a
binary search.

Because we can not change struct xucred without breaking application
ABIs, we leave it alone and introduce a new XU_NGROUPS value which is
always 16 and is to be used or NGRPS as appropriate for things such as
NFS which need to use no more than 16 groups.  When feasible, truncate
the group list rather than generating an error.

Minor changes:
  - Reduce the number of hand rolled versions of groupmember().
  - Do not assign to both cr_gid and cr_groups[0].
  - Modify ipfw to cache ucreds instead of part of their contents since
    they are immutable once referenced by more than one entity.

Submitted by:	Isilon Systems (initial implementation)
X-MFC after:	never
PR:		bin/113398 kern/133867
2009-06-19 17:10:35 +00:00
Attilio Rao
651175c9db Introduce support for adaptive spinning in lockmgr.
Actually, as it did receive few tuning, the support is disabled by
default, but it can opt-in with the option ADAPTIVE_LOCKMGRS.
Due to the nature of lockmgrs, adaptive spinning needs to be
selectively enabled for any interested lockmgr.
The support is bi-directional, or, in other ways, it will work in both
cases if the lock is held in read or write way.  In particular, the
read path is passible of further tunning using the sysctls
debug.lockmgr.retries and debug.lockmgr.loops .  Ideally, such sysctls
should be axed or compiled out before release.

Addictionally note that adaptive spinning doesn't cope well with
LK_SLEEPFAIL.  The reason is that many (and probabilly all) consumers
of LK_SLEEPFAIL are mainly interested in knowing if the interlock was
dropped or not in order to reacquire it and re-test initial conditions.
This directly interacts with adaptive spinning because lockmgr needs
to drop the interlock while spinning in order to avoid a deadlock
(further details in the comments inside the patch).

Final note: finding someone willing to help on tuning this with
relevant workloads would be either very important and appreciated.

Tested by:	jeff, pho
Requested by:	many
2009-06-17 01:55:42 +00:00
Sam Leffler
2c727cb9aa note abi change for IEEE80211_IOC_STA_INFO 2009-06-13 23:44:56 +00:00
Marko Zec
f089869fa5 Introduce a mechanism for detecting calls from outbound path of the
network stack when reentering the inbound path from netgraph, and
force queueing of mbufs at the outbound netgraph node.

The mechanism relies on two components.  First, in netgraph nodes
where outbound path of the network stack calls into netgraph, the
current thread has to be appropriately marked using the new
NG_OUTBOUND_THREAD_REF() macro before proceeding to call further
into the netgraph topology, and unmarked using the
NG_OUTBOUND_THREAD_UNREF() macro before returning to the caller.
Second, netgraph nodes which can potentially reenter the network
stack in the inbound path have to mark their inbound hooks using
NG_HOOK_SET_TO_INBOUND() macro.  The netgraph framework will then
detect when there is a danger of a call graph looping back from
outbound to inbound path via netgraph, and defer handing off the
mbufs to the "inbound" node to a worker thread with a clean stack.

In this first pass only the most obvious netgraph nodes have been
updated to ensure no outbound to inbound calls can occur.  Nodes
such as ng_ipfw, ng_gif etc. should be further examined whether a
potential for outbound to inbound call looping exists.

This commit changes the layout of struct thread, but due to
__FreeBSD_version number shortage a version bump has been omitted
at this time, nevertheless kernel and modules have to be rebuilt.

Reviewed by:	julian, rwatson, bz
Approved by:	julian (mentor)
2009-06-11 16:50:49 +00:00
Marko Zec
bc29160df3 Introduce an infrastructure for dismantling vnet instances.
Vnet modules and protocol domains may now register destructor
functions to clean up and release per-module state.  The destructor
mechanisms can be triggered by invoking "vimage -d", or a future
equivalent command which will be provided via the new jail framework.

While this patch introduces numerous placeholder destructor functions,
many of those are currently incomplete, thus leaking memory or (even
worse) failing to stop all running timers.  Many of such issues are
already known and will be incrementaly fixed over the next weeks in
smaller incremental commits.

Apart from introducing new fields in structs ifnet, domain, protosw
and vnet_net, which requires the kernel and modules to be rebuilt, this
change should have no impact on nooptions VIMAGE builds, since vnet
destructors can only be called in VIMAGE kernels.  Moreover,
destructor functions should be in general compiled in only in
options VIMAGE builds, except for kernel modules which can be safely
kldunloaded at run time.

Bump __FreeBSD_version to 800097.
Reviewed by:	bz, julian
Approved by:	rwatson, kib (re), julian (mentor)
2009-06-08 17:15:40 +00:00
Ed Schouten
89f98d57d6 Remove window(1) from the base system.
Some time ago Tom Rhodes sent me an email that he was willing to perform
various cleanups to the window(1) source code. After some discussion, we
both decided the best thing to do, was to move window(1) to the ports
tree. The application isn't used a lot nowadays, mainly because it has
been superseeded by screen, tmux, etc.

A couple of hours ago Tom committed window(1) to ports (misc/window), so
I'm removing it from the tree. I don't think people will really miss it,
but I'm describing the change in UPDATING anyway.

Discussed with:	trhodes, pav, kib
Approved by:	re
2009-06-02 13:44:36 +00:00
Doug Barton
ce62079b6b Add a note about the change to rcorder for pf and ipfw. 2009-06-01 22:47:59 +00:00
Bjoern A. Zeeb
ab1a4d4834 Decrement __FreeBSD_version again to 96 as we are runing out of digits
and want to be conservative - so not more than one version bump per day.

Discussed with:	jhb, kensmith
2009-06-01 18:07:38 +00:00
Robert Watson
529cb8e371 Update UPDATING for NETISR2 merge, fix a typo in another UPDATING entry. 2009-06-01 16:00:36 +00:00
Bjoern A. Zeeb
c2c2a7c11e Convert the two dimensional array to be malloced and introduce
an accessor function to get the correct rnh pointer back.

Update netstat to get the correct pointer using kvm_read()
as well.

This not only fixes the ABI problem depending on the kernel
option but also permits the tunable to overwrite the kernel
option at boot time up to MAXFIBS, enlarging the number of
FIBs without having to recompile. So people could just use
GENERIC now.

Reviewed by:	julian, rwatson, zec
X-MFC:		not possible
2009-06-01 15:49:42 +00:00
Attilio Rao
faef64cc39 Remove the now invalid (and possibly unused) debug.mpsafevfs
sysctl/tunable.

Reviewed by:	emaste
Sponsored by:	Sandvine Incorporated
2009-05-30 23:52:23 +00:00
Edward Tomasz Napierala
2a61ba476b Bump __FreeBSD_version after addition of VOP_ACCESSX(9). 2009-05-30 14:01:01 +00:00
Maxim Konovalov
2a5f2c1d7f o Add missed quotation mark. 2009-05-29 19:45:39 +00:00
Edward Tomasz Napierala
b89fed6747 Update __FreeBSD_version after addition of mnt_xflag. Add a note
to UPDATING.
2009-05-29 18:50:27 +00:00
Attilio Rao
1ae1c2a3bd Reverse the logic for ADAPTIVE_SX option and enable it by default.
Introduce for this operation the reverse NO_ADAPTIVE_SX option.
The flag SX_ADAPTIVESPIN to be passed to sx_init_flags(9) gets suppressed
and the new flag, offering the reversed logic, SX_NOADAPTIVE is added.

Additively implements adaptive spininning for sx held in shared mode.
The spinning limit can be handled through sysctls in order to be tuned
while the code doesn't reach the release, after which time they should
be dropped probabilly.

This change has made been necessary by recent benchmarks where it does
improve concurrency of workloads in presence of high contention
(ie. ZFS).

KPI breakage is documented by __FreeBSD_version bumping, manpage and
UPDATING updates.

Requested by:	jeff, kmacy
Reviewed by:	jeff
Tested by:	pho
2009-05-29 01:49:27 +00:00
Jamie Gritton
0304c73163 Add hierarchical jails. A jail may further virtualize its environment
by creating a child jail, which is visible to that jail and to any
parent jails.  Child jails may be restricted more than their parents,
but never less.  Jail names reflect this hierarchy, being MIB-style
dot-separated strings.

Every thread now points to a jail, the default being prison0, which
contains information about the physical system.  Prison0's root
directory is the same as rootvnode; its hostname is the same as the
global hostname, and its securelevel replaces the global securelevel.
Note that the variable "securelevel" has actually gone away, which
should not cause any problems for code that properly uses
securelevel_gt() and securelevel_ge().

Some jail-related permissions that were kept in global variables and
set via sysctls are now per-jail settings.  The sysctls still exist for
backward compatibility, used only by the now-deprecated jail(2) system
call.

Approved by:	bz (mentor)
2009-05-27 14:11:23 +00:00
Marko Zec
37f17770e0 V_irtualize the if_clone framework, thus allowing for clonable ifnets
to optionally have overlapping unit numbers if attached in different
vnets.

At this stage if_loop is the only clonable ifnet class that has been
extended to allow for such overlapping allocation of unit numbers, i.e.
in each vnet it is possible to have a lo0 interface.  Other clonable ifnet
classes remain to operate with traditional semantics, i.e. each instance
of a clonable ifnet will be assigned a globally unique unit number,
regardless in which vnet such an ifnet becomes instantiated.

While here, garbage collect unused _lo_list field in struct vnet_net,
as well as improve indentation for #defines in sys/net/vnet.h.

The layout of struct vnet_net has changed, therefore bump
__FreeBSD_version.

This change has no functional impact on nooptions VIMAGE kernel builds.

Reviewed by:	bz, brooks
Approved by:	julian (mentor)
2009-05-23 21:43:44 +00:00
Joel Dahl
813bb2c94e Fix minor typo. 2009-05-23 09:24:07 +00:00
Edwin Groothuis
609e2d1b62 Rework the text for the import of zic(8) at 20090523.
Suggested by Niclas Zeising (and he was absolutely right on it!)
2009-05-23 08:49:55 +00:00
Edwin Groothuis
dfc79e892f MFV of tzcode2009e:
Upgrade of the tzcode from 2004a to 2009e.

Changes are numerous, but include...

- New format of the output of zic, which supports both 32 and 64
  bit time_t formats.

- zdump on 64 bit platforms will actually produce some output instead
  of doing nothing for a looooooooong time.

- linux_base-fX, with X >= at least 8, will work without problems related
  to the local time again.

The original patch, based on the 2008e, has been running for a long
time on both my laptop and desktop machine and have been tested by
other people.

After the installation of this code and the running of zic(8), you
need to run tzsetup(8) again to install the new datafile.

Approved by:	wollman@ for usr.sbin/zic
MFC after:	1 month
2009-05-23 06:31:50 +00:00
Andrew Thompson
9360ae4073 Rename the usb sysctl tree from hw.usb2.* back to hw.usb.*.
Submitted by:	Hans Petter Selasky
2009-05-21 01:48:42 +00:00
Sam Leffler
23790ac0d7 bump for net80211 monitor mode changes 2009-05-20 20:05:56 +00:00
Marko Zec
f6dfe47a14 Permit buiding kernels with options VIMAGE, restricted to only a single
active network stack instance.  Turning on options VIMAGE at compile
time yields the following changes relative to default kernel build:

1) V_ accessor macros for virtualized variables resolve to structure
fields via base pointers, instead of being resolved as fields in global
structs or plain global variables.  As an example, V_ifnet becomes:

    options VIMAGE:          ((struct vnet_net *) vnet_net)->_ifnet
    default build:           vnet_net_0._ifnet
    options VIMAGE_GLOBALS:  ifnet

2) INIT_VNET_* macros will declare and set up base pointers to be used
by V_ accessor macros, instead of resolving to whitespace:

    INIT_VNET_NET(ifp->if_vnet); becomes

    struct vnet_net *vnet_net = (ifp->if_vnet)->mod_data[VNET_MOD_NET];

3) Memory for vnet modules registered via vnet_mod_register() is now
allocated at run time in sys/kern/kern_vimage.c, instead of per vnet
module structs being declared as globals.  If required, vnet modules
can now request the framework to provide them with allocated bzeroed
memory by filling in the vmi_size field in their vmi_modinfo structures.

4) structs socket, ifnet, inpcbinfo, tcpcb and syncache_head are
extended to hold a pointer to the parent vnet.  options VIMAGE builds
will fill in those fields as required.

5) curvnet is introduced as a new global variable in options VIMAGE
builds, always pointing to the default and only struct vnet.

6) struct sysctl_oid has been extended with additional two fields to
store major and minor virtualization module identifiers, oid_v_subs and
oid_v_mod.  SYSCTL_V_* family of macros will fill in those fields
accordingly, and store the offset in the appropriate vnet container
struct in oid_arg1.
In sysctl handlers dealing with virtualized sysctls, the
SYSCTL_RESOLVE_V_ARG1() macro will compute the address of the target
variable and make it available in arg1 variable for further processing.

Unused fields in structs vnet_inet, vnet_inet6 and vnet_ipfw have
been deleted.

Reviewed by:	bz, rwatson
Approved by:	julian (mentor)
2009-04-30 13:36:26 +00:00
Bruce M Simpson
33cde13046 Bite the bullet, and make the IPv6 SSM and MLDv2 mega-commit:
import from p4 bms_netdev.  Summary of changes:

 * Connect netinet6/in6_mcast.c to build.
   The legacy KAME KPIs are mostly preserved.
 * Eliminate now dead code from ip6_output.c.
   Don't do mbuf bingo, we are not going to do RFC 2292 style
   CMSG tricks for multicast options as they are not required
   by any current IPv6 normative reference.
 * Refactor transports (UDP, raw_ip6) to do own mcast filtering.
   SCTP, TCP unaffected by this change.
 * Add ip6_msource, in6_msource structs to in6_var.h.
 * Hookup mld_ifinfo state to in6_ifextra, allocate from
   domifattach path.
 * Eliminate IN6_LOOKUP_MULTI(), it is no longer referenced.
   Kernel consumers which need this should use in6m_lookup().
 * Refactor IPv6 socket group memberships to use a vector (like IPv4).
 * Update ifmcstat(8) for IPv6 SSM.
 * Add witness lock order for IN6_MULTI_LOCK.
 * Move IN6_MULTI_LOCK out of lower ip6_output()/ip6_input() paths.
 * Introduce IP6STAT_ADD/SUB/INC/DEC as per rwatson's IPv4 cleanup.
 * Update carp(4) for new IPv6 SSM KPIs.
 * Virtualize ip6_mrouter socket.
   Changes mostly localized to IPv6 MROUTING.
 * Don't do a local group lookup in MROUTING.
 * Kill unused KAME prototypes in6_purgemkludge(), in6_restoremkludge().
 * Preserve KAME DAD timer jitter behaviour in MLDv1 compatibility mode.
 * Bump __FreeBSD_version to 800084.
 * Update UPDATING.

NOTE WELL:
 * This code hasn't been tested against real MLDv2 queriers
   (yet), although the on-wire protocol has been verified in Wireshark.
 * There are a few unresolved issues in the socket layer APIs to
   do with scope ID propagation.
 * There is a LOR present in ip6_output()'s use of
   in6_setscope() which needs to be resolved. See comments in mld6.c.
   This is believed to be benign and can't be avoided for the moment
   without re-introducing an indirect netisr.

This work was mostly derived from the IGMPv3 implementation, and
has been sponsored by a third party.
2009-04-29 19:19:13 +00:00
Xin LI
f146c211e2 Some minor formatting changes to make new text match old style. 2009-04-24 15:38:13 +00:00
Renato Botelho
8713ec3db7 - Add a single line separating two 20090415 entries
Approved by:	brueffer
2009-04-24 11:34:59 +00:00
Robert Watson
8b8bf77543 Add UPDATING note about change to struct malloc_type -- following several
reports of panics, remind readers that rebuilding kernel modules between
kernel upgrades in HEAD is a good idea.
2009-04-24 09:58:50 +00:00
Maksim Yevmenkin
131cdffb53 Bump __FreeBSD_version. Add UPDATING entry about low-level Bluetooth HCI API. 2009-04-22 15:54:27 +00:00
Kip Macy
773b573a96 - add second flags field to to inpcb
- update comments in vflag
2009-04-15 22:09:42 +00:00
Kip Macy
de4ab55e43 add an llentry to struct route{_in6} to allow it to be passed around with
the rtentry
2009-04-15 20:34:19 +00:00
Kip Macy
427ac07f05 Extend route command:
- add show as alias for get
	- add weights to allow mpath to do more than equal cost
	- add sticky / nostick to disable / re-enable per-connection load balancing

This adds a field to rt_metrics_lite so network bits of world will need to be re-built.

Reviewed by:	jeli & qingli
2009-04-14 23:05:36 +00:00
Maksim Yevmenkin
874379551b Add entry about kbdmux(4) un-locking. 2009-04-12 19:42:25 +00:00
Marko Zec
2f6a18582c A belated note on layout change of certain V_ containers.
Approved by:	julian (mentor)
2009-04-08 18:30:42 +00:00
Ivan Voras
9a07b54848 Separate the GEOM_PART entry into paragraphs with differences from old
slicers. Add more notes.

Reviewed by:	marcel (implicit)
Approved by:	gnn (mentor) (implicit)
2009-03-20 23:13:32 +00:00
Ivan Voras
781d043cc7 Note that GEOM_PART is on by default in 8-CURRENT and how it's different
from older slices.

OKed by:	marcel
Approved by:	gnn (mentor)
2009-03-20 21:51:27 +00:00
Andrew Thompson
2b78d30630 Remove the uscanner(4) driver, this follows the removal of the kernel scanner
driver in Linux 2.6. uscanner was just a simple wrapper around a fifo and
contained no logic, the default interface is now libusb (supported by sane).

Reviewed by:	HPS
2009-03-19 20:33:26 +00:00
Bruce M Simpson
443fc3176d Introduce a number of changes to the MROUTING code.
This is purely a forwarding plane cleanup; no control plane
code is involved.

Summary:
 * Split IPv4 and IPv6 MROUTING support. The static compile-time
   kernel option remains the same, however, the modules may now
   be built for IPv4 and IPv6 separately as ip_mroute_mod and
   ip6_mroute_mod.
 * Clean up the IPv4 multicast forwarding code to use BSD queue
   and hash table constructs. Don't build our own timer abstractions
   when ratecheck() and timevalclear() etc will do.
 * Expose the multicast forwarding cache (MFC) and virtual interface
   table (VIF) as sysctls, to reduce netstat's dependence on libkvm
   for this information for running kernels.
   * bandwidth meters however still require libkvm.
 * Make the MFC hash table size a boot/load-time tunable ULONG,
   net.inet.ip.mfchashsize (defaults to 256).
 * Remove unused members from struct vif and struct mfc.
 * Kill RSVP support, as no current RSVP implementation uses it.
   These stubs could be moved to raw_ip.c.
 * Don't share locks or initialization between IPv4 and IPv6.
 * Don't use a static struct route_in6 in ip6_mroute.c.
   The v6 code is still using a cached struct route_in6, this is
   moved to mif6 for the time being.
 * More cleanup remains to be merged from ip_mroute.c to ip6_mroute.c.

v4 path tested using ports/net/mcast-tools.
v6 changes are mostly mechanical locking and *have not* been tested.
As these changes partially break some kernel ABIs, they will not
be MFCed. There is a lot more work to be done here.

Reviewed by:	Pavlin Radoslavov
2009-03-19 01:43:03 +00:00
Robert Watson
1df143759b Mention specifically in UPDATING that non-MPSAFE device drivers are no
longer supported.
2009-03-15 16:12:50 +00:00
Gabor Kovesdan
7e06afcad3 - Add an entry about enabling libc NLS support 2009-03-13 16:40:56 +00:00
Rui Paulo
e667034d80 Mention k8temp -> amdtemp rename.
MFC after:	2 weeks
2009-03-13 16:30:33 +00:00
Andrew Thompson
3296f80d98 Fix spelling. 2009-03-09 22:43:00 +00:00
Andrew Thompson
0ee5826e59 Update 20090309 to say that libmap.conf entries for libusb are no longer needed. 2009-03-09 22:42:01 +00:00
Stanislav Sedov
cb2fe9b1bb - Fix a typo.
Spotted by:	Steve Kargl <sgk@troutmask.apl.washington.edu>
2009-03-09 19:56:37 +00:00
Stanislav Sedov
f3106cde19 - Point libusb users to the ports collection UPDATING file. 2009-03-09 19:22:45 +00:00
Bruce M Simpson
d10910e6ce Merge IGMPv3 and Source-Specific Multicast (SSM) to the FreeBSD
IPv4 stack.

Diffs are minimized against p4.
PCS has been used for some protocol verification, more widespread
testing of recorded sources in Group-and-Source queries is needed.
sizeof(struct igmpstat) has changed.

__FreeBSD_version is bumped to 800070.
2009-03-09 17:53:05 +00:00
Andrew Thompson
a091d2a525 Install libusb20.so.1 as libusb.so.1, there will be a followup commit to the
ports tree so that programs use libusb from the base by default. Thanks to
Stanislav Sedov for sorting out the ports build.

Bump __FreeBSD_version to 800069

Help and testing by:	stas
2009-03-09 17:05:31 +00:00
Konstantin Belousov
9f960e98aa Hopefully, improve the grammar and wording in the changes to shmctl(2)
manpage and UPDATING entry 20090302.

UPDATING changes suggested by bf2006a yahoo com.
man page corrections by bde.
2009-03-05 12:04:42 +00:00