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History log of /src/sys/net/if_ppp.c
RevisionDateAuthorComments
 1.173  05-Jul-2024  rin sys: Drop redundant NULL check before m_freem(9)

m_freem(9) safely has accepted NULL argument at least since 4.2BSD:
https://www.tuhs.org/cgi-bin/utree.pl?file=4.2BSD/usr/src/sys/sys/uipc_mbuf.c

Compile-tested on amd64/ALL.

Suggested by knakahara@
 1.172  03-Sep-2022  thorpej branches: 1.172.8; 1.172.10;
Garbage-collect the remaining vestiges of netisr.
 1.171  27-Aug-2022  thorpej Ensure that all queues passed to ifq_enqueue2() have a valid ifq_lock.
 1.170  27-Aug-2022  thorpej Consistently use IFQ_SET_MAXLEN(), rather than open-coding it. NFC.
 1.169  06-Jul-2022  riastradh net/if_ppp.c: Avoid user-controlled overrun in PPPIOCSCOMPRESS.

Reported-by: syzbot+2c7bda7dc2b6c0d4f279@syzkaller.appspotmail.com
 1.168  06-Jul-2022  riastradh net/if_ppp.c: Sprinkle KNF. No functional change intended.
 1.167  29-Jan-2020  thorpej Adopt <net/if_stats.h>.
 1.166  20-Sep-2019  maxv branches: 1.166.2;
dedup
 1.165  25-Jun-2019  msaitoh Simplify "LIST_HEAD();" to make the code more understandable.
No functional change.
 1.164  25-Jan-2019  knakahara Add __cacheline_aligned to ppp softc list and its mutex just in case.
 1.163  11-Jan-2019  knakahara Fix missing splx in ppp_inproc().
 1.162  11-Jan-2019  knakahara Fix missing mutex_exit in ppp_create().
 1.161  26-Jun-2018  msaitoh branches: 1.161.2;
Implement the BPF direction filter (BIOC[GS]DIRECTION). It provides backward
compatibility with BIOC[GS]SEESENT ioctl. The userland interface is the same
as FreeBSD.

This change also fixes a bug that the direction is misunderstand on some
environment by passing the direction to bpf_mtap*() instead of checking
m->m_pkthdr.rcvif.
 1.160  25-Jun-2018  msaitoh Remove duplicated inclusion of net/bpf.h.
 1.159  17-Sep-2017  christos branches: 1.159.2;
Add one more not supported error
 1.158  02-Oct-2016  christos branches: 1.158.8;
MFREE -> m_free
 1.157  07-Aug-2016  christos modularize some more drivers and merge the module glue
 1.156  06-Aug-2016  pgoyette Destroy the mutex when detaching ppp. Otherwise on a re-attach (ie,
module reload) we can end up with a panic "lock already initialized"
 1.155  06-Aug-2016  christos make strip and slip modular, and cosmetic for ppp.
 1.154  06-Aug-2016  pgoyette Change the internal name of the module to match its external (file
system) name. Otherwise "bad things" can happen, such as modload(8)
being able to load a second copy!
 1.153  06-Aug-2016  pgoyette Modularize the ppp driver, and adjust dependencies of the compressor
modules.

For now, this is still included as a built-in module in GENERIC kernels.
 1.152  10-Jun-2016  ozaki-r branches: 1.152.2;
Introduce m_set_rcvif and m_reset_rcvif

The API is used to set (or reset) a received interface of a mbuf.
They are counterpart of m_get_rcvif, which will come in another
commit, hide internal of rcvif operation, and reduce the diff of
the upcoming change.

No functional change.
 1.151  28-Apr-2016  ozaki-r Constify rtentry of if_output

We no longer need to change rtentry below if_output.

The change makes it clear where rtentries are changed (or not)
and helps forthcoming locking (os psrefing) rtentries.
 1.150  20-Apr-2016  knakahara IFQ_ENQUEUE refactor (3/3) : eliminate pktattr argument from IFQ_ENQUEUE caller
 1.149  24-Aug-2015  pooka sprinkle _KERNEL_OPT
 1.148  20-Aug-2015  uebayasi Honor pseudo attach decl generated by config(1).
 1.147  20-Apr-2015  roy Introduce p2p_rtrequest() so that IFF_POINTOPOINT interfaces can work
with RTF_LOCAL.
Fixes PR kern/49829.
 1.146  01-Jul-2014  msaitoh branches: 1.146.4;
KNF. No functional change.
 1.145  30-Jun-2014  ozaki-r Cleanup ppp_inproc

- Remove unnecessary variable isr
- Use pktq instead of rv to switch between inet/inet6 and other protocols

ok msaitoh@ and rmind@
 1.144  05-Jun-2014  rmind - Implement pktqueue interface for lockless IP input queue.
- Replace ipintrq and ip6intrq with the pktqueue mechanism.
- Eliminate kernel-lock from ipintr() and ip6intr().
- Some preparation work to push softnet_lock out of ipintr().

Discussed on tech-net.
 1.143  17-May-2014  rmind ppp_inproc: handle non-IP protocols correctly (hi msaitoh); PR/48813.
 1.142  15-May-2014  msaitoh Save a NETISR_* value in a variable and call schednetisr() after enqueue
a packet for readability and future modification.
 1.141  18-Sep-2013  rmind branches: 1.141.2;
Add bpf_filter_ext() to use with BPF COP, restore bpf_filter() as it was
originally to preserve compatibility. Similarly, add bpf_validate_ext()
which takes bpf_ctx_t.
 1.140  30-Aug-2013  rmind bpf_filter: add a custom argument which can be passed to coprocessor routine.
 1.139  29-Aug-2013  rmind Implement BPF_COP/BPF_COPX instructions in the misc category (BPF_MISC)
which add a capability to call external functions in a predetermined way.

It can be thought as a BPF "coprocessor" -- a generic mechanism to offload
more complex packet inspection operations. There is no default coprocessor
and this functionality is not targeted to the /dev/bpf. This is primarily
targeted to the kernel subsystems, therefore there is no way to set a custom
coprocessor at the userlevel.

Discussed on: tech-net@
OK: core@
 1.138  25-Nov-2012  mbalmer branches: 1.138.2;
Don't check mp for NULL twice. From Michael W. Bomardieri <mb@il.net>
via tech-net@NetBSD.org. Thanks!
 1.137  11-Oct-2012  christos PR/47058: Antti Kantee: If the ipv6 flow code modifies the mbuf, pass the
change up to the caller.
 1.136  28-Oct-2011  dyoung branches: 1.136.2; 1.136.8; 1.136.12;
For these interfaces, the implementation of SIOCSIFDSTADDR is identical
to SIOCINITIFADDR, and SIOCSIFDSTADDR callers always fall back to
SIOCINITIFADDR, so just get rid of the SIOCSIFDSTADDR case.
 1.135  28-Oct-2011  dyoung Don't kauth-orize SIOCSIFMTU in pppsioctl() and stf_ioctl(), ifioctl()
has already done that for us.
 1.134  07-Aug-2011  rmind Convert ppp_list_lock to mutex(9).
 1.133  02-Apr-2011  mbalmer Fix misplaced parenthesis. From henning.petersen@t-online.de, thanks.
 1.132  21-Aug-2010  pgoyette branches: 1.132.2;
Update the rest of the kernel to conform to the module subsystem's new
locking protocol.
 1.131  05-Apr-2010  joerg Push the bpf_ops usage back into bpf.h. Push the common ifp->if_bpf
check into the inline functions as well the fourth argument for
bpf_attach.
 1.130  19-Jan-2010  pooka branches: 1.130.2; 1.130.4;
Redefine bpf linkage through an always present op vector, i.e.
#if NBPFILTER is no longer required in the client. This change
doesn't yet add support for loading bpf as a module, since drivers
can register before bpf is attached. However, callers of bpf can
now be modularized.

Dynamically loadable bpf could probably be done fairly easily with
coordination from the stub driver and the real driver by registering
attachments in the stub before the real driver is loaded and doing
a handoff. ... and I'm not going to ponder the depths of unload
here.

Tested with i386/MONOLITHIC, modified MONOLITHIC without bpf and rump.
 1.129  15-Apr-2009  elad Remove a few KAUTH_GENERIC_ISSUSER in favor of more descriptive
alternatives.

Discussed on tech-kern:

http://mail-index.netbsd.org/tech-kern/2009/04/11/msg004798.html

Input from ad@, christos@, dyoung@, tsutsui@.

Okay ad@.
 1.128  19-Jan-2009  yamt branches: 1.128.2;
ppp_get_compressor: take module_lock when trying to load a module. PR/40428
 1.127  17-Dec-2008  cegger kill MALLOC and FREE macros.
 1.126  29-Nov-2008  cube Fix handling of ppp compressor modules, from Andrew Doran's input.
- ref count each compressor
- allow {un,}registration of several modules at once
- une RUN_ONCE to make sure the mutex is initialised, because
unfortunately built-in (and bootloader-loaded) modules init functions
are run before pseudo-devices attach (reported by Nick Hudson).
 1.125  25-Nov-2008  cube Rework the way PPP compmressors are handled and allow them to be
automatically loaded when needed.
 1.124  07-Nov-2008  dyoung *** Summary ***

When a link-layer address changes (e.g., ifconfig ex0 link
02:de:ad:be:ef:02 active), send a gratuitous ARP and/or a Neighbor
Advertisement to update the network-/link-layer address bindings
on our LAN peers.

Refuse a change of ethernet address to the address 00:00:00:00:00:00
or to any multicast/broadcast address. (Thanks matt@.)

Reorder ifnet ioctl operations so that driver ioctls may inherit
the functions of their "class"---ether_ioctl(), fddi_ioctl(), et
cetera---and the class ioctls may inherit from the generic ioctl,
ifioctl_common(), but both driver- and class-ioctls may override
the generic behavior. Make network drivers share more code.

Distinguish a "factory" link-layer address from others for the
purposes of both protecting that address from deletion and computing
EUI64.

Return consistent, appropriate error codes from network drivers.

Improve readability. KNF.

*** Details ***

In if_attach(), always initialize the interface ioctl routine,
ifnet->if_ioctl, if the driver has not already initialized it.
Delete if_ioctl == NULL tests everywhere else, because it cannot
happen.

In the ioctl routines of network interfaces, inherit common ioctl
behaviors by calling either ifioctl_common() or whichever ioctl
routine is appropriate for the class of interface---e.g., ether_ioctl()
for ethernets.

Stop (ab)using SIOCSIFADDR and start to use SIOCINITIFADDR. In
the user->kernel interface, SIOCSIFADDR's argument was an ifreq,
but on the protocol->ifnet interface, SIOCSIFADDR's argument was
an ifaddr. That was confusing, and it would work against me as I
make it possible for a network interface to overload most ioctls.
On the protocol->ifnet interface, replace SIOCSIFADDR with
SIOCINITIFADDR. In ifioctl(), return EPERM if userland tries to
invoke SIOCINITIFADDR.

In ifioctl(), give the interface the first shot at handling most
interface ioctls, and give the protocol the second shot, instead
of the other way around. Finally, let compatibility code (COMPAT_OSOCK)
take a shot.

Pull device initialization out of switch statements under
SIOCINITIFADDR. For example, pull ..._init() out of any switch
statement that looks like this:

switch (...->sa_family) {
case ...:
..._init();
...
break;
...
default:
..._init();
...
break;
}

Rewrite many if-else clauses that handle all permutations of IFF_UP
and IFF_RUNNING to use a switch statement,

switch (x & (IFF_UP|IFF_RUNNING)) {
case 0:
...
break;
case IFF_RUNNING:
...
break;
case IFF_UP:
...
break;
case IFF_UP|IFF_RUNNING:
...
break;
}

unifdef lots of code containing #ifdef FreeBSD, #ifdef NetBSD, and
#ifdef SIOCSIFMTU, especially in fwip(4) and in ndis(4).

In ipw(4), remove an if_set_sadl() call that is out of place.

In nfe(4), reuse the jumbo MTU logic in ether_ioctl().

Let ethernets register a callback for setting h/w state such as
promiscuous mode and the multicast filter in accord with a change
in the if_flags: ether_set_ifflags_cb() registers a callback that
returns ENETRESET if the caller should reset the ethernet by calling
if_init(), 0 on success, != 0 on failure. Pull common code from
ex(4), gem(4), nfe(4), sip(4), tlp(4), vge(4) into ether_ioctl(),
and register if_flags callbacks for those drivers.

Return ENOTTY instead of EINVAL for inappropriate ioctls. In
zyd(4), use ENXIO instead of ENOTTY to indicate that the device is
not any longer attached.

Add to if_set_sadl() a boolean 'factory' argument that indicates
whether a link-layer address was assigned by the factory or some
other source. In a comment, recommend using the factory address
for generating an EUI64, and update in6_get_hw_ifid() to prefer a
factory address to any other link-layer address.

Add a routing message, RTM_LLINFO_UPD, that tells protocols to
update the binding of network-layer addresses to link-layer addresses.
Implement this message in IPv4 and IPv6 by sending a gratuitous
ARP or a neighbor advertisement, respectively. Generate RTM_LLINFO_UPD
messages on a change of an interface's link-layer address.

In ether_ioctl(), do not let SIOCALIFADDR set a link-layer address
that is broadcast/multicast or equal to 00:00:00:00:00:00.

Make ether_ioctl() call ifioctl_common() to handle ioctls that it
does not understand.

In gif(4), initialize if_softc and use it, instead of assuming that
the gif_softc and ifp overlap.

Let ifioctl_common() handle SIOCGIFADDR.

Sprinkle rtcache_invariants(), which checks on DIAGNOSTIC kernels
that certain invariants on a struct route are satisfied.

In agr(4), rewrite agr_ioctl_filter() to be a bit more explicit
about the ioctls that we do not allow on an agr(4) member interface.

bzero -> memset. Delete unnecessary casts to void *. Use
sockaddr_in_init() and sockaddr_in6_init(). Compare pointers with
NULL instead of "testing truth". Replace some instances of (type
*)0 with NULL. Change some K&R prototypes to ANSI C, and join
lines.
 1.123  15-Jun-2008  christos branches: 1.123.2; 1.123.4;
- add if_alloc (ours just mallocs), and if_initname and use them (from FreeBSD)
- kill memsets where M_ZERO can be used.
 1.122  24-Apr-2008  ad branches: 1.122.2; 1.122.4; 1.122.6;
Merge the socket locking patch:

- Socket layer becomes MP safe.
- Unix protocols become MP safe.
- Allows protocol processing interrupts to safely block on locks.
- Fixes a number of race conditions.

With much feedback from matt@ and plunky@.
 1.121  07-Feb-2008  dyoung branches: 1.121.6; 1.121.8;
Start patching up the kernel so that a network driver always has
the opportunity to handle an ioctl before generic ifioctl handling
occurs. This will ease extending the kernel and sharing of code
between drivers.

First steps: Make the signature of ifioctl_common() match struct
ifinet->if_ioctl. Convert SIOCSIFCAP and SIOCSIFMTU to the new
ifioctl() regime, throughout the kernel.
 1.120  04-Jan-2008  ad Start detangling lock.h from intr.h. This is likely to cause short term
breakage, but the mess of dependencies has been regularly breaking the
build recently anyhow.
 1.119  19-Oct-2007  ad branches: 1.119.2; 1.119.8;
machine/{bus,cpu,intr}.h -> sys/{bus,cpu,intr}.h
 1.118  08-Oct-2007  ad branches: 1.118.2;
Use the softint API.
 1.117  01-Sep-2007  dyoung branches: 1.117.2;
Use ifreq_setaddr(), ifreq_getaddr(), sockaddr_in_init(), and
sockaddr_copy(). Constify. Compare pointers with NULL, not 0.
Don't "test truth" of pointers, but compare with NULL.
 1.116  14-Jul-2007  ad branches: 1.116.2; 1.116.6; 1.116.8;
Generic soft interrupts are mandatory.
 1.115  09-Jul-2007  ad Merge some of the less invasive changes from the vmlocking branch:

- kthread, callout, devsw API changes
- select()/poll() improvements
- miscellaneous MT safety improvements
 1.114  07-Mar-2007  liamjfoy branches: 1.114.2; 1.114.4;
Add IPv6 Fast Forward - the IPv4 counterpart:

If ip6_forward successfully forwards a packet, a cache, in this case a
ip6flow struct entry, will be created. ether_input and friends will
then be able to call ip6flow_fastforward with the packet which will then
be passed to if_output (unless an issue is found - in that case the packet
is passed back to ip6_input).

ok matt@ christos@ dyoung@ and joerg@
 1.113  04-Mar-2007  christos Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.112  17-Feb-2007  dyoung KNF: de-__P, bzero -> memset, bcmp -> memcmp. Remove extraneous
parentheses in return statements.

Cosmetic: don't open-code TAILQ_FOREACH().

Cosmetic: change types of variables to avoid oodles of casts: in
in6_src.c, avoid casts by changing several route_in6 pointers
to struct route pointers. Remove unnecessary casts to caddr_t
elsewhere.

Pave the way for eliminating address family-specific route caches:
soon, struct route will not embed a sockaddr, but it will hold
a reference to an external sockaddr, instead. We will set the
destination sockaddr using rtcache_setdst(). (I created a stub
for it, but it isn't used anywhere, yet.) rtcache_free() will
free the sockaddr. I have extracted from rtcache_free() a helper
subroutine, rtcache_clear(). rtcache_clear() will "forget" a
cached route, but it will not forget the destination by releasing
the sockaddr. I use rtcache_clear() instead of rtcache_free()
in rtcache_update(), because rtcache_update() is not supposed
to forget the destination.

Constify:

1 Introduce const accessor for route->ro_dst, rtcache_getdst().

2 Constify the 'dst' argument to ifnet->if_output(). This
led me to constify a lot of code called by output routines.

3 Constify the sockaddr argument to protosw->pr_ctlinput. This
led me to constify a lot of code called by ctlinput routines.

4 Introduce const macros for converting from a generic sockaddr
to family-specific sockaddrs, e.g., sockaddr_in: satocsin6,
satocsin, et cetera.
 1.111  16-Nov-2006  christos branches: 1.111.4;
__unused removal on arguments; approved by core.
 1.110  25-Oct-2006  elad Kill some KAUTH_GENERIC_ISSUSER uses.
 1.109  12-Oct-2006  christos - sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386
 1.108  23-Jul-2006  ad branches: 1.108.4; 1.108.6;
Use the LWP cached credentials where sane.
 1.107  07-Jun-2006  kardel merge FreeBSD timecounters from branch simonb-timecounters
- struct timeval time is gone
time.tv_sec -> time_second
- struct timeval mono_time is gone
mono_time.tv_sec -> time_uptime
- access to time via
{get,}{micro,nano,bin}time()
get* versions are fast but less precise
- support NTP nanokernel implementation (NTP API 4)
- further reading:
Timecounter Paper: http://phk.freebsd.dk/pubs/timecounter.pdf
NTP Nanokernel: http://www.eecis.udel.edu/~mills/ntp/html/kern.html
 1.106  14-May-2006  elad branches: 1.106.2;
integrate kauth.
 1.105  02-Jan-2006  yamt branches: 1.105.2; 1.105.4; 1.105.6; 1.105.8; 1.105.10;
ppp_dequeue: fix a mbuf leak/packet loss introduced by rev.1.104.
 1.104  28-Dec-2005  christos branches: 1.104.2;
PR/5901: Felix A. Croes: PPP fast queue blocks traffic at normal priority.
Applied fix, similar to the one suggested in the PR. We use a counter to
limit the number of consecutive packets accepted from the fast queue. This
number can be set via ioctl, but this has not been implemented. Since there
are only 2 queues other proposed solutions such as ALTQ are overkill and
they have not been implemented in the past 7 years. Now LCP echos can be
used to detect that the line is up.
 1.103  11-Dec-2005  thorpej ANSI function decls and application of static.
 1.102  27-Nov-2005  thorpej Overhaul how TTY line disciplines are handled:
- Replace references to linesw[0] with a ttyldisc_default() function
that returns the default ("termios") line discipline.
- The linesw[] array is gone, replaced by a linked list.
- ttyldisc_add() and ttyldisc_remove() have been replaced by
ttyldisc_attach() and ttyldisc_detach().
- Things that provide line disciplines are now responsible for
registering those disciplines with the system. The linesw
structures are no longer declared in tty_conf.c
- Line disciplines are now refcounted; a lookup causes a reference to
be held. ttyldisc_release() releases the reference. Attempts to
detach an in-use line discipline result in EBUSY.
- Fix function signature lossage in if_sl.c, if_strip.c, and tty_tb.c
that was masked by the old tty_conf.c
- tty_init() is no longer necessary; delete it and its call from main().
 1.101  29-May-2005  christos branches: 1.101.2; 1.101.8;
- sprinkle const
- remove unneeded casts
- use more mem*() instead of b*() funcs.
 1.100  17-May-2005  christos Yes, it was a cool trick >20 years ago to use "0123456789abcdef"[a] to
implement, xtoa(), but I think defining the samestring 50 times is a bit
too much. Defined HEXDIGITS and hexdigits in subr_prf.c and use it...
 1.99  31-Mar-2005  christos no point in assigning to ifq twice.
 1.98  31-Mar-2005  explorer Fix error with ifq not being set before use. Explicitly set it to NULL just before it may be set to the fastq, since if this becomes a loop (and in one case already is) this will always work. ifq_enqueue2() is designed to handle this case.
 1.97  31-Mar-2005  christos factor out the interface queueing code into two functions. One used by
the non point-to-point interfaces that has one queue, and one used by
the point to point interfaces that has two queues. No functional changes.
XXX: The ALTQ stuff makes the code ugly.
XXX: More cleanup to come
 1.96  26-Feb-2005  perry nuke trailing whitespace
 1.95  05-Dec-2004  christos branches: 1.95.4; 1.95.6;
pasto: simple_lock -> simple_unlock.
 1.94  05-Dec-2004  peter Don't forget to call bpfdetach in the clone destroy function.
While here, add a missing static and change some spaces to tabs.
 1.93  05-Dec-2004  he Fix an obvious typo: scf -> sc. Discovered while compiling for x68k.
 1.92  05-Dec-2004  christos void in arg prototype.
 1.91  05-Dec-2004  christos Make ppp a cloning device. Based on the work of Quentin Garnier.
 1.90  03-Jul-2004  dyoung I changed pppoutput to use M_PREPEND. pppoutput was duplicating
the functionality of M_PREPEND, but with a bug: m_pkthdr.len was
not updated in pppoutput as it is in M_PREPEND.

Also, replace the loop that measures the length of the mbuf chain
with a call to m_length.

This fixes a PR from an anonymous bug reporter. Thank you, anonymous
bug reporter. Thanks, Itojun, for bringing the anonymous bug report
to my attention.
 1.89  21-Apr-2004  itojun kill sprintf, use snprintf
 1.88  28-Oct-2003  mycroft Also, if we're going to bail, we should free the memory we just allocated...
 1.87  28-Oct-2003  mycroft Previous patch created a dead break.
 1.86  25-Oct-2003  christos Fix uninitialized variable warnings
 1.85  01-Sep-2003  christos Add a new ioctl PPPIOCGRAWIN to get the last characters we got from the
remote site.
 1.84  02-May-2003  itojun branches: 1.84.2;
KNF
 1.83  27-Mar-2003  christos PR/20844: Iain Hibbert: PPP Compressors cannot be loaded as LKM
 1.82  19-Jan-2003  simonb Remove variable that is only assigned too but not referenced.
 1.81  02-Oct-2002  itojun backout previous two - if you use ppp* interface, kernel panics instantly.
it is apparent that the change was untested, and severety is high.
 1.80  25-Sep-2002  augustss Remove unused variable so the file compiles again.
 1.79  25-Sep-2002  darrenr Keep m_pkthdr.len updated correctly and use it rather than a loop to find
out the total length of the packet.
 1.78  01-Jul-2002  itojun new copyright boilerplate from CMU. from openbsd
 1.77  12-May-2002  matt branches: 1.77.2;
Make ppp_softc[] extern and declare in if_ppp.c
 1.76  17-Mar-2002  atatat Convert ioctl code to use EPASSTHROUGH instead of -1 or ENOTTY for
indicating an unhandled "command". ERESTART is -1, which can lead to
confusion. ERESTART has been moved to -3 and EPASSTHROUGH has been
placed at -4. No ioctl code should now return -1 anywhere. The
ioctl() system call is now properly restartable.
 1.75  05-Mar-2002  itojun bring in latest ALTQ from kjc. ALTQify some of the drivers.
 1.74  14-Jan-2002  kleink Include <machine/intr.h> unconditionally, instead of only doing so if
__HAVE_GENERIC_SOFT_INTERRUPTS and relying on <sys/param.h> to provide it
otherwise; pointed out by Aymeric Vincent.
 1.73  13-Nov-2001  lukem remove unnecessary #if NFOO > 0 .... #endif wrappers
 1.72  12-Nov-2001  lukem add RCSIDs
 1.71  05-Aug-2001  jdolecek use unsigned variable types as appropriate
 1.70  18-Jul-2001  thorpej bzero -> memset
 1.69  14-Jun-2001  itojun branches: 1.69.2;
change the meaning of ifnet.if_lastchange to meet RFC1573 ifLastChange.
follows BSD/OS practice and ucd-snmp code (FreeBSD does it for specific
interfaces only).

was: if_lastchange get updated on every packet transmission/receipt.
now: if_lastchange get updated when IFF_UP is changed.
 1.68  13-Apr-2001  thorpej Remove the use of splimp() from the NetBSD kernel. splnet()
and only splnet() is allowed for the protection of data structures
used by network devices.
 1.67  17-Jan-2001  thorpej branches: 1.67.2;
Fix a rather annoying problem where the sockaddr_dl which holds
the link level name for the interface (ifp->if_sadl) is allocated
before ifp->if_addrlen is initialized, which could lead to allocating
too little space for the link level address.

Do this by splitting allocation of the link level name out of
if_attach() and into if_alloc_sadl(), which is normally called
by functions like ether_ifattach(). Network interfaces which
don't have a link-specific attach routine must call if_alloc_sadl()
themselves (example: gif).

Link level names are freed by if_free_sadl(), which can be called
from e.g. ether_ifdetach(). Drivers never need call if_free_sadl()
themselves as if_detach() will do it if it is not already done.

While here, add the ability to pass an AF_LINK address to
SIOCSIFADDR in ether_ioctl() (this is what caused me to notice
the problem that the above fixes).
 1.66  15-Jan-2001  thorpej For SLIP/STRIP/PPP, use generic soft interrupts, if available.
 1.65  18-Dec-2000  thorpej Fill in if_dlt.
 1.64  18-Dec-2000  thorpej Add ALTQ support.
 1.63  12-Dec-2000  thorpej Adapt to bpfattach() changes, and further centralize the bpfattach()
and bpfdetach() calls into link-type subroutines where possible.
 1.62  26-Oct-2000  wiz Fix typo (thinko?), which didn't allow MRU to be set below the default
value (instead of the minimum value). Patch supplied by Stephen Degler
in PR #9945, and reviewed by Ignatios Souvatzis.
 1.61  06-Oct-2000  onoe unique #include opt_inet.h
 1.60  04-Oct-2000  itojun need opt_inet.h for #ifdef INET
 1.59  02-Oct-2000  itojun enable VJC only with INET
 1.58  30-Mar-2000  augustss branches: 1.58.4;
Kill some more register declarations.
 1.57  23-Mar-2000  thorpej New callout mechanism with two major improvements over the old
timeout()/untimeout() API:
- Clients supply callout handle storage, thus eliminating problems of
resource allocation.
- Insertion and removal of callouts is constant time, important as
this facility is used quite a lot in the kernel.

The old timeout()/untimeout() API has been removed from the kernel.
 1.56  27-Nov-1999  hannken Fix typo introduced in rev. 1.55.
It caused IP6 packets to be sent as AF_UNSPEC instead of AF_INET6.
 1.55  30-Jul-1999  itojun branches: 1.55.2; 1.55.8;
remove reference to in6_systm.h (file itself will be removed afterwords)
 1.54  01-Jul-1999  itojun IPv6 kernel code, based on KAME/NetBSD 1.4, SNAP kit 19990628.
(Sorry for a big commit, I can't separate this into several pieces...)
Pls check sys/netinet6/TODO and sys/netinet6/IMPLEMENTATION for details.

- sys/kern: do not assume single mbuf, accept chained mbuf on passing
data from userland to kernel (or other way round).
- "midway" ATM card: ATM PVC pseudo device support, like those done in ALTQ
package (ftp://ftp.csl.sony.co.jp/pub/kjc/).
- sys/netinet/tcp*: IPv4/v6 dual stack tcp support.
- sys/netinet/{ip6,icmp6}.h, sys/net/pfkeyv2.h: IETF document assumes those
file to be there so we patch it up.
- sys/netinet: IPsec additions are here and there.
- sys/netinet6/*: most of IPv6 code sits here.
- sys/netkey: IPsec key management code
- dev/pci/pcidevs: regen

In my understanding no code here is subject to export control so it
should be safe.
 1.53  14-May-1999  tron Fix compilation problem caused by recent changes to filtering code.
 1.52  12-May-1999  thorpej Decouple inbound and outbound filters. Now instead of using "active-filter"
and "pass-filter" and "inbound" and "outbound" qualifiers in the filter
expression, use new "active-filter-in", "active-filter-out", "pass-filter-in",
and "pass-filter-out" without these qualifiers.

This is necessary due to the horrible, awful way "inbound" and "outbound"
were specified for the filter programs when a packet was passed through them.
Basically, the "address" byte in the serial PPP header was overwritten with
a value to indicate the direction. However, the "address" byte doesn't even
exist on PPP headers for all other PPP encaps! So, this old method worked
only for serial encaps, and corrupted packets for all others (PPPoE, ATM, etc.)
 1.51  11-May-1999  thorpej * Start out with a data link type of DLT_NULL. When we change an interface
to serial encap, change its data link type to DLT_PPP_SERIAL.
* Work around some serious bogosity in the filtering code which utterly
breaks proper functioning of BPF. The PPP code and pppd(8) WILL be changed
to fix this.
 1.50  09-Jan-1999  thorpej branches: 1.50.4; 1.50.6;
Use M_LINK{0,1} for our own mbuf flags, rather than arbitrarily picking
2 bits.
 1.49  10-Dec-1998  christos Revert IPX changes that I committed accidentally.
 1.48  10-Dec-1998  christos defopt
 1.47  03-Sep-1998  christos branches: 1.47.4;
PR/5414: Ronald Khoo: tcpdump ppp does not respect inbound/outbound qualifiers.
 1.46  02-Aug-1998  sommerfe Fix PR5898: ppp delays last packet.
 1.45  09-Jul-1998  thorpej Glue in fast forwarding.
 1.44  08-Jul-1998  sommerfe Only run pppasyncstart (sc->sc_start) from the netisr handler.
This allows pppoutput to be called from splimp (e.g., when ipflow is
in use.) without requiring pppasyncstart to run at splimp.
This is believed to fix PR5624.
 1.43  06-Jul-1998  jtk use #ifdef INET so this compiles again
 1.42  05-Jul-1998  jonathan defopt INET, NETATALK.
 1.41  02-May-1998  christos Merge changes from pppd-2.3.4; adds ppp-deflate-draft stuff and updates
zlib. Maybe we can merge our other copy of zlib with this one now and
avoid having two copies?
 1.40  16-Jun-1997  christos From Paul Mackerras: use sl_compress_setup, not sl_compress_init
 1.39  17-May-1997  christos Update to ppp-2.3b5
 1.38  16-Apr-1997  is Made pppoutput() public again on behalf of Martin Husemann (PR 3455).
Apparently, the BISDN package uses this function.
 1.37  12-Mar-1997  christos Update to ppp-2.3b4; from Paul Mackerras
 1.36  04-Mar-1997  mycroft Use splimp() to block interrupts, not splhigh().
 1.35  13-Oct-1996  christos branches: 1.35.4;
backout previous kprintf change
 1.34  10-Oct-1996  christos - printf -> kprintf, sprintf -> ksprintf
 1.33  13-Jun-1996  cgd no need for a local implementation of SIOCGIFMTU; delete it.
 1.32  22-May-1996  mycroft Pass a proc pointer down to the usrreq and pcbbind functions for PRU_ATTACH, PRU_BIND and
PRU_CONTROL. The usrreq interface really needs to be split up, but this will have to wait.
Remove SS_PRIV completely.
 1.31  07-May-1996  thorpej branches: 1.31.4;
Changed struct ifnet to have a pointer to the softc of the underlying
device and a printable "external name" (name + unit number), thus eliminating
if_name and if_unit. Updated interface to (*if_watchdog)() and (*if_reset)()
to take a struct ifnet *, rather than a unit number.
 1.30  19-Mar-1996  paulus Make inclusion of the PPP BSD-Compress and Deflate compressors
dependent on the PPP_BSDCOMP and PPP_DEFLATE kernel configuration
options, respectively.
 1.29  15-Mar-1996  paulus Added packet filtering, support for "PPP Deflate" packet compression,
trivial multicast support, and support for xon/xoff output flow
control to the PPP subsystem. Fixed several bugs, including making
the accumulation and resetting of statistics more consistent. State
for the VJ compressor is now dynamically allocated.
 1.28  13-Feb-1996  christos Net prototypes
 1.27  07-Feb-1996  pk wrt. previous change: can't compute `ilen' that early; just do computation
separately when logging.
Notes: consider using mbuf pkthdr length field in PPP code.
condider doing packet log after de-compression.
 1.26  07-Feb-1996  pk Init variable before use (PRs 1646 & 2042).
 1.25  27-Dec-1995  mycroft Remove old workaround for a bug.
 1.24  05-Oct-1995  mycroft Add some missing statistics. From Thorsten Lockert.
 1.23  12-Aug-1995  mycroft splnet --> splsoftnet
 1.22  04-Jul-1995  paulus Latest version of PPP stuff, with packet compression and other
improvements. The PPP kernel code is now split into if_ppp.c,
containing generic PPP support, and ppp_tty.c, which specifically
supports PPP on async tty devices (as a line discipline). This is
so that other devices can be supported without making them look
like ttys.
 1.21  08-Mar-1995  cgd fixed sized types, where appropriate. when casting pointers to
integers to do math on them, cast to long. ioctl commands are
u_longs.
 1.20  30-Oct-1994  cgd be more careful with types, also pull in headers where necessary.
 1.19  27-Jul-1994  deraadt bug 367. paulus says the fix is right & critical.
 1.18  20-Jul-1994  paulus The ppp interface now retries the mbuf allocation when it receives
a character and it doesn't already have enough space allocated.
It still needs cluster mbufs to be able to decompress VJ-compressed
packets. It drops packets if it can't allocate mbufs rather than
taking the interface down.
 1.17  20-Jul-1994  paulus Due to popular revulsion, the ppp interface now drops packets if
 1.16  18-Jul-1994  paulus If we can't get mbuf clusters, take the ppp interface down instead
of writing beyond the end of ordinary mbufs.
 1.15  03-Jul-1994  deraadt branches: 1.15.2;
bug #319. fix from <alasdair@wildcat.demon.co.uk>
 1.14  29-Jun-1994  cgd New RCS ID's, take two. they're more aesthecially pleasant, and use 'NetBSD'
 1.13  20-Jun-1994  paulus Some restructuring of the PPP packet input procedure to make it easier
to implement PPP over sync lines and PPP compression protocols.
 1.12  14-Jun-1994  paulus some minor splx-type bug fixes from christos@deshaw.com.
 1.11  29-May-1994  paulus check for escaped char before checking for escape char
so if peer escapes 0x5d we interpret it correctly
 1.10  24-May-1994  cgd MIN -> min, MAX -> max
 1.9  13-May-1994  mycroft Update to 4.4-Lite networking code, with a few local changes.
 1.8  08-May-1994  paulus Version from ppp-2.1 release;
this version has been restructured to make more of the code usable
with sync serial drivers
 1.7  25-Jan-1994  deraadt PPP_HEADER_LEN -> PPP_HDRLEN
 1.6  23-Dec-1993  cgd include <machine/cpu.h> rather than <machine/mtpr.h> -- if the latter
exists at all, it's supposed to be included by <machine/cpu.h>
 1.5  18-Dec-1993  mycroft Canonicalize all #includes.
 1.4  04-Nov-1993  paulus Removed test (CCOUNT(&sc->sc_ttyp->t_outq) == 0) for whether
to call pppstart or not: now we call pppstart for every packet,
which should aid recovery from lost transmitter interrupts.
Also a fix for 386BSD/FreeBSD which doesn't affect NetBSD.
 1.3  02-Sep-1993  paulus branches: 1.3.2;
Fixed bug in if_ppp.c so that received IP packets are passed correctly to BPF.
 1.2  31-Aug-1993  paulus Modified if_ppp.c and if_ppp.h to add priority queueing for "interactive"
traffic (done in a similar fashion to if_sl.c), and BPF support.
 1.1  14-Aug-1993  deraadt ppp from paul mackerras
 1.3.2.4  14-Nov-1993  mycroft Canonicalize all #includes.
 1.3.2.3  27-Oct-1993  mycroft Call pppstart() redundantly.
 1.3.2.2  16-Oct-1993  mycroft Nuke references to machine/mtpr.h.
 1.3.2.1  24-Sep-1993  mycroft Make all files using spl*() #include cpu.h. Changes from trunk.
 1.15.2.2  28-Jul-1994  cgd from trunk
 1.15.2.1  20-Jul-1994  cgd update from trunk, to fix serious ppp lossage.
 1.31.4.1  11-Dec-1996  mycroft From trunk:
Eliminate SS_PRIV; instead, pass down a proc pointer to the usrreq methods
that need it.
Fix numerous memory leaks and bogus return values.
 1.35.4.1  12-Mar-1997  is Merge in changes from The Trunk
 1.47.4.1  11-Dec-1998  kenh The beginnings of interface detach support. Still some bugs, but mostly
works for me.

This work was originally by Bill Studenmund, and cleaned up by me.
 1.50.6.2  30-Nov-1999  itojun bring in latest KAME (as of 19991130, KAME/NetBSD141) into kame branch
just for reference purposes.
This commit includes 1.4 -> 1.4.1 sync for kame branch.

The branch does not compile at all (due to the lack of ALTQ and some other
source code). Please do not try to modify the branch, this is just for
referenre purposes.

synchronization to latest KAME will take place on HEAD branch soon.
 1.50.6.1  28-Jun-1999  itojun KAME/NetBSD 1.4 SNAP kit, dated 19990628.

NOTE: this branch (kame) is used just for refernce. this may not compile
due to multiple reasons.
 1.50.4.3  02-Aug-1999  thorpej Update from trunk.
 1.50.4.2  01-Jul-1999  thorpej Sync w/ -current.
 1.50.4.1  21-Jun-1999  thorpej Sync w/ -current.
 1.55.8.1  27-Dec-1999  wrstuden Pull up to last week's -current.
 1.55.2.6  21-Apr-2001  bouyer Sync with HEAD
 1.55.2.5  18-Jan-2001  bouyer Sync with head (for UBC+NFS fixes, mostly).
 1.55.2.4  05-Jan-2001  bouyer Sync with HEAD
 1.55.2.3  13-Dec-2000  bouyer Sync with HEAD (for UBC fixes).
 1.55.2.2  22-Nov-2000  bouyer Sync with HEAD.
 1.55.2.1  20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
 1.58.4.1  16-Aug-2001  tv Pullup [jdolecek]:

sys/arch/amiga/dev/grf_cl.c 1.26
sys/arch/amiga/dev/grfioctl.h 1.14
sys/arch/hpcmips/dev/plumvideo.c 1.20
sys/arch/macppc/dev/ofb.c 1.25
sys/arch/sparc/dev/cgtwo.c 1.35
sys/arch/sparc/include/fbio.h patch
sys/arch/sparc64/include/fbio.h patch
sys/arch/sun3/dev/cg2.c 1.14
sys/arch/sun3/include/fbio.h patch
sys/dev/pci/tga.c 1.35
sys/dev/tc/cfb.c 1.28
sys/dev/tc/mfb.c 1.27
sys/dev/tc/sfb.c 1.46
sys/dev/tc/sfbplus.c 1.10 via patch
sys/dev/tc/tfb.c 1.30
sys/dev/tc/xcfb.c 1.23
sys/net/if_ppp.c 1.71

Use unsigned variable types to make bounds checking more correct.
 1.67.2.10  01-Aug-2002  nathanw Catch up to -current.
 1.67.2.9  12-Jul-2002  nathanw No longer need to pull in lwp.h; proc.h pulls it in for us.
 1.67.2.8  24-Jun-2002  nathanw Curproc->curlwp renaming.

Change uses of "curproc->l_proc" back to "curproc", which is more like the
original use. Bare uses of "curproc" are now "curlwp".

"curproc" is now #defined in proc.h as ((curlwp) ? (curlwp)->l_proc) : NULL)
so that it is always safe to reference curproc (*de*referencing curproc
is another story, but that's always been true).
 1.67.2.7  20-Jun-2002  nathanw Catch up to -current.
 1.67.2.6  01-Apr-2002  nathanw Catch up to -current.
(CVS: It's not just a program. It's an adventure!)
 1.67.2.5  28-Feb-2002  nathanw Catch up to -current.
 1.67.2.4  14-Nov-2001  nathanw Catch up to -current.
 1.67.2.3  24-Aug-2001  nathanw Catch up with -current.
 1.67.2.2  21-Jun-2001  nathanw Catch up to -current.
 1.67.2.1  05-Mar-2001  nathanw Initial commit of scheduler activations and lightweight process support.
 1.69.2.8  10-Oct-2002  jdolecek sync kqueue with -current; this includes merge of gehenna-devsw branch,
merge of i386 MP branch, and part of autoconf rototil work
 1.69.2.7  06-Sep-2002  jdolecek sync kqueue branch with HEAD
 1.69.2.6  23-Jun-2002  jdolecek catch up with -current on kqueue branch
 1.69.2.5  16-Mar-2002  jdolecek Catch up with -current.
 1.69.2.4  11-Feb-2002  jdolecek Sync w/ -current.
 1.69.2.3  10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.69.2.2  25-Aug-2001  thorpej Merge Aug 24 -current into the kqueue branch.
 1.69.2.1  03-Aug-2001  lukem update to -current
 1.77.2.1  15-Jul-2002  gehenna catch up with -current.
 1.84.2.8  11-Dec-2005  christos Sync with head.
 1.84.2.7  10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.84.2.6  01-Apr-2005  skrll Sync with HEAD.
 1.84.2.5  04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.84.2.4  18-Dec-2004  skrll Sync with HEAD.
 1.84.2.3  21-Sep-2004  skrll Fix the sync with head I botched.
 1.84.2.2  18-Sep-2004  skrll Sync with HEAD.
 1.84.2.1  03-Aug-2004  skrll Sync with HEAD
 1.95.6.1  19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.95.4.1  29-Apr-2005  kent sync with -current
 1.101.8.1  29-Nov-2005  yamt sync with head.
 1.101.2.7  11-Feb-2008  yamt sync with head.
 1.101.2.6  21-Jan-2008  yamt sync with head
 1.101.2.5  27-Oct-2007  yamt sync with head.
 1.101.2.4  03-Sep-2007  yamt sync with head.
 1.101.2.3  26-Feb-2007  yamt sync with head.
 1.101.2.2  30-Dec-2006  yamt sync with head.
 1.101.2.1  21-Jun-2006  yamt sync with head.
 1.104.2.1  15-Jan-2006  yamt sync with head.
 1.105.10.1  24-May-2006  tron Merge 2006-05-24 NetBSD-current into the "peter-altq" branch.
 1.105.8.3  06-May-2006  christos - Move kauth_cred_t declaration to <sys/types.h>
- Cleanup struct ucred; forward declarations that are unused.
- Don't include <sys/kauth.h> in any header, but include it in the c files
that need it.

Approved by core.
 1.105.8.2  10-Mar-2006  elad generic_authorize() -> kauth_authorize_generic().
 1.105.8.1  08-Mar-2006  elad Adapt to kernel authorization KPI.
 1.105.6.3  11-Aug-2006  yamt sync with head
 1.105.6.2  26-Jun-2006  yamt sync with head.
 1.105.6.1  24-May-2006  yamt sync with head.
 1.105.4.2  01-Jun-2006  kardel Sync with head.
 1.105.4.1  04-Feb-2006  simonb Adapt for timecounters: mostly use get*time(), use bintime's for timeout
calculations and use "time_second" instead of "time.tv_sec".
 1.105.2.1  09-Sep-2006  rpaulo sync with head
 1.106.2.1  19-Jun-2006  chap Sync with head.
 1.108.6.2  10-Dec-2006  yamt sync with head.
 1.108.6.1  22-Oct-2006  yamt sync with head
 1.108.4.1  18-Nov-2006  ad Sync with head.
 1.111.4.2  12-Mar-2007  rmind Sync with HEAD.
 1.111.4.1  27-Feb-2007  yamt - sync with head.
- move sched_changepri back to kern_synch.c as it doesn't know PPQ anymore.
 1.114.4.1  11-Jul-2007  mjf Sync with head.
 1.114.2.6  23-Oct-2007  ad Sync with head.
 1.114.2.5  09-Oct-2007  ad Sync with head.
 1.114.2.4  15-Jul-2007  ad Sync with head.
 1.114.2.3  15-Jul-2007  ad Sync with head.
 1.114.2.2  01-Jul-2007  ad Adapt to callout API change.
 1.114.2.1  17-Jun-2007  ad - Increase the number of thread priorities from 128 to 256. How the space
is set up is to be revisited.
- Implement soft interrupts as kernel threads. A generic implementation
is provided, with hooks for fast-path MD code that can run the interrupt
threads over the top of other threads executing in the kernel.
- Split vnode::v_flag into three fields, depending on how the flag is
locked (by the interlock, by the vnode lock, by the file system).
- Miscellaneous locking fixes and improvements.
 1.116.8.3  23-Mar-2008  matt sync with HEAD
 1.116.8.2  09-Jan-2008  matt sync with HEAD
 1.116.8.1  06-Nov-2007  matt sync with HEAD
 1.116.6.2  26-Oct-2007  joerg Sync with HEAD.

Follow the merge of pmap.c on i386 and amd64 and move
pmap_init_tmp_pgtbl into arch/x86/x86/pmap.c. Modify the ACPI wakeup
code to restore CR4 before jumping back into kernel space as the large
page option might cover that.
 1.116.6.1  03-Sep-2007  jmcneill Sync with HEAD.
 1.116.2.1  03-Sep-2007  skrll Sync with HEAD.
 1.117.2.1  14-Oct-2007  yamt sync with head.
 1.118.2.1  25-Oct-2007  bouyer Sync with HEAD.
 1.119.8.1  08-Jan-2008  bouyer Sync with HEAD
 1.119.2.1  18-Feb-2008  mjf Sync with HEAD.
 1.121.8.2  17-Jun-2008  yamt sync with head.
 1.121.8.1  18-May-2008  yamt sync with head.
 1.121.6.3  17-Jan-2009  mjf Sync with HEAD.
 1.121.6.2  29-Jun-2008  mjf Sync with HEAD.
 1.121.6.1  02-Jun-2008  mjf Sync with HEAD.
 1.122.6.1  18-Jun-2008  simonb Sync with head.
 1.122.4.1  23-Jun-2008  wrstuden Sync w/ -current. 34 merge conflicts to follow.
 1.122.2.4  09-Oct-2010  yamt sync with head
 1.122.2.3  11-Aug-2010  yamt sync with head.
 1.122.2.2  11-Mar-2010  yamt sync with head
 1.122.2.1  04-May-2009  yamt sync with head.
 1.123.4.3  28-Apr-2009  skrll Sync with HEAD.
 1.123.4.2  03-Mar-2009  skrll Sync with HEAD.
 1.123.4.1  19-Jan-2009  skrll Sync with HEAD.
 1.123.2.1  13-Dec-2008  haad Update haad-dm branch to haad-dm-base2.
 1.128.2.1  13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.130.4.3  21-Apr-2011  rmind sync with head
 1.130.4.2  05-Mar-2011  rmind sync with head
 1.130.4.1  30-May-2010  rmind sync with head
 1.130.2.2  22-Oct-2010  uebayasi Sync with HEAD (-D20101022).
 1.130.2.1  30-Apr-2010  uebayasi Sync with HEAD.
 1.132.2.1  06-Jun-2011  jruoho Sync with HEAD.
 1.136.12.4  03-Dec-2017  jdolecek update from HEAD
 1.136.12.3  20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.136.12.2  25-Feb-2013  tls resync with head
 1.136.12.1  20-Nov-2012  tls Resync to 2012-11-19 00:00:00 UTC
 1.136.8.1  31-Oct-2012  riz Pull up following revision(s) (requested by christos in ticket #638):
sys/net/if_ppp.c: revision 1.137
sys/netinet6/ip6_flow.c: revision 1.20
sys/net/if_fddisubr.c: revision 1.82
sys/net/if_ethersubr.c: revision 1.192
sys/netinet6/in6_var.h: revision 1.66
sys/net/if_atmsubr.c: revision 1.50
PR/47058: Antti Kantee: If the ipv6 flow code modifies the mbuf, pass the
change up to the caller.
 1.136.2.3  22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.136.2.2  16-Jan-2013  yamt sync with (a bit old) head
 1.136.2.1  30-Oct-2012  yamt sync with head
 1.138.2.1  18-May-2014  rmind sync with head
 1.141.2.1  10-Aug-2014  tls Rebase.
 1.146.4.6  05-Oct-2016  skrll Sync with HEAD
 1.146.4.5  09-Jul-2016  skrll Sync with HEAD
 1.146.4.4  29-May-2016  skrll Sync with HEAD
 1.146.4.3  22-Apr-2016  skrll Sync with HEAD
 1.146.4.2  22-Sep-2015  skrll Sync with HEAD
 1.146.4.1  06-Jun-2015  skrll Sync with HEAD
 1.152.2.1  04-Nov-2016  pgoyette Sync with HEAD
 1.158.8.2  11-Jan-2019  martin Pull up following revision(s) (requested by knakahara in ticket #1162):

sys/net/if_ppp.c: revision 1.162
sys/net/if_ppp.c: revision 1.163

Fix missing mutex_exit in ppp_create().

Fix missing splx in ppp_inproc().
 1.158.8.1  26-Jul-2018  snj Pull up following revision(s) (requested by msaitoh in ticket #938):
sys/arch/acorn32/podulebus/if_ie.c: revision 1.41
sys/arch/amiga/dev/if_es.c: revision 1.58
sys/arch/amiga/dev/if_qn.c: revision 1.45
sys/arch/arm/at91/at91emac.c: revision 1.20
sys/arch/arm/ep93xx/epe.c: revision 1.37
sys/arch/emips/ebus/if_le_ebus.c: revision 1.14
sys/arch/emips/ebus/if_le_ebus.c: revision 1.15
sys/arch/mac68k/dev/if_mc.c: revision 1.46
sys/arch/macppc/dev/am79c950.c: revision 1.39
sys/arch/newsmips/apbus/if_sn.c: revision 1.40
sys/arch/next68k/dev/mb8795.c: revision 1.59
sys/arch/playstation2/dev/if_smap.c: revision 1.25
sys/arch/playstation2/dev/if_smap.c: revision 1.26
sys/arch/sun2/dev/if_ec.c: revision 1.28
sys/arch/sun3/dev/if_ie.c: revision 1.63
sys/arch/x68k/dev/if_ne_intio.c: revision 1.19
sys/arch/xen/xen/if_xennet_xenbus.c: revision 1.75
sys/arch/xen/xen/xennetback_xenbus.c: revision 1.63
sys/dev/bi/if_ni.c: revision 1.45
sys/dev/cadence/if_cemac.c: revision 1.12
sys/dev/ic/am7990.c: revision 1.78
sys/dev/ic/am79900.c: revision 1.27
sys/dev/ic/an.c: revision 1.67
sys/dev/ic/cs89x0.c: revision 1.40
sys/dev/ic/dm9000.c: revision 1.13
sys/dev/ic/dm9000.c: revision 1.14
sys/dev/ic/dp8390.c: revision 1.88
sys/dev/ic/elink3.c: revision 1.141
sys/dev/ic/elinkxl.c: revision 1.122
sys/dev/ic/hme.c: revision 1.98
sys/dev/ic/i82586.c: revision 1.77
sys/dev/ic/lance.c: revision 1.53
sys/dev/ic/mb86950.c: revision 1.27
sys/dev/ic/mb86960.c: revision 1.86
sys/dev/ic/mtd803.c: revision 1.34
sys/dev/ic/pdq_ifsubr.c: revision 1.59
sys/dev/ic/rrunner.c: revision 1.86
sys/dev/ic/seeq8005.c: revision 1.58
sys/dev/ic/sgec.c: revision 1.47
sys/dev/ic/smc90cx6.c: revision 1.72
sys/dev/ic/smc91cxx.c: revision 1.96
sys/dev/ic/tropic.c: revision 1.49
sys/dev/ic/wi.c: revision 1.245
sys/dev/isa/if_eg.c: revision 1.93
sys/dev/isa/if_el.c: revision 1.95
sys/dev/isa/if_iy.c: revision 1.101
sys/dev/ofw/ofnet.c: revision 1.58
sys/dev/pci/if_alc.c: revision 1.27
sys/dev/pci/if_de.c: revision 1.152
sys/dev/pci/if_fpa.c: revision 1.61
sys/dev/pci/if_jme.c: revision 1.34
sys/dev/pci/if_tl.c: revision 1.108
sys/dev/pci/if_vte.c: revision 1.19
sys/dev/pci/ixgbe/ixgbe.h: revision 1.50
sys/dev/pcmcia/if_cnw.c: revision 1.62
sys/dev/pcmcia/if_malo_pcmcia.c: revision 1.17
sys/dev/pcmcia/if_ray.c: revision 1.89
sys/dev/pcmcia/if_xi.c: revision 1.81
sys/dev/pcmcia/mhzc.c: revision 1.51
sys/dev/pcmcia/xirc.c: revision 1.34
sys/dev/qbus/if_de.c: revision 1.33
sys/dev/qbus/if_qe.c: revision 1.78
sys/dev/qbus/if_qt.c: revision 1.22
sys/dev/sbus/be.c: revision 1.87
sys/dev/sbus/qe.c: revision 1.68
sys/dev/scsipi/if_se.c: revision 1.96
sys/dev/usb/if_atu.c: revision 1.59
sys/net/if_l2tp.c: revision 1.28 via patch
sys/net/if_ppp.c: revision 1.160
It's not required to include net/bpfdesc.h. Remove it.
--
Simplify like other drivers. NULL check of ifp->if_bpf is done in
bpf_mtap(), so it's not required to do it here.
--
Remove duplicated inclusion of net/bpf.h.
--
Remove duplicated inclusion of net/bpf.h.
--
Simplify bpf_mtap() call. No functional change.
 1.159.2.4  26-Jan-2019  pgoyette Sync with HEAD
 1.159.2.3  18-Jan-2019  pgoyette Synch with HEAD
 1.159.2.2  28-Jul-2018  pgoyette Sync with HEAD
 1.159.2.1  25-Jun-2018  pgoyette Sync with HEAD
 1.161.2.3  13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.161.2.2  08-Apr-2020  martin Merge changes from current as of 20200406
 1.161.2.1  10-Jun-2019  christos Sync with HEAD
 1.166.2.1  29-Feb-2020  ad Sync with head.
 1.172.10.1  02-Aug-2025  perseant Sync with HEAD
 1.172.8.2  16-Nov-2023  thorpej IFQ_CLASSIFY() -> ifq_classify_packet().
 1.172.8.1  15-Nov-2023  thorpej Rename ifq_enqueue() -> if_enqueue(), ifq_enqueue2() -> if_enqueue2().

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