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History log of /src/sys/dev/pcmcia/if_xi.c
RevisionDateAuthorComments
 1.96  25-Sep-2022  thorpej Remove unnecessary include of <sys/malloc.h>.
 1.95  08-Apr-2022  andvar fix various typos, mainly in comments, but also log messages, docs, game text.
 1.94  02-Feb-2020  thorpej - Adopt <net/if_stats.h>.
- Use ifmedia_fini().
 1.93  06-Jan-2020  msaitoh branches: 1.93.2;
Protect ec_multicnt.
 1.92  28-Nov-2019  maxv localify
 1.91  30-Oct-2019  msaitoh ether_input() automatically add input bytes to if_ibytes, so it's not
required to do in the driver who use ether_input().
 1.90  28-May-2019  msaitoh branches: 1.90.2;
Use ETHER_LOCK()/ETHER_UNLOCK() for all ethernet drivers to protect ec_multi*.
 1.89  23-May-2019  msaitoh Whitespace fix (mainly tabify).
 1.88  23-May-2019  msaitoh No functional change:
- Simplify MII structure initialization and reference.
- u_int*_t -> uint*_t.
- KNF
 1.87  22-Apr-2019  msaitoh These drivers do ether_ioctl() on SIOC{ADD,DEL}MULTI, SIOC{G,S}IFMEDIA and
default case in the switch statement. Only the default case didn't check the
return value with ENETRESET. Integrate them to one ether_ioctl() with
ENETRESET test. This change might improve some other ioctl()s which return
ENETRESET by calling if_init().
 1.86  05-Feb-2019  msaitoh Remove very old IFF_NOTRAILERS flag.
 1.85  22-Jan-2019  msaitoh Change MII PHY read/write API from:

int (*mii_readreg_t)(device_t, int, int);
void (*mii_writereg_t)(device_t, int, int, int);
to:

int (*mii_readreg_t)(device_t, int, int, uint16_t *);
int (*mii_writereg_t)(device_t, int, int, uint16_t);

Now we can test if a read/write operation failed or not by the return value.

In 802.3 spec says that the PHY shall not respond to read/write transaction
to the unimplemented register(22.2.4.3). Detecting timeout can be used to
check whether a register is implemented or not (if the register conforms to
the spec). ukphy(4) can be used this for MII_MMDACR and MII_MMDAADR.

Note that I noticed that the following code do infinite loop in the
read/wirte function. If it accesses unimplemented PHY register, it will hang.
It should be fixed:

arm/at91/at91emac.c
arm/ep93xx/epe.c
arm/omap/omapl1x_emac.c
mips/ralink/ralink_eth.c
arch/powerpc/booke/dev/pq3etsec.c(read)
dev/cadence/if_cemac.c <- hkenken
dev/ic/lan9118.c


Tested with the following device:

axe+ukphy
axe+rgephy
axen+rgephy (tested by Andrius V)
wm+atphy
wm+ukphy
wm+igphy
wm+ihphy
wm+makphy
sk+makphy
sk+brgphy
sk+gentbi
msk+makphy
sip+icsphy
sip+ukphy
re+rgephy
bge+brgphy
bnx+brgphy
gsip+gphyter
rtk+rlphy
fxp+inphy (tested by Andrius V)
tlp+acphy
ex+exphy
epic+qsphy
vge+ciphy (tested by Andrius V)
vr+ukphy (tested by Andrius V)
vte+ukphy (tested by Andrius V)

Not tested (MAC):
arm:at91emac
arm:cemac
arm:epe
arm:geminigmac
arm:enet
arm:cpsw
arm:emac(omac)
arm:emac(sunxi)
arm:npe
evbppc:temac
macppc:bm
macppc:gm
mips:aumac
mips:ae
mips:cnmac
mips:reth
mips:sbmac
playstation2:smap
powerpc:tsec
powerpc:emac(ibm4xx)
sgimips:mec
sparc:be
sf
ne(ax88190, dl10019)
awge
ep
gem
hme
smsh
mtd
sm
age
alc
ale
bce
cas
et
jme
lii
nfe
pcn
ste
stge
tl
xi
aue
mue
smsc
udav
url

Not tested (PHY):
amhphy
bmtphy
dmphy
etphy
glxtphy
ikphy
iophy
lxtphy
nsphyter
pnaphy
rdcphy
sqphy
tlphy
tqphy
urlphy
 1.84  08-Jan-2019  msaitoh u_int{8,16,32}_t -> uint{8,16,32}_t. No functional change.
 1.83  03-Sep-2018  riastradh Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int. The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER! Some subsystems have

#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX. Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate. But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all. (Who knows, maybe in some cases integer
truncation is actually intended!)
 1.82  26-Jun-2018  msaitoh branches: 1.82.2;
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.
 1.81  22-Jun-2018  msaitoh It's not required to include net/bpfdesc.h. Remove it.
 1.80  15-Dec-2016  ozaki-r branches: 1.80.8; 1.80.14;
Move bpf_mtap and if_ipackets++ on Rx of each driver to percpuq if_input

The benefits of the change are:
- We can reduce codes
- We can provide the same behavior between drivers
- Where/When if_ipackets is counted up
- Note that some drivers still update packet statistics in their own
way (periodical update)
- Moved bpf_mtap run in softint
- This makes it easy to MP-ify bpf

Proposed on tech-kern and tech-net
 1.79  08-Dec-2016  ozaki-r Apply deferred if_start framework

if_schedule_deferred_start checks if the if_snd queue contains packets,
so drivers don't need to check it by themselves.
 1.78  02-Oct-2016  christos MFREE -> m_free
 1.77  10-Jun-2016  ozaki-r branches: 1.77.2;
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.
 1.76  09-Feb-2016  ozaki-r Introduce softint-based if_input

This change intends to run the whole network stack in softint context
(or normal LWP), not hardware interrupt context. Note that the work is
still incomplete by this change; to that end, we also have to softint-ify
if_link_state_change (and bpf) which can still run in hardware interrupt.

This change softint-ifies at ifp->if_input that is called from
each device driver (and ieee80211_input) to ensure Layer 2 runs
in softint (e.g., ether_input and bridge_input). To this end,
we provide a framework (called percpuq) that utlizes softint(9)
and percpu ifqueues. With this patch, rxintr of most drivers just
queues received packets and schedules a softint, and the softint
dequeues packets and does rest packet processing.

To minimize changes to each driver, percpuq is allocated in struct
ifnet for now and that is initialized by default (in if_attach).
We probably have to move percpuq to softc of each driver, but it's
future work. At this point, only wm(4) has percpuq in its softc
as a reference implementation.

Additional information including performance numbers can be found
in the thread at tech-kern@ and tech-net@:
http://mail-index.netbsd.org/tech-kern/2016/01/14/msg019997.html

Acknowledgment: riastradh@ greatly helped this work.
Thank you very much!
 1.75  25-May-2015  ozaki-r Remove leftover IPX-related stuffs

No objection on tech-kern and tech-net.
 1.74  10-Aug-2014  tls branches: 1.74.4;
Merge tls-earlyentropy branch into HEAD.
 1.73  22-Jul-2012  matt branches: 1.73.2; 1.73.12;
Fix mii_statchg to take a 'struct ifnet *' instead of device_t. This fixes
problem with a common MDIO bus used for multiple interfaces.
Some drivers converted to CFATTACL_DECL_NEW.
 1.72  02-Feb-2012  tls Entropy-pool implementation move and cleanup.

1) Move core entropy-pool code and source/sink/sample management code
to sys/kern from sys/dev.

2) Remove use of NRND as test for presence of entropy-pool code throughout
source tree.

3) Remove use of RND_ENABLED in device drivers as microoptimization to
avoid expensive operations on disabled entropy sources; make the
rnd_add calls do this directly so all callers benefit.

4) Fix bug in recent rnd_add_data()/rnd_add_uint32() changes that might
have lead to slight entropy overestimation for some sources.

5) Add new source types for environmental sensors, power sensors, VM
system events, and skew between clocks, with a sample implementation
for each.

ok releng to go in before the branch due to the difficulty of later
pullup (widespread #ifdef removal and moved files). Tested with release
builds on amd64 and evbarm and live testing on amd64.
 1.71  05-Apr-2010  joerg branches: 1.71.8; 1.71.12;
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.
 1.70  19-Jan-2010  pooka branches: 1.70.2; 1.70.4;
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.
 1.69  06-Dec-2009  dyoung device_t/softc split.
 1.68  13-Nov-2009  dyoung Don't use com_activate(), it's gone away. Thanks to Andreas Wrede
for pointing out that these drivers still used com_activate().

Use device_private(). Join some lines.

Remove superfluous activation hooks.

Add child-detachment hooks (not used, yet).

TBD: device_t/softc split.
 1.67  12-May-2009  cegger struct device * -> device_t, no functional changes intended.
 1.66  14-Mar-2009  dsl Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)
 1.65  07-Nov-2008  dyoung branches: 1.65.4;
*** 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.
 1.64  05-Apr-2008  cegger branches: 1.64.4; 1.64.10; 1.64.12;
use aprint_*_dev and device_xname
 1.63  19-Jan-2008  dyoung branches: 1.63.6;
Make many ethernet drivers share the common code for MII media
handling, ether_mediastatus() and ether_mediachange(). Check for
a non-ENXIO error return from mii_mediachg(). (ENXIO indicates
that a PHY is suspended.)

This patch shrinks the source code size by 979 lines. There was
a 5100-byte savings on the NetBSD/i386 kernel configuration, ALL.

I have made a few miscellaneous changes, too:

gem(4): use LIST_EMPTY(), LIST_FOREACH().
mtd(4): handle media ioctls, for a change!
axe(4): do not track link status in sc->axe_link any longer
nfe(4), aue(4), axe(4), udav(4), url(4): do not reset all PHYs
on a change of media

Except for the change to mtd(4), no functional changes are intended.

XXX This patch affects more architectures than I can feasibly
XXX compile and run. I have compiled macppc, sparc64, i386. I
XXX have run the patches on i386 boxen with bnx(4) and sip(4).
XXX Compiling and running on evbmips (MERAKI, ADM5120) is in
XXX progress.
 1.62  01-Sep-2007  dyoung branches: 1.62.6; 1.62.12;
Change a bazillion occurrences of code resembling this,

error = (cmd == SIOCADDMULTI) ?
ether_addmulti(ifr, &sc->sc_ec) :
ether_delmulti(ifr, &sc->sc_ec);

if (error == ENETRESET) {

to this,

if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) {

which does the same thing.

(A bazillion is a very large number. This seems to make the i386
ALL kernel smaller by 3kB to 4kB.)

Use ifreq_getaddr() twice in es(4).

Whitespace nits.
 1.61  29-Aug-2007  dyoung Constify: LLADDR() -> CLLADDR().
 1.60  04-Mar-2007  christos branches: 1.60.2; 1.60.10; 1.60.14; 1.60.16;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.59  16-Nov-2006  christos branches: 1.59.4;
__unused removal on arguments; approved by core.
 1.58  12-Oct-2006  christos - sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386
 1.57  07-Sep-2006  dogcow branches: 1.57.2; 1.57.4;
remove more vestiges of CCITT, LLC, HDLC, NS, and NSIP.
 1.56  14-Apr-2006  christos Coverity CID 1112: If we did not get a packet, bail out early.
 1.55  20-Feb-2006  thorpej branches: 1.55.2; 1.55.4; 1.55.6;
Use device_is_active() rather than testing dv_flags for DVF_ACTIVE
directly.
 1.54  24-Dec-2005  perry branches: 1.54.2; 1.54.4; 1.54.6;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.
 1.53  11-Dec-2005  christos merge ktrace-lwp.
 1.52  27-Feb-2005  perry branches: 1.52.4;
nuke trailing whitespace
 1.51  04-Feb-2005  perry de-__P
 1.50  30-Jan-2005  thorpej Eliminate the use of M_HASFCS.
 1.49  30-Oct-2004  thorpej branches: 1.49.4; 1.49.6;
When adding/deleting multicast addresses, only whack the address
filter if the interface is marked RUNNING.

Fixes kern/27678.
 1.48  12-Aug-2004  mycroft Remove sc_offset. It's always 0, and if we did want to use it, "that's what
bus_space_subregion() is for".
 1.47  12-Aug-2004  mycroft Remove the "known bugs" section. I've fixed both of them.

Use tsleep() rather than delay(). XXX Most of these are probably unnecessary
anyway. In particular, I believe that what xi_full_reset() does is totally
gratuitous after power-cycling the socket; it should only be necessary if we
want to use power-saving mode.
 1.46  09-Aug-2004  mycroft Add a hack that makes the address register programming more reliable on my
CE2 cards.
 1.45  09-Aug-2004  mycroft The "savedpage" stuff is nonsense. Every place we touch the device is
protected by splnet(), so there's no reason to even try.
 1.44  09-Aug-2004  mycroft Go online in xi_init(), not xi_full_reset(). Enable/disable receive in
xi_init()/xi_stop().
 1.43  08-Aug-2004  mycroft Don't try to use the MII media status if we're not using MII.
 1.42  08-Aug-2004  mycroft * Some rearrangement of where the power control hooks are called.
* Don't splnet() in xi_init() -- the callers do that.
* Don't do the enable call in xi_init() -- it should be done only in a process
context so it can sleep.
* Call xi_start() at the end of xi_init() to restart output.
* If the interface is already up, we only need to call xi_set_address() to
change state on SIOCSIFFLAGS.
 1.41  08-Aug-2004  mycroft Hey, my LEDs work now.
 1.40  08-Aug-2004  mycroft Set xidebug to 0 by default.
 1.39  08-Aug-2004  mycroft Split "xi" into a "xirc" frontend (similar to mhzc; it attaches two child
devices) and a "xi" backend.

My CE2 and CEM2 cards are now probed correctly. However, there are still
some problems with one model of the CE2, and the CEM2 doesn't seem to get
any modem interrupts.

While I'm at it, fix several bugs:

* The tuple scan for the MAC address was broken in multiple ways.
* xi_intr() did not deal well with a shared interrupt.
* We were setting the wrong page number to look at the receive status. (How
did this work???)
* Remove the xi_full_reset() from xi_reset(). Move the parts of
xi_full_reset() needed to undo the effect of xi_stop() into xi_init(). This
allows a stop/init pair to DTRT, and much quicker, as used by various
ioctl()s.
* Set the TRS register before reading the TSO register, as the Linux driver
does. While I'm at it, fix the name.
* Fix numerous problems with xi_set_address(). "Where do I begin?" There's a
chance that multicast works now, but I haven't tested it.
* Explicitly clear the MSR register, and also force SELECT_MII to 0 if we
didn't find any PHYs.
* Clean up some cruft that appears to be bogus.

Probably needs more work, but it's a start.
 1.38  07-Aug-2004  mycroft Simplify the revision matching code. This is more like what the current
Linux driver does.
 1.37  07-Aug-2004  mycroft Oops; forgot a return.
 1.36  07-Aug-2004  mycroft Tighten up the CIS parsing code a little.
Fix a double-free in a failure case.
Turn off the card if it doesn't fully attach.
 1.35  06-Aug-2004  mycroft Don't call rnd_detach_source() if we never called rnd_attach_source().
Very minor other cleanup.
 1.34  07-Jul-2004  mycroft More cleanup:
* Print "devinfo" in a canonial place (like we do in the SCSI code).
* Use aprint_{error,normal}() during attach.
* More PCMCIA_STR_* removal.
 1.33  28-Oct-2003  mycroft Eliminate bogus initializer.
We shouldn't be adding the time stamp to the entropy pool if the interrupt
wasn't for us.
 1.32  25-Oct-2003  christos Fix uninitialized variable warnings
 1.31  23-Jun-2003  martin branches: 1.31.2;
Make sure to include opt_foo.h if a defflag option FOO is used.
 1.30  27-Feb-2003  martin bus_size_t != bus_addr_t, so use bus_size_t where appropriate.
Fixes PR kern/20482 by John Ruschmeyer.
 1.29  22-Feb-2003  tsutsui hz -> Hz
 1.28  10-Dec-2002  bouyer Commit patch I sent to tech-net on 29/09/2002:
The driver puts the adapter in promisc mode to receive multicast addresses.
At last set the IFF_PROMISC flag so that the upper layer filters frames
that are not for us.
Sure, the real fix would be to get multicast filters working ...
 1.27  23-Oct-2002  perry remove redundant defines caught by lint
 1.26  02-Oct-2002  thorpej Add trailing ; to CFATTACH_DECL.
 1.25  30-Sep-2002  thorpej Use CFATTACH_DECL().
 1.24  27-Sep-2002  thorpej Declare all cfattach structures const.
 1.23  22-Sep-2002  martin Apply a patch from Murray Armfield in PR kern/18372: bring in some changes
from FreeBSD to improve receive performance.
 1.22  01-Jun-2002  lukem SIMPLEQ rototill:
- implement SIMPLEQ_REMOVE(head, elm, type, field). whilst it's O(n),
this mirrors the functionality of SLIST_REMOVE() (the other
singly-linked list type) and FreeBSD's STAILQ_REMOVE()
- remove the unnecessary elm arg from SIMPLEQ_REMOVE_HEAD().
this mirrors the functionality of SLIST_REMOVE_HEAD() (the other
singly-linked list type) and FreeBSD's STAILQ_REMOVE_HEAD()
- remove notes about SIMPLEQ not supporting arbitrary element removal
- use SIMPLEQ_FOREACH() instead of home-grown for loops
- use SIMPLEQ_EMPTY() appropriately
- use SIMPLEQ_*() instead of accessing sqh_first,sqh_last,sqe_next directly
- reorder manual page; be consistent about how the types are listed
- other minor cleanups
 1.21  05-May-2002  takemura branches: 1.21.2; 1.21.4;
Added cast '(u_int16_t *)'.
4th arg of bus_space_read_multi_2 and bus_space_write_multi2 shuld be
u_int16_t *.
 1.20  12-Jan-2002  tsutsui Call malloc(9) with M_ZERO flag instead of memset() after malloc().
 1.19  15-Dec-2001  soren Use bus_size_t's for bus space read/write offsets.
 1.18  13-Nov-2001  lukem add RCSIDs
 1.17  08-Nov-2001  christos PR/14503: Cesar Crusius: Add Xircom XE2000.
 1.16  25-Oct-2001  bouyer Commit changes I posted to tech-kern on Oct 14, which makes the ethernet part
of my Xircom RealPort Ethernet 10/100 + Modem (REM56G) work.
The modem part is still not usable (this would need some PCMCIA magic that
I don't know how to do; see my message to tech-kern on Oct 07).
Change to pcmcia_cis.c from OpenBSD.
I checked that this doesn't break a 3com 3C562D (ethernet+modem) which I
also have.
 1.15  26-Sep-2001  chris branches: 1.15.2;
Move the call to the xi_pcmcia_identify to before the first use of sc->sc_flags.
Doesn't fix my problem with auto negotiate, but it might help others.
 1.14  07-Jul-2001  thorpej branches: 1.14.2; 1.14.4;
bzero -> memset
 1.13  07-Jul-2001  thorpej bcmp -> memcmp
 1.12  07-Jul-2001  thorpej bcopy -> memcpy
 1.11  01-Jul-2001  gmcgarry Jumbo patch:

- data alignment fix
- kludge around broken multicast by using promisc mode
(IPv6 router solicitation now works)
- add support as random source
- support device power-up and power-down
- vlan support
- misc. comment and style fixes
 1.10  10-Jun-2001  gmcgarry Packet includes CRC, so mark it in the mbuf header. Fixes the
"discarding oversize frame (len=1518)" problem.
 1.9  21-Feb-2001  jdolecek branches: 1.9.2;
make some more constant arrays 'const'
 1.8  14-Jan-2001  thorpej Use splnet() to block network interrupts, not splimp().
 1.7  14-Dec-2000  thorpej ALTQ'ify.
 1.6  15-Nov-2000  thorpej branches: 1.6.2;
Move bpfattach()/bpfdetach() calls into ether_ifattach()/ether_ifdetach().
 1.5  01-Oct-2000  thorpej Move the check for "promisc + unicast + not for us" into ether_input(),
and change Ethernet drivers to always pass all received frames to
ether_input() (with a few exceptions, which are documented in the
code).
 1.4  31-Jul-2000  gmcgarry XIDEBUG_CONFIG -> XID_CONFIG. From R.Massar@Fh-Worms.DE
 1.3  24-Jul-2000  gmcgarry Improve the model identification and match. Addresses PR-10485.
 1.2  09-Jun-2000  gmcgarry branches: 1.2.2; 1.2.4;
Rename remaining references from xe to xi. Clean up debug messages.
 1.1  05-Jun-2000  gmcgarry New driver for Xircom CreditCard PCMCIA Ethernet. Replaces xe driver which
didn't work. Renamed to avoid clash with next68k network driver.
 1.2.4.2  22-Jun-2000  minoura Sync w/ netbsd-1-5-base.
 1.2.4.1  09-Jun-2000  minoura file if_xi.c was added on branch minoura-xpg4dl on 2000-06-22 17:07:46 +0000
 1.2.2.2  11-Jun-2001  he Pull up revision 1.10 (requested by gmcgarry):
Packet includes CRC, so mark it in the mbuf header. Fixes the
``discarding oversize frame (len=1518)'' problem.
 1.2.2.1  09-Aug-2000  gmcgarry Pull up rev 1.3-1.4: (approved by thorpej)

revision 1.3:
Improve the model identification and match. Addresses PR-10485.

revision 1.4:
XIDEBUG_CONFIG -> XID_CONFIG. From R.Massar@Fh-Worms.DE
 1.6.2.6  12-Mar-2001  bouyer Sync with HEAD.
 1.6.2.5  18-Jan-2001  bouyer Sync with head (for UBC+NFS fixes, mostly).
 1.6.2.4  05-Jan-2001  bouyer Sync with HEAD
 1.6.2.3  22-Nov-2000  bouyer Sync with HEAD.
 1.6.2.2  20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.6.2.1  15-Nov-2000  bouyer file if_xi.c was added on branch thorpej_scsipi on 2000-11-20 11:42:45 +0000
 1.9.2.10  19-Dec-2002  thorpej Sync with HEAD.
 1.9.2.9  11-Nov-2002  nathanw Catch up to -current
 1.9.2.8  18-Oct-2002  nathanw Catch up to -current.
 1.9.2.7  20-Jun-2002  nathanw Catch up to -current.
 1.9.2.6  28-Feb-2002  nathanw Catch up to -current.
 1.9.2.5  08-Jan-2002  nathanw Catch up to -current.
 1.9.2.4  14-Nov-2001  nathanw Catch up to -current.
 1.9.2.3  26-Sep-2001  nathanw Catch up to -current.
Again.
 1.9.2.2  24-Aug-2001  nathanw Catch up with -current.
 1.9.2.1  21-Jun-2001  nathanw Catch up to -current.
 1.14.4.1  01-Oct-2001  fvdl Catch up with -current.
 1.14.2.4  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
 1.14.2.3  23-Jun-2002  jdolecek catch up with -current on kqueue branch
 1.14.2.2  11-Feb-2002  jdolecek Sync w/ -current.
 1.14.2.1  10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.15.2.1  12-Nov-2001  thorpej Sync the thorpej-mips-cache branch with -current.
 1.21.4.2  30-Jun-2003  grant Pull up revision 1.28 (requested by bouyer in ticket #1351):

The driver puts the adapter in promisc mode to receive multicast addresses.
At last set the IFF_PROMISC flag so that the upper layer filters frames
that are not for us.
 1.21.4.1  02-Oct-2002  lukem Pull up revision 1.23 (requested by martin in ticket #891):
Apply a patch from Murray Armfield in PR kern/18372: bring in some changes
from FreeBSD to improve receive performance.
 1.21.2.1  20-Jun-2002  gehenna catch up with -current.
 1.31.2.8  04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.31.2.7  04-Feb-2005  skrll Sync with HEAD.
 1.31.2.6  02-Nov-2004  skrll Sync with HEAD.
 1.31.2.5  21-Sep-2004  skrll Fix the sync with head I botched.
 1.31.2.4  18-Sep-2004  skrll Sync with HEAD.
 1.31.2.3  25-Aug-2004  skrll Sync with HEAD.
 1.31.2.2  12-Aug-2004  skrll Sync with HEAD.
 1.31.2.1  03-Aug-2004  skrll Sync with HEAD
 1.49.6.2  19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.49.6.1  12-Feb-2005  yamt sync with head.
 1.49.4.1  29-Apr-2005  kent sync with -current
 1.52.4.4  21-Jan-2008  yamt sync with head
 1.52.4.3  03-Sep-2007  yamt sync with head.
 1.52.4.2  30-Dec-2006  yamt sync with head.
 1.52.4.1  21-Jun-2006  yamt sync with head.
 1.54.6.1  22-Apr-2006  simonb Sync with head.
 1.54.4.1  09-Sep-2006  rpaulo sync with head
 1.54.2.1  01-Mar-2006  yamt sync with head.
 1.55.6.1  24-May-2006  tron Merge 2006-05-24 NetBSD-current into the "peter-altq" branch.
 1.55.4.1  19-Apr-2006  elad sync with head.
 1.55.2.2  14-Sep-2006  yamt sync with head.
 1.55.2.1  24-May-2006  yamt sync with head.
 1.57.4.2  10-Dec-2006  yamt sync with head.
 1.57.4.1  22-Oct-2006  yamt sync with head
 1.57.2.1  18-Nov-2006  ad Sync with head.
 1.59.4.1  12-Mar-2007  rmind Sync with HEAD.
 1.60.16.2  23-Mar-2008  matt sync with HEAD
 1.60.16.1  06-Nov-2007  matt sync with HEAD
 1.60.14.1  03-Sep-2007  jmcneill Sync with HEAD.
 1.60.10.1  03-Sep-2007  skrll Sync with HEAD.
 1.60.2.1  09-Oct-2007  ad Sync with head.
 1.62.12.1  20-Jan-2008  bouyer Sync with HEAD
 1.62.6.1  18-Feb-2008  mjf Sync with HEAD.
 1.63.6.2  17-Jan-2009  mjf Sync with HEAD.
 1.63.6.1  02-Jun-2008  mjf Sync with HEAD.
 1.64.12.2  28-Apr-2009  skrll Sync with HEAD.
 1.64.12.1  19-Jan-2009  skrll Sync with HEAD.
 1.64.10.1  13-Dec-2008  haad Update haad-dm branch to haad-dm-base2.
 1.64.4.4  11-Aug-2010  yamt sync with head.
 1.64.4.3  11-Mar-2010  yamt sync with head
 1.64.4.2  16-May-2009  yamt sync with head
 1.64.4.1  04-May-2009  yamt sync with head.
 1.65.4.1  13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.70.4.1  30-May-2010  rmind sync with head
 1.70.2.1  30-Apr-2010  uebayasi Sync with HEAD.
 1.71.12.1  18-Feb-2012  mrg merge to -current.
 1.71.8.2  30-Oct-2012  yamt sync with head
 1.71.8.1  17-Apr-2012  yamt sync with head
 1.73.12.1  07-Apr-2014  tls Be a little more clear and consistent about harvesting entropy from devices:

1) deprecate RND_FLAG_NO_ESTIMATE

2) define RND_FLAG_COLLECT_TIME, RND_FLAG_COLLECT_VALUE

3) define RND_FLAG_ESTIMATE_TIME, RND_FLAG_ESTIMATE_VALUE

4) define RND_FLAG_DEFAULT: RND_FLAG_COLLECT_TIME|
RND_FLAG_COLLECT_VALUE|RND_FLAG_ESTIMATE_TIME

5) Make entropy harvesting from environmental sensors a little more generic
and remove it from individual sensor drivers.

6) Remove individual open-coded delta-estimators for values from a few
places in the tree (uvm, environmental drivers).

7) 0 -> RND_FLAG_DEFAULT, actually gather entropy from various drivers
that had stubbed out code, other minor cleanups.
 1.73.2.2  03-Dec-2017  jdolecek update from HEAD
 1.73.2.1  20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.74.4.5  05-Feb-2017  skrll Sync with HEAD
 1.74.4.4  05-Oct-2016  skrll Sync with HEAD
 1.74.4.3  09-Jul-2016  skrll Sync with HEAD
 1.74.4.2  19-Mar-2016  skrll Sync with HEAD
 1.74.4.1  06-Jun-2015  skrll Sync with HEAD
 1.77.2.2  07-Jan-2017  pgoyette Sync with HEAD. (Note that most of these changes are simply $NetBSD$
tag issues.)
 1.77.2.1  04-Nov-2016  pgoyette Sync with HEAD
 1.80.14.5  26-Jan-2019  pgoyette Sync with HEAD
 1.80.14.4  18-Jan-2019  pgoyette Synch with HEAD
 1.80.14.3  06-Sep-2018  pgoyette Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)
 1.80.14.2  28-Jul-2018  pgoyette Sync with HEAD
 1.80.14.1  25-Jun-2018  pgoyette Sync with HEAD
 1.80.8.2  06-Nov-2019  martin Pull up following revision(s) (requested by msaitoh in ticket #1427):

sys/arch/arm/broadcom/bcm53xx_eth.c: revision 1.39
sys/dev/pcmcia/if_xi.c: revision 1.91
sys/dev/ic/aic6915.c: revision 1.40
sys/dev/pci/if_tl.c: revision 1.117
sys/arch/arm/gemini/gemini_gmac.c: revision 1.18
sys/dev/ic/elinkxl.c: revision 1.133
sys/dev/pci/if_ste.c: revision 1.57
sys/dev/pci/if_alc.c: revision 1.43
sys/dev/pci/if_stge.c: revision 1.72
sys/dev/pci/if_ale.c: revision 1.34
sys/dev/pci/if_age.c: revision 1.62
sys/dev/pci/if_txp.c: revision 1.60
sys/dev/ic/i82557.c: revision 1.156
sys/dev/pci/if_vte.c: revision 1.27
sys/arch/powerpc/booke/dev/pq3etsec.c: revision 1.47
sys/arch/arm/gemini/if_gpn.c: revision 1.13

if_percpuq(9) and ether_input() automatically increment if_ipackets, so don't add number of
RX frames from device's statistics counter to if_ipackets to avoid double
count.
 1.80.8.1  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.
 1.82.2.3  13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.82.2.2  08-Apr-2020  martin Merge changes from current as of 20200406
 1.82.2.1  10-Jun-2019  christos Sync with HEAD
 1.90.2.2  28-Jan-2020  martin Pull up following revision(s) (requested by msaitoh in ticket #662):

sys/dev/pcmcia/if_xi.c: revision 1.93
sys/arch/x86/pci/if_vmx.c: revision 1.54
sys/dev/pci/if_de.c: revision 1.165
sys/arch/arm/ti/if_cpsw.c: revision 1.10
sys/arch/arm/omap/if_cpsw.c: revision 1.26
sys/dev/isa/if_iy.c: revision 1.112
sys/dev/pcmcia/if_ray.c: revision 1.96

Add ETHER_LOCK() and ETHER_UNLOCK() to protect ec_multiaddrs.

XXX These drivers don't check whether enm_addrlo and enm_addrhi are the same
or not, so it won't work correctly if an multicast address entry has a range.

Protect ec_multicnt.
 1.90.2.1  06-Nov-2019  martin Pull up following revision(s) (requested by msaitoh in ticket #403):

sys/arch/arm/broadcom/bcm53xx_eth.c: revision 1.39
sys/dev/pcmcia/if_xi.c: revision 1.91
sys/dev/ic/aic6915.c: revision 1.40
sys/dev/pci/if_tl.c: revision 1.117
sys/arch/arm/gemini/gemini_gmac.c: revision 1.18
sys/dev/ic/elinkxl.c: revision 1.133
sys/dev/pci/if_ste.c: revision 1.57
sys/dev/pci/if_alc.c: revision 1.43
sys/dev/pci/if_stge.c: revision 1.72
sys/dev/pci/if_ale.c: revision 1.34
sys/dev/pci/if_age.c: revision 1.62
sys/dev/pci/if_txp.c: revision 1.60
sys/dev/ic/i82557.c: revision 1.156
sys/dev/pci/if_vte.c: revision 1.27
sys/arch/powerpc/booke/dev/pq3etsec.c: revision 1.47
sys/arch/arm/gemini/if_gpn.c: revision 1.13

if_percpuq(9) and ether_input() automatically increment if_ipackets, so don't add number of
RX frames from device's statistics counter to if_ipackets to avoid double
count.
 1.93.2.1  29-Feb-2020  ad Sync with head.

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