CVS log for src/sys/dev/pci/if_age.c

Up to [cvs.NetBSD.org] / src / sys / dev / pci

Request diff between arbitrary revisions

Keyword substitution: kv
Default branch: MAIN

if_stats(9): Add ifp argument to if_stat..._ref.

This will enable us to pass the ifp through to a dtrace probe inside.

No functional change intended in this change, but this is an API
change visible to modules so it shouldn't be pulled up.

PR kern/58377

age_start(): Remove redundant IFQ_IS_EMPTY().  This very same condition
is checked as soon as we enter the loop 2 statements later.

age_start(): Replace "IFQ_DEQUEUE() -> IF_PREPEND() on failure" with
"IFQ_POLL() -> IFQ_DEQUEUE() on success (or fatal error)".

age_encap(): Use m_defrag(), not m_pullup(), to compact an mbuf chain
if it has too many DMA segments.  Let the caller handle dispose of the
packet on fatal errors.

fix various typos in comments, documentation and messages.

Mostly merge changes from HEAD upto 20200411

- Use the 64-bit PCI DMA tag if available.
- In age_dma_alloc(), ensure that all of the control data end up in the
  same 4GB segment, because the hardware requires this.

It doesn't make any sense to pass ETHER_ALIGN as the alignment constraint
to bus_dmamem_alloc().  Use PAGE_SIZE instead.

Sync with head.

Use ifmedia_fini().

Pull up following revision(s) (requested by msaitoh in ticket #671):

	sys/dev/pci/if_bce.c: revision 1.53
	sys/dev/pci/pccbbreg.h: revision 1.16
	sys/dev/ic/rt2860.c: revision 1.34
	sys/dev/pci/if_alc.c: revision 1.45
	sys/dev/pci/if_mcx.c: revision 1.5
	sys/dev/pci/if_pcn.c: revision 1.72
	sys/dev/pci/if_ale.c: revision 1.37
	sys/dev/pci/if_age.c: revision 1.65
	sys/dev/ieee1394/fwohcireg.h: revision 1.20
	sys/dev/ieee1394/fwohci.c: revision 1.143
	sys/dev/ieee1394/firewire.c: revision 1.49
	sys/dev/ic/am79900reg.h: revision 1.10

 Use unsigned to avoid undefined behavior. Found by kUBSan.

Adopt <net/if_stats.h>.

Pull up following revision(s) (requested by msaitoh in ticket #1462):
        sys/dev/pci/if_age.c: revision 1.61, 1.63-1.64 via patch

- Fix direction of the loop in age_get_macaddr().
- Fix multicast handling. All Atheros controllers use big-endian form
  when computing multicast hash.
- Fix a bug that IFF_ALLMULTI is almost always set.

 Use unsigned to avoid undefined behavoir. Found by kUBSan.

Pull up following revision(s) (requested by msaitoh in ticket #483):

	sys/dev/pci/if_cas.c: revision 1.36
	sys/dev/pci/if_alc.c: revision 1.44
	sys/dev/pci/if_ale.c: revision 1.35
	sys/dev/pci/if_ale.c: revision 1.36
	sys/dev/pci/if_age.c: revision 1.64

Fix a bug that IFF_ALLMULTI is almost always set.
 OpenBSD's ac_multirangecnt is not NetBSD's ec_multicnt.

 Remove accidentally committed debug code. Sorry.

Pull up following revision(s) (requested by msaitoh in ticket #482):

	sys/dev/pci/if_age.c: revision 1.63

Fix multicast handling. All Atheros controllers use big-endian form
when computing multicast hash. Same as OpenBSD.

Fix a bug that IFF_ALLMULTI is almost always set.

 OpenBSD's ac_multirangecnt is not NetBSD's ec_multicnt.

 Fix multicast handling. All Atheros controllers use big-endian form
when computing multicast hash. Same as OpenBSD.

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.

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.

 if_percpuq(9) automatically increments if_ipackets, so don't add number of
RX frames from device's statistics counter to if_ipackets to avoid double
count.

Pull up following revision(s) (requested by maxv in ticket #216):

	sys/dev/pci/if_age.c: revision 1.61

Fix direction of the loop.

Fix direction of the loop.

Found by the lgtm bot.

 Don't automatically set ec_capenable's ETHERCAP_VLAN_HWTAGGING bit in
vlan_config() to make it user-controllable. Instead, set the bit in
xxx_attach().

Sync with HEAD

 Use ETHER_LOCK()/ETHER_UNLOCK() for all ethernet drivers to protect ec_multi*.

 Whitespace fix (mainly tabify).

No functional change:
 - Simplify MII structure initialization and reference.
 - u_int*_t -> uint*_t.
 - KNF

 Centralize ETHER_ALIGN into net/if_ether.h. Note that this commit also changes
if_upgt.c's ETHER_ALIGN from 0 to 2.

Sync with HEAD

 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

Sync with HEAD, resolve a few conflicts

use pci_intr_establish_xname() everywhere

Sync with HEAD

 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.

Sync with HEAD

Fix M_PKTHDR use in if_alc, if_age and if_ena.

if_alc and if_age always put in _rxhead a M_PKTHDR-flagged mbuf, so the
flag must always be present. Instead of manually adding the flag, add a
KASSERT to ensure it is already there. If it weren't, there would be
memory corruptions.

Same in if_ena, but this one does not compile so we don't really care.

Also, use m_remove_pkthdr to remove the flag, instead of doing it
manually. This ensures the tags get freed (even though these drivers
don't seem to be using mtags).

update from HEAD

Pull up following revision(s) (requested by knakahara in ticket #302):
	sys/arch/powerpc/booke/dev/pq3etsec.c: 1.30-1.31
	sys/arch/x86/pci/if_vmx.c: 1.20
	sys/dev/ic/i82557.c: 1.148
	sys/dev/ic/rtl8169.c: 1.152
	sys/dev/pci/cxgb/cxgb_sge.c: 1.5
	sys/dev/pci/if_age.c: 1.51
	sys/dev/pci/if_alc.c: 1.25
	sys/dev/pci/if_ale.c: 1.23
	sys/dev/pci/if_bge.c: 1.311
	sys/dev/pci/if_bge.c: 1.312
	sys/dev/pci/if_bnx.c: 1.62
	sys/dev/pci/if_jme.c: 1.32
	sys/dev/pci/if_nfe.c: 1.64
	sys/dev/pci/if_sip.c: 1.167
	sys/dev/pci/if_stge.c: 1.63-1.64
	sys/dev/pci/if_ti.c: 1.102
	sys/dev/pci/if_txp.c: 1.48
	sys/dev/pci/if_vge.c: 1.61
	sys/dev/pci/if_wm.c: 1.538
	sys/dev/pci/ixgbe/ix_txrx.c: 1.29 via patch
	sys/net/agr/if_agrether_hash.c: 1.4
	sys/net/if_ether.h: 1.67-1.68
	sys/net/if_ethersubr.c: 1.244
	sys/net/if_vlan.c: 1.100
	sys/net80211/ieee80211_input.c: 1.89
	sys/net80211/ieee80211_output.c: 1.59
	sys/sys/mbuf.h: 1.171
VLAN ID uses pkthdr instead of mtag now. Contributed by s-yamaguchi@IIJ.
I just commit by proxy. Reviewed by joerg@n.o and christos@n.o, thanks.
See http://mail-index.netbsd.org/tech-net/2017/09/26/msg006459.html
--
only get vtag when we have vtag like the other drivers.
--
- only get the vtag if we have it like the other drivers
- mask the hardware vlan tag
--
- add a constant for the vlan mask.
- enforce that we have a tag before we get it.
only get vtag when we have vtag like the other drivers.
like if_bge.c:1.312 and if_stge.c:1.64.
fixed by s-yamaguchi@IIJ, thanks.

VLAN ID uses pkthdr instead of mtag now. Contributed by s-yamaguchi@IIJ.

I just commit by proxy. Reviewed by joerg@n.o and christos@n.o, thanks.
See http://mail-index.netbsd.org/tech-net/2017/09/26/msg006459.html

XXX need pullup to -8 branch

Sync with HEAD

Sync with HEAD.  (Note that most of these changes are simply $NetBSD$
tag issues.)

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

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.

Sync with HEAD

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.

Sync with HEAD

PR/50817: David Binderman: Delete dead code (copy from if_et.c)

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!

Sync with HEAD

Convert sys/dev to use <sys/rndsource.h>.

Rebase to HEAD as of a few days ago.

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")

sync with head

make pci_intr_string and eisa_intr_string take a buffer and a length
instead of relying in local static storage.

PR/48606: Lloyd Parkes: Drivers not using ifp->if_input but using ether_input
directly.

resync from head

remove trailing whitespace

sync with head

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.

Pull up the following revisions(s) (requested by bouyer in ticket #1694):
	sys/dev/pci/if_age.c:	revision 1.40 via patch

- age_init() is called from age_watchdog() which is in interrupt context; we
can't sleep here or we get a DIAGNOSTIC panic when age_watchdog() fires.
- More correct bus_dma(9) usage in age_encap()
- Introduce a age_shutdown() to be called by pmf(9) at shutdown time,
to stop the DMA engine.
- Be consistent in WAIT/NOWAIT use in init routines
- Use BUS_DMA_COHERENT where appropriate
- Rework the interrupt routine a bit, and ACK but do not disable interrupts
here. There seems to be a race where interrupts would not be properly
reenabled after this, leading do watchdog timeouts.

age_init() is called from age_watchdog() which is interrupt context, we
can't sleep here or we get a DIAGNOSTIC panic when age_watchdog() fires.
More correct bus_dma(9) usage in age_encap()
Introduce a age_shutdown() to be called by pmf(9) at shutdown time,
to stop the DMA engine. My system would't properly reboot without this.
Be consistent in WAIT/NOWAIT use in init routines
Use BUS_DMA_COHERENT where appropriate
Rework the interrupt routine a bit, and ACK but do not disable interrupts
here. There seems to be a race where interrupts would not be properly
reenabled after this, leading do watchdog timeouts.

With these changes, the on-board age(4) on ftp.fr.netbsd.org seems to
be finally working properly.

sync with head

Sync with HEAD.

sync with head.

PR kern/38871: Fix VLAN

sync with head

Sync with HEAD.

sync to netbsd-5

file if_age.c was added on branch matt-nb5-mips64 on 2010-04-21 00:27:40 +0000

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.

sync with head

A pointer typedef entails trading too much flexibility to declare const
and non-const types, and the kernel uses both const and non-const
PMF qualifiers and device suspensors, so change the pmf_qual_t and
device_suspensor_t typedefs from "pointers to const" to non-pointer,
non-const types.

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.

Expand PMF_FN_* macros.

Pull up following revision(s) (requested by cegger in ticket #1124):
	sys/dev/pci/if_age.c: revision 1.34
	sys/dev/pci/if_ale.c: revision 1.9
Use m_pullup to handle defragmentation.
Reinject mbuf into TX queue when it couldn't be loaded.
diff for age(4) reviewed/discussed with plunky@ several weeks ago.

Pull up following revision(s) (requested by cegger in ticket #1124):
	sys/dev/pci/if_age.c: revision 1.30
- Don't access VPD even if hardware advertised the capability.
  It seems that some revisions of the controllers hang while accessing
  the VPD. Because VPD access routine is now unused, nuke it.
- Let TWSI reload EEPROM if VPD capability is detected. Reloading
  the EEPROM will also set the Ethernet address, so age(4) now reads
  AGE_PAR0 and AGE_PAR1 register to get the Ethernet address. This removes
  removes a lot of hacks and enhance readability a lot.
- Double PHY reset timeout as it takes more time to take the PHY out of
  power-saving state.
- Explicitly check power-saving state by checking undocumented PHY
  registers. If link is not up, poke undocumented registers to take
  PHY out of power-saving state. This is the same thing done by the
  Linux driver.
- Don't rely on auto-clearing feature of master reset bit, just wait
  1ms and check idle status of MAC.
From FreeBSD via OpenBSD.

Pull up following revision(s) (requested by cegger in ticket #1124):
	sys/dev/pci/if_age.c: revision 1.29
support flow control. from OpenBSD.
tested by hans@

Use m_pullup to handle defragmentation.
Reinject mbuf into TX queue when it couldn't be loaded.

diff for age(4) reviewed/discussed with plunky@ several weeks ago.

sync with head

Invert logic around nested pmf(9) registrations for readability.

sync with head.

make RX hw checksum available by default.
TX hw checksum locks up interface.

fix typo

- Don't access VPD even if hardware advertised the capability.
  It seems that some revisions of the controllers hang while accessing
  the VPD. Because VPD access routine is now unused, nuke it.
- Let TWSI reload EEPROM if VPD capability is detected. Reloading
  the EEPROM will also set the Ethernet address, so age(4) now reads
  AGE_PAR0 and AGE_PAR1 register to get the Ethernet address. This removes
  removes a lot of hacks and enhance readability a lot.
- Double PHY reset timeout as it takes more time to take the PHY out of
  power-saving state.
- Explicitly check power-saving state by checking undocumented PHY
  registers. If link is not up, poke undocumented registers to take
  PHY out of power-saving state. This is the same thing done by the
  Linux driver.
- Don't rely on auto-clearing feature of master reset bit, just wait
  1ms and check idle status of MAC.

From FreeBSD via OpenBSD.

support flow control. from OpenBSD.
tested by hans@

Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.

sync with head.

Pull up following revision(s) (requested by cegger in ticket #735):
	sys/dev/pci/if_age.c: revisions 1.1-1.28
	sys/dev/pci/if_agereg.h: revisions 1.1-1.2
	sys/dev/pci/if_ale.c: revisions 1.1-1.3
	sys/dev/pci/if_alereg.h: revisions 1.1-1.2
	sys/dev/pci/files.pci: revisions 1.310-1.313
	sys/dev/mii/atphy.c: revisions 1.1-1.5
	sys/dev/mii/files.mii: revision 1.42
	share/man/man4/age.4: revisions 1.1-1.3
	share/man/man4/ale.4: revisions 1.1-1.2
	share/man/man4/atphy.4: revisions 1.1-1.2
	share/man/man4/Makefile: revisions 1.486, 1.489
	distrib/sets/lists/man/mi: revisions 1.1118, 1.1132
	sys/arch/i386/conf/GENERIC: revisions 1.928, 1.933
	sys/arch/i386/conf/XEN2_DOM0: revisions 1.57, 1.60
	sys/arch/amd64/conf/GENERIC: revisions 1.239, 1.241
	sys/arch/amd64/conf/XEN3_DOM0: revisions 1.38, 1.42
Add the age(4) and ale(4) drivers for Attansic L1 and Atheros
AR8121/AR8113/AR8114 devices respectively.

file if_age.c was added on branch yamt-nfs-mp on 2009-05-04 08:12:55 +0000

file if_age.c was added on branch netbsd-5 on 2009-05-03 23:45:47 +0000

on detach, deregister from pmf and free resource

Sync with HEAD.

age_intr: don't return w/o ack. the interrupt.
Add a comment when this special case can happen.

Fix wrong arguments of bus_dmamem_free(9).

XXX: not all resouces are freed properly on error path in age_dma_alloc().

mimic fix from nfe(4):
when bus_dmamap_create fails, then the map pointer is undefined.
age_dma_free() assumes, the map pointer is NULL. Make the assumption
always true by setting the map pointer to NULL in bus_dmamap_create()
error path in order to prevent age_dma_free() to call bus_dmamap_destroy()
on an invalid map.

make multicast working.
Diff from OpenBSD's if_age.c rev. 1.2.

Sync with HEAD.

when attach routine fails, also free DMA memory and interrupt mapping.
Diff from OpenBSD's if_age.c rev. 1.2.
ok cube@

make this compile w/o VLAN

age_dma_free: set smb pointers to NULL for consistency
age_stop: call mii_down()
ok cube@

If the bus_dmamap_load_mbuf() status was non-zero, then the DMA
map is undefined, so do not try to unload it.

Initialize ec_mii, and re-use more ethernet common code for media
handling.

Replace an anonymous constant by PCI_COMMAND_INTERRUPT_DISABLE.

These changes have been compile-tested, only.

Adapt age_stop() as our ethernet stack expects it.
This makes 'ifconfig age0 down' working.
Ok cube@

age_dma_alloc(): Don't allocate more than really required.
It is less likely to fail with ENOMEM when we are short on dma-safe memory.
This happens more likely when running NetBSD as Xen Dom0.

age_dma_alloc(): print error code to figure out why it failed.

remove brackets from return statements.
No functional change.

fix error path: don't crash when age_dma_alloc() fails.

- fix test for IPv4 csum.
- No need to double negate TCP/UDP csum test

Improve handling of transmitting large packets.
Sending large packets works better, but still needs investigations.

struct device -> device_t

fix crash when bringing up the device and no cable is plugged in

Roll our own ETHER_ALIGN #define like many other driver do.
Use ETHER_ALIGN to calculate number of segments correctly (actually the same way as FreeBSD and OpenBSD do).
Also use ETHER_ALIGN to correctly adjust new mbufs.
This makes the driver finally work. Tested by Jochen Kunz:
ping -nf 192.168.2.1
PING 192.168.2.1 (192.168.2.1): 56 data bytes

----192.168.2.1 PING Statistics----
28949 packets transmitted, 28949 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 0.157/0.364/2.272/0.023 ms
  2710.6 packets/sec sent,  2710.6 packets/sec received


XXX Shouldn't if_ether.h provide ETHER_ALIGN instead of defining it in all drivers?

Sync with HEAD.

file if_age.c was added on branch nick-hppapmap on 2009-01-19 13:18:25 +0000

fix botched age_ioctl(): don't try to roll its own handling when ether_ioctl() is doing all of it right.
Tested by Jochen Kunz.

beautify dmesg output

Sync with HEAD.

file if_age.c was added on branch mjf-devfs2 on 2009-01-17 13:28:59 +0000

Until we do WOL, the PCI power management suspend code is a noop.

don't call age_stop and age_init in suspend/resume.
pmf network class is already doing that.
pointed out by jmcneill

rename PCI_PMCSR_PME to PCI_PMCSR_PME_STS.
Per request from jmcneill

- fix age_read_vpd_word().
- add power management support. From FreeBSD.

add RCSID

Driver for Attansic L1 gigabit ethernet driver.

Written by Pyun YongHyeon for FreeBSD, ported to DragonFlyBSD
by Sepherosa Ziehau, ported to OpenBSD by Kevin Lo and then
ported to NetBSD by me.

XXX Driver needs testing.