Add some more #define and use __BITS with existing ones.

Same code before and after.

Use more BITS(3)

Shorten a bit definition name.

Use __BIT{,S}

Remove redundant register offsets in the comments.

branches: 1.3.16; 1.3.58;
Add hardware checksumming support.

Add gem versions of collision counters.

branches: 1.1.2; 1.1.4;
Initial Zynq (Xilinx) support
Add support for ZedBoard evaluation board and Parallella board.
* cemac(4) Cadence EMAC/GEM(Gigabit) Ethernet Controller driver
based on at91emac

Use ether_getaddr().

Allow non-Realtek PHYs to be used with Zynq SoCs.

The cemac driver used to skip the first PHY found in order to work
around a bug where Realtek PHYs attached to a cemac Ethernet would
report at PHY numbers 0 and 1. Unfortunately if you don't have this
bug, then your only PHY would get skipped.

The Zynq FDT always has a working PHY number recorded in it, so we now
simply use that number (if present) instead of searching for all
available PHYs.

fix whitespace from previous

Make cemac(4) MP safe.

Tested with qemu and

qemu-system-arm \
-kernel netbsd.ub \
-dtb zynq-zc702.dtb \
-M xilinx-zynq-a9 \
-sd armv7.img \
-append "root=ld0a -x -v" \
-serial null -serial mon:stdio \
-nographic

Rename a softc member. NFC.

Sprinkle some const

Shorten a bit definition name.

Wrap long lines

Whitespace

Comment fixes.

Use roundup - same code before and after.

Sprinkle const and remove unnecessary casts.

KNF

Re-organise to enable other attachments.

Header inclusion maintenance and KNF

KNF

G/C

KNF

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@

branches: 1.27.2;
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

Skip the first PHY found to remove the shadow PHY that appears at
the broadcast address 0.

Eliminate use of IFF_OACTIVE.

sys: Use if_init wrapper function.

Exception: Not in kern_pmf.c, for the kind of silly reason that it
avoids having kern_pmf.c refer to symbols defined only in net; this
avoids a pain in the rump.

Use prop_data_value (not prop_data_data_nocopy)

Adopt <net/if_stats.h>.

branches: 1.21.4;
Use ETHER_LOCK()/ETHER_UNLOCK() for all ethernet drivers to protect ec_multi*.

Whitespace fix (mainly tabify).

No functional change:
- Change ac(was arpcom) to ec(ethercom)
- Simplify MII structure initialization.
- u_int*_t -> uint*_t.
- KNF

Kill unused sc variable and fix the build.

On drivers which use MII(4) and have hook SIOC[GS]IFMEDIA which just pass to
ifmedia_ioctl(), the hook is not required because ether_ioctl has it
(if_ethersubr.c rev. 1.160). These drivers don't return ENETRESET in
ifmedia_ioctl(), so no functional change.

Remove very old IFF_NOTRAILERS flag.

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

Retire ipkdb entirely. The option was removed from the config files
yesterday.

ok kamil christos

branches: 1.13.2;
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.

It's not required to include net/bpfdesc.h. Remove it.

branches: 1.11.2; 1.11.8; 1.11.10;
Apply deferred if_start to more drivers

And annotate some XXX_start as it runs in softint to clarify that
it doesn't need deferred if_start.

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

branches: 1.9.2;
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.

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!

Add hardware checksumming support.

Fix logic for setting multicast addresses.

Setting CRC values for hashes is broken so all multicast addresses are
accepted for now.

Whitespace.

printf -> aprint.

Add gem versions of collision counters.

Remove leftover use of AF_NS and NS option

Unnecessary NETISR_NS is also removed.

branches: 1.1.2; 1.1.4;
Initial Zynq (Xilinx) support
Add support for ZedBoard evaluation board and Parallella board.
* cemac(4) Cadence EMAC/GEM(Gigabit) Ethernet Controller driver
based on at91emac

Allow non-Realtek PHYs to be used with Zynq SoCs.

The cemac driver used to skip the first PHY found in order to work
around a bug where Realtek PHYs attached to a cemac Ethernet would
report at PHY numbers 0 and 1. Unfortunately if you don't have this
bug, then your only PHY would get skipped.

The Zynq FDT always has a working PHY number recorded in it, so we now
simply use that number (if present) instead of searching for all
available PHYs.

Make cemac(4) MP safe.

Tested with qemu and

qemu-system-arm \
-kernel netbsd.ub \
-dtb zynq-zc702.dtb \
-M xilinx-zynq-a9 \
-sd armv7.img \
-append "root=ld0a -x -v" \
-serial null -serial mon:stdio \
-nographic

Rename a softc member. NFC.

Re-organise to enable other attachments.

G/C

KNF

branches: 1.1.2; 1.1.4; 1.1.20; 1.1.62;
Initial Zynq (Xilinx) support
Add support for ZedBoard evaluation board and Parallella board.
* cemac(4) Cadence EMAC/GEM(Gigabit) Ethernet Controller driver
based on at91emac