Re: CFT: 802.11 vap code

Sam Leffler пишет:
> A patch to integrate my multi-bss (aka vap) support for wireless can be
> found here:
> 
> http://www.freebsd.org/~sam/vap-2008051300.sh.gz
> 
> Note this is a shell script that overlays the CVS contents for HEAD.
> To apply it you do something like:
> 
> cvs -d /usr/ncvs co src
> cd src
> gzcat ../vap-2008051300.sh.gz | sh
> 
> The changes are extensive and require a full buildworld and kernel
> rebuild.  Committers with perforce access can find this code in the
> sam_vap branch.
> 
> So what is this stuff?  This is work I started many years ago to
> virtualize 802.11 wireless devices.  The intent was (mostly) to
> support multiple access points operating on top of a single radio.
> The classic example is you want to run a Hotspot and offer quality
> service to paying customers but still provide some level of service
> to freeloaders.  You can define two Virtual AP's (VAP's) and make
> one open with the second require authorization.  This is done by
> cloning virtual ifnet's from the parent device using ifconfig; e.g.
> 
> ifconfig wlan create wlandev ral0 wlanmode hostap
> 
> will generate a wlanX ifnet that supports ap operation.  Different
> devices are capable of supporting different services; some
> drivers/devices only support one vap at a time which is equivalent
> to what is currently in CVS but without using the mediaopt mechanism
> to switch "operating modes" (with vaps an interface never changes
> it's operating mode; when you no longer want to use one you just
> destroy it and create something else).
> 
> In practice most casual users will not encounter vaps except when
> they run ifconfig and see wlanX interfaces.  rc support is present
> to automatically create vaps' for station mode operation.  If you
> have an ath0 device you add this to your rc.conf:
> 
> vaps_ath0="wlan0"
> ifconfig_wlan0="DHCP WPA"
> 
> and you'll get a wlan0 ifnet created and wpa_supplicant will be
> brought up as usual (thanks to Brooks Davis for this work).
> 
> Vaps were motivated by doing multi-bss ap services but evolved to
> support many other features.  In particular WDS support falls out
> and later grew to support Dynamic WDS (DWDS) which is a follow-on
> design that combines WDS operation (i.e. 4-address frame encapsulation
> of wireless traffic) with normal station and access point operation
> to build more powerful and useful applications.  Sample scripts to
> setup DWDS relay and master nodes can be found in the directory:
> 
> tools/tools/net80211/scripts
> 
> along with many other scripts used in testing.
> 
> This code includes a major rewrite of the net80211 layer and
> significant changes to all wireless drivers.  Two drivers are still
> not converted: ipw and ndis.  Station and access point operation
> are well tested but adhoc mode is untested and likely broken.
> Monitor mode works but has one design/usage issue that may require
> changes.  The documentation is alpha-quality and needs work.
> 
> This work has been used in several products and been heavily tested
> in various forms but on non-FreeBSD platforms.  Work on the current
> version has been supported by Hobnob.  The most recent previous
> work was supported by Marvell (who also supported development of
> the mwl driver).  Atheros contributed code that was used to kickstart
> the vap + 802.11n functionality.  Any issues you hit are likely to be in
> drivers and not net80211--particularlly drivers that are less frequently
> used.
> 
> My goal is to get this work into CVS asap.  There is one outstanding
> locking issue that people may encounter: the net80211 layer holds a
> lock over calls to the driver's init method which can cause WITNESS
> complaints if the driver sleeps.  This is most noticeable on drivers
> that load firmware or otherwise sleep (e.g. usb drivers).  Some drivers
> can avoid this by loading firmware in the vap create method but the
> usb drivers may have to drop the lock and open a race.  Folks are
> encouraged to pitch in to help with these and any other issues they
> encounter.
> 
> Note there are a few new drivers included: iwn (Intel 4965), bwi
> (Broadcom 43xx), and mwl (Marvell 88W8363).  The iwn driver is
> unfinished; it should support 802.11n but progress has been slow
> due to poor vendor involvement.  The bwi driver is experimental and
> folks are encouraged to help sephe get it into shape for commit (it
> currently is not ready CVS).  mwl is provided as an example of a
> working 11n driver; I'm not aware of any cardbus/pci retail products
> that use this part and firmware is presently unavailable (we could
> get firmware but since all applications are presently embedded
> anyone that would want firmware already has it).  Finally, wi users
> should note there is a rewrite of the driver that now works properly
> with wpa_supplicant and supports WPA (both in station and ap modes)
> with Intersil Prism cards and rev 1.7.0 and later firmware.  (But
> the flip side is that Symbol card support was dropped and some older
> cards may not work well w/o fixups.)
> 
> Please report problems to the public mailing lists.  My time is scarce
> so please investigate fixes and not just report problems.
> 
> BSDCan plug: I'll be giving a tutorial in Ottawa that uses this work
> so folks looking to attend can get a headstart.
> 
>        Sam
buildworld:
(cd /usr/src/rescue/rescue/../../sbin/ifconfig &&  make -DRESCUE 
CRUNCH_CFLAGS=-DRESCUE DIRPRFX=rescue/rescue/ifconfig/ depend && make 
-DRESCUE CRUNCH_CFLAGS=-DRESCUE DIRPRFX=rescue/rescue/ifconfig/ 
ifconfig.o af_link.o af_inet.o af_inet6.o af_atalk.o ifclone.o ifmac.o 
ifmedia.o ifvlan.o ifieee80211.o regdomain.o ifcarp.o ifgroup.o 
ifpfsync.o ifbridge.o iflagg.o af_ipx.o)
rm -f .depend
mkdep -f .depend -a    -DRESCUE /usr/src/sbin/ifconfig/ifconfig.c 
/usr/src/sbin/ifconfig/af_link.c /usr/src/sbin/ifconfig/af_inet.c 
/usr/src/sbin/ifconfig/af_inet6.c /usr/src/sbin/ifconfig/af_atalk.c 
/usr/src/sbin/ifconfig/ifclone.c /usr/src/sbin/ifconfig/ifmac.c 
/usr/src/sbin/ifconfig/ifmedia.c /usr/src/sbin/ifconfig/ifvlan.c 
/usr/src/sbin/ifconfig/ifieee80211.c /usr/src/sbin/ifconfig/regdomain.c 
/usr/src/sbin/ifconfig/ifcarp.c /usr/src/sbin/ifconfig/ifgroup.c 
/usr/src/sbin/ifconfig/ifpfsync.c /usr/src/sbin/ifconfig/ifbridge.c 
/usr/src/sbin/ifconfig/iflagg.c /usr/src/sbin/ifconfig/af_ipx.c
echo ifconfig: /usr/obj/usr/src/tmp/usr/lib/libc.a 
/usr/obj/usr/src/tmp/usr/lib/libbsdxml.a 
/usr/obj/usr/src/tmp/usr/lib/libsbuf.a 
/usr/obj/usr/src/tmp/usr/lib/libipx.a >> .depend
cc -O2 -pipe  -Wall -Wmissing-prototypes -Wcast-qual -Wwrite-strings 
-Wnested-externs -DRESCUE -Wno-pointer-sign -c 
/usr/src/sbin/ifconfig/ifconfig.c
cc -O2 -pipe  -Wall -Wmissing-prototypes -Wcast-qual -Wwrite-strings 
-Wnested-externs -DRESCUE -Wno-pointer-sign -c 
/usr/src/sbin/ifconfig/af_link.c
cc -O2 -pipe  -Wall -Wmissing-prototypes -Wcast-qual -Wwrite-strings 
-Wnested-externs -DRESCUE -Wno-pointer-sign -c 
/usr/src/sbin/ifconfig/af_inet.c
cc -O2 -pipe  -Wall -Wmissing-prototypes -Wcast-qual -Wwrite-strings 
-Wnested-externs -DRESCUE -Wno-pointer-sign -c 
/usr/src/sbin/ifconfig/af_inet6.c
cc -O2 -pipe  -Wall -Wmissing-prototypes -Wcast-qual -Wwrite-strings 
-Wnested-externs -DRESCUE -Wno-pointer-sign -c 
/usr/src/sbin/ifconfig/af_atalk.c
cc -O2 -pipe  -Wall -Wmissing-prototypes -Wcast-qual -Wwrite-strings 
-Wnested-externs -DRESCUE -Wno-pointer-sign -c 
/usr/src/sbin/ifconfig/ifclone.c
cc -O2 -pipe  -Wall -Wmissing-prototypes -Wcast-qual -Wwrite-strings 
-Wnested-externs -DRESCUE -Wno-pointer-sign -c 
/usr/src/sbin/ifconfig/ifmac.c
cc -O2 -pipe  -Wall -Wmissing-prototypes -Wcast-qual -Wwrite-strings 
-Wnested-externs -DRESCUE -Wno-pointer-sign -c 
/usr/src/sbin/ifconfig/ifmedia.c
cc -O2 -pipe  -Wall -Wmissing-prototypes -Wcast-qual -Wwrite-strings 
-Wnested-externs -DRESCUE -Wno-pointer-sign -c 
/usr/src/sbin/ifconfig/ifvlan.c
cc -O2 -pipe  -Wall -Wmissing-prototypes -Wcast-qual -Wwrite-strings 
-Wnested-externs -DRESCUE -Wno-pointer-sign -c 
/usr/src/sbin/ifconfig/ifieee80211.c
cc -O2 -pipe  -Wall -Wmissing-prototypes -Wcast-qual -Wwrite-strings 
-Wnested-externs -DRESCUE -Wno-pointer-sign -c 
/usr/src/sbin/ifconfig/regdomain.c
/usr/src/sbin/ifconfig/regdomain.c:662: error: redefinition of 'rcsid'
/usr/src/sbin/ifconfig/regdomain.c:26: error: previous definition of 
'rcsid' was here
/usr/src/sbin/ifconfig/regdomain.c:686: error: redefinition of 'struct 
mystate'
/usr/src/sbin/ifconfig/regdomain.c:698: error: redefinition of 'struct 
ident'
/usr/src/sbin/ifconfig/regdomain.c:701: error: redeclaration of 
enumerator 'DOMAIN'
/usr/src/sbin/ifconfig/regdomain.c:65: error: previous definition of 
'DOMAIN' was here
/usr/src/sbin/ifconfig/regdomain.c:701: error: redeclaration of 
enumerator 'COUNTRY'
/usr/src/sbin/ifconfig/regdomain.c:65: error: previous definition of 
'COUNTRY' was here
/usr/src/sbin/ifconfig/regdomain.c:701: error: redeclaration of 
enumerator 'FREQBAND'
/usr/src/sbin/ifconfig/regdomain.c:65: error: previous definition of 
'FREQBAND' was here
/usr/src/sbin/ifconfig/regdomain.c:706: error: redefinition of 
'start_element'
/usr/src/sbin/ifconfig/regdomain.c:70: error: previous definition of 
'start_element' was here
/usr/src/sbin/ifconfig/regdomain.c:800: error: redefinition of 'decode_flag'
/usr/src/sbin/ifconfig/regdomain.c:164: error: previous definition of 
'decode_flag' was here
/usr/src/sbin/ifconfig/regdomain.c:850: error: redefinition of 'end_element'
/usr/src/sbin/ifconfig/regdomain.c:214: error: previous definition of 
'end_element' was here
/usr/src/sbin/ifconfig/regdomain.c:989: error: redefinition of 'char_data'
/usr/src/sbin/ifconfig/regdomain.c:353: error: previous definition of 
'char_data' was here
/usr/src/sbin/ifconfig/regdomain.c:1007: error: redefinition of 'findid'
/usr/src/sbin/ifconfig/regdomain.c:371: error: previous definition of 
'findid' was here
/usr/src/sbin/ifconfig/regdomain.c:1021: error: redefinition of 
'lib80211_regdomain_readconfig'
/usr/src/sbin/ifconfig/regdomain.c:385: error: previous definition of 
'lib80211_regdomain_readconfig' was here
/usr/src/sbin/ifconfig/regdomain.c:1103: error: redefinition of 
'cleanup_bands'
/usr/src/sbin/ifconfig/regdomain.c:467: error: previous definition of 
'cleanup_bands' was here
/usr/src/sbin/ifconfig/regdomain.c:1119: error: redefinition of 
'lib80211_regdomain_cleanup'
/usr/src/sbin/ifconfig/regdomain.c:483: error: previous definition of 
'lib80211_regdomain_cleanup' was here
/usr/src/sbin/ifconfig/regdomain.c:1156: error: redefinition of 
'lib80211_alloc_regdata'
/usr/src/sbin/ifconfig/regdomain.c:520: error: previous definition of 
'lib80211_alloc_regdata' was here
/usr/src/sbin/ifconfig/regdomain.c:1206: error: redefinition of 
'lib80211_free_regdata'
/usr/src/sbin/ifconfig/regdomain.c:570: error: previous definition of 
'lib80211_free_regdata' was here
/usr/src/sbin/ifconfig/regdomain.c:1216: error: redefinition of 
'lib80211_regdomain_findbysku'
/usr/src/sbin/ifconfig/regdomain.c:580: error: previous definition of 
'lib80211_regdomain_findbysku' was here
/usr/src/sbin/ifconfig/regdomain.c:1231: error: redefinition of 
'lib80211_regdomain_findbyname'
/usr/src/sbin/ifconfig/regdomain.c:595: error: previous definition of 
'lib80211_regdomain_findbyname' was here
/usr/src/sbin/ifconfig/regdomain.c:1246: error: redefinition of 
'lib80211_country_findbycc'
/usr/src/sbin/ifconfig/regdomain.c:610: error: previous definition of 
'lib80211_country_findbycc' was here
/usr/src/sbin/ifconfig/regdomain.c:1261: error: redefinition of 
'lib80211_country_findbyname'
/usr/src/sbin/ifconfig/regdomain.c:625: error: previous definition of 
'lib80211_country_findbyname' was here
*** Error code 1

Stop in /usr/src/sbin/ifconfig.
*** Error code 1

Stop in /tmp/obj/usr/src/rescue/rescue.
*** Error code 1

Stop in /usr/src/rescue/rescue.
*** Error code 1

Stop in /usr/src/rescue.
*** Error code 1

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.
#

# uname -a
FreeBSD acer.lissyara.int.otradno.ru 8.0-CURRENT FreeBSD 8.0-CURRENT #0: 
Mon Apr  7 23:36:27 MSD 2008 
lissyara_at_acer.lissyara.int.otradno.ru:/tmp/obj/usr/src/sys/main-color-console 
  amd64
#
source updated 2 hour ago