Commit Graph

753 Commits

Author SHA1 Message Date
sam
a1be64a6dc o change ieee80211_dup_bss to inherit explicit data from ic_bss instead of
blindy copying the node contents; this turns out to be a bad idea as we
  add more state in the node for things like WPA
o track node allocation failures in ieee80211_dup_bss instead of the callers

Obtained from:	madwifi
2004-04-02 23:09:24 +00:00
sam
32d170b4b8 track node allocation failure stats in ieee80211_alloc_node instead
of each caller

Obtained from:	madwifi
2004-04-02 23:06:41 +00:00
sam
ddc6548865 replace explicit malloc/free with MALLOC/FREE for portability
Obtained from:	madwifi
2004-04-02 23:02:24 +00:00
sam
aaa98f8e29 extract node matching logic into new ieee80211_match_bss routine for use
in background/incremental scanning

Obtained from:	madwifi
2004-04-02 23:00:30 +00:00
sam
ac53a5bdcf diff reduction against madwifi 2004-04-02 22:56:09 +00:00
sam
f57cb8d81b when processing beacon/probe response frames capture "is probe" in a
variable to improve code legibility since we're going to use it more
in forthcoming mods

Obtained from:	madwifi
2004-04-02 22:54:07 +00:00
sam
41b9a21d19 add a case of IEEE80211_ELEMID_IBSSPARMS so the statistic on unknown
elements is more meaningful (will add more with WPA merge)

Obtained from:	madwifi
2004-04-02 22:50:31 +00:00
sam
b9a1b7eda9 when doing internal bridging free the node instead of just dropping the
reference for consistency (explicit refcounting is discouraged)

Obtained from:	madwifi
2004-04-02 22:48:52 +00:00
sam
ca926004a9 when receiving a frame w/ a bad version number don't unref the node; the
driver is responsible for that

Obtained from:	madwifi
2004-04-02 22:47:11 +00:00
sam
4cfcf755a1 insure basic rate bit is set in derived rate set; this
works around a protocol/firmware problem with some versions found
in hermes/prism cards
2004-04-02 20:22:25 +00:00
sam
d007eaede6 diff reduction against madwifi/p4 2004-04-02 20:19:20 +00:00
sam
2f7d679f76 o add support for controlling the power of transmitted frames
o add support for controlling the 11g protection mechanism used
  to protect OFDM frames in a mixed 11b/g network

Reviewed by:	imp
2004-03-30 22:57:57 +00:00
sam
551dbe5269 Only call if_init when doing SIOCSIFADDR if the interface is not marked
up (IFF_UP).  This eliminates extraneous AP scanning.

Reviewed by:	imp
2004-03-30 22:53:52 +00:00
mux
3ca8d2f211 Add explicit dependency on "ether", since we use ether_ifattach(). 2004-03-16 19:25:55 +00:00
onoe
8fb32b2573 Change WI_RID_SCAN_RES compatibility interface to return the result after
active scan is completed just as WI_RID_READ_APS.
This fixes wicontrol -L for ath(4) and awi(4) to have results even if
the driver cannot associate any APs.
2004-01-19 05:25:43 +00:00
onoe
df98da69f8 Add support for FH phy, which will be used by awi driver.
Also some if_media constants to indicate operational mode are changed
to bitmasks to reduce diffs from NetBSD.
2004-01-15 08:44:27 +00:00
sam
b8570d5db4 Handle SIOCSIFMTU ioctl directly so we can apply 802.11-specific bounds.
Note that the min is actually constrained to IF_MINMTU by the if layer.
2004-01-13 06:22:55 +00:00
sam
189a9001bd Sync with netbsd:
o #ifdef _KERNEL the fallback definition for DLT_IEEE802_11_RADIO
o fix many comments
o rename antenna stuff and fix units/reference signal
o change IEEE80211_RADIOTAP_DBM_TX_POWER from unsigned 16-bit value
  to a signed 8-bit value
o change IEEE80211_RADIOTAP_FLAGS from 16 bits to 8 bits to simplify
  padding requirements
o drop IEEE80211_RADIOTAP_TIME
o change IEEE80211_RADIOTAP_ANTENNA from 16 bits to 8 bits
o drop IEEE80211_RADIOTAP_PAD
o add channel flag definitions for outside the kernel so radiotap
  doesn't depend on stuff in ieee80211*.h

Obtained from:	NetBSD
2003-12-28 06:57:28 +00:00
sam
5bfac52170 o insure the current channel is in a good state before starting an AP scan
o reject scan requests for a device that isn't marked up

This fixes a problem where requesting a scan before marking the device
up would cause a panic because the current channel was set to "any" (0xffff).
2003-11-13 05:23:58 +00:00
sam
02ea9f180f fix typo that broke AP scanning by BSSID
Submitted by:	Len Widra
2003-11-09 23:36:46 +00:00
green
932794c27c Fix a reversed suser(9) in SIOCG80211:IEEE80211_IOC_WEPKEY which prevents
root from reading the wireless card's WEP keys, but allows non-root.
2003-11-05 04:16:48 +00:00
brooks
f1e94c6f29 Replace the if_name and if_unit members of struct ifnet with new members
if_xname, if_dname, and if_dunit. if_xname is the name of the interface
and if_dname/unit are the driver name and instance.

This change paves the way for interface renaming and enhanced pseudo
device creation and configuration symantics.

Approved By:	re (in principle)
Reviewed By:	njl, imp
Tested On:	i386, amd64, sparc64
Obtained From:	NetBSD (if_xname)
2003-10-31 18:32:15 +00:00
sam
68dcd813b1 fix station mode breakage (repeat after me: "test every change, no
matter how small...")
2003-10-17 23:59:11 +00:00
sam
eefb2fc9e8 add statistics for all failures and/or abnormal events; still need
to add per-node statistics
2003-10-17 23:15:30 +00:00
sam
a6b5975f25 fixup debug msgs 2003-10-17 22:15:26 +00:00
sam
45942b2f20 include FH/DS parameters element in probe response frames 2003-10-17 22:09:20 +00:00
sam
23522eb855 correct comment 2003-10-17 21:56:42 +00:00
sam
98b46f244c o add capability to indicate if device receives all management frames
o use recv mgmt capability to decide if outbound frames should be
  discarded if no node table entry is present
2003-10-17 21:54:59 +00:00
sam
365e4629ed parameterize locking to improve portability and possible
change to different locking strategies
2003-10-17 21:41:52 +00:00
sam
04780f09b9 Try yet again to deal with timing out nodes. We cannot hold the
node lock while sending a management frame as this will potentially
result in a LOR with a driver lock.  This doesn't happen for the
Atheros driver but does for the wi driver.  Use a generation number
to help process each node once when scanning the node table and
drop the node lock if we need to timeout a node and send a frame.
2003-09-26 17:00:44 +00:00
sam
d39b84f6ea Correct rate set negotiation when operating as a station: if the
AP has basic rates that we do not support then ignore them instead
of marking the rate set in error.

This fixes an 11b station associating with an 11g/b AP.
2003-09-26 16:54:55 +00:00
sam
22bdcdfcee allocate node table entries with a specific malloc type 2003-09-26 16:52:12 +00:00
sam
19d2ca15c6 correct spelling of IEEE80211_IOC_RTSTHRESHOLD 2003-09-26 16:48:39 +00:00
sam
c9c933e78b Generalize the per-node RSSI data so drivers can do more interesting
things than record a single value.

o add a per-node method for returning the "current RSSI" for a node
o create a default method that returns ni_rssi which is the rssi for
  the last received frame
o use the per-node "get rssi" method to return data for the RID's
  submitted by wicontrol, et. al.

Loosely based on work by Tom Marshall <tommy@home.tig-grr.com> for MADWIFI.
2003-09-15 22:28:07 +00:00
sam
53c5407126 Change input handling to not expect drivers to filter short frames.
In particular, let drivers send up control frames so we can dispatch
them to bpf in monitor mode.

This is the first (small) step to adding more functionality such as
power save mode.
2003-09-15 19:38:29 +00:00
sam
3606409512 add definitions for various control frames and a minimum-sized frame that
we use to define IEEE80211_MIN_LEN; the minimal length for frames drivers
may pass up into the 802.11 layer
2003-09-15 19:36:34 +00:00
sam
73b49f3a66 Honor the short preamble capability/state flag when calculating the
capabilities for outbound management frames.  But beware of sending
this when operating on 5GHz channels; some 11a AP's reject association
requests if this bit is set in the capabilities listed.

Obtained from:	MADWIFI (with modifications)
2003-09-14 22:34:24 +00:00
sam
ecc9826d1b short preamble capability is not just for 11g; mark IEEE80211_F_SHPREAMBLE
regardless of the operating mode

Obtained from:	MADWIFI
2003-09-14 22:32:18 +00:00
sam
bdc819fefb Experimental bpf capture format for 802.11 devices. The link layer
type belongs in net/bpf.h but we keep it here for the moment.

P:
Submittep by:
Obtained from:	David Young <dyoung@pobox.com>
2003-09-05 22:19:32 +00:00
sam
0ff5af9151 o correct logic that checks frame size to decide if a cluaster is needed
o add an assertion to check the max possible packet size

Noticed by:	David Young <dyoung@pobox.com>
2003-09-01 02:55:09 +00:00
sam
1c1194250d MFp4 changes to fix locking issues and correct reference
count handling of station entries in hostap mode:

Input path:

o driver is now expected to find the node associated with the
  sender of a received frame; use ic_bss if none is located
o driver passes the (referenced) node into ieee80211_input for
  use within the wlan module and is responsible for cleaning up
  on return
o the antenna state is no longer passed up with each frame; this
  is now considered driver-private state and drivers are responsible
  for keeping it in the driver-private part of a node

Output path:

Revamp output path for management frames to eliminate redundant
locking that causes problems and to correct reference counting
bogosity that occurs when stations are timed out due to inactivity
(in AP mode).  On output the refcnt'd node is stashed in the pkthdr's
recvif field (yech) and retrieved by the driver.  This eliminates
an unref/ref scenario and related node table unlock/lock due to the
driver looking up the node.  This is particularly important when
stations are timed out as this causes a lock order reversal that
can result in a deadlock.  As a byproduct we also reduce the overhead
for sending management frames (minimal).  Additional fallout from
this is a change to ieee80211_encap to return a refcn't node for
tieing to the outbound frame.  Node refcnts are not reclaimed until
after a frame is completely processed (e.g. in the tx interrupt
handler).  This is especially important for timed out stations as
this deref will be the final one causing the node entry to be
reclaimed.

Additional semi-related changes:
o replace m_copym use with m_copypacket (optimization)
o add assert to verify ic_bss is never free'd during normal operation
o add comments explaining calling conventions by drivers for frames
  going in each direction
o remove extraneous code that "cannot be executed" (e.g. because
  pointers may never be null)
2003-08-19 22:17:04 +00:00
sam
af81e4b88b Delay creating ic_bss until after the super-class has a chance
to override the method pointers for manipulating nodes; this fixes
a problem where the ic_bss node was not being created properly
for the ath driver causing the driver to scribble on random memory.

Noticed by:	David Young <dyoung@pobox.com>
2003-08-13 22:09:44 +00:00
sam
e588332388 Use IEEE80211_RATE_MAXSIZE instead of IEEE80211_RATE_SIZE to validate the
rate set element id from an AP.  This allows stations to associate with
AP's that violate the 802.11 spec by sending >8 rates.  This corrects a
recent regression; older code did likewise.
2003-08-13 21:49:35 +00:00
sam
7629ee78c2 add monitor mode 2003-07-21 02:49:42 +00:00
sam
51c8bf1aeb o change ieee80211_new_state handling to use a proper method that drivers
override in their sub-class; this eliminates the hack of interpreting the
  EINPROGRESS return value to mean "don't do any of the normal work"
o correct active scanning so the first channel is only scanned once and so
  per-channel passive mode is properly honored
o expose 802.11 FSM state names so every driver doesn't keep a private copy
o eliminate node parameter to ieee80211_begin_scan; it was not being used
2003-07-20 21:36:08 +00:00
sam
c0ad98bb7c insure ic_bss always has a "valid" channel; avoids problems where users could
query the state of a card and find a null channel since allocating the node
left ni_chan zero
2003-06-29 20:13:38 +00:00
sam
709e58cfa7 use proper length to copy data for WI_RID_DESIRED_SSID (was smashing
ic_des_chan that immediately follows)
2003-06-29 20:12:17 +00:00
sam
1fb2cade2b add safeguard against (bogus) null channel parameter 2003-06-29 20:10:54 +00:00
sam
350cc1a8b5 revise copyright notices per discussion with Atsushi Onoe <onoe@sm.sony.co.jp> 2003-06-27 05:13:52 +00:00
sam
51235c32fb fix typo
Submitted by:	"Norman Diamond \(ITS\)" <n_diamond@its.jp>
2003-06-27 02:53:00 +00:00
sam
e8ff883d17 add comment 2003-06-26 22:11:19 +00:00
sam
c078152e6c fix tcpdump -y IEEE802_11; NBPFILTER was a holdover from netbsd compatibility 2003-06-25 17:42:36 +00:00
sam
505adc686a new 802.11 layer:
o code reorg (relative to old netbsd-derived code) for future growth
o drivers now specify available channels and rates and 802.11 layer handles
  almost all ifmedia actions
o multi-mode support for 11a/b/g devices
o 11g protocol additions (incomplete)
o new element id additions (for other than 11g)
o node/station table redone for proper locking and to eliminate driver
  incestuousness
o split device flags and capabilities to reduce confusion and provide room
  for expansion
o incomplete power management infrastructure (need to revisit)
o incomplete hooks for software retry
o more...
2003-06-23 16:55:01 +00:00