Commit Graph

12 Commits

Author SHA1 Message Date
Sam Leffler
c1225b52f6 Split crypto tx+rx key indices and add a key index -> node mapping table:
Crypto changes:
o change driver/net80211 key_alloc api to return tx+rx key indices; a
  driver can leave the rx key index set to IEEE80211_KEYIX_NONE or set
  it to be the same as the tx key index (the former disables use of
  the key index in building the keyix->node mapping table and is the
  default setup for naive drivers by null_key_alloc)
o add cs_max_keyid to crypto state to specify the max h/w key index a
  driver will return; this is used to allocate the key index mapping
  table and to bounds check table loookups
o while here introduce ieee80211_keyix (finally) for the type of a h/w
  key index
o change crypto notifiers for rx failures to pass the rx key index up
  as appropriate (michael failure, replay, etc.)

Node table changes:
o optionally allocate a h/w key index to node mapping table for the
  station table using the max key index setting supplied by drivers
  (note the scan table does not get a map)
o defer node table allocation to lateattach so the driver has a chance
  to set the max key id to size the key index map
o while here also defer the aid bitmap allocation
o add new ieee80211_find_rxnode_withkey api to find a sta/node entry
  on frame receive with an optional h/w key index to use in checking
  mapping table; also updates the map if it does a hash lookup and the
  found node has a rx key index set in the unicast key; note this work
  is separated from the old ieee80211_find_rxnode call so drivers do
  not need to be aware of the new mechanism
o move some node table manipulation under the node table lock to close
  a race on node delete
o add ieee80211_node_delucastkey to do the dirty work of deleting
  unicast key state for a node (deletes any key and handles key map
  references)

Ath driver:
o nuke private sc_keyixmap mechansim in favor of net80211 support
o update key alloc api

These changes close several race conditions for the ath driver operating
in ap mode.  Other drivers should see no change.  Station mode operation
for ath no longer uses the key index map but performance tests show no
noticeable change and this will be fixed when the scan table is eliminated
with the new scanning support.

Tested by:	Michal Mertl, avatar, others
Reviewed by:	avatar, others
MFC after:	2 weeks
2005-08-08 18:46:36 +00:00
Sam Leffler
a92c6eb0f1 don't include 802.3 header in min frame length calculation as it may
not be present for a frag; fixes problem with small (fragmented) frames
being dropped

Obtained from:	Atheros
MFC after:	3 days
2005-07-22 17:42:08 +00:00
Sam Leffler
5c8a7b1b05 Change default key allocation method to do the right thing for
legacy parts (i.e. those that have 4 global key slots).  We
blindly assign unicast keys to key slot 0.  Devices that need
alternate allocation logic must override this method.

Reviewed by:	avatar
Approved by:	re (scottl)
2005-07-09 23:15:30 +00:00
Sam Leffler
2cc12aded0 o fix wpa w/ wme: don't strip the QoS header on recv as tkip requires
it; instead pass the space occupied by the header down into the
  crypto modules (except in the demic case which needs it only when
  doing int in s/w)
o while here fix defrag to strip the header from 2nd and later frames
o teach decap code how to handle 4-address frames
2005-06-10 16:11:24 +00:00
Sam Leffler
dd70e17b12 Revise crypto api lightly to improve group key handling:
o don't pre-assign key index to the global key table entries so device
  has a chance to decide what to use
o make ieee80211_crypto_newkey take the desired flags as an argument
  instead of wacking the key structure directly; this eliminates a
  bunch of code warts
o add a new flag IEEE80211_KEY_GROUP to indicate a key is a WPA Group
  key so devices don't need to guess (temporarily add this flag in the
  ioctl code until we can get wpa_supplicant+hostapd updated)
o shuffle IEEE80211_KEY_* bits to move flags used internally to the high
  nibble of the flags word

Reviewed by:	Tai-hwa Liang
2005-04-12 17:55:13 +00:00
Sam Leffler
1f1d781074 bump copyright for 2005 2004-12-31 22:42:38 +00:00
Sam Leffler
7432b7cc84 const'ify ivp reference 2004-12-31 20:44:15 +00:00
Sam Leffler
fc508e8e4f add/fixup debug msgs 2004-12-31 20:42:51 +00:00
Sam Leffler
8a1b9b6ad4 Update 802.11 support; too much new functionality to fully describe
here but it includes completed 802.11g, WPA, 802.11i, 802.1x, WME/WMM,
AP-side power-save, crypto plugin framework, authenticator plugin framework,
and access control plugin frameowrk.
2004-12-08 17:26:47 +00:00
Sam Leffler
1be50176db 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 Leffler
7535e66acd revise copyright notices per discussion with Atsushi Onoe <onoe@sm.sony.co.jp> 2003-06-27 05:13:52 +00:00
Sam Leffler
1a1e1d2157 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