(mail@janderson.ca): remove ieee80211_ibss_merge's TSFT argument.
Do the TSFT comparison in the drivers (ath, atw). Remove a lot of
extraneous debug statements from ieee80211_ibss_merge.
Set the ieee80211_node's state to IEEE80211_STA_BSS after it's been
copied to the ic_bss, not before.
In struct ieee80211_node, make the ni_tstamp field a union of a
uint64_t and the 8 TSF octets so that it's easier to compare a
neighbor's TSF with the local TSF.
Log IBSS merges (Greg Troxel's suggestion). Also log IBSS creation.
These are rare and important events that deserve to be logged.
are at the end of the node queue. Change the reference-counting
discipline: ni->ni_refcnt indicates how many times net80211 has
granted ni to the driver. Every node in the table with ni_refcnt=0
is eligible to be garbage-collected. The mere presence of a node
in the table does not any longer indicate its auth/assoc state;
nodes have a ni_state variable, now. A sysctl,
net.link.ieee80211.maxnodecache, controls the maximum LRU cache
size.
While I am here, patch ieee80211_find_node_for_beacon to do a "best
match" by bssid/ssid/channel, not a "perfect match." This keeps
net80211 from caching duplicate nodes in the table.
ieee80211_input():
* Do not discard management frames in station mode just because they have
the wrong BSSID.
* Do not discard beacons in station and host-AP mode when not scanning.
* Some minor rearrangement. Update node statistics even if the packet is
rejected.
ieee80211_recv_mgmt():
* Accept probe responses and beacons in station and host-AP even when not
scanning.
* Do not immediately free the node created by a beacon or probe response.
XXX Should I check BSSIDs more carefully in ieee80211_recv_mgmt() --
specifically for ASSOC_RESP, REASSOC_RESP, AUTH, DEAUTH and DISASSOC?
Fix a problem with APs that advertise multiple SSIDs:
Change the footprint of ieee80211_find_node_with_channel() to take a SSID as
well, and, if not empty, compared it with the existing nodes. This causes
us to allocate multiple nodes for the same AP. Without this we were only
leaving one SSID in the node table, which might not be the desired one, and
so the interface would fail to fully initialize. (Reported by he@ with a
Cisco 350 AP.)
Abstract some of the node management code into separate functions, and use them
throughout, plugging memory leaks.
Allocate the AID allocation map dynamically.
802.11 drivers will use ieee80211_find_rxnode to match each received
packet with the ieee80211_node belonging to the sender. The driver
will use the ieee80211_node to track the sender's RSSI and other
statistics for, e.g., rate adaptation.
ieee80211_find_rxnode "fakes-up" missing ieee80211_nodes in IBSS
mode and in ad-hoc demo mode when it is appropriate. See the comments
in the source.
Also add ieee80211_find_txnode, which looks up the ieee80211_node
belonging to a MAC destination. ieee80211_find_txnode will also
fake-up missing nodes in IBSS/ad-hoc demo mode.
In ieee80211_encap, use ieee80211_find_txnode. This fixes the bug
in ad hoc packet-transmission reported by Greg Troxel, Urban Boquist,
and Kurt Schreiner.
* Add Kevin Lahey's power-saving support from the old 802.11 layer
* Add my stop-gap rate-selection routine, ieee80211_get_rate,
from the old 802.11 layer
* Also from the old 802.11 layer: factor ieee80211_match_bss out
of ieee80211_end_scan, since atw(4) uses it for IBSS merges.
striving to keep the diffs short and simple.
* Replace FreeBSDisms (e.g. struct arpcom) with conditionally-compiled
NetBSDism (struct ethercom).
* Add compatibility shims in ieee80211_compat.*: provide NetBSD with
if_printf, for example.
* Convert FreeBSD node mutex uses to generic node critical-section
protection (ieee80211_node_critsect_begin, _end), replace
FreeBSD atomic arithmetic with generic alternative, and implement
generics in NetBSD
* Provide NetBSD-style 802.11 ioctls
* Style nits
dyoung