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Always lookup/create a node table entry for Beacons and Probe 

Responses.  Ad hoc mode uses these entries to track network peers.
This provides passive-scan information for the current channel in
infrastructure mode (XXX really should keep it in a different
table).  Host APs will someday use these entries to track APs in
the same ESS for AP-to-AP bridging.
This commit is contained in:
dyoung 2004-07-28 08:11:03 +00:00
parent 73cc67cb1d
commit 1d27a29121
1 changed files with 17 additions and 7 deletions
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24
sys/net80211/ieee80211_node.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: ieee80211_node.c,v 1.28 2004/07/26 16:31:47 mycroft Exp $ */
/* $NetBSD: ieee80211_node.c,v 1.29 2004/07/28 08:11:03 dyoung Exp $ */
/*-
* Copyright (c) 2001 Atsushi Onoe
* Copyright (c) 2002-2004 Sam Leffler, Errno Consulting
@ -35,7 +35,7 @@
#ifdef __FreeBSD__
__FBSDID("$FreeBSD: src/sys/net80211/ieee80211_node.c,v 1.22 2004/04/05 04:15:55 sam Exp $");
#else
__KERNEL_RCSID(0, "$NetBSD: ieee80211_node.c,v 1.28 2004/07/26 16:31:47 mycroft Exp $");
__KERNEL_RCSID(0, "$NetBSD: ieee80211_node.c,v 1.29 2004/07/28 08:11:03 dyoung Exp $");
#endif
#include "opt_inet.h"
@ -639,15 +639,17 @@ ieee80211_find_txnode(struct ieee80211com *ic, u_int8_t *macaddr)
}
/*
* For some types of packet and for some operating modes, it is
* desirable to process a Rx packet using its sender's node-record
* instead of the BSS record, when that is possible.
* It is usually desirable to process a Rx packet using its sender's
* node-record instead of the BSS record.
*
* - AP mode: keep a node-record for every authenticated/associated
* station *in the BSS*. For future use, we also track neighboring
* APs, since they might belong to the same ESSID.
* APs, since they might belong to the same ESS. APs in the same
* ESS may bridge packets to each other, forming a Wireless
* Distribution System (WDS).
*
* - IBSS mode: keep a node-record for every station *in the BSS*.
* Also track neighboring stations by their beacons/probe responses.
*
* - monitor mode: keep a node-record for every sender, regardless
* of BSS.
@ -680,7 +682,15 @@ ieee80211_needs_rxnode(struct ieee80211com *ic, struct ieee80211_frame *wh,
IEEE80211_FC0_SUBTYPE_RTS;
case IEEE80211_FC0_TYPE_MGT:
*bssid = wh->i_addr3;
rc = IEEE80211_ADDR_EQ(*bssid, bss->ni_bssid);
switch (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) {
case IEEE80211_FC0_SUBTYPE_BEACON:
case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
rc = 1;
break;
default:
rc = IEEE80211_ADDR_EQ(*bssid, bss->ni_bssid);
break;
}
break;
case IEEE80211_FC0_TYPE_DATA:
switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) {