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Add current transmit parameters for fixed rate handling so drivers

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don't duplicate this.  These are setup according to the role of the
node--the bss node for ap and adhoc modes need to use parameters
that are the least common denomimator of all nodes in the bss;
otherwise we are setting up params for a station joining a bss and
we select those according to the capabilities of the station.

This stuff needs more work as we do extra work due to having setup
in common code paths shared by nodes using both roles.
This commit is contained in:
Sam Leffler 2008-09-21 23:25:33 +00:00
parent 3c1a492e4a
commit 01a03542b1
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=183251
2 changed files with 46 additions and 0 deletions
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45
sys/net80211/ieee80211_node.c
View File

@ -201,6 +201,29 @@ ieee80211_node_unauthorize(struct ieee80211_node *ni)
ni->ni_inact = ni->ni_inact_reload;
}
/*
* Fix tx parameters for a node according to ``association state''.
*/
static void
node_setuptxparms(struct ieee80211_node *ni)
{
struct ieee80211vap *vap = ni->ni_vap;
if (ni->ni_flags & IEEE80211_NODE_HT) {
if (IEEE80211_IS_CHAN_5GHZ(ni->ni_chan))
ni->ni_txparms = &vap->iv_txparms[IEEE80211_MODE_11NA];
else
ni->ni_txparms = &vap->iv_txparms[IEEE80211_MODE_11NG];
} else { /* legacy rate handling */
if (IEEE80211_IS_CHAN_A(ni->ni_chan))
ni->ni_txparms = &vap->iv_txparms[IEEE80211_MODE_11A];
else if (ni->ni_flags & IEEE80211_NODE_ERP)
ni->ni_txparms = &vap->iv_txparms[IEEE80211_MODE_11G];
else
ni->ni_txparms = &vap->iv_txparms[IEEE80211_MODE_11B];
}
}
/*
* Set/change the channel. The rate set is also updated as
* to insure a consistent view by drivers.
@ -211,10 +234,13 @@ ieee80211_node_set_chan(struct ieee80211_node *ni,
struct ieee80211_channel *chan)
{
struct ieee80211com *ic = ni->ni_ic;
struct ieee80211vap *vap = ni->ni_vap;
enum ieee80211_phymode mode;
KASSERT(chan != IEEE80211_CHAN_ANYC, ("no channel"));
ni->ni_chan = chan;
mode = ieee80211_chan2mode(chan);
if (IEEE80211_IS_CHAN_HT(chan)) {
/*
* XXX Gotta be careful here; the rate set returned by
@ -224,7 +250,22 @@ ieee80211_node_set_chan(struct ieee80211_node *ni,
* HT rate set in ni_htrates.
*/
ni->ni_htrates = *ieee80211_get_suphtrates(ic, chan);
/*
* Setup bss tx parameters based on operating mode. We
* use legacy rates when operating in a mixed HT+non-HT bss
* and non-ERP rates in 11g for mixed ERP+non-ERP bss.
*/
if (mode == IEEE80211_MODE_11NA &&
(vap->iv_flags_ext & IEEE80211_FEXT_PUREN) == 0)
mode = IEEE80211_MODE_11A;
else if (mode == IEEE80211_MODE_11NG &&
(vap->iv_flags_ext & IEEE80211_FEXT_PUREN) == 0)
mode = IEEE80211_MODE_11G;
if (mode == IEEE80211_MODE_11G &&
(vap->iv_flags & IEEE80211_F_PUREG) == 0)
mode = IEEE80211_MODE_11B;
}
ni->ni_txparms = &vap->iv_txparms[mode];
ni->ni_rates = *ieee80211_get_suprates(ic, chan);
}
@ -965,6 +1006,7 @@ ieee80211_alloc_node(struct ieee80211_node_table *nt,
ni->ni_chan = IEEE80211_CHAN_ANYC;
ni->ni_authmode = IEEE80211_AUTH_OPEN;
ni->ni_txpower = ic->ic_txpowlimit; /* max power */
ni->ni_txparms = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE);
ni->ni_avgrssi = IEEE80211_RSSI_DUMMY_MARKER;
ni->ni_inact_reload = nt->nt_inact_init;
@ -1238,6 +1280,7 @@ ieee80211_fakeup_adhoc_node(struct ieee80211vap *vap,
if (vap->iv_flags & IEEE80211_F_FF)
ni->ni_flags |= IEEE80211_NODE_FF;
}
node_setuptxparms(ni);
if (ic->ic_newassoc != NULL)
ic->ic_newassoc(ni, 1);
/* XXX not right for 802.1x/WPA */
@ -1295,6 +1338,7 @@ ieee80211_add_neighbor(struct ieee80211vap *vap,
struct ieee80211com *ic = vap->iv_ic;
ieee80211_init_neighbor(ni, wh, sp);
node_setuptxparms(ni);
if (ic->ic_newassoc != NULL)
ic->ic_newassoc(ni, 1);
/* XXX not right for 802.1x/WPA */
@ -2235,6 +2279,7 @@ ieee80211_node_join(struct ieee80211_node *ni, int resp)
", turbo" : ""
);
node_setuptxparms(ni);
/* give driver a chance to setup state like ni_txrate */
if (ic->ic_newassoc != NULL)
ic->ic_newassoc(ni, newassoc);

1
sys/net80211/ieee80211_node.h
View File

@ -125,6 +125,7 @@ struct ieee80211_node {
uint16_t ni_associd; /* assoc response */
uint16_t ni_txpower; /* current transmit power */
uint16_t ni_vlan; /* vlan tag */
const struct ieee80211_txparam *ni_txparms;
uint32_t ni_jointime; /* time of join (secs) */
uint32_t *ni_challenge; /* shared-key challenge */
struct ieee80211_ies ni_ies; /* captured ie's */