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Honor the short preamble capability/state flag when calculating the

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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)
This commit is contained in:
Sam Leffler 2003-09-14 22:34:24 +00:00
parent a0efa60dc9
commit 4f2e09c4b2
1 changed files with 12 additions and 1 deletions
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13
sys/net80211/ieee80211_output.c
View file

@ -376,6 +376,9 @@ ieee80211_send_mgmt(struct ieee80211com *ic, struct ieee80211_node *ni,
capinfo = IEEE80211_CAPINFO_ESS;
if (ic->ic_flags & IEEE80211_F_WEPON)
capinfo |= IEEE80211_CAPINFO_PRIVACY;
if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
IEEE80211_IS_CHAN_2GHZ(ni->ni_chan))
capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE;
*(u_int16_t *)frm = htole16(capinfo);
frm += 2;
@ -457,7 +460,12 @@ ieee80211_send_mgmt(struct ieee80211com *ic, struct ieee80211_node *ni,
capinfo |= IEEE80211_CAPINFO_ESS;
if (ic->ic_flags & IEEE80211_F_WEPON)
capinfo |= IEEE80211_CAPINFO_PRIVACY;
if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
/*
* NB: Some 11a AP's reject the request when
* short premable is set.
*/
if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
IEEE80211_IS_CHAN_2GHZ(ni->ni_chan))
capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE;
if (ic->ic_flags & IEEE80211_F_SHSLOT)
capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME;
@ -504,6 +512,9 @@ ieee80211_send_mgmt(struct ieee80211com *ic, struct ieee80211_node *ni,
capinfo = IEEE80211_CAPINFO_ESS;
if (ic->ic_flags & IEEE80211_F_WEPON)
capinfo |= IEEE80211_CAPINFO_PRIVACY;
if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
IEEE80211_IS_CHAN_2GHZ(ni->ni_chan))
capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE;
*(u_int16_t *)frm = htole16(capinfo);
frm += 2;