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disallow re-associate with a slot time mismatch

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Obtained from:	Atheros
MFC after:	2 weeks
This commit is contained in:
Sam Leffler 2007-03-11 06:52:22 +00:00
parent f597faba37
commit 9672f0230f
1 changed files with 27 additions and 8 deletions
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35
sys/net80211/ieee80211_input.c
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@ -1773,6 +1773,21 @@ ieee80211_deliver_l2uf(struct ieee80211_node *ni)
ieee80211_deliver_data(ic, ni, m);
}
static void
capinfomismatch(struct ieee80211_node *ni, const struct ieee80211_frame *wh,
int reassoc, int resp, const char *tag, int capinfo)
{
struct ieee80211com *ic = ni->ni_ic;
IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY,
"[%s] deny %s request, %s mismatch 0x%x\n",
ether_sprintf(wh->i_addr2),
reassoc ? "reassoc" : "assoc", tag, capinfo);
IEEE80211_SEND_MGMT(ic, ni, resp, IEEE80211_STATUS_CAPINFO);
ieee80211_node_leave(ic, ni);
ic->ic_stats.is_rx_assoc_capmismatch++;
}
void
ieee80211_recv_mgmt(struct ieee80211com *ic, struct mbuf *m0,
struct ieee80211_node *ni,
@ -2346,14 +2361,18 @@ ieee80211_recv_mgmt(struct ieee80211com *ic, struct mbuf *m0,
}
/* NB: 802.11 spec says to ignore station's privacy bit */
if ((capinfo & IEEE80211_CAPINFO_ESS) == 0) {
IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY,
"[%s] deny %s request, capability mismatch 0x%x\n",
ether_sprintf(wh->i_addr2),
reassoc ? "reassoc" : "assoc", capinfo);
IEEE80211_SEND_MGMT(ic, ni, resp,
IEEE80211_STATUS_CAPINFO);
ieee80211_node_leave(ic, ni);
ic->ic_stats.is_rx_assoc_capmismatch++;
capinfomismatch(ni, wh, reassoc, resp,
"capability", capinfo);
return;
}
/*
* Disallow re-associate w/ invalid slot time setting.
*/
if (ni->ni_associd != 0 &&
ic->ic_curmode == IEEE80211_MODE_11G &&
((ni->ni_capinfo ^ capinfo) & IEEE80211_CAPINFO_SHORT_SLOTTIME)) {
capinfomismatch(ni, wh, reassoc, resp,
"slot time", capinfo);
return;
}
rate = ieee80211_setup_rates(ni, rates, xrates,