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wifi: signal ap deassociation to aux/wpa with a zero length read.

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aux/wpa needs to reset its reply counter on deassociation to
properly restart key negotiation. we signal this with a zero
length read on the connections filtering for eapol protocol.
This commit is contained in:
cinap_lenrek 2013-06-24 22:47:07 +02:00
parent 5c0106b7cf
commit 4da4785412
1 changed files with 20 additions and 0 deletions
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20
sys/src/9/pc/wifi.c
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@ -346,6 +346,25 @@ recvbeacon(Wifi *, Wnode *wn, uchar *d, int len)
}
}
/* notify aux/wpa with a zero length write that we got deassociated from the ap */
static void
wifideassoc(Wifi *wifi)
{
Ether *ether;
Netfile *f;
int i;
ether = wifi->ether;
for(i=0; i<ether->nfile; i++){
f = ether->f[i];
if(f == nil || f->in == nil || f->inuse == 0 || f->type != 0x888e)
continue;
if(wifi->debug)
print("#%d: wifideassoc: %#p\n", ether->ctlrno, f);
qwrite(f->in, 0, 0);
}
}
/* check if a node qualifies as our bss matching bssid and essid */
static int
goodbss(Wifi *wifi, Wnode *wn)
@ -429,6 +448,7 @@ wifiproc(void *arg)
memset(wn->rxkey, 0, sizeof(wn->rxkey));
memset(wn->txkey, 0, sizeof(wn->txkey));
wn->aid = 0;
wifideassoc(wifi);
sendauth(wifi, wn);
break;
}