From 8d271549cdc06d7c1cbc8496261be118e90f5e24 Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@gmx.de>
Date: Mon, 11 Feb 2013 16:02:16 +0100
Subject: wifi: filter SNAP ethernet orgcode only

---
 sys/src/9/pc/wifi.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/sys/src/9/pc/wifi.c b/sys/src/9/pc/wifi.c
index cc880ac49..0aef25d68 100644
--- a/sys/src/9/pc/wifi.c
+++ b/sys/src/9/pc/wifi.c
@@ -63,9 +63,13 @@ wifiiq(Wifi *wifi, Block *b)
 		default:
 			goto drop;
 		}
-		if(BLEN(b) < SNAPHDRSIZE || b->rp[0] != 0xAA || b->rp[1] != 0xAA || b->rp[2] != 0x03)
+		if(BLEN(b) < SNAPHDRSIZE)
 			break;
 		memmove(&s, b->rp, SNAPHDRSIZE);
+		if(s.dsap != 0xAA || s.ssap != 0xAA || s.control != 3)
+			break;
+		if(s.orgcode[0] != 0 || s.orgcode[1] != 0 || s.orgcode[2] != 0)
+			break;
 		b->rp += SNAPHDRSIZE-ETHERHDRSIZE;
 		e = (Etherpkt*)b->rp;
 		switch(w.fc[1] & 0x03){
-- 
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