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wifi: filter out loopback traffic from myself

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broadcast traffic was received back on the wire causing
duplicate address detection to break with dmat proy as
the rewritten broadcasts where observable.

the fix is to just ignore packets from ourselfs received
from the air. devether already handles loopback.
This commit is contained in:
cinap_lenrek 2018-01-12 08:01:15 +01:00
parent d682a6cb38
commit 2088f8c991
1 changed files with 2 additions and 0 deletions
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2
sys/src/9/pc/wifi.c
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@ -100,6 +100,8 @@ wifiiq(Wifi *wifi, Block *b)
hdrlen = wifihdrlen(w);
if(BLEN(b) < hdrlen)
goto drop;
if(memcmp(srcaddr(w), wifi->ether->ea, Eaddrlen) == 0)
goto drop;
if(w->fc[1] & 0x40){
/* encrypted */
qpass(wifi->iq, b);