Michael Wu wrote:
Hi Michael -
+ rthdr->hdr.it_present =
+ cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) ||
+ (1 << IEEE80211_RADIOTAP_RATE) ||
+ (1 << IEEE80211_RADIOTAP_CHANNEL) ||
+ (1 << IEEE80211_RADIOTAP_DB_ANTSIGNAL));
These were the wrong kind of OR operator as well.
test.c:
#include <stdio.h>
int main() { printf("%d %d\n", 1 || 2, 1 | 2); return 0; }
$ gcc test.c
$ ./a.out
1 3
After fixing that it now works with tcpdump!
# tcpdump -i mon0 -s0 -X ether host 13:22:33:44:55:66
09:54:58.579725 1.0 Mb/s 2417 MHz (0x0480) 100dB signal
13:22:33:44:55:66 (oui Unknown) Unknown SSAP 0x60 > 13:22:33:44:55:66
(oui Unknown) Unknown DSAP 0x50 Unnumbered, ua, Flags [Command], length 38
0x0000: 5061 636b 6574 7370 616d 6d65 7220 6272 Packetspammer.br
0x0010: 6f61 6463 6173 7420 7061 636b 6574 2031 oadcast.packet.1
0x0020: 3639 72b1 0066 69r..f
09:54:58.679197 54.0 Mb/s 2417 MHz (0x0480) 100dB signal
13:22:33:44:55:66 (oui Unknown) Unknown SSAP 0x60 > 13:22:33:44:55:66
(oui Unknown) Unknown DSAP 0x50 Unnumbered, ua, Flags [Command], length 38
0x0000: 5061 636b 6574 7370 616d 6d65 7220 6272 Packetspammer.br
0x0010: 6f61 6463 6173 7420 7061 636b 6574 2031 oadcast.packet.1
0x0020: 3730 c01d 92cd 70....
Note the CRC appears, I guess it's okay. With zd1211rw-mac80211 as it
is, rx strength always appears as 100dB: it comes from
ieee80211_rx_status.ssi. 1Mbps injection is working as well since a
couple of tries ago on my patch.
-Andy
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