Hi,
well, that is what i wanted to understand. These are the struct
that I'm using to compose the rediotap header:
struct ieee80211_radiotap_header {
u_int8_t it_version;
u_int8_t it_pad;
u_int16_t it_len;
u_int32_t it_present;
} __attribute__((__packed__));
struct click_radiotap_header {
struct ieee80211_radiotap_header wt_ihdr;
u_int8_t wt_rate;
u_int8_t wt_txpower;
u_int8_t wt_rts_retries;
u_int8_t wt_data_retries;
};
The flags are set in order to take into account the fields that I
specify. But i do not know at which point the frame are
dropped.
R.
On 05/07/2010 06:35 PM, Gábor Stefanik wrote:
Hi!
Are you sure it is not your injector that is having alignment issues?
AFAIK the radiotap parser explicitly uses endianness-aware function
everywhere.
On Fri, May 7, 2010 at 6:13 PM, Roberto Riggio
<roberto.riggio@xxxxxxxxxxxxxx> wrote:
Hi,
I'm writing an application to inject traffic over a wireless interface. This
app
is working fine on an x86 machine. However if i compile the same app for
an arm platform, no frame are sent over the wireless interface (ath9k).
I'm guessing that this is because of some alignment issues but i cannot
track
the piece of code that is actually parsing the frame. I've found the
__ieee80211_parse_tx_radiotap in net/mac80211/tx.c function, but it is
not called when i try to inject some traffic, so the frame are dropped
before that.
Any hints?
Thanks
R.
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