On 28/06/18 14:09, Nicolas Tsiogkas wrote:
Hi,
I have observed a weird behaviour while setting the BIOCSRTIMEOUT for
a bpf.
When setting it to low values (less than a second) as it can be seen
below the bpf is actually blocking instead of waiting and continuing.
struct timeval timeout;
timeout.tv_sec = 0;
timeout.tv_usec = 1;
if (ioctl(*bpf, BIOCSRTIMEOUT, &timeout) == -1) {
perror("BIOCSRTIMEOUT");
return 0;
}
This was working with the libbsd 4.11 branch. Is this a known bug?
No, we use the bpf with libpcap on the master. You have to debug this.
In addition the bpf is not receiving/reading anything incoming while
with wireshark I can confirm that there are things on the wire and the
bpf is in promiscuous mode. Still this was working on the 4.11 branch.
Any idea on how to debug this?
I would set a break point to the network interface receive function and
then follow the path of the Ethernet frame.
Thanks in advance.
Cheers,
Niko
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