FIONBIO support in freebsd for bpf
Christian Peron
csjp at sqrt.ca
Wed Apr 27 01:49:57 UTC 2016
Actually, upon inspection of the code, it appears that ioctl(fd, FIONBIO, ..); works as expected. This ioctl cmd appears to be handled further up the stack…
> On Apr 26, 2016, at 8:31 PM, Christian Peron <csjp at sqrt.ca> wrote:
>
> It is supported. If you want to put the descriptor into non-blocking mode, open it up with
> the device with the O_NONBLOCK flag specified. It probably wouldn't be too difficult to implement
> this via ioctl(FIONBIO) but I would need to look at it. Not certain why it can't be done using this
> method.
>
> Hope this helps.
>
> On Tue, Apr 26, 2016 at 07:22:20PM -0400, dayanidhi sreenivasan wrote:
>> Hi Guys,
>> Can somebody tell me why there is no support for non blocking IO for bpf yet?
>>
>> static int
>> bpfioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags,
>> struct thread *td)
>> {
>>
>> ......
>>
>> case FIONBIO: /* Non-blocking I/O */
>> break;
>>
>> }
>>
>> Thanks
>> Daya
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