* nfqueue/ipq difference
@ 2006-10-17 22:10 robert
2006-10-20 10:02 ` Patrick McHardy
0 siblings, 1 reply; 2+ messages in thread
From: robert @ 2006-10-17 22:10 UTC (permalink / raw)
To: netfilter-devel
As I was migrating to NFQUEUE, I noticed a small difference. If you
are polling on an IPQ filedescriptor, then the error bit is set if
the queue runs out of buffer space. In NFQUEUE, the error bit is
never set, but after doing a read, there is an error. This error bit
is relatively important and in most applications would want to handle
a read since both IPQ and NFQUEUE will not queue any new packets
until the entire buffer is flushed. (at least, this is the behavior
that I am seeing).
If anyone is interested, i could post two small test programs that
illustrate this behavior. (not sure if this would be considered a bug).
cheers,
robert
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: nfqueue/ipq difference
2006-10-17 22:10 nfqueue/ipq difference robert
@ 2006-10-20 10:02 ` Patrick McHardy
0 siblings, 0 replies; 2+ messages in thread
From: Patrick McHardy @ 2006-10-20 10:02 UTC (permalink / raw)
To: robert; +Cc: netfilter-devel
robert wrote:
> As I was migrating to NFQUEUE, I noticed a small difference. If you
> are polling on an IPQ filedescriptor, then the error bit is set if the
> queue runs out of buffer space. In NFQUEUE, the error bit is never
> set, but after doing a read, there is an error. This error bit is
> relatively important and in most applications would want to handle a
> read since both IPQ and NFQUEUE will not queue any new packets until
> the entire buffer is flushed. (at least, this is the behavior that I
> am seeing).
>
> If anyone is interested, i could post two small test programs that
> illustrate this behavior. (not sure if this would be considered a bug).
Please, I can not see any difference between ipq and nfnetlink_queue.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2006-10-17 22:10 nfqueue/ipq difference robert
2006-10-20 10:02 ` Patrick McHardy
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