Mailing List Archive: Sending using pfring

Sending using pfring_send()

Jul 8, 2019, 8:58 AM

Post #1 of 3 (1047 views)

Hi,

I Just did ..

pfring_open("eth0, eth1"...)..OK

pfring_set_direction(rx_and_tx_direction) .. OK (not sure if I actually needs this one)
pfring_set_socket_mode(send_and_recv_mode) ..OK

pfring_enable_ring() .. OK

pfring_recv(blocking) .. I'm getting packets from the interfaces

However,

When I try to send data using pfring_send() I'm getting -1.

Note that my little test is actually sending the same packet that was received from pfring_recv()

Not very smart but its just a test :)

Kernel module parameters : min_num_slots=65536 enable_tx_capture=0

What did I do wrong ?

And if it was sending successfully, through which interface would it be sending from?

Since I was open multiple interfaces using pfring_open()

10x

Eitan.

Re: Sending using pfring_send() [ In reply to ]

cardigliano at ntop

Jul 8, 2019, 10:05 AM

Post #2 of 3 (1047 views)

Permalink

Hi Eitan
please note that you are opening 2 interfaces with pfring_open,
it seems that pfring_send() should send traffic to a single interface,
what is the expected behaviour in your application?

Alfredo

> On 8 Jul 2019, at 17:58, Eitan Michaelson <eitanm@me.com> wrote:
>
> Hi,
>
> I Just did ..
>
> pfring_open("eth0, eth1"...)..OK
> pfring_set_direction(rx_and_tx_direction) .. OK (not sure if I actually needs this one)
> pfring_set_socket_mode(send_and_recv_mode) ..OK
> pfring_enable_ring() .. OK
> pfring_recv(blocking) .. I'm getting packets from the interfaces
>
> However,
> When I try to send data using pfring_send() I'm getting -1.
> Note that my little test is actually sending the same packet that was received from pfring_recv()
> Not very smart but its just a test :)
> Kernel module parameters : min_num_slots=65536 enable_tx_capture=0
> What did I do wrong ?
>
> And if it was sending successfully, through which interface would it be sending from?
> Since I was open multiple interfaces using pfring_open()
>
> 10x
> Eitan.
>
>
>
>
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