Re: bridging with can-gw

[Kurt Van Dijck <kurt.van.dijck@eia.be>]

On Thu, Jan 12, 2012 at 07:08:21PM +0100, Oliver Hartkopp wrote:
> On 12.01.2012 16:23, Wolfgang wrote:
> 
> > is it possible when I create a promiscuous socket with 
> > ...
> > 
> > static struct {
> > 	struct sockaddr_can src;
> > 	int pkt_len;
> > } ss = {
> > 	.pkt_len = 1024,
> > 	.src.can_addr.j1939 = {
> > 		.name = J1939_NO_NAME,
> > 		.addr = J1939_NO_ADDR,
> > 		.pgn = J1939_NO_PGN,
> > 	},
> > };
> > ....
> > addr.can_ifindex = ss.src.can_ifindex;
> > ...
> > 
> > and then receive a msg with recvfrom and  send that msg with sendto to tell 
> > the promiscuous socket to ignore the send msg. That the promiscuous socket only
> > receives 'extern' messages. I am totally floored, or am I on the wrong track?
> 
> 
> Hello Wolfgang,
> 
> as you are always writing about the bridging of J1939 frames - what does this
> mean on the bus?
> 
> Do you only bridge single frames?

The idea has crossed my mind also that when only single frames are bridged,
a raw cangw may suit the need.
A cangw setup _may_ not suit when transport protocol comes in place...
> 
Kurt