I am sorry, but I am trying not to use extracted flow. I want to use this information before it goes to EMC.
On Sat, Feb 16, 2019, 03:44 Ben Pfaff <[email protected]> wrote: > On Fri, Feb 15, 2019 at 03:48:22PM +0800, Krish wrote: > > Hi > > > > I want to store tcp_src, dst port in a variable. > > This is what I am doing: > > 1. Retrieve packet from dp_packet_batch one by one. > > 2. Retrieving field values by extracting packets headers: > > > > struct ip_header *ip = dp_packet_l3(packet); > > nw_proto = ip->ip_proto; > > if(nw_proto == 6) > > { > > struct tcp_header *th = dp_packet_l4(packet); > > // The following are the 2 different ways I am trying to print the > tcp_src. > > I have tried it 1 and 2 separately not at the same time. > > //1 . Ovs crash at the below statement > > uint16_t src = (uint16_t) ntohs(th->tcp_src); > > VLOG_DBG( "tcp_src ---> %d", src ); > > //2. When I enable logging ovs crashes at this point > > VLOG_DBG( "tcp_src ---> %d", ntohs(th->tcp_src) ); > > > > > > } > > > > Can anyone please help how to store tcp_src port value in a variable and > > print it in vlogs? > > Statement 2 is working fine if vlogs are disabled, but I want the port > > value to be stored in a variable and then print. > > I'd just get it from the extracted flow instead of inventing new code to > extract it. >
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