On 26 August 2014 15:49, Maxim Uvarov <[email protected]> wrote:
> On 08/26/2014 09:52 AM, Venkatesh Vivekanandan wrote: > >> Maxim, >> >> Need not apply this patch to upstream. It was sent, so that someone else >> can validate the multi-queue support in ODP-DPDK. >> >> Thanks, >> Venky >> > > Venky I'm fine with that patch. Do we need to pass 12 to command line > argument? 12 is number of cpus and number of dpdk threads, what will be if > number of cpus will change? Might be set Currently we can't pass from command line, one has to make the change in the code. Since this is just a sample(simple :-) ) patch, sent it with hard-coded values and not sure of the behavior with 128. I tested it on 4 ports(2 in pktgen and 2 in odp-dpdk) and 16 cpu machine, so 8 cpu's and 8 rings per odp-dpdk interface. From what I have seen, it varies based on dstip and it requires 12 different ip address to exercise all 8 cpu's of one interface in my test setup. It is good to use 128. up this to 128 to blast 128 different ips? > > Maxim. > > >> >> On 25 August 2014 20:14, <[email protected] <mailto: >> [email protected]>> wrote: >> >> From: Venkatesh Vivekanandan <[email protected] >> <mailto:[email protected]>> >> >> >> setup: >> >> - connect two ixgbe/igb cards to x86 box which has atleast 4 cpus. >> - Lets say we have eth0 & eth1 in one card and eth2 & eth3 in >> other card >> - eth0 and eth2 are connected back to back using cross cable(1g) or >> fibre(10g) >> - Similarly connect eth1 and eth3 >> >> test: >> >> - say eth2 and eth3 are given to dpdk on which odp-dpdk l2fwd app >> is running. >> cmd is ./example/l2fwd/odp_l2fwd -i 0,1 -m 0 >> - ensure eth0 and eth1 are brought up and put in promiscuous mode. >> - start odp_generator in rx mode in eth1. cmd is >> ./example/generator/odp_generator -I eth1 -m r >> - start odp_generator in tx mode in eth0. cmd is >> ./example/generator/odp_generator -I eth0 --srcmac >> a0:36:9f:13:89:08 >> --dstmac a0:36:9f:13:89:c8 -m u --dstip 201.0.0.0 >> - replace srcmac(eth0) and dstmac(eth2) with actual mac addresses >> on the port. >> - choose suitable dstip, so that packets are distributed to different >> cpus on the machine. >> >> Signed-off-by: Venkatesh Vivekanandan >> <[email protected] >> <mailto:[email protected]>> >> >> --- >> example/generator/odp_generator.c | 4 +++- >> 1 file changed, 3 insertions(+), 1 deletion(-) >> >> diff --git a/example/generator/odp_generator.c >> b/example/generator/odp_generator.c >> index b10372e..d202a8a 100644 >> --- a/example/generator/odp_generator.c >> +++ b/example/generator/odp_generator.c >> @@ -171,7 +171,7 @@ static int scan_mac(char *in, odp_ethaddr_t *des) >> static void pack_udp_pkt(odp_buffer_t obuf) >> { >> char *buf; >> - int max; >> + int max, i = 0; >> odp_packet_t pkt; >> odp_ethhdr_t *eth; >> odp_ipv4hdr_t *ip; >> @@ -195,6 +195,8 @@ static void pack_udp_pkt(odp_buffer_t obuf) >> /* ip */ >> odp_packet_set_l3_offset(pkt, ODP_ETHHDR_LEN); >> ip = (odp_ipv4hdr_t *)(buf + ODP_ETHHDR_LEN); >> + i = ((i+1) % 12); >> + args->appl.dstip = args->appl.dstip + i; >> ip->dst_addr = odp_cpu_to_be_32(args->appl.dstip); >> ip->src_addr = odp_cpu_to_be_32(args->appl.srcip); >> ip->ver_ihl = ODP_IPV4 << 4 | ODP_IPV4HDR_IHL_MIN; >> -- >> 1.8.1.2 >> >> >> >> >> _______________________________________________ >> lng-odp mailing list >> [email protected] >> http://lists.linaro.org/mailman/listinfo/lng-odp >> > > > _______________________________________________ > lng-odp mailing list > [email protected] > http://lists.linaro.org/mailman/listinfo/lng-odp >
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