On 08/26/2014 06:35 PM, Maxim Uvarov wrote:
On 08/26/2014 06:34 PM, Stuart Haslam wrote:
On Tue, Aug 26, 2014 at 03:08:20PM +0100, Maxim Uvarov wrote:
On 08/26/2014 05:51 PM, Stuart Haslam wrote:
On Mon, Aug 25, 2014 at 03:44:53PM +0100,
[email protected] wrote:
From: Venkatesh Vivekanandan <[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]>
---
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;
The patch description didn't help me understand what the patch was
intended to achieve, but it looks broken. i will always be 1 (was it
supposed to be static?)
that is not true.
Which part?.. it still looks broken to me.
i = ((i+1) % 12);
increments i, isn't it?
Ah, sorry loop in function above. Stuart, you are right here. That's
need to be fixed.
Upper function has counters.seq, Venky you can relay on it.
Maxim.
and args->appl.dstip is global, so for every
pack_udp_pkt call it gets incremented by 1..
and that is good comment, modify global value is not good thing.
Maxim.
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