netmap_if's size (1096) exceeds its object size (1024)

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What steps will reproduce the problem?
1. In a Linux box, Load netmap.ko and ixgbe/ixgbe.ko
2. run 'pkt-gen -i <netif> -f rx'

What is the expected output? What do you see instead?
Rather than normally starting, it failed to run with the kernel message:
[ 1029.613780] 092.131683 [ 501] netmap_obj_malloc         netmap_if request 
size 1096 (objsize=1024) too large

What version of the product are you using? On what operating system?
Using a recent commit as of 04 Nov 2014 (7e9e5e7602f5c620ade)
Linux kernel version 3.14
Ubuntu 12.04 LTS

Please provide any additional information below.
I am actually using it by applying the following patch:
diff --git a/sys/dev/netmap/netmap_mem2.c b/sys/dev/netmap/netmap_mem2.c
index e869bf9..474d06e 100644
--- a/sys/dev/netmap/netmap_mem2.c
+++ b/sys/dev/netmap/netmap_mem2.c
@@ -164,7 +164,7 @@ netmap_mem_get_bufsize(struct netmap_mem_d *nmd)

 struct netmap_obj_params netmap_params[NETMAP_POOLS_NR] = {
        [NETMAP_IF_POOL] = {
-               .size = 1024,
+               .size = 2048,
                .num  = 100,
        },
        [NETMAP_RING_POOL] = {

Original issue reported on code.google.com by hwand...@gmail.com on 4 Nov 2014 at 5:38

[GoogleCodeExporter]

the issue happens only when pkt-gen is started if the specified interface is 
down. when the interface is correctly up, the above issue doesn't take place.

Original comment by hwand...@gmail.com on 4 Nov 2014 at 6:12

[GoogleCodeExporter]

No need to touch the source. You can increase the default sizes and number of 
buffers rings etc. by using the sysctl or sysfs entries.

Original comment by rizzo.un...@gmail.com on 17 Nov 2014 at 12:20

• Changed state: Invalid