DPDK KNI example

Question

I want to work with DPDK for packet processing I can't run kni example I tried every possible config and I get :

EAL: Error - exiting with code: 1 Cause: Invalid option specified

./build/kni -c 0x0f -n 4 -- -P -p 0x3 -config="(0,2,3),(1,4,5)"
./build/kni -c 0x0f -n 4 -- -P -p 0x3 -config="(0,4,6),(1,5,7)"

Answer 1

I should put a "--" before config, but in all samples it has one dash

Answer 2

Your command has en error:

./build/kni -c 0x0f -n 4 -- -P -p 0x3 -config="(0,4,6),(1,5,7)"

The -P option should put before -config, like this:

-c 0x0f -n 4 -- -p 0x3 -P --config="(0,4,6),(1,5,7)"

Answer 3

From DPDK sample application user guide:

to run the application with two ports served by six lcores, one lcore of RX, one lcore of TX, and one lcore of kernel thread for each port: ./build/kni -c 0xf0 -n 4 -- -P -p 0x3 -config="(0,4,6,8),(1,5,7,9)"

you need to check your "config" inputs(should be 4 elements for each port).

Answer 4

the following command will work

./build/kni  -l 4-5  -n 4 -- -p1 -P --config="(0, 4, 5)"