something new:

 to set value in struct can be 

in case i cannot view picture.. i write the snippet here ..

static struct rte_eth_conf port_conf = {    .rxmode = {        .mq_mode = ETH_MQ_RX_NONE,        .max_rx_pkt_len = ETHER_MAX_LEN,        .split_hdr_size = 0,        .header_split = 0, /**< Header Split disabled */        .hw_ip_checksum = 0, /**

the dot punctuation means the member of the struct, that being used, member can be assigned without accordance to its order.