UMEM_FRAME_SIZE
addr = i * UMEM_FRAME_SIZE;
addr = (UMEM_NUM / 2 + i) * UMEM_FRAME_SIZE;
tx_desc->addr = idx % (UMEM_NUM / 2) * UMEM_FRAME_SIZE + sizeof(struct xsk_tx_metadata);
#define UMEM_SIZE (UMEM_FRAME_SIZE * UMEM_NUM)
addr = i * UMEM_FRAME_SIZE;
addr = (UMEM_NUM / 2 + i) * UMEM_FRAME_SIZE;
tx_desc->addr = idx % (UMEM_NUM / 2) * UMEM_FRAME_SIZE + sizeof(struct xsk_tx_metadata);
#define UMEM_SIZE (UMEM_FRAME_SIZE * UMEM_NUM)