Function ff_bsd_to_rte

lib/ff_memory.c:398–438

create rte_mbuf refer to data in bsd mbuf.

//  create rte_mbuf refer to data in bsd mbuf.
static inline struct rte_mbuf*     ff_bsd_to_rte(void *m, int total)
{
    struct rte_mempool *mbuf_pool = ff_ref_pool[lcore_conf.socket_id];
    struct rte_mbuf *p_head = NULL;
    struct rte_mbuf *cur = NULL, *prev = NULL, *tmp=NULL;
    void    *data = NULL;
    void    *p_bsdbuf = NULL;
    unsigned len = 0;

    p_head = rte_pktmbuf_alloc(mbuf_pool);
    if (p_head == NULL){
        return NULL;
    }
    p_head->pkt_len = total;
    p_head->nb_segs = 0;
    cur = p_head;
    p_bsdbuf = m;
    while ( p_bsdbuf ){
        if (cur == NULL) {
            cur = rte_pktmbuf_alloc(mbuf_pool);
            if (cur == NULL) {
                rte_pktmbuf_free(p_head);
                return NULL;
            }
        }
        ff_next_mbuf(&p_bsdbuf, &data, &len);        // p_bsdbuf move to next mbuf.
        cur->buf_addr = data;
        cur->buf_iova = ff_mem_virt2phy((const void*)(cur->buf_addr));
        cur->data_off = 0;
        cur->data_len = len;

        p_head->nb_segs++;
        if (prev != NULL) {
            prev->next = cur;
        }
        prev = cur;
        cur = NULL;
    }

    return p_head;
}

int ff_if_send_onepkt(struct ff_dpdk_if_context *ctx, void *m, int total)
{