Function ff_mmap_init

lib/ff_memory.c:228–274

}

int ff_mmap_init()
{
    int err = 0;
    int i = 0;
    uint64_t    virt_addr = (uint64_t)NULL;
    phys_addr_t    phys_addr = 0;
    uint64_t    bsd_memsz = (ff_global_cfg.freebsd.mem_size << 20);
    unsigned int bsd_pagesz = 0;

    ff_page_start = (uint64_t)mmap( NULL, bsd_memsz, PROT_READ | PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_POPULATE, -1, 0);
    if (ff_page_start == (uint64_t)-1){
        rte_panic("ff_mmap_init get ff_page_start failed, err=%d.\n", errno);
        return -1;
    }

    if ( mlock((void*)ff_page_start, bsd_memsz)<0 )    {
        rte_panic("mlock failed, err=%d.\n", errno);
        return -1;
    }
    ff_page_end = ff_page_start + bsd_memsz;
    bsd_pagesz = (bsd_memsz>>12);
    rte_log(RTE_LOG_INFO, RTE_LOGTYPE_USER1, "ff_mmap_init mmap %d pages, %d MB.\n", bsd_pagesz, ff_global_cfg.freebsd.mem_size);
    printf("ff_mmap_init mem[0x%lx:0x%lx]\n", ff_page_start, ff_page_end);

    if (posix_memalign((void**)&ff_mpage_phy, sizeof(phys_addr_t), bsd_pagesz*sizeof(phys_addr_t))!=0){
        rte_panic("posix_memalign get ff_mpage_phy failed, err=%d.\n", errno);
        return -1;
    }

    stklist_init(&ff_mpage_ctl, bsd_pagesz);

    for (i=0; (unsigned)i<bsd_pagesz; i++ ){
        virt_addr = ff_page_start + PAGE_SIZE*i;
        memset((void*)virt_addr, 0, PAGE_SIZE);

        stklist_push( &ff_mpage_ctl, virt_addr);
        ff_mpage_phy[i] = rte_mem_virt2phy((const void*)virt_addr);
        if ( ff_mpage_phy[i] == RTE_BAD_IOVA ){
            rte_panic("rte_mem_virt2phy return invalid address.");
            return -1;
        }
    }

    ff_txring_init(&nic_tx_ring[0], RTE_MAX_ETHPORTS);

    return 0;
}

// 1: vma in fstack page table;  0: vma not in fstack pages, in DPDK pool.
static inline int ff_chk_vma(const uint64_t virtaddr)