struct net_if* net_if_alloc(int net_if_id, const char* name, int rss_set_size) { struct net_if* net_if = malloc(sizeof(*net_if)); int ifindex; char dummy; if( (ifindex = if_nametoindex(name)) == 0 ) if( sscanf(name, "%u%c", &ifindex, &dummy) != 1 ) return NULL; net_if->name = strdup(name); TEST(net_if_id >= 0 && net_if_id < MAX_NET_IFS); net_if->id = net_if_id; net_if->ifindex = ifindex; if( ef_driver_open(&net_if->dh) < 0 ) goto fail1; if( ef_pd_alloc(&net_if->pd, net_if->dh, net_if->ifindex, EF_PD_DEFAULT) < 0 ) goto fail2; net_if->vi_set_size = rss_set_size; if( rss_set_size > 0 ) TRY(ef_vi_set_alloc_from_pd(&net_if->vi_set, net_if->dh, &net_if->pd, net_if->dh, rss_set_size)); return net_if; fail2: ef_driver_close(net_if->dh); fail1: free(net_if); return NULL; }
static void do_init(int ifindex) { enum ef_pd_flags pd_flags = 0; ef_filter_spec filter_spec; struct pkt_buf* pb; enum ef_vi_flags vi_flags = 0; int i; if( cfg_use_vf ) pd_flags |= EF_PD_VF; if( cfg_phys_mode ) pd_flags |= EF_PD_PHYS_MODE; if( cfg_disable_tx_push ) vi_flags |= EF_VI_TX_PUSH_DISABLE; /* Allocate virtual interface. */ TRY(ef_driver_open(&driver_handle)); TRY(ef_pd_alloc(&pd, driver_handle, ifindex, pd_flags)); TRY(ef_vi_alloc_from_pd(&vi, driver_handle, &pd, driver_handle, -1, -1, -1, NULL, -1, vi_flags)); #ifdef __x86_64__ TRY(ef_pio_alloc(&pio, driver_handle, &pd, -1, driver_handle)); TRY(ef_pio_link_vi(&pio, driver_handle, &vi, driver_handle)); #else /* PIO is only available on x86_64 systems */ TEST(0); #endif ef_filter_spec_init(&filter_spec, EF_FILTER_FLAG_NONE); TRY(ef_filter_spec_set_ip4_local(&filter_spec, IPPROTO_UDP, sa_local.sin_addr.s_addr, sa_local.sin_port)); TRY(ef_vi_filter_add(&vi, driver_handle, &filter_spec, NULL)); { int bytes = (N_RX_BUFS + 1) * RX_BUF_SIZE; void* p; TEST(posix_memalign(&p, 4096, bytes) == 0); TRY(ef_memreg_alloc(&memreg, driver_handle, &pd, driver_handle, p, bytes)); for( i = 0; i <= N_RX_BUFS; ++i ) { pkt_bufs[i] = (void*) ((char*) p + i * RX_BUF_SIZE); pkt_bufs[i]->dma_buf_addr = ef_memreg_dma_addr(&memreg, i * RX_BUF_SIZE); } } for( i = 0; i <= N_RX_BUFS; ++i ) { pb = pkt_bufs[i]; pb->id = i; pb->dma_buf_addr += MEMBER_OFFSET(struct pkt_buf, dma_buf); } init_udp_pkt(pkt_bufs[N_RX_BUFS]->dma_buf, cfg_payload_len); tx_frame_len = cfg_payload_len + header_size(); }