C++ rte_malloc函数代码示例

/*
 * Resize allocated memory.
 */
void *
rte_realloc(void *ptr, size_t size, unsigned align)
{
	if (ptr == NULL)
		return rte_malloc(NULL, size, align);

	struct malloc_elem *elem = malloc_elem_from_data(ptr);
	if (elem == NULL)
		rte_panic("Fatal error: memory corruption detected\n");

	size = CACHE_LINE_ROUNDUP(size), align = CACHE_LINE_ROUNDUP(align);
	/* check alignment matches first, and if ok, see if we can resize block */
	if (RTE_PTR_ALIGN(ptr,align) == ptr &&
			malloc_elem_resize(elem, size) == 0)
		return ptr;

	/* either alignment is off, or we have no room to expand,
	 * so move data. */
	void *new_ptr = rte_malloc(NULL, size, align);
	if (new_ptr == NULL)
		return NULL;
	const unsigned old_size = elem->size - MALLOC_ELEM_OVERHEAD;
	rte_memcpy(new_ptr, ptr, old_size < size ? old_size : size);
	rte_free(ptr);

	return new_ptr;
}

static void
metrics_display(int port_id)
{
	struct rte_metric_value *metrics;
	struct rte_metric_name *names;
	int len, ret;
	static const char *nic_stats_border = "########################";

	len = rte_metrics_get_names(NULL, 0);
	if (len < 0) {
		printf("Cannot get metrics count\n");
		return;
	}
	if (len == 0) {
		printf("No metrics to display (none have been registered)\n");
		return;
	}

	metrics = rte_malloc("proc_info_metrics",
		sizeof(struct rte_metric_value) * len, 0);
	if (metrics == NULL) {
		printf("Cannot allocate memory for metrics\n");
		return;
	}

	names =  rte_malloc(NULL, sizeof(struct rte_metric_name) * len, 0);
	if (names == NULL) {
		printf("Cannot allocate memory for metrcis names\n");
		rte_free(metrics);
		return;
	}

	if (len != rte_metrics_get_names(names, len)) {
		printf("Cannot get metrics names\n");
		rte_free(metrics);
		rte_free(names);
		return;
	}

	if (port_id == RTE_METRICS_GLOBAL)
		printf("###### Non port specific metrics  #########\n");
	else
		printf("###### metrics for port %-2d #########\n", port_id);
	printf("%s############################\n", nic_stats_border);
	ret = rte_metrics_get_values(port_id, metrics, len);
	if (ret < 0 || ret > len) {
		printf("Cannot get metrics values\n");
		rte_free(metrics);
		rte_free(names);
		return;
	}

	int i;
	for (i = 0; i < len; i++)
		printf("%s: %"PRIu64"\n", names[i].name, metrics[i].value);

	printf("%s############################\n", nic_stats_border);
	rte_free(metrics);
	rte_free(names);
}

void *
cperf_pmd_cyclecount_test_constructor(struct rte_mempool *sess_mp,
		uint8_t dev_id, uint16_t qp_id,
		const struct cperf_options *options,
		const struct cperf_test_vector *test_vector,
		const struct cperf_op_fns *op_fns)
{
	struct cperf_pmd_cyclecount_ctx *ctx = NULL;

	/* preallocate buffers for crypto ops as they can get quite big */
	size_t alloc_sz = sizeof(struct rte_crypto_op *) *
			options->nb_descriptors;

	ctx = rte_malloc(NULL, sizeof(struct cperf_pmd_cyclecount_ctx), 0);
	if (ctx == NULL)
		goto err;

	ctx->dev_id = dev_id;
	ctx->qp_id = qp_id;

	ctx->populate_ops = op_fns->populate_ops;
	ctx->options = options;
	ctx->test_vector = test_vector;

	/* IV goes at the end of the crypto operation */
	uint16_t iv_offset = sizeof(struct rte_crypto_op) +
			sizeof(struct rte_crypto_sym_op);

	ctx->sess = op_fns->sess_create(
			sess_mp, dev_id, options, test_vector, iv_offset);
	if (ctx->sess == NULL)
		goto err;

	if (cperf_alloc_common_memory(options, test_vector, dev_id, qp_id, 0,
			&ctx->src_buf_offset, &ctx->dst_buf_offset,
			&ctx->pool) < 0)
		goto err;

	ctx->ops = rte_malloc("ops", alloc_sz, 0);
	if (!ctx->ops)
		goto err;

	ctx->ops_processed = rte_malloc("ops_processed", alloc_sz, 0);
	if (!ctx->ops_processed)
		goto err;

	return ctx;

err:
	cperf_pmd_cyclecount_test_free(ctx);

	return NULL;
}

//将数据加入到Hash表中，其中，hash表中的表项以源目ip作为唯一标识。
void addToHashTable(void *handle, struct hashtable * table, struct ip * iphead, struct sk_buff *skb){
printf("2 ");
fflush(stdout);
	if (table->addr == NULL){
		table->addr = (struct srcDstAddr *)rte_malloc("srcaddr", sizeof(struct srcDstAddr),0);
		if (table->addr == NULL)
			{printf("Out of Mem5!\n");return ;}
		else{
 
			table->addr->Src = iphead->ip_src;
			table->addr->Dst = iphead->ip_dst;
			table->addr->next = NULL;
			table->addr->packets = NULL;
			addToAddr(handle, table->addr, iphead, skb);
		}
	}
	else{
		struct srcDstAddr * current, *pre;
		current = table->addr;
		pre = table->addr;
		while (current){
			if (current->Dst.s_addr == iphead->ip_src.s_addr && current->Src.s_addr == iphead->ip_dst.s_addr){
				//hit
				addToAddr(handle, current, iphead, skb);
				break;
			}
			else{
				pre = current;
				current = current->next;
			}
		}
		if (current == NULL){
			pre->next = (struct srcDstAddr *)rte_malloc("srcdst", sizeof(struct srcDstAddr),0);
			if (pre->next == NULL)
				{printf("Out of Mem6!\n");return ;}
			else{

				pre->next->Dst = iphead->ip_dst;
				pre->next->Src = iphead->ip_src;
				pre->next->next = NULL; 
				pre->next->packets = NULL; 
				addToAddr(handle, pre->next, iphead, skb);
			}

		}

	}
}

/*
 * kfifo_alloc - allocates a new FIFO and its internal buffer
 * @size: the size of the internal buffer to be allocated.
 * @lock: the lock to be used to protect the fifo buffer
 * The size will be rounded-up to a power of 2.
 */
struct sft_queue *sft_queue_alloc(unsigned int size)
{
    unsigned char *buffer;
    struct sft_queue *ret;

    /*
     * round up to the next power of 2, since our 'let the indices
     * wrap' technique works only in this case.
     */
    if (!is_power_of_2(size)) {
        BUG_ON(size > 0x80000000);
        size = roundup_pow_of_two(size);
    }

    buffer = rte_malloc(NULL, size, 0);
    if (unlikely(!buffer))
        return NULL;

    ret = sft_queue_init(buffer, size);

    if (unlikely(!ret))
        rte_free(buffer);

    return ret;
}

void ipDeFragment(void * handle, struct ip * iphead,struct sk_buff *skb){
	printf("1\n");
	IpImpl * impl = (IpImpl *)handle;
	int index = addrtoHash( iphead->ip_src, iphead->ip_dst);
	int offset = ntohs(iphead ->ip_off);
	int flags = offset&~IP_OFFSET;
	offset &= IP_OFFSET;
	if(((flags & IP_MF) ==0)&&(offset ==0)){// no fragment.
		//printf("No fragment.\n");
		struct ring_buf * ptr = (struct ring_buf *)rte_malloc("rp",sizeof(struct ring_buf *),0);
		if(ptr ==NULL)OUTOFMEM
		ptr -> type = 0;
		ptr -> ptr = iphead;
		rte_ring_enqueue(impl -> r, ptr);
		
	}
	else
	{
		printf("Fragment in %d.\n",index);
		fflush(stdout);
		addToHashTable(handle, &impl -> tables[index], iphead, skb);
	}
	//	tables[index].addr->packets->ipFra->info.ipHead = iphead;

		/*here need to add ip packet info */
		/*to do :add ipFragment head*/

}

/**
 * Set up the DPDK rings which will be used to pass packets, via
 * pointers, between the multi-process distributor and node processes.
 * Each node needs one RX queue.
 */
static int
init_shm_rings(void)
{
	unsigned int i;
	unsigned int socket_id;
	const char *q_name;
	const unsigned int ringsize = NODE_QUEUE_RINGSIZE;

	nodes = rte_malloc("node details",
		sizeof(*nodes) * num_nodes, 0);
	if (nodes == NULL)
		rte_exit(EXIT_FAILURE, "Cannot allocate memory for "
				"node program details\n");

	for (i = 0; i < num_nodes; i++) {
		/* Create an RX queue for each node */
		socket_id = rte_socket_id();
		q_name = get_rx_queue_name(i);
		nodes[i].rx_q = rte_ring_create(q_name,
				ringsize, socket_id,
				RING_F_SP_ENQ | RING_F_SC_DEQ);
		if (nodes[i].rx_q == NULL)
			rte_exit(EXIT_FAILURE, "Cannot create rx ring queue "
					"for node %u\n", i);
	}
	return 0;
}

static int
get_host_identifier(struct nvme_controller *ctrlr)
{
	int ret;
	uint64_t *host_id;
	struct nvme_command cmd = {};

	cmd.opc = NVME_OPC_GET_FEATURES;
	cmd.cdw10 = NVME_FEAT_HOST_IDENTIFIER;

	outstanding_commands = 0;

	host_id = rte_malloc(NULL, 8, 0);
	ret = nvme_ctrlr_cmd_admin_raw(ctrlr, &cmd, host_id, 8,
				       get_feature_completion, &features[NVME_FEAT_HOST_IDENTIFIER]);
	if (ret) {
		fprintf(stdout, "Get Feature: Failed\n");
		return -1;
	}

	outstanding_commands++;

	while (outstanding_commands) {
		nvme_ctrlr_process_admin_completions(ctrlr);
	}

	if (features[NVME_FEAT_HOST_IDENTIFIER].valid) {
		fprintf(stdout, "Get Feature: Host Identifier 0x%"PRIx64"\n", *host_id);
	}

	return 0;
}

void
pktgen_packet_dump(struct rte_mbuf *m, int pid)
{
	port_info_t *info = &pktgen.info[pid];
	int plen = (m->pkt_len + FCS_SIZE);
	unsigned char *curr_data;
	struct rte_mbuf *curr_mbuf;

	/* Checking if info->dump_tail will not overflow is done in the caller */
	if (info->dump_list[info->dump_tail].data != NULL)
		rte_free(info->dump_list[info->dump_tail].data);

	info->dump_list[info->dump_tail].data = rte_malloc("Packet data",
	                                                   plen,
	                                                   0);
	info->dump_list[info->dump_tail].len = plen;

	for (curr_data = info->dump_list[info->dump_tail].data, curr_mbuf = m;
	     curr_mbuf != NULL;
	     curr_data += curr_mbuf->data_len, curr_mbuf = curr_mbuf->next)
		rte_memcpy(curr_data,
		           (uint8_t *)curr_mbuf->buf_addr + m->data_off,
		           curr_mbuf->data_len);

	++info->dump_tail;
}

static int
vtophys_positive_test(void)
{
	void *p = NULL;
	int i;
	unsigned int size = 1;
	int rc = 0;

	for (i = 0; i < 31; i++) {
		p = rte_malloc("vtophys_test", size, 512);
		if (p == NULL)
			continue;

		if (spdk_vtophys(p) == SPDK_VTOPHYS_ERROR) {
			rc = -1;
			printf("Err: VA=%p is not mapped to a huge_page,\n", p);
			rte_free(p);
			break;
		}

		rte_free(p);
		size = size << 1;
	}

	if (!rc)
		printf("vtophys_positive_test passed\n");
	else
		printf("vtophys_positive_test failed\n");

	return rc;
}

/**
 * Set up the DPDK rings which will be used to pass packets, via
 * pointers, between the multi-process server and client processes.
 * Each client needs one RX queue.
 */
static int
init_shm_rings(void)
{
	unsigned i;
	unsigned socket_id;
	const char * q_name;
	const unsigned ringsize = CLIENT_QUEUE_RINGSIZE;

	clients = rte_malloc("client details",
		sizeof(*clients) * num_clients, 0);
	if (clients == NULL)
		rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n");

	for (i = 0; i < num_clients; i++) {
		/* Create an RX queue for each client */
		socket_id = rte_socket_id();
		q_name = get_rx_queue_name(i);
		clients[i].rx_q = rte_ring_create(q_name,
				ringsize, socket_id,
				RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */
		if (clients[i].rx_q == NULL)
			rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i);
	}
	return 0;
}

/**
 * Set up the DPDK rings which will be used to pass packets, via
 * pointers, between the multi-process server and client processes.
 * Each client needs one RX queue.
 */
static int
init_shm_rings(void)
{
	unsigned i;
	const unsigned ringsize = CLIENT_QUEUE_RINGSIZE;

	clients = rte_malloc("client details",
		sizeof(*clients) * num_clients, 0);
	if (clients == NULL)
		rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n");

	port_queues = rte_malloc("port_txq details",
		sizeof(*port_queues) * ports->num_ports, 0);
	if (port_queues == NULL)
		rte_exit(EXIT_FAILURE, "Cannot allocate memory for port tx_q details\n");

	for (i = 0; i < num_clients; i++) {
		/* Create an RX queue for each client */
		clients[i].rx_q = rte_ring_create(get_rx_queue_name(i),
				ringsize, SOCKET0,
				NO_FLAGS); /* multi producer multi consumer*/
		if (clients[i].rx_q == NULL)
			rte_exit(EXIT_FAILURE, "Cannot create rx ring for client %u\n", i);

		clients[i].tx_q = rte_ring_create(get_tx_queue_name(i),
				ringsize, SOCKET0,
				NO_FLAGS); /* multi producer multi consumer*/
		if (clients[i].tx_q == NULL)
			rte_exit(EXIT_FAILURE, "Cannot create tx ring for client %u\n", i);
	}

	for (i = 0; i < ports->num_ports; i++) {
		/* Create an RX queue for each ports */
		port_queues[i].tx_q = rte_ring_create(get_port_tx_queue_name(i),
				ringsize, SOCKET0,
				RING_F_SC_DEQ); /* multi producer single consumer*/
		if (port_queues[i].tx_q == NULL)
			rte_exit(EXIT_FAILURE, "Cannot create tx ring for port %u\n", i);
	}

	vswitch_packet_ring = rte_ring_create(PACKET_RING_NAME,
			         DAEMON_PKT_QUEUE_RINGSIZE, SOCKET0, NO_FLAGS);
	if (vswitch_packet_ring == NULL)
		rte_exit(EXIT_FAILURE, "Cannot create packet ring for vswitchd");

	return 0;
}

tw_tx_t * tw_tx_init(tw_loop_t * loop) {
    tw_tx_t * temp_handle = loop->tx_handle_queue;
    if (temp_handle == NULL) {
        temp_handle = rte_malloc("tw_tx_t *", sizeof (tw_tx_t), RTE_CACHE_LINE_SIZE);
        loop->tx_handle_queue = temp_handle;
    } else {
        while (temp_handle->next != NULL)
            temp_handle = temp_handle->next;
        temp_handle->next = rte_malloc("tw_tx_t *", sizeof (tw_tx_t), RTE_CACHE_LINE_SIZE);
        temp_handle = temp_handle->next;
    }
	
    //tx_handle = (tw_tx_t *) temp_handle;
    temp_handle->handle_type = TW_TX_HANDLE;
    loop->active_handles++;
    return temp_handle;
}

void*
control_init(int32_t socket_id, unsigned events)
{
	struct netl_handle* netl_h;
	struct handle_res* res;

	netl_h = netl_create(events);
	if (netl_h == NULL) {
		RTE_LOG(ERR, PKTJ_CTRL1, "Couldn't initialize netlink socket");
		goto err;
	}

	neighbor4_struct[socket_id] = nei_create(socket_id);
	if (neighbor4_struct[socket_id] == NULL) {
		RTE_LOG(ERR, PKTJ_CTRL1,
			"Couldn't initialize neighbor4 struct");
		goto err;
	}

	neighbor6_struct[socket_id] = nei_create(socket_id);
	if (neighbor6_struct[socket_id] == NULL) {
		RTE_LOG(ERR, PKTJ_CTRL1,
			"Couldn't initialize neighbor6 struct");
		goto err;
	}

	netl_h->cb.addr4 = addr4;
	netl_h->cb.addr6 = addr6;
	netl_h->cb.neighbor4 = neighbor4;
	netl_h->cb.neighbor6 = neighbor6;
	netl_h->cb.route4 = route4;
	netl_h->cb.route6 = route6;
	netl_h->cb.link = eth_link;

	struct in_addr invalid_ip = {INADDR_ANY};
	struct in6_addr invalid_ip6 = IN6ADDR_ANY_INIT;

	if (add_invalid_neighbor4(neighbor4_struct[socket_id], &invalid_ip,
				  BAD_PORT) < 0) {
		RTE_LOG(ERR, PKTJ_CTRL1,
			"Couldn't add drop target in neighbor4 table");
		goto err;
	}

	if (add_invalid_neighbor6(neighbor6_struct[socket_id], &invalid_ip6,
				  BAD_PORT) < 0) {
		RTE_LOG(ERR, PKTJ_CTRL1,
			"Couldn't add drop target in neighbor6 table");
		goto err;
	}

	res = rte_malloc("handle-res", sizeof(*res), socket_id);
	res->socket_id = socket_id;
	res->netl_h = netl_h;
	return res;
err:
	rte_panic("failed to init control_main");
}

void *
spdk_malloc(size_t size, size_t align, uint64_t *phys_addr)
{
	void *buf = rte_malloc(NULL, size, align);
	if (buf && phys_addr) {
		*phys_addr = rte_malloc_virt2phy(buf);
	}
	return buf;
}