* [dpdk-dev] [PATCH] l2fwd:mac learning
@ 2016-10-03 6:17 Rafat Jahan
2016-10-03 6:45 ` Thomas Monjalon
0 siblings, 1 reply; 4+ messages in thread
From: Rafat Jahan @ 2016-10-03 6:17 UTC (permalink / raw)
To: dev; +Cc: Rafat Jahan
Added MAC learning to reduce load at l2
Signed-off-by: Rafat Jahan <rafat.jahan@tcs.com>
---
examples/l2fwd-mac/Makefile | 50 ++
examples/l2fwd-mac/main.c | 1325 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 1375 insertions(+)
create mode 100644 examples/l2fwd-mac/Makefile
create mode 100644 examples/l2fwd-mac/main.c
diff --git a/examples/l2fwd-mac/Makefile b/examples/l2fwd-mac/Makefile
new file mode 100644
index 0000000..6ab93f4
--- /dev/null
+++ b/examples/l2fwd-mac/Makefile
@@ -0,0 +1,50 @@
+# BSD LICENSE
+#
+# Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in
+# the documentation and/or other materials provided with the
+# distribution.
+# * Neither the name of Intel Corporation nor the names of its
+# contributors may be used to endorse or promote products derived
+# from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ifeq ($(RTE_SDK),)
+$(error "Please define RTE_SDK environment variable")
+endif
+
+# Default target, can be overriden by command line or environment
+RTE_TARGET ?= x86_64-native-linuxapp-gcc
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+# binary name
+APP = l2fwd-mac
+
+# all source are stored in SRCS-y
+SRCS-y := main.c
+
+CFLAGS += -O3
+CFLAGS += $(WERROR_FLAGS)
+
+include $(RTE_SDK)/mk/rte.extapp.mk
diff --git a/examples/l2fwd-mac/main.c b/examples/l2fwd-mac/main.c
new file mode 100644
index 0000000..33d6a6e
--- /dev/null
+++ b/examples/l2fwd-mac/main.c
@@ -0,0 +1,1325 @@
+/*-thread created and in which two seperate threads for updation and checking are created infinately
+
+ final working code
+
+
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <pthread.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <sys/types.h>
+#include <sys/queue.h>
+#include <netinet/in.h>
+#include <setjmp.h>
+#include <stdarg.h>
+#include <ctype.h>
+#include <errno.h>
+#include <getopt.h>
+
+#include <rte_common.h>
+#include <rte_log.h>
+#include <rte_memory.h>
+#include <rte_memcpy.h>
+#include <rte_memzone.h>
+#include <rte_eal.h>
+#include <rte_per_lcore.h>
+#include <rte_launch.h>
+#include <rte_atomic.h>
+#include <rte_cycles.h>
+#include <rte_prefetch.h>
+#include <rte_lcore.h>
+#include <rte_per_lcore.h>
+#include <rte_branch_prediction.h>
+#include <rte_interrupts.h>
+#include <rte_pci.h>
+#include <rte_random.h>
+#include <rte_debug.h>
+#include <rte_ether.h>
+#include <rte_ethdev.h>
+#include <rte_ring.h>
+#include <rte_mempool.h>
+#include <rte_mbuf.h>
+#include <rte_ip.h>
+#include <rte_arp.h>
+
+#define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
+
+#define NB_MBUF 8192
+
+#define MAX_PKT_BURST 32
+#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
+
+#define default_aging_time 30
+pthread_mutex_t mutex1 = PTHREAD_MUTEX_INITIALIZER;
+/*
+ * Work-around of a compilation error with ICC on invocations of the
+ * rte_be_to_cpu_16() function.
+ */
+#ifdef __GCC__
+#define RTE_BE_TO_CPU_16(be_16_v) rte_be_to_cpu_16((be_16_v))
+#define RTE_CPU_TO_BE_16(cpu_16_v) rte_cpu_to_be_16((cpu_16_v))
+#else
+#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN
+#define RTE_BE_TO_CPU_16(be_16_v) (be_16_v)
+#define RTE_CPU_TO_BE_16(cpu_16_v) (cpu_16_v)
+#else
+#define RTE_BE_TO_CPU_16(be_16_v) \
+ (uint16_t) ((((be_16_v) & 0xFF) << 8) | ((be_16_v) >> 8))
+#define RTE_CPU_TO_BE_16(cpu_16_v) \
+ (uint16_t) ((((cpu_16_v) & 0xFF) << 8) | ((cpu_16_v) >> 8))
+#endif
+#endif /* __GCC__ */
+
+/*
+ * Configurable number of RX/TX ring descriptors
+ */
+#define RTE_TEST_RX_DESC_DEFAULT 128
+#define RTE_TEST_TX_DESC_DEFAULT 512
+static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
+static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
+
+/* ethernet addresses of ports */
+static struct ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
+
+/* mask of enabled ports */
+static uint32_t l2fwd_enabled_port_mask = 0;
+static int64_t l2fwd_user_defined_dst_port = 0;
+static int16_t l2fwd_mac_learning_enabled = 0;
+uint64_t total_duplicate_packets_dropped = 0;
+
+/* list of enabled ports */
+static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
+
+static unsigned int l2fwd_rx_queue_per_lcore = 1;
+
+void add_mac_entry(struct ether_hdr *eth,unsigned port);
+static void l2fwd_mac_ports_update(struct ether_hdr *eth,unsigned rxport);
+static void l2fwd_mac_display(void);
+static void l2fwd_show_mac_entry(void);
+void source_mac_table(struct ether_hdr *eth,unsigned port);
+void add_src_mac_entry(struct ether_hdr *eth,unsigned port);
+void update_aging(struct ether_hdr *eth);
+void *thread1(void);
+void *thread2(void);
+void *threadInit(void);
+
+
+struct node
+{
+ unsigned port;
+ struct ether_addr s_addr; /**< Source address. */
+ struct ether_addr d_addr; /**< Destination address. */
+ time_t starttime;
+ struct node *next;
+}*head = NULL;
+
+struct mac_list
+{
+ unsigned port;
+ struct ether_addr s_addr;
+ time_t rx_time;
+ char *buff;
+ int aging_time;
+ struct mac_list *next;
+}*start = NULL;
+
+
+struct mbuf_table {
+ unsigned len;
+ struct rte_mbuf *m_table[MAX_PKT_BURST];
+};
+
+void update_node(struct mac_list *ptr);
+#define MAX_RX_QUEUE_PER_LCORE 16
+#define MAX_TX_QUEUE_PER_PORT 16
+struct lcore_queue_conf {
+ unsigned n_rx_port;
+ unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
+ struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
+
+} __rte_cache_aligned;
+struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
+
+static const struct rte_eth_conf port_conf = {
+ .rxmode = {
+ .split_hdr_size = 0,
+ .header_split = 0, /**< Header Split disabled */
+ .hw_ip_checksum = 0, /**< IP checksum offload disabled */
+ .hw_vlan_filter = 0, /**< VLAN filtering disabled */
+ .jumbo_frame = 0, /**< Jumbo Frame Support disabled */
+ .hw_strip_crc = 0, /**< CRC stripped by hardware */
+ },
+ .txmode = {
+ .mq_mode = ETH_MQ_TX_NONE,
+ },
+};
+
+struct rte_mempool * l2fwd_pktmbuf_pool = NULL;
+
+/* Per-port statistics struct */
+struct l2fwd_port_statistics {
+ uint64_t tx;
+ uint64_t rx;
+ uint64_t dropped;
+} __rte_cache_aligned;
+struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
+
+/* A tsc-based timer responsible for triggering statistics printout */
+#define TIMER_MILLISECOND 2000000ULL /* around 1ms at 2 Ghz */
+#define MAX_TIMER_PERIOD 86400 /* 1 day max */
+static int64_t timer_period = 10 * TIMER_MILLISECOND * 1000; /* default period is 10 seconds */
+
+static inline void
+print_ether_addr(const char *what, struct ether_addr *eth_addr)
+{
+ char buf[ETHER_ADDR_FMT_SIZE];
+ ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
+ printf("%s%s", what, buf);
+}
+
+static void
+ipv4_addr_to_dot(uint32_t be_ipv4_addr, char *buf)
+{
+ uint32_t ipv4_addr;
+
+ ipv4_addr = rte_be_to_cpu_32(be_ipv4_addr);
+ sprintf(buf, "%d.%d.%d.%d", (ipv4_addr >> 24) & 0xFF,
+ (ipv4_addr >> 16) & 0xFF, (ipv4_addr >> 8) & 0xFF,
+ ipv4_addr & 0xFF);
+}
+
+static void
+ipv4_addr_dump(const char *what, uint32_t be_ipv4_addr)
+{
+ char buf[16];
+
+ ipv4_addr_to_dot(be_ipv4_addr, buf);
+ if (what)
+ printf("%s", what);
+ printf("%s", buf);
+}
+
+void add_mac_entry(struct ether_hdr *eth,unsigned port)
+{
+ struct node *new = NULL;
+ new = (struct node*)malloc(sizeof(struct node));
+ if(new == NULL)
+ {
+ printf("Memory not allocated for MAC database");
+ }
+
+ source_mac_table(eth,port);
+
+ new->port = port;
+ new->starttime = time(NULL);
+ ether_addr_copy(ð->s_addr, &new->s_addr);
+ ether_addr_copy(ð->d_addr, &new->d_addr);
+ if(head == NULL)
+ {
+ head = new;
+ head->next = NULL;
+
+ }
+ else
+ {
+ new->next = head;
+ head = new;
+
+ }
+}
+
+void source_mac_table(struct ether_hdr *eth,unsigned port)
+{
+
+ struct mac_list *ptr = NULL;
+ ptr = start;
+ if(start == NULL)
+ {
+ printf("Adding entry to the table\n");
+ add_src_mac_entry(eth,port);
+ }
+ else
+ {
+ while(ptr != NULL)
+ {
+ if (memcmp(ð->s_addr, &ptr->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+
+ ptr->rx_time=time(NULL);
+ ptr->aging_time=default_aging_time;
+ if(ptr->port != port )
+ {
+ ptr->port = port;
+ break;
+ }
+ else
+ break; // received from same mac
+ }
+ ptr = ptr->next;
+ }
+ if(ptr == NULL)
+ {
+ /*If the mac entry is not found in the table, then add the entry
+ to the mac table */
+ printf("Adding MAC entry to table\n");
+ add_src_mac_entry(eth,port);
+ }
+
+ }
+}
+
+void add_src_mac_entry(struct ether_hdr *eth,unsigned port)
+{
+ struct mac_list *new = NULL;
+ new = (struct mac_list*)malloc(sizeof(struct mac_list));
+ if(new == NULL)
+ {
+ printf("Memory not allocated for MAC database");
+ }
+ new->port = port;
+ ether_addr_copy(ð->s_addr, &new->s_addr);
+ new->rx_time=time(NULL);
+ new->aging_time=default_aging_time;
+ if(start == NULL)
+ {
+ start = new;
+ start->next = NULL;
+ }
+ else
+ {
+ new->next=start;
+ start=new;
+ }
+
+}
+
+/* Print out statistics on packets dropped */
+static void
+print_stats(void)
+{
+ uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
+ unsigned portid;
+
+ total_packets_dropped = 0;
+ total_packets_tx = 0;
+ total_packets_rx = 0;
+
+ const char clr[] = { 27, '[', '2', 'J', '\0' };
+ const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' };
+
+ /* Clear screen and move to top left */
+ printf("%s%s", clr, topLeft);
+
+ printf("\nPort statistics ====================================");
+
+ for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
+ /* skip disabled ports */
+ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
+ continue;
+ printf("\nStatistics for port %u ------------------------------"
+ "\nPackets sent: %24"PRIu64
+ "\nPackets received: %20"PRIu64
+ "\nPackets dropped: %21"PRIu64,
+ portid,
+ port_statistics[portid].tx,
+ port_statistics[portid].rx,
+ port_statistics[portid].dropped);
+
+ total_packets_dropped += port_statistics[portid].dropped;
+ total_packets_tx += port_statistics[portid].tx;
+ total_packets_rx += port_statistics[portid].rx;
+ }
+ printf("\nAggregate statistics ==============================="
+ "\nTotal packets sent: %18"PRIu64
+ "\nTotal packets received: %14"PRIu64
+ "\nTotal packets dropped: %15"PRIu64,
+ total_packets_tx,
+ total_packets_rx,
+ total_packets_dropped);
+ printf("\nTotal duplicate packets dropped: %5"PRIu64,
+ total_duplicate_packets_dropped);
+ printf("\n====================================================\n");
+}
+
+
+/* Send the burst of packets on an output interface */
+static int
+l2fwd_send_burst(struct lcore_queue_conf *qconf, unsigned n, uint8_t port)
+{
+ struct rte_mbuf **m_table;
+ unsigned ret;
+ unsigned queueid =0;
+
+ m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
+
+ ret = rte_eth_tx_burst(port, (uint16_t) queueid, m_table, (uint16_t) n);
+ port_statistics[port].tx += ret;
+ if (unlikely(ret < n)) {
+ port_statistics[port].dropped += (n - ret);
+ do {
+ rte_pktmbuf_free(m_table[ret]);
+ } while (++ret < n);
+ }
+
+ return 0;
+}
+
+/* Enqueue packets for TX and prepare them to be sent */
+static int
+l2fwd_send_packet(struct rte_mbuf *m, uint8_t port)
+{
+ unsigned lcore_id, len;
+ struct lcore_queue_conf *qconf;
+
+ lcore_id = rte_lcore_id();
+
+ qconf = &lcore_queue_conf[lcore_id];
+ len = qconf->tx_mbufs[port].len;
+ qconf->tx_mbufs[port].m_table[len] = m;
+ len++;
+
+ /* enough pkts to be sent */
+ if (unlikely(len == MAX_PKT_BURST)) {
+ l2fwd_send_burst(qconf, MAX_PKT_BURST, port);
+ len = 0;
+ }
+
+ qconf->tx_mbufs[port].len = len;
+ return 0;
+}
+static void l2fwd_mac_display(void)
+{
+ struct node *node = NULL;
+ printf("\n==============DEBUGGING MAC TABLE=================\n");
+ printf(" SMAC DMAC PORT \n");
+ node = head;
+ while(node != NULL)
+ {
+ print_ether_addr("", &node->s_addr);
+ print_ether_addr(" ",&node->d_addr);
+ printf(" %d\n",node->port);
+ node = node->next;
+ }
+ printf("========================================\n");
+}
+static void l2fwd_show_mac_entry(void)
+{
+ struct mac_list *node = NULL;
+ printf("\n==============MAC TABLE=================\n");
+ printf(" MAC PORT\taging time\n");
+ node = start;
+ while(node != NULL)
+ {
+ print_ether_addr("", &node->s_addr);
+ printf(" %d\t",node->port);
+ printf("%d\n",node->aging_time);
+
+ node = node->next;
+ }
+ printf("========================================\n");
+}
+static void l2fwd_mac_ports_update(struct ether_hdr *eth,unsigned rxport)
+{
+ struct node *ptr = NULL;
+ struct mac_list *ptr1 = NULL;
+
+ ptr = head;
+ while(ptr != NULL)
+ {
+ if (memcmp(ð->s_addr, &ptr->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+ ptr->port = rxport;
+ }
+ ptr = ptr->next;
+ }
+
+ ptr1 = start;
+ while(ptr1 != NULL)
+ {
+ if (memcmp(ð->s_addr, &ptr1->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+ ptr1->port = rxport;
+ ptr1->rx_time=time(NULL);
+ ptr1->aging_time=default_aging_time;
+ }
+ ptr1 = ptr1->next;
+ }
+
+}
+void update_aging(struct ether_hdr *eth)
+{
+ struct mac_list *ptr1=NULL;
+ ptr1 = start;
+ while(ptr1 != NULL)
+ {
+ if (memcmp(ð->s_addr, &ptr1->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+ ptr1->rx_time=time(NULL);
+ ptr1->aging_time=default_aging_time;
+ }
+ ptr1 = ptr1->next;
+ }
+}
+static void
+l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
+{
+ struct ether_hdr *eth;
+ void *tmp;
+ unsigned dst_port;
+ int currenttime,difference,timeout = 8;
+ //int err;
+ //pthread_t t1,t2;
+ dst_port = l2fwd_dst_ports[portid];
+ printf("---------- Forwarding Path ----------\n");
+ printf("Default forwarding dst port : %d\n",dst_port);
+
+ eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
+
+ if(l2fwd_user_defined_dst_port > 0)
+ {
+ dst_port = l2fwd_user_defined_dst_port;
+ printf("User defined dst Port : %d\n",dst_port);
+ printf("----------------------------------------\n");
+ printf("Forwarding path has been modified from default to user defined\n");
+ }
+ else if(l2fwd_mac_learning_enabled)
+ {
+ //l2fwd_mac_display();
+ //l2fwd_show_mac_entry();
+ //pthread_mutex_lock( &mutex1 );
+ struct node *ptr = NULL;
+ struct mac_list *temp = NULL;
+ ptr = head;
+ if(head == NULL)
+ {
+ printf("No MAC address exist in table , adding entry to the table\n");
+ add_mac_entry(eth,portid);
+ }
+ else
+ {
+ /* condition to check and overwrite the 'port' if the same mac address
+ was already received from another 'port' earlier*/
+ while(ptr != NULL)
+ {
+ if ((memcmp(ð->s_addr, &ptr->s_addr, ETHER_ADDR_LEN) == 0) &&
+ (memcmp(ð->d_addr, &ptr->d_addr, ETHER_ADDR_LEN) == 0))
+ {
+ // printf("----->same SMAC DMAC\n");
+ if(portid != ptr->port)
+ {
+ printf("port id is different %d\n",portid);
+ currenttime = time(NULL);
+ difference = currenttime - (ptr->starttime);
+ if(difference > timeout)
+ {
+ printf("----->difference %d\n",difference);
+ ptr->port = portid;
+ ptr->starttime = time(NULL);
+ l2fwd_mac_ports_update(eth,portid);
+ // add_mac_entry(eth,portid);
+ break;
+ } else {
+ printf("Detected duplication,packet dropped \n");
+ //duplicate packet
+ total_duplicate_packets_dropped++;
+ //need to check whether break is needed
+ // return;
+ }
+ }
+
+ ptr->starttime = time(NULL);
+ update_aging(eth);
+ // printf("---->received from same mac diff %d\n",difference);
+ break;
+ }
+ ptr = ptr->next;
+ }
+ if(ptr == NULL)
+ {
+ /*If the mac entry is not found in the table, then add the entry
+ to the mac table */
+ printf("Adding MAC entry to table\n");
+ add_mac_entry(eth,portid);
+ //l2fwd_mac_ports_update(eth,portid);
+ }
+ }
+
+
+ /* lookup to get the dst port if the mac entry is already present in the table*/
+ temp = start;
+ while(temp != NULL)
+ {
+ if (memcmp(ð->d_addr, &temp->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+ dst_port = temp->port;
+ printf("\n");
+ printf("dst port from table : %d\n",dst_port);
+ break;
+ }
+ temp = temp->next;
+ }
+ /*If the dst mac is not available,then forward the packet in dumping port*/
+ if(temp == NULL)
+ {
+ dst_port = 9;
+ printf("Dumping port : %d\n",dst_port);
+ }
+
+ }
+ else
+ {
+//========================================================
+ /* 02:00:00:00:00:xx */
+ tmp = ð->d_addr.addr_bytes[0];
+ *((uint64_t *)tmp) = 0xffffffffffff ;
+ //*((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
+
+ /* src addr */
+ ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], ð->s_addr);
+ }
+
+ printf("========================================\n");
+ l2fwd_mac_display();
+ l2fwd_show_mac_entry();
+ //pthread_mutex_unlock( &mutex1 );
+ l2fwd_send_packet(m, (uint8_t) dst_port);
+}
+
+/* main processing loop */
+static void
+l2fwd_main_loop(void)
+{
+ struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
+ struct rte_mbuf *m;
+ unsigned lcore_id;
+ uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
+ unsigned i, j, portid, nb_rx;
+ struct lcore_queue_conf *qconf;
+ const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
+ struct ether_hdr *eth_hdr;
+ uint16_t eth_type;
+ struct ipv4_hdr *ip_h;
+ int l2_len;
+ struct arp_hdr *arp_h;
+ uint32_t sip_addr,tip_addr;
+
+ prev_tsc = 0;
+ timer_tsc = 0;
+
+ lcore_id = rte_lcore_id();
+ qconf = &lcore_queue_conf[lcore_id];
+
+ if (qconf->n_rx_port == 0) {
+ RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
+ return;
+ }
+
+ RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
+
+ for (i = 0; i < qconf->n_rx_port; i++) {
+
+ portid = qconf->rx_port_list[i];
+ RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
+ portid);
+ }
+
+ while (1) {
+
+ cur_tsc = rte_rdtsc();
+
+ /*
+ * TX burst queue drain
+ */
+ diff_tsc = cur_tsc - prev_tsc;
+ if (unlikely(diff_tsc > drain_tsc)) {
+
+ for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
+ if (qconf->tx_mbufs[portid].len == 0)
+ continue;
+ l2fwd_send_burst(&lcore_queue_conf[lcore_id],
+ qconf->tx_mbufs[portid].len,
+ (uint8_t) portid);
+ qconf->tx_mbufs[portid].len = 0;
+ }
+
+ /* if timer is enabled */
+ if (timer_period > 0) {
+
+ /* advance the timer */
+ timer_tsc += diff_tsc;
+
+ /* if timer has reached its timeout */
+ if (unlikely(timer_tsc >= (uint64_t) timer_period)) {
+
+ /* do this only on master core */
+ if (lcore_id == rte_get_master_lcore()) {
+ print_stats();
+ /* reset the timer */
+ timer_tsc = 0;
+ }
+ }
+ }
+
+ prev_tsc = cur_tsc;
+ }
+
+ /*
+ * Read packet from RX queues
+ */
+ for (i = 0; i < qconf->n_rx_port; i++) {
+
+ portid = qconf->rx_port_list[i];
+ nb_rx = rte_eth_rx_burst((uint8_t) portid, 0,
+ pkts_burst, MAX_PKT_BURST);
+
+ if(nb_rx == 0)
+ continue;
+ port_statistics[portid].rx += nb_rx;
+
+ for (j = 0; j < nb_rx; j++) {
+ m = pkts_burst[j];
+ rte_prefetch0(rte_pktmbuf_mtod(m, void *));
+
+ eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
+ eth_type = RTE_BE_TO_CPU_16(eth_hdr->ether_type);
+ l2_len = sizeof(struct ether_hdr);
+
+ //if (eth_type != ETHER_TYPE_IPv4) {
+ // rte_pktmbuf_free(m);
+ // continue;
+ //}
+
+ printf("========================================\n");
+ printf("Packet received on port :%d\n",portid);
+ printf("------------ L2 Details------------\n");
+ print_ether_addr(" Source MAC : ", ð_hdr->s_addr);
+ print_ether_addr("\n Destination MAC : ", ð_hdr->d_addr);
+ printf("\n Port : %d"
+ "\n Ethernet Type : 0x%04x"
+ "\n Length : %u "
+ "\n Nb_segs : %d",
+ portid,
+ eth_type,
+ (unsigned) m->pkt_len,
+ (int)m->nb_segs);
+ printf("\n");
+
+ if (eth_type == ETHER_TYPE_ARP)
+ {
+ arp_h = (struct arp_hdr *) ((char *)eth_hdr + l2_len);
+ sip_addr = arp_h->arp_data.arp_sip;
+ tip_addr = arp_h->arp_data.arp_tip;
+ } else
+ {
+ if (eth_type != ETHER_TYPE_IPv4) {
+ rte_pktmbuf_free(m);
+ continue;
+ }
+ ip_h = (struct ipv4_hdr *) ((char *)eth_hdr + l2_len);
+ sip_addr = ip_h->src_addr;
+ tip_addr = ip_h->dst_addr;
+ }
+ printf("------------ L3 Details------------\n");
+ ipv4_addr_dump(" Source IP : ", sip_addr);
+ ipv4_addr_dump("\n Destination IP : ", tip_addr);
+ printf("\n");
+
+ l2fwd_simple_forward(m, portid);
+ }
+ }
+ }
+}
+
+static int
+l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
+{
+ l2fwd_main_loop();
+ return 0;
+}
+
+/* display usage */
+static void
+l2fwd_usage(const char *prgname)
+{
+ printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
+ " -p PORTMASK: hexadecimal bitmask of ports to configure\n"
+ " -q NQ: number of queue (=ports) per lcore (default is 1)\n"
+ " -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
+ " -d DST PORT: user input to select the destination port\n"
+ " -l MAC LEARNING: enable l2fwd mac learning 1-enable : 0 - disable(default) \n",
+ prgname);
+}
+
+static int
+l2fwd_parse_portmask(const char *portmask)
+{
+ char *end = NULL;
+ unsigned long pm;
+
+ /* parse hexadecimal string */
+ pm = strtoul(portmask, &end, 16);
+ if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return -1;
+
+ if (pm == 0)
+ return -1;
+
+ return pm;
+}
+
+static unsigned int
+l2fwd_parse_nqueue(const char *q_arg)
+{
+ char *end = NULL;
+ unsigned long n;
+
+ /* parse hexadecimal string */
+ n = strtoul(q_arg, &end, 10);
+ if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return 0;
+ if (n == 0)
+ return 0;
+ if (n >= MAX_RX_QUEUE_PER_LCORE)
+ return 0;
+
+ return n;
+}
+
+static int
+l2fwd_parse_timer_period(const char *q_arg)
+{
+ char *end = NULL;
+ int n;
+
+ /* parse number string */
+ n = strtol(q_arg, &end, 10);
+ if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return -1;
+ if (n >= MAX_TIMER_PERIOD)
+ return -1;
+
+ return n;
+}
+
+static int
+pktcap_parse_dst_port(const char *q_arg)
+{
+ char *end = NULL;
+ int n;
+
+ /* parse number string */
+ n = strtol(q_arg, &end, 10);
+ if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return -1;
+ if (n > RTE_MAX_ETHPORTS)
+ return -1;
+
+ return n;
+}
+
+static int
+l2fwd_parse_mac_learning(const char *q_arg)
+{
+ char *end = NULL;
+ int n;
+
+ /* parse number string */
+ n = strtol(q_arg, &end, 0);
+ if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return -1;
+ if (n > 1)
+ return -1;
+
+ return n;
+}
+/* Parse the argument given in the command line of the application */
+static int
+l2fwd_parse_args(int argc, char **argv)
+{
+ int opt, ret;
+ char **argvopt;
+ int option_index;
+ char *prgname = argv[0];
+ static struct option lgopts[] = {
+ {NULL, 0, 0, 0}
+ };
+
+ argvopt = argv;
+
+ while ((opt = getopt_long(argc, argvopt, "p:q:T:d:l:",
+ lgopts, &option_index)) != EOF) {
+
+ switch (opt) {
+ /* portmask */
+ case 'p':
+ l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
+ if (l2fwd_enabled_port_mask == 0) {
+ printf("invalid portmask\n");
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ break;
+
+ /* nqueue */
+ case 'q':
+ l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
+ if (l2fwd_rx_queue_per_lcore == 0) {
+ printf("invalid queue number\n");
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ break;
+
+ /* timer period */
+ case 'T':
+ timer_period = l2fwd_parse_timer_period(optarg) * 1000 * TIMER_MILLISECOND;
+ if (timer_period < 0) {
+ printf("invalid timer period\n");
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ break;
+
+ /* user defined dst port*/
+ case 'd':
+ l2fwd_user_defined_dst_port = pktcap_parse_dst_port(optarg);
+ if (l2fwd_user_defined_dst_port < 0) {
+ printf("invalid port number\n");
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ break;
+
+ /* l2 mac learning*/
+ case 'l':
+ l2fwd_mac_learning_enabled = l2fwd_parse_mac_learning(optarg);
+ if (l2fwd_mac_learning_enabled < 0) {
+ printf("invalid option\n");
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ break;
+ /* long options */
+ case 0:
+ l2fwd_usage(prgname);
+ return -1;
+
+ default:
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ }
+
+ if (optind >= 0)
+ argv[optind-1] = prgname;
+
+ ret = optind-1;
+ optind = 0; /* reset getopt lib */
+ return ret;
+}
+
+/* Check the link status of all ports in up to 9s, and print them finally */
+static void
+check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
+{
+#define CHECK_INTERVAL 100 /* 100ms */
+#define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
+ uint8_t portid, count, all_ports_up, print_flag = 0;
+ struct rte_eth_link link;
+
+ printf("\nChecking link status");
+ fflush(stdout);
+ for (count = 0; count <= MAX_CHECK_TIME; count++) {
+ all_ports_up = 1;
+ for (portid = 0; portid < port_num; portid++) {
+ if ((port_mask & (1 << portid)) == 0)
+ continue;
+ memset(&link, 0, sizeof(link));
+ rte_eth_link_get_nowait(portid, &link);
+ /* print link status if flag set */
+ if (print_flag == 1) {
+ if (link.link_status)
+ printf("Port %d Link Up - speed %u "
+ "Mbps - %s\n", (uint8_t)portid,
+ (unsigned)link.link_speed,
+ (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
+ ("full-duplex") : ("half-duplex\n"));
+ else
+ printf("Port %d Link Down\n",
+ (uint8_t)portid);
+ continue;
+ }
+ /* clear all_ports_up flag if any link down */
+ if (link.link_status == 0) {
+ all_ports_up = 0;
+ break;
+ }
+ }
+ /* after finally printing all link status, get out */
+ if (print_flag == 1)
+ break;
+
+ if (all_ports_up == 0) {
+ printf(".");
+ fflush(stdout);
+ rte_delay_ms(CHECK_INTERVAL);
+ }
+
+ /* set the print_flag if all ports up or timeout */
+ if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
+ print_flag = 1;
+ printf("done\n");
+ }
+ }
+}
+
+void *thread2(void)
+{
+ if(start!=NULL)
+ {
+
+ pthread_mutex_lock( &mutex1 );
+ struct mac_list *temp=start;
+ while(temp!=NULL)
+ {
+ if(temp->aging_time>0)
+ temp->aging_time=default_aging_time-(time(NULL)-temp->rx_time);
+ //strcpy(temp->buff,"check");
+ temp=temp->next;
+ }
+ pthread_mutex_unlock( &mutex1 );
+ }
+ pthread_exit(NULL);
+ return NULL;
+}
+
+void update_node(struct mac_list *l_temp)
+{
+ struct node *temp,*temp2,*prev;
+ if(head!=NULL)
+ {
+ while(head!=NULL)
+ {
+ if(memcmp(&l_temp->s_addr, &head->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+ temp=head;
+ head=head->next;
+ free(temp);
+ }
+ else
+ break;
+ }
+ // if(head!=NULL)
+ temp=head->next;
+ prev=head;
+ while(temp!=NULL && head!=NULL)
+ {
+ if(memcmp(&l_temp->s_addr, &temp->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+ prev->next=temp->next;
+ temp2=temp;
+ temp=temp->next;
+ free(temp2);
+ }
+ else
+ {
+ temp=temp->next;
+ prev=prev->next;
+ }
+ }
+ }
+
+
+}
+
+
+void *thread1(void)
+{
+ struct mac_list *temp,*temp2,*prev;
+
+ if(start!=NULL)
+ {
+
+ pthread_mutex_lock( &mutex1 );
+ while(start!=NULL)
+ {
+ if( start->aging_time==0)
+ {
+ temp = start;
+ update_node(temp);
+ start=start->next;
+ free(temp);
+
+ }
+ else
+ break;
+ }
+ // if(start!=NULL)
+ temp = start->next;
+ prev=start;
+ while(temp!= NULL && start!=NULL)
+ {
+
+ if(temp->aging_time==0)
+ {
+ update_node(temp);
+ prev->next=temp->next;
+ temp2=temp;
+ temp=temp->next;
+ if(temp2!=NULL)
+ free(temp2);
+ }
+ else
+ {
+ temp = temp->next;
+ prev=prev->next;
+ }
+ }
+ pthread_mutex_unlock( &mutex1 );
+ }
+ pthread_exit(NULL);
+ return NULL;
+}
+void *threadInit(void)
+{
+ pthread_t t1,t2;
+ int err;
+ while(1)
+ {
+ err=pthread_create(&t1, NULL,(void *)thread1,NULL);//for checking the mac table
+ pthread_join(t1,NULL);
+
+
+ err=pthread_create(&t2,NULL,(void *)thread2,NULL);//for updating the mac table
+ pthread_join(t2,NULL);
+
+ if(err!=0)
+ {
+ printf("thread not created\n");
+ exit(0);
+ }
+ }
+ return NULL;
+}
+
+int
+main(int argc, char **argv)
+{
+ struct lcore_queue_conf *qconf;
+ struct rte_eth_dev_info dev_info;
+ int ret,err;
+ uint8_t nb_ports;
+ uint8_t nb_ports_available;
+ uint8_t portid, last_port;
+ unsigned lcore_id, rx_lcore_id;
+ unsigned nb_ports_in_mask = 0;
+ pthread_t t3;
+ /* init EAL */
+ ret = rte_eal_init(argc, argv);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
+ argc -= ret;
+ argv += ret;
+
+ /* parse application arguments (after the EAL ones) */
+ ret = l2fwd_parse_args(argc, argv);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
+
+ /* create the mbuf pool */
+ l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32,
+ 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
+ if (l2fwd_pktmbuf_pool == NULL)
+ rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
+
+ nb_ports = rte_eth_dev_count();
+ if (nb_ports == 0)
+ rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
+
+ if (nb_ports > RTE_MAX_ETHPORTS)
+ nb_ports = RTE_MAX_ETHPORTS;
+
+ /* reset l2fwd_dst_ports */
+ for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
+ l2fwd_dst_ports[portid] = 0;
+ last_port = 0;
+
+ printf("Entered port : %" PRId64 "\n",l2fwd_user_defined_dst_port);
+
+ /*
+ * Each logical core is assigned a dedicated TX queue on each port.
+ */
+ if(l2fwd_user_defined_dst_port == 0)
+ {
+ for (portid = 0; portid < nb_ports; portid++) {
+ /* skip ports that are not enabled */
+ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
+ continue;
+
+ if (nb_ports_in_mask % 2) {
+ l2fwd_dst_ports[portid] = last_port;
+ l2fwd_dst_ports[last_port] = portid;
+ }
+ else
+ last_port = portid;
+
+ nb_ports_in_mask++;
+
+ rte_eth_dev_info_get(portid, &dev_info);
+ }
+ if (nb_ports_in_mask % 2) {
+ printf("Notice: odd number of ports in portmask.\n");
+ l2fwd_dst_ports[last_port] = last_port;
+ }
+
+ }
+ rx_lcore_id = 0;
+ qconf = NULL;
+
+ /* Initialize the port/queue configuration of each logical core */
+ for (portid = 0; portid < nb_ports; portid++) {
+ /* skip ports that are not enabled */
+ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
+ continue;
+
+ /* get the lcore_id for this port */
+ while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
+ lcore_queue_conf[rx_lcore_id].n_rx_port ==
+ l2fwd_rx_queue_per_lcore) {
+ rx_lcore_id++;
+ if (rx_lcore_id >= RTE_MAX_LCORE)
+ rte_exit(EXIT_FAILURE, "Not enough cores\n");
+ }
+
+ if (qconf != &lcore_queue_conf[rx_lcore_id])
+ /* Assigned a new logical core in the loop above. */
+ qconf = &lcore_queue_conf[rx_lcore_id];
+
+ qconf->rx_port_list[qconf->n_rx_port] = portid;
+ qconf->n_rx_port++;
+ printf("Lcore %u: RX port %u\n", rx_lcore_id, (unsigned) portid);
+ }
+
+ nb_ports_available = nb_ports;
+
+ /* Initialise each port */
+ for (portid = 0; portid < nb_ports; portid++) {
+ /* skip ports that are not enabled */
+ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
+ printf("Skipping disabled port %u\n", (unsigned) portid);
+ nb_ports_available--;
+ continue;
+ }
+ /* init port */
+ printf("Initializing port %u... ", (unsigned) portid);
+ fflush(stdout);
+ ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
+ ret, (unsigned) portid);
+
+ rte_eth_macaddr_get(portid,&l2fwd_ports_eth_addr[portid]);
+
+ /* init one RX queue */
+ fflush(stdout);
+ ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
+ rte_eth_dev_socket_id(portid),
+ NULL,
+ l2fwd_pktmbuf_pool);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
+ ret, (unsigned) portid);
+
+ /* init one TX queue on each port */
+ fflush(stdout);
+ ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
+ rte_eth_dev_socket_id(portid),
+ NULL);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
+ ret, (unsigned) portid);
+ /****************************************/
+ err=pthread_create(&t3,NULL,(void *)threadInit,NULL);
+ //thread for checking and updating the mac table
+ if(err!=0)
+ {
+ printf("thread not created\n");
+ exit(0);
+ }
+ /****************************************/
+ /* Start device */
+ ret = rte_eth_dev_start(portid);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
+ ret, (unsigned) portid);
+
+ printf("done: \n");
+
+ rte_eth_promiscuous_enable(portid);
+
+ printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
+ (unsigned) portid,
+ l2fwd_ports_eth_addr[portid].addr_bytes[0],
+ l2fwd_ports_eth_addr[portid].addr_bytes[1],
+ l2fwd_ports_eth_addr[portid].addr_bytes[2],
+ l2fwd_ports_eth_addr[portid].addr_bytes[3],
+ l2fwd_ports_eth_addr[portid].addr_bytes[4],
+ l2fwd_ports_eth_addr[portid].addr_bytes[5]);
+
+ /* initialize port stats */
+ memset(&port_statistics, 0, sizeof(port_statistics));
+ }
+
+ if (!nb_ports_available) {
+ rte_exit(EXIT_FAILURE,
+ "All available ports are disabled. Please set portmask.\n");
+ }
+
+ check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
+
+ /* launch per-lcore init on every lcore */
+ rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
+ RTE_LCORE_FOREACH_SLAVE(lcore_id) {
+ if (rte_eal_wait_lcore(lcore_id) < 0)
+ return -1;
+ }
+ //pthread_join(t1,NULL);
+ //pthread_join(t2,NULL);
+
+ return 0;
+}
--
1.9.1
^ permalink raw reply [flat|nested] 4+ messages in thread* [dpdk-dev] [PATCH] l2fwd:mac learning
@ 2016-10-03 5:27 Rafat Jahan
0 siblings, 0 replies; 4+ messages in thread
From: Rafat Jahan @ 2016-10-03 5:27 UTC (permalink / raw)
To: dev; +Cc: Rafat Jahan
Added MAC learning to reduce load at l2
Signed-off-by: Rafat Jahan <rafat.jahan@tcs.com>
---
examples/l2fwd-mac/Makefile | 50 ++
examples/l2fwd-mac/main.c | 1325 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 1375 insertions(+)
create mode 100644 examples/l2fwd-mac/Makefile
create mode 100644 examples/l2fwd-mac/main.c
diff --git a/examples/l2fwd-mac/Makefile b/examples/l2fwd-mac/Makefile
new file mode 100644
index 0000000..6ab93f4
--- /dev/null
+++ b/examples/l2fwd-mac/Makefile
@@ -0,0 +1,50 @@
+# BSD LICENSE
+#
+# Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in
+# the documentation and/or other materials provided with the
+# distribution.
+# * Neither the name of Intel Corporation nor the names of its
+# contributors may be used to endorse or promote products derived
+# from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ifeq ($(RTE_SDK),)
+$(error "Please define RTE_SDK environment variable")
+endif
+
+# Default target, can be overriden by command line or environment
+RTE_TARGET ?= x86_64-native-linuxapp-gcc
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+# binary name
+APP = l2fwd-mac
+
+# all source are stored in SRCS-y
+SRCS-y := main.c
+
+CFLAGS += -O3
+CFLAGS += $(WERROR_FLAGS)
+
+include $(RTE_SDK)/mk/rte.extapp.mk
diff --git a/examples/l2fwd-mac/main.c b/examples/l2fwd-mac/main.c
new file mode 100644
index 0000000..33d6a6e
--- /dev/null
+++ b/examples/l2fwd-mac/main.c
@@ -0,0 +1,1325 @@
+/*-thread created and in which two seperate threads for updation and checking are created infinately
+
+ final working code
+
+
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <pthread.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <sys/types.h>
+#include <sys/queue.h>
+#include <netinet/in.h>
+#include <setjmp.h>
+#include <stdarg.h>
+#include <ctype.h>
+#include <errno.h>
+#include <getopt.h>
+
+#include <rte_common.h>
+#include <rte_log.h>
+#include <rte_memory.h>
+#include <rte_memcpy.h>
+#include <rte_memzone.h>
+#include <rte_eal.h>
+#include <rte_per_lcore.h>
+#include <rte_launch.h>
+#include <rte_atomic.h>
+#include <rte_cycles.h>
+#include <rte_prefetch.h>
+#include <rte_lcore.h>
+#include <rte_per_lcore.h>
+#include <rte_branch_prediction.h>
+#include <rte_interrupts.h>
+#include <rte_pci.h>
+#include <rte_random.h>
+#include <rte_debug.h>
+#include <rte_ether.h>
+#include <rte_ethdev.h>
+#include <rte_ring.h>
+#include <rte_mempool.h>
+#include <rte_mbuf.h>
+#include <rte_ip.h>
+#include <rte_arp.h>
+
+#define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
+
+#define NB_MBUF 8192
+
+#define MAX_PKT_BURST 32
+#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
+
+#define default_aging_time 30
+pthread_mutex_t mutex1 = PTHREAD_MUTEX_INITIALIZER;
+/*
+ * Work-around of a compilation error with ICC on invocations of the
+ * rte_be_to_cpu_16() function.
+ */
+#ifdef __GCC__
+#define RTE_BE_TO_CPU_16(be_16_v) rte_be_to_cpu_16((be_16_v))
+#define RTE_CPU_TO_BE_16(cpu_16_v) rte_cpu_to_be_16((cpu_16_v))
+#else
+#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN
+#define RTE_BE_TO_CPU_16(be_16_v) (be_16_v)
+#define RTE_CPU_TO_BE_16(cpu_16_v) (cpu_16_v)
+#else
+#define RTE_BE_TO_CPU_16(be_16_v) \
+ (uint16_t) ((((be_16_v) & 0xFF) << 8) | ((be_16_v) >> 8))
+#define RTE_CPU_TO_BE_16(cpu_16_v) \
+ (uint16_t) ((((cpu_16_v) & 0xFF) << 8) | ((cpu_16_v) >> 8))
+#endif
+#endif /* __GCC__ */
+
+/*
+ * Configurable number of RX/TX ring descriptors
+ */
+#define RTE_TEST_RX_DESC_DEFAULT 128
+#define RTE_TEST_TX_DESC_DEFAULT 512
+static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
+static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
+
+/* ethernet addresses of ports */
+static struct ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
+
+/* mask of enabled ports */
+static uint32_t l2fwd_enabled_port_mask = 0;
+static int64_t l2fwd_user_defined_dst_port = 0;
+static int16_t l2fwd_mac_learning_enabled = 0;
+uint64_t total_duplicate_packets_dropped = 0;
+
+/* list of enabled ports */
+static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
+
+static unsigned int l2fwd_rx_queue_per_lcore = 1;
+
+void add_mac_entry(struct ether_hdr *eth,unsigned port);
+static void l2fwd_mac_ports_update(struct ether_hdr *eth,unsigned rxport);
+static void l2fwd_mac_display(void);
+static void l2fwd_show_mac_entry(void);
+void source_mac_table(struct ether_hdr *eth,unsigned port);
+void add_src_mac_entry(struct ether_hdr *eth,unsigned port);
+void update_aging(struct ether_hdr *eth);
+void *thread1(void);
+void *thread2(void);
+void *threadInit(void);
+
+
+struct node
+{
+ unsigned port;
+ struct ether_addr s_addr; /**< Source address. */
+ struct ether_addr d_addr; /**< Destination address. */
+ time_t starttime;
+ struct node *next;
+}*head = NULL;
+
+struct mac_list
+{
+ unsigned port;
+ struct ether_addr s_addr;
+ time_t rx_time;
+ char *buff;
+ int aging_time;
+ struct mac_list *next;
+}*start = NULL;
+
+
+struct mbuf_table {
+ unsigned len;
+ struct rte_mbuf *m_table[MAX_PKT_BURST];
+};
+
+void update_node(struct mac_list *ptr);
+#define MAX_RX_QUEUE_PER_LCORE 16
+#define MAX_TX_QUEUE_PER_PORT 16
+struct lcore_queue_conf {
+ unsigned n_rx_port;
+ unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
+ struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
+
+} __rte_cache_aligned;
+struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
+
+static const struct rte_eth_conf port_conf = {
+ .rxmode = {
+ .split_hdr_size = 0,
+ .header_split = 0, /**< Header Split disabled */
+ .hw_ip_checksum = 0, /**< IP checksum offload disabled */
+ .hw_vlan_filter = 0, /**< VLAN filtering disabled */
+ .jumbo_frame = 0, /**< Jumbo Frame Support disabled */
+ .hw_strip_crc = 0, /**< CRC stripped by hardware */
+ },
+ .txmode = {
+ .mq_mode = ETH_MQ_TX_NONE,
+ },
+};
+
+struct rte_mempool * l2fwd_pktmbuf_pool = NULL;
+
+/* Per-port statistics struct */
+struct l2fwd_port_statistics {
+ uint64_t tx;
+ uint64_t rx;
+ uint64_t dropped;
+} __rte_cache_aligned;
+struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
+
+/* A tsc-based timer responsible for triggering statistics printout */
+#define TIMER_MILLISECOND 2000000ULL /* around 1ms at 2 Ghz */
+#define MAX_TIMER_PERIOD 86400 /* 1 day max */
+static int64_t timer_period = 10 * TIMER_MILLISECOND * 1000; /* default period is 10 seconds */
+
+static inline void
+print_ether_addr(const char *what, struct ether_addr *eth_addr)
+{
+ char buf[ETHER_ADDR_FMT_SIZE];
+ ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
+ printf("%s%s", what, buf);
+}
+
+static void
+ipv4_addr_to_dot(uint32_t be_ipv4_addr, char *buf)
+{
+ uint32_t ipv4_addr;
+
+ ipv4_addr = rte_be_to_cpu_32(be_ipv4_addr);
+ sprintf(buf, "%d.%d.%d.%d", (ipv4_addr >> 24) & 0xFF,
+ (ipv4_addr >> 16) & 0xFF, (ipv4_addr >> 8) & 0xFF,
+ ipv4_addr & 0xFF);
+}
+
+static void
+ipv4_addr_dump(const char *what, uint32_t be_ipv4_addr)
+{
+ char buf[16];
+
+ ipv4_addr_to_dot(be_ipv4_addr, buf);
+ if (what)
+ printf("%s", what);
+ printf("%s", buf);
+}
+
+void add_mac_entry(struct ether_hdr *eth,unsigned port)
+{
+ struct node *new = NULL;
+ new = (struct node*)malloc(sizeof(struct node));
+ if(new == NULL)
+ {
+ printf("Memory not allocated for MAC database");
+ }
+
+ source_mac_table(eth,port);
+
+ new->port = port;
+ new->starttime = time(NULL);
+ ether_addr_copy(ð->s_addr, &new->s_addr);
+ ether_addr_copy(ð->d_addr, &new->d_addr);
+ if(head == NULL)
+ {
+ head = new;
+ head->next = NULL;
+
+ }
+ else
+ {
+ new->next = head;
+ head = new;
+
+ }
+}
+
+void source_mac_table(struct ether_hdr *eth,unsigned port)
+{
+
+ struct mac_list *ptr = NULL;
+ ptr = start;
+ if(start == NULL)
+ {
+ printf("Adding entry to the table\n");
+ add_src_mac_entry(eth,port);
+ }
+ else
+ {
+ while(ptr != NULL)
+ {
+ if (memcmp(ð->s_addr, &ptr->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+
+ ptr->rx_time=time(NULL);
+ ptr->aging_time=default_aging_time;
+ if(ptr->port != port )
+ {
+ ptr->port = port;
+ break;
+ }
+ else
+ break; // received from same mac
+ }
+ ptr = ptr->next;
+ }
+ if(ptr == NULL)
+ {
+ /*If the mac entry is not found in the table, then add the entry
+ to the mac table */
+ printf("Adding MAC entry to table\n");
+ add_src_mac_entry(eth,port);
+ }
+
+ }
+}
+
+void add_src_mac_entry(struct ether_hdr *eth,unsigned port)
+{
+ struct mac_list *new = NULL;
+ new = (struct mac_list*)malloc(sizeof(struct mac_list));
+ if(new == NULL)
+ {
+ printf("Memory not allocated for MAC database");
+ }
+ new->port = port;
+ ether_addr_copy(ð->s_addr, &new->s_addr);
+ new->rx_time=time(NULL);
+ new->aging_time=default_aging_time;
+ if(start == NULL)
+ {
+ start = new;
+ start->next = NULL;
+ }
+ else
+ {
+ new->next=start;
+ start=new;
+ }
+
+}
+
+/* Print out statistics on packets dropped */
+static void
+print_stats(void)
+{
+ uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
+ unsigned portid;
+
+ total_packets_dropped = 0;
+ total_packets_tx = 0;
+ total_packets_rx = 0;
+
+ const char clr[] = { 27, '[', '2', 'J', '\0' };
+ const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' };
+
+ /* Clear screen and move to top left */
+ printf("%s%s", clr, topLeft);
+
+ printf("\nPort statistics ====================================");
+
+ for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
+ /* skip disabled ports */
+ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
+ continue;
+ printf("\nStatistics for port %u ------------------------------"
+ "\nPackets sent: %24"PRIu64
+ "\nPackets received: %20"PRIu64
+ "\nPackets dropped: %21"PRIu64,
+ portid,
+ port_statistics[portid].tx,
+ port_statistics[portid].rx,
+ port_statistics[portid].dropped);
+
+ total_packets_dropped += port_statistics[portid].dropped;
+ total_packets_tx += port_statistics[portid].tx;
+ total_packets_rx += port_statistics[portid].rx;
+ }
+ printf("\nAggregate statistics ==============================="
+ "\nTotal packets sent: %18"PRIu64
+ "\nTotal packets received: %14"PRIu64
+ "\nTotal packets dropped: %15"PRIu64,
+ total_packets_tx,
+ total_packets_rx,
+ total_packets_dropped);
+ printf("\nTotal duplicate packets dropped: %5"PRIu64,
+ total_duplicate_packets_dropped);
+ printf("\n====================================================\n");
+}
+
+
+/* Send the burst of packets on an output interface */
+static int
+l2fwd_send_burst(struct lcore_queue_conf *qconf, unsigned n, uint8_t port)
+{
+ struct rte_mbuf **m_table;
+ unsigned ret;
+ unsigned queueid =0;
+
+ m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
+
+ ret = rte_eth_tx_burst(port, (uint16_t) queueid, m_table, (uint16_t) n);
+ port_statistics[port].tx += ret;
+ if (unlikely(ret < n)) {
+ port_statistics[port].dropped += (n - ret);
+ do {
+ rte_pktmbuf_free(m_table[ret]);
+ } while (++ret < n);
+ }
+
+ return 0;
+}
+
+/* Enqueue packets for TX and prepare them to be sent */
+static int
+l2fwd_send_packet(struct rte_mbuf *m, uint8_t port)
+{
+ unsigned lcore_id, len;
+ struct lcore_queue_conf *qconf;
+
+ lcore_id = rte_lcore_id();
+
+ qconf = &lcore_queue_conf[lcore_id];
+ len = qconf->tx_mbufs[port].len;
+ qconf->tx_mbufs[port].m_table[len] = m;
+ len++;
+
+ /* enough pkts to be sent */
+ if (unlikely(len == MAX_PKT_BURST)) {
+ l2fwd_send_burst(qconf, MAX_PKT_BURST, port);
+ len = 0;
+ }
+
+ qconf->tx_mbufs[port].len = len;
+ return 0;
+}
+static void l2fwd_mac_display(void)
+{
+ struct node *node = NULL;
+ printf("\n==============DEBUGGING MAC TABLE=================\n");
+ printf(" SMAC DMAC PORT \n");
+ node = head;
+ while(node != NULL)
+ {
+ print_ether_addr("", &node->s_addr);
+ print_ether_addr(" ",&node->d_addr);
+ printf(" %d\n",node->port);
+ node = node->next;
+ }
+ printf("========================================\n");
+}
+static void l2fwd_show_mac_entry(void)
+{
+ struct mac_list *node = NULL;
+ printf("\n==============MAC TABLE=================\n");
+ printf(" MAC PORT\taging time\n");
+ node = start;
+ while(node != NULL)
+ {
+ print_ether_addr("", &node->s_addr);
+ printf(" %d\t",node->port);
+ printf("%d\n",node->aging_time);
+
+ node = node->next;
+ }
+ printf("========================================\n");
+}
+static void l2fwd_mac_ports_update(struct ether_hdr *eth,unsigned rxport)
+{
+ struct node *ptr = NULL;
+ struct mac_list *ptr1 = NULL;
+
+ ptr = head;
+ while(ptr != NULL)
+ {
+ if (memcmp(ð->s_addr, &ptr->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+ ptr->port = rxport;
+ }
+ ptr = ptr->next;
+ }
+
+ ptr1 = start;
+ while(ptr1 != NULL)
+ {
+ if (memcmp(ð->s_addr, &ptr1->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+ ptr1->port = rxport;
+ ptr1->rx_time=time(NULL);
+ ptr1->aging_time=default_aging_time;
+ }
+ ptr1 = ptr1->next;
+ }
+
+}
+void update_aging(struct ether_hdr *eth)
+{
+ struct mac_list *ptr1=NULL;
+ ptr1 = start;
+ while(ptr1 != NULL)
+ {
+ if (memcmp(ð->s_addr, &ptr1->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+ ptr1->rx_time=time(NULL);
+ ptr1->aging_time=default_aging_time;
+ }
+ ptr1 = ptr1->next;
+ }
+}
+static void
+l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
+{
+ struct ether_hdr *eth;
+ void *tmp;
+ unsigned dst_port;
+ int currenttime,difference,timeout = 8;
+ //int err;
+ //pthread_t t1,t2;
+ dst_port = l2fwd_dst_ports[portid];
+ printf("---------- Forwarding Path ----------\n");
+ printf("Default forwarding dst port : %d\n",dst_port);
+
+ eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
+
+ if(l2fwd_user_defined_dst_port > 0)
+ {
+ dst_port = l2fwd_user_defined_dst_port;
+ printf("User defined dst Port : %d\n",dst_port);
+ printf("----------------------------------------\n");
+ printf("Forwarding path has been modified from default to user defined\n");
+ }
+ else if(l2fwd_mac_learning_enabled)
+ {
+ //l2fwd_mac_display();
+ //l2fwd_show_mac_entry();
+ //pthread_mutex_lock( &mutex1 );
+ struct node *ptr = NULL;
+ struct mac_list *temp = NULL;
+ ptr = head;
+ if(head == NULL)
+ {
+ printf("No MAC address exist in table , adding entry to the table\n");
+ add_mac_entry(eth,portid);
+ }
+ else
+ {
+ /* condition to check and overwrite the 'port' if the same mac address
+ was already received from another 'port' earlier*/
+ while(ptr != NULL)
+ {
+ if ((memcmp(ð->s_addr, &ptr->s_addr, ETHER_ADDR_LEN) == 0) &&
+ (memcmp(ð->d_addr, &ptr->d_addr, ETHER_ADDR_LEN) == 0))
+ {
+ // printf("----->same SMAC DMAC\n");
+ if(portid != ptr->port)
+ {
+ printf("port id is different %d\n",portid);
+ currenttime = time(NULL);
+ difference = currenttime - (ptr->starttime);
+ if(difference > timeout)
+ {
+ printf("----->difference %d\n",difference);
+ ptr->port = portid;
+ ptr->starttime = time(NULL);
+ l2fwd_mac_ports_update(eth,portid);
+ // add_mac_entry(eth,portid);
+ break;
+ } else {
+ printf("Detected duplication,packet dropped \n");
+ //duplicate packet
+ total_duplicate_packets_dropped++;
+ //need to check whether break is needed
+ // return;
+ }
+ }
+
+ ptr->starttime = time(NULL);
+ update_aging(eth);
+ // printf("---->received from same mac diff %d\n",difference);
+ break;
+ }
+ ptr = ptr->next;
+ }
+ if(ptr == NULL)
+ {
+ /*If the mac entry is not found in the table, then add the entry
+ to the mac table */
+ printf("Adding MAC entry to table\n");
+ add_mac_entry(eth,portid);
+ //l2fwd_mac_ports_update(eth,portid);
+ }
+ }
+
+
+ /* lookup to get the dst port if the mac entry is already present in the table*/
+ temp = start;
+ while(temp != NULL)
+ {
+ if (memcmp(ð->d_addr, &temp->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+ dst_port = temp->port;
+ printf("\n");
+ printf("dst port from table : %d\n",dst_port);
+ break;
+ }
+ temp = temp->next;
+ }
+ /*If the dst mac is not available,then forward the packet in dumping port*/
+ if(temp == NULL)
+ {
+ dst_port = 9;
+ printf("Dumping port : %d\n",dst_port);
+ }
+
+ }
+ else
+ {
+//========================================================
+ /* 02:00:00:00:00:xx */
+ tmp = ð->d_addr.addr_bytes[0];
+ *((uint64_t *)tmp) = 0xffffffffffff ;
+ //*((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
+
+ /* src addr */
+ ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], ð->s_addr);
+ }
+
+ printf("========================================\n");
+ l2fwd_mac_display();
+ l2fwd_show_mac_entry();
+ //pthread_mutex_unlock( &mutex1 );
+ l2fwd_send_packet(m, (uint8_t) dst_port);
+}
+
+/* main processing loop */
+static void
+l2fwd_main_loop(void)
+{
+ struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
+ struct rte_mbuf *m;
+ unsigned lcore_id;
+ uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
+ unsigned i, j, portid, nb_rx;
+ struct lcore_queue_conf *qconf;
+ const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
+ struct ether_hdr *eth_hdr;
+ uint16_t eth_type;
+ struct ipv4_hdr *ip_h;
+ int l2_len;
+ struct arp_hdr *arp_h;
+ uint32_t sip_addr,tip_addr;
+
+ prev_tsc = 0;
+ timer_tsc = 0;
+
+ lcore_id = rte_lcore_id();
+ qconf = &lcore_queue_conf[lcore_id];
+
+ if (qconf->n_rx_port == 0) {
+ RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
+ return;
+ }
+
+ RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
+
+ for (i = 0; i < qconf->n_rx_port; i++) {
+
+ portid = qconf->rx_port_list[i];
+ RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
+ portid);
+ }
+
+ while (1) {
+
+ cur_tsc = rte_rdtsc();
+
+ /*
+ * TX burst queue drain
+ */
+ diff_tsc = cur_tsc - prev_tsc;
+ if (unlikely(diff_tsc > drain_tsc)) {
+
+ for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
+ if (qconf->tx_mbufs[portid].len == 0)
+ continue;
+ l2fwd_send_burst(&lcore_queue_conf[lcore_id],
+ qconf->tx_mbufs[portid].len,
+ (uint8_t) portid);
+ qconf->tx_mbufs[portid].len = 0;
+ }
+
+ /* if timer is enabled */
+ if (timer_period > 0) {
+
+ /* advance the timer */
+ timer_tsc += diff_tsc;
+
+ /* if timer has reached its timeout */
+ if (unlikely(timer_tsc >= (uint64_t) timer_period)) {
+
+ /* do this only on master core */
+ if (lcore_id == rte_get_master_lcore()) {
+ print_stats();
+ /* reset the timer */
+ timer_tsc = 0;
+ }
+ }
+ }
+
+ prev_tsc = cur_tsc;
+ }
+
+ /*
+ * Read packet from RX queues
+ */
+ for (i = 0; i < qconf->n_rx_port; i++) {
+
+ portid = qconf->rx_port_list[i];
+ nb_rx = rte_eth_rx_burst((uint8_t) portid, 0,
+ pkts_burst, MAX_PKT_BURST);
+
+ if(nb_rx == 0)
+ continue;
+ port_statistics[portid].rx += nb_rx;
+
+ for (j = 0; j < nb_rx; j++) {
+ m = pkts_burst[j];
+ rte_prefetch0(rte_pktmbuf_mtod(m, void *));
+
+ eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
+ eth_type = RTE_BE_TO_CPU_16(eth_hdr->ether_type);
+ l2_len = sizeof(struct ether_hdr);
+
+ //if (eth_type != ETHER_TYPE_IPv4) {
+ // rte_pktmbuf_free(m);
+ // continue;
+ //}
+
+ printf("========================================\n");
+ printf("Packet received on port :%d\n",portid);
+ printf("------------ L2 Details------------\n");
+ print_ether_addr(" Source MAC : ", ð_hdr->s_addr);
+ print_ether_addr("\n Destination MAC : ", ð_hdr->d_addr);
+ printf("\n Port : %d"
+ "\n Ethernet Type : 0x%04x"
+ "\n Length : %u "
+ "\n Nb_segs : %d",
+ portid,
+ eth_type,
+ (unsigned) m->pkt_len,
+ (int)m->nb_segs);
+ printf("\n");
+
+ if (eth_type == ETHER_TYPE_ARP)
+ {
+ arp_h = (struct arp_hdr *) ((char *)eth_hdr + l2_len);
+ sip_addr = arp_h->arp_data.arp_sip;
+ tip_addr = arp_h->arp_data.arp_tip;
+ } else
+ {
+ if (eth_type != ETHER_TYPE_IPv4) {
+ rte_pktmbuf_free(m);
+ continue;
+ }
+ ip_h = (struct ipv4_hdr *) ((char *)eth_hdr + l2_len);
+ sip_addr = ip_h->src_addr;
+ tip_addr = ip_h->dst_addr;
+ }
+ printf("------------ L3 Details------------\n");
+ ipv4_addr_dump(" Source IP : ", sip_addr);
+ ipv4_addr_dump("\n Destination IP : ", tip_addr);
+ printf("\n");
+
+ l2fwd_simple_forward(m, portid);
+ }
+ }
+ }
+}
+
+static int
+l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
+{
+ l2fwd_main_loop();
+ return 0;
+}
+
+/* display usage */
+static void
+l2fwd_usage(const char *prgname)
+{
+ printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
+ " -p PORTMASK: hexadecimal bitmask of ports to configure\n"
+ " -q NQ: number of queue (=ports) per lcore (default is 1)\n"
+ " -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
+ " -d DST PORT: user input to select the destination port\n"
+ " -l MAC LEARNING: enable l2fwd mac learning 1-enable : 0 - disable(default) \n",
+ prgname);
+}
+
+static int
+l2fwd_parse_portmask(const char *portmask)
+{
+ char *end = NULL;
+ unsigned long pm;
+
+ /* parse hexadecimal string */
+ pm = strtoul(portmask, &end, 16);
+ if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return -1;
+
+ if (pm == 0)
+ return -1;
+
+ return pm;
+}
+
+static unsigned int
+l2fwd_parse_nqueue(const char *q_arg)
+{
+ char *end = NULL;
+ unsigned long n;
+
+ /* parse hexadecimal string */
+ n = strtoul(q_arg, &end, 10);
+ if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return 0;
+ if (n == 0)
+ return 0;
+ if (n >= MAX_RX_QUEUE_PER_LCORE)
+ return 0;
+
+ return n;
+}
+
+static int
+l2fwd_parse_timer_period(const char *q_arg)
+{
+ char *end = NULL;
+ int n;
+
+ /* parse number string */
+ n = strtol(q_arg, &end, 10);
+ if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return -1;
+ if (n >= MAX_TIMER_PERIOD)
+ return -1;
+
+ return n;
+}
+
+static int
+pktcap_parse_dst_port(const char *q_arg)
+{
+ char *end = NULL;
+ int n;
+
+ /* parse number string */
+ n = strtol(q_arg, &end, 10);
+ if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return -1;
+ if (n > RTE_MAX_ETHPORTS)
+ return -1;
+
+ return n;
+}
+
+static int
+l2fwd_parse_mac_learning(const char *q_arg)
+{
+ char *end = NULL;
+ int n;
+
+ /* parse number string */
+ n = strtol(q_arg, &end, 0);
+ if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return -1;
+ if (n > 1)
+ return -1;
+
+ return n;
+}
+/* Parse the argument given in the command line of the application */
+static int
+l2fwd_parse_args(int argc, char **argv)
+{
+ int opt, ret;
+ char **argvopt;
+ int option_index;
+ char *prgname = argv[0];
+ static struct option lgopts[] = {
+ {NULL, 0, 0, 0}
+ };
+
+ argvopt = argv;
+
+ while ((opt = getopt_long(argc, argvopt, "p:q:T:d:l:",
+ lgopts, &option_index)) != EOF) {
+
+ switch (opt) {
+ /* portmask */
+ case 'p':
+ l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
+ if (l2fwd_enabled_port_mask == 0) {
+ printf("invalid portmask\n");
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ break;
+
+ /* nqueue */
+ case 'q':
+ l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
+ if (l2fwd_rx_queue_per_lcore == 0) {
+ printf("invalid queue number\n");
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ break;
+
+ /* timer period */
+ case 'T':
+ timer_period = l2fwd_parse_timer_period(optarg) * 1000 * TIMER_MILLISECOND;
+ if (timer_period < 0) {
+ printf("invalid timer period\n");
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ break;
+
+ /* user defined dst port*/
+ case 'd':
+ l2fwd_user_defined_dst_port = pktcap_parse_dst_port(optarg);
+ if (l2fwd_user_defined_dst_port < 0) {
+ printf("invalid port number\n");
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ break;
+
+ /* l2 mac learning*/
+ case 'l':
+ l2fwd_mac_learning_enabled = l2fwd_parse_mac_learning(optarg);
+ if (l2fwd_mac_learning_enabled < 0) {
+ printf("invalid option\n");
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ break;
+ /* long options */
+ case 0:
+ l2fwd_usage(prgname);
+ return -1;
+
+ default:
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ }
+
+ if (optind >= 0)
+ argv[optind-1] = prgname;
+
+ ret = optind-1;
+ optind = 0; /* reset getopt lib */
+ return ret;
+}
+
+/* Check the link status of all ports in up to 9s, and print them finally */
+static void
+check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
+{
+#define CHECK_INTERVAL 100 /* 100ms */
+#define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
+ uint8_t portid, count, all_ports_up, print_flag = 0;
+ struct rte_eth_link link;
+
+ printf("\nChecking link status");
+ fflush(stdout);
+ for (count = 0; count <= MAX_CHECK_TIME; count++) {
+ all_ports_up = 1;
+ for (portid = 0; portid < port_num; portid++) {
+ if ((port_mask & (1 << portid)) == 0)
+ continue;
+ memset(&link, 0, sizeof(link));
+ rte_eth_link_get_nowait(portid, &link);
+ /* print link status if flag set */
+ if (print_flag == 1) {
+ if (link.link_status)
+ printf("Port %d Link Up - speed %u "
+ "Mbps - %s\n", (uint8_t)portid,
+ (unsigned)link.link_speed,
+ (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
+ ("full-duplex") : ("half-duplex\n"));
+ else
+ printf("Port %d Link Down\n",
+ (uint8_t)portid);
+ continue;
+ }
+ /* clear all_ports_up flag if any link down */
+ if (link.link_status == 0) {
+ all_ports_up = 0;
+ break;
+ }
+ }
+ /* after finally printing all link status, get out */
+ if (print_flag == 1)
+ break;
+
+ if (all_ports_up == 0) {
+ printf(".");
+ fflush(stdout);
+ rte_delay_ms(CHECK_INTERVAL);
+ }
+
+ /* set the print_flag if all ports up or timeout */
+ if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
+ print_flag = 1;
+ printf("done\n");
+ }
+ }
+}
+
+void *thread2(void)
+{
+ if(start!=NULL)
+ {
+
+ pthread_mutex_lock( &mutex1 );
+ struct mac_list *temp=start;
+ while(temp!=NULL)
+ {
+ if(temp->aging_time>0)
+ temp->aging_time=default_aging_time-(time(NULL)-temp->rx_time);
+ //strcpy(temp->buff,"check");
+ temp=temp->next;
+ }
+ pthread_mutex_unlock( &mutex1 );
+ }
+ pthread_exit(NULL);
+ return NULL;
+}
+
+void update_node(struct mac_list *l_temp)
+{
+ struct node *temp,*temp2,*prev;
+ if(head!=NULL)
+ {
+ while(head!=NULL)
+ {
+ if(memcmp(&l_temp->s_addr, &head->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+ temp=head;
+ head=head->next;
+ free(temp);
+ }
+ else
+ break;
+ }
+ // if(head!=NULL)
+ temp=head->next;
+ prev=head;
+ while(temp!=NULL && head!=NULL)
+ {
+ if(memcmp(&l_temp->s_addr, &temp->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+ prev->next=temp->next;
+ temp2=temp;
+ temp=temp->next;
+ free(temp2);
+ }
+ else
+ {
+ temp=temp->next;
+ prev=prev->next;
+ }
+ }
+ }
+
+
+}
+
+
+void *thread1(void)
+{
+ struct mac_list *temp,*temp2,*prev;
+
+ if(start!=NULL)
+ {
+
+ pthread_mutex_lock( &mutex1 );
+ while(start!=NULL)
+ {
+ if( start->aging_time==0)
+ {
+ temp = start;
+ update_node(temp);
+ start=start->next;
+ free(temp);
+
+ }
+ else
+ break;
+ }
+ // if(start!=NULL)
+ temp = start->next;
+ prev=start;
+ while(temp!= NULL && start!=NULL)
+ {
+
+ if(temp->aging_time==0)
+ {
+ update_node(temp);
+ prev->next=temp->next;
+ temp2=temp;
+ temp=temp->next;
+ if(temp2!=NULL)
+ free(temp2);
+ }
+ else
+ {
+ temp = temp->next;
+ prev=prev->next;
+ }
+ }
+ pthread_mutex_unlock( &mutex1 );
+ }
+ pthread_exit(NULL);
+ return NULL;
+}
+void *threadInit(void)
+{
+ pthread_t t1,t2;
+ int err;
+ while(1)
+ {
+ err=pthread_create(&t1, NULL,(void *)thread1,NULL);//for checking the mac table
+ pthread_join(t1,NULL);
+
+
+ err=pthread_create(&t2,NULL,(void *)thread2,NULL);//for updating the mac table
+ pthread_join(t2,NULL);
+
+ if(err!=0)
+ {
+ printf("thread not created\n");
+ exit(0);
+ }
+ }
+ return NULL;
+}
+
+int
+main(int argc, char **argv)
+{
+ struct lcore_queue_conf *qconf;
+ struct rte_eth_dev_info dev_info;
+ int ret,err;
+ uint8_t nb_ports;
+ uint8_t nb_ports_available;
+ uint8_t portid, last_port;
+ unsigned lcore_id, rx_lcore_id;
+ unsigned nb_ports_in_mask = 0;
+ pthread_t t3;
+ /* init EAL */
+ ret = rte_eal_init(argc, argv);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
+ argc -= ret;
+ argv += ret;
+
+ /* parse application arguments (after the EAL ones) */
+ ret = l2fwd_parse_args(argc, argv);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
+
+ /* create the mbuf pool */
+ l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32,
+ 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
+ if (l2fwd_pktmbuf_pool == NULL)
+ rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
+
+ nb_ports = rte_eth_dev_count();
+ if (nb_ports == 0)
+ rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
+
+ if (nb_ports > RTE_MAX_ETHPORTS)
+ nb_ports = RTE_MAX_ETHPORTS;
+
+ /* reset l2fwd_dst_ports */
+ for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
+ l2fwd_dst_ports[portid] = 0;
+ last_port = 0;
+
+ printf("Entered port : %" PRId64 "\n",l2fwd_user_defined_dst_port);
+
+ /*
+ * Each logical core is assigned a dedicated TX queue on each port.
+ */
+ if(l2fwd_user_defined_dst_port == 0)
+ {
+ for (portid = 0; portid < nb_ports; portid++) {
+ /* skip ports that are not enabled */
+ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
+ continue;
+
+ if (nb_ports_in_mask % 2) {
+ l2fwd_dst_ports[portid] = last_port;
+ l2fwd_dst_ports[last_port] = portid;
+ }
+ else
+ last_port = portid;
+
+ nb_ports_in_mask++;
+
+ rte_eth_dev_info_get(portid, &dev_info);
+ }
+ if (nb_ports_in_mask % 2) {
+ printf("Notice: odd number of ports in portmask.\n");
+ l2fwd_dst_ports[last_port] = last_port;
+ }
+
+ }
+ rx_lcore_id = 0;
+ qconf = NULL;
+
+ /* Initialize the port/queue configuration of each logical core */
+ for (portid = 0; portid < nb_ports; portid++) {
+ /* skip ports that are not enabled */
+ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
+ continue;
+
+ /* get the lcore_id for this port */
+ while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
+ lcore_queue_conf[rx_lcore_id].n_rx_port ==
+ l2fwd_rx_queue_per_lcore) {
+ rx_lcore_id++;
+ if (rx_lcore_id >= RTE_MAX_LCORE)
+ rte_exit(EXIT_FAILURE, "Not enough cores\n");
+ }
+
+ if (qconf != &lcore_queue_conf[rx_lcore_id])
+ /* Assigned a new logical core in the loop above. */
+ qconf = &lcore_queue_conf[rx_lcore_id];
+
+ qconf->rx_port_list[qconf->n_rx_port] = portid;
+ qconf->n_rx_port++;
+ printf("Lcore %u: RX port %u\n", rx_lcore_id, (unsigned) portid);
+ }
+
+ nb_ports_available = nb_ports;
+
+ /* Initialise each port */
+ for (portid = 0; portid < nb_ports; portid++) {
+ /* skip ports that are not enabled */
+ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
+ printf("Skipping disabled port %u\n", (unsigned) portid);
+ nb_ports_available--;
+ continue;
+ }
+ /* init port */
+ printf("Initializing port %u... ", (unsigned) portid);
+ fflush(stdout);
+ ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
+ ret, (unsigned) portid);
+
+ rte_eth_macaddr_get(portid,&l2fwd_ports_eth_addr[portid]);
+
+ /* init one RX queue */
+ fflush(stdout);
+ ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
+ rte_eth_dev_socket_id(portid),
+ NULL,
+ l2fwd_pktmbuf_pool);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
+ ret, (unsigned) portid);
+
+ /* init one TX queue on each port */
+ fflush(stdout);
+ ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
+ rte_eth_dev_socket_id(portid),
+ NULL);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
+ ret, (unsigned) portid);
+ /****************************************/
+ err=pthread_create(&t3,NULL,(void *)threadInit,NULL);
+ //thread for checking and updating the mac table
+ if(err!=0)
+ {
+ printf("thread not created\n");
+ exit(0);
+ }
+ /****************************************/
+ /* Start device */
+ ret = rte_eth_dev_start(portid);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
+ ret, (unsigned) portid);
+
+ printf("done: \n");
+
+ rte_eth_promiscuous_enable(portid);
+
+ printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
+ (unsigned) portid,
+ l2fwd_ports_eth_addr[portid].addr_bytes[0],
+ l2fwd_ports_eth_addr[portid].addr_bytes[1],
+ l2fwd_ports_eth_addr[portid].addr_bytes[2],
+ l2fwd_ports_eth_addr[portid].addr_bytes[3],
+ l2fwd_ports_eth_addr[portid].addr_bytes[4],
+ l2fwd_ports_eth_addr[portid].addr_bytes[5]);
+
+ /* initialize port stats */
+ memset(&port_statistics, 0, sizeof(port_statistics));
+ }
+
+ if (!nb_ports_available) {
+ rte_exit(EXIT_FAILURE,
+ "All available ports are disabled. Please set portmask.\n");
+ }
+
+ check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
+
+ /* launch per-lcore init on every lcore */
+ rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
+ RTE_LCORE_FOREACH_SLAVE(lcore_id) {
+ if (rte_eal_wait_lcore(lcore_id) < 0)
+ return -1;
+ }
+ //pthread_join(t1,NULL);
+ //pthread_join(t2,NULL);
+
+ return 0;
+}
--
1.9.1
^ permalink raw reply [flat|nested] 4+ messages in thread* [dpdk-dev] [PATCH] l2fwd:mac learning
@ 2016-10-03 5:25 Rafat Jahan
0 siblings, 0 replies; 4+ messages in thread
From: Rafat Jahan @ 2016-10-03 5:25 UTC (permalink / raw)
To: dev; +Cc: Rafat Jahan
Added MAC learning to reduce load at l2
Signed-off-by: Rafat Jahan <rafat.jahan@tcs.com>
---
examples/l2fwd-mac/Makefile | 50 ++
examples/l2fwd-mac/main.c | 1325 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 1375 insertions(+)
create mode 100644 examples/l2fwd-mac/Makefile
create mode 100644 examples/l2fwd-mac/main.c
diff --git a/examples/l2fwd-mac/Makefile b/examples/l2fwd-mac/Makefile
new file mode 100644
index 0000000..6ab93f4
--- /dev/null
+++ b/examples/l2fwd-mac/Makefile
@@ -0,0 +1,50 @@
+# BSD LICENSE
+#
+# Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in
+# the documentation and/or other materials provided with the
+# distribution.
+# * Neither the name of Intel Corporation nor the names of its
+# contributors may be used to endorse or promote products derived
+# from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ifeq ($(RTE_SDK),)
+$(error "Please define RTE_SDK environment variable")
+endif
+
+# Default target, can be overriden by command line or environment
+RTE_TARGET ?= x86_64-native-linuxapp-gcc
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+# binary name
+APP = l2fwd-mac
+
+# all source are stored in SRCS-y
+SRCS-y := main.c
+
+CFLAGS += -O3
+CFLAGS += $(WERROR_FLAGS)
+
+include $(RTE_SDK)/mk/rte.extapp.mk
diff --git a/examples/l2fwd-mac/main.c b/examples/l2fwd-mac/main.c
new file mode 100644
index 0000000..33d6a6e
--- /dev/null
+++ b/examples/l2fwd-mac/main.c
@@ -0,0 +1,1325 @@
+/*-thread created and in which two seperate threads for updation and checking are created infinately
+
+ final working code
+
+
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <pthread.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <sys/types.h>
+#include <sys/queue.h>
+#include <netinet/in.h>
+#include <setjmp.h>
+#include <stdarg.h>
+#include <ctype.h>
+#include <errno.h>
+#include <getopt.h>
+
+#include <rte_common.h>
+#include <rte_log.h>
+#include <rte_memory.h>
+#include <rte_memcpy.h>
+#include <rte_memzone.h>
+#include <rte_eal.h>
+#include <rte_per_lcore.h>
+#include <rte_launch.h>
+#include <rte_atomic.h>
+#include <rte_cycles.h>
+#include <rte_prefetch.h>
+#include <rte_lcore.h>
+#include <rte_per_lcore.h>
+#include <rte_branch_prediction.h>
+#include <rte_interrupts.h>
+#include <rte_pci.h>
+#include <rte_random.h>
+#include <rte_debug.h>
+#include <rte_ether.h>
+#include <rte_ethdev.h>
+#include <rte_ring.h>
+#include <rte_mempool.h>
+#include <rte_mbuf.h>
+#include <rte_ip.h>
+#include <rte_arp.h>
+
+#define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
+
+#define NB_MBUF 8192
+
+#define MAX_PKT_BURST 32
+#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
+
+#define default_aging_time 30
+pthread_mutex_t mutex1 = PTHREAD_MUTEX_INITIALIZER;
+/*
+ * Work-around of a compilation error with ICC on invocations of the
+ * rte_be_to_cpu_16() function.
+ */
+#ifdef __GCC__
+#define RTE_BE_TO_CPU_16(be_16_v) rte_be_to_cpu_16((be_16_v))
+#define RTE_CPU_TO_BE_16(cpu_16_v) rte_cpu_to_be_16((cpu_16_v))
+#else
+#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN
+#define RTE_BE_TO_CPU_16(be_16_v) (be_16_v)
+#define RTE_CPU_TO_BE_16(cpu_16_v) (cpu_16_v)
+#else
+#define RTE_BE_TO_CPU_16(be_16_v) \
+ (uint16_t) ((((be_16_v) & 0xFF) << 8) | ((be_16_v) >> 8))
+#define RTE_CPU_TO_BE_16(cpu_16_v) \
+ (uint16_t) ((((cpu_16_v) & 0xFF) << 8) | ((cpu_16_v) >> 8))
+#endif
+#endif /* __GCC__ */
+
+/*
+ * Configurable number of RX/TX ring descriptors
+ */
+#define RTE_TEST_RX_DESC_DEFAULT 128
+#define RTE_TEST_TX_DESC_DEFAULT 512
+static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
+static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
+
+/* ethernet addresses of ports */
+static struct ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
+
+/* mask of enabled ports */
+static uint32_t l2fwd_enabled_port_mask = 0;
+static int64_t l2fwd_user_defined_dst_port = 0;
+static int16_t l2fwd_mac_learning_enabled = 0;
+uint64_t total_duplicate_packets_dropped = 0;
+
+/* list of enabled ports */
+static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
+
+static unsigned int l2fwd_rx_queue_per_lcore = 1;
+
+void add_mac_entry(struct ether_hdr *eth,unsigned port);
+static void l2fwd_mac_ports_update(struct ether_hdr *eth,unsigned rxport);
+static void l2fwd_mac_display(void);
+static void l2fwd_show_mac_entry(void);
+void source_mac_table(struct ether_hdr *eth,unsigned port);
+void add_src_mac_entry(struct ether_hdr *eth,unsigned port);
+void update_aging(struct ether_hdr *eth);
+void *thread1(void);
+void *thread2(void);
+void *threadInit(void);
+
+
+struct node
+{
+ unsigned port;
+ struct ether_addr s_addr; /**< Source address. */
+ struct ether_addr d_addr; /**< Destination address. */
+ time_t starttime;
+ struct node *next;
+}*head = NULL;
+
+struct mac_list
+{
+ unsigned port;
+ struct ether_addr s_addr;
+ time_t rx_time;
+ char *buff;
+ int aging_time;
+ struct mac_list *next;
+}*start = NULL;
+
+
+struct mbuf_table {
+ unsigned len;
+ struct rte_mbuf *m_table[MAX_PKT_BURST];
+};
+
+void update_node(struct mac_list *ptr);
+#define MAX_RX_QUEUE_PER_LCORE 16
+#define MAX_TX_QUEUE_PER_PORT 16
+struct lcore_queue_conf {
+ unsigned n_rx_port;
+ unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
+ struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
+
+} __rte_cache_aligned;
+struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
+
+static const struct rte_eth_conf port_conf = {
+ .rxmode = {
+ .split_hdr_size = 0,
+ .header_split = 0, /**< Header Split disabled */
+ .hw_ip_checksum = 0, /**< IP checksum offload disabled */
+ .hw_vlan_filter = 0, /**< VLAN filtering disabled */
+ .jumbo_frame = 0, /**< Jumbo Frame Support disabled */
+ .hw_strip_crc = 0, /**< CRC stripped by hardware */
+ },
+ .txmode = {
+ .mq_mode = ETH_MQ_TX_NONE,
+ },
+};
+
+struct rte_mempool * l2fwd_pktmbuf_pool = NULL;
+
+/* Per-port statistics struct */
+struct l2fwd_port_statistics {
+ uint64_t tx;
+ uint64_t rx;
+ uint64_t dropped;
+} __rte_cache_aligned;
+struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
+
+/* A tsc-based timer responsible for triggering statistics printout */
+#define TIMER_MILLISECOND 2000000ULL /* around 1ms at 2 Ghz */
+#define MAX_TIMER_PERIOD 86400 /* 1 day max */
+static int64_t timer_period = 10 * TIMER_MILLISECOND * 1000; /* default period is 10 seconds */
+
+static inline void
+print_ether_addr(const char *what, struct ether_addr *eth_addr)
+{
+ char buf[ETHER_ADDR_FMT_SIZE];
+ ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
+ printf("%s%s", what, buf);
+}
+
+static void
+ipv4_addr_to_dot(uint32_t be_ipv4_addr, char *buf)
+{
+ uint32_t ipv4_addr;
+
+ ipv4_addr = rte_be_to_cpu_32(be_ipv4_addr);
+ sprintf(buf, "%d.%d.%d.%d", (ipv4_addr >> 24) & 0xFF,
+ (ipv4_addr >> 16) & 0xFF, (ipv4_addr >> 8) & 0xFF,
+ ipv4_addr & 0xFF);
+}
+
+static void
+ipv4_addr_dump(const char *what, uint32_t be_ipv4_addr)
+{
+ char buf[16];
+
+ ipv4_addr_to_dot(be_ipv4_addr, buf);
+ if (what)
+ printf("%s", what);
+ printf("%s", buf);
+}
+
+void add_mac_entry(struct ether_hdr *eth,unsigned port)
+{
+ struct node *new = NULL;
+ new = (struct node*)malloc(sizeof(struct node));
+ if(new == NULL)
+ {
+ printf("Memory not allocated for MAC database");
+ }
+
+ source_mac_table(eth,port);
+
+ new->port = port;
+ new->starttime = time(NULL);
+ ether_addr_copy(ð->s_addr, &new->s_addr);
+ ether_addr_copy(ð->d_addr, &new->d_addr);
+ if(head == NULL)
+ {
+ head = new;
+ head->next = NULL;
+
+ }
+ else
+ {
+ new->next = head;
+ head = new;
+
+ }
+}
+
+void source_mac_table(struct ether_hdr *eth,unsigned port)
+{
+
+ struct mac_list *ptr = NULL;
+ ptr = start;
+ if(start == NULL)
+ {
+ printf("Adding entry to the table\n");
+ add_src_mac_entry(eth,port);
+ }
+ else
+ {
+ while(ptr != NULL)
+ {
+ if (memcmp(ð->s_addr, &ptr->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+
+ ptr->rx_time=time(NULL);
+ ptr->aging_time=default_aging_time;
+ if(ptr->port != port )
+ {
+ ptr->port = port;
+ break;
+ }
+ else
+ break; // received from same mac
+ }
+ ptr = ptr->next;
+ }
+ if(ptr == NULL)
+ {
+ /*If the mac entry is not found in the table, then add the entry
+ to the mac table */
+ printf("Adding MAC entry to table\n");
+ add_src_mac_entry(eth,port);
+ }
+
+ }
+}
+
+void add_src_mac_entry(struct ether_hdr *eth,unsigned port)
+{
+ struct mac_list *new = NULL;
+ new = (struct mac_list*)malloc(sizeof(struct mac_list));
+ if(new == NULL)
+ {
+ printf("Memory not allocated for MAC database");
+ }
+ new->port = port;
+ ether_addr_copy(ð->s_addr, &new->s_addr);
+ new->rx_time=time(NULL);
+ new->aging_time=default_aging_time;
+ if(start == NULL)
+ {
+ start = new;
+ start->next = NULL;
+ }
+ else
+ {
+ new->next=start;
+ start=new;
+ }
+
+}
+
+/* Print out statistics on packets dropped */
+static void
+print_stats(void)
+{
+ uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
+ unsigned portid;
+
+ total_packets_dropped = 0;
+ total_packets_tx = 0;
+ total_packets_rx = 0;
+
+ const char clr[] = { 27, '[', '2', 'J', '\0' };
+ const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' };
+
+ /* Clear screen and move to top left */
+ printf("%s%s", clr, topLeft);
+
+ printf("\nPort statistics ====================================");
+
+ for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
+ /* skip disabled ports */
+ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
+ continue;
+ printf("\nStatistics for port %u ------------------------------"
+ "\nPackets sent: %24"PRIu64
+ "\nPackets received: %20"PRIu64
+ "\nPackets dropped: %21"PRIu64,
+ portid,
+ port_statistics[portid].tx,
+ port_statistics[portid].rx,
+ port_statistics[portid].dropped);
+
+ total_packets_dropped += port_statistics[portid].dropped;
+ total_packets_tx += port_statistics[portid].tx;
+ total_packets_rx += port_statistics[portid].rx;
+ }
+ printf("\nAggregate statistics ==============================="
+ "\nTotal packets sent: %18"PRIu64
+ "\nTotal packets received: %14"PRIu64
+ "\nTotal packets dropped: %15"PRIu64,
+ total_packets_tx,
+ total_packets_rx,
+ total_packets_dropped);
+ printf("\nTotal duplicate packets dropped: %5"PRIu64,
+ total_duplicate_packets_dropped);
+ printf("\n====================================================\n");
+}
+
+
+/* Send the burst of packets on an output interface */
+static int
+l2fwd_send_burst(struct lcore_queue_conf *qconf, unsigned n, uint8_t port)
+{
+ struct rte_mbuf **m_table;
+ unsigned ret;
+ unsigned queueid =0;
+
+ m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
+
+ ret = rte_eth_tx_burst(port, (uint16_t) queueid, m_table, (uint16_t) n);
+ port_statistics[port].tx += ret;
+ if (unlikely(ret < n)) {
+ port_statistics[port].dropped += (n - ret);
+ do {
+ rte_pktmbuf_free(m_table[ret]);
+ } while (++ret < n);
+ }
+
+ return 0;
+}
+
+/* Enqueue packets for TX and prepare them to be sent */
+static int
+l2fwd_send_packet(struct rte_mbuf *m, uint8_t port)
+{
+ unsigned lcore_id, len;
+ struct lcore_queue_conf *qconf;
+
+ lcore_id = rte_lcore_id();
+
+ qconf = &lcore_queue_conf[lcore_id];
+ len = qconf->tx_mbufs[port].len;
+ qconf->tx_mbufs[port].m_table[len] = m;
+ len++;
+
+ /* enough pkts to be sent */
+ if (unlikely(len == MAX_PKT_BURST)) {
+ l2fwd_send_burst(qconf, MAX_PKT_BURST, port);
+ len = 0;
+ }
+
+ qconf->tx_mbufs[port].len = len;
+ return 0;
+}
+static void l2fwd_mac_display(void)
+{
+ struct node *node = NULL;
+ printf("\n==============DEBUGGING MAC TABLE=================\n");
+ printf(" SMAC DMAC PORT \n");
+ node = head;
+ while(node != NULL)
+ {
+ print_ether_addr("", &node->s_addr);
+ print_ether_addr(" ",&node->d_addr);
+ printf(" %d\n",node->port);
+ node = node->next;
+ }
+ printf("========================================\n");
+}
+static void l2fwd_show_mac_entry(void)
+{
+ struct mac_list *node = NULL;
+ printf("\n==============MAC TABLE=================\n");
+ printf(" MAC PORT\taging time\n");
+ node = start;
+ while(node != NULL)
+ {
+ print_ether_addr("", &node->s_addr);
+ printf(" %d\t",node->port);
+ printf("%d\n",node->aging_time);
+
+ node = node->next;
+ }
+ printf("========================================\n");
+}
+static void l2fwd_mac_ports_update(struct ether_hdr *eth,unsigned rxport)
+{
+ struct node *ptr = NULL;
+ struct mac_list *ptr1 = NULL;
+
+ ptr = head;
+ while(ptr != NULL)
+ {
+ if (memcmp(ð->s_addr, &ptr->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+ ptr->port = rxport;
+ }
+ ptr = ptr->next;
+ }
+
+ ptr1 = start;
+ while(ptr1 != NULL)
+ {
+ if (memcmp(ð->s_addr, &ptr1->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+ ptr1->port = rxport;
+ ptr1->rx_time=time(NULL);
+ ptr1->aging_time=default_aging_time;
+ }
+ ptr1 = ptr1->next;
+ }
+
+}
+void update_aging(struct ether_hdr *eth)
+{
+ struct mac_list *ptr1=NULL;
+ ptr1 = start;
+ while(ptr1 != NULL)
+ {
+ if (memcmp(ð->s_addr, &ptr1->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+ ptr1->rx_time=time(NULL);
+ ptr1->aging_time=default_aging_time;
+ }
+ ptr1 = ptr1->next;
+ }
+}
+static void
+l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
+{
+ struct ether_hdr *eth;
+ void *tmp;
+ unsigned dst_port;
+ int currenttime,difference,timeout = 8;
+ //int err;
+ //pthread_t t1,t2;
+ dst_port = l2fwd_dst_ports[portid];
+ printf("---------- Forwarding Path ----------\n");
+ printf("Default forwarding dst port : %d\n",dst_port);
+
+ eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
+
+ if(l2fwd_user_defined_dst_port > 0)
+ {
+ dst_port = l2fwd_user_defined_dst_port;
+ printf("User defined dst Port : %d\n",dst_port);
+ printf("----------------------------------------\n");
+ printf("Forwarding path has been modified from default to user defined\n");
+ }
+ else if(l2fwd_mac_learning_enabled)
+ {
+ //l2fwd_mac_display();
+ //l2fwd_show_mac_entry();
+ //pthread_mutex_lock( &mutex1 );
+ struct node *ptr = NULL;
+ struct mac_list *temp = NULL;
+ ptr = head;
+ if(head == NULL)
+ {
+ printf("No MAC address exist in table , adding entry to the table\n");
+ add_mac_entry(eth,portid);
+ }
+ else
+ {
+ /* condition to check and overwrite the 'port' if the same mac address
+ was already received from another 'port' earlier*/
+ while(ptr != NULL)
+ {
+ if ((memcmp(ð->s_addr, &ptr->s_addr, ETHER_ADDR_LEN) == 0) &&
+ (memcmp(ð->d_addr, &ptr->d_addr, ETHER_ADDR_LEN) == 0))
+ {
+ // printf("----->same SMAC DMAC\n");
+ if(portid != ptr->port)
+ {
+ printf("port id is different %d\n",portid);
+ currenttime = time(NULL);
+ difference = currenttime - (ptr->starttime);
+ if(difference > timeout)
+ {
+ printf("----->difference %d\n",difference);
+ ptr->port = portid;
+ ptr->starttime = time(NULL);
+ l2fwd_mac_ports_update(eth,portid);
+ // add_mac_entry(eth,portid);
+ break;
+ } else {
+ printf("Detected duplication,packet dropped \n");
+ //duplicate packet
+ total_duplicate_packets_dropped++;
+ //need to check whether break is needed
+ // return;
+ }
+ }
+
+ ptr->starttime = time(NULL);
+ update_aging(eth);
+ // printf("---->received from same mac diff %d\n",difference);
+ break;
+ }
+ ptr = ptr->next;
+ }
+ if(ptr == NULL)
+ {
+ /*If the mac entry is not found in the table, then add the entry
+ to the mac table */
+ printf("Adding MAC entry to table\n");
+ add_mac_entry(eth,portid);
+ //l2fwd_mac_ports_update(eth,portid);
+ }
+ }
+
+
+ /* lookup to get the dst port if the mac entry is already present in the table*/
+ temp = start;
+ while(temp != NULL)
+ {
+ if (memcmp(ð->d_addr, &temp->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+ dst_port = temp->port;
+ printf("\n");
+ printf("dst port from table : %d\n",dst_port);
+ break;
+ }
+ temp = temp->next;
+ }
+ /*If the dst mac is not available,then forward the packet in dumping port*/
+ if(temp == NULL)
+ {
+ dst_port = 9;
+ printf("Dumping port : %d\n",dst_port);
+ }
+
+ }
+ else
+ {
+//========================================================
+ /* 02:00:00:00:00:xx */
+ tmp = ð->d_addr.addr_bytes[0];
+ *((uint64_t *)tmp) = 0xffffffffffff ;
+ //*((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
+
+ /* src addr */
+ ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], ð->s_addr);
+ }
+
+ printf("========================================\n");
+ l2fwd_mac_display();
+ l2fwd_show_mac_entry();
+ //pthread_mutex_unlock( &mutex1 );
+ l2fwd_send_packet(m, (uint8_t) dst_port);
+}
+
+/* main processing loop */
+static void
+l2fwd_main_loop(void)
+{
+ struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
+ struct rte_mbuf *m;
+ unsigned lcore_id;
+ uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
+ unsigned i, j, portid, nb_rx;
+ struct lcore_queue_conf *qconf;
+ const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
+ struct ether_hdr *eth_hdr;
+ uint16_t eth_type;
+ struct ipv4_hdr *ip_h;
+ int l2_len;
+ struct arp_hdr *arp_h;
+ uint32_t sip_addr,tip_addr;
+
+ prev_tsc = 0;
+ timer_tsc = 0;
+
+ lcore_id = rte_lcore_id();
+ qconf = &lcore_queue_conf[lcore_id];
+
+ if (qconf->n_rx_port == 0) {
+ RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
+ return;
+ }
+
+ RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
+
+ for (i = 0; i < qconf->n_rx_port; i++) {
+
+ portid = qconf->rx_port_list[i];
+ RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
+ portid);
+ }
+
+ while (1) {
+
+ cur_tsc = rte_rdtsc();
+
+ /*
+ * TX burst queue drain
+ */
+ diff_tsc = cur_tsc - prev_tsc;
+ if (unlikely(diff_tsc > drain_tsc)) {
+
+ for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
+ if (qconf->tx_mbufs[portid].len == 0)
+ continue;
+ l2fwd_send_burst(&lcore_queue_conf[lcore_id],
+ qconf->tx_mbufs[portid].len,
+ (uint8_t) portid);
+ qconf->tx_mbufs[portid].len = 0;
+ }
+
+ /* if timer is enabled */
+ if (timer_period > 0) {
+
+ /* advance the timer */
+ timer_tsc += diff_tsc;
+
+ /* if timer has reached its timeout */
+ if (unlikely(timer_tsc >= (uint64_t) timer_period)) {
+
+ /* do this only on master core */
+ if (lcore_id == rte_get_master_lcore()) {
+ print_stats();
+ /* reset the timer */
+ timer_tsc = 0;
+ }
+ }
+ }
+
+ prev_tsc = cur_tsc;
+ }
+
+ /*
+ * Read packet from RX queues
+ */
+ for (i = 0; i < qconf->n_rx_port; i++) {
+
+ portid = qconf->rx_port_list[i];
+ nb_rx = rte_eth_rx_burst((uint8_t) portid, 0,
+ pkts_burst, MAX_PKT_BURST);
+
+ if(nb_rx == 0)
+ continue;
+ port_statistics[portid].rx += nb_rx;
+
+ for (j = 0; j < nb_rx; j++) {
+ m = pkts_burst[j];
+ rte_prefetch0(rte_pktmbuf_mtod(m, void *));
+
+ eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
+ eth_type = RTE_BE_TO_CPU_16(eth_hdr->ether_type);
+ l2_len = sizeof(struct ether_hdr);
+
+ //if (eth_type != ETHER_TYPE_IPv4) {
+ // rte_pktmbuf_free(m);
+ // continue;
+ //}
+
+ printf("========================================\n");
+ printf("Packet received on port :%d\n",portid);
+ printf("------------ L2 Details------------\n");
+ print_ether_addr(" Source MAC : ", ð_hdr->s_addr);
+ print_ether_addr("\n Destination MAC : ", ð_hdr->d_addr);
+ printf("\n Port : %d"
+ "\n Ethernet Type : 0x%04x"
+ "\n Length : %u "
+ "\n Nb_segs : %d",
+ portid,
+ eth_type,
+ (unsigned) m->pkt_len,
+ (int)m->nb_segs);
+ printf("\n");
+
+ if (eth_type == ETHER_TYPE_ARP)
+ {
+ arp_h = (struct arp_hdr *) ((char *)eth_hdr + l2_len);
+ sip_addr = arp_h->arp_data.arp_sip;
+ tip_addr = arp_h->arp_data.arp_tip;
+ } else
+ {
+ if (eth_type != ETHER_TYPE_IPv4) {
+ rte_pktmbuf_free(m);
+ continue;
+ }
+ ip_h = (struct ipv4_hdr *) ((char *)eth_hdr + l2_len);
+ sip_addr = ip_h->src_addr;
+ tip_addr = ip_h->dst_addr;
+ }
+ printf("------------ L3 Details------------\n");
+ ipv4_addr_dump(" Source IP : ", sip_addr);
+ ipv4_addr_dump("\n Destination IP : ", tip_addr);
+ printf("\n");
+
+ l2fwd_simple_forward(m, portid);
+ }
+ }
+ }
+}
+
+static int
+l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
+{
+ l2fwd_main_loop();
+ return 0;
+}
+
+/* display usage */
+static void
+l2fwd_usage(const char *prgname)
+{
+ printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
+ " -p PORTMASK: hexadecimal bitmask of ports to configure\n"
+ " -q NQ: number of queue (=ports) per lcore (default is 1)\n"
+ " -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
+ " -d DST PORT: user input to select the destination port\n"
+ " -l MAC LEARNING: enable l2fwd mac learning 1-enable : 0 - disable(default) \n",
+ prgname);
+}
+
+static int
+l2fwd_parse_portmask(const char *portmask)
+{
+ char *end = NULL;
+ unsigned long pm;
+
+ /* parse hexadecimal string */
+ pm = strtoul(portmask, &end, 16);
+ if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return -1;
+
+ if (pm == 0)
+ return -1;
+
+ return pm;
+}
+
+static unsigned int
+l2fwd_parse_nqueue(const char *q_arg)
+{
+ char *end = NULL;
+ unsigned long n;
+
+ /* parse hexadecimal string */
+ n = strtoul(q_arg, &end, 10);
+ if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return 0;
+ if (n == 0)
+ return 0;
+ if (n >= MAX_RX_QUEUE_PER_LCORE)
+ return 0;
+
+ return n;
+}
+
+static int
+l2fwd_parse_timer_period(const char *q_arg)
+{
+ char *end = NULL;
+ int n;
+
+ /* parse number string */
+ n = strtol(q_arg, &end, 10);
+ if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return -1;
+ if (n >= MAX_TIMER_PERIOD)
+ return -1;
+
+ return n;
+}
+
+static int
+pktcap_parse_dst_port(const char *q_arg)
+{
+ char *end = NULL;
+ int n;
+
+ /* parse number string */
+ n = strtol(q_arg, &end, 10);
+ if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return -1;
+ if (n > RTE_MAX_ETHPORTS)
+ return -1;
+
+ return n;
+}
+
+static int
+l2fwd_parse_mac_learning(const char *q_arg)
+{
+ char *end = NULL;
+ int n;
+
+ /* parse number string */
+ n = strtol(q_arg, &end, 0);
+ if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return -1;
+ if (n > 1)
+ return -1;
+
+ return n;
+}
+/* Parse the argument given in the command line of the application */
+static int
+l2fwd_parse_args(int argc, char **argv)
+{
+ int opt, ret;
+ char **argvopt;
+ int option_index;
+ char *prgname = argv[0];
+ static struct option lgopts[] = {
+ {NULL, 0, 0, 0}
+ };
+
+ argvopt = argv;
+
+ while ((opt = getopt_long(argc, argvopt, "p:q:T:d:l:",
+ lgopts, &option_index)) != EOF) {
+
+ switch (opt) {
+ /* portmask */
+ case 'p':
+ l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
+ if (l2fwd_enabled_port_mask == 0) {
+ printf("invalid portmask\n");
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ break;
+
+ /* nqueue */
+ case 'q':
+ l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
+ if (l2fwd_rx_queue_per_lcore == 0) {
+ printf("invalid queue number\n");
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ break;
+
+ /* timer period */
+ case 'T':
+ timer_period = l2fwd_parse_timer_period(optarg) * 1000 * TIMER_MILLISECOND;
+ if (timer_period < 0) {
+ printf("invalid timer period\n");
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ break;
+
+ /* user defined dst port*/
+ case 'd':
+ l2fwd_user_defined_dst_port = pktcap_parse_dst_port(optarg);
+ if (l2fwd_user_defined_dst_port < 0) {
+ printf("invalid port number\n");
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ break;
+
+ /* l2 mac learning*/
+ case 'l':
+ l2fwd_mac_learning_enabled = l2fwd_parse_mac_learning(optarg);
+ if (l2fwd_mac_learning_enabled < 0) {
+ printf("invalid option\n");
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ break;
+ /* long options */
+ case 0:
+ l2fwd_usage(prgname);
+ return -1;
+
+ default:
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ }
+
+ if (optind >= 0)
+ argv[optind-1] = prgname;
+
+ ret = optind-1;
+ optind = 0; /* reset getopt lib */
+ return ret;
+}
+
+/* Check the link status of all ports in up to 9s, and print them finally */
+static void
+check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
+{
+#define CHECK_INTERVAL 100 /* 100ms */
+#define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
+ uint8_t portid, count, all_ports_up, print_flag = 0;
+ struct rte_eth_link link;
+
+ printf("\nChecking link status");
+ fflush(stdout);
+ for (count = 0; count <= MAX_CHECK_TIME; count++) {
+ all_ports_up = 1;
+ for (portid = 0; portid < port_num; portid++) {
+ if ((port_mask & (1 << portid)) == 0)
+ continue;
+ memset(&link, 0, sizeof(link));
+ rte_eth_link_get_nowait(portid, &link);
+ /* print link status if flag set */
+ if (print_flag == 1) {
+ if (link.link_status)
+ printf("Port %d Link Up - speed %u "
+ "Mbps - %s\n", (uint8_t)portid,
+ (unsigned)link.link_speed,
+ (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
+ ("full-duplex") : ("half-duplex\n"));
+ else
+ printf("Port %d Link Down\n",
+ (uint8_t)portid);
+ continue;
+ }
+ /* clear all_ports_up flag if any link down */
+ if (link.link_status == 0) {
+ all_ports_up = 0;
+ break;
+ }
+ }
+ /* after finally printing all link status, get out */
+ if (print_flag == 1)
+ break;
+
+ if (all_ports_up == 0) {
+ printf(".");
+ fflush(stdout);
+ rte_delay_ms(CHECK_INTERVAL);
+ }
+
+ /* set the print_flag if all ports up or timeout */
+ if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
+ print_flag = 1;
+ printf("done\n");
+ }
+ }
+}
+
+void *thread2(void)
+{
+ if(start!=NULL)
+ {
+
+ pthread_mutex_lock( &mutex1 );
+ struct mac_list *temp=start;
+ while(temp!=NULL)
+ {
+ if(temp->aging_time>0)
+ temp->aging_time=default_aging_time-(time(NULL)-temp->rx_time);
+ //strcpy(temp->buff,"check");
+ temp=temp->next;
+ }
+ pthread_mutex_unlock( &mutex1 );
+ }
+ pthread_exit(NULL);
+ return NULL;
+}
+
+void update_node(struct mac_list *l_temp)
+{
+ struct node *temp,*temp2,*prev;
+ if(head!=NULL)
+ {
+ while(head!=NULL)
+ {
+ if(memcmp(&l_temp->s_addr, &head->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+ temp=head;
+ head=head->next;
+ free(temp);
+ }
+ else
+ break;
+ }
+ // if(head!=NULL)
+ temp=head->next;
+ prev=head;
+ while(temp!=NULL && head!=NULL)
+ {
+ if(memcmp(&l_temp->s_addr, &temp->s_addr, ETHER_ADDR_LEN) == 0)
+ {
+ prev->next=temp->next;
+ temp2=temp;
+ temp=temp->next;
+ free(temp2);
+ }
+ else
+ {
+ temp=temp->next;
+ prev=prev->next;
+ }
+ }
+ }
+
+
+}
+
+
+void *thread1(void)
+{
+ struct mac_list *temp,*temp2,*prev;
+
+ if(start!=NULL)
+ {
+
+ pthread_mutex_lock( &mutex1 );
+ while(start!=NULL)
+ {
+ if( start->aging_time==0)
+ {
+ temp = start;
+ update_node(temp);
+ start=start->next;
+ free(temp);
+
+ }
+ else
+ break;
+ }
+ // if(start!=NULL)
+ temp = start->next;
+ prev=start;
+ while(temp!= NULL && start!=NULL)
+ {
+
+ if(temp->aging_time==0)
+ {
+ update_node(temp);
+ prev->next=temp->next;
+ temp2=temp;
+ temp=temp->next;
+ if(temp2!=NULL)
+ free(temp2);
+ }
+ else
+ {
+ temp = temp->next;
+ prev=prev->next;
+ }
+ }
+ pthread_mutex_unlock( &mutex1 );
+ }
+ pthread_exit(NULL);
+ return NULL;
+}
+void *threadInit(void)
+{
+ pthread_t t1,t2;
+ int err;
+ while(1)
+ {
+ err=pthread_create(&t1, NULL,(void *)thread1,NULL);//for checking the mac table
+ pthread_join(t1,NULL);
+
+
+ err=pthread_create(&t2,NULL,(void *)thread2,NULL);//for updating the mac table
+ pthread_join(t2,NULL);
+
+ if(err!=0)
+ {
+ printf("thread not created\n");
+ exit(0);
+ }
+ }
+ return NULL;
+}
+
+int
+main(int argc, char **argv)
+{
+ struct lcore_queue_conf *qconf;
+ struct rte_eth_dev_info dev_info;
+ int ret,err;
+ uint8_t nb_ports;
+ uint8_t nb_ports_available;
+ uint8_t portid, last_port;
+ unsigned lcore_id, rx_lcore_id;
+ unsigned nb_ports_in_mask = 0;
+ pthread_t t3;
+ /* init EAL */
+ ret = rte_eal_init(argc, argv);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
+ argc -= ret;
+ argv += ret;
+
+ /* parse application arguments (after the EAL ones) */
+ ret = l2fwd_parse_args(argc, argv);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
+
+ /* create the mbuf pool */
+ l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32,
+ 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
+ if (l2fwd_pktmbuf_pool == NULL)
+ rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
+
+ nb_ports = rte_eth_dev_count();
+ if (nb_ports == 0)
+ rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
+
+ if (nb_ports > RTE_MAX_ETHPORTS)
+ nb_ports = RTE_MAX_ETHPORTS;
+
+ /* reset l2fwd_dst_ports */
+ for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
+ l2fwd_dst_ports[portid] = 0;
+ last_port = 0;
+
+ printf("Entered port : %" PRId64 "\n",l2fwd_user_defined_dst_port);
+
+ /*
+ * Each logical core is assigned a dedicated TX queue on each port.
+ */
+ if(l2fwd_user_defined_dst_port == 0)
+ {
+ for (portid = 0; portid < nb_ports; portid++) {
+ /* skip ports that are not enabled */
+ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
+ continue;
+
+ if (nb_ports_in_mask % 2) {
+ l2fwd_dst_ports[portid] = last_port;
+ l2fwd_dst_ports[last_port] = portid;
+ }
+ else
+ last_port = portid;
+
+ nb_ports_in_mask++;
+
+ rte_eth_dev_info_get(portid, &dev_info);
+ }
+ if (nb_ports_in_mask % 2) {
+ printf("Notice: odd number of ports in portmask.\n");
+ l2fwd_dst_ports[last_port] = last_port;
+ }
+
+ }
+ rx_lcore_id = 0;
+ qconf = NULL;
+
+ /* Initialize the port/queue configuration of each logical core */
+ for (portid = 0; portid < nb_ports; portid++) {
+ /* skip ports that are not enabled */
+ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
+ continue;
+
+ /* get the lcore_id for this port */
+ while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
+ lcore_queue_conf[rx_lcore_id].n_rx_port ==
+ l2fwd_rx_queue_per_lcore) {
+ rx_lcore_id++;
+ if (rx_lcore_id >= RTE_MAX_LCORE)
+ rte_exit(EXIT_FAILURE, "Not enough cores\n");
+ }
+
+ if (qconf != &lcore_queue_conf[rx_lcore_id])
+ /* Assigned a new logical core in the loop above. */
+ qconf = &lcore_queue_conf[rx_lcore_id];
+
+ qconf->rx_port_list[qconf->n_rx_port] = portid;
+ qconf->n_rx_port++;
+ printf("Lcore %u: RX port %u\n", rx_lcore_id, (unsigned) portid);
+ }
+
+ nb_ports_available = nb_ports;
+
+ /* Initialise each port */
+ for (portid = 0; portid < nb_ports; portid++) {
+ /* skip ports that are not enabled */
+ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
+ printf("Skipping disabled port %u\n", (unsigned) portid);
+ nb_ports_available--;
+ continue;
+ }
+ /* init port */
+ printf("Initializing port %u... ", (unsigned) portid);
+ fflush(stdout);
+ ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
+ ret, (unsigned) portid);
+
+ rte_eth_macaddr_get(portid,&l2fwd_ports_eth_addr[portid]);
+
+ /* init one RX queue */
+ fflush(stdout);
+ ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
+ rte_eth_dev_socket_id(portid),
+ NULL,
+ l2fwd_pktmbuf_pool);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
+ ret, (unsigned) portid);
+
+ /* init one TX queue on each port */
+ fflush(stdout);
+ ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
+ rte_eth_dev_socket_id(portid),
+ NULL);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
+ ret, (unsigned) portid);
+ /****************************************/
+ err=pthread_create(&t3,NULL,(void *)threadInit,NULL);
+ //thread for checking and updating the mac table
+ if(err!=0)
+ {
+ printf("thread not created\n");
+ exit(0);
+ }
+ /****************************************/
+ /* Start device */
+ ret = rte_eth_dev_start(portid);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
+ ret, (unsigned) portid);
+
+ printf("done: \n");
+
+ rte_eth_promiscuous_enable(portid);
+
+ printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
+ (unsigned) portid,
+ l2fwd_ports_eth_addr[portid].addr_bytes[0],
+ l2fwd_ports_eth_addr[portid].addr_bytes[1],
+ l2fwd_ports_eth_addr[portid].addr_bytes[2],
+ l2fwd_ports_eth_addr[portid].addr_bytes[3],
+ l2fwd_ports_eth_addr[portid].addr_bytes[4],
+ l2fwd_ports_eth_addr[portid].addr_bytes[5]);
+
+ /* initialize port stats */
+ memset(&port_statistics, 0, sizeof(port_statistics));
+ }
+
+ if (!nb_ports_available) {
+ rte_exit(EXIT_FAILURE,
+ "All available ports are disabled. Please set portmask.\n");
+ }
+
+ check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
+
+ /* launch per-lcore init on every lcore */
+ rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
+ RTE_LCORE_FOREACH_SLAVE(lcore_id) {
+ if (rte_eal_wait_lcore(lcore_id) < 0)
+ return -1;
+ }
+ //pthread_join(t1,NULL);
+ //pthread_join(t2,NULL);
+
+ return 0;
+}
--
1.9.1
^ permalink raw reply [flat|nested] 4+ messages in thread
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2016-10-03 6:17 [dpdk-dev] [PATCH] l2fwd:mac learning Rafat Jahan
2016-10-03 6:45 ` Thomas Monjalon
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2016-10-03 5:27 Rafat Jahan
2016-10-03 5:25 Rafat Jahan
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