On 21 April 2015 at 13:27, Maxim Uvarov <[email protected]> wrote:
> Bala, one more comment. Please do parsing arguments before odp init.
>
>
> About this code Mike found that it will be abort if you do not run it
> under root due to
> unable do raw socket operations.
>
What error code do you get from Linux? EPERM?
>
>
> pktio = odp_pktio_open(dev, pool);
> if (pktio == ODP_PKTIO_INVALID)
> EXAMPLE_ABORT("pktio create failed for %s\n", dev);
>
Here could be a check for odp_errno() == EPERM (or which is the actual
error code return in this situation).
odp_pktio_open() must store the Linux errno in the ODP errno variable.
> I tried "loop" application starts well. But needed some traffic so that
> loop is no good fit.
> I think it's better to exit from this app with some return code and add
> small note to
> Usage that for linux-generic user has to be root to open real devices in
> raw mode.
>
> Thanks,
> Maxim.
>
> On 04/16/15 14:41, [email protected] wrote:
>
>> From: Balasubramanian Manoharan <[email protected]>
>>
>> ODP Classifier example
>>
>> This programs gets pmr rules as command-line parameter and configures the
>> classification engine
>> in the system.
>>
>> This initial version supports the following
>> * ODP_PMR_SIP_ADDR pmr term
>> * PMR term MATCH and RANGE type
>> * Multiple PMR rule can be set on a single pktio interface with different
>> queues associated to each PMR rule
>> * Automatically configures a default queue and provides statistics for
>> the same
>>
>> Signed-off-by: Balasubramanian Manoharan <[email protected]>
>> ---
>> V3: Incorporates review comments from Mike and Maxim
>> Adds a timeout variable to configure the time in seconds for classifier
>> example to run.
>>
>> configure.ac | 1 +
>> example/Makefile.am | 2 +-
>> example/classifier/Makefile.am | 10 +
>> example/classifier/odp_classifier.c | 820
>> ++++++++++++++++++++++++++++++++++++
>> 4 files changed, 832 insertions(+), 1 deletion(-)
>> create mode 100644 example/classifier/Makefile.am
>> create mode 100644 example/classifier/odp_classifier.c
>>
>> diff --git a/configure.ac b/configure.ac
>> index 78ff245..d20bad2 100644
>> --- a/configure.ac
>> +++ b/configure.ac
>> @@ -272,6 +272,7 @@ AM_CXXFLAGS="-std=c++11"
>> AC_CONFIG_FILES([Makefile
>> doc/Makefile
>> example/Makefile
>> + example/classifier/Makefile
>> example/generator/Makefile
>> example/ipsec/Makefile
>> example/packet/Makefile
>> diff --git a/example/Makefile.am b/example/Makefile.am
>> index 6bb4f5c..353f397 100644
>> --- a/example/Makefile.am
>> +++ b/example/Makefile.am
>> @@ -1 +1 @@
>> -SUBDIRS = generator ipsec packet timer
>> +SUBDIRS = classifier generator ipsec packet timer
>> diff --git a/example/classifier/Makefile.am
>> b/example/classifier/Makefile.am
>> new file mode 100644
>> index 0000000..938f094
>> --- /dev/null
>> +++ b/example/classifier/Makefile.am
>> @@ -0,0 +1,10 @@
>> +include $(top_srcdir)/example/Makefile.inc
>> +
>> +bin_PROGRAMS = odp_classifier
>> +odp_classifier_LDFLAGS = $(AM_LDFLAGS) -static
>> +odp_classifier_CFLAGS = $(AM_CFLAGS) -I${top_srcdir}/example
>> +
>> +noinst_HEADERS = \
>> + $(top_srcdir)/example/example_debug.h
>> +
>> +dist_odp_classifier_SOURCES = odp_classifier.c
>> diff --git a/example/classifier/odp_classifier.c
>> b/example/classifier/odp_classifier.c
>> new file mode 100644
>> index 0000000..85b6e00
>> --- /dev/null
>> +++ b/example/classifier/odp_classifier.c
>> @@ -0,0 +1,820 @@
>> +/* Copyright (c) 2015, Linaro Limited
>> + * All rights reserved.
>> + *
>> + * SPDX-License-Identifier: BSD-3-Clause
>> + */
>> +
>> +#include <stdlib.h>
>> +#include <string.h>
>> +#include <getopt.h>
>> +#include <unistd.h>
>> +#include <example_debug.h>
>> +
>> +#include <odp.h>
>> +#include <odp/helper/linux.h>
>> +#include <odp/helper/eth.h>
>> +#include <odp/helper/ip.h>
>> +#include <strings.h>
>> +#include <stdio.h>
>> +
>> +/** @def MAX_WORKERS
>> + * @brief Maximum number of worker threads
>> + */
>> +#define MAX_WORKERS 32
>> +
>> +/** @def SHM_PKT_POOL_SIZE
>> + * @brief Size of the shared memory block
>> + */
>> +#define SHM_PKT_POOL_SIZE (512*2048)
>> +
>> +/** @def SHM_PKT_POOL_BUF_SIZE
>> + * @brief Buffer size of the packet pool buffer
>> + */
>> +#define SHM_PKT_POOL_BUF_SIZE 1856
>> +
>> +/** @def MAX_PMR_COUNT
>> + * @brief Maximum number of Classification Policy
>> + */
>> +#define MAX_PMR_COUNT 8
>> +
>> +/** @def DISPLAY_STRING_LEN
>> + * @brief Length of string used to display term value
>> + */
>> +#define DISPLAY_STRING_LEN 32
>> +
>> +/** Get rid of path in filename - only for unix-type paths using '/' */
>> +#define NO_PATH(file_name) (strrchr((file_name), '/') ? \
>> + strrchr((file_name), '/') + 1 : (file_name))
>> +
>> +typedef struct {
>> + odp_queue_t queue; /**< Associated queue handle */
>> + odp_cos_t cos; /**< Associated cos handle */
>> + odp_pmr_t pmr; /**< Associated pmr handle */
>> + odp_atomic_u64_t packet_count; /**< count of received packets */
>> + odp_pmr_term_e term; /**< odp pmr term value */
>> + char queue_name[ODP_QUEUE_NAME_LEN]; /**< queue name */
>> + odp_pmr_match_type_e match_type; /**< pmr match type */
>> + int val_sz; /**< size of the pmr term */
>> + union {
>> + struct {
>> + uint32_t val; /**< pmr term value */
>> + uint32_t mask; /**< pmr term mask */
>> + } match;
>> + struct {
>> + uint32_t val1; /**< pmr term start range */
>> + uint32_t val2; /**< pmr term end range */
>> + } range;
>> + };
>> + char value1[DISPLAY_STRING_LEN]; /**< Display string1 */
>> + char value2[DISPLAY_STRING_LEN]; /**< Display string2 */
>> +} global_statistics;
>> +
>> +typedef struct {
>> + global_statistics stats[MAX_PMR_COUNT];
>> + int policy_count; /**< global policy count */
>> + int appl_mode; /**< application mode */
>> + odp_atomic_u64_t total_packets; /**< total received packets */
>> + int cpu_count; /**< Number of CPUs to use */
>> + uint32_t time; /**< Number of seconds to run */
>> + char *if_name; /**< pointer to interface names */
>> +} appl_args_t;
>> +
>> +enum packet_mode {
>> + APPL_MODE_DROP, /**< Packet is dropped */
>> + APPL_MODE_REPLY /**< Packet is sent back */
>> +};
>> +
>> +/* helper funcs */
>> +static int drop_err_pkts(odp_packet_t pkt_tbl[], unsigned len);
>> +static void swap_pkt_addrs(odp_packet_t pkt_tbl[], unsigned len);
>> +static void parse_args(int argc, char *argv[], appl_args_t *appl_args);
>> +static void print_info(char *progname, appl_args_t *appl_args);
>> +static void usage(char *progname);
>> +static void configure_cos_queue(odp_pktio_t pktio, appl_args_t *args);
>> +static void configure_default_queue(odp_pktio_t pktio, appl_args_t
>> *args);
>> +static int convert_str_to_pmr_enum(char *token, odp_pmr_term_e *term);
>> +static int parse_pmr_policy(appl_args_t *appl_args, char *argv[], char
>> *optarg);
>> +
>> +static inline
>> +void print_cls_statistics(appl_args_t *args)
>> +{
>> + int i;
>> + uint32_t timeout;
>> + int infinite = 0;
>> +
>> + printf("\n");
>> + for (i = 0; i < 40; i++)
>> + printf("-");
>> + printf("\n");
>> + /* print statistics */
>> + printf("CLASSIFIER EXAMPLE STATISTICS\n");
>> + for (i = 0; i < 40; i++)
>> + printf("-");
>> + printf("\n");
>> + printf("CONFIGURATION\n");
>> + printf("\n");
>> + printf("QUEUE\tMATCH\tVALUE1\t\tVALUE2\n");
>> + for (i = 0; i < 40; i++)
>> + printf("-");
>> + printf("\n");
>> + for (i = 0; i < args->policy_count - 1; i++) {
>> + printf("%s\t", args->stats[i].queue_name);
>> + if (args->stats[i].match_type == ODP_PMR_MASK)
>> + printf("MATCH\t");
>> + else
>> + printf("RANGE\t");
>> + printf("%s\t", args->stats[i].value1);
>> + printf("%s\n", args->stats[i].value2);
>> + }
>> + printf("\n");
>> + printf("RECEIVED PACKETS\n");
>> + for (i = 0; i < 40; i++)
>> + printf("-");
>> + printf("\n");
>> + for (i = 0; i < args->policy_count; i++)
>> + printf("%s\t", args->stats[i].queue_name);
>> + printf("Total Packets");
>> + printf("\n");
>> +
>> + timeout = args->time;
>> +
>> + /* Incase if default value is given for timeout
>> + run the loop infinitely */
>> + if (timeout == 0)
>> + infinite = 1;
>> +
>> + for (; timeout > 0 || infinite; timeout--) {
>> + for (i = 0; i < args->policy_count; i++)
>> + printf("%"PRIu64"\t",
>> + odp_atomic_load_u64(&args->stats[i]
>> + .packet_count));
>> +
>> + printf("\t%"PRIu64"\t", odp_atomic_load_u64(&args->
>> +
>> total_packets));
>> +
>> + sleep(1);
>> + printf("\r");
>> + fflush(stdout);
>> + }
>> +}
>> +
>> +static inline
>> +int parse_ipv4_addr(const char *ipaddress, uint32_t *addr)
>> +{
>> + int b[4];
>> + int converted;
>> +
>> + converted = sscanf(ipaddress, "%d.%d.%d.%d",
>> + &b[3], &b[2], &b[1], &b[0]);
>> + if (4 != converted)
>> + return -1;
>> +
>> + if ((b[0] > 255) || (b[1] > 255) || (b[2] > 255) || (b[3] > 255))
>> + return -1;
>> +
>> + *addr = b[0] | b[1] << 8 | b[2] << 16 | b[3] << 24;
>> +
>> + return 0;
>> +}
>> +
>> +static inline
>> +int parse_ipv4_mask(const char *str, uint32_t *mask)
>> +{
>> + uint32_t b;
>> + sscanf(str, "%x", &b);
>> + *mask = b;
>> + return 0;
>> +}
>> +
>> +/**
>> + * Create a pktio handle, optionally associating a default input queue.
>> + *
>> + * @param dev Device name
>> + * @param pool Associated Packet Pool
>> + *
>> + * @return The handle of the created pktio object.
>> + * @retval ODP_PKTIO_INVALID if the create fails.
>> + */
>> +static odp_pktio_t create_pktio(const char *dev, odp_pool_t pool)
>> +{
>> + odp_pktio_t pktio;
>> + odp_queue_t inq_def;
>> + odp_queue_param_t qparam;
>> + char inq_name[ODP_QUEUE_NAME_LEN];
>> + int ret;
>> +
>> + /* Open a packet IO instance */
>> + pktio = odp_pktio_open(dev, pool);
>> + if (pktio == ODP_PKTIO_INVALID)
>> + EXAMPLE_ABORT("pktio create failed for %s\n", dev);
>> +
>> + qparam.sched.prio = ODP_SCHED_PRIO_DEFAULT;
>> + qparam.sched.sync = ODP_SCHED_SYNC_ATOMIC;
>> + qparam.sched.group = ODP_SCHED_GROUP_DEFAULT;
>> + snprintf(inq_name, sizeof(inq_name), "%" PRIu64 "-pktio_inq_def",
>> + odp_pktio_to_u64(pktio));
>> + inq_name[ODP_QUEUE_NAME_LEN - 1] = '\0';
>> +
>> + inq_def = odp_queue_create(inq_name, ODP_QUEUE_TYPE_PKTIN,
>> &qparam);
>> + if (inq_def == ODP_QUEUE_INVALID)
>> + EXAMPLE_ABORT("pktio inq create failed for %s\n", dev);
>> +
>> + ret = odp_pktio_inq_setdef(pktio, inq_def);
>> + if (ret != 0)
>> + EXAMPLE_ABORT("default input-Q setup for %s\n", dev);
>> +
>> + printf(" created pktio:%02" PRIu64
>> + ", dev:%s, queue mode (ATOMIC queues)\n"
>> + " \tdefault pktio%02" PRIu64
>> + "-INPUT queue:%" PRIu64 "\n",
>> + odp_pktio_to_u64(pktio), dev,
>> + odp_pktio_to_u64(pktio),
>> odp_queue_to_u64(inq_def));
>> +
>> + return pktio;
>> +}
>> +
>> +/**
>> + * Worker threads to receive the packet
>> + *
>> + */
>> +static void *pktio_receive_thread(void *arg)
>> +{
>> + int thr;
>> + odp_queue_t outq_def;
>> + odp_packet_t pkt;
>> + odp_event_t ev;
>> + unsigned long err_cnt = 0;
>> + odp_queue_t queue;
>> + int i;
>> + thr = odp_thread_id();
>> + appl_args_t *appl = (appl_args_t *)arg;
>> + global_statistics *stats;
>> +
>> +
>> + /* Init this thread */
>> + if (odp_init_local())
>> + EXAMPLE_ABORT("ODP thread local init failed.\n");
>> +
>> + /* Loop packets */
>> + for (;;) {
>> + odp_pktio_t pktio_tmp;
>> +
>> + /* Use schedule to get buf from any input queue */
>> + ev = odp_schedule(&queue, ODP_SCHED_WAIT);
>> +
>> + /* Loop back to receive packets incase of invalid event */
>> + if (odp_unlikely(ev == ODP_EVENT_INVALID))
>> + continue;
>> +
>> + pkt = odp_packet_from_event(ev);
>> +
>> + /* Total packets received */
>> + odp_atomic_inc_u64(&appl->total_packets);
>> +
>> + /* Drop packets with errors */
>> + if (odp_unlikely(drop_err_pkts(&pkt, 1) == 0)) {
>> + EXAMPLE_ERR("Drop frame - err_cnt:%lu\n",
>> ++err_cnt);
>> + continue;
>> + }
>> +
>> + pktio_tmp = odp_packet_input(pkt);
>> + outq_def = odp_pktio_outq_getdef(pktio_tmp);
>> +
>> + if (outq_def == ODP_QUEUE_INVALID) {
>> + EXAMPLE_ERR(" [%02i] Error: def output-Q
>> query\n",
>> + thr);
>> + return NULL;
>> + }
>> +
>> + /* Swap Eth MACs and possibly IP-addrs before sending
>> back */
>> + swap_pkt_addrs(&pkt, 1);
>> +
>> + for (i = 0; i < MAX_PMR_COUNT; i++) {
>> + stats = &appl->stats[i];
>> + if (queue == stats->queue)
>> + odp_atomic_inc_u64(&stats->packet_count);
>> + }
>> +
>> + if (appl->appl_mode == APPL_MODE_DROP)
>> + odp_packet_free(pkt);
>> + else
>> + odp_queue_enq(outq_def, ev);
>> + }
>> +
>> + return NULL;
>> +}
>> +
>> +static void configure_default_queue(odp_pktio_t pktio, appl_args_t *args)
>> +{
>> + odp_queue_param_t qparam;
>> + odp_cos_t cos_default;
>> + char cos_name[ODP_COS_NAME_LEN];
>> + char queue_name[ODP_QUEUE_NAME_LEN];
>> + odp_queue_t queue_default;
>> + global_statistics *stats = args->stats;
>> + sprintf(cos_name, "Default%s", args->if_name);
>> + cos_default = odp_cos_create(cos_name);
>> +
>> + qparam.sched.prio = ODP_SCHED_PRIO_DEFAULT;
>> + qparam.sched.sync = ODP_SCHED_SYNC_NONE;
>> + qparam.sched.group = ODP_SCHED_GROUP_ALL;
>> + sprintf(queue_name, "%s", "DefaultQueue");
>> + queue_default = odp_queue_create(queue_name,
>> + ODP_QUEUE_TYPE_SCHED, &qparam);
>> +
>> + odp_cos_set_queue(cos_default, queue_default);
>> + odp_pktio_default_cos_set(pktio, cos_default);
>> + stats[args->policy_count].cos = cos_default;
>> + /* add default queue to global stats */
>> + stats[args->policy_count].queue = queue_default;
>> + strcpy(stats[args->policy_count].queue_name, "DefaultQueue");
>> + odp_atomic_init_u64(&stats[args->policy_count].packet_count, 0);
>> + args->policy_count++;
>> +}
>> +
>> +static void configure_cos_queue(odp_pktio_t pktio, appl_args_t *args)
>> +{
>> + char cos_name[ODP_COS_NAME_LEN];
>> + char queue_name[ODP_QUEUE_NAME_LEN];
>> + int i;
>> + global_statistics *stats;
>> + odp_queue_param_t qparam;
>> +
>> + for (i = 0; i < args->policy_count; i++) {
>> + stats = &args->stats[i];
>> + sprintf(cos_name, "CoS%s", stats->queue_name);
>> + stats->cos = odp_cos_create(cos_name);
>> +
>> + if (stats->match_type == ODP_PMR_MASK) {
>> + stats->pmr = odp_pmr_create_match(stats->term,
>> + &stats->match.val,
>> + &stats->match.mask,
>> + stats->val_sz);
>> + } else {
>> + stats->pmr = odp_pmr_create_range(stats->term,
>> + &stats->range.val1,
>> + &stats->range.val2,
>> + stats->val_sz);
>> + }
>> + qparam.sched.prio = i % odp_schedule_num_prio();
>> + qparam.sched.sync = ODP_SCHED_SYNC_NONE;
>> + qparam.sched.group = ODP_SCHED_GROUP_ALL;
>> +
>> + sprintf(queue_name, "%s%d", args->stats[i].queue_name, i);
>> + stats->queue = odp_queue_create(queue_name,
>> + ODP_QUEUE_TYPE_SCHED,
>> + &qparam);
>> + odp_cos_set_queue(stats->cos, stats->queue);
>> + odp_pktio_pmr_cos(stats->pmr, pktio, stats->cos);
>> +
>> + odp_atomic_init_u64(&stats->packet_count, 0);
>> + }
>> +}
>> +
>> +/**
>> + * ODP Classifier example main function
>> + */
>> +int main(int argc, char *argv[])
>> +{
>> + odph_linux_pthread_t thread_tbl[MAX_WORKERS];
>> + odp_pool_t pool;
>> + int num_workers;
>> + int i;
>> + int cpu;
>> + odp_cpumask_t cpumask;
>> + char cpumaskstr[ODP_CPUMASK_STR_SIZE];
>> + odp_pool_param_t params;
>> + odp_pktio_t pktio;
>> + appl_args_t *args;
>> + odp_shm_t shm;
>> +
>> + /* Init ODP before calling anything else */
>> + if (odp_init_global(NULL, NULL)) {
>> + EXAMPLE_ERR("Error: ODP global init failed.\n");
>> + exit(EXIT_FAILURE);
>> + }
>> +
>> + /* Init this thread */
>> + if (odp_init_local()) {
>> + EXAMPLE_ERR("Error: ODP local init failed.\n");
>> + exit(EXIT_FAILURE);
>> + }
>> +
>> + /* Reserve memory for args from shared mem */
>> + shm = odp_shm_reserve("cls_shm_args", sizeof(appl_args_t),
>> + ODP_CACHE_LINE_SIZE, 0);
>> +
>> + if (shm == ODP_SHM_INVALID) {
>> + EXAMPLE_ERR("Error: shared mem reserve failed.\n");
>> + exit(EXIT_FAILURE);
>> + }
>> +
>> + args = odp_shm_addr(shm);
>> +
>> + if (args == NULL) {
>> + EXAMPLE_ERR("Error: shared mem alloc failed.\n");
>> + exit(EXIT_FAILURE);
>> + }
>> +
>> + memset(args, 0, sizeof(*args));
>> + /* Parse and store the application arguments */
>> + parse_args(argc, argv, args);
>> +
>> + /* Print both system and application information */
>> + print_info(NO_PATH(argv[0]), args);
>> +
>> + /* Default to system CPU count unless user specified */
>> + num_workers = MAX_WORKERS;
>> + if (args->cpu_count)
>> + num_workers = args->cpu_count;
>> +
>> + /*
>> + * By default CPU #0 runs Linux kernel background tasks.
>> + * Start mapping thread from CPU #1
>> + */
>> + num_workers = odph_linux_cpumask_default(&cpumask, num_workers);
>> + (void)odp_cpumask_to_str(&cpumask, cpumaskstr,
>> sizeof(cpumaskstr));
>> +
>> + printf("num worker threads: %i\n", num_workers);
>> + printf("first CPU: %i\n", odp_cpumask_first(&cpumask));
>> + printf("cpu mask: %s\n", cpumaskstr);
>> +
>> + /* Create packet pool */
>> + memset(¶ms, 0, sizeof(params));
>> + params.pkt.seg_len = SHM_PKT_POOL_BUF_SIZE;
>> + params.pkt.len = SHM_PKT_POOL_BUF_SIZE;
>> + params.pkt.num = SHM_PKT_POOL_SIZE/SHM_PKT_POOL_BUF_SIZE;
>> + params.type = ODP_POOL_PACKET;
>> +
>> + pool = odp_pool_create("packet_pool", ODP_SHM_NULL, ¶ms);
>> +
>> + if (pool == ODP_POOL_INVALID) {
>> + EXAMPLE_ERR("Error: packet pool create failed.\n");
>> + exit(EXIT_FAILURE);
>> + }
>> + /* odp_pool_print(pool); */
>> + odp_atomic_init_u64(&args->total_packets, 0);
>> +
>> + /* create pktio per interface */
>> + pktio = create_pktio(args->if_name, pool);
>> +
>> + configure_cos_queue(pktio, args);
>> +
>> + /* configure default Cos and default queue */
>> + configure_default_queue(pktio, args);
>> +
>> + /* Create and init worker threads */
>> + memset(thread_tbl, 0, sizeof(thread_tbl));
>> +
>> + cpu = odp_cpumask_first(&cpumask);
>> + for (i = 0; i < num_workers; ++i) {
>> + odp_cpumask_t thd_mask;
>> + /*
>> + * Calls odp_thread_create(cpu) for each thread
>> + */
>> + odp_cpumask_zero(&thd_mask);
>> + odp_cpumask_set(&thd_mask, cpu);
>> + odph_linux_pthread_create(&thread_tbl[i], &thd_mask,
>> + pktio_receive_thread,
>> + args);
>> + cpu = odp_cpumask_next(&cpumask, cpu);
>> + }
>> +
>> + print_cls_statistics(args);
>> +
>> + for (i = 0; i < args->policy_count; i++) {
>> + odp_cos_destroy(args->stats[i].cos);
>> + odp_queue_destroy(args->stats[i].queue);
>> + }
>> +
>> + free(args->if_name);
>> + odp_shm_free(shm);
>> + printf("Exit\n\n");
>> +
>> + return 0;
>> +}
>> +
>> +/**
>> + * Drop packets which input parsing marked as containing errors.
>> + *
>> + * Frees packets with error and modifies pkt_tbl[] to only contain
>> packets with
>> + * no detected errors.
>> + *
>> + * @param pkt_tbl Array of packet
>> + * @param len Length of pkt_tbl[]
>> + *
>> + * @return Number of packets with no detected error
>> + */
>> +static int drop_err_pkts(odp_packet_t pkt_tbl[], unsigned len)
>> +{
>> + odp_packet_t pkt;
>> + unsigned pkt_cnt = len;
>> + unsigned i, j;
>> +
>> + for (i = 0, j = 0; i < len; ++i) {
>> + pkt = pkt_tbl[i];
>> +
>> + if (odp_unlikely(odp_packet_has_error(pkt))) {
>> + odp_packet_free(pkt); /* Drop */
>> + pkt_cnt--;
>> + } else if (odp_unlikely(i != j++)) {
>> + pkt_tbl[j-1] = pkt;
>> + }
>> + }
>> +
>> + return pkt_cnt;
>> +}
>> +
>> +/**
>> + * Swap eth src<->dst and IP src<->dst addresses
>> + *
>> + * @param pkt_tbl Array of packets
>> + * @param len Length of pkt_tbl[]
>> + */
>> +static void swap_pkt_addrs(odp_packet_t pkt_tbl[], unsigned len)
>> +{
>> + odp_packet_t pkt;
>> + odph_ethhdr_t *eth;
>> + odph_ethaddr_t tmp_addr;
>> + odph_ipv4hdr_t *ip;
>> + uint32be_t ip_tmp_addr; /* tmp ip addr */
>> + unsigned i;
>> +
>> + for (i = 0; i < len; ++i) {
>> + pkt = pkt_tbl[i];
>> + if (odp_packet_has_eth(pkt)) {
>> + eth = (odph_ethhdr_t *)odp_packet_l2_ptr(pkt,
>> NULL);
>> +
>> + tmp_addr = eth->dst;
>> + eth->dst = eth->src;
>> + eth->src = tmp_addr;
>> +
>> + if (odp_packet_has_ipv4(pkt)) {
>> + /* IPv4 */
>> + ip = (odph_ipv4hdr_t *)
>> + odp_packet_l3_ptr(pkt, NULL);
>> +
>> + ip_tmp_addr = ip->src_addr;
>> + ip->src_addr = ip->dst_addr;
>> + ip->dst_addr = ip_tmp_addr;
>> + }
>> + }
>> + }
>> +}
>> +
>> +static int convert_str_to_pmr_enum(char *token, odp_pmr_term_e *term)
>> +{
>> + if (0 == strcasecmp(token, "ODP_PMR_SIP_ADDR")) {
>> + *term = ODP_PMR_SIP_ADDR;
>> + return 0;
>> + }
>> + return -1;
>> +}
>> +
>> +
>> +static int parse_pmr_policy(appl_args_t *appl_args, char *argv[], char
>> *optarg)
>> +{
>> + int policy_count;
>> + char *token;
>> + size_t len;
>> + odp_pmr_term_e term;
>> + global_statistics *stats;
>> + char *pmr_str;
>> +
>> + policy_count = appl_args->policy_count;
>> + stats = appl_args->stats;
>> +
>> + /* last array index is needed for default queue */
>> + if (policy_count >= MAX_PMR_COUNT - 1) {
>> + EXAMPLE_ERR("Maximum allowed PMR reached\n");
>> + return -1;
>> + }
>> +
>> + len = strlen(optarg);
>> + len++;
>> + pmr_str = malloc(len);
>> + strcpy(pmr_str, optarg);
>> +
>> + /* PMR TERM */
>> + token = strtok(pmr_str, ":");
>> + if (convert_str_to_pmr_enum(token, &term))
>> + EXAMPLE_ABORT("Invalid ODP_PMR_TERM string");
>> + stats[policy_count].term = term;
>> + /* PMR RANGE vs MATCH */
>> + token = strtok(NULL, ":");
>> + if (0 == strcasecmp(token, "range")) {
>> + stats[policy_count].match_type = ODP_PMR_RANGE;
>> + } else if (0 == strcasecmp(token, "match")) {
>> + stats[policy_count].match_type = ODP_PMR_MASK;
>> + } else {
>> + usage(argv[0]);
>> + exit(EXIT_FAILURE);
>> + }
>> +
>> + /* PMR value */
>> + switch (term) {
>> + case ODP_PMR_SIP_ADDR:
>> + if (stats[policy_count].match_type == ODP_PMR_MASK) {
>> + token = strtok(NULL, ":");
>> + strcpy(stats[policy_count].value1, token);
>> + parse_ipv4_addr(token,
>> &stats[policy_count].match.val);
>> + token = strtok(NULL, ":");
>> + strcpy(stats[policy_count].value2, token);
>> + parse_ipv4_mask(token,
>> &stats[policy_count].match.mask);
>> + stats[policy_count].val_sz = 4;
>> + } else {
>> + token = strtok(NULL, ":");
>> + strcpy(stats[policy_count].value1,
>> + token);
>> + parse_ipv4_addr(token,
>> &stats[policy_count].range.val1);
>> + token = strtok(NULL, ":");
>> + strcpy(stats[policy_count].value2, token);
>> + parse_ipv4_addr(token,
>> &stats[policy_count].range.val2);
>> + stats[policy_count].val_sz = 4;
>> + }
>> + break;
>> + default:
>> + usage(argv[0]);
>> + EXAMPLE_ABORT("PMR term not supported");
>> + }
>> +
>> + /* Queue Name */
>> + token = strtok(NULL, ":");
>> + strcpy(stats[policy_count].queue_name, token);
>> + appl_args->policy_count++;
>> + free(pmr_str);
>> + return 0;
>> +}
>> +
>> +/**
>> + * Parse and store the command line arguments
>> + *
>> + * @param argc argument count
>> + * @param argv[] argument vector
>> + * @param appl_args Store application arguments here
>> + */
>> +static void parse_args(int argc, char *argv[], appl_args_t *appl_args)
>> +{
>> + int opt;
>> + int long_index;
>> + size_t len;
>> + int i;
>> + int interface = 0;
>> + int policy = 0;
>> +
>> + static struct option longopts[] = {
>> + {"count", required_argument, NULL, 'c'},
>> + {"interface", required_argument, NULL, 'i'}, /* return
>> 'i' */
>> + {"policy", required_argument, NULL, 'p'}, /* return
>> 'p' */
>> + {"mode", required_argument, NULL, 'm'}, /* return
>> 'm' */
>> + {"time", required_argument, NULL, 't'}, /* return
>> 't' */
>> + {"help", no_argument, NULL, 'h'}, /* return
>> 'h' */
>> + {NULL, 0, NULL, 0}
>> + };
>> +
>> +
>> + while (1) {
>> + opt = getopt_long(argc, argv, "+c:t:i:p:m:t:h",
>> + longopts, &long_index);
>> +
>> + if (opt == -1)
>> + break; /* No more options */
>> +
>> + switch (opt) {
>> + case 'c':
>> + appl_args->cpu_count = atoi(optarg);
>> + break;
>> + case 'p':
>> + if (0 > parse_pmr_policy(appl_args, argv, optarg))
>> + continue;
>> + policy = 1;
>> + break;
>> + case 't':
>> + appl_args->time = atoi(optarg);
>> + break;
>> + case 'i':
>> + len = strlen(optarg);
>> + if (len == 0) {
>> + usage(argv[0]);
>> + exit(EXIT_FAILURE);
>> + }
>> + len += 1; /* add room for '\0' */
>> +
>> + appl_args->if_name = malloc(len);
>> + if (appl_args->if_name == NULL) {
>> + usage(argv[0]);
>> + exit(EXIT_FAILURE);
>> + }
>> +
>> + strcpy(appl_args->if_name, optarg);
>> + interface = 1;
>> + break;
>> +
>> + case 'h':
>> + usage(argv[0]);
>> + exit(EXIT_SUCCESS);
>> + break;
>> + case 'm':
>> + i = atoi(optarg);
>> + if (i == 0)
>> + appl_args->appl_mode = APPL_MODE_DROP;
>> + else
>> + appl_args->appl_mode = APPL_MODE_REPLY;
>> + break;
>> +
>> + default:
>> + break;
>> + }
>> + }
>> +
>> + if (!interface || !policy) {
>> + usage(argv[0]);
>> + exit(EXIT_FAILURE);
>> + }
>> + if (appl_args->if_name == NULL) {
>> + usage(argv[0]);
>> + exit(EXIT_FAILURE);
>> + }
>> +
>> + optind = 1; /* reset 'extern optind' from the getopt
>> lib */
>> +}
>> +
>> +/**
>> + * Print system and application info
>> + */
>> +static void print_info(char *progname, appl_args_t *appl_args)
>> +{
>> + printf("\n"
>> + "ODP system info\n"
>> + "---------------\n"
>> + "ODP API version: %s\n"
>> + "CPU model: %s\n"
>> + "CPU freq (hz): %"PRIu64"\n"
>> + "Cache line size: %i\n"
>> + "CPU count: %i\n"
>> + "\n",
>> + odp_version_api_str(), odp_sys_cpu_model_str(),
>> + odp_sys_cpu_hz(), odp_sys_cache_line_size(),
>> + odp_cpu_count());
>> +
>> + printf("Running ODP appl: \"%s\"\n"
>> + "-----------------\n"
>> + "Using IF:%s ",
>> + progname, appl_args->if_name);
>> + printf("\n\n");
>> + fflush(NULL);
>> +}
>> +
>> +/**
>> + * Prinf usage information
>> + */
>> +static void usage(char *progname)
>> +{
>> + printf("\n"
>> + "OpenDataPlane Classifier example.\n"
>> + "Usage: %s OPTIONS\n"
>> + " E.g. %s -i eth1 -m 0 -p
>> \"ODP_PMR_SIP_ADDR:match:10.10.10.5:FFFFFFFF:queue1\" \\\n"
>> + "\t\t\t-p
>> \"ODP_PMR_SIP_ADDR:MATCH:10.10.10.6:FFFFFFFF:queue2\"
>> \\\n"
>> + "\t\t\t-p
>> \"ODP_PMR_SIP_ADDR:MATCH:10.10.10.7:000000FF:queue3\" \\\n"
>> + "\t\t\t-p \"ODP_PMR_SIP_ADDR:RANGE:10.10.10.10:10
>> .10.10.20:queue3\"\n"
>> + "\n"
>> + "For the above example configuration the
>> following will be the packet distribution\n"
>> + "queue1\t\tPackets with source ip address
>> 10.10.10.5\n"
>> + "queue2\t\tPackets with source ip address whose
>> last 8 bits match 7\n"
>> + "queue3\t\tPackets with source ip address in the
>> range 10.10.10.10 to 10.10.10.20\n"
>> + "\n"
>> + "Mandatory OPTIONS:\n"
>> + " -i, --interface Eth interface\n"
>> + " -p, --policy <odp_pmr_term_e>:<match
>> type>:<value1>:<value2>:<queue name>\n"
>> + "\n"
>> + "<odp_pmr_term_e> Packet Matching Rule
>> defined with odp_pmr_term_e "
>> + "for the policy\n"
>> + "\n"
>> + "<match type> PMR Match type.\n"
>> + " MATCH: PMR rule type
>> MATCH\n"
>> + " RANGE: PMR rule type
>> RANCE\n"
>> + "\n"
>> + "<value1> PMR value1.\n"
>> + " If match type is MATCH is
>> the the matching value.\n"
>> + " If match type is RANGE it
>> is start range.\n"
>> + "\n"
>> + "<value2> PMR value2.\n"
>> + " If match type is
>> \"MATCH\" it is the MASK value\n"
>> + " If match type is
>> \"RANCE\" it is end range.\n"
>> + "\n"
>> + "Optional OPTIONS\n"
>> + " -c, --count <number> CPU count.\n"
>> + " default: CPU core
>> count.\n"
>> + "\n"
>> + " -m, --mode 0: Packet Drop mode.
>> Received packets will be dropped\n"
>> + " !0: Packet ICMP mode.
>> Received packets will be sent back\n"
>> + " default: Packet Drop
>> mode\n"
>> + "\n"
>> + " -t, --timeout !0: Time for which the
>> classifier will be run in seconds\n"
>> + " 0: Runs in infinite
>> loop\n"
>> + " default: Runs in infinite
>> loop\n"
>> + "\n"
>> + " -h, --help Display help and exit.\n"
>> + "\n", NO_PATH(progname), NO_PATH(progname)
>> + );
>> +}
>>
>
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