On 23 April 2015 at 06:37, <bala.manoha...@linaro.org> wrote:
> From: Balasubramanian Manoharan <bala.manoha...@linaro.org>
>
> 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
> * Prints statistics interms of the number of packets dispatched to each
> queue
>
> Signed-off-by: Balasubramanian Manoharan <bala.manoha...@linaro.org>
>
Reviewed-and-tested-by: Mike Holmes <mike.hol...@linaro.org>
> ---
> v4: Incorporates review comments from Mike and Ola
> configure.ac | 1 +
> example/Makefile.am | 2 +-
> example/classifier/.gitignore | 1 +
> example/classifier/Makefile.am | 10 +
> example/classifier/odp_classifier.c | 835
> ++++++++++++++++++++++++++++++++++++
> 5 files changed, 848 insertions(+), 1 deletion(-)
> create mode 100644 example/classifier/.gitignore
> 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/.gitignore b/example/classifier/.gitignore
> new file mode 100644
> index 0000000..a356d48
> --- /dev/null
> +++ b/example/classifier/.gitignore
> @@ -0,0 +1 @@
> +odp_classifier
> 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..cf53565
> --- /dev/null
> +++ b/example/classifier/odp_classifier.c
> @@ -0,0 +1,835 @@
> +/* 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 <errno.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) {
> + if (odp_errno() == EPERM)
> + EXAMPLE_ERR("Root level permission required\n");
> +
> + EXAMPLE_ERR("pktio create failed for %s\n", dev);
> + exit(EXIT_FAILURE);
> + }
> +
> + 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_ERR("pktio inq create failed for %s\n", dev);
> + exit(EXIT_FAILURE);
> + }
> +
> + ret = odp_pktio_inq_setdef(pktio, inq_def);
> + if (ret != 0) {
> + EXAMPLE_ERR("default input-Q setup for %s\n", dev);
> + exit(EXIT_FAILURE);
> + }
> +
> + 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_ERR("ODP thread local init failed.\n");
> + exit(EXIT_FAILURE);
> + }
> +
> + /* 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_ERR("Invalid ODP_PMR_TERM string\n");
> + exit(EXIT_FAILURE);
> + }
> + 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]);
> + exit(EXIT_FAILURE);
> + }
> +
> + /* 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)
> + );
> +}
> --
> 2.0.1.472.g6f92e5f
>
> _______________________________________________
> lng-odp mailing list
> lng-odp@lists.linaro.org
> https://lists.linaro.org/mailman/listinfo/lng-odp
>
--
Mike Holmes
Technical Manager - Linaro Networking Group
Linaro.org <http://www.linaro.org/> *│ *Open source software for ARM SoCs
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