Simple example app creates one packet i/o to external interface and one ipc pktio to other process. Then transfer packet from external interface to other process and back thought ipc queue.
Signed-off-by: Maxim Uvarov <maxim.uva...@linaro.org> --- configure.ac | 1 + example/Makefile.am | 2 +- example/ipc/.gitignore | 1 + example/ipc/Makefile.am | 7 + example/ipc/odp_ipc.c | 427 ++++++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 437 insertions(+), 1 deletion(-) create mode 100644 example/ipc/.gitignore create mode 100644 example/ipc/Makefile.am create mode 100644 example/ipc/odp_ipc.c diff --git a/configure.ac b/configure.ac index d20bad2..1ceb922 100644 --- a/configure.ac +++ b/configure.ac @@ -274,6 +274,7 @@ AC_CONFIG_FILES([Makefile example/Makefile example/classifier/Makefile example/generator/Makefile + example/ipc/Makefile example/ipsec/Makefile example/packet/Makefile example/timer/Makefile diff --git a/example/Makefile.am b/example/Makefile.am index 353f397..506963f 100644 --- a/example/Makefile.am +++ b/example/Makefile.am @@ -1 +1 @@ -SUBDIRS = classifier generator ipsec packet timer +SUBDIRS = classifier generator ipc ipsec packet timer diff --git a/example/ipc/.gitignore b/example/ipc/.gitignore new file mode 100644 index 0000000..963d99d --- /dev/null +++ b/example/ipc/.gitignore @@ -0,0 +1 @@ +odp_ipc diff --git a/example/ipc/Makefile.am b/example/ipc/Makefile.am new file mode 100644 index 0000000..3da9549 --- /dev/null +++ b/example/ipc/Makefile.am @@ -0,0 +1,7 @@ +include $(top_srcdir)/example/Makefile.inc + +bin_PROGRAMS = odp_ipc +odp_ipc_LDFLAGS = $(AM_LDFLAGS) -static +odp_ipc_CFLAGS = $(AM_CFLAGS) -I${top_srcdir}/example + +dist_odp_ipc_SOURCES = odp_ipc.c diff --git a/example/ipc/odp_ipc.c b/example/ipc/odp_ipc.c new file mode 100644 index 0000000..0ed5442 --- /dev/null +++ b/example/ipc/odp_ipc.c @@ -0,0 +1,427 @@ +/* Copyright (c) 2015, Linaro Limited + * All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +/** + * @file + * + * @example odp_ipc.c ODP IPC test application. + */ + +#include <stdlib.h> +#include <string.h> +#include <getopt.h> +#include <unistd.h> + +#include <example_debug.h> + +#include <odp.h> +#include <odp/helper/linux.h> + +/** @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_PKT_BURST + * @brief Maximum number of packet bursts + */ +#define MAX_PKT_BURST 16 + +/** 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)) + +/** Application argument */ +static char *pktio_name; + +/* helper funcs */ +static void parse_args(int argc, char *argv[]); +static void print_info(char *progname); +static void usage(char *progname); + +/** + * Create a pktio handle. + * + * @param dev Name of device to open + * @param pool Pool to associate with device for packet RX/TX + * + * @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_pktio_t ipc_pktio; + + /* Open a packet IO instance */ + pktio = odp_pktio_open(dev, pool); + if (pktio == ODP_PKTIO_INVALID) + EXAMPLE_ABORT("Error: pktio create failed for %s\n", dev); + + printf("pid: %d, create IPC pktio\n", getpid()); + ipc_pktio = odp_pktio_open("ipc_pktio", pool); + if (ipc_pktio == ODP_PKTIO_INVALID) + EXAMPLE_ABORT("Error: ipc pktio create failed.\n"); + + return pktio; +} + +/** + * Packet IO loopback worker thread using bursts from/to IO resources + * + * @param arg thread arguments of type 'thread_args_t *' + */ +static void *pktio_run_loop(odp_pool_t pool) +{ + int thr; + odp_pktio_t pktio; + int pkts; + odp_packet_t pkt_tbl[MAX_PKT_BURST]; + odp_pktio_t ipc_pktio; + thr = odp_thread_id(); + + pktio = odp_pktio_lookup(pktio_name); + if (pktio == ODP_PKTIO_INVALID) { + EXAMPLE_ERR(" [%02i] Error: lookup of pktio %s failed\n", + thr, pktio_name); + return NULL; + } + + printf(" [%02i] looked up pktio:%02" PRIu64 ", burst mode\n", + thr, odp_pktio_to_u64(pktio)); + + ipc_pktio = odp_pktio_lookup("ipc_pktio"); + if (pktio == ODP_PKTIO_INVALID) { + EXAMPLE_ERR(" [%02i] Error: lookup of pktio %s failed\n", + thr, "ipc_pktio"); + return NULL; + } + printf(" [%02i] looked up ipc_pktio:%02" PRIu64 ", burst mode\n", + thr, odp_pktio_to_u64(ipc_pktio)); + + /* packets loop */ + for (;;) { + int i; + time_t tm = time(NULL); + char *tm_str = ctime(&tm); + int sent; + + /* 1. emulate that pkts packets were recieved */ + odp_random_data((uint8_t *)&pkts, sizeof(pkts), 0); + pkts = ((pkts & 0xffff) % MAX_PKT_BURST) + 1; + + for (i = 0; i < pkts; i++) { + odp_packet_t pkt; + + pkt = odp_packet_alloc(pool, SHM_PKT_POOL_BUF_SIZE); + if (pkt == ODP_PACKET_INVALID) { + pkts = i; + printf("unable to alloc packet\n"); + break; + } + pkt_tbl[i] = pkt; + } + + /* 2. Copy timestemp to that packets */ + for (i = 0; i < pkts; i++) { + odp_packet_copydata_in(pkt_tbl[i], + 0, + strlen(tm_str), + tm_str); + odp_packet_copydata_in(pkt_tbl[i], + strlen(tm_str), + 1, + "\0"); + } + /* 3. Send packets to ipc_pktio */ + sent = odp_pktio_send(ipc_pktio, pkt_tbl, pkts); + if (sent < 0) + fprintf(stderr, "error sending to ipc pktio\n"); + else + printf("---main pid %d: ipcsend %d pkts, size %d, data: %s\n", + getpid(), sent, + odp_packet_len(pkt_tbl[0]), + tm_str); + + /* 4. Sleep some time to not overflow debug prints */ + sleep(1); + + /* 5. Recieve packets back from ipc_pktio, print timestemp and + * free that packet + */ + while (1) { + pkts = odp_pktio_recv(ipc_pktio, pkt_tbl, + MAX_PKT_BURST); + if (pkts > 0) { + for (i = 0; i < pkts; i++) { + uint32_t len; + char *b; + + len = odp_packet_len(pkt_tbl[i]); + b = malloc(len); + odp_packet_copydata_out(pkt_tbl[i], 0, + odp_packet_len(pkt_tbl[i]), + b); + printf("---main pid %d: ipcsrecv: size %d, data: %s\n", + getpid(), + odp_packet_len(pkt_tbl[i]), b); + free(b); + odp_packet_free(pkt_tbl[i]); + } + } else { + break; + } + } + } + +/* unreachable */ + return NULL; +} + +static int ipc_second_process(void) +{ + odp_pktio_t pktio; + odp_packet_t pkt_tbl[MAX_PKT_BURST]; + int i; + int pkts; + + /* linux shared memory can already have objects with names which + * second process can try to connect. That might be even interrupted + * current application. Might be later I will add magic numbers to + * each ipc object in linux-generic. HW platfrom shound not have that + * problem. So just wait a little while master process will create + * all ipc objects before connectioning to them. + */ + sleep(3); + + /* Do lookup packet I/O in IPC shared memory, + * and link it to local pool. */ + while (1) { + pktio = odp_pktio_open("ipc_pktio", ODP_POOL_INVALID); + if (pktio == ODP_PKTIO_INVALID) { + sleep(1); + printf("%s() pid %d: looking for ipc_pktio\n", + __func__, getpid()); + continue; + } + break; + } + + for (;;) { + pkts = odp_pktio_recv(pktio, pkt_tbl, MAX_PKT_BURST); + if (pkts > 0) { + for (i = 0; i < pkts; i++) { + char *b = malloc(odp_packet_len(pkt_tbl[i])); + + odp_packet_copydata_out(pkt_tbl[i], 0, + odp_packet_len(pkt_tbl[i]), + b); + + printf("++++%s: pid %d, got packet %p, size %d, data: %s\n", + __func__, getpid(), + (void *)pkt_tbl[i], + odp_packet_len(pkt_tbl[i]), b); + free(b); + + odp_pktio_send(pktio, pkt_tbl, pkts); + } + } else { + /* No need to load cpu in example app.*/ + sleep(1); + } + } + + EXAMPLE_ERR("Unexpected close."); + return 0; +} + +/** + * ODP packet example main function + */ +int main(int argc, char *argv[]) +{ + odp_pool_t pool; + odp_pool_param_t params; + int f; + + /* Parse and store the application arguments */ + parse_args(argc, argv); + + /* Use fork() before odp_init_global() to have 2 isolated + * processes which need communicate to each other with + * shared memory. + */ + f = fork(); + if (f) { + printf("Process one pid: %d\n", getpid()); + /* 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); + } + + ipc_second_process(); + } else { + printf("Process two pid: %d\n", getpid()); + } + + + /* 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); + } + + /* Print both system and application information */ + print_info(NO_PATH(argv[0])); + + /* 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); + + create_pktio(pktio_name, pool); + + pktio_run_loop(pool); + + 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[]) +{ + int opt; + int long_index; + size_t len; + static struct option longopts[] = { + {"interface", required_argument, NULL, 'i'}, /* return 'i' */ + {"help", no_argument, NULL, 'h'}, /* return 'h' */ + {NULL, 0, NULL, 0} + }; + + while (1) { + opt = getopt_long(argc, argv, "i:h", + longopts, &long_index); + + if (opt == -1) + break; /* No more options */ + + switch (opt) { + case 'i': + len = strlen(optarg); + if (len == 0) { + usage(argv[0]); + exit(EXIT_FAILURE); + } + len += 1; /* add room for '\0' */ + + pktio_name = malloc(len); + if (pktio_name == NULL) { + usage(argv[0]); + exit(EXIT_FAILURE); + } + strcpy(pktio_name, optarg); + + break; + case 'h': + usage(argv[0]); + exit(EXIT_SUCCESS); + break; + + default: + break; + } + } + + if (pktio_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) +{ + 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\n", + progname, pktio_name); + printf("\n\n"); + fflush(NULL); +} + +/** + * Prinf usage information + */ +static void usage(char *progname) +{ + printf("\n" + "Usage: %s OPTIONS\n" + " E.g. %s -i eth0\n" + "\n" + "OpenDataPlane example application.\n" + "\n" + "Mandatory OPTIONS:\n" + " -i, --interface Eth interface\n" + "\n" + "Optional OPTIONS\n" + " -h, --help Display help and exit.\n" + " environment variables: ODP_PKTIO_DISABLE_SOCKET_MMAP\n" + " ODP_PKTIO_DISABLE_SOCKET_MMSG\n" + " ODP_PKTIO_DISABLE_SOCKET_BASIC\n" + " can be used to advanced pkt I/O selection for linux-generic\n" + "\n", NO_PATH(progname), NO_PATH(progname) + ); +} -- 1.9.1 _______________________________________________ lng-odp mailing list lng-odp@lists.linaro.org https://lists.linaro.org/mailman/listinfo/lng-odp