examples/ip_pipeline/pipeline/pipeline_master_be.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2015 Intel Corporation
   3  */
   4
   5 #include <fcntl.h>
   6 #include <unistd.h>
   7
   8 #include <rte_common.h>
   9 #include <rte_malloc.h>
  10
  11 #include <cmdline_parse.h>
  12 #include <cmdline_parse_string.h>
  13 #include <cmdline_socket.h>
  14 #include <cmdline.h>
  15
  16 #include "app.h"
  17 #include "pipeline_master_be.h"
  18
  19 struct pipeline_master {
  20         struct app_params *app;
  21         struct cmdline *cl;
  22         int post_init_done;
  23         int script_file_done;
  24 } __rte_cache_aligned;
  25
  26 static void*
  27 pipeline_init(__rte_unused struct pipeline_params *params, void *arg)
  28 {
  29         struct app_params *app = (struct app_params *) arg;
  30         struct pipeline_master *p;
  31         uint32_t size;
  32
  33         /* Check input arguments */
  34         if (app == NULL)
  35                 return NULL;
  36
  37         /* Memory allocation */
  38         size = RTE_CACHE_LINE_ROUNDUP(sizeof(struct pipeline_master));
  39         p = rte_zmalloc(NULL, size, RTE_CACHE_LINE_SIZE);
  40         if (p == NULL)
  41                 return NULL;
  42
  43         /* Initialization */
  44         p->app = app;
  45
  46         p->cl = cmdline_stdin_new(app->cmds, "pipeline> ");
  47         if (p->cl == NULL) {
  48                 rte_free(p);
  49                 return NULL;
  50         }
  51
  52         p->post_init_done = 0;
  53         p->script_file_done = 0;
  54         if (app->script_file == NULL)
  55                 p->script_file_done = 1;
  56
  57         return (void *) p;
  58 }
  59
  60 static int
  61 pipeline_free(void *pipeline)
  62 {
  63         struct pipeline_master *p = (struct pipeline_master *) pipeline;
  64
  65         if (p == NULL)
  66                 return -EINVAL;
  67
  68         cmdline_stdin_exit(p->cl);
  69         rte_free(p);
  70
  71         return 0;
  72 }
  73
  74 static int
  75 pipeline_run(void *pipeline)
  76 {
  77         struct pipeline_master *p = (struct pipeline_master *) pipeline;
  78         struct app_params *app = p->app;
  79         int status;
  80 #ifdef RTE_LIBRTE_KNI
  81         uint32_t i;
  82 #endif /* RTE_LIBRTE_KNI */
  83
  84         /* Application post-init phase */
  85         if (p->post_init_done == 0) {
  86                 app_post_init(app);
  87
  88                 p->post_init_done = 1;
  89         }
  90
  91         /* Run startup script file */
  92         if (p->script_file_done == 0) {
  93                 struct app_params *app = p->app;
  94                 int fd = open(app->script_file, O_RDONLY);
  95
  96                 if (fd < 0)
  97                         printf("Cannot open CLI script file \"%s\"\n",
  98                                 app->script_file);
  99                 else {
 100                         struct cmdline *file_cl;
 101
 102                         printf("Running CLI script file \"%s\" ...\n",
 103                                 app->script_file);
 104                         file_cl = cmdline_new(p->cl->ctx, "", fd, 1);
 105                         cmdline_interact(file_cl);
 106                         close(fd);
 107                 }
 108
 109                 p->script_file_done = 1;
 110         }
 111
 112         /* Command Line Interface (CLI) */
 113         status = cmdline_poll(p->cl);
 114         if (status < 0)
 115                 rte_panic("CLI poll error (%" PRId32 ")\n", status);
 116         else if (status == RDLINE_EXITED) {
 117                 cmdline_stdin_exit(p->cl);
 118                 rte_exit(0, "Bye!\n");
 119         }
 120
 121 #ifdef RTE_LIBRTE_KNI
 122         /* Handle KNI requests from Linux kernel */
 123         for (i = 0; i < app->n_pktq_kni; i++)
 124                 rte_kni_handle_request(app->kni[i]);
 125 #endif /* RTE_LIBRTE_KNI */
 126
 127         return 0;
 128 }
 129
 130 static int
 131 pipeline_timer(__rte_unused void *pipeline)
 132 {
 133         return 0;
 134 }
 135
 136 struct pipeline_be_ops pipeline_master_be_ops = {
 137                 .f_init = pipeline_init,
 138                 .f_free = pipeline_free,
 139                 .f_run = pipeline_run,
 140                 .f_timer = pipeline_timer,
 141 };