ceph/src/dpdk/examples/ip_pipeline/pipeline/pipeline_master_be.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <fcntl.h>
  35 #include <unistd.h>
  36
  37 #include <rte_common.h>
  38 #include <rte_malloc.h>
  39
  40 #include <cmdline_parse.h>
  41 #include <cmdline_parse_string.h>
  42 #include <cmdline_socket.h>
  43 #include <cmdline.h>
  44
  45 #include "app.h"
  46 #include "pipeline_master_be.h"
  47
  48 struct pipeline_master {
  49         struct app_params *app;
  50         struct cmdline *cl;
  51         int post_init_done;
  52         int script_file_done;
  53 } __rte_cache_aligned;
  54
  55 static void*
  56 pipeline_init(__rte_unused struct pipeline_params *params, void *arg)
  57 {
  58         struct app_params *app = (struct app_params *) arg;
  59         struct pipeline_master *p;
  60         uint32_t size;
  61
  62         /* Check input arguments */
  63         if (app == NULL)
  64                 return NULL;
  65
  66         /* Memory allocation */
  67         size = RTE_CACHE_LINE_ROUNDUP(sizeof(struct pipeline_master));
  68         p = rte_zmalloc(NULL, size, RTE_CACHE_LINE_SIZE);
  69         if (p == NULL)
  70                 return NULL;
  71
  72         /* Initialization */
  73         p->app = app;
  74
  75         p->cl = cmdline_stdin_new(app->cmds, "pipeline> ");
  76         if (p->cl == NULL) {
  77                 rte_free(p);
  78                 return NULL;
  79         }
  80
  81         p->post_init_done = 0;
  82         p->script_file_done = 0;
  83         if (app->script_file == NULL)
  84                 p->script_file_done = 1;
  85
  86         return (void *) p;
  87 }
  88
  89 static int
  90 pipeline_free(void *pipeline)
  91 {
  92         struct pipeline_master *p = (struct pipeline_master *) pipeline;
  93
  94         if (p == NULL)
  95                 return -EINVAL;
  96
  97         cmdline_stdin_exit(p->cl);
  98         rte_free(p);
  99
 100         return 0;
 101 }
 102
 103 static int
 104 pipeline_run(void *pipeline)
 105 {
 106         struct pipeline_master *p = (struct pipeline_master *) pipeline;
 107         struct app_params *app = p->app;
 108         int status;
 109 #ifdef RTE_LIBRTE_KNI
 110         uint32_t i;
 111 #endif /* RTE_LIBRTE_KNI */
 112
 113         /* Application post-init phase */
 114         if (p->post_init_done == 0) {
 115                 app_post_init(app);
 116
 117                 p->post_init_done = 1;
 118         }
 119
 120         /* Run startup script file */
 121         if (p->script_file_done == 0) {
 122                 struct app_params *app = p->app;
 123                 int fd = open(app->script_file, O_RDONLY);
 124
 125                 if (fd < 0)
 126                         printf("Cannot open CLI script file \"%s\"\n",
 127                                 app->script_file);
 128                 else {
 129                         struct cmdline *file_cl;
 130
 131                         printf("Running CLI script file \"%s\" ...\n",
 132                                 app->script_file);
 133                         file_cl = cmdline_new(p->cl->ctx, "", fd, 1);
 134                         cmdline_interact(file_cl);
 135                         close(fd);
 136                 }
 137
 138                 p->script_file_done = 1;
 139         }
 140
 141         /* Command Line Interface (CLI) */
 142         status = cmdline_poll(p->cl);
 143         if (status < 0)
 144                 rte_panic("CLI poll error (%" PRId32 ")\n", status);
 145         else if (status == RDLINE_EXITED) {
 146                 cmdline_stdin_exit(p->cl);
 147                 rte_exit(0, "Bye!\n");
 148         }
 149
 150 #ifdef RTE_LIBRTE_KNI
 151         /* Handle KNI requests from Linux kernel */
 152         for (i = 0; i < app->n_pktq_kni; i++)
 153                 rte_kni_handle_request(app->kni[i]);
 154 #endif /* RTE_LIBRTE_KNI */
 155
 156         return 0;
 157 }
 158
 159 static int
 160 pipeline_timer(__rte_unused void *pipeline)
 161 {
 162         return 0;
 163 }
 164
 165 struct pipeline_be_ops pipeline_master_be_ops = {
 166                 .f_init = pipeline_init,
 167                 .f_free = pipeline_free,
 168                 .f_run = pipeline_run,
 169                 .f_timer = pipeline_timer,
 170 };