DPDK  22.11.0
examples/cmdline/commands.c
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation.
* Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
* All rights reserved.
*/
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <cmdline_rdline.h>
#include <cmdline_parse.h>
#include <cmdline_parse_ipaddr.h>
#include <cmdline_parse_num.h>
#include <cmdline_parse_string.h>
#include <cmdline.h>
#include <rte_string_fns.h>
#include "parse_obj_list.h"
struct object_list global_obj_list;
/* not defined under linux */
#ifndef NIPQUAD
#define NIPQUAD_FMT "%u.%u.%u.%u"
#define NIPQUAD(addr) \
(unsigned)((unsigned char *)&addr)[0], \
(unsigned)((unsigned char *)&addr)[1], \
(unsigned)((unsigned char *)&addr)[2], \
(unsigned)((unsigned char *)&addr)[3]
#endif
#ifndef NIP6
#define NIP6_FMT "%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x"
#define NIP6(addr) \
(unsigned)((addr).s6_addr[0]), \
(unsigned)((addr).s6_addr[1]), \
(unsigned)((addr).s6_addr[2]), \
(unsigned)((addr).s6_addr[3]), \
(unsigned)((addr).s6_addr[4]), \
(unsigned)((addr).s6_addr[5]), \
(unsigned)((addr).s6_addr[6]), \
(unsigned)((addr).s6_addr[7]), \
(unsigned)((addr).s6_addr[8]), \
(unsigned)((addr).s6_addr[9]), \
(unsigned)((addr).s6_addr[10]), \
(unsigned)((addr).s6_addr[11]), \
(unsigned)((addr).s6_addr[12]), \
(unsigned)((addr).s6_addr[13]), \
(unsigned)((addr).s6_addr[14]), \
(unsigned)((addr).s6_addr[15])
#endif
/**********************************************************/
/* Show or delete tokens. 8< */
struct cmd_obj_del_show_result {
cmdline_fixed_string_t action;
struct object *obj;
};
static void cmd_obj_del_show_parsed(void *parsed_result,
struct cmdline *cl,
__rte_unused void *data)
{
struct cmd_obj_del_show_result *res = parsed_result;
char ip_str[INET6_ADDRSTRLEN];
if (res->obj->ip.family == AF_INET)
snprintf(ip_str, sizeof(ip_str), NIPQUAD_FMT,
NIPQUAD(res->obj->ip.addr.ipv4));
else
snprintf(ip_str, sizeof(ip_str), NIP6_FMT,
NIP6(res->obj->ip.addr.ipv6));
if (strcmp(res->action, "del") == 0) {
SLIST_REMOVE(&global_obj_list, res->obj, object, next);
cmdline_printf(cl, "Object %s removed, ip=%s\n",
res->obj->name, ip_str);
free(res->obj);
}
else if (strcmp(res->action, "show") == 0) {
cmdline_printf(cl, "Object %s, ip=%s\n",
res->obj->name, ip_str);
}
}
cmdline_parse_token_string_t cmd_obj_action =
TOKEN_STRING_INITIALIZER(struct cmd_obj_del_show_result,
action, "show#del");
parse_token_obj_list_t cmd_obj_obj =
TOKEN_OBJ_LIST_INITIALIZER(struct cmd_obj_del_show_result, obj,
&global_obj_list);
cmdline_parse_inst_t cmd_obj_del_show = {
.f = cmd_obj_del_show_parsed, /* function to call */
.data = NULL, /* 2nd arg of func */
.help_str = "Show/del an object",
.tokens = { /* token list, NULL terminated */
(void *)&cmd_obj_action,
(void *)&cmd_obj_obj,
NULL,
},
};
/* >8 End of show or delete tokens. */
/**********************************************************/
struct cmd_obj_add_result {
cmdline_fixed_string_t action;
cmdline_fixed_string_t name;
cmdline_ipaddr_t ip;
};
static void cmd_obj_add_parsed(void *parsed_result,
struct cmdline *cl,
__rte_unused void *data)
{
struct cmd_obj_add_result *res = parsed_result;
struct object *o;
char ip_str[INET6_ADDRSTRLEN];
SLIST_FOREACH(o, &global_obj_list, next) {
if (!strcmp(res->name, o->name)) {
cmdline_printf(cl, "Object %s already exist\n", res->name);
return;
}
break;
}
o = malloc(sizeof(*o));
if (!o) {
cmdline_printf(cl, "mem error\n");
return;
}
strlcpy(o->name, res->name, sizeof(o->name));
o->ip = res->ip;
SLIST_INSERT_HEAD(&global_obj_list, o, next);
if (o->ip.family == AF_INET)
snprintf(ip_str, sizeof(ip_str), NIPQUAD_FMT,
NIPQUAD(o->ip.addr.ipv4));
else
snprintf(ip_str, sizeof(ip_str), NIP6_FMT,
NIP6(o->ip.addr.ipv6));
cmdline_printf(cl, "Object %s added, ip=%s\n",
o->name, ip_str);
}
cmdline_parse_token_string_t cmd_obj_action_add =
TOKEN_STRING_INITIALIZER(struct cmd_obj_add_result, action, "add");
cmdline_parse_token_string_t cmd_obj_name =
TOKEN_STRING_INITIALIZER(struct cmd_obj_add_result, name, NULL);
cmdline_parse_token_ipaddr_t cmd_obj_ip =
TOKEN_IPADDR_INITIALIZER(struct cmd_obj_add_result, ip);
cmdline_parse_inst_t cmd_obj_add = {
.f = cmd_obj_add_parsed, /* function to call */
.data = NULL, /* 2nd arg of func */
.help_str = "Add an object (name, val)",
.tokens = { /* token list, NULL terminated */
(void *)&cmd_obj_action_add,
(void *)&cmd_obj_name,
(void *)&cmd_obj_ip,
NULL,
},
};
/**********************************************************/
struct cmd_help_result {
cmdline_fixed_string_t help;
};
static void cmd_help_parsed(__rte_unused void *parsed_result,
struct cmdline *cl,
__rte_unused void *data)
{
cmdline_printf(cl,
"Demo example of command line interface in RTE\n\n"
"This is a readline-like interface that can be used to\n"
"debug your RTE application. It supports some features\n"
"of GNU readline like completion, cut/paste, and some\n"
"other special bindings.\n\n"
"This demo shows how rte_cmdline library can be\n"
"extended to handle a list of objects. There are\n"
"3 commands:\n"
"- add obj_name IP\n"
"- del obj_name\n"
"- show obj_name\n\n");
}
cmdline_parse_token_string_t cmd_help_help =
TOKEN_STRING_INITIALIZER(struct cmd_help_result, help, "help");
cmdline_parse_inst_t cmd_help = {
.f = cmd_help_parsed, /* function to call */
.data = NULL, /* 2nd arg of func */
.help_str = "show help",
.tokens = { /* token list, NULL terminated */
(void *)&cmd_help_help,
NULL,
},
};
/**********************************************************/
/**********************************************************/
/****** CONTEXT (list of instruction) */
/* Cmdline context list of commands in NULL-terminated table. 8< */
cmdline_parse_ctx_t main_ctx[] = {
(cmdline_parse_inst_t *)&cmd_obj_del_show,
(cmdline_parse_inst_t *)&cmd_obj_add,
(cmdline_parse_inst_t *)&cmd_help,
NULL,
};
/* >8 End of context list. */