lib/cmdline/cmdline_parse_portlist.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation.
   3  * Copyright (c) 2010, Keith Wiles <keith.wiles@windriver.com>
   4  * All rights reserved.
   5  */
   6
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include <string.h>
  10 #include <errno.h>
  11
  12 #include <rte_string_fns.h>
  13 #include "cmdline_parse.h"
  14 #include "cmdline_parse_portlist.h"
  15
  16 struct cmdline_token_ops cmdline_token_portlist_ops = {
  17         .parse = cmdline_parse_portlist,
  18         .complete_get_nb = NULL,
  19         .complete_get_elt = NULL,
  20         .get_help = cmdline_get_help_portlist,
  21 };
  22
  23 static void
  24 parse_set_list(cmdline_portlist_t *pl, size_t low, size_t high)
  25 {
  26         do {
  27                 pl->map |= (1 << low++);
  28         } while (low <= high);
  29 }
  30
  31 static int
  32 parse_ports(cmdline_portlist_t *pl, const char *str)
  33 {
  34         size_t ps, pe;
  35         const char *first, *last;
  36         char *end;
  37
  38         for (first = str, last = first;
  39             first != NULL && last != NULL;
  40             first = last + 1) {
  41
  42                 last = strchr(first, ',');
  43
  44                 errno = 0;
  45                 ps = strtoul(first, &end, 10);
  46                 if (errno != 0 || end == first ||
  47                     (end[0] != '-' && end[0] != 0 && end != last))
  48                         return -1;
  49
  50                 /* Support for N-M portlist format */
  51                 if (end[0] == '-') {
  52                         errno = 0;
  53                         first = end + 1;
  54                         pe = strtoul(first, &end, 10);
  55                         if (errno != 0 || end == first ||
  56                             (end[0] != 0 && end != last))
  57                                 return -1;
  58                 } else {
  59                         pe = ps;
  60                 }
  61
  62                 if (ps > pe || pe >= sizeof (pl->map) * 8)
  63                         return -1;
  64
  65                 parse_set_list(pl, ps, pe);
  66         }
  67
  68         return 0;
  69 }
  70
  71 int
  72 cmdline_parse_portlist(__rte_unused cmdline_parse_token_hdr_t *tk,
  73         const char *buf, void *res, unsigned ressize)
  74 {
  75         unsigned int token_len = 0;
  76         char portlist_str[PORTLIST_TOKEN_SIZE+1];
  77         cmdline_portlist_t *pl;
  78
  79         if (!buf || ! *buf)
  80                 return -1;
  81
  82         if (res && ressize < sizeof(cmdline_portlist_t))
  83                 return -1;
  84
  85         pl = res;
  86
  87         while (!cmdline_isendoftoken(buf[token_len]) &&
  88             (token_len < PORTLIST_TOKEN_SIZE))
  89                 token_len++;
  90
  91         if (token_len >= PORTLIST_TOKEN_SIZE)
  92                 return -1;
  93
  94         strlcpy(portlist_str, buf, token_len + 1);
  95
  96         if (pl) {
  97                 pl->map = 0;
  98                 if (strcmp("all", portlist_str) == 0)
  99                         pl->map = UINT32_MAX;
 100                 else if (parse_ports(pl, portlist_str) != 0)
 101                         return -1;
 102         }
 103
 104         return token_len;
 105 }
 106
 107 int
 108 cmdline_get_help_portlist(__rte_unused cmdline_parse_token_hdr_t *tk,
 109                 char *dstbuf, unsigned int size)
 110 {
 111         int ret;
 112         ret = snprintf(dstbuf, size, "range of ports as 3,4-6,8-19,20");
 113         if (ret < 0)
 114                 return -1;
 115         return 0;
 116 }