zebra/zebra_fpm_dt.c

   1 /*
   2  * zebra_fpm_dt.c
   3  *
   4  * @copyright Copyright (C) 2016 Sproute Networks, Inc.
   5  *
   6  * @author Avneesh Sachdev <avneesh@sproute.com>
   7  *
   8  * This file is part of GNU Zebra.
   9  *
  10  * GNU Zebra is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License as published by the
  12  * Free Software Foundation; either version 2, or (at your option) any
  13  * later version.
  14  *
  15  * GNU Zebra is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with GNU Zebra; see the file COPYING.  If not, write to the Free
  22  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  23  * 02111-1307, USA.
  24  */
  25
  26 /*
  27  * Developer tests for the zebra code that interfaces with the
  28  * forwarding plane manager.
  29  *
  30  * The functions here are built into developer builds of zebra (when
  31  * DEV_BUILD is defined), and can be called via the 'invoke' cli
  32  * command.
  33  *
  34  * For example:
  35  *
  36  * # invoke zebra function zfpm_dt_benchmark_protobuf_encode 100000
  37  *
  38  */
  39
  40 #include <zebra.h>
  41 #include "log.h"
  42 #include "vrf.h"
  43
  44 #include "zebra/rib.h"
  45
  46 #include "zebra_fpm_private.h"
  47
  48 #include "qpb/qpb_allocator.h"
  49 #include "qpb/linear_allocator.h"
  50
  51 #include "qpb/qpb.h"
  52 #include "fpm/fpm.pb-c.h"
  53
  54 /*
  55  * Externs.
  56  */
  57 extern int zfpm_dt_benchmark_netlink_encode (int argc, const char **argv);
  58 extern int zfpm_dt_benchmark_protobuf_encode (int argc, const char **argv);
  59 extern int zfpm_dt_benchmark_protobuf_decode (int argc, const char **argv);
  60
  61 /*
  62  * zfpm_dt_find_route
  63  *
  64  * Selects a suitable rib destination for fpm interface tests.
  65  */
  66 static int
  67 zfpm_dt_find_route (rib_dest_t **dest_p, struct rib **rib_p)
  68 {
  69   struct route_node *rnode;
  70   route_table_iter_t iter;
  71   struct route_table *table;
  72   rib_dest_t *dest;
  73   struct rib *rib;
  74   int ret;
  75
  76   table = zebra_vrf_table (AFI_IP, SAFI_UNICAST, VRF_DEFAULT);
  77   if (!table)
  78     return 0;
  79
  80   route_table_iter_init(&iter, table);
  81   while ((rnode = route_table_iter_next(&iter)))
  82     {
  83       dest = rib_dest_from_rnode (rnode);
  84
  85       if (!dest)
  86           continue;
  87
  88       rib = zfpm_route_for_update(dest);
  89       if (!rib)
  90         continue;
  91
  92       if (rib->nexthop_active_num <= 0)
  93         continue;
  94
  95       *dest_p = dest;
  96       *rib_p = rib;
  97       ret = 1;
  98       goto done;
  99     }
 100
 101     ret = 0;
 102
 103   done:
 104     route_table_iter_cleanup(&iter);
 105     return ret;
 106 }
 107 #ifdef HAVE_NETLINK
 108
 109 /*
 110  * zfpm_dt_benchmark_netlink_encode
 111  */
 112 int
 113 zfpm_dt_benchmark_netlink_encode (int argc, const char **argv)
 114 {
 115   int times, i, len;
 116   rib_dest_t *dest;
 117   struct rib *rib;
 118   char buf[4096];
 119
 120   times = 100000;
 121   if (argc > 0) {
 122     times = atoi(argv[0]);
 123   }
 124
 125   if (!zfpm_dt_find_route(&dest, &rib)) {
 126     return 1;
 127   }
 128
 129   for (i = 0; i < times; i++) {
 130     len = zfpm_netlink_encode_route(RTM_NEWROUTE, dest, rib, buf, sizeof(buf));
 131     if (len <= 0) {
 132       return 2;
 133     }
 134   }
 135   return 0;
 136 }
 137
 138 #endif /* HAVE_NETLINK */
 139
 140 #ifdef HAVE_PROTOBUF
 141
 142 /*
 143  * zfpm_dt_benchmark_protobuf_encode
 144  */
 145 int
 146 zfpm_dt_benchmark_protobuf_encode (int argc, const char **argv)
 147 {
 148   int times, i, len;
 149   rib_dest_t *dest;
 150   struct rib *rib;
 151   uint8_t buf[4096];
 152
 153   times = 100000;
 154   if (argc > 0) {
 155     times = atoi(argv[0]);
 156   }
 157
 158   if (!zfpm_dt_find_route(&dest, &rib)) {
 159     return 1;
 160   }
 161
 162   for (i = 0; i < times; i++) {
 163     len = zfpm_protobuf_encode_route(dest, rib, buf, sizeof(buf));
 164     if (len <= 0) {
 165       return 2;
 166     }
 167   }
 168   return 0;
 169 }
 170
 171 /*
 172  * zfpm_dt_log_fpm_message
 173  */
 174 static void
 175 zfpm_dt_log_fpm_message (Fpm__Message *msg)
 176 {
 177   Fpm__AddRoute *add_route;
 178   Fpm__Nexthop *nexthop;
 179   struct prefix prefix;
 180   u_char family, nh_family;
 181   uint if_index;
 182   char *if_name;
 183   size_t i;
 184   char buf[INET6_ADDRSTRLEN];
 185   union g_addr nh_addr;
 186
 187   if (msg->type != FPM__MESSAGE__TYPE__ADD_ROUTE)
 188     return;
 189
 190   zfpm_debug ("Add route message");
 191   add_route = msg->add_route;
 192
 193   if (!qpb_address_family_get (add_route->address_family, &family))
 194     return;
 195
 196   if (!qpb_l3_prefix_get (add_route->key->prefix, family, &prefix))
 197     return;
 198
 199   zfpm_debug ("Vrf id: %d, Prefix: %s/%d, Metric: %d", add_route->vrf_id,
 200               inet_ntop (family, &prefix.u.prefix, buf, sizeof (buf)),
 201               prefix.prefixlen, add_route->metric);
 202
 203   /*
 204    * Go over nexthops.
 205    */
 206   for (i = 0; i < add_route->n_nexthops; i++)
 207     {
 208       nexthop = add_route->nexthops[i];
 209       if (!qpb_if_identifier_get (nexthop->if_id, &if_index, &if_name))
 210         continue;
 211
 212       if (nexthop->address)
 213         qpb_l3_address_get (nexthop->address, &nh_family, &nh_addr);
 214
 215       zfpm_debug ("Nexthop - if_index: %d (%s), gateway: %s, ", if_index,
 216                   if_name ? if_name : "name not specified",
 217                   nexthop->address ? inet_ntoa (nh_addr.ipv4) : "None");
 218     }
 219 }
 220
 221 /*
 222  * zfpm_dt_benchmark_protobuf_decode
 223  */
 224 int
 225 zfpm_dt_benchmark_protobuf_decode (int argc, const char **argv)
 226 {
 227   int times, i, len;
 228   rib_dest_t *dest;
 229   struct rib *rib;
 230   uint8_t msg_buf[4096];
 231   QPB_DECLARE_STACK_ALLOCATOR (allocator, 8192);
 232   Fpm__Message *fpm_msg;
 233
 234   QPB_INIT_STACK_ALLOCATOR (allocator);
 235
 236   times = 100000;
 237   if (argc > 0)
 238     times = atoi(argv[0]);
 239
 240   if (!zfpm_dt_find_route (&dest, &rib))
 241     return 1;
 242
 243   /*
 244    * Encode the route into the message buffer once only.
 245    */
 246   len = zfpm_protobuf_encode_route (dest, rib, msg_buf, sizeof (msg_buf));
 247   if (len <= 0)
 248     return 2;
 249
 250   // Decode once, and display the decoded message
 251   fpm_msg = fpm__message__unpack(&allocator, len, msg_buf);
 252
 253   if (fpm_msg)
 254     {
 255       zfpm_dt_log_fpm_message(fpm_msg);
 256       QPB_RESET_STACK_ALLOCATOR (allocator);
 257     }
 258
 259   /*
 260    * Decode encoded message the specified number of times.
 261    */
 262   for (i = 0; i < times; i++)
 263     {
 264       fpm_msg = fpm__message__unpack (&allocator, len, msg_buf);
 265
 266       if (!fpm_msg)
 267         return 3;
 268
 269       // fpm__message__free_unpacked(msg, NULL);
 270       QPB_RESET_STACK_ALLOCATOR (allocator);
 271   }
 272   return 0;
 273 }
 274
 275 #endif /* HAVE_PROTOBUF */