summaryrefslogtreecommitdiffstats
path: root/test/test_bond.py
AgeCommit message (Expand)AuthorFilesLines
2018-05-25bond: performance harvestingSteven1-11/+3
2018-03-21bond: Add bonding driver and LACP protocolSteven1-0/+282
n58' href='#n58'>58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 
/*
 * Copyright (c) 2016 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * @file
 * @brief Common utility functions for IPv4, IPv6 and L2 LISP-GPE tunnels.
 *
 */
#include <vnet/lisp-gpe/lisp_gpe.h>
#include <vnet/lisp-gpe/lisp_gpe_tunnel.h>
#include <vnet/lisp-gpe/lisp_gpe_adjacency.h>

#include <vnet/fib/fib_table.h>

/**
 * @brief Pool of all LISP tunnels
 */
static lisp_gpe_tunnel_t *lisp_gpe_tunnel_pool;

/**
 * @brief a DB of all tunnels
 */
static uword *lisp_gpe_tunnel_db;

/**
 * @brief Compute IP-UDP-GPE sub-tunnel encap/rewrite header.
 *
 * @param[in]   t       Parent of the sub-tunnel.
 * @param[in]   st      Sub-tunnel.
 * @param[in]   lp      Local and remote locators used in the encap header.
 *
 * @return 0 on success.
 */
u8 *
lisp_gpe_tunnel_build_rewrite (const lisp_gpe_tunnel_t * lgt,
			       const lisp_gpe_adjacency_t * ladj,
			       lisp_gpe_next_protocol_e payload_proto)
{
  lisp_gpe_header_t *lisp0;
  u8 *rw = 0;
  int len;
  gpe_encap_mode_t encap_mode = vnet_gpe_get_encap_mode ();

  if (IP4 == ip_addr_version (&lgt->key->lcl))
    {
      ip4_udp_lisp_gpe_header_t *h0;
      ip4_header_t *ip0;

      len = sizeof (*h0);

      vec_validate_aligned (rw, len - 1, CLIB_CACHE_LINE_BYTES);

      h0 = (ip4_udp_lisp_gpe_header_t *) rw;

      /* Fixed portion of the (outer) ip4 header */
      ip0 = &h0->ip4;
      ip0->ip_version_and_header_length = 0x45;
      ip0->ttl = 254;
      ip0->protocol = IP_PROTOCOL_UDP;

      /* we fix up the ip4 header length and checksum after-the-fact */
      ip_address_copy_addr (&ip0->src_address, &lgt->key->lcl);
      ip_address_copy_addr (&ip0->dst_address, &lgt->key->rmt);
      ip0->checksum = ip4_header_checksum (ip0);

      /* UDP header, randomize src port on something, maybe? */
      h0->udp.src_port = clib_host_to_net_u16 (4341);
      h0->udp.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_lisp_gpe);

      /* LISP-gpe header */
      lisp0 = &h0->lisp;
    }
  else
    {
      ip6_udp_lisp_gpe_header_t *h0;
      ip6_header_t *ip0;

      len = sizeof (*h0);

      vec_validate_aligned (rw, len - 1, CLIB_CACHE_LINE_BYTES);

      h0 = (ip6_udp_lisp_gpe_header_t *) rw;

      /* Fixed portion of the (outer) ip6 header */
      ip0 = &h0->ip6;
      ip0->ip_version_traffic_class_and_flow_label =
	clib_host_to_net_u32 (0x6 << 28);
      ip0->hop_limit = 254;
      ip0->protocol = IP_PROTOCOL_UDP;

      /* we fix up the ip6 header length after-the-fact */
      ip_address_copy_addr (&ip0->src_address, &lgt->key->lcl);
      ip_address_copy_addr (&ip0->dst_address, &lgt->key->rmt);

      /* UDP header, randomize src port on something, maybe? */
      h0->udp.src_port = clib_host_to_net_u16 (4341);
      h0->udp.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_lisp_gpe);

      /* LISP-gpe header */
      lisp0 = &h0->lisp;
    }

  lisp0->flags = ladj->flags;
  if (GPE_ENCAP_VXLAN == encap_mode)
    /* unset P flag */
    lisp0->flags &= ~LISP_GPE_FLAGS_P;

  lisp0->ver_res = 0;
  lisp0->res = 0;
  lisp0->next_protocol = payload_proto;
  lisp0->iid = clib_host_to_net_u32 (ladj->vni) >> 8;	/* first 24 bits only */

  return (rw);
}

static lisp_gpe_tunnel_t *
lisp_gpe_tunnel_db_find (const lisp_gpe_tunnel_key_t * key)
{
  uword *p;

  p = hash_get_mem (lisp_gpe_tunnel_db, (void *) key);

  if (NULL != p)
    {
      return (pool_elt_at_index (lisp_gpe_tunnel_pool, p[0]));
    }
  return (NULL);
}

lisp_gpe_tunnel_t *
lisp_gpe_tunnel_get_i (index_t lgti)
{
  return (pool_elt_at_index (lisp_gpe_tunnel_pool, lgti));
}

index_t
lisp_gpe_tunnel_find_or_create_and_lock (const locator_pair_t * pair,
					 u32 rloc_fib_index)
{
  lisp_gpe_tunnel_key_t key = {
    .lcl = pair->lcl_loc,
    .rmt = pair->rmt_loc,
    .fib_index = rloc_fib_index,
  };
  lisp_gpe_tunnel_t *lgt;
  fib_prefix_t pfx;

  lgt = lisp_gpe_tunnel_db_find (&key);

  if (NULL == lgt)
    {
      pool_get (lisp_gpe_tunnel_pool, lgt);
      memset (lgt, 0, sizeof (*lgt));

      lgt->key = clib_mem_alloc (sizeof (*lgt->key));
      memset (lgt->key, 0, sizeof (*lgt->key));

      lgt->key->rmt = pair->rmt_loc;
      lgt->key->lcl = pair->lcl_loc;
      lgt->key->fib_index = rloc_fib_index;

      /*
       * source the FIB entry for the RLOC so we can track its forwarding
       * chain
       */
      ip_address_to_fib_prefix (&lgt->key->rmt, &pfx);

      lgt->fib_entry_index = fib_table_entry_special_add (rloc_fib_index,
							  &pfx,
							  FIB_SOURCE_RR,
							  FIB_ENTRY_FLAG_NONE);

      hash_set_mem (lisp_gpe_tunnel_db, &lgt->key,
		    (lgt - lisp_gpe_tunnel_pool));
    }

  lgt->locks++;

  return (lgt - lisp_gpe_tunnel_pool);
}

void
lisp_gpe_tunnel_unlock (index_t lgti)
{
  lisp_gpe_tunnel_t *lgt;

  lgt = lisp_gpe_tunnel_get_i (lgti);
  lgt->locks--;

  if (0 == lgt->locks)
    {
      hash_unset_mem (lisp_gpe_tunnel_db, &lgt->key);
      clib_mem_free (lgt->key);
      pool_put (lisp_gpe_tunnel_pool, lgt);
    }
}

const lisp_gpe_tunnel_t *
lisp_gpe_tunnel_get (index_t lgti)
{
  return (lisp_gpe_tunnel_get_i (lgti));
}

/** Format LISP-GPE tunnel. */
u8 *
format_lisp_gpe_tunnel (u8 * s, va_list * args)
{
  lisp_gpe_tunnel_t *lgt = va_arg (*args, lisp_gpe_tunnel_t *);

  s = format (s, "tunnel %d\n", lgt - lisp_gpe_tunnel_pool);
  s = format (s, " fib-index: %d, locks:%d \n",
	      lgt->key->fib_index, lgt->locks);
  s = format (s, " lisp ver 0\n");

  s = format (s, " locator-pair:\n");
  s = format (s, "  local: %U remote: %U\n",
	      format_ip_address, &lgt->key->lcl,
	      format_ip_address, &lgt->key->rmt);
  s = format (s, " RLOC FIB entry: %d\n", lgt->fib_entry_index);

  return s;
}

/**
 * CLI command to show LISP-GPE tunnels.
 */
static clib_error_t *
show_lisp_gpe_tunnel_command_fn (vlib_main_t * vm,
				 unformat_input_t * input,
				 vlib_cli_command_t * cmd)
{
  lisp_gpe_tunnel_t *lgt;
  index_t index;

  if (pool_elts (lisp_gpe_tunnel_pool) == 0)
    vlib_cli_output (vm, "No lisp-gpe tunnels configured...");

  if (unformat (input, "%d", &index))
    {
      lgt = lisp_gpe_tunnel_get_i (index);
      vlib_cli_output (vm, "%U", format_lisp_gpe_tunnel, lgt);
    }
  else
    {
      /* *INDENT-OFF* */
      pool_foreach (lgt, lisp_gpe_tunnel_pool,
      ({
	vlib_cli_output (vm, "%U", format_lisp_gpe_tunnel, lgt);
      }));
      /* *INDENT-ON* */
    }

  return 0;
}

/* *INDENT-OFF* */
VLIB_CLI_COMMAND (show_lisp_gpe_tunnel_command, static) =
{
  .path = "show gpe tunnel",
  .function = show_lisp_gpe_tunnel_command_fn,
};
/* *INDENT-ON* */

static clib_error_t *
lisp_gpe_tunnel_module_init (vlib_main_t * vm)
{
  lisp_gpe_tunnel_db = hash_create_mem (0,
					sizeof (lisp_gpe_tunnel_key_t),
					sizeof (uword));

  return (NULL);
}

VLIB_INIT_FUNCTION (lisp_gpe_tunnel_module_init);

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */