6rd: Move to plugin

- Change toplevel plugins make target. Now builds all plugins under
  plugins/. (Apart from sample-plugin).
- Move sixrd code to plugins directory and make necessary changes to
  make it a plugin
- Remove 6rd hooks from IP lookup code

Change-Id: I447e92e3bee240cd8de01d0abac2e1708e8c27d1
Signed-off-by: Ole Troan <ot@cisco.com>

1 files changed, 0 insertions, 355 deletions

diff --git a/vnet/vnet/map/sixrd.c b/vnet/vnet/map/sixrd.c
deleted file mode 100644
index 26b4eea9a86..00000000000
--- a/vnet/vnet/map/sixrd.c
+++ /dev/null
@@ -1,355 +0,0 @@
-/*
- * Copyright (c) 2015 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.
- */
-
-#include "sixrd.h"
-
-/*
- * This code supports the following sixrd modes:
- * 
- * 32 EA bits (Complete IPv4 address is embedded):
- *   ea_bits_len = 32
- * IPv4 suffix is embedded:
- *   ea_bits_len = < 32
- * No embedded address bits (1:1 mode):
- *   ea_bits_len = 0
- */
-
-int
-sixrd_create_domain (ip6_address_t *ip6_prefix,
-                   u8 ip6_prefix_len,
-                   ip4_address_t *ip4_prefix,
-                   u8 ip4_prefix_len,
-                   ip4_address_t *ip4_src,
-                   u32 *sixrd_domain_index,
-		     u16 mtu)
-{
-  sixrd_main_t *mm = &sixrd_main;
-  ip4_main_t *im4 = &ip4_main;
-  ip6_main_t *im6 = &ip6_main;
-  sixrd_domain_t *d;
-  ip_adjacency_t adj;
-  ip4_add_del_route_args_t args4;
-  ip6_add_del_route_args_t args6;
-  u32 *p;
-
-  /* Get domain index */
-  pool_get_aligned(mm->domains, d, CLIB_CACHE_LINE_BYTES);
-  memset(d, 0, sizeof (*d));
-  *sixrd_domain_index = d - mm->domains;
-
-  /* Init domain struct */
-  d->ip4_prefix.as_u32 = ip4_prefix->as_u32;
-  d->ip4_prefix_len = ip4_prefix_len;
-  d->ip6_prefix = *ip6_prefix;
-  d->ip6_prefix_len = ip6_prefix_len;
-  d->ip4_src = *ip4_src;
-  d->mtu = mtu;
-
-  if (ip4_prefix_len < 32)
-    d->shift = 64 - ip6_prefix_len + (32 - ip4_prefix_len);
-    
-  /* Init IP adjacency */
-  memset(&adj, 0, sizeof(adj));
-  adj.explicit_fib_index = ~0;
-  adj.lookup_next_index = IP_LOOKUP_NEXT_SIXRD;
-  p = (u32 *)&adj.rewrite_data[0];
-  *p = (u32) (*sixrd_domain_index);
-
-  /* Create ip6 adjacency */
-  memset(&args6, 0, sizeof(args6));
-  args6.table_index_or_table_id = 0;
-  args6.flags = IP6_ROUTE_FLAG_ADD;
-  args6.dst_address.as_u64[0] = ip6_prefix->as_u64[0];
-  args6.dst_address.as_u64[1] = ip6_prefix->as_u64[1];
-  args6.dst_address_length = ip6_prefix_len;
-  args6.adj_index = ~0;
-  args6.add_adj = &adj;
-  args6.n_add_adj = 1;
-  ip6_add_del_route(im6, &args6);
-
-  /* Multiple SIXRD domains may share same source IPv4 TEP */
-  uword *q = ip4_get_route(im4, 0, 0, (u8 *)ip4_src, 32);
-  if (q) {
-    u32 ai = q[0];
-    ip_lookup_main_t *lm4 = &ip4_main.lookup_main;
-    ip_adjacency_t *adj4 = ip_get_adjacency(lm4, ai);
-    if (adj4->lookup_next_index != IP_LOOKUP_NEXT_SIXRD) {
-      clib_warning("BR source address already assigned: %U", format_ip4_address, ip4_src);
-      pool_put(mm->domains, d);
-      return -1;
-    }
-    /* Shared source */
-    p = (u32 *)&adj4->rewrite_data[0];
-    p[0] = ~0;
-
-    /* Add refcount, so we don't accidentially delete the route underneath someone */
-    p[1]++;
-  } else {
-    /* Create ip4 adjacency. */
-    memset(&args4, 0, sizeof(args4));
-    args4.table_index_or_table_id = 0;
-    args4.flags = IP4_ROUTE_FLAG_ADD;
-    args4.dst_address.as_u32 = ip4_src->as_u32;
-    args4.dst_address_length = 32;
-    args4.adj_index = ~0;
-    args4.add_adj = &adj;
-    args4.n_add_adj = 1;
-    ip4_add_del_route(im4, &args4);
-  }
-
-  return 0;
-}
-
-/*
- * sixrd_delete_domain
- */
-int
-sixrd_delete_domain (u32 sixrd_domain_index)
-{
-  sixrd_main_t *mm = &sixrd_main;
-  ip4_main_t *im4 = &ip4_main;
-  ip6_main_t *im6 = &ip6_main;
-  sixrd_domain_t *d;
-  ip_adjacency_t adj;
-  ip4_add_del_route_args_t args4;
-  ip6_add_del_route_args_t args6;
-
-  if (pool_is_free_index(mm->domains, sixrd_domain_index)) {
-    clib_warning("SIXRD domain delete: domain does not exist: %d", sixrd_domain_index);
-    return -1;
-  }
-
-  d = pool_elt_at_index(mm->domains, sixrd_domain_index);
-
-  memset(&adj, 0, sizeof(adj));
-  adj.explicit_fib_index = ~0;
-  adj.lookup_next_index = IP_LOOKUP_NEXT_SIXRD;
-
-  /* Delete ip6 adjacency */
-  memset(&args6, 0, sizeof (args6));
-  args6.table_index_or_table_id = 0;
-  args6.flags = IP6_ROUTE_FLAG_DEL;
-  args6.dst_address.as_u64[0] = d->ip6_prefix.as_u64[0];
-  args6.dst_address.as_u64[1] = d->ip6_prefix.as_u64[1];
-  args6.dst_address_length = d->ip6_prefix_len;
-  args6.adj_index = 0;
-  args6.add_adj = &adj;
-  args6.n_add_adj = 0;
-  ip6_add_del_route(im6, &args6);
-
-  /* Delete ip4 adjacency */
-  uword *q = ip4_get_route(im4, 0, 0, (u8 *)&d->ip4_src, 32);
-  if (q) {
-    u32 ai = q[0];
-    ip_lookup_main_t *lm4 = &ip4_main.lookup_main;
-    ip_adjacency_t *adj4 = ip_get_adjacency(lm4, ai);
-
-    u32 *p = (u32 *)&adj4->rewrite_data[0];
-    /* Delete route when no other domains use this source */
-    if (p[1] == 0) {
-      memset(&args4, 0, sizeof(args4));
-      args4.table_index_or_table_id = 0;
-      args4.flags = IP4_ROUTE_FLAG_DEL;
-      args4.dst_address.as_u32 = d->ip4_prefix.as_u32;
-      args4.dst_address_length = d->ip4_prefix_len;
-      args4.adj_index = 0;
-      args4.add_adj = &adj;
-      args4.n_add_adj = 0;
-      ip4_add_del_route(im4, &args4);
-    }
-    p[1]--;
-  }
-
-  pool_put(mm->domains, d);
-
-  return 0;
-}
-
-static clib_error_t *
-sixrd_add_domain_command_fn (vlib_main_t *vm,
-                           unformat_input_t *input,
-                           vlib_cli_command_t *cmd)
-{
-  unformat_input_t _line_input, *line_input = &_line_input;
-  ip4_address_t ip4_prefix;
-  ip6_address_t ip6_prefix;
-  ip4_address_t ip4_src;
-  u32 ip6_prefix_len, ip4_prefix_len, sixrd_domain_index;
-  u32 num_m_args = 0;
-  /* Optional arguments */
-  u32 mtu = 0;
-
-  /* Get a line of input. */
-  if (!unformat_user(input, unformat_line_input, line_input))
-    return 0;
-  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) {
-    if (unformat(line_input, "ip6-pfx %U/%d", unformat_ip6_address, &ip6_prefix, &ip6_prefix_len))
-      num_m_args++;
-    else if (unformat(line_input, "ip4-pfx %U/%d", unformat_ip4_address, &ip4_prefix, &ip4_prefix_len))
-      num_m_args++;
-    else if (unformat(line_input, "ip4-src %U", unformat_ip4_address, &ip4_src))
-      num_m_args++;
-    else if (unformat(line_input, "mtu %d", &mtu))
-      num_m_args++;
-    else
-      return clib_error_return(0, "unknown input `%U'",
-                               format_unformat_error, input);
-  }
-  unformat_free(line_input);
-
-  if (num_m_args < 3)
-    return clib_error_return(0, "mandatory argument(s) missing");
-
-  sixrd_create_domain(&ip6_prefix, ip6_prefix_len, &ip4_prefix, ip4_prefix_len,
-		      &ip4_src, &sixrd_domain_index, mtu);
-
-  return 0;
-}
-
-static clib_error_t *
-sixrd_del_domain_command_fn (vlib_main_t *vm,
-			   unformat_input_t *input,
-			   vlib_cli_command_t *cmd)
-{
-  unformat_input_t _line_input, *line_input = &_line_input;
-  u32 num_m_args = 0;
-  u32 sixrd_domain_index;
-
-  /* Get a line of input. */
-  if (! unformat_user(input, unformat_line_input, line_input))
-    return 0;
- 
-  while (unformat_check_input(line_input) != UNFORMAT_END_OF_INPUT) {
-    if (unformat(line_input, "index %d", &sixrd_domain_index))
-      num_m_args++;
-    else
-      return clib_error_return(0, "unknown input `%U'",
-				format_unformat_error, input);
-  }
-  unformat_free(line_input);
-
-  if (num_m_args != 1)
-    return clib_error_return(0, "mandatory argument(s) missing");
-
-  sixrd_delete_domain(sixrd_domain_index);
-
-  return 0;
-}
-
-static u8 *
-format_sixrd_domain (u8 *s, va_list *args)
-{
-  sixrd_domain_t *d = va_arg(*args, sixrd_domain_t *);
-  sixrd_main_t *mm = &sixrd_main;
-
-  s = format(s,
-	     "[%d] ip6-pfx %U/%d ip4-pfx %U/%d ip4-src %U mtu %d",
-	     d - mm->domains,
-	     format_ip6_address, &d->ip6_prefix, d->ip6_prefix_len,
-	     format_ip4_address, &d->ip4_prefix, d->ip4_prefix_len,
-	     format_ip4_address, &d->ip4_src, d->mtu);
-
-  return s;
-}
-
-static clib_error_t *
-show_sixrd_domain_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
-{
-  sixrd_main_t *mm = &sixrd_main;
-  sixrd_domain_t *d;
-
-  if (pool_elts(mm->domains) == 0)
-    vlib_cli_output(vm, "No SIXRD domains are configured...");
-
-  pool_foreach(d, mm->domains, ({vlib_cli_output(vm, "%U", format_sixrd_domain, d);}));
-
-  return 0;
-
-}
-
-static clib_error_t *
-show_sixrd_stats_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
-{
-  sixrd_main_t *mm = &sixrd_main;
-  sixrd_domain_t *d;
-  int domains = 0, domaincount = 0;
-  if (pool_elts (mm->domains) == 0)
-    vlib_cli_output (vm, "No SIXRD domains are configured...");
-
-  pool_foreach(d, mm->domains, ({
-    domains += sizeof(*d);
-    domaincount++;
-  }));
-
-  vlib_cli_output(vm, "SIXRD domains structure: %d\n", sizeof (sixrd_domain_t));
-  vlib_cli_output(vm, "SIXRD domains: %d (%d bytes)\n", domaincount, domains);
-
-  return 0;
-}
-
-/*
- * packet trace format function
- */
-u8 *
-format_sixrd_trace (u8 *s, va_list *args)
-{
-  CLIB_UNUSED(vlib_main_t *vm) = va_arg (*args, vlib_main_t *);
-  CLIB_UNUSED(vlib_node_t *node) = va_arg (*args, vlib_node_t *);
-  sixrd_trace_t *t = va_arg (*args, sixrd_trace_t *);
-  u32 sixrd_domain_index = t->sixrd_domain_index;
-
-  s = format(s, "SIXRD domain index: %d", sixrd_domain_index);
-
-  return s;
-}
-
-VLIB_CLI_COMMAND(sixrd_add_domain_command, static) = {
-  .path = "sixrd add domain",
-  .short_help = 
-  "sixrd add domain ip6-pfx <ip6-pfx> ip4-pfx <ip4-pfx> ip4-src <ip4-addr>",
-  .function = sixrd_add_domain_command_fn,
-};
-
-VLIB_CLI_COMMAND(sixrd_del_command, static) = {
-  .path = "sixrd del domain",
-  .short_help = 
-  "sixrd del domain index <domain>",
-  .function = sixrd_del_domain_command_fn,
-};
-
-VLIB_CLI_COMMAND(show_sixrd_domain_command, static) = {
-  .path = "show sixrd domain",
-  .function = show_sixrd_domain_command_fn,
-};
-
-VLIB_CLI_COMMAND(show_sixrd_stats_command, static) = {
-  .path = "show sixrd stats",
-  .function = show_sixrd_stats_command_fn,
-};
-
-/*
- * sixrd_init
- */
-clib_error_t *sixrd_init (vlib_main_t *vm)
-{
-  sixrd_main_t *mm = &sixrd_main;
-
-  mm->vnet_main = vnet_get_main();
-  mm->vlib_main = vm;
-
-  return 0;
-}
-
-VLIB_INIT_FUNCTION(sixrd_init);