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Diffstat (limited to 'src/vnet/teib/teib.c')
| -rw-r--r-- | src/vnet/teib/teib.c | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/src/vnet/teib/teib.c b/src/vnet/teib/teib.c new file mode 100644 index 00000000000..e392b49e86b --- /dev/null +++ b/src/vnet/teib/teib.c @@ -0,0 +1,244 @@ +/* + * teib.h: next-hop resolution + * + * 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. + */ + + +#include <vnet/teib/teib.h> +#include <vnet/fib/fib_table.h> +#include <vnet/adj/adj_midchain.h> + +typedef struct teib_key_t_ +{ + ip46_address_t tk_peer; + u32 tk_sw_if_index; +} teib_key_t; + +struct teib_entry_t_ +{ + teib_key_t *te_key; + fib_prefix_t te_nh; + u32 te_fib_index; +}; + +static uword *teib_db; +static teib_entry_t *teib_pool; +static teib_vft_t *teib_vfts; + +#define TEIB_NOTIFY(_te, _fn) { \ + teib_vft_t *_vft; \ + vec_foreach(_vft, teib_vfts) { \ + if (_vft->_fn) { \ + _vft->_fn(_te); \ + } \ + } \ +} + +u32 +teib_entry_get_sw_if_index (const teib_entry_t * te) +{ + return (te->te_key->tk_sw_if_index); +} + +u32 +teib_entry_get_fib_index (const teib_entry_t * te) +{ + return (te->te_fib_index); +} + +const ip46_address_t * +teib_entry_get_peer (const teib_entry_t * te) +{ + return (&te->te_key->tk_peer); +} + +const fib_prefix_t * +teib_entry_get_nh (const teib_entry_t * te) +{ + return (&te->te_nh); +} + +void +teib_entry_adj_stack (const teib_entry_t * te, adj_index_t ai) +{ + adj_midchain_delegate_stack (ai, te->te_fib_index, &te->te_nh); +} + +teib_entry_t * +teib_entry_get (index_t tei) +{ + return pool_elt_at_index (teib_pool, tei); +} + +teib_entry_t * +teib_entry_find (u32 sw_if_index, const ip46_address_t * peer) +{ + teib_key_t nk = { + .tk_peer = *peer, + .tk_sw_if_index = sw_if_index, + }; + uword *p; + + p = hash_get_mem (teib_db, &nk); + + if (NULL != p) + return teib_entry_get (p[0]); + + return (NULL); +} + +int +teib_entry_add (u32 sw_if_index, + const ip46_address_t * peer, + u32 nh_table_id, const ip46_address_t * nh) +{ + fib_protocol_t fproto; + teib_entry_t *te; + u32 fib_index; + index_t tei; + + fproto = (ip46_address_is_ip4 (nh) ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6); + + fib_index = fib_table_find (fproto, nh_table_id); + + if (~0 == fib_index) + { + return (VNET_API_ERROR_NO_SUCH_FIB); + } + + te = teib_entry_find (sw_if_index, peer); + + if (NULL == te) + { + teib_key_t nk = { + .tk_peer = *peer, + .tk_sw_if_index = sw_if_index, + }; + teib_entry_t *te; + + pool_get_zero (teib_pool, te); + + tei = te - teib_pool; + te->te_key = clib_mem_alloc (sizeof (*te->te_key)); + clib_memcpy (te->te_key, &nk, sizeof (*te->te_key)); + + ip46_address_copy (&te->te_nh.fp_addr, nh); + te->te_nh.fp_proto = fproto; + te->te_nh.fp_len = (te->te_nh.fp_proto == FIB_PROTOCOL_IP4 ? 32 : 128); + te->te_fib_index = fib_index; + + hash_set_mem (teib_db, te->te_key, tei); + + TEIB_NOTIFY (te, nv_added); + } + else + return (VNET_API_ERROR_ENTRY_ALREADY_EXISTS); + + return 0; +} + +int +teib_entry_del (u32 sw_if_index, const ip46_address_t * peer) +{ + teib_entry_t *te; + + te = teib_entry_find (sw_if_index, peer); + + if (te != NULL) + { + hash_unset_mem (teib_db, te->te_key); + + TEIB_NOTIFY (te, nv_deleted); + + clib_mem_free (te->te_key); + pool_put (teib_pool, te); + } + else + return (VNET_API_ERROR_ENTRY_ALREADY_EXISTS); + + return 0; +} + +u8 * +format_teib_entry (u8 * s, va_list * args) +{ + index_t tei = va_arg (*args, index_t); + vnet_main_t *vnm = vnet_get_main (); + teib_entry_t *te; + + te = teib_entry_get (tei); + + s = format (s, "[%d] ", tei); + s = format (s, "%U:", format_vnet_sw_if_index_name, + vnm, te->te_key->tk_sw_if_index); + s = format (s, " %U", format_ip46_address, + &te->te_key->tk_peer, IP46_TYPE_ANY); + s = format (s, " via [%d]:%U", + fib_table_get_table_id (te->te_fib_index, te->te_nh.fp_proto), + format_fib_prefix, &te->te_nh); + + return (s); +} + +void +teib_walk (teib_walk_cb_t fn, void *ctx) +{ + index_t tei; + + /* *INDENT-OFF* */ + pool_foreach_index(tei, teib_pool, + ({ + fn(tei, ctx); + })); + /* *INDENT-ON* */ +} + +void +teib_walk_itf (u32 sw_if_index, teib_walk_cb_t fn, void *ctx) +{ + index_t tei; + + /* *INDENT-OFF* */ + pool_foreach_index(tei, teib_pool, + ({ + if (sw_if_index == teib_entry_get_sw_if_index(teib_entry_get(tei))) + fn(tei, ctx); + })); + /* *INDENT-ON* */ +} + +void +teib_register (const teib_vft_t * vft) +{ + vec_add1 (teib_vfts, *vft); +} + +static clib_error_t * +teib_init (vlib_main_t * vm) +{ + teib_db = hash_create_mem (0, sizeof (teib_key_t), sizeof (u32)); + + return (NULL); +} + +VLIB_INIT_FUNCTION (teib_init); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |