diff options
Diffstat (limited to 'src/vnet/classify/classify_api.c')
| -rw-r--r-- | src/vnet/classify/classify_api.c | 547 |
1 files changed, 547 insertions, 0 deletions
diff --git a/src/vnet/classify/classify_api.c b/src/vnet/classify/classify_api.c new file mode 100644 index 00000000..24c7a2b9 --- /dev/null +++ b/src/vnet/classify/classify_api.c @@ -0,0 +1,547 @@ +/* + *------------------------------------------------------------------ + * classify_api.c - classify api + * + * 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/vnet.h> +#include <vlibmemory/api.h> + +#include <vnet/interface.h> +#include <vnet/api_errno.h> + +#include <vnet/classify/vnet_classify.h> +#include <vnet/classify/input_acl.h> +#include <vnet/classify/policer_classify.h> +#include <vnet/classify/flow_classify.h> + +#include <vnet/vnet_msg_enum.h> + +#define vl_typedefs /* define message structures */ +#include <vnet/vnet_all_api_h.h> +#undef vl_typedefs + +#define vl_endianfun /* define message structures */ +#include <vnet/vnet_all_api_h.h> +#undef vl_endianfun + +/* instantiate all the print functions we know about */ +#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) +#define vl_printfun +#include <vnet/vnet_all_api_h.h> +#undef vl_printfun + +#include <vlibapi/api_helper_macros.h> + +#define foreach_vpe_api_msg \ +_(CLASSIFY_ADD_DEL_TABLE, classify_add_del_table) \ +_(CLASSIFY_ADD_DEL_SESSION, classify_add_del_session) \ +_(CLASSIFY_TABLE_IDS,classify_table_ids) \ +_(CLASSIFY_TABLE_BY_INTERFACE, classify_table_by_interface) \ +_(CLASSIFY_TABLE_INFO,classify_table_info) \ +_(CLASSIFY_SESSION_DUMP,classify_session_dump) \ +_(POLICER_CLASSIFY_SET_INTERFACE, policer_classify_set_interface) \ +_(POLICER_CLASSIFY_DUMP, policer_classify_dump) \ +_(FLOW_CLASSIFY_SET_INTERFACE, flow_classify_set_interface) \ +_(FLOW_CLASSIFY_DUMP, flow_classify_dump) + +#define foreach_classify_add_del_table_field \ +_(table_index) \ +_(nbuckets) \ +_(memory_size) \ +_(skip_n_vectors) \ +_(match_n_vectors) \ +_(next_table_index) \ +_(miss_next_index) \ +_(current_data_flag) \ +_(current_data_offset) + +static void vl_api_classify_add_del_table_t_handler + (vl_api_classify_add_del_table_t * mp) +{ + vl_api_classify_add_del_table_reply_t *rmp; + vnet_classify_main_t *cm = &vnet_classify_main; + vnet_classify_table_t *t; + int rv; + +#define _(a) u32 a; + foreach_classify_add_del_table_field; +#undef _ + +#define _(a) a = ntohl(mp->a); + foreach_classify_add_del_table_field; +#undef _ + + /* The underlying API fails silently, on purpose, so check here */ + if (mp->is_add == 0) /* delete */ + { + if (pool_is_free_index (cm->tables, table_index)) + { + rv = VNET_API_ERROR_NO_SUCH_TABLE; + goto out; + } + } + else /* add or update */ + { + if (table_index != ~0 && pool_is_free_index (cm->tables, table_index)) + table_index = ~0; + } + + rv = vnet_classify_add_del_table + (cm, mp->mask, nbuckets, memory_size, + skip_n_vectors, match_n_vectors, + next_table_index, miss_next_index, &table_index, + current_data_flag, current_data_offset, mp->is_add, mp->del_chain); + +out: + /* *INDENT-OFF* */ + REPLY_MACRO2(VL_API_CLASSIFY_ADD_DEL_TABLE_REPLY, + ({ + if (rv == 0 && mp->is_add) + { + t = pool_elt_at_index (cm->tables, table_index); + rmp->skip_n_vectors = ntohl(t->skip_n_vectors); + rmp->match_n_vectors = ntohl(t->match_n_vectors); + rmp->new_table_index = ntohl(table_index); + } + else + { + rmp->skip_n_vectors = ~0; + rmp->match_n_vectors = ~0; + rmp->new_table_index = ~0; + } + })); + /* *INDENT-ON* */ +} + +static void vl_api_classify_add_del_session_t_handler + (vl_api_classify_add_del_session_t * mp) +{ + vnet_classify_main_t *cm = &vnet_classify_main; + vl_api_classify_add_del_session_reply_t *rmp; + int rv; + u32 table_index, hit_next_index, opaque_index, metadata; + i32 advance; + u8 action; + + table_index = ntohl (mp->table_index); + hit_next_index = ntohl (mp->hit_next_index); + opaque_index = ntohl (mp->opaque_index); + advance = ntohl (mp->advance); + action = mp->action; + metadata = ntohl (mp->metadata); + + rv = vnet_classify_add_del_session + (cm, table_index, mp->match, hit_next_index, opaque_index, + advance, action, metadata, mp->is_add); + + REPLY_MACRO (VL_API_CLASSIFY_ADD_DEL_SESSION_REPLY); +} + +static void + vl_api_policer_classify_set_interface_t_handler + (vl_api_policer_classify_set_interface_t * mp) +{ + vlib_main_t *vm = vlib_get_main (); + vl_api_policer_classify_set_interface_reply_t *rmp; + int rv; + u32 sw_if_index, ip4_table_index, ip6_table_index, l2_table_index; + + ip4_table_index = ntohl (mp->ip4_table_index); + ip6_table_index = ntohl (mp->ip6_table_index); + l2_table_index = ntohl (mp->l2_table_index); + sw_if_index = ntohl (mp->sw_if_index); + + VALIDATE_SW_IF_INDEX (mp); + + rv = vnet_set_policer_classify_intfc (vm, sw_if_index, ip4_table_index, + ip6_table_index, l2_table_index, + mp->is_add); + + BAD_SW_IF_INDEX_LABEL; + + REPLY_MACRO (VL_API_POLICER_CLASSIFY_SET_INTERFACE_REPLY); +} + +static void +send_policer_classify_details (u32 sw_if_index, + u32 table_index, + unix_shared_memory_queue_t * q, u32 context) +{ + vl_api_policer_classify_details_t *mp; + + mp = vl_msg_api_alloc (sizeof (*mp)); + memset (mp, 0, sizeof (*mp)); + mp->_vl_msg_id = ntohs (VL_API_POLICER_CLASSIFY_DETAILS); + mp->context = context; + mp->sw_if_index = htonl (sw_if_index); + mp->table_index = htonl (table_index); + + vl_msg_api_send_shmem (q, (u8 *) & mp); +} + +static void +vl_api_policer_classify_dump_t_handler (vl_api_policer_classify_dump_t * mp) +{ + unix_shared_memory_queue_t *q; + policer_classify_main_t *pcm = &policer_classify_main; + u32 *vec_tbl; + int i; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + return; + + vec_tbl = pcm->classify_table_index_by_sw_if_index[mp->type]; + + if (vec_len (vec_tbl)) + { + for (i = 0; i < vec_len (vec_tbl); i++) + { + if (vec_elt (vec_tbl, i) == ~0) + continue; + + send_policer_classify_details (i, vec_elt (vec_tbl, i), q, + mp->context); + } + } +} + +static void +vl_api_classify_table_ids_t_handler (vl_api_classify_table_ids_t * mp) +{ + unix_shared_memory_queue_t *q; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + return; + + vnet_classify_main_t *cm = &vnet_classify_main; + vnet_classify_table_t *t; + u32 *table_ids = 0; + u32 count; + + /* *INDENT-OFF* */ + pool_foreach (t, cm->tables, + ({ + vec_add1 (table_ids, ntohl(t - cm->tables)); + })); + /* *INDENT-ON* */ + count = vec_len (table_ids); + + vl_api_classify_table_ids_reply_t *rmp; + rmp = vl_msg_api_alloc_as_if_client (sizeof (*rmp) + count * sizeof (u32)); + rmp->_vl_msg_id = ntohs (VL_API_CLASSIFY_TABLE_IDS_REPLY); + rmp->context = mp->context; + rmp->count = ntohl (count); + clib_memcpy (rmp->ids, table_ids, count * sizeof (u32)); + rmp->retval = 0; + + vl_msg_api_send_shmem (q, (u8 *) & rmp); + + vec_free (table_ids); +} + +static void + vl_api_classify_table_by_interface_t_handler + (vl_api_classify_table_by_interface_t * mp) +{ + vl_api_classify_table_by_interface_reply_t *rmp; + int rv = 0; + + u32 sw_if_index = ntohl (mp->sw_if_index); + u32 *acl = 0; + + vec_validate (acl, INPUT_ACL_N_TABLES - 1); + vec_set (acl, ~0); + + VALIDATE_SW_IF_INDEX (mp); + + input_acl_main_t *am = &input_acl_main; + + int if_idx; + u32 type; + + for (type = 0; type < INPUT_ACL_N_TABLES; type++) + { + u32 *vec_tbl = am->classify_table_index_by_sw_if_index[type]; + if (vec_len (vec_tbl)) + { + for (if_idx = 0; if_idx < vec_len (vec_tbl); if_idx++) + { + if (vec_elt (vec_tbl, if_idx) == ~0 || sw_if_index != if_idx) + { + continue; + } + acl[type] = vec_elt (vec_tbl, if_idx); + } + } + } + + BAD_SW_IF_INDEX_LABEL; + + /* *INDENT-OFF* */ + REPLY_MACRO2(VL_API_CLASSIFY_TABLE_BY_INTERFACE_REPLY, + ({ + rmp->sw_if_index = ntohl(sw_if_index); + rmp->l2_table_id = ntohl(acl[INPUT_ACL_TABLE_L2]); + rmp->ip4_table_id = ntohl(acl[INPUT_ACL_TABLE_IP4]); + rmp->ip6_table_id = ntohl(acl[INPUT_ACL_TABLE_IP6]); + })); + /* *INDENT-ON* */ + vec_free (acl); +} + +static void +vl_api_classify_table_info_t_handler (vl_api_classify_table_info_t * mp) +{ + unix_shared_memory_queue_t *q; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + return; + + vl_api_classify_table_info_reply_t *rmp = 0; + + vnet_classify_main_t *cm = &vnet_classify_main; + u32 table_id = ntohl (mp->table_id); + vnet_classify_table_t *t; + + /* *INDENT-OFF* */ + pool_foreach (t, cm->tables, + ({ + if (table_id == t - cm->tables) + { + rmp = vl_msg_api_alloc_as_if_client + (sizeof (*rmp) + t->match_n_vectors * sizeof (u32x4)); + rmp->_vl_msg_id = ntohs (VL_API_CLASSIFY_TABLE_INFO_REPLY); + rmp->context = mp->context; + rmp->table_id = ntohl(table_id); + rmp->nbuckets = ntohl(t->nbuckets); + rmp->match_n_vectors = ntohl(t->match_n_vectors); + rmp->skip_n_vectors = ntohl(t->skip_n_vectors); + rmp->active_sessions = ntohl(t->active_elements); + rmp->next_table_index = ntohl(t->next_table_index); + rmp->miss_next_index = ntohl(t->miss_next_index); + rmp->mask_length = ntohl(t->match_n_vectors * sizeof (u32x4)); + clib_memcpy(rmp->mask, t->mask, t->match_n_vectors * sizeof(u32x4)); + rmp->retval = 0; + break; + } + })); + /* *INDENT-ON* */ + + if (rmp == 0) + { + rmp = vl_msg_api_alloc (sizeof (*rmp)); + rmp->_vl_msg_id = ntohs ((VL_API_CLASSIFY_TABLE_INFO_REPLY)); + rmp->context = mp->context; + rmp->retval = ntohl (VNET_API_ERROR_CLASSIFY_TABLE_NOT_FOUND); + } + + vl_msg_api_send_shmem (q, (u8 *) & rmp); +} + +static void +send_classify_session_details (unix_shared_memory_queue_t * q, + u32 table_id, + u32 match_length, + vnet_classify_entry_t * e, u32 context) +{ + vl_api_classify_session_details_t *rmp; + + rmp = vl_msg_api_alloc (sizeof (*rmp)); + memset (rmp, 0, sizeof (*rmp)); + rmp->_vl_msg_id = ntohs (VL_API_CLASSIFY_SESSION_DETAILS); + rmp->context = context; + rmp->table_id = ntohl (table_id); + rmp->hit_next_index = ntohl (e->next_index); + rmp->advance = ntohl (e->advance); + rmp->opaque_index = ntohl (e->opaque_index); + rmp->match_length = ntohl (match_length); + clib_memcpy (rmp->match, e->key, match_length); + + vl_msg_api_send_shmem (q, (u8 *) & rmp); +} + +static void +vl_api_classify_session_dump_t_handler (vl_api_classify_session_dump_t * mp) +{ + vnet_classify_main_t *cm = &vnet_classify_main; + unix_shared_memory_queue_t *q; + + u32 table_id = ntohl (mp->table_id); + vnet_classify_table_t *t; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (!q) + return; + + /* *INDENT-OFF* */ + pool_foreach (t, cm->tables, + ({ + if (table_id == t - cm->tables) + { + vnet_classify_bucket_t * b; + vnet_classify_entry_t * v, * save_v; + int i, j, k; + + for (i = 0; i < t->nbuckets; i++) + { + b = &t->buckets [i]; + if (b->offset == 0) + continue; + + save_v = vnet_classify_get_entry (t, b->offset); + for (j = 0; j < (1<<b->log2_pages); j++) + { + for (k = 0; k < t->entries_per_page; k++) + { + v = vnet_classify_entry_at_index + (t, save_v, j*t->entries_per_page + k); + if (vnet_classify_entry_is_free (v)) + continue; + + send_classify_session_details + (q, table_id, t->match_n_vectors * sizeof (u32x4), + v, mp->context); + } + } + } + break; + } + })); + /* *INDENT-ON* */ +} + +static void + vl_api_flow_classify_set_interface_t_handler + (vl_api_flow_classify_set_interface_t * mp) +{ + vlib_main_t *vm = vlib_get_main (); + vl_api_flow_classify_set_interface_reply_t *rmp; + int rv; + u32 sw_if_index, ip4_table_index, ip6_table_index; + + ip4_table_index = ntohl (mp->ip4_table_index); + ip6_table_index = ntohl (mp->ip6_table_index); + sw_if_index = ntohl (mp->sw_if_index); + + VALIDATE_SW_IF_INDEX (mp); + + rv = vnet_set_flow_classify_intfc (vm, sw_if_index, ip4_table_index, + ip6_table_index, mp->is_add); + + BAD_SW_IF_INDEX_LABEL; + + REPLY_MACRO (VL_API_FLOW_CLASSIFY_SET_INTERFACE_REPLY); +} + +static void +send_flow_classify_details (u32 sw_if_index, + u32 table_index, + unix_shared_memory_queue_t * q, u32 context) +{ + vl_api_flow_classify_details_t *mp; + + mp = vl_msg_api_alloc (sizeof (*mp)); + memset (mp, 0, sizeof (*mp)); + mp->_vl_msg_id = ntohs (VL_API_FLOW_CLASSIFY_DETAILS); + mp->context = context; + mp->sw_if_index = htonl (sw_if_index); + mp->table_index = htonl (table_index); + + vl_msg_api_send_shmem (q, (u8 *) & mp); +} + +static void +vl_api_flow_classify_dump_t_handler (vl_api_flow_classify_dump_t * mp) +{ + unix_shared_memory_queue_t *q; + flow_classify_main_t *pcm = &flow_classify_main; + u32 *vec_tbl; + int i; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + return; + + vec_tbl = pcm->classify_table_index_by_sw_if_index[mp->type]; + + if (vec_len (vec_tbl)) + { + for (i = 0; i < vec_len (vec_tbl); i++) + { + if (vec_elt (vec_tbl, i) == ~0) + continue; + + send_flow_classify_details (i, vec_elt (vec_tbl, i), q, + mp->context); + } + } +} + +/* + * classify_api_hookup + * Add vpe's API message handlers to the table. + * vlib has alread mapped shared memory and + * added the client registration handlers. + * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process() + */ +#define vl_msg_name_crc_list +#include <vnet/vnet_all_api_h.h> +#undef vl_msg_name_crc_list + +static void +setup_message_id_table (api_main_t * am) +{ +#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id); + foreach_vl_msg_name_crc_classify; +#undef _ +} + +static clib_error_t * +classify_api_hookup (vlib_main_t * vm) +{ + api_main_t *am = &api_main; + +#define _(N,n) \ + vl_msg_api_set_handlers(VL_API_##N, #n, \ + vl_api_##n##_t_handler, \ + vl_noop_handler, \ + vl_api_##n##_t_endian, \ + vl_api_##n##_t_print, \ + sizeof(vl_api_##n##_t), 1); + foreach_vpe_api_msg; +#undef _ + + /* + * Set up the (msg_name, crc, message-id) table + */ + setup_message_id_table (am); + + return 0; +} + +VLIB_API_INIT_FUNCTION (classify_api_hookup); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |