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-rw-r--r--src/vnet/classify/classify_api.c555
1 files changed, 555 insertions, 0 deletions
diff --git a/src/vnet/classify/classify_api.c b/src/vnet/classify/classify_api.c
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index 00000000000..77a8b43464a
--- /dev/null
+++ b/src/vnet/classify/classify_api.c
@@ -0,0 +1,555 @@
+/*
+ *------------------------------------------------------------------
+ * 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) \
+_(CLASSIFY_SESSION_DETAILS,classify_session_details) \
+_(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
+vl_api_classify_session_details_t_handler (vl_api_classify_session_details_t *
+ mp)
+{
+ clib_warning ("BUG");
+}
+
+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:
+ */