+++ /dev/null
-/*
- * 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 <vnet/ip/ip.h>
-#include <vnet/classify/vnet_classify.h>
-#include <vnet/classify/input_acl.h>
-
-typedef struct
-{
- u32 sw_if_index;
- u32 next_index;
- u32 table_index;
- u32 offset;
-} ip_inacl_trace_t;
-
-/* packet trace format function */
-static u8 *
-format_ip_inacl_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 *);
- ip_inacl_trace_t *t = va_arg (*args, ip_inacl_trace_t *);
-
- s = format (s, "INACL: sw_if_index %d, next_index %d, table %d, offset %d",
- t->sw_if_index, t->next_index, t->table_index, t->offset);
- return s;
-}
-
-vlib_node_registration_t ip4_inacl_node;
-vlib_node_registration_t ip6_inacl_node;
-
-#define foreach_ip_inacl_error \
-_(MISS, "input ACL misses") \
-_(HIT, "input ACL hits") \
-_(CHAIN_HIT, "input ACL hits after chain walk")
-
-typedef enum
-{
-#define _(sym,str) IP_INACL_ERROR_##sym,
- foreach_ip_inacl_error
-#undef _
- IP_INACL_N_ERROR,
-} ip_inacl_error_t;
-
-static char *ip_inacl_error_strings[] = {
-#define _(sym,string) string,
- foreach_ip_inacl_error
-#undef _
-};
-
-static inline uword
-ip_inacl_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame, int is_ip4)
-{
- u32 n_left_from, *from, *to_next;
- acl_next_index_t next_index;
- input_acl_main_t *am = &input_acl_main;
- vnet_classify_main_t *vcm = am->vnet_classify_main;
- f64 now = vlib_time_now (vm);
- u32 hits = 0;
- u32 misses = 0;
- u32 chain_hits = 0;
- input_acl_table_id_t tid;
- vlib_node_runtime_t *error_node;
- u32 n_next_nodes;
-
- n_next_nodes = node->n_next_nodes;
-
- if (is_ip4)
- {
- tid = INPUT_ACL_TABLE_IP4;
- error_node = vlib_node_get_runtime (vm, ip4_input_node.index);
- }
- else
- {
- tid = INPUT_ACL_TABLE_IP6;
- error_node = vlib_node_get_runtime (vm, ip6_input_node.index);
- }
-
- from = vlib_frame_vector_args (frame);
- n_left_from = frame->n_vectors;
-
- /* First pass: compute hashes */
-
- while (n_left_from > 2)
- {
- vlib_buffer_t *b0, *b1;
- u32 bi0, bi1;
- u8 *h0, *h1;
- u32 sw_if_index0, sw_if_index1;
- u32 table_index0, table_index1;
- vnet_classify_table_t *t0, *t1;
-
- /* prefetch next iteration */
- {
- vlib_buffer_t *p1, *p2;
-
- p1 = vlib_get_buffer (vm, from[1]);
- p2 = vlib_get_buffer (vm, from[2]);
-
- vlib_prefetch_buffer_header (p1, STORE);
- CLIB_PREFETCH (p1->data, CLIB_CACHE_LINE_BYTES, STORE);
- vlib_prefetch_buffer_header (p2, STORE);
- CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, STORE);
- }
-
- bi0 = from[0];
- b0 = vlib_get_buffer (vm, bi0);
-
- bi1 = from[1];
- b1 = vlib_get_buffer (vm, bi1);
-
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- table_index0 =
- am->classify_table_index_by_sw_if_index[tid][sw_if_index0];
-
- sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
- table_index1 =
- am->classify_table_index_by_sw_if_index[tid][sw_if_index1];
-
- t0 = pool_elt_at_index (vcm->tables, table_index0);
-
- t1 = pool_elt_at_index (vcm->tables, table_index1);
-
- if (t0->current_data_flag == CLASSIFY_FLAG_USE_CURR_DATA)
- h0 = (void *) vlib_buffer_get_current (b0) + t0->current_data_offset;
- else
- h0 = b0->data;
-
- vnet_buffer (b0)->l2_classify.hash =
- vnet_classify_hash_packet (t0, (u8 *) h0);
-
- vnet_classify_prefetch_bucket (t0, vnet_buffer (b0)->l2_classify.hash);
-
- if (t1->current_data_flag == CLASSIFY_FLAG_USE_CURR_DATA)
- h1 = (void *) vlib_buffer_get_current (b1) + t1->current_data_offset;
- else
- h1 = b1->data;
-
- vnet_buffer (b1)->l2_classify.hash =
- vnet_classify_hash_packet (t1, (u8 *) h1);
-
- vnet_classify_prefetch_bucket (t1, vnet_buffer (b1)->l2_classify.hash);
-
- vnet_buffer (b0)->l2_classify.table_index = table_index0;
-
- vnet_buffer (b1)->l2_classify.table_index = table_index1;
-
- from += 2;
- n_left_from -= 2;
- }
-
- while (n_left_from > 0)
- {
- vlib_buffer_t *b0;
- u32 bi0;
- u8 *h0;
- u32 sw_if_index0;
- u32 table_index0;
- vnet_classify_table_t *t0;
-
- bi0 = from[0];
- b0 = vlib_get_buffer (vm, bi0);
-
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- table_index0 =
- am->classify_table_index_by_sw_if_index[tid][sw_if_index0];
-
- t0 = pool_elt_at_index (vcm->tables, table_index0);
-
- if (t0->current_data_flag == CLASSIFY_FLAG_USE_CURR_DATA)
- h0 = (void *) vlib_buffer_get_current (b0) + t0->current_data_offset;
- else
- h0 = b0->data;
-
- vnet_buffer (b0)->l2_classify.hash =
- vnet_classify_hash_packet (t0, (u8 *) h0);
-
- vnet_buffer (b0)->l2_classify.table_index = table_index0;
- vnet_classify_prefetch_bucket (t0, vnet_buffer (b0)->l2_classify.hash);
-
- from++;
- n_left_from--;
- }
-
- next_index = node->cached_next_index;
- from = vlib_frame_vector_args (frame);
- n_left_from = frame->n_vectors;
-
- while (n_left_from > 0)
- {
- u32 n_left_to_next;
-
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
- /* Not enough load/store slots to dual loop... */
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- u32 bi0;
- vlib_buffer_t *b0;
- u32 next0 = ACL_NEXT_INDEX_DENY;
- u32 table_index0;
- vnet_classify_table_t *t0;
- vnet_classify_entry_t *e0;
- u64 hash0;
- u8 *h0;
- u8 error0;
-
- /* Stride 3 seems to work best */
- if (PREDICT_TRUE (n_left_from > 3))
- {
- vlib_buffer_t *p1 = vlib_get_buffer (vm, from[3]);
- vnet_classify_table_t *tp1;
- u32 table_index1;
- u64 phash1;
-
- table_index1 = vnet_buffer (p1)->l2_classify.table_index;
-
- if (PREDICT_TRUE (table_index1 != ~0))
- {
- tp1 = pool_elt_at_index (vcm->tables, table_index1);
- phash1 = vnet_buffer (p1)->l2_classify.hash;
- vnet_classify_prefetch_entry (tp1, phash1);
- }
- }
-
- /* speculatively enqueue b0 to the current next frame */
- bi0 = from[0];
- to_next[0] = bi0;
- from += 1;
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
-
- b0 = vlib_get_buffer (vm, bi0);
- table_index0 = vnet_buffer (b0)->l2_classify.table_index;
- e0 = 0;
- t0 = 0;
- vnet_get_config_data (am->vnet_config_main[tid],
- &b0->current_config_index, &next0,
- /* # bytes of config data */ 0);
-
- vnet_buffer (b0)->l2_classify.opaque_index = ~0;
-
- if (PREDICT_TRUE (table_index0 != ~0))
- {
- hash0 = vnet_buffer (b0)->l2_classify.hash;
- t0 = pool_elt_at_index (vcm->tables, table_index0);
-
- if (t0->current_data_flag == CLASSIFY_FLAG_USE_CURR_DATA)
- h0 =
- (void *) vlib_buffer_get_current (b0) +
- t0->current_data_offset;
- else
- h0 = b0->data;
-
- e0 = vnet_classify_find_entry (t0, (u8 *) h0, hash0, now);
- if (e0)
- {
- vnet_buffer (b0)->l2_classify.opaque_index
- = e0->opaque_index;
- vlib_buffer_advance (b0, e0->advance);
-
- next0 = (e0->next_index < n_next_nodes) ?
- e0->next_index : next0;
-
- hits++;
-
- if (is_ip4)
- error0 = (next0 == ACL_NEXT_INDEX_DENY) ?
- IP4_ERROR_INACL_SESSION_DENY : IP4_ERROR_NONE;
- else
- error0 = (next0 == ACL_NEXT_INDEX_DENY) ?
- IP6_ERROR_INACL_SESSION_DENY : IP6_ERROR_NONE;
- b0->error = error_node->errors[error0];
-
- if (e0->action == CLASSIFY_ACTION_SET_IP4_FIB_INDEX ||
- e0->action == CLASSIFY_ACTION_SET_IP6_FIB_INDEX)
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = e0->metadata;
- else if (e0->action == CLASSIFY_ACTION_SET_METADATA)
- vnet_buffer (b0)->ip.adj_index[VLIB_TX] = e0->metadata;
- }
- else
- {
- while (1)
- {
- if (PREDICT_TRUE (t0->next_table_index != ~0))
- t0 = pool_elt_at_index (vcm->tables,
- t0->next_table_index);
- else
- {
- next0 = (t0->miss_next_index < n_next_nodes) ?
- t0->miss_next_index : next0;
-
- misses++;
-
- if (is_ip4)
- error0 = (next0 == ACL_NEXT_INDEX_DENY) ?
- IP4_ERROR_INACL_TABLE_MISS : IP4_ERROR_NONE;
- else
- error0 = (next0 == ACL_NEXT_INDEX_DENY) ?
- IP6_ERROR_INACL_TABLE_MISS : IP6_ERROR_NONE;
- b0->error = error_node->errors[error0];
- break;
- }
-
- if (t0->current_data_flag ==
- CLASSIFY_FLAG_USE_CURR_DATA)
- h0 =
- (void *) vlib_buffer_get_current (b0) +
- t0->current_data_offset;
- else
- h0 = b0->data;
-
- hash0 = vnet_classify_hash_packet (t0, (u8 *) h0);
- e0 = vnet_classify_find_entry
- (t0, (u8 *) h0, hash0, now);
- if (e0)
- {
- vnet_buffer (b0)->l2_classify.opaque_index
- = e0->opaque_index;
- vlib_buffer_advance (b0, e0->advance);
- next0 = (e0->next_index < n_next_nodes) ?
- e0->next_index : next0;
- hits++;
- chain_hits++;
-
- if (is_ip4)
- error0 = (next0 == ACL_NEXT_INDEX_DENY) ?
- IP4_ERROR_INACL_SESSION_DENY : IP4_ERROR_NONE;
- else
- error0 = (next0 == ACL_NEXT_INDEX_DENY) ?
- IP6_ERROR_INACL_SESSION_DENY : IP6_ERROR_NONE;
- b0->error = error_node->errors[error0];
-
- if (e0->action == CLASSIFY_ACTION_SET_IP4_FIB_INDEX
- || e0->action ==
- CLASSIFY_ACTION_SET_IP6_FIB_INDEX)
- vnet_buffer (b0)->sw_if_index[VLIB_TX] =
- e0->metadata;
- break;
- }
- }
- }
- }
-
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- ip_inacl_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- t->next_index = next0;
- t->table_index = t0 ? t0 - vcm->tables : ~0;
- t->offset = (e0 && t0) ? vnet_classify_get_offset (t0, e0) : ~0;
- }
-
- /* verify speculative enqueue, maybe switch current next frame */
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, next0);
- }
-
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
-
- vlib_node_increment_counter (vm, node->node_index,
- IP_INACL_ERROR_MISS, misses);
- vlib_node_increment_counter (vm, node->node_index,
- IP_INACL_ERROR_HIT, hits);
- vlib_node_increment_counter (vm, node->node_index,
- IP_INACL_ERROR_CHAIN_HIT, chain_hits);
- return frame->n_vectors;
-}
-
-static uword
-ip4_inacl (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
- return ip_inacl_inline (vm, node, frame, 1 /* is_ip4 */ );
-}
-
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (ip4_inacl_node) = {
- .function = ip4_inacl,
- .name = "ip4-inacl",
- .vector_size = sizeof (u32),
- .format_trace = format_ip_inacl_trace,
- .n_errors = ARRAY_LEN(ip_inacl_error_strings),
- .error_strings = ip_inacl_error_strings,
-
- .n_next_nodes = ACL_NEXT_INDEX_N_NEXT,
- .next_nodes = {
- [ACL_NEXT_INDEX_DENY] = "ip4-drop",
- },
-};
-/* *INDENT-ON* */
-
-VLIB_NODE_FUNCTION_MULTIARCH (ip4_inacl_node, ip4_inacl);
-
-static uword
-ip6_inacl (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
- return ip_inacl_inline (vm, node, frame, 0 /* is_ip4 */ );
-}
-
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (ip6_inacl_node) = {
- .function = ip6_inacl,
- .name = "ip6-inacl",
- .vector_size = sizeof (u32),
- .format_trace = format_ip_inacl_trace,
- .n_errors = ARRAY_LEN(ip_inacl_error_strings),
- .error_strings = ip_inacl_error_strings,
-
- .n_next_nodes = ACL_NEXT_INDEX_N_NEXT,
- .next_nodes = {
- [ACL_NEXT_INDEX_DENY] = "ip6-drop",
- },
-};
-/* *INDENT-ON* */
-
-VLIB_NODE_FUNCTION_MULTIARCH (ip6_inacl_node, ip6_inacl);
-
-static clib_error_t *
-ip_inacl_init (vlib_main_t * vm)
-{
- return 0;
-}
-
-VLIB_INIT_FUNCTION (ip_inacl_init);
-
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff