diff options
Diffstat (limited to 'src/vnet/l2/l2_input_acl.c')
| -rw-r--r-- | src/vnet/l2/l2_input_acl.c | 431 |
1 files changed, 0 insertions, 431 deletions
diff --git a/src/vnet/l2/l2_input_acl.c b/src/vnet/l2/l2_input_acl.c deleted file mode 100644 index 84030888c04..00000000000 --- a/src/vnet/l2/l2_input_acl.c +++ /dev/null @@ -1,431 +0,0 @@ -/* - * l2_input_acl.c : layer 2 input acl processing - * - * Copyright (c) 2013 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 <vlib/vlib.h> -#include <vnet/vnet.h> -#include <vnet/pg/pg.h> -#include <vnet/ethernet/ethernet.h> -#include <vnet/ethernet/packet.h> -#include <vnet/ip/ip_packet.h> -#include <vnet/ip/ip4_packet.h> -#include <vnet/ip/ip6_packet.h> -#include <vlib/cli.h> -#include <vnet/l2/l2_input.h> -#include <vnet/l2/feat_bitmap.h> - -#include <vppinfra/error.h> -#include <vppinfra/hash.h> -#include <vppinfra/cache.h> - -#include <vnet/classify/vnet_classify.h> -#include <vnet/classify/input_acl.h> - -typedef struct -{ - - /* Next nodes for each feature */ - u32 feat_next_node_index[32]; - - /* convenience variables */ - vlib_main_t *vlib_main; - vnet_main_t *vnet_main; -} l2_inacl_main_t; - -typedef struct -{ - u32 sw_if_index; - u32 next_index; - u32 table_index; - u32 offset; -} l2_inacl_trace_t; - -/* packet trace format function */ -static u8 * -format_l2_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 *); - l2_inacl_trace_t *t = va_arg (*args, l2_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; -} - -l2_inacl_main_t l2_inacl_main; - -static vlib_node_registration_t l2_inacl_node; - -#define foreach_l2_inacl_error \ -_(NONE, "valid input ACL packets") \ -_(MISS, "input ACL misses") \ -_(HIT, "input ACL hits") \ -_(CHAIN_HIT, "input ACL hits after chain walk") \ -_(TABLE_MISS, "input ACL table-miss drops") \ -_(SESSION_DENY, "input ACL session deny drops") - - -typedef enum -{ -#define _(sym,str) L2_INACL_ERROR_##sym, - foreach_l2_inacl_error -#undef _ - L2_INACL_N_ERROR, -} l2_inacl_error_t; - -static char *l2_inacl_error_strings[] = { -#define _(sym,string) string, - foreach_l2_inacl_error -#undef _ -}; - -static uword -l2_inacl_node_fn (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 n_left_from, *from, *to_next; - acl_next_index_t next_index; - l2_inacl_main_t *msm = &l2_inacl_main; - input_acl_main_t *am = &input_acl_main; - vnet_classify_main_t *vcm = am->vnet_classify_main; - input_acl_table_id_t tid = INPUT_ACL_TABLE_L2; - f64 now = vlib_time_now (vm); - u32 hits = 0; - u32 misses = 0; - u32 chain_hits = 0; - - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; /* number of packets to process */ - next_index = node->cached_next_index; - - /* 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_buffer (b0)->l2_classify.opaque_index = ~0; - - /* Determine the next node */ - next0 = vnet_l2_feature_next (b0, msm->feat_next_node_index, - L2INPUT_FEAT_ACL); - - 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 < ACL_NEXT_INDEX_N_NEXT) ? - e0->next_index : next0; - - hits++; - - error0 = (next0 == ACL_NEXT_INDEX_DENY) ? - L2_INACL_ERROR_SESSION_DENY : L2_INACL_ERROR_NONE; - b0->error = node->errors[error0]; - } - 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 < - ACL_NEXT_INDEX_N_NEXT) ? t0->miss_next_index : - next0; - - misses++; - - error0 = (next0 == ACL_NEXT_INDEX_DENY) ? - L2_INACL_ERROR_TABLE_MISS : L2_INACL_ERROR_NONE; - b0->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) - { - vlib_buffer_advance (b0, e0->advance); - next0 = (e0->next_index < ACL_NEXT_INDEX_N_NEXT) ? - e0->next_index : next0; - hits++; - chain_hits++; - - error0 = (next0 == ACL_NEXT_INDEX_DENY) ? - L2_INACL_ERROR_SESSION_DENY : L2_INACL_ERROR_NONE; - b0->error = node->errors[error0]; - break; - } - } - } - } - - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) - && (b0->flags & VLIB_BUFFER_IS_TRACED))) - { - l2_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 = (t0 && e0) ? 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, - L2_INACL_ERROR_MISS, misses); - vlib_node_increment_counter (vm, node->node_index, - L2_INACL_ERROR_HIT, hits); - vlib_node_increment_counter (vm, node->node_index, - L2_INACL_ERROR_CHAIN_HIT, chain_hits); - return frame->n_vectors; -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (l2_inacl_node,static) = { - .function = l2_inacl_node_fn, - .name = "l2-input-acl", - .vector_size = sizeof (u32), - .format_trace = format_l2_inacl_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = ARRAY_LEN(l2_inacl_error_strings), - .error_strings = l2_inacl_error_strings, - - .n_next_nodes = ACL_NEXT_INDEX_N_NEXT, - - /* edit / add dispositions here */ - .next_nodes = { - [ACL_NEXT_INDEX_DENY] = "error-drop", - }, -}; -/* *INDENT-ON* */ - -VLIB_NODE_FUNCTION_MULTIARCH (l2_inacl_node, l2_inacl_node_fn) - clib_error_t *l2_inacl_init (vlib_main_t * vm) -{ - l2_inacl_main_t *mp = &l2_inacl_main; - - mp->vlib_main = vm; - mp->vnet_main = vnet_get_main (); - - /* Initialize the feature next-node indexes */ - feat_bitmap_init_next_nodes (vm, - l2_inacl_node.index, - L2INPUT_N_FEAT, - l2input_get_feat_names (), - mp->feat_next_node_index); - - return 0; -} - -VLIB_INIT_FUNCTION (l2_inacl_init); - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |