diff options
Diffstat (limited to 'vnet/vnet/classify/ip_classify.c')
| -rw-r--r-- | vnet/vnet/classify/ip_classify.c | 365 |
1 files changed, 0 insertions, 365 deletions
diff --git a/vnet/vnet/classify/ip_classify.c b/vnet/vnet/classify/ip_classify.c deleted file mode 100644 index 44973ae5e99..00000000000 --- a/vnet/vnet/classify/ip_classify.c +++ /dev/null @@ -1,365 +0,0 @@ -/* - * 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/ethernet/ethernet.h> /* for ethernet_header_t */ -#include <vnet/classify/vnet_classify.h> -#include <vnet/dpo/classify_dpo.h> - -typedef struct { - u32 next_index; - u32 table_index; - u32 entry_index; -} ip_classify_trace_t; - -/* packet trace format function */ -static u8 * format_ip_classify_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_classify_trace_t * t = va_arg (*args, ip_classify_trace_t *); - - s = format (s, "IP_CLASSIFY: next_index %d, table %d, entry %d", - t->next_index, t->table_index, t->entry_index); - return s; -} - -vlib_node_registration_t ip4_classify_node; -vlib_node_registration_t ip6_classify_node; - -#define foreach_ip_classify_error \ -_(MISS, "Classify misses") \ -_(HIT, "Classify hits") \ -_(CHAIN_HIT, "Classify hits after chain walk") - -typedef enum { -#define _(sym,str) IP_CLASSIFY_ERROR_##sym, - foreach_ip_classify_error -#undef _ - IP_CLASSIFY_N_ERROR, -} ip_classify_error_t; - -static char * ip_classify_error_strings[] = { -#define _(sym,string) string, - foreach_ip_classify_error -#undef _ -}; - -static inline uword -ip_classify_inline (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame, int is_ip4) -{ - u32 n_left_from, * from, * to_next; - ip_lookup_next_t next_index; - vnet_classify_main_t * vcm = &vnet_classify_main; - f64 now = vlib_time_now (vm); - u32 hits = 0; - u32 misses = 0; - u32 chain_hits = 0; - u32 n_next; - - if (is_ip4) { - n_next = IP4_LOOKUP_N_NEXT; - } else { - n_next = IP6_LOOKUP_N_NEXT; - } - - 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 cd_index0, cd_index1; - classify_dpo_t *cd0, * cd1; - 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); - h0 = (void *)vlib_buffer_get_current(b0) - - ethernet_buffer_header_size(b0); - - bi1 = from[1]; - b1 = vlib_get_buffer (vm, bi1); - h1 = (void *)vlib_buffer_get_current(b1) - - ethernet_buffer_header_size(b1); - - cd_index0 = vnet_buffer (b0)->ip.adj_index[VLIB_TX]; - cd0 = classify_dpo_get(cd_index0); - table_index0 = cd0->cd_table_index; - - cd_index1 = vnet_buffer (b1)->ip.adj_index[VLIB_TX]; - cd1 = classify_dpo_get(cd_index1); - table_index1 = cd1->cd_table_index; - - t0 = pool_elt_at_index (vcm->tables, table_index0); - - t1 = pool_elt_at_index (vcm->tables, table_index1); - - vnet_buffer(b0)->l2_classify.hash = - vnet_classify_hash_packet (t0, (u8 *) h0); - - vnet_classify_prefetch_bucket (t0, vnet_buffer(b0)->l2_classify.hash); - - 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 cd_index0; - classify_dpo_t *cd0; - u32 table_index0; - vnet_classify_table_t * t0; - - bi0 = from[0]; - b0 = vlib_get_buffer (vm, bi0); - h0 = (void *)vlib_buffer_get_current(b0) - - ethernet_buffer_header_size(b0); - - cd_index0 = vnet_buffer (b0)->ip.adj_index[VLIB_TX]; - cd0 = classify_dpo_get(cd_index0); - table_index0 = cd0->cd_table_index; - - t0 = pool_elt_at_index (vcm->tables, table_index0); - 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 = IP_LOOKUP_NEXT_DROP; - u32 table_index0; - vnet_classify_table_t * t0; - vnet_classify_entry_t * e0; - u64 hash0; - u8 * h0; - - /* 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); - h0 = b0->data; - table_index0 = vnet_buffer(b0)->l2_classify.table_index; - e0 = 0; - t0 = 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); - - 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 < node->n_next_nodes)? - e0->next_index:next0; - hits++; - } - else - { - while (1) - { - if (t0->next_table_index != ~0) - t0 = pool_elt_at_index (vcm->tables, - t0->next_table_index); - else - { - next0 = (t0->miss_next_index < n_next) ? - t0->miss_next_index : next0; - misses++; - break; - } - - 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 < node->n_next_nodes)? - e0->next_index:next0; - hits++; - chain_hits++; - break; - } - } - } - } - - if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE) - && (b0->flags & VLIB_BUFFER_IS_TRACED))) - { - ip_classify_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->next_index = next0; - t->table_index = t0 ? t0 - vcm->tables : ~0; - t->entry_index = e0 ? e0 - t0->entries : ~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_CLASSIFY_ERROR_MISS, - misses); - vlib_node_increment_counter (vm, node->node_index, - IP_CLASSIFY_ERROR_HIT, - hits); - vlib_node_increment_counter (vm, node->node_index, - IP_CLASSIFY_ERROR_CHAIN_HIT, - chain_hits); - return frame->n_vectors; -} - -static uword -ip4_classify (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - return ip_classify_inline (vm, node, frame, 1 /* is_ip4 */); -} - - -VLIB_REGISTER_NODE (ip4_classify_node) = { - .function = ip4_classify, - .name = "ip4-classify", - .vector_size = sizeof (u32), - .sibling_of = "ip4-lookup", - .format_trace = format_ip_classify_trace, - .n_errors = ARRAY_LEN(ip_classify_error_strings), - .error_strings = ip_classify_error_strings, - - .n_next_nodes = 0, -}; - -VLIB_NODE_FUNCTION_MULTIARCH (ip4_classify_node, ip4_classify) - -static uword -ip6_classify (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - return ip_classify_inline (vm, node, frame, 0 /* is_ip4 */); -} - - -VLIB_REGISTER_NODE (ip6_classify_node) = { - .function = ip6_classify, - .name = "ip6-classify", - .vector_size = sizeof (u32), - .sibling_of = "ip6-lookup", - .format_trace = format_ip_classify_trace, - .n_errors = ARRAY_LEN(ip_classify_error_strings), - .error_strings = ip_classify_error_strings, - - .n_next_nodes = 0, -}; - -VLIB_NODE_FUNCTION_MULTIARCH (ip6_classify_node, ip6_classify) - -static clib_error_t * -ip_classify_init (vlib_main_t * vm) -{ - return 0; -} - -VLIB_INIT_FUNCTION (ip_classify_init); |