diff options
Diffstat (limited to 'hicn-plugin/src/faces/app/face_prod_node.c')
| -rw-r--r-- | hicn-plugin/src/faces/app/face_prod_node.c | 314 |
1 files changed, 314 insertions, 0 deletions
diff --git a/hicn-plugin/src/faces/app/face_prod_node.c b/hicn-plugin/src/faces/app/face_prod_node.c new file mode 100644 index 000000000..80c3e124c --- /dev/null +++ b/hicn-plugin/src/faces/app/face_prod_node.c @@ -0,0 +1,314 @@ +/* + * Copyright (c) 2017-2020 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. + */ + +/** + * @file + * + * @brief Application interface node + * + * This node runs after the device-input node and perfoms some safety checks in + * order to avoid unespected interest and data (i.e., hICN packets whose name do + * not contain the prefix associated to the application face) + */ + +#include "face_prod.h" +#include "../../hicn_api.h" +#include "../../mgmt.h" + +static __clib_unused char *face_prod_input_error_strings[] = { +#define _(sym, string) string, + foreach_hicnfwd_error +#undef _ +}; + +/* Node context data */ +typedef struct hicn_face_prod_runtime_s +{ + int id; +} hicn_face_prod_runtime_t; + +typedef struct +{ + u32 next_index; + u32 sw_if_index; +} hicn_face_prod_input_trace_t; + +typedef enum +{ + HICN_FACE_PROD_NEXT_DATA_IP4, + HICN_FACE_PROD_NEXT_DATA_IP6, + HICN_FACE_PROD_NEXT_ERROR_DROP, + HICN_FACE_PROD_N_NEXT, +} hicn_face_prod_next_t; + +vlib_node_registration_t hicn_face_prod_input_node; + +static __clib_unused u8 * +format_face_prod_input_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 *); + hicn_face_prod_input_trace_t *t = + va_arg (*args, hicn_face_prod_input_trace_t *); + CLIB_UNUSED (u32 indent) = format_get_indent (s); + + s = format (s, "prod-face: sw_if_index %d next-index %d", + t->sw_if_index, t->next_index); + return s; +} + +static_always_inline int +match_ip4_name (u32 * name, fib_prefix_t * prefix) +{ + u32 xor = 0; + + xor = *name & prefix->fp_addr.ip4.data_u32; + + return xor == prefix->fp_addr.ip4.data_u32; +} + +static_always_inline int +match_ip6_name (u8 * name, fib_prefix_t * prefix) +{ + union + { + u32x4 as_u32x4; + u64 as_u64[2]; + u32 as_u32[4]; + } xor_sum __attribute__ ((aligned (sizeof (u32x4)))); + + xor_sum.as_u64[0] = ((u64 *) name)[0] & prefix->fp_addr.ip6.as_u64[0]; + xor_sum.as_u64[1] = ((u64 *) name)[1] & prefix->fp_addr.ip6.as_u64[1]; + + return (xor_sum.as_u64[0] == prefix->fp_addr.ip6.as_u64[0]) && + (xor_sum.as_u64[1] == prefix->fp_addr.ip6.as_u64[1]); +} + +static_always_inline u32 +hicn_face_prod_next_from_data_hdr (vlib_node_runtime_t * node, + vlib_buffer_t * b, fib_prefix_t * prefix) +{ + u8 *ptr = vlib_buffer_get_current (b); + u8 v = *ptr & 0xf0; + int match_res = 1; + + if (PREDICT_TRUE (v == 0x40 && ip46_address_is_ip4 (&prefix->fp_addr))) + { + match_res = match_ip4_name ((u32 *) & (ptr[12]), prefix); + } + else if (PREDICT_TRUE (v == 0x60 && !ip46_address_is_ip4 (&prefix->fp_addr))) + { + match_res = match_ip6_name (& (ptr[8]), prefix); + } + + return match_res ? HICN_FACE_PROD_NEXT_DATA_IP4 + (v == + 0x60) : + HICN_FACE_PROD_NEXT_ERROR_DROP; +} + +static_always_inline void +hicn_face_prod_trace_buffer (vlib_main_t * vm, vlib_node_runtime_t * node, + u32 swif, vlib_buffer_t * b, u32 next) +{ + if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && + (b->flags & VLIB_BUFFER_IS_TRACED))) + { + hicn_face_prod_input_trace_t *t = + vlib_add_trace (vm, node, b, sizeof (*t)); + t->next_index = next; + t->sw_if_index = swif; + } +} + +static uword +hicn_face_prod_input_node_fn (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + u32 n_left_from, *from, *to_next; + hicn_face_prod_next_t next_index; + vl_api_hicn_api_node_stats_get_reply_t stats = { 0 }; + + from = vlib_frame_vector_args (frame); + n_left_from = frame->n_vectors; + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + while (n_left_from >= 8 && n_left_to_next >= 4) + { + vlib_buffer_t *b0, *b1, *b2, *b3; + u32 bi0, bi1, bi2, bi3; + hicn_face_prod_state_t *prod_face0 = NULL; + hicn_face_prod_state_t *prod_face1 = NULL; + hicn_face_prod_state_t *prod_face2 = NULL; + hicn_face_prod_state_t *prod_face3 = NULL; + u32 next0, next1, next2, next3; + + { + vlib_buffer_t *b4, *b5, *b6, *b7; + b4 = vlib_get_buffer (vm, from[4]); + b5 = vlib_get_buffer (vm, from[5]); + b6 = vlib_get_buffer (vm, from[6]); + b7 = vlib_get_buffer (vm, from[7]); + CLIB_PREFETCH (b4, CLIB_CACHE_LINE_BYTES, STORE); + CLIB_PREFETCH (b5, CLIB_CACHE_LINE_BYTES, STORE); + CLIB_PREFETCH (b6, CLIB_CACHE_LINE_BYTES, STORE); + CLIB_PREFETCH (b7, CLIB_CACHE_LINE_BYTES, STORE); + } + + bi0 = from[0]; + bi1 = from[1]; + bi2 = from[2]; + bi3 = from[3]; + + from += 4; + n_left_from -= 4; + to_next[0] = bi0; + to_next[1] = bi1; + to_next[2] = bi2; + to_next[3] = bi3; + + to_next += 4; + n_left_to_next -= 4; + + b0 = vlib_get_buffer (vm, bi0); + b1 = vlib_get_buffer (vm, bi1); + b2 = vlib_get_buffer (vm, bi2); + b3 = vlib_get_buffer (vm, bi3); + + prod_face0 = + &face_state_vec[vnet_buffer (b0)->sw_if_index[VLIB_RX]]; + prod_face1 = + &face_state_vec[vnet_buffer (b1)->sw_if_index[VLIB_RX]]; + prod_face2 = + &face_state_vec[vnet_buffer (b2)->sw_if_index[VLIB_RX]]; + prod_face3 = + &face_state_vec[vnet_buffer (b3)->sw_if_index[VLIB_RX]]; + + next0 = + hicn_face_prod_next_from_data_hdr (node, b0, &prod_face0->prefix); + next1 = + hicn_face_prod_next_from_data_hdr (node, b1, &prod_face1->prefix); + next2 = + hicn_face_prod_next_from_data_hdr (node, b2, &prod_face2->prefix); + next3 = + hicn_face_prod_next_from_data_hdr (node, b3, &prod_face3->prefix); + stats.pkts_data_count += 4; + + /* trace */ + hicn_face_prod_trace_buffer (vm, node, + vnet_buffer (b0)->sw_if_index[VLIB_RX], + b0, next0); + hicn_face_prod_trace_buffer (vm, node, + vnet_buffer (b1)->sw_if_index[VLIB_RX], + b1, next1); + hicn_face_prod_trace_buffer (vm, node, + vnet_buffer (b2)->sw_if_index[VLIB_RX], + b2, next2); + hicn_face_prod_trace_buffer (vm, node, + vnet_buffer (b3)->sw_if_index[VLIB_RX], + b3, next3); + + /* enqueue */ + vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next, + n_left_to_next, bi0, bi1, bi2, bi3, + next0, next1, next2, next3); + + stats.pkts_processed += 4; + + } + + while (n_left_from > 0 && n_left_to_next > 0) + { + vlib_buffer_t *b0; + u32 bi0, swif; + hicn_face_prod_state_t *prod_face = NULL; + u32 next0; + + if (n_left_from > 1) + { + vlib_buffer_t *b1; + b1 = vlib_get_buffer (vm, from[1]); + CLIB_PREFETCH (b1, CLIB_CACHE_LINE_BYTES, STORE); + } + + bi0 = from[0]; + from += 1; + n_left_from -= 1; + to_next[0] = bi0; + to_next += 1; + n_left_to_next -= 1; + + b0 = vlib_get_buffer (vm, bi0); + swif = vnet_buffer (b0)->sw_if_index[VLIB_RX]; + prod_face = &face_state_vec[swif]; + + next0 = + hicn_face_prod_next_from_data_hdr (node, b0, &prod_face->prefix); + stats.pkts_data_count++; + + /* trace */ + hicn_face_prod_trace_buffer (vm, node, + vnet_buffer (b0)->sw_if_index[VLIB_RX], + b0, next0); + + /* enqueue */ + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, + n_left_to_next, bi0, next0); + + stats.pkts_processed += 1; + + } + + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + + vlib_node_increment_counter (vm, node->node_index, + HICNFWD_ERROR_PROCESSED, stats.pkts_processed); + vlib_node_increment_counter (vm, node->node_index, HICNFWD_ERROR_DATAS, + stats.pkts_data_count); + + return (frame->n_vectors); +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE(hicn_face_prod_input_node) = +{ + .function = hicn_face_prod_input_node_fn, + .name = "hicn-face-prod-input", + .vector_size = sizeof(u32), + .format_trace = format_face_prod_input_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = ARRAY_LEN(face_prod_input_error_strings), + .error_strings = face_prod_input_error_strings, + .n_next_nodes = HICN_FACE_PROD_N_NEXT, + .next_nodes = + { + [HICN_FACE_PROD_NEXT_DATA_IP4] = "hicn4-face-input", + [HICN_FACE_PROD_NEXT_DATA_IP6] = "hicn6-face-input", + [HICN_FACE_PROD_NEXT_ERROR_DROP] = "error-drop", + }, +}; +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: eval: (c-set-style "gnu") End: + */ |