diff options
Diffstat (limited to 'src/vnet/osi/node.c')
| -rw-r--r-- | src/vnet/osi/node.c | 335 |
1 files changed, 0 insertions, 335 deletions
diff --git a/src/vnet/osi/node.c b/src/vnet/osi/node.c deleted file mode 100644 index 9edc354cda7..00000000000 --- a/src/vnet/osi/node.c +++ /dev/null @@ -1,335 +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. - */ -/* - * osi_node.c: osi packet processing - * - * Copyright (c) 2010 Eliot Dresselhaus - * - * Permission is hereby granted, free of charge, to any person obtaining - * a copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, sublicense, and/or sell copies of the Software, and to - * permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE - * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION - * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION - * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - -#include <vlib/vlib.h> -#include <vnet/pg/pg.h> -#include <vnet/osi/osi.h> -#include <vnet/ppp/ppp.h> -#include <vnet/hdlc/hdlc.h> -#include <vnet/llc/llc.h> - -#define foreach_osi_input_next \ - _ (PUNT, "error-punt") \ - _ (DROP, "error-drop") - -typedef enum -{ -#define _(s,n) OSI_INPUT_NEXT_##s, - foreach_osi_input_next -#undef _ - OSI_INPUT_N_NEXT, -} osi_input_next_t; - -typedef struct -{ - u8 packet_data[32]; -} osi_input_trace_t; - -static u8 * -format_osi_input_trace (u8 * s, va_list * va) -{ - CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *); - CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *); - osi_input_trace_t *t = va_arg (*va, osi_input_trace_t *); - - s = format (s, "%U", format_osi_header, t->packet_data); - - return s; -} - -static uword -osi_input (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * from_frame) -{ - osi_main_t *lm = &osi_main; - u32 n_left_from, next_index, *from, *to_next; - - from = vlib_frame_vector_args (from_frame); - n_left_from = from_frame->n_vectors; - - if (node->flags & VLIB_NODE_FLAG_TRACE) - vlib_trace_frame_buffers_only (vm, node, - from, - n_left_from, - sizeof (from[0]), - sizeof (osi_input_trace_t)); - - 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 >= 4 && n_left_to_next >= 2) - { - u32 bi0, bi1; - vlib_buffer_t *b0, *b1; - osi_header_t *h0, *h1; - u8 next0, next1, enqueue_code; - - /* Prefetch next iteration. */ - { - vlib_buffer_t *b2, *b3; - - b2 = vlib_get_buffer (vm, from[2]); - b3 = vlib_get_buffer (vm, from[3]); - - vlib_prefetch_buffer_header (b2, LOAD); - vlib_prefetch_buffer_header (b3, LOAD); - - CLIB_PREFETCH (b2->data, sizeof (h0[0]), LOAD); - CLIB_PREFETCH (b3->data, sizeof (h1[0]), LOAD); - } - - bi0 = from[0]; - bi1 = from[1]; - to_next[0] = bi0; - to_next[1] = bi1; - from += 2; - to_next += 2; - n_left_to_next -= 2; - n_left_from -= 2; - - b0 = vlib_get_buffer (vm, bi0); - b1 = vlib_get_buffer (vm, bi1); - - h0 = vlib_buffer_get_current (b0); - h1 = vlib_buffer_get_current (b1); - - next0 = lm->input_next_by_protocol[h0->protocol]; - next1 = lm->input_next_by_protocol[h1->protocol]; - - b0->error = - node->errors[next0 == - OSI_INPUT_NEXT_DROP ? OSI_ERROR_UNKNOWN_PROTOCOL : - OSI_ERROR_NONE]; - b1->error = - node->errors[next1 == - OSI_INPUT_NEXT_DROP ? OSI_ERROR_UNKNOWN_PROTOCOL : - OSI_ERROR_NONE]; - - enqueue_code = (next0 != next_index) + 2 * (next1 != next_index); - - if (PREDICT_FALSE (enqueue_code != 0)) - { - switch (enqueue_code) - { - case 1: - /* A B A */ - to_next[-2] = bi1; - to_next -= 1; - n_left_to_next += 1; - vlib_set_next_frame_buffer (vm, node, next0, bi0); - break; - - case 2: - /* A A B */ - to_next -= 1; - n_left_to_next += 1; - vlib_set_next_frame_buffer (vm, node, next1, bi1); - break; - - case 3: - /* A B B or A B C */ - to_next -= 2; - n_left_to_next += 2; - vlib_set_next_frame_buffer (vm, node, next0, bi0); - vlib_set_next_frame_buffer (vm, node, next1, bi1); - if (next0 == next1) - { - vlib_put_next_frame (vm, node, next_index, - n_left_to_next); - next_index = next1; - vlib_get_next_frame (vm, node, next_index, to_next, - n_left_to_next); - } - } - } - } - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 bi0; - vlib_buffer_t *b0; - osi_header_t *h0; - u8 next0; - - 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 = vlib_buffer_get_current (b0); - - next0 = lm->input_next_by_protocol[h0->protocol]; - - b0->error = - node->errors[next0 == - OSI_INPUT_NEXT_DROP ? OSI_ERROR_UNKNOWN_PROTOCOL : - OSI_ERROR_NONE]; - - /* Sent packet to wrong next? */ - if (PREDICT_FALSE (next0 != next_index)) - { - /* Return old frame; remove incorrectly enqueued packet. */ - vlib_put_next_frame (vm, node, next_index, n_left_to_next + 1); - - /* Send to correct next. */ - next_index = next0; - vlib_get_next_frame (vm, node, next_index, to_next, - n_left_to_next); - - to_next[0] = bi0; - to_next += 1; - n_left_to_next -= 1; - } - } - - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - - return from_frame->n_vectors; -} - -static char *osi_error_strings[] = { -#define _(f,s) s, - foreach_osi_error -#undef _ -}; - -VLIB_REGISTER_NODE (osi_input_node) = { - .function = osi_input, - .name = "osi-input", - /* Takes a vector of packets. */ - .vector_size = sizeof (u32), - - .n_errors = OSI_N_ERROR, - .error_strings = osi_error_strings, - - .n_next_nodes = OSI_INPUT_N_NEXT, - .next_nodes = { -#define _(s,n) [OSI_INPUT_NEXT_##s] = n, - foreach_osi_input_next -#undef _ - }, - - .format_buffer = format_osi_header_with_length, - .format_trace = format_osi_input_trace, - .unformat_buffer = unformat_osi_header, -}; - -static void -osi_setup_node (vlib_main_t *vm, u32 node_index) -{ - vlib_node_t *n = vlib_get_node (vm, node_index); - pg_node_t *pn = pg_get_node (node_index); - - n->format_buffer = format_osi_header_with_length; - n->unformat_buffer = unformat_osi_header; - pn->unformat_edit = unformat_pg_osi_header; -} - -static clib_error_t * -osi_input_init (vlib_main_t * vm) -{ - clib_error_t *error = 0; - osi_main_t *lm = &osi_main; - - if ((error = vlib_call_init_function (vm, osi_init))) - return error; - - osi_setup_node (vm, osi_input_node.index); - - { - int i; - for (i = 0; i < ARRAY_LEN (lm->input_next_by_protocol); i++) - lm->input_next_by_protocol[i] = OSI_INPUT_NEXT_DROP; - } - - ppp_register_input_protocol (vm, PPP_PROTOCOL_osi, osi_input_node.index); - hdlc_register_input_protocol (vm, HDLC_PROTOCOL_osi, osi_input_node.index); - llc_register_input_protocol (vm, LLC_PROTOCOL_osi_layer1, - osi_input_node.index); - llc_register_input_protocol (vm, LLC_PROTOCOL_osi_layer2, - osi_input_node.index); - llc_register_input_protocol (vm, LLC_PROTOCOL_osi_layer3, - osi_input_node.index); - llc_register_input_protocol (vm, LLC_PROTOCOL_osi_layer4, - osi_input_node.index); - llc_register_input_protocol (vm, LLC_PROTOCOL_osi_layer5, - osi_input_node.index); - - return 0; -} - -VLIB_INIT_FUNCTION (osi_input_init); - -void -osi_register_input_protocol (osi_protocol_t protocol, u32 node_index) -{ - osi_main_t *lm = &osi_main; - vlib_main_t *vm = lm->vlib_main; - osi_protocol_info_t *pi; - - { - clib_error_t *error = vlib_call_init_function (vm, osi_input_init); - if (error) - clib_error_report (error); - } - - pi = osi_get_protocol_info (lm, protocol); - pi->node_index = node_index; - pi->next_index = vlib_node_add_next (vm, osi_input_node.index, node_index); - - lm->input_next_by_protocol[protocol] = pi->next_index; -} - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |