8d0f2f0031
Change-Id: I105375c653b1a1dce8f0f71005b281ff137c6f42 Signed-off-by: Dave Barach <dave@barachs.net>
146 lines
4.7 KiB
EmacsLisp
146 lines
4.7 KiB
EmacsLisp
;;; Copyright (c) 2016 Cisco and/or its affiliates.
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;;; Licensed under the Apache License, Version 2.0 (the "License");
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;;; you may not use this file except in compliance with the License.
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;;; You may obtain a copy of the License at:
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;;;
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;;; http://www.apache.org/licenses/LICENSE-2.0
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;;;
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;;; Unless required by applicable law or agreed to in writing, software
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;;; distributed under the License is distributed on an "AS IS" BASIS,
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;;; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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;;; See the License for the specific language governing permissions and
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;;; limitations under the License.
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;;; pipe-skel.el - pipelined graph node skeleton
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(require 'skeleton)
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(define-skeleton skel-pipeline-node
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"Insert a skeleton pipelined graph node"
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nil
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'(setq node-name (skeleton-read "Node Name: "))
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'(setq uc-node-name (upcase node-name))
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'(setq nstages (skeleton-read "Number of pipeline stages: "))
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"
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#include <vlib/vlib.h>
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#include <vppinfra/error.h>
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/*
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* Dump these counters via the \"show error\" CLI command
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* FIXME: Add packet counter / error strings as desired
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*/
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#define foreach_" node-name "_error \\
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_(ERROR1, \"sample counter/ error string\")
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static char * " node-name "_error_strings[] = {
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#define _(sym,string) string,
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foreach_" node-name "_error
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#undef _
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};
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/*
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* packet error / counter enumeration
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*
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* To count and drop a vlib_buffer_t *b:
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*
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* Set b->error = node->errors[" uc-node-name "_ERROR_xxx];
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* last_stage returns a disposition index bound to \"error-drop\"
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*
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* To manually increment the specific counter " uc-node-name "_ERROR1
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*
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* vlib_node_t *n = vlib_get_node (vm, " node-name ".index);
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* u32 node_counter_base_index = n->error_heap_index;
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* vlib_error_main_t * em = &vm->error_main;
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* em->counters[node_counter_base_index + " uc-node-name "_ERROR1] += 1;
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*
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*/
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typedef enum {
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#define _(sym,str) " uc-node-name "_ERROR_##sym,
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foreach_" node-name "_error
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#undef _
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" uc-node-name "_N_ERROR,
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} " node-name "_error_t;
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/*
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* enumeration of per-packet dispositions
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* FIXME: add dispositions as desired
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*/
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typedef enum { \n"
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" " uc-node-name "_NEXT_NORMAL,\n"
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" " uc-node-name "_N_NEXT,
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} " node-name "_next_t;
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#define NSTAGES " nstages "
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/*
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* Use the generic buffer metadata + first line of packet data prefetch
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* stage function from <api/pipeline.h>. This is usually a Good Idea.
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*/
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#define stage0 generic_stage0
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/*
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* FIXME: add stage functions. Here is the function prototype:
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*
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* static inline void stageN (vlib_main_t * vm,
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* vlib_node_runtime_t * node,
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* u32 buffer_index)
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*/
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/*
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* FIXME: the last pipeline stage returns the desired pkt next node index,
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* from the " node-name "_next_t enum above
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*/
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static inline u32 last_stage (vlib_main_t *vm, vlib_node_runtime_t *node,
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u32 bi)
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{
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vlib_buffer_t *b = vlib_get_buffer (vm, bi);
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b->error = node->errors[EXAMPLE_ERROR_ERROR1];
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return " uc-node-name "_NEXT_NORMAL;
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}
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#include <api/pipeline.h>
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static uword " node-name "_node_fn (vlib_main_t * vm,
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vlib_node_runtime_t * node,
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vlib_frame_t * frame)
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{
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return dispatch_pipeline (vm, node, frame);
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}
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static VLIB_REGISTER_NODE (example_node) = {
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.function = " node-name "_node_fn,
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.name = \"" node-name "-node\",
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.vector_size = sizeof (u32),
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.type = VLIB_NODE_TYPE_INTERNAL,
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.n_errors = ARRAY_LEN(" node-name "_error_strings),
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.error_strings = " node-name "_error_strings,
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.n_next_nodes = " uc-node-name "_N_NEXT,
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/* edit / add dispositions here */
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.next_nodes = {
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[" uc-node-name "_NEXT_NORMAL] = \"error-drop\",
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},
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};
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/*
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* packet generator definition to push superframes of data into the
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* new graph node. Cut and paste into <file>, then
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* \"exec <file>\", \"pa enable test\" at the QVNET prompt...
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*
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packet-generator new {
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name test
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limit 100
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node " node-name "-node
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size 374-374
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data { hex 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 }
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}
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*/
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")
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