FIB Interpose Source - vpp - Vector Packet Processing

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author	Neale Ranns <nranns@cisco.com>	2018-02-21 04:57:17 -0800
committer	Neale Ranns <nranns@cisco.com>	2018-03-20 23:59:06 +0000
commit	2303cb181b51f63c909cd506125c1f832432865a (patch)
tree	ea2389593abc50790e06b6ac2e80f2a38c536942 /src/vnet/ip/ip_api.c
parent	f55957e71c58e38770b12af0720e9d19a8f6a8d6 (diff)

FIB Interpose Source

The interpose source allows the source/provider to insert/interpose a DPO in the forwarding chain of the FIB entry ahead of the forwarding provided by the next best source. For example if the API source (i.e the 'control plane') has provided an adjacency for forwarding, then an interpose source (e.g. a monitoring service) couold interpose a replicatte DPO to copy the traffic to another location AND forward using the API's adjacency. To use the interose feature an existing source (i.e FIB_SOURCE_PLUGIN_HI) cn specifiy as a flag FIB_ENTRY_FLAG_INTERPOSE and provide a DPO to interpose. One might also consider using interpose in conjunction with FIB_ENTRY_FLAG_COVER_INHERIT to ensure the interpose object affects all prefixes in the sub-tree. Change-Id: I8b2737b985f8f7c08123406d0491881def347b52 Signed-off-by: Neale Ranns <nranns@cisco.com>

Diffstat (limited to 'src/vnet/ip/ip_api.c')

0 files changed, 0 insertions, 0 deletions

#!/usr/bin/env python # Copyright (c) 2016 Comcast Cable Communications Management, LLC. # # 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. # Filter for .c files to make various preprocessor tricks Doxygenish import os, sys, re if len(sys.argv) < 2: sys.stderr.write("Usage: %s <filename>\n" % (sys.argv[0])) sys.exit(1) replace_patterns = [ # Search for VLIB_CLI_COMMAND, extract its parameters and add a docblock for it ( re.compile("(?P<m>VLIB_CLI_COMMAND)\s*[(](?P<name>[a-zA-Z0-9_]+)[)]"), r"/** @brief (@em constructor) \g<m> (\g<name>) */ vlib_cli_command_t \g<name>"), ( re.compile("(?P<m>VLIB_CLI_COMMAND)\s*[(](?P<name>[a-zA-Z0-9_]+),\s*(?P<qual>[^)]*)[)]"), r"/** @brief (@em constructor) \g<m> (\g<name>) */ \g<qual> vlib_cli_command_t \g<name>"), # Search for VLIB_REGISTER_NODE, extract its parameters and add a docblock for it ( re.compile("(?P<m>VLIB_REGISTER_NODE)\s*[(](?P<name>[a-zA-Z0-9_]+)[)]"), r"/** @brief (@em constructor) \g<m> (\g<name>) */ vlib_node_registration_t \g<name>"), ( re.compile("(?P<m>VLIB_REGISTER_NODE)\s*[(](?P<name>[a-zA-Z0-9_]+),\s*(?P<qual>[^)]*)[)]"), r"/** @brief (@em constructor) \g<m> (\g<name>) */ \g<qual> vlib_node_registration_t \g<name>"), # Search for VLIB_INIT_FUNCTION, extract its parameter and add a docblock for it ( re.compile("(?P<m>VLIB_INIT_FUNCTION)\s*[(](?P<name>[a-zA-Z0-9_]+)[)]"), r"/** @brief (@em constructor) \g<m> (@ref \g<name>) */ vlib_init_function_t * _vlib_init_function_\g<name>"), ( re.compile("(?P<m>VLIB_DECLARE_INIT_FUNCTION)\s*[(](?P<name>[a-zA-Z0-9_]+)[)]"), r"/** @brief (@em constructor) \g<m> (@ref \g<name>) */ vlib_init_function_t * _vlib_init_function_\g<name>"), # Search for VLIB_LOOP_ENTER_FUNCTION, extract the parameters and add a docblock for it ( re.compile("(?P<m>VLIB_MAIN_LOOP_ENTER_FUNCTION)\s*[(](?P<name>[a-zA-Z0-9_]+)(,[^)]*)?[)]"), r"/** @brief (@em constructor) \g<m> (@ref \g<name>) */ _vlib_main_loop_enter_\g<name>"), ( re.compile("(?P<m>VLIB_MAIN_LOOP_EXIT_FUNCTION)\s*[(](?P<name>[a-zA-Z0-9_]+)(,[^)]*)?[)]"), r"/** @brief (@em constructor) \g<m> (@ref \g<name>) */ _vlib_main_loop_exit_\g<name>"), # Search for VLIB_CONFIG_FUNCTION, extract the parameters and add a docblock for it ( re.compile("(?P<m>VLIB_CONFIG_FUNCTION)\s*[(](?P<name>[a-zA-Z0-9_]+),\s*(?P<n>\"[^\"]+\")(,[^)]*)?[)]"), r"/** @brief (@em constructor) \g<m> (\g<name>, \g<n>) */ vlib_config_function_runtime_t _vlib_config_function_\g<name>"), ( re.compile("(?P<m>VLIB_EARLY_CONFIG_FUNCTION)\s*[(](?P<name>[a-zA-Z0-9_]+),\s*(?P<n>\"[^\"]+\")(,[^)]*)?[)]"), r"/** @brief (@em constructor) \g<m> (\g<name>, \g<n>) */ vlib_config_function_runtime_t _vlib_config_function_\g<name>"), # Search for "format_thing" and "unformat_thing" when used as a function pointer and add parens ( re.compile("(?P<pre>(^|,)\s*)(?P<name>(un)?format_[a-zA-Z0-9_]+)(?P<post>\s*(,|$))"), r"\g<pre>\g<name>()\g<post>" ), # Search for CLIB_PAD_FROM_TO(...); and replace with padding # #define CLIB_PAD_FROM_TO(from,to) u8 pad_##from[(to) - (from)] ( re.compile("(?P<m>CLIB_PAD_FROM_TO)\s*[(](?P<from>[^,]+),\s*(?P<to>[^)]+)[)]"), r"/** Padding. */ u8 pad_\g<from>[(\g<to>) - (\g<from>)]" ), ] filename = sys.argv[1] cwd = os.getcwd() if filename[0:len(cwd)] == cwd: filename = filename[len(cwd):] if filename[0] == "/": filename = filename[1:] with open(filename) as fd: line_num = 0 for line in fd: line_num += 1 str = line[:-1] # filter \n # Look for search/replace patterns for p in replace_patterns: str = p[0].sub(p[1], str) sys.stdout.write(str+"\n") # All done


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