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2020-12-15classify: add pcap/trace classfier mgmt API callsJon Loeliger1-0/+1
Add lookup/get/set API calls to manage both PCAP and Trace filtering Classifier tables. The "lookup" call may be used to identify a Classifier table within a chain of tables taht matches a particular mask vector. For efficiency, this call should be used to determine to which table a match vector should be added. The "get" calls return the first table within a chain (either a PCAP or the Trace) set of tables. The "set" call may be used to add a new table to one such chain. If the "sort_masks" flag is set, the tables within the chain are ordered such that the most-specific mask is first, and the least-specific mask is last. A call that "sets" a chain to ~0 will delete and free all the tables with a chain. The PCAP filters are per-interface, with "local0", (that is, sw_if_index == 0) holding the system-wide PCAP filter. The Classifier used a reference-counted "set" for each PCAP or trace filter that it stored. The ref counts were not used, and the vector of tables was only used temporarily to establish a sorted order for tables based on masks. None of that complexity was actually warranted, and where it was used, the same could be achieved more simply. Type: refactor Signed-off-by: Jon Loeliger <jdl@netgate.com> Change-Id: Icc56116cca91b91c631ca0628e814fb53f3677d2
2020-11-04vlib: add postmortem pcap dispatch traceDave Barach1-0/+1
Inspired by a real-life conundrum: scenario X involves a vpp crash in ip4-load-balance because vnet_buffer(b)->ip.adj_index[VLIB_TX] is (still) set to ~0. The problem takes most of a day to occur, and we need to see the broken packet's graph trajectory, metadata, etc. to understand the problem. Fix a signed/unsigned ASSERT bug in vlib_get_trace_count(). Rename elog_post_mortem_dump() -> vlib_post_mortem_dump(), add dispatch trace post-mortem dump. Add FILTER_FLAG_POST_MORTEM so we can (putatively) capture a ludicrous number of buffer traces, without actually using more than one dispatch cycle's worth of memory. Type: improvement Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: If093202ef071df46e290370bd9b33bf6560d30e6
2020-10-06feature: Add packet trace APIJon Loeliger1-0/+6
Also spiffed up the vpp_api_test plugin loader so it executes VLIB_INIT_FUNCTIONs and VLIB_API_INIT_FUNCTIONs. Type: feature Change-Id: Id9a4f455d73738c41bcfea220df2112bb9679681 Signed-off-by: Jon Loeliger <jdl@netgate.com> Signed-off-by: Ole Troan <ot@cisco.com> Signed-off-by: Dave Barach <dave@barachs.net>
2020-07-16misc: add tracedump API pluginDave Barach1-0/+2
Type: feature Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: I586547508003b95eaa74e18e4a5ac6f72986822c
2019-05-03Add callbacks for extended trace functionality, one as content is added with ↵Gary Boon1-0/+21
vlib_add_trace, and one to post-process the captured content immediately after trace filtering. Change-Id: Ieb521686d8c0e7ce1a0ef325f7abdde613e1eb9c Signed-off-by: Gary Boon <gboon@cisco.com>
2018-11-20Add buffer tracing to the dispatch tracerDave Barach1-0/+2
Change-Id: I56f25d653b71a25c70e6c5c1a93dd9c5158f2079 Signed-off-by: Dave Barach <dave@barachs.net>
2018-08-24Clean up packet tracer, especially "clear trace"Dave Barach1-1/+1
There are multiple trace enablement schemes. It's easy to end up in vlib_add_trace with tracing disabled insofar as the packet tracer is concerned. When that happens, return the address of a per-system dummy trace record. Change-Id: I929391b8be4ed57e26e291afdc509a15f09a3160 Signed-off-by: Dave Barach <dave@barachs.net>
2016-12-28Reorganize source tree to use single autotools instanceDamjan Marion1-0/+100
Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion <damarion@cisco.com>