diff options
| author |   Dave Barach <dave@barachs.net> | 2020-11-03 09:59:06 -0500 |
|---|---|---|
| committer |   Florin Coras <florin.coras@gmail.com> | 2020-11-04 17:39:10 +0000 |
| commit | 27d978c9136e903244113a7ab57acea4b496898e (patch) | |
| tree | 1520252a663db663b0634633149e5f83a9c23f53 /src/vlib/trace.h | |
| parent | a210433d534fe0039ddc2a9aa9840895aef0405d (diff) | |
vlib: add postmortem pcap dispatch trace
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
Diffstat (limited to 'src/vlib/trace.h')
| -rw-r--r-- | src/vlib/trace.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/vlib/trace.h b/src/vlib/trace.h index 54b7c294569..ae9bd6913d3 100644 --- a/src/vlib/trace.h +++ b/src/vlib/trace.h @@ -91,6 +91,7 @@ typedef struct #define FILTER_FLAG_NONE 0 #define FILTER_FLAG_INCLUDE 1 #define FILTER_FLAG_EXCLUDE 2 +#define FILTER_FLAG_POST_MORTEM 3 u32 filter_count; /* set on trace add, cleared on clear trace */ |