diff options
| author |   Bud Grise <griseb@cisco.com> | 2016-02-02 14:23:29 -0500 |
|---|---|---|
| committer |   Gerrit Code Review <gerrit@fd.io> | 2016-02-02 21:33:08 +0000 |
| commit | 0bcc9d511e52a9832e723825b4c84d9332d7025b (patch) | |
| tree | f170cc10b06fd13aadb72974a7606376c0774560 /vlib/vlib/trace_funcs.h | |
| parent | cfe0724b22672369d7d26108eef89362b7006a0c (diff) | |
Tracing enhancements.
Limit buffer tracing to 50 in order to limit large output, unless
the user over rides the max "sh trace max <number>".
Add trace filtering, to be able to only trace packets that were
processed by a specific node or exclude packets processed by a node.
Example, only include packets processed by error-drop:
# trace filter include error-drop 1
# trace add dpdk-input 1000000
<wait for packets, to come in>
# show trace
Change-Id: I5d9e15d2268ea55e6ef87b2b8756049c49b2791b
Signed-off-by: Todd Foggoa <tfoggoa@cisco.com>
Diffstat (limited to 'vlib/vlib/trace_funcs.h')
| -rw-r--r-- | vlib/vlib/trace_funcs.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/vlib/vlib/trace_funcs.h b/vlib/vlib/trace_funcs.h index 3dc7471e152..1da46b41964 100644 --- a/vlib/vlib/trace_funcs.h +++ b/vlib/vlib/trace_funcs.h @@ -99,6 +99,8 @@ vlib_trace_next_frame (vlib_main_t * vm, nf->flags |= VLIB_FRAME_TRACE; } +void trace_apply_filter (vlib_main_t * vm); + /* Mark buffer as traced and allocate trace buffer. */ always_inline void vlib_trace_buffer (vlib_main_t * vm, @@ -110,6 +112,16 @@ vlib_trace_buffer (vlib_main_t * vm, vlib_trace_main_t * tm = &vm->trace_main; vlib_trace_header_t ** h; + /* + * Apply filter to existing traces to keep number of allocated traces low. + * Performed each time around the main loop. + */ + if (tm->last_main_loop_count != vm->main_loop_count) + { + tm->last_main_loop_count = vm->main_loop_count; + trace_apply_filter (vm); + } + vlib_trace_next_frame (vm, r, next_index); pool_get (tm->trace_buffer_pool, h); |