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pping: Add warnings for failing to create map entry

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Send a warning notifying the user that PPing failed to create a
flow/timestamp entry due to the corresponding map being full. To avoid
sending a warning for every packet, only emit warnings every
WARN_MAP_FULL_INTERVAL (which is currently hard-coded to 1s).

Signed-off-by: Simon Sundberg <simon.sundberg@kau.se>
This commit is contained in:
Simon Sundberg
2022-02-03 15:51:22 +01:00
parent 54886c92d9
commit 2647429081
3 changed files with 68 additions and 5 deletions
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12
pping/pping.c
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@@ -821,6 +821,15 @@ static void print_event_json(const union pping_event *e)
jsonw_end_object(json_ctx);
}
static void warn_map_full(const struct map_full_event *e)
{
print_ns_datetime(stderr, e->timestamp);
fprintf(stderr, " Warning: Unable to create %s entry for flow ",
e->map == PPING_MAP_FLOWSTATE ? "flow" : "timestamp");
print_flow_ppvizformat(stderr, &e->flow);
fprintf(stderr, "\n");
}
static void handle_event(void *ctx, int cpu, void *data, __u32 data_size)
{
const union pping_event *e = data;
@@ -829,6 +838,9 @@ static void handle_event(void *ctx, int cpu, void *data, __u32 data_size)
return;
switch (e->event_type) {
case EVENT_TYPE_MAP_FULL:
warn_map_full(&e->map_event);
break;
case EVENT_TYPE_RTT:
case EVENT_TYPE_FLOW:
print_event_func(e);