[MAJOR] session: add track-counters to track counters related to the session
This patch adds the ability to set a pointer in the session to an
entry in a stick table which holds various counters related to a
specific pattern.
Right now the syntax matches the target syntax and only the "src"
pattern can be specified, to track counters related to the session's
IPv4 source address. There is a special function to extract it and
convert it to a key. But the goal is to be able to later support as
many patterns as for the stick rules, and get rid of the specific
function.
The "track-counters" directive may only be set in a "tcp-request"
statement right now. Only the first one applies. Probably that later
we'll support multi-criteria tracking for a single session and that
we'll have to name tracking pointers.
No counter is updated right now, only the refcount is. Some subsequent
patches will have to bring that feature.
diff --git a/include/proto/stick_table.h b/include/proto/stick_table.h
index db45760..813b3b9 100644
--- a/include/proto/stick_table.h
+++ b/include/proto/stick_table.h
@@ -36,6 +36,7 @@
int stktable_init(struct stktable *t);
int stktable_parse_type(char **args, int *idx, unsigned long *type, size_t *key_size);
+struct stksess *stktable_get_entry(struct stktable *table, struct stktable_key *key);
struct stksess *stktable_store(struct stktable *t, struct stksess *ts);
struct stksess *stktable_touch(struct stktable *t, struct stksess *ts);
struct stksess *stktable_lookup(struct stktable *t, struct stksess *ts);