MEDIUM: session: update the session's stick counters upon session_free()

Whenever session_free() is called, any possible stick counter stored in
the session will be synchronized.

include/proto/session.h

@@ -30,10 +30,37 @@
 #include <types/global.h>
 #include <types/session.h>
 
+#include <proto/stick_table.h>
+
 extern struct pool_head *pool2_session;
 void session_free(struct session *sess);
 int init_session();
 
+/* Remove the refcount from the session to the tracked counters, and clear the
+ * pointer to ensure this is only performed once. The caller is responsible for
+ * ensuring that the pointer is valid first.
+ */
+static inline void session_store_counters(struct session *sess)
+{
+	void *ptr;
+	int i;
+
+	for (i = 0; i < MAX_SESS_STKCTR; i++) {
+		struct stkctr *stkctr = &sess->stkctr[i];
+
+		if (!stkctr_entry(stkctr))
+			continue;
+
+		ptr = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_CONN_CUR);
+		if (ptr)
+			stktable_data_cast(ptr, conn_cur)--;
+		stkctr_entry(stkctr)->ref_cnt--;
+		stksess_kill_if_expired(stkctr->table, stkctr_entry(stkctr));
+		stkctr_set_entry(stkctr, NULL);
+	}
+}
+
+
 #endif /* _PROTO_SESSION_H */
 
 /*

src/session.c

@@ -18,10 +18,13 @@
 #include <types/global.h>
 #include <types/session.h>
 
+#include <proto/session.h>
+
 struct pool_head *pool2_session;
 
 void session_free(struct session *sess)
 {
+	session_store_counters(sess);
 	pool_free2(pool2_session, sess);
 }