core: Limit maximum size of an assembled MCTP message
If libmctp receives sequence of fragment MCTP packets and never receives
EOM packet, this will cause heap memory to grow without bounds. This
commit puts an upper cap on maximum MCTP message size. This should
protect us from any malicious device trying to exploiting this.
Also, this prevents overwhelming of the device's resources.
Section 10.1.5 of DSP0236 (v1.3.1) allows configuration of
endpoints to protect its resources.
Signed-off-by: Sumanth Bhat <sumanth.bhat@linux.intel.com>
Change-Id: Id62cfab7c25b3e1ccf955f2e924844b58b4be154
diff --git a/libmctp.h b/libmctp.h
index a8beb72..00bce29 100644
--- a/libmctp.h
+++ b/libmctp.h
@@ -65,6 +65,7 @@
struct mctp_bus;
struct mctp *mctp_init(void);
+void mctp_set_max_message_size(struct mctp *mctp, size_t message_size);
void mctp_destroy(struct mctp *mctp);
/* Register a binding to the MCTP core, and creates a bus (populating