X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/3e170ce000f1506b7b5d2c5c7faec85ceabb573d..a39ff7e25e19b3a8c3020042a3872ca9ec9659f1:/bsd/netinet/in_proto.c?ds=sidebyside

diff --git a/bsd/netinet/in_proto.c b/bsd/netinet/in_proto.c
index bb0fee864..4a9d19819 100644
--- a/bsd/netinet/in_proto.c
+++ b/bsd/netinet/in_proto.c
@@ -73,6 +73,7 @@
 
 #include <net/if.h>
 #include <net/route.h>
+#include <net/kpi_protocol.h>
 
 #include <netinet/in.h>
 #include <netinet/in_var.h>
@@ -302,6 +303,13 @@ in_dinit(struct domain *dp)
 
 	inetdomain = dp;
 
+	/*
+	 * Verify that the maximum possible tcp/ip header will still
+	 * fit in a small mbuf because m_pullup only puls into 256
+	 * byte mbuf
+	 */
+	_CASSERT((sizeof(struct tcpiphdr) + TCP_MAXOLEN) <= _MHLEN);
+
 	/*
 	 * Attach first, then initialize; ip_init() needs raw IP handler.
 	 */