commit 51b2b17ecbffa67058edefe4ed64838e2def1e76
from: Omar Polo <op@omarpolo.com>
date: Wed Jul 28 12:33:56 2021 UTC

define a handy HEADERSIZE

sizeof(struct np_msg_header) includes unwanted padding...

commit - da5146e1913c1049ee1eec057e15b9d5390e5d78
commit + 51b2b17ecbffa67058edefe4ed64838e2def1e76
blob - ce40cf7d1a49c9dacc2e79ab2e9e254927a60293
blob + d3f48e0a614adf3af6892a9c645461742091dfed
--- kamid.h
+++ kamid.h
@@ -141,6 +141,7 @@ struct np_msg_header {
 };
 
 /* useful constants */
+#define HEADERSIZE	(4 + 1 + 2)
 #define	VERSION9P	"9P2000"
 #define MSIZE9P		((uint32_t)256)
 #define NOTAG		((uint16_t)~0U)