Module Name: src
Committed By: maxv
Date: Fri Apr 13 07:36:11 UTC 2018
Modified Files:
src/sys/sys: mbuf.h
Log Message:
No, fix previous.
To generate a diff of this commit:
cvs rdiff -u -r1.183 -r1.184 src/sys/sys/mbuf.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/sys/mbuf.h
diff -u src/sys/sys/mbuf.h:1.183 src/sys/sys/mbuf.h:1.184
--- src/sys/sys/mbuf.h:1.183 Fri Apr 13 07:30:46 2018
+++ src/sys/sys/mbuf.h Fri Apr 13 07:36:11 2018
@@ -1,4 +1,4 @@
-/* $NetBSD: mbuf.h,v 1.183 2018/04/13 07:30:46 maxv Exp $ */
+/* $NetBSD: mbuf.h,v 1.184 2018/04/13 07:36:11 maxv Exp $ */
/*
* Copyright (c) 1996, 1997, 1999, 2001, 2007 The NetBSD Foundation, Inc.
@@ -164,17 +164,14 @@ struct m_hdr {
* A note about csum_data:
*
* o For the out-bound direction, the low 16 bits indicates the offset after
- * the L4 header where the final L4 checksum value is to be stored
- * (checksumming flags) and the high 16 bits is the length of the L3 header
- * (the start of the data to be checksummed):
- *
- * +------------------+--------------------+
- * csum_data: | L3 header length | Checksumming flags |
- * +------------------+--------------------+
+ * the L4 header where the final L4 checksum value is to be stored and the
+ * high 16 bits is the length of the L3 header (the start of the data to
+ * be checksummed):
*
* o For the in-bound direction, it is only valid if the M_CSUM_DATA flag is
- * set. In this case, an L4 checksum has been calculated by hardware, but
- * it is up to software to perform final verification.
+ * set. In this case, an L4 checksum has been calculated by hardware and
+ * is stored in csum_data, but it is up to software to perform final
+ * verification.
*
* Note for in-bound TCP/UDP checksums: we expect the csum_data to NOT
* be bit-wise inverted (the final step in the calculation of an IP
@@ -207,7 +204,7 @@ struct pkthdr {
void *pattr_hdr; /* ALTQ: saved header position in mbuf */
};
-/* Checksumming flags. */
+/* Checksumming flags (csum_flags). */
#define M_CSUM_TCPv4 0x00000001 /* TCP header/payload */
#define M_CSUM_UDPv4 0x00000002 /* UDP header/payload */
#define M_CSUM_TCP_UDP_BAD 0x00000004 /* TCP/UDP checksum bad */
