---

yaml
---
r: 78485
b: refs/heads/master
c: 9ad0977
h: refs/heads/master
i:
  78483: 8d24fde
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 1bf40954cf232a043a49623cf251f787c1871e64
+refs/heads/master: 9ad0977fe10bd5d052a6db7738afe017367c2e32

trunk/include/net/sctp/checksum.h

@@ -0,0 +1,78 @@
+/* SCTP kernel reference Implementation
+ * Copyright (c) 1999-2001 Motorola, Inc.
+ * Copyright (c) 2001-2003 International Business Machines, Corp.
+ *
+ * This file is part of the SCTP kernel reference Implementation
+ *
+ * SCTP Checksum functions
+ *
+ * The SCTP reference implementation is free software;
+ * you can redistribute it and/or modify it under the terms of
+ * the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * The SCTP reference implementation is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ *                 ************************
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU CC; see the file COPYING.  If not, write to
+ * the Free Software Foundation, 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Please send any bug reports or fixes you make to the
+ * email address(es):
+ *    lksctp developers <lksctp-developers@lists.sourceforge.net>
+ *
+ * Or submit a bug report through the following website:
+ *    http://www.sf.net/projects/lksctp
+ *
+ * Written or modified by:
+ *    Dinakaran Joseph
+ *    Jon Grimm <jgrimm@us.ibm.com>
+ *    Sridhar Samudrala <sri@us.ibm.com>
+ *
+ * Rewritten to use libcrc32c by:
+ *    Vlad Yasevich <vladislav.yasevich@hp.com>
+ *
+ * Any bugs reported given to us we will try to fix... any fixes shared will
+ * be incorporated into the next SCTP release.
+ */
+
+#include <linux/types.h>
+#include <net/sctp/sctp.h>
+#include <linux/crc32c.h>
+
+static inline __u32 sctp_start_cksum(__u8 *buffer, __u16 length)
+{
+	__u32 crc = ~(__u32) 0;
+	__u8  zero[sizeof(__u32)] = {0};
+
+	/* Optimize this routine to be SCTP specific, knowing how
+	 * to skip the checksum field of the SCTP header.
+	 */
+
+	/* Calculate CRC up to the checksum. */
+	crc = crc32c(crc, buffer, sizeof(struct sctphdr) - sizeof(__u32));
+
+	/* Skip checksum field of the header. */
+	crc = crc32c(crc, zero, sizeof(__u32));
+
+	/* Calculate the rest of the CRC. */
+	crc = crc32c(crc, &buffer[sizeof(struct sctphdr)],
+			    length - sizeof(struct sctphdr));
+	return crc;
+}
+
+static inline __u32 sctp_update_cksum(__u8 *buffer, __u16 length, __u32 crc32)
+{
+	return crc32c(crc32, buffer, length);
+}
+
+static inline __u32 sctp_end_cksum(__u32 crc32)
+{
+	return ntohl(~crc32);
+}

trunk/include/net/sctp/sctp.h

@@ -149,13 +149,6 @@ int sctp_primitive_SEND(struct sctp_association *, void *arg);
 int sctp_primitive_REQUESTHEARTBEAT(struct sctp_association *, void *arg);
 int sctp_primitive_ASCONF(struct sctp_association *, void *arg);
 
-/*
- * sctp/crc32c.c
- */
-__u32 sctp_start_cksum(__u8 *ptr, __u16 count);
-__u32 sctp_update_cksum(__u8 *ptr, __u16 count, __u32 cksum);
-__u32 sctp_end_cksum(__u32 cksum);
-
 /*
  * sctp/input.c
  */

trunk/net/sctp/Kconfig

@@ -10,6 +10,7 @@ menuconfig IP_SCTP
 	select CRYPTO_HMAC
 	select CRYPTO_SHA1
 	select CRYPTO_MD5 if SCTP_HMAC_MD5
+	select LIBCRC32C
 	---help---
 	  Stream Control Transmission Protocol
 

trunk/net/sctp/Makefile

@@ -9,7 +9,7 @@ sctp-y := sm_statetable.o sm_statefuns.o sm_sideeffect.o \
 	  transport.o chunk.o sm_make_chunk.o ulpevent.o \
 	  inqueue.o outqueue.o ulpqueue.o command.o \
 	  tsnmap.o bind_addr.o socket.o primitive.o \
-	  output.o input.o debug.o ssnmap.o proc.o crc32c.o \
+	  output.o input.o debug.o ssnmap.o proc.o \
 	  auth.o
 
 sctp-$(CONFIG_SCTP_DBG_OBJCNT) += objcnt.o

trunk/net/sctp/input.c

@@ -60,6 +60,7 @@
 #include <net/xfrm.h>
 #include <net/sctp/sctp.h>
 #include <net/sctp/sm.h>
+#include <net/sctp/checksum.h>
 
 /* Forward declarations for internal helpers. */
 static int sctp_rcv_ootb(struct sk_buff *);

trunk/net/sctp/output.c

@@ -60,6 +60,7 @@
 
 #include <net/sctp/sctp.h>
 #include <net/sctp/sm.h>
+#include <net/sctp/checksum.h>
 
 /* Forward declarations for private helpers. */
 static sctp_xmit_t sctp_packet_append_data(struct sctp_packet *packet,