libpayload: Switch to commonlib ipchksum() algorithm

This patch moves libpayload over to the commonlib implementation for
calculating the IP checksum.

Change-Id: Ie8d323ce9f8d946758619761b4b22d54bce222b6
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80253
Reviewed-by: Jakub Czapiga <czapiga@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Yidi Lin <yidilin@google.com>

5 files changed, 4 insertions, 94 deletions

diff --git a/payloads/libpayload/include/coreboot_tables.h b/payloads/libpayload/include/coreboot_tables.h
index 5c3f0c47ec30..5b19ca842235 100644
--- a/payloads/libpayload/include/coreboot_tables.h
+++ b/payloads/libpayload/include/coreboot_tables.h
@@ -30,7 +30,7 @@
 #define _COREBOOT_TABLES_H
 
 #include <arch/types.h>
-#include <ipchksum.h>
+#include <commonlib/bsd/ipchksum.h>
 #include <stdint.h>
 
 enum {
diff --git a/payloads/libpayload/include/ipchksum.h b/payloads/libpayload/include/ipchksum.h
deleted file mode 100644
index 391fefbf2a92..000000000000
--- a/payloads/libpayload/include/ipchksum.h
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- *
- * Copyright (c) 2012 The ChromiumOS Authors.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef __IPCHKSUM_H__
-#define __IPCHKSUM_H__
-
-/**
- * @defgroup ipchecksum IP checksum functions
- * @{
- */
-unsigned short ipchksum(const void *ptr, unsigned long nbytes);
-/** @} */
-
-#endif
diff --git a/payloads/libpayload/include/libpayload.h b/payloads/libpayload/include/libpayload.h
index 06c6de429e1a..6da456473449 100644
--- a/payloads/libpayload/include/libpayload.h
+++ b/payloads/libpayload/include/libpayload.h
@@ -48,12 +48,12 @@
 #include <commonlib/bsd/elog.h>
 #include <commonlib/bsd/fmap_serialized.h>
 #include <commonlib/bsd/helpers.h>
+#include <commonlib/bsd/ipchksum.h>
 #include <commonlib/bsd/mem_chip_info.h>
 #include <ctype.h>
 #include <die.h>
 #include <endian.h>
 #include <fmap.h>
-#include <ipchksum.h>
 #include <kconfig.h>
 #include <stddef.h>
 #include <stdio.h>
diff --git a/payloads/libpayload/libc/Makefile.mk b/payloads/libpayload/libc/Makefile.mk
index 2d277da3b5b0..306bebfd9797 100644
--- a/payloads/libpayload/libc/Makefile.mk
+++ b/payloads/libpayload/libc/Makefile.mk
@@ -28,7 +28,7 @@
 ##
 
 libc-$(CONFIG_LP_LIBC) += malloc.c printf.c console.c string.c
-libc-$(CONFIG_LP_LIBC) += memory.c ctype.c ipchecksum.c lib.c libgcc.c
+libc-$(CONFIG_LP_LIBC) += memory.c ctype.c lib.c libgcc.c
 libc-$(CONFIG_LP_LIBC) += rand.c time.c exec.c
 libc-$(CONFIG_LP_LIBC) += readline.c getopt_long.c sysinfo.c
 libc-$(CONFIG_LP_LIBC) += args.c
@@ -47,4 +47,5 @@ endif
 ifeq ($(CONFIG_LP_LIBC),y)
 libc-srcs += $(coreboottop)/src/commonlib/bsd/elog.c
 libc-srcs += $(coreboottop)/src/commonlib/bsd/gcd.c
+libc-srcs += $(coreboottop)/src/commonlib/bsd/ipchksum.c
 endif
diff --git a/payloads/libpayload/libc/ipchecksum.c b/payloads/libpayload/libc/ipchecksum.c
deleted file mode 100644
index 118a6946e059..000000000000
--- a/payloads/libpayload/libc/ipchecksum.c
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- *
- * It has originally been taken from the FreeBSD project.
- *
- * Copyright (c) 2001 Charles Mott <cm@linktel.net>
- * Copyright (c) 2008 coresystems GmbH
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <libpayload.h>
-
-unsigned short ipchksum(const void *vptr, unsigned long nbytes)
-{
-	int sum, oddbyte;
-	const unsigned short *ptr = vptr;
-
-	sum = 0;
-	while (nbytes > 1) {
-		sum += *ptr++;
-		nbytes -= 2;
-	}
-	if (nbytes == 1) {
-		oddbyte = 0;
-		((u8 *) & oddbyte)[0] = *(u8 *) ptr;
-		((u8 *) & oddbyte)[1] = 0;
-		sum += oddbyte;
-	}
-	sum = (sum >> 16) + (sum & 0xffff);
-	sum += (sum >> 16);
-	return (~sum);
-}