linux-kernel - [PATCH v2 08/18] alpha: pull asm-generic/checksum.h

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Message-Id: <20231205022418.1703007-15-viro@zeniv.linux.org.uk>
Date:   Tue,  5 Dec 2023 02:24:06 +0000
From:   Al Viro <viro@...iv.linux.org.uk>
To:     linux-arch@...r.kernel.org
Cc:     gus Gusenleitner Klaus <gus@...a.com>,
        Al Viro <viro@....linux.org.uk>,
        Thomas Gleixner <tglx@...utronix.de>,
        lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...hat.com>, "bp@...en8.de" <bp@...en8.de>,
        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
        "x86@...nel.org" <x86@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        "dsahern@...nel.org" <dsahern@...nel.org>,
        "kuba@...nel.org" <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH v2 08/18] alpha: pull asm-generic/checksum.h

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 arch/alpha/include/asm/checksum.h | 51 +++----------------------------
 1 file changed, 5 insertions(+), 46 deletions(-)

diff --git a/arch/alpha/include/asm/checksum.h b/arch/alpha/include/asm/checksum.h
index 0d7c21a79961..54722eaeb999 100644
--- a/arch/alpha/include/asm/checksum.h
+++ b/arch/alpha/include/asm/checksum.h
@@ -2,40 +2,7 @@
 #ifndef _ALPHA_CHECKSUM_H
 #define _ALPHA_CHECKSUM_H
 
-#include <linux/in6.h>
-
-/*
- *	This is a version of ip_compute_csum() optimized for IP headers,
- *	which always checksum on 4 octet boundaries.
- */
-extern __sum16 ip_fast_csum(const void *iph, unsigned int ihl);
-
 #define _HAVE_ARCH_CSUM_TCPUDP_MAGIC
-
-__wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
-			  __u32 len, __u8 proto, __wsum sum);
-
-/*
- * computes the checksum of a memory block at buff, length len,
- * and adds in "sum" (32-bit)
- *
- * returns a 32-bit number suitable for feeding into itself
- * or csum_tcpudp_magic
- *
- * this function must be called with even lengths, except
- * for the last fragment, which may be odd
- *
- * it's best to have buff aligned on a 32-bit boundary
- */
-extern __wsum csum_partial(const void *buff, int len, __wsum sum);
-
-/*
- * the same as csum_partial, but copies from src while it
- * checksums
- *
- * here even more important to align src and dst on a 32-bit (or even
- * better 64-bit) boundary
- */
 #define _HAVE_ARCH_COPY_AND_CSUM_FROM_USER
 #define _HAVE_ARCH_CSUM_AND_COPY
 __wsum_fault csum_and_copy_from_user(const void __user *src, void *dst, int len);
@@ -43,21 +10,13 @@ __wsum_fault csum_and_copy_from_user(const void __user *src, void *dst, int len)
 __wsum csum_partial_copy_nocheck(const void *src, void *dst, int len);
 
 #define _HAVE_IP_COMPUTE_CSUM
-
-/*
- *	Fold a partial checksum without adding pseudo headers
- */
-
-static inline __sum16 csum_fold(__wsum csum)
-{
-	u32 sum = (__force u32)csum;
-	sum = (sum & 0xffff) + (sum >> 16);
-	sum = (sum & 0xffff) + (sum >> 16);
-	return (__force __sum16)~sum;
-}
-
 #define _HAVE_ARCH_IPV6_CSUM
+
+struct in6_addr;
 extern __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
 			       const struct in6_addr *daddr,
 			       __u32 len, __u8 proto, __wsum sum);
+
+#include <asm-generic/checksum.h>
+
 #endif
-- 
2.39.2