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authorAl Viro <viro@zeniv.linux.org.uk>2020-07-23 05:14:36 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2020-08-20 22:45:14 +0300
commit6e41c585e38ff696de3a11509a0ad0a11150b0c3 (patch)
tree6af77b846b7523063a645913fa6a2c6563beb238 /arch/c6x
parent3ea7ca80d9c0ff606b5a129dce2354f771a9e4e8 (diff)
downloadlinux-6e41c585e38ff696de3a11509a0ad0a11150b0c3.tar.xz
unify generic instances of csum_partial_copy_nocheck()
quite a few architectures have the same csum_partial_copy_nocheck() - simply memcpy() the data and then return the csum of the copy. hexagon, parisc, ia64, s390, um: explicitly spelled out that way. arc, arm64, csky, h8300, m68k/nommu, microblaze, mips/GENERIC_CSUM, nds32, nios2, openrisc, riscv, unicore32: end up picking the same thing spelled out in lib/checksum.h (with varying amounts of perversions along the way). everybody else (alpha, arm, c6x, m68k/mmu, mips/!GENERIC_CSUM, powerpc, sh, sparc, x86, xtensa) have non-generic variants. For all except c6x the declaration is in their asm/checksum.h. c6x uses the wrapper from asm-generic/checksum.h that would normally lead to the lib/checksum.h instance, but in case of c6x we end up using an asm function from arch/c6x instead. Screw that mess - have architectures with private instances define _HAVE_ARCH_CSUM_AND_COPY in their asm/checksum.h and have the default one right in net/checksum.h conditional on _HAVE_ARCH_CSUM_AND_COPY *not* defined. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/c6x')
-rw-r--r--arch/c6x/include/asm/checksum.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/c6x/include/asm/checksum.h b/arch/c6x/include/asm/checksum.h
index 36770b8308d9..fa31bdc186b2 100644
--- a/arch/c6x/include/asm/checksum.h
+++ b/arch/c6x/include/asm/checksum.h
@@ -26,6 +26,9 @@ csum_tcpudp_nofold(__be32 saddr, __be32 daddr, __u32 len,
}
#define csum_tcpudp_nofold csum_tcpudp_nofold
+#define _HAVE_ARCH_CSUM_AND_COPY
+extern __wsum csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum);
+
#include <asm-generic/checksum.h>
#endif /* _ASM_C6X_CHECKSUM_H */