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arm64: csum: Optimise IPv6 header checksum
authorRobin Murphy <robin.murphy@arm.com>
Mon, 20 Jan 2020 18:52:29 +0000 (18:52 +0000)
committerCatalin Marinas <catalin.marinas@arm.com>
Mon, 9 Mar 2020 18:08:25 +0000 (18:08 +0000)
commitc53d9f590ffe9d095258c93720f3617419af2abf
treeaa52e43a553143c92273950d372f427607c06c2ctree | snapshot
parentfb0d2d688f0715dbcd4204be5e4fe0df53184171commit | diff
arm64: csum: Optimise IPv6 header checksum

Throwing our __uint128_t idioms at csum_ipv6_magic() makes it
about 1.3x-2x faster across a range of microarchitecture/compiler
combinations. Not much in absolute terms, but every little helps.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
arch/arm64/include/asm/checksum.h diff | blob | history
arch/arm64/lib/csum.c diff | blob | history
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