diff options
author | Vineet Gupta <vgupta@synopsys.com> | 2013-01-18 04:42:16 -0500 |
---|---|---|
committer | Vineet Gupta <vgupta@synopsys.com> | 2013-02-11 09:30:33 -0500 |
commit | 64e69073c35439fa19c2ad2a4a18834e0314f071 (patch) | |
tree | 121d6e719dcf81090ad26778c5d7c89cd43e33e9 /include/asm-generic | |
parent | 0a5eae458e923af9968679fd75fd1f7670200bc3 (diff) |
asm-generic headers: Allow yet more arch overrides in checksum.h
arches can have more efficient implementation of these routines
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'include/asm-generic')
-rw-r--r-- | include/asm-generic/checksum.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/asm-generic/checksum.h b/include/asm-generic/checksum.h index c084767c88bc..59811df58c5b 100644 --- a/include/asm-generic/checksum.h +++ b/include/asm-generic/checksum.h | |||
@@ -38,12 +38,15 @@ extern __wsum csum_partial_copy_from_user(const void __user *src, void *dst, | |||
38 | csum_partial_copy((src), (dst), (len), (sum)) | 38 | csum_partial_copy((src), (dst), (len), (sum)) |
39 | #endif | 39 | #endif |
40 | 40 | ||
41 | #ifndef ip_fast_csum | ||
41 | /* | 42 | /* |
42 | * This is a version of ip_compute_csum() optimized for IP headers, | 43 | * This is a version of ip_compute_csum() optimized for IP headers, |
43 | * which always checksum on 4 octet boundaries. | 44 | * which always checksum on 4 octet boundaries. |
44 | */ | 45 | */ |
45 | extern __sum16 ip_fast_csum(const void *iph, unsigned int ihl); | 46 | extern __sum16 ip_fast_csum(const void *iph, unsigned int ihl); |
47 | #endif | ||
46 | 48 | ||
49 | #ifndef csum_fold | ||
47 | /* | 50 | /* |
48 | * Fold a partial checksum | 51 | * Fold a partial checksum |
49 | */ | 52 | */ |
@@ -54,6 +57,7 @@ static inline __sum16 csum_fold(__wsum csum) | |||
54 | sum = (sum & 0xffff) + (sum >> 16); | 57 | sum = (sum & 0xffff) + (sum >> 16); |
55 | return (__force __sum16)~sum; | 58 | return (__force __sum16)~sum; |
56 | } | 59 | } |
60 | #endif | ||
57 | 61 | ||
58 | #ifndef csum_tcpudp_nofold | 62 | #ifndef csum_tcpudp_nofold |
59 | /* | 63 | /* |