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-rw-r--r--include/asm-sh/checksum.h69
1 files changed, 34 insertions, 35 deletions
diff --git a/include/asm-sh/checksum.h b/include/asm-sh/checksum.h
index d44344c88e73..4bc8357e8892 100644
--- a/include/asm-sh/checksum.h
+++ b/include/asm-sh/checksum.h
@@ -34,25 +34,26 @@ asmlinkage __wsum csum_partial(const void *buff, int len, __wsum sum);
34 */ 34 */
35 35
36asmlinkage __wsum csum_partial_copy_generic(const void *src, void *dst, 36asmlinkage __wsum csum_partial_copy_generic(const void *src, void *dst,
37 int len, __wsum sum, int *src_err_ptr, int *dst_err_ptr); 37 int len, __wsum sum,
38 int *src_err_ptr, int *dst_err_ptr);
38 39
39/* 40/*
40 * Note: when you get a NULL pointer exception here this means someone 41 * Note: when you get a NULL pointer exception here this means someone
41 * passed in an incorrect kernel address to one of these functions. 42 * passed in an incorrect kernel address to one of these functions.
42 * 43 *
43 * If you use these functions directly please don't forget the 44 * If you use these functions directly please don't forget the
44 * access_ok(). 45 * access_ok().
45 */ 46 */
46static __inline__ 47static inline
47__wsum csum_partial_copy_nocheck(const void *src, void *dst, 48__wsum csum_partial_copy_nocheck(const void *src, void *dst,
48 int len, __wsum sum) 49 int len, __wsum sum)
49{ 50{
50 return csum_partial_copy_generic ( src, dst, len, sum, NULL, NULL); 51 return csum_partial_copy_generic(src, dst, len, sum, NULL, NULL);
51} 52}
52 53
53static __inline__ 54static inline
54__wsum csum_partial_copy_from_user(const void __user *src, void *dst, 55__wsum csum_partial_copy_from_user(const void __user *src, void *dst,
55 int len, __wsum sum, int *err_ptr) 56 int len, __wsum sum, int *err_ptr)
56{ 57{
57 return csum_partial_copy_generic((__force const void *)src, dst, 58 return csum_partial_copy_generic((__force const void *)src, dst,
58 len, sum, err_ptr, NULL); 59 len, sum, err_ptr, NULL);
@@ -62,7 +63,7 @@ __wsum csum_partial_copy_from_user(const void __user *src, void *dst,
62 * Fold a partial checksum 63 * Fold a partial checksum
63 */ 64 */
64 65
65static __inline__ __sum16 csum_fold(__wsum sum) 66static inline __sum16 csum_fold(__wsum sum)
66{ 67{
67 unsigned int __dummy; 68 unsigned int __dummy;
68 __asm__("swap.w %0, %1\n\t" 69 __asm__("swap.w %0, %1\n\t"
@@ -85,7 +86,7 @@ static __inline__ __sum16 csum_fold(__wsum sum)
85 * i386 version by Jorge Cwik <jorge@laser.satlink.net>, adapted 86 * i386 version by Jorge Cwik <jorge@laser.satlink.net>, adapted
86 * for linux by * Arnt Gulbrandsen. 87 * for linux by * Arnt Gulbrandsen.
87 */ 88 */
88static __inline__ __sum16 ip_fast_csum(const void *iph, unsigned int ihl) 89static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
89{ 90{
90 unsigned int sum, __dummy0, __dummy1; 91 unsigned int sum, __dummy0, __dummy1;
91 92
@@ -113,10 +114,10 @@ static __inline__ __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
113 return csum_fold(sum); 114 return csum_fold(sum);
114} 115}
115 116
116static __inline__ __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr, 117static inline __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
117 unsigned short len, 118 unsigned short len,
118 unsigned short proto, 119 unsigned short proto,
119 __wsum sum) 120 __wsum sum)
120{ 121{
121#ifdef __LITTLE_ENDIAN__ 122#ifdef __LITTLE_ENDIAN__
122 unsigned long len_proto = (proto + len) << 8; 123 unsigned long len_proto = (proto + len) << 8;
@@ -132,6 +133,7 @@ static __inline__ __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
132 : "=r" (sum), "=r" (len_proto) 133 : "=r" (sum), "=r" (len_proto)
133 : "r" (daddr), "r" (saddr), "1" (len_proto), "0" (sum) 134 : "r" (daddr), "r" (saddr), "1" (len_proto), "0" (sum)
134 : "t"); 135 : "t");
136
135 return sum; 137 return sum;
136} 138}
137 139
@@ -139,30 +141,28 @@ static __inline__ __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
139 * computes the checksum of the TCP/UDP pseudo-header 141 * computes the checksum of the TCP/UDP pseudo-header
140 * returns a 16-bit checksum, already complemented 142 * returns a 16-bit checksum, already complemented
141 */ 143 */
142static __inline__ __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr, 144static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr,
143 unsigned short len, 145 unsigned short len,
144 unsigned short proto, 146 unsigned short proto,
145 __wsum sum) 147 __wsum sum)
146{ 148{
147 return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum)); 149 return csum_fold(csum_tcpudp_nofold(saddr, daddr, len, proto, sum));
148} 150}
149 151
150/* 152/*
151 * this routine is used for miscellaneous IP-like checksums, mainly 153 * this routine is used for miscellaneous IP-like checksums, mainly
152 * in icmp.c 154 * in icmp.c
153 */ 155 */
154 156static inline __sum16 ip_compute_csum(const void *buff, int len)
155static __inline__ __sum16 ip_compute_csum(const void *buff, int len)
156{ 157{
157 return csum_fold (csum_partial(buff, len, 0)); 158 return csum_fold(csum_partial(buff, len, 0));
158} 159}
159 160
160#define _HAVE_ARCH_IPV6_CSUM 161#define _HAVE_ARCH_IPV6_CSUM
161#ifdef CONFIG_IPV6 162static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
162static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr, 163 const struct in6_addr *daddr,
163 const struct in6_addr *daddr, 164 __u32 len, unsigned short proto,
164 __u32 len, unsigned short proto, 165 __wsum sum)
165 __wsum sum)
166{ 166{
167 unsigned int __dummy; 167 unsigned int __dummy;
168 __asm__("clrt\n\t" 168 __asm__("clrt\n\t"
@@ -187,22 +187,21 @@ static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
187 "movt %1\n\t" 187 "movt %1\n\t"
188 "add %1, %0\n" 188 "add %1, %0\n"
189 : "=r" (sum), "=&r" (__dummy) 189 : "=r" (sum), "=&r" (__dummy)
190 : "r" (saddr), "r" (daddr), 190 : "r" (saddr), "r" (daddr),
191 "r" (htonl(len)), "r" (htonl(proto)), "0" (sum) 191 "r" (htonl(len)), "r" (htonl(proto)), "0" (sum)
192 : "t"); 192 : "t");
193 193
194 return csum_fold(sum); 194 return csum_fold(sum);
195} 195}
196#endif
197 196
198/* 197/*
199 * Copy and checksum to user 198 * Copy and checksum to user
200 */ 199 */
201#define HAVE_CSUM_COPY_USER 200#define HAVE_CSUM_COPY_USER
202static __inline__ __wsum csum_and_copy_to_user (const void *src, 201static inline __wsum csum_and_copy_to_user(const void *src,
203 void __user *dst, 202 void __user *dst,
204 int len, __wsum sum, 203 int len, __wsum sum,
205 int *err_ptr) 204 int *err_ptr)
206{ 205{
207 if (access_ok(VERIFY_WRITE, dst, len)) 206 if (access_ok(VERIFY_WRITE, dst, len))
208 return csum_partial_copy_generic((__force const void *)src, 207 return csum_partial_copy_generic((__force const void *)src,