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-rw-r--r--net/core/iovec.c55
1 files changed, 0 insertions, 55 deletions
diff --git a/net/core/iovec.c b/net/core/iovec.c
index b61869429f4c..827dd6beb49c 100644
--- a/net/core/iovec.c
+++ b/net/core/iovec.c
@@ -75,61 +75,6 @@ int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr_storage *a
75} 75}
76 76
77/* 77/*
78 * Copy kernel to iovec. Returns -EFAULT on error.
79 */
80
81int memcpy_toiovecend(const struct iovec *iov, unsigned char *kdata,
82 int offset, int len)
83{
84 int copy;
85 for (; len > 0; ++iov) {
86 /* Skip over the finished iovecs */
87 if (unlikely(offset >= iov->iov_len)) {
88 offset -= iov->iov_len;
89 continue;
90 }
91 copy = min_t(unsigned int, iov->iov_len - offset, len);
92 if (copy_to_user(iov->iov_base + offset, kdata, copy))
93 return -EFAULT;
94 offset = 0;
95 kdata += copy;
96 len -= copy;
97 }
98
99 return 0;
100}
101EXPORT_SYMBOL(memcpy_toiovecend);
102
103/*
104 * Copy iovec to kernel. Returns -EFAULT on error.
105 */
106
107int memcpy_fromiovecend(unsigned char *kdata, const struct iovec *iov,
108 int offset, int len)
109{
110 /* Skip over the finished iovecs */
111 while (offset >= iov->iov_len) {
112 offset -= iov->iov_len;
113 iov++;
114 }
115
116 while (len > 0) {
117 u8 __user *base = iov->iov_base + offset;
118 int copy = min_t(unsigned int, len, iov->iov_len - offset);
119
120 offset = 0;
121 if (copy_from_user(kdata, base, copy))
122 return -EFAULT;
123 len -= copy;
124 kdata += copy;
125 iov++;
126 }
127
128 return 0;
129}
130EXPORT_SYMBOL(memcpy_fromiovecend);
131
132/*
133 * And now for the all-in-one: copy and checksum from a user iovec 78 * And now for the all-in-one: copy and checksum from a user iovec
134 * directly to a datagram 79 * directly to a datagram
135 * Calls to csum_partial but the last must be in 32 bit chunks 80 * Calls to csum_partial but the last must be in 32 bit chunks