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| author | Al Viro <viro@zeniv.linux.org.uk> | 2020-02-18 14:26:32 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2020-05-29 16:11:50 -0400 |
| commit | 5904122c46581a5ccee54a51ef07e0d891fd7aef (patch) | |
| tree | 433bbafc1e3a3cdbfd291d51cfd858186683dff2 /lib/checksum.c | |
| parent | 24f9aa928c3cc88bae573b39b6976844968f80a0 (diff) | |
| download | linux-5904122c46581a5ccee54a51ef07e0d891fd7aef.tar.gz linux-5904122c46581a5ccee54a51ef07e0d891fd7aef.tar.bz2 linux-5904122c46581a5ccee54a51ef07e0d891fd7aef.zip | |
take the dummy csum_and_copy_from_user() into net/checksum.h
now that can be done conveniently - all non-trivial cases have
_HAVE_ARCH_COPY_AND_CSUM_FROM_USER defined, so the fallback in
net/checksum.h is used only for dummy (copy_from_user, then
csum_partial) implementation. Allowing us to get rid of all
dummy instances, both of csum_and_copy_from_user() and
csum_partial_copy_from_user().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'lib/checksum.c')
| -rw-r--r-- | lib/checksum.c | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/lib/checksum.c b/lib/checksum.c index de032ad96f4a..7ac65a0000ff 100644 --- a/lib/checksum.c +++ b/lib/checksum.c @@ -146,26 +146,6 @@ __sum16 ip_compute_csum(const void *buff, int len) EXPORT_SYMBOL(ip_compute_csum); /* - * copy from fs while checksumming, otherwise like csum_partial - */ -__wsum -csum_partial_copy_from_user(const void __user *src, void *dst, int len, - __wsum sum, int *csum_err) -{ - int missing; - - missing = __copy_from_user(dst, src, len); - if (missing) { - memset(dst + len - missing, 0, missing); - *csum_err = -EFAULT; - } else - *csum_err = 0; - - return csum_partial(dst, len, sum); -} -EXPORT_SYMBOL(csum_partial_copy_from_user); - -/* * copy from ds while checksumming, otherwise like csum_partial */ __wsum |