| /* | |
| * This program is free software; you can redistribute it and/or | |
| * modify it under the terms of the GNU General Public License | |
| * as published by the Free Software Foundation; either version | |
| * 2 of the License, or (at your option) any later version. | |
| */ | |
| #include <linux/module.h> | |
| #include <net/checksum.h> | |
| #include <asm/byteorder.h> | |
| /* | |
| * 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); | |
| /* These are from csum_64plus.S */ | |
| EXPORT_SYMBOL(csum_partial); | |
| EXPORT_SYMBOL(csum_partial_copy); | |
| EXPORT_SYMBOL(ip_compute_csum); | |
| EXPORT_SYMBOL(ip_fast_csum); |