diff options
Diffstat (limited to 'src/compat/compat.h')
| -rw-r--r-- | src/compat/compat.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/compat/compat.h b/src/compat/compat.h index c182234..58d16b1 100644 --- a/src/compat/compat.h +++ b/src/compat/compat.h @@ -698,6 +698,34 @@ static inline void cpu_to_le32_array(u32 *buf, unsigned int words) } #endif +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 14, 0) +#include <crypto/algapi.h> +static inline void crypto_xor_cpy(u8 *dst, const u8 *src1, const u8 *src2, + unsigned int size) +{ + if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && + __builtin_constant_p(size) && + (size % sizeof(unsigned long)) == 0) { + unsigned long *d = (unsigned long *)dst; + unsigned long *s1 = (unsigned long *)src1; + unsigned long *s2 = (unsigned long *)src2; + + while (size > 0) { + *d++ = *s1++ ^ *s2++; + size -= sizeof(unsigned long); + } + } else { + if (unlikely(dst != src1)) + memmove(dst, src1, size); +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 11, 0) + crypto_xor(dst, src2, size); +#else + __crypto_xor(dst, src2, size); +#endif + } +} +#endif + /* https://lkml.kernel.org/r/20170624021727.17835-1-Jason@zx2c4.com */ #if IS_ENABLED(CONFIG_NF_CONNTRACK) #include <linux/ip.h> |