diff options
Diffstat (limited to 'arch/powerpc/lib/checksum_32.S')
| -rw-r--r-- | arch/powerpc/lib/checksum_32.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/powerpc/lib/checksum_32.S b/arch/powerpc/lib/checksum_32.S index 422d66e938e3..aa224069f93a 100644 --- a/arch/powerpc/lib/checksum_32.S +++ b/arch/powerpc/lib/checksum_32.S @@ -302,3 +302,36 @@ dst_error: EX_TABLE(51b, dst_error); EXPORT_SYMBOL(csum_partial_copy_generic) + +/* + * __sum16 csum_ipv6_magic(const struct in6_addr *saddr, + * const struct in6_addr *daddr, + * __u32 len, __u8 proto, __wsum sum) + */ + +_GLOBAL(csum_ipv6_magic) + lwz r8, 0(r3) + lwz r9, 4(r3) + addc r0, r7, r8 + lwz r10, 8(r3) + adde r0, r0, r9 + lwz r11, 12(r3) + adde r0, r0, r10 + lwz r8, 0(r4) + adde r0, r0, r11 + lwz r9, 4(r4) + adde r0, r0, r8 + lwz r10, 8(r4) + adde r0, r0, r9 + lwz r11, 12(r4) + adde r0, r0, r10 + add r5, r5, r6 /* assumption: len + proto doesn't carry */ + adde r0, r0, r11 + adde r0, r0, r5 + addze r0, r0 + rotlwi r3, r0, 16 + add r3, r0, r3 + not r3, r3 + rlwinm r3, r3, 16, 16, 31 + blr +EXPORT_SYMBOL(csum_ipv6_magic) |