obj-y := io.o iomap_copy_64.o
obj-$(CONFIG_SMP) += msr-on-cpu.o
-lib-y := csum-partial.o csum-copy_64.o csum-wrappers.o delay.o \
+lib-y := csum-partial.o csum-copy_64.o csum-wrappers_64.o delay.o \
usercopy.o getuser.o putuser.o \
thunk_64.o clear_page_64.o copy_page_64.o bitstr_64.o bitops.o
lib-y += memcpy_64.o memmove_64.o memset.o copy_user.o rwlock_64.o copy_user_nocache_64.o
+++ /dev/null
-/* Copyright 2002,2003 Andi Kleen, SuSE Labs.
- * Subject to the GNU Public License v.2
- *
- * Wrappers of assembly checksum functions for x86-64.
- */
-
-#include <asm/checksum.h>
-#include <linux/module.h>
-
-/**
- * csum_partial_copy_from_user - Copy and checksum from user space.
- * @src: source address (user space)
- * @dst: destination address
- * @len: number of bytes to be copied.
- * @isum: initial sum that is added into the result (32bit unfolded)
- * @errp: set to -EFAULT for an bad source address.
- *
- * Returns an 32bit unfolded checksum of the buffer.
- * src and dst are best aligned to 64bits.
- */
-__wsum
-csum_partial_copy_from_user(const void __user *src, void *dst,
- int len, __wsum isum, int *errp)
-{
- might_sleep();
- *errp = 0;
- if (likely(access_ok(VERIFY_READ,src, len))) {
- /* Why 6, not 7? To handle odd addresses aligned we
- would need to do considerable complications to fix the
- checksum which is defined as an 16bit accumulator. The
- fix alignment code is primarily for performance
- compatibility with 32bit and that will handle odd
- addresses slowly too. */
- if (unlikely((unsigned long)src & 6)) {
- while (((unsigned long)src & 6) && len >= 2) {
- __u16 val16;
- *errp = __get_user(val16, (const __u16 __user *)src);
- if (*errp)
- return isum;
- *(__u16 *)dst = val16;
- isum = (__force __wsum)add32_with_carry(
- (__force unsigned)isum, val16);
- src += 2;
- dst += 2;
- len -= 2;
- }
- }
- isum = csum_partial_copy_generic((__force const void *)src,
- dst, len, isum, errp, NULL);
- if (likely(*errp == 0))
- return isum;
- }
- *errp = -EFAULT;
- memset(dst,0,len);
- return isum;
-}
-
-EXPORT_SYMBOL(csum_partial_copy_from_user);
-
-/**
- * csum_partial_copy_to_user - Copy and checksum to user space.
- * @src: source address
- * @dst: destination address (user space)
- * @len: number of bytes to be copied.
- * @isum: initial sum that is added into the result (32bit unfolded)
- * @errp: set to -EFAULT for an bad destination address.
- *
- * Returns an 32bit unfolded checksum of the buffer.
- * src and dst are best aligned to 64bits.
- */
-__wsum
-csum_partial_copy_to_user(const void *src, void __user *dst,
- int len, __wsum isum, int *errp)
-{
- might_sleep();
- if (unlikely(!access_ok(VERIFY_WRITE, dst, len))) {
- *errp = -EFAULT;
- return 0;
- }
-
- if (unlikely((unsigned long)dst & 6)) {
- while (((unsigned long)dst & 6) && len >= 2) {
- __u16 val16 = *(__u16 *)src;
- isum = (__force __wsum)add32_with_carry(
- (__force unsigned)isum, val16);
- *errp = __put_user(val16, (__u16 __user *)dst);
- if (*errp)
- return isum;
- src += 2;
- dst += 2;
- len -= 2;
- }
- }
-
- *errp = 0;
- return csum_partial_copy_generic(src, (void __force *)dst,len,isum,NULL,errp);
-}
-
-EXPORT_SYMBOL(csum_partial_copy_to_user);
-
-/**
- * csum_partial_copy_nocheck - Copy and checksum.
- * @src: source address
- * @dst: destination address
- * @len: number of bytes to be copied.
- * @isum: initial sum that is added into the result (32bit unfolded)
- *
- * Returns an 32bit unfolded checksum of the buffer.
- */
-__wsum
-csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum)
-{
- return csum_partial_copy_generic(src,dst,len,sum,NULL,NULL);
-}
-EXPORT_SYMBOL(csum_partial_copy_nocheck);
-
-__sum16 csum_ipv6_magic(const struct in6_addr *saddr,
- const struct in6_addr *daddr,
- __u32 len, unsigned short proto, __wsum sum)
-{
- __u64 rest, sum64;
-
- rest = (__force __u64)htonl(len) + (__force __u64)htons(proto) +
- (__force __u64)sum;
- asm(" addq (%[saddr]),%[sum]\n"
- " adcq 8(%[saddr]),%[sum]\n"
- " adcq (%[daddr]),%[sum]\n"
- " adcq 8(%[daddr]),%[sum]\n"
- " adcq $0,%[sum]\n"
- : [sum] "=r" (sum64)
- : "[sum]" (rest),[saddr] "r" (saddr), [daddr] "r" (daddr));
- return csum_fold((__force __wsum)add32_with_carry(sum64 & 0xffffffff, sum64>>32));
-}
-
-EXPORT_SYMBOL(csum_ipv6_magic);
--- /dev/null
+/* Copyright 2002,2003 Andi Kleen, SuSE Labs.
+ * Subject to the GNU Public License v.2
+ *
+ * Wrappers of assembly checksum functions for x86-64.
+ */
+
+#include <asm/checksum.h>
+#include <linux/module.h>
+
+/**
+ * csum_partial_copy_from_user - Copy and checksum from user space.
+ * @src: source address (user space)
+ * @dst: destination address
+ * @len: number of bytes to be copied.
+ * @isum: initial sum that is added into the result (32bit unfolded)
+ * @errp: set to -EFAULT for an bad source address.
+ *
+ * Returns an 32bit unfolded checksum of the buffer.
+ * src and dst are best aligned to 64bits.
+ */
+__wsum
+csum_partial_copy_from_user(const void __user *src, void *dst,
+ int len, __wsum isum, int *errp)
+{
+ might_sleep();
+ *errp = 0;
+ if (likely(access_ok(VERIFY_READ,src, len))) {
+ /* Why 6, not 7? To handle odd addresses aligned we
+ would need to do considerable complications to fix the
+ checksum which is defined as an 16bit accumulator. The
+ fix alignment code is primarily for performance
+ compatibility with 32bit and that will handle odd
+ addresses slowly too. */
+ if (unlikely((unsigned long)src & 6)) {
+ while (((unsigned long)src & 6) && len >= 2) {
+ __u16 val16;
+ *errp = __get_user(val16, (const __u16 __user *)src);
+ if (*errp)
+ return isum;
+ *(__u16 *)dst = val16;
+ isum = (__force __wsum)add32_with_carry(
+ (__force unsigned)isum, val16);
+ src += 2;
+ dst += 2;
+ len -= 2;
+ }
+ }
+ isum = csum_partial_copy_generic((__force const void *)src,
+ dst, len, isum, errp, NULL);
+ if (likely(*errp == 0))
+ return isum;
+ }
+ *errp = -EFAULT;
+ memset(dst,0,len);
+ return isum;
+}
+
+EXPORT_SYMBOL(csum_partial_copy_from_user);
+
+/**
+ * csum_partial_copy_to_user - Copy and checksum to user space.
+ * @src: source address
+ * @dst: destination address (user space)
+ * @len: number of bytes to be copied.
+ * @isum: initial sum that is added into the result (32bit unfolded)
+ * @errp: set to -EFAULT for an bad destination address.
+ *
+ * Returns an 32bit unfolded checksum of the buffer.
+ * src and dst are best aligned to 64bits.
+ */
+__wsum
+csum_partial_copy_to_user(const void *src, void __user *dst,
+ int len, __wsum isum, int *errp)
+{
+ might_sleep();
+ if (unlikely(!access_ok(VERIFY_WRITE, dst, len))) {
+ *errp = -EFAULT;
+ return 0;
+ }
+
+ if (unlikely((unsigned long)dst & 6)) {
+ while (((unsigned long)dst & 6) && len >= 2) {
+ __u16 val16 = *(__u16 *)src;
+ isum = (__force __wsum)add32_with_carry(
+ (__force unsigned)isum, val16);
+ *errp = __put_user(val16, (__u16 __user *)dst);
+ if (*errp)
+ return isum;
+ src += 2;
+ dst += 2;
+ len -= 2;
+ }
+ }
+
+ *errp = 0;
+ return csum_partial_copy_generic(src, (void __force *)dst,len,isum,NULL,errp);
+}
+
+EXPORT_SYMBOL(csum_partial_copy_to_user);
+
+/**
+ * csum_partial_copy_nocheck - Copy and checksum.
+ * @src: source address
+ * @dst: destination address
+ * @len: number of bytes to be copied.
+ * @isum: initial sum that is added into the result (32bit unfolded)
+ *
+ * Returns an 32bit unfolded checksum of the buffer.
+ */
+__wsum
+csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum)
+{
+ return csum_partial_copy_generic(src,dst,len,sum,NULL,NULL);
+}
+EXPORT_SYMBOL(csum_partial_copy_nocheck);
+
+__sum16 csum_ipv6_magic(const struct in6_addr *saddr,
+ const struct in6_addr *daddr,
+ __u32 len, unsigned short proto, __wsum sum)
+{
+ __u64 rest, sum64;
+
+ rest = (__force __u64)htonl(len) + (__force __u64)htons(proto) +
+ (__force __u64)sum;
+ asm(" addq (%[saddr]),%[sum]\n"
+ " adcq 8(%[saddr]),%[sum]\n"
+ " adcq (%[daddr]),%[sum]\n"
+ " adcq 8(%[daddr]),%[sum]\n"
+ " adcq $0,%[sum]\n"
+ : [sum] "=r" (sum64)
+ : "[sum]" (rest),[saddr] "r" (saddr), [daddr] "r" (daddr));
+ return csum_fold((__force __wsum)add32_with_carry(sum64 & 0xffffffff, sum64>>32));
+}
+
+EXPORT_SYMBOL(csum_ipv6_magic);
projects / GitHub / LineageOS / android_kernel_samsung_universal7580.git / commitdiff