forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
1.7 KiB
63 lines
1.7 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
#ifndef _ASM_IA64_CHECKSUM_H |
|
#define _ASM_IA64_CHECKSUM_H |
|
|
|
/* |
|
* Modified 1998, 1999 |
|
* David Mosberger-Tang <[email protected]>, Hewlett-Packard Co |
|
*/ |
|
|
|
/* |
|
* This is a version of ip_compute_csum() optimized for IP headers, |
|
* which always checksum on 4 octet boundaries. |
|
*/ |
|
extern __sum16 ip_fast_csum(const void *iph, unsigned int ihl); |
|
|
|
/* |
|
* Computes the checksum of the TCP/UDP pseudo-header returns a 16-bit |
|
* checksum, already complemented |
|
*/ |
|
extern __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr, |
|
__u32 len, __u8 proto, __wsum sum); |
|
|
|
extern __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr, |
|
__u32 len, __u8 proto, __wsum sum); |
|
|
|
/* |
|
* Computes the checksum of a memory block at buff, length len, |
|
* and adds in "sum" (32-bit) |
|
* |
|
* returns a 32-bit number suitable for feeding into itself |
|
* or csum_tcpudp_magic |
|
* |
|
* this function must be called with even lengths, except |
|
* for the last fragment, which may be odd |
|
* |
|
* it's best to have buff aligned on a 32-bit boundary |
|
*/ |
|
extern __wsum csum_partial(const void *buff, int len, __wsum sum); |
|
|
|
/* |
|
* This routine is used for miscellaneous IP-like checksums, mainly in |
|
* icmp.c |
|
*/ |
|
extern __sum16 ip_compute_csum(const void *buff, int len); |
|
|
|
/* |
|
* Fold a partial checksum without adding pseudo headers. |
|
*/ |
|
static inline __sum16 csum_fold(__wsum csum) |
|
{ |
|
u32 sum = (__force u32)csum; |
|
sum = (sum & 0xffff) + (sum >> 16); |
|
sum = (sum & 0xffff) + (sum >> 16); |
|
return (__force __sum16)~sum; |
|
} |
|
|
|
#define _HAVE_ARCH_IPV6_CSUM 1 |
|
struct in6_addr; |
|
extern __sum16 csum_ipv6_magic(const struct in6_addr *saddr, |
|
const struct in6_addr *daddr, |
|
__u32 len, __u8 proto, __wsum csum); |
|
|
|
#endif /* _ASM_IA64_CHECKSUM_H */
|
|
|