Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #ifndef _ASM_IA64_CHECKSUM_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define _ASM_IA64_CHECKSUM_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Modified 1998, 1999
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *	David Mosberger-Tang <davidm@hpl.hp.com>, Hewlett-Packard Co
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  * This is a version of ip_compute_csum() optimized for IP headers,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  * which always checksum on 4 octet boundaries.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) extern __sum16 ip_fast_csum(const void *iph, unsigned int ihl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  * Computes the checksum of the TCP/UDP pseudo-header returns a 16-bit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  * checksum, already complemented
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) extern __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 				 __u32 len, __u8 proto, __wsum sum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) extern __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 				 __u32 len, __u8 proto, __wsum sum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)  * Computes the checksum of a memory block at buff, length len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)  * and adds in "sum" (32-bit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)  * returns a 32-bit number suitable for feeding into itself
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)  * or csum_tcpudp_magic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)  * this function must be called with even lengths, except
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)  * for the last fragment, which may be odd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)  * it's best to have buff aligned on a 32-bit boundary
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) extern __wsum csum_partial(const void *buff, int len, __wsum sum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)  * This routine is used for miscellaneous IP-like checksums, mainly in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)  * icmp.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) extern __sum16 ip_compute_csum(const void *buff, int len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)  * Fold a partial checksum without adding pseudo headers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) static inline __sum16 csum_fold(__wsum csum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	u32 sum = (__force u32)csum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	sum = (sum & 0xffff) + (sum >> 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	sum = (sum & 0xffff) + (sum >> 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	return (__force __sum16)~sum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define _HAVE_ARCH_IPV6_CSUM	1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) struct in6_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) extern __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 			       const struct in6_addr *daddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 			       __u32 len, __u8 proto, __wsum csum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #endif /* _ASM_IA64_CHECKSUM_H */