1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * RPL implementation 4 * 5 * Author: 6 * (C) 2020 Alexander Aring <alex.aring@gmail.com> 7 */ 8 9 #ifndef _NET_RPL_H 10 #define _NET_RPL_H 11 12 #include <linux/rpl.h> 13 14 /* Worst decompression memory usage ipv6 address (16) + pad 7 */ 15 #define IPV6_RPL_SRH_WORST_SWAP_SIZE (sizeof(struct in6_addr) + 7) 16 17 static inline size_t ipv6_rpl_srh_alloc_size(unsigned char n) 18 { 19 return sizeof(struct ipv6_rpl_sr_hdr) + 20 ((n + 1) * sizeof(struct in6_addr)); 21 } 22 23 size_t ipv6_rpl_srh_size(unsigned char n, unsigned char cmpri, 24 unsigned char cmpre); 25 26 void ipv6_rpl_srh_decompress(struct ipv6_rpl_sr_hdr *outhdr, 27 const struct ipv6_rpl_sr_hdr *inhdr, 28 const struct in6_addr *daddr, unsigned char n); 29 30 void ipv6_rpl_srh_compress(struct ipv6_rpl_sr_hdr *outhdr, 31 const struct ipv6_rpl_sr_hdr *inhdr, 32 const struct in6_addr *daddr, unsigned char n); 33 34 #endif /* _NET_RPL_H */ 35