/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Copyright (c) 2015 Tom Herbert <tom@herbertland.com> */ #ifndef __ILA_H #define __ILA_H #include <linux/errno.h> #include <linux/ip.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/socket.h> #include <linux/skbuff.h> #include <linux/types.h> #include <net/checksum.h> #include <net/genetlink.h> #include <net/ip.h> #include <net/protocol.h> #include <uapi/linux/ila.h> struct ila_locator { union { __u8 v8[8]; __be16 v16[4]; __be32 v32[2]; __be64 v64; }; }; struct ila_identifier { union { struct { #if defined(__LITTLE_ENDIAN_BITFIELD) u8 __space:4; u8 csum_neutral:1; u8 type:3; #elif defined(__BIG_ENDIAN_BITFIELD) u8 type:3; u8 csum_neutral:1; u8 __space:4; #else #error "Adjust your <asm/byteorder.h> defines" #endif u8 __space2[7]; }; __u8 v8[8]; __be16 v16[4]; __be32 v32[2]; __be64 v64; }; }; #define CSUM_NEUTRAL_FLAG htonl(0x10000000) struct ila_addr { union { struct in6_addr addr; struct { struct ila_locator loc; struct ila_identifier ident; }; }; }; static inline struct ila_addr *ila_a2i(struct in6_addr *addr) { return (struct ila_addr *)addr; } struct ila_params { struct ila_locator locator; struct ila_locator locator_match; __wsum csum_diff; u8 csum_mode; u8 ident_type; }; static inline __wsum compute_csum_diff8(const __be32 *from, const __be32 *to) { __be32 diff[] = { ~from[0], ~from[1], to[0], to[1], }; return csum_partial(diff, sizeof(diff), 0); } static inline bool ila_csum_neutral_set(struct ila_identifier ident) { return !!(ident.csum_neutral); } void ila_update_ipv6_locator(struct sk_buff *skb, struct ila_params *p, bool set_csum_neutral); void ila_init_saved_csum(struct ila_params *p); struct ila_net { struct { struct rhashtable rhash_table; spinlock_t *locks; /* Bucket locks for entry manipulation */ unsigned int locks_mask; bool hooks_registered; } xlat; }; int ila_lwt_init(void); void ila_lwt_fini(void); int ila_xlat_init_net(struct net *net); void ila_xlat_exit_net(struct net *net); int ila_xlat_nl_cmd_add_mapping(struct sk_buff *skb, struct genl_info *info); int ila_xlat_nl_cmd_del_mapping(struct sk_buff *skb, struct genl_info *info); int ila_xlat_nl_cmd_get_mapping(struct sk_buff *skb, struct genl_info *info); int ila_xlat_nl_cmd_flush(struct sk_buff *skb, struct genl_info *info); int ila_xlat_nl_dump_start(struct netlink_callback *cb); int ila_xlat_nl_dump_done(struct netlink_callback *cb); int ila_xlat_nl_dump(struct sk_buff *skb, struct netlink_callback *cb); extern unsigned int ila_net_id; extern struct genl_family ila_nl_family; #endif /* __ILA_H */