cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

ila.h (2762B)

      1/* SPDX-License-Identifier: GPL-2.0-or-later */
      2/*
      3 * Copyright (c) 2015 Tom Herbert <tom@herbertland.com>
      4 */
      5
      6#ifndef __ILA_H
      7#define __ILA_H
      8
      9#include <linux/errno.h>
     10#include <linux/ip.h>
     11#include <linux/kernel.h>
     12#include <linux/module.h>
     13#include <linux/socket.h>
     14#include <linux/skbuff.h>
     15#include <linux/types.h>
     16#include <net/checksum.h>
     17#include <net/genetlink.h>
     18#include <net/ip.h>
     19#include <net/protocol.h>
     20#include <uapi/linux/ila.h>
     21
     22struct ila_locator {
     23	union {
     24		__u8            v8[8];
     25		__be16          v16[4];
     26		__be32          v32[2];
     27		__be64		v64;
     28	};
     29};
     30
     31struct ila_identifier {
     32	union {
     33		struct {
     34#if defined(__LITTLE_ENDIAN_BITFIELD)
     35			u8 __space:4;
     36			u8 csum_neutral:1;
     37			u8 type:3;
     38#elif defined(__BIG_ENDIAN_BITFIELD)
     39			u8 type:3;
     40			u8 csum_neutral:1;
     41			u8 __space:4;
     42#else
     43#error  "Adjust your <asm/byteorder.h> defines"
     44#endif
     45			u8 __space2[7];
     46		};
     47		__u8            v8[8];
     48		__be16          v16[4];
     49		__be32          v32[2];
     50		__be64		v64;
     51	};
     52};
     53
     54#define CSUM_NEUTRAL_FLAG	htonl(0x10000000)
     55
     56struct ila_addr {
     57	union {
     58		struct in6_addr addr;
     59		struct {
     60			struct ila_locator loc;
     61			struct ila_identifier ident;
     62		};
     63	};
     64};
     65
     66static inline struct ila_addr *ila_a2i(struct in6_addr *addr)
     67{
     68	return (struct ila_addr *)addr;
     69}
     70
     71struct ila_params {
     72	struct ila_locator locator;
     73	struct ila_locator locator_match;
     74	__wsum csum_diff;
     75	u8 csum_mode;
     76	u8 ident_type;
     77};
     78
     79static inline __wsum compute_csum_diff8(const __be32 *from, const __be32 *to)
     80{
     81	__be32 diff[] = {
     82		~from[0], ~from[1], to[0], to[1],
     83	};
     84
     85	return csum_partial(diff, sizeof(diff), 0);
     86}
     87
     88static inline bool ila_csum_neutral_set(struct ila_identifier ident)
     89{
     90	return !!(ident.csum_neutral);
     91}
     92
     93void ila_update_ipv6_locator(struct sk_buff *skb, struct ila_params *p,
     94			     bool set_csum_neutral);
     95
     96void ila_init_saved_csum(struct ila_params *p);
     97
     98struct ila_net {
     99	struct {
    100		struct rhashtable rhash_table;
    101		spinlock_t *locks; /* Bucket locks for entry manipulation */
    102		unsigned int locks_mask;
    103		bool hooks_registered;
    104	} xlat;
    105};
    106
    107int ila_lwt_init(void);
    108void ila_lwt_fini(void);
    109
    110int ila_xlat_init_net(struct net *net);
    111void ila_xlat_exit_net(struct net *net);
    112
    113int ila_xlat_nl_cmd_add_mapping(struct sk_buff *skb, struct genl_info *info);
    114int ila_xlat_nl_cmd_del_mapping(struct sk_buff *skb, struct genl_info *info);
    115int ila_xlat_nl_cmd_get_mapping(struct sk_buff *skb, struct genl_info *info);
    116int ila_xlat_nl_cmd_flush(struct sk_buff *skb, struct genl_info *info);
    117int ila_xlat_nl_dump_start(struct netlink_callback *cb);
    118int ila_xlat_nl_dump_done(struct netlink_callback *cb);
    119int ila_xlat_nl_dump(struct sk_buff *skb, struct netlink_callback *cb);
    120
    121extern unsigned int ila_net_id;
    122
    123extern struct genl_family ila_nl_family;
    124
    125#endif /* __ILA_H */