cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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icmpv6.h (2966B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _LINUX_ICMPV6_H
      3#define _LINUX_ICMPV6_H
      4
      5#include <linux/skbuff.h>
      6#include <linux/ipv6.h>
      7#include <uapi/linux/icmpv6.h>
      8
      9static inline struct icmp6hdr *icmp6_hdr(const struct sk_buff *skb)
     10{
     11	return (struct icmp6hdr *)skb_transport_header(skb);
     12}
     13
     14#include <linux/netdevice.h>
     15
     16#if IS_ENABLED(CONFIG_IPV6)
     17
     18typedef void ip6_icmp_send_t(struct sk_buff *skb, u8 type, u8 code, __u32 info,
     19			     const struct in6_addr *force_saddr,
     20			     const struct inet6_skb_parm *parm);
     21void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
     22		const struct in6_addr *force_saddr,
     23		const struct inet6_skb_parm *parm);
     24#if IS_BUILTIN(CONFIG_IPV6)
     25static inline void __icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
     26				 const struct inet6_skb_parm *parm)
     27{
     28	icmp6_send(skb, type, code, info, NULL, parm);
     29}
     30static inline int inet6_register_icmp_sender(ip6_icmp_send_t *fn)
     31{
     32	BUILD_BUG_ON(fn != icmp6_send);
     33	return 0;
     34}
     35static inline int inet6_unregister_icmp_sender(ip6_icmp_send_t *fn)
     36{
     37	BUILD_BUG_ON(fn != icmp6_send);
     38	return 0;
     39}
     40#else
     41extern void __icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
     42			  const struct inet6_skb_parm *parm);
     43extern int inet6_register_icmp_sender(ip6_icmp_send_t *fn);
     44extern int inet6_unregister_icmp_sender(ip6_icmp_send_t *fn);
     45#endif
     46
     47static inline void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
     48{
     49	__icmpv6_send(skb, type, code, info, IP6CB(skb));
     50}
     51
     52int ip6_err_gen_icmpv6_unreach(struct sk_buff *skb, int nhs, int type,
     53			       unsigned int data_len);
     54
     55#if IS_ENABLED(CONFIG_NF_NAT)
     56void icmpv6_ndo_send(struct sk_buff *skb_in, u8 type, u8 code, __u32 info);
     57#else
     58static inline void icmpv6_ndo_send(struct sk_buff *skb_in, u8 type, u8 code, __u32 info)
     59{
     60	struct inet6_skb_parm parm = { 0 };
     61	__icmpv6_send(skb_in, type, code, info, &parm);
     62}
     63#endif
     64
     65#else
     66
     67static inline void icmpv6_send(struct sk_buff *skb,
     68			       u8 type, u8 code, __u32 info)
     69{
     70}
     71
     72static inline void icmpv6_ndo_send(struct sk_buff *skb,
     73				   u8 type, u8 code, __u32 info)
     74{
     75}
     76#endif
     77
     78extern int				icmpv6_init(void);
     79extern int				icmpv6_err_convert(u8 type, u8 code,
     80							   int *err);
     81extern void				icmpv6_cleanup(void);
     82extern void				icmpv6_param_prob_reason(struct sk_buff *skb,
     83								 u8 code, int pos,
     84								 enum skb_drop_reason reason);
     85
     86struct flowi6;
     87struct in6_addr;
     88extern void				icmpv6_flow_init(struct sock *sk,
     89							 struct flowi6 *fl6,
     90							 u8 type,
     91							 const struct in6_addr *saddr,
     92							 const struct in6_addr *daddr,
     93							 int oif);
     94
     95static inline void icmpv6_param_prob(struct sk_buff *skb, u8 code, int pos)
     96{
     97	icmpv6_param_prob_reason(skb, code, pos,
     98				 SKB_DROP_REASON_NOT_SPECIFIED);
     99}
    100
    101static inline bool icmpv6_is_err(int type)
    102{
    103	switch (type) {
    104	case ICMPV6_DEST_UNREACH:
    105	case ICMPV6_PKT_TOOBIG:
    106	case ICMPV6_TIME_EXCEED:
    107	case ICMPV6_PARAMPROB:
    108		return true;
    109	}
    110
    111	return false;
    112}
    113
    114#endif