forked from mirrors/linux
5bc67a854c
icmpv6_flow_init(), ip6_datagram_flow_key_init() and ip6_mc_hdr() don't need to modify their sk argument. Make that explicit using const. Signed-off-by: Guillaume Nault <gnault@redhat.com> Reviewed-by: Simon Horman <simon.horman@corigine.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
112 lines
2.9 KiB
C
112 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _LINUX_ICMPV6_H
|
|
#define _LINUX_ICMPV6_H
|
|
|
|
#include <linux/skbuff.h>
|
|
#include <linux/ipv6.h>
|
|
#include <uapi/linux/icmpv6.h>
|
|
|
|
static inline struct icmp6hdr *icmp6_hdr(const struct sk_buff *skb)
|
|
{
|
|
return (struct icmp6hdr *)skb_transport_header(skb);
|
|
}
|
|
|
|
#include <linux/netdevice.h>
|
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
|
|
typedef void ip6_icmp_send_t(struct sk_buff *skb, u8 type, u8 code, __u32 info,
|
|
const struct in6_addr *force_saddr,
|
|
const struct inet6_skb_parm *parm);
|
|
void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
|
|
const struct in6_addr *force_saddr,
|
|
const struct inet6_skb_parm *parm);
|
|
#if IS_BUILTIN(CONFIG_IPV6)
|
|
static inline void __icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
|
|
const struct inet6_skb_parm *parm)
|
|
{
|
|
icmp6_send(skb, type, code, info, NULL, parm);
|
|
}
|
|
static inline int inet6_register_icmp_sender(ip6_icmp_send_t *fn)
|
|
{
|
|
BUILD_BUG_ON(fn != icmp6_send);
|
|
return 0;
|
|
}
|
|
static inline int inet6_unregister_icmp_sender(ip6_icmp_send_t *fn)
|
|
{
|
|
BUILD_BUG_ON(fn != icmp6_send);
|
|
return 0;
|
|
}
|
|
#else
|
|
extern void __icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
|
|
const struct inet6_skb_parm *parm);
|
|
extern int inet6_register_icmp_sender(ip6_icmp_send_t *fn);
|
|
extern int inet6_unregister_icmp_sender(ip6_icmp_send_t *fn);
|
|
#endif
|
|
|
|
static inline void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
|
|
{
|
|
__icmpv6_send(skb, type, code, info, IP6CB(skb));
|
|
}
|
|
|
|
int ip6_err_gen_icmpv6_unreach(struct sk_buff *skb, int nhs, int type,
|
|
unsigned int data_len);
|
|
|
|
#if IS_ENABLED(CONFIG_NF_NAT)
|
|
void icmpv6_ndo_send(struct sk_buff *skb_in, u8 type, u8 code, __u32 info);
|
|
#else
|
|
static inline void icmpv6_ndo_send(struct sk_buff *skb_in, u8 type, u8 code, __u32 info)
|
|
{
|
|
struct inet6_skb_parm parm = { 0 };
|
|
__icmpv6_send(skb_in, type, code, info, &parm);
|
|
}
|
|
#endif
|
|
|
|
#else
|
|
|
|
static inline void icmpv6_send(struct sk_buff *skb,
|
|
u8 type, u8 code, __u32 info)
|
|
{
|
|
}
|
|
|
|
static inline void icmpv6_ndo_send(struct sk_buff *skb,
|
|
u8 type, u8 code, __u32 info)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
extern int icmpv6_init(void);
|
|
extern int icmpv6_err_convert(u8 type, u8 code,
|
|
int *err);
|
|
extern void icmpv6_cleanup(void);
|
|
extern void icmpv6_param_prob_reason(struct sk_buff *skb,
|
|
u8 code, int pos,
|
|
enum skb_drop_reason reason);
|
|
|
|
struct flowi6;
|
|
struct in6_addr;
|
|
|
|
void icmpv6_flow_init(const struct sock *sk, struct flowi6 *fl6, u8 type,
|
|
const struct in6_addr *saddr,
|
|
const struct in6_addr *daddr, int oif);
|
|
|
|
static inline void icmpv6_param_prob(struct sk_buff *skb, u8 code, int pos)
|
|
{
|
|
icmpv6_param_prob_reason(skb, code, pos,
|
|
SKB_DROP_REASON_NOT_SPECIFIED);
|
|
}
|
|
|
|
static inline bool icmpv6_is_err(int type)
|
|
{
|
|
switch (type) {
|
|
case ICMPV6_DEST_UNREACH:
|
|
case ICMPV6_PKT_TOOBIG:
|
|
case ICMPV6_TIME_EXCEED:
|
|
case ICMPV6_PARAMPROB:
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
#endif
|