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l__I|+ ? /* SPDX-License-Identifier: GPL-2.0 */
/* IP Virtual Server
* data structure and functionality definitions
*/
#ifndef _NET_IP_VS_H
#define _NET_IP_VS_H
#include /* definitions shared with userland */
#include /* for __uXX types */
#include /* for struct list_head */
#include /* for struct rwlock_t */
#include /* for struct atomic_t */
#include /* for struct refcount_t */
#include
#include
#include
#include
#include
#include /* for union nf_inet_addr */
#include
#include /* for struct ipv6hdr */
#include
#if IS_ENABLED(CONFIG_NF_CONNTRACK)
#include
#endif
#include /* Netw namespace */
#define IP_VS_HDR_INVERSE 1
#define IP_VS_HDR_ICMP 2
/* Generic access of ipvs struct */
static inline struct netns_ipvs *net_ipvs(struct net* net)
{
return net->ipvs;
}
/* Connections' size value needed by ip_vs_ctl.c */
extern int ip_vs_conn_tab_size;
struct ip_vs_iphdr {
int hdr_flags; /* ipvs flags */
__u32 off; /* Where IP or IPv4 header starts */
__u32 len; /* IPv4 simply where L4 starts
* IPv6 where L4 Transport Header starts */
__u16 fragoffs; /* IPv6 fragment offset, 0 if first frag (or not frag)*/
__s16 protocol;
__s32 flags;
union nf_inet_addr saddr;
union nf_inet_addr daddr;
};
static inline void *frag_safe_skb_hp(const struct sk_buff *skb, int offset,
int len, void *buffer)
{
return skb_header_pointer(skb, offset, len, buffer);
}
/* This function handles filling *ip_vs_iphdr, both for IPv4 and IPv6.
* IPv6 requires some extra work, as finding proper header position,
* depend on the IPv6 extension headers.
*/
static inline int
ip_vs_fill_iph_skb_off(int af, const struct sk_buff *skb, int offset,
int hdr_flags, struct ip_vs_iphdr *iphdr)
{
iphdr->hdr_flags = hdr_flags;
iphdr->off = offset;
#ifdef CONFIG_IP_VS_IPV6
if (af == AF_INET6) {
struct ipv6hdr _iph;
const struct ipv6hdr *iph = skb_header_pointer(
skb, offset