ip_vs.h (63dca2c0b0e7a92cb39d1b1ecefa32ffda201975) ip_vs.h (2f74713d1436b7d2d0506ba1bc5f10915a73bbec)
1/*
2 * IP Virtual Server
3 * data structure and functionality definitions
4 */
5
6#ifndef _NET_IP_VS_H
7#define _NET_IP_VS_H
8

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104}
105
106/* Connections' size value needed by ip_vs_ctl.c */
107extern int ip_vs_conn_tab_size;
108
109struct ip_vs_iphdr {
110 __u32 len; /* IPv4 simply where L4 starts
111 IPv6 where L4 Transport Header starts */
1/*
2 * IP Virtual Server
3 * data structure and functionality definitions
4 */
5
6#ifndef _NET_IP_VS_H
7#define _NET_IP_VS_H
8

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104}
105
106/* Connections' size value needed by ip_vs_ctl.c */
107extern int ip_vs_conn_tab_size;
108
109struct ip_vs_iphdr {
110 __u32 len; /* IPv4 simply where L4 starts
111 IPv6 where L4 Transport Header starts */
112 __u32 thoff_reasm; /* Transport Header Offset in nfct_reasm skb */
112 __u16 fragoffs; /* IPv6 fragment offset, 0 if first frag (or not frag)*/
113 __s16 protocol;
114 __s32 flags;
115 union nf_inet_addr saddr;
116 union nf_inet_addr daddr;
117};
118
113 __u16 fragoffs; /* IPv6 fragment offset, 0 if first frag (or not frag)*/
114 __s16 protocol;
115 __s32 flags;
116 union nf_inet_addr saddr;
117 union nf_inet_addr daddr;
118};
119
120/* Dependency to module: nf_defrag_ipv6 */
121#if defined(CONFIG_NF_DEFRAG_IPV6) || defined(CONFIG_NF_DEFRAG_IPV6_MODULE)
122static inline struct sk_buff *skb_nfct_reasm(const struct sk_buff *skb)
123{
124 return skb->nfct_reasm;
125}
126static inline void *frag_safe_skb_hp(const struct sk_buff *skb, int offset,
127 int len, void *buffer,
128 const struct ip_vs_iphdr *ipvsh)
129{
130 if (unlikely(ipvsh->fragoffs && skb_nfct_reasm(skb)))
131 return skb_header_pointer(skb_nfct_reasm(skb),
132 ipvsh->thoff_reasm, len, buffer);
133
134 return skb_header_pointer(skb, offset, len, buffer);
135}
136#else
137static inline struct sk_buff *skb_nfct_reasm(const struct sk_buff *skb)
138{
139 return NULL;
140}
141static inline void *frag_safe_skb_hp(const struct sk_buff *skb, int offset,
142 int len, void *buffer,
143 const struct ip_vs_iphdr *ipvsh)
144{
145 return skb_header_pointer(skb, offset, len, buffer);
146}
147#endif
148
119static inline void
120ip_vs_fill_ip4hdr(const void *nh, struct ip_vs_iphdr *iphdr)
121{
122 const struct iphdr *iph = nh;
123
124 iphdr->len = iph->ihl * 4;
125 iphdr->fragoffs = 0;
126 iphdr->protocol = iph->protocol;

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136ip_vs_fill_iph_skb(int af, const struct sk_buff *skb, struct ip_vs_iphdr *iphdr)
137{
138#ifdef CONFIG_IP_VS_IPV6
139 if (af == AF_INET6) {
140 const struct ipv6hdr *iph =
141 (struct ipv6hdr *)skb_network_header(skb);
142 iphdr->saddr.in6 = iph->saddr;
143 iphdr->daddr.in6 = iph->daddr;
149static inline void
150ip_vs_fill_ip4hdr(const void *nh, struct ip_vs_iphdr *iphdr)
151{
152 const struct iphdr *iph = nh;
153
154 iphdr->len = iph->ihl * 4;
155 iphdr->fragoffs = 0;
156 iphdr->protocol = iph->protocol;

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166ip_vs_fill_iph_skb(int af, const struct sk_buff *skb, struct ip_vs_iphdr *iphdr)
167{
168#ifdef CONFIG_IP_VS_IPV6
169 if (af == AF_INET6) {
170 const struct ipv6hdr *iph =
171 (struct ipv6hdr *)skb_network_header(skb);
172 iphdr->saddr.in6 = iph->saddr;
173 iphdr->daddr.in6 = iph->daddr;
144 /* ipv6_find_hdr() updates len, flags */
174 /* ipv6_find_hdr() updates len, flags, thoff_reasm */
175 iphdr->thoff_reasm = 0;
145 iphdr->len = 0;
146 iphdr->flags = 0;
147 iphdr->protocol = ipv6_find_hdr(skb, &iphdr->len, -1,
148 &iphdr->fragoffs,
149 &iphdr->flags);
176 iphdr->len = 0;
177 iphdr->flags = 0;
178 iphdr->protocol = ipv6_find_hdr(skb, &iphdr->len, -1,
179 &iphdr->fragoffs,
180 &iphdr->flags);
181 /* get proto from re-assembled packet and it's offset */
182 if (skb_nfct_reasm(skb))
183 iphdr->protocol = ipv6_find_hdr(skb_nfct_reasm(skb),
184 &iphdr->thoff_reasm,
185 -1, NULL, NULL);
186
150 } else
151#endif
152 {
153 const struct iphdr *iph =
154 (struct iphdr *)skb_network_header(skb);
155 iphdr->len = iph->ihl * 4;
156 iphdr->fragoffs = 0;
157 iphdr->protocol = iph->protocol;

--- 1400 unchanged lines hidden --- 		187 } else
188#endif
189 {
190 const struct iphdr *iph =
191 (struct iphdr *)skb_network_header(skb);
192 iphdr->len = iph->ihl * 4;
193 iphdr->fragoffs = 0;
194 iphdr->protocol = iph->protocol;

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