Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1 | /* IP Virtual Server |
| 2 | * data structure and functionality definitions |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | */ |
| 4 | |
Julius Volz | bc4768e | 2008-07-31 20:45:24 -0700 | [diff] [blame] | 5 | #ifndef _NET_IP_VS_H |
| 6 | #define _NET_IP_VS_H |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | |
Julius Volz | bc4768e | 2008-07-31 20:45:24 -0700 | [diff] [blame] | 8 | #include <linux/ip_vs.h> /* definitions shared with userland */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | |
Julius Volz | bc4768e | 2008-07-31 20:45:24 -0700 | [diff] [blame] | 10 | #include <asm/types.h> /* for __uXX types */ |
| 11 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | #include <linux/list.h> /* for struct list_head */ |
| 13 | #include <linux/spinlock.h> /* for struct rwlock_t */ |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 14 | #include <linux/atomic.h> /* for struct atomic_t */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | #include <linux/compiler.h> |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 16 | #include <linux/timer.h> |
Paul Gortmaker | 187f188 | 2011-11-23 20:12:59 -0500 | [diff] [blame] | 17 | #include <linux/bug.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 19 | #include <net/checksum.h> |
Julius Volz | e7ade46 | 2008-09-02 15:55:33 +0200 | [diff] [blame] | 20 | #include <linux/netfilter.h> /* for union nf_inet_addr */ |
KOVACS Krisztian | 1668e01 | 2008-10-01 07:33:10 -0700 | [diff] [blame] | 21 | #include <linux/ip.h> |
Julius Volz | e7ade46 | 2008-09-02 15:55:33 +0200 | [diff] [blame] | 22 | #include <linux/ipv6.h> /* for struct ipv6hdr */ |
Alexey Dobriyan | 4e3fd7a | 2011-11-21 03:39:03 +0000 | [diff] [blame] | 23 | #include <net/ipv6.h> |
Jesper Dangaard Brouer | 54d83ef | 2012-10-22 21:22:45 +0200 | [diff] [blame] | 24 | #if IS_ENABLED(CONFIG_IP_VS_IPV6) |
Jesper Dangaard Brouer | 63dca2c | 2012-09-26 14:06:41 +0200 | [diff] [blame] | 25 | #include <linux/netfilter_ipv6/ip6_tables.h> |
| 26 | #endif |
Jesper Dangaard Brouer | a638e51 | 2012-09-26 14:06:20 +0200 | [diff] [blame] | 27 | #if IS_ENABLED(CONFIG_NF_CONNTRACK) |
Julian Anastasov | f4bc17c | 2010-09-21 17:35:41 +0200 | [diff] [blame] | 28 | #include <net/netfilter/nf_conntrack.h> |
| 29 | #endif |
Hans Schillstrom | 61b1ab4 | 2011-01-03 14:44:42 +0100 | [diff] [blame] | 30 | #include <net/net_namespace.h> /* Netw namespace */ |
| 31 | |
Alex Gartrell | 4fd9bee | 2015-08-26 09:40:29 -0700 | [diff] [blame] | 32 | #define IP_VS_HDR_INVERSE 1 |
| 33 | #define IP_VS_HDR_ICMP 2 |
| 34 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 35 | /* Generic access of ipvs struct */ |
Hans Schillstrom | 61b1ab4 | 2011-01-03 14:44:42 +0100 | [diff] [blame] | 36 | static inline struct netns_ipvs *net_ipvs(struct net* net) |
| 37 | { |
| 38 | return net->ipvs; |
| 39 | } |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 40 | |
| 41 | /* Get net ptr from skb in traffic cases |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 42 | * use skb_sknet when call is from userland (ioctl or netlink) |
| 43 | */ |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 44 | static inline struct net *skb_net(const struct sk_buff *skb) |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 45 | { |
| 46 | #ifdef CONFIG_NET_NS |
| 47 | #ifdef CONFIG_IP_VS_DEBUG |
| 48 | /* |
| 49 | * This is used for debug only. |
| 50 | * Start with the most likely hit |
| 51 | * End with BUG |
| 52 | */ |
Eric W. Biederman | 0c5c9fb | 2015-03-11 23:06:44 -0500 | [diff] [blame] | 53 | if (likely(skb->dev && dev_net(skb->dev))) |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 54 | return dev_net(skb->dev); |
Hans Schillstrom | a09d197 | 2011-04-04 15:25:18 +0200 | [diff] [blame] | 55 | if (skb_dst(skb) && skb_dst(skb)->dev) |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 56 | return dev_net(skb_dst(skb)->dev); |
| 57 | WARN(skb->sk, "Maybe skb_sknet should be used in %s() at line:%d\n", |
| 58 | __func__, __LINE__); |
Eric W. Biederman | 0c5c9fb | 2015-03-11 23:06:44 -0500 | [diff] [blame] | 59 | if (likely(skb->sk && sock_net(skb->sk))) |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 60 | return sock_net(skb->sk); |
| 61 | pr_err("There is no net ptr to find in the skb in %s() line:%d\n", |
| 62 | __func__, __LINE__); |
| 63 | BUG(); |
| 64 | #else |
| 65 | return dev_net(skb->dev ? : skb_dst(skb)->dev); |
| 66 | #endif |
| 67 | #else |
| 68 | return &init_net; |
| 69 | #endif |
| 70 | } |
| 71 | |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 72 | static inline struct net *skb_sknet(const struct sk_buff *skb) |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 73 | { |
| 74 | #ifdef CONFIG_NET_NS |
| 75 | #ifdef CONFIG_IP_VS_DEBUG |
| 76 | /* Start with the most likely hit */ |
Eric W. Biederman | 0c5c9fb | 2015-03-11 23:06:44 -0500 | [diff] [blame] | 77 | if (likely(skb->sk && sock_net(skb->sk))) |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 78 | return sock_net(skb->sk); |
| 79 | WARN(skb->dev, "Maybe skb_net should be used instead in %s() line:%d\n", |
| 80 | __func__, __LINE__); |
Eric W. Biederman | 0c5c9fb | 2015-03-11 23:06:44 -0500 | [diff] [blame] | 81 | if (likely(skb->dev && dev_net(skb->dev))) |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 82 | return dev_net(skb->dev); |
| 83 | pr_err("There is no net ptr to find in the skb in %s() line:%d\n", |
| 84 | __func__, __LINE__); |
| 85 | BUG(); |
| 86 | #else |
| 87 | return sock_net(skb->sk); |
| 88 | #endif |
| 89 | #else |
| 90 | return &init_net; |
| 91 | #endif |
| 92 | } |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 93 | |
| 94 | /* This one needed for single_open_net since net is stored directly in |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 95 | * private not as a struct i.e. seq_file_net can't be used. |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 96 | */ |
| 97 | static inline struct net *seq_file_single_net(struct seq_file *seq) |
| 98 | { |
| 99 | #ifdef CONFIG_NET_NS |
| 100 | return (struct net *)seq->private; |
| 101 | #else |
| 102 | return &init_net; |
| 103 | #endif |
| 104 | } |
Catalin(ux) M. BOIE | 6f7edb4 | 2010-01-05 05:50:24 +0100 | [diff] [blame] | 105 | |
| 106 | /* Connections' size value needed by ip_vs_ctl.c */ |
| 107 | extern int ip_vs_conn_tab_size; |
| 108 | |
Julius Volz | 64aae3c | 2008-09-02 15:55:34 +0200 | [diff] [blame] | 109 | struct ip_vs_iphdr { |
Alex Gartrell | 4fd9bee | 2015-08-26 09:40:29 -0700 | [diff] [blame] | 110 | int hdr_flags; /* ipvs flags */ |
Alex Gartrell | b0e010c | 2015-08-26 09:40:28 -0700 | [diff] [blame] | 111 | __u32 off; /* Where IP or IPv4 header starts */ |
Jesper Dangaard Brouer | 63dca2c | 2012-09-26 14:06:41 +0200 | [diff] [blame] | 112 | __u32 len; /* IPv4 simply where L4 starts |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 113 | * IPv6 where L4 Transport Header starts */ |
Jesper Dangaard Brouer | 63dca2c | 2012-09-26 14:06:41 +0200 | [diff] [blame] | 114 | __u16 fragoffs; /* IPv6 fragment offset, 0 if first frag (or not frag)*/ |
| 115 | __s16 protocol; |
| 116 | __s32 flags; |
Julius Volz | 64aae3c | 2008-09-02 15:55:34 +0200 | [diff] [blame] | 117 | union nf_inet_addr saddr; |
| 118 | union nf_inet_addr daddr; |
| 119 | }; |
| 120 | |
Jesper Dangaard Brouer | 2f74713 | 2012-09-26 14:06:59 +0200 | [diff] [blame] | 121 | static inline void *frag_safe_skb_hp(const struct sk_buff *skb, int offset, |
| 122 | int len, void *buffer, |
| 123 | const struct ip_vs_iphdr *ipvsh) |
| 124 | { |
| 125 | return skb_header_pointer(skb, offset, len, buffer); |
| 126 | } |
Jesper Dangaard Brouer | 2f74713 | 2012-09-26 14:06:59 +0200 | [diff] [blame] | 127 | |
Jesper Dangaard Brouer | 63dca2c | 2012-09-26 14:06:41 +0200 | [diff] [blame] | 128 | /* This function handles filling *ip_vs_iphdr, both for IPv4 and IPv6. |
| 129 | * IPv6 requires some extra work, as finding proper header position, |
| 130 | * depend on the IPv6 extension headers. |
| 131 | */ |
Alex Gartrell | b0e010c | 2015-08-26 09:40:28 -0700 | [diff] [blame] | 132 | static inline int |
| 133 | ip_vs_fill_iph_skb_off(int af, const struct sk_buff *skb, int offset, |
Alex Gartrell | 4fd9bee | 2015-08-26 09:40:29 -0700 | [diff] [blame] | 134 | int hdr_flags, struct ip_vs_iphdr *iphdr) |
Julius Volz | 64aae3c | 2008-09-02 15:55:34 +0200 | [diff] [blame] | 135 | { |
Alex Gartrell | 4fd9bee | 2015-08-26 09:40:29 -0700 | [diff] [blame] | 136 | iphdr->hdr_flags = hdr_flags; |
Alex Gartrell | b0e010c | 2015-08-26 09:40:28 -0700 | [diff] [blame] | 137 | iphdr->off = offset; |
Alex Gartrell | 4fd9bee | 2015-08-26 09:40:29 -0700 | [diff] [blame] | 138 | |
Julius Volz | 64aae3c | 2008-09-02 15:55:34 +0200 | [diff] [blame] | 139 | #ifdef CONFIG_IP_VS_IPV6 |
| 140 | if (af == AF_INET6) { |
Alex Gartrell | b0e010c | 2015-08-26 09:40:28 -0700 | [diff] [blame] | 141 | struct ipv6hdr _iph; |
| 142 | const struct ipv6hdr *iph = skb_header_pointer( |
| 143 | skb, offset, sizeof(_iph), &_iph); |
| 144 | if (!iph) |
| 145 | return 0; |
| 146 | |
Alexey Dobriyan | 4e3fd7a | 2011-11-21 03:39:03 +0000 | [diff] [blame] | 147 | iphdr->saddr.in6 = iph->saddr; |
| 148 | iphdr->daddr.in6 = iph->daddr; |
Jiri Pirko | 6aafeef | 2013-11-06 17:52:20 +0100 | [diff] [blame] | 149 | /* ipv6_find_hdr() updates len, flags */ |
Alex Gartrell | b0e010c | 2015-08-26 09:40:28 -0700 | [diff] [blame] | 150 | iphdr->len = offset; |
Jesper Dangaard Brouer | 63dca2c | 2012-09-26 14:06:41 +0200 | [diff] [blame] | 151 | iphdr->flags = 0; |
| 152 | iphdr->protocol = ipv6_find_hdr(skb, &iphdr->len, -1, |
| 153 | &iphdr->fragoffs, |
| 154 | &iphdr->flags); |
Alex Gartrell | b0e010c | 2015-08-26 09:40:28 -0700 | [diff] [blame] | 155 | if (iphdr->protocol < 0) |
| 156 | return 0; |
Julius Volz | 64aae3c | 2008-09-02 15:55:34 +0200 | [diff] [blame] | 157 | } else |
| 158 | #endif |
| 159 | { |
Alex Gartrell | b0e010c | 2015-08-26 09:40:28 -0700 | [diff] [blame] | 160 | struct iphdr _iph; |
| 161 | const struct iphdr *iph = skb_header_pointer( |
| 162 | skb, offset, sizeof(_iph), &_iph); |
| 163 | if (!iph) |
| 164 | return 0; |
| 165 | |
| 166 | iphdr->len = offset + iph->ihl * 4; |
Jesper Dangaard Brouer | 63dca2c | 2012-09-26 14:06:41 +0200 | [diff] [blame] | 167 | iphdr->fragoffs = 0; |
| 168 | iphdr->protocol = iph->protocol; |
| 169 | iphdr->saddr.ip = iph->saddr; |
| 170 | iphdr->daddr.ip = iph->daddr; |
| 171 | } |
Alex Gartrell | b0e010c | 2015-08-26 09:40:28 -0700 | [diff] [blame] | 172 | |
| 173 | return 1; |
| 174 | } |
| 175 | |
| 176 | static inline int |
Alex Gartrell | 4fd9bee | 2015-08-26 09:40:29 -0700 | [diff] [blame] | 177 | ip_vs_fill_iph_skb_icmp(int af, const struct sk_buff *skb, int offset, |
| 178 | bool inverse, struct ip_vs_iphdr *iphdr) |
Alex Gartrell | b0e010c | 2015-08-26 09:40:28 -0700 | [diff] [blame] | 179 | { |
Alex Gartrell | 4fd9bee | 2015-08-26 09:40:29 -0700 | [diff] [blame] | 180 | int hdr_flags = IP_VS_HDR_ICMP; |
| 181 | |
| 182 | if (inverse) |
| 183 | hdr_flags |= IP_VS_HDR_INVERSE; |
| 184 | |
| 185 | return ip_vs_fill_iph_skb_off(af, skb, offset, hdr_flags, iphdr); |
| 186 | } |
| 187 | |
| 188 | static inline int |
| 189 | ip_vs_fill_iph_skb(int af, const struct sk_buff *skb, bool inverse, |
| 190 | struct ip_vs_iphdr *iphdr) |
| 191 | { |
| 192 | int hdr_flags = 0; |
| 193 | |
| 194 | if (inverse) |
| 195 | hdr_flags |= IP_VS_HDR_INVERSE; |
| 196 | |
| 197 | return ip_vs_fill_iph_skb_off(af, skb, skb_network_offset(skb), |
| 198 | hdr_flags, iphdr); |
| 199 | } |
| 200 | |
| 201 | static inline bool |
| 202 | ip_vs_iph_inverse(const struct ip_vs_iphdr *iph) |
| 203 | { |
| 204 | return !!(iph->hdr_flags & IP_VS_HDR_INVERSE); |
| 205 | } |
| 206 | |
| 207 | static inline bool |
| 208 | ip_vs_iph_icmp(const struct ip_vs_iphdr *iph) |
| 209 | { |
| 210 | return !!(iph->hdr_flags & IP_VS_HDR_ICMP); |
Jesper Dangaard Brouer | 63dca2c | 2012-09-26 14:06:41 +0200 | [diff] [blame] | 211 | } |
| 212 | |
Julius Volz | 64aae3c | 2008-09-02 15:55:34 +0200 | [diff] [blame] | 213 | static inline void ip_vs_addr_copy(int af, union nf_inet_addr *dst, |
| 214 | const union nf_inet_addr *src) |
| 215 | { |
| 216 | #ifdef CONFIG_IP_VS_IPV6 |
| 217 | if (af == AF_INET6) |
Alexey Dobriyan | 4e3fd7a | 2011-11-21 03:39:03 +0000 | [diff] [blame] | 218 | dst->in6 = src->in6; |
Julius Volz | 64aae3c | 2008-09-02 15:55:34 +0200 | [diff] [blame] | 219 | else |
| 220 | #endif |
| 221 | dst->ip = src->ip; |
| 222 | } |
| 223 | |
Julian Anastasov | 9a05475c | 2013-03-21 11:58:12 +0200 | [diff] [blame] | 224 | static inline void ip_vs_addr_set(int af, union nf_inet_addr *dst, |
| 225 | const union nf_inet_addr *src) |
| 226 | { |
| 227 | #ifdef CONFIG_IP_VS_IPV6 |
| 228 | if (af == AF_INET6) { |
| 229 | dst->in6 = src->in6; |
| 230 | return; |
| 231 | } |
| 232 | #endif |
| 233 | dst->ip = src->ip; |
| 234 | dst->all[1] = 0; |
| 235 | dst->all[2] = 0; |
| 236 | dst->all[3] = 0; |
| 237 | } |
| 238 | |
Julius Volz | 64aae3c | 2008-09-02 15:55:34 +0200 | [diff] [blame] | 239 | static inline int ip_vs_addr_equal(int af, const union nf_inet_addr *a, |
| 240 | const union nf_inet_addr *b) |
| 241 | { |
| 242 | #ifdef CONFIG_IP_VS_IPV6 |
| 243 | if (af == AF_INET6) |
| 244 | return ipv6_addr_equal(&a->in6, &b->in6); |
| 245 | #endif |
| 246 | return a->ip == b->ip; |
| 247 | } |
| 248 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | #ifdef CONFIG_IP_VS_DEBUG |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 250 | #include <linux/net.h> |
| 251 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 252 | int ip_vs_get_debug_level(void); |
Julius Volz | c842a3a | 2008-09-02 15:55:35 +0200 | [diff] [blame] | 253 | |
| 254 | static inline const char *ip_vs_dbg_addr(int af, char *buf, size_t buf_len, |
| 255 | const union nf_inet_addr *addr, |
| 256 | int *idx) |
| 257 | { |
| 258 | int len; |
| 259 | #ifdef CONFIG_IP_VS_IPV6 |
| 260 | if (af == AF_INET6) |
Jesper Dangaard Brouer | 120b9c1 | 2012-09-26 14:05:53 +0200 | [diff] [blame] | 261 | len = snprintf(&buf[*idx], buf_len - *idx, "[%pI6c]", |
Harvey Harrison | 0c6ce78 | 2008-10-28 16:09:23 -0700 | [diff] [blame] | 262 | &addr->in6) + 1; |
Julius Volz | c842a3a | 2008-09-02 15:55:35 +0200 | [diff] [blame] | 263 | else |
| 264 | #endif |
Harvey Harrison | 3685f25d | 2008-10-31 00:56:49 -0700 | [diff] [blame] | 265 | len = snprintf(&buf[*idx], buf_len - *idx, "%pI4", |
| 266 | &addr->ip) + 1; |
Julius Volz | c842a3a | 2008-09-02 15:55:35 +0200 | [diff] [blame] | 267 | |
| 268 | *idx += len; |
| 269 | BUG_ON(*idx > buf_len + 1); |
| 270 | return &buf[*idx - len]; |
| 271 | } |
| 272 | |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 273 | #define IP_VS_DBG_BUF(level, msg, ...) \ |
| 274 | do { \ |
| 275 | char ip_vs_dbg_buf[160]; \ |
| 276 | int ip_vs_dbg_idx = 0; \ |
| 277 | if (level <= ip_vs_get_debug_level()) \ |
| 278 | printk(KERN_DEBUG pr_fmt(msg), ##__VA_ARGS__); \ |
| 279 | } while (0) |
| 280 | #define IP_VS_ERR_BUF(msg...) \ |
| 281 | do { \ |
| 282 | char ip_vs_dbg_buf[160]; \ |
| 283 | int ip_vs_dbg_idx = 0; \ |
| 284 | pr_err(msg); \ |
| 285 | } while (0) |
Julius Volz | c842a3a | 2008-09-02 15:55:35 +0200 | [diff] [blame] | 286 | |
| 287 | /* Only use from within IP_VS_DBG_BUF() or IP_VS_ERR_BUF macros */ |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 288 | #define IP_VS_DBG_ADDR(af, addr) \ |
| 289 | ip_vs_dbg_addr(af, ip_vs_dbg_buf, \ |
| 290 | sizeof(ip_vs_dbg_buf), addr, \ |
| 291 | &ip_vs_dbg_idx) |
Julius Volz | c842a3a | 2008-09-02 15:55:35 +0200 | [diff] [blame] | 292 | |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 293 | #define IP_VS_DBG(level, msg, ...) \ |
| 294 | do { \ |
| 295 | if (level <= ip_vs_get_debug_level()) \ |
| 296 | printk(KERN_DEBUG pr_fmt(msg), ##__VA_ARGS__); \ |
| 297 | } while (0) |
| 298 | #define IP_VS_DBG_RL(msg, ...) \ |
| 299 | do { \ |
| 300 | if (net_ratelimit()) \ |
| 301 | printk(KERN_DEBUG pr_fmt(msg), ##__VA_ARGS__); \ |
| 302 | } while (0) |
Julian Anastasov | 0d79641 | 2010-10-17 16:46:17 +0300 | [diff] [blame] | 303 | #define IP_VS_DBG_PKT(level, af, pp, skb, ofs, msg) \ |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 304 | do { \ |
| 305 | if (level <= ip_vs_get_debug_level()) \ |
Julian Anastasov | 0d79641 | 2010-10-17 16:46:17 +0300 | [diff] [blame] | 306 | pp->debug_packet(af, pp, skb, ofs, msg); \ |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 307 | } while (0) |
Julian Anastasov | 0d79641 | 2010-10-17 16:46:17 +0300 | [diff] [blame] | 308 | #define IP_VS_DBG_RL_PKT(level, af, pp, skb, ofs, msg) \ |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 309 | do { \ |
| 310 | if (level <= ip_vs_get_debug_level() && \ |
| 311 | net_ratelimit()) \ |
Julian Anastasov | 0d79641 | 2010-10-17 16:46:17 +0300 | [diff] [blame] | 312 | pp->debug_packet(af, pp, skb, ofs, msg); \ |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 313 | } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | #else /* NO DEBUGGING at ALL */ |
Julius Volz | c842a3a | 2008-09-02 15:55:35 +0200 | [diff] [blame] | 315 | #define IP_VS_DBG_BUF(level, msg...) do {} while (0) |
| 316 | #define IP_VS_ERR_BUF(msg...) do {} while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | #define IP_VS_DBG(level, msg...) do {} while (0) |
| 318 | #define IP_VS_DBG_RL(msg...) do {} while (0) |
Julian Anastasov | 0d79641 | 2010-10-17 16:46:17 +0300 | [diff] [blame] | 319 | #define IP_VS_DBG_PKT(level, af, pp, skb, ofs, msg) do {} while (0) |
| 320 | #define IP_VS_DBG_RL_PKT(level, af, pp, skb, ofs, msg) do {} while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | #endif |
| 322 | |
| 323 | #define IP_VS_BUG() BUG() |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 324 | #define IP_VS_ERR_RL(msg, ...) \ |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 325 | do { \ |
| 326 | if (net_ratelimit()) \ |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 327 | pr_err(msg, ##__VA_ARGS__); \ |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 328 | } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | |
| 330 | #ifdef CONFIG_IP_VS_DEBUG |
| 331 | #define EnterFunction(level) \ |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 332 | do { \ |
| 333 | if (level <= ip_vs_get_debug_level()) \ |
| 334 | printk(KERN_DEBUG \ |
| 335 | pr_fmt("Enter: %s, %s line %i\n"), \ |
| 336 | __func__, __FILE__, __LINE__); \ |
| 337 | } while (0) |
| 338 | #define LeaveFunction(level) \ |
| 339 | do { \ |
| 340 | if (level <= ip_vs_get_debug_level()) \ |
| 341 | printk(KERN_DEBUG \ |
| 342 | pr_fmt("Leave: %s, %s line %i\n"), \ |
| 343 | __func__, __FILE__, __LINE__); \ |
| 344 | } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | #else |
| 346 | #define EnterFunction(level) do {} while (0) |
| 347 | #define LeaveFunction(level) do {} while (0) |
| 348 | #endif |
| 349 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 350 | /* The port number of FTP service (in network order). */ |
Harvey Harrison | f3a7c66 | 2009-02-14 22:58:35 -0800 | [diff] [blame] | 351 | #define FTPPORT cpu_to_be16(21) |
| 352 | #define FTPDATA cpu_to_be16(20) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 354 | /* TCP State Values */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | enum { |
| 356 | IP_VS_TCP_S_NONE = 0, |
| 357 | IP_VS_TCP_S_ESTABLISHED, |
| 358 | IP_VS_TCP_S_SYN_SENT, |
| 359 | IP_VS_TCP_S_SYN_RECV, |
| 360 | IP_VS_TCP_S_FIN_WAIT, |
| 361 | IP_VS_TCP_S_TIME_WAIT, |
| 362 | IP_VS_TCP_S_CLOSE, |
| 363 | IP_VS_TCP_S_CLOSE_WAIT, |
| 364 | IP_VS_TCP_S_LAST_ACK, |
| 365 | IP_VS_TCP_S_LISTEN, |
| 366 | IP_VS_TCP_S_SYNACK, |
| 367 | IP_VS_TCP_S_LAST |
| 368 | }; |
| 369 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 370 | /* UDP State Values */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | enum { |
| 372 | IP_VS_UDP_S_NORMAL, |
| 373 | IP_VS_UDP_S_LAST, |
| 374 | }; |
| 375 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 376 | /* ICMP State Values */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | enum { |
| 378 | IP_VS_ICMP_S_NORMAL, |
| 379 | IP_VS_ICMP_S_LAST, |
| 380 | }; |
| 381 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 382 | /* SCTP State Values */ |
Venkata Mohan Reddy | 2906f66 | 2010-02-18 12:31:05 +0100 | [diff] [blame] | 383 | enum ip_vs_sctp_states { |
| 384 | IP_VS_SCTP_S_NONE, |
Julian Anastasov | 61e7c42 | 2013-06-18 10:08:07 +0300 | [diff] [blame] | 385 | IP_VS_SCTP_S_INIT1, |
| 386 | IP_VS_SCTP_S_INIT, |
| 387 | IP_VS_SCTP_S_COOKIE_SENT, |
| 388 | IP_VS_SCTP_S_COOKIE_REPLIED, |
| 389 | IP_VS_SCTP_S_COOKIE_WAIT, |
| 390 | IP_VS_SCTP_S_COOKIE, |
| 391 | IP_VS_SCTP_S_COOKIE_ECHOED, |
Venkata Mohan Reddy | 2906f66 | 2010-02-18 12:31:05 +0100 | [diff] [blame] | 392 | IP_VS_SCTP_S_ESTABLISHED, |
Julian Anastasov | 61e7c42 | 2013-06-18 10:08:07 +0300 | [diff] [blame] | 393 | IP_VS_SCTP_S_SHUTDOWN_SENT, |
| 394 | IP_VS_SCTP_S_SHUTDOWN_RECEIVED, |
| 395 | IP_VS_SCTP_S_SHUTDOWN_ACK_SENT, |
| 396 | IP_VS_SCTP_S_REJECTED, |
Venkata Mohan Reddy | 2906f66 | 2010-02-18 12:31:05 +0100 | [diff] [blame] | 397 | IP_VS_SCTP_S_CLOSED, |
| 398 | IP_VS_SCTP_S_LAST |
| 399 | }; |
| 400 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 401 | /* Delta sequence info structure |
| 402 | * Each ip_vs_conn has 2 (output AND input seq. changes). |
| 403 | * Only used in the VS/NAT. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | */ |
| 405 | struct ip_vs_seq { |
| 406 | __u32 init_seq; /* Add delta from this seq */ |
| 407 | __u32 delta; /* Delta in sequence numbers */ |
| 408 | __u32 previous_delta; /* Delta in sequence numbers |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 409 | * before last resized pkt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | }; |
| 411 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 412 | /* counters per cpu */ |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 413 | struct ip_vs_counters { |
Julian Anastasov | cd67cd5 | 2015-02-06 09:44:44 +0200 | [diff] [blame] | 414 | __u64 conns; /* connections scheduled */ |
| 415 | __u64 inpkts; /* incoming packets */ |
| 416 | __u64 outpkts; /* outgoing packets */ |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 417 | __u64 inbytes; /* incoming bytes */ |
| 418 | __u64 outbytes; /* outgoing bytes */ |
| 419 | }; |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 420 | /* Stats per cpu */ |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 421 | struct ip_vs_cpu_stats { |
Julian Anastasov | cd67cd5 | 2015-02-06 09:44:44 +0200 | [diff] [blame] | 422 | struct ip_vs_counters cnt; |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 423 | struct u64_stats_sync syncp; |
| 424 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 426 | /* IPVS statistics objects */ |
Sven Wegener | 3a14a313 | 2008-08-10 18:24:41 +0000 | [diff] [blame] | 427 | struct ip_vs_estimator { |
| 428 | struct list_head list; |
| 429 | |
| 430 | u64 last_inbytes; |
| 431 | u64 last_outbytes; |
Julian Anastasov | cd67cd5 | 2015-02-06 09:44:44 +0200 | [diff] [blame] | 432 | u64 last_conns; |
| 433 | u64 last_inpkts; |
| 434 | u64 last_outpkts; |
Sven Wegener | 3a14a313 | 2008-08-10 18:24:41 +0000 | [diff] [blame] | 435 | |
Julian Anastasov | cd67cd5 | 2015-02-06 09:44:44 +0200 | [diff] [blame] | 436 | u64 cps; |
| 437 | u64 inpps; |
| 438 | u64 outpps; |
| 439 | u64 inbps; |
| 440 | u64 outbps; |
| 441 | }; |
| 442 | |
| 443 | /* |
| 444 | * IPVS statistics object, 64-bit kernel version of struct ip_vs_stats_user |
| 445 | */ |
| 446 | struct ip_vs_kstats { |
| 447 | u64 conns; /* connections scheduled */ |
| 448 | u64 inpkts; /* incoming packets */ |
| 449 | u64 outpkts; /* outgoing packets */ |
| 450 | u64 inbytes; /* incoming bytes */ |
| 451 | u64 outbytes; /* outgoing bytes */ |
| 452 | |
| 453 | u64 cps; /* current connection rate */ |
| 454 | u64 inpps; /* current in packet rate */ |
| 455 | u64 outpps; /* current out packet rate */ |
| 456 | u64 inbps; /* current in byte rate */ |
| 457 | u64 outbps; /* current out byte rate */ |
Sven Wegener | 3a14a313 | 2008-08-10 18:24:41 +0000 | [diff] [blame] | 458 | }; |
| 459 | |
Eric Dumazet | fd2c3ef | 2009-11-03 03:26:03 +0000 | [diff] [blame] | 460 | struct ip_vs_stats { |
Julian Anastasov | cd67cd5 | 2015-02-06 09:44:44 +0200 | [diff] [blame] | 461 | struct ip_vs_kstats kstats; /* kernel statistics */ |
Sven Wegener | e9c0ce2 | 2008-09-08 13:39:04 +0200 | [diff] [blame] | 462 | struct ip_vs_estimator est; /* estimator */ |
Julian Anastasov | b962abd | 2013-03-09 23:25:08 +0200 | [diff] [blame] | 463 | struct ip_vs_cpu_stats __percpu *cpustats; /* per cpu counters */ |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 464 | spinlock_t lock; /* spin lock */ |
Julian Anastasov | cd67cd5 | 2015-02-06 09:44:44 +0200 | [diff] [blame] | 465 | struct ip_vs_kstats kstats0; /* reset values */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | }; |
| 467 | |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 468 | struct dst_entry; |
| 469 | struct iphdr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | struct ip_vs_conn; |
| 471 | struct ip_vs_app; |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 472 | struct sk_buff; |
Hans Schillstrom | 252c641 | 2011-01-03 14:44:46 +0100 | [diff] [blame] | 473 | struct ip_vs_proto_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | |
| 475 | struct ip_vs_protocol { |
| 476 | struct ip_vs_protocol *next; |
| 477 | char *name; |
Julian Anastasov | 2ad17de | 2008-04-29 03:21:23 -0700 | [diff] [blame] | 478 | u16 protocol; |
| 479 | u16 num_states; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | int dont_defrag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | |
| 482 | void (*init)(struct ip_vs_protocol *pp); |
| 483 | |
| 484 | void (*exit)(struct ip_vs_protocol *pp); |
| 485 | |
Hans Schillstrom | 582b8e3 | 2012-04-26 09:45:35 +0200 | [diff] [blame] | 486 | int (*init_netns)(struct net *net, struct ip_vs_proto_data *pd); |
Hans Schillstrom | 252c641 | 2011-01-03 14:44:46 +0100 | [diff] [blame] | 487 | |
| 488 | void (*exit_netns)(struct net *net, struct ip_vs_proto_data *pd); |
| 489 | |
Julius Volz | 51ef348 | 2008-09-02 15:55:40 +0200 | [diff] [blame] | 490 | int (*conn_schedule)(int af, struct sk_buff *skb, |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 491 | struct ip_vs_proto_data *pd, |
Jesper Dangaard Brouer | d4383f0 | 2012-09-26 14:07:17 +0200 | [diff] [blame] | 492 | int *verdict, struct ip_vs_conn **cpp, |
| 493 | struct ip_vs_iphdr *iph); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | |
| 495 | struct ip_vs_conn * |
Julius Volz | 51ef348 | 2008-09-02 15:55:40 +0200 | [diff] [blame] | 496 | (*conn_in_get)(int af, |
| 497 | const struct sk_buff *skb, |
Alex Gartrell | 802c41a | 2015-08-26 09:40:32 -0700 | [diff] [blame] | 498 | const struct ip_vs_iphdr *iph); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | |
| 500 | struct ip_vs_conn * |
Julius Volz | 51ef348 | 2008-09-02 15:55:40 +0200 | [diff] [blame] | 501 | (*conn_out_get)(int af, |
| 502 | const struct sk_buff *skb, |
Alex Gartrell | 802c41a | 2015-08-26 09:40:32 -0700 | [diff] [blame] | 503 | const struct ip_vs_iphdr *iph); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | |
Jesper Dangaard Brouer | d4383f0 | 2012-09-26 14:07:17 +0200 | [diff] [blame] | 505 | int (*snat_handler)(struct sk_buff *skb, struct ip_vs_protocol *pp, |
| 506 | struct ip_vs_conn *cp, struct ip_vs_iphdr *iph); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | |
Jesper Dangaard Brouer | d4383f0 | 2012-09-26 14:07:17 +0200 | [diff] [blame] | 508 | int (*dnat_handler)(struct sk_buff *skb, struct ip_vs_protocol *pp, |
| 509 | struct ip_vs_conn *cp, struct ip_vs_iphdr *iph); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | |
Julius Volz | 51ef348 | 2008-09-02 15:55:40 +0200 | [diff] [blame] | 511 | int (*csum_check)(int af, struct sk_buff *skb, |
| 512 | struct ip_vs_protocol *pp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | |
| 514 | const char *(*state_name)(int state); |
| 515 | |
Simon Horman | 4a516f1 | 2011-09-16 14:11:49 +0900 | [diff] [blame] | 516 | void (*state_transition)(struct ip_vs_conn *cp, int direction, |
| 517 | const struct sk_buff *skb, |
| 518 | struct ip_vs_proto_data *pd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | |
Eric W. Biederman | 1964891 | 2015-09-21 13:02:29 -0500 | [diff] [blame] | 520 | int (*register_app)(struct netns_ipvs *ipvs, struct ip_vs_app *inc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | |
Eric W. Biederman | 1964891 | 2015-09-21 13:02:29 -0500 | [diff] [blame] | 522 | void (*unregister_app)(struct netns_ipvs *ipvs, struct ip_vs_app *inc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | |
| 524 | int (*app_conn_bind)(struct ip_vs_conn *cp); |
| 525 | |
Julian Anastasov | 0d79641 | 2010-10-17 16:46:17 +0300 | [diff] [blame] | 526 | void (*debug_packet)(int af, struct ip_vs_protocol *pp, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | const struct sk_buff *skb, |
| 528 | int offset, |
| 529 | const char *msg); |
| 530 | |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 531 | void (*timeout_change)(struct ip_vs_proto_data *pd, int flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | }; |
| 533 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 534 | /* protocol data per netns */ |
Hans Schillstrom | 252c641 | 2011-01-03 14:44:46 +0100 | [diff] [blame] | 535 | struct ip_vs_proto_data { |
| 536 | struct ip_vs_proto_data *next; |
| 537 | struct ip_vs_protocol *pp; |
| 538 | int *timeout_table; /* protocol timeout table */ |
| 539 | atomic_t appcnt; /* counter of proto app incs. */ |
| 540 | struct tcp_states_t *tcp_state_table; |
| 541 | }; |
| 542 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 543 | struct ip_vs_protocol *ip_vs_proto_get(unsigned short proto); |
Eric W. Biederman | 18d6ade | 2015-09-21 13:02:01 -0500 | [diff] [blame] | 544 | struct ip_vs_proto_data *ip_vs_proto_data_get(struct netns_ipvs *ipvs, |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 545 | unsigned short proto); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | |
Simon Horman | f11017e | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 547 | struct ip_vs_conn_param { |
Eric W. Biederman | e64e2b4 | 2015-09-21 13:01:42 -0500 | [diff] [blame] | 548 | struct netns_ipvs *ipvs; |
Simon Horman | f11017e | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 549 | const union nf_inet_addr *caddr; |
| 550 | const union nf_inet_addr *vaddr; |
| 551 | __be16 cport; |
| 552 | __be16 vport; |
| 553 | __u16 protocol; |
| 554 | u16 af; |
Simon Horman | 8599928 | 2010-08-22 21:37:53 +0900 | [diff] [blame] | 555 | |
| 556 | const struct ip_vs_pe *pe; |
| 557 | char *pe_data; |
| 558 | __u8 pe_data_len; |
Simon Horman | f11017e | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 559 | }; |
| 560 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 561 | /* IP_VS structure allocated for each dynamically scheduled connection */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | struct ip_vs_conn { |
Changli Gao | 731109e | 2011-02-19 18:05:08 +0800 | [diff] [blame] | 563 | struct hlist_node c_list; /* hashed list heads */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | /* Protocol, addresses and port numbers */ |
Hans Schillstrom | 6e67e58 | 2011-01-03 14:44:57 +0100 | [diff] [blame] | 565 | __be16 cport; |
Hans Schillstrom | 6e67e58 | 2011-01-03 14:44:57 +0100 | [diff] [blame] | 566 | __be16 dport; |
Julian Anastasov | 1845ed0 | 2013-03-21 11:58:11 +0200 | [diff] [blame] | 567 | __be16 vport; |
| 568 | u16 af; /* address family */ |
Hans Schillstrom | 6e67e58 | 2011-01-03 14:44:57 +0100 | [diff] [blame] | 569 | union nf_inet_addr caddr; /* client address */ |
| 570 | union nf_inet_addr vaddr; /* virtual address */ |
| 571 | union nf_inet_addr daddr; /* destination address */ |
| 572 | volatile __u32 flags; /* status flags */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | __u16 protocol; /* Which protocol (TCP/UDP) */ |
Alex Gartrell | ba38528 | 2014-09-09 16:40:23 -0700 | [diff] [blame] | 574 | __u16 daf; /* Address family of the dest */ |
Eric W. Biederman | 58dbc6f | 2015-09-21 13:01:41 -0500 | [diff] [blame] | 575 | struct netns_ipvs *ipvs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | |
| 577 | /* counter and timer */ |
| 578 | atomic_t refcnt; /* reference count */ |
| 579 | struct timer_list timer; /* Expiration timer */ |
| 580 | volatile unsigned long timeout; /* timeout */ |
| 581 | |
| 582 | /* Flags and state transition */ |
| 583 | spinlock_t lock; /* lock for state transition */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | volatile __u16 state; /* state info */ |
Rumen G. Bogdanovski | efac527 | 2007-11-07 02:36:55 -0800 | [diff] [blame] | 585 | volatile __u16 old_state; /* old state, to be used for |
| 586 | * state transition triggerd |
| 587 | * synchronization |
| 588 | */ |
Julian Anastasov | 1845ed0 | 2013-03-21 11:58:11 +0200 | [diff] [blame] | 589 | __u32 fwmark; /* Fire wall mark from skb */ |
Julian Anastasov | 749c42b | 2012-04-24 23:46:40 +0300 | [diff] [blame] | 590 | unsigned long sync_endtime; /* jiffies + sent_retries */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | |
| 592 | /* Control members */ |
| 593 | struct ip_vs_conn *control; /* Master control connection */ |
| 594 | atomic_t n_control; /* Number of controlled ones */ |
| 595 | struct ip_vs_dest *dest; /* real server */ |
| 596 | atomic_t in_pkts; /* incoming packet counter */ |
| 597 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 598 | /* Packet transmitter for different forwarding methods. If it |
| 599 | * mangles the packet, it must return NF_DROP or better NF_STOLEN, |
| 600 | * otherwise this must be changed to a sk_buff **. |
| 601 | * NF_ACCEPT can be returned when destination is local. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | */ |
| 603 | int (*packet_xmit)(struct sk_buff *skb, struct ip_vs_conn *cp, |
Jesper Dangaard Brouer | d4383f0 | 2012-09-26 14:07:17 +0200 | [diff] [blame] | 604 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | |
| 606 | /* Note: we can group the following members into a structure, |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 607 | * in order to save more space, and the following members are |
| 608 | * only used in VS/NAT anyway |
| 609 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | struct ip_vs_app *app; /* bound ip_vs_app object */ |
| 611 | void *app_data; /* Application private data */ |
| 612 | struct ip_vs_seq in_seq; /* incoming seq. struct */ |
| 613 | struct ip_vs_seq out_seq; /* outgoing seq. struct */ |
Simon Horman | 8599928 | 2010-08-22 21:37:53 +0900 | [diff] [blame] | 614 | |
Simon Horman | e9e5eee | 2010-11-08 20:05:57 +0900 | [diff] [blame] | 615 | const struct ip_vs_pe *pe; |
Simon Horman | 8599928 | 2010-08-22 21:37:53 +0900 | [diff] [blame] | 616 | char *pe_data; |
| 617 | __u8 pe_data_len; |
Julian Anastasov | 088339a | 2013-03-21 11:58:10 +0200 | [diff] [blame] | 618 | |
| 619 | struct rcu_head rcu_head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | }; |
| 621 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 622 | /* Extended internal versions of struct ip_vs_service_user and ip_vs_dest_user |
| 623 | * for IPv6 support. |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 624 | * |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 625 | * We need these to conveniently pass around service and destination |
| 626 | * options, but unfortunately, we also need to keep the old definitions to |
| 627 | * maintain userspace backwards compatibility for the setsockopt interface. |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 628 | */ |
| 629 | struct ip_vs_service_user_kern { |
| 630 | /* virtual service addresses */ |
| 631 | u16 af; |
| 632 | u16 protocol; |
| 633 | union nf_inet_addr addr; /* virtual ip address */ |
Julian Anastasov | 0a92586 | 2013-04-17 23:50:49 +0300 | [diff] [blame] | 634 | __be16 port; |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 635 | u32 fwmark; /* firwall mark of service */ |
| 636 | |
| 637 | /* virtual service options */ |
| 638 | char *sched_name; |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 639 | char *pe_name; |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 640 | unsigned int flags; /* virtual service flags */ |
| 641 | unsigned int timeout; /* persistent timeout in sec */ |
Julian Anastasov | 0a92586 | 2013-04-17 23:50:49 +0300 | [diff] [blame] | 642 | __be32 netmask; /* persistent netmask or plen */ |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 643 | }; |
| 644 | |
| 645 | |
| 646 | struct ip_vs_dest_user_kern { |
| 647 | /* destination server address */ |
| 648 | union nf_inet_addr addr; |
Julian Anastasov | 0a92586 | 2013-04-17 23:50:49 +0300 | [diff] [blame] | 649 | __be16 port; |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 650 | |
| 651 | /* real server options */ |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 652 | unsigned int conn_flags; /* connection flags */ |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 653 | int weight; /* destination weight */ |
| 654 | |
| 655 | /* thresholds for active connections */ |
| 656 | u32 u_threshold; /* upper threshold */ |
| 657 | u32 l_threshold; /* lower threshold */ |
Alex Gartrell | 6cff339 | 2014-09-09 16:40:20 -0700 | [diff] [blame] | 658 | |
| 659 | /* Address family of addr */ |
| 660 | u16 af; |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 661 | }; |
| 662 | |
| 663 | |
| 664 | /* |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 665 | * The information about the virtual service offered to the net and the |
| 666 | * forwarding entries. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | */ |
| 668 | struct ip_vs_service { |
Julian Anastasov | ceec4c3 | 2013-03-22 11:46:53 +0200 | [diff] [blame] | 669 | struct hlist_node s_list; /* for normal service table */ |
| 670 | struct hlist_node f_list; /* for fwmark-based service table */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | atomic_t refcnt; /* reference counter */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | |
Julius Volz | e7ade46 | 2008-09-02 15:55:33 +0200 | [diff] [blame] | 673 | u16 af; /* address family */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | __u16 protocol; /* which protocol (TCP/UDP) */ |
Julius Volz | e7ade46 | 2008-09-02 15:55:33 +0200 | [diff] [blame] | 675 | union nf_inet_addr addr; /* IP address for virtual service */ |
Al Viro | 014d730 | 2006-09-28 14:29:52 -0700 | [diff] [blame] | 676 | __be16 port; /* port number for the service */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | __u32 fwmark; /* firewall mark of the service */ |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 678 | unsigned int flags; /* service status flags */ |
| 679 | unsigned int timeout; /* persistent timeout in ticks */ |
Julian Anastasov | 0a92586 | 2013-04-17 23:50:49 +0300 | [diff] [blame] | 680 | __be32 netmask; /* grouping granularity, mask/plen */ |
Eric W. Biederman | 3109d2f | 2015-09-21 13:01:44 -0500 | [diff] [blame] | 681 | struct netns_ipvs *ipvs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | |
| 683 | struct list_head destinations; /* real server d-linked list */ |
| 684 | __u32 num_dests; /* number of servers */ |
| 685 | struct ip_vs_stats stats; /* statistics for the service */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | |
| 687 | /* for scheduling */ |
Julian Anastasov | ceec4c3 | 2013-03-22 11:46:53 +0200 | [diff] [blame] | 688 | struct ip_vs_scheduler __rcu *scheduler; /* bound scheduler object */ |
Julian Anastasov | ba3a3ce | 2013-03-22 11:46:51 +0200 | [diff] [blame] | 689 | spinlock_t sched_lock; /* lock sched_data */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | void *sched_data; /* scheduler application data */ |
Simon Horman | 8599928 | 2010-08-22 21:37:53 +0900 | [diff] [blame] | 691 | |
| 692 | /* alternate persistence engine */ |
Julian Anastasov | ceec4c3 | 2013-03-22 11:46:53 +0200 | [diff] [blame] | 693 | struct ip_vs_pe __rcu *pe; |
| 694 | |
| 695 | struct rcu_head rcu_head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | }; |
| 697 | |
Julian Anastasov | 026ace0 | 2013-03-21 11:58:06 +0200 | [diff] [blame] | 698 | /* Information for cached dst */ |
| 699 | struct ip_vs_dest_dst { |
| 700 | struct dst_entry *dst_cache; /* destination cache entry */ |
| 701 | u32 dst_cookie; |
| 702 | union nf_inet_addr dst_saddr; |
| 703 | struct rcu_head rcu_head; |
| 704 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 706 | /* The real server destination forwarding entry with ip address, port number, |
| 707 | * and so on. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | */ |
| 709 | struct ip_vs_dest { |
| 710 | struct list_head n_list; /* for the dests in the service */ |
Julian Anastasov | 276472e | 2013-03-21 11:58:08 +0200 | [diff] [blame] | 711 | struct hlist_node d_list; /* for table with all the dests */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | |
Julius Volz | e7ade46 | 2008-09-02 15:55:33 +0200 | [diff] [blame] | 713 | u16 af; /* address family */ |
Al Viro | 014d730 | 2006-09-28 14:29:52 -0700 | [diff] [blame] | 714 | __be16 port; /* port number of the server */ |
Hans Schillstrom | f2431e6 | 2011-01-03 14:45:00 +0100 | [diff] [blame] | 715 | union nf_inet_addr addr; /* IP address of the server */ |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 716 | volatile unsigned int flags; /* dest status flags */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | atomic_t conn_flags; /* flags to copy to conn */ |
| 718 | atomic_t weight; /* server weight */ |
| 719 | |
| 720 | atomic_t refcnt; /* reference counter */ |
| 721 | struct ip_vs_stats stats; /* statistics */ |
Julian Anastasov | bcbde4c | 2013-09-12 11:21:07 +0300 | [diff] [blame] | 722 | unsigned long idle_start; /* start time, jiffies */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | |
| 724 | /* connection counters and thresholds */ |
| 725 | atomic_t activeconns; /* active connections */ |
| 726 | atomic_t inactconns; /* inactive connections */ |
| 727 | atomic_t persistconns; /* persistent connections */ |
| 728 | __u32 u_threshold; /* upper threshold */ |
| 729 | __u32 l_threshold; /* lower threshold */ |
| 730 | |
| 731 | /* for destination cache */ |
| 732 | spinlock_t dst_lock; /* lock of dst_cache */ |
Julian Anastasov | 026ace0 | 2013-03-21 11:58:06 +0200 | [diff] [blame] | 733 | struct ip_vs_dest_dst __rcu *dest_dst; /* cached dst info */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | |
| 735 | /* for virtual service */ |
Julian Anastasov | bcbde4c | 2013-09-12 11:21:07 +0300 | [diff] [blame] | 736 | struct ip_vs_service __rcu *svc; /* service it belongs to */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | __u16 protocol; /* which protocol (TCP/UDP) */ |
Al Viro | 014d730 | 2006-09-28 14:29:52 -0700 | [diff] [blame] | 738 | __be16 vport; /* virtual port number */ |
Hans Schillstrom | f2431e6 | 2011-01-03 14:45:00 +0100 | [diff] [blame] | 739 | union nf_inet_addr vaddr; /* virtual IP address */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | __u32 vfwmark; /* firewall mark of service */ |
Julian Anastasov | 276472e | 2013-03-21 11:58:08 +0200 | [diff] [blame] | 741 | |
Julian Anastasov | 578bc3e | 2013-03-22 11:46:49 +0200 | [diff] [blame] | 742 | struct list_head t_list; /* in dest_trash */ |
Julian Anastasov | 276472e | 2013-03-21 11:58:08 +0200 | [diff] [blame] | 743 | unsigned int in_rs_table:1; /* we are in rs_table */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | }; |
| 745 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 746 | /* The scheduler object */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | struct ip_vs_scheduler { |
| 748 | struct list_head n_list; /* d-linked list head */ |
| 749 | char *name; /* scheduler name */ |
| 750 | atomic_t refcnt; /* reference counter */ |
| 751 | struct module *module; /* THIS_MODULE/NULL */ |
| 752 | |
| 753 | /* scheduler initializing service */ |
| 754 | int (*init_service)(struct ip_vs_service *svc); |
| 755 | /* scheduling service finish */ |
Julian Anastasov | ed3ffc4 | 2013-03-22 11:46:50 +0200 | [diff] [blame] | 756 | void (*done_service)(struct ip_vs_service *svc); |
Julian Anastasov | 6b6df46 | 2013-03-22 11:46:37 +0200 | [diff] [blame] | 757 | /* dest is linked */ |
| 758 | int (*add_dest)(struct ip_vs_service *svc, struct ip_vs_dest *dest); |
| 759 | /* dest is unlinked */ |
| 760 | int (*del_dest)(struct ip_vs_service *svc, struct ip_vs_dest *dest); |
| 761 | /* dest is updated */ |
| 762 | int (*upd_dest)(struct ip_vs_service *svc, struct ip_vs_dest *dest); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | |
| 764 | /* selecting a server from the given service */ |
| 765 | struct ip_vs_dest* (*schedule)(struct ip_vs_service *svc, |
Julian Anastasov | bba54de | 2013-06-16 09:09:36 +0300 | [diff] [blame] | 766 | const struct sk_buff *skb, |
| 767 | struct ip_vs_iphdr *iph); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | }; |
| 769 | |
Simon Horman | 8599928 | 2010-08-22 21:37:53 +0900 | [diff] [blame] | 770 | /* The persistence engine object */ |
| 771 | struct ip_vs_pe { |
| 772 | struct list_head n_list; /* d-linked list head */ |
| 773 | char *name; /* scheduler name */ |
| 774 | atomic_t refcnt; /* reference counter */ |
| 775 | struct module *module; /* THIS_MODULE/NULL */ |
| 776 | |
| 777 | /* get the connection template, if any */ |
| 778 | int (*fill_param)(struct ip_vs_conn_param *p, struct sk_buff *skb); |
| 779 | bool (*ct_match)(const struct ip_vs_conn_param *p, |
| 780 | struct ip_vs_conn *ct); |
| 781 | u32 (*hashkey_raw)(const struct ip_vs_conn_param *p, u32 initval, |
| 782 | bool inverse); |
Simon Horman | a3c918a | 2010-08-22 21:37:53 +0900 | [diff] [blame] | 783 | int (*show_pe_data)(const struct ip_vs_conn *cp, char *buf); |
Simon Horman | 8599928 | 2010-08-22 21:37:53 +0900 | [diff] [blame] | 784 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 786 | /* The application module object (a.k.a. app incarnation) */ |
Eric Dumazet | fd2c3ef | 2009-11-03 03:26:03 +0000 | [diff] [blame] | 787 | struct ip_vs_app { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | struct list_head a_list; /* member in app list */ |
| 789 | int type; /* IP_VS_APP_TYPE_xxx */ |
| 790 | char *name; /* application module name */ |
| 791 | __u16 protocol; |
| 792 | struct module *module; /* THIS_MODULE/NULL */ |
| 793 | struct list_head incs_list; /* list of incarnations */ |
| 794 | |
| 795 | /* members for application incarnations */ |
| 796 | struct list_head p_list; /* member in proto app list */ |
| 797 | struct ip_vs_app *app; /* its real application */ |
Al Viro | 014d730 | 2006-09-28 14:29:52 -0700 | [diff] [blame] | 798 | __be16 port; /* port number in net order */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | atomic_t usecnt; /* usage counter */ |
Julian Anastasov | 363c97d | 2013-03-21 11:58:07 +0200 | [diff] [blame] | 800 | struct rcu_head rcu_head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 802 | /* output hook: Process packet in inout direction, diff set for TCP. |
Julian Anastasov | 8b27b10 | 2010-10-17 16:17:20 +0300 | [diff] [blame] | 803 | * Return: 0=Error, 1=Payload Not Mangled/Mangled but checksum is ok, |
| 804 | * 2=Mangled but checksum was not updated |
| 805 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | int (*pkt_out)(struct ip_vs_app *, struct ip_vs_conn *, |
Herbert Xu | 3db05fe | 2007-10-15 00:53:15 -0700 | [diff] [blame] | 807 | struct sk_buff *, int *diff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 809 | /* input hook: Process packet in outin direction, diff set for TCP. |
Julian Anastasov | 8b27b10 | 2010-10-17 16:17:20 +0300 | [diff] [blame] | 810 | * Return: 0=Error, 1=Payload Not Mangled/Mangled but checksum is ok, |
| 811 | * 2=Mangled but checksum was not updated |
| 812 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | int (*pkt_in)(struct ip_vs_app *, struct ip_vs_conn *, |
Herbert Xu | 3db05fe | 2007-10-15 00:53:15 -0700 | [diff] [blame] | 814 | struct sk_buff *, int *diff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 815 | |
| 816 | /* ip_vs_app initializer */ |
| 817 | int (*init_conn)(struct ip_vs_app *, struct ip_vs_conn *); |
| 818 | |
| 819 | /* ip_vs_app finish */ |
| 820 | int (*done_conn)(struct ip_vs_app *, struct ip_vs_conn *); |
| 821 | |
| 822 | |
| 823 | /* not used now */ |
| 824 | int (*bind_conn)(struct ip_vs_app *, struct ip_vs_conn *, |
| 825 | struct ip_vs_protocol *); |
| 826 | |
| 827 | void (*unbind_conn)(struct ip_vs_app *, struct ip_vs_conn *); |
| 828 | |
| 829 | int * timeout_table; |
| 830 | int * timeouts; |
| 831 | int timeouts_size; |
| 832 | |
| 833 | int (*conn_schedule)(struct sk_buff *skb, struct ip_vs_app *app, |
| 834 | int *verdict, struct ip_vs_conn **cpp); |
| 835 | |
| 836 | struct ip_vs_conn * |
| 837 | (*conn_in_get)(const struct sk_buff *skb, struct ip_vs_app *app, |
Jesper Dangaard Brouer | d4383f0 | 2012-09-26 14:07:17 +0200 | [diff] [blame] | 838 | const struct iphdr *iph, int inverse); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | |
| 840 | struct ip_vs_conn * |
| 841 | (*conn_out_get)(const struct sk_buff *skb, struct ip_vs_app *app, |
Jesper Dangaard Brouer | d4383f0 | 2012-09-26 14:07:17 +0200 | [diff] [blame] | 842 | const struct iphdr *iph, int inverse); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | |
| 844 | int (*state_transition)(struct ip_vs_conn *cp, int direction, |
| 845 | const struct sk_buff *skb, |
| 846 | struct ip_vs_app *app); |
| 847 | |
| 848 | void (*timeout_change)(struct ip_vs_app *app, int flags); |
| 849 | }; |
| 850 | |
Pablo Neira Ayuso | f73181c | 2012-05-08 19:40:30 +0200 | [diff] [blame] | 851 | struct ipvs_master_sync_state { |
| 852 | struct list_head sync_queue; |
| 853 | struct ip_vs_sync_buff *sync_buff; |
Zhang Yanfei | 0799567 | 2013-04-29 11:55:10 -0700 | [diff] [blame] | 854 | unsigned long sync_queue_len; |
Pablo Neira Ayuso | f73181c | 2012-05-08 19:40:30 +0200 | [diff] [blame] | 855 | unsigned int sync_queue_delay; |
| 856 | struct task_struct *master_thread; |
| 857 | struct delayed_work master_wakeup_work; |
| 858 | struct netns_ipvs *ipvs; |
| 859 | }; |
| 860 | |
Julian Anastasov | 578bc3e | 2013-03-22 11:46:49 +0200 | [diff] [blame] | 861 | /* How much time to keep dests in trash */ |
| 862 | #define IP_VS_DEST_TRASH_PERIOD (120 * HZ) |
| 863 | |
Julian Anastasov | e4ff675 | 2015-07-26 15:03:27 +0300 | [diff] [blame] | 864 | struct ipvs_sync_daemon_cfg { |
Julian Anastasov | d332881 | 2015-07-26 15:03:28 +0300 | [diff] [blame] | 865 | union nf_inet_addr mcast_group; |
Julian Anastasov | e4ff675 | 2015-07-26 15:03:27 +0300 | [diff] [blame] | 866 | int syncid; |
| 867 | u16 sync_maxlen; |
Julian Anastasov | d332881 | 2015-07-26 15:03:28 +0300 | [diff] [blame] | 868 | u16 mcast_port; |
| 869 | u8 mcast_af; |
| 870 | u8 mcast_ttl; |
Julian Anastasov | e4ff675 | 2015-07-26 15:03:27 +0300 | [diff] [blame] | 871 | /* multicast interface name */ |
| 872 | char mcast_ifn[IP_VS_IFNAME_MAXLEN]; |
| 873 | }; |
| 874 | |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 875 | /* IPVS in network namespace */ |
| 876 | struct netns_ipvs { |
| 877 | int gen; /* Generation */ |
Hans Schillstrom | 7a4f076 | 2011-05-03 22:09:31 +0200 | [diff] [blame] | 878 | int enable; /* enable like nf_hooks do */ |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 879 | /* Hash table: for real service lookups */ |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 880 | #define IP_VS_RTAB_BITS 4 |
| 881 | #define IP_VS_RTAB_SIZE (1 << IP_VS_RTAB_BITS) |
| 882 | #define IP_VS_RTAB_MASK (IP_VS_RTAB_SIZE - 1) |
| 883 | |
Julian Anastasov | 276472e | 2013-03-21 11:58:08 +0200 | [diff] [blame] | 884 | struct hlist_head rs_table[IP_VS_RTAB_SIZE]; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 885 | /* ip_vs_app */ |
| 886 | struct list_head app_list; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 887 | /* ip_vs_proto */ |
| 888 | #define IP_VS_PROTO_TAB_SIZE 32 /* must be power of 2 */ |
| 889 | struct ip_vs_proto_data *proto_data_table[IP_VS_PROTO_TAB_SIZE]; |
| 890 | /* ip_vs_proto_tcp */ |
| 891 | #ifdef CONFIG_IP_VS_PROTO_TCP |
| 892 | #define TCP_APP_TAB_BITS 4 |
| 893 | #define TCP_APP_TAB_SIZE (1 << TCP_APP_TAB_BITS) |
| 894 | #define TCP_APP_TAB_MASK (TCP_APP_TAB_SIZE - 1) |
| 895 | struct list_head tcp_apps[TCP_APP_TAB_SIZE]; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 896 | #endif |
| 897 | /* ip_vs_proto_udp */ |
| 898 | #ifdef CONFIG_IP_VS_PROTO_UDP |
| 899 | #define UDP_APP_TAB_BITS 4 |
| 900 | #define UDP_APP_TAB_SIZE (1 << UDP_APP_TAB_BITS) |
| 901 | #define UDP_APP_TAB_MASK (UDP_APP_TAB_SIZE - 1) |
| 902 | struct list_head udp_apps[UDP_APP_TAB_SIZE]; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 903 | #endif |
| 904 | /* ip_vs_proto_sctp */ |
| 905 | #ifdef CONFIG_IP_VS_PROTO_SCTP |
| 906 | #define SCTP_APP_TAB_BITS 4 |
| 907 | #define SCTP_APP_TAB_SIZE (1 << SCTP_APP_TAB_BITS) |
| 908 | #define SCTP_APP_TAB_MASK (SCTP_APP_TAB_SIZE - 1) |
| 909 | /* Hash table for SCTP application incarnations */ |
| 910 | struct list_head sctp_apps[SCTP_APP_TAB_SIZE]; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 911 | #endif |
| 912 | /* ip_vs_conn */ |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 913 | atomic_t conn_count; /* connection counter */ |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 914 | |
| 915 | /* ip_vs_ctl */ |
Julian Anastasov | 2a0751a | 2011-03-04 12:20:35 +0200 | [diff] [blame] | 916 | struct ip_vs_stats tot_stats; /* Statistics & est. */ |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 917 | |
| 918 | int num_services; /* no of virtual services */ |
Simon Horman | f2247fb | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 919 | |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 920 | /* Trash for destinations */ |
| 921 | struct list_head dest_trash; |
Julian Anastasov | 578bc3e | 2013-03-22 11:46:49 +0200 | [diff] [blame] | 922 | spinlock_t dest_trash_lock; |
| 923 | struct timer_list dest_trash_timer; /* expiration timer */ |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 924 | /* Service counters */ |
| 925 | atomic_t ftpsvc_counter; |
| 926 | atomic_t nullsvc_counter; |
| 927 | |
Simon Horman | f2247fb | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 928 | #ifdef CONFIG_SYSCTL |
| 929 | /* 1/rate drop and drop-entry variables */ |
| 930 | struct delayed_work defense_work; /* Work handler */ |
| 931 | int drop_rate; |
| 932 | int drop_counter; |
| 933 | atomic_t dropentry; |
| 934 | /* locks in ctl.c */ |
| 935 | spinlock_t dropentry_lock; /* drop entry handling */ |
| 936 | spinlock_t droppacket_lock; /* drop packet handling */ |
| 937 | spinlock_t securetcp_lock; /* state and timeout tables */ |
| 938 | |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 939 | /* sys-ctl struct */ |
| 940 | struct ctl_table_header *sysctl_hdr; |
| 941 | struct ctl_table *sysctl_tbl; |
Simon Horman | f2247fb | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 942 | #endif |
| 943 | |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 944 | /* sysctl variables */ |
| 945 | int sysctl_amemthresh; |
| 946 | int sysctl_am_droprate; |
| 947 | int sysctl_drop_entry; |
| 948 | int sysctl_drop_packet; |
| 949 | int sysctl_secure_tcp; |
| 950 | #ifdef CONFIG_IP_VS_NFCT |
| 951 | int sysctl_conntrack; |
| 952 | #endif |
| 953 | int sysctl_snat_reroute; |
| 954 | int sysctl_sync_ver; |
Pablo Neira Ayuso | f73181c | 2012-05-08 19:40:30 +0200 | [diff] [blame] | 955 | int sysctl_sync_ports; |
Julian Anastasov | 4d0c875 | 2013-06-24 22:44:41 +0300 | [diff] [blame] | 956 | int sysctl_sync_persist_mode; |
Zhang Yanfei | 0799567 | 2013-04-29 11:55:10 -0700 | [diff] [blame] | 957 | unsigned long sysctl_sync_qlen_max; |
Pablo Neira Ayuso | 1c003b1 | 2012-05-08 19:39:49 +0200 | [diff] [blame] | 958 | int sysctl_sync_sock_size; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 959 | int sysctl_cache_bypass; |
| 960 | int sysctl_expire_nodest_conn; |
Alexander Frolkin | c6c96c1 | 2013-06-13 08:56:15 +0100 | [diff] [blame] | 961 | int sysctl_sloppy_tcp; |
| 962 | int sysctl_sloppy_sctp; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 963 | int sysctl_expire_quiescent_template; |
| 964 | int sysctl_sync_threshold[2]; |
Julian Anastasov | 749c42b | 2012-04-24 23:46:40 +0300 | [diff] [blame] | 965 | unsigned int sysctl_sync_refresh_period; |
| 966 | int sysctl_sync_retries; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 967 | int sysctl_nat_icmp_send; |
Julian Anastasov | 3654e61 | 2012-07-20 11:59:53 +0300 | [diff] [blame] | 968 | int sysctl_pmtu_disc; |
Julian Anastasov | 0c12582 | 2013-03-09 23:25:04 +0200 | [diff] [blame] | 969 | int sysctl_backup_only; |
Marcelo Ricardo Leitner | d752c36 | 2015-02-23 15:02:34 -0300 | [diff] [blame] | 970 | int sysctl_conn_reuse_mode; |
Alex Gartrell | 94485fe | 2015-08-26 09:40:34 -0700 | [diff] [blame] | 971 | int sysctl_schedule_icmp; |
Alex Gartrell | 4e47809 | 2015-09-14 23:23:05 -0700 | [diff] [blame] | 972 | int sysctl_ignore_tunneled; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 973 | |
| 974 | /* ip_vs_lblc */ |
| 975 | int sysctl_lblc_expiration; |
| 976 | struct ctl_table_header *lblc_ctl_header; |
| 977 | struct ctl_table *lblc_ctl_table; |
| 978 | /* ip_vs_lblcr */ |
| 979 | int sysctl_lblcr_expiration; |
| 980 | struct ctl_table_header *lblcr_ctl_header; |
| 981 | struct ctl_table *lblcr_ctl_table; |
| 982 | /* ip_vs_est */ |
| 983 | struct list_head est_list; /* estimator list */ |
| 984 | spinlock_t est_lock; |
| 985 | struct timer_list est_timer; /* Estimation timer */ |
| 986 | /* ip_vs_sync */ |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 987 | spinlock_t sync_lock; |
Pablo Neira Ayuso | f73181c | 2012-05-08 19:40:30 +0200 | [diff] [blame] | 988 | struct ipvs_master_sync_state *ms; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 989 | spinlock_t sync_buff_lock; |
Pablo Neira Ayuso | f73181c | 2012-05-08 19:40:30 +0200 | [diff] [blame] | 990 | struct task_struct **backup_threads; |
| 991 | int threads_mask; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 992 | volatile int sync_state; |
Hans Schillstrom | ae1d48b | 2011-10-11 10:54:35 +0900 | [diff] [blame] | 993 | struct mutex sync_mutex; |
Julian Anastasov | e4ff675 | 2015-07-26 15:03:27 +0300 | [diff] [blame] | 994 | struct ipvs_sync_daemon_cfg mcfg; /* Master Configuration */ |
| 995 | struct ipvs_sync_daemon_cfg bcfg; /* Backup Configuration */ |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 996 | /* net name space ptr */ |
| 997 | struct net *net; /* Needed by timer routines */ |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 998 | /* Number of heterogeneous destinations, needed becaus heterogeneous |
| 999 | * are not supported when synchronization is enabled. |
| 1000 | */ |
Alex Gartrell | 391f503d | 2014-09-09 16:40:24 -0700 | [diff] [blame] | 1001 | unsigned int mixed_address_family_dests; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 1002 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1003 | |
Simon Horman | 59e0350 | 2011-02-04 18:33:01 +0900 | [diff] [blame] | 1004 | #define DEFAULT_SYNC_THRESHOLD 3 |
| 1005 | #define DEFAULT_SYNC_PERIOD 50 |
Simon Horman | 7532e8d | 2011-02-04 18:33:01 +0900 | [diff] [blame] | 1006 | #define DEFAULT_SYNC_VER 1 |
Alexander Frolkin | c6c96c1 | 2013-06-13 08:56:15 +0100 | [diff] [blame] | 1007 | #define DEFAULT_SLOPPY_TCP 0 |
| 1008 | #define DEFAULT_SLOPPY_SCTP 0 |
Julian Anastasov | 749c42b | 2012-04-24 23:46:40 +0300 | [diff] [blame] | 1009 | #define DEFAULT_SYNC_REFRESH_PERIOD (0U * HZ) |
| 1010 | #define DEFAULT_SYNC_RETRIES 0 |
Pablo Neira Ayuso | 1c003b1 | 2012-05-08 19:39:49 +0200 | [diff] [blame] | 1011 | #define IPVS_SYNC_WAKEUP_RATE 8 |
| 1012 | #define IPVS_SYNC_QLEN_MAX (IPVS_SYNC_WAKEUP_RATE * 4) |
| 1013 | #define IPVS_SYNC_SEND_DELAY (HZ / 50) |
| 1014 | #define IPVS_SYNC_CHECK_PERIOD HZ |
Julian Anastasov | 749c42b | 2012-04-24 23:46:40 +0300 | [diff] [blame] | 1015 | #define IPVS_SYNC_FLUSH_TIME (HZ * 2) |
Pablo Neira Ayuso | f73181c | 2012-05-08 19:40:30 +0200 | [diff] [blame] | 1016 | #define IPVS_SYNC_PORTS_MAX (1 << 6) |
Simon Horman | 59e0350 | 2011-02-04 18:33:01 +0900 | [diff] [blame] | 1017 | |
| 1018 | #ifdef CONFIG_SYSCTL |
| 1019 | |
| 1020 | static inline int sysctl_sync_threshold(struct netns_ipvs *ipvs) |
| 1021 | { |
| 1022 | return ipvs->sysctl_sync_threshold[0]; |
| 1023 | } |
| 1024 | |
| 1025 | static inline int sysctl_sync_period(struct netns_ipvs *ipvs) |
| 1026 | { |
Julian Anastasov | 749c42b | 2012-04-24 23:46:40 +0300 | [diff] [blame] | 1027 | return ACCESS_ONCE(ipvs->sysctl_sync_threshold[1]); |
| 1028 | } |
| 1029 | |
| 1030 | static inline unsigned int sysctl_sync_refresh_period(struct netns_ipvs *ipvs) |
| 1031 | { |
| 1032 | return ACCESS_ONCE(ipvs->sysctl_sync_refresh_period); |
| 1033 | } |
| 1034 | |
| 1035 | static inline int sysctl_sync_retries(struct netns_ipvs *ipvs) |
| 1036 | { |
| 1037 | return ipvs->sysctl_sync_retries; |
Simon Horman | 59e0350 | 2011-02-04 18:33:01 +0900 | [diff] [blame] | 1038 | } |
| 1039 | |
Simon Horman | 7532e8d | 2011-02-04 18:33:01 +0900 | [diff] [blame] | 1040 | static inline int sysctl_sync_ver(struct netns_ipvs *ipvs) |
| 1041 | { |
| 1042 | return ipvs->sysctl_sync_ver; |
| 1043 | } |
| 1044 | |
Alexander Frolkin | c6c96c1 | 2013-06-13 08:56:15 +0100 | [diff] [blame] | 1045 | static inline int sysctl_sloppy_tcp(struct netns_ipvs *ipvs) |
| 1046 | { |
| 1047 | return ipvs->sysctl_sloppy_tcp; |
| 1048 | } |
| 1049 | |
| 1050 | static inline int sysctl_sloppy_sctp(struct netns_ipvs *ipvs) |
| 1051 | { |
| 1052 | return ipvs->sysctl_sloppy_sctp; |
| 1053 | } |
| 1054 | |
Pablo Neira Ayuso | f73181c | 2012-05-08 19:40:30 +0200 | [diff] [blame] | 1055 | static inline int sysctl_sync_ports(struct netns_ipvs *ipvs) |
| 1056 | { |
| 1057 | return ACCESS_ONCE(ipvs->sysctl_sync_ports); |
| 1058 | } |
| 1059 | |
Julian Anastasov | 4d0c875 | 2013-06-24 22:44:41 +0300 | [diff] [blame] | 1060 | static inline int sysctl_sync_persist_mode(struct netns_ipvs *ipvs) |
| 1061 | { |
| 1062 | return ipvs->sysctl_sync_persist_mode; |
| 1063 | } |
| 1064 | |
Zhang Yanfei | 0799567 | 2013-04-29 11:55:10 -0700 | [diff] [blame] | 1065 | static inline unsigned long sysctl_sync_qlen_max(struct netns_ipvs *ipvs) |
Pablo Neira Ayuso | 1c003b1 | 2012-05-08 19:39:49 +0200 | [diff] [blame] | 1066 | { |
| 1067 | return ipvs->sysctl_sync_qlen_max; |
| 1068 | } |
| 1069 | |
| 1070 | static inline int sysctl_sync_sock_size(struct netns_ipvs *ipvs) |
| 1071 | { |
| 1072 | return ipvs->sysctl_sync_sock_size; |
| 1073 | } |
| 1074 | |
Julian Anastasov | 3654e61 | 2012-07-20 11:59:53 +0300 | [diff] [blame] | 1075 | static inline int sysctl_pmtu_disc(struct netns_ipvs *ipvs) |
| 1076 | { |
| 1077 | return ipvs->sysctl_pmtu_disc; |
| 1078 | } |
| 1079 | |
Julian Anastasov | 0c12582 | 2013-03-09 23:25:04 +0200 | [diff] [blame] | 1080 | static inline int sysctl_backup_only(struct netns_ipvs *ipvs) |
| 1081 | { |
| 1082 | return ipvs->sync_state & IP_VS_STATE_BACKUP && |
| 1083 | ipvs->sysctl_backup_only; |
| 1084 | } |
| 1085 | |
Marcelo Ricardo Leitner | d752c36 | 2015-02-23 15:02:34 -0300 | [diff] [blame] | 1086 | static inline int sysctl_conn_reuse_mode(struct netns_ipvs *ipvs) |
| 1087 | { |
| 1088 | return ipvs->sysctl_conn_reuse_mode; |
| 1089 | } |
| 1090 | |
Alex Gartrell | 94485fe | 2015-08-26 09:40:34 -0700 | [diff] [blame] | 1091 | static inline int sysctl_schedule_icmp(struct netns_ipvs *ipvs) |
| 1092 | { |
| 1093 | return ipvs->sysctl_schedule_icmp; |
| 1094 | } |
| 1095 | |
Alex Gartrell | 4e47809 | 2015-09-14 23:23:05 -0700 | [diff] [blame] | 1096 | static inline int sysctl_ignore_tunneled(struct netns_ipvs *ipvs) |
| 1097 | { |
| 1098 | return ipvs->sysctl_ignore_tunneled; |
| 1099 | } |
| 1100 | |
Simon Horman | 59e0350 | 2011-02-04 18:33:01 +0900 | [diff] [blame] | 1101 | #else |
| 1102 | |
| 1103 | static inline int sysctl_sync_threshold(struct netns_ipvs *ipvs) |
| 1104 | { |
| 1105 | return DEFAULT_SYNC_THRESHOLD; |
| 1106 | } |
| 1107 | |
| 1108 | static inline int sysctl_sync_period(struct netns_ipvs *ipvs) |
| 1109 | { |
| 1110 | return DEFAULT_SYNC_PERIOD; |
| 1111 | } |
| 1112 | |
Julian Anastasov | 749c42b | 2012-04-24 23:46:40 +0300 | [diff] [blame] | 1113 | static inline unsigned int sysctl_sync_refresh_period(struct netns_ipvs *ipvs) |
| 1114 | { |
| 1115 | return DEFAULT_SYNC_REFRESH_PERIOD; |
| 1116 | } |
| 1117 | |
| 1118 | static inline int sysctl_sync_retries(struct netns_ipvs *ipvs) |
| 1119 | { |
| 1120 | return DEFAULT_SYNC_RETRIES & 3; |
| 1121 | } |
| 1122 | |
Simon Horman | 7532e8d | 2011-02-04 18:33:01 +0900 | [diff] [blame] | 1123 | static inline int sysctl_sync_ver(struct netns_ipvs *ipvs) |
| 1124 | { |
| 1125 | return DEFAULT_SYNC_VER; |
| 1126 | } |
| 1127 | |
Alexander Frolkin | c6c96c1 | 2013-06-13 08:56:15 +0100 | [diff] [blame] | 1128 | static inline int sysctl_sloppy_tcp(struct netns_ipvs *ipvs) |
| 1129 | { |
| 1130 | return DEFAULT_SLOPPY_TCP; |
| 1131 | } |
| 1132 | |
| 1133 | static inline int sysctl_sloppy_sctp(struct netns_ipvs *ipvs) |
| 1134 | { |
| 1135 | return DEFAULT_SLOPPY_SCTP; |
| 1136 | } |
| 1137 | |
Pablo Neira Ayuso | f73181c | 2012-05-08 19:40:30 +0200 | [diff] [blame] | 1138 | static inline int sysctl_sync_ports(struct netns_ipvs *ipvs) |
| 1139 | { |
| 1140 | return 1; |
| 1141 | } |
| 1142 | |
Julian Anastasov | 4d0c875 | 2013-06-24 22:44:41 +0300 | [diff] [blame] | 1143 | static inline int sysctl_sync_persist_mode(struct netns_ipvs *ipvs) |
| 1144 | { |
| 1145 | return 0; |
| 1146 | } |
| 1147 | |
Zhang Yanfei | 0799567 | 2013-04-29 11:55:10 -0700 | [diff] [blame] | 1148 | static inline unsigned long sysctl_sync_qlen_max(struct netns_ipvs *ipvs) |
Pablo Neira Ayuso | 1c003b1 | 2012-05-08 19:39:49 +0200 | [diff] [blame] | 1149 | { |
| 1150 | return IPVS_SYNC_QLEN_MAX; |
| 1151 | } |
| 1152 | |
| 1153 | static inline int sysctl_sync_sock_size(struct netns_ipvs *ipvs) |
| 1154 | { |
| 1155 | return 0; |
| 1156 | } |
| 1157 | |
Julian Anastasov | 3654e61 | 2012-07-20 11:59:53 +0300 | [diff] [blame] | 1158 | static inline int sysctl_pmtu_disc(struct netns_ipvs *ipvs) |
| 1159 | { |
| 1160 | return 1; |
| 1161 | } |
| 1162 | |
Julian Anastasov | 0c12582 | 2013-03-09 23:25:04 +0200 | [diff] [blame] | 1163 | static inline int sysctl_backup_only(struct netns_ipvs *ipvs) |
| 1164 | { |
| 1165 | return 0; |
| 1166 | } |
| 1167 | |
Marcelo Ricardo Leitner | d752c36 | 2015-02-23 15:02:34 -0300 | [diff] [blame] | 1168 | static inline int sysctl_conn_reuse_mode(struct netns_ipvs *ipvs) |
| 1169 | { |
| 1170 | return 1; |
| 1171 | } |
| 1172 | |
Alex Gartrell | 94485fe | 2015-08-26 09:40:34 -0700 | [diff] [blame] | 1173 | static inline int sysctl_schedule_icmp(struct netns_ipvs *ipvs) |
| 1174 | { |
| 1175 | return 0; |
| 1176 | } |
| 1177 | |
Alex Gartrell | 4e47809 | 2015-09-14 23:23:05 -0700 | [diff] [blame] | 1178 | static inline int sysctl_ignore_tunneled(struct netns_ipvs *ipvs) |
| 1179 | { |
| 1180 | return 0; |
| 1181 | } |
| 1182 | |
Simon Horman | 59e0350 | 2011-02-04 18:33:01 +0900 | [diff] [blame] | 1183 | #endif |
| 1184 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1185 | /* IPVS core functions |
| 1186 | * (from ip_vs_core.c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | */ |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1188 | const char *ip_vs_proto_name(unsigned int proto); |
| 1189 | void ip_vs_init_hash_table(struct list_head *table, int rows); |
Sven Wegener | afdd614 | 2008-08-10 09:18:01 +0000 | [diff] [blame] | 1190 | #define IP_VS_INIT_HASH_TABLE(t) ip_vs_init_hash_table((t), ARRAY_SIZE((t))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1191 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | #define IP_VS_APP_TYPE_FTP 1 |
| 1193 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1194 | /* ip_vs_conn handling functions |
| 1195 | * (from ip_vs_conn.c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1197 | enum { |
| 1198 | IP_VS_DIR_INPUT = 0, |
| 1199 | IP_VS_DIR_OUTPUT, |
| 1200 | IP_VS_DIR_INPUT_ONLY, |
| 1201 | IP_VS_DIR_LAST, |
| 1202 | }; |
| 1203 | |
Eric W. Biederman | 19913de | 2015-09-21 13:01:43 -0500 | [diff] [blame] | 1204 | static inline void ip_vs_conn_fill_param(struct netns_ipvs *ipvs, int af, int protocol, |
Simon Horman | f11017e | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 1205 | const union nf_inet_addr *caddr, |
| 1206 | __be16 cport, |
| 1207 | const union nf_inet_addr *vaddr, |
| 1208 | __be16 vport, |
| 1209 | struct ip_vs_conn_param *p) |
| 1210 | { |
Eric W. Biederman | 19913de | 2015-09-21 13:01:43 -0500 | [diff] [blame] | 1211 | p->ipvs = ipvs; |
Simon Horman | f11017e | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 1212 | p->af = af; |
| 1213 | p->protocol = protocol; |
| 1214 | p->caddr = caddr; |
| 1215 | p->cport = cport; |
| 1216 | p->vaddr = vaddr; |
| 1217 | p->vport = vport; |
Simon Horman | 8599928 | 2010-08-22 21:37:53 +0900 | [diff] [blame] | 1218 | p->pe = NULL; |
| 1219 | p->pe_data = NULL; |
Simon Horman | f11017e | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 1220 | } |
Julius Volz | 28364a5 | 2008-09-02 15:55:43 +0200 | [diff] [blame] | 1221 | |
Simon Horman | f11017e | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 1222 | struct ip_vs_conn *ip_vs_conn_in_get(const struct ip_vs_conn_param *p); |
| 1223 | struct ip_vs_conn *ip_vs_ct_in_get(const struct ip_vs_conn_param *p); |
Julius Volz | 28364a5 | 2008-09-02 15:55:43 +0200 | [diff] [blame] | 1224 | |
Simon Horman | 5c0d237 | 2010-08-02 17:12:44 +0200 | [diff] [blame] | 1225 | struct ip_vs_conn * ip_vs_conn_in_get_proto(int af, const struct sk_buff *skb, |
Alex Gartrell | 802c41a | 2015-08-26 09:40:32 -0700 | [diff] [blame] | 1226 | const struct ip_vs_iphdr *iph); |
Simon Horman | 5c0d237 | 2010-08-02 17:12:44 +0200 | [diff] [blame] | 1227 | |
Simon Horman | f11017e | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 1228 | struct ip_vs_conn *ip_vs_conn_out_get(const struct ip_vs_conn_param *p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1229 | |
Simon Horman | 5c0d237 | 2010-08-02 17:12:44 +0200 | [diff] [blame] | 1230 | struct ip_vs_conn * ip_vs_conn_out_get_proto(int af, const struct sk_buff *skb, |
Alex Gartrell | 802c41a | 2015-08-26 09:40:32 -0700 | [diff] [blame] | 1231 | const struct ip_vs_iphdr *iph); |
Simon Horman | 5c0d237 | 2010-08-02 17:12:44 +0200 | [diff] [blame] | 1232 | |
Julian Anastasov | 088339a | 2013-03-21 11:58:10 +0200 | [diff] [blame] | 1233 | /* Get reference to gain full access to conn. |
| 1234 | * By default, RCU read-side critical sections have access only to |
| 1235 | * conn fields and its PE data, see ip_vs_conn_rcu_free() for reference. |
| 1236 | */ |
| 1237 | static inline bool __ip_vs_conn_get(struct ip_vs_conn *cp) |
| 1238 | { |
| 1239 | return atomic_inc_not_zero(&cp->refcnt); |
| 1240 | } |
| 1241 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1242 | /* put back the conn without restarting its timer */ |
| 1243 | static inline void __ip_vs_conn_put(struct ip_vs_conn *cp) |
| 1244 | { |
Peter Zijlstra | 4e857c5 | 2014-03-17 18:06:10 +0100 | [diff] [blame] | 1245 | smp_mb__before_atomic(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1246 | atomic_dec(&cp->refcnt); |
| 1247 | } |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1248 | void ip_vs_conn_put(struct ip_vs_conn *cp); |
| 1249 | void ip_vs_conn_fill_cport(struct ip_vs_conn *cp, __be16 cport); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | |
Alex Gartrell | ba38528 | 2014-09-09 16:40:23 -0700 | [diff] [blame] | 1251 | struct ip_vs_conn *ip_vs_conn_new(const struct ip_vs_conn_param *p, int dest_af, |
Simon Horman | f11017e | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 1252 | const union nf_inet_addr *daddr, |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 1253 | __be16 dport, unsigned int flags, |
Hans Schillstrom | 0e051e6 | 2010-11-19 14:25:07 +0100 | [diff] [blame] | 1254 | struct ip_vs_dest *dest, __u32 fwmark); |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1255 | void ip_vs_conn_expire_now(struct ip_vs_conn *cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1256 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1257 | const char *ip_vs_state_name(__u16 proto, int state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1259 | void ip_vs_tcp_conn_listen(struct net *net, struct ip_vs_conn *cp); |
| 1260 | int ip_vs_check_template(struct ip_vs_conn *ct); |
Eric W. Biederman | 423b559 | 2015-09-21 13:02:24 -0500 | [diff] [blame] | 1261 | void ip_vs_random_dropentry(struct netns_ipvs *ipvs); |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1262 | int ip_vs_conn_init(void); |
| 1263 | void ip_vs_conn_cleanup(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1264 | |
| 1265 | static inline void ip_vs_control_del(struct ip_vs_conn *cp) |
| 1266 | { |
| 1267 | struct ip_vs_conn *ctl_cp = cp->control; |
| 1268 | if (!ctl_cp) { |
Julius Volz | cfc78c5 | 2008-09-02 15:55:53 +0200 | [diff] [blame] | 1269 | IP_VS_ERR_BUF("request control DEL for uncontrolled: " |
| 1270 | "%s:%d to %s:%d\n", |
| 1271 | IP_VS_DBG_ADDR(cp->af, &cp->caddr), |
| 1272 | ntohs(cp->cport), |
| 1273 | IP_VS_DBG_ADDR(cp->af, &cp->vaddr), |
| 1274 | ntohs(cp->vport)); |
| 1275 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | return; |
| 1277 | } |
| 1278 | |
Julius Volz | cfc78c5 | 2008-09-02 15:55:53 +0200 | [diff] [blame] | 1279 | IP_VS_DBG_BUF(7, "DELeting control for: " |
| 1280 | "cp.dst=%s:%d ctl_cp.dst=%s:%d\n", |
| 1281 | IP_VS_DBG_ADDR(cp->af, &cp->caddr), |
| 1282 | ntohs(cp->cport), |
| 1283 | IP_VS_DBG_ADDR(cp->af, &ctl_cp->caddr), |
| 1284 | ntohs(ctl_cp->cport)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1285 | |
| 1286 | cp->control = NULL; |
| 1287 | if (atomic_read(&ctl_cp->n_control) == 0) { |
Julius Volz | cfc78c5 | 2008-09-02 15:55:53 +0200 | [diff] [blame] | 1288 | IP_VS_ERR_BUF("BUG control DEL with n=0 : " |
| 1289 | "%s:%d to %s:%d\n", |
| 1290 | IP_VS_DBG_ADDR(cp->af, &cp->caddr), |
| 1291 | ntohs(cp->cport), |
| 1292 | IP_VS_DBG_ADDR(cp->af, &cp->vaddr), |
| 1293 | ntohs(cp->vport)); |
| 1294 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | return; |
| 1296 | } |
| 1297 | atomic_dec(&ctl_cp->n_control); |
| 1298 | } |
| 1299 | |
| 1300 | static inline void |
| 1301 | ip_vs_control_add(struct ip_vs_conn *cp, struct ip_vs_conn *ctl_cp) |
| 1302 | { |
| 1303 | if (cp->control) { |
Julius Volz | cfc78c5 | 2008-09-02 15:55:53 +0200 | [diff] [blame] | 1304 | IP_VS_ERR_BUF("request control ADD for already controlled: " |
| 1305 | "%s:%d to %s:%d\n", |
| 1306 | IP_VS_DBG_ADDR(cp->af, &cp->caddr), |
| 1307 | ntohs(cp->cport), |
| 1308 | IP_VS_DBG_ADDR(cp->af, &cp->vaddr), |
| 1309 | ntohs(cp->vport)); |
| 1310 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | ip_vs_control_del(cp); |
| 1312 | } |
| 1313 | |
Julius Volz | cfc78c5 | 2008-09-02 15:55:53 +0200 | [diff] [blame] | 1314 | IP_VS_DBG_BUF(7, "ADDing control for: " |
| 1315 | "cp.dst=%s:%d ctl_cp.dst=%s:%d\n", |
| 1316 | IP_VS_DBG_ADDR(cp->af, &cp->caddr), |
| 1317 | ntohs(cp->cport), |
| 1318 | IP_VS_DBG_ADDR(cp->af, &ctl_cp->caddr), |
| 1319 | ntohs(ctl_cp->cport)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | |
| 1321 | cp->control = ctl_cp; |
| 1322 | atomic_inc(&ctl_cp->n_control); |
| 1323 | } |
| 1324 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1325 | /* IPVS netns init & cleanup functions */ |
Eric W. Biederman | a4dd036 | 2015-09-21 13:02:28 -0500 | [diff] [blame] | 1326 | int ip_vs_estimator_net_init(struct netns_ipvs *ipvs); |
Eric W. Biederman | 3d99376 | 2015-09-21 13:02:26 -0500 | [diff] [blame] | 1327 | int ip_vs_control_net_init(struct netns_ipvs *ipvs); |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1328 | int ip_vs_protocol_net_init(struct net *net); |
Eric W. Biederman | b5dd212 | 2015-09-21 13:02:34 -0500 | [diff] [blame^] | 1329 | int ip_vs_app_net_init(struct netns_ipvs *ipvs); |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1330 | int ip_vs_conn_net_init(struct net *net); |
Eric W. Biederman | 802cb43 | 2015-09-21 13:02:20 -0500 | [diff] [blame] | 1331 | int ip_vs_sync_net_init(struct netns_ipvs *ipvs); |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1332 | void ip_vs_conn_net_cleanup(struct net *net); |
Eric W. Biederman | b5dd212 | 2015-09-21 13:02:34 -0500 | [diff] [blame^] | 1333 | void ip_vs_app_net_cleanup(struct netns_ipvs *ipvs); |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1334 | void ip_vs_protocol_net_cleanup(struct net *net); |
Eric W. Biederman | 3d99376 | 2015-09-21 13:02:26 -0500 | [diff] [blame] | 1335 | void ip_vs_control_net_cleanup(struct netns_ipvs *ipvs); |
Eric W. Biederman | a4dd036 | 2015-09-21 13:02:28 -0500 | [diff] [blame] | 1336 | void ip_vs_estimator_net_cleanup(struct netns_ipvs *ipvs); |
Eric W. Biederman | ebea1f7 | 2015-09-21 13:02:21 -0500 | [diff] [blame] | 1337 | void ip_vs_sync_net_cleanup(struct netns_ipvs *ipvs); |
Eric W. Biederman | 56d2169 | 2015-09-21 13:01:58 -0500 | [diff] [blame] | 1338 | void ip_vs_service_net_cleanup(struct netns_ipvs *ipvs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1340 | /* IPVS application functions |
| 1341 | * (from ip_vs_app.c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | */ |
| 1343 | #define IP_VS_APP_MAX_PORTS 8 |
Eric W. Biederman | 9f8128a | 2015-09-21 13:02:32 -0500 | [diff] [blame] | 1344 | struct ip_vs_app *register_ip_vs_app(struct netns_ipvs *ipvs, struct ip_vs_app *app); |
| 1345 | void unregister_ip_vs_app(struct netns_ipvs *ipvs, struct ip_vs_app *app); |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1346 | int ip_vs_bind_app(struct ip_vs_conn *cp, struct ip_vs_protocol *pp); |
| 1347 | void ip_vs_unbind_app(struct ip_vs_conn *cp); |
Eric W. Biederman | 3250dc9 | 2015-09-21 13:02:31 -0500 | [diff] [blame] | 1348 | int register_ip_vs_app_inc(struct netns_ipvs *ipvs, struct ip_vs_app *app, __u16 proto, |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1349 | __u16 port); |
| 1350 | int ip_vs_app_inc_get(struct ip_vs_app *inc); |
| 1351 | void ip_vs_app_inc_put(struct ip_vs_app *inc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1352 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1353 | int ip_vs_app_pkt_out(struct ip_vs_conn *, struct sk_buff *skb); |
| 1354 | int ip_vs_app_pkt_in(struct ip_vs_conn *, struct sk_buff *skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1355 | |
Simon Horman | 8be67a6 | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 1356 | int register_ip_vs_pe(struct ip_vs_pe *pe); |
| 1357 | int unregister_ip_vs_pe(struct ip_vs_pe *pe); |
Simon Horman | e9e5eee | 2010-11-08 20:05:57 +0900 | [diff] [blame] | 1358 | struct ip_vs_pe *ip_vs_pe_getbyname(const char *name); |
Hans Schillstrom | fe5e7a1 | 2010-11-19 14:25:12 +0100 | [diff] [blame] | 1359 | struct ip_vs_pe *__ip_vs_pe_getbyname(const char *pe_name); |
Simon Horman | e9e5eee | 2010-11-08 20:05:57 +0900 | [diff] [blame] | 1360 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1361 | /* Use a #define to avoid all of module.h just for these trivial ops */ |
Paul Gortmaker | 69e7dae | 2011-08-29 12:40:15 -0400 | [diff] [blame] | 1362 | #define ip_vs_pe_get(pe) \ |
| 1363 | if (pe && pe->module) \ |
Simon Horman | e9e5eee | 2010-11-08 20:05:57 +0900 | [diff] [blame] | 1364 | __module_get(pe->module); |
Simon Horman | e9e5eee | 2010-11-08 20:05:57 +0900 | [diff] [blame] | 1365 | |
Paul Gortmaker | 69e7dae | 2011-08-29 12:40:15 -0400 | [diff] [blame] | 1366 | #define ip_vs_pe_put(pe) \ |
| 1367 | if (pe && pe->module) \ |
Simon Horman | e9e5eee | 2010-11-08 20:05:57 +0900 | [diff] [blame] | 1368 | module_put(pe->module); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1369 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1370 | /* IPVS protocol functions (from ip_vs_proto.c) */ |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1371 | int ip_vs_protocol_init(void); |
| 1372 | void ip_vs_protocol_cleanup(void); |
| 1373 | void ip_vs_protocol_timeout_change(struct netns_ipvs *ipvs, int flags); |
| 1374 | int *ip_vs_create_timeout_table(int *table, int size); |
| 1375 | int ip_vs_set_state_timeout(int *table, int num, const char *const *names, |
| 1376 | const char *name, int to); |
| 1377 | void ip_vs_tcpudp_debug_packet(int af, struct ip_vs_protocol *pp, |
| 1378 | const struct sk_buff *skb, int offset, |
| 1379 | const char *msg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1380 | |
| 1381 | extern struct ip_vs_protocol ip_vs_protocol_tcp; |
| 1382 | extern struct ip_vs_protocol ip_vs_protocol_udp; |
| 1383 | extern struct ip_vs_protocol ip_vs_protocol_icmp; |
| 1384 | extern struct ip_vs_protocol ip_vs_protocol_esp; |
| 1385 | extern struct ip_vs_protocol ip_vs_protocol_ah; |
Venkata Mohan Reddy | 2906f66 | 2010-02-18 12:31:05 +0100 | [diff] [blame] | 1386 | extern struct ip_vs_protocol ip_vs_protocol_sctp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1387 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1388 | /* Registering/unregistering scheduler functions |
| 1389 | * (from ip_vs_sched.c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | */ |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1391 | int register_ip_vs_scheduler(struct ip_vs_scheduler *scheduler); |
| 1392 | int unregister_ip_vs_scheduler(struct ip_vs_scheduler *scheduler); |
| 1393 | int ip_vs_bind_scheduler(struct ip_vs_service *svc, |
| 1394 | struct ip_vs_scheduler *scheduler); |
| 1395 | void ip_vs_unbind_scheduler(struct ip_vs_service *svc, |
| 1396 | struct ip_vs_scheduler *sched); |
| 1397 | struct ip_vs_scheduler *ip_vs_scheduler_get(const char *sched_name); |
| 1398 | void ip_vs_scheduler_put(struct ip_vs_scheduler *scheduler); |
| 1399 | struct ip_vs_conn * |
Julian Anastasov | 190ecd2 | 2010-10-17 16:24:37 +0300 | [diff] [blame] | 1400 | ip_vs_schedule(struct ip_vs_service *svc, struct sk_buff *skb, |
Jesper Dangaard Brouer | d4383f0 | 2012-09-26 14:07:17 +0200 | [diff] [blame] | 1401 | struct ip_vs_proto_data *pd, int *ignored, |
| 1402 | struct ip_vs_iphdr *iph); |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1403 | int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb, |
| 1404 | struct ip_vs_proto_data *pd, struct ip_vs_iphdr *iph); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1406 | void ip_vs_scheduler_err(struct ip_vs_service *svc, const char *msg); |
Patrick Schaaf | 41ac51e | 2011-02-11 14:01:12 +0100 | [diff] [blame] | 1407 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1408 | /* IPVS control data and functions (from ip_vs_ctl.c) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1409 | extern struct ip_vs_stats ip_vs_stats; |
Hans Schillstrom | b880c1f | 2010-11-19 14:25:14 +0100 | [diff] [blame] | 1410 | extern int sysctl_ip_vs_sync_ver; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1412 | struct ip_vs_service * |
Eric W. Biederman | 0a4fd6c | 2015-09-21 13:01:49 -0500 | [diff] [blame] | 1413 | ip_vs_service_find(struct netns_ipvs *ipvs, int af, __u32 fwmark, __u16 protocol, |
Julius Volz | 3c2e050 | 2008-09-02 15:55:38 +0200 | [diff] [blame] | 1414 | const union nf_inet_addr *vaddr, __be16 vport); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | |
Eric W. Biederman | 48aed1b | 2015-09-21 13:01:50 -0500 | [diff] [blame] | 1416 | bool ip_vs_has_real_service(struct netns_ipvs *ipvs, int af, __u16 protocol, |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1417 | const union nf_inet_addr *daddr, __be16 dport); |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 1418 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1419 | int ip_vs_use_count_inc(void); |
| 1420 | void ip_vs_use_count_dec(void); |
| 1421 | int ip_vs_register_nl_ioctl(void); |
| 1422 | void ip_vs_unregister_nl_ioctl(void); |
| 1423 | int ip_vs_control_init(void); |
| 1424 | void ip_vs_control_cleanup(void); |
| 1425 | struct ip_vs_dest * |
Eric W. Biederman | dc2add6 | 2015-09-21 13:01:51 -0500 | [diff] [blame] | 1426 | ip_vs_find_dest(struct netns_ipvs *ipvs, int svc_af, int dest_af, |
Alex Gartrell | 655eef1 | 2014-09-09 16:40:21 -0700 | [diff] [blame] | 1427 | const union nf_inet_addr *daddr, __be16 dport, |
| 1428 | const union nf_inet_addr *vaddr, __be16 vport, |
Julian Anastasov | 52793db | 2011-12-30 14:19:02 +0900 | [diff] [blame] | 1429 | __u16 protocol, __u32 fwmark, __u32 flags); |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1430 | void ip_vs_try_bind_dest(struct ip_vs_conn *cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1431 | |
Julian Anastasov | fca9c20 | 2013-03-22 11:46:38 +0200 | [diff] [blame] | 1432 | static inline void ip_vs_dest_hold(struct ip_vs_dest *dest) |
| 1433 | { |
| 1434 | atomic_inc(&dest->refcnt); |
| 1435 | } |
| 1436 | |
| 1437 | static inline void ip_vs_dest_put(struct ip_vs_dest *dest) |
| 1438 | { |
Peter Zijlstra | 4e857c5 | 2014-03-17 18:06:10 +0100 | [diff] [blame] | 1439 | smp_mb__before_atomic(); |
Julian Anastasov | fca9c20 | 2013-03-22 11:46:38 +0200 | [diff] [blame] | 1440 | atomic_dec(&dest->refcnt); |
| 1441 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1442 | |
Julian Anastasov | 9e4e948 | 2013-10-09 09:24:27 +0300 | [diff] [blame] | 1443 | static inline void ip_vs_dest_put_and_free(struct ip_vs_dest *dest) |
| 1444 | { |
| 1445 | if (atomic_dec_return(&dest->refcnt) < 0) |
| 1446 | kfree(dest); |
| 1447 | } |
| 1448 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1449 | /* IPVS sync daemon data and function prototypes |
| 1450 | * (from ip_vs_sync.c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | */ |
Eric W. Biederman | 6ac121d | 2015-09-21 13:02:10 -0500 | [diff] [blame] | 1452 | int start_sync_thread(struct netns_ipvs *ipvs, struct ipvs_sync_daemon_cfg *cfg, |
Julian Anastasov | e4ff675 | 2015-07-26 15:03:27 +0300 | [diff] [blame] | 1453 | int state); |
Eric W. Biederman | b3cf3cb | 2015-09-21 13:02:11 -0500 | [diff] [blame] | 1454 | int stop_sync_thread(struct netns_ipvs *ipvs, int state); |
Eric W. Biederman | b61a8c1 | 2015-09-21 13:02:17 -0500 | [diff] [blame] | 1455 | void ip_vs_sync_conn(struct netns_ipvs *ipvs, struct ip_vs_conn *cp, int pkts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1456 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1457 | /* IPVS rate estimator prototypes (from ip_vs_est.c) */ |
Eric W. Biederman | 0f34d54 | 2015-09-21 13:02:23 -0500 | [diff] [blame] | 1458 | void ip_vs_start_estimator(struct netns_ipvs *ipvs, struct ip_vs_stats *stats); |
| 1459 | void ip_vs_stop_estimator(struct netns_ipvs *ipvs, struct ip_vs_stats *stats); |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1460 | void ip_vs_zero_estimator(struct ip_vs_stats *stats); |
Julian Anastasov | cd67cd5 | 2015-02-06 09:44:44 +0200 | [diff] [blame] | 1461 | void ip_vs_read_estimator(struct ip_vs_kstats *dst, struct ip_vs_stats *stats); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1462 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1463 | /* Various IPVS packet transmitters (from ip_vs_xmit.c) */ |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1464 | int ip_vs_null_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1465 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
| 1466 | int ip_vs_bypass_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1467 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
| 1468 | int ip_vs_nat_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1469 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
| 1470 | int ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1471 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
| 1472 | int ip_vs_dr_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1473 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
| 1474 | int ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1475 | struct ip_vs_protocol *pp, int offset, |
| 1476 | unsigned int hooknum, struct ip_vs_iphdr *iph); |
| 1477 | void ip_vs_dest_dst_rcu_free(struct rcu_head *head); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | |
Julius Volz | b3cdd2a7 | 2008-09-02 15:55:45 +0200 | [diff] [blame] | 1479 | #ifdef CONFIG_IP_VS_IPV6 |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1480 | int ip_vs_bypass_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1481 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
| 1482 | int ip_vs_nat_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1483 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
| 1484 | int ip_vs_tunnel_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1485 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
| 1486 | int ip_vs_dr_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1487 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
| 1488 | int ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1489 | struct ip_vs_protocol *pp, int offset, |
| 1490 | unsigned int hooknum, struct ip_vs_iphdr *iph); |
Julius Volz | b3cdd2a7 | 2008-09-02 15:55:45 +0200 | [diff] [blame] | 1491 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1492 | |
Simon Horman | 3a1bbf1 | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 1493 | #ifdef CONFIG_SYSCTL |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1494 | /* This is a simple mechanism to ignore packets when |
| 1495 | * we are loaded. Just set ip_vs_drop_rate to 'n' and |
| 1496 | * we start to drop 1/rate of the packets |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1497 | */ |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1498 | static inline int ip_vs_todrop(struct netns_ipvs *ipvs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1499 | { |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1500 | if (!ipvs->drop_rate) |
| 1501 | return 0; |
| 1502 | if (--ipvs->drop_counter > 0) |
| 1503 | return 0; |
| 1504 | ipvs->drop_counter = ipvs->drop_rate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1505 | return 1; |
| 1506 | } |
Simon Horman | 3a1bbf1 | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 1507 | #else |
| 1508 | static inline int ip_vs_todrop(struct netns_ipvs *ipvs) { return 0; } |
| 1509 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1510 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1511 | /* ip_vs_fwd_tag returns the forwarding tag of the connection */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1512 | #define IP_VS_FWD_METHOD(cp) (cp->flags & IP_VS_CONN_F_FWD_MASK) |
| 1513 | |
Adrian Bunk | 732db65 | 2005-09-01 17:40:26 -0700 | [diff] [blame] | 1514 | static inline char ip_vs_fwd_tag(struct ip_vs_conn *cp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1515 | { |
| 1516 | char fwd; |
| 1517 | |
| 1518 | switch (IP_VS_FWD_METHOD(cp)) { |
| 1519 | case IP_VS_CONN_F_MASQ: |
| 1520 | fwd = 'M'; break; |
| 1521 | case IP_VS_CONN_F_LOCALNODE: |
| 1522 | fwd = 'L'; break; |
| 1523 | case IP_VS_CONN_F_TUNNEL: |
| 1524 | fwd = 'T'; break; |
| 1525 | case IP_VS_CONN_F_DROUTE: |
| 1526 | fwd = 'R'; break; |
| 1527 | case IP_VS_CONN_F_BYPASS: |
| 1528 | fwd = 'B'; break; |
| 1529 | default: |
| 1530 | fwd = '?'; break; |
| 1531 | } |
| 1532 | return fwd; |
| 1533 | } |
| 1534 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1535 | void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp, |
| 1536 | struct ip_vs_conn *cp, int dir); |
Julius Volz | b3cdd2a7 | 2008-09-02 15:55:45 +0200 | [diff] [blame] | 1537 | |
| 1538 | #ifdef CONFIG_IP_VS_IPV6 |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1539 | void ip_vs_nat_icmp_v6(struct sk_buff *skb, struct ip_vs_protocol *pp, |
| 1540 | struct ip_vs_conn *cp, int dir); |
Julius Volz | b3cdd2a7 | 2008-09-02 15:55:45 +0200 | [diff] [blame] | 1541 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1542 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1543 | __sum16 ip_vs_checksum_complete(struct sk_buff *skb, int offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1544 | |
Al Viro | f9214b2 | 2006-11-16 02:41:18 -0800 | [diff] [blame] | 1545 | static inline __wsum ip_vs_check_diff4(__be32 old, __be32 new, __wsum oldsum) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1546 | { |
Al Viro | f9214b2 | 2006-11-16 02:41:18 -0800 | [diff] [blame] | 1547 | __be32 diff[2] = { ~old, new }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1548 | |
Joe Perches | 07f0757 | 2008-11-19 15:44:53 -0800 | [diff] [blame] | 1549 | return csum_partial(diff, sizeof(diff), oldsum); |
Al Viro | f9214b2 | 2006-11-16 02:41:18 -0800 | [diff] [blame] | 1550 | } |
| 1551 | |
Julius Volz | 0bbdd42 | 2008-09-02 15:55:42 +0200 | [diff] [blame] | 1552 | #ifdef CONFIG_IP_VS_IPV6 |
| 1553 | static inline __wsum ip_vs_check_diff16(const __be32 *old, const __be32 *new, |
| 1554 | __wsum oldsum) |
| 1555 | { |
| 1556 | __be32 diff[8] = { ~old[3], ~old[2], ~old[1], ~old[0], |
| 1557 | new[3], new[2], new[1], new[0] }; |
| 1558 | |
Joe Perches | 07f0757 | 2008-11-19 15:44:53 -0800 | [diff] [blame] | 1559 | return csum_partial(diff, sizeof(diff), oldsum); |
Julius Volz | 0bbdd42 | 2008-09-02 15:55:42 +0200 | [diff] [blame] | 1560 | } |
| 1561 | #endif |
| 1562 | |
Al Viro | f9214b2 | 2006-11-16 02:41:18 -0800 | [diff] [blame] | 1563 | static inline __wsum ip_vs_check_diff2(__be16 old, __be16 new, __wsum oldsum) |
| 1564 | { |
| 1565 | __be16 diff[2] = { ~old, new }; |
| 1566 | |
Joe Perches | 07f0757 | 2008-11-19 15:44:53 -0800 | [diff] [blame] | 1567 | return csum_partial(diff, sizeof(diff), oldsum); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1568 | } |
| 1569 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1570 | /* Forget current conntrack (unconfirmed) and attach notrack entry */ |
Julian Anastasov | cf356d6 | 2010-10-17 16:21:07 +0300 | [diff] [blame] | 1571 | static inline void ip_vs_notrack(struct sk_buff *skb) |
| 1572 | { |
| 1573 | #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) |
| 1574 | enum ip_conntrack_info ctinfo; |
Jesper Juhl | 06b6939 | 2011-03-09 22:55:05 +0100 | [diff] [blame] | 1575 | struct nf_conn *ct = nf_ct_get(skb, &ctinfo); |
Julian Anastasov | cf356d6 | 2010-10-17 16:21:07 +0300 | [diff] [blame] | 1576 | |
| 1577 | if (!ct || !nf_ct_is_untracked(ct)) { |
Lin Ming | 9e33ce4 | 2012-07-07 18:26:10 +0800 | [diff] [blame] | 1578 | nf_conntrack_put(skb->nfct); |
Julian Anastasov | cf356d6 | 2010-10-17 16:21:07 +0300 | [diff] [blame] | 1579 | skb->nfct = &nf_ct_untracked_get()->ct_general; |
| 1580 | skb->nfctinfo = IP_CT_NEW; |
| 1581 | nf_conntrack_get(skb->nfct); |
| 1582 | } |
| 1583 | #endif |
| 1584 | } |
| 1585 | |
Julian Anastasov | f4bc17c | 2010-09-21 17:35:41 +0200 | [diff] [blame] | 1586 | #ifdef CONFIG_IP_VS_NFCT |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1587 | /* Netfilter connection tracking |
| 1588 | * (from ip_vs_nfct.c) |
Julian Anastasov | f4bc17c | 2010-09-21 17:35:41 +0200 | [diff] [blame] | 1589 | */ |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1590 | static inline int ip_vs_conntrack_enabled(struct netns_ipvs *ipvs) |
Julian Anastasov | f4bc17c | 2010-09-21 17:35:41 +0200 | [diff] [blame] | 1591 | { |
Simon Horman | a4e2f5a | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 1592 | #ifdef CONFIG_SYSCTL |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1593 | return ipvs->sysctl_conntrack; |
Simon Horman | a4e2f5a | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 1594 | #else |
| 1595 | return 0; |
| 1596 | #endif |
Julian Anastasov | f4bc17c | 2010-09-21 17:35:41 +0200 | [diff] [blame] | 1597 | } |
| 1598 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1599 | void ip_vs_update_conntrack(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1600 | int outin); |
| 1601 | int ip_vs_confirm_conntrack(struct sk_buff *skb); |
| 1602 | void ip_vs_nfct_expect_related(struct sk_buff *skb, struct nf_conn *ct, |
| 1603 | struct ip_vs_conn *cp, u_int8_t proto, |
| 1604 | const __be16 port, int from_rs); |
| 1605 | void ip_vs_conn_drop_conntrack(struct ip_vs_conn *cp); |
Julian Anastasov | f4bc17c | 2010-09-21 17:35:41 +0200 | [diff] [blame] | 1606 | |
| 1607 | #else |
| 1608 | |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1609 | static inline int ip_vs_conntrack_enabled(struct netns_ipvs *ipvs) |
Julian Anastasov | f4bc17c | 2010-09-21 17:35:41 +0200 | [diff] [blame] | 1610 | { |
| 1611 | return 0; |
| 1612 | } |
| 1613 | |
| 1614 | static inline void ip_vs_update_conntrack(struct sk_buff *skb, |
| 1615 | struct ip_vs_conn *cp, int outin) |
| 1616 | { |
| 1617 | } |
| 1618 | |
Krzysztof Wilczynski | e23ebf0 | 2011-10-20 13:18:04 +0100 | [diff] [blame] | 1619 | static inline int ip_vs_confirm_conntrack(struct sk_buff *skb) |
Julian Anastasov | f4bc17c | 2010-09-21 17:35:41 +0200 | [diff] [blame] | 1620 | { |
| 1621 | return NF_ACCEPT; |
| 1622 | } |
| 1623 | |
| 1624 | static inline void ip_vs_conn_drop_conntrack(struct ip_vs_conn *cp) |
| 1625 | { |
| 1626 | } |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1627 | #endif /* CONFIG_IP_VS_NFCT */ |
Julian Anastasov | 6523ce1 | 2010-09-05 18:02:29 +0000 | [diff] [blame] | 1628 | |
Simon Kirby | c16526a | 2013-08-10 01:26:18 -0700 | [diff] [blame] | 1629 | static inline int |
Changli Gao | b552f7e | 2011-02-19 17:32:28 +0800 | [diff] [blame] | 1630 | ip_vs_dest_conn_overhead(struct ip_vs_dest *dest) |
| 1631 | { |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1632 | /* We think the overhead of processing active connections is 256 |
Changli Gao | b552f7e | 2011-02-19 17:32:28 +0800 | [diff] [blame] | 1633 | * times higher than that of inactive connections in average. (This |
| 1634 | * 256 times might not be accurate, we will change it later) We |
| 1635 | * use the following formula to estimate the overhead now: |
| 1636 | * dest->activeconns*256 + dest->inactconns |
| 1637 | */ |
| 1638 | return (atomic_read(&dest->activeconns) << 8) + |
| 1639 | atomic_read(&dest->inactconns); |
| 1640 | } |
| 1641 | |
Julius Volz | bc4768e | 2008-07-31 20:45:24 -0700 | [diff] [blame] | 1642 | #endif /* _NET_IP_VS_H */ |