Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 2 | /* IP Virtual Server |
| 3 | * data structure and functionality definitions |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | */ |
| 5 | |
Julius Volz | bc4768e | 2008-07-31 20:45:24 -0700 | [diff] [blame] | 6 | #ifndef _NET_IP_VS_H |
| 7 | #define _NET_IP_VS_H |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | |
Julius Volz | bc4768e | 2008-07-31 20:45:24 -0700 | [diff] [blame] | 9 | #include <linux/ip_vs.h> /* definitions shared with userland */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | |
Julius Volz | bc4768e | 2008-07-31 20:45:24 -0700 | [diff] [blame] | 11 | #include <asm/types.h> /* for __uXX types */ |
| 12 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <linux/list.h> /* for struct list_head */ |
| 14 | #include <linux/spinlock.h> /* for struct rwlock_t */ |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 15 | #include <linux/atomic.h> /* for struct atomic_t */ |
Reshetova, Elena | b54ab92 | 2017-03-16 10:03:34 +0200 | [diff] [blame] | 16 | #include <linux/refcount.h> /* for struct refcount_t */ |
| 17 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include <linux/compiler.h> |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 19 | #include <linux/timer.h> |
Paul Gortmaker | 187f188 | 2011-11-23 20:12:59 -0500 | [diff] [blame] | 20 | #include <linux/bug.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 22 | #include <net/checksum.h> |
Julius Volz | e7ade46 | 2008-09-02 15:55:33 +0200 | [diff] [blame] | 23 | #include <linux/netfilter.h> /* for union nf_inet_addr */ |
KOVACS Krisztian | 1668e01 | 2008-10-01 07:33:10 -0700 | [diff] [blame] | 24 | #include <linux/ip.h> |
Julius Volz | e7ade46 | 2008-09-02 15:55:33 +0200 | [diff] [blame] | 25 | #include <linux/ipv6.h> /* for struct ipv6hdr */ |
Alexey Dobriyan | 4e3fd7a | 2011-11-21 03:39:03 +0000 | [diff] [blame] | 26 | #include <net/ipv6.h> |
Jesper Dangaard Brouer | 54d83ef | 2012-10-22 21:22:45 +0200 | [diff] [blame] | 27 | #if IS_ENABLED(CONFIG_IP_VS_IPV6) |
Jesper Dangaard Brouer | 63dca2c | 2012-09-26 14:06:41 +0200 | [diff] [blame] | 28 | #include <linux/netfilter_ipv6/ip6_tables.h> |
| 29 | #endif |
Jesper Dangaard Brouer | a638e51 | 2012-09-26 14:06:20 +0200 | [diff] [blame] | 30 | #if IS_ENABLED(CONFIG_NF_CONNTRACK) |
Julian Anastasov | f4bc17c | 2010-09-21 17:35:41 +0200 | [diff] [blame] | 31 | #include <net/netfilter/nf_conntrack.h> |
| 32 | #endif |
Hans Schillstrom | 61b1ab4 | 2011-01-03 14:44:42 +0100 | [diff] [blame] | 33 | #include <net/net_namespace.h> /* Netw namespace */ |
| 34 | |
Alex Gartrell | 4fd9bee | 2015-08-26 09:40:29 -0700 | [diff] [blame] | 35 | #define IP_VS_HDR_INVERSE 1 |
| 36 | #define IP_VS_HDR_ICMP 2 |
| 37 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 38 | /* Generic access of ipvs struct */ |
Hans Schillstrom | 61b1ab4 | 2011-01-03 14:44:42 +0100 | [diff] [blame] | 39 | static inline struct netns_ipvs *net_ipvs(struct net* net) |
| 40 | { |
| 41 | return net->ipvs; |
| 42 | } |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 43 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 44 | /* 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] | 45 | * 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] | 46 | */ |
| 47 | static inline struct net *seq_file_single_net(struct seq_file *seq) |
| 48 | { |
| 49 | #ifdef CONFIG_NET_NS |
| 50 | return (struct net *)seq->private; |
| 51 | #else |
| 52 | return &init_net; |
| 53 | #endif |
| 54 | } |
Catalin(ux) M. BOIE | 6f7edb4 | 2010-01-05 05:50:24 +0100 | [diff] [blame] | 55 | |
| 56 | /* Connections' size value needed by ip_vs_ctl.c */ |
| 57 | extern int ip_vs_conn_tab_size; |
| 58 | |
Julius Volz | 64aae3c | 2008-09-02 15:55:34 +0200 | [diff] [blame] | 59 | struct ip_vs_iphdr { |
Alex Gartrell | 4fd9bee | 2015-08-26 09:40:29 -0700 | [diff] [blame] | 60 | int hdr_flags; /* ipvs flags */ |
Alex Gartrell | b0e010c | 2015-08-26 09:40:28 -0700 | [diff] [blame] | 61 | __u32 off; /* Where IP or IPv4 header starts */ |
Jesper Dangaard Brouer | 63dca2c | 2012-09-26 14:06:41 +0200 | [diff] [blame] | 62 | __u32 len; /* IPv4 simply where L4 starts |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 63 | * IPv6 where L4 Transport Header starts */ |
Jesper Dangaard Brouer | 63dca2c | 2012-09-26 14:06:41 +0200 | [diff] [blame] | 64 | __u16 fragoffs; /* IPv6 fragment offset, 0 if first frag (or not frag)*/ |
| 65 | __s16 protocol; |
| 66 | __s32 flags; |
Julius Volz | 64aae3c | 2008-09-02 15:55:34 +0200 | [diff] [blame] | 67 | union nf_inet_addr saddr; |
| 68 | union nf_inet_addr daddr; |
| 69 | }; |
| 70 | |
Jesper Dangaard Brouer | 2f74713 | 2012-09-26 14:06:59 +0200 | [diff] [blame] | 71 | static inline void *frag_safe_skb_hp(const struct sk_buff *skb, int offset, |
| 72 | int len, void *buffer, |
| 73 | const struct ip_vs_iphdr *ipvsh) |
| 74 | { |
| 75 | return skb_header_pointer(skb, offset, len, buffer); |
| 76 | } |
Jesper Dangaard Brouer | 2f74713 | 2012-09-26 14:06:59 +0200 | [diff] [blame] | 77 | |
Jesper Dangaard Brouer | 63dca2c | 2012-09-26 14:06:41 +0200 | [diff] [blame] | 78 | /* This function handles filling *ip_vs_iphdr, both for IPv4 and IPv6. |
| 79 | * IPv6 requires some extra work, as finding proper header position, |
| 80 | * depend on the IPv6 extension headers. |
| 81 | */ |
Alex Gartrell | b0e010c | 2015-08-26 09:40:28 -0700 | [diff] [blame] | 82 | static inline int |
| 83 | 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] | 84 | int hdr_flags, struct ip_vs_iphdr *iphdr) |
Julius Volz | 64aae3c | 2008-09-02 15:55:34 +0200 | [diff] [blame] | 85 | { |
Alex Gartrell | 4fd9bee | 2015-08-26 09:40:29 -0700 | [diff] [blame] | 86 | iphdr->hdr_flags = hdr_flags; |
Alex Gartrell | b0e010c | 2015-08-26 09:40:28 -0700 | [diff] [blame] | 87 | iphdr->off = offset; |
Alex Gartrell | 4fd9bee | 2015-08-26 09:40:29 -0700 | [diff] [blame] | 88 | |
Julius Volz | 64aae3c | 2008-09-02 15:55:34 +0200 | [diff] [blame] | 89 | #ifdef CONFIG_IP_VS_IPV6 |
| 90 | if (af == AF_INET6) { |
Alex Gartrell | b0e010c | 2015-08-26 09:40:28 -0700 | [diff] [blame] | 91 | struct ipv6hdr _iph; |
| 92 | const struct ipv6hdr *iph = skb_header_pointer( |
| 93 | skb, offset, sizeof(_iph), &_iph); |
| 94 | if (!iph) |
| 95 | return 0; |
| 96 | |
Alexey Dobriyan | 4e3fd7a | 2011-11-21 03:39:03 +0000 | [diff] [blame] | 97 | iphdr->saddr.in6 = iph->saddr; |
| 98 | iphdr->daddr.in6 = iph->daddr; |
Jiri Pirko | 6aafeef | 2013-11-06 17:52:20 +0100 | [diff] [blame] | 99 | /* ipv6_find_hdr() updates len, flags */ |
Alex Gartrell | b0e010c | 2015-08-26 09:40:28 -0700 | [diff] [blame] | 100 | iphdr->len = offset; |
Jesper Dangaard Brouer | 63dca2c | 2012-09-26 14:06:41 +0200 | [diff] [blame] | 101 | iphdr->flags = 0; |
| 102 | iphdr->protocol = ipv6_find_hdr(skb, &iphdr->len, -1, |
| 103 | &iphdr->fragoffs, |
| 104 | &iphdr->flags); |
Alex Gartrell | b0e010c | 2015-08-26 09:40:28 -0700 | [diff] [blame] | 105 | if (iphdr->protocol < 0) |
| 106 | return 0; |
Julius Volz | 64aae3c | 2008-09-02 15:55:34 +0200 | [diff] [blame] | 107 | } else |
| 108 | #endif |
| 109 | { |
Alex Gartrell | b0e010c | 2015-08-26 09:40:28 -0700 | [diff] [blame] | 110 | struct iphdr _iph; |
| 111 | const struct iphdr *iph = skb_header_pointer( |
| 112 | skb, offset, sizeof(_iph), &_iph); |
| 113 | if (!iph) |
| 114 | return 0; |
| 115 | |
| 116 | iphdr->len = offset + iph->ihl * 4; |
Jesper Dangaard Brouer | 63dca2c | 2012-09-26 14:06:41 +0200 | [diff] [blame] | 117 | iphdr->fragoffs = 0; |
| 118 | iphdr->protocol = iph->protocol; |
| 119 | iphdr->saddr.ip = iph->saddr; |
| 120 | iphdr->daddr.ip = iph->daddr; |
| 121 | } |
Alex Gartrell | b0e010c | 2015-08-26 09:40:28 -0700 | [diff] [blame] | 122 | |
| 123 | return 1; |
| 124 | } |
| 125 | |
| 126 | static inline int |
Alex Gartrell | 4fd9bee | 2015-08-26 09:40:29 -0700 | [diff] [blame] | 127 | ip_vs_fill_iph_skb_icmp(int af, const struct sk_buff *skb, int offset, |
| 128 | bool inverse, struct ip_vs_iphdr *iphdr) |
Alex Gartrell | b0e010c | 2015-08-26 09:40:28 -0700 | [diff] [blame] | 129 | { |
Alex Gartrell | 4fd9bee | 2015-08-26 09:40:29 -0700 | [diff] [blame] | 130 | int hdr_flags = IP_VS_HDR_ICMP; |
| 131 | |
| 132 | if (inverse) |
| 133 | hdr_flags |= IP_VS_HDR_INVERSE; |
| 134 | |
| 135 | return ip_vs_fill_iph_skb_off(af, skb, offset, hdr_flags, iphdr); |
| 136 | } |
| 137 | |
| 138 | static inline int |
| 139 | ip_vs_fill_iph_skb(int af, const struct sk_buff *skb, bool inverse, |
| 140 | struct ip_vs_iphdr *iphdr) |
| 141 | { |
| 142 | int hdr_flags = 0; |
| 143 | |
| 144 | if (inverse) |
| 145 | hdr_flags |= IP_VS_HDR_INVERSE; |
| 146 | |
| 147 | return ip_vs_fill_iph_skb_off(af, skb, skb_network_offset(skb), |
| 148 | hdr_flags, iphdr); |
| 149 | } |
| 150 | |
| 151 | static inline bool |
| 152 | ip_vs_iph_inverse(const struct ip_vs_iphdr *iph) |
| 153 | { |
| 154 | return !!(iph->hdr_flags & IP_VS_HDR_INVERSE); |
| 155 | } |
| 156 | |
| 157 | static inline bool |
| 158 | ip_vs_iph_icmp(const struct ip_vs_iphdr *iph) |
| 159 | { |
| 160 | return !!(iph->hdr_flags & IP_VS_HDR_ICMP); |
Jesper Dangaard Brouer | 63dca2c | 2012-09-26 14:06:41 +0200 | [diff] [blame] | 161 | } |
| 162 | |
Julius Volz | 64aae3c | 2008-09-02 15:55:34 +0200 | [diff] [blame] | 163 | static inline void ip_vs_addr_copy(int af, union nf_inet_addr *dst, |
| 164 | const union nf_inet_addr *src) |
| 165 | { |
| 166 | #ifdef CONFIG_IP_VS_IPV6 |
| 167 | if (af == AF_INET6) |
Alexey Dobriyan | 4e3fd7a | 2011-11-21 03:39:03 +0000 | [diff] [blame] | 168 | dst->in6 = src->in6; |
Julius Volz | 64aae3c | 2008-09-02 15:55:34 +0200 | [diff] [blame] | 169 | else |
| 170 | #endif |
| 171 | dst->ip = src->ip; |
| 172 | } |
| 173 | |
Julian Anastasov | 9a05475c | 2013-03-21 11:58:12 +0200 | [diff] [blame] | 174 | static inline void ip_vs_addr_set(int af, union nf_inet_addr *dst, |
| 175 | const union nf_inet_addr *src) |
| 176 | { |
| 177 | #ifdef CONFIG_IP_VS_IPV6 |
| 178 | if (af == AF_INET6) { |
| 179 | dst->in6 = src->in6; |
| 180 | return; |
| 181 | } |
| 182 | #endif |
| 183 | dst->ip = src->ip; |
| 184 | dst->all[1] = 0; |
| 185 | dst->all[2] = 0; |
| 186 | dst->all[3] = 0; |
| 187 | } |
| 188 | |
Julius Volz | 64aae3c | 2008-09-02 15:55:34 +0200 | [diff] [blame] | 189 | static inline int ip_vs_addr_equal(int af, const union nf_inet_addr *a, |
| 190 | const union nf_inet_addr *b) |
| 191 | { |
| 192 | #ifdef CONFIG_IP_VS_IPV6 |
| 193 | if (af == AF_INET6) |
| 194 | return ipv6_addr_equal(&a->in6, &b->in6); |
| 195 | #endif |
| 196 | return a->ip == b->ip; |
| 197 | } |
| 198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | #ifdef CONFIG_IP_VS_DEBUG |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 200 | #include <linux/net.h> |
| 201 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 202 | int ip_vs_get_debug_level(void); |
Julius Volz | c842a3a | 2008-09-02 15:55:35 +0200 | [diff] [blame] | 203 | |
| 204 | static inline const char *ip_vs_dbg_addr(int af, char *buf, size_t buf_len, |
| 205 | const union nf_inet_addr *addr, |
| 206 | int *idx) |
| 207 | { |
| 208 | int len; |
| 209 | #ifdef CONFIG_IP_VS_IPV6 |
| 210 | if (af == AF_INET6) |
Jesper Dangaard Brouer | 120b9c1 | 2012-09-26 14:05:53 +0200 | [diff] [blame] | 211 | len = snprintf(&buf[*idx], buf_len - *idx, "[%pI6c]", |
Harvey Harrison | 0c6ce78 | 2008-10-28 16:09:23 -0700 | [diff] [blame] | 212 | &addr->in6) + 1; |
Julius Volz | c842a3a | 2008-09-02 15:55:35 +0200 | [diff] [blame] | 213 | else |
| 214 | #endif |
Harvey Harrison | 3685f25d | 2008-10-31 00:56:49 -0700 | [diff] [blame] | 215 | len = snprintf(&buf[*idx], buf_len - *idx, "%pI4", |
| 216 | &addr->ip) + 1; |
Julius Volz | c842a3a | 2008-09-02 15:55:35 +0200 | [diff] [blame] | 217 | |
| 218 | *idx += len; |
| 219 | BUG_ON(*idx > buf_len + 1); |
| 220 | return &buf[*idx - len]; |
| 221 | } |
| 222 | |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 223 | #define IP_VS_DBG_BUF(level, msg, ...) \ |
| 224 | do { \ |
| 225 | char ip_vs_dbg_buf[160]; \ |
| 226 | int ip_vs_dbg_idx = 0; \ |
| 227 | if (level <= ip_vs_get_debug_level()) \ |
| 228 | printk(KERN_DEBUG pr_fmt(msg), ##__VA_ARGS__); \ |
| 229 | } while (0) |
| 230 | #define IP_VS_ERR_BUF(msg...) \ |
| 231 | do { \ |
| 232 | char ip_vs_dbg_buf[160]; \ |
| 233 | int ip_vs_dbg_idx = 0; \ |
| 234 | pr_err(msg); \ |
| 235 | } while (0) |
Julius Volz | c842a3a | 2008-09-02 15:55:35 +0200 | [diff] [blame] | 236 | |
| 237 | /* 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] | 238 | #define IP_VS_DBG_ADDR(af, addr) \ |
| 239 | ip_vs_dbg_addr(af, ip_vs_dbg_buf, \ |
| 240 | sizeof(ip_vs_dbg_buf), addr, \ |
| 241 | &ip_vs_dbg_idx) |
Julius Volz | c842a3a | 2008-09-02 15:55:35 +0200 | [diff] [blame] | 242 | |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 243 | #define IP_VS_DBG(level, msg, ...) \ |
| 244 | do { \ |
| 245 | if (level <= ip_vs_get_debug_level()) \ |
| 246 | printk(KERN_DEBUG pr_fmt(msg), ##__VA_ARGS__); \ |
| 247 | } while (0) |
| 248 | #define IP_VS_DBG_RL(msg, ...) \ |
| 249 | do { \ |
| 250 | if (net_ratelimit()) \ |
| 251 | printk(KERN_DEBUG pr_fmt(msg), ##__VA_ARGS__); \ |
| 252 | } while (0) |
Julian Anastasov | 0d79641 | 2010-10-17 16:46:17 +0300 | [diff] [blame] | 253 | #define IP_VS_DBG_PKT(level, af, pp, skb, ofs, msg) \ |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 254 | do { \ |
| 255 | if (level <= ip_vs_get_debug_level()) \ |
Julian Anastasov | 0d79641 | 2010-10-17 16:46:17 +0300 | [diff] [blame] | 256 | pp->debug_packet(af, pp, skb, ofs, msg); \ |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 257 | } while (0) |
Julian Anastasov | 0d79641 | 2010-10-17 16:46:17 +0300 | [diff] [blame] | 258 | #define IP_VS_DBG_RL_PKT(level, af, pp, skb, ofs, msg) \ |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 259 | do { \ |
| 260 | if (level <= ip_vs_get_debug_level() && \ |
| 261 | net_ratelimit()) \ |
Julian Anastasov | 0d79641 | 2010-10-17 16:46:17 +0300 | [diff] [blame] | 262 | pp->debug_packet(af, pp, skb, ofs, msg); \ |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 263 | } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | #else /* NO DEBUGGING at ALL */ |
Julius Volz | c842a3a | 2008-09-02 15:55:35 +0200 | [diff] [blame] | 265 | #define IP_VS_DBG_BUF(level, msg...) do {} while (0) |
| 266 | #define IP_VS_ERR_BUF(msg...) do {} while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | #define IP_VS_DBG(level, msg...) do {} while (0) |
| 268 | #define IP_VS_DBG_RL(msg...) do {} while (0) |
Julian Anastasov | 0d79641 | 2010-10-17 16:46:17 +0300 | [diff] [blame] | 269 | #define IP_VS_DBG_PKT(level, af, pp, skb, ofs, msg) do {} while (0) |
| 270 | #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] | 271 | #endif |
| 272 | |
| 273 | #define IP_VS_BUG() BUG() |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 274 | #define IP_VS_ERR_RL(msg, ...) \ |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 275 | do { \ |
| 276 | if (net_ratelimit()) \ |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 277 | pr_err(msg, ##__VA_ARGS__); \ |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 278 | } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | |
| 280 | #ifdef CONFIG_IP_VS_DEBUG |
| 281 | #define EnterFunction(level) \ |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 282 | do { \ |
| 283 | if (level <= ip_vs_get_debug_level()) \ |
| 284 | printk(KERN_DEBUG \ |
| 285 | pr_fmt("Enter: %s, %s line %i\n"), \ |
| 286 | __func__, __FILE__, __LINE__); \ |
| 287 | } while (0) |
| 288 | #define LeaveFunction(level) \ |
| 289 | do { \ |
| 290 | if (level <= ip_vs_get_debug_level()) \ |
| 291 | printk(KERN_DEBUG \ |
| 292 | pr_fmt("Leave: %s, %s line %i\n"), \ |
| 293 | __func__, __FILE__, __LINE__); \ |
| 294 | } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | #else |
| 296 | #define EnterFunction(level) do {} while (0) |
| 297 | #define LeaveFunction(level) do {} while (0) |
| 298 | #endif |
| 299 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 300 | /* The port number of FTP service (in network order). */ |
Harvey Harrison | f3a7c66 | 2009-02-14 22:58:35 -0800 | [diff] [blame] | 301 | #define FTPPORT cpu_to_be16(21) |
| 302 | #define FTPDATA cpu_to_be16(20) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 304 | /* TCP State Values */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | enum { |
| 306 | IP_VS_TCP_S_NONE = 0, |
| 307 | IP_VS_TCP_S_ESTABLISHED, |
| 308 | IP_VS_TCP_S_SYN_SENT, |
| 309 | IP_VS_TCP_S_SYN_RECV, |
| 310 | IP_VS_TCP_S_FIN_WAIT, |
| 311 | IP_VS_TCP_S_TIME_WAIT, |
| 312 | IP_VS_TCP_S_CLOSE, |
| 313 | IP_VS_TCP_S_CLOSE_WAIT, |
| 314 | IP_VS_TCP_S_LAST_ACK, |
| 315 | IP_VS_TCP_S_LISTEN, |
| 316 | IP_VS_TCP_S_SYNACK, |
| 317 | IP_VS_TCP_S_LAST |
| 318 | }; |
| 319 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 320 | /* UDP State Values */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | enum { |
| 322 | IP_VS_UDP_S_NORMAL, |
| 323 | IP_VS_UDP_S_LAST, |
| 324 | }; |
| 325 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 326 | /* ICMP State Values */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | enum { |
| 328 | IP_VS_ICMP_S_NORMAL, |
| 329 | IP_VS_ICMP_S_LAST, |
| 330 | }; |
| 331 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 332 | /* SCTP State Values */ |
Venkata Mohan Reddy | 2906f66 | 2010-02-18 12:31:05 +0100 | [diff] [blame] | 333 | enum ip_vs_sctp_states { |
| 334 | IP_VS_SCTP_S_NONE, |
Julian Anastasov | 61e7c42 | 2013-06-18 10:08:07 +0300 | [diff] [blame] | 335 | IP_VS_SCTP_S_INIT1, |
| 336 | IP_VS_SCTP_S_INIT, |
| 337 | IP_VS_SCTP_S_COOKIE_SENT, |
| 338 | IP_VS_SCTP_S_COOKIE_REPLIED, |
| 339 | IP_VS_SCTP_S_COOKIE_WAIT, |
| 340 | IP_VS_SCTP_S_COOKIE, |
| 341 | IP_VS_SCTP_S_COOKIE_ECHOED, |
Venkata Mohan Reddy | 2906f66 | 2010-02-18 12:31:05 +0100 | [diff] [blame] | 342 | IP_VS_SCTP_S_ESTABLISHED, |
Julian Anastasov | 61e7c42 | 2013-06-18 10:08:07 +0300 | [diff] [blame] | 343 | IP_VS_SCTP_S_SHUTDOWN_SENT, |
| 344 | IP_VS_SCTP_S_SHUTDOWN_RECEIVED, |
| 345 | IP_VS_SCTP_S_SHUTDOWN_ACK_SENT, |
| 346 | IP_VS_SCTP_S_REJECTED, |
Venkata Mohan Reddy | 2906f66 | 2010-02-18 12:31:05 +0100 | [diff] [blame] | 347 | IP_VS_SCTP_S_CLOSED, |
| 348 | IP_VS_SCTP_S_LAST |
| 349 | }; |
| 350 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 351 | /* Delta sequence info structure |
| 352 | * Each ip_vs_conn has 2 (output AND input seq. changes). |
| 353 | * Only used in the VS/NAT. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | */ |
| 355 | struct ip_vs_seq { |
| 356 | __u32 init_seq; /* Add delta from this seq */ |
| 357 | __u32 delta; /* Delta in sequence numbers */ |
| 358 | __u32 previous_delta; /* Delta in sequence numbers |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 359 | * before last resized pkt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | }; |
| 361 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 362 | /* counters per cpu */ |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 363 | struct ip_vs_counters { |
Julian Anastasov | cd67cd5 | 2015-02-06 09:44:44 +0200 | [diff] [blame] | 364 | __u64 conns; /* connections scheduled */ |
| 365 | __u64 inpkts; /* incoming packets */ |
| 366 | __u64 outpkts; /* outgoing packets */ |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 367 | __u64 inbytes; /* incoming bytes */ |
| 368 | __u64 outbytes; /* outgoing bytes */ |
| 369 | }; |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 370 | /* Stats per cpu */ |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 371 | struct ip_vs_cpu_stats { |
Julian Anastasov | cd67cd5 | 2015-02-06 09:44:44 +0200 | [diff] [blame] | 372 | struct ip_vs_counters cnt; |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 373 | struct u64_stats_sync syncp; |
| 374 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 376 | /* IPVS statistics objects */ |
Sven Wegener | 3a14a31 | 2008-08-10 18:24:41 +0000 | [diff] [blame] | 377 | struct ip_vs_estimator { |
| 378 | struct list_head list; |
| 379 | |
| 380 | u64 last_inbytes; |
| 381 | u64 last_outbytes; |
Julian Anastasov | cd67cd5 | 2015-02-06 09:44:44 +0200 | [diff] [blame] | 382 | u64 last_conns; |
| 383 | u64 last_inpkts; |
| 384 | u64 last_outpkts; |
Sven Wegener | 3a14a31 | 2008-08-10 18:24:41 +0000 | [diff] [blame] | 385 | |
Julian Anastasov | cd67cd5 | 2015-02-06 09:44:44 +0200 | [diff] [blame] | 386 | u64 cps; |
| 387 | u64 inpps; |
| 388 | u64 outpps; |
| 389 | u64 inbps; |
| 390 | u64 outbps; |
| 391 | }; |
| 392 | |
| 393 | /* |
| 394 | * IPVS statistics object, 64-bit kernel version of struct ip_vs_stats_user |
| 395 | */ |
| 396 | struct ip_vs_kstats { |
| 397 | u64 conns; /* connections scheduled */ |
| 398 | u64 inpkts; /* incoming packets */ |
| 399 | u64 outpkts; /* outgoing packets */ |
| 400 | u64 inbytes; /* incoming bytes */ |
| 401 | u64 outbytes; /* outgoing bytes */ |
| 402 | |
| 403 | u64 cps; /* current connection rate */ |
| 404 | u64 inpps; /* current in packet rate */ |
| 405 | u64 outpps; /* current out packet rate */ |
| 406 | u64 inbps; /* current in byte rate */ |
| 407 | u64 outbps; /* current out byte rate */ |
Sven Wegener | 3a14a31 | 2008-08-10 18:24:41 +0000 | [diff] [blame] | 408 | }; |
| 409 | |
Eric Dumazet | fd2c3ef | 2009-11-03 03:26:03 +0000 | [diff] [blame] | 410 | struct ip_vs_stats { |
Julian Anastasov | cd67cd5 | 2015-02-06 09:44:44 +0200 | [diff] [blame] | 411 | struct ip_vs_kstats kstats; /* kernel statistics */ |
Sven Wegener | e9c0ce2 | 2008-09-08 13:39:04 +0200 | [diff] [blame] | 412 | struct ip_vs_estimator est; /* estimator */ |
Julian Anastasov | b962abd | 2013-03-09 23:25:08 +0200 | [diff] [blame] | 413 | struct ip_vs_cpu_stats __percpu *cpustats; /* per cpu counters */ |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 414 | spinlock_t lock; /* spin lock */ |
Julian Anastasov | cd67cd5 | 2015-02-06 09:44:44 +0200 | [diff] [blame] | 415 | struct ip_vs_kstats kstats0; /* reset values */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | }; |
| 417 | |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 418 | struct dst_entry; |
| 419 | struct iphdr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | struct ip_vs_conn; |
| 421 | struct ip_vs_app; |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 422 | struct sk_buff; |
Hans Schillstrom | 252c641 | 2011-01-03 14:44:46 +0100 | [diff] [blame] | 423 | struct ip_vs_proto_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | |
| 425 | struct ip_vs_protocol { |
| 426 | struct ip_vs_protocol *next; |
| 427 | char *name; |
Julian Anastasov | 2ad17de | 2008-04-29 03:21:23 -0700 | [diff] [blame] | 428 | u16 protocol; |
| 429 | u16 num_states; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | int dont_defrag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | |
| 432 | void (*init)(struct ip_vs_protocol *pp); |
| 433 | |
| 434 | void (*exit)(struct ip_vs_protocol *pp); |
| 435 | |
Eric W. Biederman | 1281a9c2 | 2015-09-21 13:02:36 -0500 | [diff] [blame] | 436 | int (*init_netns)(struct netns_ipvs *ipvs, struct ip_vs_proto_data *pd); |
Hans Schillstrom | 252c641 | 2011-01-03 14:44:46 +0100 | [diff] [blame] | 437 | |
Eric W. Biederman | 1281a9c2 | 2015-09-21 13:02:36 -0500 | [diff] [blame] | 438 | void (*exit_netns)(struct netns_ipvs *ipvs, struct ip_vs_proto_data *pd); |
Hans Schillstrom | 252c641 | 2011-01-03 14:44:46 +0100 | [diff] [blame] | 439 | |
Eric W. Biederman | d8f44c3 | 2015-09-21 13:02:43 -0500 | [diff] [blame] | 440 | int (*conn_schedule)(struct netns_ipvs *ipvs, |
| 441 | int af, struct sk_buff *skb, |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 442 | struct ip_vs_proto_data *pd, |
Jesper Dangaard Brouer | d4383f0 | 2012-09-26 14:07:17 +0200 | [diff] [blame] | 443 | int *verdict, struct ip_vs_conn **cpp, |
| 444 | struct ip_vs_iphdr *iph); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | |
| 446 | struct ip_vs_conn * |
Eric W. Biederman | ab16197 | 2015-09-21 13:02:38 -0500 | [diff] [blame] | 447 | (*conn_in_get)(struct netns_ipvs *ipvs, |
| 448 | int af, |
Julius Volz | 51ef348 | 2008-09-02 15:55:40 +0200 | [diff] [blame] | 449 | const struct sk_buff *skb, |
Alex Gartrell | 802c41a | 2015-08-26 09:40:32 -0700 | [diff] [blame] | 450 | const struct ip_vs_iphdr *iph); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | |
| 452 | struct ip_vs_conn * |
Eric W. Biederman | 0cf705c8c | 2015-09-21 13:02:39 -0500 | [diff] [blame] | 453 | (*conn_out_get)(struct netns_ipvs *ipvs, |
| 454 | int af, |
Julius Volz | 51ef348 | 2008-09-02 15:55:40 +0200 | [diff] [blame] | 455 | const struct sk_buff *skb, |
Alex Gartrell | 802c41a | 2015-08-26 09:40:32 -0700 | [diff] [blame] | 456 | const struct ip_vs_iphdr *iph); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | |
Jesper Dangaard Brouer | d4383f0 | 2012-09-26 14:07:17 +0200 | [diff] [blame] | 458 | int (*snat_handler)(struct sk_buff *skb, struct ip_vs_protocol *pp, |
| 459 | struct ip_vs_conn *cp, struct ip_vs_iphdr *iph); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | |
Jesper Dangaard Brouer | d4383f0 | 2012-09-26 14:07:17 +0200 | [diff] [blame] | 461 | int (*dnat_handler)(struct sk_buff *skb, struct ip_vs_protocol *pp, |
| 462 | struct ip_vs_conn *cp, struct ip_vs_iphdr *iph); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | |
Julius Volz | 51ef348 | 2008-09-02 15:55:40 +0200 | [diff] [blame] | 464 | int (*csum_check)(int af, struct sk_buff *skb, |
| 465 | struct ip_vs_protocol *pp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | |
| 467 | const char *(*state_name)(int state); |
| 468 | |
Simon Horman | 4a516f1 | 2011-09-16 14:11:49 +0900 | [diff] [blame] | 469 | void (*state_transition)(struct ip_vs_conn *cp, int direction, |
| 470 | const struct sk_buff *skb, |
| 471 | struct ip_vs_proto_data *pd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | |
Eric W. Biederman | 1964891 | 2015-09-21 13:02:29 -0500 | [diff] [blame] | 473 | int (*register_app)(struct netns_ipvs *ipvs, struct ip_vs_app *inc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | |
Eric W. Biederman | 1964891 | 2015-09-21 13:02:29 -0500 | [diff] [blame] | 475 | void (*unregister_app)(struct netns_ipvs *ipvs, struct ip_vs_app *inc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | |
| 477 | int (*app_conn_bind)(struct ip_vs_conn *cp); |
| 478 | |
Julian Anastasov | 0d79641 | 2010-10-17 16:46:17 +0300 | [diff] [blame] | 479 | void (*debug_packet)(int af, struct ip_vs_protocol *pp, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | const struct sk_buff *skb, |
| 481 | int offset, |
| 482 | const char *msg); |
| 483 | |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 484 | void (*timeout_change)(struct ip_vs_proto_data *pd, int flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | }; |
| 486 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 487 | /* protocol data per netns */ |
Hans Schillstrom | 252c641 | 2011-01-03 14:44:46 +0100 | [diff] [blame] | 488 | struct ip_vs_proto_data { |
| 489 | struct ip_vs_proto_data *next; |
| 490 | struct ip_vs_protocol *pp; |
| 491 | int *timeout_table; /* protocol timeout table */ |
| 492 | atomic_t appcnt; /* counter of proto app incs. */ |
| 493 | struct tcp_states_t *tcp_state_table; |
| 494 | }; |
| 495 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 496 | struct ip_vs_protocol *ip_vs_proto_get(unsigned short proto); |
Eric W. Biederman | 18d6ade | 2015-09-21 13:02:01 -0500 | [diff] [blame] | 497 | 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] | 498 | unsigned short proto); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | |
Simon Horman | f11017e | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 500 | struct ip_vs_conn_param { |
Eric W. Biederman | e64e2b4 | 2015-09-21 13:01:42 -0500 | [diff] [blame] | 501 | struct netns_ipvs *ipvs; |
Simon Horman | f11017e | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 502 | const union nf_inet_addr *caddr; |
| 503 | const union nf_inet_addr *vaddr; |
| 504 | __be16 cport; |
| 505 | __be16 vport; |
| 506 | __u16 protocol; |
| 507 | u16 af; |
Simon Horman | 8599928 | 2010-08-22 21:37:53 +0900 | [diff] [blame] | 508 | |
| 509 | const struct ip_vs_pe *pe; |
| 510 | char *pe_data; |
| 511 | __u8 pe_data_len; |
Simon Horman | f11017e | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 512 | }; |
| 513 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 514 | /* IP_VS structure allocated for each dynamically scheduled connection */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | struct ip_vs_conn { |
Changli Gao | 731109e | 2011-02-19 18:05:08 +0800 | [diff] [blame] | 516 | struct hlist_node c_list; /* hashed list heads */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | /* Protocol, addresses and port numbers */ |
Hans Schillstrom | 6e67e58 | 2011-01-03 14:44:57 +0100 | [diff] [blame] | 518 | __be16 cport; |
Hans Schillstrom | 6e67e58 | 2011-01-03 14:44:57 +0100 | [diff] [blame] | 519 | __be16 dport; |
Julian Anastasov | 1845ed0 | 2013-03-21 11:58:11 +0200 | [diff] [blame] | 520 | __be16 vport; |
| 521 | u16 af; /* address family */ |
Hans Schillstrom | 6e67e58 | 2011-01-03 14:44:57 +0100 | [diff] [blame] | 522 | union nf_inet_addr caddr; /* client address */ |
| 523 | union nf_inet_addr vaddr; /* virtual address */ |
| 524 | union nf_inet_addr daddr; /* destination address */ |
| 525 | volatile __u32 flags; /* status flags */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | __u16 protocol; /* Which protocol (TCP/UDP) */ |
Alex Gartrell | ba38528 | 2014-09-09 16:40:23 -0700 | [diff] [blame] | 527 | __u16 daf; /* Address family of the dest */ |
Eric W. Biederman | 58dbc6f | 2015-09-21 13:01:41 -0500 | [diff] [blame] | 528 | struct netns_ipvs *ipvs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | |
| 530 | /* counter and timer */ |
Reshetova, Elena | b54ab92 | 2017-03-16 10:03:34 +0200 | [diff] [blame] | 531 | refcount_t refcnt; /* reference count */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | struct timer_list timer; /* Expiration timer */ |
| 533 | volatile unsigned long timeout; /* timeout */ |
| 534 | |
| 535 | /* Flags and state transition */ |
| 536 | spinlock_t lock; /* lock for state transition */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | volatile __u16 state; /* state info */ |
Rumen G. Bogdanovski | efac527 | 2007-11-07 02:36:55 -0800 | [diff] [blame] | 538 | volatile __u16 old_state; /* old state, to be used for |
| 539 | * state transition triggerd |
| 540 | * synchronization |
| 541 | */ |
Julian Anastasov | 1845ed0 | 2013-03-21 11:58:11 +0200 | [diff] [blame] | 542 | __u32 fwmark; /* Fire wall mark from skb */ |
Julian Anastasov | 749c42b | 2012-04-24 23:46:40 +0300 | [diff] [blame] | 543 | unsigned long sync_endtime; /* jiffies + sent_retries */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | |
| 545 | /* Control members */ |
| 546 | struct ip_vs_conn *control; /* Master control connection */ |
| 547 | atomic_t n_control; /* Number of controlled ones */ |
| 548 | struct ip_vs_dest *dest; /* real server */ |
| 549 | atomic_t in_pkts; /* incoming packet counter */ |
| 550 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 551 | /* Packet transmitter for different forwarding methods. If it |
| 552 | * mangles the packet, it must return NF_DROP or better NF_STOLEN, |
| 553 | * otherwise this must be changed to a sk_buff **. |
| 554 | * NF_ACCEPT can be returned when destination is local. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | */ |
| 556 | 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] | 557 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | |
| 559 | /* Note: we can group the following members into a structure, |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 560 | * in order to save more space, and the following members are |
| 561 | * only used in VS/NAT anyway |
| 562 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | struct ip_vs_app *app; /* bound ip_vs_app object */ |
| 564 | void *app_data; /* Application private data */ |
| 565 | struct ip_vs_seq in_seq; /* incoming seq. struct */ |
| 566 | struct ip_vs_seq out_seq; /* outgoing seq. struct */ |
Simon Horman | 8599928 | 2010-08-22 21:37:53 +0900 | [diff] [blame] | 567 | |
Simon Horman | e9e5eee | 2010-11-08 20:05:57 +0900 | [diff] [blame] | 568 | const struct ip_vs_pe *pe; |
Simon Horman | 8599928 | 2010-08-22 21:37:53 +0900 | [diff] [blame] | 569 | char *pe_data; |
| 570 | __u8 pe_data_len; |
Julian Anastasov | 088339a | 2013-03-21 11:58:10 +0200 | [diff] [blame] | 571 | |
| 572 | struct rcu_head rcu_head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | }; |
| 574 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 575 | /* Extended internal versions of struct ip_vs_service_user and ip_vs_dest_user |
| 576 | * for IPv6 support. |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 577 | * |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 578 | * We need these to conveniently pass around service and destination |
| 579 | * options, but unfortunately, we also need to keep the old definitions to |
| 580 | * maintain userspace backwards compatibility for the setsockopt interface. |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 581 | */ |
| 582 | struct ip_vs_service_user_kern { |
| 583 | /* virtual service addresses */ |
| 584 | u16 af; |
| 585 | u16 protocol; |
| 586 | union nf_inet_addr addr; /* virtual ip address */ |
Julian Anastasov | 0a92586 | 2013-04-17 23:50:49 +0300 | [diff] [blame] | 587 | __be16 port; |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 588 | u32 fwmark; /* firwall mark of service */ |
| 589 | |
| 590 | /* virtual service options */ |
| 591 | char *sched_name; |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 592 | char *pe_name; |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 593 | unsigned int flags; /* virtual service flags */ |
| 594 | unsigned int timeout; /* persistent timeout in sec */ |
Julian Anastasov | 0a92586 | 2013-04-17 23:50:49 +0300 | [diff] [blame] | 595 | __be32 netmask; /* persistent netmask or plen */ |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 596 | }; |
| 597 | |
| 598 | |
| 599 | struct ip_vs_dest_user_kern { |
| 600 | /* destination server address */ |
| 601 | union nf_inet_addr addr; |
Julian Anastasov | 0a92586 | 2013-04-17 23:50:49 +0300 | [diff] [blame] | 602 | __be16 port; |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 603 | |
| 604 | /* real server options */ |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 605 | unsigned int conn_flags; /* connection flags */ |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 606 | int weight; /* destination weight */ |
| 607 | |
| 608 | /* thresholds for active connections */ |
| 609 | u32 u_threshold; /* upper threshold */ |
| 610 | u32 l_threshold; /* lower threshold */ |
Alex Gartrell | 6cff339 | 2014-09-09 16:40:20 -0700 | [diff] [blame] | 611 | |
| 612 | /* Address family of addr */ |
| 613 | u16 af; |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 614 | }; |
| 615 | |
| 616 | |
| 617 | /* |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 618 | * The information about the virtual service offered to the net and the |
| 619 | * forwarding entries. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | */ |
| 621 | struct ip_vs_service { |
Julian Anastasov | ceec4c3 | 2013-03-22 11:46:53 +0200 | [diff] [blame] | 622 | struct hlist_node s_list; /* for normal service table */ |
| 623 | struct hlist_node f_list; /* for fwmark-based service table */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | atomic_t refcnt; /* reference counter */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | |
Julius Volz | e7ade46 | 2008-09-02 15:55:33 +0200 | [diff] [blame] | 626 | u16 af; /* address family */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | __u16 protocol; /* which protocol (TCP/UDP) */ |
Julius Volz | e7ade46 | 2008-09-02 15:55:33 +0200 | [diff] [blame] | 628 | union nf_inet_addr addr; /* IP address for virtual service */ |
Al Viro | 014d730 | 2006-09-28 14:29:52 -0700 | [diff] [blame] | 629 | __be16 port; /* port number for the service */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | __u32 fwmark; /* firewall mark of the service */ |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 631 | unsigned int flags; /* service status flags */ |
| 632 | unsigned int timeout; /* persistent timeout in ticks */ |
Julian Anastasov | 0a92586 | 2013-04-17 23:50:49 +0300 | [diff] [blame] | 633 | __be32 netmask; /* grouping granularity, mask/plen */ |
Eric W. Biederman | 3109d2f | 2015-09-21 13:01:44 -0500 | [diff] [blame] | 634 | struct netns_ipvs *ipvs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | |
| 636 | struct list_head destinations; /* real server d-linked list */ |
| 637 | __u32 num_dests; /* number of servers */ |
| 638 | struct ip_vs_stats stats; /* statistics for the service */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | |
| 640 | /* for scheduling */ |
Julian Anastasov | ceec4c3 | 2013-03-22 11:46:53 +0200 | [diff] [blame] | 641 | struct ip_vs_scheduler __rcu *scheduler; /* bound scheduler object */ |
Julian Anastasov | ba3a3ce | 2013-03-22 11:46:51 +0200 | [diff] [blame] | 642 | spinlock_t sched_lock; /* lock sched_data */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | void *sched_data; /* scheduler application data */ |
Simon Horman | 8599928 | 2010-08-22 21:37:53 +0900 | [diff] [blame] | 644 | |
| 645 | /* alternate persistence engine */ |
Julian Anastasov | ceec4c3 | 2013-03-22 11:46:53 +0200 | [diff] [blame] | 646 | struct ip_vs_pe __rcu *pe; |
| 647 | |
| 648 | struct rcu_head rcu_head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | }; |
| 650 | |
Julian Anastasov | 026ace0 | 2013-03-21 11:58:06 +0200 | [diff] [blame] | 651 | /* Information for cached dst */ |
| 652 | struct ip_vs_dest_dst { |
| 653 | struct dst_entry *dst_cache; /* destination cache entry */ |
| 654 | u32 dst_cookie; |
| 655 | union nf_inet_addr dst_saddr; |
| 656 | struct rcu_head rcu_head; |
| 657 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 659 | /* The real server destination forwarding entry with ip address, port number, |
| 660 | * and so on. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | */ |
| 662 | struct ip_vs_dest { |
| 663 | struct list_head n_list; /* for the dests in the service */ |
Julian Anastasov | 276472e | 2013-03-21 11:58:08 +0200 | [diff] [blame] | 664 | struct hlist_node d_list; /* for table with all the dests */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | |
Julius Volz | e7ade46 | 2008-09-02 15:55:33 +0200 | [diff] [blame] | 666 | u16 af; /* address family */ |
Al Viro | 014d730 | 2006-09-28 14:29:52 -0700 | [diff] [blame] | 667 | __be16 port; /* port number of the server */ |
Hans Schillstrom | f2431e6 | 2011-01-03 14:45:00 +0100 | [diff] [blame] | 668 | union nf_inet_addr addr; /* IP address of the server */ |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 669 | volatile unsigned int flags; /* dest status flags */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | atomic_t conn_flags; /* flags to copy to conn */ |
| 671 | atomic_t weight; /* server weight */ |
| 672 | |
Reshetova, Elena | b54ab92 | 2017-03-16 10:03:34 +0200 | [diff] [blame] | 673 | refcount_t refcnt; /* reference counter */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | struct ip_vs_stats stats; /* statistics */ |
Julian Anastasov | bcbde4c | 2013-09-12 11:21:07 +0300 | [diff] [blame] | 675 | unsigned long idle_start; /* start time, jiffies */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | |
| 677 | /* connection counters and thresholds */ |
| 678 | atomic_t activeconns; /* active connections */ |
| 679 | atomic_t inactconns; /* inactive connections */ |
| 680 | atomic_t persistconns; /* persistent connections */ |
| 681 | __u32 u_threshold; /* upper threshold */ |
| 682 | __u32 l_threshold; /* lower threshold */ |
| 683 | |
| 684 | /* for destination cache */ |
| 685 | spinlock_t dst_lock; /* lock of dst_cache */ |
Julian Anastasov | 026ace0 | 2013-03-21 11:58:06 +0200 | [diff] [blame] | 686 | struct ip_vs_dest_dst __rcu *dest_dst; /* cached dst info */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | |
| 688 | /* for virtual service */ |
Julian Anastasov | bcbde4c | 2013-09-12 11:21:07 +0300 | [diff] [blame] | 689 | struct ip_vs_service __rcu *svc; /* service it belongs to */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | __u16 protocol; /* which protocol (TCP/UDP) */ |
Al Viro | 014d730 | 2006-09-28 14:29:52 -0700 | [diff] [blame] | 691 | __be16 vport; /* virtual port number */ |
Hans Schillstrom | f2431e6 | 2011-01-03 14:45:00 +0100 | [diff] [blame] | 692 | union nf_inet_addr vaddr; /* virtual IP address */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | __u32 vfwmark; /* firewall mark of service */ |
Julian Anastasov | 276472e | 2013-03-21 11:58:08 +0200 | [diff] [blame] | 694 | |
Julian Anastasov | 578bc3e | 2013-03-22 11:46:49 +0200 | [diff] [blame] | 695 | struct list_head t_list; /* in dest_trash */ |
Julian Anastasov | 276472e | 2013-03-21 11:58:08 +0200 | [diff] [blame] | 696 | unsigned int in_rs_table:1; /* we are in rs_table */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | }; |
| 698 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 699 | /* The scheduler object */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | struct ip_vs_scheduler { |
| 701 | struct list_head n_list; /* d-linked list head */ |
| 702 | char *name; /* scheduler name */ |
| 703 | atomic_t refcnt; /* reference counter */ |
| 704 | struct module *module; /* THIS_MODULE/NULL */ |
| 705 | |
| 706 | /* scheduler initializing service */ |
| 707 | int (*init_service)(struct ip_vs_service *svc); |
| 708 | /* scheduling service finish */ |
Julian Anastasov | ed3ffc4 | 2013-03-22 11:46:50 +0200 | [diff] [blame] | 709 | void (*done_service)(struct ip_vs_service *svc); |
Julian Anastasov | 6b6df46 | 2013-03-22 11:46:37 +0200 | [diff] [blame] | 710 | /* dest is linked */ |
| 711 | int (*add_dest)(struct ip_vs_service *svc, struct ip_vs_dest *dest); |
| 712 | /* dest is unlinked */ |
| 713 | int (*del_dest)(struct ip_vs_service *svc, struct ip_vs_dest *dest); |
| 714 | /* dest is updated */ |
| 715 | 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] | 716 | |
| 717 | /* selecting a server from the given service */ |
| 718 | struct ip_vs_dest* (*schedule)(struct ip_vs_service *svc, |
Julian Anastasov | bba54de | 2013-06-16 09:09:36 +0300 | [diff] [blame] | 719 | const struct sk_buff *skb, |
| 720 | struct ip_vs_iphdr *iph); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | }; |
| 722 | |
Simon Horman | 8599928 | 2010-08-22 21:37:53 +0900 | [diff] [blame] | 723 | /* The persistence engine object */ |
| 724 | struct ip_vs_pe { |
| 725 | struct list_head n_list; /* d-linked list head */ |
| 726 | char *name; /* scheduler name */ |
| 727 | atomic_t refcnt; /* reference counter */ |
| 728 | struct module *module; /* THIS_MODULE/NULL */ |
| 729 | |
| 730 | /* get the connection template, if any */ |
| 731 | int (*fill_param)(struct ip_vs_conn_param *p, struct sk_buff *skb); |
| 732 | bool (*ct_match)(const struct ip_vs_conn_param *p, |
| 733 | struct ip_vs_conn *ct); |
| 734 | u32 (*hashkey_raw)(const struct ip_vs_conn_param *p, u32 initval, |
| 735 | bool inverse); |
Simon Horman | a3c918a | 2010-08-22 21:37:53 +0900 | [diff] [blame] | 736 | int (*show_pe_data)(const struct ip_vs_conn *cp, char *buf); |
Marco Angaroni | 39b9722 | 2016-04-05 18:26:29 +0200 | [diff] [blame] | 737 | /* create connections for real-server outgoing packets */ |
| 738 | struct ip_vs_conn* (*conn_out)(struct ip_vs_service *svc, |
| 739 | struct ip_vs_dest *dest, |
| 740 | struct sk_buff *skb, |
| 741 | const struct ip_vs_iphdr *iph, |
| 742 | __be16 dport, __be16 cport); |
Simon Horman | 8599928 | 2010-08-22 21:37:53 +0900 | [diff] [blame] | 743 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 745 | /* The application module object (a.k.a. app incarnation) */ |
Eric Dumazet | fd2c3ef | 2009-11-03 03:26:03 +0000 | [diff] [blame] | 746 | struct ip_vs_app { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | struct list_head a_list; /* member in app list */ |
| 748 | int type; /* IP_VS_APP_TYPE_xxx */ |
| 749 | char *name; /* application module name */ |
| 750 | __u16 protocol; |
| 751 | struct module *module; /* THIS_MODULE/NULL */ |
| 752 | struct list_head incs_list; /* list of incarnations */ |
| 753 | |
| 754 | /* members for application incarnations */ |
| 755 | struct list_head p_list; /* member in proto app list */ |
| 756 | struct ip_vs_app *app; /* its real application */ |
Al Viro | 014d730 | 2006-09-28 14:29:52 -0700 | [diff] [blame] | 757 | __be16 port; /* port number in net order */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | atomic_t usecnt; /* usage counter */ |
Julian Anastasov | 363c97d | 2013-03-21 11:58:07 +0200 | [diff] [blame] | 759 | struct rcu_head rcu_head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 761 | /* output hook: Process packet in inout direction, diff set for TCP. |
Julian Anastasov | 8b27b10 | 2010-10-17 16:17:20 +0300 | [diff] [blame] | 762 | * Return: 0=Error, 1=Payload Not Mangled/Mangled but checksum is ok, |
| 763 | * 2=Mangled but checksum was not updated |
| 764 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | int (*pkt_out)(struct ip_vs_app *, struct ip_vs_conn *, |
Herbert Xu | 3db05fea | 2007-10-15 00:53:15 -0700 | [diff] [blame] | 766 | struct sk_buff *, int *diff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 768 | /* input hook: Process packet in outin direction, diff set for TCP. |
Julian Anastasov | 8b27b10 | 2010-10-17 16:17:20 +0300 | [diff] [blame] | 769 | * Return: 0=Error, 1=Payload Not Mangled/Mangled but checksum is ok, |
| 770 | * 2=Mangled but checksum was not updated |
| 771 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | int (*pkt_in)(struct ip_vs_app *, struct ip_vs_conn *, |
Herbert Xu | 3db05fea | 2007-10-15 00:53:15 -0700 | [diff] [blame] | 773 | struct sk_buff *, int *diff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | |
| 775 | /* ip_vs_app initializer */ |
| 776 | int (*init_conn)(struct ip_vs_app *, struct ip_vs_conn *); |
| 777 | |
| 778 | /* ip_vs_app finish */ |
| 779 | int (*done_conn)(struct ip_vs_app *, struct ip_vs_conn *); |
| 780 | |
| 781 | |
| 782 | /* not used now */ |
| 783 | int (*bind_conn)(struct ip_vs_app *, struct ip_vs_conn *, |
| 784 | struct ip_vs_protocol *); |
| 785 | |
| 786 | void (*unbind_conn)(struct ip_vs_app *, struct ip_vs_conn *); |
| 787 | |
| 788 | int * timeout_table; |
| 789 | int * timeouts; |
| 790 | int timeouts_size; |
| 791 | |
| 792 | int (*conn_schedule)(struct sk_buff *skb, struct ip_vs_app *app, |
| 793 | int *verdict, struct ip_vs_conn **cpp); |
| 794 | |
| 795 | struct ip_vs_conn * |
| 796 | (*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] | 797 | const struct iphdr *iph, int inverse); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | |
| 799 | struct ip_vs_conn * |
| 800 | (*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] | 801 | const struct iphdr *iph, int inverse); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | |
| 803 | int (*state_transition)(struct ip_vs_conn *cp, int direction, |
| 804 | const struct sk_buff *skb, |
| 805 | struct ip_vs_app *app); |
| 806 | |
| 807 | void (*timeout_change)(struct ip_vs_app *app, int flags); |
| 808 | }; |
| 809 | |
Pablo Neira Ayuso | f73181c | 2012-05-08 19:40:30 +0200 | [diff] [blame] | 810 | struct ipvs_master_sync_state { |
| 811 | struct list_head sync_queue; |
| 812 | struct ip_vs_sync_buff *sync_buff; |
Zhang Yanfei | 0799567 | 2013-04-29 11:55:10 -0700 | [diff] [blame] | 813 | unsigned long sync_queue_len; |
Pablo Neira Ayuso | f73181c | 2012-05-08 19:40:30 +0200 | [diff] [blame] | 814 | unsigned int sync_queue_delay; |
| 815 | struct task_struct *master_thread; |
| 816 | struct delayed_work master_wakeup_work; |
| 817 | struct netns_ipvs *ipvs; |
| 818 | }; |
| 819 | |
Julian Anastasov | 578bc3e | 2013-03-22 11:46:49 +0200 | [diff] [blame] | 820 | /* How much time to keep dests in trash */ |
| 821 | #define IP_VS_DEST_TRASH_PERIOD (120 * HZ) |
| 822 | |
Julian Anastasov | e4ff675 | 2015-07-26 15:03:27 +0300 | [diff] [blame] | 823 | struct ipvs_sync_daemon_cfg { |
Julian Anastasov | d332881 | 2015-07-26 15:03:28 +0300 | [diff] [blame] | 824 | union nf_inet_addr mcast_group; |
Julian Anastasov | e4ff675 | 2015-07-26 15:03:27 +0300 | [diff] [blame] | 825 | int syncid; |
| 826 | u16 sync_maxlen; |
Julian Anastasov | d332881 | 2015-07-26 15:03:28 +0300 | [diff] [blame] | 827 | u16 mcast_port; |
| 828 | u8 mcast_af; |
| 829 | u8 mcast_ttl; |
Julian Anastasov | e4ff675 | 2015-07-26 15:03:27 +0300 | [diff] [blame] | 830 | /* multicast interface name */ |
| 831 | char mcast_ifn[IP_VS_IFNAME_MAXLEN]; |
| 832 | }; |
| 833 | |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 834 | /* IPVS in network namespace */ |
| 835 | struct netns_ipvs { |
| 836 | int gen; /* Generation */ |
Hans Schillstrom | 7a4f076 | 2011-05-03 22:09:31 +0200 | [diff] [blame] | 837 | int enable; /* enable like nf_hooks do */ |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 838 | /* Hash table: for real service lookups */ |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 839 | #define IP_VS_RTAB_BITS 4 |
| 840 | #define IP_VS_RTAB_SIZE (1 << IP_VS_RTAB_BITS) |
| 841 | #define IP_VS_RTAB_MASK (IP_VS_RTAB_SIZE - 1) |
| 842 | |
Julian Anastasov | 276472e | 2013-03-21 11:58:08 +0200 | [diff] [blame] | 843 | struct hlist_head rs_table[IP_VS_RTAB_SIZE]; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 844 | /* ip_vs_app */ |
| 845 | struct list_head app_list; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 846 | /* ip_vs_proto */ |
| 847 | #define IP_VS_PROTO_TAB_SIZE 32 /* must be power of 2 */ |
| 848 | struct ip_vs_proto_data *proto_data_table[IP_VS_PROTO_TAB_SIZE]; |
| 849 | /* ip_vs_proto_tcp */ |
| 850 | #ifdef CONFIG_IP_VS_PROTO_TCP |
| 851 | #define TCP_APP_TAB_BITS 4 |
| 852 | #define TCP_APP_TAB_SIZE (1 << TCP_APP_TAB_BITS) |
| 853 | #define TCP_APP_TAB_MASK (TCP_APP_TAB_SIZE - 1) |
| 854 | struct list_head tcp_apps[TCP_APP_TAB_SIZE]; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 855 | #endif |
| 856 | /* ip_vs_proto_udp */ |
| 857 | #ifdef CONFIG_IP_VS_PROTO_UDP |
| 858 | #define UDP_APP_TAB_BITS 4 |
| 859 | #define UDP_APP_TAB_SIZE (1 << UDP_APP_TAB_BITS) |
| 860 | #define UDP_APP_TAB_MASK (UDP_APP_TAB_SIZE - 1) |
| 861 | struct list_head udp_apps[UDP_APP_TAB_SIZE]; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 862 | #endif |
| 863 | /* ip_vs_proto_sctp */ |
| 864 | #ifdef CONFIG_IP_VS_PROTO_SCTP |
| 865 | #define SCTP_APP_TAB_BITS 4 |
| 866 | #define SCTP_APP_TAB_SIZE (1 << SCTP_APP_TAB_BITS) |
| 867 | #define SCTP_APP_TAB_MASK (SCTP_APP_TAB_SIZE - 1) |
| 868 | /* Hash table for SCTP application incarnations */ |
| 869 | struct list_head sctp_apps[SCTP_APP_TAB_SIZE]; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 870 | #endif |
| 871 | /* ip_vs_conn */ |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 872 | atomic_t conn_count; /* connection counter */ |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 873 | |
| 874 | /* ip_vs_ctl */ |
Julian Anastasov | 2a0751a | 2011-03-04 12:20:35 +0200 | [diff] [blame] | 875 | struct ip_vs_stats tot_stats; /* Statistics & est. */ |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 876 | |
| 877 | int num_services; /* no of virtual services */ |
Simon Horman | f2247fb | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 878 | |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 879 | /* Trash for destinations */ |
| 880 | struct list_head dest_trash; |
Julian Anastasov | 578bc3e | 2013-03-22 11:46:49 +0200 | [diff] [blame] | 881 | spinlock_t dest_trash_lock; |
| 882 | struct timer_list dest_trash_timer; /* expiration timer */ |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 883 | /* Service counters */ |
| 884 | atomic_t ftpsvc_counter; |
| 885 | atomic_t nullsvc_counter; |
Marco Angaroni | 39b9722 | 2016-04-05 18:26:29 +0200 | [diff] [blame] | 886 | atomic_t conn_out_counter; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 887 | |
Simon Horman | f2247fb | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 888 | #ifdef CONFIG_SYSCTL |
| 889 | /* 1/rate drop and drop-entry variables */ |
| 890 | struct delayed_work defense_work; /* Work handler */ |
| 891 | int drop_rate; |
| 892 | int drop_counter; |
| 893 | atomic_t dropentry; |
| 894 | /* locks in ctl.c */ |
| 895 | spinlock_t dropentry_lock; /* drop entry handling */ |
| 896 | spinlock_t droppacket_lock; /* drop packet handling */ |
| 897 | spinlock_t securetcp_lock; /* state and timeout tables */ |
| 898 | |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 899 | /* sys-ctl struct */ |
| 900 | struct ctl_table_header *sysctl_hdr; |
| 901 | struct ctl_table *sysctl_tbl; |
Simon Horman | f2247fb | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 902 | #endif |
| 903 | |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 904 | /* sysctl variables */ |
| 905 | int sysctl_amemthresh; |
| 906 | int sysctl_am_droprate; |
| 907 | int sysctl_drop_entry; |
| 908 | int sysctl_drop_packet; |
| 909 | int sysctl_secure_tcp; |
| 910 | #ifdef CONFIG_IP_VS_NFCT |
| 911 | int sysctl_conntrack; |
| 912 | #endif |
| 913 | int sysctl_snat_reroute; |
| 914 | int sysctl_sync_ver; |
Pablo Neira Ayuso | f73181c | 2012-05-08 19:40:30 +0200 | [diff] [blame] | 915 | int sysctl_sync_ports; |
Julian Anastasov | 4d0c875 | 2013-06-24 22:44:41 +0300 | [diff] [blame] | 916 | int sysctl_sync_persist_mode; |
Zhang Yanfei | 0799567 | 2013-04-29 11:55:10 -0700 | [diff] [blame] | 917 | unsigned long sysctl_sync_qlen_max; |
Pablo Neira Ayuso | 1c003b1 | 2012-05-08 19:39:49 +0200 | [diff] [blame] | 918 | int sysctl_sync_sock_size; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 919 | int sysctl_cache_bypass; |
| 920 | int sysctl_expire_nodest_conn; |
Alexander Frolkin | c6c96c1 | 2013-06-13 08:56:15 +0100 | [diff] [blame] | 921 | int sysctl_sloppy_tcp; |
| 922 | int sysctl_sloppy_sctp; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 923 | int sysctl_expire_quiescent_template; |
| 924 | int sysctl_sync_threshold[2]; |
Julian Anastasov | 749c42b | 2012-04-24 23:46:40 +0300 | [diff] [blame] | 925 | unsigned int sysctl_sync_refresh_period; |
| 926 | int sysctl_sync_retries; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 927 | int sysctl_nat_icmp_send; |
Julian Anastasov | 3654e61 | 2012-07-20 11:59:53 +0300 | [diff] [blame] | 928 | int sysctl_pmtu_disc; |
Julian Anastasov | 0c12582 | 2013-03-09 23:25:04 +0200 | [diff] [blame] | 929 | int sysctl_backup_only; |
Marcelo Ricardo Leitner | d752c36 | 2015-02-23 15:02:34 -0300 | [diff] [blame] | 930 | int sysctl_conn_reuse_mode; |
Alex Gartrell | 94485fe | 2015-08-26 09:40:34 -0700 | [diff] [blame] | 931 | int sysctl_schedule_icmp; |
Alex Gartrell | 4e47809 | 2015-09-14 23:23:05 -0700 | [diff] [blame] | 932 | int sysctl_ignore_tunneled; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 933 | |
| 934 | /* ip_vs_lblc */ |
| 935 | int sysctl_lblc_expiration; |
| 936 | struct ctl_table_header *lblc_ctl_header; |
| 937 | struct ctl_table *lblc_ctl_table; |
| 938 | /* ip_vs_lblcr */ |
| 939 | int sysctl_lblcr_expiration; |
| 940 | struct ctl_table_header *lblcr_ctl_header; |
| 941 | struct ctl_table *lblcr_ctl_table; |
| 942 | /* ip_vs_est */ |
| 943 | struct list_head est_list; /* estimator list */ |
| 944 | spinlock_t est_lock; |
| 945 | struct timer_list est_timer; /* Estimation timer */ |
| 946 | /* ip_vs_sync */ |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 947 | spinlock_t sync_lock; |
Pablo Neira Ayuso | f73181c | 2012-05-08 19:40:30 +0200 | [diff] [blame] | 948 | struct ipvs_master_sync_state *ms; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 949 | spinlock_t sync_buff_lock; |
Pablo Neira Ayuso | f73181c | 2012-05-08 19:40:30 +0200 | [diff] [blame] | 950 | struct task_struct **backup_threads; |
| 951 | int threads_mask; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 952 | volatile int sync_state; |
Hans Schillstrom | ae1d48b | 2011-10-11 10:54:35 +0900 | [diff] [blame] | 953 | struct mutex sync_mutex; |
Julian Anastasov | e4ff675 | 2015-07-26 15:03:27 +0300 | [diff] [blame] | 954 | struct ipvs_sync_daemon_cfg mcfg; /* Master Configuration */ |
| 955 | struct ipvs_sync_daemon_cfg bcfg; /* Backup Configuration */ |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 956 | /* net name space ptr */ |
| 957 | struct net *net; /* Needed by timer routines */ |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 958 | /* Number of heterogeneous destinations, needed becaus heterogeneous |
| 959 | * are not supported when synchronization is enabled. |
| 960 | */ |
Alex Gartrell | 391f503d | 2014-09-09 16:40:24 -0700 | [diff] [blame] | 961 | unsigned int mixed_address_family_dests; |
Julian Anastasov | 2553d06 | 2011-03-04 12:18:07 +0200 | [diff] [blame] | 962 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | |
Simon Horman | 59e0350 | 2011-02-04 18:33:01 +0900 | [diff] [blame] | 964 | #define DEFAULT_SYNC_THRESHOLD 3 |
| 965 | #define DEFAULT_SYNC_PERIOD 50 |
Simon Horman | 7532e8d | 2011-02-04 18:33:01 +0900 | [diff] [blame] | 966 | #define DEFAULT_SYNC_VER 1 |
Alexander Frolkin | c6c96c1 | 2013-06-13 08:56:15 +0100 | [diff] [blame] | 967 | #define DEFAULT_SLOPPY_TCP 0 |
| 968 | #define DEFAULT_SLOPPY_SCTP 0 |
Julian Anastasov | 749c42b | 2012-04-24 23:46:40 +0300 | [diff] [blame] | 969 | #define DEFAULT_SYNC_REFRESH_PERIOD (0U * HZ) |
| 970 | #define DEFAULT_SYNC_RETRIES 0 |
Pablo Neira Ayuso | 1c003b1 | 2012-05-08 19:39:49 +0200 | [diff] [blame] | 971 | #define IPVS_SYNC_WAKEUP_RATE 8 |
| 972 | #define IPVS_SYNC_QLEN_MAX (IPVS_SYNC_WAKEUP_RATE * 4) |
| 973 | #define IPVS_SYNC_SEND_DELAY (HZ / 50) |
| 974 | #define IPVS_SYNC_CHECK_PERIOD HZ |
Julian Anastasov | 749c42b | 2012-04-24 23:46:40 +0300 | [diff] [blame] | 975 | #define IPVS_SYNC_FLUSH_TIME (HZ * 2) |
Pablo Neira Ayuso | f73181c | 2012-05-08 19:40:30 +0200 | [diff] [blame] | 976 | #define IPVS_SYNC_PORTS_MAX (1 << 6) |
Simon Horman | 59e0350 | 2011-02-04 18:33:01 +0900 | [diff] [blame] | 977 | |
| 978 | #ifdef CONFIG_SYSCTL |
| 979 | |
| 980 | static inline int sysctl_sync_threshold(struct netns_ipvs *ipvs) |
| 981 | { |
| 982 | return ipvs->sysctl_sync_threshold[0]; |
| 983 | } |
| 984 | |
| 985 | static inline int sysctl_sync_period(struct netns_ipvs *ipvs) |
| 986 | { |
Mark Rutland | 6aa7de0 | 2017-10-23 14:07:29 -0700 | [diff] [blame] | 987 | return READ_ONCE(ipvs->sysctl_sync_threshold[1]); |
Julian Anastasov | 749c42b | 2012-04-24 23:46:40 +0300 | [diff] [blame] | 988 | } |
| 989 | |
| 990 | static inline unsigned int sysctl_sync_refresh_period(struct netns_ipvs *ipvs) |
| 991 | { |
Mark Rutland | 6aa7de0 | 2017-10-23 14:07:29 -0700 | [diff] [blame] | 992 | return READ_ONCE(ipvs->sysctl_sync_refresh_period); |
Julian Anastasov | 749c42b | 2012-04-24 23:46:40 +0300 | [diff] [blame] | 993 | } |
| 994 | |
| 995 | static inline int sysctl_sync_retries(struct netns_ipvs *ipvs) |
| 996 | { |
| 997 | return ipvs->sysctl_sync_retries; |
Simon Horman | 59e0350 | 2011-02-04 18:33:01 +0900 | [diff] [blame] | 998 | } |
| 999 | |
Simon Horman | 7532e8d | 2011-02-04 18:33:01 +0900 | [diff] [blame] | 1000 | static inline int sysctl_sync_ver(struct netns_ipvs *ipvs) |
| 1001 | { |
| 1002 | return ipvs->sysctl_sync_ver; |
| 1003 | } |
| 1004 | |
Alexander Frolkin | c6c96c1 | 2013-06-13 08:56:15 +0100 | [diff] [blame] | 1005 | static inline int sysctl_sloppy_tcp(struct netns_ipvs *ipvs) |
| 1006 | { |
| 1007 | return ipvs->sysctl_sloppy_tcp; |
| 1008 | } |
| 1009 | |
| 1010 | static inline int sysctl_sloppy_sctp(struct netns_ipvs *ipvs) |
| 1011 | { |
| 1012 | return ipvs->sysctl_sloppy_sctp; |
| 1013 | } |
| 1014 | |
Pablo Neira Ayuso | f73181c | 2012-05-08 19:40:30 +0200 | [diff] [blame] | 1015 | static inline int sysctl_sync_ports(struct netns_ipvs *ipvs) |
| 1016 | { |
Mark Rutland | 6aa7de0 | 2017-10-23 14:07:29 -0700 | [diff] [blame] | 1017 | return READ_ONCE(ipvs->sysctl_sync_ports); |
Pablo Neira Ayuso | f73181c | 2012-05-08 19:40:30 +0200 | [diff] [blame] | 1018 | } |
| 1019 | |
Julian Anastasov | 4d0c875 | 2013-06-24 22:44:41 +0300 | [diff] [blame] | 1020 | static inline int sysctl_sync_persist_mode(struct netns_ipvs *ipvs) |
| 1021 | { |
| 1022 | return ipvs->sysctl_sync_persist_mode; |
| 1023 | } |
| 1024 | |
Zhang Yanfei | 0799567 | 2013-04-29 11:55:10 -0700 | [diff] [blame] | 1025 | 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] | 1026 | { |
| 1027 | return ipvs->sysctl_sync_qlen_max; |
| 1028 | } |
| 1029 | |
| 1030 | static inline int sysctl_sync_sock_size(struct netns_ipvs *ipvs) |
| 1031 | { |
| 1032 | return ipvs->sysctl_sync_sock_size; |
| 1033 | } |
| 1034 | |
Julian Anastasov | 3654e61 | 2012-07-20 11:59:53 +0300 | [diff] [blame] | 1035 | static inline int sysctl_pmtu_disc(struct netns_ipvs *ipvs) |
| 1036 | { |
| 1037 | return ipvs->sysctl_pmtu_disc; |
| 1038 | } |
| 1039 | |
Julian Anastasov | 0c12582 | 2013-03-09 23:25:04 +0200 | [diff] [blame] | 1040 | static inline int sysctl_backup_only(struct netns_ipvs *ipvs) |
| 1041 | { |
| 1042 | return ipvs->sync_state & IP_VS_STATE_BACKUP && |
| 1043 | ipvs->sysctl_backup_only; |
| 1044 | } |
| 1045 | |
Marcelo Ricardo Leitner | d752c36 | 2015-02-23 15:02:34 -0300 | [diff] [blame] | 1046 | static inline int sysctl_conn_reuse_mode(struct netns_ipvs *ipvs) |
| 1047 | { |
| 1048 | return ipvs->sysctl_conn_reuse_mode; |
| 1049 | } |
| 1050 | |
Alex Gartrell | 94485fe | 2015-08-26 09:40:34 -0700 | [diff] [blame] | 1051 | static inline int sysctl_schedule_icmp(struct netns_ipvs *ipvs) |
| 1052 | { |
| 1053 | return ipvs->sysctl_schedule_icmp; |
| 1054 | } |
| 1055 | |
Alex Gartrell | 4e47809 | 2015-09-14 23:23:05 -0700 | [diff] [blame] | 1056 | static inline int sysctl_ignore_tunneled(struct netns_ipvs *ipvs) |
| 1057 | { |
| 1058 | return ipvs->sysctl_ignore_tunneled; |
| 1059 | } |
| 1060 | |
Eric W. Biederman | 5703294 | 2015-09-21 13:02:49 -0500 | [diff] [blame] | 1061 | static inline int sysctl_cache_bypass(struct netns_ipvs *ipvs) |
| 1062 | { |
| 1063 | return ipvs->sysctl_cache_bypass; |
| 1064 | } |
| 1065 | |
Simon Horman | 59e0350 | 2011-02-04 18:33:01 +0900 | [diff] [blame] | 1066 | #else |
| 1067 | |
| 1068 | static inline int sysctl_sync_threshold(struct netns_ipvs *ipvs) |
| 1069 | { |
| 1070 | return DEFAULT_SYNC_THRESHOLD; |
| 1071 | } |
| 1072 | |
| 1073 | static inline int sysctl_sync_period(struct netns_ipvs *ipvs) |
| 1074 | { |
| 1075 | return DEFAULT_SYNC_PERIOD; |
| 1076 | } |
| 1077 | |
Julian Anastasov | 749c42b | 2012-04-24 23:46:40 +0300 | [diff] [blame] | 1078 | static inline unsigned int sysctl_sync_refresh_period(struct netns_ipvs *ipvs) |
| 1079 | { |
| 1080 | return DEFAULT_SYNC_REFRESH_PERIOD; |
| 1081 | } |
| 1082 | |
| 1083 | static inline int sysctl_sync_retries(struct netns_ipvs *ipvs) |
| 1084 | { |
| 1085 | return DEFAULT_SYNC_RETRIES & 3; |
| 1086 | } |
| 1087 | |
Simon Horman | 7532e8d | 2011-02-04 18:33:01 +0900 | [diff] [blame] | 1088 | static inline int sysctl_sync_ver(struct netns_ipvs *ipvs) |
| 1089 | { |
| 1090 | return DEFAULT_SYNC_VER; |
| 1091 | } |
| 1092 | |
Alexander Frolkin | c6c96c1 | 2013-06-13 08:56:15 +0100 | [diff] [blame] | 1093 | static inline int sysctl_sloppy_tcp(struct netns_ipvs *ipvs) |
| 1094 | { |
| 1095 | return DEFAULT_SLOPPY_TCP; |
| 1096 | } |
| 1097 | |
| 1098 | static inline int sysctl_sloppy_sctp(struct netns_ipvs *ipvs) |
| 1099 | { |
| 1100 | return DEFAULT_SLOPPY_SCTP; |
| 1101 | } |
| 1102 | |
Pablo Neira Ayuso | f73181c | 2012-05-08 19:40:30 +0200 | [diff] [blame] | 1103 | static inline int sysctl_sync_ports(struct netns_ipvs *ipvs) |
| 1104 | { |
| 1105 | return 1; |
| 1106 | } |
| 1107 | |
Julian Anastasov | 4d0c875 | 2013-06-24 22:44:41 +0300 | [diff] [blame] | 1108 | static inline int sysctl_sync_persist_mode(struct netns_ipvs *ipvs) |
| 1109 | { |
| 1110 | return 0; |
| 1111 | } |
| 1112 | |
Zhang Yanfei | 0799567 | 2013-04-29 11:55:10 -0700 | [diff] [blame] | 1113 | 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] | 1114 | { |
| 1115 | return IPVS_SYNC_QLEN_MAX; |
| 1116 | } |
| 1117 | |
| 1118 | static inline int sysctl_sync_sock_size(struct netns_ipvs *ipvs) |
| 1119 | { |
| 1120 | return 0; |
| 1121 | } |
| 1122 | |
Julian Anastasov | 3654e61 | 2012-07-20 11:59:53 +0300 | [diff] [blame] | 1123 | static inline int sysctl_pmtu_disc(struct netns_ipvs *ipvs) |
| 1124 | { |
| 1125 | return 1; |
| 1126 | } |
| 1127 | |
Julian Anastasov | 0c12582 | 2013-03-09 23:25:04 +0200 | [diff] [blame] | 1128 | static inline int sysctl_backup_only(struct netns_ipvs *ipvs) |
| 1129 | { |
| 1130 | return 0; |
| 1131 | } |
| 1132 | |
Marcelo Ricardo Leitner | d752c36 | 2015-02-23 15:02:34 -0300 | [diff] [blame] | 1133 | static inline int sysctl_conn_reuse_mode(struct netns_ipvs *ipvs) |
| 1134 | { |
| 1135 | return 1; |
| 1136 | } |
| 1137 | |
Alex Gartrell | 94485fe | 2015-08-26 09:40:34 -0700 | [diff] [blame] | 1138 | static inline int sysctl_schedule_icmp(struct netns_ipvs *ipvs) |
| 1139 | { |
| 1140 | return 0; |
| 1141 | } |
| 1142 | |
Alex Gartrell | 4e47809 | 2015-09-14 23:23:05 -0700 | [diff] [blame] | 1143 | static inline int sysctl_ignore_tunneled(struct netns_ipvs *ipvs) |
| 1144 | { |
| 1145 | return 0; |
| 1146 | } |
| 1147 | |
Eric W. Biederman | 5703294 | 2015-09-21 13:02:49 -0500 | [diff] [blame] | 1148 | static inline int sysctl_cache_bypass(struct netns_ipvs *ipvs) |
| 1149 | { |
| 1150 | return 0; |
| 1151 | } |
| 1152 | |
Simon Horman | 59e0350 | 2011-02-04 18:33:01 +0900 | [diff] [blame] | 1153 | #endif |
| 1154 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1155 | /* IPVS core functions |
| 1156 | * (from ip_vs_core.c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | */ |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1158 | const char *ip_vs_proto_name(unsigned int proto); |
| 1159 | void ip_vs_init_hash_table(struct list_head *table, int rows); |
Marco Angaroni | 39b9722 | 2016-04-05 18:26:29 +0200 | [diff] [blame] | 1160 | struct ip_vs_conn *ip_vs_new_conn_out(struct ip_vs_service *svc, |
| 1161 | struct ip_vs_dest *dest, |
| 1162 | struct sk_buff *skb, |
| 1163 | const struct ip_vs_iphdr *iph, |
| 1164 | __be16 dport, |
| 1165 | __be16 cport); |
Sven Wegener | afdd614 | 2008-08-10 09:18:01 +0000 | [diff] [blame] | 1166 | #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] | 1167 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | #define IP_VS_APP_TYPE_FTP 1 |
| 1169 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1170 | /* ip_vs_conn handling functions |
| 1171 | * (from ip_vs_conn.c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1172 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | enum { |
| 1174 | IP_VS_DIR_INPUT = 0, |
| 1175 | IP_VS_DIR_OUTPUT, |
| 1176 | IP_VS_DIR_INPUT_ONLY, |
| 1177 | IP_VS_DIR_LAST, |
| 1178 | }; |
| 1179 | |
Eric W. Biederman | 19913de | 2015-09-21 13:01:43 -0500 | [diff] [blame] | 1180 | 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] | 1181 | const union nf_inet_addr *caddr, |
| 1182 | __be16 cport, |
| 1183 | const union nf_inet_addr *vaddr, |
| 1184 | __be16 vport, |
| 1185 | struct ip_vs_conn_param *p) |
| 1186 | { |
Eric W. Biederman | 19913de | 2015-09-21 13:01:43 -0500 | [diff] [blame] | 1187 | p->ipvs = ipvs; |
Simon Horman | f11017e | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 1188 | p->af = af; |
| 1189 | p->protocol = protocol; |
| 1190 | p->caddr = caddr; |
| 1191 | p->cport = cport; |
| 1192 | p->vaddr = vaddr; |
| 1193 | p->vport = vport; |
Simon Horman | 8599928 | 2010-08-22 21:37:53 +0900 | [diff] [blame] | 1194 | p->pe = NULL; |
| 1195 | p->pe_data = NULL; |
Simon Horman | f11017e | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 1196 | } |
Julius Volz | 28364a5 | 2008-09-02 15:55:43 +0200 | [diff] [blame] | 1197 | |
Simon Horman | f11017e | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 1198 | struct ip_vs_conn *ip_vs_conn_in_get(const struct ip_vs_conn_param *p); |
| 1199 | 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] | 1200 | |
Eric W. Biederman | ab16197 | 2015-09-21 13:02:38 -0500 | [diff] [blame] | 1201 | struct ip_vs_conn * ip_vs_conn_in_get_proto(struct netns_ipvs *ipvs, int af, |
| 1202 | const struct sk_buff *skb, |
Alex Gartrell | 802c41a | 2015-08-26 09:40:32 -0700 | [diff] [blame] | 1203 | const struct ip_vs_iphdr *iph); |
Simon Horman | 5c0d237 | 2010-08-02 17:12:44 +0200 | [diff] [blame] | 1204 | |
Simon Horman | f11017e | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 1205 | 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] | 1206 | |
Eric W. Biederman | 0cf705c8c | 2015-09-21 13:02:39 -0500 | [diff] [blame] | 1207 | struct ip_vs_conn * ip_vs_conn_out_get_proto(struct netns_ipvs *ipvs, int af, |
| 1208 | const struct sk_buff *skb, |
Alex Gartrell | 802c41a | 2015-08-26 09:40:32 -0700 | [diff] [blame] | 1209 | const struct ip_vs_iphdr *iph); |
Simon Horman | 5c0d237 | 2010-08-02 17:12:44 +0200 | [diff] [blame] | 1210 | |
Julian Anastasov | 088339a | 2013-03-21 11:58:10 +0200 | [diff] [blame] | 1211 | /* Get reference to gain full access to conn. |
| 1212 | * By default, RCU read-side critical sections have access only to |
| 1213 | * conn fields and its PE data, see ip_vs_conn_rcu_free() for reference. |
| 1214 | */ |
| 1215 | static inline bool __ip_vs_conn_get(struct ip_vs_conn *cp) |
| 1216 | { |
Reshetova, Elena | b54ab92 | 2017-03-16 10:03:34 +0200 | [diff] [blame] | 1217 | return refcount_inc_not_zero(&cp->refcnt); |
Julian Anastasov | 088339a | 2013-03-21 11:58:10 +0200 | [diff] [blame] | 1218 | } |
| 1219 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1220 | /* put back the conn without restarting its timer */ |
| 1221 | static inline void __ip_vs_conn_put(struct ip_vs_conn *cp) |
| 1222 | { |
Peter Zijlstra | 4e857c5 | 2014-03-17 18:06:10 +0100 | [diff] [blame] | 1223 | smp_mb__before_atomic(); |
Reshetova, Elena | b54ab92 | 2017-03-16 10:03:34 +0200 | [diff] [blame] | 1224 | refcount_dec(&cp->refcnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1225 | } |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1226 | void ip_vs_conn_put(struct ip_vs_conn *cp); |
| 1227 | 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] | 1228 | |
Alex Gartrell | ba38528 | 2014-09-09 16:40:23 -0700 | [diff] [blame] | 1229 | 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] | 1230 | const union nf_inet_addr *daddr, |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 1231 | __be16 dport, unsigned int flags, |
Hans Schillstrom | 0e051e6 | 2010-11-19 14:25:07 +0100 | [diff] [blame] | 1232 | struct ip_vs_dest *dest, __u32 fwmark); |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1233 | void ip_vs_conn_expire_now(struct ip_vs_conn *cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1234 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1235 | const char *ip_vs_state_name(__u16 proto, int state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | |
Eric W. Biederman | 69f3909 | 2015-09-21 13:02:57 -0500 | [diff] [blame] | 1237 | void ip_vs_tcp_conn_listen(struct ip_vs_conn *cp); |
Marco Angaroni | 3ec10d3 | 2016-05-16 19:18:09 +0200 | [diff] [blame] | 1238 | int ip_vs_check_template(struct ip_vs_conn *ct, struct ip_vs_dest *cdest); |
Eric W. Biederman | 423b559 | 2015-09-21 13:02:24 -0500 | [diff] [blame] | 1239 | void ip_vs_random_dropentry(struct netns_ipvs *ipvs); |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1240 | int ip_vs_conn_init(void); |
| 1241 | void ip_vs_conn_cleanup(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1242 | |
| 1243 | static inline void ip_vs_control_del(struct ip_vs_conn *cp) |
| 1244 | { |
| 1245 | struct ip_vs_conn *ctl_cp = cp->control; |
| 1246 | if (!ctl_cp) { |
Julius Volz | cfc78c5 | 2008-09-02 15:55:53 +0200 | [diff] [blame] | 1247 | IP_VS_ERR_BUF("request control DEL for uncontrolled: " |
| 1248 | "%s:%d to %s:%d\n", |
| 1249 | IP_VS_DBG_ADDR(cp->af, &cp->caddr), |
| 1250 | ntohs(cp->cport), |
| 1251 | IP_VS_DBG_ADDR(cp->af, &cp->vaddr), |
| 1252 | ntohs(cp->vport)); |
| 1253 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1254 | return; |
| 1255 | } |
| 1256 | |
Julius Volz | cfc78c5 | 2008-09-02 15:55:53 +0200 | [diff] [blame] | 1257 | IP_VS_DBG_BUF(7, "DELeting control for: " |
| 1258 | "cp.dst=%s:%d ctl_cp.dst=%s:%d\n", |
| 1259 | IP_VS_DBG_ADDR(cp->af, &cp->caddr), |
| 1260 | ntohs(cp->cport), |
| 1261 | IP_VS_DBG_ADDR(cp->af, &ctl_cp->caddr), |
| 1262 | ntohs(ctl_cp->cport)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1263 | |
| 1264 | cp->control = NULL; |
| 1265 | if (atomic_read(&ctl_cp->n_control) == 0) { |
Julius Volz | cfc78c5 | 2008-09-02 15:55:53 +0200 | [diff] [blame] | 1266 | IP_VS_ERR_BUF("BUG control DEL with n=0 : " |
| 1267 | "%s:%d to %s:%d\n", |
| 1268 | IP_VS_DBG_ADDR(cp->af, &cp->caddr), |
| 1269 | ntohs(cp->cport), |
| 1270 | IP_VS_DBG_ADDR(cp->af, &cp->vaddr), |
| 1271 | ntohs(cp->vport)); |
| 1272 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1273 | return; |
| 1274 | } |
| 1275 | atomic_dec(&ctl_cp->n_control); |
| 1276 | } |
| 1277 | |
| 1278 | static inline void |
| 1279 | ip_vs_control_add(struct ip_vs_conn *cp, struct ip_vs_conn *ctl_cp) |
| 1280 | { |
| 1281 | if (cp->control) { |
Julius Volz | cfc78c5 | 2008-09-02 15:55:53 +0200 | [diff] [blame] | 1282 | IP_VS_ERR_BUF("request control ADD for already controlled: " |
| 1283 | "%s:%d to %s:%d\n", |
| 1284 | IP_VS_DBG_ADDR(cp->af, &cp->caddr), |
| 1285 | ntohs(cp->cport), |
| 1286 | IP_VS_DBG_ADDR(cp->af, &cp->vaddr), |
| 1287 | ntohs(cp->vport)); |
| 1288 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1289 | ip_vs_control_del(cp); |
| 1290 | } |
| 1291 | |
Julius Volz | cfc78c5 | 2008-09-02 15:55:53 +0200 | [diff] [blame] | 1292 | IP_VS_DBG_BUF(7, "ADDing control for: " |
| 1293 | "cp.dst=%s:%d ctl_cp.dst=%s:%d\n", |
| 1294 | IP_VS_DBG_ADDR(cp->af, &cp->caddr), |
| 1295 | ntohs(cp->cport), |
| 1296 | IP_VS_DBG_ADDR(cp->af, &ctl_cp->caddr), |
| 1297 | ntohs(ctl_cp->cport)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | |
| 1299 | cp->control = ctl_cp; |
| 1300 | atomic_inc(&ctl_cp->n_control); |
| 1301 | } |
| 1302 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1303 | /* IPVS netns init & cleanup functions */ |
Eric W. Biederman | a4dd036 | 2015-09-21 13:02:28 -0500 | [diff] [blame] | 1304 | int ip_vs_estimator_net_init(struct netns_ipvs *ipvs); |
Eric W. Biederman | 3d99376 | 2015-09-21 13:02:26 -0500 | [diff] [blame] | 1305 | int ip_vs_control_net_init(struct netns_ipvs *ipvs); |
Eric W. Biederman | 7d1f88e | 2015-09-21 13:02:58 -0500 | [diff] [blame] | 1306 | int ip_vs_protocol_net_init(struct netns_ipvs *ipvs); |
Eric W. Biederman | b5dd212 | 2015-09-21 13:02:34 -0500 | [diff] [blame] | 1307 | int ip_vs_app_net_init(struct netns_ipvs *ipvs); |
Eric W. Biederman | 2f3edc6a | 2015-09-21 13:02:42 -0500 | [diff] [blame] | 1308 | int ip_vs_conn_net_init(struct netns_ipvs *ipvs); |
Eric W. Biederman | 802cb43 | 2015-09-21 13:02:20 -0500 | [diff] [blame] | 1309 | int ip_vs_sync_net_init(struct netns_ipvs *ipvs); |
Eric W. Biederman | 2f3edc6a | 2015-09-21 13:02:42 -0500 | [diff] [blame] | 1310 | void ip_vs_conn_net_cleanup(struct netns_ipvs *ipvs); |
Eric W. Biederman | b5dd212 | 2015-09-21 13:02:34 -0500 | [diff] [blame] | 1311 | void ip_vs_app_net_cleanup(struct netns_ipvs *ipvs); |
Eric W. Biederman | 7d1f88e | 2015-09-21 13:02:58 -0500 | [diff] [blame] | 1312 | void ip_vs_protocol_net_cleanup(struct netns_ipvs *ipvs); |
Eric W. Biederman | 3d99376 | 2015-09-21 13:02:26 -0500 | [diff] [blame] | 1313 | void ip_vs_control_net_cleanup(struct netns_ipvs *ipvs); |
Eric W. Biederman | a4dd036 | 2015-09-21 13:02:28 -0500 | [diff] [blame] | 1314 | void ip_vs_estimator_net_cleanup(struct netns_ipvs *ipvs); |
Eric W. Biederman | ebea1f7 | 2015-09-21 13:02:21 -0500 | [diff] [blame] | 1315 | void ip_vs_sync_net_cleanup(struct netns_ipvs *ipvs); |
Eric W. Biederman | 56d2169 | 2015-09-21 13:01:58 -0500 | [diff] [blame] | 1316 | void ip_vs_service_net_cleanup(struct netns_ipvs *ipvs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1317 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1318 | /* IPVS application functions |
| 1319 | * (from ip_vs_app.c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | */ |
| 1321 | #define IP_VS_APP_MAX_PORTS 8 |
Eric W. Biederman | 9f8128a | 2015-09-21 13:02:32 -0500 | [diff] [blame] | 1322 | struct ip_vs_app *register_ip_vs_app(struct netns_ipvs *ipvs, struct ip_vs_app *app); |
| 1323 | 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] | 1324 | int ip_vs_bind_app(struct ip_vs_conn *cp, struct ip_vs_protocol *pp); |
| 1325 | void ip_vs_unbind_app(struct ip_vs_conn *cp); |
Eric W. Biederman | 3250dc9 | 2015-09-21 13:02:31 -0500 | [diff] [blame] | 1326 | 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] | 1327 | __u16 port); |
| 1328 | int ip_vs_app_inc_get(struct ip_vs_app *inc); |
| 1329 | void ip_vs_app_inc_put(struct ip_vs_app *inc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1330 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1331 | int ip_vs_app_pkt_out(struct ip_vs_conn *, struct sk_buff *skb); |
| 1332 | 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] | 1333 | |
Simon Horman | 8be67a6 | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 1334 | int register_ip_vs_pe(struct ip_vs_pe *pe); |
| 1335 | int unregister_ip_vs_pe(struct ip_vs_pe *pe); |
Simon Horman | e9e5eee | 2010-11-08 20:05:57 +0900 | [diff] [blame] | 1336 | struct ip_vs_pe *ip_vs_pe_getbyname(const char *name); |
Hans Schillstrom | fe5e7a1 | 2010-11-19 14:25:12 +0100 | [diff] [blame] | 1337 | struct ip_vs_pe *__ip_vs_pe_getbyname(const char *pe_name); |
Simon Horman | e9e5eee | 2010-11-08 20:05:57 +0900 | [diff] [blame] | 1338 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1339 | /* 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] | 1340 | #define ip_vs_pe_get(pe) \ |
| 1341 | if (pe && pe->module) \ |
Simon Horman | e9e5eee | 2010-11-08 20:05:57 +0900 | [diff] [blame] | 1342 | __module_get(pe->module); |
Simon Horman | e9e5eee | 2010-11-08 20:05:57 +0900 | [diff] [blame] | 1343 | |
Paul Gortmaker | 69e7dae | 2011-08-29 12:40:15 -0400 | [diff] [blame] | 1344 | #define ip_vs_pe_put(pe) \ |
| 1345 | if (pe && pe->module) \ |
Simon Horman | e9e5eee | 2010-11-08 20:05:57 +0900 | [diff] [blame] | 1346 | module_put(pe->module); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1347 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1348 | /* IPVS protocol functions (from ip_vs_proto.c) */ |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1349 | int ip_vs_protocol_init(void); |
| 1350 | void ip_vs_protocol_cleanup(void); |
| 1351 | void ip_vs_protocol_timeout_change(struct netns_ipvs *ipvs, int flags); |
| 1352 | int *ip_vs_create_timeout_table(int *table, int size); |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1353 | void ip_vs_tcpudp_debug_packet(int af, struct ip_vs_protocol *pp, |
| 1354 | const struct sk_buff *skb, int offset, |
| 1355 | const char *msg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | |
| 1357 | extern struct ip_vs_protocol ip_vs_protocol_tcp; |
| 1358 | extern struct ip_vs_protocol ip_vs_protocol_udp; |
| 1359 | extern struct ip_vs_protocol ip_vs_protocol_icmp; |
| 1360 | extern struct ip_vs_protocol ip_vs_protocol_esp; |
| 1361 | extern struct ip_vs_protocol ip_vs_protocol_ah; |
Venkata Mohan Reddy | 2906f66 | 2010-02-18 12:31:05 +0100 | [diff] [blame] | 1362 | extern struct ip_vs_protocol ip_vs_protocol_sctp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1364 | /* Registering/unregistering scheduler functions |
| 1365 | * (from ip_vs_sched.c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1366 | */ |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1367 | int register_ip_vs_scheduler(struct ip_vs_scheduler *scheduler); |
| 1368 | int unregister_ip_vs_scheduler(struct ip_vs_scheduler *scheduler); |
| 1369 | int ip_vs_bind_scheduler(struct ip_vs_service *svc, |
| 1370 | struct ip_vs_scheduler *scheduler); |
| 1371 | void ip_vs_unbind_scheduler(struct ip_vs_service *svc, |
| 1372 | struct ip_vs_scheduler *sched); |
| 1373 | struct ip_vs_scheduler *ip_vs_scheduler_get(const char *sched_name); |
| 1374 | void ip_vs_scheduler_put(struct ip_vs_scheduler *scheduler); |
| 1375 | struct ip_vs_conn * |
Julian Anastasov | 190ecd2 | 2010-10-17 16:24:37 +0300 | [diff] [blame] | 1376 | 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] | 1377 | struct ip_vs_proto_data *pd, int *ignored, |
| 1378 | struct ip_vs_iphdr *iph); |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1379 | int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb, |
| 1380 | struct ip_vs_proto_data *pd, struct ip_vs_iphdr *iph); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1381 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1382 | 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] | 1383 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1384 | /* IPVS control data and functions (from ip_vs_ctl.c) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1385 | extern struct ip_vs_stats ip_vs_stats; |
Hans Schillstrom | b880c1f | 2010-11-19 14:25:14 +0100 | [diff] [blame] | 1386 | extern int sysctl_ip_vs_sync_ver; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1387 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1388 | struct ip_vs_service * |
Eric W. Biederman | 0a4fd6c | 2015-09-21 13:01:49 -0500 | [diff] [blame] | 1389 | 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] | 1390 | const union nf_inet_addr *vaddr, __be16 vport); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1391 | |
Eric W. Biederman | 48aed1b | 2015-09-21 13:01:50 -0500 | [diff] [blame] | 1392 | 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] | 1393 | const union nf_inet_addr *daddr, __be16 dport); |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 1394 | |
Marco Angaroni | 39b9722 | 2016-04-05 18:26:29 +0200 | [diff] [blame] | 1395 | struct ip_vs_dest * |
| 1396 | ip_vs_find_real_service(struct netns_ipvs *ipvs, int af, __u16 protocol, |
| 1397 | const union nf_inet_addr *daddr, __be16 dport); |
| 1398 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1399 | int ip_vs_use_count_inc(void); |
| 1400 | void ip_vs_use_count_dec(void); |
| 1401 | int ip_vs_register_nl_ioctl(void); |
| 1402 | void ip_vs_unregister_nl_ioctl(void); |
| 1403 | int ip_vs_control_init(void); |
| 1404 | void ip_vs_control_cleanup(void); |
| 1405 | struct ip_vs_dest * |
Eric W. Biederman | dc2add6 | 2015-09-21 13:01:51 -0500 | [diff] [blame] | 1406 | 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] | 1407 | const union nf_inet_addr *daddr, __be16 dport, |
| 1408 | const union nf_inet_addr *vaddr, __be16 vport, |
Julian Anastasov | 52793db | 2011-12-30 14:19:02 +0900 | [diff] [blame] | 1409 | __u16 protocol, __u32 fwmark, __u32 flags); |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1410 | void ip_vs_try_bind_dest(struct ip_vs_conn *cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | |
Julian Anastasov | fca9c20 | 2013-03-22 11:46:38 +0200 | [diff] [blame] | 1412 | static inline void ip_vs_dest_hold(struct ip_vs_dest *dest) |
| 1413 | { |
Reshetova, Elena | b54ab92 | 2017-03-16 10:03:34 +0200 | [diff] [blame] | 1414 | refcount_inc(&dest->refcnt); |
Julian Anastasov | fca9c20 | 2013-03-22 11:46:38 +0200 | [diff] [blame] | 1415 | } |
| 1416 | |
| 1417 | static inline void ip_vs_dest_put(struct ip_vs_dest *dest) |
| 1418 | { |
Peter Zijlstra | 4e857c5 | 2014-03-17 18:06:10 +0100 | [diff] [blame] | 1419 | smp_mb__before_atomic(); |
Reshetova, Elena | b54ab92 | 2017-03-16 10:03:34 +0200 | [diff] [blame] | 1420 | refcount_dec(&dest->refcnt); |
Julian Anastasov | fca9c20 | 2013-03-22 11:46:38 +0200 | [diff] [blame] | 1421 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1422 | |
Julian Anastasov | 9e4e948 | 2013-10-09 09:24:27 +0300 | [diff] [blame] | 1423 | static inline void ip_vs_dest_put_and_free(struct ip_vs_dest *dest) |
| 1424 | { |
Reshetova, Elena | b54ab92 | 2017-03-16 10:03:34 +0200 | [diff] [blame] | 1425 | if (refcount_dec_and_test(&dest->refcnt)) |
Julian Anastasov | 9e4e948 | 2013-10-09 09:24:27 +0300 | [diff] [blame] | 1426 | kfree(dest); |
| 1427 | } |
| 1428 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1429 | /* IPVS sync daemon data and function prototypes |
| 1430 | * (from ip_vs_sync.c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1431 | */ |
Eric W. Biederman | 6ac121d | 2015-09-21 13:02:10 -0500 | [diff] [blame] | 1432 | 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] | 1433 | int state); |
Eric W. Biederman | b3cf3cb | 2015-09-21 13:02:11 -0500 | [diff] [blame] | 1434 | int stop_sync_thread(struct netns_ipvs *ipvs, int state); |
Eric W. Biederman | b61a8c1 | 2015-09-21 13:02:17 -0500 | [diff] [blame] | 1435 | 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] | 1436 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1437 | /* IPVS rate estimator prototypes (from ip_vs_est.c) */ |
Eric W. Biederman | 0f34d54 | 2015-09-21 13:02:23 -0500 | [diff] [blame] | 1438 | void ip_vs_start_estimator(struct netns_ipvs *ipvs, struct ip_vs_stats *stats); |
| 1439 | 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] | 1440 | void ip_vs_zero_estimator(struct ip_vs_stats *stats); |
Julian Anastasov | cd67cd5 | 2015-02-06 09:44:44 +0200 | [diff] [blame] | 1441 | 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] | 1442 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1443 | /* Various IPVS packet transmitters (from ip_vs_xmit.c) */ |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1444 | int ip_vs_null_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1445 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
| 1446 | int ip_vs_bypass_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1447 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
| 1448 | int ip_vs_nat_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1449 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
| 1450 | int ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1451 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
| 1452 | int ip_vs_dr_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1453 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
| 1454 | int ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1455 | struct ip_vs_protocol *pp, int offset, |
| 1456 | unsigned int hooknum, struct ip_vs_iphdr *iph); |
| 1457 | void ip_vs_dest_dst_rcu_free(struct rcu_head *head); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | |
Julius Volz | b3cdd2a | 2008-09-02 15:55:45 +0200 | [diff] [blame] | 1459 | #ifdef CONFIG_IP_VS_IPV6 |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1460 | int ip_vs_bypass_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1461 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
| 1462 | int ip_vs_nat_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1463 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
| 1464 | int ip_vs_tunnel_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1465 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
| 1466 | int ip_vs_dr_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1467 | struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph); |
| 1468 | int ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1469 | struct ip_vs_protocol *pp, int offset, |
| 1470 | unsigned int hooknum, struct ip_vs_iphdr *iph); |
Julius Volz | b3cdd2a | 2008-09-02 15:55:45 +0200 | [diff] [blame] | 1471 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1472 | |
Simon Horman | 3a1bbf1 | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 1473 | #ifdef CONFIG_SYSCTL |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1474 | /* This is a simple mechanism to ignore packets when |
| 1475 | * we are loaded. Just set ip_vs_drop_rate to 'n' and |
| 1476 | * we start to drop 1/rate of the packets |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1477 | */ |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1478 | static inline int ip_vs_todrop(struct netns_ipvs *ipvs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1479 | { |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1480 | if (!ipvs->drop_rate) |
| 1481 | return 0; |
| 1482 | if (--ipvs->drop_counter > 0) |
| 1483 | return 0; |
| 1484 | ipvs->drop_counter = ipvs->drop_rate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1485 | return 1; |
| 1486 | } |
Simon Horman | 3a1bbf1 | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 1487 | #else |
| 1488 | static inline int ip_vs_todrop(struct netns_ipvs *ipvs) { return 0; } |
| 1489 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1491 | /* ip_vs_fwd_tag returns the forwarding tag of the connection */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1492 | #define IP_VS_FWD_METHOD(cp) (cp->flags & IP_VS_CONN_F_FWD_MASK) |
| 1493 | |
Adrian Bunk | 732db65 | 2005-09-01 17:40:26 -0700 | [diff] [blame] | 1494 | static inline char ip_vs_fwd_tag(struct ip_vs_conn *cp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1495 | { |
| 1496 | char fwd; |
| 1497 | |
| 1498 | switch (IP_VS_FWD_METHOD(cp)) { |
| 1499 | case IP_VS_CONN_F_MASQ: |
| 1500 | fwd = 'M'; break; |
| 1501 | case IP_VS_CONN_F_LOCALNODE: |
| 1502 | fwd = 'L'; break; |
| 1503 | case IP_VS_CONN_F_TUNNEL: |
| 1504 | fwd = 'T'; break; |
| 1505 | case IP_VS_CONN_F_DROUTE: |
| 1506 | fwd = 'R'; break; |
| 1507 | case IP_VS_CONN_F_BYPASS: |
| 1508 | fwd = 'B'; break; |
| 1509 | default: |
| 1510 | fwd = '?'; break; |
| 1511 | } |
| 1512 | return fwd; |
| 1513 | } |
| 1514 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1515 | void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp, |
| 1516 | struct ip_vs_conn *cp, int dir); |
Julius Volz | b3cdd2a | 2008-09-02 15:55:45 +0200 | [diff] [blame] | 1517 | |
| 1518 | #ifdef CONFIG_IP_VS_IPV6 |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1519 | void ip_vs_nat_icmp_v6(struct sk_buff *skb, struct ip_vs_protocol *pp, |
| 1520 | struct ip_vs_conn *cp, int dir); |
Julius Volz | b3cdd2a | 2008-09-02 15:55:45 +0200 | [diff] [blame] | 1521 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1522 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1523 | __sum16 ip_vs_checksum_complete(struct sk_buff *skb, int offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1524 | |
Al Viro | f9214b2 | 2006-11-16 02:41:18 -0800 | [diff] [blame] | 1525 | 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] | 1526 | { |
Al Viro | f9214b2 | 2006-11-16 02:41:18 -0800 | [diff] [blame] | 1527 | __be32 diff[2] = { ~old, new }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1528 | |
Joe Perches | 07f0757 | 2008-11-19 15:44:53 -0800 | [diff] [blame] | 1529 | return csum_partial(diff, sizeof(diff), oldsum); |
Al Viro | f9214b2 | 2006-11-16 02:41:18 -0800 | [diff] [blame] | 1530 | } |
| 1531 | |
Julius Volz | 0bbdd42 | 2008-09-02 15:55:42 +0200 | [diff] [blame] | 1532 | #ifdef CONFIG_IP_VS_IPV6 |
| 1533 | static inline __wsum ip_vs_check_diff16(const __be32 *old, const __be32 *new, |
| 1534 | __wsum oldsum) |
| 1535 | { |
| 1536 | __be32 diff[8] = { ~old[3], ~old[2], ~old[1], ~old[0], |
| 1537 | new[3], new[2], new[1], new[0] }; |
| 1538 | |
Joe Perches | 07f0757 | 2008-11-19 15:44:53 -0800 | [diff] [blame] | 1539 | return csum_partial(diff, sizeof(diff), oldsum); |
Julius Volz | 0bbdd42 | 2008-09-02 15:55:42 +0200 | [diff] [blame] | 1540 | } |
| 1541 | #endif |
| 1542 | |
Al Viro | f9214b2 | 2006-11-16 02:41:18 -0800 | [diff] [blame] | 1543 | static inline __wsum ip_vs_check_diff2(__be16 old, __be16 new, __wsum oldsum) |
| 1544 | { |
| 1545 | __be16 diff[2] = { ~old, new }; |
| 1546 | |
Joe Perches | 07f0757 | 2008-11-19 15:44:53 -0800 | [diff] [blame] | 1547 | return csum_partial(diff, sizeof(diff), oldsum); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1548 | } |
| 1549 | |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1550 | /* Forget current conntrack (unconfirmed) and attach notrack entry */ |
Julian Anastasov | cf356d6 | 2010-10-17 16:21:07 +0300 | [diff] [blame] | 1551 | static inline void ip_vs_notrack(struct sk_buff *skb) |
| 1552 | { |
| 1553 | #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) |
| 1554 | enum ip_conntrack_info ctinfo; |
Jesper Juhl | 06b6939 | 2011-03-09 22:55:05 +0100 | [diff] [blame] | 1555 | struct nf_conn *ct = nf_ct_get(skb, &ctinfo); |
Julian Anastasov | cf356d6 | 2010-10-17 16:21:07 +0300 | [diff] [blame] | 1556 | |
Florian Westphal | ab8bc7e | 2017-04-14 20:31:09 +0200 | [diff] [blame] | 1557 | if (ct) { |
Florian Westphal | 97a6ad1 | 2017-01-23 18:21:55 +0100 | [diff] [blame] | 1558 | nf_conntrack_put(&ct->ct_general); |
Florian Westphal | cc41c84 | 2017-04-14 20:31:08 +0200 | [diff] [blame] | 1559 | nf_ct_set(skb, NULL, IP_CT_UNTRACKED); |
Julian Anastasov | cf356d6 | 2010-10-17 16:21:07 +0300 | [diff] [blame] | 1560 | } |
| 1561 | #endif |
| 1562 | } |
| 1563 | |
Julian Anastasov | f4bc17c | 2010-09-21 17:35:41 +0200 | [diff] [blame] | 1564 | #ifdef CONFIG_IP_VS_NFCT |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1565 | /* Netfilter connection tracking |
| 1566 | * (from ip_vs_nfct.c) |
Julian Anastasov | f4bc17c | 2010-09-21 17:35:41 +0200 | [diff] [blame] | 1567 | */ |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1568 | static inline int ip_vs_conntrack_enabled(struct netns_ipvs *ipvs) |
Julian Anastasov | f4bc17c | 2010-09-21 17:35:41 +0200 | [diff] [blame] | 1569 | { |
Simon Horman | a4e2f5a | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 1570 | #ifdef CONFIG_SYSCTL |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1571 | return ipvs->sysctl_conntrack; |
Simon Horman | a4e2f5a | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 1572 | #else |
| 1573 | return 0; |
| 1574 | #endif |
Julian Anastasov | f4bc17c | 2010-09-21 17:35:41 +0200 | [diff] [blame] | 1575 | } |
| 1576 | |
Joe Perches | 5c3a0fd | 2013-09-21 10:22:42 -0700 | [diff] [blame] | 1577 | void ip_vs_update_conntrack(struct sk_buff *skb, struct ip_vs_conn *cp, |
| 1578 | int outin); |
| 1579 | int ip_vs_confirm_conntrack(struct sk_buff *skb); |
| 1580 | void ip_vs_nfct_expect_related(struct sk_buff *skb, struct nf_conn *ct, |
| 1581 | struct ip_vs_conn *cp, u_int8_t proto, |
| 1582 | const __be16 port, int from_rs); |
| 1583 | void ip_vs_conn_drop_conntrack(struct ip_vs_conn *cp); |
Julian Anastasov | f4bc17c | 2010-09-21 17:35:41 +0200 | [diff] [blame] | 1584 | |
| 1585 | #else |
| 1586 | |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1587 | static inline int ip_vs_conntrack_enabled(struct netns_ipvs *ipvs) |
Julian Anastasov | f4bc17c | 2010-09-21 17:35:41 +0200 | [diff] [blame] | 1588 | { |
| 1589 | return 0; |
| 1590 | } |
| 1591 | |
| 1592 | static inline void ip_vs_update_conntrack(struct sk_buff *skb, |
| 1593 | struct ip_vs_conn *cp, int outin) |
| 1594 | { |
| 1595 | } |
| 1596 | |
Krzysztof Wilczynski | e23ebf0 | 2011-10-20 13:18:04 +0100 | [diff] [blame] | 1597 | static inline int ip_vs_confirm_conntrack(struct sk_buff *skb) |
Julian Anastasov | f4bc17c | 2010-09-21 17:35:41 +0200 | [diff] [blame] | 1598 | { |
| 1599 | return NF_ACCEPT; |
| 1600 | } |
| 1601 | |
| 1602 | static inline void ip_vs_conn_drop_conntrack(struct ip_vs_conn *cp) |
| 1603 | { |
| 1604 | } |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1605 | #endif /* CONFIG_IP_VS_NFCT */ |
Julian Anastasov | 6523ce1 | 2010-09-05 18:02:29 +0000 | [diff] [blame] | 1606 | |
Julian Anastasov | f719e37 | 2016-03-05 15:03:22 +0200 | [diff] [blame] | 1607 | /* Really using conntrack? */ |
| 1608 | static inline bool ip_vs_conn_uses_conntrack(struct ip_vs_conn *cp, |
| 1609 | struct sk_buff *skb) |
| 1610 | { |
| 1611 | #ifdef CONFIG_IP_VS_NFCT |
| 1612 | enum ip_conntrack_info ctinfo; |
| 1613 | struct nf_conn *ct; |
| 1614 | |
| 1615 | if (!(cp->flags & IP_VS_CONN_F_NFCT)) |
| 1616 | return false; |
| 1617 | ct = nf_ct_get(skb, &ctinfo); |
Florian Westphal | ab8bc7e | 2017-04-14 20:31:09 +0200 | [diff] [blame] | 1618 | if (ct) |
Julian Anastasov | f719e37 | 2016-03-05 15:03:22 +0200 | [diff] [blame] | 1619 | return true; |
| 1620 | #endif |
| 1621 | return false; |
| 1622 | } |
| 1623 | |
Simon Kirby | c16526a | 2013-08-10 01:26:18 -0700 | [diff] [blame] | 1624 | static inline int |
Changli Gao | b552f7e | 2011-02-19 17:32:28 +0800 | [diff] [blame] | 1625 | ip_vs_dest_conn_overhead(struct ip_vs_dest *dest) |
| 1626 | { |
Simon Horman | 07dcc68 | 2014-09-30 10:50:06 +0900 | [diff] [blame] | 1627 | /* We think the overhead of processing active connections is 256 |
Changli Gao | b552f7e | 2011-02-19 17:32:28 +0800 | [diff] [blame] | 1628 | * times higher than that of inactive connections in average. (This |
| 1629 | * 256 times might not be accurate, we will change it later) We |
| 1630 | * use the following formula to estimate the overhead now: |
| 1631 | * dest->activeconns*256 + dest->inactconns |
| 1632 | */ |
| 1633 | return (atomic_read(&dest->activeconns) << 8) + |
| 1634 | atomic_read(&dest->inactconns); |
| 1635 | } |
| 1636 | |
Julius Volz | bc4768e | 2008-07-31 20:45:24 -0700 | [diff] [blame] | 1637 | #endif /* _NET_IP_VS_H */ |