Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * IPVS An implementation of the IP virtual server support for the |
| 3 | * LINUX operating system. IPVS is now implemented as a module |
| 4 | * over the NetFilter framework. IPVS can be used to build a |
| 5 | * high-performance and highly available server based on a |
| 6 | * cluster of servers. |
| 7 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | * Authors: Wensong Zhang <wensong@linuxvirtualserver.org> |
| 9 | * Peter Kese <peter.kese@ijs.si> |
| 10 | * Julian Anastasov <ja@ssi.bg> |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or |
| 13 | * modify it under the terms of the GNU General Public License |
| 14 | * as published by the Free Software Foundation; either version |
| 15 | * 2 of the License, or (at your option) any later version. |
| 16 | * |
| 17 | * Changes: |
| 18 | * |
| 19 | */ |
| 20 | |
Hannes Eder | 9aada7a | 2009-07-30 14:29:44 -0700 | [diff] [blame] | 21 | #define KMSG_COMPONENT "IPVS" |
| 22 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt |
| 23 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <linux/module.h> |
| 25 | #include <linux/init.h> |
| 26 | #include <linux/types.h> |
Randy Dunlap | 4fc268d | 2006-01-11 12:17:47 -0800 | [diff] [blame] | 27 | #include <linux/capability.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/fs.h> |
| 29 | #include <linux/sysctl.h> |
| 30 | #include <linux/proc_fs.h> |
| 31 | #include <linux/workqueue.h> |
| 32 | #include <linux/swap.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <linux/seq_file.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 34 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | |
| 36 | #include <linux/netfilter.h> |
| 37 | #include <linux/netfilter_ipv4.h> |
Ingo Molnar | 14cc3e2 | 2006-03-26 01:37:14 -0800 | [diff] [blame] | 38 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | |
Eric W. Biederman | 457c4cb | 2007-09-12 12:01:34 +0200 | [diff] [blame] | 40 | #include <net/net_namespace.h> |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 41 | #include <linux/nsproxy.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <net/ip.h> |
Vince Busam | 09571c7 | 2008-09-02 15:55:52 +0200 | [diff] [blame] | 43 | #ifdef CONFIG_IP_VS_IPV6 |
| 44 | #include <net/ipv6.h> |
| 45 | #include <net/ip6_route.h> |
| 46 | #endif |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 47 | #include <net/route.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include <net/sock.h> |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 49 | #include <net/genetlink.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
| 51 | #include <asm/uaccess.h> |
| 52 | |
| 53 | #include <net/ip_vs.h> |
| 54 | |
| 55 | /* semaphore for IPVS sockopts. And, [gs]etsockopt may sleep. */ |
Ingo Molnar | 14cc3e2 | 2006-03-26 01:37:14 -0800 | [diff] [blame] | 56 | static DEFINE_MUTEX(__ip_vs_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
| 58 | /* lock for service table */ |
| 59 | static DEFINE_RWLOCK(__ip_vs_svc_lock); |
| 60 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | /* sysctl variables */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
| 63 | #ifdef CONFIG_IP_VS_DEBUG |
| 64 | static int sysctl_ip_vs_debug_level = 0; |
| 65 | |
| 66 | int ip_vs_get_debug_level(void) |
| 67 | { |
| 68 | return sysctl_ip_vs_debug_level; |
| 69 | } |
| 70 | #endif |
| 71 | |
Vince Busam | 09571c7 | 2008-09-02 15:55:52 +0200 | [diff] [blame] | 72 | #ifdef CONFIG_IP_VS_IPV6 |
| 73 | /* Taken from rt6_fill_node() in net/ipv6/route.c, is there a better way? */ |
Hans Schillstrom | 4a98480 | 2011-01-03 14:45:02 +0100 | [diff] [blame] | 74 | static int __ip_vs_addr_is_local_v6(struct net *net, |
| 75 | const struct in6_addr *addr) |
Vince Busam | 09571c7 | 2008-09-02 15:55:52 +0200 | [diff] [blame] | 76 | { |
| 77 | struct rt6_info *rt; |
David S. Miller | 4c9483b | 2011-03-12 16:22:43 -0500 | [diff] [blame] | 78 | struct flowi6 fl6 = { |
| 79 | .daddr = *addr, |
Vince Busam | 09571c7 | 2008-09-02 15:55:52 +0200 | [diff] [blame] | 80 | }; |
| 81 | |
David S. Miller | 4c9483b | 2011-03-12 16:22:43 -0500 | [diff] [blame] | 82 | rt = (struct rt6_info *)ip6_route_output(net, NULL, &fl6); |
Vince Busam | 09571c7 | 2008-09-02 15:55:52 +0200 | [diff] [blame] | 83 | if (rt && rt->rt6i_dev && (rt->rt6i_dev->flags & IFF_LOOPBACK)) |
David S. Miller | 4c9483b | 2011-03-12 16:22:43 -0500 | [diff] [blame] | 84 | return 1; |
Vince Busam | 09571c7 | 2008-09-02 15:55:52 +0200 | [diff] [blame] | 85 | |
| 86 | return 0; |
| 87 | } |
| 88 | #endif |
Simon Horman | 14e4054 | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 89 | |
| 90 | #ifdef CONFIG_SYSCTL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | /* |
Julian Anastasov | af9debd | 2005-07-11 20:59:57 -0700 | [diff] [blame] | 92 | * update_defense_level is called from keventd and from sysctl, |
| 93 | * so it needs to protect itself from softirqs |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | */ |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 95 | static void update_defense_level(struct netns_ipvs *ipvs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | { |
| 97 | struct sysinfo i; |
| 98 | static int old_secure_tcp = 0; |
| 99 | int availmem; |
| 100 | int nomem; |
| 101 | int to_change = -1; |
| 102 | |
| 103 | /* we only count free and buffered memory (in pages) */ |
| 104 | si_meminfo(&i); |
| 105 | availmem = i.freeram + i.bufferram; |
| 106 | /* however in linux 2.5 the i.bufferram is total page cache size, |
| 107 | we need adjust it */ |
| 108 | /* si_swapinfo(&i); */ |
| 109 | /* availmem = availmem - (i.totalswap - i.freeswap); */ |
| 110 | |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 111 | nomem = (availmem < ipvs->sysctl_amemthresh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | |
Julian Anastasov | af9debd | 2005-07-11 20:59:57 -0700 | [diff] [blame] | 113 | local_bh_disable(); |
| 114 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | /* drop_entry */ |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 116 | spin_lock(&ipvs->dropentry_lock); |
| 117 | switch (ipvs->sysctl_drop_entry) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | case 0: |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 119 | atomic_set(&ipvs->dropentry, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | break; |
| 121 | case 1: |
| 122 | if (nomem) { |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 123 | atomic_set(&ipvs->dropentry, 1); |
| 124 | ipvs->sysctl_drop_entry = 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | } else { |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 126 | atomic_set(&ipvs->dropentry, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | } |
| 128 | break; |
| 129 | case 2: |
| 130 | if (nomem) { |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 131 | atomic_set(&ipvs->dropentry, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | } else { |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 133 | atomic_set(&ipvs->dropentry, 0); |
| 134 | ipvs->sysctl_drop_entry = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | }; |
| 136 | break; |
| 137 | case 3: |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 138 | atomic_set(&ipvs->dropentry, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | break; |
| 140 | } |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 141 | spin_unlock(&ipvs->dropentry_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | |
| 143 | /* drop_packet */ |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 144 | spin_lock(&ipvs->droppacket_lock); |
| 145 | switch (ipvs->sysctl_drop_packet) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | case 0: |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 147 | ipvs->drop_rate = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | break; |
| 149 | case 1: |
| 150 | if (nomem) { |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 151 | ipvs->drop_rate = ipvs->drop_counter |
| 152 | = ipvs->sysctl_amemthresh / |
| 153 | (ipvs->sysctl_amemthresh-availmem); |
| 154 | ipvs->sysctl_drop_packet = 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | } else { |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 156 | ipvs->drop_rate = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | } |
| 158 | break; |
| 159 | case 2: |
| 160 | if (nomem) { |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 161 | ipvs->drop_rate = ipvs->drop_counter |
| 162 | = ipvs->sysctl_amemthresh / |
| 163 | (ipvs->sysctl_amemthresh-availmem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | } else { |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 165 | ipvs->drop_rate = 0; |
| 166 | ipvs->sysctl_drop_packet = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | } |
| 168 | break; |
| 169 | case 3: |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 170 | ipvs->drop_rate = ipvs->sysctl_am_droprate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | break; |
| 172 | } |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 173 | spin_unlock(&ipvs->droppacket_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | |
| 175 | /* secure_tcp */ |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 176 | spin_lock(&ipvs->securetcp_lock); |
| 177 | switch (ipvs->sysctl_secure_tcp) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | case 0: |
| 179 | if (old_secure_tcp >= 2) |
| 180 | to_change = 0; |
| 181 | break; |
| 182 | case 1: |
| 183 | if (nomem) { |
| 184 | if (old_secure_tcp < 2) |
| 185 | to_change = 1; |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 186 | ipvs->sysctl_secure_tcp = 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | } else { |
| 188 | if (old_secure_tcp >= 2) |
| 189 | to_change = 0; |
| 190 | } |
| 191 | break; |
| 192 | case 2: |
| 193 | if (nomem) { |
| 194 | if (old_secure_tcp < 2) |
| 195 | to_change = 1; |
| 196 | } else { |
| 197 | if (old_secure_tcp >= 2) |
| 198 | to_change = 0; |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 199 | ipvs->sysctl_secure_tcp = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | } |
| 201 | break; |
| 202 | case 3: |
| 203 | if (old_secure_tcp < 2) |
| 204 | to_change = 1; |
| 205 | break; |
| 206 | } |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 207 | old_secure_tcp = ipvs->sysctl_secure_tcp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | if (to_change >= 0) |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 209 | ip_vs_protocol_timeout_change(ipvs, |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 210 | ipvs->sysctl_secure_tcp > 1); |
| 211 | spin_unlock(&ipvs->securetcp_lock); |
Julian Anastasov | af9debd | 2005-07-11 20:59:57 -0700 | [diff] [blame] | 212 | |
| 213 | local_bh_enable(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | } |
| 215 | |
| 216 | |
| 217 | /* |
| 218 | * Timer for checking the defense |
| 219 | */ |
| 220 | #define DEFENSE_TIMER_PERIOD 1*HZ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 222 | static void defense_work_handler(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | { |
Hans Schillstrom | f6340ee | 2011-01-03 14:44:59 +0100 | [diff] [blame] | 224 | struct netns_ipvs *ipvs = |
| 225 | container_of(work, struct netns_ipvs, defense_work.work); |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 226 | |
| 227 | update_defense_level(ipvs); |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 228 | if (atomic_read(&ipvs->dropentry)) |
Hans Schillstrom | f6340ee | 2011-01-03 14:44:59 +0100 | [diff] [blame] | 229 | ip_vs_random_dropentry(ipvs->net); |
| 230 | schedule_delayed_work(&ipvs->defense_work, DEFENSE_TIMER_PERIOD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | } |
Simon Horman | 14e4054 | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 232 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | |
| 234 | int |
| 235 | ip_vs_use_count_inc(void) |
| 236 | { |
| 237 | return try_module_get(THIS_MODULE); |
| 238 | } |
| 239 | |
| 240 | void |
| 241 | ip_vs_use_count_dec(void) |
| 242 | { |
| 243 | module_put(THIS_MODULE); |
| 244 | } |
| 245 | |
| 246 | |
| 247 | /* |
| 248 | * Hash table: for virtual service lookups |
| 249 | */ |
| 250 | #define IP_VS_SVC_TAB_BITS 8 |
| 251 | #define IP_VS_SVC_TAB_SIZE (1 << IP_VS_SVC_TAB_BITS) |
| 252 | #define IP_VS_SVC_TAB_MASK (IP_VS_SVC_TAB_SIZE - 1) |
| 253 | |
| 254 | /* the service table hashed by <protocol, addr, port> */ |
| 255 | static struct list_head ip_vs_svc_table[IP_VS_SVC_TAB_SIZE]; |
| 256 | /* the service table hashed by fwmark */ |
| 257 | static struct list_head ip_vs_svc_fwm_table[IP_VS_SVC_TAB_SIZE]; |
| 258 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | |
| 260 | /* |
| 261 | * Returns hash value for virtual service |
| 262 | */ |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 263 | static inline unsigned |
| 264 | ip_vs_svc_hashkey(struct net *net, int af, unsigned proto, |
| 265 | const union nf_inet_addr *addr, __be16 port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | { |
| 267 | register unsigned porth = ntohs(port); |
Julius Volz | b18610d | 2008-09-02 15:55:37 +0200 | [diff] [blame] | 268 | __be32 addr_fold = addr->ip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | |
Julius Volz | b18610d | 2008-09-02 15:55:37 +0200 | [diff] [blame] | 270 | #ifdef CONFIG_IP_VS_IPV6 |
| 271 | if (af == AF_INET6) |
| 272 | addr_fold = addr->ip6[0]^addr->ip6[1]^ |
| 273 | addr->ip6[2]^addr->ip6[3]; |
| 274 | #endif |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 275 | addr_fold ^= ((size_t)net>>8); |
Julius Volz | b18610d | 2008-09-02 15:55:37 +0200 | [diff] [blame] | 276 | |
| 277 | return (proto^ntohl(addr_fold)^(porth>>IP_VS_SVC_TAB_BITS)^porth) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | & IP_VS_SVC_TAB_MASK; |
| 279 | } |
| 280 | |
| 281 | /* |
| 282 | * Returns hash value of fwmark for virtual service lookup |
| 283 | */ |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 284 | static inline unsigned ip_vs_svc_fwm_hashkey(struct net *net, __u32 fwmark) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 286 | return (((size_t)net>>8) ^ fwmark) & IP_VS_SVC_TAB_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | } |
| 288 | |
| 289 | /* |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 290 | * Hashes a service in the ip_vs_svc_table by <netns,proto,addr,port> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | * or in the ip_vs_svc_fwm_table by fwmark. |
| 292 | * Should be called with locked tables. |
| 293 | */ |
| 294 | static int ip_vs_svc_hash(struct ip_vs_service *svc) |
| 295 | { |
| 296 | unsigned hash; |
| 297 | |
| 298 | if (svc->flags & IP_VS_SVC_F_HASHED) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 299 | pr_err("%s(): request for already hashed, called from %pF\n", |
| 300 | __func__, __builtin_return_address(0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | return 0; |
| 302 | } |
| 303 | |
| 304 | if (svc->fwmark == 0) { |
| 305 | /* |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 306 | * Hash it by <netns,protocol,addr,port> in ip_vs_svc_table |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | */ |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 308 | hash = ip_vs_svc_hashkey(svc->net, svc->af, svc->protocol, |
| 309 | &svc->addr, svc->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | list_add(&svc->s_list, &ip_vs_svc_table[hash]); |
| 311 | } else { |
| 312 | /* |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 313 | * Hash it by fwmark in svc_fwm_table |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | */ |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 315 | hash = ip_vs_svc_fwm_hashkey(svc->net, svc->fwmark); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | list_add(&svc->f_list, &ip_vs_svc_fwm_table[hash]); |
| 317 | } |
| 318 | |
| 319 | svc->flags |= IP_VS_SVC_F_HASHED; |
| 320 | /* increase its refcnt because it is referenced by the svc table */ |
| 321 | atomic_inc(&svc->refcnt); |
| 322 | return 1; |
| 323 | } |
| 324 | |
| 325 | |
| 326 | /* |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 327 | * Unhashes a service from svc_table / svc_fwm_table. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | * Should be called with locked tables. |
| 329 | */ |
| 330 | static int ip_vs_svc_unhash(struct ip_vs_service *svc) |
| 331 | { |
| 332 | if (!(svc->flags & IP_VS_SVC_F_HASHED)) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 333 | pr_err("%s(): request for unhash flagged, called from %pF\n", |
| 334 | __func__, __builtin_return_address(0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | return 0; |
| 336 | } |
| 337 | |
| 338 | if (svc->fwmark == 0) { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 339 | /* Remove it from the svc_table table */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | list_del(&svc->s_list); |
| 341 | } else { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 342 | /* Remove it from the svc_fwm_table table */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | list_del(&svc->f_list); |
| 344 | } |
| 345 | |
| 346 | svc->flags &= ~IP_VS_SVC_F_HASHED; |
| 347 | atomic_dec(&svc->refcnt); |
| 348 | return 1; |
| 349 | } |
| 350 | |
| 351 | |
| 352 | /* |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 353 | * Get service by {netns, proto,addr,port} in the service table. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | */ |
Julius Volz | b18610d | 2008-09-02 15:55:37 +0200 | [diff] [blame] | 355 | static inline struct ip_vs_service * |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 356 | __ip_vs_service_find(struct net *net, int af, __u16 protocol, |
| 357 | const union nf_inet_addr *vaddr, __be16 vport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | { |
| 359 | unsigned hash; |
| 360 | struct ip_vs_service *svc; |
| 361 | |
| 362 | /* Check for "full" addressed entries */ |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 363 | hash = ip_vs_svc_hashkey(net, af, protocol, vaddr, vport); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | |
| 365 | list_for_each_entry(svc, &ip_vs_svc_table[hash], s_list){ |
Julius Volz | b18610d | 2008-09-02 15:55:37 +0200 | [diff] [blame] | 366 | if ((svc->af == af) |
| 367 | && ip_vs_addr_equal(af, &svc->addr, vaddr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | && (svc->port == vport) |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 369 | && (svc->protocol == protocol) |
| 370 | && net_eq(svc->net, net)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | /* HIT */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | return svc; |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | return NULL; |
| 377 | } |
| 378 | |
| 379 | |
| 380 | /* |
| 381 | * Get service by {fwmark} in the service table. |
| 382 | */ |
Julius Volz | b18610d | 2008-09-02 15:55:37 +0200 | [diff] [blame] | 383 | static inline struct ip_vs_service * |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 384 | __ip_vs_svc_fwm_find(struct net *net, int af, __u32 fwmark) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | { |
| 386 | unsigned hash; |
| 387 | struct ip_vs_service *svc; |
| 388 | |
| 389 | /* Check for fwmark addressed entries */ |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 390 | hash = ip_vs_svc_fwm_hashkey(net, fwmark); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | |
| 392 | list_for_each_entry(svc, &ip_vs_svc_fwm_table[hash], f_list) { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 393 | if (svc->fwmark == fwmark && svc->af == af |
| 394 | && net_eq(svc->net, net)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | /* HIT */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | return svc; |
| 397 | } |
| 398 | } |
| 399 | |
| 400 | return NULL; |
| 401 | } |
| 402 | |
| 403 | struct ip_vs_service * |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 404 | ip_vs_service_get(struct net *net, int af, __u32 fwmark, __u16 protocol, |
Julius Volz | 3c2e050 | 2008-09-02 15:55:38 +0200 | [diff] [blame] | 405 | const union nf_inet_addr *vaddr, __be16 vport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | { |
| 407 | struct ip_vs_service *svc; |
Hans Schillstrom | 763f8d0 | 2011-01-03 14:45:01 +0100 | [diff] [blame] | 408 | struct netns_ipvs *ipvs = net_ipvs(net); |
Julius Volz | 3c2e050 | 2008-09-02 15:55:38 +0200 | [diff] [blame] | 409 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | read_lock(&__ip_vs_svc_lock); |
| 411 | |
| 412 | /* |
| 413 | * Check the table hashed by fwmark first |
| 414 | */ |
Julian Anastasov | 097fc76 | 2011-03-04 12:26:17 +0200 | [diff] [blame] | 415 | if (fwmark) { |
| 416 | svc = __ip_vs_svc_fwm_find(net, af, fwmark); |
| 417 | if (svc) |
| 418 | goto out; |
| 419 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | |
| 421 | /* |
| 422 | * Check the table hashed by <protocol,addr,port> |
| 423 | * for "full" addressed entries |
| 424 | */ |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 425 | svc = __ip_vs_service_find(net, af, protocol, vaddr, vport); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | |
| 427 | if (svc == NULL |
| 428 | && protocol == IPPROTO_TCP |
Hans Schillstrom | 763f8d0 | 2011-01-03 14:45:01 +0100 | [diff] [blame] | 429 | && atomic_read(&ipvs->ftpsvc_counter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | && (vport == FTPDATA || ntohs(vport) >= PROT_SOCK)) { |
| 431 | /* |
| 432 | * Check if ftp service entry exists, the packet |
| 433 | * might belong to FTP data connections. |
| 434 | */ |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 435 | svc = __ip_vs_service_find(net, af, protocol, vaddr, FTPPORT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | } |
| 437 | |
| 438 | if (svc == NULL |
Hans Schillstrom | 763f8d0 | 2011-01-03 14:45:01 +0100 | [diff] [blame] | 439 | && atomic_read(&ipvs->nullsvc_counter)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | /* |
| 441 | * Check if the catch-all port (port zero) exists |
| 442 | */ |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 443 | svc = __ip_vs_service_find(net, af, protocol, vaddr, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | } |
| 445 | |
| 446 | out: |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 447 | if (svc) |
| 448 | atomic_inc(&svc->usecnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | read_unlock(&__ip_vs_svc_lock); |
| 450 | |
Julius Volz | 3c2e050 | 2008-09-02 15:55:38 +0200 | [diff] [blame] | 451 | IP_VS_DBG_BUF(9, "lookup service: fwm %u %s %s:%u %s\n", |
| 452 | fwmark, ip_vs_proto_name(protocol), |
| 453 | IP_VS_DBG_ADDR(af, vaddr), ntohs(vport), |
| 454 | svc ? "hit" : "not hit"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | |
| 456 | return svc; |
| 457 | } |
| 458 | |
| 459 | |
| 460 | static inline void |
| 461 | __ip_vs_bind_svc(struct ip_vs_dest *dest, struct ip_vs_service *svc) |
| 462 | { |
| 463 | atomic_inc(&svc->refcnt); |
| 464 | dest->svc = svc; |
| 465 | } |
| 466 | |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 467 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | __ip_vs_unbind_svc(struct ip_vs_dest *dest) |
| 469 | { |
| 470 | struct ip_vs_service *svc = dest->svc; |
| 471 | |
| 472 | dest->svc = NULL; |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 473 | if (atomic_dec_and_test(&svc->refcnt)) { |
| 474 | IP_VS_DBG_BUF(3, "Removing service %u/%s:%u usecnt=%d\n", |
| 475 | svc->fwmark, |
| 476 | IP_VS_DBG_ADDR(svc->af, &svc->addr), |
| 477 | ntohs(svc->port), atomic_read(&svc->usecnt)); |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 478 | free_percpu(svc->stats.cpustats); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | kfree(svc); |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 480 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | } |
| 482 | |
| 483 | |
| 484 | /* |
| 485 | * Returns hash value for real service |
| 486 | */ |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 487 | static inline unsigned ip_vs_rs_hashkey(int af, |
| 488 | const union nf_inet_addr *addr, |
| 489 | __be16 port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | { |
| 491 | register unsigned porth = ntohs(port); |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 492 | __be32 addr_fold = addr->ip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 494 | #ifdef CONFIG_IP_VS_IPV6 |
| 495 | if (af == AF_INET6) |
| 496 | addr_fold = addr->ip6[0]^addr->ip6[1]^ |
| 497 | addr->ip6[2]^addr->ip6[3]; |
| 498 | #endif |
| 499 | |
| 500 | return (ntohl(addr_fold)^(porth>>IP_VS_RTAB_BITS)^porth) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | & IP_VS_RTAB_MASK; |
| 502 | } |
| 503 | |
| 504 | /* |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 505 | * Hashes ip_vs_dest in rs_table by <proto,addr,port>. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | * should be called with locked tables. |
| 507 | */ |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 508 | static int ip_vs_rs_hash(struct netns_ipvs *ipvs, struct ip_vs_dest *dest) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | { |
| 510 | unsigned hash; |
| 511 | |
| 512 | if (!list_empty(&dest->d_list)) { |
| 513 | return 0; |
| 514 | } |
| 515 | |
| 516 | /* |
| 517 | * Hash by proto,addr,port, |
| 518 | * which are the parameters of the real service. |
| 519 | */ |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 520 | hash = ip_vs_rs_hashkey(dest->af, &dest->addr, dest->port); |
| 521 | |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 522 | list_add(&dest->d_list, &ipvs->rs_table[hash]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | |
| 524 | return 1; |
| 525 | } |
| 526 | |
| 527 | /* |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 528 | * UNhashes ip_vs_dest from rs_table. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | * should be called with locked tables. |
| 530 | */ |
| 531 | static int ip_vs_rs_unhash(struct ip_vs_dest *dest) |
| 532 | { |
| 533 | /* |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 534 | * Remove it from the rs_table table. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | */ |
| 536 | if (!list_empty(&dest->d_list)) { |
| 537 | list_del(&dest->d_list); |
| 538 | INIT_LIST_HEAD(&dest->d_list); |
| 539 | } |
| 540 | |
| 541 | return 1; |
| 542 | } |
| 543 | |
| 544 | /* |
| 545 | * Lookup real service by <proto,addr,port> in the real service table. |
| 546 | */ |
| 547 | struct ip_vs_dest * |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 548 | ip_vs_lookup_real_service(struct net *net, int af, __u16 protocol, |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 549 | const union nf_inet_addr *daddr, |
| 550 | __be16 dport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 552 | struct netns_ipvs *ipvs = net_ipvs(net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | unsigned hash; |
| 554 | struct ip_vs_dest *dest; |
| 555 | |
| 556 | /* |
| 557 | * Check for "full" addressed entries |
| 558 | * Return the first found entry |
| 559 | */ |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 560 | hash = ip_vs_rs_hashkey(af, daddr, dport); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 562 | read_lock(&ipvs->rs_lock); |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 563 | list_for_each_entry(dest, &ipvs->rs_table[hash], d_list) { |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 564 | if ((dest->af == af) |
| 565 | && ip_vs_addr_equal(af, &dest->addr, daddr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | && (dest->port == dport) |
| 567 | && ((dest->protocol == protocol) || |
| 568 | dest->vfwmark)) { |
| 569 | /* HIT */ |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 570 | read_unlock(&ipvs->rs_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | return dest; |
| 572 | } |
| 573 | } |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 574 | read_unlock(&ipvs->rs_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | |
| 576 | return NULL; |
| 577 | } |
| 578 | |
| 579 | /* |
| 580 | * Lookup destination by {addr,port} in the given service |
| 581 | */ |
| 582 | static struct ip_vs_dest * |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 583 | ip_vs_lookup_dest(struct ip_vs_service *svc, const union nf_inet_addr *daddr, |
| 584 | __be16 dport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | { |
| 586 | struct ip_vs_dest *dest; |
| 587 | |
| 588 | /* |
| 589 | * Find the destination for the given service |
| 590 | */ |
| 591 | list_for_each_entry(dest, &svc->destinations, n_list) { |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 592 | if ((dest->af == svc->af) |
| 593 | && ip_vs_addr_equal(svc->af, &dest->addr, daddr) |
| 594 | && (dest->port == dport)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | /* HIT */ |
| 596 | return dest; |
| 597 | } |
| 598 | } |
| 599 | |
| 600 | return NULL; |
| 601 | } |
| 602 | |
Rumen G. Bogdanovski | 1e356f9 | 2007-11-07 02:35:54 -0800 | [diff] [blame] | 603 | /* |
| 604 | * Find destination by {daddr,dport,vaddr,protocol} |
| 605 | * Cretaed to be used in ip_vs_process_message() in |
| 606 | * the backup synchronization daemon. It finds the |
| 607 | * destination to be bound to the received connection |
| 608 | * on the backup. |
| 609 | * |
| 610 | * ip_vs_lookup_real_service() looked promissing, but |
| 611 | * seems not working as expected. |
| 612 | */ |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 613 | struct ip_vs_dest *ip_vs_find_dest(struct net *net, int af, |
| 614 | const union nf_inet_addr *daddr, |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 615 | __be16 dport, |
| 616 | const union nf_inet_addr *vaddr, |
Hans Schillstrom | 0e051e6 | 2010-11-19 14:25:07 +0100 | [diff] [blame] | 617 | __be16 vport, __u16 protocol, __u32 fwmark) |
Rumen G. Bogdanovski | 1e356f9 | 2007-11-07 02:35:54 -0800 | [diff] [blame] | 618 | { |
| 619 | struct ip_vs_dest *dest; |
| 620 | struct ip_vs_service *svc; |
| 621 | |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 622 | svc = ip_vs_service_get(net, af, fwmark, protocol, vaddr, vport); |
Rumen G. Bogdanovski | 1e356f9 | 2007-11-07 02:35:54 -0800 | [diff] [blame] | 623 | if (!svc) |
| 624 | return NULL; |
| 625 | dest = ip_vs_lookup_dest(svc, daddr, dport); |
| 626 | if (dest) |
| 627 | atomic_inc(&dest->refcnt); |
| 628 | ip_vs_service_put(svc); |
| 629 | return dest; |
| 630 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | |
| 632 | /* |
| 633 | * Lookup dest by {svc,addr,port} in the destination trash. |
| 634 | * The destination trash is used to hold the destinations that are removed |
| 635 | * from the service table but are still referenced by some conn entries. |
| 636 | * The reason to add the destination trash is when the dest is temporary |
| 637 | * down (either by administrator or by monitor program), the dest can be |
| 638 | * picked back from the trash, the remaining connections to the dest can |
| 639 | * continue, and the counting information of the dest is also useful for |
| 640 | * scheduling. |
| 641 | */ |
| 642 | static struct ip_vs_dest * |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 643 | ip_vs_trash_get_dest(struct ip_vs_service *svc, const union nf_inet_addr *daddr, |
| 644 | __be16 dport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | { |
| 646 | struct ip_vs_dest *dest, *nxt; |
Hans Schillstrom | f2431e6 | 2011-01-03 14:45:00 +0100 | [diff] [blame] | 647 | struct netns_ipvs *ipvs = net_ipvs(svc->net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | |
| 649 | /* |
| 650 | * Find the destination in trash |
| 651 | */ |
Hans Schillstrom | f2431e6 | 2011-01-03 14:45:00 +0100 | [diff] [blame] | 652 | list_for_each_entry_safe(dest, nxt, &ipvs->dest_trash, n_list) { |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 653 | IP_VS_DBG_BUF(3, "Destination %u/%s:%u still in trash, " |
| 654 | "dest->refcnt=%d\n", |
| 655 | dest->vfwmark, |
| 656 | IP_VS_DBG_ADDR(svc->af, &dest->addr), |
| 657 | ntohs(dest->port), |
| 658 | atomic_read(&dest->refcnt)); |
| 659 | if (dest->af == svc->af && |
| 660 | ip_vs_addr_equal(svc->af, &dest->addr, daddr) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | dest->port == dport && |
| 662 | dest->vfwmark == svc->fwmark && |
| 663 | dest->protocol == svc->protocol && |
| 664 | (svc->fwmark || |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 665 | (ip_vs_addr_equal(svc->af, &dest->vaddr, &svc->addr) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | dest->vport == svc->port))) { |
| 667 | /* HIT */ |
| 668 | return dest; |
| 669 | } |
| 670 | |
| 671 | /* |
| 672 | * Try to purge the destination from trash if not referenced |
| 673 | */ |
| 674 | if (atomic_read(&dest->refcnt) == 1) { |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 675 | IP_VS_DBG_BUF(3, "Removing destination %u/%s:%u " |
| 676 | "from trash\n", |
| 677 | dest->vfwmark, |
| 678 | IP_VS_DBG_ADDR(svc->af, &dest->addr), |
| 679 | ntohs(dest->port)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | list_del(&dest->n_list); |
| 681 | ip_vs_dst_reset(dest); |
| 682 | __ip_vs_unbind_svc(dest); |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 683 | free_percpu(dest->stats.cpustats); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | kfree(dest); |
| 685 | } |
| 686 | } |
| 687 | |
| 688 | return NULL; |
| 689 | } |
| 690 | |
| 691 | |
| 692 | /* |
| 693 | * Clean up all the destinations in the trash |
| 694 | * Called by the ip_vs_control_cleanup() |
| 695 | * |
| 696 | * When the ip_vs_control_clearup is activated by ipvs module exit, |
| 697 | * the service tables must have been flushed and all the connections |
| 698 | * are expired, and the refcnt of each destination in the trash must |
| 699 | * be 1, so we simply release them here. |
| 700 | */ |
Hans Schillstrom | f2431e6 | 2011-01-03 14:45:00 +0100 | [diff] [blame] | 701 | static void ip_vs_trash_cleanup(struct net *net) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | { |
| 703 | struct ip_vs_dest *dest, *nxt; |
Hans Schillstrom | f2431e6 | 2011-01-03 14:45:00 +0100 | [diff] [blame] | 704 | struct netns_ipvs *ipvs = net_ipvs(net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | |
Hans Schillstrom | f2431e6 | 2011-01-03 14:45:00 +0100 | [diff] [blame] | 706 | list_for_each_entry_safe(dest, nxt, &ipvs->dest_trash, n_list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | list_del(&dest->n_list); |
| 708 | ip_vs_dst_reset(dest); |
| 709 | __ip_vs_unbind_svc(dest); |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 710 | free_percpu(dest->stats.cpustats); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | kfree(dest); |
| 712 | } |
| 713 | } |
| 714 | |
Julian Anastasov | 55a3d4e | 2011-03-14 01:37:49 +0200 | [diff] [blame] | 715 | static void |
| 716 | ip_vs_copy_stats(struct ip_vs_stats_user *dst, struct ip_vs_stats *src) |
| 717 | { |
| 718 | #define IP_VS_SHOW_STATS_COUNTER(c) dst->c = src->ustats.c - src->ustats0.c |
Julian Anastasov | 55a3d4e | 2011-03-14 01:37:49 +0200 | [diff] [blame] | 719 | |
| 720 | spin_lock_bh(&src->lock); |
| 721 | |
| 722 | IP_VS_SHOW_STATS_COUNTER(conns); |
| 723 | IP_VS_SHOW_STATS_COUNTER(inpkts); |
| 724 | IP_VS_SHOW_STATS_COUNTER(outpkts); |
| 725 | IP_VS_SHOW_STATS_COUNTER(inbytes); |
| 726 | IP_VS_SHOW_STATS_COUNTER(outbytes); |
| 727 | |
Julian Anastasov | ea9f22c | 2011-03-14 01:41:54 +0200 | [diff] [blame] | 728 | ip_vs_read_estimator(dst, src); |
Julian Anastasov | 55a3d4e | 2011-03-14 01:37:49 +0200 | [diff] [blame] | 729 | |
| 730 | spin_unlock_bh(&src->lock); |
| 731 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | |
| 733 | static void |
| 734 | ip_vs_zero_stats(struct ip_vs_stats *stats) |
| 735 | { |
| 736 | spin_lock_bh(&stats->lock); |
Simon Horman | e93615d | 2008-08-11 17:19:14 +1000 | [diff] [blame] | 737 | |
Julian Anastasov | 55a3d4e | 2011-03-14 01:37:49 +0200 | [diff] [blame] | 738 | /* get current counters as zero point, rates are zeroed */ |
| 739 | |
| 740 | #define IP_VS_ZERO_STATS_COUNTER(c) stats->ustats0.c = stats->ustats.c |
Julian Anastasov | 55a3d4e | 2011-03-14 01:37:49 +0200 | [diff] [blame] | 741 | |
| 742 | IP_VS_ZERO_STATS_COUNTER(conns); |
| 743 | IP_VS_ZERO_STATS_COUNTER(inpkts); |
| 744 | IP_VS_ZERO_STATS_COUNTER(outpkts); |
| 745 | IP_VS_ZERO_STATS_COUNTER(inbytes); |
| 746 | IP_VS_ZERO_STATS_COUNTER(outbytes); |
| 747 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | ip_vs_zero_estimator(stats); |
Simon Horman | e93615d | 2008-08-11 17:19:14 +1000 | [diff] [blame] | 749 | |
Sven Wegener | 3a14a313 | 2008-08-10 18:24:41 +0000 | [diff] [blame] | 750 | spin_unlock_bh(&stats->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | } |
| 752 | |
| 753 | /* |
| 754 | * Update a destination in the given service |
| 755 | */ |
| 756 | static void |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 757 | __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest, |
| 758 | struct ip_vs_dest_user_kern *udest, int add) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 760 | struct netns_ipvs *ipvs = net_ipvs(svc->net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | int conn_flags; |
| 762 | |
| 763 | /* set the weight and the flags */ |
| 764 | atomic_set(&dest->weight, udest->weight); |
Julian Anastasov | 3575792 | 2010-09-17 14:18:16 +0200 | [diff] [blame] | 765 | conn_flags = udest->conn_flags & IP_VS_CONN_F_DEST_MASK; |
| 766 | conn_flags |= IP_VS_CONN_F_INACTIVE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | /* set the IP_VS_CONN_F_NOOUTPUT flag if not masquerading/NAT */ |
Julian Anastasov | 3575792 | 2010-09-17 14:18:16 +0200 | [diff] [blame] | 769 | if ((conn_flags & IP_VS_CONN_F_FWD_MASK) != IP_VS_CONN_F_MASQ) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | conn_flags |= IP_VS_CONN_F_NOOUTPUT; |
| 771 | } else { |
| 772 | /* |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 773 | * Put the real service in rs_table if not present. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | * For now only for NAT! |
| 775 | */ |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 776 | write_lock_bh(&ipvs->rs_lock); |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 777 | ip_vs_rs_hash(ipvs, dest); |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 778 | write_unlock_bh(&ipvs->rs_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | } |
| 780 | atomic_set(&dest->conn_flags, conn_flags); |
| 781 | |
| 782 | /* bind the service */ |
| 783 | if (!dest->svc) { |
| 784 | __ip_vs_bind_svc(dest, svc); |
| 785 | } else { |
| 786 | if (dest->svc != svc) { |
| 787 | __ip_vs_unbind_svc(dest); |
| 788 | ip_vs_zero_stats(&dest->stats); |
| 789 | __ip_vs_bind_svc(dest, svc); |
| 790 | } |
| 791 | } |
| 792 | |
| 793 | /* set the dest status flags */ |
| 794 | dest->flags |= IP_VS_DEST_F_AVAILABLE; |
| 795 | |
| 796 | if (udest->u_threshold == 0 || udest->u_threshold > dest->u_threshold) |
| 797 | dest->flags &= ~IP_VS_DEST_F_OVERLOAD; |
| 798 | dest->u_threshold = udest->u_threshold; |
| 799 | dest->l_threshold = udest->l_threshold; |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 800 | |
Julian Anastasov | ff75f40 | 2011-02-22 10:40:25 +0200 | [diff] [blame] | 801 | spin_lock_bh(&dest->dst_lock); |
Julian Anastasov | fc60476 | 2010-10-17 16:38:15 +0300 | [diff] [blame] | 802 | ip_vs_dst_reset(dest); |
Julian Anastasov | ff75f40 | 2011-02-22 10:40:25 +0200 | [diff] [blame] | 803 | spin_unlock_bh(&dest->dst_lock); |
Julian Anastasov | fc60476 | 2010-10-17 16:38:15 +0300 | [diff] [blame] | 804 | |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 805 | if (add) |
Julian Anastasov | 6ef757f | 2011-03-14 01:44:28 +0200 | [diff] [blame] | 806 | ip_vs_start_estimator(svc->net, &dest->stats); |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 807 | |
| 808 | write_lock_bh(&__ip_vs_svc_lock); |
| 809 | |
| 810 | /* Wait until all other svc users go away */ |
| 811 | IP_VS_WAIT_WHILE(atomic_read(&svc->usecnt) > 0); |
| 812 | |
| 813 | if (add) { |
| 814 | list_add(&dest->n_list, &svc->destinations); |
| 815 | svc->num_dests++; |
| 816 | } |
| 817 | |
| 818 | /* call the update_service, because server weight may be changed */ |
| 819 | if (svc->scheduler->update_service) |
| 820 | svc->scheduler->update_service(svc); |
| 821 | |
| 822 | write_unlock_bh(&__ip_vs_svc_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | } |
| 824 | |
| 825 | |
| 826 | /* |
| 827 | * Create a destination for the given service |
| 828 | */ |
| 829 | static int |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 830 | ip_vs_new_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | struct ip_vs_dest **dest_p) |
| 832 | { |
| 833 | struct ip_vs_dest *dest; |
| 834 | unsigned atype; |
| 835 | |
| 836 | EnterFunction(2); |
| 837 | |
Vince Busam | 09571c7 | 2008-09-02 15:55:52 +0200 | [diff] [blame] | 838 | #ifdef CONFIG_IP_VS_IPV6 |
| 839 | if (svc->af == AF_INET6) { |
| 840 | atype = ipv6_addr_type(&udest->addr.in6); |
Sven Wegener | 3bfb92f | 2008-09-05 16:53:49 +0200 | [diff] [blame] | 841 | if ((!(atype & IPV6_ADDR_UNICAST) || |
| 842 | atype & IPV6_ADDR_LINKLOCAL) && |
Hans Schillstrom | 4a98480 | 2011-01-03 14:45:02 +0100 | [diff] [blame] | 843 | !__ip_vs_addr_is_local_v6(svc->net, &udest->addr.in6)) |
Vince Busam | 09571c7 | 2008-09-02 15:55:52 +0200 | [diff] [blame] | 844 | return -EINVAL; |
| 845 | } else |
| 846 | #endif |
| 847 | { |
Hans Schillstrom | 4a98480 | 2011-01-03 14:45:02 +0100 | [diff] [blame] | 848 | atype = inet_addr_type(svc->net, udest->addr.ip); |
Vince Busam | 09571c7 | 2008-09-02 15:55:52 +0200 | [diff] [blame] | 849 | if (atype != RTN_LOCAL && atype != RTN_UNICAST) |
| 850 | return -EINVAL; |
| 851 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | |
Simon Horman | dee06e4 | 2010-08-26 02:54:31 +0000 | [diff] [blame] | 853 | dest = kzalloc(sizeof(struct ip_vs_dest), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | if (dest == NULL) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 855 | pr_err("%s(): no memory.\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | return -ENOMEM; |
| 857 | } |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 858 | dest->stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats); |
| 859 | if (!dest->stats.cpustats) { |
| 860 | pr_err("%s() alloc_percpu failed\n", __func__); |
| 861 | goto err_alloc; |
| 862 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 864 | dest->af = svc->af; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | dest->protocol = svc->protocol; |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 866 | dest->vaddr = svc->addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | dest->vport = svc->port; |
| 868 | dest->vfwmark = svc->fwmark; |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 869 | ip_vs_addr_copy(svc->af, &dest->addr, &udest->addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | dest->port = udest->port; |
| 871 | |
| 872 | atomic_set(&dest->activeconns, 0); |
| 873 | atomic_set(&dest->inactconns, 0); |
| 874 | atomic_set(&dest->persistconns, 0); |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 875 | atomic_set(&dest->refcnt, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | |
| 877 | INIT_LIST_HEAD(&dest->d_list); |
| 878 | spin_lock_init(&dest->dst_lock); |
| 879 | spin_lock_init(&dest->stats.lock); |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 880 | __ip_vs_update_dest(svc, dest, udest, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | |
| 882 | *dest_p = dest; |
| 883 | |
| 884 | LeaveFunction(2); |
| 885 | return 0; |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 886 | |
| 887 | err_alloc: |
| 888 | kfree(dest); |
| 889 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | } |
| 891 | |
| 892 | |
| 893 | /* |
| 894 | * Add a destination into an existing service |
| 895 | */ |
| 896 | static int |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 897 | ip_vs_add_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | { |
| 899 | struct ip_vs_dest *dest; |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 900 | union nf_inet_addr daddr; |
Al Viro | 014d730 | 2006-09-28 14:29:52 -0700 | [diff] [blame] | 901 | __be16 dport = udest->port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | int ret; |
| 903 | |
| 904 | EnterFunction(2); |
| 905 | |
| 906 | if (udest->weight < 0) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 907 | pr_err("%s(): server weight less than zero\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | return -ERANGE; |
| 909 | } |
| 910 | |
| 911 | if (udest->l_threshold > udest->u_threshold) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 912 | pr_err("%s(): lower threshold is higher than upper threshold\n", |
| 913 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | return -ERANGE; |
| 915 | } |
| 916 | |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 917 | ip_vs_addr_copy(svc->af, &daddr, &udest->addr); |
| 918 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | /* |
| 920 | * Check if the dest already exists in the list |
| 921 | */ |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 922 | dest = ip_vs_lookup_dest(svc, &daddr, dport); |
| 923 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | if (dest != NULL) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 925 | IP_VS_DBG(1, "%s(): dest already exists\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | return -EEXIST; |
| 927 | } |
| 928 | |
| 929 | /* |
| 930 | * Check if the dest already exists in the trash and |
| 931 | * is from the same service |
| 932 | */ |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 933 | dest = ip_vs_trash_get_dest(svc, &daddr, dport); |
| 934 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | if (dest != NULL) { |
Julius Volz | cfc78c5 | 2008-09-02 15:55:53 +0200 | [diff] [blame] | 936 | IP_VS_DBG_BUF(3, "Get destination %s:%u from trash, " |
| 937 | "dest->refcnt=%d, service %u/%s:%u\n", |
| 938 | IP_VS_DBG_ADDR(svc->af, &daddr), ntohs(dport), |
| 939 | atomic_read(&dest->refcnt), |
| 940 | dest->vfwmark, |
| 941 | IP_VS_DBG_ADDR(svc->af, &dest->vaddr), |
| 942 | ntohs(dest->vport)); |
| 943 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | /* |
| 945 | * Get the destination from the trash |
| 946 | */ |
| 947 | list_del(&dest->n_list); |
| 948 | |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 949 | __ip_vs_update_dest(svc, dest, udest, 1); |
| 950 | ret = 0; |
| 951 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | /* |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 953 | * Allocate and initialize the dest structure |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | */ |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 955 | ret = ip_vs_new_dest(svc, udest, &dest); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | LeaveFunction(2); |
| 958 | |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 959 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | } |
| 961 | |
| 962 | |
| 963 | /* |
| 964 | * Edit a destination in the given service |
| 965 | */ |
| 966 | static int |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 967 | ip_vs_edit_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | { |
| 969 | struct ip_vs_dest *dest; |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 970 | union nf_inet_addr daddr; |
Al Viro | 014d730 | 2006-09-28 14:29:52 -0700 | [diff] [blame] | 971 | __be16 dport = udest->port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | |
| 973 | EnterFunction(2); |
| 974 | |
| 975 | if (udest->weight < 0) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 976 | pr_err("%s(): server weight less than zero\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | return -ERANGE; |
| 978 | } |
| 979 | |
| 980 | if (udest->l_threshold > udest->u_threshold) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 981 | pr_err("%s(): lower threshold is higher than upper threshold\n", |
| 982 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | return -ERANGE; |
| 984 | } |
| 985 | |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 986 | ip_vs_addr_copy(svc->af, &daddr, &udest->addr); |
| 987 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | /* |
| 989 | * Lookup the destination list |
| 990 | */ |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 991 | dest = ip_vs_lookup_dest(svc, &daddr, dport); |
| 992 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | if (dest == NULL) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 994 | IP_VS_DBG(1, "%s(): dest doesn't exist\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 995 | return -ENOENT; |
| 996 | } |
| 997 | |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 998 | __ip_vs_update_dest(svc, dest, udest, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 999 | LeaveFunction(2); |
| 1000 | |
| 1001 | return 0; |
| 1002 | } |
| 1003 | |
| 1004 | |
| 1005 | /* |
| 1006 | * Delete a destination (must be already unlinked from the service) |
| 1007 | */ |
Hans Schillstrom | 29c2026 | 2011-01-03 14:44:54 +0100 | [diff] [blame] | 1008 | static void __ip_vs_del_dest(struct net *net, struct ip_vs_dest *dest) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1009 | { |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1010 | struct netns_ipvs *ipvs = net_ipvs(net); |
| 1011 | |
Julian Anastasov | 6ef757f | 2011-03-14 01:44:28 +0200 | [diff] [blame] | 1012 | ip_vs_stop_estimator(net, &dest->stats); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | |
| 1014 | /* |
| 1015 | * Remove it from the d-linked list with the real services. |
| 1016 | */ |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1017 | write_lock_bh(&ipvs->rs_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | ip_vs_rs_unhash(dest); |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1019 | write_unlock_bh(&ipvs->rs_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | |
| 1021 | /* |
| 1022 | * Decrease the refcnt of the dest, and free the dest |
| 1023 | * if nobody refers to it (refcnt=0). Otherwise, throw |
| 1024 | * the destination into the trash. |
| 1025 | */ |
| 1026 | if (atomic_dec_and_test(&dest->refcnt)) { |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 1027 | IP_VS_DBG_BUF(3, "Removing destination %u/%s:%u\n", |
| 1028 | dest->vfwmark, |
| 1029 | IP_VS_DBG_ADDR(dest->af, &dest->addr), |
| 1030 | ntohs(dest->port)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | ip_vs_dst_reset(dest); |
| 1032 | /* simply decrease svc->refcnt here, let the caller check |
| 1033 | and release the service if nobody refers to it. |
| 1034 | Only user context can release destination and service, |
| 1035 | and only one user context can update virtual service at a |
| 1036 | time, so the operation here is OK */ |
| 1037 | atomic_dec(&dest->svc->refcnt); |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 1038 | free_percpu(dest->stats.cpustats); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1039 | kfree(dest); |
| 1040 | } else { |
Julius Volz | cfc78c5 | 2008-09-02 15:55:53 +0200 | [diff] [blame] | 1041 | IP_VS_DBG_BUF(3, "Moving dest %s:%u into trash, " |
| 1042 | "dest->refcnt=%d\n", |
| 1043 | IP_VS_DBG_ADDR(dest->af, &dest->addr), |
| 1044 | ntohs(dest->port), |
| 1045 | atomic_read(&dest->refcnt)); |
Hans Schillstrom | f2431e6 | 2011-01-03 14:45:00 +0100 | [diff] [blame] | 1046 | list_add(&dest->n_list, &ipvs->dest_trash); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1047 | atomic_inc(&dest->refcnt); |
| 1048 | } |
| 1049 | } |
| 1050 | |
| 1051 | |
| 1052 | /* |
| 1053 | * Unlink a destination from the given service |
| 1054 | */ |
| 1055 | static void __ip_vs_unlink_dest(struct ip_vs_service *svc, |
| 1056 | struct ip_vs_dest *dest, |
| 1057 | int svcupd) |
| 1058 | { |
| 1059 | dest->flags &= ~IP_VS_DEST_F_AVAILABLE; |
| 1060 | |
| 1061 | /* |
| 1062 | * Remove it from the d-linked destination list. |
| 1063 | */ |
| 1064 | list_del(&dest->n_list); |
| 1065 | svc->num_dests--; |
Sven Wegener | 82dfb6f | 2008-08-11 19:36:06 +0000 | [diff] [blame] | 1066 | |
| 1067 | /* |
| 1068 | * Call the update_service function of its scheduler |
| 1069 | */ |
| 1070 | if (svcupd && svc->scheduler->update_service) |
| 1071 | svc->scheduler->update_service(svc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | } |
| 1073 | |
| 1074 | |
| 1075 | /* |
| 1076 | * Delete a destination server in the given service |
| 1077 | */ |
| 1078 | static int |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 1079 | ip_vs_del_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | { |
| 1081 | struct ip_vs_dest *dest; |
Al Viro | 014d730 | 2006-09-28 14:29:52 -0700 | [diff] [blame] | 1082 | __be16 dport = udest->port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | |
| 1084 | EnterFunction(2); |
| 1085 | |
Julius Volz | 7937df1 | 2008-09-02 15:55:48 +0200 | [diff] [blame] | 1086 | dest = ip_vs_lookup_dest(svc, &udest->addr, dport); |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 1087 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | if (dest == NULL) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 1089 | IP_VS_DBG(1, "%s(): destination not found!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | return -ENOENT; |
| 1091 | } |
| 1092 | |
| 1093 | write_lock_bh(&__ip_vs_svc_lock); |
| 1094 | |
| 1095 | /* |
| 1096 | * Wait until all other svc users go away. |
| 1097 | */ |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 1098 | IP_VS_WAIT_WHILE(atomic_read(&svc->usecnt) > 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1099 | |
| 1100 | /* |
| 1101 | * Unlink dest from the service |
| 1102 | */ |
| 1103 | __ip_vs_unlink_dest(svc, dest, 1); |
| 1104 | |
| 1105 | write_unlock_bh(&__ip_vs_svc_lock); |
| 1106 | |
| 1107 | /* |
| 1108 | * Delete the destination |
| 1109 | */ |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1110 | __ip_vs_del_dest(svc->net, dest); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | |
| 1112 | LeaveFunction(2); |
| 1113 | |
| 1114 | return 0; |
| 1115 | } |
| 1116 | |
| 1117 | |
| 1118 | /* |
| 1119 | * Add a service into the service hash table |
| 1120 | */ |
| 1121 | static int |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 1122 | ip_vs_add_service(struct net *net, struct ip_vs_service_user_kern *u, |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 1123 | struct ip_vs_service **svc_p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | { |
| 1125 | int ret = 0; |
| 1126 | struct ip_vs_scheduler *sched = NULL; |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 1127 | struct ip_vs_pe *pe = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | struct ip_vs_service *svc = NULL; |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1129 | struct netns_ipvs *ipvs = net_ipvs(net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1130 | |
| 1131 | /* increase the module use count */ |
| 1132 | ip_vs_use_count_inc(); |
| 1133 | |
| 1134 | /* Lookup the scheduler by 'u->sched_name' */ |
| 1135 | sched = ip_vs_scheduler_get(u->sched_name); |
| 1136 | if (sched == NULL) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 1137 | pr_info("Scheduler module ip_vs_%s not found\n", u->sched_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | ret = -ENOENT; |
Simon Horman | 6e08bfb | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 1139 | goto out_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | } |
| 1141 | |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 1142 | if (u->pe_name && *u->pe_name) { |
Simon Horman | e9e5eee | 2010-11-08 20:05:57 +0900 | [diff] [blame] | 1143 | pe = ip_vs_pe_getbyname(u->pe_name); |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 1144 | if (pe == NULL) { |
| 1145 | pr_info("persistence engine module ip_vs_pe_%s " |
| 1146 | "not found\n", u->pe_name); |
| 1147 | ret = -ENOENT; |
| 1148 | goto out_err; |
| 1149 | } |
| 1150 | } |
| 1151 | |
Julius Volz | f94fd04 | 2008-09-02 15:55:55 +0200 | [diff] [blame] | 1152 | #ifdef CONFIG_IP_VS_IPV6 |
Julius Volz | 4814893 | 2008-11-03 17:08:56 -0800 | [diff] [blame] | 1153 | if (u->af == AF_INET6 && (u->netmask < 1 || u->netmask > 128)) { |
| 1154 | ret = -EINVAL; |
| 1155 | goto out_err; |
Julius Volz | f94fd04 | 2008-09-02 15:55:55 +0200 | [diff] [blame] | 1156 | } |
| 1157 | #endif |
| 1158 | |
Simon Horman | dee06e4 | 2010-08-26 02:54:31 +0000 | [diff] [blame] | 1159 | svc = kzalloc(sizeof(struct ip_vs_service), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | if (svc == NULL) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 1161 | IP_VS_DBG(1, "%s(): no memory\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1162 | ret = -ENOMEM; |
| 1163 | goto out_err; |
| 1164 | } |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 1165 | svc->stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats); |
| 1166 | if (!svc->stats.cpustats) { |
| 1167 | pr_err("%s() alloc_percpu failed\n", __func__); |
| 1168 | goto out_err; |
| 1169 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1170 | |
| 1171 | /* I'm the first user of the service */ |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 1172 | atomic_set(&svc->usecnt, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | atomic_set(&svc->refcnt, 0); |
| 1174 | |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 1175 | svc->af = u->af; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1176 | svc->protocol = u->protocol; |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 1177 | ip_vs_addr_copy(svc->af, &svc->addr, &u->addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1178 | svc->port = u->port; |
| 1179 | svc->fwmark = u->fwmark; |
| 1180 | svc->flags = u->flags; |
| 1181 | svc->timeout = u->timeout * HZ; |
| 1182 | svc->netmask = u->netmask; |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 1183 | svc->net = net; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | |
| 1185 | INIT_LIST_HEAD(&svc->destinations); |
| 1186 | rwlock_init(&svc->sched_lock); |
| 1187 | spin_lock_init(&svc->stats.lock); |
| 1188 | |
| 1189 | /* Bind the scheduler */ |
| 1190 | ret = ip_vs_bind_scheduler(svc, sched); |
| 1191 | if (ret) |
| 1192 | goto out_err; |
| 1193 | sched = NULL; |
| 1194 | |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 1195 | /* Bind the ct retriever */ |
| 1196 | ip_vs_bind_pe(svc, pe); |
| 1197 | pe = NULL; |
| 1198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1199 | /* Update the virtual service counters */ |
| 1200 | if (svc->port == FTPPORT) |
Hans Schillstrom | 763f8d0 | 2011-01-03 14:45:01 +0100 | [diff] [blame] | 1201 | atomic_inc(&ipvs->ftpsvc_counter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | else if (svc->port == 0) |
Hans Schillstrom | 763f8d0 | 2011-01-03 14:45:01 +0100 | [diff] [blame] | 1203 | atomic_inc(&ipvs->nullsvc_counter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1204 | |
Julian Anastasov | 6ef757f | 2011-03-14 01:44:28 +0200 | [diff] [blame] | 1205 | ip_vs_start_estimator(net, &svc->stats); |
Julius Volz | f94fd04 | 2008-09-02 15:55:55 +0200 | [diff] [blame] | 1206 | |
| 1207 | /* Count only IPv4 services for old get/setsockopt interface */ |
| 1208 | if (svc->af == AF_INET) |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1209 | ipvs->num_services++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | |
| 1211 | /* Hash the service into the service table */ |
| 1212 | write_lock_bh(&__ip_vs_svc_lock); |
| 1213 | ip_vs_svc_hash(svc); |
| 1214 | write_unlock_bh(&__ip_vs_svc_lock); |
| 1215 | |
| 1216 | *svc_p = svc; |
| 1217 | return 0; |
| 1218 | |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 1219 | |
Simon Horman | 6e08bfb | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 1220 | out_err: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | if (svc != NULL) { |
Simon Horman | 2fabf35 | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 1222 | ip_vs_unbind_scheduler(svc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1223 | if (svc->inc) { |
| 1224 | local_bh_disable(); |
| 1225 | ip_vs_app_inc_put(svc->inc); |
| 1226 | local_bh_enable(); |
| 1227 | } |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 1228 | if (svc->stats.cpustats) |
| 1229 | free_percpu(svc->stats.cpustats); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1230 | kfree(svc); |
| 1231 | } |
| 1232 | ip_vs_scheduler_put(sched); |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 1233 | ip_vs_pe_put(pe); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1234 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1235 | /* decrease the module use count */ |
| 1236 | ip_vs_use_count_dec(); |
| 1237 | |
| 1238 | return ret; |
| 1239 | } |
| 1240 | |
| 1241 | |
| 1242 | /* |
| 1243 | * Edit a service and bind it with a new scheduler |
| 1244 | */ |
| 1245 | static int |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 1246 | ip_vs_edit_service(struct ip_vs_service *svc, struct ip_vs_service_user_kern *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | { |
| 1248 | struct ip_vs_scheduler *sched, *old_sched; |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 1249 | struct ip_vs_pe *pe = NULL, *old_pe = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | int ret = 0; |
| 1251 | |
| 1252 | /* |
| 1253 | * Lookup the scheduler, by 'u->sched_name' |
| 1254 | */ |
| 1255 | sched = ip_vs_scheduler_get(u->sched_name); |
| 1256 | if (sched == NULL) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 1257 | pr_info("Scheduler module ip_vs_%s not found\n", u->sched_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | return -ENOENT; |
| 1259 | } |
| 1260 | old_sched = sched; |
| 1261 | |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 1262 | if (u->pe_name && *u->pe_name) { |
Simon Horman | e9e5eee | 2010-11-08 20:05:57 +0900 | [diff] [blame] | 1263 | pe = ip_vs_pe_getbyname(u->pe_name); |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 1264 | if (pe == NULL) { |
| 1265 | pr_info("persistence engine module ip_vs_pe_%s " |
| 1266 | "not found\n", u->pe_name); |
| 1267 | ret = -ENOENT; |
| 1268 | goto out; |
| 1269 | } |
| 1270 | old_pe = pe; |
| 1271 | } |
| 1272 | |
Julius Volz | f94fd04 | 2008-09-02 15:55:55 +0200 | [diff] [blame] | 1273 | #ifdef CONFIG_IP_VS_IPV6 |
Julius Volz | 4814893 | 2008-11-03 17:08:56 -0800 | [diff] [blame] | 1274 | if (u->af == AF_INET6 && (u->netmask < 1 || u->netmask > 128)) { |
| 1275 | ret = -EINVAL; |
| 1276 | goto out; |
Julius Volz | f94fd04 | 2008-09-02 15:55:55 +0200 | [diff] [blame] | 1277 | } |
| 1278 | #endif |
| 1279 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | write_lock_bh(&__ip_vs_svc_lock); |
| 1281 | |
| 1282 | /* |
| 1283 | * Wait until all other svc users go away. |
| 1284 | */ |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 1285 | IP_VS_WAIT_WHILE(atomic_read(&svc->usecnt) > 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1286 | |
| 1287 | /* |
| 1288 | * Set the flags and timeout value |
| 1289 | */ |
| 1290 | svc->flags = u->flags | IP_VS_SVC_F_HASHED; |
| 1291 | svc->timeout = u->timeout * HZ; |
| 1292 | svc->netmask = u->netmask; |
| 1293 | |
| 1294 | old_sched = svc->scheduler; |
| 1295 | if (sched != old_sched) { |
| 1296 | /* |
| 1297 | * Unbind the old scheduler |
| 1298 | */ |
| 1299 | if ((ret = ip_vs_unbind_scheduler(svc))) { |
| 1300 | old_sched = sched; |
Simon Horman | 9e691ed | 2008-09-17 10:10:41 +1000 | [diff] [blame] | 1301 | goto out_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1302 | } |
| 1303 | |
| 1304 | /* |
| 1305 | * Bind the new scheduler |
| 1306 | */ |
| 1307 | if ((ret = ip_vs_bind_scheduler(svc, sched))) { |
| 1308 | /* |
| 1309 | * If ip_vs_bind_scheduler fails, restore the old |
| 1310 | * scheduler. |
| 1311 | * The main reason of failure is out of memory. |
| 1312 | * |
| 1313 | * The question is if the old scheduler can be |
| 1314 | * restored all the time. TODO: if it cannot be |
| 1315 | * restored some time, we must delete the service, |
| 1316 | * otherwise the system may crash. |
| 1317 | */ |
| 1318 | ip_vs_bind_scheduler(svc, old_sched); |
| 1319 | old_sched = sched; |
Simon Horman | 9e691ed | 2008-09-17 10:10:41 +1000 | [diff] [blame] | 1320 | goto out_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1321 | } |
| 1322 | } |
| 1323 | |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 1324 | old_pe = svc->pe; |
| 1325 | if (pe != old_pe) { |
| 1326 | ip_vs_unbind_pe(svc); |
| 1327 | ip_vs_bind_pe(svc, pe); |
| 1328 | } |
| 1329 | |
Simon Horman | 9e691ed | 2008-09-17 10:10:41 +1000 | [diff] [blame] | 1330 | out_unlock: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | write_unlock_bh(&__ip_vs_svc_lock); |
Simon Horman | 9e691ed | 2008-09-17 10:10:41 +1000 | [diff] [blame] | 1332 | out: |
Simon Horman | 6e08bfb | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 1333 | ip_vs_scheduler_put(old_sched); |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 1334 | ip_vs_pe_put(old_pe); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1335 | return ret; |
| 1336 | } |
| 1337 | |
| 1338 | |
| 1339 | /* |
| 1340 | * Delete a service from the service list |
| 1341 | * - The service must be unlinked, unlocked and not referenced! |
| 1342 | * - We are called under _bh lock |
| 1343 | */ |
| 1344 | static void __ip_vs_del_service(struct ip_vs_service *svc) |
| 1345 | { |
| 1346 | struct ip_vs_dest *dest, *nxt; |
| 1347 | struct ip_vs_scheduler *old_sched; |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 1348 | struct ip_vs_pe *old_pe; |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1349 | struct netns_ipvs *ipvs = net_ipvs(svc->net); |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 1350 | |
| 1351 | pr_info("%s: enter\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1352 | |
Julius Volz | f94fd04 | 2008-09-02 15:55:55 +0200 | [diff] [blame] | 1353 | /* Count only IPv4 services for old get/setsockopt interface */ |
| 1354 | if (svc->af == AF_INET) |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1355 | ipvs->num_services--; |
Julius Volz | f94fd04 | 2008-09-02 15:55:55 +0200 | [diff] [blame] | 1356 | |
Julian Anastasov | 6ef757f | 2011-03-14 01:44:28 +0200 | [diff] [blame] | 1357 | ip_vs_stop_estimator(svc->net, &svc->stats); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1358 | |
| 1359 | /* Unbind scheduler */ |
| 1360 | old_sched = svc->scheduler; |
| 1361 | ip_vs_unbind_scheduler(svc); |
Simon Horman | 6e08bfb | 2010-08-22 21:37:52 +0900 | [diff] [blame] | 1362 | ip_vs_scheduler_put(old_sched); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 1364 | /* Unbind persistence engine */ |
| 1365 | old_pe = svc->pe; |
| 1366 | ip_vs_unbind_pe(svc); |
| 1367 | ip_vs_pe_put(old_pe); |
| 1368 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1369 | /* Unbind app inc */ |
| 1370 | if (svc->inc) { |
| 1371 | ip_vs_app_inc_put(svc->inc); |
| 1372 | svc->inc = NULL; |
| 1373 | } |
| 1374 | |
| 1375 | /* |
| 1376 | * Unlink the whole destination list |
| 1377 | */ |
| 1378 | list_for_each_entry_safe(dest, nxt, &svc->destinations, n_list) { |
| 1379 | __ip_vs_unlink_dest(svc, dest, 0); |
Hans Schillstrom | 29c2026 | 2011-01-03 14:44:54 +0100 | [diff] [blame] | 1380 | __ip_vs_del_dest(svc->net, dest); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1381 | } |
| 1382 | |
| 1383 | /* |
| 1384 | * Update the virtual service counters |
| 1385 | */ |
| 1386 | if (svc->port == FTPPORT) |
Hans Schillstrom | 763f8d0 | 2011-01-03 14:45:01 +0100 | [diff] [blame] | 1387 | atomic_dec(&ipvs->ftpsvc_counter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1388 | else if (svc->port == 0) |
Hans Schillstrom | 763f8d0 | 2011-01-03 14:45:01 +0100 | [diff] [blame] | 1389 | atomic_dec(&ipvs->nullsvc_counter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | |
| 1391 | /* |
| 1392 | * Free the service if nobody refers to it |
| 1393 | */ |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 1394 | if (atomic_read(&svc->refcnt) == 0) { |
| 1395 | IP_VS_DBG_BUF(3, "Removing service %u/%s:%u usecnt=%d\n", |
| 1396 | svc->fwmark, |
| 1397 | IP_VS_DBG_ADDR(svc->af, &svc->addr), |
| 1398 | ntohs(svc->port), atomic_read(&svc->usecnt)); |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 1399 | free_percpu(svc->stats.cpustats); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1400 | kfree(svc); |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 1401 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1402 | |
| 1403 | /* decrease the module use count */ |
| 1404 | ip_vs_use_count_dec(); |
| 1405 | } |
| 1406 | |
| 1407 | /* |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 1408 | * Unlink a service from list and try to delete it if its refcnt reached 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1409 | */ |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 1410 | static void ip_vs_unlink_service(struct ip_vs_service *svc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | /* |
| 1413 | * Unhash it from the service table |
| 1414 | */ |
| 1415 | write_lock_bh(&__ip_vs_svc_lock); |
| 1416 | |
| 1417 | ip_vs_svc_unhash(svc); |
| 1418 | |
| 1419 | /* |
| 1420 | * Wait until all the svc users go away. |
| 1421 | */ |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 1422 | IP_VS_WAIT_WHILE(atomic_read(&svc->usecnt) > 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | |
| 1424 | __ip_vs_del_service(svc); |
| 1425 | |
| 1426 | write_unlock_bh(&__ip_vs_svc_lock); |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 1427 | } |
| 1428 | |
| 1429 | /* |
| 1430 | * Delete a service from the service list |
| 1431 | */ |
| 1432 | static int ip_vs_del_service(struct ip_vs_service *svc) |
| 1433 | { |
| 1434 | if (svc == NULL) |
| 1435 | return -EEXIST; |
| 1436 | ip_vs_unlink_service(svc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1437 | |
| 1438 | return 0; |
| 1439 | } |
| 1440 | |
| 1441 | |
| 1442 | /* |
| 1443 | * Flush all the virtual services |
| 1444 | */ |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 1445 | static int ip_vs_flush(struct net *net) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1446 | { |
| 1447 | int idx; |
| 1448 | struct ip_vs_service *svc, *nxt; |
| 1449 | |
| 1450 | /* |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 1451 | * Flush the service table hashed by <netns,protocol,addr,port> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1452 | */ |
| 1453 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 1454 | list_for_each_entry_safe(svc, nxt, &ip_vs_svc_table[idx], |
| 1455 | s_list) { |
| 1456 | if (net_eq(svc->net, net)) |
| 1457 | ip_vs_unlink_service(svc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | } |
| 1459 | } |
| 1460 | |
| 1461 | /* |
| 1462 | * Flush the service table hashed by fwmark |
| 1463 | */ |
| 1464 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { |
| 1465 | list_for_each_entry_safe(svc, nxt, |
| 1466 | &ip_vs_svc_fwm_table[idx], f_list) { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 1467 | if (net_eq(svc->net, net)) |
| 1468 | ip_vs_unlink_service(svc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | } |
| 1470 | } |
| 1471 | |
| 1472 | return 0; |
| 1473 | } |
| 1474 | |
| 1475 | |
| 1476 | /* |
| 1477 | * Zero counters in a service or all services |
| 1478 | */ |
| 1479 | static int ip_vs_zero_service(struct ip_vs_service *svc) |
| 1480 | { |
| 1481 | struct ip_vs_dest *dest; |
| 1482 | |
| 1483 | write_lock_bh(&__ip_vs_svc_lock); |
| 1484 | list_for_each_entry(dest, &svc->destinations, n_list) { |
| 1485 | ip_vs_zero_stats(&dest->stats); |
| 1486 | } |
| 1487 | ip_vs_zero_stats(&svc->stats); |
| 1488 | write_unlock_bh(&__ip_vs_svc_lock); |
| 1489 | return 0; |
| 1490 | } |
| 1491 | |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 1492 | static int ip_vs_zero_all(struct net *net) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | { |
| 1494 | int idx; |
| 1495 | struct ip_vs_service *svc; |
| 1496 | |
| 1497 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { |
| 1498 | list_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 1499 | if (net_eq(svc->net, net)) |
| 1500 | ip_vs_zero_service(svc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1501 | } |
| 1502 | } |
| 1503 | |
| 1504 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { |
| 1505 | list_for_each_entry(svc, &ip_vs_svc_fwm_table[idx], f_list) { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 1506 | if (net_eq(svc->net, net)) |
| 1507 | ip_vs_zero_service(svc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1508 | } |
| 1509 | } |
| 1510 | |
Julian Anastasov | 2a0751a | 2011-03-04 12:20:35 +0200 | [diff] [blame] | 1511 | ip_vs_zero_stats(&net_ipvs(net)->tot_stats); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1512 | return 0; |
| 1513 | } |
| 1514 | |
Simon Horman | 14e4054 | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 1515 | #ifdef CONFIG_SYSCTL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1516 | static int |
Alexey Dobriyan | 8d65af7 | 2009-09-23 15:57:19 -0700 | [diff] [blame] | 1517 | proc_do_defense_mode(ctl_table *table, int write, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1518 | void __user *buffer, size_t *lenp, loff_t *ppos) |
| 1519 | { |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 1520 | struct net *net = current->nsproxy->net_ns; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1521 | int *valp = table->data; |
| 1522 | int val = *valp; |
| 1523 | int rc; |
| 1524 | |
Alexey Dobriyan | 8d65af7 | 2009-09-23 15:57:19 -0700 | [diff] [blame] | 1525 | rc = proc_dointvec(table, write, buffer, lenp, ppos); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1526 | if (write && (*valp != val)) { |
| 1527 | if ((*valp < 0) || (*valp > 3)) { |
| 1528 | /* Restore the correct value */ |
| 1529 | *valp = val; |
| 1530 | } else { |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 1531 | update_defense_level(net_ipvs(net)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1532 | } |
| 1533 | } |
| 1534 | return rc; |
| 1535 | } |
| 1536 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1537 | static int |
Alexey Dobriyan | 8d65af7 | 2009-09-23 15:57:19 -0700 | [diff] [blame] | 1538 | proc_do_sync_threshold(ctl_table *table, int write, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1539 | void __user *buffer, size_t *lenp, loff_t *ppos) |
| 1540 | { |
| 1541 | int *valp = table->data; |
| 1542 | int val[2]; |
| 1543 | int rc; |
| 1544 | |
| 1545 | /* backup the value first */ |
| 1546 | memcpy(val, valp, sizeof(val)); |
| 1547 | |
Alexey Dobriyan | 8d65af7 | 2009-09-23 15:57:19 -0700 | [diff] [blame] | 1548 | rc = proc_dointvec(table, write, buffer, lenp, ppos); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1549 | if (write && (valp[0] < 0 || valp[1] < 0 || valp[0] >= valp[1])) { |
| 1550 | /* Restore the correct value */ |
| 1551 | memcpy(valp, val, sizeof(val)); |
| 1552 | } |
| 1553 | return rc; |
| 1554 | } |
| 1555 | |
Hans Schillstrom | b880c1f | 2010-11-19 14:25:14 +0100 | [diff] [blame] | 1556 | static int |
| 1557 | proc_do_sync_mode(ctl_table *table, int write, |
| 1558 | void __user *buffer, size_t *lenp, loff_t *ppos) |
| 1559 | { |
| 1560 | int *valp = table->data; |
| 1561 | int val = *valp; |
| 1562 | int rc; |
| 1563 | |
| 1564 | rc = proc_dointvec(table, write, buffer, lenp, ppos); |
| 1565 | if (write && (*valp != val)) { |
| 1566 | if ((*valp < 0) || (*valp > 1)) { |
| 1567 | /* Restore the correct value */ |
| 1568 | *valp = val; |
| 1569 | } else { |
Hans Schillstrom | f131315 | 2011-01-03 14:44:55 +0100 | [diff] [blame] | 1570 | struct net *net = current->nsproxy->net_ns; |
| 1571 | ip_vs_sync_switch_mode(net, val); |
Hans Schillstrom | b880c1f | 2010-11-19 14:25:14 +0100 | [diff] [blame] | 1572 | } |
| 1573 | } |
| 1574 | return rc; |
| 1575 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1576 | |
| 1577 | /* |
| 1578 | * IPVS sysctl table (under the /proc/sys/net/ipv4/vs/) |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1579 | * Do not change order or insert new entries without |
| 1580 | * align with netns init in __ip_vs_control_init() |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1581 | */ |
| 1582 | |
| 1583 | static struct ctl_table vs_vars[] = { |
| 1584 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1585 | .procname = "amemthresh", |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 1586 | .maxlen = sizeof(int), |
| 1587 | .mode = 0644, |
| 1588 | .proc_handler = proc_dointvec, |
| 1589 | }, |
| 1590 | { |
| 1591 | .procname = "am_droprate", |
| 1592 | .maxlen = sizeof(int), |
| 1593 | .mode = 0644, |
| 1594 | .proc_handler = proc_dointvec, |
| 1595 | }, |
| 1596 | { |
| 1597 | .procname = "drop_entry", |
| 1598 | .maxlen = sizeof(int), |
| 1599 | .mode = 0644, |
| 1600 | .proc_handler = proc_do_defense_mode, |
| 1601 | }, |
| 1602 | { |
| 1603 | .procname = "drop_packet", |
| 1604 | .maxlen = sizeof(int), |
| 1605 | .mode = 0644, |
| 1606 | .proc_handler = proc_do_defense_mode, |
| 1607 | }, |
| 1608 | #ifdef CONFIG_IP_VS_NFCT |
| 1609 | { |
| 1610 | .procname = "conntrack", |
| 1611 | .maxlen = sizeof(int), |
| 1612 | .mode = 0644, |
| 1613 | .proc_handler = &proc_dointvec, |
| 1614 | }, |
| 1615 | #endif |
| 1616 | { |
| 1617 | .procname = "secure_tcp", |
| 1618 | .maxlen = sizeof(int), |
| 1619 | .mode = 0644, |
| 1620 | .proc_handler = proc_do_defense_mode, |
| 1621 | }, |
| 1622 | { |
| 1623 | .procname = "snat_reroute", |
| 1624 | .maxlen = sizeof(int), |
| 1625 | .mode = 0644, |
| 1626 | .proc_handler = &proc_dointvec, |
| 1627 | }, |
| 1628 | { |
| 1629 | .procname = "sync_version", |
| 1630 | .maxlen = sizeof(int), |
| 1631 | .mode = 0644, |
| 1632 | .proc_handler = &proc_do_sync_mode, |
| 1633 | }, |
| 1634 | { |
| 1635 | .procname = "cache_bypass", |
| 1636 | .maxlen = sizeof(int), |
| 1637 | .mode = 0644, |
| 1638 | .proc_handler = proc_dointvec, |
| 1639 | }, |
| 1640 | { |
| 1641 | .procname = "expire_nodest_conn", |
| 1642 | .maxlen = sizeof(int), |
| 1643 | .mode = 0644, |
| 1644 | .proc_handler = proc_dointvec, |
| 1645 | }, |
| 1646 | { |
| 1647 | .procname = "expire_quiescent_template", |
| 1648 | .maxlen = sizeof(int), |
| 1649 | .mode = 0644, |
| 1650 | .proc_handler = proc_dointvec, |
| 1651 | }, |
| 1652 | { |
| 1653 | .procname = "sync_threshold", |
| 1654 | .maxlen = |
| 1655 | sizeof(((struct netns_ipvs *)0)->sysctl_sync_threshold), |
| 1656 | .mode = 0644, |
| 1657 | .proc_handler = proc_do_sync_threshold, |
| 1658 | }, |
| 1659 | { |
| 1660 | .procname = "nat_icmp_send", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1661 | .maxlen = sizeof(int), |
| 1662 | .mode = 0644, |
Alexey Dobriyan | 6d9f239 | 2008-11-03 18:21:05 -0800 | [diff] [blame] | 1663 | .proc_handler = proc_dointvec, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1664 | }, |
| 1665 | #ifdef CONFIG_IP_VS_DEBUG |
| 1666 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1667 | .procname = "debug_level", |
| 1668 | .data = &sysctl_ip_vs_debug_level, |
| 1669 | .maxlen = sizeof(int), |
| 1670 | .mode = 0644, |
Alexey Dobriyan | 6d9f239 | 2008-11-03 18:21:05 -0800 | [diff] [blame] | 1671 | .proc_handler = proc_dointvec, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1672 | }, |
| 1673 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1674 | #if 0 |
| 1675 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1676 | .procname = "timeout_established", |
| 1677 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_ESTABLISHED], |
| 1678 | .maxlen = sizeof(int), |
| 1679 | .mode = 0644, |
Alexey Dobriyan | 6d9f239 | 2008-11-03 18:21:05 -0800 | [diff] [blame] | 1680 | .proc_handler = proc_dointvec_jiffies, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1681 | }, |
| 1682 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1683 | .procname = "timeout_synsent", |
| 1684 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_SYN_SENT], |
| 1685 | .maxlen = sizeof(int), |
| 1686 | .mode = 0644, |
Alexey Dobriyan | 6d9f239 | 2008-11-03 18:21:05 -0800 | [diff] [blame] | 1687 | .proc_handler = proc_dointvec_jiffies, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1688 | }, |
| 1689 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1690 | .procname = "timeout_synrecv", |
| 1691 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_SYN_RECV], |
| 1692 | .maxlen = sizeof(int), |
| 1693 | .mode = 0644, |
Alexey Dobriyan | 6d9f239 | 2008-11-03 18:21:05 -0800 | [diff] [blame] | 1694 | .proc_handler = proc_dointvec_jiffies, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1695 | }, |
| 1696 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1697 | .procname = "timeout_finwait", |
| 1698 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_FIN_WAIT], |
| 1699 | .maxlen = sizeof(int), |
| 1700 | .mode = 0644, |
Alexey Dobriyan | 6d9f239 | 2008-11-03 18:21:05 -0800 | [diff] [blame] | 1701 | .proc_handler = proc_dointvec_jiffies, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1702 | }, |
| 1703 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1704 | .procname = "timeout_timewait", |
| 1705 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_TIME_WAIT], |
| 1706 | .maxlen = sizeof(int), |
| 1707 | .mode = 0644, |
Alexey Dobriyan | 6d9f239 | 2008-11-03 18:21:05 -0800 | [diff] [blame] | 1708 | .proc_handler = proc_dointvec_jiffies, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1709 | }, |
| 1710 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1711 | .procname = "timeout_close", |
| 1712 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_CLOSE], |
| 1713 | .maxlen = sizeof(int), |
| 1714 | .mode = 0644, |
Alexey Dobriyan | 6d9f239 | 2008-11-03 18:21:05 -0800 | [diff] [blame] | 1715 | .proc_handler = proc_dointvec_jiffies, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1716 | }, |
| 1717 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1718 | .procname = "timeout_closewait", |
| 1719 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_CLOSE_WAIT], |
| 1720 | .maxlen = sizeof(int), |
| 1721 | .mode = 0644, |
Alexey Dobriyan | 6d9f239 | 2008-11-03 18:21:05 -0800 | [diff] [blame] | 1722 | .proc_handler = proc_dointvec_jiffies, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1723 | }, |
| 1724 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1725 | .procname = "timeout_lastack", |
| 1726 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_LAST_ACK], |
| 1727 | .maxlen = sizeof(int), |
| 1728 | .mode = 0644, |
Alexey Dobriyan | 6d9f239 | 2008-11-03 18:21:05 -0800 | [diff] [blame] | 1729 | .proc_handler = proc_dointvec_jiffies, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1730 | }, |
| 1731 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1732 | .procname = "timeout_listen", |
| 1733 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_LISTEN], |
| 1734 | .maxlen = sizeof(int), |
| 1735 | .mode = 0644, |
Alexey Dobriyan | 6d9f239 | 2008-11-03 18:21:05 -0800 | [diff] [blame] | 1736 | .proc_handler = proc_dointvec_jiffies, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1737 | }, |
| 1738 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1739 | .procname = "timeout_synack", |
| 1740 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_SYNACK], |
| 1741 | .maxlen = sizeof(int), |
| 1742 | .mode = 0644, |
Alexey Dobriyan | 6d9f239 | 2008-11-03 18:21:05 -0800 | [diff] [blame] | 1743 | .proc_handler = proc_dointvec_jiffies, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1744 | }, |
| 1745 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1746 | .procname = "timeout_udp", |
| 1747 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_UDP], |
| 1748 | .maxlen = sizeof(int), |
| 1749 | .mode = 0644, |
Alexey Dobriyan | 6d9f239 | 2008-11-03 18:21:05 -0800 | [diff] [blame] | 1750 | .proc_handler = proc_dointvec_jiffies, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1751 | }, |
| 1752 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1753 | .procname = "timeout_icmp", |
| 1754 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_ICMP], |
| 1755 | .maxlen = sizeof(int), |
| 1756 | .mode = 0644, |
Alexey Dobriyan | 6d9f239 | 2008-11-03 18:21:05 -0800 | [diff] [blame] | 1757 | .proc_handler = proc_dointvec_jiffies, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1758 | }, |
| 1759 | #endif |
Eric W. Biederman | f8572d8 | 2009-11-05 13:32:03 -0800 | [diff] [blame] | 1760 | { } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1761 | }; |
| 1762 | |
Sven Wegener | 5587da5 | 2008-08-10 18:24:40 +0000 | [diff] [blame] | 1763 | const struct ctl_path net_vs_ctl_path[] = { |
Eric W. Biederman | f8572d8 | 2009-11-05 13:32:03 -0800 | [diff] [blame] | 1764 | { .procname = "net", }, |
| 1765 | { .procname = "ipv4", }, |
Pavel Emelyanov | 90754f8 | 2008-01-12 02:33:50 -0800 | [diff] [blame] | 1766 | { .procname = "vs", }, |
| 1767 | { } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1768 | }; |
Pavel Emelyanov | 90754f8 | 2008-01-12 02:33:50 -0800 | [diff] [blame] | 1769 | EXPORT_SYMBOL_GPL(net_vs_ctl_path); |
Simon Horman | 14e4054 | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 1770 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1771 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1772 | #ifdef CONFIG_PROC_FS |
| 1773 | |
| 1774 | struct ip_vs_iter { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 1775 | struct seq_net_private p; /* Do not move this, netns depends upon it*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1776 | struct list_head *table; |
| 1777 | int bucket; |
| 1778 | }; |
| 1779 | |
| 1780 | /* |
| 1781 | * Write the contents of the VS rule table to a PROCfs file. |
| 1782 | * (It is kept just for backward compatibility) |
| 1783 | */ |
| 1784 | static inline const char *ip_vs_fwd_name(unsigned flags) |
| 1785 | { |
| 1786 | switch (flags & IP_VS_CONN_F_FWD_MASK) { |
| 1787 | case IP_VS_CONN_F_LOCALNODE: |
| 1788 | return "Local"; |
| 1789 | case IP_VS_CONN_F_TUNNEL: |
| 1790 | return "Tunnel"; |
| 1791 | case IP_VS_CONN_F_DROUTE: |
| 1792 | return "Route"; |
| 1793 | default: |
| 1794 | return "Masq"; |
| 1795 | } |
| 1796 | } |
| 1797 | |
| 1798 | |
| 1799 | /* Get the Nth entry in the two lists */ |
| 1800 | static struct ip_vs_service *ip_vs_info_array(struct seq_file *seq, loff_t pos) |
| 1801 | { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 1802 | struct net *net = seq_file_net(seq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1803 | struct ip_vs_iter *iter = seq->private; |
| 1804 | int idx; |
| 1805 | struct ip_vs_service *svc; |
| 1806 | |
| 1807 | /* look in hash by protocol */ |
| 1808 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { |
| 1809 | list_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 1810 | if (net_eq(svc->net, net) && pos-- == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1811 | iter->table = ip_vs_svc_table; |
| 1812 | iter->bucket = idx; |
| 1813 | return svc; |
| 1814 | } |
| 1815 | } |
| 1816 | } |
| 1817 | |
| 1818 | /* keep looking in fwmark */ |
| 1819 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { |
| 1820 | list_for_each_entry(svc, &ip_vs_svc_fwm_table[idx], f_list) { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 1821 | if (net_eq(svc->net, net) && pos-- == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1822 | iter->table = ip_vs_svc_fwm_table; |
| 1823 | iter->bucket = idx; |
| 1824 | return svc; |
| 1825 | } |
| 1826 | } |
| 1827 | } |
| 1828 | |
| 1829 | return NULL; |
| 1830 | } |
| 1831 | |
| 1832 | static void *ip_vs_info_seq_start(struct seq_file *seq, loff_t *pos) |
Simon Horman | 563e94f | 2008-09-17 10:10:42 +1000 | [diff] [blame] | 1833 | __acquires(__ip_vs_svc_lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1834 | { |
| 1835 | |
| 1836 | read_lock_bh(&__ip_vs_svc_lock); |
| 1837 | return *pos ? ip_vs_info_array(seq, *pos - 1) : SEQ_START_TOKEN; |
| 1838 | } |
| 1839 | |
| 1840 | |
| 1841 | static void *ip_vs_info_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
| 1842 | { |
| 1843 | struct list_head *e; |
| 1844 | struct ip_vs_iter *iter; |
| 1845 | struct ip_vs_service *svc; |
| 1846 | |
| 1847 | ++*pos; |
| 1848 | if (v == SEQ_START_TOKEN) |
| 1849 | return ip_vs_info_array(seq,0); |
| 1850 | |
| 1851 | svc = v; |
| 1852 | iter = seq->private; |
| 1853 | |
| 1854 | if (iter->table == ip_vs_svc_table) { |
| 1855 | /* next service in table hashed by protocol */ |
| 1856 | if ((e = svc->s_list.next) != &ip_vs_svc_table[iter->bucket]) |
| 1857 | return list_entry(e, struct ip_vs_service, s_list); |
| 1858 | |
| 1859 | |
| 1860 | while (++iter->bucket < IP_VS_SVC_TAB_SIZE) { |
| 1861 | list_for_each_entry(svc,&ip_vs_svc_table[iter->bucket], |
| 1862 | s_list) { |
| 1863 | return svc; |
| 1864 | } |
| 1865 | } |
| 1866 | |
| 1867 | iter->table = ip_vs_svc_fwm_table; |
| 1868 | iter->bucket = -1; |
| 1869 | goto scan_fwmark; |
| 1870 | } |
| 1871 | |
| 1872 | /* next service in hashed by fwmark */ |
| 1873 | if ((e = svc->f_list.next) != &ip_vs_svc_fwm_table[iter->bucket]) |
| 1874 | return list_entry(e, struct ip_vs_service, f_list); |
| 1875 | |
| 1876 | scan_fwmark: |
| 1877 | while (++iter->bucket < IP_VS_SVC_TAB_SIZE) { |
| 1878 | list_for_each_entry(svc, &ip_vs_svc_fwm_table[iter->bucket], |
| 1879 | f_list) |
| 1880 | return svc; |
| 1881 | } |
| 1882 | |
| 1883 | return NULL; |
| 1884 | } |
| 1885 | |
| 1886 | static void ip_vs_info_seq_stop(struct seq_file *seq, void *v) |
Simon Horman | 563e94f | 2008-09-17 10:10:42 +1000 | [diff] [blame] | 1887 | __releases(__ip_vs_svc_lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1888 | { |
| 1889 | read_unlock_bh(&__ip_vs_svc_lock); |
| 1890 | } |
| 1891 | |
| 1892 | |
| 1893 | static int ip_vs_info_seq_show(struct seq_file *seq, void *v) |
| 1894 | { |
| 1895 | if (v == SEQ_START_TOKEN) { |
| 1896 | seq_printf(seq, |
| 1897 | "IP Virtual Server version %d.%d.%d (size=%d)\n", |
Catalin(ux) M. BOIE | 6f7edb4 | 2010-01-05 05:50:24 +0100 | [diff] [blame] | 1898 | NVERSION(IP_VS_VERSION_CODE), ip_vs_conn_tab_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1899 | seq_puts(seq, |
| 1900 | "Prot LocalAddress:Port Scheduler Flags\n"); |
| 1901 | seq_puts(seq, |
| 1902 | " -> RemoteAddress:Port Forward Weight ActiveConn InActConn\n"); |
| 1903 | } else { |
| 1904 | const struct ip_vs_service *svc = v; |
| 1905 | const struct ip_vs_iter *iter = seq->private; |
| 1906 | const struct ip_vs_dest *dest; |
| 1907 | |
Vince Busam | 667a5f1 | 2008-09-02 15:55:49 +0200 | [diff] [blame] | 1908 | if (iter->table == ip_vs_svc_table) { |
| 1909 | #ifdef CONFIG_IP_VS_IPV6 |
| 1910 | if (svc->af == AF_INET6) |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame] | 1911 | seq_printf(seq, "%s [%pI6]:%04X %s ", |
Vince Busam | 667a5f1 | 2008-09-02 15:55:49 +0200 | [diff] [blame] | 1912 | ip_vs_proto_name(svc->protocol), |
Harvey Harrison | 38ff4fa | 2008-10-28 16:08:13 -0700 | [diff] [blame] | 1913 | &svc->addr.in6, |
Vince Busam | 667a5f1 | 2008-09-02 15:55:49 +0200 | [diff] [blame] | 1914 | ntohs(svc->port), |
| 1915 | svc->scheduler->name); |
| 1916 | else |
| 1917 | #endif |
Nick Chalk | 26ec037 | 2010-06-22 08:07:01 +0200 | [diff] [blame] | 1918 | seq_printf(seq, "%s %08X:%04X %s %s ", |
Vince Busam | 667a5f1 | 2008-09-02 15:55:49 +0200 | [diff] [blame] | 1919 | ip_vs_proto_name(svc->protocol), |
| 1920 | ntohl(svc->addr.ip), |
| 1921 | ntohs(svc->port), |
Nick Chalk | 26ec037 | 2010-06-22 08:07:01 +0200 | [diff] [blame] | 1922 | svc->scheduler->name, |
| 1923 | (svc->flags & IP_VS_SVC_F_ONEPACKET)?"ops ":""); |
Vince Busam | 667a5f1 | 2008-09-02 15:55:49 +0200 | [diff] [blame] | 1924 | } else { |
Nick Chalk | 26ec037 | 2010-06-22 08:07:01 +0200 | [diff] [blame] | 1925 | seq_printf(seq, "FWM %08X %s %s", |
| 1926 | svc->fwmark, svc->scheduler->name, |
| 1927 | (svc->flags & IP_VS_SVC_F_ONEPACKET)?"ops ":""); |
Vince Busam | 667a5f1 | 2008-09-02 15:55:49 +0200 | [diff] [blame] | 1928 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1929 | |
| 1930 | if (svc->flags & IP_VS_SVC_F_PERSISTENT) |
| 1931 | seq_printf(seq, "persistent %d %08X\n", |
| 1932 | svc->timeout, |
| 1933 | ntohl(svc->netmask)); |
| 1934 | else |
| 1935 | seq_putc(seq, '\n'); |
| 1936 | |
| 1937 | list_for_each_entry(dest, &svc->destinations, n_list) { |
Vince Busam | 667a5f1 | 2008-09-02 15:55:49 +0200 | [diff] [blame] | 1938 | #ifdef CONFIG_IP_VS_IPV6 |
| 1939 | if (dest->af == AF_INET6) |
| 1940 | seq_printf(seq, |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame] | 1941 | " -> [%pI6]:%04X" |
Vince Busam | 667a5f1 | 2008-09-02 15:55:49 +0200 | [diff] [blame] | 1942 | " %-7s %-6d %-10d %-10d\n", |
Harvey Harrison | 38ff4fa | 2008-10-28 16:08:13 -0700 | [diff] [blame] | 1943 | &dest->addr.in6, |
Vince Busam | 667a5f1 | 2008-09-02 15:55:49 +0200 | [diff] [blame] | 1944 | ntohs(dest->port), |
| 1945 | ip_vs_fwd_name(atomic_read(&dest->conn_flags)), |
| 1946 | atomic_read(&dest->weight), |
| 1947 | atomic_read(&dest->activeconns), |
| 1948 | atomic_read(&dest->inactconns)); |
| 1949 | else |
| 1950 | #endif |
| 1951 | seq_printf(seq, |
| 1952 | " -> %08X:%04X " |
| 1953 | "%-7s %-6d %-10d %-10d\n", |
| 1954 | ntohl(dest->addr.ip), |
| 1955 | ntohs(dest->port), |
| 1956 | ip_vs_fwd_name(atomic_read(&dest->conn_flags)), |
| 1957 | atomic_read(&dest->weight), |
| 1958 | atomic_read(&dest->activeconns), |
| 1959 | atomic_read(&dest->inactconns)); |
| 1960 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1961 | } |
| 1962 | } |
| 1963 | return 0; |
| 1964 | } |
| 1965 | |
Philippe De Muyter | 56b3d97 | 2007-07-10 23:07:31 -0700 | [diff] [blame] | 1966 | static const struct seq_operations ip_vs_info_seq_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | .start = ip_vs_info_seq_start, |
| 1968 | .next = ip_vs_info_seq_next, |
| 1969 | .stop = ip_vs_info_seq_stop, |
| 1970 | .show = ip_vs_info_seq_show, |
| 1971 | }; |
| 1972 | |
| 1973 | static int ip_vs_info_open(struct inode *inode, struct file *file) |
| 1974 | { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 1975 | return seq_open_net(inode, file, &ip_vs_info_seq_ops, |
Pavel Emelyanov | cf7732e | 2007-10-10 02:29:29 -0700 | [diff] [blame] | 1976 | sizeof(struct ip_vs_iter)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1977 | } |
| 1978 | |
Arjan van de Ven | 9a32144 | 2007-02-12 00:55:35 -0800 | [diff] [blame] | 1979 | static const struct file_operations ip_vs_info_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1980 | .owner = THIS_MODULE, |
| 1981 | .open = ip_vs_info_open, |
| 1982 | .read = seq_read, |
| 1983 | .llseek = seq_lseek, |
| 1984 | .release = seq_release_private, |
| 1985 | }; |
| 1986 | |
| 1987 | #endif |
| 1988 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1989 | #ifdef CONFIG_PROC_FS |
| 1990 | static int ip_vs_stats_show(struct seq_file *seq, void *v) |
| 1991 | { |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 1992 | struct net *net = seq_file_single_net(seq); |
Julian Anastasov | 55a3d4e | 2011-03-14 01:37:49 +0200 | [diff] [blame] | 1993 | struct ip_vs_stats_user show; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1994 | |
| 1995 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ |
| 1996 | seq_puts(seq, |
| 1997 | " Total Incoming Outgoing Incoming Outgoing\n"); |
| 1998 | seq_printf(seq, |
| 1999 | " Conns Packets Packets Bytes Bytes\n"); |
| 2000 | |
Julian Anastasov | 55a3d4e | 2011-03-14 01:37:49 +0200 | [diff] [blame] | 2001 | ip_vs_copy_stats(&show, &net_ipvs(net)->tot_stats); |
| 2002 | seq_printf(seq, "%8X %8X %8X %16LX %16LX\n\n", show.conns, |
| 2003 | show.inpkts, show.outpkts, |
| 2004 | (unsigned long long) show.inbytes, |
| 2005 | (unsigned long long) show.outbytes); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2006 | |
| 2007 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ |
| 2008 | seq_puts(seq, |
| 2009 | " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n"); |
Julian Anastasov | 55a3d4e | 2011-03-14 01:37:49 +0200 | [diff] [blame] | 2010 | seq_printf(seq, "%8X %8X %8X %16X %16X\n", |
| 2011 | show.cps, show.inpps, show.outpps, |
| 2012 | show.inbps, show.outbps); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2013 | |
| 2014 | return 0; |
| 2015 | } |
| 2016 | |
| 2017 | static int ip_vs_stats_seq_open(struct inode *inode, struct file *file) |
| 2018 | { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2019 | return single_open_net(inode, file, ip_vs_stats_show); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2020 | } |
| 2021 | |
Arjan van de Ven | 9a32144 | 2007-02-12 00:55:35 -0800 | [diff] [blame] | 2022 | static const struct file_operations ip_vs_stats_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2023 | .owner = THIS_MODULE, |
| 2024 | .open = ip_vs_stats_seq_open, |
| 2025 | .read = seq_read, |
| 2026 | .llseek = seq_lseek, |
| 2027 | .release = single_release, |
| 2028 | }; |
| 2029 | |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 2030 | static int ip_vs_stats_percpu_show(struct seq_file *seq, void *v) |
| 2031 | { |
| 2032 | struct net *net = seq_file_single_net(seq); |
Julian Anastasov | 2a0751a | 2011-03-04 12:20:35 +0200 | [diff] [blame] | 2033 | struct ip_vs_stats *tot_stats = &net_ipvs(net)->tot_stats; |
| 2034 | struct ip_vs_cpu_stats *cpustats = tot_stats->cpustats; |
Julian Anastasov | ea9f22c | 2011-03-14 01:41:54 +0200 | [diff] [blame] | 2035 | struct ip_vs_stats_user rates; |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 2036 | int i; |
| 2037 | |
| 2038 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ |
| 2039 | seq_puts(seq, |
| 2040 | " Total Incoming Outgoing Incoming Outgoing\n"); |
| 2041 | seq_printf(seq, |
| 2042 | "CPU Conns Packets Packets Bytes Bytes\n"); |
| 2043 | |
| 2044 | for_each_possible_cpu(i) { |
Julian Anastasov | 2a0751a | 2011-03-04 12:20:35 +0200 | [diff] [blame] | 2045 | struct ip_vs_cpu_stats *u = per_cpu_ptr(cpustats, i); |
| 2046 | unsigned int start; |
| 2047 | __u64 inbytes, outbytes; |
| 2048 | |
| 2049 | do { |
| 2050 | start = u64_stats_fetch_begin_bh(&u->syncp); |
| 2051 | inbytes = u->ustats.inbytes; |
| 2052 | outbytes = u->ustats.outbytes; |
| 2053 | } while (u64_stats_fetch_retry_bh(&u->syncp, start)); |
| 2054 | |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 2055 | seq_printf(seq, "%3X %8X %8X %8X %16LX %16LX\n", |
Julian Anastasov | 2a0751a | 2011-03-04 12:20:35 +0200 | [diff] [blame] | 2056 | i, u->ustats.conns, u->ustats.inpkts, |
| 2057 | u->ustats.outpkts, (__u64)inbytes, |
| 2058 | (__u64)outbytes); |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 2059 | } |
| 2060 | |
| 2061 | spin_lock_bh(&tot_stats->lock); |
Julian Anastasov | ea9f22c | 2011-03-14 01:41:54 +0200 | [diff] [blame] | 2062 | |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 2063 | seq_printf(seq, " ~ %8X %8X %8X %16LX %16LX\n\n", |
| 2064 | tot_stats->ustats.conns, tot_stats->ustats.inpkts, |
| 2065 | tot_stats->ustats.outpkts, |
| 2066 | (unsigned long long) tot_stats->ustats.inbytes, |
| 2067 | (unsigned long long) tot_stats->ustats.outbytes); |
| 2068 | |
Julian Anastasov | ea9f22c | 2011-03-14 01:41:54 +0200 | [diff] [blame] | 2069 | ip_vs_read_estimator(&rates, tot_stats); |
| 2070 | |
| 2071 | spin_unlock_bh(&tot_stats->lock); |
| 2072 | |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 2073 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ |
| 2074 | seq_puts(seq, |
| 2075 | " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n"); |
| 2076 | seq_printf(seq, " %8X %8X %8X %16X %16X\n", |
Julian Anastasov | ea9f22c | 2011-03-14 01:41:54 +0200 | [diff] [blame] | 2077 | rates.cps, |
| 2078 | rates.inpps, |
| 2079 | rates.outpps, |
| 2080 | rates.inbps, |
| 2081 | rates.outbps); |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 2082 | |
| 2083 | return 0; |
| 2084 | } |
| 2085 | |
| 2086 | static int ip_vs_stats_percpu_seq_open(struct inode *inode, struct file *file) |
| 2087 | { |
| 2088 | return single_open_net(inode, file, ip_vs_stats_percpu_show); |
| 2089 | } |
| 2090 | |
| 2091 | static const struct file_operations ip_vs_stats_percpu_fops = { |
| 2092 | .owner = THIS_MODULE, |
| 2093 | .open = ip_vs_stats_percpu_seq_open, |
| 2094 | .read = seq_read, |
| 2095 | .llseek = seq_lseek, |
| 2096 | .release = single_release, |
| 2097 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2098 | #endif |
| 2099 | |
| 2100 | /* |
| 2101 | * Set timeout values for tcp tcpfin udp in the timeout_table. |
| 2102 | */ |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 2103 | static int ip_vs_set_timeout(struct net *net, struct ip_vs_timeout_user *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2104 | { |
Changli Gao | 091bb34 | 2011-01-21 18:02:13 +0800 | [diff] [blame] | 2105 | #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP) |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 2106 | struct ip_vs_proto_data *pd; |
Changli Gao | 091bb34 | 2011-01-21 18:02:13 +0800 | [diff] [blame] | 2107 | #endif |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 2108 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2109 | IP_VS_DBG(2, "Setting timeout tcp:%d tcpfin:%d udp:%d\n", |
| 2110 | u->tcp_timeout, |
| 2111 | u->tcp_fin_timeout, |
| 2112 | u->udp_timeout); |
| 2113 | |
| 2114 | #ifdef CONFIG_IP_VS_PROTO_TCP |
| 2115 | if (u->tcp_timeout) { |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 2116 | pd = ip_vs_proto_data_get(net, IPPROTO_TCP); |
| 2117 | pd->timeout_table[IP_VS_TCP_S_ESTABLISHED] |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2118 | = u->tcp_timeout * HZ; |
| 2119 | } |
| 2120 | |
| 2121 | if (u->tcp_fin_timeout) { |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 2122 | pd = ip_vs_proto_data_get(net, IPPROTO_TCP); |
| 2123 | pd->timeout_table[IP_VS_TCP_S_FIN_WAIT] |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2124 | = u->tcp_fin_timeout * HZ; |
| 2125 | } |
| 2126 | #endif |
| 2127 | |
| 2128 | #ifdef CONFIG_IP_VS_PROTO_UDP |
| 2129 | if (u->udp_timeout) { |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 2130 | pd = ip_vs_proto_data_get(net, IPPROTO_UDP); |
| 2131 | pd->timeout_table[IP_VS_UDP_S_NORMAL] |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2132 | = u->udp_timeout * HZ; |
| 2133 | } |
| 2134 | #endif |
| 2135 | return 0; |
| 2136 | } |
| 2137 | |
| 2138 | |
| 2139 | #define SET_CMDID(cmd) (cmd - IP_VS_BASE_CTL) |
| 2140 | #define SERVICE_ARG_LEN (sizeof(struct ip_vs_service_user)) |
| 2141 | #define SVCDEST_ARG_LEN (sizeof(struct ip_vs_service_user) + \ |
| 2142 | sizeof(struct ip_vs_dest_user)) |
| 2143 | #define TIMEOUT_ARG_LEN (sizeof(struct ip_vs_timeout_user)) |
| 2144 | #define DAEMON_ARG_LEN (sizeof(struct ip_vs_daemon_user)) |
| 2145 | #define MAX_ARG_LEN SVCDEST_ARG_LEN |
| 2146 | |
Arjan van de Ven | 9b5b5cf | 2005-11-29 16:21:38 -0800 | [diff] [blame] | 2147 | static const unsigned char set_arglen[SET_CMDID(IP_VS_SO_SET_MAX)+1] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2148 | [SET_CMDID(IP_VS_SO_SET_ADD)] = SERVICE_ARG_LEN, |
| 2149 | [SET_CMDID(IP_VS_SO_SET_EDIT)] = SERVICE_ARG_LEN, |
| 2150 | [SET_CMDID(IP_VS_SO_SET_DEL)] = SERVICE_ARG_LEN, |
| 2151 | [SET_CMDID(IP_VS_SO_SET_FLUSH)] = 0, |
| 2152 | [SET_CMDID(IP_VS_SO_SET_ADDDEST)] = SVCDEST_ARG_LEN, |
| 2153 | [SET_CMDID(IP_VS_SO_SET_DELDEST)] = SVCDEST_ARG_LEN, |
| 2154 | [SET_CMDID(IP_VS_SO_SET_EDITDEST)] = SVCDEST_ARG_LEN, |
| 2155 | [SET_CMDID(IP_VS_SO_SET_TIMEOUT)] = TIMEOUT_ARG_LEN, |
| 2156 | [SET_CMDID(IP_VS_SO_SET_STARTDAEMON)] = DAEMON_ARG_LEN, |
| 2157 | [SET_CMDID(IP_VS_SO_SET_STOPDAEMON)] = DAEMON_ARG_LEN, |
| 2158 | [SET_CMDID(IP_VS_SO_SET_ZERO)] = SERVICE_ARG_LEN, |
| 2159 | }; |
| 2160 | |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 2161 | static void ip_vs_copy_usvc_compat(struct ip_vs_service_user_kern *usvc, |
| 2162 | struct ip_vs_service_user *usvc_compat) |
| 2163 | { |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 2164 | memset(usvc, 0, sizeof(*usvc)); |
| 2165 | |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 2166 | usvc->af = AF_INET; |
| 2167 | usvc->protocol = usvc_compat->protocol; |
| 2168 | usvc->addr.ip = usvc_compat->addr; |
| 2169 | usvc->port = usvc_compat->port; |
| 2170 | usvc->fwmark = usvc_compat->fwmark; |
| 2171 | |
| 2172 | /* Deep copy of sched_name is not needed here */ |
| 2173 | usvc->sched_name = usvc_compat->sched_name; |
| 2174 | |
| 2175 | usvc->flags = usvc_compat->flags; |
| 2176 | usvc->timeout = usvc_compat->timeout; |
| 2177 | usvc->netmask = usvc_compat->netmask; |
| 2178 | } |
| 2179 | |
| 2180 | static void ip_vs_copy_udest_compat(struct ip_vs_dest_user_kern *udest, |
| 2181 | struct ip_vs_dest_user *udest_compat) |
| 2182 | { |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 2183 | memset(udest, 0, sizeof(*udest)); |
| 2184 | |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 2185 | udest->addr.ip = udest_compat->addr; |
| 2186 | udest->port = udest_compat->port; |
| 2187 | udest->conn_flags = udest_compat->conn_flags; |
| 2188 | udest->weight = udest_compat->weight; |
| 2189 | udest->u_threshold = udest_compat->u_threshold; |
| 2190 | udest->l_threshold = udest_compat->l_threshold; |
| 2191 | } |
| 2192 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2193 | static int |
| 2194 | do_ip_vs_set_ctl(struct sock *sk, int cmd, void __user *user, unsigned int len) |
| 2195 | { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2196 | struct net *net = sock_net(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2197 | int ret; |
| 2198 | unsigned char arg[MAX_ARG_LEN]; |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 2199 | struct ip_vs_service_user *usvc_compat; |
| 2200 | struct ip_vs_service_user_kern usvc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2201 | struct ip_vs_service *svc; |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 2202 | struct ip_vs_dest_user *udest_compat; |
| 2203 | struct ip_vs_dest_user_kern udest; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2204 | |
| 2205 | if (!capable(CAP_NET_ADMIN)) |
| 2206 | return -EPERM; |
| 2207 | |
Arjan van de Ven | 04bcef2 | 2010-01-04 16:37:12 +0100 | [diff] [blame] | 2208 | if (cmd < IP_VS_BASE_CTL || cmd > IP_VS_SO_SET_MAX) |
| 2209 | return -EINVAL; |
| 2210 | if (len < 0 || len > MAX_ARG_LEN) |
| 2211 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2212 | if (len != set_arglen[SET_CMDID(cmd)]) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 2213 | pr_err("set_ctl: len %u != %u\n", |
| 2214 | len, set_arglen[SET_CMDID(cmd)]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2215 | return -EINVAL; |
| 2216 | } |
| 2217 | |
| 2218 | if (copy_from_user(arg, user, len) != 0) |
| 2219 | return -EFAULT; |
| 2220 | |
| 2221 | /* increase the module use count */ |
| 2222 | ip_vs_use_count_inc(); |
| 2223 | |
Ingo Molnar | 14cc3e2 | 2006-03-26 01:37:14 -0800 | [diff] [blame] | 2224 | if (mutex_lock_interruptible(&__ip_vs_mutex)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2225 | ret = -ERESTARTSYS; |
| 2226 | goto out_dec; |
| 2227 | } |
| 2228 | |
| 2229 | if (cmd == IP_VS_SO_SET_FLUSH) { |
| 2230 | /* Flush the virtual service */ |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2231 | ret = ip_vs_flush(net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2232 | goto out_unlock; |
| 2233 | } else if (cmd == IP_VS_SO_SET_TIMEOUT) { |
| 2234 | /* Set timeout values for (tcp tcpfin udp) */ |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 2235 | ret = ip_vs_set_timeout(net, (struct ip_vs_timeout_user *)arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2236 | goto out_unlock; |
| 2237 | } else if (cmd == IP_VS_SO_SET_STARTDAEMON) { |
| 2238 | struct ip_vs_daemon_user *dm = (struct ip_vs_daemon_user *)arg; |
Hans Schillstrom | f131315 | 2011-01-03 14:44:55 +0100 | [diff] [blame] | 2239 | ret = start_sync_thread(net, dm->state, dm->mcast_ifn, |
| 2240 | dm->syncid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2241 | goto out_unlock; |
| 2242 | } else if (cmd == IP_VS_SO_SET_STOPDAEMON) { |
| 2243 | struct ip_vs_daemon_user *dm = (struct ip_vs_daemon_user *)arg; |
Hans Schillstrom | f131315 | 2011-01-03 14:44:55 +0100 | [diff] [blame] | 2244 | ret = stop_sync_thread(net, dm->state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2245 | goto out_unlock; |
| 2246 | } |
| 2247 | |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 2248 | usvc_compat = (struct ip_vs_service_user *)arg; |
| 2249 | udest_compat = (struct ip_vs_dest_user *)(usvc_compat + 1); |
| 2250 | |
| 2251 | /* We only use the new structs internally, so copy userspace compat |
| 2252 | * structs to extended internal versions */ |
| 2253 | ip_vs_copy_usvc_compat(&usvc, usvc_compat); |
| 2254 | ip_vs_copy_udest_compat(&udest, udest_compat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2255 | |
| 2256 | if (cmd == IP_VS_SO_SET_ZERO) { |
| 2257 | /* if no service address is set, zero counters in all */ |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 2258 | if (!usvc.fwmark && !usvc.addr.ip && !usvc.port) { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2259 | ret = ip_vs_zero_all(net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2260 | goto out_unlock; |
| 2261 | } |
| 2262 | } |
| 2263 | |
Venkata Mohan Reddy | 2906f66 | 2010-02-18 12:31:05 +0100 | [diff] [blame] | 2264 | /* Check for valid protocol: TCP or UDP or SCTP, even for fwmark!=0 */ |
| 2265 | if (usvc.protocol != IPPROTO_TCP && usvc.protocol != IPPROTO_UDP && |
| 2266 | usvc.protocol != IPPROTO_SCTP) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 2267 | pr_err("set_ctl: invalid protocol: %d %pI4:%d %s\n", |
| 2268 | usvc.protocol, &usvc.addr.ip, |
| 2269 | ntohs(usvc.port), usvc.sched_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2270 | ret = -EFAULT; |
| 2271 | goto out_unlock; |
| 2272 | } |
| 2273 | |
| 2274 | /* Lookup the exact service by <protocol, addr, port> or fwmark */ |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 2275 | if (usvc.fwmark == 0) |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2276 | svc = __ip_vs_service_find(net, usvc.af, usvc.protocol, |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 2277 | &usvc.addr, usvc.port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2278 | else |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2279 | svc = __ip_vs_svc_fwm_find(net, usvc.af, usvc.fwmark); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2280 | |
| 2281 | if (cmd != IP_VS_SO_SET_ADD |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 2282 | && (svc == NULL || svc->protocol != usvc.protocol)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2283 | ret = -ESRCH; |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 2284 | goto out_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2285 | } |
| 2286 | |
| 2287 | switch (cmd) { |
| 2288 | case IP_VS_SO_SET_ADD: |
| 2289 | if (svc != NULL) |
| 2290 | ret = -EEXIST; |
| 2291 | else |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2292 | ret = ip_vs_add_service(net, &usvc, &svc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2293 | break; |
| 2294 | case IP_VS_SO_SET_EDIT: |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 2295 | ret = ip_vs_edit_service(svc, &usvc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2296 | break; |
| 2297 | case IP_VS_SO_SET_DEL: |
| 2298 | ret = ip_vs_del_service(svc); |
| 2299 | if (!ret) |
| 2300 | goto out_unlock; |
| 2301 | break; |
| 2302 | case IP_VS_SO_SET_ZERO: |
| 2303 | ret = ip_vs_zero_service(svc); |
| 2304 | break; |
| 2305 | case IP_VS_SO_SET_ADDDEST: |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 2306 | ret = ip_vs_add_dest(svc, &udest); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2307 | break; |
| 2308 | case IP_VS_SO_SET_EDITDEST: |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 2309 | ret = ip_vs_edit_dest(svc, &udest); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2310 | break; |
| 2311 | case IP_VS_SO_SET_DELDEST: |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 2312 | ret = ip_vs_del_dest(svc, &udest); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2313 | break; |
| 2314 | default: |
| 2315 | ret = -EINVAL; |
| 2316 | } |
| 2317 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2318 | out_unlock: |
Ingo Molnar | 14cc3e2 | 2006-03-26 01:37:14 -0800 | [diff] [blame] | 2319 | mutex_unlock(&__ip_vs_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2320 | out_dec: |
| 2321 | /* decrease the module use count */ |
| 2322 | ip_vs_use_count_dec(); |
| 2323 | |
| 2324 | return ret; |
| 2325 | } |
| 2326 | |
| 2327 | |
| 2328 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2329 | ip_vs_copy_service(struct ip_vs_service_entry *dst, struct ip_vs_service *src) |
| 2330 | { |
| 2331 | dst->protocol = src->protocol; |
Julius Volz | e7ade46 | 2008-09-02 15:55:33 +0200 | [diff] [blame] | 2332 | dst->addr = src->addr.ip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2333 | dst->port = src->port; |
| 2334 | dst->fwmark = src->fwmark; |
pageexec | 4da62fc | 2005-06-26 16:00:19 -0700 | [diff] [blame] | 2335 | strlcpy(dst->sched_name, src->scheduler->name, sizeof(dst->sched_name)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2336 | dst->flags = src->flags; |
| 2337 | dst->timeout = src->timeout / HZ; |
| 2338 | dst->netmask = src->netmask; |
| 2339 | dst->num_dests = src->num_dests; |
| 2340 | ip_vs_copy_stats(&dst->stats, &src->stats); |
| 2341 | } |
| 2342 | |
| 2343 | static inline int |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2344 | __ip_vs_get_service_entries(struct net *net, |
| 2345 | const struct ip_vs_get_services *get, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2346 | struct ip_vs_get_services __user *uptr) |
| 2347 | { |
| 2348 | int idx, count=0; |
| 2349 | struct ip_vs_service *svc; |
| 2350 | struct ip_vs_service_entry entry; |
| 2351 | int ret = 0; |
| 2352 | |
| 2353 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { |
| 2354 | list_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) { |
Julius Volz | f94fd04 | 2008-09-02 15:55:55 +0200 | [diff] [blame] | 2355 | /* Only expose IPv4 entries to old interface */ |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2356 | if (svc->af != AF_INET || !net_eq(svc->net, net)) |
Julius Volz | f94fd04 | 2008-09-02 15:55:55 +0200 | [diff] [blame] | 2357 | continue; |
| 2358 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2359 | if (count >= get->num_services) |
| 2360 | goto out; |
pageexec | 4da62fc | 2005-06-26 16:00:19 -0700 | [diff] [blame] | 2361 | memset(&entry, 0, sizeof(entry)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2362 | ip_vs_copy_service(&entry, svc); |
| 2363 | if (copy_to_user(&uptr->entrytable[count], |
| 2364 | &entry, sizeof(entry))) { |
| 2365 | ret = -EFAULT; |
| 2366 | goto out; |
| 2367 | } |
| 2368 | count++; |
| 2369 | } |
| 2370 | } |
| 2371 | |
| 2372 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { |
| 2373 | list_for_each_entry(svc, &ip_vs_svc_fwm_table[idx], f_list) { |
Julius Volz | f94fd04 | 2008-09-02 15:55:55 +0200 | [diff] [blame] | 2374 | /* Only expose IPv4 entries to old interface */ |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2375 | if (svc->af != AF_INET || !net_eq(svc->net, net)) |
Julius Volz | f94fd04 | 2008-09-02 15:55:55 +0200 | [diff] [blame] | 2376 | continue; |
| 2377 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2378 | if (count >= get->num_services) |
| 2379 | goto out; |
pageexec | 4da62fc | 2005-06-26 16:00:19 -0700 | [diff] [blame] | 2380 | memset(&entry, 0, sizeof(entry)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2381 | ip_vs_copy_service(&entry, svc); |
| 2382 | if (copy_to_user(&uptr->entrytable[count], |
| 2383 | &entry, sizeof(entry))) { |
| 2384 | ret = -EFAULT; |
| 2385 | goto out; |
| 2386 | } |
| 2387 | count++; |
| 2388 | } |
| 2389 | } |
| 2390 | out: |
| 2391 | return ret; |
| 2392 | } |
| 2393 | |
| 2394 | static inline int |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2395 | __ip_vs_get_dest_entries(struct net *net, const struct ip_vs_get_dests *get, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2396 | struct ip_vs_get_dests __user *uptr) |
| 2397 | { |
| 2398 | struct ip_vs_service *svc; |
Julius Volz | b18610d | 2008-09-02 15:55:37 +0200 | [diff] [blame] | 2399 | union nf_inet_addr addr = { .ip = get->addr }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2400 | int ret = 0; |
| 2401 | |
| 2402 | if (get->fwmark) |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2403 | svc = __ip_vs_svc_fwm_find(net, AF_INET, get->fwmark); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2404 | else |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2405 | svc = __ip_vs_service_find(net, AF_INET, get->protocol, &addr, |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 2406 | get->port); |
Julius Volz | b18610d | 2008-09-02 15:55:37 +0200 | [diff] [blame] | 2407 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2408 | if (svc) { |
| 2409 | int count = 0; |
| 2410 | struct ip_vs_dest *dest; |
| 2411 | struct ip_vs_dest_entry entry; |
| 2412 | |
| 2413 | list_for_each_entry(dest, &svc->destinations, n_list) { |
| 2414 | if (count >= get->num_dests) |
| 2415 | break; |
| 2416 | |
Julius Volz | e7ade46 | 2008-09-02 15:55:33 +0200 | [diff] [blame] | 2417 | entry.addr = dest->addr.ip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2418 | entry.port = dest->port; |
| 2419 | entry.conn_flags = atomic_read(&dest->conn_flags); |
| 2420 | entry.weight = atomic_read(&dest->weight); |
| 2421 | entry.u_threshold = dest->u_threshold; |
| 2422 | entry.l_threshold = dest->l_threshold; |
| 2423 | entry.activeconns = atomic_read(&dest->activeconns); |
| 2424 | entry.inactconns = atomic_read(&dest->inactconns); |
| 2425 | entry.persistconns = atomic_read(&dest->persistconns); |
| 2426 | ip_vs_copy_stats(&entry.stats, &dest->stats); |
| 2427 | if (copy_to_user(&uptr->entrytable[count], |
| 2428 | &entry, sizeof(entry))) { |
| 2429 | ret = -EFAULT; |
| 2430 | break; |
| 2431 | } |
| 2432 | count++; |
| 2433 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2434 | } else |
| 2435 | ret = -ESRCH; |
| 2436 | return ret; |
| 2437 | } |
| 2438 | |
| 2439 | static inline void |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 2440 | __ip_vs_get_timeouts(struct net *net, struct ip_vs_timeout_user *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2441 | { |
Changli Gao | 091bb34 | 2011-01-21 18:02:13 +0800 | [diff] [blame] | 2442 | #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP) |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 2443 | struct ip_vs_proto_data *pd; |
Changli Gao | 091bb34 | 2011-01-21 18:02:13 +0800 | [diff] [blame] | 2444 | #endif |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 2445 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2446 | #ifdef CONFIG_IP_VS_PROTO_TCP |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 2447 | pd = ip_vs_proto_data_get(net, IPPROTO_TCP); |
| 2448 | u->tcp_timeout = pd->timeout_table[IP_VS_TCP_S_ESTABLISHED] / HZ; |
| 2449 | u->tcp_fin_timeout = pd->timeout_table[IP_VS_TCP_S_FIN_WAIT] / HZ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2450 | #endif |
| 2451 | #ifdef CONFIG_IP_VS_PROTO_UDP |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 2452 | pd = ip_vs_proto_data_get(net, IPPROTO_UDP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2453 | u->udp_timeout = |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 2454 | pd->timeout_table[IP_VS_UDP_S_NORMAL] / HZ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2455 | #endif |
| 2456 | } |
| 2457 | |
| 2458 | |
| 2459 | #define GET_CMDID(cmd) (cmd - IP_VS_BASE_CTL) |
| 2460 | #define GET_INFO_ARG_LEN (sizeof(struct ip_vs_getinfo)) |
| 2461 | #define GET_SERVICES_ARG_LEN (sizeof(struct ip_vs_get_services)) |
| 2462 | #define GET_SERVICE_ARG_LEN (sizeof(struct ip_vs_service_entry)) |
| 2463 | #define GET_DESTS_ARG_LEN (sizeof(struct ip_vs_get_dests)) |
| 2464 | #define GET_TIMEOUT_ARG_LEN (sizeof(struct ip_vs_timeout_user)) |
| 2465 | #define GET_DAEMON_ARG_LEN (sizeof(struct ip_vs_daemon_user) * 2) |
| 2466 | |
Arjan van de Ven | 9b5b5cf | 2005-11-29 16:21:38 -0800 | [diff] [blame] | 2467 | static const unsigned char get_arglen[GET_CMDID(IP_VS_SO_GET_MAX)+1] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2468 | [GET_CMDID(IP_VS_SO_GET_VERSION)] = 64, |
| 2469 | [GET_CMDID(IP_VS_SO_GET_INFO)] = GET_INFO_ARG_LEN, |
| 2470 | [GET_CMDID(IP_VS_SO_GET_SERVICES)] = GET_SERVICES_ARG_LEN, |
| 2471 | [GET_CMDID(IP_VS_SO_GET_SERVICE)] = GET_SERVICE_ARG_LEN, |
| 2472 | [GET_CMDID(IP_VS_SO_GET_DESTS)] = GET_DESTS_ARG_LEN, |
| 2473 | [GET_CMDID(IP_VS_SO_GET_TIMEOUT)] = GET_TIMEOUT_ARG_LEN, |
| 2474 | [GET_CMDID(IP_VS_SO_GET_DAEMON)] = GET_DAEMON_ARG_LEN, |
| 2475 | }; |
| 2476 | |
| 2477 | static int |
| 2478 | do_ip_vs_get_ctl(struct sock *sk, int cmd, void __user *user, int *len) |
| 2479 | { |
| 2480 | unsigned char arg[128]; |
| 2481 | int ret = 0; |
Arjan van de Ven | 04bcef2 | 2010-01-04 16:37:12 +0100 | [diff] [blame] | 2482 | unsigned int copylen; |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2483 | struct net *net = sock_net(sk); |
Hans Schillstrom | f131315 | 2011-01-03 14:44:55 +0100 | [diff] [blame] | 2484 | struct netns_ipvs *ipvs = net_ipvs(net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2485 | |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2486 | BUG_ON(!net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2487 | if (!capable(CAP_NET_ADMIN)) |
| 2488 | return -EPERM; |
| 2489 | |
Arjan van de Ven | 04bcef2 | 2010-01-04 16:37:12 +0100 | [diff] [blame] | 2490 | if (cmd < IP_VS_BASE_CTL || cmd > IP_VS_SO_GET_MAX) |
| 2491 | return -EINVAL; |
| 2492 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2493 | if (*len < get_arglen[GET_CMDID(cmd)]) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 2494 | pr_err("get_ctl: len %u < %u\n", |
| 2495 | *len, get_arglen[GET_CMDID(cmd)]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2496 | return -EINVAL; |
| 2497 | } |
| 2498 | |
Arjan van de Ven | 04bcef2 | 2010-01-04 16:37:12 +0100 | [diff] [blame] | 2499 | copylen = get_arglen[GET_CMDID(cmd)]; |
| 2500 | if (copylen > 128) |
| 2501 | return -EINVAL; |
| 2502 | |
| 2503 | if (copy_from_user(arg, user, copylen) != 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2504 | return -EFAULT; |
| 2505 | |
Ingo Molnar | 14cc3e2 | 2006-03-26 01:37:14 -0800 | [diff] [blame] | 2506 | if (mutex_lock_interruptible(&__ip_vs_mutex)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2507 | return -ERESTARTSYS; |
| 2508 | |
| 2509 | switch (cmd) { |
| 2510 | case IP_VS_SO_GET_VERSION: |
| 2511 | { |
| 2512 | char buf[64]; |
| 2513 | |
| 2514 | sprintf(buf, "IP Virtual Server version %d.%d.%d (size=%d)", |
Catalin(ux) M. BOIE | 6f7edb4 | 2010-01-05 05:50:24 +0100 | [diff] [blame] | 2515 | NVERSION(IP_VS_VERSION_CODE), ip_vs_conn_tab_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2516 | if (copy_to_user(user, buf, strlen(buf)+1) != 0) { |
| 2517 | ret = -EFAULT; |
| 2518 | goto out; |
| 2519 | } |
| 2520 | *len = strlen(buf)+1; |
| 2521 | } |
| 2522 | break; |
| 2523 | |
| 2524 | case IP_VS_SO_GET_INFO: |
| 2525 | { |
| 2526 | struct ip_vs_getinfo info; |
| 2527 | info.version = IP_VS_VERSION_CODE; |
Catalin(ux) M. BOIE | 6f7edb4 | 2010-01-05 05:50:24 +0100 | [diff] [blame] | 2528 | info.size = ip_vs_conn_tab_size; |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 2529 | info.num_services = ipvs->num_services; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2530 | if (copy_to_user(user, &info, sizeof(info)) != 0) |
| 2531 | ret = -EFAULT; |
| 2532 | } |
| 2533 | break; |
| 2534 | |
| 2535 | case IP_VS_SO_GET_SERVICES: |
| 2536 | { |
| 2537 | struct ip_vs_get_services *get; |
| 2538 | int size; |
| 2539 | |
| 2540 | get = (struct ip_vs_get_services *)arg; |
| 2541 | size = sizeof(*get) + |
| 2542 | sizeof(struct ip_vs_service_entry) * get->num_services; |
| 2543 | if (*len != size) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 2544 | pr_err("length: %u != %u\n", *len, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2545 | ret = -EINVAL; |
| 2546 | goto out; |
| 2547 | } |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2548 | ret = __ip_vs_get_service_entries(net, get, user); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2549 | } |
| 2550 | break; |
| 2551 | |
| 2552 | case IP_VS_SO_GET_SERVICE: |
| 2553 | { |
| 2554 | struct ip_vs_service_entry *entry; |
| 2555 | struct ip_vs_service *svc; |
Julius Volz | b18610d | 2008-09-02 15:55:37 +0200 | [diff] [blame] | 2556 | union nf_inet_addr addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2557 | |
| 2558 | entry = (struct ip_vs_service_entry *)arg; |
Julius Volz | b18610d | 2008-09-02 15:55:37 +0200 | [diff] [blame] | 2559 | addr.ip = entry->addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2560 | if (entry->fwmark) |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2561 | svc = __ip_vs_svc_fwm_find(net, AF_INET, entry->fwmark); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2562 | else |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2563 | svc = __ip_vs_service_find(net, AF_INET, |
| 2564 | entry->protocol, &addr, |
| 2565 | entry->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2566 | if (svc) { |
| 2567 | ip_vs_copy_service(entry, svc); |
| 2568 | if (copy_to_user(user, entry, sizeof(*entry)) != 0) |
| 2569 | ret = -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2570 | } else |
| 2571 | ret = -ESRCH; |
| 2572 | } |
| 2573 | break; |
| 2574 | |
| 2575 | case IP_VS_SO_GET_DESTS: |
| 2576 | { |
| 2577 | struct ip_vs_get_dests *get; |
| 2578 | int size; |
| 2579 | |
| 2580 | get = (struct ip_vs_get_dests *)arg; |
| 2581 | size = sizeof(*get) + |
| 2582 | sizeof(struct ip_vs_dest_entry) * get->num_dests; |
| 2583 | if (*len != size) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 2584 | pr_err("length: %u != %u\n", *len, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2585 | ret = -EINVAL; |
| 2586 | goto out; |
| 2587 | } |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2588 | ret = __ip_vs_get_dest_entries(net, get, user); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2589 | } |
| 2590 | break; |
| 2591 | |
| 2592 | case IP_VS_SO_GET_TIMEOUT: |
| 2593 | { |
| 2594 | struct ip_vs_timeout_user t; |
| 2595 | |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 2596 | __ip_vs_get_timeouts(net, &t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2597 | if (copy_to_user(user, &t, sizeof(t)) != 0) |
| 2598 | ret = -EFAULT; |
| 2599 | } |
| 2600 | break; |
| 2601 | |
| 2602 | case IP_VS_SO_GET_DAEMON: |
| 2603 | { |
| 2604 | struct ip_vs_daemon_user d[2]; |
| 2605 | |
| 2606 | memset(&d, 0, sizeof(d)); |
Hans Schillstrom | f131315 | 2011-01-03 14:44:55 +0100 | [diff] [blame] | 2607 | if (ipvs->sync_state & IP_VS_STATE_MASTER) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2608 | d[0].state = IP_VS_STATE_MASTER; |
Hans Schillstrom | f131315 | 2011-01-03 14:44:55 +0100 | [diff] [blame] | 2609 | strlcpy(d[0].mcast_ifn, ipvs->master_mcast_ifn, |
| 2610 | sizeof(d[0].mcast_ifn)); |
| 2611 | d[0].syncid = ipvs->master_syncid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2612 | } |
Hans Schillstrom | f131315 | 2011-01-03 14:44:55 +0100 | [diff] [blame] | 2613 | if (ipvs->sync_state & IP_VS_STATE_BACKUP) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2614 | d[1].state = IP_VS_STATE_BACKUP; |
Hans Schillstrom | f131315 | 2011-01-03 14:44:55 +0100 | [diff] [blame] | 2615 | strlcpy(d[1].mcast_ifn, ipvs->backup_mcast_ifn, |
| 2616 | sizeof(d[1].mcast_ifn)); |
| 2617 | d[1].syncid = ipvs->backup_syncid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2618 | } |
| 2619 | if (copy_to_user(user, &d, sizeof(d)) != 0) |
| 2620 | ret = -EFAULT; |
| 2621 | } |
| 2622 | break; |
| 2623 | |
| 2624 | default: |
| 2625 | ret = -EINVAL; |
| 2626 | } |
| 2627 | |
| 2628 | out: |
Ingo Molnar | 14cc3e2 | 2006-03-26 01:37:14 -0800 | [diff] [blame] | 2629 | mutex_unlock(&__ip_vs_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2630 | return ret; |
| 2631 | } |
| 2632 | |
| 2633 | |
| 2634 | static struct nf_sockopt_ops ip_vs_sockopts = { |
| 2635 | .pf = PF_INET, |
| 2636 | .set_optmin = IP_VS_BASE_CTL, |
| 2637 | .set_optmax = IP_VS_SO_SET_MAX+1, |
| 2638 | .set = do_ip_vs_set_ctl, |
| 2639 | .get_optmin = IP_VS_BASE_CTL, |
| 2640 | .get_optmax = IP_VS_SO_GET_MAX+1, |
| 2641 | .get = do_ip_vs_get_ctl, |
Neil Horman | 16fcec3 | 2007-09-11 11:28:26 +0200 | [diff] [blame] | 2642 | .owner = THIS_MODULE, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2643 | }; |
| 2644 | |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2645 | /* |
| 2646 | * Generic Netlink interface |
| 2647 | */ |
| 2648 | |
| 2649 | /* IPVS genetlink family */ |
| 2650 | static struct genl_family ip_vs_genl_family = { |
| 2651 | .id = GENL_ID_GENERATE, |
| 2652 | .hdrsize = 0, |
| 2653 | .name = IPVS_GENL_NAME, |
| 2654 | .version = IPVS_GENL_VERSION, |
| 2655 | .maxattr = IPVS_CMD_MAX, |
Hans Schillstrom | c6d2d44 | 2011-01-03 14:45:03 +0100 | [diff] [blame] | 2656 | .netnsok = true, /* Make ipvsadm to work on netns */ |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2657 | }; |
| 2658 | |
| 2659 | /* Policy used for first-level command attributes */ |
| 2660 | static const struct nla_policy ip_vs_cmd_policy[IPVS_CMD_ATTR_MAX + 1] = { |
| 2661 | [IPVS_CMD_ATTR_SERVICE] = { .type = NLA_NESTED }, |
| 2662 | [IPVS_CMD_ATTR_DEST] = { .type = NLA_NESTED }, |
| 2663 | [IPVS_CMD_ATTR_DAEMON] = { .type = NLA_NESTED }, |
| 2664 | [IPVS_CMD_ATTR_TIMEOUT_TCP] = { .type = NLA_U32 }, |
| 2665 | [IPVS_CMD_ATTR_TIMEOUT_TCP_FIN] = { .type = NLA_U32 }, |
| 2666 | [IPVS_CMD_ATTR_TIMEOUT_UDP] = { .type = NLA_U32 }, |
| 2667 | }; |
| 2668 | |
| 2669 | /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DAEMON */ |
| 2670 | static const struct nla_policy ip_vs_daemon_policy[IPVS_DAEMON_ATTR_MAX + 1] = { |
| 2671 | [IPVS_DAEMON_ATTR_STATE] = { .type = NLA_U32 }, |
| 2672 | [IPVS_DAEMON_ATTR_MCAST_IFN] = { .type = NLA_NUL_STRING, |
| 2673 | .len = IP_VS_IFNAME_MAXLEN }, |
| 2674 | [IPVS_DAEMON_ATTR_SYNC_ID] = { .type = NLA_U32 }, |
| 2675 | }; |
| 2676 | |
| 2677 | /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_SERVICE */ |
| 2678 | static const struct nla_policy ip_vs_svc_policy[IPVS_SVC_ATTR_MAX + 1] = { |
| 2679 | [IPVS_SVC_ATTR_AF] = { .type = NLA_U16 }, |
| 2680 | [IPVS_SVC_ATTR_PROTOCOL] = { .type = NLA_U16 }, |
| 2681 | [IPVS_SVC_ATTR_ADDR] = { .type = NLA_BINARY, |
| 2682 | .len = sizeof(union nf_inet_addr) }, |
| 2683 | [IPVS_SVC_ATTR_PORT] = { .type = NLA_U16 }, |
| 2684 | [IPVS_SVC_ATTR_FWMARK] = { .type = NLA_U32 }, |
| 2685 | [IPVS_SVC_ATTR_SCHED_NAME] = { .type = NLA_NUL_STRING, |
| 2686 | .len = IP_VS_SCHEDNAME_MAXLEN }, |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 2687 | [IPVS_SVC_ATTR_PE_NAME] = { .type = NLA_NUL_STRING, |
| 2688 | .len = IP_VS_PENAME_MAXLEN }, |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2689 | [IPVS_SVC_ATTR_FLAGS] = { .type = NLA_BINARY, |
| 2690 | .len = sizeof(struct ip_vs_flags) }, |
| 2691 | [IPVS_SVC_ATTR_TIMEOUT] = { .type = NLA_U32 }, |
| 2692 | [IPVS_SVC_ATTR_NETMASK] = { .type = NLA_U32 }, |
| 2693 | [IPVS_SVC_ATTR_STATS] = { .type = NLA_NESTED }, |
| 2694 | }; |
| 2695 | |
| 2696 | /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DEST */ |
| 2697 | static const struct nla_policy ip_vs_dest_policy[IPVS_DEST_ATTR_MAX + 1] = { |
| 2698 | [IPVS_DEST_ATTR_ADDR] = { .type = NLA_BINARY, |
| 2699 | .len = sizeof(union nf_inet_addr) }, |
| 2700 | [IPVS_DEST_ATTR_PORT] = { .type = NLA_U16 }, |
| 2701 | [IPVS_DEST_ATTR_FWD_METHOD] = { .type = NLA_U32 }, |
| 2702 | [IPVS_DEST_ATTR_WEIGHT] = { .type = NLA_U32 }, |
| 2703 | [IPVS_DEST_ATTR_U_THRESH] = { .type = NLA_U32 }, |
| 2704 | [IPVS_DEST_ATTR_L_THRESH] = { .type = NLA_U32 }, |
| 2705 | [IPVS_DEST_ATTR_ACTIVE_CONNS] = { .type = NLA_U32 }, |
| 2706 | [IPVS_DEST_ATTR_INACT_CONNS] = { .type = NLA_U32 }, |
| 2707 | [IPVS_DEST_ATTR_PERSIST_CONNS] = { .type = NLA_U32 }, |
| 2708 | [IPVS_DEST_ATTR_STATS] = { .type = NLA_NESTED }, |
| 2709 | }; |
| 2710 | |
| 2711 | static int ip_vs_genl_fill_stats(struct sk_buff *skb, int container_type, |
| 2712 | struct ip_vs_stats *stats) |
| 2713 | { |
Julian Anastasov | 55a3d4e | 2011-03-14 01:37:49 +0200 | [diff] [blame] | 2714 | struct ip_vs_stats_user ustats; |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2715 | struct nlattr *nl_stats = nla_nest_start(skb, container_type); |
| 2716 | if (!nl_stats) |
| 2717 | return -EMSGSIZE; |
| 2718 | |
Julian Anastasov | 55a3d4e | 2011-03-14 01:37:49 +0200 | [diff] [blame] | 2719 | ip_vs_copy_stats(&ustats, stats); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2720 | |
Julian Anastasov | 55a3d4e | 2011-03-14 01:37:49 +0200 | [diff] [blame] | 2721 | NLA_PUT_U32(skb, IPVS_STATS_ATTR_CONNS, ustats.conns); |
| 2722 | NLA_PUT_U32(skb, IPVS_STATS_ATTR_INPKTS, ustats.inpkts); |
| 2723 | NLA_PUT_U32(skb, IPVS_STATS_ATTR_OUTPKTS, ustats.outpkts); |
| 2724 | NLA_PUT_U64(skb, IPVS_STATS_ATTR_INBYTES, ustats.inbytes); |
| 2725 | NLA_PUT_U64(skb, IPVS_STATS_ATTR_OUTBYTES, ustats.outbytes); |
| 2726 | NLA_PUT_U32(skb, IPVS_STATS_ATTR_CPS, ustats.cps); |
| 2727 | NLA_PUT_U32(skb, IPVS_STATS_ATTR_INPPS, ustats.inpps); |
| 2728 | NLA_PUT_U32(skb, IPVS_STATS_ATTR_OUTPPS, ustats.outpps); |
| 2729 | NLA_PUT_U32(skb, IPVS_STATS_ATTR_INBPS, ustats.inbps); |
| 2730 | NLA_PUT_U32(skb, IPVS_STATS_ATTR_OUTBPS, ustats.outbps); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2731 | |
| 2732 | nla_nest_end(skb, nl_stats); |
| 2733 | |
| 2734 | return 0; |
| 2735 | |
| 2736 | nla_put_failure: |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2737 | nla_nest_cancel(skb, nl_stats); |
| 2738 | return -EMSGSIZE; |
| 2739 | } |
| 2740 | |
| 2741 | static int ip_vs_genl_fill_service(struct sk_buff *skb, |
| 2742 | struct ip_vs_service *svc) |
| 2743 | { |
| 2744 | struct nlattr *nl_service; |
| 2745 | struct ip_vs_flags flags = { .flags = svc->flags, |
| 2746 | .mask = ~0 }; |
| 2747 | |
| 2748 | nl_service = nla_nest_start(skb, IPVS_CMD_ATTR_SERVICE); |
| 2749 | if (!nl_service) |
| 2750 | return -EMSGSIZE; |
| 2751 | |
Julius Volz | f94fd04 | 2008-09-02 15:55:55 +0200 | [diff] [blame] | 2752 | NLA_PUT_U16(skb, IPVS_SVC_ATTR_AF, svc->af); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2753 | |
| 2754 | if (svc->fwmark) { |
| 2755 | NLA_PUT_U32(skb, IPVS_SVC_ATTR_FWMARK, svc->fwmark); |
| 2756 | } else { |
| 2757 | NLA_PUT_U16(skb, IPVS_SVC_ATTR_PROTOCOL, svc->protocol); |
| 2758 | NLA_PUT(skb, IPVS_SVC_ATTR_ADDR, sizeof(svc->addr), &svc->addr); |
| 2759 | NLA_PUT_U16(skb, IPVS_SVC_ATTR_PORT, svc->port); |
| 2760 | } |
| 2761 | |
| 2762 | NLA_PUT_STRING(skb, IPVS_SVC_ATTR_SCHED_NAME, svc->scheduler->name); |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 2763 | if (svc->pe) |
| 2764 | NLA_PUT_STRING(skb, IPVS_SVC_ATTR_PE_NAME, svc->pe->name); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2765 | NLA_PUT(skb, IPVS_SVC_ATTR_FLAGS, sizeof(flags), &flags); |
| 2766 | NLA_PUT_U32(skb, IPVS_SVC_ATTR_TIMEOUT, svc->timeout / HZ); |
| 2767 | NLA_PUT_U32(skb, IPVS_SVC_ATTR_NETMASK, svc->netmask); |
| 2768 | |
| 2769 | if (ip_vs_genl_fill_stats(skb, IPVS_SVC_ATTR_STATS, &svc->stats)) |
| 2770 | goto nla_put_failure; |
| 2771 | |
| 2772 | nla_nest_end(skb, nl_service); |
| 2773 | |
| 2774 | return 0; |
| 2775 | |
| 2776 | nla_put_failure: |
| 2777 | nla_nest_cancel(skb, nl_service); |
| 2778 | return -EMSGSIZE; |
| 2779 | } |
| 2780 | |
| 2781 | static int ip_vs_genl_dump_service(struct sk_buff *skb, |
| 2782 | struct ip_vs_service *svc, |
| 2783 | struct netlink_callback *cb) |
| 2784 | { |
| 2785 | void *hdr; |
| 2786 | |
| 2787 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq, |
| 2788 | &ip_vs_genl_family, NLM_F_MULTI, |
| 2789 | IPVS_CMD_NEW_SERVICE); |
| 2790 | if (!hdr) |
| 2791 | return -EMSGSIZE; |
| 2792 | |
| 2793 | if (ip_vs_genl_fill_service(skb, svc) < 0) |
| 2794 | goto nla_put_failure; |
| 2795 | |
| 2796 | return genlmsg_end(skb, hdr); |
| 2797 | |
| 2798 | nla_put_failure: |
| 2799 | genlmsg_cancel(skb, hdr); |
| 2800 | return -EMSGSIZE; |
| 2801 | } |
| 2802 | |
| 2803 | static int ip_vs_genl_dump_services(struct sk_buff *skb, |
| 2804 | struct netlink_callback *cb) |
| 2805 | { |
| 2806 | int idx = 0, i; |
| 2807 | int start = cb->args[0]; |
| 2808 | struct ip_vs_service *svc; |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2809 | struct net *net = skb_sknet(skb); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2810 | |
| 2811 | mutex_lock(&__ip_vs_mutex); |
| 2812 | for (i = 0; i < IP_VS_SVC_TAB_SIZE; i++) { |
| 2813 | list_for_each_entry(svc, &ip_vs_svc_table[i], s_list) { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2814 | if (++idx <= start || !net_eq(svc->net, net)) |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2815 | continue; |
| 2816 | if (ip_vs_genl_dump_service(skb, svc, cb) < 0) { |
| 2817 | idx--; |
| 2818 | goto nla_put_failure; |
| 2819 | } |
| 2820 | } |
| 2821 | } |
| 2822 | |
| 2823 | for (i = 0; i < IP_VS_SVC_TAB_SIZE; i++) { |
| 2824 | list_for_each_entry(svc, &ip_vs_svc_fwm_table[i], f_list) { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2825 | if (++idx <= start || !net_eq(svc->net, net)) |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2826 | continue; |
| 2827 | if (ip_vs_genl_dump_service(skb, svc, cb) < 0) { |
| 2828 | idx--; |
| 2829 | goto nla_put_failure; |
| 2830 | } |
| 2831 | } |
| 2832 | } |
| 2833 | |
| 2834 | nla_put_failure: |
| 2835 | mutex_unlock(&__ip_vs_mutex); |
| 2836 | cb->args[0] = idx; |
| 2837 | |
| 2838 | return skb->len; |
| 2839 | } |
| 2840 | |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2841 | static int ip_vs_genl_parse_service(struct net *net, |
| 2842 | struct ip_vs_service_user_kern *usvc, |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 2843 | struct nlattr *nla, int full_entry, |
| 2844 | struct ip_vs_service **ret_svc) |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2845 | { |
| 2846 | struct nlattr *attrs[IPVS_SVC_ATTR_MAX + 1]; |
| 2847 | struct nlattr *nla_af, *nla_port, *nla_fwmark, *nla_protocol, *nla_addr; |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 2848 | struct ip_vs_service *svc; |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2849 | |
| 2850 | /* Parse mandatory identifying service fields first */ |
| 2851 | if (nla == NULL || |
| 2852 | nla_parse_nested(attrs, IPVS_SVC_ATTR_MAX, nla, ip_vs_svc_policy)) |
| 2853 | return -EINVAL; |
| 2854 | |
| 2855 | nla_af = attrs[IPVS_SVC_ATTR_AF]; |
| 2856 | nla_protocol = attrs[IPVS_SVC_ATTR_PROTOCOL]; |
| 2857 | nla_addr = attrs[IPVS_SVC_ATTR_ADDR]; |
| 2858 | nla_port = attrs[IPVS_SVC_ATTR_PORT]; |
| 2859 | nla_fwmark = attrs[IPVS_SVC_ATTR_FWMARK]; |
| 2860 | |
| 2861 | if (!(nla_af && (nla_fwmark || (nla_port && nla_protocol && nla_addr)))) |
| 2862 | return -EINVAL; |
| 2863 | |
Simon Horman | 258c889 | 2009-12-15 17:01:25 +0100 | [diff] [blame] | 2864 | memset(usvc, 0, sizeof(*usvc)); |
| 2865 | |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 2866 | usvc->af = nla_get_u16(nla_af); |
Julius Volz | f94fd04 | 2008-09-02 15:55:55 +0200 | [diff] [blame] | 2867 | #ifdef CONFIG_IP_VS_IPV6 |
| 2868 | if (usvc->af != AF_INET && usvc->af != AF_INET6) |
| 2869 | #else |
| 2870 | if (usvc->af != AF_INET) |
| 2871 | #endif |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2872 | return -EAFNOSUPPORT; |
| 2873 | |
| 2874 | if (nla_fwmark) { |
| 2875 | usvc->protocol = IPPROTO_TCP; |
| 2876 | usvc->fwmark = nla_get_u32(nla_fwmark); |
| 2877 | } else { |
| 2878 | usvc->protocol = nla_get_u16(nla_protocol); |
| 2879 | nla_memcpy(&usvc->addr, nla_addr, sizeof(usvc->addr)); |
| 2880 | usvc->port = nla_get_u16(nla_port); |
| 2881 | usvc->fwmark = 0; |
| 2882 | } |
| 2883 | |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 2884 | if (usvc->fwmark) |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2885 | svc = __ip_vs_svc_fwm_find(net, usvc->af, usvc->fwmark); |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 2886 | else |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2887 | svc = __ip_vs_service_find(net, usvc->af, usvc->protocol, |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 2888 | &usvc->addr, usvc->port); |
| 2889 | *ret_svc = svc; |
| 2890 | |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2891 | /* If a full entry was requested, check for the additional fields */ |
| 2892 | if (full_entry) { |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 2893 | struct nlattr *nla_sched, *nla_flags, *nla_pe, *nla_timeout, |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2894 | *nla_netmask; |
| 2895 | struct ip_vs_flags flags; |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2896 | |
| 2897 | nla_sched = attrs[IPVS_SVC_ATTR_SCHED_NAME]; |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 2898 | nla_pe = attrs[IPVS_SVC_ATTR_PE_NAME]; |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2899 | nla_flags = attrs[IPVS_SVC_ATTR_FLAGS]; |
| 2900 | nla_timeout = attrs[IPVS_SVC_ATTR_TIMEOUT]; |
| 2901 | nla_netmask = attrs[IPVS_SVC_ATTR_NETMASK]; |
| 2902 | |
| 2903 | if (!(nla_sched && nla_flags && nla_timeout && nla_netmask)) |
| 2904 | return -EINVAL; |
| 2905 | |
| 2906 | nla_memcpy(&flags, nla_flags, sizeof(flags)); |
| 2907 | |
| 2908 | /* prefill flags from service if it already exists */ |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 2909 | if (svc) |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2910 | usvc->flags = svc->flags; |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2911 | |
| 2912 | /* set new flags from userland */ |
| 2913 | usvc->flags = (usvc->flags & ~flags.mask) | |
| 2914 | (flags.flags & flags.mask); |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 2915 | usvc->sched_name = nla_data(nla_sched); |
Simon Horman | 0d1e71b | 2010-08-22 21:37:54 +0900 | [diff] [blame] | 2916 | usvc->pe_name = nla_pe ? nla_data(nla_pe) : NULL; |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2917 | usvc->timeout = nla_get_u32(nla_timeout); |
| 2918 | usvc->netmask = nla_get_u32(nla_netmask); |
| 2919 | } |
| 2920 | |
| 2921 | return 0; |
| 2922 | } |
| 2923 | |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2924 | static struct ip_vs_service *ip_vs_genl_find_service(struct net *net, |
| 2925 | struct nlattr *nla) |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2926 | { |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 2927 | struct ip_vs_service_user_kern usvc; |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 2928 | struct ip_vs_service *svc; |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2929 | int ret; |
| 2930 | |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 2931 | ret = ip_vs_genl_parse_service(net, &usvc, nla, 0, &svc); |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 2932 | return ret ? ERR_PTR(ret) : svc; |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 2933 | } |
| 2934 | |
| 2935 | static int ip_vs_genl_fill_dest(struct sk_buff *skb, struct ip_vs_dest *dest) |
| 2936 | { |
| 2937 | struct nlattr *nl_dest; |
| 2938 | |
| 2939 | nl_dest = nla_nest_start(skb, IPVS_CMD_ATTR_DEST); |
| 2940 | if (!nl_dest) |
| 2941 | return -EMSGSIZE; |
| 2942 | |
| 2943 | NLA_PUT(skb, IPVS_DEST_ATTR_ADDR, sizeof(dest->addr), &dest->addr); |
| 2944 | NLA_PUT_U16(skb, IPVS_DEST_ATTR_PORT, dest->port); |
| 2945 | |
| 2946 | NLA_PUT_U32(skb, IPVS_DEST_ATTR_FWD_METHOD, |
| 2947 | atomic_read(&dest->conn_flags) & IP_VS_CONN_F_FWD_MASK); |
| 2948 | NLA_PUT_U32(skb, IPVS_DEST_ATTR_WEIGHT, atomic_read(&dest->weight)); |
| 2949 | NLA_PUT_U32(skb, IPVS_DEST_ATTR_U_THRESH, dest->u_threshold); |
| 2950 | NLA_PUT_U32(skb, IPVS_DEST_ATTR_L_THRESH, dest->l_threshold); |
| 2951 | NLA_PUT_U32(skb, IPVS_DEST_ATTR_ACTIVE_CONNS, |
| 2952 | atomic_read(&dest->activeconns)); |
| 2953 | NLA_PUT_U32(skb, IPVS_DEST_ATTR_INACT_CONNS, |
| 2954 | atomic_read(&dest->inactconns)); |
| 2955 | NLA_PUT_U32(skb, IPVS_DEST_ATTR_PERSIST_CONNS, |
| 2956 | atomic_read(&dest->persistconns)); |
| 2957 | |
| 2958 | if (ip_vs_genl_fill_stats(skb, IPVS_DEST_ATTR_STATS, &dest->stats)) |
| 2959 | goto nla_put_failure; |
| 2960 | |
| 2961 | nla_nest_end(skb, nl_dest); |
| 2962 | |
| 2963 | return 0; |
| 2964 | |
| 2965 | nla_put_failure: |
| 2966 | nla_nest_cancel(skb, nl_dest); |
| 2967 | return -EMSGSIZE; |
| 2968 | } |
| 2969 | |
| 2970 | static int ip_vs_genl_dump_dest(struct sk_buff *skb, struct ip_vs_dest *dest, |
| 2971 | struct netlink_callback *cb) |
| 2972 | { |
| 2973 | void *hdr; |
| 2974 | |
| 2975 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq, |
| 2976 | &ip_vs_genl_family, NLM_F_MULTI, |
| 2977 | IPVS_CMD_NEW_DEST); |
| 2978 | if (!hdr) |
| 2979 | return -EMSGSIZE; |
| 2980 | |
| 2981 | if (ip_vs_genl_fill_dest(skb, dest) < 0) |
| 2982 | goto nla_put_failure; |
| 2983 | |
| 2984 | return genlmsg_end(skb, hdr); |
| 2985 | |
| 2986 | nla_put_failure: |
| 2987 | genlmsg_cancel(skb, hdr); |
| 2988 | return -EMSGSIZE; |
| 2989 | } |
| 2990 | |
| 2991 | static int ip_vs_genl_dump_dests(struct sk_buff *skb, |
| 2992 | struct netlink_callback *cb) |
| 2993 | { |
| 2994 | int idx = 0; |
| 2995 | int start = cb->args[0]; |
| 2996 | struct ip_vs_service *svc; |
| 2997 | struct ip_vs_dest *dest; |
| 2998 | struct nlattr *attrs[IPVS_CMD_ATTR_MAX + 1]; |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 2999 | struct net *net = skb_sknet(skb); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3000 | |
| 3001 | mutex_lock(&__ip_vs_mutex); |
| 3002 | |
| 3003 | /* Try to find the service for which to dump destinations */ |
| 3004 | if (nlmsg_parse(cb->nlh, GENL_HDRLEN, attrs, |
| 3005 | IPVS_CMD_ATTR_MAX, ip_vs_cmd_policy)) |
| 3006 | goto out_err; |
| 3007 | |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 3008 | |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 3009 | svc = ip_vs_genl_find_service(net, attrs[IPVS_CMD_ATTR_SERVICE]); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3010 | if (IS_ERR(svc) || svc == NULL) |
| 3011 | goto out_err; |
| 3012 | |
| 3013 | /* Dump the destinations */ |
| 3014 | list_for_each_entry(dest, &svc->destinations, n_list) { |
| 3015 | if (++idx <= start) |
| 3016 | continue; |
| 3017 | if (ip_vs_genl_dump_dest(skb, dest, cb) < 0) { |
| 3018 | idx--; |
| 3019 | goto nla_put_failure; |
| 3020 | } |
| 3021 | } |
| 3022 | |
| 3023 | nla_put_failure: |
| 3024 | cb->args[0] = idx; |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3025 | |
| 3026 | out_err: |
| 3027 | mutex_unlock(&__ip_vs_mutex); |
| 3028 | |
| 3029 | return skb->len; |
| 3030 | } |
| 3031 | |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 3032 | static int ip_vs_genl_parse_dest(struct ip_vs_dest_user_kern *udest, |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3033 | struct nlattr *nla, int full_entry) |
| 3034 | { |
| 3035 | struct nlattr *attrs[IPVS_DEST_ATTR_MAX + 1]; |
| 3036 | struct nlattr *nla_addr, *nla_port; |
| 3037 | |
| 3038 | /* Parse mandatory identifying destination fields first */ |
| 3039 | if (nla == NULL || |
| 3040 | nla_parse_nested(attrs, IPVS_DEST_ATTR_MAX, nla, ip_vs_dest_policy)) |
| 3041 | return -EINVAL; |
| 3042 | |
| 3043 | nla_addr = attrs[IPVS_DEST_ATTR_ADDR]; |
| 3044 | nla_port = attrs[IPVS_DEST_ATTR_PORT]; |
| 3045 | |
| 3046 | if (!(nla_addr && nla_port)) |
| 3047 | return -EINVAL; |
| 3048 | |
Simon Horman | 258c889 | 2009-12-15 17:01:25 +0100 | [diff] [blame] | 3049 | memset(udest, 0, sizeof(*udest)); |
| 3050 | |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3051 | nla_memcpy(&udest->addr, nla_addr, sizeof(udest->addr)); |
| 3052 | udest->port = nla_get_u16(nla_port); |
| 3053 | |
| 3054 | /* If a full entry was requested, check for the additional fields */ |
| 3055 | if (full_entry) { |
| 3056 | struct nlattr *nla_fwd, *nla_weight, *nla_u_thresh, |
| 3057 | *nla_l_thresh; |
| 3058 | |
| 3059 | nla_fwd = attrs[IPVS_DEST_ATTR_FWD_METHOD]; |
| 3060 | nla_weight = attrs[IPVS_DEST_ATTR_WEIGHT]; |
| 3061 | nla_u_thresh = attrs[IPVS_DEST_ATTR_U_THRESH]; |
| 3062 | nla_l_thresh = attrs[IPVS_DEST_ATTR_L_THRESH]; |
| 3063 | |
| 3064 | if (!(nla_fwd && nla_weight && nla_u_thresh && nla_l_thresh)) |
| 3065 | return -EINVAL; |
| 3066 | |
| 3067 | udest->conn_flags = nla_get_u32(nla_fwd) |
| 3068 | & IP_VS_CONN_F_FWD_MASK; |
| 3069 | udest->weight = nla_get_u32(nla_weight); |
| 3070 | udest->u_threshold = nla_get_u32(nla_u_thresh); |
| 3071 | udest->l_threshold = nla_get_u32(nla_l_thresh); |
| 3072 | } |
| 3073 | |
| 3074 | return 0; |
| 3075 | } |
| 3076 | |
| 3077 | static int ip_vs_genl_fill_daemon(struct sk_buff *skb, __be32 state, |
| 3078 | const char *mcast_ifn, __be32 syncid) |
| 3079 | { |
| 3080 | struct nlattr *nl_daemon; |
| 3081 | |
| 3082 | nl_daemon = nla_nest_start(skb, IPVS_CMD_ATTR_DAEMON); |
| 3083 | if (!nl_daemon) |
| 3084 | return -EMSGSIZE; |
| 3085 | |
| 3086 | NLA_PUT_U32(skb, IPVS_DAEMON_ATTR_STATE, state); |
| 3087 | NLA_PUT_STRING(skb, IPVS_DAEMON_ATTR_MCAST_IFN, mcast_ifn); |
| 3088 | NLA_PUT_U32(skb, IPVS_DAEMON_ATTR_SYNC_ID, syncid); |
| 3089 | |
| 3090 | nla_nest_end(skb, nl_daemon); |
| 3091 | |
| 3092 | return 0; |
| 3093 | |
| 3094 | nla_put_failure: |
| 3095 | nla_nest_cancel(skb, nl_daemon); |
| 3096 | return -EMSGSIZE; |
| 3097 | } |
| 3098 | |
| 3099 | static int ip_vs_genl_dump_daemon(struct sk_buff *skb, __be32 state, |
| 3100 | const char *mcast_ifn, __be32 syncid, |
| 3101 | struct netlink_callback *cb) |
| 3102 | { |
| 3103 | void *hdr; |
| 3104 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq, |
| 3105 | &ip_vs_genl_family, NLM_F_MULTI, |
| 3106 | IPVS_CMD_NEW_DAEMON); |
| 3107 | if (!hdr) |
| 3108 | return -EMSGSIZE; |
| 3109 | |
| 3110 | if (ip_vs_genl_fill_daemon(skb, state, mcast_ifn, syncid)) |
| 3111 | goto nla_put_failure; |
| 3112 | |
| 3113 | return genlmsg_end(skb, hdr); |
| 3114 | |
| 3115 | nla_put_failure: |
| 3116 | genlmsg_cancel(skb, hdr); |
| 3117 | return -EMSGSIZE; |
| 3118 | } |
| 3119 | |
| 3120 | static int ip_vs_genl_dump_daemons(struct sk_buff *skb, |
| 3121 | struct netlink_callback *cb) |
| 3122 | { |
Hans Schillstrom | a09d197 | 2011-04-04 15:25:18 +0200 | [diff] [blame^] | 3123 | struct net *net = skb_sknet(skb); |
Hans Schillstrom | f131315 | 2011-01-03 14:44:55 +0100 | [diff] [blame] | 3124 | struct netns_ipvs *ipvs = net_ipvs(net); |
| 3125 | |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3126 | mutex_lock(&__ip_vs_mutex); |
Hans Schillstrom | f131315 | 2011-01-03 14:44:55 +0100 | [diff] [blame] | 3127 | if ((ipvs->sync_state & IP_VS_STATE_MASTER) && !cb->args[0]) { |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3128 | if (ip_vs_genl_dump_daemon(skb, IP_VS_STATE_MASTER, |
Hans Schillstrom | f131315 | 2011-01-03 14:44:55 +0100 | [diff] [blame] | 3129 | ipvs->master_mcast_ifn, |
| 3130 | ipvs->master_syncid, cb) < 0) |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3131 | goto nla_put_failure; |
| 3132 | |
| 3133 | cb->args[0] = 1; |
| 3134 | } |
| 3135 | |
Hans Schillstrom | f131315 | 2011-01-03 14:44:55 +0100 | [diff] [blame] | 3136 | if ((ipvs->sync_state & IP_VS_STATE_BACKUP) && !cb->args[1]) { |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3137 | if (ip_vs_genl_dump_daemon(skb, IP_VS_STATE_BACKUP, |
Hans Schillstrom | f131315 | 2011-01-03 14:44:55 +0100 | [diff] [blame] | 3138 | ipvs->backup_mcast_ifn, |
| 3139 | ipvs->backup_syncid, cb) < 0) |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3140 | goto nla_put_failure; |
| 3141 | |
| 3142 | cb->args[1] = 1; |
| 3143 | } |
| 3144 | |
| 3145 | nla_put_failure: |
| 3146 | mutex_unlock(&__ip_vs_mutex); |
| 3147 | |
| 3148 | return skb->len; |
| 3149 | } |
| 3150 | |
Hans Schillstrom | f131315 | 2011-01-03 14:44:55 +0100 | [diff] [blame] | 3151 | static int ip_vs_genl_new_daemon(struct net *net, struct nlattr **attrs) |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3152 | { |
| 3153 | if (!(attrs[IPVS_DAEMON_ATTR_STATE] && |
| 3154 | attrs[IPVS_DAEMON_ATTR_MCAST_IFN] && |
| 3155 | attrs[IPVS_DAEMON_ATTR_SYNC_ID])) |
| 3156 | return -EINVAL; |
| 3157 | |
Hans Schillstrom | f131315 | 2011-01-03 14:44:55 +0100 | [diff] [blame] | 3158 | return start_sync_thread(net, |
| 3159 | nla_get_u32(attrs[IPVS_DAEMON_ATTR_STATE]), |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3160 | nla_data(attrs[IPVS_DAEMON_ATTR_MCAST_IFN]), |
| 3161 | nla_get_u32(attrs[IPVS_DAEMON_ATTR_SYNC_ID])); |
| 3162 | } |
| 3163 | |
Hans Schillstrom | f131315 | 2011-01-03 14:44:55 +0100 | [diff] [blame] | 3164 | static int ip_vs_genl_del_daemon(struct net *net, struct nlattr **attrs) |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3165 | { |
| 3166 | if (!attrs[IPVS_DAEMON_ATTR_STATE]) |
| 3167 | return -EINVAL; |
| 3168 | |
Hans Schillstrom | f131315 | 2011-01-03 14:44:55 +0100 | [diff] [blame] | 3169 | return stop_sync_thread(net, |
| 3170 | nla_get_u32(attrs[IPVS_DAEMON_ATTR_STATE])); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3171 | } |
| 3172 | |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 3173 | static int ip_vs_genl_set_config(struct net *net, struct nlattr **attrs) |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3174 | { |
| 3175 | struct ip_vs_timeout_user t; |
| 3176 | |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 3177 | __ip_vs_get_timeouts(net, &t); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3178 | |
| 3179 | if (attrs[IPVS_CMD_ATTR_TIMEOUT_TCP]) |
| 3180 | t.tcp_timeout = nla_get_u32(attrs[IPVS_CMD_ATTR_TIMEOUT_TCP]); |
| 3181 | |
| 3182 | if (attrs[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN]) |
| 3183 | t.tcp_fin_timeout = |
| 3184 | nla_get_u32(attrs[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN]); |
| 3185 | |
| 3186 | if (attrs[IPVS_CMD_ATTR_TIMEOUT_UDP]) |
| 3187 | t.udp_timeout = nla_get_u32(attrs[IPVS_CMD_ATTR_TIMEOUT_UDP]); |
| 3188 | |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 3189 | return ip_vs_set_timeout(net, &t); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3190 | } |
| 3191 | |
| 3192 | static int ip_vs_genl_set_cmd(struct sk_buff *skb, struct genl_info *info) |
| 3193 | { |
| 3194 | struct ip_vs_service *svc = NULL; |
Julius Volz | c860c6b | 2008-09-02 15:55:36 +0200 | [diff] [blame] | 3195 | struct ip_vs_service_user_kern usvc; |
| 3196 | struct ip_vs_dest_user_kern udest; |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3197 | int ret = 0, cmd; |
| 3198 | int need_full_svc = 0, need_full_dest = 0; |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 3199 | struct net *net; |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 3200 | struct netns_ipvs *ipvs; |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3201 | |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 3202 | net = skb_sknet(skb); |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 3203 | ipvs = net_ipvs(net); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3204 | cmd = info->genlhdr->cmd; |
| 3205 | |
| 3206 | mutex_lock(&__ip_vs_mutex); |
| 3207 | |
| 3208 | if (cmd == IPVS_CMD_FLUSH) { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 3209 | ret = ip_vs_flush(net); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3210 | goto out; |
| 3211 | } else if (cmd == IPVS_CMD_SET_CONFIG) { |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 3212 | ret = ip_vs_genl_set_config(net, info->attrs); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3213 | goto out; |
| 3214 | } else if (cmd == IPVS_CMD_NEW_DAEMON || |
| 3215 | cmd == IPVS_CMD_DEL_DAEMON) { |
| 3216 | |
| 3217 | struct nlattr *daemon_attrs[IPVS_DAEMON_ATTR_MAX + 1]; |
| 3218 | |
| 3219 | if (!info->attrs[IPVS_CMD_ATTR_DAEMON] || |
| 3220 | nla_parse_nested(daemon_attrs, IPVS_DAEMON_ATTR_MAX, |
| 3221 | info->attrs[IPVS_CMD_ATTR_DAEMON], |
| 3222 | ip_vs_daemon_policy)) { |
| 3223 | ret = -EINVAL; |
| 3224 | goto out; |
| 3225 | } |
| 3226 | |
| 3227 | if (cmd == IPVS_CMD_NEW_DAEMON) |
Hans Schillstrom | f131315 | 2011-01-03 14:44:55 +0100 | [diff] [blame] | 3228 | ret = ip_vs_genl_new_daemon(net, daemon_attrs); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3229 | else |
Hans Schillstrom | f131315 | 2011-01-03 14:44:55 +0100 | [diff] [blame] | 3230 | ret = ip_vs_genl_del_daemon(net, daemon_attrs); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3231 | goto out; |
| 3232 | } else if (cmd == IPVS_CMD_ZERO && |
| 3233 | !info->attrs[IPVS_CMD_ATTR_SERVICE]) { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 3234 | ret = ip_vs_zero_all(net); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3235 | goto out; |
| 3236 | } |
| 3237 | |
| 3238 | /* All following commands require a service argument, so check if we |
| 3239 | * received a valid one. We need a full service specification when |
| 3240 | * adding / editing a service. Only identifying members otherwise. */ |
| 3241 | if (cmd == IPVS_CMD_NEW_SERVICE || cmd == IPVS_CMD_SET_SERVICE) |
| 3242 | need_full_svc = 1; |
| 3243 | |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 3244 | ret = ip_vs_genl_parse_service(net, &usvc, |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3245 | info->attrs[IPVS_CMD_ATTR_SERVICE], |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 3246 | need_full_svc, &svc); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3247 | if (ret) |
| 3248 | goto out; |
| 3249 | |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3250 | /* Unless we're adding a new service, the service must already exist */ |
| 3251 | if ((cmd != IPVS_CMD_NEW_SERVICE) && (svc == NULL)) { |
| 3252 | ret = -ESRCH; |
| 3253 | goto out; |
| 3254 | } |
| 3255 | |
| 3256 | /* Destination commands require a valid destination argument. For |
| 3257 | * adding / editing a destination, we need a full destination |
| 3258 | * specification. */ |
| 3259 | if (cmd == IPVS_CMD_NEW_DEST || cmd == IPVS_CMD_SET_DEST || |
| 3260 | cmd == IPVS_CMD_DEL_DEST) { |
| 3261 | if (cmd != IPVS_CMD_DEL_DEST) |
| 3262 | need_full_dest = 1; |
| 3263 | |
| 3264 | ret = ip_vs_genl_parse_dest(&udest, |
| 3265 | info->attrs[IPVS_CMD_ATTR_DEST], |
| 3266 | need_full_dest); |
| 3267 | if (ret) |
| 3268 | goto out; |
| 3269 | } |
| 3270 | |
| 3271 | switch (cmd) { |
| 3272 | case IPVS_CMD_NEW_SERVICE: |
| 3273 | if (svc == NULL) |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 3274 | ret = ip_vs_add_service(net, &usvc, &svc); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3275 | else |
| 3276 | ret = -EEXIST; |
| 3277 | break; |
| 3278 | case IPVS_CMD_SET_SERVICE: |
| 3279 | ret = ip_vs_edit_service(svc, &usvc); |
| 3280 | break; |
| 3281 | case IPVS_CMD_DEL_SERVICE: |
| 3282 | ret = ip_vs_del_service(svc); |
Julian Anastasov | 26c15cf | 2010-09-21 18:12:30 +0200 | [diff] [blame] | 3283 | /* do not use svc, it can be freed */ |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3284 | break; |
| 3285 | case IPVS_CMD_NEW_DEST: |
| 3286 | ret = ip_vs_add_dest(svc, &udest); |
| 3287 | break; |
| 3288 | case IPVS_CMD_SET_DEST: |
| 3289 | ret = ip_vs_edit_dest(svc, &udest); |
| 3290 | break; |
| 3291 | case IPVS_CMD_DEL_DEST: |
| 3292 | ret = ip_vs_del_dest(svc, &udest); |
| 3293 | break; |
| 3294 | case IPVS_CMD_ZERO: |
| 3295 | ret = ip_vs_zero_service(svc); |
| 3296 | break; |
| 3297 | default: |
| 3298 | ret = -EINVAL; |
| 3299 | } |
| 3300 | |
| 3301 | out: |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3302 | mutex_unlock(&__ip_vs_mutex); |
| 3303 | |
| 3304 | return ret; |
| 3305 | } |
| 3306 | |
| 3307 | static int ip_vs_genl_get_cmd(struct sk_buff *skb, struct genl_info *info) |
| 3308 | { |
| 3309 | struct sk_buff *msg; |
| 3310 | void *reply; |
| 3311 | int ret, cmd, reply_cmd; |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 3312 | struct net *net; |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 3313 | struct netns_ipvs *ipvs; |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3314 | |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 3315 | net = skb_sknet(skb); |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 3316 | ipvs = net_ipvs(net); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3317 | cmd = info->genlhdr->cmd; |
| 3318 | |
| 3319 | if (cmd == IPVS_CMD_GET_SERVICE) |
| 3320 | reply_cmd = IPVS_CMD_NEW_SERVICE; |
| 3321 | else if (cmd == IPVS_CMD_GET_INFO) |
| 3322 | reply_cmd = IPVS_CMD_SET_INFO; |
| 3323 | else if (cmd == IPVS_CMD_GET_CONFIG) |
| 3324 | reply_cmd = IPVS_CMD_SET_CONFIG; |
| 3325 | else { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 3326 | pr_err("unknown Generic Netlink command\n"); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3327 | return -EINVAL; |
| 3328 | } |
| 3329 | |
| 3330 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 3331 | if (!msg) |
| 3332 | return -ENOMEM; |
| 3333 | |
| 3334 | mutex_lock(&__ip_vs_mutex); |
| 3335 | |
| 3336 | reply = genlmsg_put_reply(msg, info, &ip_vs_genl_family, 0, reply_cmd); |
| 3337 | if (reply == NULL) |
| 3338 | goto nla_put_failure; |
| 3339 | |
| 3340 | switch (cmd) { |
| 3341 | case IPVS_CMD_GET_SERVICE: |
| 3342 | { |
| 3343 | struct ip_vs_service *svc; |
| 3344 | |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 3345 | svc = ip_vs_genl_find_service(net, |
| 3346 | info->attrs[IPVS_CMD_ATTR_SERVICE]); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3347 | if (IS_ERR(svc)) { |
| 3348 | ret = PTR_ERR(svc); |
| 3349 | goto out_err; |
| 3350 | } else if (svc) { |
| 3351 | ret = ip_vs_genl_fill_service(msg, svc); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3352 | if (ret) |
| 3353 | goto nla_put_failure; |
| 3354 | } else { |
| 3355 | ret = -ESRCH; |
| 3356 | goto out_err; |
| 3357 | } |
| 3358 | |
| 3359 | break; |
| 3360 | } |
| 3361 | |
| 3362 | case IPVS_CMD_GET_CONFIG: |
| 3363 | { |
| 3364 | struct ip_vs_timeout_user t; |
| 3365 | |
Hans Schillstrom | 9330419 | 2011-01-03 14:44:51 +0100 | [diff] [blame] | 3366 | __ip_vs_get_timeouts(net, &t); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3367 | #ifdef CONFIG_IP_VS_PROTO_TCP |
| 3368 | NLA_PUT_U32(msg, IPVS_CMD_ATTR_TIMEOUT_TCP, t.tcp_timeout); |
| 3369 | NLA_PUT_U32(msg, IPVS_CMD_ATTR_TIMEOUT_TCP_FIN, |
| 3370 | t.tcp_fin_timeout); |
| 3371 | #endif |
| 3372 | #ifdef CONFIG_IP_VS_PROTO_UDP |
| 3373 | NLA_PUT_U32(msg, IPVS_CMD_ATTR_TIMEOUT_UDP, t.udp_timeout); |
| 3374 | #endif |
| 3375 | |
| 3376 | break; |
| 3377 | } |
| 3378 | |
| 3379 | case IPVS_CMD_GET_INFO: |
| 3380 | NLA_PUT_U32(msg, IPVS_INFO_ATTR_VERSION, IP_VS_VERSION_CODE); |
| 3381 | NLA_PUT_U32(msg, IPVS_INFO_ATTR_CONN_TAB_SIZE, |
Catalin(ux) M. BOIE | 6f7edb4 | 2010-01-05 05:50:24 +0100 | [diff] [blame] | 3382 | ip_vs_conn_tab_size); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3383 | break; |
| 3384 | } |
| 3385 | |
| 3386 | genlmsg_end(msg, reply); |
Johannes Berg | 134e637 | 2009-07-10 09:51:34 +0000 | [diff] [blame] | 3387 | ret = genlmsg_reply(msg, info); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3388 | goto out; |
| 3389 | |
| 3390 | nla_put_failure: |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 3391 | pr_err("not enough space in Netlink message\n"); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3392 | ret = -EMSGSIZE; |
| 3393 | |
| 3394 | out_err: |
| 3395 | nlmsg_free(msg); |
| 3396 | out: |
| 3397 | mutex_unlock(&__ip_vs_mutex); |
| 3398 | |
| 3399 | return ret; |
| 3400 | } |
| 3401 | |
| 3402 | |
| 3403 | static struct genl_ops ip_vs_genl_ops[] __read_mostly = { |
| 3404 | { |
| 3405 | .cmd = IPVS_CMD_NEW_SERVICE, |
| 3406 | .flags = GENL_ADMIN_PERM, |
| 3407 | .policy = ip_vs_cmd_policy, |
| 3408 | .doit = ip_vs_genl_set_cmd, |
| 3409 | }, |
| 3410 | { |
| 3411 | .cmd = IPVS_CMD_SET_SERVICE, |
| 3412 | .flags = GENL_ADMIN_PERM, |
| 3413 | .policy = ip_vs_cmd_policy, |
| 3414 | .doit = ip_vs_genl_set_cmd, |
| 3415 | }, |
| 3416 | { |
| 3417 | .cmd = IPVS_CMD_DEL_SERVICE, |
| 3418 | .flags = GENL_ADMIN_PERM, |
| 3419 | .policy = ip_vs_cmd_policy, |
| 3420 | .doit = ip_vs_genl_set_cmd, |
| 3421 | }, |
| 3422 | { |
| 3423 | .cmd = IPVS_CMD_GET_SERVICE, |
| 3424 | .flags = GENL_ADMIN_PERM, |
| 3425 | .doit = ip_vs_genl_get_cmd, |
| 3426 | .dumpit = ip_vs_genl_dump_services, |
| 3427 | .policy = ip_vs_cmd_policy, |
| 3428 | }, |
| 3429 | { |
| 3430 | .cmd = IPVS_CMD_NEW_DEST, |
| 3431 | .flags = GENL_ADMIN_PERM, |
| 3432 | .policy = ip_vs_cmd_policy, |
| 3433 | .doit = ip_vs_genl_set_cmd, |
| 3434 | }, |
| 3435 | { |
| 3436 | .cmd = IPVS_CMD_SET_DEST, |
| 3437 | .flags = GENL_ADMIN_PERM, |
| 3438 | .policy = ip_vs_cmd_policy, |
| 3439 | .doit = ip_vs_genl_set_cmd, |
| 3440 | }, |
| 3441 | { |
| 3442 | .cmd = IPVS_CMD_DEL_DEST, |
| 3443 | .flags = GENL_ADMIN_PERM, |
| 3444 | .policy = ip_vs_cmd_policy, |
| 3445 | .doit = ip_vs_genl_set_cmd, |
| 3446 | }, |
| 3447 | { |
| 3448 | .cmd = IPVS_CMD_GET_DEST, |
| 3449 | .flags = GENL_ADMIN_PERM, |
| 3450 | .policy = ip_vs_cmd_policy, |
| 3451 | .dumpit = ip_vs_genl_dump_dests, |
| 3452 | }, |
| 3453 | { |
| 3454 | .cmd = IPVS_CMD_NEW_DAEMON, |
| 3455 | .flags = GENL_ADMIN_PERM, |
| 3456 | .policy = ip_vs_cmd_policy, |
| 3457 | .doit = ip_vs_genl_set_cmd, |
| 3458 | }, |
| 3459 | { |
| 3460 | .cmd = IPVS_CMD_DEL_DAEMON, |
| 3461 | .flags = GENL_ADMIN_PERM, |
| 3462 | .policy = ip_vs_cmd_policy, |
| 3463 | .doit = ip_vs_genl_set_cmd, |
| 3464 | }, |
| 3465 | { |
| 3466 | .cmd = IPVS_CMD_GET_DAEMON, |
| 3467 | .flags = GENL_ADMIN_PERM, |
| 3468 | .dumpit = ip_vs_genl_dump_daemons, |
| 3469 | }, |
| 3470 | { |
| 3471 | .cmd = IPVS_CMD_SET_CONFIG, |
| 3472 | .flags = GENL_ADMIN_PERM, |
| 3473 | .policy = ip_vs_cmd_policy, |
| 3474 | .doit = ip_vs_genl_set_cmd, |
| 3475 | }, |
| 3476 | { |
| 3477 | .cmd = IPVS_CMD_GET_CONFIG, |
| 3478 | .flags = GENL_ADMIN_PERM, |
| 3479 | .doit = ip_vs_genl_get_cmd, |
| 3480 | }, |
| 3481 | { |
| 3482 | .cmd = IPVS_CMD_GET_INFO, |
| 3483 | .flags = GENL_ADMIN_PERM, |
| 3484 | .doit = ip_vs_genl_get_cmd, |
| 3485 | }, |
| 3486 | { |
| 3487 | .cmd = IPVS_CMD_ZERO, |
| 3488 | .flags = GENL_ADMIN_PERM, |
| 3489 | .policy = ip_vs_cmd_policy, |
| 3490 | .doit = ip_vs_genl_set_cmd, |
| 3491 | }, |
| 3492 | { |
| 3493 | .cmd = IPVS_CMD_FLUSH, |
| 3494 | .flags = GENL_ADMIN_PERM, |
| 3495 | .doit = ip_vs_genl_set_cmd, |
| 3496 | }, |
| 3497 | }; |
| 3498 | |
| 3499 | static int __init ip_vs_genl_register(void) |
| 3500 | { |
Michał Mirosław | 8f698d5 | 2009-05-21 10:34:05 +0000 | [diff] [blame] | 3501 | return genl_register_family_with_ops(&ip_vs_genl_family, |
| 3502 | ip_vs_genl_ops, ARRAY_SIZE(ip_vs_genl_ops)); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3503 | } |
| 3504 | |
| 3505 | static void ip_vs_genl_unregister(void) |
| 3506 | { |
| 3507 | genl_unregister_family(&ip_vs_genl_family); |
| 3508 | } |
| 3509 | |
| 3510 | /* End of Generic Netlink interface definitions */ |
| 3511 | |
Hans Schillstrom | 61b1ab4 | 2011-01-03 14:44:42 +0100 | [diff] [blame] | 3512 | /* |
| 3513 | * per netns intit/exit func. |
| 3514 | */ |
Simon Horman | 14e4054 | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 3515 | #ifdef CONFIG_SYSCTL |
| 3516 | int __net_init __ip_vs_control_init_sysctl(struct net *net) |
Hans Schillstrom | 61b1ab4 | 2011-01-03 14:44:42 +0100 | [diff] [blame] | 3517 | { |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 3518 | int idx; |
| 3519 | struct netns_ipvs *ipvs = net_ipvs(net); |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 3520 | struct ctl_table *tbl; |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 3521 | |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 3522 | atomic_set(&ipvs->dropentry, 0); |
| 3523 | spin_lock_init(&ipvs->dropentry_lock); |
| 3524 | spin_lock_init(&ipvs->droppacket_lock); |
| 3525 | spin_lock_init(&ipvs->securetcp_lock); |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 3526 | |
| 3527 | if (!net_eq(net, &init_net)) { |
| 3528 | tbl = kmemdup(vs_vars, sizeof(vs_vars), GFP_KERNEL); |
| 3529 | if (tbl == NULL) |
Simon Horman | 14e4054 | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 3530 | return -ENOMEM; |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 3531 | } else |
| 3532 | tbl = vs_vars; |
| 3533 | /* Initialize sysctl defaults */ |
| 3534 | idx = 0; |
| 3535 | ipvs->sysctl_amemthresh = 1024; |
| 3536 | tbl[idx++].data = &ipvs->sysctl_amemthresh; |
| 3537 | ipvs->sysctl_am_droprate = 10; |
| 3538 | tbl[idx++].data = &ipvs->sysctl_am_droprate; |
| 3539 | tbl[idx++].data = &ipvs->sysctl_drop_entry; |
| 3540 | tbl[idx++].data = &ipvs->sysctl_drop_packet; |
| 3541 | #ifdef CONFIG_IP_VS_NFCT |
| 3542 | tbl[idx++].data = &ipvs->sysctl_conntrack; |
| 3543 | #endif |
| 3544 | tbl[idx++].data = &ipvs->sysctl_secure_tcp; |
| 3545 | ipvs->sysctl_snat_reroute = 1; |
| 3546 | tbl[idx++].data = &ipvs->sysctl_snat_reroute; |
| 3547 | ipvs->sysctl_sync_ver = 1; |
| 3548 | tbl[idx++].data = &ipvs->sysctl_sync_ver; |
| 3549 | tbl[idx++].data = &ipvs->sysctl_cache_bypass; |
| 3550 | tbl[idx++].data = &ipvs->sysctl_expire_nodest_conn; |
| 3551 | tbl[idx++].data = &ipvs->sysctl_expire_quiescent_template; |
Simon Horman | 59e0350 | 2011-02-04 18:33:01 +0900 | [diff] [blame] | 3552 | ipvs->sysctl_sync_threshold[0] = DEFAULT_SYNC_THRESHOLD; |
| 3553 | ipvs->sysctl_sync_threshold[1] = DEFAULT_SYNC_PERIOD; |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 3554 | tbl[idx].data = &ipvs->sysctl_sync_threshold; |
| 3555 | tbl[idx++].maxlen = sizeof(ipvs->sysctl_sync_threshold); |
| 3556 | tbl[idx++].data = &ipvs->sysctl_nat_icmp_send; |
| 3557 | |
| 3558 | |
| 3559 | ipvs->sysctl_hdr = register_net_sysctl_table(net, net_vs_ctl_path, |
Hans Schillstrom | 0792470 | 2011-01-24 15:14:41 +0100 | [diff] [blame] | 3560 | tbl); |
Simon Horman | 0443929 | 2011-02-01 18:29:04 +0100 | [diff] [blame] | 3561 | if (ipvs->sysctl_hdr == NULL) { |
| 3562 | if (!net_eq(net, &init_net)) |
| 3563 | kfree(tbl); |
Simon Horman | 14e4054 | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 3564 | return -ENOMEM; |
Simon Horman | 0443929 | 2011-02-01 18:29:04 +0100 | [diff] [blame] | 3565 | } |
Julian Anastasov | 6ef757f | 2011-03-14 01:44:28 +0200 | [diff] [blame] | 3566 | ip_vs_start_estimator(net, &ipvs->tot_stats); |
Hans Schillstrom | a0840e2 | 2011-01-03 14:44:58 +0100 | [diff] [blame] | 3567 | ipvs->sysctl_tbl = tbl; |
Hans Schillstrom | f6340ee | 2011-01-03 14:44:59 +0100 | [diff] [blame] | 3568 | /* Schedule defense work */ |
| 3569 | INIT_DELAYED_WORK(&ipvs->defense_work, defense_work_handler); |
| 3570 | schedule_delayed_work(&ipvs->defense_work, DEFENSE_TIMER_PERIOD); |
Simon Horman | 14e4054 | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 3571 | |
| 3572 | return 0; |
| 3573 | } |
| 3574 | |
| 3575 | void __net_init __ip_vs_control_cleanup_sysctl(struct net *net) |
| 3576 | { |
| 3577 | struct netns_ipvs *ipvs = net_ipvs(net); |
| 3578 | |
| 3579 | cancel_delayed_work_sync(&ipvs->defense_work); |
| 3580 | cancel_work_sync(&ipvs->defense_work.work); |
| 3581 | unregister_net_sysctl_table(ipvs->sysctl_hdr); |
| 3582 | } |
| 3583 | |
| 3584 | #else |
| 3585 | |
| 3586 | int __net_init __ip_vs_control_init_sysctl(struct net *net) { return 0; } |
| 3587 | void __net_init __ip_vs_control_cleanup_sysctl(struct net *net) { } |
| 3588 | |
| 3589 | #endif |
| 3590 | |
| 3591 | int __net_init __ip_vs_control_init(struct net *net) |
| 3592 | { |
| 3593 | int idx; |
| 3594 | struct netns_ipvs *ipvs = net_ipvs(net); |
| 3595 | |
| 3596 | ipvs->rs_lock = __RW_LOCK_UNLOCKED(ipvs->rs_lock); |
| 3597 | |
| 3598 | /* Initialize rs_table */ |
| 3599 | for (idx = 0; idx < IP_VS_RTAB_SIZE; idx++) |
| 3600 | INIT_LIST_HEAD(&ipvs->rs_table[idx]); |
| 3601 | |
| 3602 | INIT_LIST_HEAD(&ipvs->dest_trash); |
| 3603 | atomic_set(&ipvs->ftpsvc_counter, 0); |
| 3604 | atomic_set(&ipvs->nullsvc_counter, 0); |
| 3605 | |
| 3606 | /* procfs stats */ |
| 3607 | ipvs->tot_stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats); |
Eric Dumazet | f40f94f | 2011-03-21 10:15:40 +0000 | [diff] [blame] | 3608 | if (!ipvs->tot_stats.cpustats) { |
Simon Horman | 14e4054 | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 3609 | pr_err("%s(): alloc_percpu.\n", __func__); |
| 3610 | return -ENOMEM; |
| 3611 | } |
| 3612 | spin_lock_init(&ipvs->tot_stats.lock); |
| 3613 | |
| 3614 | proc_net_fops_create(net, "ip_vs", 0, &ip_vs_info_fops); |
| 3615 | proc_net_fops_create(net, "ip_vs_stats", 0, &ip_vs_stats_fops); |
| 3616 | proc_net_fops_create(net, "ip_vs_stats_percpu", 0, |
| 3617 | &ip_vs_stats_percpu_fops); |
| 3618 | |
| 3619 | if (__ip_vs_control_init_sysctl(net)) |
| 3620 | goto err; |
| 3621 | |
Hans Schillstrom | 61b1ab4 | 2011-01-03 14:44:42 +0100 | [diff] [blame] | 3622 | return 0; |
| 3623 | |
Simon Horman | 14e4054 | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 3624 | err: |
Julian Anastasov | 2a0751a | 2011-03-04 12:20:35 +0200 | [diff] [blame] | 3625 | free_percpu(ipvs->tot_stats.cpustats); |
Hans Schillstrom | 61b1ab4 | 2011-01-03 14:44:42 +0100 | [diff] [blame] | 3626 | return -ENOMEM; |
| 3627 | } |
| 3628 | |
| 3629 | static void __net_exit __ip_vs_control_cleanup(struct net *net) |
| 3630 | { |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 3631 | struct netns_ipvs *ipvs = net_ipvs(net); |
| 3632 | |
Hans Schillstrom | f2431e6 | 2011-01-03 14:45:00 +0100 | [diff] [blame] | 3633 | ip_vs_trash_cleanup(net); |
Julian Anastasov | 6ef757f | 2011-03-14 01:44:28 +0200 | [diff] [blame] | 3634 | ip_vs_stop_estimator(net, &ipvs->tot_stats); |
Simon Horman | 14e4054 | 2011-02-04 18:33:02 +0900 | [diff] [blame] | 3635 | __ip_vs_control_cleanup_sysctl(net); |
Hans Schillstrom | b17fc99 | 2011-01-03 14:44:56 +0100 | [diff] [blame] | 3636 | proc_net_remove(net, "ip_vs_stats_percpu"); |
Hans Schillstrom | 61b1ab4 | 2011-01-03 14:44:42 +0100 | [diff] [blame] | 3637 | proc_net_remove(net, "ip_vs_stats"); |
| 3638 | proc_net_remove(net, "ip_vs"); |
Julian Anastasov | 2a0751a | 2011-03-04 12:20:35 +0200 | [diff] [blame] | 3639 | free_percpu(ipvs->tot_stats.cpustats); |
Hans Schillstrom | 61b1ab4 | 2011-01-03 14:44:42 +0100 | [diff] [blame] | 3640 | } |
| 3641 | |
| 3642 | static struct pernet_operations ipvs_control_ops = { |
| 3643 | .init = __ip_vs_control_init, |
| 3644 | .exit = __ip_vs_control_cleanup, |
| 3645 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3646 | |
Sven Wegener | 048cf48 | 2008-08-10 18:24:35 +0000 | [diff] [blame] | 3647 | int __init ip_vs_control_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3648 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3649 | int idx; |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 3650 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3651 | |
| 3652 | EnterFunction(2); |
| 3653 | |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 3654 | /* Initialize svc_table, ip_vs_svc_fwm_table, rs_table */ |
Eduardo Blanco | d86bef7 | 2010-10-19 10:26:47 +0100 | [diff] [blame] | 3655 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { |
| 3656 | INIT_LIST_HEAD(&ip_vs_svc_table[idx]); |
| 3657 | INIT_LIST_HEAD(&ip_vs_svc_fwm_table[idx]); |
| 3658 | } |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 3659 | |
| 3660 | ret = register_pernet_subsys(&ipvs_control_ops); |
| 3661 | if (ret) { |
| 3662 | pr_err("cannot register namespace.\n"); |
| 3663 | goto err; |
Eduardo Blanco | d86bef7 | 2010-10-19 10:26:47 +0100 | [diff] [blame] | 3664 | } |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 3665 | |
| 3666 | smp_wmb(); /* Do we really need it now ? */ |
Eduardo Blanco | d86bef7 | 2010-10-19 10:26:47 +0100 | [diff] [blame] | 3667 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3668 | ret = nf_register_sockopt(&ip_vs_sockopts); |
| 3669 | if (ret) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 3670 | pr_err("cannot register sockopt.\n"); |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 3671 | goto err_net; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3672 | } |
| 3673 | |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3674 | ret = ip_vs_genl_register(); |
| 3675 | if (ret) { |
Hannes Eder | 1e3e238 | 2009-08-02 11:05:41 +0000 | [diff] [blame] | 3676 | pr_err("cannot register Generic Netlink interface.\n"); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3677 | nf_unregister_sockopt(&ip_vs_sockopts); |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 3678 | goto err_net; |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3679 | } |
| 3680 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3681 | LeaveFunction(2); |
| 3682 | return 0; |
Hans Schillstrom | fc72325 | 2011-01-03 14:44:43 +0100 | [diff] [blame] | 3683 | |
| 3684 | err_net: |
| 3685 | unregister_pernet_subsys(&ipvs_control_ops); |
| 3686 | err: |
| 3687 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3688 | } |
| 3689 | |
| 3690 | |
| 3691 | void ip_vs_control_cleanup(void) |
| 3692 | { |
| 3693 | EnterFunction(2); |
Hans Schillstrom | 61b1ab4 | 2011-01-03 14:44:42 +0100 | [diff] [blame] | 3694 | unregister_pernet_subsys(&ipvs_control_ops); |
Julius Volz | 9a81219 | 2008-08-14 14:08:44 +0200 | [diff] [blame] | 3695 | ip_vs_genl_unregister(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3696 | nf_unregister_sockopt(&ip_vs_sockopts); |
| 3697 | LeaveFunction(2); |
| 3698 | } |