diff options
Diffstat (limited to 'ANDROID_3.4.5/include/net/ip_vs.h')
| -rw-r--r-- | ANDROID_3.4.5/include/net/ip_vs.h | 1426 |
1 files changed, 0 insertions, 1426 deletions
diff --git a/ANDROID_3.4.5/include/net/ip_vs.h b/ANDROID_3.4.5/include/net/ip_vs.h deleted file mode 100644 index 72522f08..00000000 --- a/ANDROID_3.4.5/include/net/ip_vs.h +++ /dev/null @@ -1,1426 +0,0 @@ -/* - * IP Virtual Server - * data structure and functionality definitions - */ - -#ifndef _NET_IP_VS_H -#define _NET_IP_VS_H - -#include <linux/ip_vs.h> /* definitions shared with userland */ - -#include <asm/types.h> /* for __uXX types */ - -#include <linux/sysctl.h> /* for ctl_path */ -#include <linux/list.h> /* for struct list_head */ -#include <linux/spinlock.h> /* for struct rwlock_t */ -#include <linux/atomic.h> /* for struct atomic_t */ -#include <linux/compiler.h> -#include <linux/timer.h> -#include <linux/bug.h> - -#include <net/checksum.h> -#include <linux/netfilter.h> /* for union nf_inet_addr */ -#include <linux/ip.h> -#include <linux/ipv6.h> /* for struct ipv6hdr */ -#include <net/ipv6.h> -#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) -#include <net/netfilter/nf_conntrack.h> -#endif -#include <net/net_namespace.h> /* Netw namespace */ - -/* - * Generic access of ipvs struct - */ -static inline struct netns_ipvs *net_ipvs(struct net* net) -{ - return net->ipvs; -} -/* - * Get net ptr from skb in traffic cases - * use skb_sknet when call is from userland (ioctl or netlink) - */ -static inline struct net *skb_net(const struct sk_buff *skb) -{ -#ifdef CONFIG_NET_NS -#ifdef CONFIG_IP_VS_DEBUG - /* - * This is used for debug only. - * Start with the most likely hit - * End with BUG - */ - if (likely(skb->dev && skb->dev->nd_net)) - return dev_net(skb->dev); - if (skb_dst(skb) && skb_dst(skb)->dev) - return dev_net(skb_dst(skb)->dev); - WARN(skb->sk, "Maybe skb_sknet should be used in %s() at line:%d\n", - __func__, __LINE__); - if (likely(skb->sk && skb->sk->sk_net)) - return sock_net(skb->sk); - pr_err("There is no net ptr to find in the skb in %s() line:%d\n", - __func__, __LINE__); - BUG(); -#else - return dev_net(skb->dev ? : skb_dst(skb)->dev); -#endif -#else - return &init_net; -#endif -} - -static inline struct net *skb_sknet(const struct sk_buff *skb) -{ -#ifdef CONFIG_NET_NS -#ifdef CONFIG_IP_VS_DEBUG - /* Start with the most likely hit */ - if (likely(skb->sk && skb->sk->sk_net)) - return sock_net(skb->sk); - WARN(skb->dev, "Maybe skb_net should be used instead in %s() line:%d\n", - __func__, __LINE__); - if (likely(skb->dev && skb->dev->nd_net)) - return dev_net(skb->dev); - pr_err("There is no net ptr to find in the skb in %s() line:%d\n", - __func__, __LINE__); - BUG(); -#else - return sock_net(skb->sk); -#endif -#else - return &init_net; -#endif -} -/* - * This one needed for single_open_net since net is stored directly in - * private not as a struct i.e. seq_file_net can't be used. - */ -static inline struct net *seq_file_single_net(struct seq_file *seq) -{ -#ifdef CONFIG_NET_NS - return (struct net *)seq->private; -#else - return &init_net; -#endif -} - -/* Connections' size value needed by ip_vs_ctl.c */ -extern int ip_vs_conn_tab_size; - - -struct ip_vs_iphdr { - int len; - __u8 protocol; - union nf_inet_addr saddr; - union nf_inet_addr daddr; -}; - -static inline void -ip_vs_fill_iphdr(int af, const void *nh, struct ip_vs_iphdr *iphdr) -{ -#ifdef CONFIG_IP_VS_IPV6 - if (af == AF_INET6) { - const struct ipv6hdr *iph = nh; - iphdr->len = sizeof(struct ipv6hdr); - iphdr->protocol = iph->nexthdr; - iphdr->saddr.in6 = iph->saddr; - iphdr->daddr.in6 = iph->daddr; - } else -#endif - { - const struct iphdr *iph = nh; - iphdr->len = iph->ihl * 4; - iphdr->protocol = iph->protocol; - iphdr->saddr.ip = iph->saddr; - iphdr->daddr.ip = iph->daddr; - } -} - -static inline void ip_vs_addr_copy(int af, union nf_inet_addr *dst, - const union nf_inet_addr *src) -{ -#ifdef CONFIG_IP_VS_IPV6 - if (af == AF_INET6) - dst->in6 = src->in6; - else -#endif - dst->ip = src->ip; -} - -static inline int ip_vs_addr_equal(int af, const union nf_inet_addr *a, - const union nf_inet_addr *b) -{ -#ifdef CONFIG_IP_VS_IPV6 - if (af == AF_INET6) - return ipv6_addr_equal(&a->in6, &b->in6); -#endif - return a->ip == b->ip; -} - -#ifdef CONFIG_IP_VS_DEBUG -#include <linux/net.h> - -extern int ip_vs_get_debug_level(void); - -static inline const char *ip_vs_dbg_addr(int af, char *buf, size_t buf_len, - const union nf_inet_addr *addr, - int *idx) -{ - int len; -#ifdef CONFIG_IP_VS_IPV6 - if (af == AF_INET6) - len = snprintf(&buf[*idx], buf_len - *idx, "[%pI6]", - &addr->in6) + 1; - else -#endif - len = snprintf(&buf[*idx], buf_len - *idx, "%pI4", - &addr->ip) + 1; - - *idx += len; - BUG_ON(*idx > buf_len + 1); - return &buf[*idx - len]; -} - -#define IP_VS_DBG_BUF(level, msg, ...) \ - do { \ - char ip_vs_dbg_buf[160]; \ - int ip_vs_dbg_idx = 0; \ - if (level <= ip_vs_get_debug_level()) \ - printk(KERN_DEBUG pr_fmt(msg), ##__VA_ARGS__); \ - } while (0) -#define IP_VS_ERR_BUF(msg...) \ - do { \ - char ip_vs_dbg_buf[160]; \ - int ip_vs_dbg_idx = 0; \ - pr_err(msg); \ - } while (0) - -/* Only use from within IP_VS_DBG_BUF() or IP_VS_ERR_BUF macros */ -#define IP_VS_DBG_ADDR(af, addr) \ - ip_vs_dbg_addr(af, ip_vs_dbg_buf, \ - sizeof(ip_vs_dbg_buf), addr, \ - &ip_vs_dbg_idx) - -#define IP_VS_DBG(level, msg, ...) \ - do { \ - if (level <= ip_vs_get_debug_level()) \ - printk(KERN_DEBUG pr_fmt(msg), ##__VA_ARGS__); \ - } while (0) -#define IP_VS_DBG_RL(msg, ...) \ - do { \ - if (net_ratelimit()) \ - printk(KERN_DEBUG pr_fmt(msg), ##__VA_ARGS__); \ - } while (0) -#define IP_VS_DBG_PKT(level, af, pp, skb, ofs, msg) \ - do { \ - if (level <= ip_vs_get_debug_level()) \ - pp->debug_packet(af, pp, skb, ofs, msg); \ - } while (0) -#define IP_VS_DBG_RL_PKT(level, af, pp, skb, ofs, msg) \ - do { \ - if (level <= ip_vs_get_debug_level() && \ - net_ratelimit()) \ - pp->debug_packet(af, pp, skb, ofs, msg); \ - } while (0) -#else /* NO DEBUGGING at ALL */ -#define IP_VS_DBG_BUF(level, msg...) do {} while (0) -#define IP_VS_ERR_BUF(msg...) do {} while (0) -#define IP_VS_DBG(level, msg...) do {} while (0) -#define IP_VS_DBG_RL(msg...) do {} while (0) -#define IP_VS_DBG_PKT(level, af, pp, skb, ofs, msg) do {} while (0) -#define IP_VS_DBG_RL_PKT(level, af, pp, skb, ofs, msg) do {} while (0) -#endif - -#define IP_VS_BUG() BUG() -#define IP_VS_ERR_RL(msg, ...) \ - do { \ - if (net_ratelimit()) \ - pr_err(msg, ##__VA_ARGS__); \ - } while (0) - -#ifdef CONFIG_IP_VS_DEBUG -#define EnterFunction(level) \ - do { \ - if (level <= ip_vs_get_debug_level()) \ - printk(KERN_DEBUG \ - pr_fmt("Enter: %s, %s line %i\n"), \ - __func__, __FILE__, __LINE__); \ - } while (0) -#define LeaveFunction(level) \ - do { \ - if (level <= ip_vs_get_debug_level()) \ - printk(KERN_DEBUG \ - pr_fmt("Leave: %s, %s line %i\n"), \ - __func__, __FILE__, __LINE__); \ - } while (0) -#else -#define EnterFunction(level) do {} while (0) -#define LeaveFunction(level) do {} while (0) -#endif - -#define IP_VS_WAIT_WHILE(expr) while (expr) { cpu_relax(); } - - -/* - * The port number of FTP service (in network order). - */ -#define FTPPORT cpu_to_be16(21) -#define FTPDATA cpu_to_be16(20) - -/* - * TCP State Values - */ -enum { - IP_VS_TCP_S_NONE = 0, - IP_VS_TCP_S_ESTABLISHED, - IP_VS_TCP_S_SYN_SENT, - IP_VS_TCP_S_SYN_RECV, - IP_VS_TCP_S_FIN_WAIT, - IP_VS_TCP_S_TIME_WAIT, - IP_VS_TCP_S_CLOSE, - IP_VS_TCP_S_CLOSE_WAIT, - IP_VS_TCP_S_LAST_ACK, - IP_VS_TCP_S_LISTEN, - IP_VS_TCP_S_SYNACK, - IP_VS_TCP_S_LAST -}; - -/* - * UDP State Values - */ -enum { - IP_VS_UDP_S_NORMAL, - IP_VS_UDP_S_LAST, -}; - -/* - * ICMP State Values - */ -enum { - IP_VS_ICMP_S_NORMAL, - IP_VS_ICMP_S_LAST, -}; - -/* - * SCTP State Values - */ -enum ip_vs_sctp_states { - IP_VS_SCTP_S_NONE, - IP_VS_SCTP_S_INIT_CLI, - IP_VS_SCTP_S_INIT_SER, - IP_VS_SCTP_S_INIT_ACK_CLI, - IP_VS_SCTP_S_INIT_ACK_SER, - IP_VS_SCTP_S_ECHO_CLI, - IP_VS_SCTP_S_ECHO_SER, - IP_VS_SCTP_S_ESTABLISHED, - IP_VS_SCTP_S_SHUT_CLI, - IP_VS_SCTP_S_SHUT_SER, - IP_VS_SCTP_S_SHUT_ACK_CLI, - IP_VS_SCTP_S_SHUT_ACK_SER, - IP_VS_SCTP_S_CLOSED, - IP_VS_SCTP_S_LAST -}; - -/* - * Delta sequence info structure - * Each ip_vs_conn has 2 (output AND input seq. changes). - * Only used in the VS/NAT. - */ -struct ip_vs_seq { - __u32 init_seq; /* Add delta from this seq */ - __u32 delta; /* Delta in sequence numbers */ - __u32 previous_delta; /* Delta in sequence numbers - before last resized pkt */ -}; - -/* - * counters per cpu - */ -struct ip_vs_counters { - __u32 conns; /* connections scheduled */ - __u32 inpkts; /* incoming packets */ - __u32 outpkts; /* outgoing packets */ - __u64 inbytes; /* incoming bytes */ - __u64 outbytes; /* outgoing bytes */ -}; -/* - * Stats per cpu - */ -struct ip_vs_cpu_stats { - struct ip_vs_counters ustats; - struct u64_stats_sync syncp; -}; - -/* - * IPVS statistics objects - */ -struct ip_vs_estimator { - struct list_head list; - - u64 last_inbytes; - u64 last_outbytes; - u32 last_conns; - u32 last_inpkts; - u32 last_outpkts; - - u32 cps; - u32 inpps; - u32 outpps; - u32 inbps; - u32 outbps; -}; - -struct ip_vs_stats { - struct ip_vs_stats_user ustats; /* statistics */ - struct ip_vs_estimator est; /* estimator */ - struct ip_vs_cpu_stats *cpustats; /* per cpu counters */ - spinlock_t lock; /* spin lock */ - struct ip_vs_stats_user ustats0; /* reset values */ -}; - -struct dst_entry; -struct iphdr; -struct ip_vs_conn; -struct ip_vs_app; -struct sk_buff; -struct ip_vs_proto_data; - -struct ip_vs_protocol { - struct ip_vs_protocol *next; - char *name; - u16 protocol; - u16 num_states; - int dont_defrag; - - void (*init)(struct ip_vs_protocol *pp); - - void (*exit)(struct ip_vs_protocol *pp); - - int (*init_netns)(struct net *net, struct ip_vs_proto_data *pd); - - void (*exit_netns)(struct net *net, struct ip_vs_proto_data *pd); - - int (*conn_schedule)(int af, struct sk_buff *skb, - struct ip_vs_proto_data *pd, - int *verdict, struct ip_vs_conn **cpp); - - struct ip_vs_conn * - (*conn_in_get)(int af, - const struct sk_buff *skb, - const struct ip_vs_iphdr *iph, - unsigned int proto_off, - int inverse); - - struct ip_vs_conn * - (*conn_out_get)(int af, - const struct sk_buff *skb, - const struct ip_vs_iphdr *iph, - unsigned int proto_off, - int inverse); - - int (*snat_handler)(struct sk_buff *skb, - struct ip_vs_protocol *pp, struct ip_vs_conn *cp); - - int (*dnat_handler)(struct sk_buff *skb, - struct ip_vs_protocol *pp, struct ip_vs_conn *cp); - - int (*csum_check)(int af, struct sk_buff *skb, - struct ip_vs_protocol *pp); - - const char *(*state_name)(int state); - - void (*state_transition)(struct ip_vs_conn *cp, int direction, - const struct sk_buff *skb, - struct ip_vs_proto_data *pd); - - int (*register_app)(struct net *net, struct ip_vs_app *inc); - - void (*unregister_app)(struct net *net, struct ip_vs_app *inc); - - int (*app_conn_bind)(struct ip_vs_conn *cp); - - void (*debug_packet)(int af, struct ip_vs_protocol *pp, - const struct sk_buff *skb, - int offset, - const char *msg); - - void (*timeout_change)(struct ip_vs_proto_data *pd, int flags); -}; - -/* - * protocol data per netns - */ -struct ip_vs_proto_data { - struct ip_vs_proto_data *next; - struct ip_vs_protocol *pp; - int *timeout_table; /* protocol timeout table */ - atomic_t appcnt; /* counter of proto app incs. */ - struct tcp_states_t *tcp_state_table; -}; - -extern struct ip_vs_protocol *ip_vs_proto_get(unsigned short proto); -extern struct ip_vs_proto_data *ip_vs_proto_data_get(struct net *net, - unsigned short proto); - -struct ip_vs_conn_param { - struct net *net; - const union nf_inet_addr *caddr; - const union nf_inet_addr *vaddr; - __be16 cport; - __be16 vport; - __u16 protocol; - u16 af; - - const struct ip_vs_pe *pe; - char *pe_data; - __u8 pe_data_len; -}; - -/* - * IP_VS structure allocated for each dynamically scheduled connection - */ -struct ip_vs_conn { - struct hlist_node c_list; /* hashed list heads */ -#ifdef CONFIG_NET_NS - struct net *net; /* Name space */ -#endif - /* Protocol, addresses and port numbers */ - u16 af; /* address family */ - __be16 cport; - __be16 vport; - __be16 dport; - __u32 fwmark; /* Fire wall mark from skb */ - union nf_inet_addr caddr; /* client address */ - union nf_inet_addr vaddr; /* virtual address */ - union nf_inet_addr daddr; /* destination address */ - volatile __u32 flags; /* status flags */ - __u16 protocol; /* Which protocol (TCP/UDP) */ - - /* counter and timer */ - atomic_t refcnt; /* reference count */ - struct timer_list timer; /* Expiration timer */ - volatile unsigned long timeout; /* timeout */ - - /* Flags and state transition */ - spinlock_t lock; /* lock for state transition */ - volatile __u16 state; /* state info */ - volatile __u16 old_state; /* old state, to be used for - * state transition triggerd - * synchronization - */ - - /* Control members */ - struct ip_vs_conn *control; /* Master control connection */ - atomic_t n_control; /* Number of controlled ones */ - struct ip_vs_dest *dest; /* real server */ - atomic_t in_pkts; /* incoming packet counter */ - - /* packet transmitter for different forwarding methods. If it - mangles the packet, it must return NF_DROP or better NF_STOLEN, - otherwise this must be changed to a sk_buff **. - NF_ACCEPT can be returned when destination is local. - */ - int (*packet_xmit)(struct sk_buff *skb, struct ip_vs_conn *cp, - struct ip_vs_protocol *pp); - - /* Note: we can group the following members into a structure, - in order to save more space, and the following members are - only used in VS/NAT anyway */ - struct ip_vs_app *app; /* bound ip_vs_app object */ - void *app_data; /* Application private data */ - struct ip_vs_seq in_seq; /* incoming seq. struct */ - struct ip_vs_seq out_seq; /* outgoing seq. struct */ - - const struct ip_vs_pe *pe; - char *pe_data; - __u8 pe_data_len; -}; - -/* - * To save some memory in conn table when name space is disabled. - */ -static inline struct net *ip_vs_conn_net(const struct ip_vs_conn *cp) -{ -#ifdef CONFIG_NET_NS - return cp->net; -#else - return &init_net; -#endif -} -static inline void ip_vs_conn_net_set(struct ip_vs_conn *cp, struct net *net) -{ -#ifdef CONFIG_NET_NS - cp->net = net; -#endif -} - -static inline int ip_vs_conn_net_eq(const struct ip_vs_conn *cp, - struct net *net) -{ -#ifdef CONFIG_NET_NS - return cp->net == net; -#else - return 1; -#endif -} - -/* - * Extended internal versions of struct ip_vs_service_user and - * ip_vs_dest_user for IPv6 support. - * - * We need these to conveniently pass around service and destination - * options, but unfortunately, we also need to keep the old definitions to - * maintain userspace backwards compatibility for the setsockopt interface. - */ -struct ip_vs_service_user_kern { - /* virtual service addresses */ - u16 af; - u16 protocol; - union nf_inet_addr addr; /* virtual ip address */ - u16 port; - u32 fwmark; /* firwall mark of service */ - - /* virtual service options */ - char *sched_name; - char *pe_name; - unsigned flags; /* virtual service flags */ - unsigned timeout; /* persistent timeout in sec */ - u32 netmask; /* persistent netmask */ -}; - - -struct ip_vs_dest_user_kern { - /* destination server address */ - union nf_inet_addr addr; - u16 port; - - /* real server options */ - unsigned conn_flags; /* connection flags */ - int weight; /* destination weight */ - - /* thresholds for active connections */ - u32 u_threshold; /* upper threshold */ - u32 l_threshold; /* lower threshold */ -}; - - -/* - * The information about the virtual service offered to the net - * and the forwarding entries - */ -struct ip_vs_service { - struct list_head s_list; /* for normal service table */ - struct list_head f_list; /* for fwmark-based service table */ - atomic_t refcnt; /* reference counter */ - atomic_t usecnt; /* use counter */ - - u16 af; /* address family */ - __u16 protocol; /* which protocol (TCP/UDP) */ - union nf_inet_addr addr; /* IP address for virtual service */ - __be16 port; /* port number for the service */ - __u32 fwmark; /* firewall mark of the service */ - unsigned flags; /* service status flags */ - unsigned timeout; /* persistent timeout in ticks */ - __be32 netmask; /* grouping granularity */ - struct net *net; - - struct list_head destinations; /* real server d-linked list */ - __u32 num_dests; /* number of servers */ - struct ip_vs_stats stats; /* statistics for the service */ - struct ip_vs_app *inc; /* bind conns to this app inc */ - - /* for scheduling */ - struct ip_vs_scheduler *scheduler; /* bound scheduler object */ - rwlock_t sched_lock; /* lock sched_data */ - void *sched_data; /* scheduler application data */ - - /* alternate persistence engine */ - struct ip_vs_pe *pe; -}; - - -/* - * The real server destination forwarding entry - * with ip address, port number, and so on. - */ -struct ip_vs_dest { - struct list_head n_list; /* for the dests in the service */ - struct list_head d_list; /* for table with all the dests */ - - u16 af; /* address family */ - __be16 port; /* port number of the server */ - union nf_inet_addr addr; /* IP address of the server */ - volatile unsigned flags; /* dest status flags */ - atomic_t conn_flags; /* flags to copy to conn */ - atomic_t weight; /* server weight */ - - atomic_t refcnt; /* reference counter */ - struct ip_vs_stats stats; /* statistics */ - - /* connection counters and thresholds */ - atomic_t activeconns; /* active connections */ - atomic_t inactconns; /* inactive connections */ - atomic_t persistconns; /* persistent connections */ - __u32 u_threshold; /* upper threshold */ - __u32 l_threshold; /* lower threshold */ - - /* for destination cache */ - spinlock_t dst_lock; /* lock of dst_cache */ - struct dst_entry *dst_cache; /* destination cache entry */ - u32 dst_rtos; /* RT_TOS(tos) for dst */ - u32 dst_cookie; - union nf_inet_addr dst_saddr; - - /* for virtual service */ - struct ip_vs_service *svc; /* service it belongs to */ - __u16 protocol; /* which protocol (TCP/UDP) */ - __be16 vport; /* virtual port number */ - union nf_inet_addr vaddr; /* virtual IP address */ - __u32 vfwmark; /* firewall mark of service */ -}; - - -/* - * The scheduler object - */ -struct ip_vs_scheduler { - struct list_head n_list; /* d-linked list head */ - char *name; /* scheduler name */ - atomic_t refcnt; /* reference counter */ - struct module *module; /* THIS_MODULE/NULL */ - - /* scheduler initializing service */ - int (*init_service)(struct ip_vs_service *svc); - /* scheduling service finish */ - int (*done_service)(struct ip_vs_service *svc); - /* scheduler updating service */ - int (*update_service)(struct ip_vs_service *svc); - - /* selecting a server from the given service */ - struct ip_vs_dest* (*schedule)(struct ip_vs_service *svc, - const struct sk_buff *skb); -}; - -/* The persistence engine object */ -struct ip_vs_pe { - struct list_head n_list; /* d-linked list head */ - char *name; /* scheduler name */ - atomic_t refcnt; /* reference counter */ - struct module *module; /* THIS_MODULE/NULL */ - - /* get the connection template, if any */ - int (*fill_param)(struct ip_vs_conn_param *p, struct sk_buff *skb); - bool (*ct_match)(const struct ip_vs_conn_param *p, - struct ip_vs_conn *ct); - u32 (*hashkey_raw)(const struct ip_vs_conn_param *p, u32 initval, - bool inverse); - int (*show_pe_data)(const struct ip_vs_conn *cp, char *buf); -}; - -/* - * The application module object (a.k.a. app incarnation) - */ -struct ip_vs_app { - struct list_head a_list; /* member in app list */ - int type; /* IP_VS_APP_TYPE_xxx */ - char *name; /* application module name */ - __u16 protocol; - struct module *module; /* THIS_MODULE/NULL */ - struct list_head incs_list; /* list of incarnations */ - - /* members for application incarnations */ - struct list_head p_list; /* member in proto app list */ - struct ip_vs_app *app; /* its real application */ - __be16 port; /* port number in net order */ - atomic_t usecnt; /* usage counter */ - - /* - * output hook: Process packet in inout direction, diff set for TCP. - * Return: 0=Error, 1=Payload Not Mangled/Mangled but checksum is ok, - * 2=Mangled but checksum was not updated - */ - int (*pkt_out)(struct ip_vs_app *, struct ip_vs_conn *, - struct sk_buff *, int *diff); - - /* - * input hook: Process packet in outin direction, diff set for TCP. - * Return: 0=Error, 1=Payload Not Mangled/Mangled but checksum is ok, - * 2=Mangled but checksum was not updated - */ - int (*pkt_in)(struct ip_vs_app *, struct ip_vs_conn *, - struct sk_buff *, int *diff); - - /* ip_vs_app initializer */ - int (*init_conn)(struct ip_vs_app *, struct ip_vs_conn *); - - /* ip_vs_app finish */ - int (*done_conn)(struct ip_vs_app *, struct ip_vs_conn *); - - - /* not used now */ - int (*bind_conn)(struct ip_vs_app *, struct ip_vs_conn *, - struct ip_vs_protocol *); - - void (*unbind_conn)(struct ip_vs_app *, struct ip_vs_conn *); - - int * timeout_table; - int * timeouts; - int timeouts_size; - - int (*conn_schedule)(struct sk_buff *skb, struct ip_vs_app *app, - int *verdict, struct ip_vs_conn **cpp); - - struct ip_vs_conn * - (*conn_in_get)(const struct sk_buff *skb, struct ip_vs_app *app, - const struct iphdr *iph, unsigned int proto_off, - int inverse); - - struct ip_vs_conn * - (*conn_out_get)(const struct sk_buff *skb, struct ip_vs_app *app, - const struct iphdr *iph, unsigned int proto_off, - int inverse); - - int (*state_transition)(struct ip_vs_conn *cp, int direction, - const struct sk_buff *skb, - struct ip_vs_app *app); - - void (*timeout_change)(struct ip_vs_app *app, int flags); -}; - -/* IPVS in network namespace */ -struct netns_ipvs { - int gen; /* Generation */ - int enable; /* enable like nf_hooks do */ - /* - * Hash table: for real service lookups - */ - #define IP_VS_RTAB_BITS 4 - #define IP_VS_RTAB_SIZE (1 << IP_VS_RTAB_BITS) - #define IP_VS_RTAB_MASK (IP_VS_RTAB_SIZE - 1) - - struct list_head rs_table[IP_VS_RTAB_SIZE]; - /* ip_vs_app */ - struct list_head app_list; - /* ip_vs_ftp */ - struct ip_vs_app *ftp_app; - /* ip_vs_proto */ - #define IP_VS_PROTO_TAB_SIZE 32 /* must be power of 2 */ - struct ip_vs_proto_data *proto_data_table[IP_VS_PROTO_TAB_SIZE]; - /* ip_vs_proto_tcp */ -#ifdef CONFIG_IP_VS_PROTO_TCP - #define TCP_APP_TAB_BITS 4 - #define TCP_APP_TAB_SIZE (1 << TCP_APP_TAB_BITS) - #define TCP_APP_TAB_MASK (TCP_APP_TAB_SIZE - 1) - struct list_head tcp_apps[TCP_APP_TAB_SIZE]; - spinlock_t tcp_app_lock; -#endif - /* ip_vs_proto_udp */ -#ifdef CONFIG_IP_VS_PROTO_UDP - #define UDP_APP_TAB_BITS 4 - #define UDP_APP_TAB_SIZE (1 << UDP_APP_TAB_BITS) - #define UDP_APP_TAB_MASK (UDP_APP_TAB_SIZE - 1) - struct list_head udp_apps[UDP_APP_TAB_SIZE]; - spinlock_t udp_app_lock; -#endif - /* ip_vs_proto_sctp */ -#ifdef CONFIG_IP_VS_PROTO_SCTP - #define SCTP_APP_TAB_BITS 4 - #define SCTP_APP_TAB_SIZE (1 << SCTP_APP_TAB_BITS) - #define SCTP_APP_TAB_MASK (SCTP_APP_TAB_SIZE - 1) - /* Hash table for SCTP application incarnations */ - struct list_head sctp_apps[SCTP_APP_TAB_SIZE]; - spinlock_t sctp_app_lock; -#endif - /* ip_vs_conn */ - atomic_t conn_count; /* connection counter */ - - /* ip_vs_ctl */ - struct ip_vs_stats tot_stats; /* Statistics & est. */ - - int num_services; /* no of virtual services */ - - rwlock_t rs_lock; /* real services table */ - /* Trash for destinations */ - struct list_head dest_trash; - /* Service counters */ - atomic_t ftpsvc_counter; - atomic_t nullsvc_counter; - -#ifdef CONFIG_SYSCTL - /* 1/rate drop and drop-entry variables */ - struct delayed_work defense_work; /* Work handler */ - int drop_rate; - int drop_counter; - atomic_t dropentry; - /* locks in ctl.c */ - spinlock_t dropentry_lock; /* drop entry handling */ - spinlock_t droppacket_lock; /* drop packet handling */ - spinlock_t securetcp_lock; /* state and timeout tables */ - - /* sys-ctl struct */ - struct ctl_table_header *sysctl_hdr; - struct ctl_table *sysctl_tbl; -#endif - - /* sysctl variables */ - int sysctl_amemthresh; - int sysctl_am_droprate; - int sysctl_drop_entry; - int sysctl_drop_packet; - int sysctl_secure_tcp; -#ifdef CONFIG_IP_VS_NFCT - int sysctl_conntrack; -#endif - int sysctl_snat_reroute; - int sysctl_sync_ver; - int sysctl_cache_bypass; - int sysctl_expire_nodest_conn; - int sysctl_expire_quiescent_template; - int sysctl_sync_threshold[2]; - int sysctl_nat_icmp_send; - - /* ip_vs_lblc */ - int sysctl_lblc_expiration; - struct ctl_table_header *lblc_ctl_header; - struct ctl_table *lblc_ctl_table; - /* ip_vs_lblcr */ - int sysctl_lblcr_expiration; - struct ctl_table_header *lblcr_ctl_header; - struct ctl_table *lblcr_ctl_table; - /* ip_vs_est */ - struct list_head est_list; /* estimator list */ - spinlock_t est_lock; - struct timer_list est_timer; /* Estimation timer */ - /* ip_vs_sync */ - struct list_head sync_queue; - spinlock_t sync_lock; - struct ip_vs_sync_buff *sync_buff; - spinlock_t sync_buff_lock; - struct sockaddr_in sync_mcast_addr; - struct task_struct *master_thread; - struct task_struct *backup_thread; - int send_mesg_maxlen; - int recv_mesg_maxlen; - volatile int sync_state; - volatile int master_syncid; - volatile int backup_syncid; - struct mutex sync_mutex; - /* multicast interface name */ - char master_mcast_ifn[IP_VS_IFNAME_MAXLEN]; - char backup_mcast_ifn[IP_VS_IFNAME_MAXLEN]; - /* net name space ptr */ - struct net *net; /* Needed by timer routines */ -}; - -#define DEFAULT_SYNC_THRESHOLD 3 -#define DEFAULT_SYNC_PERIOD 50 -#define DEFAULT_SYNC_VER 1 - -#ifdef CONFIG_SYSCTL - -static inline int sysctl_sync_threshold(struct netns_ipvs *ipvs) -{ - return ipvs->sysctl_sync_threshold[0]; -} - -static inline int sysctl_sync_period(struct netns_ipvs *ipvs) -{ - return ipvs->sysctl_sync_threshold[1]; -} - -static inline int sysctl_sync_ver(struct netns_ipvs *ipvs) -{ - return ipvs->sysctl_sync_ver; -} - -#else - -static inline int sysctl_sync_threshold(struct netns_ipvs *ipvs) -{ - return DEFAULT_SYNC_THRESHOLD; -} - -static inline int sysctl_sync_period(struct netns_ipvs *ipvs) -{ - return DEFAULT_SYNC_PERIOD; -} - -static inline int sysctl_sync_ver(struct netns_ipvs *ipvs) -{ - return DEFAULT_SYNC_VER; -} - -#endif - -/* - * IPVS core functions - * (from ip_vs_core.c) - */ -extern const char *ip_vs_proto_name(unsigned proto); -extern void ip_vs_init_hash_table(struct list_head *table, int rows); -#define IP_VS_INIT_HASH_TABLE(t) ip_vs_init_hash_table((t), ARRAY_SIZE((t))) - -#define IP_VS_APP_TYPE_FTP 1 - -/* - * ip_vs_conn handling functions - * (from ip_vs_conn.c) - */ - -enum { - IP_VS_DIR_INPUT = 0, - IP_VS_DIR_OUTPUT, - IP_VS_DIR_INPUT_ONLY, - IP_VS_DIR_LAST, -}; - -static inline void ip_vs_conn_fill_param(struct net *net, int af, int protocol, - const union nf_inet_addr *caddr, - __be16 cport, - const union nf_inet_addr *vaddr, - __be16 vport, - struct ip_vs_conn_param *p) -{ - p->net = net; - p->af = af; - p->protocol = protocol; - p->caddr = caddr; - p->cport = cport; - p->vaddr = vaddr; - p->vport = vport; - p->pe = NULL; - p->pe_data = NULL; -} - -struct ip_vs_conn *ip_vs_conn_in_get(const struct ip_vs_conn_param *p); -struct ip_vs_conn *ip_vs_ct_in_get(const struct ip_vs_conn_param *p); - -struct ip_vs_conn * ip_vs_conn_in_get_proto(int af, const struct sk_buff *skb, - const struct ip_vs_iphdr *iph, - unsigned int proto_off, - int inverse); - -struct ip_vs_conn *ip_vs_conn_out_get(const struct ip_vs_conn_param *p); - -struct ip_vs_conn * ip_vs_conn_out_get_proto(int af, const struct sk_buff *skb, - const struct ip_vs_iphdr *iph, - unsigned int proto_off, - int inverse); - -/* put back the conn without restarting its timer */ -static inline void __ip_vs_conn_put(struct ip_vs_conn *cp) -{ - atomic_dec(&cp->refcnt); -} -extern void ip_vs_conn_put(struct ip_vs_conn *cp); -extern void ip_vs_conn_fill_cport(struct ip_vs_conn *cp, __be16 cport); - -struct ip_vs_conn *ip_vs_conn_new(const struct ip_vs_conn_param *p, - const union nf_inet_addr *daddr, - __be16 dport, unsigned flags, - struct ip_vs_dest *dest, __u32 fwmark); -extern void ip_vs_conn_expire_now(struct ip_vs_conn *cp); - -extern const char * ip_vs_state_name(__u16 proto, int state); - -extern void ip_vs_tcp_conn_listen(struct net *net, struct ip_vs_conn *cp); -extern int ip_vs_check_template(struct ip_vs_conn *ct); -extern void ip_vs_random_dropentry(struct net *net); -extern int ip_vs_conn_init(void); -extern void ip_vs_conn_cleanup(void); - -static inline void ip_vs_control_del(struct ip_vs_conn *cp) -{ - struct ip_vs_conn *ctl_cp = cp->control; - if (!ctl_cp) { - IP_VS_ERR_BUF("request control DEL for uncontrolled: " - "%s:%d to %s:%d\n", - IP_VS_DBG_ADDR(cp->af, &cp->caddr), - ntohs(cp->cport), - IP_VS_DBG_ADDR(cp->af, &cp->vaddr), - ntohs(cp->vport)); - - return; - } - - IP_VS_DBG_BUF(7, "DELeting control for: " - "cp.dst=%s:%d ctl_cp.dst=%s:%d\n", - IP_VS_DBG_ADDR(cp->af, &cp->caddr), - ntohs(cp->cport), - IP_VS_DBG_ADDR(cp->af, &ctl_cp->caddr), - ntohs(ctl_cp->cport)); - - cp->control = NULL; - if (atomic_read(&ctl_cp->n_control) == 0) { - IP_VS_ERR_BUF("BUG control DEL with n=0 : " - "%s:%d to %s:%d\n", - IP_VS_DBG_ADDR(cp->af, &cp->caddr), - ntohs(cp->cport), - IP_VS_DBG_ADDR(cp->af, &cp->vaddr), - ntohs(cp->vport)); - - return; - } - atomic_dec(&ctl_cp->n_control); -} - -static inline void -ip_vs_control_add(struct ip_vs_conn *cp, struct ip_vs_conn *ctl_cp) -{ - if (cp->control) { - IP_VS_ERR_BUF("request control ADD for already controlled: " - "%s:%d to %s:%d\n", - IP_VS_DBG_ADDR(cp->af, &cp->caddr), - ntohs(cp->cport), - IP_VS_DBG_ADDR(cp->af, &cp->vaddr), - ntohs(cp->vport)); - - ip_vs_control_del(cp); - } - - IP_VS_DBG_BUF(7, "ADDing control for: " - "cp.dst=%s:%d ctl_cp.dst=%s:%d\n", - IP_VS_DBG_ADDR(cp->af, &cp->caddr), - ntohs(cp->cport), - IP_VS_DBG_ADDR(cp->af, &ctl_cp->caddr), - ntohs(ctl_cp->cport)); - - cp->control = ctl_cp; - atomic_inc(&ctl_cp->n_control); -} - -/* - * IPVS netns init & cleanup functions - */ -extern int ip_vs_estimator_net_init(struct net *net); -extern int ip_vs_control_net_init(struct net *net); -extern int ip_vs_protocol_net_init(struct net *net); -extern int ip_vs_app_net_init(struct net *net); -extern int ip_vs_conn_net_init(struct net *net); -extern int ip_vs_sync_net_init(struct net *net); -extern void ip_vs_conn_net_cleanup(struct net *net); -extern void ip_vs_app_net_cleanup(struct net *net); -extern void ip_vs_protocol_net_cleanup(struct net *net); -extern void ip_vs_control_net_cleanup(struct net *net); -extern void ip_vs_estimator_net_cleanup(struct net *net); -extern void ip_vs_sync_net_cleanup(struct net *net); -extern void ip_vs_service_net_cleanup(struct net *net); - -/* - * IPVS application functions - * (from ip_vs_app.c) - */ -#define IP_VS_APP_MAX_PORTS 8 -extern int register_ip_vs_app(struct net *net, struct ip_vs_app *app); -extern void unregister_ip_vs_app(struct net *net, struct ip_vs_app *app); -extern int ip_vs_bind_app(struct ip_vs_conn *cp, struct ip_vs_protocol *pp); -extern void ip_vs_unbind_app(struct ip_vs_conn *cp); -extern int register_ip_vs_app_inc(struct net *net, struct ip_vs_app *app, - __u16 proto, __u16 port); -extern int ip_vs_app_inc_get(struct ip_vs_app *inc); -extern void ip_vs_app_inc_put(struct ip_vs_app *inc); - -extern int ip_vs_app_pkt_out(struct ip_vs_conn *, struct sk_buff *skb); -extern int ip_vs_app_pkt_in(struct ip_vs_conn *, struct sk_buff *skb); - -void ip_vs_bind_pe(struct ip_vs_service *svc, struct ip_vs_pe *pe); -void ip_vs_unbind_pe(struct ip_vs_service *svc); -int register_ip_vs_pe(struct ip_vs_pe *pe); -int unregister_ip_vs_pe(struct ip_vs_pe *pe); -struct ip_vs_pe *ip_vs_pe_getbyname(const char *name); -struct ip_vs_pe *__ip_vs_pe_getbyname(const char *pe_name); - -/* - * Use a #define to avoid all of module.h just for these trivial ops - */ -#define ip_vs_pe_get(pe) \ - if (pe && pe->module) \ - __module_get(pe->module); - -#define ip_vs_pe_put(pe) \ - if (pe && pe->module) \ - module_put(pe->module); - -/* - * IPVS protocol functions (from ip_vs_proto.c) - */ -extern int ip_vs_protocol_init(void); -extern void ip_vs_protocol_cleanup(void); -extern void ip_vs_protocol_timeout_change(struct netns_ipvs *ipvs, int flags); -extern int *ip_vs_create_timeout_table(int *table, int size); -extern int -ip_vs_set_state_timeout(int *table, int num, const char *const *names, - const char *name, int to); -extern void -ip_vs_tcpudp_debug_packet(int af, struct ip_vs_protocol *pp, - const struct sk_buff *skb, - int offset, const char *msg); - -extern struct ip_vs_protocol ip_vs_protocol_tcp; -extern struct ip_vs_protocol ip_vs_protocol_udp; -extern struct ip_vs_protocol ip_vs_protocol_icmp; -extern struct ip_vs_protocol ip_vs_protocol_esp; -extern struct ip_vs_protocol ip_vs_protocol_ah; -extern struct ip_vs_protocol ip_vs_protocol_sctp; - -/* - * Registering/unregistering scheduler functions - * (from ip_vs_sched.c) - */ -extern int register_ip_vs_scheduler(struct ip_vs_scheduler *scheduler); -extern int unregister_ip_vs_scheduler(struct ip_vs_scheduler *scheduler); -extern int ip_vs_bind_scheduler(struct ip_vs_service *svc, - struct ip_vs_scheduler *scheduler); -extern int ip_vs_unbind_scheduler(struct ip_vs_service *svc); -extern struct ip_vs_scheduler *ip_vs_scheduler_get(const char *sched_name); -extern void ip_vs_scheduler_put(struct ip_vs_scheduler *scheduler); -extern struct ip_vs_conn * -ip_vs_schedule(struct ip_vs_service *svc, struct sk_buff *skb, - struct ip_vs_proto_data *pd, int *ignored); -extern int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb, - struct ip_vs_proto_data *pd); - -extern void ip_vs_scheduler_err(struct ip_vs_service *svc, const char *msg); - - -/* - * IPVS control data and functions (from ip_vs_ctl.c) - */ -extern struct ip_vs_stats ip_vs_stats; -extern const struct ctl_path net_vs_ctl_path[]; -extern int sysctl_ip_vs_sync_ver; - -extern void ip_vs_sync_switch_mode(struct net *net, int mode); -extern struct ip_vs_service * -ip_vs_service_get(struct net *net, int af, __u32 fwmark, __u16 protocol, - const union nf_inet_addr *vaddr, __be16 vport); - -static inline void ip_vs_service_put(struct ip_vs_service *svc) -{ - atomic_dec(&svc->usecnt); -} - -extern struct ip_vs_dest * -ip_vs_lookup_real_service(struct net *net, int af, __u16 protocol, - const union nf_inet_addr *daddr, __be16 dport); - -extern int ip_vs_use_count_inc(void); -extern void ip_vs_use_count_dec(void); -extern int ip_vs_register_nl_ioctl(void); -extern void ip_vs_unregister_nl_ioctl(void); -extern int ip_vs_control_init(void); -extern void ip_vs_control_cleanup(void); -extern struct ip_vs_dest * -ip_vs_find_dest(struct net *net, int af, const union nf_inet_addr *daddr, - __be16 dport, const union nf_inet_addr *vaddr, __be16 vport, - __u16 protocol, __u32 fwmark, __u32 flags); -extern struct ip_vs_dest *ip_vs_try_bind_dest(struct ip_vs_conn *cp); - - -/* - * IPVS sync daemon data and function prototypes - * (from ip_vs_sync.c) - */ -extern int start_sync_thread(struct net *net, int state, char *mcast_ifn, - __u8 syncid); -extern int stop_sync_thread(struct net *net, int state); -extern void ip_vs_sync_conn(struct net *net, struct ip_vs_conn *cp); - - -/* - * IPVS rate estimator prototypes (from ip_vs_est.c) - */ -extern void ip_vs_start_estimator(struct net *net, struct ip_vs_stats *stats); -extern void ip_vs_stop_estimator(struct net *net, struct ip_vs_stats *stats); -extern void ip_vs_zero_estimator(struct ip_vs_stats *stats); -extern void ip_vs_read_estimator(struct ip_vs_stats_user *dst, - struct ip_vs_stats *stats); - -/* - * Various IPVS packet transmitters (from ip_vs_xmit.c) - */ -extern int ip_vs_null_xmit -(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp); -extern int ip_vs_bypass_xmit -(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp); -extern int ip_vs_nat_xmit -(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp); -extern int ip_vs_tunnel_xmit -(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp); -extern int ip_vs_dr_xmit -(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp); -extern int ip_vs_icmp_xmit -(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp, - int offset, unsigned int hooknum); -extern void ip_vs_dst_reset(struct ip_vs_dest *dest); - -#ifdef CONFIG_IP_VS_IPV6 -extern int ip_vs_bypass_xmit_v6 -(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp); -extern int ip_vs_nat_xmit_v6 -(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp); -extern int ip_vs_tunnel_xmit_v6 -(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp); -extern int ip_vs_dr_xmit_v6 -(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp); -extern int ip_vs_icmp_xmit_v6 -(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp, - int offset, unsigned int hooknum); -#endif - -#ifdef CONFIG_SYSCTL -/* - * This is a simple mechanism to ignore packets when - * we are loaded. Just set ip_vs_drop_rate to 'n' and - * we start to drop 1/rate of the packets - */ - -static inline int ip_vs_todrop(struct netns_ipvs *ipvs) -{ - if (!ipvs->drop_rate) - return 0; - if (--ipvs->drop_counter > 0) - return 0; - ipvs->drop_counter = ipvs->drop_rate; - return 1; -} -#else -static inline int ip_vs_todrop(struct netns_ipvs *ipvs) { return 0; } -#endif - -/* - * ip_vs_fwd_tag returns the forwarding tag of the connection - */ -#define IP_VS_FWD_METHOD(cp) (cp->flags & IP_VS_CONN_F_FWD_MASK) - -static inline char ip_vs_fwd_tag(struct ip_vs_conn *cp) -{ - char fwd; - - switch (IP_VS_FWD_METHOD(cp)) { - case IP_VS_CONN_F_MASQ: - fwd = 'M'; break; - case IP_VS_CONN_F_LOCALNODE: - fwd = 'L'; break; - case IP_VS_CONN_F_TUNNEL: - fwd = 'T'; break; - case IP_VS_CONN_F_DROUTE: - fwd = 'R'; break; - case IP_VS_CONN_F_BYPASS: - fwd = 'B'; break; - default: - fwd = '?'; break; - } - return fwd; -} - -extern void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp, - struct ip_vs_conn *cp, int dir); - -#ifdef CONFIG_IP_VS_IPV6 -extern void ip_vs_nat_icmp_v6(struct sk_buff *skb, struct ip_vs_protocol *pp, - struct ip_vs_conn *cp, int dir); -#endif - -extern __sum16 ip_vs_checksum_complete(struct sk_buff *skb, int offset); - -static inline __wsum ip_vs_check_diff4(__be32 old, __be32 new, __wsum oldsum) -{ - __be32 diff[2] = { ~old, new }; - - return csum_partial(diff, sizeof(diff), oldsum); -} - -#ifdef CONFIG_IP_VS_IPV6 -static inline __wsum ip_vs_check_diff16(const __be32 *old, const __be32 *new, - __wsum oldsum) -{ - __be32 diff[8] = { ~old[3], ~old[2], ~old[1], ~old[0], - new[3], new[2], new[1], new[0] }; - - return csum_partial(diff, sizeof(diff), oldsum); -} -#endif - -static inline __wsum ip_vs_check_diff2(__be16 old, __be16 new, __wsum oldsum) -{ - __be16 diff[2] = { ~old, new }; - - return csum_partial(diff, sizeof(diff), oldsum); -} - -/* - * Forget current conntrack (unconfirmed) and attach notrack entry - */ -static inline void ip_vs_notrack(struct sk_buff *skb) -{ -#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) - enum ip_conntrack_info ctinfo; - struct nf_conn *ct = nf_ct_get(skb, &ctinfo); - - if (!ct || !nf_ct_is_untracked(ct)) { - nf_reset(skb); - skb->nfct = &nf_ct_untracked_get()->ct_general; - skb->nfctinfo = IP_CT_NEW; - nf_conntrack_get(skb->nfct); - } -#endif -} - -#ifdef CONFIG_IP_VS_NFCT -/* - * Netfilter connection tracking - * (from ip_vs_nfct.c) - */ -static inline int ip_vs_conntrack_enabled(struct netns_ipvs *ipvs) -{ -#ifdef CONFIG_SYSCTL - return ipvs->sysctl_conntrack; -#else - return 0; -#endif -} - -extern void ip_vs_update_conntrack(struct sk_buff *skb, struct ip_vs_conn *cp, - int outin); -extern int ip_vs_confirm_conntrack(struct sk_buff *skb); -extern void ip_vs_nfct_expect_related(struct sk_buff *skb, struct nf_conn *ct, - struct ip_vs_conn *cp, u_int8_t proto, - const __be16 port, int from_rs); -extern void ip_vs_conn_drop_conntrack(struct ip_vs_conn *cp); - -#else - -static inline int ip_vs_conntrack_enabled(struct netns_ipvs *ipvs) -{ - return 0; -} - -static inline void ip_vs_update_conntrack(struct sk_buff *skb, - struct ip_vs_conn *cp, int outin) -{ -} - -static inline int ip_vs_confirm_conntrack(struct sk_buff *skb) -{ - return NF_ACCEPT; -} - -static inline void ip_vs_conn_drop_conntrack(struct ip_vs_conn *cp) -{ -} -/* CONFIG_IP_VS_NFCT */ -#endif - -static inline unsigned int -ip_vs_dest_conn_overhead(struct ip_vs_dest *dest) -{ - /* - * We think the overhead of processing active connections is 256 - * times higher than that of inactive connections in average. (This - * 256 times might not be accurate, we will change it later) We - * use the following formula to estimate the overhead now: - * dest->activeconns*256 + dest->inactconns - */ - return (atomic_read(&dest->activeconns) << 8) + - atomic_read(&dest->inactconns); -} - -#endif /* _NET_IP_VS_H */ |