mirror of https://gitee.com/openkylin/linux.git
144 lines
4.1 KiB
C
144 lines
4.1 KiB
C
/*
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* IP Virtual Server
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* Data structure for network namspace
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*
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*/
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#ifndef IP_VS_H_
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#define IP_VS_H_
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#include <linux/list.h>
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#include <linux/mutex.h>
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#include <linux/list_nulls.h>
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#include <linux/ip_vs.h>
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#include <asm/atomic.h>
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#include <linux/in.h>
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struct ip_vs_stats;
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struct ip_vs_sync_buff;
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struct ctl_table_header;
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struct netns_ipvs {
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int gen; /* Generation */
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/*
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* Hash table: for real service lookups
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*/
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#define IP_VS_RTAB_BITS 4
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#define IP_VS_RTAB_SIZE (1 << IP_VS_RTAB_BITS)
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#define IP_VS_RTAB_MASK (IP_VS_RTAB_SIZE - 1)
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struct list_head rs_table[IP_VS_RTAB_SIZE];
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/* ip_vs_app */
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struct list_head app_list;
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struct mutex app_mutex;
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struct lock_class_key app_key; /* mutex debuging */
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/* ip_vs_proto */
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#define IP_VS_PROTO_TAB_SIZE 32 /* must be power of 2 */
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struct ip_vs_proto_data *proto_data_table[IP_VS_PROTO_TAB_SIZE];
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/* ip_vs_proto_tcp */
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#ifdef CONFIG_IP_VS_PROTO_TCP
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#define TCP_APP_TAB_BITS 4
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#define TCP_APP_TAB_SIZE (1 << TCP_APP_TAB_BITS)
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#define TCP_APP_TAB_MASK (TCP_APP_TAB_SIZE - 1)
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struct list_head tcp_apps[TCP_APP_TAB_SIZE];
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spinlock_t tcp_app_lock;
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#endif
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/* ip_vs_proto_udp */
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#ifdef CONFIG_IP_VS_PROTO_UDP
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#define UDP_APP_TAB_BITS 4
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#define UDP_APP_TAB_SIZE (1 << UDP_APP_TAB_BITS)
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#define UDP_APP_TAB_MASK (UDP_APP_TAB_SIZE - 1)
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struct list_head udp_apps[UDP_APP_TAB_SIZE];
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spinlock_t udp_app_lock;
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#endif
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/* ip_vs_proto_sctp */
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#ifdef CONFIG_IP_VS_PROTO_SCTP
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#define SCTP_APP_TAB_BITS 4
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#define SCTP_APP_TAB_SIZE (1 << SCTP_APP_TAB_BITS)
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#define SCTP_APP_TAB_MASK (SCTP_APP_TAB_SIZE - 1)
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/* Hash table for SCTP application incarnations */
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struct list_head sctp_apps[SCTP_APP_TAB_SIZE];
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spinlock_t sctp_app_lock;
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#endif
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/* ip_vs_conn */
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atomic_t conn_count; /* connection counter */
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/* ip_vs_ctl */
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struct ip_vs_stats *tot_stats; /* Statistics & est. */
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struct ip_vs_cpu_stats __percpu *cpustats; /* Stats per cpu */
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seqcount_t *ustats_seq; /* u64 read retry */
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int num_services; /* no of virtual services */
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/* 1/rate drop and drop-entry variables */
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struct delayed_work defense_work; /* Work handler */
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int drop_rate;
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int drop_counter;
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atomic_t dropentry;
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/* locks in ctl.c */
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spinlock_t dropentry_lock; /* drop entry handling */
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spinlock_t droppacket_lock; /* drop packet handling */
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spinlock_t securetcp_lock; /* state and timeout tables */
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rwlock_t rs_lock; /* real services table */
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/* semaphore for IPVS sockopts. And, [gs]etsockopt may sleep. */
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struct lock_class_key ctl_key; /* ctl_mutex debuging */
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/* Trash for destinations */
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struct list_head dest_trash;
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/* Service counters */
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atomic_t ftpsvc_counter;
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atomic_t nullsvc_counter;
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/* sys-ctl struct */
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struct ctl_table_header *sysctl_hdr;
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struct ctl_table *sysctl_tbl;
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/* sysctl variables */
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int sysctl_amemthresh;
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int sysctl_am_droprate;
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int sysctl_drop_entry;
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int sysctl_drop_packet;
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int sysctl_secure_tcp;
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#ifdef CONFIG_IP_VS_NFCT
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int sysctl_conntrack;
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#endif
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int sysctl_snat_reroute;
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int sysctl_sync_ver;
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int sysctl_cache_bypass;
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int sysctl_expire_nodest_conn;
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int sysctl_expire_quiescent_template;
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int sysctl_sync_threshold[2];
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int sysctl_nat_icmp_send;
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/* ip_vs_lblc */
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int sysctl_lblc_expiration;
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struct ctl_table_header *lblc_ctl_header;
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struct ctl_table *lblc_ctl_table;
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/* ip_vs_lblcr */
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int sysctl_lblcr_expiration;
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struct ctl_table_header *lblcr_ctl_header;
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struct ctl_table *lblcr_ctl_table;
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/* ip_vs_est */
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struct list_head est_list; /* estimator list */
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spinlock_t est_lock;
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struct timer_list est_timer; /* Estimation timer */
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/* ip_vs_sync */
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struct list_head sync_queue;
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spinlock_t sync_lock;
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struct ip_vs_sync_buff *sync_buff;
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spinlock_t sync_buff_lock;
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struct sockaddr_in sync_mcast_addr;
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struct task_struct *master_thread;
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struct task_struct *backup_thread;
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int send_mesg_maxlen;
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int recv_mesg_maxlen;
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volatile int sync_state;
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volatile int master_syncid;
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volatile int backup_syncid;
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/* multicast interface name */
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char master_mcast_ifn[IP_VS_IFNAME_MAXLEN];
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char backup_mcast_ifn[IP_VS_IFNAME_MAXLEN];
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/* net name space ptr */
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struct net *net; /* Needed by timer routines */
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};
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#endif /* IP_VS_H_ */
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