include/net/netns/ip_vs.h

   1 /*
   2  *  IP Virtual Server
   3  *  Data structure for network namspace
   4  *
   5  */
   6
   7 #ifndef IP_VS_H_
   8 #define IP_VS_H_
   9
  10 #include <linux/list.h>
  11 #include <linux/mutex.h>
  12 #include <linux/list_nulls.h>
  13 #include <linux/ip_vs.h>
  14 #include <asm/atomic.h>
  15 #include <linux/in.h>
  16
  17 struct ip_vs_stats;
  18 struct ip_vs_sync_buff;
  19 struct ctl_table_header;
  20
  21 struct netns_ipvs {
  22         int                     gen;            /* Generation */
  23         /*
  24          *      Hash table: for real service lookups
  25          */
  26         #define IP_VS_RTAB_BITS 4
  27         #define IP_VS_RTAB_SIZE (1 << IP_VS_RTAB_BITS)
  28         #define IP_VS_RTAB_MASK (IP_VS_RTAB_SIZE - 1)
  29
  30         struct list_head        rs_table[IP_VS_RTAB_SIZE];
  31         /* ip_vs_app */
  32         struct list_head        app_list;
  33         struct mutex            app_mutex;
  34         struct lock_class_key   app_key;        /* mutex debuging */
  35
  36         /* ip_vs_proto */
  37         #define IP_VS_PROTO_TAB_SIZE    32      /* must be power of 2 */
  38         struct ip_vs_proto_data *proto_data_table[IP_VS_PROTO_TAB_SIZE];
  39         /* ip_vs_proto_tcp */
  40 #ifdef CONFIG_IP_VS_PROTO_TCP
  41         #define TCP_APP_TAB_BITS        4
  42         #define TCP_APP_TAB_SIZE        (1 << TCP_APP_TAB_BITS)
  43         #define TCP_APP_TAB_MASK        (TCP_APP_TAB_SIZE - 1)
  44         struct list_head        tcp_apps[TCP_APP_TAB_SIZE];
  45         spinlock_t              tcp_app_lock;
  46 #endif
  47         /* ip_vs_proto_udp */
  48 #ifdef CONFIG_IP_VS_PROTO_UDP
  49         #define UDP_APP_TAB_BITS        4
  50         #define UDP_APP_TAB_SIZE        (1 << UDP_APP_TAB_BITS)
  51         #define UDP_APP_TAB_MASK        (UDP_APP_TAB_SIZE - 1)
  52         struct list_head        udp_apps[UDP_APP_TAB_SIZE];
  53         spinlock_t              udp_app_lock;
  54 #endif
  55         /* ip_vs_proto_sctp */
  56 #ifdef CONFIG_IP_VS_PROTO_SCTP
  57         #define SCTP_APP_TAB_BITS       4
  58         #define SCTP_APP_TAB_SIZE       (1 << SCTP_APP_TAB_BITS)
  59         #define SCTP_APP_TAB_MASK       (SCTP_APP_TAB_SIZE - 1)
  60         /* Hash table for SCTP application incarnations  */
  61         struct list_head        sctp_apps[SCTP_APP_TAB_SIZE];
  62         spinlock_t              sctp_app_lock;
  63 #endif
  64         /* ip_vs_conn */
  65         atomic_t                conn_count;      /*  connection counter */
  66
  67         /* ip_vs_ctl */
  68         struct ip_vs_stats              *tot_stats;  /* Statistics & est. */
  69         struct ip_vs_cpu_stats __percpu *cpustats;   /* Stats per cpu */
  70         seqcount_t                      *ustats_seq; /* u64 read retry */
  71
  72         int                     num_services;    /* no of virtual services */
  73         /* 1/rate drop and drop-entry variables */
  74         struct delayed_work     defense_work;   /* Work handler */
  75         int                     drop_rate;
  76         int                     drop_counter;
  77         atomic_t                dropentry;
  78         /* locks in ctl.c */
  79         spinlock_t              dropentry_lock;  /* drop entry handling */
  80         spinlock_t              droppacket_lock; /* drop packet handling */
  81         spinlock_t              securetcp_lock;  /* state and timeout tables */
  82         rwlock_t                rs_lock;         /* real services table */
  83         /* semaphore for IPVS sockopts. And, [gs]etsockopt may sleep. */
  84         struct lock_class_key   ctl_key;        /* ctl_mutex debuging */
  85         /* Trash for destinations */
  86         struct list_head        dest_trash;
  87         /* Service counters */
  88         atomic_t                ftpsvc_counter;
  89         atomic_t                nullsvc_counter;
  90
  91         /* sys-ctl struct */
  92         struct ctl_table_header *sysctl_hdr;
  93         struct ctl_table        *sysctl_tbl;
  94         /* sysctl variables */
  95         int                     sysctl_amemthresh;
  96         int                     sysctl_am_droprate;
  97         int                     sysctl_drop_entry;
  98         int                     sysctl_drop_packet;
  99         int                     sysctl_secure_tcp;
 100 #ifdef CONFIG_IP_VS_NFCT
 101         int                     sysctl_conntrack;
 102 #endif
 103         int                     sysctl_snat_reroute;
 104         int                     sysctl_sync_ver;
 105         int                     sysctl_cache_bypass;
 106         int                     sysctl_expire_nodest_conn;
 107         int                     sysctl_expire_quiescent_template;
 108         int                     sysctl_sync_threshold[2];
 109         int                     sysctl_nat_icmp_send;
 110
 111         /* ip_vs_lblc */
 112         int                     sysctl_lblc_expiration;
 113         struct ctl_table_header *lblc_ctl_header;
 114         struct ctl_table        *lblc_ctl_table;
 115         /* ip_vs_lblcr */
 116         int                     sysctl_lblcr_expiration;
 117         struct ctl_table_header *lblcr_ctl_header;
 118         struct ctl_table        *lblcr_ctl_table;
 119         /* ip_vs_est */
 120         struct list_head        est_list;       /* estimator list */
 121         spinlock_t              est_lock;
 122         struct timer_list       est_timer;      /* Estimation timer */
 123         /* ip_vs_sync */
 124         struct list_head        sync_queue;
 125         spinlock_t              sync_lock;
 126         struct ip_vs_sync_buff  *sync_buff;
 127         spinlock_t              sync_buff_lock;
 128         struct sockaddr_in      sync_mcast_addr;
 129         struct task_struct      *master_thread;
 130         struct task_struct      *backup_thread;
 131         int                     send_mesg_maxlen;
 132         int                     recv_mesg_maxlen;
 133         volatile int            sync_state;
 134         volatile int            master_syncid;
 135         volatile int            backup_syncid;
 136         /* multicast interface name */
 137         char                    master_mcast_ifn[IP_VS_IFNAME_MAXLEN];
 138         char                    backup_mcast_ifn[IP_VS_IFNAME_MAXLEN];
 139         /* net name space ptr */
 140         struct net              *net;            /* Needed by timer routines */
 141 };
 142
 143 #endif /* IP_VS_H_ */