LXR linux/include/net/netns/sctp.h

   1#ifndef __NETNS_SCTP_H__
   2#define __NETNS_SCTP_H__
   3
   4struct sock;
   5struct proc_dir_entry;
   6struct sctp_mib;
   7struct ctl_table_header;
   8
   9struct netns_sctp {
  10        DEFINE_SNMP_STAT(struct sctp_mib, sctp_statistics);
  11
  12#ifdef CONFIG_PROC_FS
  13        struct proc_dir_entry *proc_net_sctp;
  14#endif
  15#ifdef CONFIG_SYSCTL
  16        struct ctl_table_header *sysctl_header;
  17#endif
  18        /* This is the global socket data structure used for responding to
  19         * the Out-of-the-blue (OOTB) packets.  A control sock will be created
  20         * for this socket at the initialization time.
  21         */
  22        struct sock *ctl_sock;
  23
  24        /* This is the global local address list.
  25         * We actively maintain this complete list of addresses on
  26         * the system by catching address add/delete events.
  27         *
  28         * It is a list of sctp_sockaddr_entry.
  29         */
  30        struct list_head local_addr_list;
  31        struct list_head addr_waitq;
  32        struct timer_list addr_wq_timer;
  33        struct list_head auto_asconf_splist;
  34        spinlock_t addr_wq_lock;
  35
  36        /* Lock that protects the local_addr_list writers */
  37        spinlock_t local_addr_lock;
  38
  39        /* RFC2960 Section 14. Suggested SCTP Protocol Parameter Values
  40         *
  41         * The following protocol parameters are RECOMMENDED:
  42         *
  43         * RTO.Initial              - 3  seconds
  44         * RTO.Min                  - 1  second
  45         * RTO.Max                 -  60 seconds
  46         * RTO.Alpha                - 1/8  (3 when converted to right shifts.)
  47         * RTO.Beta                 - 1/4  (2 when converted to right shifts.)
  48         */
  49        unsigned int rto_initial;
  50        unsigned int rto_min;
  51        unsigned int rto_max;
  52
  53        /* Note: rto_alpha and rto_beta are really defined as inverse
  54         * powers of two to facilitate integer operations.
  55         */
  56        int rto_alpha;
  57        int rto_beta;
  58
  59        /* Max.Burst                - 4 */
  60        int max_burst;
  61
  62        /* Whether Cookie Preservative is enabled(1) or not(0) */
  63        int cookie_preserve_enable;
  64
  65        /* The namespace default hmac alg */
  66        char *sctp_hmac_alg;
  67
  68        /* Valid.Cookie.Life        - 60  seconds  */
  69        unsigned int valid_cookie_life;
  70
  71        /* Delayed SACK timeout  200ms default*/
  72        unsigned int sack_timeout;
  73
  74        /* HB.interval              - 30 seconds  */
  75        unsigned int hb_interval;
  76
  77        /* Association.Max.Retrans  - 10 attempts
  78         * Path.Max.Retrans         - 5  attempts (per destination address)
  79         * Max.Init.Retransmits     - 8  attempts
  80         */
  81        int max_retrans_association;
  82        int max_retrans_path;
  83        int max_retrans_init;
  84        /* Potentially-Failed.Max.Retrans sysctl value
  85         * taken from:
  86         * http://tools.ietf.org/html/draft-nishida-tsvwg-sctp-failover-05
  87         */
  88        int pf_retrans;
  89
  90        /*
  91         * Policy for preforming sctp/socket accounting
  92         * 0   - do socket level accounting, all assocs share sk_sndbuf
  93         * 1   - do sctp accounting, each asoc may use sk_sndbuf bytes
  94         */
  95        int sndbuf_policy;
  96
  97        /*
  98         * Policy for preforming sctp/socket accounting
  99         * 0   - do socket level accounting, all assocs share sk_rcvbuf
 100         * 1   - do sctp accounting, each asoc may use sk_rcvbuf bytes
 101         */
 102        int rcvbuf_policy;
 103
 104        int default_auto_asconf;
 105
 106        /* Flag to indicate if addip is enabled. */
 107        int addip_enable;
 108        int addip_noauth;
 109
 110        /* Flag to indicate if PR-SCTP is enabled. */
 111        int prsctp_enable;
 112
 113        /* Flag to idicate if SCTP-AUTH is enabled */
 114        int auth_enable;
 115
 116        /*
 117         * Policy to control SCTP IPv4 address scoping
 118         * 0   - Disable IPv4 address scoping
 119         * 1   - Enable IPv4 address scoping
 120         * 2   - Selectively allow only IPv4 private addresses
 121         * 3   - Selectively allow only IPv4 link local address
 122         */
 123        int scope_policy;
 124
 125        /* Threshold for rwnd update SACKS.  Receive buffer shifted this many
 126         * bits is an indicator of when to send and window update SACK.
 127         */
 128        int rwnd_upd_shift;
 129
 130        /* Threshold for autoclose timeout, in seconds. */
 131        unsigned long max_autoclose;
 132};
 133
 134#endif /* __NETNS_SCTP_H__ */
 135