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        /* Lock that protects both addr_waitq and auto_asconf_splist */
  35        spinlock_t addr_wq_lock;
  36
  37        /* Lock that protects the local_addr_list writers */
  38        spinlock_t local_addr_lock;
  39
  40        /* RFC2960 Section 14. Suggested SCTP Protocol Parameter Values
  41         *
  42         * The following protocol parameters are RECOMMENDED:
  43         *
  44         * RTO.Initial              - 3  seconds
  45         * RTO.Min                  - 1  second
  46         * RTO.Max                 -  60 seconds
  47         * RTO.Alpha                - 1/8  (3 when converted to right shifts.)
  48         * RTO.Beta                 - 1/4  (2 when converted to right shifts.)
  49         */
  50        unsigned int rto_initial;
  51        unsigned int rto_min;
  52        unsigned int rto_max;
  53
  54        /* Note: rto_alpha and rto_beta are really defined as inverse
  55         * powers of two to facilitate integer operations.
  56         */
  57        int rto_alpha;
  58        int rto_beta;
  59
  60        /* Max.Burst                - 4 */
  61        int max_burst;
  62
  63        /* Whether Cookie Preservative is enabled(1) or not(0) */
  64        int cookie_preserve_enable;
  65
  66        /* The namespace default hmac alg */
  67        char *sctp_hmac_alg;
  68
  69        /* Valid.Cookie.Life        - 60  seconds  */
  70        unsigned int valid_cookie_life;
  71
  72        /* Delayed SACK timeout  200ms default*/
  73        unsigned int sack_timeout;
  74
  75        /* HB.interval              - 30 seconds  */
  76        unsigned int hb_interval;
  77
  78        /* Association.Max.Retrans  - 10 attempts
  79         * Path.Max.Retrans         - 5  attempts (per destination address)
  80         * Max.Init.Retransmits     - 8  attempts
  81         */
  82        int max_retrans_association;
  83        int max_retrans_path;
  84        int max_retrans_init;
  85        /* Potentially-Failed.Max.Retrans sysctl value
  86         * taken from:
  87         * http://tools.ietf.org/html/draft-nishida-tsvwg-sctp-failover-05
  88         */
  89        int pf_retrans;
  90
  91        /*
  92         * Disable Potentially-Failed feature, the feature is enabled by default
  93         * pf_enable    -  0  : disable pf
  94         *              - >0  : enable pf
  95         */
  96        int pf_enable;
  97
  98        /*
  99         * Policy for preforming sctp/socket accounting
 100         * 0   - do socket level accounting, all assocs share sk_sndbuf
 101         * 1   - do sctp accounting, each asoc may use sk_sndbuf bytes
 102         */
 103        int sndbuf_policy;
 104
 105        /*
 106         * Policy for preforming sctp/socket accounting
 107         * 0   - do socket level accounting, all assocs share sk_rcvbuf
 108         * 1   - do sctp accounting, each asoc may use sk_rcvbuf bytes
 109         */
 110        int rcvbuf_policy;
 111
 112        int default_auto_asconf;
 113
 114        /* Flag to indicate if addip is enabled. */
 115        int addip_enable;
 116        int addip_noauth;
 117
 118        /* Flag to indicate if PR-SCTP is enabled. */
 119        int prsctp_enable;
 120
 121        /* Flag to idicate if SCTP-AUTH is enabled */
 122        int auth_enable;
 123
 124        /*
 125         * Policy to control SCTP IPv4 address scoping
 126         * 0   - Disable IPv4 address scoping
 127         * 1   - Enable IPv4 address scoping
 128         * 2   - Selectively allow only IPv4 private addresses
 129         * 3   - Selectively allow only IPv4 link local address
 130         */
 131        int scope_policy;
 132
 133        /* Threshold for rwnd update SACKS.  Receive buffer shifted this many
 134         * bits is an indicator of when to send and window update SACK.
 135         */
 136        int rwnd_upd_shift;
 137
 138        /* Threshold for autoclose timeout, in seconds. */
 139        unsigned long max_autoclose;
 140};
 141
 142#endif /* __NETNS_SCTP_H__ */
 143