include/net/netns/sctp.h

   1 #ifndef __NETNS_SCTP_H__
   2 #define __NETNS_SCTP_H__
   3
   4 struct sock;
   5 struct proc_dir_entry;
   6 struct sctp_mib;
   7 struct ctl_table_header;
   8
   9 struct 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         /* Valid.Cookie.Life        - 60  seconds  */
  66         unsigned int valid_cookie_life;
  67
  68         /* Delayed SACK timeout  200ms default*/
  69         unsigned int sack_timeout;
  70
  71         /* HB.interval              - 30 seconds  */
  72         unsigned int hb_interval;
  73
  74         /* Association.Max.Retrans  - 10 attempts
  75          * Path.Max.Retrans         - 5  attempts (per destination address)
  76          * Max.Init.Retransmits     - 8  attempts
  77          */
  78         int max_retrans_association;
  79         int max_retrans_path;
  80         int max_retrans_init;
  81         /* Potentially-Failed.Max.Retrans sysctl value
  82          * taken from:
  83          * http://tools.ietf.org/html/draft-nishida-tsvwg-sctp-failover-05
  84          */
  85         int pf_retrans;
  86
  87         /*
  88          * Policy for preforming sctp/socket accounting
  89          * 0   - do socket level accounting, all assocs share sk_sndbuf
  90          * 1   - do sctp accounting, each asoc may use sk_sndbuf bytes
  91          */
  92         int sndbuf_policy;
  93
  94         /*
  95          * Policy for preforming sctp/socket accounting
  96          * 0   - do socket level accounting, all assocs share sk_rcvbuf
  97          * 1   - do sctp accounting, each asoc may use sk_rcvbuf bytes
  98          */
  99         int rcvbuf_policy;
 100
 101         int default_auto_asconf;
 102
 103         /* Flag to indicate if addip is enabled. */
 104         int addip_enable;
 105         int addip_noauth;
 106
 107         /* Flag to indicate if PR-SCTP is enabled. */
 108         int prsctp_enable;
 109
 110         /* Flag to idicate if SCTP-AUTH is enabled */
 111         int auth_enable;
 112
 113         /*
 114          * Policy to control SCTP IPv4 address scoping
 115          * 0   - Disable IPv4 address scoping
 116          * 1   - Enable IPv4 address scoping
 117          * 2   - Selectively allow only IPv4 private addresses
 118          * 3   - Selectively allow only IPv4 link local address
 119          */
 120         int scope_policy;
 121
 122         /* Threshold for rwnd update SACKS.  Receive buffer shifted this many
 123          * bits is an indicator of when to send and window update SACK.
 124          */
 125         int rwnd_upd_shift;
 126
 127         /* Threshold for autoclose timeout, in seconds. */
 128         unsigned long max_autoclose;
 129 };
 130
 131 #endif /* __NETNS_SCTP_H__ */