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__ */