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	 * Policy for preforming sctp/socket accounting
93	 * 0   - do socket level accounting, all assocs share sk_sndbuf
94	 * 1   - do sctp accounting, each asoc may use sk_sndbuf bytes
95	 */
96	int sndbuf_policy;
97
98	/*
99	 * Policy for preforming sctp/socket accounting
100	 * 0   - do socket level accounting, all assocs share sk_rcvbuf
101	 * 1   - do sctp accounting, each asoc may use sk_rcvbuf bytes
102	 */
103	int rcvbuf_policy;
104
105	int default_auto_asconf;
106
107	/* Flag to indicate if addip is enabled. */
108	int addip_enable;
109	int addip_noauth;
110
111	/* Flag to indicate if PR-SCTP is enabled. */
112	int prsctp_enable;
113
114	/* Flag to idicate if SCTP-AUTH is enabled */
115	int auth_enable;
116
117	/*
118	 * Policy to control SCTP IPv4 address scoping
119	 * 0   - Disable IPv4 address scoping
120	 * 1   - Enable IPv4 address scoping
121	 * 2   - Selectively allow only IPv4 private addresses
122	 * 3   - Selectively allow only IPv4 link local address
123	 */
124	int scope_policy;
125
126	/* Threshold for rwnd update SACKS.  Receive buffer shifted this many
127	 * bits is an indicator of when to send and window update SACK.
128	 */
129	int rwnd_upd_shift;
130
131	/* Threshold for autoclose timeout, in seconds. */
132	unsigned long max_autoclose;
133};
134
135#endif /* __NETNS_SCTP_H__ */
136