[mirror_ubuntu-bionic-kernel.git] / include / net / netns / sctp.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NETNS_SCTP_H__
#define __NETNS_SCTP_H__

struct sock;
struct proc_dir_entry;
struct sctp_mib;
struct ctl_table_header;

struct netns_sctp {
	DEFINE_SNMP_STAT(struct sctp_mib, sctp_statistics);

#ifdef CONFIG_PROC_FS
	struct proc_dir_entry *proc_net_sctp;
#endif
#ifdef CONFIG_SYSCTL
	struct ctl_table_header *sysctl_header;
#endif
	/* This is the global socket data structure used for responding to
	 * the Out-of-the-blue (OOTB) packets.  A control sock will be created
	 * for this socket at the initialization time.
	 */
	struct sock *ctl_sock;

	/* This is the global local address list.
	 * We actively maintain this complete list of addresses on
	 * the system by catching address add/delete events.
	 *
	 * It is a list of sctp_sockaddr_entry.
	 */
	struct list_head local_addr_list;
	struct list_head addr_waitq;
	struct timer_list addr_wq_timer;
	struct list_head auto_asconf_splist;
	/* Lock that protects both addr_waitq and auto_asconf_splist */
	spinlock_t addr_wq_lock;

	/* Lock that protects the local_addr_list writers */
	spinlock_t local_addr_lock;

	/* RFC2960 Section 14. Suggested SCTP Protocol Parameter Values
	 *
	 * The following protocol parameters are RECOMMENDED:
	 *
	 * RTO.Initial		    - 3	 seconds
	 * RTO.Min		    - 1	 second
	 * RTO.Max		   -  60 seconds
	 * RTO.Alpha		    - 1/8  (3 when converted to right shifts.)
	 * RTO.Beta		    - 1/4  (2 when converted to right shifts.)
	 */
	unsigned int rto_initial;
	unsigned int rto_min;
	unsigned int rto_max;

	/* Note: rto_alpha and rto_beta are really defined as inverse
	 * powers of two to facilitate integer operations.
	 */
	int rto_alpha;
	int rto_beta;

	/* Max.Burst		    - 4 */
	int max_burst;

	/* Whether Cookie Preservative is enabled(1) or not(0) */
	int cookie_preserve_enable;

	/* The namespace default hmac alg */
	char *sctp_hmac_alg;

	/* Valid.Cookie.Life	    - 60  seconds  */
	unsigned int valid_cookie_life;

	/* Delayed SACK timeout  200ms default*/
	unsigned int sack_timeout;

	/* HB.interval		    - 30 seconds  */
	unsigned int hb_interval;

	/* Association.Max.Retrans  - 10 attempts
	 * Path.Max.Retrans	    - 5	 attempts (per destination address)
	 * Max.Init.Retransmits	    - 8	 attempts
	 */
	int max_retrans_association;
	int max_retrans_path;
	int max_retrans_init;
	/* Potentially-Failed.Max.Retrans sysctl value
	 * taken from:
	 * http://tools.ietf.org/html/draft-nishida-tsvwg-sctp-failover-05
	 */
	int pf_retrans;

	/*
	 * Disable Potentially-Failed feature, the feature is enabled by default
	 * pf_enable	-  0  : disable pf
	 *		- >0  : enable pf
	 */
	int pf_enable;

	/*
	 * Policy for preforming sctp/socket accounting
	 * 0   - do socket level accounting, all assocs share sk_sndbuf
	 * 1   - do sctp accounting, each asoc may use sk_sndbuf bytes
	 */
	int sndbuf_policy;

	/*
	 * Policy for preforming sctp/socket accounting
	 * 0   - do socket level accounting, all assocs share sk_rcvbuf
	 * 1   - do sctp accounting, each asoc may use sk_rcvbuf bytes
	 */
	int rcvbuf_policy;

	int default_auto_asconf;

	/* Flag to indicate if addip is enabled. */
	int addip_enable;
	int addip_noauth;

	/* Flag to indicate if PR-SCTP is enabled. */
	int prsctp_enable;

	/* Flag to indicate if PR-CONFIG is enabled. */
	int reconf_enable;

	/* Flag to idicate if SCTP-AUTH is enabled */
	int auth_enable;

	/*
	 * Policy to control SCTP IPv4 address scoping
	 * 0   - Disable IPv4 address scoping
	 * 1   - Enable IPv4 address scoping
	 * 2   - Selectively allow only IPv4 private addresses
	 * 3   - Selectively allow only IPv4 link local address
	 */
	int scope_policy;

	/* Threshold for rwnd update SACKS.  Receive buffer shifted this many
	 * bits is an indicator of when to send and window update SACK.
	 */
	int rwnd_upd_shift;

	/* Threshold for autoclose timeout, in seconds. */
	unsigned long max_autoclose;
};

#endif /* __NETNS_SCTP_H__ */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
4db67e80 EB	2	#ifndef __NETNS_SCTP_H__
	3	#define __NETNS_SCTP_H__
	4
2ce95503	5	struct sock;
13d782f6	6	struct proc_dir_entry;
b01a2407	7	struct sctp_mib;
ebb7e95d	8	struct ctl_table_header;
2ce95503	9
4db67e80	10	struct netns_sctp {
b01a2407 EB	11	DEFINE_SNMP_STAT(struct sctp_mib, sctp_statistics);
b01a2407 EB	12
13d782f6 EB	13	#ifdef CONFIG_PROC_FS
	14	struct proc_dir_entry *proc_net_sctp;
	15	#endif
ebb7e95d EB	16	#ifdef CONFIG_SYSCTL
	17	struct ctl_table_header *sysctl_header;
	18	#endif
2ce95503 EB	19	/* This is the global socket data structure used for responding to
	20	* the Out-of-the-blue (OOTB) packets. A control sock will be created
	21	* for this socket at the initialization time.
	22	*/
	23	struct sock *ctl_sock;
	24
4db67e80 EB	25	/* This is the global local address list.
	26	* We actively maintain this complete list of addresses on
	27	* the system by catching address add/delete events.
	28	*
	29	* It is a list of sctp_sockaddr_entry.
	30	*/
	31	struct list_head local_addr_list;
	32	struct list_head addr_waitq;
	33	struct timer_list addr_wq_timer;
	34	struct list_head auto_asconf_splist;
2d45a02d	35	/* Lock that protects both addr_waitq and auto_asconf_splist */
4db67e80 EB	36	spinlock_t addr_wq_lock;
	37
	38	/* Lock that protects the local_addr_list writers */
	39	spinlock_t local_addr_lock;
ebb7e95d	40
e1fc3b14 EB	41	/* RFC2960 Section 14. Suggested SCTP Protocol Parameter Values
	42	*
	43	* The following protocol parameters are RECOMMENDED:
	44	*
	45	* RTO.Initial - 3 seconds
	46	* RTO.Min - 1 second
	47	* RTO.Max - 60 seconds
	48	* RTO.Alpha - 1/8 (3 when converted to right shifts.)
	49	* RTO.Beta - 1/4 (2 when converted to right shifts.)
	50	*/
	51	unsigned int rto_initial;
	52	unsigned int rto_min;
	53	unsigned int rto_max;
	54
	55	/* Note: rto_alpha and rto_beta are really defined as inverse
	56	* powers of two to facilitate integer operations.
	57	*/
	58	int rto_alpha;
	59	int rto_beta;
	60
	61	/* Max.Burst - 4 */
	62	int max_burst;
	63
	64	/* Whether Cookie Preservative is enabled(1) or not(0) */
	65	int cookie_preserve_enable;
	66
3c68198e NH	67	/* The namespace default hmac alg */
	68	char *sctp_hmac_alg;
	69
e1fc3b14 EB	70	/* Valid.Cookie.Life - 60 seconds */
	71	unsigned int valid_cookie_life;
	72
	73	/* Delayed SACK timeout 200ms default*/
	74	unsigned int sack_timeout;
	75
	76	/* HB.interval - 30 seconds */
	77	unsigned int hb_interval;
	78
	79	/* Association.Max.Retrans - 10 attempts
	80	* Path.Max.Retrans - 5 attempts (per destination address)
	81	* Max.Init.Retransmits - 8 attempts
	82	*/
	83	int max_retrans_association;
	84	int max_retrans_path;
	85	int max_retrans_init;
	86	/* Potentially-Failed.Max.Retrans sysctl value
	87	* taken from:
	88	* http://tools.ietf.org/html/draft-nishida-tsvwg-sctp-failover-05
	89	*/
	90	int pf_retrans;
	91
566178f8 ZY	92	/*
	93	* Disable Potentially-Failed feature, the feature is enabled by default
	94	* pf_enable - 0 : disable pf
	95	* - >0 : enable pf
	96	*/
	97	int pf_enable;
	98
e1fc3b14 EB	99	/*
	100	* Policy for preforming sctp/socket accounting
	101	* 0 - do socket level accounting, all assocs share sk_sndbuf
	102	* 1 - do sctp accounting, each asoc may use sk_sndbuf bytes
	103	*/
	104	int sndbuf_policy;
	105
	106	/*
	107	* Policy for preforming sctp/socket accounting
	108	* 0 - do socket level accounting, all assocs share sk_rcvbuf
	109	* 1 - do sctp accounting, each asoc may use sk_rcvbuf bytes
	110	*/
	111	int rcvbuf_policy;
	112
	113	int default_auto_asconf;
	114
	115	/* Flag to indicate if addip is enabled. */
	116	int addip_enable;
	117	int addip_noauth;
	118
	119	/* Flag to indicate if PR-SCTP is enabled. */
	120	int prsctp_enable;
	121
c28445c3 XL	122	/* Flag to indicate if PR-CONFIG is enabled. */
	123	int reconf_enable;
	124
e1fc3b14 EB	125	/* Flag to idicate if SCTP-AUTH is enabled */
	126	int auth_enable;
	127
	128	/*
	129	* Policy to control SCTP IPv4 address scoping
	130	* 0 - Disable IPv4 address scoping
	131	* 1 - Enable IPv4 address scoping
	132	* 2 - Selectively allow only IPv4 private addresses
	133	* 3 - Selectively allow only IPv4 link local address
	134	*/
	135	int scope_policy;
	136
	137	/* Threshold for rwnd update SACKS. Receive buffer shifted this many
	138	* bits is an indicator of when to send and window update SACK.
	139	*/
	140	int rwnd_upd_shift;
	141
	142	/* Threshold for autoclose timeout, in seconds. */
	143	unsigned long max_autoclose;
4db67e80 EB	144	};
	145
	146	#endif /* __NETNS_SCTP_H__ */