1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __NETNS_SCTP_H__ 2 #ifndef __NETNS_SCTP_H__
3 #define __NETNS_SCTP_H__ 3 #define __NETNS_SCTP_H__
4 4
5 #include <linux/timer.h> 5 #include <linux/timer.h>
6 #include <net/snmp.h> 6 #include <net/snmp.h>
7 7
8 struct sock; 8 struct sock;
9 struct proc_dir_entry; 9 struct proc_dir_entry;
10 struct sctp_mib; 10 struct sctp_mib;
11 struct ctl_table_header; 11 struct ctl_table_header;
12 12
13 struct netns_sctp { 13 struct netns_sctp {
14 DEFINE_SNMP_STAT(struct sctp_mib, sctp 14 DEFINE_SNMP_STAT(struct sctp_mib, sctp_statistics);
15 15
16 #ifdef CONFIG_PROC_FS 16 #ifdef CONFIG_PROC_FS
17 struct proc_dir_entry *proc_net_sctp; 17 struct proc_dir_entry *proc_net_sctp;
18 #endif 18 #endif
19 #ifdef CONFIG_SYSCTL 19 #ifdef CONFIG_SYSCTL
20 struct ctl_table_header *sysctl_header 20 struct ctl_table_header *sysctl_header;
21 #endif 21 #endif
22 /* This is the global socket data stru 22 /* This is the global socket data structure used for responding to
23 * the Out-of-the-blue (OOTB) packets. 23 * the Out-of-the-blue (OOTB) packets. A control sock will be created
24 * for this socket at the initializati 24 * for this socket at the initialization time.
25 */ 25 */
26 struct sock *ctl_sock; 26 struct sock *ctl_sock;
27 27
28 /* UDP tunneling listening sock. */ 28 /* UDP tunneling listening sock. */
29 struct sock *udp4_sock; 29 struct sock *udp4_sock;
30 struct sock *udp6_sock; 30 struct sock *udp6_sock;
31 /* UDP tunneling listening port. */ 31 /* UDP tunneling listening port. */
32 int udp_port; 32 int udp_port;
33 /* UDP tunneling remote encap port. */ 33 /* UDP tunneling remote encap port. */
34 int encap_port; 34 int encap_port;
35 35
36 /* This is the global local address li 36 /* This is the global local address list.
37 * We actively maintain this complete 37 * We actively maintain this complete list of addresses on
38 * the system by catching address add/ 38 * the system by catching address add/delete events.
39 * 39 *
40 * It is a list of sctp_sockaddr_entry 40 * It is a list of sctp_sockaddr_entry.
41 */ 41 */
42 struct list_head local_addr_list; 42 struct list_head local_addr_list;
43 struct list_head addr_waitq; 43 struct list_head addr_waitq;
44 struct timer_list addr_wq_timer; 44 struct timer_list addr_wq_timer;
45 struct list_head auto_asconf_splist; 45 struct list_head auto_asconf_splist;
46 /* Lock that protects both addr_waitq 46 /* Lock that protects both addr_waitq and auto_asconf_splist */
47 spinlock_t addr_wq_lock; 47 spinlock_t addr_wq_lock;
48 48
49 /* Lock that protects the local_addr_l 49 /* Lock that protects the local_addr_list writers */
50 spinlock_t local_addr_lock; 50 spinlock_t local_addr_lock;
51 51
52 /* RFC2960 Section 14. Suggested SCTP 52 /* RFC2960 Section 14. Suggested SCTP Protocol Parameter Values
53 * 53 *
54 * The following protocol parameters a 54 * The following protocol parameters are RECOMMENDED:
55 * 55 *
56 * RTO.Initial - 3 secon 56 * RTO.Initial - 3 seconds
57 * RTO.Min - 1 secon 57 * RTO.Min - 1 second
58 * RTO.Max - 60 secon 58 * RTO.Max - 60 seconds
59 * RTO.Alpha - 1/8 (3 59 * RTO.Alpha - 1/8 (3 when converted to right shifts.)
60 * RTO.Beta - 1/4 (2 60 * RTO.Beta - 1/4 (2 when converted to right shifts.)
61 */ 61 */
62 unsigned int rto_initial; 62 unsigned int rto_initial;
63 unsigned int rto_min; 63 unsigned int rto_min;
64 unsigned int rto_max; 64 unsigned int rto_max;
65 65
66 /* Note: rto_alpha and rto_beta are re 66 /* Note: rto_alpha and rto_beta are really defined as inverse
67 * powers of two to facilitate integer 67 * powers of two to facilitate integer operations.
68 */ 68 */
69 int rto_alpha; 69 int rto_alpha;
70 int rto_beta; 70 int rto_beta;
71 71
72 /* Max.Burst - 4 */ 72 /* Max.Burst - 4 */
73 int max_burst; 73 int max_burst;
74 74
75 /* Whether Cookie Preservative is enab 75 /* Whether Cookie Preservative is enabled(1) or not(0) */
76 int cookie_preserve_enable; 76 int cookie_preserve_enable;
77 77
78 /* The namespace default hmac alg */ 78 /* The namespace default hmac alg */
79 char *sctp_hmac_alg; 79 char *sctp_hmac_alg;
80 80
81 /* Valid.Cookie.Life - 60 seco 81 /* Valid.Cookie.Life - 60 seconds */
82 unsigned int valid_cookie_life; 82 unsigned int valid_cookie_life;
83 83
84 /* Delayed SACK timeout 200ms default 84 /* Delayed SACK timeout 200ms default*/
85 unsigned int sack_timeout; 85 unsigned int sack_timeout;
86 86
87 /* HB.interval - 30 secon 87 /* HB.interval - 30 seconds */
88 unsigned int hb_interval; 88 unsigned int hb_interval;
89 89
90 /* The interval for PLPMTUD probe time 90 /* The interval for PLPMTUD probe timer */
91 unsigned int probe_interval; 91 unsigned int probe_interval;
92 92
93 /* Association.Max.Retrans - 10 attem 93 /* Association.Max.Retrans - 10 attempts
94 * Path.Max.Retrans - 5 attem 94 * Path.Max.Retrans - 5 attempts (per destination address)
95 * Max.Init.Retransmits - 8 attem 95 * Max.Init.Retransmits - 8 attempts
96 */ 96 */
97 int max_retrans_association; 97 int max_retrans_association;
98 int max_retrans_path; 98 int max_retrans_path;
99 int max_retrans_init; 99 int max_retrans_init;
100 /* Potentially-Failed.Max.Retrans sysc 100 /* Potentially-Failed.Max.Retrans sysctl value
101 * taken from: 101 * taken from:
102 * http://tools.ietf.org/html/draft-ni 102 * http://tools.ietf.org/html/draft-nishida-tsvwg-sctp-failover-05
103 */ 103 */
104 int pf_retrans; 104 int pf_retrans;
105 105
106 /* Primary.Switchover.Max.Retrans sysc 106 /* Primary.Switchover.Max.Retrans sysctl value
107 * taken from: 107 * taken from:
108 * https://tools.ietf.org/html/rfc7829 108 * https://tools.ietf.org/html/rfc7829
109 */ 109 */
110 int ps_retrans; 110 int ps_retrans;
111 111
112 /* 112 /*
113 * Disable Potentially-Failed feature, 113 * Disable Potentially-Failed feature, the feature is enabled by default
114 * pf_enable - 0 : disable pf 114 * pf_enable - 0 : disable pf
115 * - >0 : enable pf 115 * - >0 : enable pf
116 */ 116 */
117 int pf_enable; 117 int pf_enable;
118 118
119 /* 119 /*
120 * Disable Potentially-Failed state ex 120 * Disable Potentially-Failed state exposure, ignored by default
121 * pf_expose - 0 : compatible wit 121 * pf_expose - 0 : compatible with old applications (by default)
122 * - 1 : disable pf sta 122 * - 1 : disable pf state exposure
123 * - 2 : enable pf sta 123 * - 2 : enable pf state exposure
124 */ 124 */
125 int pf_expose; 125 int pf_expose;
126 126
127 /* 127 /*
128 * Policy for preforming sctp/socket a 128 * Policy for preforming sctp/socket accounting
129 * 0 - do socket level accounting, a 129 * 0 - do socket level accounting, all assocs share sk_sndbuf
130 * 1 - do sctp accounting, each asoc 130 * 1 - do sctp accounting, each asoc may use sk_sndbuf bytes
131 */ 131 */
132 int sndbuf_policy; 132 int sndbuf_policy;
133 133
134 /* 134 /*
135 * Policy for preforming sctp/socket a 135 * Policy for preforming sctp/socket accounting
136 * 0 - do socket level accounting, a 136 * 0 - do socket level accounting, all assocs share sk_rcvbuf
137 * 1 - do sctp accounting, each asoc 137 * 1 - do sctp accounting, each asoc may use sk_rcvbuf bytes
138 */ 138 */
139 int rcvbuf_policy; 139 int rcvbuf_policy;
140 140
141 int default_auto_asconf; 141 int default_auto_asconf;
142 142
143 /* Flag to indicate if addip is enable 143 /* Flag to indicate if addip is enabled. */
144 int addip_enable; 144 int addip_enable;
145 int addip_noauth; 145 int addip_noauth;
146 146
147 /* Flag to indicate if PR-SCTP is enab 147 /* Flag to indicate if PR-SCTP is enabled. */
148 int prsctp_enable; 148 int prsctp_enable;
149 149
150 /* Flag to indicate if PR-CONFIG is en 150 /* Flag to indicate if PR-CONFIG is enabled. */
151 int reconf_enable; 151 int reconf_enable;
152 152
153 /* Flag to indicate if SCTP-AUTH is en 153 /* Flag to indicate if SCTP-AUTH is enabled */
154 int auth_enable; 154 int auth_enable;
155 155
156 /* Flag to indicate if stream interlea 156 /* Flag to indicate if stream interleave is enabled */
157 int intl_enable; 157 int intl_enable;
158 158
159 /* Flag to indicate if ecn is enabled 159 /* Flag to indicate if ecn is enabled */
160 int ecn_enable; 160 int ecn_enable;
161 161
162 /* 162 /*
163 * Policy to control SCTP IPv4 address 163 * Policy to control SCTP IPv4 address scoping
164 * 0 - Disable IPv4 address scoping 164 * 0 - Disable IPv4 address scoping
165 * 1 - Enable IPv4 address scoping 165 * 1 - Enable IPv4 address scoping
166 * 2 - Selectively allow only IPv4 p 166 * 2 - Selectively allow only IPv4 private addresses
167 * 3 - Selectively allow only IPv4 l 167 * 3 - Selectively allow only IPv4 link local address
168 */ 168 */
169 int scope_policy; 169 int scope_policy;
170 170
171 /* Threshold for rwnd update SACKS. R 171 /* Threshold for rwnd update SACKS. Receive buffer shifted this many
172 * bits is an indicator of when to sen 172 * bits is an indicator of when to send and window update SACK.
173 */ 173 */
174 int rwnd_upd_shift; 174 int rwnd_upd_shift;
175 175
176 /* Threshold for autoclose timeout, in 176 /* Threshold for autoclose timeout, in seconds. */
177 unsigned long max_autoclose; 177 unsigned long max_autoclose;
178 178
179 #ifdef CONFIG_NET_L3_MASTER_DEV 179 #ifdef CONFIG_NET_L3_MASTER_DEV
180 int l3mdev_accept; 180 int l3mdev_accept;
181 #endif 181 #endif
182 }; 182 };
183 183
184 #endif /* __NETNS_SCTP_H__ */ 184 #endif /* __NETNS_SCTP_H__ */
185 185
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.