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