| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef __NETNS_SCTP_H__ |
| #define __NETNS_SCTP_H__ |
| |
| #include <linux/timer.h> |
| #include <net/snmp.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; |
| |
| /* UDP tunneling listening sock. */ |
| struct sock *udp4_sock; |
| struct sock *udp6_sock; |
| /* UDP tunneling listening port. */ |
| int udp_port; |
| /* UDP tunneling remote encap port. */ |
| int encap_port; |
| |
| /* 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; |
| |
| /* The interval for PLPMTUD probe timer */ |
| unsigned int probe_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; |
| |
| /* Primary.Switchover.Max.Retrans sysctl value |
| * taken from: |
| * https://tools.ietf.org/html/rfc7829 |
| */ |
| int ps_retrans; |
| |
| /* |
| * Disable Potentially-Failed feature, the feature is enabled by default |
| * pf_enable - 0 : disable pf |
| * - >0 : enable pf |
| */ |
| int pf_enable; |
| |
| /* |
| * Disable Potentially-Failed state exposure, ignored by default |
| * pf_expose - 0 : compatible with old applications (by default) |
| * - 1 : disable pf state exposure |
| * - 2 : enable pf state exposure |
| */ |
| int pf_expose; |
| |
| /* |
| * 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 indicate if SCTP-AUTH is enabled */ |
| int auth_enable; |
| |
| /* Flag to indicate if stream interleave is enabled */ |
| int intl_enable; |
| |
| /* Flag to indicate if ecn is enabled */ |
| int ecn_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__ */ |