structs.h (1ed1fe24170082bd82f62282eea0d0f8d0462a8e) structs.h (0c5dc070ff3d6246d22ddd931f23a6266249e3db)
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/* SCTP kernel implementation
3 * (C) Copyright IBM Corp. 2001, 2004
4 * Copyright (c) 1999-2000 Cisco, Inc.
5 * Copyright (c) 1999-2001 Motorola, Inc.
6 * Copyright (c) 2001 Intel Corp.
7 *
8 * This file is part of the SCTP kernel implementation

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172 __u32 default_rcv_context;
173 int max_burst;
174
175 /* Heartbeat interval: The endpoint sends out a Heartbeat chunk to
176 * the destination address every heartbeat interval. This value
177 * will be inherited by all new associations.
178 */
179 __u32 hbinterval;
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/* SCTP kernel implementation
3 * (C) Copyright IBM Corp. 2001, 2004
4 * Copyright (c) 1999-2000 Cisco, Inc.
5 * Copyright (c) 1999-2001 Motorola, Inc.
6 * Copyright (c) 2001 Intel Corp.
7 *
8 * This file is part of the SCTP kernel implementation

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172 __u32 default_rcv_context;
173 int max_burst;
174
175 /* Heartbeat interval: The endpoint sends out a Heartbeat chunk to
176 * the destination address every heartbeat interval. This value
177 * will be inherited by all new associations.
178 */
179 __u32 hbinterval;
180 __u32 probe_interval;
181
182 __be16 udp_port;
183 __be16 encap_port;
184
185 /* This is the max_retrans value for new associations. */
186 __u16 pathmaxrxt;
187
188 __u32 flowlabel;

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381 * chunk is sent and the destination transport address to which this
382 * HEARTBEAT is sent (see Section 8.3).
383 */
384struct sctp_sender_hb_info {
385 struct sctp_paramhdr param_hdr;
386 union sctp_addr daddr;
387 unsigned long sent_at;
388 __u64 hb_nonce;
180
181 __be16 udp_port;
182 __be16 encap_port;
183
184 /* This is the max_retrans value for new associations. */
185 __u16 pathmaxrxt;
186
187 __u32 flowlabel;

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380 * chunk is sent and the destination transport address to which this
381 * HEARTBEAT is sent (see Section 8.3).
382 */
383struct sctp_sender_hb_info {
384 struct sctp_paramhdr param_hdr;
385 union sctp_addr daddr;
386 unsigned long sent_at;
387 __u64 hb_nonce;
389 __u32 probe_size;
390};
391
392int sctp_stream_init(struct sctp_stream *stream, __u16 outcnt, __u16 incnt,
393 gfp_t gfp);
394int sctp_stream_init_ext(struct sctp_stream *stream, __u16 sid);
395void sctp_stream_free(struct sctp_stream *stream);
396void sctp_stream_clear(struct sctp_stream *stream);
397void sctp_stream_update(struct sctp_stream *stream, struct sctp_stream *new);

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458 const union sctp_addr *addr2);
459 void (*addr_copy) (union sctp_addr *dst,
460 union sctp_addr *src);
461 void (*from_skb) (union sctp_addr *,
462 struct sk_buff *skb,
463 int saddr);
464 void (*from_sk) (union sctp_addr *,
465 struct sock *sk);
388};
389
390int sctp_stream_init(struct sctp_stream *stream, __u16 outcnt, __u16 incnt,
391 gfp_t gfp);
392int sctp_stream_init_ext(struct sctp_stream *stream, __u16 sid);
393void sctp_stream_free(struct sctp_stream *stream);
394void sctp_stream_clear(struct sctp_stream *stream);
395void sctp_stream_update(struct sctp_stream *stream, struct sctp_stream *new);

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456 const union sctp_addr *addr2);
457 void (*addr_copy) (union sctp_addr *dst,
458 union sctp_addr *src);
459 void (*from_skb) (union sctp_addr *,
460 struct sk_buff *skb,
461 int saddr);
462 void (*from_sk) (union sctp_addr *,
463 struct sock *sk);
466 void (*from_addr_param) (union sctp_addr *,
464 bool (*from_addr_param) (union sctp_addr *,
467 union sctp_addr_param *,
468 __be16 port, int iif);
469 int (*to_addr_param) (const union sctp_addr *,
470 union sctp_addr_param *);
471 int (*addr_valid) (union sctp_addr *,
472 struct sctp_sock *,
473 const struct sk_buff *);
474 enum sctp_scope (*scope)(union sctp_addr *);

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653 singleton:1, /* Only chunk in the packet? */
654 end_of_packet:1, /* Last chunk in the packet? */
655 ecn_ce_done:1, /* Have we processed the ECN CE bit? */
656 pdiscard:1, /* Discard the whole packet now? */
657 tsn_gap_acked:1, /* Is this chunk acked by a GAP ACK? */
658 data_accepted:1, /* At least 1 chunk accepted */
659 auth:1, /* IN: was auth'ed | OUT: needs auth */
660 has_asconf:1, /* IN: have seen an asconf before */
465 union sctp_addr_param *,
466 __be16 port, int iif);
467 int (*to_addr_param) (const union sctp_addr *,
468 union sctp_addr_param *);
469 int (*addr_valid) (union sctp_addr *,
470 struct sctp_sock *,
471 const struct sk_buff *);
472 enum sctp_scope (*scope)(union sctp_addr *);

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651 singleton:1, /* Only chunk in the packet? */
652 end_of_packet:1, /* Last chunk in the packet? */
653 ecn_ce_done:1, /* Have we processed the ECN CE bit? */
654 pdiscard:1, /* Discard the whole packet now? */
655 tsn_gap_acked:1, /* Is this chunk acked by a GAP ACK? */
656 data_accepted:1, /* At least 1 chunk accepted */
657 auth:1, /* IN: was auth'ed | OUT: needs auth */
658 has_asconf:1, /* IN: have seen an asconf before */
661 pmtu_probe:1, /* Used by PLPMTUD, can be set in s HB chunk */
662 tsn_missing_report:2, /* Data chunk missing counter. */
663 fast_retransmit:2; /* Is this chunk fast retransmitted? */
664};
665
666#define sctp_chunk_retransmitted(chunk) (chunk->sent_count > 1)
667void sctp_chunk_hold(struct sctp_chunk *);
668void sctp_chunk_put(struct sctp_chunk *);
669int sctp_user_addto_chunk(struct sctp_chunk *chunk, int len,

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856 struct dst_entry *dst;
857 /* Source address. */
858 union sctp_addr saddr;
859
860 /* Heartbeat interval: The endpoint sends out a Heartbeat chunk to
861 * the destination address every heartbeat interval.
862 */
863 unsigned long hbinterval;
659 tsn_missing_report:2, /* Data chunk missing counter. */
660 fast_retransmit:2; /* Is this chunk fast retransmitted? */
661};
662
663#define sctp_chunk_retransmitted(chunk) (chunk->sent_count > 1)
664void sctp_chunk_hold(struct sctp_chunk *);
665void sctp_chunk_put(struct sctp_chunk *);
666int sctp_user_addto_chunk(struct sctp_chunk *chunk, int len,

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853 struct dst_entry *dst;
854 /* Source address. */
855 union sctp_addr saddr;
856
857 /* Heartbeat interval: The endpoint sends out a Heartbeat chunk to
858 * the destination address every heartbeat interval.
859 */
860 unsigned long hbinterval;
864 unsigned long probe_interval;
865
866 /* SACK delay timeout */
867 unsigned long sackdelay;
868 __u32 sackfreq;
869
870 atomic_t mtu_info;
871
872 /* When was the last time that we heard from this transport? We use

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933 struct timer_list hb_timer;
934
935 /* Timer to handle ICMP proto unreachable envets */
936 struct timer_list proto_unreach_timer;
937
938 /* Timer to handler reconf chunk rtx */
939 struct timer_list reconf_timer;
940
861
862 /* SACK delay timeout */
863 unsigned long sackdelay;
864 __u32 sackfreq;
865
866 atomic_t mtu_info;
867
868 /* When was the last time that we heard from this transport? We use

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929 struct timer_list hb_timer;
930
931 /* Timer to handle ICMP proto unreachable envets */
932 struct timer_list proto_unreach_timer;
933
934 /* Timer to handler reconf chunk rtx */
935 struct timer_list reconf_timer;
936
941 /* Timer to send a probe HB packet for PLPMTUD */
942 struct timer_list probe_timer;
943
944 /* Since we're using per-destination retransmission timers
945 * (see above), we're also using per-destination "transmitted"
946 * queues. This probably ought to be a private struct
947 * accessible only within the outqueue, but it's not, yet.
948 */
949 struct list_head transmitted;
950
951 /* We build bundle-able packets for this transport here. */

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978 char cycling_changeover;
979
980 /* A temporary flag, which is used during the processing of
981 * a SACK to estimate the causative TSN(s)'s group.
982 */
983 char cacc_saw_newack;
984 } cacc;
985
937 /* Since we're using per-destination retransmission timers
938 * (see above), we're also using per-destination "transmitted"
939 * queues. This probably ought to be a private struct
940 * accessible only within the outqueue, but it's not, yet.
941 */
942 struct list_head transmitted;
943
944 /* We build bundle-able packets for this transport here. */

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971 char cycling_changeover;
972
973 /* A temporary flag, which is used during the processing of
974 * a SACK to estimate the causative TSN(s)'s group.
975 */
976 char cacc_saw_newack;
977 } cacc;
978
986 struct {
987 __u16 pmtu;
988 __u16 probe_size;
989 __u16 probe_high;
990 __u8 probe_count:3;
991 __u8 raise_count:5;
992 __u8 state;
993 } pl; /* plpmtud related */
994
995 /* 64-bit random number sent with heartbeat. */
996 __u64 hb_nonce;
997
998 struct rcu_head rcu;
999};
1000
1001struct sctp_transport *sctp_transport_new(struct net *, const union sctp_addr *,
1002 gfp_t);
1003void sctp_transport_set_owner(struct sctp_transport *,
1004 struct sctp_association *);
1005void sctp_transport_route(struct sctp_transport *, union sctp_addr *,
1006 struct sctp_sock *);
1007void sctp_transport_pmtu(struct sctp_transport *, struct sock *sk);
1008void sctp_transport_free(struct sctp_transport *);
1009void sctp_transport_reset_t3_rtx(struct sctp_transport *);
1010void sctp_transport_reset_hb_timer(struct sctp_transport *);
1011void sctp_transport_reset_reconf_timer(struct sctp_transport *transport);
979 /* 64-bit random number sent with heartbeat. */
980 __u64 hb_nonce;
981
982 struct rcu_head rcu;
983};
984
985struct sctp_transport *sctp_transport_new(struct net *, const union sctp_addr *,
986 gfp_t);
987void sctp_transport_set_owner(struct sctp_transport *,
988 struct sctp_association *);
989void sctp_transport_route(struct sctp_transport *, union sctp_addr *,
990 struct sctp_sock *);
991void sctp_transport_pmtu(struct sctp_transport *, struct sock *sk);
992void sctp_transport_free(struct sctp_transport *);
993void sctp_transport_reset_t3_rtx(struct sctp_transport *);
994void sctp_transport_reset_hb_timer(struct sctp_transport *);
995void sctp_transport_reset_reconf_timer(struct sctp_transport *transport);
1012void sctp_transport_reset_probe_timer(struct sctp_transport *transport);
1013int sctp_transport_hold(struct sctp_transport *);
1014void sctp_transport_put(struct sctp_transport *);
1015void sctp_transport_update_rto(struct sctp_transport *, __u32);
1016void sctp_transport_raise_cwnd(struct sctp_transport *, __u32, __u32);
1017void sctp_transport_lower_cwnd(struct sctp_transport *t,
1018 enum sctp_lower_cwnd reason);
1019void sctp_transport_burst_limited(struct sctp_transport *);
1020void sctp_transport_burst_reset(struct sctp_transport *);
1021unsigned long sctp_transport_timeout(struct sctp_transport *);
1022void sctp_transport_reset(struct sctp_transport *t);
1023bool sctp_transport_update_pmtu(struct sctp_transport *t, u32 pmtu);
1024void sctp_transport_immediate_rtx(struct sctp_transport *);
1025void sctp_transport_dst_release(struct sctp_transport *t);
1026void sctp_transport_dst_confirm(struct sctp_transport *t);
996int sctp_transport_hold(struct sctp_transport *);
997void sctp_transport_put(struct sctp_transport *);
998void sctp_transport_update_rto(struct sctp_transport *, __u32);
999void sctp_transport_raise_cwnd(struct sctp_transport *, __u32, __u32);
1000void sctp_transport_lower_cwnd(struct sctp_transport *t,
1001 enum sctp_lower_cwnd reason);
1002void sctp_transport_burst_limited(struct sctp_transport *);
1003void sctp_transport_burst_reset(struct sctp_transport *);
1004unsigned long sctp_transport_timeout(struct sctp_transport *);
1005void sctp_transport_reset(struct sctp_transport *t);
1006bool sctp_transport_update_pmtu(struct sctp_transport *t, u32 pmtu);
1007void sctp_transport_immediate_rtx(struct sctp_transport *);
1008void sctp_transport_dst_release(struct sctp_transport *t);
1009void sctp_transport_dst_confirm(struct sctp_transport *t);
1027void sctp_transport_pl_send(struct sctp_transport *t);
1028void sctp_transport_pl_recv(struct sctp_transport *t);
1029
1030
1031/* This is the structure we use to queue packets as they come into
1032 * SCTP. We write packets to it and read chunks from it.
1033 */
1034struct sctp_inq {
1035 /* This is actually a queue of sctp_chunk each
1036 * containing a partially decoded packet.

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1809 /* The largest timeout or RTO value to use in attempting an INIT */
1810 unsigned long max_init_timeo;
1811
1812 /* Heartbeat interval: The endpoint sends out a Heartbeat chunk to
1813 * the destination address every heartbeat interval. This value
1814 * will be inherited by all new transports.
1815 */
1816 unsigned long hbinterval;
1010
1011
1012/* This is the structure we use to queue packets as they come into
1013 * SCTP. We write packets to it and read chunks from it.
1014 */
1015struct sctp_inq {
1016 /* This is actually a queue of sctp_chunk each
1017 * containing a partially decoded packet.

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1790 /* The largest timeout or RTO value to use in attempting an INIT */
1791 unsigned long max_init_timeo;
1792
1793 /* Heartbeat interval: The endpoint sends out a Heartbeat chunk to
1794 * the destination address every heartbeat interval. This value
1795 * will be inherited by all new transports.
1796 */
1797 unsigned long hbinterval;
1817 unsigned long probe_interval;
1818
1819 __be16 encap_port;
1820
1821 /* This is the max_retrans value for new transports in the
1822 * association.
1823 */
1824 __u16 pathmaxrxt;
1825

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1799 __be16 encap_port;
1800
1801 /* This is the max_retrans value for new transports in the
1802 * association.
1803 */
1804 __u16 pathmaxrxt;
1805

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