diff options
Diffstat (limited to 'ANDROID_3.4.5/include/net/sctp/sm.h')
| -rw-r--r-- | ANDROID_3.4.5/include/net/sctp/sm.h | 448 |
1 files changed, 0 insertions, 448 deletions
diff --git a/ANDROID_3.4.5/include/net/sctp/sm.h b/ANDROID_3.4.5/include/net/sctp/sm.h deleted file mode 100644 index 9148632b..00000000 --- a/ANDROID_3.4.5/include/net/sctp/sm.h +++ /dev/null @@ -1,448 +0,0 @@ -/* SCTP kernel implementation - * (C) Copyright IBM Corp. 2001, 2004 - * Copyright (c) 1999-2000 Cisco, Inc. - * Copyright (c) 1999-2001 Motorola, Inc. - * Copyright (c) 2001 Intel Corp. - * - * This file is part of the SCTP kernel implementation - * - * These are definitions needed by the state machine. - * - * This SCTP implementation is free software; - * you can redistribute it and/or modify it under the terms of - * the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This SCTP implementation is distributed in the hope that it - * will be useful, but WITHOUT ANY WARRANTY; without even the implied - * ************************ - * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - * See the GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with GNU CC; see the file COPYING. If not, write to - * the Free Software Foundation, 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - * - * Please send any bug reports or fixes you make to the - * email addresses: - * lksctp developers <lksctp-developers@lists.sourceforge.net> - * - * Or submit a bug report through the following website: - * http://www.sf.net/projects/lksctp - * - * Written or modified by: - * La Monte H.P. Yarroll <piggy@acm.org> - * Karl Knutson <karl@athena.chicago.il.us> - * Xingang Guo <xingang.guo@intel.com> - * Jon Grimm <jgrimm@us.ibm.com> - * Dajiang Zhang <dajiang.zhang@nokia.com> - * Sridhar Samudrala <sri@us.ibm.com> - * Daisy Chang <daisyc@us.ibm.com> - * Ardelle Fan <ardelle.fan@intel.com> - * Kevin Gao <kevin.gao@intel.com> - * - * Any bugs reported given to us we will try to fix... any fixes shared will - * be incorporated into the next SCTP release. - */ - -#include <linux/types.h> -#include <linux/compiler.h> -#include <linux/slab.h> -#include <linux/in.h> -#include <net/sctp/command.h> -#include <net/sctp/sctp.h> - -#ifndef __sctp_sm_h__ -#define __sctp_sm_h__ - -/* - * Possible values for the disposition are: - */ -typedef enum { - SCTP_DISPOSITION_DISCARD, /* No further processing. */ - SCTP_DISPOSITION_CONSUME, /* Process return values normally. */ - SCTP_DISPOSITION_NOMEM, /* We ran out of memory--recover. */ - SCTP_DISPOSITION_DELETE_TCB, /* Close the association. */ - SCTP_DISPOSITION_ABORT, /* Close the association NOW. */ - SCTP_DISPOSITION_VIOLATION, /* The peer is misbehaving. */ - SCTP_DISPOSITION_NOT_IMPL, /* This entry is not implemented. */ - SCTP_DISPOSITION_ERROR, /* This is plain old user error. */ - SCTP_DISPOSITION_BUG, /* This is a bug. */ -} sctp_disposition_t; - -typedef struct { - int name; - int action; -} sctp_sm_command_t; - -typedef sctp_disposition_t (sctp_state_fn_t) (const struct sctp_endpoint *, - const struct sctp_association *, - const sctp_subtype_t type, - void *arg, - sctp_cmd_seq_t *); -typedef void (sctp_timer_event_t) (unsigned long); -typedef struct { - sctp_state_fn_t *fn; - const char *name; -} sctp_sm_table_entry_t; - -/* A naming convention of "sctp_sf_xxx" applies to all the state functions - * currently in use. - */ - -/* Prototypes for generic state functions. */ -sctp_state_fn_t sctp_sf_not_impl; -sctp_state_fn_t sctp_sf_bug; - -/* Prototypes for gener timer state functions. */ -sctp_state_fn_t sctp_sf_timer_ignore; - -/* Prototypes for chunk state functions. */ -sctp_state_fn_t sctp_sf_do_9_1_abort; -sctp_state_fn_t sctp_sf_cookie_wait_abort; -sctp_state_fn_t sctp_sf_cookie_echoed_abort; -sctp_state_fn_t sctp_sf_shutdown_pending_abort; -sctp_state_fn_t sctp_sf_shutdown_sent_abort; -sctp_state_fn_t sctp_sf_shutdown_ack_sent_abort; -sctp_state_fn_t sctp_sf_do_5_1B_init; -sctp_state_fn_t sctp_sf_do_5_1C_ack; -sctp_state_fn_t sctp_sf_do_5_1D_ce; -sctp_state_fn_t sctp_sf_do_5_1E_ca; -sctp_state_fn_t sctp_sf_do_4_C; -sctp_state_fn_t sctp_sf_eat_data_6_2; -sctp_state_fn_t sctp_sf_eat_data_fast_4_4; -sctp_state_fn_t sctp_sf_eat_sack_6_2; -sctp_state_fn_t sctp_sf_operr_notify; -sctp_state_fn_t sctp_sf_t1_init_timer_expire; -sctp_state_fn_t sctp_sf_t1_cookie_timer_expire; -sctp_state_fn_t sctp_sf_t2_timer_expire; -sctp_state_fn_t sctp_sf_t4_timer_expire; -sctp_state_fn_t sctp_sf_t5_timer_expire; -sctp_state_fn_t sctp_sf_sendbeat_8_3; -sctp_state_fn_t sctp_sf_beat_8_3; -sctp_state_fn_t sctp_sf_backbeat_8_3; -sctp_state_fn_t sctp_sf_do_9_2_final; -sctp_state_fn_t sctp_sf_do_9_2_shutdown; -sctp_state_fn_t sctp_sf_do_9_2_shut_ctsn; -sctp_state_fn_t sctp_sf_do_ecn_cwr; -sctp_state_fn_t sctp_sf_do_ecne; -sctp_state_fn_t sctp_sf_ootb; -sctp_state_fn_t sctp_sf_pdiscard; -sctp_state_fn_t sctp_sf_violation; -sctp_state_fn_t sctp_sf_discard_chunk; -sctp_state_fn_t sctp_sf_do_5_2_1_siminit; -sctp_state_fn_t sctp_sf_do_5_2_2_dupinit; -sctp_state_fn_t sctp_sf_do_5_2_3_initack; -sctp_state_fn_t sctp_sf_do_5_2_4_dupcook; -sctp_state_fn_t sctp_sf_unk_chunk; -sctp_state_fn_t sctp_sf_do_8_5_1_E_sa; -sctp_state_fn_t sctp_sf_cookie_echoed_err; -sctp_state_fn_t sctp_sf_do_asconf; -sctp_state_fn_t sctp_sf_do_asconf_ack; -sctp_state_fn_t sctp_sf_do_9_2_reshutack; -sctp_state_fn_t sctp_sf_eat_fwd_tsn; -sctp_state_fn_t sctp_sf_eat_fwd_tsn_fast; -sctp_state_fn_t sctp_sf_eat_auth; - -/* Prototypes for primitive event state functions. */ -sctp_state_fn_t sctp_sf_do_prm_asoc; -sctp_state_fn_t sctp_sf_do_prm_send; -sctp_state_fn_t sctp_sf_do_9_2_prm_shutdown; -sctp_state_fn_t sctp_sf_cookie_wait_prm_shutdown; -sctp_state_fn_t sctp_sf_cookie_echoed_prm_shutdown; -sctp_state_fn_t sctp_sf_do_9_1_prm_abort; -sctp_state_fn_t sctp_sf_cookie_wait_prm_abort; -sctp_state_fn_t sctp_sf_cookie_echoed_prm_abort; -sctp_state_fn_t sctp_sf_shutdown_pending_prm_abort; -sctp_state_fn_t sctp_sf_shutdown_sent_prm_abort; -sctp_state_fn_t sctp_sf_shutdown_ack_sent_prm_abort; -sctp_state_fn_t sctp_sf_error_closed; -sctp_state_fn_t sctp_sf_error_shutdown; -sctp_state_fn_t sctp_sf_ignore_primitive; -sctp_state_fn_t sctp_sf_do_prm_requestheartbeat; -sctp_state_fn_t sctp_sf_do_prm_asconf; - -/* Prototypes for other event state functions. */ -sctp_state_fn_t sctp_sf_do_no_pending_tsn; -sctp_state_fn_t sctp_sf_do_9_2_start_shutdown; -sctp_state_fn_t sctp_sf_do_9_2_shutdown_ack; -sctp_state_fn_t sctp_sf_ignore_other; -sctp_state_fn_t sctp_sf_cookie_wait_icmp_abort; - -/* Prototypes for timeout event state functions. */ -sctp_state_fn_t sctp_sf_do_6_3_3_rtx; -sctp_state_fn_t sctp_sf_do_6_2_sack; -sctp_state_fn_t sctp_sf_autoclose_timer_expire; - -/* Prototypes for utility support functions. */ -__u8 sctp_get_chunk_type(struct sctp_chunk *chunk); -const sctp_sm_table_entry_t *sctp_sm_lookup_event(sctp_event_t, - sctp_state_t, - sctp_subtype_t); -int sctp_chunk_iif(const struct sctp_chunk *); -struct sctp_association *sctp_make_temp_asoc(const struct sctp_endpoint *, - struct sctp_chunk *, - gfp_t gfp); -__u32 sctp_generate_verification_tag(void); -void sctp_populate_tie_tags(__u8 *cookie, __u32 curTag, __u32 hisTag); - -/* Prototypes for chunk-building functions. */ -struct sctp_chunk *sctp_make_init(const struct sctp_association *, - const struct sctp_bind_addr *, - gfp_t gfp, int vparam_len); -struct sctp_chunk *sctp_make_init_ack(const struct sctp_association *, - const struct sctp_chunk *, - const gfp_t gfp, - const int unkparam_len); -struct sctp_chunk *sctp_make_cookie_echo(const struct sctp_association *, - const struct sctp_chunk *); -struct sctp_chunk *sctp_make_cookie_ack(const struct sctp_association *, - const struct sctp_chunk *); -struct sctp_chunk *sctp_make_cwr(const struct sctp_association *, - const __u32 lowest_tsn, - const struct sctp_chunk *); -struct sctp_chunk * sctp_make_datafrag_empty(struct sctp_association *, - const struct sctp_sndrcvinfo *sinfo, - int len, const __u8 flags, - __u16 ssn); -struct sctp_chunk *sctp_make_ecne(const struct sctp_association *, - const __u32); -struct sctp_chunk *sctp_make_sack(const struct sctp_association *); -struct sctp_chunk *sctp_make_shutdown(const struct sctp_association *asoc, - const struct sctp_chunk *chunk); -struct sctp_chunk *sctp_make_shutdown_ack(const struct sctp_association *asoc, - const struct sctp_chunk *); -struct sctp_chunk *sctp_make_shutdown_complete(const struct sctp_association *, - const struct sctp_chunk *); -void sctp_init_cause(struct sctp_chunk *, __be16 cause, size_t); -struct sctp_chunk *sctp_make_abort(const struct sctp_association *, - const struct sctp_chunk *, - const size_t hint); -struct sctp_chunk *sctp_make_abort_no_data(const struct sctp_association *, - const struct sctp_chunk *, - __u32 tsn); -struct sctp_chunk *sctp_make_abort_user(const struct sctp_association *, - const struct msghdr *, size_t msg_len); -struct sctp_chunk *sctp_make_abort_violation(const struct sctp_association *, - const struct sctp_chunk *, - const __u8 *, - const size_t ); -struct sctp_chunk *sctp_make_violation_paramlen(const struct sctp_association *, - const struct sctp_chunk *, - struct sctp_paramhdr *); -struct sctp_chunk *sctp_make_heartbeat(const struct sctp_association *, - const struct sctp_transport *); -struct sctp_chunk *sctp_make_heartbeat_ack(const struct sctp_association *, - const struct sctp_chunk *, - const void *payload, - const size_t paylen); -struct sctp_chunk *sctp_make_op_error(const struct sctp_association *, - const struct sctp_chunk *chunk, - __be16 cause_code, - const void *payload, - size_t paylen, - size_t reserve_tail); - -struct sctp_chunk *sctp_make_asconf_update_ip(struct sctp_association *, - union sctp_addr *, - struct sockaddr *, - int, __be16); -struct sctp_chunk *sctp_make_asconf_set_prim(struct sctp_association *asoc, - union sctp_addr *addr); -int sctp_verify_asconf(const struct sctp_association *asoc, - struct sctp_paramhdr *param_hdr, void *chunk_end, - struct sctp_paramhdr **errp); -struct sctp_chunk *sctp_process_asconf(struct sctp_association *asoc, - struct sctp_chunk *asconf); -int sctp_process_asconf_ack(struct sctp_association *asoc, - struct sctp_chunk *asconf_ack); -struct sctp_chunk *sctp_make_fwdtsn(const struct sctp_association *asoc, - __u32 new_cum_tsn, size_t nstreams, - struct sctp_fwdtsn_skip *skiplist); -struct sctp_chunk *sctp_make_auth(const struct sctp_association *asoc); - -void sctp_chunk_assign_tsn(struct sctp_chunk *); -void sctp_chunk_assign_ssn(struct sctp_chunk *); - -/* Prototypes for statetable processing. */ - -int sctp_do_sm(sctp_event_t event_type, sctp_subtype_t subtype, - sctp_state_t state, - struct sctp_endpoint *, - struct sctp_association *asoc, - void *event_arg, - gfp_t gfp); - -/* 2nd level prototypes */ -void sctp_generate_t3_rtx_event(unsigned long peer); -void sctp_generate_heartbeat_event(unsigned long peer); -void sctp_generate_proto_unreach_event(unsigned long peer); - -void sctp_ootb_pkt_free(struct sctp_packet *); - -struct sctp_association *sctp_unpack_cookie(const struct sctp_endpoint *, - const struct sctp_association *, - struct sctp_chunk *, - gfp_t gfp, int *err, - struct sctp_chunk **err_chk_p); -int sctp_addip_addr_config(struct sctp_association *, sctp_param_t, - struct sockaddr_storage*, int); - -/* 3rd level prototypes */ -__u32 sctp_generate_tag(const struct sctp_endpoint *); -__u32 sctp_generate_tsn(const struct sctp_endpoint *); - -/* Extern declarations for major data structures. */ -extern sctp_timer_event_t *sctp_timer_events[SCTP_NUM_TIMEOUT_TYPES]; - - -/* Get the size of a DATA chunk payload. */ -static inline __u16 sctp_data_size(struct sctp_chunk *chunk) -{ - __u16 size; - - size = ntohs(chunk->chunk_hdr->length); - size -= sizeof(sctp_data_chunk_t); - - return size; -} - -/* Compare two TSNs */ - -/* RFC 1982 - Serial Number Arithmetic - * - * 2. Comparison - * Then, s1 is said to be equal to s2 if and only if i1 is equal to i2, - * in all other cases, s1 is not equal to s2. - * - * s1 is said to be less than s2 if, and only if, s1 is not equal to s2, - * and - * - * (i1 < i2 and i2 - i1 < 2^(SERIAL_BITS - 1)) or - * (i1 > i2 and i1 - i2 > 2^(SERIAL_BITS - 1)) - * - * s1 is said to be greater than s2 if, and only if, s1 is not equal to - * s2, and - * - * (i1 < i2 and i2 - i1 > 2^(SERIAL_BITS - 1)) or - * (i1 > i2 and i1 - i2 < 2^(SERIAL_BITS - 1)) - */ - -/* - * RFC 2960 - * 1.6 Serial Number Arithmetic - * - * Comparisons and arithmetic on TSNs in this document SHOULD use Serial - * Number Arithmetic as defined in [RFC1982] where SERIAL_BITS = 32. - */ - -enum { - TSN_SIGN_BIT = (1<<31) -}; - -static inline int TSN_lt(__u32 s, __u32 t) -{ - return ((s) - (t)) & TSN_SIGN_BIT; -} - -static inline int TSN_lte(__u32 s, __u32 t) -{ - return ((s) == (t)) || (((s) - (t)) & TSN_SIGN_BIT); -} - -/* Compare two SSNs */ - -/* - * RFC 2960 - * 1.6 Serial Number Arithmetic - * - * Comparisons and arithmetic on Stream Sequence Numbers in this document - * SHOULD use Serial Number Arithmetic as defined in [RFC1982] where - * SERIAL_BITS = 16. - */ -enum { - SSN_SIGN_BIT = (1<<15) -}; - -static inline int SSN_lt(__u16 s, __u16 t) -{ - return ((s) - (t)) & SSN_SIGN_BIT; -} - -static inline int SSN_lte(__u16 s, __u16 t) -{ - return ((s) == (t)) || (((s) - (t)) & SSN_SIGN_BIT); -} - -/* - * ADDIP 3.1.1 - * The valid range of Serial Number is from 0 to 4294967295 (2**32 - 1). Serial - * Numbers wrap back to 0 after reaching 4294967295. - */ -enum { - ADDIP_SERIAL_SIGN_BIT = (1<<31) -}; - -static inline int ADDIP_SERIAL_gte(__u16 s, __u16 t) -{ - return ((s) == (t)) || (((t) - (s)) & ADDIP_SERIAL_SIGN_BIT); -} - -/* Check VTAG of the packet matches the sender's own tag. */ -static inline int -sctp_vtag_verify(const struct sctp_chunk *chunk, - const struct sctp_association *asoc) -{ - /* RFC 2960 Sec 8.5 When receiving an SCTP packet, the endpoint - * MUST ensure that the value in the Verification Tag field of - * the received SCTP packet matches its own Tag. If the received - * Verification Tag value does not match the receiver's own - * tag value, the receiver shall silently discard the packet... - */ - if (ntohl(chunk->sctp_hdr->vtag) == asoc->c.my_vtag) - return 1; - - return 0; -} - -/* Check VTAG of the packet matches the sender's own tag and the T bit is - * not set, OR its peer's tag and the T bit is set in the Chunk Flags. - */ -static inline int -sctp_vtag_verify_either(const struct sctp_chunk *chunk, - const struct sctp_association *asoc) -{ - /* RFC 2960 Section 8.5.1, sctpimpguide Section 2.41 - * - * B) The receiver of a ABORT MUST accept the packet - * if the Verification Tag field of the packet matches its own tag - * and the T bit is not set - * OR - * it is set to its peer's tag and the T bit is set in the Chunk - * Flags. - * Otherwise, the receiver MUST silently discard the packet - * and take no further action. - * - * C) The receiver of a SHUTDOWN COMPLETE shall accept the packet - * if the Verification Tag field of the packet matches its own tag - * and the T bit is not set - * OR - * it is set to its peer's tag and the T bit is set in the Chunk - * Flags. - * Otherwise, the receiver MUST silently discard the packet - * and take no further action. An endpoint MUST ignore the - * SHUTDOWN COMPLETE if it is not in the SHUTDOWN-ACK-SENT state. - */ - if ((!sctp_test_T_bit(chunk) && - (ntohl(chunk->sctp_hdr->vtag) == asoc->c.my_vtag)) || - (sctp_test_T_bit(chunk) && asoc->c.peer_vtag && - (ntohl(chunk->sctp_hdr->vtag) == asoc->c.peer_vtag))) { - return 1; - } - - return 0; -} - -#endif /* __sctp_sm_h__ */ |