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Diffstat (limited to 'ANDROID_3.4.5/include/net/sctp/tsnmap.h')
| -rw-r--r-- | ANDROID_3.4.5/include/net/sctp/tsnmap.h | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/ANDROID_3.4.5/include/net/sctp/tsnmap.h b/ANDROID_3.4.5/include/net/sctp/tsnmap.h deleted file mode 100644 index e7728bc1..00000000 --- a/ANDROID_3.4.5/include/net/sctp/tsnmap.h +++ /dev/null @@ -1,178 +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 the definitions needed for the tsnmap type. The tsnmap is used - * to track out of order TSNs received. - * - * 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 address(es): - * 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: - * Jon Grimm <jgrimm@us.ibm.com> - * La Monte H.P. Yarroll <piggy@acm.org> - * Karl Knutson <karl@athena.chicago.il.us> - * Sridhar Samudrala <sri@us.ibm.com> - * - * Any bugs reported given to us we will try to fix... any fixes shared will - * be incorporated into the next SCTP release. - */ -#include <net/sctp/constants.h> - -#ifndef __sctp_tsnmap_h__ -#define __sctp_tsnmap_h__ - -/* RFC 2960 12.2 Parameters necessary per association (i.e. the TCB) - * Mapping An array of bits or bytes indicating which out of - * Array order TSN's have been received (relative to the - * Last Rcvd TSN). If no gaps exist, i.e. no out of - * order packets have been received, this array - * will be set to all zero. This structure may be - * in the form of a circular buffer or bit array. - */ -struct sctp_tsnmap { - /* This array counts the number of chunks with each TSN. - * It points at one of the two buffers with which we will - * ping-pong between. - */ - unsigned long *tsn_map; - - /* This is the TSN at tsn_map[0]. */ - __u32 base_tsn; - - /* Last Rcvd : This is the last TSN received in - * TSN : sequence. This value is set initially by - * : taking the peer's Initial TSN, received in - * : the INIT or INIT ACK chunk, and subtracting - * : one from it. - * - * Throughout most of the specification this is called the - * "Cumulative TSN ACK Point". In this case, we - * ignore the advice in 12.2 in favour of the term - * used in the bulk of the text. - */ - __u32 cumulative_tsn_ack_point; - - /* This is the highest TSN we've marked. */ - __u32 max_tsn_seen; - - /* This is the minimum number of TSNs we can track. This corresponds - * to the size of tsn_map. Note: the overflow_map allows us to - * potentially track more than this quantity. - */ - __u16 len; - - /* Data chunks pending receipt. used by SCTP_STATUS sockopt */ - __u16 pending_data; - - /* Record duplicate TSNs here. We clear this after - * every SACK. Store up to SCTP_MAX_DUP_TSNS worth of - * information. - */ - __u16 num_dup_tsns; - __be32 dup_tsns[SCTP_MAX_DUP_TSNS]; -}; - -struct sctp_tsnmap_iter { - __u32 start; -}; - -/* Initialize a block of memory as a tsnmap. */ -struct sctp_tsnmap *sctp_tsnmap_init(struct sctp_tsnmap *, __u16 len, - __u32 initial_tsn, gfp_t gfp); - -void sctp_tsnmap_free(struct sctp_tsnmap *map); - -/* Test the tracking state of this TSN. - * Returns: - * 0 if the TSN has not yet been seen - * >0 if the TSN has been seen (duplicate) - * <0 if the TSN is invalid (too large to track) - */ -int sctp_tsnmap_check(const struct sctp_tsnmap *, __u32 tsn); - -/* Mark this TSN as seen. */ -int sctp_tsnmap_mark(struct sctp_tsnmap *, __u32 tsn); - -/* Mark this TSN and all lower as seen. */ -void sctp_tsnmap_skip(struct sctp_tsnmap *map, __u32 tsn); - -/* Retrieve the Cumulative TSN ACK Point. */ -static inline __u32 sctp_tsnmap_get_ctsn(const struct sctp_tsnmap *map) -{ - return map->cumulative_tsn_ack_point; -} - -/* Retrieve the highest TSN we've seen. */ -static inline __u32 sctp_tsnmap_get_max_tsn_seen(const struct sctp_tsnmap *map) -{ - return map->max_tsn_seen; -} - -/* How many duplicate TSNs are stored? */ -static inline __u16 sctp_tsnmap_num_dups(struct sctp_tsnmap *map) -{ - return map->num_dup_tsns; -} - -/* Return pointer to duplicate tsn array as needed by SACK. */ -static inline __be32 *sctp_tsnmap_get_dups(struct sctp_tsnmap *map) -{ - map->num_dup_tsns = 0; - return map->dup_tsns; -} - -/* How many gap ack blocks do we have recorded? */ -__u16 sctp_tsnmap_num_gabs(struct sctp_tsnmap *map, - struct sctp_gap_ack_block *gabs); - -/* Refresh the count on pending data. */ -__u16 sctp_tsnmap_pending(struct sctp_tsnmap *map); - -/* Is there a gap in the TSN map? */ -static inline int sctp_tsnmap_has_gap(const struct sctp_tsnmap *map) -{ - return map->cumulative_tsn_ack_point != map->max_tsn_seen; -} - -/* Mark a duplicate TSN. Note: limit the storage of duplicate TSN - * information. - */ -static inline void sctp_tsnmap_mark_dup(struct sctp_tsnmap *map, __u32 tsn) -{ - if (map->num_dup_tsns < SCTP_MAX_DUP_TSNS) - map->dup_tsns[map->num_dup_tsns++] = htonl(tsn); -} - -/* Renege a TSN that was seen. */ -void sctp_tsnmap_renege(struct sctp_tsnmap *, __u32 tsn); - -/* Is there a gap in the TSN map? */ -int sctp_tsnmap_has_gap(const struct sctp_tsnmap *); - -#endif /* __sctp_tsnmap_h__ */ |