The Tor Browser: netwerk/sctp/src/netinet/sctp

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     1 /*-

     2  * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.

     3  * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.

     4  * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.

     5  *

     6  * Redistribution and use in source and binary forms, with or without

     7  * modification, are permitted provided that the following conditions are met:

     8  *

     9  * a) Redistributions of source code must retain the above copyright notice,

    10  *    this list of conditions and the following disclaimer.

    11  *

    12  * b) Redistributions in binary form must reproduce the above copyright

    13  *    notice, this list of conditions and the following disclaimer in

    14  *    the documentation and/or other materials provided with the distribution.

    15  *

    16  * c) Neither the name of Cisco Systems, Inc. nor the names of its

    17  *    contributors may be used to endorse or promote products derived

    18  *    from this software without specific prior written permission.

    19  *

    20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

    21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

    22  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

    23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE

    24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

    25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

    26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

    27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

    28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

    29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF

    30  * THE POSSIBILITY OF SUCH DAMAGE.

    31  */

    33 #ifdef __FreeBSD__

    34 #include <sys/cdefs.h>

    35 __FBSDID("$FreeBSD: head/sys/netinet/sctp_indata.h 252585 2013-07-03 18:48:43Z tuexen $");

    36 #endif

    38 #ifndef _NETINET_SCTP_INDATA_H_

    39 #define _NETINET_SCTP_INDATA_H_

    41 #if defined(_KERNEL) || defined(__Userspace__)

    43 struct sctp_queued_to_read *

    44 sctp_build_readq_entry(struct sctp_tcb *stcb,

    45     struct sctp_nets *net,

    46     uint32_t tsn, uint32_t ppid,

    47     uint32_t context, uint16_t stream_no,

    48     uint16_t stream_seq, uint8_t flags,

    49     struct mbuf *dm);

    52 #define sctp_build_readq_entry_mac(_ctl, in_it, context, net, tsn, ppid, stream_no, stream_seq, flags, dm) do { \

    53 	if (_ctl) { \

    54 		atomic_add_int(&((net)->ref_count), 1); \

    55 		(_ctl)->sinfo_stream = stream_no; \

    56 		(_ctl)->sinfo_ssn = stream_seq; \

    57 		(_ctl)->sinfo_flags = (flags << 8); \

    58 		(_ctl)->sinfo_ppid = ppid; \

    59 		(_ctl)->sinfo_context = context; \

    60 		(_ctl)->sinfo_timetolive = 0; \

    61 		(_ctl)->sinfo_tsn = tsn; \

    62 		(_ctl)->sinfo_cumtsn = tsn; \

    63 		(_ctl)->sinfo_assoc_id = sctp_get_associd((in_it)); \

    64 		(_ctl)->length = 0; \

    65 		(_ctl)->held_length = 0; \

    66 		(_ctl)->whoFrom = net; \

    67 		(_ctl)->data = dm; \

    68 		(_ctl)->tail_mbuf = NULL; \

    69 	        (_ctl)->aux_data = NULL; \

    70 		(_ctl)->stcb = (in_it); \

    71 		(_ctl)->port_from = (in_it)->rport; \

    72 		(_ctl)->spec_flags = 0; \

    73 		(_ctl)->do_not_ref_stcb = 0; \

    74 		(_ctl)->end_added = 0; \

    75 		(_ctl)->pdapi_aborted = 0; \

    76 		(_ctl)->some_taken = 0; \

    77 	} \

    78 } while (0)

    82 struct mbuf *

    83 sctp_build_ctl_nchunk(struct sctp_inpcb *inp,

    84 		      struct sctp_sndrcvinfo *sinfo);

    86 void sctp_set_rwnd(struct sctp_tcb *, struct sctp_association *);

    88 uint32_t

    89 sctp_calc_rwnd(struct sctp_tcb *stcb, struct sctp_association *asoc);

    91 void

    92 sctp_express_handle_sack(struct sctp_tcb *stcb, uint32_t cumack,

    93 			 uint32_t rwnd, int *abort_now, int ecne_seen);

    95 void

    96 sctp_handle_sack(struct mbuf *m, int offset_seg, int offset_dup,

    97                  struct sctp_tcb *stcb,

    98                  uint16_t num_seg, uint16_t num_nr_seg, uint16_t num_dup,

    99                  int *abort_now, uint8_t flags,

   100                  uint32_t cum_ack, uint32_t rwnd, int ecne_seen);

   102 /* draft-ietf-tsvwg-usctp */

   103 void

   104 sctp_handle_forward_tsn(struct sctp_tcb *,

   105 			struct sctp_forward_tsn_chunk *, int *, struct mbuf *, int);

   107 struct sctp_tmit_chunk *

   108 sctp_try_advance_peer_ack_point(struct sctp_tcb *, struct sctp_association *);

   110 void sctp_service_queues(struct sctp_tcb *, struct sctp_association *);

   112 void

   113 sctp_update_acked(struct sctp_tcb *, struct sctp_shutdown_chunk *, int *);

   115 int

   116 sctp_process_data(struct mbuf **, int, int *, int,

   117                   struct sockaddr *src, struct sockaddr *dst,

   118                   struct sctphdr *,

   119 		  struct sctp_inpcb *, struct sctp_tcb *,

   120 		  struct sctp_nets *, uint32_t *,

   121 #if defined(__FreeBSD__)

   122                   uint8_t, uint32_t,

   123 #endif

   124                   uint32_t, uint16_t);

   126 void sctp_slide_mapping_arrays(struct sctp_tcb *stcb);

   128 void sctp_sack_check(struct sctp_tcb *, int);

   130 #endif

   131 #endif

The Tor Browser / file revision

netwerk/sctp/src/netinet/sctp_indata.h@97036ab72558

netwerk/sctp/src/netinet/sctp_indata.h