137 Commits

Author SHA1 Message Date
Randall Stewart
493d8e5a83 More ECN fixes:
1) We now remove ECN-Nonce since it will no longer continue as a I-D
2) Eliminate last_tsn_echo, this tied us to an assoc not the net
   and thus we were not doing m-homing on the ECN-Echo senders side right.
3) Increment the count going out even if the TSN in lower in the pending
   ECN-Echo, this way the receiver knows exactly how many packets were
   marked even with network re-ordering
4) Fix so we DO NOT stop doing delayed sack if a ECN Echo is in queue
MFC after:	1 month
2011-01-31 11:50:11 +00:00
Randall Stewart
a21779f050 Fixes to ECN in SCTP.
1) ECN was on an association basis, this is incorrect and
   will not work with CMT or for that matter if the user
   is sending to multiple addresses. This commit makes
   ECN on a per path basis.
2) Adopt the new format for the ECN internet draft. This also
   maintains compatability with old format chunks as well.
3) Keep track of the real time of a RTT down to micro seconds.
   For some future conditional features (for like a data center
   this is good information to have).
MFC after:	1 month
2011-01-29 19:55:29 +00:00
Randall Stewart
d77e2e42b3 Fix a bug in the way ECN-Echo chunk
sends were being accounted for. The
counting was such that we counted only
when we queued a chunk, not when we sent it.
Now keep an additional counter for queuing and
one for sending.

MFC after:	1 week
2011-01-28 20:49:15 +00:00
Michael Tuexen
90fed1d88e Change infrastructure for SCTP_MAX_BURST to allow compliance
with the latest socket API ID. Especially it can be disabled.

Full compliance needs changing the structure used in the
socket option. Since this breaks the API, it will be a
seperate commit which will not be MFCed to stable/8.

MFC after: 3 months.
2011-01-26 19:49:03 +00:00
Michael Tuexen
f7a77f6fd3 Add stream scheduling support.
This work is based on a patch received from Robin Seggelmann.

MFC after: 3 months.
2011-01-23 19:36:28 +00:00
Michael Tuexen
20b07a4d85 Define and use SCTP_SSN_GE, SCTP_SSN_GT, SCTP_TSN_GE, SCTP_TSN_GT macros
and use them instead of the generic compare_with_wrap.
Retire compare_with_wrap.

MFC after: 3 months.
2010-12-30 21:32:35 +00:00
Michael Tuexen
4a9ef3f833 Code cleanup: Use LIST_FOREACH, LIST_FOREACH_SAFE, TAILQ_FOREACH,
TAILQ_FOREACH_SAFE where appropriate.
No functional change.

MFC after: 3 months.
2010-12-30 16:56:20 +00:00
Michael Tuexen
8ced7318a0 Fix three bugs related to the sequence number wrap-around affecting
the processing of ECNE and ASCONF chunks.

Reviewed by: rrs
MFC after: 3 days.
2010-12-30 16:23:13 +00:00
Michael Tuexen
7c99d56fdf Improve plausibility check in sctp_handle_sack().
Allow cmt_on_off to support values 0 (no CMT), 1 (CMT), and 2 (CMT/RP).

MFC after: 3 months.
2010-12-22 17:59:38 +00:00
Michael Tuexen
e635c7b881 Take out special code for disable CRC computations on
the loopback interface for IPv6. It will be handled
by the loopback interface.
2010-11-14 16:44:18 +00:00
Michael Tuexen
4ce091cda9 Fix more issues with the SACK/NR-SACK generation code.
MFC after: 3 days.
2010-11-12 20:45:21 +00:00
Michael Tuexen
eefcb5cd2a Fix the SACK/NR-SACK generation code.
MFC after: 3 days.
2010-11-11 18:41:03 +00:00
Michael Tuexen
699437a2ba * Fix an accounting bug regarding SACK/NR-SACK chunks.
* Fix the generation of the SACK/NR-SACK gap lists.

MFC after: 3 days.
2010-11-06 13:30:54 +00:00
Michael Tuexen
99ddc825f3 Fix a bug where the wrong PR-SCTP policy was considered.
While there, use always the same code for the check of
TTL expiration.

MFC after: 2 weeks.
2010-09-17 19:20:39 +00:00
Michael Tuexen
25a2a18706 * Implement initial version of send buffer splitting.
* Make send/recv buffer splitting switchable via sysctl.
* While there: Fix some comments.
2010-09-17 16:20:29 +00:00
Michael Tuexen
b3f7949dc5 Remove old debug code.
MFC after: 2 weeks.
2010-09-15 23:56:25 +00:00
Michael Tuexen
9eea4a2da7 Delay the assignment of a path for DATA chunk until they hit
the sent_queue. Honor a given path when the SCTP_ADDR_OVER
flag is set.

MFC after: 2 weeks.
2010-09-15 23:10:45 +00:00
Michael Tuexen
e95307c5c5 * Remove code which has no effect.
* Clean up the handling in sctp_lower_sosend().

MFC after: 3 weeks.
2010-09-09 20:51:23 +00:00
Michael Tuexen
049640c1f0 Implement correct handling of address parameter and
sendinfo for SCTP send calls.

MFC after: 4 weeks.
2010-09-05 20:13:07 +00:00
Randall Stewart
52129fcd78 Fix some CLANG warnings. One clang warning is left
due to the fact that its bogus.. nam->sa_family will
not change from AF_INET6 to AF_INET (but clang
thinks it does ;-D)
2010-09-05 13:41:45 +00:00
Michael Tuexen
9c7635e18b Fix the the SCTP_WITH_NO_CSUM option when used in combination with
interface supporting CRC offload. While at it, make use of the
feature that the loopback interface provides CRC offloading.

MFC after: 4 weeks
2010-08-29 18:50:30 +00:00
Michael Tuexen
e24ea413e0 Bugfix: Do not send a packet drop report in response to a received
INIT-ACK with incorrect CRC.
2010-08-28 21:15:00 +00:00
Michael Tuexen
20083c2eb1 Fix the switching on/off of CMT using sysctl and socket option.
Fix the switching on/off of PF and NR-SACKs using sysctl.
Add minor improvement in handling malloc failures.
Improve the address checks when sending.

MFC after: 4 weeks
2010-08-28 17:59:51 +00:00
Michael Tuexen
87a37484eb Fix a bug where endpoints bound to wildcard addresses where
using addresses not announced to the peer due to address
scoping.

MFC after: 3 weeks
2010-08-05 16:52:13 +00:00
Michael Tuexen
d2604d08d0 Cleanup code.
MFC after: 2 weeks
2010-08-01 08:06:59 +00:00
Randall Stewart
753358d725 Fix the comment block that has the nice
table to really have the nice table :-)

MFC after:	1 month
2010-07-29 12:01:59 +00:00
Randall Stewart
44fbe46280 PR SCTP Bugs. Basically a full sized frame of
PR SCTP FWD-TSN's would not be sent and thus
cause a stalled connection. Also the rwnd
Calculation was also off on the receiver side for
PR-SCTP.
MFC after:	1 month
2010-07-29 11:37:04 +00:00
Michael Tuexen
74e906fa94 Fix a bug where the length of a FORWARD-TSN chunk was set incorrectly in
the chunk. This resulted in malformed frames.
Remove a duplicate assignment.

MFC after: 2 weeks
2010-07-26 09:26:55 +00:00
Randall Stewart
aca14c2aa8 This change does the following:
1) Fix the alignment of a comment.
2) Fix a BUG where we were NOT paying attention
   to the RESEND marking on retransmitting control
   chunks.. and worse we were not decrementing the
   retran count that could cause us to loop forever.
3) Add in the valdiate_no_lock function on invariants
   so that we will really check all ways out to be sure
   a lock does not slip out locked.

MFC after:	1 week.
2010-06-05 21:27:43 +00:00
Randall Stewart
ea9b0170bf Fix an old long time bug in generating a
fwd-tsn. This would appear when greater than
the size of mbuf TSN's would need to be skipped.

MFC after:	3 days
2010-05-12 18:33:25 +00:00
Randall Stewart
83128708b4 More PR-SCTP bugs:
- Make sure that when you kick the streams you add correctly
    using a 16 bit unsigned.
  - Make sure when sending out you allow FWD-TSN to skip over
    and list the ACKED chunks in the stream/seq list (so the
    rcv will kick the stream)
MFC after:	3 days
2010-05-12 18:00:15 +00:00
Michael Tuexen
6dbd88581d Sending a FWDTSN chunk should not affect the retran count.
MFC after: 3 days.
2010-04-25 19:00:37 +00:00
Michael Tuexen
c1589eec14 Use also SCTP/IPv6 checksum offloading in special cases.
MFC after: 2 weeks
2010-04-03 23:51:41 +00:00
Michael Tuexen
b5c164935e * Fix some race condition in SACK/NR-SACK processing.
* Fix handling of mapping arrays when draining mbufs or processing
  FORWARD-TSN chunks.
* Cleanup code (no duplicate code anymore for SACKs and NR-SACKs).
Part of this code was developed together with rrs.
MFC after: 2 weeks.
2010-04-03 15:40:14 +00:00
Randall Stewart
77acdc2565 Fix for NR-Sack code. The code was NOT working properly when
enabled. Basically most of the operations were incorrect causing
bad sacks when you enabled nr-sack. The fixes range across
4 files and unifiy most of the processing so that we only test
nr_sack flags to decide which type of sack to generate.

Optimization left for this is to combine the sack generation
code and make it capable of generating either sack thus shrinking
out a routine.

Reviewed by:	tuexen@freebsd.org
2010-03-24 19:45:36 +00:00
Michael Tuexen
7b470fc31c Fix handling of SHUTDOWN-ACK chunk in COOKIE_WAIT and COOKIE_ECHOED.
MFC after: 1 week
2010-02-20 20:30:40 +00:00
Michael Tuexen
cd55430963 Get rid of a lot of duplicated code for NR-SACK handle.
Generalize the SACK to code handle also NR-SACKs.
2010-01-17 21:00:28 +00:00
Randall Stewart
33141385fc Remove another set of "leaked" ifdefs that somehow found
their way into FreeBSD.
2010-01-17 19:21:50 +00:00
Michael Tuexen
5661a9ed70 Get rid of support of an old version of the SCTP-AUTH draft.
Get rid of unused MD5 code.

MFC after: 1 week
2010-01-16 20:04:17 +00:00
Michael Tuexen
0e891bcdc1 Get rid of unused fields addr_over which is never really used,
only copied around.

Approved by: rrs (mentor)
2009-11-17 23:03:38 +00:00
Michael Tuexen
2ab6846a23 Fix a bug where queued ASCONF messags are not sent out.
Approved by: rrs (mentor)
Obtained from:	Irene Ruengeler
MFC after: 1 month
2009-11-17 13:36:21 +00:00
Michael Tuexen
08abf6399a Improve round robin stream scheduler and cleanup some code.
Approved by: rrs (mentor)
MFC after: 3 days
2009-10-29 17:40:33 +00:00
Michael Tuexen
ac9bce0f3b Improve the round robin stream scheduler.
Approved by: rrs (mentor)
MFC after: 3 days
2009-10-26 19:23:34 +00:00
Michael Tuexen
9dd512290c Use correct arguments when calling SCTP_RTALLOC().
Approved by: rrs (mentor)
MFC after: 0 days
2009-10-08 20:33:12 +00:00
Randall Stewart
806a5b8414 Fix so that round robing stream scheduling works as advertised
MFC after:	0 days
2009-10-08 11:36:06 +00:00
Michael Tuexen
2c19e7fa86 Fix errnos.
Approved by: rrs(mentor)
MFC after: 3 days.
2009-09-20 11:32:22 +00:00
Randall Stewart
482444b4a5 Support for VNET in SCTP (hopefully) 2009-09-17 15:11:12 +00:00
Michael Tuexen
627dfd6df9 Fix a crash when using one-to-one stlye socket in non-blocking
mode and there is no listening server.
PR: 137795
Approved by: re, rrs (mentor)
MFC after:immediately.
2009-08-18 19:58:49 +00:00
Michael Tuexen
810ec53688 * Fix a bug where PR-SCTP settings are ignore when using implicit
association setup.
* Fix a bug where message with illegal stream ids are not deleted.
* Fix a crash when reporting back unsent messages from the send_queue.
* Fix a bug related to INIT retransmission when the socket is already
  closed.
* Fix a bug where associations were stalled when partial delivery API
  was enabled.
* Fix a bug where the receive buffer size was smaller than the
  partial_delivery_point.

Approved by: re, rrs (mentor)
MFC after: One day.
2009-08-15 21:10:52 +00:00
Randall Stewart
d50c1d79d0 Changes to the NR-Sack code so that:
1) All bit disappears
2) The two sets of gaps (nr and non-nr) are
   disjointed, you don't have gaps struck in
   both places.

This adjusts us to coorespond to the new draft. Still
to-do, cleanup the code so that there are only one set
of sack routines (original NR-Sack done by E cloned all
sack code).
2009-06-17 12:34:56 +00:00