Cleanup the iterator code, remove code that is never executed.

Approved by: re
MFC after: 1 month.

IFC @ r225592

sys/dev/bvm/bvm_console.c - move up to the new alt-break order.

Fix the handling of the flowlabel and DSCP value in the SCTP_PEER_ADDR_PARAMS
socket option.
Honor the net.inet6.ip6.auto_flowlabel sysctl setting.

Approved by: re (bz)
MFC after: 1 month.

Integrate FreeBSD/head into projects/zfsd/head as of SVN revision 224870.

Add support for the spp_dscp field in the SCTP_PEER_ADDR_PARAMS
socket option. Backwards compatibility is provided by still
supporting the spp_ipv4_tos field.

Approved by: re@
MFC after: 2 months.

The result of a joint work between rrs@ and myself at the IETF:
* Decouple the path supervision using a separate HB timer per path.
* Add support for potentially failed state.
* Bring back RTO.min to

The result of a joint work between rrs@ and myself at the IETF:
* Decouple the path supervision using a separate HB timer per path.
* Add support for potentially failed state.
* Bring back RTO.min to 1 second.
* Accept packets on IP-addresses already announced via an ASCONF
* While there: do some cleanups.

Approved by: re@
MFC after: 2 months.

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Integrate from Head into ZFSD feature branch as of revision r224141.

IFC @ r222830

MFC

Add support for the newly added SCTP API.
In particular add support for:
* SCTP_SNDINFO, SCTP_PRINFO, SCTP_AUTHINFO, SCTP_DSTADDRV4, and
SCTP_DSTADDRV6 cmsgs.
* SCTP_NXTINFO and SCTP_RCVINFO cmgs.

Add support for the newly added SCTP API.
In particular add support for:
* SCTP_SNDINFO, SCTP_PRINFO, SCTP_AUTHINFO, SCTP_DSTADDRV4, and
SCTP_DSTADDRV6 cmsgs.
* SCTP_NXTINFO and SCTP_RCVINFO cmgs.
* SCTP_EVENT, SCTP_RECVRCVINFO, SCTP_RECVNXTINFO and SCTP_DEFAULT_SNDINFO
socket option.
* Special association ids (SCTP_FUTURE_ASSOC, ...)
* sctp_recvv() and sctp_sendv() functions.

MFC after: 1 month.

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Merge svn+ssh://svn.freebsd.org/base/head@219553

Tunes and fixes the new DC-CC to seem to hit the
right mix. Still may need some tweaks but it
appears to almost not give away too much to an
RFC2581 flow, but can really minimize the amount of
buffe

Tunes and fixes the new DC-CC to seem to hit the
right mix. Still may need some tweaks but it
appears to almost not give away too much to an
RFC2581 flow, but can really minimize the amount of
buffers used in the net.

MFC after: 3 months

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Adds a new Congestion Control that helps reduce
the RTT that a flow will build up in buffers in
transit. It is a slight modification to RFC2581
but is more friendly i.e. less aggressive.

MFC after:

Adds a new Congestion Control that helps reduce
the RTT that a flow will build up in buffers in
transit. It is a slight modification to RFC2581
but is more friendly i.e. less aggressive.

MFC after: 3 months

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Improvements to CC modules:
1) Add four new points that allow you to get more information
to cc algo's
2) Fix the case where user changes module on a existing TCB, in
such a case, the initializ

Improvements to CC modules:
1) Add four new points that allow you to get more information
to cc algo's
2) Fix the case where user changes module on a existing TCB, in
such a case, the initialization module needs to be called on all nets.
3) Move htcp_cc structure to a union that other modules can use.
4) Add 5th point for get/set socket options for cc_module specific options

MFC after: 2 months

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* Cleanup the code computing the retransmission timeout.
* Fix an initialization bug for the scaled variance of the RTO.

MFC after: 3 months.

Merge svn+ssh://svn.freebsd.org/base/head@218816

Fix bugs related to M_FLOWID:
* Store the flowid when receiving an SCTP/IPv6 packet.
* Store the flowid when receiving an SCTP packet with wrong CRC.
* Initilize flowid correctly.
* Put test code und

Fix bugs related to M_FLOWID:
* Store the flowid when receiving an SCTP/IPv6 packet.
* Store the flowid when receiving an SCTP packet with wrong CRC.
* Initilize flowid correctly.
* Put test code under INVARIANTS.
MFC after: 3 months.

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1) Track when flowid does get set.
MFC after: 3 months

Add support for M_FLOWID.

1) Typo correction in comments and one spacing change.
2) Mass update to all copyrights.
MFC after: 3 Months

Fix several bugs in the stream schedulers.
From Robin Seggelmann.

MFC after: 3 months.

Adds an experimental option to create a pool of
threads. These serve as input threads and are queued
packets based on the V-tag number. This is similar to
what a modern card can do with queue's for T

Adds an experimental option to create a pool of
threads. These serve as input threads and are queued
packets based on the V-tag number. This is similar to
what a modern card can do with queue's for TCP... but
alas modern cards know nothing about SCTP.

MFC after: 3 months (maybe)

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1) Allow a chunk to track the cwnd it was at when sent.
2) Add separate max-bursts for retransmit and hb. These
are set to sysctlable values but not settable via the
socket api. This makes sure

1) Allow a chunk to track the cwnd it was at when sent.
2) Add separate max-bursts for retransmit and hb. These
are set to sysctlable values but not settable via the
socket api. This makes sure we don't blast out HB's or
fast-retransmits.
3) Determine on the first data transmission on a net if
its local-lan (by being under or over a RTT). This
can later be used to think about different algorithms
based on locallan vs big-i (experimental)
4) The cwnd should NOT be allowed to grow when an ECNEcho
is seen (TCP has this same bug). We fix this in SCTP
so an ECNe being seen prevents an advance of cwnd.
5) CWR's should not be sent multiple times to the
same network, instead just updating the TSN being
transmitted if needed.

MFC after: 1 Month

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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

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

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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

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

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