Merge ^/head r320042 through r320397.

Handle sctp_get_next_param() in a consistent way.

This addresses an issue found by Felix Weinrank using libfuzz.
While there, use also consistent nameing.

MFC after: 3 days

Merge ^/head r318658 through r318963.

Use the SCTP_PCB_FLAGS_ACCEPTING flags to check for listeners.

While there, use a macro for checking the listen state to allow for
easier changes if required.

This done to help glebius@ with his li

Use the SCTP_PCB_FLAGS_ACCEPTING flags to check for listeners.

While there, use a macro for checking the listen state to allow for
easier changes if required.

This done to help glebius@ with his listen changes.

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Merge ^/head r317503 through r317807.

Set the DF bit for responses to out-of-the-blue packets.

MFC after: 1 week

MFhead@r313243

Merge ^/head r312968 through r313054.

Ensure that the variable bail is always initialized before used.

MFC after: 1 week

Merge ^/head r312720 through r312893.

Fix a bug where the overhead of the I-DATA chunk was not considered.

MFC after: 1 week

Consistent handling of errors reported from the lower layer.

MFC after: 3 days

Whitespace changes.

The toolchain for processing the sources has been updated. No functional
change.

MFC after: 3 days

Merge ^/head r309519 through r309757.

Don't send multiple SHUTDOWN chunks in a single packet.

Thanks to Felix Weinrank for making me aware of this issue.

MFC after: 1 week

Silence a warning produced by newer versions of gcc.

MFC after: 1 week

Cleanup the names of SSN, SID, TSN, FSN, PPID and MID.

This made a couple of bugs visible in handling SSN wrap-arounds
when using DATA chunks. Now bulk transfer seems to work fine...
This fixes the

Cleanup the names of SSN, SID, TSN, FSN, PPID and MID.

This made a couple of bugs visible in handling SSN wrap-arounds
when using DATA chunks. Now bulk transfer seems to work fine...
This fixes the issue reported in
https://github.com/sctplab/usrsctp/issues/111

MFC after: 1 week

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Merge ^/head r307736 through r308146.

No functional changes, mostly getting the whitespace changes resulting
from an updated formatting tool chain.

MFC after: 1 month

Merge ^/head r306412 through r306905.

Lock the ND prefix list and add refcounting for prefixes.

This change extends the nd6 lock to protect the ND prefix list as well
as the list of advertising routers associated with each prefix. To ha

Lock the ND prefix list and add refcounting for prefixes.

This change extends the nd6 lock to protect the ND prefix list as well
as the list of advertising routers associated with each prefix. To handle
cases where the nd6 lock must be dropped while iterating over either the
prefix or default router lists, a generation counter is used to track
modifications to the lists. Additionally, a new mutex is used to serialize
prefix on-link/off-link transitions. This mutex must be acquired before
the nd6 lock and is held while updating the routing table in
nd6_prefix_onlink() and nd6_prefix_offlink().

Reviewed by: ae, tuexen (SCTP bits)
Tested by: Jason Wolfe <jason@llnw.com>,
Larry Rosenman <ler@lerctr.org>
MFC after: 2 months
Differential Revision: https://reviews.freebsd.org/D8125

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MFhead @ r304815

Merge ^/head r304537 through r304699.

Improve the locking when sending user messages.

First, keep a ref count on the stcb after looking it up, as
done in the other lookup cases.
Second, before looking again at sp, ensure that it is not

Improve the locking when sending user messages.

First, keep a ref count on the stcb after looking it up, as
done in the other lookup cases.
Second, before looking again at sp, ensure that it is not
freed, because the assoc is about to be freed.

MFC after: 3 days

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Merge ^/head r303250 through r304235.