Re: [PATCH 00/44] Update RTEMS-specific header files to latest FreeBSD versions

[Eric Blake <eblake at redhat dot com>]

On 08/09/2018 01:08 AM, Sebastian Huber wrote:
> This is an RTEMS-specific patch set. It is a preparation to update the libbsd
> (a port of FreeBSD code to RTEMS, e.g. the network stack) to new FreeBSD
> baseline.
>
> The patch set does two things:
>
> 1. It updates several header files imported from FreeBSD using the commits from
>     FreeBSD.
>
> 2. It removes the kernel space content from some files and includes a
>     <machine/_kernel_*.h> file instead.  This allows to use the Newlib provided
>     header files with different FreeBSD baselines.

This series is full of poorly-formatted commit messages:

> ae@FreeBSD.org (1):
>    Follow the RFC6980 and silently ignore following IPv6 NDP messages
>      that had the IPv6 fragmentation header: o Neighbor Solicitation o
>      Neighbor Advertisement o Router Solicitation o Router Advertisement
>      o Redirect

> glebius (2):
...
>    Garbage collect IFCAP_POLLING_NOCOUNT. It wasn't used since very
>      beginning of polling(4). The module always ignored return value from
>      driver polling handler.

> jhb (4):
>    Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a
>      mapping use an address in the first 2GB of the process's address
>      space. This flag should have the same semantics as the same flag on
>      Linux.
>    Add a new fo_fill_kinfo fileops method to add type-specific
>      information to struct kinfo_file. - Move the various fill_*_info()
>      methods out of kern_descrip.c and into the various file type
>      implementations. - Rework the support for kinfo_ofile to generate a
>      suitable kinfo_file object for each file and then convert that to a
>      kinfo_ofile structure rather than keeping a second, different set of
>      code that directly manipulates type-specific file information. -
>      Remove the shm_path() and ksem_info() layering violations.
>    Retire the unimplemented MAP_RENAME and MAP_NORESERVE flags to
>      mmap(2). Older binaries are still permitted to use these flags.
>    Add a new file operations hook for mmap operations. File type-specific
>      logic is now placed in the mmap hook implementation rather than
>      requiring it to be placed in sys/vm/vm_mmap.c. This hook allows new
>      file types to support mmap() as well as potentially allowing mmap()
>      for existing file types that do not currently support any mapping.
>
> jtl (1):
>    Add the "TCP Blackbox Recorder" which we discussed at the developer
>      summits at BSDCan and BSDCam in 2017.
>
> kib (8):
>    Implement read(2)/write(2) and neccessary lseek(2) for posix shmfd.
>      Add MAC framework entries for posix shm read and write.
>    Add MAP_EXCL flag for mmap(2). It should be combined with MAP_FIXED,
>      and prevents the request from deleting existing mappings in the
>      region, failing instead.
>    Implement process-shared locks support for libthr.so.3, without
>      breaking the ABI. Special value is stored in the lock pointer to
>      indicate shared lock, and offline page in the shared memory is
>      allocated to store the actual lock.
...
>    Add a place for a driver to report rx timestamps in nanoseconds from
>      boot for the received packets.
>    Use hardware timestamps to report packet timestamps for SO_TIMESTAMP
>      and other similar socket options.

> pkelsey (1):
>    This is an implementation of the client side of TCP Fast Open (TFO)
>      [RFC7413]. It also includes a pre-shared key mode of operation in
>      which the server requires the client to be in possession of a shared
>      secret in order to successfully open TFO connections with that
>      server.
>
> rrs (1):
>    This commit brings in a new refactored TCP stack called Rack. Rack
>      includes the following features: - A different SACK processing
>      scheme (the old sack structures are not used). - RACK (Recent
>      acknowledgment) where counting dup-acks is no longer done instead
>      time is used to knwo when to retransmit. (see the I-D) - TLP (Tail
>      Loss Probe) where we will probe for tail-losses to attempt to try
>      not to take a retransmit time-out. (see the I-D) - Burst mitigation
>      using TCPHTPS - PRR (partial rate reduction) see the RFC.

Please reformat the commit messages to have a SHORT summary (60-70 
characters), then a blank line, then the rest of the description, rather 
than diving right in to description that git then uses as the overlong 
subject line.

--
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org