Make TCP debug code MP safe.

Protect the global variables in TCP debug code with global mutex.
Add a missing include and also fix the -Wunused-but-set-variable
warning.

OK mvs@

Fix white spaces in TCP.

Delete unnecessary #includes of <sys/domain.h> and/or <sys/protosw.h>

net/if_pppx.c pointed out by jsg@
ok gnezdo@ deraadt@ jsg@ mpi@ millert@

In debug mode print TCP flag names to console correctly.
from Mitchell Krome

Fix RAMDISK build by removing an #ifdef INET6 in tcp_trace().
found the hard way by krw@

The output from tcp debug sockets was incomplete. After detach tp
was NULL and nothing was traced. So save the old tcpcb and use
that to retrieve some information. Note that otb may be freed and
m

The output from tcp debug sockets was incomplete. After detach tp
was NULL and nothing was traced. So save the old tcpcb and use
that to retrieve some information. Note that otb may be freed and
must not be dereferenced. Use a heuristic for cases where the
address family is in the IP header but not provided in the PCB.
OK visa@

show more ...

TCP debug sockets still had code for old TCP timers that were
implemented as slow and fast protocol user requests. Replace that
with a proper timer debug implementation.
OK visa@

Fix printf(9) format strings so that a kernel with TCPDEBUG compiles.
Mark the string variables with TCP debugging names as constant.
OK mpi@

Merge the content of <netinet/tcpip.h> and <netinet6/tcpipv6.h> in
<netinet/tcp_debug.h>.

The IPv6 variant was always included and the IPv4 version is not
present on all systems.

Most of the offend

Merge the content of <netinet/tcpip.h> and <netinet6/tcpipv6.h> in
<netinet/tcp_debug.h>.

The IPv6 variant was always included and the IPv4 version is not
present on all systems.

Most of the offending ports are already fixed, thanks to sthen@!

show more ...

Remove some includes include-what-you-use claims don't
have any direct symbols used. Tested for indirect use by compiling
amd64/i386/sparc64 kernels.

ok tedu@ deraadt@

Yet more #include de-duplication.

ok deraadt@ tedu@

lint is gone, and the 'lint' conditional was never in the implementation
namespace, so stop changing behavior when it's #defined

ok beck@ krw@

pass segment size to userland; ok deraadt@

tcp_trace() expects short, not int; ok deraadt

typo (need to check ti6 instead of ti)

backout following:
>use m_pulldown not m_pullup2. fix some bugs in IPv6 tcp_trace().

PR 3283 fixed (confirmed)

Remove the advertising clause in the UCB license which Berkeley
rescinded 22 July 1999. Proofed by myself and Theo.

use m_pulldown not m_pullup2. fix some bugs in IPv6 tcp_trace().

remove the last of the MI commons

let this compile with TCPDEBUG

ok millert@ deraadt@

whitespace

avoid is_ipv6 construct. a step towards IPv4-less kernel

Cut down on include files.

repair copyright notices for NRL & cmetz; cmetz

make "option TCPDEBUG" kernel compile.
PR1186 from "Robert Mooney" <rjmooney@atl.mediaone.net>.
(printf format change is not bringed in - i'm unsure about it)