add ipsec(4) interface, which is used for route-based VPN.

man and ATF are added later, please see man for details.

reviewed by christos@n.o, joerg@n.o and ozaki-r@n.o, thanks.
https://mail-index.n

add ipsec(4) interface, which is used for route-based VPN.

man and ATF are added later, please see man for details.

reviewed by christos@n.o, joerg@n.o and ozaki-r@n.o, thanks.
https://mail-index.netbsd.org/tech-net/2017/12/18/msg006557.html

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more IPSEC header cleanup: don't install unneeded headers to userland,
and remove some differences berween KAME and FAST_IPSEC

include <netipsec/ipsec.h> rather than <netinet6/ipsec.h> from userland
where possible, for consistency and compatibility to FreeBSD
(exception: KAME specific statistics gathering in netstat(1) and s

include <netipsec/ipsec.h> rather than <netinet6/ipsec.h> from userland
where possible, for consistency and compatibility to FreeBSD
(exception: KAME specific statistics gathering in netstat(1) and systat(1))

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-consistently use "char *" for the compiled policy buffer in the
ipsec_*_policy() functions, as it was documented and used by clients
-remove "ipsec_policy_t" which was undocumented and only present

-consistently use "char *" for the compiled policy buffer in the
ipsec_*_policy() functions, as it was documented and used by clients
-remove "ipsec_policy_t" which was undocumented and only present
in the KAME version of the ipsec.h header
-misc cleanup of historical artefacts, and to remove unnecessary
differences between KAME ans FAST_IPSEC

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merge ktrace-lwp.

Redo net.inet.* sysctl subtree for fast-ipsec from scratch.
Attach FAST-IPSEC statistics with 64-bit counters to new sysctl MIB.
Rework netstat to show FAST_IPSEC statistics, via sysctl, for
netstat

Redo net.inet.* sysctl subtree for fast-ipsec from scratch.
Attach FAST-IPSEC statistics with 64-bit counters to new sysctl MIB.
Rework netstat to show FAST_IPSEC statistics, via sysctl, for
netstat -p ipsec.

New kernel files:
sys/netipsec/Makefile (new file; install *_var.h includes)
sys/netipsec/ipsec_var.h (new 64-bit mib counter struct)

Changed kernel files:
sys/Makefile (recurse into sys/netipsec/)
sys/netinet/in.h (fake IP_PROTO name for fast_ipsec
sysctl subtree.)
sys/netipsec/ipsec.h (minimal userspace inclusion)
sys/netipsec/ipsec_osdep.h (minimal userspace inclusion)
sys/netipsec/ipsec_netbsd.c (redo sysctl subtree from scratch)
sys/netipsec/key*.c (fix broken net.key subtree)

sys/netipsec/ah_var.h (increase all counters to 64 bits)
sys/netipsec/esp_var.h (increase all counters to 64 bits)
sys/netipsec/ipip_var.h (increase all counters to 64 bits)
sys/netipsec/ipcomp_var.h (increase all counters to 64 bits)

sys/netipsec/ipsec.c (add #include netipsec/ipsec_var.h)
sys/netipsec/ipsec_mbuf.c (add #include netipsec/ipsec_var.h)
sys/netipsec/ipsec_output.c (add #include netipsec/ipsec_var.h)

sys/netinet/raw_ip.c (add #include netipsec/ipsec_var.h)
sys/netinet/tcp_input.c (add #include netipsec/ipsec_var.h)
sys/netinet/udp_usrreq.c (add #include netipsec/ipsec_var.h)

Changes to usr.bin/netstat to print the new fast-ipsec sysctl tree
for "netstat -s -p ipsec":

New file:
usr.bin/netstat/fast_ipsec.c (print fast-ipsec counters)

Changed files:
usr.bin/netstat/Makefile (add fast_ipsec.c)
usr.bin/netstat/netstat.h (declarations for fast_ipsec.c)
usr.bin/netstat/main.c (call KAME-vs-fast-ipsec dispatcher)

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