Steps to Reproduce:
#ngctl mkpeer ipfw: patch 7 in
#ngctl name ipfw:7 tcp_rst
#ngctl connect ipfw: tcp_rst: 8 out
#ngctl msg tcp_rst: setconfig { count=1 csum_flags=0 ops=[ { mode=8 value=4 length=1 offset=33 } ] }
ngctl: send msg: Argument list too long

It's broken after base r309389 and could be fixed in base r309408, but the first one went to 10.4 and the second one didn't.

PR: 224019
Submitted by: sd@mostnet.ru

MFH: r303611

slite style changes. There is an incoming patch that rewrites a
lot of this module and I want to get the style and whitespace changes in
a separate commit (or maybe more).

PR: 206185
Submitted by: Dmitry Vagin

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Style(9) fixes:
* Sort includes
* Replace #define<SPACE> to #define<TAB>
* Split declarations and initializations
* Split long lines

Requested by: kib
Approved by: kib (mentor)
MFC after: 1 month

New netgraph node ng_patch(4). It performs data modification of packets
passing through. Modifications are restricted to a subset of C language
operations on unsigned integers of 8, 16, 32 or 64 bit size.
These are: set to new value (=), addition (+=), subtraction (-=),
multiplication (*=), division (/=), negation (= -), bitwise AND (&=),
bitwise OR (|=), bitwise eXclusive OR (^=), shift left (<<=),
shift right (>>=). Several operations are all applied to a packet
sequentially in order they were specified by user.

Submitted by: Maxim Ignatenko <gelraen.ua at gmail.com>
Vadim Goncharov <vadimnuclight at tpu.ru>
Discussed with: net@
Approved by: mav (mentor)
MFC after: 1 month