bsd.own.mk: rename GCC_NO_* to CC_WNO_*

Rename compiler-warning-disable variables from
GCC_NO_warning
to
CC_WNO_warning
where warning is the full warning name as used by the compiler.

GCC_NO_IMPLICIT_FALLTHRU is CC_WNO_IMPLICIT_FALLTHROUGH

Using the convention CC_compilerflag, where compilerflag
is based on the full compiler flag name.

new GCC_NO_* uses for warning issues. most of the users of the new
GCC_NO_RETURN_LOCAL_ADDR are bugs in GCC itself, not the code.

branches: 1.34.4;
rump: Add nd.c to libnet

Add if_stats.c to rumpnet.

branches: 1.32.2;
introduce some common variables for use in GCC warning disables:

GCC_NO_FORMAT_TRUNCATION -Wno-format-truncation (GCC 7/8)
GCC_NO_STRINGOP_TRUNCATION -Wno-stringop-truncation (GCC 8)
GCC_NO_STRINGOP_OVERFLOW -Wno-stringop-overflow (GCC 8)
GCC_NO_CAST_FUNCTION_TYPE -Wno-cast-function-type (GCC 8)

use these to turn off warnings for most GCC-8 complaints. many
of these are false positives, most of the real bugs are already
commited, or are yet to come.


we plan to introduce versions of (some?) of these that use the
"-Wno-error=" form, which still displays the warnings but does
not make it an error, and all of the above will be re-considered
as either being "fix me" (warning still displayed) or "warning
is wrong."

PR kern/53562

Add ether_sw_offload_[tr]x: handle TX/RX offload options in software.
Since this violates separation b/w L2 and L3/L4, new files are added
rather than having the routines in sys/net/if_ethersubr.c.

OK msaitoh thorpej

branches: 1.30.12; 1.30.14;
Fix build (undefined reference to `rumpns_pfil_init' on usr.sbin/puffs/rump_nfs)

branches: 1.29.2;
Add ifam_pid and ifam_addrflags to ifa_msghdr.
Re-version RTM_NEWADDR, RTM_DELADDR, RTM_CHGADDR and NET_RT_IFLIST.
Add compat code for old version.

branches: 1.28.2;
Rump-ify if_pppoe

From s-yamaguchi@IIJ

Add a COMMENT describing what each component roughly does.

"make describe" prints the comment.

Requested/inspired by Vincent Schwarzer on rumpkernel-users

Hook up lltable/llentry with the kernel (and rumpkernel)

It is built and initialized on bootup, but there is no user for now.

Most codes in in.c are imported from FreeBSD as well as lltable/llentry.

purge rump/net of component-specific opt directories

add ioconf files for pseudo device attach prototypes

Rename RUMP_COMPAT to RUMP_NBCOMBAT to better signify what the
variable does.

COMPAT_OIF{DATA,REQ} are defined by compat/sys/sockio.h if need be,
don't define them here unconditionally.

Build compat code only when specified by RUMP_COMPAT

branches: 1.20.6;
rename component.c -> net_component.c

Separate inet and inet6, allows inet6-only rump kernels.

Add librumpnet_netmpls that provides MPLS features into rump kernels
ok'ed pooka@

branches: 1.17.2; 1.17.4;
cosmetic: put portalgo.c in the conceptually right place

branches: 1.16.2;
no need to include code which is already provided by the faction base

Adjust to rfc6056 rename to portalgo

rumpnet_net: add pfil.c

branches: 1.13.2; 1.13.6; 1.13.8;
add rfc6056.c

Hide the radix-trie implementation of the forwarding table so that we
will have an easier time replacing it with something different, even if
it is a second radix-trie implementation.

sys/net/route.c and sys/net/rtsock.c no longer operate directly on
radix_nodes or radix_node_heads.

Hopefully this will reduce the temptation to implement multipath or
source-based routing using grotty hacks to the grotty old radix-trie
code, too. :-)

Add a new AF/PF_ROUTE which is 64-bit clean which makes the routing socket
interface (and its associated sysctls) act identically for both 32 and 64 bit
programs. The old unclean one remains for backward compatibility.

branches: 1.10.2; 1.10.4;
Actually, unlike e.g. carp, bridge can be its own component since
it doesn't want to join the protosw party. We can deal with other
linkhappy stuff with weak symbols.

(where is our modular networking stack?)

Support bridging. As usual, it would be nice if this could be a
separate component, but King Ifdef doesn't let us.

support compat ioctl's (OOOOOlalaSIOC stuff)

branches: 1.7.4;
Use linker script to make __start/stop_link_set_modules be present
in libs built with binutils >=2.19. This is a less error-prone
method than the previous where components had to be tagged in the
Makefile as modules (and if they weren't, things broke. and vice
versa).

binutils 2.19 has changed the old behaviour of defining __start_SECTNAME
for orphaned sections to using PROVIDE. What this means is that
unless a rump component internally references that symbol, it will
not be included in the component shared library, and hence cannot
be referenced when the component is loaded. Add a workaround which
works both with 2.16 and 2.19: force a reference to the __start
symbol internally and hence retain it in the resulting library.

Use a bunch of weak symbols to determine which network components
are present. This works in userspace as opposed relying in link
sets, which fail miserably. Later, when the networking stack
becomes modularized, we can move to a dynamic scheme like with file
systems.

Also, this change allows us to do proper autoconfig, namely attach
the loopback interface iff it is present.

branches: 1.4.2; 1.4.4;
-fno-strict-aliasing is now set globally for rump

branches: 1.3.4;
Heave-ho radix.c from librumpnet_net to librumpnet.

branches: 1.2.2; 1.2.4;
Deal with the ld.so/linkset brokenness and compile all of libnet
and libnetinet into a big bunch for now. If they were separate
libraries, the DOMAIN_DEFINE() in the latter on the linkline would
not get noticed at "boot" time because of the abovementioned
brokenness. One of these days I'll add code to dlopen() the
libraries and resplit them, but this will allow things to work
until then.

branches: 1.1.2;
Provide essentially sys/net as a rump library.