vfs_export: Simplify vfs_export_lookup

If the filesystem is not exported directly return NULL.
If no address is given and filesystem is exported using some default
one return it directly, if it does

vfs_export: Simplify vfs_export_lookup

If the filesystem is not exported directly return NULL.
If no address is given and filesystem is exported using some default
one return it directly, if it doesn't have a default one directly
return NULL.

Reviewed by: kib, bapt
MFC after: 1 week
Sponsored by: Gandi.net
Differential Revision: https://reviews.freebsd.org/D12505

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Merge ^/head r318380 through r318559.

Remove register keyword from sys/ and ANSIfy prototypes

A long long time ago the register keyword told the compiler to store
the corresponding variable in a CPU register, but it is not relevant
for

Remove register keyword from sys/ and ANSIfy prototypes

A long long time ago the register keyword told the compiler to store
the corresponding variable in a CPU register, but it is not relevant
for any compiler used in the FreeBSD world today.

ANSIfy related prototypes while here.

Reviewed by: cem, jhb
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D10193

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Merge ^/head r308491 through r308841.

Fix build when no INET and INET6 in kernel config.

Submitted by: kan
Sponsored by: DARPA, AFRL

Merge ^/head r305687 through r305890.

Renumber license clauses in sys/kern to avoid skipping #3

MFH

Sponsored by: The FreeBSD Foundation

kern: for pointers replace 0 with NULL.

These are mostly cosmetical, no functional change.

Found with devel/coccinelle.

MFH

Sponsored by: The FreeBSD Foundation

Pass the expected struct radix_node_head * to vfs_free_netcred.

No functional change.

struct radix_node_head's first element is rh so this was already
referring to the same address. It was likely

Pass the expected struct radix_node_head * to vfs_free_netcred.

No functional change.

struct radix_node_head's first element is rh so this was already
referring to the same address. It was likely an unintended
s/rnh/&rnh->rh/ change from r294706 as all other rnh_walktree() callers
pass the expected struct radix_node_head * rather than obscurely passing
the address of their first element.

Sponsored by: EMC / Isilon Storage Division

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Fix M_RTABLE memory leak from r274118 (11/2014).

Replace free(M_RTABLE) with rn_detachhead() to match rn_inithead().

This would trigger when reloading NFS exports and was similar to
problems with p

Fix M_RTABLE memory leak from r274118 (11/2014).

Replace free(M_RTABLE) with rn_detachhead() to match rn_inithead().

This would trigger when reloading NFS exports and was similar to
problems with pf reload [1].

PR: 194078 [1]
Sponsored by: EMC / Isilon Storage Division

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MfH @r295202

Expect to see panics in routing code at least now.

Merge ^/head r294599 through r294776.

MFH

Sponsored by: The FreeBSD Foundation

MFP r287070,r287073: split radix implementation and route table structure.

There are number of radix consumers in kernel land (pf,ipfw,nfs,route)
with different requirements. In fact, first 3 don'

MFP r287070,r287073: split radix implementation and route table structure.

There are number of radix consumers in kernel land (pf,ipfw,nfs,route)
with different requirements. In fact, first 3 don't have _any_ requirements
and first 2 does not use radix locking. On the other hand, routing
structure do have these requirements (rnh_gen, multipath, custom
to-be-added control plane functions, different locking).
Additionally, radix should not known anything about its consumers internals.

So, radix code now uses tiny 'struct radix_head' structure along with
internal 'struct radix_mask_head' instead of 'struct radix_node_head'.
Existing consumers still uses the same 'struct radix_node_head' with
slight modifications: they need to pass pointer to (embedded)
'struct radix_head' to all radix callbacks.

Routing code now uses new 'struct rib_head' with different locking macro:
RADIX_NODE_HEAD prefix was renamed to RIB_ (which stands for routing
information base).

New net/route_var.h header was added to hold routing subsystem internal
data. 'struct rib_head' was placed there. 'struct rtentry' will also
be moved there soon.

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Reintegrate head: r274132-r277384

Sponsored by: The FreeBSD Foundation

Reintegrate head revisions r273096-r277147

Sponsored by: The FreeBSD Foundation

Merge from head@274682

Separate radix and routing: use different structures for route and
for other customers.

Introduce new 'struct rib_head' for routing purposes and make
all routing api use it.

Sync to HEAD@r274297.

After the changes in r274118 make NOIP kernels compile by hiding an
otherwise unused variable declaration behind INET6 || INET.

MFC after: 27 days
X-MFS with: r274118

Remove old hack abusing domattach from NFS code.

According to IANA RPC uaddr registry, there are no AFs
except IPv4 and IPv6, so it's not worth being too abstract here.

Remove ne_rtable[AF_MAX+1] a

Remove old hack abusing domattach from NFS code.

According to IANA RPC uaddr registry, there are no AFs
except IPv4 and IPv6, so it's not worth being too abstract here.

Remove ne_rtable[AF_MAX+1] and use explicit per-AF radix tries.
Use own initialization without relying on domattach code.

While I admit that this was one of the rare places in kernel
networking code which really was capable of doing multi-AF
without any AF-depended code, it is not possible anymore to
rely on dom* code.

While here, change terrifying "Invalid radix node head, rn:" message,
to different non-understandable "netcred already exists for given addr/mask",
but less terrifying. Since we know that rn_addaddr() returns NULL if
the same record already exists, we should provide more friendly error.

MFC after: 1 month

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Merge fresh head.

sync from head