Based on the definitions, ilog2(roundup_pow_of_two(x)) ==
order_base_2(x). Replace the former with the latter in a few places to
save a few calculations.

Reviewed by:	bz, kib
Differential Revision:	https://reviews.freebsd.org/D46827

Change 4787572d0580 made if_alloc_domain() never fail, then also do the
wrappers if_alloc(), if_alloc_dev(), and if_gethandle().

No functional change intended.

Reviewed by:	kp, imp, glebius, stevek
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D45740

mlx4 and mlx5 are Ethernet devices and ether_ifattach() does an
unconditional bpfattach(). From commit 16d878cc99ef [1] and on, we
should not check ifp->if_bpf to tell us whether or not we have any bpf
peers that might be interested in receiving packets. And since commit
2b9600b4497b [2], ifp->if_bpf can not be NULL even after the network
interface has been detached.

No functional change intended.

1. 16d878cc99ef Fix the following bpf(4) race condition which can result in a panic
2. 2b9600b4497b Add dead_bpf_if structure, that should be used as fake bpf_if during ifnet detach

Reviewed by:	kp, kib
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D45196

Just use a typedef for spinlock_t, no need to create a useless
structure.

Reviewed by:		bz, emaste
Sponsored by:		Beckhoff Automation GmbH & Co. KG
Differential Revision:	https://reviews.freebsd.org/D45205

After netlinkification, ether_ifattach() requires ifmedia_init() to be
done before it.

PR:	275897
MFC after:	1 week

Reviewed by:	hselasky, zlei
Sponsored by:	Juniper Networks, Inc.
Differential Revision: https://reviews.freebsd.org/D37823

Remove FreeBSD 10 support code.

Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/603
Differential Revision: https://reviews.freebsd.org/D35560

netdev_priv() is a LinuxKPI function which was used with the old ifnet
linux/netdevice.h implementation which was not adaptable to modern
Linux drviers unless rewriting them for ifnet in first place which
defeats the purpose.
Rename the netdev_priv() calls in mlx4 to mlx4_netdev_priv()
returning the ifnet softc to avoid conflicting symbol names
with different implementations in the future.

MFC after:	3 days
Reviewed by:	hselasky, kib
Differential Revision: https://reviews.freebsd.org/D32640

- s/alocated/allocated/
- s/realocated/reallocated/

MFC after:	3 days

This fixes an "invalid cluster size" panic when debugnet is activated.

panic()
m_getzone()
debugnet_mbuf_reinit()
debugnet_any_ifnet_update()
ifhwioctl()
ifioctl()

Submitted by:	ae@
PR:		258923
MFC after:	1 week
Sponsored by:	NVIDIA Networking