Update cxgb include paths to not require prefixing with dev/cxgb

Submitted by: Chelsio Inc.

Allow cxgb to be unified across versions by making newer features conditional

Submitted by: Chelsio Inc
MFC after: 3 days

Further whitespace and copyright cleanups to minimize the
delta with RELENG_7.

White space cleanups to bring closer to RELENG_7

Remove some dead code along with gratuitous differences between HEAD and 7

Fix issue with recovering from transient jumbo mbuf shortage.

Submitted by: Chelsio Inc.
MFC after: 3 days

Indicate at probe time if device can do offload and which revision it is

MFC after: 3 days

Import ioctl updates for latest rev of cxgbtool

Obtained from: Chelsio Inc.
MFC after: 3 days

Add LRO and MAC statistics to exported sysctls.

Obtained from: Chelsio Inc.
MFC after: 1 week

Remove cxgb private lro implementation and switch to using system implementation.

Obtained from: Chelsio Inc.
MFC after: 1 week

Vendor fix for PHY problem.

Obtained from: Chelsio Inc.
MFC after: 3 days

import vendor fixes to cxgb

MFSVN:
- add / remove clients from cxgb_main.c now
- change ifdef TOE_ENABLED to TCP_OFFLOAD_DISABLE
- update copyrights
- fix transmit data mismatch bug caused by not setting SB_NOCOALESCE
on

MFSVN:
- add / remove clients from cxgb_main.c now
- change ifdef TOE_ENABLED to TCP_OFFLOAD_DISABLE
- update copyrights
- fix transmit data mismatch bug caused by not setting SB_NOCOALESCE
on tx sockbuf on passive connections
- fix receive sequence mismatch bug caused by not setting SB_NOCOALESCE
on rx sockbuf on passive connections
- don't sleep without checking SBS_CANTRCVMORE first
- various ddp ordering fixes

Supported by: Chelsio Inc.

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move cxgb_lt2.[ch] from NIC to TOE
move most offload functionality from NIC to TOE
factor out all socket and inpcb direct access
factor out access to locking in incpb, pcbinfo, and sockbuf

pay attention to default cluster limits when sizing receive queues

fix link management bug and conditionally allow the PHY to be kept on at all times for allowing non-conformant link state checks

- Integrate 1.133 vendor driver changes
- update some copyrights
- add improved support for delayed ack
- fix issue with fec

move remaining binaries in to blob headers

Move firmware in to separate module that can be compiled statically in to the kernel
Add utility for converting future firmware revs to a C header file

- update firmware to 5.0
- add support for T3C
- add DDP support (zero-copy receive)
- fix TOE transmit of large requests
- fix shutdown so that sockets don't remain in CLOSING state indefinitely
- r

- update firmware to 5.0
- add support for T3C
- add DDP support (zero-copy receive)
- fix TOE transmit of large requests
- fix shutdown so that sockets don't remain in CLOSING state indefinitely
- register listeners when an interface is brought up after tom is loaded
- fix setting of multicast filter
- enable link at device attach
- exit tick handler if shutdown is in progress
- add helper for logging TCB
- add sysctls for dumping transmit queues

- note that TOE wxill not be MFC'd until after 7.0 has been finalized

MFC after: 3 days

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Fix lock ordering panic by not calling ether_ioctl with port lock held

Reported by: rrs

- move WR_LEN in to cxgb_adapter.h add PIO_LEN to make intent clearer
- move cxgb_tx_common in to cxgb_multiq.c and rename to cxgb_tx
- move cxgb_tx_common dependencies
- further simplify cxgb_dequeu

- move WR_LEN in to cxgb_adapter.h add PIO_LEN to make intent clearer
- move cxgb_tx_common in to cxgb_multiq.c and rename to cxgb_tx
- move cxgb_tx_common dependencies
- further simplify cxgb_dequeue_packet for the non-multiqueue case
- only launch one service thread per port in the non-multiq case
- remove dead cleaning code from cxgb_sge.c
- simplify PIO case substantially in by returning directly from mbuf collapse
and just using m_copydata
- remove gratuitous m_gethdr in the rx path
- clarify freeing of mbufs in collapse

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Make back pressure visible more quickly, particularly now that we maintain a queue internally

Convert over to using the multiqueue infrastructure although all calls going
through cxgb_start still end up using queue 0

Be more aggressive about tx cleaning - when multiples streams were running the tx
queue could fill up and stop getting cleaned.