Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

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

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Use if_transmit method instead of if_start, this avoids the interface queue lock.
Use the hardware IP checksum verification on receive.

Submitted by: Sriram Gorti (srgorti at netlogicmicro dot com)

XLR/XLS network driver (nlge) updates:

- nlge_ioctl handles IFF_UP and IFF_PROMISC flags
- Translate table code, to enable flow based CPU assignment added
disabled by default (can be enabled by a tunable).
- Changed signature of nlge_port_disable to make it consistent with nlge_port_enable
- Removed TXCSUM and VLAN_HW_TAGGING from i/f capabilities.

Submitted by: Sriram Gorti (srgorti at netlogicmicro dot com)

Fixes for XLR network accelerator driver (nlge).

- Process some tx done messages in the transmit path, to ensure that
the XLR NA tx done FIFO does not overflow.
- Add a message ring handler API to process atmost a given number of
messages from a specified bucket mask. This will be used to process
the tx done messages
- Add a callout to restart transmit in the case transmit gets blocked.
- Update enable_msgring_int() and disable_msgring_int(), remove unused
args and make static.

Obtained from: Sriram Gorti (srgorti at netlogicmicro dot com)

New driver nlge for XLR/XLS Network Accelerator. This will support the XGMAC
and XAUI 10G interfaces in addition RGMII/SGMII 1G interfaces. This driver
is work in progress.

board.c and board.h expanded to include more info.

Only one of rge and nlge can be enabled at a time, rge will be deprecated
when nlge stabilizes.

Submitted by: Sriram Gorti <srgorti at netlogicmicro com>