- MFC r198320:
Introduce new option BCE_JUMBO_HDRSPLIT that allows user to enable header
in bce(4) instead of (ab)using ZERO_COPY_SOCKETS that was not
into if_bce.c anyway. It is disabled by d

- MFC r198320:
Introduce new option BCE_JUMBO_HDRSPLIT that allows user to enable header
in bce(4) instead of (ab)using ZERO_COPY_SOCKETS that was not
into if_bce.c anyway. It is disabled by default.

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MFC @199204

- Introduce new option BCE_JUMBO_HDRSPLIT that allows user to enable header
splitting in bce(4) instead of (ab)using ZERO_COPY_SOCKETS that was not
propagated into if_bce.c anyway. It is disable

- Introduce new option BCE_JUMBO_HDRSPLIT that allows user to enable header
splitting in bce(4) instead of (ab)using ZERO_COPY_SOCKETS that was not
propagated into if_bce.c anyway. It is disabled by default.

Approved by: davidch
MFC after: 3 days

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Merge from head

- MFC

- Added code to read bootcode firwmare version.
- Created dedicated shared memory access routines.

MFC after: One week

Merge from HEAD

- Fixed incorrect packet length problem caused be earlier change to
support ZERO_COPY_SOCKETS.
- Created #define for context initialization retry count.

MFC after: 1 week

Update the projects tree to a newer FreeBSD current.

- Updated firmware to latest 4.6.X release.
- Added missing firmware for 5709 A1 controllers.
- Changed some debug statistic variable names to be more consistent.

Submitted by: davidch
MFC after: Tw

- Updated firmware to latest 4.6.X release.
- Added missing firmware for 5709 A1 controllers.
- Changed some debug statistic variable names to be more consistent.

Submitted by: davidch
MFC after: Two weeks

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- Update copyright to 2009.
- Only enable split header operation when ZERO_COPY_SOCKETS is enabled in
the kernel.

Submitted by: davidch
MFC after: 1 week

integrate from head@185615

- bump __FreeBSD version to reflect added buf_ring, memory barriers,
and ifnet functions

- add memory barriers to <machine/atomic.h>
- update drivers to only conditionally define their own

- add

- bump __FreeBSD version to reflect added buf_ring, memory barriers,
and ifnet functions

- add memory barriers to <machine/atomic.h>
- update drivers to only conditionally define their own

- add lockless producer / consumer ring buffer
- remove ring buffer implementation from cxgb and update its callers

- add if_transmit(struct ifnet *ifp, struct mbuf *m) to ifnet to
allow drivers to efficiently manage multiple hardware queues
(i.e. not serialize all packets through one ifq)
- expose if_qflush to allow drivers to flush any driver managed queues

This work was supported by Bitgravity Inc. and Chelsio Inc.

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- Updated support for 5716.
- Added some additional code for debug builds.
- Fixed a problem printing physical memory on 64bit system during debugging.
- Modified some of the context memory and mailb

- Updated support for 5716.
- Added some additional code for debug builds.
- Fixed a problem printing physical memory on 64bit system during debugging.
- Modified some of the context memory and mailbox register names to more
clearly distinguish their use.
- Added memory barriers for Intel CPUs when accessing host memory data
structures which are written by hardware.

MFC after: Two weeks.

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- Added support for BCM5709 and BCM5716 controllers.

MFC after: 2 weeks

- Fixed kern/123696 by increasing firmware timeout value from 100 to 1000.
- Fixed a problem on i386 architecture when using split header/jumbo frame
firmware caused by hardware alignment requireme

- Fixed kern/123696 by increasing firmware timeout value from 100 to 1000.
- Fixed a problem on i386 architecture when using split header/jumbo frame
firmware caused by hardware alignment requirements.
- Added #define BCE_USE_SPLIT_HEADER to allow the feature to be enabled/
disabled. Enabled by default.

PR: kern/123696
MFC after: 2 weeks

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- Fixed a problem with the send chain consumer index which would cause
TX traffic to sit in the send chain until a received packet kick
started the interrupt handler. This would cause extremely

- Fixed a problem with the send chain consumer index which would cause
TX traffic to sit in the send chain until a received packet kick
started the interrupt handler. This would cause extremely slow
performance when used with NFS over UDP.
- Removed untested polling code.
- Updated copyright year in the file header.
- Removed inadvertent ^M's created by DOS text editor.

MFC after: 2 weeks

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MFC after: 4 weeks

- Added loose RX MTU functionality to allow frames larger than 1500 bytes
to be accepted even though the interface MTU is set to 1500.
- Implemented new TCP header splitting/jum

MFC after: 4 weeks

- Added loose RX MTU functionality to allow frames larger than 1500 bytes
to be accepted even though the interface MTU is set to 1500.
- Implemented new TCP header splitting/jumbo frame support which uses
two chains for receive traffic rather than the original single recevie
chain.
- Added additional debug support code.

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- Fixed a problem that would cause kernel panics and "bce0: discard frame .."
errors (especially when jumbo frames are enabled or in low memory systems)
because the RX chain was corrupted when an

- Fixed a problem that would cause kernel panics and "bce0: discard frame .."
errors (especially when jumbo frames are enabled or in low memory systems)
because the RX chain was corrupted when an mbuf was mapped to an unexpected
number of buffers.
- Fixed a problem that would cause kernel panics when an excessively
fragmented TX mbuf couldn't be defragmented and was released by
bce_tx_encap().

Approved by: re(hrs)
MFC after: 7 days

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- Migrated IPMI fix from RELENG_6.
- Added additional debug code.

New Features:
- Added 2.5G support for BCM5708S.

MFC after: 4 weeks

- Added TSO support
- Updated firmware to latest release (v3.4.8) to fix TSO + jumbo frame lockup
- Added MSI (hw.bce.msi_enable) and TSO (hw.bce.tso_enable) sysctls
- Fixed kernel panic when MSI is

- Added TSO support
- Updated firmware to latest release (v3.4.8) to fix TSO + jumbo frame lockup
- Added MSI (hw.bce.msi_enable) and TSO (hw.bce.tso_enable) sysctls
- Fixed kernel panic when MSI is used and module is unloaded
- Added several new debug routines
- Removed slack space for RX/TX chains since it only covers sloppy coding
- Fixed a potential problem when programming jumbo MTU size in hardware
- Various other comment changes

MFC after: 4 weeks

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MFC after: 2 weeks

Updated copyright date to 2007.

Tested with BCM5706 A3.

Added ID for BCM5708 B2.

Removed unused driver version string.

Modified BCE_PRINTF macro to automatically fill-in the s

MFC after: 2 weeks

Updated copyright date to 2007.

Tested with BCM5706 A3.

Added ID for BCM5708 B2.

Removed unused driver version string.

Modified BCE_PRINTF macro to automatically fill-in the sc pointer.

Fixed a kernel panic when the driver was loaded as a module from the
command-line because the MII bus pointer was null (i.e. the MII bus
hadn't been enumerated yet).

Added fix proposed by Vladimir Ivanov <wawa@yandex-team.ru> to prevent
driver state corruption when releasing the lock during the ISR in
bce_rx_intr() to send packets up the stack.

Added new TX chain and register read sysctl interfaces for debugging.

Cleaned up formatting for various other debug routines.

Added a new statistic maintained by firmware which tracks the number
of received packets dropped because no receive buffers are available.

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- Instead of if_watchdog/if_timer interface use our own timer
that piggybacks on bce_tick() callout.
- Instead of unconditionally resetting the controller, try to
skip the reset in case we got

- Instead of if_watchdog/if_timer interface use our own timer
that piggybacks on bce_tick() callout.
- Instead of unconditionally resetting the controller, try to
skip the reset in case we got a pause frame, like em(4) did.
- Lock bce_tick() using callout_init_mtx().

Discussed with/Reviewed by: glebius, scottl, davidch

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Due to an incorrect macro, it appears that this driver has always been
accidentally truncating off the VLAN tag field in the TX descriptor. Fix
this by splitting up the vlan_tag and flags fields int

Due to an incorrect macro, it appears that this driver has always been
accidentally truncating off the VLAN tag field in the TX descriptor. Fix
this by splitting up the vlan_tag and flags fields into separate fields,
and handling them appropriately.

Sponsored by: Ironport
MFC After: 3 days

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