Commit Graph

13 Commits

Author SHA1 Message Date
Navdeep Parhar
e3148e46b2 cxgbei: Hardware accelerated iSCSI target and initiator for TOE capable
cards supported by cxgbe(4).

On the host side this driver interfaces with the storage stack via the
ICL (iSCSI Common Layer) in the kernel.  On the wire the traffic is
standard iSCSI (SCSI over TCP as per RFC 3720/7143 etc.) that
interoperates with all other standards compliant implementations.  The
driver is layered on top of the TOE driver (t4_tom) and promotes
connections being handled by t4_tom to iSCSI ULP (Upper Layer Protocol)
mode.  Hardware assistance in this mode includes:

- Full TCP processing.
- iSCSI PDU identification and recovery within the TCP stream.
- Header and/or data digest insertion (tx) and verification (rx).
- Zero copy (both tx and rx).

Man page will follow in a separate commit in a couple of weeks.

Relnotes:	Yes
Sponsored by:	Chelsio Communications
2015-12-26 06:05:21 +00:00
Navdeep Parhar
85dc477798 cxgbe(4): Add a minimal if_cxl module that pulls in the real driver as
a dependency.  This ensures "ifconfig cxl<n> ..." does the right thing
even when it's run with no driver loaded.

if_cxl.ko is the tiniest module in /boot/kernel.

MFC after:	2 weeks
2015-02-06 01:10:04 +00:00
Warner Losh
df3394b3de Remove dependence on source tree options. Move all kernel module
options into kern.opts.mk and change all the places where we use
src.opts.mk to pull in the options. Conditionally define SYSDIR and
use SYSDIR/conf/kern.opts.mk instead of a CURDIR path. Replace all
instances of CURDIR/../../etc with STSDIR, but only in the affected
files.

As a special compatibility hack, include bsd.owm.mk at the top of
kern.opts.mk to allow the bare build of sys/modules to work on older
systems. If the defaults ever change between 9.x, 10.x and current for
these options, however, you'll wind up with the host OS' defaults
rather than the -current defaults. This hack will be removed when
we no longer need to support this build scenario.

Reviewed by: jhb
Differential Revision: https://phabric.freebsd.org/D529
2014-08-11 14:50:49 +00:00
Navdeep Parhar
88998d7afc Improve compliance with style.Makefile(5).
MFC after:	2 weeks
2014-08-01 01:30:16 +00:00
Warner Losh
c6063d0da8 Use src.opts.mk in preference to bsd.own.mk except where we need stuff
from the latter.
2014-05-06 04:22:01 +00:00
Edward Tomasz Napierala
421b30efb5 Don't build krping.ko, iw_cxgb.ko, and iw_cxgbe.ko, if MK_OFED=no
(the default).  They build, but are unloadable, due to missing ibcore.ko.

Sponsored by:	FreeBSD Foundation
2013-10-18 09:17:35 +00:00
Navdeep Parhar
fb93f5c47f iw_cxgbe: iWARP driver for Chelsio T4/T5 chips. This is a straight port
of the iw_cxgb4 found in OFED distributions.

Obtained from:	Chelsio
2013-10-17 18:37:25 +00:00
Navdeep Parhar
f72b68a1bf - Include the T5 firmware with the driver.
- Update the T4 firmware to the latest.
- Minor reorganization and updates to the version macros, etc.

Obtained from:	Chelsio
MFC after:	1 day
2013-07-03 23:52:15 +00:00
Navdeep Parhar
d14b0ac129 cxgbe(4): Add support for Chelsio's Terminator 5 (aka T5) ASIC. This
includes support for the NIC and TOE features of the 40G, 10G, and
1G/100M cards based on the T5.

The ASIC is mostly backward compatible with the Terminator 4 so cxgbe(4)
has been updated instead of writing a brand new driver.  T5 cards will
show up as cxl (short for cxlgb) ports attached to the t5nex bus driver.

Sponsored by:	Chelsio
2013-03-30 02:26:20 +00:00
Navdeep Parhar
09fe63205c - Updated TOE support in the kernel.
- Stateful TCP offload drivers for Terminator 3 and 4 (T3 and T4) ASICs.
  These are available as t3_tom and t4_tom modules that augment cxgb(4)
  and cxgbe(4) respectively.  The cxgb/cxgbe drivers continue to work as
  usual with or without these extra features.

- iWARP driver for Terminator 3 ASIC (kernel verbs).  T4 iWARP in the
  works and will follow soon.

Build-tested with make universe.

30s overview
============
What interfaces support TCP offload?  Look for TOE4 and/or TOE6 in the
capabilities of an interface:
# ifconfig -m | grep TOE

Enable/disable TCP offload on an interface (just like any other ifnet
capability):
# ifconfig cxgbe0 toe
# ifconfig cxgbe0 -toe

Which connections are offloaded?  Look for toe4 and/or toe6 in the
output of netstat and sockstat:
# netstat -np tcp | grep toe
# sockstat -46c | grep toe

Reviewed by:	bz, gnn
Sponsored by:	Chelsio communications.
MFC after:	~3 months (after 9.1, and after ensuring MFC is feasible)
2012-06-19 07:34:13 +00:00
Navdeep Parhar
733b92779e Many updates to cxgbe(4)
- Device configuration via plain text config file.  Also able to operate
  when not attached to the chip as the master driver.

- Generic "work request" queue that serves as the base for both ctrl and
  ofld tx queues.

- Generic interrupt handler routine that can process any event on any
  kind of ingress queue (via a dispatch table).

- A couple of new driver ioctls.  cxgbetool can now install a firmware
  to the card ("loadfw" command) and can read the card's memory
  ("memdump" and "tcb" commands).

- Lots of assorted information within dev.t4nex.X.misc.*  This is
  primarily for debugging and won't show up in sysctl -a.

- Code to manage the L2 tables on the chip.

- Updates to cxgbe(4) man page to go with the tunables that have changed.

- Updates to the shared code in common/

- Updates to the driver-firmware interface (now at fw 1.4.16.0)

MFC after:	1 month
2011-12-16 02:09:51 +00:00
Navdeep Parhar
230abe75dc Allow multiple modules within sys/modules/cxgbe. The first one is if_cxgbe.
MFC after:	3 days
2011-04-01 00:25:32 +00:00
Navdeep Parhar
54e4ee7163 cxgbe(4) - NIC driver for Chelsio T4 (Terminator 4) based 10Gb/1Gb adapters.
MFC after:	3 weeks
2011-02-18 08:00:26 +00:00