Commit Graph

30 Commits

Author SHA1 Message Date
Navdeep Parhar
0abd31e2f7 cxgbe(4): Ask the card's firmware to pad up tiny CPLs by encapsulating
them in a firmware message if it is able to do so.  This works out
better for one of the FIFOs in the chip.

MFC after:	5 days
2013-02-26 00:27:27 +00:00
Navdeep Parhar
1cdc889916 Force the 404-BT card (4 x 1G) to use the "uwire" configuration file.
MFC after:	3 days
2013-01-26 03:10:28 +00:00
Navdeep Parhar
e13fe79820 cxgbe: Make the for_each macros safer to use by turning them
into a single statement each.

Submitted by:	Christoph Mallon <christoph dot mallon at gmx dot de>
MFC after:	1 week
2013-01-17 18:52:49 +00:00
Navdeep Parhar
5bb17208d7 cxgbe: Fix the for_each_foo macros -- the last argument should not share
its name with any member of struct sge.

MFC after:	3 days
2013-01-16 23:48:55 +00:00
Navdeep Parhar
b174b65819 cxgbe(4): Add functions to help synchronize "slow" operations (those not
on the fast data path) and use them instead of frobbing the adapter lock
and busy flag directly.

Other changes made while reworking all slow operations:
- Wait for the reply to a filter request (add/delete).  This guarantees
  that the operation is complete by the time the ioctl returns.
- Tidy up the tid_info structure.
- Do not allow the tx queue size to be set to something that's not a
  power of 2.

MFC after:	1 week
2013-01-10 23:56:50 +00:00
Ed Schouten
6b946662d9 Prefer __containerof() over __member2struct().
The former works better with qualifiers, but also properly type checks
the input pointer.
2012-10-19 13:26:40 +00:00
Navdeep Parhar
5323ca8f4b Remove unused item. cxgbe's rx queue's lock was removed a long time ago.
MFC after:	3 days
2012-10-10 16:52:39 +00:00
Navdeep Parhar
5f7a640879 Initialize various DDP parameters in the main cxgbe(4) driver:
- Setup multiple DDP page sizes.  When the driver attempts DDP it will
  try to combine physically contiguous pages into regions of these sizes.

- Set the indicate size such that the payload carried in the indicate can
  be copied in the header mbuf (and the 16K rx buffer can be recycled).

- Set DDP threshold to the max payload that the chip will coalesce and
  deliver to the driver (this is ~16K by default, which is also why the
  offload rx queue is backed by 16K buffers).  If the chip is able to
  coalesce up to the max it's allowed to, it's a good sign that the peer
  is transmitting in bulk without any TCP PSH.

MFC after:	2 weeks
2012-08-16 22:33:56 +00:00
Navdeep Parhar
1f1b5a0f6f Add a routine (t4_set_tcb_field) to update arbitrary parts of a hardware
TCB.  Filters are programmed by modifying the TCB too (via a different
routine) and the reply to any TCB update is delivered via a
CPL_SET_TCB_RPL.  Figure out whether the reply is for a filter-write or
something else and route it appropriately.

MFC after:	2 weeks
2012-08-16 20:15:29 +00:00
Navdeep Parhar
1b4cc91fcc Allow for a different handler for each type of firmware message.
MFC after:	2 weeks
2012-08-16 18:31:50 +00:00
Navdeep Parhar
a1ea9a8276 cxgbe(4): support for IPv6 TSO and LRO.
Submitted by:	bz (this is a modified version of that patch)
2012-06-29 19:51:06 +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
Bjoern A. Zeeb
62b5b6ecd0 MFp4 bz_ipv6_fast:
Significantly update tcp_lro for mostly two things:
  1) introduce basic support for IPv6 without extension headers.
  2) try hard to also get the incremental checksum updates right,
     especially also in the IPv4 case for the IP and TCP header.

  Move variables around for better locality, factor things out into
  functions, allow checksum updates to be compiled out, ...

  Leave a few comments on further things to look at in the future,
  though that is not the full list.

  Update drivers with appropriate #includes as needed for IPv6 data
  type in LRO.

  Sponsored by:	The FreeBSD Foundation
  Sponsored by:	iXsystems

Reviewed by:	gnn (as part of the whole)
MFC After:	3 days
2012-05-24 23:03:23 +00:00
Navdeep Parhar
bfb08b6b6b cxgbe: reduce diffs with other branches.
Will help future MFCs from HEAD.

MFC after:	3 days
2012-02-07 06:21:59 +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
59bc8ce035 - driver ioctl to get SGE context for any given queue.
- sysctls to display the context id, cidx, and pidx of all kinds of queues.

MFC after:	3 days
2011-06-11 04:50:54 +00:00
Navdeep Parhar
9b4d7b4e67 Allow lazy fill up of freelists.
MFC after:	3 days
2011-06-04 23:31:33 +00:00
Navdeep Parhar
56599263c5 - Specialized ingress queues that take interrupts for other ingress
queues.  Try to have a set of these per port when possible, fall back
  to sharing a common pool between all ports otherwise.

- One control queue per port (used to be one per hardware channel).

- t4_eth_rx now handles Ethernet rx only.

- sysctls to display pidx/cidx for some queues.

MFC after:	1 week
2011-05-30 21:34:44 +00:00
Navdeep Parhar
4dba21f17e L2 table code. This is enough to get the T4's switch + L2 rewrite
filters working.  (All other filters - switch without L2 info rewrite,
steer, and drop - were already fully-functional).

Some contrived examples of "switch" filters with L2 rewriting:

# cxgbetool t4nex0  iport 0  dport 80  action switch  vlan +9  eport 3
Intercept all packets received on physical port 0 with TCP port 80 as
destination, insert a vlan tag with VID 9, and send them out of port 3.

# cxgbetool t4nex0  sip 192.168.1.1/32  ivlan 5  action switch \
	vlan =9  smac aa:bb:cc:dd:ee:ff  eport 0
Intercept all packets (received on any port) with source IP address
192.168.1.1 and VLAN id 5, rewrite the VLAN id to 9, rewrite source mac
to aa:bb:cc:dd:ee:ff, and send it out of port 0.

MFC after:	1 week
2011-05-30 21:07:26 +00:00
Navdeep Parhar
f7dfe243b4 - Move all Ethernet specific items from sge_eq to sge_txq. sge_eq is
now a suitable base for all kinds of egress queues.

- Add control queues (sge_ctrlq) and allocate one of these per hardware
  channel.  They can be used to program filters and steer traffic (and
  more).

MFC after:	1 week
2011-04-19 22:08:28 +00:00
Navdeep Parhar
2be67d2948 Fix a couple of bad races that can occur when a cxgbe interface is taken
down.  The ingress queue lock was unused and has been removed as part of
these changes.

- An in-flight egress update from the SGE must be handled before the
  queue that requested it is destroyed.  Wait for the update to arrive.

- Interrupt handlers must stop processing rx events for a queue before
  the queue is destroyed.  Events that have not yet been processed
  should be ignored once the queue disappears.

MFC after:	1 week
2011-04-15 03:09:27 +00:00
Navdeep Parhar
6b49a4ece8 There is no need to request a tx credit flush if such a request is already
pending.

MFC after:	3 days
2011-04-14 20:06:23 +00:00
Navdeep Parhar
a91fea93ad Do not over-allocate MSI interrupts for the case where each ingress
queue has its own interrupt.  If the exact number that we need is not a
power of 2 and we're using MSI, then switch to interrupt multiplexing.

While here, replace the magic numbers with something more readable.

MFC after:	3 days
2011-03-24 01:03:01 +00:00
Navdeep Parhar
9458619309 cxgbe shouldn't directly know of the UMA zones where network buffers
come from.

MFC after:	1 week
2011-03-08 03:04:07 +00:00
Navdeep Parhar
7d29df5931 Tweaks for rx:
- everything related to LRO should be in #ifdef INET blocks
- reorder sge_iq's fields so that the most frequently used are all together
- pull all rx code into t4_intr_data directly
- let go of the ingress queue lock when passing up data
- refill the freelist only if it is short of at least 32 buffers
2011-03-05 03:42:03 +00:00
Navdeep Parhar
29ca78e104 Store the ifnet rather than the port_info in each txq and rxq struct.
MFC after:	1 week
2011-03-05 03:27:14 +00:00
Navdeep Parhar
aa2457e17c A txpkts work request should have a valid FID.
MFC after:	1 week
2011-03-05 03:18:56 +00:00
Navdeep Parhar
ecb79ca4f6 Resume tx immediately in response to an SGE egress update from the hardware.
MFC after:	1 week
2011-03-05 03:06:38 +00:00
Navdeep Parhar
4a1bd0e4e8 Fix incorrect assertion.
MFC after:	3 days
2011-03-05 03:01:14 +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