netdev - [PATCH 00/10] Doorbell drop recovery for Chelsio T4 iWARP

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Message-Id: <1337335173-3226-1-git-send-email-vipul@chelsio.com>
Date:	Fri, 18 May 2012 15:29:23 +0530
From:	Vipul Pandya <vipul@...lsio.com>
To:	linux-rdma@...r.kernel.org, netdev@...r.kernel.org
Cc:	roland@...estorage.com, davem@...emloft.net, divy@...lsio.com,
	dm@...lsio.com, kumaras@...lsio.com, swise@...ngridcomputing.com,
	Vipul Pandya <vipul@...lsio.com>
Subject: [PATCH 00/10] Doorbell drop recovery for Chelsio T4 iWARP

This patch-series implements doorbell drop recovery for Chelsio T4 iWARP driver.

In the event where DBs are dropped application can get stalled for one or more
reasons. So, we recover RDMA and LLD queues in such an event.
We also take care for handling DB overflow events.

The patch-series also has some bug fixes, adds RDMA debugfs stats and removes
kfifo usage for ID mangement.

The patch-series is based on Roland's infiniband tree (for-next branch), 
and involves changes on drivers/net/ethernet/chelsio/cxgb4 and
drivers/infiniband/hw/cxgb4.

The changes on drivers/infiniband/hw/cxgb4 are dependent on the changes of
drivers/net/ethernet/chelsio/cxgb4 for the T4-iWARP driver to build correctly.
So, we request to merge the entire patch-series through Roland's tree.

Both linux-rdma and netdev are included in this post for review.

The earlier posting of this series was reviewed and can be found at below link.
http://www.mail-archive.com/linux-rdma@vger.kernel.org/msg09606.html

Below is a link where Roland advised to re-post the series.
http://www.spinics.net/lists/netdev/msg187997.html

Vipul Pandya (10):
  cxgb4: Detect DB FULL events and notify RDMA ULD.
  cxgb4: Common platform specific changes for DB Drop Recovery
  cxgb4: DB Drop Recovery for RDMA and LLD queues.
  RDMA/cxgb4: Add debugfs rdma memory stats
  RDMA/cxgb4: Add DB Overflow Avoidance.
  RDMA/cxgb4: disable interrupts in c4iw_ev_dispatch().
  RDMA/cxgb4: DB Drop Recovery for RDMA and LLD queues.
  RDMA/cxgb4: Use vmalloc for debugfs qp dump. Allows dumping thousands
    of qps.
  RDMA/cxgb4: remove kfifo usage
  RDMA/cxgb4: Add query_qp support in driver to query the qp state
    before flushing.

 drivers/infiniband/hw/cxgb4/Makefile            |    2 +-
 drivers/infiniband/hw/cxgb4/cm.c                |   23 ++-
 drivers/infiniband/hw/cxgb4/device.c            |  339 ++++++++++++++++++++++-
 drivers/infiniband/hw/cxgb4/ev.c                |    8 +-
 drivers/infiniband/hw/cxgb4/id_table.c          |  112 ++++++++
 drivers/infiniband/hw/cxgb4/iw_cxgb4.h          |  134 ++++++++--
 drivers/infiniband/hw/cxgb4/mem.c               |   21 +-
 drivers/infiniband/hw/cxgb4/provider.c          |   19 +-
 drivers/infiniband/hw/cxgb4/qp.c                |  105 +++++++-
 drivers/infiniband/hw/cxgb4/resource.c          |  180 +++++-------
 drivers/infiniband/hw/cxgb4/t4.h                |   24 ++
 drivers/infiniband/hw/cxgb4/user.h              |    2 +-
 drivers/net/ethernet/chelsio/cxgb4/cxgb4.h      |   23 ++
 drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c |  235 +++++++++++++++-
 drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h  |   11 +
 drivers/net/ethernet/chelsio/cxgb4/sge.c        |   22 ++-
 drivers/net/ethernet/chelsio/cxgb4/t4_hw.c      |   62 ++++-
 drivers/net/ethernet/chelsio/cxgb4/t4_regs.h    |   53 ++++
 drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h   |   15 +
 19 files changed, 1218 insertions(+), 172 deletions(-)
 create mode 100644 drivers/infiniband/hw/cxgb4/id_table.c

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