Commit Graph

24 Commits

Author SHA1 Message Date
Eric Dumazet 13707f9e5e drivers/net: remove some rcu sparse warnings
Add missing __rcu annotations and helpers.
minor : Fix some rcu_dereference() calls in macvtap

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-27 15:02:57 -08:00
Michael Chan e1928c86c4 cnic: Add FCoE support on 57712
- Connection ID (cid) management
- Slow-path command and response support
- Update version to 2.2.11.

Reviewed-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-23 11:44:34 -08:00
Michael Chan e21ba414ee cnic: Add kcq2 support on 57712
The kcq2 (2nd kernel work queue) is used by FCoE on 57712 devices.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-23 11:44:33 -08:00
Michael Chan 4aacb7afb6 cnic: Support NIC Partition mode
Add a common function cnic_read_bnx2x_iscsi_mac() to read the iSCSI
MAC address at any specified shared memory location.  In NIC Partition
mode, we need to get the MAC address from the MF_CFG area of shared
memory.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-23 11:44:31 -08:00
Michael Chan 5159fdc1e6 cnic: Use proper client and connection IDs on iSCSI ring
Use the IDs specified by the bnx2x driver when initializing the ring.
We don't have to make code changes when these IDs change in the future.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-23 11:44:30 -08:00
Michael Chan 9b09336072 cnic: Fix iSCSI TCP port endian order.
Pass the TCP port parameter for iSCSI connections to the firmware in
proper endian order.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-23 11:44:26 -08:00
Michael Chan ee87a82a28 cnic: Add support for 57712 device
Add new interrupt ack functions and other hardware interface logic to
support the new device.

Update version to 2.2.6.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-14 10:45:56 -07:00
Michael Chan cd801536c2 cnic: Add cnic_uio_dev struct
and put all uio related structures and ring buffers in it.  This allows
uio operations to be done independent of the cnic device structures.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-14 10:45:55 -07:00
Michael Chan fdf24086f4 cnic: Defer iscsi connection cleanup
The bnx2x devices require a 2 second quiet time before sending the last
RAMROD command to destroy a connection.  This sleep wait adds up to a
long delay when iscsid is serially destroying maultiple connections.

Create a workqueue to perform the final connection cleanup in the
background to speed up the process.  This significantly speeds up the
process as the wait time can be done in parallel for multiple connections.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-14 10:45:54 -07:00
Michael Chan 6e0dda0c46 cnic: Convert ctx_flags to bit fields
so that we can additional bit definitions without requiring a spinlock.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-14 10:45:53 -07:00
Dmitry Kravkov 523224a3b3 bnx2x, cnic, bnx2i: use new FW/HSI
This is the new FW HSI blob and the relevant definitions without logic changes.
It also included code adaptation for new HSI. New features are not enabled.

New FW/HSI includes:
- Support for 57712 HW
- Future support for VF (not used)
- Improvements in FW interrupts scheme
- FW FCoE hooks (stubs for future usage)

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-06 14:10:35 -07:00
Michael Chan 541a78103f cnic: Fine-tune ring init code.
Initialize the rings only during cnic_uio_open() and shut them down
during cnic_uio_close().  Check for the new bit CNIC_LCL_FL_RINGS_INITED
before checking for ring interrupt.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-06 14:09:24 -07:00
Michael Chan 1420398db4 cnic: Use pfid for internal memory offsets.
The pfid (physical function ID) is the same as PCI function on production
devices.  The pfid for future devices will be different and will be used
for internal memory offsets.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-06 14:09:23 -07:00
Michael Chan ceb7e1c7c5 cnic: Pass cp pointer to BNX2X_HW_CID.
Preparation work for upcoming firmware interface changes.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-06 14:09:22 -07:00
Michael Chan e6c2889478 cnic: Unify kcq allocation for all devices.
By creating a common data stucture kcq_info for all devices, the kcq
(kernel completion queue) for all devices can be allocated by common
code.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-25 20:37:19 -07:00
Michael Chan 520efdf44f cnic: Fine-tune CID memory space calculation.
The current code makes assumptions about the CID (context ID) memory
space and starting CID that may not be always correct when firmware
changes.  In particular, BNX2_ISCSI_START_CID may not always be fixed.
We now calculate cp->max_cid_space and cp->iscsi_start_cid dynamically
instead of using fixed constants.  The unused cp->max_iscsi_conn is also
eliminated.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-25 20:37:18 -07:00
Michael Chan 48f753d2ba cnic: Return SPQ credit to bnx2x after ring setup and shutdown.
Everytime the iSCSI ring finishes setup or shutdown, we need to return
the SPQ (slow path queue) credit to the bnx2x driver.  Without this step,
the SPQ will eventually be full causing iSCSI to fail.  This can happen
after 3 or 4 MTU changes for example.

Add code to wait for these slow path commands to complete in the RX ring
and return the SPQ credit to bnx2x.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-18 15:16:44 -07:00
Michael Chan 1f1332a3cb cnic: Convert cnic_local_flags to atomic ops.
It is easier to expand the flags for other purposes because it does
not require a spin_lock.  The next bug fix patch needs a flag in
cnic_local_flags.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-18 15:16:44 -07:00
Michael Chan 1d9cfc4e35 cnic: Update version to 2.1.1.
And update copyright to 2010.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-26 02:10:14 -08:00
Michael Chan a4dde3abbf cnic: Use union for the status blocks of different devices.
We only need to assign the status block address once and it also saves
space in the structure.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: Eddie Wai <waie@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-26 02:10:14 -08:00
Eddie Wai a9736c086c cnic: Finetune iSCSI connection set up.
Initialize IP ID and handle some additional connection errors.

Signed-off-by: Eddie Wai <waie@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-26 02:10:12 -08:00
Michael Chan e251306556 cnic: Add bnx2x data structures.
Add hardware and software structures for bnx2x devices.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Acked-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-11 23:30:16 -07:00
Michael Chan 681dbd7107 cnic: Fix locking in start/stop calls.
The slow path ulp_start and ulp_stop calls to the bnx2i driver
are sleepable calls and therefore should not be protected using
rcu_read_lock.  Fix it by using mutex and setting a bit during
these calls.  cnic_unregister_device() will now wait for the bit
to clear before completing the call.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-15 18:50:44 -07:00
Michael Chan a463696039 [SCSI] cnic: Add new Broadcom CNIC driver.
The CNIC driver controls BNX2 hardware rings and resources used by
iSCSI.  Most hardware resources for iSCSI are separate from those
used for ethernet networking.

iSCSI uses a separate MAC address and IP address.  The CNIC driver
creates a UIO interface to handle the non-offloaded packets such as
ARP, etc in userspace.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-06-09 10:22:42 -05:00