linux-toradex.git/drivers/scsi/fcoe/fcoe.h, branch v3.2.68

[SCSI] fcoe: use real dev in case of HW vlan acceleration

2011-10-02T17:57:12+00:00

Use real dev in case it has HW vlan acceleration
support since in this case the real dev would
do needed vlan processing, this way unnecessary
vlan layer processing avoided and it gives
slightly better IOPS with 512B size IOs.

Signed-off-by: Vasu Dev 
Tested-by: Ross Brattain 
Signed-off-by: Yi Zou 
Signed-off-by: James Bottomley

[SCSI] fcoe: Move common functions to fcoe_transport library

2011-08-27T14:35:46+00:00

Export fcoe_get_wwn, fcoe_validate_vport_create and fcoe_wwn_to_str so that all
LLDs can use these common function.

Signed-off-by: Bhanu Prakash Gollapudi 
Signed-off-by: James Bottomley

[SCSI] fcoe: Prevent creation of an NPIV port with duplicate WWPN

2011-05-24T16:36:29+00:00

This patch adds a validation step before allowing creation of a new NPIV port.
It checks whether the WWPN passed for the new NPIV port to be created is unique
for the given physical port.

Signed-off-by: Neerav Parikh 
Tested-by: Ross Brattain 
Signed-off-by: Robert Love 
Signed-off-by: James Bottomley

[SCSI] libfcoe: Move FCOE_MTU definition from fcoe.h to libfcoe.h

2011-03-01T00:33:12+00:00

both fcoe and bnx2fc drivers can access the common definition of
FCOE_MTU.

Signed-off-by: Bhanu Prakash Gollapudi 
Signed-off-by: Robert Love 
Signed-off-by: James Bottomley

[SCSI] libfcoe: Move common code from fcoe to libfcoe module

2011-02-12T17:18:18+00:00

To facilitate LLDDs to reuse the code, skb queue related functions are moved to
libfcoe, so that both fcoe and bnx2fc drivers can use them. The common structures
fcoe_port, fcoe_percpu_s are moved to libfcoe. fcoe_port will now have an
opaque pointer that points to corresponding driver's interface structure.
Also, fcoe_start_io and fcoe_fc_crc are moved to libfcoe.

As part of this change, fixed fcoe_start_io to return ENOMEM if
skb_clone fails.

Signed-off-by: Bhanu Prakash Gollapudi 
Signed-off-by: Robert Love 
Signed-off-by: James Bottomley

[SCSI] fcoe: Formatting cleanups and commenting

2009-12-04T18:01:08+00:00

Added kernel-doc comment blocks to all structures and functions.

Renamed fc_lport instances rom lp to lport to be inline with our
naming convention.

Renamed all misnamed net_device instances to netdev to be inline
with our naming convention.

Signed-off-by: Robert Love 
Signed-off-by: James Bottomley

[SCSI] libfcoe, fcoe: libfcoe NPIV support

2009-12-04T18:00:58+00:00

The FIP code in libfcoe needed several changes to support NPIV

1) dst_src_addr needs to be managed per-n_port-ID for FPMA fabrics with NPIV
   enabled.  Managing the MAC address is now handled in fcoe, with some slight
   changes to update_mac() and a new get_src_addr() function pointer.

2) The libfc elsct_send() hook is used to setup FCoE specific response
   handlers for FIP encapsulated ELS exchanges.  This lets the FCoE specific
   handling know which VN_Port the exchange is for, and doesn't require
   tracking OX_IDs.  It might be possible to roll back to the full FIP frame
   in these, but for now I've just stashed the contents of the MAC address
   descriptor in the skb context block for later use.  Also, because
   fcoe_elsct_send() just passes control on to fc_elsct_send(), all transmits
   still come through the normal frame_send() path.

3) The NPIV changes added a mutex hold in the keep alive sending, the lport
   mutex is protecting the vport list.  We can't take a mutex from a timer,
   so move the FIP keep alive logic to the link work struct.

Signed-off-by: Chris Leech 
Signed-off-by: Robert Love 
Signed-off-by: James Bottomley

[SCSI] fcoe: Increase FCOE_MAX_LUN to 0xFFFF (65535)

2009-12-04T18:00:53+00:00

The maximum number of LUNs was far too low. This value is
what most other FC HBAs are using.

Signed-off-by: Robert Love 
Signed-off-by: James Bottomley

[SCSI] fcoe: Use NETIF_F_FCOE_MTU flag to set up max frame size (lport->mfs)

2009-12-04T18:00:32+00:00

Add a define of FCOE_MTU as 2158 bytes and use FCOE_MTU when the LLD is found
to support NETIF_F_FCOE_MTU. The lport->mfs is then calculated out of the
2158 FCOE_MTU. Otherwise, we stick with the netdev->mtu, i.e., LAN MTU. Also,
change the notification on NETDEV_CHANGEMTU event to bypass changing mfs when
LAN MTU is changed if NETIF_F_FCOE_MTU is supported.

Signed-off-by: Yi Zou 
Signed-off-by: Robert Love 
Signed-off-by: James Bottomley

[SCSI] fcoe: Fix module ref count bug by adding NETDEV UNREGISTER handling

2009-09-10T17:07:38+00:00

Fixes reference counting on fcoe_instance and net_device, and adds
NETDEV_UNREGISTER notifier handling so that you can unload network drivers.
FCoE no longer increments the module use count for the network driver.

On an NETDEV_UNREGISTER event, destroying the FCoE instance is deferred to a
workqueue context to avoid RTNL deadlocks.

Based in part by an earlier patch from John Fastabend

John's patch description:
Currently, the netdev module ref count is not decremented with module_put()
when the module is unloaded while fcoe instances are present. To fix this
removed reference count on netdev module completely and added functionality to
netdev event handling for NETDEV_UNREGISTER events.

This allows fcoe to remove devices cleanly when the netdev module is unloaded
so we no longer need to hold a reference count for the netdev module.

Signed-off-by: Chris Leech 
Signed-off-by: Robert Love 
Signed-off-by: James Bottomley