linux-stable.git/drivers/scsi/libfc, branch linux-2.6.36.y

[SCSI] libfc: call fc_remote_port_chkready under the host lock.

2010-08-06T16:00:26+00:00

The rport port state and flags are set under the host lock,
so this patch calls fc_remote_port_chkready with the host lock
held like is also done in the other fc drivers.

Signed-off-by: Mike Christie 
Signed-off-by: James Bottomley

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2010-08-04T22:31:02+00:00

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (48 commits)
  Documentation: update broken web addresses.
  fix comment typo "choosed" -> "chosen"
  hostap:hostap_hw.c Fix typo in comment
  Fix spelling contorller -> controller in comments
  Kconfig.debug: FAIL_IO_TIMEOUT: typo Faul -> Fault
  fs/Kconfig: Fix typo Userpace -> Userspace
  Removing dead MACH_U300_BS26
  drivers/infiniband: Remove unnecessary casts of private_data
  fs/ocfs2: Remove unnecessary casts of private_data
  libfc: use ARRAY_SIZE
  scsi: bfa: use ARRAY_SIZE
  drm: i915: use ARRAY_SIZE
  drm: drm_edid: use ARRAY_SIZE
  synclink: use ARRAY_SIZE
  block: cciss: use ARRAY_SIZE
  comment typo fixes: charater => character
  fix comment typos concerning "challenge"
  arm: plat-spear: fix typo in kerneldoc
  reiserfs: typo comment fix
  update email address
  ...

[SCSI] libfc: Add retry logic to lport state machine when receiving LS_RJT

2010-07-28T14:06:04+00:00

Call fc_lport_error to retry upto max retry count when
FLOGI/SCR/NS gets rejected.

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

[SCSI] libfc: don't require a local exchange for incoming requests

2010-07-28T14:06:02+00:00

Incoming requests shouldn't require a local exchange if we're
just going to reply with one or two frames and don't expect
anything further.  Don't allocate exchanges for such requests
until requested by the upper-layer protocol.

The sequence is always NULL for new requests, so remove
that as an argument to request handlers.

Also change the first argument to lport->tt.seq_els_rsp_send
from the sequence pointer to the received frame pointer, to
supply the exchange IDs and destination ID info.

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

[SCSI] libfc: add interface to allocate a sequence for incoming requests

2010-07-28T14:06:01+00:00

For incoming ELS and FCP requests, we often don't require an
exchange and sequence, however, sometimes we do.  For those cases,
(primarily FCP requests for targets) add a function to set up
the exchange and sequence.

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

[SCSI] libfc: add fc_fill_reply_hdr() and fc_fill_hdr()

2010-07-28T14:06:00+00:00

Add functions to fill in an FC header given a request header.
These reduces code lines in fc_lport and fc_rport and works
without an exchange/sequence assigned.

fc_fill_reply_hdr() fills a header for a final reply frame.

fc_fill_hdr() which is similar but allows specifying the
f_ctl parameter.

Add defines for F_CTL values FC_FCTL_REQ and FC_FCTL_RESP.
These can be used for most request and response sequences.

v2 of patch adds a line to copy the frame encapsulation
info from the received frame.

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

[SCSI] libfc: add fc_frame_sid() and fc_frame_did() functions

2010-07-28T14:05:59+00:00

To pave the way for eliminating exchanges from incoming requests,
add simple inline fc_frame_sid() and fc_frame_did() functions
which get the FC_IDs from the frame header.  This can be almost
as efficient as getting them from the sequence/exchange.

Move ntohll, htonll, ntoh24 and hton24 to 
since we need them there and that's included by 

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

[SCSI] libfc: eliminate rport LOGO state

2010-07-28T14:05:58+00:00

The LOGO state hasn't been used in a while, except in a brief
transition to DELETE state while holding the rport mutex.
All port LOGO responses have been ignored as well as any timeout
if we don't get a response.

So this patch just removes LOGO state and simplifies the response handler.

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

[SCSI] libfc: track FIP exchanges

2010-07-28T14:05:54+00:00

When an exchange is received with a FIP encapsulation, we need
to know that the response must be sent via FIP and what the original
ELS opcode was.  This becomes important for VN2VN mode, where we may
receive FLOGI or LOGO from several peer VN_ports, and the LS_ACC or
LS_RJT must be sent FIP-encapsulated with the correct sub-type.

Add a field to the struct fc_frame, fr_encaps, to indicate the
encapsulation values.  That term is chosen to be neutral and
LLD-agnostic in case non-FCoE/FIP LLDs might find it useful.

The frame fr_encaps is transferred from the ingress frame to the
exchange by fc_exch_recv_req(), and back to the outgoing frame
by fc_seq_send().

This is taking the last byte in the skb->cb array.  If needed,
we could combine the info in sof, eof, flags, and encaps
together into one field, but it'd be better to do that if
and when its needed.

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

[SCSI] libfc: add FLOGI state to rport for VN2VN

2010-07-28T14:05:53+00:00

The FIP proposal for VN_port to VN_port point-to-multipoint
operation requires a FLOGI be sent to each remote port.
The FLOGI is sent with the assigned S_ID and D_IDs of the
local and remote ports.  This and the response get
FIP-encapsulated for Ethernet.

Add FLOGI state to the remote port state machine.
This will be skipped if not in point-to-multipoint mode.

To reduce a little duplication between PLOGI and FLOGI
response handling, added fc_rport_login_complete(), which
handles the parameters for the rdata struct.

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