- 28 Jul, 2010 40 commits
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Kashyap, Desai authored
Issue description: In multipath topology, when device deletion is in transient state, multipath driver can call blk_flush_queue() as part of path failure. Before device get deleted from OS, Device may go OFFLINE as part of error handling kicked off triggered from multipathing driver. Above condition hits more frequently if device missing delay timer (which is LSI specific firmware parameter) is non zero value. root cause of this issue is Error handling thread is getting kicked off for device which is not really present(in transient state of deleting). This patch has solution for this issue. driver is now using eh_timed_out callback. See below. mptsas_transport_template->eh_timed_out = mptsas_eh_timed_out Using mptsas_eh_timed_out function, driver can decide weather vdevice is under Device missing delay or deleting state. for either of those cases, there is BLK_EH_RESET_TIMER return to scsi mid and error handling thread will not be kicked off for that particular scsi command. Signed-off-by:
Kashyap Desai <kashyap.desai@lsi.com> Cc: Stable Tree <stable@kernel.org> Signed-off-by:
James Bottomley <James.Bottomley@suse.de>
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Peter Huewe authored
Add the __init and __exit macros to the module_init / module_exit functions from drivers/scsi/ibmvscsi/ibmvstgt.c Signed-off-by:
Peter Huewe <peterhuewe@gmx.de> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Acked-by:
Brian King <brking@linux.vnet.ibm.com> Signed-off-by:
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Rolf Eike Beer authored
Signed-off-by:
Rolf Eike Beer <eike-kernel@sf-tec.de> Acked-by:
Achim Leubner <Achim_Leubner@pmc-sierra.com> Signed-off-by:
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Arun Easi authored
Signed-off-by:
Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by:
Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by:
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Andrew Vasquez authored
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Giridhar Malavali authored
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Giridhar Malavali authored
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Giridhar Malavali authored
Re-organized and cleaned up the ISP82xx specific code. Signed-off-by:
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Harish Zunjarrao authored
Signed-off-by:
Harish Zunjarrao <harish.zunjarrao@qlogic.com> Signed-off-by:
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Harish Zunjarrao authored
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Madhuranath Iyengar authored
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Chad Dupuis authored
This function was added to encapsulate freeing the memory for all the fcports associated with a particular vha. Also added a call to qla2x00_free_fcports() to qla2x00_free_device() to free the memory for all the fcports associated with a vha during device removal. Signed-off-by:
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Andrew Vasquez authored
If BIOS is enabled then drivers init firmware fails since BIOS has done the init once. Signed-off-by:
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Duane Grigsby authored
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Andrew Vasquez authored
Earlier implementation did not take into account the varying sizes of data buffers returned from structures sts_entry_t and sts_entry_24xx. Sense-data after the 20th byte could be incorrect. Signed-off-by:
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Madhuranath Iyengar authored
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Chad Dupuis authored
The default method that qla2xxx uses is the GID_PT nameserver command to get a list of Nx_Ports. This patch adds a GFF_ID call for each port returned by GID_PT to get the FC4 type. If the FC4 type is not FCP SCSI then the qla2xxx driver will not record that port in it's port database. For switches that do not support the GFF_ID command, the behavior will be for qla2xxx to store that port anyways. Signed-off-by:
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Madhuranath Iyengar authored
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Giridhar Malavali authored
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Madhuranath Iyengar authored
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Mike Christie authored
wait for session to come online in eh_device_reset_handler and eh_target_reset_handler Signed-off-by:
Mike Christie <michaelc@cs.wisc.edu> Signed-off-by:
Vikas Chaudhary <vikas.chaudhary@qlogic.com> Signed-off-by:
Ravi Anand <ravi.anand@qlogic.com> Signed-off-by:
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Vikas Chaudhary authored
Added support to modify session->recovery_tmo from sysfs Signed-off-by:
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FUJITA Tomonori authored
After blk_rq_map_user is successful, if we find that a device is unavailable (was detached), we must call blk_end_request_all to free bio(s) before blk_rq_unmap_user and blk_put_request. Reported-by:
"Dailey, Nate" <Nate.Dailey@stratus.com> Signed-off-by:
FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Tested-by:
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Vasu Dev authored
This check prevents FCF selection in NPV mode due to zero fabric name in that case and in turn flogi fails. Though NPV mode should not have this zero and should be fixed there also but spec also does not require initiator to ensure that fabric name must be non-zero, therefore dropping this check to get flogi working in NPV mode. Signed-off-by:
Vasu Dev <vasu.dev@intel.com> Signed-off-by:
Robert Love <robert.w.love@intel.com> Signed-off-by:
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Bhanu Prakash Gollapudi authored
Call fc_lport_error to retry upto max retry count when FLOGI/SCR/NS gets rejected. Signed-off-by:
Bhanu Prakash Gollapudi <bprakash@broadcom.com> Signed-off-by:
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Vasu Dev authored
This reverts commit cc0136c2. That commit introduced vlan id info to WWPN but WWPN needs to remain static as an unique port identifier in the fabric, therefore variable fabric vlan id info doesn't need to be coded inside WWPN. After this revert, port arg to fcoe_wwn_from_mac is always zero but still leaving it as-is okay to later allow users to use NAA 2 scheme with this additional port arg. Note with this patch, existing zoning using WWPN would require re-zoning this time only and later no more re-zoning due to any vlan id changes. Signed-off-by:
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Yi Zou authored
Currently, when FCoE netdev feature flags are toggled by the LLD, lport's corresponding flags are not updated. This causes the fc_fcp to still try to offload the I/O. This patch adds support of NETDEV_FEAT_CHANGE event in fcoe netdev device notification callback so we can update the lport offload flags appropriately. Signed-off-by:
Yi Zou <yi.zou@intel.com> Signed-off-by:
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Joe Eykholt authored
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 <jeykholt@cisco.com> Signed-off-by:
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Joe Eykholt authored
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:
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Joe Eykholt authored
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:
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Joe Eykholt authored
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 <scsi/fc_frame.h> since we need them there and that's included by <scsi/libfc.h> Signed-off-by:
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Joe Eykholt authored
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:
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Joe Eykholt authored
Add module parameter create_vn2vn that behaves like the create parameter except that the new instance is created in FIP vn2vn mode. This can be replaced once we change create to allow modifying per-instance attributes before starting the instance. Signed-off-by:
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Joe Eykholt authored
In VN2VN mode, map_dest means to use the default VN2VN OUI. Change code that uses the default FCoE OUI to use the one set in the fcoe_ctlr struct. Signed-off-by:
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Joe Eykholt authored
When sending a FLOGI LS_ACC, which we only do in point-to-multipoint mode, the MAC descriptor should have the granted MAC set to 0x0efd00 || D_ID. When sending an LS_RJT, there should be no MAC descriptor. When sending either an LS_ACC or LS_RJT, the subcode should indicate an reply, not a request. Signed-off-by:
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Joe Eykholt authored
The FC-BB-6 committee is proposing a new FIP usage model called VN_port to VN_port mode. It allows VN_ports to discover each other over a loss-free L2 Ethernet without any FCF or Fibre-channel fabric services. This is point-to-multipoint. There is also a variant of this called point-to-point which provides for making sure there is just one pair of ports operating over the Ethernet fabric. We add these new states: VNMP_START, _PROBE1, _PROBE2, _CLAIM, and _UP. These usually go quickly in that sequence. After waiting a random amount of time up to 100 ms in START, we select a pseudo-random proposed locally-unique port ID and send out probes in states PROBE1 and PROBE2, 100 ms apart. If no probe responses are heard, we proceed to CLAIM state 400 ms later and send a claim notification. We wait another 400 ms to receive claim responses, which give us a list of the other nodes on the network, including their FC-4 capabilities. After another 400 ms we go to VNMP_UP state and should start interoperating with any of the nodes for whic we receivec claim responses. More details are in the spec.j Add the new mode as FIP_MODE_VN2VN. The driver must specify explicitly that it wants to operate in this mode. There is no automatic detection between point-to-multipoint and fabric mode, and the local port initialization is affected, so it isn't anticipated that there will ever be any such automatic switchover. It may eventually be possible to have both fabric and VN2VN modes on the same L2 network, which may be done by two separate local VN_ports (lports). When in VN2VN mode, FIP replaces libfc's fabric-oriented discovery module with its own simple code that adds remote ports as they are discovered from incoming claim notifications and responses. These hooks are placed by fcoe_disc_init(). A linear list of discovered vn_ports is maintained under the fcoe_ctlr struct. It is expected to be short for now, and accessed infrequently. It is kept under RCU for lock-ordering reasons. The lport and/or rport mutexes may be held when we need to lookup a fcoe_vnport during an ELS send. Change fcoe_ctlr_encaps() to lookup the destination vn_port in the list of peers for the destination MAC address of the FIP-encapsulated frame. Add a new function fcoe_disc_init() to initialize just the discovery portion of libfcoe for VN2VN mode. Signed-off-by:
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Joe Eykholt authored
Enhancement: add debug messages at all state transitions. Signed-off-by:
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Joe Eykholt authored
The FC-BB-6 committee is proposing a new FIP usage model called VN_port to VN_port mode. It allows VN_ports to discover each other over a loss-free L2 Ethernet without any FCF or Fibre-channel fabric services. This is point-to-multipoint. There is also a variant of this called point-to-point which provides for making sure there is just one pair of ports operating over the Ethernet fabric. This patch defines the new message type and subtypes as well as one new descriptor type used by VN2VN mode. These are all still at the proposed stage and subject to change. Signed-off-by:
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Joe Eykholt authored
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:
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Joe Eykholt authored
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:
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