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linux/include/scsi/libfcoe.h

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[SCSI] fcoe: Fibre Channel over Ethernet Encapsulation protocol for running Fibre Channel over Ethernet interfaces. Creates virtual Fibre Channel host adapters using libfc. This layer is the LLD to the scsi-ml. It allocates the Scsi_Host, utilizes libfc for Fibre Channel protocol processing and interacts with netdev to send/receive Ethernet packets. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-09 15:10:24 -08:00
[SCSI] fcoe, libfcoe: Add support for FIP. FCoE discovery and keep-alive. FIP is the new standard way to discover Fibre-Channel Forwarders (FCFs) by sending solicitations and listening for advertisements from FCFs. It also provides for keep-alives and period advertisements so that both parties know they have connectivity. If the FCF loses connectivity to the storage fabric, it can send a Link Reset to inform the E_node. This version is also compatible with pre-FIP implementations, so no configured selection between FIP mode and non-FIP mode is required. We wait a couple seconds after sending the initial solicitation and then send an old-style FLOGI. If we receive any FIP frames, we use FIP only mode. If the old FLOGI receives a response, we disable FIP mode. After every reset or link up, this determination is repeated. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-17 11:42:40 -07:00
[SCSI] fcoe: Fibre Channel over Ethernet Encapsulation protocol for running Fibre Channel over Ethernet interfaces. Creates virtual Fibre Channel host adapters using libfc. This layer is the LLD to the scsi-ml. It allocates the Scsi_Host, utilizes libfc for Fibre Channel protocol processing and interacts with netdev to send/receive Ethernet packets. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-09 15:10:24 -08:00
[SCSI] fcoe, libfcoe: Add support for FIP. FCoE discovery and keep-alive. FIP is the new standard way to discover Fibre-Channel Forwarders (FCFs) by sending solicitations and listening for advertisements from FCFs. It also provides for keep-alives and period advertisements so that both parties know they have connectivity. If the FCF loses connectivity to the storage fabric, it can send a Link Reset to inform the E_node. This version is also compatible with pre-FIP implementations, so no configured selection between FIP mode and non-FIP mode is required. We wait a couple seconds after sending the initial solicitation and then send an old-style FLOGI. If we receive any FIP frames, we use FIP only mode. If the old FLOGI receives a response, we disable FIP mode. After every reset or link up, this determination is repeated. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-17 11:42:40 -07:00
[SCSI] fcoe: Fibre Channel over Ethernet Encapsulation protocol for running Fibre Channel over Ethernet interfaces. Creates virtual Fibre Channel host adapters using libfc. This layer is the LLD to the scsi-ml. It allocates the Scsi_Host, utilizes libfc for Fibre Channel protocol processing and interacts with netdev to send/receive Ethernet packets. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-09 15:10:24 -08:00
[SCSI] fcoe, libfcoe: Add support for FIP. FCoE discovery and keep-alive. FIP is the new standard way to discover Fibre-Channel Forwarders (FCFs) by sending solicitations and listening for advertisements from FCFs. It also provides for keep-alives and period advertisements so that both parties know they have connectivity. If the FCF loses connectivity to the storage fabric, it can send a Link Reset to inform the E_node. This version is also compatible with pre-FIP implementations, so no configured selection between FIP mode and non-FIP mode is required. We wait a couple seconds after sending the initial solicitation and then send an old-style FLOGI. If we receive any FIP frames, we use FIP only mode. If the old FLOGI receives a response, we disable FIP mode. After every reset or link up, this determination is repeated. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-17 11:42:40 -07:00
[SCSI] fcoe: Fibre Channel over Ethernet Encapsulation protocol for running Fibre Channel over Ethernet interfaces. Creates virtual Fibre Channel host adapters using libfc. This layer is the LLD to the scsi-ml. It allocates the Scsi_Host, utilizes libfc for Fibre Channel protocol processing and interacts with netdev to send/receive Ethernet packets. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-09 15:10:24 -08:00
[SCSI] fcoe, libfcoe: Add support for FIP. FCoE discovery and keep-alive. FIP is the new standard way to discover Fibre-Channel Forwarders (FCFs) by sending solicitations and listening for advertisements from FCFs. It also provides for keep-alives and period advertisements so that both parties know they have connectivity. If the FCF loses connectivity to the storage fabric, it can send a Link Reset to inform the E_node. This version is also compatible with pre-FIP implementations, so no configured selection between FIP mode and non-FIP mode is required. We wait a couple seconds after sending the initial solicitation and then send an old-style FLOGI. If we receive any FIP frames, we use FIP only mode. If the old FLOGI receives a response, we disable FIP mode. After every reset or link up, this determination is repeated. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-17 11:42:40 -07:00
[SCSI] libfcoe: formatting and comment cleanups Ensures that there are kernel-doc style comments for all routines and structures. There were also a few instances of fc_lport's named 'lp' which were switched to 'lport' as per the libfc/libfcoe/fcoe naming convention. Also, emacs 'indent-region' and 'tabify' were ran on libfcoe.c. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-11-03 11:47:45 -08:00
[SCSI] libfcoe: Allow FIP to be disabled by the driver Allow FIP to be disabled by the driver for devices that want to use libfcoe in non-FIP mode. The driver merely sets the fcoe_ctlr mode to the state which should be entered when the link comes up. The default is auto. No change is needed for fcoe.c which uses auto mode. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-11-03 11:48:11 -08:00
[SCSI] libfcoe: formatting and comment cleanups Ensures that there are kernel-doc style comments for all routines and structures. There were also a few instances of fc_lport's named 'lp' which were switched to 'lport' as per the libfc/libfcoe/fcoe naming convention. Also, emacs 'indent-region' and 'tabify' were ran on libfcoe.c. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-11-03 11:47:45 -08:00
[SCSI] libfcoe: eliminate unused link and last_link fields The link and last_link fields in the fcoe_ctlr struct are no longer useful, since they are always set to the same value, and FIP always calls libfc to pass link information to the lport. Eliminate those fields and rename link_work to timer_work, since it no longer has any link change work to do. Thanks to Brian Uchino for discovering this issue. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-12 16:08:23 -08:00
[SCSI] libfcoe: formatting and comment cleanups Ensures that there are kernel-doc style comments for all routines and structures. There were also a few instances of fc_lport's named 'lp' which were switched to 'lport' as per the libfc/libfcoe/fcoe naming convention. Also, emacs 'indent-region' and 'tabify' were ran on libfcoe.c. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-11-03 11:47:45 -08:00
[SCSI] fcoe, libfcoe: Add support for FIP. FCoE discovery and keep-alive. FIP is the new standard way to discover Fibre-Channel Forwarders (FCFs) by sending solicitations and listening for advertisements from FCFs. It also provides for keep-alives and period advertisements so that both parties know they have connectivity. If the FCF loses connectivity to the storage fabric, it can send a Link Reset to inform the E_node. This version is also compatible with pre-FIP implementations, so no configured selection between FIP mode and non-FIP mode is required. We wait a couple seconds after sending the initial solicitation and then send an old-style FLOGI. If we receive any FIP frames, we use FIP only mode. If the old FLOGI receives a response, we disable FIP mode. After every reset or link up, this determination is repeated. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-17 11:42:40 -07:00
[SCSI] libfcoe: formatting and comment cleanups Ensures that there are kernel-doc style comments for all routines and structures. There were also a few instances of fc_lport's named 'lp' which were switched to 'lport' as per the libfc/libfcoe/fcoe naming convention. Also, emacs 'indent-region' and 'tabify' were ran on libfcoe.c. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-11-03 11:47:45 -08:00
[SCSI] fcoe, libfcoe: Add support for FIP. FCoE discovery and keep-alive. FIP is the new standard way to discover Fibre-Channel Forwarders (FCFs) by sending solicitations and listening for advertisements from FCFs. It also provides for keep-alives and period advertisements so that both parties know they have connectivity. If the FCF loses connectivity to the storage fabric, it can send a Link Reset to inform the E_node. This version is also compatible with pre-FIP implementations, so no configured selection between FIP mode and non-FIP mode is required. We wait a couple seconds after sending the initial solicitation and then send an old-style FLOGI. If we receive any FIP frames, we use FIP only mode. If the old FLOGI receives a response, we disable FIP mode. After every reset or link up, this determination is repeated. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-17 11:42:40 -07:00
[SCSI] libfcoe: Allow FIP to be disabled by the driver Allow FIP to be disabled by the driver for devices that want to use libfcoe in non-FIP mode. The driver merely sets the fcoe_ctlr mode to the state which should be entered when the link comes up. The default is auto. No change is needed for fcoe.c which uses auto mode. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-11-03 11:48:11 -08:00
[SCSI] fcoe, libfcoe: Add support for FIP. FCoE discovery and keep-alive. FIP is the new standard way to discover Fibre-Channel Forwarders (FCFs) by sending solicitations and listening for advertisements from FCFs. It also provides for keep-alives and period advertisements so that both parties know they have connectivity. If the FCF loses connectivity to the storage fabric, it can send a Link Reset to inform the E_node. This version is also compatible with pre-FIP implementations, so no configured selection between FIP mode and non-FIP mode is required. We wait a couple seconds after sending the initial solicitation and then send an old-style FLOGI. If we receive any FIP frames, we use FIP only mode. If the old FLOGI receives a response, we disable FIP mode. After every reset or link up, this determination is repeated. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-17 11:42:40 -07:00
[SCSI] libfcoe: eliminate unused link and last_link fields The link and last_link fields in the fcoe_ctlr struct are no longer useful, since they are always set to the same value, and FIP always calls libfc to pass link information to the lport. Eliminate those fields and rename link_work to timer_work, since it no longer has any link change work to do. Thanks to Brian Uchino for discovering this issue. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-12 16:08:23 -08:00
[SCSI] fcoe, libfcoe: Add support for FIP. FCoE discovery and keep-alive. FIP is the new standard way to discover Fibre-Channel Forwarders (FCFs) by sending solicitations and listening for advertisements from FCFs. It also provides for keep-alives and period advertisements so that both parties know they have connectivity. If the FCF loses connectivity to the storage fabric, it can send a Link Reset to inform the E_node. This version is also compatible with pre-FIP implementations, so no configured selection between FIP mode and non-FIP mode is required. We wait a couple seconds after sending the initial solicitation and then send an old-style FLOGI. If we receive any FIP frames, we use FIP only mode. If the old FLOGI receives a response, we disable FIP mode. After every reset or link up, this determination is repeated. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-17 11:42:40 -07:00
[SCSI] libfcoe: FIP should report link to libfc whether selected or not The fnic driver with FIP is reporting link up, even though it's down. When the interface is shut down by the switch, we receive a clear virtual link, and set the state reported to libfc as down, although we still report it up. Clearly wrong. That causes the subsequent link down event not to be reported, and /sys shows the host "Online". Currently, in FIP mode, if an FCF times out, then link to libfc is reported as down, to stop FLOGIs. That interferes with the LLD link down being reported. Users really need to know the physical link information, to diagnose cabling issues, so physical link status should be reported to libfc. If the selected FCF needs to be reported, that should be done separately, in a later patch. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-11-03 11:48:27 -08:00
[SCSI] fcoe, libfcoe: Add support for FIP. FCoE discovery and keep-alive. FIP is the new standard way to discover Fibre-Channel Forwarders (FCFs) by sending solicitations and listening for advertisements from FCFs. It also provides for keep-alives and period advertisements so that both parties know they have connectivity. If the FCF loses connectivity to the storage fabric, it can send a Link Reset to inform the E_node. This version is also compatible with pre-FIP implementations, so no configured selection between FIP mode and non-FIP mode is required. We wait a couple seconds after sending the initial solicitation and then send an old-style FLOGI. If we receive any FIP frames, we use FIP only mode. If the old FLOGI receives a response, we disable FIP mode. After every reset or link up, this determination is repeated. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-17 11:42:40 -07:00
fcoe: adds spma mode support If we can find a type NETDEV_HW_ADDR_T_SAN mac address from the corresponding netdev for a fcoe interface then sets up added the fc->ctlr.spma flag and stores spma mode address in ctl_src_addr. In case the spma flag is set then:- 1. Adds spma mode MAC address in ctl_src_addr as secondary MAC address, the FLOGI for FIP and pre-FIP will go out using this address. 2. Cleans up stored spma MAC address in ctl_src_addr in fcoe_netdev_cleanup. 3. Sets up spma bit in fip_flags for FIP solicitations along with exiting FPMA bit setting. 4. Initialize the FLOGI FIP MAC descriptor to stored spma MAC address in ctl_src_addr. This is used as proposed FCoE MAC address from initiator along with both SPMA and FPMA bit set in FIP solicitation, in response the switch may grant any FPMA or SPMA mode MAC address to initiator. Removes FIP descriptor type checking against ELS type ELS_FLOGI in fcoe_ctlr_encaps to update a FIP MAC descriptor, instead now checks against FIP_DT_FLOGI. I've tested this with available FPMA-only FCoE switch but since data_src_addr is updated using same old code for both FPMA and SPMA modes with FIP or pre-FIP links, so added SPMA mode will work with SPMA-only switch also provided that switch grants a valid MAC address. Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17 12:33:28 +00:00
[SCSI] libfcoe, fcoe: libfcoe NPIV support 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 <christopher.leech@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-11-03 11:46:29 -08:00
[SCSI] fcoe, libfcoe: Add support for FIP. FCoE discovery and keep-alive. FIP is the new standard way to discover Fibre-Channel Forwarders (FCFs) by sending solicitations and listening for advertisements from FCFs. It also provides for keep-alives and period advertisements so that both parties know they have connectivity. If the FCF loses connectivity to the storage fabric, it can send a Link Reset to inform the E_node. This version is also compatible with pre-FIP implementations, so no configured selection between FIP mode and non-FIP mode is required. We wait a couple seconds after sending the initial solicitation and then send an old-style FLOGI. If we receive any FIP frames, we use FIP only mode. If the old FLOGI receives a response, we disable FIP mode. After every reset or link up, this determination is repeated. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-17 11:42:40 -07:00
[SCSI] libfcoe, fcoe: libfcoe NPIV support 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 <christopher.leech@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-11-03 11:46:29 -08:00
[SCSI] fcoe, libfcoe: Add support for FIP. FCoE discovery and keep-alive. FIP is the new standard way to discover Fibre-Channel Forwarders (FCFs) by sending solicitations and listening for advertisements from FCFs. It also provides for keep-alives and period advertisements so that both parties know they have connectivity. If the FCF loses connectivity to the storage fabric, it can send a Link Reset to inform the E_node. This version is also compatible with pre-FIP implementations, so no configured selection between FIP mode and non-FIP mode is required. We wait a couple seconds after sending the initial solicitation and then send an old-style FLOGI. If we receive any FIP frames, we use FIP only mode. If the old FLOGI receives a response, we disable FIP mode. After every reset or link up, this determination is repeated. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-17 11:42:40 -07:00
[SCSI] libfcoe: formatting and comment cleanups Ensures that there are kernel-doc style comments for all routines and structures. There were also a few instances of fc_lport's named 'lp' which were switched to 'lport' as per the libfc/libfcoe/fcoe naming convention. Also, emacs 'indent-region' and 'tabify' were ran on libfcoe.c. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-11-03 11:47:45 -08:00
[SCSI] fcoe, libfcoe: Add support for FIP. FCoE discovery and keep-alive. FIP is the new standard way to discover Fibre-Channel Forwarders (FCFs) by sending solicitations and listening for advertisements from FCFs. It also provides for keep-alives and period advertisements so that both parties know they have connectivity. If the FCF loses connectivity to the storage fabric, it can send a Link Reset to inform the E_node. This version is also compatible with pre-FIP implementations, so no configured selection between FIP mode and non-FIP mode is required. We wait a couple seconds after sending the initial solicitation and then send an old-style FLOGI. If we receive any FIP frames, we use FIP only mode. If the old FLOGI receives a response, we disable FIP mode. After every reset or link up, this determination is repeated. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-17 11:42:40 -07:00
[SCSI] libfcoe: add checking disable flag in FIP_FKA_ADV When the D bit is set if the FKA_ADV_Period of the FIP Discovery Advertisement, the ENode should not transmit period ENode FIP Keep Alive and VN_Port FIP Keep Alive (FC-BB-5 Rev2, 7.8.3.13). Note that fcf->flags is taken directly from the fip_header, I am claiming one bit for the purpose of the FIP_FKA_Period D bit as FIP_FL_FK_ADV_B, and use FIP_HEADER_FLAGS as bitmask for bits used in fip_header. Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-11-20 14:54:57 -08:00
[SCSI] fcoe, libfcoe: Add support for FIP. FCoE discovery and keep-alive. FIP is the new standard way to discover Fibre-Channel Forwarders (FCFs) by sending solicitations and listening for advertisements from FCFs. It also provides for keep-alives and period advertisements so that both parties know they have connectivity. If the FCF loses connectivity to the storage fabric, it can send a Link Reset to inform the E_node. This version is also compatible with pre-FIP implementations, so no configured selection between FIP mode and non-FIP mode is required. We wait a couple seconds after sending the initial solicitation and then send an old-style FLOGI. If we receive any FIP frames, we use FIP only mode. If the old FLOGI receives a response, we disable FIP mode. After every reset or link up, this determination is repeated. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-17 11:42:40 -07:00
[SCSI] libfcoe, fcoe: libfcoe NPIV support 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 <christopher.leech@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-11-03 11:46:29 -08:00
[SCSI] fcoe, libfcoe: Add support for FIP. FCoE discovery and keep-alive. FIP is the new standard way to discover Fibre-Channel Forwarders (FCFs) by sending solicitations and listening for advertisements from FCFs. It also provides for keep-alives and period advertisements so that both parties know they have connectivity. If the FCF loses connectivity to the storage fabric, it can send a Link Reset to inform the E_node. This version is also compatible with pre-FIP implementations, so no configured selection between FIP mode and non-FIP mode is required. We wait a couple seconds after sending the initial solicitation and then send an old-style FLOGI. If we receive any FIP frames, we use FIP only mode. If the old FLOGI receives a response, we disable FIP mode. After every reset or link up, this determination is repeated. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-17 11:42:40 -07:00
[SCSI] libfcoe: formatting and comment cleanups Ensures that there are kernel-doc style comments for all routines and structures. There were also a few instances of fc_lport's named 'lp' which were switched to 'lport' as per the libfc/libfcoe/fcoe naming convention. Also, emacs 'indent-region' and 'tabify' were ran on libfcoe.c. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-11-03 11:47:45 -08:00
[SCSI] libfcoe: fcoe: simplify receive FLOGI response There was a locking problem where the fip->lock was held during the call to update_mac(). The rtnl_lock() must be taken before the fip->lock, not the other way around. This fixes that. Now that fcoe_ctlr_recv_flog() is called only from the response handler to a FLOGI request, some checking can be eliminated. Instead of calling update_mac(), just fill in the granted_mac address for the passed-in frame (skb). Eliminate the passed-in source MAC address since it is also in the skb. Also, in fcoe, call fcoe_set_src_mac() directly instead of going thru the fip function pointer. This will generate less code. Then, since fip isn't needed for LOGO response, use lport as the arg. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-11-03 11:49:16 -08:00
[SCSI] fcoe, libfcoe: Add support for FIP. FCoE discovery and keep-alive. FIP is the new standard way to discover Fibre-Channel Forwarders (FCFs) by sending solicitations and listening for advertisements from FCFs. It also provides for keep-alives and period advertisements so that both parties know they have connectivity. If the FCF loses connectivity to the storage fabric, it can send a Link Reset to inform the E_node. This version is also compatible with pre-FIP implementations, so no configured selection between FIP mode and non-FIP mode is required. We wait a couple seconds after sending the initial solicitation and then send an old-style FLOGI. If we receive any FIP frames, we use FIP only mode. If the old FLOGI receives a response, we disable FIP mode. After every reset or link up, this determination is repeated. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-17 11:42:40 -07:00
[SCSI] fcoe: Fibre Channel over Ethernet Encapsulation protocol for running Fibre Channel over Ethernet interfaces. Creates virtual Fibre Channel host adapters using libfc. This layer is the LLD to the scsi-ml. It allocates the Scsi_Host, utilizes libfc for Fibre Channel protocol processing and interacts with netdev to send/receive Ethernet packets. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-09 15:10:24 -08:00
[SCSI] fcoe: cleans up libfcoe.h and adds fcoe.h for fcoe module Removes no where used several inline functions prefixed with skb_* and be16_to_cpu. Moves fcoe module specific func prototypes to fcoe.c from libfcoe.h, moved only need for build. Adds fcoe module header file fcoe.h and then moves fcoe module specific fcoe_percpu_s and fcoe_softc to fcoe.h from libfcoe.h. Moves all defines from fcoe.c to fcoe.h since now fcoe module has its own header file fcoe.h. [jejb: removed EXPORT_SYMBOL_GPL(fcoe_fc_crc) which caused a section mismatch] Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-17 11:42:24 -07:00
[SCSI] fcoe: Fibre Channel over Ethernet Encapsulation protocol for running Fibre Channel over Ethernet interfaces. Creates virtual Fibre Channel host adapters using libfc. This layer is the LLD to the scsi-ml. It allocates the Scsi_Host, utilizes libfc for Fibre Channel protocol processing and interacts with netdev to send/receive Ethernet packets. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-09 15:10:24 -08:00
[SCSI] fcoe: cleans up libfcoe.h and adds fcoe.h for fcoe module Removes no where used several inline functions prefixed with skb_* and be16_to_cpu. Moves fcoe module specific func prototypes to fcoe.c from libfcoe.h, moved only need for build. Adds fcoe module header file fcoe.h and then moves fcoe module specific fcoe_percpu_s and fcoe_softc to fcoe.h from libfcoe.h. Moves all defines from fcoe.c to fcoe.h since now fcoe module has its own header file fcoe.h. [jejb: removed EXPORT_SYMBOL_GPL(fcoe_fc_crc) which caused a section mismatch] Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-17 11:42:24 -07:00
[SCSI] fcoe: Fibre Channel over Ethernet Encapsulation protocol for running Fibre Channel over Ethernet interfaces. Creates virtual Fibre Channel host adapters using libfc. This layer is the LLD to the scsi-ml. It allocates the Scsi_Host, utilizes libfc for Fibre Channel protocol processing and interacts with netdev to send/receive Ethernet packets. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-09 15:10:24 -08:00