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- 23 Jul, 2023 1 commit
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Justin Tee authored
During initialization, a lot of the same logic is used on MSI-X vector CPU affinity assignment. Create a lpfc_next_present_cpu() helper routine, and apply its usage for refactoring purposes. Signed-off-by:
Justin Tee <justin.tee@broadcom.com> Link: https://lore.kernel.org/r/20230712180522.112722-10-justintee8345@gmail.comSigned-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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- 31 May, 2023 2 commits
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Justin Tee authored
Update copyrights to 2023 for files modified in the 14.2.0.13 patch set. Signed-off-by:
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Justin Tee authored
There is mishandling of SLI-4 CQE status values larger than what is allowed by the LPFC_IOCB_STATUS_MASK of 4 bits. The LPFC_IOCB_STATUS_MASK is a leftover SLI-3 construct and serves no purpose in SLI-4 path. Remove the LPFC_IOCB_STATUS_MASK and clean up general CQE status handling in SLI-4 completion paths. Signed-off-by:
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- 22 Feb, 2023 1 commit
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Bo Liu authored
Remove the repeated word "the" in comments. [mkp: fixed additional typos in the changed lines] Link: https://lore.kernel.org/r/20230217083046.4090-1-liubo03@inspur.comSigned-off-by:
Bo Liu <liubo03@inspur.com> Reviewed-by:
Randy Dunlap <rdunlap@infradead.org> Signed-off-by:
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- 07 Jul, 2022 1 commit
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James Smart authored
lpfc_nvmet_prep_abort_wqe() has a lot of common code with lpfc_sli_prep_abort_xri(). Delete lpfc_nvmet_prep_abort_wqe() as the wqe can be filled out using the generic lpfc_sli_prep_abort_xri routine(). Add the wqec option to lpfc_sli_prep_abort_xri() for lpfc_nvmet_prep_abort_wqe(). Link: https://lore.kernel.org/r/20220701211425.2708-10-jsmart2021@gmail.comCo-developed-by:
James Smart <jsmart2021@gmail.com> Signed-off-by:
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- 17 Jun, 2022 1 commit
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Xiu Jianfeng authored
Use memset_startat() helper to simplify the code, no functional changes. Link: https://lore.kernel.org/r/20220613021851.59699-1-xiujianfeng@huawei.comReviewed-by:
Xiu Jianfeng <xiujianfeng@huawei.com> Signed-off-by:
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- 19 Apr, 2022 1 commit
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James Smart authored
The lpfc_iocbq data structure has void * pointers that are overloaded to be as many as 8 different data types and the driver translates the void * by casting. This patch removes the void * pointers by declaring the specific types needed by the driver. It also expands the context_un to include more seldom used pointer types to save structure bytes. It also groups the u8 types together to pack the 8 bytes needed. This work allows the lpfc_iocbq data structure to be more strongly typed and keeps it from being allocated from the 512 byte slab. [mkp: rolled in zeroday fix] Link: https://lore.kernel.org/r/20220412222008.126521-21-jsmart2021@gmail.comReported-by:
kernel test robot <lkp@intel.com> Co-developed-by:
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- 15 Mar, 2022 2 commits
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James Smart authored
Update copyrights to 2022 for files modified in the 14.2.0.0 patch set. Link: https://lore.kernel.org/r/20220225022308.16486-18-jsmart2021@gmail.comCo-developed-by:
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James Smart authored
Currently, SLI3 and SLI4 data paths use the same lpfc_iocbq structure. This is a "common" structure but many of the components refer to sli-rev specific entities which can lead the developer astray as to what they actually mean, should be set to, or when they should be used. This first patch prepares the lpfc_iocbq structure so that elements common to both SLI3 and SLI4 data paths are more appropriately named, making it clear they apply generically. Fieldnames based on 'iocb' (sli3) or 'wqe' (sli4) which are actually generic to the paths are renamed to 'cmd': - iocb_flag is renamed to cmd_flag - lpfc_vmid_iocb_tag is renamed to lpfc_vmid_tag - fabric_iocb_cmpl is renamed to fabric_cmd_cmpl - wait_iocb_cmpl is renamed to wait_cmd_cmpl - iocb_cmpl and wqe_cmpl are combined and renamed to cmd_cmpl - rsvd2 member is renamed to num_bdes due to pre-existing usage The structure name itself will retain the iocb reference as changing to a more relevant "job" or "cmd" title induces many hundreds of line changes for only a name change. lpfc_post_buffer is also renamed to lpfc_sli3_post_buffer to indicate use in the SLI3 path only. Link: https://lore.kernel.org/r/20220225022308.16486-2-jsmart2021@gmail.comCo-developed-by:
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- 15 Sep, 2021 1 commit
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James Smart authored
The PBDE feature, setting payload buffer address explicitly in the WQE so it doesn't have to be fetched from the SGL, only makes sense when there is a single buffer for the I/O. When there are multiple buffers it actually hurts performance as the SGL subsequently has to be fetched. Rework the SGL logic to only use PBDE when a single buffer. Link: https://lore.kernel.org/r/20210910233159.115896-14-jsmart2021@gmail.comCo-developed-by:
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- 31 Jul, 2021 1 commit
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James Smart authored
The lpfc_sli4_nvmet_xri_aborted() routine takes out the abts_buf_list_lock and traverses the buffer contexts to match the xri. Upon match, it then takes the context lock before potentially removing the context from the associated buffer list. This violates the lock hierarchy used elsewhere in the driver of locking context, then the abts_buf_list_lock - thus a possible deadlock. Resolve by: after matching, release the abts_buf_list_lock, then take the context lock, and if to be deleted from the list, retake the abts_buf_list_lock, maintaining lock hierarchy. This matches same list lock hierarchy as elsewhere in the driver Link: https://lore.kernel.org/r/20210730163309.25809-1-jsmart2021@gmail.comReported-by:
Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by:
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- 13 Apr, 2021 1 commit
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James Smart authored
Remove hbalock dependency for lpfc_abts_els_sgl_list and lpfc_abts_nvmet_ctx_list. The lists are adaquately synchronized with the sgl_list_lock and abts_nvmet_buf_list_lock. Link: https://lore.kernel.org/r/20210412013127.2387-5-jsmart2021@gmail.comCo-developed-by:
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- 04 Mar, 2021 2 commits
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James Smart authored
For the files modified in 2021 via the 12.8.0.7 and 12.8.0.8 patch sets, update the copyright for 2021. Link: https://lore.kernel.org/r/20210301171821.3427-23-jsmart2021@gmail.comCo-developed-by:
Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by:
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James Smart authored
The wqe_dbde field indicates whether a Data BDE is present in Words 0:2 and should therefore should be clear in the abts request wqe. By setting the bit we can be misleading fw into error cases. Clear the wqe_dbde field. Link: https://lore.kernel.org/r/20210301171821.3427-2-jsmart2021@gmail.comCo-developed-by:
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- 08 Jan, 2021 1 commit
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James Smart authored
When lpfc is running in NVMET mode and supports the NVME-1 addendum changes, a LIP on a bound NVME Initiator or lipping the lpfc NVMET's link resulted in an Oops in lpfc_nvmet_host_release. The fix requires lpfc NVMET to maintain an additional reference on any node structure that acts as the hosthandle for the NVMET transport. This reference get is a one-time addition, is taken prior to the upcall of an unsolicited LS_REQ, and is released when the NVMET transport releases the hosthandle during the host_release downcall. Link: https://lore.kernel.org/r/20210104180240.46824-13-jsmart2021@gmail.comCo-developed-by:
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- 20 Nov, 2020 1 commit
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James Smart authored
lpfc_nvmet_prep_abort_wqe() needs to be declared static. Link: https://lore.kernel.org/r/20201119203316.121725-1-james.smart@broadcom.com Fixes: db7531d2 ("scsi: lpfc: Convert abort handling to SLI-3 and SLI-4 handlers") Reported-by:
James Smart <james.smart@broadcom.com> Signed-off-by:
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- 17 Nov, 2020 4 commits
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James Smart authored
Update Copyright in files changed by the 12.8.0.6 patch set to 2020 Link: https://lore.kernel.org/r/20201115192646.12977-18-james.smart@broadcom.comCo-developed-by:
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James Smart authored
This patch reworks the abort interfaces such that SLI-3 retains the iocb-based formatting and completions and SLI-4 now uses native WQEs and completion routines. The following changes are made: - The code is refactored from a confusing 2 routine sequence of xx_abort_iotag_issue(), which creates/formats and abort cmd, and xx_issue_abort_tag(), which then issues and handles the completion of the abort cmd - into a single interface of xx_issue_abort_iotag(). The new interface will determine whether SLI-3 or SLI-4 and then call the appropriate handler. A completion handler can now be specified to address the differences in completion handling. Note: original code is all iocb based, with SLI-4 converting to SLI-3 for the SCSI/ELS path, and NVMe natively using wqes. - The SLI-3 side is refactored: The older iocb-base lpfc_sli_issue_abort_iotag() routine is combined with the logic of lpfc_sli_abort_iotag_issue() as well as the iocb-specific code in lpfc_abort_handler() and lpfc_sli_abort_iocb() to create the new single SLI-3 abort routine that formats and issues the iocb. - The SLI-4 side is refactored and added to: The native WQE abort code in NVMe is moved to the new SLI-4 issue_abort_iotag() routine. Items in SCSI that set fields not set by NVMe is migrated into the new routine. Thus the routine supports NVMe and SCSI initiators. The nvmet block (target) formats the abort slightly different (like the old NVMe initiator) thus it has its own prep routine stolen from NVMe initiator and it retains the current code it has for issuing the WQE (does not use the commonized routine the initiators do). SLI-4 completion handlers were also added. - lpfc_abort_handler now becomes a wrapper that determines whether SLI-3 or SLI-4 and calls the proper abort handler. Link: https://lore.kernel.org/r/20201115192646.12977-16-james.smart@broadcom.comCo-developed-by:
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James Smart authored
In preparation of reworking the driver to use a native SLI-4 WQE interface for the SCSI and NVMe I/O paths, start by commonizing the WQE exchange type and command type attributes. While adjusting these options also noted the variance in the pbde field. Fix this by setting templates to 0 and in NVMe, which explicitly uses this option, setting the value. Link: https://lore.kernel.org/r/20201115192646.12977-11-james.smart@broadcom.comCo-developed-by:
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James Smart authored
When a remote port is disconnected and disappears, its node structure (ndlp) stays allocated and on a vport node list. While on the list it can be matched, thus requires validation checks on state to be added in numerous code paths. If the node comes back, its possible for there to be multiple node structures for the same device on the vport node list. There is no reason to keep the node structure around after it is no longer in existence, and the current implementation creates problems for itself (multiple nodes) and lots of unnecessary code for state validation. Additionally, the reference taking on the node structure didn't follow the normal model used by the kernel kref api. It included lots of odd logic to match state with reference count. The combination of this odd logic plus the way it was implicitly used in the discovery engine made its reference taking implementation suspect and extremely hard to follow. Change the driver such that the reference taking routines are now normal ref increments/decrements and callout on refcount=0. With this in place, the rework can be done such that the node structure is fully removed and deallocated when the remote port no longer exists and all references are removed. This removal logic, and the basic ref counting are intrically tied, thus in a single patch. Link: https://lore.kernel.org/r/20201115192646.12977-2-james.smart@broadcom.comCo-developed-by:
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- 11 Nov, 2020 1 commit
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvmet.c:386: warning: Function parameter or member 'ctx_buf' not described in 'lpfc_nvmet_ctxbuf_post' drivers/scsi/lpfc/lpfc_nvmet.c:386: warning: Excess function parameter 'ctxp' description in 'lpfc_nvmet_ctxbuf_post' drivers/scsi/lpfc/lpfc_nvmet.c:386: warning: Excess function parameter 'mp' description in 'lpfc_nvmet_ctxbuf_post' drivers/scsi/lpfc/lpfc_nvmet.c:1310: warning: Function parameter or member 'targetport' not described in 'lpfc_nvmet_ls_req' drivers/scsi/lpfc/lpfc_nvmet.c:1310: warning: Function parameter or member 'hosthandle' not described in 'lpfc_nvmet_ls_req' drivers/scsi/lpfc/lpfc_nvmet.c:1310: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvmet_ls_req' drivers/scsi/lpfc/lpfc_nvmet.c:1350: warning: Function parameter or member 'hosthandle' not described in 'lpfc_nvmet_ls_abort' drivers/scsi/lpfc/lpfc_nvmet.c:1350: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvmet_ls_abort' drivers/scsi/lpfc/lpfc_nvmet.c:3607: warning: Function parameter or member 'phba' not described in 'lpfc_nvmet_invalidate_host' drivers/scsi/lpfc/lpfc_nvmet.c:3607: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvmet_invalidate_host' Link: https://lore.kernel.org/r/20201102142359.561122-15-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by:
Lee Jones <lee.jones@linaro.org> Signed-off-by:
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- 05 Aug, 2020 1 commit
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Ewan D. Milne authored
We cannot wait on a completion object in the lpfc_nvme_targetport structure in the _destroy_targetport() code path because the NVMe/fc transport will free that structure immediately after the .targetport_delete() callback. This results in a use-after-free, and a crash if slub_debug=FZPU is enabled. An earlier fix put put the completion on the stack, but commit 2a0fb340 ("scsi: lpfc: Correct localport timeout duration error") subsequently changed the code to reference the completion through a pointer in the object rather than the local stack variable. Fix this by using the stack variable directly. Link: https://lore.kernel.org/r/20200729231011.13240-1-emilne@redhat.com Fixes: 2a0fb340 ("scsi: lpfc: Correct localport timeout duration error") Reviewed-by:
Ewan D. Milne <emilne@redhat.com> Signed-off-by:
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- 03 Jul, 2020 1 commit
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Dick Kennedy authored
The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.comSigned-off-by:
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- 27 May, 2020 2 commits
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James Smart authored
The axchg structure is a structure allocated early in the lpfc_nvme_unsol_ls_handler() to represent the newly received exchange. Upon error, the out_fail path in the routine unconditionally frees the pointer, yet subsequently passes the pointer to the abort routine. Additionally, the abort routine, lpfc_nvme_unsol_ls_issue_abort(), also has a failure path that will attempt to delete the pointer on error. Fix these errors by: - Removing the unconditional free so that it stays valid if passed to the abort routine. - Revise the abort routine to not free the pointer. Instead, return a success/failure status. Note: if success, the later completion of the abort frees the structure. - Back in the unsol_ls_handler() error path, if the abort routine was skipped (thus no possible reference) or the abort routine returned error, free the pointer. Fixes: 3a8070c5 ("lpfc: Refactor NVME LS receive handling") Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
Christoph Hellwig <hch@lst.de>
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James Smart authored
Additional testing encountered null pointers that weren't fully qualified in lpfc_nvmet_xmt_ls_abort_cmp() and lpfc_nvmet_unsol_issue_abort(). The same error was detected and reported by static checker reporting: drivers/scsi/lpfc/lpfc_sli.c:2905 lpfc_nvme_unsol_ls_handler() error: we previously assumed 'phba->targetport' could be null (see line 2837) Fix by making phba->nvmet_support and phba->targetport validity checks in lpfc_nvmet_xmt_ls_abort_cmp() and lpfc_nvmet_unsol_issue_abort(). Fixes: 3a8070c5 (“lpfc: Refactor NVME LS receive handling”) Reported-by:Paul Ely <paul.ely@broadcom.com> Signed-off-by:
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- 09 May, 2020 8 commits
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James Smart authored
Now that common helpers exist, add the ability to Send an NVME LS Request and to Abort an outstanding LS Request to the nvmet side of the driver. Signed-off-by:
Jens Axboe <axboe@kernel.dk>
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James Smart authored
As the nvmet layer does not have the concept of a remoteport object, which can be used to identify the entity on the other end of the fabric that is to receive an LS, the hosthandle was introduced. The driver passes the hosthandle, a value representative of the remote port, with a ls request receive. The LS request will create the association. The transport will remember the hosthandle for the association, and if there is a need to initiate a LS request to the remote port for the association, the hosthandle will be used. When the driver loses connectivity with the remote port, it needs to notify the transport that the hosthandle is no longer valid, allowing the transport to terminate associations related to the hosthandle. This patch adds support to the driver for the hosthandle. The driver will use the ndlp pointer of the remote port for the hosthandle in calls to nvmet_fc_rcv_ls_req(). The discovery engine is updated to invalidate the hosthandle whenever connectivity with the remote port is lost. Signed-off-by:
Hannes Reinecke <hare@suse.de> Signed-off-by:
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James Smart authored
Currently, the ability to send an NVME LS response is limited to the nvmet (controller/target) side of the driver. In preparation of both the nvme and nvmet sides supporting Send LS Response, rework the existing send ls_rsp and ls_rsp completion routines such that there is common code that can be used by both sides. Signed-off-by:
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James Smart authored
In preparation for supporting both intiator mode and target mode receiving NVME LS's, commonize the existing NVME LS request receive handling found in the base driver and in the nvmet side. Using the original lpfc_nvmet_unsol_ls_event() and lpfc_nvme_unsol_ls_buffer() routines as a templates, commonize the reception of an NVME LS request. The common routine will validate the LS request, that it was received from a logged-in node, and allocate a lpfc_async_xchg_ctx that is used to manage the LS request. The role of the port is then inspected to determine which handler is to receive the LS - nvme or nvmet. As such, the nvmet handler is tied back in. A handler is created in nvme and is stubbed out. Signed-off-by:
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James Smart authored
The last step of commonization is to remove the 'T' suffix from state and flag field definitions. This is minor, but removes the mental association that it solely applies to nvmet use. Signed-off-by:
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James Smart authored
To support FC-NVME-2 support (actually FC-NVME (rev 1) with Ammendment 1), both the nvme (host) and nvmet (controller/target) sides will need to be able to receive LS requests. Currently, this support is in the nvmet side only. To prepare for both sides supporting LS receive, rename lpfc_nvmet_rcv_ctx to lpfc_async_xchg_ctx and commonize the definition. Signed-off-by:
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James Smart authored
A lot of files in lpfc include nvme headers, building up relationships that require a file to change for its headers when there is no other change necessary. It would be better to localize the nvme headers. There is also no need for separate nvme (initiator) and nvmet (tgt) header files. Refactor the inclusion of nvme headers so that all nvme items are included by lpfc_nvme.h Merge lpfc_nvmet.h into lpfc_nvme.h so that there is a single header used by both the nvme and nvmet sides. This prepares for structure sharing between the two roles. Prep to add shared function prototypes for upcoming shared routines. Signed-off-by:
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James Smart authored
The current LLDD api has: nvme-fc: contains api for transport to do LS requests (and aborts of them). However, there is no interface for reception of LS's and sending responses for them. nvmet-fc: contains api for transport to do reception of LS's and sending of responses for them. However, there is no interface for doing LS requests. Revise the api's so that both nvme-fc and nvmet-fc can send LS's, as well as receiving LS's and sending their responses. Change name of the rcv_ls_req struct to better reflect generic use as a context to used to send an ls rsp. Specifically: nvmefc_tgt_ls_req -> nvmefc_ls_rsp nvmefc_tgt_ls_req.nvmet_fc_private -> nvmefc_ls_rsp.nvme_fc_private Change nvmet_fc_rcv_ls_req() calling sequence to provide handle that can be used by transport in later LS request sequences for an association. nvme-fc nvmet_fc nvme_fcloop: Revise to adapt to changed names in api header. Change calling sequence to nvmet_fc_rcv_ls_req() for hosthandle. Add stubs for new interfaces: host/fc.c: nvme_fc_rcv_ls_req() target/fc.c: nvmet_fc_invalidate_host() lpfc: Revise to adapt code to changed names in api header. Change calling sequence to nvmet_fc_rcv_ls_req() for hosthandle. Signed-off-by:Sagi Grimberg <sagi@grimberg.me> Reviewed-by:
Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by:
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- 22 Apr, 2020 1 commit
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James Smart authored
During code reviews several instances of duplicate module unloading checks were found. Remove the duplicate checks. Link: https://lore.kernel.org/r/20200421203354.49420-1-jsmart2021@gmail.comReviewed-by:
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- 29 Mar, 2020 1 commit
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James Smart authored
The cpu io statistics were capped by a hard define limit of 128. This effectively was a max number of CPUs, not an actual CPU count, nor actual CPU numbers which can be even larger than both of those values. This made stats off/misleading and on large CPU count systems, wrong. Fix the stats so that all CPUs can have a stats struct. Fix the looping such that it loops by hdwq, finds CPUs that used the hdwq, and sum the stats, then display. Link: https://lore.kernel.org/r/20200322181304.37655-9-jsmart2021@gmail.comSigned-off-by:
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- 27 Mar, 2020 1 commit
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James Smart authored
In lpfc_nvmet_prep_fcp_wqe() the line "rsp->sg_cnt = 0" is modifying the transport's data structure. This may result in the transport believing the s/g list was already freed, thus may not unmap/free it properly. Lpfc driver should not modify the transport data structure. The zeroing of the sg_cnt is to avoid use of the transport's sgl in a subsequent loop where the driver builds the necessary requests for the adapter firmware to complete the IO. Change LLDD to use a local copy of the transport sg_cnt when building requests to be passed to the adapter fw. Link: https://lore.kernel.org/r/20200322181304.37655-4-jsmart2021@gmail.comSigned-off-by:
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- 25 Oct, 2019 2 commits
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Saurav Girepunje authored
Replace assignment of 0 to pointer with NULL assignment. Link: https://lore.kernel.org/r/20191024030857.GA12097@sauravSigned-off-by:
Saurav Girepunje <saurav.girepunje@gmail.com> Acked-by:
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James Smart authored
Lower IOps performance with write operations. Perf tool shows lock contention in dma_pool_alloc and dma_pool_free related to the txrdy_payload_pool. The allocations are for dma buffers for XFER_RDY's, which actually are not needed for the FCP_TRECEIVE command as the command contents are used by the adapter to generate the IU. Remove the allocations and the associated buffer pool. Rather than leaving NULLs in buffer pointer locations, set command and sgl to indicate skipped SGLE indexes. Link: https://lore.kernel.org/r/20191018211832.7917-10-jsmart2021@gmail.comSigned-off-by:
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- 01 Oct, 2019 2 commits
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James Smart authored
Coverity flagged several scenarios where checking of null pointer values wasn't consistent. Fix the code to that be consistent on checking. Link: https://lore.kernel.org/r/20190922035906.10977-12-jsmart2021@gmail.comSigned-off-by:
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James Smart authored
When the port, running as a nvme target, receives an ABTS, it submits commands to the adapter to Abort i/o outstanding in the adapter. The Abort command formatting routine left a command field set to zero, which instructs the adapter to generate an ABTS on the wire as part of cleaning up the I/O. This is common operation for an initiator, but not for a target. Fix the driver to check whether an ABTS had been received for the I/O, and if so, change the Abort command formatting so that the ABTS generation is disabled (IA=1). No need to ABTS it when the other side already has. Also refactored the code such that there is a single routine being used for nvme or nvmet ABORT requests, and IA is an argument. Link: https://lore.kernel.org/r/20190922035906.10977-11-jsmart2021@gmail.comSigned-off-by:
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