- 13 May, 2016 10 commits
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Christoph Hellwig authored
Replace the homegrown RDMA READ/WRITE code in isert with the generic API, which also adds iWarp support to the I/O path as a side effect. Note that full iWarp operation will need a few additional patches from Steve. Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Doug Ledford <dledford@redhat.com>
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Christoph Hellwig authored
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Christoph Hellwig authored
Replace the homegrown RDMA READ/WRITE code in srpt with the generic API. The only real twist here is that we need to allocate one Linux scatterlist per direct buffer in the SRP command, and chain them before handing them off to the target core. As a side-effect of the conversion the driver will also chain the SEND of the SRP response to the RDMA WRITE WRs for a DATA OUT command, and properly account for RDMA WRITE WRs instead of just for RDMA READ WRs like the driver previously did. We now allocate half of the SQ size to RDMA READ/WRITE contexts, assuming by default one RDMA READ or WRITE operation per command. If a command has multiple operations it will eat into the budget but will still succeed, possible after waiting for WQEs to be available. Also ensure the QPs request the maximum allowed SGEs so that RDMA R/W API works correctly. Signed-off-by:
Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by:
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Christoph Hellwig authored
The SRP target driver will need to allocate and chain it's own SGLs soon. For this export target_alloc_sgl, and add a new argument to it so that it can allocate an additional chain entry that doesn't point to a page. Also export transport_free_sgl after renaming it to target_free_sgl to free these SGLs again. Signed-off-by:
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Christoph Hellwig authored
This supports both manual mapping of lots of SGEs, as well as using MRs from the QP's MR pool, for iWarp or other cases where it's more optimal. For now, MRs are only used for iWARP transports. The user of the RDMA-RW API must allocate the QP MR pool as well as size the SQ accordingly. Thanks to Steve Wise for testing, fixing and rewriting the iWarp support, and to Sagi Grimberg for ideas, reviews and fixes. Signed-off-by:
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Steve Wise authored
This is the first step toward moving MR invalidation decisions to the core. It will be needed by the upcoming RW API. Signed-off-by:
Steve Wise <swise@opengridcomputing.com> Reviewed-by:
Sagi Grimberg <sagi@grimberg.me> Reviewed-by:
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Christoph Hellwig authored
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Christoph Hellwig authored
Split the XRC magic into a separate function, and return early on failure to make the initialization code readable. Signed-off-by:
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Christoph Hellwig authored
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Christoph Hellwig authored
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- 12 May, 2016 12 commits
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Christoph Hellwig authored
The new RW API will need this. Signed-off-by:
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Doug Ledford authored
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Saeed Mahameed authored
Adding the needed mlx5_ifc hardware bits and structs for the following features: * Add vport to steering commands for SRIOV ACL support * Add mlcr, pcmr and mcia registers for dump module EEPROM * Add support for FCS, beacon led and disable_link bits to hca caps * Add CQE period mode bit in CQ context for CQE based CQ moderation support * Add umr SQ bit for fragmented memory registration * Add needed bits and caps for Striding RQ support In-order to avoid possible future conflicts between rdma and net-next we added all expected updates to this file for this release. If more changes will be submitted, we plan to do it only through one of the subsystems, probably net-next. All updated bits in this patch will be later used in the up-coming submissions to net-next and rdma trees. Signed-off-by:
Saeed Mahameed <saeedm@mellanox.com> Signed-off-by:
Matan Barak <matanb@mellanox.com> Acked-by:
Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by:
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Tariq Toukan authored
All reserved fields after early_vf_enable are off by 1, since early_vf_enable was not explicitly declared as array of size 1. Reserved field before cqe_zip had a wrong size, it should be 0x80 + 0x3f. Fixes: b0844444 ("net/mlx5_core: Introduce access function to read internal timer ") Fixes: b4ff3a36 ("net/mlx5: Use offset based reserved field names in the IFC header file") Signed-off-by:
Tariq Toukan <tariqt@mellanox.com> Signed-off-by:
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Bart Van Assche authored
Signed-off-by:
Sagi Grimberg <sai@grimberg.m> Reviewed-by:
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Bart Van Assche authored
Since all srp_map_finish_fr() callers pass a non-zero value as the fourth argument (sg_nents), the sg_nents == 0 check in that function can be removed. Add a count == 0 check in the caller of that function. Signed-off-by:
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Bart Van Assche authored
The srp_queuecommand() function translates ENOMEM into QUEUE_FULL which causes the SCSI mid-layer to retry the command. All other error codes are translated into DID_ERROR which causes the SCSI command to fail. Return E2BIG if mapping will always fail to prevent that the SCSI mid-layer keeps resubmitting a command forever. Signed-off-by:
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Bart Van Assche authored
This patch does not change any functionality. Signed-off-by:
Sagi Grimberg <sagig@mellanox.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Laurence Oberman <loberman@redhat.com> Reviewed-by:
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Bart Van Assche authored
Ensure that req->nmdesc is set correctly in srp_map_sg() if mapping fails. Avoid that mapping failure causes a memory descriptor leak. Report srp_map_sg() failure to the caller. Signed-off-by:
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Bart Van Assche authored
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Bart Van Assche authored
The free request list was removed through patch "IB/srp: Use block layer tags". Hence update a comment that refers to that free request list. Signed-off-by:
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Bart Van Assche authored
Change one occurrence of "boundries" into "boundaries". Signed-off-by:
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- 05 May, 2016 11 commits
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Doug Ledford authored
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Hariprasad S authored
Use c4iw_ep_disconnect() instead. This is part of getting rid of abort_connection() altogether so we properly clean up on send_abort() failures. This is the last user of abort_connection(), so remove it too. Signed-off-by:
Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by:
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Hariprasad S authored
In c4iw_ep_disconnect(), if we fail to initiate a close operation, then move the qp to ERROR to disassociate the ep from the qp. Failure to do this will leak the ep resources. Signed-off-by:
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Hariprasad S authored
Instead return whether the caller needs to disconnect. This is part of getting rid of abort_connection() altogether so we properly clean up on send_abort() failures. Signed-off-by:
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Hariprasad S authored
Use c4iw_ep_disconnect() instead. This is part of getting rid of abort_connection() altogether so we properly clean up on send_abort() failures. Signed-off-by:
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Hariprasad S authored
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Hariprasad S authored
Instead, have the caller, rx_data() handle the close/abort like it does for process_mpa_request(). This is part of getting rid of abort_connection() altogether so we properly clean up on send_abort() failures. Signed-off-by:
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Hariprasad S authored
In rx_data(), with the ep in FPDU_MODE, refcnt=2, if we get unexpected streaming data, we call c4iw_modify_rc_qp() and move the qp from RTS -> TERMINATE. In c4iw_modify_rc_qp(), if rdma_fini() returns an error, the ep will be dereferenced (refcnt=1). Then rx_data() calls c4iw_ep_disconnect() which starts the close operation. But if send_halfclose() fails in c4iw_ep_disconnect(), we will call release_ep_resources() derefing the ep which reduces the refcnt to 0 and and frees the ep. However we still has the ep mutex at that point, so we have a touch-after-free bug. There is a similar issue where peer_close() calls c4iw_ep_disconnect(). The solution is to add a reference to the ep in c4iw_ep_disconnect() after acquiring the mutex, and release it after releasing the mutex. Signed-off-by:
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Hariprasad S authored
In c4iw_ep_disconnect(), if we start the ep timer to begin a close, but send_halfclose() fails, we need to stop the timer and send a CLOSE event up to the IWCM before releasing the resources. Otherwise, we can crash when the ep timer fires if the ep is referencing a previous instance of the device. This can happen as part of adapter reset/recovery, for instance. Signed-off-by:
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Hariprasad S authored
If ARP fails before the CPL_PASS_ACCEPT_RPL is seen by hardware, the tid will be stuck in SYN_PEND and never released. So create an arp failure handler specifically for this message to release the endpoint resources. In pass_accept_rpl_arp_failure(), put the parent endpoint so it will be freed when destroyed. Also we don't need to call release_tid() here because _c4iw_free_ep() calls cxgb4_remove_tid() which releases the hwtid. If we get an ABORT_REQ_RSS instead of a PASS_ESTABLISH (because the peer's ACK to our SYN is never received), then put the parent as well in peer_abort(). Treat accept_cr() failures just like arp failures: put the parent ep and release the ep resources destroying the tid The ARP failure handlers are called in an atomic context, so we need to schedule some of the processing which might block. Namely _c4iw_free_ep() which needs a mutex. So create a "special" CPL opcode and handler and schedule it via sched() to be run by process_work() in a blockable context. Also rework the active open arp failure handler to make use of release_ep_resources(). This allows both the active and passive arp failure handlers to use the same deferred cleanup function. Signed-off-by:
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Christoph Hellwig authored
iSER currently has a couple places that set max_sectors in either the host template or SCSI host, and all of them get it wrong. This patch instead uses a single assignment that (hopefully) gets it right: the max_sectors value must be derived from the number of segments in the FR or FMR structure, but actually be one lower than the page size multiplied by the number of sectors, as it has to handle the case of non-aligned I/O. Without this I get trivial to reproduce hangs when running xfstests (on XFS) over iSER to Linux targets. Signed-off-by:
Max Gurtovoy <maxg@mellanox.com> Acked-by:
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- 29 Apr, 2016 1 commit
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Florian Westphal authored
Alternatively one could free the skb, OTOH I don't think this test is useful so just remove it. Cc: <linux-rdma@vger.kernel.org> Signed-off-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
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- 28 Apr, 2016 6 commits
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Tatyana Nikolova authored
Fix for removing a quad hash entry when the corresponding quad hash entry hasn't been added, which is the case in loopback connections Signed-off-by:
Tatyana Nikolova <Tatyana.E.Nikolova@intel.com> Signed-off-by:
Faisal Latif <faisal.latif@intel.com> Signed-off-by:
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Tatyana Nikolova authored
Fix for checking if the QP associated with a completion has been destroyed while processing CQ elements. If that is the case, move the CQ head to the next element and continue completion processing. Signed-off-by:
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Shiraz Saleem authored
A check is added to validate the requested sge number. iWARP doesn't support multiple sg elements for RDMA READ work requests. Signed-off-by:
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Shiraz Saleem authored
Fix to calculate the SQ size based on the max frag_count, requested by the application instead of overwriting it with the max supported frag_count Signed-off-by:
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Mohammad Khan authored
Fix for filling in the WQE size for NOP Signed-off-by:
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Chien Tin Tung authored
STag index mask is calculated incorrectly, missing the 14 bits minimum requirement. Add max macro to use either # of MRs or 14 bits in the mask size calculation. Signed-off-by:
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