- 02 Aug, 2022 40 commits
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Christoph Hellwig authored
Just do a simple list_for_each_entry_safe on all_mddevs, and only grab a reference when we drop the lock and delete the now unused for_each_mddev macro. Signed-off-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
Logan Gunthorpe <logang@deltatee.com> Reviewed-by:
Hannes Reinecke <hare@suse.de> Signed-off-by:
Song Liu <song@kernel.org> Signed-off-by:
Jens Axboe <axboe@kernel.dk>
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Christoph Hellwig authored
Just do a simple list_for_each_entry_safe on all_mddevs, and only grab a reference when we drop the lock. Reviewed-by:
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Christoph Hellwig authored
Just do a plain list_for_each that only grabs a mddev reference in the case where the thread sleeps and restarts the list iteration. Signed-off-by:
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Christoph Hellwig authored
This splits the code into nicely readable chunks and also avoids the refcount inc/dec manipulations. Signed-off-by:
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Christoph Hellwig authored
The md_free name is rather misleading, so pick a better one. Signed-off-by:
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Christoph Hellwig authored
Ensure that all private data is only freed once all accesses are done. Signed-off-by:
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Christoph Hellwig authored
Error handling in md_alloc is a mess. Untangle it to just free the mddev directly before add_disk is called and thus the gendisk is globally visible. After that clear the hold flag and let the mddev_put take care of cleaning up the mddev through the usual mechanisms. Fixes: 5e55e2f5 ("[PATCH] md: convert compile time warnings into runtime warnings") Fixes: 9be68dd7 ("md: add error handling support for add_disk()") Fixes: 7ad10691 ("md: properly unwind when failing to add the kobject in md_alloc") Signed-off-by:
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Christoph Hellwig authored
Once a kobject is initialized, the containing object should not be directly freed. So delay initialization until it is added. Also remove the kobject_del call as the last put will remove the kobject as well. The explicitly delete isn't needed here, and dropping it will simplify further fixes. With this md_free now does not need to check that ->gendisk is non-NULL as it is always set by the time that kobject_init is called on mddev->kobj. Signed-off-by:
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Logan Gunthorpe authored
raid5_get_active_stripe() can sleep in various situations and it is called by make_stripe_request() while inside the prepare_to_wait()/finish_wait() section. Nested waits like this are not supported. This was noticed while making other changes that add different sleeps to raid5_get_active_stripe() that caused a WARNING with CONFIG_DEBUG_ATOMIC_SLEEP. No ill effects have been noticed with the code as is, but theoretically a nested and here could cause a dead lock so it should be fixed. To fix this, convert the prepare_to_wait() call to use wake_woken() which supports nested sleeps. Link: https://lwn.net/Articles/628628/Signed-off-by:
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Logan Gunthorpe authored
For unaligned IO that have nearly maximum sectors, the number of stripes will end up being one greater than the size of the bitmap. When this happens, the last stripe in the IO will not be processed as it should be, resulting in data corruption. However, this is not normally seen when the backing block devices have 4K physical block sizes since the block layer will split the request before that happens. To fix this increase the bitmap size by one bit and ensure the full number of stripes are checked when calling find_first_bit(). Reported-by:
David Sloan <David.Sloan@eideticom.com> Fixes: 7e55c60a ("md/raid5: Pivot raid5_make_request()") Signed-off-by:
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Coly Li authored
The "Asynchronous device registration (EXPERIMENTAL)" Kconfig option is for 2+ years, it is used when registration takes too much time for massive amount of cached data, to avoid udev task timeout during boot time. Many users and products enable this Kconfig option for quite long time (e.g. SUSE Linux) and it works as expected and no issue reported. It is time to remove the "EXPERIMENTAL" tag from this Kconfig item. Signed-off-by:
Coly Li <colyli@suse.de> Link: https://lore.kernel.org/r/20220719042724.8498-2-colyli@suse.deSigned-off-by:
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Yu Kuai authored
commit 1243172d ("nbd: use pr_err to output error message") tries to define pr_fmt and use short pr_err() to output error message, however, the definition is missed. This patch also remove existing "nbd:" inside pr_err(). Fixes: 1243172d ("nbd: use pr_err to output error message") Signed-off-by:
Yu Kuai <yukuai3@huawei.com> Reviewed-by:
Josef Bacik <josef@toxicpanda.com> Link: https://lore.kernel.org/r/20220723082427.3890655-1-yukuai1@huaweicloud.comSigned-off-by:
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Dan Carpenter authored
There needs to be some error checking if ida_simple_get() fails. Also call ida_free() if there are errors later. Fixes: 94bc02e3 ("nullb: use ida to manage index") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/YtEhXsr6vJeoiYhd@kiliSigned-off-by:
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Joel Granados authored
Pass anagrpid as second argument. This is prep patch that allows reusing this function for supporting unknown command sets. Signed-off-by:
Joel Granados <j.granados@samsung.com> Signed-off-by:
Kanchan Joshi <joshi.k@samsung.com> Signed-off-by:
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Guixin Liu authored
Use nvme core helper nvme_cancel_tagset and nvme_cancel_admin_tagset instead of same logic code. Signed-off-by:
Guixin Liu <kanie@linux.alibaba.com> Reviewed-by:
Sagi Grimberg <sagi@grimberg.me> Reviewed-by:
Ruozhu Li <liruozhu@huawei.com> Reviewed-by:
Sven Peter <sven@svenpeter.dev> Signed-off-by:
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Guixin Liu authored
Use nvme core helper nvme_cancel_tagset and nvme_cancel_admin_tagset instead of same logic code. Signed-off-by:
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Caleb Sander authored
Currently, command data is only sent in-capsule on the for admin or I/O commands on queues that indicate support for it. Send fabrics command data in-capsule for I/O queues as well to avoid needing a separate H2CData PDU for the connect command. This is optimization. Without this change, we send the connect command capsule and data in separate PDUs (CapsuleCmd and H2CData), and must wait for the controller to respond with an R2T PDU before sending the H2CData. With the change, we send a single CapsuleCmd PDU that includes the data. This reduces the number of bytes (and likely packets) sent across the network, and simplifies the send state machine handling in the driver. Signed-off-by:
Caleb Sander <csander@purestorage.com> Signed-off-by:
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Israel Rukshin authored
In case many controllers start error recovery at the same time (i.e., when port is down and up), they may never succeed to reconnect again. This is because the target can't handle all the connect requests at three seconds (the arbitrary value set today). Even if some of the connections are established, when a single queue fails to connect, all the controller's queues are destroyed as well. So, on the following reconnection attempts the number of connect requests may remain the same. To fix this, remove the timeout and wait for RDMA-CM event to abort/complete the connect request. RDMA-CM sends unreachable event when a timeout of ~90 seconds is expired. This approach is used at other RDMA-CM users like SRP and iSER at blocking mode. The commit also renames NVME_RDMA_CONNECT_TIMEOUT_MS to NVME_RDMA_CM_TIMEOUT_MS. Signed-off-by:
Israel Rukshin <israelr@nvidia.com> Reviewed-by:
Max Gurtovoy <mgurtovoy@nvidia.com> Acked-by:
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Vincent Fu authored
Allow setting via configfs these two options: no_sched shared_tag_bitmap Previously these could only be activated as module parameters. Still missing are: shared_tags timeout requeue init_hctx Signed-off-by:
Vincent Fu <vincent.fu@samsung.com> Reviewed-by:
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Vincent Fu authored
Add as module parameters these options: memory_backed discard mbps cache_size Previously these could only be set via configfs. Still missing is bad_blocks. The kernel test robot found a documentation formatting issue in v1 of this patch. Reported-by:
kernel test robot <lkp@intel.com> Signed-off-by:
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Md Haris Iqbal authored
The structure rnbd_srv_session maintains a list and an xarray of rnbd_srv_dev. There is no need to keep both as one of them can serve the purpose. Since one of the places where the lookup of rnbd_srv_dev using rnbd_srv_session is IO path, an xarray would serve us better than a list traversal. Hence remove sess_dev_list from rnbd_srv_session, and replace its uses from xarray. Signed-off-by:
Md Haris Iqbal <haris.iqbal@ionos.com> Reviewed-by:
Aleksei Marov <aleksei.marov@ionos.com> Signed-off-by:
Jack Wang <jinpu.wang@ionos.com> Link: https://lore.kernel.org/r/20220707143122.460362-3-haris.iqbal@ionos.comSigned-off-by:
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Md Haris Iqbal authored
After setting keep_id if the mutex trylock fails, the keep_id stays set for the rest of the sess_dev lifetime. Therefore, set keep_id to true after mutex_trylock succeeds, so that a failure of trylock does'nt touch keep_id. Fixes: b168e1d8 ("block/rnbd-srv: Prevent a deadlock generated by accessing sysfs in parallel") Cc: gi-oh.kim@ionos.com Signed-off-by:
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Hannes Reinecke authored
Each authentication step is required to be completed within the KATO interval (or two minutes if not set). So add a workqueue function to reset the transaction ID and the expected next protocol step; this will automatically the next authentication command referring to the terminated authentication. Signed-off-by:
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Hannes Reinecke authored
Implement Diffie-Hellman key exchange using FFDHE groups for NVMe In-Band Authentication. This patch adds a new host configfs attribute 'dhchap_dhgroup' to select the FFDHE group to use. Signed-off-by:
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Hannes Reinecke authored
Implement NVMe-oF In-Band authentication according to NVMe TPAR 8006. This patch adds three additional configfs entries 'dhchap_key', 'dhchap_ctrl_key', and 'dhchap_hash' to the 'host' configfs directory. The 'dhchap_key' and 'dhchap_ctrl_key' entries need to be in the ASCII format as specified in NVMe Base Specification v2.0 section 8.13.5.8 'Secret representation'. 'dhchap_hash' defaults to 'hmac(sha256)', and can be written to to switch to a different HMAC algorithm. Signed-off-by:
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Hannes Reinecke authored
Some fabrics commands can be sent via io queues, so add a new function nvmet_parse_fabrics_io_cmd() and rename the existing nvmet_parse_fabrics_cmd() to nvmet_parse_fabrics_admin_cmd(). Signed-off-by:
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Hannes Reinecke authored
Implement Diffie-Hellman key exchange using FFDHE groups for NVMe In-Band Authentication. Signed-off-by:
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Hannes Reinecke authored
Implement NVMe-oF In-Band authentication according to NVMe TPAR 8006. This patch adds two new fabric options 'dhchap_secret' to specify the pre-shared key (in ASCII respresentation according to NVMe 2.0 section 8.13.5.8 'Secret representation') and 'dhchap_ctrl_secret' to specify the pre-shared controller key for bi-directional authentication of both the host and the controller. Re-authentication can be triggered by writing the PSK into the new controller sysfs attribute 'dhchap_secret' or 'dhchap_ctrl_secret'. Signed-off-by:
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Hannes Reinecke authored
The 'connect' command might fail with NVME_SC_AUTH_REQUIRED, so we should be decoding this error, too. Signed-off-by:
Chaitanya Kulkarni <kch@nvidia.com> Reviewed-by:
Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by:
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Hannes Reinecke authored
Add new definitions for NVMe In-band authentication as defined in the NVMe Base Specification v2.0. Signed-off-by:
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Hannes Reinecke authored
Add RFC4648-compliant base64 encoding and decoding routines, based on the base64url encoding in fs/crypto/fname.c. Signed-off-by:
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Hannes Reinecke authored
Add helper function to determine if a given key-agreement protocol primitive is supported. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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Hannes Reinecke authored
Add helper function to determine if a given synchronous hash is supported. Signed-off-by:
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Sagi Grimberg authored
A helper now exist, no need to open-code the same functionality. Signed-off-by:
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Chaitanya Kulkarni authored
Only caller of the __nvme_submit_sync_cmd() with qid value not equal to NVME_QID_ANY is nvmf_connect_io_queues(), where qid value is alway set to > 0. [1] __nvme_submit_sync_cmd() callers with qid parameter from :- Caller | qid parameter ------------------------------------------------------ * nvme_fc_connect_io_queues() | nvmf_connect_io_queue() | qid > 0 * nvme_rdma_start_io_queues() | nvme_rdma_start_queue() | nvmf_connect_io_queues() | qid > 0 * nvme_tcp_start_io_queues() | nvme_tcp_start_queue() | nvmf_connect_io_queues() | qid > 0 * nvme_loop_connect_io_queues() | nvmf_connect_io_queues() | qid > 0 When qid value of the function parameter __nvme_submit_sync_cmd() is > 0 from above callers, we use blk_mq_alloc_request_hctx(), where we pass last parameter as 0 if qid functional parameter value is set to 0 with conditional operators, see 1002 :- 991 int __nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd, 992 union nvme_result *result, void *buffer, unsigned bufflen, 993 int qid, int at_head, blk_mq_req_flags_t flags) 994 { 995 struct request *req; 996 int ret; 997 998 if (qid == NVME_QID_ANY) 999 req = blk_mq_alloc_request(q, nvme_req_op(cmd), flags); 1000 else 1001 req = blk_mq_alloc_request_hctx(q, nvme_req_op(cmd), flags, 1002 qid ? qid - 1 : 0); 1003 But qid function parameter value of the __nvme_submit_sync_cmd() will never be 0 from above caller list see [1], and all the other callers of __nvme_submit_sync_cmd() use NVME_QID_ANY as qid value :- 1. nvme_submit_sync_cmd() 2. nvme_features() 3. nvme_sec_submit() 4. nvmf_reg_read32() 5. nvmf_reg_read64() 6. nvmf_ref_write32() 7. nvmf_connect_admin_queue() Remove the conditional operator to pass the qid as 0 in the call to blk_mq_alloc_requst_hctx(). Signed-off-by: -
Chaitanya Kulkarni authored
The function __nvme_submit_sync_cmd() has following list of callers that sets the timeout value to 0 :- Callers | Timeout value ------------------------------------------------ nvme_submit_sync_cmd() | 0 nvme_features() | 0 nvme_sec_submit() | 0 nvmf_reg_read32() | 0 nvmf_reg_read64() | 0 nvmf_reg_write32() | 0 nvmf_connect_admin_queue() | 0 nvmf_connect_io_queue() | 0 Remove the timeout function parameter from __nvme_submit_sync_cmd() and adjust the rest of code accordingly. Signed-off-by: -
Michael Kelley authored
In the NVM Express Revision 1.4 spec, Figure 145 describes possible values for an AER with event type "Error" (value 000b). For a Persistent Internal Error (value 03h), the host should perform a controller reset. Add support for this error using code that already exists for doing a controller reset. As part of this support, introduce two utility functions for parsing the AER type and subtype. This new support was tested in a lab environment where we can generate the persistent internal error on demand, and observe both the Linux side and NVMe controller side to see that the controller reset has been done. Signed-off-by:
Michael Kelley <mikelley@microsoft.com> Signed-off-by:
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Xiang wangx authored
Delete the redundant word 'be'. Signed-off-by:
Xiang wangx <wangxiang@cdjrlc.com> Signed-off-by:
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Guoqing Jiang authored
No need to checking the return value, make it return void. Acked-by:
Guoqing Jiang <guoqing.jiang@linux.dev> Link: https://lore.kernel.org/r/20220706133152.12058-9-guoqing.jiang@linux.devSigned-off-by:
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Guoqing Jiang authored
Let's change the parameter type to 'sector_t' then we don't need to cast it from rnbd_clt_resize_dev_store, and update rnbd_clt_resize_disk too. Acked-by:
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