diff options
author | Christoph Hellwig <hch@lst.de> | 2018-06-11 17:41:11 +0200 |
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committer | Christoph Hellwig <hch@lst.de> | 2018-06-15 11:21:00 +0200 |
commit | 35897b920c8ab5e23331ad429e0aa235528c63ba (patch) | |
tree | c5197fa28e89654982bdd5b1ef385f1dc2c718e8 /drivers/nvme | |
parent | 278ab3799a2588f97423180947f09ec5b576e79e (diff) | |
download | op-kernel-dev-35897b920c8ab5e23331ad429e0aa235528c63ba.zip op-kernel-dev-35897b920c8ab5e23331ad429e0aa235528c63ba.tar.gz |
nvme-fabrics: fix and refine state checks in __nvmf_check_ready
- make sure we only allow internally generates commands in any non-live
state
- only allow connect commands on non-live queues when actually in the
new or connecting states
- treat all other non-live, non-dead states the same as a default
cach-all
This fixes a regression where we could not shutdown a controller
orderly as we didn't allow the internal generated Property Set
command, and also ensures we don't accidentally let a Connect command
through in the wrong state.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: James Smart <james.smart@broadcom.com>
Diffstat (limited to 'drivers/nvme')
-rw-r--r-- | drivers/nvme/host/fabrics.c | 39 |
1 files changed, 19 insertions, 20 deletions
diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c index 6b4e253..903eb45 100644 --- a/drivers/nvme/host/fabrics.c +++ b/drivers/nvme/host/fabrics.c @@ -556,34 +556,33 @@ EXPORT_SYMBOL_GPL(nvmf_fail_nonready_command); bool __nvmf_check_ready(struct nvme_ctrl *ctrl, struct request *rq, bool queue_live) { - struct nvme_command *cmd = nvme_req(rq)->cmd; + struct nvme_request *req = nvme_req(rq); + /* + * If we are in some state of setup or teardown only allow + * internally generated commands. + */ + if (!blk_rq_is_passthrough(rq) || (req->flags & NVME_REQ_USERCMD)) + return false; + + /* + * Only allow commands on a live queue, except for the connect command, + * which is require to set the queue live in the appropinquate states. + */ switch (ctrl->state) { case NVME_CTRL_NEW: case NVME_CTRL_CONNECTING: - case NVME_CTRL_DELETING: - /* - * If queue is live, allow only commands that are internally - * generated pass through. These are commands on the admin - * queue to initialize the controller. This will reject any - * ioctl admin cmds received while initializing. - */ - if (queue_live && !(nvme_req(rq)->flags & NVME_REQ_USERCMD)) + if (req->cmd->common.opcode == nvme_fabrics_command && + req->cmd->fabrics.fctype == nvme_fabrics_type_connect) return true; - - /* - * If the queue is not live, allow only a connect command. This - * will reject any ioctl admin cmd as well as initialization - * commands if the controller reverted the queue to non-live. - */ - if (!queue_live && blk_rq_is_passthrough(rq) && - cmd->common.opcode == nvme_fabrics_command && - cmd->fabrics.fctype == nvme_fabrics_type_connect) - return true; - return false; + break; default: + break; + case NVME_CTRL_DEAD: return false; } + + return queue_live; } EXPORT_SYMBOL_GPL(__nvmf_check_ready); |