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nvmet: add support to Discovery controllers for commands 

Add custom get/set features to commands allowed by Discovery controllers.

Signed-off-by: Jay Sternberg <jay.e.sternberg@intel.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jay Sternberg 2018-11-12 13:56:38 -08:00 committed by Jens Axboe
parent f301c2b136
commit 6a8ec0ac5e
1 changed files with 53 additions and 0 deletions
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53
drivers/nvme/target/discovery.c
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@ -183,6 +183,47 @@ static void nvmet_execute_identify_disc_ctrl(struct nvmet_req *req)
nvmet_req_complete(req, status);
}
static void nvmet_execute_disc_set_features(struct nvmet_req *req)
{
u32 cdw10 = le32_to_cpu(req->cmd->common.cdw10[0]);
u16 stat;
switch (cdw10 & 0xff) {
case NVME_FEAT_KATO:
stat = nvmet_set_feat_kato(req);
break;
case NVME_FEAT_ASYNC_EVENT:
stat = nvmet_set_feat_async_event(req,
NVMET_DISC_AEN_CFG_OPTIONAL);
break;
default:
stat = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
break;
}
nvmet_req_complete(req, stat);
}
static void nvmet_execute_disc_get_features(struct nvmet_req *req)
{
u32 cdw10 = le32_to_cpu(req->cmd->common.cdw10[0]);
u16 stat = 0;
switch (cdw10 & 0xff) {
case NVME_FEAT_KATO:
nvmet_get_feat_kato(req);
break;
case NVME_FEAT_ASYNC_EVENT:
nvmet_get_feat_async_event(req);
break;
default:
stat = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
break;
}
nvmet_req_complete(req, stat);
}
u16 nvmet_parse_discovery_cmd(struct nvmet_req *req)
{
struct nvme_command *cmd = req->cmd;
@ -194,6 +235,18 @@ u16 nvmet_parse_discovery_cmd(struct nvmet_req *req)
}
switch (cmd->common.opcode) {
case nvme_admin_set_features:
req->execute = nvmet_execute_disc_set_features;
req->data_len = 0;
return 0;
case nvme_admin_get_features:
req->execute = nvmet_execute_disc_get_features;
req->data_len = 0;
return 0;
case nvme_admin_async_event:
req->execute = nvmet_execute_async_event;
req->data_len = 0;
return 0;
case nvme_admin_keep_alive:
req->execute = nvmet_execute_keep_alive;
req->data_len = 0;