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nvmet: Cleanup discovery execute handlers 

Push the lid and cns check into their respective handlers and, while
we're at it, rename the functions to be consistent with other
discovery handlers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
[split patch, update changelog]
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2019-10-23 10:35:42 -06:00 committed by Jens Axboe
parent 2cb6963a16
commit 6f86f2c9d9
1 changed files with 19 additions and 25 deletions
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44
drivers/nvme/target/discovery.c
View File

@ -157,7 +157,7 @@ static size_t discovery_log_entries(struct nvmet_req *req)
return entries;
}
static void nvmet_execute_get_disc_log_page(struct nvmet_req *req)
static void nvmet_execute_disc_get_log_page(struct nvmet_req *req)
{
const int entry_size = sizeof(struct nvmf_disc_rsp_page_entry);
struct nvmet_ctrl *ctrl = req->sq->ctrl;
@ -171,6 +171,13 @@ static void nvmet_execute_get_disc_log_page(struct nvmet_req *req)
u16 status = 0;
void *buffer;
if (req->cmd->get_log_page.lid != NVME_LOG_DISC) {
req->error_loc =
offsetof(struct nvme_get_log_page_command, lid);
status = NVME_SC_INVALID_OPCODE | NVME_SC_DNR;
goto out;
}
/* Spec requires dword aligned offsets */
if (offset & 0x3) {
status = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
@ -227,12 +234,18 @@ out:
nvmet_req_complete(req, status);
}
static void nvmet_execute_identify_disc_ctrl(struct nvmet_req *req)
static void nvmet_execute_disc_identify(struct nvmet_req *req)
{
struct nvmet_ctrl *ctrl = req->sq->ctrl;
struct nvme_id_ctrl *id;
u16 status = 0;
if (req->cmd->identify.cns != NVME_ID_CNS_CTRL) {
req->error_loc = offsetof(struct nvme_identify, cns);
status = NVME_SC_INVALID_OPCODE | NVME_SC_DNR;
goto out;
}
id = kzalloc(sizeof(*id), GFP_KERNEL);
if (!id) {
status = NVME_SC_INTERNAL;
@ -344,31 +357,12 @@ u16 nvmet_parse_discovery_cmd(struct nvmet_req *req)
return 0;
case nvme_admin_get_log_page:
req->data_len = nvmet_get_log_page_len(cmd);
switch (cmd->get_log_page.lid) {
case NVME_LOG_DISC:
req->execute = nvmet_execute_get_disc_log_page;
return 0;
default:
pr_err("unsupported get_log_page lid %d\n",
cmd->get_log_page.lid);
req->error_loc =
offsetof(struct nvme_get_log_page_command, lid);
return NVME_SC_INVALID_OPCODE | NVME_SC_DNR;
}
req->execute = nvmet_execute_disc_get_log_page;
return 0;
case nvme_admin_identify:
req->data_len = NVME_IDENTIFY_DATA_SIZE;
switch (cmd->identify.cns) {
case NVME_ID_CNS_CTRL:
req->execute =
nvmet_execute_identify_disc_ctrl;
return 0;
default:
pr_err("unsupported identify cns %d\n",
cmd->identify.cns);
req->error_loc = offsetof(struct nvme_identify, cns);
return NVME_SC_INVALID_OPCODE | NVME_SC_DNR;
}
req->execute = nvmet_execute_disc_identify;
return 0;
default:
pr_err("unhandled cmd %d\n", cmd->common.opcode);
req->error_loc = offsetof(struct nvme_common_command, opcode);