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nvme: introduce nvme_is_fabrics to check fabrics cmd

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This patch introduces a nvme_is_fabrics() inline function to check
whether or not the given command structure is for fabrics.

Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Minwoo Im 2019-06-06 14:30:14 +09:00 committed by Christoph Hellwig
parent 1a87ee657c
commit 7a1f46e3f7
5 changed files with 10 additions and 5 deletions
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2
drivers/nvme/host/fabrics.c
View file

@ -578,7 +578,7 @@ bool __nvmf_check_ready(struct nvme_ctrl *ctrl, struct request *rq,
switch (ctrl->state) {
case NVME_CTRL_NEW:
case NVME_CTRL_CONNECTING:
if (req->cmd->common.opcode == nvme_fabrics_command &&
if (nvme_is_fabrics(req->cmd) &&
req->cmd->fabrics.fctype == nvme_fabrics_type_connect)
return true;
break;

2
drivers/nvme/target/core.c
View file

@ -873,7 +873,7 @@ bool nvmet_req_init(struct nvmet_req *req, struct nvmet_cq *cq,
status = nvmet_parse_connect_cmd(req);
else if (likely(req->sq->qid != 0))
status = nvmet_parse_io_cmd(req);
else if (req->cmd->common.opcode == nvme_fabrics_command)
else if (nvme_is_fabrics(req->cmd))
status = nvmet_parse_fabrics_cmd(req);
else if (req->sq->ctrl->subsys->type == NVME_NQN_DISC)
status = nvmet_parse_discovery_cmd(req);

2
drivers/nvme/target/fabrics-cmd.c
View file

@ -268,7 +268,7 @@ u16 nvmet_parse_connect_cmd(struct nvmet_req *req)
{
struct nvme_command *cmd = req->cmd;
if (cmd->common.opcode != nvme_fabrics_command) {
if (!nvme_is_fabrics(cmd)) {
pr_err("invalid command 0x%x on unconnected queue.\n",
cmd->fabrics.opcode);
req->error_loc = offsetof(struct nvme_common_command, opcode);

2
drivers/nvme/target/fc.c
View file

@ -1806,7 +1806,7 @@ nvmet_fc_prep_fcp_rsp(struct nvmet_fc_tgtport *tgtport,
*/
rspcnt = atomic_inc_return(&fod->queue->zrspcnt);
if (!(rspcnt % fod->queue->ersp_ratio) ||
sqe->opcode == nvme_fabrics_command ||
nvme_is_fabrics((struct nvme_command *) sqe) ||
xfr_length != fod->req.transfer_len ||
(le16_to_cpu(cqe->status) & 0xFFFE) || cqewd[0] || cqewd[1] ||
(sqe->flags & (NVME_CMD_FUSE_FIRST | NVME_CMD_FUSE_SECOND)) ||

7
include/linux/nvme.h
View file

@ -1165,6 +1165,11 @@ struct nvme_command {
};
};
static inline bool nvme_is_fabrics(struct nvme_command *cmd)
{
return cmd->common.opcode == nvme_fabrics_command;
}
struct nvme_error_slot {
__le64 error_count;
__le16 sqid;
@ -1186,7 +1191,7 @@ static inline bool nvme_is_write(struct nvme_command *cmd)
*
* Why can't we simply have a Fabrics In and Fabrics out command?
*/
if (unlikely(cmd->common.opcode == nvme_fabrics_command))
if (unlikely(nvme_is_fabrics(cmd)))
return cmd->fabrics.fctype & 1;
return cmd->common.opcode & 1;
}