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nvme-fcloop: refactor to enable target to host LS 

Currently nvmefc-loop only sends LS's from host to target.
Slightly rework data structures and routine names to reflect this
path. Allows a straight-forward conversion to be used by ls's
from target to host.

Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
James Smart 2020-03-31 09:50:00 -07:00 committed by Jens Axboe
parent 47bf324106
commit ea39765843
1 changed files with 13 additions and 6 deletions
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19
drivers/nvme/target/fcloop.c
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@ -226,9 +226,15 @@ struct fcloop_nport {
u32 port_id;
};
enum {
H2T = 0,
T2H = 1,
};
struct fcloop_lsreq {
struct nvmefc_ls_req *lsreq;
struct nvmefc_ls_rsp ls_rsp;
int lsdir; /* H2T or T2H */
int status;
struct list_head ls_list; /* fcloop_rport->ls_list */
};
@ -323,7 +329,7 @@ fcloop_rport_lsrqst_work(struct work_struct *work)
}
static int
fcloop_ls_req(struct nvme_fc_local_port *localport,
fcloop_h2t_ls_req(struct nvme_fc_local_port *localport,
struct nvme_fc_remote_port *remoteport,
struct nvmefc_ls_req *lsreq)
{
@ -331,6 +337,7 @@ fcloop_ls_req(struct nvme_fc_local_port *localport,
struct fcloop_rport *rport = remoteport->private;
int ret = 0;
tls_req->lsdir = H2T;
tls_req->lsreq = lsreq;
INIT_LIST_HEAD(&tls_req->ls_list);
@ -351,7 +358,7 @@ fcloop_ls_req(struct nvme_fc_local_port *localport,
}
static int
fcloop_xmt_ls_rsp(struct nvmet_fc_target_port *targetport,
fcloop_h2t_xmt_ls_rsp(struct nvmet_fc_target_port *targetport,
struct nvmefc_ls_rsp *lsrsp)
{
struct fcloop_lsreq *tls_req = ls_rsp_to_lsreq(lsrsp);
@ -762,7 +769,7 @@ fcloop_fcp_req_release(struct nvmet_fc_target_port *tgtport,
}
static void
fcloop_ls_abort(struct nvme_fc_local_port *localport,
fcloop_h2t_ls_abort(struct nvme_fc_local_port *localport,
struct nvme_fc_remote_port *remoteport,
struct nvmefc_ls_req *lsreq)
{
@ -879,9 +886,9 @@ static struct nvme_fc_port_template fctemplate = {
.remoteport_delete = fcloop_remoteport_delete,
.create_queue = fcloop_create_queue,
.delete_queue = fcloop_delete_queue,
.ls_req = fcloop_ls_req,
.ls_req = fcloop_h2t_ls_req,
.fcp_io = fcloop_fcp_req,
.ls_abort = fcloop_ls_abort,
.ls_abort = fcloop_h2t_ls_abort,
.fcp_abort = fcloop_fcp_abort,
.max_hw_queues = FCLOOP_HW_QUEUES,
.max_sgl_segments = FCLOOP_SGL_SEGS,
@ -896,7 +903,7 @@ static struct nvme_fc_port_template fctemplate = {
static struct nvmet_fc_target_template tgttemplate = {
.targetport_delete = fcloop_targetport_delete,
.xmt_ls_rsp = fcloop_xmt_ls_rsp,
.xmt_ls_rsp = fcloop_h2t_xmt_ls_rsp,
.fcp_op = fcloop_fcp_op,
.fcp_abort = fcloop_tgt_fcp_abort,
.fcp_req_release = fcloop_fcp_req_release,