lpfc: Refactor nvmet_rcv_ctx to create lpfc_async_xchg_ctx

To support FC-NVME-2 support (actually FC-NVME (rev 1) with Ammendment 1),
both the nvme (host) and nvmet (controller/target) sides will need to be
able to receive LS requests.  Currently, this support is in the nvmet side
only. To prepare for both sides supporting LS receive, rename
lpfc_nvmet_rcv_ctx to lpfc_async_xchg_ctx and commonize the definition.
Signed-off-by: Paul Ely <paul.ely@broadcom.com>
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>

drivers/scsi/lpfc/lpfc.h

@@ -143,7 +143,7 @@ struct lpfc_dmabuf {
 
 struct lpfc_nvmet_ctxbuf {
 	struct list_head list;
-	struct lpfc_nvmet_rcv_ctx *context;
+	struct lpfc_async_xchg_ctx *context;
 	struct lpfc_iocbq *iocbq;
 	struct lpfc_sglq *sglq;
 	struct work_struct defer_work;

drivers/scsi/lpfc/lpfc_crtn.h

@@ -24,7 +24,6 @@ typedef int (*node_filter)(struct lpfc_nodelist *, void *);
 
 struct fc_rport;
 struct fc_frame_header;
-struct lpfc_nvmet_rcv_ctx;
 void lpfc_down_link(struct lpfc_hba *, LPFC_MBOXQ_t *);
 void lpfc_sli_read_link_ste(struct lpfc_hba *);
 void lpfc_dump_mem(struct lpfc_hba *, LPFC_MBOXQ_t *, uint16_t, uint16_t);

drivers/scsi/lpfc/lpfc_debugfs.c

@@ -1032,7 +1032,7 @@ lpfc_debugfs_nvmestat_data(struct lpfc_vport *vport, char *buf, int size)
 {
 	struct lpfc_hba   *phba = vport->phba;
 	struct lpfc_nvmet_tgtport *tgtp;
-	struct lpfc_nvmet_rcv_ctx *ctxp, *next_ctxp;
+	struct lpfc_async_xchg_ctx *ctxp, *next_ctxp;
 	struct nvme_fc_local_port *localport;
 	struct lpfc_fc4_ctrl_stat *cstat;
 	struct lpfc_nvme_lport *lport;

drivers/scsi/lpfc/lpfc_init.c

@@ -1029,7 +1029,7 @@ static int
 lpfc_hba_down_post_s4(struct lpfc_hba *phba)
 {
 	struct lpfc_io_buf *psb, *psb_next;
-	struct lpfc_nvmet_rcv_ctx *ctxp, *ctxp_next;
+	struct lpfc_async_xchg_ctx *ctxp, *ctxp_next;
 	struct lpfc_sli4_hdw_queue *qp;
 	LIST_HEAD(aborts);
 	LIST_HEAD(nvme_aborts);

drivers/scsi/lpfc/lpfc_nvme.h

@@ -162,13 +162,14 @@ struct lpfc_nvmet_ctx_info {
 #define lpfc_get_ctx_list(phba, cpu, mrq)  \
 	(phba->sli4_hba.nvmet_ctx_info + ((cpu * phba->cfg_nvmet_mrq) + mrq))
 
-struct lpfc_nvmet_rcv_ctx {
+struct lpfc_async_xchg_ctx {
 	union {
-		struct nvmefc_ls_rsp ls_rsp;
 		struct nvmefc_tgt_fcp_req fcp_req;
-	} ctx;
+	} hdlrctx;
 	struct list_head list;
 	struct lpfc_hba *phba;
+	struct nvmefc_ls_req *ls_req;
+	struct nvmefc_ls_rsp ls_rsp;
 	struct lpfc_iocbq *wqeq;
 	struct lpfc_iocbq *abort_wqeq;
 	spinlock_t ctxlock; /* protect flag access */

drivers/scsi/lpfc/lpfc_sli.c

@@ -19888,7 +19888,7 @@ lpfc_sli4_issue_wqe(struct lpfc_hba *phba, struct lpfc_sli4_hdw_queue *qp,
 		    struct lpfc_iocbq *pwqe)
 {
 	union lpfc_wqe128 *wqe = &pwqe->wqe;
-	struct lpfc_nvmet_rcv_ctx *ctxp;
+	struct lpfc_async_xchg_ctx *ctxp;
 	struct lpfc_queue *wq;
 	struct lpfc_sglq *sglq;
 	struct lpfc_sli_ring *pring;