Commit 875386b9 authored Aug 21, 2023 by Manish Rangankar Committed by Martin K. Petersen Aug 21, 2023

scsi: qla2xxx: Add Unsolicited LS Request and Response Support for NVMe

Introduce infrastructure in the driver to support the processing of
unsolicited LS (Link Service) requests. This will involve the utilization
of a new pass-up of unsolicited FC-NVMe request IOCB interface. Unsolicited
requests will be submitted to the NVMe transport layer through
nvme_fc_rcv_ls_req(). Any received LS responses, which are sent using
xmt_ls_rsp(), will be forwarded to the firmware through the existing
Pass-Through IOCB interface, responsible for sending FC-NVMe Link Service
requests and responses.

Signed-off-by: Manish Rangankar <mrangankar@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Link: https://lore.kernel.org/r/20230821130045.34850-2-njavali@marvell.com

Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

parent ae25f65a

drivers/scsi/qla2xxx/qla_dbg.c

+2 −3

Original line number	Diff line number	Diff line
		@@ -12,9 +12,8 @@
		* ----------------------------------------------------------------------
		* \| Module Init and Probe \| 0x0199 \| \|
		* \| Mailbox commands \| 0x1206 \| 0x11a5-0x11ff \|
		* \| Device Discovery \| 0x2134 \| 0x210e-0x2115 \|
		* \| \| \| 0x211c-0x2128 \|
		* \| \| \| 0x212c-0x2134 \|
		* \| Device Discovery \| 0x2134 \| 0x2112-0x2115 \|
		* \| \| \| 0x2127-0x2128 \|
		* \| Queue Command and IO tracing \| 0x3074 \| 0x300b \|
		* \| \| \| 0x3027-0x3028 \|
		* \| \| \| 0x303d-0x3041 \|

drivers/scsi/qla2xxx/qla_dbg.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -368,6 +368,7 @@ ql_log_qp(uint32_t, struct qla_qpair , int32_t, const char fmt, ...);
		#define ql_dbg_tgt_tmr 0x00001000 /* Target mode task management */
		#define ql_dbg_tgt_dif 0x00000800 /* Target mode dif */
		#define ql_dbg_edif 0x00000400 /* edif and purex debug */
		#define ql_dbg_unsol 0x00000100 /* Unsolicited path debug */

		extern int qla27xx_dump_mpi_ram(struct qla_hw_data , uint32_t, uint32_t ,
		uint32_t, void **);

drivers/scsi/qla2xxx/qla_def.h

+32 −2

Original line number	Diff line number	Diff line
		@@ -346,6 +346,12 @@ struct name_list_extended {
		u8 sent;
		};

		struct qla_nvme_fc_rjt {
		struct fcnvme_ls_rjt *c;
		dma_addr_t cdma;
		u16 size;
		};

		struct els_reject {
		struct fc_els_ls_rjt *c;
		dma_addr_t cdma;
		@@ -503,6 +509,20 @@ struct ct_arg {
		port_id_t id;
		};

		struct qla_nvme_lsrjt_pt_arg {
		struct fc_port *fcport;
		u8 opcode;
		u8 vp_idx;
		u8 reason;
		u8 explanation;
		__le16 nport_handle;
		u16 control_flags;
		__le16 ox_id;
		__le32 xchg_address;
		u32 tx_byte_count, rx_byte_count;
		dma_addr_t tx_addr, rx_addr;
		};

		/*
		* SRB extensions.
		*/
		@@ -611,13 +631,16 @@ struct srb_iocb {
		void *desc;

		/* These are only used with ls4 requests */
		int cmd_len;
		int rsp_len;
		__le32 cmd_len;
		__le32 rsp_len;
		dma_addr_t cmd_dma;
		dma_addr_t rsp_dma;
		enum nvmefc_fcp_datadir dir;
		uint32_t dl;
		uint32_t timeout_sec;
		__le32 exchange_address;
		__le16 nport_handle;
		__le16 ox_id;
		struct list_head entry;
		} nvme;
		struct {
		@@ -707,6 +730,10 @@ typedef struct srb {
		struct fc_port *fcport;
		struct scsi_qla_host *vha;
		unsigned int start_timer:1;
		unsigned int abort:1;
		unsigned int aborted:1;
		unsigned int completed:1;
		unsigned int unsol_rsp:1;

		uint32_t handle;
		uint16_t flags;
		@@ -2542,6 +2569,7 @@ enum rscn_addr_format {
		typedef struct fc_port {
		struct list_head list;
		struct scsi_qla_host *vha;
		struct list_head unsol_ctx_head;

		unsigned int conf_compl_supported:1;
		unsigned int deleted:2;
		@@ -4802,6 +4830,7 @@ struct qla_hw_data {
		struct els_reject elsrej;
		u8 edif_post_stop_cnt_down;
		struct qla_vp_map *vp_map;
		struct qla_nvme_fc_rjt lsrjt;
		};

		#define RX_ELS_SIZE (roundup(sizeof(struct enode) + ELS_MAX_PAYLOAD, SMP_CACHE_BYTES))
		@@ -4834,6 +4863,7 @@ struct active_regions {
		* is variable) starting at "iocb".
		*/
		struct purex_item {
		void *purls_context;
		struct list_head list;
		struct scsi_qla_host *vha;
		void (process_item)(struct scsi_qla_host vha,

drivers/scsi/qla2xxx/qla_gbl.h

+10 −4

Original line number	Diff line number	Diff line
		@@ -611,7 +611,11 @@ qla2xxx_msix_rsp_q_hs(int irq, void *dev_id);
		fc_port_t qla2x00_find_fcport_by_loopid(scsi_qla_host_t , uint16_t);
		fc_port_t qla2x00_find_fcport_by_wwpn(scsi_qla_host_t , u8 *, u8);
		fc_port_t qla2x00_find_fcport_by_nportid(scsi_qla_host_t , port_id_t *, u8);
		void __qla_consume_iocb(struct scsi_qla_host vha, void pkt, struct rsp_que *rsp);
		void qla24xx_queue_purex_item(scsi_qla_host_t , struct purex_item ,
		void (process_item)(struct scsi_qla_host ,
		struct purex_item *));
		void __qla_consume_iocb(struct scsi_qla_host , void , struct rsp_que *);
		void qla2xxx_process_purls_iocb(void pkt, struct rsp_que rsp);

		/*
		* Global Function Prototypes in qla_sup.c source file.
		@@ -674,9 +678,11 @@ extern int qla2xxx_get_vpd_field(scsi_qla_host_t , char , char *, size_t);
		extern void qla2xxx_flash_npiv_conf(scsi_qla_host_t *);
		extern int qla24xx_read_fcp_prio_cfg(scsi_qla_host_t *);
		extern int qla2x00_mailbox_passthru(struct bsg_job *bsg_job);
		int __qla_copy_purex_to_buffer(struct scsi_qla_host vha, void *pkt,
		struct rsp_que *rsp, u8 buf, u32 buf_len);

		int qla2x00_sys_ld_info(struct bsg_job *bsg_job);
		int __qla_copy_purex_to_buffer(struct scsi_qla_host , void *,
		struct rsp_que *, u8 , u32);
		struct purex_item qla27xx_copy_multiple_pkt(struct scsi_qla_host vha,
		void pkt, struct rsp_que rsp, bool is_purls, bool byte_order);
		int qla_mailbox_passthru(scsi_qla_host_t vha, uint16_t mbx_in,
		uint16_t *mbx_out);

drivers/scsi/qla2xxx/qla_init.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -5554,6 +5554,7 @@ qla2x00_alloc_fcport(scsi_qla_host_t *vha, gfp_t flags)
		INIT_WORK(&fcport->reg_work, qla_register_fcport_fn);
		INIT_LIST_HEAD(&fcport->gnl_entry);
		INIT_LIST_HEAD(&fcport->list);
		INIT_LIST_HEAD(&fcport->unsol_ctx_head);

		INIT_LIST_HEAD(&fcport->sess_cmd_list);
		spin_lock_init(&fcport->sess_cmd_lock);