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scsi: qla2xxx: Changes to support N2N logins

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If we discovered a topology that is N2N then we will issue a login to
the target. If our WWPN is bigger than the target's WWPN then we will
initiate login, otherwise we will just wait for the target to initiate
login.

[mkp: many whitespace errors]

Signed-off-by: Duane Grigsby <duane.grigsby@cavium.com>
Signed-off-by: Michael Hernandez <michael.hernandez@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Tested-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Duane Grigsby
2017-10-13 09:34:06 -07:00
committed by Martin K. Petersen
parent c0c462c8a0
commit edd05de197
7 changed files with 459 additions and 21 deletions
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24
drivers/scsi/qla2xxx/qla_def.h
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@@ -323,6 +323,12 @@ struct els_logo_payload {
uint8_t wwpn[WWN_SIZE];
};
struct els_plogi_payload {
uint8_t opcode;
uint8_t rsvd[3];
uint8_t data[112];
};
struct ct_arg {
void *iocb;
u16 nport_handle;
@@ -358,6 +364,19 @@ struct srb_iocb {
dma_addr_t els_logo_pyld_dma;
} els_logo;
struct {
#define ELS_DCMD_PLOGI 0x3
uint32_t flags;
uint32_t els_cmd;
struct completion comp;
struct els_plogi_payload *els_plogi_pyld;
struct els_plogi_payload *els_resp_pyld;
dma_addr_t els_plogi_pyld_dma;
dma_addr_t els_resp_pyld_dma;
uint32_t fw_status[3];
__le16 comp_status;
__le16 len;
} els_plogi;
struct {
/*
* Values for flags field below are as
* defined in tsk_mgmt_entry struct
@@ -2349,6 +2368,7 @@ typedef struct fc_port {
uint8_t fc4_type;
uint8_t fc4f_nvme;
uint8_t scan_state;
uint8_t n2n_flag;
unsigned long last_queue_full;
unsigned long last_ramp_up;
@@ -2372,6 +2392,7 @@ typedef struct fc_port {
u8 iocb[IOCB_SIZE];
u8 current_login_state;
u8 last_login_state;
struct completion n2n_done;
} fc_port_t;
#define QLA_FCPORT_SCAN 1
@@ -4228,6 +4249,9 @@ typedef struct scsi_qla_host {
wait_queue_head_t fcport_waitQ;
wait_queue_head_t vref_waitq;
uint8_t min_link_speed_feat;
uint8_t n2n_node_name[WWN_SIZE];
uint8_t n2n_port_name[WWN_SIZE];
uint16_t n2n_id;
} scsi_qla_host_t;
struct qla27xx_image_status {