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scsi: lpfc: Add loopback testing to trunking mode

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When in trunking mode, the adapter can be placed into diagnostic mode and
each link in the trunk tested via loopback.

Add support to the driver to perform per-link loopback testing when in
trunking mode.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
这个提交包含在：
James Smart
2019-03-12 16:30:27 -07:00
提交者 Martin K. Petersen
父节点 f3339800f9
当前提交 9a66d990c7
共修改 4 个文件，包含 128 行新增和 37 行删除
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121
drivers/scsi/lpfc/lpfc_bsg.c
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@@ -1968,14 +1968,17 @@ link_diag_state_set_out:
}
/**
* lpfc_sli4_bsg_set_internal_loopback - set sli4 internal loopback diagnostic
* lpfc_sli4_bsg_set_loopback_mode - set sli4 internal loopback diagnostic
* @phba: Pointer to HBA context object.
* @mode: loopback mode to set
* @link_no: link number for loopback mode to set
*
* This function is responsible for issuing a sli4 mailbox command for setting
* up internal loopback diagnostic.
* up loopback diagnostic for a link.
*/
static int
lpfc_sli4_bsg_set_internal_loopback(struct lpfc_hba *phba)
lpfc_sli4_bsg_set_loopback_mode(struct lpfc_hba *phba, int mode,
uint32_t link_no)
{
LPFC_MBOXQ_t *pmboxq;
uint32_t req_len, alloc_len;
@@ -1996,11 +1999,19 @@ lpfc_sli4_bsg_set_internal_loopback(struct lpfc_hba *phba)
}
link_diag_loopback = &pmboxq->u.mqe.un.link_diag_loopback;
bf_set(lpfc_mbx_set_diag_state_link_num,
&link_diag_loopback->u.req, phba->sli4_hba.lnk_info.lnk_no);
bf_set(lpfc_mbx_set_diag_state_link_type,
&link_diag_loopback->u.req, phba->sli4_hba.lnk_info.lnk_tp);
&link_diag_loopback->u.req, link_no);
if (phba->sli4_hba.conf_trunk & (1 << link_no)) {
bf_set(lpfc_mbx_set_diag_state_link_type,
&link_diag_loopback->u.req, LPFC_LNK_FC_TRUNKED);
} else {
bf_set(lpfc_mbx_set_diag_state_link_type,
&link_diag_loopback->u.req,
phba->sli4_hba.lnk_info.lnk_tp);
}
bf_set(lpfc_mbx_set_diag_lpbk_type, &link_diag_loopback->u.req,
LPFC_DIAG_LOOPBACK_TYPE_INTERNAL);
mode);
mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus)) {
@@ -2054,7 +2065,7 @@ lpfc_sli4_bsg_diag_loopback_mode(struct lpfc_hba *phba, struct bsg_job *job)
struct fc_bsg_request *bsg_request = job->request;
struct fc_bsg_reply *bsg_reply = job->reply;
struct diag_mode_set *loopback_mode;
uint32_t link_flags, timeout;
uint32_t link_flags, timeout, link_no;
int i, rc = 0;
/* no data to return just the return code */
@@ -2069,12 +2080,39 @@ lpfc_sli4_bsg_diag_loopback_mode(struct lpfc_hba *phba, struct bsg_job *job)
(int)(sizeof(struct fc_bsg_request) +
sizeof(struct diag_mode_set)));
rc = -EINVAL;
goto job_error;
goto job_done;
}
loopback_mode = (struct diag_mode_set *)
bsg_request->rqst_data.h_vendor.vendor_cmd;
link_flags = loopback_mode->type;
timeout = loopback_mode->timeout * 100;
if (loopback_mode->physical_link == -1)
link_no = phba->sli4_hba.lnk_info.lnk_no;
else
link_no = loopback_mode->physical_link;
if (link_flags == DISABLE_LOOP_BACK) {
rc = lpfc_sli4_bsg_set_loopback_mode(phba,
LPFC_DIAG_LOOPBACK_TYPE_DISABLE,
link_no);
if (!rc) {
/* Unset the need disable bit */
phba->sli4_hba.conf_trunk &= ~((1 << link_no) << 4);
}
goto job_done;
} else {
/* Check if we need to disable the loopback state */
if (phba->sli4_hba.conf_trunk & ((1 << link_no) << 4)) {
rc = -EPERM;
goto job_done;
}
}
rc = lpfc_bsg_diag_mode_enter(phba);
if (rc)
goto job_error;
goto job_done;
/* indicate we are in loobpack diagnostic mode */
spin_lock_irq(&phba->hbalock);
@@ -2084,15 +2122,11 @@ lpfc_sli4_bsg_diag_loopback_mode(struct lpfc_hba *phba, struct bsg_job *job)
/* reset port to start frome scratch */
rc = lpfc_selective_reset(phba);
if (rc)
goto job_error;
goto job_done;
/* bring the link to diagnostic mode */
lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
"3129 Bring link to diagnostic state.\n");
loopback_mode = (struct diag_mode_set *)
bsg_request->rqst_data.h_vendor.vendor_cmd;
link_flags = loopback_mode->type;
timeout = loopback_mode->timeout * 100;
rc = lpfc_sli4_bsg_set_link_diag_state(phba, 1);
if (rc) {
@@ -2120,13 +2154,54 @@ lpfc_sli4_bsg_diag_loopback_mode(struct lpfc_hba *phba, struct bsg_job *job)
lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
"3132 Set up loopback mode:x%x\n", link_flags);
if (link_flags == INTERNAL_LOOP_BACK)
rc = lpfc_sli4_bsg_set_internal_loopback(phba);
else if (link_flags == EXTERNAL_LOOP_BACK)
rc = lpfc_hba_init_link_fc_topology(phba,
FLAGS_TOPOLOGY_MODE_PT_PT,
MBX_NOWAIT);
else {
switch (link_flags) {
case INTERNAL_LOOP_BACK:
if (phba->sli4_hba.conf_trunk & (1 << link_no)) {
rc = lpfc_sli4_bsg_set_loopback_mode(phba,
LPFC_DIAG_LOOPBACK_TYPE_INTERNAL,
link_no);
} else {
/* Trunk is configured, but link is not in this trunk */
if (phba->sli4_hba.conf_trunk) {
rc = -ELNRNG;
goto loopback_mode_exit;
}
rc = lpfc_sli4_bsg_set_loopback_mode(phba,
LPFC_DIAG_LOOPBACK_TYPE_INTERNAL,
link_no);
}
if (!rc) {
/* Set the need disable bit */
phba->sli4_hba.conf_trunk |= (1 << link_no) << 4;
}
break;
case EXTERNAL_LOOP_BACK:
if (phba->sli4_hba.conf_trunk & (1 << link_no)) {
rc = lpfc_sli4_bsg_set_loopback_mode(phba,
LPFC_DIAG_LOOPBACK_TYPE_EXTERNAL_TRUNKED,
link_no);
} else {
/* Trunk is configured, but link is not in this trunk */
if (phba->sli4_hba.conf_trunk) {
rc = -ELNRNG;
goto loopback_mode_exit;
}
rc = lpfc_sli4_bsg_set_loopback_mode(phba,
LPFC_DIAG_LOOPBACK_TYPE_SERDES,
link_no);
}
if (!rc) {
/* Set the need disable bit */
phba->sli4_hba.conf_trunk |= (1 << link_no) << 4;
}
break;
default:
rc = -EINVAL;
lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
"3141 Loopback mode:x%x not supported\n",
@@ -2185,7 +2260,7 @@ loopback_mode_exit:
}
lpfc_bsg_diag_mode_exit(phba);
job_error:
job_done:
/* make error code available to userspace */
bsg_reply->result = rc;
/* complete the job back to userspace if no error */