Commit b95e29b7 authored by James Smart's avatar James Smart Committed by Martin K. Petersen

scsi: lpfc: Fix receive PRLI handling

Handling a rcv'ed PRLI incorrectly can cause the ndlp to end up in the
wrong state or the driver to ACC and PRLI when it should send LS_RJT.

The cause was due to the driver not properly looking at the PRLI type
and taking the multiple protocol support into consideration.

Resolved by adding checks in the various PRLI receive points to validate
PRLI type and reject if not valid for the enabled protocols and mode
(host vs target).
Signed-off-by: default avatarDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: default avatarJames Smart <james.smart@broadcom.com>
Reviewed-by: default avatarHannes Reinecke <hare@suse.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent cbc5de1b
......@@ -8063,13 +8063,6 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
rjt_exp = LSEXP_NOTHING_MORE;
break;
}
/* NVMET accepts NVME PRLI only. Reject FCP PRLI */
if (cmd == ELS_CMD_PRLI && phba->nvmet_support) {
rjt_err = LSRJT_CMD_UNSUPPORTED;
rjt_exp = LSEXP_REQ_UNSUPPORTED;
break;
}
lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
break;
case ELS_CMD_LIRR:
......
......@@ -727,6 +727,41 @@ lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
return 0;
}
static uint32_t
lpfc_rcv_prli_support_check(struct lpfc_vport *vport,
struct lpfc_nodelist *ndlp,
struct lpfc_iocbq *cmdiocb)
{
struct ls_rjt stat;
uint32_t *payload;
uint32_t cmd;
payload = ((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
cmd = *payload;
if (vport->phba->nvmet_support) {
/* Must be a NVME PRLI */
if (cmd == ELS_CMD_PRLI)
goto out;
} else {
/* Initiator mode. */
if (!vport->nvmei_support && (cmd == ELS_CMD_NVMEPRLI))
goto out;
}
return 1;
out:
lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
"6115 Rcv PRLI (%x) check failed: ndlp rpi %d "
"state x%x flags x%x\n",
cmd, ndlp->nlp_rpi, ndlp->nlp_state,
ndlp->nlp_flag);
memset(&stat, 0, sizeof(struct ls_rjt));
stat.un.b.lsRjtRsnCode = LSRJT_CMD_UNSUPPORTED;
stat.un.b.lsRjtRsnCodeExp = LSEXP_REQ_UNSUPPORTED;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
ndlp, NULL);
return 0;
}
static void
lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
struct lpfc_iocbq *cmdiocb)
......@@ -1373,7 +1408,8 @@ lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
{
struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
return ndlp->nlp_state;
}
......@@ -1544,6 +1580,9 @@ lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
struct ls_rjt stat;
if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
return ndlp->nlp_state;
}
if (vport->phba->nvmet_support) {
/* NVME Target mode. Handle and respond to the PRLI and
* transition to UNMAPPED provided the RPI has completed
......@@ -1558,11 +1597,6 @@ lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
* to prevent an illegal state transition when the
* rpi registration does complete.
*/
lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
"6115 NVMET ndlp rpi %d state "
"unknown, state x%x flags x%08x\n",
ndlp->nlp_rpi, ndlp->nlp_state,
ndlp->nlp_flag);
memset(&stat, 0, sizeof(struct ls_rjt));
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
......@@ -1573,7 +1607,6 @@ lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
/* Initiator mode. */
lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
}
return ndlp->nlp_state;
}
......@@ -1819,6 +1852,8 @@ lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
{
struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
return ndlp->nlp_state;
lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
return ndlp->nlp_state;
}
......@@ -2241,6 +2276,9 @@ lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
{
struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
return ndlp->nlp_state;
lpfc_rcv_prli(vport, ndlp, cmdiocb);
lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
return ndlp->nlp_state;
......@@ -2310,6 +2348,8 @@ lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
{
struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
return ndlp->nlp_state;
lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
return ndlp->nlp_state;
}
......
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