diff mbox series

[01/13] lpfc: Fix prli_fc4_req checks in PRLI handling

Message ID 20220911221505.117655-2-jsmart2021@gmail.com (mailing list archive)
State Accepted
Headers show
Series lpfc: Update lpfc to revision 14.2.0.7 | expand

Commit Message

James Smart Sept. 11, 2022, 10:14 p.m. UTC 
The if statment check (prli_fc4_req & PRLI_NVME_TYPE) evaluates to
true when receiving a PRLI request for bogus FC4 type codes that
happen to have the 3rd or 5th bit set because PRLI_NVME_TYPE is 0x28.
This leads to sending a PRLI_NVME_ACC even for bogus FC4 type codes.

Change the bitwise & check to an exact == type code check to ensure
we send PRLI_NVME_ACC only for NVME type coded PRLI requests.

Co-developed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
---
 drivers/scsi/lpfc/lpfc_els.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index 9e69de9eb992..4c372553e2aa 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -6006,7 +6006,7 @@  lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
 	if (prli_fc4_req == PRLI_FCP_TYPE) {
 		cmdsize = sizeof(uint32_t) + sizeof(PRLI);
 		elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
-	} else if (prli_fc4_req & PRLI_NVME_TYPE) {
+	} else if (prli_fc4_req == PRLI_NVME_TYPE) {
 		cmdsize = sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli);
 		elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_NVMEPRLI & ~ELS_RSP_MASK));
 	} else {
@@ -6069,7 +6069,7 @@  lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
 		npr->ConfmComplAllowed = 1;
 		npr->prliType = PRLI_FCP_TYPE;
 		npr->initiatorFunc = 1;
-	} else if (prli_fc4_req & PRLI_NVME_TYPE) {
+	} else if (prli_fc4_req == PRLI_NVME_TYPE) {
 		/* Respond with an NVME PRLI Type */
 		npr_nvme = (struct lpfc_nvme_prli *) pcmd;
 		bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE);