Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 3.18 19/47] Fix driver usage of 128B WQEs when WQ_CREATE is V1. | Date | Fri, 23 Mar 2018 10:55:10 +0100 |
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3.18-stable review patch. If anyone has any objections, please let me know.
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From: James Smart <jsmart2021@gmail.com>
[ Upstream commit 3f247de750b8dd8f50a2c1390e2a1238790a9dff ]
There are two versions of a structure for queue creation and setup that the driver shares with FW. The driver was only treating as version 0.
Verify WQ_CREATE with 128B WQEs in V0 and V1.
Code review of another bug showed the driver passing 128B WQEs and 8 pages in WQ CREATE and V0. Code inspection/instrumentation showed that the driver uses V0 in WQ_CREATE and if the caller passes queue->entry_size 128B, the driver sets the hdr_version to V1 so all is good. When I tested the V1 WQ_CREATE, the mailbox failed causing the driver to unload.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/scsi/lpfc/lpfc_sli.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -13469,6 +13469,9 @@ lpfc_wq_create(struct lpfc_hba *phba, st case LPFC_Q_CREATE_VERSION_1: bf_set(lpfc_mbx_wq_create_wqe_count, &wq_create->u.request_1, wq->entry_count); + bf_set(lpfc_mbox_hdr_version, &shdr->request, + LPFC_Q_CREATE_VERSION_1); + switch (wq->entry_size) { default: case 64:
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