diff options
| author | James Smart <jsmart2021@gmail.com> | 2022-04-13 01:20:02 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-04-19 05:48:46 +0300 |
| commit | d51cf5bd926c7d00bd8a77fc39db73766fbf2a27 (patch) | |
| tree | 13e0dc92f2138300159974eb563a9d7bdb5f8a3e /drivers/scsi/lpfc/lpfc_sli.h | |
| parent | 1045592fc968fe1e4b360b3bce2e9b522f173cdc (diff) | |
| download | linux-d51cf5bd926c7d00bd8a77fc39db73766fbf2a27.tar.xz | |
scsi: lpfc: Fix field overload in lpfc_iocbq data structure
The lpfc_iocbq data structure has void * pointers that are overloaded to be
as many as 8 different data types and the driver translates the void * by
casting. This patch removes the void * pointers by declaring the specific
types needed by the driver. It also expands the context_un to include more
seldom used pointer types to save structure bytes. It also groups the u8
types together to pack the 8 bytes needed. This work allows the lpfc_iocbq
data structure to be more strongly typed and keeps it from being allocated
from the 512 byte slab.
[mkp: rolled in zeroday fix]
Link: https://lore.kernel.org/r/20220412222008.126521-21-jsmart2021@gmail.com
Reported-by: kernel test robot <lkp@intel.com>
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>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_sli.h')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_sli.h | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/drivers/scsi/lpfc/lpfc_sli.h b/drivers/scsi/lpfc/lpfc_sli.h index 663cc90a8798..776eb4ab52d2 100644 --- a/drivers/scsi/lpfc/lpfc_sli.h +++ b/drivers/scsi/lpfc/lpfc_sli.h @@ -77,11 +77,15 @@ struct lpfc_iocbq { u32 unsol_rcv_len; /* Receive len in usol path */ - uint8_t num_bdes; - uint8_t abort_bls; /* ABTS by initiator or responder */ - u8 abort_rctl; /* ACC or RJT flag */ - uint8_t priority; /* OAS priority */ - uint8_t retry; /* retry counter for IOCB cmd - if needed */ + /* Pack the u8's together and make them module-4. */ + u8 num_bdes; /* Number of BDEs */ + u8 abort_bls; /* ABTS by initiator or responder */ + u8 abort_rctl; /* ACC or RJT flag */ + u8 priority; /* OAS priority */ + u8 retry; /* retry counter for IOCB cmd - if needed */ + u8 rsvd1; /* Pad for u32 */ + u8 rsvd2; /* Pad for u32 */ + u8 rsvd3; /* Pad for u32 */ u32 cmd_flag; #define LPFC_IO_LIBDFC 1 /* libdfc iocb */ @@ -116,18 +120,22 @@ struct lpfc_iocbq { uint32_t drvrTimeout; /* driver timeout in seconds */ struct lpfc_vport *vport;/* virtual port pointer */ - void *context1; /* caller context information */ - void *context2; /* caller context information */ - void *context3; /* caller context information */ + struct lpfc_dmabuf *cmd_dmabuf; + struct lpfc_dmabuf *rsp_dmabuf; + struct lpfc_dmabuf *bpl_dmabuf; uint32_t event_tag; /* LA Event tag */ union { wait_queue_head_t *wait_queue; - struct lpfc_iocbq *rsp_iocb; struct lpfcMboxq *mbox; - struct lpfc_nodelist *ndlp; struct lpfc_node_rrq *rrq; + struct nvmefc_ls_req *nvme_lsreq; + struct lpfc_async_xchg_ctx *axchg; + struct bsg_job_data *dd_data; } context_un; + struct lpfc_io_buf *io_buf; + struct lpfc_iocbq *rsp_iocb; + struct lpfc_nodelist *ndlp; union lpfc_vmid_tag vmid_tag; void (*fabric_cmd_cmpl)(struct lpfc_hba *phba, struct lpfc_iocbq *cmd, struct lpfc_iocbq *rsp); |