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authorJames Smart <jsmart2021@gmail.com>2019-08-27 14:28:05 -0700
committerMartin K. Petersen <martin.petersen@oracle.com>2019-08-29 18:08:58 -0400
commit9db6c14c36fc8f7824ade95f53bcdad43df678b4 (patch)
tree8d724084fb8bd3e34148ff79f882893253767fa0 /drivers/scsi/lpfc/lpfc_scsi.c
parent7f9989bace91a7a36051d64cbf46f7760c52bbf0 (diff)
scsi: lpfc: Remove bg debugfs buffers
Capturing and downloading dif command data and dif data was done a dozen years ago and no longer being used. Also creates a potential security hole. Remove the debugfs buffer for dif debugging. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> CC: KyleMahlkuch <kmahlkuc@linux.vnet.ibm.com> CC: Hannes Reinecke <hare@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_scsi.c')
-rw-r--r--drivers/scsi/lpfc/lpfc_scsi.c79
1 files changed, 0 insertions, 79 deletions
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index 7c65bd652c4d..fe1097666de4 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -53,8 +53,6 @@
#define LPFC_RESET_WAIT 2
#define LPFC_ABORT_WAIT 2
-int _dump_buf_done = 1;
-
static char *dif_op_str[] = {
"PROT_NORMAL",
"PROT_READ_INSERT",
@@ -89,63 +87,6 @@ lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *psb);
static int
lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc);
-static void
-lpfc_debug_save_data(struct lpfc_hba *phba, struct scsi_cmnd *cmnd)
-{
- void *src, *dst;
- struct scatterlist *sgde = scsi_sglist(cmnd);
-
- if (!_dump_buf_data) {
- lpfc_printf_log(phba, KERN_ERR, LOG_BG,
- "9050 BLKGRD: ERROR %s _dump_buf_data is NULL\n",
- __func__);
- return;
- }
-
-
- if (!sgde) {
- lpfc_printf_log(phba, KERN_ERR, LOG_BG,
- "9051 BLKGRD: ERROR: data scatterlist is null\n");
- return;
- }
-
- dst = (void *) _dump_buf_data;
- while (sgde) {
- src = sg_virt(sgde);
- memcpy(dst, src, sgde->length);
- dst += sgde->length;
- sgde = sg_next(sgde);
- }
-}
-
-static void
-lpfc_debug_save_dif(struct lpfc_hba *phba, struct scsi_cmnd *cmnd)
-{
- void *src, *dst;
- struct scatterlist *sgde = scsi_prot_sglist(cmnd);
-
- if (!_dump_buf_dif) {
- lpfc_printf_log(phba, KERN_ERR, LOG_BG,
- "9052 BLKGRD: ERROR %s _dump_buf_data is NULL\n",
- __func__);
- return;
- }
-
- if (!sgde) {
- lpfc_printf_log(phba, KERN_ERR, LOG_BG,
- "9053 BLKGRD: ERROR: prot scatterlist is null\n");
- return;
- }
-
- dst = _dump_buf_dif;
- while (sgde) {
- src = sg_virt(sgde);
- memcpy(dst, src, sgde->length);
- dst += sgde->length;
- sgde = sg_next(sgde);
- }
-}
-
static inline unsigned
lpfc_cmd_blksize(struct scsi_cmnd *sc)
{
@@ -2962,26 +2903,6 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd,
uint32_t bgstat = bgf->bgstat;
uint64_t failing_sector = 0;
- spin_lock(&_dump_buf_lock);
- if (!_dump_buf_done) {
- lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9070 BLKGRD: Saving"
- " Data for %u blocks to debugfs\n",
- (cmd->cmnd[7] << 8 | cmd->cmnd[8]));
- lpfc_debug_save_data(phba, cmd);
-
- /* If we have a prot sgl, save the DIF buffer */
- if (lpfc_prot_group_type(phba, cmd) ==
- LPFC_PG_TYPE_DIF_BUF) {
- lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9071 BLKGRD: "
- "Saving DIF for %u blocks to debugfs\n",
- (cmd->cmnd[7] << 8 | cmd->cmnd[8]));
- lpfc_debug_save_dif(phba, cmd);
- }
-
- _dump_buf_done = 1;
- }
- spin_unlock(&_dump_buf_lock);
-
if (lpfc_bgs_get_invalid_prof(bgstat)) {
cmd->result = DID_ERROR << 16;
lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,