}
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+
+#define BG_ERR_INIT 1
+#define BG_ERR_TGT 2
+#define BG_ERR_SWAP 3
+#define BG_ERR_CHECK 4
+
/**
* lpfc_bg_err_inject - Determine if we should inject an error
* @phba: The Hba for which this call is being executed.
* @apptag: (out) BlockGuard application tag for transmitted data
* @new_guard (in) Value to replace CRC with if needed
*
- * Returns (1) if error injection was performed, (0) otherwise
+ * Returns (1) if error injection is detected by Initiator
+ * Returns (2) if error injection is detected by Target
+ * Returns (3) if swapping CSUM->CRC is required for error injection
+ * Returns (4) disabling Guard/Ref/App checking is required for error injection
**/
static int
lpfc_bg_err_inject(struct lpfc_hba *phba, struct scsi_cmnd *sc,
{
struct scatterlist *sgpe; /* s/g prot entry */
struct scatterlist *sgde; /* s/g data entry */
- struct scsi_dif_tuple *src;
+ struct scsi_dif_tuple *src = NULL;
uint32_t op = scsi_get_prot_op(sc);
uint32_t blksize;
uint32_t numblks;
sector_t lba;
int rc = 0;
+ int blockoff = 0;
if (op == SCSI_PROT_NORMAL)
return 0;
+ sgpe = scsi_prot_sglist(sc);
+ sgde = scsi_sglist(sc);
+
lba = scsi_get_lba(sc);
if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) {
blksize = lpfc_cmd_blksize(sc);
if ((phba->lpfc_injerr_lba < lba) ||
(phba->lpfc_injerr_lba >= (lba + numblks)))
return 0;
+ if (sgpe) {
+ blockoff = phba->lpfc_injerr_lba - lba;
+ numblks = sg_dma_len(sgpe) /
+ sizeof(struct scsi_dif_tuple);
+ if (numblks < blockoff)
+ blockoff = numblks;
+ src = (struct scsi_dif_tuple *)sg_virt(sgpe);
+ src += blockoff;
+ }
}
- sgpe = scsi_prot_sglist(sc);
- sgde = scsi_sglist(sc);
-
/* Should we change the Reference Tag */
if (reftag) {
- /*
- * If we are SCSI_PROT_WRITE_STRIP, the protection data is
- * being stripped from the wire, thus it doesn't matter.
- */
- if ((op == SCSI_PROT_WRITE_PASS) ||
- (op == SCSI_PROT_WRITE_INSERT)) {
- if (phba->lpfc_injerr_wref_cnt) {
+ if (phba->lpfc_injerr_wref_cnt) {
+ switch (op) {
+ case SCSI_PROT_WRITE_PASS:
+ if (blockoff && src) {
+ /* Insert error in middle of the IO */
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9076 BLKGRD: Injecting reftag error: "
+ "write lba x%lx + x%x oldrefTag x%x\n",
+ (unsigned long)lba, blockoff,
+ src->ref_tag);
+ /*
+ * NOTE, this will change ref tag in
+ * the memory location forever!
+ */
+ src->ref_tag = 0xDEADBEEF;
+ phba->lpfc_injerr_wref_cnt--;
+ phba->lpfc_injerr_lba =
+ LPFC_INJERR_LBA_OFF;
+ rc = BG_ERR_CHECK;
+ break;
+ }
+ /* Drop thru */
+ case SCSI_PROT_WRITE_STRIP:
+ /*
+ * For WRITE_STRIP and WRITE_PASS,
+ * force the error on data
+ * being copied from SLI-Host to SLI-Port.
+ */
+ *reftag = 0xDEADBEEF;
+ phba->lpfc_injerr_wref_cnt--;
+ phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF;
+ rc = BG_ERR_INIT;
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9077 BLKGRD: Injecting reftag error: "
+ "write lba x%lx\n", (unsigned long)lba);
+ break;
+ case SCSI_PROT_WRITE_INSERT:
+ /*
+ * For WRITE_INSERT, force the
+ * error to be sent on the wire. It should be
+ * detected by the Target.
+ */
/* DEADBEEF will be the reftag on the wire */
*reftag = 0xDEADBEEF;
phba->lpfc_injerr_wref_cnt--;
phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF;
- rc = 1;
+ rc = BG_ERR_TGT;
lpfc_printf_log(phba, KERN_ERR, LOG_BG,
- "9081 BLKGRD: Injecting reftag error: "
+ "9078 BLKGRD: Injecting reftag error: "
"write lba x%lx\n", (unsigned long)lba);
+ break;
}
- } else {
- if (phba->lpfc_injerr_rref_cnt) {
+ }
+ if (phba->lpfc_injerr_rref_cnt) {
+ switch (op) {
+ case SCSI_PROT_READ_INSERT:
+ /*
+ * For READ_INSERT, it doesn't make sense
+ * to change the reftag.
+ */
+ break;
+ case SCSI_PROT_READ_STRIP:
+ case SCSI_PROT_READ_PASS:
+ /*
+ * For READ_STRIP and READ_PASS, force the
+ * error on data being read off the wire. It
+ * should force an IO error to the driver.
+ */
*reftag = 0xDEADBEEF;
phba->lpfc_injerr_rref_cnt--;
phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF;
- rc = 1;
+ rc = BG_ERR_INIT;
lpfc_printf_log(phba, KERN_ERR, LOG_BG,
- "9076 BLKGRD: Injecting reftag error: "
+ "9079 BLKGRD: Injecting reftag error: "
"read lba x%lx\n", (unsigned long)lba);
+ break;
}
}
}
/* Should we change the Application Tag */
if (apptag) {
- /*
- * If we are SCSI_PROT_WRITE_STRIP, the protection data is
- * being stripped from the wire, thus it doesn't matter.
- */
- if ((op == SCSI_PROT_WRITE_PASS) ||
- (op == SCSI_PROT_WRITE_INSERT)) {
- if (phba->lpfc_injerr_wapp_cnt) {
+ if (phba->lpfc_injerr_wapp_cnt) {
+ switch (op) {
+ case SCSI_PROT_WRITE_PASS:
+ if (blockoff && src) {
+ /* Insert error in middle of the IO */
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9080 BLKGRD: Injecting apptag error: "
+ "write lba x%lx + x%x oldappTag x%x\n",
+ (unsigned long)lba, blockoff,
+ src->app_tag);
+ /*
+ * NOTE, this will change app tag in
+ * the memory location forever!
+ */
+ src->app_tag = 0xDEAD;
+ phba->lpfc_injerr_wapp_cnt--;
+ phba->lpfc_injerr_lba =
+ LPFC_INJERR_LBA_OFF;
+ rc = BG_ERR_CHECK;
+ break;
+ }
+ /* Drop thru */
+ case SCSI_PROT_WRITE_STRIP:
+ /*
+ * For WRITE_STRIP and WRITE_PASS,
+ * force the error on data
+ * being copied from SLI-Host to SLI-Port.
+ */
+ *apptag = 0xDEAD;
+ phba->lpfc_injerr_wapp_cnt--;
+ phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF;
+ rc = BG_ERR_INIT;
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "0812 BLKGRD: Injecting apptag error: "
+ "write lba x%lx\n", (unsigned long)lba);
+ break;
+ case SCSI_PROT_WRITE_INSERT:
+ /*
+ * For WRITE_INSERT, force the
+ * error to be sent on the wire. It should be
+ * detected by the Target.
+ */
/* DEAD will be the apptag on the wire */
*apptag = 0xDEAD;
phba->lpfc_injerr_wapp_cnt--;
phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF;
- rc = 1;
+ rc = BG_ERR_TGT;
lpfc_printf_log(phba, KERN_ERR, LOG_BG,
- "9077 BLKGRD: Injecting apptag error: "
+ "0813 BLKGRD: Injecting apptag error: "
"write lba x%lx\n", (unsigned long)lba);
+ break;
}
- } else {
- if (phba->lpfc_injerr_rapp_cnt) {
+ }
+ if (phba->lpfc_injerr_rapp_cnt) {
+ switch (op) {
+ case SCSI_PROT_READ_INSERT:
+ /*
+ * For READ_INSERT, it doesn't make sense
+ * to change the apptag.
+ */
+ break;
+ case SCSI_PROT_READ_STRIP:
+ case SCSI_PROT_READ_PASS:
+ /*
+ * For READ_STRIP and READ_PASS, force the
+ * error on data being read off the wire. It
+ * should force an IO error to the driver.
+ */
*apptag = 0xDEAD;
phba->lpfc_injerr_rapp_cnt--;
phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF;
- rc = 1;
+ rc = BG_ERR_INIT;
lpfc_printf_log(phba, KERN_ERR, LOG_BG,
- "9078 BLKGRD: Injecting apptag error: "
+ "0814 BLKGRD: Injecting apptag error: "
"read lba x%lx\n", (unsigned long)lba);
+ break;
}
}
}
+
/* Should we change the Guard Tag */
+ if (new_guard) {
+ if (phba->lpfc_injerr_wgrd_cnt) {
+ switch (op) {
+ case SCSI_PROT_WRITE_PASS:
+ if (blockoff && src) {
+ /* Insert error in middle of the IO */
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "0815 BLKGRD: Injecting guard error: "
+ "write lba x%lx + x%x oldgrdTag x%x\n",
+ (unsigned long)lba, blockoff,
+ src->guard_tag);
- /*
- * If we are SCSI_PROT_WRITE_INSERT, the protection data is
- * being on the wire is being fully generated on the HBA.
- * The host cannot change it or force an error.
- */
- if (((op == SCSI_PROT_WRITE_STRIP) ||
- (op == SCSI_PROT_WRITE_PASS)) &&
- phba->lpfc_injerr_wgrd_cnt) {
- if (sgpe) {
- src = (struct scsi_dif_tuple *)sg_virt(sgpe);
- /*
- * Just inject an error in the first
- * prot block.
- */
- lpfc_printf_log(phba, KERN_ERR, LOG_BG,
- "9079 BLKGRD: Injecting guard error: "
- "write lba x%lx oldGuard x%x refTag x%x\n",
- (unsigned long)lba, src->guard_tag,
- src->ref_tag);
+ /*
+ * NOTE, this will change guard tag in
+ * the memory location forever!
+ */
+ src->guard_tag = 0xDEAD;
+ phba->lpfc_injerr_wgrd_cnt--;
+ phba->lpfc_injerr_lba =
+ LPFC_INJERR_LBA_OFF;
+ rc = BG_ERR_CHECK;
+ break;
+ }
+ /* Drop thru */
+ case SCSI_PROT_WRITE_STRIP:
+ /*
+ * For WRITE_STRIP and WRITE_PASS,
+ * force the error on data
+ * being copied from SLI-Host to SLI-Port.
+ */
+ phba->lpfc_injerr_wgrd_cnt--;
+ phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF;
- src->guard_tag = (uint16_t)new_guard;
- phba->lpfc_injerr_wgrd_cnt--;
- phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF;
- rc = 1;
+ rc = BG_ERR_SWAP;
+ /* Signals the caller to swap CRC->CSUM */
- } else {
- blksize = lpfc_cmd_blksize(sc);
- /*
- * Jump past the first data block
- * and inject an error in the
- * prot data. The prot data is already
- * embedded after the regular data.
- */
- src = (struct scsi_dif_tuple *)
- (sg_virt(sgde) + blksize);
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "0816 BLKGRD: Injecting guard error: "
+ "write lba x%lx\n", (unsigned long)lba);
+ break;
+ case SCSI_PROT_WRITE_INSERT:
+ /*
+ * For WRITE_INSERT, force the
+ * error to be sent on the wire. It should be
+ * detected by the Target.
+ */
+ phba->lpfc_injerr_wgrd_cnt--;
+ phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF;
- lpfc_printf_log(phba, KERN_ERR, LOG_BG,
- "9080 BLKGRD: Injecting guard error: "
- "write lba x%lx oldGuard x%x refTag x%x\n",
- (unsigned long)lba, src->guard_tag,
- src->ref_tag);
-
- src->guard_tag = (uint16_t)new_guard;
- phba->lpfc_injerr_wgrd_cnt--;
- phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF;
- rc = 1;
+ rc = BG_ERR_SWAP;
+ /* Signals the caller to swap CRC->CSUM */
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "0817 BLKGRD: Injecting guard error: "
+ "write lba x%lx\n", (unsigned long)lba);
+ break;
+ }
+ }
+ if (phba->lpfc_injerr_rgrd_cnt) {
+ switch (op) {
+ case SCSI_PROT_READ_INSERT:
+ /*
+ * For READ_INSERT, it doesn't make sense
+ * to change the guard tag.
+ */
+ break;
+ case SCSI_PROT_READ_STRIP:
+ case SCSI_PROT_READ_PASS:
+ /*
+ * For READ_STRIP and READ_PASS, force the
+ * error on data being read off the wire. It
+ * should force an IO error to the driver.
+ */
+ *apptag = 0xDEAD;
+ phba->lpfc_injerr_rgrd_cnt--;
+ phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF;
+
+ rc = BG_ERR_SWAP;
+ /* Signals the caller to swap CRC->CSUM */
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "0818 BLKGRD: Injecting guard error: "
+ "read lba x%lx\n", (unsigned long)lba);
+ }
}
}
+
return rc;
}
#endif
return ret;
}
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+/**
+ * lpfc_bg_err_opcodes - reDetermine the BlockGuard opcodes to be used with
+ * the specified SCSI command in order to force a guard tag error.
+ * @phba: The Hba for which this call is being executed.
+ * @sc: The SCSI command to examine
+ * @txopt: (out) BlockGuard operation for transmitted data
+ * @rxopt: (out) BlockGuard operation for received data
+ *
+ * Returns: zero on success; non-zero if tx and/or rx op cannot be determined
+ *
+ **/
+static int
+lpfc_bg_err_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc,
+ uint8_t *txop, uint8_t *rxop)
+{
+ uint8_t guard_type = scsi_host_get_guard(sc->device->host);
+ uint8_t ret = 0;
+
+ if (guard_type == SHOST_DIX_GUARD_IP) {
+ switch (scsi_get_prot_op(sc)) {
+ case SCSI_PROT_READ_INSERT:
+ case SCSI_PROT_WRITE_STRIP:
+ *txop = BG_OP_IN_CRC_OUT_NODIF;
+ *rxop = BG_OP_IN_NODIF_OUT_CRC;
+ break;
+
+ case SCSI_PROT_READ_STRIP:
+ case SCSI_PROT_WRITE_INSERT:
+ *txop = BG_OP_IN_NODIF_OUT_CSUM;
+ *rxop = BG_OP_IN_CSUM_OUT_NODIF;
+ break;
+
+ case SCSI_PROT_READ_PASS:
+ case SCSI_PROT_WRITE_PASS:
+ *txop = BG_OP_IN_CRC_OUT_CRC;
+ *rxop = BG_OP_IN_CRC_OUT_CRC;
+ break;
+
+ case SCSI_PROT_NORMAL:
+ default:
+ break;
+
+ }
+ } else {
+ switch (scsi_get_prot_op(sc)) {
+ case SCSI_PROT_READ_STRIP:
+ case SCSI_PROT_WRITE_INSERT:
+ *txop = BG_OP_IN_NODIF_OUT_CSUM;
+ *rxop = BG_OP_IN_CSUM_OUT_NODIF;
+ break;
+
+ case SCSI_PROT_READ_PASS:
+ case SCSI_PROT_WRITE_PASS:
+ *txop = BG_OP_IN_CSUM_OUT_CRC;
+ *rxop = BG_OP_IN_CRC_OUT_CSUM;
+ break;
+
+ case SCSI_PROT_READ_INSERT:
+ case SCSI_PROT_WRITE_STRIP:
+ *txop = BG_OP_IN_CSUM_OUT_NODIF;
+ *rxop = BG_OP_IN_NODIF_OUT_CSUM;
+ break;
+
+ case SCSI_PROT_NORMAL:
+ default:
+ break;
+ }
+ }
+
+ return ret;
+}
+#endif
+
/**
* lpfc_bg_setup_bpl - Setup BlockGuard BPL with no protection data
* @phba: The Hba for which this call is being executed.
dma_addr_t physaddr;
int i = 0, num_bde = 0, status;
int datadir = sc->sc_data_direction;
+ uint32_t rc;
+ uint32_t checking = 1;
uint32_t reftag;
unsigned blksize;
uint8_t txop, rxop;
reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
- /* reftag is the only error we can inject here */
- lpfc_bg_err_inject(phba, sc, &reftag, 0, 0);
+ rc = lpfc_bg_err_inject(phba, sc, &reftag, 0, 1);
+ if (rc) {
+ if (rc == BG_ERR_SWAP)
+ lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
+ if (rc == BG_ERR_CHECK)
+ checking = 0;
+ }
#endif
/* setup PDE5 with what we have */
bf_set(pde6_optx, pde6, txop);
bf_set(pde6_oprx, pde6, rxop);
if (datadir == DMA_FROM_DEVICE) {
- bf_set(pde6_ce, pde6, 1);
- bf_set(pde6_re, pde6, 1);
+ bf_set(pde6_ce, pde6, checking);
+ bf_set(pde6_re, pde6, checking);
}
bf_set(pde6_ai, pde6, 1);
bf_set(pde6_ae, pde6, 0);
int datadir = sc->sc_data_direction;
unsigned char pgdone = 0, alldone = 0;
unsigned blksize;
+ uint32_t rc;
+ uint32_t checking = 1;
uint32_t reftag;
uint8_t txop, rxop;
int num_bde = 0;
reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
- /* reftag / guard tag are the only errors we can inject here */
- lpfc_bg_err_inject(phba, sc, &reftag, 0, 0xDEAD);
+ rc = lpfc_bg_err_inject(phba, sc, &reftag, 0, 1);
+ if (rc) {
+ if (rc == BG_ERR_SWAP)
+ lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
+ if (rc == BG_ERR_CHECK)
+ checking = 0;
+ }
#endif
split_offset = 0;
bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR);
bf_set(pde6_optx, pde6, txop);
bf_set(pde6_oprx, pde6, rxop);
- bf_set(pde6_ce, pde6, 1);
- bf_set(pde6_re, pde6, 1);
+ bf_set(pde6_ce, pde6, checking);
+ bf_set(pde6_re, pde6, checking);
bf_set(pde6_ai, pde6, 1);
bf_set(pde6_ae, pde6, 0);
bf_set(pde6_apptagval, pde6, 0);
uint32_t reftag;
unsigned blksize;
uint8_t txop, rxop;
+ uint32_t rc;
+ uint32_t checking = 1;
uint32_t dma_len;
uint32_t dma_offset = 0;
reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
- /* reftag is the only error we can inject here */
- lpfc_bg_err_inject(phba, sc, &reftag, 0, 0);
+ rc = lpfc_bg_err_inject(phba, sc, &reftag, 0, 1);
+ if (rc) {
+ if (rc == BG_ERR_SWAP)
+ lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
+ if (rc == BG_ERR_CHECK)
+ checking = 0;
+ }
#endif
/* setup DISEED with what we have */
bf_set(lpfc_sli4_sge_dif_optx, diseed, txop);
bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop);
if (datadir == DMA_FROM_DEVICE) {
- bf_set(lpfc_sli4_sge_dif_ce, diseed, 1);
- bf_set(lpfc_sli4_sge_dif_re, diseed, 1);
+ bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
+ bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
}
bf_set(lpfc_sli4_sge_dif_ai, diseed, 1);
bf_set(lpfc_sli4_sge_dif_me, diseed, 0);
uint32_t reftag;
uint8_t txop, rxop;
uint32_t dma_len;
+ uint32_t rc;
+ uint32_t checking = 1;
uint32_t dma_offset = 0;
int num_sge = 0;
reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
- /* reftag is the only error we can inject here */
- lpfc_bg_err_inject(phba, sc, &reftag, 0, 0xDEAD);
+ rc = lpfc_bg_err_inject(phba, sc, &reftag, 0, 1);
+ if (rc) {
+ if (rc == BG_ERR_SWAP)
+ lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
+ if (rc == BG_ERR_CHECK)
+ checking = 0;
+ }
#endif
split_offset = 0;
/* setup DISEED with the rest of the info */
bf_set(lpfc_sli4_sge_dif_optx, diseed, txop);
bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop);
- bf_set(lpfc_sli4_sge_dif_ce, diseed, 1);
- bf_set(lpfc_sli4_sge_dif_re, diseed, 1);
+ bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
+ bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
bf_set(lpfc_sli4_sge_dif_ai, diseed, 1);
bf_set(lpfc_sli4_sge_dif_me, diseed, 0);
projects / users / jedix / linux-maple.git / commitdiff