diff options
author | James Smart <james.smart@emulex.com> | 2011-10-11 01:34:11 (GMT) |
---|---|---|
committer | James Bottomley <JBottomley@Parallels.com> | 2011-10-16 16:32:53 (GMT) |
commit | f9bb2da11db805fca899a18d7d1bb97860fc2cd5 (patch) | |
tree | f43a24da27b0600fb2e98c035cadf5c930bf2a79 /drivers/scsi | |
parent | 5350d872c19a59ef8eadab1e70db83064c134cfa (diff) | |
download | linux-fsl-qoriq-f9bb2da11db805fca899a18d7d1bb97860fc2cd5.tar.xz |
[SCSI] lpfc 8.3.27: T10 additions for SLI4
Added T10 DIFF error injection code.
Added T10 DIFF structure definitions for SLI4 devices.
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r-- | drivers/scsi/lpfc/lpfc.h | 20 | ||||
-rw-r--r-- | drivers/scsi/lpfc/lpfc_debugfs.c | 181 | ||||
-rw-r--r-- | drivers/scsi/lpfc/lpfc_hw4.h | 88 | ||||
-rw-r--r-- | drivers/scsi/lpfc/lpfc_scsi.c | 199 | ||||
-rw-r--r-- | drivers/scsi/lpfc/lpfc_sli.c | 2 |
5 files changed, 471 insertions, 19 deletions
diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h index c088a36..bb4c8e0 100644 --- a/drivers/scsi/lpfc/lpfc.h +++ b/drivers/scsi/lpfc/lpfc.h @@ -846,8 +846,24 @@ struct lpfc_hba { struct dentry *debug_hbqinfo; struct dentry *debug_dumpHostSlim; struct dentry *debug_dumpHBASlim; - struct dentry *debug_dumpData; /* BlockGuard BPL*/ - struct dentry *debug_dumpDif; /* BlockGuard BPL*/ + struct dentry *debug_dumpData; /* BlockGuard BPL */ + struct dentry *debug_dumpDif; /* BlockGuard BPL */ + struct dentry *debug_InjErrLBA; /* LBA to inject errors at */ + struct dentry *debug_writeGuard; /* inject write guard_tag errors */ + struct dentry *debug_writeApp; /* inject write app_tag errors */ + struct dentry *debug_writeRef; /* inject write ref_tag errors */ + struct dentry *debug_readApp; /* inject read app_tag errors */ + struct dentry *debug_readRef; /* inject read ref_tag errors */ + + /* T10 DIF error injection */ + uint32_t lpfc_injerr_wgrd_cnt; + uint32_t lpfc_injerr_wapp_cnt; + uint32_t lpfc_injerr_wref_cnt; + uint32_t lpfc_injerr_rapp_cnt; + uint32_t lpfc_injerr_rref_cnt; + sector_t lpfc_injerr_lba; +#define LPFC_INJERR_LBA_OFF (sector_t)0xffffffffffffffff + struct dentry *debug_slow_ring_trc; struct lpfc_debugfs_trc *slow_ring_trc; atomic_t slow_ring_trc_cnt; diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c index a0424dd..2cd844f 100644 --- a/drivers/scsi/lpfc/lpfc_debugfs.c +++ b/drivers/scsi/lpfc/lpfc_debugfs.c @@ -996,6 +996,85 @@ lpfc_debugfs_dumpDataDif_write(struct file *file, const char __user *buf, return nbytes; } +static int +lpfc_debugfs_dif_err_open(struct inode *inode, struct file *file) +{ + file->private_data = inode->i_private; + return 0; +} + +static ssize_t +lpfc_debugfs_dif_err_read(struct file *file, char __user *buf, + size_t nbytes, loff_t *ppos) +{ + struct dentry *dent = file->f_dentry; + struct lpfc_hba *phba = file->private_data; + char cbuf[16]; + int cnt = 0; + + if (dent == phba->debug_writeGuard) + cnt = snprintf(cbuf, 16, "%u\n", phba->lpfc_injerr_wgrd_cnt); + else if (dent == phba->debug_writeApp) + cnt = snprintf(cbuf, 16, "%u\n", phba->lpfc_injerr_wapp_cnt); + else if (dent == phba->debug_writeRef) + cnt = snprintf(cbuf, 16, "%u\n", phba->lpfc_injerr_wref_cnt); + else if (dent == phba->debug_readApp) + cnt = snprintf(cbuf, 16, "%u\n", phba->lpfc_injerr_rapp_cnt); + else if (dent == phba->debug_readRef) + cnt = snprintf(cbuf, 16, "%u\n", phba->lpfc_injerr_rref_cnt); + else if (dent == phba->debug_InjErrLBA) + cnt = snprintf(cbuf, 16, "0x%lx\n", + (unsigned long) phba->lpfc_injerr_lba); + else + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0547 Unknown debugfs error injection entry\n"); + + return simple_read_from_buffer(buf, nbytes, ppos, &cbuf, cnt); +} + +static ssize_t +lpfc_debugfs_dif_err_write(struct file *file, const char __user *buf, + size_t nbytes, loff_t *ppos) +{ + struct dentry *dent = file->f_dentry; + struct lpfc_hba *phba = file->private_data; + char dstbuf[32]; + unsigned long tmp; + int size; + + memset(dstbuf, 0, 32); + size = (nbytes < 32) ? nbytes : 32; + if (copy_from_user(dstbuf, buf, size)) + return 0; + + if (strict_strtoul(dstbuf, 0, &tmp)) + return 0; + + if (dent == phba->debug_writeGuard) + phba->lpfc_injerr_wgrd_cnt = (uint32_t)tmp; + else if (dent == phba->debug_writeApp) + phba->lpfc_injerr_wapp_cnt = (uint32_t)tmp; + else if (dent == phba->debug_writeRef) + phba->lpfc_injerr_wref_cnt = (uint32_t)tmp; + else if (dent == phba->debug_readApp) + phba->lpfc_injerr_rapp_cnt = (uint32_t)tmp; + else if (dent == phba->debug_readRef) + phba->lpfc_injerr_rref_cnt = (uint32_t)tmp; + else if (dent == phba->debug_InjErrLBA) + phba->lpfc_injerr_lba = (sector_t)tmp; + else + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0548 Unknown debugfs error injection entry\n"); + + return nbytes; +} + +static int +lpfc_debugfs_dif_err_release(struct inode *inode, struct file *file) +{ + return 0; +} + /** * lpfc_debugfs_nodelist_open - Open the nodelist debugfs file * @inode: The inode pointer that contains a vport pointer. @@ -3380,6 +3459,16 @@ static const struct file_operations lpfc_debugfs_op_dumpDif = { .release = lpfc_debugfs_dumpDataDif_release, }; +#undef lpfc_debugfs_op_dif_err +static const struct file_operations lpfc_debugfs_op_dif_err = { + .owner = THIS_MODULE, + .open = lpfc_debugfs_dif_err_open, + .llseek = lpfc_debugfs_lseek, + .read = lpfc_debugfs_dif_err_read, + .write = lpfc_debugfs_dif_err_write, + .release = lpfc_debugfs_dif_err_release, +}; + #undef lpfc_debugfs_op_slow_ring_trc static const struct file_operations lpfc_debugfs_op_slow_ring_trc = { .owner = THIS_MODULE, @@ -3788,6 +3877,74 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport) goto debug_failed; } + /* Setup DIF Error Injections */ + snprintf(name, sizeof(name), "InjErrLBA"); + phba->debug_InjErrLBA = + debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, + phba->hba_debugfs_root, + phba, &lpfc_debugfs_op_dif_err); + if (!phba->debug_InjErrLBA) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "0807 Cannot create debugfs InjErrLBA\n"); + goto debug_failed; + } + phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF; + + snprintf(name, sizeof(name), "writeGuardInjErr"); + phba->debug_writeGuard = + debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, + phba->hba_debugfs_root, + phba, &lpfc_debugfs_op_dif_err); + if (!phba->debug_writeGuard) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "0802 Cannot create debugfs writeGuard\n"); + goto debug_failed; + } + + snprintf(name, sizeof(name), "writeAppInjErr"); + phba->debug_writeApp = + debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, + phba->hba_debugfs_root, + phba, &lpfc_debugfs_op_dif_err); + if (!phba->debug_writeApp) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "0803 Cannot create debugfs writeApp\n"); + goto debug_failed; + } + + snprintf(name, sizeof(name), "writeRefInjErr"); + phba->debug_writeRef = + debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, + phba->hba_debugfs_root, + phba, &lpfc_debugfs_op_dif_err); + if (!phba->debug_writeRef) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "0804 Cannot create debugfs writeRef\n"); + goto debug_failed; + } + + snprintf(name, sizeof(name), "readAppInjErr"); + phba->debug_readApp = + debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, + phba->hba_debugfs_root, + phba, &lpfc_debugfs_op_dif_err); + if (!phba->debug_readApp) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "0805 Cannot create debugfs readApp\n"); + goto debug_failed; + } + + snprintf(name, sizeof(name), "readRefInjErr"); + phba->debug_readRef = + debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, + phba->hba_debugfs_root, + phba, &lpfc_debugfs_op_dif_err); + if (!phba->debug_readRef) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "0806 Cannot create debugfs readApp\n"); + goto debug_failed; + } + /* Setup slow ring trace */ if (lpfc_debugfs_max_slow_ring_trc) { num = lpfc_debugfs_max_slow_ring_trc - 1; @@ -4090,6 +4247,30 @@ lpfc_debugfs_terminate(struct lpfc_vport *vport) debugfs_remove(phba->debug_dumpDif); /* dumpDif */ phba->debug_dumpDif = NULL; } + if (phba->debug_InjErrLBA) { + debugfs_remove(phba->debug_InjErrLBA); /* InjErrLBA */ + phba->debug_InjErrLBA = NULL; + } + if (phba->debug_writeGuard) { + debugfs_remove(phba->debug_writeGuard); /* writeGuard */ + phba->debug_writeGuard = NULL; + } + if (phba->debug_writeApp) { + debugfs_remove(phba->debug_writeApp); /* writeApp */ + phba->debug_writeApp = NULL; + } + if (phba->debug_writeRef) { + debugfs_remove(phba->debug_writeRef); /* writeRef */ + phba->debug_writeRef = NULL; + } + if (phba->debug_readApp) { + debugfs_remove(phba->debug_readApp); /* readApp */ + phba->debug_readApp = NULL; + } + if (phba->debug_readRef) { + debugfs_remove(phba->debug_readRef); /* readRef */ + phba->debug_readRef = NULL; + } if (phba->slow_ring_trc) { kfree(phba->slow_ring_trc); diff --git a/drivers/scsi/lpfc/lpfc_hw4.h b/drivers/scsi/lpfc/lpfc_hw4.h index 1a41713..98d2152 100644 --- a/drivers/scsi/lpfc/lpfc_hw4.h +++ b/drivers/scsi/lpfc/lpfc_hw4.h @@ -1484,16 +1484,81 @@ struct sli4_sge { /* SLI-4 */ uint32_t addr_lo; uint32_t word2; -#define lpfc_sli4_sge_offset_SHIFT 0 /* Offset of buffer - Not used*/ -#define lpfc_sli4_sge_offset_MASK 0x1FFFFFFF +#define lpfc_sli4_sge_offset_SHIFT 0 +#define lpfc_sli4_sge_offset_MASK 0x07FFFFFF #define lpfc_sli4_sge_offset_WORD word2 -#define lpfc_sli4_sge_last_SHIFT 31 /* Last SEG in the SGL sets - this flag !! */ +#define lpfc_sli4_sge_type_SHIFT 27 +#define lpfc_sli4_sge_type_MASK 0x0000000F +#define lpfc_sli4_sge_type_WORD word2 +#define LPFC_SGE_TYPE_DATA 0x0 +#define LPFC_SGE_TYPE_DIF 0x4 +#define LPFC_SGE_TYPE_LSP 0x5 +#define LPFC_SGE_TYPE_PEDIF 0x6 +#define LPFC_SGE_TYPE_PESEED 0x7 +#define LPFC_SGE_TYPE_DISEED 0x8 +#define LPFC_SGE_TYPE_ENC 0x9 +#define LPFC_SGE_TYPE_ATM 0xA +#define LPFC_SGE_TYPE_SKIP 0xC +#define lpfc_sli4_sge_last_SHIFT 31 /* Last SEG in the SGL sets it */ #define lpfc_sli4_sge_last_MASK 0x00000001 #define lpfc_sli4_sge_last_WORD word2 uint32_t sge_len; }; +struct sli4_sge_diseed { /* SLI-4 */ + uint32_t ref_tag; + uint32_t ref_tag_tran; + + uint32_t word2; +#define lpfc_sli4_sge_dif_apptran_SHIFT 0 +#define lpfc_sli4_sge_dif_apptran_MASK 0x0000FFFF +#define lpfc_sli4_sge_dif_apptran_WORD word2 +#define lpfc_sli4_sge_dif_af_SHIFT 24 +#define lpfc_sli4_sge_dif_af_MASK 0x00000001 +#define lpfc_sli4_sge_dif_af_WORD word2 +#define lpfc_sli4_sge_dif_na_SHIFT 25 +#define lpfc_sli4_sge_dif_na_MASK 0x00000001 +#define lpfc_sli4_sge_dif_na_WORD word2 +#define lpfc_sli4_sge_dif_hi_SHIFT 26 +#define lpfc_sli4_sge_dif_hi_MASK 0x00000001 +#define lpfc_sli4_sge_dif_hi_WORD word2 +#define lpfc_sli4_sge_dif_type_SHIFT 27 +#define lpfc_sli4_sge_dif_type_MASK 0x0000000F +#define lpfc_sli4_sge_dif_type_WORD word2 +#define lpfc_sli4_sge_dif_last_SHIFT 31 /* Last SEG in the SGL sets it */ +#define lpfc_sli4_sge_dif_last_MASK 0x00000001 +#define lpfc_sli4_sge_dif_last_WORD word2 + uint32_t word3; +#define lpfc_sli4_sge_dif_apptag_SHIFT 0 +#define lpfc_sli4_sge_dif_apptag_MASK 0x0000FFFF +#define lpfc_sli4_sge_dif_apptag_WORD word3 +#define lpfc_sli4_sge_dif_bs_SHIFT 16 +#define lpfc_sli4_sge_dif_bs_MASK 0x00000007 +#define lpfc_sli4_sge_dif_bs_WORD word3 +#define lpfc_sli4_sge_dif_ai_SHIFT 19 +#define lpfc_sli4_sge_dif_ai_MASK 0x00000001 +#define lpfc_sli4_sge_dif_ai_WORD word3 +#define lpfc_sli4_sge_dif_me_SHIFT 20 +#define lpfc_sli4_sge_dif_me_MASK 0x00000001 +#define lpfc_sli4_sge_dif_me_WORD word3 +#define lpfc_sli4_sge_dif_re_SHIFT 21 +#define lpfc_sli4_sge_dif_re_MASK 0x00000001 +#define lpfc_sli4_sge_dif_re_WORD word3 +#define lpfc_sli4_sge_dif_ce_SHIFT 22 +#define lpfc_sli4_sge_dif_ce_MASK 0x00000001 +#define lpfc_sli4_sge_dif_ce_WORD word3 +#define lpfc_sli4_sge_dif_nr_SHIFT 23 +#define lpfc_sli4_sge_dif_nr_MASK 0x00000001 +#define lpfc_sli4_sge_dif_nr_WORD word3 +#define lpfc_sli4_sge_dif_oprx_SHIFT 24 +#define lpfc_sli4_sge_dif_oprx_MASK 0x0000000F +#define lpfc_sli4_sge_dif_oprx_WORD word3 +#define lpfc_sli4_sge_dif_optx_SHIFT 28 +#define lpfc_sli4_sge_dif_optx_MASK 0x0000000F +#define lpfc_sli4_sge_dif_optx_WORD word3 +/* optx and oprx use BG_OP_IN defines in lpfc_hw.h */ +}; + struct fcf_record { uint32_t max_rcv_size; uint32_t fka_adv_period; @@ -3023,6 +3088,9 @@ struct wqe_common { #define wqe_ctxt_tag_MASK 0x0000FFFF #define wqe_ctxt_tag_WORD word6 uint32_t word7; +#define wqe_dif_SHIFT 0 +#define wqe_dif_MASK 0x00000003 +#define wqe_dif_WORD word7 #define wqe_ct_SHIFT 2 #define wqe_ct_MASK 0x00000003 #define wqe_ct_WORD word7 @@ -3035,12 +3103,21 @@ struct wqe_common { #define wqe_class_SHIFT 16 #define wqe_class_MASK 0x00000007 #define wqe_class_WORD word7 +#define wqe_ar_SHIFT 19 +#define wqe_ar_MASK 0x00000001 +#define wqe_ar_WORD word7 +#define wqe_ag_SHIFT wqe_ar_SHIFT +#define wqe_ag_MASK wqe_ar_MASK +#define wqe_ag_WORD wqe_ar_WORD #define wqe_pu_SHIFT 20 #define wqe_pu_MASK 0x00000003 #define wqe_pu_WORD word7 #define wqe_erp_SHIFT 22 #define wqe_erp_MASK 0x00000001 #define wqe_erp_WORD word7 +#define wqe_conf_SHIFT wqe_erp_SHIFT +#define wqe_conf_MASK wqe_erp_MASK +#define wqe_conf_WORD wqe_erp_WORD #define wqe_lnk_SHIFT 23 #define wqe_lnk_MASK 0x00000001 #define wqe_lnk_WORD word7 @@ -3099,6 +3176,9 @@ struct wqe_common { #define wqe_xc_SHIFT 21 #define wqe_xc_MASK 0x00000001 #define wqe_xc_WORD word10 +#define wqe_sr_SHIFT 22 +#define wqe_sr_MASK 0x00000001 +#define wqe_sr_WORD word10 #define wqe_ccpe_SHIFT 23 #define wqe_ccpe_MASK 0x00000001 #define wqe_ccpe_WORD word10 diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c index 2a3c9c9..5b8790b 100644 --- a/drivers/scsi/lpfc/lpfc_scsi.c +++ b/drivers/scsi/lpfc/lpfc_scsi.c @@ -58,6 +58,13 @@ static char *dif_op_str[] = { "SCSI_PROT_READ_PASS", "SCSI_PROT_WRITE_PASS", }; + +struct scsi_dif_tuple { + __be16 guard_tag; /* Checksum */ + __be16 app_tag; /* Opaque storage */ + __be32 ref_tag; /* Target LBA or indirect LBA */ +}; + static void lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb); static void @@ -1263,6 +1270,174 @@ lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) return 0; } +static inline unsigned +lpfc_cmd_blksize(struct scsi_cmnd *sc) +{ + return sc->device->sector_size; +} + +#ifdef CONFIG_SCSI_LPFC_DEBUG_FS +/* + * Given a scsi cmnd, determine the BlockGuard tags to be used with it + * @sc: The SCSI command to examine + * @reftag: (out) BlockGuard reference tag for transmitted data + * @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 + */ +static int +lpfc_bg_err_inject(struct lpfc_hba *phba, struct scsi_cmnd *sc, + uint32_t *reftag, uint16_t *apptag, uint32_t new_guard) +{ + struct scatterlist *sgpe; /* s/g prot entry */ + struct scatterlist *sgde; /* s/g data entry */ + struct scsi_dif_tuple *src; + uint32_t op = scsi_get_prot_op(sc); + uint32_t blksize; + uint32_t numblks; + sector_t lba; + int rc = 0; + + if (op == SCSI_PROT_NORMAL) + return 0; + + lba = scsi_get_lba(sc); + if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) { + blksize = lpfc_cmd_blksize(sc); + numblks = (scsi_bufflen(sc) + blksize - 1) / blksize; + + /* Make sure we have the right LBA if one is specified */ + if ((phba->lpfc_injerr_lba < lba) || + (phba->lpfc_injerr_lba >= (lba + numblks))) + return 0; + } + + 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) { + + /* 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; + + lpfc_printf_log(phba, KERN_ERR, LOG_BG, + "9081 BLKGRD: Injecting reftag error: " + "write lba x%lx\n", (unsigned long)lba); + } + } else { + if (phba->lpfc_injerr_rref_cnt) { + *reftag = 0xDEADBEEF; + phba->lpfc_injerr_rref_cnt--; + phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF; + rc = 1; + + lpfc_printf_log(phba, KERN_ERR, LOG_BG, + "9076 BLKGRD: Injecting reftag error: " + "read lba x%lx\n", (unsigned long)lba); + } + } + } + + /* 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) { + + /* 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; + + lpfc_printf_log(phba, KERN_ERR, LOG_BG, + "9077 BLKGRD: Injecting apptag error: " + "write lba x%lx\n", (unsigned long)lba); + } + } else { + if (phba->lpfc_injerr_rapp_cnt) { + *apptag = 0xDEAD; + phba->lpfc_injerr_rapp_cnt--; + phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF; + rc = 1; + + lpfc_printf_log(phba, KERN_ERR, LOG_BG, + "9078 BLKGRD: Injecting apptag error: " + "read lba x%lx\n", (unsigned long)lba); + } + } + } + + /* Should we change the 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); + + src->guard_tag = (uint16_t)new_guard; + phba->lpfc_injerr_wgrd_cnt--; + phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF; + rc = 1; + + } 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, + "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; + } + } + return rc; +} +#endif + /* * Given a scsi cmnd, determine the BlockGuard opcodes to be used with it * @sc: The SCSI command to examine @@ -1341,18 +1516,6 @@ lpfc_sc_to_bg_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc, return ret; } -struct scsi_dif_tuple { - __be16 guard_tag; /* Checksum */ - __be16 app_tag; /* Opaque storage */ - __be32 ref_tag; /* Target LBA or indirect LBA */ -}; - -static inline unsigned -lpfc_cmd_blksize(struct scsi_cmnd *sc) -{ - return sc->device->sector_size; -} - /* * This function sets up buffer list for protection groups of * type LPFC_PG_TYPE_NO_DIF @@ -1401,6 +1564,11 @@ lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc, blksize = lpfc_cmd_blksize(sc); reftag = scsi_get_lba(sc) & 0xffffffff; +#ifdef CONFIG_SCSI_LPFC_DEBUG_FS + /* reftag is the only error we can inject here */ + lpfc_bg_err_inject(phba, sc, &reftag, 0, 0); +#endif + /* setup PDE5 with what we have */ pde5 = (struct lpfc_pde5 *) bpl; memset(pde5, 0, sizeof(struct lpfc_pde5)); @@ -1532,6 +1700,11 @@ lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, blksize = lpfc_cmd_blksize(sc); reftag = scsi_get_lba(sc) & 0xffffffff; +#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); +#endif + split_offset = 0; do { /* setup PDE5 with what we have */ @@ -1671,7 +1844,6 @@ lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, } } while (!alldone); - out: return num_bde; @@ -2075,6 +2247,7 @@ lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) else bf_set(lpfc_sli4_sge_last, sgl, 0); bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); + bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); sgl->word2 = cpu_to_le32(sgl->word2); sgl->sge_len = cpu_to_le32(dma_len); dma_offset += dma_len; diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index c430aad..4d4104f 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -7538,6 +7538,8 @@ lpfc_sli4_bpl2sgl(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq, if (inbound == 1) offset = 0; bf_set(lpfc_sli4_sge_offset, sgl, offset); + bf_set(lpfc_sli4_sge_type, sgl, + LPFC_SGE_TYPE_DATA); offset += bde.tus.f.bdeSize; } sgl->word2 = cpu_to_le32(sgl->word2); |