From: James Smart <jsmart2021@gmail.com>
Date: Fri, 3 Dec 2021 16:26:43 -0800
Subject: scsi: lpfc: Add additional debugfs support for CMF
Patch-mainline: v5.17-rc1
Git-commit: 6014a2468f0e49194f612b1f09f99eacee0a409a
References: bsc1192145
Dump raw CMF parameter information in debugfs cgn_buffer.
Link: https://lore.kernel.org/r/20211204002644.116455-9-jsmart2021@gmail.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>
Acked-by: Daniel Wagner <dwagner@suse.de>
---
drivers/scsi/lpfc/lpfc_debugfs.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
--- a/drivers/scsi/lpfc/lpfc_debugfs.c
+++ b/drivers/scsi/lpfc/lpfc_debugfs.c
@@ -5491,7 +5491,7 @@ lpfc_cgn_buffer_read(struct file *file,
if (len > (LPFC_CGN_BUF_SIZE - LPFC_DEBUG_OUT_LINE_SZ)) {
len += scnprintf(buffer + len, LPFC_CGN_BUF_SIZE - len,
"Truncated . . .\n");
- break;
+ goto out;
}
len += scnprintf(buffer + len, LPFC_CGN_BUF_SIZE - len,
"%03x: %08x %08x %08x %08x "
@@ -5502,6 +5502,17 @@ lpfc_cgn_buffer_read(struct file *file,
cnt += 32;
ptr += 8;
}
+ if (len > (LPFC_CGN_BUF_SIZE - LPFC_DEBUG_OUT_LINE_SZ)) {
+ len += scnprintf(buffer + len, LPFC_CGN_BUF_SIZE - len,
+ "Truncated . . .\n");
+ goto out;
+ }
+ len += scnprintf(buffer + len, LPFC_CGN_BUF_SIZE - len,
+ "Parameter Data\n");
+ ptr = (uint32_t *)&phba->cgn_p;
+ len += scnprintf(buffer + len, LPFC_CGN_BUF_SIZE - len,
+ "%08x %08x %08x %08x\n",
+ *ptr, *(ptr + 1), *(ptr + 2), *(ptr + 3));
out:
return simple_read_from_buffer(buf, nbytes, ppos, buffer, len);
}