[PATCH 8/9] lpfc: Add additional debugfs support for CMF
From: James Smart <hidden>
Date: 2021-12-04 00:27:01
Subsystem:
emulex/broadcom lpfc fc/fcoe scsi driver, scsi subsystem, the rest · Maintainers:
Justin Tee, Paul Ely, "James E.J. Bottomley", "Martin K. Petersen", Linus Torvalds
Dump raw CMF parameter information in debugfs cgn_buffer. Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <redacted> --- drivers/scsi/lpfc/lpfc_debugfs.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c
index ab2550ad0597..21152c9a96ef 100644
--- a/drivers/scsi/lpfc/lpfc_debugfs.c
+++ b/drivers/scsi/lpfc/lpfc_debugfs.c@@ -5484,7 +5484,7 @@ lpfc_cgn_buffer_read(struct file *file, char __user *buf, size_t nbytes, 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 "
@@ -5495,6 +5495,17 @@ lpfc_cgn_buffer_read(struct file *file, char __user *buf, size_t nbytes, 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); }
--
2.26.2