Fix /proc/fs/cifs/DebugData to use the same case for "encryption"
(ie "Encryption" with init capital letter was used in one place).
In addition, if gcm256 encryption (intead of gcm128) is used on
a connection to a server, note that in the DebugData as well.
It now says (when gcm256 encryption negotiated):
Security type: RawNTLMSSP SessionId: 0x86125800bc000b0d encrypted(gcm256)
--
Thanks,
Steve
From 944aaafb5051ad6a20abe9183900f1ed69efe7a1 Mon Sep 17 00:00:00 2001
From: Steve French <stfrench@xxxxxxxxxxxxx>
Date: Tue, 23 May 2023 20:25:47 -0500
Subject: [PATCH] smb3: display debug information better for encryption
Fix /proc/fs/cifs/DebugData to use the same case for "encryption"
(ie "Encryption" with init capital letter was used in one place).
In addition, if gcm256 encryption (intead of gcm128) is used on
a connection to a server, note that in the DebugData as well.
Signed-off-by: Steven French <stfrench@xxxxxxxxxxxxx>
---
fs/cifs/cifs_debug.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index d4ed200a9471..74d2776e161f 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -108,7 +108,7 @@ static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon)
if ((tcon->seal) ||
(tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) ||
(tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA))
- seq_printf(m, " Encrypted");
+ seq_printf(m, " encrypted");
if (tcon->nocase)
seq_printf(m, " nocase");
if (tcon->unix_ext)
@@ -415,8 +415,12 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
/* dump session id helpful for use with network trace */
seq_printf(m, " SessionId: 0x%llx", ses->Suid);
- if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA)
+ if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) {
seq_puts(m, " encrypted");
+ /* can help in debugging to show encryption type */
+ if (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM)
+ seq_puts(m, "(gcm256)");
+ }
if (ses->sign)
seq_puts(m, " signed");
--
2.34.1
