2 smb3 debugging improvements

-----BEGIN PGP SIGNATURE-----
 
 iQGzBAABCgAdFiEE6fsu8pdIjtWE/DpLiiy9cAdyT1EFAmKuOPcACgkQiiy9cAdy
 T1FNoAv/VZwWl1J5iFVAbZhLAt/LhkL/1Ee8TeMRxa7QExifBJ4latsi1duOXBnR
 bRQ+lFuDmg1cuma4aayH7bHGnZZMEoZku0bpj/h8MOTf/w+GLIUUH/0LSEOi1klz
 nmj3fbJ4TMF/rA0Elsz4/iJIZhka3QbTAS3y7l9SlsLlgktoKJuZpEEuRgFsYNEW
 zdQMbb7q53L2txDDZAnR5TqesDgzeXePnvVRZDPAar8HnYrOg4sC6ueqxJtUKKBP
 TcC/2956tXHqd+5EYyH2Vuspf38dGxYs5qIhsMokRoMx42dAQ824JeuFy+D7eps6
 /hwDp+U1XIdllQW7qVD8MZ5CzIZlFKTZGu/B4Uh7GAtzluIAFyayGhVcDdj7LFVV
 fEaR8N9og9DEAmqUhsKLBZM656lhpu38cOslpGqNw0gCSZNxLyyp1hNkXrVlYv9L
 SwclZjoQbOBMPGriyv0h6rSaNoR+J7hps8cpW/eVnXMC5VNnsrXM+EYPJbu8EWYL
 SLJKZp6g
 =oBRl
 -----END PGP SIGNATURE-----

Merge tag '5.19-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs client fixes from Steve French:
 "Two cifs debugging improvements - one found to deal with debugging a
  multichannel problem and one for a recent fallocate issue

  This does include the two larger multichannel reconnect (dynamically
  adjusting interfaces on reconnect) patches, because we recently found
  an additional problem with multichannel to one server type that I want
  to include at the same time"

* tag '5.19-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: when a channel is not found for server, log its connection id
  smb3: add trace point for SMB2_set_eof

fs/cifs/sess.c

@@ -81,6 +81,9 @@ cifs_ses_get_chan_index(struct cifs_ses *ses,
 	}
 
 	/* If we didn't find the channel, it is likely a bug */
+	if (server)
+		cifs_dbg(VFS, "unable to get chan index for server: 0x%llx",
+			 server->conn_id);
 	WARN_ON(1);
 	return 0;
 }

fs/cifs/smb2pdu.c

@@ -5154,6 +5154,8 @@ SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
 	data = &info;
 	size = sizeof(struct smb2_file_eof_info);
 
+	trace_smb3_set_eof(xid, persistent_fid, tcon->tid, tcon->ses->Suid, le64_to_cpu(*eof));
+
 	return send_set_info(xid, tcon, persistent_fid, volatile_fid,
 			pid, FILE_END_OF_FILE_INFORMATION, SMB2_O_INFO_FILE,
 			0, 1, &data, &size);

fs/cifs/trace.h

@@ -121,6 +121,44 @@ DEFINE_SMB3_RW_DONE_EVENT(query_dir_done);
 DEFINE_SMB3_RW_DONE_EVENT(zero_done);
 DEFINE_SMB3_RW_DONE_EVENT(falloc_done);
 
+/* For logging successful set EOF (truncate) */
+DECLARE_EVENT_CLASS(smb3_eof_class,
+	TP_PROTO(unsigned int xid,
+		__u64	fid,
+		__u32	tid,
+		__u64	sesid,
+		__u64	offset),
+	TP_ARGS(xid, fid, tid, sesid, offset),
+	TP_STRUCT__entry(
+		__field(unsigned int, xid)
+		__field(__u64, fid)
+		__field(__u32, tid)
+		__field(__u64, sesid)
+		__field(__u64, offset)
+	),
+	TP_fast_assign(
+		__entry->xid = xid;
+		__entry->fid = fid;
+		__entry->tid = tid;
+		__entry->sesid = sesid;
+		__entry->offset = offset;
+	),
+	TP_printk("xid=%u sid=0x%llx tid=0x%x fid=0x%llx offset=0x%llx",
+		__entry->xid, __entry->sesid, __entry->tid, __entry->fid,
+		__entry->offset)
+)
+
+#define DEFINE_SMB3_EOF_EVENT(name)         \
+DEFINE_EVENT(smb3_eof_class, smb3_##name,   \
+	TP_PROTO(unsigned int xid,		\
+		__u64	fid,			\
+		__u32	tid,			\
+		__u64	sesid,			\
+		__u64	offset),		\
+	TP_ARGS(xid, fid, tid, sesid, offset))
+
+DEFINE_SMB3_EOF_EVENT(set_eof);
+
 /*
  * For handle based calls other than read and write, and get/set info
  */