smb: smbdirect: introduce smbdirect_connection_legacy_debug_proc_show()

This will be used by the client in order to keep the debug output
in the current way without the need to access struct smbdirect_socket
internals.

Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

diff --git a/fs/smb/common/smbdirect/smbdirect_all_c_files.c b/fs/smb/common/smbdirect/smbdirect_all_c_files.c
index 963a1fc3b54b550dece2813c2f60d54937a11079..51b2bcda5596b1574523e8d24772449051ce61aa 100644 (file)
--- a/fs/smb/common/smbdirect/smbdirect_all_c_files.c
+++ b/fs/smb/common/smbdirect/smbdirect_all_c_files.c
@@ -19,3 +19,4 @@
 #include "smbdirect_connection.c"
 #include "smbdirect_mr.c"
 #include "smbdirect_rw.c"
+#include "smbdirect_debug.c"

diff --git a/fs/smb/common/smbdirect/smbdirect_debug.c b/fs/smb/common/smbdirect/smbdirect_debug.c
new file mode 100644 (file)
index 0000000..20b87d8
--- /dev/null
+++ b/fs/smb/common/smbdirect/smbdirect_debug.c
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *   Copyright (C) 2017, Microsoft Corporation.
+ *   Copyright (c) 2025, Stefan Metzmacher
+ */
+
+#include "smbdirect_internal.h"
+#include <linux/seq_file.h>
+
+__maybe_unused /* this is temporary while this file is included in others */
+static void smbdirect_connection_legacy_debug_proc_show(struct smbdirect_socket *sc,
+                                                       unsigned int rdma_readwrite_threshold,
+                                                       struct seq_file *m)
+{
+       const struct smbdirect_socket_parameters *sp;
+
+       if (!sc)
+               return;
+       sp = &sc->parameters;
+
+       seq_puts(m, "\n");
+       seq_printf(m, "SMBDirect protocol version: 0x%x ",
+                  SMBDIRECT_V1);
+       seq_printf(m, "transport status: %s (%u)",
+                  smbdirect_socket_status_string(sc->status),
+                  sc->status);
+
+       seq_puts(m, "\n");
+       seq_printf(m, "Conn receive_credit_max: %u ",
+                  sp->recv_credit_max);
+       seq_printf(m, "send_credit_target: %u max_send_size: %u",
+                  sp->send_credit_target,
+                  sp->max_send_size);
+
+       seq_puts(m, "\n");
+       seq_printf(m, "Conn max_fragmented_recv_size: %u ",
+                  sp->max_fragmented_recv_size);
+       seq_printf(m, "max_fragmented_send_size: %u max_receive_size:%u",
+                  sp->max_fragmented_send_size,
+                  sp->max_recv_size);
+
+       seq_puts(m, "\n");
+       seq_printf(m, "Conn keep_alive_interval: %u ",
+                  sp->keepalive_interval_msec * 1000);
+       seq_printf(m, "max_readwrite_size: %u rdma_readwrite_threshold: %u",
+                  sp->max_read_write_size,
+                  rdma_readwrite_threshold);
+
+       seq_puts(m, "\n");
+       seq_printf(m, "Debug count_get_receive_buffer: %llu ",
+                  sc->statistics.get_receive_buffer);
+       seq_printf(m, "count_put_receive_buffer: %llu count_send_empty: %llu",
+                  sc->statistics.put_receive_buffer,
+                  sc->statistics.send_empty);
+
+       seq_puts(m, "\n");
+       seq_printf(m, "Read Queue count_enqueue_reassembly_queue: %llu ",
+                  sc->statistics.enqueue_reassembly_queue);
+       seq_printf(m, "count_dequeue_reassembly_queue: %llu ",
+                  sc->statistics.dequeue_reassembly_queue);
+       seq_printf(m, "reassembly_data_length: %u ",
+                  sc->recv_io.reassembly.data_length);
+       seq_printf(m, "reassembly_queue_length: %u",
+                  sc->recv_io.reassembly.queue_length);
+
+       seq_puts(m, "\n");
+       seq_printf(m, "Current Credits send_credits: %u ",
+                  atomic_read(&sc->send_io.credits.count));
+       seq_printf(m, "receive_credits: %u receive_credit_target: %u",
+                  atomic_read(&sc->recv_io.credits.count),
+                  sc->recv_io.credits.target);
+
+       seq_puts(m, "\n");
+       seq_printf(m, "Pending send_pending: %u ",
+                  atomic_read(&sc->send_io.pending.count));
+
+       seq_puts(m, "\n");
+       seq_printf(m, "MR responder_resources: %u ",
+                  sp->responder_resources);
+       seq_printf(m, "max_frmr_depth: %u mr_type: 0x%x",
+                  sp->max_frmr_depth,
+                  sc->mr_io.type);
+
+       seq_puts(m, "\n");
+       seq_printf(m, "MR mr_ready_count: %u mr_used_count: %u",
+                  atomic_read(&sc->mr_io.ready.count),
+                  atomic_read(&sc->mr_io.used.count));
+}