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    Subject[Patch v2 19/19] CIFS: SMBD: Add SMBDirect debug counters
    Date
    From: Long Li <longli@microsoft.com>

    Export SMBDirect debug counters to /proc/fs/cifs/DebugData, for debugging and troubleshooting.

    Signed-off-by: Long Li <longli@microsoft.com>
    ---
    fs/cifs/cifs_debug.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
    1 file changed, 46 insertions(+)

    diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
    index ba0870d..ca73950 100644
    --- a/fs/cifs/cifs_debug.c
    +++ b/fs/cifs/cifs_debug.c
    @@ -30,6 +30,7 @@
    #include "cifsproto.h"
    #include "cifs_debug.h"
    #include "cifsfs.h"
    +#include "smbdirect.h"

    void
    cifs_dump_mem(char *label, void *data, int length)
    @@ -152,6 +153,51 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
    list_for_each(tmp1, &cifs_tcp_ses_list) {
    server = list_entry(tmp1, struct TCP_Server_Info,
    tcp_ses_list);
    +
    + if (!server->rdma)
    + goto skip_rdma;
    +
    + seq_printf(m, "\nSMBDirect transport status (all numbers in hex) protocol version: %x",
    + server->smbd_conn->protocol);
    + seq_printf(m, "\nConn receive_credit_max: %x send_credit_target: %x max_send_size: %x",
    + server->smbd_conn->receive_credit_max,
    + server->smbd_conn->send_credit_target,
    + server->smbd_conn->max_send_size);
    + seq_printf(m, "\nConn max_fragmented_recv_size: %x max_fragmented_send_size: %x max_receive_size:%x",
    + server->smbd_conn->max_fragmented_recv_size,
    + server->smbd_conn->max_fragmented_send_size,
    + server->smbd_conn->max_receive_size);
    + seq_printf(m, "\nConn keep_alive_interval: %x max_readwrite_size: %x rdma_readwrite_threshold: %x",
    + server->smbd_conn->keep_alive_interval,
    + server->smbd_conn->max_readwrite_size,
    + server->smbd_conn->rdma_readwrite_threshold);
    + seq_printf(m, "\nDebug count_receive_buffer: %x count_get_receive_buffer: %x count_put_receive_buffer: %x count_send_empty: %x",
    + server->smbd_conn->count_receive_buffer,
    + server->smbd_conn->count_get_receive_buffer,
    + server->smbd_conn->count_put_receive_buffer,
    + server->smbd_conn->count_send_empty);
    + seq_printf(m, "\nRead Queue count_reassembly_queue: %x count_enqueue_reassembly_queue: %x count_dequeue_reassembly_queue: %x fragment_reassembly_remaining: %x",
    + server->smbd_conn->count_reassembly_queue,
    + server->smbd_conn->count_enqueue_reassembly_queue,
    + server->smbd_conn->count_dequeue_reassembly_queue,
    + server->smbd_conn->fragment_reassembly_remaining);
    + seq_printf(m, "\nCurrent Credits send_credits: %x receive_credits: %x receive_credit_target: %x",
    + atomic_read(&server->smbd_conn->send_credits),
    + atomic_read(&server->smbd_conn->receive_credits),
    + server->smbd_conn->receive_credit_target);
    + seq_printf(m, "\nPending send_pending: %x send_payload_pending: %x recv_pending: %x read_pending: %x",
    + atomic_read(&server->smbd_conn->send_pending),
    + atomic_read(&server->smbd_conn->send_payload_pending),
    + atomic_read(&server->smbd_conn->recv_pending),
    + atomic_read(&server->smbd_conn->read_pending));
    + seq_printf(m, "\nMR responder_resources: %x max_frmr_depth: %x mr_type: %x",
    + server->smbd_conn->responder_resources,
    + server->smbd_conn->max_frmr_depth,
    + server->smbd_conn->mr_type);
    + seq_printf(m, "\nMR mr_ready_count: %x",
    + atomic_read(&server->smbd_conn->mr_ready_count));
    +
    +skip_rdma:
    seq_printf(m, "\nNumber of credits: %d", server->credits);
    i++;
    list_for_each(tmp2, &server->smb_ses_list) {
    --
    2.7.4
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