rxrpc: Show a call's hard-ACK cursors in /proc/net/rxrpc_calls

Show a call's hard-ACK cursors in /proc/net/rxrpc_calls so that a call's
progress can be more easily monitored.

Signed-off-by: David Howells <dhowells@redhat.com>

diff --git a/net/rxrpc/proc.c b/net/rxrpc/proc.c
index 65cd980..b9bcfbf 100644 (file)
--- a/net/rxrpc/proc.c
+++ b/net/rxrpc/proc.c
@@ -52,6 +52,7 @@ static int rxrpc_call_seq_show(struct seq_file *seq, void *v)
        struct rxrpc_sock *rx;
        struct rxrpc_peer *peer;
        struct rxrpc_call *call;
+       rxrpc_seq_t tx_hard_ack, rx_hard_ack;
        char lbuff[50], rbuff[50];
 
        if (v == &rxrpc_calls) {
@@ -82,9 +83,11 @@ static int rxrpc_call_seq_show(struct seq_file *seq, void *v)
        else
                strcpy(rbuff, "no_connection");
 
+       tx_hard_ack = READ_ONCE(call->tx_hard_ack);
+       rx_hard_ack = READ_ONCE(call->rx_hard_ack);
        seq_printf(seq,
                   "UDP   %-47.47s %-47.47s %4x %08x %08x %s %3u"
-                  " %-8.8s %08x %lx\n",
+                  " %-8.8s %08x %lx %08x %02x %08x %02x\n",
                   lbuff,
                   rbuff,
                   call->service_id,
@@ -94,7 +97,9 @@ static int rxrpc_call_seq_show(struct seq_file *seq, void *v)
                   atomic_read(&call->usage),
                   rxrpc_call_states[call->state],
                   call->abort_code,
-                  call->user_call_ID);
+                  call->user_call_ID,
+                  tx_hard_ack, READ_ONCE(call->tx_top) - tx_hard_ack,
+                  rx_hard_ack, READ_ONCE(call->rx_top) - rx_hard_ack);
 
        return 0;
 }