1 files changed, 71 insertions, 0 deletions

diff --git a/net/dccp/diag.c b/net/dccp/diag.c
new file mode 100644
index 000000000000..f675d8e642d3
--- /dev/null
+++ b/net/dccp/diag.c
@@ -0,0 +1,71 @@
+/*
+ *  net/dccp/diag.c
+ *
+ *  An implementation of the DCCP protocol
+ *  Arnaldo Carvalho de Melo <acme@mandriva.com>
+ *
+ *      This program is free software; you can redistribute it and/or modify it
+ *      under the terms of the GNU General Public License version 2 as
+ *      published by the Free Software Foundation.
+ */
+
+#include <linux/config.h>
+
+#include <linux/module.h>
+#include <linux/inet_diag.h>
+
+#include "ccid.h"
+#include "dccp.h"
+
+static void dccp_get_info(struct sock *sk, struct tcp_info *info)
+{
+        struct dccp_sock *dp = dccp_sk(sk);
+        const struct inet_connection_sock *icsk = inet_csk(sk);
+
+        memset(info, 0, sizeof(*info));
+
+        info->tcpi_state        = sk->sk_state;
+        info->tcpi_retransmits  = icsk->icsk_retransmits;
+        info->tcpi_probes       = icsk->icsk_probes_out;
+        info->tcpi_backoff      = icsk->icsk_backoff;
+        info->tcpi_pmtu         = dp->dccps_pmtu_cookie;
+
+        if (dp->dccps_options.dccpo_send_ack_vector)
+                info->tcpi_options |= TCPI_OPT_SACK;
+
+        ccid_hc_rx_get_info(dp->dccps_hc_rx_ccid, sk, info);
+        ccid_hc_tx_get_info(dp->dccps_hc_tx_ccid, sk, info);
+}
+
+static void dccp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
+                               void *_info)
+{
+        r->idiag_rqueue = r->idiag_wqueue = 0;
+
+        if (_info != NULL)
+                dccp_get_info(sk, _info);
+}
+
+static struct inet_diag_handler dccp_diag_handler = {
+        .idiag_hashinfo  = &dccp_hashinfo,
+        .idiag_get_info  = dccp_diag_get_info,
+        .idiag_type      = DCCPDIAG_GETSOCK,
+        .idiag_info_size = sizeof(struct tcp_info),
+};
+
+static int __init dccp_diag_init(void)
+{
+        return inet_diag_register(&dccp_diag_handler);
+}
+
+static void __exit dccp_diag_fini(void)
+{
+        inet_diag_unregister(&dccp_diag_handler);
+}
+
+module_init(dccp_diag_init);
+module_exit(dccp_diag_fini);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Arnaldo Carvalho de Melo <acme@mandriva.com>");
+MODULE_DESCRIPTION("DCCP inet_diag handler");