root/net/rxrpc/ar-proc.c

DEFINITIONS

1. rxrpc_call_seq_start
2. rxrpc_call_seq_next
3. rxrpc_call_seq_stop
4. rxrpc_call_seq_show
5. rxrpc_call_seq_open
6. rxrpc_connection_seq_start
7. rxrpc_connection_seq_next
8. rxrpc_connection_seq_stop
9. rxrpc_connection_seq_show
10. rxrpc_connection_seq_open

/* /proc/net/ support for AF_RXRPC
 *
 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */

#include <linux/module.h>
#include <net/sock.h>
#include <net/af_rxrpc.h>
#include "ar-internal.h"

static const char *const rxrpc_conn_states[] = {
        [RXRPC_CONN_UNUSED]             = "Unused  ",
        [RXRPC_CONN_CLIENT]             = "Client  ",
        [RXRPC_CONN_SERVER_UNSECURED]   = "SvUnsec ",
        [RXRPC_CONN_SERVER_CHALLENGING] = "SvChall ",
        [RXRPC_CONN_SERVER]             = "SvSecure",
        [RXRPC_CONN_REMOTELY_ABORTED]   = "RmtAbort",
        [RXRPC_CONN_LOCALLY_ABORTED]    = "LocAbort",
        [RXRPC_CONN_NETWORK_ERROR]      = "NetError",
};

/*
 * generate a list of extant and dead calls in /proc/net/rxrpc_calls
 */
static void *rxrpc_call_seq_start(struct seq_file *seq, loff_t *_pos)
{
        read_lock(&rxrpc_call_lock);
        return seq_list_start_head(&rxrpc_calls, *_pos);
}

static void *rxrpc_call_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
        return seq_list_next(v, &rxrpc_calls, pos);
}

static void rxrpc_call_seq_stop(struct seq_file *seq, void *v)
{
        read_unlock(&rxrpc_call_lock);
}

static int rxrpc_call_seq_show(struct seq_file *seq, void *v)
{
        struct rxrpc_transport *trans;
        struct rxrpc_call *call;
        char lbuff[4 + 4 + 4 + 4 + 5 + 1], rbuff[4 + 4 + 4 + 4 + 5 + 1];

        if (v == &rxrpc_calls) {
                seq_puts(seq,
                         "Proto Local                  Remote                "
                         " SvID ConnID   CallID   End Use State    Abort   "
                         " UserID\n");
                return 0;
        }

        call = list_entry(v, struct rxrpc_call, link);
        trans = call->conn->trans;

        sprintf(lbuff, NIPQUAD_FMT":%u",
                NIPQUAD(trans->local->srx.transport.sin.sin_addr),
                ntohs(trans->local->srx.transport.sin.sin_port));

        sprintf(rbuff, NIPQUAD_FMT":%u",
                NIPQUAD(trans->peer->srx.transport.sin.sin_addr),
                ntohs(trans->peer->srx.transport.sin.sin_port));

        seq_printf(seq,
                   "UDP   %-22.22s %-22.22s %4x %08x %08x %s %3u"
                   " %-8.8s %08x %lx\n",
                   lbuff,
                   rbuff,
                   ntohs(call->conn->service_id),
                   ntohl(call->conn->cid),
                   ntohl(call->call_id),
                   call->conn->in_clientflag ? "Svc" : "Clt",
                   atomic_read(&call->usage),
                   rxrpc_call_states[call->state],
                   call->abort_code,
                   call->user_call_ID);

        return 0;
}

static const struct seq_operations rxrpc_call_seq_ops = {
        .start  = rxrpc_call_seq_start,
        .next   = rxrpc_call_seq_next,
        .stop   = rxrpc_call_seq_stop,
        .show   = rxrpc_call_seq_show,
};

static int rxrpc_call_seq_open(struct inode *inode, struct file *file)
{
        return seq_open(file, &rxrpc_call_seq_ops);
}

const struct file_operations rxrpc_call_seq_fops = {
        .owner          = THIS_MODULE,
        .open           = rxrpc_call_seq_open,
        .read           = seq_read,
        .llseek         = seq_lseek,
        .release        = seq_release,
};

/*
 * generate a list of extant virtual connections in /proc/net/rxrpc_conns
 */
static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos)
{
        read_lock(&rxrpc_connection_lock);
        return seq_list_start_head(&rxrpc_connections, *_pos);
}

static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v,
                                       loff_t *pos)
{
        return seq_list_next(v, &rxrpc_connections, pos);
}

static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v)
{
        read_unlock(&rxrpc_connection_lock);
}

static int rxrpc_connection_seq_show(struct seq_file *seq, void *v)
{
        struct rxrpc_connection *conn;
        struct rxrpc_transport *trans;
        char lbuff[4 + 4 + 4 + 4 + 5 + 1], rbuff[4 + 4 + 4 + 4 + 5 + 1];

        if (v == &rxrpc_connections) {
                seq_puts(seq,
                         "Proto Local                  Remote                "
                         " SvID ConnID   Calls    End Use State    Key     "
                         " Serial   ISerial\n"
                         );
                return 0;
        }

        conn = list_entry(v, struct rxrpc_connection, link);
        trans = conn->trans;

        sprintf(lbuff, NIPQUAD_FMT":%u",
                NIPQUAD(trans->local->srx.transport.sin.sin_addr),
                ntohs(trans->local->srx.transport.sin.sin_port));

        sprintf(rbuff, NIPQUAD_FMT":%u",
                NIPQUAD(trans->peer->srx.transport.sin.sin_addr),
                ntohs(trans->peer->srx.transport.sin.sin_port));

        seq_printf(seq,
                   "UDP   %-22.22s %-22.22s %4x %08x %08x %s %3u"
                   " %s %08x %08x %08x\n",
                   lbuff,
                   rbuff,
                   ntohs(conn->service_id),
                   ntohl(conn->cid),
                   conn->call_counter,
                   conn->in_clientflag ? "Svc" : "Clt",
                   atomic_read(&conn->usage),
                   rxrpc_conn_states[conn->state],
                   key_serial(conn->key),
                   atomic_read(&conn->serial),
                   atomic_read(&conn->hi_serial));

        return 0;
}

static const struct seq_operations rxrpc_connection_seq_ops = {
        .start  = rxrpc_connection_seq_start,
        .next   = rxrpc_connection_seq_next,
        .stop   = rxrpc_connection_seq_stop,
        .show   = rxrpc_connection_seq_show,
};


static int rxrpc_connection_seq_open(struct inode *inode, struct file *file)
{
        return seq_open(file, &rxrpc_connection_seq_ops);
}

const struct file_operations rxrpc_connection_seq_fops = {
        .owner          = THIS_MODULE,
        .open           = rxrpc_connection_seq_open,
        .read           = seq_read,
        .llseek         = seq_lseek,
        .release        = seq_release,
};