1 files changed, 267 insertions, 0 deletions

diff --git a/net/llc/llc_proc.c b/net/llc/llc_proc.c
new file mode 100644
index 000000000000..36e8db3fa1a2
--- /dev/null
+++ b/net/llc/llc_proc.c
@@ -0,0 +1,267 @@
+/*
+ * proc_llc.c - proc interface for LLC
+ *
+ * Copyright (c) 2001 by Jay Schulist <jschlst@samba.org>
+ *               2002-2003 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+ *
+ * This program can be redistributed or modified under the terms of the
+ * GNU General Public License as published by the Free Software Foundation.
+ * This program is distributed without any warranty or implied warranty
+ * of merchantability or fitness for a particular purpose.
+ *
+ * See the GNU General Public License for more details.
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/proc_fs.h>
+#include <linux/errno.h>
+#include <linux/seq_file.h>
+#include <net/sock.h>
+#include <net/llc.h>
+#include <net/llc_c_ac.h>
+#include <net/llc_c_ev.h>
+#include <net/llc_c_st.h>
+#include <net/llc_conn.h>
+
+static void llc_ui_format_mac(struct seq_file *seq, unsigned char *mac)
+{
+        seq_printf(seq, "%02X:%02X:%02X:%02X:%02X:%02X",
+                   mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
+}
+
+static struct sock *llc_get_sk_idx(loff_t pos)
+{
+        struct list_head *sap_entry;
+        struct llc_sap *sap;
+        struct hlist_node *node;
+        struct sock *sk = NULL;
+
+        list_for_each(sap_entry, &llc_sap_list) {
+                sap = list_entry(sap_entry, struct llc_sap, node);
+
+                read_lock_bh(&sap->sk_list.lock);
+                sk_for_each(sk, node, &sap->sk_list.list) {
+                        if (!pos)
+                                goto found;
+                        --pos;
+                }
+                read_unlock_bh(&sap->sk_list.lock);
+        }
+        sk = NULL;
+found:
+        return sk;
+}
+
+static void *llc_seq_start(struct seq_file *seq, loff_t *pos)
+{
+        loff_t l = *pos;
+
+        read_lock_bh(&llc_sap_list_lock);
+        return l ? llc_get_sk_idx(--l) : SEQ_START_TOKEN;
+}
+
+static void *llc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+        struct sock* sk, *next;
+        struct llc_sock *llc;
+        struct llc_sap *sap;
+
+        ++*pos;
+        if (v == SEQ_START_TOKEN) {
+                sk = llc_get_sk_idx(0);
+                goto out;
+        }
+        sk = v;
+        next = sk_next(sk);
+        if (next) {
+                sk = next;
+                goto out;
+        }
+        llc = llc_sk(sk);
+        sap = llc->sap;
+        read_unlock_bh(&sap->sk_list.lock);
+        sk = NULL;
+        for (;;) {
+                if (sap->node.next == &llc_sap_list)
+                        break;
+                sap = list_entry(sap->node.next, struct llc_sap, node);
+                read_lock_bh(&sap->sk_list.lock);
+                if (!hlist_empty(&sap->sk_list.list)) {
+                        sk = sk_head(&sap->sk_list.list);
+                        break;
+                }
+                read_unlock_bh(&sap->sk_list.lock);
+        }
+out:
+        return sk;
+}
+
+static void llc_seq_stop(struct seq_file *seq, void *v)
+{
+        if (v && v != SEQ_START_TOKEN) {
+                struct sock *sk = v;
+                struct llc_sock *llc = llc_sk(sk);
+                struct llc_sap *sap = llc->sap;
+
+                read_unlock_bh(&sap->sk_list.lock);
+        }
+        read_unlock_bh(&llc_sap_list_lock);
+}
+
+static int llc_seq_socket_show(struct seq_file *seq, void *v)
+{
+        struct sock* sk;
+        struct llc_sock *llc;
+
+        if (v == SEQ_START_TOKEN) {
+                seq_puts(seq, "SKt Mc local_mac_sap        remote_mac_sap   "
+                              "    tx_queue rx_queue st uid link\n");
+                goto out;
+        }
+        sk = v;
+        llc = llc_sk(sk);
+
+        /* FIXME: check if the address is multicast */
+        seq_printf(seq, "%2X  %2X ", sk->sk_type, 0);
+
+        if (llc->dev)
+                llc_ui_format_mac(seq, llc->dev->dev_addr);
+        else
+                seq_printf(seq, "00:00:00:00:00:00");
+        seq_printf(seq, "@%02X ", llc->sap->laddr.lsap);
+        llc_ui_format_mac(seq, llc->daddr.mac);
+        seq_printf(seq, "@%02X %8d %8d %2d %3d %4d\n", llc->daddr.lsap,
+                   atomic_read(&sk->sk_wmem_alloc),
+                   atomic_read(&sk->sk_rmem_alloc),
+                   sk->sk_state,
+                   sk->sk_socket ? SOCK_INODE(sk->sk_socket)->i_uid : -1,
+                   llc->link);
+out:
+        return 0;
+}
+
+static char *llc_conn_state_names[] = {
+        [LLC_CONN_STATE_ADM] =        "adm", 
+        [LLC_CONN_STATE_SETUP] =      "setup", 
+        [LLC_CONN_STATE_NORMAL] =     "normal",
+        [LLC_CONN_STATE_BUSY] =       "busy", 
+        [LLC_CONN_STATE_REJ] =        "rej", 
+        [LLC_CONN_STATE_AWAIT] =      "await", 
+        [LLC_CONN_STATE_AWAIT_BUSY] = "await_busy",
+        [LLC_CONN_STATE_AWAIT_REJ] =  "await_rej",
+        [LLC_CONN_STATE_D_CONN] =     "d_conn",
+        [LLC_CONN_STATE_RESET] =      "reset", 
+        [LLC_CONN_STATE_ERROR] =      "error", 
+        [LLC_CONN_STATE_TEMP] =       "temp", 
+};
+
+static int llc_seq_core_show(struct seq_file *seq, void *v)
+{
+        struct sock* sk;
+        struct llc_sock *llc;
+
+        if (v == SEQ_START_TOKEN) {
+                seq_puts(seq, "Connection list:\n"
+                              "dsap state      retr txw rxw pf ff sf df rs cs "
+                              "tack tpfc trs tbs blog busr\n");
+                goto out;
+        }
+        sk = v;
+        llc = llc_sk(sk);
+
+        seq_printf(seq, " %02X  %-10s %3d  %3d %3d %2d %2d %2d %2d %2d %2d "
+                        "%4d %4d %3d %3d %4d %4d\n",
+                   llc->daddr.lsap, llc_conn_state_names[llc->state],
+                   llc->retry_count, llc->k, llc->rw, llc->p_flag, llc->f_flag,
+                   llc->s_flag, llc->data_flag, llc->remote_busy_flag,
+                   llc->cause_flag, timer_pending(&llc->ack_timer.timer),
+                   timer_pending(&llc->pf_cycle_timer.timer),
+                   timer_pending(&llc->rej_sent_timer.timer),
+                   timer_pending(&llc->busy_state_timer.timer),
+                   !!sk->sk_backlog.tail, !!sock_owned_by_user(sk));
+out:
+        return 0;
+}
+
+static struct seq_operations llc_seq_socket_ops = {
+        .start  = llc_seq_start,
+        .next   = llc_seq_next,
+        .stop   = llc_seq_stop,
+        .show   = llc_seq_socket_show,
+};
+
+static struct seq_operations llc_seq_core_ops = {
+        .start  = llc_seq_start,
+        .next   = llc_seq_next,
+        .stop   = llc_seq_stop,
+        .show   = llc_seq_core_show,
+};
+
+static int llc_seq_socket_open(struct inode *inode, struct file *file)
+{
+        return seq_open(file, &llc_seq_socket_ops);
+}
+
+static int llc_seq_core_open(struct inode *inode, struct file *file)
+{
+        return seq_open(file, &llc_seq_core_ops);
+}
+
+static struct file_operations llc_seq_socket_fops = {
+        .owner          = THIS_MODULE,
+        .open           = llc_seq_socket_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = seq_release,
+};
+
+static struct file_operations llc_seq_core_fops = {
+        .owner          = THIS_MODULE,
+        .open           = llc_seq_core_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = seq_release,
+};
+
+static struct proc_dir_entry *llc_proc_dir;
+
+int __init llc_proc_init(void)
+{
+        int rc = -ENOMEM;
+        struct proc_dir_entry *p;
+
+        llc_proc_dir = proc_mkdir("llc", proc_net);
+        if (!llc_proc_dir)
+                goto out;
+        llc_proc_dir->owner = THIS_MODULE;
+
+        p = create_proc_entry("socket", S_IRUGO, llc_proc_dir);
+        if (!p)
+                goto out_socket;
+
+        p->proc_fops = &llc_seq_socket_fops;
+
+        p = create_proc_entry("core", S_IRUGO, llc_proc_dir);
+        if (!p)
+                goto out_core;
+
+        p->proc_fops = &llc_seq_core_fops;
+
+        rc = 0;
+out:
+        return rc;
+out_core:
+        remove_proc_entry("socket", llc_proc_dir);
+out_socket:
+        remove_proc_entry("llc", proc_net);
+        goto out;
+}
+
+void llc_proc_exit(void)
+{
+        remove_proc_entry("socket", llc_proc_dir);
+        remove_proc_entry("core", llc_proc_dir);
+        remove_proc_entry("llc", proc_net);
+}