2 * proc_llc.c - proc interface for LLC
4 * Copyright (c) 2001 by Jay Schulist <jschlst@samba.org>
5 * 2002-2003 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
7 * This program can be redistributed or modified under the terms of the
8 * GNU General Public License as published by the Free Software Foundation.
9 * This program is distributed without any warranty or implied warranty
10 * of merchantability or fitness for a particular purpose.
12 * See the GNU General Public License for more details.
15 #include <linux/init.h>
16 #include <linux/kernel.h>
17 #include <linux/proc_fs.h>
18 #include <linux/errno.h>
19 #include <linux/seq_file.h>
20 #include <net/net_namespace.h>
23 #include <net/llc_c_ac.h>
24 #include <net/llc_c_ev.h>
25 #include <net/llc_c_st.h>
26 #include <net/llc_conn.h>
28 static void llc_ui_format_mac(struct seq_file
*seq
, u8
*addr
)
30 seq_printf(seq
, "%pM", addr
);
33 static struct sock
*llc_get_sk_idx(loff_t pos
)
35 struct list_head
*sap_entry
;
37 struct hlist_node
*node
;
38 struct sock
*sk
= NULL
;
40 list_for_each(sap_entry
, &llc_sap_list
) {
41 sap
= list_entry(sap_entry
, struct llc_sap
, node
);
43 read_lock_bh(&sap
->sk_list
.lock
);
44 sk_for_each(sk
, node
, &sap
->sk_list
.list
) {
49 read_unlock_bh(&sap
->sk_list
.lock
);
56 static void *llc_seq_start(struct seq_file
*seq
, loff_t
*pos
)
60 read_lock_bh(&llc_sap_list_lock
);
61 return l
? llc_get_sk_idx(--l
) : SEQ_START_TOKEN
;
64 static void *llc_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
66 struct sock
* sk
, *next
;
71 if (v
== SEQ_START_TOKEN
) {
72 sk
= llc_get_sk_idx(0);
83 read_unlock_bh(&sap
->sk_list
.lock
);
86 if (sap
->node
.next
== &llc_sap_list
)
88 sap
= list_entry(sap
->node
.next
, struct llc_sap
, node
);
89 read_lock_bh(&sap
->sk_list
.lock
);
90 if (!hlist_empty(&sap
->sk_list
.list
)) {
91 sk
= sk_head(&sap
->sk_list
.list
);
94 read_unlock_bh(&sap
->sk_list
.lock
);
100 static void llc_seq_stop(struct seq_file
*seq
, void *v
)
102 if (v
&& v
!= SEQ_START_TOKEN
) {
104 struct llc_sock
*llc
= llc_sk(sk
);
105 struct llc_sap
*sap
= llc
->sap
;
107 read_unlock_bh(&sap
->sk_list
.lock
);
109 read_unlock_bh(&llc_sap_list_lock
);
112 static int llc_seq_socket_show(struct seq_file
*seq
, void *v
)
115 struct llc_sock
*llc
;
117 if (v
== SEQ_START_TOKEN
) {
118 seq_puts(seq
, "SKt Mc local_mac_sap remote_mac_sap "
119 " tx_queue rx_queue st uid link\n");
125 /* FIXME: check if the address is multicast */
126 seq_printf(seq
, "%2X %2X ", sk
->sk_type
, 0);
129 llc_ui_format_mac(seq
, llc
->dev
->dev_addr
);
131 u8 addr
[6] = {0,0,0,0,0,0};
132 llc_ui_format_mac(seq
, addr
);
134 seq_printf(seq
, "@%02X ", llc
->sap
->laddr
.lsap
);
135 llc_ui_format_mac(seq
, llc
->daddr
.mac
);
136 seq_printf(seq
, "@%02X %8d %8d %2d %3d %4d\n", llc
->daddr
.lsap
,
137 atomic_read(&sk
->sk_wmem_alloc
),
138 atomic_read(&sk
->sk_rmem_alloc
) - llc
->copied_seq
,
140 sk
->sk_socket
? SOCK_INODE(sk
->sk_socket
)->i_uid
: -1,
146 static char *llc_conn_state_names
[] = {
147 [LLC_CONN_STATE_ADM
] = "adm",
148 [LLC_CONN_STATE_SETUP
] = "setup",
149 [LLC_CONN_STATE_NORMAL
] = "normal",
150 [LLC_CONN_STATE_BUSY
] = "busy",
151 [LLC_CONN_STATE_REJ
] = "rej",
152 [LLC_CONN_STATE_AWAIT
] = "await",
153 [LLC_CONN_STATE_AWAIT_BUSY
] = "await_busy",
154 [LLC_CONN_STATE_AWAIT_REJ
] = "await_rej",
155 [LLC_CONN_STATE_D_CONN
] = "d_conn",
156 [LLC_CONN_STATE_RESET
] = "reset",
157 [LLC_CONN_STATE_ERROR
] = "error",
158 [LLC_CONN_STATE_TEMP
] = "temp",
161 static int llc_seq_core_show(struct seq_file
*seq
, void *v
)
164 struct llc_sock
*llc
;
166 if (v
== SEQ_START_TOKEN
) {
167 seq_puts(seq
, "Connection list:\n"
168 "dsap state retr txw rxw pf ff sf df rs cs "
169 "tack tpfc trs tbs blog busr\n");
175 seq_printf(seq
, " %02X %-10s %3d %3d %3d %2d %2d %2d %2d %2d %2d "
176 "%4d %4d %3d %3d %4d %4d\n",
177 llc
->daddr
.lsap
, llc_conn_state_names
[llc
->state
],
178 llc
->retry_count
, llc
->k
, llc
->rw
, llc
->p_flag
, llc
->f_flag
,
179 llc
->s_flag
, llc
->data_flag
, llc
->remote_busy_flag
,
180 llc
->cause_flag
, timer_pending(&llc
->ack_timer
.timer
),
181 timer_pending(&llc
->pf_cycle_timer
.timer
),
182 timer_pending(&llc
->rej_sent_timer
.timer
),
183 timer_pending(&llc
->busy_state_timer
.timer
),
184 !!sk
->sk_backlog
.tail
, !!sock_owned_by_user(sk
));
189 static const struct seq_operations llc_seq_socket_ops
= {
190 .start
= llc_seq_start
,
191 .next
= llc_seq_next
,
192 .stop
= llc_seq_stop
,
193 .show
= llc_seq_socket_show
,
196 static const struct seq_operations llc_seq_core_ops
= {
197 .start
= llc_seq_start
,
198 .next
= llc_seq_next
,
199 .stop
= llc_seq_stop
,
200 .show
= llc_seq_core_show
,
203 static int llc_seq_socket_open(struct inode
*inode
, struct file
*file
)
205 return seq_open(file
, &llc_seq_socket_ops
);
208 static int llc_seq_core_open(struct inode
*inode
, struct file
*file
)
210 return seq_open(file
, &llc_seq_core_ops
);
213 static const struct file_operations llc_seq_socket_fops
= {
214 .owner
= THIS_MODULE
,
215 .open
= llc_seq_socket_open
,
218 .release
= seq_release
,
221 static const struct file_operations llc_seq_core_fops
= {
222 .owner
= THIS_MODULE
,
223 .open
= llc_seq_core_open
,
226 .release
= seq_release
,
229 static struct proc_dir_entry
*llc_proc_dir
;
231 int __init
llc_proc_init(void)
234 struct proc_dir_entry
*p
;
236 llc_proc_dir
= proc_mkdir("llc", init_net
.proc_net
);
240 p
= proc_create("socket", S_IRUGO
, llc_proc_dir
, &llc_seq_socket_fops
);
244 p
= proc_create("core", S_IRUGO
, llc_proc_dir
, &llc_seq_core_fops
);
252 remove_proc_entry("socket", llc_proc_dir
);
254 remove_proc_entry("llc", init_net
.proc_net
);
258 void llc_proc_exit(void)
260 remove_proc_entry("socket", llc_proc_dir
);
261 remove_proc_entry("core", llc_proc_dir
);
262 remove_proc_entry("llc", init_net
.proc_net
);