diff options
Diffstat (limited to 'net/llc/llc_proc.c')
| -rw-r--r-- | net/llc/llc_proc.c | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/net/llc/llc_proc.c b/net/llc/llc_proc.c new file mode 100644 index 0000000..48212c0 --- /dev/null +++ b/net/llc/llc_proc.c @@ -0,0 +1,265 @@ +/* + * 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/init.h> +#include <linux/kernel.h> +#include <linux/proc_fs.h> +#include <linux/errno.h> +#include <linux/seq_file.h> +#include <net/net_namespace.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, u8 *addr) +{ + DECLARE_MAC_BUF(mac); + seq_printf(seq, "%s", print_mac(mac, addr)); +} + +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 { + u8 addr[6] = {0,0,0,0,0,0}; + llc_ui_format_mac(seq, addr); + } + 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) - llc->copied_seq, + 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 const 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 const 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 const 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 const 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", init_net.proc_net); + if (!llc_proc_dir) + goto out; + llc_proc_dir->owner = THIS_MODULE; + + p = proc_create("socket", S_IRUGO, llc_proc_dir, &llc_seq_socket_fops); + if (!p) + goto out_socket; + + p = proc_create("core", S_IRUGO, llc_proc_dir, &llc_seq_core_fops); + if (!p) + goto out_core; + + rc = 0; +out: + return rc; +out_core: + remove_proc_entry("socket", llc_proc_dir); +out_socket: + remove_proc_entry("llc", init_net.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", init_net.proc_net); +} |
