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-rw-r--r--net/atm/proc.c514
1 files changed, 514 insertions, 0 deletions
diff --git a/net/atm/proc.c b/net/atm/proc.c
new file mode 100644
index 000000000000..4041054e5282
--- /dev/null
+++ b/net/atm/proc.c
@@ -0,0 +1,514 @@
+/* net/atm/proc.c - ATM /proc interface
+ *
+ * Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA
+ *
+ * seq_file api usage by romieu@fr.zoreil.com
+ *
+ * Evaluating the efficiency of the whole thing if left as an exercise to
+ * the reader.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h> /* for EXPORT_SYMBOL */
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/fs.h>
+#include <linux/stat.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/errno.h>
+#include <linux/atm.h>
+#include <linux/atmdev.h>
+#include <linux/netdevice.h>
+#include <linux/atmclip.h>
+#include <linux/init.h> /* for __init */
+#include <net/atmclip.h>
+#include <asm/uaccess.h>
+#include <asm/atomic.h>
+#include <asm/param.h> /* for HZ */
+#include "resources.h"
+#include "common.h" /* atm_proc_init prototype */
+#include "signaling.h" /* to get sigd - ugly too */
+
+static ssize_t proc_dev_atm_read(struct file *file,char __user *buf,size_t count,
+ loff_t *pos);
+
+static struct file_operations proc_atm_dev_ops = {
+ .owner = THIS_MODULE,
+ .read = proc_dev_atm_read,
+};
+
+static void add_stats(struct seq_file *seq, const char *aal,
+ const struct k_atm_aal_stats *stats)
+{
+ seq_printf(seq, "%s ( %d %d %d %d %d )", aal,
+ atomic_read(&stats->tx),atomic_read(&stats->tx_err),
+ atomic_read(&stats->rx),atomic_read(&stats->rx_err),
+ atomic_read(&stats->rx_drop));
+}
+
+static void atm_dev_info(struct seq_file *seq, const struct atm_dev *dev)
+{
+ int i;
+
+ seq_printf(seq, "%3d %-8s", dev->number, dev->type);
+ for (i = 0; i < ESI_LEN; i++)
+ seq_printf(seq, "%02x", dev->esi[i]);
+ seq_puts(seq, " ");
+ add_stats(seq, "0", &dev->stats.aal0);
+ seq_puts(seq, " ");
+ add_stats(seq, "5", &dev->stats.aal5);
+ seq_printf(seq, "\t[%d]", atomic_read(&dev->refcnt));
+ seq_putc(seq, '\n');
+}
+
+struct vcc_state {
+ int bucket;
+ struct sock *sk;
+ int family;
+};
+
+static inline int compare_family(struct sock *sk, int family)
+{
+ return !family || (sk->sk_family == family);
+}
+
+static int __vcc_walk(struct sock **sock, int family, int *bucket, loff_t l)
+{
+ struct sock *sk = *sock;
+
+ if (sk == (void *)1) {
+ for (*bucket = 0; *bucket < VCC_HTABLE_SIZE; ++*bucket) {
+ struct hlist_head *head = &vcc_hash[*bucket];
+
+ sk = hlist_empty(head) ? NULL : __sk_head(head);
+ if (sk)
+ break;
+ }
+ l--;
+ }
+try_again:
+ for (; sk; sk = sk_next(sk)) {
+ l -= compare_family(sk, family);
+ if (l < 0)
+ goto out;
+ }
+ if (!sk && ++*bucket < VCC_HTABLE_SIZE) {
+ sk = sk_head(&vcc_hash[*bucket]);
+ goto try_again;
+ }
+ sk = (void *)1;
+out:
+ *sock = sk;
+ return (l < 0);
+}
+
+static inline void *vcc_walk(struct vcc_state *state, loff_t l)
+{
+ return __vcc_walk(&state->sk, state->family, &state->bucket, l) ?
+ state : NULL;
+}
+
+static int __vcc_seq_open(struct inode *inode, struct file *file,
+ int family, struct seq_operations *ops)
+{
+ struct vcc_state *state;
+ struct seq_file *seq;
+ int rc = -ENOMEM;
+
+ state = kmalloc(sizeof(*state), GFP_KERNEL);
+ if (!state)
+ goto out;
+
+ rc = seq_open(file, ops);
+ if (rc)
+ goto out_kfree;
+
+ state->family = family;
+
+ seq = file->private_data;
+ seq->private = state;
+out:
+ return rc;
+out_kfree:
+ kfree(state);
+ goto out;
+}
+
+static int vcc_seq_release(struct inode *inode, struct file *file)
+{
+ return seq_release_private(inode, file);
+}
+
+static void *vcc_seq_start(struct seq_file *seq, loff_t *pos)
+{
+ struct vcc_state *state = seq->private;
+ loff_t left = *pos;
+
+ read_lock(&vcc_sklist_lock);
+ state->sk = (void *)1;
+ return left ? vcc_walk(state, left) : (void *)1;
+}
+
+static void vcc_seq_stop(struct seq_file *seq, void *v)
+{
+ read_unlock(&vcc_sklist_lock);
+}
+
+static void *vcc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ struct vcc_state *state = seq->private;
+
+ v = vcc_walk(state, 1);
+ *pos += !!PTR_ERR(v);
+ return v;
+}
+
+static void pvc_info(struct seq_file *seq, struct atm_vcc *vcc)
+{
+ static const char *class_name[] = { "off","UBR","CBR","VBR","ABR" };
+ static const char *aal_name[] = {
+ "---", "1", "2", "3/4", /* 0- 3 */
+ "???", "5", "???", "???", /* 4- 7 */
+ "???", "???", "???", "???", /* 8-11 */
+ "???", "0", "???", "???"}; /* 12-15 */
+
+ seq_printf(seq, "%3d %3d %5d %-3s %7d %-5s %7d %-6s",
+ vcc->dev->number,vcc->vpi,vcc->vci,
+ vcc->qos.aal >= sizeof(aal_name)/sizeof(aal_name[0]) ? "err" :
+ aal_name[vcc->qos.aal],vcc->qos.rxtp.min_pcr,
+ class_name[vcc->qos.rxtp.traffic_class],vcc->qos.txtp.min_pcr,
+ class_name[vcc->qos.txtp.traffic_class]);
+ if (test_bit(ATM_VF_IS_CLIP, &vcc->flags)) {
+ struct clip_vcc *clip_vcc = CLIP_VCC(vcc);
+ struct net_device *dev;
+
+ dev = clip_vcc->entry ? clip_vcc->entry->neigh->dev : NULL;
+ seq_printf(seq, "CLIP, Itf:%s, Encap:",
+ dev ? dev->name : "none?");
+ seq_printf(seq, "%s", clip_vcc->encap ? "LLC/SNAP" : "None");
+ }
+ seq_putc(seq, '\n');
+}
+
+static const char *vcc_state(struct atm_vcc *vcc)
+{
+ static const char *map[] = { ATM_VS2TXT_MAP };
+
+ return map[ATM_VF2VS(vcc->flags)];
+}
+
+static void vcc_info(struct seq_file *seq, struct atm_vcc *vcc)
+{
+ struct sock *sk = sk_atm(vcc);
+
+ seq_printf(seq, "%p ", vcc);
+ if (!vcc->dev)
+ seq_printf(seq, "Unassigned ");
+ else
+ seq_printf(seq, "%3d %3d %5d ", vcc->dev->number, vcc->vpi,
+ vcc->vci);
+ switch (sk->sk_family) {
+ case AF_ATMPVC:
+ seq_printf(seq, "PVC");
+ break;
+ case AF_ATMSVC:
+ seq_printf(seq, "SVC");
+ break;
+ default:
+ seq_printf(seq, "%3d", sk->sk_family);
+ }
+ seq_printf(seq, " %04lx %5d %7d/%7d %7d/%7d [%d]\n", vcc->flags, sk->sk_err,
+ atomic_read(&sk->sk_wmem_alloc), sk->sk_sndbuf,
+ atomic_read(&sk->sk_rmem_alloc), sk->sk_rcvbuf,
+ atomic_read(&sk->sk_refcnt));
+}
+
+static void svc_info(struct seq_file *seq, struct atm_vcc *vcc)
+{
+ if (!vcc->dev)
+ seq_printf(seq, sizeof(void *) == 4 ?
+ "N/A@%p%10s" : "N/A@%p%2s", vcc, "");
+ else
+ seq_printf(seq, "%3d %3d %5d ",
+ vcc->dev->number, vcc->vpi, vcc->vci);
+ seq_printf(seq, "%-10s ", vcc_state(vcc));
+ seq_printf(seq, "%s%s", vcc->remote.sas_addr.pub,
+ *vcc->remote.sas_addr.pub && *vcc->remote.sas_addr.prv ? "+" : "");
+ if (*vcc->remote.sas_addr.prv) {
+ int i;
+
+ for (i = 0; i < ATM_ESA_LEN; i++)
+ seq_printf(seq, "%02x", vcc->remote.sas_addr.prv[i]);
+ }
+ seq_putc(seq, '\n');
+}
+
+static int atm_dev_seq_show(struct seq_file *seq, void *v)
+{
+ static char atm_dev_banner[] =
+ "Itf Type ESI/\"MAC\"addr "
+ "AAL(TX,err,RX,err,drop) ... [refcnt]\n";
+
+ if (v == (void *)1)
+ seq_puts(seq, atm_dev_banner);
+ else {
+ struct atm_dev *dev = list_entry(v, struct atm_dev, dev_list);
+
+ atm_dev_info(seq, dev);
+ }
+ return 0;
+}
+
+static struct seq_operations atm_dev_seq_ops = {
+ .start = atm_dev_seq_start,
+ .next = atm_dev_seq_next,
+ .stop = atm_dev_seq_stop,
+ .show = atm_dev_seq_show,
+};
+
+static int atm_dev_seq_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &atm_dev_seq_ops);
+}
+
+static struct file_operations devices_seq_fops = {
+ .open = atm_dev_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+static int pvc_seq_show(struct seq_file *seq, void *v)
+{
+ static char atm_pvc_banner[] =
+ "Itf VPI VCI AAL RX(PCR,Class) TX(PCR,Class)\n";
+
+ if (v == (void *)1)
+ seq_puts(seq, atm_pvc_banner);
+ else {
+ struct vcc_state *state = seq->private;
+ struct atm_vcc *vcc = atm_sk(state->sk);
+
+ pvc_info(seq, vcc);
+ }
+ return 0;
+}
+
+static struct seq_operations pvc_seq_ops = {
+ .start = vcc_seq_start,
+ .next = vcc_seq_next,
+ .stop = vcc_seq_stop,
+ .show = pvc_seq_show,
+};
+
+static int pvc_seq_open(struct inode *inode, struct file *file)
+{
+ return __vcc_seq_open(inode, file, PF_ATMPVC, &pvc_seq_ops);
+}
+
+static struct file_operations pvc_seq_fops = {
+ .open = pvc_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = vcc_seq_release,
+};
+
+static int vcc_seq_show(struct seq_file *seq, void *v)
+{
+ if (v == (void *)1) {
+ seq_printf(seq, sizeof(void *) == 4 ? "%-8s%s" : "%-16s%s",
+ "Address ", "Itf VPI VCI Fam Flags Reply "
+ "Send buffer Recv buffer [refcnt]\n");
+ } else {
+ struct vcc_state *state = seq->private;
+ struct atm_vcc *vcc = atm_sk(state->sk);
+
+ vcc_info(seq, vcc);
+ }
+ return 0;
+}
+
+static struct seq_operations vcc_seq_ops = {
+ .start = vcc_seq_start,
+ .next = vcc_seq_next,
+ .stop = vcc_seq_stop,
+ .show = vcc_seq_show,
+};
+
+static int vcc_seq_open(struct inode *inode, struct file *file)
+{
+ return __vcc_seq_open(inode, file, 0, &vcc_seq_ops);
+}
+
+static struct file_operations vcc_seq_fops = {
+ .open = vcc_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = vcc_seq_release,
+};
+
+static int svc_seq_show(struct seq_file *seq, void *v)
+{
+ static char atm_svc_banner[] =
+ "Itf VPI VCI State Remote\n";
+
+ if (v == (void *)1)
+ seq_puts(seq, atm_svc_banner);
+ else {
+ struct vcc_state *state = seq->private;
+ struct atm_vcc *vcc = atm_sk(state->sk);
+
+ svc_info(seq, vcc);
+ }
+ return 0;
+}
+
+static struct seq_operations svc_seq_ops = {
+ .start = vcc_seq_start,
+ .next = vcc_seq_next,
+ .stop = vcc_seq_stop,
+ .show = svc_seq_show,
+};
+
+static int svc_seq_open(struct inode *inode, struct file *file)
+{
+ return __vcc_seq_open(inode, file, PF_ATMSVC, &svc_seq_ops);
+}
+
+static struct file_operations svc_seq_fops = {
+ .open = svc_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = vcc_seq_release,
+};
+
+static ssize_t proc_dev_atm_read(struct file *file, char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct atm_dev *dev;
+ unsigned long page;
+ int length;
+
+ if (count == 0) return 0;
+ page = get_zeroed_page(GFP_KERNEL);
+ if (!page) return -ENOMEM;
+ dev = PDE(file->f_dentry->d_inode)->data;
+ if (!dev->ops->proc_read)
+ length = -EINVAL;
+ else {
+ length = dev->ops->proc_read(dev,pos,(char *) page);
+ if (length > count) length = -EINVAL;
+ }
+ if (length >= 0) {
+ if (copy_to_user(buf,(char *) page,length)) length = -EFAULT;
+ (*pos)++;
+ }
+ free_page(page);
+ return length;
+}
+
+
+struct proc_dir_entry *atm_proc_root;
+EXPORT_SYMBOL(atm_proc_root);
+
+
+int atm_proc_dev_register(struct atm_dev *dev)
+{
+ int digits,num;
+ int error;
+
+ /* No proc info */
+ if (!dev->ops->proc_read)
+ return 0;
+
+ error = -ENOMEM;
+ digits = 0;
+ for (num = dev->number; num; num /= 10) digits++;
+ if (!digits) digits++;
+
+ dev->proc_name = kmalloc(strlen(dev->type) + digits + 2, GFP_KERNEL);
+ if (!dev->proc_name)
+ goto err_out;
+ sprintf(dev->proc_name,"%s:%d",dev->type, dev->number);
+
+ dev->proc_entry = create_proc_entry(dev->proc_name, 0, atm_proc_root);
+ if (!dev->proc_entry)
+ goto err_free_name;
+ dev->proc_entry->data = dev;
+ dev->proc_entry->proc_fops = &proc_atm_dev_ops;
+ dev->proc_entry->owner = THIS_MODULE;
+ return 0;
+err_free_name:
+ kfree(dev->proc_name);
+err_out:
+ return error;
+}
+
+
+void atm_proc_dev_deregister(struct atm_dev *dev)
+{
+ if (!dev->ops->proc_read)
+ return;
+
+ remove_proc_entry(dev->proc_name, atm_proc_root);
+ kfree(dev->proc_name);
+}
+
+static struct atm_proc_entry {
+ char *name;
+ struct file_operations *proc_fops;
+ struct proc_dir_entry *dirent;
+} atm_proc_ents[] = {
+ { .name = "devices", .proc_fops = &devices_seq_fops },
+ { .name = "pvc", .proc_fops = &pvc_seq_fops },
+ { .name = "svc", .proc_fops = &svc_seq_fops },
+ { .name = "vc", .proc_fops = &vcc_seq_fops },
+ { .name = NULL, .proc_fops = NULL }
+};
+
+static void atm_proc_dirs_remove(void)
+{
+ static struct atm_proc_entry *e;
+
+ for (e = atm_proc_ents; e->name; e++) {
+ if (e->dirent)
+ remove_proc_entry(e->name, atm_proc_root);
+ }
+ remove_proc_entry("net/atm", NULL);
+}
+
+int __init atm_proc_init(void)
+{
+ static struct atm_proc_entry *e;
+ int ret;
+
+ atm_proc_root = proc_mkdir("net/atm",NULL);
+ if (!atm_proc_root)
+ goto err_out;
+ for (e = atm_proc_ents; e->name; e++) {
+ struct proc_dir_entry *dirent;
+
+ dirent = create_proc_entry(e->name, S_IRUGO, atm_proc_root);
+ if (!dirent)
+ goto err_out_remove;
+ dirent->proc_fops = e->proc_fops;
+ dirent->owner = THIS_MODULE;
+ e->dirent = dirent;
+ }
+ ret = 0;
+out:
+ return ret;
+
+err_out_remove:
+ atm_proc_dirs_remove();
+err_out:
+ ret = -ENOMEM;
+ goto out;
+}
+
+void __exit atm_proc_exit(void)
+{
+ atm_proc_dirs_remove();
+}