Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
This commit is contained in:
Linus Torvalds
514
net/atm/proc.c
Normal file
514
net/atm/proc.c
Normal file
@ -0,0 +1,514 @@
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/* net/atm/proc.c - ATM /proc interface
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*
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* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA
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*
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* seq_file api usage by romieu@fr.zoreil.com
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*
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* Evaluating the efficiency of the whole thing if left as an exercise to
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* the reader.
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*/
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#include <linux/config.h>
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#include <linux/module.h> /* for EXPORT_SYMBOL */
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#include <linux/string.h>
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#include <linux/types.h>
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#include <linux/mm.h>
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#include <linux/fs.h>
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#include <linux/stat.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <linux/errno.h>
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#include <linux/atm.h>
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#include <linux/atmdev.h>
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#include <linux/netdevice.h>
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#include <linux/atmclip.h>
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#include <linux/init.h> /* for __init */
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#include <net/atmclip.h>
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#include <asm/uaccess.h>
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#include <asm/atomic.h>
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#include <asm/param.h> /* for HZ */
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#include "resources.h"
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#include "common.h" /* atm_proc_init prototype */
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#include "signaling.h" /* to get sigd - ugly too */
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static ssize_t proc_dev_atm_read(struct file *file,char __user *buf,size_t count,
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loff_t *pos);
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static struct file_operations proc_atm_dev_ops = {
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.owner = THIS_MODULE,
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.read = proc_dev_atm_read,
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};
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static void add_stats(struct seq_file *seq, const char *aal,
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const struct k_atm_aal_stats *stats)
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{
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seq_printf(seq, "%s ( %d %d %d %d %d )", aal,
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atomic_read(&stats->tx),atomic_read(&stats->tx_err),
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atomic_read(&stats->rx),atomic_read(&stats->rx_err),
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atomic_read(&stats->rx_drop));
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}
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static void atm_dev_info(struct seq_file *seq, const struct atm_dev *dev)
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{
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int i;
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seq_printf(seq, "%3d %-8s", dev->number, dev->type);
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for (i = 0; i < ESI_LEN; i++)
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seq_printf(seq, "%02x", dev->esi[i]);
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seq_puts(seq, " ");
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add_stats(seq, "0", &dev->stats.aal0);
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seq_puts(seq, " ");
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add_stats(seq, "5", &dev->stats.aal5);
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seq_printf(seq, "\t[%d]", atomic_read(&dev->refcnt));
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seq_putc(seq, '\n');
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}
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struct vcc_state {
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int bucket;
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struct sock *sk;
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int family;
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};
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static inline int compare_family(struct sock *sk, int family)
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{
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return !family || (sk->sk_family == family);
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}
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static int __vcc_walk(struct sock **sock, int family, int *bucket, loff_t l)
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{
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struct sock *sk = *sock;
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if (sk == (void *)1) {
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for (*bucket = 0; *bucket < VCC_HTABLE_SIZE; ++*bucket) {
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struct hlist_head *head = &vcc_hash[*bucket];
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sk = hlist_empty(head) ? NULL : __sk_head(head);
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if (sk)
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break;
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}
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l--;
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}
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try_again:
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for (; sk; sk = sk_next(sk)) {
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l -= compare_family(sk, family);
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if (l < 0)
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goto out;
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}
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if (!sk && ++*bucket < VCC_HTABLE_SIZE) {
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sk = sk_head(&vcc_hash[*bucket]);
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goto try_again;
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}
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sk = (void *)1;
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out:
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*sock = sk;
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return (l < 0);
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}
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static inline void *vcc_walk(struct vcc_state *state, loff_t l)
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{
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return __vcc_walk(&state->sk, state->family, &state->bucket, l) ?
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state : NULL;
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}
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static int __vcc_seq_open(struct inode *inode, struct file *file,
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int family, struct seq_operations *ops)
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{
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struct vcc_state *state;
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struct seq_file *seq;
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int rc = -ENOMEM;
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state = kmalloc(sizeof(*state), GFP_KERNEL);
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if (!state)
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goto out;
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rc = seq_open(file, ops);
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if (rc)
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goto out_kfree;
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state->family = family;
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seq = file->private_data;
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seq->private = state;
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out:
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return rc;
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out_kfree:
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kfree(state);
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goto out;
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}
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static int vcc_seq_release(struct inode *inode, struct file *file)
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{
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return seq_release_private(inode, file);
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}
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static void *vcc_seq_start(struct seq_file *seq, loff_t *pos)
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{
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struct vcc_state *state = seq->private;
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loff_t left = *pos;
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read_lock(&vcc_sklist_lock);
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state->sk = (void *)1;
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return left ? vcc_walk(state, left) : (void *)1;
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}
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static void vcc_seq_stop(struct seq_file *seq, void *v)
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{
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read_unlock(&vcc_sklist_lock);
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}
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static void *vcc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
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{
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struct vcc_state *state = seq->private;
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v = vcc_walk(state, 1);
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*pos += !!PTR_ERR(v);
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return v;
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}
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static void pvc_info(struct seq_file *seq, struct atm_vcc *vcc)
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{
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static const char *class_name[] = { "off","UBR","CBR","VBR","ABR" };
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static const char *aal_name[] = {
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"---", "1", "2", "3/4", /* 0- 3 */
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"???", "5", "???", "???", /* 4- 7 */
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"???", "???", "???", "???", /* 8-11 */
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"???", "0", "???", "???"}; /* 12-15 */
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seq_printf(seq, "%3d %3d %5d %-3s %7d %-5s %7d %-6s",
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vcc->dev->number,vcc->vpi,vcc->vci,
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vcc->qos.aal >= sizeof(aal_name)/sizeof(aal_name[0]) ? "err" :
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aal_name[vcc->qos.aal],vcc->qos.rxtp.min_pcr,
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class_name[vcc->qos.rxtp.traffic_class],vcc->qos.txtp.min_pcr,
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class_name[vcc->qos.txtp.traffic_class]);
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if (test_bit(ATM_VF_IS_CLIP, &vcc->flags)) {
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struct clip_vcc *clip_vcc = CLIP_VCC(vcc);
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struct net_device *dev;
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dev = clip_vcc->entry ? clip_vcc->entry->neigh->dev : NULL;
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seq_printf(seq, "CLIP, Itf:%s, Encap:",
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dev ? dev->name : "none?");
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seq_printf(seq, "%s", clip_vcc->encap ? "LLC/SNAP" : "None");
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}
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seq_putc(seq, '\n');
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}
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static const char *vcc_state(struct atm_vcc *vcc)
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{
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static const char *map[] = { ATM_VS2TXT_MAP };
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return map[ATM_VF2VS(vcc->flags)];
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}
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static void vcc_info(struct seq_file *seq, struct atm_vcc *vcc)
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{
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struct sock *sk = sk_atm(vcc);
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seq_printf(seq, "%p ", vcc);
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if (!vcc->dev)
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seq_printf(seq, "Unassigned ");
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else
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seq_printf(seq, "%3d %3d %5d ", vcc->dev->number, vcc->vpi,
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vcc->vci);
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switch (sk->sk_family) {
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case AF_ATMPVC:
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seq_printf(seq, "PVC");
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break;
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case AF_ATMSVC:
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seq_printf(seq, "SVC");
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break;
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default:
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seq_printf(seq, "%3d", sk->sk_family);
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}
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seq_printf(seq, " %04lx %5d %7d/%7d %7d/%7d [%d]\n", vcc->flags, sk->sk_err,
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atomic_read(&sk->sk_wmem_alloc), sk->sk_sndbuf,
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atomic_read(&sk->sk_rmem_alloc), sk->sk_rcvbuf,
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atomic_read(&sk->sk_refcnt));
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}
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static void svc_info(struct seq_file *seq, struct atm_vcc *vcc)
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{
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if (!vcc->dev)
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seq_printf(seq, sizeof(void *) == 4 ?
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"N/A@%p%10s" : "N/A@%p%2s", vcc, "");
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else
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seq_printf(seq, "%3d %3d %5d ",
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vcc->dev->number, vcc->vpi, vcc->vci);
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seq_printf(seq, "%-10s ", vcc_state(vcc));
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seq_printf(seq, "%s%s", vcc->remote.sas_addr.pub,
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*vcc->remote.sas_addr.pub && *vcc->remote.sas_addr.prv ? "+" : "");
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if (*vcc->remote.sas_addr.prv) {
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int i;
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for (i = 0; i < ATM_ESA_LEN; i++)
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seq_printf(seq, "%02x", vcc->remote.sas_addr.prv[i]);
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}
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seq_putc(seq, '\n');
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}
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static int atm_dev_seq_show(struct seq_file *seq, void *v)
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{
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static char atm_dev_banner[] =
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"Itf Type ESI/\"MAC\"addr "
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"AAL(TX,err,RX,err,drop) ... [refcnt]\n";
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if (v == (void *)1)
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seq_puts(seq, atm_dev_banner);
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else {
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struct atm_dev *dev = list_entry(v, struct atm_dev, dev_list);
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atm_dev_info(seq, dev);
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}
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return 0;
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}
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static struct seq_operations atm_dev_seq_ops = {
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.start = atm_dev_seq_start,
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.next = atm_dev_seq_next,
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.stop = atm_dev_seq_stop,
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.show = atm_dev_seq_show,
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};
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static int atm_dev_seq_open(struct inode *inode, struct file *file)
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{
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return seq_open(file, &atm_dev_seq_ops);
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}
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static struct file_operations devices_seq_fops = {
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.open = atm_dev_seq_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = seq_release,
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||||
};
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||||
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||||
static int pvc_seq_show(struct seq_file *seq, void *v)
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||||
{
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||||
static char atm_pvc_banner[] =
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"Itf VPI VCI AAL RX(PCR,Class) TX(PCR,Class)\n";
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|
||||
if (v == (void *)1)
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||||
seq_puts(seq, atm_pvc_banner);
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||||
else {
|
||||
struct vcc_state *state = seq->private;
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||||
struct atm_vcc *vcc = atm_sk(state->sk);
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||||
|
||||
pvc_info(seq, vcc);
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||||
}
|
||||
return 0;
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||||
}
|
||||
|
||||
static struct seq_operations pvc_seq_ops = {
|
||||
.start = vcc_seq_start,
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||||
.next = vcc_seq_next,
|
||||
.stop = vcc_seq_stop,
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||||
.show = pvc_seq_show,
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||||
};
|
||||
|
||||
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();
|
||||
}
|
||||
Reference in New Issue
Block a user