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Commit 4aea2cbf authored by Chas Williams's avatar Chas Williams Committed by David S. Miller
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[ATM]: Move lan seq_file ops to lec.c [1/3]

parent a45e8399
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Showing with 260 additions and 263 deletions
net/atm/lec.c
View file @ 4aea2cbf
......@@ -21,6 +21,8 @@
#include <net/dst.h>
#include <linux/proc_fs.h>
#include <linux/spinlock.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
/* TokenRing if needed */
#ifdef CONFIG_TR
......@@ -846,8 +848,264 @@ static struct atm_lane_ops __atm_lane_ops =
.owner = THIS_MODULE
};
#ifdef CONFIG_PROC_FS
static char* lec_arp_get_status_string(unsigned char status)
{
static char *lec_arp_status_string[] = {
"ESI_UNKNOWN ",
"ESI_ARP_PENDING ",
"ESI_VC_PENDING ",
"<Undefined> ",
"ESI_FLUSH_PENDING ",
"ESI_FORWARD_DIRECT"
};
if (status > ESI_FORWARD_DIRECT)
status = 3; /* ESI_UNDEFINED */
return lec_arp_status_string[status];
}
static void lec_info(struct seq_file *seq, struct lec_arp_table *entry)
{
int i;
for (i = 0; i < ETH_ALEN; i++)
seq_printf(seq, "%2.2x", entry->mac_addr[i] & 0xff);
seq_printf(seq, " ");
for (i = 0; i < ATM_ESA_LEN; i++)
seq_printf(seq, "%2.2x", entry->atm_addr[i] & 0xff);
seq_printf(seq, " %s %4.4x", lec_arp_get_status_string(entry->status),
entry->flags & 0xffff);
if (entry->vcc)
seq_printf(seq, "%3d %3d ", entry->vcc->vpi, entry->vcc->vci);
else
seq_printf(seq, " ");
if (entry->recv_vcc) {
seq_printf(seq, " %3d %3d", entry->recv_vcc->vpi,
entry->recv_vcc->vci);
}
seq_putc(seq, '\n');
}
struct lec_state {
unsigned long flags;
struct lec_priv *locked;
struct lec_arp_table *entry;
struct net_device *dev;
int itf;
int arp_table;
int misc_table;
};
static void *lec_tbl_walk(struct lec_state *state, struct lec_arp_table *tbl,
loff_t *l)
{
struct lec_arp_table *e = state->entry;
if (!e)
e = tbl;
if (e == (void *)1) {
e = tbl;
--*l;
}
for (; e; e = e->next) {
if (--*l < 0)
break;
}
state->entry = e;
return (*l < 0) ? state : NULL;
}
static void *lec_arp_walk(struct lec_state *state, loff_t *l,
struct lec_priv *priv)
{
void *v = NULL;
int p;
for (p = state->arp_table; p < LEC_ARP_TABLE_SIZE; p++) {
v = lec_tbl_walk(state, priv->lec_arp_tables[p], l);
if (v)
break;
}
state->arp_table = p;
return v;
}
static void *lec_misc_walk(struct lec_state *state, loff_t *l,
struct lec_priv *priv)
{
struct lec_arp_table *lec_misc_tables[] = {
priv->lec_arp_empty_ones,
priv->lec_no_forward,
priv->mcast_fwds
};
void *v = NULL;
int q;
for (q = state->misc_table; q < ARRAY_SIZE(lec_misc_tables); q++) {
v = lec_tbl_walk(state, lec_misc_tables[q], l);
if (v)
break;
}
state->misc_table = q;
return v;
}
static void *lec_priv_walk(struct lec_state *state, loff_t *l,
struct lec_priv *priv)
{
if (!state->locked) {
state->locked = priv;
spin_lock_irqsave(&priv->lec_arp_lock, state->flags);
}
if (!lec_arp_walk(state, l, priv) &&
!lec_misc_walk(state, l, priv)) {
spin_unlock_irqrestore(&priv->lec_arp_lock, state->flags);
state->locked = NULL;
/* Partial state reset for the next time we get called */
state->arp_table = state->misc_table = 0;
}
return state->locked;
}
static void *lec_itf_walk(struct lec_state *state, loff_t *l)
{
struct net_device *dev;
void *v;
dev = state->dev ? state->dev : dev_lec[state->itf];
v = (dev && dev->priv) ? lec_priv_walk(state, l, dev->priv) : NULL;
if (!v && dev) {
dev_put(dev);
/* Partial state reset for the next time we get called */
dev = NULL;
}
state->dev = dev;
return v;
}
static void *lec_get_idx(struct lec_state *state, loff_t l)
{
void *v = NULL;
for (; state->itf < MAX_LEC_ITF; state->itf++) {
v = lec_itf_walk(state, &l);
if (v)
break;
}
return v;
}
static void *lec_seq_start(struct seq_file *seq, loff_t *pos)
{
struct lec_state *state = seq->private;
state->itf = 0;
state->dev = NULL;
state->locked = NULL;
state->arp_table = 0;
state->misc_table = 0;
state->entry = (void *)1;
return *pos ? lec_get_idx(state, *pos) : (void*)1;
}
static void lec_seq_stop(struct seq_file *seq, void *v)
{
struct lec_state *state = seq->private;
if (state->dev) {
spin_unlock_irqrestore(&state->locked->lec_arp_lock,
state->flags);
dev_put(state->dev);
}
}
static void *lec_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct lec_state *state = seq->private;
v = lec_get_idx(state, 1);
*pos += !!PTR_ERR(v);
return v;
}
static int lec_seq_show(struct seq_file *seq, void *v)
{
static char lec_banner[] = "Itf MAC ATM destination"
" Status Flags "
"VPI/VCI Recv VPI/VCI\n";
if (v == (void *)1)
seq_puts(seq, lec_banner);
else {
struct lec_state *state = seq->private;
struct net_device *dev = state->dev;
seq_printf(seq, "%s ", dev->name);
lec_info(seq, state->entry);
}
return 0;
}
static struct seq_operations lec_seq_ops = {
.start = lec_seq_start,
.next = lec_seq_next,
.stop = lec_seq_stop,
.show = lec_seq_show,
};
static int lec_seq_open(struct inode *inode, struct file *file)
{
struct lec_state *state;
struct seq_file *seq;
int rc = -EAGAIN;
state = kmalloc(sizeof(*state), GFP_KERNEL);
if (!state) {
rc = -ENOMEM;
goto out;
}
rc = seq_open(file, &lec_seq_ops);
if (rc)
goto out_kfree;
seq = file->private_data;
seq->private = state;
out:
return rc;
out_kfree:
kfree(state);
goto out;
}
static int lec_seq_release(struct inode *inode, struct file *file)
{
return seq_release_private(inode, file);
}
static struct file_operations lec_seq_fops = {
.owner = THIS_MODULE,
.open = lec_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = lec_seq_release,
};
#endif
static int __init lane_module_init(void)
{
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *p;
p = create_proc_entry("lec", S_IRUGO, atm_proc_root);
if (p)
p->proc_fops = &lec_seq_fops;
#endif
atm_lane_ops_set(&__atm_lane_ops);
printk("lec.c: " __DATE__ " " __TIME__ " initialized\n");
return 0;
......@@ -858,6 +1116,8 @@ static void __exit lane_module_cleanup(void)
int i;
struct lec_priv *priv;
remove_proc_entry("lec", atm_proc_root);
atm_lane_ops_set(NULL);
for (i = 0; i < MAX_LEC_ITF; i++) {
......
net/atm/proc.c
View file @ 4aea2cbf
......@@ -31,11 +31,6 @@
#include "common.h" /* atm_proc_init prototype */
#include "signaling.h" /* to get sigd - ugly too */
#if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
#include "lec.h"
#include "lec_arpc.h"
#endif
static ssize_t proc_dev_atm_read(struct file *file,char *buf,size_t count,
loff_t *pos);
......@@ -237,49 +232,6 @@ static void svc_info(struct seq_file *seq, struct atm_vcc *vcc)
seq_putc(seq, '\n');
}
#if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
static char* lec_arp_get_status_string(unsigned char status)
{
static char *lec_arp_status_string[] = {
"ESI_UNKNOWN ",
"ESI_ARP_PENDING ",
"ESI_VC_PENDING ",
"<Unknown> ",
"ESI_FLUSH_PENDING ",
"ESI_FORWARD_DIRECT",
"<Undefined>"
};
if (status > ESI_FORWARD_DIRECT)
status = ESI_FORWARD_DIRECT + 1;
return lec_arp_status_string[status];
}
static void lec_info(struct seq_file *seq, struct lec_arp_table *entry)
{
int i;
for (i = 0; i < ETH_ALEN; i++)
seq_printf(seq, "%2.2x", entry->mac_addr[i] & 0xff);
seq_printf(seq, " ");
for (i = 0; i < ATM_ESA_LEN; i++)
seq_printf(seq, "%2.2x", entry->atm_addr[i] & 0xff);
seq_printf(seq, " %s %4.4x", lec_arp_get_status_string(entry->status),
entry->flags & 0xffff);
if (entry->vcc)
seq_printf(seq, "%3d %3d ", entry->vcc->vpi, entry->vcc->vci);
else
seq_printf(seq, " ");
if (entry->recv_vcc) {
seq_printf(seq, " %3d %3d", entry->recv_vcc->vpi,
entry->recv_vcc->vci);
}
seq_putc(seq, '\n');
}
#endif /* CONFIG_ATM_LANE */
static int atm_dev_seq_show(struct seq_file *seq, void *v)
{
static char atm_dev_banner[] =
......@@ -419,218 +371,6 @@ static struct file_operations svc_seq_fops = {
.release = vcc_seq_release,
};
#if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
struct lec_state {
unsigned long flags;
struct lec_priv *locked;
struct lec_arp_table *entry;
struct net_device *dev;
int itf;
int arp_table;
int misc_table;
};
static void *lec_tbl_walk(struct lec_state *state, struct lec_arp_table *tbl,
loff_t *l)
{
struct lec_arp_table *e = state->entry;
if (!e)
e = tbl;
if (e == (void *)1) {
e = tbl;
--*l;
}
for (; e; e = e->next) {
if (--*l < 0)
break;
}
state->entry = e;
return (*l < 0) ? state : NULL;
}
static void *lec_arp_walk(struct lec_state *state, loff_t *l,
struct lec_priv *priv)
{
void *v = NULL;
int p;
for (p = state->arp_table; p < LEC_ARP_TABLE_SIZE; p++) {
v = lec_tbl_walk(state, priv->lec_arp_tables[p], l);
if (v)
break;
}
state->arp_table = p;
return v;
}
static void *lec_misc_walk(struct lec_state *state, loff_t *l,
struct lec_priv *priv)
{
struct lec_arp_table *lec_misc_tables[] = {
priv->lec_arp_empty_ones,
priv->lec_no_forward,
priv->mcast_fwds
};
void *v = NULL;
int q;
for (q = state->misc_table; q < ARRAY_SIZE(lec_misc_tables); q++) {
v = lec_tbl_walk(state, lec_misc_tables[q], l);
if (v)
break;
}
state->misc_table = q;
return v;
}
static void *lec_priv_walk(struct lec_state *state, loff_t *l,
struct lec_priv *priv)
{
if (!state->locked) {
state->locked = priv;
spin_lock_irqsave(&priv->lec_arp_lock, state->flags);
}
if (!lec_arp_walk(state, l, priv) &&
!lec_misc_walk(state, l, priv)) {
spin_unlock_irqrestore(&priv->lec_arp_lock, state->flags);
state->locked = NULL;
/* Partial state reset for the next time we get called */
state->arp_table = state->misc_table = 0;
}
return state->locked;
}
static void *lec_itf_walk(struct lec_state *state, loff_t *l)
{
struct net_device *dev;
void *v;
dev = state->dev ? state->dev : atm_lane_ops->get_lec(state->itf);
v = (dev && dev->priv) ? lec_priv_walk(state, l, dev->priv) : NULL;
if (!v && dev) {
dev_put(dev);
/* Partial state reset for the next time we get called */
dev = NULL;
}
state->dev = dev;
return v;
}
static void *lec_get_idx(struct lec_state *state, loff_t l)
{
void *v = NULL;
for (; state->itf < MAX_LEC_ITF; state->itf++) {
v = lec_itf_walk(state, &l);
if (v)
break;
}
return v;
}
static void *lec_seq_start(struct seq_file *seq, loff_t *pos)
{
struct lec_state *state = seq->private;
state->itf = 0;
state->dev = NULL;
state->locked = NULL;
state->arp_table = 0;
state->misc_table = 0;
state->entry = (void *)1;
return *pos ? lec_get_idx(state, *pos) : (void*)1;
}
static void lec_seq_stop(struct seq_file *seq, void *v)
{
struct lec_state *state = seq->private;
if (state->dev) {
spin_unlock_irqrestore(&state->locked->lec_arp_lock,
state->flags);
dev_put(state->dev);
}
}
static void *lec_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct lec_state *state = seq->private;
v = lec_get_idx(state, 1);
*pos += !!PTR_ERR(v);
return v;
}
static int lec_seq_show(struct seq_file *seq, void *v)
{
static char lec_banner[] = "Itf MAC ATM destination"
" Status Flags "
"VPI/VCI Recv VPI/VCI\n";
if (v == (void *)1)
seq_puts(seq, lec_banner);
else {
struct lec_state *state = seq->private;
struct net_device *dev = state->dev;
seq_printf(seq, "%s ", dev->name);
lec_info(seq, state->entry);
}
return 0;
}
static struct seq_operations lec_seq_ops = {
.start = lec_seq_start,
.next = lec_seq_next,
.stop = lec_seq_stop,
.show = lec_seq_show,
};
static int lec_seq_open(struct inode *inode, struct file *file)
{
struct lec_state *state;
struct seq_file *seq;
int rc = -EAGAIN;
if (!try_atm_lane_ops())
goto out;
state = kmalloc(sizeof(*state), GFP_KERNEL);
if (!state) {
rc = -ENOMEM;
goto out;
}
rc = seq_open(file, &lec_seq_ops);
if (rc)
goto out_kfree;
seq = file->private_data;
seq->private = state;
out:
return rc;
out_kfree:
kfree(state);
goto out;
}
static int lec_seq_release(struct inode *inode, struct file *file)
{
module_put(atm_lane_ops->owner);
return seq_release_private(inode, file);
}
static struct file_operations lec_seq_fops = {
.open = lec_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = lec_seq_release,
};
#endif /* CONFIG_ATM_LANE */
static ssize_t proc_dev_atm_read(struct file *file,char *buf,size_t count,
loff_t *pos)
{
......@@ -712,9 +452,6 @@ static struct atm_proc_entry {
{ .name = "pvc", .proc_fops = &pvc_seq_fops },
{ .name = "svc", .proc_fops = &svc_seq_fops },
{ .name = "vc", .proc_fops = &vcc_seq_fops },
#if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
{ .name = "lec", .proc_fops = &lec_seq_fops },
#endif
{ .name = NULL, .proc_fops = NULL }
};
......
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