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net: x25: use seq_list_foo() helpers

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Simplify seq_file code.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Li Zefan 2010-02-08 23:20:42 +00:00 committed by David S. Miller
parent 27b5b8657a
commit 4f134204f7
1 changed files with 8 additions and 76 deletions
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84
net/x25/x25_proc.c
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@ -25,49 +25,17 @@
#include <net/x25.h> #include <net/x25.h>
#ifdef CONFIG_PROC_FS #ifdef CONFIG_PROC_FS
static __inline__ struct x25_route *x25_get_route_idx(loff_t pos)
{
struct list_head *route_entry;
struct x25_route *rt = NULL;
list_for_each(route_entry, &x25_route_list) {
rt = list_entry(route_entry, struct x25_route, node);
if (!pos--)
goto found;
}
rt = NULL;
found:
return rt;
}
static void *x25_seq_route_start(struct seq_file *seq, loff_t *pos) static void *x25_seq_route_start(struct seq_file *seq, loff_t *pos)
__acquires(x25_route_list_lock) __acquires(x25_route_list_lock)
{ {
loff_t l = *pos;
read_lock_bh(&x25_route_list_lock); read_lock_bh(&x25_route_list_lock);
return l ? x25_get_route_idx(--l) : SEQ_START_TOKEN; return seq_list_start_head(&x25_route_list, *pos);
} }
static void *x25_seq_route_next(struct seq_file *seq, void *v, loff_t *pos) static void *x25_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
{ {
struct x25_route *rt; return seq_list_next(v, &x25_route_list, pos);
++*pos;
if (v == SEQ_START_TOKEN) {
rt = NULL;
if (!list_empty(&x25_route_list))
rt = list_entry(x25_route_list.next,
struct x25_route, node);
goto out;
}
rt = v;
if (rt->node.next != &x25_route_list)
rt = list_entry(rt->node.next, struct x25_route, node);
else
rt = NULL;
out:
return rt;
} }
static void x25_seq_route_stop(struct seq_file *seq, void *v) static void x25_seq_route_stop(struct seq_file *seq, void *v)
@ -78,9 +46,9 @@ static void x25_seq_route_stop(struct seq_file *seq, void *v)
static int x25_seq_route_show(struct seq_file *seq, void *v) static int x25_seq_route_show(struct seq_file *seq, void *v)
{ {
struct x25_route *rt; struct x25_route *rt = list_entry(v, struct x25_route, node);
if (v == SEQ_START_TOKEN) { if (v == &x25_route_list) {
seq_puts(seq, "Address Digits Device\n"); seq_puts(seq, "Address Digits Device\n");
goto out; goto out;
} }
@ -146,51 +114,16 @@ static int x25_seq_socket_show(struct seq_file *seq, void *v)
return 0; return 0;
} }
static __inline__ struct x25_forward *x25_get_forward_idx(loff_t pos)
{
struct x25_forward *f;
struct list_head *entry;
list_for_each(entry, &x25_forward_list) {
f = list_entry(entry, struct x25_forward, node);
if (!pos--)
goto found;
}
f = NULL;
found:
return f;
}
static void *x25_seq_forward_start(struct seq_file *seq, loff_t *pos) static void *x25_seq_forward_start(struct seq_file *seq, loff_t *pos)
__acquires(x25_forward_list_lock) __acquires(x25_forward_list_lock)
{ {
loff_t l = *pos;
read_lock_bh(&x25_forward_list_lock); read_lock_bh(&x25_forward_list_lock);
return l ? x25_get_forward_idx(--l) : SEQ_START_TOKEN; return seq_list_start_head(&x25_forward_list, *pos);
} }
static void *x25_seq_forward_next(struct seq_file *seq, void *v, loff_t *pos) static void *x25_seq_forward_next(struct seq_file *seq, void *v, loff_t *pos)
{ {
struct x25_forward *f; return seq_list_next(v, &x25_forward_list, pos);
++*pos;
if (v == SEQ_START_TOKEN) {
f = NULL;
if (!list_empty(&x25_forward_list))
f = list_entry(x25_forward_list.next,
struct x25_forward, node);
goto out;
}
f = v;
if (f->node.next != &x25_forward_list)
f = list_entry(f->node.next, struct x25_forward, node);
else
f = NULL;
out:
return f;
} }
static void x25_seq_forward_stop(struct seq_file *seq, void *v) static void x25_seq_forward_stop(struct seq_file *seq, void *v)
@ -201,9 +134,9 @@ static void x25_seq_forward_stop(struct seq_file *seq, void *v)
static int x25_seq_forward_show(struct seq_file *seq, void *v) static int x25_seq_forward_show(struct seq_file *seq, void *v)
{ {
struct x25_forward *f; struct x25_forward *f = list_entry(v, struct x25_forward, node);
if (v == SEQ_START_TOKEN) { if (v == &x25_forward_list) {
seq_printf(seq, "lci dev1 dev2\n"); seq_printf(seq, "lci dev1 dev2\n");
goto out; goto out;
} }
@ -212,7 +145,6 @@ static int x25_seq_forward_show(struct seq_file *seq, void *v)
seq_printf(seq, "%d %-10s %-10s\n", seq_printf(seq, "%d %-10s %-10s\n",
f->lci, f->dev1->name, f->dev2->name); f->lci, f->dev1->name, f->dev2->name);
out: out:
return 0; return 0;
} }