net: x25: use seq_list_foo() helpers
Simplify seq_file code. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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4f134204f7
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@ -25,49 +25,17 @@
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#include <net/x25.h>
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#ifdef CONFIG_PROC_FS
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static __inline__ struct x25_route *x25_get_route_idx(loff_t pos)
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{
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struct list_head *route_entry;
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struct x25_route *rt = NULL;
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list_for_each(route_entry, &x25_route_list) {
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rt = list_entry(route_entry, struct x25_route, node);
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if (!pos--)
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goto found;
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}
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rt = NULL;
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found:
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return rt;
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}
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static void *x25_seq_route_start(struct seq_file *seq, loff_t *pos)
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__acquires(x25_route_list_lock)
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{
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loff_t l = *pos;
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read_lock_bh(&x25_route_list_lock);
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return l ? x25_get_route_idx(--l) : SEQ_START_TOKEN;
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return seq_list_start_head(&x25_route_list, *pos);
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}
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static void *x25_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
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{
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struct x25_route *rt;
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++*pos;
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if (v == SEQ_START_TOKEN) {
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rt = NULL;
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if (!list_empty(&x25_route_list))
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rt = list_entry(x25_route_list.next,
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struct x25_route, node);
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goto out;
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}
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rt = v;
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if (rt->node.next != &x25_route_list)
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rt = list_entry(rt->node.next, struct x25_route, node);
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else
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rt = NULL;
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out:
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return rt;
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return seq_list_next(v, &x25_route_list, pos);
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}
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static void x25_seq_route_stop(struct seq_file *seq, void *v)
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@ -78,9 +46,9 @@ static void x25_seq_route_stop(struct seq_file *seq, void *v)
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static int x25_seq_route_show(struct seq_file *seq, void *v)
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{
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struct x25_route *rt;
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struct x25_route *rt = list_entry(v, struct x25_route, node);
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if (v == SEQ_START_TOKEN) {
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if (v == &x25_route_list) {
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seq_puts(seq, "Address Digits Device\n");
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goto out;
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}
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@ -146,51 +114,16 @@ out:
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return 0;
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}
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static __inline__ struct x25_forward *x25_get_forward_idx(loff_t pos)
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{
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struct x25_forward *f;
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struct list_head *entry;
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list_for_each(entry, &x25_forward_list) {
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f = list_entry(entry, struct x25_forward, node);
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if (!pos--)
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goto found;
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}
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f = NULL;
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found:
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return f;
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}
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static void *x25_seq_forward_start(struct seq_file *seq, loff_t *pos)
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__acquires(x25_forward_list_lock)
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{
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loff_t l = *pos;
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read_lock_bh(&x25_forward_list_lock);
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return l ? x25_get_forward_idx(--l) : SEQ_START_TOKEN;
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return seq_list_start_head(&x25_forward_list, *pos);
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}
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static void *x25_seq_forward_next(struct seq_file *seq, void *v, loff_t *pos)
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{
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struct x25_forward *f;
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++*pos;
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if (v == SEQ_START_TOKEN) {
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f = NULL;
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if (!list_empty(&x25_forward_list))
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f = list_entry(x25_forward_list.next,
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struct x25_forward, node);
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goto out;
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}
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f = v;
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if (f->node.next != &x25_forward_list)
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f = list_entry(f->node.next, struct x25_forward, node);
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else
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f = NULL;
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out:
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return f;
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return seq_list_next(v, &x25_forward_list, pos);
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}
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static void x25_seq_forward_stop(struct seq_file *seq, void *v)
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@ -201,9 +134,9 @@ static void x25_seq_forward_stop(struct seq_file *seq, void *v)
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static int x25_seq_forward_show(struct seq_file *seq, void *v)
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{
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struct x25_forward *f;
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struct x25_forward *f = list_entry(v, struct x25_forward, node);
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if (v == SEQ_START_TOKEN) {
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if (v == &x25_forward_list) {
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seq_printf(seq, "lci dev1 dev2\n");
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goto out;
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}
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@ -212,7 +145,6 @@ static int x25_seq_forward_show(struct seq_file *seq, void *v)
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seq_printf(seq, "%d %-10s %-10s\n",
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f->lci, f->dev1->name, f->dev2->name);
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out:
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return 0;
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}
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