fib_trie: print information on all routing tables
Make /proc/net/fib_trie and /proc/net/fib_triestat display all routing tables, not just local and main. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger
David S. Miller
Родитель
2a706ec188
Коммит
3d3b2d25a4
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@ -2026,9 +2026,8 @@ struct fib_table *fib_hash_table(u32 id)
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/* Depth first Trie walk iterator */
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struct fib_trie_iter {
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struct seq_net_private p;
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struct trie *trie_local, *trie_main;
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struct fib_table *tb;
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struct tnode *tnode;
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struct trie *trie;
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unsigned index;
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unsigned depth;
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};
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@ -2081,31 +2080,26 @@ rescan:
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static struct node *fib_trie_get_first(struct fib_trie_iter *iter,
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struct trie *t)
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{
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struct node *n ;
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struct node *n;
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if (!t)
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return NULL;
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n = rcu_dereference(t->trie);
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if (!iter)
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if (!n)
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return NULL;
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if (n) {
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if (IS_TNODE(n)) {
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iter->tnode = (struct tnode *) n;
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iter->trie = t;
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iter->index = 0;
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iter->depth = 1;
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} else {
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iter->tnode = NULL;
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iter->trie = t;
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iter->index = 0;
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iter->depth = 0;
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}
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return n;
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if (IS_TNODE(n)) {
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iter->tnode = (struct tnode *) n;
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iter->index = 0;
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iter->depth = 1;
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} else {
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iter->tnode = NULL;
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iter->index = 0;
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iter->depth = 0;
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}
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return NULL;
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return n;
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}
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static void trie_collect_stats(struct trie *t, struct trie_stat *s)
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@ -2116,8 +2110,7 @@ static void trie_collect_stats(struct trie *t, struct trie_stat *s)
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memset(s, 0, sizeof(*s));
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rcu_read_lock();
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for (n = fib_trie_get_first(&iter, t); n;
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n = fib_trie_get_next(&iter)) {
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for (n = fib_trie_get_first(&iter, t); n; n = fib_trie_get_next(&iter)) {
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if (IS_LEAF(n)) {
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struct leaf *l = (struct leaf *)n;
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struct leaf_info *li;
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@ -2206,36 +2199,48 @@ static void trie_show_usage(struct seq_file *seq,
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}
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#endif /* CONFIG_IP_FIB_TRIE_STATS */
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static void fib_trie_show(struct seq_file *seq, const char *name,
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struct trie *trie)
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static void fib_table_print(struct seq_file *seq, struct fib_table *tb)
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{
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struct trie_stat stat;
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trie_collect_stats(trie, &stat);
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seq_printf(seq, "%s:\n", name);
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trie_show_stats(seq, &stat);
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#ifdef CONFIG_IP_FIB_TRIE_STATS
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trie_show_usage(seq, &trie->stats);
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#endif
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if (tb->tb_id == RT_TABLE_LOCAL)
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seq_puts(seq, "Local:\n");
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else if (tb->tb_id == RT_TABLE_MAIN)
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seq_puts(seq, "Main:\n");
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else
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seq_printf(seq, "Id %d:\n", tb->tb_id);
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}
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static int fib_triestat_seq_show(struct seq_file *seq, void *v)
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{
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struct net *net = (struct net *)seq->private;
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struct fib_table *tb;
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unsigned int h;
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seq_printf(seq,
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"Basic info: size of leaf:"
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" %Zd bytes, size of tnode: %Zd bytes.\n",
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sizeof(struct leaf), sizeof(struct tnode));
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tb = fib_get_table(net, RT_TABLE_LOCAL);
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if (tb)
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fib_trie_show(seq, "Local", (struct trie *) tb->tb_data);
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for (h = 0; h < FIB_TABLE_HASHSZ; h++) {
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struct hlist_head *head = &net->ipv4.fib_table_hash[h];
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struct hlist_node *node;
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struct fib_table *tb;
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tb = fib_get_table(net, RT_TABLE_MAIN);
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if (tb)
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fib_trie_show(seq, "Main", (struct trie *) tb->tb_data);
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hlist_for_each_entry_rcu(tb, node, head, tb_hlist) {
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struct trie *t = (struct trie *) tb->tb_data;
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struct trie_stat stat;
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if (!t)
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continue;
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fib_table_print(seq, tb);
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trie_collect_stats(t, &stat);
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trie_show_stats(seq, &stat);
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#ifdef CONFIG_IP_FIB_TRIE_STATS
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trie_show_usage(seq, &t->stats);
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#endif
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}
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}
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return 0;
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}
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@ -2271,23 +2276,30 @@ static const struct file_operations fib_triestat_fops = {
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.release = fib_triestat_seq_release,
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};
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static struct node *fib_trie_get_idx(struct fib_trie_iter *iter,
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loff_t pos)
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static struct node *fib_trie_get_idx(struct fib_trie_iter *iter, loff_t pos)
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{
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struct net *net = iter->p.net;
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loff_t idx = 0;
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struct node *n;
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unsigned int h;
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for (n = fib_trie_get_first(iter, iter->trie_local);
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n; ++idx, n = fib_trie_get_next(iter)) {
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if (pos == idx)
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return n;
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for (h = 0; h < FIB_TABLE_HASHSZ; h++) {
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struct hlist_head *head = &net->ipv4.fib_table_hash[h];
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struct hlist_node *node;
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struct fib_table *tb;
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hlist_for_each_entry_rcu(tb, node, head, tb_hlist) {
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struct node *n;
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for (n = fib_trie_get_first(iter,
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(struct trie *) tb->tb_data);
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n; n = fib_trie_get_next(iter))
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if (pos == idx++) {
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iter->tb = tb;
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return n;
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}
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}
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}
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for (n = fib_trie_get_first(iter, iter->trie_main);
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n; ++idx, n = fib_trie_get_next(iter)) {
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if (pos == idx)
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return n;
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}
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return NULL;
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}
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@ -2295,43 +2307,49 @@ static void *fib_trie_seq_start(struct seq_file *seq, loff_t *pos)
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__acquires(RCU)
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{
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struct fib_trie_iter *iter = seq->private;
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struct fib_table *tb;
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if (!iter->trie_local) {
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tb = fib_get_table(iter->p.net, RT_TABLE_LOCAL);
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if (tb)
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iter->trie_local = (struct trie *) tb->tb_data;
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}
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if (!iter->trie_main) {
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tb = fib_get_table(iter->p.net, RT_TABLE_MAIN);
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if (tb)
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iter->trie_main = (struct trie *) tb->tb_data;
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}
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rcu_read_lock();
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if (*pos == 0)
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return SEQ_START_TOKEN;
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return fib_trie_get_idx(iter, *pos - 1);
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return fib_trie_get_idx(iter, *pos);
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}
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static void *fib_trie_seq_next(struct seq_file *seq, void *v, loff_t *pos)
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{
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struct fib_trie_iter *iter = seq->private;
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void *l = v;
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struct net *net = iter->p.net;
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struct fib_table *tb = iter->tb;
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struct hlist_node *tb_node;
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unsigned int h;
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struct node *n;
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++*pos;
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if (v == SEQ_START_TOKEN)
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return fib_trie_get_idx(iter, 0);
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/* next node in same table */
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n = fib_trie_get_next(iter);
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if (n)
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return n;
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v = fib_trie_get_next(iter);
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BUG_ON(v == l);
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if (v)
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return v;
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/* continue scan in next trie */
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if (iter->trie == iter->trie_local)
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return fib_trie_get_first(iter, iter->trie_main);
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/* walk rest of this hash chain */
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h = tb->tb_id & (FIB_TABLE_HASHSZ - 1);
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while ( (tb_node = rcu_dereference(tb->tb_hlist.next)) ) {
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tb = hlist_entry(tb_node, struct fib_table, tb_hlist);
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n = fib_trie_get_first(iter, (struct trie *) tb->tb_data);
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if (n)
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goto found;
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}
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/* new hash chain */
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while (++h < FIB_TABLE_HASHSZ) {
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struct hlist_head *head = &net->ipv4.fib_table_hash[h];
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hlist_for_each_entry_rcu(tb, tb_node, head, tb_hlist) {
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n = fib_trie_get_first(iter, (struct trie *) tb->tb_data);
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if (n)
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goto found;
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}
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}
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return NULL;
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found:
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iter->tb = tb;
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return n;
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}
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static void fib_trie_seq_stop(struct seq_file *seq, void *v)
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@ -2388,15 +2406,8 @@ static int fib_trie_seq_show(struct seq_file *seq, void *v)
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const struct fib_trie_iter *iter = seq->private;
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struct node *n = v;
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if (v == SEQ_START_TOKEN)
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return 0;
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if (!node_parent_rcu(n)) {
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if (iter->trie == iter->trie_local)
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seq_puts(seq, "<local>:\n");
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else
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seq_puts(seq, "<main>:\n");
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}
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if (!node_parent_rcu(n))
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fib_table_print(seq, iter->tb);
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if (IS_TNODE(n)) {
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struct tnode *tn = (struct tnode *) n;
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