forked from Minki/linux
[IPV4] fib_trie: fix proc interface
Create one iterator for walking over FIB trie, and use it for all the /proc functions. Add a /proc/net/route output for backwards compatibility with old applications. Make initialization of fib_trie same as fib_hash so no #ifdef is needed in af_inet.c Fixes: http://bugzilla.kernel.org/show_bug.cgi?id=5209 Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger
David S. Miller
parent
8259f16257
commit
cb7b593c2c
@ -1248,11 +1248,6 @@ module_init(inet_init);
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/* ------------------------------------------------------------------------ */
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#ifdef CONFIG_PROC_FS
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#ifdef CONFIG_IP_FIB_TRIE
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extern int fib_stat_proc_init(void);
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extern void fib_stat_proc_exit(void);
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#endif
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static int __init ipv4_proc_init(void)
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{
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int rc = 0;
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@ -1265,19 +1260,11 @@ static int __init ipv4_proc_init(void)
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goto out_udp;
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if (fib_proc_init())
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goto out_fib;
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#ifdef CONFIG_IP_FIB_TRIE
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if (fib_stat_proc_init())
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goto out_fib_stat;
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#endif
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if (ip_misc_proc_init())
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goto out_misc;
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out:
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return rc;
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out_misc:
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#ifdef CONFIG_IP_FIB_TRIE
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fib_stat_proc_exit();
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out_fib_stat:
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#endif
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fib_proc_exit();
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out_fib:
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udp4_proc_exit();
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@ -43,7 +43,7 @@
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* 2 of the License, or (at your option) any later version.
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*/
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#define VERSION "0.402"
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#define VERSION "0.403"
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#include <linux/config.h>
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#include <asm/uaccess.h>
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@ -164,7 +164,6 @@ static struct node *resize(struct trie *t, struct tnode *tn);
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static struct tnode *inflate(struct trie *t, struct tnode *tn);
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static struct tnode *halve(struct trie *t, struct tnode *tn);
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static void tnode_free(struct tnode *tn);
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static void trie_dump_seq(struct seq_file *seq, struct trie *t);
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static kmem_cache_t *fn_alias_kmem __read_mostly;
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static struct trie *trie_local = NULL, *trie_main = NULL;
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@ -1971,378 +1970,137 @@ struct fib_table * __init fib_hash_init(int id)
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return tb;
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}
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/* Trie dump functions */
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static void putspace_seq(struct seq_file *seq, int n)
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{
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while (n--)
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seq_printf(seq, " ");
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}
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static void printbin_seq(struct seq_file *seq, unsigned int v, int bits)
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{
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while (bits--)
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seq_printf(seq, "%s", (v & (1<<bits))?"1":"0");
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}
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static void printnode_seq(struct seq_file *seq, int indent, struct node *n,
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int pend, int cindex, int bits)
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{
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putspace_seq(seq, indent);
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if (IS_LEAF(n))
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seq_printf(seq, "|");
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else
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seq_printf(seq, "+");
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if (bits) {
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seq_printf(seq, "%d/", cindex);
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printbin_seq(seq, cindex, bits);
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seq_printf(seq, ": ");
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} else
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seq_printf(seq, "<root>: ");
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seq_printf(seq, "%s:%p ", IS_LEAF(n)?"Leaf":"Internal node", n);
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if (IS_LEAF(n)) {
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struct leaf *l = (struct leaf *)n;
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struct fib_alias *fa;
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int i;
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seq_printf(seq, "key=%d.%d.%d.%d\n",
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n->key >> 24, (n->key >> 16) % 256, (n->key >> 8) % 256, n->key % 256);
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for (i = 32; i >= 0; i--)
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if (find_leaf_info(&l->list, i)) {
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struct list_head *fa_head = get_fa_head(l, i);
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if (!fa_head)
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continue;
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if (list_empty(fa_head))
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continue;
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putspace_seq(seq, indent+2);
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seq_printf(seq, "{/%d...dumping}\n", i);
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list_for_each_entry_rcu(fa, fa_head, fa_list) {
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putspace_seq(seq, indent+2);
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if (fa->fa_info == NULL) {
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seq_printf(seq, "Error fa_info=NULL\n");
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continue;
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}
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if (fa->fa_info->fib_nh == NULL) {
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seq_printf(seq, "Error _fib_nh=NULL\n");
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continue;
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}
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seq_printf(seq, "{type=%d scope=%d TOS=%d}\n",
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fa->fa_type,
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fa->fa_scope,
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fa->fa_tos);
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}
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}
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} else {
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struct tnode *tn = (struct tnode *)n;
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int plen = ((struct tnode *)n)->pos;
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t_key prf = MASK_PFX(n->key, plen);
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seq_printf(seq, "key=%d.%d.%d.%d/%d\n",
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prf >> 24, (prf >> 16) % 256, (prf >> 8) % 256, prf % 256, plen);
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putspace_seq(seq, indent); seq_printf(seq, "| ");
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seq_printf(seq, "{key prefix=%08x/", tn->key & TKEY_GET_MASK(0, tn->pos));
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printbin_seq(seq, tkey_extract_bits(tn->key, 0, tn->pos), tn->pos);
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seq_printf(seq, "}\n");
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putspace_seq(seq, indent); seq_printf(seq, "| ");
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seq_printf(seq, "{pos=%d", tn->pos);
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seq_printf(seq, " (skip=%d bits)", tn->pos - pend);
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seq_printf(seq, " bits=%d (%u children)}\n", tn->bits, (1 << tn->bits));
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putspace_seq(seq, indent); seq_printf(seq, "| ");
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seq_printf(seq, "{empty=%d full=%d}\n", tn->empty_children, tn->full_children);
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}
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}
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static void trie_dump_seq(struct seq_file *seq, struct trie *t)
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{
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struct node *n;
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int cindex = 0;
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int indent = 1;
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int pend = 0;
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int depth = 0;
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struct tnode *tn;
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rcu_read_lock();
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n = rcu_dereference(t->trie);
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seq_printf(seq, "------ trie_dump of t=%p ------\n", t);
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if (!n) {
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seq_printf(seq, "------ trie is empty\n");
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rcu_read_unlock();
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return;
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}
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printnode_seq(seq, indent, n, pend, cindex, 0);
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if (!IS_TNODE(n)) {
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rcu_read_unlock();
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return;
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}
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tn = (struct tnode *)n;
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pend = tn->pos+tn->bits;
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putspace_seq(seq, indent); seq_printf(seq, "\\--\n");
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indent += 3;
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depth++;
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while (tn && cindex < (1 << tn->bits)) {
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struct node *child = rcu_dereference(tn->child[cindex]);
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if (!child)
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cindex++;
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else {
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/* Got a child */
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printnode_seq(seq, indent, child, pend,
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cindex, tn->bits);
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if (IS_LEAF(child))
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cindex++;
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else {
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/*
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* New tnode. Decend one level
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*/
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depth++;
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n = child;
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tn = (struct tnode *)n;
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pend = tn->pos+tn->bits;
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putspace_seq(seq, indent);
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seq_printf(seq, "\\--\n");
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indent += 3;
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cindex = 0;
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}
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}
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/*
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* Test if we are done
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*/
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while (cindex >= (1 << tn->bits)) {
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/*
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* Move upwards and test for root
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* pop off all traversed nodes
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*/
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if (NODE_PARENT(tn) == NULL) {
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tn = NULL;
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break;
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}
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cindex = tkey_extract_bits(tn->key, NODE_PARENT(tn)->pos, NODE_PARENT(tn)->bits);
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cindex++;
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tn = NODE_PARENT(tn);
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pend = tn->pos + tn->bits;
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indent -= 3;
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depth--;
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}
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}
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rcu_read_unlock();
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}
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static struct trie_stat *trie_stat_new(void)
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{
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struct trie_stat *s;
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int i;
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s = kmalloc(sizeof(struct trie_stat), GFP_KERNEL);
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if (!s)
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return NULL;
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s->totdepth = 0;
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s->maxdepth = 0;
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s->tnodes = 0;
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s->leaves = 0;
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s->nullpointers = 0;
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for (i = 0; i < MAX_CHILDS; i++)
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s->nodesizes[i] = 0;
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return s;
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}
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static struct trie_stat *trie_collect_stats(struct trie *t)
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{
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struct node *n;
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struct trie_stat *s = trie_stat_new();
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int cindex = 0;
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int pend = 0;
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int depth = 0;
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if (!s)
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return NULL;
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rcu_read_lock();
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n = rcu_dereference(t->trie);
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if (!n)
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return s;
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if (IS_TNODE(n)) {
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struct tnode *tn = (struct tnode *)n;
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pend = tn->pos+tn->bits;
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s->nodesizes[tn->bits]++;
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depth++;
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while (tn && cindex < (1 << tn->bits)) {
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struct node *ch = rcu_dereference(tn->child[cindex]);
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if (ch) {
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/* Got a child */
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if (IS_LEAF(tn->child[cindex])) {
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cindex++;
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/* stats */
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if (depth > s->maxdepth)
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s->maxdepth = depth;
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s->totdepth += depth;
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s->leaves++;
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} else {
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/*
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* New tnode. Decend one level
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*/
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s->tnodes++;
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s->nodesizes[tn->bits]++;
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depth++;
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n = ch;
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tn = (struct tnode *)n;
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pend = tn->pos+tn->bits;
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cindex = 0;
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}
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} else {
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cindex++;
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s->nullpointers++;
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}
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/*
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* Test if we are done
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*/
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while (cindex >= (1 << tn->bits)) {
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/*
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* Move upwards and test for root
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* pop off all traversed nodes
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*/
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if (NODE_PARENT(tn) == NULL) {
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tn = NULL;
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n = NULL;
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break;
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}
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cindex = tkey_extract_bits(tn->key, NODE_PARENT(tn)->pos, NODE_PARENT(tn)->bits);
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tn = NODE_PARENT(tn);
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cindex++;
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n = (struct node *)tn;
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pend = tn->pos+tn->bits;
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depth--;
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}
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}
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}
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rcu_read_unlock();
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return s;
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}
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#ifdef CONFIG_PROC_FS
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/* Depth first Trie walk iterator */
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struct fib_trie_iter {
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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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static struct fib_alias *fib_triestat_get_first(struct seq_file *seq)
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static struct node *fib_trie_get_next(struct fib_trie_iter *iter)
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{
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struct tnode *tn = iter->tnode;
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unsigned cindex = iter->index;
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struct tnode *p;
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pr_debug("get_next iter={node=%p index=%d depth=%d}\n",
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iter->tnode, iter->index, iter->depth);
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rescan:
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while (cindex < (1<<tn->bits)) {
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struct node *n = tnode_get_child(tn, cindex);
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if (n) {
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if (IS_LEAF(n)) {
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iter->tnode = tn;
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iter->index = cindex + 1;
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} else {
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/* push down one level */
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iter->tnode = (struct tnode *) n;
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iter->index = 0;
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++iter->depth;
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}
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return n;
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}
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++cindex;
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}
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/* Current node exhausted, pop back up */
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p = NODE_PARENT(tn);
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if (p) {
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cindex = tkey_extract_bits(tn->key, p->pos, p->bits)+1;
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tn = p;
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--iter->depth;
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goto rescan;
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}
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/* got root? */
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return NULL;
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}
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static struct fib_alias *fib_triestat_get_next(struct seq_file *seq)
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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 = rcu_dereference(t->trie);
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if (n && 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 = 0;
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return n;
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}
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return NULL;
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}
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static void *fib_triestat_seq_start(struct seq_file *seq, loff_t *pos)
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static void trie_collect_stats(struct trie *t, struct trie_stat *s)
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{
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if (!ip_fib_main_table)
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return NULL;
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struct node *n;
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struct fib_trie_iter iter;
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if (*pos)
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return fib_triestat_get_next(seq);
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else
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return SEQ_START_TOKEN;
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}
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memset(s, 0, sizeof(*s));
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static void *fib_triestat_seq_next(struct seq_file *seq, void *v, loff_t *pos)
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{
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++*pos;
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if (v == SEQ_START_TOKEN)
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return fib_triestat_get_first(seq);
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else
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return fib_triestat_get_next(seq);
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}
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static void fib_triestat_seq_stop(struct seq_file *seq, void *v)
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{
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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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if (IS_LEAF(n)) {
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s->leaves++;
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s->totdepth += iter.depth;
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if (iter.depth > s->maxdepth)
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s->maxdepth = iter.depth;
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} else {
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const struct tnode *tn = (const struct tnode *) n;
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int i;
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s->tnodes++;
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s->nodesizes[tn->bits]++;
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for (i = 0; i < (1<<tn->bits); i++)
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if (!tn->child[i])
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s->nullpointers++;
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}
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}
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rcu_read_unlock();
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}
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/*
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* This outputs /proc/net/fib_triestats
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*
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* It always works in backward compatibility mode.
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* The format of the file is not supposed to be changed.
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*/
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static void collect_and_show(struct trie *t, struct seq_file *seq)
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static void trie_show_stats(struct seq_file *seq, struct trie_stat *stat)
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{
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int bytes = 0; /* How many bytes are used, a ref is 4 bytes */
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int i, max, pointers;
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struct trie_stat *stat;
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int avdepth;
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unsigned i, max, pointers, bytes, avdepth;
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stat = trie_collect_stats(t);
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if (stat->leaves)
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avdepth = stat->totdepth*100 / stat->leaves;
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else
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avdepth = 0;
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bytes = 0;
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seq_printf(seq, "trie=%p\n", t);
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seq_printf(seq, "\tAver depth: %d.%02d\n", avdepth / 100, avdepth % 100 );
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seq_printf(seq, "\tMax depth: %u\n", stat->maxdepth);
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if (stat) {
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if (stat->leaves)
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avdepth = stat->totdepth*100 / stat->leaves;
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else
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avdepth = 0;
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seq_printf(seq, "Aver depth: %d.%02d\n", avdepth / 100, avdepth % 100);
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seq_printf(seq, "Max depth: %4d\n", stat->maxdepth);
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seq_printf(seq, "\tLeaves: %u\n", stat->leaves);
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seq_printf(seq, "Leaves: %d\n", stat->leaves);
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bytes += sizeof(struct leaf) * stat->leaves;
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seq_printf(seq, "Internal nodes: %d\n", stat->tnodes);
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bytes += sizeof(struct tnode) * stat->tnodes;
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bytes = sizeof(struct leaf) * stat->leaves;
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seq_printf(seq, "\tInternal nodes: %d\n\t", stat->tnodes);
|
||||
bytes += sizeof(struct tnode) * stat->tnodes;
|
||||
|
||||
max = MAX_CHILDS-1;
|
||||
max = MAX_CHILDS-1;
|
||||
while (max >= 0 && stat->nodesizes[max] == 0)
|
||||
max--;
|
||||
|
||||
while (max >= 0 && stat->nodesizes[max] == 0)
|
||||
max--;
|
||||
pointers = 0;
|
||||
pointers = 0;
|
||||
for (i = 1; i <= max; i++)
|
||||
if (stat->nodesizes[i] != 0) {
|
||||
seq_printf(seq, " %d: %d", i, stat->nodesizes[i]);
|
||||
pointers += (1<<i) * stat->nodesizes[i];
|
||||
}
|
||||
seq_putc(seq, '\n');
|
||||
seq_printf(seq, "\tPointers: %d\n", pointers);
|
||||
|
||||
for (i = 1; i <= max; i++)
|
||||
if (stat->nodesizes[i] != 0) {
|
||||
seq_printf(seq, " %d: %d", i, stat->nodesizes[i]);
|
||||
pointers += (1<<i) * stat->nodesizes[i];
|
||||
}
|
||||
seq_printf(seq, "\n");
|
||||
seq_printf(seq, "Pointers: %d\n", pointers);
|
||||
bytes += sizeof(struct node *) * pointers;
|
||||
seq_printf(seq, "Null ptrs: %d\n", stat->nullpointers);
|
||||
seq_printf(seq, "Total size: %d kB\n", bytes / 1024);
|
||||
|
||||
kfree(stat);
|
||||
}
|
||||
bytes += sizeof(struct node *) * pointers;
|
||||
seq_printf(seq, "Null ptrs: %d\n", stat->nullpointers);
|
||||
seq_printf(seq, "Total size: %d kB\n", (bytes + 1023) / 1024);
|
||||
|
||||
#ifdef CONFIG_IP_FIB_TRIE_STATS
|
||||
seq_printf(seq, "Counters:\n---------\n");
|
||||
@ -2360,169 +2118,377 @@ static void collect_and_show(struct trie *t, struct seq_file *seq)
|
||||
|
||||
static int fib_triestat_seq_show(struct seq_file *seq, void *v)
|
||||
{
|
||||
char bf[128];
|
||||
struct trie_stat *stat;
|
||||
|
||||
if (v == SEQ_START_TOKEN) {
|
||||
seq_printf(seq, "Basic info: size of leaf: %Zd bytes, size of tnode: %Zd bytes.\n",
|
||||
sizeof(struct leaf), sizeof(struct tnode));
|
||||
if (trie_local)
|
||||
collect_and_show(trie_local, seq);
|
||||
stat = kmalloc(sizeof(*stat), GFP_KERNEL);
|
||||
if (!stat)
|
||||
return -ENOMEM;
|
||||
|
||||
if (trie_main)
|
||||
collect_and_show(trie_main, seq);
|
||||
} else {
|
||||
snprintf(bf, sizeof(bf), "*\t%08X\t%08X", 200, 400);
|
||||
seq_printf(seq, "Basic info: size of leaf: %Zd bytes, size of tnode: %Zd bytes.\n",
|
||||
sizeof(struct leaf), sizeof(struct tnode));
|
||||
|
||||
seq_printf(seq, "%-127s\n", bf);
|
||||
if (trie_local) {
|
||||
seq_printf(seq, "Local:\n");
|
||||
trie_collect_stats(trie_local, stat);
|
||||
trie_show_stats(seq, stat);
|
||||
}
|
||||
|
||||
if (trie_main) {
|
||||
seq_printf(seq, "Main:\n");
|
||||
trie_collect_stats(trie_main, stat);
|
||||
trie_show_stats(seq, stat);
|
||||
}
|
||||
kfree(stat);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct seq_operations fib_triestat_seq_ops = {
|
||||
.start = fib_triestat_seq_start,
|
||||
.next = fib_triestat_seq_next,
|
||||
.stop = fib_triestat_seq_stop,
|
||||
.show = fib_triestat_seq_show,
|
||||
};
|
||||
|
||||
static int fib_triestat_seq_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
struct seq_file *seq;
|
||||
int rc = -ENOMEM;
|
||||
|
||||
rc = seq_open(file, &fib_triestat_seq_ops);
|
||||
if (rc)
|
||||
goto out_kfree;
|
||||
|
||||
seq = file->private_data;
|
||||
out:
|
||||
return rc;
|
||||
out_kfree:
|
||||
goto out;
|
||||
return single_open(file, fib_triestat_seq_show, NULL);
|
||||
}
|
||||
|
||||
static struct file_operations fib_triestat_seq_fops = {
|
||||
static struct file_operations fib_triestat_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = fib_triestat_seq_open,
|
||||
.read = seq_read,
|
||||
.llseek = seq_lseek,
|
||||
.release = seq_release_private,
|
||||
.release = single_release,
|
||||
};
|
||||
|
||||
int __init fib_stat_proc_init(void)
|
||||
static struct node *fib_trie_get_idx(struct fib_trie_iter *iter,
|
||||
loff_t pos)
|
||||
{
|
||||
if (!proc_net_fops_create("fib_triestat", S_IRUGO, &fib_triestat_seq_fops))
|
||||
return -ENOMEM;
|
||||
return 0;
|
||||
}
|
||||
loff_t idx = 0;
|
||||
struct node *n;
|
||||
|
||||
void __init fib_stat_proc_exit(void)
|
||||
{
|
||||
proc_net_remove("fib_triestat");
|
||||
}
|
||||
for (n = fib_trie_get_first(iter, trie_local);
|
||||
n; ++idx, n = fib_trie_get_next(iter)) {
|
||||
if (pos == idx)
|
||||
return n;
|
||||
}
|
||||
|
||||
static struct fib_alias *fib_trie_get_first(struct seq_file *seq)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static struct fib_alias *fib_trie_get_next(struct seq_file *seq)
|
||||
{
|
||||
for (n = fib_trie_get_first(iter, trie_main);
|
||||
n; ++idx, n = fib_trie_get_next(iter)) {
|
||||
if (pos == idx)
|
||||
return n;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static void *fib_trie_seq_start(struct seq_file *seq, loff_t *pos)
|
||||
{
|
||||
if (!ip_fib_main_table)
|
||||
return NULL;
|
||||
|
||||
if (*pos)
|
||||
return fib_trie_get_next(seq);
|
||||
else
|
||||
rcu_read_lock();
|
||||
if (*pos == 0)
|
||||
return SEQ_START_TOKEN;
|
||||
return fib_trie_get_idx(seq->private, *pos - 1);
|
||||
}
|
||||
|
||||
static void *fib_trie_seq_next(struct seq_file *seq, void *v, loff_t *pos)
|
||||
{
|
||||
struct fib_trie_iter *iter = seq->private;
|
||||
void *l = v;
|
||||
|
||||
++*pos;
|
||||
if (v == SEQ_START_TOKEN)
|
||||
return fib_trie_get_first(seq);
|
||||
else
|
||||
return fib_trie_get_next(seq);
|
||||
return fib_trie_get_idx(iter, 0);
|
||||
|
||||
v = fib_trie_get_next(iter);
|
||||
BUG_ON(v == l);
|
||||
if (v)
|
||||
return v;
|
||||
|
||||
/* continue scan in next trie */
|
||||
if (iter->trie == trie_local)
|
||||
return fib_trie_get_first(iter, trie_main);
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static void fib_trie_seq_stop(struct seq_file *seq, void *v)
|
||||
{
|
||||
rcu_read_unlock();
|
||||
}
|
||||
|
||||
/*
|
||||
* This outputs /proc/net/fib_trie.
|
||||
*
|
||||
* It always works in backward compatibility mode.
|
||||
* The format of the file is not supposed to be changed.
|
||||
*/
|
||||
static void seq_indent(struct seq_file *seq, int n)
|
||||
{
|
||||
while (n-- > 0) seq_puts(seq, " ");
|
||||
}
|
||||
|
||||
static inline const char *rtn_scope(enum rt_scope_t s)
|
||||
{
|
||||
static char buf[32];
|
||||
|
||||
switch(s) {
|
||||
case RT_SCOPE_UNIVERSE: return "universe";
|
||||
case RT_SCOPE_SITE: return "site";
|
||||
case RT_SCOPE_LINK: return "link";
|
||||
case RT_SCOPE_HOST: return "host";
|
||||
case RT_SCOPE_NOWHERE: return "nowhere";
|
||||
default:
|
||||
snprintf(buf, sizeof(buf), "scope=%d", s);
|
||||
return buf;
|
||||
}
|
||||
}
|
||||
|
||||
static const char *rtn_type_names[__RTN_MAX] = {
|
||||
[RTN_UNSPEC] = "UNSPEC",
|
||||
[RTN_UNICAST] = "UNICAST",
|
||||
[RTN_LOCAL] = "LOCAL",
|
||||
[RTN_BROADCAST] = "BROADCAST",
|
||||
[RTN_ANYCAST] = "ANYCAST",
|
||||
[RTN_MULTICAST] = "MULTICAST",
|
||||
[RTN_BLACKHOLE] = "BLACKHOLE",
|
||||
[RTN_UNREACHABLE] = "UNREACHABLE",
|
||||
[RTN_PROHIBIT] = "PROHIBIT",
|
||||
[RTN_THROW] = "THROW",
|
||||
[RTN_NAT] = "NAT",
|
||||
[RTN_XRESOLVE] = "XRESOLVE",
|
||||
};
|
||||
|
||||
static inline const char *rtn_type(unsigned t)
|
||||
{
|
||||
static char buf[32];
|
||||
|
||||
if (t < __RTN_MAX && rtn_type_names[t])
|
||||
return rtn_type_names[t];
|
||||
snprintf(buf, sizeof(buf), "type %d", t);
|
||||
return buf;
|
||||
}
|
||||
|
||||
/* Pretty print the trie */
|
||||
static int fib_trie_seq_show(struct seq_file *seq, void *v)
|
||||
{
|
||||
char bf[128];
|
||||
const struct fib_trie_iter *iter = seq->private;
|
||||
struct node *n = v;
|
||||
|
||||
if (v == SEQ_START_TOKEN) {
|
||||
if (trie_local)
|
||||
trie_dump_seq(seq, trie_local);
|
||||
if (v == SEQ_START_TOKEN)
|
||||
return 0;
|
||||
|
||||
if (trie_main)
|
||||
trie_dump_seq(seq, trie_main);
|
||||
if (IS_TNODE(n)) {
|
||||
struct tnode *tn = (struct tnode *) n;
|
||||
t_key prf = ntohl(MASK_PFX(tn->key, tn->pos));
|
||||
|
||||
if (!NODE_PARENT(n)) {
|
||||
if (iter->trie == trie_local)
|
||||
seq_puts(seq, "<local>:\n");
|
||||
else
|
||||
seq_puts(seq, "<main>:\n");
|
||||
} else {
|
||||
seq_indent(seq, iter->depth-1);
|
||||
seq_printf(seq, " +-- %d.%d.%d.%d/%d\n",
|
||||
NIPQUAD(prf), tn->pos);
|
||||
}
|
||||
} else {
|
||||
snprintf(bf, sizeof(bf),
|
||||
"*\t%08X\t%08X", 200, 400);
|
||||
seq_printf(seq, "%-127s\n", bf);
|
||||
struct leaf *l = (struct leaf *) n;
|
||||
int i;
|
||||
u32 val = ntohl(l->key);
|
||||
|
||||
seq_indent(seq, iter->depth);
|
||||
seq_printf(seq, " |-- %d.%d.%d.%d\n", NIPQUAD(val));
|
||||
for (i = 32; i >= 0; i--) {
|
||||
struct leaf_info *li = find_leaf_info(&l->list, i);
|
||||
if (li) {
|
||||
struct fib_alias *fa;
|
||||
list_for_each_entry_rcu(fa, &li->falh, fa_list) {
|
||||
seq_indent(seq, iter->depth+1);
|
||||
seq_printf(seq, " /%d %s %s", i,
|
||||
rtn_scope(fa->fa_scope),
|
||||
rtn_type(fa->fa_type));
|
||||
if (fa->fa_tos)
|
||||
seq_printf(seq, "tos =%d\n",
|
||||
fa->fa_tos);
|
||||
seq_putc(seq, '\n');
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct seq_operations fib_trie_seq_ops = {
|
||||
.start = fib_trie_seq_start,
|
||||
.next = fib_trie_seq_next,
|
||||
.stop = fib_trie_seq_stop,
|
||||
.show = fib_trie_seq_show,
|
||||
.start = fib_trie_seq_start,
|
||||
.next = fib_trie_seq_next,
|
||||
.stop = fib_trie_seq_stop,
|
||||
.show = fib_trie_seq_show,
|
||||
};
|
||||
|
||||
static int fib_trie_seq_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
struct seq_file *seq;
|
||||
int rc = -ENOMEM;
|
||||
struct fib_trie_iter *s = kmalloc(sizeof(*s), GFP_KERNEL);
|
||||
|
||||
if (!s)
|
||||
goto out;
|
||||
|
||||
rc = seq_open(file, &fib_trie_seq_ops);
|
||||
if (rc)
|
||||
goto out_kfree;
|
||||
|
||||
seq = file->private_data;
|
||||
seq = file->private_data;
|
||||
seq->private = s;
|
||||
memset(s, 0, sizeof(*s));
|
||||
out:
|
||||
return rc;
|
||||
out_kfree:
|
||||
kfree(s);
|
||||
goto out;
|
||||
}
|
||||
|
||||
static struct file_operations fib_trie_seq_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = fib_trie_seq_open,
|
||||
.read = seq_read,
|
||||
.llseek = seq_lseek,
|
||||
.release= seq_release_private,
|
||||
static struct file_operations fib_trie_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = fib_trie_seq_open,
|
||||
.read = seq_read,
|
||||
.llseek = seq_lseek,
|
||||
.release = seq_release_private,
|
||||
};
|
||||
|
||||
static unsigned fib_flag_trans(int type, u32 mask, const struct fib_info *fi)
|
||||
{
|
||||
static unsigned type2flags[RTN_MAX + 1] = {
|
||||
[7] = RTF_REJECT, [8] = RTF_REJECT,
|
||||
};
|
||||
unsigned flags = type2flags[type];
|
||||
|
||||
if (fi && fi->fib_nh->nh_gw)
|
||||
flags |= RTF_GATEWAY;
|
||||
if (mask == 0xFFFFFFFF)
|
||||
flags |= RTF_HOST;
|
||||
flags |= RTF_UP;
|
||||
return flags;
|
||||
}
|
||||
|
||||
/*
|
||||
* This outputs /proc/net/route.
|
||||
* The format of the file is not supposed to be changed
|
||||
* and needs to be same as fib_hash output to avoid breaking
|
||||
* legacy utilities
|
||||
*/
|
||||
static int fib_route_seq_show(struct seq_file *seq, void *v)
|
||||
{
|
||||
struct leaf *l = v;
|
||||
int i;
|
||||
char bf[128];
|
||||
|
||||
if (v == SEQ_START_TOKEN) {
|
||||
seq_printf(seq, "%-127s\n", "Iface\tDestination\tGateway "
|
||||
"\tFlags\tRefCnt\tUse\tMetric\tMask\t\tMTU"
|
||||
"\tWindow\tIRTT");
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (IS_TNODE(l))
|
||||
return 0;
|
||||
|
||||
for (i=32; i>=0; i--) {
|
||||
struct leaf_info *li = find_leaf_info(&l->list, i);
|
||||
struct fib_alias *fa;
|
||||
u32 mask, prefix;
|
||||
|
||||
if (!li)
|
||||
continue;
|
||||
|
||||
mask = inet_make_mask(li->plen);
|
||||
prefix = htonl(l->key);
|
||||
|
||||
list_for_each_entry_rcu(fa, &li->falh, fa_list) {
|
||||
const struct fib_info *fi = rcu_dereference(fa->fa_info);
|
||||
unsigned flags = fib_flag_trans(fa->fa_type, mask, fi);
|
||||
|
||||
if (fa->fa_type == RTN_BROADCAST
|
||||
|| fa->fa_type == RTN_MULTICAST)
|
||||
continue;
|
||||
|
||||
if (fi)
|
||||
snprintf(bf, sizeof(bf),
|
||||
"%s\t%08X\t%08X\t%04X\t%d\t%u\t%d\t%08X\t%d\t%u\t%u",
|
||||
fi->fib_dev ? fi->fib_dev->name : "*",
|
||||
prefix,
|
||||
fi->fib_nh->nh_gw, flags, 0, 0,
|
||||
fi->fib_priority,
|
||||
mask,
|
||||
(fi->fib_advmss ? fi->fib_advmss + 40 : 0),
|
||||
fi->fib_window,
|
||||
fi->fib_rtt >> 3);
|
||||
else
|
||||
snprintf(bf, sizeof(bf),
|
||||
"*\t%08X\t%08X\t%04X\t%d\t%u\t%d\t%08X\t%d\t%u\t%u",
|
||||
prefix, 0, flags, 0, 0, 0,
|
||||
mask, 0, 0, 0);
|
||||
|
||||
seq_printf(seq, "%-127s\n", bf);
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct seq_operations fib_route_seq_ops = {
|
||||
.start = fib_trie_seq_start,
|
||||
.next = fib_trie_seq_next,
|
||||
.stop = fib_trie_seq_stop,
|
||||
.show = fib_route_seq_show,
|
||||
};
|
||||
|
||||
static int fib_route_seq_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
struct seq_file *seq;
|
||||
int rc = -ENOMEM;
|
||||
struct fib_trie_iter *s = kmalloc(sizeof(*s), GFP_KERNEL);
|
||||
|
||||
if (!s)
|
||||
goto out;
|
||||
|
||||
rc = seq_open(file, &fib_route_seq_ops);
|
||||
if (rc)
|
||||
goto out_kfree;
|
||||
|
||||
seq = file->private_data;
|
||||
seq->private = s;
|
||||
memset(s, 0, sizeof(*s));
|
||||
out:
|
||||
return rc;
|
||||
out_kfree:
|
||||
kfree(s);
|
||||
goto out;
|
||||
}
|
||||
|
||||
static struct file_operations fib_route_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = fib_route_seq_open,
|
||||
.read = seq_read,
|
||||
.llseek = seq_lseek,
|
||||
.release = seq_release_private,
|
||||
};
|
||||
|
||||
int __init fib_proc_init(void)
|
||||
{
|
||||
if (!proc_net_fops_create("fib_trie", S_IRUGO, &fib_trie_seq_fops))
|
||||
return -ENOMEM;
|
||||
if (!proc_net_fops_create("fib_trie", S_IRUGO, &fib_trie_fops))
|
||||
goto out1;
|
||||
|
||||
if (!proc_net_fops_create("fib_triestat", S_IRUGO, &fib_triestat_fops))
|
||||
goto out2;
|
||||
|
||||
if (!proc_net_fops_create("route", S_IRUGO, &fib_route_fops))
|
||||
goto out3;
|
||||
|
||||
return 0;
|
||||
|
||||
out3:
|
||||
proc_net_remove("fib_triestat");
|
||||
out2:
|
||||
proc_net_remove("fib_trie");
|
||||
out1:
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
void __init fib_proc_exit(void)
|
||||
{
|
||||
proc_net_remove("fib_trie");
|
||||
proc_net_remove("fib_triestat");
|
||||
proc_net_remove("route");
|
||||
}
|
||||
|
||||
#endif /* CONFIG_PROC_FS */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user