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@@ -90,14 +90,14 @@ typedef unsigned int t_key;
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#define T_LEAF 1
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#define T_LEAF 1
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#define NODE_TYPE_MASK 0x1UL
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#define NODE_TYPE_MASK 0x1UL
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#define NODE_PARENT(_node) \
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#define NODE_PARENT(_node) \
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-((struct tnode *)((_node)->_parent & ~NODE_TYPE_MASK))
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+ ((struct tnode *)((_node)->_parent & ~NODE_TYPE_MASK))
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#define NODE_SET_PARENT(_node, _ptr) \
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#define NODE_SET_PARENT(_node, _ptr) \
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-((_node)->_parent = (((unsigned long)(_ptr)) | \
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+ ((_node)->_parent = (((unsigned long)(_ptr)) | \
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((_node)->_parent & NODE_TYPE_MASK)))
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((_node)->_parent & NODE_TYPE_MASK)))
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#define NODE_INIT_PARENT(_node, _type) \
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#define NODE_INIT_PARENT(_node, _type) \
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-((_node)->_parent = (_type))
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+ ((_node)->_parent = (_type))
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#define NODE_TYPE(_node) \
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#define NODE_TYPE(_node) \
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-((_node)->_parent & NODE_TYPE_MASK)
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+ ((_node)->_parent & NODE_TYPE_MASK)
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#define IS_TNODE(n) (!(n->_parent & T_LEAF))
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#define IS_TNODE(n) (!(n->_parent & T_LEAF))
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#define IS_LEAF(n) (n->_parent & T_LEAF)
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#define IS_LEAF(n) (n->_parent & T_LEAF)
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@@ -147,7 +147,7 @@ struct trie_stat {
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unsigned int leaves;
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unsigned int leaves;
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unsigned int nullpointers;
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unsigned int nullpointers;
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unsigned int nodesizes[MAX_CHILDS];
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unsigned int nodesizes[MAX_CHILDS];
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-};
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+};
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struct trie {
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struct trie {
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struct node *trie;
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struct node *trie;
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@@ -185,9 +185,9 @@ static void trie_bug(char *err)
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BUG();
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BUG();
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}
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}
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-static inline struct node *tnode_get_child(struct tnode *tn, int i)
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+static inline struct node *tnode_get_child(struct tnode *tn, int i)
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{
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{
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- if (i >= 1<<tn->bits)
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+ if (i >= 1<<tn->bits)
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trie_bug("tnode_get_child");
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trie_bug("tnode_get_child");
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return tn->child[i];
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return tn->child[i];
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@@ -202,7 +202,7 @@ static inline int tnode_child_length(struct tnode *tn)
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_________________________________________________________________
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_________________________________________________________________
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| i | i | i | i | i | i | i | N | N | N | S | S | S | S | S | C |
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| i | i | i | i | i | i | i | N | N | N | S | S | S | S | S | C |
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----------------------------------------------------------------
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----------------------------------------------------------------
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- 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
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+ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
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_________________________________________________________________
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_________________________________________________________________
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| C | C | C | u | u | u | u | u | u | u | u | u | u | u | u | u |
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| C | C | C | u | u | u | u | u | u | u | u | u | u | u | u | u |
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@@ -226,25 +226,25 @@ static inline t_key tkey_extract_bits(t_key a, int offset, int bits)
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static inline int tkey_equals(t_key a, t_key b)
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static inline int tkey_equals(t_key a, t_key b)
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{
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{
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- return a == b;
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+ return a == b;
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}
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}
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static inline int tkey_sub_equals(t_key a, int offset, int bits, t_key b)
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static inline int tkey_sub_equals(t_key a, int offset, int bits, t_key b)
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{
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{
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- if (bits == 0 || offset >= KEYLENGTH)
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- return 1;
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+ if (bits == 0 || offset >= KEYLENGTH)
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+ return 1;
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bits = bits > KEYLENGTH ? KEYLENGTH : bits;
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bits = bits > KEYLENGTH ? KEYLENGTH : bits;
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return ((a ^ b) << offset) >> (KEYLENGTH - bits) == 0;
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return ((a ^ b) << offset) >> (KEYLENGTH - bits) == 0;
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-}
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+}
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static inline int tkey_mismatch(t_key a, int offset, t_key b)
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static inline int tkey_mismatch(t_key a, int offset, t_key b)
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{
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{
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t_key diff = a ^ b;
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t_key diff = a ^ b;
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int i = offset;
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int i = offset;
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- if(!diff)
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- return 0;
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- while((diff << i) >> (KEYLENGTH-1) == 0)
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+ if (!diff)
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+ return 0;
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+ while ((diff << i) >> (KEYLENGTH-1) == 0)
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i++;
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i++;
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return i;
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return i;
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}
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}
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@@ -314,6 +314,7 @@ static void fn_free_alias(struct fib_alias *fa)
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The bits from (n->pos) to (n->pos + n->bits - 1) - "C" - are the index into
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The bits from (n->pos) to (n->pos + n->bits - 1) - "C" - are the index into
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n's child array, and will of course be different for each child.
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n's child array, and will of course be different for each child.
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+
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The rest of the bits, from (n->pos + n->bits) onward, are completely unknown
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The rest of the bits, from (n->pos + n->bits) onward, are completely unknown
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at this point.
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at this point.
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@@ -321,7 +322,7 @@ static void fn_free_alias(struct fib_alias *fa)
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static void check_tnode(struct tnode *tn)
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static void check_tnode(struct tnode *tn)
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{
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{
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- if(tn && tn->pos+tn->bits > 32) {
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+ if (tn && tn->pos+tn->bits > 32) {
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printk("TNODE ERROR tn=%p, pos=%d, bits=%d\n", tn, tn->pos, tn->bits);
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printk("TNODE ERROR tn=%p, pos=%d, bits=%d\n", tn, tn->pos, tn->bits);
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}
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}
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}
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}
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@@ -332,7 +333,7 @@ static int inflate_threshold = 50;
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static struct leaf *leaf_new(void)
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static struct leaf *leaf_new(void)
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{
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{
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struct leaf *l = kmalloc(sizeof(struct leaf), GFP_KERNEL);
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struct leaf *l = kmalloc(sizeof(struct leaf), GFP_KERNEL);
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- if(l) {
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+ if (l) {
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NODE_INIT_PARENT(l, T_LEAF);
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NODE_INIT_PARENT(l, T_LEAF);
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INIT_HLIST_HEAD(&l->list);
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INIT_HLIST_HEAD(&l->list);
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}
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}
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@@ -342,7 +343,7 @@ static struct leaf *leaf_new(void)
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static struct leaf_info *leaf_info_new(int plen)
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static struct leaf_info *leaf_info_new(int plen)
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{
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{
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struct leaf_info *li = kmalloc(sizeof(struct leaf_info), GFP_KERNEL);
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struct leaf_info *li = kmalloc(sizeof(struct leaf_info), GFP_KERNEL);
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- if(li) {
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+ if (li) {
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li->plen = plen;
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li->plen = plen;
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INIT_LIST_HEAD(&li->falh);
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INIT_LIST_HEAD(&li->falh);
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}
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}
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@@ -365,7 +366,7 @@ static struct tnode *tnode_alloc(unsigned int size)
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return kmalloc(size, GFP_KERNEL);
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return kmalloc(size, GFP_KERNEL);
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} else {
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} else {
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return (struct tnode *)
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return (struct tnode *)
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- __get_free_pages(GFP_KERNEL, get_order(size));
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+ __get_free_pages(GFP_KERNEL, get_order(size));
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}
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}
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}
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}
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@@ -386,7 +387,7 @@ static struct tnode* tnode_new(t_key key, int pos, int bits)
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int sz = sizeof(struct tnode) + nchildren * sizeof(struct node *);
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int sz = sizeof(struct tnode) + nchildren * sizeof(struct node *);
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struct tnode *tn = tnode_alloc(sz);
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struct tnode *tn = tnode_alloc(sz);
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- if(tn) {
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+ if (tn) {
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memset(tn, 0, sz);
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memset(tn, 0, sz);
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NODE_INIT_PARENT(tn, T_TNODE);
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NODE_INIT_PARENT(tn, T_TNODE);
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tn->pos = pos;
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tn->pos = pos;
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@@ -395,7 +396,8 @@ static struct tnode* tnode_new(t_key key, int pos, int bits)
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tn->full_children = 0;
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tn->full_children = 0;
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tn->empty_children = 1<<bits;
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tn->empty_children = 1<<bits;
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}
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}
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- if(trie_debug > 0)
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+
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+ if (trie_debug > 0)
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printk("AT %p s=%u %u\n", tn, (unsigned int) sizeof(struct tnode),
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printk("AT %p s=%u %u\n", tn, (unsigned int) sizeof(struct tnode),
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(unsigned int) (sizeof(struct node) * 1<<bits));
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(unsigned int) (sizeof(struct node) * 1<<bits));
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return tn;
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return tn;
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@@ -403,17 +405,17 @@ static struct tnode* tnode_new(t_key key, int pos, int bits)
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static void tnode_free(struct tnode *tn)
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static void tnode_free(struct tnode *tn)
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{
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{
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- if(!tn) {
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+ if (!tn) {
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trie_bug("tnode_free\n");
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trie_bug("tnode_free\n");
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}
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}
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- if(IS_LEAF(tn)) {
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+ if (IS_LEAF(tn)) {
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free_leaf((struct leaf *)tn);
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free_leaf((struct leaf *)tn);
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- if(trie_debug > 0 )
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+ if (trie_debug > 0 )
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printk("FL %p \n", tn);
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printk("FL %p \n", tn);
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}
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}
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- else if(IS_TNODE(tn)) {
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+ else if (IS_TNODE(tn)) {
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__tnode_free(tn);
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__tnode_free(tn);
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- if(trie_debug > 0 )
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+ if (trie_debug > 0 )
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printk("FT %p \n", tn);
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printk("FT %p \n", tn);
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}
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}
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else {
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else {
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@@ -428,58 +430,58 @@ static void tnode_free(struct tnode *tn)
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static inline int tnode_full(struct tnode *tn, struct node *n)
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static inline int tnode_full(struct tnode *tn, struct node *n)
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{
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{
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- if(n == NULL || IS_LEAF(n))
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+ if (n == NULL || IS_LEAF(n))
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return 0;
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return 0;
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return ((struct tnode *) n)->pos == tn->pos + tn->bits;
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return ((struct tnode *) n)->pos == tn->pos + tn->bits;
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}
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}
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-static inline void put_child(struct trie *t, struct tnode *tn, int i, struct node *n)
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+static inline void put_child(struct trie *t, struct tnode *tn, int i, struct node *n)
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{
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{
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tnode_put_child_reorg(tn, i, n, -1);
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tnode_put_child_reorg(tn, i, n, -1);
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}
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}
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- /*
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+ /*
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* Add a child at position i overwriting the old value.
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* Add a child at position i overwriting the old value.
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* Update the value of full_children and empty_children.
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* Update the value of full_children and empty_children.
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*/
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*/
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-static void tnode_put_child_reorg(struct tnode *tn, int i, struct node *n, int wasfull)
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+static void tnode_put_child_reorg(struct tnode *tn, int i, struct node *n, int wasfull)
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{
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{
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struct node *chi;
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struct node *chi;
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int isfull;
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int isfull;
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- if(i >= 1<<tn->bits) {
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+ if (i >= 1<<tn->bits) {
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printk("bits=%d, i=%d\n", tn->bits, i);
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printk("bits=%d, i=%d\n", tn->bits, i);
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trie_bug("tnode_put_child_reorg bits");
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trie_bug("tnode_put_child_reorg bits");
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}
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}
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write_lock_bh(&fib_lock);
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write_lock_bh(&fib_lock);
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- chi = tn->child[i];
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+ chi = tn->child[i];
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/* update emptyChildren */
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/* update emptyChildren */
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if (n == NULL && chi != NULL)
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if (n == NULL && chi != NULL)
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tn->empty_children++;
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tn->empty_children++;
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else if (n != NULL && chi == NULL)
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else if (n != NULL && chi == NULL)
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tn->empty_children--;
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tn->empty_children--;
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-
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+
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/* update fullChildren */
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/* update fullChildren */
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if (wasfull == -1)
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if (wasfull == -1)
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wasfull = tnode_full(tn, chi);
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wasfull = tnode_full(tn, chi);
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isfull = tnode_full(tn, n);
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isfull = tnode_full(tn, n);
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- if (wasfull && !isfull)
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+ if (wasfull && !isfull)
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tn->full_children--;
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tn->full_children--;
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-
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- else if (!wasfull && isfull)
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+
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+ else if (!wasfull && isfull)
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tn->full_children++;
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tn->full_children++;
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- if(n)
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- NODE_SET_PARENT(n, tn);
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+ if (n)
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+ NODE_SET_PARENT(n, tn);
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tn->child[i] = n;
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tn->child[i] = n;
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write_unlock_bh(&fib_lock);
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write_unlock_bh(&fib_lock);
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}
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}
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-static struct node *resize(struct trie *t, struct tnode *tn)
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+static struct node *resize(struct trie *t, struct tnode *tn)
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{
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{
|
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int i;
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int i;
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int err = 0;
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int err = 0;
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@@ -487,8 +489,8 @@ static struct node *resize(struct trie *t, struct tnode *tn)
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if (!tn)
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if (!tn)
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return NULL;
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return NULL;
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- if(trie_debug)
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- printk("In tnode_resize %p inflate_threshold=%d threshold=%d\n",
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+ if (trie_debug)
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+ printk("In tnode_resize %p inflate_threshold=%d threshold=%d\n",
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tn, inflate_threshold, halve_threshold);
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tn, inflate_threshold, halve_threshold);
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/* No children */
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/* No children */
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@@ -505,7 +507,7 @@ static struct node *resize(struct trie *t, struct tnode *tn)
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/* compress one level */
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/* compress one level */
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struct node *n = tn->child[i];
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struct node *n = tn->child[i];
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- if(n)
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+ if (n)
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NODE_INIT_PARENT(n, NODE_TYPE(n));
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NODE_INIT_PARENT(n, NODE_TYPE(n));
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|
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write_unlock_bh(&fib_lock);
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write_unlock_bh(&fib_lock);
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@@ -514,72 +516,72 @@ static struct node *resize(struct trie *t, struct tnode *tn)
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}
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}
|
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write_unlock_bh(&fib_lock);
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write_unlock_bh(&fib_lock);
|
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}
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}
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- /*
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+ /*
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* Double as long as the resulting node has a number of
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* Double as long as the resulting node has a number of
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* nonempty nodes that are above the threshold.
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* nonempty nodes that are above the threshold.
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*/
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*/
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|
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/*
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/*
|
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- * From "Implementing a dynamic compressed trie" by Stefan Nilsson of
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|
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- * the Helsinki University of Technology and Matti Tikkanen of Nokia
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+ * From "Implementing a dynamic compressed trie" by Stefan Nilsson of
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+ * the Helsinki University of Technology and Matti Tikkanen of Nokia
|
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* Telecommunications, page 6:
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* Telecommunications, page 6:
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- * "A node is doubled if the ratio of non-empty children to all
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+ * "A node is doubled if the ratio of non-empty children to all
|
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* children in the *doubled* node is at least 'high'."
|
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* children in the *doubled* node is at least 'high'."
|
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*
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*
|
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- * 'high' in this instance is the variable 'inflate_threshold'. It
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|
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- * is expressed as a percentage, so we multiply it with
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|
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- * tnode_child_length() and instead of multiplying by 2 (since the
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|
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- * child array will be doubled by inflate()) and multiplying
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|
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- * the left-hand side by 100 (to handle the percentage thing) we
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|
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+ * 'high' in this instance is the variable 'inflate_threshold'. It
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|
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+ * is expressed as a percentage, so we multiply it with
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|
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+ * tnode_child_length() and instead of multiplying by 2 (since the
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|
|
+ * child array will be doubled by inflate()) and multiplying
|
|
|
|
+ * the left-hand side by 100 (to handle the percentage thing) we
|
|
* multiply the left-hand side by 50.
|
|
* multiply the left-hand side by 50.
|
|
- *
|
|
|
|
- * The left-hand side may look a bit weird: tnode_child_length(tn)
|
|
|
|
- * - tn->empty_children is of course the number of non-null children
|
|
|
|
- * in the current node. tn->full_children is the number of "full"
|
|
|
|
|
|
+ *
|
|
|
|
+ * The left-hand side may look a bit weird: tnode_child_length(tn)
|
|
|
|
+ * - tn->empty_children is of course the number of non-null children
|
|
|
|
+ * in the current node. tn->full_children is the number of "full"
|
|
* children, that is non-null tnodes with a skip value of 0.
|
|
* children, that is non-null tnodes with a skip value of 0.
|
|
- * All of those will be doubled in the resulting inflated tnode, so
|
|
|
|
|
|
+ * All of those will be doubled in the resulting inflated tnode, so
|
|
* we just count them one extra time here.
|
|
* we just count them one extra time here.
|
|
- *
|
|
|
|
|
|
+ *
|
|
* A clearer way to write this would be:
|
|
* A clearer way to write this would be:
|
|
- *
|
|
|
|
|
|
+ *
|
|
* to_be_doubled = tn->full_children;
|
|
* to_be_doubled = tn->full_children;
|
|
- * not_to_be_doubled = tnode_child_length(tn) - tn->empty_children -
|
|
|
|
|
|
+ * not_to_be_doubled = tnode_child_length(tn) - tn->empty_children -
|
|
* tn->full_children;
|
|
* tn->full_children;
|
|
*
|
|
*
|
|
* new_child_length = tnode_child_length(tn) * 2;
|
|
* new_child_length = tnode_child_length(tn) * 2;
|
|
*
|
|
*
|
|
- * new_fill_factor = 100 * (not_to_be_doubled + 2*to_be_doubled) /
|
|
|
|
|
|
+ * new_fill_factor = 100 * (not_to_be_doubled + 2*to_be_doubled) /
|
|
* new_child_length;
|
|
* new_child_length;
|
|
* if (new_fill_factor >= inflate_threshold)
|
|
* if (new_fill_factor >= inflate_threshold)
|
|
- *
|
|
|
|
- * ...and so on, tho it would mess up the while() loop.
|
|
|
|
- *
|
|
|
|
|
|
+ *
|
|
|
|
+ * ...and so on, tho it would mess up the while () loop.
|
|
|
|
+ *
|
|
* anyway,
|
|
* anyway,
|
|
* 100 * (not_to_be_doubled + 2*to_be_doubled) / new_child_length >=
|
|
* 100 * (not_to_be_doubled + 2*to_be_doubled) / new_child_length >=
|
|
* inflate_threshold
|
|
* inflate_threshold
|
|
- *
|
|
|
|
|
|
+ *
|
|
* avoid a division:
|
|
* avoid a division:
|
|
* 100 * (not_to_be_doubled + 2*to_be_doubled) >=
|
|
* 100 * (not_to_be_doubled + 2*to_be_doubled) >=
|
|
* inflate_threshold * new_child_length
|
|
* inflate_threshold * new_child_length
|
|
- *
|
|
|
|
|
|
+ *
|
|
* expand not_to_be_doubled and to_be_doubled, and shorten:
|
|
* expand not_to_be_doubled and to_be_doubled, and shorten:
|
|
- * 100 * (tnode_child_length(tn) - tn->empty_children +
|
|
|
|
|
|
+ * 100 * (tnode_child_length(tn) - tn->empty_children +
|
|
* tn->full_children ) >= inflate_threshold * new_child_length
|
|
* tn->full_children ) >= inflate_threshold * new_child_length
|
|
- *
|
|
|
|
|
|
+ *
|
|
* expand new_child_length:
|
|
* expand new_child_length:
|
|
- * 100 * (tnode_child_length(tn) - tn->empty_children +
|
|
|
|
|
|
+ * 100 * (tnode_child_length(tn) - tn->empty_children +
|
|
* tn->full_children ) >=
|
|
* tn->full_children ) >=
|
|
* inflate_threshold * tnode_child_length(tn) * 2
|
|
* inflate_threshold * tnode_child_length(tn) * 2
|
|
- *
|
|
|
|
|
|
+ *
|
|
* shorten again:
|
|
* shorten again:
|
|
- * 50 * (tn->full_children + tnode_child_length(tn) -
|
|
|
|
- * tn->empty_children ) >= inflate_threshold *
|
|
|
|
|
|
+ * 50 * (tn->full_children + tnode_child_length(tn) -
|
|
|
|
+ * tn->empty_children ) >= inflate_threshold *
|
|
* tnode_child_length(tn)
|
|
* tnode_child_length(tn)
|
|
- *
|
|
|
|
|
|
+ *
|
|
*/
|
|
*/
|
|
|
|
|
|
check_tnode(tn);
|
|
check_tnode(tn);
|
|
-
|
|
|
|
|
|
+
|
|
err = 0;
|
|
err = 0;
|
|
while ((tn->full_children > 0 &&
|
|
while ((tn->full_children > 0 &&
|
|
50 * (tn->full_children + tnode_child_length(tn) - tn->empty_children) >=
|
|
50 * (tn->full_children + tnode_child_length(tn) - tn->empty_children) >=
|
|
@@ -587,7 +589,7 @@ static struct node *resize(struct trie *t, struct tnode *tn)
|
|
|
|
|
|
tn = inflate(t, tn, &err);
|
|
tn = inflate(t, tn, &err);
|
|
|
|
|
|
- if(err) {
|
|
|
|
|
|
+ if (err) {
|
|
#ifdef CONFIG_IP_FIB_TRIE_STATS
|
|
#ifdef CONFIG_IP_FIB_TRIE_STATS
|
|
t->stats.resize_node_skipped++;
|
|
t->stats.resize_node_skipped++;
|
|
#endif
|
|
#endif
|
|
@@ -609,7 +611,7 @@ static struct node *resize(struct trie *t, struct tnode *tn)
|
|
|
|
|
|
tn = halve(t, tn, &err);
|
|
tn = halve(t, tn, &err);
|
|
|
|
|
|
- if(err) {
|
|
|
|
|
|
+ if (err) {
|
|
#ifdef CONFIG_IP_FIB_TRIE_STATS
|
|
#ifdef CONFIG_IP_FIB_TRIE_STATS
|
|
t->stats.resize_node_skipped++;
|
|
t->stats.resize_node_skipped++;
|
|
#endif
|
|
#endif
|
|
@@ -617,18 +619,18 @@ static struct node *resize(struct trie *t, struct tnode *tn)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
-
|
|
|
|
|
|
+
|
|
/* Only one child remains */
|
|
/* Only one child remains */
|
|
|
|
|
|
if (tn->empty_children == tnode_child_length(tn) - 1)
|
|
if (tn->empty_children == tnode_child_length(tn) - 1)
|
|
for (i = 0; i < tnode_child_length(tn); i++) {
|
|
for (i = 0; i < tnode_child_length(tn); i++) {
|
|
-
|
|
|
|
|
|
+
|
|
write_lock_bh(&fib_lock);
|
|
write_lock_bh(&fib_lock);
|
|
if (tn->child[i] != NULL) {
|
|
if (tn->child[i] != NULL) {
|
|
/* compress one level */
|
|
/* compress one level */
|
|
struct node *n = tn->child[i];
|
|
struct node *n = tn->child[i];
|
|
|
|
|
|
- if(n)
|
|
|
|
|
|
+ if (n)
|
|
NODE_INIT_PARENT(n, NODE_TYPE(n));
|
|
NODE_INIT_PARENT(n, NODE_TYPE(n));
|
|
|
|
|
|
write_unlock_bh(&fib_lock);
|
|
write_unlock_bh(&fib_lock);
|
|
@@ -648,7 +650,7 @@ static struct tnode *inflate(struct trie *t, struct tnode *tn, int *err)
|
|
int olen = tnode_child_length(tn);
|
|
int olen = tnode_child_length(tn);
|
|
int i;
|
|
int i;
|
|
|
|
|
|
- if(trie_debug)
|
|
|
|
|
|
+ if (trie_debug)
|
|
printk("In inflate\n");
|
|
printk("In inflate\n");
|
|
|
|
|
|
tn = tnode_new(oldtnode->key, oldtnode->pos, oldtnode->bits + 1);
|
|
tn = tnode_new(oldtnode->key, oldtnode->pos, oldtnode->bits + 1);
|
|
@@ -659,12 +661,12 @@ static struct tnode *inflate(struct trie *t, struct tnode *tn, int *err)
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
/*
|
|
- * Preallocate and store tnodes before the actual work so we
|
|
|
|
- * don't get into an inconsistent state if memory allocation
|
|
|
|
- * fails. In case of failure we return the oldnode and inflate
|
|
|
|
|
|
+ * Preallocate and store tnodes before the actual work so we
|
|
|
|
+ * don't get into an inconsistent state if memory allocation
|
|
|
|
+ * fails. In case of failure we return the oldnode and inflate
|
|
* of tnode is ignored.
|
|
* of tnode is ignored.
|
|
*/
|
|
*/
|
|
-
|
|
|
|
|
|
+
|
|
for(i = 0; i < olen; i++) {
|
|
for(i = 0; i < olen; i++) {
|
|
struct tnode *inode = (struct tnode *) tnode_get_child(oldtnode, i);
|
|
struct tnode *inode = (struct tnode *) tnode_get_child(oldtnode, i);
|
|
|
|
|
|
@@ -675,20 +677,20 @@ static struct tnode *inflate(struct trie *t, struct tnode *tn, int *err)
|
|
struct tnode *left, *right;
|
|
struct tnode *left, *right;
|
|
|
|
|
|
t_key m = TKEY_GET_MASK(inode->pos, 1);
|
|
t_key m = TKEY_GET_MASK(inode->pos, 1);
|
|
-
|
|
|
|
|
|
+
|
|
left = tnode_new(inode->key&(~m), inode->pos + 1,
|
|
left = tnode_new(inode->key&(~m), inode->pos + 1,
|
|
inode->bits - 1);
|
|
inode->bits - 1);
|
|
|
|
|
|
- if(!left) {
|
|
|
|
- *err = -ENOMEM;
|
|
|
|
|
|
+ if (!left) {
|
|
|
|
+ *err = -ENOMEM;
|
|
break;
|
|
break;
|
|
}
|
|
}
|
|
-
|
|
|
|
|
|
+
|
|
right = tnode_new(inode->key|m, inode->pos + 1,
|
|
right = tnode_new(inode->key|m, inode->pos + 1,
|
|
inode->bits - 1);
|
|
inode->bits - 1);
|
|
|
|
|
|
- if(!right) {
|
|
|
|
- *err = -ENOMEM;
|
|
|
|
|
|
+ if (!right) {
|
|
|
|
+ *err = -ENOMEM;
|
|
break;
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
@@ -697,32 +699,32 @@ static struct tnode *inflate(struct trie *t, struct tnode *tn, int *err)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
- if(*err) {
|
|
|
|
|
|
+ if (*err) {
|
|
int size = tnode_child_length(tn);
|
|
int size = tnode_child_length(tn);
|
|
int j;
|
|
int j;
|
|
|
|
|
|
- for(j = 0; j < size; j++)
|
|
|
|
- if( tn->child[j])
|
|
|
|
|
|
+ for(j = 0; j < size; j++)
|
|
|
|
+ if (tn->child[j])
|
|
tnode_free((struct tnode *)tn->child[j]);
|
|
tnode_free((struct tnode *)tn->child[j]);
|
|
|
|
|
|
tnode_free(tn);
|
|
tnode_free(tn);
|
|
-
|
|
|
|
|
|
+
|
|
*err = -ENOMEM;
|
|
*err = -ENOMEM;
|
|
return oldtnode;
|
|
return oldtnode;
|
|
}
|
|
}
|
|
|
|
|
|
for(i = 0; i < olen; i++) {
|
|
for(i = 0; i < olen; i++) {
|
|
struct node *node = tnode_get_child(oldtnode, i);
|
|
struct node *node = tnode_get_child(oldtnode, i);
|
|
-
|
|
|
|
|
|
+
|
|
/* An empty child */
|
|
/* An empty child */
|
|
if (node == NULL)
|
|
if (node == NULL)
|
|
continue;
|
|
continue;
|
|
|
|
|
|
/* A leaf or an internal node with skipped bits */
|
|
/* A leaf or an internal node with skipped bits */
|
|
|
|
|
|
- if(IS_LEAF(node) || ((struct tnode *) node)->pos >
|
|
|
|
|
|
+ if (IS_LEAF(node) || ((struct tnode *) node)->pos >
|
|
tn->pos + tn->bits - 1) {
|
|
tn->pos + tn->bits - 1) {
|
|
- if(tkey_extract_bits(node->key, oldtnode->pos + oldtnode->bits,
|
|
|
|
|
|
+ if (tkey_extract_bits(node->key, oldtnode->pos + oldtnode->bits,
|
|
1) == 0)
|
|
1) == 0)
|
|
put_child(t, tn, 2*i, node);
|
|
put_child(t, tn, 2*i, node);
|
|
else
|
|
else
|
|
@@ -745,37 +747,37 @@ static struct tnode *inflate(struct trie *t, struct tnode *tn, int *err)
|
|
struct tnode *left, *right;
|
|
struct tnode *left, *right;
|
|
int size, j;
|
|
int size, j;
|
|
|
|
|
|
- /* We will replace this node 'inode' with two new
|
|
|
|
- * ones, 'left' and 'right', each with half of the
|
|
|
|
- * original children. The two new nodes will have
|
|
|
|
- * a position one bit further down the key and this
|
|
|
|
- * means that the "significant" part of their keys
|
|
|
|
- * (see the discussion near the top of this file)
|
|
|
|
- * will differ by one bit, which will be "0" in
|
|
|
|
- * left's key and "1" in right's key. Since we are
|
|
|
|
- * moving the key position by one step, the bit that
|
|
|
|
- * we are moving away from - the bit at position
|
|
|
|
- * (inode->pos) - is the one that will differ between
|
|
|
|
|
|
+ /* We will replace this node 'inode' with two new
|
|
|
|
+ * ones, 'left' and 'right', each with half of the
|
|
|
|
+ * original children. The two new nodes will have
|
|
|
|
+ * a position one bit further down the key and this
|
|
|
|
+ * means that the "significant" part of their keys
|
|
|
|
+ * (see the discussion near the top of this file)
|
|
|
|
+ * will differ by one bit, which will be "0" in
|
|
|
|
+ * left's key and "1" in right's key. Since we are
|
|
|
|
+ * moving the key position by one step, the bit that
|
|
|
|
+ * we are moving away from - the bit at position
|
|
|
|
+ * (inode->pos) - is the one that will differ between
|
|
* left and right. So... we synthesize that bit in the
|
|
* left and right. So... we synthesize that bit in the
|
|
* two new keys.
|
|
* two new keys.
|
|
- * The mask 'm' below will be a single "one" bit at
|
|
|
|
|
|
+ * The mask 'm' below will be a single "one" bit at
|
|
* the position (inode->pos)
|
|
* the position (inode->pos)
|
|
*/
|
|
*/
|
|
|
|
|
|
- /* Use the old key, but set the new significant
|
|
|
|
- * bit to zero.
|
|
|
|
|
|
+ /* Use the old key, but set the new significant
|
|
|
|
+ * bit to zero.
|
|
*/
|
|
*/
|
|
|
|
|
|
left = (struct tnode *) tnode_get_child(tn, 2*i);
|
|
left = (struct tnode *) tnode_get_child(tn, 2*i);
|
|
put_child(t, tn, 2*i, NULL);
|
|
put_child(t, tn, 2*i, NULL);
|
|
|
|
|
|
- if(!left)
|
|
|
|
|
|
+ if (!left)
|
|
BUG();
|
|
BUG();
|
|
|
|
|
|
right = (struct tnode *) tnode_get_child(tn, 2*i+1);
|
|
right = (struct tnode *) tnode_get_child(tn, 2*i+1);
|
|
put_child(t, tn, 2*i+1, NULL);
|
|
put_child(t, tn, 2*i+1, NULL);
|
|
|
|
|
|
- if(!right)
|
|
|
|
|
|
+ if (!right)
|
|
BUG();
|
|
BUG();
|
|
|
|
|
|
size = tnode_child_length(left);
|
|
size = tnode_child_length(left);
|
|
@@ -800,9 +802,9 @@ static struct tnode *halve(struct trie *t, struct tnode *tn, int *err)
|
|
int i;
|
|
int i;
|
|
int olen = tnode_child_length(tn);
|
|
int olen = tnode_child_length(tn);
|
|
|
|
|
|
- if(trie_debug) printk("In halve\n");
|
|
|
|
-
|
|
|
|
- tn=tnode_new(oldtnode->key, oldtnode->pos, oldtnode->bits - 1);
|
|
|
|
|
|
+ if (trie_debug) printk("In halve\n");
|
|
|
|
+
|
|
|
|
+ tn = tnode_new(oldtnode->key, oldtnode->pos, oldtnode->bits - 1);
|
|
|
|
|
|
if (!tn) {
|
|
if (!tn) {
|
|
*err = -ENOMEM;
|
|
*err = -ENOMEM;
|
|
@@ -810,39 +812,39 @@ static struct tnode *halve(struct trie *t, struct tnode *tn, int *err)
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
/*
|
|
- * Preallocate and store tnodes before the actual work so we
|
|
|
|
- * don't get into an inconsistent state if memory allocation
|
|
|
|
- * fails. In case of failure we return the oldnode and halve
|
|
|
|
|
|
+ * Preallocate and store tnodes before the actual work so we
|
|
|
|
+ * don't get into an inconsistent state if memory allocation
|
|
|
|
+ * fails. In case of failure we return the oldnode and halve
|
|
* of tnode is ignored.
|
|
* of tnode is ignored.
|
|
*/
|
|
*/
|
|
|
|
|
|
for(i = 0; i < olen; i += 2) {
|
|
for(i = 0; i < olen; i += 2) {
|
|
left = tnode_get_child(oldtnode, i);
|
|
left = tnode_get_child(oldtnode, i);
|
|
right = tnode_get_child(oldtnode, i+1);
|
|
right = tnode_get_child(oldtnode, i+1);
|
|
-
|
|
|
|
|
|
+
|
|
/* Two nonempty children */
|
|
/* Two nonempty children */
|
|
- if( left && right) {
|
|
|
|
|
|
+ if (left && right) {
|
|
struct tnode *newBinNode =
|
|
struct tnode *newBinNode =
|
|
tnode_new(left->key, tn->pos + tn->bits, 1);
|
|
tnode_new(left->key, tn->pos + tn->bits, 1);
|
|
|
|
|
|
- if(!newBinNode) {
|
|
|
|
- *err = -ENOMEM;
|
|
|
|
|
|
+ if (!newBinNode) {
|
|
|
|
+ *err = -ENOMEM;
|
|
break;
|
|
break;
|
|
}
|
|
}
|
|
put_child(t, tn, i/2, (struct node *)newBinNode);
|
|
put_child(t, tn, i/2, (struct node *)newBinNode);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
- if(*err) {
|
|
|
|
|
|
+ if (*err) {
|
|
int size = tnode_child_length(tn);
|
|
int size = tnode_child_length(tn);
|
|
int j;
|
|
int j;
|
|
|
|
|
|
- for(j = 0; j < size; j++)
|
|
|
|
- if( tn->child[j])
|
|
|
|
|
|
+ for(j = 0; j < size; j++)
|
|
|
|
+ if (tn->child[j])
|
|
tnode_free((struct tnode *)tn->child[j]);
|
|
tnode_free((struct tnode *)tn->child[j]);
|
|
|
|
|
|
tnode_free(tn);
|
|
tnode_free(tn);
|
|
-
|
|
|
|
|
|
+
|
|
*err = -ENOMEM;
|
|
*err = -ENOMEM;
|
|
return oldtnode;
|
|
return oldtnode;
|
|
}
|
|
}
|
|
@@ -850,7 +852,7 @@ static struct tnode *halve(struct trie *t, struct tnode *tn, int *err)
|
|
for(i = 0; i < olen; i += 2) {
|
|
for(i = 0; i < olen; i += 2) {
|
|
left = tnode_get_child(oldtnode, i);
|
|
left = tnode_get_child(oldtnode, i);
|
|
right = tnode_get_child(oldtnode, i+1);
|
|
right = tnode_get_child(oldtnode, i+1);
|
|
-
|
|
|
|
|
|
+
|
|
/* At least one of the children is empty */
|
|
/* At least one of the children is empty */
|
|
if (left == NULL) {
|
|
if (left == NULL) {
|
|
if (right == NULL) /* Both are empty */
|
|
if (right == NULL) /* Both are empty */
|
|
@@ -858,14 +860,14 @@ static struct tnode *halve(struct trie *t, struct tnode *tn, int *err)
|
|
put_child(t, tn, i/2, right);
|
|
put_child(t, tn, i/2, right);
|
|
} else if (right == NULL)
|
|
} else if (right == NULL)
|
|
put_child(t, tn, i/2, left);
|
|
put_child(t, tn, i/2, left);
|
|
-
|
|
|
|
|
|
+
|
|
/* Two nonempty children */
|
|
/* Two nonempty children */
|
|
else {
|
|
else {
|
|
struct tnode *newBinNode =
|
|
struct tnode *newBinNode =
|
|
(struct tnode *) tnode_get_child(tn, i/2);
|
|
(struct tnode *) tnode_get_child(tn, i/2);
|
|
put_child(t, tn, i/2, NULL);
|
|
put_child(t, tn, i/2, NULL);
|
|
|
|
|
|
- if(!newBinNode)
|
|
|
|
|
|
+ if (!newBinNode)
|
|
BUG();
|
|
BUG();
|
|
|
|
|
|
put_child(t, newBinNode, 0, left);
|
|
put_child(t, newBinNode, 0, left);
|
|
@@ -879,7 +881,7 @@ static struct tnode *halve(struct trie *t, struct tnode *tn, int *err)
|
|
|
|
|
|
static void *trie_init(struct trie *t)
|
|
static void *trie_init(struct trie *t)
|
|
{
|
|
{
|
|
- if(t) {
|
|
|
|
|
|
+ if (t) {
|
|
t->size = 0;
|
|
t->size = 0;
|
|
t->trie = NULL;
|
|
t->trie = NULL;
|
|
t->revision = 0;
|
|
t->revision = 0;
|
|
@@ -896,8 +898,7 @@ static struct leaf_info *find_leaf_info(struct hlist_head *head, int plen)
|
|
struct leaf_info *li;
|
|
struct leaf_info *li;
|
|
|
|
|
|
hlist_for_each_entry(li, node, head, hlist) {
|
|
hlist_for_each_entry(li, node, head, hlist) {
|
|
-
|
|
|
|
- if ( li->plen == plen )
|
|
|
|
|
|
+ if (li->plen == plen)
|
|
return li;
|
|
return li;
|
|
}
|
|
}
|
|
return NULL;
|
|
return NULL;
|
|
@@ -905,35 +906,35 @@ static struct leaf_info *find_leaf_info(struct hlist_head *head, int plen)
|
|
|
|
|
|
static inline struct list_head * get_fa_head(struct leaf *l, int plen)
|
|
static inline struct list_head * get_fa_head(struct leaf *l, int plen)
|
|
{
|
|
{
|
|
- struct list_head *fa_head=NULL;
|
|
|
|
|
|
+ struct list_head *fa_head = NULL;
|
|
struct leaf_info *li = find_leaf_info(&l->list, plen);
|
|
struct leaf_info *li = find_leaf_info(&l->list, plen);
|
|
-
|
|
|
|
- if(li)
|
|
|
|
|
|
+
|
|
|
|
+ if (li)
|
|
fa_head = &li->falh;
|
|
fa_head = &li->falh;
|
|
-
|
|
|
|
|
|
+
|
|
return fa_head;
|
|
return fa_head;
|
|
}
|
|
}
|
|
|
|
|
|
static void insert_leaf_info(struct hlist_head *head, struct leaf_info *new)
|
|
static void insert_leaf_info(struct hlist_head *head, struct leaf_info *new)
|
|
{
|
|
{
|
|
- struct leaf_info *li=NULL, *last=NULL;
|
|
|
|
|
|
+ struct leaf_info *li = NULL, *last = NULL;
|
|
struct hlist_node *node, *tmp;
|
|
struct hlist_node *node, *tmp;
|
|
|
|
|
|
write_lock_bh(&fib_lock);
|
|
write_lock_bh(&fib_lock);
|
|
-
|
|
|
|
- if(hlist_empty(head))
|
|
|
|
|
|
+
|
|
|
|
+ if (hlist_empty(head))
|
|
hlist_add_head(&new->hlist, head);
|
|
hlist_add_head(&new->hlist, head);
|
|
else {
|
|
else {
|
|
hlist_for_each_entry_safe(li, node, tmp, head, hlist) {
|
|
hlist_for_each_entry_safe(li, node, tmp, head, hlist) {
|
|
-
|
|
|
|
- if (new->plen > li->plen)
|
|
|
|
|
|
+
|
|
|
|
+ if (new->plen > li->plen)
|
|
break;
|
|
break;
|
|
-
|
|
|
|
|
|
+
|
|
last = li;
|
|
last = li;
|
|
}
|
|
}
|
|
- if(last)
|
|
|
|
|
|
+ if (last)
|
|
hlist_add_after(&last->hlist, &new->hlist);
|
|
hlist_add_after(&last->hlist, &new->hlist);
|
|
- else
|
|
|
|
|
|
+ else
|
|
hlist_add_before(&new->hlist, &li->hlist);
|
|
hlist_add_before(&new->hlist, &li->hlist);
|
|
}
|
|
}
|
|
write_unlock_bh(&fib_lock);
|
|
write_unlock_bh(&fib_lock);
|
|
@@ -947,14 +948,14 @@ fib_find_node(struct trie *t, u32 key)
|
|
struct node *n;
|
|
struct node *n;
|
|
|
|
|
|
pos = 0;
|
|
pos = 0;
|
|
- n=t->trie;
|
|
|
|
|
|
+ n = t->trie;
|
|
|
|
|
|
while (n != NULL && NODE_TYPE(n) == T_TNODE) {
|
|
while (n != NULL && NODE_TYPE(n) == T_TNODE) {
|
|
tn = (struct tnode *) n;
|
|
tn = (struct tnode *) n;
|
|
-
|
|
|
|
|
|
+
|
|
check_tnode(tn);
|
|
check_tnode(tn);
|
|
-
|
|
|
|
- if(tkey_sub_equals(tn->key, pos, tn->pos-pos, key)) {
|
|
|
|
|
|
+
|
|
|
|
+ if (tkey_sub_equals(tn->key, pos, tn->pos-pos, key)) {
|
|
pos=tn->pos + tn->bits;
|
|
pos=tn->pos + tn->bits;
|
|
n = tnode_get_child(tn, tkey_extract_bits(key, tn->pos, tn->bits));
|
|
n = tnode_get_child(tn, tkey_extract_bits(key, tn->pos, tn->bits));
|
|
}
|
|
}
|
|
@@ -977,23 +978,23 @@ static struct node *trie_rebalance(struct trie *t, struct tnode *tn)
|
|
t_key cindex, key;
|
|
t_key cindex, key;
|
|
struct tnode *tp = NULL;
|
|
struct tnode *tp = NULL;
|
|
|
|
|
|
- if(!tn)
|
|
|
|
|
|
+ if (!tn)
|
|
BUG();
|
|
BUG();
|
|
-
|
|
|
|
|
|
+
|
|
key = tn->key;
|
|
key = tn->key;
|
|
i = 0;
|
|
i = 0;
|
|
|
|
|
|
while (tn != NULL && NODE_PARENT(tn) != NULL) {
|
|
while (tn != NULL && NODE_PARENT(tn) != NULL) {
|
|
|
|
|
|
- if( i > 10 ) {
|
|
|
|
|
|
+ if (i > 10) {
|
|
printk("Rebalance tn=%p \n", tn);
|
|
printk("Rebalance tn=%p \n", tn);
|
|
- if(tn) printk("tn->parent=%p \n", NODE_PARENT(tn));
|
|
|
|
-
|
|
|
|
|
|
+ if (tn) printk("tn->parent=%p \n", NODE_PARENT(tn));
|
|
|
|
+
|
|
printk("Rebalance tp=%p \n", tp);
|
|
printk("Rebalance tp=%p \n", tp);
|
|
- if(tp) printk("tp->parent=%p \n", NODE_PARENT(tp));
|
|
|
|
|
|
+ if (tp) printk("tp->parent=%p \n", NODE_PARENT(tp));
|
|
}
|
|
}
|
|
|
|
|
|
- if( i > 12 ) BUG();
|
|
|
|
|
|
+ if (i > 12) BUG();
|
|
i++;
|
|
i++;
|
|
|
|
|
|
tp = NODE_PARENT(tn);
|
|
tp = NODE_PARENT(tn);
|
|
@@ -1001,14 +1002,14 @@ static struct node *trie_rebalance(struct trie *t, struct tnode *tn)
|
|
wasfull = tnode_full(tp, tnode_get_child(tp, cindex));
|
|
wasfull = tnode_full(tp, tnode_get_child(tp, cindex));
|
|
tn = (struct tnode *) resize (t, (struct tnode *)tn);
|
|
tn = (struct tnode *) resize (t, (struct tnode *)tn);
|
|
tnode_put_child_reorg((struct tnode *)tp, cindex,(struct node*)tn, wasfull);
|
|
tnode_put_child_reorg((struct tnode *)tp, cindex,(struct node*)tn, wasfull);
|
|
-
|
|
|
|
- if(!NODE_PARENT(tn))
|
|
|
|
|
|
+
|
|
|
|
+ if (!NODE_PARENT(tn))
|
|
break;
|
|
break;
|
|
|
|
|
|
tn = NODE_PARENT(tn);
|
|
tn = NODE_PARENT(tn);
|
|
}
|
|
}
|
|
/* Handle last (top) tnode */
|
|
/* Handle last (top) tnode */
|
|
- if (IS_TNODE(tn))
|
|
|
|
|
|
+ if (IS_TNODE(tn))
|
|
tn = (struct tnode*) resize(t, (struct tnode *)tn);
|
|
tn = (struct tnode*) resize(t, (struct tnode *)tn);
|
|
|
|
|
|
return (struct node*) tn;
|
|
return (struct node*) tn;
|
|
@@ -1022,42 +1023,42 @@ fib_insert_node(struct trie *t, int *err, u32 key, int plen)
|
|
struct node *n;
|
|
struct node *n;
|
|
struct leaf *l;
|
|
struct leaf *l;
|
|
int missbit;
|
|
int missbit;
|
|
- struct list_head *fa_head=NULL;
|
|
|
|
|
|
+ struct list_head *fa_head = NULL;
|
|
struct leaf_info *li;
|
|
struct leaf_info *li;
|
|
t_key cindex;
|
|
t_key cindex;
|
|
|
|
|
|
pos = 0;
|
|
pos = 0;
|
|
- n=t->trie;
|
|
|
|
|
|
+ n = t->trie;
|
|
|
|
|
|
- /* If we point to NULL, stop. Either the tree is empty and we should
|
|
|
|
- * just put a new leaf in if, or we have reached an empty child slot,
|
|
|
|
|
|
+ /* If we point to NULL, stop. Either the tree is empty and we should
|
|
|
|
+ * just put a new leaf in if, or we have reached an empty child slot,
|
|
* and we should just put our new leaf in that.
|
|
* and we should just put our new leaf in that.
|
|
- * If we point to a T_TNODE, check if it matches our key. Note that
|
|
|
|
- * a T_TNODE might be skipping any number of bits - its 'pos' need
|
|
|
|
|
|
+ * If we point to a T_TNODE, check if it matches our key. Note that
|
|
|
|
+ * a T_TNODE might be skipping any number of bits - its 'pos' need
|
|
* not be the parent's 'pos'+'bits'!
|
|
* not be the parent's 'pos'+'bits'!
|
|
*
|
|
*
|
|
- * If it does match the current key, get pos/bits from it, extract
|
|
|
|
|
|
+ * If it does match the current key, get pos/bits from it, extract
|
|
* the index from our key, push the T_TNODE and walk the tree.
|
|
* the index from our key, push the T_TNODE and walk the tree.
|
|
*
|
|
*
|
|
* If it doesn't, we have to replace it with a new T_TNODE.
|
|
* If it doesn't, we have to replace it with a new T_TNODE.
|
|
*
|
|
*
|
|
- * If we point to a T_LEAF, it might or might not have the same key
|
|
|
|
- * as we do. If it does, just change the value, update the T_LEAF's
|
|
|
|
- * value, and return it.
|
|
|
|
|
|
+ * If we point to a T_LEAF, it might or might not have the same key
|
|
|
|
+ * as we do. If it does, just change the value, update the T_LEAF's
|
|
|
|
+ * value, and return it.
|
|
* If it doesn't, we need to replace it with a T_TNODE.
|
|
* If it doesn't, we need to replace it with a T_TNODE.
|
|
*/
|
|
*/
|
|
|
|
|
|
while (n != NULL && NODE_TYPE(n) == T_TNODE) {
|
|
while (n != NULL && NODE_TYPE(n) == T_TNODE) {
|
|
tn = (struct tnode *) n;
|
|
tn = (struct tnode *) n;
|
|
-
|
|
|
|
- check_tnode(tn);
|
|
|
|
|
|
|
|
- if(tkey_sub_equals(tn->key, pos, tn->pos-pos, key)) {
|
|
|
|
|
|
+ check_tnode(tn);
|
|
|
|
+
|
|
|
|
+ if (tkey_sub_equals(tn->key, pos, tn->pos-pos, key)) {
|
|
tp = tn;
|
|
tp = tn;
|
|
pos=tn->pos + tn->bits;
|
|
pos=tn->pos + tn->bits;
|
|
n = tnode_get_child(tn, tkey_extract_bits(key, tn->pos, tn->bits));
|
|
n = tnode_get_child(tn, tkey_extract_bits(key, tn->pos, tn->bits));
|
|
|
|
|
|
- if(n && NODE_PARENT(n) != tn) {
|
|
|
|
|
|
+ if (n && NODE_PARENT(n) != tn) {
|
|
printk("BUG tn=%p, n->parent=%p\n", tn, NODE_PARENT(n));
|
|
printk("BUG tn=%p, n->parent=%p\n", tn, NODE_PARENT(n));
|
|
BUG();
|
|
BUG();
|
|
}
|
|
}
|
|
@@ -1069,21 +1070,21 @@ fib_insert_node(struct trie *t, int *err, u32 key, int plen)
|
|
/*
|
|
/*
|
|
* n ----> NULL, LEAF or TNODE
|
|
* n ----> NULL, LEAF or TNODE
|
|
*
|
|
*
|
|
- * tp is n's (parent) ----> NULL or TNODE
|
|
|
|
|
|
+ * tp is n's (parent) ----> NULL or TNODE
|
|
*/
|
|
*/
|
|
|
|
|
|
- if(tp && IS_LEAF(tp))
|
|
|
|
|
|
+ if (tp && IS_LEAF(tp))
|
|
BUG();
|
|
BUG();
|
|
|
|
|
|
|
|
|
|
/* Case 1: n is a leaf. Compare prefixes */
|
|
/* Case 1: n is a leaf. Compare prefixes */
|
|
|
|
|
|
- if (n != NULL && IS_LEAF(n) && tkey_equals(key, n->key)) {
|
|
|
|
|
|
+ if (n != NULL && IS_LEAF(n) && tkey_equals(key, n->key)) {
|
|
struct leaf *l = ( struct leaf *) n;
|
|
struct leaf *l = ( struct leaf *) n;
|
|
-
|
|
|
|
|
|
+
|
|
li = leaf_info_new(plen);
|
|
li = leaf_info_new(plen);
|
|
-
|
|
|
|
- if(! li) {
|
|
|
|
|
|
+
|
|
|
|
+ if (!li) {
|
|
*err = -ENOMEM;
|
|
*err = -ENOMEM;
|
|
goto err;
|
|
goto err;
|
|
}
|
|
}
|
|
@@ -1095,7 +1096,7 @@ fib_insert_node(struct trie *t, int *err, u32 key, int plen)
|
|
t->size++;
|
|
t->size++;
|
|
l = leaf_new();
|
|
l = leaf_new();
|
|
|
|
|
|
- if(! l) {
|
|
|
|
|
|
+ if (!l) {
|
|
*err = -ENOMEM;
|
|
*err = -ENOMEM;
|
|
goto err;
|
|
goto err;
|
|
}
|
|
}
|
|
@@ -1103,7 +1104,7 @@ fib_insert_node(struct trie *t, int *err, u32 key, int plen)
|
|
l->key = key;
|
|
l->key = key;
|
|
li = leaf_info_new(plen);
|
|
li = leaf_info_new(plen);
|
|
|
|
|
|
- if(! li) {
|
|
|
|
|
|
+ if (!li) {
|
|
tnode_free((struct tnode *) l);
|
|
tnode_free((struct tnode *) l);
|
|
*err = -ENOMEM;
|
|
*err = -ENOMEM;
|
|
goto err;
|
|
goto err;
|
|
@@ -1116,8 +1117,8 @@ fib_insert_node(struct trie *t, int *err, u32 key, int plen)
|
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if (t->trie && n == NULL) {
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if (t->trie && n == NULL) {
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NODE_SET_PARENT(l, tp);
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NODE_SET_PARENT(l, tp);
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-
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- if (!tp)
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+
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+ if (!tp)
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BUG();
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BUG();
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else {
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else {
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@@ -1127,8 +1128,8 @@ fib_insert_node(struct trie *t, int *err, u32 key, int plen)
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}
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}
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/* Case 3: n is a LEAF or a TNODE and the key doesn't match. */
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/* Case 3: n is a LEAF or a TNODE and the key doesn't match. */
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else {
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else {
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- /*
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- * Add a new tnode here
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+ /*
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+ * Add a new tnode here
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* first tnode need some special handling
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* first tnode need some special handling
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*/
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*/
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@@ -1136,39 +1137,39 @@ fib_insert_node(struct trie *t, int *err, u32 key, int plen)
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pos=tp->pos+tp->bits;
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pos=tp->pos+tp->bits;
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else
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else
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pos=0;
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pos=0;
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- if(n) {
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+ if (n) {
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newpos = tkey_mismatch(key, pos, n->key);
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newpos = tkey_mismatch(key, pos, n->key);
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tn = tnode_new(n->key, newpos, 1);
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tn = tnode_new(n->key, newpos, 1);
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}
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}
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else {
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else {
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newpos = 0;
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newpos = 0;
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- tn = tnode_new(key, newpos, 1); /* First tnode */
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+ tn = tnode_new(key, newpos, 1); /* First tnode */
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}
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}
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- if(!tn) {
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+ if (!tn) {
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free_leaf_info(li);
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free_leaf_info(li);
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tnode_free((struct tnode *) l);
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tnode_free((struct tnode *) l);
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*err = -ENOMEM;
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*err = -ENOMEM;
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goto err;
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goto err;
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- }
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-
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+ }
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+
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NODE_SET_PARENT(tn, tp);
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NODE_SET_PARENT(tn, tp);
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missbit=tkey_extract_bits(key, newpos, 1);
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missbit=tkey_extract_bits(key, newpos, 1);
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put_child(t, tn, missbit, (struct node *)l);
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put_child(t, tn, missbit, (struct node *)l);
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put_child(t, tn, 1-missbit, n);
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put_child(t, tn, 1-missbit, n);
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- if(tp) {
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+ if (tp) {
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cindex = tkey_extract_bits(key, tp->pos, tp->bits);
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cindex = tkey_extract_bits(key, tp->pos, tp->bits);
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put_child(t, (struct tnode *)tp, cindex, (struct node *)tn);
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put_child(t, (struct tnode *)tp, cindex, (struct node *)tn);
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}
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}
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- else {
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+ else {
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t->trie = (struct node*) tn; /* First tnode */
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t->trie = (struct node*) tn; /* First tnode */
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tp = tn;
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tp = tn;
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}
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}
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}
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}
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- if(tp && tp->pos+tp->bits > 32) {
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- printk("ERROR tp=%p pos=%d, bits=%d, key=%0x plen=%d\n",
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+ if (tp && tp->pos+tp->bits > 32) {
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+ printk("ERROR tp=%p pos=%d, bits=%d, key=%0x plen=%d\n",
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tp, tp->pos, tp->bits, key, plen);
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tp, tp->pos, tp->bits, key, plen);
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}
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}
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/* Rebalance the trie */
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/* Rebalance the trie */
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@@ -1185,7 +1186,7 @@ fn_trie_insert(struct fib_table *tb, struct rtmsg *r, struct kern_rta *rta,
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{
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{
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struct trie *t = (struct trie *) tb->tb_data;
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struct trie *t = (struct trie *) tb->tb_data;
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struct fib_alias *fa, *new_fa;
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struct fib_alias *fa, *new_fa;
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- struct list_head *fa_head=NULL;
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+ struct list_head *fa_head = NULL;
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struct fib_info *fi;
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struct fib_info *fi;
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int plen = r->rtm_dst_len;
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int plen = r->rtm_dst_len;
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int type = r->rtm_type;
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int type = r->rtm_type;
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@@ -1198,17 +1199,17 @@ fn_trie_insert(struct fib_table *tb, struct rtmsg *r, struct kern_rta *rta,
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return -EINVAL;
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return -EINVAL;
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key = 0;
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key = 0;
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- if (rta->rta_dst)
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+ if (rta->rta_dst)
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memcpy(&key, rta->rta_dst, 4);
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memcpy(&key, rta->rta_dst, 4);
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key = ntohl(key);
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key = ntohl(key);
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- if(trie_debug)
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+ if (trie_debug)
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printk("Insert table=%d %08x/%d\n", tb->tb_id, key, plen);
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printk("Insert table=%d %08x/%d\n", tb->tb_id, key, plen);
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- mask = ntohl( inet_make_mask(plen) );
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+ mask = ntohl( inet_make_mask(plen) );
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- if(key & ~mask)
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+ if (key & ~mask)
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return -EINVAL;
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return -EINVAL;
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key = key & mask;
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key = key & mask;
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@@ -1217,9 +1218,9 @@ fn_trie_insert(struct fib_table *tb, struct rtmsg *r, struct kern_rta *rta,
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goto err;
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goto err;
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l = fib_find_node(t, key);
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l = fib_find_node(t, key);
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- fa = NULL;
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+ fa = NULL;
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- if(l) {
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+ if (l) {
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fa_head = get_fa_head(l, plen);
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fa_head = get_fa_head(l, plen);
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fa = fib_find_alias(fa_head, tos, fi->fib_priority);
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fa = fib_find_alias(fa_head, tos, fi->fib_priority);
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}
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}
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@@ -1298,16 +1299,16 @@ fn_trie_insert(struct fib_table *tb, struct rtmsg *r, struct kern_rta *rta,
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new_fa->fa_scope = r->rtm_scope;
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new_fa->fa_scope = r->rtm_scope;
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new_fa->fa_state = 0;
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new_fa->fa_state = 0;
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#if 0
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#if 0
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- new_fa->dst = NULL;
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+ new_fa->dst = NULL;
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#endif
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#endif
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/*
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/*
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* Insert new entry to the list.
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* Insert new entry to the list.
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*/
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*/
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- if(!fa_head) {
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+ if (!fa_head) {
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fa_head = fib_insert_node(t, &err, key, plen);
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fa_head = fib_insert_node(t, &err, key, plen);
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err = 0;
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err = 0;
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- if(err)
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+ if (err)
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goto out_free_new_fa;
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goto out_free_new_fa;
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}
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}
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@@ -1327,11 +1328,11 @@ out_free_new_fa:
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kmem_cache_free(fn_alias_kmem, new_fa);
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kmem_cache_free(fn_alias_kmem, new_fa);
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out:
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out:
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fib_release_info(fi);
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fib_release_info(fi);
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-err:;
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+err:;
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return err;
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return err;
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}
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}
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-static inline int check_leaf(struct trie *t, struct leaf *l, t_key key, int *plen, const struct flowi *flp,
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+static inline int check_leaf(struct trie *t, struct leaf *l, t_key key, int *plen, const struct flowi *flp,
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struct fib_result *res, int *err)
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struct fib_result *res, int *err)
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{
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{
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int i;
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int i;
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@@ -1339,12 +1340,12 @@ static inline int check_leaf(struct trie *t, struct leaf *l, t_key key, int *pl
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struct leaf_info *li;
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struct leaf_info *li;
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struct hlist_head *hhead = &l->list;
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struct hlist_head *hhead = &l->list;
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struct hlist_node *node;
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struct hlist_node *node;
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-
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+
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hlist_for_each_entry(li, node, hhead, hlist) {
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hlist_for_each_entry(li, node, hhead, hlist) {
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i = li->plen;
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i = li->plen;
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mask = ntohl(inet_make_mask(i));
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mask = ntohl(inet_make_mask(i));
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- if (l->key != (key & mask))
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+ if (l->key != (key & mask))
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continue;
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continue;
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if (((*err) = fib_semantic_match(&li->falh, flp, res, l->key, mask, i)) == 0) {
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if (((*err) = fib_semantic_match(&li->falh, flp, res, l->key, mask, i)) == 0) {
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@@ -1376,7 +1377,7 @@ fn_trie_lookup(struct fib_table *tb, const struct flowi *flp, struct fib_result
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n = t->trie;
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n = t->trie;
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read_lock(&fib_lock);
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read_lock(&fib_lock);
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- if(!n)
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+ if (!n)
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goto failed;
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goto failed;
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#ifdef CONFIG_IP_FIB_TRIE_STATS
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#ifdef CONFIG_IP_FIB_TRIE_STATS
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@@ -1385,19 +1386,19 @@ fn_trie_lookup(struct fib_table *tb, const struct flowi *flp, struct fib_result
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/* Just a leaf? */
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/* Just a leaf? */
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if (IS_LEAF(n)) {
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if (IS_LEAF(n)) {
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- if( check_leaf(t, (struct leaf *)n, key, &plen, flp, res, &ret) )
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+ if (check_leaf(t, (struct leaf *)n, key, &plen, flp, res, &ret))
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goto found;
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goto found;
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goto failed;
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goto failed;
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}
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}
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pn = (struct tnode *) n;
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pn = (struct tnode *) n;
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chopped_off = 0;
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chopped_off = 0;
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-
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+
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while (pn) {
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while (pn) {
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pos = pn->pos;
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pos = pn->pos;
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bits = pn->bits;
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bits = pn->bits;
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- if(!chopped_off)
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+ if (!chopped_off)
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cindex = tkey_extract_bits(MASK_PFX(key, current_prefix_length), pos, bits);
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cindex = tkey_extract_bits(MASK_PFX(key, current_prefix_length), pos, bits);
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n = tnode_get_child(pn, cindex);
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n = tnode_get_child(pn, cindex);
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@@ -1417,33 +1418,33 @@ fn_trie_lookup(struct fib_table *tb, const struct flowi *flp, struct fib_result
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int mp;
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int mp;
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/*
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/*
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- * It's a tnode, and we can do some extra checks here if we
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+ * It's a tnode, and we can do some extra checks here if we
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* like, to avoid descending into a dead-end branch.
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* like, to avoid descending into a dead-end branch.
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- * This tnode is in the parent's child array at index
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- * key[p_pos..p_pos+p_bits] but potentially with some bits
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- * chopped off, so in reality the index may be just a
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+ * This tnode is in the parent's child array at index
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+ * key[p_pos..p_pos+p_bits] but potentially with some bits
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+ * chopped off, so in reality the index may be just a
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* subprefix, padded with zero at the end.
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* subprefix, padded with zero at the end.
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- * We can also take a look at any skipped bits in this
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- * tnode - everything up to p_pos is supposed to be ok,
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+ * We can also take a look at any skipped bits in this
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+ * tnode - everything up to p_pos is supposed to be ok,
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* and the non-chopped bits of the index (se previous
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* and the non-chopped bits of the index (se previous
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- * paragraph) are also guaranteed ok, but the rest is
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+ * paragraph) are also guaranteed ok, but the rest is
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* considered unknown.
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* considered unknown.
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*
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*
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* The skipped bits are key[pos+bits..cn->pos].
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* The skipped bits are key[pos+bits..cn->pos].
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*/
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*/
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-
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- /* If current_prefix_length < pos+bits, we are already doing
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- * actual prefix matching, which means everything from
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- * pos+(bits-chopped_off) onward must be zero along some
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- * branch of this subtree - otherwise there is *no* valid
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+
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+ /* If current_prefix_length < pos+bits, we are already doing
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+ * actual prefix matching, which means everything from
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+ * pos+(bits-chopped_off) onward must be zero along some
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+ * branch of this subtree - otherwise there is *no* valid
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* prefix present. Here we can only check the skipped
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* prefix present. Here we can only check the skipped
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- * bits. Remember, since we have already indexed into the
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- * parent's child array, we know that the bits we chopped of
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+ * bits. Remember, since we have already indexed into the
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+ * parent's child array, we know that the bits we chopped of
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* *are* zero.
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* *are* zero.
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*/
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*/
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/* NOTA BENE: CHECKING ONLY SKIPPED BITS FOR THE NEW NODE HERE */
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/* NOTA BENE: CHECKING ONLY SKIPPED BITS FOR THE NEW NODE HERE */
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-
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+
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if (current_prefix_length < pos+bits) {
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if (current_prefix_length < pos+bits) {
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if (tkey_extract_bits(cn->key, current_prefix_length,
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if (tkey_extract_bits(cn->key, current_prefix_length,
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cn->pos - current_prefix_length) != 0 ||
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cn->pos - current_prefix_length) != 0 ||
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@@ -1452,13 +1453,13 @@ fn_trie_lookup(struct fib_table *tb, const struct flowi *flp, struct fib_result
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}
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}
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/*
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/*
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- * If chopped_off=0, the index is fully validated and we
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- * only need to look at the skipped bits for this, the new,
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+ * If chopped_off=0, the index is fully validated and we
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+ * only need to look at the skipped bits for this, the new,
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* tnode. What we actually want to do is to find out if
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* tnode. What we actually want to do is to find out if
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* these skipped bits match our key perfectly, or if we will
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* these skipped bits match our key perfectly, or if we will
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- * have to count on finding a matching prefix further down,
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- * because if we do, we would like to have some way of
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- * verifying the existence of such a prefix at this point.
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+ * have to count on finding a matching prefix further down,
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+ * because if we do, we would like to have some way of
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+ * verifying the existence of such a prefix at this point.
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*/
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*/
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/* The only thing we can do at this point is to verify that
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/* The only thing we can do at this point is to verify that
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@@ -1470,22 +1471,22 @@ fn_trie_lookup(struct fib_table *tb, const struct flowi *flp, struct fib_result
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* new tnode's key.
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* new tnode's key.
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*/
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*/
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- /* Note: We aren't very concerned about the piece of the key
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- * that precede pn->pos+pn->bits, since these have already been
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- * checked. The bits after cn->pos aren't checked since these are
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- * by definition "unknown" at this point. Thus, what we want to
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- * see is if we are about to enter the "prefix matching" state,
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- * and in that case verify that the skipped bits that will prevail
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- * throughout this subtree are zero, as they have to be if we are
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+ /* Note: We aren't very concerned about the piece of the key
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+ * that precede pn->pos+pn->bits, since these have already been
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+ * checked. The bits after cn->pos aren't checked since these are
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+ * by definition "unknown" at this point. Thus, what we want to
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+ * see is if we are about to enter the "prefix matching" state,
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+ * and in that case verify that the skipped bits that will prevail
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+ * throughout this subtree are zero, as they have to be if we are
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* to find a matching prefix.
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* to find a matching prefix.
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*/
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*/
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node_prefix = MASK_PFX(cn->key, cn->pos);
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node_prefix = MASK_PFX(cn->key, cn->pos);
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- key_prefix = MASK_PFX(key, cn->pos);
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+ key_prefix = MASK_PFX(key, cn->pos);
|
|
pref_mismatch = key_prefix^node_prefix;
|
|
pref_mismatch = key_prefix^node_prefix;
|
|
mp = 0;
|
|
mp = 0;
|
|
|
|
|
|
- /* In short: If skipped bits in this node do not match the search
|
|
|
|
|
|
+ /* In short: If skipped bits in this node do not match the search
|
|
* key, enter the "prefix matching" state.directly.
|
|
* key, enter the "prefix matching" state.directly.
|
|
*/
|
|
*/
|
|
if (pref_mismatch) {
|
|
if (pref_mismatch) {
|
|
@@ -1494,7 +1495,7 @@ fn_trie_lookup(struct fib_table *tb, const struct flowi *flp, struct fib_result
|
|
pref_mismatch = pref_mismatch <<1;
|
|
pref_mismatch = pref_mismatch <<1;
|
|
}
|
|
}
|
|
key_prefix = tkey_extract_bits(cn->key, mp, cn->pos-mp);
|
|
key_prefix = tkey_extract_bits(cn->key, mp, cn->pos-mp);
|
|
-
|
|
|
|
|
|
+
|
|
if (key_prefix != 0)
|
|
if (key_prefix != 0)
|
|
goto backtrace;
|
|
goto backtrace;
|
|
|
|
|
|
@@ -1505,9 +1506,9 @@ fn_trie_lookup(struct fib_table *tb, const struct flowi *flp, struct fib_result
|
|
pn = (struct tnode *)n; /* Descend */
|
|
pn = (struct tnode *)n; /* Descend */
|
|
chopped_off = 0;
|
|
chopped_off = 0;
|
|
continue;
|
|
continue;
|
|
- }
|
|
|
|
- if (IS_LEAF(n)) {
|
|
|
|
- if( check_leaf(t, (struct leaf *)n, key, &plen, flp, res, &ret))
|
|
|
|
|
|
+ }
|
|
|
|
+ if (IS_LEAF(n)) {
|
|
|
|
+ if (check_leaf(t, (struct leaf *)n, key, &plen, flp, res, &ret))
|
|
goto found;
|
|
goto found;
|
|
}
|
|
}
|
|
backtrace:
|
|
backtrace:
|
|
@@ -1521,18 +1522,18 @@ backtrace:
|
|
/* Decrease current_... with bits chopped off */
|
|
/* Decrease current_... with bits chopped off */
|
|
if (current_prefix_length > pn->pos + pn->bits - chopped_off)
|
|
if (current_prefix_length > pn->pos + pn->bits - chopped_off)
|
|
current_prefix_length = pn->pos + pn->bits - chopped_off;
|
|
current_prefix_length = pn->pos + pn->bits - chopped_off;
|
|
-
|
|
|
|
|
|
+
|
|
/*
|
|
/*
|
|
- * Either we do the actual chop off according or if we have
|
|
|
|
|
|
+ * Either we do the actual chop off according or if we have
|
|
* chopped off all bits in this tnode walk up to our parent.
|
|
* chopped off all bits in this tnode walk up to our parent.
|
|
*/
|
|
*/
|
|
|
|
|
|
- if(chopped_off <= pn->bits)
|
|
|
|
|
|
+ if (chopped_off <= pn->bits)
|
|
cindex &= ~(1 << (chopped_off-1));
|
|
cindex &= ~(1 << (chopped_off-1));
|
|
else {
|
|
else {
|
|
- if( NODE_PARENT(pn) == NULL)
|
|
|
|
|
|
+ if (NODE_PARENT(pn) == NULL)
|
|
goto failed;
|
|
goto failed;
|
|
-
|
|
|
|
|
|
+
|
|
/* Get Child's index */
|
|
/* Get Child's index */
|
|
cindex = tkey_extract_bits(pn->key, NODE_PARENT(pn)->pos, NODE_PARENT(pn)->bits);
|
|
cindex = tkey_extract_bits(pn->key, NODE_PARENT(pn)->pos, NODE_PARENT(pn)->bits);
|
|
pn = NODE_PARENT(pn);
|
|
pn = NODE_PARENT(pn);
|
|
@@ -1542,10 +1543,10 @@ backtrace:
|
|
t->stats.backtrack++;
|
|
t->stats.backtrack++;
|
|
#endif
|
|
#endif
|
|
goto backtrace;
|
|
goto backtrace;
|
|
- }
|
|
|
|
|
|
+ }
|
|
}
|
|
}
|
|
failed:
|
|
failed:
|
|
- ret = 1;
|
|
|
|
|
|
+ ret = 1;
|
|
found:
|
|
found:
|
|
read_unlock(&fib_lock);
|
|
read_unlock(&fib_lock);
|
|
return ret;
|
|
return ret;
|
|
@@ -1558,11 +1559,11 @@ static int trie_leaf_remove(struct trie *t, t_key key)
|
|
struct node *n = t->trie;
|
|
struct node *n = t->trie;
|
|
struct leaf *l;
|
|
struct leaf *l;
|
|
|
|
|
|
- if(trie_debug)
|
|
|
|
|
|
+ if (trie_debug)
|
|
printk("entering trie_leaf_remove(%p)\n", n);
|
|
printk("entering trie_leaf_remove(%p)\n", n);
|
|
|
|
|
|
/* Note that in the case skipped bits, those bits are *not* checked!
|
|
/* Note that in the case skipped bits, those bits are *not* checked!
|
|
- * When we finish this, we will have NULL or a T_LEAF, and the
|
|
|
|
|
|
+ * When we finish this, we will have NULL or a T_LEAF, and the
|
|
* T_LEAF may or may not match our key.
|
|
* T_LEAF may or may not match our key.
|
|
*/
|
|
*/
|
|
|
|
|
|
@@ -1571,19 +1572,19 @@ static int trie_leaf_remove(struct trie *t, t_key key)
|
|
check_tnode(tn);
|
|
check_tnode(tn);
|
|
n = tnode_get_child(tn ,tkey_extract_bits(key, tn->pos, tn->bits));
|
|
n = tnode_get_child(tn ,tkey_extract_bits(key, tn->pos, tn->bits));
|
|
|
|
|
|
- if(n && NODE_PARENT(n) != tn) {
|
|
|
|
|
|
+ if (n && NODE_PARENT(n) != tn) {
|
|
printk("BUG tn=%p, n->parent=%p\n", tn, NODE_PARENT(n));
|
|
printk("BUG tn=%p, n->parent=%p\n", tn, NODE_PARENT(n));
|
|
BUG();
|
|
BUG();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
l = (struct leaf *) n;
|
|
l = (struct leaf *) n;
|
|
|
|
|
|
- if(!n || !tkey_equals(l->key, key))
|
|
|
|
|
|
+ if (!n || !tkey_equals(l->key, key))
|
|
return 0;
|
|
return 0;
|
|
-
|
|
|
|
- /*
|
|
|
|
- * Key found.
|
|
|
|
- * Remove the leaf and rebalance the tree
|
|
|
|
|
|
+
|
|
|
|
+ /*
|
|
|
|
+ * Key found.
|
|
|
|
+ * Remove the leaf and rebalance the tree
|
|
*/
|
|
*/
|
|
|
|
|
|
t->revision++;
|
|
t->revision++;
|
|
@@ -1592,7 +1593,7 @@ static int trie_leaf_remove(struct trie *t, t_key key)
|
|
tp = NODE_PARENT(n);
|
|
tp = NODE_PARENT(n);
|
|
tnode_free((struct tnode *) n);
|
|
tnode_free((struct tnode *) n);
|
|
|
|
|
|
- if(tp) {
|
|
|
|
|
|
+ if (tp) {
|
|
cindex = tkey_extract_bits(key, tp->pos, tp->bits);
|
|
cindex = tkey_extract_bits(key, tp->pos, tp->bits);
|
|
put_child(t, (struct tnode *)tp, cindex, NULL);
|
|
put_child(t, (struct tnode *)tp, cindex, NULL);
|
|
t->trie = trie_rebalance(t, tp);
|
|
t->trie = trie_rebalance(t, tp);
|
|
@@ -1615,23 +1616,23 @@ fn_trie_delete(struct fib_table *tb, struct rtmsg *r, struct kern_rta *rta,
|
|
struct list_head *fa_head;
|
|
struct list_head *fa_head;
|
|
struct leaf *l;
|
|
struct leaf *l;
|
|
|
|
|
|
- if (plen > 32)
|
|
|
|
|
|
+ if (plen > 32)
|
|
return -EINVAL;
|
|
return -EINVAL;
|
|
|
|
|
|
key = 0;
|
|
key = 0;
|
|
- if (rta->rta_dst)
|
|
|
|
|
|
+ if (rta->rta_dst)
|
|
memcpy(&key, rta->rta_dst, 4);
|
|
memcpy(&key, rta->rta_dst, 4);
|
|
|
|
|
|
key = ntohl(key);
|
|
key = ntohl(key);
|
|
- mask = ntohl( inet_make_mask(plen) );
|
|
|
|
|
|
+ mask = ntohl( inet_make_mask(plen) );
|
|
|
|
|
|
- if(key & ~mask)
|
|
|
|
|
|
+ if (key & ~mask)
|
|
return -EINVAL;
|
|
return -EINVAL;
|
|
|
|
|
|
key = key & mask;
|
|
key = key & mask;
|
|
l = fib_find_node(t, key);
|
|
l = fib_find_node(t, key);
|
|
|
|
|
|
- if(!l)
|
|
|
|
|
|
+ if (!l)
|
|
return -ESRCH;
|
|
return -ESRCH;
|
|
|
|
|
|
fa_head = get_fa_head(l, plen);
|
|
fa_head = get_fa_head(l, plen);
|
|
@@ -1677,16 +1678,16 @@ fn_trie_delete(struct fib_table *tb, struct rtmsg *r, struct kern_rta *rta,
|
|
|
|
|
|
list_del(&fa->fa_list);
|
|
list_del(&fa->fa_list);
|
|
|
|
|
|
- if(list_empty(fa_head)) {
|
|
|
|
|
|
+ if (list_empty(fa_head)) {
|
|
hlist_del(&li->hlist);
|
|
hlist_del(&li->hlist);
|
|
kill_li = 1;
|
|
kill_li = 1;
|
|
}
|
|
}
|
|
write_unlock_bh(&fib_lock);
|
|
write_unlock_bh(&fib_lock);
|
|
-
|
|
|
|
- if(kill_li)
|
|
|
|
|
|
+
|
|
|
|
+ if (kill_li)
|
|
free_leaf_info(li);
|
|
free_leaf_info(li);
|
|
|
|
|
|
- if(hlist_empty(&l->list))
|
|
|
|
|
|
+ if (hlist_empty(&l->list))
|
|
trie_leaf_remove(t, key);
|
|
trie_leaf_remove(t, key);
|
|
|
|
|
|
if (fa->fa_state & FA_S_ACCESSED)
|
|
if (fa->fa_state & FA_S_ACCESSED)
|
|
@@ -1705,12 +1706,12 @@ static int trie_flush_list(struct trie *t, struct list_head *head)
|
|
|
|
|
|
list_for_each_entry_safe(fa, fa_node, head, fa_list) {
|
|
list_for_each_entry_safe(fa, fa_node, head, fa_list) {
|
|
struct fib_info *fi = fa->fa_info;
|
|
struct fib_info *fi = fa->fa_info;
|
|
-
|
|
|
|
|
|
+
|
|
if (fi && (fi->fib_flags&RTNH_F_DEAD)) {
|
|
if (fi && (fi->fib_flags&RTNH_F_DEAD)) {
|
|
|
|
|
|
- write_lock_bh(&fib_lock);
|
|
|
|
|
|
+ write_lock_bh(&fib_lock);
|
|
list_del(&fa->fa_list);
|
|
list_del(&fa->fa_list);
|
|
- write_unlock_bh(&fib_lock);
|
|
|
|
|
|
+ write_unlock_bh(&fib_lock);
|
|
|
|
|
|
fn_free_alias(fa);
|
|
fn_free_alias(fa);
|
|
found++;
|
|
found++;
|
|
@@ -1727,14 +1728,14 @@ static int trie_flush_leaf(struct trie *t, struct leaf *l)
|
|
struct leaf_info *li = NULL;
|
|
struct leaf_info *li = NULL;
|
|
|
|
|
|
hlist_for_each_entry_safe(li, node, tmp, lih, hlist) {
|
|
hlist_for_each_entry_safe(li, node, tmp, lih, hlist) {
|
|
-
|
|
|
|
|
|
+
|
|
found += trie_flush_list(t, &li->falh);
|
|
found += trie_flush_list(t, &li->falh);
|
|
|
|
|
|
if (list_empty(&li->falh)) {
|
|
if (list_empty(&li->falh)) {
|
|
|
|
|
|
- write_lock_bh(&fib_lock);
|
|
|
|
|
|
+ write_lock_bh(&fib_lock);
|
|
hlist_del(&li->hlist);
|
|
hlist_del(&li->hlist);
|
|
- write_unlock_bh(&fib_lock);
|
|
|
|
|
|
+ write_unlock_bh(&fib_lock);
|
|
|
|
|
|
free_leaf_info(li);
|
|
free_leaf_info(li);
|
|
}
|
|
}
|
|
@@ -1748,8 +1749,8 @@ static struct leaf *nextleaf(struct trie *t, struct leaf *thisleaf)
|
|
struct tnode *p;
|
|
struct tnode *p;
|
|
int idx;
|
|
int idx;
|
|
|
|
|
|
- if(c == NULL) {
|
|
|
|
- if(t->trie == NULL)
|
|
|
|
|
|
+ if (c == NULL) {
|
|
|
|
+ if (t->trie == NULL)
|
|
return NULL;
|
|
return NULL;
|
|
|
|
|
|
if (IS_LEAF(t->trie)) /* trie w. just a leaf */
|
|
if (IS_LEAF(t->trie)) /* trie w. just a leaf */
|
|
@@ -1757,33 +1758,34 @@ static struct leaf *nextleaf(struct trie *t, struct leaf *thisleaf)
|
|
|
|
|
|
p = (struct tnode*) t->trie; /* Start */
|
|
p = (struct tnode*) t->trie; /* Start */
|
|
}
|
|
}
|
|
- else
|
|
|
|
|
|
+ else
|
|
p = (struct tnode *) NODE_PARENT(c);
|
|
p = (struct tnode *) NODE_PARENT(c);
|
|
|
|
+
|
|
while (p) {
|
|
while (p) {
|
|
int pos, last;
|
|
int pos, last;
|
|
|
|
|
|
/* Find the next child of the parent */
|
|
/* Find the next child of the parent */
|
|
- if(c)
|
|
|
|
- pos = 1 + tkey_extract_bits(c->key, p->pos, p->bits);
|
|
|
|
- else
|
|
|
|
|
|
+ if (c)
|
|
|
|
+ pos = 1 + tkey_extract_bits(c->key, p->pos, p->bits);
|
|
|
|
+ else
|
|
pos = 0;
|
|
pos = 0;
|
|
|
|
|
|
last = 1 << p->bits;
|
|
last = 1 << p->bits;
|
|
for(idx = pos; idx < last ; idx++) {
|
|
for(idx = pos; idx < last ; idx++) {
|
|
- if( p->child[idx]) {
|
|
|
|
|
|
+ if (p->child[idx]) {
|
|
|
|
|
|
/* Decend if tnode */
|
|
/* Decend if tnode */
|
|
|
|
|
|
while (IS_TNODE(p->child[idx])) {
|
|
while (IS_TNODE(p->child[idx])) {
|
|
p = (struct tnode*) p->child[idx];
|
|
p = (struct tnode*) p->child[idx];
|
|
idx = 0;
|
|
idx = 0;
|
|
-
|
|
|
|
|
|
+
|
|
/* Rightmost non-NULL branch */
|
|
/* Rightmost non-NULL branch */
|
|
- if( p && IS_TNODE(p) )
|
|
|
|
- while ( p->child[idx] == NULL && idx < (1 << p->bits) ) idx++;
|
|
|
|
|
|
+ if (p && IS_TNODE(p))
|
|
|
|
+ while (p->child[idx] == NULL && idx < (1 << p->bits)) idx++;
|
|
|
|
|
|
/* Done with this tnode? */
|
|
/* Done with this tnode? */
|
|
- if( idx >= (1 << p->bits) || p->child[idx] == NULL )
|
|
|
|
|
|
+ if (idx >= (1 << p->bits) || p->child[idx] == NULL )
|
|
goto up;
|
|
goto up;
|
|
}
|
|
}
|
|
return (struct leaf*) p->child[idx];
|
|
return (struct leaf*) p->child[idx];
|
|
@@ -1816,7 +1818,7 @@ static int fn_trie_flush(struct fib_table *tb)
|
|
if (ll && hlist_empty(&ll->list))
|
|
if (ll && hlist_empty(&ll->list))
|
|
trie_leaf_remove(t, ll->key);
|
|
trie_leaf_remove(t, ll->key);
|
|
|
|
|
|
- if(trie_debug)
|
|
|
|
|
|
+ if (trie_debug)
|
|
printk("trie_flush found=%d\n", found);
|
|
printk("trie_flush found=%d\n", found);
|
|
return found;
|
|
return found;
|
|
}
|
|
}
|
|
@@ -1839,32 +1841,32 @@ fn_trie_select_default(struct fib_table *tb, const struct flowi *flp, struct fib
|
|
order = -1;
|
|
order = -1;
|
|
|
|
|
|
read_lock(&fib_lock);
|
|
read_lock(&fib_lock);
|
|
-
|
|
|
|
|
|
+
|
|
l = fib_find_node(t, 0);
|
|
l = fib_find_node(t, 0);
|
|
- if(!l)
|
|
|
|
|
|
+ if (!l)
|
|
goto out;
|
|
goto out;
|
|
|
|
|
|
fa_head = get_fa_head(l, 0);
|
|
fa_head = get_fa_head(l, 0);
|
|
- if(!fa_head)
|
|
|
|
|
|
+ if (!fa_head)
|
|
goto out;
|
|
goto out;
|
|
|
|
|
|
- if (list_empty(fa_head))
|
|
|
|
|
|
+ if (list_empty(fa_head))
|
|
goto out;
|
|
goto out;
|
|
|
|
|
|
list_for_each_entry(fa, fa_head, fa_list) {
|
|
list_for_each_entry(fa, fa_head, fa_list) {
|
|
struct fib_info *next_fi = fa->fa_info;
|
|
struct fib_info *next_fi = fa->fa_info;
|
|
-
|
|
|
|
|
|
+
|
|
if (fa->fa_scope != res->scope ||
|
|
if (fa->fa_scope != res->scope ||
|
|
fa->fa_type != RTN_UNICAST)
|
|
fa->fa_type != RTN_UNICAST)
|
|
continue;
|
|
continue;
|
|
-
|
|
|
|
|
|
+
|
|
if (next_fi->fib_priority > res->fi->fib_priority)
|
|
if (next_fi->fib_priority > res->fi->fib_priority)
|
|
break;
|
|
break;
|
|
if (!next_fi->fib_nh[0].nh_gw ||
|
|
if (!next_fi->fib_nh[0].nh_gw ||
|
|
next_fi->fib_nh[0].nh_scope != RT_SCOPE_LINK)
|
|
next_fi->fib_nh[0].nh_scope != RT_SCOPE_LINK)
|
|
continue;
|
|
continue;
|
|
fa->fa_state |= FA_S_ACCESSED;
|
|
fa->fa_state |= FA_S_ACCESSED;
|
|
-
|
|
|
|
|
|
+
|
|
if (fi == NULL) {
|
|
if (fi == NULL) {
|
|
if (next_fi != res->fi)
|
|
if (next_fi != res->fi)
|
|
break;
|
|
break;
|
|
@@ -1902,10 +1904,10 @@ fn_trie_select_default(struct fib_table *tb, const struct flowi *flp, struct fib
|
|
}
|
|
}
|
|
trie_last_dflt = last_idx;
|
|
trie_last_dflt = last_idx;
|
|
out:;
|
|
out:;
|
|
- read_unlock(&fib_lock);
|
|
|
|
|
|
+ read_unlock(&fib_lock);
|
|
}
|
|
}
|
|
|
|
|
|
-static int fn_trie_dump_fa(t_key key, int plen, struct list_head *fah, struct fib_table *tb,
|
|
|
|
|
|
+static int fn_trie_dump_fa(t_key key, int plen, struct list_head *fah, struct fib_table *tb,
|
|
struct sk_buff *skb, struct netlink_callback *cb)
|
|
struct sk_buff *skb, struct netlink_callback *cb)
|
|
{
|
|
{
|
|
int i, s_i;
|
|
int i, s_i;
|
|
@@ -1951,7 +1953,7 @@ static int fn_trie_dump_fa(t_key key, int plen, struct list_head *fah, struct fi
|
|
return skb->len;
|
|
return skb->len;
|
|
}
|
|
}
|
|
|
|
|
|
-static int fn_trie_dump_plen(struct trie *t, int plen, struct fib_table *tb, struct sk_buff *skb,
|
|
|
|
|
|
+static int fn_trie_dump_plen(struct trie *t, int plen, struct fib_table *tb, struct sk_buff *skb,
|
|
struct netlink_callback *cb)
|
|
struct netlink_callback *cb)
|
|
{
|
|
{
|
|
int h, s_h;
|
|
int h, s_h;
|
|
@@ -1968,11 +1970,11 @@ static int fn_trie_dump_plen(struct trie *t, int plen, struct fib_table *tb, str
|
|
sizeof(cb->args) - 3*sizeof(cb->args[0]));
|
|
sizeof(cb->args) - 3*sizeof(cb->args[0]));
|
|
|
|
|
|
fa_head = get_fa_head(l, plen);
|
|
fa_head = get_fa_head(l, plen);
|
|
-
|
|
|
|
- if(!fa_head)
|
|
|
|
|
|
+
|
|
|
|
+ if (!fa_head)
|
|
continue;
|
|
continue;
|
|
|
|
|
|
- if(list_empty(fa_head))
|
|
|
|
|
|
+ if (list_empty(fa_head))
|
|
continue;
|
|
continue;
|
|
|
|
|
|
if (fn_trie_dump_fa(l->key, plen, fa_head, tb, skb, cb)<0) {
|
|
if (fn_trie_dump_fa(l->key, plen, fa_head, tb, skb, cb)<0) {
|
|
@@ -2048,10 +2050,10 @@ struct fib_table * __init fib_hash_init(int id)
|
|
|
|
|
|
trie_init(t);
|
|
trie_init(t);
|
|
|
|
|
|
- if (id == RT_TABLE_LOCAL)
|
|
|
|
- trie_local=t;
|
|
|
|
- else if (id == RT_TABLE_MAIN)
|
|
|
|
- trie_main=t;
|
|
|
|
|
|
+ if (id == RT_TABLE_LOCAL)
|
|
|
|
+ trie_local = t;
|
|
|
|
+ else if (id == RT_TABLE_MAIN)
|
|
|
|
+ trie_main = t;
|
|
|
|
|
|
if (id == RT_TABLE_LOCAL)
|
|
if (id == RT_TABLE_LOCAL)
|
|
printk("IPv4 FIB: Using LC-trie version %s\n", VERSION);
|
|
printk("IPv4 FIB: Using LC-trie version %s\n", VERSION);
|
|
@@ -2072,7 +2074,7 @@ static void printbin_seq(struct seq_file *seq, unsigned int v, int bits)
|
|
seq_printf(seq, "%s", (v & (1<<bits))?"1":"0");
|
|
seq_printf(seq, "%s", (v & (1<<bits))?"1":"0");
|
|
}
|
|
}
|
|
|
|
|
|
-static void printnode_seq(struct seq_file *seq, int indent, struct node *n,
|
|
|
|
|
|
+static void printnode_seq(struct seq_file *seq, int indent, struct node *n,
|
|
int pend, int cindex, int bits)
|
|
int pend, int cindex, int bits)
|
|
{
|
|
{
|
|
putspace_seq(seq, indent);
|
|
putspace_seq(seq, indent);
|
|
@@ -2090,12 +2092,12 @@ static void printnode_seq(struct seq_file *seq, int indent, struct node *n,
|
|
seq_printf(seq, "%s:%p ", IS_LEAF(n)?"Leaf":"Internal node", n);
|
|
seq_printf(seq, "%s:%p ", IS_LEAF(n)?"Leaf":"Internal node", n);
|
|
|
|
|
|
if (IS_LEAF(n))
|
|
if (IS_LEAF(n))
|
|
- seq_printf(seq, "key=%d.%d.%d.%d\n",
|
|
|
|
|
|
+ seq_printf(seq, "key=%d.%d.%d.%d\n",
|
|
n->key >> 24, (n->key >> 16) % 256, (n->key >> 8) % 256, n->key % 256);
|
|
n->key >> 24, (n->key >> 16) % 256, (n->key >> 8) % 256, n->key % 256);
|
|
else {
|
|
else {
|
|
- int plen=((struct tnode *)n)->pos;
|
|
|
|
|
|
+ int plen = ((struct tnode *)n)->pos;
|
|
t_key prf=MASK_PFX(n->key, plen);
|
|
t_key prf=MASK_PFX(n->key, plen);
|
|
- seq_printf(seq, "key=%d.%d.%d.%d/%d\n",
|
|
|
|
|
|
+ seq_printf(seq, "key=%d.%d.%d.%d/%d\n",
|
|
prf >> 24, (prf >> 16) % 256, (prf >> 8) % 256, prf % 256, plen);
|
|
prf >> 24, (prf >> 16) % 256, (prf >> 8) % 256, prf % 256, plen);
|
|
}
|
|
}
|
|
if (IS_LEAF(n)) {
|
|
if (IS_LEAF(n)) {
|
|
@@ -2103,14 +2105,14 @@ static void printnode_seq(struct seq_file *seq, int indent, struct node *n,
|
|
struct fib_alias *fa;
|
|
struct fib_alias *fa;
|
|
int i;
|
|
int i;
|
|
for (i=32; i>=0; i--)
|
|
for (i=32; i>=0; i--)
|
|
- if(find_leaf_info(&l->list, i)) {
|
|
|
|
-
|
|
|
|
|
|
+ if (find_leaf_info(&l->list, i)) {
|
|
|
|
+
|
|
struct list_head *fa_head = get_fa_head(l, i);
|
|
struct list_head *fa_head = get_fa_head(l, i);
|
|
-
|
|
|
|
- if(!fa_head)
|
|
|
|
|
|
+
|
|
|
|
+ if (!fa_head)
|
|
continue;
|
|
continue;
|
|
|
|
|
|
- if(list_empty(fa_head))
|
|
|
|
|
|
+ if (list_empty(fa_head))
|
|
continue;
|
|
continue;
|
|
|
|
|
|
putspace_seq(seq, indent+2);
|
|
putspace_seq(seq, indent+2);
|
|
@@ -2136,7 +2138,7 @@ static void printnode_seq(struct seq_file *seq, int indent, struct node *n,
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if (IS_TNODE(n)) {
|
|
else if (IS_TNODE(n)) {
|
|
- struct tnode *tn=(struct tnode *)n;
|
|
|
|
|
|
+ struct tnode *tn = (struct tnode *)n;
|
|
putspace_seq(seq, indent); seq_printf(seq, "| ");
|
|
putspace_seq(seq, indent); seq_printf(seq, "| ");
|
|
seq_printf(seq, "{key prefix=%08x/", tn->key&TKEY_GET_MASK(0, tn->pos));
|
|
seq_printf(seq, "{key prefix=%08x/", tn->key&TKEY_GET_MASK(0, tn->pos));
|
|
printbin_seq(seq, tkey_extract_bits(tn->key, 0, tn->pos), tn->pos);
|
|
printbin_seq(seq, tkey_extract_bits(tn->key, 0, tn->pos), tn->pos);
|
|
@@ -2152,7 +2154,7 @@ static void printnode_seq(struct seq_file *seq, int indent, struct node *n,
|
|
|
|
|
|
static void trie_dump_seq(struct seq_file *seq, struct trie *t)
|
|
static void trie_dump_seq(struct seq_file *seq, struct trie *t)
|
|
{
|
|
{
|
|
- struct node *n=t->trie;
|
|
|
|
|
|
+ struct node *n = t->trie;
|
|
int cindex=0;
|
|
int cindex=0;
|
|
int indent=1;
|
|
int indent=1;
|
|
int pend=0;
|
|
int pend=0;
|
|
@@ -2164,7 +2166,7 @@ static void trie_dump_seq(struct seq_file *seq, struct trie *t)
|
|
if (n) {
|
|
if (n) {
|
|
printnode_seq(seq, indent, n, pend, cindex, 0);
|
|
printnode_seq(seq, indent, n, pend, cindex, 0);
|
|
if (IS_TNODE(n)) {
|
|
if (IS_TNODE(n)) {
|
|
- struct tnode *tn=(struct tnode *)n;
|
|
|
|
|
|
+ struct tnode *tn = (struct tnode *)n;
|
|
pend = tn->pos+tn->bits;
|
|
pend = tn->pos+tn->bits;
|
|
putspace_seq(seq, indent); seq_printf(seq, "\\--\n");
|
|
putspace_seq(seq, indent); seq_printf(seq, "\\--\n");
|
|
indent += 3;
|
|
indent += 3;
|
|
@@ -2172,42 +2174,42 @@ static void trie_dump_seq(struct seq_file *seq, struct trie *t)
|
|
|
|
|
|
while (tn && cindex < (1 << tn->bits)) {
|
|
while (tn && cindex < (1 << tn->bits)) {
|
|
if (tn->child[cindex]) {
|
|
if (tn->child[cindex]) {
|
|
-
|
|
|
|
|
|
+
|
|
/* Got a child */
|
|
/* Got a child */
|
|
-
|
|
|
|
|
|
+
|
|
printnode_seq(seq, indent, tn->child[cindex], pend, cindex, tn->bits);
|
|
printnode_seq(seq, indent, tn->child[cindex], pend, cindex, tn->bits);
|
|
- if (IS_LEAF(tn->child[cindex])) {
|
|
|
|
|
|
+ if (IS_LEAF(tn->child[cindex])) {
|
|
cindex++;
|
|
cindex++;
|
|
-
|
|
|
|
|
|
+
|
|
}
|
|
}
|
|
else {
|
|
else {
|
|
- /*
|
|
|
|
- * New tnode. Decend one level
|
|
|
|
|
|
+ /*
|
|
|
|
+ * New tnode. Decend one level
|
|
*/
|
|
*/
|
|
-
|
|
|
|
|
|
+
|
|
depth++;
|
|
depth++;
|
|
- n=tn->child[cindex];
|
|
|
|
- tn=(struct tnode *)n;
|
|
|
|
- pend=tn->pos+tn->bits;
|
|
|
|
|
|
+ n = tn->child[cindex];
|
|
|
|
+ tn = (struct tnode *)n;
|
|
|
|
+ pend = tn->pos+tn->bits;
|
|
putspace_seq(seq, indent); seq_printf(seq, "\\--\n");
|
|
putspace_seq(seq, indent); seq_printf(seq, "\\--\n");
|
|
indent+=3;
|
|
indent+=3;
|
|
cindex=0;
|
|
cindex=0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
- else
|
|
|
|
|
|
+ else
|
|
cindex++;
|
|
cindex++;
|
|
|
|
|
|
/*
|
|
/*
|
|
- * Test if we are done
|
|
|
|
|
|
+ * Test if we are done
|
|
*/
|
|
*/
|
|
-
|
|
|
|
|
|
+
|
|
while (cindex >= (1 << tn->bits)) {
|
|
while (cindex >= (1 << tn->bits)) {
|
|
|
|
|
|
/*
|
|
/*
|
|
* Move upwards and test for root
|
|
* Move upwards and test for root
|
|
* pop off all traversed nodes
|
|
* pop off all traversed nodes
|
|
*/
|
|
*/
|
|
-
|
|
|
|
|
|
+
|
|
if (NODE_PARENT(tn) == NULL) {
|
|
if (NODE_PARENT(tn) == NULL) {
|
|
tn = NULL;
|
|
tn = NULL;
|
|
n = NULL;
|
|
n = NULL;
|
|
@@ -2217,8 +2219,8 @@ static void trie_dump_seq(struct seq_file *seq, struct trie *t)
|
|
cindex = tkey_extract_bits(tn->key, NODE_PARENT(tn)->pos, NODE_PARENT(tn)->bits);
|
|
cindex = tkey_extract_bits(tn->key, NODE_PARENT(tn)->pos, NODE_PARENT(tn)->bits);
|
|
tn = NODE_PARENT(tn);
|
|
tn = NODE_PARENT(tn);
|
|
cindex++;
|
|
cindex++;
|
|
- n=(struct node *)tn;
|
|
|
|
- pend=tn->pos+tn->bits;
|
|
|
|
|
|
+ n = (struct node *)tn;
|
|
|
|
+ pend = tn->pos+tn->bits;
|
|
indent-=3;
|
|
indent-=3;
|
|
depth--;
|
|
depth--;
|
|
}
|
|
}
|
|
@@ -2236,36 +2238,36 @@ static struct trie_stat *trie_stat_new(void)
|
|
{
|
|
{
|
|
struct trie_stat *s = kmalloc(sizeof(struct trie_stat), GFP_KERNEL);
|
|
struct trie_stat *s = kmalloc(sizeof(struct trie_stat), GFP_KERNEL);
|
|
int i;
|
|
int i;
|
|
-
|
|
|
|
- if(s) {
|
|
|
|
|
|
+
|
|
|
|
+ if (s) {
|
|
s->totdepth = 0;
|
|
s->totdepth = 0;
|
|
s->maxdepth = 0;
|
|
s->maxdepth = 0;
|
|
s->tnodes = 0;
|
|
s->tnodes = 0;
|
|
s->leaves = 0;
|
|
s->leaves = 0;
|
|
s->nullpointers = 0;
|
|
s->nullpointers = 0;
|
|
-
|
|
|
|
|
|
+
|
|
for(i=0; i< MAX_CHILDS; i++)
|
|
for(i=0; i< MAX_CHILDS; i++)
|
|
s->nodesizes[i] = 0;
|
|
s->nodesizes[i] = 0;
|
|
}
|
|
}
|
|
return s;
|
|
return s;
|
|
-}
|
|
|
|
|
|
+}
|
|
|
|
|
|
static struct trie_stat *trie_collect_stats(struct trie *t)
|
|
static struct trie_stat *trie_collect_stats(struct trie *t)
|
|
{
|
|
{
|
|
- struct node *n=t->trie;
|
|
|
|
|
|
+ struct node *n = t->trie;
|
|
struct trie_stat *s = trie_stat_new();
|
|
struct trie_stat *s = trie_stat_new();
|
|
int cindex = 0;
|
|
int cindex = 0;
|
|
int indent = 1;
|
|
int indent = 1;
|
|
int pend = 0;
|
|
int pend = 0;
|
|
int depth = 0;
|
|
int depth = 0;
|
|
|
|
|
|
- read_lock(&fib_lock);
|
|
|
|
|
|
+ read_lock(&fib_lock);
|
|
|
|
|
|
if (s) {
|
|
if (s) {
|
|
if (n) {
|
|
if (n) {
|
|
if (IS_TNODE(n)) {
|
|
if (IS_TNODE(n)) {
|
|
struct tnode *tn = (struct tnode *)n;
|
|
struct tnode *tn = (struct tnode *)n;
|
|
- pend=tn->pos+tn->bits;
|
|
|
|
|
|
+ pend = tn->pos+tn->bits;
|
|
indent += 3;
|
|
indent += 3;
|
|
s->nodesizes[tn->bits]++;
|
|
s->nodesizes[tn->bits]++;
|
|
depth++;
|
|
depth++;
|
|
@@ -2273,26 +2275,26 @@ static struct trie_stat *trie_collect_stats(struct trie *t)
|
|
while (tn && cindex < (1 << tn->bits)) {
|
|
while (tn && cindex < (1 << tn->bits)) {
|
|
if (tn->child[cindex]) {
|
|
if (tn->child[cindex]) {
|
|
/* Got a child */
|
|
/* Got a child */
|
|
-
|
|
|
|
- if (IS_LEAF(tn->child[cindex])) {
|
|
|
|
|
|
+
|
|
|
|
+ if (IS_LEAF(tn->child[cindex])) {
|
|
cindex++;
|
|
cindex++;
|
|
-
|
|
|
|
|
|
+
|
|
/* stats */
|
|
/* stats */
|
|
if (depth > s->maxdepth)
|
|
if (depth > s->maxdepth)
|
|
s->maxdepth = depth;
|
|
s->maxdepth = depth;
|
|
s->totdepth += depth;
|
|
s->totdepth += depth;
|
|
s->leaves++;
|
|
s->leaves++;
|
|
}
|
|
}
|
|
-
|
|
|
|
|
|
+
|
|
else {
|
|
else {
|
|
- /*
|
|
|
|
- * New tnode. Decend one level
|
|
|
|
|
|
+ /*
|
|
|
|
+ * New tnode. Decend one level
|
|
*/
|
|
*/
|
|
-
|
|
|
|
|
|
+
|
|
s->tnodes++;
|
|
s->tnodes++;
|
|
s->nodesizes[tn->bits]++;
|
|
s->nodesizes[tn->bits]++;
|
|
depth++;
|
|
depth++;
|
|
-
|
|
|
|
|
|
+
|
|
n = tn->child[cindex];
|
|
n = tn->child[cindex];
|
|
tn = (struct tnode *)n;
|
|
tn = (struct tnode *)n;
|
|
pend = tn->pos+tn->bits;
|
|
pend = tn->pos+tn->bits;
|
|
@@ -2303,13 +2305,13 @@ static struct trie_stat *trie_collect_stats(struct trie *t)
|
|
}
|
|
}
|
|
else {
|
|
else {
|
|
cindex++;
|
|
cindex++;
|
|
- s->nullpointers++;
|
|
|
|
|
|
+ s->nullpointers++;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
/*
|
|
- * Test if we are done
|
|
|
|
|
|
+ * Test if we are done
|
|
*/
|
|
*/
|
|
-
|
|
|
|
|
|
+
|
|
while (cindex >= (1 << tn->bits)) {
|
|
while (cindex >= (1 << tn->bits)) {
|
|
|
|
|
|
/*
|
|
/*
|
|
@@ -2317,7 +2319,7 @@ static struct trie_stat *trie_collect_stats(struct trie *t)
|
|
* pop off all traversed nodes
|
|
* pop off all traversed nodes
|
|
*/
|
|
*/
|
|
|
|
|
|
-
|
|
|
|
|
|
+
|
|
if (NODE_PARENT(tn) == NULL) {
|
|
if (NODE_PARENT(tn) == NULL) {
|
|
tn = NULL;
|
|
tn = NULL;
|
|
n = NULL;
|
|
n = NULL;
|
|
@@ -2326,9 +2328,9 @@ static struct trie_stat *trie_collect_stats(struct trie *t)
|
|
else {
|
|
else {
|
|
cindex = tkey_extract_bits(tn->key, NODE_PARENT(tn)->pos, NODE_PARENT(tn)->bits);
|
|
cindex = tkey_extract_bits(tn->key, NODE_PARENT(tn)->pos, NODE_PARENT(tn)->bits);
|
|
tn = NODE_PARENT(tn);
|
|
tn = NODE_PARENT(tn);
|
|
- cindex++;
|
|
|
|
|
|
+ cindex++;
|
|
n = (struct node *)tn;
|
|
n = (struct node *)tn;
|
|
- pend=tn->pos+tn->bits;
|
|
|
|
|
|
+ pend = tn->pos+tn->bits;
|
|
indent -= 3;
|
|
indent -= 3;
|
|
depth--;
|
|
depth--;
|
|
}
|
|
}
|
|
@@ -2339,7 +2341,7 @@ static struct trie_stat *trie_collect_stats(struct trie *t)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
- read_unlock(&fib_lock);
|
|
|
|
|
|
+ read_unlock(&fib_lock);
|
|
return s;
|
|
return s;
|
|
}
|
|
}
|
|
|
|
|
|
@@ -2375,7 +2377,7 @@ static void fib_triestat_seq_stop(struct seq_file *seq, void *v)
|
|
|
|
|
|
}
|
|
}
|
|
|
|
|
|
-/*
|
|
|
|
|
|
+/*
|
|
* This outputs /proc/net/fib_triestats
|
|
* This outputs /proc/net/fib_triestats
|
|
*
|
|
*
|
|
* It always works in backward compatibility mode.
|
|
* It always works in backward compatibility mode.
|
|
@@ -2401,7 +2403,7 @@ static void collect_and_show(struct trie *t, struct seq_file *seq)
|
|
avdepth=0;
|
|
avdepth=0;
|
|
seq_printf(seq, "Aver depth: %d.%02d\n", avdepth / 100, avdepth % 100 );
|
|
seq_printf(seq, "Aver depth: %d.%02d\n", avdepth / 100, avdepth % 100 );
|
|
seq_printf(seq, "Max depth: %4d\n", stat->maxdepth);
|
|
seq_printf(seq, "Max depth: %4d\n", stat->maxdepth);
|
|
-
|
|
|
|
|
|
+
|
|
seq_printf(seq, "Leaves: %d\n", stat->leaves);
|
|
seq_printf(seq, "Leaves: %d\n", stat->leaves);
|
|
bytes += sizeof(struct leaf) * stat->leaves;
|
|
bytes += sizeof(struct leaf) * stat->leaves;
|
|
seq_printf(seq, "Internal nodes: %d\n", stat->tnodes);
|
|
seq_printf(seq, "Internal nodes: %d\n", stat->tnodes);
|
|
@@ -2413,7 +2415,7 @@ static void collect_and_show(struct trie *t, struct seq_file *seq)
|
|
max--;
|
|
max--;
|
|
pointers = 0;
|
|
pointers = 0;
|
|
|
|
|
|
- for (i = 1; i <= max; i++)
|
|
|
|
|
|
+ for (i = 1; i <= max; i++)
|
|
if (stat->nodesizes[i] != 0) {
|
|
if (stat->nodesizes[i] != 0) {
|
|
seq_printf(seq, " %d: %d", i, stat->nodesizes[i]);
|
|
seq_printf(seq, " %d: %d", i, stat->nodesizes[i]);
|
|
pointers += (1<<i) * stat->nodesizes[i];
|
|
pointers += (1<<i) * stat->nodesizes[i];
|
|
@@ -2444,30 +2446,30 @@ static void collect_and_show(struct trie *t, struct seq_file *seq)
|
|
static int fib_triestat_seq_show(struct seq_file *seq, void *v)
|
|
static int fib_triestat_seq_show(struct seq_file *seq, void *v)
|
|
{
|
|
{
|
|
char bf[128];
|
|
char bf[128];
|
|
-
|
|
|
|
|
|
+
|
|
if (v == SEQ_START_TOKEN) {
|
|
if (v == SEQ_START_TOKEN) {
|
|
- seq_printf(seq, "Basic info: size of leaf: %Zd bytes, size of tnode: %Zd bytes.\n",
|
|
|
|
|
|
+ seq_printf(seq, "Basic info: size of leaf: %Zd bytes, size of tnode: %Zd bytes.\n",
|
|
sizeof(struct leaf), sizeof(struct tnode));
|
|
sizeof(struct leaf), sizeof(struct tnode));
|
|
- if (trie_local)
|
|
|
|
|
|
+ if (trie_local)
|
|
collect_and_show(trie_local, seq);
|
|
collect_and_show(trie_local, seq);
|
|
|
|
|
|
- if (trie_main)
|
|
|
|
|
|
+ if (trie_main)
|
|
collect_and_show(trie_main, seq);
|
|
collect_and_show(trie_main, seq);
|
|
}
|
|
}
|
|
else {
|
|
else {
|
|
snprintf(bf, sizeof(bf),
|
|
snprintf(bf, sizeof(bf),
|
|
"*\t%08X\t%08X", 200, 400);
|
|
"*\t%08X\t%08X", 200, 400);
|
|
-
|
|
|
|
|
|
+
|
|
seq_printf(seq, "%-127s\n", bf);
|
|
seq_printf(seq, "%-127s\n", bf);
|
|
}
|
|
}
|
|
return 0;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
static struct seq_operations fib_triestat_seq_ops = {
|
|
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,
|
|
|
|
|
|
+ .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)
|
|
static int fib_triestat_seq_open(struct inode *inode, struct file *file)
|
|
@@ -2479,7 +2481,7 @@ static int fib_triestat_seq_open(struct inode *inode, struct file *file)
|
|
if (rc)
|
|
if (rc)
|
|
goto out_kfree;
|
|
goto out_kfree;
|
|
|
|
|
|
- seq = file->private_data;
|
|
|
|
|
|
+ seq = file->private_data;
|
|
out:
|
|
out:
|
|
return rc;
|
|
return rc;
|
|
out_kfree:
|
|
out_kfree:
|
|
@@ -2487,11 +2489,11 @@ out_kfree:
|
|
}
|
|
}
|
|
|
|
|
|
static struct file_operations fib_triestat_seq_fops = {
|
|
static struct file_operations fib_triestat_seq_fops = {
|
|
- .owner = THIS_MODULE,
|
|
|
|
- .open = fib_triestat_seq_open,
|
|
|
|
- .read = seq_read,
|
|
|
|
- .llseek = seq_lseek,
|
|
|
|
- .release = seq_release_private,
|
|
|
|
|
|
+ .owner = THIS_MODULE,
|
|
|
|
+ .open = fib_triestat_seq_open,
|
|
|
|
+ .read = seq_read,
|
|
|
|
+ .llseek = seq_lseek,
|
|
|
|
+ .release = seq_release_private,
|
|
};
|
|
};
|
|
|
|
|
|
int __init fib_stat_proc_init(void)
|
|
int __init fib_stat_proc_init(void)
|
|
@@ -2536,7 +2538,7 @@ static void fib_trie_seq_stop(struct seq_file *seq, void *v)
|
|
|
|
|
|
}
|
|
}
|
|
|
|
|
|
-/*
|
|
|
|
|
|
+/*
|
|
* This outputs /proc/net/fib_trie.
|
|
* This outputs /proc/net/fib_trie.
|
|
*
|
|
*
|
|
* It always works in backward compatibility mode.
|
|
* It always works in backward compatibility mode.
|
|
@@ -2548,10 +2550,10 @@ static int fib_trie_seq_show(struct seq_file *seq, void *v)
|
|
char bf[128];
|
|
char bf[128];
|
|
|
|
|
|
if (v == SEQ_START_TOKEN) {
|
|
if (v == SEQ_START_TOKEN) {
|
|
- if (trie_local)
|
|
|
|
|
|
+ if (trie_local)
|
|
trie_dump_seq(seq, trie_local);
|
|
trie_dump_seq(seq, trie_local);
|
|
|
|
|
|
- if (trie_main)
|
|
|
|
|
|
+ if (trie_main)
|
|
trie_dump_seq(seq, trie_main);
|
|
trie_dump_seq(seq, trie_main);
|
|
}
|
|
}
|
|
|
|
|
|
@@ -2565,10 +2567,10 @@ static int fib_trie_seq_show(struct seq_file *seq, void *v)
|
|
}
|
|
}
|
|
|
|
|
|
static struct seq_operations fib_trie_seq_ops = {
|
|
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)
|
|
static int fib_trie_seq_open(struct inode *inode, struct file *file)
|
|
@@ -2580,7 +2582,7 @@ static int fib_trie_seq_open(struct inode *inode, struct file *file)
|
|
if (rc)
|
|
if (rc)
|
|
goto out_kfree;
|
|
goto out_kfree;
|
|
|
|
|
|
- seq = file->private_data;
|
|
|
|
|
|
+ seq = file->private_data;
|
|
out:
|
|
out:
|
|
return rc;
|
|
return rc;
|
|
out_kfree:
|
|
out_kfree:
|
|
@@ -2588,11 +2590,11 @@ out_kfree:
|
|
}
|
|
}
|
|
|
|
|
|
static struct file_operations fib_trie_seq_fops = {
|
|
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,
|
|
|
|
|
|
+ .owner = THIS_MODULE,
|
|
|
|
+ .open = fib_trie_seq_open,
|
|
|
|
+ .read = seq_read,
|
|
|
|
+ .llseek = seq_lseek,
|
|
|
|
+ .release= seq_release_private,
|
|
};
|
|
};
|
|
|
|
|
|
int __init fib_proc_init(void)
|
|
int __init fib_proc_init(void)
|