diff options
Diffstat (limited to 'target/linux/generic/patches-3.18/080-05-fib_trie-Merge-leaf-into-tnode.patch')
| -rw-r--r-- | target/linux/generic/patches-3.18/080-05-fib_trie-Merge-leaf-into-tnode.patch | 928 |
1 files changed, 928 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.18/080-05-fib_trie-Merge-leaf-into-tnode.patch b/target/linux/generic/patches-3.18/080-05-fib_trie-Merge-leaf-into-tnode.patch new file mode 100644 index 0000000..a3393bf --- /dev/null +++ b/target/linux/generic/patches-3.18/080-05-fib_trie-Merge-leaf-into-tnode.patch @@ -0,0 +1,928 @@ +From: Alexander Duyck <alexander.h.duyck@redhat.com> +Date: Wed, 31 Dec 2014 10:55:47 -0800 +Subject: [PATCH] fib_trie: Merge leaf into tnode + +This change makes it so that leaf and tnode are the same struct. As a +result there is no need for rt_trie_node anymore since everyting can be +merged into tnode. + +On 32b systems this results in the leaf being 4 bytes larger, however I +don't know if that is really an issue as this and an eariler patch that +added bits & pos have increased the size from 20 to 28. If I am not +mistaken slub/slab allocate on power of 2 sizes so 20 was likely being +rounded up to 32 anyway. + +Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/net/ipv4/fib_trie.c ++++ b/net/ipv4/fib_trie.c +@@ -96,32 +96,16 @@ struct tnode { + unsigned char pos; /* 2log(KEYLENGTH) bits needed */ + struct tnode __rcu *parent; + struct rcu_head rcu; +- /* everything above this comment must be the same as rt_trie_node */ +- unsigned int full_children; /* KEYLENGTH bits needed */ +- unsigned int empty_children; /* KEYLENGTH bits needed */ +- struct rt_trie_node __rcu *child[0]; +-}; +- +-/* This struct represents the shared bits between tnode and leaf. If any +- * ordering is changed here is must also be updated in tnode and leaf as +- * well. +- */ +-struct rt_trie_node { +- t_key key; +- unsigned char bits; +- unsigned char pos; +- struct tnode __rcu *parent; +- struct rcu_head rcu; +-}; +- +-struct leaf { +- t_key key; +- unsigned char bits; +- unsigned char pos; +- struct tnode __rcu *parent; +- struct rcu_head rcu; +- /* everything above this comment must be the same as rt_trie_node */ +- struct hlist_head list; ++ union { ++ /* The fields in this struct are valid if bits > 0 (TNODE) */ ++ struct { ++ unsigned int full_children; /* KEYLENGTH bits needed */ ++ unsigned int empty_children; /* KEYLENGTH bits needed */ ++ struct tnode __rcu *child[0]; ++ }; ++ /* This list pointer if valid if bits == 0 (LEAF) */ ++ struct hlist_head list; ++ }; + }; + + struct leaf_info { +@@ -154,15 +138,15 @@ struct trie_stat { + }; + + struct trie { +- struct rt_trie_node __rcu *trie; ++ struct tnode __rcu *trie; + #ifdef CONFIG_IP_FIB_TRIE_STATS + struct trie_use_stats __percpu *stats; + #endif + }; + +-static void tnode_put_child_reorg(struct tnode *tn, int i, struct rt_trie_node *n, ++static void tnode_put_child_reorg(struct tnode *tn, int i, struct tnode *n, + int wasfull); +-static struct rt_trie_node *resize(struct trie *t, struct tnode *tn); ++static struct tnode *resize(struct trie *t, struct tnode *tn); + static struct tnode *inflate(struct trie *t, struct tnode *tn); + static struct tnode *halve(struct trie *t, struct tnode *tn); + /* tnodes to free after resize(); protected by RTNL */ +@@ -186,10 +170,10 @@ static struct kmem_cache *trie_leaf_kmem + #define node_parent_rcu(n) rcu_dereference_rtnl((n)->parent) + + /* wrapper for rcu_assign_pointer */ +-static inline void node_set_parent(struct rt_trie_node *node, struct tnode *ptr) ++static inline void node_set_parent(struct tnode *n, struct tnode *tp) + { +- if (node) +- rcu_assign_pointer(node->parent, ptr); ++ if (n) ++ rcu_assign_pointer(n->parent, tp); + } + + #define NODE_INIT_PARENT(n, p) RCU_INIT_POINTER((n)->parent, p) +@@ -205,7 +189,7 @@ static inline int tnode_child_length(con + /* + * caller must hold RTNL + */ +-static inline struct rt_trie_node *tnode_get_child(const struct tnode *tn, unsigned int i) ++static inline struct tnode *tnode_get_child(const struct tnode *tn, unsigned int i) + { + BUG_ON(i >= tnode_child_length(tn)); + +@@ -215,7 +199,7 @@ static inline struct rt_trie_node *tnode + /* + * caller must hold RCU read lock or RTNL + */ +-static inline struct rt_trie_node *tnode_get_child_rcu(const struct tnode *tn, unsigned int i) ++static inline struct tnode *tnode_get_child_rcu(const struct tnode *tn, unsigned int i) + { + BUG_ON(i >= tnode_child_length(tn)); + +@@ -340,11 +324,11 @@ static inline void alias_free_mem_rcu(st + } + + #define TNODE_KMALLOC_MAX \ +- ilog2((PAGE_SIZE - sizeof(struct tnode)) / sizeof(struct rt_trie_node *)) ++ ilog2((PAGE_SIZE - sizeof(struct tnode)) / sizeof(struct tnode *)) + + static void __node_free_rcu(struct rcu_head *head) + { +- struct rt_trie_node *n = container_of(head, struct rt_trie_node, rcu); ++ struct tnode *n = container_of(head, struct tnode, rcu); + + if (IS_LEAF(n)) + kmem_cache_free(trie_leaf_kmem, n); +@@ -395,9 +379,9 @@ static void tnode_free_flush(void) + } + } + +-static struct leaf *leaf_new(t_key key) ++static struct tnode *leaf_new(t_key key) + { +- struct leaf *l = kmem_cache_alloc(trie_leaf_kmem, GFP_KERNEL); ++ struct tnode *l = kmem_cache_alloc(trie_leaf_kmem, GFP_KERNEL); + if (l) { + l->parent = NULL; + /* set key and pos to reflect full key value +@@ -444,7 +428,7 @@ static struct tnode *tnode_new(t_key key + } + + pr_debug("AT %p s=%zu %zu\n", tn, sizeof(struct tnode), +- sizeof(struct rt_trie_node *) << bits); ++ sizeof(struct tnode *) << bits); + return tn; + } + +@@ -453,13 +437,13 @@ static struct tnode *tnode_new(t_key key + * and no bits are skipped. See discussion in dyntree paper p. 6 + */ + +-static inline int tnode_full(const struct tnode *tn, const struct rt_trie_node *n) ++static inline int tnode_full(const struct tnode *tn, const struct tnode *n) + { + return n && IS_TNODE(n) && (n->pos == (tn->pos + tn->bits)); + } + + static inline void put_child(struct tnode *tn, int i, +- struct rt_trie_node *n) ++ struct tnode *n) + { + tnode_put_child_reorg(tn, i, n, -1); + } +@@ -469,10 +453,10 @@ static inline void put_child(struct tnod + * Update the value of full_children and empty_children. + */ + +-static void tnode_put_child_reorg(struct tnode *tn, int i, struct rt_trie_node *n, ++static void tnode_put_child_reorg(struct tnode *tn, int i, struct tnode *n, + int wasfull) + { +- struct rt_trie_node *chi = rtnl_dereference(tn->child[i]); ++ struct tnode *chi = rtnl_dereference(tn->child[i]); + int isfull; + + BUG_ON(i >= 1<<tn->bits); +@@ -499,10 +483,9 @@ static void tnode_put_child_reorg(struct + } + + #define MAX_WORK 10 +-static struct rt_trie_node *resize(struct trie *t, struct tnode *tn) ++static struct tnode *resize(struct trie *t, struct tnode *tn) + { +- struct rt_trie_node *n = NULL; +- struct tnode *old_tn; ++ struct tnode *old_tn, *n = NULL; + int inflate_threshold_use; + int halve_threshold_use; + int max_work; +@@ -614,7 +597,7 @@ static struct rt_trie_node *resize(struc + + /* Return if at least one inflate is run */ + if (max_work != MAX_WORK) +- return (struct rt_trie_node *) tn; ++ return tn; + + /* + * Halve as long as the number of empty children in this +@@ -650,13 +633,13 @@ no_children: + tnode_free_safe(tn); + return n; + } +- return (struct rt_trie_node *) tn; ++ return tn; + } + + + static void tnode_clean_free(struct tnode *tn) + { +- struct rt_trie_node *tofree; ++ struct tnode *tofree; + int i; + + for (i = 0; i < tnode_child_length(tn); i++) { +@@ -667,10 +650,10 @@ static void tnode_clean_free(struct tnod + node_free(tn); + } + +-static struct tnode *inflate(struct trie *t, struct tnode *tn) ++static struct tnode *inflate(struct trie *t, struct tnode *oldtnode) + { +- struct tnode *oldtnode = tn; +- int olen = tnode_child_length(tn); ++ int olen = tnode_child_length(oldtnode); ++ struct tnode *tn; + int i; + + pr_debug("In inflate\n"); +@@ -690,11 +673,8 @@ static struct tnode *inflate(struct trie + for (i = 0; i < olen; i++) { + struct tnode *inode; + +- inode = (struct tnode *) tnode_get_child(oldtnode, i); +- if (inode && +- IS_TNODE(inode) && +- inode->pos == oldtnode->pos + oldtnode->bits && +- inode->bits > 1) { ++ inode = tnode_get_child(oldtnode, i); ++ if (tnode_full(oldtnode, inode) && inode->bits > 1) { + struct tnode *left, *right; + t_key m = ~0U << (KEYLENGTH - 1) >> inode->pos; + +@@ -711,33 +691,29 @@ static struct tnode *inflate(struct trie + goto nomem; + } + +- put_child(tn, 2*i, (struct rt_trie_node *) left); +- put_child(tn, 2*i+1, (struct rt_trie_node *) right); ++ put_child(tn, 2*i, left); ++ put_child(tn, 2*i+1, right); + } + } + + for (i = 0; i < olen; i++) { +- struct tnode *inode; +- struct rt_trie_node *node = tnode_get_child(oldtnode, i); ++ struct tnode *inode = tnode_get_child(oldtnode, i); + struct tnode *left, *right; + int size, j; + + /* An empty child */ +- if (node == NULL) ++ if (inode == NULL) + continue; + + /* A leaf or an internal node with skipped bits */ +- +- if (IS_LEAF(node) || (node->pos > (tn->pos + tn->bits - 1))) { ++ if (!tnode_full(oldtnode, inode)) { + put_child(tn, +- tkey_extract_bits(node->key, oldtnode->pos, oldtnode->bits + 1), +- node); ++ tkey_extract_bits(inode->key, tn->pos, tn->bits), ++ inode); + continue; + } + + /* An internal node with two children */ +- inode = (struct tnode *) node; +- + if (inode->bits == 1) { + put_child(tn, 2*i, rtnl_dereference(inode->child[0])); + put_child(tn, 2*i+1, rtnl_dereference(inode->child[1])); +@@ -769,12 +745,12 @@ static struct tnode *inflate(struct trie + * bit to zero. + */ + +- left = (struct tnode *) tnode_get_child(tn, 2*i); ++ left = tnode_get_child(tn, 2*i); + put_child(tn, 2*i, NULL); + + BUG_ON(!left); + +- right = (struct tnode *) tnode_get_child(tn, 2*i+1); ++ right = tnode_get_child(tn, 2*i+1); + put_child(tn, 2*i+1, NULL); + + BUG_ON(!right); +@@ -796,12 +772,11 @@ nomem: + return ERR_PTR(-ENOMEM); + } + +-static struct tnode *halve(struct trie *t, struct tnode *tn) ++static struct tnode *halve(struct trie *t, struct tnode *oldtnode) + { +- struct tnode *oldtnode = tn; +- struct rt_trie_node *left, *right; ++ int olen = tnode_child_length(oldtnode); ++ struct tnode *tn, *left, *right; + int i; +- int olen = tnode_child_length(tn); + + pr_debug("In halve\n"); + +@@ -830,7 +805,7 @@ static struct tnode *halve(struct trie * + if (!newn) + goto nomem; + +- put_child(tn, i/2, (struct rt_trie_node *)newn); ++ put_child(tn, i/2, newn); + } + + } +@@ -855,7 +830,7 @@ static struct tnode *halve(struct trie * + } + + /* Two nonempty children */ +- newBinNode = (struct tnode *) tnode_get_child(tn, i/2); ++ newBinNode = tnode_get_child(tn, i/2); + put_child(tn, i/2, NULL); + put_child(newBinNode, 0, left); + put_child(newBinNode, 1, right); +@@ -871,7 +846,7 @@ nomem: + /* readside must use rcu_read_lock currently dump routines + via get_fa_head and dump */ + +-static struct leaf_info *find_leaf_info(struct leaf *l, int plen) ++static struct leaf_info *find_leaf_info(struct tnode *l, int plen) + { + struct hlist_head *head = &l->list; + struct leaf_info *li; +@@ -883,7 +858,7 @@ static struct leaf_info *find_leaf_info( + return NULL; + } + +-static inline struct list_head *get_fa_head(struct leaf *l, int plen) ++static inline struct list_head *get_fa_head(struct tnode *l, int plen) + { + struct leaf_info *li = find_leaf_info(l, plen); + +@@ -915,32 +890,25 @@ static void insert_leaf_info(struct hlis + + /* rcu_read_lock needs to be hold by caller from readside */ + +-static struct leaf * +-fib_find_node(struct trie *t, u32 key) ++static struct tnode *fib_find_node(struct trie *t, u32 key) + { +- int pos; +- struct tnode *tn; +- struct rt_trie_node *n; +- +- pos = 0; +- n = rcu_dereference_rtnl(t->trie); ++ struct tnode *n = rcu_dereference_rtnl(t->trie); ++ int pos = 0; + + while (n && IS_TNODE(n)) { +- tn = (struct tnode *) n; +- +- if (tkey_sub_equals(tn->key, pos, tn->pos-pos, key)) { +- pos = tn->pos + tn->bits; +- n = tnode_get_child_rcu(tn, ++ if (tkey_sub_equals(n->key, pos, n->pos-pos, key)) { ++ pos = n->pos + n->bits; ++ n = tnode_get_child_rcu(n, + tkey_extract_bits(key, +- tn->pos, +- tn->bits)); ++ n->pos, ++ n->bits)); + } else + break; + } + /* Case we have found a leaf. Compare prefixes */ + + if (n != NULL && IS_LEAF(n) && tkey_equals(key, n->key)) +- return (struct leaf *)n; ++ return n; + + return NULL; + } +@@ -956,14 +924,13 @@ static void trie_rebalance(struct trie * + while (tn != NULL && (tp = node_parent(tn)) != NULL) { + cindex = tkey_extract_bits(key, tp->pos, tp->bits); + wasfull = tnode_full(tp, tnode_get_child(tp, cindex)); +- tn = (struct tnode *)resize(t, tn); ++ tn = resize(t, tn); + +- tnode_put_child_reorg(tp, cindex, +- (struct rt_trie_node *)tn, wasfull); ++ tnode_put_child_reorg(tp, cindex, tn, wasfull); + + tp = node_parent(tn); + if (!tp) +- rcu_assign_pointer(t->trie, (struct rt_trie_node *)tn); ++ rcu_assign_pointer(t->trie, tn); + + tnode_free_flush(); + if (!tp) +@@ -973,9 +940,9 @@ static void trie_rebalance(struct trie * + + /* Handle last (top) tnode */ + if (IS_TNODE(tn)) +- tn = (struct tnode *)resize(t, tn); ++ tn = resize(t, tn); + +- rcu_assign_pointer(t->trie, (struct rt_trie_node *)tn); ++ rcu_assign_pointer(t->trie, tn); + tnode_free_flush(); + } + +@@ -985,8 +952,8 @@ static struct list_head *fib_insert_node + { + int pos, newpos; + struct tnode *tp = NULL, *tn = NULL; +- struct rt_trie_node *n; +- struct leaf *l; ++ struct tnode *n; ++ struct tnode *l; + int missbit; + struct list_head *fa_head = NULL; + struct leaf_info *li; +@@ -1014,17 +981,15 @@ static struct list_head *fib_insert_node + */ + + while (n && IS_TNODE(n)) { +- tn = (struct tnode *) n; +- +- if (tkey_sub_equals(tn->key, pos, tn->pos-pos, key)) { +- tp = tn; +- pos = tn->pos + tn->bits; +- n = tnode_get_child(tn, ++ if (tkey_sub_equals(n->key, pos, n->pos-pos, key)) { ++ tp = n; ++ pos = n->pos + n->bits; ++ n = tnode_get_child(n, + tkey_extract_bits(key, +- tn->pos, +- tn->bits)); ++ n->pos, ++ n->bits)); + +- BUG_ON(n && node_parent(n) != tn); ++ BUG_ON(n && node_parent(n) != tp); + } else + break; + } +@@ -1040,14 +1005,13 @@ static struct list_head *fib_insert_node + /* Case 1: n is a leaf. Compare prefixes */ + + if (n != NULL && IS_LEAF(n) && tkey_equals(key, n->key)) { +- l = (struct leaf *) n; + li = leaf_info_new(plen); + + if (!li) + return NULL; + + fa_head = &li->falh; +- insert_leaf_info(&l->list, li); ++ insert_leaf_info(&n->list, li); + goto done; + } + l = leaf_new(key); +@@ -1068,10 +1032,10 @@ static struct list_head *fib_insert_node + if (t->trie && n == NULL) { + /* Case 2: n is NULL, and will just insert a new leaf */ + +- node_set_parent((struct rt_trie_node *)l, tp); ++ node_set_parent(l, tp); + + cindex = tkey_extract_bits(key, tp->pos, tp->bits); +- put_child(tp, cindex, (struct rt_trie_node *)l); ++ put_child(tp, cindex, l); + } else { + /* Case 3: n is a LEAF or a TNODE and the key doesn't match. */ + /* +@@ -1094,17 +1058,17 @@ static struct list_head *fib_insert_node + return NULL; + } + +- node_set_parent((struct rt_trie_node *)tn, tp); ++ node_set_parent(tn, tp); + + missbit = tkey_extract_bits(key, newpos, 1); +- put_child(tn, missbit, (struct rt_trie_node *)l); ++ put_child(tn, missbit, l); + put_child(tn, 1-missbit, n); + + if (tp) { + cindex = tkey_extract_bits(key, tp->pos, tp->bits); +- put_child(tp, cindex, (struct rt_trie_node *)tn); ++ put_child(tp, cindex, tn); + } else { +- rcu_assign_pointer(t->trie, (struct rt_trie_node *)tn); ++ rcu_assign_pointer(t->trie, tn); + } + + tp = tn; +@@ -1134,7 +1098,7 @@ int fib_table_insert(struct fib_table *t + u8 tos = cfg->fc_tos; + u32 key, mask; + int err; +- struct leaf *l; ++ struct tnode *l; + + if (plen > 32) + return -EINVAL; +@@ -1292,7 +1256,7 @@ err: + } + + /* should be called with rcu_read_lock */ +-static int check_leaf(struct fib_table *tb, struct trie *t, struct leaf *l, ++static int check_leaf(struct fib_table *tb, struct trie *t, struct tnode *l, + t_key key, const struct flowi4 *flp, + struct fib_result *res, int fib_flags) + { +@@ -1365,7 +1329,7 @@ int fib_table_lookup(struct fib_table *t + struct trie_use_stats __percpu *stats = t->stats; + #endif + int ret; +- struct rt_trie_node *n; ++ struct tnode *n; + struct tnode *pn; + unsigned int pos, bits; + t_key key = ntohl(flp->daddr); +@@ -1387,11 +1351,11 @@ int fib_table_lookup(struct fib_table *t + + /* Just a leaf? */ + if (IS_LEAF(n)) { +- ret = check_leaf(tb, t, (struct leaf *)n, key, flp, res, fib_flags); ++ ret = check_leaf(tb, t, n, key, flp, res, fib_flags); + goto found; + } + +- pn = (struct tnode *) n; ++ pn = n; + chopped_off = 0; + + while (pn) { +@@ -1412,13 +1376,13 @@ int fib_table_lookup(struct fib_table *t + } + + if (IS_LEAF(n)) { +- ret = check_leaf(tb, t, (struct leaf *)n, key, flp, res, fib_flags); ++ ret = check_leaf(tb, t, n, key, flp, res, fib_flags); + if (ret > 0) + goto backtrace; + goto found; + } + +- cn = (struct tnode *)n; ++ cn = n; + + /* + * It's a tnode, and we can do some extra checks here if we +@@ -1506,7 +1470,7 @@ int fib_table_lookup(struct fib_table *t + current_prefix_length = mp; + } + +- pn = (struct tnode *)n; /* Descend */ ++ pn = n; /* Descend */ + chopped_off = 0; + continue; + +@@ -1557,7 +1521,7 @@ EXPORT_SYMBOL_GPL(fib_table_lookup); + /* + * Remove the leaf and return parent. + */ +-static void trie_leaf_remove(struct trie *t, struct leaf *l) ++static void trie_leaf_remove(struct trie *t, struct tnode *l) + { + struct tnode *tp = node_parent(l); + +@@ -1584,7 +1548,7 @@ int fib_table_delete(struct fib_table *t + u8 tos = cfg->fc_tos; + struct fib_alias *fa, *fa_to_delete; + struct list_head *fa_head; +- struct leaf *l; ++ struct tnode *l; + struct leaf_info *li; + + if (plen > 32) +@@ -1682,7 +1646,7 @@ static int trie_flush_list(struct list_h + return found; + } + +-static int trie_flush_leaf(struct leaf *l) ++static int trie_flush_leaf(struct tnode *l) + { + int found = 0; + struct hlist_head *lih = &l->list; +@@ -1704,7 +1668,7 @@ static int trie_flush_leaf(struct leaf * + * Scan for the next right leaf starting at node p->child[idx] + * Since we have back pointer, no recursion necessary. + */ +-static struct leaf *leaf_walk_rcu(struct tnode *p, struct rt_trie_node *c) ++static struct tnode *leaf_walk_rcu(struct tnode *p, struct tnode *c) + { + do { + t_key idx; +@@ -1720,47 +1684,46 @@ static struct leaf *leaf_walk_rcu(struct + continue; + + if (IS_LEAF(c)) +- return (struct leaf *) c; ++ return c; + + /* Rescan start scanning in new node */ +- p = (struct tnode *) c; ++ p = c; + idx = 0; + } + + /* Node empty, walk back up to parent */ +- c = (struct rt_trie_node *) p; ++ c = p; + } while ((p = node_parent_rcu(c)) != NULL); + + return NULL; /* Root of trie */ + } + +-static struct leaf *trie_firstleaf(struct trie *t) ++static struct tnode *trie_firstleaf(struct trie *t) + { +- struct tnode *n = (struct tnode *)rcu_dereference_rtnl(t->trie); ++ struct tnode *n = rcu_dereference_rtnl(t->trie); + + if (!n) + return NULL; + + if (IS_LEAF(n)) /* trie is just a leaf */ +- return (struct leaf *) n; ++ return n; + + return leaf_walk_rcu(n, NULL); + } + +-static struct leaf *trie_nextleaf(struct leaf *l) ++static struct tnode *trie_nextleaf(struct tnode *l) + { +- struct rt_trie_node *c = (struct rt_trie_node *) l; +- struct tnode *p = node_parent_rcu(c); ++ struct tnode *p = node_parent_rcu(l); + + if (!p) + return NULL; /* trie with just one leaf */ + +- return leaf_walk_rcu(p, c); ++ return leaf_walk_rcu(p, l); + } + +-static struct leaf *trie_leafindex(struct trie *t, int index) ++static struct tnode *trie_leafindex(struct trie *t, int index) + { +- struct leaf *l = trie_firstleaf(t); ++ struct tnode *l = trie_firstleaf(t); + + while (l && index-- > 0) + l = trie_nextleaf(l); +@@ -1775,7 +1738,7 @@ static struct leaf *trie_leafindex(struc + int fib_table_flush(struct fib_table *tb) + { + struct trie *t = (struct trie *) tb->tb_data; +- struct leaf *l, *ll = NULL; ++ struct tnode *l, *ll = NULL; + int found = 0; + + for (l = trie_firstleaf(t); l; l = trie_nextleaf(l)) { +@@ -1840,7 +1803,7 @@ static int fn_trie_dump_fa(t_key key, in + return skb->len; + } + +-static int fn_trie_dump_leaf(struct leaf *l, struct fib_table *tb, ++static int fn_trie_dump_leaf(struct tnode *l, struct fib_table *tb, + struct sk_buff *skb, struct netlink_callback *cb) + { + struct leaf_info *li; +@@ -1876,7 +1839,7 @@ static int fn_trie_dump_leaf(struct leaf + int fib_table_dump(struct fib_table *tb, struct sk_buff *skb, + struct netlink_callback *cb) + { +- struct leaf *l; ++ struct tnode *l; + struct trie *t = (struct trie *) tb->tb_data; + t_key key = cb->args[2]; + int count = cb->args[3]; +@@ -1922,7 +1885,7 @@ void __init fib_trie_init(void) + 0, SLAB_PANIC, NULL); + + trie_leaf_kmem = kmem_cache_create("ip_fib_trie", +- max(sizeof(struct leaf), ++ max(sizeof(struct tnode), + sizeof(struct leaf_info)), + 0, SLAB_PANIC, NULL); + } +@@ -1965,7 +1928,7 @@ struct fib_trie_iter { + unsigned int depth; + }; + +-static struct rt_trie_node *fib_trie_get_next(struct fib_trie_iter *iter) ++static struct tnode *fib_trie_get_next(struct fib_trie_iter *iter) + { + struct tnode *tn = iter->tnode; + unsigned int cindex = iter->index; +@@ -1979,7 +1942,7 @@ static struct rt_trie_node *fib_trie_get + iter->tnode, iter->index, iter->depth); + rescan: + while (cindex < (1<<tn->bits)) { +- struct rt_trie_node *n = tnode_get_child_rcu(tn, cindex); ++ struct tnode *n = tnode_get_child_rcu(tn, cindex); + + if (n) { + if (IS_LEAF(n)) { +@@ -1987,7 +1950,7 @@ rescan: + iter->index = cindex + 1; + } else { + /* push down one level */ +- iter->tnode = (struct tnode *) n; ++ iter->tnode = n; + iter->index = 0; + ++iter->depth; + } +@@ -1998,7 +1961,7 @@ rescan: + } + + /* Current node exhausted, pop back up */ +- p = node_parent_rcu((struct rt_trie_node *)tn); ++ p = node_parent_rcu(tn); + if (p) { + cindex = tkey_extract_bits(tn->key, p->pos, p->bits)+1; + tn = p; +@@ -2010,10 +1973,10 @@ rescan: + return NULL; + } + +-static struct rt_trie_node *fib_trie_get_first(struct fib_trie_iter *iter, ++static struct tnode *fib_trie_get_first(struct fib_trie_iter *iter, + struct trie *t) + { +- struct rt_trie_node *n; ++ struct tnode *n; + + if (!t) + return NULL; +@@ -2023,7 +1986,7 @@ static struct rt_trie_node *fib_trie_get + return NULL; + + if (IS_TNODE(n)) { +- iter->tnode = (struct tnode *) n; ++ iter->tnode = n; + iter->index = 0; + iter->depth = 1; + } else { +@@ -2037,7 +2000,7 @@ static struct rt_trie_node *fib_trie_get + + static void trie_collect_stats(struct trie *t, struct trie_stat *s) + { +- struct rt_trie_node *n; ++ struct tnode *n; + struct fib_trie_iter iter; + + memset(s, 0, sizeof(*s)); +@@ -2045,7 +2008,6 @@ static void trie_collect_stats(struct tr + rcu_read_lock(); + for (n = fib_trie_get_first(&iter, t); n; n = fib_trie_get_next(&iter)) { + if (IS_LEAF(n)) { +- struct leaf *l = (struct leaf *)n; + struct leaf_info *li; + + s->leaves++; +@@ -2053,18 +2015,17 @@ static void trie_collect_stats(struct tr + if (iter.depth > s->maxdepth) + s->maxdepth = iter.depth; + +- hlist_for_each_entry_rcu(li, &l->list, hlist) ++ hlist_for_each_entry_rcu(li, &n->list, hlist) + ++s->prefixes; + } else { +- const struct tnode *tn = (const struct tnode *) n; + int i; + + s->tnodes++; +- if (tn->bits < MAX_STAT_DEPTH) +- s->nodesizes[tn->bits]++; ++ if (n->bits < MAX_STAT_DEPTH) ++ s->nodesizes[n->bits]++; + +- for (i = 0; i < (1<<tn->bits); i++) +- if (!tn->child[i]) ++ for (i = 0; i < tnode_child_length(n); i++) ++ if (!rcu_access_pointer(n->child[i])) + s->nullpointers++; + } + } +@@ -2088,7 +2049,7 @@ static void trie_show_stats(struct seq_f + seq_printf(seq, "\tMax depth: %u\n", stat->maxdepth); + + seq_printf(seq, "\tLeaves: %u\n", stat->leaves); +- bytes = sizeof(struct leaf) * stat->leaves; ++ bytes = sizeof(struct tnode) * stat->leaves; + + seq_printf(seq, "\tPrefixes: %u\n", stat->prefixes); + bytes += sizeof(struct leaf_info) * stat->prefixes; +@@ -2109,7 +2070,7 @@ static void trie_show_stats(struct seq_f + seq_putc(seq, '\n'); + seq_printf(seq, "\tPointers: %u\n", pointers); + +- bytes += sizeof(struct rt_trie_node *) * pointers; ++ bytes += sizeof(struct tnode *) * pointers; + seq_printf(seq, "Null ptrs: %u\n", stat->nullpointers); + seq_printf(seq, "Total size: %u kB\n", (bytes + 1023) / 1024); + } +@@ -2163,7 +2124,7 @@ static int fib_triestat_seq_show(struct + seq_printf(seq, + "Basic info: size of leaf:" + " %Zd bytes, size of tnode: %Zd bytes.\n", +- sizeof(struct leaf), sizeof(struct tnode)); ++ sizeof(struct tnode), sizeof(struct tnode)); + + for (h = 0; h < FIB_TABLE_HASHSZ; h++) { + struct hlist_head *head = &net->ipv4.fib_table_hash[h]; +@@ -2202,7 +2163,7 @@ static const struct file_operations fib_ + .release = single_release_net, + }; + +-static struct rt_trie_node *fib_trie_get_idx(struct seq_file *seq, loff_t pos) ++static struct tnode *fib_trie_get_idx(struct seq_file *seq, loff_t pos) + { + struct fib_trie_iter *iter = seq->private; + struct net *net = seq_file_net(seq); +@@ -2214,7 +2175,7 @@ static struct rt_trie_node *fib_trie_get + struct fib_table *tb; + + hlist_for_each_entry_rcu(tb, head, tb_hlist) { +- struct rt_trie_node *n; ++ struct tnode *n; + + for (n = fib_trie_get_first(iter, + (struct trie *) tb->tb_data); +@@ -2243,7 +2204,7 @@ static void *fib_trie_seq_next(struct se + struct fib_table *tb = iter->tb; + struct hlist_node *tb_node; + unsigned int h; +- struct rt_trie_node *n; ++ struct tnode *n; + + ++*pos; + /* next node in same table */ +@@ -2329,29 +2290,26 @@ static inline const char *rtn_type(char + static int fib_trie_seq_show(struct seq_file *seq, void *v) + { + const struct fib_trie_iter *iter = seq->private; +- struct rt_trie_node *n = v; ++ struct tnode *n = v; + + if (!node_parent_rcu(n)) + fib_table_print(seq, iter->tb); + + if (IS_TNODE(n)) { +- struct tnode *tn = (struct tnode *) n; +- __be32 prf = htonl(tn->key); ++ __be32 prf = htonl(n->key); + +- seq_indent(seq, iter->depth-1); ++ seq_indent(seq, iter->depth - 1); + seq_printf(seq, " +-- %pI4/%d %d %d %d\n", +- &prf, tn->pos, tn->bits, tn->full_children, +- tn->empty_children); +- ++ &prf, n->pos, n->bits, n->full_children, ++ n->empty_children); + } else { +- struct leaf *l = (struct leaf *) n; + struct leaf_info *li; +- __be32 val = htonl(l->key); ++ __be32 val = htonl(n->key); + + seq_indent(seq, iter->depth); + seq_printf(seq, " |-- %pI4\n", &val); + +- hlist_for_each_entry_rcu(li, &l->list, hlist) { ++ hlist_for_each_entry_rcu(li, &n->list, hlist) { + struct fib_alias *fa; + + list_for_each_entry_rcu(fa, &li->falh, fa_list) { +@@ -2401,9 +2359,9 @@ struct fib_route_iter { + t_key key; + }; + +-static struct leaf *fib_route_get_idx(struct fib_route_iter *iter, loff_t pos) ++static struct tnode *fib_route_get_idx(struct fib_route_iter *iter, loff_t pos) + { +- struct leaf *l = NULL; ++ struct tnode *l = NULL; + struct trie *t = iter->main_trie; + + /* use cache location of last found key */ +@@ -2448,7 +2406,7 @@ static void *fib_route_seq_start(struct + static void *fib_route_seq_next(struct seq_file *seq, void *v, loff_t *pos) + { + struct fib_route_iter *iter = seq->private; +- struct leaf *l = v; ++ struct tnode *l = v; + + ++*pos; + if (v == SEQ_START_TOKEN) { +@@ -2494,7 +2452,7 @@ static unsigned int fib_flag_trans(int t + */ + static int fib_route_seq_show(struct seq_file *seq, void *v) + { +- struct leaf *l = v; ++ struct tnode *l = v; + struct leaf_info *li; + + if (v == SEQ_START_TOKEN) { |