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Date: Thu, 05 Mar 2015 14:50:41 -0800
From: Alexander Duyck <alexander.h.duyck@...hat.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net
Subject: [net-next PATCH 2/9] fib_trie: Rename tnode to key_vector
Rename the tnode to key_vector. The key_vector will be the eventual
container for all of the information needed by either a leaf or a tnode.
The final result should be much smaller than the 40 bytes currently needed
for either one.
This also updates the trie struct so that it contains an array of size 1 of
tnode pointers. This is to bring the structure more inline with how an
actual tnode itself is configured.
Signed-off-by: Alexander Duyck <alexander.h.duyck@...hat.com>
---
net/ipv4/fib_trie.c | 243 ++++++++++++++++++++++++++-------------------------
1 file changed, 126 insertions(+), 117 deletions(-)
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 7e96529..e8a99c6 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -93,12 +93,12 @@ typedef unsigned int t_key;
#define get_index(_key, _kv) (((_key) ^ (_kv)->key) >> (_kv)->pos)
-struct tnode {
+struct key_vector {
struct rcu_head rcu;
t_key empty_children; /* KEYLENGTH bits needed */
t_key full_children; /* KEYLENGTH bits needed */
- struct tnode __rcu *parent;
+ struct key_vector __rcu *parent;
t_key key;
unsigned char pos; /* 2log(KEYLENGTH) bits needed */
@@ -108,11 +108,11 @@ struct tnode {
/* This list pointer if valid if (pos | bits) == 0 (LEAF) */
struct hlist_head leaf;
/* This array is valid if (pos | bits) > 0 (TNODE) */
- struct tnode __rcu *tnode[0];
+ struct key_vector __rcu *tnode[0];
};
};
-#define TNODE_SIZE(n) offsetof(struct tnode, tnode[n])
+#define TNODE_SIZE(n) offsetof(struct key_vector, tnode[n])
#define LEAF_SIZE TNODE_SIZE(1)
#ifdef CONFIG_IP_FIB_TRIE_STATS
@@ -137,13 +137,13 @@ struct trie_stat {
};
struct trie {
- struct tnode __rcu *trie;
+ struct key_vector __rcu *tnode[1];
#ifdef CONFIG_IP_FIB_TRIE_STATS
struct trie_use_stats __percpu *stats;
#endif
};
-static struct tnode **resize(struct trie *t, struct tnode *tn);
+static struct key_vector **resize(struct trie *t, struct key_vector *tn);
static size_t tnode_free_size;
/*
@@ -163,7 +163,7 @@ static struct kmem_cache *trie_leaf_kmem __read_mostly;
#define node_parent_rcu(n) rcu_dereference_rtnl((n)->parent)
/* wrapper for rcu_assign_pointer */
-static inline void node_set_parent(struct tnode *n, struct tnode *tp)
+static inline void node_set_parent(struct key_vector *n, struct key_vector *tp)
{
if (n)
rcu_assign_pointer(n->parent, tp);
@@ -174,21 +174,21 @@ static inline void node_set_parent(struct tnode *n, struct tnode *tp)
/* This provides us with the number of children in this node, in the case of a
* leaf this will return 0 meaning none of the children are accessible.
*/
-static inline unsigned long tnode_child_length(const struct tnode *tn)
+static inline unsigned long tnode_child_length(const struct key_vector *tn)
{
return (1ul << tn->bits) & ~(1ul);
}
/* caller must hold RTNL */
-static inline struct tnode *tnode_get_child(const struct tnode *tn,
- unsigned long i)
+static inline struct key_vector *tnode_get_child(struct key_vector *tn,
+ unsigned long i)
{
return rtnl_dereference(tn->tnode[i]);
}
/* caller must hold RCU read lock or RTNL */
-static inline struct tnode *tnode_get_child_rcu(const struct tnode *tn,
- unsigned long i)
+static inline struct key_vector *tnode_get_child_rcu(struct key_vector *tn,
+ unsigned long i)
{
return rcu_dereference_rtnl(tn->tnode[i]);
}
@@ -276,13 +276,13 @@ static inline void alias_free_mem_rcu(struct fib_alias *fa)
}
#define TNODE_KMALLOC_MAX \
- ilog2((PAGE_SIZE - TNODE_SIZE(0)) / sizeof(struct tnode *))
+ ilog2((PAGE_SIZE - TNODE_SIZE(0)) / sizeof(struct key_vector *))
#define TNODE_VMALLOC_MAX \
- ilog2((SIZE_MAX - TNODE_SIZE(0)) / sizeof(struct tnode *))
+ ilog2((SIZE_MAX - TNODE_SIZE(0)) / sizeof(struct key_vector *))
static void __node_free_rcu(struct rcu_head *head)
{
- struct tnode *n = container_of(head, struct tnode, rcu);
+ struct key_vector *n = container_of(head, struct key_vector, rcu);
if (IS_LEAF(n))
kmem_cache_free(trie_leaf_kmem, n);
@@ -294,7 +294,7 @@ static void __node_free_rcu(struct rcu_head *head)
#define node_free(n) call_rcu(&n->rcu, __node_free_rcu)
-static struct tnode *tnode_alloc(int bits)
+static struct key_vector *tnode_alloc(int bits)
{
size_t size;
@@ -311,19 +311,19 @@ static struct tnode *tnode_alloc(int bits)
return vzalloc(size);
}
-static inline void empty_child_inc(struct tnode *n)
+static inline void empty_child_inc(struct key_vector *n)
{
++n->empty_children ? : ++n->full_children;
}
-static inline void empty_child_dec(struct tnode *n)
+static inline void empty_child_dec(struct key_vector *n)
{
n->empty_children-- ? : n->full_children--;
}
-static struct tnode *leaf_new(t_key key, struct fib_alias *fa)
+static struct key_vector *leaf_new(t_key key, struct fib_alias *fa)
{
- struct tnode *l = kmem_cache_alloc(trie_leaf_kmem, GFP_KERNEL);
+ struct key_vector *l = kmem_cache_alloc(trie_leaf_kmem, GFP_KERNEL);
if (l) {
l->parent = NULL;
/* set key and pos to reflect full key value
@@ -343,9 +343,9 @@ static struct tnode *leaf_new(t_key key, struct fib_alias *fa)
return l;
}
-static struct tnode *tnode_new(t_key key, int pos, int bits)
+static struct key_vector *tnode_new(t_key key, int pos, int bits)
{
- struct tnode *tn = tnode_alloc(bits);
+ struct key_vector *tn = tnode_alloc(bits);
unsigned int shift = pos + bits;
/* verify bits and pos their msb bits clear and values are valid */
@@ -364,14 +364,14 @@ static struct tnode *tnode_new(t_key key, int pos, int bits)
}
pr_debug("AT %p s=%zu %zu\n", tn, TNODE_SIZE(0),
- sizeof(struct tnode *) << bits);
+ sizeof(struct key_vector *) << bits);
return tn;
}
/* Check whether a tnode 'n' is "full", i.e. it is an internal node
* and no bits are skipped. See discussion in dyntree paper p. 6
*/
-static inline int tnode_full(const struct tnode *tn, const struct tnode *n)
+static inline int tnode_full(struct key_vector *tn, struct key_vector *n)
{
return n && ((n->pos + n->bits) == tn->pos) && IS_TNODE(n);
}
@@ -379,9 +379,10 @@ static inline int tnode_full(const struct tnode *tn, const struct tnode *n)
/* Add a child at position i overwriting the old value.
* Update the value of full_children and empty_children.
*/
-static void put_child(struct tnode *tn, unsigned long i, struct tnode *n)
+static void put_child(struct key_vector *tn, unsigned long i,
+ struct key_vector *n)
{
- struct tnode *chi = tnode_get_child(tn, i);
+ struct key_vector *chi = tnode_get_child(tn, i);
int isfull, wasfull;
BUG_ON(i >= tnode_child_length(tn));
@@ -407,13 +408,13 @@ static void put_child(struct tnode *tn, unsigned long i, struct tnode *n)
rcu_assign_pointer(tn->tnode[i], n);
}
-static void update_children(struct tnode *tn)
+static void update_children(struct key_vector *tn)
{
unsigned long i;
/* update all of the child parent pointers */
for (i = tnode_child_length(tn); i;) {
- struct tnode *inode = tnode_get_child(tn, --i);
+ struct key_vector *inode = tnode_get_child(tn, --i);
if (!inode)
continue;
@@ -429,27 +430,28 @@ static void update_children(struct tnode *tn)
}
}
-static inline void put_child_root(struct tnode *tp, struct trie *t,
- t_key key, struct tnode *n)
+static inline void put_child_root(struct key_vector *tp, struct trie *t,
+ t_key key, struct key_vector *n)
{
if (tp)
put_child(tp, get_index(key, tp), n);
else
- rcu_assign_pointer(t->trie, n);
+ rcu_assign_pointer(t->tnode[0], n);
}
-static inline void tnode_free_init(struct tnode *tn)
+static inline void tnode_free_init(struct key_vector *tn)
{
tn->rcu.next = NULL;
}
-static inline void tnode_free_append(struct tnode *tn, struct tnode *n)
+static inline void tnode_free_append(struct key_vector *tn,
+ struct key_vector *n)
{
n->rcu.next = tn->rcu.next;
tn->rcu.next = &n->rcu;
}
-static void tnode_free(struct tnode *tn)
+static void tnode_free(struct key_vector *tn)
{
struct callback_head *head = &tn->rcu;
@@ -458,7 +460,7 @@ static void tnode_free(struct tnode *tn)
tnode_free_size += TNODE_SIZE(1ul << tn->bits);
node_free(tn);
- tn = container_of(head, struct tnode, rcu);
+ tn = container_of(head, struct key_vector, rcu);
}
if (tnode_free_size >= PAGE_SIZE * sync_pages) {
@@ -467,11 +469,12 @@ static void tnode_free(struct tnode *tn)
}
}
-static struct tnode __rcu **replace(struct trie *t, struct tnode *oldtnode,
- struct tnode *tn)
+static struct key_vector __rcu **replace(struct trie *t,
+ struct key_vector *oldtnode,
+ struct key_vector *tn)
{
- struct tnode *tp = node_parent(oldtnode);
- struct tnode **cptr;
+ struct key_vector *tp = node_parent(oldtnode);
+ struct key_vector **cptr;
unsigned long i;
/* setup the parent pointer out of and back into this node */
@@ -485,11 +488,11 @@ static struct tnode __rcu **replace(struct trie *t, struct tnode *oldtnode,
tnode_free(oldtnode);
/* record the pointer that is pointing to this node */
- cptr = tp ? tp->tnode : &t->trie;
+ cptr = tp ? tp->tnode : t->tnode;
/* resize children now that oldtnode is freed */
for (i = tnode_child_length(tn); i;) {
- struct tnode *inode = tnode_get_child(tn, --i);
+ struct key_vector *inode = tnode_get_child(tn, --i);
/* resize child node */
if (tnode_full(tn, inode))
@@ -499,9 +502,10 @@ static struct tnode __rcu **replace(struct trie *t, struct tnode *oldtnode,
return cptr;
}
-static struct tnode __rcu **inflate(struct trie *t, struct tnode *oldtnode)
+static struct key_vector __rcu **inflate(struct trie *t,
+ struct key_vector *oldtnode)
{
- struct tnode *tn;
+ struct key_vector *tn;
unsigned long i;
t_key m;
@@ -520,8 +524,8 @@ static struct tnode __rcu **inflate(struct trie *t, struct tnode *oldtnode)
* nodes.
*/
for (i = tnode_child_length(oldtnode), m = 1u << tn->pos; i;) {
- struct tnode *inode = tnode_get_child(oldtnode, --i);
- struct tnode *node0, *node1;
+ struct key_vector *inode = tnode_get_child(oldtnode, --i);
+ struct key_vector *node0, *node1;
unsigned long j, k;
/* An empty child */
@@ -594,9 +598,10 @@ notnode:
return NULL;
}
-static struct tnode __rcu **halve(struct trie *t, struct tnode *oldtnode)
+static struct key_vector __rcu **halve(struct trie *t,
+ struct key_vector *oldtnode)
{
- struct tnode *tn;
+ struct key_vector *tn;
unsigned long i;
pr_debug("In halve\n");
@@ -614,9 +619,9 @@ static struct tnode __rcu **halve(struct trie *t, struct tnode *oldtnode)
* nodes.
*/
for (i = tnode_child_length(oldtnode); i;) {
- struct tnode *node1 = tnode_get_child(oldtnode, --i);
- struct tnode *node0 = tnode_get_child(oldtnode, --i);
- struct tnode *inode;
+ struct key_vector *node1 = tnode_get_child(oldtnode, --i);
+ struct key_vector *node0 = tnode_get_child(oldtnode, --i);
+ struct key_vector *inode;
/* At least one of the children is empty */
if (!node1 || !node0) {
@@ -648,9 +653,9 @@ notnode:
return NULL;
}
-static void collapse(struct trie *t, struct tnode *oldtnode)
+static void collapse(struct trie *t, struct key_vector *oldtnode)
{
- struct tnode *n, *tp;
+ struct key_vector *n, *tp;
unsigned long i;
/* scan the tnode looking for that one child that might still exist */
@@ -666,7 +671,7 @@ static void collapse(struct trie *t, struct tnode *oldtnode)
node_free(oldtnode);
}
-static unsigned char update_suffix(struct tnode *tn)
+static unsigned char update_suffix(struct key_vector *tn)
{
unsigned char slen = tn->pos;
unsigned long stride, i;
@@ -677,7 +682,7 @@ static unsigned char update_suffix(struct tnode *tn)
* represent the nodes with suffix length equal to tn->pos
*/
for (i = 0, stride = 0x2ul ; i < tnode_child_length(tn); i += stride) {
- struct tnode *n = tnode_get_child(tn, i);
+ struct key_vector *n = tnode_get_child(tn, i);
if (!n || (n->slen <= slen))
continue;
@@ -758,7 +763,7 @@ static unsigned char update_suffix(struct tnode *tn)
* tnode_child_length(tn)
*
*/
-static bool should_inflate(const struct tnode *tp, const struct tnode *tn)
+static inline bool should_inflate(struct key_vector *tp, struct key_vector *tn)
{
unsigned long used = tnode_child_length(tn);
unsigned long threshold = used;
@@ -773,7 +778,7 @@ static bool should_inflate(const struct tnode *tp, const struct tnode *tn)
return (used > 1) && tn->pos && ((50 * used) >= threshold);
}
-static bool should_halve(const struct tnode *tp, const struct tnode *tn)
+static inline bool should_halve(struct key_vector *tp, struct key_vector *tn)
{
unsigned long used = tnode_child_length(tn);
unsigned long threshold = used;
@@ -787,7 +792,7 @@ static bool should_halve(const struct tnode *tp, const struct tnode *tn)
return (used > 1) && (tn->bits > 1) && ((100 * used) < threshold);
}
-static bool should_collapse(const struct tnode *tn)
+static inline bool should_collapse(struct key_vector *tn)
{
unsigned long used = tnode_child_length(tn);
@@ -802,14 +807,15 @@ static bool should_collapse(const struct tnode *tn)
}
#define MAX_WORK 10
-static struct tnode __rcu **resize(struct trie *t, struct tnode *tn)
+static struct key_vector __rcu **resize(struct trie *t,
+ struct key_vector *tn)
{
#ifdef CONFIG_IP_FIB_TRIE_STATS
struct trie_use_stats __percpu *stats = t->stats;
#endif
- struct tnode *tp = node_parent(tn);
+ struct key_vector *tp = node_parent(tn);
unsigned long cindex = tp ? get_index(tn->key, tp) : 0;
- struct tnode __rcu **cptr = tp ? tp->tnode : &t->trie;
+ struct key_vector __rcu **cptr = tp ? tp->tnode : t->tnode;
int max_work = MAX_WORK;
pr_debug("In tnode_resize %p inflate_threshold=%d threshold=%d\n",
@@ -825,7 +831,7 @@ static struct tnode __rcu **resize(struct trie *t, struct tnode *tn)
* nonempty nodes that are above the threshold.
*/
while (should_inflate(tp, tn) && max_work) {
- struct tnode __rcu **tcptr = inflate(t, tn);
+ struct key_vector __rcu **tcptr = inflate(t, tn);
if (!tcptr) {
#ifdef CONFIG_IP_FIB_TRIE_STATS
@@ -847,7 +853,7 @@ static struct tnode __rcu **resize(struct trie *t, struct tnode *tn)
* node is above threshold.
*/
while (should_halve(tp, tn) && max_work) {
- struct tnode __rcu **tcptr = halve(t, tn);
+ struct key_vector __rcu **tcptr = halve(t, tn);
if (!tcptr) {
#ifdef CONFIG_IP_FIB_TRIE_STATS
@@ -882,7 +888,7 @@ static struct tnode __rcu **resize(struct trie *t, struct tnode *tn)
return cptr;
}
-static void leaf_pull_suffix(struct tnode *tp, struct tnode *l)
+static void leaf_pull_suffix(struct key_vector *tp, struct key_vector *l)
{
while (tp && (tp->slen > tp->pos) && (tp->slen > l->slen)) {
if (update_suffix(tp) > l->slen)
@@ -891,7 +897,7 @@ static void leaf_pull_suffix(struct tnode *tp, struct tnode *l)
}
}
-static void leaf_push_suffix(struct tnode *tn, struct tnode *l)
+static void leaf_push_suffix(struct key_vector *tn, struct key_vector *l)
{
/* if this is a new leaf then tn will be NULL and we can sort
* out parent suffix lengths as a part of trie_rebalance
@@ -903,9 +909,10 @@ static void leaf_push_suffix(struct tnode *tn, struct tnode *l)
}
/* rcu_read_lock needs to be hold by caller from readside */
-static struct tnode *fib_find_node(struct trie *t, struct tnode **tn, u32 key)
+static struct key_vector *fib_find_node(struct trie *t,
+ struct key_vector **tp, u32 key)
{
- struct tnode *pn = NULL, *n = rcu_dereference_rtnl(t->trie);
+ struct key_vector *pn = NULL, *n = rcu_dereference_rtnl(t->tnode[0]);
while (n) {
unsigned long index = get_index(key, n);
@@ -937,7 +944,7 @@ static struct tnode *fib_find_node(struct trie *t, struct tnode **tn, u32 key)
n = tnode_get_child_rcu(n, index);
}
- *tn = pn;
+ *tp = pn;
return n;
}
@@ -967,24 +974,24 @@ static struct fib_alias *fib_find_alias(struct hlist_head *fah, u8 slen,
return NULL;
}
-static void trie_rebalance(struct trie *t, struct tnode *tn)
+static void trie_rebalance(struct trie *t, struct key_vector *tn)
{
- struct tnode __rcu **cptr = &t->trie;
+ struct key_vector __rcu **cptr = t->tnode;
while (tn) {
- struct tnode *tp = node_parent(tn);
+ struct key_vector *tp = node_parent(tn);
cptr = resize(t, tn);
if (!tp)
break;
- tn = container_of(cptr, struct tnode, tnode[0]);
+ tn = container_of(cptr, struct key_vector, tnode[0]);
}
}
-static int fib_insert_node(struct trie *t, struct tnode *tp,
+static int fib_insert_node(struct trie *t, struct key_vector *tp,
struct fib_alias *new, t_key key)
{
- struct tnode *n, *l;
+ struct key_vector *n, *l;
l = leaf_new(key, new);
if (!l)
@@ -994,7 +1001,7 @@ static int fib_insert_node(struct trie *t, struct tnode *tp,
if (tp)
n = tnode_get_child(tp, get_index(key, tp));
else
- n = rcu_dereference_rtnl(t->trie);
+ n = rcu_dereference_rtnl(t->tnode[0]);
/* Case 2: n is a LEAF or a TNODE and the key doesn't match.
*
@@ -1003,7 +1010,7 @@ static int fib_insert_node(struct trie *t, struct tnode *tp,
* leaves us in position for handling as case 3
*/
if (n) {
- struct tnode *tn;
+ struct key_vector *tn;
tn = tnode_new(key, __fls(key ^ n->key), 1);
if (!tn)
@@ -1033,8 +1040,8 @@ noleaf:
return -ENOMEM;
}
-static int fib_insert_alias(struct trie *t, struct tnode *tp,
- struct tnode *l, struct fib_alias *new,
+static int fib_insert_alias(struct trie *t, struct key_vector *tp,
+ struct key_vector *l, struct fib_alias *new,
struct fib_alias *fa, t_key key)
{
if (!l)
@@ -1071,7 +1078,7 @@ int fib_table_insert(struct fib_table *tb, struct fib_config *cfg)
{
struct trie *t = (struct trie *)tb->tb_data;
struct fib_alias *fa, *new_fa;
- struct tnode *l, *tp;
+ struct key_vector *l, *tp;
struct fib_info *fi;
u8 plen = cfg->fc_dst_len;
u8 slen = KEYLENGTH - plen;
@@ -1215,7 +1222,7 @@ err:
return err;
}
-static inline t_key prefix_mismatch(t_key key, struct tnode *n)
+static inline t_key prefix_mismatch(t_key key, struct key_vector *n)
{
t_key prefix = n->key;
@@ -1231,12 +1238,12 @@ int fib_table_lookup(struct fib_table *tb, const struct flowi4 *flp,
struct trie_use_stats __percpu *stats = t->stats;
#endif
const t_key key = ntohl(flp->daddr);
- struct tnode *n, *pn;
+ struct key_vector *n, *pn;
struct fib_alias *fa;
unsigned long index;
t_key cindex;
- n = rcu_dereference(t->trie);
+ n = rcu_dereference(t->tnode[0]);
if (!n)
return -EAGAIN;
@@ -1288,7 +1295,7 @@ int fib_table_lookup(struct fib_table *tb, const struct flowi4 *flp,
/* Step 2: Sort out leaves and begin backtracing for longest prefix */
for (;;) {
/* record the pointer where our next node pointer is stored */
- struct tnode __rcu **cptr = n->tnode;
+ struct key_vector __rcu **cptr = n->tnode;
/* This test verifies that none of the bits that differ
* between the key and the prefix exist in the region of
@@ -1397,8 +1404,8 @@ found:
}
EXPORT_SYMBOL_GPL(fib_table_lookup);
-static void fib_remove_alias(struct trie *t, struct tnode *tp,
- struct tnode *l, struct fib_alias *old)
+static void fib_remove_alias(struct trie *t, struct key_vector *tp,
+ struct key_vector *l, struct fib_alias *old)
{
/* record the location of the previous list_info entry */
struct hlist_node **pprev = old->fa_list.pprev;
@@ -1431,7 +1438,7 @@ int fib_table_delete(struct fib_table *tb, struct fib_config *cfg)
{
struct trie *t = (struct trie *) tb->tb_data;
struct fib_alias *fa, *fa_to_delete;
- struct tnode *l, *tp;
+ struct key_vector *l, *tp;
u8 plen = cfg->fc_dst_len;
u8 slen = KEYLENGTH - plen;
u8 tos = cfg->fc_tos;
@@ -1495,9 +1502,9 @@ int fib_table_delete(struct fib_table *tb, struct fib_config *cfg)
}
/* Scan for the next leaf starting at the provided key value */
-static struct tnode *leaf_walk_rcu(struct tnode **tn, t_key key)
+static struct key_vector *leaf_walk_rcu(struct key_vector **tn, t_key key)
{
- struct tnode *pn, *n = *tn;
+ struct key_vector *pn, *n = *tn;
unsigned long cindex;
/* record parent node for backtracing */
@@ -1562,14 +1569,14 @@ found:
int fib_table_flush(struct fib_table *tb)
{
struct trie *t = (struct trie *)tb->tb_data;
+ struct key_vector *n, *pn;
struct hlist_node *tmp;
struct fib_alias *fa;
- struct tnode *n, *pn;
unsigned long cindex;
unsigned char slen;
int found = 0;
- n = rcu_dereference(t->trie);
+ n = rcu_dereference(t->tnode[0]);
if (!n)
goto flush_complete;
@@ -1584,7 +1591,7 @@ backtrace:
/* walk trie in reverse order */
do {
while (!(cindex--)) {
- struct tnode __rcu **cptr;
+ struct key_vector __rcu **cptr;
t_key pkey = pn->key;
n = pn;
@@ -1597,7 +1604,8 @@ backtrace:
if (!pn)
goto flush_complete;
- pn = container_of(cptr, struct tnode, tnode[0]);
+ pn = container_of(cptr, struct key_vector,
+ tnode[0]);
cindex = get_index(pkey, pn);
}
@@ -1658,7 +1666,7 @@ void fib_free_table(struct fib_table *tb)
call_rcu(&tb->rcu, __trie_free_rcu);
}
-static int fn_trie_dump_leaf(struct tnode *l, struct fib_table *tb,
+static int fn_trie_dump_leaf(struct key_vector *l, struct fib_table *tb,
struct sk_buff *skb, struct netlink_callback *cb)
{
__be32 xkey = htonl(l->key);
@@ -1699,14 +1707,14 @@ int fib_table_dump(struct fib_table *tb, struct sk_buff *skb,
struct netlink_callback *cb)
{
struct trie *t = (struct trie *)tb->tb_data;
- struct tnode *l, *tp;
+ struct key_vector *l, *tp;
/* Dump starting at last key.
* Note: 0.0.0.0/0 (ie default) is first key.
*/
int count = cb->args[2];
t_key key = cb->args[3];
- tp = rcu_dereference_rtnl(t->trie);
+ tp = rcu_dereference_rtnl(t->tnode[0]);
while ((l = leaf_walk_rcu(&tp, key)) != NULL) {
if (fn_trie_dump_leaf(l, tb, skb, cb) < 0) {
@@ -1759,7 +1767,7 @@ struct fib_table *fib_trie_table(u32 id)
tb->tb_num_default = 0;
t = (struct trie *) tb->tb_data;
- RCU_INIT_POINTER(t->trie, NULL);
+ RCU_INIT_POINTER(t->tnode[0], NULL);
#ifdef CONFIG_IP_FIB_TRIE_STATS
t->stats = alloc_percpu(struct trie_use_stats);
if (!t->stats) {
@@ -1776,16 +1784,16 @@ struct fib_table *fib_trie_table(u32 id)
struct fib_trie_iter {
struct seq_net_private p;
struct fib_table *tb;
- struct tnode *tnode;
+ struct key_vector *tnode;
unsigned int index;
unsigned int depth;
};
-static struct tnode *fib_trie_get_next(struct fib_trie_iter *iter)
+static struct key_vector *fib_trie_get_next(struct fib_trie_iter *iter)
{
unsigned long cindex = iter->index;
- struct tnode *tn = iter->tnode;
- struct tnode *p;
+ struct key_vector *tn = iter->tnode;
+ struct key_vector *p;
/* A single entry routing table */
if (!tn)
@@ -1795,7 +1803,7 @@ static struct tnode *fib_trie_get_next(struct fib_trie_iter *iter)
iter->tnode, iter->index, iter->depth);
rescan:
while (cindex < tnode_child_length(tn)) {
- struct tnode *n = tnode_get_child_rcu(tn, cindex);
+ struct key_vector *n = tnode_get_child_rcu(tn, cindex);
if (n) {
if (IS_LEAF(n)) {
@@ -1826,15 +1834,15 @@ rescan:
return NULL;
}
-static struct tnode *fib_trie_get_first(struct fib_trie_iter *iter,
- struct trie *t)
+static struct key_vector *fib_trie_get_first(struct fib_trie_iter *iter,
+ struct trie *t)
{
- struct tnode *n;
+ struct key_vector *n;
if (!t)
return NULL;
- n = rcu_dereference(t->trie);
+ n = rcu_dereference(t->tnode[0]);
if (!n)
return NULL;
@@ -1853,7 +1861,7 @@ static struct tnode *fib_trie_get_first(struct fib_trie_iter *iter,
static void trie_collect_stats(struct trie *t, struct trie_stat *s)
{
- struct tnode *n;
+ struct key_vector *n;
struct fib_trie_iter iter;
memset(s, 0, sizeof(*s));
@@ -1918,7 +1926,7 @@ static void trie_show_stats(struct seq_file *seq, struct trie_stat *stat)
seq_putc(seq, '\n');
seq_printf(seq, "\tPointers: %u\n", pointers);
- bytes += sizeof(struct tnode *) * pointers;
+ bytes += sizeof(struct key_vector *) * pointers;
seq_printf(seq, "Null ptrs: %u\n", stat->nullpointers);
seq_printf(seq, "Total size: %u kB\n", (bytes + 1023) / 1024);
}
@@ -2011,7 +2019,7 @@ static const struct file_operations fib_triestat_fops = {
.release = single_release_net,
};
-static struct tnode *fib_trie_get_idx(struct seq_file *seq, loff_t pos)
+static struct key_vector *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);
@@ -2023,7 +2031,7 @@ static struct tnode *fib_trie_get_idx(struct seq_file *seq, loff_t pos)
struct fib_table *tb;
hlist_for_each_entry_rcu(tb, head, tb_hlist) {
- struct tnode *n;
+ struct key_vector *n;
for (n = fib_trie_get_first(iter,
(struct trie *) tb->tb_data);
@@ -2052,7 +2060,7 @@ static void *fib_trie_seq_next(struct seq_file *seq, void *v, loff_t *pos)
struct fib_table *tb = iter->tb;
struct hlist_node *tb_node;
unsigned int h;
- struct tnode *n;
+ struct key_vector *n;
++*pos;
/* next node in same table */
@@ -2138,7 +2146,7 @@ static inline const char *rtn_type(char *buf, size_t len, unsigned int t)
static int fib_trie_seq_show(struct seq_file *seq, void *v)
{
const struct fib_trie_iter *iter = seq->private;
- struct tnode *n = v;
+ struct key_vector *n = v;
if (!node_parent_rcu(n))
fib_table_print(seq, iter->tb);
@@ -2200,15 +2208,16 @@ static const struct file_operations fib_trie_fops = {
struct fib_route_iter {
struct seq_net_private p;
struct fib_table *main_tb;
- struct tnode *tnode;
+ struct key_vector *tnode;
loff_t pos;
t_key key;
};
-static struct tnode *fib_route_get_idx(struct fib_route_iter *iter, loff_t pos)
+static struct key_vector *fib_route_get_idx(struct fib_route_iter *iter,
+ loff_t pos)
{
struct fib_table *tb = iter->main_tb;
- struct tnode *l, **tp = &iter->tnode;
+ struct key_vector *l, **tp = &iter->tnode;
struct trie *t;
t_key key;
@@ -2218,7 +2227,7 @@ static struct tnode *fib_route_get_idx(struct fib_route_iter *iter, loff_t pos)
key = iter->key;
} else {
t = (struct trie *)tb->tb_data;
- iter->tnode = rcu_dereference_rtnl(t->trie);
+ iter->tnode = rcu_dereference_rtnl(t->tnode[0]);
iter->pos = 0;
key = 0;
}
@@ -2264,7 +2273,7 @@ static void *fib_route_seq_start(struct seq_file *seq, loff_t *pos)
return fib_route_get_idx(iter, *pos);
t = (struct trie *)tb->tb_data;
- iter->tnode = rcu_dereference_rtnl(t->trie);
+ iter->tnode = rcu_dereference_rtnl(t->tnode[0]);
iter->pos = 0;
iter->key = 0;
@@ -2274,7 +2283,7 @@ static void *fib_route_seq_start(struct seq_file *seq, loff_t *pos)
static void *fib_route_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct fib_route_iter *iter = seq->private;
- struct tnode *l = NULL;
+ struct key_vector *l = NULL;
t_key key = iter->key;
++*pos;
@@ -2322,7 +2331,7 @@ static unsigned int fib_flag_trans(int type, __be32 mask, const struct fib_info
static int fib_route_seq_show(struct seq_file *seq, void *v)
{
struct fib_alias *fa;
- struct tnode *l = v;
+ struct key_vector *l = v;
__be32 prefix;
if (v == SEQ_START_TOKEN) {
--
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