diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/fib_trie.c | 23 | ||||
| -rw-r--r-- | net/ipv6/udp.c | 4 |
2 files changed, 24 insertions, 3 deletions
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index 50c0519cd70..0093ea08c7f 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -286,6 +286,8 @@ static inline void check_tnode(const struct tnode *tn) static int halve_threshold = 25; static int inflate_threshold = 50; +static int halve_threshold_root = 15; +static int inflate_threshold_root = 25; static void __alias_free_mem(struct rcu_head *head) @@ -449,6 +451,8 @@ static struct node *resize(struct trie *t, struct tnode *tn) int i; int err = 0; struct tnode *old_tn; + int inflate_threshold_use; + int halve_threshold_use; if (!tn) return NULL; @@ -541,10 +545,17 @@ static struct node *resize(struct trie *t, struct tnode *tn) check_tnode(tn); + /* Keep root node larger */ + + if(!tn->parent) + inflate_threshold_use = inflate_threshold_root; + else + inflate_threshold_use = inflate_threshold; + err = 0; while ((tn->full_children > 0 && 50 * (tn->full_children + tnode_child_length(tn) - tn->empty_children) >= - inflate_threshold * tnode_child_length(tn))) { + inflate_threshold_use * tnode_child_length(tn))) { old_tn = tn; tn = inflate(t, tn); @@ -564,10 +575,18 @@ static struct node *resize(struct trie *t, struct tnode *tn) * node is above threshold. */ + + /* Keep root node larger */ + + if(!tn->parent) + halve_threshold_use = halve_threshold_root; + else + halve_threshold_use = halve_threshold; + err = 0; while (tn->bits > 1 && 100 * (tnode_child_length(tn) - tn->empty_children) < - halve_threshold * tnode_child_length(tn)) { + halve_threshold_use * tnode_child_length(tn)) { old_tn = tn; tn = halve(t, tn); diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index e4cad11f284..bf9519341fd 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -99,7 +99,7 @@ static int udp_v6_get_port(struct sock *sk, unsigned short snum) next:; } result = best; - for(;; result += UDP_HTABLE_SIZE) { + for(i = 0; i < (1 << 16) / UDP_HTABLE_SIZE; i++, result += UDP_HTABLE_SIZE) { if (result > sysctl_local_port_range[1]) result = sysctl_local_port_range[0] + ((result - sysctl_local_port_range[0]) & @@ -107,6 +107,8 @@ static int udp_v6_get_port(struct sock *sk, unsigned short snum) if (!udp_lport_inuse(result)) break; } + if (i >= (1 << 16) / UDP_HTABLE_SIZE) + goto fail; gotit: udp_port_rover = snum = result; } else { |