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openvswitch: Rename key_len to key_end

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Key_end is a better name describing the ending boundary than key_len.
Rename those variables to make it less confusing.

Signed-off-by: Andy Zhou <azhou@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
This commit is contained in:
Andy Zhou 2013-08-22 12:12:57 -07:00 committed by Jesse Gross
parent a175a72330
commit 02237373b1
2 changed files with 17 additions and 16 deletions
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31
net/openvswitch/flow.c
View File

@ -997,10 +997,11 @@ int ovs_flow_extract(struct sk_buff *skb, u16 in_port, struct sw_flow_key *key)
return 0;
}
static u32 ovs_flow_hash(const struct sw_flow_key *key, int key_start, int key_len)
static u32 ovs_flow_hash(const struct sw_flow_key *key, int key_start,
int key_end)
{
return jhash2((u32 *)((u8 *)key + key_start),
DIV_ROUND_UP(key_len - key_start, sizeof(u32)), 0);
DIV_ROUND_UP(key_end - key_start, sizeof(u32)), 0);
}
static int flow_key_start(const struct sw_flow_key *key)
@ -1012,31 +1013,31 @@ static int flow_key_start(const struct sw_flow_key *key)
}
static bool __cmp_key(const struct sw_flow_key *key1,
const struct sw_flow_key *key2, int key_start, int key_len)
const struct sw_flow_key *key2, int key_start, int key_end)
{
return !memcmp((u8 *)key1 + key_start,
(u8 *)key2 + key_start, (key_len - key_start));
(u8 *)key2 + key_start, (key_end - key_start));
}
static bool __flow_cmp_key(const struct sw_flow *flow,
const struct sw_flow_key *key, int key_start, int key_len)
const struct sw_flow_key *key, int key_start, int key_end)
{
return __cmp_key(&flow->key, key, key_start, key_len);
return __cmp_key(&flow->key, key, key_start, key_end);
}
static bool __flow_cmp_unmasked_key(const struct sw_flow *flow,
const struct sw_flow_key *key, int key_start, int key_len)
const struct sw_flow_key *key, int key_start, int key_end)
{
return __cmp_key(&flow->unmasked_key, key, key_start, key_len);
return __cmp_key(&flow->unmasked_key, key, key_start, key_end);
}
bool ovs_flow_cmp_unmasked_key(const struct sw_flow *flow,
const struct sw_flow_key *key, int key_len)
const struct sw_flow_key *key, int key_end)
{
int key_start;
key_start = flow_key_start(key);
return __flow_cmp_unmasked_key(flow, key, key_start, key_len);
return __flow_cmp_unmasked_key(flow, key, key_start, key_end);
}
@ -1044,11 +1045,11 @@ struct sw_flow *ovs_flow_lookup_unmasked_key(struct flow_table *table,
struct sw_flow_match *match)
{
struct sw_flow_key *unmasked = match->key;
int key_len = match->range.end;
int key_end = match->range.end;
struct sw_flow *flow;
flow = ovs_flow_lookup(table, unmasked);
if (flow && (!ovs_flow_cmp_unmasked_key(flow, unmasked, key_len)))
if (flow && (!ovs_flow_cmp_unmasked_key(flow, unmasked, key_end)))
flow = NULL;
return flow;
@ -1061,16 +1062,16 @@ static struct sw_flow *ovs_masked_flow_lookup(struct flow_table *table,
struct sw_flow *flow;
struct hlist_head *head;
int key_start = mask->range.start;
int key_len = mask->range.end;
int key_end = mask->range.end;
u32 hash;
struct sw_flow_key masked_key;
ovs_flow_key_mask(&masked_key, flow_key, mask);
hash = ovs_flow_hash(&masked_key, key_start, key_len);
hash = ovs_flow_hash(&masked_key, key_start, key_end);
head = find_bucket(table, hash);
hlist_for_each_entry_rcu(flow, head, hash_node[table->node_ver]) {
if (flow->mask == mask &&
__flow_cmp_key(flow, &masked_key, key_start, key_len))
__flow_cmp_key(flow, &masked_key, key_start, key_end))
return flow;
}
return NULL;

2
net/openvswitch/flow.h
View File

@ -243,7 +243,7 @@ int ovs_ipv4_tun_to_nlattr(struct sk_buff *skb,
const struct ovs_key_ipv4_tunnel *output);
bool ovs_flow_cmp_unmasked_key(const struct sw_flow *flow,
const struct sw_flow_key *key, int key_len);
const struct sw_flow_key *key, int key_end);
struct sw_flow_mask {
int ref_count;