diff options
| author | Tom Herbert <therbert@google.com> | 2014-07-01 21:32:27 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-07-07 21:14:21 -0700 |
| commit | 0e001614e849b68cff94cda8db8b550569d3dba6 (patch) | |
| tree | 270c7f51c6bbe62c662793729199afdcb4304759 /net/core | |
| parent | b73c3d0e4f0e1961e15bec18720e48aabebe2109 (diff) | |
net: Call skb_get_hash in get_xps_queue and __skb_tx_hash
Call standard function to get a packet hash instead of taking this from
skb->sk->sk_hash or only using skb->protocol.
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/flow_dissector.c | 29 |
1 files changed, 5 insertions, 24 deletions
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c index 2ff8cd4dfc5..62d1cb624f5 100644 --- a/net/core/flow_dissector.c +++ b/net/core/flow_dissector.c @@ -196,12 +196,6 @@ static __always_inline u32 __flow_hash_3words(u32 a, u32 b, u32 c) return jhash_3words(a, b, c, hashrnd); } -static __always_inline u32 __flow_hash_1word(u32 a) -{ - __flow_hash_secret_init(); - return jhash_1word(a, hashrnd); -} - static inline u32 __flow_hash_from_keys(struct flow_keys *keys) { u32 hash; @@ -253,7 +247,7 @@ EXPORT_SYMBOL(__skb_get_hash); * Returns a Tx hash based on the given packet descriptor a Tx queues' number * to be used as a distribution range. */ -u16 __skb_tx_hash(const struct net_device *dev, const struct sk_buff *skb, +u16 __skb_tx_hash(const struct net_device *dev, struct sk_buff *skb, unsigned int num_tx_queues) { u32 hash; @@ -273,13 +267,7 @@ u16 __skb_tx_hash(const struct net_device *dev, const struct sk_buff *skb, qcount = dev->tc_to_txq[tc].count; } - if (skb->sk && skb->sk->sk_hash) - hash = skb->sk->sk_hash; - else - hash = (__force u16) skb->protocol; - hash = __flow_hash_1word(hash); - - return (u16) (((u64) hash * qcount) >> 32) + qoffset; + return (u16) (((u64)skb_get_hash(skb) * qcount) >> 32) + qoffset; } EXPORT_SYMBOL(__skb_tx_hash); @@ -351,17 +339,10 @@ static inline int get_xps_queue(struct net_device *dev, struct sk_buff *skb) if (map) { if (map->len == 1) queue_index = map->queues[0]; - else { - u32 hash; - if (skb->sk && skb->sk->sk_hash) - hash = skb->sk->sk_hash; - else - hash = (__force u16) skb->protocol ^ - skb->hash; - hash = __flow_hash_1word(hash); + else queue_index = map->queues[ - ((u64)hash * map->len) >> 32]; - } + ((u64)skb_get_hash(skb) * map->len) >> 32]; + if (unlikely(queue_index >= dev->real_num_tx_queues)) queue_index = -1; } |