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flowi: Abstract out functions to get flow hash based on flowi

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Create __get_hash_from_flowi6 and __get_hash_from_flowi4 to get the
flow keys and hash based on flowi structures. These are called by
__skb_get_hash_flowi6 and __skb_get_hash_flowi4. Also, created
get_hash_from_flowi6 and get_hash_from_flowi4 which can be called
when just the hash value for a flowi is needed.

Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tom Herbert
2015-09-01 09:24:25 -07:00
committed by David S. Miller
parent bcc83839ff
commit c6cc1ca7f4
4 changed files with 69 additions and 4 deletions
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16
include/linux/skbuff.h
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@@ -1030,8 +1030,12 @@ __u32 __skb_get_hash_flowi6(struct sk_buff *skb, struct flowi6 *fl6);
static inline __u32 skb_get_hash_flowi6(struct sk_buff *skb, struct flowi6 *fl6)
{
if (!skb->l4_hash && !skb->sw_hash)
__skb_get_hash_flowi6(skb, fl6);
if (!skb->l4_hash && !skb->sw_hash) {
struct flow_keys keys;
__skb_set_sw_hash(skb, __get_hash_from_flowi6(fl6, &keys),
flow_keys_have_l4(&keys));
}
return skb->hash;
}
@@ -1040,8 +1044,12 @@ __u32 __skb_get_hash_flowi4(struct sk_buff *skb, struct flowi4 *fl);
static inline __u32 skb_get_hash_flowi4(struct sk_buff *skb, struct flowi4 *fl4)
{
if (!skb->l4_hash && !skb->sw_hash)
__skb_get_hash_flowi4(skb, fl4);
if (!skb->l4_hash && !skb->sw_hash) {
struct flow_keys keys;
__skb_set_sw_hash(skb, __get_hash_from_flowi4(fl4, &keys),
flow_keys_have_l4(&keys));
}
return skb->hash;
}