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authorArnaldo Carvalho de Melo <acme@redhat.com>2007-04-19 23:29:13 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-26 01:26:28 -0400
commit27a884dc3cb63b93c2b3b643f5b31eed5f8a4d26 (patch)
tree5a267e40f9b94014be38dad5de0a52b6628834e0 /net/sched/act_gact.c
parentbe8bd86321fa7f06359d866ef61fb4d2f3e9dce9 (diff)
[SK_BUFF]: Convert skb->tail to sk_buff_data_t
So that it is also an offset from skb->head, reduces its size from 8 to 4 bytes on 64bit architectures, allowing us to combine the 4 bytes hole left by the layer headers conversion, reducing struct sk_buff size to 256 bytes, i.e. 4 64byte cachelines, and since the sk_buff slab cache is SLAB_HWCACHE_ALIGN... :-) Many calculations that previously required that skb->{transport,network, mac}_header be first converted to a pointer now can be done directly, being meaningful as offsets or pointers. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/act_gact.c')
-rw-r--r--net/sched/act_gact.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sched/act_gact.c b/net/sched/act_gact.c
index 87d0faf32867..aad748b3b38c 100644
--- a/net/sched/act_gact.c
+++ b/net/sched/act_gact.c
@@ -155,7 +155,7 @@ static int tcf_gact(struct sk_buff *skb, struct tc_action *a, struct tcf_result
155 155
156static int tcf_gact_dump(struct sk_buff *skb, struct tc_action *a, int bind, int ref) 156static int tcf_gact_dump(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
157{ 157{
158 unsigned char *b = skb->tail; 158 unsigned char *b = skb_tail_pointer(skb);
159 struct tc_gact opt; 159 struct tc_gact opt;
160 struct tcf_gact *gact = a->priv; 160 struct tcf_gact *gact = a->priv;
161 struct tcf_t t; 161 struct tcf_t t;