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authorArnaldo Carvalho de Melo <acme@redhat.com>2007-04-19 20:29:13 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-25 22:26:28 -0700
commit27a884dc3cb63b93c2b3b643f5b31eed5f8a4d26 (patch)
tree5a267e40f9b94014be38dad5de0a52b6628834e0 /net/irda/irlan
parentbe8bd86321fa7f06359d866ef61fb4d2f3e9dce9 (diff)
downloadlinux-27a884dc3cb63b93c2b3b643f5b31eed5f8a4d26.tar.gz
[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/irda/irlan')
-rw-r--r--net/irda/irlan/irlan_common.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/irda/irlan/irlan_common.c b/net/irda/irlan/irlan_common.c
index fcf9d659962..ed69773b0f8 100644
--- a/net/irda/irlan/irlan_common.c
+++ b/net/irda/irlan/irlan_common.c
@@ -1039,7 +1039,7 @@ static int __irlan_insert_param(struct sk_buff *skb, char *param, int type,
}
/* Insert at end of sk-buffer */
- frame = skb->tail;
+ frame = skb_tail_pointer(skb);
/* Make space for data */
if (skb_tailroom(skb) < (param_len+value_len+3)) {