From 27a884dc3cb63b93c2b3b643f5b31eed5f8a4d26 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Thu, 19 Apr 2007 20:29:13 -0700 Subject: [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 Signed-off-by: David S. Miller --- net/tipc/socket.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/tipc/socket.c') diff --git a/net/tipc/socket.c b/net/tipc/socket.c index b71739f..45832fb 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -1020,7 +1020,7 @@ restart: if (!err) { buf_crs = (unsigned char *)(TIPC_SKB_CB(buf)->handle); - sz = buf->tail - buf_crs; + sz = skb_tail_pointer(buf) - buf_crs; needed = (buf_len - sz_copied); sz_to_copy = (sz <= needed) ? sz : needed; -- cgit v1.1