Commit 1cbb3380 authored by Thomas Graf's avatar Thomas Graf Committed by David S. Miller

[NET]: Reduce size of sk_buff by 4 bytes

Reduce local_df to a bit field and ip_summed to a 2 bits
field thus saving 13 bits. Move bit fields, packet type,
and protocol into the spare area between the priority
and the destructor. Saves 4 bytes on both, 32bit and
64bit architectures.
Signed-off-by: default avatarThomas Graf <tgraf@suug.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e176fe89
......@@ -248,17 +248,18 @@ struct sk_buff {
data_len,
mac_len,
csum;
unsigned char local_df,
cloned:1,
nohdr:1,
pkt_type,
ip_summed;
__u32 priority;
unsigned short protocol;
__u8 local_df:1,
cloned:1,
ip_summed:2,
nohdr:1;
/* 3 bits spare */
__u8 pkt_type;
__u16 protocol;
void (*destructor)(struct sk_buff *skb);
#ifdef CONFIG_NETFILTER
unsigned long nfmark;
unsigned long nfmark;
__u32 nfcache;
__u32 nfctinfo;
struct nf_conntrack *nfct;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment