diff options
| author | Eric Dumazet <edumazet@google.com> | 2014-11-03 08:19:53 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-11-03 16:13:03 -0500 |
| commit | 56b174256b6936ec4c1ed8f3407109ac6929d3ca (patch) | |
| tree | 673380fc883abd0b3fc7e1561aba31a41d964886 /include | |
| parent | 8ce0c8254f15229aa99fc6c04141f28c446e5f8c (diff) | |
| download | linux-next-56b174256b6936ec4c1ed8f3407109ac6929d3ca.tar.gz | |
net: add rbnode to struct sk_buff
Yaogong replaces TCP out of order receive queue by an RB tree.
As netem already does a private skb->{next/prev/tstamp} union
with a 'struct rb_node', lets do this in a cleaner way.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Yaogong Wang <wygivan@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/skbuff.h | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 6c8b6f604e76..5ad9675b6fe1 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -20,6 +20,7 @@ #include <linux/time.h> #include <linux/bug.h> #include <linux/cache.h> +#include <linux/rbtree.h> #include <linux/atomic.h> #include <asm/types.h> @@ -440,6 +441,7 @@ static inline u32 skb_mstamp_us_delta(const struct skb_mstamp *t1, * @next: Next buffer in list * @prev: Previous buffer in list * @tstamp: Time we arrived/left + * @rbnode: RB tree node, alternative to next/prev for netem/tcp * @sk: Socket we are owned by * @dev: Device we arrived on/are leaving by * @cb: Control buffer. Free for use by every layer. Put private vars here @@ -504,15 +506,19 @@ static inline u32 skb_mstamp_us_delta(const struct skb_mstamp *t1, */ struct sk_buff { - /* These two members must be first. */ - struct sk_buff *next; - struct sk_buff *prev; - union { - ktime_t tstamp; - struct skb_mstamp skb_mstamp; + struct { + /* These two members must be first. */ + struct sk_buff *next; + struct sk_buff *prev; + + union { + ktime_t tstamp; + struct skb_mstamp skb_mstamp; + }; + }; + struct rb_node rbnode; /* used in netem & tcp stack */ }; - struct sock *sk; struct net_device *dev; |