Re: [PATCH net-next] tcp: use an RB tree for ooo receive queue

[Eric Dumazet]

On Wed, 2016-09-07 at 15:26 -0700, Stephen Hemminger wrote:

> How much does this grow the size of tcp socket structure?

This actually shrinks it by 8 bytes, or more on debug kernels where
sizeof(spinlock_t) > 4

Before :

struct sk_buff_head out_of_order_queue;  // At least 24 bytes on 64bit 


After :

2 pointers ( 16 bytes on 64bit )