From: Eric Dumazet <eduma...@google.com>
Date: Thu, 11 Jun 2015 09:15:14 -0700
> We put shinfo->gso_segs in TCP_SKB_CB(skb) a while back for performance
> reasons.
>
> This was in commit cd7d8498c9a5 ("tcp: change tcp_skb_pcount() location")
>
> This patch series complete the job for gso_size and gso_type, so that
> we do not bring 2 extra cache lines in tcp write xmit fast path,
> and making tcp_init_tso_segs() simpler and faster.
Series applied, however long term I worry that using a u16 will not
work with TSO'd ipv6 jumbograms.
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